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#! /bin/sh
# iproute2 version, default updown script
#
# Copyright (C) 2003-2004 Nigel Metheringham
# Copyright (C) 2002-2004 Michael Richardson <mcr@xelerance.com>
# Copyright (C) 2003-2005 Tuomo Soini <tis@foobar.fi>
#
# 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 <https://www.gnu.org/licenses/gpl2.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.
#
# CAUTION: Installing a new version of FreeS/WAN 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
# FreeS/WAN use yours instead of this default one.
test $IPSEC_INIT_SCRIPT_DEBUG && set -v -x
# standardize PATH, and export it for everything else's benefit;
# should config.mk generate this?
NSS_BINDIR="${NSS_BINDIR:-@@NSS_BINDIR@@}"
IPSEC_SBINDIR="${IPSEC_SBINDIR:-@@SBINDIR@@}"
PATH="${NSS_BINDIR}:${PATH#${NSS_BINDIR}:}"
PATH="${IPSEC_SBINDIR}:${PATH#${IPSEC_SBINDIR}:}"
export PATH
LC_ALL=C export LC_ALL
# things that this script gets (from ipsec_pluto(8) man page)
#
#
# 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_CONNECTION_TYPE
# is type of the connection, "tunnel" or "transport".
#
# PLUTO_CONN_POLICY
# the policy of the connection, as in:
# RSASIG+ENCRYPT+TUNNEL+PFS+DONTREKEY+OPPORTUNISTIC+failureDROP+lKOD+rKOD
#
# PLUTO_NEXT_HOP
# is the next hop to which packets bound for the peer
# must be sent.
#
# PLUTO_INTERFACE
# is the name of the real interface used by encrypted traffic and IKE traffic
#
# PLUTO_ME
# is the IP address 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 / mask (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 protocol for this connection. Useful for
# firewalling.
#
# PLUTO_MY_PORT
# is the port. Useful for firewalling.
#
# PLUTO_PEER
# is the IP address 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 / mask (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 protocol set for remote end with port
# selector.
#
# PLUTO_PEER_PORT
# is the peer's port. Useful for firewalling.
#
# PLUTO_SA_REQID
# When using KAME or XFRM/NETKEY, the IPsec SA reqid value
#
# PLUTO_VIRT_INTERFACE
# is the name of ipsec interface used by clear traffic in/out
# check parameter(s)
case "$1:$*" in
':') # no parameters
;;
ipfwadm:ipfwadm) # 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
}
downroute() {
doroute delete
}
uprule() {
# virtual sourceip support
if [ -n "$PLUTO_MY_SOURCEIP" ]
then
addsource
changesource
fi
}
downrule() {
if [ -n "$PLUTO_MY_SOURCEIP" ]
then
dorule delete
fi
}
addsource() {
st=0
## add an alias to the loopback interface if not already there
snet=${PLUTO_MY_SOURCEIP}/32
st=1
return $st
}
changesource() {
st=0
st=1
return $st
}
dorule() {
st=0
return $st
}
doroute() {
st=0
return $st
}
# the big choice
case "$PLUTO_VERB:$1" in
prepare-host:*|prepare-client:*)
# delete possibly-existing route (preliminary to adding a route)
exit 0
;;
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
uprule
# If you are doing a custom version, firewall commands go here.
;;
down-host:*)
# connection to me going down
downrule
# If you are doing a custom version, firewall commands go here.
;;
up-client:)
# connection to my client subnet coming up
uprule
# If you are doing a custom version, firewall commands go here.
;;
down-client:)
# connection to my client subnet going down
downrule
# If you are doing a custom version, firewall commands go here.
;;
up-client:ipfwadm)
# connection to client subnet, with (left/right)firewall=yes, coming up
uprule
;;
down-client:ipfwadm)
# connection to client subnet, with (left/right)firewall=yes, going down
downrule
;;
#
# 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
|
