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smbd: check for previous versions in check_any_access_fsp()
[Samba.git] / libcli / smb / smb1cli_trans.c
blob99021ce2b47f91506afcd2d9700e45f2c0eb8d90
1 /*
2 Unix SMB/CIFS implementation.
3 client transaction calls
4 Copyright (C) Andrew Tridgell 1994-1998
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
26 struct trans_recvblob {
27 uint8_t *data;
28 uint32_t max, total, received;
29 };
30
31 struct smb1cli_trans_state {
32 struct smbXcli_conn *conn;
33 struct tevent_context *ev;
34 uint8_t cmd;
35 uint8_t additional_flags;
36 uint8_t clear_flags;
37 uint16_t additional_flags2;
38 uint16_t clear_flags2;
39 uint32_t timeout_msec;
40 uint16_t mid;
41 uint32_t pid;
42 struct smbXcli_tcon *tcon;
43 struct smbXcli_session *session;
44 const char *pipe_name;
45 uint8_t *pipe_name_conv;
46 size_t pipe_name_conv_len;
47 uint16_t fid;
48 uint16_t function;
49 int flags;
50 uint16_t *setup;
51 uint8_t num_setup, max_setup;
52 uint8_t *param;
53 uint32_t num_param, param_sent;
54 uint8_t *data;
55 uint32_t num_data, data_sent;
56
57 uint8_t num_rsetup;
58 uint16_t *rsetup;
59 struct trans_recvblob rparam;
60 struct trans_recvblob rdata;
61 uint16_t recv_flags2;
62
63 struct iovec iov[6];
64 uint8_t pad[4];
65 uint8_t zero_pad[4];
66 uint16_t vwv[32];
67
68 NTSTATUS status;
69
70 struct tevent_req *primary_subreq;
71 };
72
73 static void smb1cli_trans_cleanup_primary(struct smb1cli_trans_state *state)
74 {
75 if (state->primary_subreq) {
76 smb1cli_req_set_mid(state->primary_subreq, 0);
77 smbXcli_req_unset_pending(state->primary_subreq);
78 TALLOC_FREE(state->primary_subreq);
79 }
80 }
81
82 static int smb1cli_trans_state_destructor(struct smb1cli_trans_state *state)
83 {
84 smb1cli_trans_cleanup_primary(state);
85 return 0;
86 }
87
88 static NTSTATUS smb1cli_pull_trans(uint8_t *inhdr,
89 uint8_t wct,
90 uint16_t *vwv,
91 uint32_t vwv_ofs,
92 uint32_t num_bytes,
93 uint8_t *bytes,
94 uint32_t bytes_ofs,
95 uint8_t smb_cmd, bool expect_first_reply,
96 uint8_t *pnum_setup, uint16_t **psetup,
97 uint32_t *ptotal_param, uint32_t *pnum_param,
98 uint32_t *pparam_disp, uint8_t **pparam,
99 uint32_t *ptotal_data, uint32_t *pnum_data,
100 uint32_t *pdata_disp, uint8_t **pdata)
101 {
102 uint32_t param_ofs, data_ofs;
103 uint8_t expected_num_setup;
104 uint32_t max_bytes = UINT32_MAX - bytes_ofs;
105 uint32_t bytes_end;
106
107 if (num_bytes > max_bytes) {
108 return NT_STATUS_INVALID_NETWORK_RESPONSE;
109 }
110
111 bytes_end = bytes_ofs + num_bytes;
112
113 if (expect_first_reply) {
114 if ((wct != 0) || (num_bytes != 0)) {
115 return NT_STATUS_INVALID_NETWORK_RESPONSE;
116 }
117 return NT_STATUS_OK;
118 }
119
120 switch (smb_cmd) {
121 case SMBtrans:
122 case SMBtrans2:
123 if (wct < 10) {
124 return NT_STATUS_INVALID_NETWORK_RESPONSE;
125 }
126 expected_num_setup = wct - 10;
127 *ptotal_param = SVAL(vwv + 0, 0);
128 *ptotal_data = SVAL(vwv + 1, 0);
129 *pnum_param = SVAL(vwv + 3, 0);
130 param_ofs = SVAL(vwv + 4, 0);
131 *pparam_disp = SVAL(vwv + 5, 0);
