Created
August 19, 2024 08:48
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| #!/bin/bash | |
| set -e | |
| hosts=() | |
| hosts[0]="<host> <domain> <password>" | |
| cache_dir=/var/lib/misc/namecheap-dns-update | |
| mkdir -p "$cache_dir" | |
| current_ip=$(dig -4 +short myip.opendns.com @resolver1.opendns.com) | |
| for host in "${hosts[@]}" | |
| do | |
| host=($host) | |
| cache_file="$cache_dir/${host[0]}.${host[1]}" | |
| if [ -f "$cache_file" ] | |
| then | |
| last_ip=$(<"$cache_file") | |
| else | |
| last_ip="?" | |
| fi | |
| if [ "$last_ip" != "$current_ip" ] | |
| then | |
| response=$(wget -qO- "https://dynamicdns.park-your-domain.com/update?host=${host[0]}&domain=${host[1]}&password=${host[2]}&ip=${current_ip}") | |
| if echo "$response" | grep -q "<ErrCount>0</ErrCount>" | |
| then | |
| echo "Server DNS record updated for ${host[0]}.${host[1]} : ${last_ip} -> ${current_ip}" | |
| echo "$current_ip" > "$cache_file" | |
| else | |
| reason=$(echo "$response" | sed -En "s/.*<Err1>(.+)<\/Err1>.*/\1/p") | |
| echo "Server DNS record update FAILED for ${host[0]}.${host[1]} : ${reason}" | |
| fi | |
| fi | |
| done |
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