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<?php
/*
* Service Provider Example -- Logout
*
* Copyright (C) 2004 Entr'ouvert
* http://lasso.entrouvert.org
*
* Authors: Christophe Nowicki <cnowicki@easter-eggs.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
$config = unserialize(file_get_contents('config.inc'));
require_once 'DB.php';
session_start();
if (!isset($_SESSION["nameidentifier"])) {
print "User is not logged in";
exit(0);
}
lasso_init();
$db = &DB::connect($config['dsn']);
if (DB::isError($db))
die($db->getMessage());
$server_dump = file_get_contents($config['server_dump_filename']);
$server = LassoServer::newfromdump($server_dump);
$logout = new LassoLogout($server, lassoProviderTypeSp);
$query = "SELECT identity_dump FROM users WHERE user_id='";
$query .= $_SESSION['user_id']."'";
$res =& $db->query($query);
if (DB::isError($res))
print $res->getMessage(). "\n";
$row = $res->fetchRow();
$logout->setIdentityFromDump($row[0]);
$logout->setSessionFromDump($_SESSION['session_dump']);
$logout->initRequest();
$logout->buildRequestMsg();
$url = parse_url($logout->msgUrl);
$soap = sprintf(
"POST %s HTTP/1.1\r\nHost: %s:%d\r\nContent-Length: %d\r\nContent-Type: text/xml\r\n\r\n%s\r\n",
$url['path'], $url['host'], $url['port'],
strlen($logout->msgBody), $logout->msgBody);
# PHP 4.3.0 with OpenSSL support required
$fp = fsockopen("ssl://" . $url['host'], $url['port'], $errno, $errstr, 30) or die($errstr ($errno));
socket_set_timeout($fp, 10);
fwrite($fp, $soap);
// header
do $header .= fread($fp, 1); while (!preg_match('/\\r\\n\\r\\n$/',$header));
// chunked encoding
if (preg_match('/Transfer\\-Encoding:\\s+chunked\\r\\n/',$header))
{
do {
$byte = '';
$chunk_size = '';
do {
$chunk_size .= $byte;
$byte = fread($fp, 1);
} while ($byte != "\\r");
fread($fp, 1);
$chunk_size = hexdec($chunk_size);
$response .= fread($fp, $chunk_size);
fread($fp, 2);
} while ($chunk_size);
}
else
{
if (preg_match('/Content\\-Length:\\s+([0-9]+)\\r\\n/', $header, $matches))
$response = fread($fp, $matches[1]);
else
while (!feof($fp)) $response .= fread($fp, 1024);
}
fclose($fp);
if (!preg_match("/^HTTP\/1\\.. 200/i", $header)) {
die("User is already logged out");
}
# Destroy The PHP Session
$_SESSION = array();
session_destroy();
$db->disconnect();
lasso_shutdown();
$url = "index.php";
header("Request-URI: $url");
header("Content-Location: $url");
header("Location: $url\r\n\r\n");
exit;
?>
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