From e596ca6fcbb09675cede3f4919f0e9495a3147bb Mon Sep 17 00:00:00 2001
From: Daniel Juarez <daniel.juarez.gonzalez@cern.ch>
Date: Tue, 22 Feb 2022 12:02:44 +0100
Subject: [PATCH] Check ccache size before trying to use it

---
 builder/kojid | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/builder/kojid b/builder/kojid
index c7fdef01..522b82f4 100755
--- a/builder/kojid
+++ b/builder/kojid
@@ -6617,6 +6617,10 @@ if __name__ == "__main__":
         if krb_principal is None:
             krb_principal = options.host_principal_format % socket.getfqdn()
         try:
+            # Check ccache is not empty or authentication will fail
+            if os.stat(options.ccache).st_size == 0:
+                os.remove(options.ccache)
+
             session.gssapi_login(principal=krb_principal,
                                  keytab=options.keytab,
                                  ccache=options.ccache)