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 pipe_id_info pipe_names
[];
33 extern struct current_user current_user
;
36 #define DBGC_CLASS DBGC_RPC_SRV
38 static void free_pipe_ntlmssp_auth_data(struct pipe_auth_data
*auth
)
40 AUTH_NTLMSSP_STATE
*a
= auth
->a_u
.auth_ntlmssp_state
;
45 auth
->a_u
.auth_ntlmssp_state
= NULL
;
48 static DATA_BLOB
generic_session_key(void)
50 return data_blob("SystemLibraryDTC", 16);
53 /*******************************************************************
54 Generate the next PDU to be returned from the data in p->rdata.
56 ********************************************************************/
58 static bool create_next_pdu_ntlmssp(pipes_struct
*p
)
60 RPC_HDR_RESP hdr_resp
;
61 uint32 ss_padding_len
= 0;
62 uint32 data_space_available
;
65 prs_struct outgoing_pdu
;
68 RPC_HDR_AUTH auth_info
;
69 uint8 auth_type
, auth_level
;
70 AUTH_NTLMSSP_STATE
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
73 * If we're in the fault state, keep returning fault PDU's until
74 * the pipe gets closed. JRA.
78 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
82 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
84 /* Change the incoming request header to a response. */
85 p
->hdr
.pkt_type
= RPC_RESPONSE
;
87 /* Set up rpc header flags. */
88 if (p
->out_data
.data_sent_length
== 0) {
89 p
->hdr
.flags
= RPC_FLG_FIRST
;
95 * Work out how much we can fit in a single PDU.
98 data_len_left
= prs_offset(&p
->out_data
.rdata
) - p
->out_data
.data_sent_length
;
101 * Ensure there really is data left to send.
105 DEBUG(0,("create_next_pdu_ntlmssp: no data left to send !\n"));
109 data_space_available
= sizeof(p
->out_data
.current_pdu
) - RPC_HEADER_LEN
- RPC_HDR_RESP_LEN
-
110 RPC_HDR_AUTH_LEN
- NTLMSSP_SIG_SIZE
;
113 * The amount we send is the minimum of the available
114 * space and the amount left to send.
117 data_len
= MIN(data_len_left
, data_space_available
);
120 * Set up the alloc hint. This should be the data left to
124 hdr_resp
.alloc_hint
= data_len_left
;
127 * Work out if this PDU will be the last.
130 if(p
->out_data
.data_sent_length
+ data_len
>= prs_offset(&p
->out_data
.rdata
)) {
131 p
->hdr
.flags
|= RPC_FLG_LAST
;
132 if (data_len_left
% 8) {
133 ss_padding_len
= 8 - (data_len_left
% 8);
134 DEBUG(10,("create_next_pdu_ntlmssp: adding sign/seal padding of %u\n",
140 * Set up the header lengths.
143 p
->hdr
.frag_len
= RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+
144 data_len
+ ss_padding_len
+
145 RPC_HDR_AUTH_LEN
+ NTLMSSP_SIG_SIZE
;
146 p
->hdr
.auth_len
= NTLMSSP_SIG_SIZE
;
150 * Init the parse struct to point at the outgoing
154 prs_init_empty( &outgoing_pdu
, p
->mem_ctx
, MARSHALL
);
155 prs_give_memory( &outgoing_pdu
, (char *)p
->out_data
.current_pdu
, sizeof(p
->out_data
.current_pdu
), False
);
157 /* Store the header in the data stream. */
158 if(!smb_io_rpc_hdr("hdr", &p
->hdr
, &outgoing_pdu
, 0)) {
159 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR.\n"));
160 prs_mem_free(&outgoing_pdu
);
164 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &outgoing_pdu
, 0)) {
165 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_RESP.\n"));
166 prs_mem_free(&outgoing_pdu
);
170 /* Copy the data into the PDU. */
172 if(!prs_append_some_prs_data(&outgoing_pdu
, &p
->out_data
.rdata
, p
->out_data
.data_sent_length
, data_len
)) {
173 DEBUG(0,("create_next_pdu_ntlmssp: failed to copy %u bytes of data.\n", (unsigned int)data_len
));
174 prs_mem_free(&outgoing_pdu
);
178 /* Copy the sign/seal padding data. */
179 if (ss_padding_len
) {
182 memset(pad
, '\0', 8);
183 if (!prs_copy_data_in(&outgoing_pdu
, pad
, ss_padding_len
)) {
184 DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes of pad data.\n",
185 (unsigned int)ss_padding_len
));
186 prs_mem_free(&outgoing_pdu
);
192 /* Now write out the auth header and null blob. */
193 if (p
->auth
.auth_type
== PIPE_AUTH_TYPE_NTLMSSP
) {
194 auth_type
= RPC_NTLMSSP_AUTH_TYPE
;
196 auth_type
= RPC_SPNEGO_AUTH_TYPE
;
198 if (p
->auth
.auth_level
== PIPE_AUTH_LEVEL_PRIVACY
) {
199 auth_level
= RPC_AUTH_LEVEL_PRIVACY
;
201 auth_level
= RPC_AUTH_LEVEL_INTEGRITY
;
204 init_rpc_hdr_auth(&auth_info
, auth_type
, auth_level
, ss_padding_len
, 1 /* context id. */);
205 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
, &outgoing_pdu
, 0)) {
206 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_AUTH.\n"));
207 prs_mem_free(&outgoing_pdu
);
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(a
->ntlmssp_state
,
217 (unsigned char *)prs_data_p(&outgoing_pdu
) + RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
,
218 data_len
+ ss_padding_len
,
219 (unsigned char *)prs_data_p(&outgoing_pdu
),
220 (size_t)prs_offset(&outgoing_pdu
),
222 if (!NT_STATUS_IS_OK(status
)) {
223 data_blob_free(&auth_blob
);
224 prs_mem_free(&outgoing_pdu
);
228 case PIPE_AUTH_LEVEL_INTEGRITY
:
229 /* Data is signed. */
230 status
= ntlmssp_sign_packet(a
->ntlmssp_state
,
231 (unsigned char *)prs_data_p(&outgoing_pdu
) + RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
,
232 data_len
+ ss_padding_len
,
233 (unsigned char *)prs_data_p(&outgoing_pdu
),
234 (size_t)prs_offset(&outgoing_pdu
),
236 if (!NT_STATUS_IS_OK(status
)) {
237 data_blob_free(&auth_blob
);
238 prs_mem_free(&outgoing_pdu
);
243 prs_mem_free(&outgoing_pdu
);
247 /* Append the auth blob. */
248 if (!prs_copy_data_in(&outgoing_pdu
, (char *)auth_blob
.data
, NTLMSSP_SIG_SIZE
)) {
249 DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes auth blob.\n",
250 (unsigned int)NTLMSSP_SIG_SIZE
));
251 data_blob_free(&auth_blob
);
252 prs_mem_free(&outgoing_pdu
);
256 data_blob_free(&auth_blob
);
259 * Setup the counts for this PDU.
262 p
->out_data
.data_sent_length
+= data_len
;
263 p
->out_data
.current_pdu_len
= p
->hdr
.frag_len
;
264 p
->out_data
.current_pdu_sent
= 0;
266 prs_mem_free(&outgoing_pdu
);
270 /*******************************************************************
271 Generate the next PDU to be returned from the data in p->rdata.
272 Return an schannel authenticated fragment.
273 ********************************************************************/
275 static bool create_next_pdu_schannel(pipes_struct
*p
)
277 RPC_HDR_RESP hdr_resp
;
278 uint32 ss_padding_len
= 0;
280 uint32 data_space_available
;
281 uint32 data_len_left
;
282 prs_struct outgoing_pdu
;
286 * If we're in the fault state, keep returning fault PDU's until
287 * the pipe gets closed. JRA.
291 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
295 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
297 /* Change the incoming request header to a response. */
298 p
->hdr
.pkt_type
= RPC_RESPONSE
;
300 /* Set up rpc header flags. */
301 if (p
->out_data
.data_sent_length
== 0) {
302 p
->hdr
.flags
= RPC_FLG_FIRST
;
308 * Work out how much we can fit in a single PDU.
311 data_len_left
= prs_offset(&p
->out_data
.rdata
) - p
->out_data
.data_sent_length
;
314 * Ensure there really is data left to send.
318 DEBUG(0,("create_next_pdu_schannel: no data left to send !\n"));
322 data_space_available
= sizeof(p
->out_data
.current_pdu
) - RPC_HEADER_LEN
- RPC_HDR_RESP_LEN
-
323 RPC_HDR_AUTH_LEN
- RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
;
326 * The amount we send is the minimum of the available
327 * space and the amount left to send.
330 data_len
= MIN(data_len_left
, data_space_available
);
333 * Set up the alloc hint. This should be the data left to
337 hdr_resp
.alloc_hint
= data_len_left
;
340 * Work out if this PDU will be the last.
