function searchHighlight(&$content)
{
$pattern = '/[?&](q|as_q|as_epq|as_oq|query|search)=/';
if (!isset($_SERVER['HTTP_REFERER']) && isset($_SERVER['QUERY_STRING'])) {
$_SERVER['HTTP_REFERER'] = $_SERVER['REQUEST_URI'];
}
if (isset($_SERVER['HTTP_REFERER']) && preg_match($pattern, $_SERVER['HTTP_REFERER'])) {
// add JS to the header
register_filter_js(CAT_URL . '/modules/blackcatFilter/js/highlight.js');
// add onload
register_filter_onload('highlighter.highlight()');
}
}
/**
* obfuscates eMail addresses (links with 'href="mailto:..."') by using
* Base64 Encoding and ROT13 in combination; this will need JavaScript for
* de-obfuscation on the client side!
*
* @access public
* @param string &$content - page content to parse
* @return void edits $content
**/
function obfuscateEmail(&$content)
{
$dom = new DOMDocument();
libxml_use_internal_errors(true);
@$dom->loadHTML($content);
$x = new DOMXPath($dom);
foreach ($x->query("//a") as $node) {
if (preg_match('~^mailto:(.*)~i', $node->getAttribute("href"), $match)) {
$obfuscated = obfuscate($match[1]);
$content = str_replace($match[0], 'javascript:' . $obfuscated, $content);
// replace any other occurance
$content = str_replace($match[1], '<script type="text/javascript">document.write(' . $obfuscated . ');</script>', $content);
}
}
// match any other occurances of email addresses
preg_match_all('/\\b([A-Za-z0-9._%-]+@(?:[A-Za-z0-9-]+\\.)+[A-Za-z]{2,4})\\b/D', $content, $matches, PREG_SET_ORDER);
if (count($matches)) {
foreach ($matches as $match) {
$content = str_replace($match[1], '<script type="text/javascript">document.write(' . obfuscate($match[1]) . ');</script>', $content);
}
}
// add JS to the header
register_filter_js(CAT_URL . '/modules/blackcatFilter/js/obfuscateEmail.js');
}
