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380 lines
No EOL
12 KiB
PHP
380 lines
No EOL
12 KiB
PHP
<?php
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/**
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* Base include file for SimpleTest
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* @package SimpleTest
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* @subpackage WebTester
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* @version $Id: cookies.php 2011 2011-04-29 08:22:48Z pp11 $
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*/
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/**#@+
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* include other SimpleTest class files
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*/
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require_once(dirname(__FILE__) . '/url.php');
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/**#@-*/
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/**
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* Cookie data holder. Cookie rules are full of pretty
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* arbitary stuff. I have used...
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* http://wp.netscape.com/newsref/std/cookie_spec.html
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* http://www.cookiecentral.com/faq/
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* @package SimpleTest
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* @subpackage WebTester
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*/
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class SimpleCookie {
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private $host;
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private $name;
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private $value;
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private $path;
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private $expiry;
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private $is_secure;
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/**
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* Constructor. Sets the stored values.
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* @param string $name Cookie key.
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* @param string $value Value of cookie.
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* @param string $path Cookie path if not host wide.
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* @param string $expiry Expiry date as string.
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* @param boolean $is_secure Currently ignored.
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*/
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function __construct($name, $value = false, $path = false, $expiry = false, $is_secure = false) {
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$this->host = false;
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$this->name = $name;
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$this->value = $value;
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$this->path = ($path ? $this->fixPath($path) : "/");
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$this->expiry = false;
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if (is_string($expiry)) {
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$this->expiry = strtotime($expiry);
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} elseif (is_integer($expiry)) {
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$this->expiry = $expiry;
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}
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$this->is_secure = $is_secure;
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}
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/**
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* Sets the host. The cookie rules determine
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* that the first two parts are taken for
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* certain TLDs and three for others. If the
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* new host does not match these rules then the
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* call will fail.
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* @param string $host New hostname.
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* @return boolean True if hostname is valid.
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* @access public
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*/
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function setHost($host) {
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if ($host = $this->truncateHost($host)) {
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$this->host = $host;
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return true;
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}
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return false;
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}
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/**
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* Accessor for the truncated host to which this
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* cookie applies.
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* @return string Truncated hostname.
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* @access public
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*/
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function getHost() {
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return $this->host;
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}
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/**
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* Test for a cookie being valid for a host name.
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* @param string $host Host to test against.
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* @return boolean True if the cookie would be valid
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* here.
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*/
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function isValidHost($host) {
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return ($this->truncateHost($host) === $this->getHost());
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}
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/**
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* Extracts just the domain part that determines a
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* cookie's host validity.
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* @param string $host Host name to truncate.
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* @return string Domain or false on a bad host.
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* @access private
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*/
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protected function truncateHost($host) {
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$tlds = SimpleUrl::getAllTopLevelDomains();
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if (preg_match('/[a-z\-]+\.(' . $tlds . ')$/i', $host, $matches)) {
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return $matches[0];
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} elseif (preg_match('/[a-z\-]+\.[a-z\-]+\.[a-z\-]+$/i', $host, $matches)) {
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return $matches[0];
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}
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return false;
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}
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/**
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* Accessor for name.
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* @return string Cookie key.
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* @access public
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*/
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function getName() {
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return $this->name;
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}
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/**
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* Accessor for value. A deleted cookie will
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* have an empty string for this.
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* @return string Cookie value.
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* @access public
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*/
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function getValue() {
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return $this->value;
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}
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/**
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* Accessor for path.
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* @return string Valid cookie path.
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* @access public
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*/
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function getPath() {
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return $this->path;
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}
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/**
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* Tests a path to see if the cookie applies
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* there. The test path must be longer or
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* equal to the cookie path.
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* @param string $path Path to test against.
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* @return boolean True if cookie valid here.
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* @access public
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*/
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function isValidPath($path) {
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return (strncmp(
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$this->fixPath($path),
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$this->getPath(),
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strlen($this->getPath())) == 0);
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}
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/**
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* Accessor for expiry.
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* @return string Expiry string.
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* @access public
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*/
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function getExpiry() {
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if (! $this->expiry) {
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return false;
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}
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return gmdate("D, d M Y H:i:s", $this->expiry) . " GMT";
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}
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/**
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* Test to see if cookie is expired against
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* the cookie format time or timestamp.
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* Will give true for a session cookie.
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* @param integer/string $now Time to test against. Result
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* will be false if this time
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* is later than the cookie expiry.
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* Can be either a timestamp integer
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* or a cookie format date.
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* @access public
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*/
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function isExpired($now) {
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if (! $this->expiry) {
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return true;
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}
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if (is_string($now)) {
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$now = strtotime($now);
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}
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return ($this->expiry < $now);
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}
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/**
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* Ages the cookie by the specified number of
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* seconds.
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* @param integer $interval In seconds.
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* @public
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*/
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function agePrematurely($interval) {
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if ($this->expiry) {
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$this->expiry -= $interval;
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}
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}
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/**
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* Accessor for the secure flag.
