diff --git a/files/externallib.php b/files/externallib.php
index 530f18d4c3205..2a94b7da6356e 100644
--- a/files/externallib.php
+++ b/files/externallib.php
@@ -1,375 +1,375 @@
-<?php
-
-// This file is part of Moodle - http://moodle.org/
-//
-// Moodle is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Moodle is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
-
-/**
- * External files API
- *
- * @package    moodlecore
- * @subpackage webservice
- * @copyright  2010 Dongsheng Cai <dongsheng@moodle.com>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
-require_once("$CFG->libdir/externallib.php");
-require_once("$CFG->libdir/filelib.php");
-
-/**
- * Files functions
- */
-class core_files_external extends external_api {
-
-    /**
-     * Returns description of get_files parameters
-     * @return external_function_parameters
-     */
-    public static function get_files_parameters() {
-        return new external_function_parameters(
-            array(
-                'contextid' => new external_value(PARAM_INT, 'context id'),
-                'component' => new external_value(PARAM_TEXT, 'component'),
-                'filearea'  => new external_value(PARAM_TEXT, 'file area'),
-                'itemid'    => new external_value(PARAM_INT, 'associated id'),
-                'filepath'  => new external_value(PARAM_PATH, 'file path'),
-                'filename'  => new external_value(PARAM_FILE, 'file name')
-            )
-        );
-    }
-
-    /**
-     * Return moodle files listing
-     * @param int $contextid
-     * @param int $component
-     * @param int $filearea
-     * @param int $itemid
-     * @param string $filepath
-     * @param string $filename
-     * @return array
-     */
-    public static function get_files($contextid, $component, $filearea, $itemid, $filepath, $filename) {
-        global $CFG, $USER, $OUTPUT;
-        $fileinfo = self::validate_parameters(self::get_files_parameters(), array('contextid'=>$contextid, 'component'=>$component, 'filearea'=>$filearea, 'itemid'=>$itemid, 'filepath'=>$filepath, 'filename'=>$filename));
-
-        $browser = get_file_browser();
-
-        if (empty($fileinfo['contextid'])) {
-            $context  = get_system_context();
-        } else {
-            $context  = get_context_instance_by_id($fileinfo['contextid']);
-        }
-        if (empty($fileinfo['component'])) {
-            $fileinfo['component'] = null;
-        }
-        if (empty($fileinfo['filearea'])) {
-            $fileinfo['filearea'] = null;
-        }
-        if (empty($fileinfo['itemid'])) {
-            $fileinfo['itemid'] = null;
-        }
-        if (empty($fileinfo['filename'])) {
-            $fileinfo['filename'] = null;
-        }
-        if (empty($fileinfo['filepath'])) {
-            $fileinfo['filepath'] = null;
-        }
-
-        $return = array();
-        $return['parents'] = array();
-        $return['files'] = array();
-        if ($file = $browser->get_file_info($context, $fileinfo['component'], $fileinfo['filearea'], $fileinfo['itemid'], $fileinfo['filepath'], $fileinfo['filename'])) {
-            $level = $file->get_parent();
-            while ($level) {
-                $params = $level->get_params();
-                $params['filename'] = $level->get_visible_name();
-                array_unshift($return['parents'], $params);
-                $level = $level->get_parent();
-            }
-            $list = array();
-            $children = $file->get_children();
-            foreach ($children as $child) {
-
-                $params = $child->get_params();
-
-                if ($child->is_directory()) {
-                    $node = array(
-                        'contextid' => $params['contextid'],
-                        'component' => $params['component'],
-                        'filearea'  => $params['filearea'],
-                        'itemid'    => $params['itemid'],
-                        'filepath'  => $params['filepath'],
-                        'filename'  => $child->get_visible_name(),
-                        'url'       => null,
-                        'isdir'     => true
-                    );
-                    $list[] = $node;
-                } else {
-                    $node = array(
-                        'contextid' => $params['contextid'],
-                        'component' => $params['component'],
-                        'filearea'  => $params['filearea'],
-                        'itemid'    => $params['itemid'],
-                        'filepath'  => $params['filepath'],
-                        'filename'  => $child->get_visible_name(),
-                        'url'       => $child->get_url(),
