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s4:password_hash LDB module - introduce a "userPassword" flag which enables/disables...
[Samba.git] / source3 / smbd / smb2_server.c
blobeb19d67b11551f9ef88de3adb661f5dde34febed
1 /*
2 Unix SMB/CIFS implementation.
3 Core SMB2 server
4
5 Copyright (C) Stefan Metzmacher 2009
6 Copyright (C) Jeremy Allison 2010
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 "smbd/globals.h"
24 #include "../libcli/smb/smb_common.h"
25 #include "../lib/tsocket/tsocket.h"
26
27 #define OUTVEC_ALLOC_SIZE (SMB2_HDR_BODY + 9)
28
29 static const char *smb2_names[] = {
30 "SMB2_NEGPROT",
31 "SMB2_SESSSETUP",
32 "SMB2_LOGOFF",
33 "SMB2_TCON",
34 "SMB2_TDIS",
35 "SMB2_CREATE",
36 "SMB2_CLOSE",
37 "SMB2_FLUSH",
38 "SMB2_READ",
39 "SMB2_WRITE",
40 "SMB2_LOCK",
41 "SMB2_IOCTL",
42 "SMB2_CANCEL",
43 "SMB2_KEEPALIVE",
44 "SMB2_FIND",
45 "SMB2_NOTIFY",
46 "SMB2_GETINFO",
47 "SMB2_SETINFO",
48 "SMB2_BREAK"
49 };
50
51 const char *smb2_opcode_name(uint16_t opcode)
52 {
53 if (opcode > 0x12) {
54 return "Bad SMB2 opcode";
55 }
56 return smb2_names[opcode];
57 }
58
59 static void print_req_vectors(struct smbd_smb2_request *req)
60 {
61 int i;
62
63 for (i = 0; i < req->in.vector_count; i++) {
64 dbgtext("\treq->in.vector[%u].iov_len = %u\n",
65 (unsigned int)i,
66 (unsigned int)req->in.vector[i].iov_len);
67 }
68 for (i = 0; i < req->out.vector_count; i++) {
69 dbgtext("\treq->out.vector[%u].iov_len = %u\n",
70 (unsigned int)i,
71 (unsigned int)req->out.vector[i].iov_len);
72 }
73 }
74
75 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size)
76 {
77 if (size < (4 + SMB2_HDR_BODY)) {
78 return false;
79 }
80
81 if (IVAL(inbuf, 4) != SMB2_MAGIC) {
82 return false;
83 }
84
85 return true;
86 }
87
88 static NTSTATUS smbd_initialize_smb2(struct smbd_server_connection *sconn)
89 {
90 NTSTATUS status;
91 int ret;
92
93 TALLOC_FREE(sconn->smb1.fde);
94
95 sconn->smb2.event_ctx = smbd_event_context();
96
97 sconn->smb2.recv_queue = tevent_queue_create(sconn, "smb2 recv queue");
98 if (sconn->smb2.recv_queue == NULL) {
99 return NT_STATUS_NO_MEMORY;
100 }
101
102 sconn->smb2.send_queue = tevent_queue_create(sconn, "smb2 send queue");
103 if (sconn->smb2.send_queue == NULL) {
104 return NT_STATUS_NO_MEMORY;
105 }
106
107 sconn->smb2.sessions.idtree = idr_init(sconn);
108 if (sconn->smb2.sessions.idtree == NULL) {
109 return NT_STATUS_NO_MEMORY;
110 }
111 sconn->smb2.sessions.limit = 0x0000FFFE;
112 sconn->smb2.sessions.list = NULL;
113
114 ret = tstream_bsd_existing_socket(sconn, sconn->sock,
115 &sconn->smb2.stream);
116 if (ret == -1) {
117 status = map_nt_error_from_unix(errno);
118 return status;
119 }
120
121 /* Ensure child is set to non-blocking mode */
122 set_blocking(sconn->sock, false);
123 return NT_STATUS_OK;
124 }
125
126 #define smb2_len(buf) (PVAL(buf,3)|(PVAL(buf,2)<<8)|(PVAL(buf,1)<<16))
127 #define _smb2_setlen(_buf,len) do { \
128 uint8_t *buf = (uint8_t *)_buf; \
129 buf[0] = 0; \
130 buf[1] = ((len)&0xFF0000)>>16; \
131 buf[2] = ((len)&0xFF00)>>8; \
132 buf[3] = (len)&0xFF; \
133 } while (0)
134
135 static void smb2_setup_nbt_length(struct iovec *vector, int count)
136 {
137 size_t len = 0;
138 int i;
139
140 for (i=1; i < count; i++) {
141 len += vector[i].iov_len;
142 }
143
144 _smb2_setlen(vector[0].iov_base, len);
145 }
146
147 static int smbd_smb2_request_parent_destructor(struct smbd_smb2_request **req)
148 {
149 if (*req) {
150 (*req)->parent = NULL;
151 (*req)->mem_pool = NULL;
152 }
153
154 return 0;
155 }
156
157 static int smbd_smb2_request_destructor(struct smbd_smb2_request *req)
158 {
159 if (req->parent) {
160 *req->parent = NULL;
161 talloc_free(req->mem_pool);
162 }
163
164 return 0;
165 }
166
167 static struct smbd_smb2_request *smbd_smb2_request_allocate(TALLOC_CTX *mem_ctx)
168 {
169 TALLOC_CTX *mem_pool;
170 struct smbd_smb2_request **parent;
171 struct smbd_smb2_request *req;
172
173 #if 0
174 /* Enable this to find subtle valgrind errors. */
175 mem_pool = talloc_init("smbd_smb2_request_allocate");
176 #else
177 mem_pool = talloc_pool(mem_ctx, 8192);
178 #endif
179 if (mem_pool == NULL) {
180 return NULL;
181 }
182
183 parent = talloc(mem_pool, struct smbd_smb2_request *);
184 if (parent == NULL) {
185 talloc_free(mem_pool);
186 return NULL;
187 }
188
189 req = talloc_zero(parent, struct smbd_smb2_request);
190 if (req == NULL) {
191 talloc_free(mem_pool);
192 return NULL;
193 }
194 *parent = req;
195 req->mem_pool = mem_pool;
196 req->parent = parent;
197
198 talloc_set_destructor(parent, smbd_smb2_request_parent_destructor);
199 talloc_set_destructor(req, smbd_smb2_request_destructor);
200
201 return req;
202 }
203
204 static NTSTATUS smbd_smb2_request_create(struct smbd_server_connection *sconn,
205 const uint8_t *inbuf, size_t size,
206 struct smbd_smb2_request **_req)
207 {
208 struct smbd_smb2_request *req;
209 uint32_t protocol_version;
210 const uint8_t *inhdr = NULL;
211 off_t ofs = 0;
212 uint16_t cmd;
213 uint32_t next_command_ofs;
214
215 if (size < (4 + SMB2_HDR_BODY + 2)) {
216 DEBUG(0,("Invalid SMB2 packet length count %ld\n", (long)size));
217 return NT_STATUS_INVALID_PARAMETER;
218 }
219
220 inhdr = inbuf + 4;
221
222 protocol_version = IVAL(inhdr, SMB2_HDR_PROTOCOL_ID);
223 if (protocol_version != SMB2_MAGIC) {
224 DEBUG(0,("Invalid SMB packet: protocol prefix: 0x%08X\n",
225 protocol_version));
226 return NT_STATUS_INVALID_PARAMETER;
227 }
228
229 cmd = SVAL(inhdr, SMB2_HDR_OPCODE);
230 if (cmd != SMB2_OP_NEGPROT) {
231 DEBUG(0,("Invalid SMB packet: first request: 0x%04X\n",
232 cmd));
233 return NT_STATUS_INVALID_PARAMETER;
234 }
235
236 next_command_ofs = IVAL(inhdr, SMB2_HDR_NEXT_COMMAND);
237 if (next_command_ofs != 0) {
238 DEBUG(0,("Invalid SMB packet: next_command: 0x%08X\n",
239 next_command_ofs));
240 return NT_STATUS_INVALID_PARAMETER;
241 }
242
243 req = smbd_smb2_request_allocate(sconn);
244 if (req == NULL) {
245 return NT_STATUS_NO_MEMORY;
246 }
247 req->sconn = sconn;
248
249 talloc_steal(req, inbuf);
250
251 req->in.vector = talloc_array(req, struct iovec, 4);
252 if (req->in.vector == NULL) {
253 TALLOC_FREE(req);
254 return NT_STATUS_NO_MEMORY;
255 }
256 req->in.vector_count = 4;
257
258 memcpy(req->in.nbt_hdr, inbuf, 4);
259
260 ofs = 0;
261 req->in.vector[0].iov_base = (void *)req->in.nbt_hdr;
262 req->in.vector[0].iov_len = 4;
263 ofs += req->in.vector[0].iov_len;
264
265 req->in.vector[1].iov_base = (void *)(inbuf + ofs);
266 req->in.vector[1].iov_len = SMB2_HDR_BODY;
267 ofs += req->in.vector[1].iov_len;
268
269 req->in.vector[2].iov_base = (void *)(inbuf + ofs);
270 req->in.vector[2].iov_len = SVAL(inbuf, ofs) & 0xFFFE;
