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✏️ Editing: auth_ldap_test.php

<?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/>.

namespace auth_ldap;

/**
 * LDAP authentication plugin tests.
 *
 * NOTE: in order to execute this test you need to set up
 *       OpenLDAP server with core, cosine, nis and internet schemas
 *       and add configuration constants to config.php or phpunit.xml configuration file:
 *
 * define('TEST_AUTH_LDAP_HOST_URL', 'ldap://127.0.0.1');
 * define('TEST_AUTH_LDAP_BIND_DN', 'cn=someuser,dc=example,dc=local');
 * define('TEST_AUTH_LDAP_BIND_PW', 'somepassword');
 * define('TEST_AUTH_LDAP_DOMAIN', 'dc=example,dc=local');
 *
 * @package    auth_ldap
 * @copyright  2013 Petr Skoda {@link http://skodak.org}
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

use auth_plugin_ldap;
use auth_ldap\task\{
    sync_task,
    asynchronous_sync_task,
};

/**
 * LDAP authentication plugin tests.
 *
 * @package    auth_ldap
 * @copyright  2013 Petr Skoda {@link http://skodak.org}
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class auth_ldap_test extends \advanced_testcase {

public static function setUpBeforeClass(): void {
        global $CFG;
        parent::setUpBeforeClass();

require_once($CFG->dirroot . '/auth/ldap/auth.php');
        require_once($CFG->libdir . '/ldaplib.php');
    }

/**
     * Data provider for auth_ldap tests
     *
     * Used to ensure that all the paged stuff works properly, irrespectively
     * of the pagesize configured (that implies all the chunking and paging
     * built in the plugis is doing its work consistently). Both searching and
     * not searching within subcontexts.
     *
     * @return array[]
     */
    public function auth_ldap_provider() {
        $pagesizes = [1, 3, 5, 1000];
        $subcontexts = [0, 1];
        $combinations = [];
        foreach ($pagesizes as $pagesize) {
            foreach ($subcontexts as $subcontext) {
                $combinations["pagesize {$pagesize}, subcontexts {$subcontext}"] = [$pagesize, $subcontext];
            }
        }
        return $combinations;
    }

/**
     * General auth_ldap testcase
     *
     * @dataProvider auth_ldap_provider
     * @param int $pagesize Value to be configured in settings controlling page size.
     * @param int $subcontext Value to be configured in settings controlling searching in subcontexts.
     */
    public function test_auth_ldap(int $pagesize, int $subcontext) {
        global $DB;

if (!extension_loaded('ldap')) {
            $this->markTestSkipped('LDAP extension is not loaded.');
        }

$this->resetAfterTest();

if (!defined('TEST_AUTH_LDAP_HOST_URL') or !defined('TEST_AUTH_LDAP_BIND_DN') or !defined('TEST_AUTH_LDAP_BIND_PW') or !defined('TEST_AUTH_LDAP_DOMAIN')) {
            $this->markTestSkipped('External LDAP test server not configured.');
        }

// Make sure we can connect the server.
        $debuginfo = '';
        if (!$connection = ldap_connect_moodle(TEST_AUTH_LDAP_HOST_URL, 3, 'rfc2307', TEST_AUTH_LDAP_BIND_DN, TEST_AUTH_LDAP_BIND_PW, LDAP_DEREF_NEVER, $debuginfo, false)) {
            $this->markTestSkipped('Can not connect to LDAP test server: '.$debuginfo);
        }

$this->enable_plugin();

// Create new empty test container.
        $topdn = 'dc=moodletest,'.TEST_AUTH_LDAP_DOMAIN;

$this->recursive_delete($connection, TEST_AUTH_LDAP_DOMAIN, 'dc=moodletest');

$o = array();
        $o['objectClass'] = array('dcObject', 'organizationalUnit');
        $o['dc']         = 'moodletest';
        $o['ou']         = 'MOODLETEST';
        if (!ldap_add($connection, 'dc=moodletest,'.TEST_AUTH_LDAP_DOMAIN, $o)) {
            $this->markTestSkipped('Can not create test LDAP container.');
        }

// Create a few users.
        $o = array();
        $o['objectClass'] = array('organizationalUnit');
        $o['ou']          = 'users';
        ldap_add($connection, 'ou='.$o['ou'].','.$topdn, $o);

$createdusers = array();
        for ($i=1; $i<=5; $i++) {
            $this->create_ldap_user($connection, $topdn, $i);
            $createdusers[] = 'username' . $i;
        }

