2 Unix SMB/CIFS implementation.
5 Copyright (C) Stefan Metzmacher 2009
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.
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.
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/>.
22 #include "smbd/globals.h"
23 #include "../libcli/smb/smb_common.h"
24 #include "../lib/tsocket/tsocket.h"
26 static const char *smb2_names[] = {
48 const char *smb2_opcode_name(uint16_t opcode)
51 return "Bad SMB2 opcode";
53 return smb2_names[opcode];
56 static void print_req_vectors(struct smbd_smb2_request *req)
60 for (i = 0; i < req->in.vector_count; i++) {
61 dbgtext("\treq->in.vector[%u].iov_len = %u\n",
63 (unsigned int)req->in.vector[i].iov_len);
65 for (i = 0; i < req->out.vector_count; i++) {
66 dbgtext("\treq->out.vector[%u].iov_len = %u\n",
68 (unsigned int)req->out.vector[i].iov_len);
72 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size)
74 if (size < (4 + SMB2_HDR_BODY)) {
78 if (IVAL(inbuf, 4) != SMB2_MAGIC) {
85 static NTSTATUS smbd_initialize_smb2(struct smbd_server_connection *sconn)
90 TALLOC_FREE(sconn->smb1.fde);
92 sconn->smb2.event_ctx = smbd_event_context();
94 sconn->smb2.recv_queue = tevent_queue_create(sconn, "smb2 recv queue");
95 if (sconn->smb2.recv_queue == NULL) {
96 return NT_STATUS_NO_MEMORY;
99 sconn->smb2.send_queue = tevent_queue_create(sconn, "smb2 send queue");
100 if (sconn->smb2.send_queue == NULL) {
101 return NT_STATUS_NO_MEMORY;
104 sconn->smb2.sessions.idtree = idr_init(sconn);
105 if (sconn->smb2.sessions.idtree == NULL) {
106 return NT_STATUS_NO_MEMORY;
108 sconn->smb2.sessions.limit = 0x0000FFFE;
109 sconn->smb2.sessions.list = NULL;
111 ret = tstream_bsd_existing_socket(sconn, smbd_server_fd(),
112 &sconn->smb2.stream);
114 status = map_nt_error_from_unix(errno);
118 /* Ensure child is set to non-blocking mode */
119 set_blocking(smbd_server_fd(),false);
123 #define smb2_len(buf) (PVAL(buf,3)|(PVAL(buf,2)<<8)|(PVAL(buf,1)<<16))
124 #define _smb2_setlen(_buf,len) do { \
125 uint8_t *buf = (uint8_t *)_buf; \
127 buf[1] = ((len)&0xFF0000)>>16; \
128 buf[2] = ((len)&0xFF00)>>8; \
129 buf[3] = (len)&0xFF; \
132 static void smb2_setup_nbt_length(struct iovec *vector, int count)
137 for (i=1; i < count; i++) {
138 len += vector[i].iov_len;
141 _smb2_setlen(vector[0].iov_base, len);
144 static int smbd_smb2_request_parent_destructor(struct smbd_smb2_request **req)
147 (*req)->parent = NULL;
148 (*req)->mem_pool = NULL;
154 static int smbd_smb2_request_destructor(struct smbd_smb2_request *req)
156 if (req->out.vector) {
157 DLIST_REMOVE(req->sconn->smb2.requests, req);
162 talloc_free(req->mem_pool);
168 static struct smbd_smb2_request *smbd_smb2_request_allocate(TALLOC_CTX *mem_ctx)
170 TALLOC_CTX *mem_pool;
171 struct smbd_smb2_request **parent;
172 struct smbd_smb2_request *req;
174 mem_pool = talloc_pool(mem_ctx, 8192);
175 if (mem_pool == NULL) {
179 parent = talloc(mem_pool, struct smbd_smb2_request *);
180 if (parent == NULL) {
181 talloc_free(mem_pool);
185 req = talloc_zero(parent, struct smbd_smb2_request);
187 talloc_free(mem_pool);
191 req->mem_pool = mem_pool;
192 req->parent = parent;
194 talloc_set_destructor(parent, smbd_smb2_request_parent_destructor);
195 talloc_set_destructor(req, smbd_smb2_request_destructor);
200 static NTSTATUS smbd_smb2_request_create(struct smbd_server_connection *sconn,
201 const uint8_t *inbuf, size_t size,
202 struct smbd_smb2_request **_req)
204 struct smbd_smb2_request *req;
205 uint32_t protocol_version;
206 const uint8_t *inhdr = NULL;
209 uint32_t next_command_ofs;
211 if (size < (4 + SMB2_HDR_BODY + 2)) {
212 DEBUG(0,("Invalid SMB2 packet length count %ld\n", (long)size));
213 return NT_STATUS_INVALID_PARAMETER;
218 protocol_version = IVAL(inhdr, SMB2_HDR_PROTOCOL_ID);
219 if (protocol_version != SMB2_MAGIC) {
220 DEBUG(0,("Invalid SMB packet: protocol prefix: 0x%08X\n",
222 return NT_STATUS_INVALID_PARAMETER;
225 cmd = SVAL(inhdr, SMB2_HDR_OPCODE);
226 if (cmd != SMB2_OP_NEGPROT) {
227 DEBUG(0,("Invalid SMB packet: first request: 0x%04X\n",
229 return NT_STATUS_INVALID_PARAMETER;
232 next_command_ofs = IVAL(inhdr, SMB2_HDR_NEXT_COMMAND);
233 if (next_command_ofs != 0) {
234 DEBUG(0,("Invalid SMB packet: next_command: 0x%08X\n",
236 return NT_STATUS_INVALID_PARAMETER;
239 req = smbd_smb2_request_allocate(sconn);
241 return NT_STATUS_NO_MEMORY;
245 talloc_steal(req, inbuf);
247 req->in.vector = talloc_array(req, struct iovec, 4);
248 if (req->in.vector == NULL) {
250 return NT_STATUS_NO_MEMORY;
252 req->in.vector_count = 4;
254 memcpy(req->in.nbt_hdr, inbuf, 4);
257 req->in.vector[0].iov_base = (void *)req->in.nbt_hdr;
258 req->in.vector[0].iov_len = 4;
259 ofs += req->in.vector[0].iov_len;
261 req->in.vector[1].iov_base = (void *)(inbuf + ofs);
262 req->in.vector[1].iov_len = SMB2_HDR_BODY;
263 ofs += req->in.vector[1].iov_len;
265 req->in.vector[2].iov_base = (void *)(inbuf + ofs);
266 req->in.vector[2].iov_len = SVAL(inbuf, ofs) & 0xFFFE;
267 ofs += req->in.vector[2].iov_len;
270 return NT_STATUS_INVALID_PARAMETER;
273 req->in.vector[3].iov_base = (void *)(inbuf + ofs);
274 req->in.vector[3].iov_len = size - ofs;
275 ofs += req->in.vector[3].iov_len;
277 req->current_idx = 1;
283 static NTSTATUS smbd_smb2_request_validate(struct smbd_smb2_request *req,
284 uint16_t *p_creds_requested)
288 bool compound_related = false;
290 *p_creds_requested = 0;
291 count = req->in.vector_count;
294 /* It's not a SMB2 request */