271 ofs += req->in.vector[2].iov_len;
272
273 if (ofs > size) {
274 return NT_STATUS_INVALID_PARAMETER;
275 }
276
277 req->in.vector[3].iov_base = (void *)(inbuf + ofs);
278 req->in.vector[3].iov_len = size - ofs;
279 ofs += req->in.vector[3].iov_len;
280
281 req->current_idx = 1;
282
283 *_req = req;
284 return NT_STATUS_OK;
285 }
286
287 static NTSTATUS smbd_smb2_request_validate(struct smbd_smb2_request *req,
288 uint16_t *p_creds_requested)
289 {
290 int count;
291 int idx;
292 bool compound_related = false;
293
294 *p_creds_requested = 0;
295 count = req->in.vector_count;
296
297 if (count < 4) {
298 /* It's not a SMB2 request */
299 return NT_STATUS_INVALID_PARAMETER;
300 }
301
302 for (idx=1; idx < count; idx += 3) {
303 uint16_t creds_requested = 0;
304 const uint8_t *inhdr = NULL;
305 uint32_t flags;
306
307 if (req->in.vector[idx].iov_len != SMB2_HDR_BODY) {
308 return NT_STATUS_INVALID_PARAMETER;
309 }
310
311 if (req->in.vector[idx+1].iov_len < 2) {
312 return NT_STATUS_INVALID_PARAMETER;
313 }
314
315 inhdr = (const uint8_t *)req->in.vector[idx].iov_base;
316
317 /* setup the SMB2 header */
318 if (IVAL(inhdr, SMB2_HDR_PROTOCOL_ID) != SMB2_MAGIC) {
319 return NT_STATUS_INVALID_PARAMETER;
320 }
321
322 creds_requested = SVAL(inhdr, SMB2_HDR_CREDIT);
323 if (*p_creds_requested + creds_requested < creds_requested) {
324 *p_creds_requested = 65535;
325 } else {
326 *p_creds_requested += creds_requested;
327 }
328
329 flags = IVAL(inhdr, SMB2_HDR_FLAGS);
330 if (idx == 1) {
331 /*
332 * the 1st request should never have the
333 * SMB2_HDR_FLAG_CHAINED flag set
334 */
335 if (flags & SMB2_HDR_FLAG_CHAINED) {
336 req->next_status = NT_STATUS_INVALID_PARAMETER;
337 return NT_STATUS_OK;
338 }
339 } else if (idx == 4) {
340 /*
341 * the 2nd request triggers related vs. unrelated
342 * compounded requests
343 */
344 if (flags & SMB2_HDR_FLAG_CHAINED) {
345 compound_related = true;
346 }
347 } else if (idx > 4) {
348 #if 0
349 /*
350 * It seems the this tests are wrong
351 * see the SMB2-COMPOUND test
352 */
353
354 /*
355 * all other requests should match the 2nd one
356 */
357 if (flags & SMB2_HDR_FLAG_CHAINED) {
358 if (!compound_related) {
359 req->next_status =
360 NT_STATUS_INVALID_PARAMETER;
361 return NT_STATUS_OK;
362 }
363 } else {
364 if (compound_related) {
365 req->next_status =
366 NT_STATUS_INVALID_PARAMETER;
367 return NT_STATUS_OK;
368 }
369 }
370 #endif
371 }
372 }
373
374 return NT_STATUS_OK;
375 }
376
377 static NTSTATUS smbd_smb2_request_setup_out(struct smbd_smb2_request *req, uint16_t creds)
378 {
379 struct iovec *vector;
380 int count;
381 int idx;
382
383 count = req->in.vector_count;
384 vector = talloc_zero_array(req, struct iovec, count);
385 if (vector == NULL) {
386 return NT_STATUS_NO_MEMORY;
387 }
388
389 vector[0].iov_base = req->out.nbt_hdr;
390 vector[0].iov_len = 4;
391 SIVAL(req->out.nbt_hdr, 0, 0);
392
393 for (idx=1; idx < count; idx += 3) {
394 const uint8_t *inhdr = NULL;
395 uint32_t in_flags;
396 uint8_t *outhdr = NULL;
397 uint8_t *outbody = NULL;
398 uint32_t next_command_ofs = 0;
399 struct iovec *current = &vector[idx];
400
401 if ((idx + 3) < count) {
402 /* we have a next command -
403 * setup for the error case. */
404 next_command_ofs = SMB2_HDR_BODY + 9;
405 }
406
407 inhdr = (const uint8_t *)req->in.vector[idx].iov_base;
408 in_flags = IVAL(inhdr, SMB2_HDR_FLAGS);
409
410 outhdr = talloc_zero_array(vector, uint8_t,
411 OUTVEC_ALLOC_SIZE);
412 if (outhdr == NULL) {
413 return NT_STATUS_NO_MEMORY;
414 }
415
416 outbody = outhdr + SMB2_HDR_BODY;
417
418 current[0].iov_base = (void *)outhdr;
419 current[0].iov_len = SMB2_HDR_BODY;
420
421 current[1].iov_base = (void *)outbody;
422 current[1].iov_len = 8;
423
424 current[2].iov_base = NULL;
425 current[2].iov_len = 0;
426
427 /* setup the SMB2 header */
428 SIVAL(outhdr, SMB2_HDR_PROTOCOL_ID, SMB2_MAGIC);
429 SSVAL(outhdr, SMB2_HDR_LENGTH, SMB2_HDR_BODY);
430 SSVAL(outhdr, SMB2_HDR_EPOCH, 0);
431 SIVAL(outhdr, SMB2_HDR_STATUS,
432 NT_STATUS_V(NT_STATUS_INTERNAL_ERROR));
433 SSVAL(outhdr, SMB2_HDR_OPCODE,
434 SVAL(inhdr, SMB2_HDR_OPCODE));
435 SSVAL(outhdr, SMB2_HDR_CREDIT, creds);
436
437 /* Remember what we gave out. */
438 req->sconn->smb2.credits_granted += creds;
439
440 SIVAL(outhdr, SMB2_HDR_FLAGS,
441 IVAL(inhdr, SMB2_HDR_FLAGS) | SMB2_HDR_FLAG_REDIRECT);
442 SIVAL(outhdr, SMB2_HDR_NEXT_COMMAND, next_command_ofs);
443 SBVAL(outhdr, SMB2_HDR_MESSAGE_ID,
444 BVAL(inhdr, SMB2_HDR_MESSAGE_ID));
445 SIVAL(outhdr, SMB2_HDR_PID,
446 IVAL(inhdr, SMB2_HDR_PID));
447 SIVAL(outhdr, SMB2_HDR_TID,
448 IVAL(inhdr, SMB2_HDR_TID));
449 SBVAL(outhdr, SMB2_HDR_SESSION_ID,
450 BVAL(inhdr, SMB2_HDR_SESSION_ID));
451 memset(outhdr + SMB2_HDR_SIGNATURE, 0, 16);
452
453 /* setup error body header */
454 SSVAL(outbody, 0x00, 0x08 + 1);
455 SSVAL(outbody, 0x02, 0);
456 SIVAL(outbody, 0x04, 0);
457 }
458
459 req->out.vector = vector;
460 req->out.vector_count = count;
461
462 /* setup the length of the NBT packet */
463 smb2_setup_nbt_length(req->out.vector, req->out.vector_count);
464
465 DLIST_ADD_END(req->sconn->smb2.requests, req, struct smbd_smb2_request *);
466
467 return NT_STATUS_OK;
468 }
469
470 void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
471 const char *reason,
472 const char *location)
473 {
474 DEBUG(10,("smbd_server_connection_terminate_ex: reason[%s] at %s\n",
475 reason, location));
476 exit_server_cleanly(reason);
477 }
478
479 static bool dup_smb2_vec3(TALLOC_CTX *ctx,
480 struct iovec *outvec,
481 const struct iovec *srcvec)
482 {
483 /* vec[0] is always boilerplate and must
484 * be allocated with size OUTVEC_ALLOC_SIZE. */
485
486 outvec[0].iov_base = talloc_memdup(ctx,
487 srcvec[0].iov_base,
488 OUTVEC_ALLOC_SIZE);
489 if (!outvec[0].iov_base) {
490 return false;
491 }
492 outvec[0].iov_len = SMB2_HDR_BODY;
493
494 /*
495 * If this is a "standard" vec[1] of length 8,
496 * pointing to srcvec[0].iov_base + SMB2_HDR_BODY,
497 * then duplicate this. Else use talloc_memdup().
498 */
499
500 if (srcvec[1].iov_len == 8 &&
501 srcvec[1].iov_base ==
502 ((uint8_t *)srcvec[0].iov_base) +
503 SMB2_HDR_BODY) {
504 outvec[1].iov_base = ((uint8_t *)outvec[1].iov_base) +
505 SMB2_HDR_BODY;
506 outvec[1].iov_len = 8;
507 } else {
508 outvec[1].iov_base = talloc_memdup(ctx,
509 srcvec[1].iov_base,
510 srcvec[1].iov_len);
511 if (!outvec[1].iov_base) {
512 return false;
513 }
514 outvec[1].iov_len = srcvec[1].iov_len;
515 }
516
517 /*
518 * If this is a "standard" vec[2] of length 1,
519 * pointing to srcvec[0].iov_base + (OUTVEC_ALLOC_SIZE - 1)
520 * then duplicate this. Else use talloc_memdup().
