-#!/bin/bash
+#!/bin/sh
# SPDX-License-Identifier: Apache-2.0
# Copyright (c) 2021 Intel Corporation
-# set charon.install_virtual_ip = no to prevent the daemon from also installing the VIP
+DEFAULT_PREFIX="localto"
+DEFAULT_K8S_SVC="10.96.0.1:443"
+DEFAULT_K8S_PORT="6443"
-set -o nounset
-set -o errexit
+/sbin/hotplug-call ipsec "$1"
-NET_IF=`ip a | grep ${PLUTO_ME} | grep inet | cut -d' ' -f 11`
-VTI_IF="vti_${NET_IF}"
+# 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_INTERFACE
+# is the name of the ipsec interface to be used.
+#
+# PLUTO_REQID
+# is the requid of the AH|ESP policy
+#
+# PLUTO_PROTO
+# is the negotiated IPsec protocol, ah|esp
+#
+# PLUTO_IPCOMP
+# is not empty if IPComp was negotiated
+#
+# PLUTO_UNIQUEID
+# is the unique identifier of the associated IKE_SA
+#
+# 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_SOURCEIP
+# PLUTO_MY_SOURCEIP4_$i
+# PLUTO_MY_SOURCEIP6_$i
+# contains IPv4/IPv6 virtual IP received from a responder,
+# $i enumerates from 1 to the number of IP per address family.
+# PLUTO_MY_SOURCEIP is a legacy variable and equal to the first
+# virtual IP, IPv4 or IPv6.
+#
+# PLUTO_MY_PROTOCOL
+# is the IP protocol that will be transported.
+#
+# PLUTO_MY_PORT
+# is the UDP/TCP port to which the IPsec SA is
+# restricted on our side. For ICMP/ICMPv6 this contains the
+# message type, and PLUTO_PEER_PORT the message code.
+#
+# PLUTO_PEER
+# is the IP address of our peer.
+#
+# PLUTO_PEER_ID
+# is the ID of our peer.
+#
+# PLUTO_PEER_CLIENT
+# is the IP address / count of the peer's client sub-
+# net. If the client is just the peer, this will be
+# the peer's own IP address / max (where max is 32
+# for IPv4 and 128 for IPv6).
+#
+# PLUTO_PEER_SOURCEIP
+# PLUTO_PEER_SOURCEIP4_$i
+# PLUTO_PEER_SOURCEIP6_$i
+# contains IPv4/IPv6 virtual IP sent to an initiator,
+# $i enumerates from 1 to the number of IP per address family.
+# PLUTO_PEER_SOURCEIP is a legacy variable and equal to the first
+# virtual IP, IPv4 or IPv6.
+#
+# PLUTO_PEER_PROTOCOL
+# is the IP protocol that will be transported.
+#
+# PLUTO_PEER_PORT
+# is the UDP/TCP port to which the IPsec SA is
+# restricted on the peer side. For ICMP/ICMPv6 this contains the
+# message code, and PLUTO_MY_PORT the message type.
+#
+# PLUTO_XAUTH_ID
+# is an optional user ID employed by the XAUTH protocol
+#
+# PLUTO_MARK_IN
+# is an optional XFRM mark set on the inbound IPsec SA
+#
+# PLUTO_MARK_OUT
+# is an optional XFRM mark set on the outbound IPsec SA
+#
+# PLUTO_IF_ID_IN
+# is an optional XFRM interface ID set on the inbound IPsec SA
+#
+# PLUTO_IF_ID_OUT
+# is an optional XFRM interface ID set on the outbound IPsec SA
+#
+# PLUTO_UDP_ENC
+# contains the remote UDP port in the case of ESP_IN_UDP
+# encapsulation
+#
+# PLUTO_DNS4_$i
+# PLUTO_DNS6_$i
+# contains IPv4/IPv6 DNS server attribute received from a
+# responder, $i enumerates from 1 to the number of servers per
+# address family.
