2 Unix SMB/CIFS implementation.
3 Infrastructure for async SMB client requests
4 Copyright (C) Volker Lendecke 2008
5 Copyright (C) Stefan Metzmacher 2011
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 "system/network.h"
23 #include "../lib/async_req/async_sock.h"
24 #include "../lib/util/tevent_ntstatus.h"
25 #include "../lib/util/tevent_unix.h"
26 #include "lib/util/util_net.h"
27 #include "lib/util/dlinklist.h"
28 #include "../libcli/smb/smb_common.h"
29 #include "../libcli/smb/smb_seal.h"
30 #include "../libcli/smb/smb_signing.h"
31 #include "../libcli/smb/read_smb.h"
32 #include "smbXcli_base.h"
33 #include "librpc/ndr/libndr.h"
37 struct smbXcli_session;
43 struct sockaddr_storage local_ss;
44 struct sockaddr_storage remote_ss;
45 const char *remote_name;
47 struct tevent_queue *outgoing;
48 struct tevent_req **pending;
49 struct tevent_req *read_smb_req;
51 enum protocol_types protocol;
54 bool mandatory_signing;
57 * The incoming dispatch function should return:
58 * - NT_STATUS_RETRY, if more incoming PDUs are expected.
59 * - NT_STATUS_OK, if no more processing is desired, e.g.
60 * the dispatch function called
62 * - All other return values disconnect the connection.
64 NTSTATUS (*dispatch_incoming)(struct smbXcli_conn *conn,
70 uint32_t capabilities;
75 uint32_t capabilities;
78 uint16_t security_mode;
87 const char *workgroup;
93 uint32_t capabilities;
98 struct smb_signing_state *signing;
99 struct smb_trans_enc_state *trans_enc;
101 struct tevent_req *read_braw_req;
106 uint32_t capabilities;
107 uint16_t security_mode;
112 uint32_t capabilities;
113 uint16_t security_mode;
115 uint32_t max_trans_size;
116 uint32_t max_read_size;
117 uint32_t max_write_size;
124 uint16_t cur_credits;
125 uint16_t max_credits;
128 struct smbXcli_session *sessions;
131 struct smb2cli_session {
133 uint16_t session_flags;
134 DATA_BLOB application_key;
135 DATA_BLOB signing_key;
138 DATA_BLOB encryption_key;
139 DATA_BLOB decryption_key;
142 uint16_t channel_sequence;
145 struct smbXcli_session {
146 struct smbXcli_session *prev, *next;
147 struct smbXcli_conn *conn;
151 DATA_BLOB application_key;
155 struct smb2cli_session *smb2;
158 DATA_BLOB signing_key;
162 * this should be a short term hack
163 * until the upper layers have implemented
166 bool disconnect_expired;
169 struct smbXcli_tcon {
172 uint16_t optional_support;
173 uint32_t maximal_access;
174 uint32_t guest_maximal_access;
183 uint32_t capabilities;
184 uint32_t maximal_access;
189 struct smbXcli_req_state {
190 struct tevent_context *ev;
191 struct smbXcli_conn *conn;
192 struct smbXcli_session *session; /* maybe NULL */
193 struct smbXcli_tcon *tcon; /* maybe NULL */
195 uint8_t length_hdr[4];
202 /* Space for the header including the wct */
203 uint8_t hdr[HDR_VWV];
206 * For normal requests, smb1cli_req_send chooses a mid.
207 * SecondaryV trans requests need to use the mid of the primary
208 * request, so we need a place to store it.
209 * Assume it is set if != 0.
214 uint8_t bytecount_buf[2];
216 #define MAX_SMB_IOV 10
217 /* length_hdr, hdr, words, byte_count, buffers */
218 struct iovec iov[1 + 3 + MAX_SMB_IOV];
223 struct tevent_req **chained_requests;
226 NTSTATUS recv_status;
227 /* always an array of 3 talloc elements */
228 struct iovec *recv_iov;
232 const uint8_t *fixed;
237 uint8_t transform[SMB2_TF_HDR_SIZE];
238 uint8_t hdr[SMB2_HDR_BODY];
239 uint8_t pad[7]; /* padding space for compounding */
242 * always an array of 3 talloc elements
243 * (without a SMB2_TRANSFORM header!)
247 struct iovec *recv_iov;
250 * the expected max for the response dyn_len
252 uint32_t max_dyn_len;
254 uint16_t credit_charge;
258 uint64_t encryption_session_id;
260 bool signing_skipped;
266 static int smbXcli_conn_destructor(struct smbXcli_conn *conn)
269 * NT_STATUS_OK, means we do not notify the callers
271 smbXcli_conn_disconnect(conn, NT_STATUS_OK);
273 while (conn->sessions) {
274 conn->sessions->conn = NULL;
275 DLIST_REMOVE(conn->sessions, conn->sessions);
278 if (conn->smb1.trans_enc) {
279 TALLOC_FREE(conn->smb1.trans_enc);
285 struct smbXcli_conn *smbXcli_conn_create(TALLOC_CTX *mem_ctx,
287 const char *remote_name,
288 enum smb_signing_setting signing_state,
289 uint32_t smb1_capabilities,
290 struct GUID *client_guid,
291 uint32_t smb2_capabilities)
293 struct smbXcli_conn *conn = NULL;
295 struct sockaddr *sa = NULL;
299 conn = talloc_zero(mem_ctx, struct smbXcli_conn);
305 conn->write_fd = dup(fd);
306 if (conn->write_fd == -1) {
310 conn->remote_name = talloc_strdup(conn, remote_name);
311 if (conn->remote_name == NULL) {
316 ss = (void *)&conn->local_ss;
317 sa = (struct sockaddr *)ss;
318 sa_length = sizeof(conn->local_ss);
319 ret = getsockname(fd, sa, &sa_length);
323 ss = (void *)&conn->remote_ss;
324 sa = (struct sockaddr *)ss;
325 sa_length = sizeof(conn->remote_ss);
326 ret = getpeername(fd, sa, &sa_length);
331 conn->outgoing = tevent_queue_create(conn, "smbXcli_outgoing");
332 if (conn->outgoing == NULL) {
335 conn->pending = NULL;
337 conn->protocol = PROTOCOL_NONE;
339 switch (signing_state) {
340 case SMB_SIGNING_OFF:
342 conn->allow_signing = false;
343 conn->desire_signing = false;
344 conn->mandatory_signing = false;
346 case SMB_SIGNING_DEFAULT:
347 case SMB_SIGNING_IF_REQUIRED:
348 /* if the server requires it */
349 conn->allow_signing = true;
350 conn->desire_signing = false;
351 conn->mandatory_signing = false;
353 case SMB_SIGNING_REQUIRED:
355 conn->allow_signing = true;
356 conn->desire_signing = true;
357 conn->mandatory_signing = true;
361 conn->smb1.client.capabilities = smb1_capabilities;
362 conn->smb1.client.max_xmit = UINT16_MAX;
364 conn->smb1.capabilities = conn->smb1.client.capabilities;
365 conn->smb1.max_xmit = 1024;
369 /* initialise signing */
370 conn->smb1.signing = smb_signing_init(conn,
372 conn->desire_signing,
373 conn->mandatory_signing);
374 if (!conn->smb1.signing) {
378 conn->smb2.client.security_mode = SMB2_NEGOTIATE_SIGNING_ENABLED;
379 if (conn->mandatory_signing) {
380 conn->smb2.client.security_mode |= SMB2_NEGOTIATE_SIGNING_REQUIRED;
383 conn->smb2.client.guid = *client_guid;
385 conn->smb2.client.capabilities = smb2_capabilities;
387 conn->smb2.cur_credits = 1;
388 conn->smb2.max_credits = 0;
390 talloc_set_destructor(conn, smbXcli_conn_destructor);
394 if (conn->write_fd != -1) {
395 close(conn->write_fd);
401 bool smbXcli_conn_is_connected(struct smbXcli_conn *conn)
407 if (conn->read_fd == -1) {
414 enum protocol_types smbXcli_conn_protocol(struct smbXcli_conn *conn)
416 return conn->protocol;
419 bool smbXcli_conn_use_unicode(struct smbXcli_conn *conn)
421 if (conn->protocol >= PROTOCOL_SMB2_02) {
425 if (conn->smb1.capabilities & CAP_UNICODE) {
432 void smbXcli_conn_set_sockopt(struct smbXcli_conn *conn, const char *options)
434 set_socket_options(conn->read_fd, options);
437 const struct sockaddr_storage *smbXcli_conn_local_sockaddr(struct smbXcli_conn *conn)
439 return &conn->local_ss;
442 const struct sockaddr_storage *smbXcli_conn_remote_sockaddr(struct smbXcli_conn *conn)
444 return &conn->remote_ss;
447 const char *smbXcli_conn_remote_name(struct smbXcli_conn *conn)
449 return conn->remote_name;
452 uint16_t smbXcli_conn_max_requests(struct smbXcli_conn *conn)
454 if (conn->protocol >= PROTOCOL_SMB2_02) {
461 return conn->smb1.server.max_mux;
464 NTTIME smbXcli_conn_server_system_time(struct smbXcli_conn *conn)
466 if (conn->protocol >= PROTOCOL_SMB2_02) {
467 return conn->smb2.server.system_time;
470 return conn->smb1.server.system_time;
473 const DATA_BLOB *smbXcli_conn_server_gss_blob(struct smbXcli_conn *conn)
475 if (conn->protocol >= PROTOCOL_SMB2_02) {
476 return &conn->smb2.server.gss_blob;
479 return &conn->smb1.server.gss_blob;
482 const struct GUID *smbXcli_conn_server_guid(struct smbXcli_conn *conn)
484 if (conn->protocol >= PROTOCOL_SMB2_02) {
485 return &conn->smb2.server.guid;
488 return &conn->smb1.server.guid;
491 struct smbXcli_conn_samba_suicide_state {
492 struct smbXcli_conn *conn;
497 static void smbXcli_conn_samba_suicide_done(struct tevent_req *subreq);
499 struct tevent_req *smbXcli_conn_samba_suicide_send(TALLOC_CTX *mem_ctx,
500 struct tevent_context *ev,
501 struct smbXcli_conn *conn,
504 struct tevent_req *req, *subreq;
505 struct smbXcli_conn_samba_suicide_state *state;
507 req = tevent_req_create(mem_ctx, &state,
508 struct smbXcli_conn_samba_suicide_state);
513 SIVAL(state->buf, 4, 0x74697865);
514 SCVAL(state->buf, 8, exitcode);
515 _smb_setlen_nbt(state->buf, sizeof(state->buf)-4);
517 state->iov.iov_base = state->buf;
518 state->iov.iov_len = sizeof(state->buf);
520 subreq = writev_send(state, ev, conn->outgoing, conn->write_fd,
521 false, &state->iov, 1);
522 if (tevent_req_nomem(subreq, req)) {
523 return tevent_req_post(req, ev);
525 tevent_req_set_callback(subreq, smbXcli_conn_samba_suicide_done, req);
529 static void smbXcli_conn_samba_suicide_done(struct tevent_req *subreq)
531 struct tevent_req *req = tevent_req_callback_data(
532 subreq, struct tevent_req);
533 struct smbXcli_conn_samba_suicide_state *state = tevent_req_data(
534 req, struct smbXcli_conn_samba_suicide_state);
538 nwritten = writev_recv(subreq, &err);
540 if (nwritten == -1) {
541 NTSTATUS status = map_nt_error_from_unix_common(err);
542 smbXcli_conn_disconnect(state->conn, status);
545 tevent_req_done(req);
548 NTSTATUS smbXcli_conn_samba_suicide_recv(struct tevent_req *req)
550 return tevent_req_simple_recv_ntstatus(req);
553 NTSTATUS smbXcli_conn_samba_suicide(struct smbXcli_conn *conn,
556 TALLOC_CTX *frame = talloc_stackframe();
557 struct tevent_context *ev;
558 struct tevent_req *req;
559 NTSTATUS status = NT_STATUS_NO_MEMORY;
562 if (smbXcli_conn_has_async_calls(conn)) {
564 * Can't use sync call while an async call is in flight
566 status = NT_STATUS_INVALID_PARAMETER_MIX;
569 ev = samba_tevent_context_init(frame);
573 req = smbXcli_conn_samba_suicide_send(frame, ev, conn, exitcode);
577 ok = tevent_req_poll(req, ev);
579 status = map_nt_error_from_unix_common(errno);
582 status = smbXcli_conn_samba_suicide_recv(req);
588 uint32_t smb1cli_conn_capabilities(struct smbXcli_conn *conn)
590 return conn->smb1.capabilities;
593 uint32_t smb1cli_conn_max_xmit(struct smbXcli_conn *conn)
595 return conn->smb1.max_xmit;
598 bool smb1cli_conn_req_possible(struct smbXcli_conn *conn)
601 uint16_t possible = conn->smb1.server.max_mux;
603 pending = tevent_queue_length(conn->outgoing);
604 if (pending >= possible) {
607 pending += talloc_array_length(conn->pending);
608 if (pending >= possible) {
615 uint32_t smb1cli_conn_server_session_key(struct smbXcli_conn *conn)
617 return conn->smb1.server.session_key;
620 const uint8_t *smb1cli_conn_server_challenge(struct smbXcli_conn *conn)
622 return conn->smb1.server.challenge;
625 uint16_t smb1cli_conn_server_security_mode(struct smbXcli_conn *conn)
627 return conn->smb1.server.security_mode;
630 bool smb1cli_conn_server_readbraw(struct smbXcli_conn *conn)
632 return conn->smb1.server.readbraw;
635 bool smb1cli_conn_server_writebraw(struct smbXcli_conn *conn)
637 return conn->smb1.server.writebraw;
640 bool smb1cli_conn_server_lockread(struct smbXcli_conn *conn)
642 return conn->smb1.server.lockread;
645 bool smb1cli_conn_server_writeunlock(struct smbXcli_conn *conn)
647 return conn->smb1.server.writeunlock;
650 int smb1cli_conn_server_time_zone(struct smbXcli_conn *conn)
652 return conn->smb1.server.time_zone;
655 bool smb1cli_conn_activate_signing(struct smbXcli_conn *conn,
656 const DATA_BLOB user_session_key,
657 const DATA_BLOB response)
659 return smb_signing_activate(conn->smb1.signing,
664 bool smb1cli_conn_check_signing(struct smbXcli_conn *conn,
665 const uint8_t *buf, uint32_t seqnum)
667 const uint8_t *hdr = buf + NBT_HDR_SIZE;
668 size_t len = smb_len_nbt(buf);
670 return smb_signing_check_pdu(conn->smb1.signing, hdr, len, seqnum);
673 bool smb1cli_conn_signing_is_active(struct smbXcli_conn *conn)
675 return smb_signing_is_active(conn->smb1.signing);
678 void smb1cli_conn_set_encryption(struct smbXcli_conn *conn,
679 struct smb_trans_enc_state *es)
681 /* Replace the old state, if any. */
682 if (conn->smb1.trans_enc) {
683 TALLOC_FREE(conn->smb1.trans_enc);
685 conn->smb1.trans_enc = es;
688 bool smb1cli_conn_encryption_on(struct smbXcli_conn *conn)
690 return common_encryption_on(conn->smb1.trans_enc);
694 static NTSTATUS smb1cli_pull_raw_error(const uint8_t *hdr)
696 uint32_t flags2 = SVAL(hdr, HDR_FLG2);
697 NTSTATUS status = NT_STATUS(IVAL(hdr, HDR_RCLS));
699 if (NT_STATUS_IS_OK(status)) {
703 if (flags2 & FLAGS2_32_BIT_ERROR_CODES) {
707 return NT_STATUS_DOS(CVAL(hdr, HDR_RCLS), SVAL(hdr, HDR_ERR));
711 * Is the SMB command able to hold an AND_X successor
712 * @param[in] cmd The SMB command in question
713 * @retval Can we add a chained request after "cmd"?
715 bool smb1cli_is_andx_req(uint8_t cmd)
735 static uint16_t smb1cli_alloc_mid(struct smbXcli_conn *conn)
737 size_t num_pending = talloc_array_length(conn->pending);
740 if (conn->protocol == PROTOCOL_NONE) {
742 * This is what windows sends on the SMB1 Negprot request
743 * and some vendors reuse the SMB1 MID as SMB2 sequence number.
751 result = conn->smb1.mid++;
752 if ((result == 0) || (result == 0xffff)) {
756 for (i=0; i<num_pending; i++) {
757 if (result == smb1cli_req_mid(conn->pending[i])) {
762 if (i == num_pending) {
768 void smbXcli_req_unset_pending(struct tevent_req *req)
770 struct smbXcli_req_state *state =
772 struct smbXcli_req_state);
773 struct smbXcli_conn *conn = state->conn;
774 size_t num_pending = talloc_array_length(conn->pending);
777 if (state->smb1.mid != 0) {
779 * This is a [nt]trans[2] request which waits
780 * for more than one reply.
785 talloc_set_destructor(req, NULL);
787 if (num_pending == 1) {
789 * The pending read_smb tevent_req is a child of
790 * conn->pending. So if nothing is pending anymore, we need to
791 * delete the socket read fde.
