2 * Unix SMB/CIFS implementation.
3 * RPC Pipe client / server routines
4 * Almost completely rewritten by (C) 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/>.
20 /* this module apparently provides an implementation of DCE/RPC over a
21 * named pipe (IPC$ connection using SMBtrans). details of DCE/RPC
22 * documentation are available (in on-line form) from the X-Open group.
24 * this module should provide a level of abstraction between SMB
25 * and DCE/RPC, while minimising the amount of mallocs, unnecessary
26 * data copies, and network traffic.
31 #include "../librpc/gen_ndr/ndr_schannel.h"
32 #include "../libcli/auth/schannel.h"
33 #include "../libcli/auth/spnego.h"
35 extern struct current_user current_user
;
38 #define DBGC_CLASS DBGC_RPC_SRV
40 static void free_pipe_ntlmssp_auth_data(struct pipe_auth_data
*auth
)
42 AUTH_NTLMSSP_STATE
*a
= auth
->a_u
.auth_ntlmssp_state
;
47 auth
->a_u
.auth_ntlmssp_state
= NULL
;
50 static DATA_BLOB
generic_session_key(void)
52 return data_blob("SystemLibraryDTC", 16);
55 /*******************************************************************
56 Generate the next PDU to be returned from the data in p->rdata.
58 ********************************************************************/
60 static bool create_next_pdu_ntlmssp(pipes_struct
*p
)
62 RPC_HDR_RESP hdr_resp
;
63 uint32 ss_padding_len
= 0;
64 uint32 data_space_available
;
69 RPC_HDR_AUTH auth_info
;
70 uint8 auth_type
, auth_level
;
71 AUTH_NTLMSSP_STATE
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
74 * If we're in the fault state, keep returning fault PDU's until
75 * the pipe gets closed. JRA.
79 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
83 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
85 /* Change the incoming request header to a response. */
86 p
->hdr
.pkt_type
= DCERPC_PKT_RESPONSE
;
88 /* Set up rpc header flags. */
89 if (p
->out_data
.data_sent_length
== 0) {
90 p
->hdr
.flags
= DCERPC_PFC_FLAG_FIRST
;
96 * Work out how much we can fit in a single PDU.
99 data_len_left
= prs_offset(&p
->out_data
.rdata
) - p
->out_data
.data_sent_length
;
102 * Ensure there really is data left to send.
106 DEBUG(0,("create_next_pdu_ntlmssp: no data left to send !\n"));
110 data_space_available
= RPC_MAX_PDU_FRAG_LEN
- RPC_HEADER_LEN
111 - RPC_HDR_RESP_LEN
- RPC_HDR_AUTH_LEN
- NTLMSSP_SIG_SIZE
;
114 * The amount we send is the minimum of the available
115 * space and the amount left to send.
118 data_len
= MIN(data_len_left
, data_space_available
);
121 * Set up the alloc hint. This should be the data left to
125 hdr_resp
.alloc_hint
= data_len_left
;
128 * Work out if this PDU will be the last.
131 if(p
->out_data
.data_sent_length
+ data_len
>= prs_offset(&p
->out_data
.rdata
)) {
132 p
->hdr
.flags
|= DCERPC_PFC_FLAG_LAST
;
133 if (data_len_left
% 8) {
134 ss_padding_len
= 8 - (data_len_left
% 8);
135 DEBUG(10,("create_next_pdu_ntlmssp: adding sign/seal padding of %u\n",
141 * Set up the header lengths.
144 p
->hdr
.frag_len
= RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+
145 data_len
+ ss_padding_len
+
146 RPC_HDR_AUTH_LEN
+ NTLMSSP_SIG_SIZE
;
147 p
->hdr
.auth_len
= NTLMSSP_SIG_SIZE
;
151 * Init the parse struct to point at the outgoing
155 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
157 /* Store the header in the data stream. */
158 if(!smb_io_rpc_hdr("hdr", &p
->hdr
, &p
->out_data
.frag
, 0)) {
159 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR.\n"));
160 prs_mem_free(&p
->out_data
.frag
);
164 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &p
->out_data
.frag
, 0)) {
165 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_RESP.\n"));
166 prs_mem_free(&p
->out_data
.frag
);
170 /* Copy the data into the PDU. */
172 if(!prs_append_some_prs_data(&p
->out_data
.frag
, &p
->out_data
.rdata
,
173 p
->out_data
.data_sent_length
, data_len
)) {
174 DEBUG(0,("create_next_pdu_ntlmssp: failed to copy %u bytes of data.\n", (unsigned int)data_len
));
175 prs_mem_free(&p
->out_data
.frag
);
179 /* Copy the sign/seal padding data. */
180 if (ss_padding_len
) {
183 memset(pad
, '\0', 8);
184 if (!prs_copy_data_in(&p
->out_data
.frag
, pad
,
186 DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes of pad data.\n",
187 (unsigned int)ss_padding_len
));
188 prs_mem_free(&p
->out_data
.frag
);
194 /* Now write out the auth header and null blob. */
195 if (p
->auth
.auth_type
== PIPE_AUTH_TYPE_NTLMSSP
) {
196 auth_type
= DCERPC_AUTH_TYPE_NTLMSSP
;
198 auth_type
= DCERPC_AUTH_TYPE_SPNEGO
;
200 if (p
->auth
.auth_level
== DCERPC_AUTH_LEVEL_PRIVACY
) {
201 auth_level
= DCERPC_AUTH_LEVEL_PRIVACY
;
203 auth_level
= DCERPC_AUTH_LEVEL_INTEGRITY
;
206 init_rpc_hdr_auth(&auth_info
, auth_type
, auth_level
, ss_padding_len
, 1 /* context id. */);
207 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
, &p
->out_data
.frag
,
209 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_AUTH.\n"));
210 prs_mem_free(&p
->out_data
.frag
);
214 /* Generate the sign blob. */
216 switch (p
->auth
.auth_level
) {
217 case DCERPC_AUTH_LEVEL_PRIVACY
:
218 /* Data portion is encrypted. */
219 status
= ntlmssp_seal_packet(
221 (uint8_t *)prs_data_p(&p
->out_data
.frag
)
222 + RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
,
223 data_len
+ ss_padding_len
,
224 (unsigned char *)prs_data_p(&p
->out_data
.frag
),
225 (size_t)prs_offset(&p
->out_data
.frag
),
227 if (!NT_STATUS_IS_OK(status
)) {
228 data_blob_free(&auth_blob
);
229 prs_mem_free(&p
->out_data
.frag
);
233 case DCERPC_AUTH_LEVEL_INTEGRITY
:
234 /* Data is signed. */
235 status
= ntlmssp_sign_packet(
237 (unsigned char *)prs_data_p(&p
->out_data
.frag
)
238 + RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
,
239 data_len
+ ss_padding_len
,
240 (unsigned char *)prs_data_p(&p
->out_data
.frag
),
241 (size_t)prs_offset(&p
->out_data
.frag
),
243 if (!NT_STATUS_IS_OK(status
)) {
244 data_blob_free(&auth_blob
);
245 prs_mem_free(&p
->out_data
.frag
);
250 prs_mem_free(&p
->out_data
.frag
);
254 /* Append the auth blob. */
255 if (!prs_copy_data_in(&p
->out_data
.frag
, (char *)auth_blob
.data
,
257 DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes auth blob.\n",
258 (unsigned int)NTLMSSP_SIG_SIZE
));
259 data_blob_free(&auth_blob
);
260 prs_mem_free(&p
->out_data
.frag
);
264 data_blob_free(&auth_blob
);
267 * Setup the counts for this PDU.
270 p
->out_data
.data_sent_length
+= data_len
;
271 p
->out_data
.current_pdu_sent
= 0;
276 /*******************************************************************
277 Generate the next PDU to be returned from the data in p->rdata.
278 Return an schannel authenticated fragment.
279 ********************************************************************/
281 static bool create_next_pdu_schannel(pipes_struct
*p
)
283 RPC_HDR_RESP hdr_resp
;
284 uint32 ss_padding_len
= 0;
286 uint32 data_space_available
;
287 uint32 data_len_left
;
292 * If we're in the fault state, keep returning fault PDU's until
293 * the pipe gets closed. JRA.
297 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
301 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
303 /* Change the incoming request header to a response. */
304 p
->hdr
.pkt_type
= DCERPC_PKT_RESPONSE
;
306 /* Set up rpc header flags. */
307 if (p
->out_data
.data_sent_length
== 0) {
308 p
->hdr
.flags
= DCERPC_PFC_FLAG_FIRST
;
314 * Work out how much we can fit in a single PDU.
317 data_len_left
= prs_offset(&p
->out_data
.rdata
) - p
->out_data
.data_sent_length
;
320 * Ensure there really is data left to send.
324 DEBUG(0,("create_next_pdu_schannel: no data left to send !\n"));
328 data_space_available
= RPC_MAX_PDU_FRAG_LEN
- RPC_HEADER_LEN
329 - RPC_HDR_RESP_LEN
- RPC_HDR_AUTH_LEN
330 - RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
;
333 * The amount we send is the minimum of the available
334 * space and the amount left to send.
337 data_len
= MIN(data_len_left
, data_space_available
);
340 * Set up the alloc hint. This should be the data left to
344 hdr_resp
.alloc_hint
= data_len_left
;
347 * Work out if this PDU will be the last.
