2 Unix SMB/CIFS implementation.
3 Connect to 445 and 139/nbsesssetup
4 Copyright (C) Volker Lendecke 2010
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
21 #include "../lib/async_req/async_sock.h"
22 #include "../lib/util/tevent_ntstatus.h"
23 #include "../lib/util/tevent_unix.h"
25 #include "async_smb.h"
26 #include "../libcli/smb/read_smb.h"
27 #include "libsmb/nmblib.h"
29 struct cli_session_request_state {
30 struct tevent_context *ev;
34 uint8_t nb_session_response;
37 static void cli_session_request_sent(struct tevent_req *subreq);
38 static void cli_session_request_recvd(struct tevent_req *subreq);
40 static struct tevent_req *cli_session_request_send(TALLOC_CTX *mem_ctx,
41 struct tevent_context *ev,
43 const struct nmb_name *called,
44 const struct nmb_name *calling)
46 struct tevent_req *req, *subreq;
47 struct cli_session_request_state *state;
49 req = tevent_req_create(mem_ctx, &state,
50 struct cli_session_request_state);
57 state->iov[1].iov_base = name_mangle(
58 state, called->name, called->name_type);
59 if (tevent_req_nomem(state->iov[1].iov_base, req)) {
60 return tevent_req_post(req, ev);
62 state->iov[1].iov_len = name_len(
63 (unsigned char *)state->iov[1].iov_base,
64 talloc_get_size(state->iov[1].iov_base));
66 state->iov[2].iov_base = name_mangle(
67 state, calling->name, calling->name_type);
68 if (tevent_req_nomem(state->iov[2].iov_base, req)) {
69 return tevent_req_post(req, ev);
71 state->iov[2].iov_len = name_len(
72 (unsigned char *)state->iov[2].iov_base,
73 talloc_get_size(state->iov[2].iov_base));
75 _smb_setlen(((char *)&state->len_hdr),
76 state->iov[1].iov_len + state->iov[2].iov_len);
77 SCVAL((char *)&state->len_hdr, 0, 0x81);
79 state->iov[0].iov_base = &state->len_hdr;
80 state->iov[0].iov_len = sizeof(state->len_hdr);
82 subreq = writev_send(state, ev, NULL, sock, true, state->iov, 3);
83 if (tevent_req_nomem(subreq, req)) {
84 return tevent_req_post(req, ev);
86 tevent_req_set_callback(subreq, cli_session_request_sent, req);
90 static void cli_session_request_sent(struct tevent_req *subreq)
92 struct tevent_req *req = tevent_req_callback_data(
93 subreq, struct tevent_req);
94 struct cli_session_request_state *state = tevent_req_data(
95 req, struct cli_session_request_state);
99 ret = writev_recv(subreq, &err);
102 tevent_req_error(req, err);
105 subreq = read_smb_send(state, state->ev, state->sock);
106 if (tevent_req_nomem(subreq, req)) {
109 tevent_req_set_callback(subreq, cli_session_request_recvd, req);
112 static void cli_session_request_recvd(struct tevent_req *subreq)
114 struct tevent_req *req = tevent_req_callback_data(
115 subreq, struct tevent_req);
116 struct cli_session_request_state *state = tevent_req_data(
117 req, struct cli_session_request_state);
122 ret = read_smb_recv(subreq, talloc_tos(), &buf, &err);
130 tevent_req_error(req, err);
134 * In case of an error there is more information in the data
135 * portion according to RFC1002. We're not subtle enough to
136 * respond to the different error conditions, so drop the
139 state->nb_session_response = CVAL(buf, 0);
140 tevent_req_done(req);
143 static bool cli_session_request_recv(struct tevent_req *req, int *err, uint8_t *resp)
145 struct cli_session_request_state *state = tevent_req_data(
146 req, struct cli_session_request_state);
148 if (tevent_req_is_unix_error(req, err)) {
151 *resp = state->nb_session_response;
155 struct nb_connect_state {
156 struct tevent_context *ev;
157 const struct sockaddr_storage *addr;
158 const char *called_name;
161 struct nmb_name called;
162 struct nmb_name calling;
165 static int nb_connect_state_destructor(struct nb_connect_state *state);
166 static void nb_connect_connected(struct tevent_req *subreq);
167 static void nb_connect_done(struct tevent_req *subreq);
169 static struct tevent_req *nb_connect_send(TALLOC_CTX *mem_ctx,
170 struct tevent_context *ev,
171 const struct sockaddr_storage *addr,
172 const char *called_name,
174 const char *calling_name,
177 struct tevent_req *req, *subreq;
178 struct nb_connect_state *state;
180 req = tevent_req_create(mem_ctx, &state, struct nb_connect_state);
185 state->called_name = called_name;
189 make_nmb_name(&state->called, called_name, called_type);
