summaryrefslogtreecommitdiff
path: root/source3/lib/util_sid.c
blob: 98d4e77712047e8c0b199dd14a9ca556c52d3226 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
/* 
   Unix SMB/Netbios implementation.
   Version 1.9.
   Samba utility functions
   Copyright (C) Andrew Tridgell 1992-1998
   Copyright (C) Luke Kenneth Caseson Leighton 1998-1999
   Copyright (C) Jeremy Allison  1999
   
   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 2 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, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include "includes.h"


extern int DEBUGLEVEL;
DOM_SID global_sam_sid;
extern pstring global_myname;
extern fstring global_myworkgroup;

/*
 * Some useful sids
 */

DOM_SID global_sid_Builtin; 				/* Local well-known domain */
DOM_SID global_sid_World_Domain;	    	/* Everyone domain */
DOM_SID global_sid_World;    				/* Everyone */
DOM_SID global_sid_Creator_Owner_Domain;    /* Creator Owner domain */
DOM_SID global_sid_Creator_Owner;    		/* Creator Owner */
DOM_SID global_sid_NT_Authority;    		/* NT Authority */
DOM_SID global_sid_NULL;            		/* NULL sid */
DOM_SID global_sid_Builtin_Guests;			/* Builtin guest users */
DOM_SID global_sid_Authenticated_Users;		/* All authenticated rids */
DOM_SID global_sid_Network;					/* Network rids */
DOM_SID global_sid_Anonymous;				/* Anonymous login */

const DOM_SID *global_sid_everyone = &global_sid_World;

typedef struct _known_sid_users {
	uint32 rid;
	enum SID_NAME_USE sid_name_use;
	char *known_user_name;
} known_sid_users;

/* static known_sid_users no_users[] = {{0, 0, NULL}}; */

static known_sid_users everyone_users[] = {
	{ 0, SID_NAME_WKN_GRP, "Everyone" },
	{0, (enum SID_NAME_USE)0, NULL}};

static known_sid_users creator_owner_users[] = {
	{ 0, SID_NAME_ALIAS, "Creator Owner" },
	{0, (enum SID_NAME_USE)0, NULL}};

static known_sid_users nt_authority_users[] = {
	{  1, SID_NAME_ALIAS, "Dialup" },
	{  2, SID_NAME_ALIAS, "Network"},
	{  3, SID_NAME_ALIAS, "Batch"},
	{  4, SID_NAME_ALIAS, "Interactive"},
	{  6, SID_NAME_ALIAS, "Service"},
	{  7, SID_NAME_ALIAS, "AnonymousLogon"},
	{  8, SID_NAME_ALIAS, "Proxy"},
	{  9, SID_NAME_ALIAS, "ServerLogon"},
	{ 11, SID_NAME_ALIAS, "Authenticated Users"},
	{ 18, SID_NAME_ALIAS, "SYSTEM"},
	{  0, (enum SID_NAME_USE)0, NULL}};

static known_sid_users builtin_groups[] = {
	{ BUILTIN_ALIAS_RID_ADMINS, SID_NAME_ALIAS, "Administrators" },
	{ BUILTIN_ALIAS_RID_USERS, SID_NAME_ALIAS, "Users" },
	{ BUILTIN_ALIAS_RID_GUESTS, SID_NAME_ALIAS, "Guests" },
	{ BUILTIN_ALIAS_RID_ACCOUNT_OPS, SID_NAME_ALIAS, "Account Operators" },
	{ BUILTIN_ALIAS_RID_SYSTEM_OPS, SID_NAME_ALIAS, "Server Operators" },
	{ BUILTIN_ALIAS_RID_PRINT_OPS, SID_NAME_ALIAS, "Print Operators" },
	{ BUILTIN_ALIAS_RID_BACKUP_OPS, SID_NAME_ALIAS, "Backup Operators" },
	{  0, (enum SID_NAME_USE)0, NULL}};

static struct sid_name_map_info
{
	DOM_SID *sid;
	char *name;
	known_sid_users *known_users;
}
sid_name_map[] =
{
	{ &global_sam_sid, global_myname, NULL},
	{ &global_sam_sid, global_myworkgroup, NULL},
	{ &global_sid_Builtin, "BUILTIN", &builtin_groups[0]},
	{ &global_sid_World_Domain, "", &everyone_users[0] },
	{ &global_sid_Creator_Owner_Domain, "", &creator_owner_users[0] },
	{ &global_sid_NT_Authority, "NT Authority", &nt_authority_users[0] },
	{ NULL, NULL, NULL}
};

