#!/bin/bash # # .---. . . # | | | # |--- .--. .-. .-. .-.| .-. .--.--. |.-. .-. .--. .-. # | | (.-' (.-' ( | ( )| | | | )( )| | (.-' # ' ' --' --' -' - -' ' ' -' -' -' ' - --' # # Freedom in the Cloud # # DNS functions # # License # ======= # # Copyright (C) 2014-2016 Bob Mottram # # 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 . # DNS NAMESERVER1='213.73.91.35' NAMESERVER2='85.214.20.141' # parameters used when adding a new domain DDNS_PROVIDER="default@freedns.afraid.org" DDNS_USERNAME= DDNS_PASSWORD= INADYN_REPO="https://github.com/bashrc/inadyn" INADYN_COMMIT='fadbe17f520d337dfb8d69ee4bf1fcaa23fce0d6' # web site used to obtain the external IP address of the system GET_IP_ADDRESS_URL="checkip.two-dns.de" # 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') function create_freedns_updater { if [[ $ONION_ONLY != "no" ]]; then return fi # currently inadyn doesn't work as expected with freeDNS, so this is a workaround if [[ $(is_completed $FUNCNAME) == "1" ]]; then return fi if [[ $DDNS_PROVIDER != *"freedns"* ]]; then return fi if [[ $SYSTEM_TYPE == "mesh"* ]]; then return fi # remove any legacy command if [ -f /usr/bin/dynamicdns ]; then rm /usr/bin/dynamicdns fi if grep -q "dynamicdns" /etc/crontab; then sed -i '/dynamicdns/d' /etc/crontab fi # add the update command to cron if ! grep -q "/usr/local/bin/freedombone-freedns" /etc/crontab; then function_check cron_add_mins cron_add_mins 3 '/usr/local/bin/freedombone-freedns' systemctl restart cron fi mark_completed $FUNCNAME } function add_ddns_domain { if [ ! $1 ]; then echo $'ddns domain not specified' exit 5638 fi CURRENT_DDNS_DOMAIN="$1" if [[ $ONION_ONLY != "no" ]]; then return 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 systemctl restart inadyn systemctl daemon-reload } function configure_dns { if [[ $(is_completed $FUNCNAME) == "1" ]]; then return fi # allow changes to resolv.conf chattr -i /etc/resolv.conf echo 'domain localdomain' > /etc/resolv.conf echo 'search localdomain' >> /etc/resolv.conf echo "nameserver $NAMESERVER1" >> /etc/resolv.conf echo "nameserver $NAMESERVER2" >> /etc/resolv.conf # prevent resolv.conf from changing chattr +i /etc/resolv.conf mark_completed $FUNCNAME } function set_hostname { DEFAULT_DOMAIN_NAME="$1" echo "$DEFAULT_DOMAIN_NAME" > /etc/hostname hostname $DEFAULT_DOMAIN_NAME echo "$DEFAULT_DOMAIN_NAME" > /etc/mailname 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 set_your_domain_name { if [[ $(is_completed $FUNCNAME) == "1" ]]; then return fi function_check set_hostname set_hostname $DEFAULT_DOMAIN_NAME mark_completed $FUNCNAME } function configure_firewall_for_dns { if [[ $(is_completed $FUNCNAME) == "1" ]]; 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 function_check save_firewall_settings save_firewall_settings mark_completed $FUNCNAME } # NOTE: deliberately no exit 0