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-rw-r--r--src/kdc/do_as_req.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/src/kdc/do_as_req.c b/src/kdc/do_as_req.c
index 48a55e4..fa98ae3 100644
--- a/src/kdc/do_as_req.c
+++ b/src/kdc/do_as_req.c
@@ -88,6 +88,17 @@ prepare_error_as(struct kdc_request_state *, krb5_kdc_req *,
int, krb5_data *, krb5_principal, krb5_data **,
const char *);
+/* Determine the key-expiration value according to RFC 4120 section 5.4.2. */
+static krb5_timestamp
+get_key_exp(krb5_db_entry *entry)
+{
+ if (entry->expiration == 0)
+ return entry->pw_expiration;
+ if (entry->pw_expiration == 0)
+ return entry->expiration;
+ return min(entry->expiration, entry->pw_expiration);
+}
+
/*ARGSUSED*/
krb5_error_code
process_as_req(krb5_kdc_req *request, krb5_data *req_pkt,
@@ -541,7 +552,7 @@ process_as_req(krb5_kdc_req *request, krb5_data *req_pkt,
goto errout;
}
reply_encpart.nonce = request->nonce;
- reply_encpart.key_exp = client->expiration;
+ reply_encpart.key_exp = get_key_exp(client);
reply_encpart.flags = enc_tkt_reply.flags;
reply_encpart.server = ticket_reply.server;