2 * Unix SMB/CIFS implementation.
3 * RPC Pipe client / server routines
4 * Almost completely rewritten by (C) Jeremy Allison 2005.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
20 /* this module apparently provides an implementation of DCE/RPC over a
21 * named pipe (IPC$ connection using SMBtrans). details of DCE/RPC
22 * documentation are available (in on-line form) from the X-Open group.
24 * this module should provide a level of abstraction between SMB
25 * and DCE/RPC, while minimising the amount of mallocs, unnecessary
26 * data copies, and network traffic.
31 #include "../librpc/gen_ndr/ndr_schannel.h"
32 #include "../libcli/auth/schannel.h"
33 #include "../libcli/auth/spnego.h"
36 extern struct current_user current_user
;
39 #define DBGC_CLASS DBGC_RPC_SRV
41 static void free_pipe_ntlmssp_auth_data(struct pipe_auth_data
*auth
)
43 AUTH_NTLMSSP_STATE
*a
= auth
->a_u
.auth_ntlmssp_state
;
48 auth
->a_u
.auth_ntlmssp_state
= NULL
;
51 static DATA_BLOB
generic_session_key(void)
53 return data_blob("SystemLibraryDTC", 16);
56 /*******************************************************************
57 Generate the next PDU to be returned from the data in p->rdata.
59 ********************************************************************/
61 static bool create_next_pdu_ntlmssp(pipes_struct
*p
)
63 RPC_HDR_RESP hdr_resp
;
64 uint32 ss_padding_len
= 0;
65 uint32 data_space_available
;
70 RPC_HDR_AUTH auth_info
;
71 uint8 auth_type
, auth_level
;
72 AUTH_NTLMSSP_STATE
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
75 * If we're in the fault state, keep returning fault PDU's until
76 * the pipe gets closed. JRA.
80 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
84 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
86 /* Change the incoming request header to a response. */
87 p
->hdr
.pkt_type
= DCERPC_PKT_RESPONSE
;
89 /* Set up rpc header flags. */
90 if (p
->out_data
.data_sent_length
== 0) {
91 p
->hdr
.flags
= DCERPC_PFC_FLAG_FIRST
;
97 * Work out how much we can fit in a single PDU.
100 data_len_left
= prs_offset(&p
->out_data
.rdata
) - p
->out_data
.data_sent_length
;
103 * Ensure there really is data left to send.
107 DEBUG(0,("create_next_pdu_ntlmssp: no data left to send !\n"));
111 if (data_len_left
% SERVER_NDR_PADDING_SIZE
) {
112 ss_padding_len
= SERVER_NDR_PADDING_SIZE
- (data_len_left
% SERVER_NDR_PADDING_SIZE
);
113 DEBUG(10,("create_next_pdu_ntlmssp: adding sign/seal padding of %u\n",
117 data_space_available
= RPC_MAX_PDU_FRAG_LEN
- RPC_HEADER_LEN
-
118 RPC_HDR_RESP_LEN
- ss_padding_len
- RPC_HDR_AUTH_LEN
-
122 * The amount we send is the minimum of the available
123 * space and the amount left to send.
126 data_len
= MIN(data_len_left
, data_space_available
);
129 * Set up the alloc hint. This should be the data left to
133 hdr_resp
.alloc_hint
= data_len_left
;
136 * Work out if this PDU will be the last.
139 if(p
->out_data
.data_sent_length
+ data_len
>= prs_offset(&p
->out_data
.rdata
)) {
140 p
->hdr
.flags
|= DCERPC_PFC_FLAG_LAST
;
144 * Set up the header lengths.
147 p
->hdr
.frag_len
= RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+
148 data_len
+ ss_padding_len
+
149 RPC_HDR_AUTH_LEN
+ NTLMSSP_SIG_SIZE
;
150 p
->hdr
.auth_len
= NTLMSSP_SIG_SIZE
;
154 * Init the parse struct to point at the outgoing
158 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
160 /* Store the header in the data stream. */
161 if(!smb_io_rpc_hdr("hdr", &p
->hdr
, &p
->out_data
.frag
, 0)) {
162 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR.\n"));
163 prs_mem_free(&p
->out_data
.frag
);
167 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &p
->out_data
.frag
, 0)) {
168 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_RESP.\n"));
169 prs_mem_free(&p
->out_data
.frag
);
173 /* Copy the data into the PDU. */
175 if(!prs_append_some_prs_data(&p
->out_data
.frag
, &p
->out_data
.rdata
,
176 p
->out_data
.data_sent_length
, data_len
)) {
177 DEBUG(0,("create_next_pdu_ntlmssp: failed to copy %u bytes of data.\n", (unsigned int)data_len
));
178 prs_mem_free(&p
->out_data
.frag
);
182 /* Copy the sign/seal padding data. */
183 if (ss_padding_len
) {
184 char pad
[SERVER_NDR_PADDING_SIZE
];
186 memset(pad
, '\0', SERVER_NDR_PADDING_SIZE
);
187 if (!prs_copy_data_in(&p
->out_data
.frag
, pad
,
189 DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes of pad data.\n",
190 (unsigned int)ss_padding_len
));
191 prs_mem_free(&p
->out_data
.frag
);
197 /* Now write out the auth header and null blob. */
198 if (p
->auth
.auth_type
== PIPE_AUTH_TYPE_NTLMSSP
) {
199 auth_type
= DCERPC_AUTH_TYPE_NTLMSSP
;
201 auth_type
= DCERPC_AUTH_TYPE_SPNEGO
;
203 if (p
->auth
.auth_level
== DCERPC_AUTH_LEVEL_PRIVACY
) {
204 auth_level
= DCERPC_AUTH_LEVEL_PRIVACY
;
206 auth_level
= DCERPC_AUTH_LEVEL_INTEGRITY
;
209 init_rpc_hdr_auth(&auth_info
, auth_type
, auth_level
, ss_padding_len
, 1 /* context id. */);
211 if (!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
,
212 &p
->out_data
.frag
, 0)) {
213 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_AUTH.\n"));
214 prs_mem_free(&p
->out_data
.frag
);
218 /* Generate the sign blob. */
220 switch (p
->auth
.auth_level
) {
221 case DCERPC_AUTH_LEVEL_PRIVACY
:
222 /* Data portion is encrypted. */
223 status
= ntlmssp_seal_packet(
225 (uint8_t *)prs_data_p(&p
->out_data
.frag
)
226 + RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
,
227 data_len
+ ss_padding_len
,
228 (unsigned char *)prs_data_p(&p
->out_data
.frag
),
229 (size_t)prs_offset(&p
->out_data
.frag
),
231 if (!NT_STATUS_IS_OK(status
)) {
232 data_blob_free(&auth_blob
);
233 prs_mem_free(&p
->out_data
.frag
);
237 case DCERPC_AUTH_LEVEL_INTEGRITY
:
238 /* Data is signed. */
239 status
= ntlmssp_sign_packet(
241 (unsigned char *)prs_data_p(&p
->out_data
.frag
)
242 + RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
,
243 data_len
+ ss_padding_len
,
244 (unsigned char *)prs_data_p(&p
->out_data
.frag
),
245 (size_t)prs_offset(&p
->out_data
.frag
),
247 if (!NT_STATUS_IS_OK(status
)) {
248 data_blob_free(&auth_blob
);
249 prs_mem_free(&p
->out_data
.frag
);
254 prs_mem_free(&p
->out_data
.frag
);
258 /* Append the auth blob. */
259 if (!prs_copy_data_in(&p
->out_data
.frag
, (char *)auth_blob
.data
,
261 DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes auth blob.\n",
262 (unsigned int)NTLMSSP_SIG_SIZE
));
263 data_blob_free(&auth_blob
);
264 prs_mem_free(&p
->out_data
.frag
);
268 data_blob_free(&auth_blob
);
271 * Setup the counts for this PDU.
274 p
->out_data
.data_sent_length
+= data_len
;
275 p
->out_data
.current_pdu_sent
= 0;
280 /*******************************************************************
281 Generate the next PDU to be returned from the data in p->rdata.
282 Return an schannel authenticated fragment.
283 ********************************************************************/
285 static bool create_next_pdu_schannel(pipes_struct
*p
)
287 RPC_HDR_RESP hdr_resp
;
288 uint32 ss_padding_len
= 0;
290 uint32 data_space_available
;
291 uint32 data_len_left
;
296 * If we're in the fault state, keep returning fault PDU's until
297 * the pipe gets closed. JRA.
301 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
305 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
307 /* Change the incoming request header to a response. */
308 p
->hdr
.pkt_type
= DCERPC_PKT_RESPONSE
;
310 /* Set up rpc header flags. */
311 if (p
->out_data
.data_sent_length
== 0) {
312 p
->hdr
.flags
= DCERPC_PFC_FLAG_FIRST
;
318 * Work out how much we can fit in a single PDU.
321 data_len_left
= prs_offset(&p
->out_data
.rdata
) - p
->out_data
.data_sent_length
;
324 * Ensure there really is data left to send.
328 DEBUG(0,("create_next_pdu_schannel: no data left to send !\n"));
332 if (data_len_left
% SERVER_NDR_PADDING_SIZE
) {
333 ss_padding_len
= SERVER_NDR_PADDING_SIZE
- (data_len_left
% SERVER_NDR_PADDING_SIZE
);
334 DEBUG(10,("create_next_pdu_schannel: adding sign/seal padding of %u\n",
338 data_space_available
= RPC_MAX_PDU_FRAG_LEN
- RPC_HEADER_LEN
339 - RPC_HDR_RESP_LEN
- ss_padding_len
- RPC_HDR_AUTH_LEN
340 - RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
;
343 * The amount we send is the minimum of the available
344 * space and the amount left to send.
347 data_len
= MIN(data_len_left
, data_space_available
);
350 * Set up the alloc hint. This should be the data left to
354 hdr_resp
.alloc_hint
= data_len_left
;
357 * Work out if this PDU will be the last.
