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<?php
/**
* ownCloud - Documents App
*
* @author Victor Dubiniuk
* @copyright 2014 Victor Dubiniuk victor.dubiniuk@gmail.com
*
* This file is licensed under the Affero General Public License version 3 or
* later.
*/
namespace OCA\Documents;
use \OCP\AppFramework\Http;
use \OCP\IRequest;
use \OC\Files\View;
class DownloadResponse extends \OCP\AppFramework\Http\Response {
private $request;
private $view;
private $path;
/**
* @param IRequest $request
* @param string $user
* @param string $path
*/
public function __construct(IRequest $request, $user, $path) {
$this->request = $request;
$this->user = $user;
$this->path = $path;
$this->view = new View('/' . $user);
if (!$this->view->file_exists($path)){
$this->setStatus(Http::STATUS_NOT_FOUND);
}
}
public function render(){
if ($this->getStatus() === Http::STATUS_NOT_FOUND){
return '';
}
$info = $this->view->getFileInfo($this->path);
$this->ETag = $info['etag'];
$content = $this->view->file_get_contents($this->path);
$data = \OCA\Documents\Filter::read($content, $info['mimetype']);
$size = strlen($data['content']);
if (isset($this->request->server['HTTP_RANGE']) && !is_null($this->request->server['HTTP_RANGE'])){
$isValidRange = preg_match('/^bytes=\d*-\d*(,\d*-\d*)*$/', $this->request->server['HTTP_RANGE']);
if (!$isValidRange){
return $this->sendRangeNotSatisfiable($size);
}
$ranges = explode(',', substr($this->request->server['HTTP_RANGE'], 6));
foreach ($ranges as $range){
$parts = explode('-', $range);
if ($parts[0]==='' && $parts[1]=='') {
$this->sendNotSatisfiable($size);
}
if ($parts[0]==='') {
$start = $size - $parts[1];
$end = $size - 1;
} else {
$start = $parts[0];
$end = ($parts[1]==='') ? $size - 1 : $parts[1];
}
if ($start > $end){
$this->sendNotSatisfiable($size);
}
$buffer = substr($data['content'], $start, $end - $start);
$md5Sum = md5($buffer);
// send the headers and data
$this->addHeader('Content-Length', $end - $start);
$this->addHeader('Content-md5', $md5Sum);
$this->addHeader('Accept-Ranges', 'bytes');
$this->addHeader('Content-Range', 'bytes ' . $start . '-' . ($end) . '/' . $size);
$this->addHeader('Connection', 'close');
$this->addHeader('Content-Type', $data['mimetype']);
$this->addContentDispositionHeader();
return $buffer;
}
}
$this->addHeader('Content-Type', $data['mimetype']);
$this->addContentDispositionHeader();
$this->addHeader('Content-Length', $size);
return $data['content'];
}
/**
* Send 416 if we can't satisfy the requested ranges
* @param integer $filesize
*/
protected function sendRangeNotSatisfiable($filesize){
$this->setStatus(Http::STATUS_REQUEST_RANGE_NOT_SATISFIABLE);
$this->addHeader('Content-Range', 'bytes */' . $filesize); // Required in 416.
return '';
}
protected function addContentDispositionHeader(){
$encodedName = rawurlencode(basename($this->path));
$isIE = preg_match("/MSIE/", $this->request->server["HTTP_USER_AGENT"]);
if ($isIE){
$this->addHeader(
'Content-Disposition',
'attachment; filename="' . $encodedName . '"'
);
} else {
$this->addHeader(
'Content-Disposition',
'attachment; filename*=UTF-8\'\'' . $encodedName . '; filepath="' . $encodedName . '"'
);
}
}
}
|
