Revert "Make use of ADD_TO_ARRAY"

This reverts commit 81f334bd6da601a040f754c46705cfa2fd4f8c45.
(This used to be commit d4d106776af3f475d46a4dd78794b7b48a3572af)

3 files changed, 96 insertions, 36 deletions

diff --git a/source3/winbindd/idmap.c b/source3/winbindd/idmap.c
index 504be22292..db17245b92 100644
--- a/source3/winbindd/idmap.c
+++ b/source3/winbindd/idmap.c
@@ -1177,8 +1177,7 @@ done:
 	return ret;
 }
 
-static NTSTATUS idmap_backends_sids_to_unixids(struct id_map **ids, int
-					       num_ids)
+static NTSTATUS idmap_backends_sids_to_unixids(struct id_map **ids)
 {
 	struct id_map ***dom_ids;
 	struct idmap_domain *dom;
@@ -1206,7 +1205,7 @@ static NTSTATUS idmap_backends_sids_to_unixids(struct id_map **ids, int
 
 	/* partition the requests by domain */
 
-	for (i = 0; i < num_ids; i++) {
+	for (i = 0; ids[i]; i++) {
 		uint32 idx;
 
 		if ((dom = find_idmap_domain_from_sid(ids[i]->sid)) == NULL) {
@@ -1246,7 +1245,7 @@ static NTSTATUS idmap_backends_sids_to_unixids(struct id_map **ids, int
 	/* ok all the backends have been contacted at this point */
 	/* let's see if we have any unmapped SID left and act accordingly */
 
-	for (i = 0; i < num_ids; i++) {
+	for (i = 0; ids[i]; i++) {
 		/* NOTE: this will NOT touch ID_EXPIRED entries that the backend
 		 * was not able to confirm/deny (offline mode) */
 		if (ids[i]->status == ID_UNKNOWN ||
@@ -1279,7 +1278,7 @@ done:
  idmap interface functions
 **************************************************************************/
 
-NTSTATUS idmap_unixids_to_sids(struct id_map **ids, int n_ids)
+NTSTATUS idmap_unixids_to_sids(struct id_map **ids)
 {
 	TALLOC_CTX *ctx;
 	NTSTATUS ret;
@@ -1307,7 +1306,7 @@ NTSTATUS idmap_unixids_to_sids(struct id_map **ids, int n_ids)
 	bids = NULL;
 	bi = 0;
 
-	for (i = 0; i < n_ids; i++) {
+	for (i = 0; ids[i]; i++) {
 
 		bool found, mapped, expired;
 
@@ -1332,12 +1331,38 @@ NTSTATUS idmap_unixids_to_sids(struct id_map **ids, int n_ids)
 			 * Need to ask the backend
 			 */
 
-			ADD_TO_ARRAY(ctx, struct id_map *, ids[i], &bids, &bn);
-			if (bids == NULL) {
-				DEBUG(1, ("Out of memory!\n"));
-				talloc_free(ctx);
-				return NT_STATUS_NO_MEMORY;
+			if ( ! bids) {
+				/* alloc space for ids to be resolved by
+				 * backends (realloc ten by ten) */
+				bids = TALLOC_ARRAY(ctx, struct id_map *, 10);
+				if ( ! bids) {
+					DEBUG(1, ("Out of memory!\n"));
+					talloc_free(ctx);
+					return NT_STATUS_NO_MEMORY;
+				}
+				bn = 10;
 			}
+
+			/* add this id to the ones to be retrieved
+			 * from the backends */
+			bids[bi] = ids[i];
+			bi++;
+
+			/* check if we need to allocate new space
+			 *  on the rids array */
+			if (bi == bn) {
+				bn += 10;
+				bids = talloc_realloc(ctx, bids,
+						      struct id_map *, bn);
+				if ( ! bids) {
+					DEBUG(1, ("Out of memory!\n"));
+					talloc_free(ctx);
+					return NT_STATUS_NO_MEMORY;
+				}
+			}
+
+			/* make sure the last element is NULL */
+			bids[bi] = NULL;
 		}
 	}
 
