2 * Unix SMB/CIFS implementation.
3 * RPC Pipe client / server routines
4 * Almost completely rewritten by (C) Jeremy Allison 2005 - 2010
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 "srv_pipe_internal.h"
32 #include "../librpc/gen_ndr/ndr_schannel.h"
33 #include "../libcli/auth/schannel.h"
34 #include "../libcli/auth/spnego.h"
35 #include "../libcli/auth/ntlmssp.h"
38 #define DBGC_CLASS DBGC_RPC_SRV
40 static void free_pipe_ntlmssp_auth_data(struct pipe_auth_data
*auth
)
42 struct auth_ntlmssp_state
*a
= auth
->a_u
.auth_ntlmssp_state
;
47 auth
->a_u
.auth_ntlmssp_state
= NULL
;
50 static DATA_BLOB
generic_session_key(void)
52 return data_blob("SystemLibraryDTC", 16);
55 /*******************************************************************
56 Generate the next PDU to be returned from the data in p->rdata.
58 ********************************************************************/
60 static bool create_next_pdu_ntlmssp(pipes_struct
*p
)
64 RPC_HDR_RESP hdr_resp
;
65 uint32 ss_padding_len
= 0;
66 uint32 data_space_available
;
71 RPC_HDR_AUTH auth_info
;
72 uint8 auth_type
, auth_level
;
73 struct auth_ntlmssp_state
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
77 * If we're in the fault state, keep returning fault PDU's until
78 * the pipe gets closed. JRA.
82 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
86 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
88 /* Set up rpc header flags. */
89 if (p
->out_data
.data_sent_length
== 0) {
90 hdr_flags
= DCERPC_PFC_FLAG_FIRST
;
96 * Work out how much we can fit in a single PDU.
99 data_len_left
= prs_offset(&p
->out_data
.rdata
) - p
->out_data
.data_sent_length
;
102 * Ensure there really is data left to send.
106 DEBUG(0,("create_next_pdu_ntlmssp: no data left to send !\n"));
110 /* Space available - not including padding. */
111 data_space_available
= RPC_MAX_PDU_FRAG_LEN
- RPC_HEADER_LEN
-
112 RPC_HDR_RESP_LEN
- RPC_HDR_AUTH_LEN
- NTLMSSP_SIG_SIZE
;
115 * The amount we send is the minimum of the available
116 * space and the amount left to send.
119 data_len
= MIN(data_len_left
, data_space_available
);
121 /* Work out any padding alignment requirements. */
122 if ((RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+ data_len
) % SERVER_NDR_PADDING_SIZE
) {
123 ss_padding_len
= SERVER_NDR_PADDING_SIZE
-
124 ((RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+ data_len
) % SERVER_NDR_PADDING_SIZE
);
125 DEBUG(10,("create_next_pdu_ntlmssp: adding sign/seal padding of %u\n",
127 /* If we're over filling the packet, we need to make space
128 * for the padding at the end of the data. */
129 if (data_len
+ ss_padding_len
> data_space_available
) {
130 data_len
-= SERVER_NDR_PADDING_SIZE
;
135 * Set up the alloc hint. This should be the data left to
139 hdr_resp
.alloc_hint
= data_len_left
;
142 * Work out if this PDU will be the last.
144 if (p
->out_data
.data_sent_length
+ data_len
>=
145 prs_offset(&p
->out_data
.rdata
)) {
146 hdr_flags
|= DCERPC_PFC_FLAG_LAST
;
150 * Init the parse struct to point at the outgoing
153 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
155 status
= dcerpc_push_ncacn_packet_header(
156 prs_get_mem_context(&p
->out_data
.frag
),
159 RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+
160 data_len
+ ss_padding_len
+
161 RPC_HDR_AUTH_LEN
+ NTLMSSP_SIG_SIZE
,
165 if (!NT_STATUS_IS_OK(status
)) {
166 DEBUG(0, ("Failed to marshall RPC Header.\n"));
167 prs_mem_free(&p
->out_data
.frag
);
171 /* Store the header in the data stream. */
172 if (!prs_copy_data_in(&p
->out_data
.frag
,
173 (char *)hdr
.data
, hdr
.length
)) {
174 DEBUG(0, ("Out of memory.\n"));
175 prs_mem_free(&p
->out_data
.frag
);
179 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &p
->out_data
.frag
, 0)) {
180 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_RESP.\n"));
181 prs_mem_free(&p
->out_data
.frag
);
185 /* Copy the data into the PDU. */
187 if(!prs_append_some_prs_data(&p
->out_data
.frag
, &p
->out_data
.rdata
,
188 p
->out_data
.data_sent_length
, data_len
)) {
189 DEBUG(0,("create_next_pdu_ntlmssp: failed to copy %u bytes of data.\n", (unsigned int)data_len
));
190 prs_mem_free(&p
->out_data
.frag
);
194 /* Copy the sign/seal padding data. */
195 if (ss_padding_len
) {
196 char pad
[SERVER_NDR_PADDING_SIZE
];
198 memset(pad
, '\0', SERVER_NDR_PADDING_SIZE
);
199 if (!prs_copy_data_in(&p
->out_data
.frag
, pad
,
201 DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes of pad data.\n",
202 (unsigned int)ss_padding_len
));
203 prs_mem_free(&p
->out_data
.frag
);
209 /* Now write out the auth header and null blob. */
210 if (p
->auth
.auth_type
== PIPE_AUTH_TYPE_NTLMSSP
) {
211 auth_type
= DCERPC_AUTH_TYPE_NTLMSSP
;
213 auth_type
= DCERPC_AUTH_TYPE_SPNEGO
;
215 if (p
->auth
.auth_level
== DCERPC_AUTH_LEVEL_PRIVACY
) {
216 auth_level
= DCERPC_AUTH_LEVEL_PRIVACY
;
218 auth_level
= DCERPC_AUTH_LEVEL_INTEGRITY
;
221 init_rpc_hdr_auth(&auth_info
, auth_type
, auth_level
, ss_padding_len
, 1 /* context id. */);
223 if (!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
,
224 &p
->out_data
.frag
, 0)) {
225 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_AUTH.\n"));
226 prs_mem_free(&p
->out_data
.frag
);
230 /* Generate the sign blob. */
232 frame
= talloc_stackframe();
233 switch (p
->auth
.auth_level
) {
234 case DCERPC_AUTH_LEVEL_PRIVACY
:
235 /* Data portion is encrypted. */
236 status
= auth_ntlmssp_seal_packet(
238 (uint8_t *)prs_data_p(&p
->out_data
.frag
)
239 + RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
,
240 data_len
+ ss_padding_len
,
241 (unsigned char *)prs_data_p(&p
->out_data
.frag
),
242 (size_t)prs_offset(&p
->out_data
.frag
),
244 if (!NT_STATUS_IS_OK(status
)) {
246 prs_mem_free(&p
->out_data
.frag
);
250 case DCERPC_AUTH_LEVEL_INTEGRITY
:
251 /* Data is signed. */
252 status
= auth_ntlmssp_sign_packet(
254 (unsigned char *)prs_data_p(&p
->out_data
.frag
)
255 + RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
,
256 data_len
+ ss_padding_len
,
257 (unsigned char *)prs_data_p(&p
->out_data
.frag
),
258 (size_t)prs_offset(&p
->out_data
.frag
),
260 if (!NT_STATUS_IS_OK(status
)) {
262 prs_mem_free(&p
->out_data
.frag
);
268 prs_mem_free(&p
->out_data
.frag
);
272 /* Append the auth blob. */
273 if (!prs_copy_data_in(&p
->out_data
.frag
, (char *)auth_blob
.data
,
275 DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes auth blob.\n",
276 (unsigned int)NTLMSSP_SIG_SIZE
));
278 prs_mem_free(&p
->out_data
.frag
);
284 * Setup the counts for this PDU.
287 p
->out_data
.data_sent_length
+= data_len
;
288 p
->out_data
.current_pdu_sent
= 0;
293 /*******************************************************************
294 Generate the next PDU to be returned from the data in p->rdata.
295 Return an schannel authenticated fragment.
296 ********************************************************************/
298 static bool create_next_pdu_schannel(pipes_struct
*p
)
302 RPC_HDR_RESP hdr_resp
;
303 uint32 ss_padding_len
= 0;
305 uint32 data_space_available
;
306 uint32 data_len_left
;
311 * If we're in the fault state, keep returning fault PDU's until
312 * the pipe gets closed. JRA.
316 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
320 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
322 /* Set up rpc header flags. */
323 if (p
->out_data
.data_sent_length
== 0) {
324 hdr_flags
= DCERPC_PFC_FLAG_FIRST
;
330 * Work out how much we can fit in a single PDU.
333 data_len_left
= prs_offset(&p
->out_data
.rdata
) - p
->out_data
.data_sent_length
;
336 * Ensure there really is data left to send.
340 DEBUG(0,("create_next_pdu_schannel: no data left to send !\n"));
344 /* Space available - not including padding. */
345 data_space_available
= RPC_MAX_PDU_FRAG_LEN
- RPC_HEADER_LEN
346 - RPC_HDR_RESP_LEN
- RPC_HDR_AUTH_LEN
347 - RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
;
350 * The amount we send is the minimum of the available
351 * space and the amount left to send.
354 data_len
= MIN(data_len_left
, data_space_available
);
356 /* Work out any padding alignment requirements. */
357 if ((RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+ data_len
) % SERVER_NDR_PADDING_SIZE
) {
358 ss_padding_len
= SERVER_NDR_PADDING_SIZE
-
359 ((RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+ data_len
) % SERVER_NDR_PADDING_SIZE
);
360 DEBUG(10,("create_next_pdu_schannel: adding sign/seal padding of %u\n",
362 /* If we're over filling the packet, we need to make space
363 * for the padding at the end of the data. */
364 if (data_len
+ ss_padding_len
> data_space_available
) {
365 data_len
-= SERVER_NDR_PADDING_SIZE
;
370 * Set up the alloc hint. This should be the data left to
374 hdr_resp
.alloc_hint
= data_len_left
;
377 * Work out if this PDU will be the last.
