s3-passdb: move util_wellknown.c out of passdb.

Guenther

1 files changed, 173 insertions, 0 deletions

diff --git a/source3/lib/util_wellknown.c b/source3/lib/util_wellknown.c
new file mode 100644
index 0000000000..f2f99af2d0
--- /dev/null
+++ b/source3/lib/util_wellknown.c
@@ -0,0 +1,173 @@
+/*
+   Unix SMB/CIFS implementation.
+   Lookup routines for well-known SIDs
+   Copyright (C) Andrew Tridgell 1992-1998
+   Copyright (C) Luke Kenneth Caseson Leighton 1998-1999
+   Copyright (C) Jeremy Allison  1999
+   Copyright (C) Volker Lendecke 2005
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "../libcli/security/security.h"
+
+struct rid_name_map {
+	uint32 rid;
+	const char *name;
+};
+
+struct sid_name_map_info
+{
+	const struct dom_sid *sid;
+	const char *name;
+	const struct rid_name_map *known_users;
+};
+
+static const struct rid_name_map everyone_users[] = {
+	{ 0, "Everyone" },
+	{ 0, NULL}};
+
+static const struct rid_name_map creator_owner_users[] = {
+	{ 0, "Creator Owner" },
+	{ 1, "Creator Group" },
+	{ 0, NULL}};
+
+static const struct rid_name_map nt_authority_users[] = {
+	{  1, "Dialup" },
+	{  2, "Network"},
+	{  3, "Batch"},
+	{  4, "Interactive"},
+	{  6, "Service"},
+	{  7, "AnonymousLogon"},
+	{  7, "Anonymous Logon"},
+	{  8, "Proxy"},
+	{  9, "ServerLogon"},
+	{ 10, "Self"},
+	{ 11, "Authenticated Users"},
+	{ 12, "Restricted"},
+	{ 13, "Terminal Server User"},
+	{ 14, "Remote Interactive Logon"},
+	{ 15, "This Organization"},
+	{ 18, "SYSTEM"},
+	{ 19, "Local Service"},
+	{ 20, "Network Service"},
+	{  0,  NULL}};
+
+static struct sid_name_map_info special_domains[] = {
+	{ &global_sid_World_Domain, "", everyone_users },
+	{ &global_sid_Creator_Owner_Domain, "", creator_owner_users },
+	{ &global_sid_NT_Authority, "NT Authority", nt_authority_users },
+	{ NULL, NULL, NULL }};
+
+bool sid_check_is_wellknown_domain(const struct dom_sid *sid, const char **name)
+{
+	int i;
+
+	for (i=0; special_domains[i].sid != NULL; i++) {
+		if (dom_sid_equal(sid, special_domains[i].sid)) {
+			if (name != NULL) {
+				*name = special_domains[i].name;
+			}
+			return True;
+		}
+	}
+	return False;
+}
+
+bool sid_check_is_in_wellknown_domain(const struct dom_sid *sid)
+{
+	struct dom_sid dom_sid;
+
+	sid_copy(&dom_sid, sid);
+	sid_split_rid(&dom_sid, NULL);
+
+	return sid_check_is_wellknown_domain(&dom_sid, NULL);
+}
+
+/**************************************************************************
+ Looks up a known username from one of the known domains.
+***************************************************************************/
+
+bool lookup_wellknown_sid(TALLOC_CTX *mem_ctx, const struct dom_sid *sid,
+			  const char **domain, const char **name)
+{
+	int i;
+	struct dom_sid dom_sid;
+	uint32 rid;
+	const struct rid_name_map *users = NULL;
+
+	sid_copy(&dom_sid, sid);
+	if (!sid_split_rid(&dom_sid, &rid)) {
+		DEBUG(2, ("Could not split rid from SID\n"));
+		return False;
+	}
+
+	for (i=0; special_domains[i].sid != NULL; i++) {
+		if (dom_sid_equal(&dom_sid, special_domains[i].sid)) {
+			*domain = talloc_strdup(mem_ctx,
+						special_domains[i].name);
+			users = special_domains[i].known_users;
+			break;
+		}
+	}
+
+	if (users == NULL) {
+		DEBUG(10, ("SID %s is no special sid\n", sid_string_dbg(sid)));
+		return False;
+	}
+
+	for (i=0; users[i].name != NULL; i++) {
+		if (rid == users[i].rid) {
+			*name = talloc_strdup(mem_ctx, users[i].name);
+			return True;
+		}
+	}
+
+	DEBUG(10, ("RID of special SID %s not found\n", sid_string_dbg(sid)));
+
+	return False;
+}
+
+/**************************************************************************
+ Try and map a name to one of the well known SIDs.
+***************************************************************************/
+
+bool lookup_wellknown_name(TALLOC_CTX *mem_ctx, const char *name,
+			   struct dom_sid *sid, const char **domain)
+{
+	int i, j;
+
+	DEBUG(10,("map_name_to_wellknown_sid: looking up %s\n", name));
+
+	for (i=0; special_domains[i].sid != NULL; i++) {
+		const struct rid_name_map *users =
+			special_domains[i].known_users;
+
+		if (users == NULL)
+			continue;
+
+		for (j=0; users[j].name != NULL; j++) {
+			if ( strequal(users[j].name, name) ) {
+				sid_compose(sid, special_domains[i].sid,
+					    users[j].rid);
+				*domain = talloc_strdup(
+					mem_ctx, special_domains[i].name);
+				return True;
+			}
+		}
+	}
+
+	return False;
+}