360 if(p
->out_data
.data_sent_length
+ data_len
>= prs_offset(&p
->out_data
.rdata
)) {
361 p
->hdr
.flags
|= DCERPC_PFC_FLAG_LAST
;
364 p
->hdr
.frag_len
= RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+ data_len
+ ss_padding_len
+
365 RPC_HDR_AUTH_LEN
+ RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
;
366 p
->hdr
.auth_len
= RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
;
369 * Init the parse struct to point at the outgoing
373 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
375 /* Store the header in the data stream. */
376 if(!smb_io_rpc_hdr("hdr", &p
->hdr
, &p
->out_data
.frag
, 0)) {
377 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR.\n"));
378 prs_mem_free(&p
->out_data
.frag
);
382 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &p
->out_data
.frag
, 0)) {
383 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_RESP.\n"));
384 prs_mem_free(&p
->out_data
.frag
);
388 /* Store the current offset. */
389 data_pos
= prs_offset(&p
->out_data
.frag
);
391 /* Copy the data into the PDU. */
393 if(!prs_append_some_prs_data(&p
->out_data
.frag
, &p
->out_data
.rdata
,
394 p
->out_data
.data_sent_length
, data_len
)) {
395 DEBUG(0,("create_next_pdu_schannel: failed to copy %u bytes of data.\n", (unsigned int)data_len
));
396 prs_mem_free(&p
->out_data
.frag
);
400 /* Copy the sign/seal padding data. */
401 if (ss_padding_len
) {
402 char pad
[SERVER_NDR_PADDING_SIZE
];
403 memset(pad
, '\0', SERVER_NDR_PADDING_SIZE
);
404 if (!prs_copy_data_in(&p
->out_data
.frag
, pad
,
406 DEBUG(0,("create_next_pdu_schannel: failed to add %u bytes of pad data.\n", (unsigned int)ss_padding_len
));
407 prs_mem_free(&p
->out_data
.frag
);
414 * Schannel processing.
416 RPC_HDR_AUTH auth_info
;
420 /* Check it's the type of reply we were expecting to decode */
422 init_rpc_hdr_auth(&auth_info
,
423 DCERPC_AUTH_TYPE_SCHANNEL
,
424 p
->auth
.auth_level
== DCERPC_AUTH_LEVEL_PRIVACY
?
425 DCERPC_AUTH_LEVEL_PRIVACY
: DCERPC_AUTH_LEVEL_INTEGRITY
,
428 if (!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
,
429 &p
->out_data
.frag
, 0)) {
430 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_AUTH.\n"));
431 prs_mem_free(&p
->out_data
.frag
);
435 data
= (uint8_t *)prs_data_p(&p
->out_data
.frag
) + data_pos
;
437 switch (p
->auth
.auth_level
) {
438 case DCERPC_AUTH_LEVEL_PRIVACY
:
439 status
= netsec_outgoing_packet(p
->auth
.a_u
.schannel_auth
,
443 data_len
+ ss_padding_len
,
446 case DCERPC_AUTH_LEVEL_INTEGRITY
:
447 status
= netsec_outgoing_packet(p
->auth
.a_u
.schannel_auth
,
451 data_len
+ ss_padding_len
,
455 status
= NT_STATUS_INTERNAL_ERROR
;
459 if (!NT_STATUS_IS_OK(status
)) {
460 DEBUG(0,("create_next_pdu_schannel: failed to process packet: %s\n",
462 prs_mem_free(&p
->out_data
.frag
);
466 /* Finally marshall the blob. */
468 if (DEBUGLEVEL
>= 10) {
469 dump_NL_AUTH_SIGNATURE(talloc_tos(), &blob
);
472 if (!prs_copy_data_in(&p
->out_data
.frag
, (const char *)blob
.data
, blob
.length
)) {
473 prs_mem_free(&p
->out_data
.frag
);
479 * Setup the counts for this PDU.
482 p
->out_data
.data_sent_length
+= data_len
;
483 p
->out_data
.current_pdu_sent
= 0;
488 /*******************************************************************
489 Generate the next PDU to be returned from the data in p->rdata.
490 No authentication done.
491 ********************************************************************/
493 static bool create_next_pdu_noauth(pipes_struct
*p
)
495 RPC_HDR_RESP hdr_resp
;
497 uint32 data_space_available
;
498 uint32 data_len_left
;
501 * If we're in the fault state, keep returning fault PDU's until
502 * the pipe gets closed. JRA.
506 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
510 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
512 /* Change the incoming request header to a response. */
513 p
->hdr
.pkt_type
= DCERPC_PKT_RESPONSE
;
515 /* Set up rpc header flags. */
516 if (p
->out_data
.data_sent_length
== 0) {
517 p
->hdr
.flags
= DCERPC_PFC_FLAG_FIRST
;
523 * Work out how much we can fit in a single PDU.
526 data_len_left
= prs_offset(&p
->out_data
.rdata
) - p
->out_data
.data_sent_length
;
529 * Ensure there really is data left to send.
533 DEBUG(0,("create_next_pdu_noath: no data left to send !\n"));
537 data_space_available
= RPC_MAX_PDU_FRAG_LEN
- RPC_HEADER_LEN
541 * The amount we send is the minimum of the available
542 * space and the amount left to send.
545 data_len
= MIN(data_len_left
, data_space_available
);
548 * Set up the alloc hint. This should be the data left to
552 hdr_resp
.alloc_hint
= data_len_left
;
555 * Work out if this PDU will be the last.
558 if(p
->out_data
.data_sent_length
+ data_len
>= prs_offset(&p
->out_data
.rdata
)) {
559 p
->hdr
.flags
|= DCERPC_PFC_FLAG_LAST
;
563 * Set up the header lengths.
566 p
->hdr
.frag_len
= RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+ data_len
;
570 * Init the parse struct to point at the outgoing
574 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
576 /* Store the header in the data stream. */
577 if(!smb_io_rpc_hdr("hdr", &p
->hdr
, &p
->out_data
.frag
, 0)) {
578 DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR.\n"));
579 prs_mem_free(&p
->out_data
.frag
);
583 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &p
->out_data
.frag
, 0)) {
584 DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR_RESP.\n"));
585 prs_mem_free(&p
->out_data
.frag
);
589 /* Copy the data into the PDU. */
591 if(!prs_append_some_prs_data(&p
->out_data
.frag
, &p
->out_data
.rdata
,
592 p
->out_data
.data_sent_length
, data_len
)) {
593 DEBUG(0,("create_next_pdu_noauth: failed to copy %u bytes of data.\n", (unsigned int)data_len
));
594 prs_mem_free(&p
->out_data
.frag
);
599 * Setup the counts for this PDU.
602 p
->out_data
.data_sent_length
+= data_len
;
603 p
->out_data
.current_pdu_sent
= 0;
608 /*******************************************************************
609 Generate the next PDU to be returned from the data in p->rdata.
610 ********************************************************************/
612 bool create_next_pdu(pipes_struct
*p
)
614 switch(p
->auth
.auth_level
) {
615 case DCERPC_AUTH_LEVEL_NONE
:
616 case DCERPC_AUTH_LEVEL_CONNECT
:
617 /* This is incorrect for auth level connect. Fixme. JRA */
618 return create_next_pdu_noauth(p
);
621 switch(p
->auth
.auth_type
) {
622 case PIPE_AUTH_TYPE_NTLMSSP
:
623 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
:
624 return create_next_pdu_ntlmssp(p
);
625 case PIPE_AUTH_TYPE_SCHANNEL
:
626 return create_next_pdu_schannel(p
);
632 DEBUG(0,("create_next_pdu: invalid internal auth level %u / type %u",
633 (unsigned int)p
->auth
.auth_level
,
634 (unsigned int)p
->auth
.auth_type
));
638 /*******************************************************************
639 Process an NTLMSSP authentication response.
640 If this function succeeds, the user has been authenticated
641 and their domain, name and calling workstation stored in
643 *******************************************************************/
645 static bool pipe_ntlmssp_verify_final(pipes_struct
*p
, DATA_BLOB
*p_resp_blob
)
647 DATA_BLOB session_key
, reply
;
649 AUTH_NTLMSSP_STATE
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
652 DEBUG(5,("pipe_ntlmssp_verify_final: pipe %s checking user details\n",
653 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
)));
657 /* this has to be done as root in order to verify the password */
659 status
= auth_ntlmssp_update(a
, *p_resp_blob
, &reply
);
662 /* Don't generate a reply. */
663 data_blob_free(&reply
);
665 if (!NT_STATUS_IS_OK(status
)) {
669 /* Finally - if the pipe negotiated integrity (sign) or privacy (seal)
670 ensure the underlying NTLMSSP flags are also set. If not we should
673 if (p
->auth
.auth_level
== DCERPC_AUTH_LEVEL_INTEGRITY
) {
674 if (!(a
->ntlmssp_state
->neg_flags
& NTLMSSP_NEGOTIATE_SIGN
)) {
675 DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet integrity requested "
676 "but client declined signing.\n",
677 get_pipe_name_from_syntax(talloc_tos(),
682 if (p
->auth
.auth_level
== DCERPC_AUTH_LEVEL_PRIVACY
) {
683 if (!(a
->ntlmssp_state
->neg_flags
& NTLMSSP_NEGOTIATE_SEAL
)) {
684 DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet privacy requested "
685 "but client declined sealing.\n",
686 get_pipe_name_from_syntax(talloc_tos(),
692 DEBUG(5, ("pipe_ntlmssp_verify_final: OK: user: %s domain: %s "
693 "workstation: %s\n", a
->ntlmssp_state
->user
,
694 a
->ntlmssp_state
->domain
, a
->ntlmssp_state
->workstation
));
696 if (a
->server_info
->ptok
== NULL
) {
697 DEBUG(1,("Error: Authmodule failed to provide nt_user_token\n"));
701 TALLOC_FREE(p
->server_info
);
703 p
->server_info
= copy_serverinfo(p
, a
->server_info
);
704 if (p
->server_info
== NULL
) {
705 DEBUG(0, ("copy_serverinfo failed\n"));
710 * We're an authenticated bind over smb, so the session key needs to
711 * be set to "SystemLibraryDTC". Weird, but this is what Windows
712 * does. See the RPC-SAMBA3SESSIONKEY.
715 session_key
= generic_session_key();
716 if (session_key
.data
== NULL
) {
720 ret
= server_info_set_session_key(p
->server_info
, session_key
);
722 data_blob_free(&session_key
);
727 /*******************************************************************
728 The switch table for the pipe names and the functions to handle them.
729 *******************************************************************/
736 struct ndr_syntax_id rpc_interface
;
737 const struct api_struct
*cmds
;
741 static struct rpc_table
*rpc_lookup
;
742 static int rpc_lookup_size
;
744 /*******************************************************************
745 This is the "stage3" NTLMSSP response after a bind request and reply.
746 *******************************************************************/
748 bool api_pipe_bind_auth3(pipes_struct
*p
, prs_struct
*rpc_in_p
)
750 RPC_HDR_AUTH auth_info
;
753 uint32_t auth_len
= p
->hdr
.auth_len
;
757 DEBUG(5,("api_pipe_bind_auth3: decode request. %d\n", __LINE__
));
760 DEBUG(0,("api_pipe_bind_auth3: No auth field sent !\n"));
764 /* 4 bytes padding. */
765 if (!prs_uint32("pad", rpc_in_p
, 0, &pad
)) {
766 DEBUG(0,("api_pipe_bind_auth3: unmarshall of 4 byte pad failed.\n"));
770 /* Ensure there's enough data for an authenticated request. */
771 if (RPC_HEADER_LEN
+ RPC_HDR_AUTH_LEN
+ auth_len
>
773 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len "
774 "%u is too large.\n",
775 (unsigned int)auth_len
));
780 * Decode the authentication verifier response.
