2 * Unix SMB/CIFS implementation.
3 * RPC Pipe client / server routines
4 * Almost completely rewritten by (C) Jeremy Allison 2005.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
20 /* this module apparently provides an implementation of DCE/RPC over a
21 * named pipe (IPC$ connection using SMBtrans). details of DCE/RPC
22 * documentation are available (in on-line form) from the X-Open group.
24 * this module should provide a level of abstraction between SMB
25 * and DCE/RPC, while minimising the amount of mallocs, unnecessary
26 * data copies, and network traffic.
32 extern struct pipe_id_info pipe_names[];
33 extern struct current_user current_user;
36 #define DBGC_CLASS DBGC_RPC_SRV
38 static void free_pipe_ntlmssp_auth_data(struct pipe_auth_data *auth)
40 AUTH_NTLMSSP_STATE *a = auth->a_u.auth_ntlmssp_state;
45 auth->a_u.auth_ntlmssp_state = NULL;
48 static DATA_BLOB generic_session_key(void)
50 return data_blob("SystemLibraryDTC", 16);
53 /*******************************************************************
54 Generate the next PDU to be returned from the data in p->rdata.
56 ********************************************************************/
58 static bool create_next_pdu_ntlmssp(pipes_struct *p)
60 RPC_HDR_RESP hdr_resp;
61 uint32 ss_padding_len = 0;
62 uint32 data_space_available;
65 prs_struct outgoing_pdu;
68 RPC_HDR_AUTH auth_info;
69 uint8 auth_type, auth_level;
70 AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
73 * If we're in the fault state, keep returning fault PDU's until
74 * the pipe gets closed. JRA.
78 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
82 memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
84 /* Change the incoming request header to a response. */
85 p->hdr.pkt_type = RPC_RESPONSE;
87 /* Set up rpc header flags. */
88 if (p->out_data.data_sent_length == 0) {
89 p->hdr.flags = RPC_FLG_FIRST;
95 * Work out how much we can fit in a single PDU.
98 data_len_left = prs_offset(&p->out_data.rdata) - p->out_data.data_sent_length;
101 * Ensure there really is data left to send.
105 DEBUG(0,("create_next_pdu_ntlmssp: no data left to send !\n"));
109 data_space_available = sizeof(p->out_data.current_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN -
110 RPC_HDR_AUTH_LEN - NTLMSSP_SIG_SIZE;
113 * The amount we send is the minimum of the available
114 * space and the amount left to send.
117 data_len = MIN(data_len_left, data_space_available);
120 * Set up the alloc hint. This should be the data left to
124 hdr_resp.alloc_hint = data_len_left;
127 * Work out if this PDU will be the last.
130 if(p->out_data.data_sent_length + data_len >= prs_offset(&p->out_data.rdata)) {
131 p->hdr.flags |= RPC_FLG_LAST;
132 if (data_len_left % 8) {
133 ss_padding_len = 8 - (data_len_left % 8);
134 DEBUG(10,("create_next_pdu_ntlmssp: adding sign/seal padding of %u\n",
140 * Set up the header lengths.
143 p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN +
144 data_len + ss_padding_len +
145 RPC_HDR_AUTH_LEN + NTLMSSP_SIG_SIZE;
146 p->hdr.auth_len = NTLMSSP_SIG_SIZE;
150 * Init the parse struct to point at the outgoing
154 prs_init_empty( &outgoing_pdu, p->mem_ctx, MARSHALL);
155 prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
157 /* Store the header in the data stream. */
158 if(!smb_io_rpc_hdr("hdr", &p->hdr, &outgoing_pdu, 0)) {
159 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR.\n"));
160 prs_mem_free(&outgoing_pdu);
164 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &outgoing_pdu, 0)) {
165 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_RESP.\n"));
166 prs_mem_free(&outgoing_pdu);
170 /* Copy the data into the PDU. */
172 if(!prs_append_some_prs_data(&outgoing_pdu, &p->out_data.rdata, p->out_data.data_sent_length, data_len)) {
173 DEBUG(0,("create_next_pdu_ntlmssp: failed to copy %u bytes of data.\n", (unsigned int)data_len));
174 prs_mem_free(&outgoing_pdu);
178 /* Copy the sign/seal padding data. */
179 if (ss_padding_len) {
182 memset(pad, '\0', 8);
183 if (!prs_copy_data_in(&outgoing_pdu, pad, ss_padding_len)) {
184 DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes of pad data.\n",
185 (unsigned int)ss_padding_len));
186 prs_mem_free(&outgoing_pdu);
192 /* Now write out the auth header and null blob. */
193 if (p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP) {
194 auth_type = RPC_NTLMSSP_AUTH_TYPE;
196 auth_type = RPC_SPNEGO_AUTH_TYPE;
198 if (p->auth.auth_level == PIPE_AUTH_LEVEL_PRIVACY) {
199 auth_level = RPC_AUTH_LEVEL_PRIVACY;
201 auth_level = RPC_AUTH_LEVEL_INTEGRITY;
204 init_rpc_hdr_auth(&auth_info, auth_type, auth_level, ss_padding_len, 1 /* context id. */);
205 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, &outgoing_pdu, 0)) {
206 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_AUTH.\n"));
207 prs_mem_free(&outgoing_pdu);
211 /* Generate the sign blob. */
213 switch (p->auth.auth_level) {
214 case PIPE_AUTH_LEVEL_PRIVACY:
215 /* Data portion is encrypted. */
216 status = ntlmssp_seal_packet(a->ntlmssp_state,
217 (unsigned char *)prs_data_p(&outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
218 data_len + ss_padding_len,
219 (unsigned char *)prs_data_p(&outgoing_pdu),
220 (size_t)prs_offset(&outgoing_pdu),
222 if (!NT_STATUS_IS_OK(status)) {
223 data_blob_free(&auth_blob);
224 prs_mem_free(&outgoing_pdu);
228 case PIPE_AUTH_LEVEL_INTEGRITY:
229 /* Data is signed. */
230 status = ntlmssp_sign_packet(a->ntlmssp_state,
231 (unsigned char *)prs_data_p(&outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
232 data_len + ss_padding_len,
233 (unsigned char *)prs_data_p(&outgoing_pdu),
234 (size_t)prs_offset(&outgoing_pdu),
236 if (!NT_STATUS_IS_OK(status)) {
237 data_blob_free(&auth_blob);
238 prs_mem_free(&outgoing_pdu);
243 prs_mem_free(&outgoing_pdu);
247 /* Append the auth blob. */
248 if (!prs_copy_data_in(&outgoing_pdu, (char *)auth_blob.data, NTLMSSP_SIG_SIZE)) {
249 DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes auth blob.\n",
250 (unsigned int)NTLMSSP_SIG_SIZE));
251 data_blob_free(&auth_blob);
252 prs_mem_free(&outgoing_pdu);
256 data_blob_free(&auth_blob);
259 * Setup the counts for this PDU.
