freedomboneeee/src/freedombone

#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# This install script is intended for use with Debian Jessie
#
# License
# =======
#
# Copyright (C) 2014-2015 Bob Mottram <bob@robotics.uk.to>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.

NO_OF_ARGS=$#

PROJECT_NAME='freedombone'

export TEXTDOMAIN=$PROJECT_NAME
export TEXTDOMAINDIR="/usr/share/locale"

DEFAULT_LANGUAGE=$(echo $LANG)

# username created by default within a debian image
GENERIC_IMAGE_USERNAME='fbone'

# Web site
FREEDOMBONE_WEBSITE="http://freedombone.uk.to"

# Repo
FREEDOMBONE_REPO="https://github.com/bashrc/freedombone"

# Contact details
FREEDOMBONE_BITMESSAGE="BM-2cWuhmBvVdfrHhLoZTdspCkKeiTorUesSL"

# Are we installing on a Beaglebone Black (BBB) or some other system?
INSTALLING_ON_BBB="no"

# Version number of this script
VERSION="1.01"

# if yes then this minimises the number of descisions presented during install
MINIMAL_INSTALL="yes"

# Different system variants which may be specified within
# the SYSTEM_TYPE option
VARIANT_FULL="full"
VARIANT_WRITER="writer"
VARIANT_CLOUD="cloud"
VARIANT_CHAT="chat"
VARIANT_MAILBOX="mailbox"
VARIANT_NONMAILBOX="nonmailbox"
VARIANT_SOCIAL="social"
VARIANT_MEDIA="media"
VARIANT_DEVELOPER="developer"
VARIANT_MESH="mesh"

DEFAULT_DOMAIN_NAME=
DEFAULT_DOMAIN_CODE=
MY_USERNAME=
SYSTEM_TYPE=$VARIANT_FULL

# whether the system is being installed from a pre-created configuration file
INSTALLING_FROM_CONFIGURATION_FILE="no"

# An optional configuration file which overrides some of these variables
CONFIGURATION_FILE="freedombone.cfg"

SSH_PORT=2222
IRC_PORT=6697

# An optional password to log into IRC. This applies to all users
IRC_PASSWORD=

# If this file exists it contains a global password used with
# disk image installs. This simplifies password management for
# deployment at scale
IMAGE_PASSWORD_FILE=/root/login.txt

# parameters used when adding a new domain
DDNS_PROVIDER="default@freedns.afraid.org"
DDNS_USERNAME=
DDNS_PASSWORD=
CURRENT_DDNS_DOMAIN=

NGINX_ENSITE_REPO="https://github.com/perusio/nginx_ensite"
NGINX_ENSITE_COMMIT='fa4d72ce1c0a490442c8474e9c8dc21ed52c93d0'

CLEANUP_MAILDIR_REPO="https://github.com/bashrc/cleanup-maildir"
CLEANUP_MAILDIR_COMMIT='33241d2e3861f901ba17f5c77ada007e1ec06a86'

INADYN_REPO="https://github.com/bashrc/inadyn"
INADYN_COMMIT='fadbe17f520d337dfb8d69ee4bf1fcaa23fce0d6'

# Minimum number of characters in a password
MINIMUM_PASSWORD_LENGTH=10

# number of CPU cores
CPU_CORES=1

# If the system is on an IPv6 network
IPV6_NETWORK='2001:470:26:307'

# The static IP address of the system within the local network
# By default the IP address is dynamic within your LAN
LOCAL_NETWORK_STATIC_IP_ADDRESS=

# IP address of the router (gateway)
ROUTER_IP_ADDRESS="192.168.1.254"

# DNS
NAMESERVER1='213.73.91.35'
NAMESERVER2='85.214.20.141'

# whether to route outgoing traffic through Tor
ROUTE_THROUGH_TOR="no"

# Why use Google as a time source?
# The thinking here is that it's likely to be reliable and fast.
# The ping doesn't reveal any information other than that the server
# is running, and if anyone maliciously alters the time on Google's
# servers then that would certainly be newsworthy and they'd be
# likely to do something about it quickly.
# If you have better time sources then change them here.
TLS_TIME_SOURCE1="google.com"
TLS_TIME_SOURCE2="www.ptb.de"

# The type of hardware random number generator being used
# This can be empty, "beaglebone" or "onerng"
HWRNG_TYPE=

# Download location for OneRNG driver
ONERNG_PACKAGE="onerng_3.4-1_all.deb"
ONERNG_PACKAGE_DOWNLOAD="https://github.com/OneRNG/onerng.github.io/blob/master/sw/$ONERNG_PACKAGE?raw=true"
# Hash for OneRNG driver
ONERNG_PACKAGE_HASH='78f1c2f52ae573e3b398a695ece7ab9f41868252657ea269f0d5cf0bd4f2eb59'

# device name for OneRNG
ONERNG_DEVICE='ttyACM0'

# Whether this system is being installed within a docker container
INSTALLED_WITHIN_DOCKER="no"

# If you want to run a public mailing list specify its name here.
# There should be no spaces in the name
PUBLIC_MAILING_LIST=
# Optional different domain name for the public mailing list
PUBLIC_MAILING_LIST_DOMAIN_NAME=
# Directory where the public mailing list data is stored
PUBLIC_MAILING_LIST_DIRECTORY="/var/spool/mlmmj"

# If you want to run an encrypted mailing list specify its name here.
# There should be no spaces in the name
PRIVATE_MAILING_LIST=

# Domain name for mediagoblin installation
MEDIAGOBLIN_DOMAIN_NAME=
MEDIAGOBLIN_CODE=
MEDIAGOBLIN_REPO="https://gitorious.org/mediagoblin/mediagoblin.git"
MEDIAGOBLIN_ADMIN_PASSWORD=

# Domain name for microblog installation
MICROBLOG_DOMAIN_NAME=
MICROBLOG_CODE=
MICROBLOG_REPO="git://gitorious.org/social/mainline.git"
MICROBLOG_ADMIN_PASSWORD=
GNUSOCIAL_COMMIT='5b847eff120264c3e9571e8a939e6b3a30e68032'

# Domain name for hubzilla installation
HUBZILLA_DOMAIN_NAME=
HUBZILLA_CODE=
HUBZILLA_REPO="https://github.com/redmatrix/hubzilla.git"
HUBZILLA_ADDONS_REPO="https://github.com/redmatrix/hubzilla-addons.git"
HUBZILLA_ADMIN_PASSWORD=
HUBZILLA_COMMIT='6613275cc2f4103a17cc2bfe513dc20573df5aab'

# Domain name for git hosting installation
GIT_DOMAIN_NAME=
GIT_CODE=
GIT_DOMAIN_REPO="https://github.com/gogits/gogs.git"
GIT_ADMIN_PASSWORD=
GOGS_COMMIT='2f28a0310b0f391dd74bb3a2ab0ae06379a4fb1a'

# Domain name for Owncloud installation
OWNCLOUD_DOMAIN_NAME=
OWNCLOUD_CODE=
OWNCLOUD_ADMIN_PASSWORD=
OWNCLOUD_MUSIC_APP_REPO="https://github.com/owncloud/music"
OWNCLOUD_MUSIC_APP_COMMIT='7f79afb4ae9a6ecd8f530d87106f960306c0a15a'

# Domain name for your wiki
WIKI_DOMAIN_NAME=
WIKI_ADMIN_PASSWORD=
WIKI_TITLE="Freedombone Wiki"
WIKI_CODE=

# Domain name for your blog
FULLBLOG_DOMAIN_NAME=
FULLBLOG_CODE=
FULLBLOG_REPO="https://github.com/danpros/htmly"
FULLBLOG_COMMIT='5f271a2370cc1bfde15f2a0d5ed6928cc74b0efa'
MY_BLOG_TITLE="My Blog"
MY_BLOG_SUBTITLE="Another Freedombone Blog"

GPG_KEYSERVER="hkp://keys.gnupg.net"

# whether to encrypt all incoming email with your public key
GPG_ENCRYPT_STORED_EMAIL="yes"

# gets set to yes if gpg keys are imported from usb
GPG_KEYS_IMPORTED="no"

# optionally you can provide your exported GPG key pair here
# Note that the private key file will be deleted after use
# If these are unspecified then a new GPG key will be created
MY_GPG_PUBLIC_KEY=
MY_GPG_PRIVATE_KEY=

# optionally specify your public key ID
MY_GPG_PUBLIC_KEY_ID=

# If you have existing mail within a Maildir
# you can specify the directory here and the files
# will be imported
IMPORT_MAILDIR=

# The Debian package repository to use.
DEBIAN_REPO="ftp.us.debian.org"

DEBIAN_VERSION="jessie"

# Directory where source code is downloaded and compiled
INSTALL_DIR=$HOME/build

# device name for an attached usb drive
USB_DRIVE=/dev/sda1

# Location where the USB drive is mounted to
USB_MOUNT=/mnt/usb

# name of a script used to upgrade the system
UPGRADE_SCRIPT_NAME="${PROJECT_NAME}-upgrade"

# name of a script which keeps running processes going even if they crash
WATCHDOG_SCRIPT_NAME="keepon"

# Number of days to keep backups for
BACKUP_MAX_DAYS=30

# memory limit for php in MB
MAX_PHP_MEMORY=64

# default MariaDB password
MARIADB_PASSWORD=

# Directory where XMPP settings are stored
XMPP_DIRECTORY="/var/lib/prosody"

# file containing a list of remote locations to backup to
# Format: [username@friendsdomain//home/username] [ssh_password]
# With the only space character being between the server and the password
FRIENDS_SERVERS_LIST=/home/$MY_USERNAME/backup.list

# list of encryption protocols
SSL_PROTOCOLS="TLSv1 TLSv1.1 TLSv1.2"

# list of ciphers to use.  See bettercrypto.org recommendations
SSL_CIPHERS="EDH+CAMELLIA:EDH+aRSA:EECDH+aRSA+AESGCM:EECDH+aRSA+SHA384:EECDH+aRSA+SHA256:EECDH:+CAMELLIA256:+AES256:+CAMELLIA128:+AES128:+SSLv3:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!DSS:!RC4:!SEED:!ECDSA:CAMELLIA256-SHA:AES256-SHA:CAMELLIA128-SHA:AES128-SHA"

# ssh (from https://stribika.github.io/2015/01/04/secure-secure-shell.html)
SSH_CIPHERS="chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr"
SSH_MACS="hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-ripemd160-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-512,hmac-sha2-256,hmac-ripemd160,umac-128@openssh.com"
SSH_KEX="curve25519-sha256@libssh.org,diffie-hellman-group-exchange-sha256"
SSH_HOST_KEY_ALGORITHMS="ssh-ed25519-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ssh-rsa-cert-v00@openssh.com,ssh-ed25519,ssh-rsa"

# xmpp ciphers and curve
XMPP_CIPHERS='"EDH+CAMELLIA:EDH+aRSA:EECDH+aRSA+AESGCM:EECDH+aRSA+SHA256:EECDH:+CAMELLIA128:+AES128:+SSLv3:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!DSS:!RC4:!SEED:!IDEA:!ECDSA:kEDH:CAMELLIA128-SHA:AES128-SHA"'
XMPP_ECC_CURVE='"secp384r1"'

# the default email address
MY_EMAIL_ADDRESS=$MY_USERNAME@$DEFAULT_DOMAIN_NAME

# optionally specify your name to appear on the blog
MY_NAME=$DEFAULT_DOMAIN_NAME

export DEBIAN_FRONTEND=noninteractive

# logging level for Nginx
WEBSERVER_LOG_LEVEL='warn'

# used to limit CPU usage
CPULIMIT='/usr/bin/cpulimit -l 20 -e'

# command to create a git repository
CREATE_GIT_PROJECT_COMMAND='create-project'

# File which keeps track of what has already been installed
COMPLETION_FILE=$HOME/${PROJECT_NAME}-completed.txt

# Used to indicate whether the backup contains MariaDB databases or not
BACKUP_INCLUDES_DATABASES="no"

# contains the mysql root password which
# is used for backups and repair
DATABASE_PASSWORD_FILE=/root/dbpass

# log file where details of remote backups are stored
REMOTE_BACKUPS_LOG=/var/log/remotebackups.log

# message if something fails to install
CHECK_MESSAGE="Check your internet connection, /etc/network/interfaces and /etc/resolv.conf, then delete $COMPLETION_FILE, run 'rm -fR /var/lib/apt/lists/* && apt-get update --fix-missing' and run this script again. If hash sum mismatches persist then try setting $DEBIAN_REPO to a different mirror and also change /etc/apt/sources.list."

# web site used to obtain the external IP address of the system
GET_IP_ADDRESS_URL="checkip.two-dns.de"

# Password used for VoIP server
VOIP_SERVER_PASSWORD=
# Port on which VoIP server listens
VOIP_PORT=64738
SIP_SERVER_PASSWORD=
SIP_PORT=5060

# Location of VoIP database and configuration
VOIP_DATABASE="mumble-server.sqlite"
VOIP_CONFIG_FILE="mumble-server.ini"

# other possible services to obtain the external IP address
EXTERNAL_IP_SERVICES=( \
  'https://check.torproject.org/' \
  'https://www.whatsmydns.net/whats-my-ip-address.html' \
  'https://www.privateinternetaccess.com/pages/whats-my-ip/' \
  'http://checkip.two-dns.de' \
  'http://ip.dnsexit.com' \
  'http://ifconfig.me/ip' \
  'http://ipecho.net/plain' \
  'http://checkip.dyndns.org/plain' \
  'http://ipogre.com/linux.php' \
  'http://whatismyipaddress.com/' \
  'http://ip.my-proxy.com/' \
  'http://websiteipaddress.com/WhatIsMyIp' \
  'http://getmyipaddress.org/' \
  'http://www.my-ip-address.net/' \
  'http://myexternalip.com/raw' \
  'http://www.canyouseeme.org/' \
  'http://www.trackip.net/' \
  'http://icanhazip.com/' \
  'http://www.iplocation.net/' \
  'http://www.howtofindmyipaddress.com/' \
  'http://www.ipchicken.com/' \
  'http://whatsmyip.net/' \
  'http://www.ip-adress.com/' \
  'http://checkmyip.com/' \
  'http://www.tracemyip.org/' \
  'http://checkmyip.net/' \
  'http://www.lawrencegoetz.com/programs/ipinfo/' \
  'http://www.findmyip.co/' \
  'http://ip-lookup.net/' \
  'http://www.dslreports.com/whois' \
  'http://www.mon-ip.com/en/my-ip/' \
  'http://www.myip.ru' \
  'http://ipgoat.com/' \
  'http://www.myipnumber.com/my-ip-address.asp' \
  'http://www.whatsmyipaddress.net/' \
  'http://formyip.com/' \
  'http://www.displaymyip.com/' \
  'http://www.bobborst.com/tools/whatsmyip/' \
  'http://www.geoiptool.com/' \
  'http://checkip.dyndns.com/' \
  'http://myexternalip.com/' \
  'http://www.ip-adress.eu/' \
  'http://www.infosniper.net/' \
  'http://wtfismyip.com/' \
  'http://ipinfo.io/' \
  'http://httpbin.org/ip')

WIFI_CHANNEL=2
WIFI_INTERFACE=wlan0

# cjdns settings
ENABLE_CJDNS="no"
CJDNS_PRIVATE_KEY=
CJDNS_PUBLIC_KEY=
CJDNS_IPV6=
CJDNS_PASSWORD=
CJDNS_PORT=
CJDNS_REPO="https://github.com/cjdelisle/cjdns.git"
CJDNS_COMMIT='13189fde111d0500427a7a0ce06a970753527bca'

# B.A.T.M.A.N settings
ENABLE_BATMAN="no"
BATMAN_CELLID='any'
ESSID='mesh'

# Babel mesh
ENABLE_BABEL="no"
BABEL_PORT=6696

# social key management
ENABLE_SOCIAL_KEY_MANAGEMENT="no"

TOX_PORT=33445
TOX_REPO='git://github.com/irungentoo/toxcore.git'
TOX_COMMIT='73b2144edcfd1ca617e9054479b66ab0c0361a14'
TOX_BOOTSTRAP_ID_FILE=/var/lib/tox-bootstrapd/pubkey.txt
# These are some default nodes, but you can replace them with trusted nodes
# as you prefer. See https://wiki.tox.im/Nodes
TOX_NODE=
#TOX_NODES=(
#  '192.254.75.102,2607:5600:284::2,33445,951C88B7E75C867418ACDB5D273821372BB5BD652740BCDF623A4FA293E75D2F,Tox RELENG,US'
#  '144.76.60.215,2a01:4f8:191:64d6::1,33445,04119E835DF3E78BACF0F84235B300546AF8B936F035185E2A8E9E0A67C8924F,sonOfRa,DE'
#)
TOXIC_REPO="https://github.com/Tox/toxic"
TOXIC_COMMIT='88270827a96b2082e254677f35585ed24581a42c'

#ZERONET_REPO='https://github.com/HelloZeroNet/ZeroNet.git'
ZERONET_REPO='https://github.com/HelloZeroNet/ZeroNet.git'
ZERONET_COMMIT='675bd462556c541d65e2d95f91f899146a373aad'
ZERONET_BLOG_REPO='https://github.com/HelloZeroNet/ZeroBlog'
ZERONET_BLOG_COMMIT='bbb0d6c36465fed2e6df71f1aab45fcc9c6ad609'
ZERONET_MAIL_REPO='https://github.com/HelloZeroNet/ZeroMail'
ZERONET_MAIL_COMMIT='955af09d643c72b02e4983d71eca5c0c93a6c131'
ZERONET_FORUM_REPO='https://github.com/HelloZeroNet/ZeroTalk'
ZERONET_FORUM_COMMIT='e2d2c9cb1cfbfef91b244935efb5c14c2ad95faa'
ZERONET_URL=http://127.0.0.1:43110
ZERONET_PORT=15441
TRACKER_PORT=6969
ZERONET_DEFAULT_BLOG_TAGLINE="Blogging on the Mesh"
ZERONET_DEFAULT_FORUM_TAGLINE="A decentralized discussion group"
ZERONET_DEFAULT_MAIL_TAGLINE="Mail for the Mesh"

# https://github.com/ipfs/go-ipfs
IPFS_GO_REPO="github.com/ipfs/go-ipfs/cmd/ipfs"
IPFS_COMMIT='20b06a4cbce8884f5b194da6e98cb11f2c77f166'
IPFS_PORT=4001

GPGIT_REPO="https://github.com/mikecardwell/gpgit"
GPGIT_COMMIT='583dc76119f19420f8a33f606744faa7c8922738'

# Default diffie-hellman key length in bits
DH_KEYLENGTH=2048

# repo for atheros AR9271 wifi driver
ATHEROS_WIFI_REPO='https://github.com/qca/open-ath9k-htc-firmware.git'

LETSENCRYPT_ENABLED="no"
LETSENCRYPT_SERVER='https://acme-v01.api.letsencrypt.org/directory'

function show_help {
  echo ''
  echo $'freedombone -c [configuration file]'
  echo ''
  echo $'  -h --help             Show help'
  echo $'     menuconfig         Easy interactive installation'
  echo $'     menuconfigfull     Full interactive installation'
  echo $'  -c --config           Installing from a configuration file'
  echo $'     --bbb              Installing on Beaglebone Black'
  echo $'  -u --user             User to install the system as'
  echo $'  -d --domain           Default domain name'
  echo $'  -s --system           System type'
  echo $'     --ip               Static LAN IP address of the system'
  echo $'     --iprouter         LAN IP address of the internet router'
  echo $'     --ddns             Dynamic DNS provider domain'
  echo $'     --ddnsuser         Dynamic DNS provider username'
  echo $'     --ddnspass         Dynamic DNS provider password'
  echo ''
  echo $'     --microblogdomain  Microblog domain name'
  echo $'     --wikidomain       Wiki domain name'
  echo $'     --blogdomain       Blog domain name'
  echo $'     --ownclouddomain   Owncloud domain name'
  echo $'     --hubzilladomain   Hubzilla domain name'
  echo $'     --gitdomain        Git hosting domain name'
  echo $'  -t --time             Domain used as a TLS time source'
  echo $'     --ssh              ssh port number'
  echo $'     --list             Public mailing list name'
  echo $'     --cores            Number of CPU cores'
  echo $'     --name             Your name'
  echo $'     --email            Your email address'
  echo $'     --usb              Path for the USB drive (eg. /dev/sdb1)'
  echo $'     --cjdns            Enable CJDNS'
  echo $'     --vpass            VoIP server password'
  echo $'     --vport            VoIP server port'
  echo $'     --ns1              First DNS nameserver'
  echo $'     --ns2              Second DNS nameserver'
  echo $'     --repo             Debian repository'
  echo ''
  echo $'system types'
  echo '------------'
  echo $'This can either be blank if you wish to install the full system,'
  echo $"or for more specialised variants you can specify '$VARIANT_MAILBOX', '$VARIANT_CLOUD',"
  echo $"'$VARIANT_CHAT', '$VARIANT_SOCIAL', '$VARIANT_MEDIA', '$VARIANT_WRITER', '$VARIANT_DEVELOPER'"
  echo $"or '$VARIANT_MESH'."
  echo ''
  echo $"If you wish to install everything except email then use the '$VARIANT_NONMAILBOX' variaint."
  echo ''
  exit 0
}

function locale_setup {
  if grep -Fxq "locale_setup" $COMPLETION_FILE; then
      return
  fi

  apt-get -y install locales locales-all debconf

  if [ ! "$DEFAULT_LANGUAGE" ]; then
      DEFAULT_LANGUAGE='en_GB.UTF-8'
  fi
  if [ ${#DEFAULT_LANGUAGE} -lt 2 ]; then
      DEFAULT_LANGUAGE='en_GB.UTF-8'
  fi

  update-locale LANG=${DEFAULT_LANGUAGE}
  update-locale LANGUAGE=${DEFAULT_LANGUAGE}
  update-locale LC_MESSAGES=${DEFAULT_LANGUAGE}
  update-locale LC_ALL=${DEFAULT_LANGUAGE}
  update-locale LC_CTYPE=${DEFAULT_LANGUAGE}

  echo 'locale_setup' >> $COMPLETION_FILE
}

function interactive_configuration_remote_backups {
  if [[ $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  if [ ! -f /usr/local/bin/${PROJECT_NAME}-remote ]; then
      if [ ! -f /usr/bin/${PROJECT_NAME}-remote ]; then
          echo $"The command ${PROJECT_NAME}-remote was not found"
          exit 87354
      fi
  fi
  ${PROJECT_NAME}-remote -u $MY_USERNAME -l $FRIENDS_SERVERS_LIST -m $MINIMUM_PASSWORD_LENGTH -r yes
  if [ ! "$?" = "0" ]; then
      echo $'Command failed:'
      echo ''
      echo $"  ${PROJECT_NAME}-remote -u $MY_USERNAME -l $FRIENDS_SERVERS_LIST -m $MINIMUM_PASSWORD_LENGTH -r yes"
      echo ''
      exit 65892
  fi
}

# test a domain name to see if it's valid
function validate_domain_name {
  # count the number of dots in the domain name
  dots=${TEST_DOMAIN_NAME//[^.]}
  no_of_dots=${#dots}
  if (( $no_of_dots > 3 )); then
      TEST_DOMAIN_NAME=$"The domain $TEST_DOMAIN_NAME has too many subdomains. It should be of the type w.x.y.z, x.y.z or y.z"
  fi
  if (( $no_of_dots == 0 )); then
      TEST_DOMAIN_NAME=$"The domain $TEST_DOMAIN_NAME has no top level domain. It should be of the type w.x.y.z, x.y.z or y.z"
  fi
}

function interactive_configuration {
  if [ ! -f /usr/local/bin/${PROJECT_NAME}-config ]; then
      if [ ! -f /usr/bin/${PROJECT_NAME}-config ]; then
          echo $"The command ${PROJECT_NAME}-config was not found"
          exit 63935
      fi
  fi
  if [ -f /tmp/meshuserdevice ]; then
      rm -f /tmp/meshuserdevice
  fi

  if [[ $MINIMAL_INSTALL == "no" ]]; then
      ${PROJECT_NAME}-config \
          -f $CONFIGURATION_FILE \
          -w $FREEDOMBONE_WEBSITE \
          -b $FREEDOMBONE_BITMESSAGE \
          -m $MINIMUM_PASSWORD_LENGTH
  else
      ${PROJECT_NAME}-config \
          -f $CONFIGURATION_FILE \
          -w $FREEDOMBONE_WEBSITE \
          -b $FREEDOMBONE_BITMESSAGE \
          -m $MINIMUM_PASSWORD_LENGTH \
          --minimal "yes"
  fi
  if [ -f /tmp/meshuserdevice ]; then
      # mesh network user device installation
      rm -f /tmp/meshuserdevice
      exit 0
  fi
  if [ ! "$?" = "0" ]; then
      echo $'Command failed:'
      echo ''
      echo $"  ${PROJECT_NAME}-config -u $MY_USERNAME -f $CONFIGURATION_FILE -w $FREEDOMBONE_WEBSITE -b $FREEDOMBONE_BITMESSAGE -m $MINIMUM_PASSWORD_LENGTH --minimal [yes|no]"
      echo ''
      exit 73594
  fi

  if [[ $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      FRIENDS_SERVERS_LIST=/home/$MY_USERNAME/backup.list

      dialog --title "Encrypted backup to other servers" \
             --backtitle "Freedombone Configuration" \
             --defaultno \
             --yesno "\nDo you wish to configure some remote backup locations?" 7 60
      sel=$?
      case $sel in
          0) interactive_configuration_remote_backups;;
      esac
  fi
}

command_options=$1

if [[ $command_options == "menuconfigfull" ]]; then
  MINIMAL_INSTALL="no"
  command_options="menuconfig"
fi

if [[ $command_options == "menuconfig" ]]; then
  interactive_configuration
else
  while [[ $# > 1 ]]
  do
  key="$1"

  case $key in
    -h|--help)
    show_help
    ;;
    # load a configuration file
    -c|--config)
    shift
    CONFIGURATION_FILE="$1"
    INSTALLING_FROM_CONFIGURATION_FILE="yes"
    break
    ;;
    # username within /home
    -u|--user)
    shift
    MY_USERNAME="$1"
    ;;
    # microblog domain name
    --microblogdomain)
    shift
    MICROBLOG_DOMAIN_NAME="$1"
    ;;
    # wiki domain name
    --wikidomain)
    shift
    WIKI_DOMAIN_NAME="$1"
    ;;
    # blog domain name
    --blogdomain)
    shift
    FULLBLOG_DOMAIN_NAME="$1"
    ;;
    # owncloud domain name
    --ownclouddomain)
    shift
    OWNCLOUD_DOMAIN_NAME="$1"
    ;;
    # hubzilla domain name
    --hubzilladomain)
    shift
    HUBZILLA_DOMAIN_NAME="$1"
    ;;
    # git hosting domain name
    --gitdomain)
    shift
    GIT_DOMAIN_NAME="$1"
    ;;
    # default domain name
    -d|--domain)
    shift
    DEFAULT_DOMAIN_NAME="$1"
    ;;
    # The type of system
    -s|--system)
    shift
    SYSTEM_TYPE="$1"
    ;;
    # The dynamic DNS provider
    --ddns)
    shift
    DDNS_PROVIDER="$1"
    ;;
    # Username for the synamic DNS provider
    --ddnsuser)
    shift
    DDNS_USERNAME="$1"
    ;;
    # Password for the synamic DNS provider
    --ddnspass)
    shift
    DDNS_PASSWORD="$1"
    ;;
    # Whether this installation is on a Beaglebone Black
    --bbb)
    INSTALLING_ON_BBB="yes"
    ;;
    # Domain name to use as a TLS time source
    -t|--time)
    shift
    TLS_TIME_SOURCE1="$1"
    ;;
    # Static IP address for the system
    --ip)
    shift
    LOCAL_NETWORK_STATIC_IP_ADDRESS=$1
    ;;
    # IP address for the internet router
    --iprouter)
    shift
    ROUTER_IP_ADDRESS=$1
    ;;
    # ssh port
    --ssh)
    shift
    SSH_PORT=$1
    ;;
    # public mailing list name
    --list)
    shift
    PUBLIC_MAILING_LIST="$1"
    ;;
    # Number of CPU cores
    --cores)
    shift
    CPU_CORES=$1
    ;;
    # my name
    --name)
    shift
    MY_NAME="$1"
    ;;
    # my email address
    --email)
    shift
    MY_EMAIL_ADDRESS="$1"
    ;;
    # USB drive
    --usb)
    shift
    USB_DRIVE=$1
    ;;
    # Enable CJDNS
    --cjdns)
    shift
    ENABLE_CJDNS="yes"
    ;;
    # Enable B.A.T.M.A.N
    --batman)
    shift
    ENABLE_BATMAN="yes"
    ;;
    # Enable Babel
    --babel)
    shift
    ENABLE_BABEL="yes"
    ;;
    # VoIP server password
    --vpass)
    shift
    VOIP_SERVER_PASSWORD=$1
    ;;
    # VoIP server port
    --vport)
    shift
    VOIP_PORT=$1
    ;;
    # DNS Nameserver 1
    --ns1)
    shift
    NAMESERVER1=$1
    ;;
    # DNS Nameserver 2
    --ns2)
    shift
    NAMESERVER2=$1
    ;;
    # Debian repository
    --repo)
    shift
    DEBIAN_REPO=$1
    ;;
    # minimal install
    --minimal)
    shift
    MINIMAL_INSTALL=$1
    ;;
    *)
    # unknown option
    ;;
  esac
  shift
  done
fi

function parse_args {
  if [[ $NO_OF_ARGS == 0 ]]; then
      echo 'no_of_args = 0'
      show_help
      exit 0
  fi

  if [ ! -d /home/$MY_USERNAME ]; then
      echo $"There is no user '$MY_USERNAME' on the system. Use 'adduser $MY_USERNAME' to create the user."
      exit 1
  fi
  if [ ! "$DEFAULT_DOMAIN_NAME" ]; then
      if [[ $SYSTEM_TYPE != "$VARIANT_MESH" ]]; then
          echo 'No default domain specified'
          show_help
          exit 2
      fi
  fi
  if [ ! $MY_USERNAME ]; then
      echo 'No username specified'
      show_help
      exit 3
  fi
  if [[ $SYSTEM_TYPE != "$VARIANT_MESH" ]]; then
      if [ ! $DDNS_USERNAME ]; then
          echo $'Please provide the username for your dynamic DNS provider with the --ddnsuser option'
          exit 7823
      fi
      if [ ! $DDNS_PASSWORD ]; then
          echo $'Please provide the password for your dynamic DNS provider with the --ddnspass option'
          exit 6382
      fi
  fi
  if [ ! $SYSTEM_TYPE ]; then
      SYSTEM_TYPE=$VARIANT_FULL
  fi
  if [[ $SYSTEM_TYPE != $VARIANT_WRITER && $SYSTEM_TYPE != $VARIANT_CLOUD && $SYSTEM_TYPE != $VARIANT_CHAT && $SYSTEM_TYPE != $VARIANT_MAILBOX && $SYSTEM_TYPE != $VARIANT_NONMAILBOX && $SYSTEM_TYPE != $VARIANT_SOCIAL && $SYSTEM_TYPE != $VARIANT_MEDIA && $SYSTEM_TYPE != $VARIANT_DEVELOPER && $SYSTEM_TYPE != $VARIANT_MESH && $SYSTEM_TYPE != $VARIANT_FULL ]]; then
      echo $"'$SYSTEM_TYPE' is an unrecognised Freedombone variant."
      exit 30
  fi
}

function read_configuration {
  # if not installing on a Beaglebone then use sdb as the USB drive by default
  if [ ! $INSTALLING_ON_BBB ]; then
      if [[ $USB_DRIVE == /dev/sda1 ]]; then
          USB_DRIVE=/dev/sdb1
      fi
  fi

  if [[ $INSTALLING_FROM_CONFIGURATION_FILE == "yes"  ]]; then
      if [ ! -f $CONFIGURATION_FILE ]; then
          echo $"The configuration file $CONFIGURATION_FILE was not found"
          exit 8935
      fi
  fi

  if [ -f $CONFIGURATION_FILE ]; then
      # Ensure that a copy of the config exists for upgrade purposes
      if [[ $CONFIGURATION_FILE != '/root/freedombone.cfg' ]]; then
          cp $CONFIGURATION_FILE /root/freedombone.cfg
      fi
      if grep -q "IRC_PASSWORD" $CONFIGURATION_FILE; then
          IRC_PASSWORD=$(grep "IRC_PASSWORD" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "DEFAULT_LANGUAGE" $CONFIGURATION_FILE; then
          DEFAULT_LANGUAGE=$(grep "DEFAULT_LANGUAGE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MINIMAL_INSTALL" $CONFIGURATION_FILE; then
          MINIMAL_INSTALL=$(grep "MINIMAL_INSTALL" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "LETSENCRYPT_SERVER" $CONFIGURATION_FILE; then
          LETSENCRYPT_SERVER=$(grep "LETSENCRYPT_SERVER" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "FULLBLOG_REPO" $CONFIGURATION_FILE; then
          FULLBLOG_REPO=$(grep "FULLBLOG_REPO" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "FULLBLOG_COMMIT" $CONFIGURATION_FILE; then
          FULLBLOG_COMMIT=$(grep "FULLBLOG_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "GOGS_COMMIT" $CONFIGURATION_FILE; then
          GOGS_COMMIT=$(grep "GOGS_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "TOX_COMMIT" $CONFIGURATION_FILE; then
          TOX_COMMIT=$(grep "TOX_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "TOXIC_COMMIT" $CONFIGURATION_FILE; then
          TOXIC_COMMIT=$(grep "TOXIC_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "GPGIT_REPO" $CONFIGURATION_FILE; then
          GPGIT_REPO=$(grep "GPGIT_REPO" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "GPGIT_COMMIT" $CONFIGURATION_FILE; then
          GPGIT_COMMIT=$(grep "GPGIT_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "OWNCLOUD_MUSIC_APP_COMMIT" $CONFIGURATION_FILE; then
          OWNCLOUD_MUSIC_APP_COMMIT=$(grep "OWNCLOUD_MUSIC_APP_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "HUBZILLA_COMMIT" $CONFIGURATION_FILE; then
          HUBZILLA_COMMIT=$(grep "HUBZILLA_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "IPFS_COMMIT" $CONFIGURATION_FILE; then
          IPFS_COMMIT=$(grep "IPFS_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "ZERONET_BLOG_COMMIT" $CONFIGURATION_FILE; then
          ZERONET_BLOG_COMMIT=$(grep "ZERONET_BLOG_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "ZERONET_MAIL_COMMIT" $CONFIGURATION_FILE; then
          ZERONET_MAIL_COMMIT=$(grep "ZERONET_MAIL_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "ZERONET_FORUM_COMMIT" $CONFIGURATION_FILE; then
          ZERONET_FORUM_COMMIT=$(grep "ZERONET_FORUM_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "GNUSOCIAL_COMMIT" $CONFIGURATION_FILE; then
          GNUSOCIAL_COMMIT=$(grep "GNUSOCIAL_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "NGINX_ENSITE_REPO" $CONFIGURATION_FILE; then
          NGINX_ENSITE_REPO=$(grep "NGINX_ENSITE_REPO" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "NGINX_ENSITE_COMMIT" $CONFIGURATION_FILE; then
          NGINX_ENSITE_COMMIT=$(grep "NGINX_ENSITE_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "CLEANUP_MAILDIR_COMMIT" $CONFIGURATION_FILE; then
          CLEANUP_MAILDIR_COMMIT=$(grep "CLEANUP_MAILDIR_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "CLEANUP_MAILDIR_REPO" $CONFIGURATION_FILE; then
          CLEANUP_MAILDIR_REPO=$(grep "CLEANUP_MAILDIR_REPO" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "ZERONET_COMMIT" $CONFIGURATION_FILE; then
          ZERONET_COMMIT=$(grep "ZERONET_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "INADYN_REPO" $CONFIGURATION_FILE; then
          INADYN_REPO=$(grep "INADYN_REPO" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "INADYN_COMMIT" $CONFIGURATION_FILE; then
          INADYN_COMMIT=$(grep "INADYN_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "GPG_KEYSERVER" $CONFIGURATION_FILE; then
          GPG_KEYSERVER=$(grep "GPG_KEYSERVER" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "IPFS_PORT" $CONFIGURATION_FILE; then
          IPFS_PORT=$(grep "IPFS_PORT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "TRACKER_PORT" $CONFIGURATION_FILE; then
          TRACKER_PORT=$(grep "TRACKER_PORT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "ZERONET_PORT" $CONFIGURATION_FILE; then
          ZERONET_PORT=$(grep "ZERONET_PORT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "DH_KEYLENGTH" $CONFIGURATION_FILE; then
          DH_KEYLENGTH=$(grep "DH_KEYLENGTH" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "WIFI_INTERFACE" $CONFIGURATION_FILE; then
          WIFI_INTERFACE=$(grep "WIFI_INTERFACE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "IRC_PORT" $CONFIGURATION_FILE; then
          IRC_PORT=$(grep "IRC_PORT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "WIFI_CHANNEL" $CONFIGURATION_FILE; then
          WIFI_CHANNEL=$(grep "WIFI_CHANNEL" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "BATMAN_CELLID" $CONFIGURATION_FILE; then
          BATMAN_CELLID=$(grep "BATMAN_CELLID" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "ESSID" $CONFIGURATION_FILE; then
          ESSID=$(grep "ESSID" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "TOX_PORT" $CONFIGURATION_FILE; then
          TOX_PORT=$(grep "TOX_PORT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "TOX_NODES" $CONFIGURATION_FILE; then
          TOX_NODES=$(grep "TOX_NODES" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "TOX_REPO" $CONFIGURATION_FILE; then
          TOX_REPO=$(grep "TOX_REPO" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "ENABLE_SOCIAL_KEY_MANAGEMENT" $CONFIGURATION_FILE; then
          ENABLE_SOCIAL_KEY_MANAGEMENT=$(grep "ENABLE_SOCIAL_KEY_MANAGEMENT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "IPV6_NETWORK" $CONFIGURATION_FILE; then
          IPV6_NETWORK=$(grep "IPV6_NETWORK" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "HWRNG_TYPE" $CONFIGURATION_FILE; then
          HWRNG_TYPE=$(grep "HWRNG_TYPE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MEDIAGOBLIN_DOMAIN_NAME" $CONFIGURATION_FILE; then
          MEDIAGOBLIN_DOMAIN_NAME=$(grep "MEDIAGOBLIN_DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MEDIAGOBLIN_CODE" $CONFIGURATION_FILE; then
          MEDIAGOBLIN_CODE=$(grep "MEDIAGOBLIN_CODE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "GIT_ADMIN_PASSWORD" $CONFIGURATION_FILE; then
          GIT_ADMIN_PASSWORD=$(grep "GIT_ADMIN_PASSWORD" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "GIT_DOMAIN_NAME" $CONFIGURATION_FILE; then
          GIT_DOMAIN_NAME=$(grep "GIT_DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "GIT_CODE" $CONFIGURATION_FILE; then
          GIT_CODE=$(grep "GIT_CODE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "SYSTEM_TYPE" $CONFIGURATION_FILE; then
          SYSTEM_TYPE=$(grep "SYSTEM_TYPE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "SSL_PROTOCOLS" $CONFIGURATION_FILE; then
          SSL_PROTOCOLS=$(grep "SSL_PROTOCOLS" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "SSL_CIPHERS" $CONFIGURATION_FILE; then
          SSL_CIPHERS=$(grep "SSL_CIPHERS" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "SSH_CIPHERS" $CONFIGURATION_FILE; then
          SSH_CIPHERS=$(grep "SSH_CIPHERS" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "SSH_MACS" $CONFIGURATION_FILE; then
          SSH_MACS=$(grep "SSH_MACS" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "SSH_KEX" $CONFIGURATION_FILE; then
          SSH_KEX=$(grep "SSH_KEX" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "SSH_HOST_KEY_ALGORITHMS" $CONFIGURATION_FILE; then
          SSH_HOST_KEY_ALGORITHMS=$(grep "SSH_HOST_KEY_ALGORITHMS" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "SSH_PASSWORDS" $CONFIGURATION_FILE; then
          SSH_PASSWORDS=$(grep "SSH_PASSWORDS" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "XMPP_CIPHERS" $CONFIGURATION_FILE; then
          XMPP_CIPHERS=$(grep "XMPP_CIPHERS" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "XMPP_ECC_CURVE" $CONFIGURATION_FILE; then
          XMPP_ECC_CURVE=$(grep "XMPP_ECC_CURVE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MY_USERNAME" $CONFIGURATION_FILE; then
          MY_USERNAME=$(grep "MY_USERNAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "DOMAIN_NAME" $CONFIGURATION_FILE; then
          # for backwards compatability
          DEFAULT_DOMAIN_NAME=$(grep "DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "DEFAULT_DOMAIN_NAME" $CONFIGURATION_FILE; then
          DEFAULT_DOMAIN_NAME=$(grep "DEFAULT_DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "DEFAULT_DOMAIN_CODE" $CONFIGURATION_FILE; then
          DEFAULT_DOMAIN_CODE=$(grep "DEFAULT_DOMAIN_CODE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "NAMESERVER1" $CONFIGURATION_FILE; then
          NAMESERVER1=$(grep "NAMESERVER1" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "NAMESERVER2" $CONFIGURATION_FILE; then
          NAMESERVER2=$(grep "NAMESERVER2" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "DEBIAN_REPO" $CONFIGURATION_FILE; then
          DEBIAN_REPO=$(grep "DEBIAN_REPO" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
          CHECK_MESSAGE="Check your internet connection, /etc/network/interfaces and /etc/resolv.conf, then delete $COMPLETION_FILE, run 'rm -fR /var/lib/apt/lists/* && apt-get update --fix-missing' and run this script again. If hash sum mismatches persist then try setting $DEBIAN_REPO to a different mirror and also change /etc/apt/sources.list."
      fi
      if grep -q "VOIP_PORT" $CONFIGURATION_FILE; then
          VOIP_PORT=$(grep "VOIP_PORT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "VOIP_SERVER_PASSWORD" $CONFIGURATION_FILE; then
          VOIP_SERVER_PASSWORD=$(grep "VOIP_SERVER_PASSWORD" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "SIP_PORT" $CONFIGURATION_FILE; then
          SIP_PORT=$(grep "SIP_PORT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "SIP_SERVER_PASSWORD" $CONFIGURATION_FILE; then
          SIP_SERVER_PASSWORD=$(grep "SIP_SERVER_PASSWORD" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "GET_IP_ADDRESS_URL" $CONFIGURATION_FILE; then
          GET_IP_ADDRESS_URL=$(grep "GET_IP_ADDRESS_URL" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "DDNS_PROVIDER" $CONFIGURATION_FILE; then
          DDNS_PROVIDER=$(grep "DDNS_PROVIDER" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "DDNS_USERNAME" $CONFIGURATION_FILE; then
          DDNS_USERNAME=$(grep "DDNS_USERNAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "DDNS_PASSWORD" $CONFIGURATION_FILE; then
          DDNS_PASSWORD=$(grep "DDNS_PASSWORD" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "LOCAL_NETWORK_STATIC_IP_ADDRESS" $CONFIGURATION_FILE; then
          LOCAL_NETWORK_STATIC_IP_ADDRESS=$(grep "LOCAL_NETWORK_STATIC_IP_ADDRESS" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "ENABLE_BABEL" $CONFIGURATION_FILE; then
          ENABLE_BABEL=$(grep "ENABLE_BABEL" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "ENABLE_BATMAN" $CONFIGURATION_FILE; then
          ENABLE_BATMAN=$(grep "ENABLE_BATMAN" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "ENABLE_CJDNS" $CONFIGURATION_FILE; then
          ENABLE_CJDNS=$(grep "ENABLE_CJDNS" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "CJDNS_COMMIT" $CONFIGURATION_FILE; then
          CJDNS_COMMIT=$(grep "CJDNS_COMMIT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "CJDNS_IPV6" $CONFIGURATION_FILE; then
          CJDNS_IPV6=$(grep "CJDNS_IPV6" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "CJDNS_PUBLIC_KEY" $CONFIGURATION_FILE; then
          CJDNS_PUBLIC_KEY=$(grep "CJDNS_PUBLIC_KEY" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "CJDNS_PRIVATE_KEY" $CONFIGURATION_FILE; then
          CJDNS_PRIVATE_KEY=$(grep "CJDNS_PRIVATE_KEY" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "ROUTER_IP_ADDRESS" $CONFIGURATION_FILE; then
          ROUTER_IP_ADDRESS=$(grep "ROUTER_IP_ADDRESS" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "CPU_CORES" $CONFIGURATION_FILE; then
          CPU_CORES=$(grep "CPU_CORES" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "WEBSERVER_LOG_LEVEL" $CONFIGURATION_FILE; then
          WEBSERVER_LOG_LEVEL=$(grep "WEBSERVER_LOG_LEVEL" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "ROUTE_THROUGH_TOR" $CONFIGURATION_FILE; then
          ROUTE_THROUGH_TOR=$(grep "ROUTE_THROUGH_TOR" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "WIKI_TITLE" $CONFIGURATION_FILE; then
          WIKI_TITLE=$(grep "WIKI_TITLE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MY_NAME" $CONFIGURATION_FILE; then
          MY_NAME=$(grep "MY_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MY_EMAIL_ADDRESS" $CONFIGURATION_FILE; then
          MY_EMAIL_ADDRESS=$(grep "MY_EMAIL_ADDRESS" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "INSTALLING_ON_BBB" $CONFIGURATION_FILE; then
          INSTALLING_ON_BBB=$(grep "INSTALLING_ON_BBB" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "SSH_PORT" $CONFIGURATION_FILE; then
          SSH_PORT=$(grep "SSH_PORT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "INSTALLED_WITHIN_DOCKER" $CONFIGURATION_FILE; then
          INSTALLED_WITHIN_DOCKER=$(grep "INSTALLED_WITHIN_DOCKER" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "PUBLIC_MAILING_LIST" $CONFIGURATION_FILE; then
          PUBLIC_MAILING_LIST=$(grep "PUBLIC_MAILING_LIST" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MICROBLOG_DOMAIN_NAME" $CONFIGURATION_FILE; then
          MICROBLOG_DOMAIN_NAME=$(grep "MICROBLOG_DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MICROBLOG_CODE" $CONFIGURATION_FILE; then
          MICROBLOG_CODE=$(grep "MICROBLOG_CODE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "HUBZILLA_DOMAIN_NAME" $CONFIGURATION_FILE; then
          HUBZILLA_DOMAIN_NAME=$(grep "HUBZILLA_DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "HUBZILLA_CODE" $CONFIGURATION_FILE; then
          HUBZILLA_CODE=$(grep "HUBZILLA_CODE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "OWNCLOUD_DOMAIN_NAME" $CONFIGURATION_FILE; then
          OWNCLOUD_DOMAIN_NAME=$(grep "OWNCLOUD_DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "OWNCLOUD_CODE" $CONFIGURATION_FILE; then
          OWNCLOUD_CODE=$(grep "OWNCLOUD_CODE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "WIKI_DOMAIN_NAME" $CONFIGURATION_FILE; then
          WIKI_DOMAIN_NAME=$(grep "WIKI_DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "WIKI_CODE" $CONFIGURATION_FILE; then
          WIKI_CODE=$(grep "WIKI_CODE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "FULLBLOG_DOMAIN_NAME" $CONFIGURATION_FILE; then
          FULLBLOG_DOMAIN_NAME=$(grep "FULLBLOG_DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "FULLBLOG_CODE" $CONFIGURATION_FILE; then
          FULLBLOG_CODE=$(grep "FULLBLOG_CODE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MY_BLOG_TITLE" $CONFIGURATION_FILE; then
          MY_BLOG_TITLE=$(grep "MY_BLOG_TITLE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MY_BLOG_SUBTITLE" $CONFIGURATION_FILE; then
          MY_BLOG_SUBTITLE=$(grep "MY_BLOG_SUBTITLE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "GPG_ENCRYPT_STORED_EMAIL" $CONFIGURATION_FILE; then
          GPG_ENCRYPT_STORED_EMAIL=$(grep "GPG_ENCRYPT_STORED_EMAIL" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MY_GPG_PUBLIC_KEY" $CONFIGURATION_FILE; then
          MY_GPG_PUBLIC_KEY=$(grep "MY_GPG_PUBLIC_KEY" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MY_GPG_PRIVATE_KEY" $CONFIGURATION_FILE; then
          MY_GPG_PRIVATE_KEY=$(grep "MY_GPG_PRIVATE_KEY" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MY_GPG_PUBLIC_KEY_ID" $CONFIGURATION_FILE; then
          MY_GPG_PUBLIC_KEY_ID=$(grep "MY_GPG_PUBLIC_KEY_ID" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "USB_DRIVE" $CONFIGURATION_FILE; then
          USB_DRIVE=$(grep "USB_DRIVE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MAX_PHP_MEMORY" $CONFIGURATION_FILE; then
          MAX_PHP_MEMORY=$(grep "MAX_PHP_MEMORY" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "TLS_TIME_SOURCE1" $CONFIGURATION_FILE; then
          TLS_TIME_SOURCE1=$(grep "TLS_TIME_SOURCE1" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "TLS_TIME_SOURCE2" $CONFIGURATION_FILE; then
          TLS_TIME_SOURCE2=$(grep "TLS_TIME_SOURCE2" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
  fi
}

# check an individual domain name
function test_domain_name {
  if [ $1 ]; then
      TEST_DOMAIN_NAME=$1
      validate_domain_name
      if [[ $TEST_DOMAIN_NAME != $1 ]]; then
          echo $TEST_DOMAIN_NAME
          exit 8528
      fi
  fi
}

# check that domain names are sensible
function check_domains {
  if [ $WIKI_DOMAIN_NAME ]; then
      test_domain_name "$WIKI_DOMAIN_NAME"

      if [[ "$test_domain_name" == "$OWNCLOUD_DOMAIN_NAME" ]]; then
          echo 'Wiki domain name is the same as Owncloud domain name. They must be different'
          exit 73863
      fi
      if [[ "$test_domain_name" == "$FULLBLOG_DOMAIN_NAME" ]]; then
          echo 'Wiki domain name is the same as blog domain name. They must be different'
          exit 97326
      fi
      if [[ "$test_domain_name" == "$MICROBLOG_DOMAIN_NAME" ]]; then
          echo 'Wiki domain name is the same as microblog domain name. They must be different'
          exit 36827
      fi
      if [[ "$test_domain_name" == "$HUBZILLA_DOMAIN_NAME" ]]; then
          echo 'Wiki domain name is the same as hubzilla domain name. They must be different'
          exit 65848
      fi
  fi

  if [ $OWNCLOUD_DOMAIN_NAME ]; then
      test_domain_name "$OWNCLOUD_DOMAIN_NAME"

      if [[ "$test_domain_name" == "$WIKI_DOMAIN_NAME" ]]; then
          echo 'Owncloud domain name is the same as wiki domain name. They must be different'
          exit 37994
      fi
      if [[ "$test_domain_name" == "$FULLBLOG_DOMAIN_NAME" ]]; then
          echo 'Owncloud domain name is the same as blog domain name. They must be different'
          exit 37936
      fi
      if [[ "$test_domain_name" == "$MICROBLOG_DOMAIN_NAME" ]]; then
          echo 'Owncloud domain name is the same as microblog domain name. They must be different'
          exit 36896
      fi
      if [[ "$test_domain_name" == "$HUBZILLA_DOMAIN_NAME" ]]; then
          echo 'Owncloud domain name is the same as hubzilla domain name. They must be different'
          exit 68365
      fi
  fi

  if [ $FULLBLOG_DOMAIN_NAME ]; then
      test_domain_name "$FULLBLOG_DOMAIN_NAME"

      if [[ "$test_domain_name" == "$WIKI_DOMAIN_NAME" ]]; then
          echo 'Blog domain name is the same as wiki domain name. They must be different'
          exit 62348
      fi
      if [[ "$test_domain_name" == "$OWNCLOUD_DOMAIN_NAME" ]]; then
          echo 'Blog domain name is the same as Owncloud domain name. They must be different'
          exit 84682
      fi
      if [[ "$test_domain_name" == "$MICROBLOG_DOMAIN_NAME" ]]; then
          echo 'Blog domain name is the same as microblog domain name. They must be different'
          exit 38236
      fi
      if [[ "$test_domain_name" == "$HUBZILLA_DOMAIN_NAME" ]]; then
          echo 'Blog domain name is the same as hubzilla domain name. They must be different'
          exit 35483
      fi
  fi

  if [ $MICROBLOG_DOMAIN_NAME ]; then
      test_domain_name "$MICROBLOG_DOMAIN_NAME"

      if [[ "$test_domain_name" == "$WIKI_DOMAIN_NAME" ]]; then
          echo 'Microblog domain name is the same as wiki domain name. They must be different'
          exit 73924
      fi
      if [[ "$test_domain_name" == "$OWNCLOUD_DOMAIN_NAME" ]]; then
          echo 'Microblog domain name is the same as Owncloud domain name. They must be different'
          exit 73683
      fi
      if [[ "$test_domain_name" == "$FULLBLOG_DOMAIN_NAME" ]]; then
          echo 'Microblog domain name is the same as blog domain name. They must be different'
          exit 26832
      fi
      if [[ "$test_domain_name" == "$HUBZILLA_DOMAIN_NAME" ]]; then
          echo 'Microblog domain name is the same as hubzilla domain name. They must be different'
          exit 678382
      fi
  fi

  if [ $HUBZILLA_DOMAIN_NAME ]; then
      test_domain_name "$HUBZILLA_DOMAIN_NAME"

      if [[ "$test_domain_name" == "$WIKI_DOMAIN_NAME" ]]; then
          echo 'Hubzilla domain name is the same as wiki domain name. They must be different'
          exit 83682
      fi
      if [[ "$test_domain_name" == "$OWNCLOUD_DOMAIN_NAME" ]]; then
          echo 'Hubzilla domain name is the same as Owncloud domain name. They must be different'
          exit 65192
      fi
      if [[ "$test_domain_name" == "$FULLBLOG_DOMAIN_NAME" ]]; then
          echo 'Hubzilla domain name is the same as blog domain name. They must be different'
          exit 74817
      fi
      if [[ "$test_domain_name" == "$MICROBLOG_DOMAIN_NAME" ]]; then
          echo 'Hubzilla domain name is the same as microblog domain name. They must be different'
          exit 83683
      fi
  fi
}