350 if(p
->out_data
.data_sent_length
+ data_len
>= prs_offset(&p
->out_data
.rdata
)) {
351 p
->hdr
.flags
|= DCERPC_PFC_FLAG_LAST
;
352 if (data_len_left
% 8) {
353 ss_padding_len
= 8 - (data_len_left
% 8);
354 DEBUG(10,("create_next_pdu_schannel: adding sign/seal padding of %u\n",
359 p
->hdr
.frag_len
= RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+ data_len
+ ss_padding_len
+
360 RPC_HDR_AUTH_LEN
+ RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
;
361 p
->hdr
.auth_len
= RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
;
364 * Init the parse struct to point at the outgoing
368 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
370 /* Store the header in the data stream. */
371 if(!smb_io_rpc_hdr("hdr", &p
->hdr
, &p
->out_data
.frag
, 0)) {
372 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR.\n"));
373 prs_mem_free(&p
->out_data
.frag
);
377 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &p
->out_data
.frag
, 0)) {
378 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_RESP.\n"));
379 prs_mem_free(&p
->out_data
.frag
);
383 /* Store the current offset. */
384 data_pos
= prs_offset(&p
->out_data
.frag
);
386 /* Copy the data into the PDU. */
388 if(!prs_append_some_prs_data(&p
->out_data
.frag
, &p
->out_data
.rdata
,
389 p
->out_data
.data_sent_length
, data_len
)) {
390 DEBUG(0,("create_next_pdu_schannel: failed to copy %u bytes of data.\n", (unsigned int)data_len
));
391 prs_mem_free(&p
->out_data
.frag
);
395 /* Copy the sign/seal padding data. */
396 if (ss_padding_len
) {
398 memset(pad
, '\0', 8);
399 if (!prs_copy_data_in(&p
->out_data
.frag
, pad
,
401 DEBUG(0,("create_next_pdu_schannel: failed to add %u bytes of pad data.\n", (unsigned int)ss_padding_len
));
402 prs_mem_free(&p
->out_data
.frag
);
409 * Schannel processing.
411 RPC_HDR_AUTH auth_info
;
415 /* Check it's the type of reply we were expecting to decode */
417 init_rpc_hdr_auth(&auth_info
,
418 DCERPC_AUTH_TYPE_SCHANNEL
,
419 p
->auth
.auth_level
== DCERPC_AUTH_LEVEL_PRIVACY
?
420 DCERPC_AUTH_LEVEL_PRIVACY
: DCERPC_AUTH_LEVEL_INTEGRITY
,
423 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
,
424 &p
->out_data
.frag
, 0)) {
425 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_AUTH.\n"));
426 prs_mem_free(&p
->out_data
.frag
);
430 data
= (uint8_t *)prs_data_p(&p
->out_data
.frag
) + data_pos
;
432 switch (p
->auth
.auth_level
) {
433 case DCERPC_AUTH_LEVEL_PRIVACY
:
434 status
= netsec_outgoing_packet(p
->auth
.a_u
.schannel_auth
,
438 data_len
+ ss_padding_len
,
441 case DCERPC_AUTH_LEVEL_INTEGRITY
:
442 status
= netsec_outgoing_packet(p
->auth
.a_u
.schannel_auth
,
446 data_len
+ ss_padding_len
,
450 status
= NT_STATUS_INTERNAL_ERROR
;
454 if (!NT_STATUS_IS_OK(status
)) {
455 DEBUG(0,("create_next_pdu_schannel: failed to process packet: %s\n",
457 prs_mem_free(&p
->out_data
.frag
);
461 /* Finally marshall the blob. */
463 if (DEBUGLEVEL
>= 10) {
464 dump_NL_AUTH_SIGNATURE(talloc_tos(), &blob
);
467 if (!prs_copy_data_in(&p
->out_data
.frag
, (const char *)blob
.data
, blob
.length
)) {
468 prs_mem_free(&p
->out_data
.frag
);
474 * Setup the counts for this PDU.
477 p
->out_data
.data_sent_length
+= data_len
;
478 p
->out_data
.current_pdu_sent
= 0;
483 /*******************************************************************
484 Generate the next PDU to be returned from the data in p->rdata.
485 No authentication done.
486 ********************************************************************/
488 static bool create_next_pdu_noauth(pipes_struct
*p
)
490 RPC_HDR_RESP hdr_resp
;
492 uint32 data_space_available
;
493 uint32 data_len_left
;
496 * If we're in the fault state, keep returning fault PDU's until
497 * the pipe gets closed. JRA.
501 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
505 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
507 /* Change the incoming request header to a response. */
508 p
->hdr
.pkt_type
= DCERPC_PKT_RESPONSE
;
510 /* Set up rpc header flags. */
511 if (p
->out_data
.data_sent_length
== 0) {
512 p
->hdr
.flags
= DCERPC_PFC_FLAG_FIRST
;
518 * Work out how much we can fit in a single PDU.
521 data_len_left
= prs_offset(&p
->out_data
.rdata
) - p
->out_data
.data_sent_length
;
524 * Ensure there really is data left to send.
528 DEBUG(0,("create_next_pdu_noath: no data left to send !\n"));
532 data_space_available
= RPC_MAX_PDU_FRAG_LEN
- RPC_HEADER_LEN
536 * The amount we send is the minimum of the available
537 * space and the amount left to send.
540 data_len
= MIN(data_len_left
, data_space_available
);
543 * Set up the alloc hint. This should be the data left to
547 hdr_resp
.alloc_hint
= data_len_left
;
550 * Work out if this PDU will be the last.
553 if(p
->out_data
.data_sent_length
+ data_len
>= prs_offset(&p
->out_data
.rdata
)) {
554 p
->hdr
.flags
|= DCERPC_PFC_FLAG_LAST
;
558 * Set up the header lengths.
561 p
->hdr
.frag_len
= RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+ data_len
;
565 * Init the parse struct to point at the outgoing
569 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
571 /* Store the header in the data stream. */
572 if(!smb_io_rpc_hdr("hdr", &p
->hdr
, &p
->out_data
.frag
, 0)) {
573 DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR.\n"));
574 prs_mem_free(&p
->out_data
.frag
);
578 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &p
->out_data
.frag
, 0)) {
579 DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR_RESP.\n"));
580 prs_mem_free(&p
->out_data
.frag
);
584 /* Copy the data into the PDU. */
586 if(!prs_append_some_prs_data(&p
->out_data
.frag
, &p
->out_data
.rdata
,
587 p
->out_data
.data_sent_length
, data_len
)) {
588 DEBUG(0,("create_next_pdu_noauth: failed to copy %u bytes of data.\n", (unsigned int)data_len
));
589 prs_mem_free(&p
->out_data
.frag
);
594 * Setup the counts for this PDU.
597 p
->out_data
.data_sent_length
+= data_len
;
598 p
->out_data
.current_pdu_sent
= 0;
603 /*******************************************************************
604 Generate the next PDU to be returned from the data in p->rdata.
605 ********************************************************************/
607 bool create_next_pdu(pipes_struct
*p
)
609 switch(p
->auth
.auth_level
) {
610 case DCERPC_AUTH_LEVEL_NONE
:
611 case DCERPC_AUTH_LEVEL_CONNECT
:
612 /* This is incorrect for auth level connect. Fixme. JRA */
613 return create_next_pdu_noauth(p
);
616 switch(p
->auth
.auth_type
) {
617 case PIPE_AUTH_TYPE_NTLMSSP
:
618 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
:
619 return create_next_pdu_ntlmssp(p
);
620 case PIPE_AUTH_TYPE_SCHANNEL
:
621 return create_next_pdu_schannel(p
);
627 DEBUG(0,("create_next_pdu: invalid internal auth level %u / type %u",
628 (unsigned int)p
->auth
.auth_level
,
629 (unsigned int)p
->auth
.auth_type
));
633 /*******************************************************************
634 Process an NTLMSSP authentication response.
635 If this function succeeds, the user has been authenticated
636 and their domain, name and calling workstation stored in
638 *******************************************************************/
640 static bool pipe_ntlmssp_verify_final(pipes_struct
*p
, DATA_BLOB
*p_resp_blob
)
642 DATA_BLOB session_key
, reply
;
644 AUTH_NTLMSSP_STATE
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
647 DEBUG(5,("pipe_ntlmssp_verify_final: pipe %s checking user details\n",
648 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
)));
652 /* this has to be done as root in order to verify the password */
654 status
= auth_ntlmssp_update(a
, *p_resp_blob
, &reply
);
657 /* Don't generate a reply. */
658 data_blob_free(&reply
);
660 if (!NT_STATUS_IS_OK(status
)) {
664 /* Finally - if the pipe negotiated integrity (sign) or privacy (seal)
665 ensure the underlying NTLMSSP flags are also set. If not we should
668 if (p
->auth
.auth_level
== DCERPC_AUTH_LEVEL_INTEGRITY
) {
669 if (!(a
->ntlmssp_state
->neg_flags
& NTLMSSP_NEGOTIATE_SIGN
)) {
670 DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet integrity requested "
671 "but client declined signing.\n",
672 get_pipe_name_from_syntax(talloc_tos(),
677 if (p
->auth
.auth_level
== DCERPC_AUTH_LEVEL_PRIVACY
) {
678 if (!(a
->ntlmssp_state
->neg_flags
& NTLMSSP_NEGOTIATE_SEAL
)) {
679 DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet privacy requested "
680 "but client declined sealing.\n",
681 get_pipe_name_from_syntax(talloc_tos(),
687 DEBUG(5, ("pipe_ntlmssp_verify_final: OK: user: %s domain: %s "
688 "workstation: %s\n", a
->ntlmssp_state
->user
,
689 a
->ntlmssp_state
->domain
, a
->ntlmssp_state
->workstation
));
691 if (a
->server_info
->ptok
== NULL
) {
692 DEBUG(1,("Error: Authmodule failed to provide nt_user_token\n"));
696 TALLOC_FREE(p
->server_info
);
698 p
->server_info
= copy_serverinfo(p
, a
->server_info
);
699 if (p
->server_info
== NULL
) {
700 DEBUG(0, ("copy_serverinfo failed\n"));
705 * We're an authenticated bind over smb, so the session key needs to
706 * be set to "SystemLibraryDTC". Weird, but this is what Windows
707 * does. See the RPC-SAMBA3SESSIONKEY.
