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_pipe_register_commands(int version, const char *clnt,
1007 const struct ndr_syntax_id *interface,
1008 const struct api_struct *cmds, int size)
1010 struct rpc_table *rpc_entry;
1012 if (!clnt || !srv || !cmds) {
1013 return NT_STATUS_INVALID_PARAMETER;
1016 if (version != SMB_RPC_INTERFACE_VERSION) {
1017 DEBUG(0,("Can't register rpc commands!\n"
1018 "You tried to register a rpc module with SMB_RPC_INTERFACE_VERSION %d"
1019 ", while this version of samba uses version %d!\n",
1020 version,SMB_RPC_INTERFACE_VERSION));
1021 return NT_STATUS_OBJECT_TYPE_MISMATCH;
1026 * we still need to make sure that don't register the same commands twice!!!
1031 /* We use a temporary variable because this call can fail and
1032 rpc_lookup will still be valid afterwards. It could then succeed if
1033 called again later */
1035 rpc_entry = SMB_REALLOC_ARRAY_KEEP_OLD_ON_ERROR(rpc_lookup, struct rpc_table, rpc_lookup_size);
1036 if (NULL == rpc_entry) {
1038 DEBUG(0, ("rpc_pipe_register_commands: memory allocation failed\n"));
1039 return NT_STATUS_NO_MEMORY;
1041 rpc_lookup = rpc_entry;
1044 rpc_entry = rpc_lookup + (rpc_lookup_size - 1);
1045 ZERO_STRUCTP(rpc_entry);
1046 rpc_entry->pipe.clnt = SMB_STRDUP(clnt);
1047 rpc_entry->pipe.srv = SMB_STRDUP(srv);
1048 rpc_entry->rpc_interface = *interface;
1049 rpc_entry->cmds = cmds;
1050 rpc_entry->n_cmds = size;
1052 return NT_STATUS_OK;
1056 * Is a named pipe known?
1057 * @param[in] cli_filename The pipe name requested by the client
1058 * @result Do we want to serve this?
1060 bool is_known_pipename(const char *cli_filename)
1062 const char *pipename = cli_filename;
1065 if (strnequal(pipename, "\\PIPE\\", 6)) {
1069 if (*pipename == '\\') {
1073 if (lp_disable_spoolss() && strequal(pipename, "spoolss")) {
1074 DEBUG(10, ("refusing spoolss access\n"));
1078 for (i=0; i<rpc_lookup_size; i++) {
1079 if (strequal(pipename, rpc_lookup[i].pipe.clnt)) {
1084 DEBUG(10, ("is_known_pipename: %s unknown\n", cli_filename));
1088 /*******************************************************************
1089 Handle a SPNEGO krb5 bind auth.
1090 *******************************************************************/
1092 static bool pipe_spnego_auth_bind_kerberos(pipes_struct *p, prs_struct *rpc_in_p, RPC_HDR_AUTH *pauth_info,
1093 DATA_BLOB *psecblob, prs_struct *pout_auth)
1098 /*******************************************************************
1099 Handle the first part of a SPNEGO bind auth.
1100 *******************************************************************/
1102 static bool pipe_spnego_auth_bind_negotiate(pipes_struct *p, prs_struct *rpc_in_p,
1103 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1109 char *OIDs[ASN1_MAX_OIDS];
1112 bool got_kerberos_mechanism = false;
1113 AUTH_NTLMSSP_STATE *a = NULL;
1114 RPC_HDR_AUTH auth_info;
1116 ZERO_STRUCT(secblob);
1118 ZERO_STRUCT(response);
1120 /* Grab the SPNEGO blob. */
1121 blob = data_blob(NULL,p->hdr.auth_len);
1123 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
1124 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to pull %u bytes - the SPNEGO auth header.\n",
1125 (unsigned int)p->hdr.auth_len ));
1129 if (blob.data[0] != ASN1_APPLICATION(0)) {
1133 /* parse out the OIDs and the first sec blob */
1134 if (!parse_negTokenTarg(blob, OIDs, &secblob)) {
1135 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to parse the security blob.\n"));
1139 if (strcmp(OID_KERBEROS5, OIDs[0]) == 0 || strcmp(OID_KERBEROS5_OLD, OIDs[0]) == 0) {
1140 got_kerberos_mechanism = true;
1143 for (i=0;OIDs[i];i++) {
1144 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got OID %s\n", OIDs[i]));
1145 TALLOC_FREE(OIDs[i]);
1147 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got secblob of size %lu\n", (unsigned long)secblob.length));
1149 if ( got_kerberos_mechanism && ((lp_security()==SEC_ADS) || lp_use_kerberos_keytab()) ) {
1150 bool ret = pipe_spnego_auth_bind_kerberos(p, rpc_in_p, pauth_info, &secblob, pout_auth);
1151 data_blob_free(&secblob);
1152 data_blob_free(&blob);
1156 if (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP && p->auth.a_u.auth_ntlmssp_state) {
1157 /* Free any previous auth type. */
1158 free_pipe_ntlmssp_auth_data(&p->auth);
1161 if (!got_kerberos_mechanism) {
1162 /* Initialize the NTLM engine. */
1163 status = auth_ntlmssp_start(&a);
1164 if (!NT_STATUS_IS_OK(status)) {
1169 * Pass the first security blob of data to it.
