<?php
/**
* URI.php - Jaxon request URI detector
*
* Detect and parse the URI of the Jaxon request being processed.
*
* @package jaxon-core
* @author Thierry Feuzeu <thierry.feuzeu@gmail.com>
* @copyright 2016 Thierry Feuzeu <thierry.feuzeu@gmail.com>
* @license https://opensource.org/licenses/BSD-3-Clause BSD 3-Clause License
* @link https://github.com/jaxon-php/jaxon-core
*/
namespace Jaxon\Utils\Http;
class URI
{
/**
* Get the URL from the $_SERVER var
*
* @var array &$aURL The URL data
* @var string $sKey The key in the $_SERVER array
*
* @return void
*/
private function getHostFromServer(array &$aURL, $sKey)
{
if(empty($aURL['host']) && !empty($_SERVER[$sKey]))
{
if(strpos($_SERVER[$sKey], ':') > 0)
{
list($aURL['host'], $aURL['port']) = explode(':', $_SERVER[$sKey]);
}
else
{
$aURL['host'] = $_SERVER[$sKey];
}
}
}
/**
* Detect the URI of the current request
*
* @return string The URI
*/
public function detect()
{
$aURL = [];
// Try to get the request URL
if(!empty($_SERVER['REQUEST_URI']))
{
$_SERVER['REQUEST_URI'] = str_replace(['"', "'", '<', '>'], ['%22', '%27', '%3C', '%3E'], $_SERVER['REQUEST_URI']);
$aURL = parse_url($_SERVER['REQUEST_URI']);
if(!is_array($aURL))
{
$aURL = [];
}
}
// Fill in the empty values
if(empty($aURL['scheme']))
{
if(!empty($_SERVER['HTTP_SCHEME']))
{
$aURL['scheme'] = $_SERVER['HTTP_SCHEME'];
}
else
{
$aURL['scheme'] = ((!empty($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) != 'off') ? 'https' : 'http');
}
}
$this->getHostFromServer($aURL, 'HTTP_X_FORWARDED_HOST');
$this->getHostFromServer($aURL, 'HTTP_HOST');
$this->getHostFromServer($aURL, 'SERVER_NAME');
if(empty($aURL['host']))
{
throw new \Jaxon\Exception\URI();
}
if(empty($aURL['port']) && !empty($_SERVER['SERVER_PORT']))
{
$aURL['port'] = $_SERVER['SERVER_PORT'];
}
if(!empty($aURL['path']) && strlen(basename($aURL['path'])) == 0)
{
unset($aURL['path']);
}
if(empty($aURL['path']))
{
if(!empty($_SERVER['PATH_INFO']))
{
$sPath = parse_url($_SERVER['PATH_INFO']);
}
else
{
$sPath = parse_url($_SERVER['PHP_SELF']);
}
if(isset($sPath['path']))
{
$aURL['path'] = str_replace(['"', "'", '<', '>'], ['%22', '%27', '%3C', '%3E'], $sPath['path']);
}
unset($sPath);
}
if(empty($aURL['query']))
{
$aURL['query'] = empty($_SERVER['QUERY_STRING']) ? '' : $_SERVER['QUERY_STRING'];
}
if(!empty($aURL['query']))
{
$aURL['query'] = '?' . $aURL['query'];
}
// Build the URL: Start with scheme, user and pass
$sURL = $aURL['scheme'] . '://';
if(!empty($aURL['user']))
{
$sURL .= $aURL['user'];
if(!empty($aURL['pass']))
{
$sURL .= ':' . $aURL['pass'];
}
$sURL .= '@';
}
// Add the host
$sURL .= $aURL['host'];
// Add the port if needed
if(!empty($aURL['port']) &&
(($aURL['scheme'] == 'http' && $aURL['port'] != 80) ||
($aURL['scheme'] == 'https' && $aURL['port'] != 443)))
{
$sURL .= ':' . $aURL['port'];
}
// Add the path and the query string
$sURL .= $aURL['path'] . $aURL['query'];
// Clean up
unset($aURL);
$aURL = explode("?", $sURL);
if(1 < count($aURL))
{
$aQueries = explode("&", $aURL[1]);
foreach($aQueries as $sKey => $sQuery)
{
if("jxnGenerate" == substr($sQuery, 0, 11))
{
unset($aQueries[$sKey]);
}
}
$sQueries = implode("&", $aQueries);
$aURL[1] = $sQueries;
$sURL = implode("?", $aURL);
}
return $sURL;
}
}
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