freedombone/src/freedombone-utils-onion

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#!/bin/bash
#
# .---. . .
# | | |
# |--- .--. .-. .-. .-.| .-. .--.--. |.-. .-. .--. .-.
# | | (.-' (.-' ( | ( )| | | | )( )| | (.-'
# ' ' --' --' -' - -' ' ' -' -' -' ' - --'
#
# Freedom in the Cloud
#
# Onion functions
#
# License
# =======
#
# Copyright (C) 2014-2018 Bob Mottram <bob@freedombone.net>
#
# 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/>.
# The maximum amount of traffic per day in gigabytes
TOR_MAX_TRAFFIC_PER_MONTH_GB=10
USE_V2_ONION_ADDRESS=
HIDDEN_SERVICE_PATH='/var/lib/tor/hidden_service_'
function add_email_hostname {
extra_email_hostname="$1"
email_hostnames=$(grep "dc_other_hostnames" /etc/exim4/update-exim4.conf.conf | awk -F "'" '{print $2}')
if [[ "$email_hostnames" != *"$extra_email_hostname"* ]]; then
sed -i "s|dc_other_hostnames=.*|dc_other_hostnames='$email_hostnames;$extra_email_hostname'|g" /etc/exim4/update-exim4.conf.conf
update-exim4.conf
dpkg-reconfigure --frontend noninteractive exim4-config
systemctl restart saslauthd
fi
}
function onion_update {
# update so that new onion services appear
systemctl restart tor
}
function wait_for_onion_service_base {
onion_service_name="$1"
sleep_ctr=0
while [ ! -f "${HIDDEN_SERVICE_PATH}${onion_service_name}/hostname" ]; do
sleep 1
sleep_ctr=$((sleep_ctr + 1))
if [ $sleep_ctr -gt 10 ]; then
break
fi
done
}
function wait_for_onion_service {
onion_service_name="$1"
wait_for_onion_service_base "${onion_service_name}"
if [ ! -f "${HIDDEN_SERVICE_PATH}${onion_service_name}/hostname" ]; then
# try a second time
onion_update
wait_for_onion_service_base "${onion_service_name}"
fi
sync
}
function remove_onion_service {
onion_service_name="$1"
onion_service_port_to=$2
nick="$3"
if [ ${#nick} -gt 0 ]; then
sed -i "/stealth ${nick}/d" /etc/tor/torrc
fi
sed -i "/hidden_service_${onion_service_name}/,+1 d" /etc/tor/torrc
sed -i "/hidden_service_${onion_service_name}_mobile/,+1 d" /etc/tor/torrc
sed -i "/127.0.0.1:${onion_service_port_to}/d" /etc/tor/torrc
if [ "$3" ]; then
sed -i "/127.0.0.1:${3}/d" /etc/tor/torrc
if [ "$4" ]; then
sed -i "/127.0.0.1:${4}/d" /etc/tor/torrc
if [ "$5" ]; then
sed -i "/127.0.0.1:${5}/d" /etc/tor/torrc
fi
fi
fi
if [ -d "${HIDDEN_SERVICE_PATH}${onion_service_name}" ]; then
shred -zu "${HIDDEN_SERVICE_PATH}${onion_service_name}/"*
rm -rf "${HIDDEN_SERVICE_PATH}${onion_service_name}"
fi
if [ -d "${HIDDEN_SERVICE_PATH}${onion_service_name}_mobile" ]; then
shred -zu "${HIDDEN_SERVICE_PATH}${onion_service_name}_mobile/"*
rm -rf "${HIDDEN_SERVICE_PATH}${onion_service_name}_mobile"
fi
remove_completion_param "${onion_service_name} onion domain"
onion_update
}
function add_onion_service {
onion_service_name="$1"
onion_service_port_from=$2
onion_service_port_to=$3
onion_stealth_name="$4"
if [ -f "${HIDDEN_SERVICE_PATH}${onion_service_name}/hostname" ]; then
cat "${HIDDEN_SERVICE_PATH}${onion_service_name}/hostname"
USE_V2_ONION_ADDRESS=
return
fi
if [ ! -d /var/lib/tor ]; then
echo $"No Tor installation found. ${onion_service_name} onion site cannot be configured."