262 p->out_data.data_sent_length += data_len;
263 p->out_data.current_pdu_len = p->hdr.frag_len;
264 p->out_data.current_pdu_sent = 0;
266 prs_mem_free(&outgoing_pdu);
270 /*******************************************************************
271 Generate the next PDU to be returned from the data in p->rdata.
272 Return an schannel authenticated fragment.
273 ********************************************************************/
275 static bool create_next_pdu_schannel(pipes_struct *p)
277 RPC_HDR_RESP hdr_resp;
278 uint32 ss_padding_len = 0;
280 uint32 data_space_available;
281 uint32 data_len_left;
282 prs_struct outgoing_pdu;
286 * If we're in the fault state, keep returning fault PDU's until
287 * the pipe gets closed. JRA.
291 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
295 memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
297 /* Change the incoming request header to a response. */
298 p->hdr.pkt_type = RPC_RESPONSE;
300 /* Set up rpc header flags. */
301 if (p->out_data.data_sent_length == 0) {
302 p->hdr.flags = RPC_FLG_FIRST;
308 * Work out how much we can fit in a single PDU.
311 data_len_left = prs_offset(&p->out_data.rdata) - p->out_data.data_sent_length;
314 * Ensure there really is data left to send.
318 DEBUG(0,("create_next_pdu_schannel: no data left to send !\n"));
322 data_space_available = sizeof(p->out_data.current_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN -
323 RPC_HDR_AUTH_LEN - RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
326 * The amount we send is the minimum of the available
327 * space and the amount left to send.
330 data_len = MIN(data_len_left, data_space_available);
333 * Set up the alloc hint. This should be the data left to
337 hdr_resp.alloc_hint = data_len_left;
340 * Work out if this PDU will be the last.
343 if(p->out_data.data_sent_length + data_len >= prs_offset(&p->out_data.rdata)) {
344 p->hdr.flags |= RPC_FLG_LAST;
345 if (data_len_left % 8) {
346 ss_padding_len = 8 - (data_len_left % 8);
347 DEBUG(10,("create_next_pdu_schannel: adding sign/seal padding of %u\n",
352 p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len + ss_padding_len +
353 RPC_HDR_AUTH_LEN + RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
354 p->hdr.auth_len = RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
357 * Init the parse struct to point at the outgoing
361 prs_init_empty( &outgoing_pdu, p->mem_ctx, MARSHALL);
362 prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
364 /* Store the header in the data stream. */
365 if(!smb_io_rpc_hdr("hdr", &p->hdr, &outgoing_pdu, 0)) {
366 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR.\n"));
367 prs_mem_free(&outgoing_pdu);
371 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &outgoing_pdu, 0)) {
372 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_RESP.\n"));
373 prs_mem_free(&outgoing_pdu);
377 /* Store the current offset. */
378 data_pos = prs_offset(&outgoing_pdu);
380 /* Copy the data into the PDU. */
382 if(!prs_append_some_prs_data(&outgoing_pdu, &p->out_data.rdata, p->out_data.data_sent_length, data_len)) {
383 DEBUG(0,("create_next_pdu_schannel: failed to copy %u bytes of data.\n", (unsigned int)data_len));
384 prs_mem_free(&outgoing_pdu);
388 /* Copy the sign/seal padding data. */
389 if (ss_padding_len) {
391 memset(pad, '\0', 8);
392 if (!prs_copy_data_in(&outgoing_pdu, pad, ss_padding_len)) {
393 DEBUG(0,("create_next_pdu_schannel: failed to add %u bytes of pad data.\n", (unsigned int)ss_padding_len));
394 prs_mem_free(&outgoing_pdu);
401 * Schannel processing.
404 RPC_HDR_AUTH auth_info;
405 RPC_AUTH_SCHANNEL_CHK verf;
407 data = prs_data_p(&outgoing_pdu) + data_pos;
408 /* Check it's the type of reply we were expecting to decode */
410 init_rpc_hdr_auth(&auth_info,
411 RPC_SCHANNEL_AUTH_TYPE,
412 p->auth.auth_level == PIPE_AUTH_LEVEL_PRIVACY ?
