2 Unix SMB/CIFS implementation.
3 Samba utility functions
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Luke Kenneth Caseson Leighton 1998-1999
6 Copyright (C) Jeremy Allison 1999
7 Copyright (C) Stefan (metze) Metzmacher 2002
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 extern pstring global_myname;
27 extern fstring global_myworkgroup;
33 DOM_SID global_sid_Builtin; /* Local well-known domain */
34 DOM_SID global_sid_World_Domain; /* Everyone domain */
35 DOM_SID global_sid_World; /* Everyone */
36 DOM_SID global_sid_Creator_Owner_Domain; /* Creator Owner domain */
37 DOM_SID global_sid_Creator_Owner; /* Creator Owner */
38 DOM_SID global_sid_Creator_Group; /* Creator Group */
39 DOM_SID global_sid_NT_Authority; /* NT Authority */
40 DOM_SID global_sid_NULL; /* NULL sid */
41 DOM_SID global_sid_Builtin_Guests; /* Builtin guest users */
42 DOM_SID global_sid_Authenticated_Users; /* All authenticated rids */
43 DOM_SID global_sid_Network; /* Network rids */
44 DOM_SID global_sid_Anonymous; /* Anonymous login */
46 const DOM_SID *global_sid_everyone = &global_sid_World;
49 * An NT compatible anonymous token.
52 static DOM_SID anon_sid_array[3];
54 NT_USER_TOKEN anonymous_token = {
59 /****************************************************************************
60 Creates some useful well known sids
61 ****************************************************************************/
63 void generate_wellknown_sids(void)
65 string_to_sid(&global_sid_Builtin, "S-1-5-32");
66 string_to_sid(&global_sid_Builtin_Guests, "S-1-5-32-546");
67 string_to_sid(&global_sid_World_Domain, "S-1-1");
68 string_to_sid(&global_sid_World, "S-1-1-0");
69 string_to_sid(&global_sid_Creator_Owner_Domain, "S-1-3");
70 string_to_sid(&global_sid_Creator_Owner, "S-1-3-0");
71 string_to_sid(&global_sid_Creator_Group, "S-1-3-1");
72 string_to_sid(&global_sid_NT_Authority, "S-1-5");
73 string_to_sid(&global_sid_NULL, "S-1-0-0");
74 string_to_sid(&global_sid_Authenticated_Users, "S-1-5-11");
75 string_to_sid(&global_sid_Network, "S-1-5-2");
76 string_to_sid(&global_sid_Anonymous, "S-1-5-7");
78 /* Create the anon token. */
79 sid_copy( &anonymous_token.user_sids[0], &global_sid_World);
80 sid_copy( &anonymous_token.user_sids[1], &global_sid_Network);
81 sid_copy( &anonymous_token.user_sids[2], &global_sid_Anonymous);
84 /**************************************************************************
85 Splits a name of format \DOMAIN\name or name into its two components.
86 Sets the DOMAIN name to global_myname if it has not been specified.
87 ***************************************************************************/
89 void split_domain_name(const char *fullname, char *domain, char *name)
94 sep = lp_winbind_separator();
96 *domain = *name = '\0';
98 if (fullname[0] == sep[0] || fullname[0] == '\\')
101 pstrcpy(full_name, fullname);
102 p = strchr_m(full_name+1, '\\');
103 if (!p) p = strchr_m(full_name+1, sep[0]);
107 fstrcpy(domain, full_name);
110 fstrcpy(domain, global_myname);
111 fstrcpy(name, full_name);
114 DEBUG(10,("split_domain_name:name '%s' split into domain :'%s' and user :'%s'\n",
115 fullname, domain, name));
118 /*****************************************************************
119 Convert a SID to an ascii string.
120 *****************************************************************/
122 char *sid_to_string(fstring sidstr_out, DOM_SID *sid)
129 fstrcpy(sidstr_out, "(NULL SID)");
133 /* BIG NOTE: this function only does SIDS where the identauth is not >= 2^32 */
134 ia = (sid->id_auth[5]) +
135 (sid->id_auth[4] << 8 ) +
136 (sid->id_auth[3] << 16) +
137 (sid->id_auth[2] << 24);
139 slprintf(sidstr_out, sizeof(fstring) - 1, "S-%u-%lu", (unsigned int)sid->sid_rev_num, (unsigned long)ia);
141 for (i = 0; i < sid->num_auths; i++) {
142 slprintf(subauth, sizeof(subauth)-1, "-%lu", (unsigned long)sid->sub_auths[i]);
143 fstrcat(sidstr_out, subauth);
150 useful function for debug lines
152 const char *sid_string_static(DOM_SID *sid)
154 static fstring sid_str;
155 sid_to_string(sid_str, sid);
