332 lines
11 KiB
PHP
332 lines
11 KiB
PHP
<?php
|
|
/**
|
|
* Base include file for SimpleTest
|
|
* @package SimpleTest
|
|
* @subpackage WebTester
|
|
* @version $Id: user_agent.php 1723 2008-04-08 00:34:10Z lastcraft $
|
|
*/
|
|
|
|
/**#@+
|
|
* include other SimpleTest class files
|
|
*/
|
|
require_once(dirname(__FILE__) . '/cookies.php');
|
|
require_once(dirname(__FILE__) . '/http.php');
|
|
require_once(dirname(__FILE__) . '/encoding.php');
|
|
require_once(dirname(__FILE__) . '/authentication.php');
|
|
/**#@-*/
|
|
|
|
if (! defined('DEFAULT_MAX_REDIRECTS')) {
|
|
define('DEFAULT_MAX_REDIRECTS', 3);
|
|
}
|
|
if (! defined('DEFAULT_CONNECTION_TIMEOUT')) {
|
|
define('DEFAULT_CONNECTION_TIMEOUT', 15);
|
|
}
|
|
|
|
/**
|
|
* Fetches web pages whilst keeping track of
|
|
* cookies and authentication.
|
|
* @package SimpleTest
|
|
* @subpackage WebTester
|
|
*/
|
|
class SimpleUserAgent {
|
|
var $_cookie_jar;
|
|
var $_cookies_enabled = true;
|
|
var $_authenticator;
|
|
var $_max_redirects = DEFAULT_MAX_REDIRECTS;
|
|
var $_proxy = false;
|
|
var $_proxy_username = false;
|
|
var $_proxy_password = false;
|
|
var $_connection_timeout = DEFAULT_CONNECTION_TIMEOUT;
|
|
var $_additional_headers = array();
|
|
|
|
/**
|
|
* Starts with no cookies, realms or proxies.
|
|
* @access public
|
|
*/
|
|
function SimpleUserAgent() {
|
|
$this->_cookie_jar = &new SimpleCookieJar();
|
|
$this->_authenticator = &new SimpleAuthenticator();
|
|
}
|
|
|
|
/**
|
|
* Removes expired and temporary cookies as if
|
|
* the browser was closed and re-opened. Authorisation
|
|
* has to be obtained again as well.
|
|
* @param string/integer $date Time when session restarted.
|
|
* If omitted then all persistent
|
|
* cookies are kept.
|
|
* @access public
|
|
*/
|
|
function restart($date = false) {
|
|
$this->_cookie_jar->restartSession($date);
|
|
$this->_authenticator->restartSession();
|
|
}
|
|
|
|
/**
|
|
* Adds a header to every fetch.
|
|
* @param string $header Header line to add to every
|
|
* request until cleared.
|
|
* @access public
|
|
*/
|
|
function addHeader($header) {
|
|
$this->_additional_headers[] = $header;
|
|
}
|
|
|
|
/**
|
|
* Ages the cookies by the specified time.
|
|
* @param integer $interval Amount in seconds.
|
|
* @access public
|
|
*/
|
|
function ageCookies($interval) {
|
|
$this->_cookie_jar->agePrematurely($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) {
|
|
$this->_cookie_jar->setCookie($name, $value, $host, $path, $expiry);
|
|
}
|
|
|
|
/**
|
|
* Reads the most specific cookie value from the
|
|
* browser cookies.
|
|
* @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) {
|
|
return $this->_cookie_jar->getCookieValue($host, $path, $name);
|
|
}
|
|
|
|
/**
|
|
* Reads the current cookies within the base URL.
|
|
* @param string $name Key of cookie to find.
|
|
* @param SimpleUrl $base Base URL to search from.
|
|
* @return string/boolean Null if there is no base URL, false
|
|
* if the cookie is not set.