379 if (p
->out_data
.data_sent_length
+ data_len
>=
380 prs_offset(&p
->out_data
.rdata
)) {
381 hdr_flags
|= DCERPC_PFC_FLAG_LAST
;
385 * Init the parse struct to point at the outgoing
388 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
390 status
= dcerpc_push_ncacn_packet_header(
391 prs_get_mem_context(&p
->out_data
.frag
),
394 RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+
395 data_len
+ ss_padding_len
+
397 RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
,
398 RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
,
401 if (!NT_STATUS_IS_OK(status
)) {
402 DEBUG(0, ("Failed to marshall RPC Header.\n"));
403 prs_mem_free(&p
->out_data
.frag
);
407 /* Store the header in the data stream. */
408 if (!prs_copy_data_in(&p
->out_data
.frag
,
409 (char *)hdr
.data
, hdr
.length
)) {
410 DEBUG(0, ("Out of memory.\n"));
411 prs_mem_free(&p
->out_data
.frag
);
415 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &p
->out_data
.frag
, 0)) {
416 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_RESP.\n"));
417 prs_mem_free(&p
->out_data
.frag
);
421 /* Store the current offset. */
422 data_pos
= prs_offset(&p
->out_data
.frag
);
424 /* Copy the data into the PDU. */
426 if(!prs_append_some_prs_data(&p
->out_data
.frag
, &p
->out_data
.rdata
,
427 p
->out_data
.data_sent_length
, data_len
)) {
428 DEBUG(0,("create_next_pdu_schannel: failed to copy %u bytes of data.\n", (unsigned int)data_len
));
429 prs_mem_free(&p
->out_data
.frag
);
433 /* Copy the sign/seal padding data. */
434 if (ss_padding_len
) {
435 char pad
[SERVER_NDR_PADDING_SIZE
];
436 memset(pad
, '\0', SERVER_NDR_PADDING_SIZE
);
437 if (!prs_copy_data_in(&p
->out_data
.frag
, pad
,
439 DEBUG(0,("create_next_pdu_schannel: failed to add %u bytes of pad data.\n", (unsigned int)ss_padding_len
));
440 prs_mem_free(&p
->out_data
.frag
);
447 * Schannel processing.
449 RPC_HDR_AUTH auth_info
;
453 /* Check it's the type of reply we were expecting to decode */
455 init_rpc_hdr_auth(&auth_info
,
456 DCERPC_AUTH_TYPE_SCHANNEL
,
457 p
->auth
.auth_level
== DCERPC_AUTH_LEVEL_PRIVACY
?
458 DCERPC_AUTH_LEVEL_PRIVACY
: DCERPC_AUTH_LEVEL_INTEGRITY
,
461 if (!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
,
462 &p
->out_data
.frag
, 0)) {
463 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_AUTH.\n"));
464 prs_mem_free(&p
->out_data
.frag
);
468 data
= (uint8_t *)prs_data_p(&p
->out_data
.frag
) + data_pos
;
470 switch (p
->auth
.auth_level
) {
471 case DCERPC_AUTH_LEVEL_PRIVACY
:
472 status
= netsec_outgoing_packet(p
->auth
.a_u
.schannel_auth
,
476 data_len
+ ss_padding_len
,
479 case DCERPC_AUTH_LEVEL_INTEGRITY
:
480 status
= netsec_outgoing_packet(p
->auth
.a_u
.schannel_auth
,
484 data_len
+ ss_padding_len
,
488 status
= NT_STATUS_INTERNAL_ERROR
;
492 if (!NT_STATUS_IS_OK(status
)) {
493 DEBUG(0,("create_next_pdu_schannel: failed to process packet: %s\n",
495 prs_mem_free(&p
->out_data
.frag
);
499 /* Finally marshall the blob. */
501 if (DEBUGLEVEL
>= 10) {
502 dump_NL_AUTH_SIGNATURE(talloc_tos(), &blob
);
505 if (!prs_copy_data_in(&p
->out_data
.frag
, (const char *)blob
.data
, blob
.length
)) {
506 prs_mem_free(&p
->out_data
.frag
);
512 * Setup the counts for this PDU.
515 p
->out_data
.data_sent_length
+= data_len
;
516 p
->out_data
.current_pdu_sent
= 0;
521 /*******************************************************************
522 Generate the next PDU to be returned from the data in p->rdata.
523 No authentication done.
524 ********************************************************************/
526 static bool create_next_pdu_noauth(pipes_struct
*p
)
531 RPC_HDR_RESP hdr_resp
;
533 uint32 data_space_available
;
534 uint32 data_len_left
;
537 * If we're in the fault state, keep returning fault PDU's until
538 * the pipe gets closed. JRA.
542 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
546 memset((char *)&hdr_resp
, '\0', sizeof(hdr_resp
));
548 /* Set up rpc header flags. */
549 if (p
->out_data
.data_sent_length
== 0) {
550 hdr_flags
= DCERPC_PFC_FLAG_FIRST
;
556 * Work out how much we can fit in a single PDU.
559 data_len_left
= prs_offset(&p
->out_data
.rdata
) - p
->out_data
.data_sent_length
;
562 * Ensure there really is data left to send.
566 DEBUG(0,("create_next_pdu_noath: no data left to send !\n"));
570 data_space_available
= RPC_MAX_PDU_FRAG_LEN
- RPC_HEADER_LEN
574 * The amount we send is the minimum of the available
575 * space and the amount left to send.
578 data_len
= MIN(data_len_left
, data_space_available
);
581 * Set up the alloc hint. This should be the data left to
585 hdr_resp
.alloc_hint
= data_len_left
;
588 * Work out if this PDU will be the last.
590 if(p
->out_data
.data_sent_length
+ data_len
>= prs_offset(&p
->out_data
.rdata
)) {
591 hdr_flags
|= DCERPC_PFC_FLAG_LAST
;
595 * Init the parse struct to point at the outgoing
598 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
600 status
= dcerpc_push_ncacn_packet_header(
601 prs_get_mem_context(&p
->out_data
.frag
),
604 RPC_HEADER_LEN
+ RPC_HDR_RESP_LEN
+ data_len
,
608 if (!NT_STATUS_IS_OK(status
)) {
609 DEBUG(0, ("Failed to marshall RPC Header.\n"));
610 prs_mem_free(&p
->out_data
.frag
);
614 /* Store the header in the data stream. */
615 if (!prs_copy_data_in(&p
->out_data
.frag
,
616 (char *)hdr
.data
, hdr
.length
)) {
617 DEBUG(0, ("Out of memory.\n"));
618 prs_mem_free(&p
->out_data
.frag
);
622 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp
, &p
->out_data
.frag
, 0)) {
623 DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR_RESP.\n"));
624 prs_mem_free(&p
->out_data
.frag
);
628 /* Copy the data into the PDU. */
630 if(!prs_append_some_prs_data(&p
->out_data
.frag
, &p
->out_data
.rdata
,
631 p
->out_data
.data_sent_length
, data_len
)) {
632 DEBUG(0,("create_next_pdu_noauth: failed to copy %u bytes of data.\n", (unsigned int)data_len
));
633 prs_mem_free(&p
->out_data
.frag
);
638 * Setup the counts for this PDU.
641 p
->out_data
.data_sent_length
+= data_len
;
642 p
->out_data
.current_pdu_sent
= 0;
647 /*******************************************************************
648 Generate the next PDU to be returned from the data in p->rdata.
649 ********************************************************************/
651 bool create_next_pdu(pipes_struct
*p
)
653 switch(p
->auth
.auth_level
) {
654 case DCERPC_AUTH_LEVEL_NONE
:
655 case DCERPC_AUTH_LEVEL_CONNECT
:
656 /* This is incorrect for auth level connect. Fixme. JRA */
657 return create_next_pdu_noauth(p
);
660 switch(p
->auth
.auth_type
) {
661 case PIPE_AUTH_TYPE_NTLMSSP
:
662 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
:
663 return create_next_pdu_ntlmssp(p
);
664 case PIPE_AUTH_TYPE_SCHANNEL
:
665 return create_next_pdu_schannel(p
);
671 DEBUG(0,("create_next_pdu: invalid internal auth level %u / type %u",
672 (unsigned int)p
->auth
.auth_level
,
673 (unsigned int)p
->auth
.auth_type
));
677 /*******************************************************************
678 Process an NTLMSSP authentication response.
679 If this function succeeds, the user has been authenticated
680 and their domain, name and calling workstation stored in
682 *******************************************************************/
684 static bool pipe_ntlmssp_verify_final(pipes_struct
*p
, DATA_BLOB
*p_resp_blob
)
686 DATA_BLOB session_key
, reply
;
688 struct auth_ntlmssp_state
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
691 DEBUG(5,("pipe_ntlmssp_verify_final: pipe %s checking user details\n",
692 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
)));
696 /* this has to be done as root in order to verify the password */
698 status
= auth_ntlmssp_update(a
, *p_resp_blob
, &reply
);
701 /* Don't generate a reply. */
702 data_blob_free(&reply
);
704 if (!NT_STATUS_IS_OK(status
)) {
708 /* Finally - if the pipe negotiated integrity (sign) or privacy (seal)
709 ensure the underlying NTLMSSP flags are also set. If not we should
712 if (p
->auth
.auth_level
== DCERPC_AUTH_LEVEL_INTEGRITY
) {
713 if (!auth_ntlmssp_negotiated_sign(a
)) {
714 DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet integrity requested "
715 "but client declined signing.\n",
716 get_pipe_name_from_syntax(talloc_tos(),
721 if (p
->auth
.auth_level
== DCERPC_AUTH_LEVEL_PRIVACY
) {
722 if (!auth_ntlmssp_negotiated_seal(a
)) {
723 DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet privacy requested "
724 "but client declined sealing.\n",
725 get_pipe_name_from_syntax(talloc_tos(),
731 DEBUG(5, ("pipe_ntlmssp_verify_final: OK: user: %s domain: %s "
733 auth_ntlmssp_get_username(a
),
734 auth_ntlmssp_get_domain(a
),
735 auth_ntlmssp_get_client(a
)));
737 TALLOC_FREE(p
->server_info
);
739 p
->server_info
= auth_ntlmssp_server_info(p
, a
);
740 if (p
->server_info
== NULL
) {
741 DEBUG(0, ("auth_ntlmssp_server_info failed to obtain the server info for authenticated user\n"));
745 if (p
->server_info
->ptok
== NULL
) {
746 DEBUG(1,("Error: Authmodule failed to provide nt_user_token\n"));
751 * We're an authenticated bind over smb, so the session key needs to
752 * be set to "SystemLibraryDTC". Weird, but this is what Windows
753 * does. See the RPC-SAMBA3SESSIONKEY.
