/**
* Searches the GET and POST parameters in a request for the CSRF token stored
* in the current session and throws an IntrusionException if it is missing.
*
* @param SafeRequest $request A request object.
*
* @throws IntrusionException if the CSRF token is missing or incorrect.
*/
public function verifyCSRFToken($request)
{
if ($request instanceof SafeRequest == false) {
throw new InvalidArgumentException('verifyCSRFToken expects an instance of SafeRequest.');
}
if ($request->getParameter($this->getCSRFToken()) === null) {
throw new IntrusionException('Authentication failed.', 'Possibly forged HTTP request without proper CSRF token detected.');
}
}
}
$ESAPI = new ESAPI(__DIR__ . "/testresources/ESAPI.xml");
ob_start();
session_start();
$view = '';
$tests = null;
if (isset($_SESSION) && isset($_SESSION['tests'])) {
$tests =& $_SESSION['tests'];
} else {
$tests = array('csi' => 'changeSessionIdentifier', 'token' => 'verifyCSRFToken', 'cookie' => 'killAllCookies (incl. killCookie)', 'log' => 'logHTTPRequest', 'logo' => 'logHTTPRequestObfuscate');
$_SESSION['tests'] =& $tests;
}
$util = ESAPI::getHTTPUtilities();
$req = new SafeRequest();
$uri = ESAPI::getEncoder()->encodeForHTML($req->getRequestURI());
if ($req->getParameter('req') == 'test1') {
try {
$util->verifyCSRFToken($req);
$view .= '<p>Your Request contained the CSRF token we have in your session. Good!</p>';
} catch (IntrusionException $e) {
$view .= '<p>Your Request did NOT contain the CSRF token we have in your session. Did you tamper??</p>';
}
$tests['token'] .= ' - DONE';
$oldSessID = session_id();
$sr = $util->changeSessionIdentifier();
if ($sr === true) {
$view .= '<p>Your session was regenerated. ID went from: ';
$view .= ESAPI::getEncoder()->encodeForHTML($oldSessID);
$view .= ' to: ';
$view .= ESAPI::getEncoder()->encodeForHTML(session_id());
$view .= '</p>';
