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Developer Documentation
See Release Notes
Long Term Support Release
- Bug fixes for general core bugs in 4.1.x will end 13 November 2023 (12 months).
- Bug fixes for security issues in 4.1.x will end 10 November 2025 (36 months).
- PHP version: minimum PHP 7.4.0 Note: minimum PHP version has increased since Moodle 4.0. PHP 8.0.x is supported too.
/enrol/self/ -> lib.php (source)
Differences Between: [Versions 310 and 401] [Versions 311 and 401] [Versions 39 and 401] [Versions 400 and 401] [Versions 401 and 403]
1 <?php 2 // This file is part of Moodle - http://moodle.org/ 3 // 4 // Moodle is free software: you can redistribute it and/or modify 5 // it under the terms of the GNU General Public License as published by 6 // the Free Software Foundation, either version 3 of the License, or 7 // (at your option) any later version. 8 // 9 // Moodle is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU General Public License for more details. 13 // 14 // You should have received a copy of the GNU General Public License 15 // along with Moodle. If not, see <http://www.gnu.org/licenses/>. 16 17 /** 18 * Self enrolment plugin. 19 * 20 * @package enrol_self 21 * @copyright 2010 Petr Skoda {@link http://skodak.org} 22 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 23 */ 24 25 /** 26 * Self enrolment plugin implementation. 27 * @author Petr Skoda 28 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 29 */ 30 class enrol_self_plugin extends enrol_plugin { 31 32 protected $lasternoller = null; 33 protected $lasternollerinstanceid = 0; 34 35 /** 36 * Returns optional enrolment information icons. 37 * 38 * This is used in course list for quick overview of enrolment options. 39 * 40 * We are not using single instance parameter because sometimes 41 * we might want to prevent icon repetition when multiple instances 42 * of one type exist. One instance may also produce several icons. 43 * 44 * @param array $instances all enrol instances of this type in one course 45 * @return array of pix_icon 46 */ 47 public function get_info_icons(array $instances) { 48 $key = false; 49 $nokey = false; 50 foreach ($instances as $instance) { 51 if ($this->can_self_enrol($instance, false) !== true) { 52 // User can not enrol himself. 53 // Note that we do not check here if user is already enrolled for performance reasons - 54 // such check would execute extra queries for each course in the list of courses and 55 // would hide self-enrolment icons from guests. 56 continue; 57 } 58 if ($instance->password or $instance->customint1) { 59 $key = true; 60 } else { 61 $nokey = true; 62 } 63 } 64 $icons = array(); 65 if ($nokey) { 66 $icons[] = new pix_icon('withoutkey', get_string('pluginname', 'enrol_self'), 'enrol_self'); 67 } 68 if ($key) { 69 $icons[] = new pix_icon('withkey', get_string('pluginname', 'enrol_self'), 'enrol_self'); 70 } 71 return $icons; 72 } 73 74 /** 75 * Returns localised name of enrol instance 76 * 77 * @param stdClass $instance (null is accepted too) 78 * @return string 79 */ 80 public function get_instance_name($instance) { 81 global $DB; 82 83 if (empty($instance->name)) { 84 if (!empty($instance->roleid) and $role = $DB->get_record('role', array('id'=>$instance->roleid))) { 85 $role = ' (' . role_get_name($role, context_course::instance($instance->courseid, IGNORE_MISSING)) . ')'; 86 } else { 87 $role = ''; 88 } 89 $enrol = $this->get_name(); 90 return get_string('pluginname', 'enrol_'.$enrol) . $role; 91 } else { 92 return format_string($instance->name); 93 } 94 } 95 96 public function roles_protected() { 97 // Users may tweak the roles later. 98 return false; 99 } 100 101 public function allow_unenrol(stdClass $instance) { 102 // Users with unenrol cap may unenrol other users manually manually. 103 return true; 104 } 105 106 public function allow_manage(stdClass $instance) { 107 // Users with manage cap may tweak period and status. 108 return true; 109 } 110 111 public function show_enrolme_link(stdClass $instance) { 112 113 if (true !== $this->can_self_enrol($instance, false)) { 114 return false; 115 } 116 117 return true; 118 } 119 120 /** 121 * Return true if we can add a new instance to this course. 122 * 123 * @param int $courseid 124 * @return boolean 125 */ 126 public function can_add_instance($courseid) { 127 $context = context_course::instance($courseid, MUST_EXIST); 128 129 if (!has_capability('moodle/course:enrolconfig', $context) or !has_capability('enrol/self:config', $context)) { 130 return false; 131 } 132 133 return true; 134 } 135 136 /** 137 * Self enrol user to course 138 * 139 * @param stdClass $instance enrolment instance 140 * @param stdClass $data data needed for enrolment. 141 * @return bool|array true if enroled else eddor code and messege 142 */ 143 public function enrol_self(stdClass $instance, $data = null) { 144 global $DB, $USER, $CFG; 145 146 // Don't enrol user if password is not passed when required. 