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 /* Set up for non-authenticated user. */
618 TALLOC_FREE(p->pipe_user.nt_user_token);
619 p->pipe_user.ut.ngroups = 0;
620 SAFE_FREE( p->pipe_user.ut.groups);
622 /* this has to be done as root in order to verify the password */
624 status = auth_ntlmssp_update(a, *p_resp_blob, &reply);
627 /* Don't generate a reply. */
628 data_blob_free(&reply);
630 if (!NT_STATUS_IS_OK(status)) {
634 /* Finally - if the pipe negotiated integrity (sign) or privacy (seal)
635 ensure the underlying NTLMSSP flags are also set. If not we should
638 if (p->auth.auth_level == PIPE_AUTH_LEVEL_INTEGRITY) {
639 if (!(a->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN)) {
640 DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet integrity requested "
641 "but client declined signing.\n",
646 if (p->auth.auth_level == PIPE_AUTH_LEVEL_PRIVACY) {
647 if (!(a->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL)) {
648 DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet privacy requested "
649 "but client declined sealing.\n",
655 DEBUG(5, ("pipe_ntlmssp_verify_final: OK: user: %s domain: %s "
656 "workstation: %s\n", a->ntlmssp_state->user,
657 a->ntlmssp_state->domain, a->ntlmssp_state->workstation));
660 * Store the UNIX credential data (uid/gid pair) in the pipe structure.
663 p->pipe_user.ut.uid = a->server_info->utok.uid;
664 p->pipe_user.ut.gid = a->server_info->utok.gid;
667 * We're an authenticated bind over smbd, so the session key needs to
668 * be set to "SystemLibraryDTC". Weird, but this is what Windows
669 * does. See the RPC-SAMBA3SESSIONKEY.
672 data_blob_free(&p->session_key);
673 p->session_key = generic_session_key();
674 if (!p->session_key.data) {
678 p->pipe_user.ut.ngroups = a->server_info->utok.ngroups;
679 if (p->pipe_user.ut.ngroups) {
680 if (!(p->pipe_user.ut.groups = (gid_t *)memdup(
681 a->server_info->utok.groups,
682 sizeof(gid_t) * p->pipe_user.ut.ngroups))) {
683 DEBUG(0,("failed to memdup group list to p->pipe_user.groups\n"));
688 if (a->server_info->ptok) {
689 p->pipe_user.nt_user_token =
690 dup_nt_token(NULL, a->server_info->ptok);
692 DEBUG(1,("Error: Authmodule failed to provide nt_user_token\n"));
693 p->pipe_user.nt_user_token = NULL;
700 /*******************************************************************
701 The switch table for the pipe names and the functions to handle them.
702 *******************************************************************/
709 const struct api_struct *cmds;
713 static struct rpc_table *rpc_lookup;
714 static int rpc_lookup_size;
716 /*******************************************************************
717 This is the "stage3" NTLMSSP response after a bind request and reply.
718 *******************************************************************/
720 bool api_pipe_bind_auth3(pipes_struct *p, prs_struct *rpc_in_p)
722 RPC_HDR_AUTH auth_info;
728 DEBUG(5,("api_pipe_bind_auth3: decode request. %d\n", __LINE__));
730 if (p->hdr.auth_len == 0) {
731 DEBUG(0,("api_pipe_bind_auth3: No auth field sent !\n"));
735 /* 4 bytes padding. */
736 if (!prs_uint32("pad", rpc_in_p, 0, &pad)) {
737 DEBUG(0,("api_pipe_bind_auth3: unmarshall of 4 byte pad failed.\n"));
742 * Decode the authentication verifier response.
745 if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
746 DEBUG(0,("api_pipe_bind_auth3: unmarshall of RPC_HDR_AUTH failed.\n"));
750 if (auth_info.auth_type != RPC_NTLMSSP_AUTH_TYPE) {
751 DEBUG(0,("api_pipe_bind_auth3: incorrect auth type (%u).\n",
752 (unsigned int)auth_info.auth_type ));
756 blob = data_blob(NULL,p->hdr.auth_len);
758 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
759 DEBUG(0,("api_pipe_bind_auth3: Failed to pull %u bytes - the response blob.\n",
760 (unsigned int)p->hdr.auth_len ));
765 * The following call actually checks the challenge/response data.
766 * for correctness against the given DOMAIN\user name.
769 if (!pipe_ntlmssp_verify_final(p, &blob)) {
773 data_blob_free(&blob);
775 p->pipe_bound = True;
781 data_blob_free(&blob);
782 free_pipe_ntlmssp_auth_data(&p->auth);
783 p->auth.a_u.auth_ntlmssp_state = NULL;
788 /*******************************************************************
789 Marshall a bind_nak pdu.
790 *******************************************************************/
792 static bool setup_bind_nak(pipes_struct *p)
794 prs_struct outgoing_rpc;
798 /* Free any memory in the current return data buffer. */
799 prs_mem_free(&p->out_data.rdata);
802 * Marshall directly into the outgoing PDU space. We
803 * must do this as we need to set to the bind response
804 * header and are never sending more than one PDU here.
807 prs_init_empty( &outgoing_rpc, p->mem_ctx, MARSHALL);
808 prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
811 * Initialize a bind_nak header.
814 init_rpc_hdr(&nak_hdr, RPC_BINDNACK, RPC_FLG_FIRST | RPC_FLG_LAST,
815 p->hdr.call_id, RPC_HEADER_LEN + sizeof(uint16), 0);
818 * Marshall the header into the outgoing PDU.
821 if(!smb_io_rpc_hdr("", &nak_hdr, &outgoing_rpc, 0)) {
822 DEBUG(0,("setup_bind_nak: marshalling of RPC_HDR failed.\n"));
823 prs_mem_free(&outgoing_rpc);
828 * Now add the reject reason.
831 if(!prs_uint16("reject code", &outgoing_rpc, 0, &zero)) {
832 prs_mem_free(&outgoing_rpc);
836 p->out_data.data_sent_length = 0;
837 p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
838 p->out_data.current_pdu_sent = 0;
840 if (p->auth.auth_data_free_func) {
841 (*p->auth.auth_data_free_func)(&p->auth);
843 p->auth.auth_level = PIPE_AUTH_LEVEL_NONE;
844 p->auth.auth_type = PIPE_AUTH_TYPE_NONE;
845 p->pipe_bound = False;
850 /*******************************************************************
851 Marshall a fault pdu.
852 *******************************************************************/
854 bool setup_fault_pdu(pipes_struct *p, NTSTATUS status)
856 prs_struct outgoing_pdu;
858 RPC_HDR_RESP hdr_resp;
859 RPC_HDR_FAULT fault_resp;
861 /* Free any memory in the current return data buffer. */
862 prs_mem_free(&p->out_data.rdata);
865 * Marshall directly into the outgoing PDU space. We
866 * must do this as we need to set to the bind response
867 * header and are never sending more than one PDU here.
