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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 course API
*
* @package core_course
* @category external
* @copyright 2009 Petr Skodak
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die;
require_once("$CFG->libdir/externallib.php");
/**
* Course external functions
*
* @package core_course
* @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_course_external extends external_api {
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.2
*/
public static function get_course_contents_parameters() {
return new external_function_parameters(
array('courseid' => new external_value(PARAM_INT, 'course id'),
'options' => new external_multiple_structure (
new external_single_structure(
array('name' => new external_value(PARAM_ALPHANUM, 'option name'),
'value' => new external_value(PARAM_RAW, 'the value of the option, this param is personaly validated in the external function.')
)
), 'Options, not used yet, might be used in later version', VALUE_DEFAULT, array())
)
);
}
/**
* Get course contents
*
* @param int $courseid course id
* @param array $options These options are not used yet, might be used in later version
* @return array
* @since Moodle 2.2
*/
public static function get_course_contents($courseid, $options = array()) {
global $CFG, $DB;
require_once($CFG->dirroot . "/course/lib.php");
//validate parameter
$params = self::validate_parameters(self::get_course_contents_parameters(),
array('courseid' => $courseid, 'options' => $options));
//retrieve the course
$course = $DB->get_record('course', array('id' => $params['courseid']), '*', MUST_EXIST);
//check course format exist
if (!file_exists($CFG->dirroot . '/course/format/' . $course->format . '/lib.php')) {
throw new moodle_exception('cannotgetcoursecontents', 'webservice', '', null, get_string('courseformatnotfound', 'error', '', $course->format));
} else {
require_once($CFG->dirroot . '/course/format/' . $course->format . '/lib.php');
}
// now security checks
$context = context_course::instance($course->id, IGNORE_MISSING);
try {
self::validate_context($context);
} catch (Exception $e) {
$exceptionparam = new stdClass();
$exceptionparam->message = $e->getMessage();
$exceptionparam->courseid = $course->id;
throw new moodle_exception('errorcoursecontextnotvalid', 'webservice', '', $exceptionparam);
}
$canupdatecourse = has_capability('moodle/course:update', $context);
//create return value
$coursecontents = array();
if ($canupdatecourse or $course->visible
or has_capability('moodle/course:viewhiddencourses', $context)) {
//retrieve sections
$modinfo = get_fast_modinfo($course);
$sections = get_all_sections($course->id);
//for each sections (first displayed to last displayed)
foreach ($sections as $key => $section) {
$showsection = (has_capability('moodle/course:viewhiddensections', $context) or $section->visible or !$course->hiddensections);
if (!$showsection) {
continue;
}
// reset $sectioncontents
$sectionvalues = array();
$sectionvalues['id'] = $section->id;
$sectionvalues['name'] = get_section_name($course, $section);
$sectionvalues['visible'] = $section->visible;
list($sectionvalues['summary'], $sectionvalues['summaryformat']) =
external_format_text($section->summary, $section->summaryformat,
$context->id, 'course', 'section', $section->id);
$sectioncontents = array();
//for each module of the section
foreach ($modinfo->sections[$section->section] as $cmid) { //matching /course/lib.php:print_section() logic
$cm = $modinfo->cms[$cmid];
// stop here if the module is not visible to the user
if (!$cm->uservisible) {
continue;
}
$module = array();
//common info (for people being able to see the module or availability dates)
$module['id'] = $cm->id;
$module['name'] = format_string($cm->name, true);
$module['modname'] = $cm->modname;
$module['modplural'] = $cm->modplural;
$module['modicon'] = $cm->get_icon_url()->out(false);
$module['indent'] = $cm->indent;
$modcontext = context_module::instance($cm->id);
if (!empty($cm->showdescription)) {
$module['description'] = $cm->get_content();
