]> git.mxchange.org Git - friendica.git/blobdiff - include/auth.php
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[friendica.git] / include / auth.php
index 973aabe65489f3ebb8a8a7f028a243dfb32a8c47..a02c18d1dbf0f64aa045e418e9155cd91af3773d 100644 (file)
 <?php
 
-// login/logout 
-
-if((x($_SESSION,'authenticated')) && (! ($_POST['auth-params'] == 'login'))) {
-       if($_POST['auth-params'] == 'logout' || $a->module == "logout") {
-               unset($_SESSION['authenticated']);
-               unset($_SESSION['uid']);
-               unset($_SESSION['visitor_id']);
-               unset($_SESSION['administrator']);
-               unset($_SESSION['cid']);
-               $_SESSION['sysmsg'] = "Logged out." . EOL;
-               goaway($a->get_baseurl());
-       }
-       if(x($_SESSION,'uid')) {
-               $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
-                       intval($_SESSION['uid']));
-               if($r === NULL || (! count($r))) {
-                       goaway($a->get_baseurl());
-               }
-               $a->user = $r[0];
-               if(strlen($a->user['timezone']))
-                       date_default_timezone_set($a->user['timezone']);
-
-               $r = q("SELECT * FROM `contact` WHERE `uid` = %s AND `self` = 1 LIMIT 1",
-                       intval($_SESSION['uid']));
-               if(count($r)) {
-                       $a->cid = $r[0]['id'];
-                       $_SESSION['cid'] = $a->cid;
+use Friendica\App;
+use Friendica\Core\System;
+use Friendica\Core\Config;
+use Friendica\Database\DBM;
+use Friendica\Model\User;
+
+require_once 'include/security.php';
+require_once 'include/datetime.php';
+
+// When the "Friendica" cookie is set, take the value to authenticate and renew the cookie.
+if (isset($_COOKIE["Friendica"])) {
+       $data = json_decode($_COOKIE["Friendica"]);
+       if (isset($data->uid)) {
+
+               $user = dba::select('user',
+                       [],
+                       [
+                               'uid'             => $data->uid,
+                               'blocked'         => false,
+                               'account_expired' => false,
+                               'account_removed' => false,
+                               'verified'        => true,
+                       ],
+                       ['limit' => 1]
+               );
+
+               if (DBM::is_result($user)) {
+                       if ($data->hash != cookie_hash($user)) {
+                               logger("Hash for user " . $data->uid . " doesn't fit.");
+                               nuke_session();
+                               goaway(System::baseUrl());
+                       }
+
+                       // Renew the cookie
+                       // Expires after 7 days by default,
+                       // can be set via system.auth_cookie_lifetime
+                       $authcookiedays = Config::get('system', 'auth_cookie_lifetime', 7);
+                       new_cookie($authcookiedays * 24 * 60 * 60, $user);
+
+                       // Do the authentification if not done by now
+                       if (!isset($_SESSION) || !isset($_SESSION['authenticated'])) {
+                               authenticate_success($user);
+
+                               if (Config::get('system', 'paranoia')) {
+                                       $_SESSION['addr'] = $data->ip;
+                               }
+                       }
                }
        }
 }
-else {
-       unset($_SESSION['authenticated']);
-       unset($_SESSION['uid']);
-       unset($_SESSION['visitor_id']);
-       unset($_SESSION['administrator']);
-       unset($_SESSION['cid']);
-       $encrypted = hash('whirlpool',trim($_POST['password']));
-
-       if((x($_POST,'auth-params')) && $_POST['auth-params'] == 'login') {
-               $r = q("SELECT * FROM `user` 
-                       WHERE `email` = '%s' AND `password` = '%s' LIMIT 1",
-                       dbesc(trim($_POST['login-name'])),
-                       dbesc($encrypted));
-               if(($r === false) || (! count($r))) {
-                       $_SESSION['sysmsg'] = 'Login failed.' . EOL ;
-                       goaway($a->get_baseurl());
-               }
-               $_SESSION['uid'] = $r[0]['uid'];
-               $_SESSION['admin'] = $r[0]['admin'];
-               $_SESSION['authenticated'] = 1;
-               if(x($r[0],'nickname'))
-                       $_SESSION['my_url'] = $a->get_baseurl() . '/profile/' . $r[0]['nickname'];
-               else
-                       $_SESSION['my_url'] = $a->get_baseurl() . '/profile/' . $r[0]['uid'];
-
-               $_SESSION['sysmsg'] = "Welcome back " . $r[0]['username'] . EOL;
-               $a->user = $r[0];
-               if(strlen($a->user['timezone']))
-                       date_default_timezone_set($a->user['timezone']);
-
-               $r = q("SELECT * FROM `contact` WHERE `uid` = %s AND `self` = 1 LIMIT 1",
-                       intval($_SESSION['uid']));
-               if(count($r)) {
-                       $a->cid = $r[0]['id'];
-                       $_SESSION['cid'] = $a->cid;
+
+
+// login/logout
+
+if (isset($_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(System::baseUrl());
+       }
+
+       if (x($_SESSION, 'visitor_id') && !x($_SESSION, 'uid')) {
+               $r = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
+                       intval($_SESSION['visitor_id'])
+               );
+               if (DBM::is_result($r)) {
+                       $a->contact = $r[0];
+               }
+       }
+
+       if (x($_SESSION, 'uid')) {
+               // already logged in user returning
+               $check = Config::get('system', 'paranoia');
+               // extra paranoia - if the IP changed, log them out
+               if ($check && ($_SESSION['addr'] != $_SERVER['REMOTE_ADDR'])) {
+                       logger('Session address changed. Paranoid setting in effect, blocking session. ' .
+                               $_SESSION['addr'] . ' != ' . $_SERVER['REMOTE_ADDR']);
+                       nuke_session();
+                       goaway(System::baseUrl());
                }
 