710 session_key
= generic_session_key();
711 if (session_key
.data
== NULL
) {
715 ret
= server_info_set_session_key(p
->server_info
, session_key
);
717 data_blob_free(&session_key
);
722 /*******************************************************************
723 The switch table for the pipe names and the functions to handle them.
724 *******************************************************************/
731 struct ndr_syntax_id rpc_interface
;
732 const struct api_struct
*cmds
;
736 static struct rpc_table
*rpc_lookup
;
737 static int rpc_lookup_size
;
739 /*******************************************************************
740 This is the "stage3" NTLMSSP response after a bind request and reply.
741 *******************************************************************/
743 bool api_pipe_bind_auth3(pipes_struct
*p
, prs_struct
*rpc_in_p
)
745 RPC_HDR_AUTH auth_info
;
751 DEBUG(5,("api_pipe_bind_auth3: decode request. %d\n", __LINE__
));
753 if (p
->hdr
.auth_len
== 0) {
754 DEBUG(0,("api_pipe_bind_auth3: No auth field sent !\n"));
758 /* 4 bytes padding. */
759 if (!prs_uint32("pad", rpc_in_p
, 0, &pad
)) {
760 DEBUG(0,("api_pipe_bind_auth3: unmarshall of 4 byte pad failed.\n"));
765 * Decode the authentication verifier response.
768 if(!smb_io_rpc_hdr_auth("", &auth_info
, rpc_in_p
, 0)) {
769 DEBUG(0,("api_pipe_bind_auth3: unmarshall of RPC_HDR_AUTH failed.\n"));
773 if (auth_info
.auth_type
!= DCERPC_AUTH_TYPE_NTLMSSP
) {
774 DEBUG(0,("api_pipe_bind_auth3: incorrect auth type (%u).\n",
775 (unsigned int)auth_info
.auth_type
));
779 blob
= data_blob(NULL
,p
->hdr
.auth_len
);
781 if (!prs_copy_data_out((char *)blob
.data
, rpc_in_p
, p
->hdr
.auth_len
)) {
782 DEBUG(0,("api_pipe_bind_auth3: Failed to pull %u bytes - the response blob.\n",
783 (unsigned int)p
->hdr
.auth_len
));
788 * The following call actually checks the challenge/response data.
789 * for correctness against the given DOMAIN\user name.
792 if (!pipe_ntlmssp_verify_final(p
, &blob
)) {
796 data_blob_free(&blob
);
798 p
->pipe_bound
= True
;
804 data_blob_free(&blob
);
805 free_pipe_ntlmssp_auth_data(&p
->auth
);
806 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
811 /*******************************************************************
812 Marshall a bind_nak pdu.
813 *******************************************************************/
815 static bool setup_bind_nak(pipes_struct
*p
)
820 /* Free any memory in the current return data buffer. */
821 prs_mem_free(&p
->out_data
.rdata
);
824 * Marshall directly into the outgoing PDU space. We
825 * must do this as we need to set to the bind response
826 * header and are never sending more than one PDU here.
829 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
832 * Initialize a bind_nak header.
835 init_rpc_hdr(&nak_hdr
, DCERPC_PKT_BIND_NAK
, DCERPC_PFC_FLAG_FIRST
| DCERPC_PFC_FLAG_LAST
,
836 p
->hdr
.call_id
, RPC_HEADER_LEN
+ sizeof(uint16
), 0);
839 * Marshall the header into the outgoing PDU.
842 if(!smb_io_rpc_hdr("", &nak_hdr
, &p
->out_data
.frag
, 0)) {
843 DEBUG(0,("setup_bind_nak: marshalling of RPC_HDR failed.\n"));
844 prs_mem_free(&p
->out_data
.frag
);
849 * Now add the reject reason.
852 if(!prs_uint16("reject code", &p
->out_data
.frag
, 0, &zero
)) {
853 prs_mem_free(&p
->out_data
.frag
);
857 p
->out_data
.data_sent_length
= 0;
858 p
->out_data
.current_pdu_sent
= 0;
860 if (p
->auth
.auth_data_free_func
) {
861 (*p
->auth
.auth_data_free_func
)(&p
->auth
);
863 p
->auth
.auth_level
= DCERPC_AUTH_LEVEL_NONE
;
864 p
->auth
.auth_type
= PIPE_AUTH_TYPE_NONE
;
865 p
->pipe_bound
= False
;
870 /*******************************************************************
871 Marshall a fault pdu.
872 *******************************************************************/
874 bool setup_fault_pdu(pipes_struct
*p
, NTSTATUS status
)
877 RPC_HDR_RESP hdr_resp
;
878 RPC_HDR_FAULT fault_resp
;
880 /* Free any memory in the current return data buffer. */
881 prs_mem_free(&p
->out_data
.rdata
);
884 * Marshall directly into the outgoing PDU space. We
885 * must do this as we need to set to the bind response
886 * header and are never sending more than one PDU here.
889 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
892 * Initialize a fault header.
895 init_rpc_hdr(&fault_hdr
, DCERPC_PKT_FAULT
, DCERPC_PFC_FLAG_FIRST
| DCERPC_PFC_FLAG_LAST
| DCERPC_PFC_FLAG_DID_NOT_EXECUTE
,
896 p
->hdr
.call_id
, RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+ RPC_HDR_FAULT_LEN
, 0);
899 * Initialize the HDR_RESP and FAULT parts of the PDU.
902 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
904 fault_resp
.status
= status
;
905 fault_resp
.reserved
= 0;
908 * Marshall the header into the outgoing PDU.
911 if(!smb_io_rpc_hdr("", &fault_hdr
, &p
->out_data
.frag
, 0)) {
912 DEBUG(0,("setup_fault_pdu: marshalling of RPC_HDR failed.\n"));
913 prs_mem_free(&p
->out_data
.frag
);
917 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &p
->out_data
.frag
, 0)) {
918 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_RESP.\n"));
919 prs_mem_free(&p
->out_data
.frag
);
923 if(!smb_io_rpc_hdr_fault("fault", &fault_resp
, &p
->out_data
.frag
, 0)) {
924 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_FAULT.\n"));
925 prs_mem_free(&p
->out_data
.frag
);
929 p
->out_data
.data_sent_length
= 0;
930 p
->out_data
.current_pdu_sent
= 0;
936 /*******************************************************************
937 Marshall a cancel_ack pdu.
938 We should probably check the auth-verifier here.
939 *******************************************************************/
941 bool setup_cancel_ack_reply(pipes_struct
*p
, prs_struct
*rpc_in_p
)
943 prs_struct outgoing_pdu
;
944 RPC_HDR ack_reply_hdr
;
946 /* Free any memory in the current return data buffer. */
947 prs_mem_free(&p
->out_data
.rdata
);
950 * Marshall directly into the outgoing PDU space. We
951 * must do this as we need to set to the bind response
952 * header and are never sending more than one PDU here.
955 prs_init_empty( &outgoing_pdu
, p
->mem_ctx
, MARSHALL
);
956 prs_give_memory( &outgoing_pdu
, (char *)p
->out_data
.current_pdu
, sizeof(p
->out_data
.current_pdu
), False
);
959 * Initialize a cancel_ack header.
962 init_rpc_hdr(&ack_reply_hdr
, DCERPC_PKT_CANCEL_ACK
, DCERPC_PFC_FLAG_FIRST
| DCERPC_PFC_FLAG_LAST
,
963 p
->hdr
.call_id
, RPC_HEADER_LEN
, 0);
966 * Marshall the header into the outgoing PDU.
969 if(!smb_io_rpc_hdr("", &ack_reply_hdr
, &outgoing_pdu
, 0)) {
970 DEBUG(0,("setup_cancel_ack_reply: marshalling of RPC_HDR failed.\n"));
971 prs_mem_free(&outgoing_pdu
);
975 p
->out_data
.data_sent_length
= 0;
976 p
->out_data
.current_pdu_len
= prs_offset(&outgoing_pdu
);
977 p
->out_data
.current_pdu_sent
= 0;
979 prs_mem_free(&outgoing_pdu
);
984 /*******************************************************************
985 Ensure a bind request has the correct abstract & transfer interface.
986 Used to reject unknown binds from Win2k.
987 *******************************************************************/
989 static bool check_bind_req(struct pipes_struct
*p
,
990 struct ndr_syntax_id
* abstract
,
991 struct ndr_syntax_id
* transfer
,
995 struct pipe_rpc_fns
*context_fns
;
997 DEBUG(3,("check_bind_req for %s\n",
998 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
)));
1000 /* we have to check all now since win2k introduced a new UUID on the lsaprpc pipe */
1002 for (i
=0; i
<rpc_lookup_size
; i
++) {
1003 DEBUGADD(10, ("checking %s\n", rpc_lookup
[i
].pipe
.clnt
));
1004 if (ndr_syntax_id_equal(
1005 abstract
, &rpc_lookup
[i
].rpc_interface
)
1006 && ndr_syntax_id_equal(
1007 transfer
, &ndr_transfer_syntax
)) {
1012 if (i
== rpc_lookup_size
) {
1016 context_fns
= SMB_MALLOC_P(struct pipe_rpc_fns
);
1017 if (context_fns
== NULL
) {
1018 DEBUG(0,("check_bind_req: malloc() failed!\n"));
1022 context_fns
->cmds
= rpc_lookup
[i
].cmds
;
1023 context_fns
->n_cmds
= rpc_lookup
[i
].n_cmds
;
1024 context_fns
->context_id
= context_id
;
1026 /* add to the list of open contexts */
1028 DLIST_ADD( p
->contexts
, context_fns
);
1033 /*******************************************************************
1034 Register commands to an RPC pipe
1035 *******************************************************************/
1037 NTSTATUS
rpc_srv_register(int version
, const char *clnt
, const char *srv
,
1038 const struct ndr_interface_table
*iface
,
1039 const struct api_struct
*cmds
, int size
)
1041 struct rpc_table
*rpc_entry
;
1043 if (!clnt
|| !srv
|| !cmds
) {
1044 return NT_STATUS_INVALID_PARAMETER
;
1047 if (version
!= SMB_RPC_INTERFACE_VERSION
) {
1048 DEBUG(0,("Can't register rpc commands!\n"
1049 "You tried to register a rpc module with SMB_RPC_INTERFACE_VERSION %d"
1050 ", while this version of samba uses version %d!\n",
1051 version
,SMB_RPC_INTERFACE_VERSION
));
1052 return NT_STATUS_OBJECT_TYPE_MISMATCH
;
1057 * we still need to make sure that don't register the same commands twice!!!
