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 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size)
28 if (size < (4 + SMB2_HDR_BODY)) {
32 if (IVAL(inbuf, 4) != SMB2_MAGIC) {
39 static NTSTATUS smbd_initialize_smb2(struct smbd_server_connection *sconn)
44 TALLOC_FREE(sconn->smb1.fde);
46 sconn->smb2.event_ctx = smbd_event_context();
48 sconn->smb2.recv_queue = tevent_queue_create(sconn, "smb2 recv queue");
49 if (sconn->smb2.recv_queue == NULL) {
50 return NT_STATUS_NO_MEMORY;
53 sconn->smb2.send_queue = tevent_queue_create(sconn, "smb2 send queue");
54 if (sconn->smb2.send_queue == NULL) {
55 return NT_STATUS_NO_MEMORY;
58 sconn->smb2.sessions.idtree = idr_init(sconn);
59 if (sconn->smb2.sessions.idtree == NULL) {
60 return NT_STATUS_NO_MEMORY;
62 sconn->smb2.sessions.limit = 0x0000FFFE;
63 sconn->smb2.sessions.list = NULL;
65 ret = tstream_bsd_existing_socket(sconn, smbd_server_fd(),
68 status = map_nt_error_from_unix(errno);
72 /* Ensure child is set to non-blocking mode */
73 set_blocking(smbd_server_fd(),false);
77 #define smb2_len(buf) (PVAL(buf,3)|(PVAL(buf,2)<<8)|(PVAL(buf,1)<<16))
78 #define _smb2_setlen(_buf,len) do { \
79 uint8_t *buf = (uint8_t *)_buf; \
81 buf[1] = ((len)&0xFF0000)>>16; \
82 buf[2] = ((len)&0xFF00)>>8; \
83 buf[3] = (len)&0xFF; \
86 static void smb2_setup_nbt_length(struct iovec *vector, int count)
91 for (i=1; i < count; i++) {
92 len += vector[i].iov_len;
95 _smb2_setlen(vector[0].iov_base, len);
98 static int smbd_smb2_request_parent_destructor(struct smbd_smb2_request **req)
101 (*req)->parent = NULL;
102 (*req)->mem_pool = NULL;
108 static int smbd_smb2_request_destructor(struct smbd_smb2_request *req)
110 if (req->out.vector) {
111 DLIST_REMOVE(req->sconn->smb2.requests, req);
116 talloc_free(req->mem_pool);
122 static struct smbd_smb2_request *smbd_smb2_request_allocate(TALLOC_CTX *mem_ctx)
124 TALLOC_CTX *mem_pool;
125 struct smbd_smb2_request **parent;
126 struct smbd_smb2_request *req;
128 mem_pool = talloc_pool(mem_ctx, 8192);
129 if (mem_pool == NULL) {
133 parent = talloc(mem_pool, struct smbd_smb2_request *);
134 if (parent == NULL) {
135 talloc_free(mem_pool);
139 req = talloc_zero(parent, struct smbd_smb2_request);
141 talloc_free(mem_pool);
145 req->mem_pool = mem_pool;
146 req->parent = parent;
148 talloc_set_destructor(parent, smbd_smb2_request_parent_destructor);
149 talloc_set_destructor(req, smbd_smb2_request_destructor);
154 static NTSTATUS smbd_smb2_request_create(struct smbd_server_connection *sconn,
155 const uint8_t *inbuf, size_t size,
156 struct smbd_smb2_request **_req)
158 struct smbd_smb2_request *req;
159 uint32_t protocol_version;
160 const uint8_t *inhdr = NULL;
163 uint32_t next_command_ofs;
165 if (size < (4 + SMB2_HDR_BODY + 2)) {
166 DEBUG(0,("Invalid SMB2 packet length count %ld\n", (long)size));
167 return NT_STATUS_INVALID_PARAMETER;
172 protocol_version = IVAL(inhdr, SMB2_HDR_PROTOCOL_ID);
173 if (protocol_version != SMB2_MAGIC) {
174 DEBUG(0,("Invalid SMB packet: protocol prefix: 0x%08X\n",
176 return NT_STATUS_INVALID_PARAMETER;
179 cmd = SVAL(inhdr, SMB2_HDR_OPCODE);
180 if (cmd != SMB2_OP_NEGPROT) {
181 DEBUG(0,("Invalid SMB packet: first request: 0x%04X\n",
183 return NT_STATUS_INVALID_PARAMETER;
186 next_command_ofs = IVAL(inhdr, SMB2_HDR_NEXT_COMMAND);
187 if (next_command_ofs != 0) {
188 DEBUG(0,("Invalid SMB packet: next_command: 0x%08X\n",
190 return NT_STATUS_INVALID_PARAMETER;
193 req = smbd_smb2_request_allocate(sconn);
195 return NT_STATUS_NO_MEMORY;
199 talloc_steal(req, inbuf);
201 req->in.vector = talloc_array(req, struct iovec, 4);
202 if (req->in.vector == NULL) {
204 return NT_STATUS_NO_MEMORY;
206 req->in.vector_count = 4;
208 memcpy(req->in.nbt_hdr, inbuf, 4);
211 req->in.vector[0].iov_base = (void *)req->in.nbt_hdr;
212 req->in.vector[0].iov_len = 4;
213 ofs += req->in.vector[0].iov_len;
215 req->in.vector[1].iov_base = (void *)(inbuf + ofs);
216 req->in.vector[1].iov_len = SMB2_HDR_BODY;
217 ofs += req->in.vector[1].iov_len;
219 req->in.vector[2].iov_base = (void *)(inbuf + ofs);
220 req->in.vector[2].iov_len = SVAL(inbuf, ofs) & 0xFFFE;
221 ofs += req->in.vector[2].iov_len;
224 return NT_STATUS_INVALID_PARAMETER;
227 req->in.vector[3].iov_base = (void *)(inbuf + ofs);
228 req->in.vector[3].iov_len = size - ofs;
229 ofs += req->in.vector[3].iov_len;
231 req->current_idx = 1;
237 static NTSTATUS smbd_smb2_request_validate(struct smbd_smb2_request *req)
