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 bool dom_sid_parse(const char *sidstr, struct dom_sid *ret)
90 uint_t rev, ia, num_sub_auths, i;
93 if ((sidstr[0] != 'S' && sidstr[0] != 's') || sidstr[1] != '-') {
99 if (!isdigit(sidstr[0])) {
103 rev = strtoul(sidstr, &p, 10);
109 if (!isdigit(sidstr[0])) {
113 ia = strtoul(sidstr, &p, 10);
120 for (i=0;sidstr[i];i++) {
121 if (sidstr[i] == '-') num_sub_auths++;
124 if (num_sub_auths > ARRAY_SIZE(ret->sub_auths)) {
128 ret->sid_rev_num = rev;
131 ret->id_auth[2] = ia >> 24;
132 ret->id_auth[3] = ia >> 16;
133 ret->id_auth[4] = ia >> 8;
134 ret->id_auth[5] = ia;
135 ret->num_auths = num_sub_auths;
137 for (i=0;i<num_sub_auths;i++) {
138 if (sidstr[0] != '-') {
143 if (!isdigit(sidstr[0])) {
147 ret->sub_auths[i] = strtoul(sidstr, &p, 10);
158 convert a string to a dom_sid, returning a talloc'd dom_sid
160 struct dom_sid *dom_sid_parse_talloc(TALLOC_CTX *mem_ctx, const char *sidstr)
163 ret = talloc(mem_ctx, struct dom_sid);
167 if (!dom_sid_parse(sidstr, ret)) {
176 convert a string to a dom_sid, returning a talloc'd dom_sid
178 struct dom_sid *dom_sid_parse_length(TALLOC_CTX *mem_ctx, const DATA_BLOB *sid)
181 char *p = talloc_strndup(mem_ctx, (char *)sid->data, sid->length);
185 ret = dom_sid_parse_talloc(mem_ctx, p);
191 copy a dom_sid structure
193 struct dom_sid *dom_sid_dup(TALLOC_CTX *mem_ctx, const struct dom_sid *dom_sid)
202 ret = talloc(mem_ctx, struct dom_sid);
207 ret->sid_rev_num = dom_sid->sid_rev_num;
208 ret->id_auth[0] = dom_sid->id_auth[0];
209 ret->id_auth[1] = dom_sid->id_auth[1];
210 ret->id_auth[2] = dom_sid->id_auth[2];
211 ret->id_auth[3] = dom_sid->id_auth[3];
212 ret->id_auth[4] = dom_sid->id_auth[4];
213 ret->id_auth[5] = dom_sid->id_auth[5];
214 ret->num_auths = dom_sid->num_auths;
216 for (i=0;i<dom_sid->num_auths;i++) {
217 ret->sub_auths[i] = dom_sid->sub_auths[i];
224 add a rid to a domain dom_sid to make a full dom_sid. This function
225 returns a new sid in the supplied memory context
227 struct dom_sid *dom_sid_add_rid(TALLOC_CTX *mem_ctx,
228 const struct dom_sid *domain_sid,
233 sid = talloc(mem_ctx, struct dom_sid);
234 if (!sid) return NULL;
238 sid->sub_auths[sid->num_auths] = rid;
245 Split up a SID into its domain and RID part
247 NTSTATUS dom_sid_split_rid(TALLOC_CTX *mem_ctx, const struct dom_sid *sid,
248 struct dom_sid **domain, uint32_t *rid)
250 if (sid->num_auths == 0) {
251 return NT_STATUS_INVALID_PARAMETER;
255 if (!(*domain = dom_sid_dup(mem_ctx, sid))) {
256 return NT_STATUS_NO_MEMORY;
259 (*domain)->num_auths -= 1;
263 *rid = sid->sub_auths[sid->num_auths - 1];
270 return true if the 2nd sid is in the domain given by the first sid
272 bool dom_sid_in_domain(const struct dom_sid *domain_sid,
273 const struct dom_sid *sid)
277 if (!domain_sid || !sid) {
281 if (domain_sid->num_auths > sid->num_auths) {
285 for (i = domain_sid->num_auths-1; i >= 0; --i) {
286 if (domain_sid->sub_auths[i] != sid->sub_auths[i]) {
291 return dom_sid_compare_auth(domain_sid, sid) == 0;
295 convert a dom_sid to a string
297 char *dom_sid_string(TALLOC_CTX *mem_ctx, const struct dom_sid *sid)
304 return talloc_strdup(mem_ctx, "(NULL SID)");
307 maxlen = sid->num_auths * 11 + 25;
308 ret = talloc_array(mem_ctx, char, maxlen);
309 if (!ret) return talloc_strdup(mem_ctx, "(SID ERR)");
311 ia = (sid->id_auth[5]) +
312 (sid->id_auth[4] << 8 ) +
313 (sid->id_auth[3] << 16) +
314 (sid->id_auth[2] << 24);
316 ofs = snprintf(ret, maxlen, "S-%u-%lu",
317 (unsigned int)sid->sid_rev_num, (unsigned long)ia);
319 for (i = 0; i < sid->num_auths; i++) {
320 ofs += snprintf(ret + ofs, maxlen - ofs, "-%lu",
321 (unsigned long)sid->sub_auths[i]);