756 session_key
= generic_session_key();
757 if (session_key
.data
== NULL
) {
761 ret
= server_info_set_session_key(p
->server_info
, session_key
);
763 data_blob_free(&session_key
);
768 /*******************************************************************
769 This is the "stage3" NTLMSSP response after a bind request and reply.
770 *******************************************************************/
772 bool api_pipe_bind_auth3(pipes_struct
*p
, prs_struct
*rpc_in_p
)
774 struct dcerpc_auth auth_info
;
777 uint32_t auth_len
= p
->hdr
.auth_len
;
780 DEBUG(5,("api_pipe_bind_auth3: decode request. %d\n", __LINE__
));
783 DEBUG(0,("api_pipe_bind_auth3: No auth field sent !\n"));
787 /* 4 bytes padding. */
788 if (!prs_uint32("pad", rpc_in_p
, 0, &pad
)) {
789 DEBUG(0,("api_pipe_bind_auth3: unmarshall of 4 byte pad failed.\n"));
793 /* Ensure there's enough data for an authenticated request. */
794 if (RPC_HEADER_LEN
+ RPC_HDR_AUTH_LEN
+ auth_len
>
796 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len "
797 "%u is too large.\n",
798 (unsigned int)auth_len
));
803 * Decode the authentication verifier response.
806 /* Pull the auth header and the following data into a blob. */
807 /* NB. The offset of the auth_header is relative to the *end*
808 * of the packet, not the start. Also, the length of the
809 * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
810 * as the RPC header isn't included in rpc_in_p. */
811 if(!prs_set_offset(rpc_in_p
,
812 p
->hdr
.frag_len
- RPC_HEADER_LEN
-
813 RPC_HDR_AUTH_LEN
- auth_len
)) {
814 DEBUG(0,("api_pipe_bind_auth3: cannot move "
816 (unsigned int)(p
->hdr
.frag_len
-
817 RPC_HDR_AUTH_LEN
- auth_len
) ));
821 auth_blob
= data_blob_const(prs_data_p(rpc_in_p
)
822 + prs_offset(rpc_in_p
),
823 prs_data_size(rpc_in_p
)
824 - prs_offset(rpc_in_p
));
826 status
= dcerpc_pull_dcerpc_auth(prs_get_mem_context(rpc_in_p
),
827 &auth_blob
, &auth_info
);
828 if (!NT_STATUS_IS_OK(status
)) {
829 DEBUG(0, ("Failed to unmarshall dcerpc_auth.\n"));
833 /* We must NEVER look at auth_info->auth_pad_len here,
834 * as old Samba client code gets it wrong and sends it
838 if (auth_info
.auth_type
!= DCERPC_AUTH_TYPE_NTLMSSP
) {
839 DEBUG(0,("api_pipe_bind_auth3: incorrect auth type (%u).\n",
840 (unsigned int)auth_info
.auth_type
));
845 * The following call actually checks the challenge/response data.
846 * for correctness against the given DOMAIN\user name.
849 if (!pipe_ntlmssp_verify_final(p
, &auth_info
.credentials
)) {
853 p
->pipe_bound
= True
;
859 free_pipe_ntlmssp_auth_data(&p
->auth
);
860 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
865 /*******************************************************************
866 Marshall a bind_nak pdu.
867 *******************************************************************/
869 static bool setup_bind_nak(pipes_struct
*p
)
872 union dcerpc_payload u
;
875 /* Free any memory in the current return data buffer. */
876 prs_mem_free(&p
->out_data
.rdata
);
879 * Marshall directly into the outgoing PDU space. We
880 * must do this as we need to set to the bind response
881 * header and are never sending more than one PDU here.
884 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
887 * Initialize a bind_nak header.
892 u
.bind_nak
.reject_reason
= 0;
894 status
= dcerpc_push_ncacn_packet(p
->mem_ctx
,
896 DCERPC_PFC_FLAG_FIRST
|
897 DCERPC_PFC_FLAG_LAST
,
902 if (!NT_STATUS_IS_OK(status
)) {
903 prs_mem_free(&p
->out_data
.frag
);
907 if (!prs_copy_data_in(&p
->out_data
.frag
,
908 (char *)blob
.data
, blob
.length
)) {
909 prs_mem_free(&p
->out_data
.frag
);
913 p
->out_data
.data_sent_length
= 0;
914 p
->out_data
.current_pdu_sent
= 0;
916 if (p
->auth
.auth_data_free_func
) {
917 (*p
->auth
.auth_data_free_func
)(&p
->auth
);
919 p
->auth
.auth_level
= DCERPC_AUTH_LEVEL_NONE
;
920 p
->auth
.auth_type
= PIPE_AUTH_TYPE_NONE
;
921 p
->pipe_bound
= False
;
926 /*******************************************************************
927 Marshall a fault pdu.
928 *******************************************************************/
930 bool setup_fault_pdu(pipes_struct
*p
, NTSTATUS fault_status
)
933 union dcerpc_payload u
;
936 /* Free any memory in the current return data buffer. */
937 prs_mem_free(&p
->out_data
.rdata
);
940 * Marshall directly into the outgoing PDU space. We
941 * must do this as we need to set to the bind response
942 * header and are never sending more than one PDU here.
945 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
948 * Initialize a fault header.
953 u
.fault
.status
= NT_STATUS_V(fault_status
);
954 u
.fault
._pad
= data_blob_talloc_zero(p
->mem_ctx
, 4);
956 status
= dcerpc_push_ncacn_packet(p
->mem_ctx
,
958 DCERPC_PFC_FLAG_FIRST
|
959 DCERPC_PFC_FLAG_LAST
|
960 DCERPC_PFC_FLAG_DID_NOT_EXECUTE
,
965 if (!NT_STATUS_IS_OK(status
)) {
966 prs_mem_free(&p
->out_data
.frag
);
970 if (!prs_copy_data_in(&p
->out_data
.frag
,
971 (char *)blob
.data
, blob
.length
)) {
972 prs_mem_free(&p
->out_data
.frag
);
976 p
->out_data
.data_sent_length
= 0;
977 p
->out_data
.current_pdu_sent
= 0;
982 /*******************************************************************
983 Ensure a bind request has the correct abstract & transfer interface.
984 Used to reject unknown binds from Win2k.
985 *******************************************************************/
987 static bool check_bind_req(struct pipes_struct
*p
,
988 struct ndr_syntax_id
* abstract
,
989 struct ndr_syntax_id
* transfer
,
992 struct pipe_rpc_fns
*context_fns
;
994 DEBUG(3,("check_bind_req for %s\n",
995 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
)));
997 /* we have to check all now since win2k introduced a new UUID on the lsaprpc pipe */
998 if (rpc_srv_pipe_exists_by_id(abstract
) &&
999 ndr_syntax_id_equal(transfer
, &ndr_transfer_syntax
)) {
1000 DEBUG(3, ("check_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1001 rpc_srv_get_pipe_cli_name(abstract
),
1002 rpc_srv_get_pipe_srv_name(abstract
)));
1007 context_fns
= SMB_MALLOC_P(struct pipe_rpc_fns
);
1008 if (context_fns
== NULL
) {
1009 DEBUG(0,("check_bind_req: malloc() failed!\n"));
1013 context_fns
->n_cmds
= rpc_srv_get_pipe_num_cmds(abstract
);
1014 context_fns
->cmds
= rpc_srv_get_pipe_cmds(abstract
);
1015 context_fns
->context_id
= context_id
;
1017 /* add to the list of open contexts */
1019 DLIST_ADD( p
->contexts
, context_fns
);
1025 * Is a named pipe known?
1026 * @param[in] cli_filename The pipe name requested by the client
1027 * @result Do we want to serve this?
1029 bool is_known_pipename(const char *cli_filename
, struct ndr_syntax_id
*syntax
)
1031 const char *pipename
= cli_filename
;
1034 if (strnequal(pipename
, "\\PIPE\\", 6)) {
1038 if (*pipename
== '\\') {
1042 if (lp_disable_spoolss() && strequal(pipename
, "spoolss")) {
1043 DEBUG(10, ("refusing spoolss access\n"));
1047 if (rpc_srv_get_pipe_interface_by_cli_name(pipename
, syntax
)) {
1051 status
= smb_probe_module("rpc", pipename
);
1052 if (!NT_STATUS_IS_OK(status
)) {
1053 DEBUG(10, ("is_known_pipename: %s unknown\n", cli_filename
));
1056 DEBUG(10, ("is_known_pipename: %s loaded dynamically\n", pipename
));
1059 * Scan the list again for the interface id
1061 if (rpc_srv_get_pipe_interface_by_cli_name(pipename
, syntax
)) {
1065 DEBUG(10, ("is_known_pipename: pipe %s did not register itself!\n",
1071 /*******************************************************************
1072 Handle a SPNEGO krb5 bind auth.
1073 *******************************************************************/
1075 static bool pipe_spnego_auth_bind_kerberos(pipes_struct
*p
,
1076 prs_struct
*rpc_in_p
,
1077 struct dcerpc_auth
*pauth_info
,
1078 DATA_BLOB
*psecblob
,
1079 prs_struct
*pout_auth
)
