dc09453a77
* renamed FeedSub plugin to OStatus * now setting avatar on subscriptions * general fixes for subscription * integrated PuSH hub to handle only user timelines on canonical ID url; sends updates directly * set $config['feedsub']['nohub'] = true to test w/ foreign feeds that don't have hubs (won't actually receive updates though) * a few bits of code documentation * HMAC support for verified distributions (safest if sub setup is on HTTPS) And a couple core changes: * minimizing HTML output for exceptions in API requests to aid in debugging * fix for rel=self link in apitimelineuser when id given This does not not yet include any of the individual subscription management (Salmon notifications for sub/unsub, etc) nor a nice UI for user subscriptions. Needs some further cleanup to treat posts as status updates instead of link references.
259 lines
7.9 KiB
PHP
259 lines
7.9 KiB
PHP
<?php
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/*
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* StatusNet - the distributed open-source microblogging tool
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* Copyright (C) 2009, 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 FeedSubPlugin
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* @maintainer Brion Vibber <brion@status.net>
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*/
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if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
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class FeedSubSettingsAction extends ConnectSettingsAction
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{
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protected $feedurl;
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protected $preview;
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protected $munger;
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/**
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* Title of the page
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*
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* @return string Title of the page
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*/
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function title()
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{
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return _m('Feed subscriptions');
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}
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/**
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* Instructions for use
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*
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* @return instructions for use
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*/
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function getInstructions()
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{
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return _m('You can subscribe to feeds from other sites; ' .
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'updates will appear in your personal timeline.');
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}
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/**
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* Content area of the page
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*
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* Shows a form for associating a Twitter account with this
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* StatusNet account. Also lets the user set preferences.
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*
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* @return void
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*/
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function showContent()
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{
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$user = common_current_user();
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$profile = $user->getProfile();
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$fuser = null;
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$flink = Foreign_link::getByUserID($user->id, FEEDSUB_SERVICE);
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if (!empty($flink)) {
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$fuser = $flink->getForeignUser();
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}
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$this->elementStart('form', array('method' => 'post',
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'id' => 'form_settings_feedsub',
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'class' => 'form_settings',
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'action' =>
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common_local_url('feedsubsettings')));
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$this->hidden('token', common_session_token());
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$this->elementStart('fieldset', array('id' => 'settings_feeds'));
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$this->elementStart('ul', 'form_data');
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$this->elementStart('li', array('id' => 'settings_twitter_login_button'));
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$this->input('feedurl', _('Feed URL'), $this->feedurl, _('Enter the URL of a PubSubHubbub-enabled feed'));
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$this->elementEnd('li');
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$this->elementEnd('ul');
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if ($this->preview) {
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$this->submit('subscribe', _m('Subscribe'));
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} else {
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$this->submit('validate', _m('Continue'));
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}
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$this->elementEnd('fieldset');
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$this->elementEnd('form');
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if ($this->preview) {
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$this->previewFeed();
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}
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}
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/**
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* Handle posts to this form
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*
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* Based on the button that was pressed, muxes out to other functions
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* to do the actual task requested.
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*
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* All sub-functions reload the form with a message -- success or failure.
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*
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* @return void
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*/
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function handlePost()
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{
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// 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(_('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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if ($this->arg('validate')) {
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$this->validateAndPreview();
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} else if ($this->arg('subscribe')) {
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$this->saveFeed();
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} else {
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$this->showForm(_('Unexpected form submission.'));
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}
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}
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/**
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* Set up and add a feed
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*
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* @return boolean true if feed successfully read
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* Sends you back to input form if not.
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*/
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function validateFeed()
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{
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$feedurl = trim($this->arg('feedurl'));
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if ($feedurl == '') {
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$this->showForm(_m('Empty feed URL!'));
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return;
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}
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$this->feedurl = $feedurl;
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// Get the canonical feed URI and check it
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try {
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$discover = new FeedDiscovery();
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$uri = $discover->discoverFromURL($feedurl);
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} catch (FeedSubBadURLException $e) {
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$this->showForm(_m('Invalid URL or could not reach server.'));
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return false;
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} catch (FeedSubBadResponseException $e) {
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$this->showForm(_m('Cannot read feed; server returned error.'));
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return false;
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} catch (FeedSubEmptyException $e) {
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$this->showForm(_m('Cannot read feed; server returned an empty page.'));
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return false;
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} catch (FeedSubBadHTMLException $e) {
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$this->showForm(_m('Bad HTML, could not find feed link.'));
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return false;
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} catch (FeedSubNoFeedException $e) {
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$this->showForm(_m('Could not find a feed linked from this URL.'));
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return false;
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} catch (FeedSubUnrecognizedTypeException $e) {
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$this->showForm(_m('Not a recognized feed type.'));
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return false;
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} catch (FeedSubException $e) {
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// Any new ones we forgot about
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$this->showForm(_m('Bad feed URL.'));
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return false;
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}
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$this->munger = $discover->feedMunger();
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$this->feedinfo = $this->munger->feedInfo();
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if ($this->feedinfo->huburi == '' && !common_config('feedsub', 'nohub')) {
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$this->showForm(_m('Feed is not PuSH-enabled; cannot subscribe.'));
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return false;
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}
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return true;
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}
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function saveFeed()
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{
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if ($this->validateFeed()) {
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$this->preview = true;
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$this->feedinfo = Feedinfo::ensureProfile($this->munger);
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// If not already in use, subscribe to updates via the hub
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if ($this->feedinfo->sub_start) {
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common_log(LOG_INFO, __METHOD__ . ": double the fun! new sub for {$this->feedinfo->feeduri} last subbed {$this->feedinfo->sub_start}");
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} else {
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$ok = $this->feedinfo->subscribe();
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common_log(LOG_INFO, __METHOD__ . ": sub was $ok");
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if (!$ok) {
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$this->showForm(_m('Feed subscription failed! Bad response from hub.'));
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return;
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}
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}
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// And subscribe the current user to the local profile
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$user = common_current_user();
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$profile = $this->feedinfo->getProfile();
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if (!$profile) {
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throw new ServerException("Feed profile was not saved properly.");
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}
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if ($user->isSubscribed($profile)) {
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$this->showForm(_m('Already subscribed!'));
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} elseif ($user->subscribeTo($profile)) {
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$this->showForm(_m('Feed subscribed!'));
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} else {
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$this->showForm(_m('Feed subscription failed!'));
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}
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}
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}
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function validateAndPreview()
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{
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if ($this->validateFeed()) {
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$this->preview = true;
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$this->showForm(_m('Previewing feed:'));
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}
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}
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function previewFeed()
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{
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$feedinfo = $this->munger->feedinfo();
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$notice = $this->munger->notice(0, true); // preview
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if ($notice) {
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$this->element('b', null, 'Preview of latest post from this feed:');
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$item = new NoticeList($notice, $this);
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$item->show();
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} else {
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$this->element('b', null, 'No posts in this feed yet.');
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}
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}
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function showScripts()
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{
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parent::showScripts();
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$this->autofocus('feedurl');
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}
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}
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