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idl: rebuild drsuapi.idl
[Samba/aatanasov.git] / source4 / smb_server / smb2 / receive.c
blob5ac01dcb7c9f2740e4b3b0e8367771c14edb4ae5
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/service_smb_proto.h"
27 #include "smb_server/smb2/smb2_server.h"
28 #include "smbd/service_stream.h"
29 #include "lib/stream/packet.h"
30 #include "ntvfs/ntvfs.h"
31 #include "param/param.h"
32 #include "auth/gensec/gensec.h"
33 #include "auth/auth.h"
34
35
36 /* fill in the bufinfo */
37 void smb2srv_setup_bufinfo(struct smb2srv_request *req)
38 {
39 req->in.bufinfo.mem_ctx = req;
40 req->in.bufinfo.flags = BUFINFO_FLAG_UNICODE | BUFINFO_FLAG_SMB2;
41 req->in.bufinfo.align_base = req->in.buffer;
42 if (req->in.dynamic) {
43 req->in.bufinfo.data = req->in.dynamic;
44 req->in.bufinfo.data_size = req->in.body_size - req->in.body_fixed;
45 } else {
46 req->in.bufinfo.data = NULL;
47 req->in.bufinfo.data_size = 0;
48 }
49 }
50
51 static int smb2srv_request_destructor(struct smb2srv_request *req)
52 {
53 DLIST_REMOVE(req->smb_conn->requests2.list, req);
54 if (req->pending_id) {
55 idr_remove(req->smb_conn->requests2.idtree_req, req->pending_id);
56 }
57 return 0;
58 }
59
60 static int smb2srv_request_deny_destructor(struct smb2srv_request *req)
61 {
62 return -1;
63 }
64
65 struct smb2srv_request *smb2srv_init_request(struct smbsrv_connection *smb_conn)
66 {
67 struct smb2srv_request *req;
68
69 req = talloc_zero(smb_conn, struct smb2srv_request);
70 if (!req) return NULL;
71
72 req->smb_conn = smb_conn;
73
74 talloc_set_destructor(req, smb2srv_request_destructor);
75
76 return req;
77 }
78
79 NTSTATUS smb2srv_setup_reply(struct smb2srv_request *req, uint16_t body_fixed_size,
80 bool body_dynamic_present, uint32_t body_dynamic_size)
81 {
82 uint32_t flags = SMB2_HDR_FLAG_REDIRECT;
83 uint32_t pid = IVAL(req->in.hdr, SMB2_HDR_PID);
84 uint32_t tid = IVAL(req->in.hdr, SMB2_HDR_TID);
85
86 if (req->pending_id) {
87 flags |= SMB2_HDR_FLAG_ASYNC;
88 pid = req->pending_id;
89 tid = 0;
90 }
91
92 if (body_dynamic_present) {
93 if (body_dynamic_size == 0) {
94 body_dynamic_size = 1;
95 }
96 } else {
97 body_dynamic_size = 0;
98 }
99
100 req->out.size = SMB2_HDR_BODY+NBT_HDR_SIZE+body_fixed_size;
101
102 req->out.allocated = req->out.size + body_dynamic_size;
103 req->out.buffer = talloc_array(req, uint8_t,
104 req->out.allocated);
105 NT_STATUS_HAVE_NO_MEMORY(req->out.buffer);
106
107 req->out.hdr = req->out.buffer + NBT_HDR_SIZE;
108 req->out.body = req->out.hdr + SMB2_HDR_BODY;
109 req->out.body_fixed = body_fixed_size;
110 req->out.body_size = body_fixed_size;
111 req->out.dynamic = (body_dynamic_size ? req->out.body + body_fixed_size : NULL);
112
113 SIVAL(req->out.hdr, 0, SMB2_MAGIC);
114 SSVAL(req->out.hdr, SMB2_HDR_LENGTH, SMB2_HDR_BODY);
115 SSVAL(req->out.hdr, SMB2_HDR_EPOCH, 0);
116 SIVAL(req->out.hdr, SMB2_HDR_STATUS, NT_STATUS_V(req->status));