147 if ($instance->password && !isset($data->enrolpassword)) { 148 return; 149 } 150 151 $timestart = time(); 152 if ($instance->enrolperiod) { 153 $timeend = $timestart + $instance->enrolperiod; 154 } else { 155 $timeend = 0; 156 } 157 158 $this->enrol_user($instance, $USER->id, $instance->roleid, $timestart, $timeend); 159 160 \core\notification::success(get_string('youenrolledincourse', 'enrol')); 161 162 // Test whether the password is also used as a group key. 163 if ($instance->password && $instance->customint1) { 164 $groups = $DB->get_records('groups', array('courseid'=>$instance->courseid), 'id', 'id, enrolmentkey'); 165 foreach ($groups as $group) { 166 if (empty($group->enrolmentkey)) { 167 continue; 168 } 169 if ($group->enrolmentkey === $data->enrolpassword) { 170 // Add user to group. 171 require_once($CFG->dirroot.'/group/lib.php'); 172 groups_add_member($group->id, $USER->id); 173 break; 174 } 175 } 176 } 177 // Send welcome message. 178 if ($instance->customint4 != ENROL_DO_NOT_SEND_EMAIL) { 179 $this->email_welcome_message($instance, $USER); 180 } 181 } 182 183 /** 184 * Creates course enrol form, checks if form submitted 185 * and enrols user if necessary. It can also redirect. 186 * 187 * @param stdClass $instance 188 * @return string html text, usually a form in a text box 189 */ 190 public function enrol_page_hook(stdClass $instance) { 191 global $CFG, $OUTPUT, $USER; 192 193 require_once("$CFG->dirroot/enrol/self/locallib.php"); 194 195 $enrolstatus = $this->can_self_enrol($instance); 196 197 if (true === $enrolstatus) { 198 // This user can self enrol using this instance. 199 $form = new enrol_self_enrol_form(null, $instance); 200 $instanceid = optional_param('instance', 0, PARAM_INT); 201 if ($instance->id == $instanceid) { 202 if ($data = $form->get_data()) { 203 $this->enrol_self($instance, $data); 204 } 205 } 206 } else { 207 // This user can not self enrol using this instance. Using an empty form to keep 208 // the UI consistent with other enrolment plugins that returns a form. 209 $data = new stdClass(); 210 $data->header = $this->get_instance_name($instance); 211 $data->info = $enrolstatus; 212 213 // The can_self_enrol call returns a button to the login page if the user is a 214 // guest, setting the login url to the form if that is the case. 215 $url = isguestuser() ? get_login_url() : null; 216 $form = new enrol_self_empty_form($url, $data); 217 } 218 219 ob_start(); 220 $form->display(); 221 $output = ob_get_clean(); 222 return $OUTPUT->box($output); 223 } 224 225 /** 226 * Checks if user can self enrol. 227 * 228 * @param stdClass $instance enrolment instance 229 * @param bool $checkuserenrolment if true will check if user enrolment is inactive. 230 * used by navigation to improve performance. 231 * @return bool|string true if successful, else error message or false. 232 */ 233 public function can_self_enrol(stdClass $instance, $checkuserenrolment = true) { 234 global $DB, $OUTPUT, $USER; 235 236 if ($checkuserenrolment) { 237 if (isguestuser()) { 238 // Can not enrol guest. 239 return get_string('noguestaccess', 'enrol') . $OUTPUT->continue_button(get_login_url()); 240 } 241 // Check if user is already enroled. 242 if ($DB->get_record('user_enrolments', array('userid' => $USER->id, 'enrolid' => $instance->id))) { 243 return get_string('canntenrol', 'enrol_self'); 244 } 245 } 246 247 // Check if self enrolment is available right now for users. 248 $result = $this->is_self_enrol_available($instance); 249 if ($result !== true) { 250 return $result; 251 } 252 253 // Check if user has the capability to enrol in this context. 254 if (!has_capability('enrol/self:enrolself', context_course::instance($instance->courseid))) { 255 return get_string('canntenrol', 'enrol_self'); 256 } 257 258 return true; 259 } 260 261 /** 262 * Does this plugin support some way to self enrol? 263 * This function doesn't check user capabilities. Use can_self_enrol to check capabilities. 264 * 265 * @param stdClass $instance enrolment instance 266 * @return bool - true means "Enrol me in this course" link could be available 267 */ 268 public function is_self_enrol_available(stdClass $instance) { 269 global $CFG, $DB, $USER; 270 271 if ($instance->status != ENROL_INSTANCE_ENABLED) { 272 return get_string('canntenrol', 'enrol_self'); 273 } 274 275 if ($instance->enrolstartdate != 0 and $instance->enrolstartdate > time()) { 276 return get_string('canntenrolearly', 'enrol_self', userdate($instance->enrolstartdate)); 277 } 278 279 if ($instance->enrolenddate != 0 and $instance->enrolenddate < time()) { 280 return get_string('canntenrollate', 'enrol_self', userdate($instance->enrolenddate)); 281 } 282 283 if (!$instance->customint6) { 284 // New enrols not allowed. 285 return get_string('canntenrol', 'enrol_self'); 286 } 287 288 if ($DB->record_exists('user_enrolments', array('userid' => $USER->id, 'enrolid' => $instance->id))) { 289 return get_string('canntenrol', 'enrol_self'); 290 } 291 292 if ($instance->customint3 > 0) { 293 // Max enrol limit specified. 