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72 lines
1.7 KiB
Bash
Executable file
72 lines
1.7 KiB
Bash
Executable file
#!/bin/sh
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. /lib/functions.sh
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. /lib/network/utils.sh
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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$5}')"
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if [ -n "$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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for nmsrv in $(grep nameserver /var/resolv.conf.auto | awk '{print$2}'); do
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ping -q -w 5 -c 1 $nmsrv >/dev/null 2>&1 && return 0
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done
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elif [ -n "$def6route" -a -n "$ping6dev" ]; then
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ndisc6 -w 5 -1 $def6route $ping6dev >/dev/null 2>&1 && return 0
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fi
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return 1
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}
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internet_test() {
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local link dest
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# use the destination address given in config for connectivity check
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dest="$(uci -q get netmode.testnet.destination)"
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# for backwards compatibility
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[ -n "$dest" ] || dest="$(uci -q get diagnostics.@connectivity[0].destination)"
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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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if [ "$1" == "once" ]; then
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connectivity_test
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exit 0
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fi
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while true; do
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connectivity_test
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sleep $SLEEP_TIME
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done
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