+#
-case "${PLUTO_VERB}" in
- up-client)
- #ip tunnel add "${VTI_IF}" local "${PLUTO_ME}" remote "${PLUTO_PEER}" mode vti \
- ip tunnel add "${VTI_IF}" local "${PLUTO_ME}" remote 0.0.0.0 mode vti \
- key "${PLUTO_MARK_OUT%%/*}"
- ip link set "${VTI_IF}" up
- ip addr add "${PLUTO_MY_SOURCEIP}" dev "${VTI_IF}"
- ip rule add to "${PLUTO_MY_SOURCEIP}" table 40
- ip rule add from "${PLUTO_MY_SOURCEIP}" table 40
- ip route add "${PLUTO_PEER}" dev "${VTI_IF}" src "${PLUTO_MY_SOURCEIP}" table 40
- sysctl -w "net.ipv4.conf.${VTI_IF}.disable_policy=1"
+# define a minimum PATH environment in case it is not set
+PATH="/sbin:/bin:/usr/sbin:/usr/bin:/usr/sbin"
+export PATH
+
+# comment to disable logging VPN connections to syslog
+VPN_LOGGING=1
+#
+# tag put in front of each log entry:
+TAG=vpn
+#
+# syslog facility and priority used:
+FAC_PRIO=local0.notice
+#
+# to create a special vpn logging file, put the following line into
+# the syslog configuration file /etc/syslog.conf:
+#
+# local0.notice -/var/log/vpn
+
+# check interface version
+case "$PLUTO_VERSION" in
+1.[0|1]) # Older release?!? Play it safe, script may be using new features.
+ echo "$0: obsolete interface version \`$PLUTO_VERSION'," >&2
+ echo "$0: called by obsolete release?" >&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
+
+IPSEC_POLICY="-m policy --pol ipsec --proto $PLUTO_PROTO --reqid $PLUTO_REQID"
+IPSEC_POLICY_IN="$IPSEC_POLICY --dir in"
+IPSEC_POLICY_OUT="$IPSEC_POLICY --dir out"
+
+# use protocol specific options to set ports
+case "$PLUTO_MY_PROTOCOL" in
+1) # ICMP
+ ICMP_TYPE_OPTION="--icmp-type"
;;
- down-client)
- ip rule del from all to "${PLUTO_MY_SOURCEIP}"
- ip rule del from "${PLUTO_MY_SOURCEIP}"
- ip tunnel del "${VTI_IF}"
+58) # ICMPv6
+ ICMP_TYPE_OPTION="--icmpv6-type"
+ ;;
+*)
;;
esac
+
+# are there port numbers?
+if [ "$PLUTO_MY_PORT" != 0 ]
+then
+ if [ -n "$ICMP_TYPE_OPTION" ]
+ then
+ S_MY_PORT="$ICMP_TYPE_OPTION $PLUTO_MY_PORT"
+ D_MY_PORT="$ICMP_TYPE_OPTION $PLUTO_MY_PORT"
+ else
+ S_MY_PORT="--sport $PLUTO_MY_PORT"
+ D_MY_PORT="--dport $PLUTO_MY_PORT"
+ fi
+fi
+if [ "$PLUTO_PEER_PORT" != 0 ]
+then
+ if [ -n "$ICMP_TYPE_OPTION" ]
+ then
+ # the syntax is --icmp[v6]-type type[/code], so add it to the existing option
+ S_MY_PORT="$S_MY_PORT/$PLUTO_PEER_PORT"
+ D_MY_PORT="$D_MY_PORT/$PLUTO_PEER_PORT"
+ else
+ S_PEER_PORT="--sport $PLUTO_PEER_PORT"
+ D_PEER_PORT="--dport $PLUTO_PEER_PORT"
+ fi
+fi
+
+case "$PLUTO_VERB:$1" in
+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 $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 $D_PEER_PORT -j ACCEPT
+ #
+ # allow IPIP traffic because of the implicit SA created by the kernel if
+ # IPComp is used (for small inbound packets that are not compressed)
+ if [ -n "$PLUTO_IPCOMP" ]
+ then
+ iptables -I INPUT 1 -i $PLUTO_INTERFACE -p 4 \
+ -s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
+ fi
+ #
+ # log IPsec host connection setup
+ if [ $VPN_LOGGING ]
+ then
+ if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/32" ]
+ then
+ logger -t $TAG -p $FAC_PRIO \
+ "+ $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME"
+ else
+ logger -t $TAG -p $FAC_PRIO \
+ "+ $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 $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 $D_PEER_PORT -j ACCEPT
+ #
+ # IPIP exception teardown
+ if [ -n "$PLUTO_IPCOMP" ]
+ then
+ iptables -D INPUT -i $PLUTO_INTERFACE -p 4 \
