1 files changed, 144 insertions, 3 deletions

diff --git a/source3/nsswitch/winbindd_group.c b/source3/nsswitch/winbindd_group.c
index 1b21352c86..e5cdc404a0 100644
--- a/source3/nsswitch/winbindd_group.c
+++ b/source3/nsswitch/winbindd_group.c
@@ -31,9 +31,150 @@ extern BOOL opt_nocache;
 #undef DBGC_CLASS
 #define DBGC_CLASS DBGC_WINBIND
 
-/***************************************************************
- Empty static struct for negative caching.
-****************************************************************/
+static void add_member(const char *domain, const char *user,
+	   char **pp_members, size_t *p_num_members)
+{
+	fstring name;
+
+	fill_domain_username(name, domain, user, True);
+	safe_strcat(name, ",", sizeof(name)-1);
+	string_append(pp_members, name);
+	*p_num_members += 1;
+}
+
+/**********************************************************************
+ Add member users resulting from sid. Expand if it is a domain group.
+**********************************************************************/
+
+static void add_expanded_sid(const DOM_SID *sid, char **pp_members, size_t *p_num_members)
+{
+	DOM_SID dom_sid;
+	uint32 rid;
+	struct winbindd_domain *domain;
+	size_t i;
+
+	char *domain_name = NULL;
+	char *name = NULL;
+	enum lsa_SidType type;
+
+	uint32 num_names;
+	DOM_SID *sid_mem;
+	char **names;
+	uint32 *types;
+
+	NTSTATUS result;
+
+	TALLOC_CTX *mem_ctx = talloc_init("add_expanded_sid");
+
+	if (mem_ctx == NULL) {
+		DEBUG(1, ("talloc_init failed\n"));
+		return;
+	}
+
+	sid_copy(&dom_sid, sid);
+	sid_split_rid(&dom_sid, &rid);
+
+	domain = find_lookup_domain_from_sid(sid);
+
+	if (domain == NULL) {
+		DEBUG(3, ("Could not find domain for sid %s\n",
+			  sid_string_static(sid)));
+		goto done;
+	}
+
+	result = domain->methods->sid_to_name(domain, mem_ctx, sid,
+					      &domain_name, &name, &type);
+
+	if (!NT_STATUS_IS_OK(result)) {
+		DEBUG(3, ("sid_to_name failed for sid %s\n",
+			  sid_string_static(sid)));
+		goto done;
+	}
+
+	DEBUG(10, ("Found name %s, type %d\n", name, type));
+
+	if (type == SID_NAME_USER) {
+		add_member(domain_name, name, pp_members, p_num_members);
+		goto done;
+	}
+
+	if (type != SID_NAME_DOM_GRP) {
+		DEBUG(10, ("Alias member %s neither user nor group, ignore\n",
+			   name));
+		goto done;
+	}
+
+	/* Expand the domain group, this must be done via the target domain */
+
+	domain = find_domain_from_sid(sid);
+
+	if (domain == NULL) {
+		DEBUG(3, ("Could not find domain from SID %s\n",
+			  sid_string_static(sid)));
+		goto done;
+	}
+
+	result = domain->methods->lookup_groupmem(domain, mem_ctx,
+						  sid, &num_names,
+						  &sid_mem, &names,
+						  &types);
+
+	if (!NT_STATUS_IS_OK(result)) {
+		DEBUG(10, ("Could not lookup group members for %s: %s\n",
+			   name, nt_errstr(result)));
+		goto done;
+	}
+
+	for (i=0; i<num_names; i++) {
+		DEBUG(10, ("Adding group member SID %s\n",
+			   sid_string_static(&sid_mem[i])));
+
+		if (types[i] != SID_NAME_USER) {
+			DEBUG(1, ("Hmmm. Member %s of group %s is no user. "
+				  "Ignoring.\n", names[i], name));
+			continue;
+		}
+
+		add_member(domain->name, names[i], pp_members, p_num_members);
+	}
+
+ done:
+	talloc_destroy(mem_ctx);
+	return;
+}
+
+static BOOL fill_passdb_alias_grmem(struct winbindd_domain *domain,
+			     DOM_SID *group_sid, 
+			     size_t *num_gr_mem, char **gr_mem, size_t *gr_mem_len)
+{
+	DOM_SID *members;
+	size_t i, num_members;
+
+	*num_gr_mem = 0;
+	*gr_mem = NULL;
+	*gr_mem_len = 0;
+
+	if (!NT_STATUS_IS_OK(pdb_enum_aliasmem(group_sid, &members,
+					       &num_members)))
+		return True;
+
+	for (i=0; i<num_members; i++) {
+		add_expanded_sid(&members[i], gr_mem, num_gr_mem);
+	}
+
+	SAFE_FREE(members);
+
+	if (*gr_mem != NULL) {
+		size_t len;
+
+		/* We have at least one member, strip off the last "," */
+		len = strlen(*gr_mem);
+		(*gr_mem)[len-1] = '\0';
+		*gr_mem_len = len;
+	}
+
+	return True;
+}
 
 /* Fill a grent structure from various other information */