From d585003d07f5868501ff10021fc64f5364041922 Mon Sep 17 00:00:00 2001
From: Stefan Metzmacher <metze@samba.org>
Date: Fri, 2 Mar 2012 05:08:17 +0100
Subject: [PATCH 1/3] s3:winbindd: discard the expired gid cache if we're online (bug #9002)

This matches the uid case...

metze
---
 source3/winbindd/winbindd_sids_to_xids.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/source3/winbindd/winbindd_sids_to_xids.c b/source3/winbindd/winbindd_sids_to_xids.c
index 8201739..aa179b7 100644
--- a/source3/winbindd/winbindd_sids_to_xids.c
+++ b/source3/winbindd/winbindd_sids_to_xids.c
@@ -130,7 +130,7 @@ static bool winbindd_sids_to_xids_in_cache(struct dom_sid *sid,
 		return false;
 	}
 	if (idmap_cache_find_sid2unixid(sid, &id, &expired)) {
-		if (expired && is_domain_offline(find_our_domain())) {
+		if (expired && is_domain_online(find_our_domain())) {
 			return false;
 		}
 		map->sid = sid;
-- 
1.7.4.1


From b8e76a958f84cdacdc4740584732d34d076ce7e5 Mon Sep 17 00:00:00 2001
From: Stefan Metzmacher <metze@samba.org>
Date: Thu, 24 May 2012 09:08:21 +0200
Subject: [PATCH 2/3] s3:winbindd: do not expose negative cache idmap entries as valid mappings (bug #9002)

metze
---
 source3/winbindd/winbindd_sids_to_xids.c |   25 +++++++++++++++++++------
 1 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/source3/winbindd/winbindd_sids_to_xids.c b/source3/winbindd/winbindd_sids_to_xids.c
index aa179b7..09d9a9b 100644
--- a/source3/winbindd/winbindd_sids_to_xids.c
+++ b/source3/winbindd/winbindd_sids_to_xids.c
@@ -240,22 +240,30 @@ NTSTATUS winbindd_sids_to_xids_recv(struct tevent_req *req,
 
 	for (i=0; i<state->num_sids; i++) {
 		char type;
-		uint64_t unix_id = (uint64_t)-1;
+		uint32_t unix_id = UINT32_MAX;
 		bool found = true;
 
 		if (state->cached[i].sid != NULL) {
 			unix_id = state->cached[i].xid.id;
-			if (state->cached[i].xid.type == ID_TYPE_UID) {
+
+			switch (state->cached[i].xid.type) {
+			case ID_TYPE_UID:
 				type = 'U';
-			} else {
+				break;
+			case ID_TYPE_GID:
 				type = 'G';
+				break;
+			case ID_TYPE_BOTH:
+				type = 'B';
+				break;
+			default:
+				found = false;
+				break;
 			}
 		} else {
 			struct unixid id;
+
 			unix_id = state->ids.ids[num_non_cached].unix_id;
-			if (unix_id == -1) {
-				found = false;
-			}
 
 			id.id = unix_id;
 			id.type = state->ids.ids[num_non_cached].type;
@@ -275,10 +283,15 @@ NTSTATUS winbindd_sids_to_xids_recv(struct tevent_req *req,
 				break;
 			default:
 				found = false;
+				break;
 			}
 			num_non_cached += 1;
 		}
 
+		if (unix_id == UINT32_MAX) {
+			found = false;
+		}
+
 		if (found) {
 			result = talloc_asprintf_append_buffer(
 				result, "%c%lu\n", type,
-- 
1.7.4.1


From 677c816d199902e9ffba73d2451cda93991797e4 Mon Sep 17 00:00:00 2001
From: Stefan Metzmacher <metze@samba.org>
Date: Wed, 20 Jun 2012 14:07:51 +0200
Subject: [PATCH 3/3] s3:idmap_cache: also store negative entries for unknown sids

metze
---
 source3/lib/idmap_cache.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/source3/lib/idmap_cache.c b/source3/lib/idmap_cache.c
index 011a017..edf37a8 100644
--- a/source3/lib/idmap_cache.c
+++ b/source3/lib/idmap_cache.c
@@ -89,6 +89,10 @@ bool idmap_cache_find_sid2unixid(const struct dom_sid *sid, struct unixid *id,
 			tmp_id.type = ID_TYPE_BOTH;
 			break;
 
+		case 'N':
+			tmp_id.type = ID_TYPE_NOT_SPECIFIED;
+			break;
+
 		case '\0':
 			DEBUG(0, ("FAILED to parse value for key [%s] "
 				  "(id=[%llu], endptr=[%s]): "
@@ -289,6 +293,9 @@ void idmap_cache_set_sid2unixid(const struct dom_sid *sid, struct unixid *unix_i
 		case ID_TYPE_BOTH:
 			fstr_sprintf(value, "%d:B", (int)unix_id->id);
 			break;
+		case ID_TYPE_NOT_SPECIFIED:
+			fstr_sprintf(value, "%d:N", (int)unix_id->id);
+			break;
 		default:
 			return;
 		}
-- 
1.7.4.1