]> git.mxchange.org Git - friendica.git/blobdiff - src/Model/User.php
Merge pull request #5617 from MrPetovan/task/use-contact-network
[friendica.git] / src / Model / User.php
index d971d968b093bacdfb34942a880ce89c908be45c..46ffc138404650b30f0119320a85b5d2ad1dad95 100644 (file)
@@ -6,22 +6,19 @@
 namespace Friendica\Model;
 
 use DivineOmega\PasswordExposed\PasswordStatus;
 namespace Friendica\Model;
 
 use DivineOmega\PasswordExposed\PasswordStatus;
+use Exception;
 use Friendica\Core\Addon;
 use Friendica\Core\Config;
 use Friendica\Core\L10n;
 use Friendica\Core\PConfig;
 use Friendica\Core\Addon;
 use Friendica\Core\Config;
 use Friendica\Core\L10n;
 use Friendica\Core\PConfig;
+use Friendica\Core\Protocol;
 use Friendica\Core\System;
 use Friendica\Core\Worker;
 use Friendica\Core\System;
 use Friendica\Core\Worker;
-use Friendica\Database\DBM;
-use Friendica\Model\Contact;
-use Friendica\Model\Group;
-use Friendica\Model\Photo;
+use Friendica\Database\DBA;
 use Friendica\Object\Image;
 use Friendica\Util\Crypto;
 use Friendica\Util\DateTimeFormat;
 use Friendica\Util\Network;
 use Friendica\Object\Image;
 use Friendica\Util\Crypto;
 use Friendica\Util\DateTimeFormat;
 use Friendica\Util\Network;
-use dba;
-use Exception;
 use LightOpenID;
 use function password_exposed;
 
 use LightOpenID;
 use function password_exposed;
 
@@ -41,7 +38,7 @@ class User
         * @return boolean|array
         */
        public static function getOwnerDataById($uid) {
         * @return boolean|array
         */
        public static function getOwnerDataById($uid) {
-               $r = dba::fetch_first("SELECT
+               $r = DBA::fetchFirst("SELECT
                        `contact`.*,
                        `user`.`prvkey` AS `uprvkey`,
                        `user`.`timezone`,
                        `contact`.*,
                        `user`.`prvkey` AS `uprvkey`,
                        `user`.`timezone`,
@@ -59,12 +56,27 @@ class User
                        LIMIT 1",
                        $uid
                );
                        LIMIT 1",
                        $uid
                );
-               if (!DBM::is_result($r)) {
+               if (!DBA::isResult($r)) {
                        return false;
                }
                return $r;
        }
 
                        return false;
                }
                return $r;
        }
 
+       /**
+        * @brief Get owner data by nick name
+        *
+        * @param int $nick
+        * @return boolean|array
+        */
+       public static function getOwnerDataByNick($nick)
+       {
+               $user = DBA::selectFirst('user', ['uid'], ['nickname' => $nick]);
+               if (!DBA::isResult($user)) {
+                       return false;
+               }
+               return self::getOwnerDataById($user['uid']);
+       }
+
        /**
         * @brief Returns the default group for a given user and network
         *
        /**
         * @brief Returns the default group for a given user and network
         *
@@ -77,7 +89,7 @@ class User
        {
                $default_group = 0;
 
        {
                $default_group = 0;
 
-               if ($network == NETWORK_OSTATUS) {
+               if ($network == Protocol::OSTATUS) {
                        $default_group = PConfig::get($uid, "ostatus", "default_group");
                }
 
                        $default_group = PConfig::get($uid, "ostatus", "default_group");
                }
 
@@ -85,9 +97,9 @@ class User
                        return $default_group;
                }
 
                        return $default_group;
                }
 
-               $user = dba::selectFirst('user', ['def_gid'], ['uid' => $uid]);
+               $user = DBA::selectFirst('user', ['def_gid'], ['uid' => $uid]);
 
 
-               if (DBM::is_result($user)) {
+               if (DBA::isResult($user)) {
                        $default_group = $user["def_gid"];
                }
 
                        $default_group = $user["def_gid"];
                }
 
@@ -127,13 +139,23 @@ class User
        {
                $user = self::getAuthenticationInfo($user_info);
 
        {
                $user = self::getAuthenticationInfo($user_info);
 
