Source for file jRequest.class.php

Documentation is available at jRequest.class.php

<?php
/**
* @package jelix
* @subpackage core
* @author Laurent Jouanneau
* @contributor Yannick Le Guédart
* @link http://www.jelix.org
* @licence GNU Lesser General Public Licence see LICENCE file or http://www.gnu.org/licenses/lgpl.html
*/
/**
* base class for object which retrieve all parameters of an http request. The
* process depends on the type of request (ex: xmlrpc..)
*
* @package jelix
* @subpackage core
*/
abstract class jRequest {
/**
* request parameters
* could set from $_GET, $_POST, or from data processing of $HTTP_RAW_POST_DATA
* @var array
*/
public $params;
/**
* the request type code
* @var string
*/
public $type;
/**
* the type of the default response
* @var string
*/
public $defaultResponseType = '';
/**
* @var string the name of the base class for an allowed response for the current request
*/
public $authorizedResponseClass = '';
/**
* the path of the entry point in the url (basePath included)
* if the url is /foo/index.php/bar, its value is /foo/
* @var string
*/
public $urlScriptPath;
/**
* the name of the entry point
* if the url is /foo/index.php/bar, its value is index.php
* @var string
*/
public $urlScriptName;
/**
* the path to the entry point in the url (basePath included)
* if the url is /foo/index.php/bar, its value is /foo/index.php
* @var string
*/
public $urlScript;
/**
* the pathinfo part of the url
* if the url is /foo/index.php/bar, its value is /bar
* @var string
*/
public $urlPathInfo;
function __construct(){ }
/**
* initialize the request : analyse of http request etc..
*/
public function init(){
$this->_initUrlData();
$this->_initParams();
}
/**
* analyse the http request and sets the params property
*/
abstract protected function _initParams();
/**
* init the url* properties
*/
protected function _initUrlData(){
global $gJConfig;
$this->urlScript = $gJConfig->urlengine['urlScript'];
$this->urlScriptPath = $gJConfig->urlengine['urlScriptPath'];
$this->urlScriptName = $gJConfig->urlengine['urlScriptName'];
$piiqp = $gJConfig->urlengine['pathInfoInQueryParameter'];
if ($piiqp) {
if (isset($_GET[$piiqp])) {
$pathinfo = $_GET[$piiqp];
unset($_GET[$piiqp]);
} else
$pathinfo = '';
} else if(isset($_SERVER['PATH_INFO'])){
$pathinfo = $_SERVER['PATH_INFO'];
} else if(isset($_SERVER['ORIG_PATH_INFO'])){
$pathinfo = $_SERVER['ORIG_PATH_INFO'];
} else
$pathinfo = '';
if($pathinfo == $this->urlScript) {
//when php is used as cgi and if there isn't pathinfo in the url
$pathinfo = '';
}
if ($gJConfig->isWindows && $pathinfo && strpos($pathinfo, $this->urlScript) !== false){
//under IIS, we may get /subdir/index.php/mypath/myaction as PATH_INFO, so we fix it
$pathinfo = substr ($pathinfo, strlen ($this->urlScript));
}
$this->urlPathInfo = $pathinfo;
}
/**
* Gets the value of a request parameter. If not defined, gets its default value.
* @param string $name the name of the request parameter
* @param mixed $defaultValue the default returned value if the parameter doesn't exists
* @param boolean $useDefaultIfEmpty true: says to return the default value if the parameter value is ""
* @return mixed the request parameter value
*/
public function getParam($name, $defaultValue=null, $useDefaultIfEmpty=false){
if(isset($this->params[$name])){
if($useDefaultIfEmpty && trim($this->params[$name]) == ''){
return $defaultValue;
}else{
return $this->params[$name];
}
}else{
return $defaultValue;
}
}
/**
* @param jResponse $response the response
* @return boolean true if the given class is allowed for the current request
*/
public function isAllowedResponse($response){
return ($response instanceof $this->authorizedResponseClass);
}
/**
* get a response object.
* @param string $name the name of the response type (ex: "html")
* @param boolean $useOriginal true:don't use the response object redefined by the application
* @return jResponse the response object
*/
public function getResponse($type='', $useOriginal = false){
global $gJCoord, $gJConfig;
if($type == ''){
$type = $this->defaultResponseType;
}
if ($useOriginal)
$responses = &$gJConfig->_coreResponses;
else
$responses = &$gJConfig->responses;
if(!isset($responses[$type])){
if ($gJCoord->action) {
$action = $gJCoord->action->resource;
$path = $gJCoord->action->getPath();
}
else {
$action = $gJCoord->moduleName.'~'.$gJCoord->actionName;
$path = '';
}
if ($type == $this->defaultResponseType)
throw new jException('jelix~errors.default.response.type.unknown',array($action,$type));
else
throw new jException('jelix~errors.ad.response.type.unknown',array($action, $type, $path));
}
$respclass = $responses[$type];
$path = $responses[$type.'.path'];
if(!class_exists($respclass,false))
require($path);
$response = new $respclass();
if (!$this->isAllowedResponse($response)){
throw new jException('jelix~errors.ad.response.type.notallowed',array($gJCoord->action->resource, $type, $gJCoord->action->getPath()));
}
$gJCoord->response = $response;
return $response;
}
/**
* @return jResponse
*/
public function getErrorResponse($currentResponse) {
try {
return $this->getResponse('', true);
