mirror of
https://github.com/apache/cloudstack.git
synced 2025-11-03 04:12:31 +01:00
3205cd42b5
Now VPN connection can be created as "passive", which would enable the ability of remote peer initiate the connection. So it's possible for VPC VR to establish the connection to another VPC VR of CloudStack. Test case also included. The test case would create 2 vpcs and using VPN to connect them.
308 lines
8.4 KiB
Bash
Executable File
308 lines
8.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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source /root/func.sh
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lock="biglock"
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locked=$(getLockFile $lock)
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if [ "$locked" != "1" ]
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then
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exit 1
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fi
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vpnconfdir="/etc/ipsec.d"
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vpnoutmark="0x525"
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vpninmark="0x524"
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usage() {
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printf "Usage: %s: (-A|-D) -l <left-side vpn peer> -n <left-side guest cidr> -g <left-side gateway> -r <right-side vpn peer> -N <right-side private subnets> -e <esp policy> -i <ike policy> -t <ike lifetime> -T <esp lifetime> -s <pre-shared secret> -d <dpd 0 or 1> [ -p <passive or not> ]\n" $(basename $0) >&2
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}
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#set -x
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start_ipsec() {
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service ipsec status > /dev/null
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if [ $? -ne 0 ]
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then
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service ipsec start > /dev/null
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#Wait until ipsec started, 5 seconds at most
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for i in {1..5}
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do
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logger -t cloud "$(basename $0): waiting ipsec start..."
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service ipsec status > /dev/null
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result=$?
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if [ $result -eq 0 ]
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then
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break
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fi
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sleep 1
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done
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fi
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service ipsec status > /dev/null
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return $?
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}
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enable_iptables_subnets() {
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for net in $rightnets
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do
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sudo iptables -I FORWARD -t mangle -s $leftnet -d $net -j MARK --set-mark $vpnoutmark
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sudo iptables -A OUTPUT -t mangle -s $leftnet -d $net -j MARK --set-mark $vpnoutmark
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sudo iptables -I FORWARD -t mangle -s $net -d $leftnet -j MARK --set-mark $vpninmark
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sudo iptables -A INPUT -t mangle -s $net -d $leftnet -j MARK --set-mark $vpninmark
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done
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return 0
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}
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check_and_enable_iptables() {
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sudo iptables-save | grep "A INPUT -i $outIf -p udp -m udp --dport 500 -j ACCEPT"
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if [ $? -ne 0 ]
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then
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sudo iptables -A INPUT -i $outIf -p udp -m udp --dport 500 -j ACCEPT
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sudo iptables -A INPUT -i $outIf -p udp -m udp --dport 4500 -j ACCEPT
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sudo iptables -A INPUT -i $outIf -p 50 -j ACCEPT
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# Prevent NAT on "marked" VPN traffic, so need to be the first one on POSTROUTING chain
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sudo iptables -t nat -I POSTROUTING -t nat -o $outIf -m mark --mark $vpnoutmark -j ACCEPT
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fi
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return 0
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}
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disable_iptables_subnets() {
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for net in $rightnets
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do
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sudo iptables -D FORWARD -t mangle -s $leftnet -d $net -j MARK --set-mark $vpnoutmark
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sudo iptables -D OUTPUT -t mangle -s $leftnet -d $net -j MARK --set-mark $vpnoutmark
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sudo iptables -D FORWARD -t mangle -s $net -d $leftnet -j MARK --set-mark $vpninmark
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sudo iptables -D INPUT -t mangle -s $net -d $leftnet -j MARK --set-mark $vpninmark
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done
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return 0
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}
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check_and_disable_iptables() {
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find $vpnconfdir -name "ipsec.vpn*.conf" | grep ipsec
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if [ $? -ne 0 ]
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then
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#Nobody else use s2s vpn now, so delete the iptables rules
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sudo iptables -D INPUT -i $outIf -p udp -m udp --dport 500 -j ACCEPT
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sudo iptables -D INPUT -i $outIf -p udp -m udp --dport 4500 -j ACCEPT
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sudo iptables -D INPUT -i $outIf -p 50 -j ACCEPT
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sudo iptables -t nat -D POSTROUTING -t nat -o $outIf -m mark --mark $vpnoutmark -j ACCEPT
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fi
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return 0
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}
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ipsec_tunnel_del() {
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disable_iptables_subnets
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sudo ipsec auto --down vpn-$rightpeer
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sudo ipsec auto --delete vpn-$rightpeer
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outIp=$leftpeer
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local vpnconffile=$vpnconfdir/ipsec.vpn-$rightpeer.conf
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local vpnsecretsfile=$vpnconfdir/ipsec.vpn-$rightpeer.secrets
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logger -t cloud "$(basename $0): removing configuration for ipsec tunnel to $rightpeer"
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sudo rm -f $vpnconffile
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sudo rm -f $vpnsecretsfile
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sudo ipsec auto --rereadall
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check_and_disable_iptables
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return 0
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}
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ipsec_tunnel_add() {
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#need to unify with remote access VPN
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start_ipsec
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if [ $? -ne 0 ]
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then
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logger -t cloud "$(basename $0): Failed to start ipsec service!"
