2 * Unix SMB/CIFS implementation.
3 * RPC Pipe client / server routines
4 * Almost completely rewritten by (C) Jeremy Allison 2005.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
20 /* this module apparently provides an implementation of DCE/RPC over a
21 * named pipe (IPC$ connection using SMBtrans). details of DCE/RPC
22 * documentation are available (in on-line form) from the X-Open group.
24 * this module should provide a level of abstraction between SMB
25 * and DCE/RPC, while minimising the amount of mallocs, unnecessary
26 * data copies, and network traffic.
32 extern struct current_user current_user;
35 #define DBGC_CLASS DBGC_RPC_SRV
37 static void free_pipe_ntlmssp_auth_data(struct pipe_auth_data *auth)
39 AUTH_NTLMSSP_STATE *a = auth->a_u.auth_ntlmssp_state;
44 auth->a_u.auth_ntlmssp_state = NULL;
47 static DATA_BLOB generic_session_key(void)
49 return data_blob("SystemLibraryDTC", 16);
52 /*******************************************************************
53 Generate the next PDU to be returned from the data in p->rdata.
55 ********************************************************************/
57 static bool create_next_pdu_ntlmssp(pipes_struct *p)
59 RPC_HDR_RESP hdr_resp;
60 uint32 ss_padding_len = 0;
61 uint32 data_space_available;
64 prs_struct outgoing_pdu;
67 RPC_HDR_AUTH auth_info;
68 uint8 auth_type, auth_level;
69 AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
72 * If we're in the fault state, keep returning fault PDU's until
73 * the pipe gets closed. JRA.
77 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
81 memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
83 /* Change the incoming request header to a response. */
84 p->hdr.pkt_type = RPC_RESPONSE;
86 /* Set up rpc header flags. */
87 if (p->out_data.data_sent_length == 0) {
88 p->hdr.flags = RPC_FLG_FIRST;
94 * Work out how much we can fit in a single PDU.
97 data_len_left = prs_offset(&p->out_data.rdata) - p->out_data.data_sent_length;
100 * Ensure there really is data left to send.
104 DEBUG(0,("create_next_pdu_ntlmssp: no data left to send !\n"));
108 data_space_available = sizeof(p->out_data.current_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN -
109 RPC_HDR_AUTH_LEN - NTLMSSP_SIG_SIZE;
112 * The amount we send is the minimum of the available
113 * space and the amount left to send.
116 data_len = MIN(data_len_left, data_space_available);
119 * Set up the alloc hint. This should be the data left to
123 hdr_resp.alloc_hint = data_len_left;
126 * Work out if this PDU will be the last.
129 if(p->out_data.data_sent_length + data_len >= prs_offset(&p->out_data.rdata)) {
130 p->hdr.flags |= RPC_FLG_LAST;
131 if (data_len_left % 8) {
132 ss_padding_len = 8 - (data_len_left % 8);
133 DEBUG(10,("create_next_pdu_ntlmssp: adding sign/seal padding of %u\n",
139 * Set up the header lengths.
142 p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN +
143 data_len + ss_padding_len +
144 RPC_HDR_AUTH_LEN + NTLMSSP_SIG_SIZE;
145 p->hdr.auth_len = NTLMSSP_SIG_SIZE;
149 * Init the parse struct to point at the outgoing
153 prs_init_empty( &outgoing_pdu, p->mem_ctx, MARSHALL);
154 prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
156 /* Store the header in the data stream. */
157 if(!smb_io_rpc_hdr("hdr", &p->hdr, &outgoing_pdu, 0)) {
158 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR.\n"));
159 prs_mem_free(&outgoing_pdu);
163 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &outgoing_pdu, 0)) {
164 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_RESP.\n"));
165 prs_mem_free(&outgoing_pdu);
169 /* Copy the data into the PDU. */
171 if(!prs_append_some_prs_data(&outgoing_pdu, &p->out_data.rdata, p->out_data.data_sent_length, data_len)) {
172 DEBUG(0,("create_next_pdu_ntlmssp: failed to copy %u bytes of data.\n", (unsigned int)data_len));
173 prs_mem_free(&outgoing_pdu);
177 /* Copy the sign/seal padding data. */
178 if (ss_padding_len) {
181 memset(pad, '\0', 8);
182 if (!prs_copy_data_in(&outgoing_pdu, pad, ss_padding_len)) {
183 DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes of pad data.\n",
184 (unsigned int)ss_padding_len));
185 prs_mem_free(&outgoing_pdu);
191 /* Now write out the auth header and null blob. */
192 if (p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP) {
193 auth_type = RPC_NTLMSSP_AUTH_TYPE;
195 auth_type = RPC_SPNEGO_AUTH_TYPE;
197 if (p->auth.auth_level == PIPE_AUTH_LEVEL_PRIVACY) {
198 auth_level = RPC_AUTH_LEVEL_PRIVACY;
200 auth_level = RPC_AUTH_LEVEL_INTEGRITY;
203 init_rpc_hdr_auth(&auth_info, auth_type, auth_level, ss_padding_len, 1 /* context id. */);
204 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, &outgoing_pdu, 0)) {
205 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_AUTH.\n"));
206 prs_mem_free(&outgoing_pdu);
210 /* Generate the sign blob. */
212 switch (p->auth.auth_level) {
213 case PIPE_AUTH_LEVEL_PRIVACY:
214 /* Data portion is encrypted. */
215 status = ntlmssp_seal_packet(a->ntlmssp_state,
216 (unsigned char *)prs_data_p(&outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
217 data_len + ss_padding_len,
218 (unsigned char *)prs_data_p(&outgoing_pdu),
219 (size_t)prs_offset(&outgoing_pdu),
221 if (!NT_STATUS_IS_OK(status)) {
222 data_blob_free(&auth_blob);
223 prs_mem_free(&outgoing_pdu);
227 case PIPE_AUTH_LEVEL_INTEGRITY:
228 /* Data is signed. */
229 status = ntlmssp_sign_packet(a->ntlmssp_state,
230 (unsigned char *)prs_data_p(&outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
231 data_len + ss_padding_len,
232 (unsigned char *)prs_data_p(&outgoing_pdu),
233 (size_t)prs_offset(&outgoing_pdu),
235 if (!NT_STATUS_IS_OK(status)) {
236 data_blob_free(&auth_blob);
237 prs_mem_free(&outgoing_pdu);
242 prs_mem_free(&outgoing_pdu);
246 /* Append the auth blob. */
247 if (!prs_copy_data_in(&outgoing_pdu, (char *)auth_blob.data, NTLMSSP_SIG_SIZE)) {
248 DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes auth blob.\n",
249 (unsigned int)NTLMSSP_SIG_SIZE));
250 data_blob_free(&auth_blob);
251 prs_mem_free(&outgoing_pdu);
255 data_blob_free(&auth_blob);
258 * Setup the counts for this PDU.
261 p->out_data.data_sent_length += data_len;
262 p->out_data.current_pdu_len = p->hdr.frag_len;
263 p->out_data.current_pdu_sent = 0;
265 prs_mem_free(&outgoing_pdu);
269 /*******************************************************************
270 Generate the next PDU to be returned from the data in p->rdata.
271 Return an schannel authenticated fragment.
272 ********************************************************************/
274 static bool create_next_pdu_schannel(pipes_struct *p)
276 RPC_HDR_RESP hdr_resp;
277 uint32 ss_padding_len = 0;
279 uint32 data_space_available;
280 uint32 data_len_left;
281 prs_struct outgoing_pdu;
285 * If we're in the fault state, keep returning fault PDU's until
286 * the pipe gets closed. JRA.
290 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
294 memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
296 /* Change the incoming request header to a response. */
297 p->hdr.pkt_type = RPC_RESPONSE;
299 /* Set up rpc header flags. */
300 if (p->out_data.data_sent_length == 0) {
301 p->hdr.flags = RPC_FLG_FIRST;
307 * Work out how much we can fit in a single PDU.
310 data_len_left = prs_offset(&p->out_data.rdata) - p->out_data.data_sent_length;
313 * Ensure there really is data left to send.
317 DEBUG(0,("create_next_pdu_schannel: no data left to send !\n"));
321 data_space_available = sizeof(p->out_data.current_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN -
322 RPC_HDR_AUTH_LEN - RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
325 * The amount we send is the minimum of the available
326 * space and the amount left to send.
329 data_len = MIN(data_len_left, data_space_available);
332 * Set up the alloc hint. This should be the data left to
336 hdr_resp.alloc_hint = data_len_left;
339 * Work out if this PDU will be the last.
