2 Unix SMB/CIFS implementation.
5 Copyright (C) Stefan Metzmacher 2009
6 Copyright (C) Jeremy Allison 2010
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.
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.
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/>.
23 #include "smbd/globals.h"
24 #include "../libcli/smb/smb_common.h"
25 #include "../lib/tsocket/tsocket.h"
27 #define OUTVEC_ALLOC_SIZE (SMB2_HDR_BODY + 9)
29 static const char *smb2_names[] = {
51 const char *smb2_opcode_name(uint16_t opcode)
54 return "Bad SMB2 opcode";
56 return smb2_names[opcode];
59 static void print_req_vectors(struct smbd_smb2_request *req)
63 for (i = 0; i < req->in.vector_count; i++) {
64 dbgtext("\treq->in.vector[%u].iov_len = %u\n",
66 (unsigned int)req->in.vector[i].iov_len);
68 for (i = 0; i < req->out.vector_count; i++) {
69 dbgtext("\treq->out.vector[%u].iov_len = %u\n",
71 (unsigned int)req->out.vector[i].iov_len);
75 bool smbd_is_smb2_header(const uint8_t *inbuf, size_t size)
77 if (size < (4 + SMB2_HDR_BODY)) {
81 if (IVAL(inbuf, 4) != SMB2_MAGIC) {
88 static NTSTATUS smbd_initialize_smb2(struct smbd_server_connection *sconn)
93 TALLOC_FREE(sconn->smb1.fde);
95 sconn->smb2.event_ctx = smbd_event_context();
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;
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;
107 sconn->smb2.sessions.idtree = idr_init(sconn);
108 if (sconn->smb2.sessions.idtree == NULL) {
109 return NT_STATUS_NO_MEMORY;
111 sconn->smb2.sessions.limit = 0x0000FFFE;
112 sconn->smb2.sessions.list = NULL;
113 sconn->smb2.seqnum_low = 0;
114 sconn->smb2.credits_granted = 0;
115 sconn->smb2.max_credits = lp_smb2_max_credits();
116 sconn->smb2.credits_bitmap = bitmap_talloc(sconn, 2*sconn->smb2.max_credits);
117 if (sconn->smb2.credits_bitmap == NULL) {
118 return NT_STATUS_NO_MEMORY;
121 ret = tstream_bsd_existing_socket(sconn, sconn->sock,
122 &sconn->smb2.stream);
124 status = map_nt_error_from_unix(errno);
128 /* Ensure child is set to non-blocking mode */
129 set_blocking(sconn->sock, false);
133 #define smb2_len(buf) (PVAL(buf,3)|(PVAL(buf,2)<<8)|(PVAL(buf,1)<<16))
134 #define _smb2_setlen(_buf,len) do { \
135 uint8_t *buf = (uint8_t *)_buf; \
137 buf[1] = ((len)&0xFF0000)>>16; \
138 buf[2] = ((len)&0xFF00)>>8; \
139 buf[3] = (len)&0xFF; \
142 static void smb2_setup_nbt_length(struct iovec *vector, int count)
147 for (i=1; i < count; i++) {
148 len += vector[i].iov_len;
151 _smb2_setlen(vector[0].iov_base, len);
154 static int smbd_smb2_request_parent_destructor(struct smbd_smb2_request **req)
157 (*req)->parent = NULL;
158 (*req)->mem_pool = NULL;
164 static int smbd_smb2_request_destructor(struct smbd_smb2_request *req)
168 talloc_free(req->mem_pool);
174 static struct smbd_smb2_request *smbd_smb2_request_allocate(TALLOC_CTX *mem_ctx)
176 TALLOC_CTX *mem_pool;
177 struct smbd_smb2_request **parent;
178 struct smbd_smb2_request *req;
181 /* Enable this to find subtle valgrind errors. */
182 mem_pool = talloc_init("smbd_smb2_request_allocate");
184 mem_pool = talloc_pool(mem_ctx, 8192);
186 if (mem_pool == NULL) {
190 parent = talloc(mem_pool, struct smbd_smb2_request *);
191 if (parent == NULL) {
192 talloc_free(mem_pool);
196 req = talloc_zero(parent, struct smbd_smb2_request);
198 talloc_free(mem_pool);
202 req->mem_pool = mem_pool;
203 req->parent = parent;
205 talloc_set_destructor(parent, smbd_smb2_request_parent_destructor);
206 talloc_set_destructor(req, smbd_smb2_request_destructor);
211 static NTSTATUS smbd_smb2_request_create(struct smbd_server_connection *sconn,
212 const uint8_t *inbuf, size_t size,
213 struct smbd_smb2_request **_req)
215 struct smbd_smb2_request *req;
216 uint32_t protocol_version;
217 const uint8_t *inhdr = NULL;
220 uint32_t next_command_ofs;
222 if (size < (4 + SMB2_HDR_BODY + 2)) {
223 DEBUG(0,("Invalid SMB2 packet length count %ld\n", (long)size));
224 return NT_STATUS_INVALID_PARAMETER;
229 protocol_version = IVAL(inhdr, SMB2_HDR_PROTOCOL_ID);
230 if (protocol_version != SMB2_MAGIC) {
231 DEBUG(0,("Invalid SMB packet: protocol prefix: 0x%08X\n",
233 return NT_STATUS_INVALID_PARAMETER;
236 cmd = SVAL(inhdr, SMB2_HDR_OPCODE);
237 if (cmd != SMB2_OP_NEGPROT) {
238 DEBUG(0,("Invalid SMB packet: first request: 0x%04X\n",
240 return NT_STATUS_INVALID_PARAMETER;
243 next_command_ofs = IVAL(inhdr, SMB2_HDR_NEXT_COMMAND);
244 if (next_command_ofs != 0) {
245 DEBUG(0,("Invalid SMB packet: next_command: 0x%08X\n",
247 return NT_STATUS_INVALID_PARAMETER;
250 req = smbd_smb2_request_allocate(sconn);
252 return NT_STATUS_NO_MEMORY;
256 talloc_steal(req, inbuf);
258 req->in.vector = talloc_array(req, struct iovec, 4);
259 if (req->in.vector == NULL) {
261 return NT_STATUS_NO_MEMORY;
263 req->in.vector_count = 4;
265 memcpy(req->in.nbt_hdr, inbuf, 4);
268 req->in.vector[0].iov_base = (void *)req->in.nbt_hdr;
269 req->in.vector[0].iov_len = 4;
270 ofs += req->in.vector[0].iov_len;
272 req->in.vector[1].iov_base = (void *)(inbuf + ofs);
273 req->in.vector[1].iov_len = SMB2_HDR_BODY;
274 ofs += req->in.vector[1].iov_len;
276 req->in.vector[2].iov_base = (void *)(inbuf + ofs);
277 req->in.vector[2].iov_len = SVAL(inbuf, ofs) & 0xFFFE;
278 ofs += req->in.vector[2].iov_len;
281 return NT_STATUS_INVALID_PARAMETER;
284 req->in.vector[3].iov_base = (void *)(inbuf + ofs);
285 req->in.vector[3].iov_len = size - ofs;
286 ofs += req->in.vector[3].iov_len;
288 req->current_idx = 1;
294 static bool smb2_validate_message_id(struct smbd_server_connection *sconn,
295 const uint8_t *inhdr)
297 uint64_t message_id = BVAL(inhdr, SMB2_HDR_MESSAGE_ID);
298 struct bitmap *credits_bm = sconn->smb2.credits_bitmap;
299 uint16_t opcode = IVAL(inhdr, SMB2_HDR_OPCODE);
300 unsigned int bitmap_offset;
302 if (opcode == SMB2_OP_CANCEL) {
303 /* SMB2_CANCEL requests by definition resend messageids. */
307 if (message_id < sconn->smb2.seqnum_low ||
308 message_id > (sconn->smb2.seqnum_low +
309 (2*sconn->smb2.credits_granted))) {
310 DEBUG(0,("smb2_validate_message_id: bad message_id "
311 "%llu (low = %llu, granted = %lu)\n",
312 (unsigned long long)message_id,
313 (unsigned long long)sconn->smb2.seqnum_low,
314 (unsigned long)sconn->smb2.credits_granted ));
318 /* client just used a credit. */
319 SMB_ASSERT(sconn->smb2.credits_granted > 0);
320 sconn->smb2.credits_granted -= 1;
322 /* Mark the message_id as seen in the bitmap. */
323 bitmap_offset = (unsigned int)(message_id %
324 (uint64_t)(sconn->smb2.max_credits * 2));
325 if (bitmap_query(credits_bm, bitmap_offset)) {
