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<file>
#!/bin/bash
TO="user@example.com"
FROM="root@example.com"
DBLIST=$(mysql -uroot -pPASSWORD -B -e "use postfixadmin; select domain from domain;"| egrep -v "ALL|domain")

date2stamp () {
    date --utc --date "$1" +%s
}

stamp2date (){
    date --utc --date "1970-01-01 $1 sec" "+%Y-%m-%d %T"
}

dateDiff (){
    case $1 in
        -s)   sec=1;      shift;;
        -m)   sec=60;     shift;;
        -h)   sec=3600;   shift;;
        -d)   sec=86400;  shift;;
        *)    sec=86400;;
    esac
    dte1=$(date2stamp $1)
    dte2=$(date2stamp $2)
    diffSec=$((dte2-dte1))
    if ((diffSec < 0)); then abs=-1; else abs=1; fi
    echo $((diffSec/sec*abs))
}
mail (){
local DOMAIN="$1"
local OWNER="$2"
local DAYSLEFT="$3"
local TO="$4"
local FROM="$5"
local NSERVER="$6"

cp /root/domain_check/mail-template.msg /tmp/domain_check.$$

sed -e "s/DOMAIN/$DOMAIN/g" \
    -e "s/OWNER/$OWNER/g" \
    -e "s/DAYSLEFT/$DAYSLEFT/g" \
    -e "s/TO/$TO/g" \
    -e "s/FROM/$FROM/g" \
    -e "s/NSERVER/$NSERVER/g"  /tmp/domain_check.$$ | sendmail -i -f $FROM -- $TO 

}

for i in $DBLIST
do
	whois $i > /tmp/whois.$$
	OWNER=$(cat /tmp/whois.$$ | egrep -i "owner:|^name:|^Registrant Name:" | awk '{print ($2,$3,$4)}' | sort -u | cut -d: -f2)
	EXPIREDATE=$(cat /tmp/whois.$$ | egrep -i "^expires|^Expiration Date" | awk '{print $2'} | cut -d: -f2)
	EXPIRES=$(date --rfc-3339=date --date $EXPIREDATE)
	TODAY=$(date "+%Y-%m-%d")
	DAYSLEFT=$(dateDiff -d $TODAY $EXPIRES)
	NS=$(cat /tmp/whois.$$ | egrep -i "^nserver|^hostname|name server"| awk '{print $2}'| cut -d: -f2)
	NSERVER=$(echo $NS| sed -e "s/ /\, /g")


	echo $i is owned by $OWNER for the next $DAYSLEFT

	if [ $DAYSLEFT -lt 3000 ]
	then
		mail $i "$OWNER" $DAYSLEFT $TO $FROM "$NSERVER"
	fi
	sleep 2
	rm /tmp/whois.$$
done
</file>

Mail template:

<file>
From: "din System Administrator" <FROM>
MIME-Version: 1.0
To: TO
Subject: \\\///\\\///### =?ISO-8859-1?Q?DOM=C6NE_ALARM_FOR_DOMAIN_?=
 =?ISO-8859-1?Q?=23=23=23=5C=5C=5C///=5C=5C=5C///?=
Content-Type: multipart/alternative;
 boundary="------------090809090805040807050202"

This is a multi-part message in MIME format.
--------------090809090805040807050202
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 8bit


:-$ _/*Husk at forny domænet DOMAIN*/:-$ _

Der er _/*DAYSLEFT*/_ dage tilbage

Ejer: OWNER
Name Servers: NSERVER


--------------090809090805040807050202
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <meta http-equiv="content-type" content="text/html;
      charset=ISO-8859-1">
  </head>
  <body bgcolor="#ffffff" text="#000000">
    <br>
    <meta http-equiv="content-type" content="text/html;
      charset=ISO-8859-1">
    <div align="center"><big><big><big><small><span
                class="moz-smiley-s12"><span> :-$&nbsp; </span></span><u><i><b>Husk
                    at forny dom&aelig;net DOMAIN</b></i><span
                  class="moz-smiley-s12"><span> :-$ </span></span></u><br>
              <br>
            </small></big></big></big>
      <div align="left">Der er <u><i><b><font color="#ff0000">DAYSLEFT</font></b></i></u>
        dage tilbage<br>
        <br>

        <br>
        Ejer: John Doe <br>
        Name Servers: NSERVER <br>
        <br>
      </div>
    </div>
  </body>

</html>

--------------090809090805040807050202--
</file>