132 *pnum_data = SVAL(vwv + 6, 0);
133 data_ofs = SVAL(vwv + 7, 0);
134 *pdata_disp = SVAL(vwv + 8, 0);
135 *pnum_setup = CVAL(vwv + 9, 0);
136 if (expected_num_setup < (*pnum_setup)) {
137 return NT_STATUS_INVALID_NETWORK_RESPONSE;
138 }
139 *psetup = vwv + 10;
140
141 break;
142 case SMBnttrans:
143 if (wct < 18) {
144 return NT_STATUS_INVALID_NETWORK_RESPONSE;
145 }
146 expected_num_setup = wct - 18;
147 *ptotal_param = IVAL(vwv, 3);
148 *ptotal_data = IVAL(vwv, 7);
149 *pnum_param = IVAL(vwv, 11);
150 param_ofs = IVAL(vwv, 15);
151 *pparam_disp = IVAL(vwv, 19);
152 *pnum_data = IVAL(vwv, 23);
153 data_ofs = IVAL(vwv, 27);
154 *pdata_disp = IVAL(vwv, 31);
155 *pnum_setup = CVAL(vwv, 35);
156 if (expected_num_setup < (*pnum_setup)) {
157 return NT_STATUS_INVALID_NETWORK_RESPONSE;
158 }
159 *psetup = vwv + 18;
160 break;
161
162 default:
163 return NT_STATUS_INTERNAL_ERROR;
164 }
165
166 /*
167 * Check for buffer overflows. data_ofs needs to be checked against
168 * the incoming buffer length, data_disp against the total
169 * length. Likewise for param_ofs/param_disp.
170 */
171
172 if (smb_buffer_oob(bytes_end, param_ofs, *pnum_param)
173 || smb_buffer_oob(*ptotal_param, *pparam_disp, *pnum_param)
174 || smb_buffer_oob(bytes_end, data_ofs, *pnum_data)
175 || smb_buffer_oob(*ptotal_data, *pdata_disp, *pnum_data)) {
176 return NT_STATUS_INVALID_NETWORK_RESPONSE;
177 }
178
179 *pparam = (uint8_t *)inhdr + param_ofs;
180 *pdata = (uint8_t *)inhdr + data_ofs;
181
182 return NT_STATUS_OK;
183 }
184
185 static NTSTATUS smb1cli_trans_pull_blob(TALLOC_CTX *mem_ctx,
186 struct trans_recvblob *blob,
187 uint32_t total, uint32_t thistime,
188 uint8_t *buf, uint32_t displacement)
189 {
190 if (blob->data == NULL) {
191 if (total > blob->max) {
192 return NT_STATUS_INVALID_NETWORK_RESPONSE;
193 }
194 blob->total = total;
195 blob->data = talloc_array(mem_ctx, uint8_t, total);
196 if (blob->data == NULL) {
197 return NT_STATUS_NO_MEMORY;
198 }
199 }
200
201 if (total > blob->total) {
202 return NT_STATUS_INVALID_NETWORK_RESPONSE;
203 }
204
205 if (thistime) {
206 memcpy(blob->data + displacement, buf, thistime);
207 blob->received += thistime;
208 }
209
210 return NT_STATUS_OK;
211 }
212
213 static void smb1cli_trans_format(struct smb1cli_trans_state *state,
214 uint8_t *pwct,
215 int *piov_count)
216 {
217 uint8_t wct = 0;
218 struct iovec *iov = state->iov;
219 uint8_t *pad = state->pad;
220 uint16_t *vwv = state->vwv;
221 uint32_t param_offset;
222 uint32_t this_param = 0;
223 uint32_t param_pad;
224 uint32_t data_offset;
225 uint32_t this_data = 0;
226 uint32_t data_pad;
227 uint32_t useable_space;
228 uint8_t cmd;
229 uint32_t max_trans = smb1cli_conn_max_xmit(state->conn);
230
231 cmd = state->cmd;
232
233 if ((state->param_sent != 0) || (state->data_sent != 0)) {
234 /* The secondary commands are one after the primary ones */
235 cmd += 1;
236 }
237
238 param_offset = MIN_SMB_SIZE;
239
240 switch (cmd) {
241 case SMBtrans:
242 if (smbXcli_conn_use_unicode(state->conn)) {
