source: vendor/3.6.0/source4/libcli/smb2/create.c

Last change on this file was 740, checked in by Silvan Scherrer, 13 years ago

Samba Server: update vendor to 3.6.0
File size: 8.5 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3
4 SMB2 client tree handling
5
6 Copyright (C) Andrew Tridgell 2005
7
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.
12
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.
17
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/>.
20*/
21
22#include "includes.h"
23#include "libcli/raw/libcliraw.h"
24#include "libcli/raw/raw_proto.h"
25#include "libcli/smb2/smb2.h"
26#include "libcli/smb2/smb2_calls.h"
27#include "librpc/gen_ndr/ndr_security.h"
28
29/*
30 send a create request
31*/
32struct smb2_request *smb2_create_send(struct smb2_tree *tree, struct smb2_create *io)
33{
34 struct smb2_request *req;
35 NTSTATUS status;
36 DATA_BLOB blob;
37 struct smb2_create_blobs blobs;
38 int i;
39
40 ZERO_STRUCT(blobs);
41
42 req = smb2_request_init_tree(tree, SMB2_OP_CREATE, 0x38, true, 0);
43 if (req == NULL) return NULL;
44
45 SCVAL(req->out.body, 0x02, io->in.security_flags);
46 SCVAL(req->out.body, 0x03, io->in.oplock_level);
47 SIVAL(req->out.body, 0x04, io->in.impersonation_level);
48 SBVAL(req->out.body, 0x08, io->in.create_flags);
49 SBVAL(req->out.body, 0x10, io->in.reserved);
50 SIVAL(req->out.body, 0x18, io->in.desired_access);
51 SIVAL(req->out.body, 0x1C, io->in.file_attributes);
52 SIVAL(req->out.body, 0x20, io->in.share_access);
53 SIVAL(req->out.body, 0x24, io->in.create_disposition);
54 SIVAL(req->out.body, 0x28, io->in.create_options);
55
56 status = smb2_push_o16s16_string(&req->out, 0x2C, io->in.fname);
57 if (!NT_STATUS_IS_OK(status)) {
58 talloc_free(req);
59 return NULL;
60 }
61
62 /* now add all the optional blobs */
63 if (io->in.eas.num_eas != 0) {
64 DATA_BLOB b = data_blob_talloc(req, NULL,
65 ea_list_size_chained(io->in.eas.num_eas, io->in.eas.eas, 4));
66 ea_put_list_chained(b.data, io->in.eas.num_eas, io->in.eas.eas, 4);
67 status = smb2_create_blob_add(req, &blobs,
68 SMB2_CREATE_TAG_EXTA, b);
69 if (!NT_STATUS_IS_OK(status)) {
70 talloc_free(req);
71 return NULL;
72 }
73 data_blob_free(&b);
74 }
75
76 /* an empty MxAc tag seems to be used to ask the server to
77 return the maximum access mask allowed on the file */
78 if (io->in.query_maximal_access) {
79 /* TODO: MS-SMB2 2.2.13.2.5 says this can contain a timestamp? What to do
80 with that if it doesn't match? */
81 status = smb2_create_blob_add(req, &blobs,
82 SMB2_CREATE_TAG_MXAC, data_blob(NULL, 0));
83 if (!NT_STATUS_IS_OK(status)) {
84 talloc_free(req);
85 return NULL;
86 }
87 }
88
89 if (io->in.alloc_size != 0) {
90 uint8_t data[8];
91 SBVAL(data, 0, io->in.alloc_size);
92 status = smb2_create_blob_add(req, &blobs,
93 SMB2_CREATE_TAG_ALSI, data_blob_const(data, 8));
94 if (!NT_STATUS_IS_OK(status)) {
95 talloc_free(req);
96 return NULL;
97 }
98 }
99
100 if (io->in.durable_open) {
101 status = smb2_create_blob_add(req, &blobs,
102 SMB2_CREATE_TAG_DHNQ, data_blob_talloc_zero(req, 16));
103 if (!NT_STATUS_IS_OK(status)) {
104 talloc_free(req);
105 return NULL;
106 }
107 }
108
109 if (io->in.durable_handle) {
110 uint8_t data[16];
111 smb2_push_handle(data, io->in.durable_handle);
112 status = smb2_create_blob_add(req, &blobs,
113 SMB2_CREATE_TAG_DHNC, data_blob_const(data, 16));
114 if (!NT_STATUS_IS_OK(status)) {
115 talloc_free(req);
116 return NULL;
117 }
118 }
119
120 if (io->in.timewarp) {
121 uint8_t data[8];
122 SBVAL(data, 0, io->in.timewarp);
123 status = smb2_create_blob_add(req, &blobs,
124 SMB2_CREATE_TAG_TWRP, data_blob_const(data, 8));
125 if (!NT_STATUS_IS_OK(status)) {
126 talloc_free(req);
127 return NULL;
128 }
129 }
130
131 if (io->in.sec_desc) {
132 enum ndr_err_code ndr_err;
133 DATA_BLOB sd_blob;
134 ndr_err = ndr_push_struct_blob(&sd_blob, req, io->in.sec_desc,
135 (ndr_push_flags_fn_t)ndr_push_security_descriptor);
136 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
137 talloc_free(req);
138 return NULL;
139 }
140 status = smb2_create_blob_add(req, &blobs,
141 SMB2_CREATE_TAG_SECD, sd_blob);
142 if (!NT_STATUS_IS_OK(status)) {
143 talloc_free(req);
144 return NULL;
145 }
146 }
147
148 if (io->in.query_on_disk_id) {
149 status = smb2_create_blob_add(req, &blobs,
