gnu-social/actions/newnotice.php

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<?php
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/**
* Laconica, the distributed open-source microblogging tool
*
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* Handler for posting new notices
*
* 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
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* 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
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Personal
* @package Laconica
* @author Evan Prodromou <evan@controlyourself.ca>
* @author Zach Copley <zach@controlyourself.ca>
* @author Sarven Capadisli <csarven@controlyourself.ca>
* @copyright 2008-2009 Control Yourself, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://laconi.ca/
*/
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if (!defined('LACONICA')) {
exit(1);
}
require_once INSTALLDIR.'/lib/noticelist.php';
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/**
* Action for posting new notices
*
* @category Personal
* @package Laconica
* @author Evan Prodromou <evan@controlyourself.ca>
* @author Zach Copley <zach@controlyourself.ca>
* @author Sarven Capadisli <csarven@controlyourself.ca>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://laconi.ca/
*/
class NewnoticeAction extends Action
{
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/**
* Error message, if any
*/
var $msg = null;
/**
* Title of the page
*
* Note that this usually doesn't get called unless something went wrong
*
* @return string page title
*/
function title()
{
return _('New notice');
}
/**
* Handle input, produce output
*
* Switches based on GET or POST method. On GET, shows a form
* for posting a notice. On POST, saves the results of that form.
*
* Results may be a full page, or just a single notice list item,
* depending on whether AJAX was requested.
*
* @param array $args $_REQUEST contents
*
* @return void
*/
function handle($args)
{
parent::handle($args);
if (!common_logged_in()) {
$this->clientError(_('Not logged in.'));
} else if ($_SERVER['REQUEST_METHOD'] == 'POST') {
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// CSRF protection - token set in common_notice_form()
$token = $this->trimmed('token');
if (!$token || $token != common_session_token()) {
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$this->clientError(_('There was a problem with your session token. '.
'Try again, please.'));
return;
}
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$this->saveNewNotice();
} else {
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$this->showForm();
}
}
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/**
* Save a new notice, based on arguments
*
* If successful, will show the notice, or return an Ajax-y result.
* If not, it will show an error message -- possibly Ajax-y.
*
* Also, if the notice input looks like a command, it will run the
* command and show the results -- again, possibly ajaxy.
*
* @return void
*/
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function saveNewNotice()
{
$user = common_current_user();
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assert($user); // XXX: maybe an error instead...
$content = $this->trimmed('status_textarea');
if (!$content) {
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$this->showForm(_('No content!'));
return;
} else {
$content_shortened = common_shorten_links($content);
if (mb_strlen($content_shortened) > 140) {
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$this->showForm(_('That\'s too long. '.
'Max notice size is 140 chars.'));
return;
}
}
$inter = new CommandInterpreter();
$cmd = $inter->handle_command($user, $content_shortened);
if ($cmd) {
if ($this->boolean('ajax')) {
$cmd->execute(new AjaxWebChannel());
} else {
$cmd->execute(new WebChannel());
}
return;
}
$replyto = $this->trimmed('inreplyto');
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$notice = Notice::saveNew($user->id, $content, 'web', 1,
($replyto == 'false') ? null : $replyto);
if (is_string($notice)) {
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$this->showForm($notice);
return;
}
common_broadcast_notice($notice);
if ($this->boolean('ajax')) {
$this->startHTML('text/xml;charset=utf-8');
$this->elementStart('head');
$this->element('title', null, _('Notice posted'));
$this->elementEnd('head');
$this->elementStart('body');
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$this->showNotice($notice);
$this->elementEnd('body');
$this->elementEnd('html');
} else {
$returnto = $this->trimmed('returnto');
if ($returnto) {
$url = common_local_url($returnto,
array('nickname' => $user->nickname));
} else {
$url = common_local_url('shownotice',
array('notice' => $notice->id));
}
common_redirect($url, 303);
}
}
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/**
* Show an Ajax-y error message
*
* Goes back to the browser, where it's shown in a popup.
*
* @param string $msg Message to show
*
* @return void
*/
function ajaxErrorMsg($msg)
{
common_start_html('text/xml;charset=utf-8', true);
$this->elementStart('head');
$this->element('title', null, _('Ajax Error'));
$this->elementEnd('head');
$this->elementStart('body');
$this->element('p', array('id' => 'error'), $msg);
$this->elementEnd('body');
$this->elementEnd('html');
}
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/**
* Formerly page output
*
* This used to be the whole page output; now that's been largely
* subsumed by showPage. So this just stores an error message, if
* it was passed, and calls showPage.
*
* Note that since we started doing Ajax output, this page is rarely
* seen.
*
* @param string $msg An error message, if any
*
* @return void
*/
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function showForm($msg=null)
{
if ($msg && $this->boolean('ajax')) {
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$this->ajaxErrorMsg($msg);
return;
}
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$this->msg = $msg;
$this->showPage();
}
/**
* Overload for replies or bad results
*
* We show content in the notice form if there were replies or results.
*
* @return void
*/
function showNoticeForm()
{
$content = $this->trimmed('status_textarea');
if (!$content) {
$replyto = $this->trimmed('replyto');
$profile = Profile::staticGet('nickname', $replyto);
if ($profile) {
$content = '@' . $profile->nickname . ' ';
}
}
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$notice_form = new NoticeForm($this, $content);
$notice_form->show();
}
/**
* Show an error message
*
* Shows an error message if there is one.
*
* @return void
*
* @todo maybe show some instructions?
*/
function showPageNotice()
{
if ($this->msg) {
$this->element('p', array('id' => 'error'), $this->msg);
}
}
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/**
* Output a notice
*
* Used to generate the notice code for Ajax results.
*
* @param Notice $notice Notice that was saved
*
* @return void
*/
function showNotice($notice)
{
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$nli = new NoticeListItem($notice, $this);
$nli->show();
}
}