}
//url of the module
$url = $cm->get_url();
if ($url) { //labels don't have url
$module['url'] = $cm->get_url()->out();
}
$canviewhidden = has_capability('moodle/course:viewhiddenactivities',
context_module::instance($cm->id));
//user that can view hidden module should know about the visibility
$module['visible'] = $cm->visible;
//availability date (also send to user who can see hidden module when the showavailabilyt is ON)
if ($canupdatecourse or ($CFG->enableavailability && $canviewhidden && $cm->showavailability)) {
$module['availablefrom'] = $cm->availablefrom;
$module['availableuntil'] = $cm->availableuntil;
}
$baseurl = 'webservice/pluginfile.php';
//call $modulename_export_contents
//(each module callback take care about checking the capabilities)
require_once($CFG->dirroot . '/mod/' . $cm->modname . '/lib.php');
$getcontentfunction = $cm->modname.'_export_contents';
if (function_exists($getcontentfunction)) {
if ($contents = $getcontentfunction($cm, $baseurl)) {
$module['contents'] = $contents;
}
}
//assign result to $sectioncontents
$sectioncontents[] = $module;
}
$sectionvalues['modules'] = $sectioncontents;
// assign result to $coursecontents
$coursecontents[] = $sectionvalues;
}
}
return $coursecontents;
}
/**
* Returns description of method result value
*
* @return external_description
* @since Moodle 2.2
*/
public static function get_course_contents_returns() {
return new external_multiple_structure(
new external_single_structure(
array(
'id' => new external_value(PARAM_INT, 'Section ID'),
'name' => new external_value(PARAM_TEXT, 'Section name'),
'visible' => new external_value(PARAM_INT, 'is the section visible', VALUE_OPTIONAL),
'summary' => new external_value(PARAM_RAW, 'Section description'),
'summaryformat' => new external_format_value('summary'),
'modules' => new external_multiple_structure(
new external_single_structure(
array(
'id' => new external_value(PARAM_INT, 'activity id'),
'url' => new external_value(PARAM_URL, 'activity url', VALUE_OPTIONAL),
'name' => new external_value(PARAM_TEXT, 'activity module name'),
'description' => new external_value(PARAM_RAW, 'activity description', VALUE_OPTIONAL),
'visible' => new external_value(PARAM_INT, 'is the module visible', VALUE_OPTIONAL),
'modicon' => new external_value(PARAM_URL, 'activity icon url'),
'modname' => new external_value(PARAM_PLUGIN, 'activity module type'),
'modplural' => new external_value(PARAM_TEXT, 'activity module plural name'),
'availablefrom' => new external_value(PARAM_INT, 'module availability start date', VALUE_OPTIONAL),
'availableuntil' => new external_value(PARAM_INT, 'module availability en date', VALUE_OPTIONAL),
'indent' => new external_value(PARAM_INT, 'number of identation in the site'),
'contents' => new external_multiple_structure(
new external_single_structure(
array(
// content info
'type'=> new external_value(PARAM_TEXT, 'a file or a folder or external link'),
'filename'=> new external_value(PARAM_FILE, 'filename'),
'filepath'=> new external_value(PARAM_PATH, 'filepath'),
'filesize'=> new external_value(PARAM_INT, 'filesize'),
'fileurl' => new external_value(PARAM_URL, 'downloadable file url', VALUE_OPTIONAL),
'content' => new external_value(PARAM_RAW, 'Raw content, will be used when type is content', VALUE_OPTIONAL),
'timecreated' => new external_value(PARAM_INT, 'Time created'),
'timemodified' => new external_value(PARAM_INT, 'Time modified'),
'sortorder' => new external_value(PARAM_INT, 'Content sort order'),
// copyright related info
'userid' => new external_value(PARAM_INT, 'User who added this content to moodle'),
'author' => new external_value(PARAM_TEXT, 'Content owner'),
'license' => new external_value(PARAM_TEXT, 'Content license'),
)
), VALUE_DEFAULT, array()
)
)
), 'list of module'
)
)
)
);
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.3
*/
public static function get_courses_parameters() {
return new external_function_parameters(
array('options' => new external_single_structure(
array('ids' => new external_multiple_structure(
new external_value(PARAM_INT, 'Course id')