USE_V2_ONION_ADDRESS=
exit 877367
fi
if ! grep -q "hidden_service_${onion_service_name}" /etc/tor/torrc; then
echo "HiddenServiceDir ${HIDDEN_SERVICE_PATH}${onion_service_name}/" >> /etc/tor/torrc
if [ ! $USE_V2_ONION_ADDRESS ]; then
echo 'HiddenServiceVersion 3' >> /etc/tor/torrc
else
echo 'HiddenServiceVersion 2' >> /etc/tor/torrc
fi
echo "HiddenServicePort ${onion_service_port_from} 127.0.0.1:${onion_service_port_to}" >> /etc/tor/torrc
if [ ${#onion_stealth_name} -gt 0 ]; then
echo "HiddenServiceAuthorizeClient stealth ${onion_stealth_name}" >> /etc/tor/torrc
fi
fi
USE_V2_ONION_ADDRESS=
onion_update
function_check wait_for_onion_service
wait_for_onion_service "${onion_service_name}"
if [ ! -f "${HIDDEN_SERVICE_PATH}${onion_service_name}/hostname" ]; then
ls -lh "${HIDDEN_SERVICE_PATH}${onion_service_name}/hostname"
echo $"${onion_service_name} onion site hostname not found"
exit 763624
fi
onion_address=$(cat "${HIDDEN_SERVICE_PATH}${onion_service_name}/hostname")
# Record the domain in the completion file
set_completion_param "${onion_service_name} onion domain" "${onion_address}"
echo "$onion_address"
}
function set_default_onion_domains {
# If sites are only visible via Tor then for installation
# purposes assign them some default domain names
if [[ $ONION_ONLY == "no" ]]; then
return
fi
POSTACTIV_DOMAIN_NAME='postactiv.local'
GNUSOCIAL_DOMAIN_NAME='gnusocial.local'
HTMLY_DOMAIN_NAME='htmly.local'
GHOST_DOMAIN_NAME='ghost.local'
DOKUWIKI_DOMAIN_NAME='dokuwiki.local'
DEFAULT_DOMAIN_NAME="${LOCAL_NAME}.local"
GIT_DOMAIN_NAME='gogs.local'
}
function create_avahi_onion_domains {
if [[ $SYSTEM_TYPE == "mesh"* ]]; then
return
fi
if [ ! -d /etc/avahi/services ]; then
return
fi
if [ $GNUSOCIAL_DOMAIN_NAME ]; then
function_check create_avahi_service
create_avahi_service gnusocial http tcp "$GNUSOCIAL_ONION_PORT"
fi
if [ $HTMLY_DOMAIN_NAME ]; then
function_check create_avahi_service
create_avahi_service blog http tcp "$HTMLY_ONION_PORT"
fi
if [ $GIT_DOMAIN_NAME ]; then
function_check create_avahi_service
create_avahi_service git http tcp "$GIT_ONION_PORT"
fi
if [ $DOKUWIKI_DOMAIN_NAME ]; then
function_check create_avahi_service
create_avahi_service dokuwiki http tcp "$DOKUWIKI_ONION_PORT"
fi
}
function allow_ssh_to_onion_address {
if [[ $SYSTEM_TYPE == "mesh"* ]]; then
return
fi
if [ ! -d "/home/$MY_USERNAME/.ssh" ]; then
mkdir "/home/$MY_USERNAME/.ssh"
fi
if [ ! -d /etc/tor ]; then
echo $'Tor not found when updating ssh'
exit 528257
fi
if ! grep -q "onion" "/home/$MY_USERNAME/.ssh/config"; then
echo 'Host *.onion' >> "/home/$MY_USERNAME/.ssh/config"
echo 'ProxyCommand connect -R remote -5 -S 127.0.0.1:9050 %h %p' >> "/home/$MY_USERNAME/.ssh/config"
