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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/>.
/**
* Self enrolment plugin.
*
* @package enrol_self
* @copyright 2010 Petr Skoda {@link http://skodak.org}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
/**
* Self enrolment plugin implementation.
* @author Petr Skoda
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class enrol_self_plugin extends enrol_plugin {
protected $lasternoller = null;
protected $lasternollerinstanceid = 0;
/**
* Returns optional enrolment information icons.
*
* This is used in course list for quick overview of enrolment options.
*
* We are not using single instance parameter because sometimes
* we might want to prevent icon repetition when multiple instances
* of one type exist. One instance may also produce several icons.
*
* @param array $instances all enrol instances of this type in one course
* @return array of pix_icon
*/
public function get_info_icons(array $instances) {
$key = false;
$nokey = false;
foreach ($instances as $instance) {
if ($this->can_self_enrol($instance, false) !== true) {
// User can not enrol himself.
// Note that we do not check here if user is already enrolled for performance reasons -
// such check would execute extra queries for each course in the list of courses and
// would hide self-enrolment icons from guests.
continue;
}
if ($instance->password or $instance->customint1) {
$key = true;
} else {
$nokey = true;
}
}
$icons = array();
if ($nokey) {
$icons[] = new pix_icon('withoutkey', get_string('pluginname', 'enrol_self'), 'enrol_self');
}
if ($key) {
$icons[] = new pix_icon('withkey', get_string('pluginname', 'enrol_self'), 'enrol_self');
}
return $icons;
}
/**
* Returns localised name of enrol instance
*
* @param stdClass $instance (null is accepted too)
* @return string
*/
public function get_instance_name($instance) {
global $DB;
if (empty($instance->name)) {
if (!empty($instance->roleid) and $role = $DB->get_record('role', array('id'=>$instance->roleid))) {
$role = ' (' . role_get_name($role, context_course::instance($instance->courseid, IGNORE_MISSING)) . ')';
} else {
$role = '';
}
$enrol = $this->get_name();
return get_string('pluginname', 'enrol_'.$enrol) . $role;
} else {
return format_string($instance->name);
}
}
public function roles_protected() {
// Users may tweak the roles later.
return false;
}
public function allow_unenrol(stdClass $instance) {
// Users with unenrol cap may unenrol other users manually manually.
return true;
}
public function allow_manage(stdClass $instance) {
// Users with manage cap may tweak period and status.
return true;
}
public function show_enrolme_link(stdClass $instance) {
if (true !== $this->can_self_enrol($instance, false)) {
return false;
}
return true;
}
/**
* Return true if we can add a new instance to this course.
*
* @param int $courseid
* @return boolean
*/
public function can_add_instance($courseid) {
$context = context_course::instance($courseid, MUST_EXIST);
if (!has_capability('moodle/course:enrolconfig', $context) or !has_capability('enrol/self:config', $context)) {
return false;
}
return true;
}
/**
* Self enrol user to course
*
* @param stdClass $instance enrolment instance
* @param stdClass $data data needed for enrolment.
* @return bool|array true if enroled else eddor code and messege
*/
public function enrol_self(stdClass $instance, $data = null) {
global $DB, $USER, $CFG;
// Don't enrol user if password is not passed when required.
if ($instance->password && !isset($data->enrolpassword)) {
return;
}
$timestart = time();
if ($instance->enrolperiod) {
$timeend = $timestart + $instance->enrolperiod;
} else {
$timeend = 0;
}
$this->enrol_user($instance, $USER->id, $instance->roleid, $timestart, $timeend);
\core\notification::success(get_string('youenrolledincourse', 'enrol'));
if ($instance->password and $instance->customint1 and $data->enrolpassword !== $instance->password) {
// It must be a group enrolment, let's assign group too.
$groups = $DB->get_records('groups', array('courseid'=>$instance->courseid), 'id', 'id, enrolmentkey');
foreach ($groups as $group) {
if (empty($group->enrolmentkey)) {
continue;
}
if ($group->enrolmentkey === $data->enrolpassword) {
// Add user to group.
require_once($CFG->dirroot.'/group/lib.php');
groups_add_member($group->id, $USER->id);
break;
}
}
}
// Send welcome message.
if ($instance->customint4 != ENROL_DO_NOT_SEND_EMAIL) {
$this->email_welcome_message($instance, $USER);
}
}
/**
* Creates course enrol form, checks if form submitted
* and enrols user if necessary. It can also redirect.
