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.
32 extern struct current_user current_user
;
35 #define DBGC_CLASS DBGC_RPC_SRV
37 static void free_pipe_ntlmssp_auth_data(struct pipe_auth_data
*auth
)
39 AUTH_NTLMSSP_STATE
*a
= auth
->a_u
.auth_ntlmssp_state
;
44 auth
->a_u
.auth_ntlmssp_state
= NULL
;
47 static DATA_BLOB
generic_session_key(void)
49 return data_blob("SystemLibraryDTC", 16);
52 /*******************************************************************
53 Generate the next PDU to be returned from the data in p->rdata.
55 ********************************************************************/
57 static bool create_next_pdu_ntlmssp(pipes_struct
*p
)
59 RPC_HDR_RESP hdr_resp
;
60 uint32 ss_padding_len
= 0;
61 uint32 data_space_available
;
64 prs_struct outgoing_pdu
;
67 RPC_HDR_AUTH auth_info
;
68 uint8 auth_type
, auth_level
;
69 AUTH_NTLMSSP_STATE
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
72 * If we're in the fault state, keep returning fault PDU's until
73 * the pipe gets closed. JRA.
77 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
81 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
83 /* Change the incoming request header to a response. */
84 p
->hdr
.pkt_type
= RPC_RESPONSE
;
86 /* Set up rpc header flags. */
87 if (p
->out_data
.data_sent_length
== 0) {
88 p
->hdr
.flags
= RPC_FLG_FIRST
;
94 * Work out how much we can fit in a single PDU.
97 data_len_left
= prs_offset(&p
->out_data
.rdata
) - p
->out_data
.data_sent_length
;
100 * Ensure there really is data left to send.
104 DEBUG(0,("create_next_pdu_ntlmssp: no data left to send !\n"));
108 data_space_available
= sizeof(p
->out_data
.current_pdu
) - RPC_HEADER_LEN
- RPC_HDR_RESP_LEN
-
109 RPC_HDR_AUTH_LEN
- NTLMSSP_SIG_SIZE
;
112 * The amount we send is the minimum of the available
113 * space and the amount left to send.
116 data_len
= MIN(data_len_left
, data_space_available
);
119 * Set up the alloc hint. This should be the data left to
123 hdr_resp
.alloc_hint
= data_len_left
;
126 * Work out if this PDU will be the last.
129 if(p
->out_data
.data_sent_length
+ data_len
>= prs_offset(&p
->out_data
.rdata
)) {
130 p
->hdr
.flags
|= RPC_FLG_LAST
;
131 if (data_len_left
% 8) {
132 ss_padding_len
= 8 - (data_len_left
% 8);
133 DEBUG(10,("create_next_pdu_ntlmssp: adding sign/seal padding of %u\n",
139 * Set up the header lengths.
142 p
->hdr
.frag_len
= RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+
143 data_len
+ ss_padding_len
+
144 RPC_HDR_AUTH_LEN
+ NTLMSSP_SIG_SIZE
;
145 p
->hdr
.auth_len
= NTLMSSP_SIG_SIZE
;
149 * Init the parse struct to point at the outgoing
153 prs_init_empty( &outgoing_pdu
, p
->mem_ctx
, MARSHALL
);
154 prs_give_memory( &outgoing_pdu
, (char *)p
->out_data
.current_pdu
, sizeof(p
->out_data
.current_pdu
), False
);
156 /* Store the header in the data stream. */
157 if(!smb_io_rpc_hdr("hdr", &p
->hdr
, &outgoing_pdu
, 0)) {
158 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR.\n"));
159 prs_mem_free(&outgoing_pdu
);
163 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &outgoing_pdu
, 0)) {
164 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_RESP.\n"));
165 prs_mem_free(&outgoing_pdu
);
169 /* Copy the data into the PDU. */
171 if(!prs_append_some_prs_data(&outgoing_pdu
, &p
->out_data
.rdata
, p
->out_data
.data_sent_length
, data_len
)) {
172 DEBUG(0,("create_next_pdu_ntlmssp: failed to copy %u bytes of data.\n", (unsigned int)data_len
));
173 prs_mem_free(&outgoing_pdu
);
177 /* Copy the sign/seal padding data. */
178 if (ss_padding_len
) {
181 memset(pad
, '\0', 8);
182 if (!prs_copy_data_in(&outgoing_pdu
, pad
, ss_padding_len
)) {
183 DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes of pad data.\n",
184 (unsigned int)ss_padding_len
));
185 prs_mem_free(&outgoing_pdu
);
191 /* Now write out the auth header and null blob. */
192 if (p
->auth
.auth_type
== PIPE_AUTH_TYPE_NTLMSSP
) {
193 auth_type
= RPC_NTLMSSP_AUTH_TYPE
;
195 auth_type
= RPC_SPNEGO_AUTH_TYPE
;
197 if (p
->auth
.auth_level
== PIPE_AUTH_LEVEL_PRIVACY
) {
198 auth_level
= RPC_AUTH_LEVEL_PRIVACY
;
200 auth_level
= RPC_AUTH_LEVEL_INTEGRITY
;
203 init_rpc_hdr_auth(&auth_info
, auth_type
, auth_level
, ss_padding_len
, 1 /* context id. */);
204 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
, &outgoing_pdu
, 0)) {
205 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_AUTH.\n"));
206 prs_mem_free(&outgoing_pdu
);
210 /* Generate the sign blob. */
212 switch (p
->auth
.auth_level
) {
213 case PIPE_AUTH_LEVEL_PRIVACY
:
214 /* Data portion is encrypted. */
215 status
= ntlmssp_seal_packet(a
->ntlmssp_state
,
216 (unsigned char *)prs_data_p(&outgoing_pdu
) + RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
,
217 data_len
+ ss_padding_len
,
218 (unsigned char *)prs_data_p(&outgoing_pdu
),
219 (size_t)prs_offset(&outgoing_pdu
),
221 if (!NT_STATUS_IS_OK(status
)) {
222 data_blob_free(&auth_blob
);
223 prs_mem_free(&outgoing_pdu
);
227 case PIPE_AUTH_LEVEL_INTEGRITY
:
228 /* Data is signed. */
229 status
= ntlmssp_sign_packet(a
->ntlmssp_state
,
230 (unsigned char *)prs_data_p(&outgoing_pdu
) + RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
,
231 data_len
+ ss_padding_len
,
232 (unsigned char *)prs_data_p(&outgoing_pdu
),
233 (size_t)prs_offset(&outgoing_pdu
),
235 if (!NT_STATUS_IS_OK(status
)) {
236 data_blob_free(&auth_blob
);
237 prs_mem_free(&outgoing_pdu
);
242 prs_mem_free(&outgoing_pdu
);
246 /* Append the auth blob. */
247 if (!prs_copy_data_in(&outgoing_pdu
, (char *)auth_blob
.data
, NTLMSSP_SIG_SIZE
)) {
248 DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes auth blob.\n",
249 (unsigned int)NTLMSSP_SIG_SIZE
));
250 data_blob_free(&auth_blob
);
251 prs_mem_free(&outgoing_pdu
);
255 data_blob_free(&auth_blob
);
258 * Setup the counts for this PDU.
261 p
->out_data
.data_sent_length
+= data_len
;
262 p
->out_data
.current_pdu_len
= p
->hdr
.frag_len
;
263 p
->out_data
.current_pdu_sent
= 0;
265 prs_mem_free(&outgoing_pdu
);
269 /*******************************************************************
270 Generate the next PDU to be returned from the data in p->rdata.
271 Return an schannel authenticated fragment.
272 ********************************************************************/
274 static bool create_next_pdu_schannel(pipes_struct
*p
)
276 RPC_HDR_RESP hdr_resp
;
277 uint32 ss_padding_len
= 0;
279 uint32 data_space_available
;
280 uint32 data_len_left
;
281 prs_struct outgoing_pdu
;
285 * If we're in the fault state, keep returning fault PDU's until
286 * the pipe gets closed. JRA.
290 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
294 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
296 /* Change the incoming request header to a response. */
297 p
->hdr
.pkt_type
= RPC_RESPONSE
;
299 /* Set up rpc header flags. */
300 if (p
->out_data
.data_sent_length
== 0) {
301 p
->hdr
.flags
= RPC_FLG_FIRST
;
307 * Work out how much we can fit in a single PDU.
310 data_len_left
= prs_offset(&p
->out_data
.rdata
) - p
->out_data
.data_sent_length
;
313 * Ensure there really is data left to send.
317 DEBUG(0,("create_next_pdu_schannel: no data left to send !\n"));
321 data_space_available
= sizeof(p
->out_data
.current_pdu
) - RPC_HEADER_LEN
- RPC_HDR_RESP_LEN
-
322 RPC_HDR_AUTH_LEN
- RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
;
325 * The amount we send is the minimum of the available
326 * space and the amount left to send.
329 data_len
= MIN(data_len_left
, data_space_available
);
332 * Set up the alloc hint. This should be the data left to
336 hdr_resp
.alloc_hint
= data_len_left
;
339 * Work out if this PDU will be the last.