243 pad[0] = 0;
244 iov[0].iov_base = (void *)pad;
245 iov[0].iov_len = 1;
246 param_offset += 1;
247 iov += 1;
248 }
249 iov[0].iov_base = (void *)state->pipe_name_conv;
250 iov[0].iov_len = state->pipe_name_conv_len;
251 wct = 14 + state->num_setup;
252 param_offset += iov[0].iov_len;
253 iov += 1;
254 break;
255 case SMBtrans2:
256 pad[0] = 0;
257 pad[1] = 'D'; /* Copy this from "old" 3.0 behaviour */
258 pad[2] = ' ';
259 iov[0].iov_base = (void *)pad;
260 iov[0].iov_len = 3;
261 wct = 14 + state->num_setup;
262 param_offset += 3;
263 iov += 1;
264 break;
265 case SMBtranss:
266 wct = 8;
267 break;
268 case SMBtranss2:
269 wct = 9;
270 break;
271 case SMBnttrans:
272 wct = 19 + state->num_setup;
273 break;
274 case SMBnttranss:
275 wct = 18;
276 break;
277 }
278
279 param_offset += wct * sizeof(uint16_t);
280 useable_space = max_trans - param_offset;
281
282 param_pad = param_offset % 4;
283 if (param_pad > 0) {
284 param_pad = MIN(param_pad, useable_space);
285 iov[0].iov_base = (void *)state->zero_pad;
286 iov[0].iov_len = param_pad;
287 iov += 1;
288 param_offset += param_pad;
289 }
290 useable_space = max_trans - param_offset;
291
292 if (state->param_sent < state->num_param) {
293 this_param = MIN(state->num_param - state->param_sent,
294 useable_space);
295 iov[0].iov_base = (void *)(state->param + state->param_sent);
296 iov[0].iov_len = this_param;
297 iov += 1;
298 }
299
300 data_offset = param_offset + this_param;
301 useable_space = max_trans - data_offset;
302
303 data_pad = data_offset % 4;
304 if (data_pad > 0) {
305 data_pad = MIN(data_pad, useable_space);
306 iov[0].iov_base = (void *)state->zero_pad;
307 iov[0].iov_len = data_pad;
308 iov += 1;
309 data_offset += data_pad;
310 }
311 useable_space = max_trans - data_offset;
312
313 if (state->data_sent < state->num_data) {
314 this_data = MIN(state->num_data - state->data_sent,
315 useable_space);
316 iov[0].iov_base = (void *)(state->data + state->data_sent);
317 iov[0].iov_len = this_data;
318 iov += 1;
319 }
320
321 DEBUG(10, ("num_setup=%u, max_setup=%u, "
322 "param_total=%u, this_param=%u, max_param=%u, "
323 "data_total=%u, this_data=%u, max_data=%u, "
324 "param_offset=%u, param_pad=%u, param_disp=%u, "
325 "data_offset=%u, data_pad=%u, data_disp=%u\n",
326 (unsigned)state->num_setup, (unsigned)state->max_setup,
327 (unsigned)state->num_param, (unsigned)this_param,
328 (unsigned)state->rparam.max,
329 (unsigned)state->num_data, (unsigned)this_data,
330 (unsigned)state->rdata.max,
331 (unsigned)param_offset, (unsigned)param_pad,
332 (unsigned)state->param_sent,
333 (unsigned)data_offset, (unsigned)data_pad,
334 (unsigned)state->data_sent));
335
336 switch (cmd) {
337 case SMBtrans:
338 case SMBtrans2:
339 SSVAL(vwv + 0, 0, state->num_param);
340 SSVAL(vwv + 1, 0, state->num_data);
341 SSVAL(vwv + 2, 0, state->rparam.max);
342 SSVAL(vwv + 3, 0, state->rdata.max);
343 SCVAL(vwv + 4, 0, state->max_setup);
344 SCVAL(vwv + 4, 1, 0); /* reserved */
345 SSVAL(vwv + 5, 0, state->flags);