783 /* Pull the auth header and the following data into a blob. */
784 /* NB. The offset of the auth_header is relative to the *end*
785 * of the packet, not the start. Also, the length of the
786 * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
787 * as the RPC header isn't included in rpc_in_p. */
788 if(!prs_set_offset(rpc_in_p
,
789 p
->hdr
.frag_len
- RPC_HEADER_LEN
-
790 RPC_HDR_AUTH_LEN
- auth_len
)) {
791 DEBUG(0,("api_pipe_bind_auth3: cannot move "
793 (unsigned int)(p
->hdr
.frag_len
-
794 RPC_HDR_AUTH_LEN
- auth_len
) ));
798 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
, rpc_in_p
, 0)) {
799 DEBUG(0,("api_pipe_bind_auth3: failed to "
800 "unmarshall RPC_HDR_AUTH.\n"));
804 /* We must NEVER look at auth_info->auth_pad_len here,
805 * as old Samba client code gets it wrong and sends it
809 if (auth_info
.auth_type
!= DCERPC_AUTH_TYPE_NTLMSSP
) {
810 DEBUG(0,("api_pipe_bind_auth3: incorrect auth type (%u).\n",
811 (unsigned int)auth_info
.auth_type
));
815 blob
= data_blob(NULL
,p
->hdr
.auth_len
);
817 if (!prs_copy_data_out((char *)blob
.data
, rpc_in_p
, p
->hdr
.auth_len
)) {
818 DEBUG(0,("api_pipe_bind_auth3: Failed to pull %u bytes - the response blob.\n",
819 (unsigned int)p
->hdr
.auth_len
));
824 * The following call actually checks the challenge/response data.
825 * for correctness against the given DOMAIN\user name.
828 if (!pipe_ntlmssp_verify_final(p
, &blob
)) {
832 data_blob_free(&blob
);
834 p
->pipe_bound
= True
;
840 data_blob_free(&blob
);
841 free_pipe_ntlmssp_auth_data(&p
->auth
);
842 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
847 /*******************************************************************
848 Marshall a bind_nak pdu.
849 *******************************************************************/
851 static bool setup_bind_nak(pipes_struct
*p
)
856 /* Free any memory in the current return data buffer. */
857 prs_mem_free(&p
->out_data
.rdata
);
860 * Marshall directly into the outgoing PDU space. We
861 * must do this as we need to set to the bind response
862 * header and are never sending more than one PDU here.
865 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
868 * Initialize a bind_nak header.
871 init_rpc_hdr(&nak_hdr
, DCERPC_PKT_BIND_NAK
, DCERPC_PFC_FLAG_FIRST
| DCERPC_PFC_FLAG_LAST
,
872 p
->hdr
.call_id
, RPC_HEADER_LEN
+ sizeof(uint16
), 0);
875 * Marshall the header into the outgoing PDU.
878 if(!smb_io_rpc_hdr("", &nak_hdr
, &p
->out_data
.frag
, 0)) {
879 DEBUG(0,("setup_bind_nak: marshalling of RPC_HDR failed.\n"));
880 prs_mem_free(&p
->out_data
.frag
);
885 * Now add the reject reason.
888 if(!prs_uint16("reject code", &p
->out_data
.frag
, 0, &zero
)) {
889 prs_mem_free(&p
->out_data
.frag
);
893 p
->out_data
.data_sent_length
= 0;
894 p
->out_data
.current_pdu_sent
= 0;
896 if (p
->auth
.auth_data_free_func
) {
897 (*p
->auth
.auth_data_free_func
)(&p
->auth
);
899 p
->auth
.auth_level
= DCERPC_AUTH_LEVEL_NONE
;
900 p
->auth
.auth_type
= PIPE_AUTH_TYPE_NONE
;
901 p
->pipe_bound
= False
;
906 /*******************************************************************
907 Marshall a fault pdu.
908 *******************************************************************/
910 bool setup_fault_pdu(pipes_struct
*p
, NTSTATUS status
)
913 RPC_HDR_RESP hdr_resp
;
914 RPC_HDR_FAULT fault_resp
;
916 /* Free any memory in the current return data buffer. */
917 prs_mem_free(&p
->out_data
.rdata
);
920 * Marshall directly into the outgoing PDU space. We
921 * must do this as we need to set to the bind response
922 * header and are never sending more than one PDU here.
925 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
928 * Initialize a fault header.
931 init_rpc_hdr(&fault_hdr
, DCERPC_PKT_FAULT
, DCERPC_PFC_FLAG_FIRST
| DCERPC_PFC_FLAG_LAST
| DCERPC_PFC_FLAG_DID_NOT_EXECUTE
,
932 p
->hdr
.call_id
, RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+ RPC_HDR_FAULT_LEN
, 0);
935 * Initialize the HDR_RESP and FAULT parts of the PDU.
938 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
940 fault_resp
.status
= status
;
941 fault_resp
.reserved
= 0;
944 * Marshall the header into the outgoing PDU.
947 if(!smb_io_rpc_hdr("", &fault_hdr
, &p
->out_data
.frag
, 0)) {
948 DEBUG(0,("setup_fault_pdu: marshalling of RPC_HDR failed.\n"));
949 prs_mem_free(&p
->out_data
.frag
);
953 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &p
->out_data
.frag
, 0)) {
954 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_RESP.\n"));
955 prs_mem_free(&p
->out_data
.frag
);
959 if(!smb_io_rpc_hdr_fault("fault", &fault_resp
, &p
->out_data
.frag
, 0)) {
960 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_FAULT.\n"));
961 prs_mem_free(&p
->out_data
.frag
);
965 p
->out_data
.data_sent_length
= 0;
966 p
->out_data
.current_pdu_sent
= 0;
972 /*******************************************************************
973 Marshall a cancel_ack pdu.
974 We should probably check the auth-verifier here.
975 *******************************************************************/
977 bool setup_cancel_ack_reply(pipes_struct
*p
, prs_struct
*rpc_in_p
)
979 prs_struct outgoing_pdu
;
980 RPC_HDR ack_reply_hdr
;
982 /* Free any memory in the current return data buffer. */
983 prs_mem_free(&p
->out_data
.rdata
);
986 * Marshall directly into the outgoing PDU space. We
987 * must do this as we need to set to the bind response
988 * header and are never sending more than one PDU here.
991 prs_init_empty( &outgoing_pdu
, p
->mem_ctx
, MARSHALL
);
992 prs_give_memory( &outgoing_pdu
, (char *)p
->out_data
.current_pdu
, sizeof(p
->out_data
.current_pdu
), False
);
995 * Initialize a cancel_ack header.
998 init_rpc_hdr(&ack_reply_hdr
, DCERPC_PKT_CANCEL_ACK
, DCERPC_PFC_FLAG_FIRST
| DCERPC_PFC_FLAG_LAST
,
999 p
->hdr
.call_id
, RPC_HEADER_LEN
, 0);
1002 * Marshall the header into the outgoing PDU.
1005 if(!smb_io_rpc_hdr("", &ack_reply_hdr
, &outgoing_pdu
, 0)) {
1006 DEBUG(0,("setup_cancel_ack_reply: marshalling of RPC_HDR failed.\n"));
1007 prs_mem_free(&outgoing_pdu
);
1011 p
->out_data
.data_sent_length
= 0;
1012 p
->out_data
.current_pdu_len
= prs_offset(&outgoing_pdu
);
1013 p
->out_data
.current_pdu_sent
= 0;
1015 prs_mem_free(&outgoing_pdu
);
1020 /*******************************************************************
1021 Ensure a bind request has the correct abstract & transfer interface.
1022 Used to reject unknown binds from Win2k.
1023 *******************************************************************/
1025 static bool check_bind_req(struct pipes_struct
*p
,
1026 struct ndr_syntax_id
* abstract
,
1027 struct ndr_syntax_id
* transfer
,
1031 struct pipe_rpc_fns
*context_fns
;
1033 DEBUG(3,("check_bind_req for %s\n",
1034 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
)));
1036 /* we have to check all now since win2k introduced a new UUID on the lsaprpc pipe */
1038 for (i
=0; i
<rpc_lookup_size
; i
++) {
1039 DEBUGADD(10, ("checking %s\n", rpc_lookup
[i
].pipe
.clnt
));
1040 if (ndr_syntax_id_equal(
1041 abstract
, &rpc_lookup
[i
].rpc_interface
)
1042 && ndr_syntax_id_equal(
1043 transfer
, &ndr_transfer_syntax
)) {
1048 if (i
== rpc_lookup_size
) {
1052 context_fns
= SMB_MALLOC_P(struct pipe_rpc_fns
);
1053 if (context_fns
== NULL
) {
1054 DEBUG(0,("check_bind_req: malloc() failed!\n"));
1058 context_fns
->cmds
= rpc_lookup
[i
].cmds
;
1059 context_fns
->n_cmds
= rpc_lookup
[i
].n_cmds
;
1060 context_fns
->context_id
= context_id
;
1062 /* add to the list of open contexts */
1064 DLIST_ADD( p
->contexts
, context_fns
);
1069 /*******************************************************************
1070 Register commands to an RPC pipe
1071 *******************************************************************/
1073 NTSTATUS
rpc_srv_register(int version
, const char *clnt
, const char *srv
,
1074 const struct ndr_interface_table
*iface
,
1075 const struct api_struct
*cmds
, int size
)
1077 struct rpc_table
*rpc_entry
;
1079 if (!clnt
|| !srv
|| !cmds
) {
1080 return NT_STATUS_INVALID_PARAMETER
;
1083 if (version
!= SMB_RPC_INTERFACE_VERSION
) {
1084 DEBUG(0,("Can't register rpc commands!\n"
1085 "You tried to register a rpc module with SMB_RPC_INTERFACE_VERSION %d"
1086 ", while this version of samba uses version %d!\n",
1087 version
,SMB_RPC_INTERFACE_VERSION
));
1088 return NT_STATUS_OBJECT_TYPE_MISMATCH
;
1093 * we still need to make sure that don't register the same commands twice!!!
1098 /* We use a temporary variable because this call can fail and
1099 rpc_lookup will still be valid afterwards. It could then succeed if
1100 called again later */
1102 rpc_entry
= SMB_REALLOC_ARRAY_KEEP_OLD_ON_ERROR(rpc_lookup
, struct rpc_table
, rpc_lookup_size
);
1103 if (NULL
== rpc_entry
) {
1105 DEBUG(0, ("rpc_pipe_register_commands: memory allocation failed\n"));
1106 return NT_STATUS_NO_MEMORY
;
1108 rpc_lookup
= rpc_entry
;
1111 rpc_entry
= rpc_lookup
+ (rpc_lookup_size
- 1);
1112 ZERO_STRUCTP(rpc_entry
);
1113 rpc_entry
->pipe
.clnt
= SMB_STRDUP(clnt
);
1114 rpc_entry
->pipe
.srv
= SMB_STRDUP(srv
);
1115 rpc_entry
->rpc_interface
= iface
->syntax_id
;
1116 rpc_entry
->cmds
= cmds
;
1117 rpc_entry
->n_cmds
= size
;
1119 return NT_STATUS_OK
;
1123 * Is a named pipe known?