// Set up creators group.
        $assignedroles = array('username1', 'username2');
        $o = array();
        $o['objectClass'] = array('posixGroup');
        $o['cn']          = 'creators';
        $o['gidNumber']   = 1;
        $o['memberUid']   = $assignedroles;
        ldap_add($connection, 'cn='.$o['cn'].','.$topdn, $o);

$creatorrole = $DB->get_record('role', array('shortname'=>'coursecreator'));
        $this->assertNotEmpty($creatorrole);

// Configure the plugin a bit.
        set_config('host_url', TEST_AUTH_LDAP_HOST_URL, 'auth_ldap');
        set_config('start_tls', 0, 'auth_ldap');
        set_config('ldap_version', 3, 'auth_ldap');
        set_config('ldapencoding', 'utf-8', 'auth_ldap');
        set_config('pagesize', $pagesize, 'auth_ldap');
        set_config('bind_dn', TEST_AUTH_LDAP_BIND_DN, 'auth_ldap');
        set_config('bind_pw', TEST_AUTH_LDAP_BIND_PW, 'auth_ldap');
        set_config('user_type', 'rfc2307', 'auth_ldap');
        set_config('contexts', 'ou=users,'.$topdn, 'auth_ldap');
        set_config('search_sub', $subcontext, 'auth_ldap');
        set_config('opt_deref', LDAP_DEREF_NEVER, 'auth_ldap');
        set_config('user_attribute', 'cn', 'auth_ldap');
        set_config('memberattribute', 'memberuid', 'auth_ldap');
        set_config('memberattribute_isdn', 0, 'auth_ldap');
        set_config('coursecreatorcontext', 'cn=creators,'.$topdn, 'auth_ldap');
        set_config('removeuser', AUTH_REMOVEUSER_KEEP, 'auth_ldap');

set_config('field_map_email', 'mail', 'auth_ldap');
        set_config('field_updatelocal_email', 'oncreate', 'auth_ldap');
        set_config('field_updateremote_email', '0', 'auth_ldap');
        set_config('field_lock_email', 'unlocked', 'auth_ldap');

set_config('field_map_firstname', 'givenName', 'auth_ldap');
        set_config('field_updatelocal_firstname', 'oncreate', 'auth_ldap');
        set_config('field_updateremote_firstname', '0', 'auth_ldap');
        set_config('field_lock_firstname', 'unlocked', 'auth_ldap');

$this->assertEquals(2, $DB->count_records('user'));
        $this->assertEquals(0, $DB->count_records('role_assignments'));

/** @var \auth_plugin_ldap $auth */
        $auth = get_auth_plugin('ldap');

ob_start();
        $sink = $this->redirectEvents();
        $auth->sync_users(true);
        $events = $sink->get_events();
        $sink->close();
        ob_end_clean();

// Check events, 5 users created with 2 users having roles.
        $this->assertCount(7, $events);
        foreach ($events as $index => $event) {
            $username = $DB->get_field('user', 'username', array('id' => $event->relateduserid)); // Get username.

if ($event->eventname === '\core\event\user_created') {
                $this->assertContains($username, $createdusers);
                unset($events[$index]); // Remove matching event.

} else if ($event->eventname === '\core\event\role_assigned') {
                $this->assertContains($username, $assignedroles);
                unset($events[$index]); // Remove matching event.

} else {
                $this->fail('Unexpected event found: ' . $event->eventname);
            }
        }
        // If all the user_created and role_assigned events have matched
        // then the $events array should be now empty.
        $this->assertCount(0, $events);

$this->assertEquals(5, $DB->count_records('user', array('auth'=>'ldap')));
        $this->assertEquals(2, $DB->count_records('role_assignments'));
        $this->assertEquals(2, $DB->count_records('role_assignments', array('roleid'=>$creatorrole->id)));

for ($i=1; $i<=5; $i++) {
            $this->assertTrue($DB->record_exists('user', array('username'=>'username'.$i, 'email'=>'user'.$i.'@example.com', 'firstname'=>'Firstname'.$i, 'lastname'=>'Lastname'.$i)));
        }

$this->delete_ldap_user($connection, $topdn, 1);

ob_start();
        $sink = $this->redirectEvents();
        $auth->sync_users(true);
        $events = $sink->get_events();
        $sink->close();
        ob_end_clean();

// Check events, no new event.
        $this->assertCount(0, $events);

$this->assertEquals(5, $DB->count_records('user', array('auth'=>'ldap')));
        $this->assertEquals(0, $DB->count_records('user', array('suspended'=>1)));
        $this->assertEquals(0, $DB->count_records('user', array('deleted'=>1)));
        $this->assertEquals(2, $DB->count_records('role_assignments'));
        $this->assertEquals(2, $DB->count_records('role_assignments', array('roleid'=>$creatorrole->id)));

set_config('removeuser', AUTH_REMOVEUSER_SUSPEND, 'auth_ldap');