346 SIVAL(vwv + 6, 0, 0); /* timeout */
347 SSVAL(vwv + 8, 0, 0); /* reserved */
348 SSVAL(vwv + 9, 0, this_param);
349 SSVAL(vwv +10, 0, param_offset);
350 SSVAL(vwv +11, 0, this_data);
351 SSVAL(vwv +12, 0, data_offset);
352 SCVAL(vwv +13, 0, state->num_setup);
353 SCVAL(vwv +13, 1, 0); /* reserved */
354 if (state->num_setup > 0) {
355 memcpy(vwv + 14, state->setup,
356 sizeof(uint16_t) * state->num_setup);
357 }
358 break;
359 case SMBtranss:
360 case SMBtranss2:
361 SSVAL(vwv + 0, 0, state->num_param);
362 SSVAL(vwv + 1, 0, state->num_data);
363 SSVAL(vwv + 2, 0, this_param);
364 SSVAL(vwv + 3, 0, param_offset);
365 SSVAL(vwv + 4, 0, state->param_sent);
366 SSVAL(vwv + 5, 0, this_data);
367 SSVAL(vwv + 6, 0, data_offset);
368 SSVAL(vwv + 7, 0, state->data_sent);
369 if (cmd == SMBtranss2) {
370 SSVAL(vwv + 8, 0, state->fid);
371 }
372 break;
373 case SMBnttrans:
374 SCVAL(vwv + 0, 0, state->max_setup);
375 SSVAL(vwv + 0, 1, 0); /* reserved */
376 SIVAL(vwv + 1, 1, state->num_param);
377 SIVAL(vwv + 3, 1, state->num_data);
378 SIVAL(vwv + 5, 1, state->rparam.max);
379 SIVAL(vwv + 7, 1, state->rdata.max);
380 SIVAL(vwv + 9, 1, this_param);
381 SIVAL(vwv +11, 1, param_offset);
382 SIVAL(vwv +13, 1, this_data);
383 SIVAL(vwv +15, 1, data_offset);
384 SCVAL(vwv +17, 1, state->num_setup);
385 SSVAL(vwv +18, 0, state->function);
386 memcpy(vwv + 19, state->setup,
387 sizeof(uint16_t) * state->num_setup);
388 break;
389 case SMBnttranss:
390 SSVAL(vwv + 0, 0, 0); /* reserved */
391 SCVAL(vwv + 1, 0, 0); /* reserved */
392 SIVAL(vwv + 1, 1, state->num_param);
393 SIVAL(vwv + 3, 1, state->num_data);
394 SIVAL(vwv + 5, 1, this_param);
395 SIVAL(vwv + 7, 1, param_offset);
396 SIVAL(vwv + 9, 1, state->param_sent);
397 SIVAL(vwv +11, 1, this_data);
398 SIVAL(vwv +13, 1, data_offset);
399 SIVAL(vwv +15, 1, state->data_sent);
400 SCVAL(vwv +17, 1, 0); /* reserved */
401 break;
402 }
403
404 state->param_sent += this_param;
405 state->data_sent += this_data;
406
407 *pwct = wct;
408 *piov_count = iov - state->iov;
409 }
410
411 static bool smb1cli_trans_cancel(struct tevent_req *req);
412 static void smb1cli_trans_done(struct tevent_req *subreq);
413
414 struct tevent_req *smb1cli_trans_send(
415 TALLOC_CTX *mem_ctx, struct tevent_context *ev,
416 struct smbXcli_conn *conn, uint8_t cmd,
417 uint8_t additional_flags, uint8_t clear_flags,
418 uint16_t additional_flags2, uint16_t clear_flags2,
419 uint32_t timeout_msec,
420 uint32_t pid,
421 struct smbXcli_tcon *tcon,
422 struct smbXcli_session *session,
423 const char *pipe_name, uint16_t fid, uint16_t function, int flags,
424 uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
425 uint8_t *param, uint32_t num_param, uint32_t max_param,
426 uint8_t *data, uint32_t num_data, uint32_t max_data)
427 {
428 struct tevent_req *req, *subreq;
429 struct smb1cli_trans_state *state;
430 int iov_count;
431 uint8_t wct;
432 NTSTATUS status;
433 charset_t charset;
434
435 req = tevent_req_create(mem_ctx, &state,
436 struct smb1cli_trans_state);
437 if (req == NULL) {
