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 /* this has to be done as root in order to verify the password */
619 status = auth_ntlmssp_update(a, *p_resp_blob, &reply);
622 /* Don't generate a reply. */
623 data_blob_free(&reply);
625 if (!NT_STATUS_IS_OK(status)) {
629 /* Finally - if the pipe negotiated integrity (sign) or privacy (seal)
630 ensure the underlying NTLMSSP flags are also set. If not we should
633 if (p->auth.auth_level == PIPE_AUTH_LEVEL_INTEGRITY) {
634 if (!(a->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN)) {
635 DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet integrity requested "
636 "but client declined signing.\n",
641 if (p->auth.auth_level == PIPE_AUTH_LEVEL_PRIVACY) {
642 if (!(a->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL)) {
643 DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet privacy requested "
644 "but client declined sealing.\n",
650 DEBUG(5, ("pipe_ntlmssp_verify_final: OK: user: %s domain: %s "
651 "workstation: %s\n", a->ntlmssp_state->user,
652 a->ntlmssp_state->domain, a->ntlmssp_state->workstation));
654 if (a->server_info->ptok == NULL) {
655 DEBUG(1,("Error: Authmodule failed to provide nt_user_token\n"));
659 TALLOC_FREE(p->server_info);
661 p->server_info = copy_serverinfo(p, a->server_info);
662 if (p->server_info == NULL) {
663 DEBUG(0, ("copy_serverinfo failed\n"));
668 * We're an authenticated bind over smb, so the session key needs to
669 * be set to "SystemLibraryDTC". Weird, but this is what Windows
670 * does. See the RPC-SAMBA3SESSIONKEY.
673 session_key = generic_session_key();
674 if (session_key.data == NULL) {
678 ret = server_info_set_session_key(p->server_info, session_key);
680 data_blob_free(&session_key);
685 /*******************************************************************
686 The switch table for the pipe names and the functions to handle them.
687 *******************************************************************/
694 struct ndr_syntax_id rpc_interface;
695 const struct api_struct *cmds;
699 static struct rpc_table *rpc_lookup;
700 static int rpc_lookup_size;
702 /*******************************************************************
703 This is the "stage3" NTLMSSP response after a bind request and reply.
704 *******************************************************************/
706 bool api_pipe_bind_auth3(pipes_struct *p, prs_struct *rpc_in_p)
708 RPC_HDR_AUTH auth_info;
714 DEBUG(5,("api_pipe_bind_auth3: decode request. %d\n", __LINE__));
716 if (p->hdr.auth_len == 0) {
717 DEBUG(0,("api_pipe_bind_auth3: No auth field sent !\n"));
721 /* 4 bytes padding. */
722 if (!prs_uint32("pad", rpc_in_p, 0, &pad)) {
723 DEBUG(0,("api_pipe_bind_auth3: unmarshall of 4 byte pad failed.\n"));
728 * Decode the authentication verifier response.
731 if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
732 DEBUG(0,("api_pipe_bind_auth3: unmarshall of RPC_HDR_AUTH failed.\n"));
736 if (auth_info.auth_type != RPC_NTLMSSP_AUTH_TYPE) {
737 DEBUG(0,("api_pipe_bind_auth3: incorrect auth type (%u).\n",
738 (unsigned int)auth_info.auth_type ));
742 blob = data_blob(NULL,p->hdr.auth_len);
744 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
745 DEBUG(0,("api_pipe_bind_auth3: Failed to pull %u bytes - the response blob.\n",
746 (unsigned int)p->hdr.auth_len ));
751 * The following call actually checks the challenge/response data.
752 * for correctness against the given DOMAIN\user name.
755 if (!pipe_ntlmssp_verify_final(p, &blob)) {
759 data_blob_free(&blob);
761 p->pipe_bound = True;
767 data_blob_free(&blob);
768 free_pipe_ntlmssp_auth_data(&p->auth);
769 p->auth.a_u.auth_ntlmssp_state = NULL;
774 /*******************************************************************
775 Marshall a bind_nak pdu.
776 *******************************************************************/
778 static bool setup_bind_nak(pipes_struct *p)
780 prs_struct outgoing_rpc;
784 /* Free any memory in the current return data buffer. */
785 prs_mem_free(&p->out_data.rdata);
788 * Marshall directly into the outgoing PDU space. We
789 * must do this as we need to set to the bind response
790 * header and are never sending more than one PDU here.
793 prs_init_empty( &outgoing_rpc, p->mem_ctx, MARSHALL);
794 prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
797 * Initialize a bind_nak header.
800 init_rpc_hdr(&nak_hdr, RPC_BINDNACK, RPC_FLG_FIRST | RPC_FLG_LAST,
801 p->hdr.call_id, RPC_HEADER_LEN + sizeof(uint16), 0);
804 * Marshall the header into the outgoing PDU.
807 if(!smb_io_rpc_hdr("", &nak_hdr, &outgoing_rpc, 0)) {
808 DEBUG(0,("setup_bind_nak: marshalling of RPC_HDR failed.\n"));
809 prs_mem_free(&outgoing_rpc);
814 * Now add the reject reason.
817 if(!prs_uint16("reject code", &outgoing_rpc, 0, &zero)) {
818 prs_mem_free(&outgoing_rpc);
822 p->out_data.data_sent_length = 0;
823 p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
824 p->out_data.current_pdu_sent = 0;
826 if (p->auth.auth_data_free_func) {
827 (*p->auth.auth_data_free_func)(&p->auth);
829 p->auth.auth_level = PIPE_AUTH_LEVEL_NONE;
830 p->auth.auth_type = PIPE_AUTH_TYPE_NONE;
831 p->pipe_bound = False;
836 /*******************************************************************
837 Marshall a fault pdu.
838 *******************************************************************/
840 bool setup_fault_pdu(pipes_struct *p, NTSTATUS status)
842 prs_struct outgoing_pdu;
844 RPC_HDR_RESP hdr_resp;
845 RPC_HDR_FAULT fault_resp;
847 /* Free any memory in the current return data buffer. */
848 prs_mem_free(&p->out_data.rdata);
851 * Marshall directly into the outgoing PDU space. We
852 * must do this as we need to set to the bind response
853 * header and are never sending more than one PDU here.
856 prs_init_empty( &outgoing_pdu, p->mem_ctx, MARSHALL);
857 prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
860 * Initialize a fault header.
863 init_rpc_hdr(&fault_hdr, RPC_FAULT, RPC_FLG_FIRST | RPC_FLG_LAST | RPC_FLG_NOCALL,
864 p->hdr.call_id, RPC_HEADER_LEN + RPC_HDR_RESP_LEN + RPC_HDR_FAULT_LEN, 0);
867 * Initialize the HDR_RESP and FAULT parts of the PDU.
