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.
31 #include "../libcli/auth/libcli_auth.h"
32 #include "../librpc/gen_ndr/ndr_schannel.h"
34 extern struct current_user current_user;
37 #define DBGC_CLASS DBGC_RPC_SRV
39 static void free_pipe_ntlmssp_auth_data(struct pipe_auth_data *auth)
41 AUTH_NTLMSSP_STATE *a = auth->a_u.auth_ntlmssp_state;
46 auth->a_u.auth_ntlmssp_state = NULL;
49 static DATA_BLOB generic_session_key(void)
51 return data_blob("SystemLibraryDTC", 16);
54 /*******************************************************************
55 Generate the next PDU to be returned from the data in p->rdata.
57 ********************************************************************/
59 static bool create_next_pdu_ntlmssp(pipes_struct *p)
61 RPC_HDR_RESP hdr_resp;
62 uint32 ss_padding_len = 0;
63 uint32 data_space_available;
68 RPC_HDR_AUTH auth_info;
69 uint8 auth_type, auth_level;
70 AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
73 * If we're in the fault state, keep returning fault PDU's until
74 * the pipe gets closed. JRA.
78 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
82 memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
84 /* Change the incoming request header to a response. */
85 p->hdr.pkt_type = RPC_RESPONSE;
87 /* Set up rpc header flags. */
88 if (p->out_data.data_sent_length == 0) {
89 p->hdr.flags = RPC_FLG_FIRST;
95 * Work out how much we can fit in a single PDU.
98 data_len_left = prs_offset(&p->out_data.rdata) - p->out_data.data_sent_length;
101 * Ensure there really is data left to send.
105 DEBUG(0,("create_next_pdu_ntlmssp: no data left to send !\n"));
109 data_space_available = RPC_MAX_PDU_FRAG_LEN - RPC_HEADER_LEN
110 - RPC_HDR_RESP_LEN - RPC_HDR_AUTH_LEN - NTLMSSP_SIG_SIZE;
113 * The amount we send is the minimum of the available
114 * space and the amount left to send.
117 data_len = MIN(data_len_left, data_space_available);
120 * Set up the alloc hint. This should be the data left to
124 hdr_resp.alloc_hint = data_len_left;
127 * Work out if this PDU will be the last.
130 if(p->out_data.data_sent_length + data_len >= prs_offset(&p->out_data.rdata)) {
131 p->hdr.flags |= RPC_FLG_LAST;
132 if (data_len_left % 8) {
133 ss_padding_len = 8 - (data_len_left % 8);
134 DEBUG(10,("create_next_pdu_ntlmssp: adding sign/seal padding of %u\n",
140 * Set up the header lengths.
143 p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN +
144 data_len + ss_padding_len +
145 RPC_HDR_AUTH_LEN + NTLMSSP_SIG_SIZE;
146 p->hdr.auth_len = NTLMSSP_SIG_SIZE;
150 * Init the parse struct to point at the outgoing
154 prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
156 /* Store the header in the data stream. */
157 if(!smb_io_rpc_hdr("hdr", &p->hdr, &p->out_data.frag, 0)) {
158 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR.\n"));
159 prs_mem_free(&p->out_data.frag);
163 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &p->out_data.frag, 0)) {
164 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_RESP.\n"));
165 prs_mem_free(&p->out_data.frag);
169 /* Copy the data into the PDU. */
171 if(!prs_append_some_prs_data(&p->out_data.frag, &p->out_data.rdata,
172 p->out_data.data_sent_length, data_len)) {
173 DEBUG(0,("create_next_pdu_ntlmssp: failed to copy %u bytes of data.\n", (unsigned int)data_len));
174 prs_mem_free(&p->out_data.frag);
178 /* Copy the sign/seal padding data. */
179 if (ss_padding_len) {
182 memset(pad, '\0', 8);
183 if (!prs_copy_data_in(&p->out_data.frag, pad,
185 DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes of pad data.\n",
186 (unsigned int)ss_padding_len));
187 prs_mem_free(&p->out_data.frag);
193 /* Now write out the auth header and null blob. */
194 if (p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP) {
195 auth_type = DCERPC_AUTH_TYPE_NTLMSSP;
197 auth_type = DCERPC_AUTH_TYPE_SPNEGO;
199 if (p->auth.auth_level == DCERPC_AUTH_LEVEL_PRIVACY) {
200 auth_level = DCERPC_AUTH_LEVEL_PRIVACY;
202 auth_level = DCERPC_AUTH_LEVEL_INTEGRITY;
205 init_rpc_hdr_auth(&auth_info, auth_type, auth_level, ss_padding_len, 1 /* context id. */);
206 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, &p->out_data.frag,
208 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_AUTH.\n"));
209 prs_mem_free(&p->out_data.frag);
213 /* Generate the sign blob. */
215 switch (p->auth.auth_level) {
216 case DCERPC_AUTH_LEVEL_PRIVACY:
217 /* Data portion is encrypted. */
218 status = ntlmssp_seal_packet(
220 (uint8_t *)prs_data_p(&p->out_data.frag)
221 + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
222 data_len + ss_padding_len,
223 (unsigned char *)prs_data_p(&p->out_data.frag),
224 (size_t)prs_offset(&p->out_data.frag),
226 if (!NT_STATUS_IS_OK(status)) {
227 data_blob_free(&auth_blob);
228 prs_mem_free(&p->out_data.frag);
232 case DCERPC_AUTH_LEVEL_INTEGRITY:
233 /* Data is signed. */
234 status = ntlmssp_sign_packet(
236 (unsigned char *)prs_data_p(&p->out_data.frag)
237 + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
238 data_len + ss_padding_len,
239 (unsigned char *)prs_data_p(&p->out_data.frag),
240 (size_t)prs_offset(&p->out_data.frag),
242 if (!NT_STATUS_IS_OK(status)) {
243 data_blob_free(&auth_blob);
244 prs_mem_free(&p->out_data.frag);
249 prs_mem_free(&p->out_data.frag);
253 /* Append the auth blob. */
254 if (!prs_copy_data_in(&p->out_data.frag, (char *)auth_blob.data,
256 DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes auth blob.\n",
257 (unsigned int)NTLMSSP_SIG_SIZE));
258 data_blob_free(&auth_blob);
259 prs_mem_free(&p->out_data.frag);
263 data_blob_free(&auth_blob);
266 * Setup the counts for this PDU.
269 p->out_data.data_sent_length += data_len;
270 p->out_data.current_pdu_sent = 0;
275 /*******************************************************************
276 Generate the next PDU to be returned from the data in p->rdata.
277 Return an schannel authenticated fragment.
278 ********************************************************************/
280 static bool create_next_pdu_schannel(pipes_struct *p)
282 RPC_HDR_RESP hdr_resp;
283 uint32 ss_padding_len = 0;
285 uint32 data_space_available;
286 uint32 data_len_left;
290 * If we're in the fault state, keep returning fault PDU's until
291 * the pipe gets closed. JRA.
295 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
299 memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
301 /* Change the incoming request header to a response. */
302 p->hdr.pkt_type = RPC_RESPONSE;
304 /* Set up rpc header flags. */
305 if (p->out_data.data_sent_length == 0) {
306 p->hdr.flags = RPC_FLG_FIRST;
312 * Work out how much we can fit in a single PDU.
315 data_len_left = prs_offset(&p->out_data.rdata) - p->out_data.data_sent_length;
318 * Ensure there really is data left to send.
322 DEBUG(0,("create_next_pdu_schannel: no data left to send !\n"));
326 data_space_available = RPC_MAX_PDU_FRAG_LEN - RPC_HEADER_LEN
327 - RPC_HDR_RESP_LEN - RPC_HDR_AUTH_LEN
328 - RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
331 * The amount we send is the minimum of the available
332 * space and the amount left to send.
335 data_len = MIN(data_len_left, data_space_available);
338 * Set up the alloc hint. This should be the data left to
342 hdr_resp.alloc_hint = data_len_left;
345 * Work out if this PDU will be the last.