342 if(p->out_data.data_sent_length + data_len >= prs_offset(&p->out_data.rdata)) {
343 p->hdr.flags |= RPC_FLG_LAST;
344 if (data_len_left % 8) {
345 ss_padding_len = 8 - (data_len_left % 8);
346 DEBUG(10,("create_next_pdu_schannel: adding sign/seal padding of %u\n",
351 p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len + ss_padding_len +
352 RPC_HDR_AUTH_LEN + RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
353 p->hdr.auth_len = RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
356 * Init the parse struct to point at the outgoing
360 prs_init_empty( &outgoing_pdu, p->mem_ctx, MARSHALL);
361 prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
363 /* Store the header in the data stream. */
364 if(!smb_io_rpc_hdr("hdr", &p->hdr, &outgoing_pdu, 0)) {
365 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR.\n"));
366 prs_mem_free(&outgoing_pdu);
370 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &outgoing_pdu, 0)) {
371 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_RESP.\n"));
372 prs_mem_free(&outgoing_pdu);
376 /* Store the current offset. */
377 data_pos = prs_offset(&outgoing_pdu);
379 /* Copy the data into the PDU. */
381 if(!prs_append_some_prs_data(&outgoing_pdu, &p->out_data.rdata, p->out_data.data_sent_length, data_len)) {
382 DEBUG(0,("create_next_pdu_schannel: failed to copy %u bytes of data.\n", (unsigned int)data_len));
383 prs_mem_free(&outgoing_pdu);
387 /* Copy the sign/seal padding data. */
388 if (ss_padding_len) {
390 memset(pad, '\0', 8);
391 if (!prs_copy_data_in(&outgoing_pdu, pad, ss_padding_len)) {
392 DEBUG(0,("create_next_pdu_schannel: failed to add %u bytes of pad data.\n", (unsigned int)ss_padding_len));
393 prs_mem_free(&outgoing_pdu);
400 * Schannel processing.
403 RPC_HDR_AUTH auth_info;
404 RPC_AUTH_SCHANNEL_CHK verf;
406 data = prs_data_p(&outgoing_pdu) + data_pos;
407 /* Check it's the type of reply we were expecting to decode */
409 init_rpc_hdr_auth(&auth_info,
410 RPC_SCHANNEL_AUTH_TYPE,
411 p->auth.auth_level == PIPE_AUTH_LEVEL_PRIVACY ?
412 RPC_AUTH_LEVEL_PRIVACY : RPC_AUTH_LEVEL_INTEGRITY,
415 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, &outgoing_pdu, 0)) {
416 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_AUTH.\n"));
417 prs_mem_free(&outgoing_pdu);
421 schannel_encode(p->auth.a_u.schannel_auth,
424 &verf, data, data_len + ss_padding_len);
426 if (!smb_io_rpc_auth_schannel_chk("", RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN,
427 &verf, &outgoing_pdu, 0)) {
428 prs_mem_free(&outgoing_pdu);
432 p->auth.a_u.schannel_auth->seq_num++;
436 * Setup the counts for this PDU.
439 p->out_data.data_sent_length += data_len;
440 p->out_data.current_pdu_len = p->hdr.frag_len;
441 p->out_data.current_pdu_sent = 0;
443 prs_mem_free(&outgoing_pdu);
447 /*******************************************************************
448 Generate the next PDU to be returned from the data in p->rdata.
449 No authentication done.
450 ********************************************************************/
452 static bool create_next_pdu_noauth(pipes_struct *p)
454 RPC_HDR_RESP hdr_resp;
456 uint32 data_space_available;
457 uint32 data_len_left;
458 prs_struct outgoing_pdu;
461 * If we're in the fault state, keep returning fault PDU's until
462 * the pipe gets closed. JRA.
466 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
470 memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
472 /* Change the incoming request header to a response. */
473 p->hdr.pkt_type = RPC_RESPONSE;
475 /* Set up rpc header flags. */
476 if (p->out_data.data_sent_length == 0) {
477 p->hdr.flags = RPC_FLG_FIRST;
483 * Work out how much we can fit in a single PDU.
486 data_len_left = prs_offset(&p->out_data.rdata) - p->out_data.data_sent_length;
489 * Ensure there really is data left to send.
493 DEBUG(0,("create_next_pdu_noath: no data left to send !\n"));
497 data_space_available = sizeof(p->out_data.current_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN;
500 * The amount we send is the minimum of the available
501 * space and the amount left to send.
504 data_len = MIN(data_len_left, data_space_available);
507 * Set up the alloc hint. This should be the data left to
511 hdr_resp.alloc_hint = data_len_left;
514 * Work out if this PDU will be the last.
517 if(p->out_data.data_sent_length + data_len >= prs_offset(&p->out_data.rdata)) {
518 p->hdr.flags |= RPC_FLG_LAST;
522 * Set up the header lengths.
525 p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len;
529 * Init the parse struct to point at the outgoing
533 prs_init_empty( &outgoing_pdu, p->mem_ctx, MARSHALL);
534 prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
536 /* Store the header in the data stream. */
537 if(!smb_io_rpc_hdr("hdr", &p->hdr, &outgoing_pdu, 0)) {
538 DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR.\n"));
539 prs_mem_free(&outgoing_pdu);
543 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &outgoing_pdu, 0)) {
544 DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR_RESP.\n"));
545 prs_mem_free(&outgoing_pdu);
549 /* Copy the data into the PDU. */
551 if(!prs_append_some_prs_data(&outgoing_pdu, &p->out_data.rdata, p->out_data.data_sent_length, data_len)) {
552 DEBUG(0,("create_next_pdu_noauth: failed to copy %u bytes of data.\n", (unsigned int)data_len));
553 prs_mem_free(&outgoing_pdu);
558 * Setup the counts for this PDU.
561 p->out_data.data_sent_length += data_len;
562 p->out_data.current_pdu_len = p->hdr.frag_len;
563 p->out_data.current_pdu_sent = 0;
565 prs_mem_free(&outgoing_pdu);
569 /*******************************************************************
570 Generate the next PDU to be returned from the data in p->rdata.
571 ********************************************************************/
573 bool create_next_pdu(pipes_struct *p)
575 switch(p->auth.auth_level) {
576 case PIPE_AUTH_LEVEL_NONE:
577 case PIPE_AUTH_LEVEL_CONNECT:
578 /* This is incorrect for auth level connect. Fixme. JRA */
579 return create_next_pdu_noauth(p);
582 switch(p->auth.auth_type) {
583 case PIPE_AUTH_TYPE_NTLMSSP:
584 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
585 return create_next_pdu_ntlmssp(p);
586 case PIPE_AUTH_TYPE_SCHANNEL:
587 return create_next_pdu_schannel(p);
593 DEBUG(0,("create_next_pdu: invalid internal auth level %u / type %u",
594 (unsigned int)p->auth.auth_level,
595 (unsigned int)p->auth.auth_type));
599 /*******************************************************************
600 Process an NTLMSSP authentication response.
601 If this function succeeds, the user has been authenticated
602 and their domain, name and calling workstation stored in
604 *******************************************************************/
606 static bool pipe_ntlmssp_verify_final(pipes_struct *p, DATA_BLOB *p_resp_blob)
608 DATA_BLOB session_key, reply;
610 AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
613 DEBUG(5,("pipe_ntlmssp_verify_final: pipe %s checking user details\n", 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;
666 p->pipe_user.ut.ngroups = a->server_info->utok.ngroups;
667 if (p->pipe_user.ut.ngroups) {
668 if (!(p->pipe_user.ut.groups = (gid_t *)memdup(
669 a->server_info->utok.groups,
670 sizeof(gid_t) * p->pipe_user.ut.ngroups))) {
671 DEBUG(0,("failed to memdup group list to p->pipe_user.groups\n"));
676 if (a->server_info->ptok) {
677 p->pipe_user.nt_user_token =
678 dup_nt_token(NULL, a->server_info->ptok);
680 DEBUG(1,("Error: Authmodule failed to provide nt_user_token\n"));
681 p->pipe_user.nt_user_token = NULL;
685 TALLOC_FREE(p->server_info);
687 p->server_info = copy_serverinfo(p, a->server_info);
688 if (p->server_info == NULL) {
689 DEBUG(0, ("copy_serverinfo failed\n"));
694 * We're an authenticated bind over smb, so the session key needs to
695 * be set to "SystemLibraryDTC". Weird, but this is what Windows
696 * does. See the RPC-SAMBA3SESSIONKEY.