342 if(p
->out_data
.data_sent_length
+ data_len
>= prs_offset(&p
->out_data
.rdata
)) {
343 p
->hdr
.flags
|= RPC_FLG_LAST
;
344 if (data_len_left
% 8) {
345 ss_padding_len
= 8 - (data_len_left
% 8);
346 DEBUG(10,("create_next_pdu_schannel: adding sign/seal padding of %u\n",
351 p
->hdr
.frag_len
= RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+ data_len
+ ss_padding_len
+
352 RPC_HDR_AUTH_LEN
+ RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
;
353 p
->hdr
.auth_len
= RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
;
356 * Init the parse struct to point at the outgoing
360 prs_init_empty( &outgoing_pdu
, p
->mem_ctx
, MARSHALL
);
361 prs_give_memory( &outgoing_pdu
, (char *)p
->out_data
.current_pdu
, sizeof(p
->out_data
.current_pdu
), False
);
363 /* Store the header in the data stream. */
364 if(!smb_io_rpc_hdr("hdr", &p
->hdr
, &outgoing_pdu
, 0)) {
365 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR.\n"));
366 prs_mem_free(&outgoing_pdu
);
370 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &outgoing_pdu
, 0)) {
371 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_RESP.\n"));
372 prs_mem_free(&outgoing_pdu
);
376 /* Store the current offset. */
377 data_pos
= prs_offset(&outgoing_pdu
);
379 /* Copy the data into the PDU. */
381 if(!prs_append_some_prs_data(&outgoing_pdu
, &p
->out_data
.rdata
, p
->out_data
.data_sent_length
, data_len
)) {
382 DEBUG(0,("create_next_pdu_schannel: failed to copy %u bytes of data.\n", (unsigned int)data_len
));
383 prs_mem_free(&outgoing_pdu
);
387 /* Copy the sign/seal padding data. */
388 if (ss_padding_len
) {
390 memset(pad
, '\0', 8);
391 if (!prs_copy_data_in(&outgoing_pdu
, pad
, ss_padding_len
)) {
392 DEBUG(0,("create_next_pdu_schannel: failed to add %u bytes of pad data.\n", (unsigned int)ss_padding_len
));
393 prs_mem_free(&outgoing_pdu
);
400 * Schannel processing.
403 RPC_HDR_AUTH auth_info
;
404 RPC_AUTH_SCHANNEL_CHK verf
;
406 data
= prs_data_p(&outgoing_pdu
) + data_pos
;
407 /* Check it's the type of reply we were expecting to decode */
409 init_rpc_hdr_auth(&auth_info
,
410 RPC_SCHANNEL_AUTH_TYPE
,
411 p
->auth
.auth_level
== PIPE_AUTH_LEVEL_PRIVACY
?
412 RPC_AUTH_LEVEL_PRIVACY
: RPC_AUTH_LEVEL_INTEGRITY
,
415 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
, &outgoing_pdu
, 0)) {
416 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_AUTH.\n"));
417 prs_mem_free(&outgoing_pdu
);
421 schannel_encode(p
->auth
.a_u
.schannel_auth
,
424 &verf
, data
, data_len
+ ss_padding_len
);
426 if (!smb_io_rpc_auth_schannel_chk("", RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
,
427 &verf
, &outgoing_pdu
, 0)) {
428 prs_mem_free(&outgoing_pdu
);
432 p
->auth
.a_u
.schannel_auth
->seq_num
++;
436 * Setup the counts for this PDU.
439 p
->out_data
.data_sent_length
+= data_len
;
440 p
->out_data
.current_pdu_len
= p
->hdr
.frag_len
;
441 p
->out_data
.current_pdu_sent
= 0;
443 prs_mem_free(&outgoing_pdu
);
447 /*******************************************************************
448 Generate the next PDU to be returned from the data in p->rdata.
449 No authentication done.
450 ********************************************************************/
452 static bool create_next_pdu_noauth(pipes_struct
*p
)
454 RPC_HDR_RESP hdr_resp
;
456 uint32 data_space_available
;
457 uint32 data_len_left
;
458 prs_struct outgoing_pdu
;
461 * If we're in the fault state, keep returning fault PDU's until
462 * the pipe gets closed. JRA.
466 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
470 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
472 /* Change the incoming request header to a response. */
473 p
->hdr
.pkt_type
= RPC_RESPONSE
;
475 /* Set up rpc header flags. */
476 if (p
->out_data
.data_sent_length
== 0) {
477 p
->hdr
.flags
= RPC_FLG_FIRST
;
483 * Work out how much we can fit in a single PDU.
486 data_len_left
= prs_offset(&p
->out_data
.rdata
) - p
->out_data
.data_sent_length
;
489 * Ensure there really is data left to send.
493 DEBUG(0,("create_next_pdu_noath: no data left to send !\n"));
497 data_space_available
= sizeof(p
->out_data
.current_pdu
) - RPC_HEADER_LEN
- RPC_HDR_RESP_LEN
;
500 * The amount we send is the minimum of the available
501 * space and the amount left to send.
504 data_len
= MIN(data_len_left
, data_space_available
);
507 * Set up the alloc hint. This should be the data left to
511 hdr_resp
.alloc_hint
= data_len_left
;
514 * Work out if this PDU will be the last.
517 if(p
->out_data
.data_sent_length
+ data_len
>= prs_offset(&p
->out_data
.rdata
)) {
518 p
->hdr
.flags
|= RPC_FLG_LAST
;
522 * Set up the header lengths.
525 p
->hdr
.frag_len
= RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+ data_len
;
529 * Init the parse struct to point at the outgoing
533 prs_init_empty( &outgoing_pdu
, p
->mem_ctx
, MARSHALL
);
534 prs_give_memory( &outgoing_pdu
, (char *)p
->out_data
.current_pdu
, sizeof(p
->out_data
.current_pdu
), False
);
536 /* Store the header in the data stream. */
537 if(!smb_io_rpc_hdr("hdr", &p
->hdr
, &outgoing_pdu
, 0)) {
538 DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR.\n"));
539 prs_mem_free(&outgoing_pdu
);
543 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &outgoing_pdu
, 0)) {
544 DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR_RESP.\n"));
545 prs_mem_free(&outgoing_pdu
);
549 /* Copy the data into the PDU. */
551 if(!prs_append_some_prs_data(&outgoing_pdu
, &p
->out_data
.rdata
, p
->out_data
.data_sent_length
, data_len
)) {
552 DEBUG(0,("create_next_pdu_noauth: failed to copy %u bytes of data.\n", (unsigned int)data_len
));
553 prs_mem_free(&outgoing_pdu
);
558 * Setup the counts for this PDU.
561 p
->out_data
.data_sent_length
+= data_len
;
562 p
->out_data
.current_pdu_len
= p
->hdr
.frag_len
;
563 p
->out_data
.current_pdu_sent
= 0;
565 prs_mem_free(&outgoing_pdu
);
569 /*******************************************************************
570 Generate the next PDU to be returned from the data in p->rdata.
571 ********************************************************************/
573 bool create_next_pdu(pipes_struct
*p
)
575 switch(p
->auth
.auth_level
) {
576 case PIPE_AUTH_LEVEL_NONE
:
577 case PIPE_AUTH_LEVEL_CONNECT
:
578 /* This is incorrect for auth level connect. Fixme. JRA */
579 return create_next_pdu_noauth(p
);
582 switch(p
->auth
.auth_type
) {
583 case PIPE_AUTH_TYPE_NTLMSSP
:
584 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
:
585 return create_next_pdu_ntlmssp(p
);
586 case PIPE_AUTH_TYPE_SCHANNEL
:
587 return create_next_pdu_schannel(p
);
593 DEBUG(0,("create_next_pdu: invalid internal auth level %u / type %u",
594 (unsigned int)p
->auth
.auth_level
,
595 (unsigned int)p
->auth
.auth_type
));
599 /*******************************************************************
600 Process an NTLMSSP authentication response.
601 If this function succeeds, the user has been authenticated
602 and their domain, name and calling workstation stored in
604 *******************************************************************/
606 static bool pipe_ntlmssp_verify_final(pipes_struct
*p
, DATA_BLOB
*p_resp_blob
)
608 DATA_BLOB session_key
, reply
;
610 AUTH_NTLMSSP_STATE
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
613 DEBUG(5,("pipe_ntlmssp_verify_final: pipe %s checking user details\n",
614 get_pipe_name_from_iface(&p
->syntax
)));
618 /* this has to be done as root in order to verify the password */
620 status
= auth_ntlmssp_update(a
, *p_resp_blob
, &reply
);
623 /* Don't generate a reply. */
624 data_blob_free(&reply
);
626 if (!NT_STATUS_IS_OK(status
)) {
630 /* Finally - if the pipe negotiated integrity (sign) or privacy (seal)
631 ensure the underlying NTLMSSP flags are also set. If not we should
634 if (p
->auth
.auth_level
== PIPE_AUTH_LEVEL_INTEGRITY
) {
635 if (!(a
->ntlmssp_state
->neg_flags
& NTLMSSP_NEGOTIATE_SIGN
)) {
636 DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet integrity requested "
637 "but client declined signing.\n",
638 get_pipe_name_from_iface(&p
->syntax
)));
642 if (p
->auth
.auth_level
== PIPE_AUTH_LEVEL_PRIVACY
) {
643 if (!(a
->ntlmssp_state
->neg_flags
& NTLMSSP_NEGOTIATE_SEAL
)) {
644 DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet privacy requested "
645 "but client declined sealing.\n",
646 get_pipe_name_from_iface(&p
->syntax
)));
651 DEBUG(5, ("pipe_ntlmssp_verify_final: OK: user: %s domain: %s "
652 "workstation: %s\n", a
->ntlmssp_state
->user
,
653 a
->ntlmssp_state
->domain
, a
->ntlmssp_state
->workstation
));
655 if (a
->server_info
->ptok
== NULL
) {
656 DEBUG(1,("Error: Authmodule failed to provide nt_user_token\n"));
660 TALLOC_FREE(p
->server_info
);
662 p
->server_info
= copy_serverinfo(p
, a
->server_info
);
663 if (p
->server_info
== NULL
) {
664 DEBUG(0, ("copy_serverinfo failed\n"));
669 * We're an authenticated bind over smb, so the session key needs to
670 * be set to "SystemLibraryDTC". Weird, but this is what Windows
671 * does. See the RPC-SAMBA3SESSIONKEY.