1170 * This can return an error or NT_STATUS_MORE_PROCESSING_REQUIRED
1171 * which means we need another packet to complete the bind.
1174 status = auth_ntlmssp_update(a, secblob, &chal);
1176 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1177 DEBUG(3,("pipe_spnego_auth_bind_negotiate: auth_ntlmssp_update failed.\n"));
1181 /* Generate the response blob we need for step 2 of the bind. */
1182 response = spnego_gen_auth_response(&chal, status, OID_NTLMSSP);
1185 * SPNEGO negotiate down to NTLMSSP. The subsequent
1186 * code to process follow-up packets is not complete
1189 response = spnego_gen_auth_response(NULL,
1190 NT_STATUS_MORE_PROCESSING_REQUIRED,
1194 /* Copy the blob into the pout_auth parse struct */
1195 init_rpc_hdr_auth(&auth_info, RPC_SPNEGO_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1196 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1197 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of RPC_HDR_AUTH failed.\n"));
1201 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1202 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of data blob failed.\n"));
1206 p->auth.a_u.auth_ntlmssp_state = a;
1207 p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
1208 p->auth.auth_type = PIPE_AUTH_TYPE_SPNEGO_NTLMSSP;
1210 data_blob_free(&blob);
1211 data_blob_free(&secblob);
1212 data_blob_free(&chal);
1213 data_blob_free(&response);
1215 /* We can't set pipe_bound True yet - we need an RPC_ALTER_CONTEXT response packet... */
1220 data_blob_free(&blob);
1221 data_blob_free(&secblob);
1222 data_blob_free(&chal);
1223 data_blob_free(&response);
1225 p->auth.a_u.auth_ntlmssp_state = NULL;
1230 /*******************************************************************
1231 Handle the second part of a SPNEGO bind auth.
1232 *******************************************************************/
1234 static bool pipe_spnego_auth_bind_continue(pipes_struct *p, prs_struct *rpc_in_p,
1235 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1237 RPC_HDR_AUTH auth_info;
1238 DATA_BLOB spnego_blob;
1239 DATA_BLOB auth_blob;
1240 DATA_BLOB auth_reply;
1242 AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
1244 ZERO_STRUCT(spnego_blob);
1245 ZERO_STRUCT(auth_blob);
1246 ZERO_STRUCT(auth_reply);
1247 ZERO_STRUCT(response);
1250 * NB. If we've negotiated down from krb5 to NTLMSSP we'll currently
1251 * fail here as 'a' == NULL.
1253 if (p->auth.auth_type != PIPE_AUTH_TYPE_SPNEGO_NTLMSSP || !a) {
1254 DEBUG(0,("pipe_spnego_auth_bind_continue: not in NTLMSSP auth state.\n"));
1258 /* Grab the SPNEGO blob. */
1259 spnego_blob = data_blob(NULL,p->hdr.auth_len);
1261 if (!prs_copy_data_out((char *)spnego_blob.data, rpc_in_p, p->hdr.auth_len)) {
1262 DEBUG(0,("pipe_spnego_auth_bind_continue: Failed to pull %u bytes - the SPNEGO auth header.\n",
1263 (unsigned int)p->hdr.auth_len ));
1267 if (spnego_blob.data[0] != ASN1_CONTEXT(1)) {
1268 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob type.\n"));
1272 if (!spnego_parse_auth(spnego_blob, &auth_blob)) {
1273 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob.\n"));
1278 * The following call actually checks the challenge/response data.
1279 * for correctness against the given DOMAIN\user name.
1282 if (!pipe_ntlmssp_verify_final(p, &auth_blob)) {
1286 data_blob_free(&spnego_blob);
1287 data_blob_free(&auth_blob);
1289 /* Generate the spnego "accept completed" blob - no incoming data. */
1290 response = spnego_gen_auth_response(&auth_reply, NT_STATUS_OK, OID_NTLMSSP);
1292 /* Copy the blob into the pout_auth parse struct */
1293 init_rpc_hdr_auth(&auth_info, RPC_SPNEGO_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1294 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1295 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of RPC_HDR_AUTH failed.\n"));
1299 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1300 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of data blob failed.\n"));
1304 data_blob_free(&auth_reply);
1305 data_blob_free(&response);
1307 p->pipe_bound = True;
1313 data_blob_free(&spnego_blob);
1314 data_blob_free(&auth_blob);
1315 data_blob_free(&auth_reply);
1316 data_blob_free(&response);
1318 free_pipe_ntlmssp_auth_data(&p->auth);
1319 p->auth.a_u.auth_ntlmssp_state = NULL;
1324 /*******************************************************************
1325 Handle an schannel bind auth.
1326 *******************************************************************/
1328 static bool pipe_schannel_auth_bind(pipes_struct *p, prs_struct *rpc_in_p,
1329 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1331 RPC_HDR_AUTH auth_info;
1332 RPC_AUTH_SCHANNEL_NEG neg;
1333 RPC_AUTH_VERIFIER auth_verifier;
1335 struct dcinfo *pdcinfo;
1337 DATA_BLOB session_key;
1339 if (!smb_io_rpc_auth_schannel_neg("", &neg, rpc_in_p, 0)) {
1340 DEBUG(0,("pipe_schannel_auth_bind: Could not unmarshal SCHANNEL auth neg\n"));
1345 * The neg.myname key here must match the remote computer name
1346 * given in the DOM_CLNT_SRV.uni_comp_name used on all netlogon pipe
1347 * operations that use credentials.
