ddns cloudflare

ddns_cf.sh

#!/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])"

proxy="false"

# DSM Config
username="xx"
password="yy"
hostname="sub.domain.com"
ipAddr=`curl -s cip.cc|awk 'NR==1{print $3}'`
#ipAddr=`curl -s 'https://cloudflare.com/cdn-cgi/trace'|grep ip|awk -F '=' '{print $2}'`

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

recordIp=$(echo "$res" | jq -r ".result[0].content")
if [[ $recordIp = "$ipAddr" ]]; then
    echo "nochg";
    exit 0;
fi

recordId=$(echo "$res" | jq -r ".result[0].id")
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\",\"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\",\"proxied\":$proxy}")
fi

resSuccess=$(echo "$res" | jq -r ".success")
if [[ $resSuccess = "true" ]]; then
    echo "good";
else
    echo "badauth";
fi

https://gist.github.com/benkulbertis/fff10759c2391b6618dd#gistcomment-3878052
use sed instead jq