, 'List of course id. If empty return all courses
except front page course.',
VALUE_OPTIONAL)
), 'options - operator OR is used', VALUE_DEFAULT, array())
)
);
}
/**
* Get courses
*
* @param array $options It contains an array (list of ids)
* @return array
* @since Moodle 2.2
*/
public static function get_courses($options = array()) {
global $CFG, $DB;
require_once($CFG->dirroot . "/course/lib.php");
//validate parameter
$params = self::validate_parameters(self::get_courses_parameters(),
array('options' => $options));
//retrieve courses
if (!key_exists('ids', $params['options'])
or empty($params['options']['ids'])) {
$courses = $DB->get_records('course');
} else {
$courses = $DB->get_records_list('course', 'id', $params['options']['ids']);
}
//create return value
$coursesinfo = array();
foreach ($courses as $course) {
// now security checks
$context = context_course::instance($course->id, IGNORE_MISSING);
try {
self::validate_context($context);
} catch (Exception $e) {
$exceptionparam = new stdClass();
$exceptionparam->message = $e->getMessage();
$exceptionparam->courseid = $course->id;
throw new moodle_exception('errorcoursecontextnotvalid', 'webservice', '', $exceptionparam);
}
require_capability('moodle/course:view', $context);
$courseinfo = array();
$courseinfo['id'] = $course->id;
$courseinfo['fullname'] = $course->fullname;
$courseinfo['shortname'] = $course->shortname;
$courseinfo['categoryid'] = $course->category;
list($courseinfo['summary'], $courseinfo['summaryformat']) =
external_format_text($course->summary, $course->summaryformat, $context->id, 'course', 'summary', 0);
$courseinfo['format'] = $course->format;
$courseinfo['startdate'] = $course->startdate;
$courseinfo['numsections'] = $course->numsections;
//some field should be returned only if the user has update permission
$courseadmin = has_capability('moodle/course:update', $context);
if ($courseadmin) {
$courseinfo['categorysortorder'] = $course->sortorder;
$courseinfo['idnumber'] = $course->idnumber;
$courseinfo['showgrades'] = $course->showgrades;
$courseinfo['showreports'] = $course->showreports;
$courseinfo['newsitems'] = $course->newsitems;
$courseinfo['visible'] = $course->visible;
$courseinfo['maxbytes'] = $course->maxbytes;
$courseinfo['hiddensections'] = $course->hiddensections;
$courseinfo['groupmode'] = $course->groupmode;
$courseinfo['groupmodeforce'] = $course->groupmodeforce;
$courseinfo['defaultgroupingid'] = $course->defaultgroupingid;
$courseinfo['lang'] = $course->lang;
$courseinfo['timecreated'] = $course->timecreated;
$courseinfo['timemodified'] = $course->timemodified;
$courseinfo['forcetheme'] = $course->theme;
$courseinfo['enablecompletion'] = $course->enablecompletion;
$courseinfo['completionstartonenrol'] = $course->completionstartonenrol;
$courseinfo['completionnotify'] = $course->completionnotify;
}
if ($courseadmin or $course->visible
or has_capability('moodle/course:viewhiddencourses', $context)) {
$coursesinfo[] = $courseinfo;
}
}
return $coursesinfo;
}
/**
* Returns description of method result value
*
* @return external_description
* @since Moodle 2.2
*/
public static function get_courses_returns() {
return new external_multiple_structure(
new external_single_structure(
array(
'id' => new external_value(PARAM_INT, 'course id'),
'shortname' => new external_value(PARAM_TEXT, 'course short name'),
'categoryid' => new external_value(PARAM_INT, 'category id'),
'categorysortorder' => new external_value(PARAM_INT,
'sort order into the category', VALUE_OPTIONAL),
'fullname' => new external_value(PARAM_TEXT, 'full name'),
'idnumber' => new external_value(PARAM_RAW, 'id number', VALUE_OPTIONAL),
'summary' => new external_value(PARAM_RAW, 'summary'),
'summaryformat' => new external_format_value('summary'),
'format' => new external_value(PARAM_PLUGIN,
'course format: weeks, topics, social, site,..'),
'showgrades' => new external_value(PARAM_INT,
'1 if grades are shown, otherwise 0', VALUE_OPTIONAL),
'newsitems' => new external_value(PARAM_INT,
'number of recent items appearing on the course page', VALUE_OPTIONAL),