343 if(p
->out_data
.data_sent_length
+ data_len
>= prs_offset(&p
->out_data
.rdata
)) {
344 p
->hdr
.flags
|= RPC_FLG_LAST
;
345 if (data_len_left
% 8) {
346 ss_padding_len
= 8 - (data_len_left
% 8);
347 DEBUG(10,("create_next_pdu_schannel: adding sign/seal padding of %u\n",
352 p
->hdr
.frag_len
= RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+ data_len
+ ss_padding_len
+
353 RPC_HDR_AUTH_LEN
+ RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
;
354 p
->hdr
.auth_len
= RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
;
357 * Init the parse struct to point at the outgoing
361 prs_init_empty( &outgoing_pdu
, p
->mem_ctx
, MARSHALL
);
362 prs_give_memory( &outgoing_pdu
, (char *)p
->out_data
.current_pdu
, sizeof(p
->out_data
.current_pdu
), False
);
364 /* Store the header in the data stream. */
365 if(!smb_io_rpc_hdr("hdr", &p
->hdr
, &outgoing_pdu
, 0)) {
366 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR.\n"));
367 prs_mem_free(&outgoing_pdu
);
371 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &outgoing_pdu
, 0)) {
372 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_RESP.\n"));
373 prs_mem_free(&outgoing_pdu
);
377 /* Store the current offset. */
378 data_pos
= prs_offset(&outgoing_pdu
);
380 /* Copy the data into the PDU. */
382 if(!prs_append_some_prs_data(&outgoing_pdu
, &p
->out_data
.rdata
, p
->out_data
.data_sent_length
, data_len
)) {
383 DEBUG(0,("create_next_pdu_schannel: failed to copy %u bytes of data.\n", (unsigned int)data_len
));
384 prs_mem_free(&outgoing_pdu
);
388 /* Copy the sign/seal padding data. */
389 if (ss_padding_len
) {
391 memset(pad
, '\0', 8);
392 if (!prs_copy_data_in(&outgoing_pdu
, pad
, ss_padding_len
)) {
393 DEBUG(0,("create_next_pdu_schannel: failed to add %u bytes of pad data.\n", (unsigned int)ss_padding_len
));
394 prs_mem_free(&outgoing_pdu
);
401 * Schannel processing.
404 RPC_HDR_AUTH auth_info
;
405 RPC_AUTH_SCHANNEL_CHK verf
;
407 data
= prs_data_p(&outgoing_pdu
) + data_pos
;
408 /* Check it's the type of reply we were expecting to decode */
410 init_rpc_hdr_auth(&auth_info
,
411 RPC_SCHANNEL_AUTH_TYPE
,
412 p
->auth
.auth_level
== PIPE_AUTH_LEVEL_PRIVACY
?
413 RPC_AUTH_LEVEL_PRIVACY
: RPC_AUTH_LEVEL_INTEGRITY
,
416 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
, &outgoing_pdu
, 0)) {
417 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_AUTH.\n"));
418 prs_mem_free(&outgoing_pdu
);
422 schannel_encode(p
->auth
.a_u
.schannel_auth
,
425 &verf
, data
, data_len
+ ss_padding_len
);
427 if (!smb_io_rpc_auth_schannel_chk("", RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
,
428 &verf
, &outgoing_pdu
, 0)) {
429 prs_mem_free(&outgoing_pdu
);
433 p
->auth
.a_u
.schannel_auth
->seq_num
++;
437 * Setup the counts for this PDU.
440 p
->out_data
.data_sent_length
+= data_len
;
441 p
->out_data
.current_pdu_len
= p
->hdr
.frag_len
;
442 p
->out_data
.current_pdu_sent
= 0;
444 prs_mem_free(&outgoing_pdu
);
448 /*******************************************************************
449 Generate the next PDU to be returned from the data in p->rdata.
450 No authentication done.
451 ********************************************************************/
453 static bool create_next_pdu_noauth(pipes_struct
*p
)
455 RPC_HDR_RESP hdr_resp
;
457 uint32 data_space_available
;
458 uint32 data_len_left
;
459 prs_struct outgoing_pdu
;
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
= sizeof(p
->out_data
.current_pdu
) - RPC_HEADER_LEN
- RPC_HDR_RESP_LEN
;
501 * The amount we send is the minimum of the available
502 * space and the amount left to send.
505 data_len
= MIN(data_len_left
, data_space_available
);
508 * Set up the alloc hint. This should be the data left to
512 hdr_resp
.alloc_hint
= data_len_left
;
515 * Work out if this PDU will be the last.
518 if(p
->out_data
.data_sent_length
+ data_len
>= prs_offset(&p
->out_data
.rdata
)) {
519 p
->hdr
.flags
|= RPC_FLG_LAST
;
523 * Set up the header lengths.
526 p
->hdr
.frag_len
= RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+ data_len
;
530 * Init the parse struct to point at the outgoing
534 prs_init_empty( &outgoing_pdu
, p
->mem_ctx
, MARSHALL
);
535 prs_give_memory( &outgoing_pdu
, (char *)p
->out_data
.current_pdu
, sizeof(p
->out_data
.current_pdu
), False
);
537 /* Store the header in the data stream. */
538 if(!smb_io_rpc_hdr("hdr", &p
->hdr
, &outgoing_pdu
, 0)) {
539 DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR.\n"));
540 prs_mem_free(&outgoing_pdu
);
544 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &outgoing_pdu
, 0)) {
545 DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR_RESP.\n"));
546 prs_mem_free(&outgoing_pdu
);
550 /* Copy the data into the PDU. */
552 if(!prs_append_some_prs_data(&outgoing_pdu
, &p
->out_data
.rdata
, p
->out_data
.data_sent_length
, data_len
)) {
553 DEBUG(0,("create_next_pdu_noauth: failed to copy %u bytes of data.\n", (unsigned int)data_len
));
554 prs_mem_free(&outgoing_pdu
);
559 * Setup the counts for this PDU.
562 p
->out_data
.data_sent_length
+= data_len
;
563 p
->out_data
.current_pdu_len
= p
->hdr
.frag_len
;
564 p
->out_data
.current_pdu_sent
= 0;
566 prs_mem_free(&outgoing_pdu
);
570 /*******************************************************************
571 Generate the next PDU to be returned from the data in p->rdata.
572 ********************************************************************/
574 bool create_next_pdu(pipes_struct
*p
)
576 switch(p
->auth
.auth_level
) {
577 case PIPE_AUTH_LEVEL_NONE
:
578 case PIPE_AUTH_LEVEL_CONNECT
:
579 /* This is incorrect for auth level connect. Fixme. JRA */
580 return create_next_pdu_noauth(p
);
583 switch(p
->auth
.auth_type
) {
584 case PIPE_AUTH_TYPE_NTLMSSP
:
585 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
:
586 return create_next_pdu_ntlmssp(p
);
587 case PIPE_AUTH_TYPE_SCHANNEL
:
588 return create_next_pdu_schannel(p
);
594 DEBUG(0,("create_next_pdu: invalid internal auth level %u / type %u",
595 (unsigned int)p
->auth
.auth_level
,
596 (unsigned int)p
->auth
.auth_type
));
600 /*******************************************************************
601 Process an NTLMSSP authentication response.
602 If this function succeeds, the user has been authenticated
603 and their domain, name and calling workstation stored in
605 *******************************************************************/
607 static bool pipe_ntlmssp_verify_final(pipes_struct
*p
, DATA_BLOB
*p_resp_blob
)
611 AUTH_NTLMSSP_STATE
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
613 DEBUG(5,("pipe_ntlmssp_verify_final: pipe %s checking user details\n", p
->name
));
617 memset(p
->user_name
, '\0', sizeof(p
->user_name
));
618 memset(p
->pipe_user_name
, '\0', sizeof(p
->pipe_user_name
));
619 memset(p
->domain
, '\0', sizeof(p
->domain
));
620 memset(p
->wks
, '\0', sizeof(p
->wks
));
622 /* Set up for non-authenticated user. */
623 TALLOC_FREE(p
->pipe_user
.nt_user_token
);
624 p
->pipe_user
.ut
.ngroups
= 0;
625 SAFE_FREE( p
->pipe_user
.ut
.groups
);
627 /* this has to be done as root in order to verify the password */
629 status
= auth_ntlmssp_update(a
, *p_resp_blob
, &reply
);
632 /* Don't generate a reply. */
633 data_blob_free(&reply
);
635 if (!NT_STATUS_IS_OK(status
)) {
639 /* Finally - if the pipe negotiated integrity (sign) or privacy (seal)
640 ensure the underlying NTLMSSP flags are also set. If not we should
643 if (p
->auth
.auth_level
== PIPE_AUTH_LEVEL_INTEGRITY
) {
644 if (!(a
->ntlmssp_state
->neg_flags
& NTLMSSP_NEGOTIATE_SIGN
)) {
645 DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet integrity requested "
646 "but client declined signing.\n",
651 if (p
->auth
.auth_level
== PIPE_AUTH_LEVEL_PRIVACY
) {
652 if (!(a
->ntlmssp_state
->neg_flags
& NTLMSSP_NEGOTIATE_SEAL
)) {
653 DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet privacy requested "
654 "but client declined sealing.\n",
660 fstrcpy(p
->user_name
, a
->ntlmssp_state
->user
);
661 fstrcpy(p
->pipe_user_name
, a
->server_info
->unix_name
);
662 fstrcpy(p
->domain
, a
->ntlmssp_state
->domain
);
663 fstrcpy(p
->wks
, a
->ntlmssp_state
->workstation
);
665 DEBUG(5,("pipe_ntlmssp_verify_final: OK: user: %s domain: %s workstation: %s\n",
666 p
->user_name
, p
->domain
, p
->wks
));
669 * Store the UNIX credential data (uid/gid pair) in the pipe structure.
672 p
->pipe_user
.ut
.uid
= a
->server_info
->uid
;
673 p
->pipe_user
.ut
.gid
= a
->server_info
->gid
;
676 * We're an authenticated bind over smbd, so the session key needs to
677 * be set to "SystemLibraryDTC". Weird, but this is what Windows
678 * does. See the RPC-SAMBA3SESSIONKEY.
