2 * Unix SMB/CIFS implementation.
3 * RPC Pipe client / server routines
4 * Largely rewritten by Jeremy Allison 2005.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include "librpc/gen_ndr/cli_epmapper.h"
22 #include "../librpc/gen_ndr/ndr_schannel.h"
23 #include "../librpc/gen_ndr/ndr_lsa.h"
24 #include "../librpc/gen_ndr/ndr_dssetup.h"
25 #include "../librpc/gen_ndr/ndr_samr.h"
26 #include "../librpc/gen_ndr/ndr_netlogon.h"
27 #include "../librpc/gen_ndr/ndr_srvsvc.h"
28 #include "../librpc/gen_ndr/ndr_wkssvc.h"
29 #include "../librpc/gen_ndr/ndr_winreg.h"
30 #include "../librpc/gen_ndr/ndr_spoolss.h"
31 #include "../librpc/gen_ndr/ndr_dfs.h"
32 #include "../librpc/gen_ndr/ndr_echo.h"
33 #include "../librpc/gen_ndr/ndr_initshutdown.h"
34 #include "../librpc/gen_ndr/ndr_svcctl.h"
35 #include "../librpc/gen_ndr/ndr_eventlog.h"
36 #include "../librpc/gen_ndr/ndr_ntsvcs.h"
37 #include "../librpc/gen_ndr/ndr_epmapper.h"
38 #include "../librpc/gen_ndr/ndr_drsuapi.h"
39 #include "../libcli/auth/schannel.h"
40 #include "../libcli/auth/spnego.h"
42 #include "../libcli/auth/ntlmssp.h"
43 #include "rpc_client/cli_netlogon.h"
44 #include "librpc/gen_ndr/ndr_dcerpc.h"
47 #define DBGC_CLASS DBGC_RPC_CLI
49 static const char *get_pipe_name_from_iface(
50 TALLOC_CTX *mem_ctx, const struct ndr_interface_table *interface)
53 const struct ndr_interface_string_array *ep = interface->endpoints;
56 for (i=0; i<ep->count; i++) {
57 if (strncmp(ep->names[i], "ncacn_np:[\\pipe\\", 16) == 0) {
66 * extract the pipe name without \\pipe from for example
67 * ncacn_np:[\\pipe\\epmapper]
69 p = strchr(ep->names[i]+15, ']');
73 return talloc_strndup(mem_ctx, ep->names[i]+15, p - ep->names[i] - 15);
76 static const struct ndr_interface_table **interfaces;
78 bool smb_register_ndr_interface(const struct ndr_interface_table *interface)
80 int num_interfaces = talloc_array_length(interfaces);
81 const struct ndr_interface_table **tmp;
84 for (i=0; i<num_interfaces; i++) {
85 if (ndr_syntax_id_equal(&interfaces[i]->syntax_id,
86 &interface->syntax_id)) {
91 tmp = talloc_realloc(NULL, interfaces,
92 const struct ndr_interface_table *,
95 DEBUG(1, ("smb_register_ndr_interface: talloc failed\n"));
99 interfaces[num_interfaces] = interface;
103 static bool initialize_interfaces(void)
105 if (!smb_register_ndr_interface(&ndr_table_lsarpc)) {
108 if (!smb_register_ndr_interface(&ndr_table_dssetup)) {
111 if (!smb_register_ndr_interface(&ndr_table_samr)) {
114 if (!smb_register_ndr_interface(&ndr_table_netlogon)) {
117 if (!smb_register_ndr_interface(&ndr_table_srvsvc)) {
120 if (!smb_register_ndr_interface(&ndr_table_wkssvc)) {
123 if (!smb_register_ndr_interface(&ndr_table_winreg)) {
126 if (!smb_register_ndr_interface(&ndr_table_spoolss)) {
129 if (!smb_register_ndr_interface(&ndr_table_netdfs)) {
132 if (!smb_register_ndr_interface(&ndr_table_rpcecho)) {
135 if (!smb_register_ndr_interface(&ndr_table_initshutdown)) {
138 if (!smb_register_ndr_interface(&ndr_table_svcctl)) {
141 if (!smb_register_ndr_interface(&ndr_table_eventlog)) {
144 if (!smb_register_ndr_interface(&ndr_table_ntsvcs)) {
147 if (!smb_register_ndr_interface(&ndr_table_epmapper)) {
150 if (!smb_register_ndr_interface(&ndr_table_drsuapi)) {
156 const struct ndr_interface_table *get_iface_from_syntax(
157 const struct ndr_syntax_id *syntax)
162 if (interfaces == NULL) {
163 if (!initialize_interfaces()) {
167 num_interfaces = talloc_array_length(interfaces);
169 for (i=0; i<num_interfaces; i++) {
170 if (ndr_syntax_id_equal(&interfaces[i]->syntax_id, syntax)) {
171 return interfaces[i];
178 /****************************************************************************
179 Return the pipe name from the interface.
180 ****************************************************************************/
182 const char *get_pipe_name_from_syntax(TALLOC_CTX *mem_ctx,
183 const struct ndr_syntax_id *syntax)
185 const struct ndr_interface_table *interface;
189 interface = get_iface_from_syntax(syntax);
190 if (interface != NULL) {
191 result = get_pipe_name_from_iface(mem_ctx, interface);
192 if (result != NULL) {
198 * Here we should ask \\epmapper, but for now our code is only
199 * interested in the known pipes mentioned in pipe_names[]
202 guid_str = GUID_string(talloc_tos(), &syntax->uuid);
203 if (guid_str == NULL) {
206 result = talloc_asprintf(mem_ctx, "Interface %s.%d", guid_str,
207 (int)syntax->if_version);
208 TALLOC_FREE(guid_str);
210 if (result == NULL) {
216 /********************************************************************
217 Map internal value to wire value.
218 ********************************************************************/
220 static int map_pipe_auth_type_to_rpc_auth_type(enum pipe_auth_type auth_type)
224 case PIPE_AUTH_TYPE_NONE:
225 return DCERPC_AUTH_TYPE_NONE;
227 case PIPE_AUTH_TYPE_NTLMSSP:
228 return DCERPC_AUTH_TYPE_NTLMSSP;
230 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
231 case PIPE_AUTH_TYPE_SPNEGO_KRB5:
232 return DCERPC_AUTH_TYPE_SPNEGO;
234 case PIPE_AUTH_TYPE_SCHANNEL:
235 return DCERPC_AUTH_TYPE_SCHANNEL;
237 case PIPE_AUTH_TYPE_KRB5:
238 return DCERPC_AUTH_TYPE_KRB5;
241 DEBUG(0,("map_pipe_auth_type_to_rpc_type: unknown pipe "
243 (unsigned int)auth_type ));
249 /********************************************************************
250 Pipe description for a DEBUG
251 ********************************************************************/
252 static const char *rpccli_pipe_txt(TALLOC_CTX *mem_ctx,
253 struct rpc_pipe_client *cli)
255 char *result = talloc_asprintf(mem_ctx, "host %s", cli->desthost);
256 if (result == NULL) {
262 /********************************************************************
264 ********************************************************************/
266 static uint32 get_rpc_call_id(void)
268 static uint32 call_id = 0;
273 * Realloc pdu to have a least "size" bytes
276 static bool rpc_grow_buffer(prs_struct *pdu, size_t size)
280 if (prs_data_size(pdu) >= size) {
284 extra_size = size - prs_data_size(pdu);
286 if (!prs_force_grow(pdu, extra_size)) {
287 DEBUG(0, ("rpc_grow_buffer: Failed to grow parse struct by "
288 "%d bytes.\n", (int)extra_size));
292 DEBUG(5, ("rpc_grow_buffer: grew buffer by %d bytes to %u\n",
293 (int)extra_size, prs_data_size(pdu)));
297 /*******************************************************************
298 *******************************************************************/
300 NTSTATUS dcerpc_push_ncacn_packet(TALLOC_CTX *mem_ctx,
301 enum dcerpc_pkt_type ptype,
303 uint16_t frag_length,
304 uint16_t auth_length,
306 union dcerpc_payload u,
309 struct ncacn_packet r;
310 enum ndr_err_code ndr_err;
313 r.rpc_vers_minor = 0;
315 r.pfc_flags = pfc_flags;
316 r.drep[0] = DCERPC_DREP_LE;
320 r.frag_length = frag_length;
321 r.auth_length = auth_length;
325 ndr_err = ndr_push_struct_blob(blob, mem_ctx, &r,
326 (ndr_push_flags_fn_t)ndr_push_ncacn_packet);
327 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
328 return ndr_map_error2ntstatus(ndr_err);
331 if (DEBUGLEVEL >= 10) {
332 NDR_PRINT_DEBUG(ncacn_packet, &r);
338 /*******************************************************************
339 *******************************************************************/
341 NTSTATUS dcerpc_pull_ncacn_packet(TALLOC_CTX *mem_ctx,
342 const DATA_BLOB *blob,
343 struct ncacn_packet *r)
345 enum ndr_err_code ndr_err;
347 ndr_err = ndr_pull_struct_blob(blob, mem_ctx, r,
348 (ndr_pull_flags_fn_t)ndr_pull_ncacn_packet);
349 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
350 return ndr_map_error2ntstatus(ndr_err);
353 if (DEBUGLEVEL >= 10) {
354 NDR_PRINT_DEBUG(ncacn_packet, r);
360 /*******************************************************************
361 *******************************************************************/
363 NTSTATUS dcerpc_pull_ncacn_packet_header(TALLOC_CTX *mem_ctx,
364 const DATA_BLOB *blob,
365 struct ncacn_packet_header *r)
367 enum ndr_err_code ndr_err;
369 ndr_err = ndr_pull_struct_blob(blob, mem_ctx, r,
370 (ndr_pull_flags_fn_t)ndr_pull_ncacn_packet_header);
371 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
372 return ndr_map_error2ntstatus(ndr_err);
375 if (DEBUGLEVEL >= 10) {
376 NDR_PRINT_DEBUG(ncacn_packet_header, r);
382 /*******************************************************************
383 ********************************************************************/
385 static NTSTATUS dcerpc_push_schannel_bind(TALLOC_CTX *mem_ctx,
386 struct NL_AUTH_MESSAGE *r,
389 enum ndr_err_code ndr_err;
391 ndr_err = ndr_push_struct_blob(blob, mem_ctx, r,
392 (ndr_push_flags_fn_t)ndr_push_NL_AUTH_MESSAGE);
393 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
394 return ndr_map_error2ntstatus(ndr_err);
397 if (DEBUGLEVEL >= 10) {
398 NDR_PRINT_DEBUG(NL_AUTH_MESSAGE, r);
404 /*******************************************************************
405 ********************************************************************/
407 static NTSTATUS dcerpc_pull_dcerpc_auth(TALLOC_CTX *mem_ctx,
408 const DATA_BLOB *blob,
409 struct dcerpc_auth *r)
411 enum ndr_err_code ndr_err;
413 ndr_err = ndr_pull_struct_blob(blob, mem_ctx, r,
414 (ndr_pull_flags_fn_t)ndr_pull_dcerpc_auth);
415 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
416 return ndr_map_error2ntstatus(ndr_err);
419 if (DEBUGLEVEL >= 10) {
420 NDR_PRINT_DEBUG(dcerpc_auth, r);
426 /*******************************************************************
427 Use SMBreadX to get rest of one fragment's worth of rpc data.
428 Reads the whole size or give an error message
429 ********************************************************************/
431 struct rpc_read_state {
432 struct event_context *ev;
433 struct rpc_cli_transport *transport;
439 static void rpc_read_done(struct tevent_req *subreq);
441 static struct tevent_req *rpc_read_send(TALLOC_CTX *mem_ctx,
442 struct event_context *ev,
443 struct rpc_cli_transport *transport,
444 uint8_t *data, size_t size)
446 struct tevent_req *req, *subreq;
447 struct rpc_read_state *state;
449 req = tevent_req_create(mem_ctx, &state, struct rpc_read_state);
454 state->transport = transport;
459 DEBUG(5, ("rpc_read_send: data_to_read: %u\n", (unsigned int)size));
461 subreq = transport->read_send(state, ev, (uint8_t *)data, size,
463 if (subreq == NULL) {
466 tevent_req_set_callback(subreq, rpc_read_done, req);
474 static void rpc_read_done(struct tevent_req *subreq)
476 struct tevent_req *req = tevent_req_callback_data(
477 subreq, struct tevent_req);
478 struct rpc_read_state *state = tevent_req_data(
479 req, struct rpc_read_state);
483 status = state->transport->read_recv(subreq, &received);
485 if (!NT_STATUS_IS_OK(status)) {
486 tevent_req_nterror(req, status);
490 state->num_read += received;
491 if (state->num_read == state->size) {
492 tevent_req_done(req);
496 subreq = state->transport->read_send(state, state->ev,
497 state->data + state->num_read,
498 state->size - state->num_read,
499 state->transport->priv);
500 if (tevent_req_nomem(subreq, req)) {
503 tevent_req_set_callback(subreq, rpc_read_done, req);
506 static NTSTATUS rpc_read_recv(struct tevent_req *req)
508 return tevent_req_simple_recv_ntstatus(req);
511 struct rpc_write_state {
512 struct event_context *ev;
513 struct rpc_cli_transport *transport;
519 static void rpc_write_done(struct tevent_req *subreq);
521 static struct tevent_req *rpc_write_send(TALLOC_CTX *mem_ctx,
522 struct event_context *ev,
523 struct rpc_cli_transport *transport,
524 const uint8_t *data, size_t size)
526 struct tevent_req *req, *subreq;
527 struct rpc_write_state *state;
529 req = tevent_req_create(mem_ctx, &state, struct rpc_write_state);
534 state->transport = transport;
537 state->num_written = 0;
539 DEBUG(5, ("rpc_write_send: data_to_write: %u\n", (unsigned int)size));
541 subreq = transport->write_send(state, ev, data, size, transport->priv);
542 if (subreq == NULL) {
545 tevent_req_set_callback(subreq, rpc_write_done, req);
552 static void rpc_write_done(struct tevent_req *subreq)
554 struct tevent_req *req = tevent_req_callback_data(
555 subreq, struct tevent_req);
556 struct rpc_write_state *state = tevent_req_data(
557 req, struct rpc_write_state);
561 status = state->transport->write_recv(subreq, &written);
563 if (!NT_STATUS_IS_OK(status)) {
564 tevent_req_nterror(req, status);
568 state->num_written += written;
570 if (state->num_written == state->size) {
571 tevent_req_done(req);
575 subreq = state->transport->write_send(state, state->ev,
576 state->data + state->num_written,
577 state->size - state->num_written,
578 state->transport->priv);
579 if (tevent_req_nomem(subreq, req)) {
582 tevent_req_set_callback(subreq, rpc_write_done, req);
585 static NTSTATUS rpc_write_recv(struct tevent_req *req)
587 return tevent_req_simple_recv_ntstatus(req);
591 static NTSTATUS parse_rpc_header(struct rpc_pipe_client *cli,
592 struct ncacn_packet_header *prhdr,
596 DATA_BLOB blob = data_blob_const(prs_data_p(pdu), prs_data_size(pdu));
599 * This next call sets the endian bit correctly in current_pdu. We
600 * will propagate this to rbuf later.
603 status = dcerpc_pull_ncacn_packet_header(cli, &blob, prhdr);
604 if (!NT_STATUS_IS_OK(status)) {
608 if (!prs_set_offset(pdu, prs_offset(pdu) + RPC_HEADER_LEN)) {
609 return NT_STATUS_BUFFER_TOO_SMALL;
612 if (UNMARSHALLING(pdu) && prhdr->drep[0] == 0) {
613 DEBUG(10,("parse_rpc_header: PDU data format is big-endian. Setting flag.\n"));
614 prs_set_endian_data(pdu, RPC_BIG_ENDIAN);
617 if (prhdr->frag_length > cli->max_recv_frag) {
618 DEBUG(0, ("cli_pipe_get_current_pdu: Server sent fraglen %d,"
619 " we only allow %d\n", (int)prhdr->frag_length,
620 (int)cli->max_recv_frag));
621 return NT_STATUS_BUFFER_TOO_SMALL;
627 /****************************************************************************
628 Try and get a PDU's worth of data from current_pdu. If not, then read more
630 ****************************************************************************/
632 struct get_complete_frag_state {
633 struct event_context *ev;
634 struct rpc_pipe_client *cli;
635 struct ncacn_packet_header *prhdr;
639 static void get_complete_frag_got_header(struct tevent_req *subreq);
640 static void get_complete_frag_got_rest(struct tevent_req *subreq);
642 static struct tevent_req *get_complete_frag_send(TALLOC_CTX *mem_ctx,
643 struct event_context *ev,
644 struct rpc_pipe_client *cli,
645 struct ncacn_packet_header *prhdr,
648 struct tevent_req *req, *subreq;
649 struct get_complete_frag_state *state;
653 req = tevent_req_create(mem_ctx, &state,
654 struct get_complete_frag_state);
660 state->prhdr = prhdr;
663 pdu_len = prs_data_size(pdu);
664 if (pdu_len < RPC_HEADER_LEN) {
665 if (!rpc_grow_buffer(pdu, RPC_HEADER_LEN)) {
666 status = NT_STATUS_NO_MEMORY;
669 subreq = rpc_read_send(
671 state->cli->transport,
672 (uint8_t *)(prs_data_p(state->pdu) + pdu_len),
673 RPC_HEADER_LEN - pdu_len);
674 if (subreq == NULL) {
675 status = NT_STATUS_NO_MEMORY;
678 tevent_req_set_callback(subreq, get_complete_frag_got_header,
683 status = parse_rpc_header(cli, prhdr, pdu);
684 if (!NT_STATUS_IS_OK(status)) {
689 * Ensure we have frag_len bytes of data.