326 DEBUG(0,("smb2_validate_message_id: duplicate message_id "
327 "%llu (bm offset %u)\n",
328 (unsigned long long)message_id,
332 bitmap_set(credits_bm, bitmap_offset);
334 if (message_id == sconn->smb2.seqnum_low + 1) {
335 /* Move the window forward by all the message_id's
337 while (bitmap_query(credits_bm, bitmap_offset)) {
338 DEBUG(10,("smb2_validate_message_id: clearing "
339 "id %llu (position %u) from bitmap\n",
340 (unsigned long long)(sconn->smb2.seqnum_low + 1),
342 bitmap_clear(credits_bm, bitmap_offset);
343 sconn->smb2.seqnum_low += 1;
344 bitmap_offset = (bitmap_offset + 1) %
345 (sconn->smb2.max_credits * 2);
352 static NTSTATUS smbd_smb2_request_validate(struct smbd_smb2_request *req)
356 bool compound_related = false;
358 count = req->in.vector_count;
361 /* It's not a SMB2 request */
362 return NT_STATUS_INVALID_PARAMETER;
365 for (idx=1; idx < count; idx += 3) {
366 const uint8_t *inhdr = NULL;
369 if (req->in.vector[idx].iov_len != SMB2_HDR_BODY) {
370 return NT_STATUS_INVALID_PARAMETER;
373 if (req->in.vector[idx+1].iov_len < 2) {
374 return NT_STATUS_INVALID_PARAMETER;
377 inhdr = (const uint8_t *)req->in.vector[idx].iov_base;
379 /* Check the SMB2 header */
380 if (IVAL(inhdr, SMB2_HDR_PROTOCOL_ID) != SMB2_MAGIC) {
381 return NT_STATUS_INVALID_PARAMETER;
384 if (!smb2_validate_message_id(req->sconn, inhdr)) {
385 return NT_STATUS_INVALID_PARAMETER;
388 flags = IVAL(inhdr, SMB2_HDR_FLAGS);
391 * the 1st request should never have the
392 * SMB2_HDR_FLAG_CHAINED flag set
394 if (flags & SMB2_HDR_FLAG_CHAINED) {
395 req->next_status = NT_STATUS_INVALID_PARAMETER;
398 } else if (idx == 4) {
400 * the 2nd request triggers related vs. unrelated
401 * compounded requests
403 if (flags & SMB2_HDR_FLAG_CHAINED) {
404 compound_related = true;
406 } else if (idx > 4) {
409 * It seems the this tests are wrong
410 * see the SMB2-COMPOUND test
414 * all other requests should match the 2nd one
416 if (flags & SMB2_HDR_FLAG_CHAINED) {
417 if (!compound_related) {
419 NT_STATUS_INVALID_PARAMETER;
423 if (compound_related) {
425 NT_STATUS_INVALID_PARAMETER;
436 static void smb2_set_operation_credit(struct smbd_server_connection *sconn,
437 const struct iovec *in_vector,
438 struct iovec *out_vector)
440 uint8_t *outhdr = out_vector->iov_base;
441 uint16_t credits_requested = 0;
442 uint16_t credits_granted = 0;
444 if (in_vector != NULL) {
445 const uint8_t *inhdr = (const uint8_t *)in_vector->iov_base;
446 credits_requested = SVAL(inhdr, SMB2_HDR_CREDIT);
449 SMB_ASSERT(sconn->smb2.max_credits >= sconn->smb2.credits_granted);
451 /* Remember what we gave out. */
452 credits_granted = MIN(credits_requested, (sconn->smb2.max_credits -
453 sconn->smb2.credits_granted));
455 if (credits_granted == 0 && sconn->smb2.credits_granted == 0) {
456 /* First negprot packet, or ensure the client credits can
457 never drop to zero. */
461 SSVAL(outhdr, SMB2_HDR_CREDIT, credits_granted);
462 sconn->smb2.credits_granted += credits_granted;
464 DEBUG(10,("smb2_set_operation_credit: requested %u, "
465 "granted %u, total granted %u\n",
466 (unsigned int)credits_requested,
467 (unsigned int)credits_granted,
468 (unsigned int)sconn->smb2.credits_granted ));
471 static void smb2_calculate_credits(const struct smbd_smb2_request *inreq,
472 struct smbd_smb2_request *outreq)
476 count = outreq->out.vector_count;
478 for (idx=1; idx < count; idx += 3) {
479 smb2_set_operation_credit(outreq->sconn,
480 &inreq->in.vector[idx],
481 &outreq->out.vector[idx]);
485 static NTSTATUS smbd_smb2_request_setup_out(struct smbd_smb2_request *req)
487 struct iovec *vector;
491 count = req->in.vector_count;
492 vector = talloc_zero_array(req, struct iovec, count);
493 if (vector == NULL) {
494 return NT_STATUS_NO_MEMORY;
497 vector[0].iov_base = req->out.nbt_hdr;
498 vector[0].iov_len = 4;
499 SIVAL(req->out.nbt_hdr, 0, 0);
501 for (idx=1; idx < count; idx += 3) {
502 const uint8_t *inhdr = NULL;
504 uint8_t *outhdr = NULL;
505 uint8_t *outbody = NULL;
506 uint32_t next_command_ofs = 0;
507 struct iovec *current = &vector[idx];
509 if ((idx + 3) < count) {
510 /* we have a next command -
511 * setup for the error case. */
512 next_command_ofs = SMB2_HDR_BODY + 9;
515 inhdr = (const uint8_t *)req->in.vector[idx].iov_base;
516 in_flags = IVAL(inhdr, SMB2_HDR_FLAGS);
518 outhdr = talloc_zero_array(vector, uint8_t,
520 if (outhdr == NULL) {
521 return NT_STATUS_NO_MEMORY;
524 outbody = outhdr + SMB2_HDR_BODY;
526 current[0].iov_base = (void *)outhdr;
527 current[0].iov_len = SMB2_HDR_BODY;
529 current[1].iov_base = (void *)outbody;
530 current[1].iov_len = 8;
532 current[2].iov_base = NULL;
533 current[2].iov_len = 0;
535 /* setup the SMB2 header */
536 SIVAL(outhdr, SMB2_HDR_PROTOCOL_ID, SMB2_MAGIC);
537 SSVAL(outhdr, SMB2_HDR_LENGTH, SMB2_HDR_BODY);
538 SSVAL(outhdr, SMB2_HDR_EPOCH, 0);
539 SIVAL(outhdr, SMB2_HDR_STATUS,
540 NT_STATUS_V(NT_STATUS_INTERNAL_ERROR));
541 SSVAL(outhdr, SMB2_HDR_OPCODE,
542 SVAL(inhdr, SMB2_HDR_OPCODE));
543 SIVAL(outhdr, SMB2_HDR_FLAGS,
544 IVAL(inhdr, SMB2_HDR_FLAGS) | SMB2_HDR_FLAG_REDIRECT);
545 SIVAL(outhdr, SMB2_HDR_NEXT_COMMAND, next_command_ofs);
546 SBVAL(outhdr, SMB2_HDR_MESSAGE_ID,
547 BVAL(inhdr, SMB2_HDR_MESSAGE_ID));
548 SIVAL(outhdr, SMB2_HDR_PID,
549 IVAL(inhdr, SMB2_HDR_PID));
550 SIVAL(outhdr, SMB2_HDR_TID,
551 IVAL(inhdr, SMB2_HDR_TID));
552 SBVAL(outhdr, SMB2_HDR_SESSION_ID,
553 BVAL(inhdr, SMB2_HDR_SESSION_ID));
554 memset(outhdr + SMB2_HDR_SIGNATURE, 0, 16);
556 /* setup error body header */
557 SSVAL(outbody, 0x00, 0x08 + 1);
558 SSVAL(outbody, 0x02, 0);
559 SIVAL(outbody, 0x04, 0);
562 req->out.vector = vector;
563 req->out.vector_count = count;
565 /* setup the length of the NBT packet */
566 smb2_setup_nbt_length(req->out.vector, req->out.vector_count);
568 DLIST_ADD_END(req->sconn->smb2.requests, req, struct smbd_smb2_request *);
573 void smbd_server_connection_terminate_ex(struct smbd_server_connection *sconn,
575 const char *location)
577 DEBUG(10,("smbd_server_connection_terminate_ex: reason[%s] at %s\n",
579 exit_server_cleanly(reason);
582 static bool dup_smb2_vec3(TALLOC_CTX *ctx,
583 struct iovec *outvec,
584 const struct iovec *srcvec)
586 /* vec[0] is always boilerplate and must
587 * be allocated with size OUTVEC_ALLOC_SIZE. */
589 outvec[0].iov_base = talloc_memdup(ctx,
592 if (!outvec[0].iov_base) {
595 outvec[0].iov_len = SMB2_HDR_BODY;
598 * If this is a "standard" vec[1] of length 8,
599 * pointing to srcvec[0].iov_base + SMB2_HDR_BODY,
600 * then duplicate this. Else use talloc_memdup().