-                        'isdir'     => false
-                    );
-                    $list[] = $node;
-                }
-            }
-        }
-        $return['files'] = $list;
-        return $return;
-    }
-
-    /**
-     * Returns description of get_files returns
-     * @return external_multiple_structure
-     */
-    public static function get_files_returns() {
-        return new external_single_structure(
-            array(
-                'parents' => new external_multiple_structure(
-                    new external_single_structure(
-                        array(
-                            'contextid' => new external_value(PARAM_INT, ''),
-                            'component' => new external_value(PARAM_COMPONENT, ''),
-                            'filearea'  => new external_value(PARAM_AREA, ''),
-                            'itemid'    => new external_value(PARAM_INT, ''),
-                            'filepath'  => new external_value(PARAM_TEXT, ''),
-                            'filename'  => new external_value(PARAM_TEXT, ''),
-                        )
-                    )
-                ),
-                'files' => new external_multiple_structure(
-                    new external_single_structure(
-                        array(
-                            'contextid' => new external_value(PARAM_INT, ''),
-                            'component' => new external_value(PARAM_COMPONENT, ''),
-                            'filearea'  => new external_value(PARAM_AREA, ''),
-                            'itemid'   => new external_value(PARAM_INT, ''),
-                            'filepath' => new external_value(PARAM_TEXT, ''),
-                            'filename' => new external_value(PARAM_FILE, ''),
-                            'isdir'    => new external_value(PARAM_BOOL, ''),
-                            'url'      => new external_value(PARAM_TEXT, ''),
-                        )
-                    )
-                )
-            )
-        );
-    }
-
-    /**
-     * Returns description of upload parameters
-     * @return external_function_parameters
-     */
-    public static function upload_parameters() {
-        return new external_function_parameters(
-            array(
-                'contextid' => new external_value(PARAM_INT, 'context id'),
-                'component' => new external_value(PARAM_COMPONENT, 'component'),
-                'filearea'  => new external_value(PARAM_AREA, 'file area'),
-                'itemid'    => new external_value(PARAM_INT, 'associated id'),
-                'filepath'  => new external_value(PARAM_PATH, 'file path'),
-                'filename'  => new external_value(PARAM_FILE, 'file name'),
-                'filecontent' => new external_value(PARAM_TEXT, 'file content')
-            )
-        );
-    }
-
-    /**
-     * Uploading a file to moodle
-     *
-     * @param int $contextid
-     * @param string $component
-     * @param string $filearea
-     * @param int $itemid
-     * @param string $filepath
-     * @param string $filename
-     * @param string $filecontent
-     * @return array
-     */
-    public static function upload($contextid, $component, $filearea, $itemid, $filepath, $filename, $filecontent) {
-        global $USER, $CFG;
-
-        $fileinfo = self::validate_parameters(self::upload_parameters(), array('contextid'=>$contextid, 'component'=>$component, 'filearea'=>$filearea, 'itemid'=>$itemid, 'filepath'=>$filepath, 'filename'=>$filename, 'filecontent'=>$filecontent));
-
-        if (!isset($fileinfo['filecontent'])) {
-            throw new moodle_exception('nofile');
-        }
-        // saving file
-        $dir = make_temp_directory('wsupload');
-
-        if (empty($fileinfo['filename'])) {
-            $filename = uniqid('wsupload', true).'_'.time().'.tmp';
-        } else {
-            $filename = $fileinfo['filename'];
-        }
-
-        if (file_exists($dir.$filename)) {
-            $savedfilepath = $dir.uniqid('m').$filename;
-        } else {
-            $savedfilepath = $dir.$filename;
-        }
-
-
-        file_put_contents($savedfilepath, base64_decode($fileinfo['filecontent']));
-        unset($fileinfo['filecontent']);
-
-        if (!empty($fileinfo['filepath'])) {
-            $filepath = $fileinfo['filepath'];
-        } else {
-            $filepath = '/';
-        }
-
-        if (isset($fileinfo['itemid'])) {
-            // TODO: in user private area, itemid is always 0
-            $itemid = 0;
-        } else {
-            throw new coding_exception('itemid cannot be empty');
-        }
-
-        if (!empty($fileinfo['contextid'])) {
-            $context = get_context_instance_by_id($fileinfo['contextid']);