+ -s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
+ fi
+ #
+ # log IPsec host connection teardown
+ if [ $VPN_LOGGING ]
+ then
+ if [ "$PLUTO_PEER_CLIENT" = "$PLUTO_PEER/32" ]
+ then
+ logger -t $TAG -p $FAC_PRIO -- \
+ "- $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME"
+ else
+ logger -t $TAG -p $FAC_PRIO -- \
+ "- $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_CONNECTION#*$DEFAULT_PREFIX}" != "$PLUTO_CONNECTION" ]
+ then
+ iptables -t nat -A PREROUTING -p tcp -m tcp -d $PLUTO_MY_SOURCEIP \
+ --dport $DEFAULT_K8S_PORT -j DNAT --to-dest $DEFAULT_K8S_SVC
+ fi
+ if [ "$PLUTO_PEER_CLIENT" != "$PLUTO_MY_SOURCEIP/32" ]
+ then
+ iptables -I FORWARD 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
+ -s $PLUTO_MY_CLIENT $S_MY_PORT \
+ -d $PLUTO_PEER_CLIENT $D_PEER_PORT $IPSEC_POLICY_OUT -j ACCEPT
+ iptables -I FORWARD 1 -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
+ -s $PLUTO_PEER_CLIENT $S_PEER_PORT \
+ -d $PLUTO_MY_CLIENT $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 $S_PEER_PORT \
+ -d $PLUTO_MY_CLIENT $D_MY_PORT $IPSEC_POLICY_IN -j ACCEPT
+ iptables -I OUTPUT 1 -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
+ -s $PLUTO_MY_CLIENT $S_MY_PORT \
+ -d $PLUTO_PEER_CLIENT $D_PEER_PORT $IPSEC_POLICY_OUT -j ACCEPT
+ fi
+ #
+ # allow IPIP traffic because of the implicit SA created by the kernel if # IPComp is used (for small inbound packets that are not compressed).
+ # INPUT is correct here even for forwarded traffic.
+ if [ -n "$PLUTO_IPCOMP" ]
+ then
+ iptables -I INPUT 1 -i $PLUTO_INTERFACE -p 4 \
+ -s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -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 \
+ "+ $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
+ else
+ logger -t $TAG -p $FAC_PRIO \
+ "+ $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
+ fi
+ fi
+ ip r add $PLUTO_MY_SOURCEIP dev $PLUTO_INTERFACE
+ ip r add $PLUTO_PEER dev $PLUTO_INTERFACE table 40
+ bash /etc/cnfroute check "${PLUTO_INTERFACE}"
+ ;;
+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 [ "${PLUTO_CONNECTION#*$DEFAULT_PREFIX}" != "$PLUTO_CONNECTION" ]
+ then
+ iptables -t nat -D PREROUTING -p tcp -m tcp -d $PLUTO_MY_SOURCEIP \
+ --dport $DEFAULT_K8S_PORT -j DNAT --to-dest $DEFAULT_K8S_SVC fi
+
+ if [ "$PLUTO_PEER_CLIENT" != "$PLUTO_MY_SOURCEIP/32" ]
+ then
+ iptables -D FORWARD -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
+ -s $PLUTO_MY_CLIENT $S_MY_PORT \
+ -d $PLUTO_PEER_CLIENT $D_PEER_PORT \
+ $IPSEC_POLICY_OUT -j ACCEPT
+ iptables -D FORWARD -i $PLUTO_INTERFACE -p $PLUTO_MY_PROTOCOL \
+ -s $PLUTO_PEER_CLIENT $S_PEER_PORT \
+ -d $PLUTO_MY_CLIENT $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 $S_PEER_PORT \
+ -d $PLUTO_MY_CLIENT $D_MY_PORT \
+ $IPSEC_POLICY_IN -j ACCEPT
+ iptables -D OUTPUT -o $PLUTO_INTERFACE -p $PLUTO_PEER_PROTOCOL \
+ -s $PLUTO_MY_CLIENT $S_MY_PORT \
+ -d $PLUTO_PEER_CLIENT $D_PEER_PORT \
+ $IPSEC_POLICY_OUT -j ACCEPT
+ fi
+ #
+ # IPIP exception teardown
+ if [ -n "$PLUTO_IPCOMP" ]
+ then iptables -D INPUT -i $PLUTO_INTERFACE -p 4 \
+ -s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -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 -- \
+ "- $PLUTO_PEER_ID $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
+ else
+ logger -t $TAG -p $FAC_PRIO -- \
+ "- $PLUTO_PEER_ID $PLUTO_PEER_CLIENT == $PLUTO_PEER -- $PLUTO_ME == $PLUTO_MY_CLIENT"
+ fi
+ fi
+ ;;
+
Code Review / icn / sdwan.git / commitdiff