674 session_key
= generic_session_key();
675 if (session_key
.data
== NULL
) {
679 ret
= server_info_set_session_key(p
->server_info
, session_key
);
681 data_blob_free(&session_key
);
686 /*******************************************************************
687 The switch table for the pipe names and the functions to handle them.
688 *******************************************************************/
695 struct ndr_syntax_id rpc_interface
;
696 const struct api_struct
*cmds
;
700 static struct rpc_table
*rpc_lookup
;
701 static int rpc_lookup_size
;
703 /*******************************************************************
704 This is the "stage3" NTLMSSP response after a bind request and reply.
705 *******************************************************************/
707 bool api_pipe_bind_auth3(pipes_struct
*p
, prs_struct
*rpc_in_p
)
709 RPC_HDR_AUTH auth_info
;
715 DEBUG(5,("api_pipe_bind_auth3: decode request. %d\n", __LINE__
));
717 if (p
->hdr
.auth_len
== 0) {
718 DEBUG(0,("api_pipe_bind_auth3: No auth field sent !\n"));
722 /* 4 bytes padding. */
723 if (!prs_uint32("pad", rpc_in_p
, 0, &pad
)) {
724 DEBUG(0,("api_pipe_bind_auth3: unmarshall of 4 byte pad failed.\n"));
729 * Decode the authentication verifier response.
732 if(!smb_io_rpc_hdr_auth("", &auth_info
, rpc_in_p
, 0)) {
733 DEBUG(0,("api_pipe_bind_auth3: unmarshall of RPC_HDR_AUTH failed.\n"));
737 if (auth_info
.auth_type
!= RPC_NTLMSSP_AUTH_TYPE
) {
738 DEBUG(0,("api_pipe_bind_auth3: incorrect auth type (%u).\n",
739 (unsigned int)auth_info
.auth_type
));
743 blob
= data_blob(NULL
,p
->hdr
.auth_len
);
745 if (!prs_copy_data_out((char *)blob
.data
, rpc_in_p
, p
->hdr
.auth_len
)) {
746 DEBUG(0,("api_pipe_bind_auth3: Failed to pull %u bytes - the response blob.\n",
747 (unsigned int)p
->hdr
.auth_len
));
752 * The following call actually checks the challenge/response data.
753 * for correctness against the given DOMAIN\user name.
756 if (!pipe_ntlmssp_verify_final(p
, &blob
)) {
760 data_blob_free(&blob
);
762 p
->pipe_bound
= True
;
768 data_blob_free(&blob
);
769 free_pipe_ntlmssp_auth_data(&p
->auth
);
770 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
775 /*******************************************************************
776 Marshall a bind_nak pdu.
777 *******************************************************************/
779 static bool setup_bind_nak(pipes_struct
*p
)
781 prs_struct outgoing_rpc
;
785 /* Free any memory in the current return data buffer. */
786 prs_mem_free(&p
->out_data
.rdata
);
789 * Marshall directly into the outgoing PDU space. We
790 * must do this as we need to set to the bind response
791 * header and are never sending more than one PDU here.
794 prs_init_empty( &outgoing_rpc
, p
->mem_ctx
, MARSHALL
);
795 prs_give_memory( &outgoing_rpc
, (char *)p
->out_data
.current_pdu
, sizeof(p
->out_data
.current_pdu
), False
);
798 * Initialize a bind_nak header.
801 init_rpc_hdr(&nak_hdr
, RPC_BINDNACK
, RPC_FLG_FIRST
| RPC_FLG_LAST
,
802 p
->hdr
.call_id
, RPC_HEADER_LEN
+ sizeof(uint16
), 0);
805 * Marshall the header into the outgoing PDU.
808 if(!smb_io_rpc_hdr("", &nak_hdr
, &outgoing_rpc
, 0)) {
809 DEBUG(0,("setup_bind_nak: marshalling of RPC_HDR failed.\n"));
810 prs_mem_free(&outgoing_rpc
);
815 * Now add the reject reason.
818 if(!prs_uint16("reject code", &outgoing_rpc
, 0, &zero
)) {
819 prs_mem_free(&outgoing_rpc
);
823 p
->out_data
.data_sent_length
= 0;
824 p
->out_data
.current_pdu_len
= prs_offset(&outgoing_rpc
);
825 p
->out_data
.current_pdu_sent
= 0;
827 if (p
->auth
.auth_data_free_func
) {
828 (*p
->auth
.auth_data_free_func
)(&p
->auth
);
830 p
->auth
.auth_level
= PIPE_AUTH_LEVEL_NONE
;
831 p
->auth
.auth_type
= PIPE_AUTH_TYPE_NONE
;
832 p
->pipe_bound
= False
;
837 /*******************************************************************
838 Marshall a fault pdu.
839 *******************************************************************/
841 bool setup_fault_pdu(pipes_struct
*p
, NTSTATUS status
)
843 prs_struct outgoing_pdu
;
845 RPC_HDR_RESP hdr_resp
;
846 RPC_HDR_FAULT fault_resp
;
848 /* Free any memory in the current return data buffer. */
849 prs_mem_free(&p
->out_data
.rdata
);
852 * Marshall directly into the outgoing PDU space. We
853 * must do this as we need to set to the bind response
854 * header and are never sending more than one PDU here.
857 prs_init_empty( &outgoing_pdu
, p
->mem_ctx
, MARSHALL
);
858 prs_give_memory( &outgoing_pdu
, (char *)p
->out_data
.current_pdu
, sizeof(p
->out_data
.current_pdu
), False
);
861 * Initialize a fault header.
864 init_rpc_hdr(&fault_hdr
, RPC_FAULT
, RPC_FLG_FIRST
| RPC_FLG_LAST
| RPC_FLG_NOCALL
,
865 p
->hdr
.call_id
, RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+ RPC_HDR_FAULT_LEN
, 0);
868 * Initialize the HDR_RESP and FAULT parts of the PDU.
871 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
873 fault_resp
.status
= status
;
874 fault_resp
.reserved
= 0;
877 * Marshall the header into the outgoing PDU.
880 if(!smb_io_rpc_hdr("", &fault_hdr
, &outgoing_pdu
, 0)) {
881 DEBUG(0,("setup_fault_pdu: marshalling of RPC_HDR failed.\n"));
882 prs_mem_free(&outgoing_pdu
);
886 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &outgoing_pdu
, 0)) {
887 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_RESP.\n"));
888 prs_mem_free(&outgoing_pdu
);
892 if(!smb_io_rpc_hdr_fault("fault", &fault_resp
, &outgoing_pdu
, 0)) {
893 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_FAULT.\n"));
894 prs_mem_free(&outgoing_pdu
);
898 p
->out_data
.data_sent_length
= 0;
899 p
->out_data
.current_pdu_len
= prs_offset(&outgoing_pdu
);
900 p
->out_data
.current_pdu_sent
= 0;
902 prs_mem_free(&outgoing_pdu
);
907 /*******************************************************************
908 Marshall a cancel_ack pdu.
909 We should probably check the auth-verifier here.
910 *******************************************************************/
912 bool setup_cancel_ack_reply(pipes_struct
*p
, prs_struct
*rpc_in_p
)
914 prs_struct outgoing_pdu
;
915 RPC_HDR ack_reply_hdr
;
917 /* Free any memory in the current return data buffer. */
918 prs_mem_free(&p
->out_data
.rdata
);
921 * Marshall directly into the outgoing PDU space. We
922 * must do this as we need to set to the bind response
923 * header and are never sending more than one PDU here.
926 prs_init_empty( &outgoing_pdu
, p
->mem_ctx
, MARSHALL
);
927 prs_give_memory( &outgoing_pdu
, (char *)p
->out_data
.current_pdu
, sizeof(p
->out_data
.current_pdu
), False
);
930 * Initialize a cancel_ack header.
933 init_rpc_hdr(&ack_reply_hdr
, RPC_CANCEL_ACK
, RPC_FLG_FIRST
| RPC_FLG_LAST
,
934 p
->hdr
.call_id
, RPC_HEADER_LEN
, 0);
937 * Marshall the header into the outgoing PDU.
940 if(!smb_io_rpc_hdr("", &ack_reply_hdr
, &outgoing_pdu
, 0)) {
941 DEBUG(0,("setup_cancel_ack_reply: marshalling of RPC_HDR failed.\n"));
942 prs_mem_free(&outgoing_pdu
);
946 p
->out_data
.data_sent_length
= 0;
947 p
->out_data
.current_pdu_len
= prs_offset(&outgoing_pdu
);
948 p
->out_data
.current_pdu_sent
= 0;
950 prs_mem_free(&outgoing_pdu
);
