225 lines
8.3 KiB
PHP
225 lines
8.3 KiB
PHP
<?php
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/**
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* Handler for remote subscription
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*
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* PHP version 5
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*
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* @category Action
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @author Robin Millette <millette@status.net>
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* @license http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
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* @link http://status.net/
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*
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* StatusNet - the distributed open-source microblogging tool
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* Copyright (C) 2008-2011 StatusNet, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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**/
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if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
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require_once dirname(__FILE__) . '/../lib/omb.php';
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require_once dirname(__FILE__) . '/../extlib/libomb/service_consumer.php';
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require_once dirname(__FILE__) . '/../extlib/libomb/profile.php';
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/**
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* Handler for remote subscription
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*
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* @category Action
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @author Robin Millette <millette@status.net>
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* @license http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
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* @link http://status.net/
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*/
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class RemotesubscribeAction extends Action
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{
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var $nickname;
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var $profile_url;
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var $err;
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function prepare($args)
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{
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parent::prepare($args);
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if (common_logged_in()) {
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// TRANS: Client error displayed when using remote subscribe for a local entity.
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$this->clientError(_('You can use the local subscription!'));
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return false;
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}
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$this->nickname = $this->trimmed('nickname');
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$this->profile_url = $this->trimmed('profile_url');
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return true;
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}
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function handle($args)
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{
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parent::handle($args);
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if ($_SERVER['REQUEST_METHOD'] == 'POST') {
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/* Use a session token for CSRF protection. */
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$token = $this->trimmed('token');
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if (!$token || $token != common_session_token()) {
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// TRANS: Client error displayed when the session token does not match or is not given.
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$this->showForm(_('There was a problem with your session token. '.
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'Try again, please.'));
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return;
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}
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$this->remoteSubscription();
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} else {
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$this->showForm();
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}
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}
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function showForm($err=null)
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{
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$this->err = $err;
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$this->showPage();
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}
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function showPageNotice()
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{
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if ($this->err) {
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$this->element('div', 'error', $this->err);
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} else {
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// TRANS: Page notice for remote subscribe. This message contains Markdown links.
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// TRANS: Ensure to keep the correct markup of [link description](link).
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$inst = _('To subscribe, you can [login](%%action.login%%),' .
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' or [register](%%action.register%%) a new ' .
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' account. If you already have an account ' .
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' on a [compatible microblogging site](%%doc.openmublog%%), ' .
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' enter your profile URL below.');
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$output = common_markup_to_html($inst);
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$this->elementStart('div', 'instructions');
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$this->raw($output);
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$this->elementEnd('div');
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}
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}
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function title()
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{
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// TRANS: Page title for Remote subscribe.
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return _('Remote subscribe');
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}
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function showContent()
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{
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/* The id 'remotesubscribe' conflicts with the
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button on profile page. */
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$this->elementStart('form', array('id' => 'form_remote_subscribe',
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'method' => 'post',
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'class' => 'form_settings',
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'action' => common_local_url('remotesubscribe')));
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$this->elementStart('fieldset');
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// TRANS: Field legend on page for remote subscribe.
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$this->element('legend', _('Subscribe to a remote user'));
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$this->hidden('token', common_session_token());
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$this->elementStart('ul', 'form_data');
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$this->elementStart('li');
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// TRANS: Field label on page for remote subscribe.
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$this->input('nickname', _('User nickname'), $this->nickname,
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// TRANS: Field title on page for remote subscribe.
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_('Nickname of the user you want to follow.'));
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$this->elementEnd('li');
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$this->elementStart('li');
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// TRANS: Field label on page for remote subscribe.
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$this->input('profile_url', _('Profile URL'), $this->profile_url,
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// TRANS: Field title on page for remote subscribe.
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_('URL of your profile on another compatible microblogging service.'));
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$this->elementEnd('li');
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$this->elementEnd('ul');
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// TRANS: Button text on page for remote subscribe.
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$this->submit('submit', _m('BUTTON','Subscribe'));
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$this->elementEnd('fieldset');
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$this->elementEnd('form');
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}
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function remoteSubscription()
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{
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if (!$this->nickname) {
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// TRANS: Form validation error on page for remote subscribe when no user was provided.
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$this->showForm(_('No such user.'));
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return;
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}
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$user = User::getKV('nickname', $this->nickname);
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$this->profile_url = $this->trimmed('profile_url');
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if (!$this->profile_url) {
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// TRANS: Form validation error on page for remote subscribe when no user profile was found.
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$this->showForm(_('No such user.'));
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return;
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}
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if (!common_valid_http_url($this->profile_url)) {
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// TRANS: Form validation error on page for remote subscribe when an invalid profile URL was provided.
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$this->showForm(_('Invalid profile URL (bad format).'));
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return;
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}
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try {
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$service = new OMB_Service_Consumer($this->profile_url,
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common_root_url(),
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omb_oauth_datastore());
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} catch (OMB_InvalidYadisException $e) {
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// TRANS: Form validation error on page for remote subscribe when no the provided profile URL
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// TRANS: does not contain expected data.
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$this->showForm(_('Not a valid profile URL (no YADIS document or ' .
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'invalid XRDS defined).'));
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return;
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}
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if ($service->getServiceURI(OAUTH_ENDPOINT_REQUEST) ==
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common_local_url('requesttoken') ||
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User::getKV('uri', $service->getRemoteUserURI())) {
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// TRANS: Form validation error on page for remote subscribe.
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$this->showForm(_('That is a local profile! Login to subscribe.'));
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return;
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}
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try {
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$service->requestToken();
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} catch (OMB_RemoteServiceException $e) {
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// TRANS: Form validation error on page for remote subscribe when the remote service is not providing a request token.
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$this->showForm(_('Could not get a request token.'));
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return;
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}
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/* Create an OMB_Profile from $user. */
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$profile = $user->getProfile();
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if (!$profile) {
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common_log_db_error($user, 'SELECT', __FILE__);
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// TRANS: Error message displayed when referring to a user without a profile.
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$this->serverError(_('User has no profile.'));
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return;
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}
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$target_url = $service->requestAuthorization(
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profile_to_omb_profile($user->uri, $profile),
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common_local_url('finishremotesubscribe'));
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common_ensure_session();
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$_SESSION['oauth_authorization_request'] = serialize($service);
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/* Redirect to the remote service for authorization. */
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common_redirect($target_url, 303);
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}
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}
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