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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\HttpKernel;
use Symfony\Component\DependencyInjection\Dumper\Preloader;
use Symfony\Component\DependencyInjection\Kernel\AbstractKernel;
use Symfony\Component\DependencyInjection\Kernel\KernelTrait;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Bundle\BundleAdapter;
use Symfony\Component\HttpKernel\Bundle\BundleInterface;
use Symfony\Component\HttpKernel\CacheWarmer\WarmableInterface;
/**
* The Kernel is the heart of the Symfony system.
*
* It manages an environment made of bundles.
*
* Environment names must always start with a letter and
* they must only contain letters and numbers.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
abstract class Kernel extends AbstractKernel implements KernelInterface, RebootableInterface, TerminableInterface
{
use KernelTrait {
registerBundles as public;
registerContainerConfiguration as public;
initializeBundles as protected doInitializeBundles;
initializeContainer as protected doInitializeContainer;
getKernelParameters as private doGetKernelParameters;
}
private ?string $warmupDir = null;
private int $requestStackSize = 0;
private bool $resetServices = false;
private bool $handlingHttpCache = false;
public const VERSION = '8.1.1';
public const VERSION_ID = 80101;
public const MAJOR_VERSION = 8;
public const MINOR_VERSION = 1;
public const RELEASE_VERSION = 1;
public const EXTRA_VERSION = '';
public const END_OF_MAINTENANCE = '01/2027';
public const END_OF_LIFE = '01/2027';
public function __clone()
{
parent::__clone();
$this->requestStackSize = 0;
$this->resetServices = false;
$this->handlingHttpCache = false;
}
public function boot(): void
{
if ($this->booted) {
if (!$this->requestStackSize && $this->resetServices) {
if ($this->container->has('services_resetter')) {
$this->container->get('services_resetter')->reset();
}
$this->resetServices = false;
if ($this->debug) {
$this->startTime = microtime(true);
}
}
return;
}
if (!$this->container) {
$this->preBoot();
}
foreach ($this->getBundles() as $bundle) {
$bundle->setContainer($this->container);
$bundle->boot();
}
$this->booted = true;
}
public function reboot(?string $warmupDir): void
{
$this->shutdown();
$this->warmupDir = $warmupDir;
$this->boot();
}
public function terminate(Request $request, Response $response): void
{
if (!$this->booted) {
return;
}
if ($this->getHttpKernel() instanceof TerminableInterface) {
$this->getHttpKernel()->terminate($request, $response);
}
}
public function shutdown(): void
{
parent::shutdown();
$this->requestStackSize = 0;
$this->resetServices = false;
}
public function handle(Request $request, int $type = HttpKernelInterface::MAIN_REQUEST, bool $catch = true): Response
{
if (!$this->container) {
$this->preBoot();
}
if (HttpKernelInterface::MAIN_REQUEST === $type && !$this->handlingHttpCache && $this->container->has('http_cache')) {
$this->handlingHttpCache = true;
try {
return $this->container->get('http_cache')->handle($request, $type, $catch);
} finally {
$this->handlingHttpCache = false;
$this->resetServices = true;
}
}
$this->boot();
++$this->requestStackSize;
if (!$this->handlingHttpCache) {
$this->resetServices = true;
}
try {
return $this->getHttpKernel()->handle($request, $type, $catch);
} finally {
--$this->requestStackSize;
}
}
protected function getHttpKernel(): HttpKernelInterface
{
return $this->container->get('http_kernel');
}
public function getBundle(string $name): BundleInterface
{
if (!isset($this->bundles[$name])) {
throw new \InvalidArgumentException(\sprintf('Bundle "%s" does not exist or it is not enabled. Maybe you forgot to add it in the "registerBundles()" method of your "%s.php" file?', $name, get_debug_type($this)));
