forked from GNUsocial/gnu-social
344 lines
10 KiB
PHP
344 lines
10 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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* @author James Walker <james@status.net>
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*/
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if (!defined('STATUSNET')) {
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exit(1);
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}
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class SalmonAction extends Action
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{
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var $user = null;
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var $xml = null;
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var $activity = null;
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function prepare($args)
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{
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StatusNet::setApi(true); // Send smaller error pages
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parent::prepare($args);
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if ($_SERVER['REQUEST_METHOD'] != 'POST') {
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$this->clientError(_('This method requires a POST.'));
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}
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if ($_SERVER['CONTENT_TYPE'] != 'application/atom+xml') {
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$this->clientError(_('Salmon requires application/atom+xml'));
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}
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$id = $this->trimmed('id');
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if (!$id) {
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$this->clientError(_('No ID.'));
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}
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$this->user = User::staticGet($id);
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if (empty($this->user)) {
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$this->clientError(_('No such user.'));
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}
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$xml = file_get_contents('php://input');
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$dom = DOMDocument::loadXML($xml);
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// XXX: check that document element is Atom entry
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// XXX: check the signature
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// We need to run an entry into Activity, so get the first one
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$entries = $dom->getElementsByTagNameNS(Activity::ATOM, 'entry');
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if ($entries && $entries->length) {
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// @fixme is it legit to have multiple entries?
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$this->act = new Activity($entries->item(0), $dom->documentElement);
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}
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return true;
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}
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/**
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* Check the posted activity type and break out to appropriate processing.
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*/
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function handle($args)
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{
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StatusNet::setApi(true); // Send smaller error pages
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common_log(LOG_INFO, 'Salmon: incoming post for user '. $this->user->id);
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common_log(LOG_DEBUG, "Received salmon bit: " . var_export($this->act, true));
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// TODO : Insert new $xml -> notice code
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if (Event::handle('StartHandleSalmon', array($this->user, $this->activity))) {
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switch ($this->act->verb)
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{
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case ActivityVerb::POST:
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$this->handlePost();
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break;
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case ActivityVerb::SHARE:
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$this->handleShare();
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break;
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case ActivityVerb::FAVORITE:
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$this->handleFavorite();
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break;
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case ActivityVerb::FOLLOW:
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case ActivityVerb::FRIEND:
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$this->handleFollow();
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break;
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case ActivityVerb::UNFOLLOW:
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$this->handleUnfollow();
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break;
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}
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Event::handle('EndHandleSalmon', array($this->user, $this->activity));
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}
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}
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/**
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* We've gotten a post event on the Salmon backchannel, probably a reply.
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*
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* @todo validate if we need to handle this post, then call into
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* ostatus_profile's general incoming-post handling.
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*/
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function handlePost()
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{
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switch ($this->act->object->type) {
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case ActivityObject::ARTICLE:
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case ActivityObject::BLOGENTRY:
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case ActivityObject::NOTE:
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case ActivityObject::STATUS:
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case ActivityObject::COMMENT:
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break;
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default:
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throw new ClientException("Can't handle that kind of post.");
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}
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// Notice must either be a) in reply to a notice by this user
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// or b) to the attention of this user
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$context = $this->act->context;
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if (!empty($context->replyToID)) {
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$notice = Notice::staticGet('uri', $context->replyToID);
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if (empty($notice)) {
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throw new ClientException("In reply to unknown notice");
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}
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if ($notice->profile_id != $this->user->id) {
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throw new ClientException("In reply to a notice not by this user");
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}
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} else if (!empty($context->attention)) {
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if (!in_array($context->attention, $this->user->uri)) {
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throw new ClientException("To the attention of user(s) not including this one!");
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}
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} else {
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throw new ClientException("Not to anyone in reply to anything!");
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}
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$profile = $this->ensureProfile();
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// @fixme do something with the post
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}
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/**
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* We've gotten a follow/subscribe notification from a remote user.
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* Save a subscription relationship for them.
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*/
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function handleFollow()
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{
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$oprofile = $this->ensureProfile();
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if ($oprofile) {
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common_log(LOG_INFO, "Setting up subscription from remote {$oprofile->uri} to local {$this->user->nickname}");
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$oprofile->subscribeRemoteToLocal($this->user);
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} else {
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common_log(LOG_INFO, "Can't set up subscription from remote; missing profile.");
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}
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}
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/**
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* We've gotten an unfollow/unsubscribe notification from a remote user.