1084 /*******************************************************************
1085 Handle the first part of a SPNEGO bind auth.
1086 *******************************************************************/
1088 static bool pipe_spnego_auth_bind_negotiate(pipes_struct
*p
,
1089 prs_struct
*rpc_in_p
,
1090 uint32_t ss_padding_len
,
1091 struct dcerpc_auth
*pauth_info
,
1092 prs_struct
*pout_auth
)
1098 char *OIDs
[ASN1_MAX_OIDS
];
1101 bool got_kerberos_mechanism
= false;
1102 struct auth_ntlmssp_state
*a
= NULL
;
1104 ZERO_STRUCT(secblob
);
1106 ZERO_STRUCT(response
);
1108 if (pauth_info
->credentials
.data
[0] != ASN1_APPLICATION(0)) {
1112 /* parse out the OIDs and the first sec blob */
1113 if (!parse_negTokenTarg(pauth_info
->credentials
, OIDs
, &secblob
)) {
1114 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to parse the security blob.\n"));
1118 if (strcmp(OID_KERBEROS5
, OIDs
[0]) == 0 || strcmp(OID_KERBEROS5_OLD
, OIDs
[0]) == 0) {
1119 got_kerberos_mechanism
= true;
1122 for (i
=0;OIDs
[i
];i
++) {
1123 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got OID %s\n", OIDs
[i
]));
1124 TALLOC_FREE(OIDs
[i
]);
1126 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got secblob of size %lu\n", (unsigned long)secblob
.length
));
1128 if ( got_kerberos_mechanism
&& ((lp_security()==SEC_ADS
) || USE_KERBEROS_KEYTAB
) ) {
1129 bool ret
= pipe_spnego_auth_bind_kerberos(p
, rpc_in_p
, pauth_info
, &secblob
, pout_auth
);
1130 data_blob_free(&secblob
);
1134 if (p
->auth
.auth_type
== PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
&& p
->auth
.a_u
.auth_ntlmssp_state
) {
1135 /* Free any previous auth type. */
1136 free_pipe_ntlmssp_auth_data(&p
->auth
);
1139 if (!got_kerberos_mechanism
) {
1140 /* Initialize the NTLM engine. */
1141 status
= auth_ntlmssp_start(&a
);
1142 if (!NT_STATUS_IS_OK(status
)) {
1146 switch (pauth_info
->auth_level
) {
1147 case DCERPC_AUTH_LEVEL_INTEGRITY
:
1148 auth_ntlmssp_want_sign(a
);
1150 case DCERPC_AUTH_LEVEL_PRIVACY
:
1151 auth_ntlmssp_want_seal(a
);
1157 * Pass the first security blob of data to it.
1158 * This can return an error or NT_STATUS_MORE_PROCESSING_REQUIRED
1159 * which means we need another packet to complete the bind.
1162 status
= auth_ntlmssp_update(a
, secblob
, &chal
);
1164 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
1165 DEBUG(3,("pipe_spnego_auth_bind_negotiate: auth_ntlmssp_update failed.\n"));
1169 /* Generate the response blob we need for step 2 of the bind. */
1170 response
= spnego_gen_auth_response(&chal
, status
, OID_NTLMSSP
);
1173 * SPNEGO negotiate down to NTLMSSP. The subsequent
1174 * code to process follow-up packets is not complete
1177 response
= spnego_gen_auth_response(NULL
,
1178 NT_STATUS_MORE_PROCESSING_REQUIRED
,
1182 /* auth_pad_len will be handled by the caller */
1184 status
= dcerpc_push_dcerpc_auth(prs_get_mem_context(pout_auth
),
1185 DCERPC_AUTH_TYPE_SPNEGO
,
1186 pauth_info
->auth_level
,
1188 1, /* auth_context_id */
1191 if (!NT_STATUS_IS_OK(status
)) {
1192 DEBUG(0, ("Marshalling of dcerpc_auth failed.\n"));
1196 /* Copy the blob into the pout_auth parse struct */
1197 if (!prs_copy_data_in(pout_auth
, (char *)blob
.data
, blob
.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(&secblob
);
1207 data_blob_free(&chal
);
1208 data_blob_free(&response
);
1210 /* We can't set pipe_bound True yet - we need an RPC_ALTER_CONTEXT response packet... */
1215 data_blob_free(&secblob
);
1216 data_blob_free(&chal
);
1217 data_blob_free(&response
);
1219 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
1224 /*******************************************************************
1225 Handle the second part of a SPNEGO bind auth.
1226 *******************************************************************/
1228 static bool pipe_spnego_auth_bind_continue(pipes_struct
*p
, prs_struct
*rpc_in_p
,
1229 uint32_t ss_padding_len
,
1230 RPC_HDR_AUTH
*pauth_info
, prs_struct
*pout_auth
)
1232 RPC_HDR_AUTH auth_info
;
1233 DATA_BLOB spnego_blob
;
1234 DATA_BLOB auth_blob
;
1235 DATA_BLOB auth_reply
;
1237 struct auth_ntlmssp_state
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
1239 ZERO_STRUCT(spnego_blob
);
1240 ZERO_STRUCT(auth_blob
);
1241 ZERO_STRUCT(auth_reply
);
1242 ZERO_STRUCT(response
);
1245 * NB. If we've negotiated down from krb5 to NTLMSSP we'll currently
1246 * fail here as 'a' == NULL.
1248 if (p
->auth
.auth_type
!= PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
|| !a
) {
1249 DEBUG(0,("pipe_spnego_auth_bind_continue: not in NTLMSSP auth state.\n"));
1253 /* Grab the SPNEGO blob. */
1254 spnego_blob
= data_blob(NULL
,p
->hdr
.auth_len
);
1256 if (!prs_copy_data_out((char *)spnego_blob
.data
, rpc_in_p
, p
->hdr
.auth_len
)) {
1257 DEBUG(0,("pipe_spnego_auth_bind_continue: Failed to pull %u bytes - the SPNEGO auth header.\n",
1258 (unsigned int)p
->hdr
.auth_len
));
1262 if (spnego_blob
.data
[0] != ASN1_CONTEXT(1)) {
1263 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob type.\n"));
1267 if (!spnego_parse_auth(spnego_blob
, &auth_blob
)) {
1268 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob.\n"));
1273 * The following call actually checks the challenge/response data.
1274 * for correctness against the given DOMAIN\user name.
1277 if (!pipe_ntlmssp_verify_final(p
, &auth_blob
)) {
1281 data_blob_free(&spnego_blob
);
1282 data_blob_free(&auth_blob
);
1284 /* Generate the spnego "accept completed" blob - no incoming data. */
1285 response
= spnego_gen_auth_response(&auth_reply
, NT_STATUS_OK
, OID_NTLMSSP
);
1287 /* FIXME - add auth_pad_len here ! */
1289 /* Copy the blob into the pout_auth parse struct */
1290 init_rpc_hdr_auth(&auth_info
, DCERPC_AUTH_TYPE_SPNEGO
,
1291 pauth_info
->auth_level
, ss_padding_len
, 1);
1292 if(!smb_io_rpc_hdr_auth("", &auth_info
, pout_auth
, 0)) {
1293 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of RPC_HDR_AUTH failed.\n"));
1297 if (!prs_copy_data_in(pout_auth
, (char *)response
.data
, response
.length
)) {
1298 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of data blob failed.\n"));
1302 data_blob_free(&auth_reply
);
1303 data_blob_free(&response
);
1305 p
->pipe_bound
= True
;
1311 data_blob_free(&spnego_blob
);
1312 data_blob_free(&auth_blob
);
1313 data_blob_free(&auth_reply
);
1314 data_blob_free(&response
);
1316 free_pipe_ntlmssp_auth_data(&p
->auth
);
1317 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
1322 /*******************************************************************
1323 Handle an schannel bind auth.
1324 *******************************************************************/
1326 static bool pipe_schannel_auth_bind(pipes_struct
*p
,
1327 prs_struct
*rpc_in_p
,
1328 uint32_t ss_padding_len
,
1329 struct dcerpc_auth
*auth_info
,
1330 prs_struct
*pout_auth
)
1332 DATA_BLOB auth_blob
;
1333 struct NL_AUTH_MESSAGE neg
;
1334 struct NL_AUTH_MESSAGE reply
;
1337 struct netlogon_creds_CredentialState
*creds
;
1338 DATA_BLOB session_key
;
1339 enum ndr_err_code ndr_err
;
1342 ndr_err
= ndr_pull_struct_blob(
1343 &auth_info
->credentials
,
1344 prs_get_mem_context(pout_auth
), &neg
,
1345 (ndr_pull_flags_fn_t
)ndr_pull_NL_AUTH_MESSAGE
);
1346 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
1347 DEBUG(0,("pipe_schannel_auth_bind: Could not unmarshal SCHANNEL auth neg\n"));
1351 if (DEBUGLEVEL
>= 10) {
1352 NDR_PRINT_DEBUG(NL_AUTH_MESSAGE
, &neg
);
1355 if (!(neg
.Flags
& NL_FLAG_OEM_NETBIOS_COMPUTER_NAME
)) {
1356 DEBUG(0,("pipe_schannel_auth_bind: Did not receive netbios computer name\n"));
1361 * The neg.oem_netbios_computer.a key here must match the remote computer name
1362 * given in the DOM_CLNT_SRV.uni_comp_name used on all netlogon pipe
1363 * operations that use credentials.
1367 status
= schannel_get_creds_state(p
, lp_private_dir(),
1368 neg
.oem_netbios_computer
.a
, &creds
);
1371 if (!NT_STATUS_IS_OK(status
)) {
1372 DEBUG(0, ("pipe_schannel_auth_bind: Attempt to bind using schannel without successful serverauth2\n"));
1376 p
->auth
.a_u
.schannel_auth
= talloc(p
, struct schannel_state
);
1377 if (!p
->auth
.a_u
.schannel_auth
) {
1382 p
->auth
.a_u
.schannel_auth
->state
= SCHANNEL_STATE_START
;
1383 p
->auth
.a_u
.schannel_auth
->seq_num
= 0;
1384 p
->auth
.a_u
.schannel_auth
->initiator
= false;
1385 p
->auth
.a_u
.schannel_auth
->creds
= creds
;
1388 * JRA. Should we also copy the schannel session key into the pipe session key p->session_key
1389 * here ? We do that for NTLMSSP, but the session key is already set up from the vuser
1390 * struct of the person who opened the pipe. I need to test this further. JRA.
