http.php

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<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to [e-mail] so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Controller
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */

/** Zend_Controller_Request_Exception */
require_once 'Zend/Controller/Request/Exception.php';

/** Zend_Controller_Request_Abstract */
require_once 'Zend/Controller/Request/Abstract.php';

/** Zend_Uri */
require_once 'Zend/Uri.php';

/**
 * Zend_Controller_Request_Http
 *
 * HTTP request object for use with Zend_Controller family.
 *
 * @uses Zend_Controller_Request_Abstract
 * @package Zend_Controller
 * @subpackage Request
 */
class Zend_Controller_Request_Http extends Zend_Controller_Request_Abstract
{
    /**
     * Allowed parameter sources
     * @var array
     */
    protected $_paramSources = array('_GET', '_POST');

    /**
     * REQUEST_URI
     * @var string;
     */
    protected $_requestUri;

    /**
     * Base URL of request
     * @var string
     */
    protected $_baseUrl = null;

    /**
     * Base path of request
     * @var string
     */
    protected $_basePath = null;

    /**
     * PATH_INFO
     * @var string
     */
    protected $_pathInfo = '';

    /**
     * Instance parameters
     * @var array
     */
    protected $_params = array();

    /**
     * Alias keys for request parameters
     * @var array
     */
    protected $_aliases = array();

    /**
     * Constructor
     *
     * If a $uri is passed, the object will attempt to populate itself using
     * that information.
     *
     * @param string|Zend_Uri $uri
     * @return void
     * @throws Zend_Controller_Request_Exception when invalid URI passed
     */
    public function __construct($uri = null)
    {
        if (null !== $uri) {
            if (!$uri instanceof Zend_Uri) {
                $uri = Zend_Uri::factory($uri);
            }
            if ($uri->valid()) {
                $path  = $uri->getPath();
                $query = $uri->getQuery();
                if (!empty($query)) {
                    $path .= '?' . $query;
                }

                $this->setRequestUri($path);
            } else {
                require_once 'Zend/Controller/Request/Exception.php';
                throw new Zend_Controller_Request_Exception('Invalid URI provided to constructor');
            }
        } else {
            $this->setRequestUri();
        }
    }

    /**
     * Access values contained in the superglobals as public members
     * Order of precedence: 1. GET, 2. POST, 3. COOKIE, 4. SERVER, 5. ENV
     *
     * @see http://msdn.microsoft.com/en-us/library/system.web.httprequest.item.aspx
     * @param string $key
     * @return mixed
     */
    public function __get($key)
    {
        switch (true) {
            case isset($this->_params[$key]):
                return $this->_params[$key];
            case isset($_GET[$key]):
                return $_GET[$key];
            case isset($_POST[$key]):
                return $_POST[$key];
            case isset($_COOKIE[$key]):
                return $_COOKIE[$key];
            case ($key == 'REQUEST_URI'):
                return $this->getRequestUri();
            case ($key == 'PATH_INFO'):
                return $this->getPathInfo();
            case isset($_SERVER[$key]):
                return $_SERVER[$key];
            case isset($_ENV[$key]):
                return $_ENV[$key];
            default:
                return null;
        }
    }

    /**
     * Alias to __get
     *
     * @param string $key
     * @return mixed
     */
    public function get($key)
    {
        return $this->__get($key);
    }

    /**
     * Set values
     *
     * In order to follow {@link __get()}, which operates on a number of
     * superglobals, setting values through overloading is not allowed and will
     * raise an exception. Use setParam() instead.
     *
     * @param string $key
     * @param mixed $value
     * @return void
     * @throws Zend_Controller_Request_Exception
     */
    public function __set($key, $value)
    {
        require_once 'Zend/Controller/Request/Exception.php';
        throw new Zend_Controller_Request_Exception('Setting values in superglobals not allowed; please use setParam()');
    }