241 bool compound_related = false;
243 count = req->in.vector_count;
246 /* It's not a SMB2 request */
247 return NT_STATUS_INVALID_PARAMETER;
250 for (idx=1; idx < count; idx += 3) {
251 const uint8_t *inhdr = NULL;
254 if (req->in.vector[idx].iov_len != SMB2_HDR_BODY) {
255 return NT_STATUS_INVALID_PARAMETER;
258 if (req->in.vector[idx+1].iov_len < 2) {
259 return NT_STATUS_INVALID_PARAMETER;
262 inhdr = (const uint8_t *)req->in.vector[idx].iov_base;
264 /* setup the SMB2 header */
265 if (IVAL(inhdr, SMB2_HDR_PROTOCOL_ID) != SMB2_MAGIC) {
266 return NT_STATUS_INVALID_PARAMETER;
269 flags = IVAL(inhdr, SMB2_HDR_FLAGS);
272 * the 1st request should never have the
273 * SMB2_HDR_FLAG_CHAINED flag set
275 if (flags & SMB2_HDR_FLAG_CHAINED) {
276 req->next_status = NT_STATUS_INVALID_PARAMETER;
279 } else if (idx == 4) {
281 * the 2nd request triggers related vs. unrelated
282 * compounded requests
284 if (flags & SMB2_HDR_FLAG_CHAINED) {
285 compound_related = true;
287 } else if (idx > 4) {
290 * It seems the this tests are wrong
291 * see the SMB2-COMPOUND test
295 * all other requests should match the 2nd one
297 if (flags & SMB2_HDR_FLAG_CHAINED) {
298 if (!compound_related) {
300 NT_STATUS_INVALID_PARAMETER;
304 if (compound_related) {
306 NT_STATUS_INVALID_PARAMETER;
317 static NTSTATUS smbd_smb2_request_setup_out(struct smbd_smb2_request *req)
319 struct iovec *vector;
323 count = req->in.vector_count;
324 vector = talloc_array(req, struct iovec, count);
325 if (vector == NULL) {
326 return NT_STATUS_NO_MEMORY;
329 vector[0].iov_base = req->out.nbt_hdr;
330 vector[0].iov_len = 4;
331 SIVAL(req->out.nbt_hdr, 0, 0);
333 for (idx=1; idx < count; idx += 3) {
334 const uint8_t *inhdr = NULL;
336 uint8_t *outhdr = NULL;
337 uint8_t *outbody = NULL;
338 uint32_t next_command_ofs = 0;
339 struct iovec *current = &vector[idx];
341 if ((idx + 3) < count) {
342 /* we have a next command */
343 next_command_ofs = SMB2_HDR_BODY + 8;
346 inhdr = (const uint8_t *)req->in.vector[idx].iov_base;
347 in_flags = IVAL(inhdr, SMB2_HDR_FLAGS);
349 outhdr = talloc_array(vector, uint8_t,
351 if (outhdr == NULL) {
352 return NT_STATUS_NO_MEMORY;
355 outbody = outhdr + SMB2_HDR_BODY;
357 current[0].iov_base = (void *)outhdr;
358 current[0].iov_len = SMB2_HDR_BODY;
360 current[1].iov_base = (void *)outbody;
361 current[1].iov_len = 8;
363 current[2].iov_base = NULL;
364 current[2].iov_len = 0;
366 /* setup the SMB2 header */
367 SIVAL(outhdr, SMB2_HDR_PROTOCOL_ID, SMB2_MAGIC);
368 SSVAL(outhdr, SMB2_HDR_LENGTH, SMB2_HDR_BODY);
369 SSVAL(outhdr, SMB2_HDR_EPOCH, 0);
370 SIVAL(outhdr, SMB2_HDR_STATUS,
371 NT_STATUS_V(NT_STATUS_INTERNAL_ERROR));
372 SSVAL(outhdr, SMB2_HDR_OPCODE,
373 SVAL(inhdr, SMB2_HDR_OPCODE));
374 /* Make up a number for now... JRA. FIXME ! FIXME !*/
375 SSVAL(outhdr, SMB2_HDR_CREDIT, 20);
376 SIVAL(outhdr, SMB2_HDR_FLAGS,
377 IVAL(inhdr, SMB2_HDR_FLAGS) | SMB2_HDR_FLAG_REDIRECT);
378 SIVAL(outhdr, SMB2_HDR_NEXT_COMMAND, next_command_ofs);
379 SBVAL(outhdr, SMB2_HDR_MESSAGE_ID,
380 BVAL(inhdr, SMB2_HDR_MESSAGE_ID));
381 SIVAL(outhdr, SMB2_HDR_PID,
382 IVAL(inhdr, SMB2_HDR_PID));
383 SIVAL(outhdr, SMB2_HDR_TID,
384 IVAL(inhdr, SMB2_HDR_TID));
385 SBVAL(outhdr, SMB2_HDR_SESSION_ID,
386 BVAL(inhdr, SMB2_HDR_SESSION_ID));
387 memset(outhdr + SMB2_HDR_SIGNATURE, 0, 16);
389 /* setup error body header */
390 SSVAL(outbody, 0x00, 0x08 + 1);
391 SSVAL(outbody, 0x02, 0);
392 SIVAL(outbody, 0x04, 0);
395 req->out.vector = vector;
396 req->out.vector_count = count;
398 /* setup the length of the NBT packet */
399 smb2_setup_nbt_length(req->out.vector, req->out.vector_count);
401 DLIST_ADD_END(req->sconn->smb2.requests, req, struct smbd_smb2_request *);
406 void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
408 const char *location)
410 DEBUG(10,("smbd_server_connection_terminate_ex: reason[%s] at %s\n",
412 exit_server_cleanly(reason);
415 struct smbd_smb2_request_pending_state {
416 struct smbd_server_connection *sconn;
417 uint8_t buf[4 + SMB2_HDR_BODY + 0x08];
421 static void smbd_smb2_request_pending_writev_done(struct tevent_req *subreq);
423 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req)
425 struct smbd_smb2_request_pending_state *state;
426 struct tevent_req *subreq;
428 int i = req->current_idx;
435 outhdr = (uint8_t *)req->out.vector[i].iov_base;
437 flags = IVAL(outhdr, SMB2_HDR_FLAGS);
438 message_id = BVAL(outhdr, SMB2_HDR_MESSAGE_ID);
