source: branches/samba-3.5.x/source4/smb_server/smb2/receive.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 15 years ago

Samba 3.5.0: Initial import
File size: 18.9 KB
Line 
1/*
2 Unix SMB2 implementation.
3
4 Copyright (C) Andrew Tridgell 2005
5 Copyright (C) Stefan Metzmacher 2005
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
19*/
20
21#include "includes.h"
22#include "system/time.h"
23#include "libcli/smb2/smb2.h"
24#include "libcli/smb2/smb2_calls.h"
25#include "smb_server/smb_server.h"
26#include "smb_server/smb2/smb2_server.h"
27#include "smbd/service_stream.h"
28#include "lib/stream/packet.h"
29#include "ntvfs/ntvfs.h"
30#include "param/param.h"
31#include "auth/auth.h"
32
33
34/* fill in the bufinfo */
35void smb2srv_setup_bufinfo(struct smb2srv_request *req)
36{
37 req->in.bufinfo.mem_ctx = req;
38 req->in.bufinfo.flags = BUFINFO_FLAG_UNICODE | BUFINFO_FLAG_SMB2;
39 req->in.bufinfo.align_base = req->in.buffer;
40 if (req->in.dynamic) {
41 req->in.bufinfo.data = req->in.dynamic;
42 req->in.bufinfo.data_size = req->in.body_size - req->in.body_fixed;
43 } else {
44 req->in.bufinfo.data = NULL;
45 req->in.bufinfo.data_size = 0;
46 }
47}
48
49static int smb2srv_request_destructor(struct smb2srv_request *req)
50{
51 DLIST_REMOVE(req->smb_conn->requests2.list, req);
52 if (req->pending_id) {
53 idr_remove(req->smb_conn->requests2.idtree_req, req->pending_id);
54 }
55 return 0;
56}
57
58static int smb2srv_request_deny_destructor(struct smb2srv_request *req)
59{
60 return -1;
61}
62
63struct smb2srv_request *smb2srv_init_request(struct smbsrv_connection *smb_conn)
64{
65 struct smb2srv_request *req;
66
67 req = talloc_zero(smb_conn, struct smb2srv_request);
68 if (!req) return NULL;
69
70 req->smb_conn = smb_conn;
71
72 talloc_set_destructor(req, smb2srv_request_destructor);
73
74 return req;
75}
76
77NTSTATUS smb2srv_setup_reply(struct smb2srv_request *req, uint16_t body_fixed_size,
78 bool body_dynamic_present, uint32_t body_dynamic_size)
79{
80 uint32_t flags = SMB2_HDR_FLAG_REDIRECT;
81 uint32_t pid = IVAL(req->in.hdr, SMB2_HDR_PID);
82 uint32_t tid = IVAL(req->in.hdr, SMB2_HDR_TID);
83
84 if (req->pending_id) {
85 flags |= SMB2_HDR_FLAG_ASYNC;
86 pid = req->pending_id;
87 tid = 0;
88 }
89
90 if (body_dynamic_present) {
91 if (body_dynamic_size == 0) {
92 body_dynamic_size = 1;
93 }
94 } else {
95 body_dynamic_size = 0;
96 }
97
98 req->out.size = SMB2_HDR_BODY+NBT_HDR_SIZE+body_fixed_size;
99
100 req->out.allocated = req->out.size + body_dynamic_size;
101 req->out.buffer = talloc_array(req, uint8_t,
102 req->out.allocated);
103 NT_STATUS_HAVE_NO_MEMORY(req->out.buffer);
104
105 req->out.hdr = req->out.buffer + NBT_HDR_SIZE;
106 req->out.body = req->out.hdr + SMB2_HDR_BODY;
107 req->out.body_fixed = body_fixed_size;
108 req->out.body_size = body_fixed_size;
109 req->out.dynamic = (body_dynamic_size ? req->out.body + body_fixed_size : NULL);
110
