/**
* Rolls back any changes made to the DB during the update process.
*
* @param $backupPath
*
* @return null
*/
public static function rollBackDatabaseChanges($backupPath)
{
$dbBackup = new DbBackup();
$fileName = $backupPath . '.sql';
$fullBackupPath = craft()->path->getDbBackupPath() . $fileName;
if (PathHelper::ensurePathIsContained($fileName)) {
$dbBackup->restore($fullBackupPath);
} else {
Craft::log('Someone tried to restore a database from outside of the Craft backups folder: ' . $fullBackupPath, LogLevel::Warning);
}
}
/**
* Sends a resource back to the browser.
*
* @param string $path
*
* @throws HttpException
* @return null
*/
public function sendResource($path)
{
if (PathHelper::ensurePathIsContained($path) === false) {
throw new HttpException(404);
}
$cachedPath = $this->getCachedResourcePath($path);
if ($cachedPath) {
if ($cachedPath == ':(') {
// 404
$realPath = false;
} else {
// We've got it already
$realPath = $cachedPath;
}
} else {
// We don't have a cache of the file system path, so let's get it
$realPath = $this->getResourcePath($path);
// Now cache it
$this->cacheResourcePath($path, $realPath);
}
if ($realPath === false || !IOHelper::fileExists($realPath)) {
throw new HttpException(404);
}
// If there is a timestamp and HTTP_IF_MODIFIED_SINCE exists, check the timestamp against requested file's last
// modified date. If the last modified date is less than the timestamp, return a 304 not modified and let the
// browser serve it from cache.
$timestamp = craft()->request->getParam($this->dateParam, null);
if ($timestamp !== null && array_key_exists('HTTP_IF_MODIFIED_SINCE', $_SERVER)) {
$requestDate = DateTime::createFromFormat('U', $timestamp);
$lastModifiedFileDate = IOHelper::getLastTimeModified($realPath);
if ($lastModifiedFileDate && $lastModifiedFileDate <= $requestDate) {
// Let the browser serve it from cache.
HeaderHelper::setHeader('HTTP/1.1 304 Not Modified');
craft()->end();
}
}
// Note that $content may be empty -- they could be requesting a blank text file or something. It doens't matter.
// No need to throw a 404.
$content = IOHelper::getFileContents($realPath);
// Normalize URLs in CSS files
$mimeType = IOHelper::getMimeTypeByExtension($realPath);
if (mb_strpos($mimeType, 'css') !== false) {
$content = preg_replace_callback('/(url\\(([\'"]?))(.+?)(\\2\\))/', array(&$this, '_normalizeCssUrl'), $content);
}
if (!craft()->config->get('useXSendFile')) {
$options['forceDownload'] = false;
if (craft()->request->getQuery($this->dateParam)) {
$options['cache'] = true;
}
craft()->request->sendFile($realPath, $content, $options);
} else {
craft()->request->xSendFile($realPath);
}
// You shall not pass.
craft()->end();
}
/**
* Ensures that a template name isn't null, and that it doesn't lead outside the template folder. Borrowed from
* {@link Twig_Loader_Filesystem}.
*
* @param string $name
*
* @throws \Twig_Error_Loader
*/
private function _validateTemplateName($name)
{
if (mb_strpos($name, "") !== false) {
throw new \Twig_Error_Loader(Craft::t('A template name cannot contain NUL bytes.'));
}
if (PathHelper::ensurePathIsContained($name) === false) {
throw new \Twig_Error_Loader(Craft::t('Looks like you try to load a template outside the template folder: {template}.', array('template' => $name)));
}
}