190 make_nmb_name(&state->calling, calling_name, calling_type);
192 talloc_set_destructor(state, nb_connect_state_destructor);
194 subreq = open_socket_out_send(state, ev, addr, 139, 5000);
195 if (tevent_req_nomem(subreq, req)) {
196 return tevent_req_post(req, ev);
198 tevent_req_set_callback(subreq, nb_connect_connected, req);
202 static int nb_connect_state_destructor(struct nb_connect_state *state)
204 if (state->sock != -1) {
210 static void nb_connect_connected(struct tevent_req *subreq)
212 struct tevent_req *req = tevent_req_callback_data(
213 subreq, struct tevent_req);
214 struct nb_connect_state *state = tevent_req_data(
215 req, struct nb_connect_state);
218 status = open_socket_out_recv(subreq, &state->sock);
220 if (!NT_STATUS_IS_OK(status)) {
221 tevent_req_nterror(req, status);
224 subreq = cli_session_request_send(state, state->ev, state->sock,
225 &state->called, &state->calling);
226 if (tevent_req_nomem(subreq, req)) {
229 tevent_req_set_callback(subreq, nb_connect_done, req);
232 static void nb_connect_done(struct tevent_req *subreq)
234 struct tevent_req *req = tevent_req_callback_data(
235 subreq, struct tevent_req);
236 struct nb_connect_state *state = tevent_req_data(
237 req, struct nb_connect_state);
242 ret = cli_session_request_recv(subreq, &err, &resp);
245 tevent_req_nterror(req, map_nt_error_from_unix(err));
250 * RFC1002: 0x82 - POSITIVE SESSION RESPONSE
255 * The server did not like our session request
260 if (strequal(state->called_name, "*SMBSERVER")) {
262 * Here we could try a name status request and
263 * use the first 0x20 type name.
266 req, NT_STATUS_RESOURCE_NAME_NOT_FOUND);
271 * We could be subtle and distinguish between
272 * different failure modes, but what we do here
273 * instead is just retry with *SMBSERVER type 0x20.
275 state->called_name = "*SMBSERVER";
276 make_nmb_name(&state->called, state->called_name, 0x20);
278 subreq = open_socket_out_send(state, state->ev, state->addr,
280 if (tevent_req_nomem(subreq, req)) {
283 tevent_req_set_callback(subreq, nb_connect_connected, req);
287 tevent_req_done(req);
292 static NTSTATUS nb_connect_recv(struct tevent_req *req, int *sock)
294 struct nb_connect_state *state = tevent_req_data(
295 req, struct nb_connect_state);
298 if (tevent_req_is_nterror(req, &status)) {
306 struct smbsock_connect_state {
307 struct tevent_context *ev;
308 const struct sockaddr_storage *addr;
309 const char *called_name;
311 const char *calling_name;
312 uint8_t calling_type;
313 struct tevent_req *req_139;
314 struct tevent_req *req_445;
319 static int smbsock_connect_state_destructor(
320 struct smbsock_connect_state *state);
321 static void smbsock_connect_connected(struct tevent_req *subreq);
322 static void smbsock_connect_do_139(struct tevent_req *subreq);
324 struct tevent_req *smbsock_connect_send(TALLOC_CTX *mem_ctx,
325 struct tevent_context *ev,
326 const struct sockaddr_storage *addr,
328 const char *called_name,
330 const char *calling_name,
333 struct tevent_req *req, *subreq;
334 struct smbsock_connect_state *state;
336 req = tevent_req_create(mem_ctx, &state, struct smbsock_connect_state);
344 (called_name != NULL) ? called_name : "*SMBSERVER";
346 (called_type != -1) ? called_type : 0x20;
347 state->calling_name =
348 (calling_name != NULL) ? calling_name : lp_netbios_name();
349 state->calling_type =
350 (calling_type != -1) ? calling_type : 0x00;
352 talloc_set_destructor(state, smbsock_connect_state_destructor);
355 subreq = tevent_wakeup_send(state, ev, timeval_set(0, 0));
356 if (tevent_req_nomem(subreq, req)) {
357 return tevent_req_post(req, ev);
359 tevent_req_set_callback(subreq, smbsock_connect_do_139, req);
363 state->req_445 = open_socket_out_send(state, ev, addr, port,
365 if (tevent_req_nomem(state->req_445, req)) {
366 return tevent_req_post(req, ev);
368 tevent_req_set_callback(
369 state->req_445, smbsock_connect_connected, req);
377 state->req_445 = open_socket_out_send(state, ev, addr, 445, 5000);
378 if (tevent_req_nomem(state->req_445, req)) {
379 return tevent_req_post(req, ev);
381 tevent_req_set_callback(state->req_445, smbsock_connect_connected,
385 * After 5 msecs, fire the 139 request
387 state->req_139 = tevent_wakeup_send(
