2 Unix SMB/CIFS implementation.
4 fast routines for getting the wire size of security objects
6 Copyright (C) Andrew Tridgell 2003
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 #include "librpc/gen_ndr/ndr_security.h"
25 #include "libcli/security/security.h"
28 return the wire size of a dom_sid
30 size_t ndr_size_dom_sid(const struct dom_sid *sid, int flags)
33 return 8 + 4*sid->num_auths;
36 size_t ndr_size_dom_sid28(const struct dom_sid *sid, int flags)
38 struct dom_sid zero_sid;
42 ZERO_STRUCT(zero_sid);
44 if (memcmp(&zero_sid, sid, sizeof(zero_sid)) == 0) {
48 return 8 + 4*sid->num_auths;
51 size_t ndr_size_dom_sid0(const struct dom_sid *sid, int flags)
53 return ndr_size_dom_sid28(sid, flags);
57 return the wire size of a security_ace
59 size_t ndr_size_security_ace(const struct security_ace *ace, int flags)
65 ret = 8 + ndr_size_dom_sid(&ace->trustee, flags);
68 case SEC_ACE_TYPE_ACCESS_ALLOWED_OBJECT:
69 case SEC_ACE_TYPE_ACCESS_DENIED_OBJECT:
70 case SEC_ACE_TYPE_SYSTEM_AUDIT_OBJECT:
71 case SEC_ACE_TYPE_SYSTEM_ALARM_OBJECT:
72 ret += 4; /* uint32 bitmap ace->object.object.flags */
73 if (ace->object.object.flags & SEC_ACE_OBJECT_TYPE_PRESENT) {
74 ret += 16; /* GUID ace->object.object.type.type */
76 if (ace->object.object.flags & SEC_ACE_INHERITED_OBJECT_TYPE_PRESENT) {
77 ret += 16; /* GUID ace->object.object.inherited_typeinherited_type */
88 return the wire size of a security_acl
90 size_t ndr_size_security_acl(const struct security_acl *acl, int flags)
96 for (i=0;i<acl->num_aces;i++) {
97 ret += ndr_size_security_ace(&acl->aces[i], flags);
103 return the wire size of a security descriptor
105 size_t ndr_size_security_descriptor(const struct security_descriptor *sd, int flags)
111 ret += ndr_size_dom_sid(sd->owner_sid, flags);
112 ret += ndr_size_dom_sid(sd->group_sid, flags);
113 ret += ndr_size_security_acl(sd->dacl, flags);
114 ret += ndr_size_security_acl(sd->sacl, flags);
121 void ndr_print_dom_sid(struct ndr_print *ndr, const char *name, const struct dom_sid *sid)
123 ndr->print(ndr, "%-25s: %s", name, dom_sid_string(ndr, sid));
126 void ndr_print_dom_sid2(struct ndr_print *ndr, const char *name, const struct dom_sid *sid)
128 ndr_print_dom_sid(ndr, name, sid);
131 void ndr_print_dom_sid28(struct ndr_print *ndr, const char *name, const struct dom_sid *sid)
133 ndr_print_dom_sid(ndr, name, sid);
136 void ndr_print_dom_sid0(struct ndr_print *ndr, const char *name, const struct dom_sid *sid)
138 ndr_print_dom_sid(ndr, name, sid);
143 parse a dom_sid2 - this is a dom_sid but with an extra copy of the num_auths field
145 enum ndr_err_code ndr_pull_dom_sid2(struct ndr_pull *ndr, int ndr_flags, struct dom_sid *sid)
148 if (!(ndr_flags & NDR_SCALARS)) {
149 return NDR_ERR_SUCCESS;
151 NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &num_auths));
152 NDR_CHECK(ndr_pull_dom_sid(ndr, ndr_flags, sid));
153 if (sid->num_auths != num_auths) {
