504 lines
16 KiB
Bash
Executable File
504 lines
16 KiB
Bash
Executable File
#! /bin/sh
|
||
# iproute2 version, default updown script
|
||
#
|
||
# Copyright (C) 2003-2004 Nigel Meteringham
|
||
# Copyright (C) 2003-2004 Tuomo Soini
|
||
# Copyright (C) 2002-2004 Michael Richardson
|
||
# Copyright (C) 2005-2006 Andreas Steffen <andreas.steffen@strongswan.org>
|
||
#
|
||
# 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.
|
||
#
|
||
# RCSID $Id: _updown.in,v 1.2 2006/04/17 15:06:29 as Exp $
|
||
|
||
# CAUTION: Installing a new version of strongSwan will install a new
|
||
# copy of this script, wiping out any custom changes you make. If
|
||
# you need changes, make a copy of this under another name, and customize
|
||
# that, and use the (left/right)updown parameters in ipsec.conf to make
|
||
# strongSwan use yours instead of this default one.
|
||
|
||
# things that this script gets (from ipsec_pluto(8) man page)
|
||
#
|
||
# PLUTO_VERSION
|
||
# indicates what version of this interface is being
|
||
# used. This document describes version 1.1. This
|
||
# is upwardly compatible with version 1.0.
|
||
#
|
||
# PLUTO_VERB
|
||
# specifies the name of the operation to be performed
|
||
# (prepare-host, prepare-client, up-host, up-client,
|
||
# down-host, or down-client). If the address family
|
||
# for security gateway to security gateway communica
|
||
# tions is IPv6, then a suffix of -v6 is added to the
|
||
# verb.
|
||
#
|
||
# PLUTO_CONNECTION
|
||
# is the name of the connection for which we are
|
||
# routing.
|
||
#
|
||
# PLUTO_NEXT_HOP
|
||
# is the next hop to which packets bound for the peer
|
||
# must be sent.
|
||
#
|
||
# PLUTO_INTERFACE
|
||
# is the name of the ipsec interface to be used.
|
||
#
|
||
# PLUTO_REQID
|
||
# is the requid of the ESP policy
|
||
#
|
||
# PLUTO_ME
|
||
# is the IP address of our host.
|
||
#
|
||
# PLUTO_MY_ID
|
||
# is the ID of our host.
|
||
#
|
||
# PLUTO_MY_CLIENT
|
||
# is the IP address / count of our client subnet. If
|
||
# the client is just the host, this will be the
|
||
# host's own IP address / max (where max is 32 for
|
||
# IPv4 and 128 for IPv6).
|
||
#
|
||
# PLUTO_MY_CLIENT_NET
|
||
# is the IP address of our client net. If the client
|
||
# is just the host, this will be the host's own IP
|
||
# address.
|
||
#
|
||
# PLUTO_MY_CLIENT_MASK
|
||
# is the mask for our client net. If the client is
|
||
# just the host, this will be 255.255.255.255.
|
||
#
|
||
# PLUTO_MY_SOURCEIP
|
||
# if non-empty, then the source address for the route will be
|
||
# set to this IP address.
|
||
#
|
||
# PLUTO_MY_PROTOCOL
|
||
# is the IP protocol that will be transported.
|
||
#
|
||
# PLUTO_MY_PORT
|
||
# is the UDP/TCP port to which the IPsec SA is
|
||
# restricted on our side.
|
||
#
|
||
# PLUTO_PEER
|
||
# is the IP address of our peer.
|
||
#
|
||
# PLUTO_PEER_ID
|
||
# is the ID of our peer.
|
||
#
|
||
# PLUTO_PEER_CA
|
||
# is the CA which issued the cert of our peer.
|
||
#
|
||
# PLUTO_PEER_CLIENT
|
||
# is the IP address / count of the peer's client sub
|
||
# net. If the client is just the peer, this will be
|
||
# the peer's own IP address / max (where max is 32
|
||
# for IPv4 and 128 for IPv6).
|
||
#
|
||
# PLUTO_PEER_CLIENT_NET
|
||
# is the IP address of the peer's client net. If the
|
||
# client is just the peer, this will be the peer's
|
