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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Debug;
use Psr\Log\AbstractLogger;
/**
* A buffering logger that stacks logs for later.
*
* @author Nicolas Grekas <p@tchwork.com>
*/
class BufferingLogger extends AbstractLogger
{
private $logs = array();
public function log($level, $message, array $context = array())
{
$this->logs[] = array($level, $message, $context);
}
public function cleanLogs()
{
$logs = $this->logs;
$this->logs = array();
return $logs;
}
}
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CHANGELOG
=========
3.0.0
-----
* removed classes, methods and interfaces deprecated in 2.x
2.8.0
-----
* added BufferingLogger for errors that happen before a proper logger is configured
* allow throwing from `__toString()` with `return trigger_error($e, E_USER_ERROR);`
* deprecate ExceptionHandler::createResponse
2.7.0
-----
* added deprecations checking for parent interfaces/classes to DebugClassLoader
* added ZTS support to symfony_debug extension
* added symfony_debug_backtrace() to symfony_debug extension
to track the backtrace of fatal errors
2.6.0
-----
* generalized ErrorHandler and ExceptionHandler,
with some new methods and others deprecated
* enhanced error messages for uncaught exceptions
2.5.0
-----
* added ExceptionHandler::setHandler()
* added UndefinedMethodFatalErrorHandler
* deprecated DummyException
2.4.0
-----
* added a DebugClassLoader able to wrap any autoloader providing a findFile method
* improved error messages for not found classes and functions
2.3.0
-----
* added the component
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Debug;
/**
* Registers all the debug tools.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class Debug
{
private static $enabled = false;
/**
* Enables the debug tools.
*
* This method registers an error handler and an exception handler.
*
* If the Symfony ClassLoader component is available, a special
* class loader is also registered.
*
* @param int $errorReportingLevel The level of error reporting you want
* @param bool $displayErrors Whether to display errors (for development) or just log them (for production)
*/
public static function enable($errorReportingLevel = E_ALL, $displayErrors = true)
{
if (static::$enabled) {
return;
}
static::$enabled = true;
if (null !== $errorReportingLevel) {
error_reporting($errorReportingLevel);
} else {
error_reporting(E_ALL);
}
if ('cli' !== PHP_SAPI) {
ini_set('display_errors', 0);
ExceptionHandler::register();
} elseif ($displayErrors && (!ini_get('log_errors') || ini_get('error_log'))) {
// CLI - display errors only if they're not already logged to STDERR
ini_set('display_errors', 1);
}
if ($displayErrors) {
ErrorHandler::register(new ErrorHandler(new BufferingLogger()));
} else {
ErrorHandler::register()->throwAt(0, true);
}
DebugClassLoader::enable();
}
}
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Debug;
/**
* Autoloader checking if the class is really defined in the file found.
*
* The ClassLoader will wrap all registered autoloaders
* and will throw an exception if a file is found but does
* not declare the class.
*
* @author Fabien Potencier <fabien@symfony.com>
* @author Christophe Coevoet <stof@notk.org>
* @author Nicolas Grekas <p@tchwork.com>
*/
class DebugClassLoader
{
private $classLoader;
private $isFinder;
private static $caseCheck;
private static $deprecated = array();
private static $php7Reserved = array('int', 'float', 'bool', 'string', 'true', 'false', 'null');
private static $darwinCache = array('/' => array('/', array()));
/**
* Constructor.
*
* @param callable $classLoader A class loader
*/
public function __construct(callable $classLoader)
{
$this->classLoader = $classLoader;
$this->isFinder = is_array($classLoader) && method_exists($classLoader[0], 'findFile');
if (!isset(self::$caseCheck)) {
$file = file_exists(__FILE__) ? __FILE__ : rtrim(realpath('.'), DIRECTORY_SEPARATOR);
$i = strrpos($file, DIRECTORY_SEPARATOR);
$dir = substr($file, 0, 1 + $i);
$file = substr($file, 1 + $i);
$test = strtoupper($file) === $file ? strtolower($file) : strtoupper($file);
$test = realpath($dir.$test);
if (false === $test || false === $i) {
// filesystem is case sensitive
self::$caseCheck = 0;
} elseif (substr($test, -strlen($file)) === $file) {
// filesystem is case insensitive and realpath() normalizes the case of characters
self::$caseCheck = 1;
} elseif (false !== stripos(PHP_OS, 'darwin')) {
// on MacOSX, HFS+ is case insensitive but realpath() doesn't normalize the case of characters
self::$caseCheck = 2;
} else {
// filesystem case checks failed, fallback to disabling them
self::$caseCheck = 0;
}
}
}
/**
* Gets the wrapped class loader.
*
* @return callable The wrapped class loader
*/
public function getClassLoader()
{
return $this->classLoader;
}
/**
* Wraps all autoloaders.
*/
public static function enable()
{
// Ensures we don't hit https://bugs.php.net/42098
class_exists('Symfony\Component\Debug\ErrorHandler');
class_exists('Psr\Log\LogLevel');
if (!is_array($functions = spl_autoload_functions())) {
return;
}
foreach ($functions as $function) {
spl_autoload_unregister($function);
}
foreach ($functions as $function) {
if (!is_array($function) || !$function[0] instanceof self) {
$function = array(new static($function), 'loadClass');
}
spl_autoload_register($function);
}
}
/**
* Disables the wrapping.
*/
public static function disable()
{
if (!is_array($functions = spl_autoload_functions())) {
return;
}
foreach ($functions as $function) {
spl_autoload_unregister($function);
}
foreach ($functions as $function) {
if (is_array($function) && $function[0] instanceof self) {
$function = $function[0]->getClassLoader();
}
spl_autoload_register($function);
}
}
/**
* Loads the given class or interface.
*
* @param string $class The name of the class
*
* @return bool|null True, if loaded
*
* @throws \RuntimeException
*/
public function loadClass($class)
{
ErrorHandler::stackErrors();
try {
if ($this->isFinder) {
if ($file = $this->classLoader[0]->findFile($class)) {
require_once $file;
}
} else {
call_user_func($this->classLoader, $class);
$file = false;
}
} finally {
ErrorHandler::unstackErrors();
}
$exists = class_exists($class, false) || interface_exists($class, false) || trait_exists($class, false);
if ('\\' === $class[0]) {
$class = substr($class, 1);
}
if ($exists) {
$refl = new \ReflectionClass($class);
$name = $refl->getName();
if ($name !== $class && 0 === strcasecmp($name, $class)) {
throw new \RuntimeException(sprintf('Case mismatch between loaded and declared class names: %s vs %s', $class, $name));
}
if (in_array(strtolower($refl->getShortName()), self::$php7Reserved)) {
@trigger_error(sprintf('%s uses a reserved class name (%s) that will break on PHP 7 and higher', $name, $refl->getShortName()), E_USER_DEPRECATED);
} elseif (preg_match('#\n \* @deprecated (.*?)\r?\n \*(?: @|/$)#s', $refl->getDocComment(), $notice)) {
self::$deprecated[$name] = preg_replace('#\s*\r?\n \* +#', ' ', $notice[1]);
} else {
if (2 > $len = 1 + (strpos($name, '\\', 1 + strpos($name, '\\')) ?: strpos($name, '_'))) {
$len = 0;
$ns = '';
} else {
switch ($ns = substr($name, 0, $len)) {
case 'Symfony\Bridge\\':