1351 ret = secrets_restore_schannel_session_info(p->mem_ctx, neg.myname, &pdcinfo);
1355 DEBUG(0, ("pipe_schannel_auth_bind: Attempt to bind using schannel without successful serverauth2\n"));
1359 p->auth.a_u.schannel_auth = talloc(p, struct schannel_auth_struct);
1360 if (!p->auth.a_u.schannel_auth) {
1361 TALLOC_FREE(pdcinfo);
1365 memset(p->auth.a_u.schannel_auth->sess_key, 0, sizeof(p->auth.a_u.schannel_auth->sess_key));
1366 memcpy(p->auth.a_u.schannel_auth->sess_key, pdcinfo->sess_key,
1367 sizeof(pdcinfo->sess_key));
1369 TALLOC_FREE(pdcinfo);
1371 p->auth.a_u.schannel_auth->seq_num = 0;
1374 * JRA. Should we also copy the schannel session key into the pipe session key p->session_key
1375 * here ? We do that for NTLMSSP, but the session key is already set up from the vuser
1376 * struct of the person who opened the pipe. I need to test this further. JRA.
1378 * VL. As we are mapping this to guest set the generic key
1379 * "SystemLibraryDTC" key here. It's a bit difficult to test against
1380 * W2k3, as it does not allow schannel binds against SAMR and LSA
1384 session_key = generic_session_key();
1385 if (session_key.data == NULL) {
1386 DEBUG(0, ("pipe_schannel_auth_bind: Could not alloc session"
1391 ret = server_info_set_session_key(p->server_info, session_key);
1393 data_blob_free(&session_key);
1396 DEBUG(0, ("server_info_set_session_key failed\n"));
1400 init_rpc_hdr_auth(&auth_info, RPC_SCHANNEL_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1401 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1402 DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1406 /*** SCHANNEL verifier ***/
1408 init_rpc_auth_verifier(&auth_verifier, "\001", 0x0);
1409 if(!smb_io_rpc_schannel_verifier("", &auth_verifier, pout_auth, 0)) {
1410 DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_AUTH_VERIFIER failed.\n"));
1414 prs_align(pout_auth);
1417 if(!prs_uint32("flags ", pout_auth, 0, &flags)) {
1421 DEBUG(10,("pipe_schannel_auth_bind: schannel auth: domain [%s] myname [%s]\n",
1422 neg.domain, neg.myname));
1424 /* We're finished with this bind - no more packets. */
1425 p->auth.auth_data_free_func = NULL;
1426 p->auth.auth_type = PIPE_AUTH_TYPE_SCHANNEL;
1428 p->pipe_bound = True;
1433 /*******************************************************************
1434 Handle an NTLMSSP bind auth.
1435 *******************************************************************/
1437 static bool pipe_ntlmssp_auth_bind(pipes_struct *p, prs_struct *rpc_in_p,
1438 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1440 RPC_HDR_AUTH auth_info;
1444 AUTH_NTLMSSP_STATE *a = NULL;
1447 ZERO_STRUCT(response);
1449 /* Grab the NTLMSSP blob. */
1450 blob = data_blob(NULL,p->hdr.auth_len);
1452 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
1453 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to pull %u bytes - the NTLM auth header.\n",
1454 (unsigned int)p->hdr.auth_len ));
1458 if (strncmp((char *)blob.data, "NTLMSSP", 7) != 0) {
1459 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to read NTLMSSP in blob\n"));
1463 /* We have an NTLMSSP blob. */
1464 status = auth_ntlmssp_start(&a);
1465 if (!NT_STATUS_IS_OK(status)) {
1466 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_start failed: %s\n",
1467 nt_errstr(status) ));
1471 status = auth_ntlmssp_update(a, blob, &response);
1472 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1473 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_update failed: %s\n",
1474 nt_errstr(status) ));
1478 data_blob_free(&blob);
1480 /* Copy the blob into the pout_auth parse struct */
1481 init_rpc_hdr_auth(&auth_info, RPC_NTLMSSP_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1482 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1483 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1487 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1488 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of data blob failed.\n"));
1492 p->auth.a_u.auth_ntlmssp_state = a;
1493 p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
1494 p->auth.auth_type = PIPE_AUTH_TYPE_NTLMSSP;
1496 data_blob_free(&blob);
1497 data_blob_free(&response);
1499 DEBUG(10,("pipe_ntlmssp_auth_bind: NTLMSSP auth started\n"));
1501 /* We can't set pipe_bound True yet - we need an RPC_AUTH3 response packet... */
1506 data_blob_free(&blob);
1507 data_blob_free(&response);
1509 free_pipe_ntlmssp_auth_data(&p->auth);
1510 p->auth.a_u.auth_ntlmssp_state = NULL;
1514 /*******************************************************************
1515 Respond to a pipe bind request.
1516 *******************************************************************/
1518 bool api_pipe_bind_req(pipes_struct *p, prs_struct *rpc_in_p)
1522 RPC_HDR_AUTH auth_info;
1524 fstring ack_pipe_name;
1525 prs_struct out_hdr_ba;
1526 prs_struct out_auth;
1527 prs_struct outgoing_rpc;
1530 unsigned int auth_type = RPC_ANONYMOUS_AUTH_TYPE;
1532 /* No rebinds on a bound pipe - use alter context. */
1533 if (p->pipe_bound) {
1534 DEBUG(2,("api_pipe_bind_req: rejecting bind request on bound pipe %s.\n", p->pipe_srv_name));
1535 return setup_bind_nak(p);
1538 prs_init_empty( &outgoing_rpc, p->mem_ctx, MARSHALL);
1541 * Marshall directly into the outgoing PDU space. We
1542 * must do this as we need to set to the bind response
1543 * header and are never sending more than one PDU here.
