340 lines
11 KiB
Bash
Executable File
340 lines
11 KiB
Bash
Executable File
#!/bin/bash
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# _____ _ _
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# | __|___ ___ ___ _| |___ _____| |_ ___ ___ ___
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# | __| _| -_| -_| . | . | | . | . | | -_|
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# |__| |_| |___|___|___|___|_|_|_|___|___|_|_|___|
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#
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# Freedom in the Cloud
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#
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# DNS functions
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#
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# License
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# =======
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#
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# Copyright (C) 2014-2018 Bob Mottram <bob@freedombone.net>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# DNS
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NAMESERVER1='91.239.100.100'
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NAMESERVER2='89.233.43.71'
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NAMESERVER3='87.118.100.175'
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NAMESERVER4='94.75.228.29'
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NAMESERVER5='85.25.251.254'
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NAMESERVER6='2.141.58.13'
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# parameters used when adding a new domain
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DDNS_PROVIDER="freedns"
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DDNS_USERNAME=
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DDNS_PASSWORD=
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INADYN_REPO="https://github.com/troglobit/inadyn"
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INADYN_COMMIT='3fe26d2235ddda9047cf33e8ed1453bcc3bbbf19'
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INADYN_CONFIG_FILE=/etc/inadyn.conf
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# web site used to obtain the external IP address of the system
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GET_IP_ADDRESS_URL="checkip.two-dns.de"
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# other possible services to obtain the external IP address
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EXTERNAL_IP_SERVICES=( \
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'https://check.torproject.org/' \
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'https://www.whatsmydns.net/whats-my-ip-address.html' \
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'https://www.privateinternetaccess.com/pages/whats-my-ip/' \
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'http://checkip.two-dns.de' \
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'http://ip.dnsexit.com' \
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'http://ifconfig.me/ip' \
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'http://ipecho.net/plain' \
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'http://checkip.dyndns.org/plain' \
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'http://ipogre.com/linux.php' \
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'http://whatismyipaddress.com/' \
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'http://ip.my-proxy.com/' \
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'http://websiteipaddress.com/WhatIsMyIp' \
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'http://getmyipaddress.org/' \
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'http://www.my-ip-address.net/' \
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'http://myexternalip.com/raw' \
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'http://www.canyouseeme.org/' \
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'http://www.trackip.net/' \
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'http://icanhazip.com/' \
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'http://www.iplocation.net/' \
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'http://www.howtofindmyipaddress.com/' \
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'http://www.ipchicken.com/' \
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'http://whatsmyip.net/' \
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'http://www.ip-adress.com/' \
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'http://checkmyip.com/' \
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'http://www.tracemyip.org/' \
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'http://checkmyip.net/' \
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'http://www.lawrencegoetz.com/programs/ipinfo/' \
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'http://www.findmyip.co/' \
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'http://ip-lookup.net/' \
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'http://www.dslreports.com/whois' \
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'http://www.mon-ip.com/en/my-ip/' \
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'http://www.myip.ru' \
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'http://ipgoat.com/' \
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'http://www.myipnumber.com/my-ip-address.asp' \
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'http://www.whatsmyipaddress.net/' \
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'http://formyip.com/' \
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'http://www.displaymyip.com/' \
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'http://www.bobborst.com/tools/whatsmyip/' \
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'http://www.geoiptool.com/' \
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'http://checkip.dyndns.com/' \
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'http://myexternalip.com/' \
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'http://www.ip-adress.eu/' \
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'http://www.infosniper.net/' \
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'http://wtfismyip.com/' \
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'http://ipinfo.io/' \
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'http://httpbin.org/ip')
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function update_inadyn_config {
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if [ ! -f "${INADYN_CONFIG_FILE}" ]; then
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return
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fi
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if [[ "$DDNS_PROVIDER" == *'freedns'* ]]; then
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return
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fi
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if ! grep -q "$DDNS_PROVIDER" "${INADYN_CONFIG_FILE}"; then
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if grep -q "{" "${INADYN_CONFIG_FILE}"; then
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sed -i "s|provider .*|provider $DDNS_PROVIDER {|g" "${INADYN_CONFIG_FILE}"
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sed -i "s|username .*|username = $DDNS_USERNAME|g" "${INADYN_CONFIG_FILE}"
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sed -i "s|password .*|password = $DDNS_PASSWORD|g" "${INADYN_CONFIG_FILE}"
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sed -i "s|checkip-server .*|checkip-server = $GET_IP_ADDRESS_URL|g" "${INADYN_CONFIG_FILE}"
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else
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# Old inadyn config file format
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# store any previous aliases
