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📄 OAuth.php(29.62 KB)
📄 OAuthBody.php(5.41 KB)
📄 TrivialStore.php(4.87 KB)
📄 ajax.php(3.18 KB)
📁 amd
📄 auth.php(6.06 KB)
📁 backup
📄 certs.php(1.16 KB)
📁 classes
📄 contentitem.php(2.43 KB)
📄 contentitem_return.php(3.75 KB)
📁 db
📄 deprecatedlib.php(1.1 KB)
📄 edit_form.php(18.63 KB)
📄 externalregistrationreturn.php(2.31 KB)
📄 grade.php(1.36 KB)
📄 index.php(4.46 KB)
📄 instructor_edit_tool_type.php(3.89 KB)
📁 lang
📄 launch.php(3.84 KB)
📄 lib.php(25.61 KB)
📄 locallib.php(158.48 KB)
📄 mod_form.js(23.42 KB)
📄 mod_form.php(18.9 KB)
📄 openid-configuration.php(2.66 KB)
📄 openid-registration.php(3.46 KB)
📁 pix
📄 register.php(4.39 KB)
📄 register_form.php(4.33 KB)
📄 registersettings.php(3.18 KB)
📄 registration.php(1.4 KB)
📄 registrationreturn.php(3.47 KB)
📄 request_tool.php(2.57 KB)
📄 return.php(4.71 KB)
📁 service
📄 service.php(7.48 KB)
📄 servicelib.php(9.89 KB)
📄 services.php(3.01 KB)
📄 settings.php(8.03 KB)
📁 source
📄 startltiadvregistration.php(2.95 KB)
📄 styles.css(7.9 KB)
📁 templates
📁 tests
📄 token.php(3.42 KB)
📄 toolconfigure.php(2.09 KB)
📄 toolproxies.php(6.4 KB)
📄 toolssettings.php(3.83 KB)
📄 typessettings.php(5.75 KB)
📄 upgrade.txt(4.24 KB)
📄 upgradelib.php(2.08 KB)
📄 version.php(2.58 KB)
📄 view.php(8.25 KB)

Editing: upgradelib.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/>.

/**
 * This file contains functions used by upgrade and install.
 *
 * Because this is used during install it should not include additional files.
 *
 * @package   mod_lti
 * @copyright 2019 Damyon Wiese
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

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

/**
 * This function checks if a private key has been generated for this site.
 *
 * If the key does not exist it generates a new one. If the openssl
 * extension is not installed or configured properly it returns a warning message.
 *
 * @return string A warning message if a private key does not exist and cannot be generated.
 */
function mod_lti_verify_private_key() {
    $key = get_config('mod_lti', 'privatekey');

// If we already generated a valid key, no need to check.
    if (empty($key)) {

// Create the private key.
        $kid = bin2hex(openssl_random_pseudo_bytes(10));
        set_config('kid', $kid, 'mod_lti');
        $config = array(
            "digest_alg" => "sha256",
            "private_key_bits" => 2048,
            "private_key_type" => OPENSSL_KEYTYPE_RSA,
        );
        $res = openssl_pkey_new($config);
        openssl_pkey_export($res, $privatekey);

if (!empty($privatekey)) {
            set_config('privatekey', $privatekey, 'mod_lti');
        } else {
            return get_string('opensslconfiginvalid', 'mod_lti');
        }
    }

return '';
}

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