'startdate' => new external_value(PARAM_INT,
'timestamp when the course start'),
'numsections' => new external_value(PARAM_INT, 'number of weeks/topics'),
'maxbytes' => new external_value(PARAM_INT,
'largest size of file that can be uploaded into the course',
VALUE_OPTIONAL),
'showreports' => new external_value(PARAM_INT,
'are activity report shown (yes = 1, no =0)', VALUE_OPTIONAL),
'visible' => new external_value(PARAM_INT,
'1: available to student, 0:not available', VALUE_OPTIONAL),
'hiddensections' => new external_value(PARAM_INT,
'How the hidden sections in the course are displayed to students',
VALUE_OPTIONAL),
'groupmode' => new external_value(PARAM_INT, 'no group, separate, visible',
VALUE_OPTIONAL),
'groupmodeforce' => new external_value(PARAM_INT, '1: yes, 0: no',
VALUE_OPTIONAL),
'defaultgroupingid' => new external_value(PARAM_INT, 'default grouping id',
VALUE_OPTIONAL),
'timecreated' => new external_value(PARAM_INT,
'timestamp when the course have been created', VALUE_OPTIONAL),
'timemodified' => new external_value(PARAM_INT,
'timestamp when the course have been modified', VALUE_OPTIONAL),
'enablecompletion' => new external_value(PARAM_INT,
'Enabled, control via completion and activity settings. Disbaled,
not shown in activity settings.',
VALUE_OPTIONAL),
'completionstartonenrol' => new external_value(PARAM_INT,
'1: begin tracking a student\'s progress in course completion
after course enrolment. 0: does not',
VALUE_OPTIONAL),
'completionnotify' => new external_value(PARAM_INT,
'1: yes 0: no', VALUE_OPTIONAL),
'lang' => new external_value(PARAM_SAFEDIR,
'forced course language', VALUE_OPTIONAL),
'forcetheme' => new external_value(PARAM_PLUGIN,
'name of the force theme', VALUE_OPTIONAL),
), 'course'
)
);
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.2
*/
public static function create_courses_parameters() {
$courseconfig = get_config('moodlecourse'); //needed for many default values
return new external_function_parameters(
array(
'courses' => new external_multiple_structure(
new external_single_structure(
array(
'fullname' => new external_value(PARAM_TEXT, 'full name'),
'shortname' => new external_value(PARAM_TEXT, 'course short name'),
'categoryid' => new external_value(PARAM_INT, 'category id'),
'idnumber' => new external_value(PARAM_RAW, 'id number', VALUE_OPTIONAL),
'summary' => new external_value(PARAM_RAW, 'summary', VALUE_OPTIONAL),
'summaryformat' => new external_format_value('summary', VALUE_DEFAULT),
'format' => new external_value(PARAM_PLUGIN,
'course format: weeks, topics, social, site,..',
VALUE_DEFAULT, $courseconfig->format),
'showgrades' => new external_value(PARAM_INT,
'1 if grades are shown, otherwise 0', VALUE_DEFAULT,
$courseconfig->showgrades),
'newsitems' => new external_value(PARAM_INT,
'number of recent items appearing on the course page',
VALUE_DEFAULT, $courseconfig->newsitems),
'startdate' => new external_value(PARAM_INT,
'timestamp when the course start', VALUE_OPTIONAL),
'numsections' => new external_value(PARAM_INT, 'number of weeks/topics',
VALUE_DEFAULT, $courseconfig->numsections),
'maxbytes' => new external_value(PARAM_INT,
'largest size of file that can be uploaded into the course',
VALUE_DEFAULT, $courseconfig->maxbytes),
'showreports' => new external_value(PARAM_INT,
'are activity report shown (yes = 1, no =0)', VALUE_DEFAULT,
$courseconfig->showreports),
'visible' => new external_value(PARAM_INT,
'1: available to student, 0:not available', VALUE_OPTIONAL),
'hiddensections' => new external_value(PARAM_INT,
'How the hidden sections in the course are displayed to students',
VALUE_DEFAULT, $courseconfig->hiddensections),
'groupmode' => new external_value(PARAM_INT, 'no group, separate, visible',
VALUE_DEFAULT, $courseconfig->groupmode),
'groupmodeforce' => new external_value(PARAM_INT, '1: yes, 0: no',
VALUE_DEFAULT, $courseconfig->groupmodeforce),
'defaultgroupingid' => new external_value(PARAM_INT, 'default grouping id',
VALUE_DEFAULT, 0),
'enablecompletion' => new external_value(PARAM_INT,
'Enabled, control via completion and activity settings. Disabled,
