299 lines
		
	
	
		
			10 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			299 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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if (!defined('STATUSNET')) {
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    exit(1);
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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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class UsersalmonAction extends SalmonAction
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{
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    function prepare($args)
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    {
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        parent::prepare($args);
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        $id = $this->trimmed('id');
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        if (!$id) {
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            // TRANS: Client error displayed trying to perform an action without providing an ID.
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            $this->clientError(_m('No ID.'));
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        }
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        $this->user = User::staticGet('id', $id);
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        if (empty($this->user)) {
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            // TRANS: Client error displayed when referring to a non-existing user.
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            $this->clientError(_m('No such user.'));
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        }
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        $this->target = $this->user;
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        return true;
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    }
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    /**
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     * We've gotten a post event on the Salmon backchannel, probably a reply.
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     *
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     * @todo validate if we need to handle this post, then call into
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     * ostatus_profile's general incoming-post handling.
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     */
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    function handlePost()
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    {
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        common_log(LOG_INFO, "Received post of '{$this->activity->objects[0]->id}' from '{$this->activity->actor->id}'");
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        // @fixme: process all activity objects?
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        switch ($this->activity->objects[0]->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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            // TRANS: Client exception thrown when an undefied activity is performed.
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            throw new ClientException(_m('Cannot 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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        // or c) in reply to a notice to the attention of this user
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        $context = $this->activity->context;
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        if (!empty($context->replyToID)) {
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            $notice = Notice::staticGet('uri', $context->replyToID);
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            if (empty($notice)) {
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                // TRANS: Client exception.
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                throw new ClientException(_m('In reply to unknown notice.'));
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            }
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            if ($notice->profile_id != $this->user->id &&
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                !in_array($this->user->id, $notice->getReplies())) {
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                // TRANS: Client exception.
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                throw new ClientException(_m('In reply to a notice not by this user and not mentioning this user.'));
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            }
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        } else if (!empty($context->attention)) {
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            if (!in_array($this->user->uri, $context->attention) &&
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                !in_array(common_profile_url($this->user->nickname), $context->attention)) {
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                common_log(LOG_ERR, "{$this->user->uri} not in attention list (".implode(',', $context->attention).")");
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                // TRANS: Client exception.
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                throw new ClientException(_m('To the attention of user(s), not including this one.'));
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            }
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        } else {
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            // TRANS: Client exception.
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            throw new ClientException(_m('Not to anyone in reply to anything.'));
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        }
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        $existing = Notice::staticGet('uri', $this->activity->objects[0]->id);
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        if (!empty($existing)) {
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            common_log(LOG_ERR, "Not saving notice '{$existing->uri}'; already exists.");
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            return;
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        }
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        $this->saveNotice();
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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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            Subscription::start($oprofile->localProfile(),
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                                $this->user->getProfile());
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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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        $notice = $this->getNotice($this->activity->objects[0]);
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        $profile = $this->ensureProfile()->localProfile();
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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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            // TRANS: Client exception.
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            throw new ClientException(_m('This is already a favorite.'));
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        }
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        if (!Fave::addNew($profile, $notice)) {
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           // TRANS: Client exception.
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           throw new ClientException(_m('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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        $notice = $this->getNotice($this->activity->objects[0]);
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        $profile = $this->ensureProfile()->localProfile();
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        $fave = Fave::pkeyGet(array('user_id' => $profile->id,
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                                   'notice_id' => $notice->id));
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        if (empty($fave)) {
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            // TRANS: Client exception.
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            throw new ClientException(_m('Notice was not favorited!'));
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        }
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        $fave->delete();
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    }
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    function handleTag()
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    {
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        if ($this->activity->target->type == ActivityObject::_LIST) {
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            if ($this->activity->objects[0]->type != ActivityObject::PERSON) {
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                // TRANS: Client exception.
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                throw new ClientException(_m('Not a person object.'));
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                return false;
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            }
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            // this is a peopletag
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            $tagged = User::staticGet('uri', $this->activity->objects[0]->id);
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            if (empty($tagged)) {
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                // TRANS: Client exception.
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                throw new ClientException(_m('Unidentified profile being listed.'));
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            }
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            if ($tagged->id !== $this->user->id) {
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                // TRANS: Client exception.
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                throw new ClientException(_m('This user is not the one being listed.'));
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            }
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            // save the list
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            $tagger = $this->ensureProfile();
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            $list   = Ostatus_profile::ensureActivityObjectProfile($this->activity->target);
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            $ptag = $list->localPeopletag();
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            $result = Profile_tag::setTag($ptag->tagger, $tagged->id, $ptag->tag);
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            if (!$result) {
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                // TRANS: Client exception.
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                throw new ClientException(_m('The listing could not be saved.'));
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            }
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        }
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    }
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    function handleUntag()
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    {
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        if ($this->activity->target->type == ActivityObject::_LIST) {
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            if ($this->activity->objects[0]->type != ActivityObject::PERSON) {
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                // TRANS: Client exception.
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                throw new ClientException(_m('Not a person object.'));
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                return false;
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            }
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            // this is a peopletag
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            $tagged = User::staticGet('uri', $this->activity->objects[0]->id);
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            if (empty($tagged)) {
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                // TRANS: Client exception.
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                throw new ClientException(_m('Unidentified profile being unlisted.'));
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            }
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            if ($tagged->id !== $this->user->id) {
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                // TRANS: Client exception.
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                throw new ClientException(_m('This user is not the one being unlisted.'));
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            }
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            // save the list
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            $tagger = $this->ensureProfile();
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            $list   = Ostatus_profile::ensureActivityObjectProfile($this->activity->target);
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            $ptag = $list->localPeopletag();
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            $result = Profile_tag::unTag($ptag->tagger, $tagged->id, $ptag->tag);
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            if (!$result) {
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                // TRANS: Client exception.
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                throw new ClientException(_m('The listing could not be deleted.'));
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            }
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        }
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    }
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    /**
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     * @param ActivityObject $object
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     * @return Notice
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     * @throws ClientException on invalid input
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     */
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    function getNotice($object)
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    {
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        if (!$object) {
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            // TRANS: Client exception.
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            throw new ClientException(_m('Cannot favorite/unfavorite without an object.'));
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        }
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        switch ($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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            // TRANS: Client exception.
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            throw new ClientException(_m('Cannot 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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            // TRANS: Client exception. %s is an object ID.
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            throw new ClientException(sprintf(_m('Notice with ID %s unknown.'),$object->id));
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        }
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        if ($notice->profile_id != $this->user->id) {
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            // TRANS: Client exception. %1$s is a notice ID, %2$s is a user ID.
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            throw new ClientException(sprintf(_m('Notice with ID %1$s not posted by %2$s.'),$object->id,$this->user->id));
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        }
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        return $notice;
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    }
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}
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