#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# This command is run on initial install in order to set up a mesh router
#
# License
# =======
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

PROJECT_NAME='freedombone'

export TEXTDOMAIN=${PROJECT_NAME}-image-mesh
export TEXTDOMAINDIR="/usr/share/locale"

# The browser application to use
BROWSER=midori
BROWSER_OPTIONS='-p'

MY_USERNAME='fbone'
PEER_ID=
INSTALL_DIR=/root/build
INSTALL_LOG=/var/log/${PROJECT_NAME}.log

DEFAULT_USERNAME=fbone

TOX_NODES=
#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'
#)

MESH_INSTALL_DIR=/var/lib
MESH_INSTALL_COMPLETED=/root/.mesh_setup_completed
MESH_INSTALL_SETUP=/root/.initial_mesh_setup
MESH_AMNESIC=/root/.amnesic
FIRST_BOOT=/home/$MY_USERNAME/.first_boot

# Tomb containing logs
TOMB_LOG_SIZE_MB=10

# tmp directory
TOMB_TMP_SIZE_MB=10

# size of the tomb used to store qtox settings
TOMB_TOX_SIZE_MB=10

# Tomb containing tox bootstrap
TOMB_TOX_BOOTSTRAP_SIZE_MB=10

MESH_INSTALL_DIR=/var/lib

IPFS_PORT=4001

CURRENT_BLOG_INDEX=/home/$MY_USERNAME/.blog-index

# Debian stretch has a problem where the formerly predictable wlan0 and eth0
# device names get assigned random names. This is a hacky workaround.
# Also adding net.ifnames=0 to kernel options on bootloader may work.
function enable_predictable_device_names {
    ln -s /dev/null /etc/udev/rules.d/80-net-setup-link.rules
    update-initramfs -u
}

function create_avahi_mesh_service {
    service_name=$1
    service_type=$2
    service_protocol=$3
    service_port=$4
    service_description="$5"

    if [ ! -d /etc/avahi ]; then
        echo $'create_avahi_mesh_service: avahi was not installed'
        exit 52925
    fi

    echo '<?xml version="1.0" standalone="no"?><!--*-nxml-*-->' > /etc/avahi/services/${service_name}.service
    echo '<!DOCTYPE service-group SYSTEM "avahi-service.dtd">' >> /etc/avahi/services/${service_name}.service
    echo '<service-group>' >> /etc/avahi/services/${service_name}.service
    echo "  <name replace-wildcards=\"yes\">%h ${service_type}</name>" >> /etc/avahi/services/${service_name}.service
    echo '  <service>' >> /etc/avahi/services/${service_name}.service
    echo "    <type>_${service_type}._${service_protocol}</type>" >> /etc/avahi/services/${service_name}.service
    echo "    <port>${service_port}</port>" >> /etc/avahi/services/${service_name}.service
    echo "    <txt-record>$service_description</txt-record>" >> /etc/avahi/services/${service_name}.service
    echo '  </service>' >> /etc/avahi/services/${service_name}.service
    echo '</service-group>' >> /etc/avahi/services/${service_name}.service
}

function create_ram_disk {
    ramdisk_size_mb=$1
    if [ ! -d /mnt/ramdisk ]; then
        mkdir -p /mnt/ramdisk
    fi
    if ! grep -q "ramdisk" /etc/fstab; then
        mount -t tmpfs -o size=${ramdisk_size_mb}m tmpfs /mnt/ramdisk
        echo "tmpfs       /mnt/ramdisk tmpfs   nodev,nosuid,noexec,nodiratime,size=${ramdisk_size_mb}M   0 0" >> /etc/fstab
        echo $"${ramdisk_size_mb}M ramdisk created for /tmp" >> $INSTALL_LOG
    fi
}

function make_root_read_only {
    if [ ! -d /home/$MY_USERNAME/Desktop ]; then
        if ! grep -q 'ro,subvol=@' /etc/fstab; then
            sed -i 's|subvol=@|ro,subvol=@|g' /etc/fstab
            echo $'Root filesystem set to read only' >> $INSTALL_LOG
        fi
    fi
}

function tmp_ram_disk {
    ramdisk_size_mb=$1
    if [ ! -d /tmp ]; then
        mkdir -p /tmp
    fi
    if ! grep -q '/tmp' /etc/fstab; then
        mount -t tmpfs -o size=${ramdisk_size_mb}m tmpfs /tmp
        echo "tmpfs       /tmp tmpfs   nodev,nosuid,noexec,nodiratime,size=${ramdisk_size_mb}M   0 0" >> /etc/fstab
    fi
}

function set_hostname {
    DEFAULT_DOMAIN_NAME="$1"

