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owncloud.php
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owncloud.php
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<?php
/**
* OwnCloud Plugin
*
* @author Aleksander 'A.L.E.C' Machniak <machniak@kolabsys.com>
* @author Thomas Bruederli <bruederli@kolabsys.com>
* @licence GNU AGPL
*
* Configuration (see config.inc.php.dist)
*
*/
class owncloud extends rcube_plugin
{
// all task excluding 'login'
public $task = '?(?!login).*';
// skip frames
public $noframe = true;
function init()
{
// requires kolab_auth plugin
if (empty($_SESSION['kolab_uid'])) {
// temporary:
$_SESSION['kolab_uid'] = $_SESSION['username'];
// return;
}
$rcmail = rcube::get_instance();
$this->add_texts('localization/', false);
// register task
$this->register_task('owncloud');
// register actions
$this->register_action('index', array($this, 'action'));
$this->register_action('embed', array($this, 'embed'));
$this->add_hook('session_destroy', array($this, 'logout'));
// handler for sso requests sent by the owncloud kolab_auth app
if ($rcmail->action == 'owncloudsso' && !empty($_POST['token'])) {
$this->add_hook('startup', array($this, 'sso_request'));
}
// add taskbar button
$this->add_button(array(
'command' => 'owncloud',
'class' => 'button-owncloud',
'classsel' => 'button-owncloud button-selected',
'innerclass' => 'button-inner',
'label' => 'owncloud.owncloud',
), 'taskbar');
// add style for taskbar button (must be here) and Help UI
$this->include_stylesheet($this->local_skin_path()."/owncloud.css");
if ($rcmail->task == 'owncloud' || $rcmail->action == 'compose') {
$this->include_script('owncloud.js');
}
}
function action()
{
$rcmail = rcube::get_instance();
$rcmail->output->add_handlers(array('owncloudframe' => array($this, 'frame')));
$rcmail->output->set_pagetitle($this->gettext('owncloud'));
$rcmail->output->send('owncloud.owncloud');
}
function embed()
{
$rcmail = rcmail::get_instance();
$rcmail->output->command('plugin.owncloudembed', $this->frame());
$rcmail->output->send();
}
function frame()
{
$rcmail = rcube::get_instance();
$this->load_config();
// generate SSO auth token
if (empty($_SESSION['owncloudauth']))
$_SESSION['owncloudauth'] = md5('ocsso' . $_SESSION['user_id'] . microtime() . $rcmail->config->get('des_key'));
$src = $rcmail->config->get('owncloud_url');
$src .= '?kolab_auth=' . strrev(rtrim(base64_encode(http_build_query(array(
'session' => session_id(),
'cname' => session_name(),
'token' => $_SESSION['owncloudauth'],
))), '='));
return html::tag('iframe', array('id' => 'owncloudframe', 'src' => $src,
'width' => "100%", 'height' => "100%", 'frameborder' => 0));
}
function logout()
{
$rcmail = rcube::get_instance();
$this->load_config();
// send logout request to owncloud
$logout_url = $rcmail->config->get('owncloud_url') . '?logout=true';
$rcmail->output->add_script("new Image().src = '$logout_url';", 'foot');
}
function sso_request()
{
$response = array();
$sign_valid = false;
$rcmail = rcube::get_instance();
$this->load_config();
// check signature
if ($hmac = $_POST['hmac']) {
unset($_POST['hmac']);
$postdata = http_build_query($_POST, '', '&');
$sign_valid = ($hmac == hash_hmac('sha256', $postdata, $rcmail->config->get('owncloud_secret', '<undefined-secret>')));
}
// if ownCloud sent a valid auth request, return plain username and password
if ($sign_valid && !empty($_POST['token']) && $_POST['token'] == $_SESSION['owncloudauth']) {
$user = $_SESSION['kolab_uid']; // requires kolab_auth plugin
$pass = $rcmail->decrypt($_SESSION['password']);
$response = array('user' => $user, 'pass' => $pass);
}
echo json_encode($response);
exit;
}
}

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