<?php
  /**
   * Copyright (c) 2012 Bart Visscher <bartv@thisnet.nl>
   * This file is licensed under the Affero General Public License version 3 or
   * later.
   * See the COPYING-README file.
   */
  
  /**
   * filesync can be called with a PUT method.
   * PUT takes a stream starting with a 2 byte blocksize,
   *     followed by binary md5 of the blocks. Everything in big-endian.
   *     The return is a json encoded with:
   *       - 'transferid'
   *       - 'needed' chunks
   *       - 'last' checked chunk
   * The URL is made of 3 parts, the service url (remote.php/filesync/), the sync
   * type and the path in ownCloud.
   * At the moment the only supported sync type is 'oc_chunked'.
   * The final URL will look like http://.../remote.php/filesync/oc_chunked/path/to/file
   */
  
  // load needed apps
  $RUNTIME_APPTYPES=array('filesystem', 'authentication', 'logging');
  OC_App::loadApps($RUNTIME_APPTYPES);
  if(!OC_User::isLoggedIn()) {
  	if(!isset($_SERVER['PHP_AUTH_USER'])) {
  		header('WWW-Authenticate: Basic realm="ownCloud Server"');
  		header('HTTP/1.0 401 Unauthorized');
  		echo 'Valid credentials must be supplied';
  		exit();
  	} else {
  		if(!OC_User::login($_SERVER["PHP_AUTH_USER"], $_SERVER["PHP_AUTH_PW"])) {
  			exit();
  		}
  	}
  }
  
  list($type, $file) = explode('/', substr($path_info, 1+strlen($service)+1), 2);
  
  if ($type != 'oc_chunked') {
  	OC_Response::setStatus(OC_Response::STATUS_NOT_FOUND);
  	die;
  }
  
  if (!\OC\Files\Filesystem::is_file($file)) {
  	OC_Response::setStatus(OC_Response::STATUS_NOT_FOUND);
  	die;
  }
  
  switch($_SERVER['REQUEST_METHOD']) {
  	case 'PUT':
  		$input = fopen("php://input", "r");
  		$org_file = \OC\Files\Filesystem::fopen($file, 'rb');
  		$info = array(
  			'name' => basename($file),
  		);
  		$sync = new OC_FileChunking($info);
  		$result = $sync->signature_split($org_file, $input);
  		echo json_encode($result);
  		break;
  	default:
  		OC_Response::setStatus(OC_Response::STATUS_NOT_FOUND);
  }