699 session_key = generic_session_key();
700 if (session_key.data == NULL) {
704 ret = server_info_set_session_key(p->server_info, session_key);
706 data_blob_free(&session_key);
711 /*******************************************************************
712 The switch table for the pipe names and the functions to handle them.
713 *******************************************************************/
720 struct ndr_syntax_id rpc_interface;
721 const struct api_struct *cmds;
725 static struct rpc_table *rpc_lookup;
726 static int rpc_lookup_size;
728 /*******************************************************************
729 This is the "stage3" NTLMSSP response after a bind request and reply.
730 *******************************************************************/
732 bool api_pipe_bind_auth3(pipes_struct *p, prs_struct *rpc_in_p)
734 RPC_HDR_AUTH auth_info;
740 DEBUG(5,("api_pipe_bind_auth3: decode request. %d\n", __LINE__));
742 if (p->hdr.auth_len == 0) {
743 DEBUG(0,("api_pipe_bind_auth3: No auth field sent !\n"));
747 /* 4 bytes padding. */
748 if (!prs_uint32("pad", rpc_in_p, 0, &pad)) {
749 DEBUG(0,("api_pipe_bind_auth3: unmarshall of 4 byte pad failed.\n"));
754 * Decode the authentication verifier response.
757 if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
758 DEBUG(0,("api_pipe_bind_auth3: unmarshall of RPC_HDR_AUTH failed.\n"));
762 if (auth_info.auth_type != RPC_NTLMSSP_AUTH_TYPE) {
763 DEBUG(0,("api_pipe_bind_auth3: incorrect auth type (%u).\n",
764 (unsigned int)auth_info.auth_type ));
768 blob = data_blob(NULL,p->hdr.auth_len);
770 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
771 DEBUG(0,("api_pipe_bind_auth3: Failed to pull %u bytes - the response blob.\n",
772 (unsigned int)p->hdr.auth_len ));
777 * The following call actually checks the challenge/response data.
778 * for correctness against the given DOMAIN\user name.
781 if (!pipe_ntlmssp_verify_final(p, &blob)) {
785 data_blob_free(&blob);
787 p->pipe_bound = True;
793 data_blob_free(&blob);
794 free_pipe_ntlmssp_auth_data(&p->auth);
795 p->auth.a_u.auth_ntlmssp_state = NULL;
800 /*******************************************************************
801 Marshall a bind_nak pdu.
802 *******************************************************************/
804 static bool setup_bind_nak(pipes_struct *p)
806 prs_struct outgoing_rpc;
810 /* Free any memory in the current return data buffer. */
811 prs_mem_free(&p->out_data.rdata);
814 * Marshall directly into the outgoing PDU space. We
815 * must do this as we need to set to the bind response
816 * header and are never sending more than one PDU here.
819 prs_init_empty( &outgoing_rpc, p->mem_ctx, MARSHALL);
820 prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
823 * Initialize a bind_nak header.
826 init_rpc_hdr(&nak_hdr, RPC_BINDNACK, RPC_FLG_FIRST | RPC_FLG_LAST,
827 p->hdr.call_id, RPC_HEADER_LEN + sizeof(uint16), 0);
830 * Marshall the header into the outgoing PDU.
833 if(!smb_io_rpc_hdr("", &nak_hdr, &outgoing_rpc, 0)) {
834 DEBUG(0,("setup_bind_nak: marshalling of RPC_HDR failed.\n"));
835 prs_mem_free(&outgoing_rpc);
840 * Now add the reject reason.
843 if(!prs_uint16("reject code", &outgoing_rpc, 0, &zero)) {
844 prs_mem_free(&outgoing_rpc);
848 p->out_data.data_sent_length = 0;
849 p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
850 p->out_data.current_pdu_sent = 0;
852 if (p->auth.auth_data_free_func) {
853 (*p->auth.auth_data_free_func)(&p->auth);
855 p->auth.auth_level = PIPE_AUTH_LEVEL_NONE;
856 p->auth.auth_type = PIPE_AUTH_TYPE_NONE;
857 p->pipe_bound = False;
862 /*******************************************************************
863 Marshall a fault pdu.
864 *******************************************************************/
866 bool setup_fault_pdu(pipes_struct *p, NTSTATUS status)
868 prs_struct outgoing_pdu;
870 RPC_HDR_RESP hdr_resp;
871 RPC_HDR_FAULT fault_resp;
873 /* Free any memory in the current return data buffer. */
874 prs_mem_free(&p->out_data.rdata);
877 * Marshall directly into the outgoing PDU space. We
878 * must do this as we need to set to the bind response
879 * header and are never sending more than one PDU here.
882 prs_init_empty( &outgoing_pdu, p->mem_ctx, MARSHALL);
883 prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
886 * Initialize a fault header.
889 init_rpc_hdr(&fault_hdr, RPC_FAULT, RPC_FLG_FIRST | RPC_FLG_LAST | RPC_FLG_NOCALL,
890 p->hdr.call_id, RPC_HEADER_LEN + RPC_HDR_RESP_LEN + RPC_HDR_FAULT_LEN, 0);
893 * Initialize the HDR_RESP and FAULT parts of the PDU.
896 memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
898 fault_resp.status = status;
899 fault_resp.reserved = 0;
902 * Marshall the header into the outgoing PDU.
905 if(!smb_io_rpc_hdr("", &fault_hdr, &outgoing_pdu, 0)) {
906 DEBUG(0,("setup_fault_pdu: marshalling of RPC_HDR failed.\n"));
907 prs_mem_free(&outgoing_pdu);
911 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &outgoing_pdu, 0)) {
912 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_RESP.\n"));
913 prs_mem_free(&outgoing_pdu);
917 if(!smb_io_rpc_hdr_fault("fault", &fault_resp, &outgoing_pdu, 0)) {
918 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_FAULT.\n"));
919 prs_mem_free(&outgoing_pdu);
923 p->out_data.data_sent_length = 0;
924 p->out_data.current_pdu_len = prs_offset(&outgoing_pdu);
925 p->out_data.current_pdu_sent = 0;
927 prs_mem_free(&outgoing_pdu);
932 /*******************************************************************
933 Marshall a cancel_ack pdu.
934 We should probably check the auth-verifier here.
935 *******************************************************************/
937 bool setup_cancel_ack_reply(pipes_struct *p, prs_struct *rpc_in_p)
939 prs_struct outgoing_pdu;
940 RPC_HDR ack_reply_hdr;
942 /* Free any memory in the current return data buffer. */
943 prs_mem_free(&p->out_data.rdata);
946 * Marshall directly into the outgoing PDU space. We
947 * must do this as we need to set to the bind response
948 * header and are never sending more than one PDU here.
951 prs_init_empty( &outgoing_pdu, p->mem_ctx, MARSHALL);
952 prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
955 * Initialize a cancel_ack header.
958 init_rpc_hdr(&ack_reply_hdr, RPC_CANCEL_ACK, RPC_FLG_FIRST | RPC_FLG_LAST,
959 p->hdr.call_id, RPC_HEADER_LEN, 0);
962 * Marshall the header into the outgoing PDU.
965 if(!smb_io_rpc_hdr("", &ack_reply_hdr, &outgoing_pdu, 0)) {
966 DEBUG(0,("setup_cancel_ack_reply: marshalling of RPC_HDR failed.\n"));
967 prs_mem_free(&outgoing_pdu);
971 p->out_data.data_sent_length = 0;
972 p->out_data.current_pdu_len = prs_offset(&outgoing_pdu);
973 p->out_data.current_pdu_sent = 0;
975 prs_mem_free(&outgoing_pdu);
