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* @license GNU General Public License version 2 or later; see LICENSE.txt */ defined('_JEXEC') or die; use Joomla\CMS\HTML\HTMLHelper; use Joomla\CMS\Plugin\CMSPlugin; use Joomla\String\StringHelper; /** * Email cloack plugin class. * * @since 1.5 */ class PlgContentEmailcloak extends CMSPlugin { /** * The Application object * * @var JApplicationSite * @since 3.9.0 */ protected $app; /** * Plugin that cloaks all emails in content from spambots via Javascript. * * @param string $context The context of the content being passed to the plugin. * @param mixed &$row An object with a "text" property or the string to be cloaked. * @param mixed &$params Additional parameters. See {@see PlgContentEmailcloak()}. * @param integer $page Optional page number. Unused. Defaults to zero. * * @return void */ public function onContentPrepare($context, &$row, &$params, $page = 0) { if ($this->app->isClient('api')) { return true; } // Don't run this plugin when the content is being indexed if ($context === 'com_finder.indexer') { return; } if (is_object($row)) { $this->_cloak($row->text, $params); return; } $this->_cloak($row, $params); } /** * Generate a search pattern based on link and text. * * @param string $link The target of an email link. * @param string $text The text enclosed by the link. * * @return string A regular expression that matches a link containing the parameters. */ protected function _getPattern($link, $text) { $pattern = '~(?:
]*)href\s*=\s*"mailto:' . $link . '"([^>]*))>' . $text . '
~i'; return $pattern; } /** * Cloak all emails in text from spambots via Javascript. * * @param string &$text The string to be cloaked. * @param mixed &$params Additional parameters. Parameter "mode" (integer, default 1) * replaces addresses with "mailto:" links if nonzero. * * @return void */ protected function _cloak(&$text, &$params) { /* * Check for presence of {emailcloak=off} which is explicits disables this * bot for the item. */ if (StringHelper::strpos($text, '{emailcloak=off}') !== false) { $text = StringHelper::str_ireplace('{emailcloak=off}', '', $text); return; } // Simple performance check to determine whether bot should process further. if (StringHelper::strpos($text, '@') === false) { return; } $mode = (int) $this->params->def('mode', 1); $mode = $mode === 1; // Example: any@example.org $searchEmail = '([\w\.\'\-\+]+\@(?:[a-z0-9\.\-]+\.)+(?:[a-zA-Z0-9\-]{2,10}))'; // Example: any@example.org?subject=anyText $searchEmailLink = $searchEmail . '([?&][\x20-\x7f][^"<>]+)'; // Any Text $searchText = '((?:[\x20-\x7f]|[\xA1-\xFF]|[\xC2-\xDF][\x80-\xBF]|[\xE0-\xEF][\x80-\xBF]{2}|[\xF0-\xF4][\x80-\xBF]{3})[^<>]+)'; // Any Image link $searchImage = '(
]+>)'; // Any Text with
]+>|
|
|
]+>|
)' . $searchText . '(
|
|
)'; // Any address with
]+>|
|
|
]+>|
)' . $searchEmail . '(
|
|
)'; /* * Search and fix derivatives of link code
email@example.org
. This happens when inserting an email in TinyMCE, cancelling its suggestion to add * the mailto: prefix... */ $pattern = $this->_getPattern($searchEmail, $searchEmail); $pattern = str_replace('"mailto:', '"http://mce_host([\x20-\x7f][^<>]+/)', $pattern); while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE)) { $mail = $regs[3][0]; $mailText = $regs[5][0]; // Check to see if mail text is different from mail addy $replacement = HTMLHelper::_('email.cloak', $mail, $mode, $mailText); // Replace the found address with the js cloaked email $text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0])); } /* * Search and fix derivatives of link code
anytext
. This happens when inserting an email in TinyMCE, cancelling its suggestion to add * the mailto: prefix... */ $pattern = $this->_getPattern($searchEmail, $searchText); $pattern = str_replace('"mailto:', '"http://mce_host([\x20-\x7f][^<>]+/)', $pattern); while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE)) { $mail = $regs[3][0]; $mailText = $regs[5][0]; // Check to see if mail text is different from mail addy $replacement = HTMLHelper::_('email.cloak', $mail, $mode, $mailText, 0); // Replace the found address with the js cloaked email $text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0])); } /* * Search for derivatives of link code
email@example.org
*/ $pattern = $this->_getPattern($searchEmail, $searchEmail); while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE)) { $mail = $regs[2][0]; $mailText = $regs[4][0]; // Check to see if mail text is different from mail addy $replacement = HTMLHelper::_('email.cloak', $mail, $mode, $mailText); // Replace the found address with the js cloaked email $text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0])); } /* * Search for derivatives of link code
email@amail.com
*/ $pattern = $this->_getPattern($searchEmail, $searchEmailSpan); while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE)) { $mail = $regs[2][0]; $mailText = $regs[4][0] . $regs[5][0] . $regs[6][0]; // Check to see if mail text is different from mail addy $replacement = HTMLHelper::_('email.cloak', $mail, $mode, $mailText); // Replace the found address with the js cloaked email $text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0])); } /* * Search for derivatives of link code
*
anytext
*/ $pattern = $this->_getPattern($searchEmail, $searchTextSpan); while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE)) { $mail = $regs[2][0]; $mailText = $regs[4][0] . $regs[5][0] . $regs[6][0]; $replacement = HTMLHelper::_('email.cloak', $mail, $mode, $mailText, 0); // Replace the found address with the js cloaked email $text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0])); } /* * Search for derivatives of link code
* anytext
*/ $pattern = $this->_getPattern($searchEmail, $searchText); while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE)) { $mail = $regs[2][0]; $mailText = $regs[4][0]; $replacement = HTMLHelper::_('email.cloak', $mail, $mode, $mailText, 0); // Replace the found address with the js cloaked email $text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0])); } /* * Search for derivatives of link code