440 async_id = message_id; /* keep it simple for now... */
441 SIVAL(outhdr, SMB2_HDR_FLAGS, flags | SMB2_HDR_FLAG_ASYNC);
442 SBVAL(outhdr, SMB2_HDR_PID, async_id);
444 /* TODO: add a paramter to delay this */
445 state = talloc(req->sconn, struct smbd_smb2_request_pending_state);
447 return NT_STATUS_NO_MEMORY;
449 state->sconn = req->sconn;
451 state->vector.iov_base = (void *)state->buf;
452 state->vector.iov_len = sizeof(state->buf);
454 _smb2_setlen(state->buf, sizeof(state->buf) - 4);
455 hdr = state->buf + 4;
456 body = hdr + SMB2_HDR_BODY;
458 SIVAL(hdr, SMB2_HDR_PROTOCOL_ID, SMB2_MAGIC);
459 SSVAL(hdr, SMB2_HDR_LENGTH, SMB2_HDR_BODY);
460 SSVAL(hdr, SMB2_HDR_EPOCH, 0);
461 SIVAL(hdr, SMB2_HDR_STATUS, NT_STATUS_V(STATUS_PENDING));
462 SSVAL(hdr, SMB2_HDR_OPCODE,
463 SVAL(outhdr, SMB2_HDR_OPCODE));
464 SSVAL(hdr, SMB2_HDR_CREDIT, 1);
465 SIVAL(hdr, SMB2_HDR_FLAGS,
466 IVAL(outhdr, SMB2_HDR_FLAGS));
467 SIVAL(hdr, SMB2_HDR_NEXT_COMMAND, 0);
468 SBVAL(hdr, SMB2_HDR_MESSAGE_ID,
469 BVAL(outhdr, SMB2_HDR_MESSAGE_ID));
470 SBVAL(hdr, SMB2_HDR_PID,
471 BVAL(outhdr, SMB2_HDR_PID));
472 SBVAL(hdr, SMB2_HDR_SESSION_ID,
473 BVAL(outhdr, SMB2_HDR_SESSION_ID));
474 memset(hdr+SMB2_HDR_SIGNATURE, 0, 16);
476 SSVAL(body, 0x00, 0x08 + 1);
478 SCVAL(body, 0x02, 0);
479 SCVAL(body, 0x03, 0);
480 SIVAL(body, 0x04, 0);
482 subreq = tstream_writev_queue_send(state,
483 req->sconn->smb2.event_ctx,
484 req->sconn->smb2.stream,
485 req->sconn->smb2.send_queue,
487 if (subreq == NULL) {
488 return NT_STATUS_NO_MEMORY;
490 tevent_req_set_callback(subreq,
491 smbd_smb2_request_pending_writev_done,
497 static void smbd_smb2_request_pending_writev_done(struct tevent_req *subreq)
499 struct smbd_smb2_request_pending_state *state =
500 tevent_req_callback_data(subreq,
501 struct smbd_smb2_request_pending_state);
502 struct smbd_server_connection *sconn = state->sconn;
506 ret = tstream_writev_queue_recv(subreq, &sys_errno);
509 NTSTATUS status = map_nt_error_from_unix(sys_errno);
510 smbd_server_connection_terminate(sconn, nt_errstr(status));
517 static NTSTATUS smbd_smb2_request_process_cancel(struct smbd_smb2_request *req)
519 struct smbd_server_connection *sconn = req->sconn;
520 struct smbd_smb2_request *cur;
521 const uint8_t *inhdr;
522 int i = req->current_idx;
524 uint64_t search_message_id;
525 uint64_t search_async_id;
527 inhdr = (const uint8_t *)req->in.vector[i].iov_base;
529 flags = IVAL(inhdr, SMB2_HDR_FLAGS);
530 search_message_id = BVAL(inhdr, SMB2_HDR_MESSAGE_ID);
531 search_async_id = BVAL(inhdr, SMB2_HDR_PID);
534 * we don't need the request anymore
535 * cancel requests never have a response
539 for (cur = sconn->smb2.requests; cur; cur = cur->next) {
540 const uint8_t *outhdr;
544 i = cur->current_idx;
546 outhdr = (const uint8_t *)cur->out.vector[i].iov_base;
548 message_id = BVAL(outhdr, SMB2_HDR_MESSAGE_ID);
549 async_id = BVAL(outhdr, SMB2_HDR_PID);
551 if (flags & SMB2_HDR_FLAG_ASYNC) {
552 if (search_async_id == async_id) {
556 if (search_message_id == message_id) {
563 /* TODO: try to cancel the request */
569 static NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req)
571 const uint8_t *inhdr;
572 int i = req->current_idx;
576 NTSTATUS session_status;
578 inhdr = (const uint8_t *)req->in.vector[i].iov_base;
580 /* TODO: verify more things */
582 flags = IVAL(inhdr, SMB2_HDR_FLAGS);
583 opcode = IVAL(inhdr, SMB2_HDR_OPCODE);
584 DEBUG(10,("smbd_smb2_request_dispatch: opcode[%u]\n", opcode));
586 #define TMP_SMB2_ALLOWED_FLAGS ( \
587 SMB2_HDR_FLAG_CHAINED | \
588 SMB2_HDR_FLAG_SIGNED | \
590 if ((flags & ~TMP_SMB2_ALLOWED_FLAGS) != 0) {
591 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
593 #undef TMP_SMB2_ALLOWED_FLAGS
595 session_status = smbd_smb2_request_check_session(req);
597 req->do_signing = false;
598 if (flags & SMB2_HDR_FLAG_SIGNED) {
599 if (!NT_STATUS_IS_OK(session_status)) {
600 return smbd_smb2_request_error(req, session_status);
603 req->do_signing = true;
604 status = smb2_signing_check_pdu(req->session->session_key,
605 &req->in.vector[i], 3);
606 if (!NT_STATUS_IS_OK(status)) {
607 return smbd_smb2_request_error(req, status);
609 } else if (req->session && req->session->do_signing) {
610 return smbd_smb2_request_error(req, NT_STATUS_ACCESS_DENIED);
613 if (flags & SMB2_HDR_FLAG_CHAINED) {
615 * This check is mostly for giving the correct error code
616 * for compounded requests.