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

function change_avahi_name {
    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]}${decarray[$RANDOM%10]}${decarray[$RANDOM%10]}${decarray[$RANDOM%10]}${decarray[$RANDOM%10]}
    sed -i "s|#host-name=.*|host-name=P$PEER_ID|g" /etc/avahi/avahi-daemon.conf
    sed -i "s|host-name=.*|host-name=P$PEER_ID|g" /etc/avahi/avahi-daemon.conf
    set_hostname P$PEER_ID
    systemctl restart avahi-daemon

    echo "New avahi name for this peer is P$PEER_ID"
    echo $"avahi name changed to P${PEER_ID}.local" >> $INSTALL_LOG
}

function configure_toxcore {
    echo $'Configuring toxcore' >> $INSTALL_LOG

    TOXIC_FILE=$(cat /usr/share/${PROJECT_NAME}/apps/${PROJECT_NAME}-app-tox | grep "TOXIC_FILE=" | head -n 1 | awk -F '=' '{print $2}')

    if [ -f $MESH_AMNESIC ]; then
        # change to the amnesic mount
        sed -i 's|/var/lib/tox-bootstrapd|/media/tox-bootstrapd|g' /etc/tox-bootstrapd.conf
        systemctl stop tox-bootstrapd.service
        sed -i 's|WorkingDirectory=.*|WorkingDirectory=/media/tox-bootstrapd|g' /etc/systemd/system/tox-bootstrapd.service
        systemctl daemon-reload
        userdel -r tox-bootstrapd
        useradd --home-dir /media/tox-bootstrapd --create-home --system --shell /sbin/nologin --comment "Account to run Tox's DHT bootstrap daemon" --user-group tox-bootstrapd
        chmod 700 /media/tox-bootstrapd
    fi

    echo $'Enabling toxcore daemon' >> $INSTALL_LOG
    chmod +x /etc/systemd/system/tox-bootstrapd.service
    systemctl enable tox-bootstrapd.service

    echo $'Regenerating Tox bootstrap node keys' >> $INSTALL_LOG
    systemctl stop tox-bootstrapd.service
    if [ -f /var/lib/tox-bootstrapd/keys ]; then
        rm /var/lib/tox-bootstrapd/keys
    fi
    systemctl start tox-bootstrapd.service
    # sleep for a while so that the tox keys can be generated
    sleep 30
    TOX_BOOTSTRAP_ID_FILE=/var/lib/tox-bootstrapd/pubkey.txt
    if [ -f $MESH_AMNESIC ]; then
        TOX_BOOTSTRAP_ID_FILE=/media/tox-bootstrapd/pubkey.txt
    fi
    TOX_PUBLIC_KEY=$(cat /var/log/syslog | grep tox | grep "Public Key" | awk -F ' ' '{print $8}' | tail -1)
    if [ ${#TOX_PUBLIC_KEY} -lt 30 ]; then
        echo $'WARNING: Could not obtain the tox node public key' >> $INSTALL_LOG
        exit 46362
    fi

    # save the public key for later reference
    echo "$TOX_PUBLIC_KEY" > $TOX_BOOTSTRAP_ID_FILE
    echo $'Configured toxcore' >> $INSTALL_LOG
}

function create_tox_user {
    # remove any existing user
    if [ -f /home/${MY_USERNAME}/.config/tox/data.tox ]; then
        rm -f /home/${MY_USERNAME}/.config/tox/data*
    fi
    if [ -d /home/${MY_USERNAME}/.config/tox/avatars ]; then
        rm -rf /home/${MY_USERNAME}/.config/tox/avatars
    fi
    if [ ! -f /home/${MY_USERNAME}/.first_boot ]; then
        touch /home/${MY_USERNAME}/.first_boot
    fi