}
return $this->bundles[$name];
}
public function getCacheDir(): string
{
return $this->getProjectDir().'/var/cache/'.$this->environment;
}
public function getBuildDir(): string
{
return $this->getCacheDir();
}
public function getShareDir(): ?string
{
return $this->getCacheDir();
}
public function getLogDir(): string
{
return $this->getProjectDir().'/var/log';
}
public function getCharset(): string
{
return 'UTF-8';
}
protected function initializeBundles(): void
{
$this->doInitializeBundles();
foreach ($this->bundles as $name => $bundle) {
$this->bundles[$name] = !$bundle instanceof BundleInterface ? new BundleAdapter($bundle) : $bundle;
}
}
protected function initializeContainer(): void
{
$cachePath = $this->getEffectiveBuildDir().'/'.$this->getContainerClass().'.php';
$oldMtime = is_file($cachePath) ? filemtime($cachePath) : false;
$this->doInitializeContainer();
if (false !== $oldMtime && filemtime($cachePath) === $oldMtime) {
return;
}
$buildDir = $this->container->getParameter('kernel.build_dir');
$cacheDir = $this->container->getParameter('kernel.cache_dir');
$preload = $this instanceof WarmableInterface ? $this->warmUp($cacheDir, $buildDir) : [];
if ($this->container->has('cache_warmer')) {
$cacheWarmer = $this->container->get('cache_warmer');
if ($cacheDir !== $buildDir) {
$cacheWarmer->enableOptionalWarmers();
}
$preload = array_merge($preload, $cacheWarmer->warmUp($cacheDir, $buildDir));
}
if ($preload && file_exists($preloadFile = $buildDir.'/'.$this->getContainerClass().'.preload.php')) {
Preloader::append($preloadFile, $preload);
}
}
protected function getKernelParameters(): array
{
$parameters = $this->doGetKernelParameters() + [
'kernel.charset' => $this->getCharset(),
];
foreach ($this->bundles as $name => $bundle) {
$parameters['kernel.bundles_metadata'][$name]['namespace'] = $bundle->getNamespace();
}
return $parameters;
}
private function preBoot(): void
{
if ($this->debug) {
$this->startTime = microtime(true);
}
if ($this->debug && !isset($_ENV['SHELL_VERBOSITY']) && !isset($_SERVER['SHELL_VERBOSITY'])) {
if (\function_exists('putenv')) {
putenv('SHELL_VERBOSITY=3');
}
$_ENV['SHELL_VERBOSITY'] = 3;
$_SERVER['SHELL_VERBOSITY'] = 3;
}
$this->initializeBundles();
$this->initializeContainer();
$container = $this->container;
if ($container->hasParameter('kernel.trusted_hosts') && $trustedHosts = $container->getParameter('kernel.trusted_hosts')) {
Request::setTrustedHosts(\is_array($trustedHosts) ? $trustedHosts : preg_split('/\s*+,\s*+(?![^{]*})/', $trustedHosts));
}
if ($container->hasParameter('kernel.trusted_proxies') && $container->hasParameter('kernel.trusted_headers') && $trustedProxies = $container->getParameter('kernel.trusted_proxies')) {
$trustedHeaders = $container->getParameter('kernel.trusted_headers');
if (\is_string($trustedHeaders)) {
$trustedHeaders = array_map('trim', explode(',', $trustedHeaders));
}
if (\is_array($trustedHeaders)) {
$trustedHeaderSet = 0;
foreach ($trustedHeaders as $header) {
if (!\defined($const = Request::class.'::HEADER_'.strtr(strtoupper($header), '-', '_'))) {
throw new \InvalidArgumentException(\sprintf('The trusted header "%s" is not supported.', $header));
}
$trustedHeaderSet |= \constant($const);
}
} else {
$trustedHeaderSet = $trustedHeaders ?? (Request::HEADER_X_FORWARDED_FOR | Request::HEADER_X_FORWARDED_PORT | Request::HEADER_X_FORWARDED_PROTO);
}
Request::setTrustedProxies(\is_array($trustedProxies) ? $trustedProxies : array_map('trim', explode(',', $trustedProxies)), $trustedHeaderSet);
}
}
private function getEffectiveBuildDir(): string
{
return $this->warmupDir ?: $this->getBuildDir();
}
}