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<?php
/**
* Class for performing HTTP requests
*
* PHP versions 4 and 5
*
* LICENSE:
*
* Copyright (c) 2002-2007, Richard Heyes
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* o Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* o Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* o The names of the authors may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* @category HTTP
* @package HTTP_Request
* @author Richard Heyes <richard@phpguru.org>
* @author Alexey Borzov <avb@php.net>
* @copyright 2002-2007 Richard Heyes
* @license http://opensource.org/licenses/bsd-license.php New BSD License
* @version CVS: $Id$
* @link http://pear.php.net/package/HTTP_Request/
*/

/**
* PEAR and PEAR_Error classes (for error handling)
*/
require_once 'PEAR.php';
/**
* Socket class
*/
require_once 'Net/Socket.php';
/**
* URL handling class
*/
require_once 'Net/URL.php';

/**#@+
* Constants for HTTP request methods
*/
define('HTTP_REQUEST_METHOD_GET', 'GET', true);
define('HTTP_REQUEST_METHOD_HEAD', 'HEAD', true);
define('HTTP_REQUEST_METHOD_POST', 'POST', true);
define('HTTP_REQUEST_METHOD_PUT', 'PUT', true);
define('HTTP_REQUEST_METHOD_DELETE', 'DELETE', true);
define('HTTP_REQUEST_METHOD_OPTIONS', 'OPTIONS', true);
define('HTTP_REQUEST_METHOD_TRACE', 'TRACE', true);
/**#@-*/

/**#@+
* Constants for HTTP request error codes
*/
define('HTTP_REQUEST_ERROR_FILE', 1);
define('HTTP_REQUEST_ERROR_URL', 2);
define('HTTP_REQUEST_ERROR_PROXY', 4);
define('HTTP_REQUEST_ERROR_REDIRECTS', 8);
define('HTTP_REQUEST_ERROR_RESPONSE', 16);
define('HTTP_REQUEST_ERROR_GZIP_METHOD', 32);
define('HTTP_REQUEST_ERROR_GZIP_READ', 64);
define('HTTP_REQUEST_ERROR_GZIP_DATA', 128);
define('HTTP_REQUEST_ERROR_GZIP_CRC', 256);
/**#@-*/

/**#@+
* Constants for HTTP protocol versions
*/
define('HTTP_REQUEST_HTTP_VER_1_0', '1.0', true);
define('HTTP_REQUEST_HTTP_VER_1_1', '1.1', true);
/**#@-*/

if (extension_loaded('mbstring') && (2 & ini_get('mbstring.func_overload'))) {
   /**
* Whether string functions are overloaded by their mbstring equivalents
*/
    define('HTTP_REQUEST_MBSTRING', true);
} else {
   /**
* @ignore
*/
    define('HTTP_REQUEST_MBSTRING', false);
}

/**
* Class for performing HTTP requests
*
* Simple example (fetches yahoo.com and displays it):
* <code>
* $a = &new HTTP_Request('http://www.yahoo.com/');
* $a->sendRequest();
* echo $a->getResponseBody();
* </code>
*
* @category HTTP
* @package HTTP_Request
* @author Richard Heyes <richard@phpguru.org>
* @author Alexey Borzov <avb@php.net>
* @version Release: @package_version@
*/
class HTTP_Request
{
   /**#@+
* @access private
*/
    /**
* Instance of Net_URL
* @var Net_URL
*/
    var $_url;

    /**
* Type of request
* @var string
*/
    var $_method;

    /**
* HTTP Version
* @var string
*/
    var $_http;

    /**
* Request headers
* @var array
*/
    var $_requestHeaders;

    /**
* Basic Auth Username
* @var string
*/
    var $_user;

    /**
* Basic Auth Password
* @var string
*/
    var $_pass;

    /**
* Socket object
* @var Net_Socket
*/
    var $_sock;

    /**
* Proxy server
* @var string
*/
    var $_proxy_host;

    /**
* Proxy port
* @var integer
*/
    var $_proxy_port;

    /**
* Proxy username
* @var string
*/
    var $_proxy_user;

    /**
* Proxy password
* @var string
*/
    var $_proxy_pass;

    /**
* Post data
* @var array
*/
    var $_postData;

   /**
* Request body
* @var string
*/
    var $_body;

   /**
* A list of methods that MUST NOT have a request body, per RFC 2616
* @var array
*/
    var $_bodyDisallowed = array('TRACE');

   /**
* Methods having defined semantics for request body
*
* Content-Length header (indicating that the body follows, section 4.3 of
* RFC 2616) will be sent for these methods even if no body was added
*
* @var array
*/
    var $_bodyRequired = array('POST', 'PUT');

   /**
* Files to post
* @var array
*/
    var $_postFiles = array();

    /**
* Connection timeout.
* @var float
*/
    var $_timeout;

    /**
* HTTP_Response object
* @var HTTP_Response
*/
    var $_response;

    /**
* Whether to allow redirects
* @var boolean
*/
    var $_allowRedirects;

    /**
* Maximum redirects allowed
* @var integer
*/
    var $_maxRedirects;

    /**
* Current number of redirects
* @var integer
*/
    var $_redirects;

   /**
* Whether to append brackets [] to array variables
* @var bool
*/
    var $_useBrackets = true;

   /**
* Attached listeners
* @var array
*/
    var $_listeners = array();

   /**
* Whether to save response body in response object property
* @var bool
*/
    var $_saveBody = true;

   /**
* Timeout for reading from socket (array(seconds, microseconds))
* @var array
*/
    var $_readTimeout = null;

