346 lines
10 KiB
PHP
346 lines
10 KiB
PHP
<?php
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/**
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* This file is part of the ForkBB <https://github.com/forkbb>.
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*
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* @copyright (c) Visman <mio.visman@yandex.ru, https://github.com/MioVisman>
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* @license The MIT License (MIT)
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*/
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declare(strict_types=1);
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namespace ForkBB\Core;
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use ForkBB\Core\Container;
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use Psr\Log\NullLogger;
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use Throwable;
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class ErrorHandler
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{
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protected Container $c;
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/**
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* Уровень буфера вывода на котором работает обработчик
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*/
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protected int $obLevel;
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/**
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* Описание ошибки
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*/
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protected ?array $error = null;
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/**
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* Скрываемая часть пути до файла
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*/
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protected string $hidePath;
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/**
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* Список ошибок
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*/
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protected array $type = [
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0 => ['OTHER_ERROR', 'error'],
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\E_ERROR => ['E_ERROR', 'error'],
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\E_WARNING => ['E_WARNING', 'warning'],
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\E_PARSE => ['E_PARSE', 'critical'],
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\E_NOTICE => ['E_NOTICE', 'notice'],
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\E_CORE_ERROR => ['E_CORE_ERROR', 'error'],
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\E_CORE_WARNING => ['E_CORE_WARNING', 'warning'],
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\E_COMPILE_ERROR => ['E_COMPILE_ERROR', 'error'],
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\E_COMPILE_WARNING => ['E_COMPILE_WARNING', 'warning'],
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\E_USER_ERROR => ['E_USER_ERROR', 'error'],
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\E_USER_WARNING => ['E_USER_WARNING', 'warning'],
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\E_USER_NOTICE => ['E_USER_NOTICE', 'notice'],
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\E_STRICT => ['E_STRICT', 'error'],
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\E_RECOVERABLE_ERROR => ['E_RECOVERABLE_ERROR', 'error'],
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\E_DEPRECATED => ['E_DEPRECATED', 'warning'],
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\E_USER_DEPRECATED => ['E_USER_DEPRECATED', 'warning'],
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];
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/**
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* Уровень ошибок только для логирования
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*/
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protected int $logOnly = 0;
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public function __construct()
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{
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$this->hidePath = \realpath(__DIR__ . '/../../');
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\set_error_handler([$this, 'errorHandler'], \E_ALL);
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\set_exception_handler([$this, 'exceptionHandler']);
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\register_shutdown_function([$this, 'shutdownHandler']);
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\ob_start();
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$this->obLevel = \ob_get_level();
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}
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public function __destruct()
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{
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\restore_error_handler();
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\restore_exception_handler();
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//????
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}
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public function setContainer(Container $c): void
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{
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$this->c = $c;
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$c->ErrorHandler = $this;
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}
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/**
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* Устанавливает уровень ошибок, которые логируются без остановки(?) скрипта
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*/
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public function logOnly(int $level): int
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{
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$result = $this->logOnly;
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$this->logOnly = $level;
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return $result;
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}
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/**
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* Обрабатыет перехватываемые ошибки
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*/
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public function errorHandler(int $type, string $message, string $file, int $line): bool
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{
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$logOnly = $this->logOnly & $type;
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if (
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$type & \error_reporting()
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|| $logOnly
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) {
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$this->error = [
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'type' => $type,
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'message' => $message,
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'file' => $file,
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'line' => $line,
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'trace' => \debug_backtrace(0),
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];
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$this->log($this->error);
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if ($logOnly) {
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$this->error = [];
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\error_clear_last();
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} else {
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exit(1);
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}
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}
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return true;
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}
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/**
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* Обрабатывает не перехваченные исключения
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*/
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public function exceptionHandler(Throwable $e): void
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{
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$this->error = [
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'type' => 0,
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'message' => $e->getMessage(),
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'file' => $e->getFile(),
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'line' => $e->getLine(),
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'trace' => $e->getTrace(),
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'exception' => $e,
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];
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$this->log($this->error);
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}
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/**
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* Окончательно обрабатывает ошибки (в том числе фатальные) и исключения
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*/
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public function shutdownHandler(): void
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{
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$show = false;
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if (isset($this->error['type'])) {
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$show = true;
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} elseif (
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\is_array($this->error = \error_get_last())
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&& $this->error['type'] & \error_reporting()
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) {
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$show = true;
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$this->log($this->error);
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}
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while (\ob_get_level() > $this->obLevel) {
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\ob_end_clean();
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}
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if (\ob_get_level() === $this->obLevel) {