870 memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
872 fault_resp.status = status;
873 fault_resp.reserved = 0;
876 * Marshall the header into the outgoing PDU.
879 if(!smb_io_rpc_hdr("", &fault_hdr, &outgoing_pdu, 0)) {
880 DEBUG(0,("setup_fault_pdu: marshalling of RPC_HDR failed.\n"));
881 prs_mem_free(&outgoing_pdu);
885 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &outgoing_pdu, 0)) {
886 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_RESP.\n"));
887 prs_mem_free(&outgoing_pdu);
891 if(!smb_io_rpc_hdr_fault("fault", &fault_resp, &outgoing_pdu, 0)) {
892 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_FAULT.\n"));
893 prs_mem_free(&outgoing_pdu);
897 p->out_data.data_sent_length = 0;
898 p->out_data.current_pdu_len = prs_offset(&outgoing_pdu);
899 p->out_data.current_pdu_sent = 0;
901 prs_mem_free(&outgoing_pdu);
906 /*******************************************************************
907 Marshall a cancel_ack pdu.
908 We should probably check the auth-verifier here.
909 *******************************************************************/
911 bool setup_cancel_ack_reply(pipes_struct *p, prs_struct *rpc_in_p)
913 prs_struct outgoing_pdu;
914 RPC_HDR ack_reply_hdr;
916 /* Free any memory in the current return data buffer. */
917 prs_mem_free(&p->out_data.rdata);
920 * Marshall directly into the outgoing PDU space. We
921 * must do this as we need to set to the bind response
922 * header and are never sending more than one PDU here.
925 prs_init_empty( &outgoing_pdu, p->mem_ctx, MARSHALL);
926 prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
929 * Initialize a cancel_ack header.
932 init_rpc_hdr(&ack_reply_hdr, RPC_CANCEL_ACK, RPC_FLG_FIRST | RPC_FLG_LAST,
933 p->hdr.call_id, RPC_HEADER_LEN, 0);
936 * Marshall the header into the outgoing PDU.
939 if(!smb_io_rpc_hdr("", &ack_reply_hdr, &outgoing_pdu, 0)) {
940 DEBUG(0,("setup_cancel_ack_reply: marshalling of RPC_HDR failed.\n"));
941 prs_mem_free(&outgoing_pdu);
945 p->out_data.data_sent_length = 0;
946 p->out_data.current_pdu_len = prs_offset(&outgoing_pdu);
947 p->out_data.current_pdu_sent = 0;
949 prs_mem_free(&outgoing_pdu);
954 /*******************************************************************
955 Ensure a bind request has the correct abstract & transfer interface.
956 Used to reject unknown binds from Win2k.
957 *******************************************************************/
959 bool check_bind_req(struct pipes_struct *p, RPC_IFACE* abstract,
960 RPC_IFACE* transfer, uint32 context_id)
963 struct pipe_rpc_fns *context_fns;
965 DEBUG(3,("check_bind_req for %s\n", p->name));
967 /* we have to check all now since win2k introduced a new UUID on the lsaprpc pipe */
969 for (i=0; i<rpc_lookup_size; i++) {
970 DEBUGADD(10, ("checking %s\n", rpc_lookup[i].pipe.clnt));
971 if (strequal(rpc_lookup[i].pipe.clnt, p->name)
972 && ndr_syntax_id_equal(
973 abstract, &rpc_lookup[i].rpc_interface)
974 && ndr_syntax_id_equal(
975 transfer, &ndr_transfer_syntax)) {
980 if (i == rpc_lookup_size) {
984 context_fns = SMB_MALLOC_P(struct pipe_rpc_fns);
985 if (context_fns == NULL) {
986 DEBUG(0,("check_bind_req: malloc() failed!\n"));
990 context_fns->cmds = rpc_lookup[i].cmds;
991 context_fns->n_cmds = rpc_lookup[i].n_cmds;
992 context_fns->context_id = context_id;
994 /* add to the list of open contexts */
996 DLIST_ADD( p->contexts, context_fns );
1001 /*******************************************************************
1002 Register commands to an RPC pipe
1003 *******************************************************************/
1005 NTSTATUS rpc_srv_register(int version, const char *clnt, const char *srv,
1006 const struct ndr_interface_table *iface,
1007 const struct api_struct *cmds, int size)
1009 struct rpc_table *rpc_entry;
1011 if (!clnt || !srv || !cmds) {
1012 return NT_STATUS_INVALID_PARAMETER;
1015 if (version != SMB_RPC_INTERFACE_VERSION) {
1016 DEBUG(0,("Can't register rpc commands!\n"
1017 "You tried to register a rpc module with SMB_RPC_INTERFACE_VERSION %d"
1018 ", while this version of samba uses version %d!\n",
1019 version,SMB_RPC_INTERFACE_VERSION));
1020 return NT_STATUS_OBJECT_TYPE_MISMATCH;
1025 * we still need to make sure that don't register the same commands twice!!!
1030 /* We use a temporary variable because this call can fail and
1031 rpc_lookup will still be valid afterwards. It could then succeed if
1032 called again later */
1034 rpc_entry = SMB_REALLOC_ARRAY_KEEP_OLD_ON_ERROR(rpc_lookup, struct rpc_table, rpc_lookup_size);
1035 if (NULL == rpc_entry) {
1037 DEBUG(0, ("rpc_pipe_register_commands: memory allocation failed\n"));
1038 return NT_STATUS_NO_MEMORY;
1040 rpc_lookup = rpc_entry;
1043 rpc_entry = rpc_lookup + (rpc_lookup_size - 1);
1044 ZERO_STRUCTP(rpc_entry);
1045 rpc_entry->pipe.clnt = SMB_STRDUP(clnt);
1046 rpc_entry->pipe.srv = SMB_STRDUP(srv);
1047 rpc_entry->rpc_interface = iface->syntax_id;
1048 rpc_entry->cmds = cmds;
1049 rpc_entry->n_cmds = size;
1051 return NT_STATUS_OK;
1055 * Is a named pipe known?
1056 * @param[in] cli_filename The pipe name requested by the client
1057 * @result Do we want to serve this?