fi
}
function enable_ssh_via_onion {
if [[ $SYSTEM_TYPE == "mesh"* ]]; then
return
fi
if [[ $(is_completed "${FUNCNAME[0]}") == "1" ]]; then
return
fi
apt-get -yq install tor connect-proxy
if ! grep -q 'Host *.onion' "/home/$MY_USERNAME/.ssh/config"; then
if [ ! -d "/home/$MY_USERNAME/.ssh" ]; then
mkdir "/home/$MY_USERNAME/.ssh"
fi
echo 'Host *.onion' >> "/home/$MY_USERNAME/.ssh/config"
echo 'ProxyCommand connect -R remote -5 -S 127.0.0.1:9050 %h %p' >> "/home/$MY_USERNAME/.ssh/config"
chown "$MY_USERNAME":"$MY_USERNAME" "/home/$MY_USERNAME/.ssh"
chown "$MY_USERNAME":"$MY_USERNAME" "/home/$MY_USERNAME/.ssh/config"
fi
if ! grep -q 'Host *.onion' /root/.ssh/config; then
if [ ! -d /root/.ssh ]; then
mkdir /root/.ssh
fi
echo 'Host *.onion' >> /root/.ssh/config
echo 'ProxyCommand connect -R remote -5 -S 127.0.0.1:9050 %h %p' >> /root/.ssh/config
fi
if ! grep -q 'Host *.onion' /etc/skel/.ssh/config; then
if [ ! -d /etc/skel/.ssh ]; then
mkdir /etc/skel/.ssh
fi
echo 'Host *.onion' >> /etc/skel/.ssh/config
echo 'ProxyCommand connect -R remote -5 -S 127.0.0.1:9050 %h %p' >> /etc/skel/.ssh/config
fi
mark_completed "${FUNCNAME[0]}"
}
function configure_ssh_onion {
if [[ $(is_completed "${FUNCNAME[0]}") == "1" ]]; then
return
fi
if [[ $SYSTEM_TYPE == "mesh"* ]]; then
return
fi
SSH_ONION_HOSTNAME=$(add_onion_service ssh "${SSH_PORT}" "${SSH_PORT}")
if [[ "$SSH_ONION_HOSTNAME" != *'.onion' ]]; then
echo $'ssh onion site not generated'
exit 624128
fi
set_completion_param "ssh onion domain" "${SSH_ONION_HOSTNAME}"
add_email_hostname "${SSH_ONION_HOSTNAME}"
mark_completed "${FUNCNAME[0]}"
}
function install_tor {
if [[ $SYSTEM_TYPE == "mesh*" ]]; then
return
fi
if [[ $(is_completed "${FUNCNAME[0]}") == "1" ]]; then
return
fi
apt-get -yq -t stretch-backports install tor
if [ ! -f /etc/tor/torrc ]; then
echo 'Tor failed to install'
exit 38259
fi
# For torify
apt-get -yq install torsocks
# turn off logging
sed -i 's|#Log notice file.*|Log notice file /dev/null|g' /etc/tor/torrc
sed -i 's|Log notice file.*|Log notice file /dev/null|g' /etc/tor/torrc
# Restrict traffic
sed -i "s|#AccountingMax.*|AccountingMax $TOR_MAX_TRAFFIC_PER_MONTH_GB GBytes|g" /etc/tor/torrc
sed -i "s|AccountingMax.*|AccountingMax $TOR_MAX_TRAFFIC_PER_MONTH_GB GBytes|g" /etc/tor/torrc
mark_completed "${FUNCNAME[0]}"
}
function resolve_dns_via_tor {
if [[ $SYSTEM_TYPE == "mesh"* ]]; then
return
fi
if [[ $(is_completed "${FUNCNAME[0]}") == "1" ]]; then
return
fi
if [ ! -f /etc/tor/torrc ]; then
echo $'tor was not installed'
exit 52952
fi
# resolve DNS via tor
if ! grep -q 'DNSPort 53' /etc/tor/torrc; then
{ echo 'DNSPort 53';
echo 'AutomapHostsOnResolve 1';