691 if (pdu_len < prhdr->frag_length) {
692 if (!rpc_grow_buffer(pdu, prhdr->frag_length)) {
693 status = NT_STATUS_NO_MEMORY;
696 subreq = rpc_read_send(state, state->ev,
697 state->cli->transport,
698 (uint8_t *)(prs_data_p(pdu) + pdu_len),
699 prhdr->frag_length - pdu_len);
700 if (subreq == NULL) {
701 status = NT_STATUS_NO_MEMORY;
704 tevent_req_set_callback(subreq, get_complete_frag_got_rest,
709 status = NT_STATUS_OK;
711 if (NT_STATUS_IS_OK(status)) {
712 tevent_req_done(req);
714 tevent_req_nterror(req, status);
716 return tevent_req_post(req, ev);
719 static void get_complete_frag_got_header(struct tevent_req *subreq)
721 struct tevent_req *req = tevent_req_callback_data(
722 subreq, struct tevent_req);
723 struct get_complete_frag_state *state = tevent_req_data(
724 req, struct get_complete_frag_state);
727 status = rpc_read_recv(subreq);
729 if (!NT_STATUS_IS_OK(status)) {
730 tevent_req_nterror(req, status);
734 status = parse_rpc_header(state->cli, state->prhdr, state->pdu);
735 if (!NT_STATUS_IS_OK(status)) {
736 tevent_req_nterror(req, status);
740 if (!rpc_grow_buffer(state->pdu, state->prhdr->frag_length)) {
741 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
746 * We're here in this piece of code because we've read exactly
747 * RPC_HEADER_LEN bytes into state->pdu.
750 subreq = rpc_read_send(
751 state, state->ev, state->cli->transport,
752 (uint8_t *)(prs_data_p(state->pdu) + RPC_HEADER_LEN),
753 state->prhdr->frag_length - RPC_HEADER_LEN);
754 if (tevent_req_nomem(subreq, req)) {
757 tevent_req_set_callback(subreq, get_complete_frag_got_rest, req);
760 static void get_complete_frag_got_rest(struct tevent_req *subreq)
762 struct tevent_req *req = tevent_req_callback_data(
763 subreq, struct tevent_req);
766 status = rpc_read_recv(subreq);
768 if (!NT_STATUS_IS_OK(status)) {
769 tevent_req_nterror(req, status);
772 tevent_req_done(req);
775 static NTSTATUS get_complete_frag_recv(struct tevent_req *req)
777 return tevent_req_simple_recv_ntstatus(req);
780 /****************************************************************************
781 NTLMSSP specific sign/seal.
782 Virtually identical to rpc_server/srv_pipe.c:api_pipe_ntlmssp_auth_process.
783 In fact I should probably abstract these into identical pieces of code... JRA.
784 ****************************************************************************/
786 static NTSTATUS cli_pipe_verify_ntlmssp(struct rpc_pipe_client *cli,
787 struct ncacn_packet_header *prhdr,
788 prs_struct *current_pdu,
789 uint8 *p_ss_padding_len)
791 struct dcerpc_auth auth_info;
792 uint32 save_offset = prs_offset(current_pdu);
793 uint32_t auth_len = prhdr->auth_length;
794 struct ntlmssp_state *ntlmssp_state = cli->auth->a_u.ntlmssp_state;
795 unsigned char *data = NULL;
797 unsigned char *full_packet_data = NULL;
798 size_t full_packet_data_len;
803 if (cli->auth->auth_level == DCERPC_AUTH_LEVEL_NONE
804 || cli->auth->auth_level == DCERPC_AUTH_LEVEL_CONNECT) {
808 if (!ntlmssp_state) {
809 return NT_STATUS_INVALID_PARAMETER;
812 /* Ensure there's enough data for an authenticated response. */
813 if (auth_len > RPC_MAX_PDU_FRAG_LEN ||
814 prhdr->frag_length < RPC_HEADER_LEN +
816 RPC_HDR_AUTH_LEN + auth_len) {
817 DEBUG(0,("cli_pipe_verify_ntlmssp: auth_len %u is too large.\n",
818 (unsigned int)auth_len ));
819 return NT_STATUS_BUFFER_TOO_SMALL;
823 * We need the full packet data + length (minus auth stuff) as well as the packet data + length
824 * after the RPC header.
825 * We need to pass in the full packet (minus auth len) to the NTLMSSP sign and check seal
826 * functions as NTLMv2 checks the rpc headers also.
829 data = (unsigned char *)(prs_data_p(current_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN);
830 data_len = (size_t)(prhdr->frag_length - RPC_HEADER_LEN - RPC_HDR_RESP_LEN - RPC_HDR_AUTH_LEN - auth_len);
832 full_packet_data = (unsigned char *)prs_data_p(current_pdu);
833 full_packet_data_len = prhdr->frag_length - auth_len;
835 /* Pull the auth header and the following data into a blob. */
836 /* NB. The offset of the auth_header is relative to the *end*
837 * of the packet, not the start. */
838 if(!prs_set_offset(current_pdu, prhdr->frag_length - RPC_HDR_AUTH_LEN - auth_len)) {
839 DEBUG(0,("cli_pipe_verify_ntlmssp: cannot move offset to %u.\n",
840 (unsigned int)RPC_HEADER_LEN + (unsigned int)RPC_HDR_RESP_LEN + (unsigned int)data_len ));
841 return NT_STATUS_BUFFER_TOO_SMALL;
844 blob = data_blob_const(prs_data_p(current_pdu) + prs_offset(current_pdu),
845 prs_data_size(current_pdu) - prs_offset(current_pdu));
847 status = dcerpc_pull_dcerpc_auth(cli, &blob, &auth_info);
848 if (!NT_STATUS_IS_OK(status)) {
849 DEBUG(0,("cli_pipe_verify_ntlmssp: failed to unmarshall dcerpc_auth.\n"));
853 /* Ensure auth_pad_len fits into the packet. */
854 if (RPC_HEADER_LEN + RPC_HDR_REQ_LEN + auth_info.auth_pad_length +
855 RPC_HDR_AUTH_LEN + auth_len > prhdr->frag_length) {
856 DEBUG(0,("cli_pipe_verify_ntlmssp: auth_info.auth_pad_len "
857 "too large (%u), auth_len (%u), frag_len = (%u).\n",
858 (unsigned int)auth_info.auth_pad_length,
859 (unsigned int)auth_len,
860 (unsigned int)prhdr->frag_length));
861 return NT_STATUS_BUFFER_TOO_SMALL;
865 auth_blob = auth_info.credentials;
867 switch (cli->auth->auth_level) {
868 case DCERPC_AUTH_LEVEL_PRIVACY:
869 /* Data is encrypted. */
870 status = ntlmssp_unseal_packet(ntlmssp_state,
873 full_packet_data_len,
875 if (!NT_STATUS_IS_OK(status)) {
876 DEBUG(0,("cli_pipe_verify_ntlmssp: failed to unseal "
877 "packet from %s. Error was %s.\n",
878 rpccli_pipe_txt(talloc_tos(), cli),
879 nt_errstr(status) ));
883 case DCERPC_AUTH_LEVEL_INTEGRITY:
884 /* Data is signed. */
885 status = ntlmssp_check_packet(ntlmssp_state,
888 full_packet_data_len,
890 if (!NT_STATUS_IS_OK(status)) {
891 DEBUG(0,("cli_pipe_verify_ntlmssp: check signing failed on "
892 "packet from %s. Error was %s.\n",
893 rpccli_pipe_txt(talloc_tos(), cli),
894 nt_errstr(status) ));
899 DEBUG(0, ("cli_pipe_verify_ntlmssp: unknown internal "
900 "auth level %d\n", cli->auth->auth_level));
901 return NT_STATUS_INVALID_INFO_CLASS;
905 * Return the current pointer to the data offset.
908 if(!prs_set_offset(current_pdu, save_offset)) {
909 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
910 (unsigned int)save_offset ));
911 return NT_STATUS_BUFFER_TOO_SMALL;
915 * Remember the padding length. We must remove it from the real data
916 * stream once the sign/seal is done.
919 *p_ss_padding_len = auth_info.auth_pad_length;
924 /****************************************************************************
925 schannel specific sign/seal.
926 ****************************************************************************/
928 static NTSTATUS cli_pipe_verify_schannel(struct rpc_pipe_client *cli,
929 struct ncacn_packet_header *prhdr,
930 prs_struct *current_pdu,
931 uint8 *p_ss_padding_len)
933 RPC_HDR_AUTH auth_info;
934 uint32_t auth_len = prhdr->auth_length;
935 uint32 save_offset = prs_offset(current_pdu);
936 struct schannel_state *schannel_auth =
937 cli->auth->a_u.schannel_auth;
943 if (cli->auth->auth_level == DCERPC_AUTH_LEVEL_NONE
944 || cli->auth->auth_level == DCERPC_AUTH_LEVEL_CONNECT) {
948 if (auth_len < RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN) {
949 DEBUG(0,("cli_pipe_verify_schannel: auth_len %u.\n", (unsigned int)auth_len ));
950 return NT_STATUS_INVALID_PARAMETER;
953 if (!schannel_auth) {
954 return NT_STATUS_INVALID_PARAMETER;
957 /* Ensure there's enough data for an authenticated response. */
958 if ((auth_len > RPC_MAX_PDU_FRAG_LEN) ||
959 (RPC_HEADER_LEN + RPC_HDR_RESP_LEN + RPC_HDR_AUTH_LEN + auth_len > prhdr->frag_length)) {
960 DEBUG(0,("cli_pipe_verify_schannel: auth_len %u is too large.\n",
961 (unsigned int)auth_len ));
962 return NT_STATUS_INVALID_PARAMETER;
965 data_len = prhdr->frag_length - RPC_HEADER_LEN - RPC_HDR_RESP_LEN - RPC_HDR_AUTH_LEN - auth_len;
967 /* Pull the auth header and the following data into a blob. */
968 /* NB. The offset of the auth_header is relative to the *end*
969 * of the packet, not the start. */
970 if(!prs_set_offset(current_pdu,
971 prhdr->frag_length - RPC_HDR_AUTH_LEN - auth_len)) {
972 DEBUG(0,("cli_pipe_verify_schannel: cannot move "
974 (unsigned int)(prhdr->frag_length -
975 RPC_HDR_AUTH_LEN - auth_len) ));
976 return NT_STATUS_BUFFER_TOO_SMALL;
979 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, current_pdu, 0)) {
980 DEBUG(0,("cli_pipe_verify_schannel: failed to unmarshall RPC_HDR_AUTH.\n"));
981 return NT_STATUS_BUFFER_TOO_SMALL;
984 /* Ensure auth_pad_len fits into the packet. */
985 if (RPC_HEADER_LEN + RPC_HDR_REQ_LEN + auth_info.auth_pad_len +
986 RPC_HDR_AUTH_LEN + auth_len > prhdr->frag_length) {
987 DEBUG(0,("cli_pipe_verify_schannel: auth_info.auth_pad_len "
988 "too large (%u), auth_len (%u), frag_len = (%u).\n",
989 (unsigned int)auth_info.auth_pad_len,
990 (unsigned int)auth_len,
991 (unsigned int)prhdr->frag_length));
992 return NT_STATUS_BUFFER_TOO_SMALL;
995 if (auth_info.auth_type != DCERPC_AUTH_TYPE_SCHANNEL) {
996 DEBUG(0,("cli_pipe_verify_schannel: Invalid auth info %d on schannel\n",
997 auth_info.auth_type));
998 return NT_STATUS_BUFFER_TOO_SMALL;
1001 blob = data_blob_const(prs_data_p(current_pdu) + prs_offset(current_pdu), auth_len);
1003 if (DEBUGLEVEL >= 10) {
1004 dump_NL_AUTH_SIGNATURE(talloc_tos(), &blob);
1007 data = (uint8_t *)prs_data_p(current_pdu)+RPC_HEADER_LEN+RPC_HDR_RESP_LEN;
1009 switch (cli->auth->auth_level) {
1010 case DCERPC_AUTH_LEVEL_PRIVACY:
1011 status = netsec_incoming_packet(schannel_auth,
1018 case DCERPC_AUTH_LEVEL_INTEGRITY:
1019 status = netsec_incoming_packet(schannel_auth,
1027 status = NT_STATUS_INTERNAL_ERROR;
1031 if (!NT_STATUS_IS_OK(status)) {
1032 DEBUG(3,("cli_pipe_verify_schannel: failed to decode PDU "
1033 "Connection to %s (%s).\n",
1034 rpccli_pipe_txt(talloc_tos(), cli),
1035 nt_errstr(status)));
1036 return NT_STATUS_INVALID_PARAMETER;
1040 * Return the current pointer to the data offset.
1043 if(!prs_set_offset(current_pdu, save_offset)) {
1044 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
1045 (unsigned int)save_offset ));
1046 return NT_STATUS_BUFFER_TOO_SMALL;
1050 * Remember the padding length. We must remove it from the real data
1051 * stream once the sign/seal is done.
1054 *p_ss_padding_len = auth_info.auth_pad_len;
1056 return NT_STATUS_OK;
1059 /****************************************************************************
1060 Do the authentication checks on an incoming pdu. Check sign and unseal etc.
1061 ****************************************************************************/
1063 static NTSTATUS cli_pipe_validate_rpc_response(struct rpc_pipe_client *cli,
1064 struct ncacn_packet_header *prhdr,
1065 prs_struct *current_pdu,
1066 uint8 *p_ss_padding_len)
1068 NTSTATUS ret = NT_STATUS_OK;
1070 /* Paranioa checks for auth_len. */
1071 if (prhdr->auth_length) {
1072 if (prhdr->auth_length > prhdr->frag_length) {
1073 return NT_STATUS_INVALID_PARAMETER;
1076 if (prhdr->auth_length + (unsigned int)RPC_HDR_AUTH_LEN < prhdr->auth_length ||
1077 prhdr->auth_length + (unsigned int)RPC_HDR_AUTH_LEN < (unsigned int)RPC_HDR_AUTH_LEN) {
1078 /* Integer wrap attempt. */
1079 return NT_STATUS_INVALID_PARAMETER;
1084 * Now we have a complete RPC request PDU fragment, try and verify any auth data.
1087 switch(cli->auth->auth_type) {
1088 case PIPE_AUTH_TYPE_NONE:
1089 if (prhdr->auth_length) {
1090 DEBUG(3, ("cli_pipe_validate_rpc_response: "
1091 "Connection to %s - got non-zero "
1093 rpccli_pipe_txt(talloc_tos(), cli),
1094 (unsigned int)prhdr->auth_length));
1095 return NT_STATUS_INVALID_PARAMETER;
1099 case PIPE_AUTH_TYPE_NTLMSSP:
1100 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
1101 ret = cli_pipe_verify_ntlmssp(cli, prhdr, current_pdu, p_ss_padding_len);
1102 if (!NT_STATUS_IS_OK(ret)) {
1107 case PIPE_AUTH_TYPE_SCHANNEL:
1108 ret = cli_pipe_verify_schannel(cli, prhdr, current_pdu, p_ss_padding_len);
1109 if (!NT_STATUS_IS_OK(ret)) {
1114 case PIPE_AUTH_TYPE_KRB5:
1115 case PIPE_AUTH_TYPE_SPNEGO_KRB5:
1117 DEBUG(3, ("cli_pipe_validate_rpc_response: Connection "
1118 "to %s - unknown internal auth type %u.\n",
1119 rpccli_pipe_txt(talloc_tos(), cli),
1120 cli->auth->auth_type ));
1121 return NT_STATUS_INVALID_INFO_CLASS;
1124 return NT_STATUS_OK;
1127 /****************************************************************************
1128 Do basic authentication checks on an incoming pdu.
1129 ****************************************************************************/
1131 static NTSTATUS cli_pipe_validate_current_pdu(struct rpc_pipe_client *cli,
1132 struct ncacn_packet_header *prhdr,
1133 prs_struct *current_pdu,
1134 uint8 expected_pkt_type,
1137 prs_struct *return_data)
1140 NTSTATUS ret = NT_STATUS_OK;
1141 uint32 current_pdu_len = prs_data_size(current_pdu);
1143 if (current_pdu_len != prhdr->frag_length) {
1144 DEBUG(5,("cli_pipe_validate_current_pdu: incorrect pdu length %u, expected %u\n",
1145 (unsigned int)current_pdu_len, (unsigned int)prhdr->frag_length));
1146 return NT_STATUS_INVALID_PARAMETER;
1150 * Point the return values at the real data including the RPC
1151 * header. Just in case the caller wants it.
