source: trunk/server/libcli/security/util_sid.c@ 745

Last change on this file since 745 was 745, checked in by Silvan Scherrer, 13 years ago

Samba Server: updated trunk to 3.6.0
File size: 12.4 KB
Line 
1/*
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
8 Copyright (C) Simo Sorce 2002
9 Copyright (C) Jim McDonough <[email protected]> 2005
10 Copyright (C) Andrew Bartlett 2010
11
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 3 of the License, or
15 (at your option) any later version.
16
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
21
22 You should have received a copy of the GNU General Public License
23 along with this program. If not, see <http://www.gnu.org/licenses/>.
24*/
25
26#include "includes.h"
27#include "../librpc/gen_ndr/ndr_security.h"
28#include "../librpc/gen_ndr/netlogon.h"
29#include "../libcli/security/security.h"
30
31/*
32 * Some useful sids, more well known sids can be found at
33 * http://support.microsoft.com/kb/243330/EN-US/
34 */
35
36
37const struct dom_sid global_sid_World_Domain = /* Everyone domain */
38{ 1, 0, {0,0,0,0,0,1}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
39const struct dom_sid global_sid_World = /* Everyone */
40{ 1, 1, {0,0,0,0,0,1}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
41const struct dom_sid global_sid_Creator_Owner_Domain = /* Creator Owner domain */
42{ 1, 0, {0,0,0,0,0,3}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
43const struct dom_sid global_sid_NT_Authority = /* NT Authority */
44{ 1, 0, {0,0,0,0,0,5}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
45const struct dom_sid global_sid_System = /* System */
46{ 1, 1, {0,0,0,0,0,5}, {18,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
47const struct dom_sid global_sid_NULL = /* NULL sid */
48{ 1, 1, {0,0,0,0,0,0}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
49const struct dom_sid global_sid_Authenticated_Users = /* All authenticated rids */
50{ 1, 1, {0,0,0,0,0,5}, {11,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
51#if 0
52/* for documentation */
53const struct dom_sid global_sid_Restriced = /* Restriced Code */
54{ 1, 1, {0,0,0,0,0,5}, {12,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
55#endif
56const struct dom_sid global_sid_Network = /* Network rids */
57{ 1, 1, {0,0,0,0,0,5}, {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
58
59const struct dom_sid global_sid_Creator_Owner = /* Creator Owner */
60{ 1, 1, {0,0,0,0,0,3}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
61const struct dom_sid global_sid_Creator_Group = /* Creator Group */
62{ 1, 1, {0,0,0,0,0,3}, {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
63const struct dom_sid global_sid_Anonymous = /* Anonymous login */
64{ 1, 1, {0,0,0,0,0,5}, {7,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
65const struct dom_sid global_sid_Enterprise_DCs = /* Enterprise DCs */
66{ 1, 1, {0,0,0,0,0,5}, {9,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
67const struct dom_sid global_sid_Builtin = /* Local well-known domain */
68{ 1, 1, {0,0,0,0,0,5}, {32,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
69const struct dom_sid global_sid_Builtin_Administrators = /* Builtin administrators */
70{ 1, 2, {0,0,0,0,0,5}, {32,544,0,0,0,0,0,0,0,0,0,0,0,0,0}};
71const struct dom_sid global_sid_Builtin_Users = /* Builtin users */
72{ 1, 2, {0,0,0,0,0,5}, {32,545,0,0,0,0,0,0,0,0,0,0,0,0,0}};
73const struct dom_sid global_sid_Builtin_Guests = /* Builtin guest users */
74{ 1, 2, {0,0,0,0,0,5}, {32,546,0,0,0,0,0,0,0,0,0,0,0,0,0}};
75const struct dom_sid global_sid_Builtin_Power_Users = /* Builtin power users */
76{ 1, 2, {0,0,0,0,0,5}, {32,547,0,0,0,0,0,0,0,0,0,0,0,0,0}};
77const struct dom_sid global_sid_Builtin_Account_Operators = /* Builtin account operators */
78{ 1, 2, {0,0,0,0,0,5}, {32,548,0,0,0,0,0,0,0,0,0,0,0,0,0}};
79const struct dom_sid global_sid_Builtin_Server_Operators = /* Builtin server operators */
80{ 1, 2, {0,0,0,0,0,5}, {32,549,0,0,0,0,0,0,0,0,0,0,0,0,0}};
81const struct dom_sid global_sid_Builtin_Print_Operators = /* Builtin print operators */
82{ 1, 2, {0,0,0,0,0,5}, {32,550,0,0,0,0,0,0,0,0,0,0,0,0,0}};
83const struct dom_sid global_sid_Builtin_Backup_Operators = /* Builtin backup operators */
84{ 1, 2, {0,0,0,0,0,5}, {32,551,0,0,0,0,0,0,0,0,0,0,0,0,0}};
85const struct dom_sid global_sid_Builtin_Replicator = /* Builtin replicator */
86{ 1, 2, {0,0,0,0,0,5}, {32,552,0,0,0,0,0,0,0,0,0,0,0,0,0}};