   /**
* Options to pass to Net_Socket::connect. See stream_context_create
* @var array
*/
    var $_socketOptions = null;
   /**#@-*/

    /**
* Constructor
*
* Sets up the object
* @param string The url to fetch/access
* @param array Associative array of parameters which can have the following keys:
* <ul>
* <li>method - Method to use, GET, POST etc (string)</li>
* <li>http - HTTP Version to use, 1.0 or 1.1 (string)</li>
* <li>user - Basic Auth username (string)</li>
* <li>pass - Basic Auth password (string)</li>
* <li>proxy_host - Proxy server host (string)</li>
* <li>proxy_port - Proxy server port (integer)</li>
* <li>proxy_user - Proxy auth username (string)</li>
* <li>proxy_pass - Proxy auth password (string)</li>
* <li>timeout - Connection timeout in seconds (float)</li>
* <li>allowRedirects - Whether to follow redirects or not (bool)</li>
* <li>maxRedirects - Max number of redirects to follow (integer)</li>
* <li>useBrackets - Whether to append [] to array variable names (bool)</li>
* <li>saveBody - Whether to save response body in response object property (bool)</li>
* <li>readTimeout - Timeout for reading / writing data over the socket (array (seconds, microseconds))</li>
* <li>socketOptions - Options to pass to Net_Socket object (array)</li>
* </ul>
* @access public
*/
    function HTTP_Request($url = '', $params = array())
    {
        $this->_method = HTTP_REQUEST_METHOD_GET;
        $this->_http = HTTP_REQUEST_HTTP_VER_1_1;
        $this->_requestHeaders = array();
        $this->_postData = array();
        $this->_body = null;

        $this->_user = null;
        $this->_pass = null;

        $this->_proxy_host = null;
        $this->_proxy_port = null;
        $this->_proxy_user = null;
        $this->_proxy_pass = null;

        $this->_allowRedirects = false;
        $this->_maxRedirects = 3;
        $this->_redirects = 0;

        $this->_timeout = null;
        $this->_response = null;

        foreach ($params as $key => $value) {
            $this->{'_' . $key} = $value;
        }

        if (!empty($url)) {
            $this->setURL($url);
        }

        // Default useragent
        $this->addHeader('User-Agent', 'PEAR HTTP_Request class ( http://pear.php.net/ )');

        // We don't do keep-alives by default
        $this->addHeader('Connection', 'close');

        // Basic authentication
        if (!empty($this->_user)) {
            $this->addHeader('Authorization', 'Basic ' . base64_encode($this->_user . ':' . $this->_pass));
        }

        // Proxy authentication (see bug #5913)
        if (!empty($this->_proxy_user)) {
            $this->addHeader('Proxy-Authorization', 'Basic ' . base64_encode($this->_proxy_user . ':' . $this->_proxy_pass));
        }

        // Use gzip encoding if possible
        if (HTTP_REQUEST_HTTP_VER_1_1 == $this->_http && extension_loaded('zlib')) {
            $this->addHeader('Accept-Encoding', 'gzip');
        }
    }

    /**
* Generates a Host header for HTTP/1.1 requests
*
* @access private
* @return string
*/
    function _generateHostHeader()
    {
        if ($this->_url->port != 80 AND strcasecmp($this->_url->protocol, 'http') == 0) {
            $host = $this->_url->host . ':' . $this->_url->port;

        } elseif ($this->_url->port != 443 AND strcasecmp($this->_url->protocol, 'https') == 0) {
            $host = $this->_url->host . ':' . $this->_url->port;

        } elseif ($this->_url->port == 443 AND strcasecmp($this->_url->protocol, 'https') == 0 AND strpos($this->_url->url, ':443') !== false) {
            $host = $this->_url->host . ':' . $this->_url->port;

        } else {
            $host = $this->_url->host;
        }

        return $host;
    }

    /**
* Resets the object to its initial state (DEPRECATED).
* Takes the same parameters as the constructor.
*
* @param string $url The url to be requested
* @param array $params Associative array of parameters
* (see constructor for details)
* @access public
* @deprecated deprecated since 1.2, call the constructor if this is necessary
*/
    function reset($url, $params = array())
    {
        $this->HTTP_Request($url, $params);
    }

    /**
* Sets the URL to be requested
*
* @param string The url to be requested
* @access public
*/
    function setURL($url)
    {
        $this->_url = &new Net_URL($url, $this->_useBrackets);

        if (!empty($this->_url->user) || !empty($this->_url->pass)) {
            $this->setBasicAuth($this->_url->user, $this->_url->pass);
        }

        if (HTTP_REQUEST_HTTP_VER_1_1 == $this->_http) {
            $this->addHeader('Host', $this->_generateHostHeader());
        }

        // set '/' instead of empty path rather than check later (see bug #8662)
        if (empty($this->_url->path)) {
            $this->_url->path = '/';
        }
    }

   /**
* Returns the current request URL
*
* @return string Current request URL
* @access public
*/
    function getUrl()
    {
        return empty($this->_url)? '': $this->_url->getUrl();
    }

    /**
* Sets a proxy to be used
*
* @param string Proxy host
* @param int Proxy port
* @param string Proxy username
* @param string Proxy password
* @access public
*/
    function setProxy($host, $port = 8080, $user = null, $pass = null)
    {
        $this->_proxy_host = $host;
        $this->_proxy_port = $port;
        $this->_proxy_user = $user;
        $this->_proxy_pass = $pass;

        if (!empty($user)) {
            $this->addHeader('Proxy-Authorization', 'Basic ' . base64_encode($user . ':' . $pass));
        }
    }

