142 lines
3.8 KiB
PHP
142 lines
3.8 KiB
PHP
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<?php
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namespace Symfony\Component\HttpFoundation;
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien.potencier@symfony-project.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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/**
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* ResponseHeaderBag is a container for Response HTTP headers.
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*
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* @author Fabien Potencier <fabien.potencier@symfony-project.com>
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*/
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class ResponseHeaderBag extends HeaderBag
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{
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protected $computedCacheControl = array();
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/**
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* {@inheritdoc}
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*/
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public function replace(array $headers = array())
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{
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parent::replace($headers);
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if (!isset($this->headers['cache-control'])) {
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$this->set('cache-control', '');
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function set($key, $values, $replace = true)
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{
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parent::set($key, $values, $replace);
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if ('cache-control' === strtr(strtolower($key), '_', '-')) {
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$computed = $this->computeCacheControlValue();
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$this->headers['cache-control'] = array($computed);
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$this->computedCacheControl = $this->parseCacheControl($computed);
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function delete($key)
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{
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parent::delete($key);
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if ('cache-control' === strtr(strtolower($key), '_', '-')) {
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$this->computedCacheControl = array();
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function setCookie($name, $value, $domain = null, $expires = null, $path = '/', $secure = false, $httponly = true)
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{
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$this->validateCookieName($name, $value);
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$cookie = sprintf('%s=%s', $name, urlencode($value));
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if (null !== $expires) {
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if (is_numeric($expires)) {
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$expires = (int) $expires;
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} elseif ($expires instanceof \DateTime) {
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$expires = $expires->getTimestamp();
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} else {
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$expires = strtotime($expires);
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if (false === $expires || -1 == $expires) {
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throw new \InvalidArgumentException(sprintf('The "expires" cookie parameter is not valid.', $expires));
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}
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}
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$cookie .= '; expires='.substr(\DateTime::createFromFormat('U', $expires, new \DateTimeZone('UTC'))->format('D, d-M-Y H:i:s T'), 0, -5);
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}
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if ($domain) {
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$cookie .= '; domain='.$domain;
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}
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$cookie .= '; path='.$path;
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if ($secure) {
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$cookie .= '; secure';
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}
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if ($httponly) {
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$cookie .= '; httponly';
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}
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$this->set('Set-Cookie', $cookie, false);
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}
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/**
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* {@inheritdoc}
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*/
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public function hasCacheControlDirective($key)
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{
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return array_key_exists($key, $this->computedCacheControl);
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}
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/**
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* {@inheritdoc}
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*/
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public function getCacheControlDirective($key)
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{
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return array_key_exists($key, $this->computedCacheControl) ? $this->computedCacheControl[$key] : null;
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}
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protected function computeCacheControlValue()
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{
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if (!$this->cacheControl && !$this->has('ETag') && !$this->has('Last-Modified') && !$this->has('Expires')) {
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return 'no-cache';
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}
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if (!$this->cacheControl) {
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// conservative by default
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return 'private, max-age=0, must-revalidate';
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}
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$header = $this->getCacheControlHeader();
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if (isset($this->cacheControl['public']) || isset($this->cacheControl['private'])) {
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return $header;
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}
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// public if s-maxage is defined, private otherwise
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if (!isset($this->cacheControl['s-maxage'])) {
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return $header.', private';
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}
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return $header;
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}
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}
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