case 'Symfony\Bundle\\':
case 'Symfony\Component\\':
$ns = 'Symfony\\';
$len = strlen($ns);
break;
}
}
$parent = get_parent_class($class);
if (!$parent || strncmp($ns, $parent, $len)) {
if ($parent && isset(self::$deprecated[$parent]) && strncmp($ns, $parent, $len)) {
@trigger_error(sprintf('The %s class extends %s that is deprecated %s', $name, $parent, self::$deprecated[$parent]), E_USER_DEPRECATED);
}
$parentInterfaces = array();
$deprecatedInterfaces = array();
if ($parent) {
foreach (class_implements($parent) as $interface) {
$parentInterfaces[$interface] = 1;
}
}
foreach ($refl->getInterfaceNames() as $interface) {
if (isset(self::$deprecated[$interface]) && strncmp($ns, $interface, $len)) {
$deprecatedInterfaces[] = $interface;
}
foreach (class_implements($interface) as $interface) {
$parentInterfaces[$interface] = 1;
}
}
foreach ($deprecatedInterfaces as $interface) {
if (!isset($parentInterfaces[$interface])) {
@trigger_error(sprintf('The %s %s %s that is deprecated %s', $name, $refl->isInterface() ? 'interface extends' : 'class implements', $interface, self::$deprecated[$interface]), E_USER_DEPRECATED);
}
}
}
}
}
if ($file) {
if (!$exists) {
if (false !== strpos($class, '/')) {
throw new \RuntimeException(sprintf('Trying to autoload a class with an invalid name "%s". Be careful that the namespace separator is "\" in PHP, not "/".', $class));
}
throw new \RuntimeException(sprintf('The autoloader expected class "%s" to be defined in file "%s". The file was found but the class was not in it, the class name or namespace probably has a typo.', $class, $file));
}
if (self::$caseCheck) {
$real = explode('\\', $class.strrchr($file, '.'));
$tail = explode(DIRECTORY_SEPARATOR, str_replace('/', DIRECTORY_SEPARATOR, $file));
$i = count($tail) - 1;
$j = count($real) - 1;
while (isset($tail[$i], $real[$j]) && $tail[$i] === $real[$j]) {
--$i;
--$j;
}
array_splice($tail, 0, $i + 1);
}
if (self::$caseCheck && $tail) {
$tail = DIRECTORY_SEPARATOR.implode(DIRECTORY_SEPARATOR, $tail);
$tailLen = strlen($tail);
$real = $refl->getFileName();
if (2 === self::$caseCheck) {
// realpath() on MacOSX doesn't normalize the case of characters
$i = 1 + strrpos($real, '/');
$file = substr($real, $i);
$real = substr($real, 0, $i);
if (isset(self::$darwinCache[$real])) {
$kDir = $real;
} else {
$kDir = strtolower($real);
if (isset(self::$darwinCache[$kDir])) {
$real = self::$darwinCache[$kDir][0];
} else {
$dir = getcwd();
chdir($real);
$real = getcwd().'/';
chdir($dir);
$dir = $real;
$k = $kDir;
$i = strlen($dir) - 1;
while (!isset(self::$darwinCache[$k])) {
self::$darwinCache[$k] = array($dir, array());
self::$darwinCache[$dir] = &self::$darwinCache[$k];
while ('/' !== $dir[--$i]) {
}
$k = substr($k, 0, ++$i);
$dir = substr($dir, 0, $i--);
}
}
}
$dirFiles = self::$darwinCache[$kDir][1];
if (isset($dirFiles[$file])) {
$kFile = $file;
} else {
$kFile = strtolower($file);
if (!isset($dirFiles[$kFile])) {
foreach (scandir($real, 2) as $f) {
if ('.' !== $f[0]) {
$dirFiles[$f] = $f;
if ($f === $file) {
$kFile = $k = $file;
} elseif ($f !== $k = strtolower($f)) {
$dirFiles[$k] = $f;
}
}
}
self::$darwinCache[$kDir][1] = $dirFiles;
}
}
$real .= $dirFiles[$kFile];
}
if (0 === substr_compare($real, $tail, -$tailLen, $tailLen, true)
&& 0 !== substr_compare($real, $tail, -$tailLen, $tailLen, false)
) {
throw new \RuntimeException(sprintf('Case mismatch between class and real file names: %s vs %s in %s', substr($tail, -$tailLen + 1), substr($real, -$tailLen + 1), substr($real, 0, -$tailLen + 1)));
}
}
return true;
}
}
}
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Debug;
use Psr\Log\LogLevel;
use Psr\Log\LoggerInterface;
use Symfony\Component\Debug\Exception\ContextErrorException;
use Symfony\Component\Debug\Exception\FatalErrorException;
use Symfony\Component\Debug\Exception\FatalThrowableError;
use Symfony\Component\Debug\Exception\OutOfMemoryException;
use Symfony\Component\Debug\FatalErrorHandler\UndefinedFunctionFatalErrorHandler;
use Symfony\Component\Debug\FatalErrorHandler\UndefinedMethodFatalErrorHandler;
use Symfony\Component\Debug\FatalErrorHandler\ClassNotFoundFatalErrorHandler;
use Symfony\Component\Debug\FatalErrorHandler\FatalErrorHandlerInterface;
/**
* A generic ErrorHandler for the PHP engine.
*
* Provides five bit fields that control how errors are handled:
* - thrownErrors: errors thrown as \ErrorException
* - loggedErrors: logged errors, when not @-silenced
* - scopedErrors: errors thrown or logged with their local context
* - tracedErrors: errors logged with their stack trace, only once for repeated errors
* - screamedErrors: never @-silenced errors
*
* Each error level can be logged by a dedicated PSR-3 logger object.
* Screaming only applies to logging.
* Throwing takes precedence over logging.
* Uncaught exceptions are logged as E_ERROR.
* E_DEPRECATED and E_USER_DEPRECATED levels never throw.
* E_RECOVERABLE_ERROR and E_USER_ERROR levels always throw.
* Non catchable errors that can be detected at shutdown time are logged when the scream bit field allows so.
* As errors have a performance cost, repeated errors are all logged, so that the developer
* can see them and weight them as more important to fix than others of the same level.
*
* @author Nicolas Grekas <p@tchwork.com>
*/
class ErrorHandler
{
private $levels = array(
E_DEPRECATED => 'Deprecated',
E_USER_DEPRECATED => 'User Deprecated',
E_NOTICE => 'Notice',
E_USER_NOTICE => 'User Notice',
E_STRICT => 'Runtime Notice',
E_WARNING => 'Warning',
E_USER_WARNING => 'User Warning',
E_COMPILE_WARNING => 'Compile Warning',
E_CORE_WARNING => 'Core Warning',
E_USER_ERROR => 'User Error',
E_RECOVERABLE_ERROR => 'Catchable Fatal Error',
E_COMPILE_ERROR => 'Compile Error',
E_PARSE => 'Parse Error',
E_ERROR => 'Error',
E_CORE_ERROR => 'Core Error',
);
private $loggers = array(
E_DEPRECATED => array(null, LogLevel::INFO),
E_USER_DEPRECATED => array(null, LogLevel::INFO),
E_NOTICE => array(null, LogLevel::WARNING),
E_USER_NOTICE => array(null, LogLevel::WARNING),
E_STRICT => array(null, LogLevel::WARNING),
E_WARNING => array(null, LogLevel::WARNING),
E_USER_WARNING => array(null, LogLevel::WARNING),
E_COMPILE_WARNING => array(null, LogLevel::WARNING),
E_CORE_WARNING => array(null, LogLevel::WARNING),
E_USER_ERROR => array(null, LogLevel::CRITICAL),
E_RECOVERABLE_ERROR => array(null, LogLevel::CRITICAL),
E_COMPILE_ERROR => array(null, LogLevel::CRITICAL),
E_PARSE => array(null, LogLevel::CRITICAL),
E_ERROR => array(null, LogLevel::CRITICAL),
E_CORE_ERROR => array(null, LogLevel::CRITICAL),
);
private $thrownErrors = 0x1FFF; // E_ALL - E_DEPRECATED - E_USER_DEPRECATED
private $scopedErrors = 0x1FFF; // E_ALL - E_DEPRECATED - E_USER_DEPRECATED
private $tracedErrors = 0x77FB; // E_ALL - E_STRICT - E_PARSE
private $screamedErrors = 0x55; // E_ERROR + E_CORE_ERROR + E_COMPILE_ERROR + E_PARSE
private $loggedErrors = 0;
private $loggedTraces = array();
private $isRecursive = 0;
private $isRoot = false;
private $exceptionHandler;
private $bootstrappingLogger;
private static $reservedMemory;
private static $stackedErrors = array();
private static $stackedErrorLevels = array();
private static $toStringException = null;
/**
* Registers the error handler.
