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externallib.php
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externallib.php
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<?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 core_files
* @category external
* @copyright 2010 Dongsheng Cai
* @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 external functions
*
* @package core_files
* @category external
* @copyright 2011 Jerome Mouneyrac
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.2
*/
class core_files_external extends external_api {
/**
* Returns description of get_files parameters
*
* @return external_function_parameters
* @since Moodle 2.2
*/
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'),
'modified' => new external_value(PARAM_INT, 'timestamp to return files changed after this time.', VALUE_DEFAULT, null)
)
);
}
/**
* Return moodle files listing
*
* @param int $contextid context id
* @param int $component component
* @param int $filearea file aera
* @param int $itemid item id
* @param string $filepath file path
* @param string $filename file name
* @param int $modified timestamp to return files changed after this time.
* @return array
* @since Moodle 2.2
*/
public static function get_files($contextid, $component, $filearea, $itemid, $filepath, $filename, $modified = null) {
global $CFG, $USER, $OUTPUT;
$fileinfo = self::validate_parameters(self::get_files_parameters(), array(
'contextid'=>$contextid, 'component'=>$component, 'filearea'=>$filearea,
'itemid'=>$itemid, 'filepath'=>$filepath, 'filename'=>$filename, 'modified'=>$modified));
$browser = get_file_browser();
if (empty($fileinfo['contextid'])) {
$context = get_system_context();
} else {
$context = context::instance_by_id($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();
$list = array();
if ($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();
}
$children = $file->get_children();
foreach ($children as $child) {
$params = $child->get_params();
$timemodified = $child->get_timemodified();
if ($child->is_directory()) {
if ((is_null($modified)) or ($modified < $timemodified)) {
$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,
'timemodified' => $timemodified
);
$list[] = $node;
}
} else {
if ((is_null($modified)) or ($modified < $timemodified)) {
$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,
'timemodified' => $timemodified
);
$list[] = $node;
}
}
}
}
$return['files'] = $list;
return $return;
}
/**
* Returns description of get_files returns
*
* @return external_single_structure
* @since Moodle 2.2
*/
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, ''),
'timemodified' => new external_value(PARAM_INT, ''),
)
)
)
)
);
}
/**
* Returns description of upload parameters
*
* @return external_function_parameters
* @since Moodle 2.2
*/
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 context id
* @param string $component component
* @param string $filearea file aera
* @param int $itemid item id
* @param string $filepath file path
* @param string $filename file name
* @param string $filecontent file content
* @return array
* @since Moodle 2.2
*/
public static function upload($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 MDL-31116 in user private area, itemid is always 0.
$itemid = 0;
} else {
throw new coding_exception('itemid cannot be empty');
}
if (!empty($fileinfo['contextid'])) {
$context = context::instance_by_id($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 MDL-31116 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_single_structure
* @since Moodle 2.2
*/
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 external functions
*
* @package core_files
* @copyright 2010 Dongsheng Cai
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.0
* @deprecated Moodle 2.2 MDL-29106 - Please do not use this class any more.
* @todo MDL-31194 This will be deleted in Moodle 2.5.
* @see core_files_external
*/
class moodle_file_external extends external_api {
/**
* Returns description of get_files parameters
*
* @return external_function_parameters
* @since Moodle 2.0
* @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
* @todo MDL-31194 This will be deleted in Moodle 2.5.
* @see core_files_external::get_files_parameters()
*/
public static function get_files_parameters() {
return core_files_external::get_files_parameters();
}
/**
* Return moodle files listing
*
* @param int $contextid
* @param int $component
* @param int $filearea
* @param int $itemid
* @param string $filepath
* @param string $filename
* @return array
* @since Moodle 2.0
* @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
* @todo MDL-31194 This will be deleted in Moodle 2.5.
* @see core_files_external::get_files()
*/
public static function get_files($contextid, $component, $filearea, $itemid, $filepath, $filename) {
return core_files_external::get_files($contextid, $component, $filearea, $itemid, $filepath, $filename);
}
/**
* Returns description of get_files returns
*
* @return external_single_structure
* @since Moodle 2.0
* @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
* @todo MDL-31194 This will be deleted in Moodle 2.5.
* @see core_files_external::get_files_returns()
*/
public static function get_files_returns() {
return core_files_external::get_files_returns();
}
/**
* Returns description of upload parameters
*
* @return external_function_parameters
* @since Moodle 2.0
* @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
* @todo MDL-31194 This will be deleted in Moodle 2.5.
* @see core_files_external::upload_parameters()
*/
public static function upload_parameters() {
return core_files_external::upload_parameters();
}
/**
* 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 $filecontent
* @return array
* @since Moodle 2.0
* @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
* @todo MDL-31194 This will be deleted in Moodle 2.5.
* @see core_files_external::upload()
*/
public static function upload($contextid, $component, $filearea, $itemid, $filepath, $filename, $filecontent) {
return core_files_external::upload($contextid, $component, $filearea, $itemid, $filepath, $filename, $filecontent);
}
/**
* Returns description of upload returns
*
* @return external_single_structure
* @since Moodle 2.0
* @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
* @todo MDL-31194 This will be deleted in Moodle 2.5.
* @see core_files_external::upload_returns()
*/
public static function upload_returns() {
return core_files_external::upload_returns();
}
}