438 return NULL;
439 }
440
441 if ((cmd == SMBtrans) || (cmd == SMBtrans2)) {
442 if ((num_param > 0xffff) || (max_param > 0xffff)
443 || (num_data > 0xffff) || (max_data > 0xffff)) {
444 DEBUG(3, ("Attempt to send invalid trans2 request "
445 "(setup %u, params %u/%u, data %u/%u)\n",
446 (unsigned)num_setup,
447 (unsigned)num_param, (unsigned)max_param,
448 (unsigned)num_data, (unsigned)max_data));
449 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER_MIX);
450 return tevent_req_post(req, ev);
451 }
452 }
453
454 /*
455 * The largest wct will be for nttrans (19+num_setup). Make sure we
456 * don't overflow state->vwv in smb1cli_trans_format.
457 */
458
459 if ((num_setup + 19) > ARRAY_SIZE(state->vwv)) {
460 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER_MIX);
461 return tevent_req_post(req, ev);
462 }
463
464 state->conn = conn;
465 state->ev = ev;
466 state->cmd = cmd;
467 state->additional_flags = additional_flags;
468 state->clear_flags = clear_flags;
469 state->additional_flags2 = additional_flags2;
470 state->clear_flags2 = clear_flags2;
471 state->timeout_msec = timeout_msec;
472 state->flags = flags;
473 state->num_rsetup = 0;
474 state->rsetup = NULL;
475 state->pid = pid;
476 state->tcon = tcon;
477 state->session = session;
478 ZERO_STRUCT(state->rparam);
479 ZERO_STRUCT(state->rdata);
480
481 if (smbXcli_conn_use_unicode(conn)) {
482 charset = CH_UTF16LE;
483 } else {
484 charset = CH_DOS;
485 }
486
487 if ((pipe_name != NULL)
488 && (!convert_string_talloc(state, CH_UNIX, charset,
489 pipe_name, strlen(pipe_name) + 1,
490 &state->pipe_name_conv,
491 &state->pipe_name_conv_len))) {
492 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
493 return tevent_req_post(req, ev);
494 }
495 state->fid = fid; /* trans2 */
496 state->function = function; /* nttrans */
497
498 state->setup = setup;
499 state->num_setup = num_setup;
500 state->max_setup = max_setup;
501
502 state->param = param;
503 state->num_param = num_param;
504 state->param_sent = 0;
505 state->rparam.max = max_param;
506
507 state->data = data;
508 state->num_data = num_data;
509 state->data_sent = 0;
510 state->rdata.max = max_data;
511
512 smb1cli_trans_format(state, &wct, &iov_count);
513
514 subreq = smb1cli_req_create(state, ev, conn, cmd,
515 state->additional_flags,
516 state->clear_flags,
517 state->additional_flags2,
518 state->clear_flags2,
519 state->timeout_msec,
520 state->pid,
521 state->tcon,
522 state->session,
523 wct, state->vwv,
524 iov_count, state->iov);
525 if (tevent_req_nomem(subreq, req)) {
526 return tevent_req_post(req, ev);
527 }
528 status = smb1cli_req_chain_submit(&subreq, 1);
529 if (tevent_req_nterror(req, status)) {
530 return tevent_req_post(req, state->ev);
531 }
532 tevent_req_set_callback(subreq, smb1cli_trans_done, req);
533
534 /*
535 * Now get the MID of the primary request
536 * and mark it as persistent. This means
537 * we will able to send and receive multiple
538 * SMB pdus using this MID in both directions
539 * (including correct SMB signing).
