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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Celemas\Quma; |
| 6 | |
| 7 | use DateTimeImmutable; |
| 8 | use RuntimeException; |
| 9 | |
| 10 | /** |
| 11 | * @internal |
| 12 | * |
| 13 | * Coverage ignores mark defensive filesystem/global-state race branches that are |
| 14 | * not deterministic or meaningful to exercise in tests. |
| 15 | */ |
| 16 | final class Debug |
| 17 | { |
| 18 | public const string ENV_DEBUG = 'QUMA_DEBUG'; |
| 19 | public const string ENV_PRINT = 'QUMA_DEBUG_PRINT'; |
| 20 | public const string ENV_TRANSLATED = 'QUMA_DEBUG_TRANSLATED'; |
| 21 | public const string ENV_INTERPOLATED = 'QUMA_DEBUG_INTERPOLATED'; |
| 22 | |
| 23 | private static ?string $sessionKey = null; |
| 24 | private static ?string $session = null; |
| 25 | private static ?string $fallbackTime = null; |
| 26 | private static int $counter = 0; |
| 27 | |
| 28 | public static function query(Database $db, string $query, Args $args, ?string $sourcePath): void |
| 29 | { |
| 30 | $print = self::prints(); |
| 31 | $writeTranslated = self::writesTranslated(); |
| 32 | $writeInterpolated = self::writesInterpolated(); |
| 33 | |
| 34 | if (!$print && !$writeTranslated && !$writeInterpolated) { |
| 35 | return; |
| 36 | } |
| 37 | |
| 38 | $path = $writeTranslated || $writeInterpolated |
| 39 | ? self::sessionPath($sourcePath, $db->getSqlDirs()) |
| 40 | : null; |
| 41 | |
| 42 | if ($writeTranslated) { |
| 43 | self::writeEnv(self::ENV_TRANSLATED, $path, $query); |
| 44 | } |
| 45 | |
| 46 | if (!$print && !$writeInterpolated) { |
| 47 | return; |
| 48 | } |
| 49 | |
| 50 | $interpolated = self::interpolate($query, $args); |
| 51 | |
| 52 | if ($print) { |
| 53 | self::printQuery($interpolated); |
| 54 | } |
| 55 | |
| 56 | if ($writeInterpolated) { |
| 57 | self::writeEnv(self::ENV_INTERPOLATED, $path, $interpolated); |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | public static function interpolate(string $query, Args $args): string |
| 62 | { |
| 63 | $prep = self::prepareQuery($query); |
| 64 | |
| 65 | if ($args->type() === ArgType::Named) { |
| 66 | $interpolated = self::interpolateNamed($prep->query, $args->getNamed()); |
| 67 | } else { |
| 68 | $interpolated = self::interpolatePositional($prep->query, $args->get()); |
| 69 | } |
| 70 | |
| 71 | return self::restoreQuery($interpolated, $prep); |
| 72 | } |
| 73 | |
| 74 | public static function enabled(): bool |
| 75 | { |
| 76 | $value = self::env(self::ENV_DEBUG); |
| 77 | |
| 78 | return $value !== null && self::flag($value); |
| 79 | } |
| 80 | |
| 81 | public static function prints(): bool |
| 82 | { |
| 83 | $value = self::env(self::ENV_PRINT); |
| 84 | |
| 85 | return $value !== null && self::flag($value); |
| 86 | } |
| 87 | |
| 88 | public static function writesTranslated(): bool |
| 89 | { |
| 90 | return self::env(self::ENV_TRANSLATED) !== null; |
| 91 | } |
| 92 | |
| 93 | public static function writesInterpolated(): bool |
| 94 | { |
| 95 | return self::env(self::ENV_INTERPOLATED) !== null; |
| 96 | } |
| 97 | |
| 98 | private static function printQuery(string $query): void |
| 99 | { |
| 100 | $msg = |
