Created
June 15, 2023 01:55
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Synology cloudflare DDNS provider script
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#!/bin/bash | |
set -e; | |
ipv4Regex="((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])" | |
ttl=60 | |
proxy="false" | |
# DSM Config | |
username="$1" | |
password="$2" | |
hostname="$3" | |
ipAddr="$4" | |
if [[ $ipAddr =~ $ipv4Regex ]]; then | |
recordType="A"; | |
else | |
recordType="AAAA"; | |
fi | |
listDnsApi="https://api.cloudflare.com/client/v4/zones/${username}/dns_records?type=${recordType}&name=${hostname}" | |
createDnsApi="https://api.cloudflare.com/client/v4/zones/${username}/dns_records" | |
res=$(curl -s -X GET "$listDnsApi" -H "Authorization: Bearer $password" -H "Content-Type:application/json") | |
resSuccess=$(echo "$res" | jq -r ".success") | |
if [[ $resSuccess != "true" ]]; then | |
echo "badauth"; | |
exit 1; | |
fi | |
recordId=$(echo "$res" | jq -r ".result[0].id") | |
recordIp=$(echo "$res" | jq -r ".result[0].content") | |
if [[ $recordIp = "$ipAddr" ]]; then | |
echo "nochg"; | |
exit 0; | |
fi | |
if [[ $recordId = "null" ]]; then | |
# Record not exists | |
res=$(curl -s -X POST "$createDnsApi" -H "Authorization: Bearer $password" -H "Content-Type:application/json" --data "{\"type\":\"$recordType\",\"name\":\"$hostname\",\"content\":\"$ipAddr\",\"ttl\":$ttl,\"proxied\":$proxy}") | |
else | |
# Record exists | |
updateDnsApi="https://api.cloudflare.com/client/v4/zones/${username}/dns_records/${recordId}"; | |
res=$(curl -s -X PUT "$updateDnsApi" -H "Authorization: Bearer $password" -H "Content-Type:application/json" --data "{\"type\":\"$recordType\",\"name\":\"$hostname\",\"content\":\"$ipAddr\",\"ttl\":$ttl,\"proxied\":$proxy}") | |
fi | |
resSuccess=$(echo "$res" | jq -r ".success") | |
if [[ $resSuccess = "true" ]]; then | |
echo "good"; | |
else | |
echo "badauth"; | |
fi |
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