*
* @param self|null $handler The handler to register
* @param bool $replace Whether to replace or not any existing handler
*
* @return self The registered error handler
*/
public static function register(self $handler = null, $replace = true)
{
if (null === self::$reservedMemory) {
self::$reservedMemory = str_repeat('x', 10240);
register_shutdown_function(__CLASS__.'::handleFatalError');
}
if ($handlerIsNew = null === $handler) {
$handler = new static();
}
if (null === $prev = set_error_handler(array($handler, 'handleError'))) {
restore_error_handler();
// Specifying the error types earlier would expose us to https://bugs.php.net/63206
set_error_handler(array($handler, 'handleError'), $handler->thrownErrors | $handler->loggedErrors);
$handler->isRoot = true;
}
if ($handlerIsNew && is_array($prev) && $prev[0] instanceof self) {
$handler = $prev[0];
$replace = false;
}
if ($replace || !$prev) {
$handler->setExceptionHandler(set_exception_handler(array($handler, 'handleException')));
} else {
restore_error_handler();
}
$handler->throwAt(E_ALL & $handler->thrownErrors, true);
return $handler;
}
public function __construct(BufferingLogger $bootstrappingLogger = null)
{
if ($bootstrappingLogger) {
$this->bootstrappingLogger = $bootstrappingLogger;
$this->setDefaultLogger($bootstrappingLogger);
}
}
/**
* Sets a logger to non assigned errors levels.
*
* @param LoggerInterface $logger A PSR-3 logger to put as default for the given levels
* @param array|int $levels An array map of E_* to LogLevel::* or an integer bit field of E_* constants
* @param bool $replace Whether to replace or not any existing logger
*/
public function setDefaultLogger(LoggerInterface $logger, $levels = E_ALL, $replace = false)
{
$loggers = array();
if (is_array($levels)) {
foreach ($levels as $type => $logLevel) {
if (empty($this->loggers[$type][0]) || $replace || $this->loggers[$type][0] === $this->bootstrappingLogger) {
$loggers[$type] = array($logger, $logLevel);
}
}
} else {
if (null === $levels) {
$levels = E_ALL;
}
foreach ($this->loggers as $type => $log) {
if (($type & $levels) && (empty($log[0]) || $replace || $log[0] === $this->bootstrappingLogger)) {
$log[0] = $logger;
$loggers[$type] = $log;
}
}
}
$this->setLoggers($loggers);
}
/**
* Sets a logger for each error level.
*
* @param array $loggers Error levels to [LoggerInterface|null, LogLevel::*] map
*
* @return array The previous map
*
* @throws \InvalidArgumentException
*/
public function setLoggers(array $loggers)
{
$prevLogged = $this->loggedErrors;
$prev = $this->loggers;
$flush = array();
foreach ($loggers as $type => $log) {
if (!isset($prev[$type])) {
throw new \InvalidArgumentException('Unknown error type: '.$type);
}
if (!is_array($log)) {
$log = array($log);
} elseif (!array_key_exists(0, $log)) {
throw new \InvalidArgumentException('No logger provided');
}
if (null === $log[0]) {
$this->loggedErrors &= ~$type;
} elseif ($log[0] instanceof LoggerInterface) {
$this->loggedErrors |= $type;
} else {
throw new \InvalidArgumentException('Invalid logger provided');
}
$this->loggers[$type] = $log + $prev[$type];
if ($this->bootstrappingLogger && $prev[$type][0] === $this->bootstrappingLogger) {
$flush[$type] = $type;
}
}
$this->reRegister($prevLogged | $this->thrownErrors);
if ($flush) {
foreach ($this->bootstrappingLogger->cleanLogs() as $log) {
$type = $log[2]['type'];
if (!isset($flush[$type])) {
$this->bootstrappingLogger->log($log[0], $log[1], $log[2]);
} elseif ($this->loggers[$type][0]) {
$this->loggers[$type][0]->log($this->loggers[$type][1], $log[1], $log[2]);
}
}
}
return $prev;
}
/**
* Sets a user exception handler.
*
* @param callable $handler A handler that will be called on Exception
*
* @return callable|null The previous exception handler
*/
public function setExceptionHandler(callable $handler = null)
{
$prev = $this->exceptionHandler;
$this->exceptionHandler = $handler;
return $prev;
}
/**
* Sets the PHP error levels that throw an exception when a PHP error occurs.
*
* @param int $levels A bit field of E_* constants for thrown errors
* @param bool $replace Replace or amend the previous value
*
* @return int The previous value
*/
public function throwAt($levels, $replace = false)
{
$prev = $this->thrownErrors;
$this->thrownErrors = ($levels | E_RECOVERABLE_ERROR | E_USER_ERROR) & ~E_USER_DEPRECATED & ~E_DEPRECATED;
if (!$replace) {
$this->thrownErrors |= $prev;
}
$this->reRegister($prev | $this->loggedErrors);
return $prev;
}
/**
* Sets the PHP error levels for which local variables are preserved.
*
* @param int $levels A bit field of E_* constants for scoped errors
* @param bool $replace Replace or amend the previous value
*
* @return int The previous value
*/
public function scopeAt($levels, $replace = false)
{
$prev = $this->scopedErrors;
$this->scopedErrors = (int) $levels;
if (!$replace) {
$this->scopedErrors |= $prev;
}
return $prev;
}
/**
* Sets the PHP error levels for which the stack trace is preserved.
*
* @param int $levels A bit field of E_* constants for traced errors
* @param bool $replace Replace or amend the previous value
*
* @return int The previous value
*/
public function traceAt($levels, $replace = false)
{
$prev = $this->tracedErrors;
$this->tracedErrors = (int) $levels;
if (!$replace) {
$this->tracedErrors |= $prev;
}
return $prev;
}
/**
* Sets the error levels where the @-operator is ignored.
*
* @param int $levels A bit field of E_* constants for screamed errors
* @param bool $replace Replace or amend the previous value
*
* @return int The previous value
*/
public function screamAt($levels, $replace = false)
{
$prev = $this->screamedErrors;
$this->screamedErrors = (int) $levels;
if (!$replace) {
$this->screamedErrors |= $prev;
}
return $prev;
}
/**
* Re-registers as a PHP error handler if levels changed.
*/
private function reRegister($prev)
{
if ($prev !== $this->thrownErrors | $this->loggedErrors) {
$handler = set_error_handler('var_dump');
$handler = is_array($handler) ? $handler[0] : null;
restore_error_handler();
if ($handler === $this) {
restore_error_handler();
if ($this->isRoot) {
set_error_handler(array($this, 'handleError'), $this->thrownErrors | $this->loggedErrors);
} else {
set_error_handler(array($this, 'handleError'));
}
}
}
}
/**
* Handles errors by filtering then logging them according to the configured bit fields.
*
* @param int $type One of the E_* constants
* @param string $file
* @param int $line
* @param array $context
*
* @return bool Returns false when no handling happens so that the PHP engine can handle the error itself
*
* @throws \ErrorException When $this->thrownErrors requests so
*
* @internal
*/
public function handleError($type, $message, $file, $line, array $context, array $backtrace = null)
{
$level = error_reporting() | E_RECOVERABLE_ERROR | E_USER_ERROR | E_DEPRECATED | E_USER_DEPRECATED;
$log = $this->loggedErrors & $type;
$throw = $this->thrownErrors & $type & $level;
$type &= $level | $this->screamedErrors;
if (!$type || (!$log && !$throw)) {
return $type && $log;
}
if (null !== $backtrace && $type & E_ERROR) {
// E_ERROR fatal errors are triggered on HHVM when
// hhvm.error_handling.call_user_handler_on_fatals=1
// which is the way to get their backtrace.
$this->handleFatalError(compact('type', 'message', 'file', 'line', 'backtrace'));
return true;
}
if ($throw) {
if (null !== self::$toStringException) {
$throw = self::$toStringException;
self::$toStringException = null;
} elseif (($this->scopedErrors & $type) && class_exists(ContextErrorException::class)) {
$throw = new ContextErrorException($this->levels[$type].': '.$message, 0, $type, $file, $line, $context);
} else {
$throw = new \ErrorException($this->levels[$type].': '.$message, 0, $type, $file, $line);
}
if (E_USER_ERROR & $type) {
$backtrace = $backtrace ?: $throw->getTrace();
for ($i = 1; isset($backtrace[$i]); ++$i) {
if (isset($backtrace[$i]['function'], $backtrace[$i]['type'], $backtrace[$i - 1]['function'])
&& '__toString' === $backtrace[$i]['function']
&& '->' === $backtrace[$i]['type']
&& !isset($backtrace[$i - 1]['class'])
&& ('trigger_error' === $backtrace[$i - 1]['function'] || 'user_error' === $backtrace[$i - 1]['function'])
) {
// Here, we know trigger_error() has been called from __toString().
