WB 2.08.x

------------------------------------- 2.7.0 -------------------------------------

08-Feb-2008 Thomas Hornik

-	Removed unused function is_access_denied() from search

04-Feb-2008 Thomas Hornik

!	email-addresses are excluded from search-results page.

  		if($file_id != 'css' && file_exists(WB_PATH .'/modules/mail_filter/js/mdcr.js')) {

			$head_links .= '<script type="text/javascript" src="'.WB_URL.'/modules/mail_filter/js/mdcr.js"></script>' ."\n";

if(file_exists(WB_PATH .'/modules/mail_filter/filter-routines.php')) {

	// include the filter routines

	require_once(WB_PATH .'/modules/mail_filter/filter-routines.php');

	// get the mail filter settings from the database 

	$mail_filter_settings = get_mail_filter_settings();

	// check if we should filter emails before displaying them

	if($mail_filter_settings['email_filter'] == '1') {

		// filter email addresses before displaying them

		$frontend_output = filter_email_links($frontend_output);

		echo $frontend_output;

}

<?php

// $Id$

/*

 Website Baker Project <http://www.websitebaker.org/>

 Copyright (C) 2004-2008, Ryan Djurovich

 Website Baker 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 2 of the License, or

 (at your option) any later version.

 Website Baker 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 Website Baker; if not, write to the Free Software

 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

// prevent this file from being accessed directly

if(!defined('WB_PATH')) { exit('Cannot access this file directly'); }

$table = TABLE_PREFIX .'mod_mail_filter';

$database->query("DROP TABLE `$table`");

?>

<?php

// $Id$

/*

 Website Baker Project <http://www.websitebaker.org/>

 Copyright (C) 2004-2008, Ryan Djurovich

 Website Baker 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 2 of the License, or

 (at your option) any later version.

 Website Baker 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 Website Baker; if not, write to the Free Software

 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

// prevent this file from being accessed directly

if(!defined('WB_PATH')) { exit('Cannot access this file directly'); }

$table = TABLE_PREFIX .'mod_mail_filter';

$database->query("DROP TABLE IF EXISTS `$table`");

$database->query("CREATE TABLE `$table` (

	`email_filter` VARCHAR(1) NOT NULL DEFAULT '0',

	`mailto_filter` VARCHAR(1) NOT NULL DEFAULT '0',

	`at_replacement` VARCHAR(255) NOT NULL DEFAULT '(at)',

	`dot_replacement` VARCHAR(255) NOT NULL DEFAULT '(dot)'

	)"

);

// add new row using the table default values defined above

//$database->query("INSERT INTO ".TABLE_PREFIX."mod_mail_filter");

$database->query("INSERT INTO ".TABLE_PREFIX."mod_mail_filter (email_filter, mailto_filter, at_replacement, dot_replacement) VALUES ('0', '0', '(at)', '(dot)')");

?>

<?php

// $Id$

/*

 Website Baker Project <http://www.websitebaker.org/>

 Copyright (C) 2004-2008, Ryan Djurovich

 Website Baker 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 2 of the License, or

 (at your option) any later version.

 Website Baker 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 Website Baker; if not, write to the Free Software

 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

header('Location: ../index.php');

?>

/*

--------------------------------------------------------------------------------

  MDCR (Mail DeCrypt Routine) for Website Baker v2.6.x

  Licencsed under GNU, written by Christian Sommer (Doc)

--------------------------------------------------------------------------------

*/

function mdcr(s) {

  location.href=dcstr(s);

}

function dcstr(s) {

  var m = unescape(s);

  var x = m.charCodeAt(7)-97;

  var c = m.substr(0,7) + m.substr(8);

  var n=0;

  var r="";

  for(var i=0; i<c.length; i++) {

    r+=String.fromCharCode(c.charCodeAt(i) - x);

  }

  return r;

}

<?php

// $Id$

/*

 Website Baker Project <http://www.websitebaker.org/>

 Copyright (C) 2004-2008, Ryan Djurovich

 Website Baker 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 2 of the License, or

 (at your option) any later version.

 Website Baker 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 Website Baker; if not, write to the Free Software

 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

header("Location: ../../../index.php");

?>

<?php

// $Id$

/*

 Website Baker Project <http://www.websitebaker.org/>

 Copyright (C) 2004-2008, Ryan Djurovich

 Website Baker 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 2 of the License, or

 (at your option) any later version.