111 SIVAL(req->out.hdr, 0, SMB2_MAGIC);
112 SSVAL(req->out.hdr, SMB2_HDR_LENGTH, SMB2_HDR_BODY);
113 SSVAL(req->out.hdr, SMB2_HDR_EPOCH, 0);
114 SIVAL(req->out.hdr, SMB2_HDR_STATUS, NT_STATUS_V(req->status));
115 SSVAL(req->out.hdr, SMB2_HDR_OPCODE, SVAL(req->in.hdr, SMB2_HDR_OPCODE));
116 SSVAL(req->out.hdr, SMB2_HDR_CREDIT, 0x0001);
117 SIVAL(req->out.hdr, SMB2_HDR_FLAGS, flags);
118 SIVAL(req->out.hdr, SMB2_HDR_NEXT_COMMAND, 0);
119 SBVAL(req->out.hdr, SMB2_HDR_MESSAGE_ID, req->seqnum);
120 SIVAL(req->out.hdr, SMB2_HDR_PID, pid);
121 SIVAL(req->out.hdr, SMB2_HDR_TID, tid);
122 SBVAL(req->out.hdr, SMB2_HDR_SESSION_ID, BVAL(req->in.hdr, SMB2_HDR_SESSION_ID));
123 memset(req->out.hdr+SMB2_HDR_SIGNATURE, 0, 16);
124
125 /* set the length of the fixed body part and +1 if there's a dynamic part also */
126 SSVAL(req->out.body, 0, body_fixed_size + (body_dynamic_size?1:0));
127
128 /*
129 * if we have a dynamic part, make sure the first byte
130 * which is always be part of the packet is initialized
131 */
132 if (body_dynamic_size) {
133 req->out.size += 1;
134 SCVAL(req->out.dynamic, 0, 0);
135 }
136
137 return NT_STATUS_OK;
138}
139
140static NTSTATUS smb2srv_reply(struct smb2srv_request *req);
141
142static void smb2srv_chain_reply(struct smb2srv_request *p_req)
143{
144 NTSTATUS status;
145 struct smb2srv_request *req;
146 uint32_t chain_offset;
147 uint32_t protocol_version;
148 uint16_t buffer_code;
149 uint32_t dynamic_size;
150 uint32_t flags;
151 uint32_t last_hdr_offset;
152
153 last_hdr_offset = p_req->in.hdr - p_req->in.buffer;
154
155 chain_offset = p_req->chain_offset;
156 p_req->chain_offset = 0;
157
158 if (p_req->in.size < (last_hdr_offset + chain_offset + SMB2_MIN_SIZE_NO_BODY)) {
159 DEBUG(2,("Invalid SMB2 chained packet at offset 0x%X from last hdr 0x%X\n",
160 chain_offset, last_hdr_offset));
161 smbsrv_terminate_connection(p_req->smb_conn, "Invalid SMB2 chained packet");
162 return;
163 }
164
165 protocol_version = IVAL(p_req->in.buffer, last_hdr_offset + chain_offset);
166 if (protocol_version != SMB2_MAGIC) {
167 DEBUG(2,("Invalid SMB chained packet: protocol prefix: 0x%08X\n",
168 protocol_version));
169 smbsrv_terminate_connection(p_req->smb_conn, "NON-SMB2 chained packet");
170 return;
171 }
172
173 req = smb2srv_init_request(p_req->smb_conn);
174 if (!req) {
175 smbsrv_terminate_connection(p_req->smb_conn, "SMB2 chained packet - no memory");
176 return;
177 }
178
179 req->in.buffer = talloc_steal(req, p_req->in.buffer);
180 req->in.size = p_req->in.size;
181 req->request_time = p_req->request_time;
182 req->in.allocated = req->in.size;
183
184 req->in.hdr = req->in.buffer+ last_hdr_offset + chain_offset;
185 req->in.body = req->in.hdr + SMB2_HDR_BODY;
186 req->in.body_size = req->in.size - (last_hdr_offset+ chain_offset + SMB2_HDR_BODY);
187 req->in.dynamic = NULL;
188
189 req->seqnum = BVAL(req->in.hdr, SMB2_HDR_MESSAGE_ID);
190
191 if (req->in.body_size < 2) {
