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Directory >> /var/www/html/back/vendor/symfony/http-kernel/HttpCache/

File / Folder	Size	Action
.	-
AbstractSurrogate.php	4.311KB	edt ren
CacheWasLockedException...	0.354KB	edt ren
Esi.php	3.203KB	edt ren
HttpCache.php	26.054KB	edt ren
ResponseCacheStrategy.php	8.48KB	edt ren
ResponseCacheStrategyIn...	0.989KB	edt ren
Ssi.php	2.5KB	edt ren
Store.php	14.365KB	edt ren
StoreInterface.php	2.135KB	edt ren
SubRequestHandler.php	3.832KB	edt ren
SurrogateInterface.php	2.066KB	edt ren

<?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\HttpCache;

use Symfony\Component\HttpFoundation\IpUtils;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\HttpKernelInterface;

/**
 * @author Nicolas Grekas <p@tchwork.com>
 *
 * @internal
 */
class SubRequestHandler
{
    public static function handle(HttpKernelInterface $kernel, Request $request, int $type, bool $catch): Response
    {
        // save global state related to trusted headers and proxies
        $trustedProxies = Request::getTrustedProxies();
        $trustedHeaderSet = Request::getTrustedHeaderSet();

// remove untrusted values
        $remoteAddr = $request->server->get('REMOTE_ADDR');
        if (!$remoteAddr || !IpUtils::checkIp($remoteAddr, $trustedProxies)) {
            $trustedHeaders = [
                'FORWARDED' => $trustedHeaderSet & Request::HEADER_FORWARDED,
                'X_FORWARDED_FOR' => $trustedHeaderSet & Request::HEADER_X_FORWARDED_FOR,
                'X_FORWARDED_HOST' => $trustedHeaderSet & Request::HEADER_X_FORWARDED_HOST,
                'X_FORWARDED_PROTO' => $trustedHeaderSet & Request::HEADER_X_FORWARDED_PROTO,
                'X_FORWARDED_PORT' => $trustedHeaderSet & Request::HEADER_X_FORWARDED_PORT,
                'X_FORWARDED_PREFIX' => $trustedHeaderSet & Request::HEADER_X_FORWARDED_PREFIX,
            ];
            foreach (array_filter($trustedHeaders) as $name => $key) {
                $request->headers->remove($name);
                $request->server->remove('HTTP_'.$name);
            }
        }

// compute trusted values, taking any trusted proxies into account
        $trustedIps = [];
        $trustedValues = [];
        foreach (array_reverse($request->getClientIps()) as $ip) {
            $trustedIps[] = $ip;
            $trustedValues[] = \sprintf('for="%s"', $ip);
        }
        if ($ip !== $remoteAddr) {
            $trustedIps[] = $remoteAddr;
            $trustedValues[] = \sprintf('for="%s"', $remoteAddr);
        }

// set trusted values, reusing as much as possible the global trusted settings
        if (Request::HEADER_FORWARDED & $trustedHeaderSet) {
            $trustedValues[0] .= \sprintf(';host="%s";proto=%s', $request->getHttpHost(), $request->getScheme());
            $request->headers->set('Forwarded', $v = implode(', ', $trustedValues));
            $request->server->set('HTTP_FORWARDED', $v);
        }
        if (Request::HEADER_X_FORWARDED_FOR & $trustedHeaderSet) {
            $request->headers->set('X-Forwarded-For', $v = implode(', ', $trustedIps));
            $request->server->set('HTTP_X_FORWARDED_FOR', $v);
        } elseif (!(Request::HEADER_FORWARDED & $trustedHeaderSet)) {
            Request::setTrustedProxies($trustedProxies, $trustedHeaderSet | Request::HEADER_X_FORWARDED_FOR);
            $request->headers->set('X-Forwarded-For', $v = implode(', ', $trustedIps));
            $request->server->set('HTTP_X_FORWARDED_FOR', $v);
        }

// fix the client IP address by setting it to 127.0.0.1,
        // which is the core responsibility of this method
        $request->server->set('REMOTE_ADDR', '127.0.0.1');

// ensure 127.0.0.1 is set as trusted proxy
        if (!IpUtils::checkIp('127.0.0.1', $trustedProxies)) {
            Request::setTrustedProxies(array_merge($trustedProxies, ['127.0.0.1']), Request::getTrustedHeaderSet());
        }

try {
            return $kernel->handle($request, $type, $catch);
        } finally {
            // restore global state
            Request::setTrustedProxies($trustedProxies, $trustedHeaderSet);
        }
    }
}

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