// HHVM is fine with throwing from __toString() but PHP triggers a fatal error instead.
// A small convention allows working around the limitation:
// given a caught $e exception in __toString(), quitting the method with
// `return trigger_error($e, E_USER_ERROR);` allows this error handler
// to make $e get through the __toString() barrier.
foreach ($context as $e) {
if (($e instanceof \Exception || $e instanceof \Throwable) && $e->__toString() === $message) {
if (1 === $i) {
// On HHVM
$throw = $e;
break;
}
self::$toStringException = $e;
return true;
}
}
if (1 < $i) {
// On PHP (not on HHVM), display the original error message instead of the default one.
$this->handleException($throw);
// Stop the process by giving back the error to the native handler.
return false;
}
}
}
}
throw $throw;
}
// For duplicated errors, log the trace only once
$e = md5("{$type}/{$line}/{$file}\x00{$message}", true);
$trace = true;
if (!($this->tracedErrors & $type) || isset($this->loggedTraces[$e])) {
$trace = false;
} else {
$this->loggedTraces[$e] = 1;
}
$e = compact('type', 'file', 'line', 'level');
if ($type & $level) {
if ($this->scopedErrors & $type) {
$e['scope_vars'] = $context;
if ($trace) {
$e['stack'] = $backtrace ?: debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT);
}
} elseif ($trace) {
if (null === $backtrace) {
$e['stack'] = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
} else {
foreach ($backtrace as &$frame) {
unset($frame['args'], $frame);
}
$e['stack'] = $backtrace;
}
}
}
if ($this->isRecursive) {
$log = 0;
} elseif (self::$stackedErrorLevels) {
self::$stackedErrors[] = array($this->loggers[$type][0], ($type & $level) ? $this->loggers[$type][1] : LogLevel::DEBUG, $message, $e);
} else {
try {
$this->isRecursive = true;
$this->loggers[$type][0]->log(($type & $level) ? $this->loggers[$type][1] : LogLevel::DEBUG, $message, $e);
} finally {
$this->isRecursive = false;
}
}
return $type && $log;
}
/**
* Handles an exception by logging then forwarding it to another handler.
*
* @param \Exception|\Throwable $exception An exception to handle
* @param array $error An array as returned by error_get_last()
*
* @internal
*/
public function handleException($exception, array $error = null)
{
if (!$exception instanceof \Exception) {
$exception = new FatalThrowableError($exception);
}
$type = $exception instanceof FatalErrorException ? $exception->getSeverity() : E_ERROR;
if (($this->loggedErrors & $type) || $exception instanceof FatalThrowableError) {
$e = array(
'type' => $type,
'file' => $exception->getFile(),
'line' => $exception->getLine(),
'level' => error_reporting(),
'stack' => $exception->getTrace(),
);
if ($exception instanceof FatalErrorException) {
if ($exception instanceof FatalThrowableError) {
$error = array(
'type' => $type,
'message' => $message = $exception->getMessage(),
'file' => $e['file'],
'line' => $e['line'],
);
} else {
$message = 'Fatal '.$exception->getMessage();
}
} elseif ($exception instanceof \ErrorException) {
$message = 'Uncaught '.$exception->getMessage();
if ($exception instanceof ContextErrorException) {
$e['context'] = $exception->getContext();
}
} else {
$message = 'Uncaught Exception: '.$exception->getMessage();
}
}
if ($this->loggedErrors & $type) {
$this->loggers[$type][0]->log($this->loggers[$type][1], $message, $e);
}
if ($exception instanceof FatalErrorException && !$exception instanceof OutOfMemoryException && $error) {
foreach ($this->getFatalErrorHandlers() as $handler) {
if ($e = $handler->handleError($error, $exception)) {
$exception = $e;
break;
}
}
}
if (empty($this->exceptionHandler)) {
throw $exception; // Give back $exception to the native handler
}
try {
call_user_func($this->exceptionHandler, $exception);
} catch (\Exception $handlerException) {
} catch (\Throwable $handlerException) {
}
if (isset($handlerException)) {
$this->exceptionHandler = null;
$this->handleException($handlerException);
}
}
/**
* Shutdown registered function for handling PHP fatal errors.
*
* @param array $error An array as returned by error_get_last()
*
* @internal
*/
public static function handleFatalError(array $error = null)
{
if (null === self::$reservedMemory) {
return;
}
self::$reservedMemory = null;
$handler = set_error_handler('var_dump');
$handler = is_array($handler) ? $handler[0] : null;
restore_error_handler();
if (!$handler instanceof self) {
return;
}
if (null === $error) {
$error = error_get_last();
}
try {
while (self::$stackedErrorLevels) {
static::unstackErrors();
}
} catch (\Exception $exception) {
// Handled below
} catch (\Throwable $exception) {
// Handled below
}
if ($error && $error['type'] &= E_PARSE | E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR) {
// Let's not throw anymore but keep logging
$handler->throwAt(0, true);
$trace = isset($error['backtrace']) ? $error['backtrace'] : null;
if (0 === strpos($error['message'], 'Allowed memory') || 0 === strpos($error['message'], 'Out of memory')) {
$exception = new OutOfMemoryException($handler->levels[$error['type']].': '.$error['message'], 0, $error['type'], $error['file'], $error['line'], 2, false, $trace);
} else {
$exception = new FatalErrorException($handler->levels[$error['type']].': '.$error['message'], 0, $error['type'], $error['file'], $error['line'], 2, true, $trace);
}
} elseif (!isset($exception)) {
return;
}
try {
$handler->handleException($exception, $error);
} catch (FatalErrorException $e) {
// Ignore this re-throw
}
}
/**
* Configures the error handler for delayed handling.
* Ensures also that non-catchable fatal errors are never silenced.
*
* As shown by http://bugs.php.net/42098 and http://bugs.php.net/60724
* PHP has a compile stage where it behaves unusually. To workaround it,
* we plug an error handler that only stacks errors for later.
*
* The most important feature of this is to prevent
* autoloading until unstackErrors() is called.
*/
public static function stackErrors()
{
self::$stackedErrorLevels[] = error_reporting(error_reporting() | E_PARSE | E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR);
}
/**
* Unstacks stacked errors and forwards to the logger.
*/
public static function unstackErrors()
{
$level = array_pop(self::$stackedErrorLevels);
if (null !== $level) {
$e = error_reporting($level);
if ($e !== ($level | E_PARSE | E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR)) {
// If the user changed the error level, do not overwrite it
error_reporting($e);
}
}
if (empty(self::$stackedErrorLevels)) {
$errors = self::$stackedErrors;
self::$stackedErrors = array();
foreach ($errors as $e) {
$e[0]->log($e[1], $e[2], $e[3]);
}
}
}
/**
* Gets the fatal error handlers.
*
* Override this method if you want to define more fatal error handlers.
*
* @return FatalErrorHandlerInterface[] An array of FatalErrorHandlerInterface
*/
protected function getFatalErrorHandlers()
{
return array(
new UndefinedFunctionFatalErrorHandler(),
new UndefinedMethodFatalErrorHandler(),
new ClassNotFoundFatalErrorHandler(),
);
}
}
@@ -0,0 +1,33 @@
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Debug\Exception;
/**
* Class (or Trait or Interface) Not Found Exception.
*
* @author Konstanton Myakshin <koc-dp@yandex.ru>
*/
class ClassNotFoundException extends FatalErrorException
{
public function __construct($message, \ErrorException $previous)
{
parent::__construct(
$message,
$previous->getCode(),
$previous->getSeverity(),
$previous->getFile(),
$previous->getLine(),
$previous->getPrevious()
);
$this->setTrace($previous->getTrace());
}
}
@@ -0,0 +1,36 @@
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Debug\Exception;
/**
* Error Exception with Variable Context.
*
* @author Christian Sciberras <uuf6429@gmail.com>
*/
class ContextErrorException extends \ErrorException
{
private $context = array();
public function __construct($message, $code, $severity, $filename, $lineno, $context = array())
{
parent::__construct($message, $code, $severity, $filename, $lineno);
$this->context = $context;
}
/**
* @return array Array of variables that existed when the exception occurred
*/
public function getContext()
{
return $this->context;
}
}
+82
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Debug\Exception;
/**
* Fatal Error Exception.
