405 Zeilen
		
	
	
	
		
			13 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			405 Zeilen
		
	
	
	
		
			13 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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/**
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 * Zend Framework
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 *
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 * LICENSE
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 *
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 * This source file is subject to the new BSD license that is bundled
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 * with this package in the file LICENSE.txt.
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 * It is also available through the world-wide-web at this URL:
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 * http://framework.zend.com/license/new-bsd
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 * If you did not receive a copy of the license and are unable to
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 * obtain it through the world-wide-web, please send an email
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 * to license@zend.com so we can send you a copy immediately.
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 *
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 * @category   Zend
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 * @package    Zend_Http
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 * @subpackage CookieJar
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 * @version    $Id$
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 * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
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 * @license    http://framework.zend.com/license/new-bsd     New BSD License
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 */
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/**
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 * @see Zend_Uri
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 */
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require_once "Zend/Uri.php";
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/**
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 * @see Zend_Http_Cookie
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 */
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require_once "Zend/Http/Cookie.php";
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/**
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 * @see Zend_Http_Response
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 */
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require_once "Zend/Http/Response.php";
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/**
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 * A Zend_Http_CookieJar object is designed to contain and maintain HTTP cookies, and should
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 * be used along with Zend_Http_Client in order to manage cookies across HTTP requests and
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 * responses.
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 *
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 * The class contains an array of Zend_Http_Cookie objects. Cookies can be added to the jar
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 * automatically from a request or manually. Then, the jar can find and return the cookies
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 * needed for a specific HTTP request.
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 *
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 * A special parameter can be passed to all methods of this class that return cookies: Cookies
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 * can be returned either in their native form (as Zend_Http_Cookie objects) or as strings -
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 * the later is suitable for sending as the value of the "Cookie" header in an HTTP request.
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 * You can also choose, when returning more than one cookie, whether to get an array of strings
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 * (by passing Zend_Http_CookieJar::COOKIE_STRING_ARRAY) or one unified string for all cookies
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 * (by passing Zend_Http_CookieJar::COOKIE_STRING_CONCAT).
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 *
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 * @link       http://wp.netscape.com/newsref/std/cookie_spec.html for some specs.
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 *
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 * @category   Zend
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 * @package    Zend_Http
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 * @subpackage CookieJar
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 * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
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 * @license    http://framework.zend.com/license/new-bsd     New BSD License
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 */
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class Zend_Http_CookieJar implements Countable, IteratorAggregate
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{
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    /**
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     * Return cookie(s) as a Zend_Http_Cookie object
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     *
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     */
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    const COOKIE_OBJECT = 0;
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    /**
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     * Return cookie(s) as a string (suitable for sending in an HTTP request)
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     *
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     */
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    const COOKIE_STRING_ARRAY = 1;
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    /**
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     * Return all cookies as one long string (suitable for sending in an HTTP request)
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     *
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     */
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    const COOKIE_STRING_CONCAT = 2;
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    /**
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     * Array storing cookies
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     *
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     * Cookies are stored according to domain and path:
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     * $cookies
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     *  + www.mydomain.com
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     *    + /
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     *      - cookie1
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     *      - cookie2
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     *    + /somepath
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     *      - othercookie
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     *  + www.otherdomain.net
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     *    + /
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     *      - alsocookie
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     *
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     * @var array
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     */
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    protected $cookies = array();
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    /**
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     * The Zend_Http_Cookie array
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     *
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     * @var array
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     */
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    protected $_rawCookies = array();
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    /**
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     * Construct a new CookieJar object
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     *
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     */
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    public function __construct()
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    { }
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    /**
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     * Add a cookie to the jar. Cookie should be passed either as a Zend_Http_Cookie object
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     * or as a string - in which case an object is created from the string.
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     *
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     * @param Zend_Http_Cookie|string $cookie
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     * @param Zend_Uri_Http|string    $ref_uri Optional reference URI (for domain, path, secure)
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     * @param boolean $encodeValue
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     */
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    public function addCookie($cookie, $ref_uri = null, $encodeValue = true)
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    {
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        if (is_string($cookie)) {
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            $cookie = Zend_Http_Cookie::fromString($cookie, $ref_uri, $encodeValue);
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        }
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        if ($cookie instanceof Zend_Http_Cookie) {
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            $domain = $cookie->getDomain();
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            $path = $cookie->getPath();
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            if (! isset($this->cookies[$domain])) $this->cookies[$domain] = array();
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            if (! isset($this->cookies[$domain][$path])) $this->cookies[$domain][$path] = array();
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            $this->cookies[$domain][$path][$cookie->getName()] = $cookie;