||
# own IP address.
|
||
#
|
||
# PLUTO_PEER_CLIENT_MASK
|
||
# is the mask for the peer's client net. If the
|
||
# client is just the peer, this will be
|
||
# 255.255.255.255.
|
||
#
|
||
# PLUTO_PEER_PROTOCOL
|
||
# is the IP protocol that will be transported.
|
||
#
|
||
# PLUTO_PEER_PORT
|
||
# is the UDP/TCP port to which the IPsec SA is
|
||
# restricted on the peer side.
|
||
#
|
||
|
||
# uncomment to log VPN connections
|
||
VPN_LOGGING=1
|
||
#
|
||
# tag put in front of each log entry:
|
||
TAG=vpn
|
||
#
|
||
# syslog facility and priority used:
|
||
FAC_PRIO=local0.notice
|
||
#
|
||
# to create a special vpn logging file, put the following line into
|
||
# the syslog configuration file /etc/syslog.conf:
|
||
#
|
||
# local0.notice -/var/log/vpn
|
||
#
|
||
|
||
# check interface version
|
||
case "$PLUTO_VERSION" in
|
||
1.[0|1]) # Older Pluto?!? Play it safe, script may be using new features.
|
||
echo "$0: obsolete interface version \`$PLUTO_VERSION'," >&2
|
||
echo "$0: called by obsolete Pluto?" >&2
|
||
exit 2
|
||
;;
|
||
1.*) ;;
|
||
*) echo "$0: unknown interface version \`$PLUTO_VERSION'" >&2
|
||
exit 2
|
||
;;
|
||
esac
|
||
|
||
# check parameter(s)
|
||
case "$1:$*" in
|
||
':') # no parameters
|
||
;;
|
||
iptables:iptables) # due to (left/right)firewall; for default script only
|
||
;;
|
||
custom:*) # custom parameters (see above CAUTION comment)
|
||
;;
|
||
*) echo "$0: unknown parameters \`$*'" >&2
|
||
exit 2
|
||
;;
|
||
esac
|
||
|
||
# utility functions for route manipulation
|
||
# Meddling with this stuff should not be necessary and requires great care.
|
||
uproute() {
|
||
doroute add
|
||
ip route flush cache
|
||
}
|
||
downroute() {
|
||
doroute delete
|
||
ip route flush cache
|
||
}
|
||
|
||
addsource() {
|
||
st=0
|
||
if ! ip -o route get ${PLUTO_MY_SOURCEIP%/*} | grep -q ^local
|
||
then
|
||
it="ip addr add ${PLUTO_MY_SOURCEIP%/*}/32 dev $PLUTO_INTERFACE"
|
||
oops="`eval $it 2>&1`"
|
||
st=$?
|
||
if test " $oops" = " " -a " $st" != " 0"
|
||
then
|
||
oops="silent error, exit status $st"
|
||
fi
|
||
if test " $oops" != " " -o " $st" != " 0"
|
||
then
|
||
echo "$0: addsource \`$it' failed ($oops)" >&2
|
||
fi
|
||
fi
|
||
return $st
|
||
}
|
||
|
||
doroute() {
|
||
st=0
|
||
parms="$PLUTO_PEER_CLIENT"
|
||
|
||
parms2=
|
||
if [ -n "$PLUTO_NEXT_HOP" ]
|
||
then
|
||
parms2="via $PLUTO_NEXT_HOP"
|
||
fi
|
||
parms2="$parms2 dev $PLUTO_INTERFACE"
|
||
|
||
if [ -z "$PLUTO_MY_SOURCEIP" ]
|
||
then
|
||
if [ -f /etc/sysconfig/defaultsource ]
|
||
then
|
||
. /etc/sysconfig/defaultsource
|
||
fi
|
||
|
||
if [ -f /etc/conf.d/defaultsource ]
|
||
then
|
||
. /etc/conf.d/defaultsource
|
||
fi
|
||
|
||
if [ -n "$DEFAULTSOURCE" ]
|
||
then
|
||
PLUTO_MY_SOURCEIP=$DEFAULTSOURCE
|
||
fi
|
||
fi
|
||
|
||
parms3=
|
||
if test "$1" = "add" -a -n "$PLUTO_MY_SOURCEIP"
|
||
then
|
||
addsource
|
||
parms3="$parms3 src ${PLUTO_MY_SOURCEIP%/*}"
|
||
fi
|
||
|
||
case "$PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK" in
|
||
"0.0.0.0/0.0.0.0")
|
||
# opportunistic encryption work around
|
||
# need to provide route that eclipses default, without
|
||
# replacing it.
|
||
it="ip route $1 0.0.0.0/1 $parms2 $parms3 &&
|
||
ip route $1 128.0.0.0/1 $parms2 $parms3"
|
||
;;
|
||
*) it="ip route $1 $parms $parms2 $parms3"
|
||
;;
|
||
esac
|
||
oops="`eval $it 2>&1`"
|
||
st=$?