*
* @param stdClass $instance
* @return string html text, usually a form in a text box
*/
public function enrol_page_hook(stdClass $instance) {
global $CFG, $OUTPUT, $USER;
require_once("$CFG->dirroot/enrol/self/locallib.php");
$enrolstatus = $this->can_self_enrol($instance);
if (true === $enrolstatus) {
// This user can self enrol using this instance.
$form = new enrol_self_enrol_form(null, $instance);
$instanceid = optional_param('instance', 0, PARAM_INT);
if ($instance->id == $instanceid) {
if ($data = $form->get_data()) {
$this->enrol_self($instance, $data);
}
}
} else {
// This user can not self enrol using this instance. Using an empty form to keep
// the UI consistent with other enrolment plugins that returns a form.
$data = new stdClass();
$data->header = $this->get_instance_name($instance);
$data->info = $enrolstatus;
// The can_self_enrol call returns a button to the login page if the user is a
// guest, setting the login url to the form if that is the case.
$url = isguestuser() ? get_login_url() : null;
$form = new enrol_self_empty_form($url, $data);
}
ob_start();
$form->display();
$output = ob_get_clean();
return $OUTPUT->box($output);
}
/**
* Checks if user can self enrol.
*
* @param stdClass $instance enrolment instance
* @param bool $checkuserenrolment if true will check if user enrolment is inactive.
* used by navigation to improve performance.
* @return bool|string true if successful, else error message or false.
*/
public function can_self_enrol(stdClass $instance, $checkuserenrolment = true) {
global $CFG, $DB, $OUTPUT, $USER;
if ($checkuserenrolment) {
if (isguestuser()) {
// Can not enrol guest.
return get_string('noguestaccess', 'enrol') . $OUTPUT->continue_button(get_login_url());
}
// Check if user is already enroled.
if ($DB->get_record('user_enrolments', array('userid' => $USER->id, 'enrolid' => $instance->id))) {
return get_string('canntenrol', 'enrol_self');
}
}
if ($instance->status != ENROL_INSTANCE_ENABLED) {
return get_string('canntenrol', 'enrol_self');
}
if ($instance->enrolstartdate != 0 and $instance->enrolstartdate > time()) {
return get_string('canntenrolearly', 'enrol_self', userdate($instance->enrolstartdate));
}
if ($instance->enrolenddate != 0 and $instance->enrolenddate < time()) {
return get_string('canntenrollate', 'enrol_self', userdate($instance->enrolenddate));
}
if (!$instance->customint6) {
// New enrols not allowed.
return get_string('canntenrol', 'enrol_self');
}
if ($DB->record_exists('user_enrolments', array('userid' => $USER->id, 'enrolid' => $instance->id))) {
return get_string('canntenrol', 'enrol_self');
}
if ($instance->customint3 > 0) {
// Max enrol limit specified.
$count = $DB->count_records('user_enrolments', array('enrolid' => $instance->id));
if ($count >= $instance->customint3) {
// Bad luck, no more self enrolments here.
return get_string('maxenrolledreached', 'enrol_self');
}
}
if ($instance->customint5) {
require_once("$CFG->dirroot/cohort/lib.php");
if (!cohort_is_member($instance->customint5, $USER->id)) {
$cohort = $DB->get_record('cohort', array('id' => $instance->customint5));
if (!$cohort) {
return null;
}
$a = format_string($cohort->name, true, array('context' => context::instance_by_id($cohort->contextid)));
return markdown_to_html(get_string('cohortnonmemberinfo', 'enrol_self', $a));
}
}
return true;
}
/**
* Return information for enrolment instance containing list of parameters required
* for enrolment, name of enrolment plugin etc.
*
* @param stdClass $instance enrolment instance
* @return stdClass instance info.
*/
public function get_enrol_info(stdClass $instance) {
$instanceinfo = new stdClass();
$instanceinfo->id = $instance->id;
$instanceinfo->courseid = $instance->courseid;
$instanceinfo->type = $this->get_name();
$instanceinfo->name = $this->get_instance_name($instance);
$instanceinfo->status = $this->can_self_enrol($instance);
if ($instance->password) {
$instanceinfo->requiredparam = new stdClass();
$instanceinfo->requiredparam->enrolpassword = get_string('password', 'enrol_self');
}
// If enrolment is possible and password is required then return ws function name to get more information.
if ((true === $instanceinfo->status) && $instance->password) {
$instanceinfo->wsfunction = 'enrol_self_get_instance_info';
}
return $instanceinfo;
}
/**
* Add new instance of enrol plugin with default settings.