|
|
* @access public
|
|
*/
|
|
function getBaseCookieValue($name, $base) {
|
|
if (! $base) {
|
|
return null;
|
|
}
|
|
return $this->getCookieValue($base->getHost(), $base->getPath(), $name);
|
|
}
|
|
|
|
/**
|
|
* Switches off cookie sending and recieving.
|
|
* @access public
|
|
*/
|
|
function ignoreCookies() {
|
|
$this->_cookies_enabled = false;
|
|
}
|
|
|
|
/**
|
|
* Switches back on the cookie sending and recieving.
|
|
* @access public
|
|
*/
|
|
function useCookies() {
|
|
$this->_cookies_enabled = true;
|
|
}
|
|
|
|
/**
|
|
* Sets the socket timeout for opening a connection.
|
|
* @param integer $timeout Maximum time in seconds.
|
|
* @access public
|
|
*/
|
|
function setConnectionTimeout($timeout) {
|
|
$this->_connection_timeout = $timeout;
|
|
}
|
|
|
|
/**
|
|
* Sets the maximum number of redirects before
|
|
* a page will be loaded anyway.
|
|
* @param integer $max Most hops allowed.
|
|
* @access public
|
|
*/
|
|
function setMaximumRedirects($max) {
|
|
$this->_max_redirects = $max;
|
|
}
|
|
|
|
/**
|
|
* Sets proxy to use on all requests for when
|
|
* testing from behind a firewall. Set URL
|
|
* to false to disable.
|
|
* @param string $proxy Proxy URL.
|
|
* @param string $username Proxy username for authentication.
|
|
* @param string $password Proxy password for authentication.
|
|
* @access public
|
|
*/
|
|
function useProxy($proxy, $username, $password) {
|
|
if (! $proxy) {
|
|
$this->_proxy = false;
|
|
return;
|
|
}
|
|
if ((strncmp($proxy, 'http://', 7) != 0) && (strncmp($proxy, 'https://', 8) != 0)) {
|
|
$proxy = 'http://'. $proxy;
|
|
}
|
|
$this->_proxy = &new SimpleUrl($proxy);
|
|
$this->_proxy_username = $username;
|
|
$this->_proxy_password = $password;
|
|
}
|
|
|
|
/**
|
|
* Test to see if the redirect limit is passed.
|
|
* @param integer $redirects Count so far.
|
|
* @return boolean True if over.
|
|
* @access private
|
|
*/
|
|
function _isTooManyRedirects($redirects) {
|
|
return ($redirects > $this->_max_redirects);
|
|
}
|
|
|
|
/**
|
|
* Sets the identity for the current realm.
|
|
* @param string $host Host to which realm applies.
|
|
* @param string $realm Full name of realm.
|
|
* @param string $username Username for realm.
|
|
* @param string $password Password for realm.
|
|
* @access public
|
|
*/
|
|
function setIdentity($host, $realm, $username, $password) {
|
|
$this->_authenticator->setIdentityForRealm($host, $realm, $username, $password);
|
|
}
|
|
|
|
/**
|
|
* Fetches a URL as a response object. Will keep trying if redirected.
|
|
* It will also collect authentication realm information.
|
|
* @param string/SimpleUrl $url Target to fetch.
|
|
* @param SimpleEncoding $encoding Additional parameters for request.
|
|
* @return SimpleHttpResponse Hopefully the target page.
|
|
* @access public
|
|
*/
|
|
function &fetchResponse($url, $encoding) {
|
|
if ($encoding->getMethod() != 'POST') {
|
|
$url->addRequestParameters($encoding);
|
|
$encoding->clear();
|
|
}
|
|
$response = &$this->_fetchWhileRedirected($url, $encoding);
|
|
if ($headers = $response->getHeaders()) {
|
|
if ($headers->isChallenge()) {
|
|
$this->_authenticator->addRealm(
|
|
$url,
|
|
$headers->getAuthentication(),
|
|
$headers->getRealm());
|
|
}
|
|
}
|
|
return $response;
|
|
}
|
|
|
|
/**
|
|
* Fetches the page until no longer redirected or
|
|
* until the redirect limit runs out.