/** @var \auth_plugin_ldap $auth */
        $auth = get_auth_plugin('ldap');

ob_start();
        $sink = $this->redirectEvents();
        $auth->sync_users(true);
        $events = $sink->get_events();
        $sink->close();
        ob_end_clean();

// Check events, 1 user got updated.
        $this->assertCount(1, $events);
        $event = reset($events);
        $this->assertInstanceOf('\core\event\user_updated', $event);

$this->assertEquals(5, $DB->count_records('user', array('auth'=>'ldap')));
        $this->assertEquals(0, $DB->count_records('user', array('auth'=>'nologin', 'username'=>'username1')));
        $this->assertEquals(1, $DB->count_records('user', array('auth'=>'ldap', 'suspended'=>'1', 'username'=>'username1')));
        $this->assertEquals(0, $DB->count_records('user', array('deleted'=>1)));
        $this->assertEquals(2, $DB->count_records('role_assignments'));
        $this->assertEquals(2, $DB->count_records('role_assignments', array('roleid'=>$creatorrole->id)));

$this->create_ldap_user($connection, $topdn, 1);

ob_start();
        $sink = $this->redirectEvents();
        $auth->sync_users(true);
        $events = $sink->get_events();
        $sink->close();
        ob_end_clean();

// Check events, 1 user got updated.
        $this->assertCount(1, $events);
        $event = reset($events);
        $this->assertInstanceOf('\core\event\user_updated', $event);

$DB->set_field('user', 'auth', 'nologin', array('username'=>'username1'));

ob_start();
        $sink = $this->redirectEvents();
        $auth->sync_users(true);
        $events = $sink->get_events();
        $sink->close();
        ob_end_clean();

// Check events, 1 user got updated.
        $this->assertCount(1, $events);
        $event = reset($events);
        $this->assertInstanceOf('\core\event\user_updated', $event);

set_config('removeuser', AUTH_REMOVEUSER_FULLDELETE, 'auth_ldap');

/** @var \auth_plugin_ldap $auth */
        $auth = get_auth_plugin('ldap');

$this->delete_ldap_user($connection, $topdn, 1);

ob_start();
        $sink = $this->redirectEvents();
        $auth->sync_users(true);
        $events = $sink->get_events();
        $sink->close();
        ob_end_clean();

// Check events, 2 events role_unassigned and user_deleted.
        $this->assertCount(2, $events);
        $event = array_pop($events);
        $this->assertInstanceOf('\core\event\user_deleted', $event);
        $event = array_pop($events);
        $this->assertInstanceOf('\core\event\role_unassigned', $event);

$this->assertEquals(5, $DB->count_records('user', array('auth'=>'ldap')));
        $this->assertEquals(0, $DB->count_records('user', array('username'=>'username1')));
        $this->assertEquals(0, $DB->count_records('user', array('suspended'=>1)));
        $this->assertEquals(1, $DB->count_records('user', array('deleted'=>1)));
        $this->assertEquals(1, $DB->count_records('role_assignments'));
        $this->assertEquals(1, $DB->count_records('role_assignments', array('roleid'=>$creatorrole->id)));

$this->create_ldap_user($connection, $topdn, 1);

ob_start();
        $sink = $this->redirectEvents();
        $auth->sync_users(true);
        $events = $sink->get_events();
        $sink->close();
        ob_end_clean();

// Check events, 2 events role_assigned and user_created.
        $this->assertCount(2, $events);
        $event = array_pop($events);
        $this->assertInstanceOf('\core\event\role_assigned', $event);
        $event = array_pop($events);
        $this->assertInstanceOf('\core\event\user_created', $event);

$this->assertEquals(6, $DB->count_records('user', array('auth'=>'ldap')));
        $this->assertEquals(1, $DB->count_records('user', array('username'=>'username1')));
        $this->assertEquals(0, $DB->count_records('user', array('suspended'=>1)));
        $this->assertEquals(1, $DB->count_records('user', array('deleted'=>1)));
        $this->assertEquals(2, $DB->count_records('role_assignments'));
        $this->assertEquals(2, $DB->count_records('role_assignments', array('roleid'=>$creatorrole->id)));

// Let's test syncing users in chunks of '1'.
        set_config('field_updatelocal_email', 'onlogin', 'auth_ldap');
        set_config('sync_updateuserchunk', 1, 'auth_ldap');

/** @var auth_plugin_ldap $auth */
        $auth = get_auth_plugin('ldap');