87const struct dom_sid global_sid_Builtin_PreWin2kAccess = /* Builtin pre win2k access */
88{ 1, 2, {0,0,0,0,0,5}, {32,554,0,0,0,0,0,0,0,0,0,0,0,0,0}};
89
90const struct dom_sid global_sid_Unix_Users = /* Unmapped Unix users */
91{ 1, 1, {0,0,0,0,0,22}, {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
92const struct dom_sid global_sid_Unix_Groups = /* Unmapped Unix groups */
93{ 1, 1, {0,0,0,0,0,22}, {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};
94
95/* Unused, left here for documentary purposes */
96#if 0
97#define SECURITY_NULL_SID_AUTHORITY 0
98#define SECURITY_WORLD_SID_AUTHORITY 1
99#define SECURITY_LOCAL_SID_AUTHORITY 2
100#define SECURITY_CREATOR_SID_AUTHORITY 3
101#define SECURITY_NT_AUTHORITY 5
102#endif
103
104static struct dom_sid system_sid_array[1] =
105{ { 1, 1, {0,0,0,0,0,5}, {18,0,0,0,0,0,0,0,0,0,0,0,0,0,0}} };
106static const struct security_token system_token = {
107 .num_sids = ARRAY_SIZE(system_sid_array),
108 .sids = system_sid_array,
109 .privilege_mask = SE_ALL_PRIVS
110};
111
112/****************************************************************************
113 Lookup string names for SID types.
114****************************************************************************/
115
116static const struct {
117 enum lsa_SidType sid_type;
118 const char *string;
119} sid_name_type[] = {
120 {SID_NAME_USE_NONE, "None"},
121 {SID_NAME_USER, "User"},
122 {SID_NAME_DOM_GRP, "Domain Group"},
123 {SID_NAME_DOMAIN, "Domain"},
124 {SID_NAME_ALIAS, "Local Group"},
125 {SID_NAME_WKN_GRP, "Well-known Group"},
126 {SID_NAME_DELETED, "Deleted Account"},
127 {SID_NAME_INVALID, "Invalid Account"},
128 {SID_NAME_UNKNOWN, "UNKNOWN"},
129 {SID_NAME_COMPUTER, "Computer"}
130};
131
132const char *sid_type_lookup(uint32_t sid_type)
133{
134 int i;
135
136 /* Look through list */
137 for (i=0; i < ARRAY_SIZE(sid_name_type); i++) {
138 if (sid_name_type[i].sid_type == sid_type) {
139 return sid_name_type[i].string;
140 }
141 }
142
143 /* Default return */
144 return "SID *TYPE* is INVALID";
145}
146
147/**************************************************************************
148 Create the SYSTEM token.
149***************************************************************************/
150
151const struct security_token *get_system_token(void)
152{
153 return &system_token;
154}
155
156bool sid_compose(struct dom_sid *dst, const struct dom_sid *domain_sid, uint32_t rid)
157{
158 sid_copy(dst, domain_sid);
159 return sid_append_rid(dst, rid);
160}
161
162/*****************************************************************
163 Removes the last rid from the end of a sid
164*****************************************************************/
165
166bool sid_split_rid(struct dom_sid *sid, uint32_t *rid)
167{
168 if (sid->num_auths > 0) {
169 sid->num_auths--;
170 if (rid != NULL) {
171 *rid = sid->sub_auths[sid->num_auths];
172 }
173 return true;
174 }
175 return false;
176}
177
178/*****************************************************************
179 Return the last rid from the end of a sid
180*****************************************************************/
181
182bool sid_peek_rid(const struct dom_sid *sid, uint32_t *rid)
183{
184 if (!sid || !rid)
185 return false;
186
187 if (sid->num_auths > 0) {
188 *rid = sid->sub_auths[sid->num_auths - 1];
189 return true;
190 }
191 return false;
192}
193
194/*****************************************************************
195 Return the last rid from the end of a sid
196 and check the sid against the exp_dom_sid
197*****************************************************************/
198
199bool sid_peek_check_rid(const struct dom_sid *exp_dom_sid, const struct dom_sid *sid, uint32_t *rid)
200{
201 if (!exp_dom_sid || !sid || !rid)
202 return false;
203
204 if (sid->num_auths != (exp_dom_sid->num_auths+1)) {
205 return false;
206 }
207
208 if (sid_compare_domain(exp_dom_sid, sid)!=0){
209 *rid=(-1);
210 return false;
211 }
212
213 return sid_peek_rid(sid, rid);
214}
215
216/*****************************************************************
217 Copies a sid
218*****************************************************************/
219
220void sid_copy(struct dom_sid *dst, const struct dom_sid *src)
221{
222 int i;
223
224 ZERO_STRUCTP(dst);
225
226 dst->sid_rev_num = src->sid_rev_num;
227 dst->num_auths = src->num_auths;
228
229 memcpy(&dst->id_auth[0], &src->id_auth[0], sizeof(src->id_auth));
230
231 for (i = 0; i < src->num_auths; i++)
232 dst->sub_auths[i] = src->sub_auths[i];