# Checks whether certificates were generated for the given hostname
function check_certificates {
  if [ ! $1 ]; then
      return
  fi
  if [[ $LETSENCRYPT_ENABLED != "yes" ]]; then
      if [ ! -f /etc/ssl/private/$1.key ]; then
          echo $"Private certificate for $CHECK_HOSTNAME was not created"
          exit 63959
      fi
      if [ ! -f /etc/ssl/certs/$1.crt ]; then
          echo $"Public certificate for $CHECK_HOSTNAME was not created"
          exit 7679
      fi
  else
      if [ ! -f /etc/letsencrypt/live/${1}/privkey.pem ]; then
          echo $"Private certificate for $CHECK_HOSTNAME was not created"
          exit 6282
      fi
      if [ ! -f /etc/letsencrypt/live/${1}/fullchain.pem ]; then
          echo $"Public certificate for $CHECK_HOSTNAME was not created"
          exit 5328
      fi
  fi
  if [ ! -f /etc/ssl/certs/$1.dhparam ]; then
      echo $"Diffie–Hellman parameters for $CHECK_HOSTNAME were not created"
      exit 5989
  fi
}

function install_not_on_BBB {
  if grep -Fxq "install_not_on_BBB" $COMPLETION_FILE; then
      return
  fi
  if [[ INSTALLING_ON_BBB == "yes" ]]; then
      return
  fi
  if [ ! $LOCAL_NETWORK_STATIC_IP_ADDRESS ]; then
      return
  fi

  echo '# This file describes the network interfaces available on your system' > /etc/network/interfaces
  echo '# and how to activate them. For more information, see interfaces(5).' >> /etc/network/interfaces
  echo '' >> /etc/network/interfaces
  echo '# The loopback network interface' >> /etc/network/interfaces
  echo 'auto lo' >> /etc/network/interfaces
  echo 'iface lo inet loopback' >> /etc/network/interfaces
  echo '' >> /etc/network/interfaces
  echo '# The primary network interface' >> /etc/network/interfaces
  echo 'auto eth0' >> /etc/network/interfaces
  echo 'iface eth0 inet static' >> /etc/network/interfaces
  echo "    address $LOCAL_NETWORK_STATIC_IP_ADDRESS" >> /etc/network/interfaces
  echo '    netmask 255.255.255.0' >> /etc/network/interfaces
  echo "    gateway $ROUTER_IP_ADDRESS" >> /etc/network/interfaces
  echo "    dns-nameservers $NAMESERVER1 $NAMESERVER2" >> /etc/network/interfaces
  echo '# Example to keep MAC address between reboots' >> /etc/network/interfaces
  echo '#hwaddress ether DE:AD:BE:EF:CA:FE' >> /etc/network/interfaces
  echo '' >> /etc/network/interfaces
  echo '# The secondary network interface' >> /etc/network/interfaces
  echo '#auto eth1' >> /etc/network/interfaces
  echo '#iface eth1 inet dhcp' >> /etc/network/interfaces
  echo '' >> /etc/network/interfaces
  echo '# WiFi Example' >> /etc/network/interfaces
  echo "#auto $WIFI_INTERFACE" >> /etc/network/interfaces
  echo "#iface $WIFI_INTERFACE inet dhcp" >> /etc/network/interfaces
  echo '#    wpa-ssid "essid"' >> /etc/network/interfaces
  echo '#    wpa-psk  "password"' >> /etc/network/interfaces
  echo '' >> /etc/network/interfaces
  echo '# Ethernet/RNDIS gadget (g_ether)' >> /etc/network/interfaces
  echo '# ... or on host side, usbnet and random hwaddr' >> /etc/network/interfaces
  echo '# Note on some boards, usb0 is automaticly setup with an init script' >> /etc/network/interfaces
  echo '#iface usb0 inet static' >> /etc/network/interfaces
  echo '#    address 192.168.7.2' >> /etc/network/interfaces
  echo '#    netmask 255.255.255.0' >> /etc/network/interfaces
  echo '#    network 192.168.7.0' >> /etc/network/interfaces
  echo '#    gateway 192.168.7.1' >> /etc/network/interfaces

  echo 'install_not_on_BBB' >> $COMPLETION_FILE
}

function mark_admin_user_account {
  if ! grep -q "Admin user:" $COMPLETION_FILE; then
      echo "Admin user:$MY_USERNAME" >> $COMPLETION_FILE
  fi
}

function mark_blog_domain {
  if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_DEVELOPER" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  if ! grep -q "Blog domain:" $COMPLETION_FILE; then
      echo "Blog domain:$FULLBLOG_DOMAIN_NAME" >> $COMPLETION_FILE
  fi
}

function randomize_cron {
  # The predictable default timing of Debian cron jobs might
  # be exploitable knowledge. Avoid too much predictability
  # by randomizing the times when cron jobs run
  if grep -Fxq "randomize_cron" $COMPLETION_FILE; then
      return
  fi

  # randomize the day on which the weekly cron job runs
  randdow=$(($RANDOM%6+1))
  sed -i "s|\* \* 7|* * $randdow|g" /etc/crontab

  # randomize the time when the weekly cron job runs
  randmin=$(($RANDOM%60))
  randhr=$(($RANDOM%3+1))
  sed -i "s|47 6|$randmin $randhr|g" /etc/crontab

  # randomize the time when the daily cron job runs
  randmin=$(($RANDOM%60))
  randhr=$(($RANDOM%3+4))
  sed -i "s|25 6\t\* \* \*|$randmin $randhr\t* * *|g" /etc/crontab

  # randomize the time when the hourly cron job runs
  randmin=$(($RANDOM%60))
  sed -i "s|17 \*\t|$randmin *\t|g" /etc/crontab

  # randomize monthly cron job time and day
  randmin=$(($RANDOM%60))
  randhr=$(($RANDOM%22+1))
  randdom=$(($RANDOM%27+1))
  sed -i "s|52 6\t|$randmin $randhr\t|g" /etc/crontab
  sed -i "s|\t1 \* \*|\t$randdom * *|g" /etc/crontab

  service cron restart

  echo 'randomize_cron' >> $COMPLETION_FILE
}

function get_cjdns_public_key {
  if [ -f /home/$MY_USERNAME/README ]; then
      if grep -q "cjdns public key" /home/$MY_USERNAME/README; then
          if [ ! $CJDNS_PUBLIC_KEY ]; then
              CJDNS_PUBLIC_KEY=$(cat /home/$MY_USERNAME/README | grep "cjdns public key" | awk -F ':' '{print $2}' | sed 's/^ *//')
          fi
      fi
  fi
}

function get_cjdns_private_key {
  if [ -f /home/$MY_USERNAME/README ]; then
      if grep -q "cjdns private key" /home/$MY_USERNAME/README; then
          if [ ! $CJDNS_PRIVATE_KEY ]; then
              CJDNS_PRIVATE_KEY=$(cat /home/$MY_USERNAME/README | grep "cjdns private key" | awk -F ':' '{print $2}' | sed 's/^ *//')
          fi
      fi
  fi
}

function get_cjdns_ipv6_address {
  if [ -f /home/$MY_USERNAME/README ]; then
      if grep -q "cjdns IPv6 address" /home/$MY_USERNAME/README; then
          if [ ! $CJDNS_IPV6 ]; then
              CJDNS_IPV6=$(cat /home/$MY_USERNAME/README | grep "cjdns IPv6 address" | awk -F ':' '{print $2}' | sed 's/^ *//')
          fi
      fi
  fi
}

function get_cjdns_port {
  if [ -f /home/$MY_USERNAME/README ]; then
      if grep -q "cjdns port" /home/$MY_USERNAME/README; then
          if [ ! $CJDNS_PORT ]; then
              CJDNS_PORT=$(cat /home/$MY_USERNAME/README | grep "cjdns port" | awk -F ':' '{print $2}' | sed 's/^ *//')
          fi
      fi
  fi
}

function get_cjdns_password {
  if [ -f /home/$MY_USERNAME/README ]; then
      if grep -q "cjdns password" /home/$MY_USERNAME/README; then
          if [ ! $CJDNS_PASSWORD ]; then
              CJDNS_PASSWORD=$(cat /home/$MY_USERNAME/README | grep "cjdns password" | awk -F ':' '{print $2}' | sed 's/^ *//')
          fi
      fi
  fi
}

# script to automatically renew any Let's Encrypt certificates
function letsencrypt_renewals {
  renewals_script=/etc/cron.monthly/letsencrypt
  renewal_failure_msg=$'The certificate for $LETSENCRYPT_DOMAIN could not be renewed'
  renewal_email_title=$'${PROJECT_NAME} Lets Encrypt certificate renewal'

  echo '#!/bin/bash' > $renewals_script
  echo '' >> $renewals_script
  echo "PROJECT_NAME='${PROJECT_NAME}'" >> $renewals_script
  echo 'COMPLETION_FILE=$HOME/${PROJECT_NAME}-completed.txt' >> $renewals_script
  echo '' >> $renewals_script
  echo 'if [ -d /etc/letsencrypt ]; then' >> $renewals_script
  echo -n '    ADMIN_USERNAME=$(cat $COMPLETION_FILE | grep "Admin user" | ' >> $renewals_script
  echo -n "awk -F ':' '{print " >> $renewals_script
  echo -n '$2' >> $renewals_script
  echo "}')" >> $renewals_script
  echo '    ADMIN_EMAIL_ADDRESS=$ADMIN_USERNAME@$HOSTNAME' >> $renewals_script
  echo '    for d in /etc/letsencrypt/live/*/ ; do' >> $renewals_script
  echo -n '        LETSENCRYPT_DOMAIN=$(echo "$d" | ' >> $renewals_script
  echo -n "awk -F '/' '{print " >> $renewals_script
  echo -n '$5' >> $renewals_script
  echo "}')" >> $renewals_script
  echo '        if [ -f /etc/nginx/sites-available/$LETSENCRYPT_DOMAIN ]; then' >> $renewals_script
  echo '            ${PROJECT_NAME}-renew-cert -h $LETSENCRYPT_DOMAIN -p letsencrypt' >> $renewals_script
  echo '            if [ ! "$?" = "0" ]; then' >> $renewals_script
  echo -n "                echo '$renewal_failure_msg' | mail -s '$renewal_email_title' " >> $renewals_script
  echo '$ADMIN_EMAIL_ADDRESS' >> $renewals_script
  echo '            fi' >> $renewals_script
  echo '        fi' >> $renewals_script
  echo '    done' >> $renewals_script
  echo 'fi' >> $renewals_script
  chmod +x $renewals_script
}

function save_firewall_settings {
  iptables-save > /etc/firewall.conf
  ip6tables-save > /etc/firewall6.conf
  printf '#!/bin/sh\n' > /etc/network/if-up.d/iptables
  printf 'iptables-restore < /etc/firewall.conf\n' >> /etc/network/if-up.d/iptables
  printf 'ip6tables-restore < /etc/firewall6.conf\n' >> /etc/network/if-up.d/iptables
  chmod +x /etc/network/if-up.d/iptables
}

function enable_ipv6 {
  # endure that ipv6 is enabled and can route
  sed -i 's/net.ipv6.conf.all.disable_ipv6.*/net.ipv6.conf.all.disable_ipv6 = 0/g' /etc/sysctl.conf
  #sed -i "s/net.ipv6.conf.all.accept_redirects.*/net.ipv6.conf.all.accept_redirects = 1/g" /etc/sysctl.conf
  #sed -i "s/net.ipv6.conf.all.accept_source_route.*/net.ipv6.conf.all.accept_source_route = 1/g" /etc/sysctl.conf
  sed -i "s/net.ipv6.conf.all.forwarding.*/net.ipv6.conf.all.forwarding=1/g" /etc/sysctl.conf
  echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
}

function mesh_cjdns {
  if [[ $ENABLE_CJDNS != "yes" ]]; then
      return
  fi

  # update to the next commit
  if [ -d /etc/cjdns ]; then
      if grep -q "cjdns commit" $COMPLETION_FILE; then
          CURRENT_CJDNS_COMMIT=$(grep "cjdns commit" $COMPLETION_FILE | awk -F ':' '{print $2}')
          if [[ "$CURRENT_CJDNS_COMMIT" != "$CJDNS_COMMIT" ]]; then
              cd /etc/cjdns
              git stash
              git checkout master
              git pull
              git checkout $CJDNS_COMMIT -b $CJDNS_COMMIT
              sed -i "s/cjdns commit.*/cjdns commit:$CJDNS_COMMIT/g" $COMPLETION_FILE
              ./do
          fi
      fi
  fi

  if grep -Fxq "mesh_cjdns" $COMPLETION_FILE; then
      return
  fi

  apt-get -y install nodejs git build-essential nmap

  # if a README exists then obtain the cjdns parameters
  get_cjdns_ipv6_address
  get_cjdns_public_key
  get_cjdns_private_key
  get_cjdns_port
  get_cjdns_password

  # special compile settings for running ./do on the Beaglebone Black
  if [[ $INSTALLING_ON_BBB == "yes" ]]; then
      CFLAGS="-O2 -march=armv7-a -mtune=cortex-a8 -mfpu=neon -ftree-vectorize -ffast-math -mfloat-abi=hard -marm -Wno-error=maybe-uninitialized"
      export LDFLAGS="$CFLAGS"
  fi

  if [ ! -d /etc/cjdns ]; then
      git clone $CJDNS_REPO /etc/cjdns
      cd /etc/cjdns

      git checkout $CJDNS_COMMIT -b $CJDNS_COMMIT
      if ! grep -q "cjdns commit" $COMPLETION_FILE; then
          echo "cjdns commit:$CJDNS_COMMIT" >> $COMPLETION_FILE
      else
          sed -i "s/cjdns commit.*/cjdns commit:$CJDNS_COMMIT/g" $COMPLETION_FILE
      fi

      ./do
      if [ ! "$?" = "0" ]; then
          exit 7439
      fi
      # create a configuration
      if [ ! -f /etc/cjdns/cjdroute.conf ]; then
          ./cjdroute --genconf > /etc/cjdns/cjdroute.conf
          if [ ! "$?" = "0" ]; then
              exit 5922
          fi
      fi
      # create a user to run as
      useradd cjdns
  else
      cd /etc/cjdns
      git pull
      ./do
      if [ ! "$?" = "0" ]; then
          exit 9926
      fi
  fi

  # set permissions
  chown -R cjdns:cjdns /etc/cjdns
  chmod 600 /etc/cjdns/cjdroute.conf

  /sbin/ip tuntap add mode tun user cjdns dev cjdroute0

  # insert values into the configuration file
  if [ $CJDNS_PRIVATE_KEY ]; then
      sed -i "s/\"privateKey\":.*/\"privateKey\": \"$CJDNS_PRIVATE_KEY\",/g" /etc/cjdns/cjdroute.conf
  else
      CJDNS_PRIVATE_KEY=$(cat /etc/cjdns/cjdroute.conf | grep '"privateKey"' | awk -F '"' '{print $4}' | sed -n 1p)
  fi
  if [ $CJDNS_PUBLIC_KEY ]; then
      sed -i "s/\"publicKey\":.*/\"publicKey\": \"$CJDNS_PUBLIC_KEY\",/g" /etc/cjdns/cjdroute.conf
  else
      CJDNS_PUBLIC_KEY=$(cat /etc/cjdns/cjdroute.conf | grep '"publicKey"' | awk -F '"' '{print $4}' | sed -n 1p)
  fi
  if [ $CJDNS_IPV6 ]; then
      sed -i "s/\"ipv6\":.*/\"ipv6\": \"$CJDNS_IPV6\",/g" /etc/cjdns/cjdroute.conf
  else
      CJDNS_IPV6=$(cat /etc/cjdns/cjdroute.conf | grep '"ipv6"' | awk -F '"' '{print $4}' | sed -n 1p)
  fi
  if [ $CJDNS_PASSWORD ]; then
      sed -i "0,/{\"password\":.*/s//{\"password\": \"$CJDNS_PASSWORD\"}/g" /etc/cjdns/cjdroute.conf
  else
      CJDNS_PASSWORD=$(cat /etc/cjdns/cjdroute.conf | grep '"password"' | awk -F '"' '{print $4}' | sed -n 1p)
  fi
  if [ $CJDNS_PORT ]; then
      sed -i "s/\"bind\": \"0.0.0.0:.*/\"bind\": \"0.0.0.0:$CJDNS_PORT\",/g" /etc/cjdns/cjdroute.conf
  else
      CJDNS_PORT=$(cat /etc/cjdns/cjdroute.conf | grep '"bind": "0.0.0.0:' | awk -F '"' '{print $4}' | awk -F ':' '{print $2}' | sed -n 1p)
  fi

  enable_ipv6

  echo '#!/bin/sh -e' > /etc/init.d/cjdns
  echo '### BEGIN INIT INFO' >> /etc/init.d/cjdns
  echo '# hyperboria.sh - An init script (/etc/init.d/) for cjdns' >> /etc/init.d/cjdns
  echo '# Provides:          cjdroute' >> /etc/init.d/cjdns
  echo '# Required-Start:    $remote_fs $network' >> /etc/init.d/cjdns
  echo '# Required-Stop:     $remote_fs $network' >> /etc/init.d/cjdns
  echo '# Default-Start:     2 3 4 5' >> /etc/init.d/cjdns
  echo '# Default-Stop:      0 1 6' >> /etc/init.d/cjdns
  echo '# Short-Description: Cjdns router' >> /etc/init.d/cjdns
  echo '# Description:       A routing engine designed for security, scalability, speed and ease of use.' >> /etc/init.d/cjdns
  echo '# cjdns git repo:    https://github.com/cjdelisle/cjdns/' >> /etc/init.d/cjdns
  echo '### END INIT INFO' >> /etc/init.d/cjdns
  echo '' >> /etc/init.d/cjdns
  echo 'PROG="cjdroute"' >> /etc/init.d/cjdns
  echo 'GIT_PATH="/etc/cjdns"' >> /etc/init.d/cjdns
  echo 'PROG_PATH="/etc/cjdns"' >> /etc/init.d/cjdns
  echo 'CJDNS_CONFIG="cjdroute.conf"' >> /etc/init.d/cjdns
  echo 'CJDNS_USER="cjdns"' >> /etc/init.d/cjdns
  echo "CJDNS_IP='$CJDNS_IPV6'" >> /etc/init.d/cjdns
  echo '' >> /etc/init.d/cjdns
  echo 'start() {' >> /etc/init.d/cjdns
  echo '     # Start it up with the user cjdns' >> /etc/init.d/cjdns
  echo '     if [ $(pgrep cjdroute | wc -l) != 0 ];' >> /etc/init.d/cjdns
  echo '     then' >> /etc/init.d/cjdns
  echo '         echo "cjdroute is already running. Doing nothing..."' >> /etc/init.d/cjdns
  echo '     else' >> /etc/init.d/cjdns
  echo '         echo " * Starting cjdroute"' >> /etc/init.d/cjdns
  echo '         su -c "$PROG_PATH/$PROG < $PROG_PATH/$CJDNS_CONFIG" - $CJDNS_USER' >> /etc/init.d/cjdns
  echo '         /sbin/ip addr add $CJDNS_IP/8 dev tun0' >> /etc/init.d/cjdns
  echo '         /sbin/ip link set mtu 1312 dev tun0' >> /etc/init.d/cjdns
  echo '         /sbin/ip link set tun0 up' >> /etc/init.d/cjdns
  echo '         /sbin/ip tuntap add mode tun user cjdns dev tun0' >> /etc/init.d/cjdns
  echo '     fi' >> /etc/init.d/cjdns
  echo '}' >> /etc/init.d/cjdns
  echo '' >> /etc/init.d/cjdns
  echo 'stop() {' >> /etc/init.d/cjdns
  echo '' >> /etc/init.d/cjdns
  echo '     if [ $(pgrep cjdroute | wc -l) != 2 ];' >> /etc/init.d/cjdns
  echo '     then' >> /etc/init.d/cjdns
  echo '         echo "cjdns isnt running."' >> /etc/init.d/cjdns
  echo '     else' >> /etc/init.d/cjdns
  echo '         echo "Killing cjdroute"' >> /etc/init.d/cjdns
  echo '         killall cjdroute' >> /etc/init.d/cjdns
  echo '     fi' >> /etc/init.d/cjdns
  echo '}' >> /etc/init.d/cjdns
  echo '' >> /etc/init.d/cjdns
  echo 'status() {' >> /etc/init.d/cjdns
  echo '     if [ $(pgrep cjdroute | wc -l) != 0 ];' >> /etc/init.d/cjdns
  echo '     then' >> /etc/init.d/cjdns
  echo '         echo "Cjdns is running"' >> /etc/init.d/cjdns
  echo '     else' >> /etc/init.d/cjdns
  echo '         echo "Cjdns is not running"' >> /etc/init.d/cjdns
  echo '     fi' >> /etc/init.d/cjdns
  echo '}' >> /etc/init.d/cjdns
  echo '' >> /etc/init.d/cjdns
  echo ' update() {' >> /etc/init.d/cjdns
  echo '     cd $GIT_PATH' >> /etc/init.d/cjdns
  echo '     echo "Updating..."' >> /etc/init.d/cjdns
  echo '     git pull' >> /etc/init.d/cjdns
  echo '     ./do' >> /etc/init.d/cjdns
  echo '}' >> /etc/init.d/cjdns
  echo '' >> /etc/init.d/cjdns
  echo '## Check to see if we are running as root first.' >> /etc/init.d/cjdns
  echo 'if [ "$(id -u)" != "0" ]; then' >> /etc/init.d/cjdns
  echo '    echo "This script must be run as root" 1>&2' >> /etc/init.d/cjdns
  echo '    exit 1' >> /etc/init.d/cjdns
  echo 'fi' >> /etc/init.d/cjdns
  echo '' >> /etc/init.d/cjdns
  echo 'case $1 in' >> /etc/init.d/cjdns
  echo '     start)' >> /etc/init.d/cjdns
  echo '         start' >> /etc/init.d/cjdns
  echo '         exit 0' >> /etc/init.d/cjdns
  echo '     ;;' >> /etc/init.d/cjdns
  echo '     stop)' >> /etc/init.d/cjdns
  echo '         stop' >> /etc/init.d/cjdns
  echo '         exit 0' >> /etc/init.d/cjdns
  echo '     ;;' >> /etc/init.d/cjdns
  echo '     reload|restart|force-reload)' >> /etc/init.d/cjdns
  echo '         stop' >> /etc/init.d/cjdns
  echo '         sleep 1' >> /etc/init.d/cjdns
  echo '         start' >> /etc/init.d/cjdns
  echo '         exit 0' >> /etc/init.d/cjdns
  echo '     ;;' >> /etc/init.d/cjdns
  echo '     status)' >> /etc/init.d/cjdns
  echo '         status' >> /etc/init.d/cjdns
  echo '         exit 0' >> /etc/init.d/cjdns
  echo '     ;;' >> /etc/init.d/cjdns
  echo '     update|upgrade)' >> /etc/init.d/cjdns
  echo '         update' >> /etc/init.d/cjdns
  echo '         stop' >> /etc/init.d/cjdns
  echo '         sleep 2' >> /etc/init.d/cjdns
  echo '         start' >> /etc/init.d/cjdns
  echo '         exit 0' >> /etc/init.d/cjdns
  echo '     ;;' >> /etc/init.d/cjdns
  echo '     **)' >> /etc/init.d/cjdns
  echo '         echo "Usage: $0 (start|stop|restart|status|update)" 1>&2' >> /etc/init.d/cjdns
  echo '         exit 1' >> /etc/init.d/cjdns
  echo '     ;;' >> /etc/init.d/cjdns
  echo 'esac' >> /etc/init.d/cjdns
  chmod +x /etc/init.d/cjdns
  update-rc.d cjdns defaults
  service cjdns start
  if [ ! "$?" = "0" ]; then
      systemctl status cjdns.service
      exit 8260
  fi

  apt-get -y install radvd
  echo 'interface eth0' > /etc/radvd.conf
  echo '{' >> /etc/radvd.conf
  echo '    AdvSendAdvert on;' >> /etc/radvd.conf
  echo '    prefix fdfc::1/64' >> /etc/radvd.conf
  echo '    {' >> /etc/radvd.conf
  echo '        AdvRouterAddr on;' >> /etc/radvd.conf
  echo '    };' >> /etc/radvd.conf
  echo '};' >> /etc/radvd.conf
  service radvd restart
  if [ ! "$?" = "0" ]; then
      systemctl status radvd.service
      exit 4395
  fi

  if ! grep -q "# Mesh Networking (cjdns)" /etc/network/interfaces; then
      echo '' >> /etc/network/interfaces
      echo '# Mesh Networking (cjdns)' >> /etc/network/interfaces
      echo 'iface eth0 inet6 static' >> /etc/network/interfaces
      echo '    pre-up modprobe ipv6' >> /etc/network/interfaces
      echo '    address fdfc:0000:0000:0000:0000:0000:0000:0001' >> /etc/network/interfaces
      echo '    netmask 64' >> /etc/network/interfaces
      service network-manager restart
      if [ ! "$?" = "0" ]; then
          systemctl status networking.service
          exit 6949
      fi
  fi

  ip6tables -A INPUT -p udp --dport $CJDNS_PORT -j ACCEPT
  ip6tables -A INPUT -p tcp --dport $CJDNS_PORT -j ACCEPT
  save_firewall_settings

  if ! grep -q "Mesh Networking (cjdns)" /home/$MY_USERNAME/README; then
      CURRENT_IP_ADDRESS=$(ip addr show | grep "inet " | sed -n 2p | awk -F ' ' '{print $2}' | awk -F '/' '{print $1}')

      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Mesh Networking (cjdns)' >> /home/$MY_USERNAME/README
      echo '=======================' >> /home/$MY_USERNAME/README
      echo "cjdns IPv6 address: $CJDNS_IPV6" >> /home/$MY_USERNAME/README
      echo "cjdns public key: $CJDNS_PUBLIC_KEY" >> /home/$MY_USERNAME/README
      echo "cjdns private key: $CJDNS_PRIVATE_KEY" >> /home/$MY_USERNAME/README
      echo "cjdns password: $CJDNS_PASSWORD" >> /home/$MY_USERNAME/README
      echo "cjdns port: $CJDNS_PORT" >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo "Forward port $CJDNS_PORT from your internet router to the Freedombone" >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Below is an example of your connection credentials' >> /home/$MY_USERNAME/README
      echo 'that you can give to other people so they can connect' >> /home/$MY_USERNAME/README
      echo 'to you using your default password' >> /home/$MY_USERNAME/README
      echo 'Adding a unique password for each user is advisable' >> /home/$MY_USERNAME/README
      echo 'so that leaks can be isolated.' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo "\"$CURRENT_IP_ADDRESS:$CJDNS_PORT\":{\"password\":\"$CJDNS_PASSWORD\",\"publicKey\":\"$CJDNS_PUBLIC_KEY\"}" >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'More is not better. 3-5 cjdns peers is good. 30 peers is bad.' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'NEVER USE A PUBLIC PEER. These degrade the network and make it centralized.' >> /home/$MY_USERNAME/README
      echo 'Each node can handle many peers, but no node can handle the entire internet.' >> /home/$MY_USERNAME/README
      echo 'As this network grows any public peer will simply become saturated and' >> /home/$MY_USERNAME/README
      echo 'useless causing issues for the entire network.' >> /home/$MY_USERNAME/README
      echo 'Please report anyone offering you a public peer as they are promoting shared' >> /home/$MY_USERNAME/README
      echo 'passwords which could lead to people pretending to be you. A peering pass' >> /home/$MY_USERNAME/README
      echo 'should not contain someone elses nickname or info but should contain yours' >> /home/$MY_USERNAME/README
      echo 'to ensure it is not shared. It also helps when editing the conf to know who' >> /home/$MY_USERNAME/README
      echo 'each password is for.' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Possible cjdns destinations of interest:' >> /home/$MY_USERNAME/README
      echo '    http://transitiontech.ca/faq' >> /home/$MY_USERNAME/README
      echo '    http://cjdns.ca/hypeirc.txt' >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
      chmod 600 /home/$MY_USERNAME/README
  fi

  echo 'mesh_cjdns' >> $COMPLETION_FILE
}

function mesh_cjdns_tools {
  if grep -Fxq "mesh_cjdns_tools" $COMPLETION_FILE; then
      return
  fi
  if [[ $ENABLE_CJDNS != "yes" ]]; then
      return
  fi
  if [ ! -d /etc/cjdns ]; then
      mesh_cjdns
  fi

  apt-get -y install golang mercurial
  if [ ! -f ~/.bashrc ]; then
      touch ~/.bashrc
  fi
  if ! grep -q "export GOPATH=" ~/.bashrc; then
      echo 'export GOPATH=$HOME/projects/go' >> ~/.bashrc
  fi
  if ! grep -q "export PATH=$PATH:$HOME/projects/go/bin" ~/.bashrc; then
      echo 'export PATH=$PATH:$HOME/projects/go/bin' >> ~/.bashrc
  fi
  . ~/.bashrc
  export GOPATH=$HOME/projects/go
  export PATH=$PATH:$HOME/projects/go/bin
  go get github.com/inhies/cjdcmd
  if [ ! -f $HOME/projects/go/bin/cjdcmd ]; then
      echo 'cjdcmd was not compiled. Check your golang installation'
      exit 7439
  fi
  cp $HOME/projects/go/bin/cjdcmd /usr/bin

  # initialise from the cjdns config
  /usr/bin/cjdcmd cjdnsadmin -file /etc/cjdns/cjdroute.conf

  echo 'mesh_cjdns_tools' >> $COMPLETION_FILE
}

function install_zeronet_blog {
  if [[ $SYSTEM_TYPE != "$VARIANT_MESH" ]]; then
      return
  fi

  if [ -d /opt/zeronet/ZeroBlog ]; then
      if grep -q "ZeroNet Blog commit" $COMPLETION_FILE; then
          CURRENT_ZERONET_BLOG_COMMIT=$(grep "ZeroNet Blog commit" $COMPLETION_FILE | awk -F ':' '{print $2}')
          if [[ "$CURRENT_ZERONET_BLOG_COMMIT" != "$ZERONET_BLOG_COMMIT" ]]; then
              cd /opt/zeronet/ZeroBlog
              git stash
              git checkout master
              git pull
              git checkout $ZERONET_BLOG_COMMIT -b $ZERONET_BLOG_COMMIT
              sed -i "s/ZeroNet Blog commit.*/ZeroNet Blog commit:$ZERONET_BLOG_COMMIT/g" $COMPLETION_FILE
          fi
      else
          echo "ZeroNet Blog commit:$ZERONET_BLOG_COMMIT" >> $COMPLETION_FILE
      fi
  fi

  if grep -Fxq "install_zeronet_blog" $COMPLETION_FILE; then
      return
  fi

  if [ ! -f /home/$MY_USERNAME/README ]; then
      touch /home/$MY_USERNAME/README
  fi

  if grep -q "ZeroNet Blog address" /home/$MY_USERNAME/README; then
      return
  fi

  if [ ! -d /etc/avahi ]; then
      echo 'Avahi is not installed'
      exit 736
  fi

  ZERONET_DEFAULT_BLOG_TITLE="${MY_USERNAME}'s Blog"

  cd /opt/zeronet
  python zeronet.py --batch siteCreate 2> /opt/zeronet/blog.txt
  if [ ! -f /opt/zeronet/blog.txt ]; then
      echo 'Unable to create blog'
      exit 479
  fi
  blog_address=$(cat blog.txt | grep "Site address" | awk -F ':' '{print $2}')
  blog_private_key=$(cat blog.txt | grep "Site private key" | awk -F ':' '{print $2}')
  ZERONET_BLOG_ADDRESS=${blog_address//[[:blank:]]/}
  ZERONET_BLOG_PRIVATE_KEY=${blog_private_key//[[:blank:]]/}

  if [ ${#ZERONET_BLOG_ADDRESS} -lt 20 ]; then
      echo $"Address:    $ZERONET_BLOG_ADDRESS"
      echo $"Public key: $ZERONET_BLOG_PRIVATE_KEY"
      echo $'Unable to create zeronet blog address'
      exit 7358
  fi

  if [ ${#ZERONET_BLOG_PRIVATE_KEY} -lt 20 ]; then
      echo $"Address:    $ZERONET_BLOG_ADDRESS"
      echo $"Public key: $ZERONET_BLOG_PRIVATE_KEY"
      echo $'Unable to create zeronet blog private key'
      exit 1639
  fi

  if [ ! -d "/opt/zeronet/data/$ZERONET_BLOG_ADDRESS" ]; then
      echo $"Unable to find site directory: /opt/zeronet/data/$ZERONET_BLOG_ADDRESS"
      exit 7638
  fi

  git clone $ZERONET_BLOG_REPO ZeroBlog
  if [ ! -d /opt/zeronet/ZeroBlog ]; then
      echo 'ZeroBlog repo could not be cloned'
      exit 6739
  fi
  cd /opt/zeronet/ZeroBlog
  git checkout $ZERONET_BLOG_COMMIT -b $ZERONET_BLOG_COMMIT
  if ! grep -q "ZeroNet Blog commit" $COMPLETION_FILE; then
      echo "ZeroNet Blog commit:$ZERONET_BLOG_COMMIT" >> $COMPLETION_FILE
  else
      sed -i "s/ZeroNet Blog commit.*/ZeroNet Blog commit:$ZERONET_BLOG_COMMIT/g" $COMPLETION_FILE
  fi

  echo $"ZeroNet Blog address:     $ZERONET_BLOG_ADDRESS"
  echo $"ZeroNet Blog private key: $ZERONET_BLOG_PRIVATE_KEY"
  cp -r /opt/zeronet/ZeroBlog/* /opt/zeronet/data/$ZERONET_BLOG_ADDRESS

  if [ ! -d /opt/zeronet/data/$ZERONET_BLOG_ADDRESS/data ]; then
      mkdir /opt/zeronet/data/$ZERONET_BLOG_ADDRESS/data
  fi
  cp /opt/zeronet/data/$ZERONET_BLOG_ADDRESS/data-default/data.json /opt/zeronet/data/$ZERONET_BLOG_ADDRESS/data
  sed -i "s/MyZeroBlog/$ZERONET_DEFAULT_BLOG_TITLE/g" /opt/zeronet/data/$ZERONET_BLOG_ADDRESS/data/data.json
  sed -i "s/My ZeroBlog./$ZERONET_DEFAULT_BLOG_TAGLINE/g" /opt/zeronet/data/$ZERONET_BLOG_ADDRESS/data/data.json
  sed -i "s/ZeroBlog Demo/$ZERONET_DEFAULT_BLOG_TITLE/g" /opt/zeronet/data/$ZERONET_BLOG_ADDRESS/index.html
  sed -i "s|<h3 class=\"description\">.*|<h3 class=\"description\">$ZERONET_DEFAULT_BLOG_TAGLINE</h3>|g" /opt/zeronet/data/$ZERONET_BLOG_ADDRESS/index.html
  sed -i "s/Blogging platform Demo/Blogging platform/g" /opt/zeronet/data/$ZERONET_BLOG_ADDRESS/content.json
  python zeronet.py siteSign $ZERONET_BLOG_ADDRESS $ZERONET_BLOG_PRIVATE_KEY

  # Add an avahi service
  echo '<?xml version="1.0" standalone="no"?><!--*-nxml-*-->' > /tmp/zeronet-blog.service
  echo '<!DOCTYPE service-group SYSTEM "avahi-service.dtd">' >> /tmp/zeronet-blog.service
  echo '<service-group>' >> /tmp/zeronet-blog.service
  echo '  <name replace-wildcards="yes">%h ZeroNet Blog</name>' >> /tmp/zeronet-blog.service
  echo '  <service>' >> /tmp/zeronet-blog.service
  echo '    <type>_zeronet._udp</type>' >> /tmp/zeronet-blog.service
  echo "    <port>$ZERONET_PORT</port>" >> /tmp/zeronet-blog.service
  echo "    <txt-record>$ZERONET_URL/$ZERONET_BLOG_ADDRESS</txt-record>" >> /tmp/zeronet-blog.service
  echo '  </service>' >> /tmp/zeronet-blog.service
  echo '</service-group>' >> /tmp/zeronet-blog.service
  cp /tmp/zeronet-blog.service /etc/avahi/services/zeronet-blog.service

  if [ ! -d /home/$MY_USERNAME/.config/zeronet ]; then
      mkdir -p /home/$MY_USERNAME/.config/zeronet
      chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.config
  fi
  echo "$ZERONET_URL/$ZERONET_BLOG_ADDRESS" > /home/$MY_USERNAME/.config/zeronet/myblog

  if ! grep -q "ZeroNet Blog address" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo "ZeroNet Blog address: $ZERONET_BLOG_ADDRESS" >> /home/$MY_USERNAME/README
      echo "ZeroNet Blog private key: $ZERONET_BLOG_PRIVATE_KEY" >> /home/$MY_USERNAME/README
  fi

  echo 'install_zeronet_blog' >> $COMPLETION_FILE
}

function install_zeronet_mail {
  if [[ $SYSTEM_TYPE != "$VARIANT_MESH" ]]; then
      return
  fi

  if [ -d /opt/zeronet/ZeroMail ]; then
      if grep -q "ZeroNet Mail commit" $COMPLETION_FILE; then
          CURRENT_ZERONET_MAIL_COMMIT=$(grep "ZeroNet Mail commit" $COMPLETION_FILE | awk -F ':' '{print $2}')
          if [[ "$CURRENT_ZERONET_MAIL_COMMIT" != "$ZERONET_MAIL_COMMIT" ]]; then
              cd /opt/zeronet/ZeroMail
              git stash
              git checkout master
              git pull
              git checkout $ZERONET_MAIL_COMMIT -b $ZERONET_MAIL_COMMIT
              sed -i "s/ZeroNet Mail commit.*/ZeroNet Mail commit:$ZERONET_MAIL_COMMIT/g" $COMPLETION_FILE
          fi
      else
          echo "ZeroNet Mail commit:$ZERONET_MAIL_COMMIT" >> $COMPLETION_FILE
      fi
  fi

  if grep -Fxq "install_zeronet_mail" $COMPLETION_FILE; then
      return
  fi

  if [ ! -f /home/$MY_USERNAME/README ]; then
      touch /home/$MY_USERNAME/README
  fi

  if grep -q "ZeroNet Mail address" /home/$MY_USERNAME/README; then
      return
  fi

  if [ ! -d /etc/avahi ]; then
      echo 'Avahi is not installed'
      exit 736
  fi

  ZERONET_DEFAULT_MAIL_TITLE="${MY_USERNAME}'s Mail"

  cd /opt/zeronet
  python zeronet.py --batch siteCreate 2> /opt/zeronet/mail.txt
  if [ ! -f /opt/zeronet/mail.txt ]; then
      echo 'Unable to create mail'
      exit 479
  fi
  mail_address=$(cat mail.txt | grep "Site address" | awk -F ':' '{print $2}')
  mail_private_key=$(cat mail.txt | grep "Site private key" | awk -F ':' '{print $2}')
  ZERONET_MAIL_ADDRESS=${mail_address//[[:blank:]]/}
  ZERONET_MAIL_PRIVATE_KEY=${mail_private_key//[[:blank:]]/}

  if [ ${#ZERONET_MAIL_ADDRESS} -lt 20 ]; then
      echo $"Address:    $ZERONET_MAIL_ADDRESS"
      echo $"Public key: $ZERONET_MAIL_PRIVATE_KEY"
      echo $'Unable to create zeronet mail address'
      exit 7358
  fi

  if [ ${#ZERONET_MAIL_PRIVATE_KEY} -lt 20 ]; then
      echo $"Address:    $ZERONET_MAIL_ADDRESS"
      echo $"Public key: $ZERONET_MAIL_PRIVATE_KEY"
      echo $'Unable to create zeronet mail private key'
      exit 1639
  fi

  if [ ! -d "/opt/zeronet/data/$ZERONET_MAIL_ADDRESS" ]; then
      echo $"Unable to find site directory: /opt/zeronet/data/$ZERONET_MAIL_ADDRESS"
      exit 7638
  fi

  git clone $ZERONET_MAIL_REPO ZeroMail
  if [ ! -d /opt/zeronet/ZeroMail ]; then
      echo 'ZeroMail repo could not be cloned'
      exit 6739
  fi
  cd /opt/zeronet/ZeroMail
  git checkout $ZERONET_MAIL_COMMIT -b $ZERONET_MAIL_COMMIT
  if ! grep -q "ZeroNet Mail commit" $COMPLETION_FILE; then
      echo "ZeroNet Mail commit:$ZERONET_MAIL_COMMIT" >> $COMPLETION_FILE
  else
      sed -i "s/ZeroNet Mail commit.*/ZeroNet Mail commit:$ZERONET_MAIL_COMMIT/g" $COMPLETION_FILE
  fi

  echo $"ZeroNet Mail address:     $ZERONET_MAIL_ADDRESS"
  echo $"ZeroNet Mail private key: $ZERONET_MAIL_PRIVATE_KEY"
  cp -r /opt/zeronet/ZeroMail/* /opt/zeronet/data/$ZERONET_MAIL_ADDRESS

  if [ ! -d /opt/zeronet/data/$ZERONET_MAIL_ADDRESS/data ]; then
      mkdir /opt/zeronet/data/$ZERONET_MAIL_ADDRESS/data
  fi
  cp /opt/zeronet/data/$ZERONET_MAIL_ADDRESS/data-default/data.json /opt/zeronet/data/$ZERONET_MAIL_ADDRESS/data
  sed -i "s/MyZeroMail/$ZERONET_DEFAULT_MAIL_TITLE/g" /opt/zeronet/data/$ZERONET_MAIL_ADDRESS/data/data.json
  sed -i "s/My ZeroMail./$ZERONET_DEFAULT_MAIL_TAGLINE/g" /opt/zeronet/data/$ZERONET_MAIL_ADDRESS/data/data.json
  sed -i "s/ZeroMail Demo/$ZERONET_DEFAULT_MAIL_TITLE/g" /opt/zeronet/data/$ZERONET_MAIL_ADDRESS/index.html
  sed -i "s|<h3 class=\"description\">.*|<h3 class=\"description\">$ZERONET_DEFAULT_MAIL_TAGLINE</h3>|g" /opt/zeronet/data/$ZERONET_MAIL_ADDRESS/index.html
  sed -i "s/Mailging platform Demo/Mailging platform/g" /opt/zeronet/data/$ZERONET_MAIL_ADDRESS/content.json
  python zeronet.py siteSign $ZERONET_MAIL_ADDRESS $ZERONET_MAIL_PRIVATE_KEY

  # Add an avahi service
  echo '<?xml version="1.0" standalone="no"?><!--*-nxml-*-->' > /tmp/zeronet-mail.service
  echo '<!DOCTYPE service-group SYSTEM "avahi-service.dtd">' >> /tmp/zeronet-mail.service
  echo '<service-group>' >> /tmp/zeronet-mail.service
  echo '  <name replace-wildcards="yes">%h ZeroNet Mail</name>' >> /tmp/zeronet-mail.service
  echo '  <service>' >> /tmp/zeronet-mail.service
  echo '    <type>_zeronet._udp</type>' >> /tmp/zeronet-mail.service
  echo "    <port>$ZERONET_PORT</port>" >> /tmp/zeronet-mail.service
  echo "    <txt-record>$ZERONET_URL/$ZERONET_MAIL_ADDRESS</txt-record>" >> /tmp/zeronet-mail.service
  echo '  </service>' >> /tmp/zeronet-mail.service
  echo '</service-group>' >> /tmp/zeronet-mail.service
  cp /tmp/zeronet-mail.service /etc/avahi/services/zeronet-mail.service

  if [ ! -d /home/$MY_USERNAME/.config/zeronet ]; then
      mkdir -p /home/$MY_USERNAME/.config/zeronet
      chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.config
  fi
  echo "$ZERONET_URL/$ZERONET_MAIL_ADDRESS" > /home/$MY_USERNAME/.config/zeronet/mymail

  if ! grep -q "ZeroNet Mail address" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo "ZeroNet Mail address: $ZERONET_MAIL_ADDRESS" >> /home/$MY_USERNAME/README
      echo "ZeroNet Mail private key: $ZERONET_MAIL_PRIVATE_KEY" >> /home/$MY_USERNAME/README
  fi

  echo 'install_zeronet_mail' >> $COMPLETION_FILE
}

function install_zeronet_forum {
  if [[ $SYSTEM_TYPE != "$VARIANT_MESH" ]]; then
      return
  fi

  # update to the next commit
  if [ -d /opt/zeronet/ZeroTalk ]; then
      if grep -q "ZeroNet Forum commit" $COMPLETION_FILE; then
          CURRENT_ZERONET_FORUM_COMMIT=$(grep "ZeroNet Forum commit" $COMPLETION_FILE | awk -F ':' '{print $2}')
          if [[ "$CURRENT_ZERONET_FORUM_COMMIT" != "$ZERONET_FORUM_COMMIT" ]]; then
              cd /opt/zeronet/ZeroTalk
              git stash
              git checkout master
              git pull
              git checkout $ZERONET_FORUM_COMMIT -b $ZERONET_FORUM_COMMIT
              sed -i "s/ZeroNet Forum commit.*/ZeroNet Forum commit:$ZERONET_FORUM_COMMIT/g" $COMPLETION_FILE
          fi
      else
          echo "ZeroNet Forum commit:$ZERONET_FORUM_COMMIT" >> $COMPLETION_FILE
      fi
  fi

  if grep -Fxq "install_zeronet_forum" $COMPLETION_FILE; then
      return
  fi

  if [ ! -f /home/$MY_USERNAME/README ]; then
      touch /home/$MY_USERNAME/README
  fi

  if grep -q "ZeroNet Forum address" /home/$MY_USERNAME/README; then
      return
  fi

  if [ ! -d /etc/avahi ]; then
      echo 'Avahi is not installed'
      exit 736
  fi

  ZERONET_DEFAULT_FORUM_TITLE="${MY_USERNAME}'s Forum"

  cd /opt/zeronet
  python zeronet.py --batch siteCreate 2> /opt/zeronet/forum.txt
  if [ ! -f /opt/zeronet/forum.txt ]; then
      echo 'Unable to create forum'
      exit 479
  fi
  forum_address=$(cat forum.txt | grep "Site address" | awk -F ':' '{print $2}')
  forum_private_key=$(cat forum.txt | grep "Site private key" | awk -F ':' '{print $2}')
  ZERONET_FORUM_ADDRESS=${forum_address//[[:blank:]]/}
  ZERONET_FORUM_PRIVATE_KEY=${forum_private_key//[[:blank:]]/}

  if [ ${#ZERONET_FORUM_ADDRESS} -lt 20 ]; then
      echo $"Address:    $ZERONET_FORUM_ADDRESS"
      echo $"Public key: $ZERONET_FORUM_PRIVATE_KEY"
      echo $'Unable to create zeronet forum address'
      exit 76352
  fi

  if [ ${#ZERONET_FORUM_PRIVATE_KEY} -lt 20 ]; then
      echo $"Address:    $ZERONET_FORUM_ADDRESS"
      echo $"Public key: $ZERONET_FORUM_PRIVATE_KEY"
      echo $'Unable to create zeronet forum private key'
      exit 87356
  fi

  if [ ! -d "/opt/zeronet/data/$ZERONET_FORUM_ADDRESS" ]; then
      echo $"Unable to find site directory: /opt/zeronet/data/$ZERONET_FORUM_ADDRESS"
      exit 7638
  fi

  git clone $ZERONET_FORUM_REPO ZeroTalk
  if [ ! -d /opt/zeronet/ZeroTalk ]; then
      echo $'ZeroTalk repo could not be cloned'
      exit 6739
  fi
  git checkout $ZERONET_FORUM_COMMIT -b $ZERONET_FORUM_COMMIT
  if ! grep -q "ZeroNet Forum commit" $COMPLETION_FILE; then
      echo "ZeroNet Forum commit:$ZERONET_FORUM_COMMIT" >> $COMPLETION_FILE
  else
      sed -i "s/ZeroNet Forum commit.*/ZeroNet Forum commit:$ZERONET_FORUM_COMMIT/g" $COMPLETION_FILE
  fi

  echo $"Forum address:     $ZERONET_FORUM_ADDRESS"
  echo $"Forum private key: $ZERONET_FORUM_PRIVATE_KEY"
  cp -r /opt/zeronet/ZeroTalk/* /opt/zeronet/data/$ZERONET_FORUM_ADDRESS
  sed -i "s/ZeroBoard/$ZERONET_DEFAULT_FORUM_TITLE/g" /opt/zeronet/data/$ZERONET_FORUM_ADDRESS/index.html
  sed -i "s/ZeroTalk/$ZERONET_DEFAULT_FORUM_TITLE/g" /opt/zeronet/data/$ZERONET_FORUM_ADDRESS/index.html
  sed -i "s|Demo for dynamic, decentralized content publishing.|$ZERONET_DEFAULT_FORUM_TAGLINE|g" /opt/zeronet/data/$ZERONET_FORUM_ADDRESS/index.html
  sed -i 's/Messaging Board Demo/Messaging Board/g' /opt/zeronet/data/$ZERONET_FORUM_ADDRESS/content.json
  sed -i "s/ZeroBoard/$ZERONET_DEFAULT_FORUM_TITLE/g" /opt/zeronet/data/$ZERONET_FORUM_ADDRESS/content.json
  python zeronet.py siteSign $ZERONET_FORUM_ADDRESS $ZERONET_FORUM_PRIVATE_KEY --inner_path data/users/content.json

  # Add an avahi service
  echo '<?xml version="1.0" standalone="no"?><!--*-nxml-*-->' > /tmp/zeronet-forum.service
  echo '<!DOCTYPE service-group SYSTEM "avahi-service.dtd">' >> /tmp/zeronet-forum.service
  echo '<service-group>' >> /tmp/zeronet-forum.service
  echo '  <name replace-wildcards="yes">%h ZeroNet Forum</name>' >> /tmp/zeronet-forum.service
  echo '  <service>' >> /tmp/zeronet-forum.service
  echo '    <type>_zeronet._udp</type>' >> /tmp/zeronet-forum.service
  echo "    <port>$ZERONET_PORT</port>" >> /tmp/zeronet-forum.service
  echo "    <txt-record>$ZERONET_URL/$ZERONET_FORUM_ADDRESS</txt-record>" >> /tmp/zeronet-forum.service
  echo '  </service>' >> /tmp/zeronet-forum.service
  echo '</service-group>' >> /tmp/zeronet-forum.service
  sudo cp /tmp/zeronet-forum.service /etc/avahi/services/zeronet-forum.service

  if [ ! -d /home/$MY_USERNAME/.config/zeronet ]; then
      mkdir -p /home/$MY_USERNAME/.config/zeronet
      chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.config
  fi
  echo "$ZERONET_URL/$ZERONET_FORUM_ADDRESS" > /home/$MY_USERNAME/.config/zeronet/myforum

  if ! grep -q "ZeroNet Forum address" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo "ZeroNet Forum address: $ZERONET_FORUM_ADDRESS" >> /home/$MY_USERNAME/README
      echo "ZeroNet Forum private key: $ZERONET_FORUM_PRIVATE_KEY" >> /home/$MY_USERNAME/README
  fi

  echo 'install_zeronet_forum' >> $COMPLETION_FILE
}

function install_zeronet {
  if [[ $SYSTEM_TYPE != "$VARIANT_MESH" ]]; then
      return
  fi

  # update to the next commit
  if [ -d /opt/zeronet ]; then
      if grep -q "ZeroNet commit" $COMPLETION_FILE; then
          CURRENT_ZERONET_COMMIT=$(grep "ZeroNet commit" $COMPLETION_FILE | awk -F ':' '{print $2}')
          if [[ "$CURRENT_ZERONET_COMMIT" != "$ZERONET_COMMIT" ]]; then
              cd /opt/zeronet
              git stash
              git checkout master
              git pull
              git checkout $ZERONET_COMMIT -b $ZERONET_COMMIT
              sed -i "s/ZeroNet commit.*/ZeroNet commit:$ZERONET_COMMIT/g" $COMPLETION_FILE
              systemctl restart zeronet.service
          fi
      else
          echo "ZeroNet commit:$ZERONET_COMMIT" >> $COMPLETION_FILE
      fi
  fi

  if grep -Fxq "install_zeronet" $COMPLETION_FILE; then
      return
  fi

  apt-get -y install python python-msgpack python-gevent
  apt-get -y install python-pip bittornado
  pip install msgpack-python --upgrade

  useradd -d /opt/zeronet/ -s /bin/false zeronet
  git clone $ZERONET_REPO /opt/zeronet
  if [ ! -d /opt/zeronet ]; then
      exit 56823
  fi
  cd /opt/zeronet
  git checkout $ZERONET_COMMIT -b $ZERONET_COMMIT
  if ! grep -q "ZeroNet commit" $COMPLETION_FILE; then
      echo "ZeroNet commit:$ZERONET_COMMIT" >> $COMPLETION_FILE
  else
      sed -i "s/ZeroNet commit.*/ZeroNet commit:$ZERONET_COMMIT/g" $COMPLETION_FILE
  fi
  sudo chown -R zeronet:zeronet /opt/zeronet

  #git checkout bashrc/bootstrap-file
  # Hack to ensure that the file access port is opened
  # This is because zeronet normally relies on an internet site
  # to do this, but on a purely local mesh the internet isn't available
  sed -i 's|fileserver_port = 0|fileserver_port = config.fileserver_port\n            sys.modules["main"].file_server.port_opened = True|g' /opt/zeronet/src/Site/Site.py

  echo '[Unit]' > /etc/systemd/system/zeronet.service
  echo 'Description=Zeronet Server' >> /etc/systemd/system/zeronet.service
  echo 'After=syslog.target' >> /etc/systemd/system/zeronet.service
  echo 'After=network.target' >> /etc/systemd/system/zeronet.service
  echo '[Service]' >> /etc/systemd/system/zeronet.service
  echo 'Type=simple' >> /etc/systemd/system/zeronet.service
  echo 'User=zeronet' >> /etc/systemd/system/zeronet.service
  echo 'Group=zeronet' >> /etc/systemd/system/zeronet.service
  echo 'WorkingDirectory=/opt/zeronet' >> /etc/systemd/system/zeronet.service
  echo "ExecStart=/usr/bin/python zeronet.py --ip_external ${DEFAULT_DOMAIN_NAME}.local --trackers_file /opt/zeronet/bootstrap" >> /etc/systemd/system/zeronet.service
  echo '' >> /etc/systemd/system/zeronet.service
  echo 'TimeoutSec=300' >> /etc/systemd/system/zeronet.service
  echo '' >> /etc/systemd/system/zeronet.service
  echo '[Install]' >> /etc/systemd/system/zeronet.service
  echo 'WantedBy=multi-user.target' >> /etc/systemd/system/zeronet.service

  echo '[Unit]' > /etc/systemd/system/tracker.service
  echo 'Description=Torrent Tracker' >> /etc/systemd/system/tracker.service
  echo 'After=syslog.target' >> /etc/systemd/system/tracker.service
  echo 'After=network.target' >> /etc/systemd/system/tracker.service
  echo '[Service]' >> /etc/systemd/system/tracker.service
  echo 'Type=simple' >> /etc/systemd/system/tracker.service
  echo 'User=tracker' >> /etc/systemd/system/tracker.service
  echo 'Group=tracker' >> /etc/systemd/system/tracker.service
  echo 'WorkingDirectory=/opt/tracker' >> /etc/systemd/system/tracker.service
  echo "ExecStart=/usr/bin/bttrack --port $TRACKER_PORT --dfile /opt/tracker/dstate --logfile /opt/tracker/tracker.log --nat_check 0 --scrape_allowed full --ipv6_enabled 0" >> /etc/systemd/system/tracker.service
  echo '' >> /etc/systemd/system/tracker.service
  echo 'TimeoutSec=300' >> /etc/systemd/system/tracker.service
  echo '' >> /etc/systemd/system/tracker.service
  echo '[Install]' >> /etc/systemd/system/tracker.service
  echo 'WantedBy=multi-user.target' >> /etc/systemd/system/tracker.service

  useradd -d /opt/tracker/ -s /bin/false tracker
  if [ ! -d /opt/tracker ]; then
      mkdir /opt/tracker
  fi
  chown -R tracker:tracker /opt/tracker

  # publish regularly
  if ! grep -q "zeronetavahi" /etc/crontab; then
      echo "* *     * * *   root    zeronetavahi > /dev/null" >> /etc/crontab
  fi

  systemctl enable tracker.service
  systemctl enable zeronet.service
  systemctl daemon-reload

  systemctl start tracker.service
  systemctl start zeronet.service

  echo 'mesh_zeronet' >> $COMPLETION_FILE
}

function install_vpn_tunnel {
  if ! grep -q "repo.universe-factory.net" /etc/apt/sources.list; then
      echo 'deb http://repo.universe-factory.net/debian/ sid main' >> /etc/apt/sources.list
      gpg --keyserver pgpkeys.mit.edu --recv-key 16EF3F64CB201D9C
      if [ ! "$?" = "0" ]; then
          exit 76272
      fi
      gpg -a --export 16EF3F64CB201D9C | sudo apt-key add -
      apt-get update
      apt-get -y install fastd
      if [ ! "$?" = "0" ]; then
          exit 52026
      fi
  fi
}