294 $count = $DB->count_records('user_enrolments', array('enrolid' => $instance->id)); 295 if ($count >= $instance->customint3) { 296 // Bad luck, no more self enrolments here. 297 return get_string('maxenrolledreached', 'enrol_self'); 298 } 299 } 300 301 if ($instance->customint5) { 302 require_once("$CFG->dirroot/cohort/lib.php"); 303 if (!cohort_is_member($instance->customint5, $USER->id)) { 304 $cohort = $DB->get_record('cohort', array('id' => $instance->customint5)); 305 if (!$cohort) { 306 return null; 307 } 308 $a = format_string($cohort->name, true, array('context' => context::instance_by_id($cohort->contextid))); 309 return markdown_to_html(get_string('cohortnonmemberinfo', 'enrol_self', $a)); 310 } 311 } 312 313 return true; 314 } 315 316 /** 317 * Return information for enrolment instance containing list of parameters required 318 * for enrolment, name of enrolment plugin etc. 319 * 320 * @param stdClass $instance enrolment instance 321 * @return stdClass instance info. 322 */ 323 public function get_enrol_info(stdClass $instance) { 324 325 $instanceinfo = new stdClass(); 326 $instanceinfo->id = $instance->id; 327 $instanceinfo->courseid = $instance->courseid; 328 $instanceinfo->type = $this->get_name(); 329 $instanceinfo->name = $this->get_instance_name($instance); 330 $instanceinfo->status = $this->can_self_enrol($instance); 331 332 if ($instance->password) { 333 $instanceinfo->requiredparam = new stdClass(); 334 $instanceinfo->requiredparam->enrolpassword = get_string('password', 'enrol_self'); 335 } 336 337 // If enrolment is possible and password is required then return ws function name to get more information. 338 if ((true === $instanceinfo->status) && $instance->password) { 339 $instanceinfo->wsfunction = 'enrol_self_get_instance_info'; 340 } 341 return $instanceinfo; 342 } 343 344 /** 345 * Add new instance of enrol plugin with default settings. 346 * @param stdClass $course 347 * @return int id of new instance 348 */ 349 public function add_default_instance($course) { 350 $fields = $this->get_instance_defaults(); 351 352 if ($this->get_config('requirepassword')) { 353 $fields['password'] = generate_password(20); 354 } 355 356 return $this->add_instance($course, $fields); 357 } 358 359 /** 360 * Returns defaults for new instances. 361 * @return array 362 */ 363 public function get_instance_defaults() { 364 $expirynotify = $this->get_config('expirynotify'); 365 if ($expirynotify == 2) { 366 $expirynotify = 1; 367 $notifyall = 1; 368 } else { 369 $notifyall = 0; 370 } 371 372 $fields = array(); 373 $fields['status'] = $this->get_config('status'); 374 $fields['roleid'] = $this->get_config('roleid'); 375 $fields['enrolperiod'] = $this->get_config('enrolperiod'); 376 $fields['expirynotify'] = $expirynotify; 377 $fields['notifyall'] = $notifyall; 378 $fields['expirythreshold'] = $this->get_config('expirythreshold'); 379 $fields['customint1'] = $this->get_config('groupkey'); 380 $fields['customint2'] = $this->get_config('longtimenosee'); 381 $fields['customint3'] = $this->get_config('maxenrolled'); 382 $fields['customint4'] = $this->get_config('sendcoursewelcomemessage'); 383 $fields['customint5'] = 0; 384 $fields['customint6'] = $this->get_config('newenrols'); 385 386 return $fields; 387 } 388 389 /** 390 * Send welcome email to specified user. 391 * 392 * @param stdClass $instance 393 * @param stdClass $user user record 394 * @return void 395 */ 396 protected function email_welcome_message($instance, $user) { 397 global $CFG, $DB; 398 399 $course = $DB->get_record('course', array('id'=>$instance->courseid), '*', MUST_EXIST); 400 $context = context_course::instance($course->id); 401 402 $a = new stdClass(); 403 $a->coursename = format_string($course->fullname, true, array('context'=>$context)); 404 $a->profileurl = "$CFG->wwwroot/user/view.php?id=$user->id&course=$course->id"; 405 406 if (!is_null($instance->customtext1) && trim($instance->customtext1) !== '') { 407 $message = $instance->customtext1; 408 $key = array('{$a->coursename}', '{$a->profileurl}', '{$a->fullname}', '{$a->email}'); 409 $value = array($a->coursename, $a->profileurl, fullname($user), $user->email); 410 $message = str_replace($key, $value, $message); 411 if (strpos($message, '<') === false) { 412 // Plain text only. 413 $messagetext = $message; 414 $messagehtml = text_to_html($messagetext, null, false, true); 415 } else { 416 // This is most probably the tag/newline soup known as FORMAT_MOODLE. 417 $messagehtml = format_text($message, FORMAT_MOODLE, array('context'=>$context, 'para'=>false, 'newlines'=>true, 'filter'=>true)); 418 $messagetext = html_to_text($messagehtml); 419 } 420 } else { 421 $messagetext = get_string('welcometocoursetext', 'enrol_self', $a); 422 $messagehtml = text_to_html($messagetext, null, false, true); 423 } 424 425 $subject = get_string('welcometocourse', 'enrol_self', format_string($course->fullname, true, array('context'=>$context))); 426 427 $sendoption = $instance->customint4; 428 $contact = $this->get_welcome_email_contact($sendoption, $context); 429 430 // Directly emailing welcome message rather than using messaging. 