233}
234
235/*****************************************************************
236 Parse a on-the-wire SID (in a DATA_BLOB) to a struct dom_sid.
237*****************************************************************/
238
239bool sid_blob_parse(DATA_BLOB in, struct dom_sid *sid)
240{
241 enum ndr_err_code ndr_err;
242 ndr_err = ndr_pull_struct_blob_all(&in, NULL, sid,
243 (ndr_pull_flags_fn_t)ndr_pull_dom_sid);
244 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
245 return false;
246 }
247 return true;
248}
249
250/*****************************************************************
251 Parse a on-the-wire SID to a struct dom_sid.
252*****************************************************************/
253
254bool sid_parse(const char *inbuf, size_t len, struct dom_sid *sid)
255{
256 DATA_BLOB in = data_blob_const(inbuf, len);
257 return sid_blob_parse(in, sid);
258}
259
260/*****************************************************************
261 See if 2 SIDs are in the same domain
262 this just compares the leading sub-auths
263*****************************************************************/
264
265int sid_compare_domain(const struct dom_sid *sid1, const struct dom_sid *sid2)
266{
267 int n, i;
268
269 n = MIN(sid1->num_auths, sid2->num_auths);
270
271 for (i = n-1; i >= 0; --i)
272 if (sid1->sub_auths[i] != sid2->sub_auths[i])
273 return sid1->sub_auths[i] - sid2->sub_auths[i];
274
275 return dom_sid_compare_auth(sid1, sid2);
276}
277
278/*****************************************************************
279 Compare two sids.
280*****************************************************************/
281
282bool sid_equal(const struct dom_sid *sid1, const struct dom_sid *sid2)
283{
284 return dom_sid_compare(sid1, sid2) == 0;
285}
286
287/********************************************************************
288 Add SID to an array SIDs
289********************************************************************/
290
291NTSTATUS add_sid_to_array(TALLOC_CTX *mem_ctx, const struct dom_sid *sid,
292 struct dom_sid **sids, uint32_t *num)
293{
294 *sids = talloc_realloc(mem_ctx, *sids, struct dom_sid,
295 (*num)+1);
296 if (*sids == NULL) {
297 *num = 0;
298 return NT_STATUS_NO_MEMORY;
299 }
300
301 sid_copy(&((*sids)[*num]), sid);
302 *num += 1;
303
304 return NT_STATUS_OK;
305}
306
307
308/********************************************************************
309 Add SID to an array SIDs ensuring that it is not already there
310********************************************************************/
311
312NTSTATUS add_sid_to_array_unique(TALLOC_CTX *mem_ctx, const struct dom_sid *sid,
313 struct dom_sid **sids, uint32_t *num_sids)
314{
315 uint32_t i;
316
317 for (i=0; i<(*num_sids); i++) {
318 if (dom_sid_compare(sid, &(*sids)[i]) == 0)
319 return NT_STATUS_OK;
320 }
321
322 return add_sid_to_array(mem_ctx, sid, sids, num_sids);
323}
324
325/********************************************************************
326 Remove SID from an array
327********************************************************************/
328
329void del_sid_from_array(const struct dom_sid *sid, struct dom_sid **sids,
330 uint32_t *num)
331{
332 struct dom_sid *sid_list = *sids;
333 uint32_t i;
334
335 for ( i=0; i<*num; i++ ) {
336
337 /* if we find the SID, then decrement the count
338 and break out of the loop */
339
340 if ( sid_equal(sid, &sid_list[i]) ) {
341 *num -= 1;
342 break;
343 }
344 }
345
346 /* This loop will copy the remainder of the array
347 if i < num of sids ni the array */
348
349 for ( ; i<*num; i++ )
350 sid_copy( &sid_list[i], &sid_list[i+1] );
351
352 return;
353}
354
355bool add_rid_to_array_unique(TALLOC_CTX *mem_ctx,
356 uint32_t rid, uint32_t **pp_rids, size_t *p_num)
357{
358 size_t i;
359
360 for (i=0; i<*p_num; i++) {
361 if ((*pp_rids)[i] == rid)
362 return true;
363 }
364
365 *pp_rids = talloc_realloc(mem_ctx, *pp_rids, uint32_t, *p_num+1);
366
367 if (*pp_rids == NULL) {
368 *p_num = 0;
369 return false;
370 }
371
372 (*pp_rids)[*p_num] = rid;
373 *p_num += 1;
374 return true;
375}
376
377bool is_null_sid(const struct dom_sid *sid)
378{
379 static const struct dom_sid null_sid = {0};
380 return sid_equal(sid, &null_sid);
381}
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