/*
 * An NT compatible anonymous token.
 */

static DOM_SID anon_sid_array[3];

NT_USER_TOKEN anonymous_token = {
    3,
    anon_sid_array
};

/****************************************************************************
 Creates some useful well known sids
****************************************************************************/

void generate_wellknown_sids(void)
{
	string_to_sid(&global_sid_Builtin, "S-1-5-32");
	string_to_sid(&global_sid_Builtin_Guests, "S-1-5-32-546");
	string_to_sid(&global_sid_World_Domain, "S-1-1");
	string_to_sid(&global_sid_World, "S-1-1-0");
	string_to_sid(&global_sid_Creator_Owner_Domain, "S-1-3");
	string_to_sid(&global_sid_Creator_Owner, "S-1-3-0");
	string_to_sid(&global_sid_NT_Authority, "S-1-5");
	string_to_sid(&global_sid_NULL, "S-1-0-0");
	string_to_sid(&global_sid_Authenticated_Users, "S-1-5-11");
	string_to_sid(&global_sid_Network, "S-1-5-2");
	string_to_sid(&global_sid_Anonymous, "S-1-5-7");

	/* Create the anon token. */
	sid_copy( &anonymous_token.user_sids[0], &global_sid_World);
	sid_copy( &anonymous_token.user_sids[1], &global_sid_Network);
	sid_copy( &anonymous_token.user_sids[2], &global_sid_Anonymous);
}

/**************************************************************************
 Turns a domain SID into a name, returned in the nt_domain argument.
***************************************************************************/

BOOL map_domain_sid_to_name(DOM_SID *sid, char *nt_domain)
{
	fstring sid_str;
	int i = 0;
	sid_to_string(sid_str, sid);

	DEBUG(5,("map_domain_sid_to_name: %s\n", sid_str));

	if (nt_domain == NULL)
		return False;

	while (sid_name_map[i].sid != NULL) {
		sid_to_string(sid_str, sid_name_map[i].sid);
		DEBUG(5,("map_domain_sid_to_name: compare: %s\n", sid_str));
		if (sid_equal(sid_name_map[i].sid, sid)) {
			fstrcpy(nt_domain, sid_name_map[i].name);
			DEBUG(5,("map_domain_sid_to_name: found '%s'\n", nt_domain));
			return True;
		}
		i++;
	}

	DEBUG(5,("map_domain_sid_to_name: mapping for %s not found\n", sid_str));

    return False;
}

/**************************************************************************
 Looks up a known username from one of the known domains.
***************************************************************************/

BOOL lookup_known_rid(DOM_SID *sid, uint32 rid, char *name, enum SID_NAME_USE *psid_name_use)
{
	int i = 0;
	struct sid_name_map_info *psnm;

	for(i = 0; sid_name_map[i].sid != NULL; i++) {
		psnm = &sid_name_map[i];
		if(sid_equal(psnm->sid, sid)) {
			int j;
			for(j = 0; psnm->known_users && psnm->known_users[j].known_user_name != NULL; j++) {
				if(rid == psnm->known_users[j].rid) {
					DEBUG(5,("lookup_builtin_rid: rid = %u, domain = '%s', user = '%s'\n",
						(unsigned int)rid, psnm->name, psnm->known_users[j].known_user_name ));
					fstrcpy( name, psnm->known_users[j].known_user_name);
					*psid_name_use = psnm->known_users[j].sid_name_use;
					return True;
				}
			}
		}
	}

	return False;
}

/**************************************************************************
 Turns a domain name into a SID.
 *** side-effect: if the domain name is NULL, it is set to our domain ***
***************************************************************************/