413 RPC_AUTH_LEVEL_PRIVACY : RPC_AUTH_LEVEL_INTEGRITY,
416 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, &outgoing_pdu, 0)) {
417 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_AUTH.\n"));
418 prs_mem_free(&outgoing_pdu);
422 schannel_encode(p->auth.a_u.schannel_auth,
425 &verf, data, data_len + ss_padding_len);
427 if (!smb_io_rpc_auth_schannel_chk("", RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN,
428 &verf, &outgoing_pdu, 0)) {
429 prs_mem_free(&outgoing_pdu);
433 p->auth.a_u.schannel_auth->seq_num++;
437 * Setup the counts for this PDU.
440 p->out_data.data_sent_length += data_len;
441 p->out_data.current_pdu_len = p->hdr.frag_len;
442 p->out_data.current_pdu_sent = 0;
444 prs_mem_free(&outgoing_pdu);
448 /*******************************************************************
449 Generate the next PDU to be returned from the data in p->rdata.
450 No authentication done.
451 ********************************************************************/
453 static bool create_next_pdu_noauth(pipes_struct *p)
455 RPC_HDR_RESP hdr_resp;
457 uint32 data_space_available;
458 uint32 data_len_left;
459 prs_struct outgoing_pdu;
462 * If we're in the fault state, keep returning fault PDU's until
463 * the pipe gets closed. JRA.
467 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
471 memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
473 /* Change the incoming request header to a response. */
474 p->hdr.pkt_type = RPC_RESPONSE;
476 /* Set up rpc header flags. */
477 if (p->out_data.data_sent_length == 0) {
478 p->hdr.flags = RPC_FLG_FIRST;
484 * Work out how much we can fit in a single PDU.
487 data_len_left = prs_offset(&p->out_data.rdata) - p->out_data.data_sent_length;
490 * Ensure there really is data left to send.
494 DEBUG(0,("create_next_pdu_noath: no data left to send !\n"));
498 data_space_available = sizeof(p->out_data.current_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN;
501 * The amount we send is the minimum of the available
502 * space and the amount left to send.
505 data_len = MIN(data_len_left, data_space_available);
508 * Set up the alloc hint. This should be the data left to
512 hdr_resp.alloc_hint = data_len_left;
515 * Work out if this PDU will be the last.
518 if(p->out_data.data_sent_length + data_len >= prs_offset(&p->out_data.rdata)) {
519 p->hdr.flags |= RPC_FLG_LAST;
523 * Set up the header lengths.
526 p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len;
530 * Init the parse struct to point at the outgoing
534 prs_init_empty( &outgoing_pdu, p->mem_ctx, MARSHALL);
535 prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
537 /* Store the header in the data stream. */
538 if(!smb_io_rpc_hdr("hdr", &p->hdr, &outgoing_pdu, 0)) {
539 DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR.\n"));
540 prs_mem_free(&outgoing_pdu);
544 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &outgoing_pdu, 0)) {
545 DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR_RESP.\n"));
546 prs_mem_free(&outgoing_pdu);
550 /* Copy the data into the PDU. */
552 if(!prs_append_some_prs_data(&outgoing_pdu, &p->out_data.rdata, p->out_data.data_sent_length, data_len)) {
553 DEBUG(0,("create_next_pdu_noauth: failed to copy %u bytes of data.\n", (unsigned int)data_len));
554 prs_mem_free(&outgoing_pdu);
559 * Setup the counts for this PDU.
562 p->out_data.data_sent_length += data_len;
563 p->out_data.current_pdu_len = p->hdr.frag_len;
564 p->out_data.current_pdu_sent = 0;
566 prs_mem_free(&outgoing_pdu);
570 /*******************************************************************
571 Generate the next PDU to be returned from the data in p->rdata.
572 ********************************************************************/
574 bool create_next_pdu(pipes_struct *p)
576 switch(p->auth.auth_level) {
577 case PIPE_AUTH_LEVEL_NONE:
578 case PIPE_AUTH_LEVEL_CONNECT:
579 /* This is incorrect for auth level connect. Fixme. JRA */
580 return create_next_pdu_noauth(p);
583 switch(p->auth.auth_type) {
584 case PIPE_AUTH_TYPE_NTLMSSP:
585 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
586 return create_next_pdu_ntlmssp(p);
587 case PIPE_AUTH_TYPE_SCHANNEL:
588 return create_next_pdu_schannel(p);
594 DEBUG(0,("create_next_pdu: invalid internal auth level %u / type %u",
595 (unsigned int)p->auth.auth_level,
596 (unsigned int)p->auth.auth_type));
600 /*******************************************************************
601 Process an NTLMSSP authentication response.
602 If this function succeeds, the user has been authenticated
603 and their domain, name and calling workstation stored in
605 *******************************************************************/
607 static bool pipe_ntlmssp_verify_final(pipes_struct *p, DATA_BLOB *p_resp_blob)
611 AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
613 DEBUG(5,("pipe_ntlmssp_verify_final: pipe %s checking user details\n", p->name));
617 /* Set up for non-authenticated user. */
618 TALLOC_FREE(p->pipe_user.nt_user_token);
619 p->pipe_user.ut.ngroups = 0;
620 SAFE_FREE( p->pipe_user.ut.groups);
622 /* this has to be done as root in order to verify the password */
624 status = auth_ntlmssp_update(a, *p_resp_blob, &reply);
627 /* Don't generate a reply. */
628 data_blob_free(&reply);
630 if (!NT_STATUS_IS_OK(status)) {
634 /* Finally - if the pipe negotiated integrity (sign) or privacy (seal)
635 ensure the underlying NTLMSSP flags are also set. If not we should
638 if (p->auth.auth_level == PIPE_AUTH_LEVEL_INTEGRITY) {
639 if (!(a->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN)) {
640 DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet integrity requested "
641 "but client declined signing.\n",
646 if (p->auth.auth_level == PIPE_AUTH_LEVEL_PRIVACY) {
647 if (!(a->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL)) {
648 DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet privacy requested "
649 "but client declined sealing.\n",
655 DEBUG(5, ("pipe_ntlmssp_verify_final: OK: user: %s domain: %s "
656 "workstation: %s\n", a->ntlmssp_state->user,
657 a->ntlmssp_state->domain, a->ntlmssp_state->workstation));
660 * Store the UNIX credential data (uid/gid pair) in the pipe structure.
