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PhabricatorFileDataController.php
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Mon, Dec 23, 16:08

PhabricatorFileDataController.php
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<?php
final class PhabricatorFileDataController extends PhabricatorFileController {
private $phid;
private $key;
public function willProcessRequest(array $data) {
$this->phid = $data['phid'];
$this->key = $data['key'];
}
public function shouldRequireLogin() {
return false;
}
public function processRequest() {
$request = $this->getRequest();
$alt = PhabricatorEnv::getEnvConfig('security.alternate-file-domain');
$uri = new PhutilURI($alt);
$alt_domain = $uri->getDomain();
if ($alt_domain && ($alt_domain != $request->getHost())) {
return id(new AphrontRedirectResponse())
->setURI($uri->setPath($request->getPath()));
}
$file = id(new PhabricatorFile())->loadOneWhere(
'phid = %s',
$this->phid);
if (!$file) {
return new Aphront404Response();
}
if (!$file->validateSecretKey($this->key)) {
return new Aphront403Response();
}
$data = $file->loadFileData();
$response = new AphrontFileResponse();
$response->setContent($data);
$response->setCacheDurationInSeconds(60 * 60 * 24 * 30);
$is_viewable = $file->isViewableInBrowser();
$force_download = $request->getExists('download');
if ($is_viewable && !$force_download) {
$response->setMimeType($file->getViewableMimeType());
} else {
if (!$request->isHTTPPost()) {
// NOTE: Require POST to download files. We'd rather go full-bore and
// do a real CSRF check, but can't currently authenticate users on the
// file domain. This should blunt any attacks based on iframes, script
// tags, applet tags, etc., at least. Send the user to the "info" page
// if they're using some other method.
return id(new AphrontRedirectResponse())
->setURI(PhabricatorEnv::getProductionURI($file->getBestURI()));
}
$response->setMimeType($file->getMimeType());
$response->setDownload($file->getName());
}
return $response;
}
}

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