not shown in activity settings.',
VALUE_OPTIONAL),
'completionstartonenrol' => new external_value(PARAM_INT,
'1: begin tracking a student\'s progress in course completion after
course enrolment. 0: does not',
VALUE_OPTIONAL),
'completionnotify' => new external_value(PARAM_INT,
'1: yes 0: no', VALUE_OPTIONAL),
'lang' => new external_value(PARAM_SAFEDIR,
'forced course language', VALUE_OPTIONAL),
'forcetheme' => new external_value(PARAM_PLUGIN,
'name of the force theme', VALUE_OPTIONAL),
)
), 'courses to create'
)
)
);
}
/**
* Create courses
*
* @param array $courses
* @return array courses (id and shortname only)
* @since Moodle 2.2
*/
public static function create_courses($courses) {
global $CFG, $DB;
require_once($CFG->dirroot . "/course/lib.php");
require_once($CFG->libdir . '/completionlib.php');
$params = self::validate_parameters(self::create_courses_parameters(),
array('courses' => $courses));
$availablethemes = get_plugin_list('theme');
$availablelangs = get_string_manager()->get_list_of_translations();
$transaction = $DB->start_delegated_transaction();
foreach ($params['courses'] as $course) {
// Ensure the current user is allowed to run this function
$context = context_coursecat::instance($course['categoryid'], IGNORE_MISSING);
try {
self::validate_context($context);
} catch (Exception $e) {
$exceptionparam = new stdClass();
$exceptionparam->message = $e->getMessage();
$exceptionparam->catid = $course['categoryid'];
throw new moodle_exception('errorcatcontextnotvalid', 'webservice', '', $exceptionparam);
}
require_capability('moodle/course:create', $context);
// Make sure lang is valid
if (key_exists('lang', $course) and empty($availablelangs[$course['lang']])) {
throw new moodle_exception('errorinvalidparam', 'webservice', '', 'lang');
}
// Make sure theme is valid
if (key_exists('forcetheme', $course)) {
if (!empty($CFG->allowcoursethemes)) {
if (empty($availablethemes[$course['forcetheme']])) {
throw new moodle_exception('errorinvalidparam', 'webservice', '', 'forcetheme');
} else {
$course['theme'] = $course['forcetheme'];
}
}
}
//force visibility if ws user doesn't have the permission to set it
$category = $DB->get_record('course_categories', array('id' => $course['categoryid']));
if (!has_capability('moodle/course:visibility', $context)) {
$course['visible'] = $category->visible;
}
//set default value for completion
$courseconfig = get_config('moodlecourse');
if (completion_info::is_enabled_for_site()) {
if (!key_exists('enablecompletion', $course)) {
$course['enablecompletion'] = $courseconfig->enablecompletion;
}
if (!key_exists('completionstartonenrol', $course)) {
$course['completionstartonenrol'] = $courseconfig->completionstartonenrol;
}
} else {
$course['enablecompletion'] = 0;
$course['completionstartonenrol'] = 0;
}
$course['category'] = $course['categoryid'];
// Summary format.
$course['summaryformat'] = external_validate_format($course['summaryformat']);
//Note: create_course() core function check shortname, idnumber, category
$course['id'] = create_course((object) $course)->id;
$resultcourses[] = array('id' => $course['id'], 'shortname' => $course['shortname']);
}
$transaction->allow_commit();
return $resultcourses;
}
/**
* Returns description of method result value
*
* @return external_description
* @since Moodle 2.2
*/
public static function create_courses_returns() {
return new external_multiple_structure(
new external_single_structure(
array(
'id' => new external_value(PARAM_INT, 'course id'),
'shortname' => new external_value(PARAM_TEXT, 'short name'),
)
)
);
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.2
*/
public static function delete_courses_parameters() {
return new external_function_parameters(
array(
'courseids' => new external_multiple_structure(new external_value(PARAM_INT, 'course ID')),
)
);
}
/**
* Delete courses
*
* @param array $courseids A list of course ids
* @since Moodle 2.2
*/
public static function delete_courses($courseids) {
global $CFG, $DB;
require_once($CFG->dirroot."/course/lib.php");
// Parameter validation.