117 SSVAL(req->out.hdr, SMB2_HDR_OPCODE, SVAL(req->in.hdr, SMB2_HDR_OPCODE));
118 SSVAL(req->out.hdr, SMB2_HDR_CREDIT, 0x0001);
119 SIVAL(req->out.hdr, SMB2_HDR_FLAGS, flags);
120 SIVAL(req->out.hdr, SMB2_HDR_NEXT_COMMAND, 0);
121 SBVAL(req->out.hdr, SMB2_HDR_MESSAGE_ID, req->seqnum);
122 SIVAL(req->out.hdr, SMB2_HDR_PID, pid);
123 SIVAL(req->out.hdr, SMB2_HDR_TID, tid);
124 SBVAL(req->out.hdr, SMB2_HDR_SESSION_ID, BVAL(req->in.hdr, SMB2_HDR_SESSION_ID));
125 memset(req->out.hdr+SMB2_HDR_SIGNATURE, 0, 16);
126
127 /* set the length of the fixed body part and +1 if there's a dynamic part also */
128 SSVAL(req->out.body, 0, body_fixed_size + (body_dynamic_size?1:0));
129
130 /*
131 * if we have a dynamic part, make sure the first byte
132 * which is always be part of the packet is initialized
133 */
134 if (body_dynamic_size) {
135 req->out.size += 1;
136 SCVAL(req->out.dynamic, 0, 0);
137 }
138
139 return NT_STATUS_OK;
140 }
141
142 static NTSTATUS smb2srv_reply(struct smb2srv_request *req);
143
144 static void smb2srv_chain_reply(struct smb2srv_request *p_req)
145 {
146 NTSTATUS status;
147 struct smb2srv_request *req;
148 uint32_t chain_offset;
149 uint32_t protocol_version;
150 uint16_t buffer_code;
151 uint32_t dynamic_size;
152 uint32_t flags;
153 uint32_t last_hdr_offset;
154
155 last_hdr_offset = p_req->in.hdr - p_req->in.buffer;
156
157 chain_offset = p_req->chain_offset;
158 p_req->chain_offset = 0;
159
160 if (p_req->in.size < (last_hdr_offset + chain_offset + SMB2_MIN_SIZE_NO_BODY)) {
161 DEBUG(2,("Invalid SMB2 chained packet at offset 0x%X from last hdr 0x%X\n",
162 chain_offset, last_hdr_offset));
163 smbsrv_terminate_connection(p_req->smb_conn, "Invalid SMB2 chained packet");
164 return;
165 }
166
167 protocol_version = IVAL(p_req->in.buffer, last_hdr_offset + chain_offset);
168 if (protocol_version != SMB2_MAGIC) {
169 DEBUG(2,("Invalid SMB chained packet: protocol prefix: 0x%08X\n",
170 protocol_version));
171 smbsrv_terminate_connection(p_req->smb_conn, "NON-SMB2 chained packet");
172 return;
173 }
174
175 req = smb2srv_init_request(p_req->smb_conn);
176 if (!req) {
177 smbsrv_terminate_connection(p_req->smb_conn, "SMB2 chained packet - no memory");
178 return;
179 }
180
181 req->in.buffer = talloc_steal(req, p_req->in.buffer);
182 req->in.size = p_req->in.size;
183 req->request_time = p_req->request_time;
184 req->in.allocated = req->in.size;
185
186 req->in.hdr = req->in.buffer+ last_hdr_offset + chain_offset;
187 req->in.body = req->in.hdr + SMB2_HDR_BODY;
188 req->in.body_size = req->in.size - (last_hdr_offset+ chain_offset + SMB2_HDR_BODY);
189 req->in.dynamic = NULL;
190
191 req->seqnum = BVAL(req->in.hdr, SMB2_HDR_MESSAGE_ID);
192
193 if (req->in.body_size < 2) {
194 /* error handling for this is different for negprot to
195 other packet types */
196 uint16_t opcode = SVAL(req->in.hdr, SMB2_HDR_OPCODE);