681 data_blob_free(&p
->session_key
);
682 p
->session_key
= generic_session_key();
683 if (!p
->session_key
.data
) {
687 p
->pipe_user
.ut
.ngroups
= a
->server_info
->n_groups
;
688 if (p
->pipe_user
.ut
.ngroups
) {
689 if (!(p
->pipe_user
.ut
.groups
= (gid_t
*)memdup(a
->server_info
->groups
,
690 sizeof(gid_t
) * p
->pipe_user
.ut
.ngroups
))) {
691 DEBUG(0,("failed to memdup group list to p->pipe_user.groups\n"));
696 if (a
->server_info
->ptok
) {
697 p
->pipe_user
.nt_user_token
=
698 dup_nt_token(NULL
, a
->server_info
->ptok
);
700 DEBUG(1,("Error: Authmodule failed to provide nt_user_token\n"));
701 p
->pipe_user
.nt_user_token
= NULL
;
708 /*******************************************************************
709 The switch table for the pipe names and the functions to handle them.
710 *******************************************************************/
717 const struct api_struct
*cmds
;
721 static struct rpc_table
*rpc_lookup
;
722 static int rpc_lookup_size
;
724 /*******************************************************************
725 This is the "stage3" NTLMSSP response after a bind request and reply.
726 *******************************************************************/
728 bool api_pipe_bind_auth3(pipes_struct
*p
, prs_struct
*rpc_in_p
)
730 RPC_HDR_AUTH auth_info
;
736 DEBUG(5,("api_pipe_bind_auth3: decode request. %d\n", __LINE__
));
738 if (p
->hdr
.auth_len
== 0) {
739 DEBUG(0,("api_pipe_bind_auth3: No auth field sent !\n"));
743 /* 4 bytes padding. */
744 if (!prs_uint32("pad", rpc_in_p
, 0, &pad
)) {
745 DEBUG(0,("api_pipe_bind_auth3: unmarshall of 4 byte pad failed.\n"));
750 * Decode the authentication verifier response.
753 if(!smb_io_rpc_hdr_auth("", &auth_info
, rpc_in_p
, 0)) {
754 DEBUG(0,("api_pipe_bind_auth3: unmarshall of RPC_HDR_AUTH failed.\n"));
758 if (auth_info
.auth_type
!= RPC_NTLMSSP_AUTH_TYPE
) {
759 DEBUG(0,("api_pipe_bind_auth3: incorrect auth type (%u).\n",
760 (unsigned int)auth_info
.auth_type
));
764 blob
= data_blob(NULL
,p
->hdr
.auth_len
);
766 if (!prs_copy_data_out((char *)blob
.data
, rpc_in_p
, p
->hdr
.auth_len
)) {
767 DEBUG(0,("api_pipe_bind_auth3: Failed to pull %u bytes - the response blob.\n",
768 (unsigned int)p
->hdr
.auth_len
));
773 * The following call actually checks the challenge/response data.
774 * for correctness against the given DOMAIN\user name.
777 if (!pipe_ntlmssp_verify_final(p
, &blob
)) {
781 data_blob_free(&blob
);
783 p
->pipe_bound
= True
;
789 data_blob_free(&blob
);
790 free_pipe_ntlmssp_auth_data(&p
->auth
);
791 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
796 /*******************************************************************
797 Marshall a bind_nak pdu.
798 *******************************************************************/
800 static bool setup_bind_nak(pipes_struct
*p
)
802 prs_struct outgoing_rpc
;
806 /* Free any memory in the current return data buffer. */
807 prs_mem_free(&p
->out_data
.rdata
);
810 * Marshall directly into the outgoing PDU space. We
811 * must do this as we need to set to the bind response
812 * header and are never sending more than one PDU here.
815 prs_init_empty( &outgoing_rpc
, p
->mem_ctx
, MARSHALL
);
816 prs_give_memory( &outgoing_rpc
, (char *)p
->out_data
.current_pdu
, sizeof(p
->out_data
.current_pdu
), False
);
819 * Initialize a bind_nak header.
822 init_rpc_hdr(&nak_hdr
, RPC_BINDNACK
, RPC_FLG_FIRST
| RPC_FLG_LAST
,
823 p
->hdr
.call_id
, RPC_HEADER_LEN
+ sizeof(uint16
), 0);
826 * Marshall the header into the outgoing PDU.
829 if(!smb_io_rpc_hdr("", &nak_hdr
, &outgoing_rpc
, 0)) {
830 DEBUG(0,("setup_bind_nak: marshalling of RPC_HDR failed.\n"));
831 prs_mem_free(&outgoing_rpc
);
836 * Now add the reject reason.
839 if(!prs_uint16("reject code", &outgoing_rpc
, 0, &zero
)) {
840 prs_mem_free(&outgoing_rpc
);
844 p
->out_data
.data_sent_length
= 0;
845 p
->out_data
.current_pdu_len
= prs_offset(&outgoing_rpc
);
846 p
->out_data
.current_pdu_sent
= 0;
848 if (p
->auth
.auth_data_free_func
) {
849 (*p
->auth
.auth_data_free_func
)(&p
->auth
);
851 p
->auth
.auth_level
= PIPE_AUTH_LEVEL_NONE
;
852 p
->auth
.auth_type
= PIPE_AUTH_TYPE_NONE
;
853 p
->pipe_bound
= False
;
858 /*******************************************************************
859 Marshall a fault pdu.
860 *******************************************************************/
862 bool setup_fault_pdu(pipes_struct
*p
, NTSTATUS status
)
864 prs_struct outgoing_pdu
;
866 RPC_HDR_RESP hdr_resp
;
867 RPC_HDR_FAULT fault_resp
;
869 /* Free any memory in the current return data buffer. */
870 prs_mem_free(&p
->out_data
.rdata
);
873 * Marshall directly into the outgoing PDU space. We
874 * must do this as we need to set to the bind response
875 * header and are never sending more than one PDU here.
878 prs_init_empty( &outgoing_pdu
, p
->mem_ctx
, MARSHALL
);
879 prs_give_memory( &outgoing_pdu
, (char *)p
->out_data
.current_pdu
, sizeof(p
->out_data
.current_pdu
), False
);
882 * Initialize a fault header.
885 init_rpc_hdr(&fault_hdr
, RPC_FAULT
, RPC_FLG_FIRST
| RPC_FLG_LAST
| RPC_FLG_NOCALL
,
886 p
->hdr
.call_id
, RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+ RPC_HDR_FAULT_LEN
, 0);
889 * Initialize the HDR_RESP and FAULT parts of the PDU.
892 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
894 fault_resp
.status
= status
;
895 fault_resp
.reserved
= 0;
898 * Marshall the header into the outgoing PDU.
901 if(!smb_io_rpc_hdr("", &fault_hdr
, &outgoing_pdu
, 0)) {
902 DEBUG(0,("setup_fault_pdu: marshalling of RPC_HDR failed.\n"));
903 prs_mem_free(&outgoing_pdu
);
907 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &outgoing_pdu
, 0)) {
908 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_RESP.\n"));
909 prs_mem_free(&outgoing_pdu
);
913 if(!smb_io_rpc_hdr_fault("fault", &fault_resp
, &outgoing_pdu
, 0)) {
914 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_FAULT.\n"));
915 prs_mem_free(&outgoing_pdu
);
919 p
->out_data
.data_sent_length
= 0;
920 p
->out_data
.current_pdu_len
= prs_offset(&outgoing_pdu
);
921 p
->out_data
.current_pdu_sent
= 0;
923 prs_mem_free(&outgoing_pdu
);
928 /*******************************************************************
929 Marshall a cancel_ack pdu.
930 We should probably check the auth-verifier here.
931 *******************************************************************/
933 bool setup_cancel_ack_reply(pipes_struct
*p
, prs_struct
*rpc_in_p
)
935 prs_struct outgoing_pdu
;
936 RPC_HDR ack_reply_hdr
;
938 /* Free any memory in the current return data buffer. */
939 prs_mem_free(&p
->out_data
.rdata
);
942 * Marshall directly into the outgoing PDU space. We
943 * must do this as we need to set to the bind response
944 * header and are never sending more than one PDU here.
947 prs_init_empty( &outgoing_pdu
, p
->mem_ctx
, MARSHALL
);
948 prs_give_memory( &outgoing_pdu
, (char *)p
->out_data
.current_pdu
, sizeof(p
->out_data
.current_pdu
), False
);
951 * Initialize a cancel_ack header.
954 init_rpc_hdr(&ack_reply_hdr
, RPC_CANCEL_ACK
, RPC_FLG_FIRST
| RPC_FLG_LAST
,
955 p
->hdr
.call_id
, RPC_HEADER_LEN
, 0);
958 * Marshall the header into the outgoing PDU.