521 */
522
523 if (srcvec[2].iov_base &&
524 srcvec[2].iov_len) {
525 if (srcvec[2].iov_base ==
526 ((uint8_t *)srcvec[0].iov_base) +
527 (OUTVEC_ALLOC_SIZE - 1) &&
528 srcvec[2].iov_len == 1) {
529 /* Common SMB2 error packet case. */
530 outvec[2].iov_base = ((uint8_t *)outvec[0].iov_base) +
531 (OUTVEC_ALLOC_SIZE - 1);
532 } else {
533 outvec[2].iov_base = talloc_memdup(ctx,
534 srcvec[2].iov_base,
535 srcvec[2].iov_len);
536 if (!outvec[2].iov_base) {
537 return false;
538 }
539 }
540 outvec[2].iov_len = srcvec[2].iov_len;
541 } else {
542 outvec[2].iov_base = NULL;
543 outvec[2].iov_len = 0;
544 }
545 return true;
546 }
547
548 static struct smbd_smb2_request *dup_smb2_req(const struct smbd_smb2_request *req)
549 {
550 struct smbd_smb2_request *newreq = NULL;
551 struct iovec *outvec = NULL;
552 int count = req->out.vector_count;
553 int i;
554
555 newreq = smbd_smb2_request_allocate(req->sconn);
556 if (!newreq) {
557 return NULL;
558 }
559
560 newreq->sconn = req->sconn;
561 newreq->do_signing = req->do_signing;
562 newreq->current_idx = req->current_idx;
563 newreq->async = false;
564 newreq->cancelled = false;
565
566 outvec = talloc_zero_array(newreq, struct iovec, count);
567 if (!outvec) {
568 TALLOC_FREE(newreq);
569 return NULL;
570 }
571 newreq->out.vector = outvec;
572 newreq->out.vector_count = count;
573
574 /* Setup the outvec's identically to req. */
575 outvec[0].iov_base = newreq->out.nbt_hdr;
576 outvec[0].iov_len = 4;
577 memcpy(newreq->out.nbt_hdr, req->out.nbt_hdr, 4);
578
579 /* Setup the vectors identically to the ones in req. */
580 for (i = 1; i < count; i += 3) {
581 if (!dup_smb2_vec3(outvec, &outvec[i], &req->out.vector[i])) {
582 break;
583 }
584 }
585
586 if (i < count) {
587 /* Alloc failed. */
588 TALLOC_FREE(newreq);
589 return NULL;
590 }
591
592 smb2_setup_nbt_length(newreq->out.vector,
593 newreq->out.vector_count);
594
595 return newreq;
596 }
597
598 static void smbd_smb2_request_writev_done(struct tevent_req *subreq);
599
600 static NTSTATUS smb2_send_async_interim_response(const struct smbd_smb2_request *req)
601 {
602 int i = 0;
603 uint8_t *outhdr = NULL;
604 struct smbd_smb2_request *nreq = NULL;
605
606 /* Create a new smb2 request we'll use
607 for the interim return. */
608 nreq = dup_smb2_req(req);
609 if (!nreq) {
610 return NT_STATUS_NO_MEMORY;
611 }
612
613 /* Lose the last 3 out vectors. They're the
614 ones we'll be using for the async reply. */
615 nreq->out.vector_count -= 3;
616
617 smb2_setup_nbt_length(nreq->out.vector,
618 nreq->out.vector_count);
619
620 /* Step back to the previous reply. */
621 i = nreq->current_idx - 3;
622 outhdr = (uint8_t *)nreq->out.vector[i].iov_base;
623 /* And end the chain. */
624 SIVAL(outhdr, SMB2_HDR_NEXT_COMMAND, 0);
625
626 /* Re-sign if needed. */
627 if (nreq->do_signing) {
628 NTSTATUS status;
629 status = smb2_signing_sign_pdu(nreq->session->session_key,
630 &nreq->out.vector[i], 3);
631 if (!NT_STATUS_IS_OK(status)) {
632 return status;
633 }
634 }
635 if (DEBUGLEVEL >= 10) {
636 dbgtext("smb2_send_async_interim_response: nreq->current_idx = %u\n",
637 (unsigned int)nreq->current_idx );
638 dbgtext("smb2_send_async_interim_response: returning %u vectors\n",
639 (unsigned int)nreq->out.vector_count );
640 print_req_vectors(nreq);
641 }
642 nreq->subreq = tstream_writev_queue_send(nreq,
643 nreq->sconn->smb2.event_ctx,
644 nreq->sconn->smb2.stream,
645 nreq->sconn->smb2.send_queue,
646 nreq->out.vector,
647 nreq->out.vector_count);
648
649 if (nreq->subreq == NULL) {
650 return NT_STATUS_NO_MEMORY;
651 }
652
653 tevent_req_set_callback(nreq->subreq,
654 smbd_smb2_request_writev_done,
655 nreq);
656
657 return NT_STATUS_OK;
658 }
659
660 struct smbd_smb2_request_pending_state {
661 struct smbd_server_connection *sconn;
662 uint8_t buf[4 + SMB2_HDR_BODY + 0x08 + 1];
663 struct iovec vector[3];
664 };
665
666 static void smbd_smb2_request_pending_writev_done(struct tevent_req *subreq)
667 {
668 struct smbd_smb2_request_pending_state *state =
669 tevent_req_callback_data(subreq,
670 struct smbd_smb2_request_pending_state);
671 struct smbd_server_connection *sconn = state->sconn;
672 int ret;
673 int sys_errno;
674
675 ret = tstream_writev_queue_recv(subreq, &sys_errno);
676 TALLOC_FREE(subreq);
677 if (ret == -1) {
678 NTSTATUS status = map_nt_error_from_unix(sys_errno);
679 smbd_server_connection_terminate(sconn, nt_errstr(status));
680 return;
681 }
682
683 TALLOC_FREE(state);
684 }
685
686 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
687 struct tevent_req *subreq)
688 {
689 NTSTATUS status;
690 struct smbd_smb2_request_pending_state *state = NULL;
691 int i = req->current_idx;
692 uint8_t *reqhdr = NULL;
693 uint8_t *hdr = NULL;
694 uint8_t *body = NULL;
695 uint32_t flags = 0;
696 uint64_t message_id = 0;
697 uint64_t async_id = 0;
698 struct iovec *outvec = NULL;
699
700 if (!tevent_req_is_in_progress(subreq)) {
701 return NT_STATUS_OK;
702 }
703
704 req->subreq = subreq;
705 subreq = NULL;
706
707 if (req->async) {
708 /* We're already async. */
709 return NT_STATUS_OK;
710 }
711
712 if (req->in.vector_count > i + 3) {
713 /*
714 * We're trying to go async in a compound
715 * request chain. This is not allowed.
716 * Cancel the outstanding request.
717 */
718 tevent_req_cancel(req->subreq);
719 return smbd_smb2_request_error(req,
720 NT_STATUS_INSUFFICIENT_RESOURCES);
721 }
722
723 if (DEBUGLEVEL >= 10) {
724 dbgtext("smbd_smb2_request_pending_queue: req->current_idx = %u\n",
725 (unsigned int)req->current_idx );
726 print_req_vectors(req);
727 }
728
729 if (req->out.vector_count > 4) {
730 /* This is a compound reply. We
731 * must do an interim response
732 * followed by the async response
733 * to match W2K8R2.
734 */
735 status = smb2_send_async_interim_response(req);
736 if (!NT_STATUS_IS_OK(status)) {
737 return status;
738 }
739 }
740
741 /* Don't return an intermediate packet on a pipe read/write. */
742 if (req->tcon && req->tcon->compat_conn && IS_IPC(req->tcon->compat_conn)) {
743 return NT_STATUS_OK;
744 }
745
746 reqhdr = (uint8_t *)req->out.vector[i].iov_base;
747 flags = (IVAL(reqhdr, SMB2_HDR_FLAGS) & ~SMB2_HDR_FLAG_CHAINED);
748 message_id = BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
749 async_id = message_id; /* keep it simple for now... */
750
751 /*
752 * What we send is identical to a smbd_smb2_request_error
753 * packet with an error status of STATUS_PENDING. Make use
754 * of this fact sometime when refactoring. JRA.
755 */
756
757 state = talloc_zero(req->sconn, struct smbd_smb2_request_pending_state);
758 if (state == NULL) {
759 return NT_STATUS_NO_MEMORY;
760 }
761 state->sconn = req->sconn;
762
763 state->vector[0].iov_base = (void *)state->buf;
764 state->vector[0].iov_len = 4;
765
766 state->vector[1].iov_base = state->buf + 4;
767 state->vector[1].iov_len = SMB2_HDR_BODY;
768
769 state->vector[2].iov_base = state->buf + 4 + SMB2_HDR_BODY;
770 state->vector[2].iov_len = 9;
771
772 smb2_setup_nbt_length(state->vector, 3);
773
774 hdr = (uint8_t *)state->vector[1].iov_base;
775 body = (uint8_t *)state->vector[2].iov_base;
776
777 SIVAL(hdr, SMB2_HDR_PROTOCOL_ID, SMB2_MAGIC);
778 SSVAL(hdr, SMB2_HDR_LENGTH, SMB2_HDR_BODY);
779 SSVAL(hdr, SMB2_HDR_EPOCH, 0);
780 SIVAL(hdr, SMB2_HDR_STATUS, NT_STATUS_V(STATUS_PENDING));
781 SSVAL(hdr, SMB2_HDR_OPCODE, SVAL(reqhdr, SMB2_HDR_OPCODE));
782 SSVAL(hdr, SMB2_HDR_CREDIT, 5);
783
784 req->sconn->smb2.credits_granted += 5;
785
786 SIVAL(hdr, SMB2_HDR_FLAGS, flags | SMB2_HDR_FLAG_ASYNC);
787 SIVAL(hdr, SMB2_HDR_NEXT_COMMAND, 0);
788 SBVAL(hdr, SMB2_HDR_MESSAGE_ID, message_id);
789 SBVAL(hdr, SMB2_HDR_PID, async_id);
790 SBVAL(hdr, SMB2_HDR_SESSION_ID,
791 BVAL(reqhdr, SMB2_HDR_SESSION_ID));
792 memset(hdr+SMB2_HDR_SIGNATURE, 0, 16);
793
794 SSVAL(body, 0x00, 0x08 + 1);
795
796 SCVAL(body, 0x02, 0);
797 SCVAL(body, 0x03, 0);
798 SIVAL(body, 0x04, 0);
799 /* Match W2K8R2... */
800 SCVAL(body, 0x08, 0x21);
801
802 if (req->do_signing) {
803 status = smb2_signing_sign_pdu(req->session->session_key,
804 state->vector, 3);
805 if (!NT_STATUS_IS_OK(status)) {
806 return status;
807 }
808 }
809
810 subreq = tstream_writev_queue_send(state,
811 req->sconn->smb2.event_ctx,
812 req->sconn->smb2.stream,
813 req->sconn->smb2.send_queue,
814 state->vector,
815 3);
816
817 if (subreq == NULL) {
818 return NT_STATUS_NO_MEMORY;
819 }
820
821 tevent_req_set_callback(subreq,
822 smbd_smb2_request_pending_writev_done,
823 state);
824
825 /* Note we're going async with this request. */
826 req->async = true;
827
828 /*
829 * Now manipulate req so that the outstanding async request
830 * is the only one left in the struct smbd_smb2_request.