 Website Baker 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 Website Baker; if not, write to the Free Software

 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

// direct access prevention

defined('WB_PATH') OR die(header('Location: ../index.php'));

// check if module language file exists for the language set by the user (e.g. DE, EN)

if(!file_exists(WB_PATH .'/modules/mail_filter/languages/'.LANGUAGE .'.php')) {

	// no module language file exists for the language set by the user, include default module language file EN.php

	require_once(WB_PATH .'/modules/mail_filter/languages/EN.php');

} else {

	// a module language file exists for the language defined by the user, load it

	require_once(WB_PATH .'/modules/mail_filter/languages/'.LANGUAGE .'.php');

}

// check if data was submitted

if(isset($_POST['save_settings'])) {

	// get configuration settings

	$email_filter = ($_POST['email_filter'] == '1') ? '1' : '0';

	$mailto_filter = ($_POST['mailto_filter'] == '1') ? '1' : '0';

	// get replacement settings

	$at_replacement = strip_tags($_POST['at_replacement']);

	$at_replacement = (strlen(trim($at_replacement)) > 0) ? $admin->add_slashes($at_replacement) : '(at)';

	$dot_replacement = strip_tags($_POST['dot_replacement']);

	$dot_replacement = (strlen(trim($dot_replacement)) > 0) ? $admin->add_slashes($dot_replacement) : '(dot)';

	// update database settings

	$database->query("UPDATE " .TABLE_PREFIX ."mod_mail_filter SET email_filter = '$email_filter', 

		mailto_filter = '$mailto_filter', at_replacement = '$at_replacement', dot_replacement = '$dot_replacement'");

	// check if there is a database error, otherwise say successful

	if($database->is_error()) {

		$admin->print_error($database->get_error(), $js_back);

	} else {

		$admin->print_success($MESSAGE['PAGES']['SAVED'], ADMIN_URL.'/admintools/tool.php?tool=mail_filter');

	}

} else {

	// write out heading

	echo '<h2>' .$MOD_MAIL_FILTER['HEADING'] .'</h2>';

	// include filter functions

	require_once(WB_PATH .'/modules/mail_filter/filter-routines.php');

	// read the mail filter settings from the database 

	$data = get_mail_filter_settings();

	// output the form with values from the database

	echo '<p>' .$MOD_MAIL_FILTER['HOWTO'] .'</p>';

?>

<form name="store_settings" action="<?php echo $_SERVER['REQUEST_URI']; ?>" method="post">

	<table width="98%" cellspacing="0" cellpadding="5px" class="row_a">

	<tr><td colspan="2"><strong><?php echo $MOD_MAIL_FILTER['BASIC_CONF'];?>:</strong></td></tr>

	<tr>

		<td width="35%"><?php echo $MOD_MAIL_FILTER['EMAIL_FILTER'];?>:</td>

		<td>

			<input type="radio" <?php echo ($data['email_filter']=='1') ?'checked="checked"' :'';?> 

				name="email_filter" value="1"><?php echo $MOD_MAIL_FILTER['ENABLED'];?>

			<input type="radio" <?php echo ($data['email_filter']=='0') ?'checked="checked"' :'';?> 

				name="email_filter" value="0"><?php echo $MOD_MAIL_FILTER['DISABLED'];?>

		</td>

	</tr>

	<tr>

		<td><?php echo $MOD_MAIL_FILTER['MAILTO_FILTER'];?>:</td>

		<td>

			<input type="radio" <?php echo ($data['mailto_filter']=='1') ?'checked="checked"' :'';?>

				name="mailto_filter" value="1"><?php echo $MOD_MAIL_FILTER['ENABLED'];?>

			<input type="radio" <?php echo (($data['mailto_filter'])=='0') ?'checked="checked"' :'';?>

				name="mailto_filter" value="0"><?php echo $MOD_MAIL_FILTER['DISABLED'];?>

		</td>

	</tr>

	<tr><td colspan="2"><br /><strong><?php echo $MOD_MAIL_FILTER['REPLACEMENT_CONF'];?>:</strong></td></tr>

	<tr>

		<td><?php echo $MOD_MAIL_FILTER['AT_REPLACEMENT'];?>:</td>

		<td><input type="text" style="width: 160px" value="<?php echo $data['at_replacement'];?>" 

			name="at_replacement"/></td>

	</tr>

	<tr>

		<td><?php echo $MOD_MAIL_FILTER['DOT_REPLACEMENT'];?>:</td>

		<td><input type="text" style="width: 160px" value="<?php echo $data['dot_replacement'];?>" 

			name="dot_replacement"/></td>

	</tr>

	</table>

	<input type="submit" name="save_settings" style="margin-top:10px; width:140px;" value="<?php echo $TEXT['SAVE']; ?>" />

</form>

<?php

}

?>

<?php

// $Id$

/*

 Website Baker Project <http://www.websitebaker.org/>

 Copyright (C) 2004-2008, Ryan Djurovich

 Website Baker 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 2 of the License, or

 (at your option) any later version.