192 /* error handling for this is different for negprot to
193 other packet types */
194 uint16_t opcode = SVAL(req->in.hdr, SMB2_HDR_OPCODE);
195 if (opcode == SMB2_OP_NEGPROT) {
196 smbsrv_terminate_connection(req->smb_conn, "Bad body size in SMB2 negprot");
197 } else {
198 smb2srv_send_error(req, NT_STATUS_INVALID_PARAMETER);
199 }
200 }
201
202 buffer_code = SVAL(req->in.body, 0);
203 req->in.body_fixed = (buffer_code & ~1);
204 dynamic_size = req->in.body_size - req->in.body_fixed;
205
206 if (dynamic_size != 0 && (buffer_code & 1)) {
207 req->in.dynamic = req->in.body + req->in.body_fixed;
208 if (smb2_oob(&req->in, req->in.dynamic, dynamic_size)) {
209 DEBUG(1,("SMB2 chained request invalid dynamic size 0x%x\n",
210 dynamic_size));
211 smb2srv_send_error(req, NT_STATUS_INVALID_PARAMETER);
212 return;
213 }
214 }
215
216 smb2srv_setup_bufinfo(req);
217
218 flags = IVAL(req->in.hdr, SMB2_HDR_FLAGS);
219 if (flags & SMB2_HDR_FLAG_CHAINED) {
220 if (p_req->chained_file_handle) {
221 memcpy(req->_chained_file_handle,
222 p_req->_chained_file_handle,
223 sizeof(req->_chained_file_handle));
224 req->chained_file_handle = req->_chained_file_handle;
225 }
226 req->chain_status = p_req->chain_status;
227 }
228
229 /*
230 * TODO: - make sure the length field is 64
231 * - make sure it's a request
232 */
233
234 status = smb2srv_reply(req);
235 if (!NT_STATUS_IS_OK(status)) {
236 smbsrv_terminate_connection(req->smb_conn, nt_errstr(status));
237 talloc_free(req);
238 return;
239 }
240}
241
242void smb2srv_send_reply(struct smb2srv_request *req)
243{
244 DATA_BLOB blob;
245 NTSTATUS status;
246
247 if (req->smb_conn->connection->event.fde == NULL) {
248 /* the socket has been destroyed - no point trying to send a reply! */
249 talloc_free(req);
250 return;
251 }
252
253 if (req->out.size > NBT_HDR_SIZE) {
254 _smb2_setlen(req->out.buffer, req->out.size - NBT_HDR_SIZE);
255 }
256
257 /* if signing is active on the session then sign the packet */
258 if (req->is_signed) {
259 status = smb2_sign_message(&req->out,
260 req->session->session_info->session_key);
261 if (!NT_STATUS_IS_OK(status)) {
262 smbsrv_terminate_connection(req->smb_conn, nt_errstr(status));
263 return;
264 }
265 }
266
267
268 blob = data_blob_const(req->out.buffer, req->out.size);
269 status = packet_send(req->smb_conn->packet, blob);
270 if (!NT_STATUS_IS_OK(status)) {
271 smbsrv_terminate_connection(req->smb_conn, nt_errstr(status));
272 }
273 if (req->chain_offset) {
274 smb2srv_chain_reply(req);
275 return;
276 }
277 talloc_free(req);
278}
279
280void smb2srv_send_error(struct smb2srv_request *req, NTSTATUS error)
281{
282 NTSTATUS status;
283
284 if (req->smb_conn->connection->event.fde == NULL) {
285 /* the socket has been destroyed - no point trying to send an error! */
286 talloc_free(req);
287 return;
288 }
289
290 status = smb2srv_setup_reply(req, 8, true, 0);
291 if (!NT_STATUS_IS_OK(status)) {