793 TALLOC_FREE(conn->pending);
794 conn->read_smb_req = NULL;
798 for (i=0; i<num_pending; i++) {
799 if (req == conn->pending[i]) {
803 if (i == num_pending) {
805 * Something's seriously broken. Just returning here is the
806 * right thing nevertheless, the point of this routine is to
807 * remove ourselves from conn->pending.
813 * Remove ourselves from the conn->pending array
815 for (; i < (num_pending - 1); i++) {
816 conn->pending[i] = conn->pending[i+1];
820 * No NULL check here, we're shrinking by sizeof(void *), and
821 * talloc_realloc just adjusts the size for this.
823 conn->pending = talloc_realloc(NULL, conn->pending, struct tevent_req *,
828 static int smbXcli_req_destructor(struct tevent_req *req)
830 struct smbXcli_req_state *state =
832 struct smbXcli_req_state);
835 * Make sure we really remove it from
836 * the pending array on destruction.
839 smbXcli_req_unset_pending(req);
843 static bool smb1cli_req_cancel(struct tevent_req *req);
844 static bool smb2cli_req_cancel(struct tevent_req *req);
846 static bool smbXcli_req_cancel(struct tevent_req *req)
848 struct smbXcli_req_state *state =
850 struct smbXcli_req_state);
852 if (!smbXcli_conn_is_connected(state->conn)) {
856 if (state->conn->protocol == PROTOCOL_NONE) {
860 if (state->conn->protocol >= PROTOCOL_SMB2_02) {
861 return smb2cli_req_cancel(req);
864 return smb1cli_req_cancel(req);
867 static bool smbXcli_conn_receive_next(struct smbXcli_conn *conn);
869 bool smbXcli_req_set_pending(struct tevent_req *req)
871 struct smbXcli_req_state *state =
873 struct smbXcli_req_state);
874 struct smbXcli_conn *conn;
875 struct tevent_req **pending;
880 if (!smbXcli_conn_is_connected(conn)) {
884 num_pending = talloc_array_length(conn->pending);
886 pending = talloc_realloc(conn, conn->pending, struct tevent_req *,
888 if (pending == NULL) {
891 pending[num_pending] = req;
892 conn->pending = pending;
893 talloc_set_destructor(req, smbXcli_req_destructor);
894 tevent_req_set_cancel_fn(req, smbXcli_req_cancel);
896 if (!smbXcli_conn_receive_next(conn)) {
898 * the caller should notify the current request
900 * And all other pending requests get notified
901 * by smbXcli_conn_disconnect().
903 smbXcli_req_unset_pending(req);
904 smbXcli_conn_disconnect(conn, NT_STATUS_NO_MEMORY);
911 static void smbXcli_conn_received(struct tevent_req *subreq);
913 static bool smbXcli_conn_receive_next(struct smbXcli_conn *conn)
915 size_t num_pending = talloc_array_length(conn->pending);
916 struct tevent_req *req;
917 struct smbXcli_req_state *state;
919 if (conn->read_smb_req != NULL) {
923 if (num_pending == 0) {
924 if (conn->smb2.mid < UINT64_MAX) {
925 /* no more pending requests, so we are done for now */
930 * If there are no more SMB2 requests possible,
931 * because we are out of message ids,
932 * we need to disconnect.
934 smbXcli_conn_disconnect(conn, NT_STATUS_CONNECTION_ABORTED);
938 req = conn->pending[0];
939 state = tevent_req_data(req, struct smbXcli_req_state);
942 * We're the first ones, add the read_smb request that waits for the
943 * answer from the server
945 conn->read_smb_req = read_smb_send(conn->pending,
948 if (conn->read_smb_req == NULL) {
951 tevent_req_set_callback(conn->read_smb_req, smbXcli_conn_received, conn);
955 void smbXcli_conn_disconnect(struct smbXcli_conn *conn, NTSTATUS status)
957 struct smbXcli_session *session;
959 tevent_queue_stop(conn->outgoing);
961 if (conn->read_fd != -1) {
962 close(conn->read_fd);
964 if (conn->write_fd != -1) {
965 close(conn->write_fd);
970 session = conn->sessions;
971 if (talloc_array_length(conn->pending) == 0) {
973 * if we do not have pending requests
974 * there is no need to update the channel_sequence
978 for (; session; session = session->next) {
979 smb2cli_session_increment_channel_sequence(session);
983 * Cancel all pending requests. We do not do a for-loop walking
984 * conn->pending because that array changes in
985 * smbXcli_req_unset_pending.
987 while (talloc_array_length(conn->pending) > 0) {
988 struct tevent_req *req;
989 struct smbXcli_req_state *state;
990 struct tevent_req **chain;
994 req = conn->pending[0];
995 state = tevent_req_data(req, struct smbXcli_req_state);
997 if (state->smb1.chained_requests == NULL) {
999 * We're dead. No point waiting for trans2
1002 state->smb1.mid = 0;
1004 smbXcli_req_unset_pending(req);
1006 if (NT_STATUS_IS_OK(status)) {
1007 /* do not notify the callers */
1012 * we need to defer the callback, because we may notify
1013 * more then one caller.
1015 tevent_req_defer_callback(req, state->ev);
1016 tevent_req_nterror(req, status);
1020 chain = talloc_move(conn, &state->smb1.chained_requests);
1021 num_chained = talloc_array_length(chain);
1023 for (i=0; i<num_chained; i++) {
1025 state = tevent_req_data(req, struct smbXcli_req_state);
1028 * We're dead. No point waiting for trans2
1031 state->smb1.mid = 0;
1033 smbXcli_req_unset_pending(req);
1035 if (NT_STATUS_IS_OK(status)) {
1036 /* do not notify the callers */
1041 * we need to defer the callback, because we may notify
1042 * more than one caller.
1044 tevent_req_defer_callback(req, state->ev);
1045 tevent_req_nterror(req, status);
1052 * Fetch a smb request's mid. Only valid after the request has been sent by
1053 * smb1cli_req_send().
1055 uint16_t smb1cli_req_mid(struct tevent_req *req)
1057 struct smbXcli_req_state *state =
1058 tevent_req_data(req,
1059 struct smbXcli_req_state);
1061 if (state->smb1.mid != 0) {
1062 return state->smb1.mid;
1065 return SVAL(state->smb1.hdr, HDR_MID);
1068 void smb1cli_req_set_mid(struct tevent_req *req, uint16_t mid)
1070 struct smbXcli_req_state *state =
1071 tevent_req_data(req,
1072 struct smbXcli_req_state);
1074 state->smb1.mid = mid;
1077 uint32_t smb1cli_req_seqnum(struct tevent_req *req)
1079 struct smbXcli_req_state *state =
1080 tevent_req_data(req,
1081 struct smbXcli_req_state);
1083 return state->smb1.seqnum;
1086 void smb1cli_req_set_seqnum(struct tevent_req *req, uint32_t seqnum)
1088 struct smbXcli_req_state *state =
1089 tevent_req_data(req,
1090 struct smbXcli_req_state);
1092 state->smb1.seqnum = seqnum;
1095 static size_t smbXcli_iov_len(const struct iovec *iov, int count)
1099 for (i=0; i<count; i++) {
1100 result += iov[i].iov_len;
1105 static uint8_t *smbXcli_iov_concat(TALLOC_CTX *mem_ctx,
1106 const struct iovec *iov,
1109 size_t len = smbXcli_iov_len(iov, count);
1114 buf = talloc_array(mem_ctx, uint8_t, len);
1119 for (i=0; i<count; i++) {
1120 memcpy(buf+copied, iov[i].iov_base, iov[i].iov_len);
1121 copied += iov[i].iov_len;
1126 static void smb1cli_req_flags(enum protocol_types protocol,
1127 uint32_t smb1_capabilities,
1128 uint8_t smb_command,
1129 uint8_t additional_flags,
1130 uint8_t clear_flags,
1132 uint16_t additional_flags2,
1133 uint16_t clear_flags2,
1137 uint16_t flags2 = 0;
1139 if (protocol >= PROTOCOL_LANMAN1) {
1140 flags |= FLAG_CASELESS_PATHNAMES;
1141 flags |= FLAG_CANONICAL_PATHNAMES;
1144 if (protocol >= PROTOCOL_LANMAN2) {
1145 flags2 |= FLAGS2_LONG_PATH_COMPONENTS;
1146 flags2 |= FLAGS2_EXTENDED_ATTRIBUTES;
1149 if (protocol >= PROTOCOL_NT1) {
1150 flags2 |= FLAGS2_IS_LONG_NAME;
1152 if (smb1_capabilities & CAP_UNICODE) {
1153 flags2 |= FLAGS2_UNICODE_STRINGS;
1155 if (smb1_capabilities & CAP_STATUS32) {
1156 flags2 |= FLAGS2_32_BIT_ERROR_CODES;
1158 if (smb1_capabilities & CAP_EXTENDED_SECURITY) {
1159 flags2 |= FLAGS2_EXTENDED_SECURITY;
1163 flags |= additional_flags;
1164 flags &= ~clear_flags;
1165 flags2 |= additional_flags2;
1166 flags2 &= ~clear_flags2;
1172 static void smb1cli_req_cancel_done(struct tevent_req *subreq);
1174 static bool smb1cli_req_cancel(struct tevent_req *req)
1176 struct smbXcli_req_state *state =
1177 tevent_req_data(req,
1178 struct smbXcli_req_state);
1183 struct tevent_req *subreq;
1186 flags = CVAL(state->smb1.hdr, HDR_FLG);
1187 flags2 = SVAL(state->smb1.hdr, HDR_FLG2);
1188 pid = SVAL(state->smb1.hdr, HDR_PID);
1189 pid |= SVAL(state->smb1.hdr, HDR_PIDHIGH)<<16;
1190 mid = SVAL(state->smb1.hdr, HDR_MID);
1192 subreq = smb1cli_req_create(state, state->ev,
1202 0, NULL); /* bytes */
1203 if (subreq == NULL) {
1206 smb1cli_req_set_mid(subreq, mid);
1208 status = smb1cli_req_chain_submit(&subreq, 1);
1209 if (!NT_STATUS_IS_OK(status)) {
1210 TALLOC_FREE(subreq);
1213 smb1cli_req_set_mid(subreq, 0);
1215 tevent_req_set_callback(subreq, smb1cli_req_cancel_done, NULL);
1220 static void smb1cli_req_cancel_done(struct tevent_req *subreq)
1222 /* we do not care about the result */
1223 TALLOC_FREE(subreq);
1226 struct tevent_req *smb1cli_req_create(TALLOC_CTX *mem_ctx,
1227 struct tevent_context *ev,
1228 struct smbXcli_conn *conn,
1229 uint8_t smb_command,
1230 uint8_t additional_flags,
1231 uint8_t clear_flags,
1232 uint16_t additional_flags2,
1233 uint16_t clear_flags2,
1234 uint32_t timeout_msec,
1236 struct smbXcli_tcon *tcon,
1237 struct smbXcli_session *session,
1238 uint8_t wct, uint16_t *vwv,
1240 struct iovec *bytes_iov)
1242 struct tevent_req *req;
1243 struct smbXcli_req_state *state;
1245 uint16_t flags2 = 0;
1249 if (iov_count > MAX_SMB_IOV) {
1251 * Should not happen :-)
1256 req = tevent_req_create(mem_ctx, &state,
1257 struct smbXcli_req_state);
1263 state->session = session;
1267 uid = session->smb1.session_id;
1271 tid = tcon->smb1.tcon_id;
1274 state->smb1.recv_cmd = 0xFF;
1275 state->smb1.recv_status = NT_STATUS_INTERNAL_ERROR;
1276 state->smb1.recv_iov = talloc_zero_array(state, struct iovec, 3);
1277 if (state->smb1.recv_iov == NULL) {
1282 smb1cli_req_flags(conn->protocol,
1283 conn->smb1.capabilities,
1292 SIVAL(state->smb1.hdr, 0, SMB_MAGIC);
1293 SCVAL(state->smb1.hdr, HDR_COM, smb_command);
1294 SIVAL(state->smb1.hdr, HDR_RCLS, NT_STATUS_V(NT_STATUS_OK));
1295 SCVAL(state->smb1.hdr, HDR_FLG, flags);
1296 SSVAL(state->smb1.hdr, HDR_FLG2, flags2);
1297 SSVAL(state->smb1.hdr, HDR_PIDHIGH, pid >> 16);
1298 SSVAL(state->smb1.hdr, HDR_TID, tid);
1299 SSVAL(state->smb1.hdr, HDR_PID, pid);
1300 SSVAL(state->smb1.hdr, HDR_UID, uid);
1301 SSVAL(state->smb1.hdr, HDR_MID, 0); /* this comes later */
1302 SCVAL(state->smb1.hdr, HDR_WCT, wct);
1304 state->smb1.vwv = vwv;
1306 SSVAL(state->smb1.bytecount_buf, 0, smbXcli_iov_len(bytes_iov, iov_count));
1308 state->smb1.iov[0].iov_base = (void *)state->length_hdr;
1309 state->smb1.iov[0].iov_len = sizeof(state->length_hdr);
1310 state->smb1.iov[1].iov_base = (void *)state->smb1.hdr;
1311 state->smb1.iov[1].iov_len = sizeof(state->smb1.hdr);
1312 state->smb1.iov[2].iov_base = (void *)state->smb1.vwv;
1313 state->smb1.iov[2].iov_len = wct * sizeof(uint16_t);
1314 state->smb1.iov[3].iov_base = (void *)state->smb1.bytecount_buf;
1315 state->smb1.iov[3].iov_len = sizeof(uint16_t);
1317 if (iov_count != 0) {
1318 memcpy(&state->smb1.iov[4], bytes_iov,
1319 iov_count * sizeof(*bytes_iov));
1321 state->smb1.iov_count = iov_count + 4;
1323 if (timeout_msec > 0) {
1324 struct timeval endtime;
1326 endtime = timeval_current_ofs_msec(timeout_msec);
1327 if (!tevent_req_set_endtime(req, ev, endtime)) {
1332 switch (smb_command) {
1336 state->one_way = true;
1339 state->one_way = true;
1340 state->smb1.one_way_seqnum = true;
1344 (CVAL(vwv+3, 0) == LOCKING_ANDX_OPLOCK_RELEASE)) {
1345 state->one_way = true;
1353 static NTSTATUS smb1cli_conn_signv(struct smbXcli_conn *conn,
1354 struct iovec *iov, int iov_count,
1356 bool one_way_seqnum)
1358 TALLOC_CTX *frame = NULL;
1362 * Obvious optimization: Make cli_calculate_sign_mac work with struct
1363 * iovec directly. MD5Update would do that just fine.
1366 if (iov_count < 4) {
1367 return NT_STATUS_INVALID_PARAMETER_MIX;
1369 if (iov[0].iov_len != NBT_HDR_SIZE) {
1370 return NT_STATUS_INVALID_PARAMETER_MIX;
1372 if (iov[1].iov_len != (MIN_SMB_SIZE-sizeof(uint16_t))) {
1373 return NT_STATUS_INVALID_PARAMETER_MIX;
1375 if (iov[2].iov_len > (0xFF * sizeof(uint16_t))) {
1376 return NT_STATUS_INVALID_PARAMETER_MIX;
1378 if (iov[3].iov_len != sizeof(uint16_t)) {
1379 return NT_STATUS_INVALID_PARAMETER_MIX;
1382 frame = talloc_stackframe();
1384 buf = smbXcli_iov_concat(frame, &iov[1], iov_count - 1);
1386 return NT_STATUS_NO_MEMORY;
1389 *seqnum = smb_signing_next_seqnum(conn->smb1.signing,
1391 smb_signing_sign_pdu(conn->smb1.signing,
1392 buf, talloc_get_size(buf),
1394 memcpy(iov[1].iov_base, buf, iov[1].iov_len);
1397 return NT_STATUS_OK;
1400 static void smb1cli_req_writev_done(struct tevent_req *subreq);
1401 static NTSTATUS smb1cli_conn_dispatch_incoming(struct smbXcli_conn *conn,
1402 TALLOC_CTX *tmp_mem,
1405 static NTSTATUS smb1cli_req_writev_submit(struct tevent_req *req,
1406 struct smbXcli_req_state *state,
1407 struct iovec *iov, int iov_count)
1409 struct tevent_req *subreq;
1414 if (!smbXcli_conn_is_connected(state->conn)) {
1415 return NT_STATUS_CONNECTION_DISCONNECTED;
1418 if (state->conn->protocol > PROTOCOL_NT1) {
1419 return NT_STATUS_REVISION_MISMATCH;
1422 if (iov_count < 4) {
1423 return NT_STATUS_INVALID_PARAMETER_MIX;
1425 if (iov[0].iov_len != NBT_HDR_SIZE) {
1426 return NT_STATUS_INVALID_PARAMETER_MIX;
1428 if (iov[1].iov_len != (MIN_SMB_SIZE-sizeof(uint16_t))) {
1429 return NT_STATUS_INVALID_PARAMETER_MIX;
1431 if (iov[2].iov_len > (0xFF * sizeof(uint16_t))) {
1432 return NT_STATUS_INVALID_PARAMETER_MIX;
1434 if (iov[3].iov_len != sizeof(uint16_t)) {
1435 return NT_STATUS_INVALID_PARAMETER_MIX;
1438 cmd = CVAL(iov[1].iov_base, HDR_COM);
1439 if (cmd == SMBreadBraw) {
1440 if (smbXcli_conn_has_async_calls(state->conn)) {
1441 return NT_STATUS_INVALID_PARAMETER_MIX;
1443 state->conn->smb1.read_braw_req = req;
1446 if (state->smb1.mid != 0) {
1447 mid = state->smb1.mid;
1449 mid = smb1cli_alloc_mid(state->conn);
1451 SSVAL(iov[1].iov_base, HDR_MID, mid);
1453 _smb_setlen_nbt(iov[0].iov_base, smbXcli_iov_len(&iov[1], iov_count-1));
1455 status = smb1cli_conn_signv(state->conn, iov, iov_count,
1456 &state->smb1.seqnum,
1457 state->smb1.one_way_seqnum);
1459 if (!NT_STATUS_IS_OK(status)) {
1464 * If we supported multiple encrytion contexts
1465 * here we'd look up based on tid.