    /**
     * Alias to __set()
     *
     * @param string $key
     * @param mixed $value
     * @return void
     */
    public function set($key, $value)
    {
        return $this->__set($key, $value);
    }

    /**
     * Check to see if a property is set
     *
     * @param string $key
     * @return boolean
     */
    public function __isset($key)
    {
        switch (true) {
            case isset($this->_params[$key]):
                return true;
            case isset($_GET[$key]):
                return true;
            case isset($_POST[$key]):
                return true;
            case isset($_COOKIE[$key]):
                return true;
            case isset($_SERVER[$key]):
                return true;
            case isset($_ENV[$key]):
                return true;
            default:
                return false;
        }
    }

    /**
     * Alias to __isset()
     *
     * @param string $key
     * @return boolean
     */
    public function has($key)
    {
        return $this->__isset($key);
    }

    /**
     * Retrieve a member of the $_GET superglobal
     *
     * If no $key is passed, returns the entire $_GET array.
     *
     * @todo How to retrieve from nested arrays
     * @param string $key
     * @param mixed $default Default value to use if key not found
     * @return mixed Returns null if key does not exist
     */
    public function getQuery($key = null, $default = null)
    {
        if (null === $key) {
            return $_GET;
        }

        return (isset($_GET[$key])) ? $_GET[$key] : $default;
    }

    /**
     * Retrieve a member of the $_POST superglobal
     *
     * If no $key is passed, returns the entire $_POST array.
     *
     * @todo How to retrieve from nested arrays
     * @param string $key
     * @param mixed $default Default value to use if key not found
     * @return mixed Returns null if key does not exist
     */
    public function getPost($key = null, $default = null)
    {
        if (null === $key) {
            return $_POST;
        }

        return (isset($_POST[$key])) ? $_POST[$key] : $default;
    }

    /**
     * Retrieve a member of the $_COOKIE superglobal
     *
     * If no $key is passed, returns the entire $_COOKIE array.
     *
     * @todo How to retrieve from nested arrays
     * @param string $key
     * @param mixed $default Default value to use if key not found
     * @return mixed Returns null if key does not exist
     */
    public function getCookie($key = null, $default = null)
    {
        if (null === $key) {
            return $_COOKIE;
        }

        return (isset($_COOKIE[$key])) ? $_COOKIE[$key] : $default;
    }

    /**
     * Retrieve a member of the $_SERVER superglobal
     *
     * If no $key is passed, returns the entire $_SERVER array.
     *
     * @param string $key
     * @param mixed $default Default value to use if key not found
     * @return mixed Returns null if key does not exist
     */
    public function getServer($key = null, $default = null)
    {
        if (null === $key) {
            return $_SERVER;
        }

        return (isset($_SERVER[$key])) ? $_SERVER[$key] : $default;
    }

    /**
     * Retrieve a member of the $_ENV superglobal
     *
     * If no $key is passed, returns the entire $_ENV array.
     *
     * @param string $key
     * @param mixed $default Default value to use if key not found
     * @return mixed Returns null if key does not exist
     */
    public function getEnv($key = null, $default = null)
    {
        if (null === $key) {
            return $_ENV;
        }