# ath9k_htc driver
function install_atheros_wifi {
  if grep -Fxq "install_atheros_wifi" $COMPLETION_FILE; then
      return
  fi
  if [ $INSTALLING_ON_BBB != "yes" ]; then
      return
  fi
  if [[ $ENABLE_BABEL != "yes" && $ENABLE_BATMAN != "yes" && $ENABLE_CJDNS != "yes" ]]; then
      return
  fi
  if [ -d $INSTALL_DIR/open-ath9k-htc-firmware ]; then
      return
  fi
  # have drivers already been installed ?
  if [ -f /lib/firmware/htc_9271.fw ]; then
      return
  fi
  apt-get -y install build-essential cmake git m4 texinfo
  if [ ! -d $INSTALL_DIR ]; then
      mkdir -p $INSTALL_DIR
  fi
  cd $INSTALL_DIR
  if [ ! -d $INSTALL_DIR/open-ath9k-htc-firmware ]; then
      git clone $ATHEROS_WIFI_REPO
      if [ ! "$?" = "0" ]; then
          rm -rf $INSTALL_DIR/open-ath9k-htc-firmware
          exit 74283
      fi
  fi
  cd $INSTALL_DIR/open-ath9k-htc-firmware
  git checkout 1.4.0
  make toolchain
  if [ ! "$?" = "0" ]; then
      rm -rf $INSTALL_DIR/open-ath9k-htc-firmware
      exit 24820
  fi
  make firmware
  if [ ! "$?" = "0" ]; then
      rm -rf $INSTALL_DIR/open-ath9k-htc-firmware
      exit 63412
  fi
  cp target_firmware/*.fw /lib/firmware/
  if [ ! "$?" = "0" ]; then
      exit 74681
  fi
  echo 'install_atheros_wifi' >> $COMPLETION_FILE
}

function configure_avahi {
  if grep -Fxq "configure_avahi" $COMPLETION_FILE; then
      return
  fi
  # only enable avahi if we're doing mesh networking
  if [[ $ENABLE_BABEL != "yes" && $ENABLE_BATMAN != "yes" && $ENABLE_CJDNS != "yes" ]]; then
      return
  fi
  apt-get -y install avahi-utils avahi-autoipd avahi-dnsconfd

  if [ $DEFAULT_DOMAIN_NAME ]; then
      sed -i "s|#host-name=.*|host-name=$DEFAULT_DOMAIN_NAME|g" /etc/avahi/avahi-daemon.conf
  else
      decarray=( 1 2 3 4 5 6 7 8 9 0 )
      PEER_ID=${decarray[$RANDOM%10]}${decarray[$RANDOM%10]}${decarray[$RANDOM%10]}${decarray[$RANDOM%10]}
      sed -i "s|#host-name=.*|host-name=mesh-$PEER_ID|g" /etc/avahi/avahi-daemon.conf
  fi

  if [ ! -d /etc/avahi/services ]; then
      mkdir -p /etc/avahi/services
  fi

  # remove an avahi service which isn't used
  if [ -f /etc/avahi/services/udisks.service ]; then
      rm /etc/avahi/services/udisks.service
  fi

  # Add an ssh service
  echo '<?xml version="1.0" standalone="no"?><!--*-nxml-*-->' > /etc/avahi/services/ssh.service
  echo '<!DOCTYPE service-group SYSTEM "avahi-service.dtd">' >> /etc/avahi/services/ssh.service
  echo '<service-group>' >> /etc/avahi/services/ssh.service
  echo '  <name replace-wildcards="yes">%h SSH</name>' >> /etc/avahi/services/ssh.service
  echo '  <service>' >> /etc/avahi/services/ssh.service
  echo '    <type>_ssh._tcp</type>' >> /etc/avahi/services/ssh.service
  echo "    <port>$SSH_PORT</port>" >> /etc/avahi/services/ssh.service
  echo '  </service>' >> /etc/avahi/services/ssh.service
  echo '</service-group>' >> /etc/avahi/services/ssh.service

  # keep the daemon running
  echo '' >> /usr/bin/$WATCHDOG_SCRIPT_NAME
  echo '# keep avahi daemon running' >> /usr/bin/$WATCHDOG_SCRIPT_NAME
  echo 'AVAHI_RUNNING=$(pgrep avahi-daemon > /dev/null && echo Running)' >> /usr/bin/$WATCHDOG_SCRIPT_NAME
  echo 'if [ ! $AVAHI_RUNNING ]; then' >> /usr/bin/$WATCHDOG_SCRIPT_NAME
  echo '  systemctl start avahi-daemon' >> /usr/bin/$WATCHDOG_SCRIPT_NAME
  echo '  echo -n $CURRENT_DATE >> $LOGFILE' >> /usr/bin/$WATCHDOG_SCRIPT_NAME
  echo '  echo " Avahi daemon restarted" >> $LOGFILE' >> /usr/bin/$WATCHDOG_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$WATCHDOG_SCRIPT_NAME

  systemctl restart avahi-daemon

  echo 'configure_avahi' >> $COMPLETION_FILE
}

function mesh_babel {
  if grep -Fxq "mesh_babel" $COMPLETION_FILE; then
      return
  fi
  if [[ $ENABLE_BABEL != "yes" ]]; then
      return
  fi
  apt-get -y install babeld

  babel_script=/var/lib/babel

  echo '#!/bin/bash' > $babel_script
  echo '' >> $babel_script
  echo 'if [[ $1 == "ls" || $1 == "list" ]]; then' >> $babel_script
  echo '    avahi-browse -atl' >> $babel_script
  echo '    exit 0' >> $babel_script
  echo 'fi' >> $babel_script
  echo '' >> $babel_script
  echo 'if [[ $1 == "start" ]]; then' >> $babel_script
  echo '    sed -i "s|#host-name=.*|host-name=$(hostname)|g" /etc/avahi/avahi-daemon.conf' >> $babel_script
  echo '    sed -i "s|host-name=.*|host-name=$(hostname)|g" /etc/avahi/avahi-daemon.conf' >> $babel_script
  echo '    sed -i "s|use-ipv4=.*|use-ipv4=yes|g" /etc/avahi/avahi-daemon.conf' >> $babel_script
  echo '    sed -i "s|use-ipv6=.*|use-ipv6=no|g" /etc/avahi/avahi-daemon.conf' >> $babel_script
  echo '    sed -i "s|hosts:.*|hosts:          files mdns4_minimal dns mdns4 mdns|g" /etc/nsswitch.conf' >> $babel_script
  echo '    systemctl restart avahi-daemon' >> $babel_script
  echo 'fi' >> $babel_script
  echo '' >> $babel_script
  echo "IFACE=$WIFI_INTERFACE" >> $babel_script
  echo 'if [[ $IFACE == "wlan0" ]]; then' >> $babel_script
  echo '    if grep -q "wlan1" /proc/net/dev; then' >> $babel_script
  echo '        IFACE=wlan1' >> $babel_script
  echo '    fi' >> $babel_script
  echo 'fi' >> $babel_script
  echo 'if [[ $IFACE == "wlan0" ]]; then' >> $babel_script
  echo '    if grep -q "wlan2" /proc/net/dev; then' >> $babel_script
  echo '        IFACE=wlan2' >> $babel_script
  echo '    fi' >> $babel_script
  echo 'fi' >> $babel_script
  echo 'if [[ $IFACE == "wlan0" ]]; then' >> $babel_script
  echo '    if grep -q "wlan3" /proc/net/dev; then' >> $babel_script
  echo '        IFACE=wlan3' >> $babel_script
  echo '    fi' >> $babel_script
  echo 'fi' >> $babel_script
  echo '' >> $babel_script
  echo 'if [[ ! grep -q "$IFACE" /proc/net/dev || $1 == "stop" ]]; then' >> $babel_script
  echo '    if ! grep -q "$IFACE" /proc/net/dev; then' >> $babel_script
  echo '        echo "Interface $IFACE was not found"' >> $babel_script
  echo '    else' >> $babel_script
  echo '        echo "Stopping"' >> $babel_script
  echo '    fi' >> $babel_script
  echo '    ifconfig $IFACE down' >> $babel_script
  echo '    pkill babeld' >> $babel_script
  echo '    systemctl restart network-manager' >> $babel_script
  echo '    exit 1' >> $babel_script
  echo 'fi' >> $babel_script
  echo '' >> $babel_script
  echo 'systemctl stop network-manager' >> $babel_script
  echo 'ifconfig $IFACE down' >> $babel_script
  echo -n 'iwconfig $IFACE mode ad-hoc channel ' >> $babel_script
  echo "$WIFI_CHANNEL essid \"$ESSID\"" >> $babel_script
  echo 'ifconfig $IFACE up' >> $babel_script
  echo -n 'ifconfig $IFACE:avahi ' >> $babel_script
  echo -n "$LOCAL_NETWORK_STATIC_IP_ADDRESS netmask " >> $babel_script
  echo '255.255.255.0 broadcast 192.168.13.255' >> $babel_script
  echo -n 'babeld -D $IFACE:avahi -p ' >> $babel_script
  echo -n "$BABEL_PORT -d 5 " >> $babel_script
  echo '$IFACE' >> $babel_script
  echo 'exit 0' >> $babel_script
  chmod +x $babel_script

  echo '[Unit]' > /etc/systemd/system/babel.service
  echo 'Description=Babel Mesh' >> /etc/systemd/system/babel.service
  echo '' >> /etc/systemd/system/babel.service
  echo '[Service]' >> /etc/systemd/system/babel.service
  echo 'Type=oneshot' >> /etc/systemd/system/babel.service
  echo "ExecStart=$babel_script start" >> /etc/systemd/system/babel.service
  echo "ExecStop=$babel_script stop" >> /etc/systemd/system/babel.service
  echo 'RemainAfterExit=yes' >> /etc/systemd/system/babel.service
  echo '' >> /etc/systemd/system/babel.service
  echo '# Allow time for the server to start/stop' >> /etc/systemd/system/babel.service
  echo 'TimeoutSec=300' >> /etc/systemd/system/babel.service
  echo '' >> /etc/systemd/system/babel.service
  echo '[Install]' >> /etc/systemd/system/babel.service
  echo 'WantedBy=multi-user.target' >> /etc/systemd/system/babel.service
  systemctl enable babel

  echo 'mesh_babel' >> $COMPLETION_FILE
}

function mesh_batman_bridge {
  # https://sudoroom.org/wiki/Mesh/Relay_setup
  # also see http://www.netlore.co.uk/airmesh/
  # https://www.youtube.com/watch?v=CLKHWfQlFqQ
  # http://pastebin.com/4U9vdFFm
  # http://pastebin.com/eeTmL5XL
  if grep -Fxq "mesh_batman_bridge" $COMPLETION_FILE; then
      return
  fi
  if [[ $ENABLE_BATMAN != "yes" ]]; then
      return
  fi

  apt-get -y install iproute bridge-utils libnetfilter-conntrack3 batctl
  apt-get -y install python-dev libevent-dev ebtables python-pip git
  apt-get -y install wireless-tools rfkill

  #install_vpn_tunnel

  modprobe batman-adv
  [ $? -ne 0 ] && echo "B.A.T.M.A.N module not available" && exit 76482
  if ! grep -q "batman_adv" /etc/modules; then
      echo 'batman_adv' >> /etc/modules
  fi

  batman_script=/var/lib/batman

  echo '#!/bin/bash' > $batman_script
  echo '' >> $batman_script
  echo 'if [[ $1 == "start" ]]; then' >> $batman_script
  echo '    # install avahi' >> $batman_script
  echo '    sed -i "s|#host-name=.*|host-name=$(hostname)|g" /etc/avahi/avahi-daemon.conf' >> $batman_script
  echo '    sed -i "s|host-name=.*|host-name=$(hostname)|g" /etc/avahi/avahi-daemon.conf' >> $batman_script
  echo '    sed -i "s|use-ipv4=.*|use-ipv4=yes|g" /etc/avahi/avahi-daemon.conf' >> $batman_script
  echo '    sed -i "s|use-ipv6=.*|use-ipv6=no|g" /etc/avahi/avahi-daemon.conf' >> $batman_script
  echo '    sed -i "s|#disallow-other-stacks=.*|disallow-other-stacks=yes|g" /etc/avahi/avahi-daemon.conf' >> $batman_script
  echo '    sed -i "s|hosts:.*|hosts:          files mdns4_minimal dns mdns4 mdns|g" /etc/nsswitch.conf' >> $batman_script
  echo 'fi' >> $batman_script
  echo '' >> $batman_script
  echo '# Mesh definition' >> $batman_script
  echo "ESSID=$ESSID" >> $batman_script
  echo "CELLID=$BATMAN_CELLID" >> $batman_script
  echo "CHANNEL=$WIFI_CHANNEL" >> $batman_script
  echo '' >> $batman_script
  echo '# Ethernet bridge definition (bridged to bat0)' >> $batman_script
  echo 'BRIDGE=br-mesh' >> $batman_script
  echo "IFACE=$WIFI_INTERFACE" >> $batman_script
  echo 'EIFACE=eth0' >> $batman_script
  echo '' >> $batman_script
  echo 'if [[ $IFACE == "wlan0" ]]; then' >> $batman_script
  echo '    if grep -q "wlan1" /proc/net/dev; then' >> $batman_script
  echo '        IFACE=wlan1' >> $batman_script
  echo '    fi' >> $batman_script
  echo 'fi' >> $batman_script
  echo 'if [[ $IFACE == "wlan0" ]]; then' >> $batman_script
  echo '    if grep -q "wlan2" /proc/net/dev; then' >> $batman_script
  echo '        IFACE=wlan2' >> $batman_script
  echo '    fi' >> $batman_script
  echo 'fi' >> $batman_script
  echo 'if [[ $IFACE == "wlan0" ]]; then' >> $batman_script
  echo '    if grep -q "wlan3" /proc/net/dev; then' >> $batman_script
  echo '        IFACE=wlan3' >> $batman_script
  echo '    fi' >> $batman_script
  echo 'fi' >> $batman_script
  echo '' >> $batman_script
  echo 'if [ -e /etc/default/batctl ]; then' >> $batman_script
  echo '    . /etc/default/batctl' >> $batman_script
  echo 'fi' >> $batman_script
  echo '' >> $batman_script
  echo 'start() {' >> $batman_script
  echo '    if [ -z "$IFACE" ] ; then' >> $batman_script
  echo '        echo "error: unable to find wifi interface, not enabling batman-adv mesh"' >> $batman_script
  echo '        return' >> $batman_script
  echo '    fi' >> $batman_script
  echo '    echo "info: enabling batman-adv mesh network $ESSID on $IFACE"' >> $batman_script

  echo '    systemctl stop network-manager' >> $batman_script
  echo '    sleep 5' >> $batman_script
  echo '' >> $batman_script
  echo "    # remove an avahi service which isn't used" >> $batman_script
  echo '    if [ -f /etc/avahi/services/udisks.service ]; then' >> $batman_script
  echo '        sudo rm /etc/avahi/services/udisks.service' >> $batman_script
  echo '    fi' >> $batman_script
  echo '' >> $batman_script
  echo '    # Might have to re-enable wifi' >> $batman_script
  echo '    rfkill unblock $(rfkill list|awk -F: "/phy/ {print $1}") || true' >> $batman_script
  echo '' >> $batman_script
  echo '    ifconfig $IFACE down' >> $batman_script
  echo '    ifconfig $IFACE mtu 1532' >> $batman_script
  echo '    iwconfig $IFACE enc off' >> $batman_script
  echo '    iwconfig $IFACE mode ad-hoc essid $ESSID channel $CHANNEL' >> $batman_script
  echo '    sleep 1' >> $batman_script
  echo '    iwconfig $IFACE ap $CELLID' >> $batman_script
  echo '' >> $batman_script
  echo '    modprobe batman-adv' >> $batman_script
  echo '    batctl if add $IFACE' >> $batman_script
  echo '    ifconfig $IFACE up' >> $batman_script
  echo '    avahi-autoipd --force-bind --daemonize --wait $BRIDGE' >> $batman_script
  echo '    avahi-autoipd --force-bind --daemonize --wait $IFACE' >> $batman_script
  echo '    ifconfig bat0 up promisc' >> $batman_script
  echo '' >> $batman_script
  echo '    #Use persistent HWAddr' >> $batman_script
  echo '    ether_new=$(ifconfig eth0 | grep HWaddr | sed -e "s/.*HWaddr //")' >> $batman_script
  echo '    if [ ! -f /var/lib/mesh-node/bat0 ]; then' >> $batman_script
  echo '        mkdir /var/lib/mesh-node' >> $batman_script
  echo '        echo "${ether_new}" > /var/lib/mesh-node/bat0' >> $batman_script
  echo '    else' >> $batman_script
  echo '        ether=$(cat /var/lib/mesh-node/bat0)' >> $batman_script
  echo '        ifconfig bat0 hw ether ${ether}' >> $batman_script
  echo '    fi' >> $batman_script
  echo '' >> $batman_script
  echo '    if [ "$EIFACE" ] ; then' >> $batman_script
  echo '        brctl addbr $BRIDGE' >> $batman_script
  echo '        brctl addif $BRIDGE bat0' >> $batman_script
  echo '        brctl addif $BRIDGE $EIFACE' >> $batman_script
  echo '        ifconfig bat0 0.0.0.0' >> $batman_script
  echo '        ifconfig $EIFACE 0.0.0.0' >> $batman_script
  echo '        ifconfig $EIFACE up promisc' >> $batman_script
  echo '        ifconfig $BRIDGE up' >> $batman_script
  echo '    fi' >> $batman_script
  echo '' >> $batman_script
  echo '    iptables -A INPUT -p tcp --dport 548 -j ACCEPT' >> $batman_script
  echo '    iptables -A INPUT -p udp --dport 548 -j ACCEPT' >> $batman_script
  echo '    iptables -A INPUT -p tcp --dport 5353 -j ACCEPT' >> $batman_script
  echo '    iptables -A INPUT -p udp --dport 5353 -j ACCEPT' >> $batman_script
  echo '    iptables -A INPUT -p tcp --dport 5354 -j ACCEPT' >> $batman_script
  echo '    iptables -A INPUT -p udp --dport 5354 -j ACCEPT' >> $batman_script
  echo "    iptables -A INPUT -p tcp --dport $ZERONET_PORT -j ACCEPT" >> $batman_script
  echo "    iptables -A INPUT -p udp --dport $ZERONET_PORT -j ACCEPT" >> $batman_script
  echo "    iptables -A INPUT -p tcp --dport $IPFS_PORT -j ACCEPT" >> $batman_script
  echo '' >> $batman_script
  echo '    systemctl restart avahi-daemon' >> $batman_script
  echo '}' >> $batman_script
  echo '' >> $batman_script
  echo 'stop() {' >> $batman_script
  echo '    if [ -z "$IFACE" ]; then' >> $batman_script
  echo '        echo "error: unable to find wifi interface, not enabling batman-adv mesh"' >> $batman_script
  echo '        return' >> $batman_script
  echo '    fi' >> $batman_script
  echo '    if [ "$EIFACE" ]; then' >> $batman_script
  echo '        brctl delif $BRIDGE bat0' >> $batman_script
  echo '        brctl delif $BRIDGE $EIFACE' >> $batman_script
  echo '        ifconfig $BRIDGE down || true' >> $batman_script
  echo '        brctl delbr $BRIDGE' >> $batman_script
  echo '        ifconfig $EIFACE down -promisc' >> $batman_script
  echo '    fi' >> $batman_script
  echo '' >> $batman_script
  echo '    avahi-autoipd -k $BRIDGE' >> $batman_script
  echo '    avahi-autoipd -k $IFACE' >> $batman_script
  echo '    ifconfig bat0 down -promisc' >> $batman_script
  echo '' >> $batman_script
  echo '    batctl if del $IFACE' >> $batman_script
  echo '    rmmod batman-adv' >> $batman_script
  echo '    ifconfig $IFACE mtu 1500' >> $batman_script
  echo '    ifconfig $IFACE down' >> $batman_script
  echo '    iwconfig $IFACE mode managed' >> $batman_script
  echo '' >> $batman_script
  echo '    iptables -D INPUT -p tcp --dport 548 -j ACCEPT' >> $batman_script
  echo '    iptables -D INPUT -p udp --dport 548 -j ACCEPT' >> $batman_script
  echo '    iptables -D INPUT -p tcp --dport 5353 -j ACCEPT' >> $batman_script
  echo '    iptables -D INPUT -p udp --dport 5353 -j ACCEPT' >> $batman_script
  echo '    iptables -D INPUT -p tcp --dport 5354 -j ACCEPT' >> $batman_script
  echo '    iptables -D INPUT -p udp --dport 5354 -j ACCEPT' >> $batman_script
  echo "    iptables -D INPUT -p tcp --dport $ZERONET_PORT -j ACCEPT" >> $batman_script
  echo "    iptables -D INPUT -p udp --dport $ZERONET_PORT -j ACCEPT" >> $batman_script
  echo "    iptables -D INPUT -p tcp --dport $IPFS_PORT -j ACCEPT" >> $batman_script
  echo '' >> $batman_script
  echo '    systemctl restart network-manager' >> $batman_script
  echo '}' >> $batman_script
  echo '' >> $batman_script
  echo 'if ! grep -q "$IFACE" /proc/net/dev; then' >> $batman_script
  echo '    echo "Interface $IFACE was not found"' >> $batman_script
  echo '    stop' >> $batman_script
  echo '    exit 1' >> $batman_script
  echo 'fi' >> $batman_script
  echo '' >> $batman_script
  echo 'case "$1" in' >> $batman_script
  echo '    start|stop)' >> $batman_script
  echo '        $1' >> $batman_script
  echo '        ;;' >> $batman_script
  echo '    restart)' >> $batman_script
  echo '        stop' >> $batman_script
  echo '        sleep 10' >> $batman_script
  echo '        start' >> $batman_script
  echo '        ;;' >> $batman_script
  echo '    status)' >> $batman_script
  echo '        batctl o' >> $batman_script
  echo '        ;;' >> $batman_script
  echo '    ping)' >> $batman_script
  echo '        batctl ping $2' >> $batman_script
  echo '        ;;' >> $batman_script
  echo '    ls|list)' >> $batman_script
  echo '        avahi-browse -atl' >> $batman_script
  echo '        ;;' >> $batman_script
  echo '    *)' >> $batman_script
  echo '    echo "error: invalid parameter $1"' >> $batman_script
  echo '    echo "usage: $0 {start|stop|restart|status|ping|ls|list}"' >> $batman_script
  echo '    exit 2' >> $batman_script
  echo '    ;;' >> $batman_script
  echo 'esac' >> $batman_script
  echo 'exit 0' >> $batman_script
  chmod +x $batman_script

  echo '[Unit]' > /etc/systemd/system/batman.service
  echo 'Description=B.A.T.M.A.N. Advanced' >> /etc/systemd/system/batman.service
  echo '' >> /etc/systemd/system/batman.service
  echo '[Service]' >> /etc/systemd/system/batman.service
  echo 'Type=oneshot' >> /etc/systemd/system/batman.service
  echo "ExecStart=$batman_script start" >> /etc/systemd/system/batman.service
  echo "ExecStop=$batman_script stop" >> /etc/systemd/system/batman.service
  echo 'RemainAfterExit=yes' >> /etc/systemd/system/batman.service
  echo '' >> /etc/systemd/system/batman.service
  echo '# Allow time for the server to start/stop' >> /etc/systemd/system/batman.service
  echo 'TimeoutSec=300' >> /etc/systemd/system/batman.service
  echo '' >> /etc/systemd/system/batman.service
  echo '[Install]' >> /etc/systemd/system/batman.service
  echo 'WantedBy=multi-user.target' >> /etc/systemd/system/batman.service
  systemctl enable batman

  if ! grep -q "Mesh Networking (B.A.T.M.A.N)" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Mesh Networking (B.A.T.M.A.N)' >> /home/$MY_USERNAME/README
      echo '=============================' >> /home/$MY_USERNAME/README
      echo "Mesh ESSID: $ESSID" >> /home/$MY_USERNAME/README
      echo "Mesh cell ID: $BATMAN_CELLID" >> /home/$MY_USERNAME/README
      echo "Mesh wifi channel: $WIFI_CHANNEL" >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
      chmod 600 /home/$MY_USERNAME/README
  fi

  echo 'mesh_batman_bridge' >> $COMPLETION_FILE
}

function remove_instructions_from_motd {
    sed -i '/## /d' /etc/motd
}

function check_hwrng {
  if [[ $HWRNG_TYPE == "beaglebone" ]]; then
      # If hardware random number generation was enabled then make sure that the device exists.
      # if /dev/hwrng is not found then any subsequent cryptographic key generation would
      # suffer from low entropy and might be insecure
      if [ ! -e /dev/hwrng ]; then
          ls /dev/hw*
          echo 'The hardware random number generator is enabled but could not be detected on'
          echo '/dev/hwrng.  There may be a problem with the installation or the Beaglebone hardware.'
          exit 75
      fi
  fi

  # If a OneRNG device was installed then verify its firmware
  #check_onerng_verification
}

function get_mariadb_password {
  if [ -f /home/$MY_USERNAME/README ]; then
      if grep -q "MariaDB password" /home/$MY_USERNAME/README; then
          if [ -f $DATABASE_PASSWORD_FILE ]; then
              MARIADB_PASSWORD=$(cat $DATABASE_PASSWORD_FILE)
          else
              MARIADB_PASSWORD=$(cat /home/$MY_USERNAME/README | grep "MariaDB password" | awk -F ':' '{print $2}' | sed 's/^ *//')
              echo "$MARIADB_PASSWORD" > $DATABASE_PASSWORD_FILE
              chmod 600 $DATABASE_PASSWORD_FILE
          fi
      fi
  fi
}

function get_mariadb_gnusocial_admin_password {
  if [ -f /home/$MY_USERNAME/README ]; then
      if grep -q "MariaDB gnusocial admin password" /home/$MY_USERNAME/README; then
          MICROBLOG_ADMIN_PASSWORD=$(cat /home/$MY_USERNAME/README | grep "MariaDB gnusocial admin password" | awk -F ':' '{print $2}' | sed 's/^ *//')
      fi
  fi
}

function get_mariadb_git_admin_password {
  if [ -f /home/$MY_USERNAME/README ]; then
      if grep -q "Gogs admin user password" /home/$MY_USERNAME/README; then
          GIT_ADMIN_PASSWORD=$(cat /home/$MY_USERNAME/README | grep "Gogs admin user password" | awk -F ':' '{print $2}' | sed 's/^ *//')
      fi
  fi
}

function get_mariadb_hubzilla_admin_password {
  if [ -f /home/$MY_USERNAME/README ]; then
      if grep -q "MariaDB Hubzilla admin password" /home/$MY_USERNAME/README; then
          HUBZILLA_ADMIN_PASSWORD=$(cat /home/$MY_USERNAME/README | grep "MariaDB Hubzilla admin password" | awk -F ':' '{print $2}' | sed 's/^ *//')
      fi
  fi
}

function get_mariadb_owncloud_admin_password {
  if [ -f /home/$MY_USERNAME/README ]; then
      if grep -q "Owncloud database password" /home/$MY_USERNAME/README; then
          OWNCLOUD_ADMIN_PASSWORD=$(cat /home/$MY_USERNAME/README | grep "Owncloud database password" | awk -F ':' '{print $2}' | sed 's/^ *//')
      fi
  fi
}

function create_freedns_updater {
  # currently inadyn doesn't work as expected with freeDNS, so this is a workaround
  if grep -Fxq "create_freedns_updater" $COMPLETION_FILE; then
      return
  fi
  if [[ $DDNS_PROVIDER != "default@freedns.afraid.org" ]]; then
      return
  fi
  if [[ $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi

  FREEDNS_WGET='wget -q --read-timeout=0.0 --waitretry=5 --tries=4 https://freedns.afraid.org/dynamic/update.php?'

  echo '#!/bin/bash' > /usr/bin/dynamicdns
  echo 'cd /tmp' >> /usr/bin/dynamicdns
  if [ $DEFAULT_DOMAIN_CODE ]; then
      echo "# $DEFAULT_DOMAIN_NAME" >> /usr/bin/dynamicdns
      echo "$FREEDNS_WGET$DEFAULT_DOMAIN_CODE=" >> /usr/bin/dynamicdns
  fi
  if [ $WIKI_CODE ]; then
      if [[ $WIKI_CODE != "$DEFAULT_DOMAIN_CODE" ]]; then
          echo "# $WIKI_DOMAIN_NAME" >> /usr/bin/dynamicdns
          echo "$FREEDNS_WGET$WIKI_CODE=" >> /usr/bin/dynamicdns
      fi
  fi
  if [ $FULLBLOG_CODE ]; then
      if [[ $FULLBLOG_CODE != "$DEFAULT_DOMAIN_CODE" ]]; then
          echo "# $FULLBLOG_DOMAIN_NAME" >> /usr/bin/dynamicdns
          echo "$FREEDNS_WGET$FULLBLOG_CODE=" >> /usr/bin/dynamicdns
      fi
  fi
  if [ $HUBZILLA_CODE ]; then
      if [[ $HUBZILLA_CODE != "$DEFAULT_DOMAIN_CODE" ]]; then
          echo "# $HUBZILLA_DOMAIN_NAME" >> /usr/bin/dynamicdns
          echo "$FREEDNS_WGET$HUBZILLA_CODE=" >> /usr/bin/dynamicdns
      fi
  fi
  if [ $OWNCLOUD_CODE ]; then
      if [[ $OWNCLOUD_CODE != "$DEFAULT_DOMAIN_CODE" ]]; then
          echo "# $OWNCLOUD_DOMAIN_NAME" >> /usr/bin/dynamicdns
          echo "$FREEDNS_WGET$OWNCLOUD_CODE=" >> /usr/bin/dynamicdns
      fi
  fi
  if [ $MICROBLOG_CODE ]; then
      if [[ $MICROBLOG_CODE != "$DEFAULT_DOMAIN_CODE" ]]; then
          echo "# $MICROBLOG_DOMAIN_NAME" >> /usr/bin/dynamicdns
          echo "$FREEDNS_WGET$MICROBLOG_CODE=" >> /usr/bin/dynamicdns
      fi
  fi
  if [ $GIT_CODE ]; then
      if [[ $GIT_CODE != "$DEFAULT_DOMAIN_CODE" ]]; then
          echo "# $GIT_DOMAIN_NAME" >> /usr/bin/dynamicdns
          echo "$FREEDNS_WGET$GIT_CODE=" >> /usr/bin/dynamicdns
      fi
  fi
  if [ $MEDIAGOBLIN_CODE ]; then
      if [[ $MEDIAGOBLIN_CODE != "$DEFAULT_DOMAIN_CODE" ]]; then
          echo "# $MEDIAGOBLIN_DOMAIN_NAME" >> /usr/bin/dynamicdns
          echo "$FREEDNS_WGET$MEDIAGOBLIN_CODE=" >> /usr/bin/dynamicdns
      fi
  fi
  echo 'exit 0' >> /usr/bin/dynamicdns
  chmod 600 /usr/bin/dynamicdns
  chmod +x /usr/bin/dynamicdns

  if ! grep -q "/usr/bin/dynamicdns" /etc/crontab; then
      echo '*/3            * *   *   *   root /usr/bin/dynamicdns' >> /etc/crontab
      service cron restart
  fi

  echo 'create_freedns_updater' >> $COMPLETION_FILE
}

function backup_to_friends_servers {
  if grep -Fxq "backup_to_friends_servers" $COMPLETION_FILE; then
      return
  fi

  # update crontab
  echo '#!/bin/bash' > /etc/cron.daily/backuptofriends
  echo "/usr/bin/${PROJECT_NAME}-backup-remote" >> /etc/cron.daily/backuptofriends
  chmod +x /etc/cron.daily/backuptofriends

  echo 'backup_to_friends_servers' >> $COMPLETION_FILE
}

function remove_default_user {
  # make sure you don't use the default user account
  if [[ $MY_USERNAME == "debian" ]]; then
      echo 'Do not use the default debian user account. Create a different user with: adduser [username]'
      exit 68
  fi
  # remove the default debian user to prevent it from becoming an attack vector
  if [ -d /home/debian ]; then
      userdel -r debian
      echo 'Default debian user account removed'
  fi
}

function enforce_good_passwords {
  # because humans are generally bad at choosing passwords
  if grep -Fxq "enforce_good_passwords" $COMPLETION_FILE; then
      return
  fi
  apt-get -y install libpam-cracklib

  sed -i 's/password.*requisite.*pam_cracklib.so.*/password        required                       pam_cracklib.so retry=2 dcredit=-4 ucredit=-1 ocredit=-1 lcredit=0 minlen=10 reject_username/g' /etc/pam.d/common-password
  echo 'enforce_good_passwords' >> $COMPLETION_FILE
}

function change_login_message {
  if grep -Fxq "change_login_message" $COMPLETION_FILE; then
      return
  fi

  # remove automatic motd creator if it exists
  if [ -f /etc/init.d/motd ]; then
      rm -f /etc/init.d/motd
  fi

  echo '' > /etc/motd
  echo ".---.                  .              .                   " >> /etc/motd
  echo "|                      |              |                   " >> /etc/motd
  echo "|--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-. " >> /etc/motd
  echo "|    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-' " >> /etc/motd
  echo "'    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'" >> /etc/motd

  if [[ $SYSTEM_TYPE == "$VARIANT_MAILBOX" ]]; then
      echo '               M A I L B O X   E D I T I O N' >> /etc/motd
  fi

  if [[ $SYSTEM_TYPE == "$VARIANT_SOCIAL" ]]; then
      echo '                 S O C I A L   E D I T I O N' >> /etc/motd
  fi

  if [[ $SYSTEM_TYPE == "$VARIANT_CHAT" ]]; then
      echo '                  C H A T   E D I T I O N' >> /etc/motd
  fi

  if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" ]]; then
      echo '                  C L O U D   E D I T I O N' >> /etc/motd
  fi

  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" ]]; then
      echo '                 W R I T E R   E D I T I O N ' >> /etc/motd
  fi

  if [[ $SYSTEM_TYPE == "$VARIANT_MEDIA" ]]; then
      echo '                  M E D I A   E D I T I O N' >> /etc/motd
  fi

  if [[ $SYSTEM_TYPE == "$VARIANT_DEVELOPER" ]]; then
      echo '             D E V E L O P E R   E D I T I O N' >> /etc/motd
  fi

  echo '' >> /etc/motd
  if [[ $SYSTEM_TYPE != "$VARIANT_MESH" ]]; then
      echo '                  Freedom in the Cloud' >> /etc/motd
  else
      echo '                   Freedom in the Mesh' >> /etc/motd
  fi
  echo '' >> /etc/motd
  echo 'change_login_message' >> $COMPLETION_FILE
}

function search_for_attached_usb_drive {
  # If a USB drive is attached then search for email,
  # gpg, ssh keys and emacs configuration
  if grep -Fxq "search_for_attached_usb_drive" $COMPLETION_FILE; then
      return
  fi
  if [ -b $USB_DRIVE ]; then
      if [ ! -d $USB_MOUNT ]; then
          echo 'Mounting USB drive'
          mkdir $USB_MOUNT
          mount $USB_DRIVE $USB_MOUNT
      fi
      if ! [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_DEVELOPER" || $SYSTEM_TYPE == "$VARIANT_MESH" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" ]]; then
          if [ -d $USB_MOUNT/Maildir ]; then
              echo 'Maildir found on USB drive'
              IMPORT_MAILDIR=$USB_MOUNT/Maildir
          fi
          if [ -d $USB_MOUNT/.gnupg ]; then
              echo 'Importing GPG keyring'
              cp -r $USB_MOUNT/.gnupg /home/$MY_USERNAME
              chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.gnupg
              GPG_KEYS_IMPORTED="yes"
              if [ ! -f /home/$MY_USERNAME/.gnupg/secring.gpg ]; then
                  echo 'GPG files did not copy'
                  exit 73529
              fi
          fi

          if [ -f $USB_MOUNT/.procmailrc ]; then
              echo 'Importing procmail settings'
              cp $USB_MOUNT/.procmailrc /home/$MY_USERNAME
              chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.procmailrc
          fi

          if [ -f $USB_MOUNT/private_key.gpg ]; then
              echo 'GPG private key found on USB drive'
              MY_GPG_PRIVATE_KEY=$USB_MOUNT/private_key.gpg
          fi
          if [ -f $USB_MOUNT/public_key.gpg ]; then
              echo 'GPG public key found on USB drive'
              MY_GPG_PUBLIC_KEY=$USB_MOUNT/public_key.gpg
          fi
      fi
      if [ -d $USB_MOUNT/prosody ]; then
          if [ ! -d $XMPP_DIRECTORY ]; then
              mkdir $XMPP_DIRECTORY
          fi
          cp -r $USB_MOUNT/prosody/* $XMPP_DIRECTORY
          chown -R prosody:prosody $XMPP_DIRECTORY
      fi
      if [ -d $USB_MOUNT/.ssh ]; then
          echo 'Importing ssh keys'
          cp -r $USB_MOUNT/.ssh /home/$MY_USERNAME
          chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.ssh
          # for security delete the ssh keys from the usb drive
          if [ ! -f /home/$MY_USERNAME/.ssh/id_rsa ]; then
              echo 'ssh files did not copy'
              exit 8
          fi
      fi
      if [ -f $USB_MOUNT/.emacs ]; then
          echo 'Importing .emacs file'
          cp -f $USB_MOUNT/.emacs /home/$MY_USERNAME/.emacs
          chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.emacs
      fi
      if [ -d $USB_MOUNT/.emacs.d ]; then
          echo 'Importing .emacs.d directory'
          cp -r $USB_MOUNT/.emacs.d /home/$MY_USERNAME
          chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.emacs.d
      fi
      if [ -d $USB_MOUNT/ssl ]; then
          echo 'Importing SSL certificates'
          cp -r $USB_MOUNT/ssl/* /etc/ssl
          chmod 640 /etc/ssl/certs/*
          chmod 400 /etc/ssl/private/*
          # change ownership of some certificates
          if [ -d /etc/prosody ]; then
              chown prosody:prosody /etc/ssl/private/xmpp.*
              chown prosody:prosody /etc/ssl/certs/xmpp.*
          fi
          if [ -d /etc/dovecot ]; then
              chown root:dovecot /etc/ssl/certs/dovecot.*
              chown root:dovecot /etc/ssl/private/dovecot.*
          fi
          if [ -f /etc/ssl/private/exim.key ]; then
              chown root:Debian-exim /etc/ssl/private/exim.key /etc/ssl/certs/exim.crt /etc/ssl/certs/exim.dhparam
          fi
      fi
      if [ -d $USB_MOUNT/personal ]; then
          echo 'Importing personal directory'
          cp -r $USB_MOUNT/personal /home/$MY_USERNAME
          chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/personal
      fi
  else
      if [ -d $USB_MOUNT ]; then
          umount $USB_MOUNT
          rm -rf $USB_MOUNT
      fi
      echo 'No USB drive attached'
  fi
  echo 'search_for_attached_usb_drive' >> $COMPLETION_FILE
}

function remove_proprietary_repos {
  if grep -Fxq "remove_proprietary_repos" $COMPLETION_FILE; then
      return
  fi
  sed -i 's/ non-free//g' /etc/apt/sources.list
  echo 'remove_proprietary_repos' >> $COMPLETION_FILE
}

function change_debian_repos {
  if grep -Fxq "change_debian_repos" $COMPLETION_FILE; then
      return
  fi
  rm -rf /var/lib/apt/lists/*
  apt-get clean
  sed -i "s/ftp.us.debian.org/$DEBIAN_REPO/g" /etc/apt/sources.list

  # ensure that there is a security repo
  if ! grep -q "security" /etc/apt/sources.list; then
      echo "deb http://security.debian.org/ $DEBIAN_VERSION/updates main contrib" >> /etc/apt/sources.list
      echo "#deb-src http://security.debian.org/ $DEBIAN_VERSION/updates main contrib" >> /etc/apt/sources.list
  fi

  apt-get update
  apt-get -y install apt-transport-https
  echo 'change_debian_repos' >> $COMPLETION_FILE
}

function initial_setup {
  if grep -Fxq "initial_setup" $COMPLETION_FILE; then
      return
  fi

  apt-get -y remove --purge apache*
  apt-get -y dist-upgrade
  apt-get -y install ca-certificates emacs24 cpulimit
  apt-get -y install cryptsetup libgfshare-bin obnam sshpass

  echo 'initial_setup' >> $COMPLETION_FILE
}

function install_editor {
  if grep -Fxq "install_editor" $COMPLETION_FILE; then
      return
  fi
  update-alternatives --set editor /usr/bin/emacs24

  # A minimal emacs configuration
  #echo -n "(add-to-list 'load-path " > /home/$MY_USERNAME/.emacs
  #echo '"~/.emacs.d/")' >> /home/$MY_USERNAME/.emacs
  #echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Remove trailing whitepace ======================================' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ";;(add-hook 'before-save-hook 'delete-trailing-whitespace)" >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; Goto a line number with CTRL-l' >> /home/$MY_USERNAME/.emacs
  echo -n '(global-set-key "\C-l" ' >> /home/$MY_USERNAME/.emacs
  echo "'goto-line)" >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Show line numbers ==============================================' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo "(add-hook 'find-file-hook (lambda () (linum-mode 1)))" >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Enable line wrapping in org-mode ===============================' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo " (add-hook 'org-mode-hook" >> /home/$MY_USERNAME/.emacs
  echo "           '(lambda ()" >> /home/$MY_USERNAME/.emacs
  echo "              (visual-line-mode 1)))" >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Enable shift select in org mode ================================' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo '(setq org-support-shift-select t)' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Set standard indent to 4 rather that 4 =========================' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo '(setq standard-indent 4)' >> /home/$MY_USERNAME/.emacs
  echo '(setq-default tab-width 4)' >> /home/$MY_USERNAME/.emacs
  echo '(setq c-basic-offset 4)' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Support Wheel Mouse Scrolling ==================================' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo '(mouse-wheel-mode t)' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Place Backup Files in Specific Directory =======================' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo '(setq make-backup-files t)' >> /home/$MY_USERNAME/.emacs
  echo '(setq version-control t)' >> /home/$MY_USERNAME/.emacs
  echo '(setq backup-directory-alist (quote ((".*" . "~/.emacs_backups/"))))' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Make Text mode the default mode for new buffers ================' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo "(setq default-major-mode 'text-mode)" >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Line length ====================================================' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo '(setq-default fill-column 72)' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Enable Line and Column Numbering ===============================' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo '(line-number-mode 1)' >> /home/$MY_USERNAME/.emacs
  echo '(column-number-mode 1)' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Turn on Auto Fill mode automatically in all modes ==============' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; Auto-fill-mode the the automatic wrapping of lines and insertion of' >> /home/$MY_USERNAME/.emacs
  echo ';; newlines when the cursor goes over the column limit.' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; This should actually turn on auto-fill-mode by default in all major' >> /home/$MY_USERNAME/.emacs
  echo ';; modes. The other way to do this is to turn on the fill for specific modes' >> /home/$MY_USERNAME/.emacs
  echo ';; via hooks.' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo '(setq auto-fill-mode 1)' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Enable GPG encryption =========================================' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo "(require 'epa)" >> /home/$MY_USERNAME/.emacs
  echo '(epa-file-enable)' >> /home/$MY_USERNAME/.emacs
  cp /home/$MY_USERNAME/.emacs /root/.emacs
  chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.emacs

  echo 'install_editor' >> $COMPLETION_FILE
}

function enable_backports {
  if grep -Fxq "enable_backports" $COMPLETION_FILE; then
      return
  fi
  if ! grep -Fxq "deb http://$DEBIAN_REPO/debian $DEBIAN_VERSION-backports main" /etc/apt/sources.list; then
    echo "deb http://$DEBIAN_REPO/debian $DEBIAN_VERSION-backports main" >> /etc/apt/sources.list
  fi
  echo 'enable_backports' >> $COMPLETION_FILE
}

function enable_zram {
  if grep -Fxq "enable_zram" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" || $INSTALLING_ON_BBB != "yes" ]]; then
      return
  fi
  if ! grep -q "options zram num_devices=1" /etc/modprobe.d/zram.conf; then
      echo 'options zram num_devices=1' >> /etc/modprobe.d/zram.conf
  fi
  echo '#!/bin/bash' > /etc/init.d/zram
  echo '### BEGIN INIT INFO' >> /etc/init.d/zram
  echo '# Provides: zram' >> /etc/init.d/zram
  echo '# Required-Start:' >> /etc/init.d/zram
  echo '# Required-Stop:' >> /etc/init.d/zram
  echo '# Default-Start: 2 3 4 5' >> /etc/init.d/zram
  echo '# Default-Stop: 0 1 6' >> /etc/init.d/zram
  echo '# Short-Description: Increased Performance In Linux With zRam (Virtual Swap Compressed in RAM)' >> /etc/init.d/zram
  echo '# Description: Adapted from systemd scripts at https://github.com/mystilleef/FedoraZram' >> /etc/init.d/zram
  echo '### END INIT INFO' >> /etc/init.d/zram
  echo 'start() {' >> /etc/init.d/zram
  echo '    # get the number of CPUs' >> /etc/init.d/zram
  echo '    num_cpus=$(grep -c processor /proc/cpuinfo)' >> /etc/init.d/zram
  echo '    # if something goes wrong, assume we have 1' >> /etc/init.d/zram
  echo '    [ "$num_cpus" != 0 ] || num_cpus=1' >> /etc/init.d/zram
  echo '    # set decremented number of CPUs' >> /etc/init.d/zram
  echo '    decr_num_cpus=$((num_cpus - 1))' >> /etc/init.d/zram
  echo '    # get the amount of memory in the machine' >> /etc/init.d/zram
  echo '    mem_total_kb=$(grep MemTotal /proc/meminfo | grep -E --only-matching "[[:digit:]]+")' >> /etc/init.d/zram
  echo '    mem_total=$((mem_total_kb * 1024))' >> /etc/init.d/zram
  echo '    # load dependency modules' >> /etc/init.d/zram
  echo '    modprobe zram num_devices=$num_cpus' >> /etc/init.d/zram
  echo '    # initialize the devices' >> /etc/init.d/zram
  echo '    for i in $(seq 0 $decr_num_cpus); do' >> /etc/init.d/zram
  echo '      echo $((mem_total / num_cpus)) > /sys/block/zram$i/disksize' >> /etc/init.d/zram
  echo '    done' >> /etc/init.d/zram
  echo '    # Creating swap filesystems' >> /etc/init.d/zram
  echo '    for i in $(seq 0 $decr_num_cpus); do' >> /etc/init.d/zram
  echo '      mkswap /dev/zram$i' >> /etc/init.d/zram
  echo '    done' >> /etc/init.d/zram
  echo '    # Switch the swaps on' >> /etc/init.d/zram
  echo '    for i in $(seq 0 $decr_num_cpus); do' >> /etc/init.d/zram
  echo '      swapon -p 100 /dev/zram$i' >> /etc/init.d/zram
  echo '    done' >> /etc/init.d/zram
  echo '}' >> /etc/init.d/zram
  echo 'stop() {' >> /etc/init.d/zram
  echo '    # get the number of CPUs' >> /etc/init.d/zram
  echo '    num_cpus=$(grep -c processor /proc/cpuinfo)' >> /etc/init.d/zram
  echo '    # set decremented number of CPUs' >> /etc/init.d/zram
  echo '    decr_num_cpus=$((num_cpus - 1))' >> /etc/init.d/zram
  echo '    # Switching off swap' >> /etc/init.d/zram
  echo '    for i in $(seq 0 $decr_num_cpus); do' >> /etc/init.d/zram
  echo '      if [ "$(grep /dev/zram$i /proc/swaps)" != "" ]; then' >> /etc/init.d/zram
  echo '        swapoff /dev/zram$i' >> /etc/init.d/zram
  echo '        sleep 1' >> /etc/init.d/zram
  echo '      fi' >> /etc/init.d/zram
  echo '    done' >> /etc/init.d/zram
  echo '    sleep 1' >> /etc/init.d/zram
  echo '    rmmod zram' >> /etc/init.d/zram
  echo '}' >> /etc/init.d/zram
  echo 'case "$1" in' >> /etc/init.d/zram
  echo '    start)' >> /etc/init.d/zram
  echo '        start' >> /etc/init.d/zram
  echo '        ;;' >> /etc/init.d/zram
  echo '    stop)' >> /etc/init.d/zram
  echo '        stop' >> /etc/init.d/zram
  echo '        ;;' >> /etc/init.d/zram
  echo '    restart)' >> /etc/init.d/zram
  echo '        stop' >> /etc/init.d/zram
  echo '        sleep 3' >> /etc/init.d/zram
  echo '        start' >> /etc/init.d/zram
  echo '        ;;' >> /etc/init.d/zram
  echo '    *)' >> /etc/init.d/zram
  echo '        echo "Usage: $0 {start|stop|restart}"' >> /etc/init.d/zram
  echo '        RETVAL=1' >> /etc/init.d/zram
  echo 'esac' >> /etc/init.d/zram
  echo 'exit $RETVAL' >> /etc/init.d/zram
  chmod +x /etc/init.d/zram
  update-rc.d zram defaults
  echo 'enable_zram' >> $COMPLETION_FILE
}

function check_onerng_verification {
  if grep -Fxq "check_onerng_verification" $COMPLETION_FILE; then
      return
  fi
  if [[ $HWRNG_TYPE != "onerng" ]]; then
      return
  fi
  echo 'Checking OneRNG firmware verification'
  last_onerng_validation=$(cat /var/log/syslog.1 | grep "OneRNG: firmware verification" | awk '/./{line=$0} END{print line}')
  if [[ $last_onerng_validation != *"passed OK"* ]]; then
      last_onerng_validation=$(cat /var/log/syslog | grep "OneRNG: firmware verification" | awk '/./{line=$0} END{print line}')
      if [[ $last_onerng_validation != *"passed OK"* ]]; then
          echo $last_onerng_validation
          echo 'OneRNG firmware verification failed'
          exit 735026
      fi
  fi
  echo 'OneRNG firmware verification passed'
  # if haveged was previously installed then remove it
  apt-get -y remove haveged
  echo 'check_onerng_verification' >> $COMPLETION_FILE
}

function install_onerng {
  apt-get -y install rng-tools at python-gnupg

  # Move to the installation directory
  if [ ! -d $INSTALL_DIR ]; then
      mkdir $INSTALL_DIR
  fi
  cd $INSTALL_DIR

  # Download the package
  if [ ! -f $ONERNG_PACKAGE ]; then
      wget $ONERNG_PACKAGE_DOWNLOAD
      mv "$ONERNG_PACKAGE?raw=true" $ONERNG_PACKAGE
  fi
  if [ ! -f $ONERNG_PACKAGE ]; then
      echo "OneRNG package could not be downloaded"
      exit 59249
  fi

  # Check the hash
  hash=$(sha256sum $ONERNG_PACKAGE | awk -F ' ' '{print $1}')
  if [[ $hash != $ONERNG_PACKAGE_HASH ]]; then
      echo "OneRNG package: $ONERNG_PACKAGE"
      echo "Hash does not match. This could indicate that the package has been tampered with."
      echo "OneRNG expected package hash: $ONERNG_PACKAGE_HASH"
      echo "OneRNG actual hash: $hash"
      exit 25934
  fi

  # install the package
  dpkg -i $ONERNG_PACKAGE

  # Check that the install worked
  if [ ! -f /etc/onerng.conf ]; then
      echo 'OneRNG configuration file not found. The package may not have installed successfully.'
      exit 42904
  fi

  dialog --title "OneRNG Device" \
         --msgbox "Please plug in the OneRNG device" 6 40

  # check rng-tools configuration
  if ! grep -q "/dev/$ONERNG_DEVICE" /etc/default/rng-tools; then
      echo "HRNGDEVICE=/dev/$ONERNG_DEVICE" >> /etc/default/rng-tools
  fi

  systemctl restart rng-tools
}

function random_number_generator {
  if grep -Fxq "random_number_generator" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # it is assumed that docker uses the random number
      # generator of the host system
      return
  fi

  # if the hrng type has not been set but /dev/hwrng is detected
  if [[ $HWRNG_TYPE != "beaglebone" ]]; then
      if [ -e /dev/hwrng ]; then
          HWRNG_TYPE="beaglebone"
      fi
  fi

  case $HWRNG_TYPE in
    beaglebone)
    apt-get -y install rng-tools
    sed -i 's|#HRNGDEVICE=/dev/hwrng|HRNGDEVICE=/dev/hwrng|g' /etc/default/rng-tools
    ;;
    onerng)
    install_onerng
    ;;
    *)
    apt-get -y install haveged
    ;;
  esac

  echo 'random_number_generator' >> $COMPLETION_FILE
}

function configure_ssh {
  if grep -Fxq "configure_ssh" $COMPLETION_FILE; then
      return
  fi
  sed -i "s/Port .*/Port $SSH_PORT/g" /etc/ssh/sshd_config
  sed -i 's/PermitRootLogin.*/PermitRootLogin no/g' /etc/ssh/sshd_config
  sed -i 's/X11Forwarding.*/X11Forwarding no/g' /etc/ssh/sshd_config
  sed -i 's/ServerKeyBits.*/ServerKeyBits 4096/g' /etc/ssh/sshd_config
  sed -i 's/TCPKeepAlive.*/TCPKeepAlive no/g' /etc/ssh/sshd_config
  sed -i 's|HostKey /etc/ssh/ssh_host_dsa_key|#HostKey /etc/ssh/ssh_host_dsa_key|g' /etc/ssh/sshd_config
  sed -i 's|HostKey /etc/ssh/ssh_host_ecdsa_key|#HostKey /etc/ssh/ssh_host_ecdsa_key|g' /etc/ssh/sshd_config
  if grep -q 'ClientAliveInterval' /etc/ssh/sshd_config; then
      sed -i 's/ClientAliveInterval.*/ClientAliveInterval 60/g' /etc/ssh/sshd_config
  else
      echo 'ClientAliveInterval 60' >> /etc/ssh/sshd_config
  fi
  if grep -q 'ClientAliveCountMax' /etc/ssh/sshd_config; then
      sed -i 's/ClientAliveCountMax.*/ClientAliveCountMax 3/g' /etc/ssh/sshd_config
  else
      echo 'ClientAliveCountMax 3' >> /etc/ssh/sshd_config
  fi
  if grep -q 'Ciphers' /etc/ssh/sshd_config; then
      sed -i "s|Ciphers.*|Ciphers $SSH_CIPHERS|g" /etc/ssh/sshd_config
  else
      echo "Ciphers $SSH_CIPHERS" >> /etc/ssh/sshd_config
  fi
  if grep -q 'MACs' /etc/ssh/sshd_config; then
      sed -i "s|MACs.*|MACs $SSH_MACS|g" /etc/ssh/sshd_config
  else
      echo "MACs $SSH_MACS" >> /etc/ssh/sshd_config
  fi
  if grep -q 'KexAlgorithms' /etc/ssh/sshd_config; then
      sed -i "s|KexAlgorithms.*|KexAlgorithms $SSH_KEX|g" /etc/ssh/sshd_config
  else
      echo "KexAlgorithms $SSH_KEX" >> /etc/ssh/sshd_config
  fi

  apt-get -y install fail2ban
  echo 'configure_ssh' >> $COMPLETION_FILE
}

# see https://stribika.github.io/2015/01/04/secure-secure-shell.html
function ssh_remove_small_moduli {
  awk '$5 > 2000' /etc/ssh/moduli > ~/moduli
  mv ~/moduli /etc/ssh/moduli
}

function configure_ssh_client {
  if grep -Fxq "configure_ssh_client" $COMPLETION_FILE; then
      return
  fi
  #sed -i 's/#   PasswordAuthentication.*/   PasswordAuthentication no/g' /etc/ssh/ssh_config
  #sed -i 's/#   ChallengeResponseAuthentication.*/   ChallengeResponseAuthentication no/g' /etc/ssh/ssh_config
  sed -i "s/#   HostKeyAlgorithms.*/   HostKeyAlgorithms $SSH_HOST_KEY_ALGORITHMS/g" /etc/ssh/ssh_config
  sed -i "s/#   Ciphers.*/   Ciphers $SSH_CIPHERS/g" /etc/ssh/ssh_config
  sed -i "s/#   MACs.*/   MACs $SSH_MACS/g" /etc/ssh/ssh_config
  if ! grep -q "HostKeyAlgorithms" /etc/ssh/ssh_config; then
      echo "   HostKeyAlgorithms $SSH_HOST_KEY_ALGORITHMS" >> /etc/ssh/ssh_config
  fi
  sed -i "s/Ciphers.*/Ciphers $SSH_CIPHERS/g" /etc/ssh/ssh_config
  if ! grep -q "Ciphers " /etc/ssh/ssh_config; then
      echo "   Ciphers $SSH_CIPHERS" >> /etc/ssh/ssh_config
  fi
  sed -i "s/MACs.*/MACs $SSH_MACS/g" /etc/ssh/ssh_config
  if ! grep -q "MACs " /etc/ssh/ssh_config; then
      echo "   MACs $SSH_MACS" >> /etc/ssh/ssh_config
  fi

