From: Olga Kornievskaia <kolga@xxxxxxxxxx>
During context establishment, when the client received
KRB5_AP_ERR_BAD_INTEGRITY error, it might be due to the server
updating its key material. To handle such error, get a new
service ticket and re-try the AP_REQ.
This functionality relies on the new API in libtirpc that
exposes the gss errors.
Signed-off-by: Olga Kornievskaia <kolga@xxxxxxxxxx>
---
utils/gssd/gssd_proc.c | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
diff --git a/utils/gssd/gssd_proc.c b/utils/gssd/gssd_proc.c
index 99761157..29600a3f 100644
--- a/utils/gssd/gssd_proc.c
+++ b/utils/gssd/gssd_proc.c
@@ -427,13 +427,32 @@ create_auth_rpc_client(struct clnt_info *clp,
auth = authgss_create_default(rpc_clnt, tgtname, &sec);
#endif
if (!auth) {
+#ifdef HAVE_TIRPC_GSS_SECCREATE
+ if (ret.minor_status == KRB5KRB_AP_ERR_BAD_INTEGRITY) {
+ printerr(2, "WARNING: server=%s failed context "
+ "creation with KRB5_AP_ERR_BAD_INTEGRITY\n",
+ clp->servername);
+ if (cred == GSS_C_NO_CREDENTIAL)
+ retval = gssd_refresh_krb5_machine_credential(clp->servername,
+ "*", NULL, 1);
+ if (!retval) {
+ auth = rpc_gss_seccreate(rpc_clnt, tgtname,
+ mechanism, rpcsec_gss_svc_none,
+ NULL, &req, &ret);
+ if (auth)
+ goto success;
+ }
+ }
+#endif
/* Our caller should print appropriate message */
printerr(2, "WARNING: Failed to create krb5 context for "
"user with uid %d for server %s\n",
uid, tgtname);
goto out_fail;
}
-
+#ifdef HAVE_TIRPC_GSS_SECCREATE
+success:
+#endif
/* Success !!! */
rpc_clnt->cl_auth = auth;
*clnt_return = rpc_clnt;
--
2.39.1
