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Diffstat (limited to 'plugins/OStatus/actions/feedsubsettings.php')
| -rw-r--r-- | plugins/OStatus/actions/feedsubsettings.php | 258 |
1 files changed, 258 insertions, 0 deletions
diff --git a/plugins/OStatus/actions/feedsubsettings.php b/plugins/OStatus/actions/feedsubsettings.php new file mode 100644 index 000000000..4d5b7b60f --- /dev/null +++ b/plugins/OStatus/actions/feedsubsettings.php @@ -0,0 +1,258 @@ +<?php +/* + * StatusNet - the distributed open-source microblogging tool + * Copyright (C) 2009, StatusNet, 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/>. + */ + +/** + * @package FeedSubPlugin + * @maintainer Brion Vibber <brion@status.net> + */ + +if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); } + +class FeedSubSettingsAction extends ConnectSettingsAction +{ + protected $feedurl; + protected $preview; + protected $munger; + + /** + * Title of the page + * + * @return string Title of the page + */ + + function title() + { + return _m('Feed subscriptions'); + } + + /** + * Instructions for use + * + * @return instructions for use + */ + + function getInstructions() + { + return _m('You can subscribe to feeds from other sites; ' . + 'updates will appear in your personal timeline.'); + } + + /** + * Content area of the page + * + * Shows a form for associating a Twitter account with this + * StatusNet account. Also lets the user set preferences. + * + * @return void + */ + + function showContent() + { + $user = common_current_user(); + + $profile = $user->getProfile(); + + $fuser = null; + + $flink = Foreign_link::getByUserID($user->id, FEEDSUB_SERVICE); + + if (!empty($flink)) { + $fuser = $flink->getForeignUser(); + } + + $this->elementStart('form', array('method' => 'post', + 'id' => 'form_settings_feedsub', + 'class' => 'form_settings', + 'action' => + common_local_url('feedsubsettings'))); + + $this->hidden('token', common_session_token()); + + $this->elementStart('fieldset', array('id' => 'settings_feeds')); + + $this->elementStart('ul', 'form_data'); + $this->elementStart('li', array('id' => 'settings_twitter_login_button')); + $this->input('feedurl', _('Feed URL'), $this->feedurl, _('Enter the URL of a PubSubHubbub-enabled feed')); + $this->elementEnd('li'); + $this->elementEnd('ul'); + + if ($this->preview) { + $this->submit('subscribe', _m('Subscribe')); + } else { + $this->submit('validate', _m('Continue')); + } + + $this->elementEnd('fieldset'); + + $this->elementEnd('form'); + + if ($this->preview) { + $this->previewFeed(); + } + } + + /** + * Handle posts to this form + * + * Based on the button that was pressed, muxes out to other functions + * to do the actual task requested. + * + * All sub-functions reload the form with a message -- success or failure. + * + * @return void + */ + + function handlePost() + { + // CSRF protection + $token = $this->trimmed('token'); + if (!$token || $token != common_session_token()) { + $this->showForm(_('There was a problem with your session token. '. + 'Try again, please.')); + return; + } + + if ($this->arg('validate')) { + $this->validateAndPreview(); + } else if ($this->arg('subscribe')) { + $this->saveFeed(); + } else { + $this->showForm(_('Unexpected form submission.')); + } + } + + /** + * Set up and add a feed + * + * @return boolean true if feed successfully read + * Sends you back to input form if not. + */ + function validateFeed() + { + $feedurl = trim($this->arg('feedurl')); + + if ($feedurl == '') { + $this->showForm(_m('Empty feed URL!')); + return; + } + $this->feedurl = $feedurl; + + // Get the canonical feed URI and check it + try { + $discover = new FeedDiscovery(); + $uri = $discover->discoverFromURL($feedurl); + } catch (FeedSubBadURLException $e) { + $this->showForm(_m('Invalid URL or could not reach server.')); + return false; + } catch (FeedSubBadResponseException $e) { + $this->showForm(_m('Cannot read feed; server returned error.')); + return false; + } catch (FeedSubEmptyException $e) { + $this->showForm(_m('Cannot read feed; server returned an empty page.')); + return false; + } catch (FeedSubBadHTMLException $e) { + $this->showForm(_m('Bad HTML, could not find feed link.')); + return false; + } catch (FeedSubNoFeedException $e) { + $this->showForm(_m('Could not find a feed linked from this URL.')); + return false; + } catch (FeedSubUnrecognizedTypeException $e) { + $this->showForm(_m('Not a recognized feed type.')); + return false; + } catch (FeedSubException $e) { + // Any new ones we forgot about + $this->showForm(_m('Bad feed URL.')); + return false; + } + + $this->munger = $discover->feedMunger(); + $this->feedinfo = $this->munger->feedInfo(); + + if ($this->feedinfo->huburi == '' && !common_config('feedsub', 'nohub')) { + $this->showForm(_m('Feed is not PuSH-enabled; cannot subscribe.')); + return false; + } + + return true; + } + + function saveFeed() + { + if ($this->validateFeed()) { + $this->preview = true; + $this->feedinfo = Feedinfo::ensureProfile($this->munger); + + // If not already in use, subscribe to updates via the hub + if ($this->feedinfo->sub_start) { + common_log(LOG_INFO, __METHOD__ . ": double the fun! new sub for {$this->feedinfo->feeduri} last subbed {$this->feedinfo->sub_start}"); + } else { + $ok = $this->feedinfo->subscribe(); + common_log(LOG_INFO, __METHOD__ . ": sub was $ok"); + if (!$ok) { + $this->showForm(_m('Feed subscription failed! Bad response from hub.')); + return; + } + } + + // And subscribe the current user to the local profile + $user = common_current_user(); + $profile = $this->feedinfo->getProfile(); + if (!$profile) { + throw new ServerException("Feed profile was not saved properly."); + } + + if ($user->isSubscribed($profile)) { + $this->showForm(_m('Already subscribed!')); + } elseif ($user->subscribeTo($profile)) { + $this->showForm(_m('Feed subscribed!')); + } else { + $this->showForm(_m('Feed subscription failed!')); + } + } + } + + function validateAndPreview() + { + if ($this->validateFeed()) { + $this->preview = true; + $this->showForm(_m('Previewing feed:')); + } + } + + function previewFeed() + { + $feedinfo = $this->munger->feedinfo(); + $notice = $this->munger->notice(0, true); // preview + + if ($notice) { + $this->element('b', null, 'Preview of latest post from this feed:'); + + $item = new NoticeList($notice, $this); + $item->show(); + } else { + $this->element('b', null, 'No posts in this feed yet.'); + } + } + + function showScripts() + { + parent::showScripts(); + $this->autofocus('feedurl'); + } +} |