1546 prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
1549 * Setup the memory to marshall the ba header, and the
1553 if(!prs_init(&out_hdr_ba, 1024, p->mem_ctx, MARSHALL)) {
1554 DEBUG(0,("api_pipe_bind_req: malloc out_hdr_ba failed.\n"));
1555 prs_mem_free(&outgoing_rpc);
1559 if(!prs_init(&out_auth, 1024, p->mem_ctx, MARSHALL)) {
1560 DEBUG(0,("api_pipe_bind_req: malloc out_auth failed.\n"));
1561 prs_mem_free(&outgoing_rpc);
1562 prs_mem_free(&out_hdr_ba);
1566 DEBUG(5,("api_pipe_bind_req: decode request. %d\n", __LINE__));
1568 ZERO_STRUCT(hdr_rb);
1570 /* decode the bind request */
1572 if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_in_p, 0)) {
1573 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_RB "
1578 if (hdr_rb.num_contexts == 0) {
1579 DEBUG(0, ("api_pipe_bind_req: no rpc contexts around\n"));
1584 * Try and find the correct pipe name to ensure
1585 * that this is a pipe name we support.
1588 for (i = 0; i < rpc_lookup_size; i++) {
1589 if (ndr_syntax_id_equal(&rpc_lookup[i].rpc_interface,
1590 &hdr_rb.rpc_context[0].abstract)) {
1591 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1592 rpc_lookup[i].pipe.clnt, rpc_lookup[i].pipe.srv));
1593 fstrcpy(p->name, rpc_lookup[i].pipe.clnt);
1594 fstrcpy(p->pipe_srv_name, rpc_lookup[i].pipe.srv);
1599 if (i == rpc_lookup_size) {
1600 if (NT_STATUS_IS_ERR(smb_probe_module("rpc", p->name))) {
1601 DEBUG(3,("api_pipe_bind_req: Unknown pipe name %s in bind request.\n",
1603 prs_mem_free(&outgoing_rpc);
1604 prs_mem_free(&out_hdr_ba);
1605 prs_mem_free(&out_auth);
1607 return setup_bind_nak(p);
1610 for (i = 0; i < rpc_lookup_size; i++) {
1611 if (strequal(rpc_lookup[i].pipe.clnt, p->name)) {
1612 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1613 rpc_lookup[i].pipe.clnt, rpc_lookup[i].pipe.srv));
1614 fstrcpy(p->pipe_srv_name, rpc_lookup[i].pipe.srv);
1619 if (i == rpc_lookup_size) {
1620 DEBUG(0, ("module %s doesn't provide functions for pipe %s!\n", p->name, p->name));
1625 /* name has to be \PIPE\xxxxx */
1626 fstrcpy(ack_pipe_name, "\\PIPE\\");
1627 fstrcat(ack_pipe_name, p->pipe_srv_name);
1629 DEBUG(5,("api_pipe_bind_req: make response. %d\n", __LINE__));
1632 * Check if this is an authenticated bind request.
1635 if (p->hdr.auth_len) {
1637 * Decode the authentication verifier.
1640 if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
1641 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1645 auth_type = auth_info.auth_type;
1647 /* Work out if we have to sign or seal etc. */
1648 switch (auth_info.auth_level) {
1649 case RPC_AUTH_LEVEL_INTEGRITY:
1650 p->auth.auth_level = PIPE_AUTH_LEVEL_INTEGRITY;
1652 case RPC_AUTH_LEVEL_PRIVACY:
1653 p->auth.auth_level = PIPE_AUTH_LEVEL_PRIVACY;
1656 DEBUG(0,("api_pipe_bind_req: unexpected auth level (%u).\n",
1657 (unsigned int)auth_info.auth_level ));
1661 ZERO_STRUCT(auth_info);
1664 assoc_gid = hdr_rb.bba.assoc_gid ? hdr_rb.bba.assoc_gid : 0x53f0;
1667 case RPC_NTLMSSP_AUTH_TYPE:
1668 if (!pipe_ntlmssp_auth_bind(p, rpc_in_p, &auth_info, &out_auth)) {
1674 case RPC_SCHANNEL_AUTH_TYPE:
1675 if (!pipe_schannel_auth_bind(p, rpc_in_p, &auth_info, &out_auth)) {
1680 case RPC_SPNEGO_AUTH_TYPE:
1681 if (!pipe_spnego_auth_bind_negotiate(p, rpc_in_p, &auth_info, &out_auth)) {
1686 case RPC_ANONYMOUS_AUTH_TYPE:
1687 /* Unauthenticated bind request. */
1688 /* We're finished - no more packets. */
1689 p->auth.auth_type = PIPE_AUTH_TYPE_NONE;
1690 /* We must set the pipe auth_level here also. */
1691 p->auth.auth_level = PIPE_AUTH_LEVEL_NONE;
1692 p->pipe_bound = True;
1693 /* The session key was initialized from the SMB
1694 * session in make_internal_rpc_pipe_p */
1698 DEBUG(0,("api_pipe_bind_req: unknown auth type %x requested.\n", auth_type ));
1703 * Create the bind response struct.
