2 Unix SMB/Netbios implementation.
4 Samba utility functions
5 Copyright (C) Andrew Tridgell 1992-1998
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 extern int DEBUGLEVEL;
27 extern pstring global_myname;
30 * This is set on startup - it defines the SID for this
31 * machine, and therefore the SAM database for which it is
35 DOM_SID global_sam_sid;
38 * This is the name associated with the SAM database for
39 * which this machine is responsible. In the case of a PDC
40 * or PDC, this name is the same as the workgroup. In the
41 * case of "security = domain" mode, this is the same as
42 * the name of the server (global_myname).
45 fstring global_sam_name;
48 * This is obtained on startup - it defines the SID for which
49 * this machine is a member. It is therefore only set, and
50 * used, in "security = domain" mode.
53 DOM_SID global_member_sid;
56 * note the lack of a "global_member_name" - this is because
57 * this is the same as "global_myworkgroup".
64 DOM_SID global_sid_S_1_5_20; /* local well-known domain */
65 DOM_SID global_sid_S_1_1; /* everyone */
66 DOM_SID global_sid_S_1_3; /* */
67 DOM_SID global_sid_S_1_5; /* NT Authority */
69 extern pstring global_myworkgroup;
70 /* extern fstring global_member_dom_name; */
72 static struct sid_name_map_info
80 { &global_sid_S_1_5_20, "BUILTIN" },
81 { &global_sid_S_1_1 , "Everyone" },
82 { &global_sid_S_1_3 , "don't know" },
83 { &global_sid_S_1_5 , "NT Authority" },
84 { &global_sam_sid , global_sam_name },
85 { &global_member_sid , global_myworkgroup },
89 /****************************************************************************
90 Read the machine SID from a file.
91 ****************************************************************************/
93 static BOOL read_sid_from_file(int fd, char *sid_file)
97 memset(fline, '\0', sizeof(fline));
99 if (read(fd, fline, sizeof(fline) -1 ) < 0) {
100 DEBUG(0,("unable to read file %s. Error was %s\n",
101 sid_file, strerror(errno) ));
106 * Convert to the machine SID.
109 fline[sizeof(fline)-1] = '\0';
110 if (!string_to_sid( &global_sam_sid, fline)) {
111 DEBUG(0,("unable to generate machine SID.\n"));
118 /****************************************************************************
119 Generate the global machine sid. Look for the MACHINE.SID file first, if
120 not found then look in smb.conf and use it to create the MACHINE.SID file.
121 ****************************************************************************/
122 BOOL get_member_domain_sid(void)
126 struct cli_state cli;
133 if (!cli_connect_serverlist(&cli, lp_passwordserver()))
135 DEBUG(0,("get_member_domain_sid: unable to initialize client connection.\n"));
140 * Ok - we have an anonymous connection to the IPC$ share.
141 * Now start the NT Domain stuff :-).
149 fstrcpy(srv_name, "\\\\");
150 fstrcat(srv_name, global_myname);
153 /* open LSARPC session. */
154 res = res ? cli_nt_session_open(&cli, PIPE_LSARPC) : False;
156 /* lookup domain controller; receive a policy handle */
157 res = res ? do_lsa_open_policy(&cli, srv_name, &pol, False) : False;
159 /* send client info query, level 3. receive domain name and sid */
160 res = res ? do_lsa_query_info_pol(&cli, &pol, 3, dom3, &sid3) : False;
162 /* send client info query, level 5. receive domain name and sid */
163 res = res ? do_lsa_query_info_pol(&cli, &pol, 5, dom5, &sid5) : False;
165 /* close policy handle */
166 res = res ? do_lsa_close(&cli, &pol) : False;
168 /* close the session */
169 cli_nt_session_close(&cli);
176 DEBUG(5,("LSA Query Info Policy\n"));
177 sid_to_string(sid, &sid3);
178 DEBUG(5,("Domain Member - Domain: %s SID: %s\n", dom3, sid));
179 sid_to_string(sid, &sid5);
180 DEBUG(5,("Domain Controller - Domain: %s SID: %s\n", dom5, sid));
182 if (!strequal(dom3, global_myworkgroup) ||
183 !strequal(dom5, global_myworkgroup))
185 DEBUG(0,("get_member_domain_sid: %s is a DC for %s not %s\n",
186 cli.desthost, dom5, global_myworkgroup));
192 DEBUG(5,("lsa query info failed\n"));
196 DEBUG(0,("get_member_domain_sid: unable to obtain Domain member SID\n"));
200 /* this is a _lot_ of trouble to go to for just this info: */
201 global_member_sid = sid5;
207 /****************************************************************************
208 creates some useful well known sids
209 ****************************************************************************/
210 void generate_wellknown_sids(void)
212 string_to_sid(&global_sid_S_1_5_20, "S-1-5-32");
213 string_to_sid(&global_sid_S_1_1 , "S-1-1" );
214 string_to_sid(&global_sid_S_1_3 , "S-1-3" );
215 string_to_sid(&global_sid_S_1_5 , "S-1-5" );
218 /****************************************************************************
219 Generate the global machine sid. Look for the MACHINE.SID file first, if
220 not found then look in smb.conf and use it to create the MACHINE.SID file.