echo 'AutomapHostsSuffixes .exit,.onion'; } >> /etc/tor/torrc
onion_update
fi
# don't change resolv.conf
sed -i 's|, domain-name-servers||g' /etc/dhcp/dhclient.conf
# point resolv.conf to tor
resolvconf=/etc/resolvconf/resolv.conf.d/head
echo 'nameserver 127.0.0.1:53' > $resolvconf
resolvconf -u
mark_completed "${FUNCNAME[0]}"
}
# see https://trac.torproject.org/projects/tor/wiki/doc/TransparentProxy
# Local Redirection and Anonymizing Middlebox
function route_outgoing_traffic_through_tor {
if [[ $(is_completed "${FUNCNAME[0]}") == "1" ]]; then
return
fi
if [[ $ROUTE_THROUGH_TOR != "yes" ]]; then
return
fi
apt-get -yq 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
function_check save_firewall_settings
save_firewall_settings
if ! grep -q "fs.file-max" /etc/sysctl.conf; then
echo "fs.file-max=100000" >> /etc/sysctl.conf
/sbin/sysctl -p -q
fi
resolvconf=/etc/resolvconf/resolv.conf.d/head
echo 'domain localdomain' > $resolvconf
echo 'search localdomain' >> $resolvconf
echo 'nameserver 127.0.0.1' >> $resolvconf
resolvconf -u
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 $LOCAL_NETWORK_STATIC_IP_ADDRESS" >> /etc/tor/torrc
fi
mark_completed "${FUNCNAME[0]}"
}
function get_app_onion_address {
app_name="$1"
mobilestr="$2"
if [ ${#mobilestr} -gt 0 ]; then
app_name="mobile${app_name}"
fi
if grep -q "${app_name} onion domain" "$COMPLETION_FILE"; then
if grep -q "${app_name} onion domain" "$COMPLETION_FILE"; then
grep "${app_name} onion domain" "${COMPLETION_FILE}" | head -n 1 | awk -F ':' '{print $2}'
return
fi
fi
echo ""
}
function tor_add_bridge {
bridge_ip_address="$1"
bridge_port="$2"
bridge_key="$3"
bridge_type='obfs4'
if [[ "$bridge_ip_address" != *"."* ]]; then
return
fi
if [ ${#bridge_port} -eq 0 ]; then
return
fi
if [ ${#bridge_key} -eq 0 ]; then
return
fi
apt-get -yq install obfs4proxy
if grep -q "ClientTransportPlugin" /etc/tor/torrc; then
sed -i 's|#ClientTransportPlugin|ClientTransportPlugin|g' /etc/tor/torrc
sed -i 's|# ClientTransportPlugin|ClientTransportPlugin|g' /etc/tor/torrc
sed -i 's|ClientTransportPlugin.*|ClientTransportPlugin obfs4 exec /usr/bin/obfs4proxy managed|g' /etc/tor/torrc
else
echo 'ClientTransportPlugin obfs4 exec /usr/bin/obfs4proxy managed' >> /etc/tor/torrc
fi
if grep -q "UseBridges" /etc/tor/torrc; then
sed -i 's|#UseBridges|UseBridges|g' /etc/tor/torrc
sed -i 's|# UseBridges|UseBridges|g' /etc/tor/torrc
sed -i 's|UseBridges.*|UseBridges 1|g' /etc/tor/torrc
else
echo 'UseBridges 1' >> /etc/tor/torrc
fi
bridge_str="Bridge $bridge_type ${bridge_ip_address}:${bridge_port} ${bridge_key}"
if ! grep -q "${bridge_str}" /etc/tor/torrc; then
sed -i "/UseBridges/a ${bridge_str}" >> /etc/tor/torrc
fi
systemctl restart tor