1392 * VL. As we are mapping this to guest set the generic key
1393 * "SystemLibraryDTC" key here. It's a bit difficult to test against
1394 * W2k3, as it does not allow schannel binds against SAMR and LSA
1398 session_key
= generic_session_key();
1399 if (session_key
.data
== NULL
) {
1400 DEBUG(0, ("pipe_schannel_auth_bind: Could not alloc session"
1405 ret
= server_info_set_session_key(p
->server_info
, session_key
);
1407 data_blob_free(&session_key
);
1410 DEBUG(0, ("server_info_set_session_key failed\n"));
1414 /*** SCHANNEL verifier ***/
1416 reply
.MessageType
= NL_NEGOTIATE_RESPONSE
;
1418 reply
.Buffer
.dummy
= 5; /* ??? actually I don't think
1419 * this has any meaning
1422 ndr_err
= ndr_push_struct_blob(&auth_blob
, talloc_tos(), &reply
,
1423 (ndr_push_flags_fn_t
)ndr_push_NL_AUTH_MESSAGE
);
1424 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
1425 DEBUG(0,("Failed to marshall NL_AUTH_MESSAGE.\n"));
1429 if (DEBUGLEVEL
>= 10) {
1430 NDR_PRINT_DEBUG(NL_AUTH_MESSAGE
, &reply
);
1433 status
= dcerpc_push_dcerpc_auth(prs_get_mem_context(pout_auth
),
1434 DCERPC_AUTH_TYPE_SCHANNEL
,
1435 auth_info
->auth_level
,
1437 1, /* auth_context_id */
1440 if (!NT_STATUS_IS_OK(status
)) {
1441 DEBUG(0, ("Marshalling of dcerpc_auth failed.\n"));
1445 if (!prs_copy_data_in(pout_auth
, (const char *)blob
.data
, blob
.length
)) {
1449 DEBUG(10,("pipe_schannel_auth_bind: schannel auth: domain [%s] myname [%s]\n",
1450 neg
.oem_netbios_domain
.a
, neg
.oem_netbios_computer
.a
));
1452 /* We're finished with this bind - no more packets. */
1453 p
->auth
.auth_data_free_func
= NULL
;
1454 p
->auth
.auth_type
= PIPE_AUTH_TYPE_SCHANNEL
;
1456 p
->pipe_bound
= True
;
1461 /*******************************************************************
1462 Handle an NTLMSSP bind auth.
1463 *******************************************************************/
1465 static bool pipe_ntlmssp_auth_bind(pipes_struct
*p
,
1466 prs_struct
*rpc_in_p
,
1467 uint32_t ss_padding_len
,
1468 struct dcerpc_auth
*auth_info
,
1469 prs_struct
*pout_auth
)
1474 struct auth_ntlmssp_state
*a
= NULL
;
1476 ZERO_STRUCT(response
);
1478 if (strncmp((char *)auth_info
->credentials
.data
, "NTLMSSP", 7) != 0) {
1479 DEBUG(0, ("Failed to read NTLMSSP in blob\n"));
1483 /* We have an NTLMSSP blob. */
1484 status
= auth_ntlmssp_start(&a
);
1485 if (!NT_STATUS_IS_OK(status
)) {
1486 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_start failed: %s\n",
1487 nt_errstr(status
) ));
1491 switch (auth_info
->auth_level
) {
1492 case DCERPC_AUTH_LEVEL_INTEGRITY
:
1493 auth_ntlmssp_want_sign(a
);
1495 case DCERPC_AUTH_LEVEL_PRIVACY
:
1496 auth_ntlmssp_want_seal(a
);
1502 status
= auth_ntlmssp_update(a
, auth_info
->credentials
, &response
);
1503 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
1504 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_update failed: %s\n",
1505 nt_errstr(status
) ));
1509 status
= dcerpc_push_dcerpc_auth(prs_get_mem_context(pout_auth
),
1510 DCERPC_AUTH_TYPE_NTLMSSP
,
1511 auth_info
->auth_level
,
1513 1, /* auth_context_id */
1516 if (!NT_STATUS_IS_OK(status
)) {
1517 DEBUG(0, ("Marshalling of dcerpc_auth failed.\n"));
1521 /* Copy the blob into the pout_auth parse struct */
1522 if (!prs_copy_data_in(pout_auth
, (char *)blob
.data
, blob
.length
)) {
1523 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of data blob failed.\n"));
1527 p
->auth
.a_u
.auth_ntlmssp_state
= a
;
1528 p
->auth
.auth_data_free_func
= &free_pipe_ntlmssp_auth_data
;
1529 p
->auth
.auth_type
= PIPE_AUTH_TYPE_NTLMSSP
;
1531 data_blob_free(&response
);
1533 DEBUG(10,("pipe_ntlmssp_auth_bind: NTLMSSP auth started\n"));
1535 /* We can't set pipe_bound True yet - we need an DCERPC_PKT_AUTH3 response packet... */
1540 data_blob_free(&response
);
1542 free_pipe_ntlmssp_auth_data(&p
->auth
);
1543 p
->auth
.a_u
.auth_ntlmssp_state
= NULL
;
1547 /*******************************************************************
1548 Respond to a pipe bind request.
1549 *******************************************************************/
1551 bool api_pipe_bind_req(pipes_struct
*p
, prs_struct
*rpc_in_p
)
1554 struct dcerpc_bind rpc_bind
;
1556 struct dcerpc_auth auth_info
;
1557 DATA_BLOB auth_blob
;
1559 fstring ack_pipe_name
;
1560 prs_struct out_hdr_ba
;
1561 prs_struct out_auth
;
1563 unsigned int auth_type
= DCERPC_AUTH_TYPE_NONE
;
1564 uint32_t ss_padding_len
= 0;
1566 struct ndr_syntax_id id
;
1568 /* No rebinds on a bound pipe - use alter context. */
1569 if (p
->pipe_bound
) {
1570 DEBUG(2,("api_pipe_bind_req: rejecting bind request on bound "
1572 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
)));
1573 return setup_bind_nak(p
);
1576 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
1579 * Marshall directly into the outgoing PDU space. We
1580 * must do this as we need to set to the bind response
1581 * header and are never sending more than one PDU here.
1585 * Setup the memory to marshall the ba header, and the
1589 if(!prs_init(&out_hdr_ba
, 1024, p
->mem_ctx
, MARSHALL
)) {
1590 DEBUG(0,("api_pipe_bind_req: malloc out_hdr_ba failed.\n"));
1591 prs_mem_free(&p
->out_data
.frag
);
1595 if(!prs_init(&out_auth
, 1024, p
->mem_ctx
, MARSHALL
)) {
1596 DEBUG(0,("api_pipe_bind_req: malloc out_auth failed.\n"));
1597 prs_mem_free(&p
->out_data
.frag
);
1598 prs_mem_free(&out_hdr_ba
);
1602 DEBUG(5,("api_pipe_bind_req: decode request. %d\n", __LINE__
));
1604 /* decode the bind request */
1605 blob_rb
= data_blob_const(prs_data_p(rpc_in_p
),
1606 prs_data_size(rpc_in_p
));
1607 status
= dcerpc_pull_dcerpc_bind(talloc_tos(), &blob_rb
, &rpc_bind
);
1608 if (!NT_STATUS_IS_OK(status
)) {
1612 if (rpc_bind
.num_contexts
== 0) {
1613 DEBUG(0, ("api_pipe_bind_req: no rpc contexts around\n"));
1618 * Try and find the correct pipe name to ensure
1619 * that this is a pipe name we support.
1621 id
= rpc_bind
.ctx_list
[0].abstract_syntax
;
1622 if (rpc_srv_pipe_exists_by_id(&id
)) {
1623 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1624 rpc_srv_get_pipe_cli_name(&id
),
1625 rpc_srv_get_pipe_srv_name(&id
)));
1627 status
= smb_probe_module(
1628 "rpc", get_pipe_name_from_syntax(
1630 &rpc_bind
.ctx_list
[0].abstract_syntax
));
1632 if (NT_STATUS_IS_ERR(status
)) {
1633 DEBUG(3,("api_pipe_bind_req: Unknown pipe name %s in bind request.\n",
1634 get_pipe_name_from_syntax(
1636 &rpc_bind
.ctx_list
[0].abstract_syntax
)));
1637 prs_mem_free(&p
->out_data
.frag
);
1638 prs_mem_free(&out_hdr_ba
);
1639 prs_mem_free(&out_auth
);
1641 return setup_bind_nak(p
);
1644 if (rpc_srv_get_pipe_interface_by_cli_name(
1645 get_pipe_name_from_syntax(talloc_tos(),
1648 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1649 rpc_srv_get_pipe_cli_name(&id
),
1650 rpc_srv_get_pipe_srv_name(&id
)));
1652 DEBUG(0, ("module %s doesn't provide functions for "
1654 get_pipe_name_from_syntax(talloc_tos(),
1656 get_pipe_name_from_syntax(talloc_tos(),
1662 /* name has to be \PIPE\xxxxx */
1663 fstrcpy(ack_pipe_name
, "\\PIPE\\");
1664 fstrcat(ack_pipe_name
, rpc_srv_get_pipe_srv_name(&id
));
1666 DEBUG(5,("api_pipe_bind_req: make response. %d\n", __LINE__
));
1668 if (rpc_bind
.assoc_group_id
!= 0) {
1669 assoc_gid
= rpc_bind
.assoc_group_id
;
1676 * Create the bind response struct.
1679 /* If the requested abstract synt uuid doesn't match our client pipe,
1680 reject the bind_ack & set the transfer interface synt to all 0's,
1681 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1683 Needed when adding entries to a DACL from NT5 - SK */
1685 if (check_bind_req(p
,
1686 &rpc_bind
.ctx_list
[0].abstract_syntax
,
1687 &rpc_bind
.ctx_list
[0].transfer_syntaxes
[0],
1688 rpc_bind
.ctx_list
[0].context_id
)) {
1689 init_rpc_hdr_ba(&hdr_ba
,
1690 RPC_MAX_PDU_FRAG_LEN
,
1691 RPC_MAX_PDU_FRAG_LEN
,
1695 &rpc_bind
.ctx_list
[0].transfer_syntaxes
[0]);
1697 /* Rejection reason: abstract syntax not supported */
1698 init_rpc_hdr_ba(&hdr_ba
, RPC_MAX_PDU_FRAG_LEN
,
1699 RPC_MAX_PDU_FRAG_LEN
, assoc_gid
,
1700 ack_pipe_name
, 0x1, 0x2, 0x1,
1701 &null_ndr_syntax_id
);
1702 p
->pipe_bound
= False
;
1709 if(!smb_io_rpc_hdr_ba("", &hdr_ba
, &out_hdr_ba
, 0)) {
1710 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR_BA failed.\n"));
1715 * Check if this is an authenticated bind request.
1718 if (p
->hdr
.auth_len
) {
1720 * Decode the authentication verifier.
