mirror of
https://github.com/ivanilves/xiringuito.git
synced 2025-05-16 07:10:09 -07:00
47 lines
1.1 KiB
Bash
Executable File
47 lines
1.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# Execute/teardown on the server side
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#
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if [[ ${#} != 3 ]]; then
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echo "Usage: ${0} TUNNEL_ID IP_BASE MAX_FAILED_PINGS"
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exit 1
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fi
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declare -r TUNNEL_ID=${1}
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declare -r IP_BASE=${2}
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declare -r MAX_FAILED_PINGS=${3}
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declare -r NETWORK_DEVICE=tun${TUNNEL_ID}
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let CLIENT_LAST_IP_ADDR_OCTET="4*(${TUNNEL_ID}-1)+1"
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declare -r CLIENT_IP_ADDR=${IP_BASE}.${CLIENT_LAST_IP_ADDR_OCTET}
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if [[ ! $(echo "${PATH}" | egrep "(^|:)/sbin($|:)") ]]; then
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export PATH="/sbin:${PATH}"
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fi
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trap teardown EXIT
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function teardown() {
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sudo iptables -t nat -D POSTROUTING -s ${CLIENT_IP_ADDR} -j MASQUERADE
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kill ${PPID}
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sleep 2
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[[ ! -x /usr/sbin/tunctl ]] && sudo ip tuntap del mode tun ${NETWORK_DEVICE} || sudo /usr/sbin/tunctl -d ${NETWORK_DEVICE}
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}
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echo "CONNECTED"
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FAILED_PINGS=0
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while [[ ${FAILED_PINGS} -lt ${MAX_FAILED_PINGS} ]]; do
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ping -W3 -c1 -nq ${CLIENT_IP_ADDR} >/dev/null
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if [[ ${?} -ne 0 ]]; then
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let FAILED_PINGS+=1
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logger -i -p warn "xiringuito[${TUNNEL_ID}]: Failed to ping ${CLIENT_IP_ADDR} (${FAILED_PINGS}/${MAX_FAILED_PINGS})"
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else
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FAILED_PINGS=0
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fi
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sleep 1
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done
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teardown
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