*
*/ $pattern = $this->_getPattern($searchEmail, $searchImage); while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE)) { $mail = $regs[2][0]; $mailText = $regs[4][0]; $replacement = HTMLHelper::_('email.cloak', $mail, $mode, $mailText, 0); // Replace the found address with the js cloaked email $text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0])); } /* * Search for derivatives of link code
*
email@example.org
*/ $pattern = $this->_getPattern($searchEmail, $searchImage . $searchEmail); while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE)) { $mail = $regs[2][0]; $mailText = $regs[4][0] . $regs[5][0]; $replacement = HTMLHelper::_('email.cloak', $mail, $mode, $mailText); // Replace the found address with the js cloaked email $text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0])); } /* * Search for derivatives of link code
*
any text
*/ $pattern = $this->_getPattern($searchEmail, $searchImage . $searchText); while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE)) { $mail = $regs[2][0]; $mailText = $regs[4][0] . $regs[5][0]; $replacement = HTMLHelper::_('email.cloak', $mail, $mode, $mailText, 0); // Replace the found address with the js cloaked email $text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0])); } /* * Search for derivatives of link code
email@example.org
*/ $pattern = $this->_getPattern($searchEmailLink, $searchEmail); while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE)) { $mail = $regs[2][0] . $regs[3][0]; $mailText = $regs[5][0]; // Needed for handling of Body parameter $mail = str_replace('&', '&', $mail); // Check to see if mail text is different from mail addy $replacement = HTMLHelper::_('email.cloak', $mail, $mode, $mailText); // Replace the found address with the js cloaked email $text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0])); } /* * Search for derivatives of link code
anytext
*/ $pattern = $this->_getPattern($searchEmailLink, $searchText); while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE)) { $mail = $regs[2][0] . $regs[3][0]; $mailText = $regs[5][0]; // Needed for handling of Body parameter $mail = str_replace('&', '&', $mail); $replacement = HTMLHelper::_('email.cloak', $mail, $mode, $mailText, 0); // Replace the found address with the js cloaked email $text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0])); } /* * Search for derivatives of link code
email@amail.com
*/ $pattern = $this->_getPattern($searchEmailLink, $searchEmailSpan); while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE)) { $mail = $regs[2][0] . $regs[3][0]; $mailText = $regs[5][0] . $regs[6][0] . $regs[7][0]; // Check to see if mail text is different from mail addy $replacement = HTMLHelper::_('email.cloak', $mail, $mode, $mailText); // Replace the found address with the js cloaked email $text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0])); } /* * Search for derivatives of link code
*
anytext
*/ $pattern = $this->_getPattern($searchEmailLink, $searchTextSpan); while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE)) { $mail = $regs[2][0] . $regs[3][0]; $mailText = $regs[5][0] . $regs[6][0] . $regs[7][0]; $replacement = HTMLHelper::_('email.cloak', $mail, $mode, $mailText, 0); // Replace the found address with the js cloaked email $text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0])); } /* * Search for derivatives of link code *
*/ $pattern = $this->_getPattern($searchEmailLink, $searchImage); while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE)) { $mail = $regs[1][0] . $regs[2][0] . $regs[3][0]; $mailText = $regs[5][0]; // Needed for handling of Body parameter $mail = str_replace('&', '&', $mail); // Check to see if mail text is different from mail addy $replacement = HTMLHelper::_('email.cloak', $mail, $mode, $mailText, 0); // Replace the found address with the js cloaked email $text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0])); } /* * Search for derivatives of link code *
email@amail.com
*/ $pattern = $this->_getPattern($searchEmailLink, $searchImage . $searchEmail); while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE)) { $mail = $regs[1][0] . $regs[2][0] . $regs[3][0]; $mailText = $regs[4][0] . $regs[5][0] . $regs[6][0]; // Needed for handling of Body parameter $mail = str_replace('&', '&', $mail); // Check to see if mail text is different from mail addy $replacement = HTMLHelper::_('email.cloak', $mail, $mode, $mailText); // Replace the found address with the js cloaked email $text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0])); } /* * Search for derivatives of link code *
any text
*/ $pattern = $this->_getPattern($searchEmailLink, $searchImage . $searchText); while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE)) { $mail = $regs[1][0] . $regs[2][0] . $regs[3][0]; $mailText = $regs[4][0] . $regs[5][0] . $regs[6][0]; // Needed for handling of Body parameter $mail = str_replace('&', '&', $mail); // Check to see if mail text is different from mail addy $replacement = HTMLHelper::_('email.cloak', $mail, $mode, $mailText, 0); // Replace the found address with the js cloaked email $text = substr_replace($text, $replacement, $regs[0][1], strlen($regs[0][0])); } /* * Search for plain text email addresses, such as email@example.org but not within HTML tags: *
or
* The '<[^<]*>(*SKIP)(*F)|' trick is used to exclude this kind of occurrences */ $pattern = '~<[^<]*>(*SKIP)(*F)|' . $searchEmail . '~i'; while (preg_match($pattern, $text, $regs, PREG_OFFSET_CAPTURE)) { $mail = $regs[1][0]; $replacement = HTMLHelper::_('email.cloak', $mail, $mode); // Replace the found address with the js cloaked email $text = substr_replace($text, $replacement, $regs[1][1], strlen($mail)); } } }