<?php require_once('include/security.php'); require_once('include/datetime.php'); function nuke_session() { new_cookie(0); // make sure cookie is deleted on browser close, as a security measure unset($_SESSION['authenticated']); unset($_SESSION['uid']); unset($_SESSION['visitor_id']); unset($_SESSION['administrator']); unset($_SESSION['cid']); unset($_SESSION['theme']); unset($_SESSION['mobile-theme']); unset($_SESSION['page_flags']); unset($_SESSION['submanage']); unset($_SESSION['my_url']); unset($_SESSION['my_address']); unset($_SESSION['addr']); unset($_SESSION['return_url']); } // login/logout if((isset($_SESSION)) && (x($_SESSION,'authenticated')) && ((! (x($_POST,'auth-params'))) || ($_POST['auth-params'] !== 'login'))) { if(((x($_POST,'auth-params')) && ($_POST['auth-params'] === 'logout')) || ($a->module === 'logout')) { // process logout request call_hooks("logging_out"); nuke_session(); info( t('Logged out.') . EOL); goaway(z_root()); } if(x($_SESSION,'visitor_id') && (! x($_SESSION,'uid'))) { $r = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1", intval($_SESSION['visitor_id']) ); if(count($r)) { $a->contact = $r[0]; } } if(x($_SESSION,'uid')) { // already logged in user returning $check = get_config('system','paranoia'); // extra paranoia - if the IP changed, log them out if($check && ($_SESSION['addr'] != $_SERVER['REMOTE_ADDR'])) { logger('Session address changed. Paranoid setting in effect, blocking session. ' . $_SESSION['addr'] . ' != ' . $_SERVER['REMOTE_ADDR']); nuke_session(); goaway(z_root()); } $r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey` FROM `user` WHERE `uid` = %d AND `blocked` = 0 AND `account_expired` = 0 AND `account_removed` = 0 AND `verified` = 1 LIMIT 1", intval($_SESSION['uid']) ); if(! count($r)) { nuke_session(); goaway(z_root()); } // Make sure to refresh the last login time for the user if the user // stays logged in for a long time, e.g. with "Remember Me" $login_refresh = false; if(! x($_SESSION['last_login_date'])) { $_SESSION['last_login_date'] = datetime_convert('UTC','UTC'); } if( strcmp(datetime_convert('UTC','UTC','now - 12 hours'), $_SESSION['last_login_date']) > 0 ) { $_SESSION['last_login_date'] = datetime_convert('UTC','UTC'); $login_refresh = true; } authenticate_success($r[0], false, false, $login_refresh); } } else { if(isset($_SESSION)) { nuke_session(); } if((x($_POST,'password')) && strlen($_POST['password'])) $encrypted = hash('whirlpool',trim($_POST['password'])); else { if((x($_POST,'openid_url')) && strlen($_POST['openid_url']) || (x($_POST,'username')) && strlen($_POST['username'])) { $noid = get_config('system','no_openid'); $openid_url = trim((strlen($_POST['openid_url'])?$_POST['openid_url']:$_POST['username']) ); // validate_url alters the calling parameter $temp_string = $openid_url; // if it's an email address or doesn't resolve to a URL, fail. if(($noid) || (strpos($temp_string,'@')) || (! validate_url($temp_string))) { $a = get_app(); notice( t('Login failed.') . EOL); goaway(z_root()); // NOTREACHED } // Otherwise it's probably an openid. try { require_once('library/openid.php'); $openid = new LightOpenID; $openid->identity = $openid_url; $_SESSION['openid'] = $openid_url; $a = get_app(); $openid->returnUrl = $a->get_baseurl(true) . '/openid'; goaway($openid->authUrl()); } catch (Exception $e) { notice( t('We encountered a problem while logging in with the OpenID you provided. Please check the correct spelling of the ID.').'<br /><br >'. t('The error message was:').' '.$e->getMessage()); } // NOTREACHED } } if((x($_POST,'auth-params')) && $_POST['auth-params'] === 'login') { $record = null; $addon_auth = array( 'username' => trim($_POST['username']), 'password' => trim($_POST['password']), 'authenticated' => 0, 'user_record' => null ); /** * * A plugin indicates successful login by setting 'authenticated' to non-zero value and returning a user record * Plugins should never set 'authenticated' except to indicate success - as hooks may be chained * and later plugins should not interfere with an earlier one that succeeded. * */ call_hooks('authenticate', $addon_auth); if(($addon_auth['authenticated']) && (count($addon_auth['user_record']))) { $record = $addon_auth['user_record']; } else { // process normal login request $r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey` FROM `user` WHERE ( `email` = '%s' OR `nickname` = '%s' ) AND `password` = '%s' AND `blocked` = 0 AND `account_expired` = 0 AND `account_removed` = 0 AND `verified` = 1 LIMIT 1", dbesc(trim($_POST['username'])), dbesc(trim($_POST['username'])), dbesc($encrypted) ); if(count($r)) $record = $r[0]; } if((! $record) || (! count($record))) { logger('authenticate: failed login attempt: ' . notags(trim($_POST['username'])) . ' from IP ' . $_SERVER['REMOTE_ADDR']); notice( t('Login failed.') . EOL ); goaway(z_root()); } // If the user specified to remember the authentication, then change the cookie // to expire after one year (the default is when the browser is closed). // If the user did not specify to remember, change the cookie to expire when the // browser is closed. The reason this is necessary is because if the user // specifies to remember, then logs out and logs back in without specifying to // remember, the old "remember" cookie may remain and prevent the session from // expiring when the browser is closed. // // It seems like I should be able to test for the old cookie, but for some reason when // I read the lifetime value from session_get_cookie_params(), I always get '0' // (i.e. expire when the browser is closed), even when there's a time expiration // on the cookie if($_POST['remember']) { new_cookie(31449600); // one year } else { new_cookie(0); // 0 means delete on browser exit } // if we haven't failed up this point, log them in. $_SESSION['last_login_date'] = datetime_convert('UTC','UTC'); authenticate_success($record, true, true); } } function new_cookie($time) { $old_sid = session_id(); session_set_cookie_params("$time"); session_regenerate_id(false); q("UPDATE session SET sid = '%s' WHERE sid = '%s'", dbesc(session_id()), dbesc($old_sid)); }