<?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 license@zend.com so we can send you a copy immediately.

 *

 * @category   Zend

 * @package    Zend_Http

 * @subpackage Client

 * @version    $Id$

 * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

/**

 * @see Zend_Loader

 */

require_once 'Zend/Loader.php';

/**

 * @see Zend_Uri

 */

require_once 'Zend/Uri.php';

/**

 * @see Zend_Http_Client_Adapter_Interface

 */

require_once 'Zend/Http/Client/Adapter/Interface.php';

/**

 * @see Zend_Http_Response

 */

require_once 'Zend/Http/Response.php';

/**

 * @see Zend_Http_Response_Stream

 */

require_once 'Zend/Http/Response/Stream.php';

/**

 * Zend_Http_Client is an implementation of an HTTP client in PHP. The client

 * supports basic features like sending different HTTP requests and handling

 * redirections, as well as more advanced features like proxy settings, HTTP

 * authentication and cookie persistence (using a Zend_Http_CookieJar object)

 *

 * @todo Implement proxy settings

 * @category   Zend

 * @package    Zend_Http

 * @subpackage Client

 * @throws     Zend_Http_Client_Exception

 * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

class Zend_Http_Client

{

    /**

     * HTTP request methods

     */

    const GET     = 'GET';

    const POST    = 'POST';

    const PUT     = 'PUT';

    const HEAD    = 'HEAD';

    const DELETE  = 'DELETE';

    const TRACE   = 'TRACE';

    const OPTIONS = 'OPTIONS';

    const CONNECT = 'CONNECT';

    const MERGE   = 'MERGE';

    const PATCH   = 'PATCH';

    /**

     * Supported HTTP Authentication methods

     */

    const AUTH_BASIC = 'basic';

    //const AUTH_DIGEST = 'digest'; <-- not implemented yet

    /**

     * HTTP protocol versions

     */

    const HTTP_1 = '1.1';

    const HTTP_0 = '1.0';

    /**

     * Content attributes

     */

    const CONTENT_TYPE   = 'Content-Type';

    const CONTENT_LENGTH = 'Content-Length';

    /**

     * POST data encoding methods

     */

    const ENC_URLENCODED = 'application/x-www-form-urlencoded';

    const ENC_FORMDATA   = 'multipart/form-data';

    /**

     * Value types for Body key/value pairs

     */

    const VTYPE_SCALAR  = 'SCALAR';

    const VTYPE_FILE    = 'FILE';

    /**

     * Configuration array, set using the constructor or using ::setConfig()

     *

     * @var array

     */

    protected $config = array(

        'maxredirects'    => 5,

        'strictredirects' => false,

        'useragent'       => 'Zend_Http_Client',

        'timeout'         => 10,

        'adapter'         => 'Zend_Http_Client_Adapter_Socket',

        'httpversion'     => self::HTTP_1,

        'keepalive'       => false,

        'storeresponse'   => true,

        'strict'          => true,

        'output_stream'   => false,

        'encodecookies'   => true,

        'rfc3986_strict'  => false

    );

    /**

     * The adapter used to perform the actual connection to the server

     *

     * @var Zend_Http_Client_Adapter_Interface

     */

    protected $adapter = null;

    /**

     * Request URI

     *

     * @var Zend_Uri_Http

     */

    protected $uri = null;

    /**

     * Associative array of request headers

     *

     * @var array

     */

    protected $headers = array();

    /**

     * HTTP request method

     *

     * @var string

     */

    protected $method = self::GET;

    /**

     * Associative array of GET parameters

     *

     * @var array

     */

    protected $paramsGet = array();

    /**

     * Associative array of POST parameters

     *

     * @var array

     */

    protected $paramsPost = array();

    /**

     * Request body content type (for POST requests)

     *

     * @var string

     */

    protected $enctype = null;

    /**

     * The raw post data to send. Could be set by setRawData($data, $enctype).

     *

     * @var string

     */

    protected $raw_post_data = null;

    /**

     * HTTP Authentication settings

     *

     * Expected to be an associative array with this structure:

     * $this->auth = array('user' => 'username', 'password' => 'password', 'type' => 'basic')

     * Where 'type' should be one of the supported authentication types (see the AUTH_*

     * constants), for example 'basic' or 'digest'.

     *

     * If null, no authentication will be used.

     *

     * @var array|null

     */

    protected $auth;

    /**

     * File upload arrays (used in POST requests)

     *

     * An associative array, where each element is of the format:

     *   'name' => array('filename.txt', 'text/plain', 'This is the actual file contents')

     *

     * @var array

     */

    protected $files = array();

    /**

     * Ordered list of keys from key/value pair data to include in body

     *

     * An associative array, where each element is of the format:

     *   '<field name>' => VTYPE_SCALAR | VTYPE_FILE

     *

     * @var array

     */

    protected $body_field_order = array();

    /**

     * The client's cookie jar

     *

     * @var Zend_Http_CookieJar

     */

    protected $cookiejar = null;

    /**

     * The last HTTP request sent by the client, as string

     *

     * @var string

     */

    protected $last_request = null;

    /**

     * The last HTTP response received by the client

     *

     * @var Zend_Http_Response

     */

    protected $last_response = null;

    /**

     * Redirection counter

     *

     * @var int

     */

    protected $redirectCounter = 0;

    /**

     * Status for unmasking GET array params

     *

     * @var boolean

     */

    protected $_unmaskStatus = false;

    /**

     * Status if the http_build_query function escapes brackets

     *

     * @var boolean

     */

    protected $_queryBracketsEscaped = true;

    /**

     * Fileinfo magic database resource

     *

     * This variable is populated the first time _detectFileMimeType is called

     * and is then reused on every call to this method

     *

     * @var resource

     */

    protected static $_fileInfoDb = null;

    /**

     * Constructor method. Will create a new HTTP client. Accepts the target

     * URL and optionally configuration array.