961 if(!smb_io_rpc_hdr("", &ack_reply_hdr
, &outgoing_pdu
, 0)) {
962 DEBUG(0,("setup_cancel_ack_reply: marshalling of RPC_HDR failed.\n"));
963 prs_mem_free(&outgoing_pdu
);
967 p
->out_data
.data_sent_length
= 0;
968 p
->out_data
.current_pdu_len
= prs_offset(&outgoing_pdu
);
969 p
->out_data
.current_pdu_sent
= 0;
971 prs_mem_free(&outgoing_pdu
);
976 /*******************************************************************
977 Ensure a bind request has the correct abstract & transfer interface.
978 Used to reject unknown binds from Win2k.
979 *******************************************************************/
981 bool check_bind_req(struct pipes_struct
*p
, RPC_IFACE
* abstract
,
982 RPC_IFACE
* transfer
, uint32 context_id
)
984 char *pipe_name
= p
->name
;
988 fstrcpy(pname
,"\\PIPE\\");
989 fstrcat(pname
,pipe_name
);
991 DEBUG(3,("check_bind_req for %s\n", pname
));
993 /* we have to check all now since win2k introduced a new UUID on the lsaprpc pipe */
995 for ( i
=0; pipe_names
[i
].client_pipe
; i
++ ) {
996 DEBUGADD(10,("checking %s\n", pipe_names
[i
].client_pipe
));
997 if ( strequal(pipe_names
[i
].client_pipe
, pname
)
998 && (abstract
->version
== pipe_names
[i
].abstr_syntax
.version
)
999 && (memcmp(&abstract
->uuid
, &pipe_names
[i
].abstr_syntax
.uuid
, sizeof(struct GUID
)) == 0)
1000 && (transfer
->version
== pipe_names
[i
].trans_syntax
.version
)
1001 && (memcmp(&transfer
->uuid
, &pipe_names
[i
].trans_syntax
.uuid
, sizeof(struct GUID
)) == 0) ) {
1002 struct api_struct
*fns
= NULL
;
1004 PIPE_RPC_FNS
*context_fns
;
1006 if ( !(context_fns
= SMB_MALLOC_P(PIPE_RPC_FNS
)) ) {
1007 DEBUG(0,("check_bind_req: malloc() failed!\n"));
1011 /* save the RPC function table associated with this bind */
1013 get_pipe_fns(i
, &fns
, &n_fns
);
1015 context_fns
->cmds
= fns
;
1016 context_fns
->n_cmds
= n_fns
;
1017 context_fns
->context_id
= context_id
;
1019 /* add to the list of open contexts */
1021 DLIST_ADD( p
->contexts
, context_fns
);
1027 if(pipe_names
[i
].client_pipe
== NULL
) {
1034 /*******************************************************************
1035 Register commands to an RPC pipe
1036 *******************************************************************/
1038 NTSTATUS
rpc_pipe_register_commands(int version
, const char *clnt
, const char *srv
, const struct api_struct
*cmds
, int size
)
1040 struct rpc_table
*rpc_entry
;
1042 if (!clnt
|| !srv
|| !cmds
) {
1043 return NT_STATUS_INVALID_PARAMETER
;
1046 if (version
!= SMB_RPC_INTERFACE_VERSION
) {
1047 DEBUG(0,("Can't register rpc commands!\n"
1048 "You tried to register a rpc module with SMB_RPC_INTERFACE_VERSION %d"
1049 ", while this version of samba uses version %d!\n",
1050 version
,SMB_RPC_INTERFACE_VERSION
));
1051 return NT_STATUS_OBJECT_TYPE_MISMATCH
;
1056 * we still need to make sure that don't register the same commands twice!!!
1061 /* We use a temporary variable because this call can fail and
1062 rpc_lookup will still be valid afterwards. It could then succeed if
1063 called again later */
1065 rpc_entry
= SMB_REALLOC_ARRAY_KEEP_OLD_ON_ERROR(rpc_lookup
, struct rpc_table
, rpc_lookup_size
);
1066 if (NULL
== rpc_entry
) {
1068 DEBUG(0, ("rpc_pipe_register_commands: memory allocation failed\n"));
1069 return NT_STATUS_NO_MEMORY
;
1071 rpc_lookup
= rpc_entry
;
1074 rpc_entry
= rpc_lookup
+ (rpc_lookup_size
- 1);
1075 ZERO_STRUCTP(rpc_entry
);
1076 rpc_entry
->pipe
.clnt
= SMB_STRDUP(clnt
);
1077 rpc_entry
->pipe
.srv
= SMB_STRDUP(srv
);
1078 rpc_entry
->cmds
= cmds
;
1079 rpc_entry
->n_cmds
= size
;
1081 return NT_STATUS_OK
;
1084 /*******************************************************************
1085 Handle a SPNEGO krb5 bind auth.
1086 *******************************************************************/
1088 static bool pipe_spnego_auth_bind_kerberos(pipes_struct
*p
, prs_struct
*rpc_in_p
, RPC_HDR_AUTH
*pauth_info
,
1089 DATA_BLOB
*psecblob
, prs_struct
*pout_auth
)
1094 /*******************************************************************
1095 Handle the first part of a SPNEGO bind auth.
1096 *******************************************************************/
1098 static bool pipe_spnego_auth_bind_negotiate(pipes_struct
*p
, prs_struct
*rpc_in_p
,
1099 RPC_HDR_AUTH
*pauth_info
, prs_struct
*pout_auth
)
1105 char *OIDs
[ASN1_MAX_OIDS
];
1108 bool got_kerberos_mechanism
= false;
1109 AUTH_NTLMSSP_STATE
*a
= NULL
;
1110 RPC_HDR_AUTH auth_info
;
1112 ZERO_STRUCT(secblob
);
1114 ZERO_STRUCT(response
);
1116 /* Grab the SPNEGO blob. */
1117 blob
= data_blob(NULL
,p
->hdr
.auth_len
);
1119 if (!prs_copy_data_out((char *)blob
.data
, rpc_in_p
, p
->hdr
.auth_len
)) {
1120 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to pull %u bytes - the SPNEGO auth header.\n",
1121 (unsigned int)p
->hdr
.auth_len
));
1125 if (blob
.data
[0] != ASN1_APPLICATION(0)) {
1129 /* parse out the OIDs and the first sec blob */
1130 if (!parse_negTokenTarg(blob
, OIDs
, &secblob
)) {
1131 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to parse the security blob.\n"));
1135 if (strcmp(OID_KERBEROS5
, OIDs
[0]) == 0 || strcmp(OID_KERBEROS5_OLD
, OIDs
[0]) == 0) {
1136 got_kerberos_mechanism
= true;
1139 for (i
=0;OIDs
[i
];i
++) {
1140 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got OID %s\n", OIDs
[i
]));
1143 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got secblob of size %lu\n", (unsigned long)secblob
.length
));
1145 if ( got_kerberos_mechanism
&& ((lp_security()==SEC_ADS
) || lp_use_kerberos_keytab()) ) {
1146 bool ret
= pipe_spnego_auth_bind_kerberos(p
, rpc_in_p
, pauth_info
, &secblob
, pout_auth
);
1147 data_blob_free(&secblob
);
1148 data_blob_free(&blob
);
1152 if (p
->auth
.auth_type
== PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
&& p
->auth
.a_u
.auth_ntlmssp_state
) {
1153 /* Free any previous auth type. */
1154 free_pipe_ntlmssp_auth_data(&p
->auth
);
1157 if (!got_kerberos_mechanism
) {
1158 /* Initialize the NTLM engine. */
1159 status
= auth_ntlmssp_start(&a
);
1160 if (!NT_STATUS_IS_OK(status
)) {
1165 * Pass the first security blob of data to it.
1166 * This can return an error or NT_STATUS_MORE_PROCESSING_REQUIRED
1167 * which means we need another packet to complete the bind.
1170 status
= auth_ntlmssp_update(a
, secblob
, &chal
);
1172 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
1173 DEBUG(3,("pipe_spnego_auth_bind_negotiate: auth_ntlmssp_update failed.\n"));
1177 /* Generate the response blob we need for step 2 of the bind. */
1178 response
= spnego_gen_auth_response(&chal
, status
, OID_NTLMSSP
);
1181 * SPNEGO negotiate down to NTLMSSP. The subsequent
1182 * code to process follow-up packets is not complete
1185 response
= spnego_gen_auth_response(NULL
,
1186 NT_STATUS_MORE_PROCESSING_REQUIRED
,
1190 /* Copy the blob into the pout_auth parse struct */
1191 init_rpc_hdr_auth(&auth_info
, RPC_SPNEGO_AUTH_TYPE
, pauth_info
->auth_level
, RPC_HDR_AUTH_LEN
, 1);
1192 if(!smb_io_rpc_hdr_auth("", &auth_info
, pout_auth
, 0)) {
1193 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of RPC_HDR_AUTH failed.\n"));
1197 if (!prs_copy_data_in(pout_auth
, (char *)response
.data
, response
.length
)) {
1198 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of data blob failed.\n"));
1202 p
->auth
.a_u
.auth_ntlmssp_state
= a
;
1203 p
->auth
.auth_data_free_func
= &free_pipe_ntlmssp_auth_data
;
1204 p
->auth
.auth_type
= PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
;
1206 data_blob_free(&blob
);
1207 data_blob_free(&secblob
);
1208 data_blob_free(&chal
);
1209 data_blob_free(&response
);
1211 /* We can't set pipe_bound True yet - we need an RPC_ALTER_CONTEXT response packet... */
1216 data_blob_free(&blob
);
1217 data_blob_free(&secblob
);
1218 data_blob_free(&chal
);
1219 data_blob_free(&response
);
1221 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
1226 /*******************************************************************
1227 Handle the second part of a SPNEGO bind auth.
1228 *******************************************************************/
1230 static bool pipe_spnego_auth_bind_continue(pipes_struct
*p
, prs_struct
*rpc_in_p
,
1231 RPC_HDR_AUTH
*pauth_info
, prs_struct
*pout_auth
)
1233 RPC_HDR_AUTH auth_info
;
1234 DATA_BLOB spnego_blob
;
1235 DATA_BLOB auth_blob
;
1236 DATA_BLOB auth_reply
;
1238 AUTH_NTLMSSP_STATE
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
1240 ZERO_STRUCT(spnego_blob
);
1241 ZERO_STRUCT(auth_blob
);
1242 ZERO_STRUCT(auth_reply
);
1243 ZERO_STRUCT(response
);
1246 * NB. If we've negotiated down from krb5 to NTLMSSP we'll currently
1247 * fail here as 'a' == NULL.
