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<?php declare(strict_types=1); /* * This file is part of the Monolog package. * * (c) Jordi Boggiano <j.boggiano@seld.be> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Monolog; final class Utils { const DEFAULT_JSON_FLAGS = JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE | JSON_PRESERVE_ZERO_FRACTION | JSON_INVALID_UTF8_SUBSTITUTE | JSON_PARTIAL_OUTPUT_ON_ERROR; public static function getClass(object $object): string { $class = \get_class($object); if (false === ($pos = \strpos($class, "@anonymous\0"))) { return $class; } if (false === ($parent = \get_parent_class($class))) { return \substr($class, 0, $pos + 10); } return $parent . '@anonymous'; } public static function substr(string $string, int $start, ?int $length = null): string { if (extension_loaded('mbstring')) { return mb_strcut($string, $start, $length); } return substr($string, $start, (null === $length) ? strlen($string) : $length); } /** * Makes sure if a relative path is passed in it is turned into an absolute path * * @param string $streamUrl stream URL or path without protocol */ public static function canonicalizePath(string $streamUrl): string { $prefix = ''; if ('file://' === substr($streamUrl, 0, 7)) { $streamUrl = substr($streamUrl, 7); $prefix = 'file://'; } // other type of stream, not supported if (false !== strpos($streamUrl, '://')) { return $streamUrl; } // already absolute if (substr($streamUrl, 0, 1) === '/' || substr($streamUrl, 1, 1) === ':' || substr($streamUrl, 0, 2) === '\\\\') { return $prefix.$streamUrl; } $streamUrl = getcwd() . '/' . $streamUrl; return $prefix.$streamUrl; } /** * Return the JSON representation of a value * * @param mixed $data * @param int $encodeFlags flags to pass to json encode, defaults to DEFAULT_JSON_FLAGS * @param bool $ignoreErrors whether to ignore encoding errors or to throw on error, when ignored and the encoding fails, "null" is returned which is valid json for null * @throws \RuntimeException if encoding fails and errors are not ignored * @return string when errors are ignored and the encoding fails, "null" is returned which is valid json for null */ public static function jsonEncode($data, ?int $encodeFlags = null, bool $ignoreErrors = false): string { if (null === $encodeFlags) { $encodeFlags = self::DEFAULT_JSON_FLAGS; } if ($ignoreErrors) { $json = @json_encode($data, $encodeFlags); if (false === $json) { return 'null'; } return $json; } $json = json_encode($data, $encodeFlags); if (false === $json) { $json = self::handleJsonError(json_last_error(), $data); } return $json; } /** * Handle a json_encode failure. * * If the failure is due to invalid string encoding, try to clean the * input and encode again. If the second encoding attempt fails, the * initial error is not encoding related or the input can't be cleaned then * raise a descriptive exception. * * @param int $code return code of json_last_error function * @param mixed $data data that was meant to be encoded * @param int $encodeFlags flags to pass to json encode, defaults to JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE | JSON_PRESERVE_ZERO_FRACTION * @throws \RuntimeException if failure can't be corrected * @return string JSON encoded data after error correction */ public static function handleJsonError(int $code, $data, ?int $encodeFlags = null): string { if ($code !== JSON_ERROR_UTF8) { self::throwEncodeError($code, $data); } if (is_string($data)) { self::detectAndCleanUtf8($data); } elseif (is_array($data)) { array_walk_recursive($data, array('Monolog\Utils', 'detectAndCleanUtf8')); } else { self::throwEncodeError($code, $data); } if (null === $encodeFlags) { $encodeFlags = self::DEFAULT_JSON_FLAGS; } $json = json_encode($data, $encodeFlags); if ($json === false) { self::throwEncodeError(json_last_error(), $data); } return $json; } /** * @internal */ public static function pcreLastErrorMessage(int $code): string { if (PHP_VERSION_ID >= 80000) { return preg_last_error_msg(); } $constants = (get_defined_constants(true))['pcre']; $constants = array_filter($constants, function ($key) { return substr($key, -6) == '_ERROR'; }, ARRAY_FILTER_USE_KEY); $constants = array_flip($constants); return $constants[$code] ?? 'UNDEFINED_ERROR'; } /** * Throws an exception according to a given code with a customized message * * @param int $code return code of json_last_error function * @param mixed $data data that was meant to be encoded * @throws \RuntimeException * * @return never */ private static function throwEncodeError(int $code, $data): void { switch ($code) { case JSON_ERROR_DEPTH: $msg = 'Maximum stack depth exceeded'; break; case JSON_ERROR_STATE_MISMATCH: $msg = 'Underflow or the modes mismatch'; break; case JSON_ERROR_CTRL_CHAR: $msg = 'Unexpected control character found'; break; case JSON_ERROR_UTF8: $msg = 'Malformed UTF-8 characters, possibly incorrectly encoded'; break; default: $msg = 'Unknown error'; } throw new \RuntimeException('JSON encoding failed: '.$msg.'. Encoding: '.var_export($data, true)); } /** * Detect invalid UTF-8 string characters and convert to valid UTF-8. * * Valid UTF-8 input will be left unmodified, but strings containing * invalid UTF-8 codepoints will be reencoded as UTF-8 with an assumed * original encoding of ISO-8859-15. This conversion may result in * incorrect output if the actual encoding was not ISO-8859-15, but it * will be clean UTF-8 output and will not rely on expensive and fragile * detection algorithms. * * Function converts the input in place in the passed variable so that it * can be used as a callback for array_walk_recursive. * * @param mixed $data Input to check and convert if needed, passed by ref */ private static function detectAndCleanUtf8(&$data): void { if (is_string($data) && !preg_match('//u', $data)) { $data = preg_replace_callback( '/[\x80-\xFF]+/', function ($m) { return function_exists('mb_convert_encoding') ? mb_convert_encoding($m[0], 'UTF-8', 'ISO-8859-1') : utf8_encode($m[0]); }, $data ); if (!is_string($data)) { $pcreErrorCode = preg_last_error(); throw new \RuntimeException('Failed to preg_replace_callback: ' . $pcreErrorCode . ' / ' . self::pcreLastErrorMessage($pcreErrorCode)); } $data = str_replace( ['¤', '¦', '¨', '´', '¸', '¼', '½', '¾'], ['€', 'Š', 'š', 'Ž', 'ž', 'Œ', 'œ', 'Ÿ'], $data ); } } /** * Converts a string with a valid 'memory_limit' format, to bytes. * * @param string|false $val * @return int|false Returns an integer representing bytes. Returns FALSE in case of error. */ public static function expandIniShorthandBytes($val) { if (!is_string($val)) { return false; } // support -1 if ((int) $val < 0) { return (int) $val; } if (!preg_match('/^\s*(?<val>\d+)(?:\.\d+)?\s*(?<unit>[gmk]?)\s*$/i', $val, $match)) { return false; } $val = (int) $match['val']; switch (strtolower($match['unit'] ?? '')) { case 'g': $val *= 1024; case 'm': $val *= 1024; case 'k': $val *= 1024; } return $val; } /** * @param array<mixed> $record */ public static function getRecordMessageForException(array $record): string { $context = ''; $extra = ''; try { if ($record['context']) { $context = "\nContext: " . json_encode($record['context']); } if ($record['extra']) { $extra = "\nExtra: " . json_encode($record['extra']); } } catch (\Throwable $e) { // noop } return "\nThe exception occurred while attempting to log: " . $record['message'] . $context . $extra; } }