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<?php
namespace Bitrix\Main;
use Bitrix\Main\Config;
use Bitrix\Main\Engine;
use Bitrix\Main\Web;
class HttpResponse extends Response
{
public const STORE_COOKIE_NAME = "STORE_COOKIES";
/** @var \Bitrix\Main\Web\Cookie[] */
protected $cookies = [];
/** @var Web\HttpHeaders */
protected $headers;
/** @var \Bitrix\Main\Type\DateTime */
protected $lastModified;
public function __construct()
{
parent::__construct();
$this->setHeaders(new Web\HttpHeaders());
}
/**
* Flushes the content to the output buffer. All following output will be ignored.
* @param string $text
*/
public function flush($text = '')
{
//clear all buffers - the response is responsible alone for its content
while (@ob_end_clean());
if (function_exists("fastcgi_finish_request"))
{
//php-fpm
$this->writeHeaders();
$this->writeBody($text);
fastcgi_finish_request();
}
else
{
//apache handler
ob_start();
$this->writeBody($text);
$size = ob_get_length();
$this->addHeader('Content-Length', $size);
$this->writeHeaders();
ob_end_flush();
@ob_flush();
flush();
}
}
/**
* Adds a HTTP header field to the response.
*
* @param string $name Header field name
* @param string $value Header field value
* @return $this
* @throws ArgumentNullException
*/
public function addHeader($name, $value = '')
{
if (empty($name))
throw new ArgumentNullException("name");
$this->getHeaders()->add($name, $value);
return $this;
}
/**
* Sets a collection of HTTP headers.
* @param Web\HttpHeaders $headers Headers collection.
*
* @return $this
*/
public function setHeaders(Web\HttpHeaders $headers)
{
$this->headers = $headers;
return $this;
}
/**
* Adds a cookie to the response.
*
* @param Web\Cookie $cookie The cookie.
* @param bool $replace Replace an existing cookie or not.
* @param bool $checkExpires Check expires value of the cookie or not.
* @return $this
*/
public function addCookie(Web\Cookie $cookie, $replace = true, $checkExpires = true)
{
$key = $cookie->getName().".".$cookie->getDomain().".".$cookie->getPath();
if($replace || !isset($this->cookies[$key]))
{
if($checkExpires && $cookie->getExpires() > 0)
{
//it's a persistent cookie; we should check if we're allowed to store persistent cookies
static $askToStore = null;
if($askToStore === null)
{
$askToStore = Config\Option::get("main", "ask_to_store_cookies");
}
if($askToStore === "Y")
{
if(Context::getCurrent()->getRequest()->getCookiesMode() !== "Y")
{
//user declined to store cookies - we're using session cookies only
$cookie->setExpires(0);
}
}
}
$this->cookies[$key] = $cookie;
}
return $this;
}
/**
* Remembers user's choice about storing persistent cookies.
