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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace BO\Slim; |
| 6 | |
| 7 | use BO\Slim\Helper\ClientIp; |
| 8 | use Psr\Http\Message\RequestInterface; |
| 9 | use Psr\Http\Message\ResponseInterface; |
| 10 | use Psr\Http\Message\ServerRequestInterface; |
| 11 | use Psr\SimpleCache\CacheInterface; |
| 12 | |
| 13 | class LoggerService |
| 14 | { |
| 15 | private const array SENSITIVE_HEADERS = [ |
| 16 | 'authorization', |
| 17 | 'cookie', |
| 18 | 'x-api-key', |
| 19 | 'auth-key', |
| 20 | 'authkey', |
| 21 | 'captchatoken', |
| 22 | ]; |
| 23 | |
| 24 | private const array SENSITIVE_PARAMS = [ |
| 25 | 'authkey', |
| 26 | 'auth_key', |
| 27 | 'auth-key', |
| 28 | 'key', |
| 29 | 'captchatoken', |
| 30 | 'captcha-token', |
| 31 | ]; |
| 32 | |
| 33 | private const array IMPORTANT_HEADERS = [ |
| 34 | 'user-agent', |
| 35 | ]; |
| 36 | |
| 37 | private const string CACHE_KEY_PREFIX = 'logger.'; |
| 38 | private const string CACHE_REQUEST_COUNTER_KEY = self::CACHE_KEY_PREFIX . 'request'; |
| 39 | private const string CACHE_ERROR_REQUEST_COUNTER_KEY = self::CACHE_KEY_PREFIX . 'request_error'; |
| 40 | |
| 41 | public static ?CacheInterface $cache = null; |
| 42 | |
| 43 | /** @var callable|null fn(ServerRequestInterface $request, ?string $rawBody): array */ |
| 44 | public static $requestContextEnricher = null; |
| 45 | |
| 46 | /** @var callable|null fn(string $errorCode): mixed */ |
| 47 | public static $errorCodeResolver = null; |
| 48 | |
| 49 | public static int $maxRequests = 1000; |
| 50 | public static int $maxErrorRequests = 0; |
| 51 | public static int $responseLength = 1048576; |
| 52 | public static int $stackLines = 10; |
| 53 | public static int $cacheTtl = 60; |
| 54 | public static int $maxRetries = 3; |
| 55 | public static int $backoffMin = 100; |
| 56 | public static int $lockTimeout = 30; |
| 57 | |
| 58 | /** |
| 59 | * @param array<string, mixed> $config |
| 60 | */ |
| 61 | public static function configure(array $config): void |
| 62 | { |
| 63 | if (isset($config['maxRequests'])) { |
| 64 | self::$maxRequests = (int) $config['maxRequests']; |
| 65 | } |
| 66 | if (isset($config['maxErrorRequests'])) { |
| 67 | self::$maxErrorRequests = (int) $config['maxErrorRequests']; |
| 68 | } |
| 69 | if (isset($config['responseLength'])) { |
| 70 | self::$responseLength = (int) $config['responseLength']; |
| 71 | } |
| 72 | if (isset($config['stackLines'])) { |
| 73 | self::$stackLines = (int) $config['stackLines']; |
| 74 | } |
| 75 | if (isset($config['cacheTtl'])) { |
| 76 | self::$cacheTtl = (int) $config['cacheTtl']; |
| 77 | } |
| 78 | if (isset($config['maxRetries'])) { |
| 79 | self::$maxRetries = (int) $config['maxRetries']; |
| 80 | } |
| 81 | if (isset($config['backoffMin'])) { |
| 82 | self::$backoffMin = (int) $config['backoffMin']; |
| 83 | } |
| 84 | if (isset($config['lockTimeout'])) { |
| 85 | self::$lockTimeout = (int) $config['lockTimeout']; |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | private static function checkRateLimit(int $maxAllowed, string $counterKey): bool |
| 90 | { |
| 91 | if ($maxAllowed <= 0) { |
| 92 | return true; |
| 93 | } |
| 94 | |
| 95 | if (self::$cache === null) { |
| 96 | \App::$log->notice('Cache not available for rate limiting'); |
| 97 | return true; |
| 98 | } |
| 99 | |
| 100 | $attempt = 0; |
| 101 | $lockKey = $counterKey . '_lock'; |
| 102 | |
| 103 | while ($attempt < self::$maxRetries) { |
| 104 | try { |
| 105 | if (!self::$cache->has($lockKey)) { |
| 106 | if (self::$cache->set($lockKey, true, self::$lockTimeout)) { |