295 return NT_STATUS_INVALID_PARAMETER;
298 for (idx=1; idx < count; idx += 3) {
299 uint16_t creds_requested = 0;
300 const uint8_t *inhdr = NULL;
303 if (req->in.vector[idx].iov_len != SMB2_HDR_BODY) {
304 return NT_STATUS_INVALID_PARAMETER;
307 if (req->in.vector[idx+1].iov_len < 2) {
308 return NT_STATUS_INVALID_PARAMETER;
311 inhdr = (const uint8_t *)req->in.vector[idx].iov_base;
313 /* setup the SMB2 header */
314 if (IVAL(inhdr, SMB2_HDR_PROTOCOL_ID) != SMB2_MAGIC) {
315 return NT_STATUS_INVALID_PARAMETER;
318 creds_requested = SVAL(inhdr, SMB2_HDR_CREDIT);
319 if (*p_creds_requested + creds_requested < creds_requested) {
320 *p_creds_requested = 65535;
322 *p_creds_requested += creds_requested;
325 flags = IVAL(inhdr, SMB2_HDR_FLAGS);
328 * the 1st request should never have the
329 * SMB2_HDR_FLAG_CHAINED flag set
331 if (flags & SMB2_HDR_FLAG_CHAINED) {
332 req->next_status = NT_STATUS_INVALID_PARAMETER;
335 } else if (idx == 4) {
337 * the 2nd request triggers related vs. unrelated
338 * compounded requests
340 if (flags & SMB2_HDR_FLAG_CHAINED) {
341 compound_related = true;
343 } else if (idx > 4) {
346 * It seems the this tests are wrong
347 * see the SMB2-COMPOUND test
351 * all other requests should match the 2nd one
353 if (flags & SMB2_HDR_FLAG_CHAINED) {
354 if (!compound_related) {
356 NT_STATUS_INVALID_PARAMETER;
360 if (compound_related) {
362 NT_STATUS_INVALID_PARAMETER;
373 static NTSTATUS smbd_smb2_request_setup_out(struct smbd_smb2_request *req, uint16_t creds)
375 struct iovec *vector;
379 count = req->in.vector_count;
380 vector = talloc_array(req, struct iovec, count);
381 if (vector == NULL) {
382 return NT_STATUS_NO_MEMORY;
385 vector[0].iov_base = req->out.nbt_hdr;
386 vector[0].iov_len = 4;
387 SIVAL(req->out.nbt_hdr, 0, 0);
389 for (idx=1; idx < count; idx += 3) {
390 const uint8_t *inhdr = NULL;
392 uint8_t *outhdr = NULL;
393 uint8_t *outbody = NULL;
394 uint32_t next_command_ofs = 0;
395 struct iovec *current = &vector[idx];
397 if ((idx + 3) < count) {
398 /* we have a next command */
399 next_command_ofs = SMB2_HDR_BODY + 8;
402 inhdr = (const uint8_t *)req->in.vector[idx].iov_base;
403 in_flags = IVAL(inhdr, SMB2_HDR_FLAGS);
405 outhdr = talloc_array(vector, uint8_t,
407 if (outhdr == NULL) {
408 return NT_STATUS_NO_MEMORY;
411 outbody = outhdr + SMB2_HDR_BODY;
413 current[0].iov_base = (void *)outhdr;
414 current[0].iov_len = SMB2_HDR_BODY;
416 current[1].iov_base = (void *)outbody;
417 current[1].iov_len = 8;
419 current[2].iov_base = NULL;
420 current[2].iov_len = 0;
422 /* setup the SMB2 header */
423 SIVAL(outhdr, SMB2_HDR_PROTOCOL_ID, SMB2_MAGIC);
424 SSVAL(outhdr, SMB2_HDR_LENGTH, SMB2_HDR_BODY);
425 SSVAL(outhdr, SMB2_HDR_EPOCH, 0);
426 SIVAL(outhdr, SMB2_HDR_STATUS,
427 NT_STATUS_V(NT_STATUS_INTERNAL_ERROR));
428 SSVAL(outhdr, SMB2_HDR_OPCODE,
429 SVAL(inhdr, SMB2_HDR_OPCODE));
430 SSVAL(outhdr, SMB2_HDR_CREDIT, creds);
431 SIVAL(outhdr, SMB2_HDR_FLAGS,
432 IVAL(inhdr, SMB2_HDR_FLAGS) | SMB2_HDR_FLAG_REDIRECT);
433 SIVAL(outhdr, SMB2_HDR_NEXT_COMMAND, next_command_ofs);
434 SBVAL(outhdr, SMB2_HDR_MESSAGE_ID,
435 BVAL(inhdr, SMB2_HDR_MESSAGE_ID));
436 SIVAL(outhdr, SMB2_HDR_PID,
437 IVAL(inhdr, SMB2_HDR_PID));
438 SIVAL(outhdr, SMB2_HDR_TID,
439 IVAL(inhdr, SMB2_HDR_TID));
440 SBVAL(outhdr, SMB2_HDR_SESSION_ID,
441 BVAL(inhdr, SMB2_HDR_SESSION_ID));
442 memset(outhdr + SMB2_HDR_SIGNATURE, 0, 16);
444 /* setup error body header */
445 SSVAL(outbody, 0x00, 0x08 + 1);
446 SSVAL(outbody, 0x02, 0);
447 SIVAL(outbody, 0x04, 0);
450 req->out.vector = vector;
451 req->out.vector_count = count;
453 /* setup the length of the NBT packet */
454 smb2_setup_nbt_length(req->out.vector, req->out.vector_count);
456 DLIST_ADD_END(req->sconn->smb2.requests, req, struct smbd_smb2_request *);
461 void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
463 const char *location)
465 DEBUG(10,("smbd_server_connection_terminate_ex: reason[%s] at %s\n",
467 exit_server_cleanly(reason);
470 static bool dup_smb2_vec(struct iovec *dstvec,
471 const struct iovec *srcvec,
475 if (srcvec[offset].iov_len &&
476 srcvec[offset].iov_base) {
477 dstvec[offset].iov_base = talloc_memdup(dstvec,
478 srcvec[offset].iov_base,
479 srcvec[offset].iov_len);
480 if (!dstvec[offset].iov_base) {
483 dstvec[offset].iov_len = srcvec[offset].iov_len;
485 dstvec[offset].iov_base = NULL;
486 dstvec[offset].iov_len = 0;
491 static struct smbd_smb2_request *dup_smb2_req(const struct smbd_smb2_request *req)
493 struct smbd_smb2_request *newreq = NULL;
494 struct iovec *outvec = NULL;
495 int count = req->out.vector_count;
498 newreq = smbd_smb2_request_allocate(req->sconn);
503 newreq->sconn = req->sconn;
504 newreq->do_signing = req->do_signing;
505 newreq->current_idx = req->current_idx;
506 newreq->async = false;
507 newreq->cancelled = false;
509 outvec = talloc_array(newreq, struct iovec, count);
514 newreq->out.vector = outvec;
515 newreq->out.vector_count = count;
517 /* Setup the outvec's identically to req. */
518 outvec[0].iov_base = newreq->out.nbt_hdr;
519 outvec[0].iov_len = 4;
520 memcpy(newreq->out.nbt_hdr, req->out.nbt_hdr, 4);
522 for (i = 1; i < count; i++) {
523 if (!dup_smb2_vec(outvec,
531 smb2_setup_nbt_length(newreq->out.vector,
532 newreq->out.vector_count);
537 static void smbd_smb2_request_writev_done(struct tevent_req *subreq);
539 static NTSTATUS smb2_send_async_interim_response(const struct smbd_smb2_request *req)
