Proyectos de Subversion Moodle

<?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.

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// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

namespace factor_totp;

defined('MOODLE_INTERNAL') || die();

require_once(__DIR__.'/../extlib/OTPHP/OTPInterface.php');

require_once(__DIR__.'/../extlib/OTPHP/TOTPInterface.php');

require_once(__DIR__.'/../extlib/OTPHP/ParameterTrait.php');

require_once(__DIR__.'/../extlib/OTPHP/InternalClock.php');

require_once(__DIR__.'/../extlib/OTPHP/OTP.php');

require_once(__DIR__.'/../extlib/OTPHP/TOTP.php');

require_once(__DIR__.'/../extlib/ParagonIE/ConstantTime/EncoderInterface.php');

require_once(__DIR__.'/../extlib/ParagonIE/ConstantTime/Binary.php');

require_once(__DIR__.'/../extlib/ParagonIE/ConstantTime/Base32.php');

/**

 * Tests for TOTP factor.

 *

 * @covers      \factor_totp\factor

 * @package     factor_totp

 * @author      Peter Burnett <peterburnett@catalyst-au.net>

 * @copyright   Catalyst IT

 * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

final class factor_test extends \advanced_testcase {

    /**

     * Test code validation of the TOTP factor

     */

    public function test_validate_code(): void {

        global $DB;

        $clock = $this->mock_clock_with_frozen(10000000);

        $this->resetAfterTest(true);

        $user = $this->getDataGenerator()->create_user();

        $this->setUser($user);

        // Setup test staples.

        $totp = \OTPHP\TOTP::create('fakekey', clock: $clock);

        $window = 29;

        set_config('enabled', 1, 'factor_totp');

        $totpfactor = \tool_mfa\plugininfo\factor::get_factor('totp');

        $totpdata = [

            'secret' => 'fakekey',

            'devicename' => 'fakedevice',

        ];

        $factorinstance = $totpfactor->setup_user_factor((object) $totpdata);

        // First check that a valid code is actually valid.

        $code = $totp->at($clock->time());

        // Manually set timeverified of factor.

        $DB->set_field('tool_mfa', 'lastverified', $clock->time() - WEEKSECS, ['id' => $factorinstance->id]);

        $result = $totpfactor->validate_code($code, $window, $totp, $factorinstance);

        $this->assertEquals($totpfactor::TOTP_VALID, $result);

        // Now update timeverified to 20 seconds ago, and check codes within window is blocked.

        $code = $totp->at($clock->time() - (20));

        $DB->set_field('tool_mfa', 'lastverified', $clock->time() - (20), ['id' => $factorinstance->id]);

        $result = $totpfactor->validate_code($code, $window, $totp, $factorinstance);

        $this->assertEquals($totpfactor::TOTP_USED, $result);

        // Now update timeverified to 20 seconds ago, and check code from current increment within window is blocked.

        $code = $totp->at($clock->time());

        $DB->set_field('tool_mfa', 'lastverified', $clock->time() - (20), ['id' => $factorinstance->id]);

        $result = $totpfactor->validate_code($code, $window, $totp, $factorinstance);

        $this->assertEquals($totpfactor::TOTP_USED, $result);

        // Now check future codes.

        $window = 1;

        $code = $totp->at($clock->time() + (2 * MINSECS));

        $DB->set_field('tool_mfa', 'lastverified', $clock->time() - WEEKSECS, ['id' => $factorinstance->id]);

        $result = $totpfactor->validate_code($code, $window, $totp, $factorinstance);

        $this->assertEquals($totpfactor::TOTP_FUTURE, $result);

        // Codes in far future are invalid.

        $code = $totp->at($clock->time() + (20 * MINSECS));

        $result = $totpfactor->validate_code($code, $window, $totp, $factorinstance);

        $this->assertEquals($totpfactor::TOTP_INVALID, $result);

        // Do the same for past codes.

        $window = 1;

        $code = $totp->at($clock->time() - (2 * MINSECS));

        $result = $totpfactor->validate_code($code, $window, $totp, $factorinstance);

        $this->assertEquals($totpfactor::TOTP_OLD, $result);

        // Codes in far future are invalid.

        $code = $totp->at($clock->time() - (20 * MINSECS));

        $result = $totpfactor->validate_code($code, $window, $totp, $factorinstance);

        $this->assertEquals($totpfactor::TOTP_INVALID, $result);

        // Check incorrect codes are invalid.

        // Note code has a 1 in 30,000,000 chance of failing.

        $code = '123456';

        $result = $totpfactor->validate_code($code, $window, $totp, $factorinstance);

        $this->assertEquals($totpfactor::TOTP_INVALID, $result);

    }

    /**

     * Do not store the TOTP secret + user combination more than once

     *

     * @covers ::setup_user_factor

     */

    public function test_wont_store_same_secret_twice(): void {

        global $DB;

        $this->resetAfterTest(true);

        $user = $this->getDataGenerator()->create_user();

        $this->setUser($user);

        set_config('enabled', 1, 'factor_totp');

        $totpfactor = \tool_mfa\plugininfo\factor::get_factor('totp');

        $totpdata = [

            'secret' => 'fakekey',

            'devicename' => 'fakedevice',

        ];

        $totpfactor->setup_user_factor((object) $totpdata);

        // Trying to add the same TOTP should return null.

        $anotherecord = $totpfactor->setup_user_factor((object) $totpdata);

        $this->assertNull($anotherecord);

        // The total count for factors added should be 1 at this point.

        $count = $DB->count_records('tool_mfa');

        $this->assertEquals(1, $count);

    }

}