663 p->pipe_user.ut.uid = a->server_info->uid;
664 p->pipe_user.ut.gid = a->server_info->gid;
667 * We're an authenticated bind over smbd, so the session key needs to
668 * be set to "SystemLibraryDTC". Weird, but this is what Windows
669 * does. See the RPC-SAMBA3SESSIONKEY.
672 data_blob_free(&p->session_key);
673 p->session_key = generic_session_key();
674 if (!p->session_key.data) {
678 p->pipe_user.ut.ngroups = a->server_info->n_groups;
679 if (p->pipe_user.ut.ngroups) {
680 if (!(p->pipe_user.ut.groups = (gid_t *)memdup(a->server_info->groups,
681 sizeof(gid_t) * p->pipe_user.ut.ngroups))) {
682 DEBUG(0,("failed to memdup group list to p->pipe_user.groups\n"));
687 if (a->server_info->ptok) {
688 p->pipe_user.nt_user_token =
689 dup_nt_token(NULL, a->server_info->ptok);
691 DEBUG(1,("Error: Authmodule failed to provide nt_user_token\n"));
692 p->pipe_user.nt_user_token = NULL;
699 /*******************************************************************
700 The switch table for the pipe names and the functions to handle them.
701 *******************************************************************/
708 const struct api_struct *cmds;
712 static struct rpc_table *rpc_lookup;
713 static int rpc_lookup_size;
715 /*******************************************************************
716 This is the "stage3" NTLMSSP response after a bind request and reply.
717 *******************************************************************/
719 bool api_pipe_bind_auth3(pipes_struct *p, prs_struct *rpc_in_p)
721 RPC_HDR_AUTH auth_info;
727 DEBUG(5,("api_pipe_bind_auth3: decode request. %d\n", __LINE__));
729 if (p->hdr.auth_len == 0) {
730 DEBUG(0,("api_pipe_bind_auth3: No auth field sent !\n"));
734 /* 4 bytes padding. */
735 if (!prs_uint32("pad", rpc_in_p, 0, &pad)) {
736 DEBUG(0,("api_pipe_bind_auth3: unmarshall of 4 byte pad failed.\n"));
741 * Decode the authentication verifier response.
744 if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
745 DEBUG(0,("api_pipe_bind_auth3: unmarshall of RPC_HDR_AUTH failed.\n"));
749 if (auth_info.auth_type != RPC_NTLMSSP_AUTH_TYPE) {
750 DEBUG(0,("api_pipe_bind_auth3: incorrect auth type (%u).\n",
751 (unsigned int)auth_info.auth_type ));
755 blob = data_blob(NULL,p->hdr.auth_len);
757 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
758 DEBUG(0,("api_pipe_bind_auth3: Failed to pull %u bytes - the response blob.\n",
759 (unsigned int)p->hdr.auth_len ));
764 * The following call actually checks the challenge/response data.
765 * for correctness against the given DOMAIN\user name.
768 if (!pipe_ntlmssp_verify_final(p, &blob)) {
772 data_blob_free(&blob);
774 p->pipe_bound = True;
780 data_blob_free(&blob);
781 free_pipe_ntlmssp_auth_data(&p->auth);
782 p->auth.a_u.auth_ntlmssp_state = NULL;
787 /*******************************************************************
788 Marshall a bind_nak pdu.
789 *******************************************************************/
791 static bool setup_bind_nak(pipes_struct *p)
793 prs_struct outgoing_rpc;
797 /* Free any memory in the current return data buffer. */
798 prs_mem_free(&p->out_data.rdata);
801 * Marshall directly into the outgoing PDU space. We
802 * must do this as we need to set to the bind response
803 * header and are never sending more than one PDU here.
806 prs_init_empty( &outgoing_rpc, p->mem_ctx, MARSHALL);
807 prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
810 * Initialize a bind_nak header.
813 init_rpc_hdr(&nak_hdr, RPC_BINDNACK, RPC_FLG_FIRST | RPC_FLG_LAST,
814 p->hdr.call_id, RPC_HEADER_LEN + sizeof(uint16), 0);
817 * Marshall the header into the outgoing PDU.
820 if(!smb_io_rpc_hdr("", &nak_hdr, &outgoing_rpc, 0)) {
821 DEBUG(0,("setup_bind_nak: marshalling of RPC_HDR failed.\n"));
822 prs_mem_free(&outgoing_rpc);
827 * Now add the reject reason.