  # Create ssh keys
  if [ ! -f ~/.ssh/id_ed25519 ]; then
      ssh-keygen -t ed25519 -o -a 100
  fi
  if [ ! -f ~/.ssh/id_rsa ]; then
      ssh-keygen -t rsa -b 4096 -o -a 100
  fi

  ssh_remove_small_moduli
  echo 'configure_ssh_client' >> $COMPLETION_FILE
}

function regenerate_ssh_keys {
  if grep -Fxq "regenerate_ssh_keys" $COMPLETION_FILE; then
      return
  fi
  rm -f /etc/ssh/ssh_host_*
  dpkg-reconfigure openssh-server
  ssh_remove_small_moduli
  service ssh restart
  echo 'regenerate_ssh_keys' >> $COMPLETION_FILE
}

function configure_dns {
  if grep -Fxq "configure_dns" $COMPLETION_FILE; then
      return
  fi
  echo 'domain localdomain' > /etc/resolv.conf
  echo 'search localdomain' >> /etc/resolv.conf
  echo "nameserver $NAMESERVER1" >> /etc/resolv.conf
  echo "nameserver $NAMESERVER2" >> /etc/resolv.conf
  echo 'configure_dns' >> $COMPLETION_FILE
}

function set_your_domain_name {
  if grep -Fxq "set_your_domain_name" $COMPLETION_FILE; then
      return
  fi

  echo "$DEFAULT_DOMAIN_NAME" > /etc/hostname
  hostname $DEFAULT_DOMAIN_NAME

  if grep -q "127.0.1.1" /etc/hosts; then
      sed -i "s/127.0.1.1.*/127.0.1.1       $DEFAULT_DOMAIN_NAME/g" /etc/hosts
  else
      echo "127.0.1.1  $DEFAULT_DOMAIN_NAME" >> /etc/hosts
  fi
  echo 'set_your_domain_name' >> $COMPLETION_FILE
}

function time_synchronisation {
  # mesh peers typically don't sync over the internet
  if [[ $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi

  # remove any previous version of tlsdate compiled from source
  reinstall_tlsdate="no"
  if [ -d $INSTALL_DIR/tlsdate ]; then
      if [ -f /usr/bin/tlsdate ]; then
          echo 'Removing previous tlsdate install'
          rm -rf $INSTALL_DIR/tlsdate
          rm -f /usr/bin/tlsdate
          reinstall_tlsdate="yes"
          echo 'Reinstalling tlsdate'
      fi
  fi

  if grep -Fxq "time_synchronisation" $COMPLETION_FILE; then
      if [[ $reinstall_tlsdate == "no" ]]; then
          return
      fi
  fi

  apt-get -y install tlsdate
  apt-get -y remove ntpdate

  echo '#!/bin/bash' > /usr/bin/updatedate
  echo "TIMESOURCE='${TLS_TIME_SOURCE1}'" >> /usr/bin/updatedate
  echo "TIMESOURCE2='${TLS_TIME_SOURCE2}'" >> /usr/bin/updatedate
  echo "COMPLETION_FILE=$COMPLETION_FILE" >> /usr/bin/updatedate
  echo 'LOGFILE=/var/log/tlsdate.log' >> /usr/bin/updatedate
  echo 'TIMEOUT=5' >> /usr/bin/updatedate
  echo 'if grep -q "Admin user" $COMPLETION_FILE; then' >> /usr/bin/updatedate
  echo -n '    ADMIN_USER=$(cat $COMPLETION_FILE | grep "Admin user" | ' >> /usr/bin/updatedate
  echo -n "awk -F ':' '{print " >> /usr/bin/updatedate
  echo -n '$2' >> /usr/bin/updatedate
  echo "}')" >> /usr/bin/updatedate
  echo '    EMAIL=$ADMIN_USER@$HOSTNAME' >> /usr/bin/updatedate
  echo 'else' >> /usr/bin/updatedate
  echo "    EMAIL=$MY_EMAIL_ADDRESS" >> /usr/bin/updatedate
  echo 'fi' >> /usr/bin/updatedate
  echo '# File which contains the previous date as a number' >> /usr/bin/updatedate
  echo 'BEFORE_DATE_FILE=/var/log/tlsdateprevious.txt' >> /usr/bin/updatedate
  echo '# File which contains the previous date as a string' >> /usr/bin/updatedate
  echo 'BEFORE_FULLDATE_FILE=/var/log/tlsdate.txt' >> /usr/bin/updatedate
  echo 'DATE_BEFORE=$(date)' >> /usr/bin/updatedate
  echo 'BEFORE=$(date "+%s")' >> /usr/bin/updatedate
  echo 'BACKWARDS_BETWEEN=0' >> /usr/bin/updatedate
  echo 're="^[0-9]+$"' >> /usr/bin/updatedate
  echo '# If the date was previously set' >> /usr/bin/updatedate
  echo 'if [ -s "$BEFORE_DATE_FILE" ]; then' >> /usr/bin/updatedate
  echo '    filesize=$(wc -c "$BEFORE_DATE_FILE" | cut -f 1 -d " ")' >> /usr/bin/updatedate
  echo '    if [ $filesize -ge 5 ]; then' >> /usr/bin/updatedate
  echo '        BEFORE_FILE=$(cat $BEFORE_DATE_FILE)' >> /usr/bin/updatedate
  echo '        if [[ $BEFORE_FILE =~ $re ]]; then' >> /usr/bin/updatedate
  echo '            BEFORE_FULLDATE=$(cat $BEFORE_FULLDATE_FILE)' >> /usr/bin/updatedate
  echo '            # is the date going backwards?' >> /usr/bin/updatedate
  echo '            if (( $BEFORE_FILE > $BEFORE )); then' >> /usr/bin/updatedate
  echo '                echo -n "Date went backwards between tlsdate updates. " >> $LOGFILE' >> /usr/bin/updatedate
  echo '                echo -n "$BEFORE_FILE > $BEFORE, " >> $LOGFILE' >> /usr/bin/updatedate
  echo '                echo "$BEFORE_FULLDATE > $DATE_BEFORE" >> $LOGFILE' >> /usr/bin/updatedate
  echo '                # Send a warning email' >> /usr/bin/updatedate
  echo '                echo $(tail $LOGFILE -n 2) | mail -s "tlsdate anomaly" $EMAIL' >> /usr/bin/updatedate
  echo '                # Try another time source' >> /usr/bin/updatedate
  echo '                TIMESOURCE=$TIMESOURCE2' >> /usr/bin/updatedate
  echo '                # try running without any parameters' >> /usr/bin/updatedate
  echo '                tlsdate >> $LOGFILE' >> /usr/bin/updatedate
  echo '                BACKWARDS_BETWEEN=1' >> /usr/bin/updatedate
  echo '            fi' >> /usr/bin/updatedate
  echo '        fi' >> /usr/bin/updatedate
  echo '    fi' >> /usr/bin/updatedate
  echo 'fi' >> /usr/bin/updatedate
  echo '# Set the date' >> /usr/bin/updatedate
  echo '/usr/bin/timeout $TIMEOUT tlsdate -l -t -H $TIMESOURCE -p 443 >> $LOGFILE' >> /usr/bin/updatedate
  echo 'DATE_AFTER=$(date)' >> /usr/bin/updatedate
  echo 'AFTER=$(date "+%s")' >> /usr/bin/updatedate
  echo '# After setting the date did it go backwards?' >> /usr/bin/updatedate
  echo 'if (( $AFTER < $BEFORE )); then' >> /usr/bin/updatedate
  echo '    echo "Incorrect date: $DATE_BEFORE -> $DATE_AFTER" >> $LOGFILE' >> /usr/bin/updatedate
  echo '    # Send a warning email' >> /usr/bin/updatedate
  echo '    echo $(tail $LOGFILE -n 2) | mail -s "tlsdate anomaly" $EMAIL' >> /usr/bin/updatedate
  echo '    # Try resetting the date from another time source' >> /usr/bin/updatedate
  echo '    /usr/bin/timeout $TIMEOUT tlsdate -l -t -H $TIMESOURCE2 -p 443 >> $LOGFILE' >> /usr/bin/updatedate
  echo '    DATE_AFTER=$(date)' >> /usr/bin/updatedate
  echo '    AFTER=$(date "+%s")' >> /usr/bin/updatedate
  echo 'else' >> /usr/bin/updatedate
  echo '    echo -n $TIMESOURCE >> $LOGFILE' >> /usr/bin/updatedate
  echo '    if [ -s "$BEFORE_DATE_FILE" ]; then' >> /usr/bin/updatedate
  echo '        echo -n " " >> $LOGFILE' >> /usr/bin/updatedate
  echo '        echo -n $BEFORE_FILE >> $LOGFILE' >> /usr/bin/updatedate
  echo '    fi' >> /usr/bin/updatedate
  echo '    echo -n " " >> $LOGFILE' >> /usr/bin/updatedate
  echo '    echo -n $BEFORE >> $LOGFILE' >> /usr/bin/updatedate
  echo '    echo -n " " >> $LOGFILE' >> /usr/bin/updatedate
  echo '    echo -n $AFTER >> $LOGFILE' >> /usr/bin/updatedate
  echo '    echo -n " " >> $LOGFILE' >> /usr/bin/updatedate
  echo '    echo $DATE_AFTER >> $LOGFILE' >> /usr/bin/updatedate
  echo 'fi' >> /usr/bin/updatedate
  echo '# Log the last date' >> /usr/bin/updatedate
  echo 'if [[ $BACKWARDS_BETWEEN == 0 ]]; then' >> /usr/bin/updatedate
  echo '    echo "$AFTER" > $BEFORE_DATE_FILE' >> /usr/bin/updatedate
  echo '    echo "$DATE_AFTER" > $BEFORE_FULLDATE_FILE' >> /usr/bin/updatedate
  echo '    exit 0' >> /usr/bin/updatedate
  echo 'else' >> /usr/bin/updatedate
  echo '    exit 1' >> /usr/bin/updatedate
  echo 'fi' >> /usr/bin/updatedate
  chmod +x /usr/bin/updatedate
  echo '*/15           * *   *   *   root /usr/bin/updatedate' >> /etc/crontab
  service cron restart

  if [[ $reinstall_tlsdate != "no" ]]; then
      echo 'tlsdate was reinstalled'
  fi

  echo 'time_synchronisation' >> $COMPLETION_FILE
}

function configure_firewall {
  if grep -Fxq "configure_firewall" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  iptables -P INPUT ACCEPT
  ip6tables -P INPUT ACCEPT
  iptables -F
  ip6tables -F
  iptables -t nat -F
  ip6tables -t nat -F
  iptables -X
  ip6tables -X
  iptables -P INPUT DROP
  ip6tables -P INPUT DROP
  iptables -A INPUT -i lo -j ACCEPT
  iptables -A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT

  # Make sure incoming tcp connections are SYN packets
  iptables -A INPUT -p tcp ! --syn -m state --state NEW -j DROP

  # Drop packets with incoming fragments
  iptables -A INPUT -f -j DROP

  # Drop bogons
  iptables -A INPUT -p tcp --tcp-flags ALL ALL -j DROP
  iptables -A INPUT -p tcp --tcp-flags ALL FIN,PSH,URG -j DROP
  iptables -A INPUT -p tcp --tcp-flags ALL SYN,RST,ACK,FIN,URG -j DROP

  # Incoming malformed NULL packets:
  iptables -A INPUT -p tcp --tcp-flags ALL NONE -j DROP

  echo 'configure_firewall' >> $COMPLETION_FILE
}

function configure_firewall_ping {
  if grep -Fxq "configure_firewall_ping" $COMPLETION_FILE; then
      return
  fi
  # Only allow ping for mesh installs
  if [[ $SYSTEM_TYPE != "$VARIANT_MESH" ]]; then
      return
  fi
  iptables -A INPUT -p icmp --icmp-type echo-request -j ACCEPT
  iptables -A OUTPUT -p icmp --icmp-type echo-reply -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_ping' >> $COMPLETION_FILE
}

function configure_firewall_for_voip {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_DEVELOPER" ]]; then
      return
  fi
  if grep -Fxq "configure_firewall_for_voip" $COMPLETION_FILE; then
      return
  fi
  iptables -A INPUT -p udp --dport $VOIP_PORT -j ACCEPT
  iptables -A INPUT -p tcp --dport $VOIP_PORT -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_voip' >> $COMPLETION_FILE
}

function configure_firewall_for_sip {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_DEVELOPER" ]]; then
      return
  fi
  if grep -Fxq "configure_firewall_for_sip" $COMPLETION_FILE; then
      return
  fi
  iptables -A INPUT -p udp --dport $SIP_PORT -j ACCEPT
  iptables -A INPUT -p tcp --dport $SIP_PORT -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_sip' >> $COMPLETION_FILE
}

function configure_firewall_for_ipfs {
  if [[ $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CHAT" ]]; then
      return
  fi
  if grep -Fxq "configure_firewall_for_ipfs" $COMPLETION_FILE; then
      return
  fi
  iptables -A INPUT -p tcp --dport $IPFS_PORT -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_ipfs' >> $COMPLETION_FILE
}

function configure_firewall_for_avahi {
  if grep -Fxq "configure_firewall_for_avahi" $COMPLETION_FILE; then
      return
  fi
  iptables -A INPUT -p tcp --dport 548 -j ACCEPT
  iptables -A INPUT -p udp --dport 548 -j ACCEPT
  iptables -A INPUT -p tcp --dport 5353 -j ACCEPT
  iptables -A INPUT -p udp --dport 5353 -j ACCEPT
  iptables -A INPUT -p tcp --dport 5354 -j ACCEPT
  iptables -A INPUT -p udp --dport 5354 -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_avahi' >> $COMPLETION_FILE
}

function configure_firewall_for_cjdns {
  if grep -Fxq "configure_firewall_for_cjdns" $COMPLETION_FILE; then
      return
  fi
  if [[ $ENABLE_CJDNS != "yes" ]]; then
      return
  fi
  ip6tables -t nat -A POSTROUTING -o tun0 -j MASQUERADE
  ip6tables -A FORWARD -i tun0 -o eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_cjdns' >> $COMPLETION_FILE
}

function configure_firewall_for_batman {
  if grep -Fxq "configure_firewall_for_batman" $COMPLETION_FILE; then
      return
  fi
  if [[ $ENABLE_BATMAN != "yes" ]]; then
      return
  fi

  save_firewall_settings
  echo 'configure_firewall_for_batman' >> $COMPLETION_FILE
}

function configure_firewall_for_babel {
  if grep -Fxq "configure_firewall_for_babel" $COMPLETION_FILE; then
      return
  fi
  if [[ $ENABLE_BABEL != "yes" ]]; then
      return
  fi
  iptables -A INPUT -i $WIFI_INTERFACE -p udp --dport $BABEL_PORT -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_babel' >> $COMPLETION_FILE
}

function configure_firewall_for_zeronet {
  if grep -Fxq "configure_firewall_for_zeronet" $COMPLETION_FILE; then
      return
  fi
  if [[ $SYSTEM_TYPE != "$VARIANT_MESH" ]]; then
      return
  fi
  iptables -A INPUT -i $WIFI_INTERFACE -p udp --dport $ZERONET_PORT -j ACCEPT
  iptables -A INPUT -i $WIFI_INTERFACE -p tcp --dport $ZERONET_PORT -j ACCEPT
  iptables -A INPUT -i $WIFI_INTERFACE -p udp --dport $TRACKER_PORT -j ACCEPT
  iptables -A INPUT -i $WIFI_INTERFACE -p tcp --dport $TRACKER_PORT -j ACCEPT
  iptables -A INPUT -i $WIFI_INTERFACE -p udp --dport 1900 -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_zeronet' >> $COMPLETION_FILE
}

function configure_firewall_for_dlna {
  if grep -Fxq "configure_firewall_for_dlna" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" ]]; then
      return
  fi
  iptables -A INPUT -p udp --dport 1900 -j ACCEPT
  iptables -A INPUT -p tcp --dport 8200 -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_dlna' >> $COMPLETION_FILE
}

function configure_firewall_for_dns {
  if grep -Fxq "configure_firewall_for_dns" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  iptables -A INPUT -p udp -m udp --dport 1024:65535 --sport 53 -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_dns' >> $COMPLETION_FILE
}

function configure_firewall_for_xmpp {
  if [ ! -d /etc/prosody ]; then
      return
  fi
  if grep -Fxq "configure_firewall_for_xmpp" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  iptables -A INPUT -p tcp --dport 5222:5223 -j ACCEPT
  iptables -A INPUT -p tcp --dport 5269 -j ACCEPT
  iptables -A INPUT -p tcp --dport 5280:5281 -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_xmpp' >> $COMPLETION_FILE
}

function configure_firewall_for_irc {
  if [ ! -d /etc/ngircd ]; then
      return
  fi
  if grep -Fxq "configure_firewall_for_irc" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  iptables -A INPUT -p tcp --dport $IRC_PORT  -j ACCEPT
  iptables -I INPUT -p tcp --dport 1024:65535 --sport $IRC_PORT -j ACCEPT
  iptables -A INPUT -p tcp --dport 9999 -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_irc' >> $COMPLETION_FILE
}

function configure_firewall_for_ftp {
  if grep -Fxq "configure_firewall_for_ftp" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  iptables -I INPUT -p tcp --dport 1024:65535 --sport 20:21 -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_ftp' >> $COMPLETION_FILE
}

function configure_firewall_for_web_access {
  if grep -Fxq "configure_firewall_for_web_access" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  iptables -A INPUT -p tcp --dport 32768:61000 --sport 80 -j ACCEPT
  iptables -A INPUT -p tcp --dport 32768:61000 --sport 443 -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_web_access' >> $COMPLETION_FILE
}

function configure_firewall_for_web_server {
  if grep -Fxq "configure_firewall_for_web_server" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  iptables -A INPUT -p tcp --dport 80 -j ACCEPT
  iptables -A INPUT -p tcp --dport 443 -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_web_server' >> $COMPLETION_FILE
}

function configure_firewall_for_tox {
  if grep -Fxq "configure_firewall_for_tox" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  iptables -A INPUT -p tcp --dport $TOX_PORT -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_tox' >> $COMPLETION_FILE
}

function configure_firewall_for_ssh {
  if grep -Fxq "configure_firewall_for_ssh" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  iptables -A INPUT -p tcp --dport 22 -j ACCEPT
  iptables -A INPUT -p tcp --dport $SSH_PORT -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_ssh' >> $COMPLETION_FILE
}

function configure_firewall_for_git {
  if grep -Fxq "configure_firewall_for_git" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  iptables -A INPUT -p tcp --dport 9418 -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_git' >> $COMPLETION_FILE
}

function configure_firewall_for_email {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_DEVELOPER" || $SYSTEM_TYPE == "$VARIANT_MESH" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" ]]; then
      return
  fi
  if grep -Fxq "configure_firewall_for_email" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  iptables -A INPUT -p tcp --dport 25 -j ACCEPT
  iptables -A INPUT -p tcp --dport 587 -j ACCEPT
  iptables -A INPUT -p tcp --dport 465 -j ACCEPT
  iptables -A INPUT -p tcp --dport 993 -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_email' >> $COMPLETION_FILE
}

function configure_internet_protocol {
  if grep -Fxq "configure_internet_protocol" $COMPLETION_FILE; then
      return
  fi
  if [[ $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  sed -i "s/#net.ipv4.tcp_syncookies=1/net.ipv4.tcp_syncookies=1/g" /etc/sysctl.conf
  sed -i "s/#net.ipv4.conf.all.accept_redirects = 0/net.ipv4.conf.all.accept_redirects = 0/g" /etc/sysctl.conf
  sed -i "s/#net.ipv6.conf.all.accept_redirects = 0/net.ipv6.conf.all.accept_redirects = 0/g" /etc/sysctl.conf
  sed -i "s/#net.ipv4.conf.all.send_redirects = 0/net.ipv4.conf.all.send_redirects = 0/g" /etc/sysctl.conf
  sed -i "s/#net.ipv4.conf.all.accept_source_route = 0/net.ipv4.conf.all.accept_source_route = 0/g" /etc/sysctl.conf
  sed -i "s/#net.ipv6.conf.all.accept_source_route = 0/net.ipv6.conf.all.accept_source_route = 0/g" /etc/sysctl.conf
  sed -i "s/#net.ipv4.conf.default.rp_filter=1/net.ipv4.conf.default.rp_filter=1/g" /etc/sysctl.conf
  sed -i "s/#net.ipv4.conf.all.rp_filter=1/net.ipv4.conf.all.rp_filter=1/g" /etc/sysctl.conf
  sed -i "s/#net.ipv4.ip_forward=1/net.ipv4.ip_forward=0/g" /etc/sysctl.conf
  sed -i "s/#net.ipv6.conf.all.forwarding=1/net.ipv6.conf.all.forwarding=0/g" /etc/sysctl.conf
  if ! grep -q "ignore pings" /etc/sysctl.conf; then
      echo '# ignore pings' >> /etc/sysctl.conf
      echo 'net.ipv4.icmp_echo_ignore_all = 1' >> /etc/sysctl.conf
      echo 'net.ipv6.icmp_echo_ignore_all = 1' >> /etc/sysctl.conf
  fi
  if ! grep -q "disable ipv6" /etc/sysctl.conf; then
      echo '# disable ipv6' >> /etc/sysctl.conf
      echo 'net.ipv6.conf.all.disable_ipv6 = 1' >> /etc/sysctl.conf
  fi
  if ! grep -q "net.ipv4.tcp_synack_retries" /etc/sysctl.conf; then
      echo 'net.ipv4.tcp_synack_retries = 2' >> /etc/sysctl.conf
      echo 'net.ipv4.tcp_syn_retries = 1' >> /etc/sysctl.conf
  fi
  if ! grep -q "keepalive" /etc/sysctl.conf; then
      echo '# keepalive' >> /etc/sysctl.conf
      echo 'net.ipv4.tcp_keepalive_probes = 9' >> /etc/sysctl.conf
      echo 'net.ipv4.tcp_keepalive_intvl = 75' >> /etc/sysctl.conf
      echo 'net.ipv4.tcp_keepalive_time = 7200' >> /etc/sysctl.conf
  fi
  echo 'configure_internet_protocol' >> $COMPLETION_FILE
}

function configure_email {
  if [[ $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  if grep -Fxq "configure_email" $COMPLETION_FILE; then
      return
  fi
  apt-get -y remove postfix
  apt-get -y install exim4 sasl2-bin swaks libnet-ssleay-perl procmail

  if [ ! -d /etc/exim4 ]; then
      echo "ERROR: Exim does not appear to have installed. $CHECK_MESSAGE"
      exit 48
  fi

  # configure for Maildir format
  sed -i 's/MAIL_DIR/#MAIL_DIR/g' /etc/login.defs
  sed -i 's|#MAIL_FILE.*|MAIL_FILE Maildir/|g' /etc/login.defs

  if ! grep -q "export MAIL" /etc/profile; then
      echo 'export MAIL=~/Maildir' >> /etc/profile
  fi

  sed -i 's|pam_mail.so standard|pam_mail.so dir=~/Maildir standard|g' /etc/pam.d/login
  sed -i 's|pam_mail.so standard noenv|pam_mail.so dir=~/Maildir standard|g' /etc/pam.d/sshd
  sed -i 's|pam_mail.so nopen|pam_mail.so dir=~/Maildir nopen|g' /etc/pam.d/su

  echo 'dc_eximconfig_configtype="internet"' > /etc/exim4/update-exim4.conf.conf
  echo "dc_other_hostnames='$DEFAULT_DOMAIN_NAME'" >> /etc/exim4/update-exim4.conf.conf
  echo "dc_local_interfaces=''" >> /etc/exim4/update-exim4.conf.conf
  echo "dc_readhost=''" >> /etc/exim4/update-exim4.conf.conf
  echo "dc_relay_domains=''" >> /etc/exim4/update-exim4.conf.conf
  echo "dc_minimaldns='false'" >> /etc/exim4/update-exim4.conf.conf
  RELAY_NETS='192.168.1.0/24'
  if [ $LOCAL_NETWORK_STATIC_IP_ADDRESS ]; then
      RELAY_NETS=$(echo $LOCAL_NETWORK_STATIC_IP_ADDRESS | awk -F '.' '{print $1 "." $2 "." $3 ".0/24"}')
  fi
  echo "dc_relay_nets='$RELAY_NETS'" >> /etc/exim4/update-exim4.conf.conf
  echo "dc_smarthost=''" >> /etc/exim4/update-exim4.conf.conf
  echo "CFILEMODE='644'" >> /etc/exim4/update-exim4.conf.conf
  echo "dc_use_split_config='false'" >> /etc/exim4/update-exim4.conf.conf
  echo "dc_hide_mailname=''" >> /etc/exim4/update-exim4.conf.conf
  echo "dc_mailname_in_oh='true'" >> /etc/exim4/update-exim4.conf.conf
  echo "dc_localdelivery='maildir_home'" >> /etc/exim4/update-exim4.conf.conf
  update-exim4.conf
  sed -i "s/START=no/START=yes/g" /etc/default/saslauthd
  /etc/init.d/saslauthd start

  # make a tls certificate for email
  if [ ! -f /etc/ssl/certs/exim.dhparam ]; then
      ${PROJECT_NAME}-addcert -h exim --dhkey $DH_KEYLENGTH
      check_certificates exim
  fi
  cp /etc/ssl/private/exim.key /etc/exim4
  cp /etc/ssl/certs/exim.crt /etc/exim4
  cp /etc/ssl/certs/exim.dhparam /etc/exim4
  chown root:Debian-exim /etc/exim4/exim.key /etc/exim4/exim.crt /etc/exim4/exim.dhparam
  chmod 640 /etc/exim4/exim.key /etc/exim4/exim.crt /etc/exim4/exim.dhparam

  sed -i '/login_saslauthd_server/,/.endif/ s/# *//' /etc/exim4/exim4.conf.template
  sed -i "/.ifdef MAIN_HARDCODE_PRIMARY_HOSTNAME/i\MAIN_HARDCODE_PRIMARY_HOSTNAME = $DEFAULT_DOMAIN_NAME\nMAIN_TLS_ENABLE = true" /etc/exim4/exim4.conf.template
  sed -i "s|SMTPLISTENEROPTIONS=''|SMTPLISTENEROPTIONS='-oX 465:25:587 -oP /var/run/exim4/exim.pid'|g" /etc/default/exim4
  if ! grep -q "tls_on_connect_ports=465" /etc/exim4/exim4.conf.template; then
    sed -i '/SSL configuration for exim/i\tls_on_connect_ports=465' /etc/exim4/exim4.conf.template
  fi

  adduser $MY_USERNAME sasl
  addgroup Debian-exim sasl
  /etc/init.d/exim4 restart
  if [ ! -d /etc/skel/Maildir ]; then
    mkdir -m 700 /etc/skel/.mutt
    mkdir -m 700 /etc/skel/Maildir
    mkdir -m 700 /etc/skel/Maildir/Sent
    mkdir -m 700 /etc/skel/Maildir/Sent/tmp
    mkdir -m 700 /etc/skel/Maildir/Sent/cur
    mkdir -m 700 /etc/skel/Maildir/Sent/new
    mkdir -m 700 /etc/skel/Maildir/.learn-spam
    mkdir -m 700 /etc/skel/Maildir/.learn-spam/cur
    mkdir -m 700 /etc/skel/Maildir/.learn-spam/new
    mkdir -m 700 /etc/skel/Maildir/.learn-spam/tmp
    mkdir -m 700 /etc/skel/Maildir/.learn-ham
    mkdir -m 700 /etc/skel/Maildir/.learn-ham/cur
    mkdir -m 700 /etc/skel/Maildir/.learn-ham/new
    mkdir -m 700 /etc/skel/Maildir/.learn-ham/tmp
    ln -s /etc/skel/Maildir/.learn-spam /etc/skel/Maildir/spam
    ln -s /etc/skel/Maildir/.learn-ham /etc/skel/Maildir/ham
  fi

  if [ ! -d /home/$MY_USERNAME/Maildir ]; then
    mkdir -m 700 /home/$MY_USERNAME/.mutt
    mkdir -m 700 /home/$MY_USERNAME/Maildir
    mkdir -m 700 /home/$MY_USERNAME/Maildir/cur
    mkdir -m 700 /home/$MY_USERNAME/Maildir/tmp
    mkdir -m 700 /home/$MY_USERNAME/Maildir/new
    mkdir -m 700 /home/$MY_USERNAME/Maildir/Sent
    mkdir -m 700 /home/$MY_USERNAME/Maildir/Sent/cur
    mkdir -m 700 /home/$MY_USERNAME/Maildir/Sent/tmp
    mkdir -m 700 /home/$MY_USERNAME/Maildir/Sent/new
    mkdir -m 700 /home/$MY_USERNAME/Maildir/.learn-spam
    mkdir -m 700 /home/$MY_USERNAME/Maildir/.learn-spam/cur
    mkdir -m 700 /home/$MY_USERNAME/Maildir/.learn-spam/new
    mkdir -m 700 /home/$MY_USERNAME/Maildir/.learn-spam/tmp
    mkdir -m 700 /home/$MY_USERNAME/Maildir/.learn-ham
    mkdir -m 700 /home/$MY_USERNAME/Maildir/.learn-ham/cur
    mkdir -m 700 /home/$MY_USERNAME/Maildir/.learn-ham/new
    mkdir -m 700 /home/$MY_USERNAME/Maildir/.learn-ham/tmp
    ln -s /home/$MY_USERNAME/Maildir/.learn-spam /home/$MY_USERNAME/Maildir/spam
    ln -s /home/$MY_USERNAME/Maildir/.learn-ham /home/$MY_USERNAME/Maildir/ham
    chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/Maildir
  fi
  echo 'configure_email' >> $COMPLETION_FILE
}

function create_procmail {
  if [[ $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  if grep -Fxq "create_procmail" $COMPLETION_FILE; then
      return
  fi
  if [ ! -f /home/$MY_USERNAME/.procmailrc ]; then
      echo 'MAILDIR=$HOME/Maildir' > /home/$MY_USERNAME/.procmailrc
      echo 'DEFAULT=$MAILDIR/' >> /home/$MY_USERNAME/.procmailrc
      echo 'LOGFILE=$HOME/log/procmail.log' >> /home/$MY_USERNAME/.procmailrc
      echo 'LOGABSTRACT=all' >> /home/$MY_USERNAME/.procmailrc
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.procmailrc
  fi

  if [ ! -f /etc/skel/.procmailrc ]; then
      cp /home/$MY_USERNAME/.procmailrc /etc/skel/.procmailrc
      chown root:root /etc/skel/.procmailrc
  fi

  echo 'create_procmail' >> $COMPLETION_FILE
}

function spam_filtering {
  if [[ $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  if grep -Fxq "spam_filtering" $COMPLETION_FILE; then
      return
  fi
  apt-get -y install exim4-daemon-heavy
  apt-get -y install spamassassin
  sa-update -v
  sed -i 's/ENABLED=0/ENABLED=1/g' /etc/default/spamassassin
  sed -i 's/# spamd_address = 127.0.0.1 783/spamd_address = 127.0.0.1 783/g' /etc/exim4/exim4.conf.template
  # This configuration is based on https://wiki.debian.org/DebianSpamAssassin
  sed -i 's/local_parts = postmaster/local_parts = postmaster:abuse/g' /etc/exim4/conf.d/acl/30_exim4-config_check_rcpt
  sed -i '/domains = +local_domains : +relay_to_domains/a\    set acl_m0 = rfcnames' /etc/exim4/conf.d/acl/30_exim4-config_check_rcpt
  sed -i 's/accept/accept condition = ${if eq{$acl_m0}{rfcnames} {1}{0}}/g' /etc/exim4/conf.d/acl/40_exim4-config_check_data
  echo 'warn  message = X-Spam-Score: $spam_score ($spam_bar)' >> /etc/exim4/conf.d/acl/40_exim4-config_check_data
  echo '      spam = nobody:true' >> /etc/exim4/conf.d/acl/40_exim4-config_check_data
  echo 'warn  message = X-Spam-Flag: YES' >> /etc/exim4/conf.d/acl/40_exim4-config_check_data
  echo '      spam = nobody' >> /etc/exim4/conf.d/acl/40_exim4-config_check_data
  echo 'warn  message = X-Spam-Report: $spam_report' >> /etc/exim4/conf.d/acl/40_exim4-config_check_data
  echo '      spam = nobody' >> /etc/exim4/conf.d/acl/40_exim4-config_check_data
  echo '# reject spam at high scores (> 12)' >> /etc/exim4/conf.d/acl/40_exim4-config_check_data
  echo 'deny  message = This message scored $spam_score spam points.' >> /etc/exim4/conf.d/acl/40_exim4-config_check_data
  echo '      spam = nobody:true' >> /etc/exim4/conf.d/acl/40_exim4-config_check_data
  echo '      condition = ${if >{$spam_score_int}{120}{1}{0}}' >> /etc/exim4/conf.d/acl/40_exim4-config_check_data
  # procmail configuration
  echo '# get spamassassin to check emails' >> /home/$MY_USERNAME/.procmailrc
  echo ':0fw: .spamassassin.lock' >> /home/$MY_USERNAME/.procmailrc
  echo '  * < 256000' >> /home/$MY_USERNAME/.procmailrc
  echo '| spamc' >> /home/$MY_USERNAME/.procmailrc
  echo '# strong spam are discarded' >> /home/$MY_USERNAME/.procmailrc
  echo ':0' >> /home/$MY_USERNAME/.procmailrc
  echo '  * ^X-Spam-Level: \*\*\*\*\*\*' >> /home/$MY_USERNAME/.procmailrc
  echo '/dev/null' >> /home/$MY_USERNAME/.procmailrc
  echo '# weak spam are kept just in case - clear this out every now and then' >> /home/$MY_USERNAME/.procmailrc
  echo ':0' >> /home/$MY_USERNAME/.procmailrc
  echo '  * ^X-Spam-Level: \*\*\*\*\*' >> /home/$MY_USERNAME/.procmailrc
  echo 'maybe-spam/' >> /home/$MY_USERNAME/.procmailrc
  echo '# otherwise, marginal spam goes here for revision' >> /home/$MY_USERNAME/.procmailrc
  echo ':0' >> /home/$MY_USERNAME/.procmailrc
  echo '  * ^X-Spam-Level: \*\*' >> /home/$MY_USERNAME/.procmailrc
  echo 'spam/' >> /home/$MY_USERNAME/.procmailrc
  chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.procmailrc
  echo '# get spamassassin to check emails' >> /etc/skel/.procmailrc
  echo ':0fw: .spamassassin.lock' >> /etc/skel/.procmailrc
  echo '  * < 256000' >> /etc/skel/.procmailrc
  echo '| spamc' >> /etc/skel/.procmailrc
  echo '# strong spam are discarded' >> /etc/skel/.procmailrc
  echo ':0' >> /etc/skel/.procmailrc
  echo '  * ^X-Spam-Level: \*\*\*\*\*\*' >> /etc/skel/.procmailrc
  echo '/dev/null' >> /etc/skel/.procmailrc
  echo '# weak spam are kept just in case - clear this out every now and then' >> /etc/skel/.procmailrc
  echo ':0' >> /etc/skel/.procmailrc
  echo '  * ^X-Spam-Level: \*\*\*\*\*' >> /etc/skel/.procmailrc
  echo 'maybe-spam/' >> /etc/skel/.procmailrc
  echo '# otherwise, marginal spam goes here for revision' >> /etc/skel/.procmailrc
  echo ':0' >> /etc/skel/.procmailrc
  echo '  * ^X-Spam-Level: \*\*' >> /etc/skel/.procmailrc
  echo 'spam/' >> /etc/skel/.procmailrc
  # filtering scripts
  echo '#!/bin/bash' > /usr/bin/filterspam
  echo 'for d in /home/*/ ; do' >> /usr/bin/filterspam
  echo '    USERNAME=$(echo "$d" | awk -F '"'"'/'"'"' '"'"'{print $3}'"'"')' >> /usr/bin/filterspam
  echo '    if [[ $USERNAME != "git" ]]; then' >> /usr/bin/filterspam
  echo '        MAILDIR=/home/$USERNAME/Maildir/.learn-spam' >> /usr/bin/filterspam
  echo '        if [ ! -d "$MAILDIR" ]; then' >> /usr/bin/filterspam
  echo '           exit' >> /usr/bin/filterspam
  echo '        fi' >> /usr/bin/filterspam
  echo '        for f in `ls $MAILDIR/cur`' >> /usr/bin/filterspam
  echo '        do' >> /usr/bin/filterspam
  echo '            spamc -L spam < "$MAILDIR/cur/$f" > /dev/null' >> /usr/bin/filterspam
  echo '            rm "$MAILDIR/cur/$f"' >> /usr/bin/filterspam
  echo '        done' >> /usr/bin/filterspam
  echo '        for f in `ls $MAILDIR/new`' >> /usr/bin/filterspam
  echo '        do' >> /usr/bin/filterspam
  echo '            spamc -L spam < "$MAILDIR/new/$f" > /dev/null' >> /usr/bin/filterspam
  echo '            rm "$MAILDIR/new/$f"' >> /usr/bin/filterspam
  echo '        done' >> /usr/bin/filterspam
  echo '    fi' >> /usr/bin/filterspam
  echo 'done' >> /usr/bin/filterspam
  echo 'exit 0' >> /usr/bin/filterspam

  echo '#!/bin/bash' > /usr/bin/filterham
  echo 'for d in /home/*/ ; do' >> /usr/bin/filterham
  echo '    USERNAME=$(echo "$d" | awk -F '"'"'/'"'"' '"'"'{print $3}'"'"')' >> /usr/bin/filterham
  echo '    if [[ $USERNAME != "git" ]]; then' >> /usr/bin/filterham
  echo '        MAILDIR=/home/$USERNAME/Maildir/.learn-ham' >> /usr/bin/filterham
  echo '        if [ ! -d "$MAILDIR" ]; then' >> /usr/bin/filterham
  echo '            exit' >> /usr/bin/filterham
  echo '        fi' >> /usr/bin/filterham
  echo '        for f in `ls $MAILDIR/cur`' >> /usr/bin/filterham
  echo '        do' >> /usr/bin/filterham
  echo '            spamc -L ham < "$MAILDIR/cur/$f" > /dev/null' >> /usr/bin/filterham
  echo '            rm "$MAILDIR/cur/$f"' >> /usr/bin/filterham
  echo '        done' >> /usr/bin/filterham
  echo '        for f in `ls $MAILDIR/new`' >> /usr/bin/filterham
  echo '        do' >> /usr/bin/filterham
  echo '            spamc -L ham < "$MAILDIR/new/$f" > /dev/null' >> /usr/bin/filterham
  echo '            rm "$MAILDIR/new/$f"' >> /usr/bin/filterham
  echo '        done' >> /usr/bin/filterham
  echo '    fi' >> /usr/bin/filterham
  echo 'done' >> /usr/bin/filterham
  echo 'exit 0' >> /usr/bin/filterham

  if ! grep -q "filterspam" /etc/crontab; then
    echo "*/3 * * * * root /usr/bin/timeout 120 /usr/bin/filterspam" >> /etc/crontab
  fi
  if ! grep -q "filterham" /etc/crontab; then
    echo "*/3 * * * * root /usr/bin/timeout 120 /usr/bin/filterham" >> /etc/crontab
  fi
  chmod 655 /usr/bin/filterspam /usr/bin/filterham
  sed -i 's/# use_bayes 1/use_bayes 1/g' /etc/mail/spamassassin/local.cf
  sed -i 's/# bayes_auto_learn 1/bayes_auto_learn 1/g' /etc/mail/spamassassin/local.cf

  # user preferences
  if [ ! -d /home/$MY_USERNAME/.spamassassin ]; then
      mkdir /home/$MY_USERNAME/.spamassassin
      echo '# How many points before a mail is considered spam.' > /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# required_score        5' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# Whitelist and blacklist addresses are now file-glob-style patterns, so' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# "friend@somewhere.com", "*@isp.com", or "*.domain.net" will all work.' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# whitelist_from    someone@somewhere.com' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# Add your own customised scores for some tests below.  The default scores are' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# read from the installed spamassassin rules files, but you can override them' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# here.  To see the list of tests and their default scores, go to' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# http://spamassassin.apache.org/tests.html .' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '#' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# score SYMBOLIC_TEST_NAME n.nn' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# Speakers of Asian languages, like Chinese, Japanese and Korean, will almost' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# definitely want to uncomment the following lines.  They will switch off some' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# rules that detect 8-bit characters, which commonly trigger on mails using CJK' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# character sets, or that assume a western-style charset is in use. ' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# ' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# score HTML_COMMENT_8BITS  0' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# score UPPERCASE_25_50     0' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# score UPPERCASE_50_75     0' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# score UPPERCASE_75_100    0' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# score OBSCURED_EMAIL      0' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# Speakers of any language that uses non-English, accented characters may wish' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# to uncomment the following lines.   They turn off rules that fire on' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# misformatted messages generated by common mail apps in contravention of the' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# email RFCs.' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '' >> /home/$MY_USERNAME/.spamassassin/user_prefs
      echo '# score SUBJ_ILLEGAL_CHARS      0' >> /home/$MY_USERNAME/.spamassassin/user_prefs
  fi
  # this must be accessible by root
  chown -R $MY_USERNAME:root /home/$MY_USERNAME/.spamassassin

  service spamassassin restart
  service exim4 restart
  service cron restart

  echo 'spam_filtering' >> $COMPLETION_FILE
}

function configure_imap {
  if [[ $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  if grep -Fxq "configure_imap" $COMPLETION_FILE; then
      return
  fi

  dpkg -P dovecot-imapd
  dpkg -P dovecot-core
  apt-get -y install dovecot-imapd

  if [ ! -d /etc/dovecot ]; then
      echo "ERROR: Dovecot does not appear to have installed. $CHECK_MESSAGE"
      exit 48
  fi

  if [ ! -f /etc/ssl/certs/dovecot.dhparam ]; then
      ${PROJECT_NAME}-addcert -h dovecot --dhkey $DH_KEYLENGTH
      check_certificates dovecot
  fi
  chown root:dovecot /etc/ssl/certs/dovecot.*
  chown root:dovecot /etc/ssl/private/dovecot.*

  if [ ! -f /etc/dovecot/conf.d/10-ssl.conf ]; then
      echo 'Unable to find /etc/dovecot/conf.d/10-ssl.conf'
      exit 83629
  fi
  sed -i 's|#ssl =.*|ssl = required|g' /etc/dovecot/conf.d/10-ssl.conf
  sed -i 's|ssl = no|ssl = required|g' /etc/dovecot/conf.d/10-ssl.conf
  sed -i 's|ssl = yes|ssl = required|g' /etc/dovecot/conf.d/10-ssl.conf
  sed -i 's|#ssl_cert =.*|ssl_cert = </etc/ssl/certs/dovecot.crt|g' /etc/dovecot/conf.d/10-ssl.conf
  sed -i 's|ssl_cert =.*|ssl_cert = </etc/ssl/certs/dovecot.crt|g' /etc/dovecot/conf.d/10-ssl.conf
  sed -i 's|#ssl_key =.*|ssl_key = </etc/ssl/private/dovecot.key|g' /etc/dovecot/conf.d/10-ssl.conf
  sed -i 's|ssl_key =.*|ssl_key = </etc/ssl/private/dovecot.key|g' /etc/dovecot/conf.d/10-ssl.conf
  sed -i 's|#ssl_dh_parameters_length.*|ssl_dh_parameters_length = 2048|g' /etc/dovecot/conf.d/10-ssl.conf
  sed -i 's/#ssl_prefer_server_ciphers.*/ssl_prefer_server_ciphers = yes/g' /etc/dovecot/conf.d/10-ssl.conf
  sed -i "s|#ssl_protocols =.*|ssl_protocols = '$SSL_PROTOCOLS'|g" /etc/dovecot/conf.d/10-ssl.conf
  sed -i "s|ssl_protocols =.*|ssl_protocols = '$SSL_PROTOCOLS'|g" /etc/dovecot/conf.d/10-ssl.conf
  echo "ssl_cipher_list = '$SSL_CIPHERS'" >> /etc/dovecot/conf.d/10-ssl.conf

  if [ ! -f /etc/dovecot/conf.d/10-master.conf ]; then
      echo 'Unable to find /etc/dovecot/conf.d/10-master.conf'
      exit 49259
  fi
  sed -i 's/#process_limit =.*/process_limit = 100/g' /etc/dovecot/conf.d/10-master.conf
  sed -i 's/#default_client_limit.*/default_client_limit = 100/g' /etc/dovecot/conf.d/10-master.conf
  sed -i 's|#default_process_limit =.*|default_process_limit = 100|g' /etc/dovecot/conf.d/10-master.conf

  if [ ! -f /etc/dovecot/conf.d/10-logging.conf ]; then
      echo 'Unable to find /etc/dovecot/conf.d/10-logging.conf'
      exit 48936
  fi
  sed -i 's/#auth_verbose.*/auth_verbose = yes/g' /etc/dovecot/conf.d/10-logging.conf

  if [ ! -f /etc/dovecot/dovecot.conf ]; then
      echo 'Unable to find /etc/dovecot/dovecot.conf'
      exit 43890
  fi
  sed -i 's/#listen =.*/listen = */g' /etc/dovecot/dovecot.conf

  if [ ! -f /etc/dovecot/conf.d/10-auth.conf ]; then
      echo 'Unable to find /etc/dovecot/conf.d/10-auth.conf'
      exit 843256
  fi
  sed -i 's/#disable_plaintext_auth =.*/disable_plaintext_auth = no/g' /etc/dovecot/conf.d/10-auth.conf
  sed -i 's/auth_mechanisms =.*/auth_mechanisms = plain login/g' /etc/dovecot/conf.d/10-auth.conf

  if [ ! -f /etc/dovecot/conf.d/10-mail.conf ]; then
      echo 'Unable to find /etc/dovecot/conf.d/10-mail.conf'
      exit 42036
  fi
  sed -i 's|mail_location =.*|mail_location = maildir:~/Maildir:LAYOUT=fs|g' /etc/dovecot/conf.d/10-mail.conf

  # This long notify interval makes the system more suited for use with
  # battery powered mobile devices
  sed -i 's|#imap_idle_notify_interval =.*|imap_idle_notify_interval = 29|g' /etc/dovecot/conf.d/20-imap.conf

  if [ -f /var/lib/dovecot/ssl-parameters.dat ]; then
      rm /var/lib/dovecot/ssl-parameters.dat
  fi

  service dovecot restart
  echo 'configure_imap' >> $COMPLETION_FILE
}

function configure_imap_client_certs {
  if [[ $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  if grep -Fxq "configure_imap_client_certs" $COMPLETION_FILE; then
      return
  fi
  # http://strange.systems/certificate-based-auth-with-dovecot-sendmail/
  sed -i 's|#default_process_limit =.*|default_process_limit = 100|g' /etc/dovecot/conf.d/10-master.conf
  sed -i 's/disable_plaintext_auth =.*/disable_plaintext_auth = yes/g' /etc/dovecot/conf.d/10-auth.conf
  sed -i 's|#auth_ssl_require_client_cert =.*|auth_ssl_require_client_cert = yes|g' /etc/dovecot/conf.d/10-auth.conf
  sed -i 's|#auth_ssl_username_from_cert =.*|auth_ssl_username_from_cert = yes|g' /etc/dovecot/conf.d/10-auth.conf
  sed -i "s|#ssl_ca =.*|ssl_ca = /etc/ssl/certs/ca-$DEFAULT_DOMAIN_NAME.crt|g" /etc/dovecot/conf.d/10-ssl.conf
  sed -i 's|#ssl_cert_username_field =.*|ssl_cert_username_field = commonName|g' /etc/dovecot/conf.d/10-ssl.conf
  sed -i 's|#ssl_verify_client_cert =.*|ssl_verify_client_cert = yes|g' /etc/dovecot/conf.d/10-ssl.conf
  if ! grep -q "passdb {" /etc/dovecot/conf.d/10-auth.conf; then
    echo '' >> /etc/dovecot/conf.d/10-auth.conf
    echo 'passdb {' >> /etc/dovecot/conf.d/10-auth.conf
    echo '  driver = passwd-file' >> /etc/dovecot/conf.d/10-auth.conf
    echo '  args = /etc/dovecot/passwd-file' >> /etc/dovecot/conf.d/10-auth.conf
    echo '  deny = no' >> /etc/dovecot/conf.d/10-auth.conf
    echo '  master = no' >> /etc/dovecot/conf.d/10-auth.conf
    echo '  pass = no' >> /etc/dovecot/conf.d/10-auth.conf
    echo '}' >> /etc/dovecot/conf.d/10-auth.conf
  fi
  # make a CA cert
  if [ ! -f /etc/ssl/private/ca-$DEFAULT_DOMAIN_NAME.key ]; then
      if [[ $LETSENCRYPT_ENABLED != "yes" ]]; then
          ${PROJECT_NAME}-addcert -h $DEFAULT_DOMAIN_NAME --ca "" --dhkey $DH_KEYLENGTH
      else
          ${PROJECT_NAME}-addcert -e $DEFAULT_DOMAIN_NAME -s $LETSENCRYPT_SERVER --ca "" --dhkey $DH_KEYLENGTH
      fi
  fi
  # CA configuration
  echo '[ ca ]' > /etc/ssl/dovecot-ca.cnf
  echo "default_ca = dovecot-ca" >> /etc/ssl/dovecot-ca.cnf
  echo '' >> /etc/ssl/dovecot-ca.cnf
  echo '[ crl_ext ]' >> /etc/ssl/dovecot-ca.cnf
  echo 'authorityKeyIdentifier=keyid:always' >> /etc/ssl/dovecot-ca.cnf
  echo '' >> /etc/ssl/dovecot-ca.cnf
  echo '[ dovecot-ca ]' >> /etc/ssl/dovecot-ca.cnf
  echo 'new_certs_dir = .' >> /etc/ssl/dovecot-ca.cnf
  echo 'unique_subject = no' >> /etc/ssl/dovecot-ca.cnf
  echo "certificate = /etc/ssl/certs/ca-$DEFAULT_DOMAIN_NAME.crt" >> /etc/ssl/dovecot-ca.cnf
  echo 'database = ssldb' >> /etc/ssl/dovecot-ca.cnf
  echo "private_key = /etc/ssl/private/ca-$DEFAULT_DOMAIN_NAME.key" >> /etc/ssl/dovecot-ca.cnf
  echo 'serial = sslserial' >> /etc/ssl/dovecot-ca.cnf
  echo 'default_days = 3650' >> /etc/ssl/dovecot-ca.cnf
  echo 'default_md = sha256' >> /etc/ssl/dovecot-ca.cnf
  echo 'default_bits = 4096' >> /etc/ssl/dovecot-ca.cnf
  echo 'policy = dovecot-ca_policy' >> /etc/ssl/dovecot-ca.cnf
  echo 'x509_extensions = dovecot-ca_extensions' >> /etc/ssl/dovecot-ca.cnf
  echo '' >> /etc/ssl/dovecot-ca.cnf
  echo '[ dovecot-ca_policy ]' >> /etc/ssl/dovecot-ca.cnf
  echo 'commonName = supplied' >> /etc/ssl/dovecot-ca.cnf
  echo 'stateOrProvinceName = supplied' >> /etc/ssl/dovecot-ca.cnf
  echo 'countryName = supplied' >> /etc/ssl/dovecot-ca.cnf
  echo 'emailAddress = optional' >> /etc/ssl/dovecot-ca.cnf
  echo 'organizationName = supplied' >> /etc/ssl/dovecot-ca.cnf
  echo 'organizationalUnitName = optional' >> /etc/ssl/dovecot-ca.cnf
  echo '' >> /etc/ssl/dovecot-ca.cnf
  echo '[ dovecot-ca_extensions ]' >> /etc/ssl/dovecot-ca.cnf
  echo 'basicConstraints = CA:false' >> /etc/ssl/dovecot-ca.cnf
  echo 'subjectKeyIdentifier = hash' >> /etc/ssl/dovecot-ca.cnf
  echo 'authorityKeyIdentifier = keyid:always' >> /etc/ssl/dovecot-ca.cnf
  echo 'keyUsage = digitalSignature,keyEncipherment' >> /etc/ssl/dovecot-ca.cnf
  echo 'extendedKeyUsage = clientAuth' >> /etc/ssl/dovecot-ca.cnf
  if [ -f /etc/ssl/ssldb ]; then
      rm /etc/ssl/ssldb
  fi
  if [ -f /etc/ssl/sslserial ]; then
      rm /etc/ssl/sslserial
  fi
  touch /etc/ssl/ssldb
  echo 0001 > /etc/ssl/sslserial
  #${PROJECT_NAME}-clientcert -u $MY_USERNAME
  service dovecot restart
  echo 'configure_imap_client_certs' >> $COMPLETION_FILE
}

function create_gpg_subkey {
  if [[ $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  if grep -Fxq "create_gpg_subkey" $COMPLETION_FILE; then
      return
  fi
  apt-get -y install gnupg

  GPG_KEY_USAGE=$1
  if [[ $GPG_KEY_USAGE != "sign" && $GPG_KEY_USAGE != "auth" && $GPG_KEY_USAGE != "encrypt" ]]; then
      echo "Unknown subkey usage: $GPG_KEY_USAGE"
      echo 'Available types: sign|auth|encrypt'
      exit 14783
  fi

  KEYGRIP=$(gpg --fingerprint --fingerprint $MY_EMAIL_ADDRESS | grep fingerprint | tail -1 | cut -d= -f2 | sed -e 's/ //g')

