Your IP : 216.73.217.13
<?php
declare(strict_types=1);
/*
* This file is part of the TYPO3 CMS project.
*
* It is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, either version 2
* of the License, or any later version.
*
* For the full copyright and license information, please read the
* LICENSE.txt file that was distributed with this source code.
*
* The TYPO3 project - inspiring people to share!
*/
namespace TYPO3\CMS\Core\Error;
use TYPO3\CMS\Core\Information\Typo3Information;
/**
* A basic but solid exception handler which catches everything which
* falls through the other exception handlers and provides useful debugging
* information.
*/
class DebugExceptionHandler extends AbstractExceptionHandler
{
protected bool $logExceptionStackTrace = true;
/**
* Constructs this exception handler - registers itself as the default exception handler.
*/
public function __construct()
{
$callable = [$this, 'handleException'];
if (is_callable($callable)) {
set_exception_handler($callable);
}
}
/**
* Formats and echoes the exception as XHTML.
*
* @param \Throwable $exception The throwable object.
*/
public function echoExceptionWeb(\Throwable $exception)
{
$this->sendStatusHeaders($exception);
$this->writeLogEntries($exception, self::CONTEXT_WEB);
$content = $this->getContent($exception);
$css = $this->getStylesheet();
echo <<<HTML
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>TYPO3 Exception</title>
<meta name="robots" content="noindex,nofollow" />
<style>$css</style>
</head>
<body>
$content
</body>
</html>
HTML;
}
/**
* Formats and echoes the exception for the command line
*
* @param \Throwable $exception The throwable object.
*/
public function echoExceptionCLI(\Throwable $exception)
{
$filePathAndName = $exception->getFile();
$exceptionCodeNumber = $exception->getCode() > 0 ? '#' . $exception->getCode() . ': ' : '';
$this->writeLogEntries($exception, self::CONTEXT_CLI);
echo LF . 'Uncaught TYPO3 Exception ' . $exceptionCodeNumber . $exception->getMessage() . LF;
echo 'thrown in file ' . $filePathAndName . LF;
echo 'in line ' . $exception->getLine() . LF . LF;
die(1);
}
/**
* Generates the HTML for the error output.
*/
protected function getContent(\Throwable $throwable): string
{
$content = '';
// exceptions can be chained
// for easier debugging, all exceptions are displayed to the developer
$throwables = $this->getAllThrowables($throwable);
$count = count($throwables);
foreach ($throwables as $position => $e) {
$content .= $this->getSingleThrowableContent($e, $position + 1, $count);
}
$exceptionInfo = '';
if ($throwable->getCode() > 0) {
$documentationLink = Typo3Information::URL_EXCEPTION . 'debug/' . $throwable->getCode();
$exceptionInfo = <<<INFO
<div class="container">
<div class="callout">
<h4 class="callout-title">Get help in the TYPO3 Documentation</h4>
<div class="callout-body">
<p>
If you need help solving this exception, you can have a look at the TYPO3 Documentation.
There you can find solutions provided by the TYPO3 community.
Once you have found a solution to the problem, help others by contributing to the
documentation page.
</p>
<p>
<a href="$documentationLink" target="_blank" rel="noreferrer">Find a solution for this exception in the TYPO3 Documentation.</a>
</p>
</div>
</div>
</div>
INFO;
}
$typo3Logo = $this->getTypo3LogoAsSvg();
return <<<HTML
<div class="exception-page">
<div class="exception-summary">
<div class="container">
<div class="exception-message-wrapper">
<div class="exception-illustration hidden-xs-down">$typo3Logo</div>
<h1 class="exception-message break-long-words">Whoops, looks like something went wrong.</h1>
</div>
</div>
</div>
$exceptionInfo
<div class="container">
$content
</div>
</div>
HTML;
}
/**
* Renders the HTML for a single throwable.
*/
protected function getSingleThrowableContent(\Throwable $throwable, int $index, int $total): string
{
$exceptionTitle = get_class($throwable);
$exceptionCode = $throwable->getCode() ? '#' . $throwable->getCode() . ' ' : '';
$exceptionMessage = $this->escapeHtml($throwable->getMessage());
// The trace does not contain the step where the exception is thrown.
// To display it as well it is added manually to the trace.
$trace = $throwable->getTrace();
array_unshift($trace, [
'file' => $throwable->getFile(),
'line' => $throwable->getLine(),
'args' => [],
]);
$backtraceCode = $this->getBacktraceCode($trace);
return <<<HTML
<div class="trace">
<div class="trace-head">
<h3 class="trace-class">
<span class="text-body-secondary">({$index}/{$total})</span>
<span class="exception-title">{$exceptionCode}{$exceptionTitle}</span>
</h3>
<p class="trace-message break-long-words">{$exceptionMessage}</p>
</div>
<div class="trace-body">
{$backtraceCode}
</div>
</div>
HTML;
}
/**
* Generates the stylesheet needed to display the error page.