197 if (opcode == SMB2_OP_NEGPROT) {
198 smbsrv_terminate_connection(req->smb_conn, "Bad body size in SMB2 negprot");
199 } else {
200 smb2srv_send_error(req, NT_STATUS_INVALID_PARAMETER);
201 }
202 }
203
204 buffer_code = SVAL(req->in.body, 0);
205 req->in.body_fixed = (buffer_code & ~1);
206 dynamic_size = req->in.body_size - req->in.body_fixed;
207
208 if (dynamic_size != 0 && (buffer_code & 1)) {
209 req->in.dynamic = req->in.body + req->in.body_fixed;
210 if (smb2_oob(&req->in, req->in.dynamic, dynamic_size)) {
211 DEBUG(1,("SMB2 chained request invalid dynamic size 0x%x\n",
212 dynamic_size));
213 smb2srv_send_error(req, NT_STATUS_INVALID_PARAMETER);
214 return;
215 }
216 }
217
218 smb2srv_setup_bufinfo(req);
219
220 flags = IVAL(req->in.hdr, SMB2_HDR_FLAGS);
221 if (flags & SMB2_HDR_FLAG_CHAINED) {
222 if (p_req->chained_file_handle) {
223 memcpy(req->_chained_file_handle,
224 p_req->_chained_file_handle,
225 sizeof(req->_chained_file_handle));
226 req->chained_file_handle = req->_chained_file_handle;
227 }
228 req->chain_status = p_req->chain_status;
229 }
230
231 /*
232 * TODO: - make sure the length field is 64
233 * - make sure it's a request
234 */
235
236 status = smb2srv_reply(req);
237 if (!NT_STATUS_IS_OK(status)) {
238 smbsrv_terminate_connection(req->smb_conn, nt_errstr(status));
239 talloc_free(req);
240 return;
241 }
242 }
243
244 void smb2srv_send_reply(struct smb2srv_request *req)
245 {
246 DATA_BLOB blob;
247 NTSTATUS status;
248
249 if (req->smb_conn->connection->event.fde == NULL) {
250 /* the socket has been destroyed - no point trying to send a reply! */
251 talloc_free(req);
252 return;
253 }
254
255 if (req->out.size > NBT_HDR_SIZE) {
256 _smb2_setlen(req->out.buffer, req->out.size - NBT_HDR_SIZE);
257 }
258
259 /* if signing is active on the session then sign the packet */
260 if (req->is_signed) {
261 status = smb2_sign_message(&req->out,
262 req->session->session_info->session_key);
263 if (!NT_STATUS_IS_OK(status)) {
264 smbsrv_terminate_connection(req->smb_conn, nt_errstr(status));
265 return;
266 }
267 }
268
269
270 blob = data_blob_const(req->out.buffer, req->out.size);
271 status = packet_send(req->smb_conn->packet, blob);
272 if (!NT_STATUS_IS_OK(status)) {
273 smbsrv_terminate_connection(req->smb_conn, nt_errstr(status));
274 }
275 if (req->chain_offset) {
276 smb2srv_chain_reply(req);
277 return;
278 }
279 talloc_free(req);
280 }
281
282 void smb2srv_send_error(struct smb2srv_request *req, NTSTATUS error)
283 {
284 NTSTATUS status;
285
286 if (req->smb_conn->connection->event.fde == NULL) {
287 /* the socket has been destroyed - no point trying to send an error! */
288 talloc_free(req);
289 return;
290 }
291
292 status = smb2srv_setup_reply(req, 8, true, 0);
293 if (!NT_STATUS_IS_OK(status)) {
294 smbsrv_terminate_connection(req->smb_conn, nt_errstr(status));
295 talloc_free(req);
296 return;
297 }
