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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Single signon for phpMyAdmin using OpenID
*
* This is just example how to use single signon with phpMyAdmin, it is
* not intended to be perfect code and look, only shows how you can
* integrate this functionality in your application.
*
* It uses OpenID pear package, see http://pear.php.net/package/OpenID
*
* User first authenticates using OpenID and based on content of $AUTH_MAP
* the login information is passed to phpMyAdmin in session data.
*
* @package PhpMyAdmin
* @subpackage Example
*/
if (false === @include_once 'OpenID/RelyingParty.php') {
exit;
}
/**
* Map of authenticated users to MySQL user/password pairs.
*/
$AUTH_MAP = array(
'http://launchpad.net/~username' => array(
'user' => 'root',
'password' => '',
),
);
/**
* Simple function to show HTML page with given content.
*
* @param string $contents Content to include in page
*
* @return void
*/
function Show_page($contents)
{
header('Content-Type: text/html; charset=utf-8');
echo '<?xml version="1.0" encoding="utf-8"?>' . "\n";
?>
<!DOCTYPE HTML>
<html lang="en" dir="ltr">
<head>
<link rel="icon" href="../favicon.ico" type="image/x-icon" />
<link rel="shortcut icon" href="../favicon.ico" type="image/x-icon" />
<meta charset="utf-8" />
<title>phpMyAdmin OpenID signon example</title>
</head>
<body>
<?php
if (isset($_SESSION) && isset($_SESSION['PMA_single_signon_error_message'])) {
echo '<p class="error">' . $_SESSION['PMA_single_signon_message'] . '</p>';
unset($_SESSION['PMA_single_signon_message']);
}
echo $contents;
?>
</body>
</html>
<?php
}
/* Need to have cookie visible from parent directory */
session_set_cookie_params(0, '/', '', false);
/* Create signon session */
$session_name = 'SignonSession';
session_name($session_name);
session_start();
// Determine realm and return_to
$base = 'http';
if (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') {
$base .= 's';
}
$base .= '://' . $_SERVER['SERVER_NAME'] . ':' . $_SERVER['SERVER_PORT'];
$realm = $base . '/';
$returnTo = $base . dirname($_SERVER['PHP_SELF']);
if ($returnTo[/*overload*/mb_strlen($returnTo) - 1] != '/') {
$returnTo .= '/';
}
$returnTo .= 'openid.php';
/* Display form */
if (!count($_GET) && !count($_POST) || isset($_GET['phpMyAdmin'])) {
/* Show simple form */
$content = '<form action="openid.php" method="post">
OpenID: <input type="text" name="identifier" /><br />
<input type="submit" name="start" />
</form>
</body>
</html>';
Show_page($content);
exit;
}
/* Grab identifier */
if (isset($_POST['identifier'])) {
$identifier = $_POST['identifier'];
} else if (isset($_SESSION['identifier'])) {
$identifier = $_SESSION['identifier'];
} else {
$identifier = null;
}
/* Create OpenID object */
try {
$o = new OpenID_RelyingParty($returnTo, $realm, $identifier);
} catch (OpenID_Exception $e) {
$contents = "<div class='relyingparty_results'>\n";
$contents .= "<pre>" . $e->getMessage() . "</pre>\n";
$contents .= "</div class='relyingparty_results'>";
Show_page($contents);
exit;
}
/* Redirect to OpenID provider */
if (isset($_POST['start'])) {
try {
$authRequest = $o->prepare();
} catch (OpenID_Exception $e) {
$contents = "<div class='relyingparty_results'>\n";
$contents .= "<pre>" . $e->getMessage() . "</pre>\n";
$contents .= "</div class='relyingparty_results'>";
Show_page($contents);
exit;
}
$url = $authRequest->getAuthorizeURL();
header("Location: $url");
exit;
} else {
/* Grab query string */
if (!count($_POST)) {
list(, $queryString) = explode('?', $_SERVER['REQUEST_URI']);
} else {
// I hate php sometimes
$queryString = file_get_contents('php://input');
}
/* Check reply */
$message = new OpenID_Message($queryString, OpenID_Message::FORMAT_HTTP);
$id = $message->get('openid.claimed_id');
if (!empty($id) && isset($AUTH_MAP[$id])) {
$_SESSION['PMA_single_signon_user'] = $AUTH_MAP[$id]['user'];
$_SESSION['PMA_single_signon_password'] = $AUTH_MAP[$id]['password'];
session_write_close();
/* Redirect to phpMyAdmin (should use absolute URL here!) */
header('Location: ../index.php');
} else {
Show_page('<p>User not allowed!</p>');
exit;
}
}
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