DreamHost Dynamic DNS script for OpenWRT

dh-ddns.sh

#!/bin/sh

# DreamHost Dynamic DNS script for OpenWRT
#  by Rodrigo Damazio <rodrigo@damazio.org>
#  updated by Kyle Bassett <kylebassett@gmail.com>
#  ported by Carlo 'zED' Caputo <carlo.caputo@gmail.com>

USER=carlo.caputo@gmail.com
PASS=xxxxxx
ACCOUNT=123456
HOST=www
DOMAIN=9hells.org
RECTYPE=A
IFACE=ppp0

# to use this record update script, first create a record at:
# https://panel.dreamhost.com/index.cgi?tree=domain.manage&current_step=Index&next_step=ShowZone&domain=$DOMAIN

RECVAL=`ifconfig $IFACE | sed -n 's/.*inet addr: *\([0-9.]*\) .*/\1/p'`

ACTVAL=`nslookup $HOST.$DOMAIN | sed -n 's/Address.*: *//p' | tail -1`

test "$RECVAL" = "$ACTVAL" && exit

HEADER=`mktemp -t`
rm /var/tmp.* # XXX hardcoded, cleanup loose mktemp

CURL_OPT="-m 15 --retry 3"

curl $CURL_OPT -s -k -D $HEADER "https://panel.dreamhost.com/" >/dev/null || exit
COOKIE="`sed -n 's/.*\(Cookie:.*\)/\1/p' $HEADER`"                               
echo "$COOKIE"                                    
rm $HEADER    
          
curl $CURL_OPT -s -k -H "$COOKIE" -d "Nscmd=Nlogin&username=$USER&password=$PASS" "https://panel.dreamhost.com/index.cgi" >/dev/null || exit
curl $CURL_OPT -s -k -H "$COOKIE" "https://panel.dreamhost.com/index.cgi?active_account=$ACCOUNT" >/dev/null || exit
curl $CURL_OPT -s -k -H "$COOKIE" "https://panel.dreamhost.com/index.cgi?tree=domain.manage&current_step=Index&next_step=ShowZone&domain=$DOMAIN" |
        grep "next_step=ShowRecord&editname=$HOST&editzone=$DOMAIN&edittype=$RECTYPE" | # grep -v `echo $RECVAL | sed 's/\./%2E/g'` |
        sed 's/"><img.*//' | sed 's/.*href="//' | xargs curl $CURL_OPT -s -k -D $HEADER -H "$COOKIE" >/dev/null || exit

curl $CURL_OPT -s -k -H "$COOKIE" \
        -d "tree=domain.manage&current_step=ShowRecord&next_step=EditRecord&newname=$HOST&newtype=$RECTYPE&newvalue=$RECVAL&newcomment=" \
        "https://panel.dreamhost.com/" | sed -n 's/.*\(Success!\).*/\1/p' || exit