1706 /* If the requested abstract synt uuid doesn't match our client pipe,
1707 reject the bind_ack & set the transfer interface synt to all 0's,
1708 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1710 Needed when adding entries to a DACL from NT5 - SK */
1712 if(check_bind_req(p, &hdr_rb.rpc_context[0].abstract, &hdr_rb.rpc_context[0].transfer[0],
1713 hdr_rb.rpc_context[0].context_id )) {
1714 init_rpc_hdr_ba(&hdr_ba,
1715 RPC_MAX_PDU_FRAG_LEN,
1716 RPC_MAX_PDU_FRAG_LEN,
1720 &hdr_rb.rpc_context[0].transfer[0]);
1722 RPC_IFACE null_interface;
1723 ZERO_STRUCT(null_interface);
1724 /* Rejection reason: abstract syntax not supported */
1725 init_rpc_hdr_ba(&hdr_ba, RPC_MAX_PDU_FRAG_LEN,
1726 RPC_MAX_PDU_FRAG_LEN, assoc_gid,
1727 ack_pipe_name, 0x1, 0x2, 0x1,
1729 p->pipe_bound = False;
1736 if(!smb_io_rpc_hdr_ba("", &hdr_ba, &out_hdr_ba, 0)) {
1737 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR_BA failed.\n"));
1742 * Create the header, now we know the length.
1745 if (prs_offset(&out_auth)) {
1746 auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
1749 init_rpc_hdr(&p->hdr, RPC_BINDACK, RPC_FLG_FIRST | RPC_FLG_LAST,
1751 RPC_HEADER_LEN + prs_offset(&out_hdr_ba) + prs_offset(&out_auth),
1755 * Marshall the header into the outgoing PDU.
1758 if(!smb_io_rpc_hdr("", &p->hdr, &outgoing_rpc, 0)) {
1759 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR failed.\n"));
1764 * Now add the RPC_HDR_BA and any auth needed.
1767 if(!prs_append_prs_data( &outgoing_rpc, &out_hdr_ba)) {
1768 DEBUG(0,("api_pipe_bind_req: append of RPC_HDR_BA failed.\n"));
1772 if (auth_len && !prs_append_prs_data( &outgoing_rpc, &out_auth)) {
1773 DEBUG(0,("api_pipe_bind_req: append of auth info failed.\n"));
1778 * Setup the lengths for the initial reply.
1781 p->out_data.data_sent_length = 0;
1782 p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
1783 p->out_data.current_pdu_sent = 0;
1785 prs_mem_free(&out_hdr_ba);
1786 prs_mem_free(&out_auth);
1792 prs_mem_free(&outgoing_rpc);
1793 prs_mem_free(&out_hdr_ba);
1794 prs_mem_free(&out_auth);
1795 return setup_bind_nak(p);
1798 /****************************************************************************
1799 Deal with an alter context call. Can be third part of 3 leg auth request for
1801 ****************************************************************************/
1803 bool api_pipe_alter_context(pipes_struct *p, prs_struct *rpc_in_p)
1807 RPC_HDR_AUTH auth_info;
1809 fstring ack_pipe_name;
1810 prs_struct out_hdr_ba;
1811 prs_struct out_auth;
1812 prs_struct outgoing_rpc;
1815 prs_init_empty( &outgoing_rpc, p->mem_ctx, MARSHALL);
1818 * Marshall directly into the outgoing PDU space. We
1819 * must do this as we need to set to the bind response
1820 * header and are never sending more than one PDU here.
1823 prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
1826 * Setup the memory to marshall the ba header, and the
1830 if(!prs_init(&out_hdr_ba, 1024, p->mem_ctx, MARSHALL)) {
1831 DEBUG(0,("api_pipe_alter_context: malloc out_hdr_ba failed.\n"));
1832 prs_mem_free(&outgoing_rpc);
1836 if(!prs_init(&out_auth, 1024, p->mem_ctx, MARSHALL)) {
1837 DEBUG(0,("api_pipe_alter_context: malloc out_auth failed.\n"));
1838 prs_mem_free(&outgoing_rpc);
1839 prs_mem_free(&out_hdr_ba);
1843 DEBUG(5,("api_pipe_alter_context: decode request. %d\n", __LINE__));
1845 /* decode the alter context request */
1846 if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_in_p, 0)) {
1847 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_RB struct.\n"));
1851 /* secondary address CAN be NULL
1852 * as the specs say it's ignored.
1853 * It MUST be NULL to have the spoolss working.
1855 fstrcpy(ack_pipe_name,"");
1857 DEBUG(5,("api_pipe_alter_context: make response. %d\n", __LINE__));
1860 * Check if this is an authenticated alter context request.
