gnu-social/actions/newmessage.php

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<?php
/**
* Laconica, the distributed open-source microblogging tool
*
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* Handler for posting new messages
*
* 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 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/
*/
if (!defined('LACONICA')) {
exit(1);
}
/**
* Action for posting new direct messages
*
* @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 NewmessageAction extends Action
{
/**
* Error message, if any
*/
var $msg = null;
var $content = null;
var $to = null;
var $other = 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 message');
}
/**
* Handle input, produce output
*
* @param array $args $_REQUEST contents
*
* @return void
*/
function handle($args)
{
parent::handle($args);
if (!common_logged_in()) {
$this->clientError(_('Not logged in.'), 403);
} else if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$this->saveNewMessage();
} else {
$this->showForm();
}
}
function prepare($args)
{
parent::prepare($args);
$user = common_current_user();
if (!$user) {
$this->clientError(_('Only logged-in users can send direct messages.'), 403);
return false;
}
$this->content = $this->trimmed('content');
$this->to = $this->trimmed('to');
if ($this->to) {
$this->other = User::staticGet('id', $this->to);
if (!$this->other) {
$this->clientError(_('No such user'), 404);
return false;
}
if (!$user->mutuallySubscribed($this->other)) {
$this->clientError(_('You can\'t send a message to this user.'), 404);
return false;
}
}
return true;
}
function saveNewMessage()
{
// CSRF protection
$token = $this->trimmed('token');
if (!$token || $token != common_session_token()) {
$this->showForm(_('There was a problem with your session token. ' .
'Try again, please.'));
return;
}
$user = common_current_user();
assert($user); // XXX: maybe an error instead...
if (!$this->content) {
$this->showForm(_('No content!'));
return;
} else {
$content_shortened = common_shorten_links($this->content);
if (Message::contentTooLong($content_shortened)) {
$this->showForm(sprintf(_('That\'s too long. ' .
'Max message size is %d chars.'),
Message::maxContent()));
return;
}
}
if (!$this->other) {
$this->showForm(_('No recipient specified.'));
return;
} else if (!$user->mutuallySubscribed($this->other)) {
$this->clientError(_('You can\'t send a message to this user.'), 404);
return;
} else if ($user->id == $this->other->id) {
$this->clientError(_('Don\'t send a message to yourself; ' .
'just say it to yourself quietly instead.'), 403);
return;
}
$message = Message::saveNew($user->id, $this->other->id, $this->content, 'web');
if (is_string($message)) {
$this->showForm($message);
return;
}
$this->notify($user, $this->other, $message);
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if ($this->boolean('ajax')) {
$this->startHTML('text/xml;charset=utf-8');
$this->elementStart('head');
$this->element('title', null, _('Message sent'));
$this->elementEnd('head');
$this->elementStart('body');
$this->element('p', array('id' => 'command_result'),
sprintf(_('Direct message to %s sent'),
$this->other->nickname));
$this->elementEnd('body');
$this->elementEnd('html');
} else {
$url = common_local_url('outbox',
array('nickname' => $user->nickname));
common_redirect($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)
{
$this->startHTML('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');
$this->elementEnd('html');
}
function showForm($msg = null)
{
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if ($msg && $this->boolean('ajax')) {
$this->ajaxErrorMsg($msg);
return;
}
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$this->msg = $msg;
$this->showPage();
}
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function showPageNotice()
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{
if ($this->msg) {
$this->element('p', 'error', $this->msg);
}
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}
function notify($from, $to, $message)
{
mail_notify_message($message, $from, $to);
// XXX: Jabber, SMS notifications... probably queued
}
// Do nothing (override)
function showNoticeForm()
{
$message_form = new MessageForm($this, $this->other, $this->content);
$message_form->show();
}
}