phorge/src/applications/files/controller/PhabricatorFileDataController.php
epriestley 0318cadad4 Fix two issues with audio macros
Summary:
Fixes T3887. Two issues:

  - Macros were generating entirely before the render cache, so audio macros worked fine in previews and the first time the cache was populated, but not afterward.
    - Instead, parse them before the cache but drop them in after the cache. Clean up all the file querying, too. This makes cached remarkup generate the correct audio beahviors.
  - Safari sends an HTTP request with a "Range" header, and expects a "206 Partial Content" response. If we don't give it one, it sometimes has trouble figuring out how long a piece of audio is (mostly for longer clips? Or mostly for MP3s?). I'm not exactly sure what triggers it. The net effect is that "loop" does not work when Safari gets confused. While looping a short "quack.wav" worked fine, longer MP3s didn't loop.
    - Supporting "Range" and "206 Partial Content", which is straightforward, fixes this problem.

Test Plan:
  - Viewed a page with lots of different cached audio macros and lots of different uncached preview audio macros, they all rendered correctly and played audio.
  - Viewed a macro with a long MP3 audio loop in Safari. Verified it looped after it completed. Used Charles to check that the server received and responded to the "Range" header correctly.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T3887

Differential Revision: https://secure.phabricator.com/D7166
2013-09-28 15:32:48 -07:00

80 lines
2.6 KiB
PHP

<?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);
// NOTE: It's important to accept "Range" requests when playing audio.
// If we don't, Safari has difficulty figuring out how long sounds are
// and glitches when trying to loop them. In particular, Safari sends
// an initial request for bytes 0-1 of the audio file, and things go south
// if we can't respond with a 206 Partial Content.
$range = $request->getHTTPHeader('range');
if ($range) {
$matches = null;
if (preg_match('/^bytes=(\d+)-(\d+)$/', $range, $matches)) {
$response->setHTTPResponseCode(206);
$response->setRange((int)$matches[1], (int)$matches[2]);
}
}
$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;
}
}