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event	[ DIR ]	drwxr-xr-x
external	[ DIR ]	drwxr-xr-x
fixtures	[ DIR ]	drwxr-xr-x
other	[ DIR ]	drwxr-xr-x
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performance	[ DIR ]	drwxr-xr-x
plugininfo	[ DIR ]	drwxr-xr-x
accesslib_has_capability_test....	29.73 KB	-rw-rw-r--
accesslib_test.php	219.29 KB	-rw-rw-r--
adhoc_task_test.php	18.44 KB	-rw-rw-r--
adminlib_test.php	4.38 KB	-rw-rw-r--
admintree_test.php	17.32 KB	-rw-r--r--
ajaxlib_test.php	4.36 KB	-rw-rw-r--
analysers_test.php	12.95 KB	-rw-r--r--
antivirus_test.php	8.69 KB	-rw-rw-r--
authlib_test.php	19.91 KB	-rw-r--r--
blocklib_test.php	35.27 KB	-rw-rw-r--
calendar_cron_task_test.php	2.69 KB	-rw-rw-r--
check_test.php	1.97 KB	-rw-r--r--
client_test.php	4.34 KB	-rw-r--r--
collator_test.php	11.99 KB	-rw-r--r--
completion_daily_task_test.php	5.24 KB	-rw-r--r--
completionlib_test.php	62.1 KB	-rw-rw-r--
component_test.php	40.17 KB	-rw-rw-r--
componentlib_test.php	6.64 KB	-rw-r--r--
configonlylib_test.php	6.15 KB	-rw-r--r--
content_test.php	4.77 KB	-rw-r--r--
core_media_player_native_test....	6.54 KB	-rw-r--r--
core_renderer_template_exploit...	17.28 KB	-rw-r--r--
coverage.php	1.93 KB	-rw-rw-r--
cronlib_test.php	6.89 KB	-rw-r--r--
csslib_test.php	1.79 KB	-rw-r--r--
csvclass_test.php	5.57 KB	-rw-r--r--
curl_security_helper_test.php	14.71 KB	-rw-r--r--
customcontext_test.php	3.79 KB	-rw-r--r--
dataformat_test.php	3.74 KB	-rw-r--r--
datalib_test.php	47.8 KB	-rw-r--r--
datalib_update_with_unique_ind...	6.31 KB	-rw-r--r--
date_legacy_test.php	13.9 KB	-rw-r--r--
date_test.php	24.48 KB	-rw-rw-r--
editorlib_test.php	2.01 KB	-rw-r--r--
encryption_test.php	8.68 KB	-rw-r--r--
environment_test.php	8.54 KB	-rw-r--r--
event_context_locked_test.php	4.11 KB	-rw-r--r--
event_course_module_instance_l...	2.7 KB	-rw-r--r--
event_course_module_viewed.php	3.33 KB	-rw-r--r--
event_deprecated_test.php	1.49 KB	-rw-r--r--
event_grade_deleted_test.php	3.25 KB	-rw-r--r--
event_profile_field_test.php	12.44 KB	-rw-r--r--
event_unknown_logged_test.php	1.92 KB	-rw-r--r--
event_user_graded_test.php	10.07 KB	-rw-r--r--
event_user_password_updated_te...	2.89 KB	-rw-r--r--
exporter_test.php	11.02 KB	-rw-r--r--
externallib_test.php	29.7 KB	-rw-r--r--
filelib_test.php	70.92 KB	-rw-rw-r--
filestorage_zip_archive_test.p...	2.75 KB	-rw-r--r--
filetypes_test.php	10.2 KB	-rw-r--r--
filter_manager_test.php	3.48 KB	-rw-r--r--
filterlib_test.php	36.72 KB	-rw-r--r--
formslib_test.php	39.6 KB	-rw-r--r--
gdlib_test.php	5.92 KB	-rw-r--r--
googlelib_test.php	1.54 KB	-rw-r--r--
gradelib_test.php	9.74 KB	-rw-r--r--
grades_externallib_test.php	24.66 KB	-rw-rw-r--
grading_externallib_test.php	26.27 KB	-rw-r--r--
grouplib_test.php	84.23 KB	-rw-rw-r--
h5p_clean_orphaned_records_tas...	3.12 KB	-rw-r--r--
h5p_get_content_types_task_tes...	2.69 KB	-rw-r--r--
html2text_test.php	7.58 KB	-rw-r--r--
html_writer_test.php	8.74 KB	-rw-rw-r--
htmlpurifier_test.php	22.67 KB	-rw-r--r--
ip_utils_test.php	14.27 KB	-rw-r--r--
jquery_test.php	1.76 KB	-rw-r--r--