    /**
* Sets basic authentication parameters
*
* @param string Username
* @param string Password
*/
    function setBasicAuth($user, $pass)
    {
        $this->_user = $user;
        $this->_pass = $pass;

        $this->addHeader('Authorization', 'Basic ' . base64_encode($user . ':' . $pass));
    }

    /**
* Sets the method to be used, GET, POST etc.
*
* @param string Method to use. Use the defined constants for this
* @access public
*/
    function setMethod($method)
    {
        $this->_method = $method;
    }

    /**
* Sets the HTTP version to use, 1.0 or 1.1
*
* @param string Version to use. Use the defined constants for this
* @access public
*/
    function setHttpVer($http)
    {
        $this->_http = $http;
    }

    /**
* Adds a request header
*
* @param string Header name
* @param string Header value
* @access public
*/
    function addHeader($name, $value)
    {
        $this->_requestHeaders[strtolower($name)] = $value;
    }

    /**
* Removes a request header
*
* @param string Header name to remove
* @access public
*/
    function removeHeader($name)
    {
        if (isset($this->_requestHeaders[strtolower($name)])) {
            unset($this->_requestHeaders[strtolower($name)]);
        }
    }

    /**
* Adds a querystring parameter
*
* @param string Querystring parameter name
* @param string Querystring parameter value
* @param bool Whether the value is already urlencoded or not, default = not
* @access public
*/
    function addQueryString($name, $value, $preencoded = false)
    {
        $this->_url->addQueryString($name, $value, $preencoded);
    }

    /**
* Sets the querystring to literally what you supply
*
* @param string The querystring data. Should be of the format foo=bar&x=y etc
* @param bool Whether data is already urlencoded or not, default = already encoded
* @access public
*/
    function addRawQueryString($querystring, $preencoded = true)
    {
        $this->_url->addRawQueryString($querystring, $preencoded);
    }

    /**
* Adds postdata items
*
* @param string Post data name
* @param string Post data value
* @param bool Whether data is already urlencoded or not, default = not
* @access public
*/
    function addPostData($name, $value, $preencoded = false)
    {
        if ($preencoded) {
            $this->_postData[$name] = $value;
        } else {
            $this->_postData[$name] = $this->_arrayMapRecursive('urlencode', $value);
        }
    }

   /**
* Recursively applies the callback function to the value
*
* @param mixed Callback function
* @param mixed Value to process
* @access private
* @return mixed Processed value
*/
    function _arrayMapRecursive($callback, $value)
    {
        if (!is_array($value)) {
            return call_user_func($callback, $value);
        } else {
            $map = array();
            foreach ($value as $k => $v) {
                $map[$k] = $this->_arrayMapRecursive($callback, $v);
            }
            return $map;
        }
    }

   /**
* Adds a file to form-based file upload
*
* Used to emulate file upload via a HTML form. The method also sets
* Content-Type of HTTP request to 'multipart/form-data'.
*
* If you just want to send the contents of a file as the body of HTTP
* request you should use setBody() method.
*
* @access public
* @param string name of file-upload field
* @param mixed file name(s)
* @param mixed content-type(s) of file(s) being uploaded
* @return bool true on success
* @throws PEAR_Error
*/
    function addFile($inputName, $fileName, $contentType = 'application/octet-stream')
    {
        if (!is_array($fileName) && !is_readable($fileName)) {
            return PEAR::raiseError("File '{$fileName}' is not readable", HTTP_REQUEST_ERROR_FILE);
        } elseif (is_array($fileName)) {
            foreach ($fileName as $name) {
                if (!is_readable($name)) {
                    return PEAR::raiseError("File '{$name}' is not readable", HTTP_REQUEST_ERROR_FILE);
                }
            }
        }
        $this->addHeader('Content-Type', 'multipart/form-data');
        $this->_postFiles[$inputName] = array(
            'name' => $fileName,
            'type' => $contentType
        );
        return true;
    }

    /**
* Adds raw postdata (DEPRECATED)
*
* @param string The data
* @param bool Whether data is preencoded or not, default = already encoded
* @access public
* @deprecated deprecated since 1.3.0, method setBody() should be used instead
*/
    function addRawPostData($postdata, $preencoded = true)
    {
        $this->_body = $preencoded ? $postdata : urlencode($postdata);
    }

   /**
* Sets the request body (for POST, PUT and similar requests)
*
* @param string Request body
* @access public
*/
    function setBody($body)
    {
        $this->_body = $body;
    }

    /**
* Clears any postdata that has been added (DEPRECATED).
*
* Useful for multiple request scenarios.
*
* @access public
* @deprecated deprecated since 1.2
*/
    function clearPostData()
    {
        $this->_postData = null;
    }

    /**
* Appends a cookie to "Cookie:" header
*
* @param string $name cookie name
* @param string $value cookie value
* @access public
*/
    function addCookie($name, $value)
    {
        $cookies = isset($this->_requestHeaders['cookie']) ? $this->_requestHeaders['cookie']. '; ' : '';
        $this->addHeader('Cookie', $cookies . $name . '=' . $value);
    }

    /**
* Clears any cookies that have been added (DEPRECATED).
*
* Useful for multiple request scenarios
*
* @access public
* @deprecated deprecated since 1.2
*/
    function clearCookies()
    {
        $this->removeHeader('Cookie');
    }

