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<?php
/**
* HTTP Request information
*
* This object can be used to easily access information about an HTTP request.
* It can additionally be used to create 'mock' requests.
*
* This class mostly operates independent, but because of the nature of a single
* request per run it can operate as a singleton. For more information check out
* the behaviour around 'defaultInputStream'.
*
* @package Sabre
* @subpackage HTTP
* @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
* @author Evert Pot (http://www.rooftopsolutions.nl/)
* @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
*/
class Sabre_HTTP_Request {
/**
* PHP's $_SERVER data
*
* @var array
*/
protected $_SERVER;
/**
* PHP's $_POST data
*
* @var array
*/
protected $_POST;
/**
* The request body, if any.
*
* This is stored in the form of a stream resource.
*
* @var resource
*/
protected $body = null;
/**
* This will be set as the 'default' inputStream for a specific HTTP request
* We sometimes need to retain, or rebuild this if we need multiple runs
* of parsing the original HTTP request.
*
* @var resource
*/
static $defaultInputStream=null;
/**
* Sets up the object
*
* The serverData and postData array can be used to override usage of PHP's
* global _SERVER and _POST variable respectively.
*
* @param array $serverData
* @param array $postData
*/
public function __construct(array $serverData = null, array $postData = null) {
if ($serverData) $this->_SERVER = $serverData;
else $this->_SERVER =& $_SERVER;
if ($postData) $this->_POST = $postData;
else $this->_POST =& $_POST;
}
/**
* Returns the value for a specific http header.
*
* This method returns null if the header did not exist.
*
* @param string $name
* @return string
*/
public function getHeader($name) {
$name = strtoupper(str_replace(array('-'),array('_'),$name));
if (isset($this->_SERVER['HTTP_' . $name])) {
return $this->_SERVER['HTTP_' . $name];
}
// There's a few headers that seem to end up in the top-level
// server array.
switch($name) {
case 'CONTENT_TYPE' :
case 'CONTENT_LENGTH' :
if (isset($this->_SERVER[$name])) {
return $this->_SERVER[$name];
}
break;
}
return;
}
/**
* Returns all (known) HTTP headers.
*
* All headers are converted to lower-case, and additionally all underscores
* are automatically converted to dashes
*
* @return array
*/
public function getHeaders() {
$hdrs = array();
foreach($this->_SERVER as $key=>$value) {
switch($key) {
case 'CONTENT_LENGTH' :
case 'CONTENT_TYPE' :
$hdrs[strtolower(str_replace('_','-',$key))] = $value;
break;
default :
if (strpos($key,'HTTP_')===0) {
$hdrs[substr(strtolower(str_replace('_','-',$key)),5)] = $value;
}
break;
}
}
return $hdrs;
}
/**
* Returns the HTTP request method
*
* This is for example POST or GET
*
* @return string
*/
public function getMethod() {
return $this->_SERVER['REQUEST_METHOD'];
}
/**
* Returns the requested uri
*
* @return string
*/
public function getUri() {
return $this->_SERVER['REQUEST_URI'];
}
/**
* Will return protocol + the hostname + the uri
*
* @return string
*/
public function getAbsoluteUri() {
// Checking if the request was made through HTTPS. The last in line is for IIS
$protocol = isset($this->_SERVER['HTTPS']) && ($this->_SERVER['HTTPS']) && ($this->_SERVER['HTTPS']!='off');
return ($protocol?'https':'http') . '://' . $this->getHeader('Host') . $this->getUri();
}
/**
* Returns everything after the ? from the current url
*
* @return string
*/
public function getQueryString() {
return isset($this->_SERVER['QUERY_STRING'])?$this->_SERVER['QUERY_STRING']:'';
}
/**
* Returns the HTTP request body body
*
* This method returns a readable stream resource.
* If the asString parameter is set to true, a string is sent instead.
*
* @param bool asString
* @return resource
*/
public function getBody($asString = false) {
if (is_null($this->body)) {
if (!is_null(self::$defaultInputStream)) {
$this->body = self::$defaultInputStream;
} else {
$this->body = fopen('php://input','r');
self::$defaultInputStream = $this->body;
}
}
if ($asString) {
$body = stream_get_contents($this->body);
return $body;
} else {
return $this->body;
}
}
/**
* Sets the contents of the HTTP request body
*
* This method can either accept a string, or a readable stream resource.
*
* If the setAsDefaultInputStream is set to true, it means for this run of the
* script the supplied body will be used instead of php://input.
*
* @param mixed $body
* @param bool $setAsDefaultInputStream
* @return void
*/
public function setBody($body,$setAsDefaultInputStream = false) {
if(is_resource($body)) {
$this->body = $body;
} else {
$stream = fopen('php://temp','r+');
fputs($stream,$body);
rewind($stream);
// String is assumed
$this->body = $stream;
}
if ($setAsDefaultInputStream) {
self::$defaultInputStream = $this->body;
}
}
/**
* Returns PHP's _POST variable.
*
* The reason this is in a method is so it can be subclassed and
* overridden.
*
* @return array
*/
public function getPostVars() {
return $this->_POST;
}
/**
* Returns a specific item from the _SERVER array.
*
* Do not rely on this feature, it is for internal use only.
*
* @param string $field
* @return string
*/
public function getRawServerValue($field) {
return isset($this->_SERVER[$field])?$this->_SERVER[$field]:null;
}
}
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