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