$params = self::validate_parameters(self::delete_courses_parameters(), array('courseids'=>$courseids));
$transaction = $DB->start_delegated_transaction();
foreach ($params['courseids'] as $courseid) {
$course = $DB->get_record('course', array('id'=>$courseid), '*', MUST_EXIST);
// Check if the context is valid.
$coursecontext = context_course::instance($course->id);
self::validate_context($coursecontext);
// Check if the current user has enought permissions.
if (!can_delete_course($courseid)) {
throw new moodle_exception('cannotdeletecategorycourse', 'error',
'', format_string($course->fullname)." (id: $courseid)");
}
delete_course($course, false);
}
$transaction->allow_commit();
return null;
}
/**
* Returns description of method result value
*
* @return external_description
* @since Moodle 2.2
*/
public static function delete_courses_returns() {
return null;
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.3
*/
public static function duplicate_course_parameters() {
return new external_function_parameters(
array(
'courseid' => new external_value(PARAM_INT, 'course to duplicate id'),
'fullname' => new external_value(PARAM_TEXT, 'duplicated course full name'),
'shortname' => new external_value(PARAM_TEXT, 'duplicated course short name'),
'categoryid' => new external_value(PARAM_INT, 'duplicated course category parent'),
'visible' => new external_value(PARAM_INT, 'duplicated course visible, default to yes', VALUE_DEFAULT, 1),
'options' => new external_multiple_structure(
new external_single_structure(
array(
'name' => new external_value(PARAM_ALPHAEXT, 'The backup option name:
"activities" (int) Include course activites (default to 1 that is equal to yes),
"blocks" (int) Include course blocks (default to 1 that is equal to yes),
"filters" (int) Include course filters (default to 1 that is equal to yes),
"users" (int) Include users (default to 0 that is equal to no),
"role_assignments" (int) Include role assignments (default to 0 that is equal to no),
"comments" (int) Include user comments (default to 0 that is equal to no),
"completion_information" (int) Include user course completion information (default to 0 that is equal to no),
"logs" (int) Include course logs (default to 0 that is equal to no),
"histories" (int) Include histories (default to 0 that is equal to no)'
),
'value' => new external_value(PARAM_RAW, 'the value for the option 1 (yes) or 0 (no)'
)
)
), VALUE_DEFAULT, array()
),
)
);
}
/**
* Duplicate a course
*
* @param int $courseid
* @param string $fullname Duplicated course fullname
* @param string $shortname Duplicated course shortname
* @param int $categoryid Duplicated course parent category id
* @param int $visible Duplicated course availability
* @param array $options List of backup options
* @return array New course info
* @since Moodle 2.3
*/
public static function duplicate_course($courseid, $fullname, $shortname, $categoryid, $visible = 1, $options = array()) {
global $CFG, $USER, $DB;
require_once($CFG->dirroot . '/backup/util/includes/backup_includes.php');
require_once($CFG->dirroot . '/backup/util/includes/restore_includes.php');
// Parameter validation.
$params = self::validate_parameters(
self::duplicate_course_parameters(),
array(
'courseid' => $courseid,
'fullname' => $fullname,
'shortname' => $shortname,
'categoryid' => $categoryid,
'visible' => $visible,
'options' => $options
)
);
// Context validation.
if (! ($course = $DB->get_record('course', array('id'=>$params['courseid'])))) {
throw new moodle_exception('invalidcourseid', 'error');
}
// Category where duplicated course is going to be created.
$categorycontext = context_coursecat::instance($params['categoryid']);
self::validate_context($categorycontext);
// Course to be duplicated.