* @param bool $mode
*/
public function allowPersistentCookies($mode)
{
if($mode === true)
{
//persistent cookie to remember
$cookie = new Web\Cookie(self::STORE_COOKIE_NAME, "Y");
}
else
{
//session cookie: we're not allowed to store persistent cookies
$cookie = new Web\Cookie(self::STORE_COOKIE_NAME, "N", 0);
}
$this->addCookie($cookie, true, false);
}
/**
* @return Web\Cookie[]
*/
public function getCookies()
{
return $this->cookies;
}
/**
* @return Web\HttpHeaders
*/
public function getHeaders()
{
return $this->headers;
}
/**
* Flushes all headers and cookies
*/
public function writeHeaders()
{
if($this->lastModified !== null)
{
$this->flushHeader(array("Last-Modified", gmdate("D, d M Y H:i:s", $this->lastModified->getTimestamp()) . " GMT"));
}
foreach ($this->getHeaders() as $name => $values)
{
if (is_array($values))
{
foreach ($values as $value)
{
$this->flushHeader([$name, $value]);
}
}
elseif($values !== '')
{
$this->flushHeader([$name, $values]);
}
else
{
$this->flushHeader($name);
}
}
$cookiesCrypter = new Web\CookiesCrypter();
foreach ($this->cookies as $cookie)
{
if (!$cookiesCrypter->shouldEncrypt($cookie))
{
$this->setCookie($cookie);
}
else
{
foreach ($cookiesCrypter->encrypt($cookie) as $cryptoCookie)
{
$this->setCookie($cryptoCookie);
}
}
}
}
protected function flushHeader($header)
{
if (is_array($header))
{
header(sprintf("%s: %s", $header[0], $header[1]));
}
else
{
header($header);
}
return $this;
}
protected function setCookie(Web\Cookie $cookie)
{
if ($cookie->getSpread() & Web\Cookie::SPREAD_DOMAIN)
{
$params = [
'expires' => $cookie->getExpires(),
'path' => $cookie->getPath(),
'domain' => $cookie->getDomain(),
'secure' => $cookie->getSecure(),
'httponly' => $cookie->getHttpOnly(),
];
if (($sameSite = $cookie->getSameSite()) !== null)
{
$params['samesite'] = $sameSite;
}
setcookie(
$cookie->getName(),
$cookie->getValue(),
$params
);
}
return $this;
}
/**
* Sets the HTTP status of the response.
*
* @param string $status
* @return $this
*/
public function setStatus($status)
{
$httpStatus = Config\Configuration::getValue("http_status");
$cgiMode = (stristr(php_sapi_name(), "cgi") !== false);
if ($cgiMode && ($httpStatus == null || $httpStatus == false))
{
$this->addHeader("Status", $status);
}
else
{
$httpHeaders = $this->getHeaders();
$httpHeaders->delete($this->getStatus());
$proto = $this->getServerProtocol();
$this->addHeader("{$proto} {$status}");
}
return $this;
}
/**
* Returns the HTTP status of the response.
* @return int|string|null
*/
public function getStatus()
{
$cgiStatus = $this->getHeaders()->get('Status');
if ($cgiStatus)
{
return $cgiStatus;
}
$prefixStatus = strtolower($this->getServerProtocol().' ');
$prefixStatusLength = strlen($prefixStatus);
foreach ($this->getHeaders() as $name => $value)
{
if (substr(strtolower($name), 0, $prefixStatusLength) === $prefixStatus)
{
return $name;
}
}
return null;
}
protected function getServerProtocol()
{
$context = Context::getCurrent();
if ($context !== null)
{
$server = $context->getServer();
if ($server !== null)
{
return $server->get("SERVER_PROTOCOL");
}
}
return "HTTP/1.0";
}
/**
* Sets the latest time for the Last-Modified header field.
*
* @param Type\DateTime $time
* @return $this
*/
public function setLastModified(Type\DateTime $time)
{
if($this->lastModified === null || $time->getTimestamp() > $this->lastModified->getTimestamp())
{
$this->lastModified = $time;
}
return $this;
}
/**
* @param $url
* @return Engine\Response\Redirect
*/
final public function redirectTo($url): HttpResponse
{
$redirectResponse = new Engine\Response\Redirect($url);
return $this->copyHeadersTo($redirectResponse);
}
public function copyHeadersTo(HttpResponse $response): HttpResponse
{
$httpHeaders = $response->getHeaders();
$status = $response->getStatus();
$previousStatus = $this->getStatus();
foreach ($this->getHeaders() as $headerName => $values)
{
if ($this->shouldIgnoreHeaderToClone($headerName))
{
continue;
}
if ($status && $headerName === $previousStatus)
{
continue;
}
if ($httpHeaders->get($headerName))
{
continue;
}
$httpHeaders->add($headerName, $values);
}
foreach ($this->getCookies() as $cookie)
{
$response->addCookie($cookie, false);
}
return $response;
}
private function shouldIgnoreHeaderToClone($headerName)
{
return in_array(strtolower($headerName), [
'content-encoding',
'content-length',
'content-type',
], true);
}
}