* @package WoltLabSuite\Core\Util * @since 5.2 */ final class ExceptionLogUtil { /** * Splits the given string of Exceptions into an array. * * @param string $contents * @return string[] */ public static function splitLog($contents) { // unify newlines $contents = StringUtil::unifyNewlines($contents); // split contents $split = new Regex('(?:^|\n<<<<\n\n)(?:<<<<<<<<([a-f0-9]{40})<<<<\n|$)'); $contents = $split->split($contents, Regex::SPLIT_NON_EMPTY_ONLY | Regex::CAPTURE_SPLIT_DELIMITER); // even items become keys, odd items become values return array_merge(...array_map( function($v) { return [$v[0] => $v[1]]; }, array_chunk($contents, 2) )); } /** * Parses the given log entry. * * @param string $entry * @return mixed[] */ public static function parseException($entry) { static $regex = null; static $chainRegex = null; if ($regex === null || $chainRegex === null) { $regex = new Regex("(?P[MTWFS][a-z]{2}, \d{1,2} [JFMASOND][a-z]{2} \d{4} \d{2}:\d{2}:\d{2} [+-]\d{4})\s*\n". "Message: (?P.*?)\s*\n". "PHP version: (?P.*?)\s*\n". "WoltLab Suite version: (?P.*?)\s*\n". "Request URI: (?P.*?)\s*\n". "Referrer: (?P.*?)\s*\n". "User Agent: (?P.*?)\s*\n". "Peak Memory Usage: (?\d+)/(?(?:\d+|-1))\s*\n". "(?======\n". ".*)", Regex::DOT_ALL); $chainRegex = new Regex("======\n". "Error Class: (?P.*?)\s*\n". "Error Message: (?P.*?)\s*\n". "Error Code: (?P

[a-zA-Z0-9]+)\s*\n".
			"File: (?P.*?) \((?P\d+)\)\s*\n".
			"Extra Information: (?P(?:-|[a-zA-Z0-9+/]+={0,2}))\s*\n".
			"Stack Trace: (?P\[[^\n]+\])", Regex::DOT_ALL);
		}
		
		if (!$regex->match($entry)) {
			throw new \InvalidArgumentException('The given entry is malformed.');
		}
		$matches = $regex->getMatches();
		$chainRegex->match($matches['chain'], true, Regex::ORDER_MATCH_BY_SET);
		
		$chainMatches = array_map(function ($item) {
			if ($item['information'] === '-') {
				$item['information'] = null;
			}
			else {
				try {
					$item['information'] = unserialize(base64_decode($item['information']), ['allowed_classes' => false]);
				}
				catch (SystemException $e) {
					throw new \InvalidArgumentException('The additional information section of the given entry is malformed.', 0, $e);
				}
			}
			
			try {
				$item['stack'] = JSON::decode($item['stack']);
			}
			catch (SystemException $e) {
				throw new \InvalidArgumentException('The stack trace of the given entry is malformed.', 0, $e);
			}
			
			return $item;
		}, $chainRegex->getMatches());
		
		$matches['stackHash'] = sha1(implode("\0", array_map(function ($item) {
			$result = "";
			foreach ($item['stack'] as $stack) {
				$result .= $stack['file']."\t".$stack['line']."\t".$stack['class'].$stack['type'].$stack['function']."\n";
			}
			return $result;
		}, $chainMatches)));
		
		$matches['date'] = strtotime($matches['date']);
		$matches['chain'] = $chainMatches;
		
		return $matches;
	}
	
	/**
	 * Forbid creation of ExceptionLogUtil objects.
	 */
	private function __construct() {
		// does nothing
	}
}