-#!/bin/sh
-# IPsec startup and shutdown script
-# Copyright (C) 1998, 1999, 2001 Henry Spencer.
-# Copyright (C) 2002 Michael Richardson <mcr@freeswan.org>
+#!/bin/sh
+##################################################
+##### VPN-Watch.sh Version 1.6.3 #####
+##################################################
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
#
-# This program is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License as published by the
-# Free Software Foundation; either version 2 of the License, or (at your
-# option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
+# 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 General Public License for more details.
+
+# Written by: Daniel Berlin <daniel.berlin@itechnology.de>.
+# Download: http://www.itechnology.de/front_content.php?idcat=87
+#
+
+# changed by: Rüdiger Sobeck
+# last changed: 31-01-2006
+
+# Configuration
#
-# 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 General Public License
-# for more details.
-#
-# RCSID $Id: setup.in,v 1.122.6.3 2006/10/26 23:54:32 paul Exp $
-#
-# ipsec init.d script for starting and stopping
-# the IPsec security subsystem (KLIPS and Pluto).
-#
-# This script becomes /etc/rc.d/init.d/ipsec (or possibly /etc/init.d/ipsec)
-# and is also accessible as "ipsec setup" (the preferred route for human
-# invocation).
-#
-# The startup and shutdown times are a difficult compromise (in particular,
-# it is almost impossible to reconcile them with the insanely early/late
-# times of NFS filesystem startup/shutdown). Startup is after startup of
-# syslog and pcmcia support; shutdown is just before shutdown of syslog.
-#
-# chkconfig: 2345 47 76
-# description: IPsec provides encrypted and authenticated communications; \
-# KLIPS is the kernel half of it, Pluto is the user-level management daemon.
-
-me='ipsec setup' # for messages
-
-# where the private directory and the config files are
-IPSEC_EXECDIR="${IPSEC_EXECDIR-/usr/libexec/ipsec}"
-IPSEC_LIBDIR="${IPSEC_LIBDIR-/usr/lib/ipsec}"
-IPSEC_SBINDIR="${IPSEC_SBINDIR-/usr/sbin}"
-IPSEC_CONFS="${IPSEC_CONFS-/etc}"
-
-if test " $IPSEC_DIR" = " " # if we were not called by the ipsec command
-then
- # we must establish a suitable PATH ourselves
- PATH="${IPSEC_SBINDIR}":/sbin:/usr/sbin:/usr/local/bin:/bin:/usr/bin
- export PATH
-
- IPSEC_DIR="$IPSEC_LIBDIR"
- export IPSEC_DIR IPSEC_CONFS IPSEC_LIBDIR IPSEC_EXECDIR
-fi
-
-# Check that the ipsec command is available.
-found=
-for dir in `echo $PATH | tr ':' ' '`
-do
- if test -f $dir/ipsec -a -x $dir/ipsec
- then
- found=yes
- break # NOTE BREAK OUT
- fi
-done
-if ! test "$found"
-then
- echo "cannot find ipsec command -- \`$1' aborted" |
- logger -s -p daemon.error -t ipsec_setup
- exit 1
-fi
-
-# accept a few flags
-
-export IPSEC_setupflags
-IPSEC_setupflags=""
-
-config=""
-
-for dummy
-do
- case "$1" in
- --showonly|--show) IPSEC_setupflags="$1" ;;
- --config) config="--config $2" ; shift ;;
- *) break ;;
- esac
- shift
-done
-
-
-# Pick up IPsec configuration (until we have done this, successfully, we
-# do not know where errors should go, hence the explicit "daemon.error"s.)
-# Note the "--export", which exports the variables created.