$count = 0;
        ob_start();
        $auth->sync_users_update_callback(function ($users, $updatekeys) use (&$count) {
            $count++;
        });
        ob_end_clean();
        // After updating in chunks of '1', we should have counted more than one update.
        $this->assertGreaterThan(1, $count);

ob_start();
        \core\cron::setup_user();
        $cron = new sync_task();
        $cron->execute();

$this->runAdhocTasks('\auth_ldap\task\asynchronous_sync_task');
        $output = ob_get_contents();
        ob_end_clean();

// Use Reflection to make protected constants available.
        $rp = new \ReflectionClassConstant(sync_task::class, 'MTRACE_MSG');
        $synctaskmsg = $rp->getValue();
        $rp = new \ReflectionClassConstant(asynchronous_sync_task::class, 'MTRACE_MSG');
        $asynctaskmsg = $rp->getValue();

$this->assertMatchesRegularExpression(
            sprintf('/%s.*%s/s', $synctaskmsg, $asynctaskmsg),
            $output
        );

$this->recursive_delete($connection, TEST_AUTH_LDAP_DOMAIN, 'dc=moodletest');
        ldap_close($connection);
    }

/**
     * Test logging in via LDAP calls a user_loggedin event.
     */
    public function test_ldap_user_loggedin_event() {
        global $CFG, $DB, $USER;

$this->resetAfterTest();

$this->assertFalse(isloggedin());
        $user = $DB->get_record('user', array('username'=>'admin'));

// Note: we are just going to trigger the function that calls the event,
        // not actually perform a LDAP login, for the sake of sanity.
        $ldap = new \auth_plugin_ldap();

// Set the key for the cache flag we want to set which is used by LDAP.
        set_cache_flag($ldap->pluginconfig . '/ntlmsess', sesskey(), $user->username, AUTH_NTLMTIMEOUT);

// We are going to need to set the sesskey as the user's password in order for the LDAP log in to work.
        update_internal_user_password($user, sesskey());

// The function ntlmsso_finish is responsible for triggering the event, so call it directly and catch the event.
        $sink = $this->redirectEvents();
        // We need to supress this function call, or else we will get the message "session_regenerate_id(): Cannot
        // regenerate session id - headers already sent" as the ntlmsso_finish function calls complete_user_login
        @$ldap->ntlmsso_finish();
        $events = $sink->get_events();
        $sink->close();

// Check that the event is valid.
        $this->assertCount(1, $events);
        $event = reset($events);
        $this->assertInstanceOf('\core\event\user_loggedin', $event);
        $this->assertEquals('user', $event->objecttable);
        $this->assertEquals('2', $event->objectid);
        $this->assertEquals(\context_system::instance()->id, $event->contextid);
    }

/**
     * Test logging in via LDAP calls a user_loggedin event.
     */
    public function test_ldap_user_signup() {
        global $CFG, $DB;

// User to create.
        $user = array(
            'username' => 'usersignuptest1',
            'password' => 'Moodle2014!',
            'idnumber' => 'idsignuptest1',
            'firstname' => 'First Name User Test 1',
            'lastname' => 'Last Name User Test 1',
            'middlename' => 'Middle Name User Test 1',
            'lastnamephonetic' => '最後のお名前のテスト一号',
            'firstnamephonetic' => 'お名前のテスト一号',
            'alternatename' => 'Alternate Name User Test 1',
            'email' => 'usersignuptest1@example.com',
            'description' => 'This is a description for user 1',
            'city' => 'Perth',
            'country' => 'AU',
            'mnethostid' => $CFG->mnet_localhost_id,
            'auth' => 'ldap'
            );

if (!extension_loaded('ldap')) {
            $this->markTestSkipped('LDAP extension is not loaded.');
        }

$this->resetAfterTest();

$this->enable_plugin();

// Create new empty test container.
        $topdn = 'dc=moodletest,'.TEST_AUTH_LDAP_DOMAIN;

$this->recursive_delete($connection, TEST_AUTH_LDAP_DOMAIN, 'dc=moodletest');

