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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Celemas\Boiler; |
| 6 | |
| 7 | use Celemas\Boiler\Exception\LookupException; |
| 8 | |
| 9 | /** @internal */ |
| 10 | final class Path |
| 11 | { |
| 12 | private bool $isValid = false; |
| 13 | private string $path = ''; |
| 14 | private string $error = ''; |
| 15 | |
| 16 | /** |
| 17 | * @param non-empty-string $dir |
| 18 | * @param non-empty-string $file |
| 19 | */ |
| 20 | public function __construct( |
| 21 | private string $dir, |
| 22 | string $file, |
| 23 | ) { |
| 24 | if (strlen(trim($dir)) === 0) { |
| 25 | $this->error = 'Template directory must not be an empty string'; |
| 26 | |
| 27 | return; |
| 28 | } |
| 29 | |
| 30 | $dir = realpath($this->dir); |
| 31 | |
| 32 | if ($dir === false) { |
| 33 | $this->error = "Template directory not found: '{$this->dir}'"; |
| 34 | |
| 35 | return; |
| 36 | } |
| 37 | |
| 38 | assert($dir !== '', 'Resolved template directory path must not be empty'); |
| 39 | |
| 40 | $this->dir = $dir; |
| 41 | $this->validateFile($dir, $file); |
| 42 | } |
| 43 | |
| 44 | /** @return non-empty-string */ |
| 45 | public function path(): string |
| 46 | { |
| 47 | if (!$this->isValid || $this->path === '') { |
| 48 | throw new LookupException("Error while accessing path of invalid template: `{$this->path}`"); |
| 49 | } |
| 50 | |
| 51 | return $this->path; |
| 52 | } |
| 53 | |
| 54 | public function error(): string |
| 55 | { |
| 56 | return $this->error; |
| 57 | } |
| 58 | |
| 59 | public function isValid(): bool |
| 60 | { |
| 61 | return $this->isValid; |
| 62 | } |
| 63 | |
| 64 | private function validateFile(string $dir, string $file): void |
| 65 | { |
| 66 | $fullPath = $dir . DIRECTORY_SEPARATOR . $file; |
| 67 | |
| 68 | if (str_ends_with($fullPath, '.php')) { |
| 69 | $this->validatePath($fullPath); |
| 70 | } else { |
| 71 | $this->validatePath("{$fullPath}.php"); |
| 72 | |
| 73 | if (!$this->isValid) { |
| 74 | $this->validatePath($fullPath); |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | if ($this->isValid && !$this->isWithinRoot($this->path)) { |
| 79 | $this->error = "Template resides outside of root directory ({$this->dir}): {$this->path}"; |
| 80 | $this->isValid = false; |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | /** @param non-empty-string $path */ |
| 85 | private function validatePath(string $path): void |
| 86 | { |
| 87 | $realpath = realpath($path); |
| 88 | |
| 89 | if ($realpath === false || strlen($realpath) === 0) { |
| 90 | $this->error = "Template not found: {$path}"; |
| 91 | |
| 92 | return; |
| 93 | } |
| 94 | |
| 95 | assert($realpath !== '', 'Resolved template file path must not be empty'); |
| 96 | |
| 97 | $this->isValid = true; |
| 98 | $this->path = $realpath; |
| 99 | $this->error = ''; |
| 100 | } |
| 101 | |
| 102 | private function isWithinRoot(string $path): bool |
| 103 | { |
| 104 | $root = rtrim($this->dir, DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR; |
| 105 | |
| 106 | if (DIRECTORY_SEPARATOR === '\\') { |
| 107 | // Windows-only branch |
| 108 | // @codeCoverageIgnoreStart |
| 109 | |
| 110 | return strncasecmp($path, $root, strlen($root)) === 0; |
| 111 | |
| 112 | // @codeCoverageIgnoreEnd |
| 113 | } |
| 114 | |
| 115 | return str_starts_with($path, $root); |
| 116 | } |
| 117 | } |