1062 /* We use a temporary variable because this call can fail and
1063 rpc_lookup will still be valid afterwards. It could then succeed if
1064 called again later */
1066 rpc_entry
= SMB_REALLOC_ARRAY_KEEP_OLD_ON_ERROR(rpc_lookup
, struct rpc_table
, rpc_lookup_size
);
1067 if (NULL
== rpc_entry
) {
1069 DEBUG(0, ("rpc_pipe_register_commands: memory allocation failed\n"));
1070 return NT_STATUS_NO_MEMORY
;
1072 rpc_lookup
= rpc_entry
;
1075 rpc_entry
= rpc_lookup
+ (rpc_lookup_size
- 1);
1076 ZERO_STRUCTP(rpc_entry
);
1077 rpc_entry
->pipe
.clnt
= SMB_STRDUP(clnt
);
1078 rpc_entry
->pipe
.srv
= SMB_STRDUP(srv
);
1079 rpc_entry
->rpc_interface
= iface
->syntax_id
;
1080 rpc_entry
->cmds
= cmds
;
1081 rpc_entry
->n_cmds
= size
;
1083 return NT_STATUS_OK
;
1087 * Is a named pipe known?
1088 * @param[in] cli_filename The pipe name requested by the client
1089 * @result Do we want to serve this?
1091 bool is_known_pipename(const char *cli_filename
, struct ndr_syntax_id
*syntax
)
1093 const char *pipename
= cli_filename
;
1097 if (strnequal(pipename
, "\\PIPE\\", 6)) {
1101 if (*pipename
== '\\') {
1105 if (lp_disable_spoolss() && strequal(pipename
, "spoolss")) {
1106 DEBUG(10, ("refusing spoolss access\n"));
1110 for (i
=0; i
<rpc_lookup_size
; i
++) {
1111 if (strequal(pipename
, rpc_lookup
[i
].pipe
.clnt
)) {
1112 *syntax
= rpc_lookup
[i
].rpc_interface
;
1117 status
= smb_probe_module("rpc", pipename
);
1118 if (!NT_STATUS_IS_OK(status
)) {
1119 DEBUG(10, ("is_known_pipename: %s unknown\n", cli_filename
));
1122 DEBUG(10, ("is_known_pipename: %s loaded dynamically\n", pipename
));
1125 * Scan the list again for the interface id
1128 for (i
=0; i
<rpc_lookup_size
; i
++) {
1129 if (strequal(pipename
, rpc_lookup
[i
].pipe
.clnt
)) {
1130 *syntax
= rpc_lookup
[i
].rpc_interface
;
1135 DEBUG(10, ("is_known_pipename: pipe %s did not register itself!\n",
1141 /*******************************************************************
1142 Handle a SPNEGO krb5 bind auth.
1143 *******************************************************************/
1145 static bool pipe_spnego_auth_bind_kerberos(pipes_struct
*p
, prs_struct
*rpc_in_p
, RPC_HDR_AUTH
*pauth_info
,
1146 DATA_BLOB
*psecblob
, prs_struct
*pout_auth
)
1151 /*******************************************************************
1152 Handle the first part of a SPNEGO bind auth.
1153 *******************************************************************/
1155 static bool pipe_spnego_auth_bind_negotiate(pipes_struct
*p
, prs_struct
*rpc_in_p
,
1156 RPC_HDR_AUTH
*pauth_info
, prs_struct
*pout_auth
)
1162 char *OIDs
[ASN1_MAX_OIDS
];
1165 bool got_kerberos_mechanism
= false;
1166 AUTH_NTLMSSP_STATE
*a
= NULL
;
1167 RPC_HDR_AUTH auth_info
;
1169 ZERO_STRUCT(secblob
);
1171 ZERO_STRUCT(response
);
1173 /* Grab the SPNEGO blob. */
1174 blob
= data_blob(NULL
,p
->hdr
.auth_len
);
1176 if (!prs_copy_data_out((char *)blob
.data
, rpc_in_p
, p
->hdr
.auth_len
)) {
1177 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to pull %u bytes - the SPNEGO auth header.\n",
1178 (unsigned int)p
->hdr
.auth_len
));
1182 if (blob
.data
[0] != ASN1_APPLICATION(0)) {
1186 /* parse out the OIDs and the first sec blob */
1187 if (!parse_negTokenTarg(blob
, OIDs
, &secblob
)) {
1188 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to parse the security blob.\n"));
1192 if (strcmp(OID_KERBEROS5
, OIDs
[0]) == 0 || strcmp(OID_KERBEROS5_OLD
, OIDs
[0]) == 0) {
1193 got_kerberos_mechanism
= true;
1196 for (i
=0;OIDs
[i
];i
++) {
1197 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got OID %s\n", OIDs
[i
]));
1198 TALLOC_FREE(OIDs
[i
]);
1200 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got secblob of size %lu\n", (unsigned long)secblob
.length
));
1202 if ( got_kerberos_mechanism
&& ((lp_security()==SEC_ADS
) || USE_KERBEROS_KEYTAB
) ) {
1203 bool ret
= pipe_spnego_auth_bind_kerberos(p
, rpc_in_p
, pauth_info
, &secblob
, pout_auth
);
1204 data_blob_free(&secblob
);
1205 data_blob_free(&blob
);
1209 if (p
->auth
.auth_type
== PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
&& p
->auth
.a_u
.auth_ntlmssp_state
) {
1210 /* Free any previous auth type. */
1211 free_pipe_ntlmssp_auth_data(&p
->auth
);
1214 if (!got_kerberos_mechanism
) {
1215 /* Initialize the NTLM engine. */
1216 status
= auth_ntlmssp_start(&a
);
1217 if (!NT_STATUS_IS_OK(status
)) {
1222 * Pass the first security blob of data to it.
1223 * This can return an error or NT_STATUS_MORE_PROCESSING_REQUIRED
1224 * which means we need another packet to complete the bind.
1227 status
= auth_ntlmssp_update(a
, secblob
, &chal
);
1229 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
1230 DEBUG(3,("pipe_spnego_auth_bind_negotiate: auth_ntlmssp_update failed.\n"));
1234 /* Generate the response blob we need for step 2 of the bind. */
1235 response
= spnego_gen_auth_response(&chal
, status
, OID_NTLMSSP
);
1238 * SPNEGO negotiate down to NTLMSSP. The subsequent
1239 * code to process follow-up packets is not complete
1242 response
= spnego_gen_auth_response(NULL
,
1243 NT_STATUS_MORE_PROCESSING_REQUIRED
,
1247 /* Copy the blob into the pout_auth parse struct */
1248 init_rpc_hdr_auth(&auth_info
, DCERPC_AUTH_TYPE_SPNEGO
, pauth_info
->auth_level
, RPC_HDR_AUTH_LEN
, 1);
1249 if(!smb_io_rpc_hdr_auth("", &auth_info
, pout_auth
, 0)) {
1250 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of RPC_HDR_AUTH failed.\n"));
1254 if (!prs_copy_data_in(pout_auth
, (char *)response
.data
, response
.length
)) {
1255 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of data blob failed.\n"));
1259 p
->auth
.a_u
.auth_ntlmssp_state
= a
;
1260 p
->auth
.auth_data_free_func
= &free_pipe_ntlmssp_auth_data
;
1261 p
->auth
.auth_type
= PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
;
1263 data_blob_free(&blob
);
1264 data_blob_free(&secblob
);
1265 data_blob_free(&chal
);
1266 data_blob_free(&response
);
1268 /* We can't set pipe_bound True yet - we need an RPC_ALTER_CONTEXT response packet... */
1273 data_blob_free(&blob
);
1274 data_blob_free(&secblob
);
1275 data_blob_free(&chal
);
1276 data_blob_free(&response
);
1278 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
1283 /*******************************************************************
1284 Handle the second part of a SPNEGO bind auth.
1285 *******************************************************************/
1287 static bool pipe_spnego_auth_bind_continue(pipes_struct
*p
, prs_struct
*rpc_in_p
,
1288 RPC_HDR_AUTH
*pauth_info
, prs_struct
*pout_auth
)
1290 RPC_HDR_AUTH auth_info
;
1291 DATA_BLOB spnego_blob
;
1292 DATA_BLOB auth_blob
;
1293 DATA_BLOB auth_reply
;
1295 AUTH_NTLMSSP_STATE
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
1297 ZERO_STRUCT(spnego_blob
);
1298 ZERO_STRUCT(auth_blob
);
1299 ZERO_STRUCT(auth_reply
);
1300 ZERO_STRUCT(response
);
1303 * NB. If we've negotiated down from krb5 to NTLMSSP we'll currently
1304 * fail here as 'a' == NULL.