618 * TODO: we may need to move this after the session
621 if (!NT_STATUS_IS_OK(req->next_status)) {
622 return smbd_smb2_request_error(req, req->next_status);
625 req->compat_chain_fsp = NULL;
629 case SMB2_OP_NEGPROT:
630 return smbd_smb2_request_process_negprot(req);
632 case SMB2_OP_SESSSETUP:
633 return smbd_smb2_request_process_sesssetup(req);
636 if (!NT_STATUS_IS_OK(session_status)) {
637 return smbd_smb2_request_error(req, session_status);
639 return smbd_smb2_request_process_logoff(req);
642 if (!NT_STATUS_IS_OK(session_status)) {
643 return smbd_smb2_request_error(req, session_status);
645 status = smbd_smb2_request_check_session(req);
646 if (!NT_STATUS_IS_OK(status)) {
647 return smbd_smb2_request_error(req, status);
649 return smbd_smb2_request_process_tcon(req);
652 if (!NT_STATUS_IS_OK(session_status)) {
653 return smbd_smb2_request_error(req, session_status);
655 status = smbd_smb2_request_check_tcon(req);
656 if (!NT_STATUS_IS_OK(status)) {
657 return smbd_smb2_request_error(req, status);
659 return smbd_smb2_request_process_tdis(req);
662 if (!NT_STATUS_IS_OK(session_status)) {
663 return smbd_smb2_request_error(req, session_status);
665 status = smbd_smb2_request_check_tcon(req);
666 if (!NT_STATUS_IS_OK(status)) {
667 return smbd_smb2_request_error(req, status);
669 return smbd_smb2_request_process_create(req);
672 if (!NT_STATUS_IS_OK(session_status)) {
673 return smbd_smb2_request_error(req, session_status);
675 status = smbd_smb2_request_check_tcon(req);
676 if (!NT_STATUS_IS_OK(status)) {
677 return smbd_smb2_request_error(req, status);
679 return smbd_smb2_request_process_close(req);
682 if (!NT_STATUS_IS_OK(session_status)) {
683 return smbd_smb2_request_error(req, session_status);
685 status = smbd_smb2_request_check_tcon(req);
686 if (!NT_STATUS_IS_OK(status)) {
687 return smbd_smb2_request_error(req, status);
689 return smbd_smb2_request_process_flush(req);
692 if (!NT_STATUS_IS_OK(session_status)) {
693 return smbd_smb2_request_error(req, session_status);
695 status = smbd_smb2_request_check_tcon(req);
696 if (!NT_STATUS_IS_OK(status)) {
697 return smbd_smb2_request_error(req, status);
699 return smbd_smb2_request_process_read(req);
702 if (!NT_STATUS_IS_OK(session_status)) {
703 return smbd_smb2_request_error(req, session_status);
705 status = smbd_smb2_request_check_tcon(req);
706 if (!NT_STATUS_IS_OK(status)) {
707 return smbd_smb2_request_error(req, status);
709 return smbd_smb2_request_process_write(req);
712 if (!NT_STATUS_IS_OK(session_status)) {
713 return smbd_smb2_request_error(req, session_status);
715 status = smbd_smb2_request_check_tcon(req);
716 if (!NT_STATUS_IS_OK(status)) {
717 return smbd_smb2_request_error(req, status);
719 return smbd_smb2_request_process_lock(req);
722 if (!NT_STATUS_IS_OK(session_status)) {
723 return smbd_smb2_request_error(req, session_status);
725 status = smbd_smb2_request_check_tcon(req);
726 if (!NT_STATUS_IS_OK(status)) {
727 return smbd_smb2_request_error(req, status);
729 return smbd_smb2_request_process_ioctl(req);
732 return smbd_smb2_request_process_cancel(req);
734 case SMB2_OP_KEEPALIVE:
735 return smbd_smb2_request_process_keepalive(req);
738 if (!NT_STATUS_IS_OK(session_status)) {
739 return smbd_smb2_request_error(req, session_status);
741 status = smbd_smb2_request_check_tcon(req);
742 if (!NT_STATUS_IS_OK(status)) {
743 return smbd_smb2_request_error(req, status);
745 return smbd_smb2_request_process_find(req);
748 if (!NT_STATUS_IS_OK(session_status)) {
749 return smbd_smb2_request_error(req, session_status);
751 status = smbd_smb2_request_check_tcon(req);
752 if (!NT_STATUS_IS_OK(status)) {
753 return smbd_smb2_request_error(req, status);
755 return smbd_smb2_request_process_notify(req);
757 case SMB2_OP_GETINFO:
758 if (!NT_STATUS_IS_OK(session_status)) {
759 return smbd_smb2_request_error(req, session_status);
761 status = smbd_smb2_request_check_tcon(req);
762 if (!NT_STATUS_IS_OK(status)) {
763 return smbd_smb2_request_error(req, status);
765 return smbd_smb2_request_process_getinfo(req);
767 case SMB2_OP_SETINFO:
768 if (!NT_STATUS_IS_OK(session_status)) {
769 return smbd_smb2_request_error(req, session_status);
771 status = smbd_smb2_request_check_tcon(req);
772 if (!NT_STATUS_IS_OK(status)) {
773 return smbd_smb2_request_error(req, status);
775 return smbd_smb2_request_process_setinfo(req);
778 if (!NT_STATUS_IS_OK(session_status)) {
779 return smbd_smb2_request_error(req, session_status);
781 status = smbd_smb2_request_check_tcon(req);
782 if (!NT_STATUS_IS_OK(status)) {
