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
;
66 RPC_HDR_AUTH auth_info
;
67 uint8 auth_type
, auth_level
;
68 AUTH_NTLMSSP_STATE
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
71 * If we're in the fault state, keep returning fault PDU's until
72 * the pipe gets closed. JRA.
76 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
80 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
82 /* Change the incoming request header to a response. */
83 p
->hdr
.pkt_type
= RPC_RESPONSE
;
85 /* Set up rpc header flags. */
86 if (p
->out_data
.data_sent_length
== 0) {
87 p
->hdr
.flags
= RPC_FLG_FIRST
;
93 * Work out how much we can fit in a single PDU.
96 data_len_left
= prs_offset(&p
->out_data
.rdata
) - p
->out_data
.data_sent_length
;
99 * Ensure there really is data left to send.
103 DEBUG(0,("create_next_pdu_ntlmssp: no data left to send !\n"));
107 data_space_available
= RPC_MAX_PDU_FRAG_LEN
- RPC_HEADER_LEN
108 - RPC_HDR_RESP_LEN
- RPC_HDR_AUTH_LEN
- NTLMSSP_SIG_SIZE
;
111 * The amount we send is the minimum of the available
112 * space and the amount left to send.
115 data_len
= MIN(data_len_left
, data_space_available
);
118 * Set up the alloc hint. This should be the data left to
122 hdr_resp
.alloc_hint
= data_len_left
;
125 * Work out if this PDU will be the last.
128 if(p
->out_data
.data_sent_length
+ data_len
>= prs_offset(&p
->out_data
.rdata
)) {
129 p
->hdr
.flags
|= RPC_FLG_LAST
;
130 if (data_len_left
% 8) {
131 ss_padding_len
= 8 - (data_len_left
% 8);
132 DEBUG(10,("create_next_pdu_ntlmssp: adding sign/seal padding of %u\n",
138 * Set up the header lengths.
141 p
->hdr
.frag_len
= RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+
142 data_len
+ ss_padding_len
+
143 RPC_HDR_AUTH_LEN
+ NTLMSSP_SIG_SIZE
;
144 p
->hdr
.auth_len
= NTLMSSP_SIG_SIZE
;
148 * Init the parse struct to point at the outgoing
152 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
154 /* Store the header in the data stream. */
155 if(!smb_io_rpc_hdr("hdr", &p
->hdr
, &p
->out_data
.frag
, 0)) {
156 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR.\n"));
157 prs_mem_free(&p
->out_data
.frag
);
161 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &p
->out_data
.frag
, 0)) {
162 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_RESP.\n"));
163 prs_mem_free(&p
->out_data
.frag
);
167 /* Copy the data into the PDU. */
169 if(!prs_append_some_prs_data(&p
->out_data
.frag
, &p
->out_data
.rdata
,
170 p
->out_data
.data_sent_length
, data_len
)) {
171 DEBUG(0,("create_next_pdu_ntlmssp: failed to copy %u bytes of data.\n", (unsigned int)data_len
));
172 prs_mem_free(&p
->out_data
.frag
);
176 /* Copy the sign/seal padding data. */
177 if (ss_padding_len
) {
180 memset(pad
, '\0', 8);
181 if (!prs_copy_data_in(&p
->out_data
.frag
, pad
,
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(&p
->out_data
.frag
);
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
, &p
->out_data
.frag
,
206 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_AUTH.\n"));
207 prs_mem_free(&p
->out_data
.frag
);
211 /* Generate the sign blob. */
213 switch (p
->auth
.auth_level
) {
214 case PIPE_AUTH_LEVEL_PRIVACY
:
215 /* Data portion is encrypted. */
216 status
= ntlmssp_seal_packet(
218 (uint8_t *)prs_data_p(&p
->out_data
.frag
)
219 + RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
,
220 data_len
+ ss_padding_len
,
221 (unsigned char *)prs_data_p(&p
->out_data
.frag
),
222 (size_t)prs_offset(&p
->out_data
.frag
),
224 if (!NT_STATUS_IS_OK(status
)) {
225 data_blob_free(&auth_blob
);
226 prs_mem_free(&p
->out_data
.frag
);
230 case PIPE_AUTH_LEVEL_INTEGRITY
:
231 /* Data is signed. */
232 status
= ntlmssp_sign_packet(
234 (unsigned char *)prs_data_p(&p
->out_data
.frag
)
235 + RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
,
236 data_len
+ ss_padding_len
,
237 (unsigned char *)prs_data_p(&p
->out_data
.frag
),
238 (size_t)prs_offset(&p
->out_data
.frag
),
240 if (!NT_STATUS_IS_OK(status
)) {
241 data_blob_free(&auth_blob
);
242 prs_mem_free(&p
->out_data
.frag
);
247 prs_mem_free(&p
->out_data
.frag
);
251 /* Append the auth blob. */
252 if (!prs_copy_data_in(&p
->out_data
.frag
, (char *)auth_blob
.data
,
254 DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes auth blob.\n",
255 (unsigned int)NTLMSSP_SIG_SIZE
));
256 data_blob_free(&auth_blob
);
257 prs_mem_free(&p
->out_data
.frag
);
261 data_blob_free(&auth_blob
);
264 * Setup the counts for this PDU.
267 p
->out_data
.data_sent_length
+= data_len
;
268 p
->out_data
.current_pdu_sent
= 0;
273 /*******************************************************************
274 Generate the next PDU to be returned from the data in p->rdata.
275 Return an schannel authenticated fragment.
276 ********************************************************************/
278 static bool create_next_pdu_schannel(pipes_struct
*p
)
280 RPC_HDR_RESP hdr_resp
;
281 uint32 ss_padding_len
= 0;
283 uint32 data_space_available
;
284 uint32 data_len_left
;
288 * If we're in the fault state, keep returning fault PDU's until
289 * the pipe gets closed. JRA.
293 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
297 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
299 /* Change the incoming request header to a response. */
300 p
->hdr
.pkt_type
= RPC_RESPONSE
;
302 /* Set up rpc header flags. */
303 if (p
->out_data
.data_sent_length
== 0) {
304 p
->hdr
.flags
= RPC_FLG_FIRST
;
310 * Work out how much we can fit in a single PDU.
313 data_len_left
= prs_offset(&p
->out_data
.rdata
) - p
->out_data
.data_sent_length
;
316 * Ensure there really is data left to send.
320 DEBUG(0,("create_next_pdu_schannel: no data left to send !\n"));
324 data_space_available
= RPC_MAX_PDU_FRAG_LEN
- RPC_HEADER_LEN
325 - RPC_HDR_RESP_LEN
- RPC_HDR_AUTH_LEN
326 - RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
;
329 * The amount we send is the minimum of the available
330 * space and the amount left to send.
333 data_len
= MIN(data_len_left
, data_space_available
);
336 * Set up the alloc hint. This should be the data left to
340 hdr_resp
.alloc_hint
= data_len_left
;
343 * Work out if this PDU will be the last.
346 if(p
->out_data
.data_sent_length
+ data_len
>= prs_offset(&p
->out_data
.rdata
)) {
347 p
->hdr
.flags
|= RPC_FLG_LAST
;
348 if (data_len_left
% 8) {
349 ss_padding_len
= 8 - (data_len_left
% 8);
350 DEBUG(10,("create_next_pdu_schannel: adding sign/seal padding of %u\n",
355 p
->hdr
.frag_len
= RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+ data_len
+ ss_padding_len
+
356 RPC_HDR_AUTH_LEN
+ RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
;
357 p
->hdr
.auth_len
= RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
;
360 * Init the parse struct to point at the outgoing
364 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
366 /* Store the header in the data stream. */
367 if(!smb_io_rpc_hdr("hdr", &p
->hdr
, &p
->out_data
.frag
, 0)) {
368 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR.\n"));
369 prs_mem_free(&p
->out_data
.frag
);
373 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &p
->out_data
.frag
, 0)) {
374 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_RESP.\n"));
375 prs_mem_free(&p
->out_data
.frag
);
379 /* Store the current offset. */
380 data_pos
= prs_offset(&p
->out_data
.frag
);
382 /* Copy the data into the PDU. */
384 if(!prs_append_some_prs_data(&p
->out_data
.frag
, &p
->out_data
.rdata
,
385 p
->out_data
.data_sent_length
, data_len
)) {
386 DEBUG(0,("create_next_pdu_schannel: failed to copy %u bytes of data.\n", (unsigned int)data_len
));
387 prs_mem_free(&p
->out_data
.frag
);
391 /* Copy the sign/seal padding data. */
392 if (ss_padding_len
) {
394 memset(pad
, '\0', 8);
395 if (!prs_copy_data_in(&p
->out_data
.frag
, pad
,
397 DEBUG(0,("create_next_pdu_schannel: failed to add %u bytes of pad data.\n", (unsigned int)ss_padding_len
));
398 prs_mem_free(&p
->out_data
.frag
);
405 * Schannel processing.