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

    toxid -u $MY_USERNAME -n data
    chown -R ${MY_USERNAME}:${MY_USERNAME} /home/${MY_USERNAME}/.config/tox

    chmod +x /home/$MY_USERNAME/Desktop/*.desktop
    chown ${MY_USERNAME}:${MY_USERNAME} /home/$MY_USERNAME/Desktop/*
    echo $'Created Tox user' >> $INSTALL_LOG
}

function show_desktop_icons {
    if [ ! -d /home/$MY_USERNAME/Desktop ]; then
        return
    fi

    echo '#!/bin/bash' > /home/$MY_USERNAME/.showhelp
    echo "pkill $BROWSER" >> /home/$MY_USERNAME/.showhelp
    echo "$BROWSER $BROWSER_OPTIONS /home/$MY_USERNAME/help/mesh.html" >> /home/$MY_USERNAME/.showhelp
    chmod +x /home/$MY_USERNAME/.showhelp
    chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.showhelp

    echo '[Desktop Entry]' > /home/$MY_USERNAME/Desktop/help.desktop
    echo 'Version=1.0' >> /home/$MY_USERNAME/Desktop/help.desktop
    echo 'Name=Help' >> /home/$MY_USERNAME/Desktop/help.desktop
    echo 'Type=Application' >> /home/$MY_USERNAME/Desktop/help.desktop
    echo 'Comment=Show help' >> /home/$MY_USERNAME/Desktop/help.desktop
    echo "Exec=bash -c /home/$MY_USERNAME/.showhelp" >> /home/$MY_USERNAME/Desktop/help.desktop
    echo 'Icon=/usr/share/freedombone/avatars/help.png' >> /home/$MY_USERNAME/Desktop/help.desktop
    echo 'Terminal=false' >> /home/$MY_USERNAME/Desktop/help.desktop
    echo 'Categories=Application;' >> /home/$MY_USERNAME/Desktop/help.desktop

    echo '[Desktop Entry]' > /home/$MY_USERNAME/Desktop/wifi.desktop
    echo 'Version=1.0' >> /home/$MY_USERNAME/Desktop/wifi.desktop
    echo 'Name=Wifi' >> /home/$MY_USERNAME/Desktop/wifi.desktop
    echo 'Type=Application' >> /home/$MY_USERNAME/Desktop/wifi.desktop
    echo 'Comment=Check wifi status' >> /home/$MY_USERNAME/Desktop/wifi.desktop
    echo 'Exec=mate-terminal -e "sudo batman monitor"' >> /home/$MY_USERNAME/Desktop/wifi.desktop
    echo 'Icon=/usr/share/freedombone/avatars/wifi.png' >> /home/$MY_USERNAME/Desktop/wifi.desktop
    echo 'Terminal=false' >> /home/$MY_USERNAME/Desktop/wifi.desktop
    echo 'Categories=Application;' >> /home/$MY_USERNAME/Desktop/wifi.desktop

    echo '[Desktop Entry]' > /home/$MY_USERNAME/Desktop/restart.desktop
    echo 'Version=1.0' >> /home/$MY_USERNAME/Desktop/restart.desktop
    echo 'Name=Network Restart' >> /home/$MY_USERNAME/Desktop/restart.desktop
    echo 'Type=Application' >> /home/$MY_USERNAME/Desktop/restart.desktop
    echo 'Comment=Restart batman' >> /home/$MY_USERNAME/Desktop/restart.desktop
    echo 'Exec=mate-terminal -e "sudo batman restart 2> /dev/null"' >> /home/$MY_USERNAME/Desktop/restart.desktop
    echo 'Icon=/usr/share/freedombone/avatars/restart.png' >> /home/$MY_USERNAME/Desktop/restart.desktop
    echo 'Terminal=false' >> /home/$MY_USERNAME/Desktop/restart.desktop
    echo 'Categories=Application;' >> /home/$MY_USERNAME/Desktop/restart.desktop