1124 * @param[in] cli_filename The pipe name requested by the client
1125 * @result Do we want to serve this?
1127 bool is_known_pipename(const char *cli_filename
, struct ndr_syntax_id
*syntax
)
1129 const char *pipename
= cli_filename
;
1133 if (strnequal(pipename
, "\\PIPE\\", 6)) {
1137 if (*pipename
== '\\') {
1141 if (lp_disable_spoolss() && strequal(pipename
, "spoolss")) {
1142 DEBUG(10, ("refusing spoolss access\n"));
1146 for (i
=0; i
<rpc_lookup_size
; i
++) {
1147 if (strequal(pipename
, rpc_lookup
[i
].pipe
.clnt
)) {
1148 *syntax
= rpc_lookup
[i
].rpc_interface
;
1153 status
= smb_probe_module("rpc", pipename
);
1154 if (!NT_STATUS_IS_OK(status
)) {
1155 DEBUG(10, ("is_known_pipename: %s unknown\n", cli_filename
));
1158 DEBUG(10, ("is_known_pipename: %s loaded dynamically\n", pipename
));
1161 * Scan the list again for the interface id
1164 for (i
=0; i
<rpc_lookup_size
; i
++) {
1165 if (strequal(pipename
, rpc_lookup
[i
].pipe
.clnt
)) {
1166 *syntax
= rpc_lookup
[i
].rpc_interface
;
1171 DEBUG(10, ("is_known_pipename: pipe %s did not register itself!\n",
1177 /*******************************************************************
1178 Handle a SPNEGO krb5 bind auth.
1179 *******************************************************************/
1181 static bool pipe_spnego_auth_bind_kerberos(pipes_struct
*p
, prs_struct
*rpc_in_p
, RPC_HDR_AUTH
*pauth_info
,
1182 DATA_BLOB
*psecblob
, prs_struct
*pout_auth
)
1187 /*******************************************************************
1188 Handle the first part of a SPNEGO bind auth.
1189 *******************************************************************/
1191 static bool pipe_spnego_auth_bind_negotiate(pipes_struct
*p
, prs_struct
*rpc_in_p
,
1192 uint32_t ss_padding_len
,
1193 RPC_HDR_AUTH
*pauth_info
, prs_struct
*pout_auth
)
1199 char *OIDs
[ASN1_MAX_OIDS
];
1202 bool got_kerberos_mechanism
= false;
1203 AUTH_NTLMSSP_STATE
*a
= NULL
;
1204 RPC_HDR_AUTH auth_info
;
1206 ZERO_STRUCT(secblob
);
1208 ZERO_STRUCT(response
);
1210 /* Grab the SPNEGO blob. */
1211 blob
= data_blob(NULL
,p
->hdr
.auth_len
);
1213 if (!prs_copy_data_out((char *)blob
.data
, rpc_in_p
, p
->hdr
.auth_len
)) {
1214 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to pull %u bytes - the SPNEGO auth header.\n",
1215 (unsigned int)p
->hdr
.auth_len
));
1219 if (blob
.data
[0] != ASN1_APPLICATION(0)) {
1223 /* parse out the OIDs and the first sec blob */
1224 if (!parse_negTokenTarg(blob
, OIDs
, &secblob
)) {
1225 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to parse the security blob.\n"));
1229 if (strcmp(OID_KERBEROS5
, OIDs
[0]) == 0 || strcmp(OID_KERBEROS5_OLD
, OIDs
[0]) == 0) {
1230 got_kerberos_mechanism
= true;
1233 for (i
=0;OIDs
[i
];i
++) {
1234 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got OID %s\n", OIDs
[i
]));
1235 TALLOC_FREE(OIDs
[i
]);
1237 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got secblob of size %lu\n", (unsigned long)secblob
.length
));
1239 if ( got_kerberos_mechanism
&& ((lp_security()==SEC_ADS
) || USE_KERBEROS_KEYTAB
) ) {
1240 bool ret
= pipe_spnego_auth_bind_kerberos(p
, rpc_in_p
, pauth_info
, &secblob
, pout_auth
);
1241 data_blob_free(&secblob
);
1242 data_blob_free(&blob
);
1246 if (p
->auth
.auth_type
== PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
&& p
->auth
.a_u
.auth_ntlmssp_state
) {
1247 /* Free any previous auth type. */
1248 free_pipe_ntlmssp_auth_data(&p
->auth
);
1251 if (!got_kerberos_mechanism
) {
1252 /* Initialize the NTLM engine. */
1253 status
= auth_ntlmssp_start(&a
);
1254 if (!NT_STATUS_IS_OK(status
)) {
1259 * Pass the first security blob of data to it.
1260 * This can return an error or NT_STATUS_MORE_PROCESSING_REQUIRED
1261 * which means we need another packet to complete the bind.
1264 status
= auth_ntlmssp_update(a
, secblob
, &chal
);
1266 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
1267 DEBUG(3,("pipe_spnego_auth_bind_negotiate: auth_ntlmssp_update failed.\n"));
1271 /* Generate the response blob we need for step 2 of the bind. */
1272 response
= spnego_gen_auth_response(&chal
, status
, OID_NTLMSSP
);
1275 * SPNEGO negotiate down to NTLMSSP. The subsequent
1276 * code to process follow-up packets is not complete
1279 response
= spnego_gen_auth_response(NULL
,
1280 NT_STATUS_MORE_PROCESSING_REQUIRED
,
1284 /* auth_pad_len will be handled by the caller */
1286 /* Copy the blob into the pout_auth parse struct */
1287 init_rpc_hdr_auth(&auth_info
, DCERPC_AUTH_TYPE_SPNEGO
,
1288 pauth_info
->auth_level
, ss_padding_len
, 1);
1289 if(!smb_io_rpc_hdr_auth("", &auth_info
, pout_auth
, 0)) {
1290 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of RPC_HDR_AUTH failed.\n"));
1294 if (!prs_copy_data_in(pout_auth
, (char *)response
.data
, response
.length
)) {
1295 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of data blob failed.\n"));
1299 p
->auth
.a_u
.auth_ntlmssp_state
= a
;
1300 p
->auth
.auth_data_free_func
= &free_pipe_ntlmssp_auth_data
;
1301 p
->auth
.auth_type
= PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
;
1303 data_blob_free(&blob
);
1304 data_blob_free(&secblob
);
1305 data_blob_free(&chal
);
1306 data_blob_free(&response
);
1308 /* We can't set pipe_bound True yet - we need an RPC_ALTER_CONTEXT response packet... */
1313 data_blob_free(&blob
);
1314 data_blob_free(&secblob
);
1315 data_blob_free(&chal
);
1316 data_blob_free(&response
);
1318 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
1323 /*******************************************************************
1324 Handle the second part of a SPNEGO bind auth.
1325 *******************************************************************/
1327 static bool pipe_spnego_auth_bind_continue(pipes_struct
*p
, prs_struct
*rpc_in_p
,
1328 uint32_t ss_padding_len
,
1329 RPC_HDR_AUTH
*pauth_info
, prs_struct
*pout_auth
)
1331 RPC_HDR_AUTH auth_info
;
1332 DATA_BLOB spnego_blob
;
1333 DATA_BLOB auth_blob
;
1334 DATA_BLOB auth_reply
;
1336 AUTH_NTLMSSP_STATE
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
1338 ZERO_STRUCT(spnego_blob
);
1339 ZERO_STRUCT(auth_blob
);
1340 ZERO_STRUCT(auth_reply
);
1341 ZERO_STRUCT(response
);
1344 * NB. If we've negotiated down from krb5 to NTLMSSP we'll currently
1345 * fail here as 'a' == NULL.
1347 if (p
->auth
.auth_type
!= PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
|| !a
) {
1348 DEBUG(0,("pipe_spnego_auth_bind_continue: not in NTLMSSP auth state.\n"));
1352 /* Grab the SPNEGO blob. */
1353 spnego_blob
= data_blob(NULL
,p
->hdr
.auth_len
);
1355 if (!prs_copy_data_out((char *)spnego_blob
.data
, rpc_in_p
, p
->hdr
.auth_len
)) {
1356 DEBUG(0,("pipe_spnego_auth_bind_continue: Failed to pull %u bytes - the SPNEGO auth header.\n",
1357 (unsigned int)p
->hdr
.auth_len
));
1361 if (spnego_blob
.data
[0] != ASN1_CONTEXT(1)) {
1362 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob type.\n"));
1366 if (!spnego_parse_auth(spnego_blob
, &auth_blob
)) {
1367 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob.\n"));
1372 * The following call actually checks the challenge/response data.
1373 * for correctness against the given DOMAIN\user name.
1376 if (!pipe_ntlmssp_verify_final(p
, &auth_blob
)) {
1380 data_blob_free(&spnego_blob
);
1381 data_blob_free(&auth_blob
);
1383 /* Generate the spnego "accept completed" blob - no incoming data. */
1384 response
= spnego_gen_auth_response(&auth_reply
, NT_STATUS_OK
, OID_NTLMSSP
);
1386 /* FIXME - add auth_pad_len here ! */
1388 /* Copy the blob into the pout_auth parse struct */
1389 init_rpc_hdr_auth(&auth_info
, DCERPC_AUTH_TYPE_SPNEGO
,
1390 pauth_info
->auth_level
, ss_padding_len
, 1);
1391 if(!smb_io_rpc_hdr_auth("", &auth_info
, pout_auth
, 0)) {
1392 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of RPC_HDR_AUTH failed.\n"));
1396 if (!prs_copy_data_in(pout_auth
, (char *)response
.data
, response
.length
)) {
1397 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of data blob failed.\n"));
1401 data_blob_free(&auth_reply
);
1402 data_blob_free(&response
);
1404 p
->pipe_bound
= True
;
1410 data_blob_free(&spnego_blob
);
1411 data_blob_free(&auth_blob
);
1412 data_blob_free(&auth_reply
);
1413 data_blob_free(&response
);
1415 free_pipe_ntlmssp_auth_data(&p
->auth
);
1416 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
1421 /*******************************************************************
1422 Handle an schannel bind auth.
1423 *******************************************************************/
1425 static bool pipe_schannel_auth_bind(pipes_struct
*p
, prs_struct
*rpc_in_p
,
1426 uint32_t ss_padding_len
,
1427 RPC_HDR_AUTH
*pauth_info
, prs_struct
*pout_auth
)
1429 RPC_HDR_AUTH auth_info
;
1430 struct NL_AUTH_MESSAGE neg
;
1431 struct NL_AUTH_MESSAGE reply
;
1434 struct netlogon_creds_CredentialState
*creds
;
1435 DATA_BLOB session_key
;
1436 enum ndr_err_code ndr_err
;
1439 blob
= data_blob_const(prs_data_p(rpc_in_p
) + prs_offset(rpc_in_p
),
1440 prs_data_size(rpc_in_p
));
1442 ndr_err
= ndr_pull_struct_blob(&blob
, talloc_tos(), NULL
, &neg
,
1443 (ndr_pull_flags_fn_t
)ndr_pull_NL_AUTH_MESSAGE
);
1444 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
1445 DEBUG(0,("pipe_schannel_auth_bind: Could not unmarshal SCHANNEL auth neg\n"));
1449 if (DEBUGLEVEL
>= 10) {
1450 NDR_PRINT_DEBUG(NL_AUTH_MESSAGE
, &neg
);
1453 if (!(neg
.Flags
& NL_FLAG_OEM_NETBIOS_COMPUTER_NAME
)) {
1454 DEBUG(0,("pipe_schannel_auth_bind: Did not receive netbios computer name\n"));
1459 * The neg.oem_netbios_computer.a key here must match the remote computer name
1460 * given in the DOM_CLNT_SRV.uni_comp_name used on all netlogon pipe
1461 * operations that use credentials.