    /**
* Sends the request
*
* @access public
* @param bool Whether to store response body in Response object property,
* set this to false if downloading a LARGE file and using a Listener
* @return mixed PEAR error on error, true otherwise
*/
    function sendRequest($saveBody = true)
    {
        if (!is_a($this->_url, 'Net_URL')) {
            return PEAR::raiseError('No URL given', HTTP_REQUEST_ERROR_URL);
        }

        $host = isset($this->_proxy_host) ? $this->_proxy_host : $this->_url->host;
        $port = isset($this->_proxy_port) ? $this->_proxy_port : $this->_url->port;

        if (strcasecmp($this->_url->protocol, 'https') == 0) {
            // Bug #14127, don't try connecting to HTTPS sites without OpenSSL
            if (version_compare(PHP_VERSION, '4.3.0', '<') || !extension_loaded('openssl')) {
                return PEAR::raiseError('Need PHP 4.3.0 or later with OpenSSL support for https:// requests',
                                        HTTP_REQUEST_ERROR_URL);
            } elseif (isset($this->_proxy_host)) {
                return PEAR::raiseError('HTTPS proxies are not supported', HTTP_REQUEST_ERROR_PROXY);
            }
            $host = 'ssl://' . $host;
        }

        // magic quotes may fuck up file uploads and chunked response processing
        $magicQuotes = ini_get('magic_quotes_runtime');
        ini_set('magic_quotes_runtime', false);

        // RFC 2068, section 19.7.1: A client MUST NOT send the Keep-Alive
        // connection token to a proxy server...
        if (isset($this->_proxy_host) && !empty($this->_requestHeaders['connection']) &&
            'Keep-Alive' == $this->_requestHeaders['connection'])
        {
            $this->removeHeader('connection');
        }

        $keepAlive = (HTTP_REQUEST_HTTP_VER_1_1 == $this->_http && empty($this->_requestHeaders['connection'])) ||
                     (!empty($this->_requestHeaders['connection']) && 'Keep-Alive' == $this->_requestHeaders['connection']);
        $sockets = &PEAR::getStaticProperty('HTTP_Request', 'sockets');
        $sockKey = $host . ':' . $port;
        unset($this->_sock);

        // There is a connected socket in the "static" property?
        if ($keepAlive && !empty($sockets[$sockKey]) &&
            !empty($sockets[$sockKey]->fp))
        {
            $this->_sock =& $sockets[$sockKey];
            $err = null;
        } else {
            $this->_notify('connect');
            $this->_sock =& new Net_Socket();
            $err = $this->_sock->connect($host, $port, null, $this->_timeout, $this->_socketOptions);
        }
        PEAR::isError($err) or $err = $this->_sock->write($this->_buildRequest());

        if (!PEAR::isError($err)) {
            if (!empty($this->_readTimeout)) {
                $this->_sock->setTimeout($this->_readTimeout[0], $this->_readTimeout[1]);
            }

            $this->_notify('sentRequest');

            // Read the response
            $this->_response = &new HTTP_Response($this->_sock, $this->_listeners);
            $err = $this->_response->process(
                $this->_saveBody && $saveBody,
                HTTP_REQUEST_METHOD_HEAD != $this->_method
            );

            if ($keepAlive) {
                $keepAlive = (isset($this->_response->_headers['content-length'])
                              || (isset($this->_response->_headers['transfer-encoding'])
                                  && strtolower($this->_response->_headers['transfer-encoding']) == 'chunked'));
                if ($keepAlive) {
                    if (isset($this->_response->_headers['connection'])) {
                        $keepAlive = strtolower($this->_response->_headers['connection']) == 'keep-alive';
                    } else {
                        $keepAlive = 'HTTP/'.HTTP_REQUEST_HTTP_VER_1_1 == $this->_response->_protocol;
                    }
                }
            }
        }

        ini_set('magic_quotes_runtime', $magicQuotes);

        if (PEAR::isError($err)) {
            return $err;
        }

        if (!$keepAlive) {
            $this->disconnect();
        // Store the connected socket in "static" property
        } elseif (empty($sockets[$sockKey]) || empty($sockets[$sockKey]->fp)) {
            $sockets[$sockKey] =& $this->_sock;
        }

        // Check for redirection
        if ( $this->_allowRedirects
            AND $this->_redirects <= $this->_maxRedirects
            AND $this->getResponseCode() > 300
            AND $this->getResponseCode() < 399
            AND !empty($this->_response->_headers['location'])) {


            $redirect = $this->_response->_headers['location'];

            // Absolute URL
            if (preg_match('/^https?:\/\//i', $redirect)) {
                $this->_url = &new Net_URL($redirect);
                $this->addHeader('Host', $this->_generateHostHeader());
            // Absolute path
            } elseif ($redirect{0} == '/') {
                $this->_url->path = $redirect;

            // Relative path
            } elseif (substr($redirect, 0, 3) == '../' OR substr($redirect, 0, 2) == './') {
                if (substr($this->_url->path, -1) == '/') {
                    $redirect = $this->_url->path . $redirect;
                } else {
                    $redirect = dirname($this->_url->path) . '/' . $redirect;
                }
                $redirect = Net_URL::resolvePath($redirect);
                $this->_url->path = $redirect;

            // Filename, no path
            } else {
                if (substr($this->_url->path, -1) == '/') {
                    $redirect = $this->_url->path . $redirect;
                } else {
                    $redirect = dirname($this->_url->path) . '/' . $redirect;
                }
                $this->_url->path = $redirect;
            }