783 return smbd_smb2_request_error(req, status);
785 return smbd_smb2_request_process_break(req);
788 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
791 static void smbd_smb2_request_dispatch_compound(struct tevent_req *subreq);
792 static void smbd_smb2_request_writev_done(struct tevent_req *subreq);
794 static NTSTATUS smbd_smb2_request_reply(struct smbd_smb2_request *req)
796 struct tevent_req *subreq;
798 smb2_setup_nbt_length(req->out.vector, req->out.vector_count);
800 if (req->do_signing) {
801 int i = req->current_idx;
803 status = smb2_signing_sign_pdu(req->session->session_key,
804 &req->out.vector[i], 3);
805 if (!NT_STATUS_IS_OK(status)) {
810 req->current_idx += 3;
812 if (req->current_idx < req->out.vector_count) {
813 struct timeval zero = timeval_zero();
814 subreq = tevent_wakeup_send(req,
815 req->sconn->smb2.event_ctx,
817 if (subreq == NULL) {
818 return NT_STATUS_NO_MEMORY;
820 tevent_req_set_callback(subreq,
821 smbd_smb2_request_dispatch_compound,
827 subreq = tstream_writev_queue_send(req,
828 req->sconn->smb2.event_ctx,
829 req->sconn->smb2.stream,
830 req->sconn->smb2.send_queue,
832 req->out.vector_count);
833 if (subreq == NULL) {
834 return NT_STATUS_NO_MEMORY;
836 tevent_req_set_callback(subreq, smbd_smb2_request_writev_done, req);
841 static void smbd_smb2_request_dispatch_compound(struct tevent_req *subreq)
843 struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
844 struct smbd_smb2_request);
845 struct smbd_server_connection *sconn = req->sconn;
848 tevent_wakeup_recv(subreq);
851 DEBUG(10,("smbd_smb2_request_dispatch_compound: idx[%d] of %d vectors\n",
852 req->current_idx, req->in.vector_count));
854 status = smbd_smb2_request_dispatch(req);
855 if (!NT_STATUS_IS_OK(status)) {
856 smbd_server_connection_terminate(sconn, nt_errstr(status));
861 static void smbd_smb2_request_writev_done(struct tevent_req *subreq)
863 struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
864 struct smbd_smb2_request);
865 struct smbd_server_connection *sconn = req->sconn;
869 ret = tstream_writev_queue_recv(subreq, &sys_errno);
873 NTSTATUS status = map_nt_error_from_unix(sys_errno);
874 smbd_server_connection_terminate(sconn, nt_errstr(status));
879 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
882 const char *location)
886 int i = req->current_idx;
888 DEBUG(10,("smbd_smb2_request_error_ex: idx[%d] status[%s] |%s| at %s\n",
889 i, nt_errstr(status), info ? " +info" : "",
892 outhdr = (uint8_t *)req->out.vector[i].iov_base;
894 SIVAL(outhdr, SMB2_HDR_STATUS, NT_STATUS_V(status));
896 outbody = outhdr + SMB2_HDR_BODY;
898 req->out.vector[i+1].iov_base = (void *)outbody;
899 req->out.vector[i+1].iov_len = 8;
902 SIVAL(outbody, 0x04, info->length);
903 req->out.vector[i+2].iov_base = (void *)info->data;
904 req->out.vector[i+2].iov_len = info->length;
906 req->out.vector[i+2].iov_base = NULL;
907 req->out.vector[i+2].iov_len = 0;
911 * if a request fails, all other remaining
912 * compounded requests should fail too
914 req->next_status = NT_STATUS_INVALID_PARAMETER;
916 return smbd_smb2_request_reply(req);
919 NTSTATUS smbd_smb2_request_done_ex(struct smbd_smb2_request *req,
921 DATA_BLOB body, DATA_BLOB *dyn,
922 const char *location)
926 int i = req->current_idx;
927 uint32_t next_command_ofs;
929 DEBUG(10,("smbd_smb2_request_done_ex: "
930 "idx[%d] status[%s] body[%u] dyn[%s:%u] at %s\n",
931 i, nt_errstr(status), (unsigned int)body.length,
933 (unsigned int)(dyn ? dyn->length : 0),
936 if (body.length < 2) {
937 return smbd_smb2_request_error(req, NT_STATUS_INTERNAL_ERROR);
940 if ((body.length % 2) != 0) {
941 return smbd_smb2_request_error(req, NT_STATUS_INTERNAL_ERROR);
944 outhdr = (uint8_t *)req->out.vector[i].iov_base;
945 /* the fallback dynamic buffer */
946 outdyn = outhdr + SMB2_HDR_BODY + 8;
948 next_command_ofs = IVAL(outhdr, SMB2_HDR_NEXT_COMMAND);
949 SIVAL(outhdr, SMB2_HDR_STATUS, NT_STATUS_V(status));
951 req->out.vector[i+1].iov_base = (void *)body.data;
952 req->out.vector[i+1].iov_len = body.length;
955 req->out.vector[i+2].iov_base = (void *)dyn->data;
956 req->out.vector[i+2].iov_len = dyn->length;
958 req->out.vector[i+2].iov_base = NULL;
959 req->out.vector[i+2].iov_len = 0;
962 /* see if we need to recalculate the offset to the next response */
963 if (next_command_ofs > 0) {
964 next_command_ofs = SMB2_HDR_BODY;
965 next_command_ofs += req->out.vector[i+1].iov_len;
966 next_command_ofs += req->out.vector[i+2].iov_len;
969 if ((next_command_ofs % 8) != 0) {
970 size_t pad_size = 8 - (next_command_ofs % 8);
971 if (req->out.vector[i+2].iov_len == 0) {