1249 if (p
->auth
.auth_type
!= PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
|| !a
) {
1250 DEBUG(0,("pipe_spnego_auth_bind_continue: not in NTLMSSP auth state.\n"));
1254 /* Grab the SPNEGO blob. */
1255 spnego_blob
= data_blob(NULL
,p
->hdr
.auth_len
);
1257 if (!prs_copy_data_out((char *)spnego_blob
.data
, rpc_in_p
, p
->hdr
.auth_len
)) {
1258 DEBUG(0,("pipe_spnego_auth_bind_continue: Failed to pull %u bytes - the SPNEGO auth header.\n",
1259 (unsigned int)p
->hdr
.auth_len
));
1263 if (spnego_blob
.data
[0] != ASN1_CONTEXT(1)) {
1264 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob type.\n"));
1268 if (!spnego_parse_auth(spnego_blob
, &auth_blob
)) {
1269 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob.\n"));
1274 * The following call actually checks the challenge/response data.
1275 * for correctness against the given DOMAIN\user name.
1278 if (!pipe_ntlmssp_verify_final(p
, &auth_blob
)) {
1282 data_blob_free(&spnego_blob
);
1283 data_blob_free(&auth_blob
);
1285 /* Generate the spnego "accept completed" blob - no incoming data. */
1286 response
= spnego_gen_auth_response(&auth_reply
, NT_STATUS_OK
, OID_NTLMSSP
);
1288 /* Copy the blob into the pout_auth parse struct */
1289 init_rpc_hdr_auth(&auth_info
, RPC_SPNEGO_AUTH_TYPE
, pauth_info
->auth_level
, RPC_HDR_AUTH_LEN
, 1);
1290 if(!smb_io_rpc_hdr_auth("", &auth_info
, pout_auth
, 0)) {
1291 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of RPC_HDR_AUTH failed.\n"));
1295 if (!prs_copy_data_in(pout_auth
, (char *)response
.data
, response
.length
)) {
1296 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of data blob failed.\n"));
1300 data_blob_free(&auth_reply
);
1301 data_blob_free(&response
);
1303 p
->pipe_bound
= True
;
1309 data_blob_free(&spnego_blob
);
1310 data_blob_free(&auth_blob
);
1311 data_blob_free(&auth_reply
);
1312 data_blob_free(&response
);
1314 free_pipe_ntlmssp_auth_data(&p
->auth
);
1315 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
1320 /*******************************************************************
1321 Handle an schannel bind auth.
1322 *******************************************************************/
1324 static bool pipe_schannel_auth_bind(pipes_struct
*p
, prs_struct
*rpc_in_p
,
1325 RPC_HDR_AUTH
*pauth_info
, prs_struct
*pout_auth
)
1327 RPC_HDR_AUTH auth_info
;
1328 RPC_AUTH_SCHANNEL_NEG neg
;
1329 RPC_AUTH_VERIFIER auth_verifier
;
1331 struct dcinfo
*pdcinfo
;
1334 if (!smb_io_rpc_auth_schannel_neg("", &neg
, rpc_in_p
, 0)) {
1335 DEBUG(0,("pipe_schannel_auth_bind: Could not unmarshal SCHANNEL auth neg\n"));
1340 * The neg.myname key here must match the remote computer name
1341 * given in the DOM_CLNT_SRV.uni_comp_name used on all netlogon pipe
1342 * operations that use credentials.
1346 ret
= secrets_restore_schannel_session_info(p
->mem_ctx
, neg
.myname
, &pdcinfo
);
1350 DEBUG(0, ("pipe_schannel_auth_bind: Attempt to bind using schannel without successful serverauth2\n"));
1354 p
->auth
.a_u
.schannel_auth
= TALLOC_P(p
->pipe_state_mem_ctx
, struct schannel_auth_struct
);
1355 if (!p
->auth
.a_u
.schannel_auth
) {
1356 TALLOC_FREE(pdcinfo
);
1360 memset(p
->auth
.a_u
.schannel_auth
->sess_key
, 0, sizeof(p
->auth
.a_u
.schannel_auth
->sess_key
));
1361 memcpy(p
->auth
.a_u
.schannel_auth
->sess_key
, pdcinfo
->sess_key
,
1362 sizeof(pdcinfo
->sess_key
));
1364 TALLOC_FREE(pdcinfo
);
1366 p
->auth
.a_u
.schannel_auth
->seq_num
= 0;
1369 * JRA. Should we also copy the schannel session key into the pipe session key p->session_key
1370 * here ? We do that for NTLMSSP, but the session key is already set up from the vuser
1371 * struct of the person who opened the pipe. I need to test this further. JRA.
1373 * VL. As we are mapping this to guest set the generic key
1374 * "SystemLibraryDTC" key here. It's a bit difficult to test against
1375 * W2k3, as it does not allow schannel binds against SAMR and LSA
1379 data_blob_free(&p
->session_key
);
1380 p
->session_key
= generic_session_key();
1381 if (p
->session_key
.data
== NULL
) {
1382 DEBUG(0, ("pipe_schannel_auth_bind: Could not alloc session"
1387 init_rpc_hdr_auth(&auth_info
, RPC_SCHANNEL_AUTH_TYPE
, pauth_info
->auth_level
, RPC_HDR_AUTH_LEN
, 1);
1388 if(!smb_io_rpc_hdr_auth("", &auth_info
, pout_auth
, 0)) {
1389 DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1393 /*** SCHANNEL verifier ***/
1395 init_rpc_auth_verifier(&auth_verifier
, "\001", 0x0);
1396 if(!smb_io_rpc_schannel_verifier("", &auth_verifier
, pout_auth
, 0)) {
1397 DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_AUTH_VERIFIER failed.\n"));
1401 prs_align(pout_auth
);
1404 if(!prs_uint32("flags ", pout_auth
, 0, &flags
)) {
1408 DEBUG(10,("pipe_schannel_auth_bind: schannel auth: domain [%s] myname [%s]\n",
1409 neg
.domain
, neg
.myname
));
1411 /* We're finished with this bind - no more packets. */
1412 p
->auth
.auth_data_free_func
= NULL
;
1413 p
->auth
.auth_type
= PIPE_AUTH_TYPE_SCHANNEL
;
1415 p
->pipe_bound
= True
;
1420 /*******************************************************************
1421 Handle an NTLMSSP bind auth.
1422 *******************************************************************/
1424 static bool pipe_ntlmssp_auth_bind(pipes_struct
*p
, prs_struct
*rpc_in_p
,
1425 RPC_HDR_AUTH
*pauth_info
, prs_struct
*pout_auth
)
1427 RPC_HDR_AUTH auth_info
;
1431 AUTH_NTLMSSP_STATE
*a
= NULL
;
1434 ZERO_STRUCT(response
);
1436 /* Grab the NTLMSSP blob. */
1437 blob
= data_blob(NULL
,p
->hdr
.auth_len
);
1439 if (!prs_copy_data_out((char *)blob
.data
, rpc_in_p
, p
->hdr
.auth_len
)) {
1440 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to pull %u bytes - the NTLM auth header.\n",
1441 (unsigned int)p
->hdr
.auth_len
));
1445 if (strncmp((char *)blob
.data
, "NTLMSSP", 7) != 0) {
1446 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to read NTLMSSP in blob\n"));
1450 /* We have an NTLMSSP blob. */
1451 status
= auth_ntlmssp_start(&a
);
1452 if (!NT_STATUS_IS_OK(status
)) {
1453 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_start failed: %s\n",
1454 nt_errstr(status
) ));
1458 status
= auth_ntlmssp_update(a
, blob
, &response
);
1459 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
1460 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_update failed: %s\n",
1461 nt_errstr(status
) ));
1465 data_blob_free(&blob
);
1467 /* Copy the blob into the pout_auth parse struct */
1468 init_rpc_hdr_auth(&auth_info
, RPC_NTLMSSP_AUTH_TYPE
, pauth_info
->auth_level
, RPC_HDR_AUTH_LEN
, 1);
1469 if(!smb_io_rpc_hdr_auth("", &auth_info
, pout_auth
, 0)) {
1470 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1474 if (!prs_copy_data_in(pout_auth
, (char *)response
.data
, response
.length
)) {
1475 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of data blob failed.\n"));
1479 p
->auth
.a_u
.auth_ntlmssp_state
= a
;
1480 p
->auth
.auth_data_free_func
= &free_pipe_ntlmssp_auth_data
;
1481 p
->auth
.auth_type
= PIPE_AUTH_TYPE_NTLMSSP
;
1483 data_blob_free(&blob
);
1484 data_blob_free(&response
);
1486 DEBUG(10,("pipe_ntlmssp_auth_bind: NTLMSSP auth started\n"));
1488 /* We can't set pipe_bound True yet - we need an RPC_AUTH3 response packet... */
1493 data_blob_free(&blob
);
1494 data_blob_free(&response
);
1496 free_pipe_ntlmssp_auth_data(&p
->auth
);
1497 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
1501 /*******************************************************************
1502 Respond to a pipe bind request.
1503 *******************************************************************/
1505 bool api_pipe_bind_req(pipes_struct
*p
, prs_struct
*rpc_in_p
)
1509 RPC_HDR_AUTH auth_info
;
1511 fstring ack_pipe_name
;
1512 prs_struct out_hdr_ba
;
1513 prs_struct out_auth
;
1514 prs_struct outgoing_rpc
;
1517 unsigned int auth_type
= RPC_ANONYMOUS_AUTH_TYPE
;
1519 /* No rebinds on a bound pipe - use alter context. */
1520 if (p
->pipe_bound
) {
1521 DEBUG(2,("api_pipe_bind_req: rejecting bind request on bound pipe %s.\n", p
->pipe_srv_name
));
1522 return setup_bind_nak(p
);
1525 prs_init_empty( &outgoing_rpc
, p
->mem_ctx
, MARSHALL
);
1528 * Marshall directly into the outgoing PDU space. We
1529 * must do this as we need to set to the bind response
1530 * header and are never sending more than one PDU here.