407 RPC_HDR_AUTH auth_info
;
408 RPC_AUTH_SCHANNEL_CHK verf
;
410 /* Check it's the type of reply we were expecting to decode */
412 init_rpc_hdr_auth(&auth_info
,
413 RPC_SCHANNEL_AUTH_TYPE
,
414 p
->auth
.auth_level
== PIPE_AUTH_LEVEL_PRIVACY
?
415 RPC_AUTH_LEVEL_PRIVACY
: RPC_AUTH_LEVEL_INTEGRITY
,
418 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
,
419 &p
->out_data
.frag
, 0)) {
420 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_AUTH.\n"));
421 prs_mem_free(&p
->out_data
.frag
);
425 schannel_encode(p
->auth
.a_u
.schannel_auth
,
426 p
->auth
.auth_level
, SENDER_IS_ACCEPTOR
, &verf
,
427 prs_data_p(&p
->out_data
.frag
) + data_pos
,
428 data_len
+ ss_padding_len
);
430 if (!smb_io_rpc_auth_schannel_chk("", RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
,
431 &verf
, &p
->out_data
.frag
, 0)) {
432 prs_mem_free(&p
->out_data
.frag
);
436 p
->auth
.a_u
.schannel_auth
->seq_num
++;
440 * Setup the counts for this PDU.
443 p
->out_data
.data_sent_length
+= data_len
;
444 p
->out_data
.current_pdu_sent
= 0;
449 /*******************************************************************
450 Generate the next PDU to be returned from the data in p->rdata.
451 No authentication done.
452 ********************************************************************/
454 static bool create_next_pdu_noauth(pipes_struct
*p
)
456 RPC_HDR_RESP hdr_resp
;
458 uint32 data_space_available
;
459 uint32 data_len_left
;
462 * If we're in the fault state, keep returning fault PDU's until
463 * the pipe gets closed. JRA.
467 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
471 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
473 /* Change the incoming request header to a response. */
474 p
->hdr
.pkt_type
= RPC_RESPONSE
;
476 /* Set up rpc header flags. */
477 if (p
->out_data
.data_sent_length
== 0) {
478 p
->hdr
.flags
= RPC_FLG_FIRST
;
484 * Work out how much we can fit in a single PDU.
487 data_len_left
= prs_offset(&p
->out_data
.rdata
) - p
->out_data
.data_sent_length
;
490 * Ensure there really is data left to send.
494 DEBUG(0,("create_next_pdu_noath: no data left to send !\n"));
498 data_space_available
= RPC_MAX_PDU_FRAG_LEN
- RPC_HEADER_LEN
502 * The amount we send is the minimum of the available
503 * space and the amount left to send.
506 data_len
= MIN(data_len_left
, data_space_available
);
509 * Set up the alloc hint. This should be the data left to
513 hdr_resp
.alloc_hint
= data_len_left
;
516 * Work out if this PDU will be the last.
519 if(p
->out_data
.data_sent_length
+ data_len
>= prs_offset(&p
->out_data
.rdata
)) {
520 p
->hdr
.flags
|= RPC_FLG_LAST
;
524 * Set up the header lengths.
527 p
->hdr
.frag_len
= RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+ data_len
;
531 * Init the parse struct to point at the outgoing
535 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
537 /* Store the header in the data stream. */
538 if(!smb_io_rpc_hdr("hdr", &p
->hdr
, &p
->out_data
.frag
, 0)) {
539 DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR.\n"));
540 prs_mem_free(&p
->out_data
.frag
);
544 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &p
->out_data
.frag
, 0)) {
545 DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR_RESP.\n"));
546 prs_mem_free(&p
->out_data
.frag
);
550 /* Copy the data into the PDU. */
552 if(!prs_append_some_prs_data(&p
->out_data
.frag
, &p
->out_data
.rdata
,
553 p
->out_data
.data_sent_length
, data_len
)) {
554 DEBUG(0,("create_next_pdu_noauth: failed to copy %u bytes of data.\n", (unsigned int)data_len
));
555 prs_mem_free(&p
->out_data
.frag
);
560 * Setup the counts for this PDU.
563 p
->out_data
.data_sent_length
+= data_len
;
564 p
->out_data
.current_pdu_sent
= 0;
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
)
784 /* Free any memory in the current return data buffer. */
785 prs_mem_free(&p
->out_data
.rdata
);
788 * Marshall directly into the outgoing PDU space. We
789 * must do this as we need to set to the bind response
790 * header and are never sending more than one PDU here.
793 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
796 * Initialize a bind_nak header.
799 init_rpc_hdr(&nak_hdr
, RPC_BINDNACK
, RPC_FLG_FIRST
| RPC_FLG_LAST
,
800 p
->hdr
.call_id
, RPC_HEADER_LEN
+ sizeof(uint16
), 0);
803 * Marshall the header into the outgoing PDU.
806 if(!smb_io_rpc_hdr("", &nak_hdr
, &p
->out_data
.frag
, 0)) {
807 DEBUG(0,("setup_bind_nak: marshalling of RPC_HDR failed.\n"));
808 prs_mem_free(&p
->out_data
.frag
);
813 * Now add the reject reason.
816 if(!prs_uint16("reject code", &p
->out_data
.frag
, 0, &zero
)) {
817 prs_mem_free(&p
->out_data
.frag
);
821 p
->out_data
.data_sent_length
= 0;
822 p
->out_data
.current_pdu_sent
= 0;
824 if (p
->auth
.auth_data_free_func
) {
825 (*p
->auth
.auth_data_free_func
)(&p
->auth
);
827 p
->auth
.auth_level
= PIPE_AUTH_LEVEL_NONE
;
828 p
->auth
.auth_type
= PIPE_AUTH_TYPE_NONE
;
829 p
->pipe_bound
= False
;
834 /*******************************************************************
835 Marshall a fault pdu.
836 *******************************************************************/
838 bool setup_fault_pdu(pipes_struct
*p
, NTSTATUS status
)
841 RPC_HDR_RESP hdr_resp
;
842 RPC_HDR_FAULT fault_resp
;
844 /* Free any memory in the current return data buffer. */
845 prs_mem_free(&p
->out_data
.rdata
);
848 * Marshall directly into the outgoing PDU space. We
849 * must do this as we need to set to the bind response
850 * header and are never sending more than one PDU here.
853 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
856 * Initialize a fault header.
859 init_rpc_hdr(&fault_hdr
, RPC_FAULT
, RPC_FLG_FIRST
| RPC_FLG_LAST
| RPC_FLG_NOCALL
,
860 p
->hdr
.call_id
, RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+ RPC_HDR_FAULT_LEN
, 0);
863 * Initialize the HDR_RESP and FAULT parts of the PDU.
866 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
868 fault_resp
.status
= status
;
869 fault_resp
.reserved
= 0;
872 * Marshall the header into the outgoing PDU.
875 if(!smb_io_rpc_hdr("", &fault_hdr
, &p
->out_data
.frag
, 0)) {
876 DEBUG(0,("setup_fault_pdu: marshalling of RPC_HDR failed.\n"));
877 prs_mem_free(&p
->out_data
.frag
);
881 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &p
->out_data
.frag
, 0)) {
882 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_RESP.\n"));
883 prs_mem_free(&p
->out_data
.frag
);
887 if(!smb_io_rpc_hdr_fault("fault", &fault_resp
, &p
->out_data
.frag
, 0)) {
888 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_FAULT.\n"));
889 prs_mem_free(&p
->out_data
.frag
);
893 p
->out_data
.data_sent_length
= 0;
894 p
->out_data
.current_pdu_sent
= 0;
900 /*******************************************************************
901 Marshall a cancel_ack pdu.
902 We should probably check the auth-verifier here.
903 *******************************************************************/
905 bool setup_cancel_ack_reply(pipes_struct
*p
, prs_struct
*rpc_in_p
)
907 prs_struct outgoing_pdu
;
908 RPC_HDR ack_reply_hdr
;
910 /* Free any memory in the current return data buffer. */
911 prs_mem_free(&p
->out_data
.rdata
);
914 * Marshall directly into the outgoing PDU space. We
915 * must do this as we need to set to the bind response
916 * header and are never sending more than one PDU here.
