/**
* Converts WYSIWYG editor HTML back to BB code
*
* @param string $messageTextHtml HTML to convert
* @param XenForo_Input $input
* @param integer $htmlCharacterLimit Max length of HTML before processing; defaults to 4 * message length option
*
* @return string BB code input
*/
public function convertEditorHtmlToBbCode($messageTextHtml, XenForo_Input $input, $htmlCharacterLimit = -1)
{
if ($htmlCharacterLimit < 0) {
$htmlCharacterLimit = 4 * XenForo_Application::get('options')->messageMaxLength;
// quadruple the limit as HTML can be a lot more verbose
}
if ($htmlCharacterLimit && utf8_strlen($messageTextHtml) > $htmlCharacterLimit) {
throw new XenForo_Exception(new XenForo_Phrase('submitted_message_is_too_long_to_be_processed'), true);
}
$options = array();
$requestPaths = XenForo_Application::get('requestPaths');
$options['baseUrl'] = $requestPaths['fullBasePath'];
$relativeResolver = $input->filterSingle('_xfRelativeResolver', XenForo_Input::STRING);
if ($relativeResolver && isset($_SERVER['HTTP_USER_AGENT'])) {
if (preg_match('#Firefox/([0-9]+)\\.([0-9]+)\\.([0-9]+)#i', $_SERVER['HTTP_USER_AGENT'], $match)) {
// FF versions sometime before 3.6.12 have an issue with respecting the base tag of the editor,
// 3.6.8 is a known version that has problems
$useResolver = $match[1] <= 3 && $match[2] <= 6 && $match[3] <= 8;
} else {
$useResolver = false;
}
if ($useResolver) {
// take off query string and then up to the last directory
$relativeResolver = preg_replace('/\\?.*$/', '', $relativeResolver);
$relativeResolver = preg_replace('#/[^/]+$#', '', $relativeResolver);
$options['baseUrl'] = $relativeResolver;
}
}
$rendered = XenForo_Html_Renderer_BbCode::renderFromHtml($messageTextHtml, $options);
return trim(XenForo_Input::cleanString($rendered));
}
/**
* Attempts to read HTML that has been selected from XenForo messages,
* and turn it back into its source BB code.
*
* @param $html
*
* @return string
*/
public function getBbCodeFromSelectionHtml($html)
{
// attempt to parse the selected HTML into BB code
$html = trim(strip_tags($html, '<b><i><u><a><img><span><ul><ol><li><pre><code><br>'));
// handle PHP/CODE/HTML output and turn it back into BB code
$html = preg_replace_callback('/<(pre|code) data-type="(\\w+)">(.*)<\\/\\1>/siU', array($this, '_bbCodeTagsHtmlToBbCode'), $html);
$html = XenForo_Html_Renderer_BbCode::renderFromHtml($html);
return trim(XenForo_Input::cleanString($html));
}
/**
* Fetches a remote image, stores it in the file system and records it in the database
*
* @param string $url
* @param array|null $image
*
* @return array
*/
protected function _fetchAndCacheImage($url, array $image = null)
{
$urlHash = md5($url);
$time = XenForo_Application::$time;
if (!$image || empty($image['image_id'])) {
$image = array('url' => $url, 'url_hash' => $urlHash, 'fetch_date' => $time, 'file_size' => 0, 'file_name' => '', 'mime_type' => '', 'views' => 0, 'first_request_date' => $time, 'last_request_date' => $time, 'pruned' => 1, 'failed_date' => 0, 'fail_count' => 0);
}
$image['is_processing'] = time();
// intentionally time() as we might have slept
$db = $this->_getDb();
if (empty($image['image_id'])) {
try {
$db->insert('xf_image_proxy', $image);
$image['image_id'] = $db->lastInsertId();
} catch (Exception $e) {
$image['image_id'] = 0;
$image['is_processing'] = 0;
$image['failed_date'] = time();
$image['fail_count'] = 1;
return $image;
}
} else {
$db->query("\n\t\t\t\tUPDATE xf_image_proxy\n\t\t\t\tSET is_processing = ?\n\t\t\t\tWHERE image_id = ?\n\t\t\t", array($image['is_processing'], $image['image_id']));
}
$results = $this->_fetchImageForProxy($url);
$requestFailed = $results['failed'];
$streamFile = $results['tempFile'];
$fileName = $results['fileName'];
$mimeType = $results['mimeType'];
$fileSize = $results['fileSize'];
if (!$requestFailed) {
$filePath = $this->getImagePath($image);
$dirName = dirname($filePath);
@unlink($filePath);
if (XenForo_Helper_File::createDirectory($dirName, true) && XenForo_Helper_File::safeRename($streamFile, $filePath)) {
// ensure the filename fits -- if it's too long, take off from the beginning to keep extension
if (!preg_match('/./u', $fileName)) {
$fileName = preg_replace('/[\\x80-\\xFF]/', '?', $fileName);
}
$fileName = XenForo_Input::cleanString($fileName);
$length = utf8_strlen($fileName);
if ($length > 250) {
$fileName = utf8_substr($fileName, $length - 250);
}
$data = array('fetch_date' => time(), 'file_size' => $fileSize, 'file_name' => $fileName, 'mime_type' => $mimeType, 'pruned' => 0, 'is_processing' => 0, 'failed_date' => 0, 'fail_count' => 0);
$image = array_merge($image, $data);
$db->update('xf_image_proxy', $data, 'image_id = ' . $db->quote($image['image_id']));
}
}
@unlink($streamFile);
if ($requestFailed) {
$data = array('is_processing' => 0, 'failed_date' => time(), 'fail_count' => $image['fail_count'] + 1);
$image = array_merge($image, $data);
$db->update('xf_image_proxy', $data, 'image_id = ' . $db->quote($image['image_id']));
}
return $image;
}
protected function _postRender($text)
{
$text = preg_replace('#\\[img\\]\\[url\\]([^\\[]+)\\[/url\\]\\[/img\\]#i', '[IMG]$1[/IMG]', $text);
do {
$newText = preg_replace('#\\[/(b|i|u|s|left|center|right|indent)\\]([\\r\\n]*)\\[\\1\\]#i', '\\2', $text);
if ($newText === null || $newText == $text) {
break;
}
$text = $newText;
} while (true);
do {
$newText = preg_replace('#(\\[(font|color|size|url|email)=[^\\]]*\\])((?:(?>[^\\[]+?)|\\[(?!\\2))*)\\[/\\2\\]([\\r\\n]*)\\1#siU', '\\1\\3\\4', $text);
if ($newText === null || $newText == $text) {
break;
}
$text = $newText;
} while (true);
$text = XenForo_Input::cleanString($text);
return trim($text);
}
/**
* Decodes HTML entities in a string. Note that non-breaking spaces are treated as normal spaces.