154 return ndr_pull_error(ndr, NDR_ERR_ARRAY_SIZE,
155 "Bad array size %u should exceed %u",
156 num_auths, sid->num_auths);
158 return NDR_ERR_SUCCESS;
162 parse a dom_sid2 - this is a dom_sid but with an extra copy of the num_auths field
164 enum ndr_err_code ndr_push_dom_sid2(struct ndr_push *ndr, int ndr_flags, const struct dom_sid *sid)
166 if (!(ndr_flags & NDR_SCALARS)) {
167 return NDR_ERR_SUCCESS;
169 NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, sid->num_auths));
170 return ndr_push_dom_sid(ndr, ndr_flags, sid);
174 parse a dom_sid28 - this is a dom_sid in a fixed 28 byte buffer, so we need to ensure there are only upto 5 sub_auth
176 enum ndr_err_code ndr_pull_dom_sid28(struct ndr_pull *ndr, int ndr_flags, struct dom_sid *sid)
178 enum ndr_err_code status;
179 struct ndr_pull *subndr;
181 if (!(ndr_flags & NDR_SCALARS)) {
182 return NDR_ERR_SUCCESS;
185 subndr = talloc_zero(ndr, struct ndr_pull);
186 NDR_ERR_HAVE_NO_MEMORY(subndr);
187 subndr->flags = ndr->flags;
188 subndr->current_mem_ctx = ndr->current_mem_ctx;
190 subndr->data = ndr->data + ndr->offset;
191 subndr->data_size = 28;
194 NDR_CHECK(ndr_pull_advance(ndr, 28));
196 status = ndr_pull_dom_sid(subndr, ndr_flags, sid);
197 if (!NDR_ERR_CODE_IS_SUCCESS(status)) {
198 /* handle a w2k bug which send random data in the buffer */
200 } else if (sid->num_auths == 0 && sid->sub_auths) {
201 talloc_free(sid->sub_auths);
202 sid->sub_auths = NULL;
205 return NDR_ERR_SUCCESS;
209 push a dom_sid28 - this is a dom_sid in a 28 byte fixed buffer
211 enum ndr_err_code ndr_push_dom_sid28(struct ndr_push *ndr, int ndr_flags, const struct dom_sid *sid)
216 if (!(ndr_flags & NDR_SCALARS)) {
217 return NDR_ERR_SUCCESS;
220 if (sid->num_auths > 5) {
221 return ndr_push_error(ndr, NDR_ERR_RANGE,
222 "dom_sid28 allows only upto 5 sub auth [%u]",
226 old_offset = ndr->offset;
227 NDR_CHECK(ndr_push_dom_sid(ndr, ndr_flags, sid));
229 padding = 28 - (ndr->offset - old_offset);
232 NDR_CHECK(ndr_push_zero(ndr, padding));
235 return NDR_ERR_SUCCESS;
239 parse a dom_sid0 - this is a dom_sid in a variable byte buffer, which is maybe empty
241 enum ndr_err_code ndr_pull_dom_sid0(struct ndr_pull *ndr, int ndr_flags, struct dom_sid *sid)
243 if (!(ndr_flags & NDR_SCALARS)) {
244 return NDR_ERR_SUCCESS;
247 if (ndr->data_size == ndr->offset) {
249 return NDR_ERR_SUCCESS;
252 return ndr_pull_dom_sid(ndr, ndr_flags, sid);
256 push a dom_sid0 - this is a dom_sid in a variable byte buffer, which is maybe empty
258 enum ndr_err_code ndr_push_dom_sid0(struct ndr_push *ndr, int ndr_flags, const struct dom_sid *sid)
260 struct dom_sid zero_sid;
262 if (!(ndr_flags & NDR_SCALARS)) {
263 return NDR_ERR_SUCCESS;
267 return NDR_ERR_SUCCESS;
270 ZERO_STRUCT(zero_sid);
272 if (memcmp(&zero_sid, sid, sizeof(zero_sid)) == 0) {
273 return NDR_ERR_SUCCESS;
276 return ndr_push_dom_sid(ndr, ndr_flags, sid);