540 */
541 state->mid = smb1cli_req_mid(subreq);
542 smb1cli_req_set_mid(subreq, state->mid);
543 state->primary_subreq = subreq;
544 talloc_set_destructor(state, smb1cli_trans_state_destructor);
545
546 tevent_req_set_cancel_fn(req, smb1cli_trans_cancel);
547
548 return req;
549 }
550
551 static bool smb1cli_trans_cancel(struct tevent_req *req)
552 {
553 struct smb1cli_trans_state *state =
554 tevent_req_data(req,
555 struct smb1cli_trans_state);
556
557 if (state->primary_subreq == NULL) {
558 return false;
559 }
560
561 return tevent_req_cancel(state->primary_subreq);
562 }
563
564 static void smb1cli_trans_done2(struct tevent_req *subreq);
565
566 static void smb1cli_trans_done(struct tevent_req *subreq)
567 {
568 struct tevent_req *req =
569 tevent_req_callback_data(subreq,
570 struct tevent_req);
571 struct smb1cli_trans_state *state =
572 tevent_req_data(req,
573 struct smb1cli_trans_state);
574 NTSTATUS status;
575 bool sent_all;
576 struct iovec *recv_iov = NULL;
577 uint8_t *inhdr;
578 uint8_t wct;
579 uint16_t *vwv;
580 uint32_t vwv_ofs;
581 uint32_t num_bytes;
582 uint8_t *bytes;
583 uint32_t bytes_ofs;
584 uint8_t num_setup = 0;
585 uint16_t *setup = NULL;
586 uint32_t total_param = 0;
587 uint32_t num_param = 0;
588 uint32_t param_disp = 0;
589 uint32_t total_data = 0;
590 uint32_t num_data = 0;
591 uint32_t data_disp = 0;
592 uint8_t *param = NULL;
593 uint8_t *data = NULL;
594
595 status = smb1cli_req_recv(subreq, state,
596 &recv_iov,
597 &inhdr,
598 &wct,
599 &vwv,
600 &vwv_ofs,
601 &num_bytes,
602 &bytes,
603 &bytes_ofs,
604 NULL, /* pinbuf */
605 NULL, 0); /* expected */
606 /*
607 * Do not TALLOC_FREE(subreq) here, we might receive more than
608 * one response for the same mid.
609 */
610
611 /*
612 * We can receive something like STATUS_MORE_ENTRIES, so don't use
613 * !NT_STATUS_IS_OK(status) here.
614 */
615
616 if (NT_STATUS_IS_ERR(status)) {
617 goto fail;
618 }
619
620 if (recv_iov == NULL) {
621 status = NT_STATUS_INVALID_NETWORK_RESPONSE;
622 goto fail;
623 }
624 state->status = status;
625
626 sent_all = ((state->param_sent == state->num_param)
627 && (state->data_sent == state->num_data));
628
629 status = smb1cli_pull_trans(
630 inhdr, wct, vwv, vwv_ofs,
631 num_bytes, bytes, bytes_ofs,
632 state->cmd, !sent_all, &num_setup, &setup,
633 &total_param, &num_param, &param_disp, &param,
634 &total_data, &num_data, &data_disp, &data);
635
636 if (!NT_STATUS_IS_OK(status)) {
637 goto fail;
638 }
639
640 if (!sent_all) {
641 int iov_count;
642 struct tevent_req *subreq2;
643
644 smb1cli_trans_format(state, &wct, &iov_count);
645
646 subreq2 = smb1cli_req_create(state, state->ev, state->conn,
647 state->cmd + 1,
648 state->additional_flags,
649 state->clear_flags,
650 state->additional_flags2,
651 state->clear_flags2,
652 state->timeout_msec,
653 state->pid,
654 state->tcon,
655 state->session,
656 wct, state->vwv,
657 iov_count, state->iov);
658 if (tevent_req_nomem(subreq2, req)) {
659 return;
660 }
661 smb1cli_req_set_mid(subreq2, state->mid);
662
663 status = smb1cli_req_chain_submit(&subreq2, 1);
664
665 if (!NT_STATUS_IS_OK(status)) {
666 goto fail;
667 }
668 tevent_req_set_callback(subreq2, smb1cli_trans_done2, req);