1533 prs_give_memory( &outgoing_rpc
, (char *)p
->out_data
.current_pdu
, sizeof(p
->out_data
.current_pdu
), False
);
1536 * Setup the memory to marshall the ba header, and the
1540 if(!prs_init(&out_hdr_ba
, 1024, p
->mem_ctx
, MARSHALL
)) {
1541 DEBUG(0,("api_pipe_bind_req: malloc out_hdr_ba failed.\n"));
1542 prs_mem_free(&outgoing_rpc
);
1546 if(!prs_init(&out_auth
, 1024, p
->mem_ctx
, MARSHALL
)) {
1547 DEBUG(0,("api_pipe_bind_req: malloc out_auth failed.\n"));
1548 prs_mem_free(&outgoing_rpc
);
1549 prs_mem_free(&out_hdr_ba
);
1553 DEBUG(5,("api_pipe_bind_req: decode request. %d\n", __LINE__
));
1556 * Try and find the correct pipe name to ensure
1557 * that this is a pipe name we support.
1561 for (i
= 0; i
< rpc_lookup_size
; i
++) {
1562 if (strequal(rpc_lookup
[i
].pipe
.clnt
, p
->name
)) {
1563 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1564 rpc_lookup
[i
].pipe
.clnt
, rpc_lookup
[i
].pipe
.srv
));
1565 fstrcpy(p
->pipe_srv_name
, rpc_lookup
[i
].pipe
.srv
);
1570 if (i
== rpc_lookup_size
) {
1571 if (NT_STATUS_IS_ERR(smb_probe_module("rpc", p
->name
))) {
1572 DEBUG(3,("api_pipe_bind_req: Unknown pipe name %s in bind request.\n",
1574 prs_mem_free(&outgoing_rpc
);
1575 prs_mem_free(&out_hdr_ba
);
1576 prs_mem_free(&out_auth
);
1578 return setup_bind_nak(p
);
1581 for (i
= 0; i
< rpc_lookup_size
; i
++) {
1582 if (strequal(rpc_lookup
[i
].pipe
.clnt
, p
->name
)) {
1583 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1584 rpc_lookup
[i
].pipe
.clnt
, rpc_lookup
[i
].pipe
.srv
));
1585 fstrcpy(p
->pipe_srv_name
, rpc_lookup
[i
].pipe
.srv
);
1590 if (i
== rpc_lookup_size
) {
1591 DEBUG(0, ("module %s doesn't provide functions for pipe %s!\n", p
->name
, p
->name
));
1596 /* decode the bind request */
1597 if(!smb_io_rpc_hdr_rb("", &hdr_rb
, rpc_in_p
, 0)) {
1598 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_RB struct.\n"));
1602 /* name has to be \PIPE\xxxxx */
1603 fstrcpy(ack_pipe_name
, "\\PIPE\\");
1604 fstrcat(ack_pipe_name
, p
->pipe_srv_name
);
1606 DEBUG(5,("api_pipe_bind_req: make response. %d\n", __LINE__
));
1609 * Check if this is an authenticated bind request.
1612 if (p
->hdr
.auth_len
) {
1614 * Decode the authentication verifier.
1617 if(!smb_io_rpc_hdr_auth("", &auth_info
, rpc_in_p
, 0)) {
1618 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1622 auth_type
= auth_info
.auth_type
;
1624 /* Work out if we have to sign or seal etc. */
1625 switch (auth_info
.auth_level
) {
1626 case RPC_AUTH_LEVEL_INTEGRITY
:
1627 p
->auth
.auth_level
= PIPE_AUTH_LEVEL_INTEGRITY
;
1629 case RPC_AUTH_LEVEL_PRIVACY
:
1630 p
->auth
.auth_level
= PIPE_AUTH_LEVEL_PRIVACY
;
1633 DEBUG(0,("api_pipe_bind_req: unexpected auth level (%u).\n",
1634 (unsigned int)auth_info
.auth_level
));
1638 ZERO_STRUCT(auth_info
);
1641 assoc_gid
= hdr_rb
.bba
.assoc_gid
? hdr_rb
.bba
.assoc_gid
: 0x53f0;
1644 case RPC_NTLMSSP_AUTH_TYPE
:
1645 if (!pipe_ntlmssp_auth_bind(p
, rpc_in_p
, &auth_info
, &out_auth
)) {
1651 case RPC_SCHANNEL_AUTH_TYPE
:
1652 if (!pipe_schannel_auth_bind(p
, rpc_in_p
, &auth_info
, &out_auth
)) {
1657 case RPC_SPNEGO_AUTH_TYPE
:
1658 if (!pipe_spnego_auth_bind_negotiate(p
, rpc_in_p
, &auth_info
, &out_auth
)) {
1663 case RPC_ANONYMOUS_AUTH_TYPE
:
1664 /* Unauthenticated bind request. */
1665 /* Get the authenticated pipe user from current_user */
1666 if (!copy_current_user(&p
->pipe_user
, ¤t_user
)) {
1667 DEBUG(10, ("Could not copy current user\n"));
1670 /* We're finished - no more packets. */
1671 p
->auth
.auth_type
= PIPE_AUTH_TYPE_NONE
;
1672 /* We must set the pipe auth_level here also. */
1673 p
->auth
.auth_level
= PIPE_AUTH_LEVEL_NONE
;
1674 p
->pipe_bound
= True
;
1675 /* The session key was initialized from the SMB
1676 * session in make_internal_rpc_pipe_p */
1680 DEBUG(0,("api_pipe_bind_req: unknown auth type %x requested.\n", auth_type
));
1685 * Create the bind response struct.
1688 /* If the requested abstract synt uuid doesn't match our client pipe,
1689 reject the bind_ack & set the transfer interface synt to all 0's,
1690 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1692 Needed when adding entries to a DACL from NT5 - SK */
1694 if(check_bind_req(p
, &hdr_rb
.rpc_context
[0].abstract
, &hdr_rb
.rpc_context
[0].transfer
[0],
1695 hdr_rb
.rpc_context
[0].context_id
)) {
1696 init_rpc_hdr_ba(&hdr_ba
,
1697 RPC_MAX_PDU_FRAG_LEN
,
1698 RPC_MAX_PDU_FRAG_LEN
,
1702 &hdr_rb
.rpc_context
[0].transfer
[0]);
1704 RPC_IFACE null_interface
;
1705 ZERO_STRUCT(null_interface
);
1706 /* Rejection reason: abstract syntax not supported */
1707 init_rpc_hdr_ba(&hdr_ba
, RPC_MAX_PDU_FRAG_LEN
,
1708 RPC_MAX_PDU_FRAG_LEN
, assoc_gid
,
1709 ack_pipe_name
, 0x1, 0x2, 0x1,
1711 p
->pipe_bound
= False
;
1718 if(!smb_io_rpc_hdr_ba("", &hdr_ba
, &out_hdr_ba
, 0)) {
1719 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR_BA failed.\n"));
1724 * Create the header, now we know the length.
1727 if (prs_offset(&out_auth
)) {
1728 auth_len
= prs_offset(&out_auth
) - RPC_HDR_AUTH_LEN
;
1731 init_rpc_hdr(&p
->hdr
, RPC_BINDACK
, RPC_FLG_FIRST
| RPC_FLG_LAST
,
1733 RPC_HEADER_LEN
+ prs_offset(&out_hdr_ba
) + prs_offset(&out_auth
),
1737 * Marshall the header into the outgoing PDU.
1740 if(!smb_io_rpc_hdr("", &p
->hdr
, &outgoing_rpc
, 0)) {
1741 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR failed.\n"));
1746 * Now add the RPC_HDR_BA and any auth needed.
1749 if(!prs_append_prs_data( &outgoing_rpc
, &out_hdr_ba
)) {
1750 DEBUG(0,("api_pipe_bind_req: append of RPC_HDR_BA failed.\n"));
1754 if (auth_len
&& !prs_append_prs_data( &outgoing_rpc
, &out_auth
)) {
1755 DEBUG(0,("api_pipe_bind_req: append of auth info failed.\n"));
1760 * Setup the lengths for the initial reply.
1763 p
->out_data
.data_sent_length
= 0;
1764 p
->out_data
.current_pdu_len
= prs_offset(&outgoing_rpc
);
1765 p
->out_data
.current_pdu_sent
= 0;
1767 prs_mem_free(&out_hdr_ba
);
1768 prs_mem_free(&out_auth
);
1774 prs_mem_free(&outgoing_rpc
);
1775 prs_mem_free(&out_hdr_ba
);
1776 prs_mem_free(&out_auth
);
1777 return setup_bind_nak(p
);
1780 /****************************************************************************
1781 Deal with an alter context call. Can be third part of 3 leg auth request for
1783 ****************************************************************************/
1785 bool api_pipe_alter_context(pipes_struct
*p
, prs_struct
*rpc_in_p
)
1789 RPC_HDR_AUTH auth_info
;
1791 fstring ack_pipe_name
;
1792 prs_struct out_hdr_ba
;
1793 prs_struct out_auth
;
1794 prs_struct outgoing_rpc
;
1797 prs_init_empty( &outgoing_rpc
, p
->mem_ctx
, MARSHALL
);
1800 * Marshall directly into the outgoing PDU space. We
1801 * must do this as we need to set to the bind response
1802 * header and are never sending more than one PDU here.