| 107 | try { |
| 108 | $data = self::$cache->get($counterKey); |
| 109 | if ($data === null) { |
| 110 | self::$cache->set($counterKey, [ |
| 111 | 'count' => 1, |
| 112 | 'timestamp' => time(), |
| 113 | ], self::$cacheTtl); |
| 114 | return true; |
| 115 | } |
| 116 | |
| 117 | if (!is_array($data) || !isset($data['count'])) { |
| 118 | self::$cache->delete($counterKey); |
| 119 | return true; |
| 120 | } |
| 121 | |
| 122 | $count = (int) $data['count']; |
| 123 | if ($count >= $maxAllowed) { |
| 124 | return false; |
| 125 | } |
| 126 | |
| 127 | $data['count'] = $count + 1; |
| 128 | self::$cache->set($counterKey, $data, self::$cacheTtl); |
| 129 | return true; |
| 130 | } finally { |
| 131 | self::$cache->delete($lockKey); |
| 132 | } |
| 133 | } |
| 134 | } |
| 135 | } catch (\Throwable $e) { |
| 136 | \App::$log->warning('Rate limiting error', ['exception' => $e->getMessage()]); |
| 137 | } |
| 138 | |
| 139 | $attempt++; |
| 140 | usleep(self::$backoffMin * 1000); |
| 141 | } |
| 142 | |
| 143 | return true; |
| 144 | } |
| 145 | |
| 146 | public static function logError( |
| 147 | \Throwable $exception, |
| 148 | ?RequestInterface $request = null, |
| 149 | ?ResponseInterface $response = null, |
| 150 | array $context = [] |
| 151 | ): void { |
| 152 | $data = [ |
| 153 | 'exception' => get_class($exception), |
| 154 | 'message' => $exception->getMessage(), |
| 155 | 'code' => $exception->getCode(), |
| 156 | 'file' => $exception->getFile(), |
| 157 | 'line' => $exception->getLine(), |
| 158 | 'trace' => array_slice(explode("\n", $exception->getTraceAsString()), 0, self::$stackLines), |
| 159 | ]; |
| 160 | |
| 161 | if ($request) { |
| 162 | $data['request'] = [ |
| 163 | 'method' => $request->getMethod(), |
| 164 | 'uri' => (string) $request->getUri(), |
| 165 | 'headers' => self::filterSensitiveHeaders($request->getHeaders()), |
| 166 | ]; |
| 167 | } |
| 168 | |
| 169 | if ($response) { |
| 170 | $data['response'] = [ |
| 171 | 'status' => $response->getStatusCode(), |
| 172 | 'headers' => self::filterSensitiveHeaders($response->getHeaders()), |
| 173 | ]; |
| 174 | } |
| 175 | |
| 176 | \App::$log->error($exception->getMessage(), array_merge($data, $context)); |
| 177 | } |
| 178 | |
| 179 | public static function logWarning(string $message, array $context = []): void |
| 180 | { |
| 181 | \App::$log->warning($message, $context); |
| 182 | } |
| 183 | |
| 184 | public static function logInfo(string $message, array $context = []): void |
| 185 | { |
| 186 | \App::$log->info($message, $context); |
| 187 | } |
| 188 | |
| 189 | /** |
| 190 | * @SuppressWarnings(PHPMD.NPathComplexity) |
| 191 | */ |
| 192 | public static function logRequest(ServerRequestInterface $request, ResponseInterface $response): void |
| 193 | { |
| 194 | $statusCode = $response->getStatusCode(); |
| 195 | $rateLimitKey = $statusCode >= 400 |
| 196 | ? self::CACHE_ERROR_REQUEST_COUNTER_KEY |
| 197 | : self::CACHE_REQUEST_COUNTER_KEY; |
| 198 | $rateLimitMax = $statusCode >= 400 |
| 199 | ? self::$maxErrorRequests |
| 200 | : self::$maxRequests; |
| 201 | |
| 202 | if (!self::checkRateLimit($rateLimitMax, $rateLimitKey)) { |
| 203 | return; |
| 204 | } |
| 205 | |
| 206 | $uri = $request->getUri(); |
| 207 | $path = preg_replace('#/+#', '/', $uri->getPath()) ?? $uri->getPath(); |
| 208 | $logPath = self::buildLogPath($path, $request->getQueryParams()); |
| 209 | |
| 210 | $data = [ |
| 211 | 'method' => $request->getMethod(), |
| 212 | 'path' => $logPath, |
| 213 | 'status' => $response->getStatusCode(), |