-        } else {
-            $context = get_system_context();
-        }
-
-        if (!($fileinfo['component'] == 'user' and $fileinfo['filearea'] == 'private')) {
-            throw new coding_exception('File can be uploaded to user private area only');
-        } else {
-            // TODO: hard-coded to use user_private area
-            $component = 'user';
-            $filearea = 'private';
-        }
-
-        $browser = get_file_browser();
-
-        // check existing file
-        if ($file = $browser->get_file_info($context, $component, $filearea, $itemid, $filepath, $filename)) {
-            throw new moodle_exception('fileexist');
-        }
-
-        // move file to filepool
-        if ($dir = $browser->get_file_info($context, $component, $filearea, $itemid, $filepath, '.')) {
-            $info = $dir->create_file_from_pathname($filename, $savedfilepath);
-            $params = $info->get_params();
-            unlink($savedfilepath);
-            return array(
-                'contextid'=>$params['contextid'],
-                'component'=>$params['component'],
-                'filearea'=>$params['filearea'],
-                'itemid'=>$params['itemid'],
-                'filepath'=>$params['filepath'],
-                'filename'=>$params['filename'],
-                'url'=>$info->get_url()
-                );
-        } else {
-            throw new moodle_exception('nofile');
-        }
-    }
-
-    /**
-     * Returns description of upload returns
-     * @return external_multiple_structure
-     */
-    public static function upload_returns() {
-        return new external_single_structure(
-             array(
-                 'contextid' => new external_value(PARAM_INT, ''),
-                 'component' => new external_value(PARAM_COMPONENT, ''),
-                 'filearea'  => new external_value(PARAM_AREA, ''),
-                 'itemid'   => new external_value(PARAM_INT, ''),
-                 'filepath' => new external_value(PARAM_TEXT, ''),
-                 'filename' => new external_value(PARAM_FILE, ''),
-                 'url'      => new external_value(PARAM_TEXT, ''),
-             )
-        );
-    }
-}
-
-/**
- * Deprecated files functions
- * @deprecated since Moodle 2.2 please use core_files_external instead
- */
-class moodle_file_external extends external_api {
-
-    /**
-     * Returns description of get_files parameters
-     * @deprecated since Moodle 2.2 please use core_files_external::get_files_parameters instead
-     * @return external_function_parameters
-     */
-    public static function get_files_parameters() {
-        return core_files_external::get_files_parameters();
-    }
-
-    /**
-     * Return moodle files listing
-     * @deprecated since Moodle 2.2 please use core_files_external::get_files instead
-     * @param int $contextid
-     * @param int $component
-     * @param int $filearea
-     * @param int $itemid
-     * @param string $filepath
-     * @param string $filename
-     * @return array
-     */
-    public static function get_files($contextid, $component, $filearea, $itemid, $filepath, $filename) {
-        return core_files_external::get_files($contextid, $component, $filearea, $itemid, $filepath, $filename);
-    }
-
-    /**
-     * Returns description of get_files returns
-     * @deprecated since Moodle 2.2 please use core_files_external::get_files_returns instead
-     * @return external_multiple_structure
-     */
-    public static function get_files_returns() {
-        return core_files_external::get_files_returns();
-    }
-
-    /**
-     * Returns description of upload parameters
-     * @deprecated since Moodle 2.2 please use core_files_external::upload_parameters instead
-     * @return external_function_parameters
-     */
-    public static function upload_parameters() {
-        return core_files_external::upload_parameters();
-    }
-
-    /**
-     * Uploading a file to moodle
-     * @deprecated since Moodle 2.2 please use core_files_external::upload instead
-     * @param int $contextid
-     * @param string $component
-     * @param string $filearea
-     * @param int $itemid
-     * @param string $filepath
-     * @param string $filename
-     * @param string $filecontent
-     * @return array
-     */
-    public static function upload($contextid, $component, $filearea, $itemid, $filepath, $filename, $filecontent) {
-        return core_files_external::upload($contextid, $component, $filearea, $itemid, $filepath, $filename, $filecontent);
-    }
-
-    /**
-     * Returns description of upload returns
-     * @deprecated since Moodle 2.2 please use core_files_external::upload_returns instead
