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<?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/>.
*/
if (!defined('STATUSNET')) {
exit(1);
}
/**
* @package OStatusPlugin
* @author James Walker <james@status.net>
*/
class GroupsalmonAction extends SalmonAction
{
var $group = null;
function prepare($args)
{
parent::prepare($args);
$id = $this->trimmed('id');
if (!$id) {
// TRANS: Client error.
$this->clientError(_m('No ID.'));
}
$this->group = User_group::staticGet('id', $id);
if (empty($this->group)) {
// TRANS: Client error.
$this->clientError(_m('No such group.'));
}
$oprofile = Ostatus_profile::staticGet('group_id', $id);
if ($oprofile) {
// TRANS: Client error.
$this->clientError(_m("Can't accept remote posts for a remote group."));
}
return true;
}
/**
* We've gotten a post event on the Salmon backchannel, probably a reply.
*/
function handlePost()
{
// @fixme process all objects?
switch ($this->activity->objects[0]->type) {
case ActivityObject::ARTICLE:
case ActivityObject::BLOGENTRY:
case ActivityObject::NOTE:
case ActivityObject::STATUS:
case ActivityObject::COMMENT:
break;
default:
// TRANS: Client exception.
throw new ClientException("Can't handle that kind of post.");
}
// Notice must be to the attention of this group
$context = $this->activity->context;
if (empty($context->attention)) {
// TRANS: Client exception.
throw new ClientException("Not to the attention of anyone.");
} else {
$uri = common_local_url('groupbyid', array('id' => $this->group->id));
if (!in_array($uri, $context->attention)) {
// TRANS: Client exception.
throw new ClientException("Not to the attention of this group.");
}
}
$profile = $this->ensureProfile();
$this->saveNotice();
}
/**
* We've gotten a follow/subscribe notification from a remote user.
* Save a subscription relationship for them.
*/
/**
* Postel's law: consider a "follow" notification as a "join".
*/
function handleFollow()
{
$this->handleJoin();
}
/**
* Postel's law: consider an "unfollow" notification as a "leave".
*/
function handleUnfollow()
{
$this->handleLeave();
}
/**
* A remote user joined our group.
* @fixme move permission checks and event call into common code,
* currently we're doing the main logic in joingroup action
* and so have to repeat it here.
*/
function handleJoin()
{
$oprofile = $this->ensureProfile();
if (!$oprofile) {
// TRANS: Client error.
$this->clientError(_m("Can't read profile to set up group membership."));
}
if ($oprofile->isGroup()) {
// TRANS: Client error.
$this->clientError(_m("Groups can't join groups."));
}
common_log(LOG_INFO, "Remote profile {$oprofile->uri} joining local group {$this->group->nickname}");
$profile = $oprofile->localProfile();
if ($profile->isMember($this->group)) {
// Already a member; we'll take it silently to aid in resolving
// inconsistencies on the other side.
return true;
}
if (Group_block::isBlocked($this->group, $profile)) {
$this->clientError(_m('You have been blocked from that group by the admin.'), 403);
return false;
}
try {
// @fixme that event currently passes a user from main UI
// Event should probably move into Group_member::join
// and take a Profile object.
//
//if (Event::handle('StartJoinGroup', array($this->group, $profile))) {
Group_member::join($this->group->id, $profile->id);
//Event::handle('EndJoinGroup', array($this->group, $profile));
//}
} catch (Exception $e) {
// TRANS: Server error. %1$s is a profile URI, %2$s is a group nickname.
$this->serverError(sprintf(_m('Could not join remote user %1$s to group %2$s.'),
$oprofile->uri, $this->group->nickname));
}
}
/**
* A remote user left our group.
*/
function handleLeave()
{
$oprofile = $this->ensureProfile();
if (!$oprofile) {
$this->clientError(_m("Can't read profile to cancel group membership."));
}
if ($oprofile->isGroup()) {
$this->clientError(_m("Groups can't join groups."));
}
common_log(LOG_INFO, "Remote profile {$oprofile->uri} leaving local group {$this->group->nickname}");
$profile = $oprofile->localProfile();
try {
// @fixme event needs to be refactored as above
//if (Event::handle('StartLeaveGroup', array($this->group, $profile))) {
Group_member::leave($this->group->id, $profile->id);
//Event::handle('EndLeaveGroup', array($this->group, $profile));
//}
} catch (Exception $e) {
// TRANS: Server error. %1$s is a profile URI, %2$s is a group nickname.
$this->serverError(sprintf(_m('Could not remove remote user %1$s from group %2$s.'),
$oprofile->uri, $this->group->nickname));
return;
}
}
}
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