542 uint8_t *outhdr = NULL;
543 struct smbd_smb2_request *nreq = NULL;
545 /* Create a new smb2 request we'll use
546 for the interim return. */
547 nreq = dup_smb2_req(req);
549 return NT_STATUS_NO_MEMORY;
552 /* Lose the last 3 out vectors. They're the
553 ones we'll be using for the async reply. */
554 nreq->out.vector_count -= 3;
556 smb2_setup_nbt_length(nreq->out.vector,
557 nreq->out.vector_count);
559 /* Step back to the previous reply. */
560 i = nreq->current_idx - 3;
561 outhdr = (uint8_t *)nreq->out.vector[i].iov_base;
562 /* And end the chain. */
563 SIVAL(outhdr, SMB2_HDR_NEXT_COMMAND, 0);
565 /* Re-sign if needed. */
566 if (nreq->do_signing) {
568 status = smb2_signing_sign_pdu(nreq->session->session_key,
569 &nreq->out.vector[i], 3);
570 if (!NT_STATUS_IS_OK(status)) {
574 if (DEBUGLEVEL >= 10) {
575 dbgtext("smb2_send_async_interim_response: nreq->current_idx = %u\n",
576 (unsigned int)nreq->current_idx );
577 dbgtext("smb2_send_async_interim_response: returning %u vectors\n",
578 (unsigned int)nreq->out.vector_count );
579 print_req_vectors(nreq);
581 nreq->subreq = tstream_writev_queue_send(nreq,
582 nreq->sconn->smb2.event_ctx,
583 nreq->sconn->smb2.stream,
584 nreq->sconn->smb2.send_queue,
586 nreq->out.vector_count);
588 if (nreq->subreq == NULL) {
589 return NT_STATUS_NO_MEMORY;
592 tevent_req_set_callback(nreq->subreq,
593 smbd_smb2_request_writev_done,
599 struct smbd_smb2_request_pending_state {
600 struct smbd_server_connection *sconn;
601 uint8_t buf[4 + SMB2_HDR_BODY + 0x08 + 1];
602 struct iovec vector[3];
605 static void smbd_smb2_request_pending_writev_done(struct tevent_req *subreq)
607 struct smbd_smb2_request_pending_state *state =
608 tevent_req_callback_data(subreq,
609 struct smbd_smb2_request_pending_state);
610 struct smbd_server_connection *sconn = state->sconn;
614 ret = tstream_writev_queue_recv(subreq, &sys_errno);
617 NTSTATUS status = map_nt_error_from_unix(sys_errno);
618 smbd_server_connection_terminate(sconn, nt_errstr(status));
625 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
626 struct tevent_req *subreq)
629 struct smbd_smb2_request_pending_state *state = NULL;
630 int i = req->current_idx;
631 uint8_t *reqhdr = NULL;
633 uint8_t *body = NULL;
635 uint64_t message_id = 0;
636 uint64_t async_id = 0;
637 struct iovec *outvec = NULL;
639 if (!tevent_req_is_in_progress(subreq)) {
644 /* We're already async. */
648 if (req->in.vector_count > i + 3) {
650 * We're trying to go async in a compound
651 * request chain. This is not allowed.
652 * Cancel the outstanding request.
654 tevent_req_cancel(subreq);
655 return smbd_smb2_request_error(req,
656 NT_STATUS_INSUFFICIENT_RESOURCES);
659 req->subreq = subreq;
662 if (DEBUGLEVEL >= 10) {
663 dbgtext("smbd_smb2_request_pending_queue: req->current_idx = %u\n",
664 (unsigned int)req->current_idx );
665 print_req_vectors(req);
668 if (req->out.vector_count > 4) {
669 /* This is a compound reply. We
670 * must do an interim response
671 * followed by the async response
674 status = smb2_send_async_interim_response(req);
675 if (!NT_STATUS_IS_OK(status)) {
680 reqhdr = (uint8_t *)req->out.vector[i].iov_base;
681 flags = IVAL(reqhdr, SMB2_HDR_FLAGS);
682 message_id = BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
683 async_id = message_id; /* keep it simple for now... */
686 * What we send is identical to a smbd_smb2_request_error
687 * packet with an error status of STATUS_PENDING. Make use
688 * of this fact sometime when refactoring. JRA.
691 state = talloc_zero(req->sconn, struct smbd_smb2_request_pending_state);
693 return NT_STATUS_NO_MEMORY;
695 state->sconn = req->sconn;
697 state->vector[0].iov_base = (void *)state->buf;
698 state->vector[0].iov_len = 4;
700 state->vector[1].iov_base = state->buf + 4;
701 state->vector[1].iov_len = SMB2_HDR_BODY;
703 state->vector[2].iov_base = state->buf + 4 + SMB2_HDR_BODY;
704 state->vector[2].iov_len = 9;
706 smb2_setup_nbt_length(state->vector, 3);
708 hdr = (uint8_t *)state->vector[1].iov_base;
709 body = (uint8_t *)state->vector[2].iov_base;
711 SIVAL(hdr, SMB2_HDR_PROTOCOL_ID, SMB2_MAGIC);
712 SSVAL(hdr, SMB2_HDR_LENGTH, SMB2_HDR_BODY);
713 SSVAL(hdr, SMB2_HDR_EPOCH, 0);
714 SIVAL(hdr, SMB2_HDR_STATUS, NT_STATUS_V(STATUS_PENDING));
715 SSVAL(hdr, SMB2_HDR_OPCODE, SVAL(reqhdr, SMB2_HDR_OPCODE));
716 SSVAL(hdr, SMB2_HDR_CREDIT, 5);
717 SIVAL(hdr, SMB2_HDR_FLAGS, flags | SMB2_HDR_FLAG_ASYNC);
718 SIVAL(hdr, SMB2_HDR_NEXT_COMMAND, 0);
719 SBVAL(hdr, SMB2_HDR_MESSAGE_ID, message_id);
720 SBVAL(hdr, SMB2_HDR_PID, async_id);
721 SBVAL(hdr, SMB2_HDR_SESSION_ID,
722 BVAL(reqhdr, SMB2_HDR_SESSION_ID));
723 memset(hdr+SMB2_HDR_SIGNATURE, 0, 16);
725 SSVAL(body, 0x00, 0x08 + 1);
727 SCVAL(body, 0x02, 0);
728 SCVAL(body, 0x03, 0);
729 SIVAL(body, 0x04, 0);
730 /* Match W2K8R2... */
731 SCVAL(body, 0x08, 0x21);
733 if (req->do_signing) {
734 status = smb2_signing_sign_pdu(req->session->session_key,
736 if (!NT_STATUS_IS_OK(status)) {
741 subreq = tstream_writev_queue_send(state,
742 req->sconn->smb2.event_ctx,
743 req->sconn->smb2.stream,
744 req->sconn->smb2.send_queue,
748 if (subreq == NULL) {
749 return NT_STATUS_NO_MEMORY;
752 tevent_req_set_callback(subreq,
753 smbd_smb2_request_pending_writev_done,
756 /* Note we're going async with this request. */
760 * Now manipulate req so that the outstanding async request
761 * is the only one left in the struct smbd_smb2_request.
