2 Unix SMB/CIFS implementation.
3 Password and authentication handling
4 Copyright (C) Jeremy Allison 1996-2002
5 Copyright (C) Andrew Tridgell 2002
6 Copyright (C) Gerald (Jerry) Carter 2000
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 /****************************************************************************
27 Read a SID from a file. This is for compatibility with the old MACHINE.SID
29 ****************************************************************************/
30 static BOOL read_sid_from_file(const char *fname, DOM_SID *sid)
36 lines = file_lines_load(fname, &numlines);
38 if (!lines || numlines < 1) {
39 if (lines) file_lines_free(lines);
43 ret = string_to_sid(sid, lines[0]);
44 file_lines_free(lines);
49 generate a random sid - used to build our own sid if we don't have one
51 static void generate_random_sid(DOM_SID *sid)
54 uchar raw_sid_data[12];
56 memset((char *)sid, '\0', sizeof(*sid));
60 sid->sub_auths[sid->num_auths++] = 21;
62 generate_random_buffer(raw_sid_data, 12, True);
63 for (i = 0; i < 3; i++)
64 sid->sub_auths[sid->num_auths++] = IVAL(raw_sid_data, i*4);
67 /****************************************************************************
68 Generate the global machine sid.
69 ****************************************************************************/
71 BOOL pdb_generate_sam_sid(void)
74 extern pstring global_myname;
75 extern fstring global_myworkgroup;
78 generate_wellknown_sids();
80 switch (lp_server_role()) {
90 if (secrets_fetch_domain_sid(global_myname, &global_sam_sid)) {
93 /* We got our sid. If not a pdc/bdc, we're done. */
97 if (!secrets_fetch_domain_sid(global_myworkgroup, &domain_sid)) {
99 /* No domain sid and we're a pdc/bdc. Store it */
101 if (!secrets_store_domain_sid(global_myworkgroup, &global_sam_sid)) {
102 DEBUG(0,("pdb_generate_sam_sid: Can't store domain SID as a pdc/bdc.\n"));
108 if (!sid_equal(&domain_sid, &global_sam_sid)) {
110 /* Domain name sid doesn't match global sam sid. Re-store global sam sid as domain sid. */
112 DEBUG(0,("pdb_generate_sam_sid: Mismatched SIDs as a pdc/bdc.\n"));
113 if (!secrets_store_domain_sid(global_myworkgroup, &global_sam_sid)) {
114 DEBUG(0,("pdb_generate_sam_sid: Can't re-store domain SID as a pdc/bdc.\n"));
124 /* check for an old MACHINE.SID file for backwards compatibility */
125 asprintf(&fname, "%s/MACHINE.SID", lp_private_dir());
127 if (read_sid_from_file(fname, &global_sam_sid)) {
128 /* remember it for future reference and unlink the old MACHINE.SID */
129 if (!secrets_store_domain_sid(global_myname, &global_sam_sid)) {
130 DEBUG(0,("pdb_generate_sam_sid: Failed to store SID from file.\n"));
136 if (!secrets_store_domain_sid(global_myworkgroup, &global_sam_sid)) {
137 DEBUG(0,("pdb_generate_sam_sid: Failed to store domain SID from file.\n"));
143 /* Stored the old sid from MACHINE.SID successfully.
144 Patch from Stefan "metze" Metzmacher <metze@metzemix.de>*/
151 /* we don't have the SID in secrets.tdb, we will need to
152 generate one and save it */
153 generate_random_sid(&global_sam_sid);
155 if (!secrets_store_domain_sid(global_myname, &global_sam_sid)) {
156 DEBUG(0,("pdb_generate_sam_sid: Failed to store generated machine SID.\n"));
160 if (!secrets_store_domain_sid(global_myworkgroup, &global_sam_sid)) {
161 DEBUG(0,("pdb_generate_sam_sid: Failed to store generated domain SID.\n"));