209 lines
7.3 KiB
PHP
209 lines
7.3 KiB
PHP
<?php
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/*
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* StatusNet - the distributed open-source microblogging tool
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* Copyright (C) 2010, 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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/**
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* @package OStatusPlugin
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* @maintainer James Walker <james@status.net>
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*/
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if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
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class OStatusInitAction extends Action
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{
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var $nickname;
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var $group;
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var $profile;
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var $err;
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function prepare($args)
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{
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parent::prepare($args);
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if (common_logged_in()) {
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$this->clientError(_m('You can use the local subscription!'));
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return false;
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}
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// Local user or group the remote wants to subscribe to
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$this->nickname = $this->trimmed('nickname');
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$this->group = $this->trimmed('group');
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// Webfinger or profile URL of the remote user
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$this->profile = $this->trimmed('profile');
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return true;
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}
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function handle($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 || $token != common_session_token()) {
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$this->showForm(_m('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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$this->ostatusConnect();
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} else {
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$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 = $err;
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if ($this->boolean('ajax')) {
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header('Content-Type: text/xml;charset=utf-8');
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$this->xw->startDocument('1.0', 'UTF-8');
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$this->elementStart('html');
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$this->elementStart('head');
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$this->element('title', null, _m('Subscribe to user'));
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$this->elementEnd('head');
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$this->elementStart('body');
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$this->showContent();
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$this->elementEnd('body');
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$this->elementEnd('html');
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} else {
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$this->showPage();
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}
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}
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function showContent()
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{
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if ($this->group) {
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$header = sprintf(_m('Join group %s'), $this->group);
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$submit = _m('Join');
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} else {
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$header = sprintf(_m('Subscribe to %s'), $this->nickname);
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$submit = _m('Subscribe');
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}
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$this->elementStart('form', array('id' => 'form_ostatus_connect',
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'method' => 'post',
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'class' => 'form_settings',
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'action' => common_local_url('ostatusinit')));
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$this->elementStart('fieldset');
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$this->element('legend', null, $header);
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$this->hidden('token', common_session_token());
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$this->elementStart('ul', 'form_data');
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$this->elementStart('li', array('id' => 'ostatus_nickname'));
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$this->input('nickname', _m('User nickname'), $this->nickname,
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_m('Nickname of the user you want to follow'));
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$this->hidden('group', $this->group); // pass-through for magic links
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$this->elementEnd('li');
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$this->elementStart('li', array('id' => 'ostatus_profile'));
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$this->input('profile', _m('Profile Account'), $this->profile,
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_m("Your account id (i.e. user@identi.ca) — With GNU social, users do not use one server to communicate in the way that Facebook and Twitter users do. Instead, users are spread out over a network of servers and different sites. You can run your own server, or you can sign up for one of the public servers — it doesn't even need to be a GNU social server — any server that speaks the OStatus protocol is suitable. A good place to get an account for yourself is www.status.net"));
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$this->elementEnd('li');
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$this->elementEnd('ul');
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$this->submit('submit', $submit);
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$this->elementEnd('fieldset');
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$this->elementEnd('form');
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}
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function ostatusConnect()
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{
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$opts = array('allowed_schemes' => array('http', 'https', 'acct'));
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if (Validate::uri($this->profile, $opts)) {
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$bits = parse_url($this->profile);
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if ($bits['scheme'] == 'acct') {
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$this->connectWebfinger($bits['path']);
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} else {
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$this->connectProfile($this->profile);
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}
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} elseif (strpos($this->profile, '@') !== false) {
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$this->connectWebfinger($this->profile);
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} else {
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$this->clientError(_m("Must provide a remote profile."));
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}
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}
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function connectWebfinger($acct)
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{
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$target_profile = $this->targetProfile();
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$disco = new Discovery;
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$result = $disco->lookup($acct);
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if (!$result) {
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$this->clientError(_m("Couldn't look up OStatus account profile."));
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}
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foreach ($result->links as $link) {
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if ($link['rel'] == 'http://ostatus.org/schema/1.0/subscribe') {
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// We found a URL - let's redirect!
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$url = Discovery::applyTemplate($link['template'], $target_profile);
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common_log(LOG_INFO, "Sending remote subscriber $acct to $url");
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common_redirect($url, 303);
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}
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}
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$this->clientError(_m("Couldn't confirm remote profile address."));
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}
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function connectProfile($subscriber_profile)
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{
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$target_profile = $this->targetProfile();
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// @fixme hack hack! We should look up the remote sub URL from XRDS
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$suburl = preg_replace('!^(.*)/(.*?)$!', '$1/main/ostatussub', $subscriber_profile);
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$suburl .= '?profile=' . urlencode($target_profile);
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common_log(LOG_INFO, "Sending remote subscriber $subscriber_profile to $suburl");
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common_redirect($suburl, 303);
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}
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/**
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* Build the canonical profile URI+URL of the requested user or group
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*/
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function targetProfile()
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{
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if ($this->nickname) {
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$user = User::staticGet('nickname', $this->nickname);
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if ($user) {
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return common_local_url('userbyid', array('id' => $user->id));
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} else {
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$this->clientError("No such user.");
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}
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} else if ($this->group) {
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$group = Local_group::staticGet('nickname', $this->group);
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if ($group) {
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return common_local_url('groupbyid', array('id' => $group->group_id));
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} else {
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$this->clientError("No such group.");
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}
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} else {
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$this->clientError("No local user or group nickname provided.");
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}
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}
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function title()
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{
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return _m('OStatus Connect');
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}
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}
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