830 if(!prs_uint16("reject code", &outgoing_rpc, 0, &zero)) {
831 prs_mem_free(&outgoing_rpc);
835 p->out_data.data_sent_length = 0;
836 p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
837 p->out_data.current_pdu_sent = 0;
839 if (p->auth.auth_data_free_func) {
840 (*p->auth.auth_data_free_func)(&p->auth);
842 p->auth.auth_level = PIPE_AUTH_LEVEL_NONE;
843 p->auth.auth_type = PIPE_AUTH_TYPE_NONE;
844 p->pipe_bound = False;
849 /*******************************************************************
850 Marshall a fault pdu.
851 *******************************************************************/
853 bool setup_fault_pdu(pipes_struct *p, NTSTATUS status)
855 prs_struct outgoing_pdu;
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( &outgoing_pdu, p->mem_ctx, MARSHALL);
870 prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
873 * Initialize a fault header.
876 init_rpc_hdr(&fault_hdr, RPC_FAULT, RPC_FLG_FIRST | RPC_FLG_LAST | RPC_FLG_NOCALL,
877 p->hdr.call_id, RPC_HEADER_LEN + RPC_HDR_RESP_LEN + RPC_HDR_FAULT_LEN, 0);
880 * Initialize the HDR_RESP and FAULT parts of the PDU.
883 memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
885 fault_resp.status = status;
886 fault_resp.reserved = 0;
889 * Marshall the header into the outgoing PDU.
892 if(!smb_io_rpc_hdr("", &fault_hdr, &outgoing_pdu, 0)) {
893 DEBUG(0,("setup_fault_pdu: marshalling of RPC_HDR failed.\n"));
894 prs_mem_free(&outgoing_pdu);
898 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &outgoing_pdu, 0)) {
899 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_RESP.\n"));
900 prs_mem_free(&outgoing_pdu);
904 if(!smb_io_rpc_hdr_fault("fault", &fault_resp, &outgoing_pdu, 0)) {
905 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_FAULT.\n"));
906 prs_mem_free(&outgoing_pdu);
910 p->out_data.data_sent_length = 0;
911 p->out_data.current_pdu_len = prs_offset(&outgoing_pdu);
912 p->out_data.current_pdu_sent = 0;
914 prs_mem_free(&outgoing_pdu);
919 /*******************************************************************
920 Marshall a cancel_ack pdu.
921 We should probably check the auth-verifier here.
922 *******************************************************************/
924 bool setup_cancel_ack_reply(pipes_struct *p, prs_struct *rpc_in_p)
926 prs_struct outgoing_pdu;
927 RPC_HDR ack_reply_hdr;
929 /* Free any memory in the current return data buffer. */
930 prs_mem_free(&p->out_data.rdata);
933 * Marshall directly into the outgoing PDU space. We
934 * must do this as we need to set to the bind response
935 * header and are never sending more than one PDU here.
938 prs_init_empty( &outgoing_pdu, p->mem_ctx, MARSHALL);
939 prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
942 * Initialize a cancel_ack header.
945 init_rpc_hdr(&ack_reply_hdr, RPC_CANCEL_ACK, RPC_FLG_FIRST | RPC_FLG_LAST,
946 p->hdr.call_id, RPC_HEADER_LEN, 0);
949 * Marshall the header into the outgoing PDU.
952 if(!smb_io_rpc_hdr("", &ack_reply_hdr, &outgoing_pdu, 0)) {
953 DEBUG(0,("setup_cancel_ack_reply: marshalling of RPC_HDR failed.\n"));
954 prs_mem_free(&outgoing_pdu);
958 p->out_data.data_sent_length = 0;
959 p->out_data.current_pdu_len = prs_offset(&outgoing_pdu);
960 p->out_data.current_pdu_sent = 0;
962 prs_mem_free(&outgoing_pdu);
967 /*******************************************************************
968 Ensure a bind request has the correct abstract & transfer interface.
969 Used to reject unknown binds from Win2k.
970 *******************************************************************/
972 bool check_bind_req(struct pipes_struct *p, RPC_IFACE* abstract,
973 RPC_IFACE* transfer, uint32 context_id)
975 char *pipe_name = p->name;
979 fstrcpy(pname,"\\PIPE\\");
980 fstrcat(pname,pipe_name);
982 DEBUG(3,("check_bind_req for %s\n", pname));
984 /* we have to check all now since win2k introduced a new UUID on the lsaprpc pipe */
986 for ( i=0; pipe_names[i].client_pipe; i++ ) {
987 DEBUGADD(10,("checking %s\n", pipe_names[i].client_pipe));
988 if ( strequal(pipe_names[i].client_pipe, pname)
989 && (abstract->if_version == pipe_names[i].abstr_syntax.if_version)
990 && (memcmp(&abstract->uuid, &pipe_names[i].abstr_syntax.uuid, sizeof(struct GUID)) == 0)
991 && (transfer->if_version == pipe_names[i].trans_syntax.if_version)
992 && (memcmp(&transfer->uuid, &pipe_names[i].trans_syntax.uuid, sizeof(struct GUID)) == 0) ) {
993 struct api_struct *fns = NULL;
995 PIPE_RPC_FNS *context_fns;
997 if ( !(context_fns = SMB_MALLOC_P(PIPE_RPC_FNS)) ) {
998 DEBUG(0,("check_bind_req: malloc() failed!\n"));
1002 /* save the RPC function table associated with this bind */
1004 get_pipe_fns(i, &fns, &n_fns);
1006 context_fns->cmds = fns;
1007 context_fns->n_cmds = n_fns;
1008 context_fns->context_id = context_id;
1010 /* add to the list of open contexts */
1012 DLIST_ADD( p->contexts, context_fns );
1018 if(pipe_names[i].client_pipe == NULL) {
1025 /*******************************************************************
1026 Register commands to an RPC pipe
1027 *******************************************************************/
1029 NTSTATUS rpc_pipe_register_commands(int version, const char *clnt, const char *srv, const struct api_struct *cmds, int size)
1031 struct rpc_table *rpc_entry;
1033 if (!clnt || !srv || !cmds) {
1034 return NT_STATUS_INVALID_PARAMETER;
1037 if (version != SMB_RPC_INTERFACE_VERSION) {
1038 DEBUG(0,("Can't register rpc commands!\n"
1039 "You tried to register a rpc module with SMB_RPC_INTERFACE_VERSION %d"
1040 ", while this version of samba uses version %d!\n",
1041 version,SMB_RPC_INTERFACE_VERSION));
1042 return NT_STATUS_OBJECT_TYPE_MISMATCH;
1047 * we still need to make sure that don't register the same commands twice!!!