*
* @author Konstanton Myakshin <koc-dp@yandex.ru>
*/
class FatalErrorException extends \ErrorException
{
public function __construct($message, $code, $severity, $filename, $lineno, $traceOffset = null, $traceArgs = true, array $trace = null)
{
parent::__construct($message, $code, $severity, $filename, $lineno);
if (null !== $trace) {
if (!$traceArgs) {
foreach ($trace as &$frame) {
unset($frame['args'], $frame['this'], $frame);
}
}
$this->setTrace($trace);
} elseif (null !== $traceOffset) {
if (function_exists('xdebug_get_function_stack')) {
$trace = xdebug_get_function_stack();
if (0 < $traceOffset) {
array_splice($trace, -$traceOffset);
}
foreach ($trace as &$frame) {
if (!isset($frame['type'])) {
// XDebug pre 2.1.1 doesn't currently set the call type key http://bugs.xdebug.org/view.php?id=695
if (isset($frame['class'])) {
$frame['type'] = '::';
}
} elseif ('dynamic' === $frame['type']) {
$frame['type'] = '->';
} elseif ('static' === $frame['type']) {
$frame['type'] = '::';
}
// XDebug also has a different name for the parameters array
if (!$traceArgs) {
unset($frame['params'], $frame['args']);
} elseif (isset($frame['params']) && !isset($frame['args'])) {
$frame['args'] = $frame['params'];
unset($frame['params']);
}
}
unset($frame);
$trace = array_reverse($trace);
} elseif (function_exists('symfony_debug_backtrace')) {
$trace = symfony_debug_backtrace();
if (0 < $traceOffset) {
array_splice($trace, 0, $traceOffset);
}
} else {
$trace = array();
}
$this->setTrace($trace);
}
}
protected function setTrace($trace)
{
$traceReflector = new \ReflectionProperty('Exception', 'trace');
$traceReflector->setAccessible(true);
$traceReflector->setValue($this, $trace);
}
}
+44
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Debug\Exception;
/**
* Fatal Throwable Error.
*
* @author Nicolas Grekas <p@tchwork.com>
*/
class FatalThrowableError extends FatalErrorException
{
public function __construct(\Throwable $e)
{
if ($e instanceof \ParseError) {
$message = 'Parse error: '.$e->getMessage();
$severity = E_PARSE;
} elseif ($e instanceof \TypeError) {
$message = 'Type error: '.$e->getMessage();
$severity = E_RECOVERABLE_ERROR;
} else {
$message = $e->getMessage();
$severity = E_ERROR;
}
\ErrorException::__construct(
$message,
$e->getCode(),
$severity,
$e->getFile(),
$e->getLine()
);
$this->setTrace($e->getTrace());
}
}
+256
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Debug\Exception;
use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;
/**
* FlattenException wraps a PHP Exception to be able to serialize it.
*
* Basically, this class removes all objects from the trace.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class FlattenException
{
private $message;
private $code;
private $previous;
private $trace;
private $class;
private $statusCode;
private $headers;
private $file;
private $line;
public static function create(\Exception $exception, $statusCode = null, array $headers = array())
{
$e = new static();
$e->setMessage($exception->getMessage());
$e->setCode($exception->getCode());
if ($exception instanceof HttpExceptionInterface) {
$statusCode = $exception->getStatusCode();
$headers = array_merge($headers, $exception->getHeaders());
}
if (null === $statusCode) {
$statusCode = 500;
}
$e->setStatusCode($statusCode);
$e->setHeaders($headers);
$e->setTraceFromException($exception);
$e->setClass(get_class($exception));
$e->setFile($exception->getFile());
$e->setLine($exception->getLine());
$previous = $exception->getPrevious();
if ($previous instanceof \Exception) {
$e->setPrevious(static::create($previous));
} elseif ($previous instanceof \Throwable) {
$e->setPrevious(static::create(new FatalThrowableError($previous)));
}
return $e;
}
public function toArray()
{
$exceptions = array();
foreach (array_merge(array($this), $this->getAllPrevious()) as $exception) {
$exceptions[] = array(
'message' => $exception->getMessage(),
'class' => $exception->getClass(),
'trace' => $exception->getTrace(),
);
}
return $exceptions;
}
public function getStatusCode()
{
return $this->statusCode;
}
public function setStatusCode($code)
{
$this->statusCode = $code;
}
public function getHeaders()
{
return $this->headers;
}
public function setHeaders(array $headers)
{
$this->headers = $headers;
}
public function getClass()
{
return $this->class;
}
public function setClass($class)
{
$this->class = $class;
}
public function getFile()
{
return $this->file;
}
public function setFile($file)
{
$this->file = $file;
}
public function getLine()
{
return $this->line;
}
public function setLine($line)
{
$this->line = $line;
}
public function getMessage()
{
return $this->message;
}
public function setMessage($message)
{
$this->message = $message;
}
public function getCode()
{
return $this->code;
}
public function setCode($code)
{
$this->code = $code;
}
public function getPrevious()
{
return $this->previous;
}
public function setPrevious(FlattenException $previous)
{
$this->previous = $previous;
}
public function getAllPrevious()
{
$exceptions = array();
$e = $this;
while ($e = $e->getPrevious()) {
$exceptions[] = $e;
}
return $exceptions;
}
public function getTrace()
{
return $this->trace;
}
public function setTraceFromException(\Exception $exception)
{
$this->setTrace($exception->getTrace(), $exception->getFile(), $exception->getLine());
}
public function setTrace($trace, $file, $line)
{
$this->trace = array();
$this->trace[] = array(
'namespace' => '',
'short_class' => '',
'class' => '',
'type' => '',
'function' => '',
'file' => $file,
'line' => $line,
'args' => array(),
);
foreach ($trace as $entry) {
$class = '';
$namespace = '';
if (isset($entry['class'])) {
$parts = explode('\\', $entry['class']);
$class = array_pop($parts);
$namespace = implode('\\', $parts);
}
$this->trace[] = array(
'namespace' => $namespace,
'short_class' => $class,
'class' => isset($entry['class']) ? $entry['class'] : '',
'type' => isset($entry['type']) ? $entry['type'] : '',
'function' => isset($entry['function']) ? $entry['function'] : null,
'file' => isset($entry['file']) ? $entry['file'] : null,
'line' => isset($entry['line']) ? $entry['line'] : null,
'args' => isset($entry['args']) ? $this->flattenArgs($entry['args']) : array(),
);
}
}
private function flattenArgs($args, $level = 0, &$count = 0)
{
$result = array();
foreach ($args as $key => $value) {
if (++$count > 1e4) {
return array('array', '*SKIPPED over 10000 entries*');
}
if (is_object($value)) {
$result[$key] = array('object', get_class($value));
} elseif (is_array($value)) {
if ($level > 10) {
$result[$key] = array('array', '*DEEP NESTED ARRAY*');
} else {
$result[$key] = array('array', $this->flattenArgs($value, $level + 1, $count));
}
} elseif (null === $value) {
$result[$key] = array('null', null);
} elseif (is_bool($value)) {
$result[$key] = array('boolean', $value);
} elseif (is_resource($value)) {
$result[$key] = array('resource', get_resource_type($value));
} elseif ($value instanceof \__PHP_Incomplete_Class) {
// Special case of object, is_object will return false
$result[$key] = array('incomplete-object', $this->getClassNameFromIncomplete($value));
} else {
$result[$key] = array('string', (string) $value);
}
}
return $result;
}
private function getClassNameFromIncomplete(\__PHP_Incomplete_Class $value)
{
$array = new \ArrayObject($value);
return $array['__PHP_Incomplete_Class_Name'];
}
}
+21
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Debug\Exception;
/**
* Out of memory exception.
*
* @author Nicolas Grekas <p@tchwork.com>
*/
class OutOfMemoryException extends FatalErrorException
{
}
@@ -0,0 +1,33 @@
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Debug\Exception;
/**
* Undefined Function Exception.
*
* @author Konstanton Myakshin <koc-dp@yandex.ru>
*/
class UndefinedFunctionException extends FatalErrorException
{
public function __construct($message, \ErrorException $previous)
{
parent::__construct(
$message,
$previous->getCode(),
$previous->getSeverity(),
$previous->getFile(),
$previous->getLine(),
$previous->getPrevious()
);
$this->setTrace($previous->getTrace());
}
}
@@ -0,0 +1,33 @@
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Debug\Exception;
/**
* Undefined Method Exception.