1153 *ppdata = prs_data_p(current_pdu);
1154 *pdata_len = current_pdu_len;
1156 /* Ensure we have the correct type. */
1157 switch (prhdr->ptype) {
1158 case DCERPC_PKT_ALTER_RESP:
1159 case DCERPC_PKT_BIND_ACK:
1161 /* Alter context and bind ack share the same packet definitions. */
1165 case DCERPC_PKT_RESPONSE:
1167 uint8 ss_padding_len = 0;
1169 struct ncacn_packet r;
1171 blob = data_blob_const(prs_data_p(current_pdu),
1172 prs_data_size(current_pdu));
1174 ret = dcerpc_pull_ncacn_packet(cli, &blob, &r);
1175 if (!NT_STATUS_IS_OK(ret)) {
1179 if (!prs_set_offset(current_pdu, prs_offset(current_pdu) + RPC_HDR_RESP_LEN)) {
1180 return NT_STATUS_BUFFER_TOO_SMALL;
1183 /* Here's where we deal with incoming sign/seal. */
1184 ret = cli_pipe_validate_rpc_response(cli, prhdr,
1185 current_pdu, &ss_padding_len);
1186 if (!NT_STATUS_IS_OK(ret)) {
1190 /* Point the return values at the NDR data. Remember to remove any ss padding. */
1191 *ppdata = prs_data_p(current_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN;
1193 if (current_pdu_len < RPC_HEADER_LEN + RPC_HDR_RESP_LEN + ss_padding_len) {
1194 return NT_STATUS_BUFFER_TOO_SMALL;
1197 *pdata_len = current_pdu_len - RPC_HEADER_LEN - RPC_HDR_RESP_LEN - ss_padding_len;
1199 /* Remember to remove the auth footer. */
1200 if (prhdr->auth_length) {
1201 /* We've already done integer wrap tests on auth_len in
1202 cli_pipe_validate_rpc_response(). */
1203 if (*pdata_len < RPC_HDR_AUTH_LEN + prhdr->auth_length) {
1204 return NT_STATUS_BUFFER_TOO_SMALL;
1206 *pdata_len -= (RPC_HDR_AUTH_LEN + prhdr->auth_length);
1209 DEBUG(10,("cli_pipe_validate_current_pdu: got pdu len %u, data_len %u, ss_len %u\n",
1210 current_pdu_len, *pdata_len, ss_padding_len ));
1213 * If this is the first reply, and the allocation hint is reasonably, try and
1214 * set up the return_data parse_struct to the correct size.
1217 if ((prs_data_size(return_data) == 0) && r.u.response.alloc_hint && (r.u.response.alloc_hint < 15*1024*1024)) {
1218 if (!prs_set_buffer_size(return_data, r.u.response.alloc_hint)) {
1219 DEBUG(0,("cli_pipe_validate_current_pdu: reply alloc hint %u "
1220 "too large to allocate\n",
1221 (unsigned int)r.u.response.alloc_hint ));
1222 return NT_STATUS_NO_MEMORY;
1229 case DCERPC_PKT_BIND_NAK:
1230 DEBUG(1, ("cli_pipe_validate_current_pdu: Bind NACK "
1231 "received from %s!\n",
1232 rpccli_pipe_txt(talloc_tos(), cli)));
1233 /* Use this for now... */
1234 return NT_STATUS_NETWORK_ACCESS_DENIED;
1236 case DCERPC_PKT_FAULT:
1239 struct ncacn_packet r;
1241 blob = data_blob_const(prs_data_p(current_pdu),
1242 prs_data_size(current_pdu));
1244 ret = dcerpc_pull_ncacn_packet(cli, &blob, &r);
1245 if (!NT_STATUS_IS_OK(ret)) {
1248 DEBUG(1, ("cli_pipe_validate_current_pdu: RPC fault "
1249 "code %s received from %s!\n",
1250 dcerpc_errstr(talloc_tos(), r.u.fault.status),
1251 rpccli_pipe_txt(talloc_tos(), cli)));
1253 if (NT_STATUS_IS_OK(NT_STATUS(r.u.fault.status))) {
1254 return NT_STATUS_UNSUCCESSFUL;
1256 return NT_STATUS(r.u.fault.status);
1261 DEBUG(0, ("cli_pipe_validate_current_pdu: unknown packet type %u received "
1263 (unsigned int)prhdr->ptype,
1264 rpccli_pipe_txt(talloc_tos(), cli)));
1265 return NT_STATUS_INVALID_INFO_CLASS;
1268 if (prhdr->ptype != expected_pkt_type) {
1269 DEBUG(3, ("cli_pipe_validate_current_pdu: Connection to %s "
1270 "got an unexpected RPC packet type - %u, not %u\n",
1271 rpccli_pipe_txt(talloc_tos(), cli),
1273 expected_pkt_type));
1274 return NT_STATUS_INVALID_INFO_CLASS;
1277 /* Do this just before return - we don't want to modify any rpc header
1278 data before now as we may have needed to do cryptographic actions on
1281 if ((prhdr->ptype == DCERPC_PKT_BIND_ACK) && !(prhdr->pfc_flags & DCERPC_PFC_FLAG_LAST)) {
1282 DEBUG(5,("cli_pipe_validate_current_pdu: bug in server (AS/U?), "
1283 "setting fragment first/last ON.\n"));
1284 prhdr->pfc_flags |= DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST;
1287 return NT_STATUS_OK;
1290 /****************************************************************************
1291 Ensure we eat the just processed pdu from the current_pdu prs_struct.
1292 Normally the frag_len and buffer size will match, but on the first trans
1293 reply there is a theoretical chance that buffer size > frag_len, so we must
1295 ****************************************************************************/
1297 static NTSTATUS cli_pipe_reset_current_pdu(struct rpc_pipe_client *cli,
1298 struct ncacn_packet_header *prhdr,
1299 prs_struct *current_pdu)
1301 uint32 current_pdu_len = prs_data_size(current_pdu);
1303 if (current_pdu_len < prhdr->frag_length) {
1304 return NT_STATUS_BUFFER_TOO_SMALL;
1308 if (current_pdu_len == (uint32)prhdr->frag_length) {
1309 prs_mem_free(current_pdu);
1310 prs_init_empty(current_pdu, prs_get_mem_context(current_pdu), UNMARSHALL);
1311 /* Make current_pdu dynamic with no memory. */
1312 prs_give_memory(current_pdu, 0, 0, True);
1313 return NT_STATUS_OK;
1317 * Oh no ! More data in buffer than we processed in current pdu.
1318 * Cheat. Move the data down and shrink the buffer.
1321 memcpy(prs_data_p(current_pdu), prs_data_p(current_pdu) + prhdr->frag_length,
1322 current_pdu_len - prhdr->frag_length);
1324 /* Remember to set the read offset back to zero. */
1325 prs_set_offset(current_pdu, 0);
1327 /* Shrink the buffer. */
1328 if (!prs_set_buffer_size(current_pdu, current_pdu_len - prhdr->frag_length)) {
1329 return NT_STATUS_BUFFER_TOO_SMALL;
1332 return NT_STATUS_OK;
1335 /****************************************************************************
1336 Call a remote api on an arbitrary pipe. takes param, data and setup buffers.
1337 ****************************************************************************/
1339 struct cli_api_pipe_state {
1340 struct event_context *ev;
1341 struct rpc_cli_transport *transport;
1346 static void cli_api_pipe_trans_done(struct tevent_req *subreq);
1347 static void cli_api_pipe_write_done(struct tevent_req *subreq);
1348 static void cli_api_pipe_read_done(struct tevent_req *subreq);
1350 static struct tevent_req *cli_api_pipe_send(TALLOC_CTX *mem_ctx,
1351 struct event_context *ev,
1352 struct rpc_cli_transport *transport,
1353 uint8_t *data, size_t data_len,
1354 uint32_t max_rdata_len)
1356 struct tevent_req *req, *subreq;
1357 struct cli_api_pipe_state *state;
1360 req = tevent_req_create(mem_ctx, &state, struct cli_api_pipe_state);
1365 state->transport = transport;
1367 if (max_rdata_len < RPC_HEADER_LEN) {
1369 * For a RPC reply we always need at least RPC_HEADER_LEN
1370 * bytes. We check this here because we will receive
1371 * RPC_HEADER_LEN bytes in cli_trans_sock_send_done.
1373 status = NT_STATUS_INVALID_PARAMETER;
1377 if (transport->trans_send != NULL) {
1378 subreq = transport->trans_send(state, ev, data, data_len,
1379 max_rdata_len, transport->priv);
1380 if (subreq == NULL) {
1383 tevent_req_set_callback(subreq, cli_api_pipe_trans_done, req);
1388 * If the transport does not provide a "trans" routine, i.e. for
1389 * example the ncacn_ip_tcp transport, do the write/read step here.
1392 subreq = rpc_write_send(state, ev, transport, data, data_len);
1393 if (subreq == NULL) {
1396 tevent_req_set_callback(subreq, cli_api_pipe_write_done, req);
1400 tevent_req_nterror(req, status);
1401 return tevent_req_post(req, ev);
1407 static void cli_api_pipe_trans_done(struct tevent_req *subreq)
1409 struct tevent_req *req = tevent_req_callback_data(
1410 subreq, struct tevent_req);
1411 struct cli_api_pipe_state *state = tevent_req_data(
1412 req, struct cli_api_pipe_state);
1415 status = state->transport->trans_recv(subreq, state, &state->rdata,
1417 TALLOC_FREE(subreq);
1418 if (!NT_STATUS_IS_OK(status)) {
1419 tevent_req_nterror(req, status);
1422 tevent_req_done(req);
1425 static void cli_api_pipe_write_done(struct tevent_req *subreq)
1427 struct tevent_req *req = tevent_req_callback_data(
1428 subreq, struct tevent_req);
1429 struct cli_api_pipe_state *state = tevent_req_data(
1430 req, struct cli_api_pipe_state);
1433 status = rpc_write_recv(subreq);
1434 TALLOC_FREE(subreq);
1435 if (!NT_STATUS_IS_OK(status)) {
1436 tevent_req_nterror(req, status);
1440 state->rdata = TALLOC_ARRAY(state, uint8_t, RPC_HEADER_LEN);
1441 if (tevent_req_nomem(state->rdata, req)) {
1446 * We don't need to use rpc_read_send here, the upper layer will cope
1447 * with a short read, transport->trans_send could also return less
1448 * than state->max_rdata_len.
1450 subreq = state->transport->read_send(state, state->ev, state->rdata,
1452 state->transport->priv);
1453 if (tevent_req_nomem(subreq, req)) {
1456 tevent_req_set_callback(subreq, cli_api_pipe_read_done, req);
1459 static void cli_api_pipe_read_done(struct tevent_req *subreq)
1461 struct tevent_req *req = tevent_req_callback_data(
1462 subreq, struct tevent_req);
1463 struct cli_api_pipe_state *state = tevent_req_data(
1464 req, struct cli_api_pipe_state);
1468 status = state->transport->read_recv(subreq, &received);
1469 TALLOC_FREE(subreq);
1470 if (!NT_STATUS_IS_OK(status)) {
1471 tevent_req_nterror(req, status);
1474 state->rdata_len = received;
1475 tevent_req_done(req);
1478 static NTSTATUS cli_api_pipe_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
1479 uint8_t **prdata, uint32_t *prdata_len)
1481 struct cli_api_pipe_state *state = tevent_req_data(
1482 req, struct cli_api_pipe_state);
1485 if (tevent_req_is_nterror(req, &status)) {
1489 *prdata = talloc_move(mem_ctx, &state->rdata);
1490 *prdata_len = state->rdata_len;
1491 return NT_STATUS_OK;
1494 /****************************************************************************
1495 Send data on an rpc pipe via trans. The prs_struct data must be the last
1496 pdu fragment of an NDR data stream.
1498 Receive response data from an rpc pipe, which may be large...
1500 Read the first fragment: unfortunately have to use SMBtrans for the first
1501 bit, then SMBreadX for subsequent bits.
1503 If first fragment received also wasn't the last fragment, continue
1504 getting fragments until we _do_ receive the last fragment.
1506 Request/Response PDU's look like the following...
1508 |<------------------PDU len----------------------------------------------->|
1509 |<-HDR_LEN-->|<--REQ LEN------>|.............|<-AUTH_HDRLEN->|<-AUTH_LEN-->|
1511 +------------+-----------------+-------------+---------------+-------------+
1512 | RPC HEADER | REQ/RESP HEADER | DATA ...... | AUTH_HDR | AUTH DATA |
1513 +------------+-----------------+-------------+---------------+-------------+
1515 Where the presence of the AUTH_HDR and AUTH DATA are dependent on the
1516 signing & sealing being negotiated.
1518 ****************************************************************************/
1520 struct rpc_api_pipe_state {
1521 struct event_context *ev;
1522 struct rpc_pipe_client *cli;
1523 uint8_t expected_pkt_type;
1525 prs_struct incoming_frag;
1526 struct ncacn_packet_header rhdr;
1528 prs_struct incoming_pdu; /* Incoming reply */
1529 uint32_t incoming_pdu_offset;
1532 static void rpc_api_pipe_trans_done(struct tevent_req *subreq);
1533 static void rpc_api_pipe_got_pdu(struct tevent_req *subreq);
1535 static struct tevent_req *rpc_api_pipe_send(TALLOC_CTX *mem_ctx,
1536 struct event_context *ev,
1537 struct rpc_pipe_client *cli,
1538 prs_struct *data, /* Outgoing PDU */
1539 uint8_t expected_pkt_type)
1541 struct tevent_req *req, *subreq;
1542 struct rpc_api_pipe_state *state;
1543 uint16_t max_recv_frag;
1546 req = tevent_req_create(mem_ctx, &state, struct rpc_api_pipe_state);
1552 state->expected_pkt_type = expected_pkt_type;
1553 state->incoming_pdu_offset = 0;
1555 prs_init_empty(&state->incoming_frag, state, UNMARSHALL);
1557 prs_init_empty(&state->incoming_pdu, state, UNMARSHALL);
1558 /* Make incoming_pdu dynamic with no memory. */
1559 prs_give_memory(&state->incoming_pdu, NULL, 0, true);
1562 * Ensure we're not sending too much.
1564 if (prs_offset(data) > cli->max_xmit_frag) {
1565 status = NT_STATUS_INVALID_PARAMETER;
1569 DEBUG(5,("rpc_api_pipe: %s\n", rpccli_pipe_txt(talloc_tos(), cli)));
1571 max_recv_frag = cli->max_recv_frag;
1574 max_recv_frag = RPC_HEADER_LEN + 10 + (sys_random() % 32);
1577 subreq = cli_api_pipe_send(state, ev, cli->transport,
1578 (uint8_t *)prs_data_p(data),
1579 prs_offset(data), max_recv_frag);
1580 if (subreq == NULL) {
1583 tevent_req_set_callback(subreq, rpc_api_pipe_trans_done, req);
1587 tevent_req_nterror(req, status);
1588 return tevent_req_post(req, ev);
1594 static void rpc_api_pipe_trans_done(struct tevent_req *subreq)
1596 struct tevent_req *req = tevent_req_callback_data(
1597 subreq, struct tevent_req);
1598 struct rpc_api_pipe_state *state = tevent_req_data(
1599 req, struct rpc_api_pipe_state);
1601 uint8_t *rdata = NULL;
1602 uint32_t rdata_len = 0;
1604 status = cli_api_pipe_recv(subreq, state, &rdata, &rdata_len);
1605 TALLOC_FREE(subreq);
1606 if (!NT_STATUS_IS_OK(status)) {
1607 DEBUG(5, ("cli_api_pipe failed: %s\n", nt_errstr(status)));
1608 tevent_req_nterror(req, status);
1612 if (rdata == NULL) {
1613 DEBUG(3,("rpc_api_pipe: %s failed to return data.\n",
1614 rpccli_pipe_txt(talloc_tos(), state->cli)));
1615 tevent_req_done(req);
1620 * This is equivalent to a talloc_steal - gives rdata to
1621 * the prs_struct state->incoming_frag.
1623 prs_give_memory(&state->incoming_frag, (char *)rdata, rdata_len, true);
1626 /* Ensure we have enough data for a pdu. */
1627 subreq = get_complete_frag_send(state, state->ev, state->cli,
1628 &state->rhdr, &state->incoming_frag);
1629 if (tevent_req_nomem(subreq, req)) {
1632 tevent_req_set_callback(subreq, rpc_api_pipe_got_pdu, req);
1635 static void rpc_api_pipe_got_pdu(struct tevent_req *subreq)
1637 struct tevent_req *req = tevent_req_callback_data(
1638 subreq, struct tevent_req);
1639 struct rpc_api_pipe_state *state = tevent_req_data(
1640 req, struct rpc_api_pipe_state);
1643 uint32_t rdata_len = 0;
1645 status = get_complete_frag_recv(subreq);
1646 TALLOC_FREE(subreq);
1647 if (!NT_STATUS_IS_OK(status)) {
1648 DEBUG(5, ("get_complete_frag failed: %s\n",
1649 nt_errstr(status)));
1650 tevent_req_nterror(req, status);
1654 status = cli_pipe_validate_current_pdu(
1655 state->cli, &state->rhdr, &state->incoming_frag,
1656 state->expected_pkt_type, &rdata, &rdata_len,
1657 &state->incoming_pdu);
1659 DEBUG(10,("rpc_api_pipe: got frag len of %u at offset %u: %s\n",
1660 (unsigned)prs_data_size(&state->incoming_frag),
1661 (unsigned)state->incoming_pdu_offset,
1662 nt_errstr(status)));
1664 if (!NT_STATUS_IS_OK(status)) {
1665 tevent_req_nterror(req, status);
1669 if ((state->rhdr.pfc_flags & DCERPC_PFC_FLAG_FIRST)
1670 && (state->rhdr.drep[0] == 0)) {
1672 * Set the data type correctly for big-endian data on the
1675 DEBUG(10,("rpc_api_pipe: On %s PDU data format is "
1677 rpccli_pipe_txt(talloc_tos(), state->cli)));
1678 prs_set_endian_data(&state->incoming_pdu, RPC_BIG_ENDIAN);
1681 * Check endianness on subsequent packets.
