Sonic.net

Code: Select all

#!/bin/sh
#
# Checks on current dynamic IP assignemt and sends and e-mail alert if it has changed.
# Using the public-api.sonic.net tool from "williamt", at:
# https://public-api.sonic.net/dyndns

# Who gets the alert mails:
victims="[email protected]"


recent=`cat /home/user/bin/watch-for-ip-updates.current`
save="/home/user/bin/watch-for-ip-updates.current"
current=`curl -sX GET https://public-api.sonic.net/dyndns/ip | awk -F\" '{print$4'}`
alert="/home/user/bin/watch-for-ip-updates.alert"

# Run a check to fail of of the script if the curl did not give us an IP address:
# The AT&T PTRs can be upper or lower case, using `tr` to switch all to lower.
sanity=`host $current | awk -F. '{print$5}'| tr A-Z a-z`
if [ "$sanity" != "in-addr" ];then
	echo "IP check came up with PTR ending in $sanity. Expecting in-addr." | mail -s "Dynamic IP check found a problem." $victims
	exit
fi
# Make sure we are not simply using the Sonic vpn:
sanity=`host $current |grep -c sonic.net`
if [ "$sanity" = "1" ];then
	echo "IP check came up with a Sonic IP, so will not update DNS." | mail -s "Dynamic IP check found a Sonic IP." $victims
	exit
fi

# If we got this far and it is a new IP then alert via mail and run the script to update DNS:
if [ "$recent" != "$current" ];then
	cp $save $save.`date +%Y-%m-%d-%H:%M`
	echo $current > $save
	echo "The Dynamic IP has changed." > $alert
	echo "New IP is: $current" >> $alert
	echo >> $alert
	echo "If it is currently enabled, we will now run the script to update the Sonic DNS." >> $alert
	cat $alert | mail -s "New dynamic IP" $victims
	# Update the Sonic DNS with new IP:
	/home/user/bin/dyn-update-sonic.sh
fi

Code: Select all

#!/bin/sh

# Could be done in one line but $IP might be needed at some point.
IP=`cat /home/user/bin/watch-for-ip-updates.current`
GW=`echo $IP | awk -F. '{print$1"."$2"."$3".1"}'`

# The tool now takes TTL value and will default to type "A" and will use the IP that you are hitting it from:
curl -sX PUT --data "userid=#####&apikey=########################################&hostname=domain&ttl=1800" https://public-api.sonic.net/dyndns/host
curl -sX PUT --data "userid=#####&apikey=########################################&hostname=www.domain.com&ttl=1800" https://public-api.sonic.net/dyndns/host
curl -sX PUT --data "userid=#####&apikey=########################################&hostname=host.domain.com&ttl=1800" https://public-api.sonic.net/dyndns/host