|
||
if test " $oops" = " " -a " $st" != " 0"
|
||
then
|
||
oops="silent error, exit status $st"
|
||
fi
|
||
if test " $oops" != " " -o " $st" != " 0"
|
||
then
|
||
echo "$0: doroute \`$it' failed ($oops)" >&2
|
||
fi
|
||
return $st
|
||
}
|
||
|
||
# in the presence of KLIPS and ipsecN interfaces do not use IPSEC_POLICY
|
||
if [ `echo "$PLUTO_INTERFACE" | grep "ipsec"` ]
|
||
then
|
||
IPSEC_POLICY_IN=""
|
||
IPSEC_POLICY_OUT=""
|
||
else
|
||
IPSEC_POLICY="-m policy --pol ipsec --proto esp --reqid $PLUTO_REQID"
|
||
IPSEC_POLICY_IN="$IPSEC_POLICY --dir in"
|
||
IPSEC_POLICY_OUT="$IPSEC_POLICY --dir out"
|
||
fi
|
||
|
||
# are there port numbers?
|
||
if [ "$PLUTO_MY_PORT" != 0 ]
|
||
then
|
||
S_MY_PORT="--sport $PLUTO_MY_PORT"
|
||
D_MY_PORT="--dport $PLUTO_MY_PORT"
|
||
fi
|
||
if [ "$PLUTO_PEER_PORT" != 0 ]
|
||
then
|
||
S_PEER_PORT="--sport $PLUTO_PEER_PORT"
|
||
D_PEER_PORT="--dport $PLUTO_PEER_PORT"
|
||
fi
|
||
|
||
# the big choice
|
||
case "$PLUTO_VERB:$1" in
|
||
prepare-host:*|prepare-client:*)
|
||
# delete possibly-existing route (preliminary to adding a route)
|
||
case "$PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK" in
|
||
"0.0.0.0/0.0.0.0")
|
||
# need to provide route that eclipses default, without
|
||
# replacing it.
|
||
parms1="0.0.0.0/1"
|
||
parms2="128.0.0.0/1"
|
||
it="ip route delete $parms1 2>&1 ; ip route delete $parms2 2>&1"
|
||
oops="`ip route delete $parms1 2>&1 ; ip route delete $parms2 2>&1`"
|
||
;;
|
||
*)
|
||
parms="$PLUTO_PEER_CLIENT"
|
||
it="ip route delete $parms 2>&1"
|
||
oops="`ip route delete $parms 2>&1`"
|
||
;;
|
||
esac
|
||
status="$?"
|
||
if test " $oops" = " " -a " $status" != " 0"
|
||
then
|
||
oops="silent error, exit status $status"
|
||
fi
|
||
case "$oops" in
|
||
*'RTNETLINK answers: No such process'*)
|
||
# This is what route (currently -- not documented!) gives
|
||
# for "could not find such a route".
|
||
oops=
|
||
status=0
|
||
;;
|
||
esac
|
||
if test " $oops" != " " -o " $status" != " 0"
|
||
then
|
||
echo "$0: \`$it' failed ($oops)" >&2
|
||
fi
|
||
exit $status
|
||
;;
|
||
route-host:*|route-client:*)
|
||
# connection to me or my client subnet being routed
|
||
uproute
|
||
;;
|
||
unroute-host:*|unroute-client:*)
|
||
# connection to me or my client subnet being unrouted
|
||
downroute
|
||
;;
|
||
up-host:)
|
||
# connection to me coming up
|
||
# If you are doing a custom version, firewall commands go here.
|
||
;;
|
||
down-host:)