292 smbsrv_terminate_connection(req->smb_conn, nt_errstr(status));
293 talloc_free(req);
294 return;
295 }
296
297 SIVAL(req->out.hdr, SMB2_HDR_STATUS, NT_STATUS_V(error));
298
299 SSVAL(req->out.body, 0x02, 0);
300 SIVAL(req->out.body, 0x04, 0);
301
302 req->chain_status = NT_STATUS_INVALID_PARAMETER;
303
304 smb2srv_send_reply(req);
305}
306
307static NTSTATUS smb2srv_reply(struct smb2srv_request *req)
308{
309 uint16_t opcode;
310 uint32_t tid;
311 uint64_t uid;
312 uint32_t flags;
313
314 if (SVAL(req->in.hdr, SMB2_HDR_LENGTH) != SMB2_HDR_BODY) {
315 smbsrv_terminate_connection(req->smb_conn, "Invalid SMB2 header length");
316 return NT_STATUS_INVALID_PARAMETER;
317 }
318 opcode = SVAL(req->in.hdr, SMB2_HDR_OPCODE);
319 req->chain_offset = IVAL(req->in.hdr, SMB2_HDR_NEXT_COMMAND);
320 req->seqnum = BVAL(req->in.hdr, SMB2_HDR_MESSAGE_ID);
321 tid = IVAL(req->in.hdr, SMB2_HDR_TID);
322 uid = BVAL(req->in.hdr, SMB2_HDR_SESSION_ID);
323 flags = IVAL(req->in.hdr, SMB2_HDR_FLAGS);
324
325 if (req->smb_conn->highest_smb2_seqnum != 0 &&
326 req->seqnum <= req->smb_conn->highest_smb2_seqnum) {
327 smbsrv_terminate_connection(req->smb_conn, "Invalid SMB2 sequence number");
328 return NT_STATUS_INVALID_PARAMETER;
329 }
330 req->smb_conn->highest_smb2_seqnum = req->seqnum;
331
332 req->session = smbsrv_session_find(req->smb_conn, uid, req->request_time);
333 req->tcon = smbsrv_smb2_tcon_find(req->session, tid, req->request_time);
334
335 errno = 0;
336
337 /* supporting signing is mandatory in SMB2, and is per-packet. So we
338 should check the signature on any incoming packet that is signed, and
339 should give a signed reply to any signed request */
340 if (flags & SMB2_HDR_FLAG_SIGNED) {
341 NTSTATUS status;
342
343 if (!req->session) goto nosession;
344
345 req->is_signed = true;
346 status = smb2_check_signature(&req->in,
347 req->session->session_info->session_key);
348 if (!NT_STATUS_IS_OK(status)) {
349 smb2srv_send_error(req, status);
350 return NT_STATUS_OK;
351 }
352 } else if (req->session && req->session->smb2_signing.active) {
353 /* we require signing and this request was not signed */
354 smb2srv_send_error(req, NT_STATUS_ACCESS_DENIED);
355 return NT_STATUS_OK;
356 }
357
358 if (!NT_STATUS_IS_OK(req->chain_status)) {
359 smb2srv_send_error(req, req->chain_status);
360 return NT_STATUS_OK;
361 }
362
363 switch (opcode) {
364 case SMB2_OP_NEGPROT:
365 smb2srv_negprot_recv(req);
366 return NT_STATUS_OK;
367 case SMB2_OP_SESSSETUP:
368 smb2srv_sesssetup_recv(req);
369 return NT_STATUS_OK;
370 case SMB2_OP_LOGOFF:
371 if (!req->session) goto nosession;
372 smb2srv_logoff_recv(req);
373 return NT_STATUS_OK;
374 case SMB2_OP_TCON:
375 if (!req->session) goto nosession;
376 smb2srv_tcon_recv(req);
377 return NT_STATUS_OK;
378 case SMB2_OP_TDIS:
379 if (!req->session) goto nosession;
380 if (!req->tcon) goto notcon;
381 smb2srv_tdis_recv(req);
382 return NT_STATUS_OK;
383 case SMB2_OP_CREATE:
384 if (!req->session) goto nosession;
385 if (!req->tcon) goto notcon;
386 smb2srv_create_recv(req);
387 return NT_STATUS_OK;
388 case SMB2_OP_CLOSE:
389 if (!req->session) goto nosession;
390 if (!req->tcon) goto notcon;
391 smb2srv_close_recv(req);
392 return NT_STATUS_OK;
393 case SMB2_OP_FLUSH:
394 if (!req->session) goto nosession;
395 if (!req->tcon) goto notcon;
396 smb2srv_flush_recv(req);
397 return NT_STATUS_OK;
398 case SMB2_OP_READ:
399 if (!req->session) goto nosession;
400 if (!req->tcon) goto notcon;
401 smb2srv_read_recv(req);
402 return NT_STATUS_OK;
403 case SMB2_OP_WRITE:
404 if (!req->session) goto nosession;
405 if (!req->tcon) goto notcon;
406 smb2srv_write_recv(req);
407 return NT_STATUS_OK;
408 case SMB2_OP_LOCK:
409 if (!req->session) goto nosession;
410 if (!req->tcon) goto notcon;
411 smb2srv_lock_recv(req);
412 return NT_STATUS_OK;
413 case SMB2_OP_IOCTL:
414 if (!req->session) goto nosession;
415 if (!req->tcon) goto notcon;
416 smb2srv_ioctl_recv(req);
417 return NT_STATUS_OK;
418 case SMB2_OP_CANCEL:
419 smb2srv_cancel_recv(req);
420 return NT_STATUS_OK;
421 case SMB2_OP_KEEPALIVE:
422 smb2srv_keepalive_recv(req);
423 return NT_STATUS_OK;
424 case SMB2_OP_FIND:
425 if (!req->session) goto nosession;
426 if (!req->tcon) goto notcon;
427 smb2srv_find_recv(req);
428 return NT_STATUS_OK;
429 case SMB2_OP_NOTIFY:
430 if (!req->session) goto nosession;
431 if (!req->tcon) goto notcon;
432 smb2srv_notify_recv(req);
433 return NT_STATUS_OK;
434 case SMB2_OP_GETINFO:
435 if (!req->session) goto nosession;
436 if (!req->tcon) goto notcon;
437 smb2srv_getinfo_recv(req);
438 return NT_STATUS_OK;
439 case SMB2_OP_SETINFO:
440 if (!req->session) goto nosession;
441 if (!req->tcon) goto notcon;
442 smb2srv_setinfo_recv(req);
443 return NT_STATUS_OK;
444 case SMB2_OP_BREAK:
445 if (!req->session) goto nosession;
446 if (!req->tcon) goto notcon;
447 smb2srv_break_recv(req);
448 return NT_STATUS_OK;
449 }
450
451 DEBUG(1,("Invalid SMB2 opcode: 0x%04X\n", opcode));
452 smbsrv_terminate_connection(req->smb_conn, "Invalid SMB2 opcode");
453 return NT_STATUS_OK;
454
455nosession:
456 smb2srv_send_error(req, NT_STATUS_USER_SESSION_DELETED);
457 return NT_STATUS_OK;
458notcon:
459 smb2srv_send_error(req, NT_STATUS_NETWORK_NAME_DELETED);
460 return NT_STATUS_OK;
461}
462
463NTSTATUS smbsrv_recv_smb2_request(void *private_data, DATA_BLOB blob)
464{
465 struct smbsrv_connection *smb_conn = talloc_get_type(private_data, struct smbsrv_connection);
466 struct smb2srv_request *req;
467 struct timeval cur_time = timeval_current();
468 uint32_t protocol_version;
469 uint16_t buffer_code;
470 uint32_t dynamic_size;
471 uint32_t flags;
472
473 smb_conn->statistics.last_request_time = cur_time;
474
475 /* see if its a special NBT packet */
476 if (CVAL(blob.data,0) != 0) {
477 DEBUG(2,("Special NBT packet on SMB2 connection"));
