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Differences Between: [Versions 310 and 311] [Versions 39 and 311]

   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  namespace auth_db;
  18  
  19  /**
  20   * External database auth sync tests, this also tests adodb drivers
  21   * that are matching our four supported Moodle database drivers.
  22   *
  23   * @package    auth_db
  24   * @category   phpunit
  25   * @copyright  2012 Petr Skoda {@link http://skodak.org}
  26   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  27   */
  28  class db_test extends \advanced_testcase {
  29      /** @var string Original error log */
  30      protected $oldlog;
  31  
  32      /** @var int The amount of users to create for the large user set deletion test  */
  33      protected $largedeletionsetsize = 128;
  34  
  35      public static function tearDownAfterClass(): void {
  36          global $DB;
  37          // Apply sqlsrv native driver error and logging default
  38          // settings while finishing the AdoDB tests.
  39          if ($DB->get_dbfamily() === 'mssql') {
  40              sqlsrv_configure("WarningsReturnAsErrors", false);
  41              sqlsrv_configure("LogSubsystems", SQLSRV_LOG_SYSTEM_OFF);
  42              sqlsrv_configure("LogSeverity", SQLSRV_LOG_SEVERITY_ERROR);
  43          }
  44      }
  45  
  46      protected function init_auth_database() {
  47          global $DB, $CFG;
  48          require_once("$CFG->dirroot/auth/db/auth.php");
  49  
  50          // Discard error logs from AdoDB.
  51          $this->oldlog = ini_get('error_log');
  52          ini_set('error_log', "$CFG->dataroot/testlog.log");
  53  
  54          $dbman = $DB->get_manager();
  55  
  56          set_config('extencoding', 'utf-8', 'auth_db');
  57  
  58          set_config('host', $CFG->dbhost, 'auth_db');
  59          set_config('user', $CFG->dbuser, 'auth_db');
  60          set_config('pass', $CFG->dbpass, 'auth_db');
  61          set_config('name', $CFG->dbname, 'auth_db');
  62  
  63          if (!empty($CFG->dboptions['dbport'])) {
  64              set_config('host', $CFG->dbhost.':'.$CFG->dboptions['dbport'], 'auth_db');
  65          }
  66  
  67          switch ($DB->get_dbfamily()) {
  68  
  69              case 'mysql':
  70                  set_config('type', 'mysqli', 'auth_db');
  71                  set_config('setupsql', "SET NAMES 'UTF-8'", 'auth_db');
  72                  set_config('sybasequoting', '0', 'auth_db');
  73                  if (!empty($CFG->dboptions['dbsocket'])) {
  74                      $dbsocket = $CFG->dboptions['dbsocket'];
  75                      if ((strpos($dbsocket, '/') === false and strpos($dbsocket, '\\') === false)) {
  76                          $dbsocket = ini_get('mysqli.default_socket');
  77                      }
  78                      set_config('type', 'mysqli://'.rawurlencode($CFG->dbuser).':'.rawurlencode($CFG->dbpass).'@'.rawurlencode($CFG->dbhost).'/'.rawurlencode($CFG->dbname).'?socket='.rawurlencode($dbsocket), 'auth_db');
  79                  }
  80                  break;
  81  
  82              case 'oracle':
  83                  set_config('type', 'oci8po', 'auth_db');
  84                  set_config('sybasequoting', '1', 'auth_db');
  85                  break;
  86  
  87              case 'postgres':
  88                  set_config('type', 'postgres7', 'auth_db');
  89                  $setupsql = "SET NAMES 'UTF-8'";
  90                  if (!empty($CFG->dboptions['dbschema'])) {
  91                      $setupsql .= "; SET search_path = '".$CFG->dboptions['dbschema']."'";
  92                  }
  93                  set_config('setupsql', $setupsql, 'auth_db');
  94                  set_config('sybasequoting', '0', 'auth_db');
  95                  if (!empty($CFG->dboptions['dbsocket']) and ($CFG->dbhost === 'localhost' or $CFG->dbhost === '127.0.0.1')) {
  96                      if (strpos($CFG->dboptions['dbsocket'], '/') !== false) {
  97                          $socket = $CFG->dboptions['dbsocket'];
  98                          if (!empty($CFG->dboptions['dbport'])) {
  99                              $socket .= ':' . $CFG->dboptions['dbport'];
 100                          }
 101                          set_config('host', $socket, 'auth_db');
 102                      } else {
 103                          set_config('host', '', 'auth_db');
 104                      }
 105                  }
 106                  break;
 107  
 108              case 'mssql':
 109                  set_config('type', 'mssqlnative', 'auth_db');
 110                  set_config('sybasequoting', '1', 'auth_db');
 111  
 112                  // The native sqlsrv driver uses a comma as separator between host and port.