            $this->_redirects++;
            return $this->sendRequest($saveBody);

        // Too many redirects
        } elseif ($this->_allowRedirects AND $this->_redirects > $this->_maxRedirects) {
            return PEAR::raiseError('Too many redirects', HTTP_REQUEST_ERROR_REDIRECTS);
        }

        return true;
    }

    /**
* Disconnect the socket, if connected. Only useful if using Keep-Alive.
*
* @access public
*/
    function disconnect()
    {
        if (!empty($this->_sock) && !empty($this->_sock->fp)) {
            $this->_notify('disconnect');
            $this->_sock->disconnect();
        }
    }

    /**
* Returns the response code
*
* @access public
* @return mixed Response code, false if not set
*/
    function getResponseCode()
    {
        return isset($this->_response->_code) ? $this->_response->_code : false;
    }

    /**
* Returns the response reason phrase
*
* @access public
* @return mixed Response reason phrase, false if not set
*/
    function getResponseReason()
    {
        return isset($this->_response->_reason) ? $this->_response->_reason : false;
    }

    /**
* Returns either the named header or all if no name given
*
* @access public
* @param string The header name to return, do not set to get all headers
* @return mixed either the value of $headername (false if header is not present)
* or an array of all headers
*/
    function getResponseHeader($headername = null)
    {
        if (!isset($headername)) {
            return isset($this->_response->_headers)? $this->_response->_headers: array();
        } else {
            $headername = strtolower($headername);
            return isset($this->_response->_headers[$headername]) ? $this->_response->_headers[$headername] : false;
        }
    }

    /**
* Returns the body of the response
*
* @access public
* @return mixed response body, false if not set
*/
    function getResponseBody()
    {
        return isset($this->_response->_body) ? $this->_response->_body : false;
    }

    /**
* Returns cookies set in response
*
* @access public
* @return mixed array of response cookies, false if none are present
*/
    function getResponseCookies()
    {
        return isset($this->_response->_cookies) ? $this->_response->_cookies : false;
    }

    /**
* Builds the request string
*
* @access private
* @return string The request string
*/
    function _buildRequest()
    {
        $separator = ini_get('arg_separator.output');
        ini_set('arg_separator.output', '&');
        $querystring = ($querystring = $this->_url->getQueryString()) ? '?' . $querystring : '';
        ini_set('arg_separator.output', $separator);

        $host = isset($this->_proxy_host) ? $this->_url->protocol . '://' . $this->_url->host : '';
        $port = (isset($this->_proxy_host) AND $this->_url->port != 80) ? ':' . $this->_url->port : '';
        $path = $this->_url->path . $querystring;
        $url = $host . $port . $path;

        if (!strlen($url)) {
            $url = '/';
        }

        $request = $this->_method . ' ' . $url . ' HTTP/' . $this->_http . "\r\n";

        if (in_array($this->_method, $this->_bodyDisallowed) ||
            (0 == strlen($this->_body) && (HTTP_REQUEST_METHOD_POST != $this->_method ||
             (empty($this->_postData) && empty($this->_postFiles)))))
        {
            $this->removeHeader('Content-Type');
        } else {
            if (empty($this->_requestHeaders['content-type'])) {
                // Add default content-type
                $this->addHeader('Content-Type', 'application/x-www-form-urlencoded');
            } elseif ('multipart/form-data' == $this->_requestHeaders['content-type']) {
                $boundary = 'HTTP_Request_' . md5(uniqid('request') . microtime());
                $this->addHeader('Content-Type', 'multipart/form-data; boundary=' . $boundary);
            }
        }

        // Request Headers
        if (!empty($this->_requestHeaders)) {
            foreach ($this->_requestHeaders as $name => $value) {
                $canonicalName = implode('-', array_map('ucfirst', explode('-', $name)));
                $request .= $canonicalName . ': ' . $value . "\r\n";
            }
        }

        // Method does not allow a body, simply add a final CRLF
        if (in_array($this->_method, $this->_bodyDisallowed)) {

            $request .= "\r\n";

        // Post data if it's an array
        } elseif (HTTP_REQUEST_METHOD_POST == $this->_method &&
                  (!empty($this->_postData) || !empty($this->_postFiles))) {

            // "normal" POST request
            if (!isset($boundary)) {
                $postdata = implode('&', array_map(
                    create_function('$a', 'return $a[0] . \'=\' . $a[1];'),
                    $this->_flattenArray('', $this->_postData)
                ));

            // multipart request, probably with file uploads
            } else {
                $postdata = '';
                if (!empty($this->_postData)) {
                    $flatData = $this->_flattenArray('', $this->_postData);
                    foreach ($flatData as $item) {
                        $postdata .= '--' . $boundary . "\r\n";
                        $postdata .= 'Content-Disposition: form-data; name="' . $item[0] . '"';
                        $postdata .= "\r\n\r\n" . urldecode($item[1]) . "\r\n";
                    }
                }
                foreach ($this->_postFiles as $name => $value) {
                    if (is_array($value['name'])) {
                        $varname = $name . ($this->_useBrackets? '[]': '');
                    } else {
                        $varname = $name;
                        $value['name'] = array($value['name']);
                    }
                    foreach ($value['name'] as $key => $filename) {
                        $fp = fopen($filename, 'r');
                        $basename = basename($filename);
                        $type = is_array($value['type'])? @$value['type'][$key]: $value['type'];