603 if (srcvec[1].iov_len == 8 &&
604 srcvec[1].iov_base ==
605 ((uint8_t *)srcvec[0].iov_base) +
607 outvec[1].iov_base = ((uint8_t *)outvec[1].iov_base) +
609 outvec[1].iov_len = 8;
611 outvec[1].iov_base = talloc_memdup(ctx,
614 if (!outvec[1].iov_base) {
617 outvec[1].iov_len = srcvec[1].iov_len;
621 * If this is a "standard" vec[2] of length 1,
622 * pointing to srcvec[0].iov_base + (OUTVEC_ALLOC_SIZE - 1)
623 * then duplicate this. Else use talloc_memdup().
626 if (srcvec[2].iov_base &&
628 if (srcvec[2].iov_base ==
629 ((uint8_t *)srcvec[0].iov_base) +
630 (OUTVEC_ALLOC_SIZE - 1) &&
631 srcvec[2].iov_len == 1) {
632 /* Common SMB2 error packet case. */
633 outvec[2].iov_base = ((uint8_t *)outvec[0].iov_base) +
634 (OUTVEC_ALLOC_SIZE - 1);
636 outvec[2].iov_base = talloc_memdup(ctx,
639 if (!outvec[2].iov_base) {
643 outvec[2].iov_len = srcvec[2].iov_len;
645 outvec[2].iov_base = NULL;
646 outvec[2].iov_len = 0;
651 static struct smbd_smb2_request *dup_smb2_req(const struct smbd_smb2_request *req)
653 struct smbd_smb2_request *newreq = NULL;
654 struct iovec *outvec = NULL;
655 int count = req->out.vector_count;
658 newreq = smbd_smb2_request_allocate(req->sconn);
663 newreq->sconn = req->sconn;
664 newreq->do_signing = req->do_signing;
665 newreq->current_idx = req->current_idx;
666 newreq->async = false;
667 newreq->cancelled = false;
669 outvec = talloc_zero_array(newreq, struct iovec, count);
674 newreq->out.vector = outvec;
675 newreq->out.vector_count = count;
677 /* Setup the outvec's identically to req. */
678 outvec[0].iov_base = newreq->out.nbt_hdr;
679 outvec[0].iov_len = 4;
680 memcpy(newreq->out.nbt_hdr, req->out.nbt_hdr, 4);
682 /* Setup the vectors identically to the ones in req. */
683 for (i = 1; i < count; i += 3) {
684 if (!dup_smb2_vec3(outvec, &outvec[i], &req->out.vector[i])) {
695 smb2_setup_nbt_length(newreq->out.vector,
696 newreq->out.vector_count);
701 static void smbd_smb2_request_writev_done(struct tevent_req *subreq);
703 static NTSTATUS smb2_send_async_interim_response(const struct smbd_smb2_request *req)
706 uint8_t *outhdr = NULL;
707 struct smbd_smb2_request *nreq = NULL;
709 /* Create a new smb2 request we'll use
710 for the interim return. */
711 nreq = dup_smb2_req(req);
713 return NT_STATUS_NO_MEMORY;
716 /* Lose the last 3 out vectors. They're the
717 ones we'll be using for the async reply. */
718 nreq->out.vector_count -= 3;
720 smb2_setup_nbt_length(nreq->out.vector,
721 nreq->out.vector_count);
723 /* Step back to the previous reply. */
724 i = nreq->current_idx - 3;
725 outhdr = (uint8_t *)nreq->out.vector[i].iov_base;
726 /* And end the chain. */
727 SIVAL(outhdr, SMB2_HDR_NEXT_COMMAND, 0);
729 /* Calculate outgoing credits */
730 smb2_calculate_credits(req, nreq);
732 /* Re-sign if needed. */
733 if (nreq->do_signing) {
735 status = smb2_signing_sign_pdu(nreq->session->session_key,
736 &nreq->out.vector[i], 3);
737 if (!NT_STATUS_IS_OK(status)) {
741 if (DEBUGLEVEL >= 10) {
742 dbgtext("smb2_send_async_interim_response: nreq->current_idx = %u\n",
743 (unsigned int)nreq->current_idx );
744 dbgtext("smb2_send_async_interim_response: returning %u vectors\n",
745 (unsigned int)nreq->out.vector_count );
746 print_req_vectors(nreq);
748 nreq->subreq = tstream_writev_queue_send(nreq,
749 nreq->sconn->smb2.event_ctx,
750 nreq->sconn->smb2.stream,
751 nreq->sconn->smb2.send_queue,
753 nreq->out.vector_count);
755 if (nreq->subreq == NULL) {
756 return NT_STATUS_NO_MEMORY;
759 tevent_req_set_callback(nreq->subreq,
760 smbd_smb2_request_writev_done,
766 struct smbd_smb2_request_pending_state {
767 struct smbd_server_connection *sconn;
768 uint8_t buf[4 + SMB2_HDR_BODY + 0x08 + 1];
769 struct iovec vector[3];
772 static void smbd_smb2_request_pending_writev_done(struct tevent_req *subreq)
774 struct smbd_smb2_request_pending_state *state =
775 tevent_req_callback_data(subreq,
776 struct smbd_smb2_request_pending_state);
777 struct smbd_server_connection *sconn = state->sconn;
781 ret = tstream_writev_queue_recv(subreq, &sys_errno);
784 NTSTATUS status = map_nt_error_from_unix(sys_errno);
785 smbd_server_connection_terminate(sconn, nt_errstr(status));
792 NTSTATUS smbd_smb2_request_pending_queue(struct smbd_smb2_request *req,
793 struct tevent_req *subreq)
796 struct smbd_smb2_request_pending_state *state = NULL;
797 int i = req->current_idx;
798 uint8_t *reqhdr = NULL;
800 uint8_t *body = NULL;
802 uint64_t message_id = 0;
803 uint64_t async_id = 0;
804 struct iovec *outvec = NULL;
806 if (!tevent_req_is_in_progress(subreq)) {
810 req->subreq = subreq;
814 /* We're already async. */
818 if (req->in.vector_count > i + 3) {
820 * We're trying to go async in a compound
821 * request chain. This is not allowed.
822 * Cancel the outstanding request.
824 tevent_req_cancel(req->subreq);
825 return smbd_smb2_request_error(req,
826 NT_STATUS_INSUFFICIENT_RESOURCES);
829 if (DEBUGLEVEL >= 10) {
830 dbgtext("smbd_smb2_request_pending_queue: req->current_idx = %u\n",
831 (unsigned int)req->current_idx );
832 print_req_vectors(req);
835 if (req->out.vector_count > 4) {
836 /* This is a compound reply. We
837 * must do an interim response
838 * followed by the async response
841 status = smb2_send_async_interim_response(req);
842 if (!NT_STATUS_IS_OK(status)) {
847 /* Don't return an intermediate packet on a pipe read/write. */
848 if (req->tcon && req->tcon->compat_conn && IS_IPC(req->tcon->compat_conn)) {
852 reqhdr = (uint8_t *)req->out.vector[i].iov_base;
853 flags = (IVAL(reqhdr, SMB2_HDR_FLAGS) & ~SMB2_HDR_FLAG_CHAINED);
854 message_id = BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
855 async_id = message_id; /* keep it simple for now... */
858 * What we send is identical to a smbd_smb2_request_error
859 * packet with an error status of STATUS_PENDING. Make use
860 * of this fact sometime when refactoring. JRA.