298
299 SIVAL(req->out.hdr, SMB2_HDR_STATUS, NT_STATUS_V(error));
300
301 SSVAL(req->out.body, 0x02, 0);
302 SIVAL(req->out.body, 0x04, 0);
303
304 req->chain_status = NT_STATUS_INVALID_PARAMETER;
305
306 smb2srv_send_reply(req);
307 }
308
309 static NTSTATUS smb2srv_reply(struct smb2srv_request *req)
310 {
311 uint16_t opcode;
312 uint32_t tid;
313 uint64_t uid;
314 uint32_t flags;
315
316 if (SVAL(req->in.hdr, SMB2_HDR_LENGTH) != SMB2_HDR_BODY) {
317 smbsrv_terminate_connection(req->smb_conn, "Invalid SMB2 header length");
318 return NT_STATUS_INVALID_PARAMETER;
319 }
320 opcode = SVAL(req->in.hdr, SMB2_HDR_OPCODE);
321 req->chain_offset = IVAL(req->in.hdr, SMB2_HDR_NEXT_COMMAND);
322 req->seqnum = BVAL(req->in.hdr, SMB2_HDR_MESSAGE_ID);
323 tid = IVAL(req->in.hdr, SMB2_HDR_TID);
324 uid = BVAL(req->in.hdr, SMB2_HDR_SESSION_ID);
325 flags = IVAL(req->in.hdr, SMB2_HDR_FLAGS);
326
327 if (req->smb_conn->highest_smb2_seqnum != 0 &&
328 req->seqnum <= req->smb_conn->highest_smb2_seqnum) {
329 smbsrv_terminate_connection(req->smb_conn, "Invalid SMB2 sequence number");
330 return NT_STATUS_INVALID_PARAMETER;
331 }
332 req->smb_conn->highest_smb2_seqnum = req->seqnum;
333
334 req->session = smbsrv_session_find(req->smb_conn, uid, req->request_time);
335 req->tcon = smbsrv_smb2_tcon_find(req->session, tid, req->request_time);
336
337 errno = 0;
338
339 /* supporting signing is mandatory in SMB2, and is per-packet. So we
340 should check the signature on any incoming packet that is signed, and
341 should give a signed reply to any signed request */
342 if (flags & SMB2_HDR_FLAG_SIGNED) {
343 NTSTATUS status;
344
345 if (!req->session) goto nosession;
346
347 req->is_signed = true;
348 status = smb2_check_signature(&req->in,
349 req->session->session_info->session_key);
350 if (!NT_STATUS_IS_OK(status)) {
351 smb2srv_send_error(req, status);
352 return NT_STATUS_OK;
353 }
354 } else if (req->session && req->session->smb2_signing.active) {
355 /* we require signing and this request was not signed */
356 smb2srv_send_error(req, NT_STATUS_ACCESS_DENIED);
357 return NT_STATUS_OK;
358 }
359
360 if (!NT_STATUS_IS_OK(req->chain_status)) {
361 smb2srv_send_error(req, req->chain_status);
362 return NT_STATUS_OK;
363 }
364
365 switch (opcode) {
366 case SMB2_OP_NEGPROT:
367 smb2srv_negprot_recv(req);
368 return NT_STATUS_OK;
369 case SMB2_OP_SESSSETUP:
370 smb2srv_sesssetup_recv(req);
371 return NT_STATUS_OK;
372 case SMB2_OP_LOGOFF:
373 if (!req->session) goto nosession;
374 smb2srv_logoff_recv(req);
375 return NT_STATUS_OK;
376 case SMB2_OP_TCON:
377 if (!req->session) goto nosession;
378 smb2srv_tcon_recv(req);
379 return NT_STATUS_OK;
380 case SMB2_OP_TDIS:
381 if (!req->session) goto nosession;
382 if (!req->tcon) goto notcon;
383 smb2srv_tdis_recv(req);
384 return NT_STATUS_OK;
385 case SMB2_OP_CREATE:
386 if (!req->session) goto nosession;
387 if (!req->tcon) goto notcon;