    echo '[Desktop Entry]' > /home/$MY_USERNAME/Desktop/new_identity.desktop
    echo 'Version=1.0' >> /home/$MY_USERNAME/Desktop/new_identity.desktop
    echo 'Name=New Identity' >> /home/$MY_USERNAME/Desktop/new_identity.desktop
    echo 'Type=Application' >> /home/$MY_USERNAME/Desktop/new_identity.desktop
    echo 'Comment=Create a new identity' >> /home/$MY_USERNAME/Desktop/new_identity.desktop
    echo 'Exec=mate-terminal -e freedombone-mesh-reset' >> /home/$MY_USERNAME/Desktop/new_identity.desktop
    echo 'Icon=/usr/share/freedombone/avatars/newidentity.png' >> /home/$MY_USERNAME/Desktop/new_identity.desktop
    echo 'Terminal=false' >> /home/$MY_USERNAME/Desktop/new_identity.desktop
    echo 'Categories=Application;' >> /home/$MY_USERNAME/Desktop/new_identity.desktop

    # set permissions
    chmod +x /home/$MY_USERNAME/Desktop/*.desktop
    chown ${MY_USERNAME}:${MY_USERNAME} /home/$MY_USERNAME/Desktop/*
    chown ${MY_USERNAME}:${MY_USERNAME} /home/$MY_USERNAME/.config
    chown -R ${MY_USERNAME}:${MY_USERNAME} /home/$MY_USERNAME/.config/tox
    chown -R ${MY_USERNAME}:${MY_USERNAME} /home/$MY_USERNAME/.config/autostart
    chown ${MY_USERNAME}:${MY_USERNAME} /home/$MY_USERNAME/*.sh

    # link to Tahoe-LAFS Magic folder
    #ln -s /home/${MY_USERNAME}/Desktop/${TAHOELAFS_SHARED_DIR} /home/${MY_USERNAME}/${TAHOELAFS_SHARED_DIR}

    # restart caja
    killall caja
    killall mate-panel
}

function enable_batman_daemon {
    systemctl enable batman
    systemctl daemon-reload
}

function mesh_amnesic {
    if [ ! -f $MESH_AMNESIC ]; then
        return
    fi

    echo '#!/bin/bash' > /usr/bin/amnesic
    echo '' >> /usr/bin/amnesic
    echo 'MY_USERNAME=$1' >> /usr/bin/amnesic
    echo 'tomb slam all' >> /usr/bin/amnesic
    echo "if [ -f /home/${MY_USERNAME}/.bash_history ]; then" >> /usr/bin/amnesic
    echo "    shred -zu /home/${MY_USERNAME}/.bash_history" >> /usr/bin/amnesic
    echo 'fi' >> /usr/bin/amnesic
    echo "if [ -f /home/${MY_USERNAME}/.xsession-errors ]; then" >> /usr/bin/amnesic
    echo "    shred -zu /home/${MY_USERNAME}/.xsession-errors" >> /usr/bin/amnesic
    echo 'fi' >> /usr/bin/amnesic
    echo '' >> /usr/bin/amnesic
    echo 'exit 0' >> /usr/bin/amnesic
    chmod +x /usr/bin/amnesic

    if [ ! -f /etc/systemd/system/amnesic.service ]; then
        echo '[Unit]' > /etc/systemd/system/amnesic.service
        echo 'Description=Amnesic Mesh' >> /etc/systemd/system/amnesic.service
        echo '' >> /etc/systemd/system/amnesic.service
        echo '[Service]' >> /etc/systemd/system/amnesic.service
        echo 'User=root' >> /etc/systemd/system/amnesic.service
        echo 'Group=root' >> /etc/systemd/system/amnesic.service
        echo 'Type=oneshot' >> /etc/systemd/system/amnesic.service
        echo 'RemainAfterExit=true' >> /etc/systemd/system/amnesic.service
        echo 'ExecStart=/bin/true' >> /etc/systemd/system/amnesic.service
        echo "ExecStop=/usr/bin/amnesic $MY_USERNAME" >> /etc/systemd/system/amnesic.service
        echo '' >> /etc/systemd/system/amnesic.service
        echo '[Install]' >> /etc/systemd/system/amnesic.service
        echo 'WantedBy=multi-user.target' >> /etc/systemd/system/amnesic.service

        chmod +x /etc/systemd/system/amnesic.service
        systemctl daemon-reload
    fi
    systemctl enable amnesic
    systemctl start amnesic
}

function mesh_restart_daemons {
    systemctl restart avahi-daemon
    systemctl restart tox-bootstrapd
    echo $'Daemons restarted' >> $INSTALL_LOG
}

function create_tomb {
    tomb_name=$1
    tomb_size=$2

    if [ -f /tmp/${tomb_name}.tomb ]; then
        tomb slam /tmp/${tomb_name}.tomb
    fi

