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phorge-phorge/src/applications/files/controller/PhabricatorFileDataController.php
epriestley 13dae05193 Make most file reads policy-aware
Summary: Ref T603. Swaps out most `PhabricatorFile` loads for `PhabricatorFileQuery`.

Test Plan:
  - Viewed Differential changesets.
  - Used `file.info`.
  - Used `file.download`.
  - Viewed a file.
  - Deleted a file.
  - Used `/Fnnnn` to access a file.
  - Uploaded an image, verified a thumbnail generated.
  - Created and edited a macro.
  - Added a meme.
  - Did old-school attach-a-file-to-a-task.
  - Viewed a paste.
  - Viewed a mock.
  - Embedded a mock.
  - Profiled a page.
  - Parsed a commit with image files linked to a revision with image files.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T603

Differential Revision: https://secure.phabricator.com/D7178
2013-09-30 09:38:13 -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()));
}
$file = id(new PhabricatorFileQuery())
->setViewer($request->getUser())
->withPHIDs(array($this->phid))
->executeOne();
if (!$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;
}
}