919 prs_init_empty( &outgoing_pdu
, p
->mem_ctx
, MARSHALL
);
920 prs_give_memory( &outgoing_pdu
, (char *)p
->out_data
.current_pdu
, sizeof(p
->out_data
.current_pdu
), False
);
923 * Initialize a cancel_ack header.
926 init_rpc_hdr(&ack_reply_hdr
, RPC_CANCEL_ACK
, RPC_FLG_FIRST
| RPC_FLG_LAST
,
927 p
->hdr
.call_id
, RPC_HEADER_LEN
, 0);
930 * Marshall the header into the outgoing PDU.
933 if(!smb_io_rpc_hdr("", &ack_reply_hdr
, &outgoing_pdu
, 0)) {
934 DEBUG(0,("setup_cancel_ack_reply: marshalling of RPC_HDR failed.\n"));
935 prs_mem_free(&outgoing_pdu
);
939 p
->out_data
.data_sent_length
= 0;
940 p
->out_data
.current_pdu_len
= prs_offset(&outgoing_pdu
);
941 p
->out_data
.current_pdu_sent
= 0;
943 prs_mem_free(&outgoing_pdu
);
948 /*******************************************************************
949 Ensure a bind request has the correct abstract & transfer interface.
950 Used to reject unknown binds from Win2k.
951 *******************************************************************/
953 bool check_bind_req(struct pipes_struct
*p
, RPC_IFACE
* abstract
,
954 RPC_IFACE
* transfer
, uint32 context_id
)
957 struct pipe_rpc_fns
*context_fns
;
959 DEBUG(3,("check_bind_req for %s\n",
960 get_pipe_name_from_iface(&p
->syntax
)));
962 /* we have to check all now since win2k introduced a new UUID on the lsaprpc pipe */
964 for (i
=0; i
<rpc_lookup_size
; i
++) {
965 DEBUGADD(10, ("checking %s\n", rpc_lookup
[i
].pipe
.clnt
));
966 if (ndr_syntax_id_equal(
967 abstract
, &rpc_lookup
[i
].rpc_interface
)
968 && ndr_syntax_id_equal(
969 transfer
, &ndr_transfer_syntax
)) {
974 if (i
== rpc_lookup_size
) {
978 context_fns
= SMB_MALLOC_P(struct pipe_rpc_fns
);
979 if (context_fns
== NULL
) {
980 DEBUG(0,("check_bind_req: malloc() failed!\n"));
984 context_fns
->cmds
= rpc_lookup
[i
].cmds
;
985 context_fns
->n_cmds
= rpc_lookup
[i
].n_cmds
;
986 context_fns
->context_id
= context_id
;
988 /* add to the list of open contexts */
990 DLIST_ADD( p
->contexts
, context_fns
);
995 /*******************************************************************
996 Register commands to an RPC pipe
997 *******************************************************************/
999 NTSTATUS
rpc_srv_register(int version
, const char *clnt
, const char *srv
,
1000 const struct ndr_interface_table
*iface
,
1001 const struct api_struct
*cmds
, int size
)
1003 struct rpc_table
*rpc_entry
;
1005 if (!clnt
|| !srv
|| !cmds
) {
1006 return NT_STATUS_INVALID_PARAMETER
;
1009 if (version
!= SMB_RPC_INTERFACE_VERSION
) {
1010 DEBUG(0,("Can't register rpc commands!\n"
1011 "You tried to register a rpc module with SMB_RPC_INTERFACE_VERSION %d"
1012 ", while this version of samba uses version %d!\n",
1013 version
,SMB_RPC_INTERFACE_VERSION
));
1014 return NT_STATUS_OBJECT_TYPE_MISMATCH
;
1019 * we still need to make sure that don't register the same commands twice!!!
1024 /* We use a temporary variable because this call can fail and
1025 rpc_lookup will still be valid afterwards. It could then succeed if
1026 called again later */
1028 rpc_entry
= SMB_REALLOC_ARRAY_KEEP_OLD_ON_ERROR(rpc_lookup
, struct rpc_table
, rpc_lookup_size
);
1029 if (NULL
== rpc_entry
) {
1031 DEBUG(0, ("rpc_pipe_register_commands: memory allocation failed\n"));
1032 return NT_STATUS_NO_MEMORY
;
1034 rpc_lookup
= rpc_entry
;
1037 rpc_entry
= rpc_lookup
+ (rpc_lookup_size
- 1);
1038 ZERO_STRUCTP(rpc_entry
);
1039 rpc_entry
->pipe
.clnt
= SMB_STRDUP(clnt
);
1040 rpc_entry
->pipe
.srv
= SMB_STRDUP(srv
);
1041 rpc_entry
->rpc_interface
= iface
->syntax_id
;
1042 rpc_entry
->cmds
= cmds
;
1043 rpc_entry
->n_cmds
= size
;
1045 return NT_STATUS_OK
;
1049 * Is a named pipe known?
1050 * @param[in] cli_filename The pipe name requested by the client
1051 * @result Do we want to serve this?
1053 bool is_known_pipename(const char *cli_filename
, struct ndr_syntax_id
*syntax
)
1055 const char *pipename
= cli_filename
;
1058 if (strnequal(pipename
, "\\PIPE\\", 6)) {
1062 if (*pipename
== '\\') {
1066 if (lp_disable_spoolss() && strequal(pipename
, "spoolss")) {
1067 DEBUG(10, ("refusing spoolss access\n"));
1071 for (i
=0; i
<rpc_lookup_size
; i
++) {
1072 if (strequal(pipename
, rpc_lookup
[i
].pipe
.clnt
)) {
1073 *syntax
= rpc_lookup
[i
].rpc_interface
;
1078 DEBUG(10, ("is_known_pipename: %s unknown\n", cli_filename
));
1082 /*******************************************************************
1083 Handle a SPNEGO krb5 bind auth.
1084 *******************************************************************/
1086 static bool pipe_spnego_auth_bind_kerberos(pipes_struct
*p
, prs_struct
*rpc_in_p
, RPC_HDR_AUTH
*pauth_info
,
1087 DATA_BLOB
*psecblob
, prs_struct
*pout_auth
)
1092 /*******************************************************************
1093 Handle the first part of a SPNEGO bind auth.
1094 *******************************************************************/
1096 static bool pipe_spnego_auth_bind_negotiate(pipes_struct
*p
, prs_struct
*rpc_in_p
,
1097 RPC_HDR_AUTH
*pauth_info
, prs_struct
*pout_auth
)
1103 char *OIDs
[ASN1_MAX_OIDS
];
1106 bool got_kerberos_mechanism
= false;
1107 AUTH_NTLMSSP_STATE
*a
= NULL
;
1108 RPC_HDR_AUTH auth_info
;
1110 ZERO_STRUCT(secblob
);
1112 ZERO_STRUCT(response
);
1114 /* Grab the SPNEGO blob. */
1115 blob
= data_blob(NULL
,p
->hdr
.auth_len
);
1117 if (!prs_copy_data_out((char *)blob
.data
, rpc_in_p
, p
->hdr
.auth_len
)) {
1118 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to pull %u bytes - the SPNEGO auth header.\n",
1119 (unsigned int)p
->hdr
.auth_len
));
1123 if (blob
.data
[0] != ASN1_APPLICATION(0)) {
1127 /* parse out the OIDs and the first sec blob */
1128 if (!parse_negTokenTarg(blob
, OIDs
, &secblob
)) {
1129 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to parse the security blob.\n"));
1133 if (strcmp(OID_KERBEROS5
, OIDs
[0]) == 0 || strcmp(OID_KERBEROS5_OLD
, OIDs
[0]) == 0) {
1134 got_kerberos_mechanism
= true;
1137 for (i
=0;OIDs
[i
];i
++) {
1138 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got OID %s\n", OIDs
[i
]));
1139 TALLOC_FREE(OIDs
[i
]);
1141 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got secblob of size %lu\n", (unsigned long)secblob
.length
));
1143 if ( got_kerberos_mechanism
&& ((lp_security()==SEC_ADS
) || USE_KERBEROS_KEYTAB
) ) {
1144 bool ret
= pipe_spnego_auth_bind_kerberos(p
, rpc_in_p
, pauth_info
, &secblob
, pout_auth
);
1145 data_blob_free(&secblob
);
1146 data_blob_free(&blob
);
1150 if (p
->auth
.auth_type
== PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
&& p
->auth
.a_u
.auth_ntlmssp_state
) {
1151 /* Free any previous auth type. */
1152 free_pipe_ntlmssp_auth_data(&p
->auth
);
1155 if (!got_kerberos_mechanism
) {
1156 /* Initialize the NTLM engine. */
1157 status
= auth_ntlmssp_start(&a
);
1158 if (!NT_STATUS_IS_OK(status
)) {
1163 * Pass the first security blob of data to it.