764 if (req->current_idx == 1) {
765 /* There was only one. */
769 /* Re-arrange the in.vectors. */
770 req->in.vector[1] = req->in.vector[i];
771 req->in.vector[2] = req->in.vector[i+1];
772 req->in.vector[3] = req->in.vector[i+2];
773 req->in.vector_count = 4;
774 /* Reset the new in size. */
775 smb2_setup_nbt_length(req->in.vector, 4);
777 /* Now recreate the out.vectors. */
778 outvec = talloc_array(req, struct iovec, 4);
780 return NT_STATUS_NO_MEMORY;
782 outvec[0].iov_base = req->out.nbt_hdr;
783 outvec[0].iov_len = 4;
784 SIVAL(req->out.nbt_hdr, 0, 0);
786 outvec[1].iov_base = talloc_memdup(outvec,
787 req->out.vector[i].iov_base,
789 if (!outvec[1].iov_base) {
790 return NT_STATUS_NO_MEMORY;
792 outvec[1].iov_len = SMB2_HDR_BODY;
794 outvec[2].iov_base = ((uint8_t *)outvec[1].iov_base) +
796 outvec[2].iov_len = 8;
798 if (req->out.vector[i+2].iov_base &&
799 req->out.vector[i+2].iov_len) {
800 outvec[3].iov_base = talloc_memdup(outvec,
801 req->out.vector[i+2].iov_base,
802 req->out.vector[i+2].iov_len);
803 if (!outvec[3].iov_base) {
804 return NT_STATUS_NO_MEMORY;
806 outvec[3].iov_len = req->out.vector[i+2].iov_len;
808 outvec[3].iov_base = NULL;
809 outvec[3].iov_len = 0;
812 TALLOC_FREE(req->out.vector);
814 req->out.vector = outvec;
816 req->current_idx = 1;
817 req->out.vector_count = 4;
821 smb2_setup_nbt_length(req->out.vector,
822 req->out.vector_count);
824 /* Ensure our final reply matches the interim one. */
825 reqhdr = (uint8_t *)req->out.vector[1].iov_base;
826 SIVAL(reqhdr, SMB2_HDR_FLAGS, flags | SMB2_HDR_FLAG_ASYNC);
827 SBVAL(reqhdr, SMB2_HDR_PID, async_id);
830 const uint8_t *inhdr =
831 (const uint8_t *)req->in.vector[1].iov_base;
832 DEBUG(10,("smbd_smb2_request_pending_queue: opcode[%s] mid %llu "
834 smb2_opcode_name((uint16_t)IVAL(inhdr, SMB2_HDR_OPCODE)),
835 (unsigned long long)async_id ));
840 static NTSTATUS smbd_smb2_request_process_cancel(struct smbd_smb2_request *req)
842 struct smbd_server_connection *sconn = req->sconn;
843 struct smbd_smb2_request *cur;
844 const uint8_t *inhdr;
845 int i = req->current_idx;
847 uint64_t search_message_id;
848 uint64_t search_async_id;
851 inhdr = (const uint8_t *)req->in.vector[i].iov_base;
853 flags = IVAL(inhdr, SMB2_HDR_FLAGS);
854 search_message_id = BVAL(inhdr, SMB2_HDR_MESSAGE_ID);
855 search_async_id = BVAL(inhdr, SMB2_HDR_PID);
858 * we don't need the request anymore
859 * cancel requests never have a response
863 for (cur = sconn->smb2.requests; cur; cur = cur->next) {
864 const uint8_t *outhdr;
868 i = cur->current_idx;
870 outhdr = (const uint8_t *)cur->out.vector[i].iov_base;
872 message_id = BVAL(outhdr, SMB2_HDR_MESSAGE_ID);
873 async_id = BVAL(outhdr, SMB2_HDR_PID);
875 if (flags & SMB2_HDR_FLAG_ASYNC) {
876 if (search_async_id == async_id) {
881 if (search_message_id == message_id) {
882 found_id = message_id;
888 if (cur && cur->subreq) {
889 inhdr = (const uint8_t *)cur->in.vector[i].iov_base;
890 DEBUG(10,("smbd_smb2_request_process_cancel: attempting to "
891 "cancel opcode[%s] mid %llu\n",
892 smb2_opcode_name((uint16_t)IVAL(inhdr, SMB2_HDR_OPCODE)),
893 (unsigned long long)found_id ));
894 tevent_req_cancel(cur->subreq);
900 static NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req)
902 const uint8_t *inhdr;
903 int i = req->current_idx;
908 NTSTATUS session_status;
909 uint32_t allowed_flags;
911 inhdr = (const uint8_t *)req->in.vector[i].iov_base;
913 /* TODO: verify more things */
915 flags = IVAL(inhdr, SMB2_HDR_FLAGS);
916 opcode = IVAL(inhdr, SMB2_HDR_OPCODE);
917 mid = BVAL(inhdr, SMB2_HDR_MESSAGE_ID);
918 DEBUG(10,("smbd_smb2_request_dispatch: opcode[%s] mid = %llu\n",
919 smb2_opcode_name(opcode),
920 (unsigned long long)mid));
922 allowed_flags = SMB2_HDR_FLAG_CHAINED |
923 SMB2_HDR_FLAG_SIGNED |
925 if (opcode == SMB2_OP_CANCEL) {
926 allowed_flags |= SMB2_HDR_FLAG_ASYNC;
928 if ((flags & ~allowed_flags) != 0) {
929 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
932 session_status = smbd_smb2_request_check_session(req);
934 req->do_signing = false;
935 if (flags & SMB2_HDR_FLAG_SIGNED) {
936 if (!NT_STATUS_IS_OK(session_status)) {
937 return smbd_smb2_request_error(req, session_status);
940 req->do_signing = true;
941 status = smb2_signing_check_pdu(req->session->session_key,
942 &req->in.vector[i], 3);
943 if (!NT_STATUS_IS_OK(status)) {
944 return smbd_smb2_request_error(req, status);
946 } else if (req->session && req->session->do_signing) {
947 return smbd_smb2_request_error(req, NT_STATUS_ACCESS_DENIED);
950 if (flags & SMB2_HDR_FLAG_CHAINED) {
952 * This check is mostly for giving the correct error code
953 * for compounded requests.