|
||
# connection to me going down
|
||
# If you are doing a custom version, firewall commands go here.
|
||
;;
|
||
up-client:)
|
||
# connection to my client subnet coming up
|
||
# If you are doing a custom version, firewall commands go here.
|
||
;;
|
||
down-client:)
|
||
# connection to my client subnet going down
|
||
# If you are doing a custom version, firewall commands go here.
|
||
;;
|
||
up-host:iptables)
|
||
# connection to me, with (left/right)firewall=yes, coming up
|
||
# This is used only by the default updown script, not by your custom
|
||
# ones, so do not mess with it; see CAUTION comment up at top.
|
||
iptables -I INPUT 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
|
||
-s $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $S_PEER_PORT \
|
||
-d $PLUTO_ME $D_MY_PORT $IPSEC_POLICY_IN -j ACCEPT
|
||
iptables -I OUTPUT 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
|
||
-s $PLUTO_ME $S_MY_PORT $IPSEC_POLICY_OUT \
|
||
-d $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $D_PEER_PORT -j ACCEPT
|
||
#
|
||
# log IPsec host connection setup
|
||
if [ $VPN_LOGGING ]
|
||
then
|
||
if [ "$PLUTO_PEER_CLIENT" == "$PLUTO_PEER/32" ]
|
||
then
|
||
logger -t $TAG -p $FAC_PRIO \
|
||
"+ `echo -e $PLUTO_PEER_ID` $PLUTO_PEER -- $PLUTO_ME"
|
||
else
|
||
logger -t $TAG -p $FAC_PRIO \
|
||
"+ `echo -e $PLUTO_PEER_ID` $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME"
|
||
fi
|
||
fi
|
||
;;
|
||
down-host:iptables)
|
||
# connection to me, with (left/right)firewall=yes, going down
|
||
# This is used only by the default updown script, not by your custom
|
||
# ones, so do not mess with it; see CAUTION comment up at top.
|
||
iptables -D INPUT -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
|
||
-s $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $S_PEER_PORT \
|
||
-d $PLUTO_ME $D_MY_PORT $IPSEC_POLICY_IN -j ACCEPT
|
||
iptables -D OUTPUT -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
|
||
-s $PLUTO_ME $S_MY_PORT $IPSEC_POLICY_OUT \
|
||
-d $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $D_PEER_PORT -j ACCEPT
|
||
#
|
||
# log IPsec host connection teardown
|
||
if [ $VPN_LOGGING ]
|
||
then
|
||
if [ "$PLUTO_PEER_CLIENT" == "$PLUTO_PEER/32" ]
|
||
then
|
||
logger -t $TAG -p $FAC_PRIO -- \
|
||
"- `echo -e $PLUTO_PEER_ID` $PLUTO_PEER -- $PLUTO_ME"
|
||
else
|
||
logger -t $TAG -p $FAC_PRIO -- \
|
||
"- `echo -e $PLUTO_PEER_ID` $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME"
|
||
fi
|
||
fi
|
||
;;
|
||
up-client:iptables)
|
||
# connection to client subnet, with (left/right)firewall=yes, coming up
|
||
# This is used only by the default updown script, not by your custom
|
||
# ones, so do not mess with it; see CAUTION comment up at top.
|
||
if [ "$PLUTO_PEER_CLIENT" != "$PLUTO_MY_SOURCEIP/32" ]
|
||
then
|
||
iptables -I FORWARD 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
|
||
-s $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK $S_MY_PORT \
|
||
-d $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $D_PEER_PORT \
|
||
$IPSEC_POLICY_OUT -j ACCEPT
|
||
iptables -I FORWARD 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
|
||
-s $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $S_PEER_PORT \
|
||
-d $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK $D_MY_PORT \
|
||
$IPSEC_POLICY_IN -j ACCEPT
|
||
fi
|
||
#
|
||
# a virtual IP requires an INPUT and OUTPUT rule on the host
|
||
# or sometimes host access via the internal IP is needed
|
||
if [ -n "$PLUTO_MY_SOURCEIP" -o -n "$PLUTO_HOST_ACCESS" ]
|
||
then
|
||
iptables -I INPUT 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
|
||
-s $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $S_PEER_PORT \
|
||
-d $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK $D_MY_PORT \
|
||
$IPSEC_POLICY_IN -j ACCEPT
|
||
iptables -I OUTPUT 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
|
||
-s $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK $S_MY_PORT \
|
||
-d $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $D_PEER_PORT \
|
||
$IPSEC_POLICY_OUT -j ACCEPT
|
||
fi
|
||
#
|
||
# log IPsec client connection setup
|
||
if [ $VPN_LOGGING ]
|
||
then
|
||
if [ "$PLUTO_PEER_CLIENT" == "$PLUTO_PEER/32" ]
|
||
then
|
||
logger -t $TAG -p $FAC_PRIO \
|
||
"+ `echo -e $PLUTO_PEER_ID` $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
|
||
else
|
||
logger -t $TAG -p $FAC_PRIO \
|
||
"+ `echo -e $PLUTO_PEER_ID` $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
|
||
fi
|
||
fi
|
||
;;
|
||
down-client:iptables)