-               if ($user['legacy_password']) {
+               if (strpos($user['password'], '$') === false) {
+                       //Legacy hash that has not been replaced by a new hash yet
+                       if (self::hashPasswordLegacy($password) === $user['password']) {
+                               self::updatePassword($user['uid'], $password);
+
+                               return $user['uid'];
+                       }
+               } elseif (!empty($user['legacy_password'])) {
+                       //Legacy hash that has been double-hashed and not replaced by a new hash yet
+                       //Warning: `legacy_password` is not necessary in sync with the content of `password`
                        if (password_verify(self::hashPasswordLegacy($password), $user['password'])) {
                                self::updatePassword($user['uid'], $password);
 
                                return $user['uid'];
                        }
                } elseif (password_verify($password, $user['password'])) {
                        if (password_verify(self::hashPasswordLegacy($password), $user['password'])) {
                                self::updatePassword($user['uid'], $password);
 
                                return $user['uid'];
                        }
                } elseif (password_verify($password, $user['password'])) {
+                       //New password hash
                        if (password_needs_rehash($user['password'], PASSWORD_DEFAULT)) {
                                self::updatePassword($user['uid'], $password);
                        }
                        if (password_needs_rehash($user['password'], PASSWORD_DEFAULT)) {
                                self::updatePassword($user['uid'], $password);
                        }
@@ -176,7 +198,7 @@ class User
                        }
                } elseif (is_int($user_info) || is_string($user_info)) {
                        if (is_int($user_info)) {
                        }
                } elseif (is_int($user_info) || is_string($user_info)) {
                        if (is_int($user_info)) {
-                               $user = dba::selectFirst('user', ['uid', 'password', 'legacy_password'],
+                               $user = DBA::selectFirst('user', ['uid', 'password', 'legacy_password'],
                                        [
                                                'uid' => $user_info,
                                                'blocked' => 0,
                                        [
                                                'uid' => $user_info,
                                                'blocked' => 0,
@@ -186,21 +208,14 @@ class User
                                        ]
                                );
                        } else {
                                        ]
                                );
                        } else {
-                               $user = dba::fetch_first('SELECT `uid`, `password`, `legacy_password`
-                                       FROM `user`
-                                       WHERE (`email` = ? OR `username` = ? OR `nickname` = ?)
-                                       AND `blocked` = 0
-                                       AND `account_expired` = 0
-                                       AND `account_removed` = 0
-                                       AND `verified` = 1
-                                       LIMIT 1',
-                                       $user_info,
-                                       $user_info,
-                                       $user_info
-                               );
+                               $fields = ['uid', 'password', 'legacy_password'];
+                               $condition = ["(`email` = ? OR `username` = ? OR `nickname` = ?)
+                                       AND NOT `blocked` AND NOT `account_expired` AND NOT `account_removed` AND `verified`",
+                                       $user_info, $user_info, $user_info];
+                               $user = DBA::selectFirst('user', $fields, $condition);
                        }
 
                        }
 
-                       if (!DBM::is_result($user)) {
+                       if (!DBA::isResult($user)) {
                                throw new Exception(L10n::t('User not found'));
                        }
                }
                                throw new Exception(L10n::t('User not found'));
                        }
                }
@@ -248,6 +263,10 @@ class User
         */
        public static function hashPassword($password)
        {
         */
        public static function hashPassword($password)
        {
+               if (!trim($password)) {
+                       throw new Exception(L10n::t('Password can\'t be empty'));
+               }
+
                return password_hash($password, PASSWORD_DEFAULT);
        }
 
                return password_hash($password, PASSWORD_DEFAULT);
        }
 
@@ -279,7 +298,37 @@ class User
                        'pwdreset_time' => null,
                        'legacy_password' => false
                ];
                        'pwdreset_time' => null,
                        'legacy_password' => false
                ];
-               return dba::update('user', $fields, ['uid' => $uid]);
+               return DBA::update('user', $fields, ['uid' => $uid]);
+       }
+
+       /**
+        * @brief Checks if a nickname is in the list of the forbidden nicknames
+        *
+        * Check if a nickname is forbidden from registration on the node by the
+        * admin. Forbidden nicknames (e.g. role namess) can be configured in the
+        * admin panel.
+        *
+        * @param string $nickname The nickname that should be checked
+        * @return boolean True is the nickname is blocked on the node
+        */
+       public static function isNicknameBlocked($nickname)
+       {
+               $forbidden_nicknames = Config::get('system', 'forbidden_nicknames', '');
+
+               // if the config variable is empty return false
+               if (empty($forbidden_nicknames)) {
+                       return false;
+               }
+
+               // check if the nickname is in the list of blocked nicknames
+               $forbidden = explode(',', $forbidden_nicknames);
+               $forbidden = array_map('trim', $forbidden);
+               if (in_array(strtolower($nickname), $forbidden)) {
+                       return true;
+               }
+
+               // else return false
+               return false;
        }
 