}
catch(Exception $e) {
require_once(JELIX_LIB_CORE_PATH.'response/jResponseText.class.php');
return new jResponseText();
}
}
/**
* return the ip address of the user
* @return string the ip
*/
function getIP() {
if (isset ($_SERVER['HTTP_X_FORWARDED_FOR']) && $_SERVER['HTTP_X_FORWARDED_FOR']){
// it may content ips of all traversed proxies.
$list = preg_split('/[\s,]+/', $_SERVER['HTTP_X_FORWARDED_FOR']);
$list = array_reverse($list);
$lastIp = '';
foreach($list as $ip) {
$ip = trim($ip);
if(preg_match('/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/',$ip,$m)) {
if ($m[1] == '10' || $m[1] == '010'
|| ($m[1] == '172' && (intval($m[2]) & 240 == 16))
|| ($m[1] == '192' && $m[2] == '168'))
break; // stop at first private address. we just want the last public address
$lastIp = $ip;
}
elseif (preg_match('/^(?:[a-f0-9]{1,4})(?::(?:[a-f0-9]{1,4})){7}$/i',$ip)) {
$lastIp = $ip;
}
}
if ($lastIp)
return $lastIp;
}
if (isset ($_SERVER['HTTP_CLIENT_IP']) && $_SERVER['HTTP_CLIENT_IP']){
return $_SERVER['HTTP_CLIENT_IP'];
}else{
return $_SERVER['REMOTE_ADDR'];
}
}
/**
* return the protocol
* @return string http:// or https://
* @since 1.2
*/
function getProtocol() {
return (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] && $_SERVER['HTTPS'] != 'off' ? 'https://':'http://');
}
/**
* says if this is an ajax request
* @return boolean true if it is an ajax request
* @since 1.3a1
*/
function isAjax() {
if (isset($_SERVER['HTTP_X_REQUESTED_WITH']))
return ($_SERVER['HTTP_X_REQUESTED_WITH'] === "XMLHttpRequest");
else
return false;
}
/**
* return the application domain name
* @return string
* @since 1.2.3
*/
function getDomainName() {
global $gJConfig;
if ($gJConfig->domainName != '') {
return $gJConfig->domainName;
}
elseif (isset($_SERVER['SERVER_NAME'])) {
return $_SERVER['SERVER_NAME'];
}
elseif (isset($_SERVER['HTTP_HOST'])) {
if (($pos = strpos($_SERVER['HTTP_HOST'], ':')) !== false)
return substr($_SERVER['HTTP_HOST'],0, $pos);
return $_SERVER['HTTP_HOST'];
}
return '';
}
/**
* return the server URI of the application (protocol + server name + port)
* @return string the serveur uri
* @since 1.2.4
*/
function getServerURI($forceHttps = null) {
$isHttps = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] && $_SERVER['HTTPS'] != 'off');
if ( ($forceHttps === null && $isHttps) || $forceHttps) {
$uri = 'https://';
}
else {
$uri = 'http://';
}
$uri .= $this->getDomainName();
$uri .= $this->getPort($forceHttps);
return $uri;
}
/**
* return the server port of the application
* @return string the ":port" or empty string
* @since 1.2.4
*/
function getPort($forceHttps = null) {
$isHttps = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] && $_SERVER['HTTPS'] != 'off');
if ($forceHttps === null)
$https = $isHttps;
else
$https = $forceHttps;
global $gJConfig;
$forcePort = ($https ? $gJConfig->forceHTTPSPort : $gJConfig->forceHTTPPort);
if ($forcePort === true) {
return '';
}
else if ($forcePort) { // a number
$port = $forcePort;
}
else if($isHttps != $https) {
// the asked protocol is different from the current protocol
// we use the standard port for the asked protocol
return '';
} else {
$port = $_SERVER['SERVER_PORT'];
}
if (($https && $port == '443' ) || (!$https && $port == '80' ))
return '';
return ':'.$port;
}
/**
* call it when you want to read the content of the body of a request
* when the method is not GET or POST
* @return mixed array of parameters or a single string when the content-type is unknown
* @since 1.2
*/
public function readHttpBody() {
$input = file_get_contents("php://input");
$values = array();
if (strpos($_SERVER["CONTENT_TYPE"], "application/x-www-url-encoded") == 0) {
parse_str($input, $values);
return $values;
}
else if (strpos($_SERVER["CONTENT_TYPE"], "multipart/form-data") == 0) {
if (!preg_match("/boundary=([a-zA-Z0-9]+)/", $_SERVER["CONTENT_TYPE"], $m))
return $input;
$parts = explode('--'.$m[1], $input);
foreach($parts as $part) {
if (trim($part) == '' || $part == '--')
continue;
list($header, $value) = explode("\r\n\r\n", $part);
if (preg_match('/content\-disposition\:(?: *)form\-data\;(?: *)name="([^"]+)"(\;(?: *)filename="([^"]+)")?/i', $header, $m)) {
if (isset($m[2]) && $m[3] != '')
$return[$m[1]] = array( $m[3], $value);
else
$return[$m[1]] = $value;
}
}
if (count($values))
return $values;
else
return $input;
}
else {
return $input;
}
}
private $_headers = null;
private function _generateHeaders() {
if (is_null($this->_headers)) {
if (function_exists('apache_response_headers')) {
$this->_headers = apache_request_headers();
}
else {
$this->_headers = array();
foreach($_SERVER as $key => $value) {
if (substr($key,0,5) == "HTTP_") {
$key = str_replace(" ", "-",
ucwords(strtolower(str_replace('_', ' ', substr($key,5)))));
$this->_headers[$key] = $value;
}
}
}
}
}
public function header($name) {
$this->_generateHeaders();
if (isset($this->_headers[$name])) {
return $this->_headers[$name];
}
return null;
}
public function headers() {
$this->_generateHeaders();
return $this->_headers;
}
}

Documentation generated on Mon, 19 Sep 2011 14:13:19 +0200 by phpDocumentor 1.4.3