1723 /* Work out any padding needed before the auth footer. */
1724 if ((RPC_HEADER_LEN
+ prs_offset(&out_hdr_ba
)) % SERVER_NDR_PADDING_SIZE
) {
1725 ss_padding_len
= SERVER_NDR_PADDING_SIZE
-
1726 ((RPC_HEADER_LEN
+ prs_offset(&out_hdr_ba
)) % SERVER_NDR_PADDING_SIZE
);
1727 DEBUG(10,("api_pipe_bind_req: auth pad_len = %u\n",
1728 (unsigned int)ss_padding_len
));
1731 /* Quick length check. Won't catch a bad auth footer,
1732 * prevents overrun. */
1734 if (p
->hdr
.frag_len
< RPC_HEADER_LEN
+ RPC_HDR_AUTH_LEN
+ p
->hdr
.auth_len
) {
1735 DEBUG(0,("api_pipe_bind_req: auth_len (%u) "
1736 "too long for fragment %u.\n",
1737 (unsigned int)p
->hdr
.auth_len
,
1738 (unsigned int)p
->hdr
.frag_len
));
1742 /* Pull the auth header and the following data into a blob. */
1743 /* NB. The offset of the auth_header is relative to the *end*
1744 * of the packet, not the start. Also, the length of the
1745 * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
1746 * as the RPC header isn't included in rpc_in_p. */
1747 if(!prs_set_offset(rpc_in_p
,
1748 p
->hdr
.frag_len
- RPC_HEADER_LEN
-
1749 RPC_HDR_AUTH_LEN
- p
->hdr
.auth_len
)) {
1750 DEBUG(0,("api_pipe_bind_req: cannot move "
1752 (unsigned int)(p
->hdr
.frag_len
-
1753 RPC_HDR_AUTH_LEN
- p
->hdr
.auth_len
) ));
1757 auth_blob
= data_blob_const(prs_data_p(rpc_in_p
)
1758 + prs_offset(rpc_in_p
),
1759 prs_data_size(rpc_in_p
)
1760 - prs_offset(rpc_in_p
));
1762 status
= dcerpc_pull_dcerpc_auth(prs_get_mem_context(rpc_in_p
),
1763 &auth_blob
, &auth_info
);
1764 if (!NT_STATUS_IS_OK(status
)) {
1765 DEBUG(0, ("Unable to unmarshall dcerpc_auth.\n"));
1769 auth_type
= auth_info
.auth_type
;
1771 /* Work out if we have to sign or seal etc. */
1772 switch (auth_info
.auth_level
) {
1773 case DCERPC_AUTH_LEVEL_INTEGRITY
:
1774 p
->auth
.auth_level
= DCERPC_AUTH_LEVEL_INTEGRITY
;
1776 case DCERPC_AUTH_LEVEL_PRIVACY
:
1777 p
->auth
.auth_level
= DCERPC_AUTH_LEVEL_PRIVACY
;
1780 DEBUG(0, ("Unexpected auth level (%u).\n",
1781 (unsigned int)auth_info
.auth_level
));
1785 ZERO_STRUCT(auth_info
);
1789 case DCERPC_AUTH_TYPE_NTLMSSP
:
1790 if (!pipe_ntlmssp_auth_bind(p
, rpc_in_p
,
1791 ss_padding_len
, &auth_info
, &out_auth
)) {
1797 case DCERPC_AUTH_TYPE_SCHANNEL
:
1798 if (!pipe_schannel_auth_bind(p
, rpc_in_p
,
1799 ss_padding_len
, &auth_info
, &out_auth
)) {
1804 case DCERPC_AUTH_TYPE_SPNEGO
:
1805 if (!pipe_spnego_auth_bind_negotiate(p
, rpc_in_p
,
1806 ss_padding_len
, &auth_info
, &out_auth
)) {
1811 case DCERPC_AUTH_TYPE_NONE
:
1812 /* Unauthenticated bind request. */
1813 /* We're finished - no more packets. */
1814 p
->auth
.auth_type
= PIPE_AUTH_TYPE_NONE
;
1815 /* We must set the pipe auth_level here also. */
1816 p
->auth
.auth_level
= DCERPC_AUTH_LEVEL_NONE
;
1817 p
->pipe_bound
= True
;
1818 /* The session key was initialized from the SMB
1819 * session in make_internal_rpc_pipe_p */
1824 DEBUG(0,("api_pipe_bind_req: unknown auth type %x requested.\n", auth_type
));
1828 * Create the header, now we know the length.
1831 if (prs_offset(&out_auth
)) {
1832 auth_len
= prs_offset(&out_auth
) - RPC_HDR_AUTH_LEN
;
1835 init_rpc_hdr(&p
->hdr
, DCERPC_PKT_BIND_ACK
, DCERPC_PFC_FLAG_FIRST
| DCERPC_PFC_FLAG_LAST
,
1837 RPC_HEADER_LEN
+ prs_offset(&out_hdr_ba
) +
1838 ss_padding_len
+ prs_offset(&out_auth
),
1842 * Marshall the header into the outgoing PDU.
1845 if(!smb_io_rpc_hdr("", &p
->hdr
, &p
->out_data
.frag
, 0)) {
1846 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR failed.\n"));
1851 * Now add the RPC_HDR_BA and any auth needed.
1854 if(!prs_append_prs_data(&p
->out_data
.frag
, &out_hdr_ba
)) {
1855 DEBUG(0,("api_pipe_bind_req: append of RPC_HDR_BA failed.\n"));
1860 if (ss_padding_len
) {
1861 char pad
[SERVER_NDR_PADDING_SIZE
];
1862 memset(pad
, '\0', SERVER_NDR_PADDING_SIZE
);
1863 if (!prs_copy_data_in(&p
->out_data
.frag
, pad
,
1865 DEBUG(0,("api_pipe_bind_req: failed to add %u "
1866 "bytes of pad data.\n",
1867 (unsigned int)ss_padding_len
));
1872 if (!prs_append_prs_data( &p
->out_data
.frag
, &out_auth
)) {
1873 DEBUG(0,("api_pipe_bind_req: append of auth info failed.\n"));
1879 * Setup the lengths for the initial reply.
1882 p
->out_data
.data_sent_length
= 0;
1883 p
->out_data
.current_pdu_sent
= 0;
1885 prs_mem_free(&out_hdr_ba
);
1886 prs_mem_free(&out_auth
);
1892 prs_mem_free(&p
->out_data
.frag
);
1893 prs_mem_free(&out_hdr_ba
);
1894 prs_mem_free(&out_auth
);
1895 return setup_bind_nak(p
);
1898 /****************************************************************************
1899 Deal with an alter context call. Can be third part of 3 leg auth request for
1901 ****************************************************************************/
1903 bool api_pipe_alter_context(pipes_struct
*p
, prs_struct
*rpc_in_p
)
1906 struct dcerpc_bind rpc_bind
;
1908 RPC_HDR_AUTH auth_info
;
1910 fstring ack_pipe_name
;
1911 prs_struct out_hdr_ba
;
1912 prs_struct out_auth
;
1914 uint32_t ss_padding_len
= 0;
1917 prs_init_empty(&p
->out_data
.frag
, p
->mem_ctx
, MARSHALL
);
1920 * Marshall directly into the outgoing PDU space. We
1921 * must do this as we need to set to the bind response
1922 * header and are never sending more than one PDU here.
1926 * Setup the memory to marshall the ba header, and the
1930 if(!prs_init(&out_hdr_ba
, 1024, p
->mem_ctx
, MARSHALL
)) {
1931 DEBUG(0,("api_pipe_alter_context: malloc out_hdr_ba failed.\n"));
1932 prs_mem_free(&p
->out_data
.frag
);
1936 if(!prs_init(&out_auth
, 1024, p
->mem_ctx
, MARSHALL
)) {
1937 DEBUG(0,("api_pipe_alter_context: malloc out_auth failed.\n"));
1938 prs_mem_free(&p
->out_data
.frag
);
1939 prs_mem_free(&out_hdr_ba
);
1943 DEBUG(5,("api_pipe_alter_context: decode request. %d\n", __LINE__
));
1945 /* decode the alter context request */
1946 blob_rb
= data_blob_const(prs_data_p(rpc_in_p
),
1947 prs_data_size(rpc_in_p
));
1948 status
= dcerpc_pull_dcerpc_bind(talloc_tos(), &blob_rb
, &rpc_bind
);
1949 if (!NT_STATUS_IS_OK(status
)) {
1953 /* secondary address CAN be NULL
1954 * as the specs say it's ignored.
1955 * It MUST be NULL to have the spoolss working.
1957 fstrcpy(ack_pipe_name
,"");
1959 DEBUG(5,("api_pipe_alter_context: make response. %d\n", __LINE__
));
1961 if (rpc_bind
.assoc_group_id
!= 0) {
1962 assoc_gid
= rpc_bind
.assoc_group_id
;
1968 * Create the bind response struct.
1971 /* If the requested abstract synt uuid doesn't match our client pipe,
1972 reject the bind_ack & set the transfer interface synt to all 0's,
1973 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1975 Needed when adding entries to a DACL from NT5 - SK */
1977 if (check_bind_req(p
,
1978 &rpc_bind
.ctx_list
[0].abstract_syntax
,
1979 &rpc_bind
.ctx_list
[0].transfer_syntaxes
[0],
1980 rpc_bind
.ctx_list
[0].context_id
)) {
1981 init_rpc_hdr_ba(&hdr_ba
,
1982 RPC_MAX_PDU_FRAG_LEN
,
1983 RPC_MAX_PDU_FRAG_LEN
,
1987 &rpc_bind
.ctx_list
[0].transfer_syntaxes
[0]);
1989 /* Rejection reason: abstract syntax not supported */
1990 init_rpc_hdr_ba(&hdr_ba
, RPC_MAX_PDU_FRAG_LEN
,
1991 RPC_MAX_PDU_FRAG_LEN
, assoc_gid
,
1992 ack_pipe_name
, 0x1, 0x2, 0x1,
1993 &null_ndr_syntax_id
);
1994 p
->pipe_bound
= False
;
2001 if(!smb_io_rpc_hdr_ba("", &hdr_ba
, &out_hdr_ba
, 0)) {
2002 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR_BA failed.\n"));
2008 * Check if this is an authenticated alter context request.
