32 lines
948 B
Bash
Executable File
32 lines
948 B
Bash
Executable File
#!/bin/bash
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set -e
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PIDFILE=/var/run/qubes/qubes_netwatcher.pid
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CURR_NETCFG=""
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# PIDfile handling
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[[ -e $PIDFILE ]] && kill -s 0 $(<$PIDFILE) 2>/dev/null && exit 0
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echo $$ >$PIDFILE
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trap 'exit 0' SIGTERM
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while true; do
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NET_DOMID=$(/usr/bin/xenstore-read qubes_netvm_domid)
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if [[ -n "$NET_DOMID" ]] && [[ $NET_DOMID -gt 0 ]]; then
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UNTRUSTED_NETCFG=$(/usr/bin/xenstore-read /local/domain/$NET_DOMID/qubes_netvm_external_ip)
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# UNTRUSTED_NETCFG is not parsed in any way
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# thus, no sanitization ready
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# but be careful when passing it to other shell scripts
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if [[ "$UNTRUSTED_NETCFG" != "$CURR_NETCFG" ]]; then
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/sbin/service qubes_firewall stop
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/sbin/service qubes_firewall start
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CURR_NETCFG="$UNTRUSTED_NETCFG"
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/usr/bin/xenstore-write qubes_netvm_external_ip "$CURR_NETCFG"
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fi
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/usr/bin/xenstore-watch-qubes /local/domain/$NET_DOMID/qubes_netvm_external_ip
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else
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/usr/bin/xenstore-watch-qubes qubes_netvm_domid
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fi
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done
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