1863 if (p->hdr.auth_len != 0) {
1865 * Decode the authentication verifier.
1868 if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
1869 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1874 * Currently only the SPNEGO auth type uses the alter ctx
1875 * response in place of the NTLMSSP auth3 type.
1878 if (auth_info.auth_type == RPC_SPNEGO_AUTH_TYPE) {
1879 /* We can only finish if the pipe is unbound. */
1880 if (!p->pipe_bound) {
1881 if (!pipe_spnego_auth_bind_continue(p, rpc_in_p, &auth_info, &out_auth)) {
1889 ZERO_STRUCT(auth_info);
1892 assoc_gid = hdr_rb.bba.assoc_gid ? hdr_rb.bba.assoc_gid : 0x53f0;
1895 * Create the bind response struct.
1898 /* If the requested abstract synt uuid doesn't match our client pipe,
1899 reject the bind_ack & set the transfer interface synt to all 0's,
1900 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1902 Needed when adding entries to a DACL from NT5 - SK */
1904 if(check_bind_req(p, &hdr_rb.rpc_context[0].abstract, &hdr_rb.rpc_context[0].transfer[0],
1905 hdr_rb.rpc_context[0].context_id )) {
1906 init_rpc_hdr_ba(&hdr_ba,
1907 RPC_MAX_PDU_FRAG_LEN,
1908 RPC_MAX_PDU_FRAG_LEN,
1912 &hdr_rb.rpc_context[0].transfer[0]);
1914 RPC_IFACE null_interface;
1915 ZERO_STRUCT(null_interface);
1916 /* Rejection reason: abstract syntax not supported */
1917 init_rpc_hdr_ba(&hdr_ba, RPC_MAX_PDU_FRAG_LEN,
1918 RPC_MAX_PDU_FRAG_LEN, assoc_gid,
1919 ack_pipe_name, 0x1, 0x2, 0x1,
1921 p->pipe_bound = False;
1928 if(!smb_io_rpc_hdr_ba("", &hdr_ba, &out_hdr_ba, 0)) {
1929 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR_BA failed.\n"));
1934 * Create the header, now we know the length.
1937 if (prs_offset(&out_auth)) {
1938 auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
1941 init_rpc_hdr(&p->hdr, RPC_ALTCONTRESP, RPC_FLG_FIRST | RPC_FLG_LAST,
1943 RPC_HEADER_LEN + prs_offset(&out_hdr_ba) + prs_offset(&out_auth),
1947 * Marshall the header into the outgoing PDU.
1950 if(!smb_io_rpc_hdr("", &p->hdr, &outgoing_rpc, 0)) {
1951 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR failed.\n"));
1956 * Now add the RPC_HDR_BA and any auth needed.
1959 if(!prs_append_prs_data( &outgoing_rpc, &out_hdr_ba)) {
1960 DEBUG(0,("api_pipe_alter_context: append of RPC_HDR_BA failed.\n"));
1964 if (auth_len && !prs_append_prs_data( &outgoing_rpc, &out_auth)) {
1965 DEBUG(0,("api_pipe_alter_context: append of auth info failed.\n"));
1970 * Setup the lengths for the initial reply.
1973 p->out_data.data_sent_length = 0;
1974 p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
1975 p->out_data.current_pdu_sent = 0;
1977 prs_mem_free(&out_hdr_ba);
1978 prs_mem_free(&out_auth);
1984 prs_mem_free(&outgoing_rpc);
1985 prs_mem_free(&out_hdr_ba);
1986 prs_mem_free(&out_auth);
1987 return setup_bind_nak(p);
1990 /****************************************************************************
1991 Deal with NTLMSSP sign & seal processing on an RPC request.
1992 ****************************************************************************/
1994 bool api_pipe_ntlmssp_auth_process(pipes_struct *p, prs_struct *rpc_in,
1995 uint32 *p_ss_padding_len, NTSTATUS *pstatus)
1997 RPC_HDR_AUTH auth_info;
1998 uint32 auth_len = p->hdr.auth_len;
1999 uint32 save_offset = prs_offset(rpc_in);
2000 AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
2001 unsigned char *data = NULL;
2003 unsigned char *full_packet_data = NULL;
2004 size_t full_packet_data_len;
2005 DATA_BLOB auth_blob;
2007 *pstatus = NT_STATUS_OK;
2009 if (p->auth.auth_level == PIPE_AUTH_LEVEL_NONE || p->auth.auth_level == PIPE_AUTH_LEVEL_CONNECT) {
2014 *pstatus = NT_STATUS_INVALID_PARAMETER;
2018 /* Ensure there's enough data for an authenticated request. */
2019 if ((auth_len > RPC_MAX_SIGN_SIZE) ||
2020 (RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_HDR_AUTH_LEN + auth_len > p->hdr.frag_len)) {
2021 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len %u is too large.\n",
2022 (unsigned int)auth_len ));
2023 *pstatus = NT_STATUS_INVALID_PARAMETER;
2028 * We need the full packet data + length (minus auth stuff) as well as the packet data + length
2029 * after the RPC header.
2030 * We need to pass in the full packet (minus auth len) to the NTLMSSP sign and check seal
2031 * functions as NTLMv2 checks the rpc headers also.