1052 /* We use a temporary variable because this call can fail and
1053 rpc_lookup will still be valid afterwards. It could then succeed if
1054 called again later */
1056 rpc_entry = SMB_REALLOC_ARRAY_KEEP_OLD_ON_ERROR(rpc_lookup, struct rpc_table, rpc_lookup_size);
1057 if (NULL == rpc_entry) {
1059 DEBUG(0, ("rpc_pipe_register_commands: memory allocation failed\n"));
1060 return NT_STATUS_NO_MEMORY;
1062 rpc_lookup = rpc_entry;
1065 rpc_entry = rpc_lookup + (rpc_lookup_size - 1);
1066 ZERO_STRUCTP(rpc_entry);
1067 rpc_entry->pipe.clnt = SMB_STRDUP(clnt);
1068 rpc_entry->pipe.srv = SMB_STRDUP(srv);
1069 rpc_entry->cmds = cmds;
1070 rpc_entry->n_cmds = size;
1072 return NT_STATUS_OK;
1075 /*******************************************************************
1076 Handle a SPNEGO krb5 bind auth.
1077 *******************************************************************/
1079 static bool pipe_spnego_auth_bind_kerberos(pipes_struct *p, prs_struct *rpc_in_p, RPC_HDR_AUTH *pauth_info,
1080 DATA_BLOB *psecblob, prs_struct *pout_auth)
1085 /*******************************************************************
1086 Handle the first part of a SPNEGO bind auth.
1087 *******************************************************************/
1089 static bool pipe_spnego_auth_bind_negotiate(pipes_struct *p, prs_struct *rpc_in_p,
1090 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1096 char *OIDs[ASN1_MAX_OIDS];
1099 bool got_kerberos_mechanism = false;
1100 AUTH_NTLMSSP_STATE *a = NULL;
1101 RPC_HDR_AUTH auth_info;
1103 ZERO_STRUCT(secblob);
1105 ZERO_STRUCT(response);
1107 /* Grab the SPNEGO blob. */
1108 blob = data_blob(NULL,p->hdr.auth_len);
1110 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
1111 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to pull %u bytes - the SPNEGO auth header.\n",
1112 (unsigned int)p->hdr.auth_len ));
1116 if (blob.data[0] != ASN1_APPLICATION(0)) {
1120 /* parse out the OIDs and the first sec blob */
1121 if (!parse_negTokenTarg(blob, OIDs, &secblob)) {
1122 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to parse the security blob.\n"));
1126 if (strcmp(OID_KERBEROS5, OIDs[0]) == 0 || strcmp(OID_KERBEROS5_OLD, OIDs[0]) == 0) {
1127 got_kerberos_mechanism = true;
1130 for (i=0;OIDs[i];i++) {
1131 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got OID %s\n", OIDs[i]));
1134 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got secblob of size %lu\n", (unsigned long)secblob.length));
1136 if ( got_kerberos_mechanism && ((lp_security()==SEC_ADS) || lp_use_kerberos_keytab()) ) {
1137 bool ret = pipe_spnego_auth_bind_kerberos(p, rpc_in_p, pauth_info, &secblob, pout_auth);
1138 data_blob_free(&secblob);
1139 data_blob_free(&blob);
1143 if (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP && p->auth.a_u.auth_ntlmssp_state) {
1144 /* Free any previous auth type. */
1145 free_pipe_ntlmssp_auth_data(&p->auth);
1148 if (!got_kerberos_mechanism) {
1149 /* Initialize the NTLM engine. */
1150 status = auth_ntlmssp_start(&a);
1151 if (!NT_STATUS_IS_OK(status)) {
1156 * Pass the first security blob of data to it.
1157 * This can return an error or NT_STATUS_MORE_PROCESSING_REQUIRED
1158 * which means we need another packet to complete the bind.
1161 status = auth_ntlmssp_update(a, secblob, &chal);
1163 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1164 DEBUG(3,("pipe_spnego_auth_bind_negotiate: auth_ntlmssp_update failed.\n"));
1168 /* Generate the response blob we need for step 2 of the bind. */
1169 response = spnego_gen_auth_response(&chal, status, OID_NTLMSSP);
1172 * SPNEGO negotiate down to NTLMSSP. The subsequent
1173 * code to process follow-up packets is not complete
1176 response = spnego_gen_auth_response(NULL,
1177 NT_STATUS_MORE_PROCESSING_REQUIRED,
1181 /* Copy the blob into the pout_auth parse struct */
1182 init_rpc_hdr_auth(&auth_info, RPC_SPNEGO_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1183 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1184 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of RPC_HDR_AUTH failed.\n"));
1188 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1189 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of data blob failed.\n"));
1193 p->auth.a_u.auth_ntlmssp_state = a;
1194 p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
1195 p->auth.auth_type = PIPE_AUTH_TYPE_SPNEGO_NTLMSSP;
1197 data_blob_free(&blob);
1198 data_blob_free(&secblob);
1199 data_blob_free(&chal);
1200 data_blob_free(&response);
1202 /* We can't set pipe_bound True yet - we need an RPC_ALTER_CONTEXT response packet... */
1207 data_blob_free(&blob);
1208 data_blob_free(&secblob);
1209 data_blob_free(&chal);
1210 data_blob_free(&response);
1212 p->auth.a_u.auth_ntlmssp_state = NULL;