| 101 | "\n\n-----------------------------------------------\n\n" |
| 102 | . $query |
| 103 | . "\n------------------------------------------------\n"; |
| 104 | |
| 105 | if (($_SERVER['SERVER_SOFTWARE'] ?? null) !== null) { |
| 106 | // @codeCoverageIgnoreStart |
| 107 | error_log($msg); |
| 108 | |
| 109 | // @codeCoverageIgnoreEnd |
| 110 | } else { |
| 111 | echo $msg; |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | private static function value(mixed $value): string |
| 116 | { |
| 117 | if (is_string($value)) { |
| 118 | return "'" . $value . "'"; |
| 119 | } |
| 120 | |
| 121 | if (is_array($value)) { |
| 122 | $encoded = json_encode($value); |
| 123 | |
| 124 | return "'" . ($encoded !== false ? $encoded : '[]') . "'"; |
| 125 | } |
| 126 | |
| 127 | if (is_null($value)) { |
| 128 | return 'NULL'; |
| 129 | } |
| 130 | |
| 131 | if (is_bool($value)) { |
| 132 | return $value ? 'true' : 'false'; |
| 133 | } |
| 134 | |
| 135 | return (string) $value; |
| 136 | } |
| 137 | |
| 138 | private static function prepareQuery(string $query): PreparedQuery |
| 139 | { |
| 140 | $patterns = [ |
| 141 | Query::PATTERN_BLOCK, |
| 142 | Query::PATTERN_STRING, |
| 143 | Query::PATTERN_COMMENT_MULTI, |
| 144 | Query::PATTERN_COMMENT_SINGLE, |
| 145 | ]; |
| 146 | |
| 147 | $swaps = []; |
| 148 | $i = 0; |
| 149 | |
| 150 | do { |
| 151 | $found = false; |
| 152 | |
| 153 | foreach ($patterns as $pattern) { |
| 154 | $matches = []; |
| 155 | |
| 156 | if (preg_match($pattern, $query, $matches) === 1) { |
| 157 | $match = $matches[0]; |
| 158 | $replacement = "___CHUCK_REPLACE_{$i}___"; |
| 159 | assert($match !== '', 'Query placeholder match must not be empty.'); |
| 160 | $swaps[$replacement] = $match; |
| 161 | |
| 162 | $query = preg_replace($pattern, $replacement, $query, limit: 1) ?? $query; |
| 163 | $found = true; |
| 164 | $i++; |
| 165 | |
| 166 | break; |
| 167 | } |
| 168 | } |
| 169 | } while ($found); |
| 170 | |
| 171 | return new PreparedQuery($query, $swaps); |
| 172 | } |
| 173 | |
| 174 | private static function restoreQuery(string $query, PreparedQuery $prep): string |
| 175 | { |
| 176 | foreach ($prep->swaps as $swap => $replacement) { |
| 177 | $query = str_replace($swap, $replacement, $query); |
| 178 | } |
| 179 | |
| 180 | return $query; |
| 181 | } |
| 182 | |
| 183 | /** @param array<array-key, mixed> $args */ |
| 184 | private static function interpolateNamed(string $query, array $args): string |
| 185 | { |
| 186 | $map = []; |
| 187 | |
| 188 | array_walk( |
| 189 | $args, |
| 190 | static function (mixed $value, int|string $key) use (&$map): void { |
| 191 | if (is_string($key) && $key !== '') { |
| 192 | $map[':' . $key] = self::value($value); |
| 193 | } |
| 194 | }, |
| 195 | ); |
| 196 | |
| 197 | return strtr($query, $map); |
| 198 | } |
| 199 | |
| 200 | /** @param array<array-key, mixed> $args */ |
| 201 | private static function interpolatePositional(string $query, array $args): string |
| 202 | { |
| 203 | $result = $query; |
| 204 | |
| 205 | array_walk( |
| 206 | $args, |
| 207 | static function (mixed $value) use (&$result): void { |
| 208 | $replaced = preg_replace('/\\?/', self::value($value), $result, 1); |