863 state = talloc_zero(req->sconn, struct smbd_smb2_request_pending_state);
865 return NT_STATUS_NO_MEMORY;
867 state->sconn = req->sconn;
869 state->vector[0].iov_base = (void *)state->buf;
870 state->vector[0].iov_len = 4;
872 state->vector[1].iov_base = state->buf + 4;
873 state->vector[1].iov_len = SMB2_HDR_BODY;
875 state->vector[2].iov_base = state->buf + 4 + SMB2_HDR_BODY;
876 state->vector[2].iov_len = 9;
878 smb2_setup_nbt_length(state->vector, 3);
880 hdr = (uint8_t *)state->vector[1].iov_base;
881 body = (uint8_t *)state->vector[2].iov_base;
883 SIVAL(hdr, SMB2_HDR_PROTOCOL_ID, SMB2_MAGIC);
884 SSVAL(hdr, SMB2_HDR_LENGTH, SMB2_HDR_BODY);
885 SSVAL(hdr, SMB2_HDR_EPOCH, 0);
886 SIVAL(hdr, SMB2_HDR_STATUS, NT_STATUS_V(STATUS_PENDING));
887 SSVAL(hdr, SMB2_HDR_OPCODE, SVAL(reqhdr, SMB2_HDR_OPCODE));
889 SIVAL(hdr, SMB2_HDR_FLAGS, flags | SMB2_HDR_FLAG_ASYNC);
890 SIVAL(hdr, SMB2_HDR_NEXT_COMMAND, 0);
891 SBVAL(hdr, SMB2_HDR_MESSAGE_ID, message_id);
892 SBVAL(hdr, SMB2_HDR_PID, async_id);
893 SBVAL(hdr, SMB2_HDR_SESSION_ID,
894 BVAL(reqhdr, SMB2_HDR_SESSION_ID));
895 memset(hdr+SMB2_HDR_SIGNATURE, 0, 16);
897 SSVAL(body, 0x00, 0x08 + 1);
899 SCVAL(body, 0x02, 0);
900 SCVAL(body, 0x03, 0);
901 SIVAL(body, 0x04, 0);
902 /* Match W2K8R2... */
903 SCVAL(body, 0x08, 0x21);
905 /* Ensure we correctly go through crediting. Grant
906 the credits now, and zero credits on the final
908 smb2_set_operation_credit(req->sconn,
912 if (req->do_signing) {
913 status = smb2_signing_sign_pdu(req->session->session_key,
915 if (!NT_STATUS_IS_OK(status)) {
920 subreq = tstream_writev_queue_send(state,
921 req->sconn->smb2.event_ctx,
922 req->sconn->smb2.stream,
923 req->sconn->smb2.send_queue,
927 if (subreq == NULL) {
928 return NT_STATUS_NO_MEMORY;
931 tevent_req_set_callback(subreq,
932 smbd_smb2_request_pending_writev_done,
935 /* Note we're going async with this request. */
939 * Now manipulate req so that the outstanding async request
940 * is the only one left in the struct smbd_smb2_request.
943 if (req->current_idx == 1) {
944 /* There was only one. */
948 /* Re-arrange the in.vectors. */
949 req->in.vector[1] = req->in.vector[i];
950 req->in.vector[2] = req->in.vector[i+1];
951 req->in.vector[3] = req->in.vector[i+2];
952 req->in.vector_count = 4;
953 /* Reset the new in size. */
954 smb2_setup_nbt_length(req->in.vector, 4);
956 /* Now recreate the out.vectors. */
957 outvec = talloc_zero_array(req, struct iovec, 4);
959 return NT_STATUS_NO_MEMORY;
962 /* 0 is always boilerplate and must
963 * be of size 4 for the length field. */
965 outvec[0].iov_base = req->out.nbt_hdr;
966 outvec[0].iov_len = 4;
967 SIVAL(req->out.nbt_hdr, 0, 0);
969 if (!dup_smb2_vec3(outvec, &outvec[1], &req->out.vector[i])) {
970 return NT_STATUS_NO_MEMORY;
973 TALLOC_FREE(req->out.vector);
975 req->out.vector = outvec;
977 req->current_idx = 1;
978 req->out.vector_count = 4;
982 smb2_setup_nbt_length(req->out.vector,
983 req->out.vector_count);
985 /* Ensure our final reply matches the interim one. */
986 reqhdr = (uint8_t *)req->out.vector[1].iov_base;
987 SIVAL(reqhdr, SMB2_HDR_FLAGS, flags | SMB2_HDR_FLAG_ASYNC);
988 SBVAL(reqhdr, SMB2_HDR_PID, async_id);
991 const uint8_t *inhdr =
992 (const uint8_t *)req->in.vector[1].iov_base;
993 DEBUG(10,("smbd_smb2_request_pending_queue: opcode[%s] mid %llu "
995 smb2_opcode_name((uint16_t)IVAL(inhdr, SMB2_HDR_OPCODE)),
996 (unsigned long long)async_id ));
1001 static NTSTATUS smbd_smb2_request_process_cancel(struct smbd_smb2_request *req)
1003 struct smbd_server_connection *sconn = req->sconn;
1004 struct smbd_smb2_request *cur;
1005 const uint8_t *inhdr;
1006 int i = req->current_idx;
1008 uint64_t search_message_id;
1009 uint64_t search_async_id;
1012 inhdr = (const uint8_t *)req->in.vector[i].iov_base;
1014 flags = IVAL(inhdr, SMB2_HDR_FLAGS);
1015 search_message_id = BVAL(inhdr, SMB2_HDR_MESSAGE_ID);
1016 search_async_id = BVAL(inhdr, SMB2_HDR_PID);
1019 * we don't need the request anymore
1020 * cancel requests never have a response
1022 DLIST_REMOVE(req->sconn->smb2.requests, req);
1025 for (cur = sconn->smb2.requests; cur; cur = cur->next) {
1026 const uint8_t *outhdr;
1027 uint64_t message_id;
1030 i = cur->current_idx;
1032 outhdr = (const uint8_t *)cur->out.vector[i].iov_base;
1034 message_id = BVAL(outhdr, SMB2_HDR_MESSAGE_ID);
1035 async_id = BVAL(outhdr, SMB2_HDR_PID);
1037 if (flags & SMB2_HDR_FLAG_ASYNC) {
1038 if (search_async_id == async_id) {
1039 found_id = async_id;
1043 if (search_message_id == message_id) {
1044 found_id = message_id;
1050 if (cur && cur->subreq) {
1051 inhdr = (const uint8_t *)cur->in.vector[i].iov_base;
1052 DEBUG(10,("smbd_smb2_request_process_cancel: attempting to "
1053 "cancel opcode[%s] mid %llu\n",
1054 smb2_opcode_name((uint16_t)IVAL(inhdr, SMB2_HDR_OPCODE)),
1055 (unsigned long long)found_id ));
1056 tevent_req_cancel(cur->subreq);
1059 return NT_STATUS_OK;
1062 NTSTATUS smbd_smb2_request_dispatch(struct smbd_smb2_request *req)
1064 const uint8_t *inhdr;
1065 int i = req->current_idx;
1070 NTSTATUS session_status;
1071 uint32_t allowed_flags;
1072 NTSTATUS return_value;
1074 inhdr = (const uint8_t *)req->in.vector[i].iov_base;
1076 /* TODO: verify more things */
1078 flags = IVAL(inhdr, SMB2_HDR_FLAGS);
1079 opcode = IVAL(inhdr, SMB2_HDR_OPCODE);
1080 mid = BVAL(inhdr, SMB2_HDR_MESSAGE_ID);
1081 DEBUG(10,("smbd_smb2_request_dispatch: opcode[%s] mid = %llu\n",
1082 smb2_opcode_name(opcode),
1083 (unsigned long long)mid));
1085 allowed_flags = SMB2_HDR_FLAG_CHAINED |
1086 SMB2_HDR_FLAG_SIGNED |
1088 if (opcode == SMB2_OP_CANCEL) {
1089 allowed_flags |= SMB2_HDR_FLAG_ASYNC;
1091 if ((flags & ~allowed_flags) != 0) {
1092 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
1095 session_status = smbd_smb2_request_check_session(req);
1097 req->do_signing = false;
1098 if (flags & SMB2_HDR_FLAG_SIGNED) {
1099 if (!NT_STATUS_IS_OK(session_status)) {
1100 return smbd_smb2_request_error(req, session_status);
1103 req->do_signing = true;
1104 status = smb2_signing_check_pdu(req->session->session_key,
1105 &req->in.vector[i], 3);
1106 if (!NT_STATUS_IS_OK(status)) {
1107 return smbd_smb2_request_error(req, status);
1109 } else if (req->session && req->session->do_signing) {
1110 return smbd_smb2_request_error(req, NT_STATUS_ACCESS_DENIED);
1113 if (flags & SMB2_HDR_FLAG_CHAINED) {
1115 * This check is mostly for giving the correct error code
1116 * for compounded requests.