        return (isset($_ENV[$key])) ? $_ENV[$key] : $default;
    }

    /**
     * Set the REQUEST_URI on which the instance operates
     *
     * If no request URI is passed, uses the value in $_SERVER['REQUEST_URI'],
     * $_SERVER['HTTP_X_REWRITE_URL'], or $_SERVER['ORIG_PATH_INFO'] + $_SERVER['QUERY_STRING'].
     *
     * @param string $requestUri
     * @return Zend_Controller_Request_Http
     */
    public function setRequestUri($requestUri = null)
    {
        if ($requestUri === null) {
            if (isset($_SERVER['HTTP_X_REWRITE_URL'])) { // check this first so IIS will catch
                $requestUri = $_SERVER['HTTP_X_REWRITE_URL'];
            } elseif (isset($_SERVER['REQUEST_URI'])) {
                $requestUri = $_SERVER['REQUEST_URI'];
            } elseif (isset($_SERVER['ORIG_PATH_INFO'])) { // IIS 5.0, PHP as CGI
                $requestUri = $_SERVER['ORIG_PATH_INFO'];
                if (!empty($_SERVER['QUERY_STRING'])) {
                    $requestUri .= '?' . $_SERVER['QUERY_STRING'];
                }
            } else {
                return $this;
            }
        } elseif (!is_string($requestUri)) {
            return $this;
        } else {
            // Set GET items, if available
            $_GET = array();
            if (false !== ($pos = strpos($requestUri, '?'))) {
                // Get key => value pairs and set $_GET
                $query = substr($requestUri, $pos + 1);
                parse_str($query, $vars);
                $_GET = $vars;
            }
        }

        $this->_requestUri = $requestUri;
        return $this;
    }

    /**
     * Returns the REQUEST_URI taking into account
     * platform differences between Apache and IIS
     *
     * @return string
     */
    public function getRequestUri()
    {
        if (empty($this->_requestUri)) {
            $this->setRequestUri();
        }

        return $this->_requestUri;
    }

    /**
     * Set the base URL of the request; i.e., the segment leading to the script name
     *
     * E.g.:
     * - /admin
     * - /myapp
     * - /subdir/index.php
     *
     * Do not use the full URI when providing the base. The following are
     * examples of what not to use:
     * - http://example.com/admin (should be just /admin)
     * - http://example.com/subdir/index.php (should be just /subdir/index.php)
     *
     * If no $baseUrl is provided, attempts to determine the base URL from the
     * environment, using SCRIPT_FILENAME, SCRIPT_NAME, PHP_SELF, and
     * ORIG_SCRIPT_NAME in its determination.
     *
     * @param mixed $baseUrl
     * @return Zend_Controller_Request_Http
     */
    public function setBaseUrl($baseUrl = null)
    {
        if ((null !== $baseUrl) && !is_string($baseUrl)) {
            return $this;
        }

        if ($baseUrl === null) {
            $filename = basename($_SERVER['SCRIPT_FILENAME']);

            if (basename($_SERVER['SCRIPT_NAME']) === $filename) {
                $baseUrl = $_SERVER['SCRIPT_NAME'];
            } elseif (basename($_SERVER['PHP_SELF']) === $filename) {
                $baseUrl = $_SERVER['PHP_SELF'];
            } elseif (isset($_SERVER['ORIG_SCRIPT_NAME']) && basename($_SERVER['ORIG_SCRIPT_NAME']) === $filename) {
                $baseUrl = $_SERVER['ORIG_SCRIPT_NAME']; // 1and1 shared hosting compatibility
            } else {
                // Backtrack up the script_filename to find the portion matching
                // php_self
                $path    = $_SERVER['PHP_SELF'];
                $segs    = explode('/', trim($_SERVER['SCRIPT_FILENAME'], '/'));
                $segs    = array_reverse($segs);
                $index   = 0;
                $last    = count($segs);
                $baseUrl = '';
                do {
                    $seg     = $segs[$index];
                    $baseUrl = '/' . $seg . $baseUrl;
                    ++$index;
                } while (($last > $index) && (false !== ($pos = strpos($path, $baseUrl))) && (0 != $pos));
            }

            // Does the baseUrl have anything in common with the request_uri?
            $requestUri = $this->getRequestUri();

            if (0 === strpos($requestUri, $baseUrl)) {
                // full $baseUrl matches
                $this->_baseUrl = $baseUrl;
                return $this;
            }

            if (0 === strpos($requestUri, dirname($baseUrl))) {
                // directory portion of $baseUrl matches
                $this->_baseUrl = rtrim(dirname($baseUrl), '/');
                return $this;
            }

            if (!strpos($requestUri, basename($baseUrl))) {
                // no match whatsoever; set it blank
                $this->_baseUrl = '';