980 /*******************************************************************
981 Ensure a bind request has the correct abstract & transfer interface.
982 Used to reject unknown binds from Win2k.
983 *******************************************************************/
985 bool check_bind_req(struct pipes_struct *p, RPC_IFACE* abstract,
986 RPC_IFACE* transfer, uint32 context_id)
989 struct pipe_rpc_fns *context_fns;
991 DEBUG(3,("check_bind_req for %s\n", p->name));
993 /* we have to check all now since win2k introduced a new UUID on the lsaprpc pipe */
995 for (i=0; i<rpc_lookup_size; i++) {
996 DEBUGADD(10, ("checking %s\n", rpc_lookup[i].pipe.clnt));
997 if (strequal(rpc_lookup[i].pipe.clnt, p->name)
998 && ndr_syntax_id_equal(
999 abstract, &rpc_lookup[i].rpc_interface)
1000 && ndr_syntax_id_equal(
1001 transfer, &ndr_transfer_syntax)) {
1006 if (i == rpc_lookup_size) {
1010 context_fns = SMB_MALLOC_P(struct pipe_rpc_fns);
1011 if (context_fns == NULL) {
1012 DEBUG(0,("check_bind_req: malloc() failed!\n"));
1016 context_fns->cmds = rpc_lookup[i].cmds;
1017 context_fns->n_cmds = rpc_lookup[i].n_cmds;
1018 context_fns->context_id = context_id;
1020 /* add to the list of open contexts */
1022 DLIST_ADD( p->contexts, context_fns );
1027 /*******************************************************************
1028 Register commands to an RPC pipe
1029 *******************************************************************/
1031 NTSTATUS rpc_pipe_register_commands(int version, const char *clnt,
1033 const struct ndr_syntax_id *interface,
1034 const struct api_struct *cmds, int size)
1036 struct rpc_table *rpc_entry;
1038 if (!clnt || !srv || !cmds) {
1039 return NT_STATUS_INVALID_PARAMETER;
1042 if (version != SMB_RPC_INTERFACE_VERSION) {
1043 DEBUG(0,("Can't register rpc commands!\n"
1044 "You tried to register a rpc module with SMB_RPC_INTERFACE_VERSION %d"
1045 ", while this version of samba uses version %d!\n",
1046 version,SMB_RPC_INTERFACE_VERSION));
1047 return NT_STATUS_OBJECT_TYPE_MISMATCH;
1052 * we still need to make sure that don't register the same commands twice!!!
1057 /* We use a temporary variable because this call can fail and
1058 rpc_lookup will still be valid afterwards. It could then succeed if
1059 called again later */
1061 rpc_entry = SMB_REALLOC_ARRAY_KEEP_OLD_ON_ERROR(rpc_lookup, struct rpc_table, rpc_lookup_size);
1062 if (NULL == rpc_entry) {
1064 DEBUG(0, ("rpc_pipe_register_commands: memory allocation failed\n"));
1065 return NT_STATUS_NO_MEMORY;
1067 rpc_lookup = rpc_entry;
1070 rpc_entry = rpc_lookup + (rpc_lookup_size - 1);
1071 ZERO_STRUCTP(rpc_entry);
1072 rpc_entry->pipe.clnt = SMB_STRDUP(clnt);
1073 rpc_entry->pipe.srv = SMB_STRDUP(srv);
1074 rpc_entry->rpc_interface = *interface;
1075 rpc_entry->cmds = cmds;
1076 rpc_entry->n_cmds = size;
1078 return NT_STATUS_OK;
1082 * Is a named pipe known?
1083 * @param[in] cli_filename The pipe name requested by the client
1084 * @result Do we want to serve this?
1086 bool is_known_pipename(const char *cli_filename)
1088 const char *pipename = cli_filename;
1091 if (strnequal(pipename, "\\PIPE\\", 6)) {
1095 if (*pipename == '\\') {
1099 if (lp_disable_spoolss() && strequal(pipename, "spoolss")) {
1100 DEBUG(10, ("refusing spoolss access\n"));
1104 for (i=0; i<rpc_lookup_size; i++) {
1105 if (strequal(pipename, rpc_lookup[i].pipe.clnt)) {
1110 DEBUG(10, ("is_known_pipename: %s unknown\n", cli_filename));
1114 /*******************************************************************
1115 Handle a SPNEGO krb5 bind auth.
1116 *******************************************************************/
1118 static bool pipe_spnego_auth_bind_kerberos(pipes_struct *p, prs_struct *rpc_in_p, RPC_HDR_AUTH *pauth_info,
1119 DATA_BLOB *psecblob, prs_struct *pout_auth)
1124 /*******************************************************************
1125 Handle the first part of a SPNEGO bind auth.
1126 *******************************************************************/
1128 static bool pipe_spnego_auth_bind_negotiate(pipes_struct *p, prs_struct *rpc_in_p,
1129 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1135 char *OIDs[ASN1_MAX_OIDS];
1138 bool got_kerberos_mechanism = false;
1139 AUTH_NTLMSSP_STATE *a = NULL;
1140 RPC_HDR_AUTH auth_info;
1142 ZERO_STRUCT(secblob);
1144 ZERO_STRUCT(response);
1146 /* Grab the SPNEGO blob. */
1147 blob = data_blob(NULL,p->hdr.auth_len);
1149 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
1150 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to pull %u bytes - the SPNEGO auth header.\n",
1151 (unsigned int)p->hdr.auth_len ));
1155 if (blob.data[0] != ASN1_APPLICATION(0)) {
1159 /* parse out the OIDs and the first sec blob */
1160 if (!parse_negTokenTarg(blob, OIDs, &secblob)) {
1161 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to parse the security blob.\n"));
1165 if (strcmp(OID_KERBEROS5, OIDs[0]) == 0 || strcmp(OID_KERBEROS5_OLD, OIDs[0]) == 0) {
1166 got_kerberos_mechanism = true;
1169 for (i=0;OIDs[i];i++) {
1170 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got OID %s\n", OIDs[i]));
1173 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got secblob of size %lu\n", (unsigned long)secblob.length));
1175 if ( got_kerberos_mechanism && ((lp_security()==SEC_ADS) || lp_use_kerberos_keytab()) ) {
1176 bool ret = pipe_spnego_auth_bind_kerberos(p, rpc_in_p, pauth_info, &secblob, pout_auth);
1177 data_blob_free(&secblob);
1178 data_blob_free(&blob);
1182 if (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP && p->auth.a_u.auth_ntlmssp_state) {
1183 /* Free any previous auth type. */
1184 free_pipe_ntlmssp_auth_data(&p->auth);
1187 if (!got_kerberos_mechanism) {
1188 /* Initialize the NTLM engine. */
1189 status = auth_ntlmssp_start(&a);
1190 if (!NT_STATUS_IS_OK(status)) {
1195 * Pass the first security blob of data to it.
1196 * This can return an error or NT_STATUS_MORE_PROCESSING_REQUIRED
1197 * which means we need another packet to complete the bind.
1200 status = auth_ntlmssp_update(a, secblob, &chal);
1202 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1203 DEBUG(3,("pipe_spnego_auth_bind_negotiate: auth_ntlmssp_update failed.\n"));
1207 /* Generate the response blob we need for step 2 of the bind. */
1208 response = spnego_gen_auth_response(&chal, status, OID_NTLMSSP);
1211 * SPNEGO negotiate down to NTLMSSP. The subsequent
1212 * code to process follow-up packets is not complete
1215 response = spnego_gen_auth_response(NULL,
1216 NT_STATUS_MORE_PROCESSING_REQUIRED,
1220 /* Copy the blob into the pout_auth parse struct */
1221 init_rpc_hdr_auth(&auth_info, RPC_SPNEGO_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1222 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1223 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of RPC_HDR_AUTH failed.\n"));
1227 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1228 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of data blob failed.\n"));
1232 p->auth.a_u.auth_ntlmssp_state = a;
1233 p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
1234 p->auth.auth_type = PIPE_AUTH_TYPE_SPNEGO_NTLMSSP;
1236 data_blob_free(&blob);
1237 data_blob_free(&secblob);
1238 data_blob_free(&chal);
1239 data_blob_free(&response);
1241 /* We can't set pipe_bound True yet - we need an RPC_ALTER_CONTEXT response packet... */
1246 data_blob_free(&blob);
1247 data_blob_free(&secblob);
1248 data_blob_free(&chal);
1249 data_blob_free(&response);
1251 p->auth.a_u.auth_ntlmssp_state = NULL;
1256 /*******************************************************************
1257 Handle the second part of a SPNEGO bind auth.
1258 *******************************************************************/
1260 static bool pipe_spnego_auth_bind_continue(pipes_struct *p, prs_struct *rpc_in_p,
1261 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1263 RPC_HDR_AUTH auth_info;
1264 DATA_BLOB spnego_blob;
1265 DATA_BLOB auth_blob;
1266 DATA_BLOB auth_reply;
1268 AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
1270 ZERO_STRUCT(spnego_blob);
1271 ZERO_STRUCT(auth_blob);
1272 ZERO_STRUCT(auth_reply);
1273 ZERO_STRUCT(response);
1276 * NB. If we've negotiated down from krb5 to NTLMSSP we'll currently
1277 * fail here as 'a' == NULL.
