121 lines
2.2 KiB
Bash
Executable File
121 lines
2.2 KiB
Bash
Executable File
#!/bin/bash
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scriptName=$(basename $0)
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version=0.1
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idx=0
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killFlag=0
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localServiceIp="192.168.105.100"
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remoteIp="172.26.123.156"
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endpoint="192.168.105.100"
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user="$USER"
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cacheFile=.tunLast
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privateKeyLoc="~/.ssh/id_ed25519"
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override=0
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debug=0
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local="R"
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fromPort=0
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toPort=0
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function killTunnel {
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if [[ debug -eq 1 ]]; then
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printf "killTunnel %d\n" $toPort
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fi
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pkill -f "ssh -i ${privateKeyLoc} -fN${local} $toPort:"
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}
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function openTunnel {
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ssh -i ${privateKeyLoc} -fN${local} $toPort:${endpoint}:$fromPort ${user}@${remoteIp}
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}
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function parsePort {
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local delimiter=":"
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str=$1
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fromPort=${str%%${delimiter}*}
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toPort=${str#*${delimiter}}
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if [[ ${#toPort} -eq 0 ]]; then
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toPort=$fromPort
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fi
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}
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function usage {
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echo "
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Usage: $scriptName [OPTIONS]
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Options:
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-k | --kill Try to kill defined tunnels, if missing will try to create them
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-p | --port FROM:TO Define new port forwarding rule, if in format FROM:TO - will create
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tunnel from port FROM on defined endpoint to port TO on local
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-u | --user USERNAME Define the user name on behalf of who will try to connect to remote target
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"
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}
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function about {
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echo "
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${scriptName} ver.${version}
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Setup with next settings:
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started up under user: ${user}
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endpoint: ${endpoint}
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cacheFile: ${cacheFile}
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"
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}
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while [[ "$1" =~ ^- && ! "$1" == "--" ]]; do case $1 in
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-a | --about )
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about
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exit
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;;
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-u | --user )
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shift;
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user=$1
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;;
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-l | --local )
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local="L"
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remoteIp="localhost"
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;;
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-k | --kill )
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killFlag=1
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;;
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-p | --port )
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shift;
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port[$idx]=$1
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idx=$(($idx+1))
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override=1
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;;
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-d | --debug )
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debug=1
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;;
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-h | --help )
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usage
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exit
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;;
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esac; shift; done
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if [[ "$1" == '--' ]]; then shift; fi
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if [[ ${debug} -eq 1 ]]; then
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about
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fi
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if [[ ${#port[@]} -gt 0 ]]; then
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printf "PORT TO OPEN: %s\n" ${port[@]}
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fi
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if [[ ${override} -eq 0 && -r ${cacheFile} ]]; then
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while IFS= read -r line; do
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port[$idx]=$line
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idx=$(($idx+1))
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done < ${cacheFile}
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fi
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for i in "${port[@]}"; do
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parsePort $i
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if [[ ${killFlag} -eq 1 ]]; then
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killTunnel
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else
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openTunnel
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fi
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done
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printf "%s\\n" "${port[@]}" > ${cacheFile}
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if [[ ${debug} -eq 1 ]]; then
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ps aux | grep "ssh -i ${privateKeyLoc}" | grep -v grep
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fi
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