388 state, ev, timeval_current_ofs(0, 5000));
389 if (tevent_req_nomem(state->req_139, req)) {
390 TALLOC_FREE(state->req_445);
391 return tevent_req_post(req, ev);
393 tevent_req_set_callback(state->req_139, smbsock_connect_do_139,
398 static int smbsock_connect_state_destructor(
399 struct smbsock_connect_state *state)
401 if (state->sock != -1) {
408 static void smbsock_connect_do_139(struct tevent_req *subreq)
410 struct tevent_req *req = tevent_req_callback_data(
411 subreq, struct tevent_req);
412 struct smbsock_connect_state *state = tevent_req_data(
413 req, struct smbsock_connect_state);
416 ret = tevent_wakeup_recv(subreq);
419 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
422 state->req_139 = nb_connect_send(state, state->ev, state->addr,
426 state->calling_type);
427 if (tevent_req_nomem(state->req_139, req)) {
430 tevent_req_set_callback(state->req_139, smbsock_connect_connected,
434 static void smbsock_connect_connected(struct tevent_req *subreq)
436 struct tevent_req *req = tevent_req_callback_data(
437 subreq, struct tevent_req);
438 struct smbsock_connect_state *state = tevent_req_data(
439 req, struct smbsock_connect_state);
440 struct tevent_req *unfinished_req;
443 if (subreq == state->req_445) {
445 status = open_socket_out_recv(subreq, &state->sock);
446 TALLOC_FREE(state->req_445);
447 unfinished_req = state->req_139;
450 } else if (subreq == state->req_139) {
452 status = nb_connect_recv(subreq, &state->sock);
453 TALLOC_FREE(state->req_139);
454 unfinished_req = state->req_445;
458 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
462 if (NT_STATUS_IS_OK(status)) {
463 TALLOC_FREE(unfinished_req);
464 state->req_139 = NULL;
465 state->req_445 = NULL;
466 tevent_req_done(req);
469 if (unfinished_req == NULL) {
471 * Both requests failed
473 tevent_req_nterror(req, status);
477 * Do nothing, wait for the second request to come here.
481 NTSTATUS smbsock_connect_recv(struct tevent_req *req, int *sock,
484 struct smbsock_connect_state *state = tevent_req_data(
485 req, struct smbsock_connect_state);
488 if (tevent_req_is_nterror(req, &status)) {
493 if (ret_port != NULL) {
494 *ret_port = state->port;
499 NTSTATUS smbsock_connect(const struct sockaddr_storage *addr, uint16_t port,
500 const char *called_name, int called_type,
501 const char *calling_name, int calling_type,
502 int *pfd, uint16_t *ret_port, int sec_timeout)
504 TALLOC_CTX *frame = talloc_stackframe();
505 struct tevent_context *ev;
506 struct tevent_req *req;
507 NTSTATUS status = NT_STATUS_NO_MEMORY;
509 ev = tevent_context_init(frame);
513 req = smbsock_connect_send(frame, ev, addr, port,
514 called_name, called_type,
515 calling_name, calling_type);
519 if ((sec_timeout != 0) &&
520 !tevent_req_set_endtime(
521 req, ev, timeval_current_ofs(sec_timeout, 0))) {
524 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
527 status = smbsock_connect_recv(req, pfd, ret_port);
533 struct smbsock_any_connect_state {
534 struct tevent_context *ev;
535 const struct sockaddr_storage *addrs;
536 const char **called_names;
538 const char **calling_names;
543 struct tevent_req **requests;
548 uint16_t chosen_port;
552 static bool smbsock_any_connect_send_next(
553 struct tevent_req *req, struct smbsock_any_connect_state *state);
554 static void smbsock_any_connect_trynext(struct tevent_req *subreq);
555 static void smbsock_any_connect_connected(struct tevent_req *subreq);
557 struct tevent_req *smbsock_any_connect_send(TALLOC_CTX *mem_ctx,
558 struct tevent_context *ev,
559 const struct sockaddr_storage *addrs,
560 const char **called_names,
562 const char **calling_names,
564 size_t num_addrs, uint16_t port)
566 struct tevent_req *req, *subreq;
567 struct smbsock_any_connect_state *state;
569 req = tevent_req_create(mem_ctx, &state,
570 struct smbsock_any_connect_state);
575 state->addrs = addrs;
576 state->num_addrs = num_addrs;
577 state->called_names = called_names;
578 state->called_types = called_types;
579 state->calling_names = calling_names;
580 state->calling_types = calling_types;
583 if (num_addrs == 0) {
584 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
585 return tevent_req_post(req, ev);
