+<?php
+/*
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2010, 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 OStatusPlugin
+ * @author James Walker <james@status.net>
+ */
+
+if (!defined('GNUSOCIAL')) { exit(1); }
+
+class SalmonAction extends Action
+{
+ var $xml = null;
+ var $activity = null;
+ var $target = null;
+
+ protected function prepare(array $args=array())
+ {
+ StatusNet::setApi(true); // Send smaller error pages
+
+ parent::prepare($args);
+
+ if ($_SERVER['REQUEST_METHOD'] != 'POST') {
+ // TRANS: Client error. POST is a HTTP command. It should not be translated.
+ $this->clientError(_m('This method requires a POST.'));
+ }
+
+ if (empty($_SERVER['CONTENT_TYPE']) || $_SERVER['CONTENT_TYPE'] != 'application/magic-envelope+xml') {
+ // TRANS: Client error. Do not translate "application/magic-envelope+xml".
+ $this->clientError(_m('Salmon requires "application/magic-envelope+xml".'));
+ }
+
+ $xml = file_get_contents('php://input');
+
+ // Check the signature
+ $salmon = new Salmon;
+ if (!$salmon->verifyMagicEnv($xml)) {
+ common_log(LOG_DEBUG, "Salmon signature verification failed.");
+ // TRANS: Client error.
+ $this->clientError(_m('Salmon signature verification failed.'));
+ } else {
+ $magic_env = new MagicEnvelope();
+ $env = $magic_env->parse($xml);
+ $xml = $magic_env->unfold($env);
+ }
+
+ $dom = DOMDocument::loadXML($xml);
+ if ($dom->documentElement->namespaceURI != Activity::ATOM ||
+ $dom->documentElement->localName != 'entry') {
+ common_log(LOG_DEBUG, "Got invalid Salmon post: $xml");
+ // TRANS: Client error.
+ $this->clientError(_m('Salmon post must be an Atom entry.'));
+ }
+
+ $this->activity = new Activity($dom->documentElement);
+ return true;
+ }
+
+ /**
+ * Check the posted activity type and break out to appropriate processing.
+ */
+
+ protected function handle()
+ {
+ parent::handle();
+
+ common_log(LOG_DEBUG, "Got a " . $this->activity->verb);
+ if (Event::handle('StartHandleSalmonTarget', array($this->activity, $this->target)) &&
+ Event::handle('StartHandleSalmon', array($this->activity))) {
+ switch ($this->activity->verb)
+ {
+ case ActivityVerb::POST:
+ $this->handlePost();
+ break;
+ case ActivityVerb::SHARE:
+ $this->handleShare();
+ break;
+ case ActivityVerb::FAVORITE:
+ $this->handleFavorite();
+ break;
+ case ActivityVerb::UNFAVORITE:
+ $this->handleUnfavorite();
+ break;
+ case ActivityVerb::FOLLOW:
+ case ActivityVerb::FRIEND:
+ $this->handleFollow();
+ break;
+ case ActivityVerb::UNFOLLOW:
+ $this->handleUnfollow();
+ break;
+ case ActivityVerb::JOIN:
+ $this->handleJoin();
+ break;
+ case ActivityVerb::LEAVE:
+ $this->handleLeave();
+ break;
+ case ActivityVerb::TAG:
+ $this->handleTag();
+ break;
+ case ActivityVerb::UNTAG:
+ $this->handleUntag();
+ break;
+ case ActivityVerb::UPDATE_PROFILE:
+ $this->handleUpdateProfile();
+ break;
+ default:
+ // TRANS: Client exception.
+ throw new ClientException(_m('Unrecognized activity type.'));
+ }
+ Event::handle('EndHandleSalmon', array($this->activity));
+ Event::handle('EndHandleSalmonTarget', array($this->activity, $this->target));
+ }
+ }
+
+ function handlePost()
+ {
+ // TRANS: Client exception.
+ throw new ClientException(_m('This target does not understand posts.'));
+ }
+
+ function handleFollow()
+ {
+ // TRANS: Client exception.
+ throw new ClientException(_m('This target does not understand follows.'));
+ }
+
+ function handleUnfollow()
+ {
+ // TRANS: Client exception.
+ throw new ClientException(_m('This target does not understand unfollows.'));
+ }
+
+ function handleFavorite()
+ {
+ // TRANS: Client exception.
+ throw new ClientException(_m('This target does not understand favorites.'));
+ }
+
+ function handleUnfavorite()
+ {
+ // TRANS: Client exception.
+ throw new ClientException(_m('This target does not understand unfavorites.'));
+ }
+
+ function handleShare()
+ {
+ // TRANS: Client exception.
+ throw new ClientException(_m('This target does not understand share events.'));
+ }
+
+ function handleJoin()
+ {
+ // TRANS: Client exception.
+ throw new ClientException(_m('This target does not understand joins.'));
+ }
+
+ function handleLeave()
+ {
+ // TRANS: Client exception.
+ throw new ClientException(_m('This target does not understand leave events.'));
+ }
+
+ function handleTag()
+ {
+ // TRANS: Client exception.
+ throw new ClientException(_m('This target does not understand list events.'));
+ }
+
+ function handleUntag()
+ {
+ // TRANS: Client exception.
+ throw new ClientException(_m('This target does not understand unlist events.'));
+ }
+
+ /**
+ * Remote user sent us an update to their profile.
+ * If we already know them, accept the updates.
+ */
+ function handleUpdateProfile()
+ {
+ $oprofile = Ostatus_profile::getActorProfile($this->activity);
+ if ($oprofile instanceof Ostatus_profile) {
+ common_log(LOG_INFO, "Got a profile-update ping from $oprofile->uri");
+ $oprofile->updateFromActivityObject($this->activity->actor);
+ } else {
+ common_log(LOG_INFO, "Ignoring profile-update ping from unknown " . $this->activity->actor->id);
+ }
+ }
+
+ /**
+ * @return Ostatus_profile
+ */
+ function ensureProfile()
+ {
+ $actor = $this->activity->actor;
+ if (empty($actor->id)) {
+ common_log(LOG_ERR, "broken actor: " . var_export($actor, true));
+ common_log(LOG_ERR, "activity with no actor: " . var_export($this->activity, true));
+ // TRANS: Exception.
+ throw new Exception(_m('Received a salmon slap from unidentified actor.'));
+ }
+
+ return Ostatus_profile::ensureActivityObjectProfile($actor);
+ }
+
+ function saveNotice()
+ {
+ $oprofile = $this->ensureProfile();
+ return $oprofile->processPost($this->activity, 'salmon');
+ }
+}