221 ****************************************************************************/
222 BOOL generate_sam_sid(void)
230 uchar raw_sid_data[12];
232 pstrcpy(sid_file, lp_smb_passwd_file());
233 p = strrchr(sid_file, '/');
238 if (!directory_exist(sid_file, NULL)) {
239 if (dos_mkdir(sid_file, 0700) != 0) {
240 DEBUG(0,("can't create private directory %s : %s\n",
241 sid_file, strerror(errno)));
246 pstrcat(sid_file, "MACHINE.SID");
248 if ((fd = open(sid_file, O_RDWR | O_CREAT, 0644)) == -1) {
249 DEBUG(0,("unable to open or create file %s. Error was %s\n",
250 sid_file, strerror(errno) ));
255 * Check if the file contains data.
258 if (sys_fstat( fd, &st) < 0) {
259 DEBUG(0,("unable to stat file %s. Error was %s\n",
260 sid_file, strerror(errno) ));
265 if (st.st_size > 0) {
267 * We have a valid SID - read it.
269 if (!read_sid_from_file( fd, sid_file)) {
270 DEBUG(0,("unable to read file %s. Error was %s\n",
271 sid_file, strerror(errno) ));
280 * Generate the new sid data & turn it into a string.
282 generate_random_buffer( raw_sid_data, 12, True);
284 fstrcpy( sid_string, "S-1-5-21");
285 for( i = 0; i < 3; i++) {
287 slprintf( tmp_string, sizeof(tmp_string) - 1, "-%u", IVAL(raw_sid_data, i*4));
288 fstrcat( sid_string, tmp_string);
291 fstrcat(sid_string, "\n");
294 * Ensure our new SID is valid.
297 if (!string_to_sid( &global_sam_sid, sid_string)) {
298 DEBUG(0,("unable to generate machine SID.\n"));
303 * Do an exclusive blocking lock on the file.
306 if (!do_file_lock( fd, 60, F_WRLCK)) {
307 DEBUG(0,("unable to lock file %s. Error was %s\n",
308 sid_file, strerror(errno) ));
314 * At this point we have a blocking lock on the SID
315 * file - check if in the meantime someone else wrote
316 * SID data into the file. If so - they were here first,
320 if (sys_fstat( fd, &st) < 0) {
321 DEBUG(0,("unable to stat file %s. Error was %s\n",
322 sid_file, strerror(errno) ));
327 if (st.st_size > 0) {
329 * Unlock as soon as possible to reduce
330 * contention on the exclusive lock.
332 do_file_lock( fd, 60, F_UNLCK);
335 * We have a valid SID - read it.
338 if (!read_sid_from_file( fd, sid_file)) {
339 DEBUG(0,("unable to read file %s. Error was %s\n",
340 sid_file, strerror(errno) ));
349 * The file is still empty and we have an exlusive lock on it.
350 * Write out out SID data into the file.
353 if (fchmod(fd, 0644) < 0) {
354 DEBUG(0,("unable to set correct permissions on file %s. \
355 Error was %s\n", sid_file, strerror(errno) ));
360 if (write( fd, sid_string, strlen(sid_string)) != strlen(sid_string)) {
361 DEBUG(0,("unable to write file %s. Error was %s\n",
362 sid_file, strerror(errno) ));
371 do_file_lock( fd, 60, F_UNLCK);
376 /**************************************************************************
377 turns a domain name into a SID.
379 *** side-effect: if the domain name is NULL, it is set to our domain ***
381 ***************************************************************************/
382 BOOL map_domain_name_to_sid(DOM_SID *sid, char **nt_domain)
385 sid_to_string(sid_str, sid);
386 DEBUG(5,("map_domain_name_to_sid: %s\n", sid_str));
388 if (nt_domain == NULL)
390 *sid = global_sam_sid;
394 if ((*nt_domain) == NULL)
396 DEBUG(5,("map_domain_name_to_sid: overriding NULL name to %s\n",
398 (*nt_domain) = strdup(global_sam_name);
399 *sid = global_sam_sid;
403 if (strequal((*nt_domain), global_sam_name))
405 *sid = global_sam_sid;
409 DEBUG(0,("map_domain_name_to_sid: mapping to %s NOT IMPLEMENTED\n",
414 /**************************************************************************
415 turns a domain SID into a name.
417 ***************************************************************************/
418 BOOL map_domain_sid_to_name(DOM_SID *sid, char *nt_domain)
422 sid_to_string(sid_str, sid);
424 DEBUG(5,("map_domain_sid_to_name: %s\n", sid_str));
426 if (nt_domain == NULL)
431 while (sid_name_map[i].sid != NULL)
433 sid_to_string(sid_str, sid_name_map[i].sid);
434 DEBUG(5,("compare: %s\n", sid_str));
435 if (sid_equal(sid_name_map[i].sid, sid))
437 fstrcpy(nt_domain, sid_name_map[i].name);
438 DEBUG(5,("found %s\n", nt_domain));
444 DEBUG(0,("map_domain_sid_to_name: mapping NOT IMPLEMENTED\n"));
449 /**************************************************************************
450 splits a name of format \DOMAIN\name into its two components.
451 sets the DOMAIN name to global_sam_name if it has not been specified.
452 ***************************************************************************/
453 BOOL split_domain_name(char *fullname, char *domain, char *name)
458 if (fullname == NULL || domain == NULL || name == NULL)
463 if (fullname[0] == '\\')
467 fstrcpy(full_name, fullname);
468 p = strchr(full_name+1, '\\');
473 fstrcpy(domain, full_name);
478 fstrcpy(domain, global_sam_name);
479 fstrcpy(name, full_name);
482 DEBUG(5,("name '%s' split into '\\%s\\%s'\n", fullname, domain, name));