1306 if (p
->auth
.auth_type
!= PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
|| !a
) {
1307 DEBUG(0,("pipe_spnego_auth_bind_continue: not in NTLMSSP auth state.\n"));
1311 /* Grab the SPNEGO blob. */
1312 spnego_blob
= data_blob(NULL
,p
->hdr
.auth_len
);
1314 if (!prs_copy_data_out((char *)spnego_blob
.data
, rpc_in_p
, p
->hdr
.auth_len
)) {
1315 DEBUG(0,("pipe_spnego_auth_bind_continue: Failed to pull %u bytes - the SPNEGO auth header.\n",
1316 (unsigned int)p
->hdr
.auth_len
));
1320 if (spnego_blob
.data
[0] != ASN1_CONTEXT(1)) {
1321 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob type.\n"));
1325 if (!spnego_parse_auth(spnego_blob
, &auth_blob
)) {
1326 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob.\n"));
1331 * The following call actually checks the challenge/response data.
1332 * for correctness against the given DOMAIN\user name.
1335 if (!pipe_ntlmssp_verify_final(p
, &auth_blob
)) {
1339 data_blob_free(&spnego_blob
);
1340 data_blob_free(&auth_blob
);
1342 /* Generate the spnego "accept completed" blob - no incoming data. */
1343 response
= spnego_gen_auth_response(&auth_reply
, NT_STATUS_OK
, OID_NTLMSSP
);
1345 /* Copy the blob into the pout_auth parse struct */
1346 init_rpc_hdr_auth(&auth_info
, DCERPC_AUTH_TYPE_SPNEGO
, pauth_info
->auth_level
, RPC_HDR_AUTH_LEN
, 1);
1347 if(!smb_io_rpc_hdr_auth("", &auth_info
, pout_auth
, 0)) {
1348 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of RPC_HDR_AUTH failed.\n"));
1352 if (!prs_copy_data_in(pout_auth
, (char *)response
.data
, response
.length
)) {
1353 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of data blob failed.\n"));
1357 data_blob_free(&auth_reply
);
1358 data_blob_free(&response
);
1360 p
->pipe_bound
= True
;
1366 data_blob_free(&spnego_blob
);
1367 data_blob_free(&auth_blob
);
1368 data_blob_free(&auth_reply
);
1369 data_blob_free(&response
);
1371 free_pipe_ntlmssp_auth_data(&p
->auth
);
1372 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
1377 /*******************************************************************
1378 Handle an schannel bind auth.
1379 *******************************************************************/
1381 static bool pipe_schannel_auth_bind(pipes_struct
*p
, prs_struct
*rpc_in_p
,
1382 RPC_HDR_AUTH
*pauth_info
, prs_struct
*pout_auth
)
1384 RPC_HDR_AUTH auth_info
;
1385 struct NL_AUTH_MESSAGE neg
;
1386 struct NL_AUTH_MESSAGE reply
;
1389 struct netlogon_creds_CredentialState
*creds
;
1390 DATA_BLOB session_key
;
1391 enum ndr_err_code ndr_err
;
1394 blob
= data_blob_const(prs_data_p(rpc_in_p
) + prs_offset(rpc_in_p
),
1395 prs_data_size(rpc_in_p
));
1397 ndr_err
= ndr_pull_struct_blob(&blob
, talloc_tos(), NULL
, &neg
,
1398 (ndr_pull_flags_fn_t
)ndr_pull_NL_AUTH_MESSAGE
);
1399 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
1400 DEBUG(0,("pipe_schannel_auth_bind: Could not unmarshal SCHANNEL auth neg\n"));
1404 if (DEBUGLEVEL
>= 10) {
1405 NDR_PRINT_DEBUG(NL_AUTH_MESSAGE
, &neg
);
1408 if (!(neg
.Flags
& NL_FLAG_OEM_NETBIOS_COMPUTER_NAME
)) {
1409 DEBUG(0,("pipe_schannel_auth_bind: Did not receive netbios computer name\n"));
1414 * The neg.oem_netbios_computer.a key here must match the remote computer name
1415 * given in the DOM_CLNT_SRV.uni_comp_name used on all netlogon pipe
1416 * operations that use credentials.
1420 status
= schannel_fetch_session_key(p
,
1421 neg
.oem_netbios_computer
.a
,
1425 if (!NT_STATUS_IS_OK(status
)) {
1426 DEBUG(0, ("pipe_schannel_auth_bind: Attempt to bind using schannel without successful serverauth2\n"));
1430 p
->auth
.a_u
.schannel_auth
= talloc(p
, struct schannel_state
);
1431 if (!p
->auth
.a_u
.schannel_auth
) {
1436 p
->auth
.a_u
.schannel_auth
->state
= SCHANNEL_STATE_START
;
1437 p
->auth
.a_u
.schannel_auth
->seq_num
= 0;
1438 p
->auth
.a_u
.schannel_auth
->initiator
= false;
1439 p
->auth
.a_u
.schannel_auth
->creds
= creds
;
1442 * JRA. Should we also copy the schannel session key into the pipe session key p->session_key
1443 * here ? We do that for NTLMSSP, but the session key is already set up from the vuser
1444 * struct of the person who opened the pipe. I need to test this further. JRA.
1446 * VL. As we are mapping this to guest set the generic key
1447 * "SystemLibraryDTC" key here. It's a bit difficult to test against
1448 * W2k3, as it does not allow schannel binds against SAMR and LSA
1452 session_key
= generic_session_key();
1453 if (session_key
.data
== NULL
) {
1454 DEBUG(0, ("pipe_schannel_auth_bind: Could not alloc session"
1459 ret
= server_info_set_session_key(p
->server_info
, session_key
);
1461 data_blob_free(&session_key
);
1464 DEBUG(0, ("server_info_set_session_key failed\n"));
1468 init_rpc_hdr_auth(&auth_info
, DCERPC_AUTH_TYPE_SCHANNEL
, pauth_info
->auth_level
, RPC_HDR_AUTH_LEN
, 1);
1469 if(!smb_io_rpc_hdr_auth("", &auth_info
, pout_auth
, 0)) {
1470 DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1474 /*** SCHANNEL verifier ***/
1476 reply
.MessageType
= NL_NEGOTIATE_RESPONSE
;
1478 reply
.Buffer
.dummy
= 5; /* ??? actually I don't think
1479 * this has any meaning
1482 ndr_err
= ndr_push_struct_blob(&blob
, talloc_tos(), NULL
, &reply
,
1483 (ndr_push_flags_fn_t
)ndr_push_NL_AUTH_MESSAGE
);
1484 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
1485 DEBUG(0,("Failed to marshall NL_AUTH_MESSAGE.\n"));
1489 if (DEBUGLEVEL
>= 10) {
1490 NDR_PRINT_DEBUG(NL_AUTH_MESSAGE
, &reply
);
1493 if (!prs_copy_data_in(pout_auth
, (const char *)blob
.data
, blob
.length
)) {
1497 DEBUG(10,("pipe_schannel_auth_bind: schannel auth: domain [%s] myname [%s]\n",
1498 neg
.oem_netbios_domain
.a
, neg
.oem_netbios_computer
.a
));
1500 /* We're finished with this bind - no more packets. */
1501 p
->auth
.auth_data_free_func
= NULL
;
1502 p
->auth
.auth_type
= PIPE_AUTH_TYPE_SCHANNEL
;
1504 p
->pipe_bound
= True
;
1509 /*******************************************************************
1510 Handle an NTLMSSP bind auth.
1511 *******************************************************************/
1513 static bool pipe_ntlmssp_auth_bind(pipes_struct
*p
, prs_struct
*rpc_in_p
,
1514 RPC_HDR_AUTH
*pauth_info
, prs_struct
*pout_auth
)
1516 RPC_HDR_AUTH auth_info
;
1520 AUTH_NTLMSSP_STATE
*a
= NULL
;
1523 ZERO_STRUCT(response
);
1525 /* Grab the NTLMSSP blob. */
1526 blob
= data_blob(NULL
,p
->hdr
.auth_len
);
1528 if (!prs_copy_data_out((char *)blob
.data
, rpc_in_p
, p
->hdr
.auth_len
)) {
1529 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to pull %u bytes - the NTLM auth header.\n",
1530 (unsigned int)p
->hdr
.auth_len
));
1534 if (strncmp((char *)blob
.data
, "NTLMSSP", 7) != 0) {
1535 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to read NTLMSSP in blob\n"));
1539 /* We have an NTLMSSP blob. */
1540 status
= auth_ntlmssp_start(&a
);
1541 if (!NT_STATUS_IS_OK(status
)) {
1542 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_start failed: %s\n",
1543 nt_errstr(status
) ));
1547 status
= auth_ntlmssp_update(a
, blob
, &response
);
1548 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
1549 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_update failed: %s\n",
1550 nt_errstr(status
) ));
1554 data_blob_free(&blob
);
1556 /* Copy the blob into the pout_auth parse struct */
1557 init_rpc_hdr_auth(&auth_info
, DCERPC_AUTH_TYPE_NTLMSSP
, pauth_info
->auth_level
, RPC_HDR_AUTH_LEN
, 1);
1558 if(!smb_io_rpc_hdr_auth("", &auth_info
, pout_auth
, 0)) {
1559 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1563 if (!prs_copy_data_in(pout_auth
, (char *)response
.data
, response
.length
)) {
1564 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of data blob failed.\n"));
1568 p
->auth
.a_u
.auth_ntlmssp_state
= a
;
1569 p
->auth
.auth_data_free_func
= &free_pipe_ntlmssp_auth_data
;
1570 p
->auth
.auth_type
= PIPE_AUTH_TYPE_NTLMSSP
;
1572 data_blob_free(&blob
);
1573 data_blob_free(&response
);
1575 DEBUG(10,("pipe_ntlmssp_auth_bind: NTLMSSP auth started\n"));
1577 /* We can't set pipe_bound True yet - we need an DCERPC_PKT_AUTH3 response packet... */
1582 data_blob_free(&blob
);
1583 data_blob_free(&response
);
1585 free_pipe_ntlmssp_auth_data(&p
->auth
);
1586 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
1590 /*******************************************************************
1591 Respond to a pipe bind request.
1592 *******************************************************************/
1594 bool api_pipe_bind_req(pipes_struct
*p
, prs_struct
*rpc_in_p
)
1598 RPC_HDR_AUTH auth_info
;
1600 fstring ack_pipe_name
;
1601 prs_struct out_hdr_ba
;
1602 prs_struct out_auth
;
1605 unsigned int auth_type
= DCERPC_AUTH_TYPE_NONE
;
1607 /* No rebinds on a bound pipe - use alter context. */
1608 if (p
->pipe_bound
) {
1609 DEBUG(2,("api_pipe_bind_req: rejecting bind request on bound "
1611 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
)));
1612 return setup_bind_nak(p
);
1615 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
1618 * Marshall directly into the outgoing PDU space. We
1619 * must do this as we need to set to the bind response
1620 * header and are never sending more than one PDU here.
