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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 license@zend.com so we can send you a copy immediately.
  *
  * @category   Zend
  * @package    Zend_Http
  * @subpackage CookieJar
  * @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_Uri
  */
 // require_once "Zend/Uri.php";
 /**
  * @see Zend_Http_Cookie
  */
 // require_once "Zend/Http/Cookie.php";
 /**
  * @see Zend_Http_Response
  */
 // require_once "Zend/Http/Response.php";
 
 /**
  * A Zend_Http_CookieJar object is designed to contain and maintain HTTP cookies, and should
  * be used along with Zend_Http_Client in order to manage cookies across HTTP requests and
  * responses.
  *
  * The class contains an array of Zend_Http_Cookie objects. Cookies can be added to the jar
  * automatically from a request or manually. Then, the jar can find and return the cookies
  * needed for a specific HTTP request.
  *
  * A special parameter can be passed to all methods of this class that return cookies: Cookies
  * can be returned either in their native form (as Zend_Http_Cookie objects) or as strings -
  * the later is suitable for sending as the value of the "Cookie" header in an HTTP request.
  * You can also choose, when returning more than one cookie, whether to get an array of strings
  * (by passing Zend_Http_CookieJar::COOKIE_STRING_ARRAY) or one unified string for all cookies
  * (by passing Zend_Http_CookieJar::COOKIE_STRING_CONCAT).
  *
  * @link       http://wp.netscape.com/newsref/std/cookie_spec.html for some specs.
  *
  * @category   Zend
  * @package    Zend_Http
  * @subpackage CookieJar
  * @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_CookieJar implements Countable, IteratorAggregate
 {
     /**
      * Return cookie(s) as a Zend_Http_Cookie object
      *
      */
     const COOKIE_OBJECT = 0;
 
     /**
      * Return cookie(s) as a string (suitable for sending in an HTTP request)
      *
      */
     const COOKIE_STRING_ARRAY = 1;
 
     /**
      * Return all cookies as one long string (suitable for sending in an HTTP request)
      *
      */
     const COOKIE_STRING_CONCAT = 2;
 
     /**
      * Return all cookies as one long string (strict mode)
      *  - Single space after the semi-colon separating each cookie
      *  - Remove trailing semi-colon, if any
      */
     const COOKIE_STRING_CONCAT_STRICT = 3;
 
     /**
      * Array storing cookies
      *
      * Cookies are stored according to domain and path:
      * $cookies
      *  + www.mydomain.com
      *    + /
      *      - cookie1
      *      - cookie2
      *    + /somepath
      *      - othercookie
      *  + www.otherdomain.net
      *    + /
      *      - alsocookie
      *
      * @var array
      */
     protected $cookies = array();
 
     /**
      * The Zend_Http_Cookie array
      *
      * @var array
      */
     protected $_rawCookies = array();
 
     /**
      * Construct a new CookieJar object
      *
      */
     public function __construct()
     { }
 
     /**
      * Add a cookie to the jar. Cookie should be passed either as a Zend_Http_Cookie object
      * or as a string - in which case an object is created from the string.
      *
      * @param Zend_Http_Cookie|string $cookie
      * @param Zend_Uri_Http|string    $ref_uri Optional reference URI (for domain, path, secure)
      * @param boolean $encodeValue
      */
     public function addCookie($cookie, $ref_uri = null, $encodeValue = true)
     {
         if (is_string($cookie)) {
             $cookie = Zend_Http_Cookie::fromString($cookie, $ref_uri, $encodeValue);
         }
 
         if ($cookie instanceof Zend_Http_Cookie) {
             $domain = $cookie->getDomain();
             $path = $cookie->getPath();
             if (! isset($this->cookies[$domain])) $this->cookies[$domain] = array();
             if (! isset($this->cookies[$domain][$path])) $this->cookies[$domain][$path] = array();
             $this->cookies[$domain][$path][$cookie->getName()] = $cookie;
             $this->_rawCookies[] = $cookie;
         } else {
             // require_once 'Zend/Http/Exception.php';
             throw new Zend_Http_Exception('Supplient argument is not a valid cookie string or object');
         }
     }
 
     /**
      * Parse an HTTP response, adding all the cookies set in that response
      * to the cookie jar.
      *
      * @param Zend_Http_Response $response
      * @param Zend_Uri_Http|string $ref_uri Requested URI
      * @param boolean $encodeValue
      */
     public function addCookiesFromResponse($response, $ref_uri, $encodeValue = true)
     {
         if (! $response instanceof Zend_Http_Response) {
             // require_once 'Zend/Http/Exception.php';
             throw new Zend_Http_Exception('$response is expected to be a Response object, ' .
                 gettype($response) . ' was passed');
         }
 