1805 prs_give_memory( &outgoing_rpc
, (char *)p
->out_data
.current_pdu
, sizeof(p
->out_data
.current_pdu
), False
);
1808 * Setup the memory to marshall the ba header, and the
1812 if(!prs_init(&out_hdr_ba
, 1024, p
->mem_ctx
, MARSHALL
)) {
1813 DEBUG(0,("api_pipe_alter_context: malloc out_hdr_ba failed.\n"));
1814 prs_mem_free(&outgoing_rpc
);
1818 if(!prs_init(&out_auth
, 1024, p
->mem_ctx
, MARSHALL
)) {
1819 DEBUG(0,("api_pipe_alter_context: malloc out_auth failed.\n"));
1820 prs_mem_free(&outgoing_rpc
);
1821 prs_mem_free(&out_hdr_ba
);
1825 DEBUG(5,("api_pipe_alter_context: decode request. %d\n", __LINE__
));
1827 /* decode the alter context request */
1828 if(!smb_io_rpc_hdr_rb("", &hdr_rb
, rpc_in_p
, 0)) {
1829 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_RB struct.\n"));
1833 /* secondary address CAN be NULL
1834 * as the specs say it's ignored.
1835 * It MUST be NULL to have the spoolss working.
1837 fstrcpy(ack_pipe_name
,"");
1839 DEBUG(5,("api_pipe_alter_context: make response. %d\n", __LINE__
));
1842 * Check if this is an authenticated alter context request.
1845 if (p
->hdr
.auth_len
!= 0) {
1847 * Decode the authentication verifier.
1850 if(!smb_io_rpc_hdr_auth("", &auth_info
, rpc_in_p
, 0)) {
1851 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1856 * Currently only the SPNEGO auth type uses the alter ctx
1857 * response in place of the NTLMSSP auth3 type.
1860 if (auth_info
.auth_type
== RPC_SPNEGO_AUTH_TYPE
) {
1861 /* We can only finish if the pipe is unbound. */
1862 if (!p
->pipe_bound
) {
1863 if (!pipe_spnego_auth_bind_continue(p
, rpc_in_p
, &auth_info
, &out_auth
)) {
1871 ZERO_STRUCT(auth_info
);
1874 assoc_gid
= hdr_rb
.bba
.assoc_gid
? hdr_rb
.bba
.assoc_gid
: 0x53f0;
1877 * Create the bind response struct.
1880 /* If the requested abstract synt uuid doesn't match our client pipe,
1881 reject the bind_ack & set the transfer interface synt to all 0's,
1882 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1884 Needed when adding entries to a DACL from NT5 - SK */
1886 if(check_bind_req(p
, &hdr_rb
.rpc_context
[0].abstract
, &hdr_rb
.rpc_context
[0].transfer
[0],
1887 hdr_rb
.rpc_context
[0].context_id
)) {
1888 init_rpc_hdr_ba(&hdr_ba
,
1889 RPC_MAX_PDU_FRAG_LEN
,
1890 RPC_MAX_PDU_FRAG_LEN
,
1894 &hdr_rb
.rpc_context
[0].transfer
[0]);
1896 RPC_IFACE null_interface
;
1897 ZERO_STRUCT(null_interface
);
1898 /* Rejection reason: abstract syntax not supported */
1899 init_rpc_hdr_ba(&hdr_ba
, RPC_MAX_PDU_FRAG_LEN
,
1900 RPC_MAX_PDU_FRAG_LEN
, assoc_gid
,
1901 ack_pipe_name
, 0x1, 0x2, 0x1,
1903 p
->pipe_bound
= False
;
1910 if(!smb_io_rpc_hdr_ba("", &hdr_ba
, &out_hdr_ba
, 0)) {
1911 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR_BA failed.\n"));
1916 * Create the header, now we know the length.
1919 if (prs_offset(&out_auth
)) {
1920 auth_len
= prs_offset(&out_auth
) - RPC_HDR_AUTH_LEN
;
1923 init_rpc_hdr(&p
->hdr
, RPC_ALTCONTRESP
, RPC_FLG_FIRST
| RPC_FLG_LAST
,
1925 RPC_HEADER_LEN
+ prs_offset(&out_hdr_ba
) + prs_offset(&out_auth
),
1929 * Marshall the header into the outgoing PDU.
1932 if(!smb_io_rpc_hdr("", &p
->hdr
, &outgoing_rpc
, 0)) {
1933 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR failed.\n"));
1938 * Now add the RPC_HDR_BA and any auth needed.
1941 if(!prs_append_prs_data( &outgoing_rpc
, &out_hdr_ba
)) {
1942 DEBUG(0,("api_pipe_alter_context: append of RPC_HDR_BA failed.\n"));
1946 if (auth_len
&& !prs_append_prs_data( &outgoing_rpc
, &out_auth
)) {
1947 DEBUG(0,("api_pipe_alter_context: append of auth info failed.\n"));
1952 * Setup the lengths for the initial reply.
1955 p
->out_data
.data_sent_length
= 0;
1956 p
->out_data
.current_pdu_len
= prs_offset(&outgoing_rpc
);
1957 p
->out_data
.current_pdu_sent
= 0;
1959 prs_mem_free(&out_hdr_ba
);
1960 prs_mem_free(&out_auth
);
1966 prs_mem_free(&outgoing_rpc
);
1967 prs_mem_free(&out_hdr_ba
);
1968 prs_mem_free(&out_auth
);
1969 return setup_bind_nak(p
);
1972 /****************************************************************************
1973 Deal with NTLMSSP sign & seal processing on an RPC request.
1974 ****************************************************************************/
1976 bool api_pipe_ntlmssp_auth_process(pipes_struct
*p
, prs_struct
*rpc_in
,
1977 uint32
*p_ss_padding_len
, NTSTATUS
*pstatus
)
1979 RPC_HDR_AUTH auth_info
;
1980 uint32 auth_len
= p
->hdr
.auth_len
;
1981 uint32 save_offset
= prs_offset(rpc_in
);
1982 AUTH_NTLMSSP_STATE
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
1983 unsigned char *data
= NULL
;
1985 unsigned char *full_packet_data
= NULL
;
1986 size_t full_packet_data_len
;
1987 DATA_BLOB auth_blob
;
1989 *pstatus
= NT_STATUS_OK
;
1991 if (p
->auth
.auth_level
== PIPE_AUTH_LEVEL_NONE
|| p
->auth
.auth_level
== PIPE_AUTH_LEVEL_CONNECT
) {
1996 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2000 /* Ensure there's enough data for an authenticated request. */
2001 if ((auth_len
> RPC_MAX_SIGN_SIZE
) ||
2002 (RPC_HEADER_LEN
+ RPC_HDR_REQ_LEN
+ RPC_HDR_AUTH_LEN
+ auth_len
> p
->hdr
.frag_len
)) {
2003 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len %u is too large.\n",
2004 (unsigned int)auth_len
));
2005 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2010 * We need the full packet data + length (minus auth stuff) as well as the packet data + length
2011 * after the RPC header.
2012 * We need to pass in the full packet (minus auth len) to the NTLMSSP sign and check seal
2013 * functions as NTLMv2 checks the rpc headers also.
2016 data
= (unsigned char *)(prs_data_p(rpc_in
) + RPC_HDR_REQ_LEN
);
2017 data_len
= (size_t)(p
->hdr
.frag_len
- RPC_HEADER_LEN
- RPC_HDR_REQ_LEN
- RPC_HDR_AUTH_LEN
- auth_len
);
2019 full_packet_data
= p
->in_data
.current_in_pdu
;
2020 full_packet_data_len
= p
->hdr
.frag_len
- auth_len
;
2022 /* Pull the auth header and the following data into a blob. */
2023 if(!prs_set_offset(rpc_in
, RPC_HDR_REQ_LEN
+ data_len
)) {
2024 DEBUG(0,("api_pipe_ntlmssp_auth_process: cannot move offset to %u.\n",
2025 (unsigned int)RPC_HDR_REQ_LEN
+ (unsigned int)data_len
));
2026 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2030 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
, rpc_in
, 0)) {
2031 DEBUG(0,("api_pipe_ntlmssp_auth_process: failed to unmarshall RPC_HDR_AUTH.\n"));
2032 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2036 auth_blob
.data
= (unsigned char *)prs_data_p(rpc_in
) + prs_offset(rpc_in
);
2037 auth_blob
.length
= auth_len
;
2039 switch (p
->auth
.auth_level
) {
2040 case PIPE_AUTH_LEVEL_PRIVACY
:
2041 /* Data is encrypted. */
2042 *pstatus
= ntlmssp_unseal_packet(a
->ntlmssp_state
,
2045 full_packet_data_len
,
2047 if (!NT_STATUS_IS_OK(*pstatus
)) {
2051 case PIPE_AUTH_LEVEL_INTEGRITY
:
2052 /* Data is signed. */
2053 *pstatus
= ntlmssp_check_packet(a
->ntlmssp_state
,
2056 full_packet_data_len
,
2058 if (!NT_STATUS_IS_OK(*pstatus
)) {
2063 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2068 * Return the current pointer to the data offset.
2071 if(!prs_set_offset(rpc_in
, save_offset
)) {
2072 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
2073 (unsigned int)save_offset
));
2074 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2079 * Remember the padding length. We must remove it from the real data
2080 * stream once the sign/seal is done.
2083 *p_ss_padding_len
= auth_info
.auth_pad_len
;
2088 /****************************************************************************
2089 Deal with schannel processing on an RPC request.
2090 ****************************************************************************/
2092 bool api_pipe_schannel_process(pipes_struct
*p
, prs_struct
*rpc_in
, uint32
*p_ss_padding_len
)
2096 uint32 save_offset
= prs_offset(rpc_in
);
2097 RPC_HDR_AUTH auth_info
;
2098 RPC_AUTH_SCHANNEL_CHK schannel_chk
;
2100 auth_len
= p
->hdr
.auth_len
;
2102 if (auth_len
!= RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
) {
2103 DEBUG(0,("Incorrect auth_len %u.\n", (unsigned int)auth_len
));
2108 * The following is that length of the data we must verify or unseal.
