-}
-else {
-
- unset($_SESSION['authenticated']);
- unset($_SESSION['uid']);
- unset($_SESSION['visitor_id']);
- unset($_SESSION['administrator']);
- unset($_SESSION['cid']);
- unset($_SESSION['theme']);
- unset($_SESSION['my_url']);
-
- $encrypted = hash('whirlpool',trim($_POST['password']));
-
- if((x($_POST,'auth-params')) && $_POST['auth-params'] === 'login') {
-
- // process login request
-
- $r = q("SELECT * FROM `user`
- WHERE ( `email` = '%s' OR `nickname` = '%s' ) AND `password` = '%s' AND `blocked` = 0 AND `verified` = 1 LIMIT 1",
- dbesc(trim($_POST['login-name'])),
- dbesc(trim($_POST['login-name'])),
- dbesc($encrypted));
- if(($r === false) || (! count($r))) {
- notice( t('Login failed.') . EOL );
- goaway($a->get_baseurl());
- }
- $_SESSION['uid'] = $r[0]['uid'];
- $_SESSION['theme'] = $r[0]['theme'];
- $_SESSION['authenticated'] = 1;
- $_SESSION['my_url'] = $a->get_baseurl() . '/profile/' . $r[0]['nickname'];
-
- notice( t("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'] = $a->cid;
+
+ if (x($_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
+
+ $r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`
+ FROM `user` WHERE (`email` = '%s' OR `nickname` = '%s')
+ AND `password` = '%s' AND NOT `blocked` AND NOT `account_expired` AND NOT `account_removed` AND `verified` LIMIT 1",
+ dbesc(trim($_POST['username'])),
+ dbesc(trim($_POST['username'])),
+ dbesc($encrypted)
+ );
+ if (dbm::is_result($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());