1624 * Setup the memory to marshall the ba header, and the
1628 if(!prs_init(&out_hdr_ba
, 1024, p
->mem_ctx
, MARSHALL
)) {
1629 DEBUG(0,("api_pipe_bind_req: malloc out_hdr_ba failed.\n"));
1630 prs_mem_free(&p
->out_data
.frag
);
1634 if(!prs_init(&out_auth
, 1024, p
->mem_ctx
, MARSHALL
)) {
1635 DEBUG(0,("api_pipe_bind_req: malloc out_auth failed.\n"));
1636 prs_mem_free(&p
->out_data
.frag
);
1637 prs_mem_free(&out_hdr_ba
);
1641 DEBUG(5,("api_pipe_bind_req: decode request. %d\n", __LINE__
));
1643 ZERO_STRUCT(hdr_rb
);
1645 /* decode the bind request */
1647 if(!smb_io_rpc_hdr_rb("", &hdr_rb
, rpc_in_p
, 0)) {
1648 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_RB "
1653 if (hdr_rb
.num_contexts
== 0) {
1654 DEBUG(0, ("api_pipe_bind_req: no rpc contexts around\n"));
1659 * Try and find the correct pipe name to ensure
1660 * that this is a pipe name we support.
1663 for (i
= 0; i
< rpc_lookup_size
; i
++) {
1664 if (ndr_syntax_id_equal(&rpc_lookup
[i
].rpc_interface
,
1665 &hdr_rb
.rpc_context
[0].abstract
)) {
1666 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1667 rpc_lookup
[i
].pipe
.clnt
, rpc_lookup
[i
].pipe
.srv
));
1672 if (i
== rpc_lookup_size
) {
1675 status
= smb_probe_module(
1676 "rpc", get_pipe_name_from_syntax(
1678 &hdr_rb
.rpc_context
[0].abstract
));
1680 if (NT_STATUS_IS_ERR(status
)) {
1681 DEBUG(3,("api_pipe_bind_req: Unknown pipe name %s in bind request.\n",
1682 get_pipe_name_from_syntax(
1684 &hdr_rb
.rpc_context
[0].abstract
)));
1685 prs_mem_free(&p
->out_data
.frag
);
1686 prs_mem_free(&out_hdr_ba
);
1687 prs_mem_free(&out_auth
);
1689 return setup_bind_nak(p
);
1692 for (i
= 0; i
< rpc_lookup_size
; i
++) {
1693 if (strequal(rpc_lookup
[i
].pipe
.clnt
,
1694 get_pipe_name_from_syntax(talloc_tos(),
1696 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1697 rpc_lookup
[i
].pipe
.clnt
, rpc_lookup
[i
].pipe
.srv
));
1702 if (i
== rpc_lookup_size
) {
1703 DEBUG(0, ("module %s doesn't provide functions for "
1705 get_pipe_name_from_syntax(talloc_tos(),
1707 get_pipe_name_from_syntax(talloc_tos(),
1713 /* name has to be \PIPE\xxxxx */
1714 fstrcpy(ack_pipe_name
, "\\PIPE\\");
1715 fstrcat(ack_pipe_name
, rpc_lookup
[i
].pipe
.srv
);
1717 DEBUG(5,("api_pipe_bind_req: make response. %d\n", __LINE__
));
1720 * Check if this is an authenticated bind request.
1723 if (p
->hdr
.auth_len
) {
1725 * Decode the authentication verifier.
1728 if(!smb_io_rpc_hdr_auth("", &auth_info
, rpc_in_p
, 0)) {
1729 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1733 auth_type
= auth_info
.auth_type
;
1735 /* Work out if we have to sign or seal etc. */
1736 switch (auth_info
.auth_level
) {
1737 case DCERPC_AUTH_LEVEL_INTEGRITY
:
1738 p
->auth
.auth_level
= DCERPC_AUTH_LEVEL_INTEGRITY
;
1740 case DCERPC_AUTH_LEVEL_PRIVACY
:
1741 p
->auth
.auth_level
= DCERPC_AUTH_LEVEL_PRIVACY
;
1744 DEBUG(0,("api_pipe_bind_req: unexpected auth level (%u).\n",
1745 (unsigned int)auth_info
.auth_level
));
1749 ZERO_STRUCT(auth_info
);
1752 assoc_gid
= hdr_rb
.bba
.assoc_gid
? hdr_rb
.bba
.assoc_gid
: 0x53f0;
1755 case DCERPC_AUTH_TYPE_NTLMSSP
:
1756 if (!pipe_ntlmssp_auth_bind(p
, rpc_in_p
, &auth_info
, &out_auth
)) {
1762 case DCERPC_AUTH_TYPE_SCHANNEL
:
1763 if (!pipe_schannel_auth_bind(p
, rpc_in_p
, &auth_info
, &out_auth
)) {
1768 case DCERPC_AUTH_TYPE_SPNEGO
:
1769 if (!pipe_spnego_auth_bind_negotiate(p
, rpc_in_p
, &auth_info
, &out_auth
)) {
1774 case DCERPC_AUTH_TYPE_NONE
:
1775 /* Unauthenticated bind request. */
1776 /* We're finished - no more packets. */
1777 p
->auth
.auth_type
= PIPE_AUTH_TYPE_NONE
;
1778 /* We must set the pipe auth_level here also. */
1779 p
->auth
.auth_level
= DCERPC_AUTH_LEVEL_NONE
;
1780 p
->pipe_bound
= True
;
1781 /* The session key was initialized from the SMB
1782 * session in make_internal_rpc_pipe_p */
1786 DEBUG(0,("api_pipe_bind_req: unknown auth type %x requested.\n", auth_type
));
1791 * Create the bind response struct.
1794 /* If the requested abstract synt uuid doesn't match our client pipe,
1795 reject the bind_ack & set the transfer interface synt to all 0's,
1796 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1798 Needed when adding entries to a DACL from NT5 - SK */
1800 if(check_bind_req(p
, &hdr_rb
.rpc_context
[0].abstract
, &hdr_rb
.rpc_context
[0].transfer
[0],
1801 hdr_rb
.rpc_context
[0].context_id
)) {
1802 init_rpc_hdr_ba(&hdr_ba
,
1803 RPC_MAX_PDU_FRAG_LEN
,
1804 RPC_MAX_PDU_FRAG_LEN
,
1808 &hdr_rb
.rpc_context
[0].transfer
[0]);
1810 /* Rejection reason: abstract syntax not supported */
1811 init_rpc_hdr_ba(&hdr_ba
, RPC_MAX_PDU_FRAG_LEN
,
1812 RPC_MAX_PDU_FRAG_LEN
, assoc_gid
,
1813 ack_pipe_name
, 0x1, 0x2, 0x1,
1814 &null_ndr_syntax_id
);
1815 p
->pipe_bound
= False
;
1822 if(!smb_io_rpc_hdr_ba("", &hdr_ba
, &out_hdr_ba
, 0)) {
1823 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR_BA failed.\n"));
1828 * Create the header, now we know the length.
1831 if (prs_offset(&out_auth
)) {
1832 auth_len
= prs_offset(&out_auth
) - RPC_HDR_AUTH_LEN
;
1835 init_rpc_hdr(&p
->hdr
, DCERPC_PKT_BIND_ACK
, DCERPC_PFC_FLAG_FIRST
| DCERPC_PFC_FLAG_LAST
,
1837 RPC_HEADER_LEN
+ prs_offset(&out_hdr_ba
) + prs_offset(&out_auth
),
1841 * Marshall the header into the outgoing PDU.
1844 if(!smb_io_rpc_hdr("", &p
->hdr
, &p
->out_data
.frag
, 0)) {
1845 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR failed.\n"));
1850 * Now add the RPC_HDR_BA and any auth needed.
1853 if(!prs_append_prs_data(&p
->out_data
.frag
, &out_hdr_ba
)) {
1854 DEBUG(0,("api_pipe_bind_req: append of RPC_HDR_BA failed.\n"));
1858 if (auth_len
&& !prs_append_prs_data( &p
->out_data
.frag
, &out_auth
)) {
1859 DEBUG(0,("api_pipe_bind_req: append of auth info failed.\n"));
1864 * Setup the lengths for the initial reply.