1683 if (state->incoming_frag.bigendian_data
1684 != state->incoming_pdu.bigendian_data) {
1685 DEBUG(0,("rpc_api_pipe: Error : Endianness changed from %s to "
1687 state->incoming_pdu.bigendian_data?"big":"little",
1688 state->incoming_frag.bigendian_data?"big":"little"));
1689 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
1693 /* Now copy the data portion out of the pdu into rbuf. */
1694 if (!prs_force_grow(&state->incoming_pdu, rdata_len)) {
1695 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
1699 memcpy(prs_data_p(&state->incoming_pdu) + state->incoming_pdu_offset,
1700 rdata, (size_t)rdata_len);
1701 state->incoming_pdu_offset += rdata_len;
1703 status = cli_pipe_reset_current_pdu(state->cli, &state->rhdr,
1704 &state->incoming_frag);
1705 if (!NT_STATUS_IS_OK(status)) {
1706 tevent_req_nterror(req, status);
1710 if (state->rhdr.pfc_flags & DCERPC_PFC_FLAG_LAST) {
1711 DEBUG(10,("rpc_api_pipe: %s returned %u bytes.\n",
1712 rpccli_pipe_txt(talloc_tos(), state->cli),
1713 (unsigned)prs_data_size(&state->incoming_pdu)));
1714 tevent_req_done(req);
1718 subreq = get_complete_frag_send(state, state->ev, state->cli,
1719 &state->rhdr, &state->incoming_frag);
1720 if (tevent_req_nomem(subreq, req)) {
1723 tevent_req_set_callback(subreq, rpc_api_pipe_got_pdu, req);
1726 static NTSTATUS rpc_api_pipe_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
1727 prs_struct *reply_pdu)
1729 struct rpc_api_pipe_state *state = tevent_req_data(
1730 req, struct rpc_api_pipe_state);
1733 if (tevent_req_is_nterror(req, &status)) {
1737 *reply_pdu = state->incoming_pdu;
1738 reply_pdu->mem_ctx = mem_ctx;
1741 * Prevent state->incoming_pdu from being freed
1742 * when state is freed.
1744 talloc_steal(mem_ctx, prs_data_p(reply_pdu));
1745 prs_init_empty(&state->incoming_pdu, state, UNMARSHALL);
1747 return NT_STATUS_OK;
1750 /*******************************************************************
1751 ********************************************************************/
1753 static NTSTATUS dcerpc_push_dcerpc_auth(TALLOC_CTX *mem_ctx,
1754 enum dcerpc_AuthType auth_type,
1755 enum dcerpc_AuthLevel auth_level,
1756 uint8_t auth_pad_length,
1757 uint32_t auth_context_id,
1758 const DATA_BLOB *credentials,
1761 struct dcerpc_auth r;
1762 enum ndr_err_code ndr_err;
1764 r.auth_type = auth_type;
1765 r.auth_level = auth_level;
1766 r.auth_pad_length = auth_pad_length;
1767 r.auth_reserved = 0;
1768 r.auth_context_id = auth_context_id;
1769 r.credentials = *credentials;
1771 ndr_err = ndr_push_struct_blob(blob, mem_ctx, &r,
1772 (ndr_push_flags_fn_t)ndr_push_dcerpc_auth);
1773 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1774 return ndr_map_error2ntstatus(ndr_err);
1777 if (DEBUGLEVEL >= 10) {
1778 NDR_PRINT_DEBUG(dcerpc_auth, &r);
1781 return NT_STATUS_OK;
1784 /*******************************************************************
1785 Creates krb5 auth bind.
1786 ********************************************************************/
1788 static NTSTATUS create_krb5_auth_bind_req(struct rpc_pipe_client *cli,
1789 enum dcerpc_AuthLevel auth_level,
1790 DATA_BLOB *auth_info)
1795 struct kerberos_auth_struct *a = cli->auth->a_u.kerberos_auth;
1796 DATA_BLOB tkt = data_blob_null;
1797 DATA_BLOB tkt_wrapped = data_blob_null;
1799 DEBUG(5, ("create_krb5_auth_bind_req: creating a service ticket for principal %s\n",
1800 a->service_principal ));
1802 /* Create the ticket for the service principal and return it in a gss-api wrapped blob. */
1804 ret = cli_krb5_get_ticket(a->service_principal, 0, &tkt,
1805 &a->session_key, (uint32)AP_OPTS_MUTUAL_REQUIRED, NULL, NULL, NULL);
1808 DEBUG(1,("create_krb5_auth_bind_req: cli_krb5_get_ticket for principal %s "
1810 a->service_principal,
1811 error_message(ret) ));
1813 data_blob_free(&tkt);
1814 return NT_STATUS_INVALID_PARAMETER;
1817 /* wrap that up in a nice GSS-API wrapping */
1818 tkt_wrapped = spnego_gen_krb5_wrap(tkt, TOK_ID_KRB_AP_REQ);
1820 data_blob_free(&tkt);
1822 status = dcerpc_push_dcerpc_auth(cli,
1823 DCERPC_AUTH_TYPE_KRB5,
1825 0, /* auth_pad_length */
1826 1, /* auth_context_id */
1829 if (!NT_STATUS_IS_OK(status)) {
1830 data_blob_free(&tkt_wrapped);
1834 DEBUG(5, ("create_krb5_auth_bind_req: Created krb5 GSS blob :\n"));
1835 dump_data(5, tkt_wrapped.data, tkt_wrapped.length);
1837 return NT_STATUS_OK;
1839 return NT_STATUS_INVALID_PARAMETER;
1843 /*******************************************************************
1844 Creates SPNEGO NTLMSSP auth bind.
1845 ********************************************************************/
1847 static NTSTATUS create_spnego_ntlmssp_auth_rpc_bind_req(struct rpc_pipe_client *cli,
1848 enum dcerpc_AuthLevel auth_level,
1849 DATA_BLOB *auth_info)
1852 DATA_BLOB null_blob = data_blob_null;
1853 DATA_BLOB request = data_blob_null;
1854 DATA_BLOB spnego_msg = data_blob_null;
1856 DEBUG(5, ("create_spnego_ntlmssp_auth_rpc_bind_req: Processing NTLMSSP Negotiate\n"));
1857 status = ntlmssp_update(cli->auth->a_u.ntlmssp_state,
1861 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1862 data_blob_free(&request);
1866 /* Wrap this in SPNEGO. */
1867 spnego_msg = gen_negTokenInit(OID_NTLMSSP, request);
1869 data_blob_free(&request);
1871 status = dcerpc_push_dcerpc_auth(cli,
1872 DCERPC_AUTH_TYPE_SPNEGO,
1874 0, /* auth_pad_length */
1875 1, /* auth_context_id */
1878 if (!NT_STATUS_IS_OK(status)) {
1879 data_blob_free(&spnego_msg);
1883 DEBUG(5, ("create_spnego_ntlmssp_auth_rpc_bind_req: NTLMSSP Negotiate:\n"));
1884 dump_data(5, spnego_msg.data, spnego_msg.length);
1886 return NT_STATUS_OK;
1889 /*******************************************************************
1890 Creates NTLMSSP auth bind.
1891 ********************************************************************/
1893 static NTSTATUS create_ntlmssp_auth_rpc_bind_req(struct rpc_pipe_client *cli,
1894 enum dcerpc_AuthLevel auth_level,
1895 DATA_BLOB *auth_info)
1898 DATA_BLOB null_blob = data_blob_null;
1899 DATA_BLOB request = data_blob_null;
1901 DEBUG(5, ("create_ntlmssp_auth_rpc_bind_req: Processing NTLMSSP Negotiate\n"));
1902 status = ntlmssp_update(cli->auth->a_u.ntlmssp_state,
1906 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1907 data_blob_free(&request);
1911 status = dcerpc_push_dcerpc_auth(cli,
1912 DCERPC_AUTH_TYPE_NTLMSSP,
1914 0, /* auth_pad_length */
1915 1, /* auth_context_id */
1918 if (!NT_STATUS_IS_OK(status)) {
1919 data_blob_free(&request);
1923 DEBUG(5, ("create_ntlmssp_auth_rpc_bind_req: NTLMSSP Negotiate:\n"));
1924 dump_data(5, request.data, request.length);
1926 return NT_STATUS_OK;
1929 /*******************************************************************
1930 Creates schannel auth bind.
1931 ********************************************************************/
1933 static NTSTATUS create_schannel_auth_rpc_bind_req(struct rpc_pipe_client *cli,
1934 enum dcerpc_AuthLevel auth_level,
1935 DATA_BLOB *auth_info)
1938 struct NL_AUTH_MESSAGE r;
1939 DATA_BLOB schannel_blob;
1941 /* Use lp_workgroup() if domain not specified */
1943 if (!cli->auth->domain || !cli->auth->domain[0]) {
1944 cli->auth->domain = talloc_strdup(cli, lp_workgroup());
1945 if (cli->auth->domain == NULL) {
1946 return NT_STATUS_NO_MEMORY;
1951 * Now marshall the data into the auth parse_struct.
1954 r.MessageType = NL_NEGOTIATE_REQUEST;
1955 r.Flags = NL_FLAG_OEM_NETBIOS_DOMAIN_NAME |
1956 NL_FLAG_OEM_NETBIOS_COMPUTER_NAME;
1957 r.oem_netbios_domain.a = cli->auth->domain;
1958 r.oem_netbios_computer.a = global_myname();
1960 status = dcerpc_push_schannel_bind(cli, &r, &schannel_blob);
1961 if (!NT_STATUS_IS_OK(status)) {
1965 status = dcerpc_push_dcerpc_auth(cli,
1966 DCERPC_AUTH_TYPE_SCHANNEL,
1968 0, /* auth_pad_length */
1969 1, /* auth_context_id */
1972 if (!NT_STATUS_IS_OK(status)) {
1976 return NT_STATUS_OK;
1979 /*******************************************************************
1980 ********************************************************************/
1982 static NTSTATUS init_dcerpc_ctx_list(TALLOC_CTX *mem_ctx,
1983 const struct ndr_syntax_id *abstract_syntax,
1984 const struct ndr_syntax_id *transfer_syntax,
1985 struct dcerpc_ctx_list **ctx_list_p)
1987 struct dcerpc_ctx_list *ctx_list;
1989 ctx_list = talloc_array(mem_ctx, struct dcerpc_ctx_list, 1);
1990 NT_STATUS_HAVE_NO_MEMORY(ctx_list);
1992 ctx_list[0].context_id = 0;
1993 ctx_list[0].num_transfer_syntaxes = 1;
1994 ctx_list[0].abstract_syntax = *abstract_syntax;
1995 ctx_list[0].transfer_syntaxes = talloc_array(ctx_list,
1996 struct ndr_syntax_id,
1997 ctx_list[0].num_transfer_syntaxes);
1998 NT_STATUS_HAVE_NO_MEMORY(ctx_list[0].transfer_syntaxes);
1999 ctx_list[0].transfer_syntaxes[0] = *transfer_syntax;
2001 *ctx_list_p = ctx_list;
2003 return NT_STATUS_OK;
2006 /*******************************************************************
2007 Creates the internals of a DCE/RPC bind request or alter context PDU.
2008 ********************************************************************/
2010 static NTSTATUS create_bind_or_alt_ctx_internal(enum dcerpc_pkt_type ptype,
2011 prs_struct *rpc_out,
2013 const struct ndr_syntax_id *abstract,
2014 const struct ndr_syntax_id *transfer,
2015 const DATA_BLOB *auth_info)
2017 uint16 auth_len = auth_info->length;
2018 uint16 frag_len = 0;
2020 union dcerpc_payload u;
2022 struct dcerpc_ctx_list *ctx_list;
2024 status = init_dcerpc_ctx_list(rpc_out->mem_ctx, abstract, transfer,
2026 if (!NT_STATUS_IS_OK(status)) {
2030 u.bind.max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
2031 u.bind.max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
2032 u.bind.assoc_group_id = 0x0;
2033 u.bind.num_contexts = 1;
2034 u.bind.ctx_list = ctx_list;
2035 u.bind.auth_info = *auth_info;
2037 /* Start building the frag length. */
2038 frag_len = RPC_HEADER_LEN + RPC_HDR_RB_LEN(&u.bind) + auth_len;
2040 status = dcerpc_push_ncacn_packet(rpc_out->mem_ctx,
2042 DCERPC_PFC_FLAG_FIRST |
2043 DCERPC_PFC_FLAG_LAST,
2045 auth_len ? auth_len - RPC_HDR_AUTH_LEN : 0,
2049 if (!NT_STATUS_IS_OK(status)) {
2050 DEBUG(0,("create_bind_or_alt_ctx_internal: failed to marshall RPC_HDR_RB.\n"));
2054 if (!prs_copy_data_in(rpc_out, (char *)blob.data, blob.length)) {
2055 return NT_STATUS_NO_MEMORY;
2058 return NT_STATUS_OK;
2061 /*******************************************************************
2062 Creates a DCE/RPC bind request.
2063 ********************************************************************/
2065 static NTSTATUS create_rpc_bind_req(struct rpc_pipe_client *cli,
2066 prs_struct *rpc_out,
2068 const struct ndr_syntax_id *abstract,
2069 const struct ndr_syntax_id *transfer,
2070 enum pipe_auth_type auth_type,
2071 enum dcerpc_AuthLevel auth_level)
2073 DATA_BLOB auth_info = data_blob_null;
2074 NTSTATUS ret = NT_STATUS_OK;
2076 switch (auth_type) {
2077 case PIPE_AUTH_TYPE_SCHANNEL:
2078 ret = create_schannel_auth_rpc_bind_req(cli, auth_level, &auth_info);
2079 if (!NT_STATUS_IS_OK(ret)) {
2084 case PIPE_AUTH_TYPE_NTLMSSP:
2085 ret = create_ntlmssp_auth_rpc_bind_req(cli, auth_level, &auth_info);
2086 if (!NT_STATUS_IS_OK(ret)) {
2091 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
2092 ret = create_spnego_ntlmssp_auth_rpc_bind_req(cli, auth_level, &auth_info);
2093 if (!NT_STATUS_IS_OK(ret)) {
2098 case PIPE_AUTH_TYPE_KRB5:
2099 ret = create_krb5_auth_bind_req(cli, auth_level, &auth_info);
2100 if (!NT_STATUS_IS_OK(ret)) {
2105 case PIPE_AUTH_TYPE_NONE:
2109 /* "Can't" happen. */
2110 return NT_STATUS_INVALID_INFO_CLASS;
2113 ret = create_bind_or_alt_ctx_internal(DCERPC_PKT_BIND,
2122 /*******************************************************************
2123 Create and add the NTLMSSP sign/seal auth header and data.
2124 ********************************************************************/
2126 static NTSTATUS add_ntlmssp_auth_footer(struct rpc_pipe_client *cli,
2127 uint32 ss_padding_len,
2128 prs_struct *outgoing_pdu)
2130 RPC_HDR_AUTH auth_info;
2132 DATA_BLOB auth_blob = data_blob_null;
2133 uint16 data_and_pad_len = prs_offset(outgoing_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN;
2136 if (!cli->auth->a_u.ntlmssp_state) {
2137 return NT_STATUS_INVALID_PARAMETER;
2140 frame = talloc_stackframe();
2142 /* Init and marshall the auth header. */
2143 init_rpc_hdr_auth(&auth_info,
2144 map_pipe_auth_type_to_rpc_auth_type(
2145 cli->auth->auth_type),
2146 cli->auth->auth_level,
2148 1 /* context id. */);
2150 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, outgoing_pdu, 0)) {
2151 DEBUG(0,("add_ntlmssp_auth_footer: failed to marshall RPC_HDR_AUTH.\n"));
2153 return NT_STATUS_NO_MEMORY;
2156 switch (cli->auth->auth_level) {
2157 case DCERPC_AUTH_LEVEL_PRIVACY:
2158 /* Data portion is encrypted. */
2159 status = ntlmssp_seal_packet(cli->auth->a_u.ntlmssp_state,
2161 (unsigned char *)prs_data_p(outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
2163 (unsigned char *)prs_data_p(outgoing_pdu),
2164 (size_t)prs_offset(outgoing_pdu),
2166 if (!NT_STATUS_IS_OK(status)) {
2172 case DCERPC_AUTH_LEVEL_INTEGRITY:
2173 /* Data is signed. */
2174 status = ntlmssp_sign_packet(cli->auth->a_u.ntlmssp_state,
2176 (unsigned char *)prs_data_p(outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
2178 (unsigned char *)prs_data_p(outgoing_pdu),
2179 (size_t)prs_offset(outgoing_pdu),
2181 if (!NT_STATUS_IS_OK(status)) {
2189 smb_panic("bad auth level");
2191 return NT_STATUS_INVALID_PARAMETER;
2194 /* Finally marshall the blob. */
2196 if (!prs_copy_data_in(outgoing_pdu, (const char *)auth_blob.data, NTLMSSP_SIG_SIZE)) {
2197 DEBUG(0,("add_ntlmssp_auth_footer: failed to add %u bytes auth blob.\n",
2198 (unsigned int)NTLMSSP_SIG_SIZE));
2200 return NT_STATUS_NO_MEMORY;
2204 return NT_STATUS_OK;
2207 /*******************************************************************
2208 Create and add the schannel sign/seal auth header and data.
2209 ********************************************************************/
2211 static NTSTATUS add_schannel_auth_footer(struct rpc_pipe_client *cli,
2212 uint32 ss_padding_len,
2213 prs_struct *outgoing_pdu)
2215 RPC_HDR_AUTH auth_info;
2216 struct schannel_state *sas = cli->auth->a_u.schannel_auth;
2217 char *data_p = prs_data_p(outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN;
2218 size_t data_and_pad_len = prs_offset(outgoing_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN;
2223 return NT_STATUS_INVALID_PARAMETER;
2226 /* Init and marshall the auth header. */
2227 init_rpc_hdr_auth(&auth_info,
2228 map_pipe_auth_type_to_rpc_auth_type(cli->auth->auth_type),
2229 cli->auth->auth_level,
2231 1 /* context id. */);
2233 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, outgoing_pdu, 0)) {
2234 DEBUG(0,("add_schannel_auth_footer: failed to marshall RPC_HDR_AUTH.\n"));
2235 return NT_STATUS_NO_MEMORY;
2238 DEBUG(10,("add_schannel_auth_footer: SCHANNEL seq_num=%d\n",
2241 switch (cli->auth->auth_level) {
2242 case DCERPC_AUTH_LEVEL_PRIVACY:
2243 status = netsec_outgoing_packet(sas,
2250 case DCERPC_AUTH_LEVEL_INTEGRITY:
2251 status = netsec_outgoing_packet(sas,
2259 status = NT_STATUS_INTERNAL_ERROR;
2263 if (!NT_STATUS_IS_OK(status)) {
2264 DEBUG(1,("add_schannel_auth_footer: failed to process packet: %s\n",
2265 nt_errstr(status)));
2269 if (DEBUGLEVEL >= 10) {
2270 dump_NL_AUTH_SIGNATURE(talloc_tos(), &blob);
2273 /* Finally marshall the blob. */
2274 if (!prs_copy_data_in(outgoing_pdu, (const char *)blob.data, blob.length)) {
2275 return NT_STATUS_NO_MEMORY;
2278 return NT_STATUS_OK;
2281 /*******************************************************************
2282 Calculate how much data we're going to send in this packet, also
2283 work out any sign/seal padding length.