1059 bool is_known_pipename(const char *cli_filename)
1061 const char *pipename = cli_filename;
1064 if (strnequal(pipename, "\\PIPE\\", 6)) {
1068 if (*pipename == '\\') {
1072 if (lp_disable_spoolss() && strequal(pipename, "spoolss")) {
1073 DEBUG(10, ("refusing spoolss access\n"));
1077 for (i=0; i<rpc_lookup_size; i++) {
1078 if (strequal(pipename, rpc_lookup[i].pipe.clnt)) {
1083 DEBUG(10, ("is_known_pipename: %s unknown\n", cli_filename));
1087 /*******************************************************************
1088 Handle a SPNEGO krb5 bind auth.
1089 *******************************************************************/
1091 static bool pipe_spnego_auth_bind_kerberos(pipes_struct *p, prs_struct *rpc_in_p, RPC_HDR_AUTH *pauth_info,
1092 DATA_BLOB *psecblob, prs_struct *pout_auth)
1097 /*******************************************************************
1098 Handle the first part of a SPNEGO bind auth.
1099 *******************************************************************/
1101 static bool pipe_spnego_auth_bind_negotiate(pipes_struct *p, prs_struct *rpc_in_p,
1102 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1108 char *OIDs[ASN1_MAX_OIDS];
1111 bool got_kerberos_mechanism = false;
1112 AUTH_NTLMSSP_STATE *a = NULL;
1113 RPC_HDR_AUTH auth_info;
1115 ZERO_STRUCT(secblob);
1117 ZERO_STRUCT(response);
1119 /* Grab the SPNEGO blob. */
1120 blob = data_blob(NULL,p->hdr.auth_len);
1122 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
1123 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to pull %u bytes - the SPNEGO auth header.\n",
1124 (unsigned int)p->hdr.auth_len ));
1128 if (blob.data[0] != ASN1_APPLICATION(0)) {
1132 /* parse out the OIDs and the first sec blob */
1133 if (!parse_negTokenTarg(blob, OIDs, &secblob)) {
1134 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to parse the security blob.\n"));
1138 if (strcmp(OID_KERBEROS5, OIDs[0]) == 0 || strcmp(OID_KERBEROS5_OLD, OIDs[0]) == 0) {
1139 got_kerberos_mechanism = true;
1142 for (i=0;OIDs[i];i++) {
1143 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got OID %s\n", OIDs[i]));
1144 TALLOC_FREE(OIDs[i]);
1146 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got secblob of size %lu\n", (unsigned long)secblob.length));
1148 if ( got_kerberos_mechanism && ((lp_security()==SEC_ADS) || lp_use_kerberos_keytab()) ) {
1149 bool ret = pipe_spnego_auth_bind_kerberos(p, rpc_in_p, pauth_info, &secblob, pout_auth);
1150 data_blob_free(&secblob);
1151 data_blob_free(&blob);
1155 if (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP && p->auth.a_u.auth_ntlmssp_state) {
1156 /* Free any previous auth type. */
1157 free_pipe_ntlmssp_auth_data(&p->auth);
1160 if (!got_kerberos_mechanism) {
1161 /* Initialize the NTLM engine. */
1162 status = auth_ntlmssp_start(&a);
1163 if (!NT_STATUS_IS_OK(status)) {
1168 * Pass the first security blob of data to it.
1169 * This can return an error or NT_STATUS_MORE_PROCESSING_REQUIRED
1170 * which means we need another packet to complete the bind.
1173 status = auth_ntlmssp_update(a, secblob, &chal);
1175 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1176 DEBUG(3,("pipe_spnego_auth_bind_negotiate: auth_ntlmssp_update failed.\n"));
1180 /* Generate the response blob we need for step 2 of the bind. */
1181 response = spnego_gen_auth_response(&chal, status, OID_NTLMSSP);
1184 * SPNEGO negotiate down to NTLMSSP. The subsequent
1185 * code to process follow-up packets is not complete
1188 response = spnego_gen_auth_response(NULL,
1189 NT_STATUS_MORE_PROCESSING_REQUIRED,
1193 /* Copy the blob into the pout_auth parse struct */
1194 init_rpc_hdr_auth(&auth_info, RPC_SPNEGO_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1195 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1196 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of RPC_HDR_AUTH failed.\n"));
1200 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1201 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of data blob failed.\n"));
1205 p->auth.a_u.auth_ntlmssp_state = a;
1206 p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
1207 p->auth.auth_type = PIPE_AUTH_TYPE_SPNEGO_NTLMSSP;
1209 data_blob_free(&blob);
1210 data_blob_free(&secblob);
1211 data_blob_free(&chal);
1212 data_blob_free(&response);
1214 /* We can't set pipe_bound True yet - we need an RPC_ALTER_CONTEXT response packet... */
1219 data_blob_free(&blob);
1220 data_blob_free(&secblob);
1221 data_blob_free(&chal);
1222 data_blob_free(&response);
1224 p->auth.a_u.auth_ntlmssp_state = NULL;
1229 /*******************************************************************
1230 Handle the second part of a SPNEGO bind auth.
1231 *******************************************************************/
1233 static bool pipe_spnego_auth_bind_continue(pipes_struct *p, prs_struct *rpc_in_p,
1234 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1236 RPC_HDR_AUTH auth_info;
1237 DATA_BLOB spnego_blob;
1238 DATA_BLOB auth_blob;
1239 DATA_BLOB auth_reply;
1241 AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
1243 ZERO_STRUCT(spnego_blob);
1244 ZERO_STRUCT(auth_blob);
1245 ZERO_STRUCT(auth_reply);
1246 ZERO_STRUCT(response);
1249 * NB. If we've negotiated down from krb5 to NTLMSSP we'll currently
1250 * fail here as 'a' == NULL.
1252 if (p->auth.auth_type != PIPE_AUTH_TYPE_SPNEGO_NTLMSSP || !a) {
1253 DEBUG(0,("pipe_spnego_auth_bind_continue: not in NTLMSSP auth state.\n"));
1257 /* Grab the SPNEGO blob. */
1258 spnego_blob = data_blob(NULL,p->hdr.auth_len);
1260 if (!prs_copy_data_out((char *)spnego_blob.data, rpc_in_p, p->hdr.auth_len)) {
1261 DEBUG(0,("pipe_spnego_auth_bind_continue: Failed to pull %u bytes - the SPNEGO auth header.\n",
1262 (unsigned int)p->hdr.auth_len ));
1266 if (spnego_blob.data[0] != ASN1_CONTEXT(1)) {
1267 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob type.\n"));
1271 if (!spnego_parse_auth(spnego_blob, &auth_blob)) {
1272 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob.\n"));
1277 * The following call actually checks the challenge/response data.
1278 * for correctness against the given DOMAIN\user name.