1217 /*******************************************************************
1218 Handle the second part of a SPNEGO bind auth.
1219 *******************************************************************/
1221 static bool pipe_spnego_auth_bind_continue(pipes_struct *p, prs_struct *rpc_in_p,
1222 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1224 RPC_HDR_AUTH auth_info;
1225 DATA_BLOB spnego_blob;
1226 DATA_BLOB auth_blob;
1227 DATA_BLOB auth_reply;
1229 AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
1231 ZERO_STRUCT(spnego_blob);
1232 ZERO_STRUCT(auth_blob);
1233 ZERO_STRUCT(auth_reply);
1234 ZERO_STRUCT(response);
1237 * NB. If we've negotiated down from krb5 to NTLMSSP we'll currently
1238 * fail here as 'a' == NULL.
1240 if (p->auth.auth_type != PIPE_AUTH_TYPE_SPNEGO_NTLMSSP || !a) {
1241 DEBUG(0,("pipe_spnego_auth_bind_continue: not in NTLMSSP auth state.\n"));
1245 /* Grab the SPNEGO blob. */
1246 spnego_blob = data_blob(NULL,p->hdr.auth_len);
1248 if (!prs_copy_data_out((char *)spnego_blob.data, rpc_in_p, p->hdr.auth_len)) {
1249 DEBUG(0,("pipe_spnego_auth_bind_continue: Failed to pull %u bytes - the SPNEGO auth header.\n",
1250 (unsigned int)p->hdr.auth_len ));
1254 if (spnego_blob.data[0] != ASN1_CONTEXT(1)) {
1255 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob type.\n"));
1259 if (!spnego_parse_auth(spnego_blob, &auth_blob)) {
1260 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob.\n"));
1265 * The following call actually checks the challenge/response data.
1266 * for correctness against the given DOMAIN\user name.
1269 if (!pipe_ntlmssp_verify_final(p, &auth_blob)) {
1273 data_blob_free(&spnego_blob);
1274 data_blob_free(&auth_blob);
1276 /* Generate the spnego "accept completed" blob - no incoming data. */
1277 response = spnego_gen_auth_response(&auth_reply, NT_STATUS_OK, OID_NTLMSSP);
1279 /* Copy the blob into the pout_auth parse struct */
1280 init_rpc_hdr_auth(&auth_info, RPC_SPNEGO_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1281 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1282 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of RPC_HDR_AUTH failed.\n"));
1286 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1287 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of data blob failed.\n"));
1291 data_blob_free(&auth_reply);
1292 data_blob_free(&response);
1294 p->pipe_bound = True;
1300 data_blob_free(&spnego_blob);
1301 data_blob_free(&auth_blob);
1302 data_blob_free(&auth_reply);
1303 data_blob_free(&response);
1305 free_pipe_ntlmssp_auth_data(&p->auth);
1306 p->auth.a_u.auth_ntlmssp_state = NULL;
1311 /*******************************************************************
1312 Handle an schannel bind auth.
1313 *******************************************************************/
1315 static bool pipe_schannel_auth_bind(pipes_struct *p, prs_struct *rpc_in_p,
1316 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1318 RPC_HDR_AUTH auth_info;
1319 RPC_AUTH_SCHANNEL_NEG neg;
1320 RPC_AUTH_VERIFIER auth_verifier;
1322 struct dcinfo *pdcinfo;
1325 if (!smb_io_rpc_auth_schannel_neg("", &neg, rpc_in_p, 0)) {
1326 DEBUG(0,("pipe_schannel_auth_bind: Could not unmarshal SCHANNEL auth neg\n"));
1331 * The neg.myname key here must match the remote computer name
1332 * given in the DOM_CLNT_SRV.uni_comp_name used on all netlogon pipe
1333 * operations that use credentials.
1337 ret = secrets_restore_schannel_session_info(p->mem_ctx, neg.myname, &pdcinfo);
1341 DEBUG(0, ("pipe_schannel_auth_bind: Attempt to bind using schannel without successful serverauth2\n"));
1345 p->auth.a_u.schannel_auth = TALLOC_P(p->pipe_state_mem_ctx, struct schannel_auth_struct);
1346 if (!p->auth.a_u.schannel_auth) {
1347 TALLOC_FREE(pdcinfo);
1351 memset(p->auth.a_u.schannel_auth->sess_key, 0, sizeof(p->auth.a_u.schannel_auth->sess_key));
1352 memcpy(p->auth.a_u.schannel_auth->sess_key, pdcinfo->sess_key,
1353 sizeof(pdcinfo->sess_key));
1355 TALLOC_FREE(pdcinfo);
1357 p->auth.a_u.schannel_auth->seq_num = 0;
1360 * JRA. Should we also copy the schannel session key into the pipe session key p->session_key
1361 * here ? We do that for NTLMSSP, but the session key is already set up from the vuser
1362 * struct of the person who opened the pipe. I need to test this further. JRA.