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if ($show) {
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\ob_end_clean();
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$this->show($this->error);
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} else {
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\ob_end_flush();
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}
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}
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}
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/**
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* Отправляет сообщение в лог
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*/
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protected function log(array $error): void
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{
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$useErrLog = true;
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try {
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if (
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$this->c instanceof Container
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&& ! $this->c->Log instanceof NullLogger
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) {
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$context = [];
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$method = $this->type[$error['type']][1] ?? $this->type[0][1];
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if (isset($error['exception'])) {
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$context['exception'] = $error['exception'];
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}
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$context['headers'] = false;
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$this->c->Log->{$method}($this->message($error), $context);
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$useErrLog = false;
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}
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} catch (Throwable $e) {
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\error_log($this->message([
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'type' => 0,
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'message' => $e->getMessage(),
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'file' => $e->getFile(),
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'line' => $e->getLine(),
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'trace' => $e->getTrace(),
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'exception' => $e,
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], true));
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}
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if ($useErrLog) {
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\error_log($this->message($error, true));
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}
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}
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/**
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* Выводит сообщение об ошибке
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*
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* @param array $error
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*/
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protected function show(array $error): void
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{
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\header('HTTP/1.1 500 Internal Server Error');
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\header('Content-Type: text/html; charset=utf-8');
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echo <<<'EOT'
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<!DOCTYPE html>
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<html lang="en" dir="ltr">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>500 Internal Server Error</title>
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</head>
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<body>
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EOT;
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if (\filter_var(\ini_get('display_errors'), \FILTER_VALIDATE_BOOLEAN)) {
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echo '<p>' . $this->e($this->message($error)) . '</p>';
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if (
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isset($error['trace'])
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&& \is_array($error['trace'])
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) {
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echo '<div><p>Trace:</p><ol>';
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foreach ($error['trace'] as $cur) {
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if (
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isset($cur['file'], $cur['line'], $error['file'], $error['line'])
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&& (int) $error['line'] === (int) $cur['line']
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&& $error['file'] === $cur['file']
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) {
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continue;
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}
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$line = $cur['file'] ?? '-';
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$line .= '(' . ($cur['line'] ?? '-') . '): ';
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if (isset($cur['class'])) {
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$line .= $cur['class'] . $cur['type'];
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}
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$line .= ($cur['function'] ?? 'unknown') . '(';
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if (
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! empty($cur['args'])
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&& \is_array($cur['args'])
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) {
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$comma = '';
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foreach ($cur['args'] as $arg) {
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$type = \gettype($arg);
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switch ($type) {
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case 'boolean':
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$type = $arg ? 'true' : 'false';
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break;
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case 'array':
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$type .= '(' . \count($arg) . ')';
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break;
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case 'resource':
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$type = \get_resource_type($arg);
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break;
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case 'object':
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$type .= '{' . \get_class($arg) . '}';
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break;
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}
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$line .= $comma . $type;
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$comma = ', ';
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}
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}
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$line .= ')';
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$line = $this->e(\str_replace($this->hidePath, '...', $line));
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echo "<li>{$line}</li>";
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}
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echo '</ol></div>';
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}
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} else {
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echo '<p>Server is tired :(</p>';
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}
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echo <<<'EOT'
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</body>
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</html>
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EOT;
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}
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/**
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* Формирует сообщение
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*/
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protected function message(array $error, bool $useException = false): string
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{
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$type = $this->type[$error['type']][0] ?? $this->type[0][0];
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if (
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$useException
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&& isset($error['exception'])
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&& $error['exception'] instanceof Throwable
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) {
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$result = "PHP {$type}: {$error['exception']}";
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} else {
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$result = "PHP {$type}: {$error['message']} in {$error['file']}:[{$error['line']}]";
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}
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return \preg_replace('%[\x00-\x1F]%', ' ', \str_replace($this->hidePath, '...', $result));
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}
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/**
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* Экранирует спецсимволов HTML-сущностями
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*/
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protected function e(string $arg): string
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{
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return \htmlspecialchars($arg, \ENT_HTML5 | \ENT_QUOTES | \ENT_SUBSTITUTE, 'UTF-8');
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}
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}
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