        /**
        }
 
        /**
@@ -306,19 +355,20 @@ class User
                $using_invites = Config::get('system', 'invitation_only');
                $num_invites   = Config::get('system', 'number_invites');
 
                $using_invites = Config::get('system', 'invitation_only');
                $num_invites   = Config::get('system', 'number_invites');
 
-               $invite_id  = x($data, 'invite_id')  ? notags(trim($data['invite_id']))  : '';
-               $username   = x($data, 'username')   ? notags(trim($data['username']))   : '';
-               $nickname   = x($data, 'nickname')   ? notags(trim($data['nickname']))   : '';
-               $email      = x($data, 'email')      ? notags(trim($data['email']))      : '';
-               $openid_url = x($data, 'openid_url') ? notags(trim($data['openid_url'])) : '';
-               $photo      = x($data, 'photo')      ? notags(trim($data['photo']))      : '';
-               $password   = x($data, 'password')   ? trim($data['password'])           : '';
-               $password1  = x($data, 'password1')  ? trim($data['password1'])          : '';
-               $confirm    = x($data, 'confirm')    ? trim($data['confirm'])            : '';
-               $blocked    = x($data, 'blocked')    ? intval($data['blocked'])          : 0;
-               $verified   = x($data, 'verified')   ? intval($data['verified'])         : 0;
-
-               $publish = x($data, 'profile_publish_reg') && intval($data['profile_publish_reg']) ? 1 : 0;
+               $invite_id  = !empty($data['invite_id'])  ? notags(trim($data['invite_id']))  : '';
+               $username   = !empty($data['username'])   ? notags(trim($data['username']))   : '';
+               $nickname   = !empty($data['nickname'])   ? notags(trim($data['nickname']))   : '';
+               $email      = !empty($data['email'])      ? notags(trim($data['email']))      : '';
+               $openid_url = !empty($data['openid_url']) ? notags(trim($data['openid_url'])) : '';
+               $photo      = !empty($data['photo'])      ? notags(trim($data['photo']))      : '';
+               $password   = !empty($data['password'])   ? trim($data['password'])           : '';
+               $password1  = !empty($data['password1'])  ? trim($data['password1'])          : '';
+               $confirm    = !empty($data['confirm'])    ? trim($data['confirm'])            : '';
+               $blocked    = !empty($data['blocked'])    ? intval($data['blocked'])          : 0;
+               $verified   = !empty($data['verified'])   ? intval($data['verified'])         : 0;
+               $language   = !empty($data['language'])   ? notags(trim($data['language']))   : 'en';
+
+               $publish = !empty($data['profile_publish_reg']) && intval($data['profile_publish_reg']) ? 1 : 0;
                $netpublish = strlen(Config::get('system', 'directory')) ? $publish : 0;
 
                if ($password1 != $confirm) {
                $netpublish = strlen(Config::get('system', 'directory')) ? $publish : 0;
 
                if ($password1 != $confirm) {
@@ -332,12 +382,12 @@ class User
                                throw new Exception(L10n::t('An invitation is required.'));
                        }
 
                                throw new Exception(L10n::t('An invitation is required.'));
                        }
 
-                       if (!dba::exists('register', ['hash' => $invite_id])) {
+                       if (!DBA::exists('register', ['hash' => $invite_id])) {
                                throw new Exception(L10n::t('Invitation could not be verified.'));
                        }
                }
 
                                throw new Exception(L10n::t('Invitation could not be verified.'));
                        }
                }
 
-               if (!x($username) || !x($email) || !x($nickname)) {
+               if (empty($username) || empty($email) || empty($nickname)) {
                        if ($openid_url) {
                                if (!Network::isUrlValid($openid_url)) {
                                        throw new Exception(L10n::t('Invalid OpenID url'));
                        if ($openid_url) {
                                if (!Network::isUrlValid($openid_url)) {
                                        throw new Exception(L10n::t('Invalid OpenID url'));
@@ -345,7 +395,7 @@ class User
                                $_SESSION['register'] = 1;
                                $_SESSION['openid'] = $openid_url;
 