1867 p
->out_data
.data_sent_length
= 0;
1868 p
->out_data
.current_pdu_sent
= 0;
1870 prs_mem_free(&out_hdr_ba
);
1871 prs_mem_free(&out_auth
);
1877 prs_mem_free(&p
->out_data
.frag
);
1878 prs_mem_free(&out_hdr_ba
);
1879 prs_mem_free(&out_auth
);
1880 return setup_bind_nak(p
);
1883 /****************************************************************************
1884 Deal with an alter context call. Can be third part of 3 leg auth request for
1886 ****************************************************************************/
1888 bool api_pipe_alter_context(pipes_struct
*p
, prs_struct
*rpc_in_p
)
1892 RPC_HDR_AUTH auth_info
;
1894 fstring ack_pipe_name
;
1895 prs_struct out_hdr_ba
;
1896 prs_struct out_auth
;
1899 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
1902 * Marshall directly into the outgoing PDU space. We
1903 * must do this as we need to set to the bind response
1904 * header and are never sending more than one PDU here.
1908 * Setup the memory to marshall the ba header, and the
1912 if(!prs_init(&out_hdr_ba
, 1024, p
->mem_ctx
, MARSHALL
)) {
1913 DEBUG(0,("api_pipe_alter_context: malloc out_hdr_ba failed.\n"));
1914 prs_mem_free(&p
->out_data
.frag
);
1918 if(!prs_init(&out_auth
, 1024, p
->mem_ctx
, MARSHALL
)) {
1919 DEBUG(0,("api_pipe_alter_context: malloc out_auth failed.\n"));
1920 prs_mem_free(&p
->out_data
.frag
);
1921 prs_mem_free(&out_hdr_ba
);
1925 ZERO_STRUCT(hdr_rb
);
1927 DEBUG(5,("api_pipe_alter_context: decode request. %d\n", __LINE__
));
1929 /* decode the alter context request */
1930 if(!smb_io_rpc_hdr_rb("", &hdr_rb
, rpc_in_p
, 0)) {
1931 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_RB struct.\n"));
1935 /* secondary address CAN be NULL
1936 * as the specs say it's ignored.
1937 * It MUST be NULL to have the spoolss working.
1939 fstrcpy(ack_pipe_name
,"");
1941 DEBUG(5,("api_pipe_alter_context: make response. %d\n", __LINE__
));
1944 * Check if this is an authenticated alter context request.
1947 if (p
->hdr
.auth_len
!= 0) {
1949 * Decode the authentication verifier.
1952 if(!smb_io_rpc_hdr_auth("", &auth_info
, rpc_in_p
, 0)) {
1953 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1958 * Currently only the SPNEGO auth type uses the alter ctx
1959 * response in place of the NTLMSSP auth3 type.
1962 if (auth_info
.auth_type
== DCERPC_AUTH_TYPE_SPNEGO
) {
1963 /* We can only finish if the pipe is unbound. */
1964 if (!p
->pipe_bound
) {
1965 if (!pipe_spnego_auth_bind_continue(p
, rpc_in_p
, &auth_info
, &out_auth
)) {
1973 ZERO_STRUCT(auth_info
);
1976 assoc_gid
= hdr_rb
.bba
.assoc_gid
? hdr_rb
.bba
.assoc_gid
: 0x53f0;
1979 * Create the bind response struct.
1982 /* If the requested abstract synt uuid doesn't match our client pipe,
1983 reject the bind_ack & set the transfer interface synt to all 0's,
1984 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1986 Needed when adding entries to a DACL from NT5 - SK */
1988 if(check_bind_req(p
, &hdr_rb
.rpc_context
[0].abstract
, &hdr_rb
.rpc_context
[0].transfer
[0],
1989 hdr_rb
.rpc_context
[0].context_id
)) {
1990 init_rpc_hdr_ba(&hdr_ba
,
1991 RPC_MAX_PDU_FRAG_LEN
,
1992 RPC_MAX_PDU_FRAG_LEN
,
1996 &hdr_rb
.rpc_context
[0].transfer
[0]);
1998 /* Rejection reason: abstract syntax not supported */
1999 init_rpc_hdr_ba(&hdr_ba
, RPC_MAX_PDU_FRAG_LEN
,
2000 RPC_MAX_PDU_FRAG_LEN
, assoc_gid
,
2001 ack_pipe_name
, 0x1, 0x2, 0x1,
2002 &null_ndr_syntax_id
);
2003 p
->pipe_bound
= False
;
2010 if(!smb_io_rpc_hdr_ba("", &hdr_ba
, &out_hdr_ba
, 0)) {
2011 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR_BA failed.\n"));
2016 * Create the header, now we know the length.
2019 if (prs_offset(&out_auth
)) {
2020 auth_len
= prs_offset(&out_auth
) - RPC_HDR_AUTH_LEN
;
2023 init_rpc_hdr(&p
->hdr
, DCERPC_PKT_ALTER_RESP
, DCERPC_PFC_FLAG_FIRST
| DCERPC_PFC_FLAG_LAST
,
2025 RPC_HEADER_LEN
+ prs_offset(&out_hdr_ba
) + prs_offset(&out_auth
),
2029 * Marshall the header into the outgoing PDU.
2032 if(!smb_io_rpc_hdr("", &p
->hdr
, &p
->out_data
.frag
, 0)) {
2033 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR failed.\n"));
2038 * Now add the RPC_HDR_BA and any auth needed.
2041 if(!prs_append_prs_data(&p
->out_data
.frag
, &out_hdr_ba
)) {
2042 DEBUG(0,("api_pipe_alter_context: append of RPC_HDR_BA failed.\n"));
2046 if (auth_len
&& !prs_append_prs_data(&p
->out_data
.frag
, &out_auth
)) {
2047 DEBUG(0,("api_pipe_alter_context: append of auth info failed.\n"));
2052 * Setup the lengths for the initial reply.
2055 p
->out_data
.data_sent_length
= 0;
2056 p
->out_data
.current_pdu_sent
= 0;
2058 prs_mem_free(&out_hdr_ba
);
2059 prs_mem_free(&out_auth
);
2065 prs_mem_free(&p
->out_data
.frag
);
2066 prs_mem_free(&out_hdr_ba
);
2067 prs_mem_free(&out_auth
);
2068 return setup_bind_nak(p
);
2071 /****************************************************************************
2072 Deal with NTLMSSP sign & seal processing on an RPC request.
2073 ****************************************************************************/
2075 bool api_pipe_ntlmssp_auth_process(pipes_struct
*p
, prs_struct
*rpc_in
,
2076 uint32
*p_ss_padding_len
, NTSTATUS
*pstatus
)
2078 RPC_HDR_AUTH auth_info
;
2079 uint32 auth_len
= p
->hdr
.auth_len
;
2080 uint32 save_offset
= prs_offset(rpc_in
);
2081 AUTH_NTLMSSP_STATE
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
2082 unsigned char *data
= NULL
;
2084 unsigned char *full_packet_data
= NULL
;
2085 size_t full_packet_data_len
;
2086 DATA_BLOB auth_blob
;
2088 *pstatus
= NT_STATUS_OK
;
2090 if (p
->auth
.auth_level
== DCERPC_AUTH_LEVEL_NONE
|| p
->auth
.auth_level
== DCERPC_AUTH_LEVEL_CONNECT
) {
2095 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2099 /* Ensure there's enough data for an authenticated request. */
2100 if ((auth_len
> RPC_MAX_SIGN_SIZE
) ||
2101 (RPC_HEADER_LEN
+ RPC_HDR_REQ_LEN
+ RPC_HDR_AUTH_LEN
+ auth_len
> p
->hdr
.frag_len
)) {
2102 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len %u is too large.\n",
2103 (unsigned int)auth_len
));
2104 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2109 * We need the full packet data + length (minus auth stuff) as well as the packet data + length
2110 * after the RPC header.
2111 * We need to pass in the full packet (minus auth len) to the NTLMSSP sign and check seal
2112 * functions as NTLMv2 checks the rpc headers also.
2115 data
= (unsigned char *)(prs_data_p(rpc_in
) + RPC_HDR_REQ_LEN
);
2116 data_len
= (size_t)(p
->hdr
.frag_len
- RPC_HEADER_LEN
- RPC_HDR_REQ_LEN
- RPC_HDR_AUTH_LEN
- auth_len
);
2118 full_packet_data
= p
->in_data
.current_in_pdu
;
2119 full_packet_data_len
= p
->hdr
.frag_len
- auth_len
;
2121 /* Pull the auth header and the following data into a blob. */
2122 if(!prs_set_offset(rpc_in
, RPC_HDR_REQ_LEN
+ data_len
)) {
2123 DEBUG(0,("api_pipe_ntlmssp_auth_process: cannot move offset to %u.\n",
2124 (unsigned int)RPC_HDR_REQ_LEN
+ (unsigned int)data_len
));
2125 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2129 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
, rpc_in
, 0)) {
2130 DEBUG(0,("api_pipe_ntlmssp_auth_process: failed to unmarshall RPC_HDR_AUTH.\n"));
2131 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2135 auth_blob
.data
= (unsigned char *)prs_data_p(rpc_in
) + prs_offset(rpc_in
);
2136 auth_blob
.length
= auth_len
;
2138 switch (p
->auth
.auth_level
) {
2139 case DCERPC_AUTH_LEVEL_PRIVACY
:
2140 /* Data is encrypted. */
2141 *pstatus
= ntlmssp_unseal_packet(a
->ntlmssp_state
,
2144 full_packet_data_len
,
2146 if (!NT_STATUS_IS_OK(*pstatus
)) {
2150 case DCERPC_AUTH_LEVEL_INTEGRITY
:
2151 /* Data is signed. */
2152 *pstatus
= ntlmssp_check_packet(a
->ntlmssp_state
,
2155 full_packet_data_len
,
2157 if (!NT_STATUS_IS_OK(*pstatus
)) {
2162 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2167 * Return the current pointer to the data offset.
