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-rw-r--r--actions/atompubsubscriptionfeed.php335
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diff --git a/actions/atompubsubscriptionfeed.php b/actions/atompubsubscriptionfeed.php
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+<?php
+/**
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2010, StatusNet, Inc.
+ *
+ * AtomPub subscription feed
+ *
+ * PHP version 5
+ *
+ * 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/>.
+ *
+ * @category Cache
+ * @package StatusNet
+ * @author Evan Prodromou <evan@status.net>
+ * @copyright 2010 StatusNet, Inc.
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
+ * @link http://status.net/
+ */
+
+if (!defined('STATUSNET')) {
+ // This check helps protect against security problems;
+ // your code file can't be executed directly from the web.
+ exit(1);
+}
+
+require_once INSTALLDIR . '/lib/apiauth.php';
+
+/**
+ * Subscription feed class for AtomPub
+ *
+ * Generates a list of the user's subscriptions
+ *
+ * @category AtomPub
+ * @package StatusNet
+ * @author Evan Prodromou <evan@status.net>
+ * @copyright 2010 StatusNet, Inc.
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
+ * @link http://status.net/
+ */
+
+class AtompubsubscriptionfeedAction extends ApiAuthAction
+{
+ private $_profile = null;
+ private $_subscriptions = null;
+
+ /**
+ * For initializing members of the class.
+ *
+ * @param array $argarray misc. arguments
+ *
+ * @return boolean true
+ */
+
+ function prepare($argarray)
+ {
+ parent::prepare($argarray);
+
+ $subscriber = $this->trimmed('subscriber');
+
+ $this->_profile = Profile::staticGet('id', $subscriber);
+
+ if (empty($this->_profile)) {
+ throw new ClientException(sprintf(_('No such profile id: %d'),
+ $subscriber), 404);
+ }
+
+ // page and count from ApiAction
+
+ $offset = ($this->page-1) * $this->count;
+
+ $this->_subscriptions = Subscription::bySubscriber($subscriber,
+ $offset,
+ $this->count + 1);
+
+ return true;
+ }
+
+ /**
+ * Handler method
+ *
+ * @param array $argarray is ignored since it's now passed in in prepare()
+ *
+ * @return void
+ */
+
+ function handle($argarray=null)
+ {
+ parent::handle($argarray);
+ switch ($_SERVER['REQUEST_METHOD']) {
+ case 'HEAD':
+ case 'GET':
+ $this->showFeed();
+ break;
+ case 'POST':
+ $this->addSubscription();
+ break;
+ default:
+ $this->clientError(_('HTTP method not supported.'), 405);
+ return;
+ }
+
+ return;
+ }
+
+ /**
+ * Show the feed of subscriptions
+ *
+ * @return void
+ */
+
+ function showFeed()
+ {
+ header('Content-Type: application/atom+xml; charset=utf-8');
+
+ $url = common_local_url('AtomPubSubscriptionFeed',
+ array('subscriber' => $this->_profile->id));
+
+ $feed = new Atom10Feed(true);
+
+ $feed->addNamespace('activity',
+ 'http://activitystrea.ms/spec/1.0/');
+
+ $feed->addNamespace('poco',
+ 'http://portablecontacts.net/spec/1.0');
+
+ $feed->addNamespace('media',
+ 'http://purl.org/syndication/atommedia');
+
+ $feed->id = $url;
+
+ $feed->setUpdated('now');
+
+ $feed->addAuthor($this->_profile->getBestName(),
+ $this->_profile->getURI());
+
+ $feed->setTitle(sprintf(_("%s subscriptions"),
+ $this->_profile->getBestName()));
+
+ $feed->setSubtitle(sprintf(_("People %s has subscribed to on %s"),
+ $this->_profile->getBestName(),
+ common_config('site', 'name')));
+
+ $feed->addLink(common_local_url('subscriptions',
+ array('nickname' =>
+ $this->_profile->nickname)));
+
+ $feed->addLink($url,
+ array('rel' => 'self',
+ 'type' => 'application/atom+xml'));
+
+ // If there's more...
