78 lines
2.0 KiB
PHP
78 lines
2.0 KiB
PHP
<?php
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/**
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* ownCloud - Office App
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*
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* @author Victor Dubiniuk
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* @copyright 2013 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\Office\Download;
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use OCA\Office\View;
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class Range extends \OCA\Office\Download {
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// Start of the range
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protected $start;
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// End of the range
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protected $end;
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/**
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* Build download model to serve HTTP_RANGE
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* @param type $view - filesystem view
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* @param type $filepath - path to the file relative to this view root
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*/
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public function __construct($view, $filepath){
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$this->view = $view;
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$this->filepath = $filepath;
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}
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/**
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* Send the requested parts of the file
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*/
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public function sendResponse(){
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if (!preg_match('/^bytes=\d*-\d*(,\d*-\d*)*$/', $_SERVER['HTTP_RANGE'])){
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$this->sendNotSatisfiable();
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}
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$ranges = explode(',', substr($_SERVER['HTTP_RANGE'], 6));
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foreach ($ranges as $range){
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$parts = explode('-', $range);
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$start = isset($parts[0]) ? $parts[0] : 0;
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$end = isset($parts[1]) ? $parts[1] : $this->getFilesize() - 1;
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if ($start > $end){
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$this->sendNotSatisfiable();
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}
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$handle = $this->view->fopen($this->filepath, 'rb');
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\fseek($handle, $start);
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$buffer = \fread($handle, $end - $start);
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$md5Sum = md5($buffer);
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\fclose($handle);
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// send the headers and data
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header("Content-Length: " . $end - $start);
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header("Content-md5: " . $md5Sum);
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header("Accept-Ranges: bytes");
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header('Content-Range: bytes ' . $start . '-' . ($end) . '/' . $this->getFilesize());
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header("Connection: close");
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header("Content-type: " . $this->getMimeType());
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header('Content-Disposition: attachment; filename=' . $this->getFilename());
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\OC_Util::obEnd();
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echo $buffer;
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flush();
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}
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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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*/
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protected function sendNotSatisfiable(){
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header('HTTP/1.1 416 Requested Range Not Satisfiable');
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header('Content-Range: bytes */' . $this->getFilesize()); // Required in 416.
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exit;
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}
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}
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