$coursecontext = context_course::instance($course->id);
self::validate_context($coursecontext);
$backupdefaults = array(
'activities' => 1,
'blocks' => 1,
'filters' => 1,
'users' => 0,
'role_assignments' => 0,
'comments' => 0,
'completion_information' => 0,
'logs' => 0,
'histories' => 0
);
$backupsettings = array();
// Check for backup and restore options.
if (!empty($params['options'])) {
foreach ($params['options'] as $option) {
// Strict check for a correct value (allways 1 or 0, true or false).
$value = clean_param($option['value'], PARAM_INT);
if ($value !== 0 and $value !== 1) {
throw new moodle_exception('invalidextparam', 'webservice', '', $option['name']);
}
if (!isset($backupdefaults[$option['name']])) {
throw new moodle_exception('invalidextparam', 'webservice', '', $option['name']);
}
$backupsettings[$option['name']] = $value;
}
}
// Capability checking.
// The backup controller check for this currently, this may be redundant.
require_capability('moodle/course:create', $categorycontext);
require_capability('moodle/restore:restorecourse', $categorycontext);
require_capability('moodle/backup:backupcourse', $coursecontext);
if (!empty($backupsettings['users'])) {
require_capability('moodle/backup:userinfo', $coursecontext);
require_capability('moodle/restore:userinfo', $categorycontext);
}
// Check if the shortname is used.
if ($foundcourses = $DB->get_records('course', array('shortname'=>$shortname))) {
foreach ($foundcourses as $foundcourse) {
$foundcoursenames[] = $foundcourse->fullname;
}
$foundcoursenamestring = implode(',', $foundcoursenames);
throw new moodle_exception('shortnametaken', '', '', $foundcoursenamestring);
}
// Backup the course.
$bc = new backup_controller(backup::TYPE_1COURSE, $course->id, backup::FORMAT_MOODLE,
backup::INTERACTIVE_NO, backup::MODE_SAMESITE, $USER->id);
foreach ($backupsettings as $name => $value) {
$bc->get_plan()->get_setting($name)->set_value($value);
}
$backupid = $bc->get_backupid();
$backupbasepath = $bc->get_plan()->get_basepath();
$bc->execute_plan();
$results = $bc->get_results();
$file = $results['backup_destination'];
$bc->destroy();
// Restore the backup immediately.
// Check if we need to unzip the file because the backup temp dir does not contains backup files.
if (!file_exists($backupbasepath . "/moodle_backup.xml")) {
$file->extract_to_pathname(get_file_packer(), $backupbasepath);
}
// Create new course.
$newcourseid = restore_dbops::create_new_course($params['fullname'], $params['shortname'], $params['categoryid']);
$rc = new restore_controller($backupid, $newcourseid,
backup::INTERACTIVE_NO, backup::MODE_SAMESITE, $USER->id, backup::TARGET_NEW_COURSE);
foreach ($backupsettings as $name => $value) {
$setting = $rc->get_plan()->get_setting($name);
if ($setting->get_status() == backup_setting::NOT_LOCKED) {
$setting->set_value($value);
}
}
if (!$rc->execute_precheck()) {
$precheckresults = $rc->get_precheck_results();
if (is_array($precheckresults) && !empty($precheckresults['errors'])) {
if (empty($CFG->keeptempdirectoriesonbackup)) {
fulldelete($backupbasepath);
}
$errorinfo = '';
foreach ($precheckresults['errors'] as $error) {
$errorinfo .= $error;
}
if (array_key_exists('warnings', $precheckresults)) {
foreach ($precheckresults['warnings'] as $warning) {
$errorinfo .= $warning;
}
}
throw new moodle_exception('backupprecheckerrors', 'webservice', '', $errorinfo);
}
}
$rc->execute_plan();
$rc->destroy();
$course = $DB->get_record('course', array('id' => $newcourseid), '*', MUST_EXIST);
$course->fullname = $params['fullname'];
$course->shortname = $params['shortname'];
$course->visible = $params['visible'];
// Set shortname and fullname back.
$DB->update_record('course', $course);
if (empty($CFG->keeptempdirectoriesonbackup)) {
fulldelete($backupbasepath);
}
// Delete the course backup file created by this WebService. Originally located in the course backups area.