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            $this->_rawCookies[] = $cookie;
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        } else {
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            require_once 'Zend/Http/Exception.php';
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            throw new Zend_Http_Exception('Supplient argument is not a valid cookie string or object');
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        }
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    }
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    /**
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     * Parse an HTTP response, adding all the cookies set in that response
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     * to the cookie jar.
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     *
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     * @param Zend_Http_Response $response
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     * @param Zend_Uri_Http|string $ref_uri Requested URI
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     * @param boolean $encodeValue
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     */
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    public function addCookiesFromResponse($response, $ref_uri, $encodeValue = true)
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    {
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        if (! $response instanceof Zend_Http_Response) {
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            require_once 'Zend/Http/Exception.php';
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            throw new Zend_Http_Exception('$response is expected to be a Response object, ' .
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                gettype($response) . ' was passed');
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        }
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        $cookie_hdrs = $response->getHeader('Set-Cookie');
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        if (is_array($cookie_hdrs)) {
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            foreach ($cookie_hdrs as $cookie) {
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                $this->addCookie($cookie, $ref_uri, $encodeValue);
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            }
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        } elseif (is_string($cookie_hdrs)) {
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            $this->addCookie($cookie_hdrs, $ref_uri, $encodeValue);
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        }
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    }
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    /**
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     * Get all cookies in the cookie jar as an array
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     *
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     * @param int $ret_as Whether to return cookies as objects of Zend_Http_Cookie or as strings
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     * @return array|string
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     */
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    public function getAllCookies($ret_as = self::COOKIE_OBJECT)
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    {
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        $cookies = $this->_flattenCookiesArray($this->cookies, $ret_as);
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        return $cookies;
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    }
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    /**
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     * Return an array of all cookies matching a specific request according to the request URI,
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     * whether session cookies should be sent or not, and the time to consider as "now" when
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     * checking cookie expiry time.
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     *
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     * @param string|Zend_Uri_Http $uri URI to check against (secure, domain, path)
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     * @param boolean $matchSessionCookies Whether to send session cookies
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     * @param int $ret_as Whether to return cookies as objects of Zend_Http_Cookie or as strings
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     * @param int $now Override the current time when checking for expiry time
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     * @return array|string
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     */
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    public function getMatchingCookies($uri, $matchSessionCookies = true,
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        $ret_as = self::COOKIE_OBJECT, $now = null)
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    {
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        if (is_string($uri)) $uri = Zend_Uri::factory($uri);
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        if (! $uri instanceof Zend_Uri_Http) {
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            require_once 'Zend/Http/Exception.php';
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            throw new Zend_Http_Exception("Invalid URI string or object passed");
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        }
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        // First, reduce the array of cookies to only those matching domain and path
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        $cookies = $this->_matchDomain($uri->getHost());
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        $cookies = $this->_matchPath($cookies, $uri->getPath());
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        $cookies = $this->_flattenCookiesArray($cookies, self::COOKIE_OBJECT);
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        // Next, run Cookie->match on all cookies to check secure, time and session mathcing
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        $ret = array();
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        foreach ($cookies as $cookie)
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            if ($cookie->match($uri, $matchSessionCookies, $now))
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                $ret[] = $cookie;
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        // Now, use self::_flattenCookiesArray again - only to convert to the return format ;)
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        $ret = $this->_flattenCookiesArray($ret, $ret_as);
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        return $ret;
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    }
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    /**
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     * Get a specific cookie according to a URI and name
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     *
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     * @param Zend_Uri_Http|string $uri The uri (domain and path) to match
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     * @param string $cookie_name The cookie's name
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     * @param int $ret_as Whether to return cookies as objects of Zend_Http_Cookie or as strings
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     * @return Zend_Http_Cookie|string
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     */
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    public function getCookie($uri, $cookie_name, $ret_as = self::COOKIE_OBJECT)
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    {
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        if (is_string($uri)) {
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            $uri = Zend_Uri::factory($uri);
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        }
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        if (! $uri instanceof Zend_Uri_Http) {
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            require_once 'Zend/Http/Exception.php';
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            throw new Zend_Http_Exception('Invalid URI specified');
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        }
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        // Get correct cookie path
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        $path = $uri->getPath();
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        $path = substr($path, 0, strrpos($path, '/'));
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        if (! $path) $path = '/';
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        if (isset($this->cookies[$uri->getHost()][$path][$cookie_name])) {
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            $cookie = $this->cookies[$uri->getHost()][$path][$cookie_name];
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            switch ($ret_as) {
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                case self::COOKIE_OBJECT:
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                    return $cookie;
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                    break;
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                case self::COOKIE_STRING_ARRAY:
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                case self::COOKIE_STRING_CONCAT:
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                    return $cookie->__toString();
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                    break;
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                default:
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                    require_once 'Zend/Http/Exception.php';
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                    throw new Zend_Http_Exception("Invalid value passed for \$ret_as: {$ret_as}");
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                    break;
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            }
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        } else {
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            return false;
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        }