+               $user = dba::select('user',
+                       [],
+                       [
+                               'uid'             => $_SESSION['uid'],
+                               'blocked'         => false,
+                               'account_expired' => false,
+                               'account_removed' => false,
+                               'verified'        => true,
+                       ],
+                       ['limit' => 1]
+               );
+               if (!DBM::is_result($user)) {
+                       nuke_session();
+                       goaway(System::baseUrl());
+               }
 
+               // 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');
+                       $login_refresh = true;
+               }
+               authenticate_success($user, false, false, $login_refresh);
        }
-}
+} else {
+       session_unset();
+       if (
+               !(x($_POST, 'password') && strlen($_POST['password']))
+               && (
+                       x($_POST, 'openid_url') && strlen($_POST['openid_url'])
+                       || x($_POST, 'username') && strlen($_POST['username'])
+               )
+       ) {
+               $noid = Config::get('system', 'no_openid');
 
-// Returns an array of group names this contact is a member of.
-// Since contact-id's are unique and each "belongs" to a given user uid,
-// this array will only contain group names related to the uid of this
-// DFRN contact. They are *not* neccessarily unique across the entire site. 
-
-
-if(! function_exists('init_groups_visitor')) {
-function init_groups_visitor($contact_id) {
-       $groups = array();
-       $r = q("SELECT `group_member`.`gid`, `group`.`name` 
-               FROM `group_member` LEFT JOIN `group` ON `group_member`.`gid` = `group`.`id` 
-               WHERE `group_member`.`contact-id` = %d ",
-               intval($contact_id)
-       );
-       if(count($r)) {
-               foreach($r as $rr)
-                       $groups[] = $rr['name'];
+               $openid_url = trim(strlen($_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(System::baseUrl());
+                       // NOTREACHED
+               }
+
+               // Otherwise it's probably an openid.
+
+               try {
+                       require_once('library/openid.php');
+                       $openid = new LightOpenID;
+                       $openid->identity = $openid_url;
+                       $_SESSION['openid'] = $openid_url;
+                       $_SESSION['remember'] = $_POST['remember'];
+                       $openid->returnUrl = System::baseUrl(true) . '/openid';
+                       goaway($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
        }
-       return $groups;
-}}
 
+       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 {
+                       $user_id = User::authenticate(trim($_POST['username']), trim($_POST['password']));
+                       if ($user_id) {
+                               $record = dba::select('user', [], ['uid' => $user_id], ['limit' => 1]);
+                       }
+               }
+
+               if (!$record || !count($record)) {
+                       logger('authenticate: failed login attempt: ' . notags(trim($_POST['username'])) . ' from IP ' . $_SERVER['REMOTE_ADDR']);
+                       notice(t('Login failed.') . EOL);
+                       goaway(System::baseUrl());
+               }
+
+               if (!$_POST['remember']) {
+                       new_cookie(0); // 0 means delete on browser exit
+               }
+
+               // if we haven't failed up this point, log them in.
+               $_SESSION['remember'] = $_POST['remember'];
+               $_SESSION['last_login_date'] = datetime_convert('UTC', 'UTC');
+               authenticate_success($record, true, true);
+       }
+}
+
+/**
+ * @brief Kills the "Friendica" cookie and all session data
+ */
+function nuke_session()
+{
+       new_cookie(-3600); // make sure cookie is deleted on browser close, as a security measure
+       session_unset();
+       session_destroy();
+}