2284 ********************************************************************/
2286 static uint32 calculate_data_len_tosend(struct rpc_pipe_client *cli,
2290 uint32 *p_ss_padding)
2292 uint32 data_space, data_len;
2295 if ((data_left > 0) && (sys_random() % 2)) {
2296 data_left = MAX(data_left/2, 1);
2300 switch (cli->auth->auth_level) {
2301 case DCERPC_AUTH_LEVEL_NONE:
2302 case DCERPC_AUTH_LEVEL_CONNECT:
2303 data_space = cli->max_xmit_frag - RPC_HEADER_LEN - RPC_HDR_REQ_LEN;
2304 data_len = MIN(data_space, data_left);
2307 *p_frag_len = RPC_HEADER_LEN + RPC_HDR_REQ_LEN + data_len;
2310 case DCERPC_AUTH_LEVEL_INTEGRITY:
2311 case DCERPC_AUTH_LEVEL_PRIVACY:
2312 /* Treat the same for all authenticated rpc requests. */
2313 switch(cli->auth->auth_type) {
2314 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
2315 case PIPE_AUTH_TYPE_NTLMSSP:
2316 *p_auth_len = NTLMSSP_SIG_SIZE;
2318 case PIPE_AUTH_TYPE_SCHANNEL:
2319 *p_auth_len = RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
2322 smb_panic("bad auth type");
2326 data_space = cli->max_xmit_frag - RPC_HEADER_LEN - RPC_HDR_REQ_LEN -
2327 RPC_HDR_AUTH_LEN - *p_auth_len;
2329 data_len = MIN(data_space, data_left);
2331 if (data_len % CLIENT_NDR_PADDING_SIZE) {
2332 *p_ss_padding = CLIENT_NDR_PADDING_SIZE - (data_len % CLIENT_NDR_PADDING_SIZE);
2334 *p_frag_len = RPC_HEADER_LEN + RPC_HDR_REQ_LEN + /* Normal headers. */
2335 data_len + *p_ss_padding + /* data plus padding. */
2336 RPC_HDR_AUTH_LEN + *p_auth_len; /* Auth header and auth data. */
2340 smb_panic("bad auth level");
2346 /*******************************************************************
2348 Does an rpc request on a pipe. Incoming data is NDR encoded in in_data.
2349 Reply is NDR encoded in out_data. Splits the data stream into RPC PDU's
2350 and deals with signing/sealing details.
2351 ********************************************************************/
2353 struct rpc_api_pipe_req_state {
2354 struct event_context *ev;
2355 struct rpc_pipe_client *cli;
2358 prs_struct *req_data;
2359 uint32_t req_data_sent;
2360 prs_struct outgoing_frag;
2361 prs_struct reply_pdu;
2364 static void rpc_api_pipe_req_write_done(struct tevent_req *subreq);
2365 static void rpc_api_pipe_req_done(struct tevent_req *subreq);
2366 static NTSTATUS prepare_next_frag(struct rpc_api_pipe_req_state *state,
2367 bool *is_last_frag);
2369 struct tevent_req *rpc_api_pipe_req_send(TALLOC_CTX *mem_ctx,
2370 struct event_context *ev,
2371 struct rpc_pipe_client *cli,
2373 prs_struct *req_data)
2375 struct tevent_req *req, *subreq;
2376 struct rpc_api_pipe_req_state *state;
2380 req = tevent_req_create(mem_ctx, &state,
2381 struct rpc_api_pipe_req_state);
2387 state->op_num = op_num;
2388 state->req_data = req_data;
2389 state->req_data_sent = 0;
2390 state->call_id = get_rpc_call_id();
2392 if (cli->max_xmit_frag
2393 < RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_MAX_SIGN_SIZE) {
2394 /* Server is screwed up ! */
2395 status = NT_STATUS_INVALID_PARAMETER;
2399 prs_init_empty(&state->reply_pdu, state, UNMARSHALL);
2401 if (!prs_init(&state->outgoing_frag, cli->max_xmit_frag,
2406 status = prepare_next_frag(state, &is_last_frag);
2407 if (!NT_STATUS_IS_OK(status)) {
2412 subreq = rpc_api_pipe_send(state, ev, state->cli,
2413 &state->outgoing_frag,
2414 DCERPC_PKT_RESPONSE);
2415 if (subreq == NULL) {
2418 tevent_req_set_callback(subreq, rpc_api_pipe_req_done, req);
2420 subreq = rpc_write_send(
2421 state, ev, cli->transport,
2422 (uint8_t *)prs_data_p(&state->outgoing_frag),
2423 prs_offset(&state->outgoing_frag));
2424 if (subreq == NULL) {
2427 tevent_req_set_callback(subreq, rpc_api_pipe_req_write_done,
2433 tevent_req_nterror(req, status);
2434 return tevent_req_post(req, ev);
2440 static NTSTATUS prepare_next_frag(struct rpc_api_pipe_req_state *state,
2443 uint32_t data_sent_thistime;
2447 uint32_t ss_padding;
2449 char pad[8] = { 0, };
2451 union dcerpc_payload u;
2454 data_left = prs_offset(state->req_data) - state->req_data_sent;
2456 data_sent_thistime = calculate_data_len_tosend(
2457 state->cli, data_left, &frag_len, &auth_len, &ss_padding);
2459 if (state->req_data_sent == 0) {
2460 flags = DCERPC_PFC_FLAG_FIRST;
2463 if (data_sent_thistime == data_left) {
2464 flags |= DCERPC_PFC_FLAG_LAST;
2467 if (!prs_set_offset(&state->outgoing_frag, 0)) {
2468 return NT_STATUS_NO_MEMORY;
2471 ZERO_STRUCT(u.request);
2473 u.request.alloc_hint = prs_offset(state->req_data);
2474 u.request.context_id = 0;
2475 u.request.opnum = state->op_num;
2477 status = dcerpc_push_ncacn_packet(prs_get_mem_context(&state->outgoing_frag),
2485 if (!NT_STATUS_IS_OK(status)) {
2489 if (!prs_copy_data_in(&state->outgoing_frag, (const char *)blob.data, blob.length)) {
2490 return NT_STATUS_NO_MEMORY;
2493 /* Copy in the data, plus any ss padding. */
2494 if (!prs_append_some_prs_data(&state->outgoing_frag,
2495 state->req_data, state->req_data_sent,
2496 data_sent_thistime)) {
2497 return NT_STATUS_NO_MEMORY;
2500 /* Copy the sign/seal padding data. */
2501 if (!prs_copy_data_in(&state->outgoing_frag, pad, ss_padding)) {
2502 return NT_STATUS_NO_MEMORY;
2505 /* Generate any auth sign/seal and add the auth footer. */
2506 switch (state->cli->auth->auth_type) {
2507 case PIPE_AUTH_TYPE_NONE:
2508 status = NT_STATUS_OK;
2510 case PIPE_AUTH_TYPE_NTLMSSP:
2511 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
2512 status = add_ntlmssp_auth_footer(state->cli, ss_padding,
2513 &state->outgoing_frag);
2515 case PIPE_AUTH_TYPE_SCHANNEL:
2516 status = add_schannel_auth_footer(state->cli, ss_padding,
2517 &state->outgoing_frag);
2520 status = NT_STATUS_INVALID_PARAMETER;
2524 state->req_data_sent += data_sent_thistime;
2525 *is_last_frag = ((flags & DCERPC_PFC_FLAG_LAST) != 0);
2530 static void rpc_api_pipe_req_write_done(struct tevent_req *subreq)
2532 struct tevent_req *req = tevent_req_callback_data(
2533 subreq, struct tevent_req);
2534 struct rpc_api_pipe_req_state *state = tevent_req_data(
2535 req, struct rpc_api_pipe_req_state);
2539 status = rpc_write_recv(subreq);
2540 TALLOC_FREE(subreq);
2541 if (!NT_STATUS_IS_OK(status)) {
2542 tevent_req_nterror(req, status);
2546 status = prepare_next_frag(state, &is_last_frag);
2547 if (!NT_STATUS_IS_OK(status)) {
2548 tevent_req_nterror(req, status);
2553 subreq = rpc_api_pipe_send(state, state->ev, state->cli,
2554 &state->outgoing_frag,
2555 DCERPC_PKT_RESPONSE);
2556 if (tevent_req_nomem(subreq, req)) {
2559 tevent_req_set_callback(subreq, rpc_api_pipe_req_done, req);
2561 subreq = rpc_write_send(
2563 state->cli->transport,
2564 (uint8_t *)prs_data_p(&state->outgoing_frag),
2565 prs_offset(&state->outgoing_frag));
2566 if (tevent_req_nomem(subreq, req)) {
2569 tevent_req_set_callback(subreq, rpc_api_pipe_req_write_done,
2574 static void rpc_api_pipe_req_done(struct tevent_req *subreq)
2576 struct tevent_req *req = tevent_req_callback_data(
2577 subreq, struct tevent_req);
2578 struct rpc_api_pipe_req_state *state = tevent_req_data(
2579 req, struct rpc_api_pipe_req_state);
2582 status = rpc_api_pipe_recv(subreq, state, &state->reply_pdu);
2583 TALLOC_FREE(subreq);
2584 if (!NT_STATUS_IS_OK(status)) {
2585 tevent_req_nterror(req, status);
2588 tevent_req_done(req);
2591 NTSTATUS rpc_api_pipe_req_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
2592 prs_struct *reply_pdu)
2594 struct rpc_api_pipe_req_state *state = tevent_req_data(
2595 req, struct rpc_api_pipe_req_state);
2598 if (tevent_req_is_nterror(req, &status)) {
2600 * We always have to initialize to reply pdu, even if there is
2601 * none. The rpccli_* caller routines expect this.
2603 prs_init_empty(reply_pdu, mem_ctx, UNMARSHALL);
2607 *reply_pdu = state->reply_pdu;
2608 reply_pdu->mem_ctx = mem_ctx;
2611 * Prevent state->req_pdu from being freed
2612 * when state is freed.
2614 talloc_steal(mem_ctx, prs_data_p(reply_pdu));
2615 prs_init_empty(&state->reply_pdu, state, UNMARSHALL);
2617 return NT_STATUS_OK;
2621 /****************************************************************************
2622 Set the handle state.
2623 ****************************************************************************/
2625 static bool rpc_pipe_set_hnd_state(struct rpc_pipe_client *cli,
2626 const char *pipe_name, uint16 device_state)
2628 bool state_set = False;
2630 uint16 setup[2]; /* only need 2 uint16 setup parameters */
2631 char *rparam = NULL;
2633 uint32 rparam_len, rdata_len;
2635 if (pipe_name == NULL)
2638 DEBUG(5,("Set Handle state Pipe[%x]: %s - device state:%x\n",
2639 cli->fnum, pipe_name, device_state));
2641 /* create parameters: device state */
2642 SSVAL(param, 0, device_state);
2644 /* create setup parameters. */
2646 setup[1] = cli->fnum; /* pipe file handle. got this from an SMBOpenX. */
2648 /* send the data on \PIPE\ */
2649 if (cli_api_pipe(cli->cli, "\\PIPE\\",
2650 setup, 2, 0, /* setup, length, max */
2651 param, 2, 0, /* param, length, max */
2652 NULL, 0, 1024, /* data, length, max */
2653 &rparam, &rparam_len, /* return param, length */
2654 &rdata, &rdata_len)) /* return data, length */
2656 DEBUG(5, ("Set Handle state: return OK\n"));
2667 /****************************************************************************
2668 Check the rpc bind acknowledge response.
2669 ****************************************************************************/
2671 static bool check_bind_response(const struct dcerpc_bind_ack *r,
2672 const struct ndr_syntax_id *transfer)
2674 struct dcerpc_ack_ctx ctx;
2676 if (r->secondary_address_size == 0) {
2677 DEBUG(4,("Ignoring length check -- ASU bug (server didn't fill in the pipe name correctly)"));
2680 if (r->num_results < 1 || !r->ctx_list) {
2684 ctx = r->ctx_list[0];
2686 /* check the transfer syntax */
2687 if ((ctx.syntax.if_version != transfer->if_version) ||
2688 (memcmp(&ctx.syntax.uuid, &transfer->uuid, sizeof(transfer->uuid)) !=0)) {
2689 DEBUG(2,("bind_rpc_pipe: transfer syntax differs\n"));
2693 if (r->num_results != 0x1 || ctx.result != 0) {
2694 DEBUG(2,("bind_rpc_pipe: bind denied results: %d reason: %x\n",
2695 r->num_results, ctx.reason));
2698 DEBUG(5,("check_bind_response: accepted!\n"));
2702 /*******************************************************************
2703 Creates a DCE/RPC bind authentication response.
2704 This is the packet that is sent back to the server once we
2705 have received a BIND-ACK, to finish the third leg of
2706 the authentication handshake.