* @param stdClass $course
* @return int id of new instance
*/
public function add_default_instance($course) {
$fields = $this->get_instance_defaults();
if ($this->get_config('requirepassword')) {
$fields['password'] = generate_password(20);
}
return $this->add_instance($course, $fields);
}
/**
* Returns defaults for new instances.
* @return array
*/
public function get_instance_defaults() {
$expirynotify = $this->get_config('expirynotify');
if ($expirynotify == 2) {
$expirynotify = 1;
$notifyall = 1;
} else {
$notifyall = 0;
}
$fields = array();
$fields['status'] = $this->get_config('status');
$fields['roleid'] = $this->get_config('roleid');
$fields['enrolperiod'] = $this->get_config('enrolperiod');
$fields['expirynotify'] = $expirynotify;
$fields['notifyall'] = $notifyall;
$fields['expirythreshold'] = $this->get_config('expirythreshold');
$fields['customint1'] = $this->get_config('groupkey');
$fields['customint2'] = $this->get_config('longtimenosee');
$fields['customint3'] = $this->get_config('maxenrolled');
$fields['customint4'] = $this->get_config('sendcoursewelcomemessage');
$fields['customint5'] = 0;
$fields['customint6'] = $this->get_config('newenrols');
return $fields;
}
/**
* Send welcome email to specified user.
*
* @param stdClass $instance
* @param stdClass $user user record
* @return void
*/
protected function email_welcome_message($instance, $user) {
global $CFG, $DB;
$course = $DB->get_record('course', array('id'=>$instance->courseid), '*', MUST_EXIST);
$context = context_course::instance($course->id);
$a = new stdClass();
$a->coursename = format_string($course->fullname, true, array('context'=>$context));
$a->profileurl = "$CFG->wwwroot/user/view.php?id=$user->id&course=$course->id";
if (trim($instance->customtext1) !== '') {
$message = $instance->customtext1;
$key = array('{$a->coursename}', '{$a->profileurl}', '{$a->fullname}', '{$a->email}');
$value = array($a->coursename, $a->profileurl, fullname($user), $user->email);
$message = str_replace($key, $value, $message);
if (strpos($message, '<') === false) {
// Plain text only.
$messagetext = $message;
$messagehtml = text_to_html($messagetext, null, false, true);
} else {
// This is most probably the tag/newline soup known as FORMAT_MOODLE.
$messagehtml = format_text($message, FORMAT_MOODLE, array('context'=>$context, 'para'=>false, 'newlines'=>true, 'filter'=>true));
$messagetext = html_to_text($messagehtml);
}
} else {
$messagetext = get_string('welcometocoursetext', 'enrol_self', $a);
$messagehtml = text_to_html($messagetext, null, false, true);
}
$subject = get_string('welcometocourse', 'enrol_self', format_string($course->fullname, true, array('context'=>$context)));
$sendoption = $instance->customint4;
$contact = $this->get_welcome_email_contact($sendoption, $context);
// Directly emailing welcome message rather than using messaging.
email_to_user($user, $contact, $subject, $messagetext, $messagehtml);
}
/**
* Sync all meta course links.
*
* @param progress_trace $trace
* @param int $courseid one course, empty mean all
* @return int 0 means ok, 1 means error, 2 means plugin disabled
*/
public function sync(progress_trace $trace, $courseid = null) {
global $DB;
if (!enrol_is_enabled('self')) {
$trace->finished();
return 2;
}
// Unfortunately this may take a long time, execution can be interrupted safely here.
core_php_time_limit::raise();
raise_memory_limit(MEMORY_HUGE);
$trace->output('Verifying self-enrolments...');
$params = array('now'=>time(), 'useractive'=>ENROL_USER_ACTIVE, 'courselevel'=>CONTEXT_COURSE);
$coursesql = "";
if ($courseid) {
$coursesql = "AND e.courseid = :courseid";
$params['courseid'] = $courseid;
}
// Note: the logic of self enrolment guarantees that user logged in at least once (=== u.lastaccess set)
// and that user accessed course at least once too (=== user_lastaccess record exists).
// First deal with users that did not log in for a really long time - they do not have user_lastaccess records.
