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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 https://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;
- }
- /* Change this to true if using phpMyAdmin over https */
- $secure_cookie = false;
- /**
- * Map of authenticated users to MySQL user/password pairs.
- */
- $AUTH_MAP = array(
- 'https://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
- }
- /**
- * Display error and exit
- *
- * @param Exception $e Exception object
- *
- * @return void
- */
- function Die_error($e)
- {
- $contents = "<div class='relyingparty_results'>\n";
- $contents .= "<pre>" . htmlspecialchars($e->getMessage()) . "</pre>\n";
- $contents .= "</div class='relyingparty_results'>";
- Show_page($contents);
- exit;
- }
- /* Need to have cookie visible from parent directory */
- session_set_cookie_params(0, '/', '', $secure_cookie, true);
- /* 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 ($returnTo[strlen($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($_POST['identifier']) && is_string($_POST['identifier'])) {
- $identifier = $_POST['identifier'];
- } elseif (isset($_SESSION['identifier']) && is_string($_SESSION['identifier'])) {
- $identifier = $_SESSION['identifier'];
- } else {
- $identifier = null;
- }
- /* Create OpenID object */
- try {
- $o = new OpenID_RelyingParty($returnTo, $realm, $identifier);
- } catch (Exception $e) {
- Die_error($e);
- }
- /* Redirect to OpenID provider */
- if (isset($_POST['start'])) {
- try {
- $authRequest = $o->prepare();
- } catch (Exception $e) {
- Die_error($e);
- }
- $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 */
- try {
- $message = new OpenID_Message($queryString, OpenID_Message::FORMAT_HTTP);
- } catch (Exception $e) {
- Die_error($e);
- }
- $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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