// Configure the plugin a bit.
        set_config('host_url', TEST_AUTH_LDAP_HOST_URL, 'auth_ldap');
        set_config('start_tls', 0, 'auth_ldap');
        set_config('ldap_version', 3, 'auth_ldap');
        set_config('ldapencoding', 'utf-8', 'auth_ldap');
        set_config('pagesize', '2', 'auth_ldap');
        set_config('bind_dn', TEST_AUTH_LDAP_BIND_DN, 'auth_ldap');
        set_config('bind_pw', TEST_AUTH_LDAP_BIND_PW, 'auth_ldap');
        set_config('user_type', 'rfc2307', 'auth_ldap');
        set_config('contexts', 'ou=users,'.$topdn, 'auth_ldap');
        set_config('search_sub', 0, 'auth_ldap');
        set_config('opt_deref', LDAP_DEREF_NEVER, 'auth_ldap');
        set_config('user_attribute', 'cn', 'auth_ldap');
        set_config('memberattribute', 'memberuid', 'auth_ldap');
        set_config('memberattribute_isdn', 0, 'auth_ldap');
        set_config('creators', 'cn=creators,'.$topdn, 'auth_ldap');
        set_config('removeuser', AUTH_REMOVEUSER_KEEP, 'auth_ldap');

set_config('field_map_lastname', 'sn', 'auth_ldap');
        set_config('field_updatelocal_lastname', 'oncreate', 'auth_ldap');
        set_config('field_updateremote_lastname', '0', 'auth_ldap');
        set_config('field_lock_lastname', 'unlocked', 'auth_ldap');
        set_config('passtype', 'md5', 'auth_ldap');
        set_config('create_context', 'ou=users,'.$topdn, 'auth_ldap');

$this->assertEquals(2, $DB->count_records('user'));
        $this->assertEquals(0, $DB->count_records('role_assignments'));

/** @var \auth_plugin_ldap $auth */
        $auth = get_auth_plugin('ldap');

$sink = $this->redirectEvents();
        $mailsink = $this->redirectEmails();
        $auth->user_signup((object)$user, false);
        $this->assertEquals(1, $mailsink->count());
        $events = $sink->get_events();
        $sink->close();

// Verify 2 events get generated.
        $this->assertCount(2, $events);

// Get record from db.
        $dbuser = $DB->get_record('user', array('username' => $user['username']));
        $user['id'] = $dbuser->id;

// Last event is user_created.
        $event = array_pop($events);
        $this->assertInstanceOf('\core\event\user_created', $event);
        $this->assertEquals($user['id'], $event->objectid);
        $this->assertEquals(\context_user::instance($user['id']), $event->get_context());

// First event is user_password_updated.
        $event = array_pop($events);
        $this->assertInstanceOf('\core\event\user_password_updated', $event);
        $this->assertEventContextNotUsed($event);

// Delete user which we just created.
        ldap_delete($connection, 'cn='.$user['username'].',ou=users,'.$topdn);
    }

protected function create_ldap_user($connection, $topdn, $i) {
        $o = array();
        $o['objectClass']   = array('inetOrgPerson', 'organizationalPerson', 'person', 'posixAccount');
        $o['cn']            = 'username'.$i;
        $o['sn']            = 'Lastname'.$i;
        $o['givenName']     = 'Firstname'.$i;
        $o['uid']           = $o['cn'];
        $o['uidnumber']     = 2000+$i;
        $o['gidNumber']     = 1000+$i;
        $o['homeDirectory'] = '/';
        $o['mail']          = 'user'.$i.'@example.com';
        $o['userPassword']  = 'pass'.$i;
        ldap_add($connection, 'cn='.$o['cn'].',ou=users,'.$topdn, $o);
    }

protected function delete_ldap_user($connection, $topdn, $i) {
        ldap_delete($connection, 'cn=username'.$i.',ou=users,'.$topdn);
    }

protected function enable_plugin() {
        $auths = get_enabled_auth_plugins();
        if (!in_array('ldap', $auths)) {
            $auths[] = 'ldap';

}
        set_config('auth', implode(',', $auths));
    }

protected function recursive_delete($connection, $dn, $filter) {
        if ($res = ldap_list($connection, $dn, $filter, array('dn'))) {
            $info = ldap_get_entries($connection, $res);
            ldap_free_result($res);
            if ($info['count'] > 0) {
                if ($res = ldap_search($connection, "$filter,$dn", 'cn=*', array('dn'))) {
                    $info = ldap_get_entries($connection, $res);
                    ldap_free_result($res);
                    foreach ($info as $i) {
                        if (isset($i['dn'])) {
                            ldap_delete($connection, $i['dn']);
                        }
                    }
                }
                if ($res = ldap_search($connection, "$filter,$dn", 'ou=*', array('dn'))) {
                    $info = ldap_get_entries($connection, $res);
                    ldap_free_result($res);
                    foreach ($info as $i) {
                        if (isset($i['dn']) and $info[0]['dn'] != $i['dn']) {
                            ldap_delete($connection, $i['dn']);
                        }
                    }
                }
                ldap_delete($connection, "$filter,$dn");
            }
        }
    }
}

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