2707 ********************************************************************/
2709 static NTSTATUS create_rpc_bind_auth3(struct rpc_pipe_client *cli,
2711 enum pipe_auth_type auth_type,
2712 enum dcerpc_AuthLevel auth_level,
2713 DATA_BLOB *pauth_blob,
2714 prs_struct *rpc_out)
2716 uint16_t auth_len = pauth_blob->length;
2717 uint16_t frag_len = 0;
2719 union dcerpc_payload u;
2724 status = dcerpc_push_dcerpc_auth(prs_get_mem_context(rpc_out),
2725 map_pipe_auth_type_to_rpc_auth_type(auth_type),
2727 0, /* auth_pad_length */
2728 1, /* auth_context_id */
2730 &u.auth3.auth_info);
2731 if (!NT_STATUS_IS_OK(status)) {
2735 /* Start building the frag length. */
2736 frag_len = RPC_HEADER_LEN + 4 /* pad */ + RPC_HDR_AUTH_LEN + auth_len;
2738 status = dcerpc_push_ncacn_packet(prs_get_mem_context(rpc_out),
2740 DCERPC_PFC_FLAG_FIRST |
2741 DCERPC_PFC_FLAG_LAST,
2743 auth_len ? auth_len - RPC_HDR_AUTH_LEN : 0,
2747 if (!NT_STATUS_IS_OK(status)) {
2748 DEBUG(0,("create_bind_or_alt_ctx_internal: failed to marshall RPC_HDR_RB.\n"));
2752 if (!prs_copy_data_in(rpc_out, (char *)blob.data, blob.length)) {
2753 return NT_STATUS_NO_MEMORY;
2756 return NT_STATUS_OK;
2759 /*******************************************************************
2760 Creates a DCE/RPC bind alter context authentication request which
2761 may contain a spnego auth blobl
2762 ********************************************************************/
2764 static NTSTATUS create_rpc_alter_context(uint32 rpc_call_id,
2765 const struct ndr_syntax_id *abstract,
2766 const struct ndr_syntax_id *transfer,
2767 enum dcerpc_AuthLevel auth_level,
2768 const DATA_BLOB *pauth_blob, /* spnego auth blob already created. */
2769 prs_struct *rpc_out)
2771 DATA_BLOB auth_info;
2774 status = dcerpc_push_dcerpc_auth(prs_get_mem_context(rpc_out),
2775 DCERPC_AUTH_TYPE_SPNEGO,
2777 0, /* auth_pad_length */
2778 1, /* auth_context_id */
2781 if (!NT_STATUS_IS_OK(status)) {
2786 status = create_bind_or_alt_ctx_internal(DCERPC_PKT_ALTER,
2792 if (!NT_STATUS_IS_OK(status)) {
2799 /****************************************************************************
2801 ****************************************************************************/
2803 struct rpc_pipe_bind_state {
2804 struct event_context *ev;
2805 struct rpc_pipe_client *cli;
2807 uint32_t rpc_call_id;
2810 static void rpc_pipe_bind_step_one_done(struct tevent_req *subreq);
2811 static NTSTATUS rpc_finish_auth3_bind_send(struct tevent_req *req,
2812 struct rpc_pipe_bind_state *state,
2813 struct ncacn_packet *r,
2814 prs_struct *reply_pdu);
2815 static void rpc_bind_auth3_write_done(struct tevent_req *subreq);
2816 static NTSTATUS rpc_finish_spnego_ntlmssp_bind_send(struct tevent_req *req,
2817 struct rpc_pipe_bind_state *state,
2818 struct ncacn_packet *r,
2819 prs_struct *reply_pdu);
2820 static void rpc_bind_ntlmssp_api_done(struct tevent_req *subreq);
2822 struct tevent_req *rpc_pipe_bind_send(TALLOC_CTX *mem_ctx,
2823 struct event_context *ev,
2824 struct rpc_pipe_client *cli,
2825 struct cli_pipe_auth_data *auth)
2827 struct tevent_req *req, *subreq;
2828 struct rpc_pipe_bind_state *state;
2831 req = tevent_req_create(mem_ctx, &state, struct rpc_pipe_bind_state);
2836 DEBUG(5,("Bind RPC Pipe: %s auth_type %u, auth_level %u\n",
2837 rpccli_pipe_txt(talloc_tos(), cli),
2838 (unsigned int)auth->auth_type,
2839 (unsigned int)auth->auth_level ));
2843 state->rpc_call_id = get_rpc_call_id();
2845 prs_init_empty(&state->rpc_out, state, MARSHALL);
2847 cli->auth = talloc_move(cli, &auth);
2849 /* Marshall the outgoing data. */
2850 status = create_rpc_bind_req(cli, &state->rpc_out,
2852 &cli->abstract_syntax,
2853 &cli->transfer_syntax,
2854 cli->auth->auth_type,
2855 cli->auth->auth_level);
2857 if (!NT_STATUS_IS_OK(status)) {
2861 subreq = rpc_api_pipe_send(state, ev, cli, &state->rpc_out,
2862 DCERPC_PKT_BIND_ACK);
2863 if (subreq == NULL) {
2866 tevent_req_set_callback(subreq, rpc_pipe_bind_step_one_done, req);
2870 tevent_req_nterror(req, status);
2871 return tevent_req_post(req, ev);
2877 static void rpc_pipe_bind_step_one_done(struct tevent_req *subreq)
2879 struct tevent_req *req = tevent_req_callback_data(
2880 subreq, struct tevent_req);
2881 struct rpc_pipe_bind_state *state = tevent_req_data(
2882 req, struct rpc_pipe_bind_state);
2883 prs_struct reply_pdu;
2885 struct ncacn_packet r;
2888 status = rpc_api_pipe_recv(subreq, talloc_tos(), &reply_pdu);
2889 TALLOC_FREE(subreq);
2890 if (!NT_STATUS_IS_OK(status)) {
2891 DEBUG(3, ("rpc_pipe_bind: %s bind request returned %s\n",
2892 rpccli_pipe_txt(talloc_tos(), state->cli),
2893 nt_errstr(status)));
2894 tevent_req_nterror(req, status);
2898 blob = data_blob_const(prs_data_p(&reply_pdu),
2899 prs_data_size(&reply_pdu));
2901 status = dcerpc_pull_ncacn_packet(talloc_tos(), &blob, &r);
2902 if (!NT_STATUS_IS_OK(status)) {
2903 tevent_req_nterror(req, status);
2907 if (!check_bind_response(&r.u.bind_ack, &state->cli->transfer_syntax)) {
2908 DEBUG(2, ("rpc_pipe_bind: check_bind_response failed.\n"));
2909 tevent_req_nterror(req, NT_STATUS_BUFFER_TOO_SMALL);
2913 state->cli->max_xmit_frag = r.u.bind_ack.max_xmit_frag;
2914 state->cli->max_recv_frag = r.u.bind_ack.max_recv_frag;
2917 * For authenticated binds we may need to do 3 or 4 leg binds.
2920 switch(state->cli->auth->auth_type) {
2922 case PIPE_AUTH_TYPE_NONE:
2923 case PIPE_AUTH_TYPE_SCHANNEL:
2924 /* Bind complete. */
2925 tevent_req_done(req);
2928 case PIPE_AUTH_TYPE_NTLMSSP:
2929 /* Need to send AUTH3 packet - no reply. */
2930 status = rpc_finish_auth3_bind_send(req, state, &r,
2932 if (!NT_STATUS_IS_OK(status)) {
2933 tevent_req_nterror(req, status);
2937 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
2938 /* Need to send alter context request and reply. */
2939 status = rpc_finish_spnego_ntlmssp_bind_send(req, state, &r,
2941 if (!NT_STATUS_IS_OK(status)) {
2942 tevent_req_nterror(req, status);
2946 case PIPE_AUTH_TYPE_KRB5:
2950 DEBUG(0,("cli_finish_bind_auth: unknown auth type %u\n",
2951 (unsigned int)state->cli->auth->auth_type));
2952 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
2956 static NTSTATUS rpc_finish_auth3_bind_send(struct tevent_req *req,
2957 struct rpc_pipe_bind_state *state,
2958 struct ncacn_packet *r,
2959 prs_struct *reply_pdu)
2961 DATA_BLOB server_response = data_blob_null;
2962 DATA_BLOB client_reply = data_blob_null;
2963 struct rpc_hdr_auth_info hdr_auth;
2964 struct tevent_req *subreq;
2967 if ((r->auth_length == 0)
2968 || (r->frag_length < r->auth_length + RPC_HDR_AUTH_LEN)) {
2969 return NT_STATUS_INVALID_PARAMETER;
2972 if (!prs_set_offset(
2974 r->frag_length - r->auth_length - RPC_HDR_AUTH_LEN)) {
2975 return NT_STATUS_INVALID_PARAMETER;
2978 if (!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, reply_pdu, 0)) {
2979 return NT_STATUS_INVALID_PARAMETER;
2982 /* TODO - check auth_type/auth_level match. */
2984 server_response = data_blob_talloc(talloc_tos(), NULL, r->auth_length);
2985 prs_copy_data_out((char *)server_response.data, reply_pdu,
2988 status = ntlmssp_update(state->cli->auth->a_u.ntlmssp_state,
2989 server_response, &client_reply);
2991 if (!NT_STATUS_IS_OK(status)) {
2992 DEBUG(0, ("rpc_finish_auth3_bind: NTLMSSP update using server "
2993 "blob failed: %s.\n", nt_errstr(status)));
2997 prs_init_empty(&state->rpc_out, talloc_tos(), MARSHALL);
2999 status = create_rpc_bind_auth3(state->cli, state->rpc_call_id,
3000 state->cli->auth->auth_type,
3001 state->cli->auth->auth_level,
3002 &client_reply, &state->rpc_out);
3003 data_blob_free(&client_reply);
3005 if (!NT_STATUS_IS_OK(status)) {
3009 subreq = rpc_write_send(state, state->ev, state->cli->transport,
3010 (uint8_t *)prs_data_p(&state->rpc_out),
3011 prs_offset(&state->rpc_out));
3012 if (subreq == NULL) {
3013 return NT_STATUS_NO_MEMORY;
3015 tevent_req_set_callback(subreq, rpc_bind_auth3_write_done, req);
3016 return NT_STATUS_OK;
3019 static void rpc_bind_auth3_write_done(struct tevent_req *subreq)
3021 struct tevent_req *req = tevent_req_callback_data(
3022 subreq, struct tevent_req);
3025 status = rpc_write_recv(subreq);
3026 TALLOC_FREE(subreq);
3027 if (!NT_STATUS_IS_OK(status)) {
3028 tevent_req_nterror(req, status);
3031 tevent_req_done(req);
3034 static NTSTATUS rpc_finish_spnego_ntlmssp_bind_send(struct tevent_req *req,
3035 struct rpc_pipe_bind_state *state,
3036 struct ncacn_packet *r,
3037 prs_struct *reply_pdu)
3039 DATA_BLOB server_spnego_response = data_blob_null;
3040 DATA_BLOB server_ntlm_response = data_blob_null;
3041 DATA_BLOB client_reply = data_blob_null;
3042 DATA_BLOB tmp_blob = data_blob_null;
3043 RPC_HDR_AUTH hdr_auth;
3044 struct tevent_req *subreq;
3047 if ((r->auth_length == 0)
3048 || (r->frag_length < r->auth_length + RPC_HDR_AUTH_LEN)) {
3049 return NT_STATUS_INVALID_PARAMETER;
3052 /* Process the returned NTLMSSP blob first. */
3053 if (!prs_set_offset(
3055 r->frag_length - r->auth_length - RPC_HDR_AUTH_LEN)) {
3056 return NT_STATUS_INVALID_PARAMETER;
3059 if (!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, reply_pdu, 0)) {
3060 return NT_STATUS_INVALID_PARAMETER;
3063 server_spnego_response = data_blob(NULL, r->auth_length);
3064 prs_copy_data_out((char *)server_spnego_response.data,
3065 reply_pdu, r->auth_length);
3068 * The server might give us back two challenges - tmp_blob is for the
3071 if (!spnego_parse_challenge(server_spnego_response,
3072 &server_ntlm_response, &tmp_blob)) {
3073 data_blob_free(&server_spnego_response);
3074 data_blob_free(&server_ntlm_response);
3075 data_blob_free(&tmp_blob);
3076 return NT_STATUS_INVALID_PARAMETER;
3079 /* We're finished with the server spnego response and the tmp_blob. */
3080 data_blob_free(&server_spnego_response);
3081 data_blob_free(&tmp_blob);
3083 status = ntlmssp_update(state->cli->auth->a_u.ntlmssp_state,
3084 server_ntlm_response, &client_reply);
3086 /* Finished with the server_ntlm response */
3087 data_blob_free(&server_ntlm_response);
3089 if (!NT_STATUS_IS_OK(status)) {
3090 DEBUG(0, ("rpc_finish_spnego_ntlmssp_bind: NTLMSSP update "
3091 "using server blob failed.\n"));
3092 data_blob_free(&client_reply);
3096 /* SPNEGO wrap the client reply. */
3097 tmp_blob = spnego_gen_auth(client_reply);
3098 data_blob_free(&client_reply);
3099 client_reply = tmp_blob;
3100 tmp_blob = data_blob_null;
3102 /* Now prepare the alter context pdu. */
3103 prs_init_empty(&state->rpc_out, state, MARSHALL);
3105 status = create_rpc_alter_context(state->rpc_call_id,
3106 &state->cli->abstract_syntax,
3107 &state->cli->transfer_syntax,
3108 state->cli->auth->auth_level,
3111 data_blob_free(&client_reply);
3113 if (!NT_STATUS_IS_OK(status)) {
3117 subreq = rpc_api_pipe_send(state, state->ev, state->cli,
3118 &state->rpc_out, DCERPC_PKT_ALTER_RESP);
3119 if (subreq == NULL) {
3120 return NT_STATUS_NO_MEMORY;
3122 tevent_req_set_callback(subreq, rpc_bind_ntlmssp_api_done, req);
3123 return NT_STATUS_OK;
3126 static void rpc_bind_ntlmssp_api_done(struct tevent_req *subreq)
3128 struct tevent_req *req = tevent_req_callback_data(
3129 subreq, struct tevent_req);
3130 struct rpc_pipe_bind_state *state = tevent_req_data(
3131 req, struct rpc_pipe_bind_state);
3132 DATA_BLOB server_spnego_response = data_blob_null;
3133 DATA_BLOB tmp_blob = data_blob_null;
3134 prs_struct reply_pdu;
3135 struct ncacn_packet_header hdr;
3136 struct rpc_hdr_auth_info hdr_auth;
3139 status = rpc_api_pipe_recv(subreq, talloc_tos(), &reply_pdu);
3140 TALLOC_FREE(subreq);
3141 if (!NT_STATUS_IS_OK(status)) {
3142 tevent_req_nterror(req, status);
3146 status = parse_rpc_header(state->cli, &hdr, &reply_pdu);
3147 if (!NT_STATUS_IS_OK(status)) {
3148 tevent_req_nterror(req, status);
3152 if (!prs_set_offset(
3154 hdr.frag_length - hdr.auth_length - RPC_HDR_AUTH_LEN)) {
3155 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
3159 if (!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, &reply_pdu, 0)) {
3160 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
3164 server_spnego_response = data_blob(NULL, hdr.auth_length);
3165 prs_copy_data_out((char *)server_spnego_response.data, &reply_pdu,
3168 /* Check we got a valid auth response. */
3169 if (!spnego_parse_auth_response(server_spnego_response, NT_STATUS_OK,
3170 OID_NTLMSSP, &tmp_blob)) {
3171 data_blob_free(&server_spnego_response);
3172 data_blob_free(&tmp_blob);
3173 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
3177 data_blob_free(&server_spnego_response);
3178 data_blob_free(&tmp_blob);
3180 DEBUG(5,("rpc_finish_spnego_ntlmssp_bind: alter context request to "
3181 "%s.\n", rpccli_pipe_txt(talloc_tos(), state->cli)));
3182 tevent_req_done(req);
3185 NTSTATUS rpc_pipe_bind_recv(struct tevent_req *req)
3187 return tevent_req_simple_recv_ntstatus(req);
3190 NTSTATUS rpc_pipe_bind(struct rpc_pipe_client *cli,
3191 struct cli_pipe_auth_data *auth)
3193 TALLOC_CTX *frame = talloc_stackframe();
3194 struct event_context *ev;
3195 struct tevent_req *req;
3196 NTSTATUS status = NT_STATUS_OK;
3198 ev = event_context_init(frame);
3200 status = NT_STATUS_NO_MEMORY;
3204 req = rpc_pipe_bind_send(frame, ev, cli, auth);
3206 status = NT_STATUS_NO_MEMORY;
3210 if (!tevent_req_poll(req, ev)) {
3211 status = map_nt_error_from_unix(errno);
3215 status = rpc_pipe_bind_recv(req);
3221 #define RPCCLI_DEFAULT_TIMEOUT 10000 /* 10 seconds. */
3223 unsigned int rpccli_set_timeout(struct rpc_pipe_client *rpc_cli,
3224 unsigned int timeout)
3228 if (rpc_cli->transport == NULL) {
3229 return RPCCLI_DEFAULT_TIMEOUT;
3232 if (rpc_cli->transport->set_timeout == NULL) {
3233 return RPCCLI_DEFAULT_TIMEOUT;
3236 old = rpc_cli->transport->set_timeout(rpc_cli->transport->priv, timeout);
3238 return RPCCLI_DEFAULT_TIMEOUT;
3244 bool rpccli_is_connected(struct rpc_pipe_client *rpc_cli)
3246 if (rpc_cli == NULL) {
3250 if (rpc_cli->transport == NULL) {
3254 return rpc_cli->transport->is_connected(rpc_cli->transport->priv);
3257 bool rpccli_get_pwd_hash(struct rpc_pipe_client *rpc_cli, uint8_t nt_hash[16])
3259 struct cli_state *cli;
3261 if ((rpc_cli->auth->auth_type == PIPE_AUTH_TYPE_NTLMSSP)
3262 || (rpc_cli->auth->auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP)) {
3263 memcpy(nt_hash, rpc_cli->auth->a_u.ntlmssp_state->nt_hash, 16);
3267 cli = rpc_pipe_np_smb_conn(rpc_cli);
3271 E_md4hash(cli->password ? cli->password : "", nt_hash);
3275 NTSTATUS rpccli_anon_bind_data(TALLOC_CTX *mem_ctx,
3276 struct cli_pipe_auth_data **presult)
3278 struct cli_pipe_auth_data *result;
3280 result = talloc(mem_ctx, struct cli_pipe_auth_data);
3281 if (result == NULL) {
3282 return NT_STATUS_NO_MEMORY;
3285 result->auth_type = PIPE_AUTH_TYPE_NONE;
3286 result->auth_level = DCERPC_AUTH_LEVEL_NONE;
3288 result->user_name = talloc_strdup(result, "");
3289 result->domain = talloc_strdup(result, "");
3290 if ((result->user_name == NULL) || (result->domain == NULL)) {
3291 TALLOC_FREE(result);
3292 return NT_STATUS_NO_MEMORY;
3296 return NT_STATUS_OK;
3299 static int cli_auth_ntlmssp_data_destructor(struct cli_pipe_auth_data *auth)
3301 ntlmssp_end(&auth->a_u.ntlmssp_state);
3305 static NTSTATUS rpccli_ntlmssp_bind_data(TALLOC_CTX *mem_ctx,
3306 enum pipe_auth_type auth_type,
3307 enum dcerpc_AuthLevel auth_level,
3309 const char *username,
3310 const char *password,
3311 struct cli_pipe_auth_data **presult)
3313 struct cli_pipe_auth_data *result;
3316 result = talloc(mem_ctx, struct cli_pipe_auth_data);
3317 if (result == NULL) {
3318 return NT_STATUS_NO_MEMORY;
3321 result->auth_type = auth_type;
3322 result->auth_level = auth_level;
3324 result->user_name = talloc_strdup(result, username);
3325 result->domain = talloc_strdup(result, domain);
3326 if ((result->user_name == NULL) || (result->domain == NULL)) {
3327 status = NT_STATUS_NO_MEMORY;
3331 status = ntlmssp_client_start(NULL,
3334 lp_client_ntlmv2_auth(),
3335 &result->a_u.ntlmssp_state);
3336 if (!NT_STATUS_IS_OK(status)) {
3340 talloc_set_destructor(result, cli_auth_ntlmssp_data_destructor);
3342 status = ntlmssp_set_username(result->a_u.ntlmssp_state, username);
3343 if (!NT_STATUS_IS_OK(status)) {
3347 status = ntlmssp_set_domain(result->a_u.ntlmssp_state, domain);
3348 if (!NT_STATUS_IS_OK(status)) {
3352 status = ntlmssp_set_password(result->a_u.ntlmssp_state, password);
3353 if (!NT_STATUS_IS_OK(status)) {
3358 * Turn off sign+seal to allow selected auth level to turn it back on.
