source: vendor/current/libcli/smb/smb2cli_tcon.c

Last change on this file was 988, checked in by Silvan Scherrer, 9 years ago

Samba Server: update vendor to version 4.4.3
File size: 8.4 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 smb2 lib
4 Copyright (C) Volker Lendecke 2011
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
18*/
19
20#include "includes.h"
21#include "system/network.h"
22#include "../lib/util/tevent_ntstatus.h"
23#include "../libcli/smb/smb_common.h"
24#include "../libcli/smb/smbXcli_base.h"
25
26struct smb2cli_tcon_state {
27 struct tevent_context *ev;
28 struct smbXcli_conn *conn;
29 uint32_t timeout_msec;
30 struct smbXcli_session *session;
31 struct smbXcli_tcon *tcon;
32 uint8_t fixed[8];
33 uint8_t dyn_pad[1];
34};
35
36static void smb2cli_tcon_done(struct tevent_req *subreq);
37
38struct tevent_req *smb2cli_tcon_send(TALLOC_CTX *mem_ctx,
39 struct tevent_context *ev,
40 struct smbXcli_conn *conn,
41 uint32_t timeout_msec,
42 struct smbXcli_session *session,
43 struct smbXcli_tcon *tcon,
44 uint16_t flags,
45 const char *unc)
46{
47 struct tevent_req *req, *subreq;
48 struct smb2cli_tcon_state *state;
49 uint8_t *fixed;
50 uint8_t *dyn;
51 size_t dyn_len;
52 uint32_t additional_flags = 0;
53 uint32_t clear_flags = 0;
54
55 req = tevent_req_create(mem_ctx, &state, struct smb2cli_tcon_state);
56 if (req == NULL) {
57 return NULL;
58 }
59 state->ev = ev;
60 state->conn = conn;
61 state->timeout_msec = timeout_msec;
62 state->session = session;
63 state->tcon = tcon;
64
65 if (!convert_string_talloc(state, CH_UNIX, CH_UTF16,
66 unc, strlen(unc),
67 &dyn, &dyn_len)) {
68 tevent_req_oom(req);
69 return tevent_req_post(req, ev);
70 }
71
72 if (strlen(unc) == 0) {
73 TALLOC_FREE(dyn);
74 dyn_len = 0;
75 }
76
77 fixed = state->fixed;
78 SSVAL(fixed, 0, 9);
79 if (smbXcli_conn_protocol(conn) >= PROTOCOL_SMB3_10) {
80 SSVAL(fixed, 2, flags);
81 } else {
82 SSVAL(fixed, 2, 0); /* Reserved */
83 }
84 SSVAL(fixed, 4, SMB2_HDR_BODY + 8);
85 SSVAL(fixed, 6, dyn_len);
86
87 if (dyn_len == 0) {
88 dyn = state->dyn_pad;
89 dyn_len = sizeof(state->dyn_pad);
90 }
91
92 if (smbXcli_session_is_authenticated(state->session)) {
93 additional_flags |= SMB2_HDR_FLAG_SIGNED;
94 }
95
96 subreq = smb2cli_req_send(state, ev, conn, SMB2_OP_TCON,
97 additional_flags, clear_flags,
98 timeout_msec,
99 NULL, /* tcon */
100 session,
101 state->fixed, sizeof(state->fixed),
102 dyn, dyn_len,
103 0); /* max_dyn_len */
104 if (tevent_req_nomem(subreq, req)) {
105 return tevent_req_post(req, ev);
106 }
107 tevent_req_set_callback(subreq, smb2cli_tcon_done, req);
108
109 return req;
110}
111
112static void smb2cli_tcon_validate(struct tevent_req *subreq);
113
114static void smb2cli_tcon_done(struct tevent_req *subreq)
115{
116 struct tevent_req *req = tevent_req_callback_data(
117 subreq, struct tevent_req);
118 struct smb2cli_tcon_state *state = tevent_req_data(
119 req, struct smb2cli_tcon_state);
120 NTSTATUS status;
121 struct iovec *iov;
122 uint8_t *body;
123 uint32_t tcon_id;
124 uint8_t share_type;
125 uint32_t share_flags;
126 uint32_t share_capabilities;
127 uint32_t maximal_access;
128 static const struct smb2cli_req_expected_response expected[] = {
129 {
130 .status = NT_STATUS_OK,
131 .body_size = 0x10
132 }
133 };
134
135 status = smb2cli_req_recv(subreq, state, &iov,
136 expected, ARRAY_SIZE(expected));
137 TALLOC_FREE(subreq);
138 if (!NT_STATUS_IS_OK(status)) {
139 tevent_req_nterror(req, status);
140 return;
141 }
142
143 tcon_id = IVAL(iov[0].iov_base, SMB2_HDR_TID);
144
145 body = (uint8_t *)iov[1].iov_base;
146 share_type = CVAL(body, 0x02);
147 share_flags = IVAL(body, 0x04);
148 share_capabilities = IVAL(body, 0x08);
149 maximal_access = IVAL(body, 0x0C);
150
151 smb2cli_tcon_set_values(state->tcon,
152 state->session,
153 tcon_id,
154 share_type,
155 share_flags,
156 share_capabilities,
157 maximal_access);
158
159 if (!smbXcli_session_is_authenticated(state->session)) {
160 tevent_req_done(req);
161 return;
162 }
163
164 if (smbXcli_conn_protocol(state->conn) >= PROTOCOL_SMB3_10) {
165 tevent_req_done(req);
166 return;
167 }
168
169 subreq = smb2cli_validate_negotiate_info_send(state, state->ev,
170 state->conn,
171 state->timeout_msec,
172 state->session,
173 state->tcon);
174 if (tevent_req_nomem(subreq, req)) {
175 return;
176 }
177 tevent_req_set_callback(subreq, smb2cli_tcon_validate, req);
