367 lines
10 KiB
Bash
Executable File
367 lines
10 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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# ' ' --' --' -' - -' ' ' -' -' -' ' - --'
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#
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# Freedom in the Cloud
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#
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# Onion functions
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#
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# License
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# =======
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#
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# Copyright (C) 2014-2016 Bob Mottram <bob@robotics.uk.to>
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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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function wait_for_onion_service {
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onion_service_name="$1"
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sleep_ctr=0
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while [ ! -f /var/lib/tor/hidden_service_${onion_service_name}/hostname ]; do
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sleep 1
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sleep_ctr=$((sleep_ctr + 1))
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if [ $sleep_ctr -gt 10 ]; then
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break
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fi
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done
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if [ ! -f /var/lib/tor/hidden_service_${onion_service_name}/hostname ]; then
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# restart and try a second time
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systemctl restart tor
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sleep_ctr=0
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while [ ! -f /var/lib/tor/hidden_service_${onion_service_name}/hostname ]; do
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sleep 1
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sleep_ctr=$((sleep_ctr + 1))
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if [ $sleep_ctr -gt 10 ]; then
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break
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fi
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done
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fi
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}
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function remove_onion_service {
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onion_service_name="$1"
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onion_service_port_to=$2
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sed -i "/hidden_service_${onion_service_name}/d" /etc/tor/torrc
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sed -i "/127.0.0.1:${onion_service_port_to}/d" /etc/tor/torrc
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if [ $3 ]; then
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sed -i "/127.0.0.1:${3}/d" /etc/tor/torrc
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if [ $4 ]; then
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sed -i "/127.0.0.1:${4}/d" /etc/tor/torrc
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if [ $5 ]; then
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sed -i "/127.0.0.1:${5}/d" /etc/tor/torrc
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fi
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fi
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fi
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systemctl restart tor
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}
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function add_onion_service {
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onion_service_name="$1"
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onion_service_port_from=$2
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onion_service_port_to=$3
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if [ -f /var/lib/tor/hidden_service_${onion_service_name}/hostname ]; then
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echo $(cat /var/lib/tor/hidden_service_${onion_service_name}/hostname)
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return
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fi
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if [ ! -d /var/lib/tor ]; then
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echo $"No Tor installation found. ${onion_service_name} onion site cannot be configured."
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exit 877367
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fi
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if ! grep -q "hidden_service_${onion_service_name}" /etc/tor/torrc; then
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echo "HiddenServiceDir /var/lib/tor/hidden_service_${onion_service_name}/" >> /etc/tor/torrc
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echo "HiddenServicePort ${onion_service_port_from} 127.0.0.1:${onion_service_port_to}" >> /etc/tor/torrc
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fi
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systemctl restart tor
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function_check wait_for_onion_service
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wait_for_onion_service ${onion_service_name}
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if [ ! -f /var/lib/tor/hidden_service_${onion_service_name}/hostname ]; then
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echo $"${onion_service_name} onion site hostname not found"
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exit 76362
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fi
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echo $(cat /var/lib/tor/hidden_service_${onion_service_name}/hostname)
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}
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function set_default_onion_domains {
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# If sites are only visible via Tor then for installation
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# purposes assign them some default domain names
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if [[ $ONION_ONLY == "no" ]]; then
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return
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fi
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if [ ${#MICROBLOG_DOMAIN_NAME} -gt 1 ]; then
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MICROBLOG_DOMAIN_NAME='microblog.local'
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fi
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if [ ${#FULLBLOG_DOMAIN_NAME} -gt 1 ]; then
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FULLBLOG_DOMAIN_NAME='blog.local'
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fi
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if [ ${#WIKI_DOMAIN_NAME} -gt 1 ]; then
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WIKI_DOMAIN_NAME='wiki.local'
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fi
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if [ ${#DEFAULT_DOMAIN_NAME} -gt 1 ]; then
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DEFAULT_DOMAIN_NAME="${PROJECT_NAME}.local"
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fi
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if [ ${#GIT_DOMAIN_NAME} -gt 1 ]; then
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GIT_DOMAIN_NAME='git.local'
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fi
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if [ ${#MEDIAGOBLIN_DOMAIN_NAME} -gt 1 ]; then
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MEDIAGOBLIN_DOMAIN_NAME='media.local'
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fi
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}
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function create_avahi_onion_domains {
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if [[ $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