ldaplib_test.php	17.72 KB	-rw-r--r--
licenselib_test.php	11.58 KB	-rw-r--r--
lock_config_test.php	3.39 KB	-rw-r--r--
lock_test.php	5.5 KB	-rw-r--r--
markdown_test.php	2.45 KB	-rw-r--r--
mathslib_test.php	11.12 KB	-rw-r--r--
medialib_test.php	20.19 KB	-rw-rw-r--
message_test.php	12.46 KB	-rw-rw-r--
messageinbound_test.php	5.89 KB	-rw-r--r--
messagelib_test.php	56.39 KB	-rw-rw-r--
minify_test.php	3.14 KB	-rw-r--r--
modinfolib_test.php	44.15 KB	-rw-rw-r--
moodle_page_test.php	29.58 KB	-rw-rw-r--
moodle_url_test.php	12.85 KB	-rw-r--r--
moodlelib_test.php	216.85 KB	-rw-rw-r--
mustache_template_finder_test....	7.4 KB	-rw-r--r--
mustache_template_source_loade...	18.06 KB	-rw-r--r--
myprofilelib_test.php	10.44 KB	-rw-r--r--
navigationlib_test.php	26.28 KB	-rw-rw-r--
notification_test.php	4.61 KB	-rw-r--r--
oauth2_test.php	17.57 KB	-rw-r--r--
output_mustache_helper_collect...	8.09 KB	-rw-r--r--
outputcomponents_test.php	29.67 KB	-rw-r--r--
outputfactories_test.php	6.8 KB	-rw-r--r--
outputrequirementslib_test.php	5.38 KB	-rw-r--r--
pdflib_test.php	1.51 KB	-rw-r--r--
persistent_test.php	19.95 KB	-rw-rw-r--
plugin_manager_test.php	27.39 KB	-rw-r--r--
portfoliolib_test.php	8.4 KB	-rw-r--r--
progress_display_test.php	3.75 KB	-rw-r--r--
progress_test.php	14.48 KB	-rw-r--r--
qrcode_test.php	1.88 KB	-rw-r--r--
questionlib_test.php	96.9 KB	-rw-rw-r--
regex_test.php	1.88 KB	-rw-r--r--
report_helper_test.php	3.68 KB	-rw-rw-r--
requirejs_test.php	3.73 KB	-rw-r--r--
rsslib_test.php	6.9 KB	-rw-r--r--
rtlcss_test.php	56.86 KB	-rw-r--r--
sample_questions.ser	141.76 KB	-rw-r--r--
sample_questions.xml	102.62 KB	-rw-r--r--
sample_questions_with_old_imag...	4.85 KB	-rw-r--r--
sample_questions_with_old_imag...	4.08 KB	-rw-r--r--
sample_questions_wrong.xml	102.57 KB	-rw-r--r--
scheduled_task_test.php	29.98 KB	-rw-rw-r--
scss_test.php	4.26 KB	-rw-r--r--
session_manager_test.php	33.96 KB	-rw-r--r--
session_redis_test.php	13.27 KB	-rw-r--r--
sessionlib_test.php	11.86 KB	-rw-r--r--
setuplib_test.php	19.63 KB	-rw-r--r--
statslib_test.php	26.75 KB	-rw-r--r--
string_manager_standard_test.p...	10.05 KB	-rw-rw-r--
tablelib_test.php	23.53 KB	-rw-r--r--
task_database_logger_test.php	20.15 KB	-rw-r--r--
task_logging_test.php	17.31 KB	-rw-r--r--
task_manager_test.php	11.2 KB	-rw-r--r--
task_running_test.php	6.58 KB	-rw-r--r--
text_test.php	21.09 KB	-rw-rw-r--
theme_config_test.php	9.81 KB	-rw-rw-r--
time_splittings_test.php	15.09 KB	-rw-r--r--
update_api_test.php	6.75 KB	-rw-r--r--
update_checker_test.php	10.86 KB	-rw-r--r--
update_code_manager_test.php	9.06 KB	-rw-r--r--
update_validator_test.php	18.44 KB	-rw-r--r--
upgrade_util_test.php	5.65 KB	-rw-r--r--
upgradelib_test.php	69.1 KB	-rw-rw-r--
user_menu_test.php	3.82 KB	-rw-rw-r--
user_test.php	32.36 KB	-rw-rw-r--
useragent_test.php	83.88 KB	-rw-rw-r--
weblib_format_text_test.php	12.11 KB	-rw-r--r--
weblib_test.php	35.1 KB	-rw-rw-r--
xhprof_test.php	3.32 KB	-rw-r--r--
xhtml_container_stack_test.php	4.16 KB	-rw-r--r--
xmlize_test.php	2.72 KB	-rw-r--r--