    # make a temporary password
    tomb dig -s ${tomb_size} /tmp/${tomb_name}.tomb
    if [ ! -f /tmp/${tomb_name}.tomb ]; then
        echo "WARNING: ${tomb_name} tomb did not install properly" >> /var/log/${PROJECT_NAME}.log
        tomb >> /var/log/${PROJECT_NAME}.log
    fi
    TOMB_TEMP_PASSWORD=$(openssl rand -base64 64 | tr -dc A-Za-z0-9 | head -c 30)

    tomb forge /mnt/ramdisk/${tomb_name}.tomb.key --tomb-pwd "${TOMB_TEMP_PASSWORD}" --unsafe
    tomb lock /tmp/${tomb_name}.tomb -k /mnt/ramdisk/${tomb_name}.tomb.key --tomb-pwd "${TOMB_TEMP_PASSWORD}" --unsafe
    tomb open /tmp/${tomb_name}.tomb -k /mnt/ramdisk/${tomb_name}.tomb.key --tomb-pwd "${TOMB_TEMP_PASSWORD}" --unsafe
    # stop stuff from popping up
    pkill caja

    # clear the temporary password
    TOMB_TEMP_PASSWORD=
}

function setup_amnesic_data {
    if [ ! -f $MESH_AMNESIC ]; then
        return
    fi
    if [ ! -d /mnt/ramdisk ]; then
        return
    fi

    # clear crypttab
    if [ -f /etc/crypttab ]; then
        shred -zu /etc/crypttab
        touch /etc/crypttab
    fi

    tomb_name=log
    create_tomb ${tomb_name} $TOMB_LOG_SIZE_MB
    if [ -d /media/${tomb_name} ]; then
        if [ -d /var/log ]; then
            if [ ! -d /var/log_base ]; then
                mv /var/log /var/log_base
            fi
        fi
        ln -s /media/${tomb_name} /var/log
        if [ -d /var/log_base ]; then
            cp -rp /var/log_base/* /media/${tomb_name}
        fi
        echo "${tomb_name} tomb created" >> $INSTALL_LOG
    else
        echo "WARNING: ${tomb_name} tomb not found" >> $INSTALL_LOG
    fi

    tomb_name=tox-bootstrapd
    if [ -f /etc/systemd/system/${tomb_name}.service ]; then
        systemctl stop ${tomb_name}
    fi
    create_tomb ${tomb_name} $TOMB_TOX_BOOTSTRAP_SIZE_MB
    if [ -d /media/${tomb_name} ]; then
        if [ -d /var/lib/tox-bootstrapd ]; then
            if [ ! -d /var/lib/tox-bootstrapd_base ]; then
                mv /var/lib/tox-bootstrapd /var/lib/tox-bootstrapd_base
            fi
        fi
        if [ -d /var/lib/tox-bootstrapd ]; then
            shred -zu /var/lib/tox-bootstrapd/*
            rm -rf /var/lib/tox-bootstrapd
        fi
        ln -s /media/${tomb_name} /var/lib/tox-bootstrapd
        if [ -d /var/lib/tox-bootstrapd_base ]; then
            cp -rp /var/lib/tox-bootstrapd_base/* /media/${tomb_name}
        fi
        echo "${tomb_name} tomb created" >> $INSTALL_LOG
    else
        echo "WARNING: ${tomb_name} tomb not found" >> $INSTALL_LOG
    fi

    tomb_name=tox
    create_tomb ${tomb_name} $TOMB_TOX_SIZE_MB
    if [ -d /media/${tomb_name} ]; then
        if [ ! -d /home/${MY_USERNAME}/.config ]; then
            mkdir -p /home/${MY_USERNAME}/.config
            chown ${MY_USERNAME}:${MY_USERNAME} /home/${MY_USERNAME}/.config
        fi
        if [ -d /home/${MY_USERNAME}/.config/${tomb_name} ]; then
            rm -rf /home/${MY_USERNAME}/.config/${tomb_name}
        fi
        ln -s /media/${tomb_name} /home/${MY_USERNAME}/.config/${tomb_name}
        chown -R ${MY_USERNAME}:${MY_USERNAME} /home/${MY_USERNAME}/.config/${tomb_name}
        chown -R ${MY_USERNAME}:${MY_USERNAME} /media/${tomb_name}
        echo "${tomb_name} tomb created" >> $INSTALL_LOG
    else
        echo "WARNING: ${tomb_name} tomb not found" >> $INSTALL_LOG
    fi
}