1465 status
= schannel_fetch_session_key(p
,
1466 neg
.oem_netbios_computer
.a
,
1470 if (!NT_STATUS_IS_OK(status
)) {
1471 DEBUG(0, ("pipe_schannel_auth_bind: Attempt to bind using schannel without successful serverauth2\n"));
1475 p
->auth
.a_u
.schannel_auth
= talloc(p
, struct schannel_state
);
1476 if (!p
->auth
.a_u
.schannel_auth
) {
1481 p
->auth
.a_u
.schannel_auth
->state
= SCHANNEL_STATE_START
;
1482 p
->auth
.a_u
.schannel_auth
->seq_num
= 0;
1483 p
->auth
.a_u
.schannel_auth
->initiator
= false;
1484 p
->auth
.a_u
.schannel_auth
->creds
= creds
;
1487 * JRA. Should we also copy the schannel session key into the pipe session key p->session_key
1488 * here ? We do that for NTLMSSP, but the session key is already set up from the vuser
1489 * struct of the person who opened the pipe. I need to test this further. JRA.
1491 * VL. As we are mapping this to guest set the generic key
1492 * "SystemLibraryDTC" key here. It's a bit difficult to test against
1493 * W2k3, as it does not allow schannel binds against SAMR and LSA
1497 session_key
= generic_session_key();
1498 if (session_key
.data
== NULL
) {
1499 DEBUG(0, ("pipe_schannel_auth_bind: Could not alloc session"
1504 ret
= server_info_set_session_key(p
->server_info
, session_key
);
1506 data_blob_free(&session_key
);
1509 DEBUG(0, ("server_info_set_session_key failed\n"));
1513 init_rpc_hdr_auth(&auth_info
, DCERPC_AUTH_TYPE_SCHANNEL
,
1514 pauth_info
->auth_level
, ss_padding_len
, 1);
1515 if(!smb_io_rpc_hdr_auth("", &auth_info
, pout_auth
, 0)) {
1516 DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1520 /*** SCHANNEL verifier ***/
1522 reply
.MessageType
= NL_NEGOTIATE_RESPONSE
;
1524 reply
.Buffer
.dummy
= 5; /* ??? actually I don't think
1525 * this has any meaning
1528 ndr_err
= ndr_push_struct_blob(&blob
, talloc_tos(), NULL
, &reply
,
1529 (ndr_push_flags_fn_t
)ndr_push_NL_AUTH_MESSAGE
);
1530 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
1531 DEBUG(0,("Failed to marshall NL_AUTH_MESSAGE.\n"));
1535 if (DEBUGLEVEL
>= 10) {
1536 NDR_PRINT_DEBUG(NL_AUTH_MESSAGE
, &reply
);
1539 if (!prs_copy_data_in(pout_auth
, (const char *)blob
.data
, blob
.length
)) {
1543 DEBUG(10,("pipe_schannel_auth_bind: schannel auth: domain [%s] myname [%s]\n",
1544 neg
.oem_netbios_domain
.a
, neg
.oem_netbios_computer
.a
));
1546 /* We're finished with this bind - no more packets. */
1547 p
->auth
.auth_data_free_func
= NULL
;
1548 p
->auth
.auth_type
= PIPE_AUTH_TYPE_SCHANNEL
;
1550 p
->pipe_bound
= True
;
1555 /*******************************************************************
1556 Handle an NTLMSSP bind auth.
1557 *******************************************************************/
1559 static bool pipe_ntlmssp_auth_bind(pipes_struct
*p
, prs_struct
*rpc_in_p
,
1560 uint32_t ss_padding_len
,
1561 RPC_HDR_AUTH
*pauth_info
, prs_struct
*pout_auth
)
1563 RPC_HDR_AUTH auth_info
;
1567 AUTH_NTLMSSP_STATE
*a
= NULL
;
1570 ZERO_STRUCT(response
);
1572 /* Grab the NTLMSSP blob. */
1573 blob
= data_blob(NULL
,p
->hdr
.auth_len
);
1575 if (!prs_copy_data_out((char *)blob
.data
, rpc_in_p
, p
->hdr
.auth_len
)) {
1576 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to pull %u bytes - the NTLM auth header.\n",
1577 (unsigned int)p
->hdr
.auth_len
));
1581 if (strncmp((char *)blob
.data
, "NTLMSSP", 7) != 0) {
1582 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to read NTLMSSP in blob\n"));
1586 /* We have an NTLMSSP blob. */
1587 status
= auth_ntlmssp_start(&a
);
1588 if (!NT_STATUS_IS_OK(status
)) {
1589 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_start failed: %s\n",
1590 nt_errstr(status
) ));
1594 status
= auth_ntlmssp_update(a
, blob
, &response
);
1595 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
1596 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_update failed: %s\n",
1597 nt_errstr(status
) ));
1601 data_blob_free(&blob
);
1603 /* Copy the blob into the pout_auth parse struct */
1604 init_rpc_hdr_auth(&auth_info
, DCERPC_AUTH_TYPE_NTLMSSP
,
1605 pauth_info
->auth_level
, ss_padding_len
, 1);
1606 if(!smb_io_rpc_hdr_auth("", &auth_info
, pout_auth
, 0)) {
1607 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1611 if (!prs_copy_data_in(pout_auth
, (char *)response
.data
, response
.length
)) {
1612 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of data blob failed.\n"));
1616 p
->auth
.a_u
.auth_ntlmssp_state
= a
;
1617 p
->auth
.auth_data_free_func
= &free_pipe_ntlmssp_auth_data
;
1618 p
->auth
.auth_type
= PIPE_AUTH_TYPE_NTLMSSP
;
1620 data_blob_free(&blob
);
1621 data_blob_free(&response
);
1623 DEBUG(10,("pipe_ntlmssp_auth_bind: NTLMSSP auth started\n"));
1625 /* We can't set pipe_bound True yet - we need an DCERPC_PKT_AUTH3 response packet... */
1630 data_blob_free(&blob
);
1631 data_blob_free(&response
);
1633 free_pipe_ntlmssp_auth_data(&p
->auth
);
1634 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
1638 /*******************************************************************
1639 Respond to a pipe bind request.
1640 *******************************************************************/
1642 bool api_pipe_bind_req(pipes_struct
*p
, prs_struct
*rpc_in_p
)
1646 RPC_HDR_AUTH auth_info
;
1648 fstring ack_pipe_name
;
1649 prs_struct out_hdr_ba
;
1650 prs_struct out_auth
;
1653 unsigned int auth_type
= DCERPC_AUTH_TYPE_NONE
;
1654 uint32_t ss_padding_len
= 0;
1656 /* No rebinds on a bound pipe - use alter context. */
1657 if (p
->pipe_bound
) {
1658 DEBUG(2,("api_pipe_bind_req: rejecting bind request on bound "
1660 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
)));
1661 return setup_bind_nak(p
);
1664 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
1667 * Marshall directly into the outgoing PDU space. We
1668 * must do this as we need to set to the bind response
1669 * header and are never sending more than one PDU here.
1673 * Setup the memory to marshall the ba header, and the
1677 if(!prs_init(&out_hdr_ba
, 1024, p
->mem_ctx
, MARSHALL
)) {
1678 DEBUG(0,("api_pipe_bind_req: malloc out_hdr_ba failed.\n"));
1679 prs_mem_free(&p
->out_data
.frag
);
1683 if(!prs_init(&out_auth
, 1024, p
->mem_ctx
, MARSHALL
)) {
1684 DEBUG(0,("api_pipe_bind_req: malloc out_auth failed.\n"));
1685 prs_mem_free(&p
->out_data
.frag
);
1686 prs_mem_free(&out_hdr_ba
);
1690 DEBUG(5,("api_pipe_bind_req: decode request. %d\n", __LINE__
));
1692 ZERO_STRUCT(hdr_rb
);
1694 /* decode the bind request */
1696 if(!smb_io_rpc_hdr_rb("", &hdr_rb
, rpc_in_p
, 0)) {
1697 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_RB "
1702 if (hdr_rb
.num_contexts
== 0) {
1703 DEBUG(0, ("api_pipe_bind_req: no rpc contexts around\n"));
1708 * Try and find the correct pipe name to ensure
1709 * that this is a pipe name we support.