831 */
832
833 if (req->current_idx == 1) {
834 /* There was only one. */
835 goto out;
836 }
837
838 /* Re-arrange the in.vectors. */
839 req->in.vector[1] = req->in.vector[i];
840 req->in.vector[2] = req->in.vector[i+1];
841 req->in.vector[3] = req->in.vector[i+2];
842 req->in.vector_count = 4;
843 /* Reset the new in size. */
844 smb2_setup_nbt_length(req->in.vector, 4);
845
846 /* Now recreate the out.vectors. */
847 outvec = talloc_zero_array(req, struct iovec, 4);
848 if (!outvec) {
849 return NT_STATUS_NO_MEMORY;
850 }
851
852 /* 0 is always boilerplate and must
853 * be of size 4 for the length field. */
854
855 outvec[0].iov_base = req->out.nbt_hdr;
856 outvec[0].iov_len = 4;
857 SIVAL(req->out.nbt_hdr, 0, 0);
858
859 if (!dup_smb2_vec3(outvec, &outvec[1], &req->out.vector[i])) {
860 return NT_STATUS_NO_MEMORY;
861 }
862
863 TALLOC_FREE(req->out.vector);
864
865 req->out.vector = outvec;
866
867 req->current_idx = 1;
868 req->out.vector_count = 4;
869
870 out:
871
872 smb2_setup_nbt_length(req->out.vector,
873 req->out.vector_count);
874
875 /* Ensure our final reply matches the interim one. */
876 reqhdr = (uint8_t *)req->out.vector[1].iov_base;
877 SIVAL(reqhdr, SMB2_HDR_FLAGS, flags | SMB2_HDR_FLAG_ASYNC);
878 SBVAL(reqhdr, SMB2_HDR_PID, async_id);
879 /* Only return credits on the interim response. */
880 SSVAL(reqhdr, SMB2_HDR_CREDIT, 0);
881
882 {
883 const uint8_t *inhdr =
884 (const uint8_t *)req->in.vector[1].iov_base;
885 DEBUG(10,("smbd_smb2_request_pending_queue: opcode[%s] mid %llu "
886 "going async\n",
887 smb2_opcode_name((uint16_t)IVAL(inhdr, SMB2_HDR_OPCODE)),
888 (unsigned long long)async_id ));
889 }
890 return NT_STATUS_OK;
891 }
892
893 static NTSTATUS smbd_smb2_request_process_cancel(struct smbd_smb2_request *req)
894 {
895 struct smbd_server_connection *sconn = req->sconn;
896 struct smbd_smb2_request *cur;
897 const uint8_t *inhdr;
898 int i = req->current_idx;
899 uint32_t flags;
900 uint64_t search_message_id;
901 uint64_t search_async_id;
902 uint64_t found_id;
903
904 inhdr = (const uint8_t *)req->in.vector[i].iov_base;
905
906 flags = IVAL(inhdr, SMB2_HDR_FLAGS);
907 search_message_id = BVAL(inhdr, SMB2_HDR_MESSAGE_ID);
908 search_async_id = BVAL(inhdr, SMB2_HDR_PID);
909
910 /*
911 * we don't need the request anymore
912 * cancel requests never have a response
913 */
914 DLIST_REMOVE(req->sconn->smb2.requests, req);
915 TALLOC_FREE(req);
916
917 for (cur = sconn->smb2.requests; cur; cur = cur->next) {
918 const uint8_t *outhdr;
919 uint64_t message_id;
920 uint64_t async_id;
921
922 i = cur->current_idx;
923
924 outhdr = (const uint8_t *)cur->out.vector[i].iov_base;
925
926 message_id = BVAL(outhdr, SMB2_HDR_MESSAGE_ID);
927 async_id = BVAL(outhdr, SMB2_HDR_PID);
928
929 if (flags & SMB2_HDR_FLAG_ASYNC) {
930 if (search_async_id == async_id) {
931 found_id = async_id;
932 break;
933 }
934 } else {
935 if (search_message_id == message_id) {
936 found_id = message_id;
937 break;
938 }
939 }
940 }
941
942 if (cur && cur->subreq) {
943 inhdr = (const uint8_t *)cur->in.vector[i].iov_base;
944 DEBUG(10,("smbd_smb2_request_process_cancel: attempting to "
945 "cancel opcode[%s] mid %llu\n",
946 smb2_opcode_name((uint16_t)IVAL(inhdr, SMB2_HDR_OPCODE)),
947 (unsigned long long)found_id ));
948 tevent_req_cancel(cur->subreq);
949 }
950
951 return NT_STATUS_OK;
952 }
953
954 NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req)
955 {
956 const uint8_t *inhdr;
957 int i = req->current_idx;
958 uint16_t opcode;
959 uint32_t flags;
960 uint64_t mid;
961 NTSTATUS status;
962 NTSTATUS session_status;
963 uint32_t allowed_flags;
964 NTSTATUS return_value;
965
966 inhdr = (const uint8_t *)req->in.vector[i].iov_base;
967
968 /* TODO: verify more things */
969
970 flags = IVAL(inhdr, SMB2_HDR_FLAGS);
971 opcode = IVAL(inhdr, SMB2_HDR_OPCODE);
972 mid = BVAL(inhdr, SMB2_HDR_MESSAGE_ID);
973 DEBUG(10,("smbd_smb2_request_dispatch: opcode[%s] mid = %llu\n",
974 smb2_opcode_name(opcode),
975 (unsigned long long)mid));
976
977 allowed_flags = SMB2_HDR_FLAG_CHAINED |
978 SMB2_HDR_FLAG_SIGNED |
979 SMB2_HDR_FLAG_DFS;
980 if (opcode == SMB2_OP_CANCEL) {
981 allowed_flags |= SMB2_HDR_FLAG_ASYNC;
982 }
983 if ((flags & ~allowed_flags) != 0) {
984 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
985 }
986
987 session_status = smbd_smb2_request_check_session(req);
988
989 req->do_signing = false;
990 if (flags & SMB2_HDR_FLAG_SIGNED) {
991 if (!NT_STATUS_IS_OK(session_status)) {
992 return smbd_smb2_request_error(req, session_status);
993 }
994
995 req->do_signing = true;
996 status = smb2_signing_check_pdu(req->session->session_key,
997 &req->in.vector[i], 3);
998 if (!NT_STATUS_IS_OK(status)) {
999 return smbd_smb2_request_error(req, status);
1000 }
1001 } else if (req->session && req->session->do_signing) {
1002 return smbd_smb2_request_error(req, NT_STATUS_ACCESS_DENIED);
1003 }
1004
1005 if (flags & SMB2_HDR_FLAG_CHAINED) {
1006 /*
1007 * This check is mostly for giving the correct error code
1008 * for compounded requests.
1009 *
1010 * TODO: we may need to move this after the session
1011 * and tcon checks.