955 /*******************************************************************
956 Ensure a bind request has the correct abstract & transfer interface.
957 Used to reject unknown binds from Win2k.
958 *******************************************************************/
960 bool check_bind_req(struct pipes_struct
*p
, RPC_IFACE
* abstract
,
961 RPC_IFACE
* transfer
, uint32 context_id
)
964 struct pipe_rpc_fns
*context_fns
;
966 DEBUG(3,("check_bind_req for %s\n",
967 get_pipe_name_from_iface(&p
->syntax
)));
969 /* we have to check all now since win2k introduced a new UUID on the lsaprpc pipe */
971 for (i
=0; i
<rpc_lookup_size
; i
++) {
972 DEBUGADD(10, ("checking %s\n", rpc_lookup
[i
].pipe
.clnt
));
973 if (ndr_syntax_id_equal(
974 abstract
, &rpc_lookup
[i
].rpc_interface
)
975 && ndr_syntax_id_equal(
976 transfer
, &ndr_transfer_syntax
)) {
981 if (i
== rpc_lookup_size
) {
985 context_fns
= SMB_MALLOC_P(struct pipe_rpc_fns
);
986 if (context_fns
== NULL
) {
987 DEBUG(0,("check_bind_req: malloc() failed!\n"));
991 context_fns
->cmds
= rpc_lookup
[i
].cmds
;
992 context_fns
->n_cmds
= rpc_lookup
[i
].n_cmds
;
993 context_fns
->context_id
= context_id
;
995 /* add to the list of open contexts */
997 DLIST_ADD( p
->contexts
, context_fns
);
1002 /*******************************************************************
1003 Register commands to an RPC pipe
1004 *******************************************************************/
1006 NTSTATUS
rpc_srv_register(int version
, const char *clnt
, const char *srv
,
1007 const struct ndr_interface_table
*iface
,
1008 const struct api_struct
*cmds
, int size
)
1010 struct rpc_table
*rpc_entry
;
1012 if (!clnt
|| !srv
|| !cmds
) {
1013 return NT_STATUS_INVALID_PARAMETER
;
1016 if (version
!= SMB_RPC_INTERFACE_VERSION
) {
1017 DEBUG(0,("Can't register rpc commands!\n"
1018 "You tried to register a rpc module with SMB_RPC_INTERFACE_VERSION %d"
1019 ", while this version of samba uses version %d!\n",
1020 version
,SMB_RPC_INTERFACE_VERSION
));
1021 return NT_STATUS_OBJECT_TYPE_MISMATCH
;
1026 * we still need to make sure that don't register the same commands twice!!!
1031 /* We use a temporary variable because this call can fail and
1032 rpc_lookup will still be valid afterwards. It could then succeed if
1033 called again later */
1035 rpc_entry
= SMB_REALLOC_ARRAY_KEEP_OLD_ON_ERROR(rpc_lookup
, struct rpc_table
, rpc_lookup_size
);
1036 if (NULL
== rpc_entry
) {
1038 DEBUG(0, ("rpc_pipe_register_commands: memory allocation failed\n"));
1039 return NT_STATUS_NO_MEMORY
;
1041 rpc_lookup
= rpc_entry
;
1044 rpc_entry
= rpc_lookup
+ (rpc_lookup_size
- 1);
1045 ZERO_STRUCTP(rpc_entry
);
1046 rpc_entry
->pipe
.clnt
= SMB_STRDUP(clnt
);
1047 rpc_entry
->pipe
.srv
= SMB_STRDUP(srv
);
1048 rpc_entry
->rpc_interface
= iface
->syntax_id
;
1049 rpc_entry
->cmds
= cmds
;
1050 rpc_entry
->n_cmds
= size
;
1052 return NT_STATUS_OK
;
1056 * Is a named pipe known?
1057 * @param[in] cli_filename The pipe name requested by the client
1058 * @result Do we want to serve this?
1060 bool is_known_pipename(const char *cli_filename
, struct ndr_syntax_id
*syntax
)
1062 const char *pipename
= cli_filename
;
1065 if (strnequal(pipename
, "\\PIPE\\", 6)) {
1069 if (*pipename
== '\\') {
1073 if (lp_disable_spoolss() && strequal(pipename
, "spoolss")) {
1074 DEBUG(10, ("refusing spoolss access\n"));
1078 for (i
=0; i
<rpc_lookup_size
; i
++) {
1079 if (strequal(pipename
, rpc_lookup
[i
].pipe
.clnt
)) {
1080 *syntax
= rpc_lookup
[i
].rpc_interface
;
1085 DEBUG(10, ("is_known_pipename: %s unknown\n", cli_filename
));
1089 /*******************************************************************
1090 Handle a SPNEGO krb5 bind auth.
1091 *******************************************************************/
1093 static bool pipe_spnego_auth_bind_kerberos(pipes_struct
*p
, prs_struct
*rpc_in_p
, RPC_HDR_AUTH
*pauth_info
,
1094 DATA_BLOB
*psecblob
, prs_struct
*pout_auth
)
1099 /*******************************************************************
1100 Handle the first part of a SPNEGO bind auth.
1101 *******************************************************************/
1103 static bool pipe_spnego_auth_bind_negotiate(pipes_struct
*p
, prs_struct
*rpc_in_p
,
1104 RPC_HDR_AUTH
*pauth_info
, prs_struct
*pout_auth
)
1110 char *OIDs
[ASN1_MAX_OIDS
];
1113 bool got_kerberos_mechanism
= false;
1114 AUTH_NTLMSSP_STATE
*a
= NULL
;
1115 RPC_HDR_AUTH auth_info
;
1117 ZERO_STRUCT(secblob
);
1119 ZERO_STRUCT(response
);
1121 /* Grab the SPNEGO blob. */
1122 blob
= data_blob(NULL
,p
->hdr
.auth_len
);
1124 if (!prs_copy_data_out((char *)blob
.data
, rpc_in_p
, p
->hdr
.auth_len
)) {
1125 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to pull %u bytes - the SPNEGO auth header.\n",
1126 (unsigned int)p
->hdr
.auth_len
));
1130 if (blob
.data
[0] != ASN1_APPLICATION(0)) {
1134 /* parse out the OIDs and the first sec blob */
1135 if (!parse_negTokenTarg(blob
, OIDs
, &secblob
)) {
1136 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to parse the security blob.\n"));
1140 if (strcmp(OID_KERBEROS5
, OIDs
[0]) == 0 || strcmp(OID_KERBEROS5_OLD
, OIDs
[0]) == 0) {
1141 got_kerberos_mechanism
= true;
1144 for (i
=0;OIDs
[i
];i
++) {
1145 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got OID %s\n", OIDs
[i
]));
1146 TALLOC_FREE(OIDs
[i
]);
1148 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got secblob of size %lu\n", (unsigned long)secblob
.length
));
1150 if ( got_kerberos_mechanism
&& ((lp_security()==SEC_ADS
) || USE_KERBEROS_KEYTAB
) ) {
1151 bool ret
= pipe_spnego_auth_bind_kerberos(p
, rpc_in_p
, pauth_info
, &secblob
, pout_auth
);
1152 data_blob_free(&secblob
);
1153 data_blob_free(&blob
);
1157 if (p
->auth
.auth_type
== PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
&& p
->auth
.a_u
.auth_ntlmssp_state
) {
1158 /* Free any previous auth type. */
1159 free_pipe_ntlmssp_auth_data(&p
->auth
);
1162 if (!got_kerberos_mechanism
) {
1163 /* Initialize the NTLM engine. */
1164 status
= auth_ntlmssp_start(&a
);
1165 if (!NT_STATUS_IS_OK(status
)) {
1170 * Pass the first security blob of data to it.
1171 * This can return an error or NT_STATUS_MORE_PROCESSING_REQUIRED
1172 * which means we need another packet to complete the bind.
1175 status
= auth_ntlmssp_update(a
, secblob
, &chal
);
1177 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
1178 DEBUG(3,("pipe_spnego_auth_bind_negotiate: auth_ntlmssp_update failed.\n"));
1182 /* Generate the response blob we need for step 2 of the bind. */
1183 response
= spnego_gen_auth_response(&chal
, status
, OID_NTLMSSP
);
1186 * SPNEGO negotiate down to NTLMSSP. The subsequent
1187 * code to process follow-up packets is not complete
1190 response
= spnego_gen_auth_response(NULL
,
1191 NT_STATUS_MORE_PROCESSING_REQUIRED
,
1195 /* Copy the blob into the pout_auth parse struct */
1196 init_rpc_hdr_auth(&auth_info
, RPC_SPNEGO_AUTH_TYPE
, pauth_info
->auth_level
, RPC_HDR_AUTH_LEN
, 1);
1197 if(!smb_io_rpc_hdr_auth("", &auth_info
, pout_auth
, 0)) {
1198 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of RPC_HDR_AUTH failed.\n"));
1202 if (!prs_copy_data_in(pout_auth
, (char *)response
.data
, response
.length
)) {
1203 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of data blob failed.\n"));
1207 p
->auth
.a_u
.auth_ntlmssp_state
= a
;
1208 p
->auth
.auth_data_free_func
= &free_pipe_ntlmssp_auth_data
;
1209 p
->auth
.auth_type
= PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
;
1211 data_blob_free(&blob
);
1212 data_blob_free(&secblob
);
1213 data_blob_free(&chal
);
1214 data_blob_free(&response
);
1216 /* We can't set pipe_bound True yet - we need an RPC_ALTER_CONTEXT response packet... */
1221 data_blob_free(&blob
);
1222 data_blob_free(&secblob
);
1223 data_blob_free(&chal
);
1224 data_blob_free(&response
);
1226 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
1231 /*******************************************************************
1232 Handle the second part of a SPNEGO bind auth.
1233 *******************************************************************/
1235 static bool pipe_spnego_auth_bind_continue(pipes_struct
*p
, prs_struct
*rpc_in_p
,
1236 RPC_HDR_AUTH
*pauth_info
, prs_struct
*pout_auth
)
1238 RPC_HDR_AUTH auth_info
;
1239 DATA_BLOB spnego_blob
;
1240 DATA_BLOB auth_blob
;
1241 DATA_BLOB auth_reply
;
1243 AUTH_NTLMSSP_STATE
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
1245 ZERO_STRUCT(spnego_blob
);
1246 ZERO_STRUCT(auth_blob
);
1247 ZERO_STRUCT(auth_reply
);
1248 ZERO_STRUCT(response
);
1251 * NB. If we've negotiated down from krb5 to NTLMSSP we'll currently
1252 * fail here as 'a' == NULL.