1712 for (i
= 0; i
< rpc_lookup_size
; i
++) {
1713 if (ndr_syntax_id_equal(&rpc_lookup
[i
].rpc_interface
,
1714 &hdr_rb
.rpc_context
[0].abstract
)) {
1715 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1716 rpc_lookup
[i
].pipe
.clnt
, rpc_lookup
[i
].pipe
.srv
));
1721 if (i
== rpc_lookup_size
) {
1724 status
= smb_probe_module(
1725 "rpc", get_pipe_name_from_syntax(
1727 &hdr_rb
.rpc_context
[0].abstract
));
1729 if (NT_STATUS_IS_ERR(status
)) {
1730 DEBUG(3,("api_pipe_bind_req: Unknown pipe name %s in bind request.\n",
1731 get_pipe_name_from_syntax(
1733 &hdr_rb
.rpc_context
[0].abstract
)));
1734 prs_mem_free(&p
->out_data
.frag
);
1735 prs_mem_free(&out_hdr_ba
);
1736 prs_mem_free(&out_auth
);
1738 return setup_bind_nak(p
);
1741 for (i
= 0; i
< rpc_lookup_size
; i
++) {
1742 if (strequal(rpc_lookup
[i
].pipe
.clnt
,
1743 get_pipe_name_from_syntax(talloc_tos(),
1745 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1746 rpc_lookup
[i
].pipe
.clnt
, rpc_lookup
[i
].pipe
.srv
));
1751 if (i
== rpc_lookup_size
) {
1752 DEBUG(0, ("module %s doesn't provide functions for "
1754 get_pipe_name_from_syntax(talloc_tos(),
1756 get_pipe_name_from_syntax(talloc_tos(),
1762 /* name has to be \PIPE\xxxxx */
1763 fstrcpy(ack_pipe_name
, "\\PIPE\\");
1764 fstrcat(ack_pipe_name
, rpc_lookup
[i
].pipe
.srv
);
1766 DEBUG(5,("api_pipe_bind_req: make response. %d\n", __LINE__
));
1768 assoc_gid
= hdr_rb
.bba
.assoc_gid
? hdr_rb
.bba
.assoc_gid
: 0x53f0;
1771 * Create the bind response struct.
1774 /* If the requested abstract synt uuid doesn't match our client pipe,
1775 reject the bind_ack & set the transfer interface synt to all 0's,
1776 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1778 Needed when adding entries to a DACL from NT5 - SK */
1780 if(check_bind_req(p
, &hdr_rb
.rpc_context
[0].abstract
, &hdr_rb
.rpc_context
[0].transfer
[0],
1781 hdr_rb
.rpc_context
[0].context_id
)) {
1782 init_rpc_hdr_ba(&hdr_ba
,
1783 RPC_MAX_PDU_FRAG_LEN
,
1784 RPC_MAX_PDU_FRAG_LEN
,
1788 &hdr_rb
.rpc_context
[0].transfer
[0]);
1790 /* Rejection reason: abstract syntax not supported */
1791 init_rpc_hdr_ba(&hdr_ba
, RPC_MAX_PDU_FRAG_LEN
,
1792 RPC_MAX_PDU_FRAG_LEN
, assoc_gid
,
1793 ack_pipe_name
, 0x1, 0x2, 0x1,
1794 &null_ndr_syntax_id
);
1795 p
->pipe_bound
= False
;
1802 if(!smb_io_rpc_hdr_ba("", &hdr_ba
, &out_hdr_ba
, 0)) {
1803 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR_BA failed.\n"));
1808 * Check if this is an authenticated bind request.
1811 if (p
->hdr
.auth_len
) {
1813 * Decode the authentication verifier.
1816 /* Work out any padding needed before the auth footer. */
1817 if ((RPC_HEADER_LEN
+ prs_offset(&out_hdr_ba
)) % SERVER_NDR_PADDING_SIZE
) {
1818 ss_padding_len
= SERVER_NDR_PADDING_SIZE
-
1819 ((RPC_HEADER_LEN
+ prs_offset(&out_hdr_ba
)) % SERVER_NDR_PADDING_SIZE
);
1820 DEBUG(10,("api_pipe_bind_req: auth pad_len = %u\n",
1821 (unsigned int)ss_padding_len
));
1824 /* Quick length check. Won't catch a bad auth footer,
1825 * prevents overrun. */
1827 if (p
->hdr
.frag_len
< RPC_HEADER_LEN
+ RPC_HDR_AUTH_LEN
+ p
->hdr
.auth_len
) {
1828 DEBUG(0,("api_pipe_bind_req: auth_len (%u) "
1829 "too long for fragment %u.\n",
1830 (unsigned int)p
->hdr
.auth_len
,
1831 (unsigned int)p
->hdr
.frag_len
));
1835 /* Pull the auth header and the following data into a blob. */
1836 /* NB. The offset of the auth_header is relative to the *end*
1837 * of the packet, not the start. Also, the length of the
1838 * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
1839 * as the RPC header isn't included in rpc_in_p. */
1840 if(!prs_set_offset(rpc_in_p
,
1841 p
->hdr
.frag_len
- RPC_HEADER_LEN
-
1842 RPC_HDR_AUTH_LEN
- p
->hdr
.auth_len
)) {
1843 DEBUG(0,("api_pipe_bind_req: cannot move "
1845 (unsigned int)(p
->hdr
.frag_len
-
1846 RPC_HDR_AUTH_LEN
- p
->hdr
.auth_len
) ));
1850 if(!smb_io_rpc_hdr_auth("", &auth_info
, rpc_in_p
, 0)) {
1851 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1855 auth_type
= auth_info
.auth_type
;
1857 /* Work out if we have to sign or seal etc. */
1858 switch (auth_info
.auth_level
) {
1859 case DCERPC_AUTH_LEVEL_INTEGRITY
:
1860 p
->auth
.auth_level
= DCERPC_AUTH_LEVEL_INTEGRITY
;
1862 case DCERPC_AUTH_LEVEL_PRIVACY
:
1863 p
->auth
.auth_level
= DCERPC_AUTH_LEVEL_PRIVACY
;
1866 DEBUG(0,("api_pipe_bind_req: unexpected auth level (%u).\n",
1867 (unsigned int)auth_info
.auth_level
));
1871 ZERO_STRUCT(auth_info
);
1875 case DCERPC_AUTH_TYPE_NTLMSSP
:
1876 if (!pipe_ntlmssp_auth_bind(p
, rpc_in_p
,
1877 ss_padding_len
, &auth_info
, &out_auth
)) {
1883 case DCERPC_AUTH_TYPE_SCHANNEL
:
1884 if (!pipe_schannel_auth_bind(p
, rpc_in_p
,
1885 ss_padding_len
, &auth_info
, &out_auth
)) {
1890 case DCERPC_AUTH_TYPE_SPNEGO
:
1891 if (!pipe_spnego_auth_bind_negotiate(p
, rpc_in_p
,
1892 ss_padding_len
, &auth_info
, &out_auth
)) {
1897 case DCERPC_AUTH_TYPE_NONE
:
1898 /* Unauthenticated bind request. */
1899 /* We're finished - no more packets. */
1900 p
->auth
.auth_type
= PIPE_AUTH_TYPE_NONE
;
1901 /* We must set the pipe auth_level here also. */
1902 p
->auth
.auth_level
= DCERPC_AUTH_LEVEL_NONE
;
1903 p
->pipe_bound
= True
;
1904 /* The session key was initialized from the SMB
1905 * session in make_internal_rpc_pipe_p */
1910 DEBUG(0,("api_pipe_bind_req: unknown auth type %x requested.\n", auth_type
));
1914 * Create the header, now we know the length.
1917 if (prs_offset(&out_auth
)) {
1918 auth_len
= prs_offset(&out_auth
) - RPC_HDR_AUTH_LEN
;
1921 init_rpc_hdr(&p
->hdr
, DCERPC_PKT_BIND_ACK
, DCERPC_PFC_FLAG_FIRST
| DCERPC_PFC_FLAG_LAST
,
1923 RPC_HEADER_LEN
+ prs_offset(&out_hdr_ba
) +
1924 ss_padding_len
+ prs_offset(&out_auth
),
1928 * Marshall the header into the outgoing PDU.
1931 if(!smb_io_rpc_hdr("", &p
->hdr
, &p
->out_data
.frag
, 0)) {
1932 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR failed.\n"));
1937 * Now add the RPC_HDR_BA and any auth needed.
1940 if(!prs_append_prs_data(&p
->out_data
.frag
, &out_hdr_ba
)) {
1941 DEBUG(0,("api_pipe_bind_req: append of RPC_HDR_BA failed.\n"));
1946 if (ss_padding_len
) {
1947 char pad
[SERVER_NDR_PADDING_SIZE
];
1948 memset(pad
, '\0', SERVER_NDR_PADDING_SIZE
);
1949 if (!prs_copy_data_in(&p
->out_data
.frag
, pad
,
1951 DEBUG(0,("api_pipe_bind_req: failed to add %u "
1952 "bytes of pad data.\n",
1953 (unsigned int)ss_padding_len
));
1958 if (!prs_append_prs_data( &p
->out_data
.frag
, &out_auth
)) {
1959 DEBUG(0,("api_pipe_bind_req: append of auth info failed.\n"));
1965 * Setup the lengths for the initial reply.
1968 p
->out_data
.data_sent_length
= 0;
1969 p
->out_data
.current_pdu_sent
= 0;
1971 prs_mem_free(&out_hdr_ba
);
1972 prs_mem_free(&out_auth
);
1978 prs_mem_free(&p
->out_data
.frag
);
1979 prs_mem_free(&out_hdr_ba
);
1980 prs_mem_free(&out_auth
);
1981 return setup_bind_nak(p
);
1984 /****************************************************************************
1985 Deal with an alter context call. Can be third part of 3 leg auth request for
1987 ****************************************************************************/
1989 bool api_pipe_alter_context(pipes_struct
*p
, prs_struct
*rpc_in_p
)
1993 RPC_HDR_AUTH auth_info
;
1995 fstring ack_pipe_name
;
1996 prs_struct out_hdr_ba
;
1997 prs_struct out_auth
;
1999 uint32_t ss_padding_len
= 0;
2001 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
2004 * Marshall directly into the outgoing PDU space. We
2005 * must do this as we need to set to the bind response
2006 * header and are never sending more than one PDU here.
2010 * Setup the memory to marshall the ba header, and the
2014 if(!prs_init(&out_hdr_ba
, 1024, p
->mem_ctx
, MARSHALL
)) {
2015 DEBUG(0,("api_pipe_alter_context: malloc out_hdr_ba failed.\n"));
2016 prs_mem_free(&p
->out_data
.frag
);
2020 if(!prs_init(&out_auth
, 1024, p
->mem_ctx
, MARSHALL
)) {
2021 DEBUG(0,("api_pipe_alter_context: malloc out_auth failed.\n"));
2022 prs_mem_free(&p
->out_data
.frag
);
2023 prs_mem_free(&out_hdr_ba
);
2027 ZERO_STRUCT(hdr_rb
);
2029 DEBUG(5,("api_pipe_alter_context: decode request. %d\n", __LINE__
));
2031 /* decode the alter context request */
2032 if(!smb_io_rpc_hdr_rb("", &hdr_rb
, rpc_in_p
, 0)) {
2033 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_RB struct.\n"));
2037 /* secondary address CAN be NULL
2038 * as the specs say it's ignored.
2039 * It MUST be NULL to have the spoolss working.
2041 fstrcpy(ack_pipe_name
,"");
2043 DEBUG(5,("api_pipe_alter_context: make response. %d\n", __LINE__
));
2045 assoc_gid
= hdr_rb
.bba
.assoc_gid
? hdr_rb
.bba
.assoc_gid
: 0x53f0;
2048 * Create the bind response struct.