1118 * TODO: we may need to move this after the session
1121 if (!NT_STATUS_IS_OK(req->next_status)) {
1122 return smbd_smb2_request_error(req, req->next_status);
1125 req->compat_chain_fsp = NULL;
1129 case SMB2_OP_NEGPROT:
1131 START_PROFILE(smb2_negprot);
1132 return_value = smbd_smb2_request_process_negprot(req);
1133 END_PROFILE(smb2_negprot);
1137 case SMB2_OP_SESSSETUP:
1139 START_PROFILE(smb2_sesssetup);
1140 return_value = smbd_smb2_request_process_sesssetup(req);
1141 END_PROFILE(smb2_sesssetup);
1145 case SMB2_OP_LOGOFF:
1146 if (!NT_STATUS_IS_OK(session_status)) {
1147 return_value = smbd_smb2_request_error(req, session_status);
1152 START_PROFILE(smb2_logoff);
1153 return_value = smbd_smb2_request_process_logoff(req);
1154 END_PROFILE(smb2_logoff);
1159 if (!NT_STATUS_IS_OK(session_status)) {
1160 return_value = smbd_smb2_request_error(req, session_status);
1163 status = smbd_smb2_request_check_session(req);
1164 if (!NT_STATUS_IS_OK(status)) {
1165 return_value = smbd_smb2_request_error(req, status);
1170 START_PROFILE(smb2_tcon);
1171 return_value = smbd_smb2_request_process_tcon(req);
1172 END_PROFILE(smb2_tcon);
1177 if (!NT_STATUS_IS_OK(session_status)) {
1178 return_value = smbd_smb2_request_error(req, session_status);
1181 status = smbd_smb2_request_check_tcon(req);
1182 if (!NT_STATUS_IS_OK(status)) {
1183 return_value = smbd_smb2_request_error(req, status);
1188 START_PROFILE(smb2_tdis);
1189 return_value = smbd_smb2_request_process_tdis(req);
1190 END_PROFILE(smb2_tdis);
1194 case SMB2_OP_CREATE:
1195 if (!NT_STATUS_IS_OK(session_status)) {
1196 return_value = smbd_smb2_request_error(req, session_status);
1199 status = smbd_smb2_request_check_tcon(req);
1200 if (!NT_STATUS_IS_OK(status)) {
1201 return_value = smbd_smb2_request_error(req, status);
1206 START_PROFILE(smb2_create);
1207 return_value = smbd_smb2_request_process_create(req);
1208 END_PROFILE(smb2_create);
1213 if (!NT_STATUS_IS_OK(session_status)) {
1214 return_value = smbd_smb2_request_error(req, session_status);
1217 status = smbd_smb2_request_check_tcon(req);
1218 if (!NT_STATUS_IS_OK(status)) {
1219 return_value = smbd_smb2_request_error(req, status);
1224 START_PROFILE(smb2_close);
1225 return_value = smbd_smb2_request_process_close(req);
1226 END_PROFILE(smb2_close);
1231 if (!NT_STATUS_IS_OK(session_status)) {
1232 return_value = smbd_smb2_request_error(req, session_status);
1235 status = smbd_smb2_request_check_tcon(req);
1236 if (!NT_STATUS_IS_OK(status)) {
1237 return_value = smbd_smb2_request_error(req, status);
1242 START_PROFILE(smb2_flush);
1243 return_value = smbd_smb2_request_process_flush(req);
1244 END_PROFILE(smb2_flush);
1249 if (!NT_STATUS_IS_OK(session_status)) {
1250 return_value = smbd_smb2_request_error(req, session_status);
1253 status = smbd_smb2_request_check_tcon(req);
1254 if (!NT_STATUS_IS_OK(status)) {
1255 return_value = smbd_smb2_request_error(req, status);
1260 START_PROFILE(smb2_read);
1261 return_value = smbd_smb2_request_process_read(req);
1262 END_PROFILE(smb2_read);
1267 if (!NT_STATUS_IS_OK(session_status)) {
1268 return_value = smbd_smb2_request_error(req, session_status);
1271 status = smbd_smb2_request_check_tcon(req);
1272 if (!NT_STATUS_IS_OK(status)) {
1273 return_value = smbd_smb2_request_error(req, status);
1278 START_PROFILE(smb2_write);
1279 return_value = smbd_smb2_request_process_write(req);
1280 END_PROFILE(smb2_write);
1285 if (!NT_STATUS_IS_OK(session_status)) {
1286 /* Too ugly to live ? JRA. */
1287 if (NT_STATUS_EQUAL(session_status,NT_STATUS_USER_SESSION_DELETED)) {
1288 session_status = NT_STATUS_FILE_CLOSED;
1290 return_value = smbd_smb2_request_error(req, session_status);
1293 status = smbd_smb2_request_check_tcon(req);
1294 if (!NT_STATUS_IS_OK(status)) {
1295 /* Too ugly to live ? JRA. */
1296 if (NT_STATUS_EQUAL(status,NT_STATUS_NETWORK_NAME_DELETED)) {
1297 status = NT_STATUS_FILE_CLOSED;
1299 return_value = smbd_smb2_request_error(req, status);
1304 START_PROFILE(smb2_lock);
1305 return_value = smbd_smb2_request_process_lock(req);
1306 END_PROFILE(smb2_lock);
1311 if (!NT_STATUS_IS_OK(session_status)) {
1312 return_value = smbd_smb2_request_error(req, session_status);
1315 status = smbd_smb2_request_check_tcon(req);
1316 if (!NT_STATUS_IS_OK(status)) {
1317 return_value = smbd_smb2_request_error(req, status);
1322 START_PROFILE(smb2_ioctl);
1323 return_value = smbd_smb2_request_process_ioctl(req);
1324 END_PROFILE(smb2_ioctl);
1328 case SMB2_OP_CANCEL:
1330 START_PROFILE(smb2_cancel);
1331 return_value = smbd_smb2_request_process_cancel(req);
1332 END_PROFILE(smb2_cancel);
1336 case SMB2_OP_KEEPALIVE:
1337 {START_PROFILE(smb2_keepalive);
1338 return_value = smbd_smb2_request_process_keepalive(req);
1339 END_PROFILE(smb2_keepalive);}
1343 if (!NT_STATUS_IS_OK(session_status)) {
1344 return_value = smbd_smb2_request_error(req, session_status);
1347 status = smbd_smb2_request_check_tcon(req);
1348 if (!NT_STATUS_IS_OK(status)) {
1349 return_value = smbd_smb2_request_error(req, status);
1354 START_PROFILE(smb2_find);
1355 return_value = smbd_smb2_request_process_find(req);
1356 END_PROFILE(smb2_find);
1360 case SMB2_OP_NOTIFY:
1361 if (!NT_STATUS_IS_OK(session_status)) {
1362 return_value = smbd_smb2_request_error(req, session_status);
1365 status = smbd_smb2_request_check_tcon(req);
1366 if (!NT_STATUS_IS_OK(status)) {
1367 return_value = smbd_smb2_request_error(req, status);
1372 START_PROFILE(smb2_notify);
1373 return_value = smbd_smb2_request_process_notify(req);
1374 END_PROFILE(smb2_notify);
1378 case SMB2_OP_GETINFO:
1379 if (!NT_STATUS_IS_OK(session_status)) {
1380 return_value = smbd_smb2_request_error(req, session_status);
1383 status = smbd_smb2_request_check_tcon(req);
1384 if (!NT_STATUS_IS_OK(status)) {
1385 return_value = smbd_smb2_request_error(req, status);
1390 START_PROFILE(smb2_getinfo);
1391 return_value = smbd_smb2_request_process_getinfo(req);
1392 END_PROFILE(smb2_getinfo);
1396 case SMB2_OP_SETINFO:
1397 if (!NT_STATUS_IS_OK(session_status)) {
1398 return_value = smbd_smb2_request_error(req, session_status);
1401 status = smbd_smb2_request_check_tcon(req);
1402 if (!NT_STATUS_IS_OK(status)) {
1403 return_value = smbd_smb2_request_error(req, status);
1408 START_PROFILE(smb2_setinfo);
1409 return_value = smbd_smb2_request_process_setinfo(req);
1410 END_PROFILE(smb2_setinfo);