1254 if (p
->auth
.auth_type
!= PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
|| !a
) {
1255 DEBUG(0,("pipe_spnego_auth_bind_continue: not in NTLMSSP auth state.\n"));
1259 /* Grab the SPNEGO blob. */
1260 spnego_blob
= data_blob(NULL
,p
->hdr
.auth_len
);
1262 if (!prs_copy_data_out((char *)spnego_blob
.data
, rpc_in_p
, p
->hdr
.auth_len
)) {
1263 DEBUG(0,("pipe_spnego_auth_bind_continue: Failed to pull %u bytes - the SPNEGO auth header.\n",
1264 (unsigned int)p
->hdr
.auth_len
));
1268 if (spnego_blob
.data
[0] != ASN1_CONTEXT(1)) {
1269 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob type.\n"));
1273 if (!spnego_parse_auth(spnego_blob
, &auth_blob
)) {
1274 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob.\n"));
1279 * The following call actually checks the challenge/response data.
1280 * for correctness against the given DOMAIN\user name.
1283 if (!pipe_ntlmssp_verify_final(p
, &auth_blob
)) {
1287 data_blob_free(&spnego_blob
);
1288 data_blob_free(&auth_blob
);
1290 /* Generate the spnego "accept completed" blob - no incoming data. */
1291 response
= spnego_gen_auth_response(&auth_reply
, NT_STATUS_OK
, OID_NTLMSSP
);
1293 /* Copy the blob into the pout_auth parse struct */
1294 init_rpc_hdr_auth(&auth_info
, RPC_SPNEGO_AUTH_TYPE
, pauth_info
->auth_level
, RPC_HDR_AUTH_LEN
, 1);
1295 if(!smb_io_rpc_hdr_auth("", &auth_info
, pout_auth
, 0)) {
1296 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of RPC_HDR_AUTH failed.\n"));
1300 if (!prs_copy_data_in(pout_auth
, (char *)response
.data
, response
.length
)) {
1301 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of data blob failed.\n"));
1305 data_blob_free(&auth_reply
);
1306 data_blob_free(&response
);
1308 p
->pipe_bound
= True
;
1314 data_blob_free(&spnego_blob
);
1315 data_blob_free(&auth_blob
);
1316 data_blob_free(&auth_reply
);
1317 data_blob_free(&response
);
1319 free_pipe_ntlmssp_auth_data(&p
->auth
);
1320 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
1325 /*******************************************************************
1326 Handle an schannel bind auth.
1327 *******************************************************************/
1329 static bool pipe_schannel_auth_bind(pipes_struct
*p
, prs_struct
*rpc_in_p
,
1330 RPC_HDR_AUTH
*pauth_info
, prs_struct
*pout_auth
)
1332 RPC_HDR_AUTH auth_info
;
1333 RPC_AUTH_SCHANNEL_NEG neg
;
1334 RPC_AUTH_VERIFIER auth_verifier
;
1336 struct dcinfo
*pdcinfo
;
1338 DATA_BLOB session_key
;
1340 if (!smb_io_rpc_auth_schannel_neg("", &neg
, rpc_in_p
, 0)) {
1341 DEBUG(0,("pipe_schannel_auth_bind: Could not unmarshal SCHANNEL auth neg\n"));
1346 * The neg.myname key here must match the remote computer name
1347 * given in the DOM_CLNT_SRV.uni_comp_name used on all netlogon pipe
1348 * operations that use credentials.
1352 ret
= secrets_restore_schannel_session_info(p
->mem_ctx
, neg
.myname
, &pdcinfo
);
1356 DEBUG(0, ("pipe_schannel_auth_bind: Attempt to bind using schannel without successful serverauth2\n"));
1360 p
->auth
.a_u
.schannel_auth
= talloc(p
, struct schannel_auth_struct
);
1361 if (!p
->auth
.a_u
.schannel_auth
) {
1362 TALLOC_FREE(pdcinfo
);
1366 memset(p
->auth
.a_u
.schannel_auth
->sess_key
, 0, sizeof(p
->auth
.a_u
.schannel_auth
->sess_key
));
1367 memcpy(p
->auth
.a_u
.schannel_auth
->sess_key
, pdcinfo
->sess_key
,
1368 sizeof(pdcinfo
->sess_key
));
1370 TALLOC_FREE(pdcinfo
);
1372 p
->auth
.a_u
.schannel_auth
->seq_num
= 0;
1375 * JRA. Should we also copy the schannel session key into the pipe session key p->session_key
1376 * here ? We do that for NTLMSSP, but the session key is already set up from the vuser
1377 * struct of the person who opened the pipe. I need to test this further. JRA.
1379 * VL. As we are mapping this to guest set the generic key
1380 * "SystemLibraryDTC" key here. It's a bit difficult to test against
1381 * W2k3, as it does not allow schannel binds against SAMR and LSA
1385 session_key
= generic_session_key();
1386 if (session_key
.data
== NULL
) {
1387 DEBUG(0, ("pipe_schannel_auth_bind: Could not alloc session"
1392 ret
= server_info_set_session_key(p
->server_info
, session_key
);
1394 data_blob_free(&session_key
);
1397 DEBUG(0, ("server_info_set_session_key failed\n"));
1401 init_rpc_hdr_auth(&auth_info
, RPC_SCHANNEL_AUTH_TYPE
, pauth_info
->auth_level
, RPC_HDR_AUTH_LEN
, 1);
1402 if(!smb_io_rpc_hdr_auth("", &auth_info
, pout_auth
, 0)) {
1403 DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1407 /*** SCHANNEL verifier ***/
1409 init_rpc_auth_verifier(&auth_verifier
, "\001", 0x0);
1410 if(!smb_io_rpc_schannel_verifier("", &auth_verifier
, pout_auth
, 0)) {
1411 DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_AUTH_VERIFIER failed.\n"));
1415 prs_align(pout_auth
);
1418 if(!prs_uint32("flags ", pout_auth
, 0, &flags
)) {
1422 DEBUG(10,("pipe_schannel_auth_bind: schannel auth: domain [%s] myname [%s]\n",
1423 neg
.domain
, neg
.myname
));
1425 /* We're finished with this bind - no more packets. */
1426 p
->auth
.auth_data_free_func
= NULL
;
1427 p
->auth
.auth_type
= PIPE_AUTH_TYPE_SCHANNEL
;
1429 p
->pipe_bound
= True
;
1434 /*******************************************************************
1435 Handle an NTLMSSP bind auth.
1436 *******************************************************************/
1438 static bool pipe_ntlmssp_auth_bind(pipes_struct
*p
, prs_struct
*rpc_in_p
,
1439 RPC_HDR_AUTH
*pauth_info
, prs_struct
*pout_auth
)
1441 RPC_HDR_AUTH auth_info
;
1445 AUTH_NTLMSSP_STATE
*a
= NULL
;
1448 ZERO_STRUCT(response
);
1450 /* Grab the NTLMSSP blob. */
1451 blob
= data_blob(NULL
,p
->hdr
.auth_len
);
1453 if (!prs_copy_data_out((char *)blob
.data
, rpc_in_p
, p
->hdr
.auth_len
)) {
1454 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to pull %u bytes - the NTLM auth header.\n",
1455 (unsigned int)p
->hdr
.auth_len
));
1459 if (strncmp((char *)blob
.data
, "NTLMSSP", 7) != 0) {
1460 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to read NTLMSSP in blob\n"));
1464 /* We have an NTLMSSP blob. */
1465 status
= auth_ntlmssp_start(&a
);
1466 if (!NT_STATUS_IS_OK(status
)) {
1467 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_start failed: %s\n",
1468 nt_errstr(status
) ));
1472 status
= auth_ntlmssp_update(a
, blob
, &response
);
1473 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
1474 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_update failed: %s\n",
1475 nt_errstr(status
) ));
1479 data_blob_free(&blob
);
1481 /* Copy the blob into the pout_auth parse struct */
1482 init_rpc_hdr_auth(&auth_info
, RPC_NTLMSSP_AUTH_TYPE
, pauth_info
->auth_level
, RPC_HDR_AUTH_LEN
, 1);
1483 if(!smb_io_rpc_hdr_auth("", &auth_info
, pout_auth
, 0)) {
1484 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1488 if (!prs_copy_data_in(pout_auth
, (char *)response
.data
, response
.length
)) {
1489 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of data blob failed.\n"));
1493 p
->auth
.a_u
.auth_ntlmssp_state
= a
;
1494 p
->auth
.auth_data_free_func
= &free_pipe_ntlmssp_auth_data
;
1495 p
->auth
.auth_type
= PIPE_AUTH_TYPE_NTLMSSP
;
1497 data_blob_free(&blob
);
1498 data_blob_free(&response
);
1500 DEBUG(10,("pipe_ntlmssp_auth_bind: NTLMSSP auth started\n"));
1502 /* We can't set pipe_bound True yet - we need an RPC_AUTH3 response packet... */
1507 data_blob_free(&blob
);
1508 data_blob_free(&response
);
1510 free_pipe_ntlmssp_auth_data(&p
->auth
);
1511 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
1515 /*******************************************************************
1516 Respond to a pipe bind request.
1517 *******************************************************************/
1519 bool api_pipe_bind_req(pipes_struct
*p
, prs_struct
*rpc_in_p
)
1523 RPC_HDR_AUTH auth_info
;
1525 fstring ack_pipe_name
;
1526 prs_struct out_hdr_ba
;
1527 prs_struct out_auth
;
1528 prs_struct outgoing_rpc
;
1531 unsigned int auth_type
= RPC_ANONYMOUS_AUTH_TYPE
;
1533 /* No rebinds on a bound pipe - use alter context. */
1534 if (p
->pipe_bound
) {
1535 DEBUG(2,("api_pipe_bind_req: rejecting bind request on bound "
1536 "pipe %s.\n", get_pipe_name_from_iface(&p
->syntax
)));
1537 return setup_bind_nak(p
);
1540 prs_init_empty( &outgoing_rpc
, p
->mem_ctx
, MARSHALL
);
1543 * Marshall directly into the outgoing PDU space. We
1544 * must do this as we need to set to the bind response
1545 * header and are never sending more than one PDU here.
