library/auth.inc.php

   1 <?php
   2
   3 /**
   4  * Authorization functions.
   5  *
   6  * @package   OpenEMR
   7  * @link      https://www.open-emr.org
   8  * @author    Rod Roark <rod@sunsetsystems.com>
   9  * @author    Brady Miller <brady.g.miller@gmail.com>
  10  * @author    Kevin Yeh <kevin.y@integralemr.com>
  11  * @author    ViCarePlus <visolve_emr@visolve.com>
  12  * @author    Ken Chapple <ken@mi-squared.com>
  13  * @author    cfapress
  14  * @copyright Copyright (c) 2019 Brady Miller <brady.g.miller@gmail.com>
  15  * @copyright Copyright (c) 2021 Ken Chapple <ken@mi-squared.com>
  16  * @license   https://github.com/openemr/openemr/blob/master/LICENSE GNU General Public License 3
  17  */
  18
  19 use OpenEMR\Common\Auth\AuthUtils;
  20 use OpenEMR\Common\Logging\EventAuditLogger;
  21 use OpenEMR\Common\Session\SessionTracker;
  22 use OpenEMR\Services\UserService;
  23
  24 $incoming_site_id = '';
  25 // This is the conditional that ensures that the submission has the required parameters to attempt a login
  26 if (
  27     isset($_GET['auth'])
  28     && ($_GET['auth'] == "login")
  29     && isset($_POST['new_login_session_management'])
  30     && (
  31         // Either normal login or google sign-in
  32         (isset($_POST['authUser']) && isset($_POST['clearPass']))
  33         || (!empty($GLOBALS['google_signin_enabled']) && !empty($GLOBALS['google_signin_client_id']) && !empty($_POST['used_google_signin']) && !empty($_POST['google_signin_token']))
  34     )
  35 ) {
  36     // Attempt login
  37
  38     // set the language
  39     if (!empty($_POST['languageChoice'])) {
  40         $_SESSION['language_choice'] = $_POST['languageChoice'];
  41     } else {
  42         $_SESSION['language_choice'] = 1;
  43     }
  44
  45     // set language direction according to language choice. Later in globals.php we'll override main theme name if needed.
  46     $_SESSION['language_direction'] = getLanguageDir($_SESSION['language_choice']);
  47
  48     // Note we are purposefully keeping $_POST['clearPass'], which is needed for MFA to work. It is cleared from memory after a
  49     //  unsuccessful or successful login
  50     $passTemp = $_POST['clearPass'];
  51
  52     $login_success = false;
  53     if (
  54         !empty($GLOBALS['google_signin_enabled']) &&
  55         !empty($GLOBALS['google_signin_client_id']) &&
  56         !empty($_POST['used_google_signin']) &&
  57         !empty($_POST['google_signin_token'])
  58     ) {
  59         // google sign-in
  60         $login_success = AuthUtils::verifyGoogleSignIn($_POST['google_signin_token']);
  61     } else {
  62         // normal login
  63         $login_success = (new AuthUtils('login'))->confirmPassword($_POST['authUser'], $passTemp);
  64     }
  65
  66     if ($login_success !== true) {
  67         // login attempt failed
  68         $_SESSION['loginfailure'] = 1;
  69         if (function_exists('sodium_memzero')) {
  70             sodium_memzero($_POST["clearPass"]);
  71         } else {
  72             $_POST["clearPass"] = '';
  73         }
  74         authLoginScreen();
  75     }
  76
  77     // login attempt success
  78     $_SESSION['loginfailure'] = null;
  79     unset($_SESSION['loginfailure']);
  80
  81     // skip the session expiration check below since the entry in session_tracker is not ready yet
  82     $skipSessionExpirationCheck = true;
  83 } elseif ((isset($_GET['auth'])) && ($_GET['auth'] == "logout")) {
  84     // Logout
  85     // If session has timed out / been destroyed, logout record for null user/provider will be invalid.
  86     if (!empty($_SESSION['authUser']) && !empty($_SESSION['authProvider'])) {
  87         if ((isset($_GET['timeout'])) && ($_GET['timeout'] == "1")) {
  88             EventAuditLogger::instance()->newEvent("logout", $_SESSION['authUser'], $_SESSION['authProvider'], 0, "timeout, so force logout");
  89         } else {
  90             EventAuditLogger::instance()->newEvent("logout", $_SESSION['authUser'], $_SESSION['authProvider'], 1, "success");
  91         }
  92     }
  93     authCloseSession();
  94     authLoginScreen(true);
  95 } else {
  96     // Check if session is valid (already logged in user)
  97     if (!AuthUtils::authCheckSession()) {
  98         // Session is not valid (this should only happen if a user's password is changed via another session while the user is logged in)
  99         EventAuditLogger::instance()->newEvent("logout", $_SESSION['authUser'] ?? '', $_SESSION['authProvider'] ?? '', 0, "authCheckSession() check failed, so force logout");
 100         authCloseSession();
 101         authLoginScreen(true);
 102     }
 103 }
 104
 105 // Ensure user has not timed out, if applicable
 106 // Have a mechanism to skip the timeout and timeout reset mechanisms if a skip_timeout_reset parameter exists. This
 107 //  can be used by scripts that continually request information from the server; for example the Messages
 108 //  and Reminders automated intermittent requests.
 109 // Also skipping this all on login since entry in session_tracker is not ready yet
 110 if (empty($skipSessionExpirationCheck) && empty($_REQUEST['skip_timeout_reset'])) {
 111     if (!SessionTracker::isSessionExpired()) {
 112         SessionTracker::updateSessionExpiration();
 113     } else {
 114         // User has timed out.
 115         EventAuditLogger::instance()->newEvent("logout", $_SESSION['authUser'], $_SESSION['authProvider'], 0, "timeout, so force logout");
 116         authCloseSession();
 117         authLoginScreen(true);
 118     }
 119 }
 120
 121 require_once(dirname(__FILE__) . "/../src/Common/Session/SessionUtil.php");
 122 function authCloseSession()
 123 {
 124   // Before destroying the session, save its site_id so that the next
 125   // login will default to that same site.
 126     global $incoming_site_id;
 127     $incoming_site_id = $_SESSION['site_id'];
 128     OpenEMR\Common\Session\SessionUtil::coreSessionDestroy();
 129 }
 130
 131 function authLoginScreen($timed_out = false)
 132 {
 133   // See comment in authCloseSession().
 134     global $incoming_site_id;
 135     ?>
 136 <script>
 137  // Find the top level window for this instance of OpenEMR, set a flag indicating
 138  // session timeout has occurred, and reload the login page into it.  This is so
 139  // that beforeunload event handlers will not obstruct the process in this case.
 140  var w = window;
 141  while (w.opener) { // in case we are in a dialog window
 142   var wtmp = w;
 143   w = w.opener;
 144   wtmp.close();
 145  }
 146     <?php if ($timed_out) { ?>
 147  w.top.timed_out = true;
 148 <?php } ?>
 149  w.top.location.href = '<?php echo "{$GLOBALS['login_screen']}?error=1&site=$incoming_site_id"; ?>';
 150 </script>
 151     <?php
 152     exit;
 153 }
 154
 155 ?>