42 lines
1.3 KiB
Bash
42 lines
1.3 KiB
Bash
#!/bin/ash
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IP_TEMPFILE=/tmp/wanip
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NJALLA_SUBDOMAIN="thing.com"
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NJALLA_KEY="1234"
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# Gets the current WAN interface and IP(s)
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. /lib/functions/network.sh
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network_flush_cache
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network_find_wan NET_IF
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network_find_wan6 NET_IF6
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network_get_ipaddr NET_ADDR "${NET_IF}"
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network_get_ipaddr6 NET_ADDR6 "${NET_IF6}"
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if [ "$1" = "--query" ] || [ ! -f ${IP_TEMPFILE} ]; then
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echo "Querying IP from DNS server"
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NET_ADDR_OLD="$(nslookup -type=a ${NJALLA_SUBDOMAIN} | awk '/^Address: / { print $2 }')"
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NET_ADDR6_OLD="$(nslookup -type=aaaa ${NJALLA_SUBDOMAIN} | awk '/^Address: / { print $2 }')"
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if [ ! -f ${IP_TEMPFILE} ]; then
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touch ${IP_TEMPFILE} || exit 1
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echo "NET_ADDR_OLD=${NET_ADDR_OLD}" > $IP_TEMPFILE
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echo "NET_ADDR6_OLD=${NET_ADDR6_OLD}" >> $IP_TEMPFILE
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fi
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else
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. ${IP_TEMPFILE}
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fi
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if [ "$NET_ADDR" != "$NET_ADDR_OLD" ] || [ "$NET_ADDR6" != "$NET_ADDR6_OLD" ] || [ "$1" = "--force" ]; then
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echo "IPv4: ${NET_ADDR_OLD} => ${NET_ADDR}"
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echo "IPv6: ${NET_ADDR6_OLD} => ${NET_ADDR6}"
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wget -q -O /dev/null "https://njal.la/update/?h=${NJALLA_SUBDOMAIN}&k=${NJALLA_KEY}&a=${NET_ADDR}&aaaa=${NET_ADDR6}"
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STATUS=$?
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if [ $STATUS -ne 0 ]; then
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echo "Could not set DDNS IP! (${STATUS})"
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fi
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echo "NET_ADDR_OLD=${NET_ADDR}" > $IP_TEMPFILE
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echo "NET_ADDR6_OLD=${NET_ADDR6}" >> $IP_TEMPFILE
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fi
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