1415 if (!NT_STATUS_IS_OK(session_status)) {
1416 return_value = smbd_smb2_request_error(req, session_status);
1419 status = smbd_smb2_request_check_tcon(req);
1420 if (!NT_STATUS_IS_OK(status)) {
1421 return_value = smbd_smb2_request_error(req, status);
1426 START_PROFILE(smb2_break);
1427 return_value = smbd_smb2_request_process_break(req);
1428 END_PROFILE(smb2_break);
1433 return_value = smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
1436 return return_value;
1439 static NTSTATUS smbd_smb2_request_reply(struct smbd_smb2_request *req)
1441 struct tevent_req *subreq;
1442 int i = req->current_idx;
1446 smb2_setup_nbt_length(req->out.vector, req->out.vector_count);
1448 /* Set credit for this operation (zero credits if this
1449 is a final reply for an async operation). */
1450 smb2_set_operation_credit(req->sconn,
1451 req->async ? NULL : &req->in.vector[i],
1452 &req->out.vector[i]);
1454 if (req->do_signing) {
1456 status = smb2_signing_sign_pdu(req->session->session_key,
1457 &req->out.vector[i], 3);
1458 if (!NT_STATUS_IS_OK(status)) {
1463 req->current_idx += 3;
1465 if (req->current_idx < req->out.vector_count) {
1467 * We must process the remaining compound
1468 * SMB2 requests before any new incoming SMB2
1469 * requests. This is because incoming SMB2
1470 * requests may include a cancel for a
1471 * compound request we haven't processed
1474 struct tevent_immediate *im = tevent_create_immediate(req);
1476 return NT_STATUS_NO_MEMORY;
1478 tevent_schedule_immediate(im,
1479 req->sconn->smb2.event_ctx,
1480 smbd_smb2_request_dispatch_immediate,
1482 return NT_STATUS_OK;
1485 if (DEBUGLEVEL >= 10) {
1486 dbgtext("smbd_smb2_request_reply: sending...\n");
1487 print_req_vectors(req);
1490 subreq = tstream_writev_queue_send(req,
1491 req->sconn->smb2.event_ctx,
1492 req->sconn->smb2.stream,
1493 req->sconn->smb2.send_queue,
1495 req->out.vector_count);
1496 if (subreq == NULL) {
1497 return NT_STATUS_NO_MEMORY;
1499 tevent_req_set_callback(subreq, smbd_smb2_request_writev_done, req);
1501 * We're done with this request -
1502 * move it off the "being processed" queue.
1504 DLIST_REMOVE(req->sconn->smb2.requests, req);
1506 return NT_STATUS_OK;
1509 void smbd_smb2_request_dispatch_immediate(struct tevent_context *ctx,
1510 struct tevent_immediate *im,
1513 struct smbd_smb2_request *req = talloc_get_type_abort(private_data,
1514 struct smbd_smb2_request);
1515 struct smbd_server_connection *sconn = req->sconn;
1520 if (DEBUGLEVEL >= 10) {
1521 DEBUG(10,("smbd_smb2_request_dispatch_immediate: idx[%d] of %d vectors\n",
1522 req->current_idx, req->in.vector_count));
1523 print_req_vectors(req);
1526 status = smbd_smb2_request_dispatch(req);
1527 if (!NT_STATUS_IS_OK(status)) {
1528 smbd_server_connection_terminate(sconn, nt_errstr(status));
1533 static void smbd_smb2_request_writev_done(struct tevent_req *subreq)
1535 struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
1536 struct smbd_smb2_request);
1537 struct smbd_server_connection *sconn = req->sconn;
1541 ret = tstream_writev_queue_recv(subreq, &sys_errno);
1542 TALLOC_FREE(subreq);
1545 NTSTATUS status = map_nt_error_from_unix(sys_errno);
1546 DEBUG(2,("smbd_smb2_request_writev_done: client write error %s\n",
1547 nt_errstr(status)));
1548 smbd_server_connection_terminate(sconn, nt_errstr(status));
1553 NTSTATUS smbd_smb2_request_done_ex(struct smbd_smb2_request *req,
1555 DATA_BLOB body, DATA_BLOB *dyn,
1556 const char *location)
1559 int i = req->current_idx;
1560 uint32_t next_command_ofs;
1562 DEBUG(10,("smbd_smb2_request_done_ex: "
1563 "idx[%d] status[%s] body[%u] dyn[%s:%u] at %s\n",
1564 i, nt_errstr(status), (unsigned int)body.length,
1566 (unsigned int)(dyn ? dyn->length : 0),
1569 if (body.length < 2) {
1570 return smbd_smb2_request_error(req, NT_STATUS_INTERNAL_ERROR);
1573 if ((body.length % 2) != 0) {
1574 return smbd_smb2_request_error(req, NT_STATUS_INTERNAL_ERROR);
1577 outhdr = (uint8_t *)req->out.vector[i].iov_base;
1579 next_command_ofs = IVAL(outhdr, SMB2_HDR_NEXT_COMMAND);
1580 SIVAL(outhdr, SMB2_HDR_STATUS, NT_STATUS_V(status));
1582 req->out.vector[i+1].iov_base = (void *)body.data;
1583 req->out.vector[i+1].iov_len = body.length;
1586 req->out.vector[i+2].iov_base = (void *)dyn->data;
1587 req->out.vector[i+2].iov_len = dyn->length;
1589 req->out.vector[i+2].iov_base = NULL;
1590 req->out.vector[i+2].iov_len = 0;
1593 /* see if we need to recalculate the offset to the next response */
1594 if (next_command_ofs > 0) {
1595 next_command_ofs = SMB2_HDR_BODY;
1596 next_command_ofs += req->out.vector[i+1].iov_len;
1597 next_command_ofs += req->out.vector[i+2].iov_len;
1600 if ((next_command_ofs % 8) != 0) {
1601 size_t pad_size = 8 - (next_command_ofs % 8);
1602 if (req->out.vector[i+2].iov_len == 0) {
1604 * if the dyn buffer is empty
1605 * we can use it to add padding
1609 pad = talloc_zero_array(req->out.vector,
1612 return smbd_smb2_request_error(req,
1613 NT_STATUS_NO_MEMORY);
1616 req->out.vector[i+2].iov_base = (void *)pad;
1617 req->out.vector[i+2].iov_len = pad_size;
1620 * For now we copy the dynamic buffer
1621 * and add the padding to the new buffer
1628 old_size = req->out.vector[i+2].iov_len;
1629 old_dyn = (uint8_t *)req->out.vector[i+2].iov_base;
1631 new_size = old_size + pad_size;
1632 new_dyn = talloc_zero_array(req->out.vector,
1634 if (new_dyn == NULL) {
1635 return smbd_smb2_request_error(req,
1636 NT_STATUS_NO_MEMORY);
1639 memcpy(new_dyn, old_dyn, old_size);
1640 memset(new_dyn + old_size, 0, pad_size);
1642 req->out.vector[i+2].iov_base = (void *)new_dyn;
1643 req->out.vector[i+2].iov_len = new_size;
1645 next_command_ofs += pad_size;
1648 SIVAL(outhdr, SMB2_HDR_NEXT_COMMAND, next_command_ofs);
1650 return smbd_smb2_request_reply(req);
1653 NTSTATUS smbd_smb2_request_error_ex(struct smbd_smb2_request *req,
1656 const char *location)
1659 int i = req->current_idx;
1660 uint8_t *outhdr = (uint8_t *)req->out.vector[i].iov_base;
1662 DEBUG(10,("smbd_smb2_request_error_ex: idx[%d] status[%s] |%s| at %s\n",
1663 i, nt_errstr(status), info ? " +info" : "",
1666 body.data = outhdr + SMB2_HDR_BODY;
1668 SSVAL(body.data, 0, 9);
1671 SIVAL(body.data, 0x04, info->length);
1673 /* Allocated size of req->out.vector[i].iov_base
1674 * *MUST BE* OUTVEC_ALLOC_SIZE. So we have room for
1675 * 1 byte without having to do an alloc.
