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
)
134 if (all_zero((const uint8_t *)sid
, sizeof(struct dom_sid
))) {
138 return 8 + 4*sid
->num_auths
;
141 size_t ndr_size_dom_sid0(const struct dom_sid
*sid
, int flags
)
143 return ndr_size_dom_sid28(sid
, flags
);
149 void ndr_print_dom_sid(struct ndr_print
*ndr
, const char *name
, const struct dom_sid
*sid
)
151 struct dom_sid_buf buf
;
152 ndr
->print(ndr
, "%-25s: %s", name
, dom_sid_str_buf(sid
, &buf
));
155 void ndr_print_dom_sid2(struct ndr_print
*ndr
, const char *name
, const struct dom_sid
*sid
)
157 ndr_print_dom_sid(ndr
, name
, sid
);
160 void ndr_print_dom_sid28(struct ndr_print
*ndr
, const char *name
, const struct dom_sid
*sid
)
162 ndr_print_dom_sid(ndr
, name
, sid
);
165 void ndr_print_dom_sid0(struct ndr_print
*ndr
, const char *name
, const struct dom_sid
*sid
)
167 ndr_print_dom_sid(ndr
, name
, sid
);
172 parse a dom_sid2 - this is a dom_sid but with an extra copy of the num_auths field
174 enum ndr_err_code
ndr_pull_dom_sid2(struct ndr_pull
*ndr
, int ndr_flags
, struct dom_sid
*sid
)
177 if (!(ndr_flags
& NDR_SCALARS
)) {
178 return NDR_ERR_SUCCESS
;
180 NDR_CHECK(ndr_pull_uint3264(ndr
, NDR_SCALARS
, &num_auths
));
181 NDR_CHECK(ndr_pull_dom_sid(ndr
, ndr_flags
, sid
));
182 if (sid
->num_auths
!= num_auths
) {
183 return ndr_pull_error(ndr
, NDR_ERR_ARRAY_SIZE
,
184 "Bad array size %u should exceed %u",
185 num_auths
, sid
->num_auths
);
187 return NDR_ERR_SUCCESS
;
191 parse a dom_sid2 - this is a dom_sid but with an extra copy of the num_auths field
193 enum ndr_err_code
ndr_push_dom_sid2(struct ndr_push
*ndr
, int ndr_flags
, const struct dom_sid
*sid
)
195 if (!(ndr_flags
& NDR_SCALARS
)) {
196 return NDR_ERR_SUCCESS
;
198 NDR_CHECK(ndr_push_uint3264(ndr
, NDR_SCALARS
, sid
->num_auths
));
199 return ndr_push_dom_sid(ndr
, ndr_flags
, sid
);
203 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
205 enum ndr_err_code
ndr_pull_dom_sid28(struct ndr_pull
*ndr
, int ndr_flags
, struct dom_sid
*sid
)
207 enum ndr_err_code status
;
208 struct ndr_pull
*subndr
;
210 if (!(ndr_flags
& NDR_SCALARS
)) {
211 return NDR_ERR_SUCCESS
;
214 subndr
= talloc_zero(ndr
, struct ndr_pull
);
215 NDR_ERR_HAVE_NO_MEMORY(subndr
);
216 subndr
->flags
= ndr
->flags
;
217 subndr
->current_mem_ctx
= ndr
->current_mem_ctx
;
219 subndr
->data
= ndr
->data
+ ndr
->offset
;
220 subndr
->data_size
= 28;
223 NDR_CHECK(ndr_pull_advance(ndr
, 28));
225 status
= ndr_pull_dom_sid(subndr
, ndr_flags
, sid
);
226 if (!NDR_ERR_CODE_IS_SUCCESS(status
)) {
227 /* handle a w2k bug which send random data in the buffer */
229 } else if (sid
->num_auths
== 0) {
230 ZERO_STRUCT(sid
->sub_auths
);
233 return NDR_ERR_SUCCESS
;
237 push a dom_sid28 - this is a dom_sid in a 28 byte fixed buffer
239 enum ndr_err_code
ndr_push_dom_sid28(struct ndr_push
*ndr
, int ndr_flags