 113                  $dbhost = $CFG->dbhost;
 114                  if (!empty($dboptions['dbport'])) {
 115                      $dbhost .= ',' . $dboptions['dbport'];
 116                  }
 117                  set_config('host', $dbhost, 'auth_db');
 118                  break;
 119  
 120              default:
 121                  throw new exception('Unknown database family ' . $DB->get_dbfamily());
 122          }
 123  
 124          $table = new \xmldb_table('auth_db_users');
 125          $table->add_field('id', XMLDB_TYPE_INTEGER, '10', null, XMLDB_NOTNULL, XMLDB_SEQUENCE, null);
 126          $table->add_field('name', XMLDB_TYPE_CHAR, '255', null, null, null);
 127          $table->add_field('pass', XMLDB_TYPE_CHAR, '255', null, null, null);
 128          $table->add_field('email', XMLDB_TYPE_CHAR, '255', null, null, null);
 129          $table->add_field('firstname', XMLDB_TYPE_CHAR, '255', null, null, null);
 130          $table->add_field('lastname', XMLDB_TYPE_CHAR, '255', null, null, null);
 131          $table->add_field('animal', XMLDB_TYPE_CHAR, '255', null, null, null);
 132          $table->add_key('primary', XMLDB_KEY_PRIMARY, array('id'));
 133          if ($dbman->table_exists($table)) {
 134              $dbman->drop_table($table);
 135          }
 136          $dbman->create_table($table);
 137          set_config('table', $CFG->prefix.'auth_db_users', 'auth_db');
 138          set_config('fielduser', 'name', 'auth_db');
 139          set_config('fieldpass', 'pass', 'auth_db');
 140          set_config('field_map_lastname', 'lastname', 'auth_db');
 141          set_config('field_updatelocal_lastname', 'oncreate', 'auth_db');
 142          set_config('field_lock_lastname', 'unlocked', 'auth_db');
 143          // Setu up field mappings.
 144  
 145          set_config('field_map_email', 'email', 'auth_db');
 146          set_config('field_updatelocal_email', 'oncreate', 'auth_db');
 147          set_config('field_updateremote_email', '0', 'auth_db');
 148          set_config('field_lock_email', 'unlocked', 'auth_db');
 149  
 150          // Create a user profile field and add mapping to it.
 151          $this->getDataGenerator()->create_custom_profile_field(['shortname' => 'pet', 'name' => 'Pet', 'datatype' => 'text']);
 152  
 153          set_config('field_map_profile_field_pet', 'animal', 'auth_db');
 154          set_config('field_updatelocal_profile_field_pet', 'oncreate', 'auth_db');
 155          set_config('field_updateremote_profile_field_pet', '0', 'auth_db');
 156          set_config('field_lock_profile_field_pet', 'unlocked', 'auth_db');
 157  
 158          // Init the rest of settings.