870 prs_init_empty( &outgoing_pdu, p->mem_ctx, MARSHALL);
871 prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
874 * Initialize a fault header.
877 init_rpc_hdr(&fault_hdr, RPC_FAULT, RPC_FLG_FIRST | RPC_FLG_LAST | RPC_FLG_NOCALL,
878 p->hdr.call_id, RPC_HEADER_LEN + RPC_HDR_RESP_LEN + RPC_HDR_FAULT_LEN, 0);
881 * Initialize the HDR_RESP and FAULT parts of the PDU.
884 memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
886 fault_resp.status = status;
887 fault_resp.reserved = 0;
890 * Marshall the header into the outgoing PDU.
893 if(!smb_io_rpc_hdr("", &fault_hdr, &outgoing_pdu, 0)) {
894 DEBUG(0,("setup_fault_pdu: marshalling of RPC_HDR failed.\n"));
895 prs_mem_free(&outgoing_pdu);
899 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &outgoing_pdu, 0)) {
900 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_RESP.\n"));
901 prs_mem_free(&outgoing_pdu);
905 if(!smb_io_rpc_hdr_fault("fault", &fault_resp, &outgoing_pdu, 0)) {
906 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_FAULT.\n"));
907 prs_mem_free(&outgoing_pdu);
911 p->out_data.data_sent_length = 0;
912 p->out_data.current_pdu_len = prs_offset(&outgoing_pdu);
913 p->out_data.current_pdu_sent = 0;
915 prs_mem_free(&outgoing_pdu);
920 /*******************************************************************
921 Marshall a cancel_ack pdu.
922 We should probably check the auth-verifier here.
923 *******************************************************************/
925 bool setup_cancel_ack_reply(pipes_struct *p, prs_struct *rpc_in_p)
927 prs_struct outgoing_pdu;
928 RPC_HDR ack_reply_hdr;
930 /* Free any memory in the current return data buffer. */
931 prs_mem_free(&p->out_data.rdata);
934 * Marshall directly into the outgoing PDU space. We
935 * must do this as we need to set to the bind response
936 * header and are never sending more than one PDU here.
939 prs_init_empty( &outgoing_pdu, p->mem_ctx, MARSHALL);
940 prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
943 * Initialize a cancel_ack header.
946 init_rpc_hdr(&ack_reply_hdr, RPC_CANCEL_ACK, RPC_FLG_FIRST | RPC_FLG_LAST,
947 p->hdr.call_id, RPC_HEADER_LEN, 0);
950 * Marshall the header into the outgoing PDU.
953 if(!smb_io_rpc_hdr("", &ack_reply_hdr, &outgoing_pdu, 0)) {
954 DEBUG(0,("setup_cancel_ack_reply: marshalling of RPC_HDR failed.\n"));
955 prs_mem_free(&outgoing_pdu);
959 p->out_data.data_sent_length = 0;
960 p->out_data.current_pdu_len = prs_offset(&outgoing_pdu);
961 p->out_data.current_pdu_sent = 0;
963 prs_mem_free(&outgoing_pdu);
968 /*******************************************************************
969 Ensure a bind request has the correct abstract & transfer interface.
970 Used to reject unknown binds from Win2k.
971 *******************************************************************/
973 bool check_bind_req(struct pipes_struct *p, RPC_IFACE* abstract,
974 RPC_IFACE* transfer, uint32 context_id)
976 char *pipe_name = p->name;
980 fstrcpy(pname,"\\PIPE\\");
981 fstrcat(pname,pipe_name);
983 DEBUG(3,("check_bind_req for %s\n", pname));
985 /* we have to check all now since win2k introduced a new UUID on the lsaprpc pipe */
987 for ( i=0; pipe_names[i].client_pipe; i++ ) {
988 DEBUGADD(10,("checking %s\n", pipe_names[i].client_pipe));
989 if ( strequal(pipe_names[i].client_pipe, pname)
990 && (abstract->if_version == pipe_names[i].abstr_syntax->if_version)
991 && (memcmp(&abstract->uuid, &pipe_names[i].abstr_syntax->uuid, sizeof(struct GUID)) == 0)
992 && (transfer->if_version == pipe_names[i].trans_syntax->if_version)
993 && (memcmp(&transfer->uuid, &pipe_names[i].trans_syntax->uuid, sizeof(struct GUID)) == 0) ) {
994 struct api_struct *fns = NULL;
996 PIPE_RPC_FNS *context_fns;
998 if ( !(context_fns = SMB_MALLOC_P(PIPE_RPC_FNS)) ) {
999 DEBUG(0,("check_bind_req: malloc() failed!\n"));
1003 /* save the RPC function table associated with this bind */
1005 get_pipe_fns(i, &fns, &n_fns);
1007 context_fns->cmds = fns;
1008 context_fns->n_cmds = n_fns;
1009 context_fns->context_id = context_id;
1011 /* add to the list of open contexts */
1013 DLIST_ADD( p->contexts, context_fns );
1019 if(pipe_names[i].client_pipe == NULL) {
1026 /*******************************************************************
1027 Register commands to an RPC pipe
1028 *******************************************************************/
1030 NTSTATUS rpc_pipe_register_commands(int version, const char *clnt, const char *srv, const struct api_struct *cmds, int size)
1032 struct rpc_table *rpc_entry;
1034 if (!clnt || !srv || !cmds) {
1035 return NT_STATUS_INVALID_PARAMETER;
1038 if (version != SMB_RPC_INTERFACE_VERSION) {
1039 DEBUG(0,("Can't register rpc commands!\n"
1040 "You tried to register a rpc module with SMB_RPC_INTERFACE_VERSION %d"
1041 ", while this version of samba uses version %d!\n",
1042 version,SMB_RPC_INTERFACE_VERSION));
1043 return NT_STATUS_OBJECT_TYPE_MISMATCH;
1048 * we still need to make sure that don't register the same commands twice!!!
