webservice/upload.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17
  18 /**
  19  * Accept uploading files by web service token
  20  *
  21  * POST params:
  22  *  token => the web service user token (needed for authentication)
  23  *  filepath => the private file aera path (where files will be stored)
  24  *  [_FILES] => for example you can send the files with <input type=file>,
  25  *              or with curl magic: 'file_1' => '@/path/to/file', or ...
  26  *
  27  * @package    core_webservice
  28  * @copyright  2011 Dongsheng Cai <dongsheng@moodle.com>
  29  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  30  */
  31
  32 /**
  33  * AJAX_SCRIPT - exception will be converted into JSON
  34  */
  35 define('AJAX_SCRIPT', true);
  36
  37 /**
  38  * NO_MOODLE_COOKIES - we don't want any cookie
  39  */
  40 define('NO_MOODLE_COOKIES', true);
  41
  42 require_once(dirname(dirname(__FILE__)) . '/config.php');
  43 require_once($CFG->dirroot . '/webservice/lib.php');
  44 $filepath = optional_param('filepath', '/', PARAM_PATH);
  45
  46 echo $OUTPUT->header();
  47
  48 // authenticate the user
  49 $token = required_param('token', PARAM_ALPHANUM);
  50 $webservicelib = new webservice();
  51 $authenticationinfo = $webservicelib->authenticate_user($token);
  52
  53 // check the user can manage his own files (can upload)
  54 $context = get_context_instance(CONTEXT_USER, $USER->id);
  55 require_capability('moodle/user:manageownfiles', $context);
  56
  57 $fs = get_file_storage();
  58
  59 $totalsize = 0;
  60 $files = array();
  61 foreach ($_FILES as $fieldname=>$uploaded_file) {
  62     // check upload errors
  63     if (!empty($_FILES[$fieldname]['error'])) {
  64         switch ($_FILES[$fieldname]['error']) {
  65         case UPLOAD_ERR_INI_SIZE:
  66             throw new moodle_exception('upload_error_ini_size', 'repository_upload');
  67             break;
  68         case UPLOAD_ERR_FORM_SIZE:
  69             throw new moodle_exception('upload_error_form_size', 'repository_upload');
  70             break;
  71         case UPLOAD_ERR_PARTIAL:
  72             throw new moodle_exception('upload_error_partial', 'repository_upload');
  73             break;
  74         case UPLOAD_ERR_NO_FILE:
  75             throw new moodle_exception('upload_error_no_file', 'repository_upload');
  76             break;
  77         case UPLOAD_ERR_NO_TMP_DIR:
  78             throw new moodle_exception('upload_error_no_tmp_dir', 'repository_upload');
  79             break;
  80         case UPLOAD_ERR_CANT_WRITE:
  81             throw new moodle_exception('upload_error_cant_write', 'repository_upload');
  82             break;
  83         case UPLOAD_ERR_EXTENSION:
  84             throw new moodle_exception('upload_error_extension', 'repository_upload');
  85             break;
  86         default:
  87             throw new moodle_exception('nofile');
  88         }
  89     }
  90     $file = new stdClass();
  91     $file->filename = clean_param($_FILES[$fieldname]['name'], PARAM_FILE);
  92     // check system maxbytes setting
  93     if (($_FILES[$fieldname]['size'] > get_max_upload_file_size($CFG->maxbytes))) {
  94         // oversize file will be ignored, error added to array to notify
  95         // web service client
  96         $file->errortype = 'fileoversized';
  97         $file->error = get_string('maxbytes', 'error');
  98     } else {
  99         $file->filepath = $_FILES[$fieldname]['tmp_name'];
 100         // calculate total size of upload
 101         $totalsize += $_FILES[$fieldname]['size'];
 102     }
 103     $files[] = $file;
 104 }
 105
 106 $fs = get_file_storage();
 107
 108 $usedspace = 0;
 109 $privatefiles = $fs->get_area_files($context->id, 'user', 'private', false, 'id', false);
 110 foreach ($privatefiles as $file) {
 111     $usedspace += $file->get_filesize();
 112 }
 113
 114 if ($totalsize > ($CFG->userquota - $usedspace)) {
 115     throw new file_exception('userquotalimit');
 116 }
 117
 118 $results = array();
 119 foreach ($files as $file) {
 120     if (!empty($file->error)) {
 121         // including error and filename
 122         $results[] = $file;
 123         continue;
 124     }
 125     $file_record = new stdClass;
 126     $file_record->component = 'user';
 127     $file_record->contextid = $context->id;
 128     $file_record->userid    = $USER->id;
 129     $file_record->filearea  = 'private';
 130     $file_record->filename = $file->filename;
 131     $file_record->filepath  = $filepath;
 132     $file_record->itemid    = 0;
 133     $file_record->license   = $CFG->sitedefaultlicense;
 134     $file_record->author    = fullname($authenticationinfo['user']);;
 135     $file_record->source    = '';
 136
 137     //Check if the file already exist
 138     $existingfile = $fs->file_exists($file_record->contextid, $file_record->component, $file_record->filearea,
 139                 $file_record->itemid, $file_record->filepath, $file_record->filename);
 140     if ($existingfile) {
 141         $file->errortype = 'filenameexist';
 142         $file->error = get_string('filenameexist', 'webservice', $file->filename);
 143         $results[] = $file;
 144     } else {
 145         $stored_file = $fs->create_file_from_pathname($file_record, $file->filepath);
 146         $results[] = $file_record;
 147     }
 148 }
 149 echo json_encode($results);