| 209 | $result = $replaced ?? $result; |
| 210 | }, |
| 211 | ); |
| 212 | |
| 213 | return $result; |
| 214 | } |
| 215 | |
| 216 | private static function flag(string $value): bool |
| 217 | { |
| 218 | return match (strtolower($value)) { |
| 219 | '1', 'true', 'yes', 'on' => true, |
| 220 | default => false, |
| 221 | }; |
| 222 | } |
| 223 | |
| 224 | private static function env(string $name): ?string |
| 225 | { |
| 226 | $value = getenv($name); |
| 227 | |
| 228 | if ($value === false) { |
| 229 | $value = $_SERVER[$name] ?? $_ENV[$name] ?? null; |
| 230 | } |
| 231 | |
| 232 | if (!is_string($value)) { |
| 233 | return null; |
| 234 | } |
| 235 | |
| 236 | $value = trim($value); |
| 237 | |
| 238 | return $value === '' ? null : $value; |
| 239 | } |
| 240 | |
| 241 | /** @return non-empty-string|null */ |
| 242 | private static function dir(string $name): ?string |
| 243 | { |
| 244 | $dir = self::env($name); |
| 245 | |
| 246 | if ($dir === null) { |
| 247 | return null; // @codeCoverageIgnore |
| 248 | } |
| 249 | |
| 250 | if (!is_dir($dir)) { |
| 251 | throw new RuntimeException("Quma debug directory does not exist for {$name}: {$dir}"); |
| 252 | } |
| 253 | |
| 254 | if (!is_writable($dir)) { |
| 255 | throw new RuntimeException("Quma debug directory is not writable for {$name}: {$dir}"); // @codeCoverageIgnore |
| 256 | } |
| 257 | |
| 258 | $path = realpath($dir); |
| 259 | |
| 260 | if ($path === false || $path === '') { |
| 261 | throw new RuntimeException("Quma debug directory does not exist for {$name}: {$dir}"); // @codeCoverageIgnore |
| 262 | } |
| 263 | |
| 264 | return $path; |
| 265 | } |
| 266 | |
| 267 | private static function writeEnv(string $name, ?string $relative, string $source): void |
| 268 | { |
| 269 | if ($relative === null) { |
| 270 | return; // @codeCoverageIgnore |
| 271 | } |
| 272 | |
| 273 | $dir = self::dir($name); |
| 274 | |
| 275 | if ($dir === null) { |
| 276 | return; // @codeCoverageIgnore |
| 277 | } |
| 278 | |
| 279 | self::write($dir, $relative, $source); |
| 280 | } |
| 281 | |
| 282 | private static function write( |
| 283 | string $dir, |
| 284 | string $relative, |
| 285 | string $source, |
| 286 | ): void { |
| 287 | $path = $dir . DIRECTORY_SEPARATOR . self::safeRelativePath($relative); |
| 288 | $targetDir = dirname($path); |
| 289 | |
| 290 | if (!is_dir($targetDir) && !mkdir($targetDir, 0o775, true) && !is_dir($targetDir)) { |
| 291 | throw new RuntimeException('Could not create Quma debug directory: ' . $targetDir); // @codeCoverageIgnore |
| 292 | } |
| 293 | |
| 294 | if (file_put_contents($path, $source, LOCK_EX) === false) { |
| 295 | throw new RuntimeException('Could not write Quma debug file: ' . $path); // @codeCoverageIgnore |
| 296 | } |
| 297 | } |
| 298 | |
| 299 | /** @param array<array-key, mixed> $roots */ |
| 300 | private static function relativeToRoots(string $sourcePath, array $roots): string |
| 301 | { |
| 302 | $realSource = realpath($sourcePath); |
| 303 | $source = $realSource !== false ? $realSource : $sourcePath; |
| 304 | |
| 305 | foreach ($roots as $root) { |
| 306 | if (!is_string($root) || $root === '') { |
| 307 | continue; // @codeCoverageIgnore |
| 308 | } |
