Do not always return PAM_SYSTEM_ERR when offline krb5 authentication fails

1 files changed, 42 insertions, 0 deletions

diff --git a/src/util/auth_utils.h b/src/util/auth_utils.h
new file mode 100644
index 00000000..e9e60a08
--- /dev/null
+++ b/src/util/auth_utils.h
@@ -0,0 +1,42 @@
+/*
+    SSSD
+
+    Authentication utility functions
+
+    Authors:
+        Jakub Hrozek <jhrozek@redhat.com>
+
+    Copyright (C) 2012 Red Hat
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <errno.h>
+#include <security/pam_appl.h>
+
+static inline int cached_login_pam_status(int auth_res)
+{
+    switch (auth_res) {
+        case EOK:
+            return PAM_SUCCESS;
+        case ENOENT:
+            return PAM_AUTHINFO_UNAVAIL;
+        case EINVAL:
+            return PAM_AUTH_ERR;
+        case EACCES:
+            return PAM_PERM_DENIED;
+    }
+
+    return PAM_SYSTEM_ERR;
+}