2 Unix SMB/CIFS implementation.
4 fast routines for getting the wire size of security objects
6 Copyright (C) Andrew Tridgell 2003
7 Copyright (C) Stefan Metzmacher 2006-2008
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/>.
25 #include "librpc/gen_ndr/ndr_security.h"
26 #include "../libcli/security/security.h"
29 return the wire size of a security_ace
31 size_t ndr_size_security_ace(const struct security_ace
*ace
, int flags
)
37 ret
= 8 + ndr_size_dom_sid(&ace
->trustee
, flags
);
40 case SEC_ACE_TYPE_ACCESS_ALLOWED_OBJECT
:
41 case SEC_ACE_TYPE_ACCESS_DENIED_OBJECT
:
42 case SEC_ACE_TYPE_SYSTEM_AUDIT_OBJECT
:
43 case SEC_ACE_TYPE_SYSTEM_ALARM_OBJECT
:
44 ret
+= 4; /* uint32 bitmap ace->object.object.flags */
45 if (ace
->object
.object
.flags
& SEC_ACE_OBJECT_TYPE_PRESENT
) {
46 ret
+= 16; /* GUID ace->object.object.type.type */
48 if (ace
->object
.object
.flags
& SEC_ACE_INHERITED_OBJECT_TYPE_PRESENT
) {
49 ret
+= 16; /* GUID ace->object.object.inherited_typeinherited_type */
59 enum ndr_err_code
ndr_pull_security_ace(struct ndr_pull
*ndr
, int ndr_flags
, struct security_ace
*r
)
61 if (ndr_flags
& NDR_SCALARS
) {
62 uint32_t start_ofs
= ndr
->offset
;
65 NDR_CHECK(ndr_pull_align(ndr
, 4));
66 NDR_CHECK(ndr_pull_security_ace_type(ndr
, NDR_SCALARS
, &r
->type
));
67 NDR_CHECK(ndr_pull_security_ace_flags(ndr
, NDR_SCALARS
, &r
->flags
));
68 NDR_CHECK(ndr_pull_uint16(ndr
, NDR_SCALARS
, &r
->size
));
69 NDR_CHECK(ndr_pull_uint32(ndr
, NDR_SCALARS
, &r
->access_mask
));
70 NDR_CHECK(ndr_pull_set_switch_value(ndr
, &r
->object
, r
->type
));
71 NDR_CHECK(ndr_pull_security_ace_object_ctr(ndr
, NDR_SCALARS
, &r
->object
));
72 NDR_CHECK(ndr_pull_dom_sid(ndr
, NDR_SCALARS
, &r
->trustee
));
73 size
= ndr
->offset
- start_ofs
;
75 return ndr_pull_error(ndr
, NDR_ERR_BUFSIZE
,
76 "ndr_pull_security_ace: r->size %u < size %u",
77 (unsigned)r
->size
, size
);
80 NDR_PULL_NEED_BYTES(ndr
, pad
);
83 if (ndr_flags
& NDR_BUFFERS
) {
84 NDR_CHECK(ndr_pull_set_switch_value(ndr
, &r
->object
, r
->type
));
85 NDR_CHECK(ndr_pull_security_ace_object_ctr(ndr
, NDR_BUFFERS
, &r
->object
));
87 return NDR_ERR_SUCCESS
;
91 return the wire size of a security_acl
93 size_t ndr_size_security_acl(const struct security_acl
*theacl
, int flags
)
97 if (!theacl
) return 0;
99 for (i
=0;i
<theacl
->num_aces
;i
++) {
100 ret
+= ndr_size_security_ace(&theacl
->aces
[i
], flags
);
106 return the wire size of a security descriptor
108 size_t ndr_size_security_descriptor(const struct security_descriptor
*sd
, int flags
)
114 ret
+= ndr_size_dom_sid(sd
->owner_sid
, flags
);
115 ret
+= ndr_size_dom_sid(sd
->group_sid
, flags
);
116 ret
+= ndr_size_security_acl(sd
->dacl
, flags
);
117 ret
+= ndr_size_security_acl(sd
->sacl
, flags
);
122 return the wire size of a dom_sid
124 size_t ndr_size_dom_sid(const struct dom_sid
*sid
, int flags
)
127 return 8 + 4*sid
->num_auths
;