2034 data = (unsigned char *)(prs_data_p(rpc_in) + RPC_HDR_REQ_LEN);
2035 data_len = (size_t)(p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN - RPC_HDR_AUTH_LEN - auth_len);
2037 full_packet_data = p->in_data.current_in_pdu;
2038 full_packet_data_len = p->hdr.frag_len - auth_len;
2040 /* Pull the auth header and the following data into a blob. */
2041 if(!prs_set_offset(rpc_in, RPC_HDR_REQ_LEN + data_len)) {
2042 DEBUG(0,("api_pipe_ntlmssp_auth_process: cannot move offset to %u.\n",
2043 (unsigned int)RPC_HDR_REQ_LEN + (unsigned int)data_len ));
2044 *pstatus = NT_STATUS_INVALID_PARAMETER;
2048 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
2049 DEBUG(0,("api_pipe_ntlmssp_auth_process: failed to unmarshall RPC_HDR_AUTH.\n"));
2050 *pstatus = NT_STATUS_INVALID_PARAMETER;
2054 auth_blob.data = (unsigned char *)prs_data_p(rpc_in) + prs_offset(rpc_in);
2055 auth_blob.length = auth_len;
2057 switch (p->auth.auth_level) {
2058 case PIPE_AUTH_LEVEL_PRIVACY:
2059 /* Data is encrypted. */
2060 *pstatus = ntlmssp_unseal_packet(a->ntlmssp_state,
2063 full_packet_data_len,
2065 if (!NT_STATUS_IS_OK(*pstatus)) {
2069 case PIPE_AUTH_LEVEL_INTEGRITY:
2070 /* Data is signed. */
2071 *pstatus = ntlmssp_check_packet(a->ntlmssp_state,
2074 full_packet_data_len,
2076 if (!NT_STATUS_IS_OK(*pstatus)) {
2081 *pstatus = NT_STATUS_INVALID_PARAMETER;
2086 * Return the current pointer to the data offset.
2089 if(!prs_set_offset(rpc_in, save_offset)) {
2090 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
2091 (unsigned int)save_offset ));
2092 *pstatus = NT_STATUS_INVALID_PARAMETER;
2097 * Remember the padding length. We must remove it from the real data
2098 * stream once the sign/seal is done.
2101 *p_ss_padding_len = auth_info.auth_pad_len;
2106 /****************************************************************************
2107 Deal with schannel processing on an RPC request.
2108 ****************************************************************************/
2110 bool api_pipe_schannel_process(pipes_struct *p, prs_struct *rpc_in, uint32 *p_ss_padding_len)
2114 uint32 save_offset = prs_offset(rpc_in);
2115 RPC_HDR_AUTH auth_info;
2116 RPC_AUTH_SCHANNEL_CHK schannel_chk;
2118 auth_len = p->hdr.auth_len;
2120 if (auth_len != RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN) {
2121 DEBUG(0,("Incorrect auth_len %u.\n", (unsigned int)auth_len ));
2126 * The following is that length of the data we must verify or unseal.
2127 * This doesn't include the RPC headers or the auth_len or the RPC_HDR_AUTH_LEN
2128 * preceeding the auth_data.
2131 if (p->hdr.frag_len < RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_HDR_AUTH_LEN + auth_len) {
2132 DEBUG(0,("Incorrect frag %u, auth %u.\n",
2133 (unsigned int)p->hdr.frag_len,
2134 (unsigned int)auth_len ));
2138 data_len = p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN -
2139 RPC_HDR_AUTH_LEN - auth_len;
2141 DEBUG(5,("data %d auth %d\n", data_len, auth_len));
2143 if(!prs_set_offset(rpc_in, RPC_HDR_REQ_LEN + data_len)) {
2144 DEBUG(0,("cannot move offset to %u.\n",
2145 (unsigned int)RPC_HDR_REQ_LEN + data_len ));
2149 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
2150 DEBUG(0,("failed to unmarshall RPC_HDR_AUTH.\n"));
2154 if (auth_info.auth_type != RPC_SCHANNEL_AUTH_TYPE) {
2155 DEBUG(0,("Invalid auth info %d on schannel\n",
2156 auth_info.auth_type));
2160 if(!smb_io_rpc_auth_schannel_chk("", RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN, &schannel_chk, rpc_in, 0)) {
2161 DEBUG(0,("failed to unmarshal RPC_AUTH_SCHANNEL_CHK.\n"));
2165 if (!schannel_decode(p->auth.a_u.schannel_auth,
2167 SENDER_IS_INITIATOR,
2169 prs_data_p(rpc_in)+RPC_HDR_REQ_LEN, data_len)) {
2170 DEBUG(3,("failed to decode PDU\n"));
2175 * Return the current pointer to the data offset.
2178 if(!prs_set_offset(rpc_in, save_offset)) {
2179 DEBUG(0,("failed to set offset back to %u\n",
2180 (unsigned int)save_offset ));
2184 /* The sequence number gets incremented on both send and receive. */
2185 p->auth.a_u.schannel_auth->seq_num++;
2188 * Remember the padding length. We must remove it from the real data
2189 * stream once the sign/seal is done.