1677 info = talloc_zero_array(req->out.vector,
1681 return NT_STATUS_NO_MEMORY;
1683 info->data = ((uint8_t *)outhdr) +
1684 OUTVEC_ALLOC_SIZE - 1;
1686 SCVAL(info->data, 0, 0);
1690 * if a request fails, all other remaining
1691 * compounded requests should fail too
1693 req->next_status = NT_STATUS_INVALID_PARAMETER;
1695 return smbd_smb2_request_done_ex(req, status, body, info, __location__);
1699 struct smbd_smb2_send_oplock_break_state {
1700 struct smbd_server_connection *sconn;
1701 uint8_t buf[4 + SMB2_HDR_BODY + 0x18];
1702 struct iovec vector;
1705 static void smbd_smb2_oplock_break_writev_done(struct tevent_req *subreq);
1707 NTSTATUS smbd_smb2_send_oplock_break(struct smbd_server_connection *sconn,
1708 uint64_t file_id_persistent,
1709 uint64_t file_id_volatile,
1710 uint8_t oplock_level)
1712 struct smbd_smb2_send_oplock_break_state *state;
1713 struct tevent_req *subreq;
1717 state = talloc(sconn, struct smbd_smb2_send_oplock_break_state);
1718 if (state == NULL) {
1719 return NT_STATUS_NO_MEMORY;
1721 state->sconn = sconn;
1723 state->vector.iov_base = (void *)state->buf;
1724 state->vector.iov_len = sizeof(state->buf);
1726 _smb2_setlen(state->buf, sizeof(state->buf) - 4);
1727 hdr = state->buf + 4;
1728 body = hdr + SMB2_HDR_BODY;
1730 SIVAL(hdr, 0, SMB2_MAGIC);
1731 SSVAL(hdr, SMB2_HDR_LENGTH, SMB2_HDR_BODY);
1732 SSVAL(hdr, SMB2_HDR_EPOCH, 0);
1733 SIVAL(hdr, SMB2_HDR_STATUS, 0);
1734 SSVAL(hdr, SMB2_HDR_OPCODE, SMB2_OP_BREAK);
1735 SSVAL(hdr, SMB2_HDR_CREDIT, 0);
1736 SIVAL(hdr, SMB2_HDR_FLAGS, SMB2_HDR_FLAG_REDIRECT);
1737 SIVAL(hdr, SMB2_HDR_NEXT_COMMAND, 0);
1738 SBVAL(hdr, SMB2_HDR_MESSAGE_ID, UINT64_MAX);
1739 SIVAL(hdr, SMB2_HDR_PID, 0);
1740 SIVAL(hdr, SMB2_HDR_TID, 0);
1741 SBVAL(hdr, SMB2_HDR_SESSION_ID, 0);
1742 memset(hdr+SMB2_HDR_SIGNATURE, 0, 16);
1744 SSVAL(body, 0x00, 0x18);
1746 SCVAL(body, 0x02, oplock_level);
1747 SCVAL(body, 0x03, 0); /* reserved */
1748 SIVAL(body, 0x04, 0); /* reserved */
1749 SBVAL(body, 0x08, file_id_persistent);
1750 SBVAL(body, 0x10, file_id_volatile);
1752 subreq = tstream_writev_queue_send(state,
1753 sconn->smb2.event_ctx,
1755 sconn->smb2.send_queue,
1757 if (subreq == NULL) {
1758 return NT_STATUS_NO_MEMORY;
1760 tevent_req_set_callback(subreq,
1761 smbd_smb2_oplock_break_writev_done,
1764 return NT_STATUS_OK;
1767 static void smbd_smb2_oplock_break_writev_done(struct tevent_req *subreq)
1769 struct smbd_smb2_send_oplock_break_state *state =
1770 tevent_req_callback_data(subreq,
1771 struct smbd_smb2_send_oplock_break_state);
1772 struct smbd_server_connection *sconn = state->sconn;
1776 ret = tstream_writev_queue_recv(subreq, &sys_errno);
1777 TALLOC_FREE(subreq);
1779 NTSTATUS status = map_nt_error_from_unix(sys_errno);
1780 smbd_server_connection_terminate(sconn, nt_errstr(status));
1787 struct smbd_smb2_request_read_state {
1789 bool asked_for_header;
1790 struct smbd_smb2_request *smb2_req;
1793 static int smbd_smb2_request_next_vector(struct tstream_context *stream,
1795 TALLOC_CTX *mem_ctx,
1796 struct iovec **_vector,
1798 static void smbd_smb2_request_read_done(struct tevent_req *subreq);
1800 static struct tevent_req *smbd_smb2_request_read_send(TALLOC_CTX *mem_ctx,
1801 struct tevent_context *ev,
1802 struct smbd_server_connection *sconn)
1804 struct tevent_req *req;
1805 struct smbd_smb2_request_read_state *state;
1806 struct tevent_req *subreq;
1808 req = tevent_req_create(mem_ctx, &state,
1809 struct smbd_smb2_request_read_state);
1814 state->asked_for_header = false;
1816 state->smb2_req = smbd_smb2_request_allocate(state);
1817 if (tevent_req_nomem(state->smb2_req, req)) {
1818 return tevent_req_post(req, ev);
1820 state->smb2_req->sconn = sconn;
1822 subreq = tstream_readv_pdu_queue_send(state, ev, sconn->smb2.stream,
1823 sconn->smb2.recv_queue,
1824 smbd_smb2_request_next_vector,
1826 if (tevent_req_nomem(subreq, req)) {
1827 return tevent_req_post(req, ev);
1829 tevent_req_set_callback(subreq, smbd_smb2_request_read_done, req);
1834 static int smbd_smb2_request_next_vector(struct tstream_context *stream,
1836 TALLOC_CTX *mem_ctx,
1837 struct iovec **_vector,
1840 struct smbd_smb2_request_read_state *state =
1841 talloc_get_type_abort(private_data,
1842 struct smbd_smb2_request_read_state);
1843 struct smbd_smb2_request *req = state->smb2_req;
1844 struct iovec *vector;
1845 int idx = req->in.vector_count;
1847 uint8_t *buf = NULL;
1849 if (req->in.vector_count == 0) {
1851 * first we need to get the NBT header
1853 req->in.vector = talloc_array(req, struct iovec,
1854 req->in.vector_count + 1);
1855 if (req->in.vector == NULL) {
1858 req->in.vector_count += 1;
1860 req->in.vector[idx].iov_base = (void *)req->in.nbt_hdr;
1861 req->in.vector[idx].iov_len = 4;
1863 vector = talloc_array(mem_ctx, struct iovec, 1);
1864 if (vector == NULL) {
1868 vector[0] = req->in.vector[idx];
1875 if (req->in.vector_count == 1) {
1877 * Now we analyze the NBT header
1879 state->missing = smb2_len(req->in.vector[0].iov_base);
1881 if (state->missing == 0) {
1882 /* if there're no remaining bytes, we're done */
1888 req->in.vector = talloc_realloc(req, req->in.vector,
1890 req->in.vector_count + 1);
1891 if (req->in.vector == NULL) {
1894 req->in.vector_count += 1;
1896 if (CVAL(req->in.vector[0].iov_base, 0) != 0) {
1898 * it's a special NBT message,
1899 * so get all remaining bytes
1901 len = state->missing;
1902 } else if (state->missing < (SMB2_HDR_BODY + 2)) {
1904 * it's an invalid message, just read what we can get
1905 * and let the caller handle the error
1907 len = state->missing;
1910 * We assume it's a SMB2 request,
1911 * and we first get the header and the
1912 * first 2 bytes (the struct size) of the body
1914 len = SMB2_HDR_BODY + 2;
1916 state->asked_for_header = true;
1919 state->missing -= len;
1921 buf = talloc_array(req->in.vector, uint8_t, len);
1926 req->in.vector[idx].iov_base = (void *)buf;
1927 req->in.vector[idx].iov_len = len;
1929 vector = talloc_array(mem_ctx, struct iovec, 1);
1930 if (vector == NULL) {
1934 vector[0] = req->in.vector[idx];
1941 if (state->missing == 0) {
1942 /* if there're no remaining bytes, we're done */
1948 if (state->asked_for_header) {
1951 size_t next_command_ofs;
1956 bool invalid = false;
1958 state->asked_for_header = false;
1961 * We got the SMB2 header and the first 2 bytes
1962 * of the body. We fix the size to just the header
1963 * and manually copy the 2 first bytes to the body section
1965 req->in.vector[idx-1].iov_len = SMB2_HDR_BODY;
1966 hdr = (const uint8_t *)req->in.vector[idx-1].iov_base;
1968 /* allocate vectors for body and dynamic areas */
