From 63bbc2aea6edf51fb4c2dd678b780b2ade9542ce Mon Sep 17 00:00:00 2001
From: Stefan Metzmacher <metze@samba.org>
Date: Thu, 19 Jan 2006 13:01:12 +0000
Subject: r13035: active,special group replicas are overwritten by
 tombstone,special group replicas

metze
(This used to be commit cf669e4b2a4dcfb080cbb01a108797acad802f36)
---
 source4/torture/nbt/winsreplication.c      | 122 +++++++++++++++++++++++++++++
 source4/wrepl_server/wrepl_apply_records.c |  20 ++++-
 2 files changed, 141 insertions(+), 1 deletion(-)

(limited to 'source4')

diff --git a/source4/torture/nbt/winsreplication.c b/source4/torture/nbt/winsreplication.c
index 5b8aa0119a..cf6f3d4ed7 100644
--- a/source4/torture/nbt/winsreplication.c
+++ b/source4/torture/nbt/winsreplication.c
@@ -4623,6 +4623,128 @@ static BOOL test_conflict_different_owner(struct test_wrepl_conflict_conn *ctx)
 			.apply_expected	= True,
 		}
 	},
+
+	/* 
+	 * sgroup,active vs. sgroup,tombstone different no addresses, special
+	 * => should be replaced
+	 */
+	{
+		.line	= __location__,
+		.name	= _NBT_NAME("_DIFF_OWNER", 0x00, NULL),
+		.comment= "A:B_3_4_X_3_4 vs. B:NULL => B:NULL",
+		.extra	= True,
+		.r1	= {
+			.owner		= &ctx->a,
+			.type		= WREPL_TYPE_SGROUP,
+			.state		= WREPL_STATE_ACTIVE,
+			.node		= WREPL_NODE_B,
+			.is_static	= False,
+			.num_ips	= ARRAY_SIZE(addresses_B_3_4_X_3_4),
+			.ips		= addresses_B_3_4_X_3_4,
+			.apply_expected	= True,
+		},
+		.r2	= {
+			.owner		= &ctx->b,
+			.type		= WREPL_TYPE_SGROUP,
+			.state		= WREPL_STATE_TOMBSTONE,
+			.node		= WREPL_NODE_B,
+			.is_static	= False,
+			.num_ips	= 0,
+			.ips		= NULL,
+			.apply_expected	= True,
+		}
+	},
+	/* 
+	 * sgroup,active vs. sgroup,tombstone different addresses
+	 * => should be replaced
+	 */
+	{
+		.line	= __location__,
+		.name	= _NBT_NAME("_DIFF_OWNER", 0x00, NULL),
+		.comment= "A:B_3_4_X_3_4 vs. B:A_3_4 => B:A_3_4",
+		.extra	= True,
+		.r1	= {
+			.owner		= &ctx->a,
+			.type		= WREPL_TYPE_SGROUP,
+			.state		= WREPL_STATE_ACTIVE,
+			.node		= WREPL_NODE_B,
+			.is_static	= False,
+			.num_ips	= ARRAY_SIZE(addresses_B_3_4_X_3_4),
+			.ips		= addresses_B_3_4_X_3_4,
+			.apply_expected	= True,
+		},
+		.r2	= {
+			.owner		= &ctx->b,
+			.type		= WREPL_TYPE_SGROUP,
+			.state		= WREPL_STATE_TOMBSTONE,
+			.node		= WREPL_NODE_B,
+			.is_static	= False,
+			.num_ips	= ARRAY_SIZE(addresses_A_3_4),
+			.ips		= addresses_A_3_4,
+			.apply_expected	= True,
+		}
+	},
+	/* 
+	 * sgroup,active vs. sgroup,tombstone subset addresses
+	 * => should be replaced
+	 */
+	{
+		.line	= __location__,
+		.name	= _NBT_NAME("_DIFF_OWNER", 0x00, NULL),
+		.comment= "A:B_3_4_X_3_4 vs. B:B_3_4 => B:B_3_4",
+		.extra	= True,
+		.r1	= {
+			.owner		= &ctx->a,
+			.type		= WREPL_TYPE_SGROUP,
+			.state		= WREPL_STATE_ACTIVE,
+			.node		= WREPL_NODE_B,
+			.is_static	= False,
+			.num_ips	= ARRAY_SIZE(addresses_B_3_4_X_3_4),
+			.ips		= addresses_B_3_4_X_3_4,
+			.apply_expected	= True,
