s4:kdc: Check parameters of samba_kdc_get_user_info_from_db()

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

diff --git a/source4/kdc/pac-glue.c b/source4/kdc/pac-glue.c
index 8fde82b303d4fe87f528a3ebcdbd4eee54317769..1180db9d04f90165ff5f3d3d4b4d5fae0a1f61df 100644 (file)
--- a/source4/kdc/pac-glue.c
+++ b/source4/kdc/pac-glue.c
@@ -1127,6 +1127,22 @@ krb5_error_code samba_kdc_get_user_info_from_db(TALLOC_CTX *mem_ctx,
        NTSTATUS nt_status;
        struct auth_user_info_dc *info = NULL;
 
+       if (samdb == NULL) {
+               return EINVAL;
+       }
+
+       if (msg == NULL) {
+               return EINVAL;
+       }
+
+       if (info_out == NULL) {
+               return EINVAL;
+       }
+
+       if (entry == NULL) {
+               return KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN;
+       }
+
        if (entry->info_from_db == NULL) {
                struct loadparm_context *lp_ctx = entry->kdc_db_ctx->lp_ctx;