Month: October 2014

Posted on

cloudflare ddns shell script

from https://gist.github.com/larrybolt/6295160



#!/bin/sh

# modified by jfro from 

http://www.cnysupport.com/index.php/linode-dynamic-dns-ddns-update-script

# Update: changed because the old IP-service wasn't working anymore

# Uses curl to be compatible with machines that don't have wget by 

default

# modified by Ross Hosman for use with cloudflare.

#

# Place at:

# /usr/local/bin/cf-ddns.sh

# if you're lazy (like me): curl 

https://gist.githubusercontent.com/larrybolt/6295160/raw/9efbc7850613e06db1b415bdf4fbdd8361209865/cf-ddns.sh 

 > /usr/local/bin/cf-ddns.sh && chmod +x /usr/local/bin/cf-ddns.sh && 

vim /usr/local/bin/cf-ddns.sh

# run `crontab -e` and add next line:

# 0 */5 * * * * /usr/local/bin/cf-ddns.sh >/dev/null 2>&1



cfkey=API-key

cfuser=username(email)

cfhost=host-you-want-to-change



WAN_IP=`curl -s http://icanhazip.com`

if [ -f $HOME/.wan_ip-cf.txt ]; then

OLD_WAN_IP=`cat $HOME/.wan_ip-cf.txt`

else

echo "No file, need IP"

OLD_WAN_IP=""

fi



if [ "$WAN_IP" = "$OLD_WAN_IP" ]; then

echo "IP Unchanged"

else

echo $WAN_IP > $HOME/.wan_ip-cf.txt

echo "Updating DNS to $WAN_IP"

curl -s 

https://www.cloudflare.com/api.html?a=DIUP&hosts="$cfhost"&u="$cfuser"&tkn="$cfkey"&ip="$WAN_IP" 

 > /dev/null

fi