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<?php
/**
* @package Joomla.Libraries
* @subpackage HTML
*
* @copyright Copyright (C) 2005 - 2015 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('JPATH_PLATFORM') or die;
/**
* Utility class for cloaking email addresses
*
* @since 1.5
*/
abstract class JHtmlEmail
{
/**
* Simple JavaScript email cloaker
*
* By default replaces an email with a mailto link with email cloaked
*
* @param string $mail The -mail address to cloak.
* @param boolean $mailto True if text and mailing address differ
* @param string $text Text for the link
* @param boolean $email True if text is an e-mail address
*
* @return string The cloaked email.
*
* @since 1.5
*/
public static function cloak($mail, $mailto = true, $text = '', $email = true)
{
// Convert mail
$mail = static::convertEncoding($mail);
// Split email by @ symbol
$mail = explode('@', $mail);
$mail_parts = explode('.', $mail[1]);
// Random number
$rand = rand(1, 100000);
$replacement = '<span id="cloak' . $rand . '">' . JText::_('JLIB_HTML_CLOAKING') . '</span>' . "<script type='text/javascript'>";
$replacement .= "\n //<!--";
$replacement .= "\n document.getElementById('cloak$rand').innerHTML = '';";
$replacement .= "\n var prefix = 'ma' + 'il' + 'to';";
$replacement .= "\n var path = 'hr' + 'ef' + '=';";
$replacement .= "\n var addy" . $rand . " = '" . @$mail[0] . "' + '@';";
$replacement .= "\n addy" . $rand . " = addy" . $rand . " + '" . implode("' + '.' + '", $mail_parts) . "';";
if ($mailto)
{
// Special handling when mail text is different from mail address
if ($text)
{
// Convert text - here is the right place
$text = static::convertEncoding($text);
if ($email)
{
// Split email by @ symbol
$text = explode('@', $text);
$text_parts = explode('.', $text[1]);
$replacement .= "\n var addy_text" . $rand . " = '" . @$text[0] . "' + '@' + '" . implode("' + '.' + '", @$text_parts)
. "';";
}
else
{
$replacement .= "\n var addy_text" . $rand . " = '" . $text . "';";
}
$replacement .= "\n document.getElementById('cloak$rand').innerHTML += '<a ' + path + '\'' + prefix + ':' + addy"
. $rand . " + '\'>'+addy_text" . $rand . "+'<\/a>';";
}
else
{
$replacement .= "\n document.getElementById('cloak$rand').innerHTML += '<a ' + path + '\'' + prefix + ':' + addy"
. $rand . " + '\'>' +addy" . $rand . "+'<\/a>';";
}
}
else
{
$replacement .= "\n document.getElementById('cloak$rand').innerHTML += addy" . $rand . ";";
}
$replacement .= "\n //-->";
$replacement .= "\n </script>";
return $replacement;
}
/**
* Convert encoded text
*
* @param string $text Text to convert
*
* @return string The converted text.
*
* @since 1.5
*/
protected static function convertEncoding($text)
{
$text = html_entity_decode($text);
// Replace vowels with character encoding
$text = str_replace('a', 'a', $text);
$text = str_replace('e', 'e', $text);
$text = str_replace('i', 'i', $text);
$text = str_replace('o', 'o', $text);
$text = str_replace('u', 'u', $text);
$text = htmlentities($text, ENT_QUOTES, 'UTF-8', false);
return $text;
}
}