-eval `ipsec _confread $config --optional --varprefix IPSEC --export --type config setup`
-
-if test " $IPSEC_confreadstatus" != " "
-then
- case $1 in
- stop|--stop|_autostop)
- echo "$IPSEC_confreadstatus -- \`$1' may not work" |
- logger -s -p daemon.error -t ipsec_setup;;
-
- *) echo "$IPSEC_confreadstatus -- \`$1' aborted" |
- logger -s -p daemon.error -t ipsec_setup;
- exit 1;;
- esac
-fi
-
-IPSEC_confreadsection=${IPSEC_confreadsection:-setup}
-export IPSEC_confreadsection
-
-IPSECsyslog=${IPSECsyslog-daemon.error}
-export IPSECsyslog
-
-# misc setup
-umask 022
-
-mkdir -p /var/run/pluto
-
-
-# do it
-case "$1" in
- start|--start|stop|--stop|_autostop|_autostart)
- wanttodo=$1
- if test " `id -u`" != " 0"
- then
- echo "permission denied (must be superuser)" |
- logger -s -p $IPSECsyslog -t ipsec_setup 2>&1
- exit 1
- fi
- tmp=/var/run/pluto/ipsec_setup.st
- outtmp=/var/run/pluto/ipsec_setup.out
- (
- ipsec _realsetup $1
- echo "$?" >$tmp
- ) > ${outtmp} 2>&1
- st=$?
- if test -f $tmp
- then
- st=`cat $tmp`
- rm -f $tmp
- fi
- if [ -f ${outtmp} ]; then
- cat ${outtmp} | logger -s -p $IPSECsyslog -t ipsec_setup 2>&1
- rm -f ${outtmp}
- fi
- if [ "$wanttodo" = "start" -o "$wanttodo" = "--start" -o "$wanttodo" = "_autostart" ]; then
- sleep 20 && chown root:nobody /var/run/pluto -R && chmod 770 /var/run/pluto -R && ln -f /var/run/pluto/pluto.pid /var/run/pluto.pid 2>&1 &
- fi
- exit $st
- ;;
-
- restart|--restart|force-reload)
- $0 $IPSEC_setupflags stop
- $0 $IPSEC_setupflags start
- ;;
-
- _autorestart) # for internal use only
- $0 $IPSEC_setupflags _autostop
- $0 $IPSEC_setupflags _autostart
- ;;
-
- status|--status)
- ipsec _realsetup $1
- exit
- ;;
-
- --version)
- echo "$me $IPSEC_VERSION"
- exit 0
- ;;
-
- --help)
- echo "Usage: $me [ --showonly ] {--start|--stop|--restart}"
- echo " $me --status"
- exit 0
- ;;
-
- *)
- echo "Usage: $me [ --showonly ] {--start|--stop|--restart}"
- echo " $me --status"
- exit 2
-esac
-
-exit 0
+CHECK_INTERVAL='120' # Check this often (in seconds)
+DNS_RESOLVE_TRIES='3' # Try to resolve IPs this often (each try takes max. 2 seconds)
+NICENESS='+5' # Adjust niceness of child processes: '-20' ... '+19'; '0' is default
+ipfire_VPN_CONFIG='/var/ipfire/vpn/config' # Location of ipfire's vpn configuration file
+ipfire_VPN_SETTINGS='/var/ipfire/vpn/settings' # Location of ipfire's vpn settings file
+VERSION='1.6.3'
+
+# Workaround for nonexistent "nl" command on ipfire 1.4.x
+nl --help >/dev/null 2>&1
+if test $? -ne 0; then
+ alias nl='cat'
+fi
+
+MyHost=`grep VPN_IP /var/ipfire/vpn/settings | cut --delimiter='=' --output-delimiter=' ' -f2`
+MyIP=`cat /var/ipfire/red/local-ipaddress`
+MyDynDnsIP=`ping -c 1 "$1" 2>/dev/null | head -n1 | awk '{print $3}' | tr -d '()' | tr -d ':'`
+
+case "$1" in
+ 'start' | '--start')
+ if test ! -r "$ipfire_VPN_CONFIG"; then
+ echo 'Error: cannot read ipfire VPN configuration file; exit.' >&2
+ exit 1
+ fi
+
+ mknod -m 0660 "/var/run/$(basename $0)" p >/dev/null 2>&1 # Create pipe for status-information
+