                                $_SESSION['register'] = 1;
                                $_SESSION['openid'] = $openid_url;
 
-                               $openid = new LightOpenID;
+                               $openid = new LightOpenID($a->get_hostname());
                                $openid->identity = $openid_url;
                                $openid->returnUrl = System::baseUrl() . '/openid';
                                $openid->required = ['namePerson/friendly', 'contact/email', 'namePerson'];
                                $openid->identity = $openid_url;
                                $openid->returnUrl = System::baseUrl() . '/openid';
                                $openid->required = ['namePerson/friendly', 'contact/email', 'namePerson'];
@@ -394,15 +444,18 @@ class User
                if (!valid_email($email) || !Network::isEmailDomainValid($email)) {
                        throw new Exception(L10n::t('Not a valid email address.'));
                }
                if (!valid_email($email) || !Network::isEmailDomainValid($email)) {
                        throw new Exception(L10n::t('Not a valid email address.'));
                }
+               if (self::isNicknameBlocked($nickname)) {
+                       throw new Exception(L10n::t('The nickname was blocked from registration by the nodes admin.'));
+               }
 
 
-               if (Config::get('system', 'block_extended_register', false) && dba::exists('user', ['email' => $email])) {
+               if (Config::get('system', 'block_extended_register', false) && DBA::exists('user', ['email' => $email])) {
                        throw new Exception(L10n::t('Cannot use that email.'));
                }
 
                // Disallow somebody creating an account using openid that uses the admin email address,
                // since openid bypasses email verification. We'll allow it if there is not yet an admin account.
                        throw new Exception(L10n::t('Cannot use that email.'));
                }
 
                // Disallow somebody creating an account using openid that uses the admin email address,
                // since openid bypasses email verification. We'll allow it if there is not yet an admin account.
-               if (x($a->config, 'admin_email') && strlen($openid_url)) {
-                       $adminlist = explode(',', str_replace(' ', '', strtolower($a->config['admin_email'])));
+               if (Config::get('config', 'admin_email') && strlen($openid_url)) {
+                       $adminlist = explode(',', str_replace(' ', '', strtolower(Config::get('config', 'admin_email'))));
                        if (in_array(strtolower($email), $adminlist)) {
                                throw new Exception(L10n::t('Cannot use that email.'));
                        }
                        if (in_array(strtolower($email), $adminlist)) {
                                throw new Exception(L10n::t('Cannot use that email.'));
                        }
@@ -415,8 +468,8 @@ class User
                }
 
                // Check existing and deleted accounts for this nickname.
                }
 
                // Check existing and deleted accounts for this nickname.
-               if (dba::exists('user', ['nickname' => $nickname])
-                       || dba::exists('userd', ['username' => $nickname])
+               if (DBA::exists('user', ['nickname' => $nickname])
+                       || DBA::exists('userd', ['username' => $nickname])
                ) {
                        throw new Exception(L10n::t('Nickname is already registered. Please choose another.'));
                }
                ) {
                        throw new Exception(L10n::t('Nickname is already registered. Please choose another.'));
                }
@@ -439,7 +492,7 @@ class User
                $sprvkey = $sres['prvkey'];
                $spubkey = $sres['pubkey'];
 
                $sprvkey = $sres['prvkey'];
                $spubkey = $sres['pubkey'];
 
-               $insert_result = dba::insert('user', [
+               $insert_result = DBA::insert('user', [
                        'guid'     => generate_user_guid(),
                        'username' => $username,
                        'password' => $new_password_encoded,
                        'guid'     => generate_user_guid(),
                        'username' => $username,
                        'password' => $new_password_encoded,
@@ -452,14 +505,15 @@ class User
                        'sprvkey'  => $sprvkey,
                        'verified' => $verified,
                        'blocked'  => $blocked,
                        'sprvkey'  => $sprvkey,
                        'verified' => $verified,
                        'blocked'  => $blocked,
+                       'language' => $language,
                        'timezone' => 'UTC',
                        'register_date' => DateTimeFormat::utcNow(),
                        'default-location' => ''
                ]);
 