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* Check if we have a subscription relationship for them and kill it.
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*
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* @fixme probably catch exceptions on fail?
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*/
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function handleUnfollow()
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{
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$oprofile = $this->ensureProfile();
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if ($oprofile) {
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common_log(LOG_INFO, "Canceling subscription from remote {$oprofile->uri} to local {$this->user->nickname}");
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Subscription::cancel($oprofile->localProfile(), $this->user->getProfile());
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} else {
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common_log(LOG_ERR, "Can't cancel subscription from remote, didn't find the profile");
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}
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}
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/**
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* Remote user likes one of our posts.
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* Confirm the post is ours, and save a local favorite event.
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*/
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function handleFavorite()
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{
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// WORST VARIABLE NAME EVER
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$object = $this->act->object;
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switch ($this->act->object->type) {
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case ActivityObject::ARTICLE:
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case ActivityObject::BLOGENTRY:
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case ActivityObject::NOTE:
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case ActivityObject::STATUS:
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case ActivityObject::COMMENT:
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break;
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default:
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throw new ClientException("Can't handle that kind of object for liking/faving.");
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}
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$notice = Notice::staticGet('uri', $object->id);
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if (empty($notice)) {
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throw new ClientException("Notice with ID $object->id unknown.");
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}
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if ($notice->profile_id != $this->user->id) {
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throw new ClientException("Notice with ID $object->id not posted by $this->user->id.");
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}
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$profile = $this->ensureProfile();
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$old = Fave::pkeyGet(array('user_id' => $profile->id,
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'notice_id' => $notice->id));
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if (!empty($old)) {
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throw new ClientException("We already know that's a fave!");
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}
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$fave = new Fave();
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// @fixme need to change this attribute name, maybe references
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$fave->user_id = $profile->id;
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$fave->notice_id = $notice->id;
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$result = $fave->insert();
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if (!$result) {
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common_log_db_error($fave, 'INSERT', __FILE__);
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throw new ServerException('Could not save new favorite.');
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}
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}
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/**
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* Remote user doesn't like one of our posts after all!
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* Confirm the post is ours, and save a local favorite event.
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*/
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function handleUnfavorite()
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{
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}
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/**
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* Hmmmm
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*/
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function handleShare()
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{
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}
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/**
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* @return Ostatus_profile
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*/
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function ensureProfile()
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{
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$actor = $this->act->actor;
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if (empty($actor->id)) {
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common_log(LOG_ERR, "broken actor: " . var_export($actor, true));
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throw new Exception("Received a salmon slap from unidentified actor.");
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}
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return Ostatus_profile::ensureActorProfile($this->act);
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}
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/**
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* @fixme merge into Ostatus_profile::ensureActorProfile and friends
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*/
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function createProfile()
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{
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$actor = $this->act->actor;
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$profile = new Profile();
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$profile->nickname = $this->nicknameFromURI($actor->id);
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if (empty($profile->nickname)) {
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$profile->nickname = common_nicknamize($actor->title);
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}
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$profile->fullname = $actor->title;
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$profile->bio = $actor->summary; // XXX: is that right?
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$profile->profileurl = $actor->link; // XXX: is that right?
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$profile->created = common_sql_now();
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$id = $profile->insert();
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if (empty($id)) {
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common_log_db_error($profile, 'INSERT', __FILE__);
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throw new Exception("Couldn't save new profile for $actor->id\n");
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}
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// XXX: add avatars
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$op = new Ostatus_profile();
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$op->profile_id = $id;
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$op->homeuri = $actor->id;
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$op->created = $profile->created;
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// XXX: determine feed URI from source or Webfinger or whatever
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$id = $op->insert();
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if (empty($id)) {
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common_log_db_error($op, 'INSERT', __FILE__);
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throw new Exception("Couldn't save new ostatus profile for $actor->id\n");
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}
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return $profile;
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}
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/**
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* @fixme should be merged into Ostatus_profile
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*/
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function nicknameFromURI($uri)
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{
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preg_match('/(\w+):/', $uri, $matches);
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$protocol = $matches[1];
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switch ($protocol) {
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case 'acct':
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case 'mailto':
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if (preg_match("/^$protocol:(.*)?@.*\$/", $uri, $matches)) {
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return common_canonical_nickname($matches[1]);
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}
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return null;
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case 'http':
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return common_url_to_nickname($uri);
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break;
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default:
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return null;
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}
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}
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}
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