955 * TODO: we may need to move this after the session
958 if (!NT_STATUS_IS_OK(req->next_status)) {
959 return smbd_smb2_request_error(req, req->next_status);
962 req->compat_chain_fsp = NULL;
966 case SMB2_OP_NEGPROT:
967 return smbd_smb2_request_process_negprot(req);
969 case SMB2_OP_SESSSETUP:
970 return smbd_smb2_request_process_sesssetup(req);
973 if (!NT_STATUS_IS_OK(session_status)) {
974 return smbd_smb2_request_error(req, session_status);
976 return smbd_smb2_request_process_logoff(req);
979 if (!NT_STATUS_IS_OK(session_status)) {
980 return smbd_smb2_request_error(req, session_status);
982 status = smbd_smb2_request_check_session(req);
983 if (!NT_STATUS_IS_OK(status)) {
984 return smbd_smb2_request_error(req, status);
986 return smbd_smb2_request_process_tcon(req);
989 if (!NT_STATUS_IS_OK(session_status)) {
990 return smbd_smb2_request_error(req, session_status);
992 status = smbd_smb2_request_check_tcon(req);
993 if (!NT_STATUS_IS_OK(status)) {
994 return smbd_smb2_request_error(req, status);
996 return smbd_smb2_request_process_tdis(req);
999 if (!NT_STATUS_IS_OK(session_status)) {
1000 return smbd_smb2_request_error(req, session_status);
1002 status = smbd_smb2_request_check_tcon(req);
1003 if (!NT_STATUS_IS_OK(status)) {
1004 return smbd_smb2_request_error(req, status);
1006 return smbd_smb2_request_process_create(req);
1009 if (!NT_STATUS_IS_OK(session_status)) {
1010 return smbd_smb2_request_error(req, session_status);
1012 status = smbd_smb2_request_check_tcon(req);
1013 if (!NT_STATUS_IS_OK(status)) {
1014 return smbd_smb2_request_error(req, status);
1016 return smbd_smb2_request_process_close(req);
1019 if (!NT_STATUS_IS_OK(session_status)) {
1020 return smbd_smb2_request_error(req, session_status);
1022 status = smbd_smb2_request_check_tcon(req);
1023 if (!NT_STATUS_IS_OK(status)) {
1024 return smbd_smb2_request_error(req, status);
1026 return smbd_smb2_request_process_flush(req);
1029 if (!NT_STATUS_IS_OK(session_status)) {
1030 return smbd_smb2_request_error(req, session_status);
1032 status = smbd_smb2_request_check_tcon(req);
1033 if (!NT_STATUS_IS_OK(status)) {
1034 return smbd_smb2_request_error(req, status);
1036 return smbd_smb2_request_process_read(req);
1039 if (!NT_STATUS_IS_OK(session_status)) {
1040 return smbd_smb2_request_error(req, session_status);
1042 status = smbd_smb2_request_check_tcon(req);
1043 if (!NT_STATUS_IS_OK(status)) {
1044 return smbd_smb2_request_error(req, status);
1046 return smbd_smb2_request_process_write(req);
1049 if (!NT_STATUS_IS_OK(session_status)) {
1050 return smbd_smb2_request_error(req, session_status);
1052 status = smbd_smb2_request_check_tcon(req);
1053 if (!NT_STATUS_IS_OK(status)) {
1054 return smbd_smb2_request_error(req, status);
1056 return smbd_smb2_request_process_lock(req);
1059 if (!NT_STATUS_IS_OK(session_status)) {
1060 return smbd_smb2_request_error(req, session_status);
1062 status = smbd_smb2_request_check_tcon(req);
1063 if (!NT_STATUS_IS_OK(status)) {
1064 return smbd_smb2_request_error(req, status);
1066 return smbd_smb2_request_process_ioctl(req);
1068 case SMB2_OP_CANCEL:
1069 return smbd_smb2_request_process_cancel(req);
1071 case SMB2_OP_KEEPALIVE:
1072 return smbd_smb2_request_process_keepalive(req);
1075 if (!NT_STATUS_IS_OK(session_status)) {
1076 return smbd_smb2_request_error(req, session_status);
1078 status = smbd_smb2_request_check_tcon(req);
1079 if (!NT_STATUS_IS_OK(status)) {
1080 return smbd_smb2_request_error(req, status);
1082 return smbd_smb2_request_process_find(req);
1084 case SMB2_OP_NOTIFY:
1085 if (!NT_STATUS_IS_OK(session_status)) {
1086 return smbd_smb2_request_error(req, session_status);
1088 status = smbd_smb2_request_check_tcon(req);
1089 if (!NT_STATUS_IS_OK(status)) {
1090 return smbd_smb2_request_error(req, status);
1092 return smbd_smb2_request_process_notify(req);
1094 case SMB2_OP_GETINFO:
1095 if (!NT_STATUS_IS_OK(session_status)) {
1096 return smbd_smb2_request_error(req, session_status);
1098 status = smbd_smb2_request_check_tcon(req);
1099 if (!NT_STATUS_IS_OK(status)) {
1100 return smbd_smb2_request_error(req, status);
1102 return smbd_smb2_request_process_getinfo(req);
1104 case SMB2_OP_SETINFO:
1105 if (!NT_STATUS_IS_OK(session_status)) {
1106 return smbd_smb2_request_error(req, session_status);
1108 status = smbd_smb2_request_check_tcon(req);
1109 if (!NT_STATUS_IS_OK(status)) {
1110 return smbd_smb2_request_error(req, status);
1112 return smbd_smb2_request_process_setinfo(req);
1115 if (!NT_STATUS_IS_OK(session_status)) {
1116 return smbd_smb2_request_error(req, session_status);
1118 status = smbd_smb2_request_check_tcon(req);
1119 if (!NT_STATUS_IS_OK(status)) {
1120 return smbd_smb2_request_error(req, status);
1122 return smbd_smb2_request_process_break(req);
1125 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
1128 static void smbd_smb2_request_dispatch_compound(struct tevent_context *ctx,
1129 struct tevent_immediate *im,
1130 void *private_data);
1132 static NTSTATUS smbd_smb2_request_reply(struct smbd_smb2_request *req)
1134 struct tevent_req *subreq;
1138 smb2_setup_nbt_length(req->out.vector, req->out.vector_count);
1140 if (req->do_signing) {
1141 int i = req->current_idx;
1143 status = smb2_signing_sign_pdu(req->session->session_key,
1144 &req->out.vector[i], 3);
1145 if (!NT_STATUS_IS_OK(status)) {
1150 req->current_idx += 3;
1152 if (req->current_idx < req->out.vector_count) {
1154 * We must process the remaining compound
1155 * SMB2 requests before any new incoming SMB2
1156 * requests. This is because incoming SMB2
1157 * requests may include a cancel for a
1158 * compound request we haven't processed
1161 struct tevent_immediate *im = tevent_create_immediate(req);
1163 return NT_STATUS_NO_MEMORY;
1165 tevent_schedule_immediate(im,
1166 req->sconn->smb2.event_ctx,
1167 smbd_smb2_request_dispatch_compound,
1169 return NT_STATUS_OK;
1172 if (DEBUGLEVEL >= 10) {
1173 dbgtext("smbd_smb2_request_reply: sending...\n");
1174 print_req_vectors(req);
1177 subreq = tstream_writev_queue_send(req,
1178 req->sconn->smb2.event_ctx,
1179 req->sconn->smb2.stream,
1180 req->sconn->smb2.send_queue,
1182 req->out.vector_count);
1183 if (subreq == NULL) {
1184 return NT_STATUS_NO_MEMORY;
1186 tevent_req_set_callback(subreq, smbd_smb2_request_writev_done, req);
1188 return NT_STATUS_OK;
1191 static void smbd_smb2_request_dispatch_compound(struct tevent_context *ctx,