1012 */
1013 if (!NT_STATUS_IS_OK(req->next_status)) {
1014 return smbd_smb2_request_error(req, req->next_status);
1015 }
1016 } else {
1017 req->compat_chain_fsp = NULL;
1018 }
1019
1020 switch (opcode) {
1021 case SMB2_OP_NEGPROT:
1022 {
1023 START_PROFILE(smb2_negprot);
1024 return_value = smbd_smb2_request_process_negprot(req);
1025 END_PROFILE(smb2_negprot);
1026 }
1027 break;
1028
1029 case SMB2_OP_SESSSETUP:
1030 {
1031 START_PROFILE(smb2_sesssetup);
1032 return_value = smbd_smb2_request_process_sesssetup(req);
1033 END_PROFILE(smb2_sesssetup);
1034 }
1035 break;
1036
1037 case SMB2_OP_LOGOFF:
1038 if (!NT_STATUS_IS_OK(session_status)) {
1039 return_value = smbd_smb2_request_error(req, session_status);
1040 break;
1041 }
1042
1043 {
1044 START_PROFILE(smb2_logoff);
1045 return_value = smbd_smb2_request_process_logoff(req);
1046 END_PROFILE(smb2_logoff);
1047 }
1048 break;
1049
1050 case SMB2_OP_TCON:
1051 if (!NT_STATUS_IS_OK(session_status)) {
1052 return_value = smbd_smb2_request_error(req, session_status);
1053 break;
1054 }
1055 status = smbd_smb2_request_check_session(req);
1056 if (!NT_STATUS_IS_OK(status)) {
1057 return_value = smbd_smb2_request_error(req, status);
1058 break;
1059 }
1060
1061 {
1062 START_PROFILE(smb2_tcon);
1063 return_value = smbd_smb2_request_process_tcon(req);
1064 END_PROFILE(smb2_tcon);
1065 }
1066 break;
1067
1068 case SMB2_OP_TDIS:
1069 if (!NT_STATUS_IS_OK(session_status)) {
1070 return_value = smbd_smb2_request_error(req, session_status);
1071 break;
1072 }
1073 status = smbd_smb2_request_check_tcon(req);
1074 if (!NT_STATUS_IS_OK(status)) {
1075 return_value = smbd_smb2_request_error(req, status);
1076 break;
1077 }
1078
1079 {
1080 START_PROFILE(smb2_tdis);
1081 return_value = smbd_smb2_request_process_tdis(req);
1082 END_PROFILE(smb2_tdis);
1083 }
1084 break;
1085
1086 case SMB2_OP_CREATE:
1087 if (!NT_STATUS_IS_OK(session_status)) {
1088 return_value = smbd_smb2_request_error(req, session_status);
1089 break;
1090 }
1091 status = smbd_smb2_request_check_tcon(req);
1092 if (!NT_STATUS_IS_OK(status)) {
1093 return_value = smbd_smb2_request_error(req, status);
1094 break;
1095 }
1096
1097 {
1098 START_PROFILE(smb2_create);
1099 return_value = smbd_smb2_request_process_create(req);
1100 END_PROFILE(smb2_create);
1101 }
1102 break;
1103
1104 case SMB2_OP_CLOSE:
1105 if (!NT_STATUS_IS_OK(session_status)) {
1106 return_value = smbd_smb2_request_error(req, session_status);
1107 break;
1108 }
1109 status = smbd_smb2_request_check_tcon(req);
1110 if (!NT_STATUS_IS_OK(status)) {
1111 return_value = smbd_smb2_request_error(req, status);
1112 break;
1113 }
1114
1115 {
1116 START_PROFILE(smb2_close);
1117 return_value = smbd_smb2_request_process_close(req);
1118 END_PROFILE(smb2_close);
1119 }
1120 break;
1121
1122 case SMB2_OP_FLUSH:
1123 if (!NT_STATUS_IS_OK(session_status)) {
1124 return_value = smbd_smb2_request_error(req, session_status);
1125 break;
1126 }
1127 status = smbd_smb2_request_check_tcon(req);
1128 if (!NT_STATUS_IS_OK(status)) {
1129 return_value = smbd_smb2_request_error(req, status);
1130 break;
1131 }
1132
1133 {
1134 START_PROFILE(smb2_flush);
1135 return_value = smbd_smb2_request_process_flush(req);
1136 END_PROFILE(smb2_flush);
1137 }
1138 break;
1139
1140 case SMB2_OP_READ:
1141 if (!NT_STATUS_IS_OK(session_status)) {
1142 return_value = smbd_smb2_request_error(req, session_status);
1143 break;
1144 }
1145 status = smbd_smb2_request_check_tcon(req);
1146 if (!NT_STATUS_IS_OK(status)) {
1147 return_value = smbd_smb2_request_error(req, status);
1148 break;
1149 }
1150
1151 {
1152 START_PROFILE(smb2_read);
1153 return_value = smbd_smb2_request_process_read(req);
1154 END_PROFILE(smb2_read);
1155 }
1156 break;
1157
1158 case SMB2_OP_WRITE:
1159 if (!NT_STATUS_IS_OK(session_status)) {
1160 return_value = smbd_smb2_request_error(req, session_status);
1161 break;
1162 }
1163 status = smbd_smb2_request_check_tcon(req);
1164 if (!NT_STATUS_IS_OK(status)) {
1165 return_value = smbd_smb2_request_error(req, status);
1166 break;
1167 }
1168
1169 {
1170 START_PROFILE(smb2_write);
1171 return_value = smbd_smb2_request_process_write(req);
1172 END_PROFILE(smb2_write);
1173 }
1174 break;
1175
1176 case SMB2_OP_LOCK:
1177 if (!NT_STATUS_IS_OK(session_status)) {
1178 /* Too ugly to live ? JRA. */
1179 if (NT_STATUS_EQUAL(session_status,NT_STATUS_USER_SESSION_DELETED)) {
1180 session_status = NT_STATUS_FILE_CLOSED;
1181 }
1182 return_value = smbd_smb2_request_error(req, session_status);
1183 break;
1184 }
1185 status = smbd_smb2_request_check_tcon(req);
1186 if (!NT_STATUS_IS_OK(status)) {
1187 /* Too ugly to live ? JRA. */
1188 if (NT_STATUS_EQUAL(status,NT_STATUS_NETWORK_NAME_DELETED)) {
1189 status = NT_STATUS_FILE_CLOSED;
1190 }
1191 return_value = smbd_smb2_request_error(req, status);
1192 break;
1193 }
1194
1195 {
1196 START_PROFILE(smb2_lock);
1197 return_value = smbd_smb2_request_process_lock(req);
1198 END_PROFILE(smb2_lock);
1199 }
1200 break;
1201
1202 case SMB2_OP_IOCTL:
1203 if (!NT_STATUS_IS_OK(session_status)) {
1204 return_value = smbd_smb2_request_error(req, session_status);
1205 break;
1206 }
1207 status = smbd_smb2_request_check_tcon(req);
1208 if (!NT_STATUS_IS_OK(status)) {
1209 return_value = smbd_smb2_request_error(req, status);
1210 break;
1211 }
1212
1213 {
1214 START_PROFILE(smb2_ioctl);
1215 return_value = smbd_smb2_request_process_ioctl(req);
1216 END_PROFILE(smb2_ioctl);
1217 }
1218 break;
1219
1220 case SMB2_OP_CANCEL:
1221 {
1222 START_PROFILE(smb2_cancel);
1223 return_value = smbd_smb2_request_process_cancel(req);
1224 END_PROFILE(smb2_cancel);
1225 }
1226 break;
1227
1228 case SMB2_OP_KEEPALIVE:
1229 {START_PROFILE(smb2_keepalive);
1230 return_value = smbd_smb2_request_process_keepalive(req);
1231 END_PROFILE(smb2_keepalive);}
1232 break;
1233
1234 case SMB2_OP_FIND:
1235 if (!NT_STATUS_IS_OK(session_status)) {
1236 return_value = smbd_smb2_request_error(req, session_status);
1237 break;
1238 }
1239 status = smbd_smb2_request_check_tcon(req);
1240 if (!NT_STATUS_IS_OK(status)) {
1241 return_value = smbd_smb2_request_error(req, status);
1242 break;
1243 }
1244
1245 {
1246 START_PROFILE(smb2_find);
1247 return_value = smbd_smb2_request_process_find(req);
1248 END_PROFILE(smb2_find);
1249 }
1250 break;
1251
1252 case SMB2_OP_NOTIFY:
1253 if (!NT_STATUS_IS_OK(session_status)) {
1254 return_value = smbd_smb2_request_error(req, session_status);
1255 break;
1256 }
1257 status = smbd_smb2_request_check_tcon(req);
1258 if (!NT_STATUS_IS_OK(status)) {
1259 return_value = smbd_smb2_request_error(req, status);
1260 break;
1261 }
1262
1263 {
1264 START_PROFILE(smb2_notify);
1265 return_value = smbd_smb2_request_process_notify(req);
1266 END_PROFILE(smb2_notify);
1267 }
1268 break;
1269
1270 case SMB2_OP_GETINFO:
1271 if (!NT_STATUS_IS_OK(session_status)) {
1272 return_value = smbd_smb2_request_error(req, session_status);
1273 break;
1274 }
1275 status = smbd_smb2_request_check_tcon(req);
1276 if (!NT_STATUS_IS_OK(status)) {
1277 return_value = smbd_smb2_request_error(req, status);
1278 break;
1279 }
1280
1281 {
1282 START_PROFILE(smb2_getinfo);
1283 return_value = smbd_smb2_request_process_getinfo(req);
1284 END_PROFILE(smb2_getinfo);
1285 }
1286 break;
1287
1288 case SMB2_OP_SETINFO:
1289 if (!NT_STATUS_IS_OK(session_status)) {
1290 return_value = smbd_smb2_request_error(req, session_status);
1291 break;
1292 }
1293 status = smbd_smb2_request_check_tcon(req);
1294 if (!NT_STATUS_IS_OK(status)) {
1295 return_value = smbd_smb2_request_error(req, status);
1296 break;
1297 }
1298
1299 {
1300 START_PROFILE(smb2_setinfo);
1301 return_value = smbd_smb2_request_process_setinfo(req);
1302 END_PROFILE(smb2_setinfo);
1303 }
1304 break;
1305
1306 case SMB2_OP_BREAK:
1307 if (!NT_STATUS_IS_OK(session_status)) {
1308 return_value = smbd_smb2_request_error(req, session_status);
1309 break;
1310 }
1311 status = smbd_smb2_request_check_tcon(req);
1312 if (!NT_STATUS_IS_OK(status)) {
1313 return_value = smbd_smb2_request_error(req, status);
1314 break;
1315 }
1316
1317 {
1318 START_PROFILE(smb2_break);
1319 return_value = smbd_smb2_request_process_break(req);
1320 END_PROFILE(smb2_break);
1321 }
1322 break;
1323
1324 default:
1325 return_value = smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
1326 break;
1327 }
1328 return return_value;
1329 }
1330
1331 static NTSTATUS smbd_smb2_request_reply(struct smbd_smb2_request *req)
1332 {
1333 struct tevent_req *subreq;
1334
1335 req->subreq = NULL;
1336
1337 smb2_setup_nbt_length(req->out.vector, req->out.vector_count);
1338
1339 if (req->do_signing) {
1340 int i = req->current_idx;
1341 NTSTATUS status;
1342 status = smb2_signing_sign_pdu(req->session->session_key,
1343 &req->out.vector[i], 3);
1344 if (!NT_STATUS_IS_OK(status)) {
1345 return status;
1346 }
1347 }
1348
1349 req->current_idx += 3;
1350
1351 if (req->current_idx < req->out.vector_count) {
1352 /*
1353 * We must process the remaining compound
1354 * SMB2 requests before any new incoming SMB2
1355 * requests. This is because incoming SMB2
1356 * requests may include a cancel for a
1357 * compound request we haven't processed
1358 * yet.