*/
protected function getStylesheet(): string
{
return <<<STYLESHEET
html {
-webkit-text-size-adjust: 100%;
-ms-text-size-adjust: 100%;
-ms-overflow-style: scrollbar;
-webkit-tap-highlight-color: transparent;
}
body {
margin: 0;
}
.exception-page {
background-color: #eaeaea;
color: #212121;
font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";
font-weight: 400;
height: 100vh;
line-height: 1.5;
overflow-x: hidden;
overflow-y: scroll;
text-align: left;
top: 0;
}
.panel-collapse .exception-page {
height: 100%;
}
.exception-page a {
color: #ff8700;
text-decoration: underline;
}
.exception-page a:hover {
text-decoration: none;
}
.exception-page abbr[title] {
border-bottom: none;
cursor: help;
text-decoration: none;
}
.exception-page code,
.exception-page kbd,
.exception-page pre,
.exception-page samp {
font-family: SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;
font-size: 1em;
}
.exception-page pre {
background-color: #ffffff;
overflow-x: auto;
border: 1px solid rgba(0,0,0,0.125);
}
.exception-page pre span {
display: block;
line-height: 1.3em;
}
.exception-page pre span:before {
display: inline-block;
content: attr(data-line);
border-right: 1px solid #b9b9b9;
margin-right: 0.5em;
padding-right: 0.5em;
background-color: #f4f4f4;
width: 4em;
text-align: right;
color: #515151;
}
.exception-page pre span.highlight {
background-color: #cce5ff;
}
.exception-page .break-long-words {
-ms-word-break: break-all;
word-break: break-all;
word-break: break-word;
-webkit-hyphens: auto;
-moz-hyphens: auto;
hyphens: auto;
}
.exception-page .callout {
padding: 1.5rem;
background-color: #fff;
margin-bottom: 2em;
box-shadow: 0 2px 1px rgba(0,0,0,.15);
border-left: 3px solid #8c8c8c;
}
.exception-page .callout-title {
margin: 0;
}
.exception-page .callout-body p:last-child {
margin-bottom: 0;
}
.exception-page .container {
max-width: 1140px;
margin: 0 auto;
padding: 0 30px;
}
.panel-collapse .exception-page .container {
width: 100%;
}
.exception-page .exception-illustration {
width: 3em;
height: 3em;
float: left;
margin-right: 1rem;
}
.exception-page .exception-illustration svg {
width: 100%;
}
.exception-page .exception-illustration svg path {
fill: #ff8700;
}
.exception-page .exception-summary {
background: #000000;
color: #fff;
padding: 1.5rem 0;
margin-bottom: 2rem;
}
.exception-page .exception-summary h1 {
margin: 0;
}
.exception-page .text-body-secondary {
opacity: 0.5;
}
.exception-page .trace {
background-color: #fff;
margin-bottom: 2rem;
box-shadow: 0 2px 1px rgba(0,0,0,.15);
}
.exception-page .trace-arguments {
color: #8c8c8c;
}
.exception-page .trace-body {
}
.exception-page .trace-call {
margin-bottom: 1rem;
}
.exception-page .trace-class {
margin: 0;
}
.exception-page .trace-file pre {
margin-top: 1.5rem;
margin-bottom: 0;
}
.exception-page .trace-head {
color: #721c24;
background-color: #f8d7da;
padding: 1.5rem;
}
.exception-page .trace-file-path {
word-break: break-all;
}
.exception-page .trace-message {
margin-bottom: 0;
}
.exception-page .trace-step {
padding: 1.5rem;
border-bottom: 1px solid #b9b9b9;
}
.exception-page .trace-step > *:first-child {
margin-top: 0;
}
.exception-page .trace-step > *:last-child {
margin-bottom: 0;
}
.exception-page .trace-step:nth-child(even)
{
background-color: #fafafa;
}
.exception-page .trace-step:last-child {
border-bottom: none;
}
STYLESHEET;
}
/**
* Renders the backtrace as HTML.
*/
protected function getBacktraceCode(array $trace): string
{
$content = '';
foreach ($trace as $index => $step) {
$content .= '<div class="trace-step">';
$args = $this->flattenArgs($step['args'] ?? []);
if (isset($step['function'])) {
$content .= '<div class="trace-call">' . sprintf(
'at <span class="trace-class">%s</span><span class="trace-type">%s</span><span class="trace-method">%s</span>(<span class="trace-arguments">%s</span>)',
$step['class'] ?? '',
$step['type'] ?? '',
$step['function'],
$this->formatArgs($args)
) . '</div>';
}
if (isset($step['file']) && isset($step['line'])) {
$content .= $this->getCodeSnippet($step['file'], $step['line']);
}
$content .= '</div>';
}
return $content;
}
/**
* Returns a code snippet from the specified file.