1053 /* We use a temporary variable because this call can fail and
1054 rpc_lookup will still be valid afterwards. It could then succeed if
1055 called again later */
1057 rpc_entry = SMB_REALLOC_ARRAY_KEEP_OLD_ON_ERROR(rpc_lookup, struct rpc_table, rpc_lookup_size);
1058 if (NULL == rpc_entry) {
1060 DEBUG(0, ("rpc_pipe_register_commands: memory allocation failed\n"));
1061 return NT_STATUS_NO_MEMORY;
1063 rpc_lookup = rpc_entry;
1066 rpc_entry = rpc_lookup + (rpc_lookup_size - 1);
1067 ZERO_STRUCTP(rpc_entry);
1068 rpc_entry->pipe.clnt = SMB_STRDUP(clnt);
1069 rpc_entry->pipe.srv = SMB_STRDUP(srv);
1070 rpc_entry->cmds = cmds;
1071 rpc_entry->n_cmds = size;
1073 return NT_STATUS_OK;
1076 /*******************************************************************
1077 Handle a SPNEGO krb5 bind auth.
1078 *******************************************************************/
1080 static bool pipe_spnego_auth_bind_kerberos(pipes_struct *p, prs_struct *rpc_in_p, RPC_HDR_AUTH *pauth_info,
1081 DATA_BLOB *psecblob, prs_struct *pout_auth)
1086 /*******************************************************************
1087 Handle the first part of a SPNEGO bind auth.
1088 *******************************************************************/
1090 static bool pipe_spnego_auth_bind_negotiate(pipes_struct *p, prs_struct *rpc_in_p,
1091 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1097 char *OIDs[ASN1_MAX_OIDS];
1100 bool got_kerberos_mechanism = false;
1101 AUTH_NTLMSSP_STATE *a = NULL;
1102 RPC_HDR_AUTH auth_info;
1104 ZERO_STRUCT(secblob);
1106 ZERO_STRUCT(response);
1108 /* Grab the SPNEGO blob. */
1109 blob = data_blob(NULL,p->hdr.auth_len);
1111 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
1112 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to pull %u bytes - the SPNEGO auth header.\n",
1113 (unsigned int)p->hdr.auth_len ));
1117 if (blob.data[0] != ASN1_APPLICATION(0)) {
1121 /* parse out the OIDs and the first sec blob */
1122 if (!parse_negTokenTarg(blob, OIDs, &secblob)) {
1123 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to parse the security blob.\n"));
1127 if (strcmp(OID_KERBEROS5, OIDs[0]) == 0 || strcmp(OID_KERBEROS5_OLD, OIDs[0]) == 0) {
1128 got_kerberos_mechanism = true;
1131 for (i=0;OIDs[i];i++) {
1132 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got OID %s\n", OIDs[i]));
1135 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got secblob of size %lu\n", (unsigned long)secblob.length));
1137 if ( got_kerberos_mechanism && ((lp_security()==SEC_ADS) || lp_use_kerberos_keytab()) ) {
1138 bool ret = pipe_spnego_auth_bind_kerberos(p, rpc_in_p, pauth_info, &secblob, pout_auth);
1139 data_blob_free(&secblob);
1140 data_blob_free(&blob);
1144 if (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP && p->auth.a_u.auth_ntlmssp_state) {
1145 /* Free any previous auth type. */
1146 free_pipe_ntlmssp_auth_data(&p->auth);
1149 if (!got_kerberos_mechanism) {
1150 /* Initialize the NTLM engine. */
1151 status = auth_ntlmssp_start(&a);
1152 if (!NT_STATUS_IS_OK(status)) {
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 /* Copy the blob into the pout_auth parse struct */
1183 init_rpc_hdr_auth(&auth_info, RPC_SPNEGO_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1184 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1185 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of RPC_HDR_AUTH failed.\n"));
1189 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1190 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of data blob failed.\n"));
1194 p->auth.a_u.auth_ntlmssp_state = a;
1195 p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
1196 p->auth.auth_type = PIPE_AUTH_TYPE_SPNEGO_NTLMSSP;
1198 data_blob_free(&blob);
1199 data_blob_free(&secblob);
1200 data_blob_free(&chal);
1201 data_blob_free(&response);
1203 /* We can't set pipe_bound True yet - we need an RPC_ALTER_CONTEXT response packet... */
1208 data_blob_free(&blob);
1209 data_blob_free(&secblob);
1210 data_blob_free(&chal);
1211 data_blob_free(&response);
1213 p->auth.a_u.auth_ntlmssp_state = NULL;
1218 /*******************************************************************
1219 Handle the second part of a SPNEGO bind auth.
1220 *******************************************************************/
1222 static bool pipe_spnego_auth_bind_continue(pipes_struct *p, prs_struct *rpc_in_p,
1223 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1225 RPC_HDR_AUTH auth_info;
1226 DATA_BLOB spnego_blob;
1227 DATA_BLOB auth_blob;
1228 DATA_BLOB auth_reply;
1230 AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
1232 ZERO_STRUCT(spnego_blob);
1233 ZERO_STRUCT(auth_blob);
1234 ZERO_STRUCT(auth_reply);
1235 ZERO_STRUCT(response);
1238 * NB. If we've negotiated down from krb5 to NTLMSSP we'll currently
1239 * fail here as 'a' == NULL.
1241 if (p->auth.auth_type != PIPE_AUTH_TYPE_SPNEGO_NTLMSSP || !a) {
1242 DEBUG(0,("pipe_spnego_auth_bind_continue: not in NTLMSSP auth state.\n"));
1246 /* Grab the SPNEGO blob. */
1247 spnego_blob = data_blob(NULL,p->hdr.auth_len);
1249 if (!prs_copy_data_out((char *)spnego_blob.data, rpc_in_p, p->hdr.auth_len)) {
1250 DEBUG(0,("pipe_spnego_auth_bind_continue: Failed to pull %u bytes - the SPNEGO auth header.\n",
1251 (unsigned int)p->hdr.auth_len ));
1255 if (spnego_blob.data[0] != ASN1_CONTEXT(1)) {
1256 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob type.\n"));
1260 if (!spnego_parse_auth(spnego_blob, &auth_blob)) {
1261 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob.\n"));
1266 * The following call actually checks the challenge/response data.
1267 * for correctness against the given DOMAIN\user name.
1270 if (!pipe_ntlmssp_verify_final(p, &auth_blob)) {
1274 data_blob_free(&spnego_blob);
1275 data_blob_free(&auth_blob);
1277 /* Generate the spnego "accept completed" blob - no incoming data. */
1278 response = spnego_gen_auth_response(&auth_reply, NT_STATUS_OK, OID_NTLMSSP);
1280 /* Copy the blob into the pout_auth parse struct */
1281 init_rpc_hdr_auth(&auth_info, RPC_SPNEGO_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1282 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1283 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of RPC_HDR_AUTH failed.\n"));
1287 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1288 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of data blob failed.\n"));
1292 data_blob_free(&auth_reply);
1293 data_blob_free(&response);
1295 p->pipe_bound = True;
1301 data_blob_free(&spnego_blob);
1302 data_blob_free(&auth_blob);
1303 data_blob_free(&auth_reply);
1304 data_blob_free(&response);
1306 free_pipe_ntlmssp_auth_data(&p->auth);
1307 p->auth.a_u.auth_ntlmssp_state = NULL;
1312 /*******************************************************************
1313 Handle an schannel bind auth.
1314 *******************************************************************/
1316 static bool pipe_schannel_auth_bind(pipes_struct *p, prs_struct *rpc_in_p,
1317 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1319 RPC_HDR_AUTH auth_info;
1320 RPC_AUTH_SCHANNEL_NEG neg;
1321 RPC_AUTH_VERIFIER auth_verifier;
1323 struct dcinfo *pdcinfo;
1326 if (!smb_io_rpc_auth_schannel_neg("", &neg, rpc_in_p, 0)) {
1327 DEBUG(0,("pipe_schannel_auth_bind: Could not unmarshal SCHANNEL auth neg\n"));
1332 * The neg.myname key here must match the remote computer name
1333 * given in the DOM_CLNT_SRV.uni_comp_name used on all netlogon pipe
1334 * operations that use credentials.