348 if(p->out_data.data_sent_length + data_len >= prs_offset(&p->out_data.rdata)) {
349 p->hdr.flags |= RPC_FLG_LAST;
350 if (data_len_left % 8) {
351 ss_padding_len = 8 - (data_len_left % 8);
352 DEBUG(10,("create_next_pdu_schannel: adding sign/seal padding of %u\n",
357 p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len + ss_padding_len +
358 RPC_HDR_AUTH_LEN + RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
359 p->hdr.auth_len = RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
362 * Init the parse struct to point at the outgoing
366 prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
368 /* Store the header in the data stream. */
369 if(!smb_io_rpc_hdr("hdr", &p->hdr, &p->out_data.frag, 0)) {
370 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR.\n"));
371 prs_mem_free(&p->out_data.frag);
375 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &p->out_data.frag, 0)) {
376 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_RESP.\n"));
377 prs_mem_free(&p->out_data.frag);
381 /* Store the current offset. */
382 data_pos = prs_offset(&p->out_data.frag);
384 /* Copy the data into the PDU. */
386 if(!prs_append_some_prs_data(&p->out_data.frag, &p->out_data.rdata,
387 p->out_data.data_sent_length, data_len)) {
388 DEBUG(0,("create_next_pdu_schannel: failed to copy %u bytes of data.\n", (unsigned int)data_len));
389 prs_mem_free(&p->out_data.frag);
393 /* Copy the sign/seal padding data. */
394 if (ss_padding_len) {
396 memset(pad, '\0', 8);
397 if (!prs_copy_data_in(&p->out_data.frag, pad,
399 DEBUG(0,("create_next_pdu_schannel: failed to add %u bytes of pad data.\n", (unsigned int)ss_padding_len));
400 prs_mem_free(&p->out_data.frag);
407 * Schannel processing.
409 RPC_HDR_AUTH auth_info;
410 struct NL_AUTH_SIGNATURE verf;
412 enum ndr_err_code ndr_err;
414 /* Check it's the type of reply we were expecting to decode */
416 init_rpc_hdr_auth(&auth_info,
417 DCERPC_AUTH_TYPE_SCHANNEL,
418 p->auth.auth_level == DCERPC_AUTH_LEVEL_PRIVACY ?
419 DCERPC_AUTH_LEVEL_PRIVACY : DCERPC_AUTH_LEVEL_INTEGRITY,
422 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info,
423 &p->out_data.frag, 0)) {
424 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_AUTH.\n"));
425 prs_mem_free(&p->out_data.frag);
429 schannel_encode(p->auth.a_u.schannel_auth,
430 p->auth.auth_level, SENDER_IS_ACCEPTOR, &verf,
431 prs_data_p(&p->out_data.frag) + data_pos,
432 data_len + ss_padding_len);
434 /* Finally marshall the blob. */
436 ndr_err = ndr_push_struct_blob(&blob, talloc_tos(), NULL, &verf,
437 (ndr_push_flags_fn_t)ndr_push_NL_AUTH_SIGNATURE);
438 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
439 prs_mem_free(&p->out_data.frag);
443 if (DEBUGLEVEL >= 10) {
444 NDR_PRINT_DEBUG(NL_AUTH_SIGNATURE, &verf);
447 if (!prs_copy_data_in(&p->out_data.frag, (const char *)blob.data, blob.length)) {
448 prs_mem_free(&p->out_data.frag);
452 p->auth.a_u.schannel_auth->seq_num++;
456 * Setup the counts for this PDU.
459 p->out_data.data_sent_length += data_len;
460 p->out_data.current_pdu_sent = 0;
465 /*******************************************************************
466 Generate the next PDU to be returned from the data in p->rdata.
467 No authentication done.
468 ********************************************************************/
470 static bool create_next_pdu_noauth(pipes_struct *p)
472 RPC_HDR_RESP hdr_resp;
474 uint32 data_space_available;
475 uint32 data_len_left;
478 * If we're in the fault state, keep returning fault PDU's until
479 * the pipe gets closed. JRA.
483 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
487 memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
489 /* Change the incoming request header to a response. */
490 p->hdr.pkt_type = RPC_RESPONSE;
492 /* Set up rpc header flags. */
493 if (p->out_data.data_sent_length == 0) {
494 p->hdr.flags = RPC_FLG_FIRST;
500 * Work out how much we can fit in a single PDU.
503 data_len_left = prs_offset(&p->out_data.rdata) - p->out_data.data_sent_length;
506 * Ensure there really is data left to send.
510 DEBUG(0,("create_next_pdu_noath: no data left to send !\n"));
514 data_space_available = RPC_MAX_PDU_FRAG_LEN - RPC_HEADER_LEN
518 * The amount we send is the minimum of the available
519 * space and the amount left to send.
522 data_len = MIN(data_len_left, data_space_available);
525 * Set up the alloc hint. This should be the data left to
529 hdr_resp.alloc_hint = data_len_left;
532 * Work out if this PDU will be the last.
535 if(p->out_data.data_sent_length + data_len >= prs_offset(&p->out_data.rdata)) {
536 p->hdr.flags |= RPC_FLG_LAST;
540 * Set up the header lengths.
543 p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len;
547 * Init the parse struct to point at the outgoing
551 prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
553 /* Store the header in the data stream. */
554 if(!smb_io_rpc_hdr("hdr", &p->hdr, &p->out_data.frag, 0)) {
555 DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR.\n"));
556 prs_mem_free(&p->out_data.frag);
560 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &p->out_data.frag, 0)) {
561 DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR_RESP.\n"));
562 prs_mem_free(&p->out_data.frag);
566 /* Copy the data into the PDU. */
568 if(!prs_append_some_prs_data(&p->out_data.frag, &p->out_data.rdata,
569 p->out_data.data_sent_length, data_len)) {
570 DEBUG(0,("create_next_pdu_noauth: failed to copy %u bytes of data.\n", (unsigned int)data_len));
571 prs_mem_free(&p->out_data.frag);
576 * Setup the counts for this PDU.
579 p->out_data.data_sent_length += data_len;
580 p->out_data.current_pdu_sent = 0;
585 /*******************************************************************
586 Generate the next PDU to be returned from the data in p->rdata.
587 ********************************************************************/
589 bool create_next_pdu(pipes_struct *p)
591 switch(p->auth.auth_level) {
592 case DCERPC_AUTH_LEVEL_NONE:
593 case DCERPC_AUTH_LEVEL_CONNECT:
594 /* This is incorrect for auth level connect. Fixme. JRA */
595 return create_next_pdu_noauth(p);
598 switch(p->auth.auth_type) {
599 case PIPE_AUTH_TYPE_NTLMSSP:
600 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
601 return create_next_pdu_ntlmssp(p);
602 case PIPE_AUTH_TYPE_SCHANNEL:
603 return create_next_pdu_schannel(p);
609 DEBUG(0,("create_next_pdu: invalid internal auth level %u / type %u",
610 (unsigned int)p->auth.auth_level,
611 (unsigned int)p->auth.auth_type));
615 /*******************************************************************
616 Process an NTLMSSP authentication response.
617 If this function succeeds, the user has been authenticated
618 and their domain, name and calling workstation stored in
620 *******************************************************************/
622 static bool pipe_ntlmssp_verify_final(pipes_struct *p, DATA_BLOB *p_resp_blob)
624 DATA_BLOB session_key, reply;
626 AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
629 DEBUG(5,("pipe_ntlmssp_verify_final: pipe %s checking user details\n",
630 get_pipe_name_from_iface(&p->syntax)));
634 /* this has to be done as root in order to verify the password */
636 status = auth_ntlmssp_update(a, *p_resp_blob, &reply);
639 /* Don't generate a reply. */
640 data_blob_free(&reply);
642 if (!NT_STATUS_IS_OK(status)) {
646 /* Finally - if the pipe negotiated integrity (sign) or privacy (seal)
647 ensure the underlying NTLMSSP flags are also set. If not we should
650 if (p->auth.auth_level == DCERPC_AUTH_LEVEL_INTEGRITY) {
651 if (!(a->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN)) {
652 DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet integrity requested "
653 "but client declined signing.\n",
654 get_pipe_name_from_iface(&p->syntax)));
658 if (p->auth.auth_level == DCERPC_AUTH_LEVEL_PRIVACY) {
659 if (!(a->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL)) {
660 DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet privacy requested "
661 "but client declined sealing.\n",
662 get_pipe_name_from_iface(&p->syntax)));
667 DEBUG(5, ("pipe_ntlmssp_verify_final: OK: user: %s domain: %s "
668 "workstation: %s\n", a->ntlmssp_state->user,
669 a->ntlmssp_state->domain, a->ntlmssp_state->workstation));
671 if (a->server_info->ptok == NULL) {
672 DEBUG(1,("Error: Authmodule failed to provide nt_user_token\n"));
676 TALLOC_FREE(p->server_info);
678 p->server_info = copy_serverinfo(p, a->server_info);
679 if (p->server_info == NULL) {
680 DEBUG(0, ("copy_serverinfo failed\n"));
685 * We're an authenticated bind over smb, so the session key needs to
686 * be set to "SystemLibraryDTC". Weird, but this is what Windows
687 * does. See the RPC-SAMBA3SESSIONKEY.