$sql = "SELECT e.*, ue.userid
FROM {user_enrolments} ue
JOIN {enrol} e ON (e.id = ue.enrolid AND e.enrol = 'self' AND e.customint2 > 0)
JOIN {user} u ON u.id = ue.userid
WHERE :now - u.lastaccess > e.customint2
$coursesql";
$rs = $DB->get_recordset_sql($sql, $params);
foreach ($rs as $instance) {
$userid = $instance->userid;
unset($instance->userid);
$this->unenrol_user($instance, $userid);
$days = $instance->customint2 / DAYSECS;
$trace->output("unenrolling user $userid from course $instance->courseid " .
"as they did not log in for at least $days days", 1);
}
$rs->close();
// Now unenrol from course user did not visit for a long time.
$sql = "SELECT e.*, ue.userid
FROM {user_enrolments} ue
JOIN {enrol} e ON (e.id = ue.enrolid AND e.enrol = 'self' AND e.customint2 > 0)
JOIN {user_lastaccess} ul ON (ul.userid = ue.userid AND ul.courseid = e.courseid)
WHERE :now - ul.timeaccess > e.customint2
$coursesql";
$rs = $DB->get_recordset_sql($sql, $params);
foreach ($rs as $instance) {
$userid = $instance->userid;
unset($instance->userid);
$this->unenrol_user($instance, $userid);
$days = $instance->customint2 / DAYSECS;
$trace->output("unenrolling user $userid from course $instance->courseid " .
"as they did not access the course for at least $days days", 1);
}
$rs->close();
$trace->output('...user self-enrolment updates finished.');
$trace->finished();
$this->process_expirations($trace, $courseid);
return 0;
}
/**
* Returns the user who is responsible for self enrolments in given instance.
*
* Usually it is the first editing teacher - the person with "highest authority"
* as defined by sort_by_roleassignment_authority() having 'enrol/self:manage'
* capability.
*
* @param int $instanceid enrolment instance id
* @return stdClass user record
*/
protected function get_enroller($instanceid) {
global $DB;
if ($this->lasternollerinstanceid == $instanceid and $this->lasternoller) {
return $this->lasternoller;
}
$instance = $DB->get_record('enrol', array('id'=>$instanceid, 'enrol'=>$this->get_name()), '*', MUST_EXIST);
$context = context_course::instance($instance->courseid);
if ($users = get_enrolled_users($context, 'enrol/self:manage')) {
$users = sort_by_roleassignment_authority($users, $context);
$this->lasternoller = reset($users);
unset($users);
} else {
$this->lasternoller = parent::get_enroller($instanceid);
}
$this->lasternollerinstanceid = $instanceid;
return $this->lasternoller;
}
/**
* Restore instance and map settings.
*
* @param restore_enrolments_structure_step $step
* @param stdClass $data
* @param stdClass $course
* @param int $oldid
*/
public function restore_instance(restore_enrolments_structure_step $step, stdClass $data, $course, $oldid) {
global $DB;
if ($step->get_task()->get_target() == backup::TARGET_NEW_COURSE) {
$merge = false;
} else {
$merge = array(
'courseid' => $data->courseid,
'enrol' => $this->get_name(),
'status' => $data->status,
'roleid' => $data->roleid,
);
}
if ($merge and $instances = $DB->get_records('enrol', $merge, 'id')) {
$instance = reset($instances);
$instanceid = $instance->id;
} else {
if (!empty($data->customint5)) {
if ($step->get_task()->is_samesite()) {
// Keep cohort restriction unchanged - we are on the same site.
} else {
// Use some id that can not exist in order to prevent self enrolment,
// because we do not know what cohort it is in this site.
$data->customint5 = -1;
}
}
$instanceid = $this->add_instance($course, (array)$data);
}
$step->set_mapping('enrol', $oldid, $instanceid);
}
/**
* Restore user enrolment.
*
* @param restore_enrolments_structure_step $step
* @param stdClass $data
* @param stdClass $instance
* @param int $oldinstancestatus
* @param int $userid
*/
public function restore_user_enrolment(restore_enrolments_structure_step $step, $data, $instance, $userid, $oldinstancestatus) {
$this->enrol_user($instance, $userid, null, $data->timestart, $data->timeend, $data->status);
}
/**
* Restore role assignment.