130 size_t ndr_size_dom_sid28(const struct dom_sid
*sid
, int flags
)
132 if (all_zero((const uint8_t *)sid
, sizeof(struct dom_sid
))) {
135 return ndr_size_dom_sid(sid
, flags
);
138 size_t ndr_size_dom_sid0(const struct dom_sid
*sid
, int flags
)
140 return ndr_size_dom_sid28(sid
, flags
);
146 void ndr_print_dom_sid(struct ndr_print
*ndr
, const char *name
, const struct dom_sid
*sid
)
148 struct dom_sid_buf buf
;
149 ndr
->print(ndr
, "%-25s: %s", name
, dom_sid_str_buf(sid
, &buf
));
152 void ndr_print_dom_sid2(struct ndr_print
*ndr
, const char *name
, const struct dom_sid
*sid
)
154 ndr_print_dom_sid(ndr
, name
, sid
);
157 void ndr_print_dom_sid28(struct ndr_print
*ndr
, const char *name
, const struct dom_sid
*sid
)
159 ndr_print_dom_sid(ndr
, name
, sid
);
162 void ndr_print_dom_sid0(struct ndr_print
*ndr
, const char *name
, const struct dom_sid
*sid
)
164 ndr_print_dom_sid(ndr
, name
, sid
);
169 parse a dom_sid2 - this is a dom_sid but with an extra copy of the num_auths field
171 enum ndr_err_code
ndr_pull_dom_sid2(struct ndr_pull
*ndr
, int ndr_flags
, struct dom_sid
*sid
)
174 if (!(ndr_flags
& NDR_SCALARS
)) {
175 return NDR_ERR_SUCCESS
;
177 NDR_CHECK(ndr_pull_uint3264(ndr
, NDR_SCALARS
, &num_auths
));
178 NDR_CHECK(ndr_pull_dom_sid(ndr
, ndr_flags
, sid
));
179 if (sid
->num_auths
!= num_auths
) {
180 return ndr_pull_error(ndr
, NDR_ERR_ARRAY_SIZE
,
181 "Bad num_auths %u; should equal %u",
182 num_auths
, sid
->num_auths
);
184 return NDR_ERR_SUCCESS
;
188 parse a dom_sid2 - this is a dom_sid but with an extra copy of the num_auths field
190 enum ndr_err_code
ndr_push_dom_sid2(struct ndr_push
*ndr
, int ndr_flags
, const struct dom_sid
*sid
)
192 if (!(ndr_flags
& NDR_SCALARS
)) {
193 return NDR_ERR_SUCCESS
;
195 NDR_CHECK(ndr_push_uint3264(ndr
, NDR_SCALARS
, sid
->num_auths
));
196 return ndr_push_dom_sid(ndr
, ndr_flags
, sid
);
200 parse a dom_sid28 - this is a dom_sid in a fixed 28 byte buffer, so we need to ensure there are only up to 5 sub_auth
202 enum ndr_err_code
ndr_pull_dom_sid28(struct ndr_pull
*ndr
, int ndr_flags
, struct dom_sid
*sid
)
204 enum ndr_err_code status
;
205 struct ndr_pull
*subndr
;
207 if (!(ndr_flags
& NDR_SCALARS
)) {
208 return NDR_ERR_SUCCESS
;
211 subndr
= talloc_zero(ndr
, struct ndr_pull
);
212 NDR_ERR_HAVE_NO_MEMORY(subndr
);
213 subndr
->flags
= ndr
->flags
;
214 subndr
->current_mem_ctx
= ndr
->current_mem_ctx
;
216 subndr
->data
= ndr
->data
+ ndr
->offset
;
217 subndr
->data_size
= 28;
220 NDR_CHECK(ndr_pull_advance(ndr
, 28));
222 status
= ndr_pull_dom_sid(subndr
, ndr_flags
, sid
);
223 if (!NDR_ERR_CODE_IS_SUCCESS(status
)) {
224 /* handle a w2k bug which send random data in the buffer */
226 } else if (sid
->num_auths
== 0) {
227 ZERO_STRUCT(sid
->sub_auths
);
230 return NDR_ERR_SUCCESS
;
234 push a dom_sid28 - this is a dom_sid in a 28 byte fixed buffer
236 enum ndr_err_code