690 session_key = generic_session_key();
691 if (session_key.data == NULL) {
695 ret = server_info_set_session_key(p->server_info, session_key);
697 data_blob_free(&session_key);
702 /*******************************************************************
703 The switch table for the pipe names and the functions to handle them.
704 *******************************************************************/
711 struct ndr_syntax_id rpc_interface;
712 const struct api_struct *cmds;
716 static struct rpc_table *rpc_lookup;
717 static int rpc_lookup_size;
719 /*******************************************************************
720 This is the "stage3" NTLMSSP response after a bind request and reply.
721 *******************************************************************/
723 bool api_pipe_bind_auth3(pipes_struct *p, prs_struct *rpc_in_p)
725 RPC_HDR_AUTH auth_info;
731 DEBUG(5,("api_pipe_bind_auth3: decode request. %d\n", __LINE__));
733 if (p->hdr.auth_len == 0) {
734 DEBUG(0,("api_pipe_bind_auth3: No auth field sent !\n"));
738 /* 4 bytes padding. */
739 if (!prs_uint32("pad", rpc_in_p, 0, &pad)) {
740 DEBUG(0,("api_pipe_bind_auth3: unmarshall of 4 byte pad failed.\n"));
745 * Decode the authentication verifier response.
748 if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
749 DEBUG(0,("api_pipe_bind_auth3: unmarshall of RPC_HDR_AUTH failed.\n"));
753 if (auth_info.auth_type != DCERPC_AUTH_TYPE_NTLMSSP) {
754 DEBUG(0,("api_pipe_bind_auth3: incorrect auth type (%u).\n",
755 (unsigned int)auth_info.auth_type ));
759 blob = data_blob(NULL,p->hdr.auth_len);
761 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
762 DEBUG(0,("api_pipe_bind_auth3: Failed to pull %u bytes - the response blob.\n",
763 (unsigned int)p->hdr.auth_len ));
768 * The following call actually checks the challenge/response data.
769 * for correctness against the given DOMAIN\user name.
772 if (!pipe_ntlmssp_verify_final(p, &blob)) {
776 data_blob_free(&blob);
778 p->pipe_bound = True;
784 data_blob_free(&blob);
785 free_pipe_ntlmssp_auth_data(&p->auth);
786 p->auth.a_u.auth_ntlmssp_state = NULL;
791 /*******************************************************************
792 Marshall a bind_nak pdu.
793 *******************************************************************/
795 static bool setup_bind_nak(pipes_struct *p)
800 /* Free any memory in the current return data buffer. */
801 prs_mem_free(&p->out_data.rdata);
804 * Marshall directly into the outgoing PDU space. We
805 * must do this as we need to set to the bind response
806 * header and are never sending more than one PDU here.
809 prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
812 * Initialize a bind_nak header.
815 init_rpc_hdr(&nak_hdr, RPC_BINDNACK, RPC_FLG_FIRST | RPC_FLG_LAST,
816 p->hdr.call_id, RPC_HEADER_LEN + sizeof(uint16), 0);
819 * Marshall the header into the outgoing PDU.
822 if(!smb_io_rpc_hdr("", &nak_hdr, &p->out_data.frag, 0)) {
823 DEBUG(0,("setup_bind_nak: marshalling of RPC_HDR failed.\n"));
824 prs_mem_free(&p->out_data.frag);
829 * Now add the reject reason.
832 if(!prs_uint16("reject code", &p->out_data.frag, 0, &zero)) {
833 prs_mem_free(&p->out_data.frag);
837 p->out_data.data_sent_length = 0;
838 p->out_data.current_pdu_sent = 0;
840 if (p->auth.auth_data_free_func) {
841 (*p->auth.auth_data_free_func)(&p->auth);
843 p->auth.auth_level = DCERPC_AUTH_LEVEL_NONE;
844 p->auth.auth_type = PIPE_AUTH_TYPE_NONE;
845 p->pipe_bound = False;
850 /*******************************************************************
851 Marshall a fault pdu.
852 *******************************************************************/
854 bool setup_fault_pdu(pipes_struct *p, NTSTATUS status)
857 RPC_HDR_RESP hdr_resp;
858 RPC_HDR_FAULT fault_resp;
860 /* Free any memory in the current return data buffer. */
861 prs_mem_free(&p->out_data.rdata);
864 * Marshall directly into the outgoing PDU space. We
865 * must do this as we need to set to the bind response
866 * header and are never sending more than one PDU here.
869 prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
872 * Initialize a fault header.
875 init_rpc_hdr(&fault_hdr, RPC_FAULT, RPC_FLG_FIRST | RPC_FLG_LAST | RPC_FLG_NOCALL,
876 p->hdr.call_id, RPC_HEADER_LEN + RPC_HDR_RESP_LEN + RPC_HDR_FAULT_LEN, 0);
879 * Initialize the HDR_RESP and FAULT parts of the PDU.
882 memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
884 fault_resp.status = status;
885 fault_resp.reserved = 0;
888 * Marshall the header into the outgoing PDU.
891 if(!smb_io_rpc_hdr("", &fault_hdr, &p->out_data.frag, 0)) {
892 DEBUG(0,("setup_fault_pdu: marshalling of RPC_HDR failed.\n"));
893 prs_mem_free(&p->out_data.frag);
897 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &p->out_data.frag, 0)) {
898 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_RESP.\n"));
899 prs_mem_free(&p->out_data.frag);
903 if(!smb_io_rpc_hdr_fault("fault", &fault_resp, &p->out_data.frag, 0)) {
904 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_FAULT.\n"));
905 prs_mem_free(&p->out_data.frag);
909 p->out_data.data_sent_length = 0;
910 p->out_data.current_pdu_sent = 0;
916 /*******************************************************************
917 Marshall a cancel_ack pdu.
918 We should probably check the auth-verifier here.
919 *******************************************************************/
921 bool setup_cancel_ack_reply(pipes_struct *p, prs_struct *rpc_in_p)
923 prs_struct outgoing_pdu;
924 RPC_HDR ack_reply_hdr;
926 /* Free any memory in the current return data buffer. */
927 prs_mem_free(&p->out_data.rdata);
930 * Marshall directly into the outgoing PDU space. We
931 * must do this as we need to set to the bind response
932 * header and are never sending more than one PDU here.
935 prs_init_empty( &outgoing_pdu, p->mem_ctx, MARSHALL);
936 prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
939 * Initialize a cancel_ack header.
942 init_rpc_hdr(&ack_reply_hdr, RPC_CANCEL_ACK, RPC_FLG_FIRST | RPC_FLG_LAST,
943 p->hdr.call_id, RPC_HEADER_LEN, 0);
946 * Marshall the header into the outgoing PDU.
949 if(!smb_io_rpc_hdr("", &ack_reply_hdr, &outgoing_pdu, 0)) {
950 DEBUG(0,("setup_cancel_ack_reply: marshalling of RPC_HDR failed.\n"));
951 prs_mem_free(&outgoing_pdu);
955 p->out_data.data_sent_length = 0;
956 p->out_data.current_pdu_len = prs_offset(&outgoing_pdu);
957 p->out_data.current_pdu_sent = 0;
959 prs_mem_free(&outgoing_pdu);
964 /*******************************************************************
965 Ensure a bind request has the correct abstract & transfer interface.
966 Used to reject unknown binds from Win2k.
967 *******************************************************************/
969 static bool check_bind_req(struct pipes_struct *p,
970 struct ndr_syntax_id* abstract,
971 struct ndr_syntax_id* transfer,
975 struct pipe_rpc_fns *context_fns;
977 DEBUG(3,("check_bind_req for %s\n",
978 get_pipe_name_from_iface(&p->syntax)));
980 /* we have to check all now since win2k introduced a new UUID on the lsaprpc pipe */
982 for (i=0; i<rpc_lookup_size; i++) {
983 DEBUGADD(10, ("checking %s\n", rpc_lookup[i].pipe.clnt));
984 if (ndr_syntax_id_equal(
985 abstract, &rpc_lookup[i].rpc_interface)
986 && ndr_syntax_id_equal(
987 transfer, &ndr_transfer_syntax)) {
992 if (i == rpc_lookup_size) {
996 context_fns = SMB_MALLOC_P(struct pipe_rpc_fns);
997 if (context_fns == NULL) {
998 DEBUG(0,("check_bind_req: malloc() failed!\n"));
1002 context_fns->cmds = rpc_lookup[i].cmds;
1003 context_fns->n_cmds = rpc_lookup[i].n_cmds;
1004 context_fns->context_id = context_id;
1006 /* add to the list of open contexts */
1008 DLIST_ADD( p->contexts, context_fns );
1013 /*******************************************************************
1014 Register commands to an RPC pipe
1015 *******************************************************************/
1017 NTSTATUS rpc_srv_register(int version, const char *clnt, const char *srv,
1018 const struct ndr_interface_table *iface,
1019 const struct api_struct *cmds, int size)
1021 struct rpc_table *rpc_entry;
1023 if (!clnt || !srv || !cmds) {
1024 return NT_STATUS_INVALID_PARAMETER;
1027 if (version != SMB_RPC_INTERFACE_VERSION) {
1028 DEBUG(0,("Can't register rpc commands!\n"
1029 "You tried to register a rpc module with SMB_RPC_INTERFACE_VERSION %d"
1030 ", while this version of samba uses version %d!\n",
1031 version,SMB_RPC_INTERFACE_VERSION));
1032 return NT_STATUS_OBJECT_TYPE_MISMATCH;
1037 * we still need to make sure that don't register the same commands twice!!!