 159          set_config('passtype', 'plaintext', 'auth_db');
 160          set_config('changepasswordurl', '', 'auth_db');
 161          set_config('debugauthdb', 0, 'auth_db');
 162          set_config('removeuser', AUTH_REMOVEUSER_KEEP, 'auth_db');
 163      }
 164  
 165      protected function cleanup_auth_database() {
 166          global $DB;
 167  
 168          $dbman = $DB->get_manager();
 169          $table = new \xmldb_table('auth_db_users');
 170          $dbman->drop_table($table);
 171  
 172          ini_set('error_log', $this->oldlog);
 173      }
 174  
 175      public function test_plugin() {
 176          global $DB, $CFG;
 177          require_once($CFG->dirroot . '/user/profile/lib.php');
 178  
 179          $this->resetAfterTest(true);
 180  
 181          // NOTE: It is strongly discouraged to create new tables in advanced_testcase classes,
 182          //       but there is no other simple way to test ext database enrol sync, so let's
 183          //       disable transactions are try to cleanup after the tests.
 184  
 185          $this->preventResetByRollback();
 186  
 187          $this->init_auth_database();
 188  
 189          /** @var auth_plugin_db $auth */
 190          $auth = get_auth_plugin('db');
 191  
 192          $authdb = $auth->db_init();
 193  
 194  
 195          // Test adodb may access the table.
 196  
 197          $user1 = (object)array('name'=>'u1', 'pass'=>'heslo', 'email'=>'u1@example.com');
 198          $user1->id = $DB->insert_record('auth_db_users', $user1);
 199  
 200  
 201          $sql = "SELECT * FROM {$auth->config->table}";
 202          $rs = $authdb->Execute($sql);
 203          $this->assertInstanceOf('ADORecordSet', $rs);
 204          $this->assertFalse($rs->EOF);
 205          $fields = $rs->FetchRow();
 206          $this->assertTrue(is_array($fields));
 207          $this->assertTrue($rs->EOF);
 208          $rs->Close();
 209  
 210          $authdb->Close();
 211  
 212  
 213          // Test bulk user account creation.
 214  
 215          $user2 = (object)['name' => 'u2', 'pass' => 'heslo', 'email' => 'u2@example.com', 'animal' => 'cat'];
 216          $user2->id = $DB->insert_record('auth_db_users', $user2);
 217  
 218          $user3 = (object)array('name'=>'admin', 'pass'=>'heslo', 'email'=>'admin@example.com'); // Should be skipped.
 219          $user3->id = $DB->insert_record('auth_db_users', $user3);
 220  
 221          $this->assertCount(2, $DB->get_records('user'));
 222  
 223          $trace = new \null_progress_trace();
 224  
 225          // Sync users and make sure that two events user_created werer triggered.
 226          $sink = $this->redirectEvents();
 227          $auth->sync_users($trace, false);
 228          $events = $sink->get_events();
 229          $sink->close();
 230          $this->assertCount(2, $events);
 231          $this->assertTrue($events[0] instanceof  \core\event\user_created);
 232          $this->assertTrue($events[1] instanceof  \core\event\user_created);
 233  
 234          // Assert the two users were created.
 235          $this->assertEquals(4, $DB->count_records('user'));
 236          $u1 = $DB->get_record('user', array('username'=>$user1->name, 'auth'=>'db'));
 237          $this->assertSame($user1->email, $u1->email);
 238          $this->assertEmpty(profile_user_record($u1->id)->pet);
 239          $u2 = $DB->get_record('user', array('username'=>$user2->name, 'auth'=>'db'));
 240          $this->assertSame($user2->email, $u2->email);
 241          $this->assertSame($user2->animal, profile_user_record($u2->id)->pet);
 242          $admin = $DB->get_record('user', array('username'=>'admin', 'auth'=>'manual'));
 243          $this->assertNotEmpty($admin);
 244  
 245  
 246          // Test sync updates.