*
* @param stdClass $instance
* @param int $roleid
* @param int $userid
* @param int $contextid
*/
public function restore_role_assignment($instance, $roleid, $userid, $contextid) {
// This is necessary only because we may migrate other types to this instance,
// we do not use component in manual or self enrol.
role_assign($roleid, $userid, $contextid, '', 0);
}
/**
* Is it possible to delete enrol instance via standard UI?
*
* @param stdClass $instance
* @return bool
*/
public function can_delete_instance($instance) {
$context = context_course::instance($instance->courseid);
return has_capability('enrol/self:config', $context);
}
/**
* Is it possible to hide/show enrol instance via standard UI?
*
* @param stdClass $instance
* @return bool
*/
public function can_hide_show_instance($instance) {
$context = context_course::instance($instance->courseid);
if (!has_capability('enrol/self:config', $context)) {
return false;
}
// If the instance is currently disabled, before it can be enabled,
// we must check whether the password meets the password policies.
if ($instance->status == ENROL_INSTANCE_DISABLED) {
if ($this->get_config('requirepassword')) {
if (empty($instance->password)) {
return false;
}
}
// Only check the password if it is set.
if (!empty($instance->password) && $this->get_config('usepasswordpolicy')) {
if (!check_password_policy($instance->password, $errmsg)) {
return false;
}
}
}
return true;
}
/**
* Return an array of valid options for the status.
*
* @return array
*/
protected function get_status_options() {
$options = array(ENROL_INSTANCE_ENABLED => get_string('yes'),
ENROL_INSTANCE_DISABLED => get_string('no'));
return $options;
}
/**
* Return an array of valid options for the newenrols property.
*
* @return array
*/
protected function get_newenrols_options() {
$options = array(1 => get_string('yes'), 0 => get_string('no'));
return $options;
}
/**
* Return an array of valid options for the groupkey property.
*
* @return array
*/
protected function get_groupkey_options() {
$options = array(1 => get_string('yes'), 0 => get_string('no'));
return $options;
}
/**
* Return an array of valid options for the expirynotify property.
*
* @return array
*/
protected function get_expirynotify_options() {
$options = array(0 => get_string('no'),
1 => get_string('expirynotifyenroller', 'enrol_self'),
2 => get_string('expirynotifyall', 'enrol_self'));
return $options;
}
/**
* Return an array of valid options for the longtimenosee property.
*
* @return array
*/
protected function get_longtimenosee_options() {
$options = array(0 => get_string('never'),
1800 * 3600 * 24 => get_string('numdays', '', 1800),
1000 * 3600 * 24 => get_string('numdays', '', 1000),
365 * 3600 * 24 => get_string('numdays', '', 365),
180 * 3600 * 24 => get_string('numdays', '', 180),
150 * 3600 * 24 => get_string('numdays', '', 150),
120 * 3600 * 24 => get_string('numdays', '', 120),
90 * 3600 * 24 => get_string('numdays', '', 90),
60 * 3600 * 24 => get_string('numdays', '', 60),
30 * 3600 * 24 => get_string('numdays', '', 30),
21 * 3600 * 24 => get_string('numdays', '', 21),
14 * 3600 * 24 => get_string('numdays', '', 14),
7 * 3600 * 24 => get_string('numdays', '', 7));
return $options;
}
/**
* The self enrollment plugin has several bulk operations that can be performed.
* @param course_enrolment_manager $manager
* @return array
*/
public function get_bulk_operations(course_enrolment_manager $manager) {
global $CFG;
require_once($CFG->dirroot.'/enrol/self/locallib.php');
$context = $manager->get_context();
$bulkoperations = array();
if (has_capability("enrol/self:manage", $context)) {
$bulkoperations['editselectedusers'] = new enrol_self_editselectedusers_operation($manager, $this);
}
if (has_capability("enrol/self:unenrol", $context)) {
$bulkoperations['deleteselectedusers'] = new enrol_self_deleteselectedusers_operation($manager, $this);
}
return $bulkoperations;
}
/**
* Add elements to the edit instance form.