478 smbsrv_terminate_connection(smb_conn, "Special NBT packet on SMB2 connection");
479 return NT_STATUS_OK;
480 }
481
482 if (blob.length < (NBT_HDR_SIZE + SMB2_MIN_SIZE_NO_BODY)) {
483 DEBUG(2,("Invalid SMB2 packet length count %ld\n", (long)blob.length));
484 smbsrv_terminate_connection(smb_conn, "Invalid SMB2 packet");
485 return NT_STATUS_OK;
486 }
487
488 protocol_version = IVAL(blob.data, NBT_HDR_SIZE);
489 if (protocol_version != SMB2_MAGIC) {
490 DEBUG(2,("Invalid SMB packet: protocol prefix: 0x%08X\n",
491 protocol_version));
492 smbsrv_terminate_connection(smb_conn, "NON-SMB2 packet");
493 return NT_STATUS_OK;
494 }
495
496 req = smb2srv_init_request(smb_conn);
497 NT_STATUS_HAVE_NO_MEMORY(req);
498
499 req->in.buffer = talloc_steal(req, blob.data);
500 req->in.size = blob.length;
501 req->request_time = cur_time;
502 req->in.allocated = req->in.size;
503
504 req->in.hdr = req->in.buffer+ NBT_HDR_SIZE;
505 req->in.body = req->in.hdr + SMB2_HDR_BODY;
506 req->in.body_size = req->in.size - (SMB2_HDR_BODY+NBT_HDR_SIZE);
507 req->in.dynamic = NULL;
508
509 req->seqnum = BVAL(req->in.hdr, SMB2_HDR_MESSAGE_ID);
510
511 if (req->in.body_size < 2) {
512 /* error handling for this is different for negprot to
513 other packet types */
514 uint16_t opcode = SVAL(req->in.hdr, SMB2_HDR_OPCODE);
515 if (opcode == SMB2_OP_NEGPROT) {
516 smbsrv_terminate_connection(req->smb_conn, "Bad body size in SMB2 negprot");
517 return NT_STATUS_OK;
518 } else {
519 smb2srv_send_error(req, NT_STATUS_INVALID_PARAMETER);
520 return NT_STATUS_OK;
521 }
522 }
523
524 buffer_code = SVAL(req->in.body, 0);
525 req->in.body_fixed = (buffer_code & ~1);
526 dynamic_size = req->in.body_size - req->in.body_fixed;
527
528 if (dynamic_size != 0 && (buffer_code & 1)) {
529 req->in.dynamic = req->in.body + req->in.body_fixed;
530 if (smb2_oob(&req->in, req->in.dynamic, dynamic_size)) {
531 DEBUG(1,("SMB2 request invalid dynamic size 0x%x\n",
532 dynamic_size));
533 smb2srv_send_error(req, NT_STATUS_INVALID_PARAMETER);
534 return NT_STATUS_OK;
535 }
536 }
537
538 smb2srv_setup_bufinfo(req);
539
540 /*
541 * TODO: - make sure the length field is 64
542 * - make sure it's a request
543 */
544
545 flags = IVAL(req->in.hdr, SMB2_HDR_FLAGS);
546 /* the first request should never have the related flag set */
547 if (flags & SMB2_HDR_FLAG_CHAINED) {
548 req->chain_status = NT_STATUS_INVALID_PARAMETER;
549 }
550
551 return smb2srv_reply(req);
552}
553
554static NTSTATUS smb2srv_init_pending(struct smbsrv_connection *smb_conn)
555{
556 smb_conn->requests2.idtree_req = idr_init(smb_conn);
557 NT_STATUS_HAVE_NO_MEMORY(smb_conn->requests2.idtree_req);
558 smb_conn->requests2.idtree_limit = 0x00FFFFFF & (UINT32_MAX - 1);
559 smb_conn->requests2.list = NULL;
560
561 return NT_STATUS_OK;
562}
563
564NTSTATUS smb2srv_queue_pending(struct smb2srv_request *req)
565{
566 NTSTATUS status;
567 bool signing_used = false;
568 int id;
569
570 if (req->pending_id) {
