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6c26104282
All (almost) files belonging to the systemvm aer now centralize in the systemvm directory. The code for the separate functions is still in the services directory. This will make the code easier to understand and makes it clear that the systemvm is a separate item. It alos means that it can be excluded from the build entirely by not adding the systemvm profile, this will speed up the compiles somewhat.
125 lines
3.2 KiB
Bash
Executable File
125 lines
3.2 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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# @VERSION@
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source /root/func.sh
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source /opt/cloud/bin/vpc_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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usage() {
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printf "Usage: %s: (-A|-D) -r <target-instance-ip> -l <public ip address> -d < eth device> \n" $(basename $0) >&2
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}
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#set -x
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vpnoutmark="0x525"
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static_nat() {
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local op=$1
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local publicIp=$2
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local instIp=$3
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local op2="-D"
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local tableNo=${ethDev:3}
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logger -t cloud "$(basename $0): static nat: public ip=$publicIp \
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instance ip=$instIp op=$op"
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#if adding, this might be a duplicate, so delete the old one first
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[ "$op" == "-A" ] && static_nat "-D" $publicIp $instIp
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# the delete operation may have errored out but the only possible reason is
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# that the rules didn't exist in the first place
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[ "$op" == "-A" ] && op2="-I"
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if [ "$op" == "-A" ]
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then
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# put static nat rule one rule after VPN no-NAT rule
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# rule chain can be used to improve it later
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iptables-save -t nat|grep "POSTROUTING" | grep $vpnoutmark > /dev/null
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if [ $? -eq 0 ]
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then
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rulenum=2
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else
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rulenum=1
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fi
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fi
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# shortcircuit the process if error and it is an append operation
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# continue if it is delete
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(sudo iptables -t nat $op PREROUTING -d $publicIp -j DNAT \
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--to-destination $instIp &>> $OUTFILE || [ "$op" == "-D" ]) &&
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# add mark to force the package go out through the eth the public IP is on
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#(sudo iptables -t mangle $op PREROUTING -s $instIp -j MARK \
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# --set-mark $tableNo &> $OUTFILE || [ "$op" == "-D" ]) &&
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(sudo iptables -t nat $op2 POSTROUTING $rulenum -o $ethDev -s $instIp -j SNAT \
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--to-source $publicIp &>> $OUTFILE )
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result=$?
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logger -t cloud "$(basename $0): done static nat entry public ip=$publicIp op=$op result=$result"
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if [ "$op" == "-D" ]
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then
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return 0
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fi
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return $result
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}
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rflag=
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lflag=
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dflag=
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op=""
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while getopts 'ADr:l:' OPTION
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do
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case $OPTION in
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A) op="-A"
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;;
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D) op="-D"
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;;
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r) rflag=1
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instanceIp="$OPTARG"
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;;
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l) lflag=1
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publicIp="$OPTARG"
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;;
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?) usage
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unlock_exit 2 $lock $locked
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;;
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esac
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done
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ethDev=$(getEthByIp $publicIp)
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result=$?
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if [ $result -gt 0 ]
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then
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if [ "$op" == "-D" ]
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then
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removeRulesForIp $publicIp
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unlock_exit 0 $lock $locked
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else
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unlock_exit $result $lock $locked
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fi
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fi
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OUTFILE=$(mktemp)
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static_nat $op $publicIp $instanceIp
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result=$?
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unlock_exit $result $lock $locked
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