1338 ret = secrets_restore_schannel_session_info(p->mem_ctx, neg.myname, &pdcinfo);
1342 DEBUG(0, ("pipe_schannel_auth_bind: Attempt to bind using schannel without successful serverauth2\n"));
1346 p->auth.a_u.schannel_auth = talloc(p, struct schannel_auth_struct);
1347 if (!p->auth.a_u.schannel_auth) {
1348 TALLOC_FREE(pdcinfo);
1352 memset(p->auth.a_u.schannel_auth->sess_key, 0, sizeof(p->auth.a_u.schannel_auth->sess_key));
1353 memcpy(p->auth.a_u.schannel_auth->sess_key, pdcinfo->sess_key,
1354 sizeof(pdcinfo->sess_key));
1356 TALLOC_FREE(pdcinfo);
1358 p->auth.a_u.schannel_auth->seq_num = 0;
1361 * JRA. Should we also copy the schannel session key into the pipe session key p->session_key
1362 * here ? We do that for NTLMSSP, but the session key is already set up from the vuser
1363 * struct of the person who opened the pipe. I need to test this further. JRA.
1365 * VL. As we are mapping this to guest set the generic key
1366 * "SystemLibraryDTC" key here. It's a bit difficult to test against
1367 * W2k3, as it does not allow schannel binds against SAMR and LSA
1371 data_blob_free(&p->session_key);
1372 p->session_key = generic_session_key();
1373 if (p->session_key.data == NULL) {
1374 DEBUG(0, ("pipe_schannel_auth_bind: Could not alloc session"
1379 init_rpc_hdr_auth(&auth_info, RPC_SCHANNEL_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1380 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1381 DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1385 /*** SCHANNEL verifier ***/
1387 init_rpc_auth_verifier(&auth_verifier, "\001", 0x0);
1388 if(!smb_io_rpc_schannel_verifier("", &auth_verifier, pout_auth, 0)) {
1389 DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_AUTH_VERIFIER failed.\n"));
1393 prs_align(pout_auth);
1396 if(!prs_uint32("flags ", pout_auth, 0, &flags)) {
1400 DEBUG(10,("pipe_schannel_auth_bind: schannel auth: domain [%s] myname [%s]\n",
1401 neg.domain, neg.myname));
1403 /* We're finished with this bind - no more packets. */
1404 p->auth.auth_data_free_func = NULL;
1405 p->auth.auth_type = PIPE_AUTH_TYPE_SCHANNEL;
1407 p->pipe_bound = True;
1412 /*******************************************************************
1413 Handle an NTLMSSP bind auth.
1414 *******************************************************************/
1416 static bool pipe_ntlmssp_auth_bind(pipes_struct *p, prs_struct *rpc_in_p,
1417 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1419 RPC_HDR_AUTH auth_info;
1423 AUTH_NTLMSSP_STATE *a = NULL;
1426 ZERO_STRUCT(response);
1428 /* Grab the NTLMSSP blob. */
1429 blob = data_blob(NULL,p->hdr.auth_len);
1431 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
1432 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to pull %u bytes - the NTLM auth header.\n",
1433 (unsigned int)p->hdr.auth_len ));
1437 if (strncmp((char *)blob.data, "NTLMSSP", 7) != 0) {
1438 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to read NTLMSSP in blob\n"));
1442 /* We have an NTLMSSP blob. */
1443 status = auth_ntlmssp_start(&a);
1444 if (!NT_STATUS_IS_OK(status)) {
1445 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_start failed: %s\n",
1446 nt_errstr(status) ));
1450 status = auth_ntlmssp_update(a, blob, &response);
1451 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1452 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_update failed: %s\n",
1453 nt_errstr(status) ));
1457 data_blob_free(&blob);
1459 /* Copy the blob into the pout_auth parse struct */
1460 init_rpc_hdr_auth(&auth_info, RPC_NTLMSSP_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1461 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1462 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1466 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1467 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of data blob failed.\n"));
1471 p->auth.a_u.auth_ntlmssp_state = a;
1472 p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
1473 p->auth.auth_type = PIPE_AUTH_TYPE_NTLMSSP;
1475 data_blob_free(&blob);
1476 data_blob_free(&response);
1478 DEBUG(10,("pipe_ntlmssp_auth_bind: NTLMSSP auth started\n"));
1480 /* We can't set pipe_bound True yet - we need an RPC_AUTH3 response packet... */
1485 data_blob_free(&blob);
1486 data_blob_free(&response);
1488 free_pipe_ntlmssp_auth_data(&p->auth);
1489 p->auth.a_u.auth_ntlmssp_state = NULL;
1493 /*******************************************************************
1494 Respond to a pipe bind request.
1495 *******************************************************************/
1497 bool api_pipe_bind_req(pipes_struct *p, prs_struct *rpc_in_p)
1501 RPC_HDR_AUTH auth_info;
1503 fstring ack_pipe_name;
1504 prs_struct out_hdr_ba;
1505 prs_struct out_auth;
1506 prs_struct outgoing_rpc;
1509 unsigned int auth_type = RPC_ANONYMOUS_AUTH_TYPE;
1511 /* No rebinds on a bound pipe - use alter context. */
1512 if (p->pipe_bound) {
1513 DEBUG(2,("api_pipe_bind_req: rejecting bind request on bound pipe %s.\n", p->pipe_srv_name));
1514 return setup_bind_nak(p);
1517 prs_init_empty( &outgoing_rpc, p->mem_ctx, MARSHALL);
1520 * Marshall directly into the outgoing PDU space. We
1521 * must do this as we need to set to the bind response
1522 * header and are never sending more than one PDU here.
