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2 daniel-mar 1 
<?php
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/*
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 * OIDplus 2.0
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 * Copyright 2019 - 2021 Daniel Marschall, ViaThinkSoft
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 *     http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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// Before we do ANYTHING, check for dependencies! Do not include anything (except the GMP supplement) yet.
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define('INSIDE_OIDPLUS', true);
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require_once __DIR__ . '/functions.inc.php'; // Required for _L()
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if (version_compare(PHP_VERSION, '7.0.0') < 0) {
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        // Reasons why we currently require PHP 7.0:
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        // - Return values (e.g. "function foo(): array") (added 2020-04-06 at the database classes)
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        //   Note: By removing these return values (e.g. removing ": array"), you *might* be
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        //   able to run OIDplus with PHP lower than version 7.0 (not tested)
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        //
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        // Currently we do NOT require 7.1, because some (old-)stable distros are still using PHP 7.0
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        // (e.g. Debian 9 which has LTS support till May 2022).
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        // Therefore we commented out following features which would require PHP 7.1:
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        // - Nullable return values (e.g. "function foo(): ?array")
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        // - void return value (e.g. "function foo(): void")
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        // - private/protected/public consts
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        echo '<!DOCTYPE HTML>';
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        echo '<html><head><title>'._L('OIDplus error').'</title></head><body>';
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        echo '<h1>'._L('OIDplus error').'</h1>';
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        echo '<p>'._L('OIDplus requires at least PHP version %1! You are currently using version %2','7.0',PHP_VERSION).'</p>'."\n";
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        echo '</body></html>';
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        die();
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}
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include_once __DIR__ . '/gmp_supplement.inc.php';
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include_once __DIR__ . '/../3p/symfony-mbstring-polyfill/bootstrap.php';
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include_once __DIR__ . '/../3p/php-jwt/ExpiredException.php';
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include_once __DIR__ . '/../3p/php-jwt/BeforeValidException.php';
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include_once __DIR__ . '/../3p/php-jwt/SignatureInvalidException.php';
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include_once __DIR__ . '/../3p/php-jwt/JWT.php';
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include_once __DIR__ . '/../3p/php-jwt/JWK.php';
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include_once __DIR__ . '/simplexml_supplement.inc.php';
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require_once __DIR__ . '/oidplus_dependency.inc.php';
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$missing_dependencies = oidplus_get_missing_dependencies();
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if (count($missing_dependencies) >= 1) {
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        echo '<!DOCTYPE HTML>';
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        echo '<html><head><title>'._L('OIDplus error').'</title></head><body>';
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        echo '<h1>'._L('OIDplus error').'</h1>';
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        echo '<p>'._L('The following PHP extensions need to be installed in order to run OIDplus:').'</p>';
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        echo '<ul>';
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        foreach ($missing_dependencies as $dependency) {
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                echo '<li>'.$dependency.'<br><br></li>';
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        }
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        echo '</ul>';
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        echo '</body></html>';
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        die();
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}
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unset($missing_dependencies);
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// Now we can continue!
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if (PHP_SAPI != 'cli') {
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        // TODO: Plugins should be able to extend CSP
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        header('X-Content-Type-Options: nosniff');
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        header('X-XSS-Protection: 1; mode=block');
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        header("Content-Security-Policy: default-src 'self' blob: https://fonts.gstatic.com https://www.google.com/ https://www.gstatic.com/ https://cdnjs.cloudflare.com/; ".
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               "style-src 'self' 'unsafe-inline' https://cdnjs.cloudflare.com/; ".
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               "img-src blob: data: http: https:; ".
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               "script-src 'self' 'unsafe-inline' 'unsafe-eval' blob: https://www.google.com/ https://www.gstatic.com/ https://cdnjs.cloudflare.com/ https://polyfill.io/; ".
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               "frame-ancestors 'none'; ".
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               "object-src 'none'");
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        header('X-Frame-Options: SAMEORIGIN');
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        header('Referrer-Policy: no-referrer-when-downgrade');
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}
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require_once __DIR__ . '/../3p/0xbb/Sha3.php';
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require_once __DIR__ . '/oid_utils.inc.php';
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require_once __DIR__ . '/uuid_utils.inc.php';
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require_once __DIR__ . '/color_utils.inc.php';
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require_once __DIR__ . '/ipv4_functions.inc.php';
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require_once __DIR__ . '/ipv6_functions.inc.php';
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require_once __DIR__ . '/anti_xss.inc.php';
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include_once __DIR__ . '/../3p/vts_fileformats/VtsFileTypeDetect.class.php';
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// ---
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spl_autoload_register(function ($class_name) {
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        static $class_refs = null;
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        if (is_null($class_refs)) {
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                $valid_plugin_folders = array(
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                        'adminPages',
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                        'auth',
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                        'database',
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                        'design',
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                        'language',
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                        'logger',
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                        'objectTypes',
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                        'publicPages',
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                        'raPages',
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                        'sqlSlang'
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                );
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                $class_files = array();
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                foreach ($valid_plugin_folders as $folder) {
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                        $class_files = array_merge($class_files, glob(__DIR__ . '/../plugins/'.$folder.'/'.'*'.'/'.'*'.'.class.php'));
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                }
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                $class_files = array_merge($class_files, glob(__DIR__ . '/classes/'.'*'.'.class.php'));
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                $class_refs = array();
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                foreach ($class_files as $filename) {
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                        $cn = basename($filename, '.class.php');
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                        $cn = strtolower($cn);
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                        if (!isset($class_refs[$cn])) {
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                                $class_refs[$cn] = $filename;
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                        }
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                }
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        }
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        $class_name = strtolower($class_name);
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        if (isset($class_refs[$class_name])) {
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                require $class_refs[$class_name];
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                unset($class_refs[$class_name]); // this emulates a "require_once" and is faster
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        }
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});