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<?php
/**
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2010, StatusNet, Inc.
*
* Show a single membership as an Activity Streams entry
*
* PHP version 5
*
* 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/>.
*
* @category AtomPub
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @copyright 2010 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
* @link http://status.net/
*/
if (!defined('STATUSNET')) {
// This check helps protect against security problems;
// your code file can't be executed directly from the web.
exit(1);
}
require_once INSTALLDIR . '/lib/apiauth.php';
/**
* Show (or delete) a single membership event as an ActivityStreams entry
*
* @category AtomPub
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @copyright 2010 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
* @link http://status.net/
*/
class AtompubshowmembershipAction extends ApiAuthAction
{
private $_profile = null;
private $_group = null;
private $_membership = null;
/**
* For initializing members of the class.
*
* @param array $argarray misc. arguments
*
* @return boolean true
*/
function prepare($argarray)
{
parent::prepare($argarray);
$profileId = $this->trimmed('profile');
$this->_profile = Profile::staticGet('id', $profileId);
if (empty($this->_profile)) {
throw new ClientException(_('No such profile.'), 404);
}
$groupId = $this->trimmed('group');
$this->_group = User_group::staticGet('id', $groupId);
if (empty($this->_group)) {
throw new ClientException(_('No such group'), 404);
}
$kv = array('group_id' => $groupId,
'profile_id' => $profileId);
$this->_membership = Group_member::pkeyGet($kv);
if (empty($this->_membership)) {
throw new ClientException(_('Not a member'), 404);
}
return true;
}
/**
* Handler method
*
* @param array $argarray is ignored since it's now passed in in prepare()
*
* @return void
*/
function handle($argarray=null)
{
switch ($_SERVER['REQUEST_METHOD']) {
case 'GET':
case 'HEAD':
$this->showMembership();
break;
case 'DELETE':
$this->deleteMembership();
break;
default:
throw new ClientException(_('Method not supported'), 405);
break;
}
return;
}
/**
* show a single membership
*
* @return void
*/
function showMembership()
{
$activity = $this->_membership->asActivity();
header('Content-Type: application/atom+xml; charset=utf-8');
$this->startXML();
$this->raw($activity->asString(true, true, true));
$this->endXML();
return;
}
/**
* Delete the membership (leave the group)
*
* @return void
*/
function deleteMembership()
{
if (empty($this->auth_user) ||
$this->auth_user->id != $this->_profile->id) {
throw new ClientException(_("Can't delete someone else's".
" membership"), 403);
}
if (Event::handle('StartLeaveGroup', array($this->_group, $this->auth_user))) {
Group_member::leave($this->_group->id, $this->auth_user->id);
Event::handle('EndLeaveGroup', array($this->_group, $this->auth_user));
}
return;
}
/**
* Return true if read only.
*
* MAY override
*
* @param array $args other arguments
*
* @return boolean is read only action?
*/
function isReadOnly($args)
{
if ($_SERVER['REQUEST_METHOD'] == 'GET' ||
$_SERVER['REQUEST_METHOD'] == 'HEAD') {
return true;
} else {
return false;
}
}
/**
* Return last modified, if applicable.
*
* Because the representation depends on the profile and group,
* our last modified value is the maximum of their mod time
* with the actual membership's mod time.
*
* @return string last modified http header
*/
function lastModified()
{
return max(strtotime($this->_profile->modified),
strtotime($this->_group->modified),
strtotime($this->_membership->modified));
}
/**
* Return etag, if applicable.
*
* A "weak" Etag including the profile and group id as well as
* the admin flag and ctime of the membership.
*
* @return string etag http header
*/
function etag()
{
$ctime = strtotime($this->_membership->created);
$adminflag = ($this->_membership->is_admin) ? 't' : 'f';
return 'W/"' . implode(':', array('AtomPubShowMembership',
$this->_profile->id,
$this->_group->id,
$adminflag,
$ctime)) . '"';
}
/**
* Does this require authentication?
*
* @return boolean true if delete, else false
*/
function requiresAuth()
{
if ($_SERVER['REQUEST_METHOD'] == 'GET' ||
$_SERVER['REQUEST_METHOD'] == 'HEAD') {
return false;
} else {
return true;
}
}
}
|