 247  
 248          $user2b = clone($user2);
 249          $user2b->email = 'u2b@example.com';
 250          $user2b->animal = 'dog';
 251          $DB->update_record('auth_db_users', $user2b);
 252  
 253          $auth->sync_users($trace, false);
 254          $this->assertEquals(4, $DB->count_records('user'));
 255          $u2 = $DB->get_record('user', array('username'=>$user2->name));
 256          $this->assertSame($user2->email, $u2->email);
 257          $this->assertSame($user2->animal, profile_user_record($u2->id)->pet);
 258  
 259          $auth->sync_users($trace, true);
 260          $this->assertEquals(4, $DB->count_records('user'));
 261          $u2 = $DB->get_record('user', array('username'=>$user2->name));
 262          $this->assertSame($user2->email, $u2->email);
 263  
 264          set_config('field_updatelocal_email', 'onlogin', 'auth_db');
 265          $auth->config->field_updatelocal_email = 'onlogin';
 266          set_config('field_updatelocal_profile_field_pet', 'onlogin', 'auth_db');
 267          $auth->config->field_updatelocal_profile_field_pet = 'onlogin';
 268  
 269          $auth->sync_users($trace, false);
 270          $this->assertEquals(4, $DB->count_records('user'));
 271          $u2 = $DB->get_record('user', array('username'=>$user2->name));
 272          $this->assertSame($user2->email, $u2->email);
 273  
 274          $auth->sync_users($trace, true);
 275          $this->assertEquals(4, $DB->count_records('user'));
 276          $u2 = $DB->get_record('user', array('username'=>$user2->name));
 277          $this->assertSame($user2b->email, $u2->email);
 278          $this->assertSame($user2b->animal, profile_user_record($u2->id)->pet);
 279  
 280  
 281          // Test sync deletes and suspends.
 282  
 283          $DB->delete_records('auth_db_users', array('id'=>$user2->id));
 284          $this->assertCount(2, $DB->get_records('auth_db_users'));
 285          unset($user2);
 286          unset($user2b);
 287  
 288          $auth->sync_users($trace, false);
 289          $this->assertEquals(4, $DB->count_records('user'));
 290          $this->assertEquals(0, $DB->count_records('user', array('deleted'=>1)));
 291          $this->assertEquals(0, $DB->count_records('user', array('suspended'=>1)));
 292  
 293          set_config('removeuser', AUTH_REMOVEUSER_SUSPEND, 'auth_db');
 294          $auth->config->removeuser = AUTH_REMOVEUSER_SUSPEND;
 295  
 296          $auth->sync_users($trace, false);
 297          $this->assertEquals(4, $DB->count_records('user'));
 298          $this->assertEquals(0, $DB->count_records('user', array('deleted'=>1)));
 299          $this->assertEquals(1, $DB->count_records('user', array('suspended'=>1)));
 300  
 301          $user2 = (object)array('name'=>'u2', 'pass'=>'heslo', 'email'=>'u2@example.com');
 302          $user2->id = $DB->insert_record('auth_db_users', $user2);
 303  
 304          $auth->sync_users($trace, false);
 305          $this->assertEquals(4, $DB->count_records('user'));
 306          $this->assertEquals(0, $DB->count_records('user', array('deleted'=>1)));
 307          $this->assertEquals(0, $DB->count_records('user', array('suspended'=>1)));
 308  
 309          $DB->delete_records('auth_db_users', array('id'=>$user2->id));
 310  
 311          set_config('removeuser', AUTH_REMOVEUSER_FULLDELETE, 'auth_db');
 312          $auth->config->removeuser = AUTH_REMOVEUSER_FULLDELETE;
 313  
 314          $auth->sync_users($trace, false);
 315          $this->assertEquals(4, $DB->count_records('user'));
 316          $this->assertEquals(1, $DB->count_records('user', array('deleted'=>1)));
 317          $this->assertEquals(0, $DB->count_records('user', array('suspended'=>1)));
 318  
 319          $user2 = (object)array('name'=>'u2', 'pass'=>'heslo', 'email'=>'u2@example.com');
 320          $user2->id = $DB->insert_record('auth_db_users', $user2);
 321  
 322          $auth->sync_users($trace, false);
 323          $this->assertEquals(5, $DB->count_records('user'));
 324          $this->assertEquals(1, $DB->count_records('user', array('deleted'=>1)));
 325          $this->assertEquals(0, $DB->count_records('user', array('suspended'=>1)));
 326  
 327  
 328          // Test user_login().