2051 /* If the requested abstract synt uuid doesn't match our client pipe,
2052 reject the bind_ack & set the transfer interface synt to all 0's,
2053 ver 0 (observed when NT5 attempts to bind to abstract interfaces
2055 Needed when adding entries to a DACL from NT5 - SK */
2057 if(check_bind_req(p
, &hdr_rb
.rpc_context
[0].abstract
, &hdr_rb
.rpc_context
[0].transfer
[0],
2058 hdr_rb
.rpc_context
[0].context_id
)) {
2059 init_rpc_hdr_ba(&hdr_ba
,
2060 RPC_MAX_PDU_FRAG_LEN
,
2061 RPC_MAX_PDU_FRAG_LEN
,
2065 &hdr_rb
.rpc_context
[0].transfer
[0]);
2067 /* Rejection reason: abstract syntax not supported */
2068 init_rpc_hdr_ba(&hdr_ba
, RPC_MAX_PDU_FRAG_LEN
,
2069 RPC_MAX_PDU_FRAG_LEN
, assoc_gid
,
2070 ack_pipe_name
, 0x1, 0x2, 0x1,
2071 &null_ndr_syntax_id
);
2072 p
->pipe_bound
= False
;
2079 if(!smb_io_rpc_hdr_ba("", &hdr_ba
, &out_hdr_ba
, 0)) {
2080 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR_BA failed.\n"));
2086 * Check if this is an authenticated alter context request.
2089 if (p
->hdr
.auth_len
!= 0) {
2091 * Decode the authentication verifier.
2094 /* Work out any padding needed before the auth footer. */
2095 if ((RPC_HEADER_LEN
+ prs_offset(&out_hdr_ba
)) % SERVER_NDR_PADDING_SIZE
) {
2096 ss_padding_len
= SERVER_NDR_PADDING_SIZE
-
2097 ((RPC_HEADER_LEN
+ prs_offset(&out_hdr_ba
)) % SERVER_NDR_PADDING_SIZE
);
2098 DEBUG(10,("api_pipe_alter_context: auth pad_len = %u\n",
2099 (unsigned int)ss_padding_len
));
2102 /* Quick length check. Won't catch a bad auth footer,
2103 * prevents overrun. */
2105 if (p
->hdr
.frag_len
< RPC_HEADER_LEN
+ RPC_HDR_AUTH_LEN
+ p
->hdr
.auth_len
) {
2106 DEBUG(0,("api_pipe_alter_context: auth_len (%u) "
2107 "too long for fragment %u.\n",
2108 (unsigned int)p
->hdr
.auth_len
,
2109 (unsigned int)p
->hdr
.frag_len
));
2113 /* Pull the auth header and the following data into a blob. */
2114 /* NB. The offset of the auth_header is relative to the *end*
2115 * of the packet, not the start. Also, the length of the
2116 * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
2117 * as the RPC header isn't included in rpc_in_p. */
2118 if(!prs_set_offset(rpc_in_p
,
2119 p
->hdr
.frag_len
- RPC_HEADER_LEN
-
2120 RPC_HDR_AUTH_LEN
- p
->hdr
.auth_len
)) {
2121 DEBUG(0,("api_alter_context: cannot move "
2123 (unsigned int)(p
->hdr
.frag_len
-
2124 RPC_HDR_AUTH_LEN
- p
->hdr
.auth_len
) ));
2128 if(!smb_io_rpc_hdr_auth("", &auth_info
, rpc_in_p
, 0)) {
2129 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_AUTH struct.\n"));
2134 * Currently only the SPNEGO auth type uses the alter ctx
2135 * response in place of the NTLMSSP auth3 type.
2138 if (auth_info
.auth_type
== DCERPC_AUTH_TYPE_SPNEGO
) {
2139 /* We can only finish if the pipe is unbound. */
2140 if (!p
->pipe_bound
) {
2141 if (!pipe_spnego_auth_bind_continue(p
, rpc_in_p
,
2142 ss_padding_len
, &auth_info
, &out_auth
)) {
2150 ZERO_STRUCT(auth_info
);
2153 * Create the header, now we know the length.
2156 if (prs_offset(&out_auth
)) {
2157 auth_len
= prs_offset(&out_auth
) - RPC_HDR_AUTH_LEN
;
2160 init_rpc_hdr(&p
->hdr
, DCERPC_PKT_ALTER_RESP
, DCERPC_PFC_FLAG_FIRST
| DCERPC_PFC_FLAG_LAST
,
2162 RPC_HEADER_LEN
+ prs_offset(&out_hdr_ba
) + prs_offset(&out_auth
),
2166 * Marshall the header into the outgoing PDU.
2169 if(!smb_io_rpc_hdr("", &p
->hdr
, &p
->out_data
.frag
, 0)) {
2170 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR failed.\n"));
2175 * Now add the RPC_HDR_BA and any auth needed.
2178 if(!prs_append_prs_data(&p
->out_data
.frag
, &out_hdr_ba
)) {
2179 DEBUG(0,("api_pipe_alter_context: append of RPC_HDR_BA failed.\n"));
2184 if (ss_padding_len
) {
2185 char pad
[SERVER_NDR_PADDING_SIZE
];
2186 memset(pad
, '\0', SERVER_NDR_PADDING_SIZE
);
2187 if (!prs_copy_data_in(&p
->out_data
.frag
, pad
,
2189 DEBUG(0,("api_pipe_alter_context: failed to add %u "
2190 "bytes of pad data.\n",
2191 (unsigned int)ss_padding_len
));
2196 if (!prs_append_prs_data( &p
->out_data
.frag
, &out_auth
)) {
2197 DEBUG(0,("api_pipe_alter_context: append of auth info failed.\n"));
2203 * Setup the lengths for the initial reply.
2206 p
->out_data
.data_sent_length
= 0;
2207 p
->out_data
.current_pdu_sent
= 0;
2209 prs_mem_free(&out_hdr_ba
);
2210 prs_mem_free(&out_auth
);
2216 prs_mem_free(&p
->out_data
.frag
);
2217 prs_mem_free(&out_hdr_ba
);
2218 prs_mem_free(&out_auth
);
2219 return setup_bind_nak(p
);
2222 /****************************************************************************
2223 Deal with NTLMSSP sign & seal processing on an RPC request.
2224 ****************************************************************************/
2226 bool api_pipe_ntlmssp_auth_process(pipes_struct
*p
, prs_struct
*rpc_in
,
2227 uint32
*p_ss_padding_len
, NTSTATUS
*pstatus
)
2229 RPC_HDR_AUTH auth_info
;
2230 uint32 auth_len
= p
->hdr
.auth_len
;
2231 uint32 save_offset
= prs_offset(rpc_in
);
2232 AUTH_NTLMSSP_STATE
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
2233 unsigned char *data
= NULL
;
2235 unsigned char *full_packet_data
= NULL
;
2236 size_t full_packet_data_len
;
2237 DATA_BLOB auth_blob
;
2239 *pstatus
= NT_STATUS_OK
;
2241 if (p
->auth
.auth_level
== DCERPC_AUTH_LEVEL_NONE
|| p
->auth
.auth_level
== DCERPC_AUTH_LEVEL_CONNECT
) {
2246 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2250 /* Ensure there's enough data for an authenticated request. */
2251 if (RPC_HEADER_LEN
+ RPC_HDR_REQ_LEN
+ RPC_HDR_AUTH_LEN
2252 + auth_len
> p
->hdr
.frag_len
) {
2253 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len %u is too large.\n",
2254 (unsigned int)auth_len
));
2255 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2260 * We need the full packet data + length (minus auth stuff) as well as the packet data + length
2261 * after the RPC header.
2262 * We need to pass in the full packet (minus auth len) to the NTLMSSP sign and check seal
2263 * functions as NTLMv2 checks the rpc headers also.
2264 * Both of these values include any auth_pad_len bytes.
2267 data
= (unsigned char *)(prs_data_p(rpc_in
) + RPC_HDR_REQ_LEN
);
2268 data_len
= (size_t)(p
->hdr
.frag_len
- RPC_HEADER_LEN
- RPC_HDR_REQ_LEN
- RPC_HDR_AUTH_LEN
- auth_len
);
2270 full_packet_data
= p
->in_data
.current_in_pdu
;
2271 full_packet_data_len
= p
->hdr
.frag_len
- auth_len
;
2273 /* Pull the auth header and the following data into a blob. */
2274 /* NB. The offset of the auth_header is relative to the *end*
2275 * of the packet, not the start. Also, the length of the
2276 * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
2277 * as the RPC header isn't included in rpc_in_p. */
2278 if(!prs_set_offset(rpc_in
,
2279 p
->hdr
.frag_len
- RPC_HEADER_LEN
-
2280 RPC_HDR_AUTH_LEN
- auth_len
)) {
2281 DEBUG(0,("api_pipe_ntlmssp_auth_process: cannot move "
2283 (unsigned int)(p
->hdr
.frag_len
-
2284 RPC_HDR_AUTH_LEN
- auth_len
) ));
2285 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2289 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
, rpc_in
, 0)) {
2290 DEBUG(0,("api_pipe_ntlmssp_auth_process: failed to "
2291 "unmarshall RPC_HDR_AUTH.\n"));
2292 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2296 /* Ensure auth_pad_len fits into the packet. */
2297 if (RPC_HEADER_LEN
+ RPC_HDR_REQ_LEN
+ auth_info
.auth_pad_len
+
2298 RPC_HDR_AUTH_LEN
+ auth_len
> p
->hdr
.frag_len
) {
2299 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_info.auth_pad_len "
2300 "too large (%u), auth_len (%u), frag_len = (%u).\n",
2301 (unsigned int)auth_info
.auth_pad_len
,
2302 (unsigned int)auth_len
,
2303 (unsigned int)p
->hdr
.frag_len
));
2304 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2308 auth_blob
.data
= (unsigned char *)prs_data_p(rpc_in
) + prs_offset(rpc_in
);
2309 auth_blob
.length
= auth_len
;
2311 switch (p
->auth
.auth_level
) {
2312 case DCERPC_AUTH_LEVEL_PRIVACY
:
2313 /* Data is encrypted. */
2314 *pstatus
= ntlmssp_unseal_packet(a
->ntlmssp_state
,
2317 full_packet_data_len
,
2319 if (!NT_STATUS_IS_OK(*pstatus
)) {
2323 case DCERPC_AUTH_LEVEL_INTEGRITY
:
2324 /* Data is signed. */
2325 *pstatus
= ntlmssp_check_packet(a
->ntlmssp_state
,
2328 full_packet_data_len
,
2330 if (!NT_STATUS_IS_OK(*pstatus
)) {
2335 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2340 * Return the current pointer to the data offset.