Code Editor : encryption_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/>.

/**
 * Test encryption.
 *
 * @package core
 * @copyright 2020 The Open University
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

namespace core;

/**
 * Test encryption.
 *
 * @package core
 * @copyright 2020 The Open University
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class encryption_test extends \basic_testcase {

/**
     * Clear junk created by tests.
     */
    protected function tearDown(): void {
        global $CFG;
        $keyfile = encryption::get_key_file(encryption::METHOD_OPENSSL);
        if (file_exists($keyfile)) {
            chmod($keyfile, 0700);
        }
        $keyfile = encryption::get_key_file(encryption::METHOD_SODIUM);
        if (file_exists($keyfile)) {
            chmod($keyfile, 0700);
        }
        remove_dir($CFG->dataroot . '/secret');
        unset($CFG->nokeygeneration);
    }

protected function setUp(): void {
        $this->tearDown();

require_once(__DIR__ . '/fixtures/testable_encryption.php');
    }

/**
     * Tests using Sodium need to check the extension is available.
     *
     * @param string $method Encryption method
     */
    protected function require_sodium(string $method) {
        if ($method == encryption::METHOD_SODIUM) {
            if (!encryption::is_sodium_installed()) {
                $this->markTestSkipped('Sodium not installed');
            }
        }
    }

/**
     * Many of the tests work with both encryption methods.
     *
     * @return array[] Array of method options for test
     */
    public function encryption_method_provider(): array {
        return ['Sodium' => [encryption::METHOD_SODIUM], 'OpenSSL' => [encryption::METHOD_OPENSSL]];
    }

/**
     * Tests the create_keys and get_key functions.
     *
     * @param string $method Encryption method
     * @dataProvider encryption_method_provider
     */
    public function test_create_key(string $method): void {
        $this->require_sodium($method);
        encryption::create_key($method);
        $key = testable_encryption::get_key($method);

// Conveniently, both encryption methods have the same key length.
        $this->assertEquals(32, strlen($key));

$this->expectExceptionMessage('Key already exists');
        encryption::create_key($method);
    }

/**
     * Tests encryption and decryption with empty strings.
     *
     * @throws \moodle_exception
     */
    public function test_encrypt_and_decrypt_empty(): void {
        $this->assertEquals('', encryption::encrypt(''));
        $this->assertEquals('', encryption::decrypt(''));
    }

/**
     * Tests encryption when the keys weren't created yet.
     *
     * @param string $method Encryption method
     * @dataProvider encryption_method_provider
     */
    public function test_encrypt_nokeys(string $method): void {
        global $CFG;
        $this->require_sodium($method);

// Prevent automatic generation of keys.
        $CFG->nokeygeneration = true;
        $this->expectExceptionMessage('Key not found');
        encryption::encrypt('frogs', $method);
    }

/**
     * Tests decryption when the data has a different encryption method
     */
    public function test_decrypt_wrongmethod(): void {
        $this->expectExceptionMessage('Data does not match a supported encryption method');
        encryption::decrypt('FAKE-CIPHER-METHOD:xx');
    }

/**
     * Tests decryption when not enough data is supplied to get the IV and some data.
     *
     * @dataProvider encryption_method_provider
     * @param string $method Encryption method
     */
    public function test_decrypt_tooshort(string $method): void {
        $this->require_sodium($method);