|
|
* @param SimpleUrl $url Target to fetch.
|
|
* @param SimpelFormEncoding $encoding Additional parameters for request.
|
|
* @return SimpleHttpResponse Hopefully the target page.
|
|
* @access private
|
|
*/
|
|
function &_fetchWhileRedirected($url, $encoding) {
|
|
$redirects = 0;
|
|
do {
|
|
$response = &$this->_fetch($url, $encoding);
|
|
if ($response->isError()) {
|
|
return $response;
|
|
}
|
|
$headers = $response->getHeaders();
|
|
$location = new SimpleUrl($headers->getLocation());
|
|
$url = $location->makeAbsolute($url);
|
|
if ($this->_cookies_enabled) {
|
|
$headers->writeCookiesToJar($this->_cookie_jar, $url);
|
|
}
|
|
if (! $headers->isRedirect()) {
|
|
break;
|
|
}
|
|
$encoding = new SimpleGetEncoding();
|
|
} while (! $this->_isTooManyRedirects(++$redirects));
|
|
return $response;
|
|
}
|
|
|
|
/**
|
|
* Actually make the web request.
|
|
* @param SimpleUrl $url Target to fetch.
|
|
* @param SimpleFormEncoding $encoding Additional parameters for request.
|
|
* @return SimpleHttpResponse Headers and hopefully content.
|
|
* @access protected
|
|
*/
|
|
function &_fetch($url, $encoding) {
|
|
$request = &$this->_createRequest($url, $encoding);
|
|
$response = &$request->fetch($this->_connection_timeout);
|
|
return $response;
|
|
}
|
|
|
|
/**
|
|
* Creates a full page request.
|
|
* @param SimpleUrl $url Target to fetch as url object.
|
|
* @param SimpleFormEncoding $encoding POST/GET parameters.
|
|
* @return SimpleHttpRequest New request.
|
|
* @access private
|
|
*/
|
|
function &_createRequest($url, $encoding) {
|
|
$request = &$this->_createHttpRequest($url, $encoding);
|
|
$this->_addAdditionalHeaders($request);
|
|
if ($this->_cookies_enabled) {
|
|
$request->readCookiesFromJar($this->_cookie_jar, $url);
|
|
}
|
|
$this->_authenticator->addHeaders($request, $url);
|
|
return $request;
|
|
}
|
|
|
|
/**
|
|
* Builds the appropriate HTTP request object.
|
|
* @param SimpleUrl $url Target to fetch as url object.
|
|
* @param SimpleFormEncoding $parameters POST/GET parameters.
|
|
* @return SimpleHttpRequest New request object.
|
|
* @access protected
|
|
*/
|
|
function &_createHttpRequest($url, $encoding) {
|
|
$request = &new SimpleHttpRequest($this->_createRoute($url), $encoding);
|
|
return $request;
|
|
}
|
|
|
|
/**
|
|
* Sets up either a direct route or via a proxy.
|
|
* @param SimpleUrl $url Target to fetch as url object.
|
|
* @return SimpleRoute Route to take to fetch URL.
|
|
* @access protected
|
|
*/
|
|
function &_createRoute($url) {
|
|
if ($this->_proxy) {
|
|
$route = &new SimpleProxyRoute(
|
|
$url,
|
|
$this->_proxy,
|
|
$this->_proxy_username,
|
|
$this->_proxy_password);
|
|
} else {
|
|
$route = &new SimpleRoute($url);
|
|
}
|
|
return $route;
|
|
}
|
|
|
|
/**
|
|
* Adds additional manual headers.
|
|
* @param SimpleHttpRequest $request Outgoing request.
|
|
* @access private
|
|
*/
|
|
function _addAdditionalHeaders(&$request) {
|
|
foreach ($this->_additional_headers as $header) {
|
|
$request->addHeaderLine($header);
|
|
}
|
|
}
|
|
}
|
|
?>
|