1548 prs_give_memory( &outgoing_rpc
, (char *)p
->out_data
.current_pdu
, sizeof(p
->out_data
.current_pdu
), False
);
1551 * Setup the memory to marshall the ba header, and the
1555 if(!prs_init(&out_hdr_ba
, 1024, p
->mem_ctx
, MARSHALL
)) {
1556 DEBUG(0,("api_pipe_bind_req: malloc out_hdr_ba failed.\n"));
1557 prs_mem_free(&outgoing_rpc
);
1561 if(!prs_init(&out_auth
, 1024, p
->mem_ctx
, MARSHALL
)) {
1562 DEBUG(0,("api_pipe_bind_req: malloc out_auth failed.\n"));
1563 prs_mem_free(&outgoing_rpc
);
1564 prs_mem_free(&out_hdr_ba
);
1568 DEBUG(5,("api_pipe_bind_req: decode request. %d\n", __LINE__
));
1570 ZERO_STRUCT(hdr_rb
);
1572 /* decode the bind request */
1574 if(!smb_io_rpc_hdr_rb("", &hdr_rb
, rpc_in_p
, 0)) {
1575 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_RB "
1580 if (hdr_rb
.num_contexts
== 0) {
1581 DEBUG(0, ("api_pipe_bind_req: no rpc contexts around\n"));
1586 * Try and find the correct pipe name to ensure
1587 * that this is a pipe name we support.
1590 for (i
= 0; i
< rpc_lookup_size
; i
++) {
1591 if (ndr_syntax_id_equal(&rpc_lookup
[i
].rpc_interface
,
1592 &hdr_rb
.rpc_context
[0].abstract
)) {
1593 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1594 rpc_lookup
[i
].pipe
.clnt
, rpc_lookup
[i
].pipe
.srv
));
1599 if (i
== rpc_lookup_size
) {
1602 status
= smb_probe_module(
1603 "rpc", get_pipe_name_from_iface(
1604 &hdr_rb
.rpc_context
[0].abstract
));
1606 if (NT_STATUS_IS_ERR(status
)) {
1607 DEBUG(3,("api_pipe_bind_req: Unknown pipe name %s in bind request.\n",
1608 get_pipe_name_from_iface(&hdr_rb
.rpc_context
[0].abstract
)));
1609 prs_mem_free(&outgoing_rpc
);
1610 prs_mem_free(&out_hdr_ba
);
1611 prs_mem_free(&out_auth
);
1613 return setup_bind_nak(p
);
1616 for (i
= 0; i
< rpc_lookup_size
; i
++) {
1617 if (strequal(rpc_lookup
[i
].pipe
.clnt
,
1618 get_pipe_name_from_iface(&p
->syntax
))) {
1619 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1620 rpc_lookup
[i
].pipe
.clnt
, rpc_lookup
[i
].pipe
.srv
));
1625 if (i
== rpc_lookup_size
) {
1626 DEBUG(0, ("module %s doesn't provide functions for "
1628 get_pipe_name_from_iface(&p
->syntax
),
1629 get_pipe_name_from_iface(&p
->syntax
)));
1634 /* name has to be \PIPE\xxxxx */
1635 fstrcpy(ack_pipe_name
, "\\PIPE\\");
1636 fstrcat(ack_pipe_name
, rpc_lookup
[i
].pipe
.srv
);
1638 DEBUG(5,("api_pipe_bind_req: make response. %d\n", __LINE__
));
1641 * Check if this is an authenticated bind request.
1644 if (p
->hdr
.auth_len
) {
1646 * Decode the authentication verifier.
1649 if(!smb_io_rpc_hdr_auth("", &auth_info
, rpc_in_p
, 0)) {
1650 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1654 auth_type
= auth_info
.auth_type
;
1656 /* Work out if we have to sign or seal etc. */
1657 switch (auth_info
.auth_level
) {
1658 case RPC_AUTH_LEVEL_INTEGRITY
:
1659 p
->auth
.auth_level
= PIPE_AUTH_LEVEL_INTEGRITY
;
1661 case RPC_AUTH_LEVEL_PRIVACY
:
1662 p
->auth
.auth_level
= PIPE_AUTH_LEVEL_PRIVACY
;
1665 DEBUG(0,("api_pipe_bind_req: unexpected auth level (%u).\n",
1666 (unsigned int)auth_info
.auth_level
));
1670 ZERO_STRUCT(auth_info
);
1673 assoc_gid
= hdr_rb
.bba
.assoc_gid
? hdr_rb
.bba
.assoc_gid
: 0x53f0;
1676 case RPC_NTLMSSP_AUTH_TYPE
:
1677 if (!pipe_ntlmssp_auth_bind(p
, rpc_in_p
, &auth_info
, &out_auth
)) {
1683 case RPC_SCHANNEL_AUTH_TYPE
:
1684 if (!pipe_schannel_auth_bind(p
, rpc_in_p
, &auth_info
, &out_auth
)) {
1689 case RPC_SPNEGO_AUTH_TYPE
:
1690 if (!pipe_spnego_auth_bind_negotiate(p
, rpc_in_p
, &auth_info
, &out_auth
)) {
1695 case RPC_ANONYMOUS_AUTH_TYPE
:
1696 /* Unauthenticated bind request. */
1697 /* We're finished - no more packets. */
1698 p
->auth
.auth_type
= PIPE_AUTH_TYPE_NONE
;
1699 /* We must set the pipe auth_level here also. */
1700 p
->auth
.auth_level
= PIPE_AUTH_LEVEL_NONE
;
1701 p
->pipe_bound
= True
;
1702 /* The session key was initialized from the SMB
1703 * session in make_internal_rpc_pipe_p */
1707 DEBUG(0,("api_pipe_bind_req: unknown auth type %x requested.\n", auth_type
));
1712 * Create the bind response struct.
1715 /* If the requested abstract synt uuid doesn't match our client pipe,
1716 reject the bind_ack & set the transfer interface synt to all 0's,
1717 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1719 Needed when adding entries to a DACL from NT5 - SK */
1721 if(check_bind_req(p
, &hdr_rb
.rpc_context
[0].abstract
, &hdr_rb
.rpc_context
[0].transfer
[0],
1722 hdr_rb
.rpc_context
[0].context_id
)) {
1723 init_rpc_hdr_ba(&hdr_ba
,
1724 RPC_MAX_PDU_FRAG_LEN
,
1725 RPC_MAX_PDU_FRAG_LEN
,
1729 &hdr_rb
.rpc_context
[0].transfer
[0]);
1731 RPC_IFACE null_interface
;
1732 ZERO_STRUCT(null_interface
);
1733 /* Rejection reason: abstract syntax not supported */
1734 init_rpc_hdr_ba(&hdr_ba
, RPC_MAX_PDU_FRAG_LEN
,
1735 RPC_MAX_PDU_FRAG_LEN
, assoc_gid
,
1736 ack_pipe_name
, 0x1, 0x2, 0x1,
1738 p
->pipe_bound
= False
;
1745 if(!smb_io_rpc_hdr_ba("", &hdr_ba
, &out_hdr_ba
, 0)) {
1746 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR_BA failed.\n"));
1751 * Create the header, now we know the length.
1754 if (prs_offset(&out_auth
)) {
1755 auth_len
= prs_offset(&out_auth
) - RPC_HDR_AUTH_LEN
;
1758 init_rpc_hdr(&p
->hdr
, RPC_BINDACK
, RPC_FLG_FIRST
| RPC_FLG_LAST
,
1760 RPC_HEADER_LEN
+ prs_offset(&out_hdr_ba
) + prs_offset(&out_auth
),
1764 * Marshall the header into the outgoing PDU.
1767 if(!smb_io_rpc_hdr("", &p
->hdr
, &outgoing_rpc
, 0)) {
1768 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR failed.\n"));
1773 * Now add the RPC_HDR_BA and any auth needed.
1776 if(!prs_append_prs_data( &outgoing_rpc
, &out_hdr_ba
)) {
1777 DEBUG(0,("api_pipe_bind_req: append of RPC_HDR_BA failed.\n"));
1781 if (auth_len
&& !prs_append_prs_data( &outgoing_rpc
, &out_auth
)) {
1782 DEBUG(0,("api_pipe_bind_req: append of auth info failed.\n"));
1787 * Setup the lengths for the initial reply.
1790 p
->out_data
.data_sent_length
= 0;
1791 p
->out_data
.current_pdu_len
= prs_offset(&outgoing_rpc
);
1792 p
->out_data
.current_pdu_sent
= 0;
1794 prs_mem_free(&out_hdr_ba
);
1795 prs_mem_free(&out_auth
);
1801 prs_mem_free(&outgoing_rpc
);
1802 prs_mem_free(&out_hdr_ba
);
1803 prs_mem_free(&out_auth
);
1804 return setup_bind_nak(p
);
1807 /****************************************************************************
1808 Deal with an alter context call. Can be third part of 3 leg auth request for
1810 ****************************************************************************/
1812 bool api_pipe_alter_context(pipes_struct
*p
, prs_struct
*rpc_in_p
)
1816 RPC_HDR_AUTH auth_info
;
1818 fstring ack_pipe_name
;
1819 prs_struct out_hdr_ba
;
1820 prs_struct out_auth
;
1821 prs_struct outgoing_rpc
;
1824 prs_init_empty( &outgoing_rpc
, p
->mem_ctx
, MARSHALL
);
1827 * Marshall directly into the outgoing PDU space. We
1828 * must do this as we need to set to the bind response
1829 * header and are never sending more than one PDU here.