1164 * This can return an error or NT_STATUS_MORE_PROCESSING_REQUIRED
1165 * which means we need another packet to complete the bind.
1168 status
= auth_ntlmssp_update(a
, secblob
, &chal
);
1170 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
1171 DEBUG(3,("pipe_spnego_auth_bind_negotiate: auth_ntlmssp_update failed.\n"));
1175 /* Generate the response blob we need for step 2 of the bind. */
1176 response
= spnego_gen_auth_response(&chal
, status
, OID_NTLMSSP
);
1179 * SPNEGO negotiate down to NTLMSSP. The subsequent
1180 * code to process follow-up packets is not complete
1183 response
= spnego_gen_auth_response(NULL
,
1184 NT_STATUS_MORE_PROCESSING_REQUIRED
,
1188 /* Copy the blob into the pout_auth parse struct */
1189 init_rpc_hdr_auth(&auth_info
, RPC_SPNEGO_AUTH_TYPE
, pauth_info
->auth_level
, RPC_HDR_AUTH_LEN
, 1);
1190 if(!smb_io_rpc_hdr_auth("", &auth_info
, pout_auth
, 0)) {
1191 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of RPC_HDR_AUTH failed.\n"));
1195 if (!prs_copy_data_in(pout_auth
, (char *)response
.data
, response
.length
)) {
1196 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of data blob failed.\n"));
1200 p
->auth
.a_u
.auth_ntlmssp_state
= a
;
1201 p
->auth
.auth_data_free_func
= &free_pipe_ntlmssp_auth_data
;
1202 p
->auth
.auth_type
= PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
;
1204 data_blob_free(&blob
);
1205 data_blob_free(&secblob
);
1206 data_blob_free(&chal
);
1207 data_blob_free(&response
);
1209 /* We can't set pipe_bound True yet - we need an RPC_ALTER_CONTEXT response packet... */
1214 data_blob_free(&blob
);
1215 data_blob_free(&secblob
);
1216 data_blob_free(&chal
);
1217 data_blob_free(&response
);
1219 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
1224 /*******************************************************************
1225 Handle the second part of a SPNEGO bind auth.
1226 *******************************************************************/
1228 static bool pipe_spnego_auth_bind_continue(pipes_struct
*p
, prs_struct
*rpc_in_p
,
1229 RPC_HDR_AUTH
*pauth_info
, prs_struct
*pout_auth
)
1231 RPC_HDR_AUTH auth_info
;
1232 DATA_BLOB spnego_blob
;
1233 DATA_BLOB auth_blob
;
1234 DATA_BLOB auth_reply
;
1236 AUTH_NTLMSSP_STATE
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
1238 ZERO_STRUCT(spnego_blob
);
1239 ZERO_STRUCT(auth_blob
);
1240 ZERO_STRUCT(auth_reply
);
1241 ZERO_STRUCT(response
);
1244 * NB. If we've negotiated down from krb5 to NTLMSSP we'll currently
1245 * fail here as 'a' == NULL.
1247 if (p
->auth
.auth_type
!= PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
|| !a
) {
1248 DEBUG(0,("pipe_spnego_auth_bind_continue: not in NTLMSSP auth state.\n"));
1252 /* Grab the SPNEGO blob. */
1253 spnego_blob
= data_blob(NULL
,p
->hdr
.auth_len
);
1255 if (!prs_copy_data_out((char *)spnego_blob
.data
, rpc_in_p
, p
->hdr
.auth_len
)) {
1256 DEBUG(0,("pipe_spnego_auth_bind_continue: Failed to pull %u bytes - the SPNEGO auth header.\n",
1257 (unsigned int)p
->hdr
.auth_len
));
1261 if (spnego_blob
.data
[0] != ASN1_CONTEXT(1)) {
1262 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob type.\n"));
1266 if (!spnego_parse_auth(spnego_blob
, &auth_blob
)) {
1267 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob.\n"));
1272 * The following call actually checks the challenge/response data.
1273 * for correctness against the given DOMAIN\user name.
1276 if (!pipe_ntlmssp_verify_final(p
, &auth_blob
)) {
1280 data_blob_free(&spnego_blob
);
1281 data_blob_free(&auth_blob
);
1283 /* Generate the spnego "accept completed" blob - no incoming data. */
1284 response
= spnego_gen_auth_response(&auth_reply
, NT_STATUS_OK
, OID_NTLMSSP
);
1286 /* Copy the blob into the pout_auth parse struct */
1287 init_rpc_hdr_auth(&auth_info
, RPC_SPNEGO_AUTH_TYPE
, pauth_info
->auth_level
, RPC_HDR_AUTH_LEN
, 1);
1288 if(!smb_io_rpc_hdr_auth("", &auth_info
, pout_auth
, 0)) {
1289 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of RPC_HDR_AUTH failed.\n"));
1293 if (!prs_copy_data_in(pout_auth
, (char *)response
.data
, response
.length
)) {
1294 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of data blob failed.\n"));
1298 data_blob_free(&auth_reply
);
1299 data_blob_free(&response
);
1301 p
->pipe_bound
= True
;
1307 data_blob_free(&spnego_blob
);
1308 data_blob_free(&auth_blob
);
1309 data_blob_free(&auth_reply
);
1310 data_blob_free(&response
);
1312 free_pipe_ntlmssp_auth_data(&p
->auth
);
1313 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
1318 /*******************************************************************
1319 Handle an schannel bind auth.
1320 *******************************************************************/
1322 static bool pipe_schannel_auth_bind(pipes_struct
*p
, prs_struct
*rpc_in_p
,
1323 RPC_HDR_AUTH
*pauth_info
, prs_struct
*pout_auth
)
1325 RPC_HDR_AUTH auth_info
;
1326 RPC_AUTH_SCHANNEL_NEG neg
;
1327 RPC_AUTH_VERIFIER auth_verifier
;
1329 struct dcinfo
*pdcinfo
;
1331 DATA_BLOB session_key
;
1333 if (!smb_io_rpc_auth_schannel_neg("", &neg
, rpc_in_p
, 0)) {
1334 DEBUG(0,("pipe_schannel_auth_bind: Could not unmarshal SCHANNEL auth neg\n"));
1339 * The neg.myname key here must match the remote computer name
1340 * given in the DOM_CLNT_SRV.uni_comp_name used on all netlogon pipe
1341 * operations that use credentials.
1345 ret
= secrets_restore_schannel_session_info(p
->mem_ctx
, neg
.myname
, &pdcinfo
);
1349 DEBUG(0, ("pipe_schannel_auth_bind: Attempt to bind using schannel without successful serverauth2\n"));
1353 p
->auth
.a_u
.schannel_auth
= talloc(p
, struct schannel_auth_struct
);
1354 if (!p
->auth
.a_u
.schannel_auth
) {
1355 TALLOC_FREE(pdcinfo
);
1359 memset(p
->auth
.a_u
.schannel_auth
->sess_key
, 0, sizeof(p
->auth
.a_u
.schannel_auth
->sess_key
));
1360 memcpy(p
->auth
.a_u
.schannel_auth
->sess_key
, pdcinfo
->sess_key
,
1361 sizeof(pdcinfo
->sess_key
));
1363 TALLOC_FREE(pdcinfo
);
1365 p
->auth
.a_u
.schannel_auth
->seq_num
= 0;
1368 * JRA. Should we also copy the schannel session key into the pipe session key p->session_key
1369 * here ? We do that for NTLMSSP, but the session key is already set up from the vuser
1370 * struct of the person who opened the pipe. I need to test this further. JRA.