1042 /* We use a temporary variable because this call can fail and
1043 rpc_lookup will still be valid afterwards. It could then succeed if
1044 called again later */
1046 rpc_entry = SMB_REALLOC_ARRAY_KEEP_OLD_ON_ERROR(rpc_lookup, struct rpc_table, rpc_lookup_size);
1047 if (NULL == rpc_entry) {
1049 DEBUG(0, ("rpc_pipe_register_commands: memory allocation failed\n"));
1050 return NT_STATUS_NO_MEMORY;
1052 rpc_lookup = rpc_entry;
1055 rpc_entry = rpc_lookup + (rpc_lookup_size - 1);
1056 ZERO_STRUCTP(rpc_entry);
1057 rpc_entry->pipe.clnt = SMB_STRDUP(clnt);
1058 rpc_entry->pipe.srv = SMB_STRDUP(srv);
1059 rpc_entry->rpc_interface = iface->syntax_id;
1060 rpc_entry->cmds = cmds;
1061 rpc_entry->n_cmds = size;
1063 return NT_STATUS_OK;
1067 * Is a named pipe known?
1068 * @param[in] cli_filename The pipe name requested by the client
1069 * @result Do we want to serve this?
1071 bool is_known_pipename(const char *cli_filename, struct ndr_syntax_id *syntax)
1073 const char *pipename = cli_filename;
1076 if (strnequal(pipename, "\\PIPE\\", 6)) {
1080 if (*pipename == '\\') {
1084 if (lp_disable_spoolss() && strequal(pipename, "spoolss")) {
1085 DEBUG(10, ("refusing spoolss access\n"));
1089 for (i=0; i<rpc_lookup_size; i++) {
1090 if (strequal(pipename, rpc_lookup[i].pipe.clnt)) {
1091 *syntax = rpc_lookup[i].rpc_interface;
1096 DEBUG(10, ("is_known_pipename: %s unknown\n", cli_filename));
1100 /*******************************************************************
1101 Handle a SPNEGO krb5 bind auth.
1102 *******************************************************************/
1104 static bool pipe_spnego_auth_bind_kerberos(pipes_struct *p, prs_struct *rpc_in_p, RPC_HDR_AUTH *pauth_info,
1105 DATA_BLOB *psecblob, prs_struct *pout_auth)
1110 /*******************************************************************
1111 Handle the first part of a SPNEGO bind auth.
1112 *******************************************************************/
1114 static bool pipe_spnego_auth_bind_negotiate(pipes_struct *p, prs_struct *rpc_in_p,
1115 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1121 char *OIDs[ASN1_MAX_OIDS];
1124 bool got_kerberos_mechanism = false;
1125 AUTH_NTLMSSP_STATE *a = NULL;
1126 RPC_HDR_AUTH auth_info;
1128 ZERO_STRUCT(secblob);
1130 ZERO_STRUCT(response);
1132 /* Grab the SPNEGO blob. */
1133 blob = data_blob(NULL,p->hdr.auth_len);
1135 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
1136 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to pull %u bytes - the SPNEGO auth header.\n",
1137 (unsigned int)p->hdr.auth_len ));
1141 if (blob.data[0] != ASN1_APPLICATION(0)) {
1145 /* parse out the OIDs and the first sec blob */
1146 if (!parse_negTokenTarg(blob, OIDs, &secblob)) {
1147 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to parse the security blob.\n"));
1151 if (strcmp(OID_KERBEROS5, OIDs[0]) == 0 || strcmp(OID_KERBEROS5_OLD, OIDs[0]) == 0) {
1152 got_kerberos_mechanism = true;
1155 for (i=0;OIDs[i];i++) {
1156 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got OID %s\n", OIDs[i]));
1157 TALLOC_FREE(OIDs[i]);
1159 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got secblob of size %lu\n", (unsigned long)secblob.length));
1161 if ( got_kerberos_mechanism && ((lp_security()==SEC_ADS) || USE_KERBEROS_KEYTAB) ) {
1162 bool ret = pipe_spnego_auth_bind_kerberos(p, rpc_in_p, pauth_info, &secblob, pout_auth);
1163 data_blob_free(&secblob);
1164 data_blob_free(&blob);
1168 if (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP && p->auth.a_u.auth_ntlmssp_state) {
1169 /* Free any previous auth type. */
1170 free_pipe_ntlmssp_auth_data(&p->auth);
1173 if (!got_kerberos_mechanism) {
1174 /* Initialize the NTLM engine. */
1175 status = auth_ntlmssp_start(&a);
1176 if (!NT_STATUS_IS_OK(status)) {
1181 * Pass the first security blob of data to it.
1182 * This can return an error or NT_STATUS_MORE_PROCESSING_REQUIRED
1183 * which means we need another packet to complete the bind.
1186 status = auth_ntlmssp_update(a, secblob, &chal);
1188 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1189 DEBUG(3,("pipe_spnego_auth_bind_negotiate: auth_ntlmssp_update failed.\n"));
1193 /* Generate the response blob we need for step 2 of the bind. */
1194 response = spnego_gen_auth_response(&chal, status, OID_NTLMSSP);
1197 * SPNEGO negotiate down to NTLMSSP. The subsequent
1198 * code to process follow-up packets is not complete
1201 response = spnego_gen_auth_response(NULL,
1202 NT_STATUS_MORE_PROCESSING_REQUIRED,
1206 /* Copy the blob into the pout_auth parse struct */
1207 init_rpc_hdr_auth(&auth_info, DCERPC_AUTH_TYPE_SPNEGO, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1208 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1209 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of RPC_HDR_AUTH failed.\n"));
1213 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1214 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of data blob failed.\n"));
1218 p->auth.a_u.auth_ntlmssp_state = a;
1219 p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
1220 p->auth.auth_type = PIPE_AUTH_TYPE_SPNEGO_NTLMSSP;
1222 data_blob_free(&blob);
1223 data_blob_free(&secblob);
1224 data_blob_free(&chal);
1225 data_blob_free(&response);
1227 /* We can't set pipe_bound True yet - we need an RPC_ALTER_CONTEXT response packet... */
1232 data_blob_free(&blob);
1233 data_blob_free(&secblob);
1234 data_blob_free(&chal);
1235 data_blob_free(&response);
1237 p->auth.a_u.auth_ntlmssp_state = NULL;
1242 /*******************************************************************
1243 Handle the second part of a SPNEGO bind auth.
1244 *******************************************************************/
1246 static bool pipe_spnego_auth_bind_continue(pipes_struct *p, prs_struct *rpc_in_p,
1247 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1249 RPC_HDR_AUTH auth_info;
1250 DATA_BLOB spnego_blob;
1251 DATA_BLOB auth_blob;
1252 DATA_BLOB auth_reply;
1254 AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
1256 ZERO_STRUCT(spnego_blob);
1257 ZERO_STRUCT(auth_blob);
1258 ZERO_STRUCT(auth_reply);
1259 ZERO_STRUCT(response);
1262 * NB. If we've negotiated down from krb5 to NTLMSSP we'll currently
1263 * fail here as 'a' == NULL.
1265 if (p->auth.auth_type != PIPE_AUTH_TYPE_SPNEGO_NTLMSSP || !a) {
1266 DEBUG(0,("pipe_spnego_auth_bind_continue: not in NTLMSSP auth state.\n"));
1270 /* Grab the SPNEGO blob. */
1271 spnego_blob = data_blob(NULL,p->hdr.auth_len);
1273 if (!prs_copy_data_out((char *)spnego_blob.data, rpc_in_p, p->hdr.auth_len)) {
1274 DEBUG(0,("pipe_spnego_auth_bind_continue: Failed to pull %u bytes - the SPNEGO auth header.\n",
1275 (unsigned int)p->hdr.auth_len ));
1279 if (spnego_blob.data[0] != ASN1_CONTEXT(1)) {
1280 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob type.\n"));
1284 if (!spnego_parse_auth(spnego_blob, &auth_blob)) {
1285 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob.\n"));
1290 * The following call actually checks the challenge/response data.