2343 if(!prs_set_offset(rpc_in
, save_offset
)) {
2344 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
2345 (unsigned int)save_offset
));
2346 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2351 * Remember the padding length. We must remove it from the real data
2352 * stream once the sign/seal is done.
2355 *p_ss_padding_len
= auth_info
.auth_pad_len
;
2360 /****************************************************************************
2361 Deal with schannel processing on an RPC request.
2362 ****************************************************************************/
2364 bool api_pipe_schannel_process(pipes_struct
*p
, prs_struct
*rpc_in
, uint32
*p_ss_padding_len
)
2368 uint32 save_offset
= prs_offset(rpc_in
);
2369 RPC_HDR_AUTH auth_info
;
2374 auth_len
= p
->hdr
.auth_len
;
2376 if (auth_len
< RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
||
2377 auth_len
> RPC_HEADER_LEN
+
2381 DEBUG(0,("Incorrect auth_len %u.\n", (unsigned int)auth_len
));
2386 * The following is that length of the data we must verify or unseal.
2387 * This doesn't include the RPC headers or the auth_len or the RPC_HDR_AUTH_LEN
2388 * preceeding the auth_data, but does include the auth_pad_len bytes.
2391 if (p
->hdr
.frag_len
< RPC_HEADER_LEN
+ RPC_HDR_REQ_LEN
+ RPC_HDR_AUTH_LEN
+ auth_len
) {
2392 DEBUG(0,("Incorrect frag %u, auth %u.\n",
2393 (unsigned int)p
->hdr
.frag_len
,
2394 (unsigned int)auth_len
));
2398 data_len
= p
->hdr
.frag_len
- RPC_HEADER_LEN
- RPC_HDR_REQ_LEN
-
2399 RPC_HDR_AUTH_LEN
- auth_len
;
2401 DEBUG(5,("data %d auth %d\n", data_len
, auth_len
));
2403 /* Pull the auth header and the following data into a blob. */
2404 /* NB. The offset of the auth_header is relative to the *end*
2405 * of the packet, not the start. Also, the length of the
2406 * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
2407 * as the RPC header isn't included in rpc_in_p. */
2408 if(!prs_set_offset(rpc_in
,
2409 p
->hdr
.frag_len
- RPC_HEADER_LEN
-
2410 RPC_HDR_AUTH_LEN
- auth_len
)) {
2411 DEBUG(0,("api_pipe_schannel_process: cannot move "
2413 (unsigned int)(p
->hdr
.frag_len
-
2414 RPC_HDR_AUTH_LEN
- auth_len
) ));
2418 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
, rpc_in
, 0)) {
2419 DEBUG(0,("api_pipe_schannel_process: failed to "
2420 "unmarshall RPC_HDR_AUTH.\n"));
2424 /* Ensure auth_pad_len fits into the packet. */
2425 if (RPC_HEADER_LEN
+ RPC_HDR_REQ_LEN
+ auth_info
.auth_pad_len
+
2426 RPC_HDR_AUTH_LEN
+ auth_len
> p
->hdr
.frag_len
) {
2427 DEBUG(0,("api_pipe_schannel_process: auth_info.auth_pad_len "
2428 "too large (%u), auth_len (%u), frag_len = (%u).\n",
2429 (unsigned int)auth_info
.auth_pad_len
,
2430 (unsigned int)auth_len
,
2431 (unsigned int)p
->hdr
.frag_len
));
2435 if (auth_info
.auth_type
!= DCERPC_AUTH_TYPE_SCHANNEL
) {
2436 DEBUG(0,("Invalid auth info %d on schannel\n",
2437 auth_info
.auth_type
));
2441 blob
= data_blob_const(prs_data_p(rpc_in
) + prs_offset(rpc_in
), auth_len
);
2443 if (DEBUGLEVEL
>= 10) {
2444 dump_NL_AUTH_SIGNATURE(talloc_tos(), &blob
);
2447 data
= (uint8_t *)prs_data_p(rpc_in
)+RPC_HDR_REQ_LEN
;
2449 switch (auth_info
.auth_level
) {
2450 case DCERPC_AUTH_LEVEL_PRIVACY
:
2451 status
= netsec_incoming_packet(p
->auth
.a_u
.schannel_auth
,
2458 case DCERPC_AUTH_LEVEL_INTEGRITY
:
2459 status
= netsec_incoming_packet(p
->auth
.a_u
.schannel_auth
,
2467 status
= NT_STATUS_INTERNAL_ERROR
;
2471 if (!NT_STATUS_IS_OK(status
)) {
2472 DEBUG(0,("failed to unseal packet: %s\n", nt_errstr(status
)));
2477 * Return the current pointer to the data offset.
2480 if(!prs_set_offset(rpc_in
, save_offset
)) {
2481 DEBUG(0,("failed to set offset back to %u\n",
2482 (unsigned int)save_offset
));
2487 * Remember the padding length. We must remove it from the real data
2488 * stream once the sign/seal is done.
2491 *p_ss_padding_len
= auth_info
.auth_pad_len
;
2496 /****************************************************************************
2497 Find the set of RPC functions associated with this context_id
2498 ****************************************************************************/
2500 static PIPE_RPC_FNS
* find_pipe_fns_by_context( PIPE_RPC_FNS
*list
, uint32 context_id
)
2502 PIPE_RPC_FNS
*fns
= NULL
;
2505 DEBUG(0,("find_pipe_fns_by_context: ERROR! No context list for pipe!\n"));
2509 for (fns
=list
; fns
; fns
=fns
->next
) {
2510 if ( fns
->context_id
== context_id
)
2516 /****************************************************************************
2518 ****************************************************************************/
2520 void free_pipe_rpc_context( PIPE_RPC_FNS
*list
)
2522 PIPE_RPC_FNS
*tmp
= list
;
2534 static bool api_rpcTNP(pipes_struct
*p
,
2535 const struct api_struct
*api_rpc_cmds
, int n_cmds
);
2537 /****************************************************************************
2538 Find the correct RPC function to call for this request.
2539 If the pipe is authenticated then become the correct UNIX user
2540 before doing the call.
2541 ****************************************************************************/
2543 bool api_pipe_request(pipes_struct
*p
)
2546 bool changed_user
= False
;
2547 PIPE_RPC_FNS
*pipe_fns
;
2549 if (p
->pipe_bound
&&
2550 ((p
->auth
.auth_type
== PIPE_AUTH_TYPE_NTLMSSP
) ||
2551 (p
->auth
.auth_type
== PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
))) {
2552 if(!become_authenticated_pipe_user(p
)) {
2553 prs_mem_free(&p
->out_data
.rdata
);
2556 changed_user
= True
;
2559 DEBUG(5, ("Requested \\PIPE\\%s\n",
2560 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
)));
2562 /* get the set of RPC functions for this context */
2564 pipe_fns
= find_pipe_fns_by_context(p
->contexts
, p
->hdr_req
.context_id
);
2567 TALLOC_CTX
*frame
= talloc_stackframe();
2568 ret
= api_rpcTNP(p
, pipe_fns
->cmds
, pipe_fns
->n_cmds
);
2572 DEBUG(0,("api_pipe_request: No rpc function table associated with context [%d] on pipe [%s]\n",
2573 p
->hdr_req
.context_id
,
2574 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
)));
2578 unbecome_authenticated_pipe_user();
2584 /*******************************************************************
2585 Calls the underlying RPC function for a named pipe.
2586 ********************************************************************/
2588 static bool api_rpcTNP(pipes_struct
*p
,
2589 const struct api_struct
*api_rpc_cmds
, int n_cmds
)
2592 uint32 offset1
, offset2
;
2594 /* interpret the command */
2595 DEBUG(4,("api_rpcTNP: %s op 0x%x - ",
2596 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
),
2599 if (DEBUGLEVEL
>= 50) {
2601 slprintf(name
, sizeof(name
)-1, "in_%s",
2602 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
));
2603 prs_dump(name
, p
->hdr_req
.opnum
, &p
->in_data
.data
);
2606 for (fn_num
= 0; fn_num
< n_cmds
; fn_num
++) {
2607 if (api_rpc_cmds
[fn_num
].opnum
== p
->hdr_req
.opnum
&& api_rpc_cmds
[fn_num
].fn
!= NULL
) {
2608 DEBUG(3,("api_rpcTNP: rpc command: %s\n", api_rpc_cmds
[fn_num
].name
));
2613 if (fn_num
== n_cmds
) {
2615 * For an unknown RPC just return a fault PDU but
2616 * return True to allow RPC's on the pipe to continue
2617 * and not put the pipe into fault state. JRA.
2619 DEBUG(4, ("unknown\n"));
2620 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
2624 offset1
= prs_offset(&p
->out_data
.rdata
);
2626 DEBUG(6, ("api_rpc_cmds[%d].fn == %p\n",
2627 fn_num
, api_rpc_cmds
[fn_num
].fn
));
2628 /* do the actual command */
2629 if(!api_rpc_cmds
[fn_num
].fn(p
)) {
2630 DEBUG(0,("api_rpcTNP: %s: %s failed.\n",
2631 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
),
2632 api_rpc_cmds
[fn_num
].name
));
2633 prs_mem_free(&p
->out_data
.rdata
);
2637 if (p
->bad_handle_fault_state
) {
2638 DEBUG(4,("api_rpcTNP: bad handle fault return.\n"));
2639 p
->bad_handle_fault_state
= False
;
2640 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_CONTEXT_MISMATCH
));
2644 if (p
->rng_fault_state
) {
2645 DEBUG(4, ("api_rpcTNP: rng fault return\n"));
2646 p
->rng_fault_state
= False
;
2647 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
2651 offset2
= prs_offset(&p
->out_data
.rdata
);
2652 prs_set_offset(&p
->out_data
.rdata
, offset1
);
2653 if (DEBUGLEVEL
>= 50) {
2655 slprintf(name
, sizeof(name
)-1, "out_%s",
2656 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
));
2657 prs_dump(name
, p
->hdr_req
.opnum
, &p
->out_data
.rdata
);
2659 prs_set_offset(&p
->out_data
.rdata
, offset2
);
2661 DEBUG(5,("api_rpcTNP: called %s successfully\n",
2662 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
)));
2664 /* Check for buffer underflow in rpc parsing */
2666 if ((DEBUGLEVEL
>= 10) &&
2667 (prs_offset(&p
->in_data
.data
) != prs_data_size(&p
->in_data
.data
))) {
2668 size_t data_len
= prs_data_size(&p
->in_data
.data
) - prs_offset(&p
->in_data
.data
);
2669 char *data
= (char *)SMB_MALLOC(data_len
);
2671 DEBUG(10, ("api_rpcTNP: rpc input buffer underflow (parse error?)\n"));
2673 prs_uint8s(False
, "", &p
->in_data
.data
, 0, (unsigned char *)data
, (uint32
)data_len
);