/
Data.php
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/
Data.php
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<?php defined("SYSPATH") or die("No direct script access.");
/**
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2013 Bharat Mediratta
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
class Gallery_Rest_Data extends Rest {
/**
* This read-only resource returns Model_Item data files. Once verified, it calls a
* sub-request to the FileProxy controller (and therefore uses the same access control).
*
* GET returns the raw contents of a data file (id and "size" parameter required)
* size=<full, resize, or thumb>
* Return the raw contents of an item's full, resize, or thumb data files.
* m=<int>
* Query parameter added as a browser cache buster (ignored during processing).
* encoding=base64
* Output the data file using base64 encoding.
*/
public function get_response() {
$item = ORM::factory("Item", $this->id);
$size = Arr::get($this->params, "size");
$encoding = Arr::get($this->params, "encoding");
// Translate REST's "size" into FileProxy's "type".
$type = Arr::get(array("thumb" => "thumbs", "resize" => "resizes", "full" => "albums"), $size);
if (!$type) {
throw Rest_Exception::factory(400, array("size" => "invalid"));
}
// Build up our FileProxy subrequest.
$request = Request::factory("file_proxy/show")
->query(array(
"item" => $item,
"type" => $type,
"encoding" => $encoding
));
// Collect some headers we want to pass through.
$headers = Request::current()->headers();
foreach (array("If-None-Match", "If-Range", "Range", "Cache-Control") as $key) {
if (isset($headers[$key])) {
$request->headers($key, $headers[$key]);
}
}
// Execute the request. If sending content, FileProxy will dump the file to the browser and
// halt script execution with a status of either 200 (full file) or 206 (partial file).
$response = $request->execute();
// If not, we likely have an HTTP_Exception (typically a 304 or 404).
if ($response->status() >= 300) {
$e = Rest_Exception::factory($response->status());
// Collect some headers we want to pass through.
$headers = $response->headers();
foreach (array("Etag", "Cache-Control") as $key) {
if (isset($headers[$key])) {
$e->headers($key, $headers[$key]);
}
}
throw $e;
}
// Otherwise, simply return the body. We only get here if in TEST_MODE.
return $response->body();
}
}