 Website Baker 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 Website Baker; if not, write to the Free Software

 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 -----------------------------------------------------------------------------------------

  Email Output Filter tool for Website Baker v2.7

  Licencsed under GNU, written by Christian Sommer (Doc)

 -----------------------------------------------------------------------------------------

   v0.10  (doc; 21 Jan, 2008)

    + initial module release (Note: requires WB 2.7 core file changes to work)

*/

$module_directory 	= 'mail_filter';

$module_name 			= 'Email Output Filter';

$module_function 		= 'tool';

$module_version 		= '0.10';

$module_platform 		= '2.7.x';

$module_author 		= 'Christian Sommer (doc)';

$module_license 		= 'GNU General Public License';

$module_description 	= 'This module allows you to define rewrite rules for emails (e.g. <em>name@mail.com</em> --> <em>name(at)mail(dot).com</em>).';

?>

<?php

// $Id$

/*

 Website Baker Project <http://www.websitebaker.org/>

 Copyright (C) 2004-2008, Ryan Djurovich

 Website Baker 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 2 of the License, or

 (at your option) any later version.

 Website Baker 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 Website Baker; if not, write to the Free Software

 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 -----------------------------------------------------------------------------------------

  DEUTSCHE SPRACHDATEI FUER DAS MODUL: MAIL_FILTER

 -----------------------------------------------------------------------------------------

*/

// Deutsche Modulbeschreibung

$module_description 	= 'Dieses Modul erlaubt Emailfilterung vor der Ausgabe (z.B. <em>name@email.de</em> --> <em>name(at)email(dot).de</em>).';

// ?berschriften und Textausgaben

$MOD_MAIL_FILTER['HEADING']				= 'Email Ausgabe Filterung';

$MOD_MAIL_FILTER['HOWTO']					= 'Mit nachfolgenden Optionen kann die Emailfilterung ein- und ausgeschaltet werden. Um die Javascript mailto: Verschl&uuml;sselung zu aktivieren, muss die PHP Funktion <em>register_frontend_modfiles(\'js\')</em> in der index.php des Templates eingebunden werden.';

// Text and captions of form elements

$MOD_MAIL_FILTER['BASIC_CONF']			= 'Grundeinstellungen';

$MOD_MAIL_FILTER['EMAIL_FILTER']			= 'Textmail Filterung';

$MOD_MAIL_FILTER['MAILTO_FILTER']		= 'Mailto Filterung (Javascript)';

$MOD_MAIL_FILTER['ENABLED']				= 'Aktiviert';

$MOD_MAIL_FILTER['DISABLED']				= 'Ausgeschaltet';

$MOD_MAIL_FILTER['REPLACEMENT_CONF']	= 'Email Ersetzungen';

$MOD_MAIL_FILTER['AT_REPLACEMENT']		= 'Ersetzte "@" durch';

$MOD_MAIL_FILTER['DOT_REPLACEMENT']		= 'Ersetze "." durch';

?>

<?php

// $Id$

/*

 Website Baker Project <http://www.websitebaker.org/>

 Copyright (C) 2004-2008, Ryan Djurovich

 Website Baker 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 2 of the License, or

 (at your option) any later version.

