160 lines
4.8 KiB
PHP
160 lines
4.8 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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* Show a single membership as an Activity Streams entry
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*
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* PHP version 5
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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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* @category AtomPub
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @copyright 2010 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
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* @link http://status.net/
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*/
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if (!defined('GNUSOCIAL') && !defined('STATUSNET')) { exit(1); }
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/**
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* Show (or delete) a single membership event as an ActivityStreams entry
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*
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* @category AtomPub
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @copyright 2010 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
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* @link http://status.net/
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*/
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class AtompubshowmembershipAction extends AtompubAction
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{
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private $_private = null;
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private $_group = null;
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private $_membership = null;
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protected function atompubPrepare()
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{
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$this->_profile = Profile::getKV('id', $this->trimmed('profile'));
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if (!$this->_profile instanceof Profile) {
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// TRANS: Client exception.
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throw new ClientException(_('No such profile.'), 404);
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}
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$this->_group = User_group::getKV('id', $this->trimmed('group'));
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if (!$this->_group instanceof User_group) {
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// TRANS: Client exception thrown when referencing a non-existing group.
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throw new ClientException(_('No such group.'), 404);
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}
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$kv = array('group_id' => $groupId,
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'profile_id' => $this->_profile->id);
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$this->_membership = Group_member::pkeyGet($kv);
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if (!$this->_membership instanceof Group_member) {
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// TRANS: Client exception thrown when trying to show membership of a non-subscribed group
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throw new ClientException(_('Not a member.'), 404);
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}
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return true;
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}
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protected function handleGet() {
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return $this->showMembership();
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}
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protected function handleDelete() {
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return $this->deleteMembership();
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}
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/**
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* show a single membership
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*
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* @return void
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*/
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function showMembership()
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{
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$activity = $this->_membership->asActivity();
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header('Content-Type: application/atom+xml; charset=utf-8');
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$this->startXML();
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$this->raw($activity->asString(true, true, true));
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$this->endXML();
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return;
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}
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/**
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* Delete the membership (leave the group)
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*
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* @return void
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*/
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function deleteMembership()
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{
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if (empty($this->auth_user) ||
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$this->auth_user->id != $this->_profile->id) {
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// TRANS: Client exception thrown when deleting someone else's membership.
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throw new ClientException(_("Cannot delete someone else's".
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" membership."), 403);
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}
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$this->auth_user->leaveGroup($this->_group);
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return;
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}
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/**
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* Return last modified, if applicable.
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*
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* Because the representation depends on the profile and group,
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* our last modified value is the maximum of their mod time
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* with the actual membership's mod time.
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*
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* @return string last modified http header
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*/
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function lastModified()
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{
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return max(strtotime($this->_profile->modified),
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strtotime($this->_group->modified),
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strtotime($this->_membership->modified));
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}
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/**
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* Return etag, if applicable.
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*
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* A "weak" Etag including the profile and group id as well as
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* the admin flag and ctime of the membership.
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*
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* @return string etag http header
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*/
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function etag()
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{
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$ctime = strtotime($this->_membership->created);
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$adminflag = ($this->_membership->is_admin) ? 't' : 'f';
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return 'W/"' . implode(':', array('AtomPubShowMembership',
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$this->_profile->id,
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$this->_group->id,
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$adminflag,
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$ctime)) . '"';
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}
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}
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