67 lines
1 KiB
Bash
Executable file
67 lines
1 KiB
Bash
Executable file
#!/bin/sh
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conf=/etc/config/etherswitch
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switch_state=-1
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check_fn() {
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type $1 &> /dev/null || {
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>&2 echo "$1 is undefined"
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exit 1
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}
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}
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load_config() {
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unset -f on_switch_close
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unset -f on_switch_open
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unset -f on_switch_toggle
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source $conf
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if [ -z "$device" ]
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then
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>&2 echo "device is not set"
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exit 1
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fi
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if [ -z "$port" ]
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then
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>&2 echo "port is not set"
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exit 1
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fi
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# check if $device is a network device
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swconfig dev $device show > /dev/null
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if [ $? -eq 1 ]; then exit 1; fi
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check_fn "on_switch_close"
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check_fn "on_switch_open"
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check_fn "on_switch_toggle"
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}
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# handle SIGTERM
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trap 'exit' 15
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# handle SIGHUP (config reload)
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trap 'load_config' 1
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load_config
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echo $$ > /var/run/etherswitch.pid
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while :
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do
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swconfig dev $device port $port show | grep -q "up"
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current_state=$?
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if [ $current_state -ne $switch_state ]
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then
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switch_state=$current_state
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on_switch_toggle
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if [ $switch_state -eq 1 ]
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then
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on_switch_open
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else
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on_switch_close
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fi
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fi
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sleep 1
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done
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