431 email_to_user($user, $contact, $subject, $messagetext, $messagehtml); 432 } 433 434 /** 435 * Sync all meta course links. 436 * 437 * @param progress_trace $trace 438 * @param int $courseid one course, empty mean all 439 * @return int 0 means ok, 1 means error, 2 means plugin disabled 440 */ 441 public function sync(progress_trace $trace, $courseid = null) { 442 global $DB; 443 444 if (!enrol_is_enabled('self')) { 445 $trace->finished(); 446 return 2; 447 } 448 449 // Unfortunately this may take a long time, execution can be interrupted safely here. 450 core_php_time_limit::raise(); 451 raise_memory_limit(MEMORY_HUGE); 452 453 $trace->output('Verifying self-enrolments...'); 454 455 $params = array('now'=>time(), 'useractive'=>ENROL_USER_ACTIVE, 'courselevel'=>CONTEXT_COURSE); 456 $coursesql = ""; 457 if ($courseid) { 458 $coursesql = "AND e.courseid = :courseid"; 459 $params['courseid'] = $courseid; 460 } 461 462 // Note: the logic of self enrolment guarantees that user logged in at least once (=== u.lastaccess set) 463 // and that user accessed course at least once too (=== user_lastaccess record exists). 464 465 // First deal with users that did not log in for a really long time - they do not have user_lastaccess records. 466 $sql = "SELECT e.*, ue.userid 467 FROM {user_enrolments} ue 468 JOIN {enrol} e ON (e.id = ue.enrolid AND e.enrol = 'self' AND e.customint2 > 0) 469 JOIN {user} u ON u.id = ue.userid 470 WHERE :now - u.lastaccess > e.customint2 471 $coursesql"; 472 $rs = $DB->get_recordset_sql($sql, $params); 473 foreach ($rs as $instance) { 474 $userid = $instance->userid; 475 unset($instance->userid); 476 $this->unenrol_user($instance, $userid); 477 $days = $instance->customint2 / DAYSECS; 478 $trace->output("unenrolling user $userid from course $instance->courseid " . 479 "as they did not log in for at least $days days", 1); 480 } 481 $rs->close(); 482 483 // Now unenrol from course user did not visit for a long time. 484 $sql = "SELECT e.*, ue.userid 485 FROM {user_enrolments} ue 486 JOIN {enrol} e ON (e.id = ue.enrolid AND e.enrol = 'self' AND e.customint2 > 0) 487 JOIN {user_lastaccess} ul ON (ul.userid = ue.userid AND ul.courseid = e.courseid) 488 WHERE :now - ul.timeaccess > e.customint2 489 $coursesql"; 490 $rs = $DB->get_recordset_sql($sql, $params); 491 foreach ($rs as $instance) { 492 $userid = $instance->userid; 493 unset($instance->userid); 494 $this->unenrol_user($instance, $userid); 495 $days = $instance->customint2 / DAYSECS; 496 $trace->output("unenrolling user $userid from course $instance->courseid " . 497 "as they did not access the course for at least $days days", 1); 498 } 499 $rs->close(); 500 501 $trace->output('...user self-enrolment updates finished.'); 502 $trace->finished(); 503 504 $this->process_expirations($trace, $courseid); 505 506 return 0; 507 } 508 509 /** 510 * Returns the user who is responsible for self enrolments in given instance. 511 * 512 * Usually it is the first editing teacher - the person with "highest authority" 513 * as defined by sort_by_roleassignment_authority() having 'enrol/self:manage' 514 * capability. 515 * 516 * @param int $instanceid enrolment instance id 517 * @return stdClass user record 518 */ 519 protected function get_enroller($instanceid) { 520 global $DB; 521 522 if ($this->lasternollerinstanceid == $instanceid and $this->lasternoller) { 523 return $this->lasternoller; 524 } 525 526 $instance = $DB->get_record('enrol', array('id'=>$instanceid, 'enrol'=>$this->get_name()), '*', MUST_EXIST); 527 $context = context_course::instance($instance->courseid); 528 529 if ($users = get_enrolled_users($context, 'enrol/self:manage')) { 530 $users = sort_by_roleassignment_authority($users, $context); 531 $this->lasternoller = reset($users); 532 unset($users); 533 } else { 534 $this->lasternoller = parent::get_enroller($instanceid); 535 } 536 537 $this->lasternollerinstanceid = $instanceid; 538 539 return $this->lasternoller; 540 } 541 542 /** 543 * Restore instance and map settings. 544 * 545 * @param restore_enrolments_structure_step $step 546 * @param stdClass $data 547 * @param stdClass $course 548 * @param int $oldid 549 */ 550 public function restore_instance(restore_enrolments_structure_step $step, stdClass $data, $course, $oldid) { 551 global $DB; 552 if ($step->get_task()->get_target() == backup::TARGET_NEW_COURSE) { 553 $merge = false; 554 } else { 555 $merge = array( 556 'courseid' => $data->courseid, 557 'enrol' => $this->get_name(), 558 'status' => $data->status, 559 'roleid' => $data->roleid, 560 ); 561 } 562 if ($merge and $instances = $DB->get_records('enrol', $merge, 'id')) { 563 $instance = reset($instances); 564 $instanceid = $instance->id; 565 } else { 566 if (!empty($data->customint5)) { 567 if ($step->get_task()->is_samesite()) { 568 // Keep cohort restriction unchanged - we are on the same site. 569 } else { 570 // Use some id that can not exist in order to prevent self enrolment, 571 // because we do not know what cohort it is in this site. 572 $data->customint5 = -1; 573 } 574 } 575 $instanceid = $this->add_instance($course, (array)$data); 576 } 577 $step->set_mapping('enrol', $oldid, $instanceid); 578 } 579 580 /** 581 * Restore user enrolment. 