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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | /** @license For full copyright and license information, please see the LICENSE.md file. */ |
| 6 | |
| 7 | namespace App\Core\Updater\Service; |
| 8 | |
| 9 | defined('AMMONLY_APP') || exit('Direct script access is forbidden.'); |
| 10 | |
| 11 | use App\Core\Updater\Dto\UpdateManifestDto; |
| 12 | use App\Core\Updater\Exception\UpdaterException; |
| 13 | use App\Core\Updater\Security\ZipSecurityGuard; |
| 14 | use Yiisoft\Files\FileHelper; |
| 15 | use ZipArchive; |
| 16 | |
| 17 | /** |
| 18 | * Service managing pre-update file backups and rollback execution upon update failure. |
| 19 | * |
| 20 | * @package App\Core\Updater\Service |
| 21 | */ |
| 22 | final class RollbackService |
| 23 | { |
| 24 | /** |
| 25 | * RollbackService constructor. |
| 26 | * |
| 27 | * @param string $projectRoot Absolute path to application root. |
| 28 | * @param ZipSecurityGuard $securityGuard Path security guard. |
| 29 | */ |
| 30 | public function __construct( |
| 31 | private readonly string $projectRoot, |
| 32 | private readonly ZipSecurityGuard $securityGuard = new ZipSecurityGuard() |
| 33 | ) { |
| 34 | } |
| 35 | |
| 36 | /** |
| 37 | * Creates a rollback backup ZIP archive containing all files targeted for modification or deletion. |
| 38 | * |
| 39 | * @param UpdateManifestDto $manifest Manifest describing update changes. |
| 40 | * @param string $backupDir Directory where backup ZIP will be saved. |
| 41 | * @return string Path to the generated backup ZIP file. |
| 42 | * @throws UpdaterException If backup archive cannot be written. |
| 43 | */ |
| 44 | public function createPreUpdateBackup(UpdateManifestDto $manifest, string $backupDir): string |
| 45 | { |
| 46 | FileHelper::ensureDirectory($backupDir); |
| 47 | |
| 48 | $backupFileName = sprintf('pre_update_backup_%s_%s.zip', $manifest->version, date('YmdHis')); |
| 49 | $backupPath = rtrim($backupDir, '/\\') . '/' . $backupFileName; |
| 50 | |
| 51 | $zip = new ZipArchive(); |
| 52 | if ($zip->open($backupPath, ZipArchive::CREATE | ZipArchive::OVERWRITE) !== true) { |
| 53 | throw new UpdaterException(sprintf('Failed to create rollback backup archive at: %s', $backupPath)); |
| 54 | } |
| 55 | |
| 56 | $filesToBackup = []; |
| 57 | foreach ($manifest->filesAddOrUpdate as $item) { |
| 58 | $filesToBackup[] = $item['target_path']; |
| 59 | } |
| 60 | foreach ($manifest->filesDelete as $delPath) { |
| 61 | $filesToBackup[] = $delPath; |
| 62 | } |
| 63 | |
| 64 | $uniqueFiles = array_unique($filesToBackup); |
| 65 | $backedUpCount = 0; |
| 66 | |
| 67 | foreach ($uniqueFiles as $relPath) { |
| 68 | $absPath = $this->securityGuard->assertSafePath($this->projectRoot, $relPath); |
| 69 | if (file_exists($absPath) && is_file($absPath)) { |
| 70 | $zip->addFile($absPath, str_replace('\\', '/', $relPath)); |
| 71 | $backedUpCount++; |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | // Embed metadata about new files (to delete during rollback) |
| 76 | $metaData = [ |
| 77 | 'version' => $manifest->version, |
| 78 | 'created_at' => date('c'), |
| 79 | 'backed_up_count' => $backedUpCount, |
| 80 | 'files_to_remove_on_rollback' => $this->identifyNewFiles($manifest), |
| 81 | ]; |
| 82 | |
| 83 | $zip->addFromString('rollback_manifest.json', (string) json_encode($metaData, JSON_PRETTY_PRINT)); |
| 84 | $zip->close(); |
| 85 | |
| 86 | return $backupPath; |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | * Restores files from backup archive and cleans up newly introduced files. |
| 91 | * |
| 92 | * @param string $backupPath Path to the pre-update backup ZIP. |
| 93 | * @throws UpdaterException If archive cannot be opened or read. |
| 94 | */ |
| 95 | public function restoreFromBackup(string $backupPath): void |
| 96 | { |
| 97 | if (!file_exists($backupPath) || !is_readable($backupPath)) { |
| 98 | throw new UpdaterException(sprintf('Rollback backup archive not found: %s', $backupPath)); |
| 99 | } |
| 100 | |
| 101 | $zip = new ZipArchive(); |
| 102 | if ($zip->open($backupPath, ZipArchive::RDONLY) !== true) { |
| 103 | throw new UpdaterException(sprintf('Failed to open rollback archive: %s', $backupPath)); |
| 104 | } |
| 105 | |
| 106 | $newFilesToRemove = []; |
| 107 | $metaJson = $zip->getFromName('rollback_manifest.json'); |
| 108 | if (is_string($metaJson) && trim($metaJson) !== '') { |
| 109 | /** @var array{files_to_remove_on_rollback?: list<string>} $decoded */ |
| 110 | $decoded = json_decode($metaJson, true); |
| 111 | $newFilesToRemove = $decoded['files_to_remove_on_rollback'] ?? []; |
| 112 | } |
| 113 | |
| 114 | // Restore backed up files |
| 115 | $numFiles = $zip->numFiles; |
| 116 | for ($i = 0; $i < $numFiles; $i++) { |
| 117 | $entry = $zip->statIndex($i); |
| 118 | if ($entry === false || $entry['name'] === 'rollback_manifest.json') { |
| 119 | continue; |
| 120 | } |
| 121 | |
| 122 | $entryName = $entry['name']; |
| 123 | $destPath = $this->securityGuard->assertSafePath($this->projectRoot, $entryName); |
| 124 | |
| 125 | FileHelper::ensureDirectory(dirname($destPath)); |
| 126 | file_put_contents($destPath, (string) $zip->getFromIndex($i)); |
| 127 | } |
| 128 | |
| 129 | $zip->close(); |
| 130 | |
| 131 | // Delete newly created files that did not exist before update |
| 132 | foreach ($newFilesToRemove as $newFile) { |
| 133 | $absPath = $this->securityGuard->assertSafePath($this->projectRoot, $newFile); |
| 134 | if (file_exists($absPath) && is_file($absPath)) { |
| 135 | FileHelper::unlink($absPath); |
| 136 | } |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | /** |
| 141 | * Identifies which files from manifest did not exist in project root prior to update. |
| 142 | * |
| 143 | * @return list<string> |
| 144 | */ |
| 145 | private function identifyNewFiles(UpdateManifestDto $manifest): array |
| 146 | { |
| 147 | $newFiles = []; |
| 148 | foreach ($manifest->filesAddOrUpdate as $item) { |
| 149 | $relPath = $item['target_path']; |
| 150 | $absPath = $this->securityGuard->assertSafePath($this->projectRoot, $relPath); |
| 151 | if (!file_exists($absPath)) { |
| 152 | $newFiles[] = $relPath; |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | return $newFiles; |
| 157 | } |
| 158 | } |