+		},
+		.r2	= {
+			.owner		= &ctx->b,
+			.type		= WREPL_TYPE_SGROUP,
+			.state		= WREPL_STATE_TOMBSTONE,
+			.node		= WREPL_NODE_B,
+			.is_static	= False,
+			.num_ips	= ARRAY_SIZE(addresses_B_3_4),
+			.ips		= addresses_B_3_4,
+			.apply_expected	= True,
+		}
+	},
+	/* 
+	 * sgroup,active vs. sgroup,active same addresses
+	 * => should be replaced
+	 */
+	{
+		.line	= __location__,
+		.name	= _NBT_NAME("_DIFF_OWNER", 0x00, NULL),
+		.comment= "A:B_3_4_X_3_4 vs. B:B_3_4_X_3_4 => B:B_3_4_X_3_4",
+		.extra	= True,
+		.r1	= {
+			.owner		= &ctx->a,
+			.type		= WREPL_TYPE_SGROUP,
+			.state		= WREPL_STATE_ACTIVE,
+			.node		= WREPL_NODE_B,
+			.is_static	= False,
+			.num_ips	= ARRAY_SIZE(addresses_B_3_4_X_3_4),
+			.ips		= addresses_B_3_4_X_3_4,
+			.apply_expected	= True,
+		},
+		.r2	= {
+			.owner		= &ctx->b,
+			.type		= WREPL_TYPE_SGROUP,
+			.state		= WREPL_STATE_TOMBSTONE,
+			.node		= WREPL_NODE_B,
+			.is_static	= False,
+			.num_ips	= ARRAY_SIZE(addresses_B_3_4_X_3_4),
+			.ips		= addresses_B_3_4_X_3_4,
+			.apply_expected	= True,
+		}
+	},
+
 	/* 
 	 * This should be the last record in this array,
 	 * we need to make sure the we leave a tombstoned unique entry
diff --git a/source4/wrepl_server/wrepl_apply_records.c b/source4/wrepl_server/wrepl_apply_records.c
index 5d7958926c..1da9c03f36 100644
--- a/source4/wrepl_server/wrepl_apply_records.c
+++ b/source4/wrepl_server/wrepl_apply_records.c
@@ -265,6 +265,14 @@ SGROUP,ACTIVE vs. SGROUP,ACTIVE A:X_3_4 vs. B:A_3_4 => C:A_3_4_X_3_4 => SGROUP_M
 SGROUP,ACTIVE vs. SGROUP,ACTIVE A:A_3_4_X_3_4 vs. B:A_3_4_OWNER_B => B:A_3_4_OWNER_B_X_3_4 => SGROUP_MERGE
 SGROUP,ACTIVE vs. SGROUP,ACTIVE A:B_3_4_X_3_4 vs. B:B_3_4_X_1_2 => C:B_3_4_X_1_2_3_4 => SGROUP_MERGE
 SGROUP,ACTIVE vs. SGROUP,ACTIVE A:B_3_4_X_3_4 vs. B:NULL => B:X_3_4 => SGROUP_MERGE
+
+ 
+this is a bit strange, incoming tombstone replicas always replace old replicas:
+
+SGROUP,ACTIVE vs. SGROUP,TOMBSTONE A:B_3_4_X_3_4 vs. B:NULL => B:NULL => REPLACE
+SGROUP,ACTIVE vs. SGROUP,TOMBSTONE A:B_3_4_X_3_4 vs. B:A_3_4 => B:A_3_4 => REPLACE
+SGROUP,ACTIVE vs. SGROUP,TOMBSTONE A:B_3_4_X_3_4 vs. B:B_3_4 => B:B_3_4 => REPLACE
+SGROUP,ACTIVE vs. SGROUP,TOMBSTONE A:B_3_4_X_3_4 vs. B:B_3_4_X_3_4 => B:B_3_4_X_3_4 => REPLACE
 */
 static enum _R_ACTION replace_sgroup_replica_vs_X_replica(struct winsdb_record *r1, struct wrepl_name *r2)
 {
@@ -273,11 +281,21 @@ static enum _R_ACTION replace_sgroup_replica_vs_X_replica(struct winsdb_record *
 		return R_DO_REPLACE;
 	}
 
-	if (!R_IS_SGROUP(r2) || !R_IS_ACTIVE(r2)) {
+	if (!R_IS_SGROUP(r2)) {
 		/* NOT REPLACE */
 		return R_NOT_REPLACE;
 	}
 
+	/*
+	 * this is strange, but correct
+	 * the incoming tombstone replace the current active
+	 * record
+	 */
+	if (!R_IS_ACTIVE(r2)) {
+		/* REPLACE */
+		return R_DO_REPLACE;
+	}
+
 	if (r2->num_addresses == 0) {
 		if (r_contains_addrs_from_owner(r1, r2->owner)) {
 			/* not handled here: MERGE */
-- 
cgit