2170 if(!prs_set_offset(rpc_in
, save_offset
)) {
2171 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
2172 (unsigned int)save_offset
));
2173 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2178 * Remember the padding length. We must remove it from the real data
2179 * stream once the sign/seal is done.
2182 *p_ss_padding_len
= auth_info
.auth_pad_len
;
2187 /****************************************************************************
2188 Deal with schannel processing on an RPC request.
2189 ****************************************************************************/
2191 bool api_pipe_schannel_process(pipes_struct
*p
, prs_struct
*rpc_in
, uint32
*p_ss_padding_len
)
2195 uint32 save_offset
= prs_offset(rpc_in
);
2196 RPC_HDR_AUTH auth_info
;
2201 auth_len
= p
->hdr
.auth_len
;
2203 if (auth_len
< RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
||
2204 auth_len
> RPC_HEADER_LEN
+
2208 DEBUG(0,("Incorrect auth_len %u.\n", (unsigned int)auth_len
));
2213 * The following is that length of the data we must verify or unseal.
2214 * This doesn't include the RPC headers or the auth_len or the RPC_HDR_AUTH_LEN
2215 * preceeding the auth_data.
2218 if (p
->hdr
.frag_len
< RPC_HEADER_LEN
+ RPC_HDR_REQ_LEN
+ RPC_HDR_AUTH_LEN
+ auth_len
) {
2219 DEBUG(0,("Incorrect frag %u, auth %u.\n",
2220 (unsigned int)p
->hdr
.frag_len
,
2221 (unsigned int)auth_len
));
2225 data_len
= p
->hdr
.frag_len
- RPC_HEADER_LEN
- RPC_HDR_REQ_LEN
-
2226 RPC_HDR_AUTH_LEN
- auth_len
;
2228 DEBUG(5,("data %d auth %d\n", data_len
, auth_len
));
2230 if(!prs_set_offset(rpc_in
, RPC_HDR_REQ_LEN
+ data_len
)) {
2231 DEBUG(0,("cannot move offset to %u.\n",
2232 (unsigned int)RPC_HDR_REQ_LEN
+ data_len
));
2236 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
, rpc_in
, 0)) {
2237 DEBUG(0,("failed to unmarshall RPC_HDR_AUTH.\n"));
2241 if (auth_info
.auth_type
!= DCERPC_AUTH_TYPE_SCHANNEL
) {
2242 DEBUG(0,("Invalid auth info %d on schannel\n",
2243 auth_info
.auth_type
));
2247 blob
= data_blob_const(prs_data_p(rpc_in
) + prs_offset(rpc_in
), auth_len
);
2249 if (DEBUGLEVEL
>= 10) {
2250 dump_NL_AUTH_SIGNATURE(talloc_tos(), &blob
);
2253 data
= (uint8_t *)prs_data_p(rpc_in
)+RPC_HDR_REQ_LEN
;
2255 switch (auth_info
.auth_level
) {
2256 case DCERPC_AUTH_LEVEL_PRIVACY
:
2257 status
= netsec_incoming_packet(p
->auth
.a_u
.schannel_auth
,
2264 case DCERPC_AUTH_LEVEL_INTEGRITY
:
2265 status
= netsec_incoming_packet(p
->auth
.a_u
.schannel_auth
,
2273 status
= NT_STATUS_INTERNAL_ERROR
;
2277 if (!NT_STATUS_IS_OK(status
)) {
2278 DEBUG(0,("failed to unseal packet: %s\n", nt_errstr(status
)));
2283 * Return the current pointer to the data offset.
2286 if(!prs_set_offset(rpc_in
, save_offset
)) {
2287 DEBUG(0,("failed to set offset back to %u\n",
2288 (unsigned int)save_offset
));
2293 * Remember the padding length. We must remove it from the real data
2294 * stream once the sign/seal is done.
2297 *p_ss_padding_len
= auth_info
.auth_pad_len
;
2302 /****************************************************************************
2303 Find the set of RPC functions associated with this context_id
2304 ****************************************************************************/
2306 static PIPE_RPC_FNS
* find_pipe_fns_by_context( PIPE_RPC_FNS
*list
, uint32 context_id
)
2308 PIPE_RPC_FNS
*fns
= NULL
;
2311 DEBUG(0,("find_pipe_fns_by_context: ERROR! No context list for pipe!\n"));
2315 for (fns
=list
; fns
; fns
=fns
->next
) {
2316 if ( fns
->context_id
== context_id
)
2322 /****************************************************************************
2324 ****************************************************************************/
2326 void free_pipe_rpc_context( PIPE_RPC_FNS
*list
)
2328 PIPE_RPC_FNS
*tmp
= list
;
2340 static bool api_rpcTNP(pipes_struct
*p
,
2341 const struct api_struct
*api_rpc_cmds
, int n_cmds
);
2343 /****************************************************************************
2344 Find the correct RPC function to call for this request.
2345 If the pipe is authenticated then become the correct UNIX user
2346 before doing the call.
2347 ****************************************************************************/
2349 bool api_pipe_request(pipes_struct
*p
)
2352 bool changed_user
= False
;
2353 PIPE_RPC_FNS
*pipe_fns
;
2355 if (p
->pipe_bound
&&
2356 ((p
->auth
.auth_type
== PIPE_AUTH_TYPE_NTLMSSP
) ||
2357 (p
->auth
.auth_type
== PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
))) {
2358 if(!become_authenticated_pipe_user(p
)) {
2359 prs_mem_free(&p
->out_data
.rdata
);
2362 changed_user
= True
;
2365 DEBUG(5, ("Requested \\PIPE\\%s\n",
2366 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
)));
2368 /* get the set of RPC functions for this context */
2370 pipe_fns
= find_pipe_fns_by_context(p
->contexts
, p
->hdr_req
.context_id
);
2373 TALLOC_CTX
*frame
= talloc_stackframe();
2374 ret
= api_rpcTNP(p
, pipe_fns
->cmds
, pipe_fns
->n_cmds
);
2378 DEBUG(0,("api_pipe_request: No rpc function table associated with context [%d] on pipe [%s]\n",
2379 p
->hdr_req
.context_id
,
2380 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
)));
2384 unbecome_authenticated_pipe_user();
2390 /*******************************************************************
2391 Calls the underlying RPC function for a named pipe.
2392 ********************************************************************/
2394 static bool api_rpcTNP(pipes_struct
*p
,
2395 const struct api_struct
*api_rpc_cmds
, int n_cmds
)
2398 uint32 offset1
, offset2
;
2400 /* interpret the command */
2401 DEBUG(4,("api_rpcTNP: %s op 0x%x - ",
2402 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
),
2405 if (DEBUGLEVEL
>= 50) {
2407 slprintf(name
, sizeof(name
)-1, "in_%s",
2408 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
));
2409 prs_dump(name
, p
->hdr_req
.opnum
, &p
->in_data
.data
);
2412 for (fn_num
= 0; fn_num
< n_cmds
; fn_num
++) {
2413 if (api_rpc_cmds
[fn_num
].opnum
== p
->hdr_req
.opnum
&& api_rpc_cmds
[fn_num
].fn
!= NULL
) {
2414 DEBUG(3,("api_rpcTNP: rpc command: %s\n", api_rpc_cmds
[fn_num
].name
));
2419 if (fn_num
== n_cmds
) {
2421 * For an unknown RPC just return a fault PDU but
2422 * return True to allow RPC's on the pipe to continue
2423 * and not put the pipe into fault state. JRA.
2425 DEBUG(4, ("unknown\n"));
2426 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
2430 offset1
= prs_offset(&p
->out_data
.rdata
);
2432 DEBUG(6, ("api_rpc_cmds[%d].fn == %p\n",
2433 fn_num
, api_rpc_cmds
[fn_num
].fn
));
2434 /* do the actual command */
2435 if(!api_rpc_cmds
[fn_num
].fn(p
)) {
2436 DEBUG(0,("api_rpcTNP: %s: %s failed.\n",
2437 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
),
2438 api_rpc_cmds
[fn_num
].name
));
2439 prs_mem_free(&p
->out_data
.rdata
);
2443 if (p
->bad_handle_fault_state
) {
2444 DEBUG(4,("api_rpcTNP: bad handle fault return.\n"));
2445 p
->bad_handle_fault_state
= False
;
2446 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_CONTEXT_MISMATCH
));
2450 if (p
->rng_fault_state
) {
2451 DEBUG(4, ("api_rpcTNP: rng fault return\n"));
2452 p
->rng_fault_state
= False
;
2453 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
2457 offset2
= prs_offset(&p
->out_data
.rdata
);
2458 prs_set_offset(&p
->out_data
.rdata
, offset1
);
2459 if (DEBUGLEVEL
>= 50) {
2461 slprintf(name
, sizeof(name
)-1, "out_%s",
2462 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
));
2463 prs_dump(name
, p
->hdr_req
.opnum
, &p
->out_data
.rdata
);
2465 prs_set_offset(&p
->out_data
.rdata
, offset2
);
2467 DEBUG(5,("api_rpcTNP: called %s successfully\n",
2468 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
)));
2470 /* Check for buffer underflow in rpc parsing */
2472 if ((DEBUGLEVEL
>= 10) &&
2473 (prs_offset(&p
->in_data
.data
) != prs_data_size(&p
->in_data
.data
))) {
2474 size_t data_len
= prs_data_size(&p
->in_data
.data
) - prs_offset(&p
->in_data
.data
);
2475 char *data
= (char *)SMB_MALLOC(data_len
);
2477 DEBUG(10, ("api_rpcTNP: rpc input buffer underflow (parse error?)\n"));
2479 prs_uint8s(False
, "", &p
->in_data
.data
, 0, (unsigned char *)data
, (uint32
)data_len
);