/**
* This class implements the Singleton pattern. There is only ever
* one instance of the this class and it is accessed only via the
* ClassName::instance() method.
*
* After access by a client, state will be destroyed at shutdown.
*
* @return object
* @access public
* @since 5/26/05
* @static
*/
public static function instance()
{
if (!isset(self::$instance)) {
self::$instance = new PolyphonyLogin();
}
return self::$instance;
}
/**
* Answer the login HTML
*
* @return string
* @access public
* @since 6/5/08
*/
public function getLoginForm()
{
ob_start();
$harmoni = Harmoni::instance();
$authN = Services::getService("AuthN");
$agentM = Services::getService("Agent");
$idM = Services::getService("Id");
$authTypes = $authN->getAuthenticationTypes();
$users = '';
while ($authTypes->hasNext()) {
$authType = $authTypes->next();
$id = $authN->getUserId($authType);
if (!$id->isEqual($idM->getId('edu.middlebury.agents.anonymous'))) {
$agent = $agentM->getAgent($id);
$exists = false;
foreach (explode("+", $users) as $user) {
if ($agent->getDisplayName() == $user) {
$exists = true;
}
}
if (!$exists) {
if ($users == '') {
$users .= $agent->getDisplayName();
} else {
$users .= " + " . $agent->getDisplayName();
}
}
}
}
if ($users != '') {
print "\n<div class='' style='margin-top: 10px;'>";
print "<strong>" . dgettext("polyphony", "Logged in as:") . "</strong> ";
if (count(explode("+", $users)) == 1) {
print $users . "\t";
} else {
print dgettext("polyphony", "Users: ") . $users . "\t";
}
print " | <a href='" . $harmoni->request->quickURL("auth", "logout") . "'>" . dgettext("polyphony", "Log Out") . "</a></div>";
} else {
if (PolyphonyLogin::instance()->hasLoginFailed()) {
$message = "<span class='error'>" . _("Login Failed") . "</span> ";
} else {
$message = "";
}
// set bookmarks for success and failure
$harmoni->history->markReturnURL("polyphony/display_login", $harmoni->request->quickURL($harmoni->config->get('defaultModule'), $harmoni->config->get('defaultAction')));
$harmoni->history->markReturnURL("polyphony/login_fail", $harmoni->request->quickURL("user", "main", array('login_failed' => 'true')));
$harmoni->request->startNamespace("harmoni-authentication");
$usernameField = $harmoni->request->getName("username");
$passwordField = $harmoni->request->getName("password");
$harmoni->request->endNamespace();
$harmoni->request->startNamespace("polyphony");
$visitorAuthType = new Type("Authentication", "edu.middlebury.harmoni", "Visitors");
print "\n<div style='margin-top: 10px;'>" . "\n\t<strong>Visitor Login:</strong>" . "\n<form action='" . $harmoni->request->quickURL("auth", "login_type", array('type' => $visitorAuthType->asString())) . "' style='' method='post'>" . $message . "\n\t" . dgettext("polyphony", "Username (email address):") . " <input class='' type='text' size='8' \n\t\t\t\t\tname='{$usernameField}'/>" . "\n\t" . dgettext("polyphony", "Password:"******" <input class='' type='password' size ='8' \n\t\t\t\t\tname='{$passwordField}'/>" . "\n\t <input class='button' type='submit' value='Log in' />" . "\n</form></div>\n";
$harmoni->request->endNamespace();
}
return ob_get_clean();
}
/**
* Answer the HTML string for the login form.
*
* @return string
* @access public
* @since 2/23/09
*/
public function getLoginFormHtml()
{
if (defined('LOGIN_FORM_CALLBACK')) {
return call_user_func(LOGIN_FORM_CALLBACK);
} else {
$harmoni = Harmoni::instance();
$harmoni->history->markReturnURL("polyphony/login_fail", $harmoni->request->mkURLWithPassthrough());
$harmoni->request->startNamespace("harmoni-authentication");
$usernameField = $harmoni->request->getName("username");
$passwordField = $harmoni->request->getName("password");
$harmoni->request->endNamespace();
$harmoni->request->startNamespace("polyphony");
if (PolyphonyLogin::instance()->hasLoginFailed()) {
$message = "<span class='error'>" . _("Login Failed") . "</span> ";
} else {
$message = "";
}
$html = "\n<form action='" . $harmoni->request->quickURL("auth", "login") . "' method='post'>" . $message . "\n\t" . _("Username/email:") . " <input class='small' type='text' size='8' \n\t\t\t\t\tname='{$usernameField}'/>" . "\n\t" . _("Password:"******" <input class='small' type='password' size ='8' \n\t\t\t\t\tname='{$passwordField}'/>" . "\n\t <input class='button small' type='submit' value='Log in' />" . "\n</form>";
$harmoni->request->endNamespace();
return $html;
}
}
