Cloudflare dynamic DNS updater

ddns-cloudflare.sh

#!/bin/bash
DOMAIN=${HOMELAB_CLOUDFLARE_DOMAIN:-"example.com"}
TOKEN=${HOMELAB_CLOUDFLARE_API_TOKEN:-"123-456-789-abc-def"}

# api url
URL="https://api.cloudflare.com/client/v4/zones"

# get zone id
REC=$(curl -s -X GET "${URL}?name=${DOMAIN}&status=active&page=1&per_page=20&order=status&direction=desc&match=all" \
    -H "Authorization: Bearer ${TOKEN}" \
    -H "Content-Type: application/json")
ZONE_ID=$(echo ${REC} | jq -r '.result[0].id')

# get record ids showing all A records:
REC=$(curl -s -X GET "${URL}/${ZONE_ID}/dns_records?type=A" -H "Authorization: Bearer ${TOKEN}" \
-H "Content-Type: application/json")
RECORD_IDS=$(echo ${REC} | jq -r '.result[].id' | tr '\n' ' ')

for RECORD_ID in ${RECORD_IDS}
do
    # get actual registered ip
    REC=$(curl -s -X GET "${URL}/${ZONE_ID}/dns_records/${RECORD_ID}" -H "Authorization: Bearer ${TOKEN}" \
    -H "Content-Type: application/json")
    registered=$(echo ${REC} | jq '.result.content')

    # get current real external ip
    current=\"$(curl -s ifconfig.me || curl -s icanhazip.com)\"

    # function to update record ip (other values remain the same)
    function change_record() {
        name=$(echo ${REC} | jq '.result.name')
        type=$(echo ${REC} | jq '.result.type')
        ttl=$(echo ${REC} | jq '.result.ttl')
        proxied=$(echo ${REC} | jq '.result.proxied')
        curl -X PUT "${URL}/${ZONE_ID}/dns_records/${RECORD_ID}" -H "Authorization: Bearer ${TOKEN}" \
        --data '{"type":'"${type}"',"name":'"${name}"',"content":'"${current}"',"ttl":'"${ttl}"',"proxied":'"${proxied}"'}'
    }
    [ "$current" != "$registered" ] && {
        change_record     
        echo "Updated ${registered} to ${current} for ${DOMAIN}"
    }
done

This will update all "A" records