2011 if (p
->hdr
.auth_len
!= 0) {
2013 * Decode the authentication verifier.
2016 /* Work out any padding needed before the auth footer. */
2017 if ((RPC_HEADER_LEN
+ prs_offset(&out_hdr_ba
)) % SERVER_NDR_PADDING_SIZE
) {
2018 ss_padding_len
= SERVER_NDR_PADDING_SIZE
-
2019 ((RPC_HEADER_LEN
+ prs_offset(&out_hdr_ba
)) % SERVER_NDR_PADDING_SIZE
);
2020 DEBUG(10,("api_pipe_alter_context: auth pad_len = %u\n",
2021 (unsigned int)ss_padding_len
));
2024 /* Quick length check. Won't catch a bad auth footer,
2025 * prevents overrun. */
2027 if (p
->hdr
.frag_len
< RPC_HEADER_LEN
+ RPC_HDR_AUTH_LEN
+ p
->hdr
.auth_len
) {
2028 DEBUG(0,("api_pipe_alter_context: auth_len (%u) "
2029 "too long for fragment %u.\n",
2030 (unsigned int)p
->hdr
.auth_len
,
2031 (unsigned int)p
->hdr
.frag_len
));
2035 /* Pull the auth header and the following data into a blob. */
2036 /* NB. The offset of the auth_header is relative to the *end*
2037 * of the packet, not the start. Also, the length of the
2038 * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
2039 * as the RPC header isn't included in rpc_in_p. */
2040 if(!prs_set_offset(rpc_in_p
,
2041 p
->hdr
.frag_len
- RPC_HEADER_LEN
-
2042 RPC_HDR_AUTH_LEN
- p
->hdr
.auth_len
)) {
2043 DEBUG(0,("api_alter_context: cannot move "
2045 (unsigned int)(p
->hdr
.frag_len
-
2046 RPC_HDR_AUTH_LEN
- p
->hdr
.auth_len
) ));
2050 if(!smb_io_rpc_hdr_auth("", &auth_info
, rpc_in_p
, 0)) {
2051 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_AUTH struct.\n"));
2056 * Currently only the SPNEGO auth type uses the alter ctx
2057 * response in place of the NTLMSSP auth3 type.
2060 if (auth_info
.auth_type
== DCERPC_AUTH_TYPE_SPNEGO
) {
2061 /* We can only finish if the pipe is unbound. */
2062 if (!p
->pipe_bound
) {
2063 if (!pipe_spnego_auth_bind_continue(p
, rpc_in_p
,
2064 ss_padding_len
, &auth_info
, &out_auth
)) {
2072 ZERO_STRUCT(auth_info
);
2075 * Create the header, now we know the length.
2078 if (prs_offset(&out_auth
)) {
2079 auth_len
= prs_offset(&out_auth
) - RPC_HDR_AUTH_LEN
;
2082 init_rpc_hdr(&p
->hdr
, DCERPC_PKT_ALTER_RESP
, DCERPC_PFC_FLAG_FIRST
| DCERPC_PFC_FLAG_LAST
,
2084 RPC_HEADER_LEN
+ prs_offset(&out_hdr_ba
) + prs_offset(&out_auth
),
2088 * Marshall the header into the outgoing PDU.
2091 if(!smb_io_rpc_hdr("", &p
->hdr
, &p
->out_data
.frag
, 0)) {
2092 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR failed.\n"));
2097 * Now add the RPC_HDR_BA and any auth needed.
2100 if(!prs_append_prs_data(&p
->out_data
.frag
, &out_hdr_ba
)) {
2101 DEBUG(0,("api_pipe_alter_context: append of RPC_HDR_BA failed.\n"));
2106 if (ss_padding_len
) {
2107 char pad
[SERVER_NDR_PADDING_SIZE
];
2108 memset(pad
, '\0', SERVER_NDR_PADDING_SIZE
);
2109 if (!prs_copy_data_in(&p
->out_data
.frag
, pad
,
2111 DEBUG(0,("api_pipe_alter_context: failed to add %u "
2112 "bytes of pad data.\n",
2113 (unsigned int)ss_padding_len
));
2118 if (!prs_append_prs_data( &p
->out_data
.frag
, &out_auth
)) {
2119 DEBUG(0,("api_pipe_alter_context: append of auth info failed.\n"));
2125 * Setup the lengths for the initial reply.
2128 p
->out_data
.data_sent_length
= 0;
2129 p
->out_data
.current_pdu_sent
= 0;
2131 prs_mem_free(&out_hdr_ba
);
2132 prs_mem_free(&out_auth
);
2137 prs_mem_free(&p
->out_data
.frag
);
2138 prs_mem_free(&out_hdr_ba
);
2139 prs_mem_free(&out_auth
);
2140 return setup_bind_nak(p
);
2143 /****************************************************************************
2144 Deal with NTLMSSP sign & seal processing on an RPC request.
2145 ****************************************************************************/
2147 bool api_pipe_ntlmssp_auth_process(pipes_struct
*p
, prs_struct
*rpc_in
,
2148 uint32
*p_ss_padding_len
, NTSTATUS
*pstatus
)
2150 RPC_HDR_AUTH auth_info
;
2151 uint32 auth_len
= p
->hdr
.auth_len
;
2152 uint32 save_offset
= prs_offset(rpc_in
);
2153 struct auth_ntlmssp_state
*a
= p
->auth
.a_u
.auth_ntlmssp_state
;
2154 unsigned char *data
= NULL
;
2156 unsigned char *full_packet_data
= NULL
;
2157 size_t full_packet_data_len
;
2158 DATA_BLOB auth_blob
;
2160 *pstatus
= NT_STATUS_OK
;
2162 if (p
->auth
.auth_level
== DCERPC_AUTH_LEVEL_NONE
|| p
->auth
.auth_level
== DCERPC_AUTH_LEVEL_CONNECT
) {
2167 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2171 /* Ensure there's enough data for an authenticated request. */
2172 if (RPC_HEADER_LEN
+ RPC_HDR_REQ_LEN
+ RPC_HDR_AUTH_LEN
2173 + auth_len
> p
->hdr
.frag_len
) {
2174 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len %u is too large.\n",
2175 (unsigned int)auth_len
));
2176 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2181 * We need the full packet data + length (minus auth stuff) as well as the packet data + length
2182 * after the RPC header.
2183 * We need to pass in the full packet (minus auth len) to the NTLMSSP sign and check seal
2184 * functions as NTLMv2 checks the rpc headers also.
2185 * Both of these values include any auth_pad_len bytes.
2188 data
= (unsigned char *)(prs_data_p(rpc_in
) + RPC_HDR_REQ_LEN
);
2189 data_len
= (size_t)(p
->hdr
.frag_len
- RPC_HEADER_LEN
- RPC_HDR_REQ_LEN
- RPC_HDR_AUTH_LEN
- auth_len
);
2191 full_packet_data
= p
->in_data
.pdu
.data
;
2192 full_packet_data_len
= p
->hdr
.frag_len
- auth_len
;
2194 /* Pull the auth header and the following data into a blob. */
2195 /* NB. The offset of the auth_header is relative to the *end*
2196 * of the packet, not the start. Also, the length of the
2197 * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
2198 * as the RPC header isn't included in rpc_in_p. */
2199 if(!prs_set_offset(rpc_in
,
2200 p
->hdr
.frag_len
- RPC_HEADER_LEN
-
2201 RPC_HDR_AUTH_LEN
- auth_len
)) {
2202 DEBUG(0,("api_pipe_ntlmssp_auth_process: cannot move "
2204 (unsigned int)(p
->hdr
.frag_len
-
2205 RPC_HDR_AUTH_LEN
- auth_len
) ));
2206 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2210 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
, rpc_in
, 0)) {
2211 DEBUG(0,("api_pipe_ntlmssp_auth_process: failed to "
2212 "unmarshall RPC_HDR_AUTH.\n"));
2213 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2217 /* Ensure auth_pad_len fits into the packet. */
2218 if (RPC_HEADER_LEN
+ RPC_HDR_REQ_LEN
+ auth_info
.auth_pad_len
+
2219 RPC_HDR_AUTH_LEN
+ auth_len
> p
->hdr
.frag_len
) {
2220 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_info.auth_pad_len "
2221 "too large (%u), auth_len (%u), frag_len = (%u).\n",
2222 (unsigned int)auth_info
.auth_pad_len
,
2223 (unsigned int)auth_len
,
2224 (unsigned int)p
->hdr
.frag_len
));
2225 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2229 auth_blob
.data
= (unsigned char *)prs_data_p(rpc_in
) + prs_offset(rpc_in
);
2230 auth_blob
.length
= auth_len
;
2232 switch (p
->auth
.auth_level
) {
2233 case DCERPC_AUTH_LEVEL_PRIVACY
:
2234 /* Data is encrypted. */
2235 *pstatus
= auth_ntlmssp_unseal_packet(a
,
2238 full_packet_data_len
,
2240 if (!NT_STATUS_IS_OK(*pstatus
)) {
2244 case DCERPC_AUTH_LEVEL_INTEGRITY
:
2245 /* Data is signed. */
2246 *pstatus
= auth_ntlmssp_check_packet(a
,
2249 full_packet_data_len
,
2251 if (!NT_STATUS_IS_OK(*pstatus
)) {
2256 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2261 * Return the current pointer to the data offset.
2264 if(!prs_set_offset(rpc_in
, save_offset
)) {
2265 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
2266 (unsigned int)save_offset
));
2267 *pstatus
= NT_STATUS_INVALID_PARAMETER
;
2272 * Remember the padding length. We must remove it from the real data
2273 * stream once the sign/seal is done.
2276 *p_ss_padding_len
= auth_info
.auth_pad_len
;
2281 /****************************************************************************
2282 Deal with schannel processing on an RPC request.
2283 ****************************************************************************/
2285 bool api_pipe_schannel_process(pipes_struct
*p
, prs_struct
*rpc_in
, uint32
*p_ss_padding_len
)
2289 uint32 save_offset
= prs_offset(rpc_in
);
2290 RPC_HDR_AUTH auth_info
;
2295 auth_len
= p
->hdr
.auth_len
;
2297 if (auth_len
< RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN
||
2298 auth_len
> RPC_HEADER_LEN
+
2302 DEBUG(0,("Incorrect auth_len %u.\n", (unsigned int)auth_len
));
2307 * The following is that length of the data we must verify or unseal.