1291 * for correctness against the given DOMAIN\user name.
1294 if (!pipe_ntlmssp_verify_final(p, &auth_blob)) {
1298 data_blob_free(&spnego_blob);
1299 data_blob_free(&auth_blob);
1301 /* Generate the spnego "accept completed" blob - no incoming data. */
1302 response = spnego_gen_auth_response(&auth_reply, NT_STATUS_OK, OID_NTLMSSP);
1304 /* Copy the blob into the pout_auth parse struct */
1305 init_rpc_hdr_auth(&auth_info, DCERPC_AUTH_TYPE_SPNEGO, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1306 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1307 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of RPC_HDR_AUTH failed.\n"));
1311 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1312 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of data blob failed.\n"));
1316 data_blob_free(&auth_reply);
1317 data_blob_free(&response);
1319 p->pipe_bound = True;
1325 data_blob_free(&spnego_blob);
1326 data_blob_free(&auth_blob);
1327 data_blob_free(&auth_reply);
1328 data_blob_free(&response);
1330 free_pipe_ntlmssp_auth_data(&p->auth);
1331 p->auth.a_u.auth_ntlmssp_state = NULL;
1336 /*******************************************************************
1337 Handle an schannel bind auth.
1338 *******************************************************************/
1340 static bool pipe_schannel_auth_bind(pipes_struct *p, prs_struct *rpc_in_p,
1341 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1343 RPC_HDR_AUTH auth_info;
1344 struct NL_AUTH_MESSAGE neg;
1345 struct NL_AUTH_MESSAGE reply;
1348 struct netlogon_creds_CredentialState *creds;
1349 DATA_BLOB session_key;
1350 enum ndr_err_code ndr_err;
1353 blob = data_blob_const(prs_data_p(rpc_in_p) + prs_offset(rpc_in_p),
1354 prs_data_size(rpc_in_p));
1356 ndr_err = ndr_pull_struct_blob(&blob, talloc_tos(), NULL, &neg,
1357 (ndr_pull_flags_fn_t)ndr_pull_NL_AUTH_MESSAGE);
1358 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1359 DEBUG(0,("pipe_schannel_auth_bind: Could not unmarshal SCHANNEL auth neg\n"));
1363 if (DEBUGLEVEL >= 10) {
1364 NDR_PRINT_DEBUG(NL_AUTH_MESSAGE, &neg);
1367 if (!(neg.Flags & NL_FLAG_OEM_NETBIOS_COMPUTER_NAME)) {
1368 DEBUG(0,("pipe_schannel_auth_bind: Did not receive netbios computer name\n"));
1373 * The neg.oem_netbios_computer.a key here must match the remote computer name
1374 * given in the DOM_CLNT_SRV.uni_comp_name used on all netlogon pipe
1375 * operations that use credentials.
1379 status = schannel_fetch_session_key(p->mem_ctx,
1380 neg.oem_netbios_computer.a,
1384 if (!NT_STATUS_IS_OK(status)) {
1385 DEBUG(0, ("pipe_schannel_auth_bind: Attempt to bind using schannel without successful serverauth2\n"));
1389 p->auth.a_u.schannel_auth = talloc(p, struct schannel_auth_struct);
1390 if (!p->auth.a_u.schannel_auth) {
1395 memset(p->auth.a_u.schannel_auth->sess_key, 0, sizeof(p->auth.a_u.schannel_auth->sess_key));
1396 memcpy(p->auth.a_u.schannel_auth->sess_key, creds->session_key,
1397 sizeof(creds->session_key));
1401 p->auth.a_u.schannel_auth->seq_num = 0;
1404 * JRA. Should we also copy the schannel session key into the pipe session key p->session_key
1405 * here ? We do that for NTLMSSP, but the session key is already set up from the vuser
1406 * struct of the person who opened the pipe. I need to test this further. JRA.
1408 * VL. As we are mapping this to guest set the generic key
1409 * "SystemLibraryDTC" key here. It's a bit difficult to test against
1410 * W2k3, as it does not allow schannel binds against SAMR and LSA
1414 session_key = generic_session_key();
1415 if (session_key.data == NULL) {
1416 DEBUG(0, ("pipe_schannel_auth_bind: Could not alloc session"
1421 ret = server_info_set_session_key(p->server_info, session_key);
1423 data_blob_free(&session_key);
1426 DEBUG(0, ("server_info_set_session_key failed\n"));
1430 init_rpc_hdr_auth(&auth_info, DCERPC_AUTH_TYPE_SCHANNEL, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1431 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1432 DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1436 /*** SCHANNEL verifier ***/
1438 reply.MessageType = NL_NEGOTIATE_RESPONSE;
1440 reply.Buffer.dummy = 5; /* ??? actually I don't think
1441 * this has any meaning
1444 ndr_err = ndr_push_struct_blob(&blob, talloc_tos(), NULL, &reply,
1445 (ndr_push_flags_fn_t)ndr_push_NL_AUTH_MESSAGE);
1446 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1447 DEBUG(0,("Failed to marshall NL_AUTH_MESSAGE.\n"));
1451 if (DEBUGLEVEL >= 10) {
1452 NDR_PRINT_DEBUG(NL_AUTH_MESSAGE, &reply);
1455 if (!prs_copy_data_in(pout_auth, (const char *)blob.data, blob.length)) {
1459 DEBUG(10,("pipe_schannel_auth_bind: schannel auth: domain [%s] myname [%s]\n",
1460 neg.oem_netbios_domain.a, neg.oem_netbios_computer.a));
1462 /* We're finished with this bind - no more packets. */
1463 p->auth.auth_data_free_func = NULL;
1464 p->auth.auth_type = PIPE_AUTH_TYPE_SCHANNEL;
1466 p->pipe_bound = True;
1471 /*******************************************************************
1472 Handle an NTLMSSP bind auth.
1473 *******************************************************************/
1475 static bool pipe_ntlmssp_auth_bind(pipes_struct *p, prs_struct *rpc_in_p,
1476 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1478 RPC_HDR_AUTH auth_info;
1482 AUTH_NTLMSSP_STATE *a = NULL;
1485 ZERO_STRUCT(response);
1487 /* Grab the NTLMSSP blob. */
1488 blob = data_blob(NULL,p->hdr.auth_len);
1490 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
1491 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to pull %u bytes - the NTLM auth header.\n",
1492 (unsigned int)p->hdr.auth_len ));
1496 if (strncmp((char *)blob.data, "NTLMSSP", 7) != 0) {
1497 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to read NTLMSSP in blob\n"));
1501 /* We have an NTLMSSP blob. */
1502 status = auth_ntlmssp_start(&a);
1503 if (!NT_STATUS_IS_OK(status)) {
1504 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_start failed: %s\n",
1505 nt_errstr(status) ));
1509 status = auth_ntlmssp_update(a, blob, &response);
1510 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1511 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_update failed: %s\n",
1512 nt_errstr(status) ));
1516 data_blob_free(&blob);
1518 /* Copy the blob into the pout_auth parse struct */
1519 init_rpc_hdr_auth(&auth_info, DCERPC_AUTH_TYPE_NTLMSSP, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1520 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1521 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1525 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1526 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of data blob failed.\n"));
1530 p->auth.a_u.auth_ntlmssp_state = a;
1531 p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
1532 p->auth.auth_type = PIPE_AUTH_TYPE_NTLMSSP;
1534 data_blob_free(&blob);
1535 data_blob_free(&response);
1537 DEBUG(10,("pipe_ntlmssp_auth_bind: NTLMSSP auth started\n"));
1539 /* We can't set pipe_bound True yet - we need an RPC_AUTH3 response packet... */
1544 data_blob_free(&blob);
1545 data_blob_free(&response);
1547 free_pipe_ntlmssp_auth_data(&p->auth);
1548 p->auth.a_u.auth_ntlmssp_state = NULL;
1552 /*******************************************************************
1553 Respond to a pipe bind request.
1554 *******************************************************************/
1556 bool api_pipe_bind_req(pipes_struct *p, prs_struct *rpc_in_p)
1560 RPC_HDR_AUTH auth_info;
1562 fstring ack_pipe_name;
1563 prs_struct out_hdr_ba;
1564 prs_struct out_auth;
1567 unsigned int auth_type = DCERPC_AUTH_TYPE_NONE;
1569 /* No rebinds on a bound pipe - use alter context. */
1570 if (p->pipe_bound) {
1571 DEBUG(2,("api_pipe_bind_req: rejecting bind request on bound "
1572 "pipe %s.\n", get_pipe_name_from_iface(&p->syntax)));
1573 return setup_bind_nak(p);
1576 prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
1579 * Marshall directly into the outgoing PDU space. We
1580 * must do this as we need to set to the bind response
1581 * header and are never sending more than one PDU here.
