<?php
namespace OAuth\Common\Http\Uri;
use RuntimeException;
/**
* Factory class for uniform resource indicators
*/
class UriFactory implements UriFactoryInterface
{
/**
* Factory method to build a URI from a super-global $_SERVER array.
*
* @param array $_server
*
* @return UriInterface
*/
public function createFromSuperGlobalArray(array $_server)
{
if ($uri = $this->attemptProxyStyleParse($_server)) {
return $uri;
}
$scheme = $this->detectScheme($_server);
$host = $this->detectHost($_server);
$port = $this->detectPort($_server);
$path = $this->detectPath($_server);
$query = $this->detectQuery($_server);
return $this->createFromParts($scheme, '', $host, $port, $path, $query);
}
/**
* @param string $absoluteUri
*
* @return UriInterface
*/
public function createFromAbsolute($absoluteUri)
{
return new Uri($absoluteUri);
}
/**
* Factory method to build a URI from parts
*
* @param string $scheme
* @param string $userInfo
* @param string $host
* @param string $port
* @param string $path
* @param string $query
* @param string $fragment
*
* @return UriInterface
*/
public function createFromParts($scheme, $userInfo, $host, $port, $path = '', $query = '', $fragment = '')
{
$uri = new Uri();
$uri->setScheme($scheme);
$uri->setUserInfo($userInfo);
$uri->setHost($host);
$uri->setPort($port);
$uri->setPath($path);
$uri->setQuery($query);
$uri->setFragment($fragment);
return $uri;
}
/**
* @param array $_server
*
* @return UriInterface|null
*/
private function attemptProxyStyleParse($_server)
{
// If the raw HTTP request message arrives with a proxy-style absolute URI in the
// initial request line, the absolute URI is stored in $_SERVER['REQUEST_URI'] and
// we only need to parse that.
if (isset($_server['REQUEST_URI']) && parse_url($_server['REQUEST_URI'], PHP_URL_SCHEME)) {
return new Uri($_server['REQUEST_URI']);
}
return null;
}
/**
* @param array $_server
*
* @return string
*
* @throws RuntimeException
*/
private function detectPath($_server)
{
if (isset($_server['REQUEST_URI'])) {
$uri = $_server['REQUEST_URI'];
} elseif (isset($_server['REDIRECT_URL'])) {
$uri = $_server['REDIRECT_URL'];
} else {
throw new RuntimeException('Could not detect URI path from superglobal');
}
$queryStr = strpos($uri, '?');
if ($queryStr !== false) {
$uri = substr($uri, 0, $queryStr);
}
return $uri;
}
/**
* @param array $_server
*
* @return string
*/
private function detectHost(array $_server)
{
$host = isset($_server['HTTP_HOST']) ? $_server['HTTP_HOST'] : '';
if (strstr($host, ':')) {
$host = parse_url($host, PHP_URL_HOST);
}
return $host;
}
/**
* @param array $_server
*
* @return string
*/
private function detectPort(array $_server)
{
return isset($_server['SERVER_PORT']) ? $_server['SERVER_PORT'] : 80;
}
/**
* @param array $_server
*
* @return string
*/
private function detectQuery(array $_server)
{
return isset($_server['QUERY_STRING']) ? $_server['QUERY_STRING'] : '';
}
/**
* Determine URI scheme component from superglobal array
*
* When using ISAPI with IIS, the value will be "off" if the request was
* not made through the HTTPS protocol. As a result, we filter the
* value to a bool.
*
* @param array $_server A super-global $_SERVER array
*
* @return string Returns http or https depending on the URI scheme
*/
private function detectScheme(array $_server)
{
if (isset($_server['HTTPS']) && filter_var($_server['HTTPS'], FILTER_VALIDATE_BOOLEAN)) {
return 'https';
} else {
return 'http';
}
}
}