1192 struct tevent_immediate *im,
1195 struct smbd_smb2_request *req = talloc_get_type_abort(private_data,
1196 struct smbd_smb2_request);
1197 struct smbd_server_connection *sconn = req->sconn;
1202 if (DEBUGLEVEL >= 10) {
1203 DEBUG(10,("smbd_smb2_request_dispatch_compound: idx[%d] of %d vectors\n",
1204 req->current_idx, req->in.vector_count));
1205 print_req_vectors(req);
1208 status = smbd_smb2_request_dispatch(req);
1209 if (!NT_STATUS_IS_OK(status)) {
1210 smbd_server_connection_terminate(sconn, nt_errstr(status));
1215 static void smbd_smb2_request_writev_done(struct tevent_req *subreq)
1217 struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
1218 struct smbd_smb2_request);
1219 struct smbd_server_connection *sconn = req->sconn;
1223 ret = tstream_writev_queue_recv(subreq, &sys_errno);
1224 TALLOC_FREE(subreq);
1227 NTSTATUS status = map_nt_error_from_unix(sys_errno);
1228 DEBUG(2,("smbd_smb2_request_writev_done: client write error %s\n",
1229 nt_errstr(status)));
1230 smbd_server_connection_terminate(sconn, nt_errstr(status));
1235 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
1238 const char *location)
1242 int i = req->current_idx;
1244 DEBUG(10,("smbd_smb2_request_error_ex: idx[%d] status[%s] |%s| at %s\n",
1245 i, nt_errstr(status), info ? " +info" : "",
1248 outhdr = (uint8_t *)req->out.vector[i].iov_base;
1250 SIVAL(outhdr, SMB2_HDR_STATUS, NT_STATUS_V(status));
1252 outbody = outhdr + SMB2_HDR_BODY;
1253 SSVAL(outbody, 0, 9);
1255 req->out.vector[i+1].iov_base = (void *)outbody;
1256 req->out.vector[i+1].iov_len = 8;
1259 SIVAL(outbody, 0x04, info->length);
1260 req->out.vector[i+2].iov_base = (void *)info->data;
1261 req->out.vector[i+2].iov_len = info->length;
1263 req->out.vector[i+2].iov_base = talloc_array(req, uint8_t, 1);
1264 if (!req->out.vector[i+2].iov_base) {
1265 return NT_STATUS_NO_MEMORY;
1267 SCVAL(req->out.vector[i+2].iov_base, 0, 0);
1268 req->out.vector[i+2].iov_len = 1;
1272 * if a request fails, all other remaining
1273 * compounded requests should fail too
1275 req->next_status = NT_STATUS_INVALID_PARAMETER;
1277 return smbd_smb2_request_reply(req);
1280 NTSTATUS smbd_smb2_request_done_ex(struct smbd_smb2_request *req,
1282 DATA_BLOB body, DATA_BLOB *dyn,
1283 const char *location)
1286 int i = req->current_idx;
1287 uint32_t next_command_ofs;
1289 DEBUG(10,("smbd_smb2_request_done_ex: "
1290 "idx[%d] status[%s] body[%u] dyn[%s:%u] at %s\n",
1291 i, nt_errstr(status), (unsigned int)body.length,
1293 (unsigned int)(dyn ? dyn->length : 0),
1296 if (body.length < 2) {
1297 return smbd_smb2_request_error(req, NT_STATUS_INTERNAL_ERROR);
1300 if ((body.length % 2) != 0) {
1301 return smbd_smb2_request_error(req, NT_STATUS_INTERNAL_ERROR);
1304 outhdr = (uint8_t *)req->out.vector[i].iov_base;
1306 next_command_ofs = IVAL(outhdr, SMB2_HDR_NEXT_COMMAND);
1307 SIVAL(outhdr, SMB2_HDR_STATUS, NT_STATUS_V(status));
1309 req->out.vector[i+1].iov_base = (void *)body.data;
1310 req->out.vector[i+1].iov_len = body.length;
1313 req->out.vector[i+2].iov_base = (void *)dyn->data;
1314 req->out.vector[i+2].iov_len = dyn->length;
1316 req->out.vector[i+2].iov_base = NULL;
1317 req->out.vector[i+2].iov_len = 0;
1320 /* see if we need to recalculate the offset to the next response */
1321 if (next_command_ofs > 0) {
1322 next_command_ofs = SMB2_HDR_BODY;
1323 next_command_ofs += req->out.vector[i+1].iov_len;
1324 next_command_ofs += req->out.vector[i+2].iov_len;
1327 if ((next_command_ofs % 8) != 0) {
1328 size_t pad_size = 8 - (next_command_ofs % 8);
1329 if (req->out.vector[i+2].iov_len == 0) {
1331 * if the dyn buffer is empty
1332 * we can use it to add padding
1336 pad = talloc_zero_array(req->out.vector,
1339 return smbd_smb2_request_error(req,
1340 NT_STATUS_NO_MEMORY);
1343 req->out.vector[i+2].iov_base = (void *)pad;
1344 req->out.vector[i+2].iov_len = pad_size;
1347 * For now we copy the dynamic buffer
1348 * and add the padding to the new buffer
1355 old_size = req->out.vector[i+2].iov_len;
1356 old_dyn = (uint8_t *)req->out.vector[i+2].iov_base;
1358 new_size = old_size + pad_size;
1359 new_dyn = talloc_array(req->out.vector,
1361 if (new_dyn == NULL) {
1362 return smbd_smb2_request_error(req,
1363 NT_STATUS_NO_MEMORY);
1366 memcpy(new_dyn, old_dyn, old_size);
1367 memset(new_dyn + old_size, 0, pad_size);
1369 req->out.vector[i+2].iov_base = (void *)new_dyn;
1370 req->out.vector[i+2].iov_len = new_size;
1372 TALLOC_FREE(old_dyn);
1374 next_command_ofs += pad_size;
1377 SIVAL(outhdr, SMB2_HDR_NEXT_COMMAND, next_command_ofs);
1379 return smbd_smb2_request_reply(req);
1382 struct smbd_smb2_send_oplock_break_state {
1383 struct smbd_server_connection *sconn;
1384 uint8_t buf[4 + SMB2_HDR_BODY + 0x18];
1385 struct iovec vector;
1388 static void smbd_smb2_oplock_break_writev_done(struct tevent_req *subreq);
1390 NTSTATUS smbd_smb2_send_oplock_break(struct smbd_server_connection *sconn,
1391 uint64_t file_id_persistent,
1392 uint64_t file_id_volatile,
1393 uint8_t oplock_level)
1395 struct smbd_smb2_send_oplock_break_state *state;
1396 struct tevent_req *subreq;
1400 state = talloc(sconn, struct smbd_smb2_send_oplock_break_state);
1401 if (state == NULL) {
1402 return NT_STATUS_NO_MEMORY;
1404 state->sconn = sconn;
1406 state->vector.iov_base = (void *)state->buf;
1407 state->vector.iov_len = sizeof(state->buf);
1409 _smb2_setlen(state->buf, sizeof(state->buf) - 4);
1410 hdr = state->buf + 4;
1411 body = hdr + SMB2_HDR_BODY;
1413 SIVAL(hdr, 0, SMB2_MAGIC);
1414 SSVAL(hdr, SMB2_HDR_LENGTH, SMB2_HDR_BODY);
1415 SSVAL(hdr, SMB2_HDR_EPOCH, 0);
1416 SIVAL(hdr, SMB2_HDR_STATUS, 0);
1417 SSVAL(hdr, SMB2_HDR_OPCODE, SMB2_OP_BREAK);
1418 SSVAL(hdr, SMB2_HDR_CREDIT, 0);
1419 SIVAL(hdr, SMB2_HDR_FLAGS, SMB2_HDR_FLAG_REDIRECT);
1420 SIVAL(hdr, SMB2_HDR_NEXT_COMMAND, 0);
1421 SBVAL(hdr, SMB2_HDR_MESSAGE_ID, UINT64_MAX);
1422 SIVAL(hdr, SMB2_HDR_PID, 0);
1423 SIVAL(hdr, SMB2_HDR_TID, 0);
1424 SBVAL(hdr, SMB2_HDR_SESSION_ID, 0);
1425 memset(hdr+SMB2_HDR_SIGNATURE, 0, 16);
1427 SSVAL(body, 0x00, 0x18);
1429 SCVAL(body, 0x02, oplock_level);
1430 SCVAL(body, 0x03, 0); /* reserved */
1431 SIVAL(body, 0x04, 0); /* reserved */
1432 SBVAL(body, 0x08, file_id_persistent);
1433 SBVAL(body, 0x10, file_id_volatile);
1435 subreq = tstream_writev_queue_send(state,
1436 sconn->smb2.event_ctx,
1438 sconn->smb2.send_queue,