     *

     * @param Zend_Uri_Http|string $uri

     * @param array $config Configuration key-value pairs.

     */

    public function __construct($uri = null, $config = null)

    {

        if ($uri !== null) {

            $this->setUri($uri);

        }

        if ($config !== null) {

            $this->setConfig($config);

        }

        $this->_queryBracketsEscaped = version_compare(phpversion(), '5.1.3', '>=');

    }

    /**

     * Set the URI for the next request

     *

     * @param  Zend_Uri_Http|string $uri

     * @return Zend_Http_Client

     * @throws Zend_Http_Client_Exception

     */

    public function setUri($uri)

    {

        if ($uri instanceof Zend_Uri_Http) {

            // clone the URI in order to keep the passed parameter constant

            $uri = clone $uri;

        } elseif (is_string($uri)) {

            $uri = Zend_Uri::factory($uri);

        }

        if (!$uri instanceof Zend_Uri_Http) {

            /** @see Zend_Http_Client_Exception */

            require_once 'Zend/Http/Client/Exception.php';

            throw new Zend_Http_Client_Exception('Passed parameter is not a valid HTTP URI.');

        }

        // Set auth if username and password has been specified in the uri

        if ($uri->getUsername() && $uri->getPassword()) {

            $this->setAuth($uri->getUsername(), $uri->getPassword());

        }

        // We have no ports, set the defaults

        if (! $uri->getPort()) {

            $uri->setPort(($uri->getScheme() == 'https' ? 443 : 80));

        }

        $this->uri = $uri;

        return $this;

    }

    /**

     * Get the URI for the next request

     *

     * @param boolean $as_string If true, will return the URI as a string

     * @return Zend_Uri_Http|string

     */

    public function getUri($as_string = false)

    {

        if ($as_string && $this->uri instanceof Zend_Uri_Http) {

            return $this->uri->__toString();

        } else {

            return $this->uri;

        }

    }

    /**

     * Set configuration parameters for this HTTP client

     *

     * @param  Zend_Config | array $config

     * @return Zend_Http_Client

     * @throws Zend_Http_Client_Exception

     */

    public function setConfig($config = array())

    {

        if ($config instanceof Zend_Config) {

            $config = $config->toArray();

        } elseif (! is_array($config)) {

            /** @see Zend_Http_Client_Exception */

            require_once 'Zend/Http/Client/Exception.php';

            throw new Zend_Http_Client_Exception('Array or Zend_Config object expected, got ' . gettype($config));

        }

        foreach ($config as $k => $v) {

            $this->config[strtolower($k)] = $v;

        }

        // Pass configuration options to the adapter if it exists

        if ($this->adapter instanceof Zend_Http_Client_Adapter_Interface) {

            $this->adapter->setConfig($config);

        }

        return $this;

    }

    /**

     * Set the next request's method

     *

     * Validated the passed method and sets it. If we have files set for

     * POST requests, and the new method is not POST, the files are silently

     * dropped.

     *

     * @param string $method

     * @return Zend_Http_Client

     * @throws Zend_Http_Client_Exception

     */

    public function setMethod($method = self::GET)

    {

        if (! preg_match('/^[^\x00-\x1f\x7f-\xff\(\)<>@,;:\\\\"\/\[\]\?={}\s]+$/', $method)) {

            require_once 'Zend/Http/Client/Exception.php';

            throw new Zend_Http_Client_Exception("'{$method}' is not a valid HTTP request method.");

        }

        if (($method == self::POST

                || $method == self::PUT

                || $method == self::DELETE

                || $method == self::PATCH

                || $method == self::OPTIONS)

            && $this->enctype === null

        ) {

            $this->setEncType(self::ENC_URLENCODED);

        }

        $this->method = $method;

        return $this;

    }

    /**

     * Set one or more request headers

     *

     * This function can be used in several ways to set the client's request

     * headers:

     * 1. By providing two parameters: $name as the header to set (e.g. 'Host')

     *    and $value as it's value (e.g. 'www.example.com').

     * 2. By providing a single header string as the only parameter

     *    e.g. 'Host: www.example.com'

     * 3. By providing an array of headers as the first parameter

     *    e.g. array('host' => 'www.example.com', 'x-foo: bar'). In This case

     *    the function will call itself recursively for each array item.

     *

     * @param string|array $name Header name, full header string ('Header: value')

     *     or an array of headers

     * @param mixed $value Header value or null

     * @return Zend_Http_Client

     * @throws Zend_Http_Client_Exception

     */

    public function setHeaders($name, $value = null)

    {

        // If we got an array, go recursive!

        if (is_array($name)) {

            foreach ($name as $k => $v) {

                if (is_string($k)) {

                    $this->setHeaders($k, $v);

                } else {

                    $this->setHeaders($v, null);

                }

            }

        } else {

            // Check if $name needs to be split

            if ($value === null && (strpos($name, ':') > 0)) {

                list($name, $value) = explode(':', $name, 2);

            }

            // Make sure the name is valid if we are in strict mode

            if ($this->config['strict'] && (! preg_match('/^[a-zA-Z0-9-]+$/', $name))) {

                /** @see Zend_Http_Client_Exception */

                require_once 'Zend/Http/Client/Exception.php';

                throw new Zend_Http_Client_Exception("{$name} is not a valid HTTP header name");

            }

            $normalized_name = strtolower($name);

            // If $value is null or false, unset the header

            if ($value === null || $value === false) {

                unset($this->headers[$normalized_name]);