1832 prs_give_memory( &outgoing_rpc
, (char *)p
->out_data
.current_pdu
, sizeof(p
->out_data
.current_pdu
), False
);
1835 * Setup the memory to marshall the ba header, and the
1839 if(!prs_init(&out_hdr_ba
, 1024, p
->mem_ctx
, MARSHALL
)) {
1840 DEBUG(0,("api_pipe_alter_context: malloc out_hdr_ba failed.\n"));
1841 prs_mem_free(&outgoing_rpc
);
1845 if(!prs_init(&out_auth
, 1024, p
->mem_ctx
, MARSHALL
)) {
1846 DEBUG(0,("api_pipe_alter_context: malloc out_auth failed.\n"));
1847 prs_mem_free(&outgoing_rpc
);
1848 prs_mem_free(&out_hdr_ba
);
1852 ZERO_STRUCT(hdr_rb
);
1854 DEBUG(5,("api_pipe_alter_context: decode request. %d\n", __LINE__
));
1856 /* decode the alter context request */
1857 if(!smb_io_rpc_hdr_rb("", &hdr_rb
, rpc_in_p
, 0)) {
1858 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_RB struct.\n"));
1862 /* secondary address CAN be NULL
1863 * as the specs say it's ignored.
1864 * It MUST be NULL to have the spoolss working.
1866 fstrcpy(ack_pipe_name
,"");
1868 DEBUG(5,("api_pipe_alter_context: make response. %d\n", __LINE__
));
1871 * Check if this is an authenticated alter context request.
1874 if (p
->hdr
.auth_len
!= 0) {
1876 * Decode the authentication verifier.
1879 if(!smb_io_rpc_hdr_auth("", &auth_info
, rpc_in_p
, 0)) {
1880 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1885 * Currently only the SPNEGO auth type uses the alter ctx
1886 * response in place of the NTLMSSP auth3 type.
1889 if (auth_info
.auth_type
== RPC_SPNEGO_AUTH_TYPE
) {
1890 /* We can only finish if the pipe is unbound. */
1891 if (!p
->pipe_bound
) {
1892 if (!pipe_spnego_auth_bind_continue(p
, rpc_in_p
, &auth_info
, &out_auth
)) {
1900 ZERO_STRUCT(auth_info
);
1903 assoc_gid
= hdr_rb
.bba
.assoc_gid
? hdr_rb
.bba
.assoc_gid
: 0x53f0;
1906 * Create the bind response struct.
1909 /* If the requested abstract synt uuid doesn't match our client pipe,
1910 reject the bind_ack & set the transfer interface synt to all 0's,
1911 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1913 Needed when adding entries to a DACL from NT5 - SK */
1915 if(check_bind_req(p
, &hdr_rb
.rpc_context
[0].abstract
, &hdr_rb
.rpc_context
[0].transfer
[0],
1916 hdr_rb
.rpc_context
[0].context_id
)) {
1917 init_rpc_hdr_ba(&hdr_ba
,
1918 RPC_MAX_PDU_FRAG_LEN
,
1919 RPC_MAX_PDU_FRAG_LEN
,
1923 &hdr_rb
.rpc_context
[0].transfer
[0]);
1925 RPC_IFACE null_interface
;
1926 ZERO_STRUCT(null_interface
);
1927 /* Rejection reason: abstract syntax not supported */
1928 init_rpc_hdr_ba(&hdr_ba
, RPC_MAX_PDU_FRAG_LEN
,
1929 RPC_MAX_PDU_FRAG_LEN
, assoc_gid
,
1930 ack_pipe_name
, 0x1, 0x2, 0x1,
1932 p
->pipe_bound
= False
;
1939 if(!smb_io_rpc_hdr_ba("", &hdr_ba
, &out_hdr_ba
, 0)) {
1940 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR_BA failed.\n"));
1945 * Create the header, now we know the length.
1948 if (prs_offset(&out_auth
)) {
1949 auth_len
= prs_offset(&out_auth
) - RPC_HDR_AUTH_LEN
;
1952 init_rpc_hdr(&p
->hdr
, RPC_ALTCONTRESP
, RPC_FLG_FIRST
| RPC_FLG_LAST
,
1954 RPC_HEADER_LEN
+ prs_offset(&out_hdr_ba
) + prs_offset(&out_auth
),
1958 * Marshall the header into the outgoing PDU.
1961 if(!smb_io_rpc_hdr("", &p
->hdr
, &outgoing_rpc
, 0)) {
1962 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR failed.\n"));
1967 * Now add the RPC_HDR_BA and any auth needed.
1970 if(!prs_append_prs_data( &outgoing_rpc
, &out_hdr_ba
)) {
1971 DEBUG(0,("api_pipe_alter_context: append of RPC_HDR_BA failed.\n"));
1975 if (auth_len
&& !prs_append_prs_data( &outgoing_rpc
, &out_auth
)) {
1976 DEBUG(0,("api_pipe_alter_context: append of auth info failed.\n"));
1981 * Setup the lengths for the initial reply.
1984 p
->out_data
.data_sent_length
= 0;
1985 p
->out_data
.current_pdu_len
= prs_offset(&outgoing_rpc
);
1986 p
->out_data
.current_pdu_sent
= 0;
1988 prs_mem_free(&out_hdr_ba
);
1989 prs_mem_free(&out_auth
);
1995 prs_mem_free(&outgoing_rpc
);
1996 prs_mem_free(&out_hdr_ba
);
1997 prs_mem_free(&out_auth
);
1998 return setup_bind_nak(p
);
2001 /****************************************************************************
2002 Deal with NTLMSSP sign & seal processing on an RPC request.
2003 ****************************************************************************/
2005 bool api_pipe_ntlmssp_auth_process(pipes_struct
*p
, prs_struct
*rpc_in
,
2006 uint32
*p_ss_padding_len
, NTSTATUS
*pstatus
)
2008 RPC_HDR_AUTH auth_info
;
2009 uint32 auth_len
= p
->hdr
.auth_len
;
2010 uint32 save_offset
= prs_offset(rpc_in
);
2011 AUTH_NTLMSSP_STATE
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
2012 unsigned char *data
= NULL
;
2014 unsigned char *full_packet_data
= NULL
;
2015 size_t full_packet_data_len
;
2016 DATA_BLOB auth_blob
;
2018 *pstatus
= NT_STATUS_OK
;
2020 if (p
->auth
.auth_level
== PIPE_AUTH_LEVEL_NONE
|| p
->auth
.auth_level
== PIPE_AUTH_LEVEL_CONNECT
) {
2025 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2029 /* Ensure there's enough data for an authenticated request. */
2030 if ((auth_len
> RPC_MAX_SIGN_SIZE
) ||
2031 (RPC_HEADER_LEN
+ RPC_HDR_REQ_LEN
+ RPC_HDR_AUTH_LEN
+ auth_len
> p
->hdr
.frag_len
)) {
2032 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len %u is too large.\n",
2033 (unsigned int)auth_len
));
2034 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2039 * We need the full packet data + length (minus auth stuff) as well as the packet data + length
2040 * after the RPC header.
2041 * We need to pass in the full packet (minus auth len) to the NTLMSSP sign and check seal
2042 * functions as NTLMv2 checks the rpc headers also.
2045 data
= (unsigned char *)(prs_data_p(rpc_in
) + RPC_HDR_REQ_LEN
);
2046 data_len
= (size_t)(p
->hdr
.frag_len
- RPC_HEADER_LEN
- RPC_HDR_REQ_LEN
- RPC_HDR_AUTH_LEN
- auth_len
);
2048 full_packet_data
= p
->in_data
.current_in_pdu
;
2049 full_packet_data_len
= p
->hdr
.frag_len
- auth_len
;
2051 /* Pull the auth header and the following data into a blob. */
2052 if(!prs_set_offset(rpc_in
, RPC_HDR_REQ_LEN
+ data_len
)) {
2053 DEBUG(0,("api_pipe_ntlmssp_auth_process: cannot move offset to %u.\n",
2054 (unsigned int)RPC_HDR_REQ_LEN
+ (unsigned int)data_len
));
2055 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2059 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
, rpc_in
, 0)) {
2060 DEBUG(0,("api_pipe_ntlmssp_auth_process: failed to unmarshall RPC_HDR_AUTH.\n"));
2061 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2065 auth_blob
.data
= (unsigned char *)prs_data_p(rpc_in
) + prs_offset(rpc_in
);
2066 auth_blob
.length
= auth_len
;
2068 switch (p
->auth
.auth_level
) {
2069 case PIPE_AUTH_LEVEL_PRIVACY
:
2070 /* Data is encrypted. */
2071 *pstatus
= ntlmssp_unseal_packet(a
->ntlmssp_state
,
2074 full_packet_data_len
,
2076 if (!NT_STATUS_IS_OK(*pstatus
)) {
2080 case PIPE_AUTH_LEVEL_INTEGRITY
:
2081 /* Data is signed. */
2082 *pstatus
= ntlmssp_check_packet(a
->ntlmssp_state
,
2085 full_packet_data_len
,
2087 if (!NT_STATUS_IS_OK(*pstatus
)) {
2092 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2097 * Return the current pointer to the data offset.
2100 if(!prs_set_offset(rpc_in
, save_offset
)) {
2101 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
2102 (unsigned int)save_offset
));
2103 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2108 * Remember the padding length. We must remove it from the real data
2109 * stream once the sign/seal is done.