1585 * Setup the memory to marshall the ba header, and the
1589 if(!prs_init(&out_hdr_ba, 1024, p->mem_ctx, MARSHALL)) {
1590 DEBUG(0,("api_pipe_bind_req: malloc out_hdr_ba failed.\n"));
1591 prs_mem_free(&p->out_data.frag);
1595 if(!prs_init(&out_auth, 1024, p->mem_ctx, MARSHALL)) {
1596 DEBUG(0,("api_pipe_bind_req: malloc out_auth failed.\n"));
1597 prs_mem_free(&p->out_data.frag);
1598 prs_mem_free(&out_hdr_ba);
1602 DEBUG(5,("api_pipe_bind_req: decode request. %d\n", __LINE__));
1604 ZERO_STRUCT(hdr_rb);
1606 /* decode the bind request */
1608 if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_in_p, 0)) {
1609 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_RB "
1614 if (hdr_rb.num_contexts == 0) {
1615 DEBUG(0, ("api_pipe_bind_req: no rpc contexts around\n"));
1620 * Try and find the correct pipe name to ensure
1621 * that this is a pipe name we support.
1624 for (i = 0; i < rpc_lookup_size; i++) {
1625 if (ndr_syntax_id_equal(&rpc_lookup[i].rpc_interface,
1626 &hdr_rb.rpc_context[0].abstract)) {
1627 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1628 rpc_lookup[i].pipe.clnt, rpc_lookup[i].pipe.srv));
1633 if (i == rpc_lookup_size) {
1636 status = smb_probe_module(
1637 "rpc", get_pipe_name_from_iface(
1638 &hdr_rb.rpc_context[0].abstract));
1640 if (NT_STATUS_IS_ERR(status)) {
1641 DEBUG(3,("api_pipe_bind_req: Unknown pipe name %s in bind request.\n",
1642 get_pipe_name_from_iface(&hdr_rb.rpc_context[0].abstract)));
1643 prs_mem_free(&p->out_data.frag);
1644 prs_mem_free(&out_hdr_ba);
1645 prs_mem_free(&out_auth);
1647 return setup_bind_nak(p);
1650 for (i = 0; i < rpc_lookup_size; i++) {
1651 if (strequal(rpc_lookup[i].pipe.clnt,
1652 get_pipe_name_from_iface(&p->syntax))) {
1653 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1654 rpc_lookup[i].pipe.clnt, rpc_lookup[i].pipe.srv));
1659 if (i == rpc_lookup_size) {
1660 DEBUG(0, ("module %s doesn't provide functions for "
1662 get_pipe_name_from_iface(&p->syntax),
1663 get_pipe_name_from_iface(&p->syntax)));
1668 /* name has to be \PIPE\xxxxx */
1669 fstrcpy(ack_pipe_name, "\\PIPE\\");
1670 fstrcat(ack_pipe_name, rpc_lookup[i].pipe.srv);
1672 DEBUG(5,("api_pipe_bind_req: make response. %d\n", __LINE__));
1675 * Check if this is an authenticated bind request.
1678 if (p->hdr.auth_len) {
1680 * Decode the authentication verifier.
1683 if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
1684 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1688 auth_type = auth_info.auth_type;
1690 /* Work out if we have to sign or seal etc. */
1691 switch (auth_info.auth_level) {
1692 case DCERPC_AUTH_LEVEL_INTEGRITY:
1693 p->auth.auth_level = DCERPC_AUTH_LEVEL_INTEGRITY;
1695 case DCERPC_AUTH_LEVEL_PRIVACY:
1696 p->auth.auth_level = DCERPC_AUTH_LEVEL_PRIVACY;
1699 DEBUG(0,("api_pipe_bind_req: unexpected auth level (%u).\n",
1700 (unsigned int)auth_info.auth_level ));
1704 ZERO_STRUCT(auth_info);
1707 assoc_gid = hdr_rb.bba.assoc_gid ? hdr_rb.bba.assoc_gid : 0x53f0;
1710 case DCERPC_AUTH_TYPE_NTLMSSP:
1711 if (!pipe_ntlmssp_auth_bind(p, rpc_in_p, &auth_info, &out_auth)) {
1717 case DCERPC_AUTH_TYPE_SCHANNEL:
1718 if (!pipe_schannel_auth_bind(p, rpc_in_p, &auth_info, &out_auth)) {
1723 case DCERPC_AUTH_TYPE_SPNEGO:
1724 if (!pipe_spnego_auth_bind_negotiate(p, rpc_in_p, &auth_info, &out_auth)) {
1729 case DCERPC_AUTH_TYPE_NONE:
1730 /* Unauthenticated bind request. */
1731 /* We're finished - no more packets. */
1732 p->auth.auth_type = PIPE_AUTH_TYPE_NONE;
1733 /* We must set the pipe auth_level here also. */
1734 p->auth.auth_level = DCERPC_AUTH_LEVEL_NONE;
1735 p->pipe_bound = True;
1736 /* The session key was initialized from the SMB
1737 * session in make_internal_rpc_pipe_p */
1741 DEBUG(0,("api_pipe_bind_req: unknown auth type %x requested.\n", auth_type ));
1746 * Create the bind response struct.
1749 /* If the requested abstract synt uuid doesn't match our client pipe,
1750 reject the bind_ack & set the transfer interface synt to all 0's,
1751 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1753 Needed when adding entries to a DACL from NT5 - SK */
1755 if(check_bind_req(p, &hdr_rb.rpc_context[0].abstract, &hdr_rb.rpc_context[0].transfer[0],
1756 hdr_rb.rpc_context[0].context_id )) {
1757 init_rpc_hdr_ba(&hdr_ba,
1758 RPC_MAX_PDU_FRAG_LEN,
1759 RPC_MAX_PDU_FRAG_LEN,
1763 &hdr_rb.rpc_context[0].transfer[0]);
1765 /* Rejection reason: abstract syntax not supported */
1766 init_rpc_hdr_ba(&hdr_ba, RPC_MAX_PDU_FRAG_LEN,
1767 RPC_MAX_PDU_FRAG_LEN, assoc_gid,
1768 ack_pipe_name, 0x1, 0x2, 0x1,
1769 &null_ndr_syntax_id);
1770 p->pipe_bound = False;
1777 if(!smb_io_rpc_hdr_ba("", &hdr_ba, &out_hdr_ba, 0)) {
1778 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR_BA failed.\n"));
1783 * Create the header, now we know the length.
1786 if (prs_offset(&out_auth)) {
1787 auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
1790 init_rpc_hdr(&p->hdr, RPC_BINDACK, RPC_FLG_FIRST | RPC_FLG_LAST,
1792 RPC_HEADER_LEN + prs_offset(&out_hdr_ba) + prs_offset(&out_auth),
1796 * Marshall the header into the outgoing PDU.
1799 if(!smb_io_rpc_hdr("", &p->hdr, &p->out_data.frag, 0)) {
1800 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR failed.\n"));
1805 * Now add the RPC_HDR_BA and any auth needed.
1808 if(!prs_append_prs_data(&p->out_data.frag, &out_hdr_ba)) {
1809 DEBUG(0,("api_pipe_bind_req: append of RPC_HDR_BA failed.\n"));
1813 if (auth_len && !prs_append_prs_data( &p->out_data.frag, &out_auth)) {
1814 DEBUG(0,("api_pipe_bind_req: append of auth info failed.\n"));
1819 * Setup the lengths for the initial reply.
1822 p->out_data.data_sent_length = 0;
1823 p->out_data.current_pdu_sent = 0;
1825 prs_mem_free(&out_hdr_ba);
1826 prs_mem_free(&out_auth);
1832 prs_mem_free(&p->out_data.frag);
1833 prs_mem_free(&out_hdr_ba);
1834 prs_mem_free(&out_auth);
1835 return setup_bind_nak(p);
1838 /****************************************************************************
1839 Deal with an alter context call. Can be third part of 3 leg auth request for
1841 ****************************************************************************/
1843 bool api_pipe_alter_context(pipes_struct *p, prs_struct *rpc_in_p)
1847 RPC_HDR_AUTH auth_info;
1849 fstring ack_pipe_name;
1850 prs_struct out_hdr_ba;
1851 prs_struct out_auth;
1854 prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
1857 * Marshall directly into the outgoing PDU space. We
1858 * must do this as we need to set to the bind response
1859 * header and are never sending more than one PDU here.