*
* @param stdClass $instance
* @param MoodleQuickForm $mform
* @param context $context
* @return bool
*/
public function edit_instance_form($instance, MoodleQuickForm $mform, $context) {
global $CFG, $DB;
// Merge these two settings to one value for the single selection element.
if ($instance->notifyall and $instance->expirynotify) {
$instance->expirynotify = 2;
}
unset($instance->notifyall);
$nameattribs = array('size' => '20', 'maxlength' => '255');
$mform->addElement('text', 'name', get_string('custominstancename', 'enrol'), $nameattribs);
$mform->setType('name', PARAM_TEXT);
$mform->addRule('name', get_string('maximumchars', '', 255), 'maxlength', 255, 'server');
$options = $this->get_status_options();
$mform->addElement('select', 'status', get_string('status', 'enrol_self'), $options);
$mform->addHelpButton('status', 'status', 'enrol_self');
$options = $this->get_newenrols_options();
$mform->addElement('select', 'customint6', get_string('newenrols', 'enrol_self'), $options);
$mform->addHelpButton('customint6', 'newenrols', 'enrol_self');
$mform->disabledIf('customint6', 'status', 'eq', ENROL_INSTANCE_DISABLED);
$passattribs = array('size' => '20', 'maxlength' => '50');
$mform->addElement('passwordunmask', 'password', get_string('password', 'enrol_self'), $passattribs);
$mform->addHelpButton('password', 'password', 'enrol_self');
if (empty($instance->id) and $this->get_config('requirepassword')) {
$mform->addRule('password', get_string('required'), 'required', null, 'client');
}
$mform->addRule('password', get_string('maximumchars', '', 50), 'maxlength', 50, 'server');
$options = $this->get_groupkey_options();
$mform->addElement('select', 'customint1', get_string('groupkey', 'enrol_self'), $options);
$mform->addHelpButton('customint1', 'groupkey', 'enrol_self');
$roles = $this->extend_assignable_roles($context, $instance->roleid);
$mform->addElement('select', 'roleid', get_string('role', 'enrol_self'), $roles);
$options = array('optional' => true, 'defaultunit' => 86400);
$mform->addElement('duration', 'enrolperiod', get_string('enrolperiod', 'enrol_self'), $options);
$mform->addHelpButton('enrolperiod', 'enrolperiod', 'enrol_self');
$options = $this->get_expirynotify_options();
$mform->addElement('select', 'expirynotify', get_string('expirynotify', 'core_enrol'), $options);
$mform->addHelpButton('expirynotify', 'expirynotify', 'core_enrol');
$options = array('optional' => false, 'defaultunit' => 86400);
$mform->addElement('duration', 'expirythreshold', get_string('expirythreshold', 'core_enrol'), $options);
$mform->addHelpButton('expirythreshold', 'expirythreshold', 'core_enrol');
$mform->disabledIf('expirythreshold', 'expirynotify', 'eq', 0);
$options = array('optional' => true);
$mform->addElement('date_time_selector', 'enrolstartdate', get_string('enrolstartdate', 'enrol_self'), $options);
$mform->setDefault('enrolstartdate', 0);
$mform->addHelpButton('enrolstartdate', 'enrolstartdate', 'enrol_self');
$options = array('optional' => true);
$mform->addElement('date_time_selector', 'enrolenddate', get_string('enrolenddate', 'enrol_self'), $options);
$mform->setDefault('enrolenddate', 0);
$mform->addHelpButton('enrolenddate', 'enrolenddate', 'enrol_self');
$options = $this->get_longtimenosee_options();
$mform->addElement('select', 'customint2', get_string('longtimenosee', 'enrol_self'), $options);
$mform->addHelpButton('customint2', 'longtimenosee', 'enrol_self');
$mform->addElement('text', 'customint3', get_string('maxenrolled', 'enrol_self'));
$mform->addHelpButton('customint3', 'maxenrolled', 'enrol_self');
$mform->setType('customint3', PARAM_INT);
require_once($CFG->dirroot.'/cohort/lib.php');
$cohorts = array(0 => get_string('no'));
$allcohorts = cohort_get_available_cohorts($context, 0, 0, 0);
if ($instance->customint5 && !isset($allcohorts[$instance->customint5])) {
$c = $DB->get_record('cohort',
array('id' => $instance->customint5),
'id, name, idnumber, contextid, visible',
IGNORE_MISSING);
if ($c) {
// Current cohort was not found because current user can not see it. Still keep it.
$allcohorts[$instance->customint5] = $c;
}
}
foreach ($allcohorts as $c) {
$cohorts[$c->id] = format_string($c->name, true, array('context' => context::instance_by_id($c->contextid)));
if ($c->idnumber) {
$cohorts[$c->id] .= ' ['.s($c->idnumber).']';
}
}
if ($instance->customint5 && !isset($allcohorts[$instance->customint5])) {
// Somebody deleted a cohort, better keep the wrong value so that random ppl can not enrol.