1279 if (p->auth.auth_type != PIPE_AUTH_TYPE_SPNEGO_NTLMSSP || !a) {
1280 DEBUG(0,("pipe_spnego_auth_bind_continue: not in NTLMSSP auth state.\n"));
1284 /* Grab the SPNEGO blob. */
1285 spnego_blob = data_blob(NULL,p->hdr.auth_len);
1287 if (!prs_copy_data_out((char *)spnego_blob.data, rpc_in_p, p->hdr.auth_len)) {
1288 DEBUG(0,("pipe_spnego_auth_bind_continue: Failed to pull %u bytes - the SPNEGO auth header.\n",
1289 (unsigned int)p->hdr.auth_len ));
1293 if (spnego_blob.data[0] != ASN1_CONTEXT(1)) {
1294 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob type.\n"));
1298 if (!spnego_parse_auth(spnego_blob, &auth_blob)) {
1299 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob.\n"));
1304 * The following call actually checks the challenge/response data.
1305 * for correctness against the given DOMAIN\user name.
1308 if (!pipe_ntlmssp_verify_final(p, &auth_blob)) {
1312 data_blob_free(&spnego_blob);
1313 data_blob_free(&auth_blob);
1315 /* Generate the spnego "accept completed" blob - no incoming data. */
1316 response = spnego_gen_auth_response(&auth_reply, NT_STATUS_OK, OID_NTLMSSP);
1318 /* Copy the blob into the pout_auth parse struct */
1319 init_rpc_hdr_auth(&auth_info, RPC_SPNEGO_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1320 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1321 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of RPC_HDR_AUTH failed.\n"));
1325 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1326 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of data blob failed.\n"));
1330 data_blob_free(&auth_reply);
1331 data_blob_free(&response);
1333 p->pipe_bound = True;
1339 data_blob_free(&spnego_blob);
1340 data_blob_free(&auth_blob);
1341 data_blob_free(&auth_reply);
1342 data_blob_free(&response);
1344 free_pipe_ntlmssp_auth_data(&p->auth);
1345 p->auth.a_u.auth_ntlmssp_state = NULL;
1350 /*******************************************************************
1351 Handle an schannel bind auth.
1352 *******************************************************************/
1354 static bool pipe_schannel_auth_bind(pipes_struct *p, prs_struct *rpc_in_p,
1355 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1357 RPC_HDR_AUTH auth_info;
1358 RPC_AUTH_SCHANNEL_NEG neg;
1359 RPC_AUTH_VERIFIER auth_verifier;
1361 struct dcinfo *pdcinfo;
1363 DATA_BLOB session_key;
1365 if (!smb_io_rpc_auth_schannel_neg("", &neg, rpc_in_p, 0)) {
1366 DEBUG(0,("pipe_schannel_auth_bind: Could not unmarshal SCHANNEL auth neg\n"));
1371 * The neg.myname key here must match the remote computer name
1372 * given in the DOM_CLNT_SRV.uni_comp_name used on all netlogon pipe
1373 * operations that use credentials.
1377 ret = secrets_restore_schannel_session_info(p->mem_ctx, neg.myname, &pdcinfo);
1381 DEBUG(0, ("pipe_schannel_auth_bind: Attempt to bind using schannel without successful serverauth2\n"));
1385 p->auth.a_u.schannel_auth = talloc(p, struct schannel_auth_struct);
1386 if (!p->auth.a_u.schannel_auth) {
1387 TALLOC_FREE(pdcinfo);
1391 memset(p->auth.a_u.schannel_auth->sess_key, 0, sizeof(p->auth.a_u.schannel_auth->sess_key));
1392 memcpy(p->auth.a_u.schannel_auth->sess_key, pdcinfo->sess_key,
1393 sizeof(pdcinfo->sess_key));
1395 TALLOC_FREE(pdcinfo);
1397 p->auth.a_u.schannel_auth->seq_num = 0;
1400 * JRA. Should we also copy the schannel session key into the pipe session key p->session_key
1401 * here ? We do that for NTLMSSP, but the session key is already set up from the vuser
1402 * struct of the person who opened the pipe. I need to test this further. JRA.
1404 * VL. As we are mapping this to guest set the generic key
1405 * "SystemLibraryDTC" key here. It's a bit difficult to test against
1406 * W2k3, as it does not allow schannel binds against SAMR and LSA
1410 session_key = generic_session_key();
1411 if (session_key.data == NULL) {
1412 DEBUG(0, ("pipe_schannel_auth_bind: Could not alloc session"
1417 ret = server_info_set_session_key(p->server_info, session_key);
1419 data_blob_free(&session_key);
1422 DEBUG(0, ("server_info_set_session_key failed\n"));
1426 init_rpc_hdr_auth(&auth_info, RPC_SCHANNEL_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1427 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1428 DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1432 /*** SCHANNEL verifier ***/
1434 init_rpc_auth_verifier(&auth_verifier, "\001", 0x0);
1435 if(!smb_io_rpc_schannel_verifier("", &auth_verifier, pout_auth, 0)) {
1436 DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_AUTH_VERIFIER failed.\n"));
1440 prs_align(pout_auth);
1443 if(!prs_uint32("flags ", pout_auth, 0, &flags)) {
1447 DEBUG(10,("pipe_schannel_auth_bind: schannel auth: domain [%s] myname [%s]\n",
1448 neg.domain, neg.myname));
1450 /* We're finished with this bind - no more packets. */
1451 p->auth.auth_data_free_func = NULL;
1452 p->auth.auth_type = PIPE_AUTH_TYPE_SCHANNEL;
1454 p->pipe_bound = True;
1459 /*******************************************************************
1460 Handle an NTLMSSP bind auth.
1461 *******************************************************************/
1463 static bool pipe_ntlmssp_auth_bind(pipes_struct *p, prs_struct *rpc_in_p,
1464 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1466 RPC_HDR_AUTH auth_info;
1470 AUTH_NTLMSSP_STATE *a = NULL;
1473 ZERO_STRUCT(response);
1475 /* Grab the NTLMSSP blob. */
1476 blob = data_blob(NULL,p->hdr.auth_len);
1478 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
1479 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to pull %u bytes - the NTLM auth header.\n",
1480 (unsigned int)p->hdr.auth_len ));
1484 if (strncmp((char *)blob.data, "NTLMSSP", 7) != 0) {
1485 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to read NTLMSSP in blob\n"));
1489 /* We have an NTLMSSP blob. */
1490 status = auth_ntlmssp_start(&a);
1491 if (!NT_STATUS_IS_OK(status)) {
1492 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_start failed: %s\n",
1493 nt_errstr(status) ));
1497 status = auth_ntlmssp_update(a, blob, &response);
1498 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1499 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_update failed: %s\n",
1500 nt_errstr(status) ));
1504 data_blob_free(&blob);
1506 /* Copy the blob into the pout_auth parse struct */
1507 init_rpc_hdr_auth(&auth_info, RPC_NTLMSSP_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1508 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1509 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1513 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1514 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of data blob failed.\n"));
1518 p->auth.a_u.auth_ntlmssp_state = a;
1519 p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
1520 p->auth.auth_type = PIPE_AUTH_TYPE_NTLMSSP;
1522 data_blob_free(&blob);
1523 data_blob_free(&response);
1525 DEBUG(10,("pipe_ntlmssp_auth_bind: NTLMSSP auth started\n"));
1527 /* We can't set pipe_bound True yet - we need an RPC_AUTH3 response packet... */
1532 data_blob_free(&blob);
1533 data_blob_free(&response);
1535 free_pipe_ntlmssp_auth_data(&p->auth);
1536 p->auth.a_u.auth_ntlmssp_state = NULL;
1540 /*******************************************************************
1541 Respond to a pipe bind request.
1542 *******************************************************************/
1544 bool api_pipe_bind_req(pipes_struct *p, prs_struct *rpc_in_p)
1548 RPC_HDR_AUTH auth_info;
1550 fstring ack_pipe_name;
1551 prs_struct out_hdr_ba;
1552 prs_struct out_auth;
1553 prs_struct outgoing_rpc;
1556 unsigned int auth_type = RPC_ANONYMOUS_AUTH_TYPE;
1558 /* No rebinds on a bound pipe - use alter context. */
1559 if (p->pipe_bound) {
1560 DEBUG(2,("api_pipe_bind_req: rejecting bind request on bound pipe %s.\n", p->pipe_srv_name));
1561 return setup_bind_nak(p);
1564 prs_init_empty( &outgoing_rpc, p->mem_ctx, MARSHALL);
1567 * Marshall directly into the outgoing PDU space. We
1568 * must do this as we need to set to the bind response
1569 * header and are never sending more than one PDU here.