1525 prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
1528 * Setup the memory to marshall the ba header, and the
1532 if(!prs_init(&out_hdr_ba, 1024, p->mem_ctx, MARSHALL)) {
1533 DEBUG(0,("api_pipe_bind_req: malloc out_hdr_ba failed.\n"));
1534 prs_mem_free(&outgoing_rpc);
1538 if(!prs_init(&out_auth, 1024, p->mem_ctx, MARSHALL)) {
1539 DEBUG(0,("api_pipe_bind_req: malloc out_auth failed.\n"));
1540 prs_mem_free(&outgoing_rpc);
1541 prs_mem_free(&out_hdr_ba);
1545 DEBUG(5,("api_pipe_bind_req: decode request. %d\n", __LINE__));
1548 * Try and find the correct pipe name to ensure
1549 * that this is a pipe name we support.
1553 for (i = 0; i < rpc_lookup_size; i++) {
1554 if (strequal(rpc_lookup[i].pipe.clnt, p->name)) {
1555 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1556 rpc_lookup[i].pipe.clnt, rpc_lookup[i].pipe.srv));
1557 fstrcpy(p->pipe_srv_name, rpc_lookup[i].pipe.srv);
1562 if (i == rpc_lookup_size) {
1563 if (NT_STATUS_IS_ERR(smb_probe_module("rpc", p->name))) {
1564 DEBUG(3,("api_pipe_bind_req: Unknown pipe name %s in bind request.\n",
1566 prs_mem_free(&outgoing_rpc);
1567 prs_mem_free(&out_hdr_ba);
1568 prs_mem_free(&out_auth);
1570 return setup_bind_nak(p);
1573 for (i = 0; i < rpc_lookup_size; i++) {
1574 if (strequal(rpc_lookup[i].pipe.clnt, p->name)) {
1575 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1576 rpc_lookup[i].pipe.clnt, rpc_lookup[i].pipe.srv));
1577 fstrcpy(p->pipe_srv_name, rpc_lookup[i].pipe.srv);
1582 if (i == rpc_lookup_size) {
1583 DEBUG(0, ("module %s doesn't provide functions for pipe %s!\n", p->name, p->name));
1588 ZERO_STRUCT(hdr_rb);
1590 /* decode the bind request */
1591 if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_in_p, 0)) {
1592 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_RB struct.\n"));
1596 /* name has to be \PIPE\xxxxx */
1597 fstrcpy(ack_pipe_name, "\\PIPE\\");
1598 fstrcat(ack_pipe_name, p->pipe_srv_name);
1600 DEBUG(5,("api_pipe_bind_req: make response. %d\n", __LINE__));
1603 * Check if this is an authenticated bind request.
1606 if (p->hdr.auth_len) {
1608 * Decode the authentication verifier.
1611 if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
1612 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1616 auth_type = auth_info.auth_type;
1618 /* Work out if we have to sign or seal etc. */
1619 switch (auth_info.auth_level) {
1620 case RPC_AUTH_LEVEL_INTEGRITY:
1621 p->auth.auth_level = PIPE_AUTH_LEVEL_INTEGRITY;
1623 case RPC_AUTH_LEVEL_PRIVACY:
1624 p->auth.auth_level = PIPE_AUTH_LEVEL_PRIVACY;
1627 DEBUG(0,("api_pipe_bind_req: unexpected auth level (%u).\n",
1628 (unsigned int)auth_info.auth_level ));
1632 ZERO_STRUCT(auth_info);
1635 assoc_gid = hdr_rb.bba.assoc_gid ? hdr_rb.bba.assoc_gid : 0x53f0;
1638 case RPC_NTLMSSP_AUTH_TYPE:
1639 if (!pipe_ntlmssp_auth_bind(p, rpc_in_p, &auth_info, &out_auth)) {
1645 case RPC_SCHANNEL_AUTH_TYPE:
1646 if (!pipe_schannel_auth_bind(p, rpc_in_p, &auth_info, &out_auth)) {
1651 case RPC_SPNEGO_AUTH_TYPE:
1652 if (!pipe_spnego_auth_bind_negotiate(p, rpc_in_p, &auth_info, &out_auth)) {
1657 case RPC_ANONYMOUS_AUTH_TYPE:
1658 /* Unauthenticated bind request. */
1659 /* Get the authenticated pipe user from current_user */
1660 if (!copy_current_user(&p->pipe_user, ¤t_user)) {
1661 DEBUG(10, ("Could not copy current user\n"));
1664 /* We're finished - no more packets. */
1665 p->auth.auth_type = PIPE_AUTH_TYPE_NONE;
1666 /* We must set the pipe auth_level here also. */
1667 p->auth.auth_level = PIPE_AUTH_LEVEL_NONE;
1668 p->pipe_bound = True;
1669 /* The session key was initialized from the SMB
1670 * session in make_internal_rpc_pipe_p */
1674 DEBUG(0,("api_pipe_bind_req: unknown auth type %x requested.\n", auth_type ));
1679 * Create the bind response struct.
1682 /* If the requested abstract synt uuid doesn't match our client pipe,
1683 reject the bind_ack & set the transfer interface synt to all 0's,
1684 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1686 Needed when adding entries to a DACL from NT5 - SK */
1688 if(check_bind_req(p, &hdr_rb.rpc_context[0].abstract, &hdr_rb.rpc_context[0].transfer[0],
1689 hdr_rb.rpc_context[0].context_id )) {
1690 init_rpc_hdr_ba(&hdr_ba,
1691 RPC_MAX_PDU_FRAG_LEN,
1692 RPC_MAX_PDU_FRAG_LEN,
1696 &hdr_rb.rpc_context[0].transfer[0]);
1698 RPC_IFACE null_interface;
1699 ZERO_STRUCT(null_interface);
1700 /* Rejection reason: abstract syntax not supported */
1701 init_rpc_hdr_ba(&hdr_ba, RPC_MAX_PDU_FRAG_LEN,
1702 RPC_MAX_PDU_FRAG_LEN, assoc_gid,
1703 ack_pipe_name, 0x1, 0x2, 0x1,
1705 p->pipe_bound = False;
1712 if(!smb_io_rpc_hdr_ba("", &hdr_ba, &out_hdr_ba, 0)) {
1713 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR_BA failed.\n"));
1718 * Create the header, now we know the length.
1721 if (prs_offset(&out_auth)) {
1722 auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
1725 init_rpc_hdr(&p->hdr, RPC_BINDACK, RPC_FLG_FIRST | RPC_FLG_LAST,
1727 RPC_HEADER_LEN + prs_offset(&out_hdr_ba) + prs_offset(&out_auth),
1731 * Marshall the header into the outgoing PDU.
1734 if(!smb_io_rpc_hdr("", &p->hdr, &outgoing_rpc, 0)) {
1735 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR failed.\n"));
1740 * Now add the RPC_HDR_BA and any auth needed.