ndr_push_dom_sid28(struct ndr_push
*ndr
, int ndr_flags
, const struct dom_sid
*sid
)
241 if (!(ndr_flags
& NDR_SCALARS
)) {
242 return NDR_ERR_SUCCESS
;
245 if (sid
->num_auths
> 5) {
246 return ndr_push_error(ndr
, NDR_ERR_RANGE
,
247 "dom_sid28 allows only up to 5 sub auth [%u]",
251 old_offset
= ndr
->offset
;
252 NDR_CHECK(ndr_push_dom_sid(ndr
, ndr_flags
, sid
));
254 padding
= 28 - (ndr
->offset
- old_offset
);
257 NDR_CHECK(ndr_push_zero(ndr
, padding
));
260 return NDR_ERR_SUCCESS
;
264 parse a dom_sid0 - this is a dom_sid in a variable byte buffer, which is maybe empty
266 enum ndr_err_code
ndr_pull_dom_sid0(struct ndr_pull
*ndr
, int ndr_flags
, struct dom_sid
*sid
)
268 if (!(ndr_flags
& NDR_SCALARS
)) {
269 return NDR_ERR_SUCCESS
;
272 if (ndr
->data_size
== ndr
->offset
) {
274 return NDR_ERR_SUCCESS
;
277 return ndr_pull_dom_sid(ndr
, ndr_flags
, sid
);
281 push a dom_sid0 - this is a dom_sid in a variable byte buffer, which is maybe empty
283 enum ndr_err_code
ndr_push_dom_sid0(struct ndr_push
*ndr
, int ndr_flags
, const struct dom_sid
*sid
)
285 if (!(ndr_flags
& NDR_SCALARS
)) {
286 return NDR_ERR_SUCCESS
;
290 return NDR_ERR_SUCCESS
;
293 if (all_zero((const uint8_t *)sid
, sizeof(struct dom_sid
))) {
294 return NDR_ERR_SUCCESS
;
297 return ndr_push_dom_sid(ndr
, ndr_flags
, sid
);
300 _PUBLIC_
enum ndr_err_code
ndr_push_dom_sid(struct ndr_push
*ndr
, int ndr_flags
, const struct dom_sid
*r
)
302 uint32_t cntr_sub_auths_0
;
303 if (ndr_flags
& NDR_SCALARS
) {
304 NDR_CHECK(ndr_push_align(ndr
, 4));
305 NDR_CHECK(ndr_push_uint8(ndr
, NDR_SCALARS
, r
->sid_rev_num
));
306 NDR_CHECK(ndr_push_int8(ndr
, NDR_SCALARS
, r
->num_auths
));
307 NDR_CHECK(ndr_push_array_uint8(ndr
, NDR_SCALARS
, r
->id_auth
, 6));
308 if (r
->num_auths
< 0 || r
->num_auths
> ARRAY_SIZE(r
->sub_auths
)) {
309 return ndr_push_error(ndr
, NDR_ERR_RANGE
, "value out of range");
311 for (cntr_sub_auths_0
= 0; cntr_sub_auths_0
< r
->num_auths
; cntr_sub_auths_0
++) {
312 NDR_CHECK(ndr_push_uint32(ndr
, NDR_SCALARS
, r
->sub_auths
[cntr_sub_auths_0
]));
315 return NDR_ERR_SUCCESS
;
318 _PUBLIC_
enum ndr_err_code
ndr_pull_dom_sid(struct ndr_pull
*ndr
, int ndr_flags
, struct dom_sid
*r
)
320 uint32_t cntr_sub_auths_0
;
321 if (ndr_flags
& NDR_SCALARS
) {
322 NDR_CHECK(ndr_pull_align(ndr
, 4));
323 NDR_CHECK(ndr_pull_uint8(ndr
, NDR_SCALARS
, &r
->sid_rev_num
));
324 NDR_CHECK(ndr_pull_int8(ndr
, NDR_SCALARS
, &r
->num_auths
));
325 if (r
->num_auths
< 0 || r
->num_auths
> ARRAY_SIZE(r
->sub_auths
)) {
326 return ndr_pull_error(ndr
, NDR_ERR_RANGE
, "value out of range");
328 NDR_CHECK(ndr_pull_array_uint8(ndr
, NDR_SCALARS
, r
->id_auth
, 6));
329 ZERO_STRUCT(r
->sub_auths
);
330 for (cntr_sub_auths_0
= 0; cntr_sub_auths_0
< r
->num_auths
; cntr_sub_auths_0
++) {
331 NDR_CHECK(ndr_pull_uint32(ndr
, NDR_SCALARS
, &r
->sub_auths
[cntr_sub_auths_0
]));
334 return NDR_ERR_SUCCESS
;