                if ($insert_result) {
                        'timezone' => 'UTC',
                        'register_date' => DateTimeFormat::utcNow(),
                        'default-location' => ''
                ]);
 
                if ($insert_result) {
-                       $uid = dba::lastInsertId();
-                       $user = dba::selectFirst('user', [], ['uid' => $uid]);
+                       $uid = DBA::lastInsertId();
+                       $user = DBA::selectFirst('user', [], ['uid' => $uid]);
                } else {
                        throw new Exception(L10n::t('An error occurred during registration. Please try again.'));
                }
                } else {
                        throw new Exception(L10n::t('An error occurred during registration. Please try again.'));
                }
@@ -470,14 +524,14 @@ class User
 
                // if somebody clicked submit twice very quickly, they could end up with two accounts
                // due to race condition. Remove this one.
 
                // if somebody clicked submit twice very quickly, they could end up with two accounts
                // due to race condition. Remove this one.
-               $user_count = dba::count('user', ['nickname' => $nickname]);
+               $user_count = DBA::count('user', ['nickname' => $nickname]);
                if ($user_count > 1) {
                if ($user_count > 1) {
-                       dba::delete('user', ['uid' => $uid]);
+                       DBA::delete('user', ['uid' => $uid]);
 
                        throw new Exception(L10n::t('Nickname is already registered. Please choose another.'));
                }
 
 
                        throw new Exception(L10n::t('Nickname is already registered. Please choose another.'));
                }
 
-               $insert_result = dba::insert('profile', [
+               $insert_result = DBA::insert('profile', [
                        'uid' => $uid,
                        'name' => $username,
                        'photo' => System::baseUrl() . "/photo/profile/{$uid}.jpg",
                        'uid' => $uid,
                        'name' => $username,
                        'photo' => System::baseUrl() . "/photo/profile/{$uid}.jpg",
@@ -488,14 +542,14 @@ class User
                        'profile-name' => L10n::t('default')
                ]);
                if (!$insert_result) {
                        'profile-name' => L10n::t('default')
                ]);
                if (!$insert_result) {
-                       dba::delete('user', ['uid' => $uid]);
+                       DBA::delete('user', ['uid' => $uid]);
 
                        throw new Exception(L10n::t('An error occurred creating your default profile. Please try again.'));
                }
 
                // Create the self contact
                if (!Contact::createSelfFromUserId($uid)) {
 
                        throw new Exception(L10n::t('An error occurred creating your default profile. Please try again.'));
                }
 
                // Create the self contact
                if (!Contact::createSelfFromUserId($uid)) {
-                       dba::delete('user', ['uid' => $uid]);
+                       DBA::delete('user', ['uid' => $uid]);
 
                        throw new Exception(L10n::t('An error occurred creating your self contact. Please try again.'));
                }
 
                        throw new Exception(L10n::t('An error occurred creating your self contact. Please try again.'));
                }
@@ -504,7 +558,7 @@ class User
                // right away as a default group for new contacts.
                $def_gid = Group::create($uid, L10n::t('Friends'));
                if (!$def_gid) {
                // right away as a default group for new contacts.
                $def_gid = Group::create($uid, L10n::t('Friends'));
                if (!$def_gid) {
-                       dba::delete('user', ['uid' => $uid]);
+                       DBA::delete('user', ['uid' => $uid]);
 
                        throw new Exception(L10n::t('An error occurred creating your default contact group. Please try again.'));
                }
 
                        throw new Exception(L10n::t('An error occurred creating your default contact group. Please try again.'));
                }
@@ -514,7 +568,7 @@ class User
                        $fields['allow_gid'] = '<' . $def_gid . '>';
                }
 
                        $fields['allow_gid'] = '<' . $def_gid . '>';
                }
 
-               dba::update('user', $fields, ['uid' => $uid]);
+               DBA::update('user', $fields, ['uid' => $uid]);
 
                // if we have no OpenID photo try to look up an avatar
                if (!strlen($photo)) {
 
                // if we have no OpenID photo try to look up an avatar
                if (!strlen($photo)) {
@@ -559,7 +613,7 @@ class User
                                }
 