  # Generate a GPG subkey
  # Here a 2048bit length is used to be compatible with yubikey
  echo 'Key-Type: 1' > /home/$MY_USERNAME/gpg-genkey.conf
  echo "Key-Grip: $KEYGRIP" > /home/$MY_USERNAME/gpg-genkey.conf
  echo 'Subkey-Type: 1' >> /home/$MY_USERNAME/gpg-genkey.conf
  echo 'Subkey-Length: 2048' >> /home/$MY_USERNAME/gpg-genkey.conf
  echo "subkey-Usage: $GPG_KEY_USAGE" > /home/$MY_USERNAME/gpg-genkey.conf
  echo "Name-Real:  $MY_NAME" >> /home/$MY_USERNAME/gpg-genkey.conf
  echo "Name-Email: $MY_EMAIL_ADDRESS" >> /home/$MY_USERNAME/gpg-genkey.conf
  echo "Name-Comment: $GPG_KEY_USAGE" >> /home/$MY_USERNAME/gpg-genkey.conf
  echo 'Expire-Date: 0' >> /home/$MY_USERNAME/gpg-genkey.conf
  chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/gpg-genkey.conf
  su -c "gpg --batch --gen-key /home/$MY_USERNAME/gpg-genkey.conf" - $MY_USERNAME
  shred -zu /home/$MY_USERNAME/gpg-genkey.conf
  MY_GPG_SUBKEY_ID=$(su -c "gpg --list-keys $MY_EMAIL_ADDRESS | grep 'pub '" - $MY_USERNAME | awk -F ' ' '{print $2}' | awk -F '/' '{print $2}')

  echo 'create_gpg_subkey' >> $COMPLETION_FILE
}

function gpg_key_exists {
  key_owner_username=$1
  key_search_text=$2
  if [[ $key_owner_username != "root" ]]; then
      KEY_EXISTS=$(su -c "gpg --list-keys \"${key_search_text}\"" - $key_owner_username)
  else
      KEY_EXISTS=$(gpg --list-keys "${key_search_text}")
  fi
  if [ ! "$KEY_EXISTS" ]; then
      echo "no"
      return
  fi
  if [ "$KEY_EXISTS" == *"error"* ]; then
      echo "no"
      return
  fi
  echo "yes"
}

function gpg_pubkey_from_email {
  key_owner_username=$1
  key_email_address=$2
  key_id=
  if [[ $key_owner_username != "root" ]]; then
      key_id=$(su -c "gpg --list-keys $key_email_address | grep 'pub '" - $key_owner_username | awk -F ' ' '{print $2}' | awk -F '/' '{print $2}')
  else
      key_id=$(gpg --list-keys $key_email_address | grep 'pub ' | awk -F ' ' '{print $2}' | awk -F '/' '{print $2}')
  fi
  echo $key_id
}

function configure_gpg {
  if [[ $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  if grep -Fxq "configure_gpg" $COMPLETION_FILE; then
      return
  fi
  apt-get -y install gnupg

  gpg_dir=/home/$MY_USERNAME/.gnupg

  # if gpg keys directory was previously imported from usb
  if [[ $GPG_KEYS_IMPORTED == "yes" && -d $gpg_dir ]]; then
      echo $'GPG keys were imported'
      sed -i "s|keyserver hkp://keys.gnupg.net|keyserver $GPG_KEYSERVER|g" $gpg_dir/gpg.conf
      MY_GPG_PUBLIC_KEY_ID=$(gpg_pubkey_from_email "$MY_USERNAME" "$MY_EMAIL_ADDRESS")
      if [ ${#MY_GPG_PUBLIC_KEY_ID} -lt 4 ]; then
          echo $'GPG public key ID could not be obtained'
      fi
      chown -R $MY_USERNAME:$MY_USERNAME $gpg_dir
      chmod 700 $gpg_dir
      chmod 600 $gpg_dir/*
      echo 'configure_gpg' >> $COMPLETION_FILE
      return
  fi

  if [ ! -d $gpg_dir ]; then
      mkdir $gpg_dir
      echo "keyserver $GPG_KEYSERVER" >> $gpg_dir/gpg.conf
      echo 'keyserver-options auto-key-retrieve' >> $gpg_dir/gpg.conf
  fi

  sed -i "s|keyserver hkp://keys.gnupg.net|keyserver $GPG_KEYSERVER|g" $gpg_dir/gpg.conf

  if ! grep -q "# default preferences" $gpg_dir/gpg.conf; then
      echo '' >> $gpg_dir/gpg.conf
      echo '# default preferences' >> $gpg_dir/gpg.conf
      echo 'personal-digest-preferences SHA256' >> $gpg_dir/gpg.conf
      echo 'cert-digest-algo SHA256' >> $gpg_dir/gpg.conf
      echo 'default-preference-list SHA512 SHA384 SHA256 SHA224 AES256 AES192 AES CAST5 ZLIB BZIP2 ZIP Uncompressed' >> $gpg_dir/gpg.conf
  fi

  chown -R $MY_USERNAME:$MY_USERNAME $gpg_dir
  chmod 700 $gpg_dir
  chmod 600 $gpg_dir/*

  if [[ $MY_GPG_PUBLIC_KEY && $MY_GPG_PRIVATE_KEY ]]; then
      echo $'Importing GPG keys from file'
      echo $"Public key:  $MY_GPG_PUBLIC_KEY"
      echo $"Private key: $MY_GPG_PRIVATE_KEY"

      # use your existing GPG keys which were exported
      if [ ! -f $MY_GPG_PUBLIC_KEY ]; then
          echo $"GPG public key file $MY_GPG_PUBLIC_KEY was not found"
          exit 2483
      fi
      if [ ! -f $MY_GPG_PRIVATE_KEY ]; then
          echo $"GPG private key file $MY_GPG_PRIVATE_KEY was not found"
          exit 5383
      fi
      su -c "gpg --import $MY_GPG_PUBLIC_KEY" - $MY_USERNAME
      su -c "gpg --allow-secret-key-import --import $MY_GPG_PRIVATE_KEY" - $MY_USERNAME
      KEY_EXISTS=$(gpg_key_exists "$MY_USERNAME" "$MY_EMAIL_ADDRESS")
      if [[ $KEY_EXISTS == "no" ]]; then
          echo $"The GPG key for $MY_EMAIL_ADDRESS could not be imported"
          exit 13821
      fi

      # for security ensure that the private key file doesn't linger around
      shred -zu $MY_GPG_PRIVATE_KEY
      MY_GPG_PUBLIC_KEY_ID=$(gpg_pubkey_from_email "$MY_USERNAME" "$MY_EMAIL_ADDRESS")
      if [ ${#MY_GPG_PUBLIC_KEY_ID} -lt 4 ]; then
          echo $'GPG public key ID could not be obtained'
      fi
  else
      # Generate a GPG key
      echo 'Key-Type: 1' > /home/$MY_USERNAME/gpg-genkey.conf
      echo 'Key-Length: 4096' >> /home/$MY_USERNAME/gpg-genkey.conf
      echo 'Subkey-Type: 1' >> /home/$MY_USERNAME/gpg-genkey.conf
      echo 'Subkey-Length: 4096' >> /home/$MY_USERNAME/gpg-genkey.conf
      echo "Name-Real:  $MY_NAME" >> /home/$MY_USERNAME/gpg-genkey.conf
      echo "Name-Email: $MY_EMAIL_ADDRESS" >> /home/$MY_USERNAME/gpg-genkey.conf
      echo 'Expire-Date: 0' >> /home/$MY_USERNAME/gpg-genkey.conf
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/gpg-genkey.conf
      echo $'Generating a new GPG key'
      su -c "gpg --batch --gen-key /home/$MY_USERNAME/gpg-genkey.conf" - $MY_USERNAME
      KEY_EXISTS=$(gpg_key_exists "$MY_USERNAME" "$MY_EMAIL_ADDRESS")
      if [[ $KEY_EXISTS == "no" ]]; then
          echo $"A GPG key for $MY_EMAIL_ADDRESS could not be created"
          exit 6362
      fi
      shred -zu /home/$MY_USERNAME/gpg-genkey.conf
      MY_GPG_PUBLIC_KEY_ID=$(gpg_pubkey_from_email "$MY_USERNAME" "$MY_EMAIL_ADDRESS")
      if [ ${#MY_GPG_PUBLIC_KEY_ID} -lt 4 ]; then
          echo $'GPG public key ID could not be obtained'
      fi
      MY_GPG_PUBLIC_KEY=/tmp/public_key.gpg
      su -c "gpg --output $MY_GPG_PUBLIC_KEY --armor --export $MY_GPG_PUBLIC_KEY_ID" - $MY_USERNAME

      if grep -q "configure_email" $COMPLETION_FILE; then
          if ! grep -q "Change your GPG password" /home/$MY_USERNAME/README; then
              echo '' >> /home/$MY_USERNAME/README
              echo '' >> /home/$MY_USERNAME/README
              echo 'Change your GPG password' >> /home/$MY_USERNAME/README
              echo '========================' >> /home/$MY_USERNAME/README
              echo "It's very important to add a password to your GPG key so that" >> /home/$MY_USERNAME/README
              echo "if anyone does get access to your email they still won't be able" >> /home/$MY_USERNAME/README
              echo 'to read them without knowning the GPG password.' >> /home/$MY_USERNAME/README
              echo 'You can change the it with:' >> /home/$MY_USERNAME/README
              echo '' >> /home/$MY_USERNAME/README
              echo "  gpg --edit-key $MY_GPG_PUBLIC_KEY_ID" >> /home/$MY_USERNAME/README
              echo '  passwd' >> /home/$MY_USERNAME/README
              echo '  save' >> /home/$MY_USERNAME/README
              echo '  quit' >> /home/$MY_USERNAME/README
          fi
          if ! grep -q "Publish your GPG public key" /home/$MY_USERNAME/README; then
              echo '' >> /home/$MY_USERNAME/README
              echo '' >> /home/$MY_USERNAME/README
              echo 'Publish your GPG public key' >> /home/$MY_USERNAME/README
              echo '===========================' >> /home/$MY_USERNAME/README
              echo 'So that others can send emails to you securely you should' >> /home/$MY_USERNAME/README
              echo 'publish your GPG public key with the command:' >> /home/$MY_USERNAME/README
              echo '' >> /home/$MY_USERNAME/README
              echo "  gpg --send-keys $MY_GPG_PUBLIC_KEY_ID" >> /home/$MY_USERNAME/README
          fi
          chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
          chmod 600 /home/$MY_USERNAME/README
      fi
  fi

  echo 'configure_gpg' >> $COMPLETION_FILE
}

function configure_backup_key {
  if [[ $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  if grep -Fxq "configure_backup_key" $COMPLETION_FILE; then
      return
  fi
  apt-get -y install gnupg

  BACKUP_KEY_EXISTS=$(gpg_key_exists "root" "$MY_NAME (backup key)")
  if [[ $BACKUP_KEY_EXISTS == "yes" ]]; then
      return
  fi

  # Generate a GPG key for backups
  BACKUP_KEY_EXISTS=$(gpg_key_exists "$MY_USERNAME" "$MY_NAME (backup key)")
  if [[ $BACKUP_KEY_EXISTS == "no" ]]; then
      echo 'Key-Type: 1' > /home/$MY_USERNAME/gpg-genkey.conf
      echo 'Key-Length: 4096' >> /home/$MY_USERNAME/gpg-genkey.conf
      echo 'Subkey-Type: 1' >> /home/$MY_USERNAME/gpg-genkey.conf
      echo 'Subkey-Length: 4096' >> /home/$MY_USERNAME/gpg-genkey.conf
      echo "Name-Real:  $MY_NAME" >> /home/$MY_USERNAME/gpg-genkey.conf
      echo "Name-Email: $MY_EMAIL_ADDRESS" >> /home/$MY_USERNAME/gpg-genkey.conf
      echo "Name-Comment: backup key" >> /home/$MY_USERNAME/gpg-genkey.conf
      echo 'Expire-Date: 0' >> /home/$MY_USERNAME/gpg-genkey.conf
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/gpg-genkey.conf
      echo 'Backup key does not exist. Creating it.'
      su -c "gpg --batch --gen-key /home/$MY_USERNAME/gpg-genkey.conf" - $MY_USERNAME
      shred -zu /home/$MY_USERNAME/gpg-genkey.conf
      echo 'Checking that the Backup key was created'
      BACKUP_KEY_EXISTS=$(gpg_key_exists "$MY_USERNAME" "$MY_NAME (backup key)")
      if [[ $BACKUP_KEY_EXISTS == "no" ]]; then
          echo 'Backup key could not be created'
          exit 43382
      fi
  fi
  MY_BACKUP_KEY_ID=$(su -c "gpg --list-keys \"$MY_NAME (backup key)\" | grep 'pub '" - $MY_USERNAME | awk -F ' ' '{print $2}' | awk -F '/' '{print $2}')
  echo "Backup key: $MY_BACKUP_KEY_ID"
  MY_BACKUP_KEY=/home/$MY_USERNAME/backup_key
  su -c "gpg --output ${MY_BACKUP_KEY}_public.asc --armor --export $MY_BACKUP_KEY_ID" - $MY_USERNAME
  su -c "gpg --output ${MY_BACKUP_KEY}_private.asc --armor --export-secret-key $MY_BACKUP_KEY_ID" - $MY_USERNAME
  if [ ! -f ${MY_BACKUP_KEY}_public.asc ]; then
      echo 'Public backup key could not be exported'
      exit 36829
  fi
  if [ ! -f ${MY_BACKUP_KEY}_private.asc ]; then
      echo 'Private backup key could not be exported'
      exit 29235
  fi

  # import backup key to root user
  gpg --import --import ${MY_BACKUP_KEY}_public.asc
  gpg --allow-secret-key-import --import ${MY_BACKUP_KEY}_private.asc

  shred -zu ${MY_BACKUP_KEY}_public.asc
  shred -zu ${MY_BACKUP_KEY}_private.asc

  echo 'configure_backup_key' >> $COMPLETION_FILE
}

function encrypt_incoming_email {
  # encrypts incoming mail using your GPG public key
  # so even if an attacker gains access to the data at rest they still need
  # to know your GPG key password to be able to read anything
  if [[ $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi

  # update to the next commit
  if [ -f /usr/bin/gpgit.pl ]; then
      if grep -q "gpgit commit" $COMPLETION_FILE; then
          CURRENT_GPGIT_COMMIT=$(grep "gpgit commit" $COMPLETION_FILE | awk -F ':' '{print $2}')
          if [[ "$CURRENT_GPGIT_COMMIT" != "$GPGIT_COMMIT" ]]; then
              cd $INSTALL_DIR/gpgit
              git stash
              git checkout master
              git pull
              git checkout $GPGIT_COMMIT -b $GPGIT_COMMIT
              sed -i "s/gpgit commit.*/gpgit commit:$GPGIT_COMMIT/g" $COMPLETION_FILE
              cp gpgit.pl /usr/bin/gpgit.pl
          fi
      else
          echo "gpgit commit:$GPGIT_COMMIT" >> $COMPLETION_FILE
      fi
  fi

  if grep -Fxq "encrypt_incoming_email" $COMPLETION_FILE; then
      return
  fi

  if [[ $GPG_ENCRYPT_STORED_EMAIL != "yes" ]]; then
      return
  fi

  if [ ! -f /usr/bin/gpgit.pl ]; then
      apt-get -y install git libmail-gnupg-perl
      cd $INSTALL_DIR
      git clone $GPGIT_REPO
      cd $INSTALL_DIR/gpgit
      git checkout $GPGIT_COMMIT -b $GPGIT_COMMIT
      if ! grep -q "gpgit commit" $COMPLETION_FILE; then
          echo "gpgit commit:$GPGIT_COMMIT" >> $COMPLETION_FILE
      else
          sed -i "s/gpgit commit.*/gpgit commit:$GPGIT_COMMIT/g" $COMPLETION_FILE
      fi
      cp gpgit.pl /usr/bin
  fi

  # add a procmail rule
  if ! grep -q "/usr/bin/gpgit.pl" /home/$MY_USERNAME/.procmailrc; then
      echo '' >> /home/$MY_USERNAME/.procmailrc
      echo ':0 f' >> /home/$MY_USERNAME/.procmailrc
      echo "| /usr/bin/gpgit.pl --encrypt-mode prefer-inline --inline-flatten $MY_EMAIL_ADDRESS" >> /home/$MY_USERNAME/.procmailrc
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.procmailrc
      echo '' >> /etc/skel/.procmailrc
      echo ':0 f' >> /etc/skel/.procmailrc
      echo -n '| /usr/bin/gpgit.pl --encrypt-mode prefer-inline --inline-flatten $USER@' >> /etc/skel/.procmailrc
      echo "$DEFAULT_DOMAIN_NAME" >> /etc/skel/.procmailrc
  fi
  echo 'encrypt_incoming_email' >> $COMPLETION_FILE
}

function encrypt_outgoing_email {
  # encrypts outgoing mail using your GPG public key
  # so even if an attacker gains access to the data at rest they still need
  # to know your GPG key password to be able to read sent mail
  if [[ $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  if grep -Fxq "encrypt_outgoing_email" $COMPLETION_FILE; then
      return
  fi
  if [[ $GPG_ENCRYPT_STORED_EMAIL != "yes" ]]; then
      return
  fi

  if [ ! -d /home/$MY_USERNAME/.gnupg ]; then
      return
  fi

  if [ ! -f /home/$MY_USERNAME/.muttrc ]; then
      return
  fi

  # obtain your public key ID
  if [ ! $MY_GPG_PUBLIC_KEY_ID ]; then
      MY_GPG_PUBLIC_KEY_ID=$(gpg_pubkey_from_email "$MY_USERNAME" "$MY_EMAIL_ADDRESS")
      if [ ! $MY_GPG_PUBLIC_KEY_ID ]; then
          return
      fi
      if [ ${#MY_GPG_PUBLIC_KEY_ID} -lt 4 ]; then
          return
      fi
  fi

  if ! grep -q "pgp_encrypt_only_command" /home/$MY_USERNAME/.muttrc; then
      echo '' >> /home/$MY_USERNAME/.muttrc
      echo '# Encrypt items in the Sent folder' >> /home/$MY_USERNAME/.muttrc
      echo "set pgp_encrypt_only_command=\"/usr/lib/mutt/pgpewrap gpg --batch --quiet --no-verbose --output - --encrypt --textmode --armor --always-trust --encrypt-to 0x$MY_GPG_PUBLIC_KEY_ID -- -r %r -- %f\"" >> /home/$MY_USERNAME/.muttrc
  else
      sed -i "s|set pgp_encrypt_only_command.*|set pgp_encrypt_only_command=\"/usr/lib/mutt/pgpewrap gpg --batch --quiet --no-verbose --output - --encrypt --textmode --armor --always-trust --encrypt-to 0x$MY_GPG_PUBLIC_KEY_ID -- -r %r -- %f\"|g" /home/$MY_USERNAME/.muttrc
  fi

  if ! grep -q "pgp_encrypt_sign_command" /home/$MY_USERNAME/.muttrc; then
      echo "set pgp_encrypt_sign_command=\"/usr/lib/mutt/pgpewrap gpg %?p?--passphrase-fd 0? --batch --quiet --no-verbose --textmode --output - --encrypt --sign %?a?-u %a? --armor --always-trust --encrypt-to 0x$MY_GPG_PUBLIC_KEY_ID -- -r %r -- %f\"" >> /home/$MY_USERNAME/.muttrc
  else
      sed -i "s|set pgp_encrypt_sign_command.*|set pgp_encrypt_sign_command=\"/usr/lib/mutt/pgpewrap gpg %?p?--passphrase-fd 0? --batch --quiet --no-verbose --textmode --output - --encrypt --sign %?a?-u %a? --armor --always-trust --encrypt-to 0x$MY_GPG_PUBLIC_KEY_ID -- -r %r -- %f\"|g" /home/$MY_USERNAME/.muttrc
  fi

  echo 'encrypt_outgoing_email' >> $COMPLETION_FILE
}

function encrypt_all_email {
  if [[ $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  if grep -Fxq "encrypt_all_email" $COMPLETION_FILE; then
      return
  fi
  if [[ $GPG_ENCRYPT_STORED_EMAIL != "yes" ]]; then
      return
  fi
  echo '#!/bin/bash' > /usr/bin/encmaildir
  echo '#' >> /usr/bin/encmaildir
  echo '# GPLv2' >> /usr/bin/encmaildir
  echo '# GPG Encrypt a Maildir using gpgit.pl' >> /usr/bin/encmaildir
  echo '# Oct 03, 2014' >> /usr/bin/encmaildir
  echo '#' >> /usr/bin/encmaildir
  echo '# Change log:' >> /usr/bin/encmaildir
  echo '#   Sep 03, 2011' >> /usr/bin/encmaildir
  echo '#     - Temporary file is based on file_owner to avoid' >> /usr/bin/encmaildir
  echo '#        issues with permission differences.' >> /usr/bin/encmaildir
  echo '#     - Temporary file is removed after run.' >> /usr/bin/encmaildir
  echo '#     - Optional arguments passed to "find".' >> /usr/bin/encmaildir
  echo '#     - Full paths to binaries.' >> /usr/bin/encmaildir
  echo '#     - Removed unneccessary need of "cat", "grep", etc.' >> /usr/bin/encmaildir
  echo '#   Sep 04, 2011' >> /usr/bin/encmaildir
  echo '#     - Dont remove Dovecot index/uid unless messages' >> /usr/bin/encmaildir
  echo '#       have been GPG encrypted.' >> /usr/bin/encmaildir
  echo '#     - Adjust file tests to not just use -e' >> /usr/bin/encmaildir
  echo '#     - Quote all file operations' >> /usr/bin/encmaildir
  echo '#   Sep 05, 2011' >> /usr/bin/encmaildir
  echo '#     - Dont arbitrarily copy files, only overwrite the file' >> /usr/bin/encmaildir
  echo '#       in ~/Maildir if it differs after calling gpgencmail.pl' >> /usr/bin/encmaildir
  echo '#     - Only rebuild the index if we have modified ~/Maildir' >> /usr/bin/encmaildir
  echo '#   Oct 03, 2014' >> /usr/bin/encmaildir
  echo '#     - Minor modifications for use with Freedombone' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo 'if [[ -z "$1" || -z "$2" || -z "$3" ]]; then' >> /usr/bin/encmaildir
  echo '  echo "Usage is ./encmaildir.sh    {optional arguments passed to find for messages such as -mtime 0}"' >> /usr/bin/encmaildir
  echo '  exit 0' >> /usr/bin/encmaildir
  echo 'fi' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo 'MAIL_DIR=$1' >> /usr/bin/encmaildir
  echo 'EMAIL_ADDRESS=$2' >> /usr/bin/encmaildir
  echo 'USERNAME=$3' >> /usr/bin/encmaildir
  echo 'if [ ! -d "$MAIL_DIR" ]; then' >> /usr/bin/encmaildir
  echo "  MAIL_DIR='/home/$MY_USERNAME/Maildir'" >> /usr/bin/encmaildir
  echo 'fi' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo 'if [ ! $EMAIL_ADDRESS ]; then' >> /usr/bin/encmaildir
  echo "  EMAIL_ADDRESS='$MY_EMAIL_ADDRESS'" >> /usr/bin/encmaildir
  echo 'fi' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo 'if [ ! $USERNAME ]; then' >> /usr/bin/encmaildir
  echo "  USERNAME='$MY_USERNAME'" >> /usr/bin/encmaildir
  echo 'fi' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo '# Does this key exist?' >> /usr/bin/encmaildir
  echo 'gpg --list-keys "$EMAIL_ADDRESS" > /dev/null 2>&1' >> /usr/bin/encmaildir
  echo 'if [ $? -gt 0 ]; then' >> /usr/bin/encmaildir
  echo '  echo "A GPG key for $EMAIL_ADDRESS could not be found!"' >> /usr/bin/encmaildir
  echo '  exit 0' >> /usr/bin/encmaildir
  echo 'fi' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo '# Find all files in the Maildir specified.' >> /usr/bin/encmaildir
  echo 'echo "Calling find"' >> /usr/bin/encmaildir
  echo -n 'find "$MAIL_DIR" -type f -regex ' >> /usr/bin/encmaildir
  echo -n "'.*/\(cur\|new\)/.*' " >> /usr/bin/encmaildir
  echo '$4|while read line; do' >> /usr/bin/encmaildir
  echo '     gpgit.pl --encrypt-mode prefer-inline "$EMAIL_ADDRESS"  "/tmp/msg_$USERNAME"' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo '     # Check to see if there are differences between the existing' >> /usr/bin/encmaildir
  echo '     # Maildir file and what was created by gpgit.pl' >> /usr/bin/encmaildir
  echo '     diff -qa "$line" "/tmp/msg_$USERNAME" > /dev/null 2>&1;' >> /usr/bin/encmaildir
  echo '     if [ $? -gt 0 ]; then' >> /usr/bin/encmaildir
  echo '       # Preserve timestamps, set ownership.' >> /usr/bin/encmaildir
  echo '       chown $USERNAME:$USERNAME "/tmp/msg_$USERNAME"' >> /usr/bin/encmaildir
  echo '       chmod 600   "/tmp/msg_$USERNAME"' >> /usr/bin/encmaildir
  echo '       touch   "/tmp/msg_$USERNAME" --reference="$line"' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo '       # Unlink the original Maildir message' >> /usr/bin/encmaildir
  echo '       unlink "$line"' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo '       # Strip message sizes, retain experimental flags' >> /usr/bin/encmaildir
  echo '       # and status flags, and copy the file over.' >> /usr/bin/encmaildir
  echo '       STRIPSIZES=$(/bin/echo "$line"|/bin/sed -e "s/W=[[:digit:]]*//" -e "s/S=[[:digit:]]*//" -e "s/,,//" -e "s/,:2/:2/")' >> /usr/bin/encmaildir
  echo '       cp -av "/tmp/msg_$USERNAME" "$STRIPSIZES"' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo '       #Indexes must be rebuilt, weve modified Maildir.' >> /usr/bin/encmaildir
  echo '       touch "/tmp/rebuild_index_$USERNAME"' >> /usr/bin/encmaildir
  echo '     else' >> /usr/bin/encmaildir
  echo '       echo "Not copying, no differences between /tmp/msg_$USERNAME and $line"' >> /usr/bin/encmaildir
  echo '     fi' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo '     # Remove the temporary file' >> /usr/bin/encmaildir
  echo '     unlink "/tmp/msg_$USERNAME"' >> /usr/bin/encmaildir
  echo 'done' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo '# Remove Dovecot index and uids for regeneration.' >> /usr/bin/encmaildir
  echo 'if [ -f "/tmp/rebuild_index_$USERNAME" ]; then' >> /usr/bin/encmaildir
  echo '  echo "Removing Dovecot indexes and uids"' >> /usr/bin/encmaildir
  echo -n '  find "$MAIL_DIR" -type f -regex ' >> /usr/bin/encmaildir
  echo "'.*\(dovecot-\|dovecot\.\|\.uidvalidity\).*' -delete" >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo '  # Remove the temporary file' >> /usr/bin/encmaildir
  echo '  unlink "/tmp/rebuild_index_$USERNAME"' >> /usr/bin/encmaildir
  echo 'else' >> /usr/bin/encmaildir
  echo '  echo "No messages found needing GPG encryption, not' >> /usr/bin/encmaildir
  echo '  echo "removing Dovecot indexes and UIDs."' >> /usr/bin/encmaildir
  echo 'fi' >> /usr/bin/encmaildir
  echo 'exit 0' >> /usr/bin/encmaildir
  chmod +x /usr/bin/encmaildir

  if [ ! /home/$MY_USERNAME/README ]; then
      touch /home/$MY_USERNAME/README
  fi
  if ! grep -q "If you have imported legacy email" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Encrypting legacy email' >> /home/$MY_USERNAME/README
      echo '=======================' >> /home/$MY_USERNAME/README
      echo 'If you have imported legacy email which is not encrypted' >> /home/$MY_USERNAME/README
      echo 'then it can be encrypted with the command:' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo '  encmaildir' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'But be warned that depending upon how much email you have' >> /home/$MY_USERNAME/README
      echo 'this could take a seriously LONG time on the Beaglebone' >> /home/$MY_USERNAME/README
      echo 'and may be better done on a faster machine.' >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
      chmod 600 /home/$MY_USERNAME/README
  fi

  echo 'encrypt_all_email' >> $COMPLETION_FILE
}

function email_client {
  if [[ $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  if grep -Fxq "email_client" $COMPLETION_FILE; then
      return
  fi
  apt-get -y install mutt-patched lynx abook

  if [ ! -f /etc/Muttrc ]; then
      echo "ERROR: Mutt does not appear to have installed. $CHECK_MESSAGE"
      exit 49
  fi

  if [ ! -d /home/$MY_USERNAME/.mutt ]; then
    mkdir /home/$MY_USERNAME/.mutt
  fi
  echo "text/html; lynx -dump -width=78 -nolist %s | sed ‘s/^ //’; copiousoutput; needsterminal; nametemplate=%s.html" > /home/$MY_USERNAME/.mutt/mailcap
  cp /home/$MY_USERNAME/.mutt/mailcap /etc/skel/.mutt
  chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.mutt
  chown -R root:root /etc/skel/.mutt

  echo 'set mbox_type=Maildir' >> /etc/Muttrc
  echo 'set folder="~/Maildir"' >> /etc/Muttrc
  echo 'set mask="!^\\.[^.]"' >> /etc/Muttrc
  echo 'set mbox="~/Maildir"' >> /etc/Muttrc
  echo 'set record="+Sent"' >> /etc/Muttrc
  echo 'set postponed="+Drafts"' >> /etc/Muttrc
  echo 'set trash="+Trash"' >> /etc/Muttrc
  echo 'set spoolfile="~/Maildir"' >> /etc/Muttrc
  echo 'auto_view text/x-vcard text/html text/enriched' >> /etc/Muttrc
  echo 'set editor="emacs -q --load ~/.emacs-mutt"' >> /etc/Muttrc
  echo 'set header_cache="+.cache"' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo 'macro index S "<tag-prefix><decode-save>=.learn-spam<enter>" "move to learn-spam"' >> /etc/Muttrc
  echo 'macro pager S "<decode-save>=.learn-spam<enter>" "move to learn-spam"' >> /etc/Muttrc
  echo 'macro index H "<tag-prefix><decode-copy>=.learn-ham<enter>" "copy to learn-ham"' >> /etc/Muttrc
  echo 'macro pager H "<decode-copy>=.learn-ham<enter>" "copy to learn-ham"' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# set up the sidebar' >> /etc/Muttrc
  echo 'set sidebar_width=22' >> /etc/Muttrc
  echo 'set sidebar_visible=yes' >> /etc/Muttrc
  echo "set sidebar_delim='|'" >> /etc/Muttrc
  echo 'set sidebar_sort=yes' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo 'set rfc2047_parameters' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# Show inbox and sent items' >> /etc/Muttrc
  echo 'mailboxes = =Sent =maybe-spam =spam' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# Alter these colours as needed for maximum bling' >> /etc/Muttrc
  echo 'color sidebar_new yellow default' >> /etc/Muttrc
  echo 'color normal white default' >> /etc/Muttrc
  echo 'color hdrdefault brightcyan default' >> /etc/Muttrc
  echo 'color signature green default' >> /etc/Muttrc
  echo 'color attachment brightyellow default' >> /etc/Muttrc
  echo 'color quoted green default' >> /etc/Muttrc
  echo 'color quoted1 white default' >> /etc/Muttrc
  echo 'color tilde blue default' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# ctrl-n, ctrl-p to select next, prev folder' >> /etc/Muttrc
  echo '# ctrl-o to open selected folder' >> /etc/Muttrc
  echo 'bind index \Cp sidebar-prev' >> /etc/Muttrc
  echo 'bind index \Cn sidebar-next' >> /etc/Muttrc
  echo 'bind index \Co sidebar-open' >> /etc/Muttrc
  echo 'bind pager \Cp sidebar-prev' >> /etc/Muttrc
  echo 'bind pager \Cn sidebar-next' >> /etc/Muttrc
  echo 'bind pager \Co sidebar-open' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# ctrl-b toggles sidebar visibility' >> /etc/Muttrc
  echo "macro index,pager \Cb '<enter-command>toggle sidebar_visible<enter><redraw-screen>' 'toggle sidebar'" >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# esc-m Mark new messages as read' >> /etc/Muttrc
  echo 'macro index <esc>m "T~N<enter>;WNT~O<enter>;WO\CT~T<enter>" "mark all messages read"' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# Collapsing threads' >> /etc/Muttrc
  echo 'macro index [ "<collapse-thread>" "collapse/uncollapse thread"' >> /etc/Muttrc
  echo 'macro index ] "<collapse-all>"    "collapse/uncollapse all threads"' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# threads containing new messages' >> /etc/Muttrc
  echo 'uncolor index "~(~N)"' >> /etc/Muttrc
  echo 'color index brightblue default "~(~N)"' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# new messages themselves' >> /etc/Muttrc
  echo 'uncolor index "~N"' >> /etc/Muttrc
  echo 'color index brightyellow default "~N"' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# GPG/PGP integration' >> /etc/Muttrc
  echo '# this set the number of seconds to keep in memory the passphrase used to encrypt/sign' >> /etc/Muttrc
  echo 'set pgp_timeout=1800' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# automatically sign and encrypt with PGP/MIME' >> /etc/Muttrc
  echo 'set pgp_autosign         # autosign all outgoing mails' >> /etc/Muttrc
  echo 'set pgp_autoencrypt      # Try to encrypt automatically' >> /etc/Muttrc
  echo 'set pgp_replyencrypt     # autocrypt replies to crypted' >> /etc/Muttrc
  echo 'set pgp_replysign        # autosign replies to signed' >> /etc/Muttrc
  echo 'set pgp_auto_decode=yes  # decode attachments' >> /etc/Muttrc
  echo 'set fcc_clear=no         # Keep encrypted copy of sent encrypted mail' >> /etc/Muttrc
  echo 'unset smime_is_default' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo 'set alias_file=~/.mutt-alias' >> /etc/Muttrc
  echo 'source ~/.mutt-alias' >> /etc/Muttrc
  echo 'set query_command= "abook --mutt-query \"%s\""' >> /etc/Muttrc
  echo 'macro index,pager A "<pipe-message>abook --add-email-quiet<return>" "add the sender address to abook"' >> /etc/Muttrc

  # create an Emacs configuration specifically for use with Mutt, which
  # has word wrap and spell checking on by default
  echo "(add-hook 'before-save-hook 'delete-trailing-whitespace)" > /home/$MY_USERNAME/.emacs-mutt
  echo '(setq org-support-shift-select t)' >> /home/$MY_USERNAME/.emacs-mutt
  echo '(setq standard-indent 4)' >> /home/$MY_USERNAME/.emacs-mutt
  echo '(setq-default tab-width 4)' >> /home/$MY_USERNAME/.emacs-mutt
  echo '(setq c-basic-offset 4)' >> /home/$MY_USERNAME/.emacs-mutt
  echo '(mouse-wheel-mode t)' >> /home/$MY_USERNAME/.emacs-mutt
  echo '(setq make-backup-files t)' >> /home/$MY_USERNAME/.emacs-mutt
  echo '(setq version-control t)' >> /home/$MY_USERNAME/.emacs-mutt
  echo '(setq backup-directory-alist (quote ((".*" . "~/.emacs_backups/"))))' >> /home/$MY_USERNAME/.emacs-mutt
  echo "(setq default-major-mode 'text-mode)" >> /home/$MY_USERNAME/.emacs-mutt
  echo "(dolist (hook '(text-mode-hook))" >> /home/$MY_USERNAME/.emacs-mutt
  echo '    (add-hook hook (lambda () (flyspell-mode 1))))' >> /home/$MY_USERNAME/.emacs-mutt
  echo '(setq-default fill-column 72)' >> /home/$MY_USERNAME/.emacs-mutt
  echo '(setq auto-fill-mode 0)' >> /home/$MY_USERNAME/.emacs-mutt
  echo "(add-hook 'text-mode-hook 'turn-on-auto-fill)" >> /home/$MY_USERNAME/.emacs-mutt
  echo "(setq-default auto-fill-function 'do-auto-fill)" >> /home/$MY_USERNAME/.emacs-mutt

  # add the emacs mutt configuration to the user profile skeleton
  if [ ! -f /etc/skel/.emacs-mutt ]; then
      cp /home/$MY_USERNAME/.emacs-mutt /etc/skel/.emacs-mutt
      chown root:root /etc/skel/.emacs-mutt
  fi

  cp -f /etc/Muttrc /home/$MY_USERNAME/.muttrc
  cp -f /etc/Muttrc /etc/skel/.muttrc
  touch /home/$MY_USERNAME/.mutt-alias
  cp /home/$MY_USERNAME/.mutt-alias /etc/skel/.mutt-alias
  chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.emacs-mutt
  chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.muttrc
  chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.mutt-alias

  # default user on generic images
  if [ -d /home/${GENERIC_IMAGE_USERNAME} ]; then
      cp -f /etc/Muttrc /home/${GENERIC_IMAGE_USERNAME}/.muttrc
      chown ${GENERIC_IMAGE_USERNAME}:${GENERIC_IMAGE_USERNAME} /home/${GENERIC_IMAGE_USERNAME}/.muttrc
      touch /home/${GENERIC_IMAGE_USERNAME}/.mutt-alias
      chown ${GENERIC_IMAGE_USERNAME}:${GENERIC_IMAGE_USERNAME} /home/${GENERIC_IMAGE_USERNAME}/.mutt-alias
      cp /etc/skel/.emacs-mutt /home/${GENERIC_IMAGE_USERNAME}/.emacs-mutt
      chown ${GENERIC_IMAGE_USERNAME}:${GENERIC_IMAGE_USERNAME} /home/${GENERIC_IMAGE_USERNAME}/.emacs-mutt
  fi

  echo 'email_client' >> $COMPLETION_FILE
}

function email_archiving {
  if [[ $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi

  # update to the next commit
  if [ -d $INSTALL_DIR/cleanup-maildir ]; then
      if grep -q "cleanup-maildir commit" $COMPLETION_FILE; then
          CURRENT_CLEANUP_MAILDIR_COMMIT=$(grep "cleanup-maildir commit" $COMPLETION_FILE | awk -F ':' '{print $2}')
          if [[ "$CURRENT_CLEANUP_MAILDIR_COMMIT" != "$CLEANUP_MAILDIR_COMMIT" ]]; then
              cd $INSTALL_DIR/cleanup-maildir
              git stash
              git checkout master
              git pull
              git checkout $CLEANUP_MAILDIR_COMMIT -b $CLEANUP_MAILDIR_COMMIT
              sed -i "s/cleanup-maildir commit.*/cleanup-maildir commit:$CLEANUP_MAILDIR_COMMIT/g" $COMPLETION_FILE
              cp $INSTALL_DIR/cleanup-maildir/cleanup-maildir /usr/bin
          fi
      else
          echo "cleanup-maildir commit:$CLEANUP_MAILDIR_COMMIT" >> $COMPLETION_FILE
      fi
  fi

  if grep -Fxq "email_archiving" $COMPLETION_FILE; then
      return
  fi

  if [ ! -d $INSTALL_DIR ]; then
      mkdir $INSTALL_DIR
  fi
  cd $INSTALL_DIR
  git clone $CLEANUP_MAILDIR_REPO $INSTALL_DIR/cleanup-maildir
  git checkout $CLEANUP_MAILDIR_COMMIT -b $CLEANUP_MAILDIR_COMMIT
  if ! grep -q "cleanup-maildir commit" $COMPLETION_FILE; then
      echo "cleanup-maildir commit:$CLEANUP_MAILDIR_COMMIT" >> $COMPLETION_FILE
  else
      sed -i "s/cleanup-maildir commit.*/cleanup-maildir commit:$CLEANUP_MAILDIR_COMMIT/g" $COMPLETION_FILE
  fi

  cp $INSTALL_DIR/cleanup-maildir/cleanup-maildir /usr/bin
  echo '#!/bin/bash' > /etc/cron.daily/archivemail
  echo 'for d in /home/*/ ; do' >> /etc/cron.daily/archivemail
  echo '  USERNAME=$(echo "$d" | awk -F '"'"'/'"'"' '"'"'{print $3}'"'"')' >> /etc/cron.daily/archivemail
  echo '  if [[ $USERNAME != "git" ]]; then' >> /etc/cron.daily/archivemail
  echo '    if [ -d /home/$USERNAME/Maildir ]; then' >> /etc/cron.daily/archivemail
  echo '      MUTTRC=/home/$USERNAME/.muttrc' >> /etc/cron.daily/archivemail
  echo '      python /usr/bin/cleanup-maildir --archive-folder="archive" --maildir-root="/home/$USERNAME/Maildir" archive ""' >> /etc/cron.daily/archivemail
  echo '      chown -R $USERNAME:$USERNAME /home/$USERNAME/Maildir/archive-*' >> /etc/cron.daily/archivemail
  echo '      if [ -f $MUTTRC ]; then' >> /etc/cron.daily/archivemail
  echo '        MUTT_MAILBOXES=$(grep "mailboxes =" $MUTTRC)' >> /etc/cron.daily/archivemail
  echo '        BACKUP_DIRECTORY=archive-$(date +"%Y")' >> /etc/cron.daily/archivemail
  echo '        if [[ $MUTT_MAILBOXES != *$BACKUP_DIRECTORY* ]]; then' >> /etc/cron.daily/archivemail
  echo '          sed -i "s|$MUTT_MAILBOXES|$MUTT_MAILBOXES =$BACKUP_DIRECTORY|g" $MUTTRC' >> /etc/cron.daily/archivemail
  echo '          chown $USERNAME:$USERNAME $MUTTRC' >> /etc/cron.daily/archivemail
  echo '        fi' >> /etc/cron.daily/archivemail
  echo '      fi' >> /etc/cron.daily/archivemail
  echo '    fi' >> /etc/cron.daily/archivemail
  echo '  fi' >> /etc/cron.daily/archivemail
  echo 'done' >> /etc/cron.daily/archivemail

  echo 'exit 0' >> /etc/cron.daily/archivemail
  chmod +x /etc/cron.daily/archivemail

  echo 'email_archiving' >> $COMPLETION_FILE
}

# Ensure that the from field is correct when sending email from Mutt
function email_from_address {
  if grep -Fxq "email_from_address" $COMPLETION_FILE; then
      return
  fi

  if [ ! -f /home/$MY_USERNAME/.muttrc ]; then
      return
  fi
  if grep -q "set from=" /home/$MY_USERNAME/.muttrc; then
      sed -i "s|set from=.*|set from='$MY_NAME <$MY_EMAIL_ADDRESS>'|g" /home/$MY_USERNAME/.muttrc
  else
      echo "set from='$MY_NAME <$MY_EMAIL_ADDRESS>'" >> /home/$MY_USERNAME/.muttrc
  fi

  echo 'email_from_address' >> $COMPLETION_FILE
}

function create_public_mailing_list {
  if [[ $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  if grep -Fxq "create_public_mailing_list" $COMPLETION_FILE; then
      return
  fi
  if [ ! $PUBLIC_MAILING_LIST ]; then
      return
  fi
  # does the mailing list have a separate domain name?
  if [ ! $PUBLIC_MAILING_LIST_DOMAIN_NAME ]; then
      PUBLIC_MAILING_LIST_DOMAIN_NAME=$DEFAULT_DOMAIN_NAME
  fi

  PUBLIC_MAILING_LIST_USER="mlmmj"

  apt-get -y install mlmmj
  adduser --system $PUBLIC_MAILING_LIST_USER
  addgroup $PUBLIC_MAILING_LIST_USER
  adduser $PUBLIC_MAILING_LIST_USER $PUBLIC_MAILING_LIST_USER

  echo ''
  echo "Creating the $PUBLIC_MAILING_LIST mailing list"
  echo ''

  # create the list
  mlmmj-make-ml -a -L "$PUBLIC_MAILING_LIST" -c $PUBLIC_MAILING_LIST_USER

  echo 'SYSTEM_ALIASES_PIPE_TRANSPORT = address_pipe' > /etc/exim4/conf.d/main/000_localmacros
  echo "SYSTEM_ALIASES_USER = $PUBLIC_MAILING_LIST_USER" >> /etc/exim4/conf.d/main/000_localmacros
  echo "SYSTEM_ALIASES_GROUP = $PUBLIC_MAILING_LIST_USER" >> /etc/exim4/conf.d/main/000_localmacros

  # router
  echo 'mlmmj_router:' > /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  debug_print = "R: mlmmj_router for $local_part@$domain"' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  driver = accept' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  domains = +mlmmj_domains' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  #require_files = MLMMJ_HOME/${lc::$local_part}' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  # Use this instead, if you dont want to give Exim rx rights to mlmmj spool.' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  # Exim will then spawn a new process running under the UID of "mlmmj".' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  require_files = mlmmj:MLMMJ_HOME/${lc::$local_part}' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  local_part_suffix = +*' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  local_part_suffix_optional' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  headers_remove = Delivered-To' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  headers_add = Delivered-To: $local_part$local_part_suffix@$domain' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  transport = mlmmj_transport' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj

  # transport
  echo 'mlmmj_transport:' > /etc/exim4/conf.d/transport/40_exim4-config_mlmmj
  echo '  debug_print = "T: mlmmj_transport for $local_part@$domain"' >> /etc/exim4/conf.d/transport/40_exim4-config_mlmmj
  echo '  driver = pipe' >> /etc/exim4/conf.d/transport/40_exim4-config_mlmmj
  echo '  return_path_add' >> /etc/exim4/conf.d/transport/40_exim4-config_mlmmj
  echo '  user = mlmmj' >> /etc/exim4/conf.d/transport/40_exim4-config_mlmmj
  echo '  group = mlmmj' >> /etc/exim4/conf.d/transport/40_exim4-config_mlmmj
  echo '  home_directory = MLMMJ_HOME' >> /etc/exim4/conf.d/transport/40_exim4-config_mlmmj
  echo '  current_directory = MLMMJ_HOME' >> /etc/exim4/conf.d/transport/40_exim4-config_mlmmj
  echo '  command = /usr/bin/mlmmj-receive -F -L MLMMJ_HOME/${lc:$local_part}' >> /etc/exim4/conf.d/transport/40_exim4-config_mlmmj

  if ! grep -q "MLMMJ_HOME=/var/spool/mlmmj" /etc/exim4/conf.d/main/01_exim4-config_listmacrosdefs; then
      sed -i '/MAIN CONFIGURATION SETTINGS/a\MLMMJ_HOME=/var/spool/mlmmj' /etc/exim4/conf.d/main/01_exim4-config_listmacrosdefs
  fi
  if ! grep -q "domainlist mlmmj_domains =" /etc/exim4/conf.d/main/01_exim4-config_listmacrosdefs; then
      sed -i "/MLMMJ_HOME/a\domainlist mlmmj_domains = $PUBLIC_MAILING_LIST_DOMAIN_NAME" /etc/exim4/conf.d/main/01_exim4-config_listmacrosdefs
  fi


  if ! grep -q "delay_warning_condition =" /etc/exim4/conf.d/main/01_exim4-config_listmacrosdefs; then
      sed -i '/domainlist mlmmj_domains =/a\delay_warning_condition = ${if match_domain{$domain}{+mlmmj_domains}{no}{yes}}' /etc/exim4/conf.d/main/01_exim4-config_listmacrosdefs
  fi
  if ! grep -q ": +mlmmj_domains" /etc/exim4/conf.d/main/01_exim4-config_listmacrosdefs; then
      sed -i 's/domainlist relay_to_domains = MAIN_RELAY_TO_DOMAINS/domainlist relay_to_domains = MAIN_RELAY_TO_DOMAINS : +mlmmj_domains/g' /etc/exim4/conf.d/main/01_exim4-config_listmacrosdefs
  fi

  if ! grep -q "! +mlmmj_domains" /etc/exim4/conf.d/router/200_exim4-config_primary; then
      sed -i 's/domains = ! +local_domains/domains = ! +mlmmj_domains : ! +local_domains/g' /etc/exim4/conf.d/router/200_exim4-config_primary
  fi
  newaliases
  update-exim4.conf.template -r
  update-exim4.conf
  service exim4 restart

  if ! grep -q "$PUBLIC_MAILING_LIST mailing list" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Public mailing list' >> /home/$MY_USERNAME/README
      echo '===================' >> /home/$MY_USERNAME/README
      echo "To subscribe to the $PUBLIC_MAILING_LIST mailing list send a" >> /home/$MY_USERNAME/README
      echo "cleartext email to $PUBLIC_MAILING_LIST+subscribe@$DEFAULT_DOMAIN_NAME" >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
      chmod 600 /home/$MY_USERNAME/README
  fi

  ${PROJECT_NAME}-addlist -u $MY_USERNAME -l "$PUBLIC_MAILING_LIST" -s "$PUBLIC_MAILING_LIST"

  echo 'create_public_mailing_list' >> $COMPLETION_FILE
}

function create_private_mailing_list {
  if [[ $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  # This installation doesn't work, results in ruby errors
  # There is currently no schleuder package for Debian jessie
  if grep -Fxq "create_private_mailing_list" $COMPLETION_FILE; then
      return
  fi
  if [ ! $PRIVATE_MAILING_LIST ]; then
      return
  fi
  if [[ $PRIVATE_MAILING_LIST == $MY_USERNAME ]]; then
      echo 'The name of the private mailing list should not be the'
      echo 'same as your username'
      exit 10
  fi
  if [ ! $MY_GPG_PUBLIC_KEY ]; then
      echo 'To create a private mailing list you need to specify a file'
      echo 'containing your exported GPG key within MY_GPG_PUBLIC_KEY at'
      echo 'the top of the script'
      exit 11
  fi
  apt-get -y install ruby ruby-dev ruby-gpgme libgpgme11-dev libmagic-dev
  gem install schleuder
  schleuder-fix-gem-dependencies
  schleuder-init-setup --gem
  # NOTE: this is version number sensitive and so might need changing
  ln -s /var/lib/gems/2.1.0/gems/schleuder-2.2.4 /var/lib/schleuder
  sed -i 's/#smtp_port: 25/smtp_port: 465/g' /etc/schleuder/schleuder.conf
  sed -i 's/#superadminaddr: root@localhost/superadminaddr: root@localhost' /etc/schleuder/schleuder.conf
  schleuder-newlist $PRIVATE_MAILING_LIST@$DEFAULT_DOMAIN_NAME -realname "$PRIVATE_MAILING_LIST" -adminaddress $MY_EMAIL_ADDRESS -initmember $MY_EMAIL_ADDRESS -initmemberkey $MY_GPG_PUBLIC_KEY -nointeractive
  ${PROJECT_NAME}-addemail -u $MY_USERNAME -e $PRIVATE_MAILING_LIST@$DEFAULT_DOMAIN_NAME -l $PRIVATE_MAILING_LIST

  echo 'schleuder:' > /etc/exim4/conf.d/router/550_exim4-config_schleuder
  echo '  debug_print = "R: schleuder for $local_part@$domain"' >> /etc/exim4/conf.d/router/550_exim4-config_schleuder
  echo '  driver = accept' >> /etc/exim4/conf.d/router/550_exim4-config_schleuder
  echo '  local_part_suffix_optional' >> /etc/exim4/conf.d/router/550_exim4-config_schleuder
  echo '  local_part_suffix = +* : -bounce : -sendkey' >> /etc/exim4/conf.d/router/550_exim4-config_schleuder
  echo '  domains = +local_domains' >> /etc/exim4/conf.d/router/550_exim4-config_schleuder
  echo '  user = schleuder' >> /etc/exim4/conf.d/router/550_exim4-config_schleuder
  echo '  group = schleuder' >> /etc/exim4/conf.d/router/550_exim4-config_schleuder
  echo '  require_files = schleuder:+/var/lib/schleuder/$domain/${local_part}' >> /etc/exim4/conf.d/router/550_exim4-config_schleuder
  echo '  transport = schleuder_transport' >> /etc/exim4/conf.d/router/550_exim4-config_schleuder

  echo 'schleuder_transport:' > /etc/exim4/conf.d/transport/30_exim4-config_schleuder
  echo '  debug_print = "T: schleuder_transport for $local_part@$domain"' >> /etc/exim4/conf.d/transport/30_exim4-config_schleuder
  echo '  driver = pipe' >> /etc/exim4/conf.d/transport/30_exim4-config_schleuder
  echo '  home_directory = "/var/lib/schleuder/$domain/$local_part"' >> /etc/exim4/conf.d/transport/30_exim4-config_schleuder
  echo '  command = "/usr/bin/schleuder $local_part@$domain"' >> /etc/exim4/conf.d/transport/30_exim4-config_schleuder
  chown -R schleuder:schleuder /var/lib/schleuder
  update-exim4.conf.template -r
  update-exim4.conf
  service exim4 restart
  useradd -d /var/schleuderlists -s /bin/false schleuder
  adduser Debian-exim schleuder
  usermod -a -G mail schleuder
  #exim -d -bt $PRIVATE_MAILING_LIST@$DEFAULT_DOMAIN_NAME
  echo 'create_private_mailing_list' >> $COMPLETION_FILE
}

function split_gpg_key_into_fragments {
  # split the gpg key into fragments if social key management is enabled
  if [[ $ENABLE_SOCIAL_KEY_MANAGEMENT == "yes" ]]; then
      echo 'Splitting GPG key. You may need to enter your passphrase.'
      ${PROJECT_NAME}-splitkey -u $MY_USERNAME -e $MY_EMAIL_ADDRESS --fullname "$MY_NAME"
      if [ ! -d /home/$MY_USERNAME/.gnupg_fragments ]; then
          echo 'Yhe GPG key could not be split'
          exit 86548
      fi
  fi
}

function import_email {
  if [[ $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  EMAIL_COMPLETE_MSG=$'
  *** Freedombone mailbox installation is complete ***

      Now on your internet router forward ports
     25, 587, 465, 993 and 2222 to the freedombone
'
  if grep -Fxq "import_email" $COMPLETION_FILE; then
      if [[ $SYSTEM_TYPE == "$VARIANT_MAILBOX" ]]; then
          backup_to_friends_servers
          intrusion_detection
          split_gpg_key_into_fragments
          clear
          echo ''
          echo "$EMAIL_COMPLETE_MSG"
          if [ -d $USB_MOUNT ]; then
              umount $USB_MOUNT
              rm -rf $USB_MOUNT
              echo $'            You can now remove the USB drive'
          fi
          exit 0
      fi
      return
  fi
  if [ $IMPORT_MAILDIR ]; then
      if [ -d $IMPORT_MAILDIR ]; then
          echo 'Transfering email files'
          cp -r $IMPORT_MAILDIR /home/$MY_USERNAME
          chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/Maildir
      else
          echo "Email import directory $IMPORT_MAILDIR not found"
          exit 9
      fi
  fi
  echo 'import_email' >> $COMPLETION_FILE
  if [[ $SYSTEM_TYPE == "$VARIANT_MAILBOX" ]]; then
      backup_to_friends_servers
      intrusion_detection
      split_gpg_key_into_fragments
      # unmount any attached usb drive
      clear
      echo ''
      echo "$EMAIL_COMPLETE_MSG"
      echo ''
      if [ -d $USB_MOUNT ]; then
          umount $USB_MOUNT
          rm -rf $USB_MOUNT
          echo '            You can now remove the USB drive'
      fi
      exit 0
  fi
}

function install_web_server {
  if [[ $SYSTEM_TYPE == "$VARIANT_CHAT" ]]; then
      return
  fi

  # update to the next commit
  if [ -d $INSTALL_DIR/nginx_ensite ]; then
      if grep -q "Nginx-ensite commit" $COMPLETION_FILE; then
          CURRENT_NGINX_ENSITE_COMMIT=$(grep "Nginx-ensite commit" $COMPLETION_FILE | awk -F ':' '{print $2}')
          if [[ "$CURRENT_NGINX_ENSITE_COMMIT" != "$NGINX_ENSITE_COMMIT" ]]; then
              cd /var/www/$MICROBLOG_DOMAIN_NAME/htdocs
              git stash
              git checkout master
              git pull
              git checkout $NGINX_ENSITE_COMMIT -b $NGINX_ENSITE_COMMIT
              sed -i "s/Nginx-ensite commit.*/Nginx-ensite commit:$NGINX_ENSITE_COMMIT/g" $COMPLETION_FILE
              make install
          fi
      else
          echo "Nginx-ensite commit:$NGINX_ENSITE_COMMIT" >> $COMPLETION_FILE
      fi
  fi

  if grep -Fxq "install_web_server" $COMPLETION_FILE; then
      return
  fi
  # remove apache
  apt-get -y remove --purge apache2
  if [ -d /etc/apache2 ]; then
    rm -rf /etc/apache2
  fi
  # install nginx
  apt-get -y install nginx php5-fpm git