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grep 'alias ' "${INADYN_CONFIG_FILE}" > /tmp/inadyn_aliases
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# remove entry for any previous ddns
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sed -i '/system /,$d' "${INADYN_CONFIG_FILE}"
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# add the new provider
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{ echo '';
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echo "system $DDNS_PROVIDER";
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echo ' ssl';
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echo " checkip-url $GET_IP_ADDRESS_URL /"; } >> "${INADYN_CONFIG_FILE}"
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if [ "$DDNS_USERNAME" ]; then
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echo " username $DDNS_USERNAME" >> "${INADYN_CONFIG_FILE}"
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fi
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if [ "$DDNS_PASSWORD" ]; then
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echo " password $DDNS_PASSWORD" >> "${INADYN_CONFIG_FILE}"
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fi
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if [ -f /tmp/inadyn_aliases ]; then
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cat /tmp/inadyn_aliases >> "${INADYN_CONFIG_FILE}"
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rm /tmp/inadyn_aliases
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fi
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fi
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else
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if grep -q "{" "${INADYN_CONFIG_FILE}"; then
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sed -i "s|username .*|username = $DDNS_USERNAME|g" "${INADYN_CONFIG_FILE}"
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sed -i "s|password .*|password = $DDNS_PASSWORD|g" "${INADYN_CONFIG_FILE}"
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sed -i "s|checkip-server .*|checkip-server = $GET_IP_ADDRESS_URL|g" "${INADYN_CONFIG_FILE}"
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else
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# Old inadyn config file format
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# change username/password for an existing provider
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if [ "$DDNS_USERNAME" ]; then
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if grep -q " username " "${INADYN_CONFIG_FILE}"; then
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sed -i "s| username .*| username $DDNS_USERNAME|g" "${INADYN_CONFIG_FILE}"
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else
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echo " username $DDNS_USERNAME" >> "${INADYN_CONFIG_FILE}"
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fi
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fi
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if [ "$DDNS_PASSWORD" ]; then
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if grep -q " password " "${INADYN_CONFIG_FILE}"; then
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sed -i "s| password .*| password $DDNS_PASSWORD|g" "${INADYN_CONFIG_FILE}"
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else
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echo " password $DDNS_PASSWORD" >> "${INADYN_CONFIG_FILE}"
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fi
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fi
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fi
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fi
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systemctl enable inadyn
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systemctl restart inadyn
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}
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function create_freedns_updater {
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if [[ $ONION_ONLY != "no" ]]; then
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return
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fi
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# currently inadyn doesn't work as expected with freeDNS, so this is a workaround
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if [[ $(is_completed "${FUNCNAME[0]}") == "1" ]]; then
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return
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fi
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if [[ $DDNS_PROVIDER != *"freedns"* ]]; then
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return
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fi
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if [[ $SYSTEM_TYPE == "mesh"* ]]; then
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return
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fi
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# remove any legacy command
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if [ -f /usr/bin/dynamicdns ]; then
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rm /usr/bin/dynamicdns
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fi
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if grep -q "dynamicdns" /etc/crontab; then
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sed -i '/dynamicdns/d' /etc/crontab
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fi
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# add the update command to cron
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if ! grep -q "/usr/local/bin/${PROJECT_NAME}-freedns" /etc/crontab; then
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function_check cron_add_mins
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cron_add_mins 3 "/usr/local/bin/${PROJECT_NAME}-freedns"
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systemctl restart cron
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fi
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mark_completed "${FUNCNAME[0]}"
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}
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function add_ddns_domain {
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if [ ! "$1" ]; then
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echo $'ddns domain not specified'
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exit 5638
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fi
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CURRENT_DDNS_DOMAIN="$1"
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if [[ $ONION_ONLY != "no" ]]; then
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return
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fi
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if [ ! "$DDNS_PROVIDER" ]; then
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return
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fi
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if [[ "$DDNS_PROVIDER" == 'none' ]]; then
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return
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fi
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if [ ! -f "${INADYN_CONFIG_FILE}" ]; then
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echo $'Unable to find inadyn configuration file "${INADYN_CONFIG_FILE}"'
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exit 5745
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fi
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if ! grep -q "$DDNS_PROVIDER" "${INADYN_CONFIG_FILE}"; then
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{ echo 'period = 300';
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echo 'user-agent = Mozilla/5.0';
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echo '';
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echo "provider $DDNS_PROVIDER {";