|
||
# connection to client subnet, with (left/right)firewall=yes, going down
|
||
# This is used only by the default updown script, not by your custom
|
||
# ones, so do not mess with it; see CAUTION comment up at top.
|
||
if [ "$PLUTO_PEER_CLIENT" != "$PLUTO_MY_SOURCEIP/32" ]
|
||
then
|
||
iptables -D FORWARD -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
|
||
-s $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK $S_MY_PORT \
|
||
-d $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $D_PEER_PORT \
|
||
$IPSEC_POLICY_OUT -j ACCEPT
|
||
iptables -D FORWARD -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
|
||
-s $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $S_PEER_PORT \
|
||
-d $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK $D_MY_PORT \
|
||
$IPSEC_POLICY_IN -j ACCEPT
|
||
fi
|
||
#
|
||
# a virtual IP requires an INPUT and OUTPUT rule on the host
|
||
# or sometimes host access via the internal IP is needed
|
||
if [ -n "$PLUTO_MY_SOURCEIP" -o -n "$PLUTO_HOST_ACCESS" ]
|
||
then
|
||
iptables -D INPUT -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
|
||
-s $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $S_PEER_PORT \
|
||
-d $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK $D_MY_PORT \
|
||
$IPSEC_POLICY_IN -j ACCEPT
|
||
iptables -D OUTPUT -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
|
||
-s $PLUTO_MY_CLIENT_NET/$PLUTO_MY_CLIENT_MASK $S_MY_PORT \
|
||
-d $PLUTO_PEER_CLIENT_NET/$PLUTO_PEER_CLIENT_MASK $D_PEER_PORT \
|
||
$IPSEC_POLICY_OUT -j ACCEPT
|
||
fi
|
||
#
|
||
# log IPsec client connection teardown
|
||
if [ $VPN_LOGGING ]
|
||
then
|
||
if [ "$PLUTO_PEER_CLIENT" == "$PLUTO_PEER/32" ]
|
||
then
|
||
logger -t $TAG -p $FAC_PRIO -- \
|
||
"- `echo -e $PLUTO_PEER_ID` $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
|
||
else
|
||
logger -t $TAG -p $FAC_PRIO -- \
|
||
"- `echo -e $PLUTO_PEER_ID` $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
|
||
fi
|
||
fi
|
||
;;
|
||
#
|
||
# IPv6
|
||
#
|
||
prepare-host-v6:*|prepare-client-v6:*)
|
||
;;
|
||
route-host-v6:*|route-client-v6:*)
|
||
# connection to me or my client subnet being routed
|
||
#uproute_v6
|
||
;;
|
||
unroute-host-v6:*|unroute-client-v6:*)
|
||
# connection to me or my client subnet being unrouted
|
||
#downroute_v6
|
||
;;
|
||
up-host-v6:*)
|
||
# connection to me coming up
|
||
# If you are doing a custom version, firewall commands go here.
|
||
;;
|
||
down-host-v6:*)
|
||
# connection to me going down
|
||
# If you are doing a custom version, firewall commands go here.
|
||
;;
|
||
up-client-v6:)
|
||
# connection to my client subnet coming up
|
||
# If you are doing a custom version, firewall commands go here.
|
||
;;
|
||
down-client-v6:)
|
||
# connection to my client subnet going down
|
||
# If you are doing a custom version, firewall commands go here.
|
||
;;
|
||
*) echo "$0: unknown verb \`$PLUTO_VERB' or parameter \`$1'" >&2
|
||
exit 1
|
||
;;
|
||
esac
|