  # limit the number of php processes
  sed -i 's/; process.max =.*/process.max = 32/g' /etc/php5/fpm/php-fpm.conf
  sed -i 's/;process_control_timeout =.*/process_control_timeout = 300/g' /etc/php5/fpm/php-fpm.conf

  if ! grep -q "pm.max_children" /etc/php5/fpm/php-fpm.conf; then
      echo 'pm.max_children = 10' >> /etc/php5/fpm/php-fpm.conf
      echo 'pm.start_servers = 2' >> /etc/php5/fpm/php-fpm.conf
      echo 'pm.min_spare_servers = 2' >> /etc/php5/fpm/php-fpm.conf
      echo 'pm.max_spare_servers = 5' >> /etc/php5/fpm/php-fpm.conf
      echo 'pm.max_requests = 50' >> /etc/php5/fpm/php-fpm.conf
  fi

  if [ ! -d /etc/nginx ]; then
      echo "ERROR: nginx does not appear to have installed. $CHECK_MESSAGE"
      exit 51
  fi

  # Nginx settings
  echo 'user www-data;' > /etc/nginx/nginx.conf
  #echo "worker_processes; $CPU_CORES" >> /etc/nginx/nginx.conf
  echo 'pid /run/nginx.pid;' >> /etc/nginx/nginx.conf
  echo '' >> /etc/nginx/nginx.conf
  echo 'events {' >> /etc/nginx/nginx.conf
  echo '        worker_connections 50;' >> /etc/nginx/nginx.conf
  echo '        # multi_accept on;' >> /etc/nginx/nginx.conf
  echo '}' >> /etc/nginx/nginx.conf
  echo '' >> /etc/nginx/nginx.conf
  echo 'http {' >> /etc/nginx/nginx.conf
  echo '        # limit the number of connections per single IP' >> /etc/nginx/nginx.conf
  echo '        limit_conn_zone $binary_remote_addr zone=conn_limit_per_ip:10m;' >> /etc/nginx/nginx.conf
  echo '' >> /etc/nginx/nginx.conf
  echo '        # limit the number of requests for a given session' >> /etc/nginx/nginx.conf
  echo '        # Note that the Owncloud web interface seems to require a rate of around 140r/s' >> /etc/nginx/nginx.conf
  echo '        limit_req_zone $binary_remote_addr zone=req_limit_per_ip:10m rate=140r/s;' >> /etc/nginx/nginx.conf
  echo '' >> /etc/nginx/nginx.conf
  echo '        # if the request body size is more than the buffer size, then the entire (or partial) request body is written into a temporary file' >> /etc/nginx/nginx.conf
  echo '        client_body_buffer_size  128k;' >> /etc/nginx/nginx.conf
  echo '' >> /etc/nginx/nginx.conf
  echo '        # headerbuffer size for the request header from client, its set for testing purpose' >> /etc/nginx/nginx.conf
  echo '        client_header_buffer_size 3m;' >> /etc/nginx/nginx.conf
  echo '' >> /etc/nginx/nginx.conf
  echo '        # maximum number and size of buffers for large headers to read from client request' >> /etc/nginx/nginx.conf
  echo '        large_client_header_buffers 4 256k;' >> /etc/nginx/nginx.conf
  echo '' >> /etc/nginx/nginx.conf
  echo '        # read timeout for the request body from client, its set for testing purpose' >> /etc/nginx/nginx.conf
  echo '        client_body_timeout   3m;' >> /etc/nginx/nginx.conf
  echo '' >> /etc/nginx/nginx.conf
  echo '        # how long to wait for the client to send a request header, its set for testing purpose' >> /etc/nginx/nginx.conf
  echo '        client_header_timeout 3m;' >> /etc/nginx/nginx.conf
  echo '' >> /etc/nginx/nginx.conf
  echo '        ##' >> /etc/nginx/nginx.conf
  echo '        # Basic Settings' >> /etc/nginx/nginx.conf
  echo '        ##' >> /etc/nginx/nginx.conf
  echo '' >> /etc/nginx/nginx.conf
  echo '        sendfile on;' >> /etc/nginx/nginx.conf
  echo '        tcp_nopush on;' >> /etc/nginx/nginx.conf
  echo '        tcp_nodelay on;' >> /etc/nginx/nginx.conf
  echo '        keepalive_timeout 65;' >> /etc/nginx/nginx.conf
  echo '        types_hash_max_size 2048;' >> /etc/nginx/nginx.conf
  echo '        server_tokens off;' >> /etc/nginx/nginx.conf
  echo '' >> /etc/nginx/nginx.conf
  echo '        # server_names_hash_bucket_size 64;' >> /etc/nginx/nginx.conf
  echo '        # server_name_in_redirect off;' >> /etc/nginx/nginx.conf
  echo '' >> /etc/nginx/nginx.conf
  echo '        include /etc/nginx/mime.types;' >> /etc/nginx/nginx.conf
  echo '        default_type application/octet-stream;' >> /etc/nginx/nginx.conf
  echo '' >> /etc/nginx/nginx.conf
  echo '        ##' >> /etc/nginx/nginx.conf
  echo '        # Logging Settings' >> /etc/nginx/nginx.conf
  echo '        ##' >> /etc/nginx/nginx.conf
  echo '' >> /etc/nginx/nginx.conf
  echo '        access_log /var/log/nginx/access.log;' >> /etc/nginx/nginx.conf
  echo '        error_log /var/log/nginx/error.log;' >> /etc/nginx/nginx.conf
  echo '' >> /etc/nginx/nginx.conf
  echo '        ###' >> /etc/nginx/nginx.conf
  echo '        # Gzip Settings' >> /etc/nginx/nginx.conf
  echo '        ##' >> /etc/nginx/nginx.conf
  echo '        gzip on;' >> /etc/nginx/nginx.conf
  echo '        gzip_disable "msie6";' >> /etc/nginx/nginx.conf
  echo '' >> /etc/nginx/nginx.conf
  echo '        # gzip_vary on;' >> /etc/nginx/nginx.conf
  echo '        # gzip_proxied any;' >> /etc/nginx/nginx.conf
  echo '        # gzip_comp_level 6;' >> /etc/nginx/nginx.conf
  echo '        # gzip_buffers 16 8k;' >> /etc/nginx/nginx.conf
  echo '        # gzip_http_version 1.1;' >> /etc/nginx/nginx.conf
  echo '        # gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;' >> /etc/nginx/nginx.conf
  echo '' >> /etc/nginx/nginx.conf
  echo '        ##' >> /etc/nginx/nginx.conf
  echo '        # Virtual Host Configs' >> /etc/nginx/nginx.conf
  echo '        ##' >> /etc/nginx/nginx.conf
  echo '' >> /etc/nginx/nginx.conf
  echo '        include /etc/nginx/conf.d/*.conf;' >> /etc/nginx/nginx.conf
  echo '        include /etc/nginx/sites-enabled/*;' >> /etc/nginx/nginx.conf
  echo '}' >> /etc/nginx/nginx.conf

  # install a script to easily enable and disable nginx virtual hosts
  if [ ! -d $INSTALL_DIR ]; then
      mkdir $INSTALL_DIR
  fi
  cd $INSTALL_DIR
  git clone $NGINX_ENSITE_REPO $INSTALL_DIR/nginx_ensite
  cd $INSTALL_DIR/nginx_ensite
  git checkout $NGINX_ENSITE_COMMIT -b $NGINX_ENSITE_COMMIT
  if ! grep -q "Nginx-ensite commit" $COMPLETION_FILE; then
      echo "Nginx-ensite commit:$NGINX_ENSITE_COMMIT" >> $COMPLETION_FILE
  else
      sed -i "s/Nginx-ensite commit.*/Nginx-ensite commit:$NGINX_ENSITE_COMMIT/g" $COMPLETION_FILE
  fi

  make install
  nginx_dissite default
  echo 'install_web_server' >> $COMPLETION_FILE
}

function configure_php {
  sed -i "s/memory_limit = 128M/memory_limit = ${MAX_PHP_MEMORY}M/g" /etc/php5/fpm/php.ini
  sed -i 's/;cgi.fix_pathinfo=1/cgi.fix_pathinfo=0/g' /etc/php5/fpm/php.ini
  sed -i "s/memory_limit = -1/memory_limit = ${MAX_PHP_MEMORY}M/g" /etc/php5/cli/php.ini
  sed -i "s/upload_max_filesize = 2M/upload_max_filesize = 50M/g" /etc/php5/fpm/php.ini
  sed -i "s/post_max_size = 8M/post_max_size = 50M/g" /etc/php5/fpm/php.ini
}

function install_mariadb {
  if grep -Fxq "install_mariadb" $COMPLETION_FILE; then
      return
  fi
  apt-get -y install python-software-properties debconf-utils
  apt-get -y install software-properties-common
  apt-get -y update

  get_mariadb_password
  if [ ! $MARIADB_PASSWORD ]; then
      if [ -f $IMAGE_PASSWORD_FILE ]; then
          MARIADB_PASSWORD="$(printf `cat $IMAGE_PASSWORD_FILE`)"
      else
          MARIADB_PASSWORD="$(openssl rand -base64 32)"
      fi
      echo "$MARIADB_PASSWORD" > $DATABASE_PASSWORD_FILE
      chmod 600 $DATABASE_PASSWORD_FILE

      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'MariaDB / MySql' >> /home/$MY_USERNAME/README
      echo '===============' >> /home/$MY_USERNAME/README
      echo "Your MariaDB password is: $MARIADB_PASSWORD" >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
      chmod 600 /home/$MY_USERNAME/README
  fi

  debconf-set-selections <<< "mariadb-server mariadb-server/root_password password $MARIADB_PASSWORD"
  debconf-set-selections <<< "mariadb-server mariadb-server/root_password_again password $MARIADB_PASSWORD"
  apt-get -y install mariadb-server
  apt-get -y remove --purge apache*
  if [ -d /etc/apache2 ]; then
      rm -rf /etc/apache2
      echo 'Removed Apache installation after MariaDB install'
  fi

  if [ ! -d /etc/mysql ]; then
      echo "ERROR: mariadb-server does not appear to have installed. $CHECK_MESSAGE"
      exit 54
  fi

  mysqladmin -u root password "$MARIADB_PASSWORD"
  echo 'install_mariadb' >> $COMPLETION_FILE
}

function backup_databases_script_header {
  if [ ! -f /usr/bin/backupdatabases ]; then
      # daily
      echo '#!/bin/sh' > /usr/bin/backupdatabases
      echo '' >> /usr/bin/backupdatabases
      echo "EMAIL='$MY_EMAIL_ADDRESS'" >> /usr/bin/backupdatabases
      echo '' >> /usr/bin/backupdatabases
      echo -n 'MYSQL_PASSWORD=$(cat ' >> /usr/bin/backupdatabases
      echo "$DATABASE_PASSWORD_FILE)" >> /usr/bin/backupdatabases
      echo 'umask 0077' >> /usr/bin/backupdatabases
      echo '' >> /usr/bin/backupdatabases
      echo '# exit if we are backing up to friends servers' >> /usr/bin/backupdatabases
      echo "if [ -f $FRIENDS_SERVERS_LIST ]; then" >> /usr/bin/backupdatabases
      echo '  exit 1' >> /usr/bin/backupdatabases
      echo 'fi' >> /usr/bin/backupdatabases
      chmod 600 /usr/bin/backupdatabases
      chmod +x /usr/bin/backupdatabases

      echo '#!/bin/sh' > /etc/cron.daily/backupdatabasesdaily
      echo '/usr/bin/backupdatabases' >> /etc/cron.daily/backupdatabasesdaily
      chmod 600 /etc/cron.daily/backupdatabasesdaily
      chmod +x /etc/cron.daily/backupdatabasesdaily

      # weekly
      echo '#!/bin/sh' > /etc/cron.weekly/backupdatabasesweekly
      echo '' >> /etc/cron.weekly/backupdatabasesweekly
      echo 'umask 0077' >> /etc/cron.weekly/backupdatabasesweekly

      chmod 600 /etc/cron.weekly/backupdatabasesweekly
      chmod +x /etc/cron.weekly/backupdatabasesweekly

      # monthly
      echo '#!/bin/sh' > /etc/cron.monthly/backupdatabasesmonthly
      echo '' >> /etc/cron.monthly/backupdatabasesmonthly
      echo 'umask 0077' >> /etc/cron.monthly/backupdatabasesmonthly

      chmod 600 /etc/cron.monthly/backupdatabasesmonthly
      chmod +x /etc/cron.monthly/backupdatabasesmonthly
  fi
}

function repair_databases_script {
  if [ -f /etc/cron.hourly/repair ]; then
      sed -i "s|/usr/bin/repairdatabase|${PROJECT_NAME}-repair-database|g" /etc/cron.hourly/repair
  fi

  if grep -Fxq "repair_databases_script" $COMPLETION_FILE; then
      return
  fi

  if [ ! -f $DATABASE_PASSWORD_FILE ]; then
      return
  fi

  echo '#!/bin/bash' > /etc/cron.hourly/repair
  echo '' >> /etc/cron.hourly/repair
  chmod 600 /etc/cron.hourly/repair
  chmod +x /etc/cron.hourly/repair

  echo 'repair_databases_script' >> $COMPLETION_FILE
}

function install_owncloud_music_app {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_DEVELOPER" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi

  if ! grep -Fxq "install_owncloud" $COMPLETION_FILE; then
      echo 'Tried to install the Owncloud music app, but Owncloud installation was not found'
      exit 9823
  fi

  # update to the next commit
  if [ -d /usr/share/owncloud/apps/music ]; then
      if grep -q "Owncloud music app commit" $COMPLETION_FILE; then
          CURRENT_OWNCLOUD_MUSIC_APP_COMMIT=$(grep "Owncloud music app commit" $COMPLETION_FILE | awk -F ':' '{print $2}')
          if [[ "$OWNCLOUD_MUSIC_APP_COMMIT" != "$OWNCLOUD_MUSIC_APP_COMMIT" ]]; then
              cd /usr/share/owncloud/apps/music
              git stash
              git checkout master
              git pull
              git checkout $OWNCLOUD_MUSIC_APP_COMMIT -b $OWNCLOUD_MUSIC_APP_COMMIT
              sed -i "s/Owncloud music app commit.*/Owncloud music app commit:$OWNCLOUD_MUSIC_APP_COMMIT/g" $COMPLETION_FILE
          fi
      else
          echo "Owncloud music app commit:$OWNCLOUD_MUSIC_APP_COMMIT" >> $COMPLETION_FILE
      fi
  fi

  if grep -Fxq "install_owncloud_music_app" $COMPLETION_FILE; then
      return
  fi

  cd /usr/share/owncloud/apps
  git clone $OWNCLOUD_MUSIC_APP_REPO Music
  cd music
  git checkout $OWNCLOUD_MUSIC_APP_COMMIT -b $OWNCLOUD_MUSIC_APP_COMMIT
  if ! grep -q "Owncloud music app commit" $COMPLETION_FILE; then
      echo "Owncloud music app commit:$OWNCLOUD_MUSIC_APP_COMMIT" >> $COMPLETION_FILE
  else
      sed -i "s/Owncloud music app commit.*/Owncloud music app commit:$OWNCLOUD_MUSIC_APP_COMMIT/g" $COMPLETION_FILE
  fi

  if grep -q "Music player in Owncloud" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Music player in Owncloud' >> /home/$MY_USERNAME/README
      echo '========================' >> /home/$MY_USERNAME/README
      echo 'To enable the music app within ouwncloud log in to the Owncloud' >> /home/$MY_USERNAME/README
      echo 'administrator account then go to Apps on the left hand dropdown' >> /home/$MY_USERNAME/README
      echo 'menu and enable the music app.  You can then log out and log back' >> /home/$MY_USERNAME/README
      echo 'in as your Owncloud user and select music from the left hand' >> /home/$MY_USERNAME/README
      echo 'dropdown menu.' >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
      chmod 600 /home/$MY_USERNAME/README
  fi

  echo 'install_owncloud_music_app' >> $COMPLETION_FILE
}

function add_ddns_domain {
  if [ ! $CURRENT_DDNS_DOMAIN ]; then
      echo 'ddns domain not specified'
      exit 5638
  fi
  if [ ! -f /etc/inadyn.conf ]; then
      echo 'Unable to find inadyn configuration file /etc/inadyn.conf'
      exit 5745
  fi
  if ! grep -q "$DDNS_PROVIDER" /etc/inadyn.conf; then
      echo '' >> /etc/inadyn.conf
      echo "system $DDNS_PROVIDER" >> /etc/inadyn.conf
      echo '  ssl' >> /etc/inadyn.conf
      echo "  checkip-url $GET_IP_ADDRESS_URL /" >> /etc/inadyn.conf
      if [ $DDNS_USERNAME ]; then
          echo "  username $DDNS_USERNAME" >> /etc/inadyn.conf
      fi
      if [ $DDNS_PASSWORD ]; then
          echo "  password $DDNS_PASSWORD" >> /etc/inadyn.conf
      fi
  fi

  if ! grep -q "$CURRENT_DDNS_DOMAIN" /etc/inadyn.conf; then
      echo "  alias $CURRENT_DDNS_DOMAIN" >> /etc/inadyn.conf
  fi
  chmod 600 /etc/inadyn.conf
  service inadyn restart
  systemctl daemon-reload

  # clear the arguments
  CURRENT_DDNS_DOMAIN=
}

function install_owncloud {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_DEVELOPER" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  OWNCLOUD_COMPLETION_MSG1=" *** Freedombone $SYSTEM_TYPE is now installed ***"
  OWNCLOUD_COMPLETION_MSG2="Open $OWNCLOUD_DOMAIN_NAME in a web browser to complete the setup"
  if grep -Fxq "install_owncloud" $COMPLETION_FILE; then
      if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" ]]; then
          install_owncloud_music_app
          backup_to_friends_servers
          intrusion_detection
          split_gpg_key_into_fragments
          # unmount any attached usb drive
          if [ -d $USB_MOUNT ]; then
              umount $USB_MOUNT
              rm -rf $USB_MOUNT
          fi
          echo ''
          echo "$OWNCLOUD_COMPLETION_MSG1"
          echo "$OWNCLOUD_COMPLETION_MSG2"
          exit 0
      fi
      return
  fi
  # if this is exclusively a cloud setup
  if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" ]]; then
      if [ ! $DEFAULT_DOMAIN_NAME ]; then
          echo 'No default domain name when installing cloud variant'
          exit 5380
      fi
  fi
  if [ ! $OWNCLOUD_DOMAIN_NAME ]; then
      echo 'No Owncloud domain name was specified'
      exit 3095
  fi
  if [[ $SYSTEM_TYPE != "$VARIANT_CLOUD" ]]; then
      if [[ $SYSTEM_TYPE != "$VARIANT_FULL" ]]; then
          echo "Owncloud install did not recognise the system type $SYSTEM_TYPE"
          exit 6746
      fi
  fi
  apt-get -y install owncloud
  apt-get -y remove --purge apache*
  if [ -d /etc/apache2 ]; then
      rm -rf /etc/apache2
      echo 'Removed Apache installation after Owncloud install'
  fi
  install_mariadb
  get_mariadb_password

  get_mariadb_owncloud_admin_password
  if [ ! $OWNCLOUD_ADMIN_PASSWORD ]; then
      if [ -f $IMAGE_PASSWORD_FILE ]; then
          OWNCLOUD_ADMIN_PASSWORD="$(printf `cat $IMAGE_PASSWORD_FILE`)"
      else
          OWNCLOUD_ADMIN_PASSWORD="$(openssl rand -base64 32)"
      fi
  fi

  if ! grep -q "Owncloud database user" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Owncloud' >> /home/$MY_USERNAME/README
      echo '========' >> /home/$MY_USERNAME/README
      echo 'Owncloud database user: owncloudadmin' >> /home/$MY_USERNAME/README
      echo "Owncloud database password: $OWNCLOUD_ADMIN_PASSWORD" >> /home/$MY_USERNAME/README
      echo 'Owncloud database name: owncloud' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'After creating an administrator account then create a user account via' >> /home/$MY_USERNAME/README
      echo "the Users dropdown menu entry. The username should be '$MY_USERNAME'." >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'On mobile devices you can download the Owncloud client via F-Droid.' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'To synchronise calendar entries with Android "install CalDAV Sync Adapter"' >> /home/$MY_USERNAME/README
      echo 'using F-Droid then go to settings/accounts and add a CalDav account with' >> /home/$MY_USERNAME/README
      echo "the URL https://$OWNCLOUD_DOMAIN_NAME/remote.php/caldav/principals/$MY_USERNAME" >> /home/$MY_USERNAME/README
      echo 'and the username and password shown above.' >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
      chmod 600 /home/$MY_USERNAME/README
  fi

  echo "create database owncloud;
CREATE USER 'owncloudadmin'@'localhost' IDENTIFIED BY '$OWNCLOUD_ADMIN_PASSWORD';
GRANT ALL PRIVILEGES ON owncloud.* TO 'owncloudadmin'@'localhost';
quit" > $INSTALL_DIR/batch.sql
  chmod 600 $INSTALL_DIR/batch.sql
  mysql -u root --password="$MARIADB_PASSWORD" < $INSTALL_DIR/batch.sql
  shred -zu $INSTALL_DIR/batch.sql

  if [ ! -d /var/www/$OWNCLOUD_DOMAIN_NAME ]; then
      mkdir /var/www/$OWNCLOUD_DOMAIN_NAME
  fi
  if [ -d /var/www/$OWNCLOUD_DOMAIN_NAME/htdocs ]; then
      rm -rf /var/www/$OWNCLOUD_DOMAIN_NAME/htdocs
  fi

  ln -s /usr/share/owncloud /var/www/$OWNCLOUD_DOMAIN_NAME/htdocs

  echo 'server {' > /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    listen 80;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "    server_name $OWNCLOUD_DOMAIN_NAME;" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    access_log off;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "    error_log /var/log/nginx/${OWNCLOUD_DOMAIN_NAME}_error.log $WEBSERVER_LOG_LEVEL;" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    limit_conn conn_limit_per_ip 10;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    limit_req zone=req_limit_per_ip burst=10 nodelay;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    rewrite ^ https://$server_name$request_uri? permanent;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo 'server {' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    listen 443 ssl;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "    root /var/www/$OWNCLOUD_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "    server_name $OWNCLOUD_DOMAIN_NAME;" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    access_log off;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "    error_log /var/log/nginx/${OWNCLOUD_DOMAIN_NAME}_error.log $WEBSERVER_LOG_LEVEL;" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    limit_conn conn_limit_per_ip 10;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    limit_req zone=req_limit_per_ip burst=10 nodelay;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    ssl on;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "    ssl_certificate /etc/ssl/certs/$OWNCLOUD_DOMAIN_NAME.crt;" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "    ssl_certificate_key /etc/ssl/private/$OWNCLOUD_DOMAIN_NAME.key;" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "    ssl_dhparam /etc/ssl/certs/$OWNCLOUD_DOMAIN_NAME.dhparam;" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    ssl_session_timeout 60m;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    ssl_prefer_server_ciphers on;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "    ssl_protocols $SSL_PROTOCOLS; # not possible to do exclusive" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "    ssl_ciphers '$SSL_CIPHERS';" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    add_header X-Frame-Options DENY;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    add_header X-Content-Type-Options nosniff;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    add_header Strict-Transport-Security max-age=15768000;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    # if you want to be able to access the site via HTTP' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    # then replace the above with the following:' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    # add_header Strict-Transport-Security "max-age=0;";' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "    # make sure webfinger and other well known services aren't blocked" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    # by denying dot files and rewrite request to the front controller' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    location ^~ /.well-known/ {' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        allow all;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    client_max_body_size 10G; # set max upload size' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    client_body_buffer_size 128k;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    fastcgi_buffers 64 4K;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    rewrite ^/caldav(.*)$ /remote.php/caldav$1 redirect;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    rewrite ^/carddav(.*)$ /remote.php/carddav$1 redirect;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    rewrite ^/webdav(.*)$ /remote.php/webdav$1 redirect;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    index index.php;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    error_page 403 /core/templates/403.php;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    error_page 404 /core/templates/404.php;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    location = /robots.txt {' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        allow all;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        log_not_found off;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        access_log off;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    location ~ ^/(data|config|\.ht|db_structure\.xml|README) {' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    location / {' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        # The following 2 rules are only needed with webfinger' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        rewrite ^/.well-known/host-meta /public.php?service=host-meta last;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        rewrite ^/.well-known/host-meta.json /public.php?service=host-meta-json last;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        rewrite ^/.well-known/carddav /remote.php/carddav/ redirect;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        rewrite ^/.well-known/caldav /remote.php/caldav/ redirect;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        rewrite ^(/core/doc/[^\/]+/)$ $1/index.html;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        try_files $uri $uri/ index.php;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    location ~ ^(.+?\.php)(/.*)?$ {' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        try_files $1 =404;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        fastcgi_split_path_info ^(.+\.php)(/.+)$;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        fastcgi_pass unix:/var/run/php5-fpm.sock;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        fastcgi_index index.php;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        include fastcgi_params;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        fastcgi_param SCRIPT_FILENAME $document_root$1;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        fastcgi_param PATH_INFO $2;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        fastcgi_param HTTPS on;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    # Optional: set long EXPIRES header on static assets' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    location ~* ^.+\.(jpg|jpeg|gif|bmp|ico|png|css|js|swf)$ {' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        expires 30d;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "        # Optional: Don't log access to assets" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        access_log off;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME

  configure_php

  if [ ! -f /etc/ssl/certs/$OWNCLOUD_DOMAIN_NAME.dhparam ]; then
      if [[ $LETSENCRYPT_ENABLED != "yes" ]]; then
          ${PROJECT_NAME}-addcert -h $OWNCLOUD_DOMAIN_NAME --dhkey $DH_KEYLENGTH
      else
          ${PROJECT_NAME}-addcert -e $OWNCLOUD_DOMAIN_NAME -s $LETSENCRYPT_SERVER --dhkey $DH_KEYLENGTH
      fi
      check_certificates $OWNCLOUD_DOMAIN_NAME
  fi

  # Ensure that the database gets backed up locally, if remote
  # backups are not being used
  backup_databases_script_header
  echo '' >> /usr/bin/backupdatabases
  echo '# Backup Owncloud database' >> /usr/bin/backupdatabases
  echo 'TEMPFILE=/root/owncloud.sql' >> /usr/bin/backupdatabases
  echo 'DAILYFILE=/var/backups/owncloud_daily.sql' >> /usr/bin/backupdatabases
  echo 'mysqldump --password="$MYSQL_PASSWORD" owncloud > $TEMPFILE' >> /usr/bin/backupdatabases
  echo 'FILESIZE=$(stat -c%s $TEMPFILE)' >> /usr/bin/backupdatabases
  echo 'if [ "$FILESIZE" -eq "0" ]; then' >> /usr/bin/backupdatabases
  echo '    if [ -f $DAILYFILE ]; then' >> /usr/bin/backupdatabases
  echo '        cp $DAILYFILE $TEMPFILE' >> /usr/bin/backupdatabases
  echo '' >> /usr/bin/backupdatabases
  echo '        # try to restore yesterdays database' >> /usr/bin/backupdatabases
  echo '        mysql -u root --password="$MYSQL_PASSWORD" owncloud -o < $DAILYFILE' >> /usr/bin/backupdatabases
  echo '' >> /usr/bin/backupdatabases
  echo '        # Send a warning email' >> /usr/bin/backupdatabases
  echo '        echo "Unable to create a backup of the Owncloud database. Attempted to restore from yesterdays backup" | mail -s "Owncloud backup" $EMAIL' >> /usr/bin/backupdatabases
  echo '    else' >> /usr/bin/backupdatabases
  echo '        # Send a warning email' >> /usr/bin/backupdatabases
  echo '        echo "Unable to create a backup of the Owncloud database." | mail -s "Owncloud backup" $EMAIL' >> /usr/bin/backupdatabases
  echo '    fi' >> /usr/bin/backupdatabases
  echo 'else' >> /usr/bin/backupdatabases
  echo '    chmod 600 $TEMPFILE' >> /usr/bin/backupdatabases
  echo '    mv $TEMPFILE $DAILYFILE' >> /usr/bin/backupdatabases
  echo '' >> /usr/bin/backupdatabases
  echo '    # Make the backup readable only by root' >> /usr/bin/backupdatabases
  echo '    chmod 600 $DAILYFILE' >> /usr/bin/backupdatabases
  echo 'fi' >> /usr/bin/backupdatabases

  nginx_ensite $OWNCLOUD_DOMAIN_NAME
  service php5-fpm restart
  service nginx restart

  # update the dynamic DNS
  CURRENT_DDNS_DOMAIN=$OWNCLOUD_DOMAIN_NAME
  add_ddns_domain

  echo "Owncloud domain:$$OWNCLOUD_DOMAIN_NAME" >> $COMPLETION_FILE
  echo 'install_owncloud' >> $COMPLETION_FILE

  if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" ]]; then
      install_owncloud_music_app
      backup_to_friends_servers
      intrusion_detection
      split_gpg_key_into_fragments
      # unmount any attached usb drive
      if [ -d $USB_MOUNT ]; then
          umount $USB_MOUNT
          rm -rf $USB_MOUNT
      fi
      echo ''
      echo "$OWNCLOUD_COMPLETION_MSG1"
      echo "$OWNCLOUD_COMPLETION_MSG2"
      exit 0
  fi
}

function install_gogs {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  if [ ! $GIT_DOMAIN_NAME ]; then
      return
  fi

  export GOPATH=/home/git/go

  # update to the next commit
  if [ -d /var/www/$GIT_DOMAIN_NAME/htdocs ]; then
      if grep -q "Gogs commit" $COMPLETION_FILE; then
          CURRENT_GOGS_COMMIT=$(grep "Gogs commit" $COMPLETION_FILE | awk -F ':' '{print $2}')
          if [[ "$CURRENT_GOGS_COMMIT" != "$GOGS_COMMIT" ]]; then
              cd /var/www/$GIT_DOMAIN_NAME/htdocs
              git stash
              git checkout master
              git pull
              git checkout $GOGS_COMMIT -b $GOGS_COMMIT
              sed -i "s/Gogs commit.*/Gogs commit:$GOGS_COMMIT/g" $COMPLETION_FILE
              chown -R www-data:www-data /var/www/$GIT_DOMAIN_NAME/htdocs
              cd $GOPATH/src/github.com/gogits/gogs
              go get -u ./...
              go build
              systemctl restart gogs
          fi
      else
          echo "Gogs commit:$GOGS_COMMIT" >> $COMPLETION_FILE
      fi
  fi

  if grep -Fxq "install_gogs" $COMPLETION_FILE; then
      return
  fi

  # http://gogs.io/docs/installation/install_from_source.md

  # add a gogs user account
  adduser --disabled-login --gecos 'Gogs' git

  # install Go
  apt-get -y install golang libpam0g-dev
  if ! grep -q "export GOPATH=/home/git/go" ~/.bashrc; then
      echo 'export GOPATH=/home/git/go' >> ~/.bashrc
      echo 'systemctl set-environment GOPATH=/home/git/go' >> ~/.bashrc
  fi
  . ~/.bashrc
  if [ ! -d $GOPATH ]; then
      mkdir -p $GOPATH
  fi
  go get -u github.com/gpmgo/gopm
  if [ ! "$?" = "0" ]; then
      exit 479832
  fi

  # clone the repo
  if [ ! -d $GOPATH/src/github.com/gogits ]; then
      mkdir -p $GOPATH/src/github.com/gogits
  fi
  cd $GOPATH/src/github.com/gogits
  git clone $GIT_DOMAIN_REPO
  cd gogs
  git checkout $GOGS_COMMIT -b $GOGS_COMMIT
  if ! grep -q "Gogs commit" $COMPLETION_FILE; then
      echo "Gogs commit:$GOGS_COMMIT" >> $COMPLETION_FILE
  else
      sed -i "s/Gogs commit.*/Gogs commit:$GOGS_COMMIT/g" $COMPLETION_FILE
  fi

  # install
  go get -u ./...
  go build
  if [ ! "$?" = "0" ]; then
      exit 546750
  fi

  install_mariadb
  get_mariadb_password

  get_mariadb_git_admin_password
  if [ ! $GIT_ADMIN_PASSWORD ]; then
      if [ -f $IMAGE_PASSWORD_FILE ]; then
          GIT_ADMIN_PASSWORD="$(printf `cat $IMAGE_PASSWORD_FILE`)"
      else
          GIT_ADMIN_PASSWORD="$(openssl rand -base64 32)"
      fi
  fi

  if ! grep -q "Gogs admin user password" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Gogs' >> /home/$MY_USERNAME/README
      echo '====' >> /home/$MY_USERNAME/README
      echo 'Database type: MySql' >> /home/$MY_USERNAME/README
      echo 'Database host: 127.0.0.1:3306' >> /home/$MY_USERNAME/README
      echo 'Database user: root' >> /home/$MY_USERNAME/README
      echo "Database password: $MARIADB_PASSWORD" >> /home/$MY_USERNAME/README
      echo 'Database name: gogs' >> /home/$MY_USERNAME/README
      echo 'Gogs admin user: gogsadmin' >> /home/$MY_USERNAME/README
      echo "Gogs admin user password: $GIT_ADMIN_PASSWORD" >> /home/$MY_USERNAME/README
      echo "Gogs admin user email: $MY_EMAIL_ADDRESS" >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Install Steps For First-time Run:' >> /home/$MY_USERNAME/README
      echo 'Leave email service settings empty' >> /home/$MY_USERNAME/README
      echo 'Check "Enable Register Confirmation"' >> /home/$MY_USERNAME/README
      echo 'Check "Enable Mail Notification"' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'After the initial install edit /home/git/go/src/github.com/gogits/gogs/custom/conf/app.ini' >> /home/$MY_USERNAME/README
      echo 'and within the [server] section set:' >> /home/$MY_USERNAME/README
      echo "  DOMAIN = $GIT_DOMAIN_NAME" >> /home/$MY_USERNAME/README
      echo "  ROOT_URL = http://$GIT_DOMAIN_NAME/" >> /home/$MY_USERNAME/README
      echo "  SSH_PORT = $SSH_PORT" >> /home/$MY_USERNAME/README
      echo 'If you want to disable new account registrations then append the following:' >> /home/$MY_USERNAME/README
      echo '  [service]' >> /home/$MY_USERNAME/README
      echo '  DISABLE_REGISTRATION = true' >> /home/$MY_USERNAME/README
      echo 'Then restart with:' >> /home/$MY_USERNAME/README
      echo '  systemctl restart gogs' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo "Note that there's a usability/security trade-off made here." >> /home/$MY_USERNAME/README
      echo "In order to allow git clone via http we don't redirect everything" >> /home/$MY_USERNAME/README
      echo 'over https. Instead only critical things such as user login,' >> /home/$MY_USERNAME/README
      echo 'settings and admin are encrypted.' >> /home/$MY_USERNAME/README
      echo 'There are also potential security issues with cloning/pulling/pushing' >> /home/$MY_USERNAME/README
      echo 'code over http, since a determined adversary could inject malware' >> /home/$MY_USERNAME/README
      echo 'into the stream as it passes, so beware.' >> /home/$MY_USERNAME/README
      echo 'If you have a bought domain and a non-self signed cert then you' >> /home/$MY_USERNAME/README
      echo "should change /etc/nginx/sites-available/$GIT_DOMAIN_NAME to redirect everything over https." >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
      chmod 600 /home/$MY_USERNAME/README
  fi

  echo "create database gogs;
CREATE USER 'gogsadmin'@'localhost' IDENTIFIED BY '$GOGS_ADMIN_PASSWORD';
GRANT ALL PRIVILEGES ON gogs.* TO 'gogsadmin'@'localhost';
quit" > $INSTALL_DIR/batch.sql
  chmod 600 $INSTALL_DIR/batch.sql
  mysql -u root --password="$MARIADB_PASSWORD" < $INSTALL_DIR/batch.sql
  shred -zu $INSTALL_DIR/batch.sql

  chmod 600 /home/git/go/src/github.com/gogits/gogs/custom/conf/app.ini

  chown -R git:git /home/git
  cp $GOPATH/src/github.com/gogits/gogs/scripts/systemd/gogs.service /etc/systemd/system
  sed -i 's|#After=mysqld.service|After=mysqld.service|g' /etc/systemd/system/gogs.service
  sed -i "s|WorkingDirectory=.*|WorkingDirectory=$GOPATH/src/github.com/gogits/gogs|g" /etc/systemd/system/gogs.service
  sed -i "s|ExecStart=.*|ExecStart=$GOPATH/src/github.com/gogits/gogs/gogs web|g" /etc/systemd/system/gogs.service
  sed -i "s|Environment.*|Environment=\"USER=git\" \"HOME=/home/git\" \"GOPATH=/home/git/go\"|g" /etc/systemd/system/gogs.service
  systemctl enable gogs
  systemctl daemon-reload
  systemctl restart gogs

  if [ ! -d /var/www/$GIT_DOMAIN_NAME ]; then
      mkdir /var/www/$GIT_DOMAIN_NAME
  fi
  if [ -d /var/www/$GIT_DOMAIN_NAME/htdocs ]; then
      rm -rf /var/www/$GIT_DOMAIN_NAME/htdocs
  fi

  echo 'server {' > /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    listen 80;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo "    server_name $GIT_DOMAIN_NAME;" >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    access_log off;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo "    error_log /var/log/nginx/${GIT_DOMAIN_NAME}_error.log $WEBSERVER_LOG_LEVEL;" >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    limit_conn conn_limit_per_ip 10;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    limit_req zone=req_limit_per_ip burst=10 nodelay;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    location / {' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '        proxy_pass http://localhost:3000;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    location ^~ /user/ {' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '        rewrite ^ https://$server_name$request_uri?;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    location ^~ /admin/ {' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '        rewrite ^ https://$server_name$request_uri?;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo 'server {' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    listen 443 ssl;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo "    root /var/www/$GIT_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo "    server_name $GIT_DOMAIN_NAME;" >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    access_log off;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo "    error_log /var/log/nginx/${GIT_DOMAIN_NAME}_error.log $WEBSERVER_LOG_LEVEL;" >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    limit_conn conn_limit_per_ip 10;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    limit_req zone=req_limit_per_ip burst=10 nodelay;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    ssl on;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo "    ssl_certificate /etc/ssl/certs/$GIT_DOMAIN_NAME.crt;" >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo "    ssl_certificate_key /etc/ssl/private/$GIT_DOMAIN_NAME.key;" >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo "    ssl_dhparam /etc/ssl/certs/$GIT_DOMAIN_NAME.dhparam;" >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    ssl_session_timeout 60m;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    ssl_prefer_server_ciphers on;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo "    ssl_protocols $SSL_PROTOCOLS; # not possible to do exclusive" >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo "    ssl_ciphers '$SSL_CIPHERS';" >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    add_header X-Frame-Options DENY;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    add_header X-Content-Type-Options nosniff;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    add_header Strict-Transport-Security max-age=0;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    location / {' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '        proxy_pass http://localhost:3000;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    client_max_body_size 10G; # set max upload size' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    client_body_buffer_size 128k;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    fastcgi_buffers 64 4K;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    error_page 403 /core/templates/403.php;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    error_page 404 /core/templates/404.php;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    location = /robots.txt {' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '        allow all;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '        log_not_found off;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '        access_log off;' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$GIT_DOMAIN_NAME

  configure_php

  if [ ! -f /etc/ssl/certs/$GIT_DOMAIN_NAME.dhparam ]; then
      if [[ $LETSENCRYPT_ENABLED != "yes" ]]; then
          ${PROJECT_NAME}-addcert -h $GIT_DOMAIN_NAME --dhkey $DH_KEYLENGTH
      else
          ${PROJECT_NAME}-addcert -e $GIT_DOMAIN_NAME -s $LETSENCRYPT_SERVER --dhkey $DH_KEYLENGTH
      fi
      check_certificates $GIT_DOMAIN_NAME
  fi

  nginx_ensite $GIT_DOMAIN_NAME
  service php5-fpm restart
  service nginx restart

  # update the dynamic DNS
  CURRENT_DDNS_DOMAIN=$GIT_DOMAIN_NAME
  add_ddns_domain

  echo "Gogs domain:$GIT_DOMAIN_NAME" >> $COMPLETION_FILE
  echo 'install_gogs' >> $COMPLETION_FILE
}

function tox_avahi {
  if [[ $SYSTEM_TYPE != "$VARIANT_MESH" ]]; then
      return
  fi
  if grep -Fxq "tox_avahi" $COMPLETION_FILE; then
      return
  fi

  if [ ! -d /etc/avahi ]; then
      echo 'tox_avahi: avahi is not installed'
      exit 87359
  fi

  # install a command to obtain the Tox ID
  cd $INSTALL_DIR
  git clone https://github.com/bashrc/toxid
  if [ ! -d $INSTALL_DIR/toxid ]; then
      exit 63921
  fi
  cd $INSTALL_DIR/toxid
  make
  if [ ! "$?" = "0" ]; then
      exit 58432
  fi
  make install

  toxavahi

  # publish regularly
  if ! grep -q "toxavahi" /etc/crontab; then
      echo "* *     * * *   root    toxavahi > /dev/null" >> /etc/crontab
  fi

  systemctl restart avahi-daemon

  echo 'tox_avahi' >> $COMPLETION_FILE
}

function install_tox_node {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_DEVELOPER" ]]; then
      return
  fi

  # update to the next commit
  if [ -d $INSTALL_DIR/toxcore ]; then
      if grep -q "toxcore commit" $COMPLETION_FILE; then
          CURRENT_TOX_COMMIT=$(grep "toxcore commit" $COMPLETION_FILE | awk -F ':' '{print $2}')
          if [[ "$CURRENT_TOX_COMMIT" != "$TOX_COMMIT" ]]; then
              cd $INSTALL_DIR/toxcore
              git stash
              git checkout master
              git pull
              git checkout $TOX_COMMIT -b $TOX_COMMIT
              sed -i "s/toxcore commit.*/toxcore commit:$TOX_COMMIT/g" $COMPLETION_FILE
              autoreconf -i
              ./configure --enable-daemon
              make
              make install
              systemctl restart tox-bootstrapd.service
          fi
      else
          echo "toxcore commit:$TOX_COMMIT" >> $COMPLETION_FILE
      fi
  fi

  if grep -Fxq "install_tox_node" $COMPLETION_FILE; then
      return
  fi

  # toxcore
  apt-get -y install build-essential libtool autotools-dev
  apt-get -y install automake checkinstall check git yasm
  apt-get -y install libsodium13 libsodium-dev libcap2-bin
  apt-get -y install libconfig9 libconfig-dev

  cd $INSTALL_DIR
  git clone $TOX_REPO
  cd $INSTALL_DIR/toxcore

  git checkout $TOX_COMMIT -b $TOX_COMMIT
  if ! grep -q "toxcore commit" $COMPLETION_FILE; then
      echo "toxcore commit:$TOX_COMMIT" >> $COMPLETION_FILE
  else
      sed -i "s/toxcore commit.*/toxcore commit:$TOX_COMMIT/g" $COMPLETION_FILE
  fi

  autoreconf -i
  ./configure --enable-daemon
  if [ ! "$?" = "0" ]; then
      exit 78467
  fi
  make
  if [ ! "$?" = "0" ]; then
      exit 84562
  fi
  make install
  cp /usr/local/lib/libtoxcore* /usr/lib/

  if [ ! -f /usr/local/bin/tox-bootstrapd ]; then
      echo "File not found /usr/local/bin/tox-bootstrapd"
      exit 73862
  fi

  useradd --home-dir /var/lib/tox-bootstrapd --create-home --system --shell /sbin/nologin --comment "Account to run Tox's DHT bootstrap daemon" --user-group tox-bootstrapd
  chmod 700 /var/lib/tox-bootstrapd
  if [ ! -f $INSTALL_DIR/toxcore/other/bootstrap_daemon/tox-bootstrapd.conf ]; then
      echo "File not found $INSTALL_DIR/toxcore/other/bootstrap_daemon/tox-bootstrapd.conf"
      exit 476835
  fi
  # remove Maildir
  if [ -d /var/lib/tox-bootstrapd/Maildir ]; then
      rm -rf /var/lib/tox-bootstrapd/Maildir
  fi

  # create configuration file
  echo "port = $TOX_PORT" > /etc/tox-bootstrapd.conf
  echo 'keys_file_path = "/var/lib/tox-bootstrapd/keys"' >> /etc/tox-bootstrapd.conf
  echo 'pid_file_path = "/var/run/tox-bootstrapd/tox-bootstrapd.pid"' >> /etc/tox-bootstrapd.conf
  echo 'enable_ipv6 = true' >> /etc/tox-bootstrapd.conf
  echo 'enable_ipv4_fallback = true' >> /etc/tox-bootstrapd.conf
  echo 'enable_lan_discovery = true' >> /etc/tox-bootstrapd.conf
  echo 'enable_tcp_relay = true' >> /etc/tox-bootstrapd.conf
  echo "tcp_relay_ports = [443, 3389, $TOX_PORT]" >> /etc/tox-bootstrapd.conf
  echo 'enable_motd = true' >> /etc/tox-bootstrapd.conf
  echo 'motd = "tox-bootstrapd"' >> /etc/tox-bootstrapd.conf

  if [ $TOX_NODES ]; then
      echo 'bootstrap_nodes = (' >> /etc/tox-bootstrapd.conf
      toxcount=0
      while [ "x${TOX_NODES[toxcount]}" != "x" ]
      do
          toxval_ipv4=$(echo $TOX_NODES[toxcount] | awk -F ',' '{print $1}')
          toxval_ipv6=$(echo $TOX_NODES[toxcount] | awk -F ',' '{print $2}')
          toxval_port=$(echo $TOX_NODES[toxcount] | awk -F ',' '{print $3}')
          toxval_pubkey=$(echo $TOX_NODES[toxcount] | awk -F ',' '{print $4}')
          toxval_maintainer=$(echo $TOX_NODES[toxcount] | awk -F ',' '{print $5}')
          echo "{ // $toxval_maintainer" >> /etc/tox-bootstrapd.conf
          if [[ $toxval_ipv6 != 'NONE' ]]; then
              echo "  address = \"$toxval_ipv6\"" >> /etc/tox-bootstrapd.conf
          else
              echo "  address = \"$toxval_ipv4\"" >> /etc/tox-bootstrapd.conf
          fi
          echo "  port = $toxval_port" >> /etc/tox-bootstrapd.conf
          echo "  public_key = \"$toxval_pubkey\"" >> /etc/tox-bootstrapd.conf
          toxcount=$(( $toxcount + 1 ))
          if [ "x${TOX_NODES[toxcount]}" != "x" ]; then
              echo "}," >> /etc/tox-bootstrapd.conf
          else
              echo "}" >> /etc/tox-bootstrapd.conf
          fi
      done
      echo ')' >> /etc/tox-bootstrapd.conf
  fi

  if [ ! -f $INSTALL_DIR/toxcore/other/bootstrap_daemon/tox-bootstrapd.service ]; then
      echo "File not found $INSTALL_DIR/toxcore/other/bootstrap_daemon/tox-bootstrapd.service"
      exit 7359
  fi
  cp $INSTALL_DIR/toxcore/other/bootstrap_daemon/tox-bootstrapd.service /etc/systemd/system/

  enable_ipv6

  systemctl daemon-reload
  systemctl enable tox-bootstrapd.service
  systemctl start tox-bootstrapd.service
  if [ ! "$?" = "0" ]; then
      systemctl status tox-bootstrapd.service
      exit 5846
  fi

  systemctl restart tox-bootstrapd.service
  TOX_PUBLIC_KEY=$(cat /var/log/syslog | grep tox | grep "Public Key" | awk -F ' ' '{print $8}' | tail -1)
  if [ ${#TOX_PUBLIC_KEY} -lt 30 ]; then
      echo 'Could not obtain the tox node public key'
      exit 6529
  fi

  # save the public key for later reference
  echo "$TOX_PUBLIC_KEY" > $TOX_BOOTSTRAP_ID_FILE

  configure_firewall_for_tox

  if ! grep -q "Tox node" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Tox' >> /home/$MY_USERNAME/README
      echo '===' >> /home/$MY_USERNAME/README
      echo "Your Tox node public key is: $TOX_PUBLIC_KEY" >> /home/$MY_USERNAME/README
      echo 'In the Toxic client you can connect to it with:' >> /home/$MY_USERNAME/README
      echo "  /connect $DEFAULT_DOMAIN_NAME.local $TOX_PORT $TOX_PUBLIC_KEY" >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
      chmod 600 /home/$MY_USERNAME/README
  fi

  echo 'install_tox_node' >> $COMPLETION_FILE
}

function install_tox_client {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_DEVELOPER" ]]; then
      return
  fi

  # update to the next commit
  if [ -d $INSTALL_DIR/toxic ]; then
      if grep -q "Toxic commit" $COMPLETION_FILE; then
          CURRENT_TOXIC_COMMIT=$(grep "Toxic commit" $COMPLETION_FILE | awk -F ':' '{print $2}')
          if [[ "$CURRENT_TOXIC_COMMIT" != "$TOXIC_COMMIT" ]]; then
              cd $INSTALL_DIR/toxic
              git stash
              git checkout master
              git pull
              git checkout $TOXIC_COMMIT -b $TOXIC_COMMIT
              sed -i "s/Toxic commit.*/Toxic commit:$TOXIC_COMMIT/g" $COMPLETION_FILE
              make
              make install
          fi
      else
          echo "Toxic commit:$TOXIC_COMMIT" >> $COMPLETION_FILE
      fi
  fi

  if grep -Fxq "install_tox_client" $COMPLETION_FILE; then
      return
  fi

  apt-get -y install libncursesw5-dev libconfig-dev libqrencode-dev libcurl4-openssl-dev

  cd $INSTALL_DIR
  git clone $TOXIC_REPO
  cd $INSTALL_DIR/toxic
  git checkout $TOXIC_COMMIT -b $TOXIC_COMMIT
  if ! grep -q "Toxic commit" $COMPLETION_FILE; then
      echo "Toxic commit:$TOXIC_COMMIT" >> $COMPLETION_FILE
  else
      sed -i "s/Toxic commit.*/Toxic commit:$TOXIC_COMMIT/g" $COMPLETION_FILE
  fi

  make
  if [ ! -f $INSTALL_DIR/toxic/build/toxic ]; then
      exit 74872
  fi
  make install
  su -c 'echo "n
/nick $MY_USERNAME
/exit
" | /usr/bin/toxic -d' - $MY_USERNAME

  echo 'install_tox_client' >> $COMPLETION_FILE
}

function install_xmpp {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_DEVELOPER" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  if grep -Fxq "install_xmpp" $COMPLETION_FILE; then
      return
  fi
  apt-get -y install lua-sec
  apt-get -y install prosody

  if [ ! -d /etc/prosody ]; then
      echo "ERROR: prosody does not appear to have installed. $CHECK_MESSAGE"
      exit 52
  fi

  if [ ! -f /etc/ssl/certs/xmpp.dhparam ]; then
      ${PROJECT_NAME}-addcert -h xmpp --dhkey $DH_KEYLENGTH
      check_certificates xmpp
  fi
  chown prosody:prosody /etc/ssl/private/xmpp.key
  chown prosody:prosody /etc/ssl/certs/xmpp.*
  cp -a /etc/prosody/conf.avail/example.com.cfg.lua /etc/prosody/conf.avail/xmpp.cfg.lua

  sed -i 's|/etc/prosody/certs/example.com.key|/etc/ssl/private/xmpp.key|g' /etc/prosody/conf.avail/xmpp.cfg.lua
  sed -i 's|/etc/prosody/certs/example.com.crt|/etc/ssl/certs/xmpp.crt|g' /etc/prosody/conf.avail/xmpp.cfg.lua
  if ! grep -q "xmpp.dhparam" /etc/prosody/conf.avail/xmpp.cfg.lua; then
      sed -i '/certificate =/a\        dhparam = "/etc/ssl/certs/xmpp.dhparam";' /etc/prosody/conf.avail/xmpp.cfg.lua
  fi
  if ! grep -q 'options = {"no_sslv2", "no_sslv3" }' /etc/prosody/conf.avail/xmpp.cfg.lua; then
      sed -i '/certificate =/a\        options = {"no_sslv2", "no_sslv3" };' /etc/prosody/conf.avail/xmpp.cfg.lua
  fi
  if ! grep -q 'ciphers =' /etc/prosody/conf.avail/xmpp.cfg.lua; then
      sed -i "/certificate =/a\        ciphers = $XMPP_CIPHERS;" /etc/prosody/conf.avail/xmpp.cfg.lua
  fi
  if ! grep -q 'depth = "1";' /etc/prosody/conf.avail/xmpp.cfg.lua; then
      sed -i '/certificate =/a\        depth = "1";' /etc/prosody/conf.avail/xmpp.cfg.lua
  fi
  if ! grep -q 'curve =' /etc/prosody/conf.avail/xmpp.cfg.lua; then
      sed -i "/certificate =/a\        curve = $XMPP_ECC_CURVE;" /etc/prosody/conf.avail/xmpp.cfg.lua
  fi

  sed -i "s/example.com/$DEFAULT_DOMAIN_NAME/g" /etc/prosody/conf.avail/xmpp.cfg.lua
  sed -i 's/enabled = false -- Remove this line to enable this host//g' /etc/prosody/conf.avail/xmpp.cfg.lua

  if ! grep -q "modules_enabled" /etc/prosody/conf.avail/xmpp.cfg.lua; then
      echo '' >> /etc/prosody/conf.avail/xmpp.cfg.lua
      echo 'modules_enabled = {' >> /etc/prosody/conf.avail/xmpp.cfg.lua
      echo '  "bosh"; -- Enable mod_bosh' >> /etc/prosody/conf.avail/xmpp.cfg.lua
      echo '  "tls"; -- Enable mod_tls' >> /etc/prosody/conf.avail/xmpp.cfg.lua
      echo '  "saslauth"; -- Enable mod_saslauth' >> /etc/prosody/conf.avail/xmpp.cfg.lua
      echo '}' >> /etc/prosody/conf.avail/xmpp.cfg.lua
      echo '' >> /etc/prosody/conf.avail/xmpp.cfg.lua
      echo 'c2s_require_encryption = true' >> /etc/prosody/conf.avail/xmpp.cfg.lua
      echo 's2s_require_encryption = true' >> /etc/prosody/conf.avail/xmpp.cfg.lua
      echo 'allow_unencrypted_plain_auth = false' >> /etc/prosody/conf.avail/xmpp.cfg.lua
  fi
  ln -sf /etc/prosody/conf.avail/xmpp.cfg.lua /etc/prosody/conf.d/xmpp.cfg.lua

  sed -i 's|/etc/prosody/certs/localhost.key|/etc/ssl/private/xmpp.key|g' /etc/prosody/prosody.cfg.lua
  sed -i 's|/etc/prosody/certs/localhost.crt|/etc/ssl/certs/xmpp.crt|g' /etc/prosody/prosody.cfg.lua
  if ! grep -q "xmpp.dhparam" /etc/prosody/prosody.cfg.lua; then
      sed -i '/certificate =/a\    dhparam = "/etc/ssl/certs/xmpp.dhparam";' /etc/prosody/prosody.cfg.lua
  fi
  if ! grep -q 'options = {"no_sslv2", "no_sslv3" }' /etc/prosody/prosody.cfg.lua; then
      sed -i '/certificate =/a\    options = {"no_sslv2", "no_sslv3" };' /etc/prosody/prosody.cfg.lua
  fi
  if ! grep -q 'ciphers =' /etc/prosody/prosody.cfg.lua; then
      sed -i "/certificate =/a\    ciphers = $XMPP_CIPHERS;" /etc/prosody/prosody.cfg.lua
  fi
  if ! grep -q 'depth = "1";' /etc/prosody/prosody.cfg.lua; then
      sed -i '/certificate =/a\    depth = "1";' /etc/prosody/prosody.cfg.lua
  fi
  if ! grep -q 'curve =' /etc/prosody/prosody.cfg.lua; then
      sed -i "/certificate =/a\    curve = $XMPP_ECC_CURVE;" /etc/prosody/prosody.cfg.lua
  fi
  sed -i 's/c2s_require_encryption = false/c2s_require_encryption = true/g' /etc/prosody/prosody.cfg.lua
  if ! grep -q "s2s_require_encryption" /etc/prosody/prosody.cfg.lua; then
      sed -i '/c2s_require_encryption/a\s2s_require_encryption = true' /etc/prosody/prosody.cfg.lua
  fi
  if ! grep -q "allow_unencrypted_plain_auth" /etc/prosody/prosody.cfg.lua; then
      echo 'allow_unencrypted_plain_auth = false' >> /etc/prosody/conf.avail/xmpp.cfg.lua
  fi
  sed -i 's/--"bosh";/"bosh";/g' /etc/prosody/prosody.cfg.lua
  sed -i 's/authentication = "internal_plain"/authentication = "internal_hashed"/g' /etc/prosody/prosody.cfg.lua
  sed -i 's/enabled = false -- Remove this line to enable this host//g' /etc/prosody/prosody.cfg.lua
  sed -i 's|key = "/etc/prosody/certs/example.com.key"|key = "/etc/ssl/private/xmpp.key"|g' /etc/prosody/prosody.cfg.lua
  sed -i 's|certificate = "/etc/prosody/certs/example.com.crt"|certificate = "/etc/ssl/certs/xmpp.crt"|g' /etc/prosody/prosody.cfg.lua
  sed -i "s/example.com/$DEFAULT_DOMAIN_NAME/g" /etc/prosody/prosody.cfg.lua

  service prosody restart
  touch /home/$MY_USERNAME/README

  if ! grep -q "Your XMPP password is" /home/$MY_USERNAME/README; then
      if [ -f $IMAGE_PASSWORD_FILE ]; then
          XMPP_PASSWORD="$(printf `cat $IMAGE_PASSWORD_FILE`)"
      else
          XMPP_PASSWORD="$(openssl rand -base64 8)"
      fi
      prosodyctl register $MY_USERNAME $DEFAULT_DOMAIN_NAME $XMPP_PASSWORD
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'XMPP' >> /home/$MY_USERNAME/README
      echo '====' >> /home/$MY_USERNAME/README
      echo "Your XMPP password is: $XMPP_PASSWORD" >> /home/$MY_USERNAME/README
      echo 'You can change it with: ' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo "    prosodyctl passwd $MY_EMAIL_ADDRESS" >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
      chmod 600 /home/$MY_USERNAME/README
  fi
  echo 'install_xmpp' >> $COMPLETION_FILE
}

function install_watchdog_script {
  if grep -Fxq "install_watchdog_script" $COMPLETION_FILE; then
      return
  fi
  echo '#!/bin/bash' > /usr/bin/$WATCHDOG_SCRIPT_NAME
  echo 'LOGFILE=/var/log/keepon.log' >> /usr/bin/$WATCHDOG_SCRIPT_NAME
  echo 'CURRENT_DATE=$(date)' >> /usr/bin/$WATCHDOG_SCRIPT_NAME
  # application specific stuff is added later
  chmod +x /usr/bin/$WATCHDOG_SCRIPT_NAME

  if ! grep -q "/usr/bin/$WATCHDOG_SCRIPT_NAME" /etc/crontab; then
      echo "* *     * * *   root    /usr/bin/$WATCHDOG_SCRIPT_NAME" >> /etc/crontab
  fi

  echo 'install_watchdog_script' >> $COMPLETION_FILE
}

function install_irc_server {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_DEVELOPER" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  if grep -Fxq "install_irc_server" $COMPLETION_FILE; then
      return
  fi
  apt-get -y install ngircd