582 * 583 * @param restore_enrolments_structure_step $step 584 * @param stdClass $data 585 * @param stdClass $instance 586 * @param int $oldinstancestatus 587 * @param int $userid 588 */ 589 public function restore_user_enrolment(restore_enrolments_structure_step $step, $data, $instance, $userid, $oldinstancestatus) { 590 $this->enrol_user($instance, $userid, null, $data->timestart, $data->timeend, $data->status); 591 } 592 593 /** 594 * Restore role assignment. 595 * 596 * @param stdClass $instance 597 * @param int $roleid 598 * @param int $userid 599 * @param int $contextid 600 */ 601 public function restore_role_assignment($instance, $roleid, $userid, $contextid) { 602 // This is necessary only because we may migrate other types to this instance, 603 // we do not use component in manual or self enrol. 604 role_assign($roleid, $userid, $contextid, '', 0); 605 } 606 607 /** 608 * Is it possible to delete enrol instance via standard UI? 609 * 610 * @param stdClass $instance 611 * @return bool 612 */ 613 public function can_delete_instance($instance) { 614 $context = context_course::instance($instance->courseid); 615 return has_capability('enrol/self:config', $context); 616 } 617 618 /** 619 * Is it possible to hide/show enrol instance via standard UI? 620 * 621 * @param stdClass $instance 622 * @return bool 623 */ 624 public function can_hide_show_instance($instance) { 625 $context = context_course::instance($instance->courseid); 626 627 if (!has_capability('enrol/self:config', $context)) { 628 return false; 629 } 630 631 // If the instance is currently disabled, before it can be enabled, 632 // we must check whether the password meets the password policies. 633 if ($instance->status == ENROL_INSTANCE_DISABLED) { 634 if ($this->get_config('requirepassword')) { 635 if (empty($instance->password)) { 636 return false; 637 } 638 } 639 // Only check the password if it is set. 640 if (!empty($instance->password) && $this->get_config('usepasswordpolicy')) { 641 if (!check_password_policy($instance->password, $errmsg)) { 642 return false; 643 } 644 } 645 } 646 647 return true; 648 } 649 650 /** 651 * Return an array of valid options for the status. 652 * 653 * @return array 654 */ 655 protected function get_status_options() { 656 $options = array(ENROL_INSTANCE_ENABLED => get_string('yes'), 657 ENROL_INSTANCE_DISABLED => get_string('no')); 658 return $options; 659 } 660 661 /** 662 * Return an array of valid options for the newenrols property. 663 * 664 * @return array 665 */ 666 protected function get_newenrols_options() { 667 $options = array(1 => get_string('yes'), 0 => get_string('no')); 668 return $options; 669 } 670 671 /** 672 * Return an array of valid options for the groupkey property. 673 * 674 * @return array 675 */ 676 protected function get_groupkey_options() { 677 $options = array(1 => get_string('yes'), 0 => get_string('no')); 678 return $options; 679 } 680 681 /** 682 * Return an array of valid options for the expirynotify property. 683 * 684 * @return array 685 */ 686 protected function get_expirynotify_options() { 687 $options = array(0 => get_string('no'), 688 1 => get_string('expirynotifyenroller', 'enrol_self'), 689 2 => get_string('expirynotifyall', 'enrol_self')); 690 return $options; 691 } 692 693 /** 694 * Return an array of valid options for the longtimenosee property. 695 * 696 * @return array 697 */ 698 protected function get_longtimenosee_options() { 699 $options = array(0 => get_string('never'), 700 1800 * 3600 * 24 => get_string('numdays', '', 1800), 701 1000 * 3600 * 24 => get_string('numdays', '', 1000), 702 365 * 3600 * 24 => get_string('numdays', '', 365), 703 180 * 3600 * 24 => get_string('numdays', '', 180), 704 150 * 3600 * 24 => get_string('numdays', '', 150), 705 120 * 3600 * 24 => get_string('numdays', '', 120), 706 90 * 3600 * 24 => get_string('numdays', '', 90), 707 60 * 3600 * 24 => get_string('numdays', '', 60), 708 30 * 3600 * 24 => get_string('numdays', '', 30), 709 21 * 3600 * 24 => get_string('numdays', '', 21), 710 14 * 3600 * 24 => get_string('numdays', '', 14), 711 7 * 3600 * 24 => get_string('numdays', '', 7)); 712 return $options; 713 } 714 715 /** 716 * The self enrollment plugin has several bulk operations that can be performed. 717 * @param course_enrolment_manager $manager 718 * @return array 719 */ 720 public function get_bulk_operations(course_enrolment_manager $manager) { 721 global $CFG; 722 require_once($CFG->dirroot.'