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plugins/content/emailcloak/emailcloak.php
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299
plugins/content/emailcloak/emailcloak.php
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<?php
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/**
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* @package Joomla.Plugin
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* @subpackage Content.emailcloak
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*
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* @copyright Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
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* @license GNU General Public License version 2 or later; see LICENSE.txt
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*/
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defined('_JEXEC') or die;
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/**
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* Email cloack plugin class.
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*
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* @package Joomla.Plugin
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* @subpackage Content.emailcloak
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* @since 1.5
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*/
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class PlgContentEmailcloak extends JPlugin
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{
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/**
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* Plugin that cloaks all emails in content from spambots via Javascript.
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*
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* @param string $context The context of the content being passed to the plugin.
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* @param mixed &$row An object with a "text" property or the string to be cloaked.
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* @param mixed &$params Additional parameters. See {@see PlgContentEmailcloak()}.
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* @param integer $page Optional page number. Unused. Defaults to zero.
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*
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* @return boolean True on success.
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*/
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public function onContentPrepare($context, &$row, &$params, $page = 0)
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{
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// Don't run this plugin when the content is being indexed
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if ($context == 'com_finder.indexer')
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{
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return true;
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}
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if (is_object($row))
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{
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return $this->_cloak($row->text, $params);
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}
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return $this->_cloak($row, $params);
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}
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/**
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* Generate a search pattern based on link and text.
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*
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* @param string $link The target of an email link.
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* @param string $text The text enclosed by the link.
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*
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* @return string A regular expression that matches a link containing the parameters.
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*/
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protected function _getPattern ($link, $text)
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{
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$pattern = '~(?:<a ([\w "\'=\@\.\-:;]*)href\s*=\s*"mailto:'
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. $link . '"([\w "\'=\@\.\-:;]*))>' . $text . '</a>~i';
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return $pattern;
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}
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/**
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* Adds an attributes to the js cloaked email.
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*
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* @param string $jsEmail Js cloaked email.
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* @param string $before Attributes before email.
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* @param string $after Attributes after email.
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*
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* @return string Js cloaked email with attributes.
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*/
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protected function _addAttributesToEmail($jsEmail, $before, $after)
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{
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if ($before !== "")
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{
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$before = str_replace("'", "\'", $before);
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$jsEmail = str_replace("document.write('<a '", "document.write('<a {$before}'", $jsEmail);
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}
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if ($after !== "")
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{
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$after = str_replace("'", "\'", $after);
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$jsEmail = str_replace("'\'>');", "'\'{$after}>');", $jsEmail);
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}
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return $jsEmail;
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}
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/**
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* Cloak all emails in text from spambots via Javascript.
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*
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* @param string &$text The string to be cloaked.
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* @param mixed &$params Additional parameters. Parameter "mode" (integer, default 1)
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* replaces addresses with "mailto:" links if nonzero.
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*
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* @return boolean True on success.
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*/
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protected function _cloak(&$text, &$params)
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{
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/*
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* Check for presence of {emailcloak=off} which is explicits disables this
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* bot for the item.
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*/
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if (JString::strpos($text, '{emailcloak=off}') !== false)
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{
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$text = JString::str_ireplace('{emailcloak=off}', '', $text);
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return true;
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}
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// Simple performance check to determine whether bot should process further.
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if (JString::strpos($text, '@') === false)
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{
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return true;
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}
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$mode = $this->params->def('mode', 1);
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// any@email.address.com
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$searchEmail = '([\w\.\-]+\@(?:[a-z0-9\.\-]+\.)+(?:[a-zA-Z0-9\-]{2,10}))';
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// any@email.address.com?subject=anyText
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$searchEmailLink = $searchEmail . '([?&][\x20-\x7f][^"<>]+)';
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// Any Text
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$searchText = '([\x20-\x7f][^<>]+)';
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// Any Image link
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$searchImage = "(<img[^>]+>)";
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/*
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* Search and fix derivatives of link code <a href="http://mce_host/ourdirectory/email@amail.com"
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* >email@email.com</a>. This happens when inserting an email in TinyMCE, cancelling its suggestion to add
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* the mailto: prefix...
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*/
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$pattern = $this->_getPattern($searchEmail, $searchEmail);
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$pattern = str_replace('"mailto:', '"http://mce_host([\x20-\x7f][^<>]+/)', $pattern);
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while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE))
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{
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$mail = $regs[3][0];
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$mailText = $regs[5][0];
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// Check to see if mail text is different from mail addy
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$replacement = JHtml::_('email.cloak', $mail, $mode, $mailText);
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// Ensure that attributes is not stripped out by email cloaking
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$replacement = $this->_addAttributesToEmail($replacement, $regs[1][0], $regs[4][0]);
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// Replace the found address with the js cloaked email
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$text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0]));
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}
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/*
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* Search and fix derivatives of link code <a href="http://mce_host/ourdirectory/email@amail.com"
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* >anytext</a>. This happens when inserting an email in TinyMCE, cancelling its suggestion to add
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* the mailto: prefix...