*
* @author Grégoire Pineau <lyrixx@lyrixx.info>
*/
class UndefinedMethodException extends FatalErrorException
{
public function __construct($message, \ErrorException $previous)
{
parent::__construct(
$message,
$previous->getCode(),
$previous->getSeverity(),
$previous->getFile(),
$previous->getLine(),
$previous->getPrevious()
);
$this->setTrace($previous->getTrace());
}
}
+414
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@@ -0,0 +1,414 @@
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Debug;
use Symfony\Component\Debug\Exception\FlattenException;
use Symfony\Component\Debug\Exception\OutOfMemoryException;
/**
* ExceptionHandler converts an exception to a Response object.
*
* It is mostly useful in debug mode to replace the default PHP/XDebug
* output with something prettier and more useful.
*
* As this class is mainly used during Kernel boot, where nothing is yet
* available, the Response content is always HTML.
*
* @author Fabien Potencier <fabien@symfony.com>
* @author Nicolas Grekas <p@tchwork.com>
*/
class ExceptionHandler
{
private $debug;
private $charset;
private $handler;
private $caughtBuffer;
private $caughtLength;
private $fileLinkFormat;
public function __construct($debug = true, $charset = null, $fileLinkFormat = null)
{
$this->debug = $debug;
$this->charset = $charset ?: ini_get('default_charset') ?: 'UTF-8';
$this->fileLinkFormat = $fileLinkFormat ?: ini_get('xdebug.file_link_format') ?: get_cfg_var('xdebug.file_link_format');
}
/**
* Registers the exception handler.
*
* @param bool $debug Enable/disable debug mode, where the stack trace is displayed
* @param string|null $charset The charset used by exception messages
* @param string|null $fileLinkFormat The IDE link template
*
* @return ExceptionHandler The registered exception handler
*/
public static function register($debug = true, $charset = null, $fileLinkFormat = null)
{
$handler = new static($debug, $charset, $fileLinkFormat);
$prev = set_exception_handler(array($handler, 'handle'));
if (is_array($prev) && $prev[0] instanceof ErrorHandler) {
restore_exception_handler();
$prev[0]->setExceptionHandler(array($handler, 'handle'));
}
return $handler;
}
/**
* Sets a user exception handler.
*
* @param callable $handler An handler that will be called on Exception
*
* @return callable|null The previous exception handler if any
*/
public function setHandler(callable $handler = null)
{
$old = $this->handler;
$this->handler = $handler;
return $old;
}
/**
* Sets the format for links to source files.
*
* @param string $format The format for links to source files
*
* @return string The previous file link format
*/
public function setFileLinkFormat($format)
{
$old = $this->fileLinkFormat;
$this->fileLinkFormat = $format;
return $old;
}
/**
* Sends a response for the given Exception.
*
* To be as fail-safe as possible, the exception is first handled
* by our simple exception handler, then by the user exception handler.
* The latter takes precedence and any output from the former is cancelled,
* if and only if nothing bad happens in this handling path.
*/
public function handle(\Exception $exception)
{
if (null === $this->handler || $exception instanceof OutOfMemoryException) {
$this->sendPhpResponse($exception);
return;
}
$caughtLength = $this->caughtLength = 0;
ob_start(function ($buffer) {
$this->caughtBuffer = $buffer;
return '';
});
$this->sendPhpResponse($exception);
while (null === $this->caughtBuffer && ob_end_flush()) {
// Empty loop, everything is in the condition
}
if (isset($this->caughtBuffer[0])) {
ob_start(function ($buffer) {
if ($this->caughtLength) {
// use substr_replace() instead of substr() for mbstring overloading resistance
$cleanBuffer = substr_replace($buffer, '', 0, $this->caughtLength);
if (isset($cleanBuffer[0])) {
$buffer = $cleanBuffer;
}
}
return $buffer;
});
echo $this->caughtBuffer;
$caughtLength = ob_get_length();
}
$this->caughtBuffer = null;
try {
call_user_func($this->handler, $exception);
$this->caughtLength = $caughtLength;
} catch (\Exception $e) {
if (!$caughtLength) {
// All handlers failed. Let PHP handle that now.
throw $exception;
}
}
}
/**
* Sends the error associated with the given Exception as a plain PHP response.
*
* This method uses plain PHP functions like header() and echo to output
* the response.
*
* @param \Exception|FlattenException $exception An \Exception or FlattenException instance
*/
public function sendPhpResponse($exception)
{
if (!$exception instanceof FlattenException) {
$exception = FlattenException::create($exception);
}
if (!headers_sent()) {
header(sprintf('HTTP/1.0 %s', $exception->getStatusCode()));
foreach ($exception->getHeaders() as $name => $value) {
header($name.': '.$value, false);
}
header('Content-Type: text/html; charset='.$this->charset);
}
echo $this->decorate($this->getContent($exception), $this->getStylesheet($exception));
}
/**
* Gets the full HTML content associated with the given exception.
*
* @param \Exception|FlattenException $exception An \Exception or FlattenException instance
*
* @return string The HTML content as a string
*/
public function getHtml($exception)
{
if (!$exception instanceof FlattenException) {
$exception = FlattenException::create($exception);
}
return $this->decorate($this->getContent($exception), $this->getStylesheet($exception));
}
/**
* Gets the HTML content associated with the given exception.
*
* @param FlattenException $exception A FlattenException instance
*
* @return string The content as a string
*/
public function getContent(FlattenException $exception)
{
switch ($exception->getStatusCode()) {
case 404:
$title = 'Sorry, the page you are looking for could not be found.';
break;
default:
$title = 'Whoops, looks like something went wrong.';
}
$content = '';
if ($this->debug) {
try {
$count = count($exception->getAllPrevious());
$total = $count + 1;
foreach ($exception->toArray() as $position => $e) {
$ind = $count - $position + 1;
$class = $this->formatClass($e['class']);
$message = nl2br($this->escapeHtml($e['message']));
$content .= sprintf(<<<'EOF'
<h2 class="block_exception clear_fix">
<span class="exception_counter">%d/%d</span>
<span class="exception_title">%s%s:</span>
<span class="exception_message">%s</span>
</h2>
<div class="block">
<ol class="traces list_exception">
EOF
, $ind, $total, $class, $this->formatPath($e['trace'][0]['file'], $e['trace'][0]['line']), $message);
foreach ($e['trace'] as $trace) {
$content .= ' <li>';
if ($trace['function']) {
$content .= sprintf('at %s%s%s(%s)', $this->formatClass($trace['class']), $trace['type'], $trace['function'], $this->formatArgs($trace['args']));
}
if (isset($trace['file']) && isset($trace['line'])) {
$content .= $this->formatPath($trace['file'], $trace['line']);
}
$content .= "</li>\n";
}
$content .= " </ol>\n</div>\n";
}
} catch (\Exception $e) {
// something nasty happened and we cannot throw an exception anymore
if ($this->debug) {
$title = sprintf('Exception thrown when handling an exception (%s: %s)', get_class($e), $this->escapeHtml($e->getMessage()));
} else {
$title = 'Whoops, looks like something went wrong.';
}
}
}
return <<<EOF
<div id="sf-resetcontent" class="sf-reset">
<h1>$title</h1>
$content
</div>
EOF;
}
/**
* Gets the stylesheet associated with the given exception.