571 return NT_STATUS_INTERNAL_ERROR;
572 }
573
574 id = idr_get_new_above(req->smb_conn->requests2.idtree_req, req,
575 1, req->smb_conn->requests2.idtree_limit);
576 if (id == -1) {
577 return NT_STATUS_INSUFFICIENT_RESOURCES;
578 }
579
580 DLIST_ADD_END(req->smb_conn->requests2.list, req, struct smb2srv_request *);
581 req->pending_id = id;
582
583 if (req->smb_conn->connection->event.fde == NULL) {
584 /* the socket has been destroyed - no point trying to send an error! */
585 return NT_STATUS_REMOTE_DISCONNECT;
586 }
587
588 talloc_set_destructor(req, smb2srv_request_deny_destructor);
589
590 status = smb2srv_setup_reply(req, 8, true, 0);
591 if (!NT_STATUS_IS_OK(status)) {
592 return status;
593 }
594
595 SIVAL(req->out.hdr, SMB2_HDR_STATUS, NT_STATUS_V(STATUS_PENDING));
596
597 SSVAL(req->out.body, 0x02, 0);
598 SIVAL(req->out.body, 0x04, 0);
599
600 /* if the real reply will be signed set the signed flags, but don't sign */
601 if (req->is_signed) {
602 SIVAL(req->out.hdr, SMB2_HDR_FLAGS, IVAL(req->out.hdr, SMB2_HDR_FLAGS) | SMB2_HDR_FLAG_SIGNED);
603 signing_used = req->is_signed;
604 req->is_signed = false;
605 }
606
607 smb2srv_send_reply(req);
608
609 req->is_signed = signing_used;
610
611 talloc_set_destructor(req, smb2srv_request_destructor);
612 return NT_STATUS_OK;
613}
614
615void smb2srv_cancel_recv(struct smb2srv_request *req)
616{
617 uint32_t pending_id;
618 uint32_t flags;
619 void *p;
620 struct smb2srv_request *r;
621
622 if (!req->session) goto done;
623
624 flags = IVAL(req->in.hdr, SMB2_HDR_FLAGS);
625 pending_id = IVAL(req->in.hdr, SMB2_HDR_PID);
626
627 if (!(flags & SMB2_HDR_FLAG_ASYNC)) {
628 /* TODO: what to do here? */
629 goto done;
630 }
631
632 p = idr_find(req->smb_conn->requests2.idtree_req, pending_id);
633 if (!p) goto done;
634
635 r = talloc_get_type(p, struct smb2srv_request);
636 if (!r) goto done;
637
638 if (!r->ntvfs) goto done;
639
640 ntvfs_cancel(r->ntvfs);
641
642done:
643 /* we never generate a reply for a SMB2 Cancel */
644 talloc_free(req);
645}
646
647/*
648 * init the SMB2 protocol related stuff
649 */
650NTSTATUS smbsrv_init_smb2_connection(struct smbsrv_connection *smb_conn)
651{
652 NTSTATUS status;
653
654 /* now initialise a few default values associated with this smb socket */
655 smb_conn->negotiate.max_send = 0xFFFF;
656
657 /* this is the size that w2k uses, and it appears to be important for
658 good performance */
659 smb_conn->negotiate.max_recv = lp_max_xmit(smb_conn->lp_ctx);
660
661 smb_conn->negotiate.zone_offset = get_time_zone(time(NULL));
662
663 smb_conn->config.security = SEC_USER;
664 smb_conn->config.nt_status_support = true;
665
666 status = smbsrv_init_sessions(smb_conn, UINT64_MAX);
667 NT_STATUS_NOT_OK_RETURN(status);
668
669 status = smb2srv_init_pending(smb_conn);
670 NT_STATUS_NOT_OK_RETURN(status);
671
672 return NT_STATUS_OK;
673
674}
Note: See TracBrowser for help on using the repository browser.