1467 if (common_encryption_on(state->conn->smb1.trans_enc)) {
1468 char *buf, *enc_buf;
1470 buf = (char *)smbXcli_iov_concat(talloc_tos(), iov, iov_count);
1472 return NT_STATUS_NO_MEMORY;
1474 status = common_encrypt_buffer(state->conn->smb1.trans_enc,
1475 (char *)buf, &enc_buf);
1477 if (!NT_STATUS_IS_OK(status)) {
1478 DEBUG(0, ("Error in encrypting client message: %s\n",
1479 nt_errstr(status)));
1482 buf = (char *)talloc_memdup(state, enc_buf,
1483 smb_len_nbt(enc_buf)+4);
1486 return NT_STATUS_NO_MEMORY;
1488 iov[0].iov_base = (void *)buf;
1489 iov[0].iov_len = talloc_get_size(buf);
1493 if (state->conn->dispatch_incoming == NULL) {
1494 state->conn->dispatch_incoming = smb1cli_conn_dispatch_incoming;
1497 tevent_req_set_cancel_fn(req, smbXcli_req_cancel);
1499 subreq = writev_send(state, state->ev, state->conn->outgoing,
1500 state->conn->write_fd, false, iov, iov_count);
1501 if (subreq == NULL) {
1502 return NT_STATUS_NO_MEMORY;
1504 tevent_req_set_callback(subreq, smb1cli_req_writev_done, req);
1505 return NT_STATUS_OK;
1508 struct tevent_req *smb1cli_req_send(TALLOC_CTX *mem_ctx,
1509 struct tevent_context *ev,
1510 struct smbXcli_conn *conn,
1511 uint8_t smb_command,
1512 uint8_t additional_flags,
1513 uint8_t clear_flags,
1514 uint16_t additional_flags2,
1515 uint16_t clear_flags2,
1516 uint32_t timeout_msec,
1518 struct smbXcli_tcon *tcon,
1519 struct smbXcli_session *session,
1520 uint8_t wct, uint16_t *vwv,
1522 const uint8_t *bytes)
1524 struct tevent_req *req;
1528 iov.iov_base = discard_const_p(void, bytes);
1529 iov.iov_len = num_bytes;
1531 req = smb1cli_req_create(mem_ctx, ev, conn, smb_command,
1532 additional_flags, clear_flags,
1533 additional_flags2, clear_flags2,
1540 if (!tevent_req_is_in_progress(req)) {
1541 return tevent_req_post(req, ev);
1543 status = smb1cli_req_chain_submit(&req, 1);
1544 if (tevent_req_nterror(req, status)) {
1545 return tevent_req_post(req, ev);
1550 static void smb1cli_req_writev_done(struct tevent_req *subreq)
1552 struct tevent_req *req =
1553 tevent_req_callback_data(subreq,
1555 struct smbXcli_req_state *state =
1556 tevent_req_data(req,
1557 struct smbXcli_req_state);
1561 nwritten = writev_recv(subreq, &err);
1562 TALLOC_FREE(subreq);
1563 if (nwritten == -1) {
1564 NTSTATUS status = map_nt_error_from_unix_common(err);
1565 smbXcli_conn_disconnect(state->conn, status);
1569 if (state->one_way) {
1570 state->inbuf = NULL;
1571 tevent_req_done(req);
1575 if (!smbXcli_req_set_pending(req)) {
1576 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
1581 static void smbXcli_conn_received(struct tevent_req *subreq)
1583 struct smbXcli_conn *conn =
1584 tevent_req_callback_data(subreq,
1585 struct smbXcli_conn);
1586 TALLOC_CTX *frame = talloc_stackframe();
1592 if (subreq != conn->read_smb_req) {
1593 DEBUG(1, ("Internal error: cli_smb_received called with "
1594 "unexpected subreq\n"));
1595 smbXcli_conn_disconnect(conn, NT_STATUS_INTERNAL_ERROR);
1599 conn->read_smb_req = NULL;
1601 received = read_smb_recv(subreq, frame, &inbuf, &err);
1602 TALLOC_FREE(subreq);
1603 if (received == -1) {
1604 status = map_nt_error_from_unix_common(err);
1605 smbXcli_conn_disconnect(conn, status);
1610 status = conn->dispatch_incoming(conn, frame, inbuf);
1612 if (NT_STATUS_IS_OK(status)) {
1614 * We should not do any more processing
1615 * as the dispatch function called
1616 * tevent_req_done().
1621 if (!NT_STATUS_EQUAL(status, NT_STATUS_RETRY)) {
1623 * We got an error, so notify all pending requests
1625 smbXcli_conn_disconnect(conn, status);
1630 * We got NT_STATUS_RETRY, so we may ask for a
1631 * next incoming pdu.
1633 if (!smbXcli_conn_receive_next(conn)) {
1634 smbXcli_conn_disconnect(conn, NT_STATUS_NO_MEMORY);
1638 static NTSTATUS smb1cli_inbuf_parse_chain(uint8_t *buf, TALLOC_CTX *mem_ctx,
1639 struct iovec **piov, int *pnum_iov)
1650 size_t min_size = MIN_SMB_SIZE;
1652 buflen = smb_len_tcp(buf);
1655 hdr = buf + NBT_HDR_SIZE;
1657 status = smb1cli_pull_raw_error(hdr);
1658 if (NT_STATUS_IS_ERR(status)) {
1660 * This is an ugly hack to support OS/2
1661 * which skips the byte_count in the DATA block
1662 * on some error responses.
1666 min_size -= sizeof(uint16_t);
1669 if (buflen < min_size) {
1670 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1674 * This returns iovec elements in the following order:
1689 iov = talloc_array(mem_ctx, struct iovec, num_iov);
1691 return NT_STATUS_NO_MEMORY;
1693 iov[0].iov_base = hdr;
1694 iov[0].iov_len = HDR_WCT;
1697 cmd = CVAL(hdr, HDR_COM);
1701 size_t len = buflen - taken;
1703 struct iovec *iov_tmp;
1710 * we need at least WCT
1712 needed = sizeof(uint8_t);
1714 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1715 __location__, (int)len, (int)needed));
1720 * Now we check if the specified words are there
1722 wct = CVAL(hdr, wct_ofs);
1723 needed += wct * sizeof(uint16_t);
1725 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1726 __location__, (int)len, (int)needed));
1730 if ((num_iov == 1) &&
1732 NT_STATUS_IS_ERR(status))
1735 * This is an ugly hack to support OS/2
1736 * which skips the byte_count in the DATA block
1737 * on some error responses.
1741 iov_tmp = talloc_realloc(mem_ctx, iov, struct iovec,
1743 if (iov_tmp == NULL) {
1745 return NT_STATUS_NO_MEMORY;
1748 cur = &iov[num_iov];
1752 cur[0].iov_base = hdr + (wct_ofs + sizeof(uint8_t));
1754 cur[1].iov_base = cur[0].iov_base;
1761 * we need at least BCC
1763 needed += sizeof(uint16_t);
1765 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1766 __location__, (int)len, (int)needed));
1771 * Now we check if the specified bytes are there
1773 bcc_ofs = wct_ofs + sizeof(uint8_t) + wct * sizeof(uint16_t);
1774 bcc = SVAL(hdr, bcc_ofs);
1775 needed += bcc * sizeof(uint8_t);
1777 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1778 __location__, (int)len, (int)needed));
1783 * we allocate 2 iovec structures for words and bytes
1785 iov_tmp = talloc_realloc(mem_ctx, iov, struct iovec,
1787 if (iov_tmp == NULL) {
1789 return NT_STATUS_NO_MEMORY;
1792 cur = &iov[num_iov];
1795 cur[0].iov_len = wct * sizeof(uint16_t);
1796 cur[0].iov_base = hdr + (wct_ofs + sizeof(uint8_t));
1797 cur[1].iov_len = bcc * sizeof(uint8_t);
1798 cur[1].iov_base = hdr + (bcc_ofs + sizeof(uint16_t));
1802 if (!smb1cli_is_andx_req(cmd)) {
1804 * If the current command does not have AndX chanining
1810 if (wct == 0 && bcc == 0) {
1812 * An empty response also ends the chain,
1813 * most likely with an error.
1819 DEBUG(10, ("%s: wct[%d] < 2 for cmd[0x%02X]\n",
1820 __location__, (int)wct, (int)cmd));
1823 cmd = CVAL(cur[0].iov_base, 0);
1826 * If it is the end of the chain we are also done.
1830 wct_ofs = SVAL(cur[0].iov_base, 2);
1832 if (wct_ofs < taken) {
1833 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1835 if (wct_ofs > buflen) {
1836 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1840 * we consumed everything up to the start of the next
1846 remaining = buflen - taken;
1848 if (remaining > 0 && num_iov >= 3) {
1850 * The last DATA block gets the remaining
1851 * bytes, this is needed to support
1852 * CAP_LARGE_WRITEX and CAP_LARGE_READX.
1854 iov[num_iov-1].iov_len += remaining;
1858 *pnum_iov = num_iov;
1859 return NT_STATUS_OK;
1863 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1866 static NTSTATUS smb1cli_conn_dispatch_incoming(struct smbXcli_conn *conn,
1867 TALLOC_CTX *tmp_mem,
1870 struct tevent_req *req;
1871 struct smbXcli_req_state *state;
1878 uint8_t *inhdr = inbuf + NBT_HDR_SIZE;
1879 size_t len = smb_len_tcp(inbuf);
1880 struct iovec *iov = NULL;
1882 struct tevent_req **chain = NULL;
1883 size_t num_chained = 0;
1884 size_t num_responses = 0;
1886 if (conn->smb1.read_braw_req != NULL) {
1887 req = conn->smb1.read_braw_req;
1888 conn->smb1.read_braw_req = NULL;
1889 state = tevent_req_data(req, struct smbXcli_req_state);
1891 smbXcli_req_unset_pending(req);
1893 if (state->smb1.recv_iov == NULL) {
1895 * For requests with more than
1896 * one response, we have to readd the
1899 state->smb1.recv_iov = talloc_zero_array(state,
1902 if (tevent_req_nomem(state->smb1.recv_iov, req)) {
1903 return NT_STATUS_OK;
1907 state->smb1.recv_iov[0].iov_base = (void *)(inhdr);
1908 state->smb1.recv_iov[0].iov_len = len;
1909 ZERO_STRUCT(state->smb1.recv_iov[1]);
1910 ZERO_STRUCT(state->smb1.recv_iov[2]);
1912 state->smb1.recv_cmd = SMBreadBraw;
1913 state->smb1.recv_status = NT_STATUS_OK;
1914 state->inbuf = talloc_move(state->smb1.recv_iov, &inbuf);
1916 tevent_req_done(req);
1917 return NT_STATUS_OK;
1920 if ((IVAL(inhdr, 0) != SMB_MAGIC) /* 0xFF"SMB" */
1921 && (SVAL(inhdr, 0) != 0x45ff)) /* 0xFF"E" */ {
1922 DEBUG(10, ("Got non-SMB PDU\n"));
1923 return NT_STATUS_INVALID_NETWORK_RESPONSE;
1927 * If we supported multiple encrytion contexts
1928 * here we'd look up based on tid.
1930 if (common_encryption_on(conn->smb1.trans_enc)
1931 && (CVAL(inbuf, 0) == 0)) {
1932 uint16_t enc_ctx_num;
1934 status = get_enc_ctx_num(inbuf, &enc_ctx_num);
1935 if (!NT_STATUS_IS_OK(status)) {
1936 DEBUG(10, ("get_enc_ctx_num returned %s\n",
1937 nt_errstr(status)));
1941 if (enc_ctx_num != conn->smb1.trans_enc->enc_ctx_num) {
1942 DEBUG(10, ("wrong enc_ctx %d, expected %d\n",
1944 conn->smb1.trans_enc->enc_ctx_num));
1945 return NT_STATUS_INVALID_HANDLE;
1948 status = common_decrypt_buffer(conn->smb1.trans_enc,
1950 if (!NT_STATUS_IS_OK(status)) {
1951 DEBUG(10, ("common_decrypt_buffer returned %s\n",
1952 nt_errstr(status)));
1955 inhdr = inbuf + NBT_HDR_SIZE;
1956 len = smb_len_nbt(inbuf);
1959 mid = SVAL(inhdr, HDR_MID);
1960 num_pending = talloc_array_length(conn->pending);
1962 for (i=0; i<num_pending; i++) {
1963 if (mid == smb1cli_req_mid(conn->pending[i])) {
1967 if (i == num_pending) {
1968 /* Dump unexpected reply */
1969 return NT_STATUS_RETRY;
1972 oplock_break = false;
1974 if (mid == 0xffff) {
1976 * Paranoia checks that this is really an oplock break request.
1978 oplock_break = (len == 51); /* hdr + 8 words */
1979 oplock_break &= ((CVAL(inhdr, HDR_FLG) & FLAG_REPLY) == 0);
1980 oplock_break &= (CVAL(inhdr, HDR_COM) == SMBlockingX);
1981 oplock_break &= (SVAL(inhdr, HDR_VWV+VWV(6)) == 0);
1982 oplock_break &= (SVAL(inhdr, HDR_VWV+VWV(7)) == 0);
1984 if (!oplock_break) {
1985 /* Dump unexpected reply */
1986 return NT_STATUS_RETRY;
1990 req = conn->pending[i];
1991 state = tevent_req_data(req, struct smbXcli_req_state);
1993 if (!oplock_break /* oplock breaks are not signed */
1994 && !smb_signing_check_pdu(conn->smb1.signing,
1995 inhdr, len, state->smb1.seqnum+1)) {
1996 DEBUG(10, ("cli_check_sign_mac failed\n"));
1997 return NT_STATUS_ACCESS_DENIED;
2000 status = smb1cli_inbuf_parse_chain(inbuf, tmp_mem,
2002 if (!NT_STATUS_IS_OK(status)) {
2003 DEBUG(10,("smb1cli_inbuf_parse_chain - %s\n",
2004 nt_errstr(status)));
2008 cmd = CVAL(inhdr, HDR_COM);
2009 status = smb1cli_pull_raw_error(inhdr);
2011 if (NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_SESSION_EXPIRED) &&
2012 (state->session != NULL) && state->session->disconnect_expired)
2015 * this should be a short term hack
2016 * until the upper layers have implemented
2017 * re-authentication.
2022 if (state->smb1.chained_requests == NULL) {
2024 return NT_STATUS_INVALID_NETWORK_RESPONSE;
2027 smbXcli_req_unset_pending(req);
2029 if (state->smb1.recv_iov == NULL) {
2031 * For requests with more than
2032 * one response, we have to readd the
2035 state->smb1.recv_iov = talloc_zero_array(state,
2038 if (tevent_req_nomem(state->smb1.recv_iov, req)) {
2039 return NT_STATUS_OK;
2043 state->smb1.recv_cmd = cmd;
2044 state->smb1.recv_status = status;
2045 state->inbuf = talloc_move(state->smb1.recv_iov, &inbuf);
2047 state->smb1.recv_iov[0] = iov[0];
2048 state->smb1.recv_iov[1] = iov[1];
2049 state->smb1.recv_iov[2] = iov[2];
2051 if (talloc_array_length(conn->pending) == 0) {
2052 tevent_req_done(req);
2053 return NT_STATUS_OK;
2056 tevent_req_defer_callback(req, state->ev);
2057 tevent_req_done(req);
2058 return NT_STATUS_RETRY;
2061 chain = talloc_move(tmp_mem, &state->smb1.chained_requests);
2062 num_chained = talloc_array_length(chain);
2063 num_responses = (num_iov - 1)/2;
2065 if (num_responses > num_chained) {
2066 return NT_STATUS_INVALID_NETWORK_RESPONSE;
2069 for (i=0; i<num_chained; i++) {
2070 size_t iov_idx = 1 + (i*2);
2071 struct iovec *cur = &iov[iov_idx];
2075 state = tevent_req_data(req, struct smbXcli_req_state);
2077 smbXcli_req_unset_pending(req);
2080 * as we finish multiple requests here
2081 * we need to defer the callbacks as
2082 * they could destroy our current stack state.