2112 *p_ss_padding_len
= auth_info
.auth_pad_len
;
2117 /****************************************************************************
2118 Deal with schannel processing on an RPC request.
2119 ****************************************************************************/
2121 bool api_pipe_schannel_process(pipes_struct
*p
, prs_struct
*rpc_in
, uint32
*p_ss_padding_len
)
2125 uint32 save_offset
= prs_offset(rpc_in
);
2126 RPC_HDR_AUTH auth_info
;
2127 RPC_AUTH_SCHANNEL_CHK schannel_chk
;
2129 auth_len
= p
->hdr
.auth_len
;
2131 if (auth_len
!= RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
) {
2132 DEBUG(0,("Incorrect auth_len %u.\n", (unsigned int)auth_len
));
2137 * The following is that length of the data we must verify or unseal.
2138 * This doesn't include the RPC headers or the auth_len or the RPC_HDR_AUTH_LEN
2139 * preceeding the auth_data.
2142 if (p
->hdr
.frag_len
< RPC_HEADER_LEN
+ RPC_HDR_REQ_LEN
+ RPC_HDR_AUTH_LEN
+ auth_len
) {
2143 DEBUG(0,("Incorrect frag %u, auth %u.\n",
2144 (unsigned int)p
->hdr
.frag_len
,
2145 (unsigned int)auth_len
));
2149 data_len
= p
->hdr
.frag_len
- RPC_HEADER_LEN
- RPC_HDR_REQ_LEN
-
2150 RPC_HDR_AUTH_LEN
- auth_len
;
2152 DEBUG(5,("data %d auth %d\n", data_len
, auth_len
));
2154 if(!prs_set_offset(rpc_in
, RPC_HDR_REQ_LEN
+ data_len
)) {
2155 DEBUG(0,("cannot move offset to %u.\n",
2156 (unsigned int)RPC_HDR_REQ_LEN
+ data_len
));
2160 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
, rpc_in
, 0)) {
2161 DEBUG(0,("failed to unmarshall RPC_HDR_AUTH.\n"));
2165 if (auth_info
.auth_type
!= RPC_SCHANNEL_AUTH_TYPE
) {
2166 DEBUG(0,("Invalid auth info %d on schannel\n",
2167 auth_info
.auth_type
));
2171 if(!smb_io_rpc_auth_schannel_chk("", RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
, &schannel_chk
, rpc_in
, 0)) {
2172 DEBUG(0,("failed to unmarshal RPC_AUTH_SCHANNEL_CHK.\n"));
2176 if (!schannel_decode(p
->auth
.a_u
.schannel_auth
,
2178 SENDER_IS_INITIATOR
,
2180 prs_data_p(rpc_in
)+RPC_HDR_REQ_LEN
, data_len
)) {
2181 DEBUG(3,("failed to decode PDU\n"));
2186 * Return the current pointer to the data offset.
2189 if(!prs_set_offset(rpc_in
, save_offset
)) {
2190 DEBUG(0,("failed to set offset back to %u\n",
2191 (unsigned int)save_offset
));
2195 /* The sequence number gets incremented on both send and receive. */
2196 p
->auth
.a_u
.schannel_auth
->seq_num
++;
2199 * Remember the padding length. We must remove it from the real data
2200 * stream once the sign/seal is done.
2203 *p_ss_padding_len
= auth_info
.auth_pad_len
;
2208 /****************************************************************************
2209 Find the set of RPC functions associated with this context_id
2210 ****************************************************************************/
2212 static PIPE_RPC_FNS
* find_pipe_fns_by_context( PIPE_RPC_FNS
*list
, uint32 context_id
)
2214 PIPE_RPC_FNS
*fns
= NULL
;
2217 DEBUG(0,("find_pipe_fns_by_context: ERROR! No context list for pipe!\n"));
2221 for (fns
=list
; fns
; fns
=fns
->next
) {
2222 if ( fns
->context_id
== context_id
)
2228 /****************************************************************************
2230 ****************************************************************************/
2232 void free_pipe_rpc_context( PIPE_RPC_FNS
*list
)
2234 PIPE_RPC_FNS
*tmp
= list
;
2246 static bool api_rpcTNP(pipes_struct
*p
,
2247 const struct api_struct
*api_rpc_cmds
, int n_cmds
);
2249 /****************************************************************************
2250 Find the correct RPC function to call for this request.
2251 If the pipe is authenticated then become the correct UNIX user
2252 before doing the call.
2253 ****************************************************************************/
2255 bool api_pipe_request(pipes_struct
*p
)
2258 bool changed_user
= False
;
2259 PIPE_RPC_FNS
*pipe_fns
;
2261 if (p
->pipe_bound
&&
2262 ((p
->auth
.auth_type
== PIPE_AUTH_TYPE_NTLMSSP
) ||
2263 (p
->auth
.auth_type
== PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
))) {
2264 if(!become_authenticated_pipe_user(p
)) {
2265 prs_mem_free(&p
->out_data
.rdata
);
2268 changed_user
= True
;
2271 DEBUG(5, ("Requested \\PIPE\\%s\n",
2272 get_pipe_name_from_iface(&p
->syntax
)));
2274 /* get the set of RPC functions for this context */
2276 pipe_fns
= find_pipe_fns_by_context(p
->contexts
, p
->hdr_req
.context_id
);
2279 TALLOC_CTX
*frame
= talloc_stackframe();
2280 ret
= api_rpcTNP(p
, pipe_fns
->cmds
, pipe_fns
->n_cmds
);
2284 DEBUG(0,("api_pipe_request: No rpc function table associated with context [%d] on pipe [%s]\n",
2285 p
->hdr_req
.context_id
,
2286 get_pipe_name_from_iface(&p
->syntax
)));
2290 unbecome_authenticated_pipe_user();
2296 /*******************************************************************
2297 Calls the underlying RPC function for a named pipe.
2298 ********************************************************************/
2300 static bool api_rpcTNP(pipes_struct
*p
,
2301 const struct api_struct
*api_rpc_cmds
, int n_cmds
)
2304 uint32 offset1
, offset2
;
2306 /* interpret the command */
2307 DEBUG(4,("api_rpcTNP: %s op 0x%x - ",
2308 get_pipe_name_from_iface(&p
->syntax
), p
->hdr_req
.opnum
));
2310 if (DEBUGLEVEL
>= 50) {
2312 slprintf(name
, sizeof(name
)-1, "in_%s",
2313 get_pipe_name_from_iface(&p
->syntax
));
2314 prs_dump(name
, p
->hdr_req
.opnum
, &p
->in_data
.data
);
2317 for (fn_num
= 0; fn_num
< n_cmds
; fn_num
++) {
2318 if (api_rpc_cmds
[fn_num
].opnum
== p
->hdr_req
.opnum
&& api_rpc_cmds
[fn_num
].fn
!= NULL
) {
2319 DEBUG(3,("api_rpcTNP: rpc command: %s\n", api_rpc_cmds
[fn_num
].name
));
2324 if (fn_num
== n_cmds
) {
2326 * For an unknown RPC just return a fault PDU but
2327 * return True to allow RPC's on the pipe to continue
2328 * and not put the pipe into fault state. JRA.
2330 DEBUG(4, ("unknown\n"));
2331 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
2335 offset1
= prs_offset(&p
->out_data
.rdata
);
2337 DEBUG(6, ("api_rpc_cmds[%d].fn == %p\n",
2338 fn_num
, api_rpc_cmds
[fn_num
].fn
));
2339 /* do the actual command */
2340 if(!api_rpc_cmds
[fn_num
].fn(p
)) {
2341 DEBUG(0,("api_rpcTNP: %s: %s failed.\n",
2342 get_pipe_name_from_iface(&p
->syntax
),
2343 api_rpc_cmds
[fn_num
].name
));
2344 prs_mem_free(&p
->out_data
.rdata
);
2348 if (p
->bad_handle_fault_state
) {
2349 DEBUG(4,("api_rpcTNP: bad handle fault return.\n"));
2350 p
->bad_handle_fault_state
= False
;
2351 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_CONTEXT_MISMATCH
));
2355 if (p
->rng_fault_state
) {
2356 DEBUG(4, ("api_rpcTNP: rng fault return\n"));
2357 p
->rng_fault_state
= False
;
2358 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
2362 offset2
= prs_offset(&p
->out_data
.rdata
);
2363 prs_set_offset(&p
->out_data
.rdata
, offset1
);
2364 if (DEBUGLEVEL
>= 50) {
2366 slprintf(name
, sizeof(name
)-1, "out_%s",
2367 get_pipe_name_from_iface(&p
->syntax
));
2368 prs_dump(name
, p
->hdr_req
.opnum
, &p
->out_data
.rdata
);
2370 prs_set_offset(&p
->out_data
.rdata
, offset2
);
2372 DEBUG(5,("api_rpcTNP: called %s successfully\n",
2373 get_pipe_name_from_iface(&p
->syntax
)));
2375 /* Check for buffer underflow in rpc parsing */
2377 if ((DEBUGLEVEL
>= 10) &&
2378 (prs_offset(&p
->in_data
.data
) != prs_data_size(&p
->in_data
.data
))) {
2379 size_t data_len
= prs_data_size(&p
->in_data
.data
) - prs_offset(&p
->in_data
.data
);
2380 char *data
= (char *)SMB_MALLOC(data_len
);
2382 DEBUG(10, ("api_rpcTNP: rpc input buffer underflow (parse error?)\n"));
2384 prs_uint8s(False
, "", &p
->in_data
.data
, 0, (unsigned char *)data
, (uint32
)data_len
);