2192 *p_ss_padding_len = auth_info.auth_pad_len;
2197 /****************************************************************************
2198 Find the set of RPC functions associated with this context_id
2199 ****************************************************************************/
2201 static PIPE_RPC_FNS* find_pipe_fns_by_context( PIPE_RPC_FNS *list, uint32 context_id )
2203 PIPE_RPC_FNS *fns = NULL;
2204 PIPE_RPC_FNS *tmp = NULL;
2207 DEBUG(0,("find_pipe_fns_by_context: ERROR! No context list for pipe!\n"));
2211 for (tmp=list; tmp; tmp=tmp->next ) {
2212 if ( tmp->context_id == context_id )
2221 /****************************************************************************
2223 ****************************************************************************/
2225 void free_pipe_rpc_context( PIPE_RPC_FNS *list )
2227 PIPE_RPC_FNS *tmp = list;
2239 static bool api_rpcTNP(pipes_struct *p, const char *rpc_name,
2240 const struct api_struct *api_rpc_cmds, int n_cmds);
2242 /****************************************************************************
2243 Find the correct RPC function to call for this request.
2244 If the pipe is authenticated then become the correct UNIX user
2245 before doing the call.
2246 ****************************************************************************/
2248 bool api_pipe_request(pipes_struct *p)
2251 bool changed_user = False;
2252 PIPE_RPC_FNS *pipe_fns;
2254 if (p->pipe_bound &&
2255 ((p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP) ||
2256 (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP))) {
2257 if(!become_authenticated_pipe_user(p)) {
2258 prs_mem_free(&p->out_data.rdata);
2261 changed_user = True;
2264 DEBUG(5, ("Requested \\PIPE\\%s\n", p->name));
2266 /* get the set of RPC functions for this context */
2268 pipe_fns = find_pipe_fns_by_context(p->contexts, p->hdr_req.context_id);
2271 TALLOC_CTX *frame = talloc_stackframe();
2272 ret = api_rpcTNP(p, p->name, pipe_fns->cmds, pipe_fns->n_cmds);
2276 DEBUG(0,("api_pipe_request: No rpc function table associated with context [%d] on pipe [%s]\n",
2277 p->hdr_req.context_id, p->name));
2281 unbecome_authenticated_pipe_user();
2287 /*******************************************************************
2288 Calls the underlying RPC function for a named pipe.
2289 ********************************************************************/
2291 static bool api_rpcTNP(pipes_struct *p, const char *rpc_name,
2292 const struct api_struct *api_rpc_cmds, int n_cmds)
2296 uint32 offset1, offset2;
2298 /* interpret the command */
2299 DEBUG(4,("api_rpcTNP: %s op 0x%x - ", rpc_name, p->hdr_req.opnum));
2301 slprintf(name, sizeof(name)-1, "in_%s", rpc_name);
2302 prs_dump(name, p->hdr_req.opnum, &p->in_data.data);
2304 for (fn_num = 0; fn_num < n_cmds; fn_num++) {
2305 if (api_rpc_cmds[fn_num].opnum == p->hdr_req.opnum && api_rpc_cmds[fn_num].fn != NULL) {
2306 DEBUG(3,("api_rpcTNP: rpc command: %s\n", api_rpc_cmds[fn_num].name));
2311 if (fn_num == n_cmds) {
2313 * For an unknown RPC just return a fault PDU but
2314 * return True to allow RPC's on the pipe to continue
2315 * and not put the pipe into fault state. JRA.
2317 DEBUG(4, ("unknown\n"));
2318 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
2322 offset1 = prs_offset(&p->out_data.rdata);
2324 DEBUG(6, ("api_rpc_cmds[%d].fn == %p\n",
2325 fn_num, api_rpc_cmds[fn_num].fn));
2326 /* do the actual command */
2327 if(!api_rpc_cmds[fn_num].fn(p)) {
2328 DEBUG(0,("api_rpcTNP: %s: %s failed.\n", rpc_name, api_rpc_cmds[fn_num].name));
2329 prs_mem_free(&p->out_data.rdata);
2333 if (p->bad_handle_fault_state) {
2334 DEBUG(4,("api_rpcTNP: bad handle fault return.\n"));
2335 p->bad_handle_fault_state = False;
2336 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_CONTEXT_MISMATCH));
2340 if (p->rng_fault_state) {
2341 DEBUG(4, ("api_rpcTNP: rng fault return\n"));
2342 p->rng_fault_state = False;
2343 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
2347 slprintf(name, sizeof(name)-1, "out_%s", rpc_name);
2348 offset2 = prs_offset(&p->out_data.rdata);
2349 prs_set_offset(&p->out_data.rdata, offset1);
2350 prs_dump(name, p->hdr_req.opnum, &p->out_data.rdata);
2351 prs_set_offset(&p->out_data.rdata, offset2);
2353 DEBUG(5,("api_rpcTNP: called %s successfully\n", rpc_name));
2355 /* Check for buffer underflow in rpc parsing */
2357 if ((DEBUGLEVEL >= 10) &&
2358 (prs_offset(&p->in_data.data) != prs_data_size(&p->in_data.data))) {
2359 size_t data_len = prs_data_size(&p->in_data.data) - prs_offset(&p->in_data.data);
2360 char *data = (char *)SMB_MALLOC(data_len);
2362 DEBUG(10, ("api_rpcTNP: rpc input buffer underflow (parse error?)\n"));
2364 prs_uint8s(False, "", &p->in_data.data, 0, (unsigned char *)data, (uint32)data_len);