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<?php
/**
* Base include file for SimpleTest
* @package SimpleTest
* @subpackage WebTester
* @version $Id: cookies.php 1398 2006-09-08 19:31:03Z xue $
*/
/**#@+
* include other SimpleTest class files
*/
require_once(dirname(__FILE__) . '/url.php');
/**#@-*/
/**
* Cookie data holder. Cookie rules are full of pretty
* arbitary stuff. I have used...
* http://wp.netscape.com/newsref/std/cookie_spec.html
* http://www.cookiecentral.com/faq/
* @package SimpleTest
* @subpackage WebTester
*/
class SimpleCookie {
protected $_host;
protected $_name;
protected $_value;
protected $_path;
protected $_expiry;
protected $_is_secure;
/**
* Constructor. Sets the stored values.
* @param string $name Cookie key.
* @param string $value Value of cookie.
* @param string $path Cookie path if not host wide.
* @param string $expiry Expiry date as string.
* @param boolean $is_secure Currently ignored.
*/
function SimpleCookie($name, $value = false, $path = false, $expiry = false, $is_secure = false) {
$this->_host = false;
$this->_name = $name;
$this->_value = $value;
$this->_path = ($path ? $this->_fixPath($path) : "/");
$this->_expiry = false;
if (is_string($expiry)) {
$this->_expiry = strtotime($expiry);
} elseif (is_integer($expiry)) {
$this->_expiry = $expiry;
}
$this->_is_secure = $is_secure;
}
/**
* Sets the host. The cookie rules determine
* that the first two parts are taken for
* certain TLDs and three for others. If the
* new host does not match these rules then the
* call will fail.
* @param string $host New hostname.
* @return boolean True if hostname is valid.
* @access public
*/
function setHost($host) {
if ($host = $this->_truncateHost($host)) {
$this->_host = $host;
return true;
}
return false;
}
/**
* Accessor for the truncated host to which this
* cookie applies.
* @return string Truncated hostname.
* @access public
*/
function getHost() {
return $this->_host;
}
/**
* Test for a cookie being valid for a host name.
* @param string $host Host to test against.
* @return boolean True if the cookie would be valid
* here.
*/
function isValidHost($host) {
return ($this->_truncateHost($host) === $this->getHost());
}
/**
* Extracts just the domain part that determines a
* cookie's host validity.
* @param string $host Host name to truncate.
* @return string Domain or false on a bad host.
* @access private
*/
function _truncateHost($host) {
$tlds = SimpleUrl::getAllTopLevelDomains();
if (preg_match('/[a-z\-]+\.(' . $tlds . ')$/i', $host, $matches)) {
return $matches[0];
} elseif (preg_match('/[a-z\-]+\.[a-z\-]+\.[a-z\-]+$/i', $host, $matches)) {
return $matches[0];
}
return false;
}
/**
* Accessor for name.
* @return string Cookie key.
* @access public
*/
function getName() {
return $this->_name;
}
/**
* Accessor for value. A deleted cookie will
* have an empty string for this.
* @return string Cookie value.
* @access public
*/
function getValue() {
return $this->_value;
}
/**
* Accessor for path.
* @return string Valid cookie path.
* @access public
*/
function getPath() {
return $this->_path;
}
/**
* Tests a path to see if the cookie applies
* there. The test path must be longer or
* equal to the cookie path.
* @param string $path Path to test against.
* @return boolean True if cookie valid here.
* @access public
*/
function isValidPath($path) {
return (strncmp(
$this->_fixPath($path),
$this->getPath(),
strlen($this->getPath())) == 0);
}
/**
* Accessor for expiry.
* @return string Expiry string.
* @access public
*/
function getExpiry() {
if (! $this->_expiry) {
return false;
}
return gmdate("D, d M Y H:i:s", $this->_expiry) . " GMT";
}
/**
* Test to see if cookie is expired against
* the cookie format time or timestamp.
* Will give true for a session cookie.
* @param integer/string $now Time to test against. Result
* will be false if this time
* is later than the cookie expiry.
* Can be either a timestamp integer
* or a cookie format date.
* @access public
*/
function isExpired($now) {
if (! $this->_expiry) {
return true;
}
if (is_string($now)) {
$now = strtotime($now);
}
return ($this->_expiry < $now);
}
/**
* Ages the cookie by the specified number of
* seconds.
* @param integer $interval In seconds.
* @public
*/
function agePrematurely($interval) {
if ($this->_expiry) {
$this->_expiry -= $interval;
}
}
/**
* Accessor for the secure flag.
* @return boolean True if cookie needs SSL.