BOOL map_domain_name_to_sid(DOM_SID *sid, char *nt_domain)
{
	int i = 0;

	if (nt_domain == NULL) {
		DEBUG(5,("map_domain_name_to_sid: mapping NULL domain to our SID.\n"));
		sid_copy(sid, &global_sam_sid);
		return True;
	}

	if (nt_domain[0] == 0) {
		fstrcpy(nt_domain, global_myname);
		DEBUG(5,("map_domain_name_to_sid: overriding blank name to %s\n", nt_domain));
		sid_copy(sid, &global_sam_sid);
		return True;
    }

	DEBUG(5,("map_domain_name_to_sid: %s\n", nt_domain));

	while (sid_name_map[i].name != NULL) {
		DEBUG(5,("map_domain_name_to_sid: compare: %s\n", sid_name_map[i].name));
		if (strequal(sid_name_map[i].name, nt_domain)) {
			fstring sid_str;
			sid_copy(sid, sid_name_map[i].sid);
			sid_to_string(sid_str, sid_name_map[i].sid);
			DEBUG(5,("map_domain_name_to_sid: found %s\n", sid_str));
			return True;
		}
		i++;
	}

	DEBUG(0,("map_domain_name_to_sid: mapping to %s not found.\n", nt_domain));
	return False;
}

/**************************************************************************
 Splits a name of format \DOMAIN\name or name into its two components.
 Sets the DOMAIN name to global_myname if it has not been specified.
***************************************************************************/

void split_domain_name(const char *fullname, char *domain, char *name)
{
	pstring full_name;
	char *p, *sep;

	sep = lp_winbind_separator();

	*domain = *name = '\0';

	if (fullname[0] == sep[0] || fullname[0] == '\\')
		fullname++;

	pstrcpy(full_name, fullname);
	p = strchr(full_name+1, '\\');
	if (!p) p = strchr(full_name+1, sep[0]);

	if (p != NULL) {
		*p = 0;
		fstrcpy(domain, full_name);
		fstrcpy(name, p+1);
	} else {
		fstrcpy(domain, global_myname);
		fstrcpy(name, full_name);
	}

	DEBUG(10,("split_domain_name:name '%s' split into domain :'%s' and user :'%s'\n",
			fullname, domain, name));
}

/*****************************************************************
 Convert a SID to an ascii string.
*****************************************************************/

char *sid_to_string(fstring sidstr_out, DOM_SID *sid)
{
  char subauth[16];
  int i;
  /* BIG NOTE: this function only does SIDS where the identauth is not >= 2^32 */
  uint32 ia = (sid->id_auth[5]) +
              (sid->id_auth[4] << 8 ) +
              (sid->id_auth[3] << 16) +
              (sid->id_auth[2] << 24);

  slprintf(sidstr_out, sizeof(fstring) - 1, "S-%u-%lu", (unsigned int)sid->sid_rev_num, (unsigned long)ia);

  for (i = 0; i < sid->num_auths; i++) {
    slprintf(subauth, sizeof(subauth)-1, "-%lu", (unsigned long)sid->sub_auths[i]);
    fstrcat(sidstr_out, subauth);
  }

  return sidstr_out;
}

/*****************************************************************
 Convert a string to a SID. Returns True on success, False on fail.
*****************************************************************/  
   
BOOL string_to_sid(DOM_SID *sidout, char *sidstr)
{
  pstring tok;
  char *p = sidstr;
  /* BIG NOTE: this function only does SIDS where the identauth is not >= 2^32 */
  uint32 ia;

  memset((char *)sidout, '\0', sizeof(DOM_SID));

  if (StrnCaseCmp( sidstr, "S-", 2)) {
    DEBUG(0,("string_to_sid: Sid %s does not start with 'S-'.\n", sidstr));
    return False;
  }

  p += 2;
  if (!next_token(&p, tok, "-", sizeof(tok))) {
    DEBUG(0,("string_to_sid: Sid %s is not in a valid format.\n", sidstr));
    return False;
  }

  /* Get the revision number. */
  sidout->sid_rev_num = (uint8)strtoul(tok, NULL, 10);

  if (!next_token(&p, tok, "-", sizeof(tok))) {
    DEBUG(0,("string_to_sid: Sid %s is not in a valid format.\n", sidstr));
    return False;
  }

  /* identauth in decimal should be <  2^32 */
  ia = (uint32)strtoul(tok, NULL, 10);