3360 result->a_u.ntlmssp_state->neg_flags &=
3361 ~(NTLMSSP_NEGOTIATE_SIGN | NTLMSSP_NEGOTIATE_SEAL);
3363 if (auth_level == DCERPC_AUTH_LEVEL_INTEGRITY) {
3364 result->a_u.ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
3365 } else if (auth_level == DCERPC_AUTH_LEVEL_PRIVACY) {
3366 result->a_u.ntlmssp_state->neg_flags
3367 |= NTLMSSP_NEGOTIATE_SEAL | NTLMSSP_NEGOTIATE_SIGN;
3371 return NT_STATUS_OK;
3374 TALLOC_FREE(result);
3378 NTSTATUS rpccli_schannel_bind_data(TALLOC_CTX *mem_ctx, const char *domain,
3379 enum dcerpc_AuthLevel auth_level,
3380 struct netlogon_creds_CredentialState *creds,
3381 struct cli_pipe_auth_data **presult)
3383 struct cli_pipe_auth_data *result;
3385 result = talloc(mem_ctx, struct cli_pipe_auth_data);
3386 if (result == NULL) {
3387 return NT_STATUS_NO_MEMORY;
3390 result->auth_type = PIPE_AUTH_TYPE_SCHANNEL;
3391 result->auth_level = auth_level;
3393 result->user_name = talloc_strdup(result, "");
3394 result->domain = talloc_strdup(result, domain);
3395 if ((result->user_name == NULL) || (result->domain == NULL)) {
3399 result->a_u.schannel_auth = talloc(result, struct schannel_state);
3400 if (result->a_u.schannel_auth == NULL) {
3404 result->a_u.schannel_auth->state = SCHANNEL_STATE_START;
3405 result->a_u.schannel_auth->seq_num = 0;
3406 result->a_u.schannel_auth->initiator = true;
3407 result->a_u.schannel_auth->creds = creds;
3410 return NT_STATUS_OK;
3413 TALLOC_FREE(result);
3414 return NT_STATUS_NO_MEMORY;
3418 static int cli_auth_kerberos_data_destructor(struct kerberos_auth_struct *auth)
3420 data_blob_free(&auth->session_key);
3425 static NTSTATUS rpccli_kerberos_bind_data(TALLOC_CTX *mem_ctx,
3426 enum dcerpc_AuthLevel auth_level,
3427 const char *service_princ,
3428 const char *username,
3429 const char *password,
3430 struct cli_pipe_auth_data **presult)
3433 struct cli_pipe_auth_data *result;
3435 if ((username != NULL) && (password != NULL)) {
3436 int ret = kerberos_kinit_password(username, password, 0, NULL);
3438 return NT_STATUS_ACCESS_DENIED;
3442 result = talloc(mem_ctx, struct cli_pipe_auth_data);
3443 if (result == NULL) {
3444 return NT_STATUS_NO_MEMORY;
3447 result->auth_type = PIPE_AUTH_TYPE_KRB5;
3448 result->auth_level = auth_level;
3451 * Username / domain need fixing!
3453 result->user_name = talloc_strdup(result, "");
3454 result->domain = talloc_strdup(result, "");
3455 if ((result->user_name == NULL) || (result->domain == NULL)) {
3459 result->a_u.kerberos_auth = TALLOC_ZERO_P(
3460 result, struct kerberos_auth_struct);
3461 if (result->a_u.kerberos_auth == NULL) {
3464 talloc_set_destructor(result->a_u.kerberos_auth,
3465 cli_auth_kerberos_data_destructor);
3467 result->a_u.kerberos_auth->service_principal = talloc_strdup(
3468 result, service_princ);
3469 if (result->a_u.kerberos_auth->service_principal == NULL) {
3474 return NT_STATUS_OK;
3477 TALLOC_FREE(result);
3478 return NT_STATUS_NO_MEMORY;
3480 return NT_STATUS_NOT_SUPPORTED;
3485 * Create an rpc pipe client struct, connecting to a tcp port.
3487 static NTSTATUS rpc_pipe_open_tcp_port(TALLOC_CTX *mem_ctx, const char *host,
3489 const struct ndr_syntax_id *abstract_syntax,
3490 struct rpc_pipe_client **presult)
3492 struct rpc_pipe_client *result;
3493 struct sockaddr_storage addr;
3497 result = TALLOC_ZERO_P(mem_ctx, struct rpc_pipe_client);
3498 if (result == NULL) {
3499 return NT_STATUS_NO_MEMORY;
3502 result->abstract_syntax = *abstract_syntax;
3503 result->transfer_syntax = ndr_transfer_syntax;
3504 result->dispatch = cli_do_rpc_ndr;
3505 result->dispatch_send = cli_do_rpc_ndr_send;
3506 result->dispatch_recv = cli_do_rpc_ndr_recv;
3508 result->desthost = talloc_strdup(result, host);
3509 result->srv_name_slash = talloc_asprintf_strupper_m(
3510 result, "\\\\%s", result->desthost);
3511 if ((result->desthost == NULL) || (result->srv_name_slash == NULL)) {
3512 status = NT_STATUS_NO_MEMORY;
3516 result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
3517 result->max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
3519 if (!resolve_name(host, &addr, 0, false)) {
3520 status = NT_STATUS_NOT_FOUND;
3524 status = open_socket_out(&addr, port, 60, &fd);
3525 if (!NT_STATUS_IS_OK(status)) {
3528 set_socket_options(fd, lp_socket_options());
3530 status = rpc_transport_sock_init(result, fd, &result->transport);
3531 if (!NT_STATUS_IS_OK(status)) {
3536 result->transport->transport = NCACN_IP_TCP;
3539 return NT_STATUS_OK;
3542 TALLOC_FREE(result);
3547 * Determine the tcp port on which a dcerpc interface is listening
3548 * for the ncacn_ip_tcp transport via the endpoint mapper of the
3551 static NTSTATUS rpc_pipe_get_tcp_port(const char *host,
3552 const struct ndr_syntax_id *abstract_syntax,
3556 struct rpc_pipe_client *epm_pipe = NULL;
3557 struct cli_pipe_auth_data *auth = NULL;
3558 struct dcerpc_binding *map_binding = NULL;
3559 struct dcerpc_binding *res_binding = NULL;
3560 struct epm_twr_t *map_tower = NULL;
3561 struct epm_twr_t *res_towers = NULL;
3562 struct policy_handle *entry_handle = NULL;
3563 uint32_t num_towers = 0;
3564 uint32_t max_towers = 1;
3565 struct epm_twr_p_t towers;
3566 TALLOC_CTX *tmp_ctx = talloc_stackframe();
3568 if (pport == NULL) {
3569 status = NT_STATUS_INVALID_PARAMETER;
3573 /* open the connection to the endpoint mapper */
3574 status = rpc_pipe_open_tcp_port(tmp_ctx, host, 135,
3575 &ndr_table_epmapper.syntax_id,
3578 if (!NT_STATUS_IS_OK(status)) {
3582 status = rpccli_anon_bind_data(tmp_ctx, &auth);
3583 if (!NT_STATUS_IS_OK(status)) {
3587 status = rpc_pipe_bind(epm_pipe, auth);
3588 if (!NT_STATUS_IS_OK(status)) {
3592 /* create tower for asking the epmapper */
3594 map_binding = TALLOC_ZERO_P(tmp_ctx, struct dcerpc_binding);
3595 if (map_binding == NULL) {
3596 status = NT_STATUS_NO_MEMORY;
3600 map_binding->transport = NCACN_IP_TCP;
3601 map_binding->object = *abstract_syntax;
3602 map_binding->host = host; /* needed? */
3603 map_binding->endpoint = "0"; /* correct? needed? */
3605 map_tower = TALLOC_ZERO_P(tmp_ctx, struct epm_twr_t);
3606 if (map_tower == NULL) {
3607 status = NT_STATUS_NO_MEMORY;
3611 status = dcerpc_binding_build_tower(tmp_ctx, map_binding,
3612 &(map_tower->tower));
3613 if (!NT_STATUS_IS_OK(status)) {
3617 /* allocate further parameters for the epm_Map call */
3619 res_towers = TALLOC_ARRAY(tmp_ctx, struct epm_twr_t, max_towers);
3620 if (res_towers == NULL) {
3621 status = NT_STATUS_NO_MEMORY;
3624 towers.twr = res_towers;
3626 entry_handle = TALLOC_ZERO_P(tmp_ctx, struct policy_handle);
3627 if (entry_handle == NULL) {
3628 status = NT_STATUS_NO_MEMORY;
3632 /* ask the endpoint mapper for the port */
3634 status = rpccli_epm_Map(epm_pipe,
3636 CONST_DISCARD(struct GUID *,
3637 &(abstract_syntax->uuid)),
3644 if (!NT_STATUS_IS_OK(status)) {
3648 if (num_towers != 1) {
3649 status = NT_STATUS_UNSUCCESSFUL;
3653 /* extract the port from the answer */
3655 status = dcerpc_binding_from_tower(tmp_ctx,
3656 &(towers.twr->tower),
3658 if (!NT_STATUS_IS_OK(status)) {
3662 /* are further checks here necessary? */
3663 if (res_binding->transport != NCACN_IP_TCP) {
3664 status = NT_STATUS_UNSUCCESSFUL;
3668 *pport = (uint16_t)atoi(res_binding->endpoint);
3671 TALLOC_FREE(tmp_ctx);
3676 * Create a rpc pipe client struct, connecting to a host via tcp.
3677 * The port is determined by asking the endpoint mapper on the given
3680 NTSTATUS rpc_pipe_open_tcp(TALLOC_CTX *mem_ctx, const char *host,
3681 const struct ndr_syntax_id *abstract_syntax,
3682 struct rpc_pipe_client **presult)
3687 status = rpc_pipe_get_tcp_port(host, abstract_syntax, &port);
3688 if (!NT_STATUS_IS_OK(status)) {
3692 return rpc_pipe_open_tcp_port(mem_ctx, host, port,
3693 abstract_syntax, presult);
3696 /********************************************************************
3697 Create a rpc pipe client struct, connecting to a unix domain socket
3698 ********************************************************************/
3699 NTSTATUS rpc_pipe_open_ncalrpc(TALLOC_CTX *mem_ctx, const char *socket_path,
3700 const struct ndr_syntax_id *abstract_syntax,
3701 struct rpc_pipe_client **presult)
3703 struct rpc_pipe_client *result;
3704 struct sockaddr_un addr;
3708 result = talloc_zero(mem_ctx, struct rpc_pipe_client);
3709 if (result == NULL) {
3710 return NT_STATUS_NO_MEMORY;
3713 result->abstract_syntax = *abstract_syntax;
3714 result->transfer_syntax = ndr_transfer_syntax;
3715 result->dispatch = cli_do_rpc_ndr;
3716 result->dispatch_send = cli_do_rpc_ndr_send;
3717 result->dispatch_recv = cli_do_rpc_ndr_recv;
3719 result->desthost = get_myname(result);
3720 result->srv_name_slash = talloc_asprintf_strupper_m(
3721 result, "\\\\%s", result->desthost);
3722 if ((result->desthost == NULL) || (result->srv_name_slash == NULL)) {
3723 status = NT_STATUS_NO_MEMORY;
3727 result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
3728 result->max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
3730 fd = socket(AF_UNIX, SOCK_STREAM, 0);
3732 status = map_nt_error_from_unix(errno);
3737 addr.sun_family = AF_UNIX;
3738 strncpy(addr.sun_path, socket_path, sizeof(addr.sun_path));
3740 if (sys_connect(fd, (struct sockaddr *)(void *)&addr) == -1) {
3741 DEBUG(0, ("connect(%s) failed: %s\n", socket_path,
3744 return map_nt_error_from_unix(errno);
3747 status = rpc_transport_sock_init(result, fd, &result->transport);
3748 if (!NT_STATUS_IS_OK(status)) {
3753 result->transport->transport = NCALRPC;
3756 return NT_STATUS_OK;
3759 TALLOC_FREE(result);
3763 struct rpc_pipe_client_np_ref {
3764 struct cli_state *cli;
3765 struct rpc_pipe_client *pipe;
3768 static int rpc_pipe_client_np_ref_destructor(struct rpc_pipe_client_np_ref *np_ref)
3770 DLIST_REMOVE(np_ref->cli->pipe_list, np_ref->pipe);
3774 /****************************************************************************
3775 Open a named pipe over SMB to a remote server.
3777 * CAVEAT CALLER OF THIS FUNCTION:
3778 * The returned rpc_pipe_client saves a copy of the cli_state cli pointer,
3779 * so be sure that this function is called AFTER any structure (vs pointer)
3780 * assignment of the cli. In particular, libsmbclient does structure
3781 * assignments of cli, which invalidates the data in the returned
3782 * rpc_pipe_client if this function is called before the structure assignment
3785 ****************************************************************************/
3787 static NTSTATUS rpc_pipe_open_np(struct cli_state *cli,
3788 const struct ndr_syntax_id *abstract_syntax,
3789 struct rpc_pipe_client **presult)
3791 struct rpc_pipe_client *result;
3793 struct rpc_pipe_client_np_ref *np_ref;
3795 /* sanity check to protect against crashes */
3798 return NT_STATUS_INVALID_HANDLE;
3801 result = TALLOC_ZERO_P(NULL, struct rpc_pipe_client);
3802 if (result == NULL) {
3803 return NT_STATUS_NO_MEMORY;
3806 result->abstract_syntax = *abstract_syntax;
3807 result->transfer_syntax = ndr_transfer_syntax;
3808 result->dispatch = cli_do_rpc_ndr;
3809 result->dispatch_send = cli_do_rpc_ndr_send;
3810 result->dispatch_recv = cli_do_rpc_ndr_recv;
3811 result->desthost = talloc_strdup(result, cli->desthost);
3812 result->srv_name_slash = talloc_asprintf_strupper_m(
3813 result, "\\\\%s", result->desthost);
3815 result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
3816 result->max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
3818 if ((result->desthost == NULL) || (result->srv_name_slash == NULL)) {
3819 TALLOC_FREE(result);
3820 return NT_STATUS_NO_MEMORY;
3823 status = rpc_transport_np_init(result, cli, abstract_syntax,
3824 &result->transport);
3825 if (!NT_STATUS_IS_OK(status)) {
3826 TALLOC_FREE(result);
3830 result->transport->transport = NCACN_NP;
3832 np_ref = talloc(result->transport, struct rpc_pipe_client_np_ref);
3833 if (np_ref == NULL) {
3834 TALLOC_FREE(result);
3835 return NT_STATUS_NO_MEMORY;
3838 np_ref->pipe = result;
3840 DLIST_ADD(np_ref->cli->pipe_list, np_ref->pipe);
3841 talloc_set_destructor(np_ref, rpc_pipe_client_np_ref_destructor);
3844 return NT_STATUS_OK;
3847 NTSTATUS rpc_pipe_open_local(TALLOC_CTX *mem_ctx,
3848 struct rpc_cli_smbd_conn *conn,
3849 const struct ndr_syntax_id *syntax,
3850 struct rpc_pipe_client **presult)
3852 struct rpc_pipe_client *result;
3853 struct cli_pipe_auth_data *auth;
3856 result = talloc(mem_ctx, struct rpc_pipe_client);
3857 if (result == NULL) {
3858 return NT_STATUS_NO_MEMORY;
3860 result->abstract_syntax = *syntax;
3861 result->transfer_syntax = ndr_transfer_syntax;
3862 result->dispatch = cli_do_rpc_ndr;
3863 result->dispatch_send = cli_do_rpc_ndr_send;
3864 result->dispatch_recv = cli_do_rpc_ndr_recv;
3865 result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
3866 result->max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
3868 result->desthost = talloc_strdup(result, global_myname());
3869 result->srv_name_slash = talloc_asprintf_strupper_m(
3870 result, "\\\\%s", global_myname());
3871 if ((result->desthost == NULL) || (result->srv_name_slash == NULL)) {
3872 TALLOC_FREE(result);
3873 return NT_STATUS_NO_MEMORY;
3876 status = rpc_transport_smbd_init(result, conn, syntax,
3877 &result->transport);
3878 if (!NT_STATUS_IS_OK(status)) {
3879 DEBUG(1, ("rpc_transport_smbd_init failed: %s\n",
3880 nt_errstr(status)));
3881 TALLOC_FREE(result);
3885 status = rpccli_anon_bind_data(result, &auth);
3886 if (!NT_STATUS_IS_OK(status)) {
3887 DEBUG(1, ("rpccli_anon_bind_data failed: %s\n",
3888 nt_errstr(status)));
3889 TALLOC_FREE(result);
3893 status = rpc_pipe_bind(result, auth);
3894 if (!NT_STATUS_IS_OK(status)) {
3895 DEBUG(1, ("rpc_pipe_bind failed: %s\n", nt_errstr(status)));
3896 TALLOC_FREE(result);
3900 result->transport->transport = NCACN_INTERNAL;
3903 return NT_STATUS_OK;
3906 /****************************************************************************