@@ -1383,12 +1408,12 @@ done:
 	return ret;
 }
 
-NTSTATUS idmap_sids_to_unixids(struct id_map **ids, int n_ids)
+NTSTATUS idmap_sids_to_unixids(struct id_map **ids)
 {
 	TALLOC_CTX *ctx;
 	NTSTATUS ret;
 	struct id_map **bids;
-	int i;
+	int i, bi;
 	int bn = 0;
 	struct winbindd_domain *our_domain = find_our_domain();
 
@@ -1409,8 +1434,9 @@ NTSTATUS idmap_sids_to_unixids(struct id_map **ids, int n_ids)
 
 	/* no ids to be asked to the backends by default */
 	bids = NULL;
+	bi = 0;
 
-	for (i = 0; i < n_ids; i++) {
+	for (i = 0; ids[i]; i++) {
 
 		bool found, mapped, expired;
 
@@ -1435,12 +1461,38 @@ NTSTATUS idmap_sids_to_unixids(struct id_map **ids, int n_ids)
 			 * Need to ask the backends
 			 */
 
-			ADD_TO_ARRAY(ctx, struct id_map *, ids[i], &bids, &bn);
-			if (bids == NULL) {
-				DEBUG(1, ("Out of memory!\n"));
-				talloc_free(ctx);
-				return NT_STATUS_NO_MEMORY;
+			if ( ! bids) {
+				/* alloc space for ids to be resolved
+				   by backends (realloc ten by ten) */
+				bids = TALLOC_ARRAY(ctx, struct id_map *, 10);
+				if ( ! bids) {
+					DEBUG(1, ("Out of memory!\n"));
+					talloc_free(ctx);
+					return NT_STATUS_NO_MEMORY;
+				}
+				bn = 10;
+			}
+
+			/* add this id to the ones to be retrieved
+			 * from the backends */
+			bids[bi] = ids[i];
+			bi++;
+
+			/* check if we need to allocate new space
+			 * on the ids array */
+			if (bi == bn) {
+				bn += 10;
+				bids = talloc_realloc(ctx, bids,
+						      struct id_map *, bn);
+				if ( ! bids) {
+					DEBUG(1, ("Out of memory!\n"));
+					talloc_free(ctx);
+					return NT_STATUS_NO_MEMORY;
+				}
 			}
+
+			/* make sure the last element is NULL */
+			bids[bi] = NULL;
 		}
 	}
 
@@ -1453,11 +1505,11 @@ NTSTATUS idmap_sids_to_unixids(struct id_map **ids, int n_ids)
 			goto done;
 		}
 
-		ret = idmap_backends_sids_to_unixids(bids, bn);
+		ret = idmap_backends_sids_to_unixids(bids);
 		IDMAP_CHECK_RET(ret);
 
 		/* update the cache */
-		for (i = 0; i < bn; i++) {
+		for (i = 0; bids[i]; i++) {
 			if (bids[i]->status == ID_MAPPED) {
 				ret = idmap_cache_set(bids[i]);
 			} else if (bids[i]->status == ID_EXPIRED) {
diff --git a/source3/winbindd/idmap_util.c b/source3/winbindd/idmap_util.c
index 9819fe15f0..78f4d13ec1 100644
--- a/source3/winbindd/idmap_util.c
+++ b/source3/winbindd/idmap_util.c
@@ -31,16 +31,18 @@ NTSTATUS idmap_uid_to_sid(DOM_SID *sid, uid_t uid)
 {
 	NTSTATUS ret;
 	struct id_map map;
-	struct id_map *maps;
+	struct id_map *maps[2];
 
 	DEBUG(10,("uid = [%lu]\n", (unsigned long)uid));
 
 	map.sid = sid;
 	map.xid.type = ID_TYPE_UID;
 	map.xid.id = uid;
-	maps = &map;
 