function setup_ipfs {
    IPFS_PATH=/usr/bin
    IPFS_KEY_LENGTH=2048
    IPFS_COMMAND=$IPFS_PATH/ipfs
    IPFS_PUBLIC=/home/$MY_USERNAME/.ipfs-public

    su -c "systemctl --user enable ipfs" - $MY_USERNAME

    if [ -f $CURRENT_BLOG_INDEX ]; then
        shred -zu $CURRENT_BLOG_INDEX
    fi

    if [ -d /home/$MY_USERNAME/Public ]; then
        rm /home/$MY_USERNAME/Desktop/Public
        rm -rf /home/$MY_USERNAME/Public
    fi

    if [ -d /home/$MY_USERNAME/CreateBlog/content/images ]; then
        shred -zu /home/$MY_USERNAME/CreateBlog/content/images/*
    fi

    if [ -d /home/$MY_USERNAME/CreateBlog/content ]; then
        shred -zu /home/$MY_USERNAME/CreateBlog/content/*
        if grep -q "THEME=" /home/$MY_USERNAME/CreateBlog/pelicanconf.py; then
            sed -i "s|THEME=.*|THEME='themes/nice-blog'|g" /home/$MY_USERNAME/CreateBlog/pelicanconf.py
        else
            echo "THEME='themes/nice-blog'" >> /home/$MY_USERNAME/CreateBlog/pelicanconf.py
        fi
    fi

    if [ -d /home/$MY_USERNAME/.ipfs ]; then
        shred -zu /home/$MY_USERNAME/.ipfs/config
        rm -rf /home/$MY_USERNAME/.ipfs
        su -c "systemctl --user restart ipfs" - $MY_USERNAME
    else
        su -c "systemctl --user start ipfs" - $MY_USERNAME
    fi

    if [ -f /home/$MY_USERNAME/.blog-index ]; then
        shred -zu /home/$MY_USERNAME/.blog-index
    fi

    if [ -f /home/$MY_USERNAME/.blog-theme-index ]; then
        shred -zu /home/$MY_USERNAME/.blog-theme-index
    fi

    if [ -f /home/$MY_USERNAME/.ipfs-id ]; then
        shred -zu /home/$MY_USERNAME/.ipfs-id
    fi

    if [ -f /home/$MY_USERNAME/.ipfs-public ]; then
        shred -zu /home/$MY_USERNAME/.ipfs-public
    fi

    su -c "$IPFS_COMMAND init -b $IPFS_KEY_LENGTH" - $MY_USERNAME
    if [ ! -d /home/$MY_USERNAME/.ipfs ]; then
        echo "IPFS could not be initialised for user $MY_USERNAME" >> $INSTALL_LOG
        return
    fi

    MY_IPFS_ID=/home/$MY_USERNAME/.ipfs-id
    su -c "echo \$($IPFS_COMMAND id | grep '\"ID\":' | awk -F '\"' '{print \$4}') > $MY_IPFS_ID" - $MY_USERNAME
    if [ ! -f $MY_IPFS_ID ]; then
        echo 'No IPFS identity was created' >> $INSTALL_LOG
        return
    fi

    IPFS_PEER_ID=$(cat $MY_IPFS_ID)
    if [ ${#IPFS_PEER_ID} -lt 10 ]; then
        echo 'Invalid IPFS peer ID' >> $INSTALL_LOG
        echo "$IPFS_PEER_ID" >> $INSTALL_LOG
        return
    fi