2308 * This doesn't include the RPC headers or the auth_len or the RPC_HDR_AUTH_LEN
2309 * preceeding the auth_data, but does include the auth_pad_len bytes.
2312 if (p
->hdr
.frag_len
< RPC_HEADER_LEN
+ RPC_HDR_REQ_LEN
+ RPC_HDR_AUTH_LEN
+ auth_len
) {
2313 DEBUG(0,("Incorrect frag %u, auth %u.\n",
2314 (unsigned int)p
->hdr
.frag_len
,
2315 (unsigned int)auth_len
));
2319 data_len
= p
->hdr
.frag_len
- RPC_HEADER_LEN
- RPC_HDR_REQ_LEN
-
2320 RPC_HDR_AUTH_LEN
- auth_len
;
2322 DEBUG(5,("data %d auth %d\n", data_len
, auth_len
));
2324 /* Pull the auth header and the following data into a blob. */
2325 /* NB. The offset of the auth_header is relative to the *end*
2326 * of the packet, not the start. Also, the length of the
2327 * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
2328 * as the RPC header isn't included in rpc_in_p. */
2329 if(!prs_set_offset(rpc_in
,
2330 p
->hdr
.frag_len
- RPC_HEADER_LEN
-
2331 RPC_HDR_AUTH_LEN
- auth_len
)) {
2332 DEBUG(0,("api_pipe_schannel_process: cannot move "
2334 (unsigned int)(p
->hdr
.frag_len
-
2335 RPC_HDR_AUTH_LEN
- auth_len
) ));
2339 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info
, rpc_in
, 0)) {
2340 DEBUG(0,("api_pipe_schannel_process: failed to "
2341 "unmarshall RPC_HDR_AUTH.\n"));
2345 /* Ensure auth_pad_len fits into the packet. */
2346 if (RPC_HEADER_LEN
+ RPC_HDR_REQ_LEN
+ auth_info
.auth_pad_len
+
2347 RPC_HDR_AUTH_LEN
+ auth_len
> p
->hdr
.frag_len
) {
2348 DEBUG(0,("api_pipe_schannel_process: auth_info.auth_pad_len "
2349 "too large (%u), auth_len (%u), frag_len = (%u).\n",
2350 (unsigned int)auth_info
.auth_pad_len
,
2351 (unsigned int)auth_len
,
2352 (unsigned int)p
->hdr
.frag_len
));
2356 if (auth_info
.auth_type
!= DCERPC_AUTH_TYPE_SCHANNEL
) {
2357 DEBUG(0,("Invalid auth info %d on schannel\n",
2358 auth_info
.auth_type
));
2362 blob
= data_blob_const(prs_data_p(rpc_in
) + prs_offset(rpc_in
), auth_len
);
2364 if (DEBUGLEVEL
>= 10) {
2365 dump_NL_AUTH_SIGNATURE(talloc_tos(), &blob
);
2368 data
= (uint8_t *)prs_data_p(rpc_in
)+RPC_HDR_REQ_LEN
;
2370 switch (auth_info
.auth_level
) {
2371 case DCERPC_AUTH_LEVEL_PRIVACY
:
2372 status
= netsec_incoming_packet(p
->auth
.a_u
.schannel_auth
,
2379 case DCERPC_AUTH_LEVEL_INTEGRITY
:
2380 status
= netsec_incoming_packet(p
->auth
.a_u
.schannel_auth
,
2388 status
= NT_STATUS_INTERNAL_ERROR
;
2392 if (!NT_STATUS_IS_OK(status
)) {
2393 DEBUG(0,("failed to unseal packet: %s\n", nt_errstr(status
)));
2398 * Return the current pointer to the data offset.
2401 if(!prs_set_offset(rpc_in
, save_offset
)) {
2402 DEBUG(0,("failed to set offset back to %u\n",
2403 (unsigned int)save_offset
));
2408 * Remember the padding length. We must remove it from the real data
2409 * stream once the sign/seal is done.
2412 *p_ss_padding_len
= auth_info
.auth_pad_len
;
2417 /****************************************************************************
2418 Find the set of RPC functions associated with this context_id
2419 ****************************************************************************/
2421 static PIPE_RPC_FNS
* find_pipe_fns_by_context( PIPE_RPC_FNS
*list
, uint32 context_id
)
2423 PIPE_RPC_FNS
*fns
= NULL
;
2426 DEBUG(0,("find_pipe_fns_by_context: ERROR! No context list for pipe!\n"));
2430 for (fns
=list
; fns
; fns
=fns
->next
) {
2431 if ( fns
->context_id
== context_id
)
2437 /****************************************************************************
2439 ****************************************************************************/
2441 void free_pipe_rpc_context( PIPE_RPC_FNS
*list
)
2443 PIPE_RPC_FNS
*tmp
= list
;
2455 static bool api_rpcTNP(pipes_struct
*p
,
2456 const struct api_struct
*api_rpc_cmds
, int n_cmds
);
2458 /****************************************************************************
2459 Find the correct RPC function to call for this request.
2460 If the pipe is authenticated then become the correct UNIX user
2461 before doing the call.
2462 ****************************************************************************/
2464 bool api_pipe_request(pipes_struct
*p
)
2467 bool changed_user
= False
;
2468 PIPE_RPC_FNS
*pipe_fns
;
2470 if (p
->pipe_bound
&&
2471 ((p
->auth
.auth_type
== PIPE_AUTH_TYPE_NTLMSSP
) ||
2472 (p
->auth
.auth_type
== PIPE_AUTH_TYPE_SPNEGO_NTLMSSP
))) {
2473 if(!become_authenticated_pipe_user(p
)) {
2474 prs_mem_free(&p
->out_data
.rdata
);
2477 changed_user
= True
;
2480 DEBUG(5, ("Requested \\PIPE\\%s\n",
2481 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
)));
2483 /* get the set of RPC functions for this context */
2485 pipe_fns
= find_pipe_fns_by_context(p
->contexts
, p
->hdr_req
.context_id
);
2488 TALLOC_CTX
*frame
= talloc_stackframe();
2489 ret
= api_rpcTNP(p
, pipe_fns
->cmds
, pipe_fns
->n_cmds
);
2493 DEBUG(0,("api_pipe_request: No rpc function table associated with context [%d] on pipe [%s]\n",
2494 p
->hdr_req
.context_id
,
2495 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
)));
2499 unbecome_authenticated_pipe_user();
2505 /*******************************************************************
2506 Calls the underlying RPC function for a named pipe.
2507 ********************************************************************/
2509 static bool api_rpcTNP(pipes_struct
*p
,
2510 const struct api_struct
*api_rpc_cmds
, int n_cmds
)
2513 uint32 offset1
, offset2
;
2515 /* interpret the command */
2516 DEBUG(4,("api_rpcTNP: %s op 0x%x - ",
2517 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
),
2520 if (DEBUGLEVEL
>= 50) {
2522 slprintf(name
, sizeof(name
)-1, "in_%s",
2523 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
));
2524 prs_dump(name
, p
->hdr_req
.opnum
, &p
->in_data
.data
);
2527 for (fn_num
= 0; fn_num
< n_cmds
; fn_num
++) {
2528 if (api_rpc_cmds
[fn_num
].opnum
== p
->hdr_req
.opnum
&& api_rpc_cmds
[fn_num
].fn
!= NULL
) {
2529 DEBUG(3,("api_rpcTNP: rpc command: %s\n", api_rpc_cmds
[fn_num
].name
));
2534 if (fn_num
== n_cmds
) {
2536 * For an unknown RPC just return a fault PDU but
2537 * return True to allow RPC's on the pipe to continue
2538 * and not put the pipe into fault state. JRA.
2540 DEBUG(4, ("unknown\n"));
2541 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
2545 offset1
= prs_offset(&p
->out_data
.rdata
);
2547 DEBUG(6, ("api_rpc_cmds[%d].fn == %p\n",
2548 fn_num
, api_rpc_cmds
[fn_num
].fn
));
2549 /* do the actual command */
2550 if(!api_rpc_cmds
[fn_num
].fn(p
)) {
2551 DEBUG(0,("api_rpcTNP: %s: %s failed.\n",
2552 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
),
2553 api_rpc_cmds
[fn_num
].name
));
2554 prs_mem_free(&p
->out_data
.rdata
);
2558 if (p
->bad_handle_fault_state
) {
2559 DEBUG(4,("api_rpcTNP: bad handle fault return.\n"));
2560 p
->bad_handle_fault_state
= False
;
2561 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_CONTEXT_MISMATCH
));
2565 if (p
->rng_fault_state
) {
2566 DEBUG(4, ("api_rpcTNP: rng fault return\n"));
2567 p
->rng_fault_state
= False
;
2568 setup_fault_pdu(p
, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR
));
2572 offset2
= prs_offset(&p
->out_data
.rdata
);
2573 prs_set_offset(&p
->out_data
.rdata
, offset1
);
2574 if (DEBUGLEVEL
>= 50) {
2576 slprintf(name
, sizeof(name
)-1, "out_%s",
2577 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
));
2578 prs_dump(name
, p
->hdr_req
.opnum
, &p
->out_data
.rdata
);
2580 prs_set_offset(&p
->out_data
.rdata
, offset2
);
2582 DEBUG(5,("api_rpcTNP: called %s successfully\n",
2583 get_pipe_name_from_syntax(talloc_tos(), &p
->syntax
)));
2585 /* Check for buffer underflow in rpc parsing */
2587 if ((DEBUGLEVEL
>= 10) &&
2588 (prs_offset(&p
->in_data
.data
) != prs_data_size(&p
->in_data
.data
))) {
2589 size_t data_len
= prs_data_size(&p
->in_data
.data
) - prs_offset(&p
->in_data
.data
);
2590 char *data
= (char *)SMB_MALLOC(data_len
);
2592 DEBUG(10, ("api_rpcTNP: rpc input buffer underflow (parse error?)\n"));
2594 prs_uint8s(False
, "", &p
->in_data
.data
, 0, (unsigned char *)data
, (uint32
)data_len
);