1281 if (!pipe_ntlmssp_verify_final(p, &auth_blob)) {
1285 data_blob_free(&spnego_blob);
1286 data_blob_free(&auth_blob);
1288 /* Generate the spnego "accept completed" blob - no incoming data. */
1289 response = spnego_gen_auth_response(&auth_reply, NT_STATUS_OK, OID_NTLMSSP);
1291 /* Copy the blob into the pout_auth parse struct */
1292 init_rpc_hdr_auth(&auth_info, RPC_SPNEGO_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1293 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1294 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of RPC_HDR_AUTH failed.\n"));
1298 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1299 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of data blob failed.\n"));
1303 data_blob_free(&auth_reply);
1304 data_blob_free(&response);
1306 p->pipe_bound = True;
1312 data_blob_free(&spnego_blob);
1313 data_blob_free(&auth_blob);
1314 data_blob_free(&auth_reply);
1315 data_blob_free(&response);
1317 free_pipe_ntlmssp_auth_data(&p->auth);
1318 p->auth.a_u.auth_ntlmssp_state = NULL;
1323 /*******************************************************************
1324 Handle an schannel bind auth.
1325 *******************************************************************/
1327 static bool pipe_schannel_auth_bind(pipes_struct *p, prs_struct *rpc_in_p,
1328 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1330 RPC_HDR_AUTH auth_info;
1331 RPC_AUTH_SCHANNEL_NEG neg;
1332 RPC_AUTH_VERIFIER auth_verifier;
1334 struct dcinfo *pdcinfo;
1336 DATA_BLOB session_key;
1338 if (!smb_io_rpc_auth_schannel_neg("", &neg, rpc_in_p, 0)) {
1339 DEBUG(0,("pipe_schannel_auth_bind: Could not unmarshal SCHANNEL auth neg\n"));
1344 * The neg.myname key here must match the remote computer name
1345 * given in the DOM_CLNT_SRV.uni_comp_name used on all netlogon pipe
1346 * operations that use credentials.
1350 ret = secrets_restore_schannel_session_info(p->mem_ctx, neg.myname, &pdcinfo);
1354 DEBUG(0, ("pipe_schannel_auth_bind: Attempt to bind using schannel without successful serverauth2\n"));
1358 p->auth.a_u.schannel_auth = talloc(p, struct schannel_auth_struct);
1359 if (!p->auth.a_u.schannel_auth) {
1360 TALLOC_FREE(pdcinfo);
1364 memset(p->auth.a_u.schannel_auth->sess_key, 0, sizeof(p->auth.a_u.schannel_auth->sess_key));
1365 memcpy(p->auth.a_u.schannel_auth->sess_key, pdcinfo->sess_key,
1366 sizeof(pdcinfo->sess_key));
1368 TALLOC_FREE(pdcinfo);
1370 p->auth.a_u.schannel_auth->seq_num = 0;
1373 * JRA. Should we also copy the schannel session key into the pipe session key p->session_key
1374 * here ? We do that for NTLMSSP, but the session key is already set up from the vuser
1375 * struct of the person who opened the pipe. I need to test this further. JRA.
1377 * VL. As we are mapping this to guest set the generic key
1378 * "SystemLibraryDTC" key here. It's a bit difficult to test against
1379 * W2k3, as it does not allow schannel binds against SAMR and LSA
1383 session_key = generic_session_key();
1384 if (session_key.data == NULL) {
1385 DEBUG(0, ("pipe_schannel_auth_bind: Could not alloc session"
1390 ret = server_info_set_session_key(p->server_info, session_key);
1392 data_blob_free(&session_key);
1395 DEBUG(0, ("server_info_set_session_key failed\n"));
1399 init_rpc_hdr_auth(&auth_info, RPC_SCHANNEL_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1400 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1401 DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1405 /*** SCHANNEL verifier ***/
1407 init_rpc_auth_verifier(&auth_verifier, "\001", 0x0);
1408 if(!smb_io_rpc_schannel_verifier("", &auth_verifier, pout_auth, 0)) {
1409 DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_AUTH_VERIFIER failed.\n"));
1413 prs_align(pout_auth);
1416 if(!prs_uint32("flags ", pout_auth, 0, &flags)) {
1420 DEBUG(10,("pipe_schannel_auth_bind: schannel auth: domain [%s] myname [%s]\n",
1421 neg.domain, neg.myname));
1423 /* We're finished with this bind - no more packets. */
1424 p->auth.auth_data_free_func = NULL;
1425 p->auth.auth_type = PIPE_AUTH_TYPE_SCHANNEL;
1427 p->pipe_bound = True;
1432 /*******************************************************************
1433 Handle an NTLMSSP bind auth.
1434 *******************************************************************/
1436 static bool pipe_ntlmssp_auth_bind(pipes_struct *p, prs_struct *rpc_in_p,
1437 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1439 RPC_HDR_AUTH auth_info;
1443 AUTH_NTLMSSP_STATE *a = NULL;
1446 ZERO_STRUCT(response);
1448 /* Grab the NTLMSSP blob. */
1449 blob = data_blob(NULL,p->hdr.auth_len);
1451 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
1452 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to pull %u bytes - the NTLM auth header.\n",
1453 (unsigned int)p->hdr.auth_len ));
1457 if (strncmp((char *)blob.data, "NTLMSSP", 7) != 0) {
1458 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to read NTLMSSP in blob\n"));
1462 /* We have an NTLMSSP blob. */
1463 status = auth_ntlmssp_start(&a);
1464 if (!NT_STATUS_IS_OK(status)) {
1465 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_start failed: %s\n",
1466 nt_errstr(status) ));
1470 status = auth_ntlmssp_update(a, blob, &response);
1471 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1472 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_update failed: %s\n",
1473 nt_errstr(status) ));
1477 data_blob_free(&blob);
1479 /* Copy the blob into the pout_auth parse struct */
1480 init_rpc_hdr_auth(&auth_info, RPC_NTLMSSP_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1481 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1482 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1486 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1487 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of data blob failed.\n"));
1491 p->auth.a_u.auth_ntlmssp_state = a;
1492 p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
1493 p->auth.auth_type = PIPE_AUTH_TYPE_NTLMSSP;
1495 data_blob_free(&blob);
1496 data_blob_free(&response);
1498 DEBUG(10,("pipe_ntlmssp_auth_bind: NTLMSSP auth started\n"));
1500 /* We can't set pipe_bound True yet - we need an RPC_AUTH3 response packet... */
1505 data_blob_free(&blob);
1506 data_blob_free(&response);
1508 free_pipe_ntlmssp_auth_data(&p->auth);
1509 p->auth.a_u.auth_ntlmssp_state = NULL;
1513 /*******************************************************************
1514 Respond to a pipe bind request.
1515 *******************************************************************/
1517 bool api_pipe_bind_req(pipes_struct *p, prs_struct *rpc_in_p)
1521 RPC_HDR_AUTH auth_info;
1523 fstring ack_pipe_name;
1524 prs_struct out_hdr_ba;
1525 prs_struct out_auth;
1526 prs_struct outgoing_rpc;
1529 unsigned int auth_type = RPC_ANONYMOUS_AUTH_TYPE;
1531 /* No rebinds on a bound pipe - use alter context. */
1532 if (p->pipe_bound) {
1533 DEBUG(2,("api_pipe_bind_req: rejecting bind request on bound pipe %s.\n", p->pipe_srv_name));
1534 return setup_bind_nak(p);
1537 prs_init_empty( &outgoing_rpc, p->mem_ctx, MARSHALL);
1540 * Marshall directly into the outgoing PDU space. We
1541 * must do this as we need to set to the bind response
1542 * header and are never sending more than one PDU here.