388 smb2srv_create_recv(req);
389 return NT_STATUS_OK;
390 case SMB2_OP_CLOSE:
391 if (!req->session) goto nosession;
392 if (!req->tcon) goto notcon;
393 smb2srv_close_recv(req);
394 return NT_STATUS_OK;
395 case SMB2_OP_FLUSH:
396 if (!req->session) goto nosession;
397 if (!req->tcon) goto notcon;
398 smb2srv_flush_recv(req);
399 return NT_STATUS_OK;
400 case SMB2_OP_READ:
401 if (!req->session) goto nosession;
402 if (!req->tcon) goto notcon;
403 smb2srv_read_recv(req);
404 return NT_STATUS_OK;
405 case SMB2_OP_WRITE:
406 if (!req->session) goto nosession;
407 if (!req->tcon) goto notcon;
408 smb2srv_write_recv(req);
409 return NT_STATUS_OK;
410 case SMB2_OP_LOCK:
411 if (!req->session) goto nosession;
412 if (!req->tcon) goto notcon;
413 smb2srv_lock_recv(req);
414 return NT_STATUS_OK;
415 case SMB2_OP_IOCTL:
416 if (!req->session) goto nosession;
417 if (!req->tcon) goto notcon;
418 smb2srv_ioctl_recv(req);
419 return NT_STATUS_OK;
420 case SMB2_OP_CANCEL:
421 smb2srv_cancel_recv(req);
422 return NT_STATUS_OK;
423 case SMB2_OP_KEEPALIVE:
424 smb2srv_keepalive_recv(req);
425 return NT_STATUS_OK;
426 case SMB2_OP_FIND:
427 if (!req->session) goto nosession;
428 if (!req->tcon) goto notcon;
429 smb2srv_find_recv(req);
430 return NT_STATUS_OK;
431 case SMB2_OP_NOTIFY:
432 if (!req->session) goto nosession;
433 if (!req->tcon) goto notcon;
434 smb2srv_notify_recv(req);
435 return NT_STATUS_OK;
436 case SMB2_OP_GETINFO:
437 if (!req->session) goto nosession;
438 if (!req->tcon) goto notcon;
439 smb2srv_getinfo_recv(req);
440 return NT_STATUS_OK;
441 case SMB2_OP_SETINFO:
442 if (!req->session) goto nosession;
443 if (!req->tcon) goto notcon;
444 smb2srv_setinfo_recv(req);
445 return NT_STATUS_OK;
446 case SMB2_OP_BREAK:
447 if (!req->session) goto nosession;
448 if (!req->tcon) goto notcon;
449 smb2srv_break_recv(req);
450 return NT_STATUS_OK;
451 }
452
453 DEBUG(1,("Invalid SMB2 opcode: 0x%04X\n", opcode));
454 smbsrv_terminate_connection(req->smb_conn, "Invalid SMB2 opcode");
455 return NT_STATUS_OK;
456
457 nosession:
458 smb2srv_send_error(req, NT_STATUS_USER_SESSION_DELETED);
459 return NT_STATUS_OK;
460 notcon:
461 smb2srv_send_error(req, NT_STATUS_NETWORK_NAME_DELETED);
462 return NT_STATUS_OK;
463 }
464
465 NTSTATUS smbsrv_recv_smb2_request(void *private_data, DATA_BLOB blob)
466 {
467 struct smbsrv_connection *smb_conn = talloc_get_type(private_data, struct smbsrv_connection);
468 struct smb2srv_request *req;
469 struct timeval cur_time = timeval_current();
470 uint32_t protocol_version;
471 uint16_t buffer_code;
472 uint32_t dynamic_size;
473 uint32_t flags;
474
475 smb_conn->statistics.last_request_time = cur_time;
476
477 /* see if its a special NBT packet */
478 if (CVAL(blob.data,0) != 0) {
479 DEBUG(2,("Special NBT packet on SMB2 connection"));
480 smbsrv_terminate_connection(smb_conn, "Special NBT packet on SMB2 connection");