669
670 return;
671 }
672
673 status = smb1cli_trans_pull_blob(
674 state, &state->rparam, total_param, num_param, param,
675 param_disp);
676
677 if (!NT_STATUS_IS_OK(status)) {
678 DEBUG(10, ("Pulling params failed: %s\n", nt_errstr(status)));
679 goto fail;
680 }
681
682 status = smb1cli_trans_pull_blob(
683 state, &state->rdata, total_data, num_data, data,
684 data_disp);
685
686 if (!NT_STATUS_IS_OK(status)) {
687 DEBUG(10, ("Pulling data failed: %s\n", nt_errstr(status)));
688 goto fail;
689 }
690
691 if ((state->rparam.total == state->rparam.received)
692 && (state->rdata.total == state->rdata.received)) {
693 state->recv_flags2 = SVAL(inhdr, HDR_FLG2);
694 smb1cli_trans_cleanup_primary(state);
695 tevent_req_done(req);
696 return;
697 }
698
699 TALLOC_FREE(recv_iov);
700
701 return;
702
703 fail:
704 smb1cli_trans_cleanup_primary(state);
705 tevent_req_nterror(req, status);
706 }
707
708 static void smb1cli_trans_done2(struct tevent_req *subreq2)
709 {
710 struct tevent_req *req =
711 tevent_req_callback_data(subreq2,
712 struct tevent_req);
713 struct smb1cli_trans_state *state =
714 tevent_req_data(req,
715 struct smb1cli_trans_state);
716 NTSTATUS status;
717 bool sent_all;
718 uint32_t seqnum;
719
720 /*
721 * First backup the seqnum of the secondary request
722 * and attach it to the primary request.
723 */
724 seqnum = smb1cli_req_seqnum(subreq2);
725 smb1cli_req_set_seqnum(state->primary_subreq, seqnum);
726
727 /* This was a one way request */
728 status = smb1cli_req_recv(subreq2, state,
729 NULL, /* recv_iov */
730 NULL, /* phdr */
731 NULL, /* pwct */
732 NULL, /* pvwv */
733 NULL, /* pvwv_offset */
734 NULL, /* pnum_bytes */
735 NULL, /* pbytes */
736 NULL, /* pbytes_offset */
737 NULL, /* pinbuf */
738 NULL, 0); /* expected */
739 TALLOC_FREE(subreq2);
740
741 if (!NT_STATUS_IS_OK(status)) {
742 goto fail;
743 }
744
745 sent_all = ((state->param_sent == state->num_param)
746 && (state->data_sent == state->num_data));
747
748 if (!sent_all) {
749 uint8_t wct;
750 int iov_count;
751
752 smb1cli_trans_format(state, &wct, &iov_count);
753
754 subreq2 = smb1cli_req_create(state, state->ev, state->conn,
755 state->cmd + 1,
756 state->additional_flags,
757 state->clear_flags,
758 state->additional_flags2,
759 state->clear_flags2,
760 state->timeout_msec,
761 state->pid,
762 state->tcon,
763 state->session,
764 wct, state->vwv,
765 iov_count, state->iov);
766 if (tevent_req_nomem(subreq2, req)) {
767 return;
768 }
769 smb1cli_req_set_mid(subreq2, state->mid);
770
771 status = smb1cli_req_chain_submit(&subreq2, 1);
772
773 if (!NT_STATUS_IS_OK(status)) {
774 goto fail;
775 }
776 tevent_req_set_callback(subreq2, smb1cli_trans_done2, req);
777 return;
778 }
779
780 return;
781
782 fail:
783 smb1cli_trans_cleanup_primary(state);
784 tevent_req_nterror(req, status);
785 }
786
787 NTSTATUS smb1cli_trans_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
788 uint16_t *recv_flags2,
789 uint16_t **setup, uint8_t min_setup,
790 uint8_t *num_setup,
791 uint8_t **param, uint32_t min_param,
792 uint32_t *num_param,
793 uint8_t **data, uint32_t min_data,
794 uint32_t *num_data)
795 {