}
function tor_remove_bridge {
bridge_ip_address="$1"
bridge_type='obfs4'
if [[ "$bridge_ip_address" == *"."* ]]; then
bridge_str="Bridge $bridge_type ${bridge_ip_address}"
else
if grep -q " ${bridge_ip_address}" /etc/tor/torrc; then
bridge_str=" ${bridge_ip_address}"
else
return
fi
fi
if grep -q "${bridge_str}" /etc/tor/torrc; then
sed -i "/${bridge_str}/d" /etc/tor/torrc
fi
# If there are no bridges remaining then remove UseBridges
if ! grep -q "Bridge " /etc/tor/torrc; then
if ! grep -q "#UseBridges" /etc/tor/torrc; then
sed -i 's|UseBridges|#UseBridges|g' /etc/tor/torrc
fi
if ! grep -q "#ClientTransportPlugin" /etc/tor/torrc; then
sed -i 's|ClientTransportPlugin|#ClientTransportPlugin|g' /etc/tor/torrc
fi
fi
systemctl restart tor
}
function tor_create_bridge_relay {
read_config_param 'TOR_BRIDGE_PORT'
read_config_param 'TOR_BRIDGE_NICKNAME'
if [ ! "$TOR_BRIDGE_PORT" ]; then
return
fi
if [ ${#TOR_BRIDGE_PORT} -eq 0 ]; then
return
fi
if [ ${#TOR_BRIDGE_NICKNAME} -eq 0 ]; then
return
fi
apt-get -yq install obfs4proxy
sed -i 's|#BridgeRelay.*|BridgeRelay 1|g' /etc/tor/torrc
sed -i 's|BridgeRelay.*|BridgeRelay 1|g' /etc/tor/torrc
sed -i 's|#ServerTransportPlugin.*|ServerTransportPlugin obfs4 exec /usr/bin/obfs4proxy|g' /etc/tor/torrc
sed -i 's|ServerTransportPlugin.*|ServerTransportPlugin obfs4 exec /usr/bin/obfs4proxy|g' /etc/tor/torrc
if ! grep -q 'ExtORPort ' /etc/tor/torrc; then
echo "ExtORPort $TOR_BRIDGE_PORT" >> /etc/tor/torrc
else
sed -i "s|#ExtORPort .*|ExtORPort $TOR_BRIDGE_PORT|g" /etc/tor/torrc
sed -i "s|ExtORPort .*|ExtORPort $TOR_BRIDGE_PORT|g" /etc/tor/torrc
fi
read_config_param 'MY_EMAIL_ADDRESS'
sed -i "s|#ContactInfo.*|ContactInfo $MY_EMAIL_ADDRESS|g" /etc/tor/torrc
if [ "$TOR_BRIDGE_NICKNAME" ]; then
sed -i "s|#Nickname.*|Nickname $TOR_BRIDGE_NICKNAME|g" /etc/tor/torrc
sed -i "s|Nickname.*|Nickname $TOR_BRIDGE_NICKNAME|g" /etc/tor/torrc
fi
firewall_add tor_bridge "$TOR_BRIDGE_PORT" tcp
systemctl restart tor
}
function tor_remove_bridge_relay {
if ! grep -q '#BridgeRelay ' /etc/tor/torrc; then
sed -i 's|BridgeRelay |#BridgeRelay |g' /etc/tor/torrc
fi
if ! grep -q '#ServerTransportPlugin ' /etc/tor/torrc; then
sed -i 's|ServerTransportPlugin |#ServerTransportPlugin |g' /etc/tor/torrc
fi
if ! grep -q '#ExtORPort ' /etc/tor/torrc; then
sed -i 's|ExtORPort |#ExtORPort |g' /etc/tor/torrc
fi
if ! grep -q '#ContactInfo ' /etc/tor/torrc; then
sed -i "s|ContactInfo |#ContactInfo |g" /etc/tor/torrc
fi
if ! grep -q '#Nickname ' /etc/tor/torrc; then
sed -i "s|Nickname |#Nickname |g" /etc/tor/torrc
fi
read_config_param 'TOR_BRIDGE_PORT'
firewall_remove "$TOR_BRIDGE_PORT" tcp
systemctl restart tor
}
# NOTE: deliberately no exit 0