1572 prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
1575 * Setup the memory to marshall the ba header, and the
1579 if(!prs_init(&out_hdr_ba, 1024, p->mem_ctx, MARSHALL)) {
1580 DEBUG(0,("api_pipe_bind_req: malloc out_hdr_ba failed.\n"));
1581 prs_mem_free(&outgoing_rpc);
1585 if(!prs_init(&out_auth, 1024, p->mem_ctx, MARSHALL)) {
1586 DEBUG(0,("api_pipe_bind_req: malloc out_auth failed.\n"));
1587 prs_mem_free(&outgoing_rpc);
1588 prs_mem_free(&out_hdr_ba);
1592 DEBUG(5,("api_pipe_bind_req: decode request. %d\n", __LINE__));
1594 ZERO_STRUCT(hdr_rb);
1596 /* decode the bind request */
1598 if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_in_p, 0)) {
1599 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_RB "
1604 if (hdr_rb.num_contexts == 0) {
1605 DEBUG(0, ("api_pipe_bind_req: no rpc contexts around\n"));
1610 * Try and find the correct pipe name to ensure
1611 * that this is a pipe name we support.
1614 for (i = 0; i < rpc_lookup_size; i++) {
1615 if (ndr_syntax_id_equal(&rpc_lookup[i].rpc_interface,
1616 &hdr_rb.rpc_context[0].abstract)) {
1617 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1618 rpc_lookup[i].pipe.clnt, rpc_lookup[i].pipe.srv));
1619 fstrcpy(p->name, rpc_lookup[i].pipe.clnt);
1620 fstrcpy(p->pipe_srv_name, rpc_lookup[i].pipe.srv);
1625 if (i == rpc_lookup_size) {
1626 if (NT_STATUS_IS_ERR(smb_probe_module("rpc", p->name))) {
1627 DEBUG(3,("api_pipe_bind_req: Unknown pipe name %s in bind request.\n",
1629 prs_mem_free(&outgoing_rpc);
1630 prs_mem_free(&out_hdr_ba);
1631 prs_mem_free(&out_auth);
1633 return setup_bind_nak(p);
1636 for (i = 0; i < rpc_lookup_size; i++) {
1637 if (strequal(rpc_lookup[i].pipe.clnt, p->name)) {
1638 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1639 rpc_lookup[i].pipe.clnt, rpc_lookup[i].pipe.srv));
1640 fstrcpy(p->pipe_srv_name, rpc_lookup[i].pipe.srv);
1645 if (i == rpc_lookup_size) {
1646 DEBUG(0, ("module %s doesn't provide functions for pipe %s!\n", p->name, p->name));
1651 /* name has to be \PIPE\xxxxx */
1652 fstrcpy(ack_pipe_name, "\\PIPE\\");
1653 fstrcat(ack_pipe_name, p->pipe_srv_name);
1655 DEBUG(5,("api_pipe_bind_req: make response. %d\n", __LINE__));
1658 * Check if this is an authenticated bind request.
1661 if (p->hdr.auth_len) {
1663 * Decode the authentication verifier.
1666 if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
1667 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1671 auth_type = auth_info.auth_type;
1673 /* Work out if we have to sign or seal etc. */
1674 switch (auth_info.auth_level) {
1675 case RPC_AUTH_LEVEL_INTEGRITY:
1676 p->auth.auth_level = PIPE_AUTH_LEVEL_INTEGRITY;
1678 case RPC_AUTH_LEVEL_PRIVACY:
1679 p->auth.auth_level = PIPE_AUTH_LEVEL_PRIVACY;
1682 DEBUG(0,("api_pipe_bind_req: unexpected auth level (%u).\n",
1683 (unsigned int)auth_info.auth_level ));
1687 ZERO_STRUCT(auth_info);
1690 assoc_gid = hdr_rb.bba.assoc_gid ? hdr_rb.bba.assoc_gid : 0x53f0;
1693 case RPC_NTLMSSP_AUTH_TYPE:
1694 if (!pipe_ntlmssp_auth_bind(p, rpc_in_p, &auth_info, &out_auth)) {
1700 case RPC_SCHANNEL_AUTH_TYPE:
1701 if (!pipe_schannel_auth_bind(p, rpc_in_p, &auth_info, &out_auth)) {
1706 case RPC_SPNEGO_AUTH_TYPE:
1707 if (!pipe_spnego_auth_bind_negotiate(p, rpc_in_p, &auth_info, &out_auth)) {
1712 case RPC_ANONYMOUS_AUTH_TYPE:
1713 /* Unauthenticated bind request. */
1714 /* Get the authenticated pipe user from current_user */
1715 if (!copy_current_user(&p->pipe_user, ¤t_user)) {
1716 DEBUG(10, ("Could not copy current user\n"));
1719 /* We're finished - no more packets. */
1720 p->auth.auth_type = PIPE_AUTH_TYPE_NONE;
1721 /* We must set the pipe auth_level here also. */
1722 p->auth.auth_level = PIPE_AUTH_LEVEL_NONE;
1723 p->pipe_bound = True;
1724 /* The session key was initialized from the SMB
1725 * session in make_internal_rpc_pipe_p */
1729 DEBUG(0,("api_pipe_bind_req: unknown auth type %x requested.\n", auth_type ));
1734 * Create the bind response struct.
1737 /* If the requested abstract synt uuid doesn't match our client pipe,
1738 reject the bind_ack & set the transfer interface synt to all 0's,
1739 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1741 Needed when adding entries to a DACL from NT5 - SK */
1743 if(check_bind_req(p, &hdr_rb.rpc_context[0].abstract, &hdr_rb.rpc_context[0].transfer[0],
1744 hdr_rb.rpc_context[0].context_id )) {
1745 init_rpc_hdr_ba(&hdr_ba,
1746 RPC_MAX_PDU_FRAG_LEN,
1747 RPC_MAX_PDU_FRAG_LEN,
1751 &hdr_rb.rpc_context[0].transfer[0]);
1753 RPC_IFACE null_interface;
1754 ZERO_STRUCT(null_interface);
1755 /* Rejection reason: abstract syntax not supported */
1756 init_rpc_hdr_ba(&hdr_ba, RPC_MAX_PDU_FRAG_LEN,
1757 RPC_MAX_PDU_FRAG_LEN, assoc_gid,
1758 ack_pipe_name, 0x1, 0x2, 0x1,
1760 p->pipe_bound = False;
1767 if(!smb_io_rpc_hdr_ba("", &hdr_ba, &out_hdr_ba, 0)) {
1768 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR_BA failed.\n"));
1773 * Create the header, now we know the length.
1776 if (prs_offset(&out_auth)) {
1777 auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
1780 init_rpc_hdr(&p->hdr, RPC_BINDACK, RPC_FLG_FIRST | RPC_FLG_LAST,
1782 RPC_HEADER_LEN + prs_offset(&out_hdr_ba) + prs_offset(&out_auth),
1786 * Marshall the header into the outgoing PDU.
1789 if(!smb_io_rpc_hdr("", &p->hdr, &outgoing_rpc, 0)) {
1790 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR failed.\n"));
1795 * Now add the RPC_HDR_BA and any auth needed.
1798 if(!prs_append_prs_data( &outgoing_rpc, &out_hdr_ba)) {
1799 DEBUG(0,("api_pipe_bind_req: append of RPC_HDR_BA failed.\n"));
1803 if (auth_len && !prs_append_prs_data( &outgoing_rpc, &out_auth)) {
1804 DEBUG(0,("api_pipe_bind_req: append of auth info failed.\n"));
1809 * Setup the lengths for the initial reply.
1812 p->out_data.data_sent_length = 0;
1813 p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
1814 p->out_data.current_pdu_sent = 0;
1816 prs_mem_free(&out_hdr_ba);
1817 prs_mem_free(&out_auth);
1823 prs_mem_free(&outgoing_rpc);
1824 prs_mem_free(&out_hdr_ba);
1825 prs_mem_free(&out_auth);
1826 return setup_bind_nak(p);
1829 /****************************************************************************
1830 Deal with an alter context call. Can be third part of 3 leg auth request for
1832 ****************************************************************************/
1834 bool api_pipe_alter_context(pipes_struct *p, prs_struct *rpc_in_p)
1838 RPC_HDR_AUTH auth_info;
1840 fstring ack_pipe_name;
1841 prs_struct out_hdr_ba;
1842 prs_struct out_auth;
1843 prs_struct outgoing_rpc;
1846 prs_init_empty( &outgoing_rpc, p->mem_ctx, MARSHALL);
1849 * Marshall directly into the outgoing PDU space. We
1850 * must do this as we need to set to the bind response
1851 * header and are never sending more than one PDU here.