1743 if(!prs_append_prs_data( &outgoing_rpc, &out_hdr_ba)) {
1744 DEBUG(0,("api_pipe_bind_req: append of RPC_HDR_BA failed.\n"));
1748 if (auth_len && !prs_append_prs_data( &outgoing_rpc, &out_auth)) {
1749 DEBUG(0,("api_pipe_bind_req: append of auth info failed.\n"));
1754 * Setup the lengths for the initial reply.
1757 p->out_data.data_sent_length = 0;
1758 p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
1759 p->out_data.current_pdu_sent = 0;
1761 prs_mem_free(&out_hdr_ba);
1762 prs_mem_free(&out_auth);
1768 prs_mem_free(&outgoing_rpc);
1769 prs_mem_free(&out_hdr_ba);
1770 prs_mem_free(&out_auth);
1771 return setup_bind_nak(p);
1774 /****************************************************************************
1775 Deal with an alter context call. Can be third part of 3 leg auth request for
1777 ****************************************************************************/
1779 bool api_pipe_alter_context(pipes_struct *p, prs_struct *rpc_in_p)
1783 RPC_HDR_AUTH auth_info;
1785 fstring ack_pipe_name;
1786 prs_struct out_hdr_ba;
1787 prs_struct out_auth;
1788 prs_struct outgoing_rpc;
1791 prs_init_empty( &outgoing_rpc, p->mem_ctx, MARSHALL);
1794 * Marshall directly into the outgoing PDU space. We
1795 * must do this as we need to set to the bind response
1796 * header and are never sending more than one PDU here.
1799 prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
1802 * Setup the memory to marshall the ba header, and the
1806 if(!prs_init(&out_hdr_ba, 1024, p->mem_ctx, MARSHALL)) {
1807 DEBUG(0,("api_pipe_alter_context: malloc out_hdr_ba failed.\n"));
1808 prs_mem_free(&outgoing_rpc);
1812 if(!prs_init(&out_auth, 1024, p->mem_ctx, MARSHALL)) {
1813 DEBUG(0,("api_pipe_alter_context: malloc out_auth failed.\n"));
1814 prs_mem_free(&outgoing_rpc);
1815 prs_mem_free(&out_hdr_ba);
1819 DEBUG(5,("api_pipe_alter_context: decode request. %d\n", __LINE__));
1821 /* decode the alter context request */
1822 if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_in_p, 0)) {
1823 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_RB struct.\n"));
1827 /* secondary address CAN be NULL
1828 * as the specs say it's ignored.
1829 * It MUST be NULL to have the spoolss working.
1831 fstrcpy(ack_pipe_name,"");
1833 DEBUG(5,("api_pipe_alter_context: make response. %d\n", __LINE__));
1836 * Check if this is an authenticated alter context request.
1839 if (p->hdr.auth_len != 0) {
1841 * Decode the authentication verifier.
1844 if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
1845 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1850 * Currently only the SPNEGO auth type uses the alter ctx
1851 * response in place of the NTLMSSP auth3 type.
1854 if (auth_info.auth_type == RPC_SPNEGO_AUTH_TYPE) {
1855 /* We can only finish if the pipe is unbound. */
1856 if (!p->pipe_bound) {
1857 if (!pipe_spnego_auth_bind_continue(p, rpc_in_p, &auth_info, &out_auth)) {
1865 ZERO_STRUCT(auth_info);
1868 assoc_gid = hdr_rb.bba.assoc_gid ? hdr_rb.bba.assoc_gid : 0x53f0;
1871 * Create the bind response struct.
1874 /* If the requested abstract synt uuid doesn't match our client pipe,
1875 reject the bind_ack & set the transfer interface synt to all 0's,
1876 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1878 Needed when adding entries to a DACL from NT5 - SK */
1880 if(check_bind_req(p, &hdr_rb.rpc_context[0].abstract, &hdr_rb.rpc_context[0].transfer[0],
1881 hdr_rb.rpc_context[0].context_id )) {
1882 init_rpc_hdr_ba(&hdr_ba,
1883 RPC_MAX_PDU_FRAG_LEN,
1884 RPC_MAX_PDU_FRAG_LEN,
1888 &hdr_rb.rpc_context[0].transfer[0]);
1890 RPC_IFACE null_interface;
1891 ZERO_STRUCT(null_interface);
1892 /* Rejection reason: abstract syntax not supported */
1893 init_rpc_hdr_ba(&hdr_ba, RPC_MAX_PDU_FRAG_LEN,
1894 RPC_MAX_PDU_FRAG_LEN, assoc_gid,
1895 ack_pipe_name, 0x1, 0x2, 0x1,
1897 p->pipe_bound = False;
1904 if(!smb_io_rpc_hdr_ba("", &hdr_ba, &out_hdr_ba, 0)) {
1905 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR_BA failed.\n"));
1910 * Create the header, now we know the length.
1913 if (prs_offset(&out_auth)) {
1914 auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
1917 init_rpc_hdr(&p->hdr, RPC_ALTCONTRESP, RPC_FLG_FIRST | RPC_FLG_LAST,
1919 RPC_HEADER_LEN + prs_offset(&out_hdr_ba) + prs_offset(&out_auth),
1923 * Marshall the header into the outgoing PDU.
1926 if(!smb_io_rpc_hdr("", &p->hdr, &outgoing_rpc, 0)) {
1927 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR failed.\n"));
1932 * Now add the RPC_HDR_BA and any auth needed.
1935 if(!prs_append_prs_data( &outgoing_rpc, &out_hdr_ba)) {
1936 DEBUG(0,("api_pipe_alter_context: append of RPC_HDR_BA failed.\n"));
1940 if (auth_len && !prs_append_prs_data( &outgoing_rpc, &out_auth)) {
1941 DEBUG(0,("api_pipe_alter_context: append of auth info failed.\n"));
1946 * Setup the lengths for the initial reply.