1863 * Setup the memory to marshall the ba header, and the
1867 if(!prs_init(&out_hdr_ba, 1024, p->mem_ctx, MARSHALL)) {
1868 DEBUG(0,("api_pipe_alter_context: malloc out_hdr_ba failed.\n"));
1869 prs_mem_free(&p->out_data.frag);
1873 if(!prs_init(&out_auth, 1024, p->mem_ctx, MARSHALL)) {
1874 DEBUG(0,("api_pipe_alter_context: malloc out_auth failed.\n"));
1875 prs_mem_free(&p->out_data.frag);
1876 prs_mem_free(&out_hdr_ba);
1880 ZERO_STRUCT(hdr_rb);
1882 DEBUG(5,("api_pipe_alter_context: decode request. %d\n", __LINE__));
1884 /* decode the alter context request */
1885 if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_in_p, 0)) {
1886 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_RB struct.\n"));
1890 /* secondary address CAN be NULL
1891 * as the specs say it's ignored.
1892 * It MUST be NULL to have the spoolss working.
1894 fstrcpy(ack_pipe_name,"");
1896 DEBUG(5,("api_pipe_alter_context: make response. %d\n", __LINE__));
1899 * Check if this is an authenticated alter context request.
1902 if (p->hdr.auth_len != 0) {
1904 * Decode the authentication verifier.
1907 if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
1908 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1913 * Currently only the SPNEGO auth type uses the alter ctx
1914 * response in place of the NTLMSSP auth3 type.
1917 if (auth_info.auth_type == DCERPC_AUTH_TYPE_SPNEGO) {
1918 /* We can only finish if the pipe is unbound. */
1919 if (!p->pipe_bound) {
1920 if (!pipe_spnego_auth_bind_continue(p, rpc_in_p, &auth_info, &out_auth)) {
1928 ZERO_STRUCT(auth_info);
1931 assoc_gid = hdr_rb.bba.assoc_gid ? hdr_rb.bba.assoc_gid : 0x53f0;
1934 * Create the bind response struct.
1937 /* If the requested abstract synt uuid doesn't match our client pipe,
1938 reject the bind_ack & set the transfer interface synt to all 0's,
1939 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1941 Needed when adding entries to a DACL from NT5 - SK */
1943 if(check_bind_req(p, &hdr_rb.rpc_context[0].abstract, &hdr_rb.rpc_context[0].transfer[0],
1944 hdr_rb.rpc_context[0].context_id )) {
1945 init_rpc_hdr_ba(&hdr_ba,
1946 RPC_MAX_PDU_FRAG_LEN,
1947 RPC_MAX_PDU_FRAG_LEN,
1951 &hdr_rb.rpc_context[0].transfer[0]);
1953 /* Rejection reason: abstract syntax not supported */
1954 init_rpc_hdr_ba(&hdr_ba, RPC_MAX_PDU_FRAG_LEN,
1955 RPC_MAX_PDU_FRAG_LEN, assoc_gid,
1956 ack_pipe_name, 0x1, 0x2, 0x1,
1957 &null_ndr_syntax_id);
1958 p->pipe_bound = False;
1965 if(!smb_io_rpc_hdr_ba("", &hdr_ba, &out_hdr_ba, 0)) {
1966 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR_BA failed.\n"));
1971 * Create the header, now we know the length.
1974 if (prs_offset(&out_auth)) {
1975 auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
1978 init_rpc_hdr(&p->hdr, RPC_ALTCONTRESP, RPC_FLG_FIRST | RPC_FLG_LAST,
1980 RPC_HEADER_LEN + prs_offset(&out_hdr_ba) + prs_offset(&out_auth),
1984 * Marshall the header into the outgoing PDU.
1987 if(!smb_io_rpc_hdr("", &p->hdr, &p->out_data.frag, 0)) {
1988 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR failed.\n"));
1993 * Now add the RPC_HDR_BA and any auth needed.
1996 if(!prs_append_prs_data(&p->out_data.frag, &out_hdr_ba)) {
1997 DEBUG(0,("api_pipe_alter_context: append of RPC_HDR_BA failed.\n"));
2001 if (auth_len && !prs_append_prs_data(&p->out_data.frag, &out_auth)) {
2002 DEBUG(0,("api_pipe_alter_context: append of auth info failed.\n"));
2007 * Setup the lengths for the initial reply.
2010 p->out_data.data_sent_length = 0;
2011 p->out_data.current_pdu_sent = 0;
2013 prs_mem_free(&out_hdr_ba);
2014 prs_mem_free(&out_auth);
2020 prs_mem_free(&p->out_data.frag);
2021 prs_mem_free(&out_hdr_ba);
2022 prs_mem_free(&out_auth);
2023 return setup_bind_nak(p);
2026 /****************************************************************************
2027 Deal with NTLMSSP sign & seal processing on an RPC request.
2028 ****************************************************************************/
2030 bool api_pipe_ntlmssp_auth_process(pipes_struct *p, prs_struct *rpc_in,
2031 uint32 *p_ss_padding_len, NTSTATUS *pstatus)
2033 RPC_HDR_AUTH auth_info;
2034 uint32 auth_len = p->hdr.auth_len;
2035 uint32 save_offset = prs_offset(rpc_in);
2036 AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
2037 unsigned char *data = NULL;
2039 unsigned char *full_packet_data = NULL;
2040 size_t full_packet_data_len;
2041 DATA_BLOB auth_blob;
2043 *pstatus = NT_STATUS_OK;
2045 if (p->auth.auth_level == DCERPC_AUTH_LEVEL_NONE || p->auth.auth_level == DCERPC_AUTH_LEVEL_CONNECT) {
2050 *pstatus = NT_STATUS_INVALID_PARAMETER;
2054 /* Ensure there's enough data for an authenticated request. */
2055 if ((auth_len > RPC_MAX_SIGN_SIZE) ||
2056 (RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_HDR_AUTH_LEN + auth_len > p->hdr.frag_len)) {
2057 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len %u is too large.\n",
2058 (unsigned int)auth_len ));
2059 *pstatus = NT_STATUS_INVALID_PARAMETER;
2064 * We need the full packet data + length (minus auth stuff) as well as the packet data + length
2065 * after the RPC header.
2066 * We need to pass in the full packet (minus auth len) to the NTLMSSP sign and check seal
2067 * functions as NTLMv2 checks the rpc headers also.
2070 data = (unsigned char *)(prs_data_p(rpc_in) + RPC_HDR_REQ_LEN);
2071 data_len = (size_t)(p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN - RPC_HDR_AUTH_LEN - auth_len);
2073 full_packet_data = p->in_data.current_in_pdu;
2074 full_packet_data_len = p->hdr.frag_len - auth_len;
2076 /* Pull the auth header and the following data into a blob. */
2077 if(!prs_set_offset(rpc_in, RPC_HDR_REQ_LEN + data_len)) {
2078 DEBUG(0,("api_pipe_ntlmssp_auth_process: cannot move offset to %u.\n",
2079 (unsigned int)RPC_HDR_REQ_LEN + (unsigned int)data_len ));
2080 *pstatus = NT_STATUS_INVALID_PARAMETER;
2084 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
2085 DEBUG(0,("api_pipe_ntlmssp_auth_process: failed to unmarshall RPC_HDR_AUTH.\n"));
2086 *pstatus = NT_STATUS_INVALID_PARAMETER;
2090 auth_blob.data = (unsigned char *)prs_data_p(rpc_in) + prs_offset(rpc_in);
2091 auth_blob.length = auth_len;
2093 switch (p->auth.auth_level) {
2094 case DCERPC_AUTH_LEVEL_PRIVACY:
2095 /* Data is encrypted. */
2096 *pstatus = ntlmssp_unseal_packet(a->ntlmssp_state,
2099 full_packet_data_len,
2101 if (!NT_STATUS_IS_OK(*pstatus)) {
2105 case DCERPC_AUTH_LEVEL_INTEGRITY:
2106 /* Data is signed. */
2107 *pstatus = ntlmssp_check_packet(a->ntlmssp_state,
2110 full_packet_data_len,
2112 if (!NT_STATUS_IS_OK(*pstatus)) {
2117 *pstatus = NT_STATUS_INVALID_PARAMETER;
2122 * Return the current pointer to the data offset.
2125 if(!prs_set_offset(rpc_in, save_offset)) {
2126 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
2127 (unsigned int)save_offset ));
2128 *pstatus = NT_STATUS_INVALID_PARAMETER;
2133 * Remember the padding length. We must remove it from the real data
2134 * stream once the sign/seal is done.
2137 *p_ss_padding_len = auth_info.auth_pad_len;
2142 /****************************************************************************
2143 Deal with schannel processing on an RPC request.
2144 ****************************************************************************/
2146 bool api_pipe_schannel_process(pipes_struct *p, prs_struct *rpc_in, uint32 *p_ss_padding_len)
2150 uint32 save_offset = prs_offset(rpc_in);
2151 RPC_HDR_AUTH auth_info;
2152 struct NL_AUTH_SIGNATURE schannel_chk;
2153 enum ndr_err_code ndr_err;
2156 auth_len = p->hdr.auth_len;
2158 if (auth_len < RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN ||
2159 auth_len > RPC_HEADER_LEN +
2163 DEBUG(0,("Incorrect auth_len %u.\n", (unsigned int)auth_len ));
2168 * The following is that length of the data we must verify or unseal.