*
* @param string $string
*
* @return string Decoded string
*/
public function decodeEntities($string)
{
return XenForo_Input::cleanString(html_entity_decode($string, ENT_COMPAT, 'utf-8'));
}
protected function _getUrlTitle($url)
{
$requestUrl = $url;
$requestUrl = preg_replace('/#.*$/', '', $requestUrl);
if (preg_match_all('/[^A-Za-z0-9._~:\\/?#\\[\\]@!$&\'()*+,;=%-]/', $requestUrl, $matches)) {
foreach ($matches[0] as $match) {
$requestUrl = str_replace($match[0], '%' . strtoupper(dechex(ord($match[0]))), $requestUrl);
}
}
$requestUrl = preg_replace('/%(?![a-fA-F0-9]{2})/', '%25', $requestUrl);
// ensure the URL is valid and isn't trying to load something locally
$parts = @parse_url($requestUrl);
if (!$parts || empty($parts['scheme']) || !preg_match('/^https?$/i', $parts['scheme']) || empty($parts['host']) || preg_match('#^(127\\.|192\\.168\\.|10\\.|172\\.(1[6789]|2|3[01])|169\\.254\\.|0\\.0\\.0\\.0)#', $parts['host']) || preg_match('#^localhost(\\.localdomain)?$#i', $parts['host'])) {
return false;
}
$urlHash = md5($url);
XenForo_HttpStream::register();
XenForo_HttpStream::setMaxSize(50 * 1024);
// 50KB
$streamUri = 'xf-http://' . $urlHash . '-' . uniqid();
$this->_streamFile = XenForo_HttpStream::getTempFile($streamUri);
try {
$response = XenForo_Helper_Http::getClient($requestUrl, array('output_stream' => $streamUri, 'timeout' => 3, 'httpversion' => Zend_Http_Client::HTTP_0))->setHeaders('Accept-encoding', 'identity')->setHeaders('Accept', 'text/html,*/*;q=0.8')->request('GET');
if (!$response->isSuccessful()) {
return false;
}
$headers = $response->getHeaders();
if (!$headers) {
return false;
}
$charset = false;
if (isset($headers['Content-type'])) {
$parts = explode(';', is_array($headers['Content-type']) ? end($headers['Content-type']) : $headers['Content-type'], 2);
$type = trim($parts[0]);
if ($type != 'text/html') {
return false;
}
if (isset($parts[1]) && preg_match('/charset=([-a-z0-9_]+)/i', trim($parts[1]), $match)) {
$charset = $match[1];
}
}
try {
$body = $response->getBody();
} catch (Exception $e) {
// some servers may ignore our request for no gzip and this can fail
$body = '';
}
$title = '';
if (preg_match('#<meta[^>]+property="(og:|twitter:)title"[^>]*content="([^">]+)"#siU', $body, $match)) {
$title = isset($match[2]) ? $match[2] : '';
}
if (!$title && preg_match('#<title[^>]*>(.*)</title>#siU', $body, $match)) {
$title = $match[1];
}
if (!$title) {
return false;
}
if (!$charset) {
preg_match('/charset=([^;"\\s]+|"[^;"]+")/i', $body, $contentTypeMatch);
if (isset($contentTypeMatch[1])) {
$charset = trim($contentTypeMatch[1], " \t\n\r\v\"");
}
if (!$charset) {
$charset = 'windows-1252';
}
}
$title = XenForo_Input::cleanString($this->_toUtf8($title, $charset, true));
if (defined('ENT_HTML5')) {
$title = html_entity_decode($title, ENT_QUOTES | ENT_HTML5, 'UTF-8');
} else {
$title = html_entity_decode($title, ENT_QUOTES, 'UTF-8');
}
$title = utf8_unhtml($title);
$title = str_replace("\n", ' ', trim($title));
if (!strlen($title)) {
return false;
}
$formatter = $this->_getBbCodeFilterer();
$parser = $this->_getBbCodeParser();
$parser->render($title);
if ($formatter->getSmilieTally() || $formatter->getTotalTagTally()) {
$title = "[PLAIN]{$title}[/PLAIN]";
}
return $title;
} catch (Zend_Http_Client_Exception $e) {
} catch (Zend_Uri_Exception $e) {
} catch (Exception $e) {
XenForo_Error::logException($e, false, "Error linking URL '{$url}': ");
}
return false;
}