1372 * VL. As we are mapping this to guest set the generic key
1373 * "SystemLibraryDTC" key here. It's a bit difficult to test against
1374 * W2k3, as it does not allow schannel binds against SAMR and LSA
1378 session_key
= generic_session_key();
1379 if (session_key
.data
== NULL
) {
1380 DEBUG(0, ("pipe_schannel_auth_bind: Could not alloc session"
1385 ret
= server_info_set_session_key(p
->server_info
, session_key
);
1387 data_blob_free(&session_key
);
1390 DEBUG(0, ("server_info_set_session_key failed\n"));
1394 init_rpc_hdr_auth(&auth_info
, RPC_SCHANNEL_AUTH_TYPE
, pauth_info
->auth_level
, RPC_HDR_AUTH_LEN
, 1);
1395 if(!smb_io_rpc_hdr_auth("", &auth_info
, pout_auth
, 0)) {
1396 DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1400 /*** SCHANNEL verifier ***/
1402 init_rpc_auth_verifier(&auth_verifier
, "\001", 0x0);
1403 if(!smb_io_rpc_schannel_verifier("", &auth_verifier
, pout_auth
, 0)) {
1404 DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_AUTH_VERIFIER failed.\n"));
1408 prs_align(pout_auth
);
1411 if(!prs_uint32("flags ", pout_auth
, 0, &flags
)) {
1415 DEBUG(10,("pipe_schannel_auth_bind: schannel auth: domain [%s] myname [%s]\n",
1416 neg
.domain
, neg
.myname
));
1418 /* We're finished with this bind - no more packets. */
1419 p
->auth
.auth_data_free_func
= NULL
;
1420 p
->auth
.auth_type
= PIPE_AUTH_TYPE_SCHANNEL
;
1422 p
->pipe_bound
= True
;
1427 /*******************************************************************
1428 Handle an NTLMSSP bind auth.
1429 *******************************************************************/
1431 static bool pipe_ntlmssp_auth_bind(pipes_struct
*p
, prs_struct
*rpc_in_p
,
1432 RPC_HDR_AUTH
*pauth_info
, prs_struct
*pout_auth
)
1434 RPC_HDR_AUTH auth_info
;
1438 AUTH_NTLMSSP_STATE
*a
= NULL
;
1441 ZERO_STRUCT(response
);
1443 /* Grab the NTLMSSP blob. */
1444 blob
= data_blob(NULL
,p
->hdr
.auth_len
);
1446 if (!prs_copy_data_out((char *)blob
.data
, rpc_in_p
, p
->hdr
.auth_len
)) {
1447 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to pull %u bytes - the NTLM auth header.\n",
1448 (unsigned int)p
->hdr
.auth_len
));
1452 if (strncmp((char *)blob
.data
, "NTLMSSP", 7) != 0) {
1453 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to read NTLMSSP in blob\n"));
1457 /* We have an NTLMSSP blob. */
1458 status
= auth_ntlmssp_start(&a
);
1459 if (!NT_STATUS_IS_OK(status
)) {
1460 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_start failed: %s\n",
1461 nt_errstr(status
) ));
1465 status
= auth_ntlmssp_update(a
, blob
, &response
);
1466 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
1467 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_update failed: %s\n",
1468 nt_errstr(status
) ));
1472 data_blob_free(&blob
);
1474 /* Copy the blob into the pout_auth parse struct */
1475 init_rpc_hdr_auth(&auth_info
, RPC_NTLMSSP_AUTH_TYPE
, pauth_info
->auth_level
, RPC_HDR_AUTH_LEN
, 1);
1476 if(!smb_io_rpc_hdr_auth("", &auth_info
, pout_auth
, 0)) {
1477 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1481 if (!prs_copy_data_in(pout_auth
, (char *)response
.data
, response
.length
)) {
1482 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of data blob failed.\n"));
1486 p
->auth
.a_u
.auth_ntlmssp_state
= a
;
1487 p
->auth
.auth_data_free_func
= &free_pipe_ntlmssp_auth_data
;
1488 p
->auth
.auth_type
= PIPE_AUTH_TYPE_NTLMSSP
;
1490 data_blob_free(&blob
);
1491 data_blob_free(&response
);
1493 DEBUG(10,("pipe_ntlmssp_auth_bind: NTLMSSP auth started\n"));
1495 /* We can't set pipe_bound True yet - we need an RPC_AUTH3 response packet... */
1500 data_blob_free(&blob
);
1501 data_blob_free(&response
);
1503 free_pipe_ntlmssp_auth_data(&p
->auth
);
1504 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
1508 /*******************************************************************
1509 Respond to a pipe bind request.
1510 *******************************************************************/
1512 bool api_pipe_bind_req(pipes_struct
*p
, prs_struct
*rpc_in_p
)
1516 RPC_HDR_AUTH auth_info
;
1518 fstring ack_pipe_name
;
1519 prs_struct out_hdr_ba
;
1520 prs_struct out_auth
;
1523 unsigned int auth_type
= RPC_ANONYMOUS_AUTH_TYPE
;
1525 /* No rebinds on a bound pipe - use alter context. */
1526 if (p
->pipe_bound
) {
1527 DEBUG(2,("api_pipe_bind_req: rejecting bind request on bound "
1528 "pipe %s.\n", get_pipe_name_from_iface(&p
->syntax
)));
1529 return setup_bind_nak(p
);
1532 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
1535 * Marshall directly into the outgoing PDU space. We
1536 * must do this as we need to set to the bind response
1537 * header and are never sending more than one PDU here.
1541 * Setup the memory to marshall the ba header, and the
1545 if(!prs_init(&out_hdr_ba
, 1024, p
->mem_ctx
, MARSHALL
)) {
1546 DEBUG(0,("api_pipe_bind_req: malloc out_hdr_ba failed.\n"));
1547 prs_mem_free(&p
->out_data
.frag
);
1551 if(!prs_init(&out_auth
, 1024, p
->mem_ctx
, MARSHALL
)) {
1552 DEBUG(0,("api_pipe_bind_req: malloc out_auth failed.\n"));
1553 prs_mem_free(&p
->out_data
.frag
);
1554 prs_mem_free(&out_hdr_ba
);
1558 DEBUG(5,("api_pipe_bind_req: decode request. %d\n", __LINE__
));
1560 ZERO_STRUCT(hdr_rb
);
1562 /* decode the bind request */
1564 if(!smb_io_rpc_hdr_rb("", &hdr_rb
, rpc_in_p
, 0)) {
1565 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_RB "
1570 if (hdr_rb
.num_contexts
== 0) {
1571 DEBUG(0, ("api_pipe_bind_req: no rpc contexts around\n"));
1576 * Try and find the correct pipe name to ensure
1577 * that this is a pipe name we support.
1580 for (i
= 0; i
< rpc_lookup_size
; i
++) {
1581 if (ndr_syntax_id_equal(&rpc_lookup
[i
].rpc_interface
,
1582 &hdr_rb
.rpc_context
[0].abstract
)) {
1583 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1584 rpc_lookup
[i
].pipe
.clnt
, rpc_lookup
[i
].pipe
.srv
));
1589 if (i
== rpc_lookup_size
) {
1592 status
= smb_probe_module(
1593 "rpc", get_pipe_name_from_iface(
1594 &hdr_rb
.rpc_context
[0].abstract
));
1596 if (NT_STATUS_IS_ERR(status
)) {
1597 DEBUG(3,("api_pipe_bind_req: Unknown pipe name %s in bind request.\n",
1598 get_pipe_name_from_iface(&hdr_rb
.rpc_context
[0].abstract
)));
1599 prs_mem_free(&p
->out_data
.frag
);
1600 prs_mem_free(&out_hdr_ba
);
1601 prs_mem_free(&out_auth
);
1603 return setup_bind_nak(p
);
1606 for (i
= 0; i
< rpc_lookup_size
; i
++) {
1607 if (strequal(rpc_lookup
[i
].pipe
.clnt
,
1608 get_pipe_name_from_iface(&p
->syntax
))) {
1609 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1610 rpc_lookup
[i
].pipe
.clnt
, rpc_lookup
[i
].pipe
.srv
));
1615 if (i
== rpc_lookup_size
) {
1616 DEBUG(0, ("module %s doesn't provide functions for "
1618 get_pipe_name_from_iface(&p
->syntax
),
1619 get_pipe_name_from_iface(&p
->syntax
)));
1624 /* name has to be \PIPE\xxxxx */
1625 fstrcpy(ack_pipe_name
, "\\PIPE\\");
1626 fstrcat(ack_pipe_name
, rpc_lookup
[i
].pipe
.srv
);
1628 DEBUG(5,("api_pipe_bind_req: make response. %d\n", __LINE__
));
1631 * Check if this is an authenticated bind request.
