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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* SignOn Authentication plugin for phpMyAdmin
*
* @package PhpMyAdmin-Authentication
* @subpackage SignOn
*/
namespace PhpMyAdmin\Plugins\Auth;
use PhpMyAdmin\Core;
use PhpMyAdmin\Plugins\AuthenticationPlugin;
use PhpMyAdmin\Util;
/**
* Handles the SignOn authentication method
*
* @package PhpMyAdmin-Authentication
*/
class AuthenticationSignon extends AuthenticationPlugin
{
/**
* Displays authentication form
*
* @return boolean always true (no return indeed)
*/
public function showLoginForm()
{
unset($_SESSION['LAST_SIGNON_URL']);
if (empty($GLOBALS['cfg']['Server']['SignonURL'])) {
Core::fatalError('You must set SignonURL!');
} else {
Core::sendHeaderLocation($GLOBALS['cfg']['Server']['SignonURL']);
}
if (!defined('TESTSUITE')) {
exit();
} else {
return false;
}
}
/**
* Gets authentication credentials
*
* @return boolean whether we get authentication settings or not
*/
public function readCredentials()
{
/* Check if we're using same signon server */
$signon_url = $GLOBALS['cfg']['Server']['SignonURL'];
if (isset($_SESSION['LAST_SIGNON_URL'])
&& $_SESSION['LAST_SIGNON_URL'] != $signon_url
) {
return false;
}
/* Script name */
$script_name = $GLOBALS['cfg']['Server']['SignonScript'];
/* Session name */
$session_name = $GLOBALS['cfg']['Server']['SignonSession'];
/* Session cookie params */
$session_cookie_params = (array) $GLOBALS['cfg']['Server']['SignonCookieParams'];
/* Login URL */
$signon_url = $GLOBALS['cfg']['Server']['SignonURL'];
/* Current host */
$single_signon_host = $GLOBALS['cfg']['Server']['host'];
/* Current port */
$single_signon_port = $GLOBALS['cfg']['Server']['port'];
/* No configuration updates */
$single_signon_cfgupdate = array();
/* Handle script based auth */
if (!empty($script_name)) {
if (!@file_exists($script_name)) {
Core::fatalError(
__('Can not find signon authentication script:')
. ' ' . $script_name
);
}
include $script_name;
list ($this->user, $this->password)
= get_login_credentials($GLOBALS['cfg']['Server']['user']);
} elseif (isset($_COOKIE[$session_name])) { /* Does session exist? */
/* End current session */
$old_session = session_name();
$old_id = session_id();
$old_cookie_params = session_get_cookie_params();
if (!defined('TESTSUITE')) {
session_write_close();
}
/* Sanitize cookie params */
$defaultCookieParams = function($key){
switch ($key) {
case 'lifetime': return 0;
case 'path': return '/';
case 'domain': return '';
case 'secure': return false;
case 'httponly': return false;
}
return null;
};
foreach (array('lifetime', 'path', 'domain', 'secure', 'httponly') as $key) {
if (!isset($session_cookie_params[$key]))
$session_cookie_params[$key] = $defaultCookieParams($key);
}
/* Load single signon session */
if (!defined('TESTSUITE')) {
session_set_cookie_params($session_cookie_params['lifetime'], $session_cookie_params['path'], $session_cookie_params['domain'], $session_cookie_params['secure'], $session_cookie_params['httponly']);
session_name($session_name);
session_id($_COOKIE[$session_name]);
session_start();
}
/* Clear error message */
unset($_SESSION['PMA_single_signon_error_message']);
/* Grab credentials if they exist */
if (isset($_SESSION['PMA_single_signon_user'])) {
$this->user = $_SESSION['PMA_single_signon_user'];
}
if (isset($_SESSION['PMA_single_signon_password'])) {
$this->password = $_SESSION['PMA_single_signon_password'];
}
if (isset($_SESSION['PMA_single_signon_host'])) {
$single_signon_host = $_SESSION['PMA_single_signon_host'];
}
if (isset($_SESSION['PMA_single_signon_port'])) {
$single_signon_port = $_SESSION['PMA_single_signon_port'];
}
if (isset($_SESSION['PMA_single_signon_cfgupdate'])) {
$single_signon_cfgupdate = $_SESSION['PMA_single_signon_cfgupdate'];
}
/* Also get token as it is needed to access subpages */
if (isset($_SESSION['PMA_single_signon_token'])) {
/* No need to care about token on logout */
$pma_token = $_SESSION['PMA_single_signon_token'];
}
/* End single signon session */
if (!defined('TESTSUITE')) {
session_write_close();
}
/* Restart phpMyAdmin session */
if (!defined('TESTSUITE')) {
session_set_cookie_params($old_cookie_params['lifetime'], $old_cookie_params['path'], $old_cookie_params['domain'], $old_cookie_params['secure'], $old_cookie_params['httponly']);
session_name($old_session);
if (!empty($old_id)) {
session_id($old_id);
}
session_start();
}
/* Set the single signon host */
$GLOBALS['cfg']['Server']['host'] = $single_signon_host;
/* Set the single signon port */
$GLOBALS['cfg']['Server']['port'] = $single_signon_port;
/* Configuration update */
$GLOBALS['cfg']['Server'] = array_merge(
$GLOBALS['cfg']['Server'],
$single_signon_cfgupdate
);
/* Restore our token */
if (!empty($pma_token)) {
$_SESSION[' PMA_token '] = $pma_token;
}
/**
* Clear user cache.
*/
Util::clearUserCache();
}
// Returns whether we get authentication settings or not
if (empty($this->user)) {
unset($_SESSION['LAST_SIGNON_URL']);
return false;
}
$_SESSION['LAST_SIGNON_URL'] = $GLOBALS['cfg']['Server']['SignonURL'];
return true;
}
/**
* User is not allowed to login to MySQL -> authentication failed
*
* @param string $failure String describing why authentication has failed
*
* @return void
*/
public function showFailure($failure)
{
parent::showFailure($failure);
/* Session name */
$session_name = $GLOBALS['cfg']['Server']['SignonSession'];
/* Does session exist? */
if (isset($_COOKIE[$session_name])) {
if (!defined('TESTSUITE')) {
/* End current session */
session_write_close();
/* Load single signon session */
session_name($session_name);
session_id($_COOKIE[$session_name]);
session_start();
}
/* Set error message */
$_SESSION['PMA_single_signon_error_message'] = $this->getErrorMessage($failure);
}
$this->showLoginForm();
}
/**
* Returns URL for login form.
*
* @return string
*/
public function getLoginFormURL()
{
return $GLOBALS['cfg']['Server']['SignonURL'];
}
}
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