gnu-social/actions/apilist.php

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<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Show, update or delete a list.
*
* PHP version 5
*
* LICENCE: 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 API
* @package StatusNet
* @author Shashi Gowda <connect2shashi@gmail.com>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
if (!defined('STATUSNET')) {
exit(1);
}
class ApiListAction extends ApiBareAuthAction
{
/**
* The list in question in the current request
*/
var $list = null;
/**
* Is this an update request?
*/
var $update = false;
/**
* Is this a delete request?
*/
var $delete = false;
/**
* Set the flags for handling the request. Show list if this is a GET
* request, update it if it is POST, delete list if method is DELETE
* or if method is POST and an argument _method is set to DELETE. Act
* like we don't know if the current user has no access to the list.
*
* Takes parameters:
* - user: the user id or nickname
* - id: the id of the tag or the tag itself
*
* @return boolean success flag
*/
protected function prepare(array $args=array())
{
parent::prepare($args);
$this->delete = ($_SERVER['REQUEST_METHOD'] == 'DELETE' ||
($this->trimmed('_method') == 'DELETE' &&
$_SERVER['REQUEST_METHOD'] == 'POST'));
// update list if method is POST or PUT and $this->delete is not true
$this->update = (!$this->delete &&
in_array($_SERVER['REQUEST_METHOD'], array('POST', 'PUT')));
$this->user = $this->getTargetUser($this->arg('user'));
$this->list = $this->getTargetList($this->arg('user'), $this->arg('id'));
if (empty($this->list)) {
// TRANS: Client error displayed when referring to a non-existing list.
$this->clientError(_('List not found.'), 404);
}
return true;
}
/**
* Handle the request
*
* @return boolean success flag
*/
protected function handle()
{
parent::handle();
if($this->delete) {
$this->handleDelete();
return true;
}
if($this->update) {
$this->handlePut();
return true;
}
switch($this->format) {
case 'xml':
$this->showSingleXmlList($this->list);
break;
case 'json':
$this->showSingleJsonList($this->list);
break;
default:
// TRANS: Client error displayed when coming across a non-supported API method.
$this->clientError(_('API method not found.'), 404);
}
}
/**
* require authentication if it is a write action or user is ambiguous
*
*/
function requiresAuth()
{
return parent::requiresAuth() ||
$this->create || $this->delete;
}
/**
* Update a list
*
* @return boolean success
*/
function handlePut()
{
if($this->auth_user->id != $this->list->tagger) {
// TRANS: Client error displayed when trying to update another user's list.
$this->clientError(_('You cannot update lists that do not belong to you.'), 401);
}
$new_list = clone($this->list);
$new_list->tag = common_canonical_tag($this->arg('name'));
$new_list->description = common_canonical_tag($this->arg('description'));
$new_list->private = ($this->arg('mode') === 'private') ? true : false;
$result = $new_list->update($this->list);
if(!$result) {
// TRANS: Client error displayed when an unknown error occurs updating a list.
$this->clientError(_('An error occured.'), 503);
}
switch($this->format) {
case 'xml':
$this->showSingleXmlList($new_list);
break;
case 'json':
$this->showSingleJsonList($new_list);
break;
default:
// TRANS: Client error displayed when coming across a non-supported API method.
$this->clientError(_('API method not found.'), 404);
}
}
/**
* Delete a list
*
* @return boolean success
*/
function handleDelete()
{
if($this->auth_user->id != $this->list->tagger) {
// TRANS: Client error displayed when trying to delete another user's list.
$this->clientError(_('You cannot delete lists that do not belong to you.'), 401);
}
$record = clone($this->list);
$this->list->delete();
switch($this->format) {
case 'xml':
$this->showSingleXmlList($record);
break;
case 'json':
$this->showSingleJsonList($record);
break;
default:
// TRANS: Client error displayed when coming across a non-supported API method.
$this->clientError(_('API method not found.'), 404);
}
}
/**
* Indicate that this resource is not read-only.
*
* @return boolean is_read-only=false
*/
function isReadOnly($args)
{
return false;
}
/**
* When was the list (people tag) last updated?
*
* @return String time_last_modified
*/
function lastModified()
{
if(!empty($this->list)) {
return strtotime($this->list->modified);
}
return null;
}
/**
* An entity tag for this list
*
* Returns an Etag based on the action name, language, user ID and
* timestamps of the first and last list the user has joined
*
* @return string etag
*/
function etag()
{
if (!empty($this->list)) {
return '"' . implode(
':',
array($this->arg('action'),
common_language(),
$this->user->id,
strtotime($this->list->created),
strtotime($this->list->modified))
)
. '"';
}
return null;
}
}