    # make a public directory
    TOX_ID='none'
    if [ -d /home/$MY_USERNAME/Desktop ]; then
        if [ ! -d /home/$MY_USERNAME/Public ]; then
            mkdir /home/$MY_USERNAME/Public
            echo $'Files within this directory will be publicly visible on the network' > /home/$MY_USERNAME/Public/README.txt
            chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/Public
            ln -s /home/$MY_USERNAME/Public /home/$MY_USERNAME/Desktop/Public
            su -c "echo \$($IPFS_COMMAND add -rq /home/$MY_USERNAME/Public | tail -n 1) > $IPFS_PUBLIC" - $MY_USERNAME
            if [ ! -f $IPFS_PUBLIC ]; then
                echo $'Unable to create public IPFS directory' >> $INSTALL_LOG
                exit 368225
            fi
        fi
        TOX_ID=$(su -c 'toxid' - $MY_USERNAME)
    fi

    create_avahi_mesh_service "ipfs_id" "ipfs_id" "udp" "$IPFS_PORT" "${IPFS_PEER_ID}:${TOX_ID}"

    echo "IPFS installed with ID ${IPFS_PEER_ID}" >> $INSTALL_LOG
}

function setup_tahoelafs {
    reconfigure_tahoelafs

    TAHOELAFS_CONFIG=/home/${MY_USERNAME}/.tahoe/tahoe.cfg
    if [ ! -f ${TAHOELAFS_CONFIG} ]; then
        exit 673923
    fi
    echo $'Configured Tahoe-LAFS' >> $INSTALL_LOG
}

# whether to reset the identity
set_new_identity=
if [ $2 ]; then
    if [[ "$2" == $"new"* ]]; then
        if [ ! -f $MESH_INSTALL_SETUP ]; then
            touch $MESH_INSTALL_SETUP
        fi
        set_new_identity=1
    fi
    if [[ "$2" == $"amnesic"* ]]; then
        if [ ! -f $MESH_AMNESIC ]; then
            touch $MESH_AMNESIC
        fi
        if [ ! -f $MESH_INSTALL_SETUP ]; then
            touch $MESH_INSTALL_SETUP
        fi
        set_new_identity=1
    fi
fi

if [ -f $MESH_INSTALL_SETUP ]; then
    if [ $1 ]; then
        MY_USERNAME=$1
    fi

    if [ ! $set_new_identity ]; then
        # sleep in order to allow other daemons to start up
        sleep 5
    fi

    # clear the install log
    if [ -f $INSTALL_LOG ]; then
        rm $INSTALL_LOG
    fi

    echo $'Beginning mesh node setup' >> $INSTALL_LOG

    if [ -d /home/$MY_USERNAME/.config ]; then
        chown ${MY_USERNAME}:${MY_USERNAME} /home/$MY_USERNAME/.config
    fi

    #tomb slam all
    tmp_ram_disk 100
    enable_predictable_device_names
    enable_batman_daemon
    #create_ram_disk 1
    #setup_amnesic_data
    change_avahi_name
    configure_toxcore
    create_tox_user
    #setup_tahoelafs
    setup_ipfs
    mesh_amnesic
    make_root_read_only

    if [ ! -f $MESH_AMNESIC ]; then
        rm $MESH_INSTALL_SETUP
        systemctl disable mesh-setup.service
    fi

    show_desktop_icons

    mesh_restart_daemons
    if [ ! -f $MESH_INSTALL_COMPLETED ]; then
        echo $'Mesh node setup complete' >> $INSTALL_LOG
        touch $MESH_INSTALL_COMPLETED
        if [ -d /home/$MY_USERNAME/Desktop ]; then
            touch $FIRST_BOOT
            chown ${MY_USERNAME}:${MY_USERNAME} $FIRST_BOOT
        fi

        # set the desktop background
        if [ -d /home/$MY_USERNAME/Desktop ]; then
            MESH_DESKTOP_BACKGROUND_IMAGE=/usr/local/share/${PROJECT_NAME}_mesh_background.png
            cp $MESH_DESKTOP_BACKGROUND_IMAGE /usr/share/images/desktop-base/${PROJECT_NAME}_mesh_background.png
            rm /usr/share/images/desktop-base/desktop-background
            ln -s /usr/share/images/desktop-base/${PROJECT_NAME}_mesh_background.png /usr/share/images/desktop-base/desktop-background
        fi
        if [ -f /etc/default/grub ]; then
            update-grub
        fi
        systemctl reboot -i
    fi
fi

exit 0