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328 lines
9 KiB
PHP
328 lines
9 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 Cookie
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* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com/)
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* @version $Id: Cookie.php 9098 2008-03-30 19:29:10Z thomas $
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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require_once 'Zend/Uri/Http.php';
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/**
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* Zend_Http_Cookie is a class describing an HTTP cookie and all it's parameters.
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*
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* Zend_Http_Cookie is a class describing an HTTP cookie and all it's parameters. The
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* class also enables validating whether the cookie should be sent to the server in
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* a specified scenario according to the request URI, the expiry time and whether
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* session cookies should be used or not. Generally speaking cookies should be
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* contained in a Cookiejar object, or instantiated manually and added to an HTTP
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* request.
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*
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* See 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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* @copyright Copyright (c) 2005-2008 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_Cookie
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{
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/**
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* Cookie name
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*
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* @var string
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*/
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protected $name;
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/**
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* Cookie value
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*
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* @var string
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*/
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protected $value;
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/**
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* Cookie expiry date
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*
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* @var int
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*/
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protected $expires;
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/**
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* Cookie domain
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*
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* @var string
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*/
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protected $domain;
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/**
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* Cookie path
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*
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* @var string
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*/
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protected $path;
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/**
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* Whether the cookie is secure or not
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*
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* @var boolean
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*/
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protected $secure;
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/**
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* Cookie object constructor
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*
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* @todo Add validation of each one of the parameters (legal domain, etc.)
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*
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* @param string $name
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* @param string $value
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* @param int $expires
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* @param string $domain
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* @param string $path
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* @param bool $secure
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*/
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public function __construct($name, $value, $domain, $expires = null, $path = null, $secure = false)
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{
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if (preg_match("/[=,; \t\r\n\013\014]/", $name)) {
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require_once 'Zend/Http/Exception.php';
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throw new Zend_Http_Exception("Cookie name cannot contain these characters: =,; \\t\\r\\n\\013\\014 ({$name})");
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}
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if (! $this->name = (string) $name) {
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require_once 'Zend/Http/Exception.php';
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throw new Zend_Http_Exception('Cookies must have a name');
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}
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if (! $this->domain = (string) $domain) {
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require_once 'Zend/Http/Exception.php';
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throw new Zend_Http_Exception('Cookies must have a domain');
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}
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$this->value = (string) $value;
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$this->expires = ($expires === null ? null : (int) $expires);
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$this->path = ($path ? $path : '/');
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$this->secure = $secure;
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}
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/**
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* Get Cookie name
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*
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* @return string
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*/
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public function getName()
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{
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return $this->name;
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}
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/**
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* Get cookie value
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*
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* @return string
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*/
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public function getValue()
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{
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return $this->value;
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}
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/**
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* Get cookie domain
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*
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* @return string
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*/
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public function getDomain()
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{
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return $this->domain;
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}
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/**
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* Get the cookie path
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*
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* @return string
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*/
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public function getPath()
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{
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return $this->path;
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}
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/**
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* Get the expiry time of the cookie, or null if no expiry time is set
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*
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* @return int|null
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*/
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public function getExpiryTime()
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{
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return $this->expires;
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}
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/**
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* Check whether the cookie should only be sent over secure connections
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*
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* @return boolean
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*/
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public function isSecure()
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{
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return $this->secure;
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}
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/**
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* Check whether the cookie has expired
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*
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* Always returns false if the cookie is a session cookie (has no expiry time)
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*
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* @param int $now Timestamp to consider as "now"
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* @return boolean
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*/
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public function isExpired($now = null)
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{
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if ($now === null) $now = time();
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if (is_int($this->expires) && $this->expires < $now) {
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return true;
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} else {
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return false;
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}
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}
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/**
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* Check whether the cookie is a session cookie (has no expiry time set)
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*
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* @return boolean
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*/
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public function isSessionCookie()
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{
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return ($this->expires === null);
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}
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/**
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* Checks whether the cookie should be sent or not in a specific scenario
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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 $now Override the current time when checking for expiry time
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* @return boolean
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*/
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public function match($uri, $matchSessionCookies = true, $now = null)
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{
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if (is_string ($uri)) {
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$uri = Zend_Uri_Http::factory($uri);
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}
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// Make sure we have a valid Zend_Uri_Http object
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if (! ($uri->valid() && ($uri->getScheme() == 'http' || $uri->getScheme() =='https'))) {
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require_once 'Zend/Http/Exception.php';
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throw new Zend_Http_Exception('Passed URI is not a valid HTTP or HTTPS URI');
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}
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// Check that the cookie is secure (if required) and not expired
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if ($this->secure && $uri->getScheme() != 'https') return false;
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if ($this->isExpired($now)) return false;
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if ($this->isSessionCookie() && ! $matchSessionCookies) return false;
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// Validate domain and path
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// Domain is validated using tail match, while path is validated using head match
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$domain_preg = preg_quote($this->getDomain(), "/");
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if (! preg_match("/{$domain_preg}$/", $uri->getHost())) return false;
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$path_preg = preg_quote($this->getPath(), "/");
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if (! preg_match("/^{$path_preg}/", $uri->getPath())) return false;
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// If we didn't die until now, return true.
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return true;
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}
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/**
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* Get the cookie as a string, suitable for sending as a "Cookie" header in an
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* HTTP request
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*
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* @return string
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*/
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public function __toString()
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{
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return $this->name . '=' . urlencode($this->value) . ';';
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}
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/**
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* Generate a new Cookie object from a cookie string
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* (for example the value of the Set-Cookie HTTP header)
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*
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* @param string $cookieStr
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* @param Zend_Uri_Http|string $ref_uri Reference URI for default values (domain, path)
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* @return Zend_Http_Cookie A new Zend_Http_Cookie object or false on failure.
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*/
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public static function fromString($cookieStr, $ref_uri = null)
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{
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// Set default values
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if (is_string($ref_uri)) {
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$ref_uri = Zend_Uri_Http::factory($ref_uri);
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}
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$name = '';
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$value = '';
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$domain = '';
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$path = '';
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$expires = null;
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$secure = false;
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$parts = explode(';', $cookieStr);
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// If first part does not include '=', fail
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if (strpos($parts[0], '=') === false) return false;
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// Get the name and value of the cookie
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list($name, $value) = explode('=', trim(array_shift($parts)), 2);
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$name = trim($name);
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$value = urldecode(trim($value));
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// Set default domain and path
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if ($ref_uri instanceof Zend_Uri_Http) {
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$domain = $ref_uri->getHost();
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$path = $ref_uri->getPath();
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$path = substr($path, 0, strrpos($path, '/'));
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}
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// Set other cookie parameters
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foreach ($parts as $part) {
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$part = trim($part);
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if (strtolower($part) == 'secure') {
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$secure = true;
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continue;
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}
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$keyValue = explode('=', $part, 2);
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if (count($keyValue) == 2) {
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list($k, $v) = $keyValue;
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switch (strtolower($k)) {
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case 'expires':
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$expires = strtotime($v);
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break;
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case 'path':
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$path = $v;
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break;
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case 'domain':
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$domain = $v;
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break;
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default:
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break;
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}
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}
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}
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if ($name !== '') {
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return new Zend_Http_Cookie($name, $value, $domain, $expires, $path, $secure);
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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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