1359 */
1360 struct tevent_immediate *im = tevent_create_immediate(req);
1361 if (!im) {
1362 return NT_STATUS_NO_MEMORY;
1363 }
1364 tevent_schedule_immediate(im,
1365 req->sconn->smb2.event_ctx,
1366 smbd_smb2_request_dispatch_immediate,
1367 req);
1368 return NT_STATUS_OK;
1369 }
1370
1371 if (DEBUGLEVEL >= 10) {
1372 dbgtext("smbd_smb2_request_reply: sending...\n");
1373 print_req_vectors(req);
1374 }
1375
1376 subreq = tstream_writev_queue_send(req,
1377 req->sconn->smb2.event_ctx,
1378 req->sconn->smb2.stream,
1379 req->sconn->smb2.send_queue,
1380 req->out.vector,
1381 req->out.vector_count);
1382 if (subreq == NULL) {
1383 return NT_STATUS_NO_MEMORY;
1384 }
1385 tevent_req_set_callback(subreq, smbd_smb2_request_writev_done, req);
1386 /*
1387 * We're done with this request -
1388 * move it off the "being processed" queue.
1389 */
1390 DLIST_REMOVE(req->sconn->smb2.requests, req);
1391
1392 return NT_STATUS_OK;
1393 }
1394
1395 void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
1396 struct tevent_immediate *im,
1397 void *private_data)
1398 {
1399 struct smbd_smb2_request *req = talloc_get_type_abort(private_data,
1400 struct smbd_smb2_request);
1401 struct smbd_server_connection *sconn = req->sconn;
1402 NTSTATUS status;
1403
1404 TALLOC_FREE(im);
1405
1406 if (DEBUGLEVEL >= 10) {
1407 DEBUG(10,("smbd_smb2_request_dispatch_immediate: idx[%d] of %d vectors\n",
1408 req->current_idx, req->in.vector_count));
1409 print_req_vectors(req);
1410 }
1411
1412 status = smbd_smb2_request_dispatch(req);
1413 if (!NT_STATUS_IS_OK(status)) {
1414 smbd_server_connection_terminate(sconn, nt_errstr(status));
1415 return;
1416 }
1417 }
1418
1419 static void smbd_smb2_request_writev_done(struct tevent_req *subreq)
1420 {
1421 struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
1422 struct smbd_smb2_request);
1423 struct smbd_server_connection *sconn = req->sconn;
1424 int ret;
1425 int sys_errno;
1426
1427 ret = tstream_writev_queue_recv(subreq, &sys_errno);
1428 TALLOC_FREE(subreq);
1429 TALLOC_FREE(req);
1430 if (ret == -1) {
1431 NTSTATUS status = map_nt_error_from_unix(sys_errno);
1432 DEBUG(2,("smbd_smb2_request_writev_done: client write error %s\n",
1433 nt_errstr(status)));
1434 smbd_server_connection_terminate(sconn, nt_errstr(status));
1435 return;
1436 }
1437 }
1438
1439 NTSTATUS smbd_smb2_request_done_ex(struct smbd_smb2_request *req,
1440 NTSTATUS status,
1441 DATA_BLOB body, DATA_BLOB *dyn,
1442 const char *location)
1443 {
1444 uint8_t *outhdr;
1445 int i = req->current_idx;
1446 uint32_t next_command_ofs;
1447
1448 DEBUG(10,("smbd_smb2_request_done_ex: "
1449 "idx[%d] status[%s] body[%u] dyn[%s:%u] at %s\n",
1450 i, nt_errstr(status), (unsigned int)body.length,
1451 dyn ? "yes": "no",
1452 (unsigned int)(dyn ? dyn->length : 0),
1453 location));
1454
1455 if (body.length < 2) {
1456 return smbd_smb2_request_error(req, NT_STATUS_INTERNAL_ERROR);
1457 }
1458
1459 if ((body.length % 2) != 0) {
1460 return smbd_smb2_request_error(req, NT_STATUS_INTERNAL_ERROR);
1461 }
1462
1463 outhdr = (uint8_t *)req->out.vector[i].iov_base;
1464
1465 next_command_ofs = IVAL(outhdr, SMB2_HDR_NEXT_COMMAND);
1466 SIVAL(outhdr, SMB2_HDR_STATUS, NT_STATUS_V(status));
1467
1468 req->out.vector[i+1].iov_base = (void *)body.data;
1469 req->out.vector[i+1].iov_len = body.length;
1470
1471 if (dyn) {
1472 req->out.vector[i+2].iov_base = (void *)dyn->data;
1473 req->out.vector[i+2].iov_len = dyn->length;
1474 } else {
1475 req->out.vector[i+2].iov_base = NULL;
1476 req->out.vector[i+2].iov_len = 0;
1477 }
1478
1479 /* see if we need to recalculate the offset to the next response */
1480 if (next_command_ofs > 0) {
1481 next_command_ofs = SMB2_HDR_BODY;
1482 next_command_ofs += req->out.vector[i+1].iov_len;
1483 next_command_ofs += req->out.vector[i+2].iov_len;
1484 }
1485
1486 if ((next_command_ofs % 8) != 0) {
1487 size_t pad_size = 8 - (next_command_ofs % 8);
1488 if (req->out.vector[i+2].iov_len == 0) {
1489 /*
1490 * if the dyn buffer is empty
1491 * we can use it to add padding
1492 */
1493 uint8_t *pad;
1494
1495 pad = talloc_zero_array(req->out.vector,
1496 uint8_t, pad_size);
1497 if (pad == NULL) {
1498 return smbd_smb2_request_error(req,
1499 NT_STATUS_NO_MEMORY);
1500 }
1501
1502 req->out.vector[i+2].iov_base = (void *)pad;
1503 req->out.vector[i+2].iov_len = pad_size;
1504 } else {
1505 /*
1506 * For now we copy the dynamic buffer
1507 * and add the padding to the new buffer
1508 */
1509 size_t old_size;
1510 uint8_t *old_dyn;
1511 size_t new_size;
1512 uint8_t *new_dyn;
1513
1514 old_size = req->out.vector[i+2].iov_len;
1515 old_dyn = (uint8_t *)req->out.vector[i+2].iov_base;
1516
1517 new_size = old_size + pad_size;
1518 new_dyn = talloc_zero_array(req->out.vector,
1519 uint8_t, new_size);
1520 if (new_dyn == NULL) {
1521 return smbd_smb2_request_error(req,
1522 NT_STATUS_NO_MEMORY);
1523 }
1524
1525 memcpy(new_dyn, old_dyn, old_size);
1526 memset(new_dyn + old_size, 0, pad_size);
1527
1528 req->out.vector[i+2].iov_base = (void *)new_dyn;
1529 req->out.vector[i+2].iov_len = new_size;
1530 }
1531 next_command_ofs += pad_size;
1532 }
1533
1534 SIVAL(outhdr, SMB2_HDR_NEXT_COMMAND, next_command_ofs);
1535
1536 return smbd_smb2_request_reply(req);
1537 }
1538
1539 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
1540 NTSTATUS status,
1541 DATA_BLOB *info,
1542 const char *location)
1543 {
1544 DATA_BLOB body;
1545 int i = req->current_idx;
1546 uint8_t *outhdr = (uint8_t *)req->out.vector[i].iov_base;
1547
1548 DEBUG(10,("smbd_smb2_request_error_ex: idx[%d] status[%s] |%s| at %s\n",
1549 i, nt_errstr(status), info ? " +info" : "",
1550 location));
1551
1552 body.data = outhdr + SMB2_HDR_BODY;
1553 body.length = 8;
1554 SSVAL(body.data, 0, 9);
1555
1556 if (info) {
1557 SIVAL(body.data, 0x04, info->length);
1558 } else {
1559 /* Allocated size of req->out.vector[i].iov_base
1560 * *MUST BE* OUTVEC_ALLOC_SIZE. So we have room for
1561 * 1 byte without having to do an alloc.