| 214 | 'ip' => ClientIp::getClientIp(), |
| 215 | 'headers' => self::filterSensitiveHeaders($request->getHeaders()), |
| 216 | ]; |
| 217 | |
| 218 | $bodyStream = $response->getBody(); |
| 219 | $rawBody = (string) $bodyStream; |
| 220 | if ($bodyStream->isSeekable()) { |
| 221 | $bodyStream->rewind(); |
| 222 | } |
| 223 | |
| 224 | if (self::$requestContextEnricher !== null) { |
| 225 | $processContext = (self::$requestContextEnricher)($request, $rawBody); |
| 226 | if (!empty($processContext)) { |
| 227 | $data = array_merge($data, $processContext); |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | $data = self::appendResponseErrors($data, $response->getStatusCode(), $rawBody); |
| 232 | |
| 233 | $level = $response->getStatusCode() >= 400 ? 'error' : 'info'; |
| 234 | \App::$log->$level('HTTP Request', $data); |
| 235 | } |
| 236 | |
| 237 | private static function buildLogPath(string $path, array $queryParams): string |
| 238 | { |
| 239 | $queryParts = []; |
| 240 | foreach ($queryParams as $key => $value) { |
| 241 | if (preg_match('#^/|//#', (string) $key)) { |
| 242 | continue; |
| 243 | } |
| 244 | if (!is_array($value) && preg_match('#^/|//#', (string) $value)) { |
| 245 | continue; |
| 246 | } |
| 247 | $queryParts[] = self::formatQueryParamForLog($key, $value); |
| 248 | } |
| 249 | |
| 250 | return $path . ($queryParts !== [] ? '?' . implode('&', $queryParts) : ''); |
| 251 | } |
| 252 | |
| 253 | /** |
| 254 | * @param (int|string) $key |
| 255 | * |
| 256 | */ |
| 257 | private static function formatQueryParamForLog(mixed $key, mixed $value): string |
| 258 | { |
| 259 | $encodedKey = urlencode((string) $key); |
| 260 | if (in_array(strtolower((string) $key), self::SENSITIVE_PARAMS, true)) { |
| 261 | return "$encodedKey=****"; |
| 262 | } |
| 263 | if (is_array($value)) { |
| 264 | $encoded = json_encode($value, JSON_UNESCAPED_UNICODE); |
| 265 | return $encodedKey . '=' . urlencode($encoded !== false ? $encoded : '[]'); |
| 266 | } |
| 267 | |
| 268 | return $encodedKey . '=' . urlencode((string) $value); |
| 269 | } |
| 270 | |
| 271 | /** |
| 272 | * @param array<string, mixed> $data |
| 273 | * @return array<string, mixed> |
| 274 | */ |
| 275 | private static function appendResponseErrors(array $data, int $statusCode, ?string $rawBody): array |
| 276 | { |
| 277 | if ($statusCode < 400 || $rawBody === null || $rawBody === '') { |
| 278 | return $data; |
| 279 | } |
| 280 | |
| 281 | $decodedBody = json_decode($rawBody, true); |
| 282 | if (json_last_error() !== JSON_ERROR_NONE || !isset($decodedBody['errors'])) { |
| 283 | return $data; |
| 284 | } |
| 285 | |
| 286 | $errorMessages = []; |
| 287 | foreach ($decodedBody['errors'] as $error) { |
| 288 | if (isset($error['errorCode']) && self::$errorCodeResolver !== null) { |
| 289 | $errorMessages[] = (self::$errorCodeResolver)((string) $error['errorCode']); |
| 290 | } else { |
| 291 | $errorMessages[] = $error; |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | $data['errors'] = $errorMessages; |
| 296 | |
| 297 | return $data; |
| 298 | } |
| 299 | |
| 300 | private static function filterSensitiveHeaders(array $headers): array |
| 301 | { |
| 302 | $filtered = []; |
| 303 | foreach ($headers as $name => $values) { |
| 304 | $lower = strtolower((string) $name); |
| 305 | if (in_array($lower, self::SENSITIVE_HEADERS, true)) { |
| 306 | $filtered[$name] = ['[REDACTED]']; |
| 307 | } elseif (in_array($lower, self::IMPORTANT_HEADERS, true)) { |
| 308 | $filtered[$name] = $values; |
| 309 | } |
| 310 | } |
| 311 | |
| 312 | return $filtered; |
| 313 | } |
| 314 | } |