1854 prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
1857 * Setup the memory to marshall the ba header, and the
1861 if(!prs_init(&out_hdr_ba, 1024, p->mem_ctx, MARSHALL)) {
1862 DEBUG(0,("api_pipe_alter_context: malloc out_hdr_ba failed.\n"));
1863 prs_mem_free(&outgoing_rpc);
1867 if(!prs_init(&out_auth, 1024, p->mem_ctx, MARSHALL)) {
1868 DEBUG(0,("api_pipe_alter_context: malloc out_auth failed.\n"));
1869 prs_mem_free(&outgoing_rpc);
1870 prs_mem_free(&out_hdr_ba);
1874 ZERO_STRUCT(hdr_rb);
1876 DEBUG(5,("api_pipe_alter_context: decode request. %d\n", __LINE__));
1878 /* decode the alter context request */
1879 if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_in_p, 0)) {
1880 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_RB struct.\n"));
1884 /* secondary address CAN be NULL
1885 * as the specs say it's ignored.
1886 * It MUST be NULL to have the spoolss working.
1888 fstrcpy(ack_pipe_name,"");
1890 DEBUG(5,("api_pipe_alter_context: make response. %d\n", __LINE__));
1893 * Check if this is an authenticated alter context request.
1896 if (p->hdr.auth_len != 0) {
1898 * Decode the authentication verifier.
1901 if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
1902 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1907 * Currently only the SPNEGO auth type uses the alter ctx
1908 * response in place of the NTLMSSP auth3 type.
1911 if (auth_info.auth_type == RPC_SPNEGO_AUTH_TYPE) {
1912 /* We can only finish if the pipe is unbound. */
1913 if (!p->pipe_bound) {
1914 if (!pipe_spnego_auth_bind_continue(p, rpc_in_p, &auth_info, &out_auth)) {
1922 ZERO_STRUCT(auth_info);
1925 assoc_gid = hdr_rb.bba.assoc_gid ? hdr_rb.bba.assoc_gid : 0x53f0;
1928 * Create the bind response struct.
1931 /* If the requested abstract synt uuid doesn't match our client pipe,
1932 reject the bind_ack & set the transfer interface synt to all 0's,
1933 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1935 Needed when adding entries to a DACL from NT5 - SK */
1937 if(check_bind_req(p, &hdr_rb.rpc_context[0].abstract, &hdr_rb.rpc_context[0].transfer[0],
1938 hdr_rb.rpc_context[0].context_id )) {
1939 init_rpc_hdr_ba(&hdr_ba,
1940 RPC_MAX_PDU_FRAG_LEN,
1941 RPC_MAX_PDU_FRAG_LEN,
1945 &hdr_rb.rpc_context[0].transfer[0]);
1947 RPC_IFACE null_interface;
1948 ZERO_STRUCT(null_interface);
1949 /* Rejection reason: abstract syntax not supported */
1950 init_rpc_hdr_ba(&hdr_ba, RPC_MAX_PDU_FRAG_LEN,
1951 RPC_MAX_PDU_FRAG_LEN, assoc_gid,
1952 ack_pipe_name, 0x1, 0x2, 0x1,
1954 p->pipe_bound = False;
1961 if(!smb_io_rpc_hdr_ba("", &hdr_ba, &out_hdr_ba, 0)) {
1962 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR_BA failed.\n"));
1967 * Create the header, now we know the length.
1970 if (prs_offset(&out_auth)) {
1971 auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
1974 init_rpc_hdr(&p->hdr, RPC_ALTCONTRESP, RPC_FLG_FIRST | RPC_FLG_LAST,
1976 RPC_HEADER_LEN + prs_offset(&out_hdr_ba) + prs_offset(&out_auth),
1980 * Marshall the header into the outgoing PDU.
1983 if(!smb_io_rpc_hdr("", &p->hdr, &outgoing_rpc, 0)) {
1984 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR failed.\n"));
1989 * Now add the RPC_HDR_BA and any auth needed.
1992 if(!prs_append_prs_data( &outgoing_rpc, &out_hdr_ba)) {
1993 DEBUG(0,("api_pipe_alter_context: append of RPC_HDR_BA failed.\n"));
1997 if (auth_len && !prs_append_prs_data( &outgoing_rpc, &out_auth)) {
1998 DEBUG(0,("api_pipe_alter_context: append of auth info failed.\n"));
2003 * Setup the lengths for the initial reply.
2006 p->out_data.data_sent_length = 0;
2007 p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
2008 p->out_data.current_pdu_sent = 0;
2010 prs_mem_free(&out_hdr_ba);
2011 prs_mem_free(&out_auth);
2017 prs_mem_free(&outgoing_rpc);
2018 prs_mem_free(&out_hdr_ba);
2019 prs_mem_free(&out_auth);
2020 return setup_bind_nak(p);
2023 /****************************************************************************
2024 Deal with NTLMSSP sign & seal processing on an RPC request.
2025 ****************************************************************************/
2027 bool api_pipe_ntlmssp_auth_process(pipes_struct *p, prs_struct *rpc_in,
2028 uint32 *p_ss_padding_len, NTSTATUS *pstatus)
2030 RPC_HDR_AUTH auth_info;
2031 uint32 auth_len = p->hdr.auth_len;
2032 uint32 save_offset = prs_offset(rpc_in);
2033 AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
2034 unsigned char *data = NULL;
2036 unsigned char *full_packet_data = NULL;
2037 size_t full_packet_data_len;
2038 DATA_BLOB auth_blob;
2040 *pstatus = NT_STATUS_OK;
2042 if (p->auth.auth_level == PIPE_AUTH_LEVEL_NONE || p->auth.auth_level == PIPE_AUTH_LEVEL_CONNECT) {
2047 *pstatus = NT_STATUS_INVALID_PARAMETER;
2051 /* Ensure there's enough data for an authenticated request. */
2052 if ((auth_len > RPC_MAX_SIGN_SIZE) ||
2053 (RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_HDR_AUTH_LEN + auth_len > p->hdr.frag_len)) {
2054 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len %u is too large.\n",
2055 (unsigned int)auth_len ));
2056 *pstatus = NT_STATUS_INVALID_PARAMETER;
2061 * We need the full packet data + length (minus auth stuff) as well as the packet data + length
2062 * after the RPC header.
2063 * We need to pass in the full packet (minus auth len) to the NTLMSSP sign and check seal
2064 * functions as NTLMv2 checks the rpc headers also.
2067 data = (unsigned char *)(prs_data_p(rpc_in) + RPC_HDR_REQ_LEN);
2068 data_len = (size_t)(p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN - RPC_HDR_AUTH_LEN - auth_len);
2070 full_packet_data = p->in_data.current_in_pdu;
2071 full_packet_data_len = p->hdr.frag_len - auth_len;
2073 /* Pull the auth header and the following data into a blob. */
2074 if(!prs_set_offset(rpc_in, RPC_HDR_REQ_LEN + data_len)) {
2075 DEBUG(0,("api_pipe_ntlmssp_auth_process: cannot move offset to %u.\n",
2076 (unsigned int)RPC_HDR_REQ_LEN + (unsigned int)data_len ));
2077 *pstatus = NT_STATUS_INVALID_PARAMETER;
2081 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
2082 DEBUG(0,("api_pipe_ntlmssp_auth_process: failed to unmarshall RPC_HDR_AUTH.\n"));
2083 *pstatus = NT_STATUS_INVALID_PARAMETER;
2087 auth_blob.data = (unsigned char *)prs_data_p(rpc_in) + prs_offset(rpc_in);
2088 auth_blob.length = auth_len;
2090 switch (p->auth.auth_level) {
2091 case PIPE_AUTH_LEVEL_PRIVACY:
2092 /* Data is encrypted. */
2093 *pstatus = ntlmssp_unseal_packet(a->ntlmssp_state,
2096 full_packet_data_len,
2098 if (!NT_STATUS_IS_OK(*pstatus)) {
2102 case PIPE_AUTH_LEVEL_INTEGRITY:
2103 /* Data is signed. */
2104 *pstatus = ntlmssp_check_packet(a->ntlmssp_state,
2107 full_packet_data_len,
2109 if (!NT_STATUS_IS_OK(*pstatus)) {
2114 *pstatus = NT_STATUS_INVALID_PARAMETER;
2119 * Return the current pointer to the data offset.
2122 if(!prs_set_offset(rpc_in, save_offset)) {
2123 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
2124 (unsigned int)save_offset ));
2125 *pstatus = NT_STATUS_INVALID_PARAMETER;
2130 * Remember the padding length. We must remove it from the real data
2131 * stream once the sign/seal is done.