2109 * This doesn't include the RPC headers or the auth_len or the RPC_HDR_AUTH_LEN
2110 * preceeding the auth_data.
2113 if (p
->hdr
.frag_len
< RPC_HEADER_LEN
+ RPC_HDR_REQ_LEN
+ RPC_HDR_AUTH_LEN
+ auth_len
) {
2114 DEBUG(0,("Incorrect frag %u, auth %u.\n",
2115 (unsigned int)p
->hdr
.frag_len
,
2116 (unsigned int)auth_len
));
2120 data_len
= p
->hdr
.frag_len
- RPC_HEADER_LEN
- RPC_HDR_REQ_LEN
-
2121 RPC_HDR_AUTH_LEN
- auth_len
;
2123 DEBUG(5,("data %d auth %d\n", data_len
, auth_len
));
2125 if(!prs_set_offset(rpc_in
, RPC_HDR_REQ_LEN
+ data_len
)) {
2126 DEBUG(0,("cannot move offset to %u.\n",
2127 (unsigned int)RPC_HDR_REQ_LEN
+ data_len
));
2131 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
, rpc_in
, 0)) {
2132 DEBUG(0,("failed to unmarshall RPC_HDR_AUTH.\n"));
2136 if (auth_info
.auth_type
!= RPC_SCHANNEL_AUTH_TYPE
) {
2137 DEBUG(0,("Invalid auth info %d on schannel\n",
2138 auth_info
.auth_type
));
2142 if(!smb_io_rpc_auth_schannel_chk("", RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
, &schannel_chk
, rpc_in
, 0)) {
2143 DEBUG(0,("failed to unmarshal RPC_AUTH_SCHANNEL_CHK.\n"));
2147 if (!schannel_decode(p
->auth
.a_u
.schannel_auth
,
2149 SENDER_IS_INITIATOR
,
2151 prs_data_p(rpc_in
)+RPC_HDR_REQ_LEN
, data_len
)) {
2152 DEBUG(3,("failed to decode PDU\n"));
2157 * Return the current pointer to the data offset.
2160 if(!prs_set_offset(rpc_in
, save_offset
)) {
2161 DEBUG(0,("failed to set offset back to %u\n",
2162 (unsigned int)save_offset
));
2166 /* The sequence number gets incremented on both send and receive. */
2167 p
->auth
.a_u
.schannel_auth
->seq_num
++;
2170 * Remember the padding length. We must remove it from the real data
2171 * stream once the sign/seal is done.
2174 *p_ss_padding_len
= auth_info
.auth_pad_len
;
2179 /****************************************************************************
2180 Return a user struct for a pipe user.
2181 ****************************************************************************/
2183 struct current_user
*get_current_user(struct current_user
*user
, pipes_struct
*p
)
2185 if (p
->pipe_bound
&&
2186 (p
->auth
.auth_type
== PIPE_AUTH_TYPE_NTLMSSP
||
2187 (p
->auth
.auth_type
== PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
))) {
2188 memcpy(user
, &p
->pipe_user
, sizeof(struct current_user
));
2190 memcpy(user
, ¤t_user
, sizeof(struct current_user
));
2196 /****************************************************************************
2197 Find the set of RPC functions associated with this context_id
2198 ****************************************************************************/
2200 static PIPE_RPC_FNS
* find_pipe_fns_by_context( PIPE_RPC_FNS
*list
, uint32 context_id
)
2202 PIPE_RPC_FNS
*fns
= NULL
;
2203 PIPE_RPC_FNS
*tmp
= NULL
;
2206 DEBUG(0,("find_pipe_fns_by_context: ERROR! No context list for pipe!\n"));
2210 for (tmp
=list
; tmp
; tmp
=tmp
->next
) {
2211 if ( tmp
->context_id
== context_id
)
2220 /****************************************************************************
2222 ****************************************************************************/
2224 void free_pipe_rpc_context( PIPE_RPC_FNS
*list
)
2226 PIPE_RPC_FNS
*tmp
= list
;
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", p
->name
));
2262 /* get the set of RPC functions for this context */
2264 pipe_fns
= find_pipe_fns_by_context(p
->contexts
, p
->hdr_req
.context_id
);
2267 TALLOC_CTX
*frame
= talloc_stackframe();
2268 ret
= api_rpcTNP(p
, p
->name
, pipe_fns
->cmds
, pipe_fns
->n_cmds
);
2272 DEBUG(0,("api_pipe_request: No rpc function table associated with context [%d] on pipe [%s]\n",
2273 p
->hdr_req
.context_id
, p
->name
));
2277 unbecome_authenticated_pipe_user();
2283 /*******************************************************************
2284 Calls the underlying RPC function for a named pipe.
2285 ********************************************************************/
2287 bool api_rpcTNP(pipes_struct
*p
, const char *rpc_name
,
2288 const struct api_struct
*api_rpc_cmds
, int n_cmds
)
2292 uint32 offset1
, offset2
;
2294 /* interpret the command */
2295 DEBUG(4,("api_rpcTNP: %s op 0x%x - ", rpc_name
, p
->hdr_req
.opnum
));
2297 slprintf(name
, sizeof(name
)-1, "in_%s", rpc_name
);
2298 prs_dump(name
, p
->hdr_req
.opnum
, &p
->in_data
.data
);
2300 for (fn_num
= 0; fn_num
< n_cmds
; fn_num
++) {
2301 if (api_rpc_cmds
[fn_num
].opnum
== p
->hdr_req
.opnum
&& api_rpc_cmds
[fn_num
].fn
!= NULL
) {
2302 DEBUG(3,("api_rpcTNP: rpc command: %s\n", api_rpc_cmds
[fn_num
].name
));
2307 if (fn_num
== n_cmds
) {
2309 * For an unknown RPC just return a fault PDU but
2310 * return True to allow RPC's on the pipe to continue
2311 * and not put the pipe into fault state. JRA.
2313 DEBUG(4, ("unknown\n"));
2314 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
2318 offset1
= prs_offset(&p
->out_data
.rdata
);
2320 DEBUG(6, ("api_rpc_cmds[%d].fn == %p\n",
2321 fn_num
, api_rpc_cmds
[fn_num
].fn
));
2322 /* do the actual command */
2323 if(!api_rpc_cmds
[fn_num
].fn(p
)) {
2324 DEBUG(0,("api_rpcTNP: %s: %s failed.\n", rpc_name
, api_rpc_cmds
[fn_num
].name
));
2325 prs_mem_free(&p
->out_data
.rdata
);
2329 if (p
->bad_handle_fault_state
) {
2330 DEBUG(4,("api_rpcTNP: bad handle fault return.\n"));
2331 p
->bad_handle_fault_state
= False
;
2332 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_CONTEXT_MISMATCH
));
2336 if (p
->rng_fault_state
) {
2337 DEBUG(4, ("api_rpcTNP: rng fault return\n"));
2338 p
->rng_fault_state
= False
;
2339 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
2343 slprintf(name
, sizeof(name
)-1, "out_%s", rpc_name
);
2344 offset2
= prs_offset(&p
->out_data
.rdata
);
2345 prs_set_offset(&p
->out_data
.rdata
, offset1
);
2346 prs_dump(name
, p
->hdr_req
.opnum
, &p
->out_data
.rdata
);
2347 prs_set_offset(&p
->out_data
.rdata
, offset2
);
2349 DEBUG(5,("api_rpcTNP: called %s successfully\n", rpc_name
));
2351 /* Check for buffer underflow in rpc parsing */
2353 if ((DEBUGLEVEL
>= 10) &&
2354 (prs_offset(&p
->in_data
.data
) != prs_data_size(&p
->in_data
.data
))) {
2355 size_t data_len
= prs_data_size(&p
->in_data
.data
) - prs_offset(&p
->in_data
.data
);
2356 char *data
= (char *)SMB_MALLOC(data_len
);
2358 DEBUG(10, ("api_rpcTNP: rpc input buffer underflow (parse error?)\n"));
2360 prs_uint8s(False
, "", &p
->in_data
.data
, 0, (unsigned char *)data
, (uint32
)data_len
);
2369 /*******************************************************************
2370 *******************************************************************/
2372 void get_pipe_fns( int idx
, struct api_struct
**fns
, int *n_fns
)
2374 struct api_struct
*cmds
= NULL
;
2379 lsarpc_get_pipe_fns( &cmds
, &n_cmds
);
2382 dssetup_get_pipe_fns( &cmds
, &n_cmds
);
2385 samr_get_pipe_fns( &cmds
, &n_cmds
);
2388 netlogon_get_pipe_fns( &cmds
, &n_cmds
);
2391 srvsvc2_get_pipe_fns( &cmds
, &n_cmds
);
2394 wkssvc_get_pipe_fns( &cmds
, &n_cmds
);
2397 winreg_get_pipe_fns( &cmds
, &n_cmds
);
2400 spoolss_get_pipe_fns( &cmds
, &n_cmds
);
2403 netdfs_get_pipe_fns( &cmds
, &n_cmds
);
2406 svcctl2_get_pipe_fns( &cmds
, &n_cmds
);
2409 eventlog2_get_pipe_fns( &cmds
, &n_cmds
);
2412 ntsvcs2_get_pipe_fns( &cmds
, &n_cmds
);
2416 rpcecho_get_pipe_fns( &cmds
, &n_cmds
);
2420 DEBUG(0,("get_pipe_fns: Unknown pipe index! [%d]\n", idx
));