/**
* Serves an icon
* Terminates the script and sends headers on error
* @return void
*/
public function serve()
{
if (headers_sent()) {
return;
}
if (!$this->url || !$this->handle || !$this->dir_guid || !$this->hmac) {
header("HTTP/1.1 400 Bad request");
exit;
}
$etag = md5($this->url . $this->handle . $this->ts);
if (isset($_SERVER['HTTP_IF_NONE_MATCH']) && trim($_SERVER['HTTP_IF_NONE_MATCH']) == "\"{$etag}\"") {
header("HTTP/1.1 304 Not Modified");
exit;
}
$this->openDbLink();
$values = $this->getDatalistValue(array('dataroot', '__site_secret__'));
$this->closeDbLink();
if (empty($values)) {
header("HTTP/1.1 404 Not Found");
exit;
}
$data_root = $values['dataroot'];
$key = $values['__site_secret__'];
$hmac = hash_hmac('sha256', $this->url . $this->handle, $key);
if ($this->hmac != $hmac) {
header("HTTP/1.1 403 Forbidden");
exit;
}
$locator = new EntityDirLocator($this->dir_guid);
$filename = $data_root . $locator->getPath() . 'scraper_cache/thumbs/' . md5($this->url) . '.' . $this->handle . '.jpg';
error_log($this->url);
error_log($filename);
if (!file_exists($filename)) {
header("HTTP/1.1 404 Not Found");
exit;
}
$filesize = filesize($filename);
header("Content-type: image/jpeg");
header('Expires: ' . gmdate('D, d M Y H:i:s \\G\\M\\T', strtotime("+6 months")), true);
header("Pragma: public");
header("Cache-Control: public");
header("Content-Length: {$filesize}");
header("ETag: \"{$etag}\"");
readfile($filename);
exit;
}
list($guid, $type, $filename) = explode('/', trim($_GET['__uri'], '/'));
$guid = (int) $guid;
if (!$guid) {
$response = new Response('', Response::HTTP_NOT_FOUND);
$response->send();
}
$last_cache = empty($_GET['lastcache']) ? 0 : (int) $_GET['lastcache'];
// icontime
// If is the same ETag, content didn't changed.
$etag = $last_cache . $guid;
if (isset($_SERVER['HTTP_IF_NONE_MATCH']) && trim($_SERVER['HTTP_IF_NONE_MATCH']) == "\"{$etag}\"") {
$response = new Response('', Response::HTTP_NOT_MODIFIED);
$response->send();
}
// @todo: validate hmac
$hmac = $_GET['hmac'];
$data_root = Application::getDataPath();
$locator = new EntityDirLocator($guid);
$full_path = "{$data_root}{$locator->getPath()}media/{$type}/{$filename}";
if (!file_exists($full_path)) {
header("HTTP/1.1 404 Not Found");
exit;
}
$contents = file_get_contents($full_path);
$response = new Response($contents);
$d = $response->headers->makeDisposition(ResponseHeaderBag::DISPOSITION_INLINE, basename($full_path));
$response->headers->set('Content-Disposition', $d);
$response->headers->set('Content-Type', 'image/jpeg');
$response->headers->set('Expires', gmdate('D, d M Y H:i:s \\G\\M\\T', strtotime("+6 months")));
$response->headers->set('ETag', $etag);
$response->send();