 329  
 330          $user3 = (object)array('name'=>'u3', 'pass'=>'heslo', 'email'=>'u3@example.com');
 331          $user3->id = $DB->insert_record('auth_db_users', $user3);
 332  
 333          $this->assertFalse($auth->user_login('u4', 'heslo'));
 334          $this->assertTrue($auth->user_login('u1', 'heslo'));
 335  
 336          $this->assertFalse($DB->record_exists('user', array('username'=>'u3', 'auth'=>'db')));
 337          $this->assertTrue($auth->user_login('u3', 'heslo'));
 338          $this->assertFalse($DB->record_exists('user', array('username'=>'u3', 'auth'=>'db')));
 339  
 340          set_config('passtype', 'md5', 'auth_db');
 341          $auth->config->passtype = 'md5';
 342          $user3->pass = md5('heslo');
 343          $DB->update_record('auth_db_users', $user3);
 344          $this->assertTrue($auth->user_login('u3', 'heslo'));
 345  
 346          // Test user created to see if the checking happens strictly.
 347          $usermd5 = (object)['name' => 'usermd5', 'pass' => '0e462097431906509019562988736854'];
 348          $usermd5->id = $DB->insert_record('auth_db_users', $usermd5);
 349  
 350          // md5('240610708') === '0e462097431906509019562988736854'.
 351          $this->assertTrue($auth->user_login('usermd5', '240610708'));
 352          $this->assertFalse($auth->user_login('usermd5', 'QNKCDZO'));
 353  
 354          set_config('passtype', 'sh1', 'auth_db');
 355          $auth->config->passtype = 'sha1';
 356          $user3->pass = sha1('heslo');
 357          $DB->update_record('auth_db_users', $user3);
 358          $this->assertTrue($auth->user_login('u3', 'heslo'));
 359  
 360          // Test user created to see if the checking happens strictly.
 361          $usersha1 = (object)['name' => 'usersha1', 'pass' => '0e66507019969427134894567494305185566735'];
 362          $usersha1->id = $DB->insert_record('auth_db_users', $usersha1);
 363  
 364          // sha1('aaroZmOk') === '0e66507019969427134894567494305185566735'.
 365          $this->assertTrue($auth->user_login('usersha1', 'aaroZmOk'));
 366          $this->assertFalse($auth->user_login('usersha1', 'aaK1STfY'));
 367  
 368          set_config('passtype', 'saltedcrypt', 'auth_db');
 369          $auth->config->passtype = 'saltedcrypt';
 370          $user3->pass = password_hash('heslo', PASSWORD_BCRYPT);
 371          $DB->update_record('auth_db_users', $user3);
 372          $this->assertTrue($auth->user_login('u3', 'heslo'));
 373  
 374          set_config('passtype', 'internal', 'auth_db');
 375          $auth->config->passtype = 'internal';
 376          create_user_record('u3', 'heslo', 'db');
 377          $this->assertTrue($auth->user_login('u3', 'heslo'));
 378  
 379  
 380          $DB->delete_records('auth_db_users', array('id'=>$user3->id));
 381  
 382          set_config('removeuser', AUTH_REMOVEUSER_KEEP, 'auth_db');
 383          $auth->config->removeuser = AUTH_REMOVEUSER_KEEP;
 384          $this->assertTrue($auth->user_login('u3', 'heslo'));
 385  
 386          set_config('removeuser', AUTH_REMOVEUSER_SUSPEND, 'auth_db');
 387          $auth->config->removeuser = AUTH_REMOVEUSER_SUSPEND;
 388          $this->assertFalse($auth->user_login('u3', 'heslo'));
 389  
 390          set_config('removeuser', AUTH_REMOVEUSER_FULLDELETE, 'auth_db');
 391          $auth->config->removeuser = AUTH_REMOVEUSER_FULLDELETE;
 392          $this->assertFalse($auth->user_login('u3', 'heslo'));
 393  
 394          set_config('passtype', 'sh1', 'auth_db');
 395          $auth->config->passtype = 'sha1';
 396          $this->assertFalse($auth->user_login('u3', 'heslo'));
 397  
 398  
 399          // Test login create and update.
