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38 lines
1.4 KiB
Bash
38 lines
1.4 KiB
Bash
#!/bin/bash
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# HEDDNS Update Script
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# 10-APR-2023 - Jay Moore (dewdude@pickmy.org)
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# https://git.pickmy.org/dewdude/HEDyn
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# FreeBSD 3-Clause License (see LICENSE)
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# Hostname & APIKey Configuration:
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hostname=DDNSHOSTNAME
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APIkey=HOSTNAMEAPIKEY
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# Set to your IPv6 Interface Name
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dev=eth0
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# One IP Check service returns just the ip; the other appends "Current IP Address:" we need to filter
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v4=$(curl -s http://freemyip.com/checkip)
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# v4=$(curl -s http://checkip.dyndns.org/ | awk -F '[:<>]' '/Current IP Address/{sub(/^[[:space:]]+/, "", $14); print $14}')
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# v4=$(curl -s http://192.168.1.1/getv4.php) # This uses my scripts on pfSense
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# Pull IPv6 from interface - Pulls first non-local v6 from specified device
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v6=$(/sbin/ip -6 addr show dev $dev | awk '/inet6/ && !/fe80|::1/ {print $2}' | cut -f1 -d'/') # systems using 'ip'
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#v6=$(ifconfig $dev | awk '/inet6/ && !/fe80|::1/ {print $2}') # systems using 'ifconfig'
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# Commands for curl
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curl="curl -s -S -q -f https://dyn.dns.he.net/nic/update -d hostname=$hostname -d password=$APIkey"
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v4cmd="-d myip=$v4"
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v6cmd="-d myip=$v6"
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# Puts current DNS records in to variable
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loadips(){
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A=$1
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AAAA=$2
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}
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loadips $(nslookup $hostname | awk '/^Address: / { print $2 }') # Gets current A and AAA recoreds
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[[ $v4 != $A ]] && $curl $v4cmd && echo "v4 Updated" # Update if different
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[[ $v6 != $AAAA ]] && $curl $v6cmd && echo "v6 Updated" # Update if different
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