, const struct dom_sid
*sid
)
244 if (!(ndr_flags
& NDR_SCALARS
)) {
245 return NDR_ERR_SUCCESS
;
248 if (sid
->num_auths
> 5) {
249 return ndr_push_error(ndr
, NDR_ERR_RANGE
,
250 "dom_sid28 allows only up to 5 sub auth [%u]",
254 old_offset
= ndr
->offset
;
255 NDR_CHECK(ndr_push_dom_sid(ndr
, ndr_flags
, sid
));
257 padding
= 28 - (ndr
->offset
- old_offset
);
260 NDR_CHECK(ndr_push_zero(ndr
, padding
));
263 return NDR_ERR_SUCCESS
;
267 parse a dom_sid0 - this is a dom_sid in a variable byte buffer, which is maybe empty
269 enum ndr_err_code
ndr_pull_dom_sid0(struct ndr_pull
*ndr
, int ndr_flags
, struct dom_sid
*sid
)
271 if (!(ndr_flags
& NDR_SCALARS
)) {
272 return NDR_ERR_SUCCESS
;
275 if (ndr
->data_size
== ndr
->offset
) {
277 return NDR_ERR_SUCCESS
;
280 return ndr_pull_dom_sid(ndr
, ndr_flags
, sid
);
284 push a dom_sid0 - this is a dom_sid in a variable byte buffer, which is maybe empty
286 enum ndr_err_code
ndr_push_dom_sid0(struct ndr_push
*ndr
, int ndr_flags
, const struct dom_sid
*sid
)
288 if (!(ndr_flags
& NDR_SCALARS
)) {
289 return NDR_ERR_SUCCESS
;
293 return NDR_ERR_SUCCESS
;
296 if (all_zero((const uint8_t *)sid
, sizeof(struct dom_sid
))) {
297 return NDR_ERR_SUCCESS
;
300 return ndr_push_dom_sid(ndr
, ndr_flags
, sid
);
303 _PUBLIC_
enum ndr_err_code
ndr_push_dom_sid(struct ndr_push
*ndr
, int ndr_flags
, const struct dom_sid
*r
)
305 uint32_t cntr_sub_auths_0
;
306 if (ndr_flags
& NDR_SCALARS
) {
307 NDR_CHECK(ndr_push_align(ndr
, 4));
308 NDR_CHECK(ndr_push_uint8(ndr
, NDR_SCALARS
, r
->sid_rev_num
));
309 NDR_CHECK(ndr_push_int8(ndr
, NDR_SCALARS
, r
->num_auths
));
310 NDR_CHECK(ndr_push_array_uint8(ndr
, NDR_SCALARS
, r
->id_auth
, 6));
311 if (r
->num_auths
< 0 || r
->num_auths
> ARRAY_SIZE(r
->sub_auths
)) {
312 return ndr_push_error(ndr
, NDR_ERR_RANGE
, "value out of range");
314 for (cntr_sub_auths_0
= 0; cntr_sub_auths_0
< r
->num_auths
; cntr_sub_auths_0
++) {
315 NDR_CHECK(ndr_push_uint32(ndr
, NDR_SCALARS
, r
->sub_auths
[cntr_sub_auths_0
]));
318 return NDR_ERR_SUCCESS
;
321 _PUBLIC_
enum ndr_err_code
ndr_pull_dom_sid(struct ndr_pull
*ndr
, int ndr_flags
, struct dom_sid
*r
)
323 uint32_t cntr_sub_auths_0
;
324 if (ndr_flags
& NDR_SCALARS
) {
325 NDR_CHECK(ndr_pull_align(ndr
, 4));
326 NDR_CHECK(ndr_pull_uint8(ndr
, NDR_SCALARS
, &r
->sid_rev_num
));
327 NDR_CHECK(ndr_pull_int8(ndr
, NDR_SCALARS
, &r
->num_auths
));
328 if (r
->num_auths
< 0 || r
->num_auths
> ARRAY_SIZE(r
->sub_auths
)) {
329 return ndr_pull_error(ndr
, NDR_ERR_RANGE
, "value out of range");
331 NDR_CHECK(ndr_pull_array_uint8(ndr
, NDR_SCALARS
, r
->id_auth
, 6));
332 ZERO_STRUCT(r
->sub_auths
);
333 for (cntr_sub_auths_0
= 0; cntr_sub_auths_0
< r
->num_auths
; cntr_sub_auths_0
++) {
334 NDR_CHECK(ndr_pull_uint32(ndr
, NDR_SCALARS
, &r
->sub_auths
[cntr_sub_auths_0
]));
337 return NDR_ERR_SUCCESS
;