 400  
 401          $user4 = (object)array('name'=>'u4', 'pass'=>'heslo', 'email'=>'u4@example.com');
 402          $user4->id = $DB->insert_record('auth_db_users', $user4);
 403  
 404          set_config('passtype', 'plaintext', 'auth_db');
 405          $auth->config->passtype = 'plaintext';
 406  
 407          $iuser4 = create_user_record('u4', 'heslo', 'db');
 408          $this->assertNotEmpty($iuser4);
 409          $this->assertSame($user4->name, $iuser4->username);
 410          $this->assertSame($user4->email, $iuser4->email);
 411          $this->assertSame('db', $iuser4->auth);
 412          $this->assertSame($CFG->mnet_localhost_id, $iuser4->mnethostid);
 413  
 414          $user4b = clone($user4);
 415          $user4b->email = 'u4b@example.com';
 416          $DB->update_record('auth_db_users', $user4b);
 417  
 418          set_config('field_updatelocal_email', 'oncreate', 'auth_db');
 419          $auth->config->field_updatelocal_email = 'oncreate';
 420  
 421          update_user_record('u4');
 422          $iuser4 = $DB->get_record('user', array('id'=>$iuser4->id));
 423          $this->assertSame($user4->email, $iuser4->email);
 424  
 425          set_config('field_updatelocal_email', 'onlogin', 'auth_db');
 426          $auth->config->field_updatelocal_email = 'onlogin';
 427  
 428          update_user_record('u4');
 429          $iuser4 = $DB->get_record('user', array('id'=>$iuser4->id));
 430          $this->assertSame($user4b->email, $iuser4->email);
 431  
 432  
 433          // Test user_exists()
 434  
 435          $this->assertTrue($auth->user_exists('u1'));
 436          $this->assertTrue($auth->user_exists('admin'));
 437          $this->assertFalse($auth->user_exists('u3'));
 438          $this->assertTrue($auth->user_exists('u4'));
 439  
 440          $this->cleanup_auth_database();
 441      }
 442  
 443      /**
 444       * Testing the function _colonscope() from ADOdb.
 445       */
 446      public function test_adodb_colonscope() {
 447          global $CFG;
 448          require_once($CFG->libdir.'/adodb/adodb.inc.php');
 449          require_once($CFG->libdir.'/adodb/drivers/adodb-odbc.inc.php');
 450          require_once($CFG->libdir.'/adodb/drivers/adodb-db2ora.inc.php');
 451  
 452          $this->resetAfterTest(false);
 453  
 454          $sql = "select * from table WHERE column=:1 AND anothercolumn > :0";
 455          $arr = array('b', 1);
 456          list($sqlout, $arrout) = _colonscope($sql,$arr);
 457          $this->assertEquals("select * from table WHERE column=? AND anothercolumn > ?", $sqlout);
 458          $this->assertEquals(array(1, 'b'), $arrout);
 459      }
 460  
 461      /**
 462       * Testing the clean_data() method.
 463       */
 464      public function test_clean_data() {
 465          global $DB;
 466  
 467          $this->resetAfterTest(false);
 468          $this->preventResetByRollback();
 469          $this->init_auth_database();
 470          $auth = get_auth_plugin('db');
 471          $auth->db_init();
 472  
 473          // Create users on external table.
 474          $extdbuser1 = (object)array('name'=>'u1', 'pass'=>'heslo', 'email'=>'u1@example.com');
 475          $extdbuser1->id = $DB->insert_record('auth_db_users', $extdbuser1);
 476  
 477          // User with malicious data on the name (won't be imported).