| 309 | |
| 310 | $realRoot = realpath($root); |
| 311 | $root = $realRoot !== false ? $realRoot : $root; |
| 312 | $prefix = rtrim($root, DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR; |
| 313 | |
| 314 | if (str_starts_with($source, $prefix)) { |
| 315 | $relative = substr($source, strlen($prefix)); |
| 316 | |
| 317 | return $relative === '' ? basename($sourcePath) : $relative; |
| 318 | } |
| 319 | } |
| 320 | |
| 321 | return basename($sourcePath); // @codeCoverageIgnore |
| 322 | } |
| 323 | |
| 324 | /** @param array<array-key, mixed> $roots */ |
| 325 | private static function sessionPath(?string $sourcePath, array $roots): string |
| 326 | { |
| 327 | return self::session() |
| 328 | . DIRECTORY_SEPARATOR |
| 329 | . self::counter() |
| 330 | . '--' |
| 331 | . self::sourceName($sourcePath, $roots); |
| 332 | } |
| 333 | |
| 334 | /** @param array<array-key, mixed> $roots */ |
| 335 | private static function sourceName(?string $sourcePath, array $roots): string |
| 336 | { |
| 337 | if ($sourcePath === null) { |
| 338 | return 'execute.sql'; |
| 339 | } |
| 340 | |
| 341 | $relative = self::relativeToRoots($sourcePath, $roots); |
| 342 | $dir = dirname($relative); |
| 343 | $name = pathinfo($relative, PATHINFO_FILENAME); |
| 344 | $name = $name !== '' ? $name : 'query'; |
| 345 | $path = ($dir === '.' ? '' : $dir . DIRECTORY_SEPARATOR) . $name . '.sql'; |
| 346 | |
| 347 | return preg_replace('/[\\/]+/', '--', $path) ?? 'query.sql'; |
| 348 | } |
| 349 | |
| 350 | private static function session(): string |
| 351 | { |
| 352 | [$key, $session] = self::sessionInfo(); |
| 353 | |
| 354 | if (self::$sessionKey !== $key) { |
| 355 | self::$sessionKey = $key; |
| 356 | self::$session = $session; |
| 357 | self::$counter = 0; |
| 358 | } |
| 359 | |
| 360 | return self::$session ?? $session; |
| 361 | } |
| 362 | |
| 363 | /** @return array{0: string, 1: string} */ |
| 364 | private static function sessionInfo(): array |
| 365 | { |
| 366 | $explicit = self::env('QUMA_DEBUG_SESSION'); |
| 367 | |
| 368 | if ($explicit !== null) { |
| 369 | return ['env:' . $explicit, self::sessionLabel($explicit)]; |
| 370 | } |
| 371 | |
| 372 | $method = self::server('REQUEST_METHOD'); |
| 373 | $requestUri = self::server('REQUEST_URI'); |
| 374 | |
| 375 | if ($method !== null || $requestUri !== null) { |
| 376 | $method = strtoupper($method ?? 'HTTP'); |
| 377 | $uri = $requestUri ?? self::server('SCRIPT_NAME') ?? self::server('PHP_SELF') ?? '/'; |
| 378 | $time = self::requestTime(); |
| 379 | $label = self::uriLabel($uri); |
| 380 | $hash = self::hash([$time, $method, $uri, (string) getmypid()]); |
| 381 | |
| 382 | return ["http:{$time}:{$method}:{$uri}", "{$time}--{$method}--{$label}--{$hash}"]; |
| 383 | } |
| 384 | |
| 385 | $time = self::requestTime(); |
| 386 | $hash = self::hash([$time, (string) getmypid(), self::argv()]); |
| 387 | |
| 388 | return ["cli:{$time}", "{$time}--cli--{$hash}"]; |
| 389 | } |
| 390 | |
| 391 | private static function requestTime(): string |
| 392 | { |
| 393 | $time = self::server('REQUEST_TIME_FLOAT'); |
| 394 | |
| 395 | if ($time !== null && is_numeric($time)) { |