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return 1
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fi
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outIp=$leftpeer
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sudo mkdir -p $vpnconfdir
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local vpnconffile=$vpnconfdir/ipsec.vpn-$rightpeer.conf
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local vpnsecretsfile=$vpnconfdir/ipsec.vpn-$rightpeer.secrets
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logger -t cloud "$(basename $0): creating configuration for ipsec tunnel: left peer=$leftpeer \
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left net=$leftnet left gateway=$leftgw right peer=$rightpeer right network=$rightnets phase1 policy=$ikepolicy \
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phase2 policy=$esppolicy secret=$secret"
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[ "$op" == "-A" ] && ipsec_tunnel_del
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check_and_enable_iptables
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sudo echo "conn vpn-$rightpeer" > $vpnconffile &&
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sudo echo " left=$leftpeer" >> $vpnconffile &&
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sudo echo " leftsubnet=$leftnet" >> $vpnconffile &&
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sudo echo " leftnexthop=$leftgw" >> $vpnconffile &&
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sudo echo " right=$rightpeer" >> $vpnconffile &&
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sudo echo " rightsubnets={$rightnets}" >> $vpnconffile &&
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sudo echo " type=tunnel" >> $vpnconffile &&
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sudo echo " authby=secret" >> $vpnconffile &&
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sudo echo " keyexchange=ike" >> $vpnconffile &&
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sudo echo " ike=$ikepolicy" >> $vpnconffile &&
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sudo echo " ikelifetime=${ikelifetime}s" >> $vpnconffile &&
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sudo echo " esp=$esppolicy" >> $vpnconffile &&
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sudo echo " salifetime=${esplifetime}s" >> $vpnconffile &&
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sudo echo " pfs=$pfs" >> $vpnconffile &&
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sudo echo " keyingtries=2" >> $vpnconffile &&
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sudo echo " auto=add" >> $vpnconffile &&
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sudo echo "$leftpeer $rightpeer: PSK \"$secret\"" > $vpnsecretsfile &&
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sudo chmod 0400 $vpnsecretsfile
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if [ $dpd -ne 0 ]
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then
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sudo echo " dpddelay=30" >> $vpnconffile &&
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sudo echo " dpdtimeout=120" >> $vpnconffile &&
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sudo echo " dpdaction=restart" >> $vpnconffile
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fi
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enable_iptables_subnets
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sudo ipsec auto --rereadall
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sudo ipsec auto --add vpn-$rightpeer
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logger -t cloud "$(basename $0): done ipsec tunnel entry for right peer=$rightpeer right networks=$rightnets"
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result=0
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if [ $passive -eq 0 ]
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then
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sudo ipsec auto --up vpn-$rightpeer
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#5 seconds for checking if it's ready
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for i in {1..5}
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do
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logger -t cloud "$(basename $0): checking connection status..."
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/opt/cloud/bin/checks2svpn.sh $rightpeer
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result=$?
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if [ $result -eq 0 ]
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then
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break
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fi
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sleep 1
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done
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if [ $result -eq 0 ]
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then
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logger -t cloud "$(basename $0): connect to remote successful"
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else
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logger -t cloud "$(basename $0): fail to connect to remote, status code: $result"
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logger -t cloud "$(basename $0): would stop site-to-site VPN connection"
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ipsec_tunnel_del
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fi
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fi
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return $result
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}
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rflag=
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pflag=
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eflag=
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Eflag=
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lflag=
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iflag=
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Iflag=
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sflag=
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passive=0
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op=""
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while getopts 'ADpl:n:g:r:N:e:i:t:T:s:d:' OPTION
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do
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case $OPTION in
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A) opflag=1
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op="-A"
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;;
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D) opflag=2
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op="-D"
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;;
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l) lflag=1
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leftpeer="$OPTARG"
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;;
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n) nflag=1
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leftnet="$OPTARG"
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;;
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g) gflag=1
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leftgw="$OPTARG"
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;;
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r) rflag=1
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rightpeer="$OPTARG"
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;;
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N) Nflag=1
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rightnets="$OPTARG"
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;;
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e) eflag=1
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esppolicy="$OPTARG"
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;;
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i) iflag=1
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ikepolicy="$OPTARG"
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;;
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t) tflag=1
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ikelifetime="$OPTARG"
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;;
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T) Tflag=1
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esplifetime="$OPTARG"
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;;
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s) sflag=1
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secret="$OPTARG"
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;;
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d) dflag=1
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dpd="$OPTARG"
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;;
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p) passive=1
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;;
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?) usage
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unlock_exit 2 $lock $locked
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;;
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esac
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done
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logger -t cloud "$(basename $0): parameters $*"
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# get interface for public ip
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ip link|grep BROADCAST|grep -v eth0|cut -d ":" -f 2 > /tmp/iflist
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while read i
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do
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ip addr show $i|grep "$leftpeer"
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if [ $? -eq 0 ]
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then
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outIf=$i
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break
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fi
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done < /tmp/iflist
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rightnets=${rightnets//,/ }
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pfs="no"
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echo "$esppolicy" | grep "modp" > /dev/null
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if [ $? -eq 0 ]
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then
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pfs="yes"
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fi
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ret=0
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#Firewall ports for one-to-one/static NAT
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if [ "$opflag" == "1" ]
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then
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ipsec_tunnel_add
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ret=$?
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elif [ "$opflag" == "2" ]
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then
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ipsec_tunnel_del
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ret=$?
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else
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printf "Invalid action specified, must choose -A or -D to add/del tunnels\n" >&2
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unlock_exit 5 $lock $locked
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fi
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unlock_exit $ret $lock $locked
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