 478          $extdbuser2 = (object)array('name'=>'user<script>alert(1);</script>xss', 'pass'=>'heslo', 'email'=>'xssuser@example.com');
 479          $extdbuser2->id = $DB->insert_record('auth_db_users', $extdbuser2);
 480  
 481          $extdbuser3 = (object)array('name'=>'u3', 'pass'=>'heslo', 'email'=>'u3@example.com',
 482                  'lastname' => 'user<script>alert(1);</script>xss');
 483          $extdbuser3->id = $DB->insert_record('auth_db_users', $extdbuser3);
 484          $trace = new \null_progress_trace();
 485  
 486          // Let's test user sync make sure still works as expected..
 487          $auth->sync_users($trace, true);
 488          $this->assertDebuggingCalled("The property 'lastname' has invalid data and has been cleaned.");
 489          // User with correct data, should be equal to external db.
 490          $user1 = $DB->get_record('user', array('email'=> $extdbuser1->email, 'auth'=>'db'));
 491          $this->assertEquals($extdbuser1->name, $user1->username);
 492          $this->assertEquals($extdbuser1->email, $user1->email);
 493  
 494          // Get the user on moodle user table.
 495          $user2 = $DB->get_record('user', array('email'=> $extdbuser2->email, 'auth'=>'db'));
 496          $user3 = $DB->get_record('user', array('email'=> $extdbuser3->email, 'auth'=>'db'));
 497  
 498          $this->assertEmpty($user2);
 499          $this->assertEquals($extdbuser3->name, $user3->username);
 500          $this->assertEquals('useralert(1);xss', $user3->lastname);
 501  
 502          $this->cleanup_auth_database();
 503      }
 504  
 505      /**
 506       * Testing the deletion of a user when there are many users in the external DB.
 507       */
 508      public function test_deleting_with_many_users() {
 509          global $DB;
 510  
 511          $this->resetAfterTest(true);
 512          $this->preventResetByRollback();
 513          $this->init_auth_database();
 514          $auth = get_auth_plugin('db');
 515          $auth->db_init();
 516  
 517          // Set to delete from moodle when missing from DB.
 518          set_config('removeuser', AUTH_REMOVEUSER_FULLDELETE, 'auth_db');
 519          $auth->config->removeuser = AUTH_REMOVEUSER_FULLDELETE;
 520  
 521          // Create users.
 522          $users = [];
 523          for ($i = 0; $i < $this->largedeletionsetsize; $i++) {
 524              $user = (object)array('username' => "u$i", 'name' => "u$i", 'pass' => 'heslo', 'email' => "u$i@example.com");
 525              $user->id  = $DB->insert_record('auth_db_users', $user);
 526              $users[] = $user;
 527          }
 528  
 529          // Sync to moodle.
 530          $trace = new \null_progress_trace();
 531          $auth->sync_users($trace, true);
 532  
 533          // Check user is there.
 534          $user = array_shift($users);
 535          $moodleuser = $DB->get_record('user', array('email' => $user->email, 'auth' => 'db'));
 536          $this->assertNotNull($moodleuser);
 537          $this->assertEquals($user->username, $moodleuser->username);
 538  
 539          // Delete a user.
 540          $DB->delete_records('auth_db_users', array('id' => $user->id));
 541  
 542          // Sync again.
 543          $auth->sync_users($trace, true);
 544  
 545          // Check user is no longer there.
 546          $moodleuser = $DB->get_record('user', array('id' => $moodleuser->id));
 547          $this->assertFalse($auth->user_login($user->username, 'heslo'));
 548          $this->assertEquals(1, $moodleuser->deleted);
 549  
 550          // Make sure it was the only user deleted.
 551          $numberdeleted = $DB->count_records('user', array('deleted' => 1, 'auth' => 'db'));
 552          $this->assertEquals(1, $numberdeleted);
 553  
 554          $this->cleanup_auth_database();
 555      }
 556  }