2084 tevent_req_defer_callback(req, state->ev);
2086 if (i >= num_responses) {
2087 tevent_req_nterror(req, NT_STATUS_REQUEST_ABORTED);
2091 if (state->smb1.recv_iov == NULL) {
2093 * For requests with more than
2094 * one response, we have to readd the
2097 state->smb1.recv_iov = talloc_zero_array(state,
2100 if (tevent_req_nomem(state->smb1.recv_iov, req)) {
2105 state->smb1.recv_cmd = cmd;
2107 if (i == (num_responses - 1)) {
2109 * The last request in the chain gets the status
2111 state->smb1.recv_status = status;
2113 cmd = CVAL(cur[0].iov_base, 0);
2114 state->smb1.recv_status = NT_STATUS_OK;
2117 state->inbuf = inbuf;
2120 * Note: here we use talloc_reference() in a way
2121 * that does not expose it to the caller.
2123 inbuf_ref = talloc_reference(state->smb1.recv_iov, inbuf);
2124 if (tevent_req_nomem(inbuf_ref, req)) {
2128 /* copy the related buffers */
2129 state->smb1.recv_iov[0] = iov[0];
2130 state->smb1.recv_iov[1] = cur[0];
2131 state->smb1.recv_iov[2] = cur[1];
2133 tevent_req_done(req);
2136 return NT_STATUS_RETRY;
2139 NTSTATUS smb1cli_req_recv(struct tevent_req *req,
2140 TALLOC_CTX *mem_ctx,
2141 struct iovec **piov,
2145 uint32_t *pvwv_offset,
2146 uint32_t *pnum_bytes,
2148 uint32_t *pbytes_offset,
2150 const struct smb1cli_req_expected_response *expected,
2151 size_t num_expected)
2153 struct smbXcli_req_state *state =
2154 tevent_req_data(req,
2155 struct smbXcli_req_state);
2156 NTSTATUS status = NT_STATUS_OK;
2157 struct iovec *recv_iov = NULL;
2158 uint8_t *hdr = NULL;
2160 uint32_t vwv_offset = 0;
2161 uint16_t *vwv = NULL;
2162 uint32_t num_bytes = 0;
2163 uint32_t bytes_offset = 0;
2164 uint8_t *bytes = NULL;
2166 bool found_status = false;
2167 bool found_size = false;
2181 if (pvwv_offset != NULL) {
2184 if (pnum_bytes != NULL) {
2187 if (pbytes != NULL) {
2190 if (pbytes_offset != NULL) {
2193 if (pinbuf != NULL) {
2197 if (state->inbuf != NULL) {
2198 recv_iov = state->smb1.recv_iov;
2199 state->smb1.recv_iov = NULL;
2200 if (state->smb1.recv_cmd != SMBreadBraw) {
2201 hdr = (uint8_t *)recv_iov[0].iov_base;
2202 wct = recv_iov[1].iov_len/2;
2203 vwv = (uint16_t *)recv_iov[1].iov_base;
2204 vwv_offset = PTR_DIFF(vwv, hdr);
2205 num_bytes = recv_iov[2].iov_len;
2206 bytes = (uint8_t *)recv_iov[2].iov_base;
2207 bytes_offset = PTR_DIFF(bytes, hdr);
2211 if (tevent_req_is_nterror(req, &status)) {
2212 for (i=0; i < num_expected; i++) {
2213 if (NT_STATUS_EQUAL(status, expected[i].status)) {
2214 found_status = true;
2220 return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
2226 if (num_expected == 0) {
2227 found_status = true;
2231 status = state->smb1.recv_status;
2233 for (i=0; i < num_expected; i++) {
2234 if (!NT_STATUS_EQUAL(status, expected[i].status)) {
2238 found_status = true;
2239 if (expected[i].wct == 0) {
2244 if (expected[i].wct == wct) {
2250 if (!found_status) {
2255 return NT_STATUS_INVALID_NETWORK_RESPONSE;
2259 *piov = talloc_move(mem_ctx, &recv_iov);
2271 if (pvwv_offset != NULL) {
2272 *pvwv_offset = vwv_offset;
2274 if (pnum_bytes != NULL) {
2275 *pnum_bytes = num_bytes;
2277 if (pbytes != NULL) {
2280 if (pbytes_offset != NULL) {
2281 *pbytes_offset = bytes_offset;
2283 if (pinbuf != NULL) {
2284 *pinbuf = state->inbuf;
2290 size_t smb1cli_req_wct_ofs(struct tevent_req **reqs, int num_reqs)
2297 for (i=0; i<num_reqs; i++) {
2298 struct smbXcli_req_state *state;
2299 state = tevent_req_data(reqs[i], struct smbXcli_req_state);
2300 wct_ofs += smbXcli_iov_len(state->smb1.iov+2,
2301 state->smb1.iov_count-2);
2302 wct_ofs = (wct_ofs + 3) & ~3;
2307 NTSTATUS smb1cli_req_chain_submit(struct tevent_req **reqs, int num_reqs)
2309 struct smbXcli_req_state *first_state =
2310 tevent_req_data(reqs[0],
2311 struct smbXcli_req_state);
2312 struct smbXcli_req_state *state;
2314 size_t chain_padding = 0;
2316 struct iovec *iov = NULL;
2317 struct iovec *this_iov;
2321 if (num_reqs == 1) {
2322 return smb1cli_req_writev_submit(reqs[0], first_state,
2323 first_state->smb1.iov,
2324 first_state->smb1.iov_count);
2328 for (i=0; i<num_reqs; i++) {
2329 if (!tevent_req_is_in_progress(reqs[i])) {
2330 return NT_STATUS_INTERNAL_ERROR;
2333 state = tevent_req_data(reqs[i], struct smbXcli_req_state);
2335 if (state->smb1.iov_count < 4) {
2336 return NT_STATUS_INVALID_PARAMETER_MIX;
2341 * The NBT and SMB header
2354 iovlen += state->smb1.iov_count - 2;
2357 iov = talloc_zero_array(first_state, struct iovec, iovlen);
2359 return NT_STATUS_NO_MEMORY;
2362 first_state->smb1.chained_requests = (struct tevent_req **)talloc_memdup(
2363 first_state, reqs, sizeof(*reqs) * num_reqs);
2364 if (first_state->smb1.chained_requests == NULL) {
2366 return NT_STATUS_NO_MEMORY;
2369 wct_offset = HDR_WCT;
2372 for (i=0; i<num_reqs; i++) {
2373 size_t next_padding = 0;
2376 state = tevent_req_data(reqs[i], struct smbXcli_req_state);
2378 if (i < num_reqs-1) {
2379 if (!smb1cli_is_andx_req(CVAL(state->smb1.hdr, HDR_COM))
2380 || CVAL(state->smb1.hdr, HDR_WCT) < 2) {
2382 TALLOC_FREE(first_state->smb1.chained_requests);
2383 return NT_STATUS_INVALID_PARAMETER_MIX;
2387 wct_offset += smbXcli_iov_len(state->smb1.iov+2,
2388 state->smb1.iov_count-2) + 1;
2389 if ((wct_offset % 4) != 0) {
2390 next_padding = 4 - (wct_offset % 4);
2392 wct_offset += next_padding;
2393 vwv = state->smb1.vwv;
2395 if (i < num_reqs-1) {
2396 struct smbXcli_req_state *next_state =
2397 tevent_req_data(reqs[i+1],
2398 struct smbXcli_req_state);
2399 SCVAL(vwv+0, 0, CVAL(next_state->smb1.hdr, HDR_COM));
2401 SSVAL(vwv+1, 0, wct_offset);
2402 } else if (smb1cli_is_andx_req(CVAL(state->smb1.hdr, HDR_COM))) {
2403 /* properly end the chain */
2404 SCVAL(vwv+0, 0, 0xff);
2405 SCVAL(vwv+0, 1, 0xff);
2411 * The NBT and SMB header
2413 this_iov[0] = state->smb1.iov[0];
2414 this_iov[1] = state->smb1.iov[1];
2418 * This one is a bit subtle. We have to add
2419 * chain_padding bytes between the requests, and we
2420 * have to also include the wct field of the
2421 * subsequent requests. We use the subsequent header
2422 * for the padding, it contains the wct field in its
2425 this_iov[0].iov_len = chain_padding+1;
2426 this_iov[0].iov_base = (void *)&state->smb1.hdr[
2427 sizeof(state->smb1.hdr) - this_iov[0].iov_len];
2428 memset(this_iov[0].iov_base, 0, this_iov[0].iov_len-1);
2433 * copy the words and bytes
2435 memcpy(this_iov, state->smb1.iov+2,
2436 sizeof(struct iovec) * (state->smb1.iov_count-2));
2437 this_iov += state->smb1.iov_count - 2;
2438 chain_padding = next_padding;
2441 nbt_len = smbXcli_iov_len(&iov[1], iovlen-1);
2442 if (nbt_len > first_state->conn->smb1.max_xmit) {
2444 TALLOC_FREE(first_state->smb1.chained_requests);
2445 return NT_STATUS_INVALID_PARAMETER_MIX;
2448 status = smb1cli_req_writev_submit(reqs[0], first_state, iov, iovlen);
2449 if (!NT_STATUS_IS_OK(status)) {
2451 TALLOC_FREE(first_state->smb1.chained_requests);
2455 return NT_STATUS_OK;
2458 bool smbXcli_conn_has_async_calls(struct smbXcli_conn *conn)
2460 return ((tevent_queue_length(conn->outgoing) != 0)
2461 || (talloc_array_length(conn->pending) != 0));
2464 bool smb2cli_conn_req_possible(struct smbXcli_conn *conn, uint32_t *max_dyn_len)
2466 uint16_t credits = 1;
2468 if (conn->smb2.cur_credits == 0) {
2469 if (max_dyn_len != NULL) {
2475 if (conn->smb2.server.capabilities & SMB2_CAP_LARGE_MTU) {
2476 credits = conn->smb2.cur_credits;
2479 if (max_dyn_len != NULL) {
2480 *max_dyn_len = credits * 65536;
2486 uint32_t smb2cli_conn_server_capabilities(struct smbXcli_conn *conn)
2488 return conn->smb2.server.capabilities;
2491 uint16_t smb2cli_conn_server_security_mode(struct smbXcli_conn *conn)
2493 return conn->smb2.server.security_mode;
2496 uint32_t smb2cli_conn_max_trans_size(struct smbXcli_conn *conn)
2498 return conn->smb2.server.max_trans_size;
2501 uint32_t smb2cli_conn_max_read_size(struct smbXcli_conn *conn)
2503 return conn->smb2.server.max_read_size;
2506 uint32_t smb2cli_conn_max_write_size(struct smbXcli_conn *conn)
2508 return conn->smb2.server.max_write_size;
2511 void smb2cli_conn_set_max_credits(struct smbXcli_conn *conn,
2512 uint16_t max_credits)
2514 conn->smb2.max_credits = max_credits;
2517 static void smb2cli_req_cancel_done(struct tevent_req *subreq);
2519 static bool smb2cli_req_cancel(struct tevent_req *req)
2521 struct smbXcli_req_state *state =
2522 tevent_req_data(req,
2523 struct smbXcli_req_state);
2524 uint32_t flags = IVAL(state->smb2.hdr, SMB2_HDR_FLAGS);
2525 uint64_t mid = BVAL(state->smb2.hdr, SMB2_HDR_MESSAGE_ID);
2526 uint64_t aid = BVAL(state->smb2.hdr, SMB2_HDR_ASYNC_ID);
2527 struct smbXcli_tcon *tcon = state->tcon;
2528 struct smbXcli_session *session = state->session;
2529 uint8_t *fixed = state->smb2.pad;
2530 uint16_t fixed_len = 4;
2531 struct tevent_req *subreq;
2532 struct smbXcli_req_state *substate;
2535 SSVAL(fixed, 0, 0x04);
2538 subreq = smb2cli_req_create(state, state->ev,
2546 if (subreq == NULL) {
2549 substate = tevent_req_data(subreq, struct smbXcli_req_state);
2552 * clear everything but the SMB2_HDR_FLAG_ASYNC flag
2553 * e.g. if SMB2_HDR_FLAG_CHAINED is set we get INVALID_PARAMETER back
2555 flags &= SMB2_HDR_FLAG_ASYNC;
2557 if (flags & SMB2_HDR_FLAG_ASYNC) {
2561 SIVAL(substate->smb2.hdr, SMB2_HDR_FLAGS, flags);
2562 SBVAL(substate->smb2.hdr, SMB2_HDR_MESSAGE_ID, mid);
2563 SBVAL(substate->smb2.hdr, SMB2_HDR_ASYNC_ID, aid);
2565 status = smb2cli_req_compound_submit(&subreq, 1);
2566 if (!NT_STATUS_IS_OK(status)) {
2567 TALLOC_FREE(subreq);
2571 tevent_req_set_callback(subreq, smb2cli_req_cancel_done, NULL);
2576 static void smb2cli_req_cancel_done(struct tevent_req *subreq)
2578 /* we do not care about the result */
2579 TALLOC_FREE(subreq);
2582 struct tevent_req *smb2cli_req_create(TALLOC_CTX *mem_ctx,
2583 struct tevent_context *ev,
2584 struct smbXcli_conn *conn,
2586 uint32_t additional_flags,
2587 uint32_t clear_flags,
2588 uint32_t timeout_msec,
2589 struct smbXcli_tcon *tcon,
2590 struct smbXcli_session *session,
2591 const uint8_t *fixed,
2595 uint32_t max_dyn_len)
2597 struct tevent_req *req;
2598 struct smbXcli_req_state *state;
2602 bool use_channel_sequence = false;
2603 uint16_t channel_sequence = 0;
2605 req = tevent_req_create(mem_ctx, &state,
2606 struct smbXcli_req_state);
2613 state->session = session;
2616 if (conn->smb2.server.capabilities & SMB2_CAP_PERSISTENT_HANDLES) {
2617 use_channel_sequence = true;
2618 } else if (conn->smb2.server.capabilities & SMB2_CAP_MULTI_CHANNEL) {
2619 use_channel_sequence = true;
2623 uid = session->smb2->session_id;
2625 if (use_channel_sequence) {
2626 channel_sequence = session->smb2->channel_sequence;
2629 state->smb2.should_sign = session->smb2->should_sign;
2630 state->smb2.should_encrypt = session->smb2->should_encrypt;
2632 if (cmd == SMB2_OP_SESSSETUP &&
2633 session->smb2->signing_key.length != 0) {
2634 state->smb2.should_sign = true;
2637 if (cmd == SMB2_OP_SESSSETUP &&
2638 session->smb2_channel.signing_key.length == 0) {
2639 state->smb2.should_encrypt = false;
2644 tid = tcon->smb2.tcon_id;
2646 if (tcon->smb2.should_encrypt) {
2647 state->smb2.should_encrypt = true;
2651 if (state->smb2.should_encrypt) {
2652 state->smb2.should_sign = false;
2655 state->smb2.recv_iov = talloc_zero_array(state, struct iovec, 3);
2656 if (state->smb2.recv_iov == NULL) {
2661 flags |= additional_flags;
2662 flags &= ~clear_flags;
2664 state->smb2.fixed = fixed;
2665 state->smb2.fixed_len = fixed_len;
2666 state->smb2.dyn = dyn;
2667 state->smb2.dyn_len = dyn_len;
2668 state->smb2.max_dyn_len = max_dyn_len;
2670 if (state->smb2.should_encrypt) {
2671 SIVAL(state->smb2.transform, SMB2_TF_PROTOCOL_ID, SMB2_TF_MAGIC);
2672 SBVAL(state->smb2.transform, SMB2_TF_SESSION_ID, uid);
2675 SIVAL(state->smb2.hdr, SMB2_HDR_PROTOCOL_ID, SMB2_MAGIC);
2676 SSVAL(state->smb2.hdr, SMB2_HDR_LENGTH, SMB2_HDR_BODY);
2677 SSVAL(state->smb2.hdr, SMB2_HDR_OPCODE, cmd);
2678 SSVAL(state->smb2.hdr, SMB2_HDR_CHANNEL_SEQUENCE, channel_sequence);
2679 SIVAL(state->smb2.hdr, SMB2_HDR_FLAGS, flags);
2680 SIVAL(state->smb2.hdr, SMB2_HDR_PID, 0); /* reserved */
2681 SIVAL(state->smb2.hdr, SMB2_HDR_TID, tid);
2682 SBVAL(state->smb2.hdr, SMB2_HDR_SESSION_ID, uid);
2685 case SMB2_OP_CANCEL:
2686 state->one_way = true;
2690 * If this is a dummy request, it will have
2691 * UINT64_MAX as message id.
2692 * If we send on break acknowledgement,
2693 * this gets overwritten later.