1440 if (subreq == NULL) {
1441 return NT_STATUS_NO_MEMORY;
1443 tevent_req_set_callback(subreq,
1444 smbd_smb2_oplock_break_writev_done,
1447 return NT_STATUS_OK;
1450 static void smbd_smb2_oplock_break_writev_done(struct tevent_req *subreq)
1452 struct smbd_smb2_send_oplock_break_state *state =
1453 tevent_req_callback_data(subreq,
1454 struct smbd_smb2_send_oplock_break_state);
1455 struct smbd_server_connection *sconn = state->sconn;
1459 ret = tstream_writev_queue_recv(subreq, &sys_errno);
1460 TALLOC_FREE(subreq);
1462 NTSTATUS status = map_nt_error_from_unix(sys_errno);
1463 smbd_server_connection_terminate(sconn, nt_errstr(status));
1470 struct smbd_smb2_request_read_state {
1472 bool asked_for_header;
1473 struct smbd_smb2_request *smb2_req;
1476 static int smbd_smb2_request_next_vector(struct tstream_context *stream,
1478 TALLOC_CTX *mem_ctx,
1479 struct iovec **_vector,
1481 static void smbd_smb2_request_read_done(struct tevent_req *subreq);
1483 static struct tevent_req *smbd_smb2_request_read_send(TALLOC_CTX *mem_ctx,
1484 struct tevent_context *ev,
1485 struct smbd_server_connection *sconn)
1487 struct tevent_req *req;
1488 struct smbd_smb2_request_read_state *state;
1489 struct tevent_req *subreq;
1491 req = tevent_req_create(mem_ctx, &state,
1492 struct smbd_smb2_request_read_state);
1497 state->asked_for_header = false;
1499 state->smb2_req = smbd_smb2_request_allocate(state);
1500 if (tevent_req_nomem(state->smb2_req, req)) {
1501 return tevent_req_post(req, ev);
1503 state->smb2_req->sconn = sconn;
1505 subreq = tstream_readv_pdu_queue_send(state, ev, sconn->smb2.stream,
1506 sconn->smb2.recv_queue,
1507 smbd_smb2_request_next_vector,
1509 if (tevent_req_nomem(subreq, req)) {
1510 return tevent_req_post(req, ev);
1512 tevent_req_set_callback(subreq, smbd_smb2_request_read_done, req);
1517 static int smbd_smb2_request_next_vector(struct tstream_context *stream,
1519 TALLOC_CTX *mem_ctx,
1520 struct iovec **_vector,
1523 struct smbd_smb2_request_read_state *state =
1524 talloc_get_type_abort(private_data,
1525 struct smbd_smb2_request_read_state);
1526 struct smbd_smb2_request *req = state->smb2_req;
1527 struct iovec *vector;
1528 int idx = req->in.vector_count;
1530 uint8_t *buf = NULL;
1532 if (req->in.vector_count == 0) {
1534 * first we need to get the NBT header
1536 req->in.vector = talloc_array(req, struct iovec,
1537 req->in.vector_count + 1);
1538 if (req->in.vector == NULL) {
1541 req->in.vector_count += 1;
1543 req->in.vector[idx].iov_base = (void *)req->in.nbt_hdr;
1544 req->in.vector[idx].iov_len = 4;
1546 vector = talloc_array(mem_ctx, struct iovec, 1);
1547 if (vector == NULL) {
1551 vector[0] = req->in.vector[idx];
1558 if (req->in.vector_count == 1) {
1560 * Now we analyze the NBT header
1562 state->missing = smb2_len(req->in.vector[0].iov_base);
1564 if (state->missing == 0) {
1565 /* if there're no remaining bytes, we're done */
1571 req->in.vector = talloc_realloc(req, req->in.vector,
1573 req->in.vector_count + 1);
1574 if (req->in.vector == NULL) {
1577 req->in.vector_count += 1;
1579 if (CVAL(req->in.vector[0].iov_base, 0) != 0) {
1581 * it's a special NBT message,
1582 * so get all remaining bytes
1584 len = state->missing;
1585 } else if (state->missing < (SMB2_HDR_BODY + 2)) {
1587 * it's an invalid message, just read what we can get
1588 * and let the caller handle the error
1590 len = state->missing;
1593 * We assume it's a SMB2 request,
1594 * and we first get the header and the
1595 * first 2 bytes (the struct size) of the body
1597 len = SMB2_HDR_BODY + 2;
1599 state->asked_for_header = true;
1602 state->missing -= len;
1604 buf = talloc_array(req->in.vector, uint8_t, len);
1609 req->in.vector[idx].iov_base = (void *)buf;
1610 req->in.vector[idx].iov_len = len;
1612 vector = talloc_array(mem_ctx, struct iovec, 1);
1613 if (vector == NULL) {
1617 vector[0] = req->in.vector[idx];
1624 if (state->missing == 0) {
1625 /* if there're no remaining bytes, we're done */
1631 if (state->asked_for_header) {
1634 size_t next_command_ofs;
1639 bool invalid = false;
1641 state->asked_for_header = false;
1644 * We got the SMB2 header and the first 2 bytes
1645 * of the body. We fix the size to just the header
1646 * and manually copy the 2 first bytes to the body section
1648 req->in.vector[idx-1].iov_len = SMB2_HDR_BODY;
1649 hdr = (const uint8_t *)req->in.vector[idx-1].iov_base;
1651 /* allocate vectors for body and dynamic areas */
1652 req->in.vector = talloc_realloc(req, req->in.vector,
1654 req->in.vector_count + 2);
1655 if (req->in.vector == NULL) {
1658 req->in.vector_count += 2;
1660 full_size = state->missing + SMB2_HDR_BODY + 2;
1661 next_command_ofs = IVAL(hdr, SMB2_HDR_NEXT_COMMAND);
1662 body_size = SVAL(hdr, SMB2_HDR_BODY);
1664 if (next_command_ofs != 0) {
1665 if (next_command_ofs < (SMB2_HDR_BODY + 2)) {
1667 * this is invalid, just return a zero
1668 * body and let the caller deal with the error
1671 } else if (next_command_ofs > full_size) {
1673 * this is invalid, just return a zero
1674 * body and let the caller deal with the error
1678 full_size = next_command_ofs;
1683 if (body_size < 2) {
1685 * this is invalid, just return a zero
1686 * body and let the caller deal with the error
1691 if ((body_size % 2) != 0) {
1695 if (body_size > (full_size - SMB2_HDR_BODY)) {
1697 * this is invalid, just return a zero
1698 * body and let the caller deal with the error
1705 /* the caller should check this */
1709 dyn_size = full_size - (SMB2_HDR_BODY + body_size);
1711 state->missing -= (body_size - 2) + dyn_size;
1713 body = talloc_array(req->in.vector, uint8_t, body_size);
1718 dyn = talloc_array(req->in.vector, uint8_t, dyn_size);
1723 req->in.vector[idx].iov_base = (void *)body;
1724 req->in.vector[idx].iov_len = body_size;
1725 req->in.vector[idx+1].iov_base = (void *)dyn;
1726 req->in.vector[idx+1].iov_len = dyn_size;
1728 vector = talloc_array(mem_ctx, struct iovec, 2);
1729 if (vector == NULL) {
1734 * the first 2 bytes of the body were already fetched
1735 * together with the header
1737 memcpy(body, hdr + SMB2_HDR_BODY, 2);
1738 vector[0].iov_base = body + 2;
1739 vector[0].iov_len = body_size - 2;
1741 vector[1] = req->in.vector[idx+1];
1749 * when we endup here, we're looking for a new SMB2 request
1750 * next. And we ask for its header and the first 2 bytes of
1751 * the body (like we did for the first SMB2 request).