-     * @return external_multiple_structure
-     */
-    public static function upload_returns() {
-        return core_files_external::upload_returns();
-    }
-}
+<?php
+
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * External files API
+ *
+ * @package    moodlecore
+ * @subpackage webservice
+ * @copyright  2010 Dongsheng Cai <dongsheng@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+require_once("$CFG->libdir/externallib.php");
+require_once("$CFG->libdir/filelib.php");
+
+/**
+ * Files functions
+ */
+class core_files_external extends external_api {
+
+    /**
+     * Returns description of get_files parameters
+     * @return external_function_parameters
+     */
+    public static function get_files_parameters() {
+        return new external_function_parameters(
+            array(
+                'contextid' => new external_value(PARAM_INT, 'context id'),
+                'component' => new external_value(PARAM_TEXT, 'component'),
+                'filearea'  => new external_value(PARAM_TEXT, 'file area'),
+                'itemid'    => new external_value(PARAM_INT, 'associated id'),
+                'filepath'  => new external_value(PARAM_PATH, 'file path'),
+                'filename'  => new external_value(PARAM_FILE, 'file name')
+            )
+        );
+    }
+
+    /**
+     * Return moodle files listing
+     * @param int $contextid
+     * @param int $component
+     * @param int $filearea
+     * @param int $itemid
+     * @param string $filepath
+     * @param string $filename
+     * @return array
+     */
+    public static function get_files($contextid, $component, $filearea, $itemid, $filepath, $filename) {
+        global $CFG, $USER, $OUTPUT;
+        $fileinfo = self::validate_parameters(self::get_files_parameters(), array('contextid'=>$contextid, 'component'=>$component, 'filearea'=>$filearea, 'itemid'=>$itemid, 'filepath'=>$filepath, 'filename'=>$filename));
+
+        $browser = get_file_browser();
+
+        if (empty($fileinfo['contextid'])) {
+            $context  = get_system_context();
+        } else {
+            $context  = get_context_instance_by_id($fileinfo['contextid']);
+        }
+        if (empty($fileinfo['component'])) {
+            $fileinfo['component'] = null;
+        }
+        if (empty($fileinfo['filearea'])) {
+            $fileinfo['filearea'] = null;
+        }
+        if (empty($fileinfo['itemid'])) {
+            $fileinfo['itemid'] = null;
+        }
+        if (empty($fileinfo['filename'])) {
+            $fileinfo['filename'] = null;
+        }
+        if (empty($fileinfo['filepath'])) {
+            $fileinfo['filepath'] = null;
+        }
+
+        $return = array();
+        $return['parents'] = array();
+        $return['files'] = array();
+        if ($file = $browser->get_file_info($context, $fileinfo['component'], $fileinfo['filearea'], $fileinfo['itemid'], $fileinfo['filepath'], $fileinfo['filename'])) {
+            $level = $file->get_parent();
+            while ($level) {
+                $params = $level->get_params();
+                $params['filename'] = $level->get_visible_name();
+                array_unshift($return['parents'], $params);
+                $level = $level->get_parent();
+            }
+            $list = array();
+            $children = $file->get_children();
+            foreach ($children as $child) {
+
+                $params = $child->get_params();
+
+                if ($child->is_directory()) {
+                    $node = array(
+                        'contextid' => $params['contextid'],
+                        'component' => $params['component'],
+                        'filearea'  => $params['filearea'],
+                        'itemid'    => $params['itemid'],
+                        'filepath'  => $params['filepath'],
+                        'filename'  => $child->get_visible_name(),
+                        'url'       => null,
+                        'isdir'     => true
+                    );
+                    $list[] = $node;
+                } else {
+                    $node = array(
+                        'contextid' => $params['contextid'],
+                        'component' => $params['component'],
+                        'filearea'  => $params['filearea'],
+                        'itemid'    => $params['itemid'],
+                        'filepath'  => $params['filepath'],
+                        'filename'  => $child->get_visible_name(),
+                        'url'       => $child->get_url(),
+                        'isdir'     => false
+                    );
+                    $list[] = $node;
+                }
+            }
+        }
+        $return['files'] = $list;