1545 prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
1548 * Setup the memory to marshall the ba header, and the
1552 if(!prs_init(&out_hdr_ba, 1024, p->mem_ctx, MARSHALL)) {
1553 DEBUG(0,("api_pipe_bind_req: malloc out_hdr_ba failed.\n"));
1554 prs_mem_free(&outgoing_rpc);
1558 if(!prs_init(&out_auth, 1024, p->mem_ctx, MARSHALL)) {
1559 DEBUG(0,("api_pipe_bind_req: malloc out_auth failed.\n"));
1560 prs_mem_free(&outgoing_rpc);
1561 prs_mem_free(&out_hdr_ba);
1565 DEBUG(5,("api_pipe_bind_req: decode request. %d\n", __LINE__));
1567 ZERO_STRUCT(hdr_rb);
1569 /* decode the bind request */
1571 if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_in_p, 0)) {
1572 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_RB "
1577 if (hdr_rb.num_contexts == 0) {
1578 DEBUG(0, ("api_pipe_bind_req: no rpc contexts around\n"));
1583 * Try and find the correct pipe name to ensure
1584 * that this is a pipe name we support.
1587 for (i = 0; i < rpc_lookup_size; i++) {
1588 if (ndr_syntax_id_equal(&rpc_lookup[i].rpc_interface,
1589 &hdr_rb.rpc_context[0].abstract)) {
1590 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1591 rpc_lookup[i].pipe.clnt, rpc_lookup[i].pipe.srv));
1592 fstrcpy(p->name, rpc_lookup[i].pipe.clnt);
1593 fstrcpy(p->pipe_srv_name, rpc_lookup[i].pipe.srv);
1598 if (i == rpc_lookup_size) {
1599 if (NT_STATUS_IS_ERR(smb_probe_module("rpc", p->name))) {
1600 DEBUG(3,("api_pipe_bind_req: Unknown pipe name %s in bind request.\n",
1602 prs_mem_free(&outgoing_rpc);
1603 prs_mem_free(&out_hdr_ba);
1604 prs_mem_free(&out_auth);
1606 return setup_bind_nak(p);
1609 for (i = 0; i < rpc_lookup_size; i++) {
1610 if (strequal(rpc_lookup[i].pipe.clnt, p->name)) {
1611 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1612 rpc_lookup[i].pipe.clnt, rpc_lookup[i].pipe.srv));
1613 fstrcpy(p->pipe_srv_name, rpc_lookup[i].pipe.srv);
1618 if (i == rpc_lookup_size) {
1619 DEBUG(0, ("module %s doesn't provide functions for pipe %s!\n", p->name, p->name));
1624 /* name has to be \PIPE\xxxxx */
1625 fstrcpy(ack_pipe_name, "\\PIPE\\");
1626 fstrcat(ack_pipe_name, p->pipe_srv_name);
1628 DEBUG(5,("api_pipe_bind_req: make response. %d\n", __LINE__));
1631 * Check if this is an authenticated bind request.
1634 if (p->hdr.auth_len) {
1636 * Decode the authentication verifier.
1639 if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
1640 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1644 auth_type = auth_info.auth_type;
1646 /* Work out if we have to sign or seal etc. */
1647 switch (auth_info.auth_level) {
1648 case RPC_AUTH_LEVEL_INTEGRITY:
1649 p->auth.auth_level = PIPE_AUTH_LEVEL_INTEGRITY;
1651 case RPC_AUTH_LEVEL_PRIVACY:
1652 p->auth.auth_level = PIPE_AUTH_LEVEL_PRIVACY;
1655 DEBUG(0,("api_pipe_bind_req: unexpected auth level (%u).\n",
1656 (unsigned int)auth_info.auth_level ));
1660 ZERO_STRUCT(auth_info);
1663 assoc_gid = hdr_rb.bba.assoc_gid ? hdr_rb.bba.assoc_gid : 0x53f0;
1666 case RPC_NTLMSSP_AUTH_TYPE:
1667 if (!pipe_ntlmssp_auth_bind(p, rpc_in_p, &auth_info, &out_auth)) {
1673 case RPC_SCHANNEL_AUTH_TYPE:
1674 if (!pipe_schannel_auth_bind(p, rpc_in_p, &auth_info, &out_auth)) {
1679 case RPC_SPNEGO_AUTH_TYPE:
1680 if (!pipe_spnego_auth_bind_negotiate(p, rpc_in_p, &auth_info, &out_auth)) {
1685 case RPC_ANONYMOUS_AUTH_TYPE:
1686 /* Unauthenticated bind request. */
1687 /* We're finished - no more packets. */
1688 p->auth.auth_type = PIPE_AUTH_TYPE_NONE;
1689 /* We must set the pipe auth_level here also. */
1690 p->auth.auth_level = PIPE_AUTH_LEVEL_NONE;
1691 p->pipe_bound = True;
1692 /* The session key was initialized from the SMB
1693 * session in make_internal_rpc_pipe_p */
1697 DEBUG(0,("api_pipe_bind_req: unknown auth type %x requested.\n", auth_type ));
1702 * Create the bind response struct.