         $cookie_hdrs = $response->getHeader('Set-Cookie');
 
         if (is_array($cookie_hdrs)) {
             foreach ($cookie_hdrs as $cookie) {
                 $this->addCookie($cookie, $ref_uri, $encodeValue);
             }
         } elseif (is_string($cookie_hdrs)) {
             $this->addCookie($cookie_hdrs, $ref_uri, $encodeValue);
         }
     }
 
     /**
      * Get all cookies in the cookie jar as an array
      *
      * @param int $ret_as Whether to return cookies as objects of Zend_Http_Cookie or as strings
      * @return array|string
      */
     public function getAllCookies($ret_as = self::COOKIE_OBJECT)
     {
         $cookies = $this->_flattenCookiesArray($this->cookies, $ret_as);
         if($ret_as == self::COOKIE_STRING_CONCAT_STRICT) {
             $cookies = rtrim(trim($cookies), ';');
         }
         return $cookies;
     }
 
     /**
      * Return an array of all cookies matching a specific request according to the request URI,
      * whether session cookies should be sent or not, and the time to consider as "now" when
      * checking cookie expiry time.
      *
      * @param string|Zend_Uri_Http $uri URI to check against (secure, domain, path)
      * @param boolean $matchSessionCookies Whether to send session cookies
      * @param int $ret_as Whether to return cookies as objects of Zend_Http_Cookie or as strings
      * @param int $now Override the current time when checking for expiry time
      * @return array|string
      */
     public function getMatchingCookies($uri, $matchSessionCookies = true,
         $ret_as = self::COOKIE_OBJECT, $now = null)
     {
         if (is_string($uri)) $uri = Zend_Uri::factory($uri);
         if (! $uri instanceof Zend_Uri_Http) {
             // require_once 'Zend/Http/Exception.php';
             throw new Zend_Http_Exception("Invalid URI string or object passed");
         }
 
         // First, reduce the array of cookies to only those matching domain and path
         $cookies = $this->_matchDomain($uri->getHost());
         $cookies = $this->_matchPath($cookies, $uri->getPath());
         $cookies = $this->_flattenCookiesArray($cookies, self::COOKIE_OBJECT);
 
         // Next, run Cookie->match on all cookies to check secure, time and session mathcing
         $ret = array();
         foreach ($cookies as $cookie)
             if ($cookie->match($uri, $matchSessionCookies, $now))
                 $ret[] = $cookie;
 
         // Now, use self::_flattenCookiesArray again - only to convert to the return format ;)
         $ret = $this->_flattenCookiesArray($ret, $ret_as);
         if($ret_as == self::COOKIE_STRING_CONCAT_STRICT) {
             $ret = rtrim(trim($ret), ';');
         }
 
         return $ret;
     }
 
     /**
      * Get a specific cookie according to a URI and name
      *
      * @param Zend_Uri_Http|string $uri The uri (domain and path) to match
      * @param string $cookie_name The cookie's name
      * @param int $ret_as Whether to return cookies as objects of Zend_Http_Cookie or as strings
      * @return Zend_Http_Cookie|string
      */
     public function getCookie($uri, $cookie_name, $ret_as = self::COOKIE_OBJECT)
     {
         if (is_string($uri)) {
             $uri = Zend_Uri::factory($uri);
         }
 
         if (! $uri instanceof Zend_Uri_Http) {
             // require_once 'Zend/Http/Exception.php';
             throw new Zend_Http_Exception('Invalid URI specified');
         }
 
         // Get correct cookie path
         $path = $uri->getPath();
         $path = substr($path, 0, strrpos($path, '/'));
         if (! $path) $path = '/';
 
         if (isset($this->cookies[$uri->getHost()][$path][$cookie_name])) {
             $cookie = $this->cookies[$uri->getHost()][$path][$cookie_name];
 
             switch ($ret_as) {
                 case self::COOKIE_OBJECT:
                     return $cookie;
                     break;
 
                 case self::COOKIE_STRING_CONCAT_STRICT:
                     return rtrim(trim($cookie->__toString()), ';');
                     break;
 
                 case self::COOKIE_STRING_ARRAY:
                 case self::COOKIE_STRING_CONCAT:
                     return $cookie->__toString();
                     break;
 
                 default:
                     // require_once 'Zend/Http/Exception.php';
                     throw new Zend_Http_Exception("Invalid value passed for \$ret_as: {$ret_as}");
                     break;
             }
         } else {
             return false;
         }
     }
 