  # for mesh peers also install an irc client
  if [[ $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      apt-get -y install irssi
  fi

  if [ ! -d /etc/ngircd ]; then
      echo "ERROR: ngircd does not appear to have installed. $CHECK_MESSAGE"
      exit 53
  fi

  if [ ! -f /etc/ssl/certs/ngircd.dhparam ]; then
      ${PROJECT_NAME}-addcert -h ngircd --dhkey $DH_KEYLENGTH
      check_certificates ngircd
  fi

  DEFAULTDOMAIN=$DEFAULT_DOMAIN_NAME
  if [[ $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      DEFAULTDOMAIN="${DEFAULT_DOMAIN_NAME}.local"
  fi

  echo '**************************************************' > /etc/ngircd/motd
  echo '*           F R E E D O M B O N E   I R C        *' >> /etc/ngircd/motd
  echo '*                                                *' >> /etc/ngircd/motd
  echo '*               Freedom in the Cloud             *' >> /etc/ngircd/motd
  echo '**************************************************' >> /etc/ngircd/motd
  sed -i 's|MotdFile = /etc/ngircd/ngircd.motd|MotdFile = /etc/ngircd/motd|g' /etc/ngircd/ngircd.conf
  sed -i "s/irc@irc.example.com/$MY_EMAIL_ADDRESS/g" /etc/ngircd/ngircd.conf
  sed -i "s/irc.example.net/$DEFAULTDOMAIN/g" /etc/ngircd/ngircd.conf
  sed -i "s|Yet another IRC Server running on Debian GNU/Linux|IRC Server of $DEFAULTDOMAIN|g" /etc/ngircd/ngircd.conf
  sed -i 's/;Password = wealllikedebian/Password =/g' /etc/ngircd/ngircd.conf
  sed -i 's|;CertFile = /etc/ssl/certs/server.crt|CertFile = /etc/ssl/certs/ngircd.crt|g' /etc/ngircd/ngircd.conf
  sed -i 's|;DHFile = /etc/ngircd/dhparams.pem|DHFile = /etc/ssl/certs/ngircd.dhparam|g' /etc/ngircd/ngircd.conf
  sed -i 's|;KeyFile = /etc/ssl/private/server.key|KeyFile = /etc/ssl/private/ngircd.key|g' /etc/ngircd/ngircd.conf
  sed -i "s/;Ports =.*/Ports = $IRC_PORT, 9999/g" /etc/ngircd/ngircd.conf
  sed -i 's/;Name = #ngircd/Name = #freedombone/g' /etc/ngircd/ngircd.conf
  sed -i 's/;Topic = Our ngircd testing channel/Topic = Freedombone chat channel/g' /etc/ngircd/ngircd.conf
  sed -i 's/;MaxUsers = 23/MaxUsers = 23/g' /etc/ngircd/ngircd.conf
  sed -i 's|;KeyFile = /etc/ngircd/#chan.key|KeyFile = /etc/ngircd/#freedombone.key|g' /etc/ngircd/ngircd.conf
  sed -i 's/;CloakHost = cloaked.host/CloakHost = freedombone/g' /etc/ngircd/ngircd.conf
  IRC_SALT="$(openssl rand -base64 32)"
  if [ -f $IMAGE_PASSWORD_FILE ]; then
      IRC_OPERATOR_PASSWORD="$(printf `cat $IMAGE_PASSWORD_FILE`)"
  else
      IRC_OPERATOR_PASSWORD="$(openssl rand -base64 8)"
  fi
  sed -i "s|;CloakHostSalt = abcdefghijklmnopqrstuvwxyz|CloakHostSalt = $IRC_SALT|g" /etc/ngircd/ngircd.conf
  sed -i 's/;ConnectIPv4 = yes/ConnectIPv4 = yes/g' /etc/ngircd/ngircd.conf
  sed -i 's/;MorePrivacy = no/MorePrivacy = yes/g' /etc/ngircd/ngircd.conf
  sed -i 's/;RequireAuthPing = no/RequireAuthPing = no/g' /etc/ngircd/ngircd.conf
  sed -i "s/;Name = TheOper/Name = $MY_USERNAME/g" /etc/ngircd/ngircd.conf
  sed -i "s/;Password = ThePwd/Password = $IRC_OPERATOR_PASSWORD/g" /etc/ngircd/ngircd.conf
  if [ $IRC_PASSWORD ]; then
      sed -i "0,/RE/s/Password =.*/Password = $IRC_PASSWORD/" /etc/ngircd/ngircd.conf
  fi
  # If we are on a mesh then DNS is not available
  if [[ $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      sed -i "s/;DNS =.*/DNS = no/g" /etc/ngircd/ngircd.conf
  fi
  mkdir /var/run/ircd
  chown -R irc:irc /var/run/ircd
  mkdir /var/run/ngircd
  touch /var/run/ngircd/ngircd.pid
  chown -R irc:irc /var/run/ngircd
  systemctl restart ngircd

  # keep the daemon running
  echo '' >> /usr/bin/$WATCHDOG_SCRIPT_NAME
  echo '# keep irc daemon running' >> /usr/bin/$WATCHDOG_SCRIPT_NAME
  echo 'IRC_RUNNING=$(pgrep ngircd > /dev/null && echo Running)' >> /usr/bin/$WATCHDOG_SCRIPT_NAME
  echo 'if [ ! $IRC_RUNNING ]; then' >> /usr/bin/$WATCHDOG_SCRIPT_NAME
  echo '  systemctl start ngircd' >> /usr/bin/$WATCHDOG_SCRIPT_NAME
  echo '  echo -n $CURRENT_DATE >> $LOGFILE' >> /usr/bin/$WATCHDOG_SCRIPT_NAME
  echo '  echo " IRC daemon restarted" >> $LOGFILE' >> /usr/bin/$WATCHDOG_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$WATCHDOG_SCRIPT_NAME

  if ! grep -q "IRC Server" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'IRC Server' >> /home/$MY_USERNAME/README
      echo '==========' >> /home/$MY_USERNAME/README
      echo 'To connect to your IRC server in irssi:' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo "  /server add -auto -ssl $DEFAULTDOMAIN $IRC_PORT" >> /home/$MY_USERNAME/README
      echo "  /connect $DEFAULT_DOMAIN_NAME" >> /home/$MY_USERNAME/README
      echo '  /join #freedombone' >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
      chmod 600 /home/$MY_USERNAME/README
  fi

  echo 'install_irc_server' >> $COMPLETION_FILE
}

function get_wiki_admin_password {
  if [ -f /home/$MY_USERNAME/README ]; then
      if grep -q "Wiki password" /home/$MY_USERNAME/README; then
          WIKI_ADMIN_PASSWORD=$(cat /home/$MY_USERNAME/README | grep "Wiki password:" | awk -F ':' '{print $2}' | sed 's/^ *//')
      fi
  fi
}

function install_wiki {
  if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_DEVELOPER" || $SYSTEM_TYPE == "$VARIANT_MASH" ]]; then
      return
  fi
  if grep -Fxq "install_wiki" $COMPLETION_FILE; then
      return
  fi
  if [ ! $WIKI_DOMAIN_NAME ]; then
      return
  fi
  apt-get -y install dokuwiki
  apt-get -y remove --purge apache*
  if [ -d /etc/apache2 ]; then
      rm -rf /etc/apache2
      echo 'Removed Apache installation after Dokuwiki install'
  fi

  if [ ! -d /var/www/$WIKI_DOMAIN_NAME ]; then
      mkdir /var/www/$WIKI_DOMAIN_NAME
  fi
  if [ -d /var/www/$WIKI_DOMAIN_NAME/htdocs ]; then
      rm -rf /var/www/$WIKI_DOMAIN_NAME/htdocs
  fi

  ln -s /usr/share/dokuwiki /var/www/$WIKI_DOMAIN_NAME/htdocs

  mkdir /var/lib/dokuwiki/custom
  cp /etc/dokuwiki/local.php.dist /var/lib/dokuwiki/custom/local.php
  ln -s /var/lib/dokuwiki/custom/local.php /etc/dokuwiki/local.php

  chown www-data /var/lib/dokuwiki/custom
  chown www-data /var/lib/dokuwiki/custom/local.php
  chown -R www-data /etc/dokuwiki
  chown -R www-data /usr/share/dokuwiki/lib/
  chmod 600 /var/lib/dokuwiki/custom/local.php
  chmod -R 755 /usr/share/dokuwiki/lib

  sed -i 's|//$conf|$conf|g' /var/lib/dokuwiki/custom/local.php
  sed -i "s|joe|$MY_USERNAME|g" /var/lib/dokuwiki/custom/local.php

  sed -i "s|Debian DokuWiki|$WIKI_TITLE|g" /etc/dokuwiki/local.php

  # set the admin user
  sed -i "s/@admin/$MY_USERNAME/g" /etc/dokuwiki/local.php

  # disallow registration of new users
  if ! grep -q "disableactions" /etc/dokuwiki/local.php; then
      echo "\$conf['disableactions'] = 'register';" >> /etc/dokuwiki/local.php
  fi
  if ! grep -q "disableactions" /var/lib/dokuwiki/custom/local.php; then
      echo "\$conf['disableactions'] = 'register';" >> /var/lib/dokuwiki/custom/local.php
  fi

  if ! grep -q "authtype" /var/lib/dokuwiki/custom/local.php; then
      echo "\$conf['authtype'] = 'authplain';" >> /var/lib/dokuwiki/custom/local.php
  fi
  if ! grep -q "authtype" /etc/dokuwiki/local.php; then
      echo "\$conf['authtype'] = 'authplain';" >> /etc/dokuwiki/local.php
 fi

  get_wiki_admin_password
  if [ ! $WIKI_ADMIN_PASSWORD ]; then
      if [ -f $IMAGE_PASSWORD_FILE ]; then
          WIKI_ADMIN_PASSWORD="$(printf `cat $IMAGE_PASSWORD_FILE`)"
      else
          WIKI_ADMIN_PASSWORD="$(openssl rand -base64 16)"
      fi
  fi
  HASHED_WIKI_PASSWORD=$(echo -n "$WIKI_ADMIN_PASSWORD" | md5sum | awk -F ' ' '{print $1}')
  echo -n "$MY_USERNAME:$HASHED_WIKI_PASSWORD:$MY_NAME:$MY_EMAIL:admin,user,upload" > /var/lib/dokuwiki/acl/users.auth.php
  chmod 640 /var/lib/dokuwiki/acl/users.auth.php

  if ! grep -q "video/ogg" /etc/dokuwiki/mime.conf; then
      echo 'ogv     video/ogg' >> /etc/dokuwiki/mime.conf
  fi
  if ! grep -q "video/mp4" /etc/dokuwiki/mime.conf; then
      echo 'mp4     video/mp4' >> /etc/dokuwiki/mime.conf
  fi
  if ! grep -q "video/webm" /etc/dokuwiki/mime.conf; then
      echo 'webm    video/webm' >> /etc/dokuwiki/mime.conf
  fi

  echo 'server {' > /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    listen 80;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    root /var/www/$WIKI_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    server_name $WIKI_DOMAIN_NAME;" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    access_log off;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    error_log /var/log/nginx/${WIKI_DOMAIN_NAME}_error.log $WEBSERVER_LOG_LEVEL;" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    index index.php;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    charset utf-8;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    client_max_body_size 20m;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    client_body_buffer_size 128k;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    limit_conn conn_limit_per_ip 10;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    limit_req zone=req_limit_per_ip burst=10 nodelay;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # rewrite to front controller as default rule' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location / {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        rewrite ^/(.*) /index.php?q=$uri&$args last;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    # make sure webfinger and other well known services aren't blocked" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # by denying dot files and rewrite request to the front controller' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ^~ /.well-known/ {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        allow all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # statically serve these file types when possible' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # otherwise fall back to front controller' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # allow browser to cache them' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # added .htm for advanced source code editor library' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~* \.(jpg|jpeg|gif|png|ico|css|js|htm|html|ttf|woff|svg)$ {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        expires 30d;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        try_files $uri /index.php?q=$uri&$args;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # block these file types' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~* \.(tpl|md|tgz|log|out)$ {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # or a unix socket' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~* \.php$ {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # Zero-day exploit defense.' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # http://forum.nginx.org/read.php?2,88845,page=3' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "        # Won't work properly (404 error) if the file is not stored on this" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "        # server, which is entirely possible with php-fpm/php-fcgi." >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "        # Comment the 'try_files' line out if you set up php-fpm/php-fcgi on" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "        # another machine. And then cross your fingers that you won't get hacked." >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        try_files $uri $uri/ /index.php;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        fastcgi_split_path_info ^(.+\.php)(/.+)$;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # With php5-cgi alone:' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # fastcgi_pass 127.0.0.1:9000;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # With php5-fpm:' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        fastcgi_pass unix:/var/run/php5-fpm.sock;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        include fastcgi_params;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        fastcgi_index index.php;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # deny access to all dot files' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~ /\. {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    #deny access to store' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~ /store {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~ /(data|conf|bin|inc)/ {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '      deny all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~ /\.ht {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '      deny  all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo 'server {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    listen 443 ssl;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    root /var/www/$WIKI_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    server_name $WIKI_DOMAIN_NAME;" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    access_log off;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    error_log /var/log/nginx/${WIKI_DOMAIN_NAME}_error_ssl.log $WEBSERVER_LOG_LEVEL;" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    index index.php;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    charset utf-8;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    client_max_body_size 20m;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    client_body_buffer_size 128k;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    limit_conn conn_limit_per_ip 10;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    limit_req zone=req_limit_per_ip burst=10 nodelay;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    ssl on;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    ssl_certificate /etc/ssl/certs/$WIKI_DOMAIN_NAME.crt;" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    ssl_certificate_key /etc/ssl/private/$WIKI_DOMAIN_NAME.key;" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    ssl_dhparam /etc/ssl/certs/$WIKI_DOMAIN_NAME.dhparam;" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    ssl_session_timeout 60m;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    ssl_prefer_server_ciphers on;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    ssl_session_cache  builtin:1000  shared:SSL:10m;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    ssl_protocols $SSL_PROTOCOLS; # not possible to do exclusive" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    ssl_ciphers '$SSL_CIPHERS';" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    add_header X-Frame-Options DENY;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    add_header X-Content-Type-Options nosniff;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    add_header Strict-Transport-Security "max-age=0;";' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # rewrite to front controller as default rule' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location / {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        rewrite ^/(.*) /index.php?q=$uri&$args last;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    # make sure webfinger and other well known services aren't blocked" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # by denying dot files and rewrite request to the front controller' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ^~ /.well-known/ {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        allow all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # statically serve these file types when possible' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # otherwise fall back to front controller' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # allow browser to cache them' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # added .htm for advanced source code editor library' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~* \.(jpg|jpeg|gif|png|ico|css|js|htm|html|ttf|woff|svg)$ {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        expires 30d;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        try_files $uri /index.php?q=$uri&$args;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # block these file types' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~* \.(tpl|md|tgz|log|out)$ {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # or a unix socket' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~* \.php$ {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # Zero-day exploit defense.' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # http://forum.nginx.org/read.php?2,88845,page=3' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "        # Won't work properly (404 error) if the file is not stored on this" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "        # server, which is entirely possible with php-fpm/php-fcgi." >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "        # Comment the 'try_files' line out if you set up php-fpm/php-fcgi on" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "        # another machine. And then cross your fingers that you won't get hacked." >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        try_files $uri $uri/ /index.php;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        fastcgi_split_path_info ^(.+\.php)(/.+)$;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # With php5-cgi alone:' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # fastcgi_pass 127.0.0.1:9000;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # With php5-fpm:' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        fastcgi_pass unix:/var/run/php5-fpm.sock;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        include fastcgi_params;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        fastcgi_index index.php;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # deny access to all dot files' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~ /\. {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    #deny access to store' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~ /store {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~ /(data|conf|bin|inc)/ {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '      deny all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~ /\.ht {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '      deny  all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME

  if [ ! -f /etc/ssl/certs/$WIKI_DOMAIN_NAME.dhparam ]; then
      if [[ $LETSENCRYPT_ENABLED != "yes" ]]; then
          ${PROJECT_NAME}-addcert -h $WIKI_DOMAIN_NAME --dhkey $DH_KEYLENGTH
      else
          ${PROJECT_NAME}-addcert -e $WIKI_DOMAIN_NAME -s $LETSENCRYPT_SERVER --dhkey $DH_KEYLENGTH
      fi
      check_certificates $WIKI_DOMAIN_NAME
  fi

  configure_php

  nginx_ensite $WIKI_DOMAIN_NAME
  service php5-fpm restart
  service nginx restart

  # update the dynamic DNS
  CURRENT_DDNS_DOMAIN=$WIKI_DOMAIN_NAME
  add_ddns_domain

  # add some post-install instructions
  if ! grep -q "Wiki password" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Wiki' >> /home/$MY_USERNAME/README
      echo '====' >> /home/$MY_USERNAME/README
      echo "Wiki username: $MY_USERNAME" >> /home/$MY_USERNAME/README
      echo "Wiki password: $WIKI_ADMIN_PASSWORD" >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Once you have set up the wiki then remove the install file:' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo "  rm /var/www/$WIKI_DOMAIN_NAME/htdocs/install.php" >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
      chmod 600 /home/$MY_USERNAME/README
  fi

  echo "Wiki domain:$WIKI_DOMAIN_NAME" >> $COMPLETION_FILE
  echo 'install_wiki' >> $COMPLETION_FILE
}

function get_blog_admin_password {
  if [ -f /home/$MY_USERNAME/README ]; then
      if grep -q "Your blog password is" /home/$MY_USERNAME/README; then
          FULLBLOG_ADMIN_PASSWORD=$(cat /home/$MY_USERNAME/README | grep "Your blog password is" | awk -F ':' '{print $2}' | sed 's/^ *//')
      fi
  fi
}

function install_blog {
  if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_DEVELOPER" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  if [ ! $FULLBLOG_DOMAIN_NAME ]; then
      echo 'The blog domain name was not specified'
      exit 5062
  fi

  # update to the next commit
  if [ -d /var/www/$FULLBLOG_DOMAIN_NAME/htdocs ]; then
      if grep -q "Blog commit" $COMPLETION_FILE; then
          CURRENT_FULLBLOG_COMMIT=$(grep "Blog commit" $COMPLETION_FILE | awk -F ':' '{print $2}')
          if [[ "$CURRENT_FULLBLOG_COMMIT" != "$FULLBLOG_COMMIT" ]]; then
              cd /var/www/$FULLBLOG_DOMAIN_NAME/htdocs
              git stash
              git checkout master
              git pull
              git checkout $FULLBLOG_COMMIT -b $FULLBLOG_COMMIT
              sed -i "s/Blog commit.*/Blog commit:$FULLBLOG_COMMIT/g" $COMPLETION_FILE
              chown -R www-data:www-data /var/www/$FULLBLOG_DOMAIN_NAME/htdocs
          fi
      else
          echo "Blog commit:$FULLBLOG_COMMIT" >> $COMPLETION_FILE
      fi
  fi

  if grep -Fxq "install_blog" $COMPLETION_FILE; then
      return
  fi

  if [ ! -d /var/www/$FULLBLOG_DOMAIN_NAME ]; then
      mkdir /var/www/$FULLBLOG_DOMAIN_NAME
  fi

  cd /var/www/$FULLBLOG_DOMAIN_NAME
  git clone $FULLBLOG_REPO htdocs
  cd htdocs
  git checkout $FULLBLOG_COMMIT -b $FULLBLOG_COMMIT
  if ! grep -q "Blog commit" $COMPLETION_FILE; then
      echo "Blog commit:$FULLBLOG_COMMIT" >> $COMPLETION_FILE
  else
      sed -i "s/Blog commit.*/Blog commit:$FULLBLOG_COMMIT/g" $COMPLETION_FILE
  fi
  cd /var/www/$FULLBLOG_DOMAIN_NAME

  chown -R www-data:www-data /var/www/$FULLBLOG_DOMAIN_NAME/htdocs

  echo 'server {' > /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    listen 80;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    root /var/www/$FULLBLOG_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    server_name $FULLBLOG_DOMAIN_NAME;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    access_log off;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    error_log /var/log/nginx/${FULLBLOG_DOMAIN_NAME}_error.log $WEBSERVER_LOG_LEVEL;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    index index.php;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    charset utf-8;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    client_max_body_size 20m;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    client_body_buffer_size 128k;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    limit_conn conn_limit_per_ip 10;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    limit_req zone=req_limit_per_ip burst=10 nodelay;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # Always redirect the login page to https' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location /login {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        rewrite ^ https://$server_name$request_uri?;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # rewrite to front controller as default rule' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location / {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        rewrite ^/(.*) /index.php?q=$uri&$args last;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    # make sure webfinger and other well known services aren't blocked" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # by denying dot files and rewrite request to the front controller' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ^~ /.well-known/ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        allow all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # statically serve these file types when possible' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # otherwise fall back to front controller' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # allow browser to cache them' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # added .htm for advanced source code editor library' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~* \.(jpg|jpeg|gif|png|ico|css|js|htm|html|ttf|woff|svg)$ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        expires 30d;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        try_files $uri /index.php?q=$uri&$args;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # block these file types' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~* \.(tpl|md|tgz|log|out)$ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # or a unix socket' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~* \.php$ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # Zero-day exploit defense.' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # http://forum.nginx.org/read.php?2,88845,page=3' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "        # Won't work properly (404 error) if the file is not stored on this" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "        # server, which is entirely possible with php-fpm/php-fcgi." >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "        # Comment the 'try_files' line out if you set up php-fpm/php-fcgi on" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "        # another machine. And then cross your fingers that you won't get hacked." >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        try_files $uri $uri/ /index.php;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        fastcgi_split_path_info ^(.+\.php)(/.+)$;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # With php5-cgi alone:' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # fastcgi_pass 127.0.0.1:9000;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # With php5-fpm:' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        fastcgi_pass unix:/var/run/php5-fpm.sock;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        include fastcgi_params;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        fastcgi_index index.php;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # deny access to all dot files' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~ /\. {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    #deny access to store' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~ /store {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~ /(data|conf|bin|inc)/ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '      deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~ /\.ht {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '      deny  all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo 'server {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    listen 443 ssl;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    root /var/www/$FULLBLOG_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    server_name $FULLBLOG_DOMAIN_NAME;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    access_log off;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    error_log /var/log/nginx/${FULLBLOG_DOMAIN_NAME}_error_ssl.log $WEBSERVER_LOG_LEVEL;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    index index.php;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    charset utf-8;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    client_max_body_size 20m;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    client_body_buffer_size 128k;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    limit_conn conn_limit_per_ip 10;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    limit_req zone=req_limit_per_ip burst=10 nodelay;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    ssl on;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    ssl_certificate /etc/ssl/certs/$FULLBLOG_DOMAIN_NAME.crt;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    ssl_certificate_key /etc/ssl/private/$FULLBLOG_DOMAIN_NAME.key;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    ssl_dhparam /etc/ssl/certs/$FULLBLOG_DOMAIN_NAME.dhparam;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    ssl_session_timeout 60m;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    ssl_prefer_server_ciphers on;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    ssl_session_cache  builtin:1000  shared:SSL:10m;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    ssl_protocols $SSL_PROTOCOLS; # not possible to do exclusive" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    ssl_ciphers '$SSL_CIPHERS';" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    add_header X-Frame-Options DENY;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    add_header X-Content-Type-Options nosniff;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    add_header Strict-Transport-Security "max-age=0;";' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # rewrite to front controller as default rule' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location / {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        rewrite ^/(.*) /index.php?q=$uri&$args last;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    # make sure webfinger and other well known services aren't blocked" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # by denying dot files and rewrite request to the front controller' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ^~ /.well-known/ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        allow all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # statically serve these file types when possible' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # otherwise fall back to front controller' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # allow browser to cache them' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # added .htm for advanced source code editor library' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~* \.(jpg|jpeg|gif|png|ico|css|js|htm|html|ttf|woff|svg)$ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        expires 30d;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        try_files $uri /index.php?q=$uri&$args;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # block these file types' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~* \.(tpl|md|tgz|log|out)$ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # or a unix socket' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~* \.php$ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # Zero-day exploit defense.' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # http://forum.nginx.org/read.php?2,88845,page=3' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "        # Won't work properly (404 error) if the file is not stored on this" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "        # server, which is entirely possible with php-fpm/php-fcgi." >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "        # Comment the 'try_files' line out if you set up php-fpm/php-fcgi on" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "        # another machine. And then cross your fingers that you won't get hacked." >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        try_files $uri $uri/ /index.php;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        fastcgi_split_path_info ^(.+\.php)(/.+)$;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # With php5-cgi alone:' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # fastcgi_pass 127.0.0.1:9000;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # With php5-fpm:' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        fastcgi_pass unix:/var/run/php5-fpm.sock;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        include fastcgi_params;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        fastcgi_index index.php;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # deny access to all dot files' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~ /\. {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    #deny access to store' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~ /store {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~ /(data|conf|bin|inc)/ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '      deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~ /\.ht {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '      deny  all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME

  if [ ! -f /etc/ssl/certs/$FULLBLOG_DOMAIN_NAME.dhparam ]; then
      if [[ $LETSENCRYPT_ENABLED != "yes" ]]; then
          ${PROJECT_NAME}-addcert -h $FULLBLOG_DOMAIN_NAME --dhkey $DH_KEYLENGTH
      else
          ${PROJECT_NAME}-addcert -e $FULLBLOG_DOMAIN_NAME -s $LETSENCRYPT_SERVER --dhkey $DH_KEYLENGTH
      fi
      check_certificates $FULLBLOG_DOMAIN_NAME
  fi

  configure_php

  # blog settings
  cp /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini.example /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
  sed -i "s|site.url.*|site.url = '/'|g" /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
  sed -i "s|blog.title.*|blog.title = '$MY_BLOG_TITLE'|g" /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
  sed -i "s|blog.tagline.*|blog.tagline = '$MY_BLOG_SUBTITLE'|g" /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
  sed -i 's|timezone.*|timezone = "Europe/London"|g' /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
  sed -i "s|Your name|$MY_NAME|g" /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini

  # create a user password
  get_blog_admin_password
  if [ ! $FULLBLOG_ADMIN_PASSWORD ]; then
      if [ -f $IMAGE_PASSWORD_FILE ]; then
          FULLBLOG_ADMIN_PASSWORD="$(printf `cat $IMAGE_PASSWORD_FILE`)"
      else
          FULLBLOG_ADMIN_PASSWORD="$(openssl rand -base64 16)"
      fi
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'HTMLy Blog' >> /home/$MY_USERNAME/README
      echo '==========' >> /home/$MY_USERNAME/README
      echo "Your blog username: $MY_USERNAME" >> /home/$MY_USERNAME/README
      echo "Your blog password is: $FULLBLOG_ADMIN_PASSWORD" >> /home/$MY_USERNAME/README
      echo "Log into your blog at https://$FULLBLOG_DOMAIN_NAME/login" >> /home/$MY_USERNAME/README
      echo 'Edit your blog title and time zone at:' >> /home/$MY_USERNAME/README
      echo "  /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini" >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
      chmod 600 /home/$MY_USERNAME/README
  fi

  # create a user
  echo ';Password' > /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/users/$MY_USERNAME.ini
  echo "password = '$FULLBLOG_ADMIN_PASSWORD'" >> /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/users/$MY_USERNAME.ini
  echo 'encryption = clear' >> /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/users/$MY_USERNAME.ini
  echo ';Role' >> /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/users/$MY_USERNAME.ini
  echo 'role = admin' >> /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/users/$MY_USERNAME.ini

  nginx_ensite $FULLBLOG_DOMAIN_NAME
  service php5-fpm restart
  service nginx restart

  # update the dynamic DNS
  CURRENT_DDNS_DOMAIN=$FULLBLOG_DOMAIN_NAME
  add_ddns_domain

  echo 'install_blog' >> $COMPLETION_FILE
}

function install_gnu_social {
  if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_DEVELOPER" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  if [ ! $MICROBLOG_DOMAIN_NAME ]; then
      echo 'No domain name was given for the microblog'
      exit 7359
  fi

  # update to the next commit
  if [ -d /var/www/$MICROBLOG_DOMAIN_NAME/htdocs ]; then
      if grep -q "GNU Social commit" $COMPLETION_FILE; then
          CURRENT_GNUSOCIAL_COMMIT=$(grep "GNU Social commit" $COMPLETION_FILE | awk -F ':' '{print $2}')
          if [[ "$CURRENT_GNUSOCIAL_COMMIT" != "$GNUSOCIAL_COMMIT" ]]; then
              cd /var/www/$MICROBLOG_DOMAIN_NAME/htdocs
              git stash
              git checkout master
              git pull
              git checkout $GNUSOCIAL_COMMIT -b $GNUSOCIAL_COMMIT
              sed -i "s/GNU Social commit.*/GNU Social commit:$GNUSOCIAL_COMMIT/g" $COMPLETION_FILE
              chown -R www-data:www-data /var/www/$MICROBLOG_DOMAIN_NAME/htdocs
          fi
      else
          echo "GNU Social commit:$GNUSOCIAL_COMMIT" >> $COMPLETION_FILE
      fi
  fi

  if grep -Fxq "install_gnu_social" $COMPLETION_FILE; then
      return
  fi


  install_mariadb
  get_mariadb_password
  repair_databases_script

  apt-get -y install php-gettext php5-curl php5-gd php5-mysql git curl php-xml-parser

  if [ ! -d /var/www/$MICROBLOG_DOMAIN_NAME ]; then
      mkdir /var/www/$MICROBLOG_DOMAIN_NAME
  fi
  if [ ! -d /var/www/$MICROBLOG_DOMAIN_NAME/htdocs ]; then
      mkdir /var/www/$MICROBLOG_DOMAIN_NAME/htdocs
  fi

  cd $INSTALL_DIR
  git clone $MICROBLOG_REPO gnusocial

  cd gnusocial
  git checkout $GNUSOCIAL_COMMIT -b $GNUSOCIAL_COMMIT
  if ! grep -q "GNU Social commit" $COMPLETION_FILE; then
      echo "GNU Social commit:$GNUSOCIAL_COMMIT" >> $COMPLETION_FILE
  else
      sed -i "s/GNU Social commit.*/GNU Social commit:$GNUSOCIAL_COMMIT/g" $COMPLETION_FILE
  fi

  cd $INSTALL_DIR
  rm -rf /var/www/$MICROBLOG_DOMAIN_NAME/htdocs
  mv gnusocial /var/www/$MICROBLOG_DOMAIN_NAME/htdocs
  chmod a+w /var/www/$MICROBLOG_DOMAIN_NAME/htdocs
  chown www-data:www-data /var/www/$MICROBLOG_DOMAIN_NAME/htdocs
  chmod a+w /var/www/$MICROBLOG_DOMAIN_NAME/htdocs/avatar
  chmod a+w /var/www/$MICROBLOG_DOMAIN_NAME/htdocs/background
  chmod a+w /var/www/$MICROBLOG_DOMAIN_NAME/htdocs/file
  chmod +x /var/www/$MICROBLOG_DOMAIN_NAME/htdocs/scripts/maildaemon.php

  get_mariadb_gnusocial_admin_password
  if [ ! $MICROBLOG_ADMIN_PASSWORD ]; then
      if [ -f $IMAGE_PASSWORD_FILE ]; then
          MICROBLOG_ADMIN_PASSWORD="$(printf `cat $IMAGE_PASSWORD_FILE`)"
      else
          MICROBLOG_ADMIN_PASSWORD="$(openssl rand -base64 32)"
      fi
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'GNU Social' >> /home/$MY_USERNAME/README
      echo '==========' >> /home/$MY_USERNAME/README
      echo "Your MariaDB gnusocial admin password is: $MICROBLOG_ADMIN_PASSWORD" >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
      chmod 600 /home/$MY_USERNAME/README
  fi

  echo "create database gnusocial;
CREATE USER 'gnusocialadmin'@'localhost' IDENTIFIED BY '$MICROBLOG_ADMIN_PASSWORD';
GRANT ALL PRIVILEGES ON gnusocial.* TO 'gnusocialadmin'@'localhost';
quit" > $INSTALL_DIR/batch.sql
  chmod 600 $INSTALL_DIR/batch.sql
  mysql -u root --password="$MARIADB_PASSWORD" < $INSTALL_DIR/batch.sql
  shred -zu $INSTALL_DIR/batch.sql

  if [ ! -f "/etc/aliases" ]; then
      touch /etc/aliases
  fi
  if grep -q "www-data: root" /etc/aliases; then
      echo 'www-data: root' >> /etc/aliases
  fi
  if grep -q "/var/www/$MICROBLOG_DOMAIN_NAME/htdocs/scripts/maildaemon.php" /etc/aliases; then
      echo "*: /var/www/$MICROBLOG_DOMAIN_NAME/htdocs/scripts/maildaemon.php" >> /etc/aliases
  fi
  newaliases

  # update the dynamic DNS
  CURRENT_DDNS_DOMAIN=$MICROBLOG_DOMAIN_NAME
  add_ddns_domain

  echo 'server {' > /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    listen 80;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    server_name $MICROBLOG_DOMAIN_NAME;" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    root /var/www/$MICROBLOG_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    access_log off;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    error_log /var/log/nginx/${MICROBLOG_DOMAIN_NAME}_error.log $WEBSERVER_LOG_LEVEL;" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    index index.php;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    limit_conn conn_limit_per_ip 10;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    limit_req zone=req_limit_per_ip burst=10 nodelay;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    rewrite ^ https://$server_name$request_uri? permanent;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo 'server {' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    listen 443 ssl;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    server_name $MICROBLOG_DOMAIN_NAME;" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    root /var/www/$MICROBLOG_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    index index.php index.html index.htm;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    access_log off;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    limit_conn conn_limit_per_ip 10;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    limit_req zone=req_limit_per_ip burst=10 nodelay;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    location ~* \.php$ {' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '        # Zero-day exploit defense.' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '        # http://forum.nginx.org/read.php?2,88845,page=3' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '        try_files $uri $uri/ /index.php;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '        fastcgi_split_path_info ^(.+\.php)(/.+)$;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '        fastcgi_pass unix:/var/run/php5-fpm.sock;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '        include fastcgi_params;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '        fastcgi_index index.php;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '        fastcgi_read_timeout 300;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    ssl on;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    ssl_certificate /etc/ssl/certs/$MICROBLOG_DOMAIN_NAME.crt;" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    ssl_certificate_key /etc/ssl/private/$MICROBLOG_DOMAIN_NAME.key;" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    ssl_dhparam /etc/ssl/certs/$MICROBLOG_DOMAIN_NAME.dhparam;" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    ssl_session_timeout 60m;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    ssl_prefer_server_ciphers on;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    ssl_session_cache  builtin:1000  shared:SSL:10m;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    ssl_protocols $SSL_PROTOCOLS; # not possible to do exclusive" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    ssl_ciphers '$SSL_CIPHERS';" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    add_header X-Frame-Options DENY;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    add_header X-Content-Type-Options nosniff;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    add_header Strict-Transport-Security max-age=15768000;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '  location / {' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    rewrite ^(.*)$ /index.php?p=$1 last;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    break;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '  }' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '  location ~* ^/(.*)\.(ico|css|js|gif|png|jpg|bmp|JPG|jpeg)$ {' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    root /var/www/$MICROBLOG_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    rewrite ^/(.*)$ /$1 break;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    access_log off;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    expires max;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '  }' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '  client_max_body_size      15m;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "  error_log /var/log/nginx/${MICROBLOG_DOMAIN_NAME}_error_ssl.log $WEBSERVER_LOG_LEVEL;" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME

  configure_php

  if [ ! -f /etc/ssl/certs/$MICROBLOG_DOMAIN_NAME.dhparam ]; then
      ${PROJECT_NAME}-addcert -e $MICROBLOG_DOMAIN_NAME -s $LETSENCRYPT_SERVER --dhkey $DH_KEYLENGTH
      check_certificates $MICROBLOG_DOMAIN_NAME
  fi

  # Ensure that the database gets backed up locally, if remote
  # backups are not being used
  backup_databases_script_header
  echo '' >> /usr/bin/backupdatabases
  echo '# Backup the GNU Social database' >> /usr/bin/backupdatabases
  echo 'TEMPFILE=/root/gnusocial.sql' >> /usr/bin/backupdatabases
  echo 'DAILYFILE=/var/backups/gnusocial_daily.sql' >> /usr/bin/backupdatabases
  echo 'mysqldump --password="$MYSQL_PASSWORD" gnusocial > $TEMPFILE' >> /usr/bin/backupdatabases
  echo 'FILESIZE=$(stat -c%s $TEMPFILE)' >> /usr/bin/backupdatabases
  echo 'if [ "$FILESIZE" -eq "0" ]; then' >> /usr/bin/backupdatabases
  echo '    if [ -f $DAILYFILE ]; then' >> /usr/bin/backupdatabases
  echo '        cp $DAILYFILE $TEMPFILE' >> /usr/bin/backupdatabases
  echo '' >> /usr/bin/backupdatabases
  echo '        # try to restore yesterdays database' >> /usr/bin/backupdatabases
  echo '        mysql -u root --password="$MYSQL_PASSWORD" gnusocial -o < $DAILYFILE' >> /usr/bin/backupdatabases
  echo '' >> /usr/bin/backupdatabases
  echo '        # Send a warning email' >> /usr/bin/backupdatabases
  echo '        echo "Unable to create a backup of the GNU Social database. Attempted to restore from yesterdays backup" | mail -s "GNU Social backup" $EMAIL' >> /usr/bin/backupdatabases
  echo '    else' >> /usr/bin/backupdatabases
  echo '        # Send a warning email' >> /usr/bin/backupdatabases
  echo '        echo "Unable to create a backup of the GNU Social database." | mail -s "GNU Social backup" $EMAIL' >> /usr/bin/backupdatabases
  echo '    fi' >> /usr/bin/backupdatabases
  echo 'else' >> /usr/bin/backupdatabases
  echo '    chmod 600 $TEMPFILE' >> /usr/bin/backupdatabases
  echo '    mv $TEMPFILE $DAILYFILE' >> /usr/bin/backupdatabases
  echo '' >> /usr/bin/backupdatabases
  echo '    # Make the backup readable only by root' >> /usr/bin/backupdatabases
  echo '    chmod 600 $DAILYFILE' >> /usr/bin/backupdatabases
  echo 'fi' >> /usr/bin/backupdatabases

  echo '' >> /etc/cron.weekly/backupdatabasesweekly
  echo '# GNU Social' >> /etc/cron.weekly/backupdatabasesweekly
  echo 'if [ -f /var/backups/gnusocial_weekly.sql ]; then' >> /etc/cron.weekly/backupdatabasesweekly
  echo '  cp -f /var/backups/gnusocial_weekly.sql /var/backups/gnusocial_2weekly.sql' >> /etc/cron.weekly/backupdatabasesweekly
  echo 'fi' >> /etc/cron.weekly/backupdatabasesweekly
  echo 'if [ -f /var/backups/gnusocial_daily.sql ]; then' >> /etc/cron.weekly/backupdatabasesweekly
  echo '  cp -f /var/backups/gnusocial_daily.sql /var/backups/gnusocial_weekly.sql' >> /etc/cron.weekly/backupdatabasesweekly
  echo 'fi' >> /etc/cron.weekly/backupdatabasesweekly

  echo '' >> /etc/cron.monthly/backupdatabasesmonthly
  echo '# GNU Social' >> /etc/cron.monthly/backupdatabasesmonthly
  echo 'if [ -f /var/backups/gnusocial_monthly.sql ]; then' >> /etc/cron.monthly/backupdatabasesmonthly
  echo '  cp -f /var/backups/gnusocial_monthly.sql /var/backups/gnusocial_2monthly.sql' >> /etc/cron.monthly/backupdatabasesmonthly
  echo 'fi' >> /etc/cron.monthly/backupdatabasesmonthly
  echo 'if [ -f /var/backups/gnusocial_weekly.sql ]; then' >> /etc/cron.monthly/backupdatabasesmonthly
  echo '  cp -f /var/backups/gnusocial_weekly.sql /var/backups/gnusocial_monthly.sql' >> /etc/cron.monthly/backupdatabasesmonthly
  echo 'fi' >> /etc/cron.monthly/backupdatabasesmonthly

  if ! grep -q "gnusocial" /etc/cron.hourly/repair; then
      echo "${PROJECT_NAME}-repair-database gnusocial" >> /etc/cron.hourly/repair
  fi
  nginx_ensite $MICROBLOG_DOMAIN_NAME
  service php5-fpm restart
  service nginx restart

  # some post-install instructions for the user
  if ! grep -q "To set up your microblog" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Microblog' >> /home/$MY_USERNAME/README
      echo '=========' >> /home/$MY_USERNAME/README
      echo "To set up your microblog go to" >> /home/$MY_USERNAME/README
      echo "https://$MICROBLOG_DOMAIN_NAME/install.php" >> /home/$MY_USERNAME/README
      echo 'and enter the following settings:' >> /home/$MY_USERNAME/README
      echo ' - Set a name for the site' >> /home/$MY_USERNAME/README
      echo ' - Server SSL: enable' >> /home/$MY_USERNAME/README
      echo ' - Hostname: localhost' >> /home/$MY_USERNAME/README
      echo ' - Type: MySql/MariaDB' >> /home/$MY_USERNAME/README
      echo ' - Name: gnusocial' >> /home/$MY_USERNAME/README
      echo ' - DB username: root' >> /home/$MY_USERNAME/README
      echo " - DB Password; $MARIADB_PASSWORD" >> /home/$MY_USERNAME/README
      echo " - Administrator nickname: $MY_USERNAME" >> /home/$MY_USERNAME/README
      echo " - Administrator password: $MICROBLOG_ADMIN_PASSWORD" >> /home/$MY_USERNAME/README
      echo ' - Subscribe to announcements: ticked' >> /home/$MY_USERNAME/README
      echo ' - Site profile: Community' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'When the install is complete you will see a lot of warnings' >> /home/$MY_USERNAME/README
      echo 'but just ignore those and navigate to ' >> /home/$MY_USERNAME/README
      echo "https://$MICROBLOG_DOMAIN_NAME and you can then " >> /home/$MY_USERNAME/README
      echo 'complete the configuration via the *Admin* section on the header' >> /home/$MY_USERNAME/README
      echo 'bar.  Some recommended admin settings are:' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Under the *Site* settings:' >> /home/$MY_USERNAME/README
      echo '    Text limit: 140' >> /home/$MY_USERNAME/README
      echo '    Dupe Limit: 60000' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Under the *User* settings:' >> /home/$MY_USERNAME/README
      echo '    Bio limit: 1000' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Under the *Access* settings:' >> /home/$MY_USERNAME/README
      echo '    /Invite only/ ticked' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
      chmod 600 /home/$MY_USERNAME/README
  fi

  echo "GNU Social domain:$MICROBLOG_DOMAIN_NAME" >> $COMPLETION_FILE
  echo 'install_gnu_social' >> $COMPLETION_FILE
}

function install_hubzilla {
  if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_DEVELOPER" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  if [ ! $HUBZILLA_DOMAIN_NAME ]; then
      return
  fi

  # update to the next commit
  if [ -d /var/www/$HUBZILLA_DOMAIN_NAME/htdocs ]; then
      if grep -q "Hubzilla commit" $COMPLETION_FILE; then
          CURRENT_HUBZILLA_COMMIT=$(grep "Hubzilla commit" $COMPLETION_FILE | awk -F ':' '{print $2}')
          if [[ "$CURRENT_HUBZILLA_COMMIT" != "$HUBZILLA_COMMIT" ]]; then
              cd /var/www/$HUBZILLA_DOMAIN_NAME/htdocs
              git stash
              git checkout master
              git pull
              git checkout $HUBZILLA_COMMIT -b $HUBZILLA_COMMIT
              sed -i "s/Hubzilla commit.*/Hubzilla commit:$HUBZILLA_COMMIT/g" $COMPLETION_FILE
              chown -R www-data:www-data /var/www/$HUBZILLA_DOMAIN_NAME/htdocs
          fi
      else
          echo "Hubzilla commit:$HUBZILLA_COMMIT" >> $COMPLETION_FILE
      fi
  fi

  if grep -Fxq "install_hubzilla" $COMPLETION_FILE; then
      return
  fi

  install_mariadb
  get_mariadb_password
  repair_databases_script

  apt-get -y install php5-common php5-cli php5-curl php5-gd php5-mysql php5-mcrypt git
  apt-get -y install php5-dev imagemagick php5-imagick

  if [ ! -d /var/www/$HUBZILLA_DOMAIN_NAME ]; then
      mkdir /var/www/$HUBZILLA_DOMAIN_NAME
  fi
  if [ ! -d /var/www/$HUBZILLA_DOMAIN_NAME/htdocs ]; then
      mkdir /var/www/$HUBZILLA_DOMAIN_NAME/htdocs
  fi

  if [ ! -f /var/www/$HUBZILLA_DOMAIN_NAME/htdocs/index.php ]; then
      cd $INSTALL_DIR
      git clone $HUBZILLA_REPO hubzilla
      git checkout $HUBZILLA_COMMIT -b $HUBZILLA_COMMIT
      if ! grep -q "Hubzilla commit" $COMPLETION_FILE; then
          echo "Hubzilla commit:$HUBZILLA_COMMIT" >> $COMPLETION_FILE
      else
          sed -i "s/Hubzilla commit.*/Hubzilla commit:$HUBZILLA_COMMIT/g" $COMPLETION_FILE
      fi

      rm -rf /var/www/$HUBZILLA_DOMAIN_NAME/htdocs
      mv hubzilla /var/www/$HUBZILLA_DOMAIN_NAME/htdocs
      chown -R www-data:www-data /var/www/$HUBZILLA_DOMAIN_NAME/htdocs
      git clone $HUBZILLA_ADDONS_REPO /var/www/$HUBZILLA_DOMAIN_NAME/htdocs/addon
      # some extra themes
      git clone https://github.com/DeadSuperHero/redmatrix-themes /var/www/$HUBZILLA_DOMAIN_NAME/htdocs/redmatrix-themes1
      cp -r /var/www/$HUBZILLA_DOMAIN_NAME/htdocs/redmatrix-themes1/* view/theme/
  fi

  get_mariadb_hubzilla_admin_password
  if [ ! $HUBZILLA_ADMIN_PASSWORD ]; then
      if [ -f $IMAGE_PASSWORD_FILE ]; then
          HUBZILLA_ADMIN_PASSWORD="$(printf `cat $IMAGE_PASSWORD_FILE`)"
      else
          HUBZILLA_ADMIN_PASSWORD="$(openssl rand -base64 32)"
      fi
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Hubzilla' >> /home/$MY_USERNAME/README
      echo '==========' >> /home/$MY_USERNAME/README
      echo "Your MariaDB Hubzilla admin password is: $HUBZILLA_ADMIN_PASSWORD" >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
      chmod 600 /home/$MY_USERNAME/README
  fi

  echo "create database hubzilla;
CREATE USER 'hubzillaadmin'@'localhost' IDENTIFIED BY '$HUBZILLA_ADMIN_PASSWORD';
GRANT ALL PRIVILEGES ON hubzilla.* TO 'hubzillaadmin'@'localhost';
quit" > $INSTALL_DIR/batch.sql
  chmod 600 $INSTALL_DIR/batch.sql
  mysql -u root --password="$MARIADB_PASSWORD" < $INSTALL_DIR/batch.sql
  shred -zu $INSTALL_DIR/batch.sql

  if ! grep -q "/var/www/$HUBZILLA_DOMAIN_NAME/htdocs" /etc/crontab; then
      echo "12,22,32,42,52 * *   *   *   root cd /var/www/$HUBZILLA_DOMAIN_NAME/htdocs; /usr/bin/timeout 500 /usr/bin/php include/poller.php" >> /etc/crontab
  fi

  # update the dynamic DNS
  CURRENT_DDNS_DOMAIN=$HUBZILLA_DOMAIN_NAME
  add_ddns_domain

  echo 'server {' > /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    listen 80;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo "    server_name $HUBZILLA_DOMAIN_NAME;" >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo "    root /var/www/$HUBZILLA_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    access_log off;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo "    error_log /var/log/nginx/${HUBZILLA_DOMAIN_NAME}_error.log $WEBSERVER_LOG_LEVEL;" >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    limit_conn conn_limit_per_ip 10;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    limit_req zone=req_limit_per_ip burst=10 nodelay;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    index index.php;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    rewrite ^ https://$server_name$request_uri? permanent;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo 'server {' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    listen 443 ssl;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo "    root /var/www/$HUBZILLA_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo "    server_name $HUBZILLA_DOMAIN_NAME;" >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo "    error_log /var/log/nginx/${HUBZILLA_DOMAIN_NAME}_error_ssl.log $WEBSERVER_LOG_LEVEL;" >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    index index.php;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    charset utf-8;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    client_max_body_size 20m;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    client_body_buffer_size 128k;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    access_log off;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    limit_conn conn_limit_per_ip 10;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    limit_req zone=req_limit_per_ip burst=10 nodelay;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    ssl on;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo "    ssl_certificate /etc/ssl/certs/$HUBZILLA_DOMAIN_NAME.bundle.crt;" >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo "    ssl_certificate_key /etc/ssl/private/$HUBZILLA_DOMAIN_NAME.key;" >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo "    ssl_dhparam /etc/ssl/certs/$HUBZILLA_DOMAIN_NAME.dhparam;" >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    ssl_session_timeout 60m;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    ssl_prefer_server_ciphers on;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    ssl_session_cache  builtin:1000  shared:SSL:10m;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo "    ssl_protocols $SSL_PROTOCOLS; # not possible to do exclusive" >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo "    ssl_ciphers '$SSL_CIPHERS';" >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    add_header X-Frame-Options DENY;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    add_header X-Content-Type-Options nosniff;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    add_header Strict-Transport-Security max-age=15768000;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    # rewrite to front controller as default rule' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    location / {' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '        rewrite ^/(.*) /index.php?q=$uri&$args last;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo "    # make sure webfinger and other well known services aren't blocked" >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    # by denying dot files and rewrite request to the front controller' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    location ^~ /.well-known/ {' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '        allow all;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '        rewrite ^/(.*) /index.php?q=$uri&$args last;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    # statically serve these file types when possible' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    # otherwise fall back to front controller' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    # allow browser to cache them' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    # added .htm for advanced source code editor library' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    location ~* \.(jpg|jpeg|gif|png|ico|css|js|htm|html|ttf|woff|svg)$ {' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '        expires 30d;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '        try_files $uri /index.php?q=$uri&$args;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    # block these file types' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    location ~* \.(tpl|md|tgz|log|out)$ {' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    # or a unix socket' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    location ~* \.php$ {' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '        # Zero-day exploit defense.' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '        # http://forum.nginx.org/read.php?2,88845,page=3' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo "        # Won't work properly (404 error) if the file is not stored on this" >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo "        # server, which is entirely possible with php-fpm/php-fcgi." >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo "        # Comment the 'try_files' line out if you set up php-fpm/php-fcgi on" >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo "        # another machine. And then cross your fingers that you won't get hacked." >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '        try_files $uri $uri/ /index.php;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '        # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '        fastcgi_split_path_info ^(.+\.php)(/.+)$;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '        # With php5-cgi alone:' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '        # fastcgi_pass 127.0.0.1:9000;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '        # With php5-fpm:' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '        fastcgi_pass unix:/var/run/php5-fpm.sock;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '        include fastcgi_params;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '        fastcgi_index index.php;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '        fastcgi_read_timeout 300;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    # deny access to all dot files' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    location ~ /\. {' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    location ~ /\.ht {' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '      deny  all;' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME

  configure_php

  if [ ! -f /etc/ssl/certs/$HUBZILLA_DOMAIN_NAME.dhparam ]; then
      ${PROJECT_NAME}-addcert -e $HUBZILLA_DOMAIN_NAME -s $LETSENCRYPT_SERVER --dhkey $DH_KEYLENGTH
      check_certificates $HUBZILLA_DOMAIN_NAME
  fi

  if [ ! -d /var/www/$HUBZILLA_DOMAIN_NAME/htdocs/view/tpl/smarty3 ]; then
      mkdir /var/www/$HUBZILLA_DOMAIN_NAME/htdocs/view/tpl/smarty3
  fi
  if [ ! -d "/var/www/$HUBZILLA_DOMAIN_NAME/htdocs/store" ]; then
      mkdir "/var/www/$HUBZILLA_DOMAIN_NAME/htdocs/store"
  fi
  if [ ! -d "/var/www/$HUBZILLA_DOMAIN_NAME/htdocs/store/[data]" ]; then
      mkdir "/var/www/$HUBZILLA_DOMAIN_NAME/htdocs/store/[data]"
  fi
  if [ ! -d "/var/www/$HUBZILLA_DOMAIN_NAME/htdocs/store/[data]/smarty3" ]; then
      mkdir "/var/www/$HUBZILLA_DOMAIN_NAME/htdocs/store/[data]/smarty3"
      chmod 777 "/var/www/$HUBZILLA_DOMAIN_NAME/htdocs/store/[data]/smarty3"
  fi
  chmod 777 /var/www/$HUBZILLA_DOMAIN_NAME/htdocs/view/tpl
  chown -R www-data:www-data "/var/www/$HUBZILLA_DOMAIN_NAME/htdocs/store"
  chmod 777 /var/www/$HUBZILLA_DOMAIN_NAME/htdocs/view/tpl/smarty3