$cohorts[$instance->customint5] = get_string('unknowncohort', 'cohort', $instance->customint5);
}
if (count($cohorts) > 1) {
$mform->addElement('select', 'customint5', get_string('cohortonly', 'enrol_self'), $cohorts);
$mform->addHelpButton('customint5', 'cohortonly', 'enrol_self');
} else {
$mform->addElement('hidden', 'customint5');
$mform->setType('customint5', PARAM_INT);
$mform->setConstant('customint5', 0);
}
$mform->addElement('select', 'customint4', get_string('sendcoursewelcomemessage', 'enrol_self'),
enrol_send_welcome_email_options());
$mform->addHelpButton('customint4', 'sendcoursewelcomemessage', 'enrol_self');
$options = array('cols' => '60', 'rows' => '8');
$mform->addElement('textarea', 'customtext1', get_string('customwelcomemessage', 'enrol_self'), $options);
$mform->addHelpButton('customtext1', 'customwelcomemessage', 'enrol_self');
if (enrol_accessing_via_instance($instance)) {
$warntext = get_string('instanceeditselfwarningtext', 'core_enrol');
$mform->addElement('static', 'selfwarn', get_string('instanceeditselfwarning', 'core_enrol'), $warntext);
}
}
/**
* We are a good plugin and don't invent our own UI/validation code path.
*
* @return boolean
*/
public function use_standard_editing_ui() {
return true;
}
/**
* Perform custom validation of the data used to edit the instance.
*
* @param array $data array of ("fieldname"=>value) of submitted data
* @param array $files array of uploaded files "element_name"=>tmp_file_path
* @param object $instance The instance loaded from the DB
* @param context $context The context of the instance we are editing
* @return array of "element_name"=>"error_description" if there are errors,
* or an empty array if everything is OK.
* @return void
*/
public function edit_instance_validation($data, $files, $instance, $context) {
$errors = array();
$checkpassword = false;
if ($instance->id) {
// Check the password if we are enabling the plugin again.
if (($instance->status == ENROL_INSTANCE_DISABLED) && ($data['status'] == ENROL_INSTANCE_ENABLED)) {
$checkpassword = true;
}
// Check the password if the instance is enabled and the password has changed.
if (($data['status'] == ENROL_INSTANCE_ENABLED) && ($instance->password !== $data['password'])) {
$checkpassword = true;
}
} else {
$checkpassword = true;
}
if ($checkpassword) {
$require = $this->get_config('requirepassword');
$policy = $this->get_config('usepasswordpolicy');
if ($require and trim($data['password']) === '') {
$errors['password'] = get_string('required');
} else if (!empty($data['password']) && $policy) {
$errmsg = '';
if (!check_password_policy($data['password'], $errmsg)) {
$errors['password'] = $errmsg;
}
}
}
if ($data['status'] == ENROL_INSTANCE_ENABLED) {
if (!empty($data['enrolenddate']) and $data['enrolenddate'] < $data['enrolstartdate']) {
$errors['enrolenddate'] = get_string('enrolenddaterror', 'enrol_self');
}
}
if ($data['expirynotify'] > 0 and $data['expirythreshold'] < 86400) {
$errors['expirythreshold'] = get_string('errorthresholdlow', 'core_enrol');
}
// Now these ones are checked by quickforms, but we may be called by the upload enrolments tool, or a webservive.
if (core_text::strlen($data['name']) > 255) {
$errors['name'] = get_string('err_maxlength', 'form', 255);
}
$validstatus = array_keys($this->get_status_options());
$validnewenrols = array_keys($this->get_newenrols_options());
if (core_text::strlen($data['password']) > 50) {
$errors['name'] = get_string('err_maxlength', 'form', 50);
}
$validgroupkey = array_keys($this->get_groupkey_options());
$context = context_course::instance($instance->courseid);
$validroles = array_keys($this->extend_assignable_roles($context, $instance->roleid));
$validexpirynotify = array_keys($this->get_expirynotify_options());
$validlongtimenosee = array_keys($this->get_longtimenosee_options());
$tovalidate = array(
'enrolstartdate' => PARAM_INT,
'enrolenddate' => PARAM_INT,
'name' => PARAM_TEXT,
'customint1' => $validgroupkey,
'customint2' => $validlongtimenosee,
'customint3' => PARAM_INT,
'customint4' => PARAM_INT,
'customint5' => PARAM_INT,
'customint6' => $validnewenrols,
'status' => $validstatus,
'enrolperiod' => PARAM_INT,
'expirynotify' => $validexpirynotify,
'roleid' => $validroles
);
if ($data['expirynotify'] != 0) {
$tovalidate['expirythreshold'] = PARAM_INT;
}
$typeerrors = $this->validate_param_types($data, $tovalidate);
$errors = array_merge($errors, $typeerrors);
return $errors;
}
/**
* Add new instance of enrol plugin.