 Website Baker 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 Website Baker; if not, write to the Free Software

 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 -----------------------------------------------------------------------------------------

  ENGLISH LANGUAGE FILE FOR THE ADDON: MAIL FILTER

 -----------------------------------------------------------------------------------------

*/

// Headings and text outputs

$MOD_MAIL_FILTER['HEADING']				= 'Email Output Filter';

$MOD_MAIL_FILTER['HOWTO']					= 'You can enable/disable the output filtering of emails with the options below. For Javascript mailto: encryption you need to add the <em>register_frontend_modfiles(\'js\')</em> PHP function call to the index.php of your template.';

// Text and captions of form elements

$MOD_MAIL_FILTER['BASIC_CONF']			= 'Basic Configuration';

$MOD_MAIL_FILTER['EMAIL_FILTER']			= 'Email Output Filter';

$MOD_MAIL_FILTER['MAILTO_FILTER']		= 'Javascript Encryption (mailto)';

$MOD_MAIL_FILTER['ENABLED']				= 'Enabled';

$MOD_MAIL_FILTER['DISABLED']				= 'Disabled';

$MOD_MAIL_FILTER['REPLACEMENT_CONF']	= 'Email Replacements';

$MOD_MAIL_FILTER['AT_REPLACEMENT']		= 'Replace "@" by';

$MOD_MAIL_FILTER['DOT_REPLACEMENT']		= 'Replace "." by';

?>

<?php

// $Id$

/*

 Website Baker Project <http://www.websitebaker.org/>

 Copyright (C) 2004-2008, Ryan Djurovich

 Website Baker 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 2 of the License, or

 (at your option) any later version.

 Website Baker 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 Website Baker; if not, write to the Free Software

 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

header("Location: ../../../index.php");

?>

<?php

// $Id$

/*

 Website Baker Project <http://www.websitebaker.org/>

 Copyright (C) 2004-2008, Ryan Djurovich

 Website Baker 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 2 of the License, or

 (at your option) any later version.

 Website Baker 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 Website Baker; if not, write to the Free Software

 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

// direct access prevention

defined('WB_PATH') OR die(header('Location: ../index.php'));

// function to read the current filter settings

if (!function_exists('get_mail_filter_settings')) {

	function get_mail_filter_settings() {

		global $database, $admin;

		// connect to database and read out filter settings

		$result = $database->query("SELECT * FROM " .TABLE_PREFIX ."mod_mail_filter");

		if($result->numRows() > 0) {

			// get all data

			$data = $result->fetchRow();

			$filter_settings['email_filter'] = $admin->strip_slashes($data['email_filter']);

			$filter_settings['mailto_filter'] = $admin->strip_slashes($data['mailto_filter']);

			$filter_settings['at_replacement'] = $admin->strip_slashes($data['at_replacement']);

			$filter_settings['dot_replacement'] = $admin->strip_slashes($data['dot_replacement']);

		} else {

			// something went wrong, use dummy value

			$filter_settings['email_filter'] = '0';

			$filter_settings['mailto_filter'] = '0';

			$filter_settings['at_replacement'] = '(at)';

			$filter_settings['dot_replacement'] = '(dot)';

		}

		// return array with filter settings

		return $filter_settings;

	}

}

// function to rewrite email before beeing displayed the frontend

if (!function_exists('filter_email_links')) {

	function filter_email_links($content) {

		// get the mailer settings from the global variable defined in /wb/index.php

		global $mail_filter_settings;

		// check if there is anything to do

		global $mail_filter_settings;

		if(!isset($mail_filter_settings['email_filter']) || $mail_filter_settings['email_filter'] !=='1' ||

			!isset($mail_filter_settings['mailto_filter']) || !isset($mail_filter_settings['at_replacement']) || 

			!isset($mail_filter_settings['dot_replacement'])) {

			return $content;

		}

		// search pattern to find all mail addresses embedded in the frontend content (both text and mailto emails)

		$pattern = '#(<a href="mailto:)?(\w[\w|\.|\-]+@\w[\w|\.|\-]+\.[a-zA-Z]{2,})([^">]*">)?([^<]*</a>)?#i';

		/*

			exp 1:  (<a href=mailto:)?	-> Optional: search for <a href=mailto:

			exp 2a: (\w[\w|\.|\-]+@ 	 	-> 1st char word element, one ore more (+) word elements, or (|) . or (|) - followed by @

			exp 2b: \w[\w|\.|\-]+ 		-> see exp 2 for explanation

			exp 2c: \.[a-zA-Z]{2,})  	-> dot followed by at least 2 characters (TLD filter: .de, .com, .info) 

			exp 3: ([^">]*">)?  			-> Optional: all characters except > followed by ">; could contain ?subject=...&body=...

			exp 4: ([^<]*</a>)?  			-> Optional: all characters except <; email link message

			? 1 or 0 matches, # encapsulate regex, () subpattern as additional array element, i.. inherent (not case sensitive)

		*/

		// find all email addresses embedded in the content and encrypt them via callback function encrypt_emails