150 SMB2_CREATE_TAG_QFID, data_blob(NULL, 0));
151 if (!NT_STATUS_IS_OK(status)) {
152 talloc_free(req);
153 return NULL;
154 }
155 }
156
157 if (io->in.lease_request) {
158 uint8_t data[32];
159
160 memcpy(&data[0], &io->in.lease_request->lease_key, 16);
161 SIVAL(data, 16, io->in.lease_request->lease_state);
162 SIVAL(data, 20, io->in.lease_request->lease_flags);
163 SBVAL(data, 24, io->in.lease_request->lease_duration);
164
165 status = smb2_create_blob_add(req, &blobs,
166 SMB2_CREATE_TAG_RQLS,
167 data_blob_const(data, 32));
168 if (!NT_STATUS_IS_OK(status)) {
169 talloc_free(req);
170 return NULL;
171 }
172 }
173
174 /* and any custom blobs */
175 for (i=0;i<io->in.blobs.num_blobs;i++) {
176 status = smb2_create_blob_add(req, &blobs,
177 io->in.blobs.blobs[i].tag,
178 io->in.blobs.blobs[i].data);
179 if (!NT_STATUS_IS_OK(status)) {
180 talloc_free(req);
181 return NULL;
182 }
183 }
184
185
186 status = smb2_create_blob_push(req, &blob, blobs);
187 if (!NT_STATUS_IS_OK(status)) {
188 talloc_free(req);
189 return NULL;
190 }
191
192 status = smb2_push_o32s32_blob(&req->out, 0x30, blob);
193 if (!NT_STATUS_IS_OK(status)) {
194 talloc_free(req);
195 return NULL;
196 }
197
198 data_blob_free(&blob);
199
200 smb2_transport_send(req);
201
202 return req;
203}
204
205
206/*
207 recv a create reply
208*/
209NTSTATUS smb2_create_recv(struct smb2_request *req, TALLOC_CTX *mem_ctx, struct smb2_create *io)
210{
211 NTSTATUS status;
212 DATA_BLOB blob;
213 int i;
214
215 if (!smb2_request_receive(req) ||
216 !smb2_request_is_ok(req)) {
217 return smb2_request_destroy(req);
218 }
219
220 SMB2_CHECK_PACKET_RECV(req, 0x58, true);
221 ZERO_STRUCT(io->out);
222 io->out.oplock_level = CVAL(req->in.body, 0x02);
223 io->out.reserved = CVAL(req->in.body, 0x03);
224 io->out.create_action = IVAL(req->in.body, 0x04);
225 io->out.create_time = smbcli_pull_nttime(req->in.body, 0x08);
226 io->out.access_time = smbcli_pull_nttime(req->in.body, 0x10);
227 io->out.write_time = smbcli_pull_nttime(req->in.body, 0x18);
228 io->out.change_time = smbcli_pull_nttime(req->in.body, 0x20);
229 io->out.alloc_size = BVAL(req->in.body, 0x28);
230 io->out.size = BVAL(req->in.body, 0x30);
231 io->out.file_attr = IVAL(req->in.body, 0x38);
232 io->out.reserved2 = IVAL(req->in.body, 0x3C);
233 smb2_pull_handle(req->in.body+0x40, &io->out.file.handle);
234 status = smb2_pull_o32s32_blob(&req->in, mem_ctx, req->in.body+0x50, &blob);
235 if (!NT_STATUS_IS_OK(status)) {
236 smb2_request_destroy(req);
237 return status;
238 }
239
240 status = smb2_create_blob_parse(mem_ctx, blob, &io->out.blobs);
241 if (!NT_STATUS_IS_OK(status)) {
242 smb2_request_destroy(req);
243 return status;
244 }
245
246 /* pull out the parsed blobs */
247 for (i=0;i<io->out.blobs.num_blobs;i++) {
248 if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_MXAC) == 0) {
249 /* TODO: this also contains a status field in
250 first 4 bytes */
251 if (io->out.blobs.blobs[i].data.length != 8) {
252 smb2_request_destroy(req);
253 return NT_STATUS_INVALID_NETWORK_RESPONSE;
254 }
255 io->out.maximal_access = IVAL(io->out.blobs.blobs[i].data.data, 4);
256 }
257 if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_QFID) == 0) {
258 if (io->out.blobs.blobs[i].data.length != 32) {
259 smb2_request_destroy(req);
260 return NT_STATUS_INVALID_NETWORK_RESPONSE;
261 }
262 memcpy(io->out.on_disk_id, io->out.blobs.blobs[i].data.data, 32);
263 }
264 if (strcmp(io->out.blobs.blobs[i].tag, SMB2_CREATE_TAG_RQLS) == 0) {
265 uint8_t *data;
266 if (io->out.blobs.blobs[i].data.length != 32) {
267 smb2_request_destroy(req);
268 return NT_STATUS_INVALID_NETWORK_RESPONSE;
269 }
270
271 data = io->out.blobs.blobs[i].data.data;
272 memcpy(&io->out.lease_response.lease_key, data, 16);
273 io->out.lease_response.lease_state = IVAL(data, 16);
274 io->out.lease_response.lease_flags = IVAL(data, 20);
275 io->out.lease_response.lease_duration = BVAL(data, 24);
276 }
277 }
278
279 data_blob_free(&blob);
280
281 return smb2_request_destroy(req);
282}
283
284/*
285 sync create request
286*/
287NTSTATUS smb2_create(struct smb2_tree *tree, TALLOC_CTX *mem_ctx, struct smb2_create *io)
288{
289 struct smb2_request *req = smb2_create_send(tree, io);
290 return smb2_create_recv(req, mem_ctx, io);
291}
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