<?php

/*  Poweradmin, a friendly web-based admin tool for PowerDNS.

 *  See <https://rejo.zenger.nl/poweradmin> for more details.

 *

 *  Copyright 2007, 2008  Rejo Zenger <rejo@zenger.nl>

 *

 *  This program is free software: you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation, either version 3 of the License, or

 *  (at your option) any later version.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.

 */

session_start();

if(!@include_once("config.inc.php"))

{

	error( _('You have to create a config.inc.php!') );

}

/*************

 * Constants *

 *************/

if (isset($_GET["start"])) {

   } else {

   define('ROWSTART', 0);

}

if (isset($_GET["letter"])) {

   define('LETTERSTART', $_GET["letter"]);

   $_SESSION["letter"] = $_GET["letter"];

} elseif(isset($_SESSION["letter"])) {

   define('LETTERSTART', $_SESSION["letter"]);

} else {

   define('LETTERSTART', "a");

}

/* Database connection */

require_once("database.inc.php");

// Generates $db variable to access database.

// Array of the available zone types

$server_types = array("MASTER", "SLAVE", "NATIVE");

/*************

 * Includes  *

 *************/

require_once("error.inc.php");

require_once("auth.inc.php");

require_once("i18n.inc.php");

require_once("users.inc.php");

require_once("dns.inc.php");

require_once("record.inc.php");

$db = dbConnect();

doAuthenticate();

/*************

 * Functions *

 *************/

/*

 * Display the page option: [1] [2] .. [n]

 */

function show_pages($amount,$rowamount,$id='')

{

   if ($amount > $rowamount) {

      if (!isset($_GET["start"])) $_GET["start"]=1;

      echo _('Show page') . ":<br>";

      for ($i=1;$i<=ceil($amount / $rowamount);$i++) {

         if ($_GET["start"] == $i) {

            echo "[ <b>".$i."</b> ] ";

         } else {

            echo "[ <a href=\"".$_SERVER["PHP_SELF"]."?start=".$i;

	    if ($id!='') echo "&id=".$id;

	    echo "\">".$i."</a> ] ";

         }

      }

   }

}

/*

 * Display the alphabetic option: [0-9] [a] [b] .. [z]

 */

function show_letters($letterstart,$userid=true)

{

        echo _('Show zones beginning with') . ":<br>";

	$letter = "[[:digit:]]";

	if ($letterstart == "1")

	{

		echo "[ <span class=\"lettertaken\">0-9</span> ] ";

	}

	elseif (zone_letter_start($letter,$userid))

	{

		echo "[ <a href=\"".$_SERVER["PHP_SELF"]."?letter=1\">0-9</a> ] ";

	}

	else

	{

		echo "[ <span class=\"letternotavailble\">0-9</span> ] ";

	}

        foreach (range('a','z') as $letter)

        {

                if ($letter == $letterstart)

                {

                        echo "[ <span class=\"lettertaken\">".$letter."</span> ] ";

                }

                elseif (zone_letter_start($letter,$userid))

                {

                        echo "[ <a href=\"".$_SERVER["PHP_SELF"]."?letter=".$letter."\">".$letter."</a> ] ";

                }

                else

                {

                        echo "[ <span class=\"letternotavailble\">".$letter."</span> ] ";

                }

        }

}

function zone_letter_start($letter,$userid=true)

{

        global $db;

	global $sql_regexp;

        $query = "SELECT 

			domains.id AS domain_id,

			zones.owner,

			domains.name AS domainname

			FROM domains

			LEFT JOIN zones ON domains.id=zones.domain_id 

			WHERE substring(domains.name,1,1) ".$sql_regexp." ".$db->quote("^".$letter);

	$db->setLimit(1);

        $result = $db->query($query);

        $numrows = $result->numRows();

        if ( $numrows == "1" ) {

                return 1;

        } else {

                return 0;

        }

}

function error($msg) {

	if ($msg) {

		echo "     <div class=\"error\">Error: " . $msg . "</div>\n";

	} else {

		echo "     <div class=\"error\">" . _('An unknown error has occurred.') . "</div>\n"; 

	}

}

function success($msg) {

	if ($msg) {

		echo "     <div class=\"success\">" . $msg . "</div>\n";

	} else {

		echo "     <div class=\"success\">" . _('Something has been successfully performed. What exactly, however, will remain a mystery.') . "</div>\n"; 

	}

}

/*

 * Something has been done nicely, display a message and a back button.

 */

function message($msg)

{

    include_once("header.inc.php");

    ?>

    <P><TABLE CLASS="messagetable"><TR><TD CLASS="message"><H2><?php echo _('Success!'); ?></H2>

    <BR>

	<FONT STYLE="font-weight: Bold">

	<P>

	<?php

    if($msg)

    {

        echo nl2br($msg);

    }

    else

    {

        echo _('Successful!');

    }

    ?>

    </P>

    <BR>

    <P>

    <a href="javascript:history.go(-1)">&lt;&lt; <?php echo _('back'); ?></a></FONT>

    </P>

    </TD></TR></TABLE></P>

    <?php

    include_once("footer.inc.php");

}

/*

 * Reroute a user to a cleanpage of (if passed) arg

 */

function clean_page($arg='')

{

	if (!$arg)

	{

		header("Location: ".$_SERVER["PHP_SELF"]."?time=".time());

		exit;

	}

	else

	{

		if (preg_match('!\?!si', $arg))

		{

			$add = "&time=";

		}

		else

		{

			$add = "?time=";

		}

		header("Location: $arg$add".time());

		exit;

	}

}

function get_status($res)

{

	if ($res == '0')

	{

		return "<FONT CLASS=\"inactive\">" . _('Inactive') . "</FONT>";

	}

	elseif ($res == '1')

	{

		return "<FONT CLASS=\"active\">" . _('Active') . "</FONT>";

	}

}

function parse_template_value($val, $domain, $webip, $mailip)

{

	$val = str_replace('##DOMAIN##', $domain, $val);

	$val = str_replace('##WEBIP##', $webip, $val);

	$val = str_replace('##MAILIP##', $mailip, $val);

	return $val;

}

/*

 * Validates an email address.

 * Checks if there is something before the at '@' sign and its followed by a domain and a tld of minimum 2

 * and maximum of 4 characters.

 */

function is_valid_email($email)

{

	if(!eregi("^[0-9a-z]([-_.]?[0-9a-z])*@[0-9a-z]([-.]?[0-9a-z])*\\.([a-z]{2,6}$)", $email))

	{

		return false;

	}

	return true;

}

function v_num($string) {

	if (!eregi("^[0-9]+$", $string)) { 

		return false ;

	} else {

		return true ;

	}

}

// Debug print

function debug_print($var) {

	echo "<pre style=\"border: 2px solid blue;\">\n";

	if (is_array($var)) { print_r($var) ; } else { echo $var ; } 

	echo "</pre>\n";

}

?>