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    }
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    /**
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     * Helper function to recursivly flatten an array. Shoud be used when exporting the
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     * cookies array (or parts of it)
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     *
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     * @param Zend_Http_Cookie|array $ptr
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     * @param int $ret_as What value to return
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     * @return array|string
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     */
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    protected function _flattenCookiesArray($ptr, $ret_as = self::COOKIE_OBJECT) {
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        if (is_array($ptr)) {
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            $ret = ($ret_as == self::COOKIE_STRING_CONCAT ? '' : array());
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            foreach ($ptr as $item) {
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                if ($ret_as == self::COOKIE_STRING_CONCAT) {
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                    $ret .= $this->_flattenCookiesArray($item, $ret_as);
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                } else {
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                    $ret = array_merge($ret, $this->_flattenCookiesArray($item, $ret_as));
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                }
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            }
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            return $ret;
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        } elseif ($ptr instanceof Zend_Http_Cookie) {
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            switch ($ret_as) {
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                case self::COOKIE_STRING_ARRAY:
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                    return array($ptr->__toString());
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                    break;
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                case self::COOKIE_STRING_CONCAT:
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                    return $ptr->__toString();
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                    break;
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                case self::COOKIE_OBJECT:
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                default:
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                    return array($ptr);
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                    break;
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            }
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        }
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        return null;
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    }
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    /**
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     * Return a subset of the cookies array matching a specific domain
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     *
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     * @param string $domain
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     * @return array
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     */
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    protected function _matchDomain($domain)
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    {
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        $ret = array();
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        foreach (array_keys($this->cookies) as $cdom) {
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            if (Zend_Http_Cookie::matchCookieDomain($cdom, $domain)) {
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                $ret[$cdom] = $this->cookies[$cdom];
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            }
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        }
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        return $ret;
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    }
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    /**
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     * Return a subset of a domain-matching cookies that also match a specified path
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     *
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     * @param array $dom_array
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     * @param string $path
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     * @return array
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     */
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    protected function _matchPath($domains, $path)
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    {
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        $ret = array();
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        foreach ($domains as $dom => $paths_array) {
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            foreach (array_keys($paths_array) as $cpath) {
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                if (Zend_Http_Cookie::matchCookiePath($cpath, $path)) {
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                    if (! isset($ret[$dom])) {
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                        $ret[$dom] = array();
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                    }
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                    $ret[$dom][$cpath] = $paths_array[$cpath];
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                }
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            }
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        }
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        return $ret;
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    }
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    /**
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     * Create a new CookieJar object and automatically load into it all the
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     * cookies set in an Http_Response object. If $uri is set, it will be
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     * considered as the requested URI for setting default domain and path
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     * of the cookie.
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     *
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     * @param Zend_Http_Response $response HTTP Response object
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     * @param Zend_Uri_Http|string $uri The requested URI
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     * @return Zend_Http_CookieJar
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     * @todo Add the $uri functionality.
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     */
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    public static function fromResponse(Zend_Http_Response $response, $ref_uri)
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    {
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        $jar = new self();
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        $jar->addCookiesFromResponse($response, $ref_uri);
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        return $jar;
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    }
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    /**
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     * Required by Countable interface
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     *
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     * @return int
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     */
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    public function count()
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    {
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        return count($this->_rawCookies);
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    }
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    /**
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     * Required by IteratorAggregate interface
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     *
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     * @return ArrayIterator
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     */
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    public function getIterator()
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    {
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        return new ArrayIterator($this->_rawCookies);
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    }
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    /**
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     * Tells if the jar is empty of any cookie
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     *
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     * @return bool
 | 
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     */
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    public function isEmpty()
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    {
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        return count($this) == 0;
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    }
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    /**
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     * Empties the cookieJar of any cookie
 | 
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     *
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     * @return Zend_Http_CookieJar
 | 
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     */
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    public function reset()
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    {
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        $this->cookies = $this->_rawCookies = array();
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        return $this;
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    }
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}
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