1705 /* If the requested abstract synt uuid doesn't match our client pipe,
1706 reject the bind_ack & set the transfer interface synt to all 0's,
1707 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1709 Needed when adding entries to a DACL from NT5 - SK */
1711 if(check_bind_req(p, &hdr_rb.rpc_context[0].abstract, &hdr_rb.rpc_context[0].transfer[0],
1712 hdr_rb.rpc_context[0].context_id )) {
1713 init_rpc_hdr_ba(&hdr_ba,
1714 RPC_MAX_PDU_FRAG_LEN,
1715 RPC_MAX_PDU_FRAG_LEN,
1719 &hdr_rb.rpc_context[0].transfer[0]);
1721 RPC_IFACE null_interface;
1722 ZERO_STRUCT(null_interface);
1723 /* Rejection reason: abstract syntax not supported */
1724 init_rpc_hdr_ba(&hdr_ba, RPC_MAX_PDU_FRAG_LEN,
1725 RPC_MAX_PDU_FRAG_LEN, assoc_gid,
1726 ack_pipe_name, 0x1, 0x2, 0x1,
1728 p->pipe_bound = False;
1735 if(!smb_io_rpc_hdr_ba("", &hdr_ba, &out_hdr_ba, 0)) {
1736 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR_BA failed.\n"));
1741 * Create the header, now we know the length.
1744 if (prs_offset(&out_auth)) {
1745 auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
1748 init_rpc_hdr(&p->hdr, RPC_BINDACK, RPC_FLG_FIRST | RPC_FLG_LAST,
1750 RPC_HEADER_LEN + prs_offset(&out_hdr_ba) + prs_offset(&out_auth),
1754 * Marshall the header into the outgoing PDU.
1757 if(!smb_io_rpc_hdr("", &p->hdr, &outgoing_rpc, 0)) {
1758 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR failed.\n"));
1763 * Now add the RPC_HDR_BA and any auth needed.
1766 if(!prs_append_prs_data( &outgoing_rpc, &out_hdr_ba)) {
1767 DEBUG(0,("api_pipe_bind_req: append of RPC_HDR_BA failed.\n"));
1771 if (auth_len && !prs_append_prs_data( &outgoing_rpc, &out_auth)) {
1772 DEBUG(0,("api_pipe_bind_req: append of auth info failed.\n"));
1777 * Setup the lengths for the initial reply.
1780 p->out_data.data_sent_length = 0;
1781 p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
1782 p->out_data.current_pdu_sent = 0;
1784 prs_mem_free(&out_hdr_ba);
1785 prs_mem_free(&out_auth);
1791 prs_mem_free(&outgoing_rpc);
1792 prs_mem_free(&out_hdr_ba);
1793 prs_mem_free(&out_auth);
1794 return setup_bind_nak(p);
1797 /****************************************************************************
1798 Deal with an alter context call. Can be third part of 3 leg auth request for
1800 ****************************************************************************/
1802 bool api_pipe_alter_context(pipes_struct *p, prs_struct *rpc_in_p)
1806 RPC_HDR_AUTH auth_info;
1808 fstring ack_pipe_name;
1809 prs_struct out_hdr_ba;
1810 prs_struct out_auth;
1811 prs_struct outgoing_rpc;
1814 prs_init_empty( &outgoing_rpc, p->mem_ctx, MARSHALL);
1817 * Marshall directly into the outgoing PDU space. We
1818 * must do this as we need to set to the bind response
1819 * header and are never sending more than one PDU here.
1822 prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
1825 * Setup the memory to marshall the ba header, and the
1829 if(!prs_init(&out_hdr_ba, 1024, p->mem_ctx, MARSHALL)) {
1830 DEBUG(0,("api_pipe_alter_context: malloc out_hdr_ba failed.\n"));
1831 prs_mem_free(&outgoing_rpc);
1835 if(!prs_init(&out_auth, 1024, p->mem_ctx, MARSHALL)) {
1836 DEBUG(0,("api_pipe_alter_context: malloc out_auth failed.\n"));
1837 prs_mem_free(&outgoing_rpc);
1838 prs_mem_free(&out_hdr_ba);
1842 ZERO_STRUCT(hdr_rb);
1844 DEBUG(5,("api_pipe_alter_context: decode request. %d\n", __LINE__));
1846 /* decode the alter context request */
1847 if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_in_p, 0)) {
1848 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_RB struct.\n"));
1852 /* secondary address CAN be NULL
1853 * as the specs say it's ignored.
1854 * It MUST be NULL to have the spoolss working.
1856 fstrcpy(ack_pipe_name,"");
1858 DEBUG(5,("api_pipe_alter_context: make response. %d\n", __LINE__));
1861 * Check if this is an authenticated alter context request.
1864 if (p->hdr.auth_len != 0) {
1866 * Decode the authentication verifier.
1869 if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
1870 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1875 * Currently only the SPNEGO auth type uses the alter ctx
1876 * response in place of the NTLMSSP auth3 type.
1879 if (auth_info.auth_type == RPC_SPNEGO_AUTH_TYPE) {
1880 /* We can only finish if the pipe is unbound. */
1881 if (!p->pipe_bound) {
1882 if (!pipe_spnego_auth_bind_continue(p, rpc_in_p, &auth_info, &out_auth)) {
1890 ZERO_STRUCT(auth_info);
1893 assoc_gid = hdr_rb.bba.assoc_gid ? hdr_rb.bba.assoc_gid : 0x53f0;
1896 * Create the bind response struct.
1899 /* If the requested abstract synt uuid doesn't match our client pipe,
1900 reject the bind_ack & set the transfer interface synt to all 0's,
1901 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1903 Needed when adding entries to a DACL from NT5 - SK */
1905 if(check_bind_req(p, &hdr_rb.rpc_context[0].abstract, &hdr_rb.rpc_context[0].transfer[0],
1906 hdr_rb.rpc_context[0].context_id )) {
1907 init_rpc_hdr_ba(&hdr_ba,
1908 RPC_MAX_PDU_FRAG_LEN,
1909 RPC_MAX_PDU_FRAG_LEN,
1913 &hdr_rb.rpc_context[0].transfer[0]);
1915 RPC_IFACE null_interface;
1916 ZERO_STRUCT(null_interface);
1917 /* Rejection reason: abstract syntax not supported */
1918 init_rpc_hdr_ba(&hdr_ba, RPC_MAX_PDU_FRAG_LEN,
1919 RPC_MAX_PDU_FRAG_LEN, assoc_gid,
1920 ack_pipe_name, 0x1, 0x2, 0x1,
1922 p->pipe_bound = False;
1929 if(!smb_io_rpc_hdr_ba("", &hdr_ba, &out_hdr_ba, 0)) {
1930 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR_BA failed.\n"));
1935 * Create the header, now we know the length.
1938 if (prs_offset(&out_auth)) {
1939 auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
1942 init_rpc_hdr(&p->hdr, RPC_ALTCONTRESP, RPC_FLG_FIRST | RPC_FLG_LAST,
1944 RPC_HEADER_LEN + prs_offset(&out_hdr_ba) + prs_offset(&out_auth),
1948 * Marshall the header into the outgoing PDU.