* @access public
*/
function isSecure() {
return $this->_is_secure;
}
/**
* Adds a trailing and leading slash to the path
* if missing.
* @param string $path Path to fix.
* @access private
*/
function _fixPath($path) {
if (substr($path, 0, 1) != '/') {
$path = '/' . $path;
}
if (substr($path, -1, 1) != '/') {
$path .= '/';
}
return $path;
}
}
/**
* Repository for cookies. This stuff is a
* tiny bit browser dependent.
* @package SimpleTest
* @subpackage WebTester
*/
class SimpleCookieJar {
protected $_cookies;
/**
* Constructor. Jar starts empty.
* @access public
*/
function SimpleCookieJar() {
$this->_cookies = array();
}
/**
* Removes expired and temporary cookies as if
* the browser was closed and re-opened.
* @param string/integer $now Time to test expiry against.
* @access public
*/
function restartSession($date = false) {
$surviving_cookies = array();
for ($i = 0; $i < count($this->_cookies); $i++) {
if (! $this->_cookies[$i]->getValue()) {
continue;
}
if (! $this->_cookies[$i]->getExpiry()) {
continue;
}
if ($date && $this->_cookies[$i]->isExpired($date)) {
continue;
}
$surviving_cookies[] = $this->_cookies[$i];
}
$this->_cookies = $surviving_cookies;
}
/**
* Ages all cookies in the cookie jar.
* @param integer $interval The old session is moved
* into the past by this number
* of seconds. Cookies now over
* age will be removed.
* @access public
*/
function agePrematurely($interval) {
for ($i = 0; $i < count($this->_cookies); $i++) {
$this->_cookies[$i]->agePrematurely($interval);
}
}
/**
* Sets an additional cookie. If a cookie has
* the same name and path it is replaced.
* @param string $name Cookie key.
* @param string $value Value of cookie.
* @param string $host Host upon which the cookie is valid.
* @param string $path Cookie path if not host wide.
* @param string $expiry Expiry date.
* @access public
*/
function setCookie($name, $value, $host = false, $path = '/', $expiry = false) {
$cookie = new SimpleCookie($name, $value, $path, $expiry);
if ($host) {
$cookie->setHost($host);
}
$this->_cookies[$this->_findFirstMatch($cookie)] = $cookie;
}
/**
* Finds a matching cookie to write over or the
* first empty slot if none.
* @param SimpleCookie $cookie Cookie to write into jar.
* @return integer Available slot.
* @access private
*/
function _findFirstMatch($cookie) {
for ($i = 0; $i < count($this->_cookies); $i++) {
$is_match = $this->_isMatch(
$cookie,
$this->_cookies[$i]->getHost(),
$this->_cookies[$i]->getPath(),
$this->_cookies[$i]->getName());
if ($is_match) {
return $i;
}
}
return count($this->_cookies);
}
/**
* Reads the most specific cookie value from the
* browser cookies. Looks for the longest path that
* matches.
* @param string $host Host to search.
* @param string $path Applicable path.
* @param string $name Name of cookie to read.
* @return string False if not present, else the
* value as a string.
* @access public
*/
function getCookieValue($host, $path, $name) {
$longest_path = '';
foreach ($this->_cookies as $cookie) {
if ($this->_isMatch($cookie, $host, $path, $name)) {
if (strlen($cookie->getPath()) > strlen($longest_path)) {
$value = $cookie->getValue();
$longest_path = $cookie->getPath();
}
}
}
return (isset($value) ? $value : false);
}
/**
* Tests cookie for matching against search
* criteria.
* @param SimpleTest $cookie Cookie to test.
* @param string $host Host must match.
* @param string $path Cookie path must be shorter than
* this path.
* @param string $name Name must match.
* @return boolean True if matched.
* @access private
*/
function _isMatch($cookie, $host, $path, $name) {
if ($cookie->getName() != $name) {
return false;
}
if ($host && $cookie->getHost() && ! $cookie->isValidHost($host)) {
return false;
}
if (! $cookie->isValidPath($path)) {
return false;
}
return true;
}
/**
* Uses a URL to sift relevant cookies by host and
* path. Results are list of strings of form "name=value".
* @param SimpleUrl $url Url to select by.
* @return array Valid name and value pairs.
* @access public
*/
function selectAsPairs($url) {
$pairs = array();
foreach ($this->_cookies as $cookie) {
if ($this->_isMatch($cookie, $url->getHost(), $url->getPath(), $cookie->getName())) {
$pairs[] = $cookie->getName() . '=' . $cookie->getValue();
}
}
return $pairs;
}
}
?>
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