+
+ if ($this->page > 1) {
+ $feed->addLink($url,
+ array('rel' => 'first',
+ 'type' => 'application/atom+xml'));
+
+ $feed->addLink(common_local_url('AtomPubSubscriptionFeed',
+ array('subscriber' =>
+ $this->_profile->id),
+ array('page' =>
+ $this->page - 1)),
+ array('rel' => 'prev',
+ 'type' => 'application/atom+xml'));
+ }
+
+ if ($this->_subscriptions->N > $this->count) {
+
+ $feed->addLink(common_local_url('AtomPubSubscriptionFeed',
+ array('subscriber' =>
+ $this->_profile->id),
+ array('page' =>
+ $this->page + 1)),
+ array('rel' => 'next',
+ 'type' => 'application/atom+xml'));
+ }
+
+ $i = 0;
+
+ // XXX: This is kind of inefficient
+
+ while ($this->_subscriptions->fetch()) {
+
+ // We get one more than needed; skip that one
+
+ $i++;
+
+ if ($i > $this->count) {
+ break;
+ }
+
+ $act = $this->_subscriptions->asActivity();
+ $feed->addEntryRaw($act->asString(false, false, false));
+ }
+
+ $this->raw($feed->getString());
+ }
+
+ /**
+ * Add a new subscription
+ *
+ * Handling the POST method for AtomPub
+ *
+ * @return void
+ */
+
+ function addSubscription()
+ {
+ if (empty($this->auth_user) ||
+ $this->auth_user->id != $this->_profile->id) {
+ throw new ClientException(_("Can't add someone else's".
+ " subscription"), 403);
+ }
+
+ $xml = file_get_contents('php://input');
+
+ $dom = DOMDocument::loadXML($xml);
+
+ if ($dom->documentElement->namespaceURI != Activity::ATOM ||
+ $dom->documentElement->localName != 'entry') {
+ // TRANS: Client error displayed when not using an Atom entry.
+ $this->clientError(_('Atom post must be an Atom entry.'));
+ return;
+ }
+
+ $activity = new Activity($dom->documentElement);
+
+ $sub = null;
+
+ if (Event::handle('StartAtomPubNewActivity', array(&$activity))) {
+
+ if ($activity->verb != ActivityVerb::FOLLOW) {
+ // TRANS: Client error displayed when not using the POST verb.
+ // TRANS: Do not translate POST.
+ $this->clientError(_('Can only handle Follow activities.'));
+ return;
+ }
+
+ $person = $activity->objects[0];
+
+ if ($person->type != ActivityObject::PERSON) {
+ $this->clientError(_('Can only follow people.'));
+ return;
+ }
+
+ // XXX: OStatus discovery (maybe)
+
+ $profile = Profile::fromURI($person->id);
+
+ if (empty($profile)) {
+ $this->clientError(sprintf(_('Unknown profile %s'), $person->id));
+ return;
+ }
+
+ if (Subscription::start($this->_profile, $profile)) {
+ $sub = Subscription::pkeyGet(array('subscriber' => $this->_profile->id,
+ 'subscribed' => $profile->id));
+ }
+
+ Event::handle('EndAtomPubNewActivity', array($activity, $sub));
+ }
+
+ if (!empty($sub)) {
+ $act = $sub->asActivity();
+
+ header('Content-Type: application/atom+xml; charset=utf-8');
+ header('Content-Location: ' . $act->selfLink);
+
+ $this->startXML();
+ $this->raw($act->asString(true, true, true));
+ $this->endXML();
+ }
+ }
+
+ /**
+ * Return true if read only.
+ *
+ * @param array $args other arguments
+ *
+ * @return boolean is read only action?
+ */
+
+ function isReadOnly($args)
+ {
+ return $_SERVER['REQUEST_METHOD'] != 'POST';
+ }
+
+ /**
+ * Return last modified, if applicable.
+ *
+ * @return string last modified http header
+ */
+
+ function lastModified()
+ {
+ return null;
+ }
+
+ /**
+ * Return etag, if applicable.
+ *
+ * @return string etag http header
+ */
+
+ function etag()
+ {
+ return null;
+ }
+
+ /**
+ * Does this require authentication?
+ *
+ * @return boolean true if delete, else false
+ */
+
+ function requiresAuth()
+ {
+ if ($_SERVER['REQUEST_METHOD'] == 'POST') {
+ return true;
+ } else {
+ return false;
+ }
+ }
+}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-07-05 04:20:39 +0000