gnu-social/actions/backupaccount.php
2011-02-14 12:41:20 -05:00

255 lines
6.5 KiB
PHP

<?php
/**
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2010, StatusNet, Inc.
*
* Download a backup of your own account to the browser
*
* 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 Account
* @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);
}
/**
* Download a backup of your own account to the browser
*
* We go through some hoops to make this only respond to POST, since
* it's kind of expensive and there's probably some downside to having
* your account in all kinds of search engines.
*
* @category Account
* @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 BackupaccountAction extends Action
{
/**
* Returns the title of the page
*
* @return string page title
*/
function title()
{
// TRANS: Title for backup account page.
return _("Backup account");
}
/**
* For initializing members of the class.
*
* @param array $argarray misc. arguments
*
* @return boolean true
*/
function prepare($argarray)
{
parent::prepare($argarray);
$cur = common_current_user();
if (empty($cur)) {
// TRANS: Client exception thrown when trying to backup an account while not logged in.
throw new ClientException(_('Only logged-in users can backup their account.'), 403);
}
if (!$cur->hasRight(Right::BACKUPACCOUNT)) {
// TRANS: Client exception thrown when trying to backup an account without having backup rights.
throw new ClientException(_('You may not backup your account.'), 403);
}
return true;
}
/**
* Handler method
*
* @param array $argarray is ignored since it's now passed in in prepare()
*
* @return void
*/
function handle($argarray=null)
{
parent::handle($argarray);
if ($this->isPost()) {
$this->sendFeed();
} else {
$this->showPage();
}
return;
}
/**
* Send a feed of the user's activities to the browser
*
* Uses the UserActivityStream class; may take a long time!
*
* @return void
*/
function sendFeed()
{
$cur = common_current_user();
$stream = new UserActivityStream($cur);
header('Content-Disposition: attachment; filename='.$cur->nickname.'.atom');
header('Content-Type: application/atom+xml; charset=utf-8');
$this->raw($stream->getString());
}
/**
* Show a little form so that the person can request a backup.
*
* @return void
*/
function showContent()
{
$form = new BackupAccountForm($this);
$form->show();
}
/**
* Return true if read only.
*
* MAY override
*
* @param array $args other arguments
*
* @return boolean is read only action?
*/
function isReadOnly($args)
{
return true;
}
/**
* Return last modified, if applicable.
*
* MAY override
*
* @return string last modified http header
*/
function lastModified()
{
// For comparison with If-Last-Modified
// If not applicable, return null
return null;
}
/**
* Return etag, if applicable.
*
* MAY override
*
* @return string etag http header
*/
function etag()
{
return null;
}
}
/**
* A form for backing up the account.
*
* @category Account
* @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 BackupAccountForm extends Form
{
/**
* Class of the form.
*
* @return string the form's class
*/
function formClass()
{
return 'form_profile_backup';
}
/**
* URL the form posts to
*
* @return string the form's action URL
*/
function action()
{
return common_local_url('backupaccount');
}
/**
* Output form data
*
* Really, just instructions for doing a backup.
*
* @return void
*/
function formData()
{
$msg =
// TRANS: Information displayed on the backup account page.
_('You can backup your account data in '.
'<a href="http://activitystrea.ms/">Activity Streams</a> '.
'format. This is an experimental feature and provides an '.
'incomplete backup; private account '.
'information like email and IM addresses is not backed up. '.
'Additionally, uploaded files and direct messages are not '.
'backed up.');
$this->out->elementStart('p');
$this->out->raw($msg);
$this->out->elementEnd('p');
}
/**
* Buttons for the form
*
* In this case, a single submit button
*
* @return void
*/
function formActions()
{
$this->out->submit('submit',
// TRANS: Submit button to backup an account on the backup account page.
_m('BUTTON', 'Backup'),
'submit',
null,
// TRANS: Title for submit button to backup an account on the backup account page.
_('Backup your account'));
}
}