1951 if(!smb_io_rpc_hdr("", &p->hdr, &outgoing_rpc, 0)) {
1952 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR failed.\n"));
1957 * Now add the RPC_HDR_BA and any auth needed.
1960 if(!prs_append_prs_data( &outgoing_rpc, &out_hdr_ba)) {
1961 DEBUG(0,("api_pipe_alter_context: append of RPC_HDR_BA failed.\n"));
1965 if (auth_len && !prs_append_prs_data( &outgoing_rpc, &out_auth)) {
1966 DEBUG(0,("api_pipe_alter_context: append of auth info failed.\n"));
1971 * Setup the lengths for the initial reply.
1974 p->out_data.data_sent_length = 0;
1975 p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
1976 p->out_data.current_pdu_sent = 0;
1978 prs_mem_free(&out_hdr_ba);
1979 prs_mem_free(&out_auth);
1985 prs_mem_free(&outgoing_rpc);
1986 prs_mem_free(&out_hdr_ba);
1987 prs_mem_free(&out_auth);
1988 return setup_bind_nak(p);
1991 /****************************************************************************
1992 Deal with NTLMSSP sign & seal processing on an RPC request.
1993 ****************************************************************************/
1995 bool api_pipe_ntlmssp_auth_process(pipes_struct *p, prs_struct *rpc_in,
1996 uint32 *p_ss_padding_len, NTSTATUS *pstatus)
1998 RPC_HDR_AUTH auth_info;
1999 uint32 auth_len = p->hdr.auth_len;
2000 uint32 save_offset = prs_offset(rpc_in);
2001 AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
2002 unsigned char *data = NULL;
2004 unsigned char *full_packet_data = NULL;
2005 size_t full_packet_data_len;
2006 DATA_BLOB auth_blob;
2008 *pstatus = NT_STATUS_OK;
2010 if (p->auth.auth_level == PIPE_AUTH_LEVEL_NONE || p->auth.auth_level == PIPE_AUTH_LEVEL_CONNECT) {
2015 *pstatus = NT_STATUS_INVALID_PARAMETER;
2019 /* Ensure there's enough data for an authenticated request. */
2020 if ((auth_len > RPC_MAX_SIGN_SIZE) ||
2021 (RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_HDR_AUTH_LEN + auth_len > p->hdr.frag_len)) {
2022 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len %u is too large.\n",
2023 (unsigned int)auth_len ));
2024 *pstatus = NT_STATUS_INVALID_PARAMETER;
2029 * We need the full packet data + length (minus auth stuff) as well as the packet data + length
2030 * after the RPC header.
2031 * We need to pass in the full packet (minus auth len) to the NTLMSSP sign and check seal
2032 * functions as NTLMv2 checks the rpc headers also.
2035 data = (unsigned char *)(prs_data_p(rpc_in) + RPC_HDR_REQ_LEN);
2036 data_len = (size_t)(p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN - RPC_HDR_AUTH_LEN - auth_len);
2038 full_packet_data = p->in_data.current_in_pdu;
2039 full_packet_data_len = p->hdr.frag_len - auth_len;
2041 /* Pull the auth header and the following data into a blob. */
2042 if(!prs_set_offset(rpc_in, RPC_HDR_REQ_LEN + data_len)) {
2043 DEBUG(0,("api_pipe_ntlmssp_auth_process: cannot move offset to %u.\n",
2044 (unsigned int)RPC_HDR_REQ_LEN + (unsigned int)data_len ));
2045 *pstatus = NT_STATUS_INVALID_PARAMETER;
2049 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
2050 DEBUG(0,("api_pipe_ntlmssp_auth_process: failed to unmarshall RPC_HDR_AUTH.\n"));
2051 *pstatus = NT_STATUS_INVALID_PARAMETER;
2055 auth_blob.data = (unsigned char *)prs_data_p(rpc_in) + prs_offset(rpc_in);
2056 auth_blob.length = auth_len;
2058 switch (p->auth.auth_level) {
2059 case PIPE_AUTH_LEVEL_PRIVACY:
2060 /* Data is encrypted. */
2061 *pstatus = ntlmssp_unseal_packet(a->ntlmssp_state,
2064 full_packet_data_len,
2066 if (!NT_STATUS_IS_OK(*pstatus)) {
2070 case PIPE_AUTH_LEVEL_INTEGRITY:
2071 /* Data is signed. */
2072 *pstatus = ntlmssp_check_packet(a->ntlmssp_state,
2075 full_packet_data_len,
2077 if (!NT_STATUS_IS_OK(*pstatus)) {
2082 *pstatus = NT_STATUS_INVALID_PARAMETER;
2087 * Return the current pointer to the data offset.
2090 if(!prs_set_offset(rpc_in, save_offset)) {
2091 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
2092 (unsigned int)save_offset ));
2093 *pstatus = NT_STATUS_INVALID_PARAMETER;
2098 * Remember the padding length. We must remove it from the real data
2099 * stream once the sign/seal is done.
2102 *p_ss_padding_len = auth_info.auth_pad_len;
2107 /****************************************************************************
2108 Deal with schannel processing on an RPC request.
2109 ****************************************************************************/
2111 bool api_pipe_schannel_process(pipes_struct *p, prs_struct *rpc_in, uint32 *p_ss_padding_len)
2115 uint32 save_offset = prs_offset(rpc_in);
2116 RPC_HDR_AUTH auth_info;
2117 RPC_AUTH_SCHANNEL_CHK schannel_chk;
2119 auth_len = p->hdr.auth_len;
2121 if (auth_len != RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN) {
2122 DEBUG(0,("Incorrect auth_len %u.\n", (unsigned int)auth_len ));
2127 * The following is that length of the data we must verify or unseal.
2128 * This doesn't include the RPC headers or the auth_len or the RPC_HDR_AUTH_LEN
2129 * preceeding the auth_data.
2132 if (p->hdr.frag_len < RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_HDR_AUTH_LEN + auth_len) {
2133 DEBUG(0,("Incorrect frag %u, auth %u.\n",
2134 (unsigned int)p->hdr.frag_len,
2135 (unsigned int)auth_len ));
2139 data_len = p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN -
2140 RPC_HDR_AUTH_LEN - auth_len;
2142 DEBUG(5,("data %d auth %d\n", data_len, auth_len));
2144 if(!prs_set_offset(rpc_in, RPC_HDR_REQ_LEN + data_len)) {
2145 DEBUG(0,("cannot move offset to %u.\n",
2146 (unsigned int)RPC_HDR_REQ_LEN + data_len ));
2150 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
2151 DEBUG(0,("failed to unmarshall RPC_HDR_AUTH.\n"));
2155 if (auth_info.auth_type != RPC_SCHANNEL_AUTH_TYPE) {
2156 DEBUG(0,("Invalid auth info %d on schannel\n",
2157 auth_info.auth_type));
2161 if(!smb_io_rpc_auth_schannel_chk("", RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN, &schannel_chk, rpc_in, 0)) {
2162 DEBUG(0,("failed to unmarshal RPC_AUTH_SCHANNEL_CHK.\n"));
2166 if (!schannel_decode(p->auth.a_u.schannel_auth,
2168 SENDER_IS_INITIATOR,
2170 prs_data_p(rpc_in)+RPC_HDR_REQ_LEN, data_len)) {
2171 DEBUG(3,("failed to decode PDU\n"));
2176 * Return the current pointer to the data offset.