178}
179
180static void smb2cli_tcon_validate(struct tevent_req *subreq)
181{
182 struct tevent_req *req = tevent_req_callback_data(
183 subreq, struct tevent_req);
184 struct smb2cli_tcon_state *state = tevent_req_data(
185 req, struct smb2cli_tcon_state);
186 NTSTATUS status;
187
188 status = smb2cli_validate_negotiate_info_recv(subreq);
189 TALLOC_FREE(subreq);
190 if (!NT_STATUS_IS_OK(status)) {
191 smb2cli_tcon_set_values(state->tcon, NULL,
192 UINT32_MAX, 0, 0, 0, 0);
193 tevent_req_nterror(req, status);
194 return;
195 }
196
197 tevent_req_done(req);
198}
199
200NTSTATUS smb2cli_tcon_recv(struct tevent_req *req)
201{
202 return tevent_req_simple_recv_ntstatus(req);
203}
204
205NTSTATUS smb2cli_tcon(struct smbXcli_conn *conn,
206 uint32_t timeout_msec,
207 struct smbXcli_session *session,
208 struct smbXcli_tcon *tcon,
209 uint16_t flags,
210 const char *unc)
211{
212 TALLOC_CTX *frame = talloc_stackframe();
213 struct tevent_context *ev;
214 struct tevent_req *req;
215 NTSTATUS status = NT_STATUS_NO_MEMORY;
216
217 if (smbXcli_conn_has_async_calls(conn)) {
218 /*
219 * Can't use sync call while an async call is in flight
220 */
221 status = NT_STATUS_INVALID_PARAMETER;
222 goto fail;
223 }
224 ev = samba_tevent_context_init(frame);
225 if (ev == NULL) {
226 goto fail;
227 }
228 req = smb2cli_tcon_send(frame, ev, conn,
229 timeout_msec, session, tcon,
230 flags, unc);
231 if (req == NULL) {
232 goto fail;
233 }
234 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
235 goto fail;
236 }
237 status = smb2cli_tcon_recv(req);
238 fail:
239 TALLOC_FREE(frame);
240 return status;
241}
242
243struct smb2cli_tdis_state {
244 struct smbXcli_tcon *tcon;
245 uint8_t fixed[4];
246};
247
248static void smb2cli_tdis_done(struct tevent_req *subreq);
249
250struct tevent_req *smb2cli_tdis_send(TALLOC_CTX *mem_ctx,
251 struct tevent_context *ev,
252 struct smbXcli_conn *conn,
253 uint32_t timeout_msec,
254 struct smbXcli_session *session,
255 struct smbXcli_tcon *tcon)
256{
257 struct tevent_req *req, *subreq;
258 struct smb2cli_tdis_state *state;
259
260 req = tevent_req_create(mem_ctx, &state,
261 struct smb2cli_tdis_state);
262 if (req == NULL) {
263 return NULL;
264 }
265 state->tcon = tcon;
266
267 SSVAL(state->fixed, 0, 4);
268
269 subreq = smb2cli_req_send(state, ev, conn, SMB2_OP_TDIS,
270 0, 0, /* flags */
271 timeout_msec,
272 tcon, session,
273 state->fixed, sizeof(state->fixed),
274 NULL, 0, /* dyn* */
275 0); /* max_dyn_len */
276 if (tevent_req_nomem(subreq, req)) {
277 return tevent_req_post(req, ev);
278 }
279 tevent_req_set_callback(subreq, smb2cli_tdis_done, req);
280 return req;
281}
282
283static void smb2cli_tdis_done(struct tevent_req *subreq)
284{
285 struct tevent_req *req =
286 tevent_req_callback_data(subreq,
287 struct tevent_req);
288 struct smb2cli_tdis_state *state =
289 tevent_req_data(req,
290 struct smb2cli_tdis_state);
291 NTSTATUS status;
292 static const struct smb2cli_req_expected_response expected[] = {
293 {
294 .status = NT_STATUS_OK,
295 .body_size = 0x04
296 }
297 };
298
299 status = smb2cli_req_recv(subreq, NULL, NULL,
300 expected, ARRAY_SIZE(expected));
301 TALLOC_FREE(subreq);
302 if (tevent_req_nterror(req, status)) {
303 return;
304 }
305 smb2cli_tcon_set_values(state->tcon, NULL,
306 UINT32_MAX, 0, 0, 0, 0);
307 tevent_req_done(req);
308}
309
310NTSTATUS smb2cli_tdis_recv(struct tevent_req *req)
311{
312 return tevent_req_simple_recv_ntstatus(req);
313}
314
315NTSTATUS smb2cli_tdis(struct smbXcli_conn *conn,
316 uint32_t timeout_msec,
317 struct smbXcli_session *session,
318 struct smbXcli_tcon *tcon)
319{
320 TALLOC_CTX *frame = talloc_stackframe();
321 struct tevent_context *ev;
322 struct tevent_req *req;
323 NTSTATUS status = NT_STATUS_NO_MEMORY;
324
325 if (smbXcli_conn_has_async_calls(conn)) {
326 /*
327 * Can't use sync call while an async call is in flight
328 */
329 status = NT_STATUS_INVALID_PARAMETER;
330 goto fail;
331 }
332 ev = samba_tevent_context_init(frame);
333 if (ev == NULL) {
334 goto fail;
335 }
336 req = smb2cli_tdis_send(frame, ev, conn,
337 timeout_msec, session, tcon);
338 if (req == NULL) {
339 goto fail;
340 }
341 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
342 goto fail;
343 }
344 status = smb2cli_tdis_recv(req);
345 fail:
346 TALLOC_FREE(frame);
347 return status;
348}
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