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echo " ssl = true";
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echo " checkip-ssl = false";
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echo " checkip-server = $GET_IP_ADDRESS_URL";
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echo " username = $DDNS_USERNAME";
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echo " password = $DDNS_PASSWORD";
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echo " hostname = { $CURRENT_DDNS_DOMAIN }";
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echo '}'; } > "${INADYN_CONFIG_FILE}"
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else
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sed -i "s|checkip-server .*|checkip-server = $GET_IP_ADDRESS_URL|g" "${INADYN_CONFIG_FILE}"
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fi
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if ! grep -q "$CURRENT_DDNS_DOMAIN" "${INADYN_CONFIG_FILE}"; then
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DDNS_HOSTNAMES=$(grep 'hostname ' "${INADYN_CONFIG_FILE}"| awk -F '{' '{print $2}' | sed 's| }||g')
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sed -i "s|hostname .*|hostname = {${DDNS_HOSTNAMES}, ${CURRENT_DDNS_DOMAIN} }|g" "${INADYN_CONFIG_FILE}"
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fi
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chmod 600 "${INADYN_CONFIG_FILE}"
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systemctl daemon-reload
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systemctl restart inadyn
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}
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function remove_ddns_domain {
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if [ ! "$1" ]; then
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echo $'ddns domain not specified'
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exit 5638
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fi
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CURRENT_DDNS_DOMAIN="$1"
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if [[ $ONION_ONLY != "no" ]]; then
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return
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fi
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if [[ "$DDNS_PROVIDER" == 'none' ]]; then
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return
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fi
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if [ ! -f "${INADYN_CONFIG_FILE}" ]; then
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echo $'Unable to find inadyn configuration file "${INADYN_CONFIG_FILE}"'
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exit 5745
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fi
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if grep -q "$CURRENT_DDNS_DOMAIN" "${INADYN_CONFIG_FILE}"; then
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systemctl stop inadyn
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sed -i "s|, ${CURRENT_DDNS_DOMAIN}||g" "${INADYN_CONFIG_FILE}"
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if grep -q "$CURRENT_DDNS_DOMAIN" "${INADYN_CONFIG_FILE}"; then
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sed -i "s|${CURRENT_DDNS_DOMAIN}||g" "${INADYN_CONFIG_FILE}"
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fi
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systemctl daemon-reload
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systemctl start inadyn
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fi
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}
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function configure_dns {
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if [[ $(is_completed "${FUNCNAME[0]}") == "1" ]]; then
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return
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fi
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apt-get -yq install resolvconf
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resolvconf=/etc/resolvconf/resolv.conf.d/head
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# allow changes to resolv.conf
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chattr -i $resolvconf
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{ echo 'domain localdomain';
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echo 'search localdomain';
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echo "nameserver $NAMESERVER1";
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echo "nameserver $NAMESERVER2";
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echo "nameserver $NAMESERVER3";
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echo "nameserver $NAMESERVER4";
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echo "nameserver $NAMESERVER5";
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echo "nameserver $NAMESERVER6"; } > $resolvconf
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# prevent resolv.conf from changing
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resolvconf -u
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mark_completed "${FUNCNAME[0]}"
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}
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function set_hostname {
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DEFAULT_DOMAIN_NAME="$1"
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echo "$DEFAULT_DOMAIN_NAME" > /etc/hostname
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hostname "$DEFAULT_DOMAIN_NAME"
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echo "$DEFAULT_DOMAIN_NAME" > /etc/mailname
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if grep -q "127.0.1.1" /etc/hosts; then
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sed -i "s/127.0.1.1.*/127.0.1.1 $DEFAULT_DOMAIN_NAME/g" /etc/hosts
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else
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echo "127.0.1.1 $DEFAULT_DOMAIN_NAME" >> /etc/hosts
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fi
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}
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function set_your_domain_name {
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if [[ $(is_completed "${FUNCNAME[0]}") == "1" ]]; then
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return
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fi
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function_check set_hostname
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set_hostname "$DEFAULT_DOMAIN_NAME"
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mark_completed "${FUNCNAME[0]}"
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}
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function configure_firewall_for_dns {
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if [[ $(is_completed "${FUNCNAME[0]}") == "1" ]]; then
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return
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fi
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if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
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# docker does its own firewalling
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return
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fi
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iptables -A INPUT -p udp -m udp --dport 1024:65535 --sport 53 -j ACCEPT
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function_check save_firewall_settings
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save_firewall_settings
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mark_completed "${FUNCNAME[0]}"
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}
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# NOTE: deliberately no exit 0
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