796 struct smb1cli_trans_state *state =
797 tevent_req_data(req,
798 struct smb1cli_trans_state);
799 NTSTATUS status;
800
801 smb1cli_trans_cleanup_primary(state);
802
803 if (tevent_req_is_nterror(req, &status)) {
804 if (!NT_STATUS_IS_ERR(status)) {
805 status = NT_STATUS_INVALID_NETWORK_RESPONSE;
806 }
807 tevent_req_received(req);
808 return status;
809 }
810
811 if ((state->num_rsetup < min_setup)
812 || (state->rparam.total < min_param)
813 || (state->rdata.total < min_data)) {
814 tevent_req_received(req);
815 return NT_STATUS_INVALID_NETWORK_RESPONSE;
816 }
817
818 if (recv_flags2 != NULL) {
819 *recv_flags2 = state->recv_flags2;
820 }
821
822 if (setup != NULL) {
823 *setup = talloc_move(mem_ctx, &state->rsetup);
824 *num_setup = state->num_rsetup;
825 } else {
826 TALLOC_FREE(state->rsetup);
827 }
828
829 if (param != NULL) {
830 *param = talloc_move(mem_ctx, &state->rparam.data);
831 *num_param = state->rparam.total;
832 } else {
833 TALLOC_FREE(state->rparam.data);
834 }
835
836 if (data != NULL) {
837 *data = talloc_move(mem_ctx, &state->rdata.data);
838 *num_data = state->rdata.total;
839 } else {
840 TALLOC_FREE(state->rdata.data);
841 }
842
843 status = state->status;
844 tevent_req_received(req);
845 return status;
846 }
847
848 NTSTATUS smb1cli_trans(TALLOC_CTX *mem_ctx, struct smbXcli_conn *conn,
849 uint8_t trans_cmd,
850 uint8_t additional_flags, uint8_t clear_flags,
851 uint16_t additional_flags2, uint16_t clear_flags2,
852 uint32_t timeout_msec,
853 uint32_t pid,
854 struct smbXcli_tcon *tcon,
855 struct smbXcli_session *session,
856 const char *pipe_name, uint16_t fid, uint16_t function,
857 int flags,
858 uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
859 uint8_t *param, uint32_t num_param, uint32_t max_param,
860 uint8_t *data, uint32_t num_data, uint32_t max_data,
861 uint16_t *recv_flags2,
862 uint16_t **rsetup, uint8_t min_rsetup, uint8_t *num_rsetup,
863 uint8_t **rparam, uint32_t min_rparam, uint32_t *num_rparam,
864 uint8_t **rdata, uint32_t min_rdata, uint32_t *num_rdata)
865 {
866 TALLOC_CTX *frame = talloc_stackframe();
867 struct tevent_context *ev;
868 struct tevent_req *req;
869 NTSTATUS status = NT_STATUS_NO_MEMORY;
870
871 if (smbXcli_conn_has_async_calls(conn)) {
872 /*
873 * Can't use sync call while an async call is in flight
874 */
875 status = NT_STATUS_INVALID_PARAMETER_MIX;
876 goto fail;
877 }
878
879 ev = samba_tevent_context_init(frame);
880 if (ev == NULL) {
881 goto fail;
882 }
883
884 req = smb1cli_trans_send(frame, ev, conn, trans_cmd,
885 additional_flags, clear_flags,
886 additional_flags2, clear_flags2,
887 timeout_msec,
888 pid, tcon, session,
889 pipe_name, fid, function, flags,
890 setup, num_setup, max_setup,
891 param, num_param, max_param,
892 data, num_data, max_data);
893 if (req == NULL) {
894 goto fail;
895 }
896
897 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
898 goto fail;
899 }
900
901 status = smb1cli_trans_recv(req, mem_ctx, recv_flags2,
902 rsetup, min_rsetup, num_rsetup,
903 rparam, min_rparam, num_rparam,
904 rdata, min_rdata, num_rdata);
905 fail:
906 TALLOC_FREE(frame);
907 return status;
908 }
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