  # Ensure that the database gets backed up locally, if remote
  # backups are not being used
  backup_databases_script_header
  echo '' >> /usr/bin/backupdatabases
  echo '# Backup the Hubzilla database' >> /usr/bin/backupdatabases
  echo 'TEMPFILE=/root/hubzilla.sql' >> /usr/bin/backupdatabases
  echo 'DAILYFILE=/var/backups/hubzilla_daily.sql' >> /usr/bin/backupdatabases
  echo 'mysqldump --password="$MYSQL_PASSWORD" hubzilla > $TEMPFILE' >> /usr/bin/backupdatabases
  echo 'FILESIZE=$(stat -c%s $TEMPFILE)' >> /usr/bin/backupdatabases
  echo 'if [ "$FILESIZE" -lt "1024" ]; then' >> /usr/bin/backupdatabases
  echo '    if [ -f $DAILYFILE ]; then' >> /usr/bin/backupdatabases
  echo '        cp $DAILYFILE $TEMPFILE' >> /usr/bin/backupdatabases
  echo '' >> /usr/bin/backupdatabases
  echo '        # try to restore yesterdays database' >> /usr/bin/backupdatabases
  echo '        mysql -u root --password="$MYSQL_PASSWORD" hubzilla -o < $DAILYFILE' >> /usr/bin/backupdatabases
  echo '' >> /usr/bin/backupdatabases
  echo '        # Send a warning email' >> /usr/bin/backupdatabases
  echo '        echo "Unable to create a backup of the Hubzilla database. Attempted to restore from yesterdays backup" | mail -s "Hubzilla backup" $EMAIL' >> /usr/bin/backupdatabases
  echo '    else' >> /usr/bin/backupdatabases
  echo '        # Send a warning email' >> /usr/bin/backupdatabases
  echo '        echo "Unable to create a backup of the Hubzilla database." | mail -s "Hubzilla backup" $EMAIL' >> /usr/bin/backupdatabases
  echo '    fi' >> /usr/bin/backupdatabases
  echo 'else' >> /usr/bin/backupdatabases
  echo '    chmod 600 $TEMPFILE' >> /usr/bin/backupdatabases
  echo '    mv $TEMPFILE $DAILYFILE' >> /usr/bin/backupdatabases
  echo '' >> /usr/bin/backupdatabases
  echo '    # Make the backup readable only by root' >> /usr/bin/backupdatabases
  echo '    chmod 600 $DAILYFILE' >> /usr/bin/backupdatabases
  echo 'fi' >> /usr/bin/backupdatabases

  echo '' >> /etc/cron.weekly/backupdatabasesweekly
  echo '# Hubzilla' >> /etc/cron.weekly/backupdatabasesweekly
  echo 'if [ -f /var/backups/hubzilla_weekly.sql ]; then' >> /etc/cron.weekly/backupdatabasesweekly
  echo '  cp -f /var/backups/hubzilla_weekly.sql /var/backups/hubzilla_2weekly.sql' >> /etc/cron.weekly/backupdatabasesweekly
  echo 'fi' >> /etc/cron.weekly/backupdatabasesweekly
  echo 'if [ -f /var/backups/hubzilla_daily.sql ]; then' >> /etc/cron.weekly/backupdatabasesweekly
  echo '  cp -f /var/backups/hubzilla_daily.sql /var/backups/hubzilla_weekly.sql' >> /etc/cron.weekly/backupdatabasesweekly
  echo 'fi' >> /etc/cron.weekly/backupdatabasesweekly

  echo '' >> /etc/cron.monthly/backupdatabasesmonthly
  echo '# Hubzilla' >> /etc/cron.monthly/backupdatabasesmonthly
  echo 'if [ -f /var/backups/hubzilla_monthly.sql ]; then' >> /etc/cron.monthly/backupdatabasesmonthly
  echo '  cp -f /var/backups/hubzilla_monthly.sql /var/backups/hubzilla_2monthly.sql' >> /etc/cron.monthly/backupdatabasesmonthly
  echo 'fi' >> /etc/cron.monthly/backupdatabasesmonthly
  echo 'if [ -f /var/backups/hubzilla_weekly.sql ]; then' >> /etc/cron.monthly/backupdatabasesmonthly
  echo '  cp -f /var/backups/hubzilla_weekly.sql /var/backups/hubzilla_monthly.sql' >> /etc/cron.monthly/backupdatabasesmonthly
  echo 'fi' >> /etc/cron.monthly/backupdatabasesmonthly

  if ! grep -q "hubzilla" /etc/cron.hourly/repair; then
      echo "${PROJECT_NAME}-repair-database hubzilla" >> /etc/cron.hourly/repair
      # remove legacy stuff
      sed -i 's|/usr/bin/repairdatabase redmatrix||g' /etc/cron.hourly/repair
  fi

  chown -R www-data:www-data /var/www/$HUBZILLA_DOMAIN_NAME/htdocs

  nginx_ensite $HUBZILLA_DOMAIN_NAME
  service php5-fpm restart
  service nginx restart
  service cron restart

  # some post-install instructions for the user
  if ! grep -q "To set up your Hubzilla" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo "To set up your Hubzilla site go to" >> /home/$MY_USERNAME/README
      echo "https://$HUBZILLA_DOMAIN_NAME" >> /home/$MY_USERNAME/README
      echo 'You will need to have a non self-signed SSL certificate in order' >> /home/$MY_USERNAME/README
      echo "to use Hubzilla. Put the public certificate in /etc/ssl/certs/$HUBZILLA_DOMAIN_NAME.crt" >> /home/$MY_USERNAME/README
      echo "and the private certificate in /etc/ssl/private/$HUBZILLA_DOMAIN_NAME.key." >> /home/$MY_USERNAME/README
      echo 'If there is an intermediate certificate needed (such as with StartSSL) then' >> /home/$MY_USERNAME/README
      echo 'this will need to be concatenated onto the end of the crt file, like this:' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo "  cat /etc/ssl/certs/$HUBZILLA_DOMAIN_NAME.crt /etc/ssl/chains/startssl-sub.class1.server.ca.pem > /etc/ssl/certs/$HUBZILLA_DOMAIN_NAME.bundle.crt" >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo "Then change ssl_certificate to /etc/ssl/certs/$HUBZILLA_DOMAIN_NAME.bundle.crt" >> /home/$MY_USERNAME/README
      echo "within /etc/nginx/sites-available/$HUBZILLA_DOMAIN_NAME" >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
      chmod 600 /home/$MY_USERNAME/README
  fi

  echo "Hubzilla domain:$HUBZILLA_DOMAIN_NAME" >> $COMPLETION_FILE
  echo 'install_hubzilla' >> $COMPLETION_FILE
}

function script_for_attaching_usb_drive {
  if grep -Fxq "script_for_attaching_usb_drive" $COMPLETION_FILE; then
      return
  fi
  echo '#!/bin/bash' > /usr/bin/attach-music
  echo 'remove-music' >> /usr/bin/attach-music
  echo "if [ ! -d $USB_MOUNT ]; then" >> /usr/bin/attach-music
  echo "  mkdir $USB_MOUNT" >> /usr/bin/attach-music
  echo 'fi' >> /usr/bin/attach-music
  echo "mount /dev/sda1 $USB_MOUNT" >> /usr/bin/attach-music
  echo "chown root:root $USB_MOUNT" >> /usr/bin/attach-music
  echo "chown -R minidlna:minidlna $USB_MOUNT/*" >> /usr/bin/attach-music
  echo 'service minidlna restart' >> /usr/bin/attach-music
  echo 'minidlnad -R' >> /usr/bin/attach-music
  chmod +x /usr/bin/attach-music
  ln -s /usr/bin/attach-music /usr/bin/attach-usb
  ln -s /usr/bin/attach-music /usr/bin/attach-videos
  ln -s /usr/bin/attach-music /usr/bin/attach-pictures
  ln -s /usr/bin/attach-music /usr/bin/attach-media

  echo '#!/bin/bash' > /usr/bin/remove-music
  echo "if [ -d $USB_MOUNT ]; then" >> /usr/bin/remove-music
  echo "  umount $USB_MOUNT" >> /usr/bin/remove-music
  echo "  rm -rf $USB_MOUNT" >> /usr/bin/remove-music
  echo 'fi' >> /usr/bin/remove-music
  chmod +x /usr/bin/remove-music
  ln -s /usr/bin/remove-music /usr/bin/detach-music
  ln -s /usr/bin/remove-music /usr/bin/detach-usb
  ln -s /usr/bin/remove-music /usr/bin/remove-usb
  ln -s /usr/bin/remove-music /usr/bin/detach-media
  ln -s /usr/bin/remove-music /usr/bin/remove-media
  ln -s /usr/bin/remove-music /usr/bin/detach-videos
  ln -s /usr/bin/remove-music /usr/bin/remove-videos
  ln -s /usr/bin/remove-music /usr/bin/detach-pictures
  ln -s /usr/bin/remove-music /usr/bin/remove-pictures

  echo 'script_for_attaching_usb_drive' >> $COMPLETION_FILE
}

function install_dlna_server {
  if grep -Fxq "install_dlna_server" $COMPLETION_FILE; then
      return
  fi
  if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_DEVELOPER" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  apt-get -y install minidlna

  if [ ! -f /etc/minidlna.conf ]; then
      echo "ERROR: minidlna does not appear to have installed. $CHECK_MESSAGE"
      exit 55
  fi

  sed -i "s|media_dir=/var/lib/minidlna|media_dir=A,/home/$MY_USERNAME/Music|g" /etc/minidlna.conf
  if ! grep -q "/home/$MY_USERNAME/Pictures" /etc/minidlna.conf; then
    echo "media_dir=P,/home/$MY_USERNAME/Pictures" >> /etc/minidlna.conf
  fi
  if ! grep -q "/home/$MY_USERNAME/Videos" /etc/minidlna.conf; then
      echo "media_dir=V,/home/$MY_USERNAME/Videos" >> /etc/minidlna.conf
  fi
  if ! grep -q "$USB_MOUNT/Music" /etc/minidlna.conf; then
      echo "media_dir=A,$USB_MOUNT/Music" >> /etc/minidlna.conf
  fi
  if ! grep -q "$USB_MOUNT/Pictures" /etc/minidlna.conf; then
      echo "media_dir=P,$USB_MOUNT/Pictures" >> /etc/minidlna.conf
  fi
  if ! grep -q "$USB_MOUNT/Videos" /etc/minidlna.conf; then
      echo "media_dir=V,$USB_MOUNT/Videos" >> /etc/minidlna.conf
  fi
  sed -i 's/#root_container=./root_container=B/g' /etc/minidlna.conf
  if [[ $SYSTEM_TYPE != "$VARIANT_MESH" ]]; then
      sed -i 's/#network_interface=/network_interface=eth0/g' /etc/minidlna.conf
  else
      sed -i 's/#network_interface=/network_interface=$WIFI_INTERFACE/g' /etc/minidlna.conf
  fi
  sed -i 's/#friendly_name=/friendly_name="Freedombone Media"/g' /etc/minidlna.conf
  sed -i 's|#db_dir=/var/cache/minidlna|db_dir=/var/cache/minidlna|g' /etc/minidlna.conf
  sed -i 's/#inotify=yes/inotify=yes/g' /etc/minidlna.conf
  sed -i 's/#notify_interval=895/notify_interval=300/g' /etc/minidlna.conf
  sed -i "s|#presentation_url=/|presentation_url=http://localhost:8200|g" /etc/minidlna.conf
  service minidlna force-reload
  service minidlna reload

  sed -i 's/fs.inotify.max_user_watches*/fs.inotify.max_user_watches=65536/g' /etc/sysctl.conf
  if ! grep -q "max_user_watches" $COMPLETION_FILE; then
      echo 'fs.inotify.max_user_watches=65536' >> /etc/sysctl.conf
  fi
  /sbin/sysctl -p


  echo 'install_dlna_server' >> $COMPLETION_FILE
}

function install_mediagoblin {
  return
  if grep -Fxq "install_mediagoblin" $COMPLETION_FILE; then
      return
  fi
  if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_DEVELOPER" || $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  if [ ! $MEDIAGOBLIN_DOMAIN_NAME ]; then
      return
  fi

  apt-get -y install git-core python python-dev python-lxml python-imaging python-virtualenv
  apt-get -y install postgresql postgresql-client python-psycopg2
  apt-get -y install python-gst-1.0 libjpeg62-turbo-dev gstreamer1.0-plugins-base python-gobject
  apt-get -y install gstreamer1.0-plugins-good gstreamer1.0-libav libav-tools gstreamer0.10-tools
  apt-get -y install python-numpy python-scipy libsndfile1-dev python-gst0.10-dev
  apt-get -y install gstreamer0.10-plugins-base gstreamer0.10-plugins-good gstreamer1.0-tools
  su -c "createuser -A -D mediagoblin" - postgres
  su -c "createdb -E UNICODE -O mediagoblin mediagoblin" - postgres
  adduser --disabled-login --gecos 'Mediagoblin' mediagoblin

  MEDIAGOBLIN_DOMAIN_ROOT="/home/mediagoblin"
  MEDIAGOBLIN_PATH="$MEDIAGOBLIN_DOMAIN_ROOT/mediagoblin"
  MEDIAGOBLIN_PATH_BIN="$MEDIAGOBLIN_PATH/mediagoblin/bin"
  mkdir -p $MEDIAGOBLIN_DOMAIN_ROOT
  chown -hR mediagoblin: $MEDIAGOBLIN_DOMAIN_ROOT
  su -c "cd $MEDIAGOBLIN_DOMAIN_ROOT; git clone $MEDIAGOBLIN_REPO" - mediagoblin
  cd $MEDIAGOBLIN_DOMAIN_ROOT
  git checkout -q v0.7.1
  su -c "cd $MEDIAGOBLIN_PATH; git submodule init" - mediagoblin
  su -c "cd $MEDIAGOBLIN_PATH; git submodule update" - mediagoblin
  su -c "cd $MEDIAGOBLIN_PATH; (virtualenv --python=python2 --system-site-packages . || cd $MEDIAGOBLIN_PATH; virtualenv --python=python2 .) && ./bin/python setup.py develop" - mediagoblin
  su -c "cd $MEDIAGOBLIN_PATH; ./bin/easy_install flup" - mediagoblin
  if [ -f $MEDIAGOBLIN_PATH/lib/python2.7/no-global-site-packages.txt ]; then
      virtualenv deactivate
      rm -f $MEDIAGOBLIN_PATH/lib/python2.7/no-global-site-packages.txt
      su -c "cd $MEDIAGOBLIN_PATH; source bin/activate" - mediagoblin
  fi
  if [ -f $MEDIAGOBLIN_PATH/mediagoblin.example.ini ]; then
      # this is for versions > 0.7.1
      su -c "cp $MEDIAGOBLIN_PATH/mediagoblin.example.ini $MEDIAGOBLIN_PATH/mediagoblin_local.ini" - mediagoblin
      sed -i 's|# data_basedir.*|data_basedir = "/var/lib/mediagoblin"|g' $MEDIAGOBLIN_PATH/mediagoblin_local.ini
  else
      su -c "cp $MEDIAGOBLIN_PATH/mediagoblin.ini $MEDIAGOBLIN_PATH/mediagoblin_local.ini" - mediagoblin
  fi
  sed -i 's|# sql_engine.*|sql_engine = postgresql:///mediagoblin|g' $MEDIAGOBLIN_PATH/mediagoblin_local.ini
  sed -i "s/email_sender_address.*/email_sender_address = \"$MY_EMAIL_ADDRESS\"/g" $MEDIAGOBLIN_PATH/mediagoblin_local.ini
  sed -i 's|email_debug_mode.*|email_debug_mode = false|g' $MEDIAGOBLIN_PATH/mediagoblin_local.ini

  # add extra media types
  if ! grep -q "media_types.stl" $MEDIAGOBLIN_PATH/mediagoblin_local.ini; then
      echo '[[mediagoblin.media_types.stl]]' >> $MEDIAGOBLIN_PATH/mediagoblin_local.ini
  fi
  if ! grep -q "media_types.audio" $MEDIAGOBLIN_PATH/mediagoblin_local.ini; then
      echo '[[mediagoblin.media_types.audio]]' >> $MEDIAGOBLIN_PATH/mediagoblin_local.ini
  fi
  if ! grep -q "media_types.video" $MEDIAGOBLIN_PATH/mediagoblin_local.ini; then
      echo '[[mediagoblin.media_types.video]]' >> $MEDIAGOBLIN_PATH/mediagoblin_local.ini
  fi

  #su -c 'cd $MEDIAGOBLIN_PATH; ./bin/pip install scikits.audiolab' - mediagoblin

  #su -c "cd $MEDIAGOBLIN_PATH; git submodule update && ./bin/python setup.py develop --upgrade && ./bin/gmg dbupdate" - mediagoblin
  su -c "cd $MEDIAGOBLIN_PATH; ./bin/gmg dbupdate" - mediagoblin


  echo 'server {' > /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    listen 80;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo "    server_name $MEDIAGOBLIN_DOMAIN_NAME;" >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    access_log off;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo "    error_log /var/log/nginx/${MEDIAGOBLIN_DOMAIN_NAME}_error.log $WEBSERVER_LOG_LEVEL;" >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    limit_conn conn_limit_per_ip 10;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    limit_req zone=req_limit_per_ip burst=10 nodelay;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    location / {' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        proxy_pass http://localhost:6543;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    location ^~ /auth/ {' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        rewrite ^ https://$server_name$request_uri?;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    location ^~ /u/ {' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        rewrite ^ https://$server_name$request_uri?;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    location ^~ /submit/ {' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        rewrite ^ https://$server_name$request_uri?;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo 'server {' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    listen 443 ssl;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo "    root /var/www/$MEDIAGOBLIN_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo "    server_name $MEDIAGOBLIN_DOMAIN_NAME;" >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    access_log off;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo "    error_log /var/log/nginx/${MEDIAGOBLIN_DOMAIN_NAME}_error.log $WEBSERVER_LOG_LEVEL;" >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    limit_conn conn_limit_per_ip 10;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    limit_req zone=req_limit_per_ip burst=10 nodelay;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    ssl on;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo "    ssl_certificate /etc/ssl/certs/$MEDIAGOBLIN_DOMAIN_NAME.crt;" >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo "    ssl_certificate_key /etc/ssl/private/$MEDIAGOBLIN_DOMAIN_NAME.key;" >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo "    ssl_dhparam /etc/ssl/certs/$MEDIAGOBLIN_DOMAIN_NAME.dhparam;" >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    ssl_session_timeout 60m;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    ssl_prefer_server_ciphers on;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo "    ssl_protocols $SSL_PROTOCOLS; # not possible to do exclusive" >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo "    ssl_ciphers '$SSL_CIPHERS';" >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    add_header X-Frame-Options DENY;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    add_header X-Content-Type-Options nosniff;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    add_header Strict-Transport-Security max-age=0;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    location / {' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        proxy_pass http://localhost:6543;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    client_max_body_size 10G; # set max upload size' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    client_body_buffer_size 128k;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    fastcgi_buffers 64 4K;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    error_page 403 /core/templates/403.php;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    error_page 404 /core/templates/404.php;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    location = /robots.txt {' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        allow all;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        log_not_found off;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        access_log off;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME

  if [ ! -f /etc/ssl/certs/$MEDIAGOBLIN_DOMAIN_NAME.dhparam ]; then
      if [[ $LETSENCRYPT_ENABLED != "yes" ]]; then
          ${PROJECT_NAME}-addcert -h $MEDIAGOBLIN_DOMAIN_NAME --dhkey $DH_KEYLENGTH
      else
          ${PROJECT_NAME}-addcert -e $MEDIAGOBLIN_DOMAIN_NAME -s $LETSENCRYPT_SERVER --dhkey $DH_KEYLENGTH
      fi
      check_certificates $MEDIAGOBLIN_DOMAIN_NAME
  fi

  nginx_ensite $MEDIAGOBLIN_DOMAIN_NAME
  service php5-fpm restart
  service nginx restart
  /usr/sbin/nginx -s reload

  # update the dynamic DNS
  CURRENT_DDNS_DOMAIN=$MEDIAGOBLIN_DOMAIN_NAME
  add_ddns_domain

  # init with systemd
  echo '[Unit]' > /etc/systemd/system/mediagoblin.service
  echo 'Description=Mediagoblin (Media Server)' >> /etc/systemd/system/mediagoblin.service
  echo 'After=syslog.target' >> /etc/systemd/system/mediagoblin.service
  echo 'After=network.target' >> /etc/systemd/system/mediagoblin.service
  echo 'After=postgresql.service' >> /etc/systemd/system/mediagoblin.service
  echo '' >> /etc/systemd/system/mediagoblin.service
  echo '[Service]' >> /etc/systemd/system/mediagoblin.service
  echo 'Type=simple' >> /etc/systemd/system/mediagoblin.service
  echo 'User=mediagoblin' >> /etc/systemd/system/mediagoblin.service
  echo 'Group=mediagoblin' >> /etc/systemd/system/mediagoblin.service
  echo 'WorkingDirectory=/home/mediagoblin/mediagoblin' >> /etc/systemd/system/mediagoblin.service
  echo 'ExecStart=/home/mediagoblin/mediagoblin/lazyserver.sh --server-name=broadcast' >> /etc/systemd/system/mediagoblin.service
  echo 'Restart=always' >> /etc/systemd/system/mediagoblin.service
  echo 'Environment="USER=mediagoblin","HOME=/home/mediagoblin"' >> /etc/systemd/system/mediagoblin.service
  echo '' >> /etc/systemd/system/mediagoblin.service
  echo '[Install]' >> /etc/systemd/system/mediagoblin.service
  echo 'WantedBy=multi-user.target' >> /etc/systemd/system/mediagoblin.service
  systemctl enable mediagoblin
  systemctl restart mediagoblin

  echo 'install_mediagoblin' >> $COMPLETION_FILE
}

function create_upgrade_script {
  if [ -f /usr/local/bin/${PROJECT_NAME}-upgrade ]; then
      cp /usr/local/bin/${PROJECT_NAME}-upgrade /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
  else
      cp /usr/bin/${PROJECT_NAME}-upgrade /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
  fi

  if grep -Fxq "create_upgrade_script" $COMPLETION_FILE; then
      return
  fi

  apt-get -y install unattended-upgrades

  echo 'create_upgrade_script' >> $COMPLETION_FILE
}

function intrusion_detection {
  if grep -Fxq "intrusion_detection" $COMPLETION_FILE; then
      return
  fi
  if [[ $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi
  apt-get -y install tripwire
  apt-get -y autoremove
  cd /etc/tripwire
  cp site.key $DEFAULT_DOMAIN_NAME-site.key
  echo '*** Installing intrusion detection ***'
  echo '

' | tripwire --init

  # make a script for easy resetting of the tripwire
  echo '#!/bin/sh' > /usr/bin/reset-tripwire
  echo 'tripwire --update-policy --secure-mode low /etc/tripwire/twpol.txt' >> /usr/bin/reset-tripwire
  chmod +x /usr/bin/reset-tripwire

  sed -i 's/SYSLOGREPORTING.*/SYSLOGREPORTING =false/g' /etc/tripwire/twcfg.txt
  # only send emails if something has changed
  sed -i 's|MAILNOVIOLATIONS.*|MAILNOVIOLATIONS = false|g' /etc/tripwire/twcfg.txt
  sed -i '/# These files change the behavior of the root account/,/}/ s/.*//g' /etc/tripwire/twpol.txt
  sed -i 's|/etc/rc.boot.*||g' /etc/tripwire/twpol.txt
  # Don't show any changes to /proc
  sed -i 's|/proc.*||g' /etc/tripwire/twpol.txt
  # Don't report log changes
  sed -i 's|/var/log.*||g' /etc/tripwire/twpol.txt
  # Ignore /etc/tripwire
  if ! grep -q "!/etc/tripwire" /etc/tripwire/twpol.txt; then
          sed -i '\|/etc\t\t->.*|a\        !/etc/tripwire;' /etc/tripwire/twpol.txt
  fi
  # Avoid logging the changed database
  sed -i 's|$(TWETC)/tw.pol.*||g' /etc/tripwire/twpol.txt
  # recreate the configuration
  echo '

' | twadmin --create-cfgfile -S /etc/tripwire/site.key /etc/tripwire/twcfg.txt
  # reset
  echo '



' | reset-tripwire

  echo 'intrusion_detection' >> $COMPLETION_FILE
}

# see https://trac.torproject.org/projects/tor/wiki/doc/TransparentProxy
# Local Redirection and Anonymizing Middlebox
function route_outgoing_traffic_through_tor {
  if grep -Fxq "route_outgoing_traffic_through_tor" $COMPLETION_FILE; then
      return
  fi
  if [[ $ROUTE_THROUGH_TOR != "yes" ]]; then
      return
  fi
  apt-get -y install tor tor-arm

  ### set variables
  # Destinations you don't want routed through Tor
  _non_tor="192.168.1.0/24 192.168.0.0/24"

  # The user that Tor runs as
  _tor_uid="debian-tor"

  # Tor's TransPort
  _trans_port="9040"

  # Your internal interface
  _int_if="eth0"

  ### Set iptables *nat
  iptables -t nat -A OUTPUT -o lo -j RETURN
  iptables -t nat -A OUTPUT -m owner --uid-owner $_tor_uid -j RETURN
  iptables -t nat -A OUTPUT -p udp --dport 53 -j REDIRECT --to-ports 53

  # Allow clearnet access for hosts in $_non_tor
  for _clearnet in $_non_tor; do
      iptables -t nat -A OUTPUT -d $_clearnet -j RETURN
      iptables -t nat -A PREROUTING -i $_int_if -d $_clearnet -j RETURN
  done

  # Redirect all other pre-routing and output to Tor
  iptables -t nat -A OUTPUT -p tcp --syn -j REDIRECT --to-ports $_trans_port
  iptables -t nat -A PREROUTING -i $_int_if -p udp --dport 53 -j REDIRECT --to-ports 53
  iptables -t nat -A PREROUTING -i $_int_if -p tcp --syn -j REDIRECT --to-ports $_trans_port

  ### set iptables *filter
  iptables -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

  # Allow clearnet access for hosts in $_non_tor
  for _clearnet in $_non_tor 127.0.0.0/8; do
      iptables -A OUTPUT -d $_clearnet -j ACCEPT
  done

  # Allow only Tor output
  iptables -A OUTPUT -m owner --uid-owner $_tor_uid -j ACCEPT
  iptables -A OUTPUT -j REJECT

  save_firewall_settings

  if ! grep -q "fs.file-max" /etc/sysctl.conf; then
      echo "fs.file-max=100000" >> /etc/sysctl.conf
      /sbin/sysctl -p
  fi

  echo 'domain localdomain' > /etc/resolv.conf
  echo 'search localdomain' >> /etc/resolv.conf
  echo 'nameserver 127.0.0.1' >> /etc/resolv.conf

  if ! grep -q "VirtualAddrNetworkIPv4" /etc/tor/torrc; then
      echo 'VirtualAddrNetworkIPv4 10.192.0.0/10' >> /etc/tor/torrc
  fi

  if ! grep -q "AutomapHostsOnResolve" /etc/tor/torrc; then
      echo 'AutomapHostsOnResolve 1' >> /etc/tor/torrc
  fi

  if ! grep -q "TransPort" /etc/tor/torrc; then
      echo 'TransPort 9040' >> /etc/tor/torrc
  fi

  if ! grep -q "TransListenAddress 127.0.0.1" /etc/tor/torrc; then
      echo 'TransListenAddress 127.0.0.1' >> /etc/tor/torrc
  fi

  if ! grep -q "TransListenAddress $LOCAL_NETWORK_STATIC_IP_ADDRESS" /etc/tor/torrc; then
      echo "TransListenAddress $LOCAL_NETWORK_STATIC_IP_ADDRESS" >> /etc/tor/torrc
  fi

  if ! grep -q "DNSPort" /etc/tor/torrc; then
      echo 'DNSPort 53' >> /etc/tor/torrc
  fi

  if ! grep -q "DNSListenAddress 127.0.0.1" /etc/tor/torrc; then
      echo 'DNSListenAddress 127.0.0.1' >> /etc/tor/torrc
  fi

  if ! grep -q "DNSListenAddress $LOCAL_NETWORK_STATIC_IP_ADDRESS" /etc/tor/torrc; then
      echo "DNSListenAddress $LOCAL_NETWORK_STATIC_IP_ADDRESS" >> /etc/tor/torrc
  fi

  echo 'route_outgoing_traffic_through_tor' >> $COMPLETION_FILE
}

# A command to create a git repository for a project
function create_git_project {
  if grep -Fxq "create_git_project" $COMPLETION_FILE; then
      return
  fi
  apt-get -y install git

  echo '#!/bin/bash' > /usr/bin/$CREATE_GIT_PROJECT_COMMAND
  echo '' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
  echo 'GIT_PROJECT_NAME=$1' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
  echo 'if [ ! $GIT_PROJECT_NAME ]; then' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
  echo '  echo "Please specify a project name, without any spaces"' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
  echo '  exit 1' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
  echo 'fi' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
  echo '' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
  echo 'if [ ! -d /home/$USER/projects/$GIT_PROJECT_NAME ]; then' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
  echo '  mkdir -p /home/$USER/projects/$GIT_PROJECT_NAME' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
  echo 'fi' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
  echo '' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
  echo 'cd /home/$USER/projects/$GIT_PROJECT_NAME' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
  echo 'git init --bare' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
  echo '' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
  echo -n 'echo "Your project has been created, ' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
  echo 'use the following command to clone the repository"' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
  echo -n "  git clone ssh://$MY_USERNAME@$DEFAULT_DOMAIN_NAME:$SSH_PORT" >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
  echo '/home/$USER/projects/$GIT_PROJECT_NAME' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
  echo '' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
  echo 'exit 0' >> /usr/bin/$CREATE_GIT_PROJECT_COMMAND
  chmod +x /usr/bin/$CREATE_GIT_PROJECT_COMMAND

  echo 'create_git_project' >> $COMPLETION_FILE
}

function check_date {
  curr_date=$(date)
  if [[ $curr_date == *"1970"* ]]; then
      apt-get -y install ntp
  fi
}

function install_dynamicdns {
  if [[ $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
      return
  fi

  # update to the next commit
  if [ -d $INSTALL_DIR/inadyn ]; then
      if grep -q "inadyn commit" $COMPLETION_FILE; then
          CURRENT_INADYN_COMMIT=$(grep "inadyn commit" $COMPLETION_FILE | awk -F ':' '{print $2}')
          if [[ "$CURRENT_INADYN_COMMIT" != "$INADYN_COMMIT" ]]; then
              cd $INSTALL_DIR/inadyn
              git stash
              git checkout master
              git pull
              git checkout $INADYN_COMMIT -b $INADYN_COMMIT
              sed -i "s/inadyn commit.*/inadyn commit:$INADYN_COMMIT/g" $COMPLETION_FILE
              ./configure
              USE_OPENSSL=1 make
              make install
              systemctl restart inadyn
          fi
      else
          echo "inadyn commit:$INADYN_COMMIT" >> $COMPLETION_FILE
      fi
  fi

  if grep -Fxq "install_dynamicdns" $COMPLETION_FILE; then
      return
  fi

  # Here we compile from source because the current package
  # doesn't support https, which could result in passwords
  # being leaked
  # Debian version 1.99.4-1
  # https version 1.99.8

  apt-get -y install build-essential curl libgnutls28-dev automake1.11
  git clone $INADYN_REPO $INSTALL_DIR/inadyn
  if [ ! -d $INSTALL_DIR/inadyn ]; then
      echo 'inadyn repo not cloned'
      echo -n | openssl s_client -showcerts -connect github.com:443 -CApath /etc/ssl/certs
      exit 6785
  fi
  cd $INSTALL_DIR/inadyn
  git checkout $INADYN_COMMIT -b $INADYN_COMMIT
  if ! grep -q "inadyn commit" $COMPLETION_FILE; then
      echo "inadyn commit:$INADYN_COMMIT" >> $COMPLETION_FILE
  else
      sed -i "s/inadyn commit.*/inadyn commit:$INADYN_COMMIT/g" $COMPLETION_FILE
  fi

  ./configure
  if [ ! "$?" = "0" ]; then
      exit 74890
  fi
  USE_OPENSSL=1 make
  if [ ! "$?" = "0" ]; then
      exit 74858
  fi
  make install
  if [ ! "$?" = "0" ]; then
      exit 3785
  fi

  # create an unprivileged user
  #useradd -r -s /bin/false debian-inadyn

  # create a configuration file
  echo 'background' > /etc/inadyn.conf
  echo 'verbose        1' >> /etc/inadyn.conf
  echo 'period         300' >> /etc/inadyn.conf
  echo 'startup-delay  60' >> /etc/inadyn.conf
  echo 'cache-dir      /run/inadyn' >> /etc/inadyn.conf
  echo 'logfile        /dev/null' >> /etc/inadyn.conf
  chmod 600 /etc/inadyn.conf

  echo '[Unit]' > /etc/systemd/system/inadyn.service
  echo 'Description=inadyn (DynDNS updater)' >> /etc/systemd/system/inadyn.service
  echo 'After=network.target' >> /etc/systemd/system/inadyn.service
  echo '' >> /etc/systemd/system/inadyn.service
  echo '[Service]' >> /etc/systemd/system/inadyn.service
  echo 'ExecStart=/usr/local/sbin/inadyn --config /etc/inadyn.conf' >> /etc/systemd/system/inadyn.service
  echo 'Restart=always' >> /etc/systemd/system/inadyn.service
  echo 'Type=forking' >> /etc/systemd/system/inadyn.service
  echo '' >> /etc/systemd/system/inadyn.service
  echo '[Install]' >> /etc/systemd/system/inadyn.service
  echo 'WantedBy=multi-user.target' >> /etc/systemd/system/inadyn.service
  systemctl enable inadyn
  systemctl start inadyn
  systemctl daemon-reload

  echo 'install_dynamicdns' >> $COMPLETION_FILE
}

function get_voip_server_password {
  if [ -f /home/$MY_USERNAME/README ]; then
      if grep -q "VoIP server password" /home/$MY_USERNAME/README; then
          if [ ! $VOIP_SERVER_PASSWORD ]; then
              VOIP_SERVER_PASSWORD=$(cat /home/$MY_USERNAME/README | grep "VoIP server password" | awk -F ':' '{print $2}' | sed 's/^ *//')
          fi
      fi
  fi
}

function get_sip_server_password {
  if [ -f /home/$MY_USERNAME/README ]; then
      if grep -q "SIP server password" /home/$MY_USERNAME/README; then
          if [ ! $SIP_SERVER_PASSWORD ]; then
              SIP_SERVER_PASSWORD=$(cat /home/$MY_USERNAME/README | grep "SIP server password" | awk -F ':' '{print $2}' | sed 's/^ *//')
          fi
      fi
  fi
}

function install_ipfs {
  if [[ $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" ]]; then
      return
  fi

  # update to the next commit
  if [ -d /home/git/go/src/github.com/ipfs/go-ipfs ]; then
      if grep -q "ipfs commit" $COMPLETION_FILE; then
          CURRENT_IPFS_COMMIT=$(grep "ipfs commit" $COMPLETION_FILE | awk -F ':' '{print $2}')
          if [[ "$CURRENT_IPFS_COMMIT" != "$IPFS_COMMIT" ]]; then
              cd /home/git/go/src/github.com/ipfs/go-ipfs
              git stash
              git checkout master
              git pull
              git checkout $IPFS_COMMIT -b $IPFS_COMMIT
              sed -i "s/ipfs commit.*/ipfs commit:$IPFS_COMMIT/g" $COMPLETION_FILE
              chown -R git:git /home/git
              systemctl restart ipfs
              systemctl daemon-reload
          fi
      else
          echo "ipfs commit:$IPFS_COMMIT" >> $COMPLETION_FILE
      fi
  fi

  if grep -Fxq "install_ipfs" $COMPLETION_FILE; then
      return
  fi

  apt-get -y install golang libpam0g-dev fuse

  if [ ! -d /home/git ]; then
      # add a gogs user account
      adduser --disabled-login --gecos 'Gogs' git

      # install Go
      if ! grep -q "export GOPATH=/home/git/go" ~/.bashrc; then
          echo 'export GOPATH=/home/git/go' >> ~/.bashrc
          echo 'systemctl set-environment GOPATH=/home/git/go' >> ~/.bashrc
      fi
      . ~/.bashrc
      export GOPATH=/home/git/go
      if [ ! -d $GOPATH ]; then
          mkdir -p $GOPATH
      fi
  fi

  IPFS_PATH=/home/git/go/bin
  if ! grep -q 'GOPATH/bin' ~/.bashrc; then
      echo 'export PATH="$GOPATH/bin:$PATH:";' >> ~/.bashrc
  fi
  . ~/.bashrc

  # set gopath for the user
  if ! grep -q "GOPATH=" /home/$MY_USERNAME/.bashrc; then
      echo 'export GOPATH=/home/git/go' >> /home/$MY_USERNAME/.bashrc
      echo 'export PATH="$GOPATH/bin:$PATH:";' >> /home/$MY_USERNAME/.bashrc
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.bashrc
  fi

  go get -u $IPFS_GO_REPO
  if [ ! "$?" = "0" ]; then
      exit 8242
  fi

  cd /home/git/go/src/github.com/ipfs/go-ipfs
  git checkout $IPFS_COMMIT -b $IPFS_COMMIT
  if ! grep -q "ipfs commit" $COMPLETION_FILE; then
      echo "ipfs commit:$IPFS_COMMIT" >> $COMPLETION_FILE
  else
      sed -i "s/ipfs commit.*/ipfs commit:$IPFS_COMMIT/g" $COMPLETION_FILE
  fi

  # initialise
  su -c "$IPFS_PATH/ipfs init -b 4096" - $MY_USERNAME
  if [ ! -d /home/$MY_USERNAME/.ipfs ]; then
      echo "IPFS could not be initialised for user $MY_USERNAME"
      exit 7358
  fi

  # directories to mount to
  if [ ! -d /ipfs ]; then
      mkdir /ipfs
      mkdir /ipns
      chown $MY_USERNAME:$MY_USERNAME /ipfs
      chown $MY_USERNAME:$MY_USERNAME /ipns
  fi

  if [ -f /etc/fuse.conf ]; then
      chown $MY_USERNAME:$MY_USERNAME /etc/fuse.conf
  fi
  if [ -f /dev/fuse ]; then
      chown $MY_USERNAME:$MY_USERNAME /dev/fuse
  fi

  echo '[Unit]' > /etc/systemd/system/ipfs.service
  echo 'Description=IPFS daemon' >> /etc/systemd/system/ipfs.service
  echo 'After=syslog.target' >> /etc/systemd/system/ipfs.service
  echo 'After=network.target' >> /etc/systemd/system/ipfs.service
  echo '' >> /etc/systemd/system/ipfs.service
  echo '[Service]' >> /etc/systemd/system/ipfs.service
  echo 'Type=simple' >> /etc/systemd/system/ipfs.service
  echo "User=$MY_USERNAME" >> /etc/systemd/system/ipfs.service
  echo "Group=$MY_USERNAME" >> /etc/systemd/system/ipfs.service
  echo "WorkingDirectory=/home/$MY_USERNAME" >> /etc/systemd/system/ipfs.service
  echo "ExecStart=$IPFS_PATH/ipfs daemon --mount" >> /etc/systemd/system/ipfs.service
  echo 'Restart=on-failure' >> /etc/systemd/system/ipfs.service
  echo "Environment=\"USER=$MY_USERNAME\" \"HOME=/home/$MY_USERNAME\" \"GOPATH=/home/git/go\"" >> /etc/systemd/system/ipfs.service
  echo '' >> /etc/systemd/system/ipfs.service
  echo '[Install]' >> /etc/systemd/system/ipfs.service
  echo 'WantedBy=multi-user.target' >> /etc/systemd/system/ipfs.service

  systemctl enable ipfs
  systemctl daemon-reload
  systemctl restart ipfs

  if [ -d /etc/avahi ]; then
      su -c "echo $($IPFS_PATH/ipfs id | grep '\"ID\":' | awk -F '\"' '{print $4}') > /tmp/ipfsid" - $MY_USERNAME
      if [ ! -f /tmp/ipfsid ]; then
          echo 'No IPFS identity was created'
          exit 37895
      fi
      IPFS_PEER_ID=$(cat /tmp/ipfsid)
      if [ ${#IPFS_PEER_ID} -lt 10 ]; then
          echo 'Invalid IPFS peer ID'
          echo "$IPFS_PEER_ID"
          exit 74782
      fi
      # Add an avahi service
      echo '<?xml version="1.0" standalone="no"?><!--*-nxml-*-->' > /etc/avahi/services/ipfs.service
      echo '<!DOCTYPE service-group SYSTEM "avahi-service.dtd">' >> /etc/avahi/services/ipfs.service
      echo '<service-group>' >> /etc/avahi/services/ipfs.service
      echo '  <name replace-wildcards="yes">%h IPFS</name>' >> /etc/avahi/services/ipfs.service
      echo '  <service>' >> /etc/avahi/services/ipfs.service
      echo '    <type>_ipfs._tcp</type>' >> /etc/avahi/services/ipfs.service
      echo "    <port>$IPFS_PORT</port>" >> /etc/avahi/services/ipfs.service
      echo "    <txt-record>$IPFS_PEER_ID</txt-record>" >> /etc/avahi/services/ipfs.service
      echo '  </service>' >> /etc/avahi/services/ipfs.service
      echo '</service-group>' >> /etc/avahi/services/ipfs.service
      rm /tmp/ipfsid
  fi

  echo 'install_ipfs' >> $COMPLETION_FILE
}

function install_voip {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_DEVELOPER" ]]; then
      return
  fi
  if grep -Fxq "install_voip" $COMPLETION_FILE; then
      return
  fi
  apt-get -y install mumble-server

  get_voip_server_password
  if [ ! $VOIP_SERVER_PASSWORD ]; then
      if [ -f $IMAGE_PASSWORD_FILE ]; then
          VOIP_SERVER_PASSWORD="$(printf `cat $IMAGE_PASSWORD_FILE`)"
      else
          VOIP_SERVER_PASSWORD="$(openssl rand -base64 16)"
          if [ ${#VOIP_SERVER_PASSWORD} -lt $MINIMUM_PASSWORD_LENGTH ]; then
              VOIP_SERVER_PASSWORD="$(openssl rand -base64 16)"
          fi
      fi
  fi

  # Make an ssl cert for the server
  if [ ! -f /etc/ssl/certs/mumble.dhparam ]; then
      ${PROJECT_NAME}-addcert -h mumble --dhkey $DH_KEYLENGTH
      check_certificates mumble
  fi

  # Check that the cert was created
  if [ ! -f /etc/ssl/certs/mumble.crt ]; then
      echo 'VoIP server certificate not created'
      exit 57892
  fi
  if [ ! -f /etc/ssl/private/mumble.key ]; then
      echo 'VoIP server key not created'
      exit 57893
  fi
  if [ ! -d /var/lib/mumble-server ]; then
      mkdir /var/lib/mumble-server
  fi
  cp /etc/ssl/certs/mumble.* /var/lib/mumble-server
  cp /etc/ssl/private/mumble.key /var/lib/mumble-server
  chown -R mumble-server:mumble-server /var/lib/mumble-server

  sed -i "s|welcometext=.*|welcometext=\"<br />Welcome to $DEFAULT_DOMAIN_NAME <b>VoIP</b>.<br />Chat freely!<br />\"|g" /etc/mumble-server.ini

  if [[ $VOIP_SERVER_PASSWORD && $SYSTEM_TYPE != "$VARIANT_MESH" ]]; then
      sed -i "s|serverpassword=.*|serverpassword=$VOIP_SERVER_PASSWORD|g" /etc/mumble-server.ini
  fi

  sed -i 's|#autobanAttempts.*|autobanAttempts = 10|g' /etc/mumble-server.ini
  sed -i 's|#autobanTimeframe.*|autobanTimeframe = 120|g' /etc/mumble-server.ini
  sed -i 's|#autobanTime.*|autobanTime = 300|g' /etc/mumble-server.ini
  sed -i 's|#sendversion=.*|sendversion=False|g' /etc/mumble-server.ini
  sed -i 's|sendversion=.*|sendversion=False|g' /etc/mumble-server.ini
  if ! grep -q "allowping" /etc/mumble-server.ini; then
      echo 'allowping=False' >> /etc/mumble-server.ini
  fi
  sed -i 's|allowping=.*|allowping=False|g' /etc/mumble-server.ini
  sed -i 's|#sslCert=.*|sslCert=/var/lib/mumble-server/mumble.crt|g' /etc/mumble-server.ini
  sed -i 's|#sslKey=.*|sslKey=/var/lib/mumble-server/mumble.key|g' /etc/mumble-server.ini
  sed -i 's|#certrequired=.*|certrequired=True|g' /etc/mumble-server.ini
  sed -i 's|users=100|users=10|g' /etc/mumble-server.ini
  sed -i 's|#channelnestinglimit=10|channelnestinglimit=10|g' /etc/mumble-server.ini
  sed -i 's|#textmessagelength=.*|textmessagelength=1000|g' /etc/mumble-server.ini
  sed -i 's|textmessagelength=.*|textmessagelength=1000|g' /etc/mumble-server.ini
  sed -i 's|#imagemessagelength=.*|imagemessagelength=131072|g' /etc/mumble-server.ini
  sed -i 's|#allowhtml=.*|allowhtml=False|g' /etc/mumble-server.ini
  sed -i 's|allowhtml=.*|allowhtml=False|g' /etc/mumble-server.ini
  sed -i "s|port=.*|port=$VOIP_PORT|g" /etc/mumble-server.ini

  systemctl restart mumble-server

  if ! grep -q "VoIP Server" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'VoIP Server' >> /home/$MY_USERNAME/README
      echo '===========' >> /home/$MY_USERNAME/README
      echo 'VoIP server username: mumble-server' >> /home/$MY_USERNAME/README
      if [[ $SYSTEM_TYPE != "VARIANT_MESH" ]]; then
          echo "VoIP server password: $VOIP_SERVER_PASSWORD" >> /home/$MY_USERNAME/README
      fi
      echo '' >> /home/$MY_USERNAME/README
      echo 'To connect to the VoIP server use your username and the server password shown above.' >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
      chmod 600 /home/$MY_USERNAME/README
  fi

  echo 'install_voip' >> $COMPLETION_FILE
}

function install_sip {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_DEVELOPER" ]]; then
      return
  fi
  if grep -Fxq "install_sip" $COMPLETION_FILE; then
      return
  fi

  apt-get -y install sipwitch

  get_sip_server_password
  if [ ! $SIP_SERVER_PASSWORD ]; then
      if [ -f $IMAGE_PASSWORD_FILE ]; then
          SIP_SERVER_PASSWORD="$(printf `cat $IMAGE_PASSWORD_FILE`)"
      else
          SIP_SERVER_PASSWORD="$(openssl rand -base64 10)"
      fi
  fi

  echo '<?xml version="1.0"?>' > /etc/sipwitch.conf
  echo '<sipwitch>' >> /etc/sipwitch.conf
  echo '<provision>' >> /etc/sipwitch.conf

  echo "<user id=\"$MY_USERNAME\">" >> /etc/sipwitch.conf
  echo '<extension>201</extension>' >> /etc/sipwitch.conf
  echo "<secret>$SIP_SERVER_PASSWORD</secret>" >> /etc/sipwitch.conf
  echo "<display>$MY_USERNAME 201</display>" >> /etc/sipwitch.conf
  echo '</user>' >> /etc/sipwitch.conf

  echo '</provision>' >> /etc/sipwitch.conf
  echo '<access>' >> /etc/sipwitch.conf
  echo '</access>' >> /etc/sipwitch.conf
  echo '<stack>' >> /etc/sipwitch.conf
  echo "  <localnames>$DEFAULT_DOMAIN_NAME</localnames>" >> /etc/sipwitch.conf
  echo '  <mapped>200</mapped>' >> /etc/sipwitch.conf
  echo '  <threading>2</threading>' >> /etc/sipwitch.conf
  echo '  <interface>*</interface>' >> /etc/sipwitch.conf
  echo '  <dumping>false</dumping>' >> /etc/sipwitch.conf
  echo '  <system>system</system>' >> /etc/sipwitch.conf
  echo '  <anon>anonymous</anon>' >> /etc/sipwitch.conf
  echo '</stack>' >> /etc/sipwitch.conf
  echo '<timers>' >> /etc/sipwitch.conf
  echo '  <!-- ring every 4 seconds -->' >> /etc/sipwitch.conf
  echo '  <ring>4</ring>' >> /etc/sipwitch.conf
  echo '  <!-- call forward no answer after x rings -->' >> /etc/sipwitch.conf
  echo '  <cfna>4</cfna>' >> /etc/sipwitch.conf
  echo '  <!-- call reset to clear cid in stack, 6 seconds -->' >> /etc/sipwitch.conf
  echo '  <reset>6</reset>' >> /etc/sipwitch.conf
  echo '</timers>' >> /etc/sipwitch.conf
  echo '<!-- we have 2xx numbers plus space for external users -->' >> /etc/sipwitch.conf
  echo '<registry>' >> /etc/sipwitch.conf
  echo '  <prefix>200</prefix>' >> /etc/sipwitch.conf
  echo '  <range>100</range>' >> /etc/sipwitch.conf
  echo '  <keysize>77</keysize>' >> /etc/sipwitch.conf
  echo '  <mapped>200</mapped>' >> /etc/sipwitch.conf
  echo '  <!-- <realm>GNU Telephony</realm> -->' >> /etc/sipwitch.conf
  echo '</registry>' >> /etc/sipwitch.conf
  echo '<routing>' >> /etc/sipwitch.conf
  echo '</routing>' >> /etc/sipwitch.conf
  echo '</sipwitch>' >> /etc/sipwitch.conf

  sed -i 's|#PLUGINS=|PLUGINS=|g' /etc/default/sipwitch
  groupadd sipwitch
  usermod -aG sipwitch $MY_USERNAME

  service sipwitch start

  if ! grep -q "SIP Server" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'SIP Server' >> /home/$MY_USERNAME/README
      echo '==========' >> /home/$MY_USERNAME/README
      echo "SIP server username: $MY_USERNAME" >> /home/$MY_USERNAME/README
      echo "SIP server extension: 201" >> /home/$MY_USERNAME/README
      echo "SIP server password: $SIP_SERVER_PASSWORD" >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
      chmod 600 /home/$MY_USERNAME/README
  fi

  echo 'install_sip' >> $COMPLETION_FILE
}

function install_final {
  if grep -Fxq "install_final" $COMPLETION_FILE; then
      return
  fi
  # unmount any attached usb drive
  if [ -d $USB_MOUNT ]; then
      umount $USB_MOUNT
      rm -rf $USB_MOUNT
  fi
  split_gpg_key_into_fragments
  echo 'install_final' >> $COMPLETION_FILE
  clear
  echo ''
  echo $'
  *** Freedombone installation is complete. Rebooting... ***

    Now forward these ports from your internet router

                     HTTP     80
                     HTTPS    443
                     SSH      2222
                     DLNA     1900
                     DLNA     8200
                     XMPP     5222-5223
                     XMPP     5269
                     XMPP     5280-5281
                     IRC      6697
                     IRC      9999
                     Git      9418
                     Email    25
                     Email    587
                     Email    465
                     Email    993
                     VoIP     64738
                     VoIP     5060
                     Tox      33445
                     IPFS     4001
'
  if [ -f "/home/$MY_USERNAME/README" ]; then
      echo $"See /home/$MY_USERNAME/README for post-installation instructions."
      echo ''
  fi
  if [ ! -f $IMAGE_PASSWORD_FILE ]; then
      reboot
  fi
}


read_configuration
locale_setup
parse_args
check_domains
install_not_on_BBB
remove_default_user
configure_firewall
configure_firewall_ping
configure_firewall_for_ssh
configure_firewall_for_dns
configure_firewall_for_ftp
configure_firewall_for_web_access
configure_firewall_for_voip
configure_firewall_for_sip
configure_firewall_for_avahi
configure_firewall_for_zeronet
configure_firewall_for_ipfs
remove_proprietary_repos
change_debian_repos
enable_backports
configure_dns
initial_setup
check_date
install_dynamicdns
randomize_cron
create_freedns_updater
mark_admin_user_account
enforce_good_passwords
install_editor
change_login_message
enable_zram
random_number_generator
set_your_domain_name
time_synchronisation
configure_internet_protocol
create_git_project
configure_ssh
remove_instructions_from_motd
check_hwrng
search_for_attached_usb_drive
regenerate_ssh_keys
create_upgrade_script
letsencrypt_renewals
install_zeronet
install_watchdog_script
configure_avahi
install_zeronet_blog
install_zeronet_mail
install_zeronet_forum
#install_atheros_wifi
configure_firewall_for_cjdns
mesh_cjdns
mesh_cjdns_tools
configure_firewall_for_batman
mesh_batman_bridge
configure_firewall_for_babel
mesh_babel
route_outgoing_traffic_through_tor
configure_email
create_procmail
spam_filtering
configure_imap
#configure_imap_client_certs
configure_gpg
configure_backup_key
encrypt_incoming_email
encrypt_outgoing_email
email_client
email_archiving
email_from_address
configure_firewall_for_email
create_public_mailing_list
#create_private_mailing_list
encrypt_all_email
import_email
script_for_attaching_usb_drive
install_web_server
configure_firewall_for_web_server
install_owncloud
install_owncloud_music_app
install_gogs
install_xmpp
install_tox_node
install_tox_client
tox_avahi
configure_firewall_for_xmpp
install_irc_server
configure_firewall_for_irc
install_voip
install_sip
install_wiki
install_blog
mark_blog_domain
install_gnu_social
install_hubzilla
install_dlna_server
configure_firewall_for_dlna
install_mediagoblin
#install_ipfs
repair_databases_script
backup_to_friends_servers
intrusion_detection
install_final
echo 'Freedombone installation is complete'
exit 0