/enrol/self/locallib.php'); 723 $context = $manager->get_context(); 724 $bulkoperations = array(); 725 if (has_capability("enrol/self:manage", $context)) { 726 $bulkoperations['editselectedusers'] = new enrol_self_editselectedusers_operation($manager, $this); 727 } 728 if (has_capability("enrol/self:unenrol", $context)) { 729 $bulkoperations['deleteselectedusers'] = new enrol_self_deleteselectedusers_operation($manager, $this); 730 } 731 return $bulkoperations; 732 } 733 734 /** 735 * Add elements to the edit instance form. 736 * 737 * @param stdClass $instance 738 * @param MoodleQuickForm $mform 739 * @param context $context 740 * @return bool 741 */ 742 public function edit_instance_form($instance, MoodleQuickForm $mform, $context) { 743 global $CFG, $DB; 744 745 // Merge these two settings to one value for the single selection element. 746 if ($instance->notifyall and $instance->expirynotify) { 747 $instance->expirynotify = 2; 748 } 749 unset($instance->notifyall); 750 751 $nameattribs = array('size' => '20', 'maxlength' => '255'); 752 $mform->addElement('text', 'name', get_string('custominstancename', 'enrol'), $nameattribs); 753 $mform->setType('name', PARAM_TEXT); 754 $mform->addRule('name', get_string('maximumchars', '', 255), 'maxlength', 255, 'server'); 755 756 $options = $this->get_status_options(); 757 $mform->addElement('select', 'status', get_string('status', 'enrol_self'), $options); 758 $mform->addHelpButton('status', 'status', 'enrol_self'); 759 760 $options = $this->get_newenrols_options(); 761 $mform->addElement('select', 'customint6', get_string('newenrols', 'enrol_self'), $options); 762 $mform->addHelpButton('customint6', 'newenrols', 'enrol_self'); 763 $mform->disabledIf('customint6', 'status', 'eq', ENROL_INSTANCE_DISABLED); 764 765 $passattribs = array('size' => '20', 'maxlength' => '50'); 766 $mform->addElement('passwordunmask', 'password', get_string('password', 'enrol_self'), $passattribs); 767 $mform->addHelpButton('password', 'password', 'enrol_self'); 768 if (empty($instance->id) and $this->get_config('requirepassword')) { 769 $mform->addRule('password', get_string('required'), 'required', null, 'client'); 770 } 771 $mform->addRule('password', get_string('maximumchars', '', 50), 'maxlength', 50, 'server'); 772 773 $options = $this->get_groupkey_options(); 774 $mform->addElement('select', 'customint1', get_string('groupkey', 'enrol_self'), $options); 775 $mform->addHelpButton('customint1', 'groupkey', 'enrol_self'); 776 777 $roles = $this->extend_assignable_roles($context, $instance->roleid); 778 $mform->addElement('select', 'roleid', get_string('role', 'enrol_self'), $roles); 779 780 $options = array('optional' => true, 'defaultunit' => 86400); 781 $mform->addElement('duration', 'enrolperiod', get_string('enrolperiod', 'enrol_self'), $options); 782 $mform->addHelpButton('enrolperiod', 'enrolperiod', 'enrol_self'); 783 784 $options = $this->get_expirynotify_options(); 785 $mform->addElement('select', 'expirynotify', get_string('expirynotify', 'core_enrol'), $options); 786 $mform->addHelpButton('expirynotify', 'expirynotify', 'core_enrol'); 787 788 $options = array('optional' => false, 'defaultunit' => 86400); 789 $mform->addElement('duration', 'expirythreshold', get_string('expirythreshold', 'core_enrol'), $options); 790 $mform->addHelpButton('expirythreshold', 'expirythreshold', 'core_enrol'); 791 $mform->disabledIf('expirythreshold', 'expirynotify', 'eq', 0); 792 793 $options = array('optional' => true); 794 $mform->addElement('date_time_selector', 'enrolstartdate', get_string('enrolstartdate', 'enrol_self'), $options); 795 $mform->setDefault('enrolstartdate', 0); 796 $mform->addHelpButton('enrolstartdate', 'enrolstartdate', 'enrol_self'); 797 798 $options = array('optional' => true); 799 $mform->addElement('date_time_selector', 'enrolenddate', get_string('enrolenddate', 'enrol_self'), $options); 800 $mform->setDefault('enrolenddate', 0); 801 $mform->addHelpButton('enrolenddate', 'enrolenddate', 'enrol_self'); 802 803 $options = $this->get_longtimenosee_options(); 804 $mform->addElement('select', 'customint2', get_string('longtimenosee', 'enrol_self'), $options); 805 $mform->addHelpButton('customint2', 'longtimenosee', 'enrol_self'); 806 807 $mform->addElement('text', 'customint3', get_string('maxenrolled', 'enrol_self')); 808 $mform->addHelpButton('customint3', 'maxenrolled', 'enrol_self'); 809 $mform->setType('customint3', PARAM_INT); 810 811 require_once($CFG->dirroot.'/cohort/lib.php'); 812 813 $cohorts = array(0 => get_string('no')); 814 $allcohorts = cohort_get_available_cohorts($context, 0, 0, 0); 815 if ($instance->customint5 && !isset($allcohorts[$instance->customint5])) { 816 $c = $DB->get_record('cohort', 817 array('id' => $instance->customint5), 818 'id, name, idnumber, contextid, visible', 819 IGNORE_MISSING); 820 if ($c) { 821 // Current cohort was not found because current user can not see it. Still keep it. 822 $allcohorts[$instance->customint5] = $c; 823 } 824 } 825 foreach ($allcohorts as $c) { 826 $cohorts[$c->id] = format_string($c->name, true, array('context' => context::instance_by_id($c->contextid))); 827 if ($c->idnumber) { 828 $cohorts[$c->id] .