973 * if the dyn buffer is empty
974 * we can use it to add padding
978 pad = talloc_zero_array(req->out.vector,
981 return smbd_smb2_request_error(req,
982 NT_STATUS_NO_MEMORY);
985 req->out.vector[i+2].iov_base = (void *)pad;
986 req->out.vector[i+2].iov_len = pad_size;
989 * For now we copy the dynamic buffer
990 * and add the padding to the new buffer
997 old_size = req->out.vector[i+2].iov_len;
998 old_dyn = (uint8_t *)req->out.vector[i+2].iov_base;
1000 new_size = old_size + pad_size;
1001 new_dyn = talloc_array(req->out.vector,
1003 if (new_dyn == NULL) {
1004 return smbd_smb2_request_error(req,
1005 NT_STATUS_NO_MEMORY);
1008 memcpy(new_dyn, old_dyn, old_size);
1009 memset(new_dyn + old_size, 0, pad_size);
1011 req->out.vector[i+2].iov_base = (void *)new_dyn;
1012 req->out.vector[i+2].iov_len = new_size;
1014 TALLOC_FREE(old_dyn);
1016 next_command_ofs += pad_size;
1019 SIVAL(outhdr, SMB2_HDR_NEXT_COMMAND, next_command_ofs);
1021 return smbd_smb2_request_reply(req);
1024 struct smbd_smb2_send_oplock_break_state {
1025 struct smbd_server_connection *sconn;
1026 uint8_t buf[4 + SMB2_HDR_BODY + 0x18];
1027 struct iovec vector;
1030 static void smbd_smb2_oplock_break_writev_done(struct tevent_req *subreq);
1032 NTSTATUS smbd_smb2_send_oplock_break(struct smbd_server_connection *sconn,
1033 uint64_t file_id_persistent,
1034 uint64_t file_id_volatile,
1035 uint8_t oplock_level)
1037 struct smbd_smb2_send_oplock_break_state *state;
1038 struct tevent_req *subreq;
1042 state = talloc(sconn, struct smbd_smb2_send_oplock_break_state);
1043 if (state == NULL) {
1044 return NT_STATUS_NO_MEMORY;
1046 state->sconn = sconn;
1048 state->vector.iov_base = (void *)state->buf;
1049 state->vector.iov_len = sizeof(state->buf);
1051 _smb2_setlen(state->buf, sizeof(state->buf) - 4);
1052 hdr = state->buf + 4;
1053 body = hdr + SMB2_HDR_BODY;
1055 SIVAL(hdr, 0, SMB2_MAGIC);
1056 SSVAL(hdr, SMB2_HDR_LENGTH, SMB2_HDR_BODY);
1057 SSVAL(hdr, SMB2_HDR_EPOCH, 0);
1058 SIVAL(hdr, SMB2_HDR_STATUS, 0);
1059 SSVAL(hdr, SMB2_HDR_OPCODE, SMB2_OP_BREAK);
1060 SSVAL(hdr, SMB2_HDR_CREDIT, 0);
1061 SIVAL(hdr, SMB2_HDR_FLAGS, SMB2_HDR_FLAG_REDIRECT);
1062 SIVAL(hdr, SMB2_HDR_NEXT_COMMAND, 0);
1063 SBVAL(hdr, SMB2_HDR_MESSAGE_ID, UINT64_MAX);
1064 SIVAL(hdr, SMB2_HDR_PID, 0);
1065 SIVAL(hdr, SMB2_HDR_TID, 0);
1066 SBVAL(hdr, SMB2_HDR_SESSION_ID, 0);
1067 memset(hdr+SMB2_HDR_SIGNATURE, 0, 16);
1069 SSVAL(body, 0x00, 0x18);
1071 SCVAL(body, 0x02, oplock_level);
1072 SCVAL(body, 0x03, 0); /* reserved */
1073 SIVAL(body, 0x04, 0); /* reserved */
1074 SBVAL(body, 0x08, file_id_persistent);
1075 SBVAL(body, 0x10, file_id_volatile);
1077 subreq = tstream_writev_queue_send(state,
1078 sconn->smb2.event_ctx,
1080 sconn->smb2.send_queue,
1082 if (subreq == NULL) {
1083 return NT_STATUS_NO_MEMORY;
1085 tevent_req_set_callback(subreq,
1086 smbd_smb2_oplock_break_writev_done,
1089 return NT_STATUS_OK;
1092 static void smbd_smb2_oplock_break_writev_done(struct tevent_req *subreq)
1094 struct smbd_smb2_send_oplock_break_state *state =
1095 tevent_req_callback_data(subreq,
1096 struct smbd_smb2_send_oplock_break_state);
1097 struct smbd_server_connection *sconn = state->sconn;
1101 ret = tstream_writev_queue_recv(subreq, &sys_errno);
1102 TALLOC_FREE(subreq);
1104 NTSTATUS status = map_nt_error_from_unix(sys_errno);
1105 smbd_server_connection_terminate(sconn, nt_errstr(status));
1112 struct smbd_smb2_request_read_state {
1114 bool asked_for_header;
1115 struct smbd_smb2_request *smb2_req;
1118 static int smbd_smb2_request_next_vector(struct tstream_context *stream,
1120 TALLOC_CTX *mem_ctx,
1121 struct iovec **_vector,
1123 static void smbd_smb2_request_read_done(struct tevent_req *subreq);
1125 static struct tevent_req *smbd_smb2_request_read_send(TALLOC_CTX *mem_ctx,
1126 struct tevent_context *ev,
1127 struct smbd_server_connection *sconn)
1129 struct tevent_req *req;
1130 struct smbd_smb2_request_read_state *state;
1131 struct tevent_req *subreq;
1133 req = tevent_req_create(mem_ctx, &state,
1134 struct smbd_smb2_request_read_state);
1139 state->asked_for_header = false;
1141 state->smb2_req = smbd_smb2_request_allocate(state);
1142 if (tevent_req_nomem(state->smb2_req, req)) {
1143 return tevent_req_post(req, ev);
1145 state->smb2_req->sconn = sconn;
1147 subreq = tstream_readv_pdu_queue_send(state, ev, sconn->smb2.stream,
1148 sconn->smb2.recv_queue,
1149 smbd_smb2_request_next_vector,
1151 if (tevent_req_nomem(subreq, req)) {
1152 return tevent_req_post(req, ev);
1154 tevent_req_set_callback(subreq, smbd_smb2_request_read_done, req);
