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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * The main Logging class. |
| 5 | * |
| 6 | * This Source Code Form is subject to the terms of the Mozilla Public License, |
| 7 | * v. 2.0. If a copy of the MPL was not distributed with this file, You can |
| 8 | * obtain one at https://mozilla.org/MPL/2.0/. |
| 9 | * |
| 10 | * @package phpMyFAQ |
| 11 | * @author Thorsten Rinne <thorsten@phpmyfaq.de> |
| 12 | * @copyright 2006-2026 phpMyFAQ Team |
| 13 | * @license https://www.mozilla.org/MPL/2.0/ Mozilla Public License Version 2.0 |
| 14 | * @link https://www.phpmyfaq.de |
| 15 | * @since 2006-08-15 |
| 16 | */ |
| 17 | |
| 18 | declare(strict_types=1); |
| 19 | |
| 20 | namespace phpMyFAQ\Administration; |
| 21 | |
| 22 | use phpMyFAQ\Configuration; |
| 23 | use phpMyFAQ\Entity\AdminLog as AdminLogEntity; |
| 24 | use phpMyFAQ\User; |
| 25 | use Symfony\Component\HttpFoundation\Request; |
| 26 | |
| 27 | /** |
| 28 | * Class Logging |
| 29 | * |
| 30 | * @package phpMyFAQ |
| 31 | */ |
| 32 | readonly class AdminLog |
| 33 | { |
| 34 | private AdminLogRepository $adminLogRepository; |
| 35 | |
| 36 | /** |
| 37 | * Constructor. |
| 38 | */ |
| 39 | public function __construct( |
| 40 | private Configuration $configuration, |
| 41 | ) { |
| 42 | $this->adminLogRepository = new AdminLogRepository($this->configuration); |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * Returns the number of entries. |
| 47 | */ |
| 48 | public function getNumberOfEntries(): int |
| 49 | { |
| 50 | return $this->adminLogRepository->getNumberOfEntries(); |
| 51 | } |
| 52 | |
| 53 | /** |
| 54 | * Returns all data from the admin log. |
| 55 | * @return AdminLogEntity[] |
| 56 | */ |
| 57 | public function getAll(): array |
| 58 | { |
| 59 | return $this->adminLogRepository->getAll(); |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * Adds a new admin log entry. |
| 64 | * |
| 65 | * @param User $user User object |
| 66 | * @param string $logText Logged string |
| 67 | */ |
| 68 | public function log(User $user, string $logText = ''): bool |
| 69 | { |
| 70 | if (!$this->configuration->get(item: 'main.enableAdminLog')) { |
| 71 | return false; |
| 72 | } |
| 73 | |
| 74 | $request = Request::createFromGlobals(); |
| 75 | |
| 76 | // Get the hash of the last log entry for chaining |
| 77 | $previousHash = $this->adminLogRepository->getLastHash(); |
| 78 | |
| 79 | return $this->adminLogRepository->add($user, $logText, $request, $previousHash); |
| 80 | } |
| 81 | |
| 82 | /** |
| 83 | * Deletes logging data older than 30 days. |
| 84 | */ |
| 85 | public function delete(): bool |
| 86 | { |
| 87 | $timestamp = (int) Request::createFromGlobals()->server->get(key: 'REQUEST_TIME') - (30 * 86_400); |
| 88 | return $this->adminLogRepository->deleteOlderThan($timestamp); |
| 89 | } |
| 90 | |
| 91 | /** |
| 92 | * Verifies the integrity of the entire admin log chain. |
| 93 | * @return array{valid: bool, errors: array<int, string>, total: int, verified: int} |
| 94 | */ |
| 95 | public function verifyChainIntegrity(): array |
| 96 | { |
| 97 | $logs = $this->getAll(); |
| 98 | $errors = []; |
| 99 | $verified = 0; |
| 100 | $total = count($logs); |
| 101 | |
| 102 | if ($total === 0) { |
| 103 | return [ |
| 104 | 'valid' => true, |
| 105 | 'errors' => [], |
| 106 | 'total' => 0, |
| 107 | 'verified' => 0, |
| 108 | ]; |
| 109 | } |
| 110 | |
| 111 | $previousHash = null; |
| 112 | |
| 113 | foreach ($logs as $log) { |
| 114 | // Verify the hash matches the stored hash |
| 115 | if (!$log->verifyIntegrity()) { |
| 116 | $errors[] = sprintf('Log ID %d: Hash verification failed - data has been tampered', $log->getId()); |
| 117 | continue; |
| 118 | } |
| 119 | |
| 120 | // Verify the chain (previous hash matches) |
| 121 | if ($previousHash !== null && $log->getPreviousHash() !== $previousHash) { |
| 122 | $errors[] = sprintf( |
| 123 | 'Log ID %d: Chain broken - previous hash mismatch (expected: %s, got: %s)', |
| 124 | $log->getId(), |
| 125 | substr(string: $previousHash, offset: 0, length: 8) . '...', |
| 126 | substr(string: $log->getPreviousHash() ?? 'NULL', offset: 0, length: 8) . '...', |
| 127 | ); |
| 128 | continue; |
| 129 | } |
| 130 | |
| 131 | // The first entry should have null previous hash |
| 132 | if ($previousHash === null && $log->getPreviousHash() !== null) { |
| 133 | $errors[] = sprintf('Log ID %d: First entry should have null previous hash', $log->getId()); |
| 134 | continue; |
| 135 | } |
| 136 | |
| 137 | $verified++; |
| 138 | $previousHash = $log->getHash(); |
| 139 | } |
| 140 | |
| 141 | return [ |
| 142 | 'valid' => $errors === [], |
| 143 | 'errors' => $errors, |
| 144 | 'total' => $total, |
| 145 | 'verified' => $verified, |
| 146 | ]; |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * Calculates hash for a single log entry (for migration or manual verification). |
| 151 | */ |
| 152 | public function calculateHash(AdminLogEntity $log): string |
| 153 | { |
| 154 | return $log->calculateHash(); |
| 155 | } |
| 156 | } |