+        return $return;
+    }
+
+    /**
+     * Returns description of get_files returns
+     * @return external_multiple_structure
+     */
+    public static function get_files_returns() {
+        return new external_single_structure(
+            array(
+                'parents' => new external_multiple_structure(
+                    new external_single_structure(
+                        array(
+                            'contextid' => new external_value(PARAM_INT, ''),
+                            'component' => new external_value(PARAM_COMPONENT, ''),
+                            'filearea'  => new external_value(PARAM_AREA, ''),
+                            'itemid'    => new external_value(PARAM_INT, ''),
+                            'filepath'  => new external_value(PARAM_TEXT, ''),
+                            'filename'  => new external_value(PARAM_TEXT, ''),
+                        )
+                    )
+                ),
+                'files' => new external_multiple_structure(
+                    new external_single_structure(
+                        array(
+                            'contextid' => new external_value(PARAM_INT, ''),
+                            'component' => new external_value(PARAM_COMPONENT, ''),
+                            'filearea'  => new external_value(PARAM_AREA, ''),
+                            'itemid'   => new external_value(PARAM_INT, ''),
+                            'filepath' => new external_value(PARAM_TEXT, ''),
+                            'filename' => new external_value(PARAM_FILE, ''),
+                            'isdir'    => new external_value(PARAM_BOOL, ''),
+                            'url'      => new external_value(PARAM_TEXT, ''),
+                        )
+                    )
+                )
+            )
+        );
+    }
+
+    /**
+     * Returns description of upload parameters
+     * @return external_function_parameters
+     */
+    public static function upload_parameters() {
+        return new external_function_parameters(
+            array(
+                'contextid' => new external_value(PARAM_INT, 'context id'),
+                'component' => new external_value(PARAM_COMPONENT, 'component'),
+                'filearea'  => new external_value(PARAM_AREA, 'file area'),
+                'itemid'    => new external_value(PARAM_INT, 'associated id'),
+                'filepath'  => new external_value(PARAM_PATH, 'file path'),
+                'filename'  => new external_value(PARAM_FILE, 'file name'),
+                'filecontent' => new external_value(PARAM_TEXT, 'file content')
+            )
+        );
+    }
+
+    /**
+     * Uploading a file to moodle
+     *
+     * @param int $contextid
+     * @param string $component
+     * @param string $filearea
+     * @param int $itemid
+     * @param string $filepath
+     * @param string $filename
+     * @param string $filecontent
+     * @return array
+     */
+    public static function upload($contextid, $component, $filearea, $itemid, $filepath, $filename, $filecontent) {
+        global $USER, $CFG;
+
+        $fileinfo = self::validate_parameters(self::upload_parameters(), array('contextid'=>$contextid, 'component'=>$component, 'filearea'=>$filearea, 'itemid'=>$itemid, 'filepath'=>$filepath, 'filename'=>$filename, 'filecontent'=>$filecontent));
+
+        if (!isset($fileinfo['filecontent'])) {
+            throw new moodle_exception('nofile');
+        }
+        // saving file
+        $dir = make_temp_directory('wsupload');
+
+        if (empty($fileinfo['filename'])) {
+            $filename = uniqid('wsupload', true).'_'.time().'.tmp';
+        } else {
+            $filename = $fileinfo['filename'];
+        }
+
+        if (file_exists($dir.$filename)) {
+            $savedfilepath = $dir.uniqid('m').$filename;
+        } else {
+            $savedfilepath = $dir.$filename;
+        }
+
+
+        file_put_contents($savedfilepath, base64_decode($fileinfo['filecontent']));
+        unset($fileinfo['filecontent']);
+
+        if (!empty($fileinfo['filepath'])) {
+            $filepath = $fileinfo['filepath'];
+        } else {
+            $filepath = '/';
+        }
+
+        if (isset($fileinfo['itemid'])) {
+            // TODO: in user private area, itemid is always 0
+            $itemid = 0;
+        } else {
+            throw new coding_exception('itemid cannot be empty');
+        }
+
+        if (!empty($fileinfo['contextid'])) {
+            $context = get_context_instance_by_id($fileinfo['contextid']);
+        } else {
+            $context = get_system_context();
+        }
+
+        if (!($fileinfo['component'] == 'user' and $fileinfo['filearea'] == 'private')) {