1949 p->out_data.data_sent_length = 0;
1950 p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
1951 p->out_data.current_pdu_sent = 0;
1953 prs_mem_free(&out_hdr_ba);
1954 prs_mem_free(&out_auth);
1960 prs_mem_free(&outgoing_rpc);
1961 prs_mem_free(&out_hdr_ba);
1962 prs_mem_free(&out_auth);
1963 return setup_bind_nak(p);
1966 /****************************************************************************
1967 Deal with NTLMSSP sign & seal processing on an RPC request.
1968 ****************************************************************************/
1970 bool api_pipe_ntlmssp_auth_process(pipes_struct *p, prs_struct *rpc_in,
1971 uint32 *p_ss_padding_len, NTSTATUS *pstatus)
1973 RPC_HDR_AUTH auth_info;
1974 uint32 auth_len = p->hdr.auth_len;
1975 uint32 save_offset = prs_offset(rpc_in);
1976 AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
1977 unsigned char *data = NULL;
1979 unsigned char *full_packet_data = NULL;
1980 size_t full_packet_data_len;
1981 DATA_BLOB auth_blob;
1983 *pstatus = NT_STATUS_OK;
1985 if (p->auth.auth_level == PIPE_AUTH_LEVEL_NONE || p->auth.auth_level == PIPE_AUTH_LEVEL_CONNECT) {
1990 *pstatus = NT_STATUS_INVALID_PARAMETER;
1994 /* Ensure there's enough data for an authenticated request. */
1995 if ((auth_len > RPC_MAX_SIGN_SIZE) ||
1996 (RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_HDR_AUTH_LEN + auth_len > p->hdr.frag_len)) {
1997 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len %u is too large.\n",
1998 (unsigned int)auth_len ));
1999 *pstatus = NT_STATUS_INVALID_PARAMETER;
2004 * We need the full packet data + length (minus auth stuff) as well as the packet data + length
2005 * after the RPC header.
2006 * We need to pass in the full packet (minus auth len) to the NTLMSSP sign and check seal
2007 * functions as NTLMv2 checks the rpc headers also.
2010 data = (unsigned char *)(prs_data_p(rpc_in) + RPC_HDR_REQ_LEN);
2011 data_len = (size_t)(p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN - RPC_HDR_AUTH_LEN - auth_len);
2013 full_packet_data = p->in_data.current_in_pdu;
2014 full_packet_data_len = p->hdr.frag_len - auth_len;
2016 /* Pull the auth header and the following data into a blob. */
2017 if(!prs_set_offset(rpc_in, RPC_HDR_REQ_LEN + data_len)) {
2018 DEBUG(0,("api_pipe_ntlmssp_auth_process: cannot move offset to %u.\n",
2019 (unsigned int)RPC_HDR_REQ_LEN + (unsigned int)data_len ));
2020 *pstatus = NT_STATUS_INVALID_PARAMETER;
2024 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
2025 DEBUG(0,("api_pipe_ntlmssp_auth_process: failed to unmarshall RPC_HDR_AUTH.\n"));
2026 *pstatus = NT_STATUS_INVALID_PARAMETER;
2030 auth_blob.data = (unsigned char *)prs_data_p(rpc_in) + prs_offset(rpc_in);
2031 auth_blob.length = auth_len;
2033 switch (p->auth.auth_level) {
2034 case PIPE_AUTH_LEVEL_PRIVACY:
2035 /* Data is encrypted. */
2036 *pstatus = ntlmssp_unseal_packet(a->ntlmssp_state,
2039 full_packet_data_len,
2041 if (!NT_STATUS_IS_OK(*pstatus)) {
2045 case PIPE_AUTH_LEVEL_INTEGRITY:
2046 /* Data is signed. */
2047 *pstatus = ntlmssp_check_packet(a->ntlmssp_state,
2050 full_packet_data_len,
2052 if (!NT_STATUS_IS_OK(*pstatus)) {
2057 *pstatus = NT_STATUS_INVALID_PARAMETER;
2062 * Return the current pointer to the data offset.
2065 if(!prs_set_offset(rpc_in, save_offset)) {
2066 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
2067 (unsigned int)save_offset ));
2068 *pstatus = NT_STATUS_INVALID_PARAMETER;
2073 * Remember the padding length. We must remove it from the real data
2074 * stream once the sign/seal is done.
2077 *p_ss_padding_len = auth_info.auth_pad_len;
2082 /****************************************************************************
2083 Deal with schannel processing on an RPC request.
2084 ****************************************************************************/
2086 bool api_pipe_schannel_process(pipes_struct *p, prs_struct *rpc_in, uint32 *p_ss_padding_len)
2090 uint32 save_offset = prs_offset(rpc_in);
2091 RPC_HDR_AUTH auth_info;
2092 RPC_AUTH_SCHANNEL_CHK schannel_chk;
2094 auth_len = p->hdr.auth_len;
2096 if (auth_len != RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN) {
2097 DEBUG(0,("Incorrect auth_len %u.\n", (unsigned int)auth_len ));
2102 * The following is that length of the data we must verify or unseal.
2103 * This doesn't include the RPC headers or the auth_len or the RPC_HDR_AUTH_LEN
2104 * preceeding the auth_data.
2107 if (p->hdr.frag_len < RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_HDR_AUTH_LEN + auth_len) {
2108 DEBUG(0,("Incorrect frag %u, auth %u.\n",
2109 (unsigned int)p->hdr.frag_len,
2110 (unsigned int)auth_len ));
2114 data_len = p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN -
2115 RPC_HDR_AUTH_LEN - auth_len;
2117 DEBUG(5,("data %d auth %d\n", data_len, auth_len));
2119 if(!prs_set_offset(rpc_in, RPC_HDR_REQ_LEN + data_len)) {
2120 DEBUG(0,("cannot move offset to %u.\n",
2121 (unsigned int)RPC_HDR_REQ_LEN + data_len ));
2125 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
2126 DEBUG(0,("failed to unmarshall RPC_HDR_AUTH.\n"));
2130 if (auth_info.auth_type != RPC_SCHANNEL_AUTH_TYPE) {
2131 DEBUG(0,("Invalid auth info %d on schannel\n",
2132 auth_info.auth_type));
2136 if(!smb_io_rpc_auth_schannel_chk("", RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN, &schannel_chk, rpc_in, 0)) {
2137 DEBUG(0,("failed to unmarshal RPC_AUTH_SCHANNEL_CHK.\n"));
2141 if (!schannel_decode(p->auth.a_u.schannel_auth,
2143 SENDER_IS_INITIATOR,
2145 prs_data_p(rpc_in)+RPC_HDR_REQ_LEN, data_len)) {
2146 DEBUG(3,("failed to decode PDU\n"));
2151 * Return the current pointer to the data offset.
2154 if(!prs_set_offset(rpc_in, save_offset)) {
2155 DEBUG(0,("failed to set offset back to %u\n",
2156 (unsigned int)save_offset ));
2160 /* The sequence number gets incremented on both send and receive. */
2161 p->auth.a_u.schannel_auth->seq_num++;
2164 * Remember the padding length. We must remove it from the real data
2165 * stream once the sign/seal is done.