+ # Read VPN configuration and fork a child process for each VPN connection
+ #
+ while read line; do
+ VPN=($(echo $line | cut --delimiter=',' --output-delimiter=' ' -f1,2,3,5,6,12)) #
+ CONNR=${VPN[0]} # connection number
+ CONACTIVE=${VPN[1]} # active (on|off)
+ CONNAME=${VPN[2]} # connection name
+ CONTYPE=${VPN[3]} # connection type (host|net)
+ CONCERTPSK=${VPN[4]} # key type (cert|psk)
+ CONDNSNAME=${VPN[5]} # FQDN name of other side
+
+ echo -n "${CONACTIVE}" | grep -qi '^off$' && continue # Ignore: deactivated connections
+ echo -n "${CONTYPE}" | grep -qi '^host$' && continue # Ignore: Roadwarriors (->DPD)
+# echo -n "${VPN[1]}${MyHost}" | grep -q '^[[:digit:]\.]\+$' && continue # Ignore: "left" and "right" side set to an IP
+
+ $0 'conn:' "${CONNAME}" "${MyHost}" "${CONDNSNAME}" "${CONNR}" >/dev/null 2>&1 & # Fork child process (parameters: "conn: NAME LEFT RIGHT NUMBER")
+ echo -n 'S'
+ done < "$ipfire_VPN_CONFIG"
+ echo Â"ÂStarte VPN-Watch"
+ exit 0 # Parent dies here... RIP
+ ;;
+ 'stop' | '--stop')
+ # Terminate processes
+ for proc in $(pidof -x -o %PPID $(basename $0)); do
+ kill -15 $proc
+ echo -n 'T'
+ done
+ sleep 1
+ # Kill remaining processes
+ for proc in $(pidof -x -o %PPID $(basename $0)); do
+ kill -9 $proc
+ echo -n 'K'
+ done
+ rm -f "/var/run/$(basename $0)" # Remove pipe
+ echo "Stoppe VPN-Watch"
+ exit 0
+ ;;
+ 'restart' | '--restart')
+ $0 stop
+ $0 start
+ exit 0
+ ;;
+ 'status' | '--status')
+ echo "VPN-Watch ${VERSION} (mail: daniel@itechnology.de, web: www.itechnology.de/vpn-watch)"
+ if ps --no-heading axw | grep -v 'grep' | grep -q "$(basename $0) conn: "; then
+ trap '' USR1
+ killall -q -g -s USR1 -- $(basename $0)
+ sleep 1
+ cat "/var/run/$(basename $0)" | sort | nl # Read children's info from pipe
+ else
+ echo ' no instances running.'
+ fi
+ exit 0
+ ;;
+ 'conn:')
+ # Children proceed here...
+ renice ${NICENESS:-0} -p $$ >/dev/null 2>&1 # Adjust niceness
+ shift # Remove the first positional parameter ("conn:"), as we don't need it anymore
+ ;;
+ *)
+ echo "Usage: $0 { start | stop | restart | status }" >&2
+ exit 1
+ ;;
+esac
+
+# Logging, signal handlers
+#
+alias log="logger -t '$(basename $0 | cut -d '.' -f 1) ${VERSION}' \(${1}\)"
+trap 'log "terminated after ${RESTART_COUNT} restarts."' EXIT
+trap 'echo "connection \"${1}\" restarted ${RESTART_COUNT} times" >>/var/run/$(basename $0)' USR1
+
+log "started"
+
+# Get IP of a FQDN... using 'arp', 'traceroute' or 'ping',
+# because ipfire has no 'nslookup', 'host' or 'dig' command.
+#
+function get_ip () {
+ local RESULT=''
+ for ((i=1; ${i} <= ${DNS_RESOLVE_TRIES}; i++)); do
+ if which arp >/dev/null 2>&1; then
+ RESULT=$(arp "$1" 2>/dev/null | awk '{ print $2 }' | tr -d '()')
+ elif which traceroute >/dev/null 2>&1; then
+ RESULT=$(traceroute -m1 -q1 "$1" 2>/dev/null | head -n1 | awk '{ print $4 }' | tr -d '(),')
+ else
+ RESULT=$(ping -c 1 "$1" 2>/dev/null | head -n1 | awk '{print $3}' | tr -d '()' | tr -d ':')
+ fi
+ test -n "$RESULT" && break
+ done
+ test -z "$RESULT" && log "Warning: could not resolve ${1} after ${DNS_RESOLVE_TRIES} tries..."
