<?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\Request;
use Symfony\Component\HttpFoundation\Response;

/**
 * Ssi implements the SSI capabilities to Request and Response instances.
 *
 * @author Sebastian Krebs <krebs.seb@gmail.com>
 */
class Ssi extends AbstractSurrogate
{
    /**
     * {@inheritdoc}
     */
    public function getName(): string
    {
        return 'ssi';
    }

    /**
     * {@inheritdoc}
     */
    public function addSurrogateControl(Response $response)
    {
        if (str_contains($response->getContent(), '<!--#include')) {
            $response->headers->set('Surrogate-Control', 'content="SSI/1.0"');
        }
    }

    /**
     * {@inheritdoc}
     */
    public function renderIncludeTag(string $uri, string $alt = null, bool $ignoreErrors = true, string $comment = ''): string
    {
        return sprintf('<!--#include virtual="%s" -->', $uri);
    }

    /**
     * {@inheritdoc}
     */
    public function process(Request $request, Response $response): Response
    {
        $type = $response->headers->get('Content-Type');
        if (empty($type)) {
            $type = 'text/html';
        }

        $parts = explode(';', $type);
        if (!\in_array($parts[0], $this->contentTypes)) {
            return $response;
        }

        // we don't use a proper XML parser here as we can have SSI tags in a plain text response
        $content = $response->getContent();

        $chunks = preg_split('#<!--\#include\s+(.*?)\s*-->#', $content, -1, \PREG_SPLIT_DELIM_CAPTURE);
        $chunks[0] = str_replace($this->phpEscapeMap[0], $this->phpEscapeMap[1], $chunks[0]);

        $i = 1;
        while (isset($chunks[$i])) {
            $options = [];
            preg_match_all('/(virtual)="([^"]*?)"/', $chunks[$i], $matches, \PREG_SET_ORDER);
            foreach ($matches as $set) {
                $options[$set[1]] = $set[2];
            }

            if (!isset($options['virtual'])) {
                throw new \RuntimeException('Unable to process an SSI tag without a "virtual" attribute.');
            }

            $chunks[$i] = sprintf('<?php echo $this->surrogate->handle($this, %s, \'\', false) ?>'."\n",
                var_export($options['virtual'], true)
            );
            ++$i;
            $chunks[$i] = str_replace($this->phpEscapeMap[0], $this->phpEscapeMap[1], $chunks[$i]);
            ++$i;
        }
        $content = implode('', $chunks);

        $response->setContent($content);
        $response->headers->set('X-Body-Eval', 'SSI');

        // remove SSI/1.0 from the Surrogate-Control header
        $this->removeFromControl($response);

        return $response;
    }
}

• [F] AbstractSurrogate.php
  Delete
• [F] Esi.php
  Delete
• [F] HttpCache.php
  Delete
• [F] ResponseCacheStrategy.php
  Delete
• [F] ResponseCacheStrategyInterface.php
  Delete
• [F] Ssi.php
  Delete
• [F] Store.php
  Delete
• [F] StoreInterface.php
  Delete
• [F] SubRequestHandler.php
  Delete
• [F] SurrogateInterface.php
  Delete

Contact Section

Get in Touch with Us for Any Questions or Support

We’d love to hear from you! Whether you have questions, feedback, or need support, our team is here to help. Reach out to us via email, phone, or visit our office. We’re committed to providing you with exceptional service and ensuring your experience with NFC Pay is seamless and satisfying. Let’s connect!

Name*

Email*

Message*

Send Message

Our Location

20-22 Wenlock Road, England, N1 7GU

Call us on: +03601 885399

Our office hours Monday–Friday, 9am - 9pm

Email us directly

support@example.com