		$content = preg_replace_callback($pattern, 'encrypt_emails', $content);

		return $content;

	}

}

// function to encrypt mailto links before beeing displayed at the frontend

if (!function_exists('encrypt_emails')) {

	function encrypt_emails($match) { 

		// get the mailer settings from the global variable defined in /wb/index.php

		global $mail_filter_settings;

		// check if there is anything to do

		if(!isset($mail_filter_settings['email_filter']) || $mail_filter_settings['email_filter'] !=='1' ||

			!isset($mail_filter_settings['mailto_filter']) || !isset($mail_filter_settings['at_replacement']) || 

			!isset($mail_filter_settings['dot_replacement'])) {

			return $match[0];

		}

		// work out replacements

		$at_replace = strip_tags($mail_filter_settings['at_replacement']);

		$dot_replace = strip_tags($mail_filter_settings['dot_replacement']);

		// check if extracted email address is mailto or text ($match[0] contains entire regexp pattern)

		if (strpos($match[0], "mailto:") > 0) {

			// mailto email

			// do we need to consider mailto links

			if($mail_filter_settings['mailto_filter'] !='1') {

				// do not touch mailto links

				return $match[0];

			}

			// email sub parts: [<a href="mailto:] [name@domain.com] [?subject=blubb&Body=text">] [Mail description</a>]

			$email_href			= $match[1];	// a href part

			$email_address		= $match[2];	// email address

			$email_options 	= $match[3];	// optional: subject or body text for mail clients

			$email_link_text 	= $match[4];	// optional: mail description

			// do some cleaning

			$email_options 	= str_replace("\">", "", $email_options);					// strip off '">'

			$email_link_text 	= str_replace("</a>", "", trim($email_link_text));		// strip off closing </a>

			// make sure that all emails have a description

			if(strlen($email_link_text) == 0 ) {

				$email_link_text = $email_address;

			}

			// replace "@" and "." within top level domain (TLD) if link text is a valid email address

			if(preg_match('#\w[\w|\.|\-]+@\w[\w|\.|\-]+\.[a-zA-Z]{2,}#i', $email_link_text, $email)) {

				$email_link_text = str_replace("@", $at_replace, $email_address);		// replace @

				// remove "." from top level domain (TLD) part

				if (preg_match('#\.[a-zA-Z]{2,}$#im', $email_link_text, $tld) !==0) {

					$tld_replace =  str_replace(".", $dot_replace, $tld[0]);

					$email_link_text = str_replace($tld[0], $tld_replace, $email_link_text);				// replace . in email TLD part

				}

			}

			//////////////////////////////////////////////////////////////////////////////////////////////////////////////

			// encrypt the email address

			//////////////////////////////////////////////////////////////////////////////////////////////////////////////

			// create random encryption key

			mt_srand((double)microtime()*1000000);			// initialize the randomizer (PHP < 4.2.0)

			$char_shift = mt_rand(1, 5);						// shift:=1; a->b, shift:=5; a-->f

			$decryption_key = chr($char_shift+97);			// ASCII a:=97

			// prepare mailto string for encryption (mail protocol, decryption key, mail address)

			$email_address = "mailto:" .$decryption_key .$email_address;

			// encrypt email address by shifting characters

		  	$encrypted_email = "";

			for($i=0; $i<strlen($email_address); $i++) {

				$encrypted_email .= chr(ord($email_address[$i]) + $char_shift);

			}

			$encrypted_email[7] = $decryption_key;			// replace first character after mailto: with decryption key 

			$encrypted_email = rawurlencode($encrypted_email);

			// return encrypted javascript mailto link

			$mailto_link  = "<a href=\"javascript:mdcr('";		// a href part with javascript function to decrypt the email address

			$mailto_link .= "$encrypted_email')\">";				// add encrypted email address as paramter to JS function mdcr

			$mailto_link .= $email_link_text ."</a>";				// add email link text and closing </a> tag

			return $mailto_link;

		} else {

			// text email (e.g. name@domain.com)

			$match[0] = str_replace("@", $at_replace, $match[0]);		// replace @

			// remove "." from top level domain (TLD) part

			if (preg_match('#\.[a-zA-Z]{2,}$#im', $match[0], $tld) !==0) {

				$tld_replace =  str_replace(".", $dot_replace, $tld[0]);

				return str_replace($tld[0], $tld_replace, $match[0]);							// replace . in email TLD part

			}

		}

	}

}

?>