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<?php
/*
* Laconica - a distributed open-source microblogging tool
* Copyright (C) 2008, Controlez-Vous, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
if (!defined('LACONICA')) { exit(1); }
require_once(INSTALLDIR.'/lib/openid.php');
class OpenidloginAction extends Action {
function handle($args) {
parent::handle($args);
if (common_logged_in()) {
common_user_error(_t('Already logged in.'));
} else if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$this->start_openid_login();
} else {
$this->show_form();
}
}
function show_form($error=NULL) {
common_show_header(_t('OpenID Login'));
if ($error) {
common_element('div', array('class' => 'error'), $error);
} else {
common_element('div', 'instructions',
_t('Login with an OpenID account.'));
}
common_element_start('form', array('method' => 'POST',
'id' => 'openidlogin',
'action' => common_local_url('openidlogin')));
common_input('openid_url', _t('OpenID URL'));
common_submit('submit', _t('Login'));
common_element_end('form');
common_show_footer();
}
function start_openid_login() {
# XXX: form token in $_SESSION to prevent XSS
# XXX: login throttle
$openid_url = $this->trimmed('openid_url');
if (!common_valid_http_url($openid_url)) {
$this->show_form(_t('OpenID must be a valid URL.'));
return;
}
$consumer = oid_consumer();
if (!$consumer) {
common_server_error(_t('Cannot instantiate OpenID consumer object.'));
return;
}
common_ensure_session();
$auth_request = $consumer->begin($openid_url);
// Handle failure status return values.
if (!$auth_request) {
$this->show_form(_t('Not a valid OpenID.'));
return;
} else if (Auth_OpenID::isFailure($auth_request)) {
$this->show_form(_t('OpenID failure: ') . $auth_request->message);
return;
}
$sreg_request = Auth_OpenID_SRegRequest::build(// Required
array(),
// Optional
array('nickname',
'email',
'fullname',
'language',
'timezone',
'postcode',
'country'));
if ($sreg_request) {
$auth_request->addExtension($sreg_request);
}
$trust_root = common_root_url();
$process_url = common_local_url('finishopenidlogin');
if ($auth_request->shouldSendRedirect()) {
$redirect_url = $auth_request->redirectURL($trust_root,
$process_url);
if (!$redirect_url) {
} else if (Auth_OpenID::isFailure($redirect_url)) {
$this->show_form(_t('Could not redirect to server: ') . $redirect_url->message);
return;
} else {
common_redirect($redirect_url);
}
} else {
// Generate form markup and render it.
$form_id = 'openid_message';
$form_html = $auth_request->formMarkup($trust_root, $process_url,
false, array('id' => $form_id));
# XXX: This is cheap, but things choke if we don't escape ampersands
# in the HTML attributes
$form_html = preg_replace('/&/', '&', $form_html);
// Display an error if the form markup couldn't be generated;
// otherwise, render the HTML.
if (Auth_OpenID::isFailure($form_html)) {
$this->show_form(_t('Could not create OpenID form: ') . $form_html->message);
} else {
common_show_header(_t('OpenID Auto-Submit'));
common_element('p', 'instructions',
_t('This form should automatically submit itself. '.
'If not, click the submit button to go to your '.
'OpenID provider.'));
common_raw($form_html);
common_element('script', NULL,
'$(document).ready(function() { ' .
' $("#'. $form_id .'").submit(); '.
'});');
common_show_footer();
}
}
}
}
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