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return
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fi
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if [ ! -d /etc/avahi/services ]; then
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return
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fi
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if [ $MICROBLOG_DOMAIN_NAME ]; then
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function_check create_avahi_service
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create_avahi_service microblog http tcp $MICROBLOG_ONION_PORT
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fi
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if [ $FULLBLOG_DOMAIN_NAME ]; then
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function_check create_avahi_service
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create_avahi_service blog http tcp $BLOG_ONION_PORT
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fi
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if [ $GIT_DOMAIN_NAME ]; then
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function_check create_avahi_service
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create_avahi_service git http tcp $GIT_ONION_PORT
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fi
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if [ $WIKI_DOMAIN_NAME ]; then
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function_check create_avahi_service
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create_avahi_service wiki http tcp $WIKI_ONION_PORT
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fi
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}
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function allow_ssh_to_onion_address {
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if [[ $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
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return
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fi
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if [ ! -d /home/$MY_USERNAME/.ssh ]; then
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mkdir /home/$MY_USERNAME/.ssh
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fi
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if [ ! -d /etc/tor ]; then
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echo $'Tor not found when updating ssh'
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exit 528257
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fi
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if ! grep -q "onion" /home/$MY_USERNAME/.ssh/config; then
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echo 'Host *.onion' >> /home/$MY_USERNAME/.ssh/config
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echo 'ProxyCommand connect -R remote -5 -S 127.0.0.1:9050 %h %p' >> /home/$MY_USERNAME/.ssh/config
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fi
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}
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function enable_ssh_via_onion {
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if [[ $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
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return
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fi
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if grep -Fxq "enable_ssh_via_onion" $COMPLETION_FILE; then
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return
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fi
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apt-get -y install tor connect-proxy
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if ! grep -q 'Host *.onion' /home/$MY_USERNAME/.ssh/config; then
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if [ ! -d /home/$MY_USERNAME/.ssh ]; then
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mkdir /home/$MY_USERNAME/.ssh
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fi
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echo 'Host *.onion' >> /home/$MY_USERNAME/.ssh/config
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echo 'ProxyCommand connect -R remote -5 -S 127.0.0.1:9050 %h %p' >> /home/$MY_USERNAME/.ssh/config
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chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.ssh
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chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.ssh/config
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fi
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if ! grep -q 'Host *.onion' /root/.ssh/config; then
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if [ ! -d /root/.ssh ]; then
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mkdir /root/.ssh
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fi
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echo 'Host *.onion' >> /root/.ssh/config
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echo 'ProxyCommand connect -R remote -5 -S 127.0.0.1:9050 %h %p' >> /root/.ssh/config
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fi
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echo 'enable_ssh_via_onion' >> $COMPLETION_FILE
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}
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function configure_ssh_onion {
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if grep -Fxq "configure_ssh_onion" $COMPLETION_FILE; then
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return
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fi
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if [[ $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
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return
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fi
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SSH_ONION_HOSTNAME=$(add_onion_service ssh ${SSH_PORT} ${SSH_PORT})
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if ! grep -q "ssh onion domain" $COMPLETION_FILE; then
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echo "ssh onion domain:${SSH_ONION_HOSTNAME}" >> $COMPLETION_FILE
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else
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sed -i "s|ssh onion domain.*|ssh onion domain:${SSH_ONION_HOSTNAME}|g" $COMPLETION_FILE
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fi
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echo 'configure_ssh_onion' >> $COMPLETION_FILE
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}
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function install_tor {
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if [[ $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
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return
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fi
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if grep -Fxq "install_tor" $COMPLETION_FILE; then
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return
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fi
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apt-get -y install tor
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if [ ! -f /etc/tor/torrc ]; then
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echo 'Tor failed to install'
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exit 38259
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fi
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echo 'install_tor' >> $COMPLETION_FILE
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}
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function resolve_dns_via_tor {
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if [[ $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
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return
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fi
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if grep -Fxq "resolve_dns_via_tor" $COMPLETION_FILE; then
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return
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fi
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if [ ! -f /etc/tor/torrc ]; then
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echo $'tor was not installed'
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exit 52952