2169 * This doesn't include the RPC headers or the auth_len or the RPC_HDR_AUTH_LEN
2170 * preceeding the auth_data.
2173 if (p->hdr.frag_len < RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_HDR_AUTH_LEN + auth_len) {
2174 DEBUG(0,("Incorrect frag %u, auth %u.\n",
2175 (unsigned int)p->hdr.frag_len,
2176 (unsigned int)auth_len ));
2180 data_len = p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN -
2181 RPC_HDR_AUTH_LEN - auth_len;
2183 DEBUG(5,("data %d auth %d\n", data_len, auth_len));
2185 if(!prs_set_offset(rpc_in, RPC_HDR_REQ_LEN + data_len)) {
2186 DEBUG(0,("cannot move offset to %u.\n",
2187 (unsigned int)RPC_HDR_REQ_LEN + data_len ));
2191 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
2192 DEBUG(0,("failed to unmarshall RPC_HDR_AUTH.\n"));
2196 if (auth_info.auth_type != DCERPC_AUTH_TYPE_SCHANNEL) {
2197 DEBUG(0,("Invalid auth info %d on schannel\n",
2198 auth_info.auth_type));
2202 blob = data_blob_const(prs_data_p(rpc_in) + prs_offset(rpc_in), auth_len);
2204 ndr_err = ndr_pull_struct_blob(&blob, talloc_tos(), NULL, &schannel_chk,
2205 (ndr_pull_flags_fn_t)ndr_pull_NL_AUTH_SIGNATURE);
2206 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
2207 DEBUG(0,("failed to pull NL_AUTH_SIGNATURE\n"));
2208 dump_data(2, blob.data, blob.length);
2212 if (DEBUGLEVEL >= 10) {
2213 NDR_PRINT_DEBUG(NL_AUTH_SIGNATURE, &schannel_chk);
2216 if (!schannel_decode(p->auth.a_u.schannel_auth,
2218 SENDER_IS_INITIATOR,
2220 prs_data_p(rpc_in)+RPC_HDR_REQ_LEN, data_len)) {
2221 DEBUG(3,("failed to decode PDU\n"));
2226 * Return the current pointer to the data offset.
2229 if(!prs_set_offset(rpc_in, save_offset)) {
2230 DEBUG(0,("failed to set offset back to %u\n",
2231 (unsigned int)save_offset ));
2235 /* The sequence number gets incremented on both send and receive. */
2236 p->auth.a_u.schannel_auth->seq_num++;
2239 * Remember the padding length. We must remove it from the real data
2240 * stream once the sign/seal is done.
2243 *p_ss_padding_len = auth_info.auth_pad_len;
2248 /****************************************************************************
2249 Find the set of RPC functions associated with this context_id
2250 ****************************************************************************/
2252 static PIPE_RPC_FNS* find_pipe_fns_by_context( PIPE_RPC_FNS *list, uint32 context_id )
2254 PIPE_RPC_FNS *fns = NULL;
2257 DEBUG(0,("find_pipe_fns_by_context: ERROR! No context list for pipe!\n"));
2261 for (fns=list; fns; fns=fns->next ) {
2262 if ( fns->context_id == context_id )
2268 /****************************************************************************
2270 ****************************************************************************/
2272 void free_pipe_rpc_context( PIPE_RPC_FNS *list )
2274 PIPE_RPC_FNS *tmp = list;
2286 static bool api_rpcTNP(pipes_struct *p,
2287 const struct api_struct *api_rpc_cmds, int n_cmds);
2289 /****************************************************************************
2290 Find the correct RPC function to call for this request.
2291 If the pipe is authenticated then become the correct UNIX user
2292 before doing the call.
2293 ****************************************************************************/
2295 bool api_pipe_request(pipes_struct *p)
2298 bool changed_user = False;
2299 PIPE_RPC_FNS *pipe_fns;
2301 if (p->pipe_bound &&
2302 ((p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP) ||
2303 (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP))) {
2304 if(!become_authenticated_pipe_user(p)) {
2305 prs_mem_free(&p->out_data.rdata);
2308 changed_user = True;
2311 DEBUG(5, ("Requested \\PIPE\\%s\n",
2312 get_pipe_name_from_iface(&p->syntax)));
2314 /* get the set of RPC functions for this context */
2316 pipe_fns = find_pipe_fns_by_context(p->contexts, p->hdr_req.context_id);
2319 TALLOC_CTX *frame = talloc_stackframe();
2320 ret = api_rpcTNP(p, pipe_fns->cmds, pipe_fns->n_cmds);
2324 DEBUG(0,("api_pipe_request: No rpc function table associated with context [%d] on pipe [%s]\n",
2325 p->hdr_req.context_id,
2326 get_pipe_name_from_iface(&p->syntax)));
2330 unbecome_authenticated_pipe_user();
2336 /*******************************************************************
2337 Calls the underlying RPC function for a named pipe.
2338 ********************************************************************/
2340 static bool api_rpcTNP(pipes_struct *p,
2341 const struct api_struct *api_rpc_cmds, int n_cmds)
2344 uint32 offset1, offset2;
2346 /* interpret the command */
2347 DEBUG(4,("api_rpcTNP: %s op 0x%x - ",
2348 get_pipe_name_from_iface(&p->syntax), p->hdr_req.opnum));
2350 if (DEBUGLEVEL >= 50) {
2352 slprintf(name, sizeof(name)-1, "in_%s",
2353 get_pipe_name_from_iface(&p->syntax));
2354 prs_dump(name, p->hdr_req.opnum, &p->in_data.data);
2357 for (fn_num = 0; fn_num < n_cmds; fn_num++) {
2358 if (api_rpc_cmds[fn_num].opnum == p->hdr_req.opnum && api_rpc_cmds[fn_num].fn != NULL) {
2359 DEBUG(3,("api_rpcTNP: rpc command: %s\n", api_rpc_cmds[fn_num].name));
2364 if (fn_num == n_cmds) {
2366 * For an unknown RPC just return a fault PDU but
2367 * return True to allow RPC's on the pipe to continue
2368 * and not put the pipe into fault state. JRA.
2370 DEBUG(4, ("unknown\n"));
2371 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
2375 offset1 = prs_offset(&p->out_data.rdata);
2377 DEBUG(6, ("api_rpc_cmds[%d].fn == %p\n",
2378 fn_num, api_rpc_cmds[fn_num].fn));
2379 /* do the actual command */
2380 if(!api_rpc_cmds[fn_num].fn(p)) {
2381 DEBUG(0,("api_rpcTNP: %s: %s failed.\n",
2382 get_pipe_name_from_iface(&p->syntax),
2383 api_rpc_cmds[fn_num].name));
2384 prs_mem_free(&p->out_data.rdata);
2388 if (p->bad_handle_fault_state) {
2389 DEBUG(4,("api_rpcTNP: bad handle fault return.\n"));
2390 p->bad_handle_fault_state = False;
2391 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_CONTEXT_MISMATCH));
2395 if (p->rng_fault_state) {
2396 DEBUG(4, ("api_rpcTNP: rng fault return\n"));
2397 p->rng_fault_state = False;
2398 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
2402 offset2 = prs_offset(&p->out_data.rdata);
2403 prs_set_offset(&p->out_data.rdata, offset1);
2404 if (DEBUGLEVEL >= 50) {
2406 slprintf(name, sizeof(name)-1, "out_%s",
2407 get_pipe_name_from_iface(&p->syntax));
2408 prs_dump(name, p->hdr_req.opnum, &p->out_data.rdata);
2410 prs_set_offset(&p->out_data.rdata, offset2);
2412 DEBUG(5,("api_rpcTNP: called %s successfully\n",
2413 get_pipe_name_from_iface(&p->syntax)));
2415 /* Check for buffer underflow in rpc parsing */
2417 if ((DEBUGLEVEL >= 10) &&
2418 (prs_offset(&p->in_data.data) != prs_data_size(&p->in_data.data))) {
2419 size_t data_len = prs_data_size(&p->in_data.data) - prs_offset(&p->in_data.data);
2420 char *data = (char *)SMB_MALLOC(data_len);
2422 DEBUG(10, ("api_rpcTNP: rpc input buffer underflow (parse error?)\n"));
2424 prs_uint8s(False, "", &p->in_data.data, 0, (unsigned char *)data, (uint32)data_len);