481 return NT_STATUS_OK;
482 }
483
484 if (blob.length < (NBT_HDR_SIZE + SMB2_MIN_SIZE_NO_BODY)) {
485 DEBUG(2,("Invalid SMB2 packet length count %ld\n", (long)blob.length));
486 smbsrv_terminate_connection(smb_conn, "Invalid SMB2 packet");
487 return NT_STATUS_OK;
488 }
489
490 protocol_version = IVAL(blob.data, NBT_HDR_SIZE);
491 if (protocol_version != SMB2_MAGIC) {
492 DEBUG(2,("Invalid SMB packet: protocol prefix: 0x%08X\n",
493 protocol_version));
494 smbsrv_terminate_connection(smb_conn, "NON-SMB2 packet");
495 return NT_STATUS_OK;
496 }
497
498 req = smb2srv_init_request(smb_conn);
499 NT_STATUS_HAVE_NO_MEMORY(req);
500
501 req->in.buffer = talloc_steal(req, blob.data);
502 req->in.size = blob.length;
503 req->request_time = cur_time;
504 req->in.allocated = req->in.size;
505
506 req->in.hdr = req->in.buffer+ NBT_HDR_SIZE;
507 req->in.body = req->in.hdr + SMB2_HDR_BODY;
508 req->in.body_size = req->in.size - (SMB2_HDR_BODY+NBT_HDR_SIZE);
509 req->in.dynamic = NULL;
510
511 req->seqnum = BVAL(req->in.hdr, SMB2_HDR_MESSAGE_ID);
512
513 if (req->in.body_size < 2) {
514 /* error handling for this is different for negprot to
515 other packet types */
516 uint16_t opcode = SVAL(req->in.hdr, SMB2_HDR_OPCODE);
517 if (opcode == SMB2_OP_NEGPROT) {
518 smbsrv_terminate_connection(req->smb_conn, "Bad body size in SMB2 negprot");
519 return NT_STATUS_OK;
520 } else {
521 smb2srv_send_error(req, NT_STATUS_INVALID_PARAMETER);
522 return NT_STATUS_OK;
523 }
524 }
525
526 buffer_code = SVAL(req->in.body, 0);
527 req->in.body_fixed = (buffer_code & ~1);
528 dynamic_size = req->in.body_size - req->in.body_fixed;
529
530 if (dynamic_size != 0 && (buffer_code & 1)) {
531 req->in.dynamic = req->in.body + req->in.body_fixed;
532 if (smb2_oob(&req->in, req->in.dynamic, dynamic_size)) {
533 DEBUG(1,("SMB2 request invalid dynamic size 0x%x\n",
534 dynamic_size));
535 smb2srv_send_error(req, NT_STATUS_INVALID_PARAMETER);
536 return NT_STATUS_OK;
537 }
538 }
539
540 smb2srv_setup_bufinfo(req);
541
542 /*
543 * TODO: - make sure the length field is 64
544 * - make sure it's a request
545 */
546
547 flags = IVAL(req->in.hdr, SMB2_HDR_FLAGS);
548 /* the first request should never have the related flag set */
549 if (flags & SMB2_HDR_FLAG_CHAINED) {
550 req->chain_status = NT_STATUS_INVALID_PARAMETER;
551 }
552
553 return smb2srv_reply(req);
554 }
555
556 static NTSTATUS smb2srv_init_pending(struct smbsrv_connection *smb_conn)
557 {
558 smb_conn->requests2.idtree_req = idr_init(smb_conn);
559 NT_STATUS_HAVE_NO_MEMORY(smb_conn->requests2.idtree_req);
560 smb_conn->requests2.idtree_limit = 0x00FFFFFF & (UINT32_MAX - 1);
561 smb_conn->requests2.list = NULL;
562
563 return NT_STATUS_OK;
564 }
565
566 NTSTATUS smb2srv_queue_pending(struct smb2srv_request *req)
567 {
568 NTSTATUS status;
569 bool signing_used = false;
570 int id;
571
572 if (req->pending_id) {