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fi
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# resolve DNS via tor
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if ! grep 'DNSPort 53' /etc/tor/torrc; then
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echo 'DNSPort 53' >> /etc/tor/torrc
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echo 'AutomapHostsOnResolve 1' >> /etc/tor/torrc
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echo 'AutomapHostsSuffixes .exit,.onion' >> /etc/tor/torrc
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systemctl restart tor
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fi
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# don't change resolv.conf
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sed -i 's|, domain-name-servers||g' /etc/dhcp/dhclient.conf
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# point resolv.conf to tor
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echo 'nameserver 127.0.0.1:53' > /etc/resolv.conf
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# prevent resolv.conf from changing
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chattr +i /etc/resolv.conf
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echo 'resolve_dns_via_tor' >> $COMPLETION_FILE
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}
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# see https://trac.torproject.org/projects/tor/wiki/doc/TransparentProxy
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# Local Redirection and Anonymizing Middlebox
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function route_outgoing_traffic_through_tor {
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if grep -Fxq "route_outgoing_traffic_through_tor" $COMPLETION_FILE; then
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return
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fi
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if [[ $ROUTE_THROUGH_TOR != "yes" ]]; then
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return
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fi
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apt-get -y install tor tor-arm
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### set variables
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# Destinations you don't want routed through Tor
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_non_tor="192.168.1.0/24 192.168.0.0/24"
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# The user that Tor runs as
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_tor_uid="debian-tor"
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# Tor's TransPort
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_trans_port="9040"
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# Your internal interface
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_int_if="eth0"
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### Set iptables *nat
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iptables -t nat -A OUTPUT -o lo -j RETURN
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iptables -t nat -A OUTPUT -m owner --uid-owner $_tor_uid -j RETURN
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iptables -t nat -A OUTPUT -p udp --dport 53 -j REDIRECT --to-ports 53
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# Allow clearnet access for hosts in $_non_tor
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for _clearnet in $_non_tor; do
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iptables -t nat -A OUTPUT -d $_clearnet -j RETURN
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iptables -t nat -A PREROUTING -i $_int_if -d $_clearnet -j RETURN
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done
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# Redirect all other pre-routing and output to Tor
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iptables -t nat -A OUTPUT -p tcp --syn -j REDIRECT --to-ports $_trans_port
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iptables -t nat -A PREROUTING -i $_int_if -p udp --dport 53 -j REDIRECT --to-ports 53
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iptables -t nat -A PREROUTING -i $_int_if -p tcp --syn -j REDIRECT --to-ports $_trans_port
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### set iptables *filter
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iptables -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
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# Allow clearnet access for hosts in $_non_tor
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for _clearnet in $_non_tor 127.0.0.0/8; do
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iptables -A OUTPUT -d $_clearnet -j ACCEPT
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done
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# Allow only Tor output
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iptables -A OUTPUT -m owner --uid-owner $_tor_uid -j ACCEPT
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iptables -A OUTPUT -j REJECT
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function_check save_firewall_settings
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save_firewall_settings
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if ! grep -q "fs.file-max" /etc/sysctl.conf; then
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echo "fs.file-max=100000" >> /etc/sysctl.conf
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/sbin/sysctl -p
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fi
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echo 'domain localdomain' > /etc/resolv.conf
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echo 'search localdomain' >> /etc/resolv.conf
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echo 'nameserver 127.0.0.1' >> /etc/resolv.conf
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if ! grep -q "VirtualAddrNetworkIPv4" /etc/tor/torrc; then
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echo 'VirtualAddrNetworkIPv4 10.192.0.0/10' >> /etc/tor/torrc
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fi
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if ! grep -q "AutomapHostsOnResolve" /etc/tor/torrc; then
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echo 'AutomapHostsOnResolve 1' >> /etc/tor/torrc
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fi
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if ! grep -q "TransPort" /etc/tor/torrc; then
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echo 'TransPort 9040' >> /etc/tor/torrc
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fi
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if ! grep -q "TransListenAddress 127.0.0.1" /etc/tor/torrc; then
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echo 'TransListenAddress 127.0.0.1' >> /etc/tor/torrc
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fi
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if ! grep -q "TransListenAddress $LOCAL_NETWORK_STATIC_IP_ADDRESS" /etc/tor/torrc; then
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echo "TransListenAddress $LOCAL_NETWORK_STATIC_IP_ADDRESS" >> /etc/tor/torrc
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fi
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if ! grep -q "DNSPort" /etc/tor/torrc; then
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echo 'DNSPort 53' >> /etc/tor/torrc
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fi
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if ! grep -q "DNSListenAddress 127.0.0.1" /etc/tor/torrc; then
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echo 'DNSListenAddress 127.0.0.1' >> /etc/tor/torrc
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fi
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if ! grep -q "DNSListenAddress $LOCAL_NETWORK_STATIC_IP_ADDRESS" /etc/tor/torrc; then
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echo "DNSListenAddress $LOCAL_NETWORK_STATIC_IP_ADDRESS" >> /etc/tor/torrc
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fi
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echo 'route_outgoing_traffic_through_tor' >> $COMPLETION_FILE
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}
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# NOTE: deliberately no exit 0
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