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*/
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$pattern = $this->_getPattern($searchEmail, $searchText);
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$pattern = str_replace('"mailto:', '"http://mce_host([\x20-\x7f][^<>]+/)', $pattern);
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while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE))
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{
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$mail = $regs[3][0];
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$mailText = $regs[5][0];
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// Check to see if mail text is different from mail addy
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$replacement = JHtml::_('email.cloak', $mail, $mode, $mailText, 0);
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// Ensure that attributes is not stripped out by email cloaking
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$replacement = $this->_addAttributesToEmail($replacement, $regs[1][0], $regs[4][0]);
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// Replace the found address with the js cloaked email
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$text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0]));
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}
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/*
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* Search for derivatives of link code <a href="mailto:email@amail.com"
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* >email@amail.com</a>
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*/
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$pattern = $this->_getPattern($searchEmail, $searchEmail);
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while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE))
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{
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$mail = $regs[2][0];
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$mailText = $regs[4][0];
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// Check to see if mail text is different from mail addy
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$replacement = JHtml::_('email.cloak', $mail, $mode, $mailText);
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// Ensure that attributes is not stripped out by email cloaking
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$replacement = $this->_addAttributesToEmail($replacement, $regs[1][0], $regs[3][0]);
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// Replace the found address with the js cloaked email
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$text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0]));
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}
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/*
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* Search for derivatives of link code <a href="mailto:email@amail.com">
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* anytext</a>
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*/
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$pattern = $this->_getPattern($searchEmail, $searchText);
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while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE))
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{
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$mail = $regs[2][0];
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$mailText = $regs[4][0];
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$replacement = JHtml::_('email.cloak', $mail, $mode, $mailText, 0);
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// Ensure that attributes is not stripped out by email cloaking
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$replacement = $this->_addAttributesToEmail($replacement, $regs[1][0], $regs[3][0]);
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// Replace the found address with the js cloaked email
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$text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0]));
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}
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/*
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* Search for derivatives of link code <a href="mailto:email@amail.com">
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* <img anything></a>
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*/
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$pattern = $this->_getPattern($searchEmail, $searchImage);
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while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE))
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{
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$mail = $regs[2][0];
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$mailText = $regs[4][0];
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$replacement = JHtml::_('email.cloak', $mail, $mode, $mailText, 0);
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// Ensure that attributes is not stripped out by email cloaking
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$replacement = $this->_addAttributesToEmail($replacement, $regs[1][0], $regs[3][0]);
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// Replace the found address with the js cloaked email
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$text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0]));
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}
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/*
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* Search for derivatives of link code <a href="mailto:email@amail.com?
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* subject=Text">email@amail.com</a>
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*/
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$pattern = $this->_getPattern($searchEmailLink, $searchEmail);
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while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE))
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{
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$mail = $regs[2][0] . $regs[3][0];
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$mailText = $regs[5][0];
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// Needed for handling of Body parameter
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$mail = str_replace('&', '&', $mail);
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// Check to see if mail text is different from mail addy
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$replacement = JHtml::_('email.cloak', $mail, $mode, $mailText);
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// Ensure that attributes is not stripped out by email cloaking
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$replacement = $this->_addAttributesToEmail($replacement, $regs[1][0], $regs[4][0]);
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// Replace the found address with the js cloaked email
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$text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0]));
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}
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/*
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* Search for derivatives of link code <a href="mailto:email@amail.com?
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* subject=Text">anytext</a>
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*/
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$pattern = $this->_getPattern($searchEmailLink, $searchText);
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while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE))
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{
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$mail = $regs[2][0] . $regs[3][0];
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$mailText = $regs[5][0];
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// Needed for handling of Body parameter
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$mail = str_replace('&', '&', $mail);
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$replacement = JHtml::_('email.cloak', $mail, $mode, $mailText, 0);
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// Ensure that attributes is not stripped out by email cloaking
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$replacement = $this->_addAttributesToEmail($replacement, $regs[1][0], $regs[4][0]);
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// Replace the found address with the js cloaked email
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$text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0]));
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}
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// Search for plain text email@amail.com
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$pattern = '~' . $searchEmail . '([^a-z0-9]|$)~i';
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while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE))
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{
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$mail = $regs[1][0];
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$replacement = JHtml::_('email.cloak', $mail, $mode);
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// Replace the found address with the js cloaked email
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$text = substr_replace($text, $replacement, $regs[1][1], strlen($mail));
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}
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return true;
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}
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}
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36
plugins/content/emailcloak/emailcloak.xml
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36
plugins/content/emailcloak/emailcloak.xml
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<?xml version="1.0" encoding="utf-8"?>
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<extension version="3.1" type="plugin" group="content">
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<name>plg_content_emailcloak</name>
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<author>Joomla! Project</author>
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<creationDate>November 2005</creationDate>
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<copyright>Copyright (C) 2005 - 2013 Open Source Matters. All rights reserved.</copyright>
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<license>GNU General Public License version 2 or later; see LICENSE.txt</license>
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<authorEmail>admin@joomla.org</authorEmail>
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<authorUrl>www.joomla.org</authorUrl>
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<version>3.0.0</version>
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<description>PLG_CONTENT_EMAILCLOAK_XML_DESCRIPTION</description>
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<files>
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<filename plugin="emailcloak">emailcloak.php</filename>
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<filename>index.html</filename>
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</files>
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<languages>
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<language tag="en-GB">en-GB.plg_content_emailcloak.ini</language>
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<language tag="en-GB">en-GB.plg_content_emailcloak.sys.ini</language>
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</languages>
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<config>
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<fields name="params">
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<fieldset name="basic">
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<field name="mode" type="list"
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default="1"
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description="PLG_CONTENT_EMAILCLOAK_MODE_DESC"
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label="PLG_CONTENT_EMAILCLOAK_MODE_LABEL"
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>
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<option value="0">PLG_CONTENT_EMAILCLOAK_NONLINKABLE</option>
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<option value="1">PLG_CONTENT_EMAILCLOAK_LINKABLE</option>
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</field>
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</fieldset>
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</fields>
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</config>
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</extension>
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1
plugins/content/emailcloak/index.html
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1
plugins/content/emailcloak/index.html
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@ -0,0 +1 @@
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<!DOCTYPE html><title></title>
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