     /**
      * Helper function to recursivly flatten an array. Shoud be used when exporting the
      * cookies array (or parts of it)
      *
      * @param Zend_Http_Cookie|array $ptr
      * @param int $ret_as What value to return
      * @return array|string
      */
     protected function _flattenCookiesArray($ptr, $ret_as = self::COOKIE_OBJECT) {
         if (is_array($ptr)) {
             $ret = ($ret_as == self::COOKIE_STRING_CONCAT || $ret_as == self::COOKIE_STRING_CONCAT_STRICT) ? '' : array();
             foreach ($ptr as $item) {
                 if ($ret_as == self::COOKIE_STRING_CONCAT_STRICT) {
                     $postfix_combine = (!is_array($item) ? ' ' : '');
                     $ret .= $this->_flattenCookiesArray($item, $ret_as) . $postfix_combine;
                 } elseif ($ret_as == self::COOKIE_STRING_CONCAT) {
                     $ret .= $this->_flattenCookiesArray($item, $ret_as);
                 } else {
                     $ret = array_merge($ret, $this->_flattenCookiesArray($item, $ret_as));
                 }
             }
             return $ret;
         } elseif ($ptr instanceof Zend_Http_Cookie) {
             switch ($ret_as) {
                 case self::COOKIE_STRING_ARRAY:
                     return array($ptr->__toString());
                     break;
 
                 case self::COOKIE_STRING_CONCAT_STRICT:
                     // break intentionally omitted
 
                 case self::COOKIE_STRING_CONCAT:
                     return $ptr->__toString();
                     break;
 
                 case self::COOKIE_OBJECT:
                 default:
                     return array($ptr);
                     break;
             }
         }
 
         return null;
     }
 
     /**
      * Return a subset of the cookies array matching a specific domain
      *
      * @param string $domain
      * @return array
      */
     protected function _matchDomain($domain)
     {
         $ret = array();
 
         foreach (array_keys($this->cookies) as $cdom) {
             if (Zend_Http_Cookie::matchCookieDomain($cdom, $domain)) {
                 $ret[$cdom] = $this->cookies[$cdom];
             }
         }
 
         return $ret;
     }
 
     /**
      * Return a subset of a domain-matching cookies that also match a specified path
      *
      * @param array $dom_array
      * @param string $path
      * @return array
      */
     protected function _matchPath($domains, $path)
     {
         $ret = array();
 
         foreach ($domains as $dom => $paths_array) {
             foreach (array_keys($paths_array) as $cpath) {
                 if (Zend_Http_Cookie::matchCookiePath($cpath, $path)) {
                     if (! isset($ret[$dom])) {
                         $ret[$dom] = array();
                     }
 
                     $ret[$dom][$cpath] = $paths_array[$cpath];
                 }
             }
         }
 
         return $ret;
     }
 
     /**
      * Create a new CookieJar object and automatically load into it all the
      * cookies set in an Http_Response object. If $uri is set, it will be
      * considered as the requested URI for setting default domain and path
      * of the cookie.
      *
      * @param Zend_Http_Response $response HTTP Response object
      * @param Zend_Uri_Http|string $uri The requested URI
      * @return Zend_Http_CookieJar
      * @todo Add the $uri functionality.
      */
     public static function fromResponse(Zend_Http_Response $response, $ref_uri)
     {
         $jar = new self();
         $jar->addCookiesFromResponse($response, $ref_uri);
         return $jar;
     }
 
     /**
      * Required by Countable interface
      *
      * @return int
      */
     public function count()
     {
         return count($this->_rawCookies);
     }
 
     /**
      * Required by IteratorAggregate interface
      *
      * @return ArrayIterator
      */
     public function getIterator()
     {
         return new ArrayIterator($this->_rawCookies);
     }
 
     /**
      * Tells if the jar is empty of any cookie
      *
      * @return bool
      */
     public function isEmpty()
     {
         return count($this) == 0;
     }
 
     /**
      * Empties the cookieJar of any cookie
      *
      * @return Zend_Http_CookieJar
      */
     public function reset()
     {
         $this->cookies = $this->_rawCookies = array();
         return $this;
     }
 }