= ' ['.s($c->idnumber).']'; 829 } 830 } 831 if ($instance->customint5 && !isset($allcohorts[$instance->customint5])) { 832 // Somebody deleted a cohort, better keep the wrong value so that random ppl can not enrol. 833 $cohorts[$instance->customint5] = get_string('unknowncohort', 'cohort', $instance->customint5); 834 } 835 if (count($cohorts) > 1) { 836 $mform->addElement('select', 'customint5', get_string('cohortonly', 'enrol_self'), $cohorts); 837 $mform->addHelpButton('customint5', 'cohortonly', 'enrol_self'); 838 } else { 839 $mform->addElement('hidden', 'customint5'); 840 $mform->setType('customint5', PARAM_INT); 841 $mform->setConstant('customint5', 0); 842 } 843 844 $mform->addElement('select', 'customint4', get_string('sendcoursewelcomemessage', 'enrol_self'), 845 enrol_send_welcome_email_options()); 846 $mform->addHelpButton('customint4', 'sendcoursewelcomemessage', 'enrol_self'); 847 848 $options = array('cols' => '60', 'rows' => '8'); 849 $mform->addElement('textarea', 'customtext1', get_string('customwelcomemessage', 'enrol_self'), $options); 850 $mform->addHelpButton('customtext1', 'customwelcomemessage', 'enrol_self'); 851 852 if (enrol_accessing_via_instance($instance)) { 853 $warntext = get_string('instanceeditselfwarningtext', 'core_enrol'); 854 $mform->addElement('static', 'selfwarn', get_string('instanceeditselfwarning', 'core_enrol'), $warntext); 855 } 856 } 857 858 /** 859 * We are a good plugin and don't invent our own UI/validation code path. 860 * 861 * @return boolean 862 */ 863 public function use_standard_editing_ui() { 864 return true; 865 } 866 867 /** 868 * Perform custom validation of the data used to edit the instance. 869 * 870 * @param array $data array of ("fieldname"=>value) of submitted data 871 * @param array $files array of uploaded files "element_name"=>tmp_file_path 872 * @param object $instance The instance loaded from the DB 873 * @param context $context The context of the instance we are editing 874 * @return array of "element_name"=>"error_description" if there are errors, 875 * or an empty array if everything is OK. 876 * @return void 877 */ 878 public function edit_instance_validation($data, $files, $instance, $context) { 879 global $CFG; 880 require_once("{$CFG->dirroot}/enrol/self/locallib.php"); 881 882 $errors = array(); 883 884 $checkpassword = false; 885 886 if ($instance->id) { 887 // Check the password if we are enabling the plugin again. 888 if (($instance->status == ENROL_INSTANCE_DISABLED) && ($data['status'] == ENROL_INSTANCE_ENABLED)) { 889 $checkpassword = true; 890 } 891 892 // Check the password if the instance is enabled and the password has changed. 893 if (($data['status'] == ENROL_INSTANCE_ENABLED) && ($instance->password !== $data['password'])) { 894 $checkpassword = true; 895 } 896 897 // Check the password if we are enabling group enrolment keys. 898 if (!$instance->customint1 && $data['customint1']) { 899 $checkpassword = true; 900 } 901 } else { 902 $checkpassword = true; 903 } 904 905 if ($checkpassword) { 906 $require = $this->get_config('requirepassword'); 907 $policy = $this->get_config('usepasswordpolicy'); 908 if ($require and trim($data['password']) === '') { 909 $errors['password'] = get_string('required'); 910 } else if (!empty($data['password']) && $policy) { 911 $errmsg = ''; 912 if (!check_password_policy($data['password'], $errmsg)) { 913 $errors['password'] = $errmsg; 914 } 915 } else if (!empty($data['password']) && $data['customint1'] && 916 enrol_self_check_group_enrolment_key($data['courseid'], $data['password'])) { 917 918 $errors['password'] = get_string('passwordmatchesgroupkey', 'enrol_self'); 919 } 920 } 921 922 if ($data['status'] == ENROL_INSTANCE_ENABLED) { 923 if (!empty($data['enrolenddate']) and $data['enrolenddate'] < $data['enrolstartdate']) { 924 $errors['enrolenddate'] = get_string('enrolenddaterror', 'enrol_self'); 925 } 926 } 927 928 if ($data['expirynotify'] > 0 and $data['expirythreshold'] < 86400) { 929 $errors['expirythreshold'] = get_string('errorthresholdlow', 'core_enrol'); 930 } 931 932 // Now these ones are checked by quickforms, but we may be called by the upload enrolments tool, or a webservive. 933 if (core_text::strlen($data['name']) > 255) { 934 $errors['name'] = get_string('err_maxlength', 'form', 255); 935 } 936 $validstatus = array_keys($this->get_status_options()); 937 $validnewenrols = array_keys($this->get_newenrols_options()); 938 if (core_text::strlen($data['password']) > 50) { 939 $errors['name'] = get_string('err_maxlength', 'form', 50); 940 } 941 $validgroupkey = array_keys($this->get_groupkey_options()); 942 $context = context_course::instance($instance->courseid); 943 $validroles = array_keys($this->extend_assignable_roles($context, $instance->roleid)); 944 $validexpirynotify = array_keys($this->get_expirynotify_options()); 945 $validlongtimenosee = array_keys($this->get_longtimenosee_options()); 946 $tovalidate = array( 947 'enrolstartdate' => PARAM_INT, 948 'enrolenddate' => PARAM_INT, 949 'name' => PARAM_TEXT, 950 'customint1' => $validgroupkey, 951 'customint2' => $validlongtimenosee, 952 'customint3' => PARAM_INT, 953 'customint4' => PARAM_INT, 954 'customint5' => PARAM_INT, 955 'customint6' => $validnewenrols, 956 'status' => $validstatus, 957 'enrolperiod' => PARAM_INT, 958 'expirynotify' => $validexpirynotify, 959 'roleid' => $validroles 960 ); 961 if ($data['expirynotify'] != 0) { 962 $tovalidate['expirythreshold'] = PARAM_INT; 963 } 964 $typeerrors = $this->validate_param_types($data, $tovalidate); 965 $errors = array_merge($errors, $typeerrors); 966 967 return $errors; 968 } 969 970 /** 971 * Add new instance of enrol plugin. 