1562 */
1563 info = talloc_zero_array(req->out.vector,
1564 DATA_BLOB,
1565 1);
1566 if (!info) {
1567 return NT_STATUS_NO_MEMORY;
1568 }
1569 info->data = ((uint8_t *)outhdr) +
1570 OUTVEC_ALLOC_SIZE - 1;
1571 info->length = 1;
1572 SCVAL(info->data, 0, 0);
1573 }
1574
1575 /*
1576 * if a request fails, all other remaining
1577 * compounded requests should fail too
1578 */
1579 req->next_status = NT_STATUS_INVALID_PARAMETER;
1580
1581 return smbd_smb2_request_done_ex(req, status, body, info, __location__);
1582 }
1583
1584
1585 struct smbd_smb2_send_oplock_break_state {
1586 struct smbd_server_connection *sconn;
1587 uint8_t buf[4 + SMB2_HDR_BODY + 0x18];
1588 struct iovec vector;
1589 };
1590
1591 static void smbd_smb2_oplock_break_writev_done(struct tevent_req *subreq);
1592
1593 NTSTATUS smbd_smb2_send_oplock_break(struct smbd_server_connection *sconn,
1594 uint64_t file_id_persistent,
1595 uint64_t file_id_volatile,
1596 uint8_t oplock_level)
1597 {
1598 struct smbd_smb2_send_oplock_break_state *state;
1599 struct tevent_req *subreq;
1600 uint8_t *hdr;
1601 uint8_t *body;
1602
1603 state = talloc(sconn, struct smbd_smb2_send_oplock_break_state);
1604 if (state == NULL) {
1605 return NT_STATUS_NO_MEMORY;
1606 }
1607 state->sconn = sconn;
1608
1609 state->vector.iov_base = (void *)state->buf;
1610 state->vector.iov_len = sizeof(state->buf);
1611
1612 _smb2_setlen(state->buf, sizeof(state->buf) - 4);
1613 hdr = state->buf + 4;
1614 body = hdr + SMB2_HDR_BODY;
1615
1616 SIVAL(hdr, 0, SMB2_MAGIC);
1617 SSVAL(hdr, SMB2_HDR_LENGTH, SMB2_HDR_BODY);
1618 SSVAL(hdr, SMB2_HDR_EPOCH, 0);
1619 SIVAL(hdr, SMB2_HDR_STATUS, 0);
1620 SSVAL(hdr, SMB2_HDR_OPCODE, SMB2_OP_BREAK);
1621 SSVAL(hdr, SMB2_HDR_CREDIT, 0);
1622 SIVAL(hdr, SMB2_HDR_FLAGS, SMB2_HDR_FLAG_REDIRECT);
1623 SIVAL(hdr, SMB2_HDR_NEXT_COMMAND, 0);
1624 SBVAL(hdr, SMB2_HDR_MESSAGE_ID, UINT64_MAX);
1625 SIVAL(hdr, SMB2_HDR_PID, 0);
1626 SIVAL(hdr, SMB2_HDR_TID, 0);
1627 SBVAL(hdr, SMB2_HDR_SESSION_ID, 0);
1628 memset(hdr+SMB2_HDR_SIGNATURE, 0, 16);
1629
1630 SSVAL(body, 0x00, 0x18);
1631
1632 SCVAL(body, 0x02, oplock_level);
1633 SCVAL(body, 0x03, 0); /* reserved */
1634 SIVAL(body, 0x04, 0); /* reserved */
1635 SBVAL(body, 0x08, file_id_persistent);
1636 SBVAL(body, 0x10, file_id_volatile);
1637
1638 subreq = tstream_writev_queue_send(state,
1639 sconn->smb2.event_ctx,
1640 sconn->smb2.stream,
1641 sconn->smb2.send_queue,
1642 &state->vector, 1);
1643 if (subreq == NULL) {
1644 return NT_STATUS_NO_MEMORY;
1645 }
1646 tevent_req_set_callback(subreq,
1647 smbd_smb2_oplock_break_writev_done,
1648 state);
1649
1650 return NT_STATUS_OK;
1651 }
1652
1653 static void smbd_smb2_oplock_break_writev_done(struct tevent_req *subreq)
1654 {
1655 struct smbd_smb2_send_oplock_break_state *state =
1656 tevent_req_callback_data(subreq,
1657 struct smbd_smb2_send_oplock_break_state);
1658 struct smbd_server_connection *sconn = state->sconn;
1659 int ret;
1660 int sys_errno;
1661
1662 ret = tstream_writev_queue_recv(subreq, &sys_errno);
1663 TALLOC_FREE(subreq);
1664 if (ret == -1) {
1665 NTSTATUS status = map_nt_error_from_unix(sys_errno);
1666 smbd_server_connection_terminate(sconn, nt_errstr(status));
1667 return;
1668 }
1669
1670 TALLOC_FREE(state);
1671 }
1672
1673 struct smbd_smb2_request_read_state {
1674 size_t missing;
1675 bool asked_for_header;
1676 struct smbd_smb2_request *smb2_req;
1677 };
1678
1679 static int smbd_smb2_request_next_vector(struct tstream_context *stream,
1680 void *private_data,
1681 TALLOC_CTX *mem_ctx,
1682 struct iovec **_vector,
1683 size_t *_count);
1684 static void smbd_smb2_request_read_done(struct tevent_req *subreq);
1685
1686 static struct tevent_req *smbd_smb2_request_read_send(TALLOC_CTX *mem_ctx,
1687 struct tevent_context *ev,
1688 struct smbd_server_connection *sconn)
1689 {
1690 struct tevent_req *req;
1691 struct smbd_smb2_request_read_state *state;
1692 struct tevent_req *subreq;
1693
1694 req = tevent_req_create(mem_ctx, &state,
1695 struct smbd_smb2_request_read_state);
1696 if (req == NULL) {
1697 return NULL;
1698 }
1699 state->missing = 0;
1700 state->asked_for_header = false;
1701
1702 state->smb2_req = smbd_smb2_request_allocate(state);
1703 if (tevent_req_nomem(state->smb2_req, req)) {
1704 return tevent_req_post(req, ev);
1705 }
1706 state->smb2_req->sconn = sconn;
1707
1708 subreq = tstream_readv_pdu_queue_send(state, ev, sconn->smb2.stream,
1709 sconn->smb2.recv_queue,
1710 smbd_smb2_request_next_vector,
1711 state);
1712 if (tevent_req_nomem(subreq, req)) {
1713 return tevent_req_post(req, ev);
1714 }
1715 tevent_req_set_callback(subreq, smbd_smb2_request_read_done, req);
1716
1717 return req;
1718 }
1719
1720 static int smbd_smb2_request_next_vector(struct tstream_context *stream,
1721 void *private_data,
1722 TALLOC_CTX *mem_ctx,
1723 struct iovec **_vector,
1724 size_t *_count)
1725 {
1726 struct smbd_smb2_request_read_state *state =
1727 talloc_get_type_abort(private_data,
1728 struct smbd_smb2_request_read_state);
1729 struct smbd_smb2_request *req = state->smb2_req;
1730 struct iovec *vector;
1731 int idx = req->in.vector_count;
1732 size_t len = 0;
1733 uint8_t *buf = NULL;
1734
1735 if (req->in.vector_count == 0) {
1736 /*
1737 * first we need to get the NBT header
1738 */
1739 req->in.vector = talloc_array(req, struct iovec,
1740 req->in.vector_count + 1);
1741 if (req->in.vector == NULL) {
1742 return -1;
1743 }
1744 req->in.vector_count += 1;
1745
1746 req->in.vector[idx].iov_base = (void *)req->in.nbt_hdr;
1747 req->in.vector[idx].iov_len = 4;
1748
1749 vector = talloc_array(mem_ctx, struct iovec, 1);
1750 if (vector == NULL) {
1751 return -1;
1752 }
1753
1754 vector[0] = req->in.vector[idx];
1755
1756 *_vector = vector;
1757 *_count = 1;
1758 return 0;
1759 }
1760
1761 if (req->in.vector_count == 1) {
1762 /*
1763 * Now we analyze the NBT header
1764 */
1765 state->missing = smb2_len(req->in.vector[0].iov_base);
1766
1767 if (state->missing == 0) {
1768 /* if there're no remaining bytes, we're done */
1769 *_vector = NULL;
1770 *_count = 0;
1771 return 0;
1772 }
1773
1774 req->in.vector = talloc_realloc(req, req->in.vector,
1775 struct iovec,
1776 req->in.vector_count + 1);
1777 if (req->in.vector == NULL) {
1778 return -1;
1779 }
1780 req->in.vector_count += 1;
1781
1782 if (CVAL(req->in.vector[0].iov_base, 0) != 0) {
1783 /*
1784 * it's a special NBT message,
1785 * so get all remaining bytes
1786 */
1787 len = state->missing;
1788 } else if (state->missing < (SMB2_HDR_BODY + 2)) {
1789 /*
1790 * it's an invalid message, just read what we can get
1791 * and let the caller handle the error
1792 */
1793 len = state->missing;
1794 } else {
1795 /*
1796 * We assume it's a SMB2 request,
1797 * and we first get the header and the
1798 * first 2 bytes (the struct size) of the body
1799 */
1800 len = SMB2_HDR_BODY + 2;
1801
1802 state->asked_for_header = true;
1803 }
1804
1805 state->missing -= len;
1806
1807 buf = talloc_array(req->in.vector, uint8_t, len);
1808 if (buf == NULL) {
1809 return -1;
1810 }
1811
1812 req->in.vector[idx].iov_base = (void *)buf;
1813 req->in.vector[idx].iov_len = len;
1814
1815 vector = talloc_array(mem_ctx, struct iovec, 1);
1816 if (vector == NULL) {
1817 return -1;
1818 }
1819
1820 vector[0] = req->in.vector[idx];
1821
1822 *_vector = vector;
1823 *_count = 1;
1824 return 0;
1825 }
1826
1827 if (state->missing == 0) {
1828 /* if there're no remaining bytes, we're done */
1829 *_vector = NULL;
1830 *_count = 0;
1831 return 0;
1832 }
1833
1834 if (state->asked_for_header) {
1835 const uint8_t *hdr;
1836 size_t full_size;
1837 size_t next_command_ofs;
1838 size_t body_size;
1839 uint8_t *body;
1840 size_t dyn_size;
1841 uint8_t *dyn;
1842 bool invalid = false;
1843
1844 state->asked_for_header = false;
1845
1846 /*
1847 * We got the SMB2 header and the first 2 bytes
1848 * of the body. We fix the size to just the header
1849 * and manually copy the 2 first bytes to the body section
1850 */
1851 req->in.vector[idx-1].iov_len = SMB2_HDR_BODY;
1852 hdr = (const uint8_t *)req->in.vector[idx-1].iov_base;
1853
1854 /* allocate vectors for body and dynamic areas */
1855 req->in.vector = talloc_realloc(req, req->in.vector,
1856 struct iovec,
1857 req->in.vector_count + 2);
1858 if (req->in.vector == NULL) {
1859 return -1;
1860 }
1861 req->in.vector_count += 2;
1862
1863 full_size = state->missing + SMB2_HDR_BODY + 2;
1864 next_command_ofs = IVAL(hdr, SMB2_HDR_NEXT_COMMAND);
1865 body_size = SVAL(hdr, SMB2_HDR_BODY);
1866
1867 if (next_command_ofs != 0) {
1868 if (next_command_ofs < (SMB2_HDR_BODY + 2)) {
1869 /*
1870 * this is invalid, just return a zero
1871 * body and let the caller deal with the error
1872 */
1873 invalid = true;
1874 } else if (next_command_ofs > full_size) {
1875 /*
1876 * this is invalid, just return a zero
1877 * body and let the caller deal with the error
1878 */
1879 invalid = true;
1880 } else {
1881 full_size = next_command_ofs;
1882 }
1883 }
1884
1885 if (!invalid) {
1886 if (body_size < 2) {
1887 /*
1888 * this is invalid, just return a zero
1889 * body and let the caller deal with the error
1890 */
1891 invalid = true;
1892 }
1893
1894 if ((body_size % 2) != 0) {
1895 body_size -= 1;
1896 }
1897
1898 if (body_size > (full_size - SMB2_HDR_BODY)) {
1899 /*
1900 * this is invalid, just return a zero
1901 * body and let the caller deal with the error
1902 */
1903 invalid = true;
1904 }
1905 }
1906
1907 if (invalid) {
1908 /* the caller should check this */
1909 body_size = 2;
1910 }
1911
1912 dyn_size = full_size - (SMB2_HDR_BODY + body_size);
1913
1914 state->missing -= (body_size - 2) + dyn_size;
1915
1916 body = talloc_array(req->in.vector, uint8_t, body_size);
1917 if (body == NULL) {
1918 return -1;
1919 }
1920
1921 dyn = talloc_array(req->in.vector, uint8_t, dyn_size);
1922 if (dyn == NULL) {
1923 return -1;
1924 }
1925
1926 req->in.vector[idx].iov_base = (void *)body;
1927 req->in.vector[idx].iov_len = body_size;
1928 req->in.vector[idx+1].iov_base = (void *)dyn;
1929 req->in.vector[idx+1].iov_len = dyn_size;
1930
1931 vector = talloc_array(mem_ctx, struct iovec, 2);
1932 if (vector == NULL) {
1933 return -1;
1934 }
1935
1936 /*
1937 * the first 2 bytes of the body were already fetched
1938 * together with the header
1939 */
1940 memcpy(body, hdr + SMB2_HDR_BODY, 2);
1941 vector[0].iov_base = body + 2;
1942 vector[0].iov_len = body_size - 2;
1943
1944 vector[1] = req->in.vector[idx+1];
1945
1946 *_vector = vector;
1947 *_count = 2;
1948 return 0;
1949 }
1950
1951 /*
1952 * when we endup here, we're looking for a new SMB2 request
1953 * next. And we ask for its header and the first 2 bytes of
1954 * the body (like we did for the first SMB2 request).