+            throw new coding_exception('File can be uploaded to user private area only');
+        } else {
+            // TODO: hard-coded to use user_private area
+            $component = 'user';
+            $filearea = 'private';
+        }
+
+        $browser = get_file_browser();
+
+        // check existing file
+        if ($file = $browser->get_file_info($context, $component, $filearea, $itemid, $filepath, $filename)) {
+            throw new moodle_exception('fileexist');
+        }
+
+        // move file to filepool
+        if ($dir = $browser->get_file_info($context, $component, $filearea, $itemid, $filepath, '.')) {
+            $info = $dir->create_file_from_pathname($filename, $savedfilepath);
+            $params = $info->get_params();
+            unlink($savedfilepath);
+            return array(
+                'contextid'=>$params['contextid'],
+                'component'=>$params['component'],
+                'filearea'=>$params['filearea'],
+                'itemid'=>$params['itemid'],
+                'filepath'=>$params['filepath'],
+                'filename'=>$params['filename'],
+                'url'=>$info->get_url()
+                );
+        } else {
+            throw new moodle_exception('nofile');
+        }
+    }
+
+    /**
+     * Returns description of upload returns
+     * @return external_multiple_structure
+     */
+    public static function upload_returns() {
+        return new external_single_structure(
+             array(
+                 'contextid' => new external_value(PARAM_INT, ''),
+                 'component' => new external_value(PARAM_COMPONENT, ''),
+                 'filearea'  => new external_value(PARAM_AREA, ''),
+                 'itemid'   => new external_value(PARAM_INT, ''),
+                 'filepath' => new external_value(PARAM_TEXT, ''),
+                 'filename' => new external_value(PARAM_FILE, ''),
+                 'url'      => new external_value(PARAM_TEXT, ''),
+             )
+        );
+    }
+}
+
+/**
+ * Deprecated files functions
+ * @deprecated since Moodle 2.2 please use core_files_external instead
+ */
+class moodle_file_external extends external_api {
+
+    /**
+     * Returns description of get_files parameters
+     * @deprecated since Moodle 2.2 please use core_files_external::get_files_parameters instead
+     * @return external_function_parameters
+     */
+    public static function get_files_parameters() {
+        return core_files_external::get_files_parameters();
+    }
+
+    /**
+     * Return moodle files listing
+     * @deprecated since Moodle 2.2 please use core_files_external::get_files instead
+     * @param int $contextid
+     * @param int $component
+     * @param int $filearea
+     * @param int $itemid
+     * @param string $filepath
+     * @param string $filename
+     * @return array
+     */
+    public static function get_files($contextid, $component, $filearea, $itemid, $filepath, $filename) {
+        return core_files_external::get_files($contextid, $component, $filearea, $itemid, $filepath, $filename);
+    }
+
+    /**
+     * Returns description of get_files returns
+     * @deprecated since Moodle 2.2 please use core_files_external::get_files_returns instead
+     * @return external_multiple_structure
+     */
+    public static function get_files_returns() {
+        return core_files_external::get_files_returns();
+    }
+
+    /**
+     * Returns description of upload parameters
+     * @deprecated since Moodle 2.2 please use core_files_external::upload_parameters instead
+     * @return external_function_parameters
+     */
+    public static function upload_parameters() {
+        return core_files_external::upload_parameters();
+    }
+
+    /**
+     * Uploading a file to moodle
+     * @deprecated since Moodle 2.2 please use core_files_external::upload instead
+     * @param int $contextid
+     * @param string $component
+     * @param string $filearea
+     * @param int $itemid
+     * @param string $filepath
+     * @param string $filename
+     * @param string $filecontent
+     * @return array
+     */
+    public static function upload($contextid, $component, $filearea, $itemid, $filepath, $filename, $filecontent) {
+        return core_files_external::upload($contextid, $component, $filearea, $itemid, $filepath, $filename, $filecontent);
+    }
+
+    /**
+     * Returns description of upload returns
+     * @deprecated since Moodle 2.2 please use core_files_external::upload_returns instead
+     * @return external_multiple_structure
+     */
+    public static function upload_returns() {
+        return core_files_external::upload_returns();
+    }
+}