  /* NOTE - the ia value is in big-endian format. */
  sidout->id_auth[0] = 0;
  sidout->id_auth[1] = 0;
  sidout->id_auth[2] = (ia & 0xff000000) >> 24;
  sidout->id_auth[3] = (ia & 0x00ff0000) >> 16;
  sidout->id_auth[4] = (ia & 0x0000ff00) >> 8;
  sidout->id_auth[5] = (ia & 0x000000ff);

  sidout->num_auths = 0;

  while(next_token(&p, tok, "-", sizeof(tok)) && 
	sidout->num_auths < MAXSUBAUTHS) {
    /* 
     * NOTE - the subauths are in native machine-endian format. They
     * are converted to little-endian when linearized onto the wire.
     */
	sid_append_rid(sidout, (uint32)strtoul(tok, NULL, 10));
  }

  DEBUG(7,("string_to_sid: converted SID %s ok\n", sidstr));

  return True;
}

/*****************************************************************
 Add a rid to the end of a sid
*****************************************************************/  

BOOL sid_append_rid(DOM_SID *sid, uint32 rid)
{
	if (sid->num_auths < MAXSUBAUTHS) {
		sid->sub_auths[sid->num_auths++] = rid;
		return True;
	}
	return False;
}

/*****************************************************************
 Removes the last rid from the end of a sid
*****************************************************************/  

BOOL sid_split_rid(DOM_SID *sid, uint32 *rid)
{
	if (sid->num_auths > 0) {
		sid->num_auths--;
		*rid = sid->sub_auths[sid->num_auths];
		return True;
	}
	return False;
}

/*****************************************************************
 Copies a sid
*****************************************************************/  

void sid_copy(DOM_SID *dst, const DOM_SID *src)
{
	int i;

	memset((char *)dst, '\0', sizeof(DOM_SID));

	dst->sid_rev_num = src->sid_rev_num;
	dst->num_auths = src->num_auths;

	memcpy(&dst->id_auth[0], &src->id_auth[0], sizeof(src->id_auth));

	for (i = 0; i < src->num_auths; i++)
		dst->sub_auths[i] = src->sub_auths[i];
}

/*****************************************************************
 Duplicates a sid - mallocs the target.
*****************************************************************/

DOM_SID *sid_dup(DOM_SID *src)
{
  DOM_SID *dst;

  if(!src)
    return NULL;

  if((dst = malloc(sizeof(DOM_SID))) != NULL) {
	memset(dst, '\0', sizeof(DOM_SID));
	sid_copy( dst, src);
  }

  return dst;
}

/*****************************************************************
 Write a sid out into on-the-wire format.
*****************************************************************/  

BOOL sid_linearize(char *outbuf, size_t len, DOM_SID *sid)
{
	size_t i;

	if(len < sid_size(sid))
		return False;

	SCVAL(outbuf,0,sid->sid_rev_num);
	SCVAL(outbuf,1,sid->num_auths);
	memcpy(&outbuf[2], sid->id_auth, 6);
	for(i = 0; i < sid->num_auths; i++)
		SIVAL(outbuf, 8 + (i*4), sid->sub_auths[i]);

	return True;
}

/*****************************************************************
 Compare two sids.
*****************************************************************/  

BOOL sid_equal(const DOM_SID *sid1, const DOM_SID *sid2)
{
	int i;

	if (sid1 == sid2) return True;
	if (!sid1 || !sid2) return False;

	/* compare most likely different rids, first: i.e start at end */
	for (i = sid1->num_auths-1; i >= 0; --i)
		if (sid1->sub_auths[i] != sid2->sub_auths[i])
			return False;

	if (sid1->num_auths != sid2->num_auths)
		return False;
	if (sid1->sid_rev_num != sid2->sid_rev_num)
		return False;

	for (i = 0; i < 6; i++)
		if (sid1->id_auth[i] != sid2->id_auth[i])
			return False;

	return True;
}


/*****************************************************************
 Calculates size of a sid.
*****************************************************************/  

size_t sid_size(DOM_SID *sid)
{
	if (sid == NULL)
		return 0;

	return sid->num_auths * sizeof(uint32) + 8;
}