function login()
{
if ($_POST['openid_action'] == "login") {
$openid = new OpenID();
$openid->SetIdentity($_POST['openid_url']);
$openid->SetTrustRoot('http://' . $_SERVER["HTTP_HOST"]);
$openid->SetRequiredFields(array('nickname', 'email', 'fullname'));
//$openid->SetOptionalFields(array('dob','gender','postcode','country','language','timezone'));
if ($openid->GetOpenIDServer()) {
$openid->SetApprovedURL('http://' . $_SERVER["HTTP_HOST"] . $_SERVER["PATH_INFO"]);
$openid->Redirect();
} else {
$error = $openid->GetError();
$this->message = "ERROR CODE: " . $error['code'] . "<br/>";
$this->message .= "ERROR DESCRIPTION: " . $error['description'] . "<br/>";
}
exit;
} else {
if ($_GET['openid_mode'] == 'id_res') {
$openid = new OpenID();
$openid->SetIdentity($_GET['openid_identity']);
$openid_validation_result = $openid->ValidateWithServer();
if ($openid_validation_result == true) {
$this->user->set('nickname', $_GET['openid_sreg_nickname']);
$this->user->set('identity', $_GET['openid_identity']);
$this->message = "Welcome " . $this->user->get('nickname');
} else {
if ($openid->IsError() == true) {
$error = $openid->GetError();
$this->message = "ERROR CODE: " . $error['code'] . "<br/>";
$this->message .= "ERROR DESCRIPTION: " . $error['description'] . "<br/>";
} else {
$this->message = "INVALID AUTHORIZATION";
}
}
} else {
if ($_GET['openid_mode'] == 'cancel') {
$this->message = "USER CANCELED REQUEST";
}
}
}
}