*
* @param FlattenException $exception A FlattenException instance
*
* @return string The stylesheet as a string
*/
public function getStylesheet(FlattenException $exception)
{
return <<<'EOF'
.sf-reset { font: 11px Verdana, Arial, sans-serif; color: #333 }
.sf-reset .clear { clear:both; height:0; font-size:0; line-height:0; }
.sf-reset .clear_fix:after { display:block; height:0; clear:both; visibility:hidden; }
.sf-reset .clear_fix { display:inline-block; }
.sf-reset * html .clear_fix { height:1%; }
.sf-reset .clear_fix { display:block; }
.sf-reset, .sf-reset .block { margin: auto }
.sf-reset abbr { border-bottom: 1px dotted #000; cursor: help; }
.sf-reset p { font-size:14px; line-height:20px; color:#868686; padding-bottom:20px }
.sf-reset strong { font-weight:bold; }
.sf-reset a { color:#6c6159; cursor: default; }
.sf-reset a img { border:none; }
.sf-reset a:hover { text-decoration:underline; }
.sf-reset em { font-style:italic; }
.sf-reset h1, .sf-reset h2 { font: 20px Georgia, "Times New Roman", Times, serif }
.sf-reset .exception_counter { background-color: #fff; color: #333; padding: 6px; float: left; margin-right: 10px; float: left; display: block; }
.sf-reset .exception_title { margin-left: 3em; margin-bottom: 0.7em; display: block; }
.sf-reset .exception_message { margin-left: 3em; display: block; }
.sf-reset .traces li { font-size:12px; padding: 2px 4px; list-style-type:decimal; margin-left:20px; }
.sf-reset .block { background-color:#FFFFFF; padding:10px 28px; margin-bottom:20px;
-webkit-border-bottom-right-radius: 16px;
-webkit-border-bottom-left-radius: 16px;
-moz-border-radius-bottomright: 16px;
-moz-border-radius-bottomleft: 16px;
border-bottom-right-radius: 16px;
border-bottom-left-radius: 16px;
border-bottom:1px solid #ccc;
border-right:1px solid #ccc;
border-left:1px solid #ccc;
}
.sf-reset .block_exception { background-color:#ddd; color: #333; padding:20px;
-webkit-border-top-left-radius: 16px;
-webkit-border-top-right-radius: 16px;
-moz-border-radius-topleft: 16px;
-moz-border-radius-topright: 16px;
border-top-left-radius: 16px;
border-top-right-radius: 16px;
border-top:1px solid #ccc;
border-right:1px solid #ccc;
border-left:1px solid #ccc;
overflow: hidden;
word-wrap: break-word;
}
.sf-reset a { background:none; color:#868686; text-decoration:none; }
.sf-reset a:hover { background:none; color:#313131; text-decoration:underline; }
.sf-reset ol { padding: 10px 0; }
.sf-reset h1 { background-color:#FFFFFF; padding: 15px 28px; margin-bottom: 20px;
-webkit-border-radius: 10px;
-moz-border-radius: 10px;
border-radius: 10px;
border: 1px solid #ccc;
}
EOF;
}
private function decorate($content, $css)
{
return <<<EOF
<!DOCTYPE html>
<html>
<head>
<meta charset="{$this->charset}" />
<meta name="robots" content="noindex,nofollow" />
<style>
/* Copyright (c) 2010, Yahoo! Inc. All rights reserved. Code licensed under the BSD License: http://developer.yahoo.com/yui/license.html */
html{color:#000;background:#FFF;}body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,code,form,fieldset,legend,input,textarea,p,blockquote,th,td{margin:0;padding:0;}table{border-collapse:collapse;border-spacing:0;}fieldset,img{border:0;}address,caption,cite,code,dfn,em,strong,th,var{font-style:normal;font-weight:normal;}li{list-style:none;}caption,th{text-align:left;}h1,h2,h3,h4,h5,h6{font-size:100%;font-weight:normal;}q:before,q:after{content:'';}abbr,acronym{border:0;font-variant:normal;}sup{vertical-align:text-top;}sub{vertical-align:text-bottom;}input,textarea,select{font-family:inherit;font-size:inherit;font-weight:inherit;}input,textarea,select{*font-size:100%;}legend{color:#000;}
html { background: #eee; padding: 10px }
img { border: 0; }
#sf-resetcontent { width:970px; margin:0 auto; }
$css
</style>
</head>
<body>
$content
</body>
</html>
EOF;
}
private function formatClass($class)
{
$parts = explode('\\', $class);
return sprintf('<abbr title="%s">%s</abbr>', $class, array_pop($parts));
}
private function formatPath($path, $line)
{
$path = $this->escapeHtml($path);
$file = preg_match('#[^/\\\\]*$#', $path, $file) ? $file[0] : $path;
if ($linkFormat = $this->fileLinkFormat) {
$link = strtr($this->escapeHtml($linkFormat), array('%f' => $path, '%l' => (int) $line));
return sprintf(' in <a href="%s" title="Go to source">%s line %d</a>', $link, $file, $line);
}
return sprintf(' in <a title="%s line %3$d" ondblclick="var f=this.innerHTML;this.innerHTML=this.title;this.title=f;">%s line %d</a>', $path, $file, $line);
}
/**
* Formats an array as a string.
*
* @param array $args The argument array
*
* @return string
*/
private function formatArgs(array $args)
{
$result = array();
foreach ($args as $key => $item) {
if ('object' === $item[0]) {
$formattedValue = sprintf('<em>object</em>(%s)', $this->formatClass($item[1]));
} elseif ('array' === $item[0]) {
$formattedValue = sprintf('<em>array</em>(%s)', is_array($item[1]) ? $this->formatArgs($item[1]) : $item[1]);
} elseif ('string' === $item[0]) {
$formattedValue = sprintf("'%s'", $this->escapeHtml($item[1]));
} elseif ('null' === $item[0]) {
$formattedValue = '<em>null</em>';
} elseif ('boolean' === $item[0]) {
$formattedValue = '<em>'.strtolower(var_export($item[1], true)).'</em>';
} elseif ('resource' === $item[0]) {
$formattedValue = '<em>resource</em>';
} else {
$formattedValue = str_replace("\n", '', var_export($this->escapeHtml((string) $item[1]), true));
}
$result[] = is_int($key) ? $formattedValue : sprintf("'%s' => %s", $key, $formattedValue);
}
return implode(', ', $result);
}
/**
* HTML-encodes a string.
*/
private function escapeHtml($str)
{
return htmlspecialchars($str, ENT_QUOTES | ENT_SUBSTITUTE, $this->charset);
}
}
@@ -0,0 +1,206 @@
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Debug\FatalErrorHandler;
use Symfony\Component\Debug\Exception\ClassNotFoundException;
use Symfony\Component\Debug\Exception\FatalErrorException;
use Symfony\Component\Debug\DebugClassLoader;
use Composer\Autoload\ClassLoader as ComposerClassLoader;
use Symfony\Component\ClassLoader\ClassLoader as SymfonyClassLoader;
/**
* ErrorHandler for classes that do not exist.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class ClassNotFoundFatalErrorHandler implements FatalErrorHandlerInterface
{
/**
* {@inheritdoc}
*/
public function handleError(array $error, FatalErrorException $exception)
{
$messageLen = strlen($error['message']);
$notFoundSuffix = '\' not found';
$notFoundSuffixLen = strlen($notFoundSuffix);
if ($notFoundSuffixLen > $messageLen) {
return;
}
if (0 !== substr_compare($error['message'], $notFoundSuffix, -$notFoundSuffixLen)) {
return;
}
foreach (array('class', 'interface', 'trait') as $typeName) {
$prefix = ucfirst($typeName).' \'';
$prefixLen = strlen($prefix);
if (0 !== strpos($error['message'], $prefix)) {
continue;
}
$fullyQualifiedClassName = substr($error['message'], $prefixLen, -$notFoundSuffixLen);
if (false !== $namespaceSeparatorIndex = strrpos($fullyQualifiedClassName, '\\')) {
$className = substr($fullyQualifiedClassName, $namespaceSeparatorIndex + 1);
$namespacePrefix = substr($fullyQualifiedClassName, 0, $namespaceSeparatorIndex);
$message = sprintf('Attempted to load %s "%s" from namespace "%s".', $typeName, $className, $namespacePrefix);
$tail = ' for another namespace?';
} else {
$className = $fullyQualifiedClassName;
$message = sprintf('Attempted to load %s "%s" from the global namespace.', $typeName, $className);
$tail = '?';
}
if ($candidates = $this->getClassCandidates($className)) {
$tail = array_pop($candidates).'"?';
if ($candidates) {
$tail = ' for e.g. "'.implode('", "', $candidates).'" or "'.$tail;
} else {
$tail = ' for "'.$tail;
}
}
$message .= "\nDid you forget a \"use\" statement".$tail;
return new ClassNotFoundException($message, $exception);
}
}
/**
* Tries to guess the full namespace for a given class name.
*
* By default, it looks for PSR-0 and PSR-4 classes registered via a Symfony or a Composer
* autoloader (that should cover all common cases).