2168 *p_ss_padding_len = auth_info.auth_pad_len;
2173 /****************************************************************************
2174 Return a user struct for a pipe user.
2175 ****************************************************************************/
2177 struct current_user *get_current_user(struct current_user *user, pipes_struct *p)
2179 if (p->pipe_bound &&
2180 (p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP ||
2181 (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP))) {
2182 memcpy(user, &p->pipe_user, sizeof(struct current_user));
2184 memcpy(user, ¤t_user, sizeof(struct current_user));
2190 /****************************************************************************
2191 Find the set of RPC functions associated with this context_id
2192 ****************************************************************************/
2194 static PIPE_RPC_FNS* find_pipe_fns_by_context( PIPE_RPC_FNS *list, uint32 context_id )
2196 PIPE_RPC_FNS *fns = NULL;
2197 PIPE_RPC_FNS *tmp = NULL;
2200 DEBUG(0,("find_pipe_fns_by_context: ERROR! No context list for pipe!\n"));
2204 for (tmp=list; tmp; tmp=tmp->next ) {
2205 if ( tmp->context_id == context_id )
2214 /****************************************************************************
2216 ****************************************************************************/
2218 void free_pipe_rpc_context( PIPE_RPC_FNS *list )
2220 PIPE_RPC_FNS *tmp = list;
2232 /****************************************************************************
2233 Find the correct RPC function to call for this request.
2234 If the pipe is authenticated then become the correct UNIX user
2235 before doing the call.
2236 ****************************************************************************/
2238 bool api_pipe_request(pipes_struct *p)
2241 bool changed_user = False;
2242 PIPE_RPC_FNS *pipe_fns;
2244 if (p->pipe_bound &&
2245 ((p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP) ||
2246 (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP))) {
2247 if(!become_authenticated_pipe_user(p)) {
2248 prs_mem_free(&p->out_data.rdata);
2251 changed_user = True;
2254 DEBUG(5, ("Requested \\PIPE\\%s\n", p->name));
2256 /* get the set of RPC functions for this context */
2258 pipe_fns = find_pipe_fns_by_context(p->contexts, p->hdr_req.context_id);
2261 TALLOC_CTX *frame = talloc_stackframe();
2262 ret = api_rpcTNP(p, p->name, pipe_fns->cmds, pipe_fns->n_cmds);
2266 DEBUG(0,("api_pipe_request: No rpc function table associated with context [%d] on pipe [%s]\n",
2267 p->hdr_req.context_id, p->name));
2271 unbecome_authenticated_pipe_user();
2277 /*******************************************************************
2278 Calls the underlying RPC function for a named pipe.
2279 ********************************************************************/
2281 bool api_rpcTNP(pipes_struct *p, const char *rpc_name,
2282 const struct api_struct *api_rpc_cmds, int n_cmds)
2286 uint32 offset1, offset2;
2288 /* interpret the command */
2289 DEBUG(4,("api_rpcTNP: %s op 0x%x - ", rpc_name, p->hdr_req.opnum));
2291 slprintf(name, sizeof(name)-1, "in_%s", rpc_name);
2292 prs_dump(name, p->hdr_req.opnum, &p->in_data.data);
2294 for (fn_num = 0; fn_num < n_cmds; fn_num++) {
2295 if (api_rpc_cmds[fn_num].opnum == p->hdr_req.opnum && api_rpc_cmds[fn_num].fn != NULL) {
2296 DEBUG(3,("api_rpcTNP: rpc command: %s\n", api_rpc_cmds[fn_num].name));
2301 if (fn_num == n_cmds) {
2303 * For an unknown RPC just return a fault PDU but
2304 * return True to allow RPC's on the pipe to continue
2305 * and not put the pipe into fault state. JRA.
2307 DEBUG(4, ("unknown\n"));
2308 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
2312 offset1 = prs_offset(&p->out_data.rdata);
2314 DEBUG(6, ("api_rpc_cmds[%d].fn == %p\n",
2315 fn_num, api_rpc_cmds[fn_num].fn));
2316 /* do the actual command */
2317 if(!api_rpc_cmds[fn_num].fn(p)) {
2318 DEBUG(0,("api_rpcTNP: %s: %s failed.\n", rpc_name, api_rpc_cmds[fn_num].name));
2319 prs_mem_free(&p->out_data.rdata);
2323 if (p->bad_handle_fault_state) {
2324 DEBUG(4,("api_rpcTNP: bad handle fault return.\n"));
2325 p->bad_handle_fault_state = False;
2326 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_CONTEXT_MISMATCH));
2330 if (p->rng_fault_state) {
2331 DEBUG(4, ("api_rpcTNP: rng fault return\n"));
2332 p->rng_fault_state = False;
2333 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
2337 slprintf(name, sizeof(name)-1, "out_%s", rpc_name);
2338 offset2 = prs_offset(&p->out_data.rdata);
2339 prs_set_offset(&p->out_data.rdata, offset1);
2340 prs_dump(name, p->hdr_req.opnum, &p->out_data.rdata);
2341 prs_set_offset(&p->out_data.rdata, offset2);
2343 DEBUG(5,("api_rpcTNP: called %s successfully\n", rpc_name));
2345 /* Check for buffer underflow in rpc parsing */
2347 if ((DEBUGLEVEL >= 10) &&
2348 (prs_offset(&p->in_data.data) != prs_data_size(&p->in_data.data))) {
2349 size_t data_len = prs_data_size(&p->in_data.data) - prs_offset(&p->in_data.data);
2350 char *data = (char *)SMB_MALLOC(data_len);
2352 DEBUG(10, ("api_rpcTNP: rpc input buffer underflow (parse error?)\n"));
2354 prs_uint8s(False, "", &p->in_data.data, 0, (unsigned char *)data, (uint32)data_len);
2363 /*******************************************************************
2364 *******************************************************************/
2366 void get_pipe_fns( int idx, struct api_struct **fns, int *n_fns )
2368 struct api_struct *cmds = NULL;
2373 lsarpc_get_pipe_fns( &cmds, &n_cmds );
2376 dssetup_get_pipe_fns( &cmds, &n_cmds );
2379 samr_get_pipe_fns( &cmds, &n_cmds );
2382 netlogon_get_pipe_fns( &cmds, &n_cmds );
2385 srvsvc_get_pipe_fns( &cmds, &n_cmds );
2388 wkssvc_get_pipe_fns( &cmds, &n_cmds );
2391 winreg_get_pipe_fns( &cmds, &n_cmds );
2394 spoolss_get_pipe_fns( &cmds, &n_cmds );
2397 netdfs_get_pipe_fns( &cmds, &n_cmds );
2400 svcctl2_get_pipe_fns( &cmds, &n_cmds );
2403 eventlog2_get_pipe_fns( &cmds, &n_cmds );
2406 ntsvcs2_get_pipe_fns( &cmds, &n_cmds );
2410 rpcecho_get_pipe_fns( &cmds, &n_cmds );
2414 DEBUG(0,("get_pipe_fns: Unknown pipe index! [%d]\n", idx));