2134 *p_ss_padding_len = auth_info.auth_pad_len;
2139 /****************************************************************************
2140 Deal with schannel processing on an RPC request.
2141 ****************************************************************************/
2143 bool api_pipe_schannel_process(pipes_struct *p, prs_struct *rpc_in, uint32 *p_ss_padding_len)
2147 uint32 save_offset = prs_offset(rpc_in);
2148 RPC_HDR_AUTH auth_info;
2149 RPC_AUTH_SCHANNEL_CHK schannel_chk;
2151 auth_len = p->hdr.auth_len;
2153 if (auth_len != RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN) {
2154 DEBUG(0,("Incorrect auth_len %u.\n", (unsigned int)auth_len ));
2159 * The following is that length of the data we must verify or unseal.
2160 * This doesn't include the RPC headers or the auth_len or the RPC_HDR_AUTH_LEN
2161 * preceeding the auth_data.
2164 if (p->hdr.frag_len < RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_HDR_AUTH_LEN + auth_len) {
2165 DEBUG(0,("Incorrect frag %u, auth %u.\n",
2166 (unsigned int)p->hdr.frag_len,
2167 (unsigned int)auth_len ));
2171 data_len = p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN -
2172 RPC_HDR_AUTH_LEN - auth_len;
2174 DEBUG(5,("data %d auth %d\n", data_len, auth_len));
2176 if(!prs_set_offset(rpc_in, RPC_HDR_REQ_LEN + data_len)) {
2177 DEBUG(0,("cannot move offset to %u.\n",
2178 (unsigned int)RPC_HDR_REQ_LEN + data_len ));
2182 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
2183 DEBUG(0,("failed to unmarshall RPC_HDR_AUTH.\n"));
2187 if (auth_info.auth_type != RPC_SCHANNEL_AUTH_TYPE) {
2188 DEBUG(0,("Invalid auth info %d on schannel\n",
2189 auth_info.auth_type));
2193 if(!smb_io_rpc_auth_schannel_chk("", RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN, &schannel_chk, rpc_in, 0)) {
2194 DEBUG(0,("failed to unmarshal RPC_AUTH_SCHANNEL_CHK.\n"));
2198 if (!schannel_decode(p->auth.a_u.schannel_auth,
2200 SENDER_IS_INITIATOR,
2202 prs_data_p(rpc_in)+RPC_HDR_REQ_LEN, data_len)) {
2203 DEBUG(3,("failed to decode PDU\n"));
2208 * Return the current pointer to the data offset.
2211 if(!prs_set_offset(rpc_in, save_offset)) {
2212 DEBUG(0,("failed to set offset back to %u\n",
2213 (unsigned int)save_offset ));
2217 /* The sequence number gets incremented on both send and receive. */
2218 p->auth.a_u.schannel_auth->seq_num++;
2221 * Remember the padding length. We must remove it from the real data
2222 * stream once the sign/seal is done.
2225 *p_ss_padding_len = auth_info.auth_pad_len;
2230 /****************************************************************************
2231 Return a user struct for a pipe user.
2232 ****************************************************************************/
2234 struct current_user *get_current_user(struct current_user *user, pipes_struct *p)
2236 if (p->pipe_bound &&
2237 (p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP ||
2238 (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP))) {
2239 memcpy(user, &p->pipe_user, sizeof(struct current_user));
2241 memcpy(user, ¤t_user, sizeof(struct current_user));
2247 /****************************************************************************
2248 Find the set of RPC functions associated with this context_id
2249 ****************************************************************************/
2251 static PIPE_RPC_FNS* find_pipe_fns_by_context( PIPE_RPC_FNS *list, uint32 context_id )
2253 PIPE_RPC_FNS *fns = NULL;
2254 PIPE_RPC_FNS *tmp = NULL;
2257 DEBUG(0,("find_pipe_fns_by_context: ERROR! No context list for pipe!\n"));
2261 for (tmp=list; tmp; tmp=tmp->next ) {
2262 if ( tmp->context_id == context_id )
2271 /****************************************************************************
2273 ****************************************************************************/
2275 void free_pipe_rpc_context( PIPE_RPC_FNS *list )
2277 PIPE_RPC_FNS *tmp = list;
2289 static bool api_rpcTNP(pipes_struct *p, const char *rpc_name,
2290 const struct api_struct *api_rpc_cmds, int n_cmds);
2292 /****************************************************************************
2293 Find the correct RPC function to call for this request.
2294 If the pipe is authenticated then become the correct UNIX user
2295 before doing the call.
2296 ****************************************************************************/
2298 bool api_pipe_request(pipes_struct *p)
2301 bool changed_user = False;
2302 PIPE_RPC_FNS *pipe_fns;
2304 if (p->pipe_bound &&
2305 ((p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP) ||
2306 (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP))) {
2307 if(!become_authenticated_pipe_user(p)) {
2308 prs_mem_free(&p->out_data.rdata);
2311 changed_user = True;
2314 DEBUG(5, ("Requested \\PIPE\\%s\n", p->name));
2316 /* get the set of RPC functions for this context */
2318 pipe_fns = find_pipe_fns_by_context(p->contexts, p->hdr_req.context_id);
2321 TALLOC_CTX *frame = talloc_stackframe();
2322 ret = api_rpcTNP(p, p->name, pipe_fns->cmds, pipe_fns->n_cmds);
2326 DEBUG(0,("api_pipe_request: No rpc function table associated with context [%d] on pipe [%s]\n",
2327 p->hdr_req.context_id, p->name));
2331 unbecome_authenticated_pipe_user();
2337 /*******************************************************************
2338 Calls the underlying RPC function for a named pipe.
2339 ********************************************************************/
2341 static bool api_rpcTNP(pipes_struct *p, const char *rpc_name,
2342 const struct api_struct *api_rpc_cmds, int n_cmds)
2346 uint32 offset1, offset2;
2348 /* interpret the command */
2349 DEBUG(4,("api_rpcTNP: %s op 0x%x - ", rpc_name, p->hdr_req.opnum));
2351 slprintf(name, sizeof(name)-1, "in_%s", rpc_name);
2352 prs_dump(name, p->hdr_req.opnum, &p->in_data.data);
2354 for (fn_num = 0; fn_num < n_cmds; fn_num++) {
2355 if (api_rpc_cmds[fn_num].opnum == p->hdr_req.opnum && api_rpc_cmds[fn_num].fn != NULL) {
2356 DEBUG(3,("api_rpcTNP: rpc command: %s\n", api_rpc_cmds[fn_num].name));
2361 if (fn_num == n_cmds) {
2363 * For an unknown RPC just return a fault PDU but
2364 * return True to allow RPC's on the pipe to continue
2365 * and not put the pipe into fault state. JRA.
2367 DEBUG(4, ("unknown\n"));
2368 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
2372 offset1 = prs_offset(&p->out_data.rdata);
2374 DEBUG(6, ("api_rpc_cmds[%d].fn == %p\n",
2375 fn_num, api_rpc_cmds[fn_num].fn));
2376 /* do the actual command */
2377 if(!api_rpc_cmds[fn_num].fn(p)) {
2378 DEBUG(0,("api_rpcTNP: %s: %s failed.\n", rpc_name, api_rpc_cmds[fn_num].name));
2379 prs_mem_free(&p->out_data.rdata);
2383 if (p->bad_handle_fault_state) {
2384 DEBUG(4,("api_rpcTNP: bad handle fault return.\n"));
2385 p->bad_handle_fault_state = False;
2386 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_CONTEXT_MISMATCH));
2390 if (p->rng_fault_state) {
2391 DEBUG(4, ("api_rpcTNP: rng fault return\n"));
2392 p->rng_fault_state = False;
2393 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
2397 slprintf(name, sizeof(name)-1, "out_%s", rpc_name);
2398 offset2 = prs_offset(&p->out_data.rdata);
2399 prs_set_offset(&p->out_data.rdata, offset1);
2400 prs_dump(name, p->hdr_req.opnum, &p->out_data.rdata);
2401 prs_set_offset(&p->out_data.rdata, offset2);
2403 DEBUG(5,("api_rpcTNP: called %s successfully\n", rpc_name));
2405 /* Check for buffer underflow in rpc parsing */
2407 if ((DEBUGLEVEL >= 10) &&
2408 (prs_offset(&p->in_data.data) != prs_data_size(&p->in_data.data))) {
2409 size_t data_len = prs_data_size(&p->in_data.data) - prs_offset(&p->in_data.data);
2410 char *data = (char *)SMB_MALLOC(data_len);
2412 DEBUG(10, ("api_rpcTNP: rpc input buffer underflow (parse error?)\n"));
2414 prs_uint8s(False, "", &p->in_data.data, 0, (unsigned char *)data, (uint32)data_len);