2179 if(!prs_set_offset(rpc_in, save_offset)) {
2180 DEBUG(0,("failed to set offset back to %u\n",
2181 (unsigned int)save_offset ));
2185 /* The sequence number gets incremented on both send and receive. */
2186 p->auth.a_u.schannel_auth->seq_num++;
2189 * Remember the padding length. We must remove it from the real data
2190 * stream once the sign/seal is done.
2193 *p_ss_padding_len = auth_info.auth_pad_len;
2198 /****************************************************************************
2199 Find the set of RPC functions associated with this context_id
2200 ****************************************************************************/
2202 static PIPE_RPC_FNS* find_pipe_fns_by_context( PIPE_RPC_FNS *list, uint32 context_id )
2204 PIPE_RPC_FNS *fns = NULL;
2207 DEBUG(0,("find_pipe_fns_by_context: ERROR! No context list for pipe!\n"));
2211 for (fns=list; fns; fns=fns->next ) {
2212 if ( fns->context_id == context_id )
2218 /****************************************************************************
2220 ****************************************************************************/
2222 void free_pipe_rpc_context( PIPE_RPC_FNS *list )
2224 PIPE_RPC_FNS *tmp = list;
2236 static bool api_rpcTNP(pipes_struct *p, const char *rpc_name,
2237 const struct api_struct *api_rpc_cmds, int n_cmds);
2239 /****************************************************************************
2240 Find the correct RPC function to call for this request.
2241 If the pipe is authenticated then become the correct UNIX user
2242 before doing the call.
2243 ****************************************************************************/
2245 bool api_pipe_request(pipes_struct *p)
2248 bool changed_user = False;
2249 PIPE_RPC_FNS *pipe_fns;
2251 if (p->pipe_bound &&
2252 ((p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP) ||
2253 (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP))) {
2254 if(!become_authenticated_pipe_user(p)) {
2255 prs_mem_free(&p->out_data.rdata);
2258 changed_user = True;
2261 DEBUG(5, ("Requested \\PIPE\\%s\n", p->name));
2263 /* get the set of RPC functions for this context */
2265 pipe_fns = find_pipe_fns_by_context(p->contexts, p->hdr_req.context_id);
2268 TALLOC_CTX *frame = talloc_stackframe();
2269 ret = api_rpcTNP(p, p->name, pipe_fns->cmds, pipe_fns->n_cmds);
2273 DEBUG(0,("api_pipe_request: No rpc function table associated with context [%d] on pipe [%s]\n",
2274 p->hdr_req.context_id, p->name));
2278 unbecome_authenticated_pipe_user();
2284 /*******************************************************************
2285 Calls the underlying RPC function for a named pipe.
2286 ********************************************************************/
2288 static bool api_rpcTNP(pipes_struct *p, const char *rpc_name,
2289 const struct api_struct *api_rpc_cmds, int n_cmds)
2293 uint32 offset1, offset2;
2295 /* interpret the command */
2296 DEBUG(4,("api_rpcTNP: %s op 0x%x - ", rpc_name, p->hdr_req.opnum));
2298 slprintf(name, sizeof(name)-1, "in_%s", rpc_name);
2299 prs_dump(name, p->hdr_req.opnum, &p->in_data.data);
2301 for (fn_num = 0; fn_num < n_cmds; fn_num++) {
2302 if (api_rpc_cmds[fn_num].opnum == p->hdr_req.opnum && api_rpc_cmds[fn_num].fn != NULL) {
2303 DEBUG(3,("api_rpcTNP: rpc command: %s\n", api_rpc_cmds[fn_num].name));
2308 if (fn_num == n_cmds) {
2310 * For an unknown RPC just return a fault PDU but
2311 * return True to allow RPC's on the pipe to continue
2312 * and not put the pipe into fault state. JRA.
2314 DEBUG(4, ("unknown\n"));
2315 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
2319 offset1 = prs_offset(&p->out_data.rdata);
2321 DEBUG(6, ("api_rpc_cmds[%d].fn == %p\n",
2322 fn_num, api_rpc_cmds[fn_num].fn));
2323 /* do the actual command */
2324 if(!api_rpc_cmds[fn_num].fn(p)) {
2325 DEBUG(0,("api_rpcTNP: %s: %s failed.\n", rpc_name, api_rpc_cmds[fn_num].name));
2326 prs_mem_free(&p->out_data.rdata);
2330 if (p->bad_handle_fault_state) {
2331 DEBUG(4,("api_rpcTNP: bad handle fault return.\n"));
2332 p->bad_handle_fault_state = False;
2333 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_CONTEXT_MISMATCH));
2337 if (p->rng_fault_state) {
2338 DEBUG(4, ("api_rpcTNP: rng fault return\n"));
2339 p->rng_fault_state = False;
2340 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
2344 slprintf(name, sizeof(name)-1, "out_%s", rpc_name);
2345 offset2 = prs_offset(&p->out_data.rdata);
2346 prs_set_offset(&p->out_data.rdata, offset1);
2347 prs_dump(name, p->hdr_req.opnum, &p->out_data.rdata);
2348 prs_set_offset(&p->out_data.rdata, offset2);
2350 DEBUG(5,("api_rpcTNP: called %s successfully\n", rpc_name));
2352 /* Check for buffer underflow in rpc parsing */
2354 if ((DEBUGLEVEL >= 10) &&
2355 (prs_offset(&p->in_data.data) != prs_data_size(&p->in_data.data))) {
2356 size_t data_len = prs_data_size(&p->in_data.data) - prs_offset(&p->in_data.data);
2357 char *data = (char *)SMB_MALLOC(data_len);
2359 DEBUG(10, ("api_rpcTNP: rpc input buffer underflow (parse error?)\n"));
2361 prs_uint8s(False, "", &p->in_data.data, 0, (unsigned char *)data, (uint32)data_len);