1754 req->in.vector = talloc_realloc(req, req->in.vector,
1756 req->in.vector_count + 1);
1757 if (req->in.vector == NULL) {
1760 req->in.vector_count += 1;
1763 * We assume it's a SMB2 request,
1764 * and we first get the header and the
1765 * first 2 bytes (the struct size) of the body
1767 len = SMB2_HDR_BODY + 2;
1769 if (len > state->missing) {
1770 /* let the caller handle the error */
1771 len = state->missing;
1774 state->missing -= len;
1775 state->asked_for_header = true;
1777 buf = talloc_array(req->in.vector, uint8_t, len);
1782 req->in.vector[idx].iov_base = (void *)buf;
1783 req->in.vector[idx].iov_len = len;
1785 vector = talloc_array(mem_ctx, struct iovec, 1);
1786 if (vector == NULL) {
1790 vector[0] = req->in.vector[idx];
1797 static void smbd_smb2_request_read_done(struct tevent_req *subreq)
1799 struct tevent_req *req =
1800 tevent_req_callback_data(subreq,
1806 ret = tstream_readv_pdu_queue_recv(subreq, &sys_errno);
1808 status = map_nt_error_from_unix(sys_errno);
1809 tevent_req_nterror(req, status);
1813 tevent_req_done(req);
1816 static NTSTATUS smbd_smb2_request_read_recv(struct tevent_req *req,
1817 TALLOC_CTX *mem_ctx,
1818 struct smbd_smb2_request **_smb2_req)
1820 struct smbd_smb2_request_read_state *state =
1821 tevent_req_data(req,
1822 struct smbd_smb2_request_read_state);
1825 if (tevent_req_is_nterror(req, &status)) {
1826 tevent_req_received(req);
1830 talloc_steal(mem_ctx, state->smb2_req->mem_pool);
1831 *_smb2_req = state->smb2_req;
1832 tevent_req_received(req);
1833 return NT_STATUS_OK;
1836 static void smbd_smb2_request_incoming(struct tevent_req *subreq);
1838 void smbd_smb2_first_negprot(struct smbd_server_connection *sconn,
1839 const uint8_t *inbuf, size_t size)
1842 struct smbd_smb2_request *req;
1843 struct tevent_req *subreq;
1845 DEBUG(10,("smbd_smb2_first_negprot: packet length %u\n",
1846 (unsigned int)size));
1848 status = smbd_initialize_smb2(sconn);
1849 if (!NT_STATUS_IS_OK(status)) {
1850 smbd_server_connection_terminate(sconn, nt_errstr(status));
1854 status = smbd_smb2_request_create(sconn, inbuf, size, &req);
1855 if (!NT_STATUS_IS_OK(status)) {
1856 smbd_server_connection_terminate(sconn, nt_errstr(status));
1860 status = smbd_smb2_request_setup_out(req, (uint16_t)lp_maxmux());
1861 if (!NT_STATUS_IS_OK(status)) {
1862 smbd_server_connection_terminate(sconn, nt_errstr(status));
1866 status = smbd_smb2_request_dispatch(req);
1867 if (!NT_STATUS_IS_OK(status)) {
1868 smbd_server_connection_terminate(sconn, nt_errstr(status));
1872 /* ask for the next request */
1873 subreq = smbd_smb2_request_read_send(sconn, sconn->smb2.event_ctx, sconn);
1874 if (subreq == NULL) {
1875 smbd_server_connection_terminate(sconn, "no memory for reading");
1878 tevent_req_set_callback(subreq, smbd_smb2_request_incoming, sconn);
1881 static void smbd_smb2_request_incoming(struct tevent_req *subreq)
1883 uint16_t creds_requested = 0;
1884 struct smbd_server_connection *sconn = tevent_req_callback_data(subreq,
1885 struct smbd_server_connection);
1887 struct smbd_smb2_request *req = NULL;
1889 status = smbd_smb2_request_read_recv(subreq, sconn, &req);
1890 TALLOC_FREE(subreq);
1891 if (!NT_STATUS_IS_OK(status)) {
1892 DEBUG(2,("smbd_smb2_request_incoming: client read error %s\n",
1893 nt_errstr(status)));
1894 smbd_server_connection_terminate(sconn, nt_errstr(status));
1898 if (req->in.nbt_hdr[0] != 0x00) {
1899 DEBUG(1,("smbd_smb2_request_incoming: ignore NBT[0x%02X] msg\n",
1900 req->in.nbt_hdr[0]));
1905 req->current_idx = 1;
1907 DEBUG(10,("smbd_smb2_request_incoming: idx[%d] of %d vectors\n",
1908 req->current_idx, req->in.vector_count));
1910 status = smbd_smb2_request_validate(req, &creds_requested);
1911 if (!NT_STATUS_IS_OK(status)) {
1912 smbd_server_connection_terminate(sconn, nt_errstr(status));
1916 status = smbd_smb2_request_setup_out(req, 5);
1917 if (!NT_STATUS_IS_OK(status)) {
1918 smbd_server_connection_terminate(sconn, nt_errstr(status));
1922 status = smbd_smb2_request_dispatch(req);
1923 if (!NT_STATUS_IS_OK(status)) {
1924 smbd_server_connection_terminate(sconn, nt_errstr(status));
1929 /* ask for the next request (this constructs the main loop) */
1930 subreq = smbd_smb2_request_read_send(sconn, sconn->smb2.event_ctx, sconn);
1931 if (subreq == NULL) {
1932 smbd_server_connection_terminate(sconn, "no memory for reading");
1935 tevent_req_set_callback(subreq, smbd_smb2_request_incoming, sconn);