update-zoneedit

#!/bin/sh

# Script to update a dynamic DNS entry managed by ZoneEdit.
#
# Usage:
#  update-zoneedit [domain]
#
#  (with environment variable ZONEEDIT_CREDENTIALS set to
#   "username:password")
#
# If the 'domain' parameter is omitted, the current hostname (as returned
# by `hostname -f`) will be used.
#

# Make sure ZoneEdit credentials have been specified.
if [ "$ZONEEDIT_CREDENTIALS" == "" ]; then
	echo "ZONEEDIT_CREDENTIALS environment variable not set"
	exit 1
else
	USERNAME=`echo $ZONEEDIT_CREDENTIALS | awk -F: '{ print $1 }'`
fi

# Use the domain given at the command line, or else our hostname.
if [ "$1" == "" ]; then
	DOMAIN=`hostname`
else
	DOMAIN="$1"
fi

# Print a message iff we're using an interactive shell.
if [ "$PS1" != "" ]; then
	echo "Updating DNS record for '$DOMAIN' with ZoneEdit user '$USERNAME'"
fi

# Fetch the ZoneEdit Dynamic DNS update page!
HTTP_AUTH=basic:*:$ZONEEDIT_CREDENTIALS \
	fetch -q -o - \
	https://dynamic.zoneedit.com/auth/dynamic.html?host=$DOMAIN |\
	grep -v "SUCCESS CODE="