1159 static int smbd_smb2_request_next_vector(struct tstream_context *stream,
1161 TALLOC_CTX *mem_ctx,
1162 struct iovec **_vector,
1165 struct smbd_smb2_request_read_state *state =
1166 talloc_get_type_abort(private_data,
1167 struct smbd_smb2_request_read_state);
1168 struct smbd_smb2_request *req = state->smb2_req;
1169 struct iovec *vector;
1170 int idx = req->in.vector_count;
1172 uint8_t *buf = NULL;
1174 if (req->in.vector_count == 0) {
1176 * first we need to get the NBT header
1178 req->in.vector = talloc_array(req, struct iovec,
1179 req->in.vector_count + 1);
1180 if (req->in.vector == NULL) {
1183 req->in.vector_count += 1;
1185 req->in.vector[idx].iov_base = (void *)req->in.nbt_hdr;
1186 req->in.vector[idx].iov_len = 4;
1188 vector = talloc_array(mem_ctx, struct iovec, 1);
1189 if (vector == NULL) {
1193 vector[0] = req->in.vector[idx];
1200 if (req->in.vector_count == 1) {
1202 * Now we analyze the NBT header
1204 state->missing = smb2_len(req->in.vector[0].iov_base);
1206 if (state->missing == 0) {
1207 /* if there're no remaining bytes, we're done */
1213 req->in.vector = talloc_realloc(req, req->in.vector,
1215 req->in.vector_count + 1);
1216 if (req->in.vector == NULL) {
1219 req->in.vector_count += 1;
1221 if (CVAL(req->in.vector[0].iov_base, 0) != 0) {
1223 * it's a special NBT message,
1224 * so get all remaining bytes
1226 len = state->missing;
1227 } else if (state->missing < (SMB2_HDR_BODY + 2)) {
1229 * it's an invalid message, just read what we can get
1230 * and let the caller handle the error
1232 len = state->missing;
1235 * We assume it's a SMB2 request,
1236 * and we first get the header and the
1237 * first 2 bytes (the struct size) of the body
1239 len = SMB2_HDR_BODY + 2;
1241 state->asked_for_header = true;
1244 state->missing -= len;
1246 buf = talloc_array(req->in.vector, uint8_t, len);
1251 req->in.vector[idx].iov_base = (void *)buf;
1252 req->in.vector[idx].iov_len = len;
1254 vector = talloc_array(mem_ctx, struct iovec, 1);
1255 if (vector == NULL) {
1259 vector[0] = req->in.vector[idx];
1266 if (state->missing == 0) {
1267 /* if there're no remaining bytes, we're done */
1273 if (state->asked_for_header) {
1276 size_t next_command_ofs;
1281 bool invalid = false;
1283 state->asked_for_header = false;
1286 * We got the SMB2 header and the first 2 bytes
1287 * of the body. We fix the size to just the header
1288 * and manually copy the 2 first bytes to the body section
1290 req->in.vector[idx-1].iov_len = SMB2_HDR_BODY;
1291 hdr = (const uint8_t *)req->in.vector[idx-1].iov_base;
1293 /* allocate vectors for body and dynamic areas */
1294 req->in.vector = talloc_realloc(req, req->in.vector,
1296 req->in.vector_count + 2);
1297 if (req->in.vector == NULL) {
1300 req->in.vector_count += 2;
1302 full_size = state->missing + SMB2_HDR_BODY + 2;
1303 next_command_ofs = IVAL(hdr, SMB2_HDR_NEXT_COMMAND);
1304 body_size = SVAL(hdr, SMB2_HDR_BODY);
1306 if (next_command_ofs != 0) {
1307 if (next_command_ofs < (SMB2_HDR_BODY + 2)) {
1309 * this is invalid, just return a zero
1310 * body and let the caller deal with the error
1313 } else if (next_command_ofs > full_size) {
1315 * this is invalid, just return a zero
1316 * body and let the caller deal with the error
1320 full_size = next_command_ofs;
1325 if (body_size < 2) {
1327 * this is invalid, just return a zero
1328 * body and let the caller deal with the error
1333 if ((body_size % 2) != 0) {
1337 if (body_size > (full_size - SMB2_HDR_BODY)) {
1339 * this is invalid, just return a zero
1340 * body and let the caller deal with the error
1347 /* the caller should check this */
1351 dyn_size = full_size - (SMB2_HDR_BODY + body_size);
1353 state->missing -= (body_size - 2) + dyn_size;
1355 body = talloc_array(req->in.vector, uint8_t, body_size);
1360 dyn = talloc_array(req->in.vector, uint8_t, dyn_size);
1365 req->in.vector[idx].iov_base = (void *)body;
1366 req->in.vector[idx].iov_len = body_size;
1367 req->in.vector[idx+1].iov_base = (void *)dyn;
1368 req->in.vector[idx+1].iov_len = dyn_size;
1370 vector = talloc_array(mem_ctx, struct iovec, 2);
1371 if (vector == NULL) {
1376 * the first 2 bytes of the body were already fetched
1377 * together with the header
1379 memcpy(body, hdr + SMB2_HDR_BODY, 2);
1380 vector[0].iov_base = body + 2;
1381 vector[0].iov_len = body_size - 2;
1383 vector[1] = req->in.vector[idx+1];
1391 * when we endup here, we're looking for a new SMB2 request
1392 * next. And we ask for its header and the first 2 bytes of
1393 * the body (like we did for the first SMB2 request).