2695 SBVAL(state->smb2.hdr, SMB2_HDR_MESSAGE_ID, UINT64_MAX);
2699 if (timeout_msec > 0) {
2700 struct timeval endtime;
2702 endtime = timeval_current_ofs_msec(timeout_msec);
2703 if (!tevent_req_set_endtime(req, ev, endtime)) {
2711 void smb2cli_req_set_notify_async(struct tevent_req *req)
2713 struct smbXcli_req_state *state =
2714 tevent_req_data(req,
2715 struct smbXcli_req_state);
2717 state->smb2.notify_async = true;
2720 static void smb2cli_req_writev_done(struct tevent_req *subreq);
2721 static NTSTATUS smb2cli_conn_dispatch_incoming(struct smbXcli_conn *conn,
2722 TALLOC_CTX *tmp_mem,
2725 NTSTATUS smb2cli_req_compound_submit(struct tevent_req **reqs,
2728 struct smbXcli_req_state *state;
2729 struct tevent_req *subreq;
2731 int i, num_iov, nbt_len;
2733 const DATA_BLOB *encryption_key = NULL;
2734 uint64_t encryption_session_id = 0;
2737 * 1 for the nbt length, optional TRANSFORM
2738 * per request: HDR, fixed, dyn, padding
2739 * -1 because the last one does not need padding
2742 iov = talloc_array(reqs[0], struct iovec, 1 + 1 + 4*num_reqs - 1);
2744 return NT_STATUS_NO_MEMORY;
2751 * the session of the first request that requires encryption
2752 * specifies the encryption key.
2754 for (i=0; i<num_reqs; i++) {
2755 if (!tevent_req_is_in_progress(reqs[i])) {
2756 return NT_STATUS_INTERNAL_ERROR;
2759 state = tevent_req_data(reqs[i], struct smbXcli_req_state);
2761 if (!smbXcli_conn_is_connected(state->conn)) {
2762 return NT_STATUS_CONNECTION_DISCONNECTED;
2765 if ((state->conn->protocol != PROTOCOL_NONE) &&
2766 (state->conn->protocol < PROTOCOL_SMB2_02)) {
2767 return NT_STATUS_REVISION_MISMATCH;
2770 if (state->session == NULL) {
2774 if (!state->smb2.should_encrypt) {
2778 encryption_key = &state->session->smb2->encryption_key;
2779 if (encryption_key->length == 0) {
2780 return NT_STATUS_INVALID_PARAMETER_MIX;
2783 encryption_session_id = state->session->smb2->session_id;
2786 iov[num_iov].iov_base = state->smb2.transform;
2787 iov[num_iov].iov_len = sizeof(state->smb2.transform);
2790 SBVAL(state->smb2.transform, SMB2_TF_PROTOCOL_ID, SMB2_TF_MAGIC);
2791 SBVAL(state->smb2.transform, SMB2_TF_NONCE,
2792 state->session->smb2->nonce_low);
2793 SBVAL(state->smb2.transform, SMB2_TF_NONCE+8,
2794 state->session->smb2->nonce_high);
2795 SBVAL(state->smb2.transform, SMB2_TF_SESSION_ID,
2796 encryption_session_id);
2798 state->session->smb2->nonce_low += 1;
2799 if (state->session->smb2->nonce_low == 0) {
2800 state->session->smb2->nonce_high += 1;
2801 state->session->smb2->nonce_low += 1;
2804 nbt_len += SMB2_TF_HDR_SIZE;
2808 for (i=0; i<num_reqs; i++) {
2817 const DATA_BLOB *signing_key = NULL;
2819 if (!tevent_req_is_in_progress(reqs[i])) {
2820 return NT_STATUS_INTERNAL_ERROR;
2823 state = tevent_req_data(reqs[i], struct smbXcli_req_state);
2825 if (!smbXcli_conn_is_connected(state->conn)) {
2826 return NT_STATUS_CONNECTION_DISCONNECTED;
2829 if ((state->conn->protocol != PROTOCOL_NONE) &&
2830 (state->conn->protocol < PROTOCOL_SMB2_02)) {
2831 return NT_STATUS_REVISION_MISMATCH;
2834 opcode = SVAL(state->smb2.hdr, SMB2_HDR_OPCODE);
2835 if (opcode == SMB2_OP_CANCEL) {
2839 avail = UINT64_MAX - state->conn->smb2.mid;
2841 return NT_STATUS_CONNECTION_ABORTED;
2844 if (state->conn->smb2.server.capabilities & SMB2_CAP_LARGE_MTU) {
2845 uint32_t max_dyn_len = 1;
2847 max_dyn_len = MAX(max_dyn_len, state->smb2.dyn_len);
2848 max_dyn_len = MAX(max_dyn_len, state->smb2.max_dyn_len);
2850 charge = (max_dyn_len - 1)/ 65536 + 1;
2855 charge = MAX(state->smb2.credit_charge, charge);
2857 avail = MIN(avail, state->conn->smb2.cur_credits);
2858 if (avail < charge) {
2859 return NT_STATUS_INTERNAL_ERROR;
2863 if (state->conn->smb2.max_credits > state->conn->smb2.cur_credits) {
2864 credits = state->conn->smb2.max_credits -
2865 state->conn->smb2.cur_credits;
2867 if (state->conn->smb2.max_credits >= state->conn->smb2.cur_credits) {
2871 mid = state->conn->smb2.mid;
2872 state->conn->smb2.mid += charge;
2873 state->conn->smb2.cur_credits -= charge;
2875 if (state->conn->smb2.server.capabilities & SMB2_CAP_LARGE_MTU) {
2876 SSVAL(state->smb2.hdr, SMB2_HDR_CREDIT_CHARGE, charge);
2878 SSVAL(state->smb2.hdr, SMB2_HDR_CREDIT, credits);
2879 SBVAL(state->smb2.hdr, SMB2_HDR_MESSAGE_ID, mid);
2882 if (state->session && encryption_key == NULL) {
2884 * We prefer the channel signing key if it is
2887 if (state->smb2.should_sign) {
2888 signing_key = &state->session->smb2_channel.signing_key;
2892 * If it is a channel binding, we already have the main
2893 * signing key and try that one.
2895 if (signing_key && signing_key->length == 0) {
2896 signing_key = &state->session->smb2->signing_key;
2900 * If we do not have any session key yet, we skip the
2901 * signing of SMB2_OP_SESSSETUP requests.
2903 if (signing_key && signing_key->length == 0) {
2909 iov[num_iov].iov_base = state->smb2.hdr;
2910 iov[num_iov].iov_len = sizeof(state->smb2.hdr);
2913 iov[num_iov].iov_base = discard_const(state->smb2.fixed);
2914 iov[num_iov].iov_len = state->smb2.fixed_len;
2917 if (state->smb2.dyn != NULL) {
2918 iov[num_iov].iov_base = discard_const(state->smb2.dyn);
2919 iov[num_iov].iov_len = state->smb2.dyn_len;
2923 reqlen = sizeof(state->smb2.hdr);
2924 reqlen += state->smb2.fixed_len;
2925 reqlen += state->smb2.dyn_len;
2927 if (i < num_reqs-1) {
2928 if ((reqlen % 8) > 0) {
2929 uint8_t pad = 8 - (reqlen % 8);
2930 iov[num_iov].iov_base = state->smb2.pad;
2931 iov[num_iov].iov_len = pad;
2935 SIVAL(state->smb2.hdr, SMB2_HDR_NEXT_COMMAND, reqlen);
2938 state->smb2.encryption_session_id = encryption_session_id;
2940 if (signing_key != NULL) {
2943 status = smb2_signing_sign_pdu(*signing_key,
2944 state->session->conn->protocol,
2945 &iov[hdr_iov], num_iov - hdr_iov);
2946 if (!NT_STATUS_IS_OK(status)) {
2953 ret = smbXcli_req_set_pending(reqs[i]);
2955 return NT_STATUS_NO_MEMORY;
2959 state = tevent_req_data(reqs[0], struct smbXcli_req_state);
2960 _smb_setlen_tcp(state->length_hdr, nbt_len);
2961 iov[0].iov_base = state->length_hdr;
2962 iov[0].iov_len = sizeof(state->length_hdr);
2964 if (encryption_key != NULL) {
2966 size_t buflen = nbt_len - SMB2_TF_HDR_SIZE;
2970 buf = talloc_array(iov, uint8_t, buflen);
2972 return NT_STATUS_NO_MEMORY;
2976 * We copy the buffers before encrypting them,
2977 * this is at least currently needed for the
2978 * to keep state->smb2.hdr.
2980 * Also the callers may expect there buffers
2983 for (vi = tf_iov + 1; vi < num_iov; vi++) {
2984 struct iovec *v = &iov[vi];
2985 const uint8_t *o = (const uint8_t *)v->iov_base;
2987 memcpy(buf, o, v->iov_len);
2988 v->iov_base = (void *)buf;
2992 status = smb2_signing_encrypt_pdu(*encryption_key,
2993 state->conn->protocol,
2994 &iov[tf_iov], num_iov - tf_iov);
2995 if (!NT_STATUS_IS_OK(status)) {
3000 if (state->conn->dispatch_incoming == NULL) {
3001 state->conn->dispatch_incoming = smb2cli_conn_dispatch_incoming;
3004 subreq = writev_send(state, state->ev, state->conn->outgoing,
3005 state->conn->write_fd, false, iov, num_iov);
3006 if (subreq == NULL) {
3007 return NT_STATUS_NO_MEMORY;
3009 tevent_req_set_callback(subreq, smb2cli_req_writev_done, reqs[0]);
3010 return NT_STATUS_OK;
3013 void smb2cli_req_set_credit_charge(struct tevent_req *req, uint16_t charge)
3015 struct smbXcli_req_state *state =
3016 tevent_req_data(req,
3017 struct smbXcli_req_state);
3019 state->smb2.credit_charge = charge;
3022 struct tevent_req *smb2cli_req_send(TALLOC_CTX *mem_ctx,
3023 struct tevent_context *ev,
3024 struct smbXcli_conn *conn,
3026 uint32_t additional_flags,
3027 uint32_t clear_flags,
3028 uint32_t timeout_msec,
3029 struct smbXcli_tcon *tcon,
3030 struct smbXcli_session *session,
3031 const uint8_t *fixed,
3035 uint32_t max_dyn_len)
3037 struct tevent_req *req;
3040 req = smb2cli_req_create(mem_ctx, ev, conn, cmd,
3041 additional_flags, clear_flags,
3050 if (!tevent_req_is_in_progress(req)) {
3051 return tevent_req_post(req, ev);
3053 status = smb2cli_req_compound_submit(&req, 1);
3054 if (tevent_req_nterror(req, status)) {
3055 return tevent_req_post(req, ev);
3060 static void smb2cli_req_writev_done(struct tevent_req *subreq)
3062 struct tevent_req *req =
3063 tevent_req_callback_data(subreq,
3065 struct smbXcli_req_state *state =
3066 tevent_req_data(req,
3067 struct smbXcli_req_state);
3071 nwritten = writev_recv(subreq, &err);
3072 TALLOC_FREE(subreq);
3073 if (nwritten == -1) {
3074 /* here, we need to notify all pending requests */
3075 NTSTATUS status = map_nt_error_from_unix_common(err);
3076 smbXcli_conn_disconnect(state->conn, status);
3081 static NTSTATUS smb2cli_inbuf_parse_compound(struct smbXcli_conn *conn,
3084 TALLOC_CTX *mem_ctx,
3085 struct iovec **piov, int *pnum_iov)
3090 uint8_t *first_hdr = buf;
3091 size_t verified_buflen = 0;
3095 iov = talloc_array(mem_ctx, struct iovec, num_iov);
3097 return NT_STATUS_NO_MEMORY;
3100 while (taken < buflen) {
3101 size_t len = buflen - taken;
3102 uint8_t *hdr = first_hdr + taken;
3105 size_t next_command_ofs;
3107 struct iovec *iov_tmp;
3109 if (verified_buflen > taken) {
3110 len = verified_buflen - taken;
3117 DEBUG(10, ("%d bytes left, expected at least %d\n",
3121 if (IVAL(hdr, 0) == SMB2_TF_MAGIC) {
3122 struct smbXcli_session *s;
3124 struct iovec tf_iov[2];
3128 if (len < SMB2_TF_HDR_SIZE) {
3129 DEBUG(10, ("%d bytes left, expected at least %d\n",
3130 (int)len, SMB2_TF_HDR_SIZE));
3134 tf_len = SMB2_TF_HDR_SIZE;
3137 hdr = first_hdr + taken;
3138 enc_len = IVAL(tf, SMB2_TF_MSG_SIZE);
3139 uid = BVAL(tf, SMB2_TF_SESSION_ID);
3141 if (len < SMB2_TF_HDR_SIZE + enc_len) {
3142 DEBUG(10, ("%d bytes left, expected at least %d\n",
3144 (int)(SMB2_TF_HDR_SIZE + enc_len)));
3149 for (; s; s = s->next) {
3150 if (s->smb2->session_id != uid) {
3157 DEBUG(10, ("unknown session_id %llu\n",
3158 (unsigned long long)uid));
3162 tf_iov[0].iov_base = (void *)tf;
3163 tf_iov[0].iov_len = tf_len;
3164 tf_iov[1].iov_base = (void *)hdr;
3165 tf_iov[1].iov_len = enc_len;
3167 status = smb2_signing_decrypt_pdu(s->smb2->decryption_key,
3170 if (!NT_STATUS_IS_OK(status)) {
3175 verified_buflen = taken + enc_len;
3180 * We need the header plus the body length field
3183 if (len < SMB2_HDR_BODY + 2) {
3184 DEBUG(10, ("%d bytes left, expected at least %d\n",
3185 (int)len, SMB2_HDR_BODY));
3188 if (IVAL(hdr, 0) != SMB2_MAGIC) {
3189 DEBUG(10, ("Got non-SMB2 PDU: %x\n",
3193 if (SVAL(hdr, 4) != SMB2_HDR_BODY) {
3194 DEBUG(10, ("Got HDR len %d, expected %d\n",
3195 SVAL(hdr, 4), SMB2_HDR_BODY));
3200 next_command_ofs = IVAL(hdr, SMB2_HDR_NEXT_COMMAND);
3201 body_size = SVAL(hdr, SMB2_HDR_BODY);
3203 if (next_command_ofs != 0) {
3204 if (next_command_ofs < (SMB2_HDR_BODY + 2)) {
3207 if (next_command_ofs > full_size) {
3210 full_size = next_command_ofs;
3212 if (body_size < 2) {
3215 body_size &= 0xfffe;
3217 if (body_size > (full_size - SMB2_HDR_BODY)) {
3221 iov_tmp = talloc_realloc(mem_ctx, iov, struct iovec,
3223 if (iov_tmp == NULL) {
3225 return NT_STATUS_NO_MEMORY;
3228 cur = &iov[num_iov];
3231 cur[0].iov_base = tf;
3232 cur[0].iov_len = tf_len;
3233 cur[1].iov_base = hdr;
3234 cur[1].iov_len = SMB2_HDR_BODY;
3235 cur[2].iov_base = hdr + SMB2_HDR_BODY;
3236 cur[2].iov_len = body_size;
3237 cur[3].iov_base = hdr + SMB2_HDR_BODY + body_size;
3238 cur[3].iov_len = full_size - (SMB2_HDR_BODY + body_size);
3244 *pnum_iov = num_iov;
3245 return NT_STATUS_OK;
3249 return NT_STATUS_INVALID_NETWORK_RESPONSE;
3252 static struct tevent_req *smb2cli_conn_find_pending(struct smbXcli_conn *conn,
3255 size_t num_pending = talloc_array_length(conn->pending);
3258 for (i=0; i<num_pending; i++) {
3259 struct tevent_req *req = conn->pending[i];
3260 struct smbXcli_req_state *state =
3261 tevent_req_data(req,
3262 struct smbXcli_req_state);
3264 if (mid == BVAL(state->smb2.hdr, SMB2_HDR_MESSAGE_ID)) {
3271 static NTSTATUS smb2cli_conn_dispatch_incoming(struct smbXcli_conn *conn,
3272 TALLOC_CTX *tmp_mem,
3275 struct tevent_req *req;
3276 struct smbXcli_req_state *state = NULL;
3281 struct smbXcli_session *last_session = NULL;
3282 size_t inbuf_len = smb_len_tcp(inbuf);
3284 status = smb2cli_inbuf_parse_compound(conn,
3285 inbuf + NBT_HDR_SIZE,
3289 if (!NT_STATUS_IS_OK(status)) {
3293 for (i=0; i<num_iov; i+=4) {
3294 uint8_t *inbuf_ref = NULL;
3295 struct iovec *cur = &iov[i];
3296 uint8_t *inhdr = (uint8_t *)cur[1].iov_base;
3297 uint16_t opcode = SVAL(inhdr, SMB2_HDR_OPCODE);
3298 uint32_t flags = IVAL(inhdr, SMB2_HDR_FLAGS);
3299 uint64_t mid = BVAL(inhdr, SMB2_HDR_MESSAGE_ID);
3300 uint16_t req_opcode;
3302 uint16_t credits = SVAL(inhdr, SMB2_HDR_CREDIT);
3303 uint32_t new_credits;
3304 struct smbXcli_session *session = NULL;
3305 const DATA_BLOB *signing_key = NULL;
3306 bool was_encrypted = false;
3308 new_credits = conn->smb2.cur_credits;
3309 new_credits += credits;
3310 if (new_credits > UINT16_MAX) {
3311 return NT_STATUS_INVALID_NETWORK_RESPONSE;
3313 conn->smb2.cur_credits += credits;
3315 req = smb2cli_conn_find_pending(conn, mid);
3317 return NT_STATUS_INVALID_NETWORK_RESPONSE;
3319 state = tevent_req_data(req, struct smbXcli_req_state);
3321 state->smb2.got_async = false;
3323 req_opcode = SVAL(state->smb2.hdr, SMB2_HDR_OPCODE);
3324 if (opcode != req_opcode) {
3325 return NT_STATUS_INVALID_NETWORK_RESPONSE;
3327 req_flags = SVAL(state->smb2.hdr, SMB2_HDR_FLAGS);
3329 if (!(flags & SMB2_HDR_FLAG_REDIRECT)) {
3330 return NT_STATUS_INVALID_NETWORK_RESPONSE;
3333 status = NT_STATUS(IVAL(inhdr, SMB2_HDR_STATUS));
3334 if ((flags & SMB2_HDR_FLAG_ASYNC) &&
3335 NT_STATUS_EQUAL(status, STATUS_PENDING)) {
3336 uint64_t async_id = BVAL(inhdr, SMB2_HDR_ASYNC_ID);
3339 * async interim responses are not signed,
3340 * even if the SMB2_HDR_FLAG_SIGNED flag
3343 req_flags |= SMB2_HDR_FLAG_ASYNC;
3344 SBVAL(state->smb2.hdr, SMB2_HDR_FLAGS, req_flags);
3345 SBVAL(state->smb2.hdr, SMB2_HDR_ASYNC_ID, async_id);
3347 if (state->smb2.notify_async) {
3348 state->smb2.got_async = true;
3349 tevent_req_defer_callback(req, state->ev);
3350 tevent_req_notify_callback(req);
3355 session = state->session;
3356 if (req_flags & SMB2_HDR_FLAG_CHAINED) {
3357 session = last_session;
3359 last_session = session;
3361 if (state->smb2.should_sign) {
3362 if (!(flags & SMB2_HDR_FLAG_SIGNED)) {
3363 return NT_STATUS_ACCESS_DENIED;
3367 if (flags & SMB2_HDR_FLAG_SIGNED) {
3368 uint64_t uid = BVAL(inhdr, SMB2_HDR_SESSION_ID);
3370 if (session == NULL) {
3371 struct smbXcli_session *s;
3373 s = state->conn->sessions;
3374 for (; s; s = s->next) {
3375 if (s->smb2->session_id != uid) {
3384 if (session == NULL) {
3385 return NT_STATUS_INVALID_NETWORK_RESPONSE;
3388 last_session = session;
3389 signing_key = &session->smb2_channel.signing_key;
3392 if (opcode == SMB2_OP_SESSSETUP) {
3394 * We prefer the channel signing key, if it is
3397 * If we do not have a channel signing key yet,
3398 * we try the main signing key, if it is not
3399 * the final response.