1634 if (p
->hdr
.auth_len
) {
1636 * Decode the authentication verifier.
1639 if(!smb_io_rpc_hdr_auth("", &auth_info
, rpc_in_p
, 0)) {
1640 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1644 auth_type
= auth_info
.auth_type
;
1646 /* Work out if we have to sign or seal etc. */
1647 switch (auth_info
.auth_level
) {
1648 case RPC_AUTH_LEVEL_INTEGRITY
:
1649 p
->auth
.auth_level
= PIPE_AUTH_LEVEL_INTEGRITY
;
1651 case RPC_AUTH_LEVEL_PRIVACY
:
1652 p
->auth
.auth_level
= PIPE_AUTH_LEVEL_PRIVACY
;
1655 DEBUG(0,("api_pipe_bind_req: unexpected auth level (%u).\n",
1656 (unsigned int)auth_info
.auth_level
));
1660 ZERO_STRUCT(auth_info
);
1663 assoc_gid
= hdr_rb
.bba
.assoc_gid
? hdr_rb
.bba
.assoc_gid
: 0x53f0;
1666 case RPC_NTLMSSP_AUTH_TYPE
:
1667 if (!pipe_ntlmssp_auth_bind(p
, rpc_in_p
, &auth_info
, &out_auth
)) {
1673 case RPC_SCHANNEL_AUTH_TYPE
:
1674 if (!pipe_schannel_auth_bind(p
, rpc_in_p
, &auth_info
, &out_auth
)) {
1679 case RPC_SPNEGO_AUTH_TYPE
:
1680 if (!pipe_spnego_auth_bind_negotiate(p
, rpc_in_p
, &auth_info
, &out_auth
)) {
1685 case RPC_ANONYMOUS_AUTH_TYPE
:
1686 /* Unauthenticated bind request. */
1687 /* We're finished - no more packets. */
1688 p
->auth
.auth_type
= PIPE_AUTH_TYPE_NONE
;
1689 /* We must set the pipe auth_level here also. */
1690 p
->auth
.auth_level
= PIPE_AUTH_LEVEL_NONE
;
1691 p
->pipe_bound
= True
;
1692 /* The session key was initialized from the SMB
1693 * session in make_internal_rpc_pipe_p */
1697 DEBUG(0,("api_pipe_bind_req: unknown auth type %x requested.\n", auth_type
));
1702 * Create the bind response struct.
1705 /* If the requested abstract synt uuid doesn't match our client pipe,
1706 reject the bind_ack & set the transfer interface synt to all 0's,
1707 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1709 Needed when adding entries to a DACL from NT5 - SK */
1711 if(check_bind_req(p
, &hdr_rb
.rpc_context
[0].abstract
, &hdr_rb
.rpc_context
[0].transfer
[0],
1712 hdr_rb
.rpc_context
[0].context_id
)) {
1713 init_rpc_hdr_ba(&hdr_ba
,
1714 RPC_MAX_PDU_FRAG_LEN
,
1715 RPC_MAX_PDU_FRAG_LEN
,
1719 &hdr_rb
.rpc_context
[0].transfer
[0]);
1721 RPC_IFACE null_interface
;
1722 ZERO_STRUCT(null_interface
);
1723 /* Rejection reason: abstract syntax not supported */
1724 init_rpc_hdr_ba(&hdr_ba
, RPC_MAX_PDU_FRAG_LEN
,
1725 RPC_MAX_PDU_FRAG_LEN
, assoc_gid
,
1726 ack_pipe_name
, 0x1, 0x2, 0x1,
1728 p
->pipe_bound
= False
;
1735 if(!smb_io_rpc_hdr_ba("", &hdr_ba
, &out_hdr_ba
, 0)) {
1736 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR_BA failed.\n"));
1741 * Create the header, now we know the length.
1744 if (prs_offset(&out_auth
)) {
1745 auth_len
= prs_offset(&out_auth
) - RPC_HDR_AUTH_LEN
;
1748 init_rpc_hdr(&p
->hdr
, RPC_BINDACK
, RPC_FLG_FIRST
| RPC_FLG_LAST
,
1750 RPC_HEADER_LEN
+ prs_offset(&out_hdr_ba
) + prs_offset(&out_auth
),
1754 * Marshall the header into the outgoing PDU.
1757 if(!smb_io_rpc_hdr("", &p
->hdr
, &p
->out_data
.frag
, 0)) {
1758 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR failed.\n"));
1763 * Now add the RPC_HDR_BA and any auth needed.
1766 if(!prs_append_prs_data(&p
->out_data
.frag
, &out_hdr_ba
)) {
1767 DEBUG(0,("api_pipe_bind_req: append of RPC_HDR_BA failed.\n"));
1771 if (auth_len
&& !prs_append_prs_data( &p
->out_data
.frag
, &out_auth
)) {
1772 DEBUG(0,("api_pipe_bind_req: append of auth info failed.\n"));
1777 * Setup the lengths for the initial reply.
1780 p
->out_data
.data_sent_length
= 0;
1781 p
->out_data
.current_pdu_sent
= 0;
1783 prs_mem_free(&out_hdr_ba
);
1784 prs_mem_free(&out_auth
);
1790 prs_mem_free(&p
->out_data
.frag
);
1791 prs_mem_free(&out_hdr_ba
);
1792 prs_mem_free(&out_auth
);
1793 return setup_bind_nak(p
);
1796 /****************************************************************************
1797 Deal with an alter context call. Can be third part of 3 leg auth request for
1799 ****************************************************************************/
1801 bool api_pipe_alter_context(pipes_struct
*p
, prs_struct
*rpc_in_p
)
1805 RPC_HDR_AUTH auth_info
;
1807 fstring ack_pipe_name
;
1808 prs_struct out_hdr_ba
;
1809 prs_struct out_auth
;
1812 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
1815 * Marshall directly into the outgoing PDU space. We
1816 * must do this as we need to set to the bind response
1817 * header and are never sending more than one PDU here.
1821 * Setup the memory to marshall the ba header, and the
1825 if(!prs_init(&out_hdr_ba
, 1024, p
->mem_ctx
, MARSHALL
)) {
1826 DEBUG(0,("api_pipe_alter_context: malloc out_hdr_ba failed.\n"));
1827 prs_mem_free(&p
->out_data
.frag
);
1831 if(!prs_init(&out_auth
, 1024, p
->mem_ctx
, MARSHALL
)) {
1832 DEBUG(0,("api_pipe_alter_context: malloc out_auth failed.\n"));
1833 prs_mem_free(&p
->out_data
.frag
);
1834 prs_mem_free(&out_hdr_ba
);
1838 ZERO_STRUCT(hdr_rb
);
1840 DEBUG(5,("api_pipe_alter_context: decode request. %d\n", __LINE__
));
1842 /* decode the alter context request */
1843 if(!smb_io_rpc_hdr_rb("", &hdr_rb
, rpc_in_p
, 0)) {
1844 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_RB struct.\n"));
1848 /* secondary address CAN be NULL
1849 * as the specs say it's ignored.
1850 * It MUST be NULL to have the spoolss working.
1852 fstrcpy(ack_pipe_name
,"");
1854 DEBUG(5,("api_pipe_alter_context: make response. %d\n", __LINE__
));
1857 * Check if this is an authenticated alter context request.
1860 if (p
->hdr
.auth_len
!= 0) {
1862 * Decode the authentication verifier.
1865 if(!smb_io_rpc_hdr_auth("", &auth_info
, rpc_in_p
, 0)) {
1866 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1871 * Currently only the SPNEGO auth type uses the alter ctx
1872 * response in place of the NTLMSSP auth3 type.
1875 if (auth_info
.auth_type
== RPC_SPNEGO_AUTH_TYPE
) {
1876 /* We can only finish if the pipe is unbound. */
1877 if (!p
->pipe_bound
) {
1878 if (!pipe_spnego_auth_bind_continue(p
, rpc_in_p
, &auth_info
, &out_auth
)) {
1886 ZERO_STRUCT(auth_info
);
1889 assoc_gid
= hdr_rb
.bba
.assoc_gid
? hdr_rb
.bba
.assoc_gid
: 0x53f0;
1892 * Create the bind response struct.