1396 req->in.vector = talloc_realloc(req, req->in.vector,
1398 req->in.vector_count + 1);
1399 if (req->in.vector == NULL) {
1402 req->in.vector_count += 1;
1405 * We assume it's a SMB2 request,
1406 * and we first get the header and the
1407 * first 2 bytes (the struct size) of the body
1409 len = SMB2_HDR_BODY + 2;
1411 if (len > state->missing) {
1412 /* let the caller handle the error */
1413 len = state->missing;
1416 state->missing -= len;
1417 state->asked_for_header = true;
1419 buf = talloc_array(req->in.vector, uint8_t, len);
1424 req->in.vector[idx].iov_base = (void *)buf;
1425 req->in.vector[idx].iov_len = len;
1427 vector = talloc_array(mem_ctx, struct iovec, 1);
1428 if (vector == NULL) {
1432 vector[0] = req->in.vector[idx];
1439 static void smbd_smb2_request_read_done(struct tevent_req *subreq)
1441 struct tevent_req *req =
1442 tevent_req_callback_data(subreq,
1448 ret = tstream_readv_pdu_queue_recv(subreq, &sys_errno);
1450 status = map_nt_error_from_unix(sys_errno);
1451 tevent_req_nterror(req, status);
1455 tevent_req_done(req);
1458 static NTSTATUS smbd_smb2_request_read_recv(struct tevent_req *req,
1459 TALLOC_CTX *mem_ctx,
1460 struct smbd_smb2_request **_smb2_req)
1462 struct smbd_smb2_request_read_state *state =
1463 tevent_req_data(req,
1464 struct smbd_smb2_request_read_state);
1467 if (tevent_req_is_nterror(req, &status)) {
1468 tevent_req_received(req);
1472 talloc_steal(mem_ctx, state->smb2_req->mem_pool);
1473 *_smb2_req = state->smb2_req;
1474 tevent_req_received(req);
1475 return NT_STATUS_OK;
1478 static void smbd_smb2_request_incoming(struct tevent_req *subreq);
1480 void smbd_smb2_first_negprot(struct smbd_server_connection *sconn,
1481 const uint8_t *inbuf, size_t size)
1484 struct smbd_smb2_request *req;
1485 struct tevent_req *subreq;
1487 DEBUG(10,("smbd_smb2_first_negprot: packet length %u\n",
1488 (unsigned int)size));
1490 status = smbd_initialize_smb2(sconn);
1491 if (!NT_STATUS_IS_OK(status)) {
1492 smbd_server_connection_terminate(sconn, nt_errstr(status));
1496 status = smbd_smb2_request_create(sconn, inbuf, size, &req);
1497 if (!NT_STATUS_IS_OK(status)) {
1498 smbd_server_connection_terminate(sconn, nt_errstr(status));
1502 status = smbd_smb2_request_setup_out(req);
1503 if (!NT_STATUS_IS_OK(status)) {
1504 smbd_server_connection_terminate(sconn, nt_errstr(status));
1508 status = smbd_smb2_request_dispatch(req);
1509 if (!NT_STATUS_IS_OK(status)) {
1510 smbd_server_connection_terminate(sconn, nt_errstr(status));
1514 /* ask for the next request */
1515 subreq = smbd_smb2_request_read_send(sconn, sconn->smb2.event_ctx, sconn);
1516 if (subreq == NULL) {
1517 smbd_server_connection_terminate(sconn, "no memory for reading");
1520 tevent_req_set_callback(subreq, smbd_smb2_request_incoming, sconn);
1523 static void smbd_smb2_request_incoming(struct tevent_req *subreq)
1525 struct smbd_server_connection *sconn = tevent_req_callback_data(subreq,
1526 struct smbd_server_connection);
1528 struct smbd_smb2_request *req = NULL;
1530 status = smbd_smb2_request_read_recv(subreq, sconn, &req);
1531 TALLOC_FREE(subreq);
1532 if (!NT_STATUS_IS_OK(status)) {
1533 smbd_server_connection_terminate(sconn, nt_errstr(status));
1537 if (req->in.nbt_hdr[0] != 0x00) {
1538 DEBUG(1,("smbd_smb2_request_incoming: ignore NBT[0x%02X] msg\n",
1539 req->in.nbt_hdr[0]));
1544 req->current_idx = 1;
1546 DEBUG(10,("smbd_smb2_request_incoming: idx[%d] of %d vectors\n",
1547 req->current_idx, req->in.vector_count));
1549 status = smbd_smb2_request_validate(req);
1550 if (!NT_STATUS_IS_OK(status)) {
1551 smbd_server_connection_terminate(sconn, nt_errstr(status));
1555 status = smbd_smb2_request_setup_out(req);
1556 if (!NT_STATUS_IS_OK(status)) {
1557 smbd_server_connection_terminate(sconn, nt_errstr(status));
1561 status = smbd_smb2_request_dispatch(req);
1562 if (!NT_STATUS_IS_OK(status)) {
1563 smbd_server_connection_terminate(sconn, nt_errstr(status));
1568 /* ask for the next request (this constructs the main loop) */
1569 subreq = smbd_smb2_request_read_send(sconn, sconn->smb2.event_ctx, sconn);
1570 if (subreq == NULL) {
1571 smbd_server_connection_terminate(sconn, "no memory for reading");
1574 tevent_req_set_callback(subreq, smbd_smb2_request_incoming, sconn);