3401 if (signing_key && signing_key->length == 0 &&
3402 !NT_STATUS_IS_OK(status)) {
3403 signing_key = &session->smb2->signing_key;
3406 if (signing_key && signing_key->length == 0) {
3408 * If we do not have a session key to
3409 * verify the signature, we defer the
3410 * signing check to the caller.
3412 * The caller gets NT_STATUS_OK, it
3414 * smb2cli_session_set_session_key()
3416 * smb2cli_session_set_channel_key()
3417 * which will check the signature
3418 * with the channel signing key.
3424 if (cur[0].iov_len == SMB2_TF_HDR_SIZE) {
3425 const uint8_t *tf = (const uint8_t *)cur[0].iov_base;
3426 uint64_t uid = BVAL(tf, SMB2_TF_SESSION_ID);
3429 * If the response was encrypted in a SMB2_TRANSFORM
3430 * pdu, which belongs to the correct session,
3431 * we do not need to do signing checks
3433 * It could be the session the response belongs to
3434 * or the session that was used to encrypt the
3435 * SMB2_TRANSFORM request.
3437 if ((session && session->smb2->session_id == uid) ||
3438 (state->smb2.encryption_session_id == uid)) {
3440 was_encrypted = true;
3444 if (NT_STATUS_EQUAL(status, NT_STATUS_USER_SESSION_DELETED)) {
3446 * if the server returns NT_STATUS_USER_SESSION_DELETED
3447 * the response is not signed and we should
3448 * propagate the NT_STATUS_USER_SESSION_DELETED
3449 * status to the caller.
3451 state->smb2.signing_skipped = true;
3455 if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_PARAMETER)) {
3457 * if the server returns
3458 * NT_STATUS_INVALID_PARAMETER
3459 * the response might not be encrypted.
3461 if (state->smb2.should_encrypt && !was_encrypted) {
3462 state->smb2.signing_skipped = true;
3467 if (state->smb2.should_encrypt && !was_encrypted) {
3468 if (!state->smb2.signing_skipped) {
3469 return NT_STATUS_ACCESS_DENIED;
3473 if (NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_NAME_DELETED) ||
3474 NT_STATUS_EQUAL(status, NT_STATUS_FILE_CLOSED) ||
3475 NT_STATUS_EQUAL(status, NT_STATUS_INVALID_PARAMETER)) {
3477 * if the server returns
3478 * NT_STATUS_NETWORK_NAME_DELETED
3479 * NT_STATUS_FILE_CLOSED
3480 * NT_STATUS_INVALID_PARAMETER
3481 * the response might not be signed
3482 * as this happens before the signing checks.
3484 * If server echos the signature (or all zeros)
3485 * we should report the status from the server
3491 cmp = memcmp(inhdr+SMB2_HDR_SIGNATURE,
3492 state->smb2.hdr+SMB2_HDR_SIGNATURE,
3495 state->smb2.signing_skipped = true;
3501 static const uint8_t zeros[16];
3503 cmp = memcmp(inhdr+SMB2_HDR_SIGNATURE,
3507 state->smb2.signing_skipped = true;
3514 status = smb2_signing_check_pdu(*signing_key,
3515 state->conn->protocol,
3517 if (!NT_STATUS_IS_OK(status)) {
3519 * If the signing check fails, we disconnect
3526 if (NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_SESSION_EXPIRED) &&
3527 (session != NULL) && session->disconnect_expired)
3530 * this should be a short term hack
3531 * until the upper layers have implemented
3532 * re-authentication.
3537 smbXcli_req_unset_pending(req);
3540 * There might be more than one response
3541 * we need to defer the notifications
3543 if ((num_iov == 5) && (talloc_array_length(conn->pending) == 0)) {
3548 tevent_req_defer_callback(req, state->ev);
3552 * Note: here we use talloc_reference() in a way
3553 * that does not expose it to the caller.
3555 inbuf_ref = talloc_reference(state->smb2.recv_iov, inbuf);
3556 if (tevent_req_nomem(inbuf_ref, req)) {
3560 /* copy the related buffers */
3561 state->smb2.recv_iov[0] = cur[1];
3562 state->smb2.recv_iov[1] = cur[2];
3563 state->smb2.recv_iov[2] = cur[3];
3565 tevent_req_done(req);
3569 return NT_STATUS_RETRY;
3572 return NT_STATUS_OK;
3575 NTSTATUS smb2cli_req_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
3576 struct iovec **piov,
3577 const struct smb2cli_req_expected_response *expected,
3578 size_t num_expected)
3580 struct smbXcli_req_state *state =
3581 tevent_req_data(req,
3582 struct smbXcli_req_state);
3585 bool found_status = false;
3586 bool found_size = false;
3593 if (state->smb2.got_async) {
3594 return STATUS_PENDING;
3597 if (tevent_req_is_nterror(req, &status)) {
3598 for (i=0; i < num_expected; i++) {
3599 if (NT_STATUS_EQUAL(status, expected[i].status)) {
3600 found_status = true;
3606 return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
3612 if (num_expected == 0) {
3613 found_status = true;
3617 status = NT_STATUS(IVAL(state->smb2.recv_iov[0].iov_base, SMB2_HDR_STATUS));
3618 body_size = SVAL(state->smb2.recv_iov[1].iov_base, 0);
3620 for (i=0; i < num_expected; i++) {
3621 if (!NT_STATUS_EQUAL(status, expected[i].status)) {
3625 found_status = true;
3626 if (expected[i].body_size == 0) {
3631 if (expected[i].body_size == body_size) {
3637 if (!found_status) {
3641 if (state->smb2.signing_skipped) {
3642 if (num_expected > 0) {
3643 return NT_STATUS_ACCESS_DENIED;
3645 if (!NT_STATUS_IS_ERR(status)) {
3646 return NT_STATUS_ACCESS_DENIED;
3651 return NT_STATUS_INVALID_NETWORK_RESPONSE;
3655 *piov = talloc_move(mem_ctx, &state->smb2.recv_iov);
3661 static const struct {
3662 enum protocol_types proto;
3663 const char *smb1_name;
3664 } smb1cli_prots[] = {
3665 {PROTOCOL_CORE, "PC NETWORK PROGRAM 1.0"},
3666 {PROTOCOL_COREPLUS, "MICROSOFT NETWORKS 1.03"},
3667 {PROTOCOL_LANMAN1, "MICROSOFT NETWORKS 3.0"},
3668 {PROTOCOL_LANMAN1, "LANMAN1.0"},
3669 {PROTOCOL_LANMAN2, "LM1.2X002"},
3670 {PROTOCOL_LANMAN2, "DOS LANMAN2.1"},
3671 {PROTOCOL_LANMAN2, "LANMAN2.1"},
3672 {PROTOCOL_LANMAN2, "Samba"},
3673 {PROTOCOL_NT1, "NT LANMAN 1.0"},
3674 {PROTOCOL_NT1, "NT LM 0.12"},
3675 {PROTOCOL_SMB2_02, "SMB 2.002"},
3676 {PROTOCOL_SMB2_10, "SMB 2.???"},
3679 static const struct {
3680 enum protocol_types proto;
3681 uint16_t smb2_dialect;
3682 } smb2cli_prots[] = {
3683 {PROTOCOL_SMB2_02, SMB2_DIALECT_REVISION_202},
3684 {PROTOCOL_SMB2_10, SMB2_DIALECT_REVISION_210},
3685 {PROTOCOL_SMB2_22, SMB2_DIALECT_REVISION_222},
3686 {PROTOCOL_SMB2_24, SMB2_DIALECT_REVISION_224},
3687 {PROTOCOL_SMB3_00, SMB3_DIALECT_REVISION_300},
3688 {PROTOCOL_SMB3_02, SMB3_DIALECT_REVISION_302},
3691 struct smbXcli_negprot_state {
3692 struct smbXcli_conn *conn;
3693 struct tevent_context *ev;
3694 uint32_t timeout_msec;
3695 enum protocol_types min_protocol;
3696 enum protocol_types max_protocol;
3700 uint8_t dyn[ARRAY_SIZE(smb2cli_prots)*2];
3704 static void smbXcli_negprot_invalid_done(struct tevent_req *subreq);
3705 static struct tevent_req *smbXcli_negprot_smb1_subreq(struct smbXcli_negprot_state *state);
3706 static void smbXcli_negprot_smb1_done(struct tevent_req *subreq);
3707 static struct tevent_req *smbXcli_negprot_smb2_subreq(struct smbXcli_negprot_state *state);
3708 static void smbXcli_negprot_smb2_done(struct tevent_req *subreq);
3709 static NTSTATUS smbXcli_negprot_dispatch_incoming(struct smbXcli_conn *conn,
3713 struct tevent_req *smbXcli_negprot_send(TALLOC_CTX *mem_ctx,
3714 struct tevent_context *ev,
3715 struct smbXcli_conn *conn,
3716 uint32_t timeout_msec,
3717 enum protocol_types min_protocol,
3718 enum protocol_types max_protocol)
3720 struct tevent_req *req, *subreq;
3721 struct smbXcli_negprot_state *state;
3723 req = tevent_req_create(mem_ctx, &state,
3724 struct smbXcli_negprot_state);
3730 state->timeout_msec = timeout_msec;
3731 state->min_protocol = min_protocol;
3732 state->max_protocol = max_protocol;
3734 if (min_protocol == PROTOCOL_NONE) {
3735 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER_MIX);
3736 return tevent_req_post(req, ev);
3739 if (max_protocol == PROTOCOL_NONE) {
3740 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER_MIX);
3741 return tevent_req_post(req, ev);
3744 if (min_protocol > max_protocol) {
3745 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER_MIX);
3746 return tevent_req_post(req, ev);
3749 if ((min_protocol < PROTOCOL_SMB2_02) &&
3750 (max_protocol < PROTOCOL_SMB2_02)) {
3754 conn->dispatch_incoming = smb1cli_conn_dispatch_incoming;
3756 subreq = smbXcli_negprot_smb1_subreq(state);
3757 if (tevent_req_nomem(subreq, req)) {
3758 return tevent_req_post(req, ev);
3760 tevent_req_set_callback(subreq, smbXcli_negprot_smb1_done, req);
3764 if ((min_protocol >= PROTOCOL_SMB2_02) &&
3765 (max_protocol >= PROTOCOL_SMB2_02)) {
3769 conn->dispatch_incoming = smb2cli_conn_dispatch_incoming;
3771 subreq = smbXcli_negprot_smb2_subreq(state);
3772 if (tevent_req_nomem(subreq, req)) {
3773 return tevent_req_post(req, ev);
3775 tevent_req_set_callback(subreq, smbXcli_negprot_smb2_done, req);
3780 * We send an SMB1 negprot with the SMB2 dialects
3781 * and expect a SMB1 or a SMB2 response.
3783 * smbXcli_negprot_dispatch_incoming() will fix the
3784 * callback to match protocol of the response.
3786 conn->dispatch_incoming = smbXcli_negprot_dispatch_incoming;
3788 subreq = smbXcli_negprot_smb1_subreq(state);
3789 if (tevent_req_nomem(subreq, req)) {
3790 return tevent_req_post(req, ev);
3792 tevent_req_set_callback(subreq, smbXcli_negprot_invalid_done, req);
3796 static void smbXcli_negprot_invalid_done(struct tevent_req *subreq)
3798 struct tevent_req *req =
3799 tevent_req_callback_data(subreq,
3804 * we just want the low level error
3806 status = tevent_req_simple_recv_ntstatus(subreq);
3807 TALLOC_FREE(subreq);
3808 if (tevent_req_nterror(req, status)) {
3812 /* this should never happen */
3813 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
3816 static struct tevent_req *smbXcli_negprot_smb1_subreq(struct smbXcli_negprot_state *state)
3819 DATA_BLOB bytes = data_blob_null;
3823 /* setup the protocol strings */
3824 for (i=0; i < ARRAY_SIZE(smb1cli_prots); i++) {
3828 if (smb1cli_prots[i].proto < state->min_protocol) {
3832 if (smb1cli_prots[i].proto > state->max_protocol) {
3836 ok = data_blob_append(state, &bytes, &c, sizeof(c));
3842 * We now it is already ascii and
3843 * we want NULL termination.