| 396 | $date = DateTimeImmutable::createFromFormat('U.u', sprintf('%.6F', (float) $time)); |
| 397 | |
| 398 | if ($date instanceof DateTimeImmutable) { |
| 399 | return $date->format('Ymd-His-u'); |
| 400 | } |
| 401 | } |
| 402 | |
| 403 | $time = self::server('REQUEST_TIME'); |
| 404 | |
| 405 | if ($time !== null && ctype_digit($time)) { |
| 406 | return new DateTimeImmutable('@' . $time)->format('Ymd-His') . '-000000'; |
| 407 | } |
| 408 | |
| 409 | return self::$fallbackTime ??= new DateTimeImmutable()->format('Ymd-His-u'); |
| 410 | } |
| 411 | |
| 412 | private static function argv(): string |
| 413 | { |
| 414 | return implode(' ', $_SERVER['argv'] ?? []); |
| 415 | } |
| 416 | |
| 417 | private static function sessionLabel(string $value): string |
| 418 | { |
| 419 | $label = self::safeSegment($value); |
| 420 | |
| 421 | return strlen($label) <= 96 ? $label : substr($label, 0, 96); |
| 422 | } |
| 423 | |
| 424 | private static function uriLabel(string $uri): string |
| 425 | { |
| 426 | $path = parse_url($uri, PHP_URL_PATH); |
| 427 | $path = is_string($path) && $path !== '' ? $path : '/'; |
| 428 | $label = trim($path, '/'); |
| 429 | |
| 430 | if ($label === '') { |
| 431 | return 'root'; |
| 432 | } |
| 433 | |
| 434 | $label = preg_replace('/[^A-Za-z0-9._:-]+/', '-', $label) ?? 'request'; |
| 435 | $label = trim($label, '-.'); |
| 436 | $label = $label !== '' ? $label : 'request'; |
| 437 | |
| 438 | return strlen($label) <= 64 ? $label : substr($label, 0, 64); |
| 439 | } |
| 440 | |
| 441 | /** @param list<string> $parts */ |
| 442 | private static function hash(array $parts): string |
| 443 | { |
| 444 | return substr(hash('xxh128', implode("\0", $parts)), 0, 8); |
| 445 | } |
| 446 | |
| 447 | private static function server(string $name): ?string |
| 448 | { |
| 449 | $value = $_SERVER[$name] ?? null; |
| 450 | |
| 451 | if (is_float($value) || is_int($value)) { |
| 452 | return (string) $value; |
| 453 | } |
| 454 | |
| 455 | return is_string($value) && $value !== '' ? $value : null; |
| 456 | } |
| 457 | |
| 458 | private static function counter(): string |
| 459 | { |
| 460 | self::$counter++; |
| 461 | |
| 462 | return str_pad((string) self::$counter, 4, '0', STR_PAD_LEFT); |
| 463 | } |
| 464 | |
| 465 | private static function safeRelativePath(string $path): string |
| 466 | { |
| 467 | $parts = preg_split('/[\\/]+/', $path, -1, PREG_SPLIT_NO_EMPTY); |
| 468 | |
| 469 | if (!is_array($parts) || count($parts) === 0) { |
| 470 | return 'query.sql'; // @codeCoverageIgnore |
| 471 | } |
| 472 | |
| 473 | $result = []; |
| 474 | |
| 475 | foreach ($parts as $part) { |
| 476 | if ($part === '.' || $part === '..') { |
| 477 | continue; // @codeCoverageIgnore |
| 478 | } |
| 479 | |
| 480 | $result[] = self::safeSegment($part); |
| 481 | } |
| 482 | |
| 483 | $path = implode(DIRECTORY_SEPARATOR, $result); |
| 484 | |
| 485 | return $path !== '' ? $path : 'query.sql'; |
| 486 | } |
| 487 | |
| 488 | private static function safeSegment(string $segment): string |
| 489 | { |
| 490 | $result = preg_replace('/[^A-Za-z0-9._:-]+/', '_', $segment); |
| 491 | $result = trim($result ?? '', '.'); |
| 492 | |
| 493 | return $result === '' ? '_' : $result; |
| 494 | } |
| 495 | } |