-	ret = idmap_unixids_to_sids(&maps, 1);
+	maps[0] = &map;
+	maps[1] = NULL;
+
+	ret = idmap_unixids_to_sids(maps);
 	if ( ! NT_STATUS_IS_OK(ret)) {
 		DEBUG(10, ("error mapping uid [%lu]\n", (unsigned long)uid));
 		return ret;
@@ -63,16 +65,18 @@ NTSTATUS idmap_gid_to_sid(DOM_SID *sid, gid_t gid)
 {
 	NTSTATUS ret;
 	struct id_map map;
-	struct id_map *maps;
+	struct id_map *maps[2];
 
 	DEBUG(10,("gid = [%lu]\n", (unsigned long)gid));
 
 	map.sid = sid;
 	map.xid.type = ID_TYPE_GID;
 	map.xid.id = gid;
-	maps = &map;
 
-	ret = idmap_unixids_to_sids(&maps, 1);
+	maps[0] = &map;
+	maps[1] = NULL;
+
+	ret = idmap_unixids_to_sids(maps);
 	if ( ! NT_STATUS_IS_OK(ret)) {
 		DEBUG(10, ("error mapping gid [%lu]\n", (unsigned long)gid));
 		return ret;
@@ -95,15 +99,17 @@ NTSTATUS idmap_sid_to_uid(DOM_SID *sid, uid_t *uid)
 {
 	NTSTATUS ret;
 	struct id_map map;
-	struct id_map *maps;
+	struct id_map *maps[2];
 
 	DEBUG(10,("idmap_sid_to_uid: sid = [%s]\n", sid_string_dbg(sid)));
 
 	map.sid = sid;
-	map.xid.type = ID_TYPE_UID;
-	maps = &map;
+	map.xid.type = ID_TYPE_UID;	
 
-	ret = idmap_sids_to_unixids(&maps, 1);
+	maps[0] = &map;
+	maps[1] = NULL;
+
+	ret = idmap_sids_to_unixids(maps);
 	if ( ! NT_STATUS_IS_OK(ret)) {
 		DEBUG(10, ("error mapping sid [%s] to uid\n", 
 			   sid_string_dbg(sid)));
@@ -133,15 +139,17 @@ NTSTATUS idmap_sid_to_gid(DOM_SID *sid, gid_t *gid)
 {
 	NTSTATUS ret;
 	struct id_map map;
-	struct id_map *maps;
+	struct id_map *maps[2];
 
 	DEBUG(10,("idmap_sid_to_gid: sid = [%s]\n", sid_string_dbg(sid)));
 
 	map.sid = sid;
 	map.xid.type = ID_TYPE_GID;
-	maps = &map;
 
-	ret = idmap_sids_to_unixids(&maps, 1);
+	maps[0] = &map;
+	maps[1] = NULL;
+
+	ret = idmap_sids_to_unixids(maps);
 	if ( ! NT_STATUS_IS_OK(ret)) {
 		DEBUG(10, ("error mapping sid [%s] to gid\n", 
 			   sid_string_dbg(sid)));
diff --git a/source3/winbindd/winbindd_idmap.c b/source3/winbindd/winbindd_idmap.c
index 98f8548083..3c7aa2d0c2 100644
--- a/source3/winbindd/winbindd_idmap.c
+++ b/source3/winbindd/winbindd_idmap.c
@@ -224,7 +224,7 @@ enum winbindd_result winbindd_dual_sids2xids(struct winbindd_domain *domain,
 	sids = (DOM_SID *)state->request.extra_data.data;
 	num = state->request.extra_len / sizeof(DOM_SID);
 
-	ids = TALLOC_ARRAY(state->mem_ctx, struct id_map *, num);
+	ids = TALLOC_ZERO_ARRAY(state->mem_ctx, struct id_map *, num + 1);
 	if ( ! ids) {
 		DEBUG(0, ("Out of memory!\n"));
 		return WINBINDD_ERROR;
@@ -239,7 +239,7 @@ enum winbindd_result winbindd_dual_sids2xids(struct winbindd_domain *domain,
 		ids[i]->sid = &sids[i];
 	}
 
-	result = idmap_sids_to_unixids(ids, num);
+	result = idmap_sids_to_unixids(ids);
 
 	if (NT_STATUS_IS_OK(result)) {