3845 ok = data_blob_append(state, &bytes,
3846 smb1cli_prots[i].smb1_name,
3847 strlen(smb1cli_prots[i].smb1_name)+1);
3853 smb1cli_req_flags(state->max_protocol,
3854 state->conn->smb1.client.capabilities,
3859 return smb1cli_req_send(state, state->ev, state->conn,
3863 state->timeout_msec,
3864 0xFFFE, 0, NULL, /* pid, tid, session */
3865 0, NULL, /* wct, vwv */
3866 bytes.length, bytes.data);
3869 static void smbXcli_negprot_smb1_done(struct tevent_req *subreq)
3871 struct tevent_req *req =
3872 tevent_req_callback_data(subreq,
3874 struct smbXcli_negprot_state *state =
3875 tevent_req_data(req,
3876 struct smbXcli_negprot_state);
3877 struct smbXcli_conn *conn = state->conn;
3878 struct iovec *recv_iov = NULL;
3887 size_t num_prots = 0;
3889 uint32_t client_capabilities = conn->smb1.client.capabilities;
3890 uint32_t both_capabilities;
3891 uint32_t server_capabilities = 0;
3892 uint32_t capabilities;
3893 uint32_t client_max_xmit = conn->smb1.client.max_xmit;
3894 uint32_t server_max_xmit = 0;
3896 uint32_t server_max_mux = 0;
3897 uint16_t server_security_mode = 0;
3898 uint32_t server_session_key = 0;
3899 bool server_readbraw = false;
3900 bool server_writebraw = false;
3901 bool server_lockread = false;
3902 bool server_writeunlock = false;
3903 struct GUID server_guid = GUID_zero();
3904 DATA_BLOB server_gss_blob = data_blob_null;
3905 uint8_t server_challenge[8];
3906 char *server_workgroup = NULL;
3907 char *server_name = NULL;
3908 int server_time_zone = 0;
3909 NTTIME server_system_time = 0;
3910 static const struct smb1cli_req_expected_response expected[] = {
3912 .status = NT_STATUS_OK,
3913 .wct = 0x11, /* NT1 */
3916 .status = NT_STATUS_OK,
3917 .wct = 0x0D, /* LM */
3920 .status = NT_STATUS_OK,
3921 .wct = 0x01, /* CORE */
3925 ZERO_STRUCT(server_challenge);
3927 status = smb1cli_req_recv(subreq, state,
3932 NULL, /* pvwv_offset */
3935 NULL, /* pbytes_offset */
3937 expected, ARRAY_SIZE(expected));
3938 TALLOC_FREE(subreq);
3939 if (tevent_req_nterror(req, status)) {
3943 flags = CVAL(inhdr, HDR_FLG);
3945 protnum = SVAL(vwv, 0);
3947 for (i=0; i < ARRAY_SIZE(smb1cli_prots); i++) {
3948 if (smb1cli_prots[i].proto < state->min_protocol) {
3952 if (smb1cli_prots[i].proto > state->max_protocol) {
3956 if (protnum != num_prots) {
3961 conn->protocol = smb1cli_prots[i].proto;
3965 if (conn->protocol == PROTOCOL_NONE) {
3966 tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
3970 if ((conn->protocol < PROTOCOL_NT1) && conn->mandatory_signing) {
3971 DEBUG(0,("smbXcli_negprot: SMB signing is mandatory "
3972 "and the selected protocol level doesn't support it.\n"));
3973 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
3977 if (flags & FLAG_SUPPORT_LOCKREAD) {
3978 server_lockread = true;
3979 server_writeunlock = true;
3982 if (conn->protocol >= PROTOCOL_NT1) {
3983 const char *client_signing = NULL;
3984 bool server_mandatory = false;
3985 bool server_allowed = false;
3986 const char *server_signing = NULL;
3991 tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
3996 server_security_mode = CVAL(vwv + 1, 0);
3997 server_max_mux = SVAL(vwv + 1, 1);
3998 server_max_xmit = IVAL(vwv + 3, 1);
3999 server_session_key = IVAL(vwv + 7, 1);
4000 server_time_zone = SVALS(vwv + 15, 1);
4001 server_time_zone *= 60;
4002 /* this time arrives in real GMT */
4003 server_system_time = BVAL(vwv + 11, 1);
4004 server_capabilities = IVAL(vwv + 9, 1);
4006 key_len = CVAL(vwv + 16, 1);
4008 if (server_capabilities & CAP_RAW_MODE) {
4009 server_readbraw = true;
4010 server_writebraw = true;
4012 if (server_capabilities & CAP_LOCK_AND_READ) {
4013 server_lockread = true;
4016 if (server_capabilities & CAP_EXTENDED_SECURITY) {
4017 DATA_BLOB blob1, blob2;
4019 if (num_bytes < 16) {
4020 tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
4024 blob1 = data_blob_const(bytes, 16);
4025 status = GUID_from_data_blob(&blob1, &server_guid);
4026 if (tevent_req_nterror(req, status)) {
4030 blob1 = data_blob_const(bytes+16, num_bytes-16);
4031 blob2 = data_blob_dup_talloc(state, blob1);
4032 if (blob1.length > 0 &&
4033 tevent_req_nomem(blob2.data, req)) {
4036 server_gss_blob = blob2;
4038 DATA_BLOB blob1, blob2;
4040 if (num_bytes < key_len) {
4041 tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
4045 if (key_len != 0 && key_len != 8) {
4046 tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
4051 memcpy(server_challenge, bytes, 8);
4054 blob1 = data_blob_const(bytes+key_len, num_bytes-key_len);
4055 blob2 = data_blob_const(bytes+key_len, num_bytes-key_len);
4056 if (blob1.length > 0) {
4059 len = utf16_len_n(blob1.data,
4063 ok = convert_string_talloc(state,
4071 status = map_nt_error_from_unix_common(errno);
4072 tevent_req_nterror(req, status);
4077 blob2.data += blob1.length;
4078 blob2.length -= blob1.length;
4079 if (blob2.length > 0) {
4082 len = utf16_len_n(blob1.data,
4086 ok = convert_string_talloc(state,
4094 status = map_nt_error_from_unix_common(errno);
4095 tevent_req_nterror(req, status);
4101 client_signing = "disabled";
4102 if (conn->allow_signing) {
4103 client_signing = "allowed";
4105 if (conn->mandatory_signing) {
4106 client_signing = "required";
4109 server_signing = "not supported";
4110 if (server_security_mode & NEGOTIATE_SECURITY_SIGNATURES_ENABLED) {
4111 server_signing = "supported";
4112 server_allowed = true;
4113 } else if (conn->mandatory_signing) {
4115 * We have mandatory signing as client
4116 * lets assume the server will look at our
4117 * FLAGS2_SMB_SECURITY_SIGNATURES_REQUIRED
4118 * flag in the session setup
4120 server_signing = "not announced";
4121 server_allowed = true;
4123 if (server_security_mode & NEGOTIATE_SECURITY_SIGNATURES_REQUIRED) {
4124 server_signing = "required";
4125 server_mandatory = true;
4128 ok = smb_signing_set_negotiated(conn->smb1.signing,
4132 DEBUG(1,("cli_negprot: SMB signing is required, "
4133 "but client[%s] and server[%s] mismatch\n",
4134 client_signing, server_signing));
4135 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
4139 } else if (conn->protocol >= PROTOCOL_LANMAN1) {
4145 tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
4149 server_security_mode = SVAL(vwv + 1, 0);
4150 server_max_xmit = SVAL(vwv + 2, 0);
4151 server_max_mux = SVAL(vwv + 3, 0);
4152 server_readbraw = ((SVAL(vwv + 5, 0) & 0x1) != 0);
4153 server_writebraw = ((SVAL(vwv + 5, 0) & 0x2) != 0);
4154 server_session_key = IVAL(vwv + 6, 0);
4155 server_time_zone = SVALS(vwv + 10, 0);
4156 server_time_zone *= 60;
4157 /* this time is converted to GMT by make_unix_date */
4158 t = pull_dos_date((const uint8_t *)(vwv + 8), server_time_zone);
4159 unix_to_nt_time(&server_system_time, t);
4160 key_len = SVAL(vwv + 11, 0);
4162 if (num_bytes < key_len) {
4163 tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
4167 if (key_len != 0 && key_len != 8) {
4168 tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
4173 memcpy(server_challenge, bytes, 8);
4176 blob1 = data_blob_const(bytes+key_len, num_bytes-key_len);
4177 if (blob1.length > 0) {
4181 len = utf16_len_n(blob1.data,
4185 ok = convert_string_talloc(state,
4193 status = map_nt_error_from_unix_common(errno);
4194 tevent_req_nterror(req, status);
4200 /* the old core protocol */
4201 server_time_zone = get_time_zone(time(NULL));
4202 server_max_xmit = 1024;
4206 if (server_max_xmit < 1024) {
4207 tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
4211 if (server_max_mux < 1) {
4212 tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
4217 * Now calculate the negotiated capabilities
4218 * based on the mask for:
4219 * - client only flags
4220 * - flags used in both directions
4221 * - server only flags
4223 both_capabilities = client_capabilities & server_capabilities;
4224 capabilities = client_capabilities & SMB_CAP_CLIENT_MASK;
4225 capabilities |= both_capabilities & SMB_CAP_BOTH_MASK;
4226 capabilities |= server_capabilities & SMB_CAP_SERVER_MASK;
4228 max_xmit = MIN(client_max_xmit, server_max_xmit);
4230 conn->smb1.server.capabilities = server_capabilities;
4231 conn->smb1.capabilities = capabilities;
4233 conn->smb1.server.max_xmit = server_max_xmit;
4234 conn->smb1.max_xmit = max_xmit;
4236 conn->smb1.server.max_mux = server_max_mux;
4238 conn->smb1.server.security_mode = server_security_mode;
4240 conn->smb1.server.readbraw = server_readbraw;
4241 conn->smb1.server.writebraw = server_writebraw;
4242 conn->smb1.server.lockread = server_lockread;
4243 conn->smb1.server.writeunlock = server_writeunlock;
4245 conn->smb1.server.session_key = server_session_key;
4247 talloc_steal(conn, server_gss_blob.data);
4248 conn->smb1.server.gss_blob = server_gss_blob;
4249 conn->smb1.server.guid = server_guid;
4250 memcpy(conn->smb1.server.challenge, server_challenge, 8);
4251 conn->smb1.server.workgroup = talloc_move(conn, &server_workgroup);
4252 conn->smb1.server.name = talloc_move(conn, &server_name);
4254 conn->smb1.server.time_zone = server_time_zone;
4255 conn->smb1.server.system_time = server_system_time;
4257 tevent_req_done(req);
4260 static struct tevent_req *smbXcli_negprot_smb2_subreq(struct smbXcli_negprot_state *state)
4264 uint16_t dialect_count = 0;
4266 buf = state->smb2.dyn;
4267 for (i=0; i < ARRAY_SIZE(smb2cli_prots); i++) {
4268 if (smb2cli_prots[i].proto < state->min_protocol) {
4272 if (smb2cli_prots[i].proto > state->max_protocol) {
4276 SSVAL(buf, dialect_count*2, smb2cli_prots[i].smb2_dialect);
4280 buf = state->smb2.fixed;
4282 SSVAL(buf, 2, dialect_count);
4283 SSVAL(buf, 4, state->conn->smb2.client.security_mode);
4284 SSVAL(buf, 6, 0); /* Reserved */
4285 if (state->max_protocol >= PROTOCOL_SMB2_22) {
4286 SIVAL(buf, 8, state->conn->smb2.client.capabilities);
4288 SIVAL(buf, 8, 0); /* Capabilities */
4290 if (state->max_protocol >= PROTOCOL_SMB2_10) {
4294 status = GUID_to_ndr_blob(&state->conn->smb2.client.guid,
4296 if (!NT_STATUS_IS_OK(status)) {
4299 memcpy(buf+12, blob.data, 16); /* ClientGuid */
4301 memset(buf+12, 0, 16); /* ClientGuid */
4303 SBVAL(buf, 28, 0); /* ClientStartTime */
4305 return smb2cli_req_send(state, state->ev,
4306 state->conn, SMB2_OP_NEGPROT,
4308 state->timeout_msec,
4309 NULL, NULL, /* tcon, session */
4310 state->smb2.fixed, sizeof(state->smb2.fixed),
4311 state->smb2.dyn, dialect_count*2,
4312 UINT16_MAX); /* max_dyn_len */
4315 static void smbXcli_negprot_smb2_done(struct tevent_req *subreq)
4317 struct tevent_req *req =
4318 tevent_req_callback_data(subreq,
4320 struct smbXcli_negprot_state *state =
4321 tevent_req_data(req,
4322 struct smbXcli_negprot_state);
4323 struct smbXcli_conn *conn = state->conn;
4324 size_t security_offset, security_length;
4330 uint16_t dialect_revision;
4331 static const struct smb2cli_req_expected_response expected[] = {
4333 .status = NT_STATUS_OK,
4338 status = smb2cli_req_recv(subreq, state, &iov,
4339 expected, ARRAY_SIZE(expected));
4340 TALLOC_FREE(subreq);
4341 if (tevent_req_nterror(req, status)) {
4345 body = (uint8_t *)iov[1].iov_base;
4347 dialect_revision = SVAL(body, 4);
4349 for (i=0; i < ARRAY_SIZE(smb2cli_prots); i++) {
4350 if (smb2cli_prots[i].proto < state->min_protocol) {
4354 if (smb2cli_prots[i].proto > state->max_protocol) {
4358 if (smb2cli_prots[i].smb2_dialect != dialect_revision) {
4362 conn->protocol = smb2cli_prots[i].proto;
4366 if (conn->protocol == PROTOCOL_NONE) {
4367 if (state->min_protocol >= PROTOCOL_SMB2_02) {
4368 tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
4372 if (dialect_revision != SMB2_DIALECT_REVISION_2FF) {
4373 tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
4377 /* make sure we do not loop forever */
4378 state->min_protocol = PROTOCOL_SMB2_02;
4381 * send a SMB2 negprot, in order to negotiate
4384 subreq = smbXcli_negprot_smb2_subreq(state);
4385 if (tevent_req_nomem(subreq, req)) {
4388 tevent_req_set_callback(subreq, smbXcli_negprot_smb2_done, req);
4392 conn->smb2.server.security_mode = SVAL(body, 2);
4394 blob = data_blob_const(body + 8, 16);
4395 status = GUID_from_data_blob(&blob, &conn->smb2.server.guid);
4396 if (tevent_req_nterror(req, status)) {
4400 conn->smb2.server.capabilities = IVAL(body, 24);
4401 conn->smb2.server.max_trans_size= IVAL(body, 28);
4402 conn->smb2.server.max_read_size = IVAL(body, 32);
4403 conn->smb2.server.max_write_size= IVAL(body, 36);
4404 conn->smb2.server.system_time = BVAL(body, 40);
4405 conn->smb2.server.start_time = BVAL(body, 48);
4407 security_offset = SVAL(body, 56);
4408 security_length = SVAL(body, 58);
4410 if (security_offset != SMB2_HDR_BODY + iov[1].iov_len) {
4411 tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
4415 if (security_length > iov[2].iov_len) {
4416 tevent_req_nterror(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
4420 conn->smb2.server.gss_blob = data_blob_talloc(conn,
4423 if (tevent_req_nomem(conn->smb2.server.gss_blob.data, req)) {
4427 tevent_req_done(req);
4430 static NTSTATUS smbXcli_negprot_dispatch_incoming(struct smbXcli_conn *conn,
4431 TALLOC_CTX *tmp_mem,
4434 size_t num_pending = talloc_array_length(conn->pending);
4435 struct tevent_req *subreq;
4436 struct smbXcli_req_state *substate;
4437 struct tevent_req *req;
4438 uint32_t protocol_magic;
4439 size_t inbuf_len = smb_len_nbt(inbuf);
4441 if (num_pending != 1) {
4442 return NT_STATUS_INTERNAL_ERROR;
4445 if (inbuf_len < 4) {
4446 return NT_STATUS_INVALID_NETWORK_RESPONSE;
4449 subreq = conn->pending[0];
4450 substate = tevent_req_data(subreq, struct smbXcli_req_state);
4451 req = tevent_req_callback_data(subreq, struct tevent_req);
4453 protocol_magic = IVAL(inbuf, 4);
4455 switch (protocol_magic) {
4457 tevent_req_set_callback(subreq, smbXcli_negprot_smb1_done, req);
4458 conn->dispatch_incoming = smb1cli_conn_dispatch_incoming;
4459 return smb1cli_conn_dispatch_incoming(conn, tmp_mem, inbuf);
4462 if (substate->smb2.recv_iov == NULL) {
4464 * For the SMB1 negprot we have move it.
4466 substate->smb2.recv_iov = substate->smb1.recv_iov;
4467 substate->smb1.recv_iov = NULL;
4471 * we got an SMB2 answer, which consumed sequence number 0
4472 * so we need to use 1 as the next one.
4474 * we also need to set the current credits to 0
4475 * as we consumed the initial one. The SMB2 answer
4476 * hopefully grant us a new credit.