                                if (!$photo_failure) {
                                }
 
                                if (!$photo_failure) {
-                                       dba::update('photo', ['profile' => 1], ['resource-id' => $hash]);
+                                       DBA::update('photo', ['profile' => 1], ['resource-id' => $hash]);
                                }
                        }
                }
                                }
                        }
                }
@@ -606,7 +660,7 @@ class User
         * @param string $password
         * @return NULL|boolean from notification() and email() inherited
         */
         * @param string $password
         * @return NULL|boolean from notification() and email() inherited
         */
-       public static function sendRegisterOpenEmail($email, $sitename, $siteurl, $username, $password)
+       public static function sendRegisterOpenEmail($email, $sitename, $siteurl, $username, $password, $user)
        {
                $preamble = deindent(L10n::t('
                        Dear %1$s,
        {
                $preamble = deindent(L10n::t('
                        Dear %1$s,
@@ -615,9 +669,9 @@ class User
                $body = deindent(L10n::t('
                        The login details are as follows:
 
                $body = deindent(L10n::t('
                        The login details are as follows:
 
-                       Site Location:  %1$s
-                       Login Name:             %2$s
-                       Password:               %3$s
+                       Site Location:  %3$s
+                       Login Name:             %1$s
+                       Password:               %5$s
 
                        You may change your password from your account "Settings" page after logging
                        in.
 
                        You may change your password from your account "Settings" page after logging
                        in.
@@ -636,14 +690,16 @@ class User
                        If you are new and do not know anybody here, they may help
                        you to make some new and interesting friends.
 
                        If you are new and do not know anybody here, they may help
                        you to make some new and interesting friends.
 
-                       If you ever want to delete your account, you can do so at %1$s/removeme
+                       If you ever want to delete your account, you can do so at %3$s/removeme
 
 
-                       Thank you and welcome to %4$s.'));
+                       Thank you and welcome to %2$s.'));
 
                $preamble = sprintf($preamble, $username, $sitename);
                $body = sprintf($body, $email, $sitename, $siteurl, $username, $password);
 
                return notification([
 
                $preamble = sprintf($preamble, $username, $sitename);
                $body = sprintf($body, $email, $sitename, $siteurl, $username, $password);
 
                return notification([
+                       'uid' => $user['uid'],
+                       'language' => $user['language'],
                        'type' => SYSTEM_EMAIL,
                        'to_email' => $email,
                        'subject'=> L10n::t('Registration details for %s', $sitename),
                        'type' => SYSTEM_EMAIL,
                        'to_email' => $email,
                        'subject'=> L10n::t('Registration details for %s', $sitename),
@@ -663,20 +719,21 @@ class User
 
                logger('Removing user: ' . $uid);
 
 
                logger('Removing user: ' . $uid);
 
-               $user = dba::selectFirst('user', [], ['uid' => $uid]);
+               $user = DBA::selectFirst('user', [], ['uid' => $uid]);
 
                Addon::callHooks('remove_user', $user);
 
                // save username (actually the nickname as it is guaranteed
                // unique), so it cannot be re-registered in the future.
 
                Addon::callHooks('remove_user', $user);
 
                // save username (actually the nickname as it is guaranteed
                // unique), so it cannot be re-registered in the future.
-               dba::insert('userd', ['username' => $user['nickname']]);
+               DBA::insert('userd', ['username' => $user['nickname']]);
 
                // The user and related data will be deleted in "cron_expire_and_remove_users" (cronjobs.php)
 
                // The user and related data will be deleted in "cron_expire_and_remove_users" (cronjobs.php)
-               dba::update('user', ['account_removed' => true, 'account_expires_on' => DateTimeFormat::utcNow()], ['uid' => $uid]);
+               DBA::update('user', ['account_removed' => true, 'account_expires_on' => DateTimeFormat::utcNow()], ['uid' => $uid]);
                Worker::add(PRIORITY_HIGH, "Notifier", "removeme", $uid);
 
                // Send an update to the directory
                Worker::add(PRIORITY_HIGH, "Notifier", "removeme", $uid);
 
                // Send an update to the directory
-               Worker::add(PRIORITY_LOW, "Directory", $user['url']);
+               $self = DBA::selectFirst('contact', ['url'], ['uid' => $uid, 'self' => true]);
+               Worker::add(PRIORITY_LOW, "Directory", $self['url']);
 
                if ($uid == local_user()) {
                        unset($_SESSION['authenticated']);
 
                if ($uid == local_user()) {
                        unset($_SESSION['authenticated']);