1955 */
1956
1957 req->in.vector = talloc_realloc(req, req->in.vector,
1958 struct iovec,
1959 req->in.vector_count + 1);
1960 if (req->in.vector == NULL) {
1961 return -1;
1962 }
1963 req->in.vector_count += 1;
1964
1965 /*
1966 * We assume it's a SMB2 request,
1967 * and we first get the header and the
1968 * first 2 bytes (the struct size) of the body
1969 */
1970 len = SMB2_HDR_BODY + 2;
1971
1972 if (len > state->missing) {
1973 /* let the caller handle the error */
1974 len = state->missing;
1975 }
1976
1977 state->missing -= len;
1978 state->asked_for_header = true;
1979
1980 buf = talloc_array(req->in.vector, uint8_t, len);
1981 if (buf == NULL) {
1982 return -1;
1983 }
1984
1985 req->in.vector[idx].iov_base = (void *)buf;
1986 req->in.vector[idx].iov_len = len;
1987
1988 vector = talloc_array(mem_ctx, struct iovec, 1);
1989 if (vector == NULL) {
1990 return -1;
1991 }
1992
1993 vector[0] = req->in.vector[idx];
1994
1995 *_vector = vector;
1996 *_count = 1;
1997 return 0;
1998 }
1999
2000 static void smbd_smb2_request_read_done(struct tevent_req *subreq)
2001 {
2002 struct tevent_req *req =
2003 tevent_req_callback_data(subreq,
2004 struct tevent_req);
2005 int ret;
2006 int sys_errno;
2007 NTSTATUS status;
2008
2009 ret = tstream_readv_pdu_queue_recv(subreq, &sys_errno);
2010 if (ret == -1) {
2011 status = map_nt_error_from_unix(sys_errno);
2012 tevent_req_nterror(req, status);
2013 return;
2014 }
2015
2016 tevent_req_done(req);
2017 }
2018
2019 static NTSTATUS smbd_smb2_request_read_recv(struct tevent_req *req,
2020 TALLOC_CTX *mem_ctx,
2021 struct smbd_smb2_request **_smb2_req)
2022 {
2023 struct smbd_smb2_request_read_state *state =
2024 tevent_req_data(req,
2025 struct smbd_smb2_request_read_state);
2026 NTSTATUS status;
2027
2028 if (tevent_req_is_nterror(req, &status)) {
2029 tevent_req_received(req);
2030 return status;
2031 }
2032
2033 talloc_steal(mem_ctx, state->smb2_req->mem_pool);
2034 *_smb2_req = state->smb2_req;
2035 tevent_req_received(req);
2036 return NT_STATUS_OK;
2037 }
2038
2039 static void smbd_smb2_request_incoming(struct tevent_req *subreq);
2040
2041 void smbd_smb2_first_negprot(struct smbd_server_connection *sconn,
2042 const uint8_t *inbuf, size_t size)
2043 {
2044 NTSTATUS status;
2045 struct smbd_smb2_request *req = NULL;
2046 struct tevent_req *subreq;
2047
2048 if (lp_security() == SEC_SHARE) {
2049 DEBUG(2,("WARNING!!: \"security = share\" is deprecated for "
2050 "SMB2 servers. Mapping to \"security = user\" and "
2051 "\"map to guest = Bad User\"\n" ));
2052 lp_do_parameter(-1, "security", "user");
2053 lp_do_parameter(-1, "map to guest", "Bad User");
2054 }
2055
2056 DEBUG(10,("smbd_smb2_first_negprot: packet length %u\n",
2057 (unsigned int)size));
2058
2059 status = smbd_initialize_smb2(sconn);
2060 if (!NT_STATUS_IS_OK(status)) {
2061 smbd_server_connection_terminate(sconn, nt_errstr(status));
2062 return;
2063 }
2064
2065 status = smbd_smb2_request_create(sconn, inbuf, size, &req);
2066 if (!NT_STATUS_IS_OK(status)) {
2067 smbd_server_connection_terminate(sconn, nt_errstr(status));
2068 return;
2069 }
2070
2071 status = smbd_smb2_request_setup_out(req, 1);
2072 if (!NT_STATUS_IS_OK(status)) {
2073 smbd_server_connection_terminate(sconn, nt_errstr(status));
2074 return;
2075 }
2076
2077 status = smbd_smb2_request_dispatch(req);
2078 if (!NT_STATUS_IS_OK(status)) {
2079 smbd_server_connection_terminate(sconn, nt_errstr(status));
2080 return;
2081 }
2082
2083 /* ask for the next request */
2084 subreq = smbd_smb2_request_read_send(sconn, sconn->smb2.event_ctx, sconn);
2085 if (subreq == NULL) {
2086 smbd_server_connection_terminate(sconn, "no memory for reading");
2087 return;
2088 }
2089 tevent_req_set_callback(subreq, smbd_smb2_request_incoming, sconn);
2090 }
2091
2092 static void smbd_smb2_request_incoming(struct tevent_req *subreq)
2093 {
2094 uint16_t creds_requested = 0;
2095 struct smbd_server_connection *sconn = tevent_req_callback_data(subreq,
2096 struct smbd_server_connection);
2097 NTSTATUS status;
2098 struct smbd_smb2_request *req = NULL;
2099
2100 status = smbd_smb2_request_read_recv(subreq, sconn, &req);
2101 TALLOC_FREE(subreq);
2102 if (!NT_STATUS_IS_OK(status)) {
2103 DEBUG(2,("smbd_smb2_request_incoming: client read error %s\n",
2104 nt_errstr(status)));
2105 smbd_server_connection_terminate(sconn, nt_errstr(status));
2106 return;
2107 }
2108
2109 if (req->in.nbt_hdr[0] != 0x00) {
2110 DEBUG(1,("smbd_smb2_request_incoming: ignore NBT[0x%02X] msg\n",
2111 req->in.nbt_hdr[0]));
2112 TALLOC_FREE(req);
2113 goto next;
2114 }
2115
2116 req->current_idx = 1;
2117
2118 DEBUG(10,("smbd_smb2_request_incoming: idx[%d] of %d vectors\n",
2119 req->current_idx, req->in.vector_count));
2120
2121 status = smbd_smb2_request_validate(req, &creds_requested);
2122 if (!NT_STATUS_IS_OK(status)) {
2123 smbd_server_connection_terminate(sconn, nt_errstr(status));
2124 return;
2125 }
2126
2127 status = smbd_smb2_request_setup_out(req, 5);
2128 if (!NT_STATUS_IS_OK(status)) {
2129 smbd_server_connection_terminate(sconn, nt_errstr(status));
2130 return;
2131 }
2132
2133 status = smbd_smb2_request_dispatch(req);
2134 if (!NT_STATUS_IS_OK(status)) {
2135 smbd_server_connection_terminate(sconn, nt_errstr(status));
2136 return;
2137 }
2138
2139 next:
2140 /* ask for the next request (this constructs the main loop) */
2141 subreq = smbd_smb2_request_read_send(sconn, sconn->smb2.event_ctx, sconn);
2142 if (subreq == NULL) {
2143 smbd_server_connection_terminate(sconn, "no memory for reading");
2144 return;
2145 }
2146 tevent_req_set_callback(subreq, smbd_smb2_request_incoming, sconn);
2147 }
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