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diff --git a/src/applications/files/controller/transform/PhabricatorFileTransformController.php b/src/applications/files/controller/transform/PhabricatorFileTransformController.php
index c2b777233d..2929374ba4 100644
--- a/src/applications/files/controller/transform/PhabricatorFileTransformController.php
+++ b/src/applications/files/controller/transform/PhabricatorFileTransformController.php
@@ -1,123 +1,127 @@
<?php
/*
* Copyright 2011 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
class PhabricatorFileTransformController extends PhabricatorFileController {
private $transform;
private $phid;
public function willProcessRequest(array $data) {
$this->transform = $data['transform'];
$this->phid = $data['phid'];
}
public function processRequest() {
$xform = id(new PhabricatorTransformedFile())
->loadOneWhere(
'originalPHID = %s AND transform = %s',
$this->phid,
$this->transform);
if ($xform) {
return $this->buildTransformedFileResponse($xform);
}
$file = id(new PhabricatorFile())->loadOneWhere('phid = %s', $this->phid);
if (!$file) {
return new Aphront404Response();
}
$type = $file->getMimeType();
if (!$file->isViewableInBrowser() || !$file->isTransformableImage()) {
return $this->buildDefaultTransformation($file);
}
+ // We're essentially just building a cache here and don't need CSRF
+ // protection.
+ $unguarded = AphrontWriteGuard::beginScopedUnguardedWrites();
+
switch ($this->transform) {
case 'thumb-160x120':
$xformed_file = $this->executeThumbTransform($file, 160, 120);
break;
case 'thumb-60x45':
$xformed_file = $this->executeThumbTransform($file, 60, 45);
break;
default:
return new Aphront400Response();
}
if (!$xformed_file) {
return new Aphront400Response();
}
$xform = new PhabricatorTransformedFile();
$xform->setOriginalPHID($this->phid);
$xform->setTransform($this->transform);
$xform->setTransformedPHID($xformed_file->getPHID());
$xform->save();
return $this->buildTransformedFileResponse($xform);
}
private function buildDefaultTransformation(PhabricatorFile $file) {
static $regexps = array(
'@application/zip@' => 'zip',
'@image/@' => 'image',
'@application/pdf@' => 'pdf',
'@.*@' => 'default',
);
$type = $file->getMimeType();
$prefix = 'default';
foreach ($regexps as $regexp => $implied_prefix) {
if (preg_match($regexp, $type)) {
$prefix = $implied_prefix;
break;
}
}
switch ($this->transform) {
case 'thumb-160x120':
$suffix = '160x120';
break;
case 'thumb-60x45':
$suffix = '60x45';
break;
default:
throw new Exception("Unsupported transformation type!");
}
$path = "/rsrc/image/icon/fatcow/thumbnails/{$prefix}{$suffix}.png";
return id(new AphrontRedirectResponse())
->setURI($path);
}
private function buildTransformedFileResponse(
PhabricatorTransformedFile $xform) {
// TODO: We could just delegate to the file view controller instead,
// which would save the client a roundtrip, but is slightly more complex.
return id(new AphrontRedirectResponse())->setURI(
PhabricatorFileURI::getViewURIForPHID($xform->getTransformedPHID()));
}
private function executeThumbTransform(PhabricatorFile $file, $x, $y) {
$xformer = new PhabricatorImageTransformer();
return $xformer->executeThumbTransform($file, $x, $y);
}
}

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Content licensed under Creative Commons Attribution-ShareAlike 4.0 (CC-BY-SA) unless otherwise noted; code licensed under Apache 2.0 or other open source licenses. · CC BY-SA 4.0 · Apache 2.0