4479 conn->smb2.cur_credits = 0;
4480 tevent_req_set_callback(subreq, smbXcli_negprot_smb2_done, req);
4481 conn->dispatch_incoming = smb2cli_conn_dispatch_incoming;
4482 return smb2cli_conn_dispatch_incoming(conn, tmp_mem, inbuf);
4485 DEBUG(10, ("Got non-SMB PDU\n"));
4486 return NT_STATUS_INVALID_NETWORK_RESPONSE;
4489 NTSTATUS smbXcli_negprot_recv(struct tevent_req *req)
4491 return tevent_req_simple_recv_ntstatus(req);
4494 NTSTATUS smbXcli_negprot(struct smbXcli_conn *conn,
4495 uint32_t timeout_msec,
4496 enum protocol_types min_protocol,
4497 enum protocol_types max_protocol)
4499 TALLOC_CTX *frame = talloc_stackframe();
4500 struct tevent_context *ev;
4501 struct tevent_req *req;
4502 NTSTATUS status = NT_STATUS_NO_MEMORY;
4505 if (smbXcli_conn_has_async_calls(conn)) {
4507 * Can't use sync call while an async call is in flight
4509 status = NT_STATUS_INVALID_PARAMETER_MIX;
4512 ev = samba_tevent_context_init(frame);
4516 req = smbXcli_negprot_send(frame, ev, conn, timeout_msec,
4517 min_protocol, max_protocol);
4521 ok = tevent_req_poll(req, ev);
4523 status = map_nt_error_from_unix_common(errno);
4526 status = smbXcli_negprot_recv(req);
4532 static int smbXcli_session_destructor(struct smbXcli_session *session)
4534 if (session->conn == NULL) {
4538 DLIST_REMOVE(session->conn->sessions, session);
4542 struct smbXcli_session *smbXcli_session_create(TALLOC_CTX *mem_ctx,
4543 struct smbXcli_conn *conn)
4545 struct smbXcli_session *session;
4547 session = talloc_zero(mem_ctx, struct smbXcli_session);
4548 if (session == NULL) {
4551 session->smb2 = talloc_zero(session, struct smb2cli_session);
4552 if (session->smb2 == NULL) {
4553 talloc_free(session);
4556 talloc_set_destructor(session, smbXcli_session_destructor);
4558 DLIST_ADD_END(conn->sessions, session, struct smbXcli_session *);
4559 session->conn = conn;
4564 struct smbXcli_session *smbXcli_session_copy(TALLOC_CTX *mem_ctx,
4565 struct smbXcli_session *src)
4567 struct smbXcli_session *session;
4569 session = talloc_zero(mem_ctx, struct smbXcli_session);
4570 if (session == NULL) {
4573 session->smb2 = talloc_zero(session, struct smb2cli_session);
4574 if (session->smb2 == NULL) {
4575 talloc_free(session);
4579 session->conn = src->conn;
4580 *session->smb2 = *src->smb2;
4581 session->smb2_channel = src->smb2_channel;
4582 session->disconnect_expired = src->disconnect_expired;
4584 DLIST_ADD_END(src->conn->sessions, session, struct smbXcli_session *);
4585 talloc_set_destructor(session, smbXcli_session_destructor);
4591 NTSTATUS smbXcli_session_application_key(struct smbXcli_session *session,
4592 TALLOC_CTX *mem_ctx,
4595 const DATA_BLOB *application_key;
4597 *key = data_blob_null;
4599 if (session->conn == NULL) {
4600 return NT_STATUS_NO_USER_SESSION_KEY;
4603 if (session->conn->protocol >= PROTOCOL_SMB2_02) {
4604 application_key = &session->smb2->application_key;
4606 application_key = &session->smb1.application_key;
4609 if (application_key->length == 0) {
4610 return NT_STATUS_NO_USER_SESSION_KEY;
4613 *key = data_blob_dup_talloc(mem_ctx, *application_key);
4614 if (key->data == NULL) {
4615 return NT_STATUS_NO_MEMORY;
4618 return NT_STATUS_OK;
4621 void smbXcli_session_set_disconnect_expired(struct smbXcli_session *session)
4623 session->disconnect_expired = true;
4626 uint16_t smb1cli_session_current_id(struct smbXcli_session *session)
4628 return session->smb1.session_id;
4631 void smb1cli_session_set_id(struct smbXcli_session *session,
4632 uint16_t session_id)
4634 session->smb1.session_id = session_id;
4637 NTSTATUS smb1cli_session_set_session_key(struct smbXcli_session *session,
4638 const DATA_BLOB _session_key)
4640 struct smbXcli_conn *conn = session->conn;
4641 uint8_t session_key[16];
4644 return NT_STATUS_INVALID_PARAMETER_MIX;
4647 if (session->smb1.application_key.length != 0) {
4649 * TODO: do not allow this...
4651 * return NT_STATUS_INVALID_PARAMETER_MIX;
4653 data_blob_clear_free(&session->smb1.application_key);
4654 session->smb1.protected_key = false;
4657 if (_session_key.length == 0) {
4658 return NT_STATUS_OK;
4661 ZERO_STRUCT(session_key);
4662 memcpy(session_key, _session_key.data,
4663 MIN(_session_key.length, sizeof(session_key)));
4665 session->smb1.application_key = data_blob_talloc(session,
4667 sizeof(session_key));
4668 ZERO_STRUCT(session_key);
4669 if (session->smb1.application_key.data == NULL) {
4670 return NT_STATUS_NO_MEMORY;
4673 session->smb1.protected_key = false;
4675 return NT_STATUS_OK;
4678 NTSTATUS smb1cli_session_protect_session_key(struct smbXcli_session *session)
4680 if (session->smb1.protected_key) {
4681 /* already protected */
4682 return NT_STATUS_OK;
4685 if (session->smb1.application_key.length != 16) {
4686 return NT_STATUS_INVALID_PARAMETER_MIX;
4689 smb_key_derivation(session->smb1.application_key.data,
4690 session->smb1.application_key.length,
4691 session->smb1.application_key.data);
4693 session->smb1.protected_key = true;
4695 return NT_STATUS_OK;
4698 uint8_t smb2cli_session_security_mode(struct smbXcli_session *session)
4700 struct smbXcli_conn *conn = session->conn;
4701 uint8_t security_mode = 0;
4704 return security_mode;
4707 security_mode = SMB2_NEGOTIATE_SIGNING_ENABLED;
4708 if (conn->mandatory_signing) {
4709 security_mode |= SMB2_NEGOTIATE_SIGNING_REQUIRED;
4712 return security_mode;
4715 uint64_t smb2cli_session_current_id(struct smbXcli_session *session)
4717 return session->smb2->session_id;
4720 uint16_t smb2cli_session_get_flags(struct smbXcli_session *session)
4722 return session->smb2->session_flags;
4725 void smb2cli_session_set_id_and_flags(struct smbXcli_session *session,
4726 uint64_t session_id,
4727 uint16_t session_flags)
4729 session->smb2->session_id = session_id;
4730 session->smb2->session_flags = session_flags;
4733 void smb2cli_session_increment_channel_sequence(struct smbXcli_session *session)
4735 session->smb2->channel_sequence += 1;
4738 NTSTATUS smb2cli_session_set_session_key(struct smbXcli_session *session,
4739 const DATA_BLOB _session_key,
4740 const struct iovec *recv_iov)
4742 struct smbXcli_conn *conn = session->conn;
4743 uint16_t no_sign_flags;
4744 uint8_t session_key[16];
4745 bool check_signature = true;
4750 return NT_STATUS_INVALID_PARAMETER_MIX;
4753 if (recv_iov[0].iov_len != SMB2_HDR_BODY) {
4754 return NT_STATUS_INVALID_PARAMETER_MIX;
4757 no_sign_flags = SMB2_SESSION_FLAG_IS_GUEST | SMB2_SESSION_FLAG_IS_NULL;
4759 if (session->smb2->session_flags & no_sign_flags) {
4760 session->smb2->should_sign = false;
4761 return NT_STATUS_OK;
4764 if (session->smb2->signing_key.length != 0) {
4765 return NT_STATUS_INVALID_PARAMETER_MIX;
4768 ZERO_STRUCT(session_key);
4769 memcpy(session_key, _session_key.data,
4770 MIN(_session_key.length, sizeof(session_key)));
4772 session->smb2->signing_key = data_blob_talloc(session,
4774 sizeof(session_key));
4775 if (session->smb2->signing_key.data == NULL) {
4776 ZERO_STRUCT(session_key);
4777 return NT_STATUS_NO_MEMORY;
4780 if (conn->protocol >= PROTOCOL_SMB2_24) {
4781 const DATA_BLOB label = data_blob_string_const_null("SMB2AESCMAC");
4782 const DATA_BLOB context = data_blob_string_const_null("SmbSign");
4784 smb2_key_derivation(session_key, sizeof(session_key),
4785 label.data, label.length,
4786 context.data, context.length,
4787 session->smb2->signing_key.data);
4790 session->smb2->encryption_key = data_blob_dup_talloc(session,
4791 session->smb2->signing_key);
4792 if (session->smb2->encryption_key.data == NULL) {
4793 ZERO_STRUCT(session_key);
4794 return NT_STATUS_NO_MEMORY;
4797 if (conn->protocol >= PROTOCOL_SMB2_24) {
4798 const DATA_BLOB label = data_blob_string_const_null("SMB2AESCCM");
4799 const DATA_BLOB context = data_blob_string_const_null("ServerIn ");
4801 smb2_key_derivation(session_key, sizeof(session_key),
4802 label.data, label.length,
4803 context.data, context.length,
4804 session->smb2->encryption_key.data);
4807 session->smb2->decryption_key = data_blob_dup_talloc(session,
4808 session->smb2->signing_key);
4809 if (session->smb2->decryption_key.data == NULL) {
4810 ZERO_STRUCT(session_key);
4811 return NT_STATUS_NO_MEMORY;
4814 if (conn->protocol >= PROTOCOL_SMB2_24) {
4815 const DATA_BLOB label = data_blob_string_const_null("SMB2AESCCM");
4816 const DATA_BLOB context = data_blob_string_const_null("ServerOut");
4818 smb2_key_derivation(session_key, sizeof(session_key),
4819 label.data, label.length,
4820 context.data, context.length,
4821 session->smb2->decryption_key.data);
4824 session->smb2->application_key = data_blob_dup_talloc(session,
4825 session->smb2->signing_key);
4826 if (session->smb2->application_key.data == NULL) {
4827 ZERO_STRUCT(session_key);
4828 return NT_STATUS_NO_MEMORY;
4831 if (conn->protocol >= PROTOCOL_SMB2_24) {
4832 const DATA_BLOB label = data_blob_string_const_null("SMB2APP");
4833 const DATA_BLOB context = data_blob_string_const_null("SmbRpc");
4835 smb2_key_derivation(session_key, sizeof(session_key),
4836 label.data, label.length,
4837 context.data, context.length,
4838 session->smb2->application_key.data);
4840 ZERO_STRUCT(session_key);
4842 session->smb2_channel.signing_key = data_blob_dup_talloc(session,
4843 session->smb2->signing_key);
4844 if (session->smb2_channel.signing_key.data == NULL) {
4845 return NT_STATUS_NO_MEMORY;
4848 check_signature = conn->mandatory_signing;
4850 hdr_flags = IVAL(recv_iov[0].iov_base, SMB2_HDR_FLAGS);
4851 if (hdr_flags & SMB2_HDR_FLAG_SIGNED) {
4853 * Sadly some vendors don't sign the
4854 * final SMB2 session setup response
4856 * At least Windows and Samba are always doing this
4857 * if there's a session key available.
4859 * We only check the signature if it's mandatory
4860 * or SMB2_HDR_FLAG_SIGNED is provided.
4862 check_signature = true;
4865 if (check_signature) {
4866 status = smb2_signing_check_pdu(session->smb2_channel.signing_key,
4867 session->conn->protocol,
4869 if (!NT_STATUS_IS_OK(status)) {
4874 session->smb2->should_sign = false;
4875 session->smb2->should_encrypt = false;
4877 if (conn->desire_signing) {
4878 session->smb2->should_sign = true;
4881 if (conn->smb2.server.security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) {
4882 session->smb2->should_sign = true;
4885 if (session->smb2->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) {
4886 session->smb2->should_encrypt = true;
4889 if (conn->protocol < PROTOCOL_SMB2_24) {
4890 session->smb2->should_encrypt = false;
4893 if (!(conn->smb2.server.capabilities & SMB2_CAP_ENCRYPTION)) {
4894 session->smb2->should_encrypt = false;
4897 generate_random_buffer((uint8_t *)&session->smb2->nonce_high,
4898 sizeof(session->smb2->nonce_high));
4899 session->smb2->nonce_low = 1;
4901 return NT_STATUS_OK;
4904 NTSTATUS smb2cli_session_create_channel(TALLOC_CTX *mem_ctx,
4905 struct smbXcli_session *session1,
4906 struct smbXcli_conn *conn,
4907 struct smbXcli_session **_session2)
4909 struct smbXcli_session *session2;
4911 if (session1->smb2->signing_key.length == 0) {
4912 return NT_STATUS_INVALID_PARAMETER_MIX;
4916 return NT_STATUS_INVALID_PARAMETER_MIX;
4919 session2 = talloc_zero(mem_ctx, struct smbXcli_session);
4920 if (session2 == NULL) {
4921 return NT_STATUS_NO_MEMORY;
4923 session2->smb2 = talloc_reference(session2, session1->smb2);
4924 if (session2->smb2 == NULL) {
4925 talloc_free(session2);
4926 return NT_STATUS_NO_MEMORY;
4929 talloc_set_destructor(session2, smbXcli_session_destructor);
4930 DLIST_ADD_END(conn->sessions, session2, struct smbXcli_session *);
4931 session2->conn = conn;
4933 *_session2 = session2;
4934 return NT_STATUS_OK;
4937 NTSTATUS smb2cli_session_set_channel_key(struct smbXcli_session *session,
4938 const DATA_BLOB _channel_key,
4939 const struct iovec *recv_iov)
4941 struct smbXcli_conn *conn = session->conn;
4942 uint8_t channel_key[16];
4946 return NT_STATUS_INVALID_PARAMETER_MIX;
4949 if (session->smb2_channel.signing_key.length != 0) {
4950 return NT_STATUS_INVALID_PARAMETER_MIX;
4953 ZERO_STRUCT(channel_key);
4954 memcpy(channel_key, _channel_key.data,
4955 MIN(_channel_key.length, sizeof(channel_key)));
4957 session->smb2_channel.signing_key = data_blob_talloc(session,
4959 sizeof(channel_key));
4960 if (session->smb2_channel.signing_key.data == NULL) {
4961 ZERO_STRUCT(channel_key);
4962 return NT_STATUS_NO_MEMORY;
4965 if (conn->protocol >= PROTOCOL_SMB2_24) {
4966 const DATA_BLOB label = data_blob_string_const_null("SMB2AESCMAC");
4967 const DATA_BLOB context = data_blob_string_const_null("SmbSign");
4969 smb2_key_derivation(channel_key, sizeof(channel_key),
4970 label.data, label.length,
4971 context.data, context.length,
4972 session->smb2_channel.signing_key.data);
4974 ZERO_STRUCT(channel_key);
4976 status = smb2_signing_check_pdu(session->smb2_channel.signing_key,
4977 session->conn->protocol,
4979 if (!NT_STATUS_IS_OK(status)) {
4983 return NT_STATUS_OK;
4986 NTSTATUS smb2cli_session_encryption_on(struct smbXcli_session *session)
4988 if (session->smb2->should_encrypt) {
4989 return NT_STATUS_OK;
4992 if (session->conn->protocol < PROTOCOL_SMB2_24) {
4993 return NT_STATUS_NOT_SUPPORTED;
4996 if (!(session->conn->smb2.server.capabilities & SMB2_CAP_ENCRYPTION)) {
4997 return NT_STATUS_NOT_SUPPORTED;
5000 if (session->smb2->signing_key.data == NULL) {
5001 return NT_STATUS_NOT_SUPPORTED;
5003 session->smb2->should_encrypt = true;
5004 return NT_STATUS_OK;
5007 struct smbXcli_tcon *smbXcli_tcon_create(TALLOC_CTX *mem_ctx)
5009 struct smbXcli_tcon *tcon;
5011 tcon = talloc_zero(mem_ctx, struct smbXcli_tcon);
5019 uint16_t smb1cli_tcon_current_id(struct smbXcli_tcon *tcon)
5021 return tcon->smb1.tcon_id;
5024 void smb1cli_tcon_set_id(struct smbXcli_tcon *tcon, uint16_t tcon_id)
5026 tcon->smb1.tcon_id = tcon_id;
5029 bool smb1cli_tcon_set_values(struct smbXcli_tcon *tcon,
5031 uint16_t optional_support,
5032 uint32_t maximal_access,
5033 uint32_t guest_maximal_access,
5034 const char *service,
5035 const char *fs_type)
5037 tcon->smb1.tcon_id = tcon_id;
5038 tcon->smb1.optional_support = optional_support;
5039 tcon->smb1.maximal_access = maximal_access;
5040 tcon->smb1.guest_maximal_access = guest_maximal_access;
5042 TALLOC_FREE(tcon->smb1.service);
5043 tcon->smb1.service = talloc_strdup(tcon, service);
5044 if (service != NULL && tcon->smb1.service == NULL) {
5048 TALLOC_FREE(tcon->smb1.fs_type);
5049 tcon->smb1.fs_type = talloc_strdup(tcon, fs_type);
5050 if (fs_type != NULL && tcon->smb1.fs_type == NULL) {
5057 uint32_t smb2cli_tcon_current_id(struct smbXcli_tcon *tcon)
5059 return tcon->smb2.tcon_id;
5062 uint32_t smb2cli_tcon_capabilities(struct smbXcli_tcon *tcon)
5064 return tcon->smb2.capabilities;
5067 void smb2cli_tcon_set_values(struct smbXcli_tcon *tcon,
5068 struct smbXcli_session *session,
5072 uint32_t capabilities,
5073 uint32_t maximal_access)
5075 tcon->smb2.tcon_id = tcon_id;
5076 tcon->smb2.type = type;
5077 tcon->smb2.flags = flags;
5078 tcon->smb2.capabilities = capabilities;
5079 tcon->smb2.maximal_access = maximal_access;
5081 tcon->smb2.should_encrypt = false;
5083 if (session == NULL) {
5087 tcon->smb2.should_encrypt = session->smb2->should_encrypt;
5089 if (flags & SMB2_SHAREFLAG_ENCRYPT_DATA) {
5090 tcon->smb2.should_encrypt = true;
5094 bool smb2cli_tcon_is_encryption_on(struct smbXcli_tcon *tcon)
5096 return tcon->smb2.should_encrypt;