*
* @param string $filePathAndName Absolute path and file name of the PHP file
* @param int $lineNumber Line number defining the center of the code snippet
* @return string The code snippet
*/
protected function getCodeSnippet(string $filePathAndName, int $lineNumber): string
{
$showLinesAround = 4;
$content = '<div class="trace-file">';
$content .= '<div class="trace-file-head">' . $this->formatPath($filePathAndName, $lineNumber) . '</div>';
if (@file_exists($filePathAndName)) {
$phpFile = @file($filePathAndName);
if (is_array($phpFile)) {
$startLine = $lineNumber > $showLinesAround ? $lineNumber - $showLinesAround : 1;
$phpFileCount = count($phpFile);
$endLine = $lineNumber < $phpFileCount - $showLinesAround ? $lineNumber + $showLinesAround + 1 : $phpFileCount + 1;
if ($endLine > $startLine) {
$content .= '<div class="trace-file-content">';
$content .= '<pre>';
for ($line = $startLine; $line < $endLine; $line++) {
$codeLine = str_replace("\t", ' ', $phpFile[$line - 1]);
$spanClass = '';
if ($line === $lineNumber) {
$spanClass = 'highlight';
}
$content .= '<span class="' . $spanClass . '" data-line="' . $line . '">' . $this->escapeHtml($codeLine) . '</span>';
}
$content .= '</pre>';
$content .= '</div>';
}
}
}
$content .= '</div>';
return $content;
}
/**
* Formats a path adding a line number.
*
* @param string $path The full path of the file.
* @param int $line The line number.
*/
protected function formatPath(string $path, int $line): string
{
return sprintf(
'<span class="block trace-file-path">in <strong>%s</strong>%s</span>',
$this->escapeHtml($path),
$line > 0 ? ' line ' . $line : ''
);
}
/**
* Formats the arguments of a method call.
*
* @param array $args The flattened args of method/function call
*/
protected function formatArgs(array $args): string
{
$result = [];
foreach ($args as $key => $item) {
if ($item[0] === 'object') {
$formattedValue = sprintf('<em>object</em>(%s)', $item[1]);
} elseif ($item[0] === 'array') {
$formattedValue = sprintf('<em>array</em>(%s)', is_array($item[1]) ? $this->formatArgs($item[1]) : $item[1]);
} elseif ($item[0] === 'null') {
$formattedValue = '<em>null</em>';
} elseif ($item[0] === 'boolean') {
$formattedValue = '<em>' . strtolower(var_export($item[1], true)) . '</em>';
} elseif ($item[0] === 'resource') {
$formattedValue = '<em>resource</em>';
} else {
$formattedValue = str_replace("\n", '', $this->escapeHtml(var_export($item[1], true)));
}
$result[] = \is_int($key) ? $formattedValue : sprintf("'%s' => %s", $this->escapeHtml($key), $formattedValue);
}
return implode(', ', $result);
}
protected function flattenArgs(array $args, int $level = 0, int &$count = 0): array
{
$result = [];
foreach ($args as $key => $value) {
if (++$count > 1e4) {
return ['array', '*SKIPPED over 10000 entries*'];
}
if ($value instanceof \__PHP_Incomplete_Class) {
// is_object() returns false on PHP<=7.1
$result[$key] = ['incomplete-object', $this->getClassNameFromIncomplete($value)];
} elseif (is_object($value)) {
$result[$key] = ['object', get_class($value)];
} elseif (is_array($value)) {
if ($level > 10) {
$result[$key] = ['array', '*DEEP NESTED ARRAY*'];
} else {
$result[$key] = ['array', $this->flattenArgs($value, $level + 1, $count)];
}
} elseif ($value === null) {
$result[$key] = ['null', null];
} elseif (is_bool($value)) {
$result[$key] = ['boolean', $value];
} elseif (is_int($value)) {
$result[$key] = ['integer', $value];
} elseif (is_float($value)) {
$result[$key] = ['float', $value];
} elseif (is_resource($value)) {
$result[$key] = ['resource', get_resource_type($value)];
} else {
$result[$key] = ['string', (string)$value];
}
}
return $result;
}
protected function getClassNameFromIncomplete(\__PHP_Incomplete_Class $value): string
{
$array = new \ArrayObject($value);
return $array['__PHP_Incomplete_Class_Name'];
}
protected function escapeHtml(string $str): string
{
return htmlspecialchars($str, ENT_COMPAT | ENT_SUBSTITUTE);
}
protected function getTypo3LogoAsSvg(): string
{
return <<<SVG
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path d="M11.1 10.3c-.2 0-.3.1-.5.1C9 10.4 6.8 5 6.8 3.2c0-.7.2-.9.4-1.1-2 .2-4.2.9-4.9 1.8-.2.2-.3.6-.3 1 0 2.8 3 9.2 5.1 9.2 1 0 2.6-1.6 4-3.8m-1-8.4c1.9 0 3.9.3 3.9 1.4 0 2.2-1.4 4.9-2.1 4.9C10.6 8.3 9 4.7 9 2.9c0-.8.3-1 1.1-1"></path></svg>
SVG;
}
protected function getAllThrowables(\Throwable $throwable): array
{
$all = [$throwable];
while ($throwable = $throwable->getPrevious()) {
$all[] = $throwable;
}
return $all;
}
}