                        $postdata .= '--' . $boundary . "\r\n";
                        $postdata .= 'Content-Disposition: form-data; name="' . $varname . '"; filename="' . $basename . '"';
                        $postdata .= "\r\nContent-Type: " . $type;
                        $postdata .= "\r\n\r\n" . fread($fp, filesize($filename)) . "\r\n";
                        fclose($fp);
                    }
                }
                $postdata .= '--' . $boundary . "--\r\n";
            }
            $request .= 'Content-Length: ' .
                        (HTTP_REQUEST_MBSTRING? mb_strlen($postdata, 'iso-8859-1'): strlen($postdata)) .
                        "\r\n\r\n";
            $request .= $postdata;

        // Explicitly set request body
        } elseif (0 < strlen($this->_body)) {

            $request .= 'Content-Length: ' .
                        (HTTP_REQUEST_MBSTRING? mb_strlen($this->_body, 'iso-8859-1'): strlen($this->_body)) .
                        "\r\n\r\n";
            $request .= $this->_body;

        // No body: send a Content-Length header nonetheless (request #12900),
        // but do that only for methods that require a body (bug #14740)
        } else {

            if (in_array($this->_method, $this->_bodyRequired)) {
                $request .= "Content-Length: 0\r\n";
            }
            $request .= "\r\n";
        }

        return $request;
    }

   /**
* Helper function to change the (probably multidimensional) associative array
* into the simple one.
*
* @param string name for item
* @param mixed item's values
* @return array array with the following items: array('item name', 'item value');
* @access private
*/
    function _flattenArray($name, $values)
    {
        if (!is_array($values)) {
            return array(array($name, $values));
        } else {
            $ret = array();
            foreach ($values as $k => $v) {
                if (empty($name)) {
                    $newName = $k;
                } elseif ($this->_useBrackets) {
                    $newName = $name . '[' . $k . ']';
                } else {
                    $newName = $name;
                }
                $ret = array_merge($ret, $this->_flattenArray($newName, $v));
            }
            return $ret;
        }
    }


   /**
* Adds a Listener to the list of listeners that are notified of
* the object's events
*
* Events sent by HTTP_Request object
* - 'connect': on connection to server
* - 'sentRequest': after the request was sent
* - 'disconnect': on disconnection from server
*
* Events sent by HTTP_Response object
* - 'gotHeaders': after receiving response headers (headers are passed in $data)
* - 'tick': on receiving a part of response body (the part is passed in $data)
* - 'gzTick': on receiving a gzip-encoded part of response body (ditto)
* - 'gotBody': after receiving the response body (passes the decoded body in $data if it was gzipped)
*
* @param HTTP_Request_Listener listener to attach
* @return boolean whether the listener was successfully attached
* @access public
*/
    function attach(&$listener)
    {
        if (!is_a($listener, 'HTTP_Request_Listener')) {
            return false;
        }
        $this->_listeners[$listener->getId()] =& $listener;
        return true;
    }


   /**
* Removes a Listener from the list of listeners
*
* @param HTTP_Request_Listener listener to detach
* @return boolean whether the listener was successfully detached
* @access public
*/
    function detach(&$listener)
    {
        if (!is_a($listener, 'HTTP_Request_Listener') ||
            !isset($this->_listeners[$listener->getId()])) {
            return false;
        }
        unset($this->_listeners[$listener->getId()]);
        return true;
    }


   /**
* Notifies all registered listeners of an event.
*
* @param string Event name
* @param mixed Additional data
* @access private
* @see HTTP_Request::attach()
*/
    function _notify($event, $data = null)
    {
        foreach (array_keys($this->_listeners) as $id) {
            $this->_listeners[$id]->update($this, $event, $data);
        }
    }
}


/**
* Response class to complement the Request class
*
* @category HTTP
* @package HTTP_Request
* @author Richard Heyes <richard@phpguru.org>
* @author Alexey Borzov <avb@php.net>
* @version Release: @package_version@
*/
class HTTP_Response
{
    /**
* Socket object
* @var Net_Socket
*/
    var $_sock;

    /**
* Protocol
* @var string
*/
    var $_protocol;

    /**
* Return code
* @var string
*/
    var $_code;

    /**
* Response reason phrase
* @var string
*/
    var $_reason;

    /**
* Response headers
* @var array
*/
    var $_headers;

    /**
* Cookies set in response
* @var array
*/
    var $_cookies;

    /**
* Response body
* @var string
*/
    var $_body = '';

   /**
* Used by _readChunked(): remaining length of the current chunk
* @var string
*/
    var $_chunkLength = 0;

   /**
* Attached listeners
* @var array
*/
    var $_listeners = array();

   /**
* Bytes left to read from message-body
* @var null|int
*/
    var $_toRead;

    /**
* Constructor
*
* @param Net_Socket socket to read the response from
* @param array listeners attached to request
*/
    function HTTP_Response(&$sock, &$listeners)
    {
        $this->_sock =& $sock;
        $this->_listeners =& $listeners;
    }


   /**
* Processes a HTTP response
*
* This extracts response code, headers, cookies and decodes body if it
* was encoded in some way
*
* @access public
* @param bool Whether to store response body in object property, set
* this to false if downloading a LARGE file and using a Listener.
* This is assumed to be true if body is gzip-encoded.
* @param bool Whether the response can actually have a message-body.
* Will be set to false for HEAD requests.
* @throws PEAR_Error
* @return mixed true on success, PEAR_Error in case of malformed response
*/
    function process($saveBody = true, $canHaveBody = true)
    {
        do {
            $line = $this->_sock->readLine();
            if (!preg_match('!^(HTTP/\d\.\d) (\d{3})(?: (.+))?!', $line, $s)) {
                return PEAR::raiseError('Malformed response', HTTP_REQUEST_ERROR_RESPONSE);
            } else {
                $this->_protocol = $s[1];
                $this->_code = intval($s[2]);
                $this->_reason = empty($s[3])? null: $s[3];
            }
            while ('' !== ($header = $this->_sock->readLine())) {
                $this->_processHeader($header);
            }
        } while (100 == $this->_code);