159 /*****************************************************************
160 Convert a string to a SID. Returns True on success, False on fail.
161 *****************************************************************/
163 BOOL string_to_sid(DOM_SID *sidout, const char *sidstr)
167 /* BIG NOTE: this function only does SIDS where the identauth is not >= 2^32 */
170 if (StrnCaseCmp( sidstr, "S-", 2)) {
171 DEBUG(0,("string_to_sid: Sid %s does not start with 'S-'.\n", sidstr));
175 memset((char *)sidout, '\0', sizeof(DOM_SID));
177 q = p = strdup(sidstr + 2);
179 DEBUG(0, ("string_to_sid: out of memory!\n"));
183 if (!next_token(&p, tok, "-", sizeof(tok))) {
184 DEBUG(0,("string_to_sid: Sid %s is not in a valid format.\n", sidstr));
189 /* Get the revision number. */
190 sidout->sid_rev_num = (uint8)strtoul(tok, NULL, 10);
192 if (!next_token(&p, tok, "-", sizeof(tok))) {
193 DEBUG(0,("string_to_sid: Sid %s is not in a valid format.\n", sidstr));
198 /* identauth in decimal should be < 2^32 */
199 ia = (uint32)strtoul(tok, NULL, 10);
201 /* NOTE - the ia value is in big-endian format. */
202 sidout->id_auth[0] = 0;
203 sidout->id_auth[1] = 0;
204 sidout->id_auth[2] = (ia & 0xff000000) >> 24;
205 sidout->id_auth[3] = (ia & 0x00ff0000) >> 16;
206 sidout->id_auth[4] = (ia & 0x0000ff00) >> 8;
207 sidout->id_auth[5] = (ia & 0x000000ff);
209 sidout->num_auths = 0;
211 while(next_token(&p, tok, "-", sizeof(tok)) &&
212 sidout->num_auths < MAXSUBAUTHS) {
214 * NOTE - the subauths are in native machine-endian format. They
215 * are converted to little-endian when linearized onto the wire.
217 sid_append_rid(sidout, (uint32)strtoul(tok, NULL, 10));
224 /*****************************************************************
225 Add a rid to the end of a sid
226 *****************************************************************/
228 BOOL sid_append_rid(DOM_SID *sid, uint32 rid)
230 if (sid->num_auths < MAXSUBAUTHS) {
231 sid->sub_auths[sid->num_auths++] = rid;
237 /*****************************************************************
238 Removes the last rid from the end of a sid
239 *****************************************************************/
241 BOOL sid_split_rid(DOM_SID *sid, uint32 *rid)
243 if (sid->num_auths > 0) {
245 *rid = sid->sub_auths[sid->num_auths];
251 /*****************************************************************
252 Return the last rid from the end of a sid
253 *****************************************************************/
255 BOOL sid_peek_rid(const DOM_SID *sid, uint32 *rid)
260 if (sid->num_auths > 0) {
261 *rid = sid->sub_auths[sid->num_auths - 1];
267 /*****************************************************************
268 Return the last rid from the end of a sid
269 and check the sid against the exp_dom_sid
270 *****************************************************************/
272 BOOL sid_peek_check_rid(const DOM_SID *exp_dom_sid, const DOM_SID *sid, uint32 *rid)
274 if (!exp_dom_sid || !sid || !rid)
278 if (sid_compare_domain(exp_dom_sid, sid)!=0){
283 return sid_peek_rid(sid, rid);
286 /*****************************************************************
288 *****************************************************************/
290 void sid_copy(DOM_SID *dst, const DOM_SID *src)
294 memset((char *)dst, '\0', sizeof(DOM_SID));
296 dst->sid_rev_num = src->sid_rev_num;
297 dst->num_auths = src->num_auths;
299 memcpy(&dst->id_auth[0], &src->id_auth[0], sizeof(src->id_auth));
301 for (i = 0; i < src->num_auths; i++)
302 dst->sub_auths[i] = src->sub_auths[i];
305 /*****************************************************************
306 Duplicates a sid - mallocs the target.
307 *****************************************************************/
309 DOM_SID *sid_dup(DOM_SID *src)
316 if((dst = malloc(sizeof(DOM_SID))) != NULL) {
317 memset(dst, '\0', sizeof(DOM_SID));