3907 Open a pipe to a remote server.
3908 ****************************************************************************/
3910 static NTSTATUS cli_rpc_pipe_open(struct cli_state *cli,
3911 enum dcerpc_transport_t transport,
3912 const struct ndr_syntax_id *interface,
3913 struct rpc_pipe_client **presult)
3915 switch (transport) {
3917 return rpc_pipe_open_tcp(NULL, cli->desthost, interface,
3920 return rpc_pipe_open_np(cli, interface, presult);
3922 return NT_STATUS_NOT_IMPLEMENTED;
3926 /****************************************************************************
3927 Open a named pipe to an SMB server and bind anonymously.
3928 ****************************************************************************/
3930 NTSTATUS cli_rpc_pipe_open_noauth_transport(struct cli_state *cli,
3931 enum dcerpc_transport_t transport,
3932 const struct ndr_syntax_id *interface,
3933 struct rpc_pipe_client **presult)
3935 struct rpc_pipe_client *result;
3936 struct cli_pipe_auth_data *auth;
3939 status = cli_rpc_pipe_open(cli, transport, interface, &result);
3940 if (!NT_STATUS_IS_OK(status)) {
3944 status = rpccli_anon_bind_data(result, &auth);
3945 if (!NT_STATUS_IS_OK(status)) {
3946 DEBUG(0, ("rpccli_anon_bind_data returned %s\n",
3947 nt_errstr(status)));
3948 TALLOC_FREE(result);
3953 * This is a bit of an abstraction violation due to the fact that an
3954 * anonymous bind on an authenticated SMB inherits the user/domain
3955 * from the enclosing SMB creds
3958 TALLOC_FREE(auth->user_name);
3959 TALLOC_FREE(auth->domain);
3961 auth->user_name = talloc_strdup(auth, cli->user_name);
3962 auth->domain = talloc_strdup(auth, cli->domain);
3963 auth->user_session_key = data_blob_talloc(auth,
3964 cli->user_session_key.data,
3965 cli->user_session_key.length);
3967 if ((auth->user_name == NULL) || (auth->domain == NULL)) {
3968 TALLOC_FREE(result);
3969 return NT_STATUS_NO_MEMORY;
3972 status = rpc_pipe_bind(result, auth);
3973 if (!NT_STATUS_IS_OK(status)) {
3975 if (ndr_syntax_id_equal(interface,
3976 &ndr_table_dssetup.syntax_id)) {
3977 /* non AD domains just don't have this pipe, avoid
3978 * level 0 statement in that case - gd */
3981 DEBUG(lvl, ("cli_rpc_pipe_open_noauth: rpc_pipe_bind for pipe "
3982 "%s failed with error %s\n",
3983 get_pipe_name_from_syntax(talloc_tos(), interface),
3984 nt_errstr(status) ));
3985 TALLOC_FREE(result);
3989 DEBUG(10,("cli_rpc_pipe_open_noauth: opened pipe %s to machine "
3990 "%s and bound anonymously.\n",
3991 get_pipe_name_from_syntax(talloc_tos(), interface),
3995 return NT_STATUS_OK;
3998 /****************************************************************************
3999 ****************************************************************************/
4001 NTSTATUS cli_rpc_pipe_open_noauth(struct cli_state *cli,
4002 const struct ndr_syntax_id *interface,
4003 struct rpc_pipe_client **presult)
4005 return cli_rpc_pipe_open_noauth_transport(cli, NCACN_NP,
4006 interface, presult);
4009 /****************************************************************************
4010 Open a named pipe to an SMB server and bind using NTLMSSP or SPNEGO NTLMSSP
4011 ****************************************************************************/
4013 static NTSTATUS cli_rpc_pipe_open_ntlmssp_internal(struct cli_state *cli,
4014 const struct ndr_syntax_id *interface,
4015 enum dcerpc_transport_t transport,
4016 enum pipe_auth_type auth_type,
4017 enum dcerpc_AuthLevel auth_level,
4019 const char *username,
4020 const char *password,
4021 struct rpc_pipe_client **presult)
4023 struct rpc_pipe_client *result;
4024 struct cli_pipe_auth_data *auth;
4027 status = cli_rpc_pipe_open(cli, transport, interface, &result);
4028 if (!NT_STATUS_IS_OK(status)) {
4032 status = rpccli_ntlmssp_bind_data(
4033 result, auth_type, auth_level, domain, username,
4035 if (!NT_STATUS_IS_OK(status)) {
4036 DEBUG(0, ("rpccli_ntlmssp_bind_data returned %s\n",
4037 nt_errstr(status)));
4041 status = rpc_pipe_bind(result, auth);
4042 if (!NT_STATUS_IS_OK(status)) {
4043 DEBUG(0, ("cli_rpc_pipe_open_ntlmssp_internal: cli_rpc_pipe_bind failed with error %s\n",
4044 nt_errstr(status) ));
4048 DEBUG(10,("cli_rpc_pipe_open_ntlmssp_internal: opened pipe %s to "
4049 "machine %s and bound NTLMSSP as user %s\\%s.\n",
4050 get_pipe_name_from_syntax(talloc_tos(), interface),
4051 cli->desthost, domain, username ));
4054 return NT_STATUS_OK;
4058 TALLOC_FREE(result);
4062 /****************************************************************************
4064 Open a named pipe to an SMB server and bind using NTLMSSP (bind type 10)
4065 ****************************************************************************/
4067 NTSTATUS cli_rpc_pipe_open_ntlmssp(struct cli_state *cli,
4068 const struct ndr_syntax_id *interface,
4069 enum dcerpc_transport_t transport,
4070 enum dcerpc_AuthLevel auth_level,
4072 const char *username,
4073 const char *password,
4074 struct rpc_pipe_client **presult)
4076 return cli_rpc_pipe_open_ntlmssp_internal(cli,
4079 PIPE_AUTH_TYPE_NTLMSSP,
4087 /****************************************************************************
4089 Open a named pipe to an SMB server and bind using spnego NTLMSSP (bind type 9)
4090 ****************************************************************************/
4092 NTSTATUS cli_rpc_pipe_open_spnego_ntlmssp(struct cli_state *cli,
4093 const struct ndr_syntax_id *interface,
4094 enum dcerpc_transport_t transport,
4095 enum dcerpc_AuthLevel auth_level,
4097 const char *username,
4098 const char *password,
4099 struct rpc_pipe_client **presult)
4101 return cli_rpc_pipe_open_ntlmssp_internal(cli,
4104 PIPE_AUTH_TYPE_SPNEGO_NTLMSSP,
4112 /****************************************************************************
4113 Get a the schannel session key out of an already opened netlogon pipe.
4114 ****************************************************************************/
4115 static NTSTATUS get_schannel_session_key_common(struct rpc_pipe_client *netlogon_pipe,
4116 struct cli_state *cli,
4120 enum netr_SchannelType sec_chan_type = 0;
4121 unsigned char machine_pwd[16];
4122 const char *machine_account;
4125 /* Get the machine account credentials from secrets.tdb. */
4126 if (!get_trust_pw_hash(domain, machine_pwd, &machine_account,
4129 DEBUG(0, ("get_schannel_session_key: could not fetch "
4130 "trust account password for domain '%s'\n",
4132 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
4135 status = rpccli_netlogon_setup_creds(netlogon_pipe,
4136 cli->desthost, /* server name */
4137 domain, /* domain */
4138 global_myname(), /* client name */
4139 machine_account, /* machine account name */
4144 if (!NT_STATUS_IS_OK(status)) {
4145 DEBUG(3, ("get_schannel_session_key_common: "
4146 "rpccli_netlogon_setup_creds failed with result %s "
4147 "to server %s, domain %s, machine account %s.\n",
4148 nt_errstr(status), cli->desthost, domain,
4153 if (((*pneg_flags) & NETLOGON_NEG_SCHANNEL) == 0) {
4154 DEBUG(3, ("get_schannel_session_key: Server %s did not offer schannel\n",
4156 return NT_STATUS_INVALID_NETWORK_RESPONSE;
4159 return NT_STATUS_OK;;
4162 /****************************************************************************
4163 Open a netlogon pipe and get the schannel session key.
4164 Now exposed to external callers.
4165 ****************************************************************************/
4168 NTSTATUS get_schannel_session_key(struct cli_state *cli,
4171 struct rpc_pipe_client **presult)
4173 struct rpc_pipe_client *netlogon_pipe = NULL;
4176 status = cli_rpc_pipe_open_noauth(cli, &ndr_table_netlogon.syntax_id,
4178 if (!NT_STATUS_IS_OK(status)) {
4182 status = get_schannel_session_key_common(netlogon_pipe, cli, domain,
4184 if (!NT_STATUS_IS_OK(status)) {
4185 TALLOC_FREE(netlogon_pipe);
4189 *presult = netlogon_pipe;
4190 return NT_STATUS_OK;
4193 /****************************************************************************
4195 Open a named pipe to an SMB server and bind using schannel (bind type 68)
4196 using session_key. sign and seal.
4198 The *pdc will be stolen onto this new pipe
4199 ****************************************************************************/
4201 NTSTATUS cli_rpc_pipe_open_schannel_with_key(struct cli_state *cli,
4202 const struct ndr_syntax_id *interface,
4203 enum dcerpc_transport_t transport,
4204 enum dcerpc_AuthLevel auth_level,
4206 struct netlogon_creds_CredentialState **pdc,
4207 struct rpc_pipe_client **presult)
4209 struct rpc_pipe_client *result;
4210 struct cli_pipe_auth_data *auth;
4213 status = cli_rpc_pipe_open(cli, transport, interface, &result);
4214 if (!NT_STATUS_IS_OK(status)) {
4218 status = rpccli_schannel_bind_data(result, domain, auth_level,
4220 if (!NT_STATUS_IS_OK(status)) {
4221 DEBUG(0, ("rpccli_schannel_bind_data returned %s\n",
4222 nt_errstr(status)));
4223 TALLOC_FREE(result);
4227 status = rpc_pipe_bind(result, auth);
4228 if (!NT_STATUS_IS_OK(status)) {
4229 DEBUG(0, ("cli_rpc_pipe_open_schannel_with_key: "
4230 "cli_rpc_pipe_bind failed with error %s\n",
4231 nt_errstr(status) ));
4232 TALLOC_FREE(result);
4237 * The credentials on a new netlogon pipe are the ones we are passed
4238 * in - reference them in
4240 result->dc = talloc_move(result, pdc);
4242 DEBUG(10,("cli_rpc_pipe_open_schannel_with_key: opened pipe %s to machine %s "
4243 "for domain %s and bound using schannel.\n",
4244 get_pipe_name_from_syntax(talloc_tos(), interface),
4245 cli->desthost, domain ));
4248 return NT_STATUS_OK;
4251 /****************************************************************************
4252 Open a named pipe to an SMB server and bind using schannel (bind type 68).
4253 Fetch the session key ourselves using a temporary netlogon pipe. This
4254 version uses an ntlmssp auth bound netlogon pipe to get the key.
4255 ****************************************************************************/
4257 static NTSTATUS get_schannel_session_key_auth_ntlmssp(struct cli_state *cli,
4259 const char *username,
4260 const char *password,
4262 struct rpc_pipe_client **presult)
4264 struct rpc_pipe_client *netlogon_pipe = NULL;
4267 status = cli_rpc_pipe_open_spnego_ntlmssp(
4268 cli, &ndr_table_netlogon.syntax_id, NCACN_NP,
4269 DCERPC_AUTH_LEVEL_PRIVACY,
4270 domain, username, password, &netlogon_pipe);
4271 if (!NT_STATUS_IS_OK(status)) {
4275 status = get_schannel_session_key_common(netlogon_pipe, cli, domain,
4277 if (!NT_STATUS_IS_OK(status)) {
4278 TALLOC_FREE(netlogon_pipe);
4282 *presult = netlogon_pipe;
4283 return NT_STATUS_OK;
4286 /****************************************************************************
4287 Open a named pipe to an SMB server and bind using schannel (bind type 68).
4288 Fetch the session key ourselves using a temporary netlogon pipe. This version
4289 uses an ntlmssp bind to get the session key.
4290 ****************************************************************************/
4292 NTSTATUS cli_rpc_pipe_open_ntlmssp_auth_schannel(struct cli_state *cli,
4293 const struct ndr_syntax_id *interface,
4294 enum dcerpc_transport_t transport,
4295 enum dcerpc_AuthLevel auth_level,
4297 const char *username,
4298 const char *password,
4299 struct rpc_pipe_client **presult)
4301 uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
4302 struct rpc_pipe_client *netlogon_pipe = NULL;
4303 struct rpc_pipe_client *result = NULL;
4306 status = get_schannel_session_key_auth_ntlmssp(
4307 cli, domain, username, password, &neg_flags, &netlogon_pipe);
4308 if (!NT_STATUS_IS_OK(status)) {
4309 DEBUG(0,("cli_rpc_pipe_open_ntlmssp_auth_schannel: failed to get schannel session "
4310 "key from server %s for domain %s.\n",
4311 cli->desthost, domain ));
4315 status = cli_rpc_pipe_open_schannel_with_key(
4316 cli, interface, transport, auth_level, domain, &netlogon_pipe->dc,
4319 /* Now we've bound using the session key we can close the netlog pipe. */
4320 TALLOC_FREE(netlogon_pipe);
4322 if (NT_STATUS_IS_OK(status)) {
4328 /****************************************************************************
4329 Open a named pipe to an SMB server and bind using schannel (bind type 68).
4330 Fetch the session key ourselves using a temporary netlogon pipe.
4331 ****************************************************************************/
4333 NTSTATUS cli_rpc_pipe_open_schannel(struct cli_state *cli,
4334 const struct ndr_syntax_id *interface,
4335 enum dcerpc_transport_t transport,
4336 enum dcerpc_AuthLevel auth_level,
4338 struct rpc_pipe_client **presult)
4340 uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
4341 struct rpc_pipe_client *netlogon_pipe = NULL;
4342 struct rpc_pipe_client *result = NULL;
4345 status = get_schannel_session_key(cli, domain, &neg_flags,
4347 if (!NT_STATUS_IS_OK(status)) {
4348 DEBUG(0,("cli_rpc_pipe_open_schannel: failed to get schannel session "
4349 "key from server %s for domain %s.\n",
4350 cli->desthost, domain ));
4354 status = cli_rpc_pipe_open_schannel_with_key(
4355 cli, interface, transport, auth_level, domain, &netlogon_pipe->dc,
4358 /* Now we've bound using the session key we can close the netlog pipe. */
4359 TALLOC_FREE(netlogon_pipe);
4361 if (NT_STATUS_IS_OK(status)) {
4368 /****************************************************************************
4369 Open a named pipe to an SMB server and bind using krb5 (bind type 16).
4370 The idea is this can be called with service_princ, username and password all
4371 NULL so long as the caller has a TGT.
4372 ****************************************************************************/
4374 NTSTATUS cli_rpc_pipe_open_krb5(struct cli_state *cli,
4375 const struct ndr_syntax_id *interface,
4376 enum dcerpc_AuthLevel auth_level,
4377 const char *service_princ,
4378 const char *username,
4379 const char *password,
4380 struct rpc_pipe_client **presult)
4383 struct rpc_pipe_client *result;
4384 struct cli_pipe_auth_data *auth;
4387 status = cli_rpc_pipe_open(cli, NCACN_NP, interface, &result);
4388 if (!NT_STATUS_IS_OK(status)) {
4392 status = rpccli_kerberos_bind_data(result, auth_level, service_princ,
4393 username, password, &auth);
4394 if (!NT_STATUS_IS_OK(status)) {
4395 DEBUG(0, ("rpccli_kerberos_bind_data returned %s\n",
4396 nt_errstr(status)));
4397 TALLOC_FREE(result);
4401 status = rpc_pipe_bind(result, auth);
4402 if (!NT_STATUS_IS_OK(status)) {
4403 DEBUG(0, ("cli_rpc_pipe_open_krb5: cli_rpc_pipe_bind failed "
4404 "with error %s\n", nt_errstr(status)));
4405 TALLOC_FREE(result);
4410 return NT_STATUS_OK;
4412 DEBUG(0,("cli_rpc_pipe_open_krb5: kerberos not found at compile time.\n"));
4413 return NT_STATUS_NOT_IMPLEMENTED;
4417 NTSTATUS cli_get_session_key(TALLOC_CTX *mem_ctx,
4418 struct rpc_pipe_client *cli,
4419 DATA_BLOB *session_key)
4421 if (!session_key || !cli) {
4422 return NT_STATUS_INVALID_PARAMETER;
4426 return NT_STATUS_INVALID_PARAMETER;
4429 switch (cli->auth->auth_type) {
4430 case PIPE_AUTH_TYPE_SCHANNEL:
4431 *session_key = data_blob_talloc(mem_ctx,
4432 cli->auth->a_u.schannel_auth->creds->session_key, 16);
4434 case PIPE_AUTH_TYPE_NTLMSSP:
4435 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
4436 *session_key = data_blob_talloc(mem_ctx,
4437 cli->auth->a_u.ntlmssp_state->session_key.data,
4438 cli->auth->a_u.ntlmssp_state->session_key.length);
4440 case PIPE_AUTH_TYPE_KRB5:
4441 case PIPE_AUTH_TYPE_SPNEGO_KRB5:
4442 *session_key = data_blob_talloc(mem_ctx,
4443 cli->auth->a_u.kerberos_auth->session_key.data,
4444 cli->auth->a_u.kerberos_auth->session_key.length);
4446 case PIPE_AUTH_TYPE_NONE:
4447 *session_key = data_blob_talloc(mem_ctx,
4448 cli->auth->user_session_key.data,
4449 cli->auth->user_session_key.length);
4452 return NT_STATUS_NO_USER_SESSION_KEY;
4455 return NT_STATUS_OK;