        $this->_notify('gotHeaders', $this->_headers);

        // RFC 2616, section 4.4:
        // 1. Any response message which "MUST NOT" include a message-body ...
        // is always terminated by the first empty line after the header fields
        // 3. ... If a message is received with both a
        // Transfer-Encoding header field and a Content-Length header field,
        // the latter MUST be ignored.
        $canHaveBody = $canHaveBody && $this->_code >= 200 &&
                       $this->_code != 204 && $this->_code != 304;

        // If response body is present, read it and decode
        $chunked = isset($this->_headers['transfer-encoding']) && ('chunked' == $this->_headers['transfer-encoding']);
        $gzipped = isset($this->_headers['content-encoding']) && ('gzip' == $this->_headers['content-encoding']);
        $hasBody = false;
        if ($canHaveBody && ($chunked || !isset($this->_headers['content-length']) ||
                0 != $this->_headers['content-length']))
        {
            if ($chunked || !isset($this->_headers['content-length'])) {
                $this->_toRead = null;
            } else {
                $this->_toRead = $this->_headers['content-length'];
            }
            while (!$this->_sock->eof() && (is_null($this->_toRead) || 0 < $this->_toRead)) {
                if ($chunked) {
                    $data = $this->_readChunked();
                } elseif (is_null($this->_toRead)) {
                    $data = $this->_sock->read(4096);
                } else {
                    $data = $this->_sock->read(min(4096, $this->_toRead));
                    $this->_toRead -= HTTP_REQUEST_MBSTRING? mb_strlen($data, 'iso-8859-1'): strlen($data);
                }
                if ('' == $data && (!$this->_chunkLength || $this->_sock->eof())) {
                    break;
                } else {
                    $hasBody = true;
                    if ($saveBody || $gzipped) {
                        $this->_body .= $data;
                    }
                    $this->_notify($gzipped? 'gzTick': 'tick', $data);
                }
            }
        }

        if ($hasBody) {
            // Uncompress the body if needed
            if ($gzipped) {
                $body = $this->_decodeGzip($this->_body);
                if (PEAR::isError($body)) {
                    return $body;
                }
                $this->_body = $body;
                $this->_notify('gotBody', $this->_body);
            } else {
                $this->_notify('gotBody');
            }
        }
        return true;
    }


   /**
* Processes the response header
*
* @access private
* @param string HTTP header
*/
    function _processHeader($header)
    {
        if (false === strpos($header, ':')) {
            return;
        }
        list($headername, $headervalue) = explode(':', $header, 2);
        $headername = strtolower($headername);
        $headervalue = ltrim($headervalue);

        if ('set-cookie' != $headername) {
            if (isset($this->_headers[$headername])) {
                $this->_headers[$headername] .= ',' . $headervalue;
            } else {
                $this->_headers[$headername] = $headervalue;
            }
        } else {
            $this->_parseCookie($headervalue);
        }
    }


   /**
* Parse a Set-Cookie header to fill $_cookies array
*
* @access private
* @param string value of Set-Cookie header
*/
    function _parseCookie($headervalue)
    {
        $cookie = array(
            'expires' => null,
            'domain' => null,
            'path' => null,
            'secure' => false
        );

        // Only a name=value pair
        if (!strpos($headervalue, ';')) {
            $pos = strpos($headervalue, '=');
            $cookie['name'] = trim(substr($headervalue, 0, $pos));
            $cookie['value'] = trim(substr($headervalue, $pos + 1));

        // Some optional parameters are supplied
        } else {
            $elements = explode(';', $headervalue);
            $pos = strpos($elements[0], '=');
            $cookie['name'] = trim(substr($elements[0], 0, $pos));
            $cookie['value'] = trim(substr($elements[0], $pos + 1));

            for ($i = 1; $i < count($elements); $i++) {
                if (false === strpos($elements[$i], '=')) {
                    $elName = trim($elements[$i]);
                    $elValue = null;
                } else {
                    list ($elName, $elValue) = array_map('trim', explode('=', $elements[$i]));
                }
                $elName = strtolower($elName);
                if ('secure' == $elName) {
                    $cookie['secure'] = true;
                } elseif ('expires' == $elName) {
                    $cookie['expires'] = str_replace('"', '', $elValue);
                } elseif ('path' == $elName || 'domain' == $elName) {
                    $cookie[$elName] = urldecode($elValue);
                } else {
                    $cookie[$elName] = $elValue;
                }
            }
        }
        $this->_cookies[] = $cookie;
    }


   /**
* Read a part of response body encoded with chunked Transfer-Encoding
*
* @access private
* @return string
*/
    function _readChunked()
    {
        // at start of the next chunk?
        if (0 == $this->_chunkLength) {
            $line = $this->_sock->readLine();
            if (preg_match('/^([0-9a-f]+)/i', $line, $matches)) {
                $this->_chunkLength = hexdec($matches[1]);
                // Chunk with zero length indicates the end
                if (0 == $this->_chunkLength) {
                    $this->_sock->readLine(); // make this an eof()
                    return '';
                }
            } else {
                return '';
            }
        }
        $data = $this->_sock->read($this->_chunkLength);
        $this->_chunkLength -= HTTP_REQUEST_MBSTRING? mb_strlen($data, 'iso-8859-1'): strlen($data);
        if (0 == $this->_chunkLength) {
            $this->_sock->readLine(); // Trailing CRLF
        }
        return $data;
    }