$file->delete();
return array('id' => $course->id, 'shortname' => $course->shortname);
}
/**
* Returns description of method result value
*
* @return external_description
* @since Moodle 2.3
*/
public static function duplicate_course_returns() {
return new external_single_structure(
array(
'id' => new external_value(PARAM_INT, 'course id'),
'shortname' => new external_value(PARAM_TEXT, 'short name'),
)
);
}
/**
* Returns description of method parameters for import_course
*
* @return external_function_parameters
* @since Moodle 2.4
*/
public static function import_course_parameters() {
return new external_function_parameters(
array(
'importfrom' => new external_value(PARAM_INT, 'the id of the course we are importing from'),
'importto' => new external_value(PARAM_INT, 'the id of the course we are importing to'),
'deletecontent' => new external_value(PARAM_INT, 'whether to delete the course content where we are importing to (default to 0 = No)', VALUE_DEFAULT, 0),
'options' => new external_multiple_structure(
new external_single_structure(
array(
'name' => new external_value(PARAM_ALPHA, 'The backup option name:
"activities" (int) Include course activites (default to 1 that is equal to yes),
"blocks" (int) Include course blocks (default to 1 that is equal to yes),
"filters" (int) Include course filters (default to 1 that is equal to yes)'
),
'value' => new external_value(PARAM_RAW, 'the value for the option 1 (yes) or 0 (no)'
)
)
), VALUE_DEFAULT, array()
),
)
);
}
/**
* Imports a course
*
* @param int $importfrom The id of the course we are importing from
* @param int $importto The id of the course we are importing to
* @param bool $deletecontent Whether to delete the course we are importing to content
* @param array $options List of backup options
* @return null
* @since Moodle 2.4
*/
public static function import_course($importfrom, $importto, $deletecontent = 0, $options = array()) {
global $CFG, $USER, $DB;
require_once($CFG->dirroot . '/backup/util/includes/backup_includes.php');
require_once($CFG->dirroot . '/backup/util/includes/restore_includes.php');
// Parameter validation.
$params = self::validate_parameters(
self::import_course_parameters(),
array(
'importfrom' => $importfrom,
'importto' => $importto,
'deletecontent' => $deletecontent,
'options' => $options
)
);
if ($params['deletecontent'] !== 0 and $params['deletecontent'] !== 1) {
throw new moodle_exception('invalidextparam', 'webservice', '', $option['deletecontent']);
}
// Context validation.
if (! ($importfrom = $DB->get_record('course', array('id'=>$params['importfrom'])))) {
throw new moodle_exception('invalidcourseid', 'error');
}
if (! ($importto = $DB->get_record('course', array('id'=>$params['importto'])))) {
throw new moodle_exception('invalidcourseid', 'error');
}
$importfromcontext = context_course::instance($importfrom->id);
self::validate_context($importfromcontext);
$importtocontext = context_course::instance($importto->id);
self::validate_context($importtocontext);
$backupdefaults = array(
'activities' => 1,
'blocks' => 1,
'filters' => 1
);
$backupsettings = array();
// Check for backup and restore options.
if (!empty($params['options'])) {
foreach ($params['options'] as $option) {
// Strict check for a correct value (allways 1 or 0, true or false).
$value = clean_param($option['value'], PARAM_INT);
if ($value !== 0 and $value !== 1) {
throw new moodle_exception('invalidextparam', 'webservice', '', $option['name']);
}
if (!isset($backupdefaults[$option['name']])) {
throw new moodle_exception('invalidextparam', 'webservice', '', $option['name']);
}
$backupsettings[$option['name']] = $value;
}
}
// Capability checking.
require_capability('moodle/backup:backuptargetimport', $importfromcontext);
require_capability('moodle/restore:restoretargetimport', $importtocontext);
$bc = new backup_controller(backup::TYPE_1COURSE, $importfrom->id, backup::FORMAT_MOODLE,
backup::INTERACTIVE_NO, backup::MODE_IMPORT, $USER->id);
foreach ($backupsettings as $name => $value) {
$bc->get_plan()->get_setting($name)->set_value($value);
}
$backupid = $bc->get_backupid();