libnet: ignore realm setting for domain security joins to AD domains if 'winbind...

Inspired by initial patch from Matt Rogers @ RedHat.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11977

Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Guenther Deschner <gd@samba.org>
Autobuild-User(master): Michael Adam <obnox@samba.org>
Autobuild-Date(master): Wed Jun 22 05:05:47 CEST 2016 on sn-devel-144

diff --git a/source3/libnet/libnet_join.c b/source3/libnet/libnet_join.c
index c98862ad554182cc4eab4e528a20e5cfbe57a8b5..df4fa72fe234e84f4b01e28046a29169cdb121a0 100644 (file)
--- a/source3/libnet/libnet_join.c
+++ b/source3/libnet/libnet_join.c
@@ -2303,6 +2303,7 @@ static WERROR libnet_join_check_config(TALLOC_CTX *mem_ctx,
        bool valid_security = false;
        bool valid_workgroup = false;
        bool valid_realm = false;
+       bool ignored_realm = false;
 
        /* check if configuration is already set correctly */
 
@@ -2322,11 +2323,26 @@ static WERROR libnet_join_check_config(TALLOC_CTX *mem_ctx,
                        valid_realm = strequal(lp_realm(), r->out.dns_domain_name);
                        switch (lp_security()) {
                        case SEC_DOMAIN:
+                               if (!valid_realm && lp_winbind_rpc_only()) {
+                                       valid_realm = true;
+                                       ignored_realm = true;
+                               }
                        case SEC_ADS:
                                valid_security = true;
                        }
 
                        if (valid_workgroup && valid_realm && valid_security) {
+                               if (ignored_realm && !r->in.modify_config)
+                               {
+                                       libnet_join_set_error_string(mem_ctx, r,
+                                               "Warning: ignoring realm when "
+                                               "joining AD domain with "
+                                               "'security=domain' and "
+                                               "'winbind rpc only = yes'. "
+                                               "(realm set to '%s', "
+                                               "should be '%s').", lp_realm(),
+                                               r->out.dns_domain_name);
+                               }
                                /* nothing to be done */
                                return WERR_OK;
                        }