573 return NT_STATUS_INTERNAL_ERROR;
574 }
575
576 id = idr_get_new_above(req->smb_conn->requests2.idtree_req, req,
577 1, req->smb_conn->requests2.idtree_limit);
578 if (id == -1) {
579 return NT_STATUS_INSUFFICIENT_RESOURCES;
580 }
581
582 DLIST_ADD_END(req->smb_conn->requests2.list, req, struct smb2srv_request *);
583 req->pending_id = id;
584
585 if (req->smb_conn->connection->event.fde == NULL) {
586 /* the socket has been destroyed - no point trying to send an error! */
587 return NT_STATUS_REMOTE_DISCONNECT;
588 }
589
590 talloc_set_destructor(req, smb2srv_request_deny_destructor);
591
592 status = smb2srv_setup_reply(req, 8, true, 0);
593 if (!NT_STATUS_IS_OK(status)) {
594 return status;
595 }
596
597 SIVAL(req->out.hdr, SMB2_HDR_STATUS, NT_STATUS_V(STATUS_PENDING));
598
599 SSVAL(req->out.body, 0x02, 0);
600 SIVAL(req->out.body, 0x04, 0);
601
602 /* if the real reply will be signed set the signed flags, but don't sign */
603 if (req->is_signed) {
604 SIVAL(req->out.hdr, SMB2_HDR_FLAGS, IVAL(req->out.hdr, SMB2_HDR_FLAGS) | SMB2_HDR_FLAG_SIGNED);
605 signing_used = req->is_signed;
606 req->is_signed = false;
607 }
608
609 smb2srv_send_reply(req);
610
611 req->is_signed = signing_used;
612
613 talloc_set_destructor(req, smb2srv_request_destructor);
614 return NT_STATUS_OK;
615 }
616
617 void smb2srv_cancel_recv(struct smb2srv_request *req)
618 {
619 uint32_t pending_id;
620 uint32_t flags;
621 void *p;
622 struct smb2srv_request *r;
623
624 if (!req->session) goto done;
625
626 flags = IVAL(req->in.hdr, SMB2_HDR_FLAGS);
627 pending_id = IVAL(req->in.hdr, SMB2_HDR_PID);
628
629 if (!(flags & SMB2_HDR_FLAG_ASYNC)) {
630 /* TODO: what to do here? */
631 goto done;
632 }
633
634 p = idr_find(req->smb_conn->requests2.idtree_req, pending_id);
635 if (!p) goto done;
636
637 r = talloc_get_type(p, struct smb2srv_request);
638 if (!r) goto done;
639
640 if (!r->ntvfs) goto done;
641
642 ntvfs_cancel(r->ntvfs);
643
644 done:
645 /* we never generate a reply for a SMB2 Cancel */
646 talloc_free(req);
647 }
648
649 /*
650 * init the SMB2 protocol related stuff
651 */
652 NTSTATUS smbsrv_init_smb2_connection(struct smbsrv_connection *smb_conn)
653 {
654 NTSTATUS status;
655
656 /* now initialise a few default values associated with this smb socket */
657 smb_conn->negotiate.max_send = 0xFFFF;
658
659 /* this is the size that w2k uses, and it appears to be important for
660 good performance */
661 smb_conn->negotiate.max_recv = lp_max_xmit(smb_conn->lp_ctx);
662
663 smb_conn->negotiate.zone_offset = get_time_zone(time(NULL));
664
665 smb_conn->config.security = SEC_USER;
666 smb_conn->config.nt_status_support = true;
667
668 status = smbsrv_init_sessions(smb_conn, UINT64_MAX);
669 NT_STATUS_NOT_OK_RETURN(status);
670
671 status = smb2srv_init_pending(smb_conn);
672 NT_STATUS_NOT_OK_RETURN(status);
673
674 return NT_STATUS_OK;
675
676 }
aatanasov's samba4 branch