* @param object $course
* @param array $fields instance fields
* @return int id of new instance, null if can not be created
*/
public function add_instance($course, array $fields = null) {
// In the form we are representing 2 db columns with one field.
if (!empty($fields) && !empty($fields['expirynotify'])) {
if ($fields['expirynotify'] == 2) {
$fields['expirynotify'] = 1;
$fields['notifyall'] = 1;
} else {
$fields['notifyall'] = 0;
}
}
return parent::add_instance($course, $fields);
}
/**
* Update instance of enrol plugin.
* @param stdClass $instance
* @param stdClass $data modified instance fields
* @return boolean
*/
public function update_instance($instance, $data) {
// In the form we are representing 2 db columns with one field.
if ($data->expirynotify == 2) {
$data->expirynotify = 1;
$data->notifyall = 1;
} else {
$data->notifyall = 0;
}
// Keep previous/default value of disabled expirythreshold option.
if (!$data->expirynotify) {
$data->expirythreshold = $instance->expirythreshold;
}
// Add previous value of newenrols if disabled.
if (!isset($data->customint6)) {
$data->customint6 = $instance->customint6;
}
return parent::update_instance($instance, $data);
}
/**
* Gets a list of roles that this user can assign for the course as the default for self-enrolment.
*
* @param context $context the context.
* @param integer $defaultrole the id of the role that is set as the default for self-enrolment
* @return array index is the role id, value is the role name
*/
public function extend_assignable_roles($context, $defaultrole) {
global $DB;
$roles = get_assignable_roles($context, ROLENAME_BOTH);
if (!isset($roles[$defaultrole])) {
if ($role = $DB->get_record('role', array('id' => $defaultrole))) {
$roles[$defaultrole] = role_get_name($role, $context, ROLENAME_BOTH);
}
}
return $roles;
}
/**
* Get the "from" contact which the email will be sent from.
*
* @param int $sendoption send email from constant ENROL_SEND_EMAIL_FROM_*
* @param $context context where the user will be fetched
* @return mixed|stdClass the contact user object.
*/
public function get_welcome_email_contact($sendoption, $context) {
global $CFG;
$contact = null;
// Send as the first user assigned as the course contact.
if ($sendoption == ENROL_SEND_EMAIL_FROM_COURSE_CONTACT) {
$rusers = array();
if (!empty($CFG->coursecontact)) {
$croles = explode(',', $CFG->coursecontact);
list($sort, $sortparams) = users_order_by_sql('u');
// We only use the first user.
$i = 0;
do {
$allnames = get_all_user_name_fields(true, 'u');
$rusers = get_role_users($croles[$i], $context, true, 'u.id, u.confirmed, u.username, '. $allnames . ',
u.email, r.sortorder, ra.id', 'r.sortorder, ra.id ASC, ' . $sort, null, '', '', '', '', $sortparams);
$i++;
} while (empty($rusers) && !empty($croles[$i]));
}
if ($rusers) {
$contact = array_values($rusers)[0];
}
} else if ($sendoption == ENROL_SEND_EMAIL_FROM_KEY_HOLDER) {
// Send as the first user with enrol/self:holdkey capability assigned in the course.
list($sort) = users_order_by_sql('u');
$keyholders = get_users_by_capability($context, 'enrol/self:holdkey', 'u.*', $sort);
if (!empty($keyholders)) {
$contact = array_values($keyholders)[0];
}
}
// If send welcome email option is set to no reply or if none of the previous options have
// returned a contact send welcome message as noreplyuser.
if ($sendoption == ENROL_SEND_EMAIL_FROM_NOREPLY || empty($contact)) {
$contact = core_user::get_noreply_user();
}
return $contact;
}
}
/**
* Get icon mapping for font-awesome.
*/
function enrol_self_get_fontawesome_icon_map() {
return [
'enrol_self:withkey' => 'fa-key',
'enrol_self:withoutkey' => 'fa-sign-in',
];
}