*
* @param string $class A class name (without its namespace)
*
* @return array An array of possible fully qualified class names
*/
private function getClassCandidates($class)
{
if (!is_array($functions = spl_autoload_functions())) {
return array();
}
// find Symfony and Composer autoloaders
$classes = array();
foreach ($functions as $function) {
if (!is_array($function)) {
continue;
}
// get class loaders wrapped by DebugClassLoader
if ($function[0] instanceof DebugClassLoader) {
$function = $function[0]->getClassLoader();
if (!is_array($function)) {
continue;
}
}
if ($function[0] instanceof ComposerClassLoader || $function[0] instanceof SymfonyClassLoader) {
foreach ($function[0]->getPrefixes() as $prefix => $paths) {
foreach ($paths as $path) {
$classes = array_merge($classes, $this->findClassInPath($path, $class, $prefix));
}
}
}
if ($function[0] instanceof ComposerClassLoader) {
foreach ($function[0]->getPrefixesPsr4() as $prefix => $paths) {
foreach ($paths as $path) {
$classes = array_merge($classes, $this->findClassInPath($path, $class, $prefix));
}
}
}
}
return array_unique($classes);
}
/**
* @param string $path
* @param string $class
* @param string $prefix
*
* @return array
*/
private function findClassInPath($path, $class, $prefix)
{
if (!$path = realpath($path.'/'.strtr($prefix, '\\_', '//')) ?: realpath($path.'/'.dirname(strtr($prefix, '\\_', '//'))) ?: realpath($path)) {
return array();
}
$classes = array();
$filename = $class.'.php';
foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($path, \RecursiveDirectoryIterator::SKIP_DOTS), \RecursiveIteratorIterator::LEAVES_ONLY) as $file) {
if ($filename == $file->getFileName() && $class = $this->convertFileToClass($path, $file->getPathName(), $prefix)) {
$classes[] = $class;
}
}
return $classes;
}
/**
* @param string $path
* @param string $file
* @param string $prefix
*
* @return string|null
*/
private function convertFileToClass($path, $file, $prefix)
{
$candidates = array(
// namespaced class
$namespacedClass = str_replace(array($path.DIRECTORY_SEPARATOR, '.php', '/'), array('', '', '\\'), $file),
// namespaced class (with target dir)
$prefix.$namespacedClass,
// namespaced class (with target dir and separator)
$prefix.'\\'.$namespacedClass,
// PEAR class
str_replace('\\', '_', $namespacedClass),
// PEAR class (with target dir)
str_replace('\\', '_', $prefix.$namespacedClass),
// PEAR class (with target dir and separator)
str_replace('\\', '_', $prefix.'\\'.$namespacedClass),
);
if ($prefix) {
$candidates = array_filter($candidates, function ($candidate) use ($prefix) {return 0 === strpos($candidate, $prefix);});
}
// We cannot use the autoloader here as most of them use require; but if the class
// is not found, the new autoloader call will require the file again leading to a
// "cannot redeclare class" error.
foreach ($candidates as $candidate) {
if ($this->classExists($candidate)) {
return $candidate;
}
}
require_once $file;
foreach ($candidates as $candidate) {
if ($this->classExists($candidate)) {
return $candidate;
}
}
}
/**
* @param string $class
*
* @return bool
*/
private function classExists($class)
{
return class_exists($class, false) || interface_exists($class, false) || trait_exists($class, false);
}
}
@@ -0,0 +1,32 @@
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Debug\FatalErrorHandler;
use Symfony\Component\Debug\Exception\FatalErrorException;
/**
* Attempts to convert fatal errors to exceptions.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
interface FatalErrorHandlerInterface
{
/**
* Attempts to convert an error into an exception.
*
* @param array $error An array as returned by error_get_last()
* @param FatalErrorException $exception A FatalErrorException instance
*
* @return FatalErrorException|null A FatalErrorException instance if the class is able to convert the error, null otherwise
*/
public function handleError(array $error, FatalErrorException $exception);
}
@@ -0,0 +1,84 @@
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Debug\FatalErrorHandler;
use Symfony\Component\Debug\Exception\UndefinedFunctionException;
use Symfony\Component\Debug\Exception\FatalErrorException;
/**
* ErrorHandler for undefined functions.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class UndefinedFunctionFatalErrorHandler implements FatalErrorHandlerInterface
{
/**
* {@inheritdoc}
*/
public function handleError(array $error, FatalErrorException $exception)
{
$messageLen = strlen($error['message']);
$notFoundSuffix = '()';
$notFoundSuffixLen = strlen($notFoundSuffix);
if ($notFoundSuffixLen > $messageLen) {
return;
}
if (0 !== substr_compare($error['message'], $notFoundSuffix, -$notFoundSuffixLen)) {
return;
}
$prefix = 'Call to undefined function ';
$prefixLen = strlen($prefix);
if (0 !== strpos($error['message'], $prefix)) {
return;
}
$fullyQualifiedFunctionName = substr($error['message'], $prefixLen, -$notFoundSuffixLen);
if (false !== $namespaceSeparatorIndex = strrpos($fullyQualifiedFunctionName, '\\')) {
$functionName = substr($fullyQualifiedFunctionName, $namespaceSeparatorIndex + 1);
$namespacePrefix = substr($fullyQualifiedFunctionName, 0, $namespaceSeparatorIndex);
$message = sprintf('Attempted to call function "%s" from namespace "%s".', $functionName, $namespacePrefix);
} else {
$functionName = $fullyQualifiedFunctionName;
$message = sprintf('Attempted to call function "%s" from the global namespace.', $functionName);
}
$candidates = array();
foreach (get_defined_functions() as $type => $definedFunctionNames) {
foreach ($definedFunctionNames as $definedFunctionName) {
if (false !== $namespaceSeparatorIndex = strrpos($definedFunctionName, '\\')) {
$definedFunctionNameBasename = substr($definedFunctionName, $namespaceSeparatorIndex + 1);
} else {
$definedFunctionNameBasename = $definedFunctionName;
}
if ($definedFunctionNameBasename === $functionName) {
$candidates[] = '\\'.$definedFunctionName;
}
}
}
if ($candidates) {
sort($candidates);
$last = array_pop($candidates).'"?';
if ($candidates) {
$candidates = 'e.g. "'.implode('", "', $candidates).'" or "'.$last;
} else {
$candidates = '"'.$last;
}
$message .= "\nDid you mean to call ".$candidates;
}
return new UndefinedFunctionException($message, $exception);
}
}
@@ -0,0 +1,60 @@
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Debug\FatalErrorHandler;
use Symfony\Component\Debug\Exception\FatalErrorException;
use Symfony\Component\Debug\Exception\UndefinedMethodException;
/**
* ErrorHandler for undefined methods.
*
* @author Grégoire Pineau <lyrixx@lyrixx.info>
*/
class UndefinedMethodFatalErrorHandler implements FatalErrorHandlerInterface
{
/**
* {@inheritdoc}
*/
public function handleError(array $error, FatalErrorException $exception)
{
preg_match('/^Call to undefined method (.*)::(.*)\(\)$/', $error['message'], $matches);
if (!$matches) {
return;
}
$className = $matches[1];
$methodName = $matches[2];
$message = sprintf('Attempted to call an undefined method named "%s" of class "%s".', $methodName, $className);
$candidates = array();
foreach (get_class_methods($className) as $definedMethodName) {
$lev = levenshtein($methodName, $definedMethodName);
if ($lev <= strlen($methodName) / 3 || false !== strpos($definedMethodName, $methodName)) {
$candidates[] = $definedMethodName;
}
}
if ($candidates) {
sort($candidates);
$last = array_pop($candidates).'"?';
if ($candidates) {
$candidates = 'e.g. "'.implode('", "', $candidates).'" or "'.$last;
} else {
$candidates = '"'.$last;
}
$message .= "\nDid you mean to call ".$candidates;
}
return new UndefinedMethodException($message, $exception);
}
}
+19
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@@ -0,0 +1,19 @@
Copyright (c) 2004-2016 Fabien Potencier
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is furnished
to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
+13
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@@ -0,0 +1,13 @@
Debug Component
===============
The Debug component provides tools to ease debugging PHP code.
Resources
---------
* [Documentation](https://symfony.com/doc/current/components/debug/index.html)
* [Contributing](https://symfony.com/doc/current/contributing/index.html)
* [Report issues](https://github.com/symfony/symfony/issues) and
[send Pull Requests](https://github.com/symfony/symfony/pulls)
in the [main Symfony repository](https://github.com/symfony/symfony)