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synced 2026-03-03 16:04:53 +01:00
ec7ba74900
Instead of running a second instance of testnet once and in parallel with the background task on interface up/down, the background task is woken up. The avoids the potential for a race where under certain circumstances a ubus event for internet up or down may never be sent. Also remove unused include and add missing quotation.
77 lines
1.8 KiB
Bash
Executable file
77 lines
1.8 KiB
Bash
Executable file
#!/bin/sh
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RELOAD=0
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WAITING=0
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NETCON=0
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LASTSTATUS=""
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CURSTATUS=""
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SLEEP_TIME=30
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test_connection() {
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local addr="$1"
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local defroute="$(ip r | grep default | awk '{print$3}' | head -1)"
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local def6route="$(ip -f inet6 r | grep default | awk '{print$3}')"
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local ping6dev="$(ip -f inet6 r | grep default | awk '{print$5}')"
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local resolvfile="$(uci -q get 'dhcp.@dnsmasq[0].resolvfile')"
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if [ -n "$addr" ]; then
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ping -q -w 5 -c 1 "$addr" >/dev/null 2>&1 && return 0
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elif [ -n "$defroute" ]; then
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ping -q -w 5 -c 1 "$defroute" >/dev/null 2>&1 && return 0
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if [ -e "$resolvfile" ]; then
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for nmsrv in $(grep nameserver "$resolvfile" | awk '{print$2}'); do
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ping -q -w 5 -c 1 "$nmsrv" >/dev/null 2>&1 && return 0
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done
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fi
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elif [ -n "$def6route" -a -n "$ping6dev" ]; then
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ndisc6 -w 5 -1 "$def6route" "$ping6dev" >/dev/null 2>&1 && return 0
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fi
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return 1
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}
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internet_test() {
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local dest
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# use the destination address given in config for connectivity check
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dest="$(uci -q get testnet.global.destination)"
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# for backwards compatibility
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[ -n "$dest" ] || dest="$(uci -q get 'system.@system[0].netping_addr')"
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test_connection "$dest"
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if [ "$?" -eq 0 ]; then
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NETCON=1
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echo "{ \"online\" : true }" > /tmp/internet_connection_status
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else
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NETCON=0
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echo "{ \"online\" : false }" > /tmp/internet_connection_status
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fi
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}
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connectivity_test() {
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internet_test
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if [ "$NETCON" -eq 1 ]; then
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CURSTATUS=1
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[ "$CURSTATUS" == "$LASTSTATUS" ] || ubus send internet '{"status" : "online"}'
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LASTSTATUS=1
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else
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CURSTATUS=0
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[ "$CURSTATUS" == "$LASTSTATUS" ] || ubus send internet '{"status" : "offline"}'
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LASTSTATUS=0
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fi
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}
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trap RELOAD=1 HUP
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while true; do
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if [ "$WAITING" -eq 0 ]; then
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sleep "$SLEEP_TIME" &
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WAITING=1
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fi
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RELOAD=0
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connectivity_test
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[ "$RELOAD" -eq 0 ] && wait && WAITING=0
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done
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