972 * @param object $course 973 * @param array $fields instance fields 974 * @return int id of new instance, null if can not be created 975 */ 976 public function add_instance($course, array $fields = null) { 977 // In the form we are representing 2 db columns with one field. 978 if (!empty($fields) && !empty($fields['expirynotify'])) { 979 if ($fields['expirynotify'] == 2) { 980 $fields['expirynotify'] = 1; 981 $fields['notifyall'] = 1; 982 } else { 983 $fields['notifyall'] = 0; 984 } 985 } 986 987 return parent::add_instance($course, $fields); 988 } 989 990 /** 991 * Update instance of enrol plugin. 992 * @param stdClass $instance 993 * @param stdClass $data modified instance fields 994 * @return boolean 995 */ 996 public function update_instance($instance, $data) { 997 // In the form we are representing 2 db columns with one field. 998 if ($data->expirynotify == 2) { 999 $data->expirynotify = 1; 1000 $data->notifyall = 1; 1001 } else { 1002 $data->notifyall = 0; 1003 } 1004 // Keep previous/default value of disabled expirythreshold option. 1005 if (!$data->expirynotify) { 1006 $data->expirythreshold = $instance->expirythreshold; 1007 } 1008 // Add previous value of newenrols if disabled. 1009 if (!isset($data->customint6)) { 1010 $data->customint6 = $instance->customint6; 1011 } 1012 1013 return parent::update_instance($instance, $data); 1014 } 1015 1016 /** 1017 * Gets a list of roles that this user can assign for the course as the default for self-enrolment. 1018 * 1019 * @param context $context the context. 1020 * @param integer $defaultrole the id of the role that is set as the default for self-enrolment 1021 * @return array index is the role id, value is the role name 1022 */ 1023 public function extend_assignable_roles($context, $defaultrole) { 1024 global $DB; 1025 1026 $roles = get_assignable_roles($context, ROLENAME_BOTH); 1027 if (!isset($roles[$defaultrole])) { 1028 if ($role = $DB->get_record('role', array('id' => $defaultrole))) { 1029 $roles[$defaultrole] = role_get_name($role, $context, ROLENAME_BOTH); 1030 } 1031 } 1032 return $roles; 1033 } 1034 1035 /** 1036 * Get the "from" contact which the email will be sent from. 1037 * 1038 * @param int $sendoption send email from constant ENROL_SEND_EMAIL_FROM_* 1039 * @param $context context where the user will be fetched 1040 * @return mixed|stdClass the contact user object. 1041 */ 1042 public function get_welcome_email_contact($sendoption, $context) { 1043 global $CFG; 1044 1045 $contact = null; 1046 // Send as the first user assigned as the course contact. 1047 if ($sendoption == ENROL_SEND_EMAIL_FROM_COURSE_CONTACT) { 1048 $rusers = array(); 1049 if (!empty($CFG->coursecontact)) { 1050 $croles = explode(',', $CFG->coursecontact); 1051 list($sort, $sortparams) = users_order_by_sql('u'); 1052 // We only use the first user. 1053 $i = 0; 1054 do { 1055 $userfieldsapi = \core_user\fields::for_name(); 1056 $allnames = $userfieldsapi->get_sql('u', false, '', '', false)->selects; 1057 $rusers = get_role_users($croles[$i], $context, true, 'u.id, u.confirmed, u.username, '. $allnames . ', 1058 u.email, r.sortorder, ra.id', 'r.sortorder, ra.id ASC, ' . $sort, null, '', '', '', '', $sortparams); 1059 $i++; 1060 } while (empty($rusers) && !empty($croles[$i])); 1061 } 1062 if ($rusers) { 1063 $contact = array_values($rusers)[0]; 1064 } 1065 } else if ($sendoption == ENROL_SEND_EMAIL_FROM_KEY_HOLDER) { 1066 // Send as the first user with enrol/self:holdkey capability assigned in the course. 1067 list($sort) = users_order_by_sql('u'); 1068 $keyholders = get_users_by_capability($context, 'enrol/self:holdkey', 'u.*', $sort); 1069 if (!empty($keyholders)) { 1070 $contact = array_values($keyholders)[0]; 1071 } 1072 } 1073 1074 // If send welcome email option is set to no reply or if none of the previous options have 1075 // returned a contact send welcome message as noreplyuser. 1076 if ($sendoption == ENROL_SEND_EMAIL_FROM_NOREPLY || empty($contact)) { 1077 $contact = core_user::get_noreply_user(); 1078 } 1079 1080 return $contact; 1081 } 1082 } 1083 1084 /** 1085 * Get icon mapping for font-awesome. 1086 */ 1087 function enrol_self_get_fontawesome_icon_map() { 1088 return [ 1089 'enrol_self:withkey' => 'fa-key', 1090 'enrol_self:withoutkey' => 'fa-sign-in', 1091 ]; 1092 }
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