1895 /* If the requested abstract synt uuid doesn't match our client pipe,
1896 reject the bind_ack & set the transfer interface synt to all 0's,
1897 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1899 Needed when adding entries to a DACL from NT5 - SK */
1901 if(check_bind_req(p
, &hdr_rb
.rpc_context
[0].abstract
, &hdr_rb
.rpc_context
[0].transfer
[0],
1902 hdr_rb
.rpc_context
[0].context_id
)) {
1903 init_rpc_hdr_ba(&hdr_ba
,
1904 RPC_MAX_PDU_FRAG_LEN
,
1905 RPC_MAX_PDU_FRAG_LEN
,
1909 &hdr_rb
.rpc_context
[0].transfer
[0]);
1911 RPC_IFACE null_interface
;
1912 ZERO_STRUCT(null_interface
);
1913 /* Rejection reason: abstract syntax not supported */
1914 init_rpc_hdr_ba(&hdr_ba
, RPC_MAX_PDU_FRAG_LEN
,
1915 RPC_MAX_PDU_FRAG_LEN
, assoc_gid
,
1916 ack_pipe_name
, 0x1, 0x2, 0x1,
1918 p
->pipe_bound
= False
;
1925 if(!smb_io_rpc_hdr_ba("", &hdr_ba
, &out_hdr_ba
, 0)) {
1926 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR_BA failed.\n"));
1931 * Create the header, now we know the length.
1934 if (prs_offset(&out_auth
)) {
1935 auth_len
= prs_offset(&out_auth
) - RPC_HDR_AUTH_LEN
;
1938 init_rpc_hdr(&p
->hdr
, RPC_ALTCONTRESP
, RPC_FLG_FIRST
| RPC_FLG_LAST
,
1940 RPC_HEADER_LEN
+ prs_offset(&out_hdr_ba
) + prs_offset(&out_auth
),
1944 * Marshall the header into the outgoing PDU.
1947 if(!smb_io_rpc_hdr("", &p
->hdr
, &p
->out_data
.frag
, 0)) {
1948 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR failed.\n"));
1953 * Now add the RPC_HDR_BA and any auth needed.
1956 if(!prs_append_prs_data(&p
->out_data
.frag
, &out_hdr_ba
)) {
1957 DEBUG(0,("api_pipe_alter_context: append of RPC_HDR_BA failed.\n"));
1961 if (auth_len
&& !prs_append_prs_data(&p
->out_data
.frag
, &out_auth
)) {
1962 DEBUG(0,("api_pipe_alter_context: append of auth info failed.\n"));
1967 * Setup the lengths for the initial reply.
1970 p
->out_data
.data_sent_length
= 0;
1971 p
->out_data
.current_pdu_sent
= 0;
1973 prs_mem_free(&out_hdr_ba
);
1974 prs_mem_free(&out_auth
);
1980 prs_mem_free(&p
->out_data
.frag
);
1981 prs_mem_free(&out_hdr_ba
);
1982 prs_mem_free(&out_auth
);
1983 return setup_bind_nak(p
);
1986 /****************************************************************************
1987 Deal with NTLMSSP sign & seal processing on an RPC request.
1988 ****************************************************************************/
1990 bool api_pipe_ntlmssp_auth_process(pipes_struct
*p
, prs_struct
*rpc_in
,
1991 uint32
*p_ss_padding_len
, NTSTATUS
*pstatus
)
1993 RPC_HDR_AUTH auth_info
;
1994 uint32 auth_len
= p
->hdr
.auth_len
;
1995 uint32 save_offset
= prs_offset(rpc_in
);
1996 AUTH_NTLMSSP_STATE
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
1997 unsigned char *data
= NULL
;
1999 unsigned char *full_packet_data
= NULL
;
2000 size_t full_packet_data_len
;
2001 DATA_BLOB auth_blob
;
2003 *pstatus
= NT_STATUS_OK
;
2005 if (p
->auth
.auth_level
== PIPE_AUTH_LEVEL_NONE
|| p
->auth
.auth_level
== PIPE_AUTH_LEVEL_CONNECT
) {
2010 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2014 /* Ensure there's enough data for an authenticated request. */
2015 if ((auth_len
> RPC_MAX_SIGN_SIZE
) ||
2016 (RPC_HEADER_LEN
+ RPC_HDR_REQ_LEN
+ RPC_HDR_AUTH_LEN
+ auth_len
> p
->hdr
.frag_len
)) {
2017 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len %u is too large.\n",
2018 (unsigned int)auth_len
));
2019 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2024 * We need the full packet data + length (minus auth stuff) as well as the packet data + length
2025 * after the RPC header.
2026 * We need to pass in the full packet (minus auth len) to the NTLMSSP sign and check seal
2027 * functions as NTLMv2 checks the rpc headers also.
2030 data
= (unsigned char *)(prs_data_p(rpc_in
) + RPC_HDR_REQ_LEN
);
2031 data_len
= (size_t)(p
->hdr
.frag_len
- RPC_HEADER_LEN
- RPC_HDR_REQ_LEN
- RPC_HDR_AUTH_LEN
- auth_len
);
2033 full_packet_data
= p
->in_data
.current_in_pdu
;
2034 full_packet_data_len
= p
->hdr
.frag_len
- auth_len
;
2036 /* Pull the auth header and the following data into a blob. */
2037 if(!prs_set_offset(rpc_in
, RPC_HDR_REQ_LEN
+ data_len
)) {
2038 DEBUG(0,("api_pipe_ntlmssp_auth_process: cannot move offset to %u.\n",
2039 (unsigned int)RPC_HDR_REQ_LEN
+ (unsigned int)data_len
));
2040 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2044 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
, rpc_in
, 0)) {
2045 DEBUG(0,("api_pipe_ntlmssp_auth_process: failed to unmarshall RPC_HDR_AUTH.\n"));
2046 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2050 auth_blob
.data
= (unsigned char *)prs_data_p(rpc_in
) + prs_offset(rpc_in
);
2051 auth_blob
.length
= auth_len
;
2053 switch (p
->auth
.auth_level
) {
2054 case PIPE_AUTH_LEVEL_PRIVACY
:
2055 /* Data is encrypted. */
2056 *pstatus
= ntlmssp_unseal_packet(a
->ntlmssp_state
,
2059 full_packet_data_len
,
2061 if (!NT_STATUS_IS_OK(*pstatus
)) {
2065 case PIPE_AUTH_LEVEL_INTEGRITY
:
2066 /* Data is signed. */
2067 *pstatus
= ntlmssp_check_packet(a
->ntlmssp_state
,
2070 full_packet_data_len
,
2072 if (!NT_STATUS_IS_OK(*pstatus
)) {
2077 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2082 * Return the current pointer to the data offset.
2085 if(!prs_set_offset(rpc_in
, save_offset
)) {
2086 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
2087 (unsigned int)save_offset
));
2088 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2093 * Remember the padding length. We must remove it from the real data
2094 * stream once the sign/seal is done.
2097 *p_ss_padding_len
= auth_info
.auth_pad_len
;
2102 /****************************************************************************
2103 Deal with schannel processing on an RPC request.
2104 ****************************************************************************/
2106 bool api_pipe_schannel_process(pipes_struct
*p
, prs_struct
*rpc_in
, uint32
*p_ss_padding_len
)
2110 uint32 save_offset
= prs_offset(rpc_in
);
2111 RPC_HDR_AUTH auth_info
;
2112 RPC_AUTH_SCHANNEL_CHK schannel_chk
;
2114 auth_len
= p
->hdr
.auth_len
;
2116 if (auth_len
< RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
||
2117 auth_len
> RPC_HEADER_LEN
+
2121 DEBUG(0,("Incorrect auth_len %u.\n", (unsigned int)auth_len
));
2126 * The following is that length of the data we must verify or unseal.
2127 * This doesn't include the RPC headers or the auth_len or the RPC_HDR_AUTH_LEN
2128 * preceeding the auth_data.