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* @return boolean True if cookie needs SSL.
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* @access public
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*/
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function isSecure() {
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return $this->is_secure;
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}
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/**
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* Adds a trailing and leading slash to the path
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* if missing.
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* @param string $path Path to fix.
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* @access private
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*/
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protected function fixPath($path) {
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if (substr($path, 0, 1) != '/') {
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$path = '/' . $path;
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}
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if (substr($path, -1, 1) != '/') {
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$path .= '/';
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}
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return $path;
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}
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}
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/**
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* Repository for cookies. This stuff is a
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* tiny bit browser dependent.
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* @package SimpleTest
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* @subpackage WebTester
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*/
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class SimpleCookieJar {
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private $cookies;
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/**
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* Constructor. Jar starts empty.
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* @access public
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*/
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function __construct() {
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$this->cookies = array();
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}
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/**
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* Removes expired and temporary cookies as if
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* the browser was closed and re-opened.
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* @param string/integer $now Time to test expiry against.
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* @access public
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*/
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function restartSession($date = false) {
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$surviving_cookies = array();
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for ($i = 0; $i < count($this->cookies); $i++) {
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if (! $this->cookies[$i]->getValue()) {
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continue;
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}
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if (! $this->cookies[$i]->getExpiry()) {
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continue;
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}
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if ($date && $this->cookies[$i]->isExpired($date)) {
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continue;
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}
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$surviving_cookies[] = $this->cookies[$i];
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}
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$this->cookies = $surviving_cookies;
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}
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/**
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* Ages all cookies in the cookie jar.
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* @param integer $interval The old session is moved
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* into the past by this number
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* of seconds. Cookies now over
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* age will be removed.
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* @access public
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*/
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function agePrematurely($interval) {
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for ($i = 0; $i < count($this->cookies); $i++) {
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$this->cookies[$i]->agePrematurely($interval);
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}
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}
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/**
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* Sets an additional cookie. If a cookie has
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* the same name and path it is replaced.
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* @param string $name Cookie key.
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* @param string $value Value of cookie.
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* @param string $host Host upon which the cookie is valid.
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* @param string $path Cookie path if not host wide.
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* @param string $expiry Expiry date.
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* @access public
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*/
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function setCookie($name, $value, $host = false, $path = '/', $expiry = false) {
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$cookie = new SimpleCookie($name, $value, $path, $expiry);
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if ($host) {
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$cookie->setHost($host);
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}
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$this->cookies[$this->findFirstMatch($cookie)] = $cookie;
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}
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/**
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* Finds a matching cookie to write over or the
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* first empty slot if none.
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* @param SimpleCookie $cookie Cookie to write into jar.
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* @return integer Available slot.
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* @access private
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*/
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protected function findFirstMatch($cookie) {
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for ($i = 0; $i < count($this->cookies); $i++) {
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$is_match = $this->isMatch(
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$cookie,
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$this->cookies[$i]->getHost(),
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$this->cookies[$i]->getPath(),
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$this->cookies[$i]->getName());
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if ($is_match) {
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return $i;
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}
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}
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return count($this->cookies);
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}
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/**
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* Reads the most specific cookie value from the
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* browser cookies. Looks for the longest path that
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* matches.
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* @param string $host Host to search.
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* @param string $path Applicable path.
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* @param string $name Name of cookie to read.
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* @return string False if not present, else the
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* value as a string.
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* @access public
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*/
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function getCookieValue($host, $path, $name) {
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$longest_path = '';
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foreach ($this->cookies as $cookie) {
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if ($this->isMatch($cookie, $host, $path, $name)) {
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if (strlen($cookie->getPath()) > strlen($longest_path)) {
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$value = $cookie->getValue();
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$longest_path = $cookie->getPath();
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}
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}
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}
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return (isset($value) ? $value : false);
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}
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/**
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* Tests cookie for matching against search
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* criteria.
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* @param SimpleTest $cookie Cookie to test.
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* @param string $host Host must match.
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* @param string $path Cookie path must be shorter than
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* this path.
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* @param string $name Name must match.
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* @return boolean True if matched.
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* @access private
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*/
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protected function isMatch($cookie, $host, $path, $name) {
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if ($cookie->getName() != $name) {
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return false;
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}
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if ($host && $cookie->getHost() && ! $cookie->isValidHost($host)) {
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return false;
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}
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if (! $cookie->isValidPath($path)) {
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return false;
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}
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return true;
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}
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/**
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* Uses a URL to sift relevant cookies by host and
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* path. Results are list of strings of form "name=value".
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* @param SimpleUrl $url Url to select by.
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* @return array Valid name and value pairs.
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* @access public
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*/
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function selectAsPairs($url) {
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$pairs = array();
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foreach ($this->cookies as $cookie) {
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if ($this->isMatch($cookie, $url->getHost(), $url->getPath(), $cookie->getName())) {
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$pairs[] = $cookie->getName() . '=' . $cookie->getValue();
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}
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}
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return $pairs;
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}
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}
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?>
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