+ echo -n "$RESULT"
+}
+
+function get_tunnelip () {
+ file=/var/tmp/$1.remoteip
+ local TRESULT=''
+ TVPN=`grep "$1" /var/ipfire/vpn/config| awk 'BEGIN{FS=","}{print $2}'`
+ DYNHOST=`grep "$1" /var/ipfire/vpn/config| awk 'BEGIN{FS=","}{print $12}'`
+ CONNR=`grep "$1" /var/ipfire/vpn/config| awk 'BEGIN{FS=","}{print $1}'`
+ REMOTEIP=`/usr/bin/ping -c 1 "$DYNHOST" 2>/dev/null | head -n1 | awk '{print $3}' | tr -d '()' | tr -d ':'`
+ if ! test -f $file; then
+ cat $REMOTEIP > $file
+ fi
+ OLDIP=`cat $file`
+ TUNIP=`ipsec whack --status | grep "$1"`
+ if [ "$TUNIP" != "" ]; then
+ TUNIP=`ipsec whack --status | grep "$1" | awk 'BEGIN{FS="["}{print $2}' | awk 'BEGIN{FS="---"}{print $3}'`
+ log "currently used tunnel IP = $TUNIP, current remote IP = $REMOTEIP"
+ echo $REMOTEIP > $file
+ TRESULT=${TUNIP}
+ fi
+
+ test -n "$TRESULT" && break
+ test -z "$TRESULT" && log "Warning: could not retrieve last used VPN tunnel IP..."
+ echo -n "$TRESULT"
+}
+
+# Restarts a VPN connection
+#
+function restart_vpn () {
+ if test -x /usr/local/bin/ipsecctrl; then
+ /usr/local/bin/ipsecctrl D "$1" # This works for ipfire 1.4.x
+ /usr/local/bin/ipsecctrl R # re-read secrets
+ /usr/local/bin/ipsecctrl S "$1" # start tunnel
+ else
+ ipsec auto --down "$1" # This works for ipfire 1.3.x
+ ipsec auto --unroute "$1"
+ ipsec auto --delete "$1"
+ ipsec auto --rereadall
+ ipsec auto --add "$1"
+ ipsec auto --route "$1"
+ ipsec auto --up "$1"
+ fi
+}
+
+# Get left and right IP
+#
+LEFT_IP_OLD=$MyIP
+RIGHT_IP_OLD=$(get_ip $3)
+
+# Infinite loop; checks, whether the IP of a left or right FQDN has changed.
+# If so, the affected connection gets restarted; this is logged to syslog.
+#
+RESTART_COUNT=0
+while :; do
+ sleep $CHECK_INTERVAL
+
+ # Skip check until IPSec is running
+ ipsec auto --status >/dev/null 2>&1 || continue
+
+ # get own IP (may have changed)
+ ThisHostIP=`cat /var/ipfire/red/local-ipaddress`
+
+ # this our own IP as reported in /var/ipfire/ppp/local-ipadress
+ LEFT_IP_NEW=$ThisHostIP
+ # check our own DYNDNS IP
+ LEFT_IP_DYN=$(get_ip $MyHost)
+ # this is DYNDNS IP of other side
+ RIGHT_IP_NEW=$(get_ip $3)
+ # this the last used (right) IP for VPN-Tunnel
+ RIGHT_TUN_IP_OLD=$(get_tunnelip $1)
+
+# for whatever reason, ipsec did not notice our own IP has changed for this connection
+ if [ "${LEFT_IP_NEW}" != "${LEFT_IP_DYN}" ]; then
+ restart_vpn "$4"
+ let RESTART_COUNT++
+ log "Red IP = $LEFT_IP_NEW, IP by DynDNS = $LEFT_IP_DYN"
+ log 'incorrect dynamic IP in tunnel used: restarting connection...'
+ fi
+
+# left or right IP has changed...
+ if test "${LEFT_IP_OLD} ${RIGHT_IP_OLD}" != "${LEFT_IP_NEW} ${RIGHT_IP_NEW}"; then
+ restart_vpn "$4"
+ let RESTART_COUNT++
+ log 'left or right IP has changed: restarting connection...'
+ fi
+
+# right IP / IP of tunnel endpoint has changed...
+ if [ "$RIGHT_TUN_IP_OLD" != "" ]; then
+ if test "${RIGHT_TUN_IP_OLD}" != "${RIGHT_IP_NEW}"; then
+ restart_vpn "$4"
+ let RESTART_COUNT++
+ log 'VPN tunnel IP has changed: restarting connection...'
+ fi
+ fi
+
+ LEFT_IP_OLD=$LEFT_IP_NEW
+ RIGHT_IP_OLD=$RIGHT_IP_NEW
+done
+
projects / people / pmueller / ipfire-2.x.git / blobdiff