2 Unix SMB/CIFS implementation.
3 Samba utility functions
5 Copyright (C) Stefan (metze) Metzmacher 2002-2004
6 Copyright (C) Andrew Tridgell 1992-2004
7 Copyright (C) Jeremy Allison 1999
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 3 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, see <http://www.gnu.org/licenses/>.
24 #include "librpc/gen_ndr/security.h"
27 /*****************************************************************
28 Compare the auth portion of two sids.
29 *****************************************************************/
31 static int dom_sid_compare_auth(const struct dom_sid *sid1,
32 const struct dom_sid *sid2)
43 if (sid1->sid_rev_num != sid2->sid_rev_num)
44 return sid1->sid_rev_num - sid2->sid_rev_num;
46 for (i = 0; i < 6; i++)
47 if (sid1->id_auth[i] != sid2->id_auth[i])
48 return sid1->id_auth[i] - sid2->id_auth[i];
53 /*****************************************************************
55 *****************************************************************/
57 int dom_sid_compare(const struct dom_sid *sid1, const struct dom_sid *sid2)
68 /* Compare most likely different rids, first: i.e start at end */
69 if (sid1->num_auths != sid2->num_auths)
70 return sid1->num_auths - sid2->num_auths;
72 for (i = sid1->num_auths-1; i >= 0; --i)
73 if (sid1->sub_auths[i] != sid2->sub_auths[i])
74 return sid1->sub_auths[i] - sid2->sub_auths[i];
76 return dom_sid_compare_auth(sid1, sid2);
79 /*****************************************************************
81 *****************************************************************/
83 bool dom_sid_equal(const struct dom_sid *sid1, const struct dom_sid *sid2)
85 return dom_sid_compare(sid1, sid2) == 0;
88 /* Yes, I did think about multibyte issues here, and for all I can see there's
89 * none of those for parsing a SID. */
92 bool dom_sid_parse(const char *sidstr, struct dom_sid *ret)
94 uint_t rev, ia, num_sub_auths, i;
97 if (strncasecmp(sidstr, "S-", 2)) {
103 rev = strtol(sidstr, &p, 10);
109 ia = strtol(sidstr, &p, 10);
116 for (i=0;sidstr[i];i++) {
117 if (sidstr[i] == '-') num_sub_auths++;
120 if (num_sub_auths > MAXSUBAUTHS) {
124 ret->sid_rev_num = rev;
127 ret->id_auth[2] = ia >> 24;
128 ret->id_auth[3] = ia >> 16;
129 ret->id_auth[4] = ia >> 8;
130 ret->id_auth[5] = ia;
131 ret->num_auths = num_sub_auths;
133 for (i=0;i<num_sub_auths;i++) {
134 if (sidstr[0] != '-') {
138 ret->sub_auths[i] = strtoul(sidstr, &p, 10);
149 convert a string to a dom_sid, returning a talloc'd dom_sid
151 struct dom_sid *dom_sid_parse_talloc(TALLOC_CTX *mem_ctx, const char *sidstr)
154 ret = talloc(mem_ctx, struct dom_sid);
158 if (!dom_sid_parse(sidstr, ret)) {
167 convert a string to a dom_sid, returning a talloc'd dom_sid
169 struct dom_sid *dom_sid_parse_length(TALLOC_CTX *mem_ctx, const DATA_BLOB *sid)
172 char *p = talloc_strndup(mem_ctx, (char *)sid->data, sid->length);
176 ret = dom_sid_parse_talloc(mem_ctx, p);
182 copy a dom_sid structure
184 struct dom_sid *dom_sid_dup(TALLOC_CTX *mem_ctx, const struct dom_sid *dom_sid)
193 ret = talloc(mem_ctx, struct dom_sid);
198 ret->sid_rev_num = dom_sid->sid_rev_num;
199 ret->id_auth[0] = dom_sid->id_auth[0];
200 ret->id_auth[1] = dom_sid->id_auth[1];
201 ret->id_auth[2] = dom_sid->id_auth[2];
202 ret->id_auth[3] = dom_sid->id_auth[3];
203 ret->id_auth[4] = dom_sid->id_auth[4];
204 ret->id_auth[5] = dom_sid->id_auth[5];
205 ret->num_auths = dom_sid->num_auths;
207 for (i=0;i<dom_sid->num_auths;i++) {
208 ret->sub_auths[i] = dom_sid->sub_auths[i];
215 add a rid to a domain dom_sid to make a full dom_sid. This function
216 returns a new sid in the supplied memory context
218 struct dom_sid *dom_sid_add_rid(TALLOC_CTX *mem_ctx,
219 const struct dom_sid *domain_sid,
224 sid = talloc(mem_ctx, struct dom_sid);
225 if (!sid) return NULL;
229 sid->sub_auths[sid->num_auths] = rid;
236 Split up a SID into its domain and RID part
238 NTSTATUS dom_sid_split_rid(TALLOC_CTX *mem_ctx, const struct dom_sid *sid,
239 struct dom_sid **domain, uint32_t *rid)
241 if (sid->num_auths == 0) {
242 return NT_STATUS_INVALID_PARAMETER;
246 if (!(*domain = dom_sid_dup(mem_ctx, sid))) {
247 return NT_STATUS_NO_MEMORY;
250 (*domain)->num_auths -= 1;
254 *rid = sid->sub_auths[sid->num_auths - 1];
261 return true if the 2nd sid is in the domain given by the first sid
263 bool dom_sid_in_domain(const struct dom_sid *domain_sid,
264 const struct dom_sid *sid)
268 if (!domain_sid || !sid) {
272 if (domain_sid->num_auths > sid->num_auths) {
276 for (i = domain_sid->num_auths-1; i >= 0; --i) {
277 if (domain_sid->sub_auths[i] != sid->sub_auths[i]) {
282 return dom_sid_compare_auth(domain_sid, sid) == 0;
286 convert a dom_sid to a string
288 char *dom_sid_string(TALLOC_CTX *mem_ctx, const struct dom_sid *sid)
295 return talloc_strdup(mem_ctx, "(NULL SID)");
298 maxlen = sid->num_auths * 11 + 25;
299 ret = talloc_array(mem_ctx, char, maxlen);
300 if (!ret) return talloc_strdup(mem_ctx, "(SID ERR)");
302 ia = (sid->id_auth[5]) +
303 (sid->id_auth[4] << 8 ) +
304 (sid->id_auth[3] << 16) +
305 (sid->id_auth[2] << 24);
307 ofs = snprintf(ret, maxlen, "S-%u-%lu",
308 (unsigned int)sid->sid_rev_num, (unsigned long)ia);
310 for (i = 0; i < sid->num_auths; i++) {
311 ofs += snprintf(ret + ofs, maxlen - ofs, "-%lu",
312 (unsigned long)sid->sub_auths[i]);