   /**
* Notifies all registered listeners of an event.
*
* @param string Event name
* @param mixed Additional data
* @access private
* @see HTTP_Request::_notify()
*/
    function _notify($event, $data = null)
    {
        foreach (array_keys($this->_listeners) as $id) {
            $this->_listeners[$id]->update($this, $event, $data);
        }
    }


   /**
* Decodes the message-body encoded by gzip
*
* The real decoding work is done by gzinflate() built-in function, this
* method only parses the header and checks data for compliance with
* RFC 1952
*
* @access private
* @param string gzip-encoded data
* @return string decoded data
*/
    function _decodeGzip($data)
    {
        if (HTTP_REQUEST_MBSTRING) {
            $oldEncoding = mb_internal_encoding();
            mb_internal_encoding('iso-8859-1');
        }
        $length = strlen($data);
        // If it doesn't look like gzip-encoded data, don't bother
        if (18 > $length || strcmp(substr($data, 0, 2), "\x1f\x8b")) {
            return $data;
        }
        $method = ord(substr($data, 2, 1));
        if (8 != $method) {
            return PEAR::raiseError('_decodeGzip(): unknown compression method', HTTP_REQUEST_ERROR_GZIP_METHOD);
        }
        $flags = ord(substr($data, 3, 1));
        if ($flags & 224) {
            return PEAR::raiseError('_decodeGzip(): reserved bits are set', HTTP_REQUEST_ERROR_GZIP_DATA);
        }

        // header is 10 bytes minimum. may be longer, though.
        $headerLength = 10;
        // extra fields, need to skip 'em
        if ($flags & 4) {
            if ($length - $headerLength - 2 < 8) {
                return PEAR::raiseError('_decodeGzip(): data too short', HTTP_REQUEST_ERROR_GZIP_DATA);
            }
            $extraLength = unpack('v', substr($data, 10, 2));
            if ($length - $headerLength - 2 - $extraLength[1] < 8) {
                return PEAR::raiseError('_decodeGzip(): data too short', HTTP_REQUEST_ERROR_GZIP_DATA);
            }
            $headerLength += $extraLength[1] + 2;
        }
        // file name, need to skip that
        if ($flags & 8) {
            if ($length - $headerLength - 1 < 8) {
                return PEAR::raiseError('_decodeGzip(): data too short', HTTP_REQUEST_ERROR_GZIP_DATA);
            }
            $filenameLength = strpos(substr($data, $headerLength), chr(0));
            if (false === $filenameLength || $length - $headerLength - $filenameLength - 1 < 8) {
                return PEAR::raiseError('_decodeGzip(): data too short', HTTP_REQUEST_ERROR_GZIP_DATA);
            }
            $headerLength += $filenameLength + 1;
        }
        // comment, need to skip that also
        if ($flags & 16) {
            if ($length - $headerLength - 1 < 8) {
                return PEAR::raiseError('_decodeGzip(): data too short', HTTP_REQUEST_ERROR_GZIP_DATA);
            }
            $commentLength = strpos(substr($data, $headerLength), chr(0));
            if (false === $commentLength || $length - $headerLength - $commentLength - 1 < 8) {
                return PEAR::raiseError('_decodeGzip(): data too short', HTTP_REQUEST_ERROR_GZIP_DATA);
            }
            $headerLength += $commentLength + 1;
        }
        // have a CRC for header. let's check
        if ($flags & 1) {
            if ($length - $headerLength - 2 < 8) {
                return PEAR::raiseError('_decodeGzip(): data too short', HTTP_REQUEST_ERROR_GZIP_DATA);
            }
            $crcReal = 0xffff & crc32(substr($data, 0, $headerLength));
            $crcStored = unpack('v', substr($data, $headerLength, 2));
            if ($crcReal != $crcStored[1]) {
                return PEAR::raiseError('_decodeGzip(): header CRC check failed', HTTP_REQUEST_ERROR_GZIP_CRC);
            }
            $headerLength += 2;
        }
        // unpacked data CRC and size at the end of encoded data
        $tmp = unpack('V2', substr($data, -8));
        $dataCrc = $tmp[1];
        $dataSize = $tmp[2];

        // finally, call the gzinflate() function
        // don't pass $dataSize to gzinflate, see bugs #13135, #14370
        $unpacked = gzinflate(substr($data, $headerLength, -8));
        if (false === $unpacked) {
            return PEAR::raiseError('_decodeGzip(): gzinflate() call failed', HTTP_REQUEST_ERROR_GZIP_READ);
        } elseif ($dataSize != strlen($unpacked)) {
            return PEAR::raiseError('_decodeGzip(): data size check failed', HTTP_REQUEST_ERROR_GZIP_READ);
        } elseif ((0xffffffff & $dataCrc) != (0xffffffff & crc32($unpacked))) {
            return PEAR::raiseError('_decodeGzip(): data CRC check failed', HTTP_REQUEST_ERROR_GZIP_CRC);
        }
        if (HTTP_REQUEST_MBSTRING) {
            mb_internal_encoding($oldEncoding);
        }
        return $unpacked;
    }
} // End class HTTP_Response
?>
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