1969 req->in.vector = talloc_realloc(req, req->in.vector,
1971 req->in.vector_count + 2);
1972 if (req->in.vector == NULL) {
1975 req->in.vector_count += 2;
1977 full_size = state->missing + SMB2_HDR_BODY + 2;
1978 next_command_ofs = IVAL(hdr, SMB2_HDR_NEXT_COMMAND);
1979 body_size = SVAL(hdr, SMB2_HDR_BODY);
1981 if (next_command_ofs != 0) {
1982 if (next_command_ofs < (SMB2_HDR_BODY + 2)) {
1984 * this is invalid, just return a zero
1985 * body and let the caller deal with the error
1988 } else if (next_command_ofs > full_size) {
1990 * this is invalid, just return a zero
1991 * body and let the caller deal with the error
1995 full_size = next_command_ofs;
2000 if (body_size < 2) {
2002 * this is invalid, just return a zero
2003 * body and let the caller deal with the error
2008 if ((body_size % 2) != 0) {
2012 if (body_size > (full_size - SMB2_HDR_BODY)) {
2014 * this is invalid, just return a zero
2015 * body and let the caller deal with the error
2022 /* the caller should check this */
2026 dyn_size = full_size - (SMB2_HDR_BODY + body_size);
2028 state->missing -= (body_size - 2) + dyn_size;
2030 body = talloc_array(req->in.vector, uint8_t, body_size);
2035 dyn = talloc_array(req->in.vector, uint8_t, dyn_size);
2040 req->in.vector[idx].iov_base = (void *)body;
2041 req->in.vector[idx].iov_len = body_size;
2042 req->in.vector[idx+1].iov_base = (void *)dyn;
2043 req->in.vector[idx+1].iov_len = dyn_size;
2045 vector = talloc_array(mem_ctx, struct iovec, 2);
2046 if (vector == NULL) {
2051 * the first 2 bytes of the body were already fetched
2052 * together with the header
2054 memcpy(body, hdr + SMB2_HDR_BODY, 2);
2055 vector[0].iov_base = body + 2;
2056 vector[0].iov_len = body_size - 2;
2058 vector[1] = req->in.vector[idx+1];
2066 * when we endup here, we're looking for a new SMB2 request
2067 * next. And we ask for its header and the first 2 bytes of
2068 * the body (like we did for the first SMB2 request).
2071 req->in.vector = talloc_realloc(req, req->in.vector,
2073 req->in.vector_count + 1);
2074 if (req->in.vector == NULL) {
2077 req->in.vector_count += 1;
2080 * We assume it's a SMB2 request,
2081 * and we first get the header and the
2082 * first 2 bytes (the struct size) of the body
2084 len = SMB2_HDR_BODY + 2;
2086 if (len > state->missing) {
2087 /* let the caller handle the error */
2088 len = state->missing;
2091 state->missing -= len;
2092 state->asked_for_header = true;
2094 buf = talloc_array(req->in.vector, uint8_t, len);
2099 req->in.vector[idx].iov_base = (void *)buf;
2100 req->in.vector[idx].iov_len = len;
2102 vector = talloc_array(mem_ctx, struct iovec, 1);
2103 if (vector == NULL) {
2107 vector[0] = req->in.vector[idx];
2114 static void smbd_smb2_request_read_done(struct tevent_req *subreq)
2116 struct tevent_req *req =
2117 tevent_req_callback_data(subreq,
2123 ret = tstream_readv_pdu_queue_recv(subreq, &sys_errno);
2125 status = map_nt_error_from_unix(sys_errno);
2126 tevent_req_nterror(req, status);
2130 tevent_req_done(req);
2133 static NTSTATUS smbd_smb2_request_read_recv(struct tevent_req *req,
2134 TALLOC_CTX *mem_ctx,
2135 struct smbd_smb2_request **_smb2_req)
2137 struct smbd_smb2_request_read_state *state =
2138 tevent_req_data(req,
2139 struct smbd_smb2_request_read_state);
2142 if (tevent_req_is_nterror(req, &status)) {
2143 tevent_req_received(req);
2147 talloc_steal(mem_ctx, state->smb2_req->mem_pool);
2148 *_smb2_req = state->smb2_req;
2149 tevent_req_received(req);
2150 return NT_STATUS_OK;
2153 static void smbd_smb2_request_incoming(struct tevent_req *subreq);
2155 void smbd_smb2_first_negprot(struct smbd_server_connection *sconn,
2156 const uint8_t *inbuf, size_t size)
2159 struct smbd_smb2_request *req = NULL;
2160 struct tevent_req *subreq;
2162 if (lp_security() == SEC_SHARE) {
2163 DEBUG(2,("WARNING!!: \"security = share\" is deprecated for "
2164 "SMB2 servers. Mapping to \"security = user\" and "
2165 "\"map to guest = Bad User\"\n" ));
2166 lp_do_parameter(-1, "security", "user");
2167 lp_do_parameter(-1, "map to guest", "Bad User");
2170 DEBUG(10,("smbd_smb2_first_negprot: packet length %u\n",
2171 (unsigned int)size));
2173 status = smbd_initialize_smb2(sconn);
2174 if (!NT_STATUS_IS_OK(status)) {
2175 smbd_server_connection_terminate(sconn, nt_errstr(status));
2179 status = smbd_smb2_request_create(sconn, inbuf, size, &req);
2180 if (!NT_STATUS_IS_OK(status)) {
2181 smbd_server_connection_terminate(sconn, nt_errstr(status));
2185 status = smbd_smb2_request_setup_out(req);
2186 if (!NT_STATUS_IS_OK(status)) {
2187 smbd_server_connection_terminate(sconn, nt_errstr(status));
2191 status = smbd_smb2_request_dispatch(req);
2192 if (!NT_STATUS_IS_OK(status)) {
2193 smbd_server_connection_terminate(sconn, nt_errstr(status));
2197 /* ask for the next request */
2198 subreq = smbd_smb2_request_read_send(sconn, sconn->smb2.event_ctx, sconn);
2199 if (subreq == NULL) {
2200 smbd_server_connection_terminate(sconn, "no memory for reading");
2203 tevent_req_set_callback(subreq, smbd_smb2_request_incoming, sconn);
2206 static void smbd_smb2_request_incoming(struct tevent_req *subreq)
2208 struct smbd_server_connection *sconn = tevent_req_callback_data(subreq,
2209 struct smbd_server_connection);
2211 struct smbd_smb2_request *req = NULL;
2213 status = smbd_smb2_request_read_recv(subreq, sconn, &req);
2214 TALLOC_FREE(subreq);
2215 if (!NT_STATUS_IS_OK(status)) {
2216 DEBUG(2,("smbd_smb2_request_incoming: client read error %s\n",
2217 nt_errstr(status)));
2218 smbd_server_connection_terminate(sconn, nt_errstr(status));
2222 if (req->in.nbt_hdr[0] != 0x00) {
2223 DEBUG(1,("smbd_smb2_request_incoming: ignore NBT[0x%02X] msg\n",
2224 req->in.nbt_hdr[0]));
2229 req->current_idx = 1;
2231 DEBUG(10,("smbd_smb2_request_incoming: idx[%d] of %d vectors\n",
2232 req->current_idx, req->in.vector_count));
2234 status = smbd_smb2_request_validate(req);
2235 if (!NT_STATUS_IS_OK(status)) {
2236 smbd_server_connection_terminate(sconn, nt_errstr(status));
2240 status = smbd_smb2_request_setup_out(req);
2241 if (!NT_STATUS_IS_OK(status)) {
2242 smbd_server_connection_terminate(sconn, nt_errstr(status));
2246 status = smbd_smb2_request_dispatch(req);
2247 if (!NT_STATUS_IS_OK(status)) {
2248 smbd_server_connection_terminate(sconn, nt_errstr(status));
2253 /* ask for the next request (this constructs the main loop) */
2254 subreq = smbd_smb2_request_read_send(sconn, sconn->smb2.event_ctx, sconn);
2255 if (subreq == NULL) {
2256 smbd_server_connection_terminate(sconn, "no memory for reading");
2259 tevent_req_set_callback(subreq, smbd_smb2_request_incoming, sconn);