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65 lines
1.7 KiB
Bash
Executable File
65 lines
1.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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# This script is based on cf-ddns.sh found at
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# <https://gist.github.com/larrybolt/6295160> and it's comments.
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# Inspiration also took from
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# <https://github.com/commx/ydns/blob/master/updater.sh> which is a lot
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# more complex than this.
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# Basic usage (as root):
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# curl -L https://github.com/Mikaela/scripts/raw/gh-pages/bash/ydns-simple > /usr/local/bin/ydns-simple
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# chmod 700 /usr/local/bin/ydns-simple
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## Copy-paste the following to your crontab without the #
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# */5 * * * * /usr/local/bin/ydns-simple >/dev/null 2>&1
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# yDNS details
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USEREMAIL=""
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PASSWORD=""
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HOSTNAME=""
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# Get IPv4 address
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if hash dig 2>/dev/null; then
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WAN_IP4=$(dig +short myip.opendns.com. A @208.67.220.220)
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else
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WAN_IP4=$(curl -L4 https://icanhazip.com/)
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fi
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if [ -f $HOME/.wan_ip4-ydns.txt ]; then
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OLD_WAN_IP4=$(cat $HOME/.wan_ip4-ydns.txt)
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else
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echo "No file, need IP4"
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OLD_WAN_IP4=""
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fi
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# Get IPv6 address
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if hash dig 2>/dev/null; then
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WAN_IP6=$(dig +short myip.opendns.com. AAAA @2620:0:ccd::2)
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else
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WAN_IP6=$(curl -L6 https://icanhazip.com/)
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fi
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if [ -f $HOME/.wan_ip6-ydns.txt ]; then
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OLD_WAN_IP6=$(cat $HOME/.wan_ip6-ydns.txt)
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else
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echo "No file, need IP6"
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OLD_WAN_IP6=""
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fi
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# Update IPv4
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if [ "$WAN_IP4" = "$OLD_WAN_IP4" ]; then
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echo "IP4 Unchanged"
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else
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echo $WAN_IP4 > $HOME/.wan_ip4-ydns.txt
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echo "Updating DNS to $WAN_IP4"
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curl -4 --basic -u "$USEREMAIL:$PASSWORD" --silent \
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https://ydns.eu/api/v1/update/?host=$HOSTNAME
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fi
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# Update IPv6
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if [ "$WAN_IP6" = "$OLD_WAN_IP6" ]; then
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echo "IP6 Unchanged"
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else
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echo $WAN_IP6 > $HOME/.wan_ip6-ydns.txt
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echo "Updating DNS to $WAN_IP6"
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curl -6 --basic -u "$USEREMAIL:$PASSWORD" --silent \
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https://ydns.eu/api/v1/update/?host=$HOSTNAME
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fi
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