2131 if (p
->hdr
.frag_len
< RPC_HEADER_LEN
+ RPC_HDR_REQ_LEN
+ RPC_HDR_AUTH_LEN
+ auth_len
) {
2132 DEBUG(0,("Incorrect frag %u, auth %u.\n",
2133 (unsigned int)p
->hdr
.frag_len
,
2134 (unsigned int)auth_len
));
2138 data_len
= p
->hdr
.frag_len
- RPC_HEADER_LEN
- RPC_HDR_REQ_LEN
-
2139 RPC_HDR_AUTH_LEN
- auth_len
;
2141 DEBUG(5,("data %d auth %d\n", data_len
, auth_len
));
2143 if(!prs_set_offset(rpc_in
, RPC_HDR_REQ_LEN
+ data_len
)) {
2144 DEBUG(0,("cannot move offset to %u.\n",
2145 (unsigned int)RPC_HDR_REQ_LEN
+ data_len
));
2149 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
, rpc_in
, 0)) {
2150 DEBUG(0,("failed to unmarshall RPC_HDR_AUTH.\n"));
2154 if (auth_info
.auth_type
!= RPC_SCHANNEL_AUTH_TYPE
) {
2155 DEBUG(0,("Invalid auth info %d on schannel\n",
2156 auth_info
.auth_type
));
2160 if(!smb_io_rpc_auth_schannel_chk("", RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
, &schannel_chk
, rpc_in
, 0)) {
2161 DEBUG(0,("failed to unmarshal RPC_AUTH_SCHANNEL_CHK.\n"));
2165 if (!schannel_decode(p
->auth
.a_u
.schannel_auth
,
2167 SENDER_IS_INITIATOR
,
2169 prs_data_p(rpc_in
)+RPC_HDR_REQ_LEN
, data_len
)) {
2170 DEBUG(3,("failed to decode PDU\n"));
2175 * Return the current pointer to the data offset.
2178 if(!prs_set_offset(rpc_in
, save_offset
)) {
2179 DEBUG(0,("failed to set offset back to %u\n",
2180 (unsigned int)save_offset
));
2184 /* The sequence number gets incremented on both send and receive. */
2185 p
->auth
.a_u
.schannel_auth
->seq_num
++;
2188 * Remember the padding length. We must remove it from the real data
2189 * stream once the sign/seal is done.
2192 *p_ss_padding_len
= auth_info
.auth_pad_len
;
2197 /****************************************************************************
2198 Find the set of RPC functions associated with this context_id
2199 ****************************************************************************/
2201 static PIPE_RPC_FNS
* find_pipe_fns_by_context( PIPE_RPC_FNS
*list
, uint32 context_id
)
2203 PIPE_RPC_FNS
*fns
= NULL
;
2206 DEBUG(0,("find_pipe_fns_by_context: ERROR! No context list for pipe!\n"));
2210 for (fns
=list
; fns
; fns
=fns
->next
) {
2211 if ( fns
->context_id
== context_id
)
2217 /****************************************************************************
2219 ****************************************************************************/
2221 void free_pipe_rpc_context( PIPE_RPC_FNS
*list
)
2223 PIPE_RPC_FNS
*tmp
= list
;
2235 static bool api_rpcTNP(pipes_struct
*p
,
2236 const struct api_struct
*api_rpc_cmds
, int n_cmds
);
2238 /****************************************************************************
2239 Find the correct RPC function to call for this request.
2240 If the pipe is authenticated then become the correct UNIX user
2241 before doing the call.
2242 ****************************************************************************/
2244 bool api_pipe_request(pipes_struct
*p
)
2247 bool changed_user
= False
;
2248 PIPE_RPC_FNS
*pipe_fns
;
2250 if (p
->pipe_bound
&&
2251 ((p
->auth
.auth_type
== PIPE_AUTH_TYPE_NTLMSSP
) ||
2252 (p
->auth
.auth_type
== PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
))) {
2253 if(!become_authenticated_pipe_user(p
)) {
2254 prs_mem_free(&p
->out_data
.rdata
);
2257 changed_user
= True
;
2260 DEBUG(5, ("Requested \\PIPE\\%s\n",
2261 get_pipe_name_from_iface(&p
->syntax
)));
2263 /* get the set of RPC functions for this context */
2265 pipe_fns
= find_pipe_fns_by_context(p
->contexts
, p
->hdr_req
.context_id
);
2268 TALLOC_CTX
*frame
= talloc_stackframe();
2269 ret
= api_rpcTNP(p
, pipe_fns
->cmds
, pipe_fns
->n_cmds
);
2273 DEBUG(0,("api_pipe_request: No rpc function table associated with context [%d] on pipe [%s]\n",
2274 p
->hdr_req
.context_id
,
2275 get_pipe_name_from_iface(&p
->syntax
)));
2279 unbecome_authenticated_pipe_user();
2285 /*******************************************************************
2286 Calls the underlying RPC function for a named pipe.
2287 ********************************************************************/
2289 static bool api_rpcTNP(pipes_struct
*p
,
2290 const struct api_struct
*api_rpc_cmds
, int n_cmds
)
2293 uint32 offset1
, offset2
;
2295 /* interpret the command */
2296 DEBUG(4,("api_rpcTNP: %s op 0x%x - ",
2297 get_pipe_name_from_iface(&p
->syntax
), p
->hdr_req
.opnum
));
2299 if (DEBUGLEVEL
>= 50) {
2301 slprintf(name
, sizeof(name
)-1, "in_%s",
2302 get_pipe_name_from_iface(&p
->syntax
));
2303 prs_dump(name
, p
->hdr_req
.opnum
, &p
->in_data
.data
);
2306 for (fn_num
= 0; fn_num
< n_cmds
; fn_num
++) {
2307 if (api_rpc_cmds
[fn_num
].opnum
== p
->hdr_req
.opnum
&& api_rpc_cmds
[fn_num
].fn
!= NULL
) {
2308 DEBUG(3,("api_rpcTNP: rpc command: %s\n", api_rpc_cmds
[fn_num
].name
));
2313 if (fn_num
== n_cmds
) {
2315 * For an unknown RPC just return a fault PDU but
2316 * return True to allow RPC's on the pipe to continue
2317 * and not put the pipe into fault state. JRA.
2319 DEBUG(4, ("unknown\n"));
2320 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
2324 offset1
= prs_offset(&p
->out_data
.rdata
);
2326 DEBUG(6, ("api_rpc_cmds[%d].fn == %p\n",
2327 fn_num
, api_rpc_cmds
[fn_num
].fn
));
2328 /* do the actual command */
2329 if(!api_rpc_cmds
[fn_num
].fn(p
)) {
2330 DEBUG(0,("api_rpcTNP: %s: %s failed.\n",
2331 get_pipe_name_from_iface(&p
->syntax
),
2332 api_rpc_cmds
[fn_num
].name
));
2333 prs_mem_free(&p
->out_data
.rdata
);
2337 if (p
->bad_handle_fault_state
) {
2338 DEBUG(4,("api_rpcTNP: bad handle fault return.\n"));
2339 p
->bad_handle_fault_state
= False
;
2340 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_CONTEXT_MISMATCH
));
2344 if (p
->rng_fault_state
) {
2345 DEBUG(4, ("api_rpcTNP: rng fault return\n"));
2346 p
->rng_fault_state
= False
;
2347 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
2351 offset2
= prs_offset(&p
->out_data
.rdata
);
2352 prs_set_offset(&p
->out_data
.rdata
, offset1
);
2353 if (DEBUGLEVEL
>= 50) {
2355 slprintf(name
, sizeof(name
)-1, "out_%s",
2356 get_pipe_name_from_iface(&p
->syntax
));
2357 prs_dump(name
, p
->hdr_req
.opnum
, &p
->out_data
.rdata
);
2359 prs_set_offset(&p
->out_data
.rdata
, offset2
);
2361 DEBUG(5,("api_rpcTNP: called %s successfully\n",
2362 get_pipe_name_from_iface(&p
->syntax
)));
2364 /* Check for buffer underflow in rpc parsing */
2366 if ((DEBUGLEVEL
>= 10) &&
2367 (prs_offset(&p
->in_data
.data
) != prs_data_size(&p
->in_data
.data
))) {
2368 size_t data_len
= prs_data_size(&p
->in_data
.data
) - prs_offset(&p
->in_data
.data
);
2369 char *data
= (char *)SMB_MALLOC(data_len
);
2371 DEBUG(10, ("api_rpcTNP: rpc input buffer underflow (parse error?)\n"));
2373 prs_uint8s(False
, "", &p
->in_data
.data
, 0, (unsigned char *)data
, (uint32
)data_len
);