324 /*****************************************************************
325 Write a sid out into on-the-wire format.
326 *****************************************************************/
327 BOOL sid_linearize(char *outbuf, size_t len, DOM_SID *sid)
331 if (len < sid_size(sid))
334 SCVAL(outbuf,0,sid->sid_rev_num);
335 SCVAL(outbuf,1,sid->num_auths);
336 memcpy(&outbuf[2], sid->id_auth, 6);
337 for(i = 0; i < sid->num_auths; i++)
338 SIVAL(outbuf, 8 + (i*4), sid->sub_auths[i]);
343 /*****************************************************************
344 parse a on-the-wire SID to a DOM_SID
345 *****************************************************************/
346 BOOL sid_parse(char *inbuf, size_t len, DOM_SID *sid)
349 if (len < 8) return False;
350 sid->sid_rev_num = CVAL(inbuf, 0);
351 sid->num_auths = CVAL(inbuf, 1);
352 memcpy(sid->id_auth, inbuf+2, 6);
353 if (len < 8 + sid->num_auths*4) return False;
354 for (i=0;i<sid->num_auths;i++) {
355 sid->sub_auths[i] = IVAL(inbuf, 8+i*4);
361 /*****************************************************************
362 Compare the auth portion of two sids.
363 *****************************************************************/
364 int sid_compare_auth(const DOM_SID *sid1, const DOM_SID *sid2)
368 if (sid1 == sid2) return 0;
369 if (!sid1) return -1;
372 if (sid1->sid_rev_num != sid2->sid_rev_num)
373 return sid1->sid_rev_num - sid2->sid_rev_num;
375 for (i = 0; i < 6; i++)
376 if (sid1->id_auth[i] != sid2->id_auth[i])
377 return sid1->id_auth[i] - sid2->id_auth[i];
382 /*****************************************************************
384 *****************************************************************/
385 int sid_compare(const DOM_SID *sid1, const DOM_SID *sid2)
389 if (sid1 == sid2) return 0;
390 if (!sid1) return -1;
393 /* compare most likely different rids, first: i.e start at end */
394 if (sid1->num_auths != sid2->num_auths)
395 return sid1->num_auths - sid2->num_auths;
397 for (i = sid1->num_auths-1; i >= 0; --i)
398 if (sid1->sub_auths[i] != sid2->sub_auths[i])
399 return sid1->sub_auths[i] - sid2->sub_auths[i];
401 return sid_compare_auth(sid1, sid2);
404 /*****************************************************************
405 see if 2 SIDs are in the same domain
406 this just compares the leading sub-auths
407 *****************************************************************/
408 int sid_compare_domain(const DOM_SID *sid1, const DOM_SID *sid2)
412 n = MIN(sid1->num_auths, sid2->num_auths);
414 for (i = n-1; i >= 0; --i)
415 if (sid1->sub_auths[i] != sid2->sub_auths[i])
416 return sid1->sub_auths[i] - sid2->sub_auths[i];
418 return sid_compare_auth(sid1, sid2);
421 /*****************************************************************
423 *****************************************************************/
424 BOOL sid_equal(const DOM_SID *sid1, const DOM_SID *sid2)
426 return sid_compare(sid1, sid2) == 0;
431 /*****************************************************************
432 Check if the SID is the builtin SID (S-1-5-32).
433 *****************************************************************/
434 BOOL sid_check_is_builtin(const DOM_SID *sid)
436 return sid_equal(sid, &global_sid_Builtin);
440 /*****************************************************************
441 Check if the SID is our domain SID (S-1-5-21-x-y-z).
442 *****************************************************************/
443 BOOL sid_check_is_in_builtin(const DOM_SID *sid)
448 sid_copy(&dom_sid, sid);
449 sid_split_rid(&dom_sid, &rid);
451 return sid_equal(&dom_sid, &global_sid_Builtin);
455 /*****************************************************************
456 Calculates size of a sid.
457 *****************************************************************/
459 size_t sid_size(DOM_SID *sid)
464 return sid->num_auths * sizeof(uint32) + 8;
467 /*****************************************************************
468 Returns true if SID is internal (and non-mappable).
469 *****************************************************************/
471 BOOL non_mappable_sid(DOM_SID *sid)
477 sid_split_rid(&dom, &rid);
479 if (sid_equal(&dom, &global_sid_Builtin))
482 if (sid_equal(&dom, &global_sid_Creator_Owner_Domain))
485 if (sid_equal(&dom, &global_sid_NT_Authority))
492 return the binary string representation of a DOM_SID
495 char *sid_binstring(DOM_SID *sid)
498 int len = sid_size(sid);
500 if (!buf) return NULL;
501 sid_linearize(buf, len, sid);
502 s = binary_string(buf, len);