588 state->requests = talloc_zero_array(state, struct tevent_req *,
590 if (tevent_req_nomem(state->requests, req)) {
591 return tevent_req_post(req, ev);
593 if (!smbsock_any_connect_send_next(req, state)) {
594 return tevent_req_post(req, ev);
596 if (state->num_sent >= state->num_addrs) {
599 subreq = tevent_wakeup_send(state, ev, timeval_current_ofs(0, 10000));
600 if (tevent_req_nomem(subreq, req)) {
601 return tevent_req_post(req, ev);
603 tevent_req_set_callback(subreq, smbsock_any_connect_trynext, req);
607 static void smbsock_any_connect_trynext(struct tevent_req *subreq)
609 struct tevent_req *req = tevent_req_callback_data(
610 subreq, struct tevent_req);
611 struct smbsock_any_connect_state *state = tevent_req_data(
612 req, struct smbsock_any_connect_state);
615 ret = tevent_wakeup_recv(subreq);
618 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
621 if (!smbsock_any_connect_send_next(req, state)) {
624 if (state->num_sent >= state->num_addrs) {
627 subreq = tevent_wakeup_send(state, state->ev,
628 tevent_timeval_set(0, 10000));
629 if (tevent_req_nomem(subreq, req)) {
632 tevent_req_set_callback(subreq, smbsock_any_connect_trynext, req);
635 static bool smbsock_any_connect_send_next(
636 struct tevent_req *req, struct smbsock_any_connect_state *state)
638 struct tevent_req *subreq;
640 if (state->num_sent >= state->num_addrs) {
641 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
644 subreq = smbsock_connect_send(
645 state->requests, state->ev, &state->addrs[state->num_sent],
647 (state->called_names != NULL)
648 ? state->called_names[state->num_sent] : NULL,
649 (state->called_types != NULL)
650 ? state->called_types[state->num_sent] : -1,
651 (state->calling_names != NULL)
652 ? state->calling_names[state->num_sent] : NULL,
653 (state->calling_types != NULL)
654 ? state->calling_types[state->num_sent] : -1);
655 if (tevent_req_nomem(subreq, req)) {
658 tevent_req_set_callback(subreq, smbsock_any_connect_connected, req);
660 state->requests[state->num_sent] = subreq;
661 state->num_sent += 1;
666 static void smbsock_any_connect_connected(struct tevent_req *subreq)
668 struct tevent_req *req = tevent_req_callback_data(
669 subreq, struct tevent_req);
670 struct smbsock_any_connect_state *state = tevent_req_data(
671 req, struct smbsock_any_connect_state);
674 uint16_t chosen_port;
676 size_t chosen_index = 0;
678 for (i=0; i<state->num_sent; i++) {
679 if (state->requests[i] == subreq) {
684 if (i == state->num_sent) {
685 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
689 status = smbsock_connect_recv(subreq, &fd, &chosen_port);
692 state->requests[chosen_index] = NULL;
694 if (NT_STATUS_IS_OK(status)) {
696 * This will kill all the other requests
698 TALLOC_FREE(state->requests);
700 state->chosen_port = chosen_port;
701 state->chosen_index = chosen_index;
702 tevent_req_done(req);
706 state->num_received += 1;
707 if (state->num_received < state->num_addrs) {
709 * More addrs pending, wait for the others
715 * This is the last response, none succeeded.
717 tevent_req_nterror(req, status);
721 NTSTATUS smbsock_any_connect_recv(struct tevent_req *req, int *pfd,
722 size_t *chosen_index,
723 uint16_t *chosen_port)
725 struct smbsock_any_connect_state *state = tevent_req_data(
726 req, struct smbsock_any_connect_state);
729 if (tevent_req_is_nterror(req, &status)) {
733 if (chosen_index != NULL) {
734 *chosen_index = state->chosen_index;
736 if (chosen_port != NULL) {
737 *chosen_port = state->chosen_port;
742 NTSTATUS smbsock_any_connect(const struct sockaddr_storage *addrs,
743 const char **called_names,
745 const char **calling_names,
750 int *pfd, size_t *chosen_index,
751 uint16_t *chosen_port)
753 TALLOC_CTX *frame = talloc_stackframe();
754 struct tevent_context *ev;
755 struct tevent_req *req;
756 NTSTATUS status = NT_STATUS_NO_MEMORY;
758 ev = tevent_context_init(frame);
762 req = smbsock_any_connect_send(frame, ev, addrs,
763 called_names, called_types,
764 calling_names, calling_types,
769 if ((sec_timeout != 0) &&
770 !tevent_req_set_endtime(
771 req, ev, timeval_current_ofs(sec_timeout, 0))) {
774 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
777 status = smbsock_any_connect_recv(req, pfd, chosen_index, chosen_port);