$this->expectExceptionMessage('Insufficient data');
        switch ($method) {
            case encryption::METHOD_OPENSSL:
                // It needs min 49 bytes (16 bytes IV + 32 bytes HMAC + 1 byte data).
                $justtooshort = '0123456789abcdef0123456789abcdef0123456789abcdef';
                break;
            case encryption::METHOD_SODIUM:
                // Sodium needs 25 bytes at least as far as our code is concerned (24 bytes IV + 1
                // byte data); it splits out any authentication hashes itself.
                $justtooshort = '0123456789abcdef01234567';
                break;
        }

encryption::decrypt($method . ':' .base64_encode($justtooshort));
    }

/**
     * Tests decryption when data is not valid base64.
     *
     * @dataProvider encryption_method_provider
     * @param string $method Encryption method
     */
    public function test_decrypt_notbase64(string $method): void {
        $this->require_sodium($method);

$this->expectExceptionMessage('Invalid base64 data');
        encryption::decrypt($method . ':' . chr(160));
    }

/**
     * Tests decryption when the keys weren't created yet.
     *
     * @dataProvider encryption_method_provider
     * @param string $method Encryption method
     */
    public function test_decrypt_nokeys(string $method): void {
        global $CFG;
        $this->require_sodium($method);

// Prevent automatic generation of keys.
        $CFG->nokeygeneration = true;
        $this->expectExceptionMessage('Key not found');
        encryption::decrypt($method . ':' . base64_encode(
                '0123456789abcdef0123456789abcdef0123456789abcdef0'));
    }

/**
     * Test automatic generation of keys when needed.
     *
     * @dataProvider encryption_method_provider
     * @param string $method Encryption method
     */
    public function test_auto_key_generation(string $method): void {
        $this->require_sodium($method);

// Allow automatic generation (default).
        $encrypted = encryption::encrypt('frogs', $method);
        $this->assertEquals('frogs', encryption::decrypt($encrypted));
    }

/**
     * Checks that invalid key causes failures.
     *
     * @dataProvider encryption_method_provider
     * @param string $method Encryption method
     */
    public function test_invalid_key(string $method): void {
        global $CFG;
        $this->require_sodium($method);

// Set the key to something bogus.
        $folder = $CFG->dataroot . '/secret/key';
        check_dir_exists($folder);
        file_put_contents(encryption::get_key_file($method), 'silly');

switch ($method) {
            case encryption::METHOD_SODIUM:
                $this->expectExceptionMessageMatches('/(should|must) be SODIUM_CRYPTO_SECRETBOX_KEYBYTES bytes/');
                break;

case encryption::METHOD_OPENSSL:
                $this->expectExceptionMessage('Invalid key');
                break;
        }
        encryption::encrypt('frogs', $method);
    }

/**
     * Checks that modified data causes failures.
     *
     * @dataProvider encryption_method_provider
     * @param string $method Encryption method
     */
    public function test_modified_data(string $method): void {
        $this->require_sodium($method);

$encrypted = encryption::encrypt('frogs', $method);
        $mainbit = base64_decode(substr($encrypted, strlen($method) + 1));
        $mainbit = substr($mainbit, 0, 16) . 'X' . substr($mainbit, 16);
        $encrypted = $method . ':' . base64_encode($mainbit);
        $this->expectExceptionMessage('Integrity check failed');
        encryption::decrypt($encrypted);
    }

/**
     * Tests encryption and decryption for real.
     *
     * @dataProvider encryption_method_provider
     * @param string $method Encryption method
     * @throws \moodle_exception
     */
    public function test_encrypt_and_decrypt_realdata(string $method): void {
        $this->require_sodium($method);

// Encrypt short string.
        $encrypted = encryption::encrypt('frogs', $method);
        $this->assertNotEquals('frogs', $encrypted);
        $this->assertEquals('frogs', encryption::decrypt($encrypted));

// Encrypt really long string (1 MB).
        $long = str_repeat('X', 1024 * 1024);
        $this->assertEquals($long, encryption::decrypt(encryption::encrypt($long, $method)));
    }
}

${this.title}

Code Editor : encryption_test.php