1364 * VL. As we are mapping this to guest set the generic key
1365 * "SystemLibraryDTC" key here. It's a bit difficult to test against
1366 * W2k3, as it does not allow schannel binds against SAMR and LSA
1370 data_blob_free(&p->session_key);
1371 p->session_key = generic_session_key();
1372 if (p->session_key.data == NULL) {
1373 DEBUG(0, ("pipe_schannel_auth_bind: Could not alloc session"
1378 init_rpc_hdr_auth(&auth_info, RPC_SCHANNEL_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1379 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1380 DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1384 /*** SCHANNEL verifier ***/
1386 init_rpc_auth_verifier(&auth_verifier, "\001", 0x0);
1387 if(!smb_io_rpc_schannel_verifier("", &auth_verifier, pout_auth, 0)) {
1388 DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_AUTH_VERIFIER failed.\n"));
1392 prs_align(pout_auth);
1395 if(!prs_uint32("flags ", pout_auth, 0, &flags)) {
1399 DEBUG(10,("pipe_schannel_auth_bind: schannel auth: domain [%s] myname [%s]\n",
1400 neg.domain, neg.myname));
1402 /* We're finished with this bind - no more packets. */
1403 p->auth.auth_data_free_func = NULL;
1404 p->auth.auth_type = PIPE_AUTH_TYPE_SCHANNEL;
1406 p->pipe_bound = True;
1411 /*******************************************************************
1412 Handle an NTLMSSP bind auth.
1413 *******************************************************************/
1415 static bool pipe_ntlmssp_auth_bind(pipes_struct *p, prs_struct *rpc_in_p,
1416 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1418 RPC_HDR_AUTH auth_info;
1422 AUTH_NTLMSSP_STATE *a = NULL;
1425 ZERO_STRUCT(response);
1427 /* Grab the NTLMSSP blob. */
1428 blob = data_blob(NULL,p->hdr.auth_len);
1430 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
1431 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to pull %u bytes - the NTLM auth header.\n",
1432 (unsigned int)p->hdr.auth_len ));
1436 if (strncmp((char *)blob.data, "NTLMSSP", 7) != 0) {
1437 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to read NTLMSSP in blob\n"));
1441 /* We have an NTLMSSP blob. */
1442 status = auth_ntlmssp_start(&a);
1443 if (!NT_STATUS_IS_OK(status)) {
1444 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_start failed: %s\n",
1445 nt_errstr(status) ));
1449 status = auth_ntlmssp_update(a, blob, &response);
1450 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1451 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_update failed: %s\n",
1452 nt_errstr(status) ));
1456 data_blob_free(&blob);
1458 /* Copy the blob into the pout_auth parse struct */
1459 init_rpc_hdr_auth(&auth_info, RPC_NTLMSSP_AUTH_TYPE, pauth_info->auth_level, RPC_HDR_AUTH_LEN, 1);
1460 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1461 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1465 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1466 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of data blob failed.\n"));
1470 p->auth.a_u.auth_ntlmssp_state = a;
1471 p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
1472 p->auth.auth_type = PIPE_AUTH_TYPE_NTLMSSP;
1474 data_blob_free(&blob);
1475 data_blob_free(&response);
1477 DEBUG(10,("pipe_ntlmssp_auth_bind: NTLMSSP auth started\n"));
1479 /* We can't set pipe_bound True yet - we need an RPC_AUTH3 response packet... */
1484 data_blob_free(&blob);
1485 data_blob_free(&response);
1487 free_pipe_ntlmssp_auth_data(&p->auth);
1488 p->auth.a_u.auth_ntlmssp_state = NULL;
1492 /*******************************************************************
1493 Respond to a pipe bind request.
1494 *******************************************************************/
1496 bool api_pipe_bind_req(pipes_struct *p, prs_struct *rpc_in_p)
1500 RPC_HDR_AUTH auth_info;
1502 fstring ack_pipe_name;
1503 prs_struct out_hdr_ba;
1504 prs_struct out_auth;
1505 prs_struct outgoing_rpc;
1508 unsigned int auth_type = RPC_ANONYMOUS_AUTH_TYPE;
1510 /* No rebinds on a bound pipe - use alter context. */
1511 if (p->pipe_bound) {
1512 DEBUG(2,("api_pipe_bind_req: rejecting bind request on bound pipe %s.\n", p->pipe_srv_name));
1513 return setup_bind_nak(p);
1516 prs_init_empty( &outgoing_rpc, p->mem_ctx, MARSHALL);
1519 * Marshall directly into the outgoing PDU space. We
1520 * must do this as we need to set to the bind response
1521 * header and are never sending more than one PDU here.
1524 prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
1527 * Setup the memory to marshall the ba header, and the
1531 if(!prs_init(&out_hdr_ba, 1024, p->mem_ctx, MARSHALL)) {
1532 DEBUG(0,("api_pipe_bind_req: malloc out_hdr_ba failed.\n"));
1533 prs_mem_free(&outgoing_rpc);
1537 if(!prs_init(&out_auth, 1024, p->mem_ctx, MARSHALL)) {
1538 DEBUG(0,("api_pipe_bind_req: malloc out_auth failed.\n"));
1539 prs_mem_free(&outgoing_rpc);
1540 prs_mem_free(&out_hdr_ba);
1544 DEBUG(5,("api_pipe_bind_req: decode request. %d\n", __LINE__));
1547 * Try and find the correct pipe name to ensure
1548 * that this is a pipe name we support.
1552 for (i = 0; i < rpc_lookup_size; i++) {
1553 if (strequal(rpc_lookup[i].pipe.clnt, p->name)) {
1554 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1555 rpc_lookup[i].pipe.clnt, rpc_lookup[i].pipe.srv));
1556 fstrcpy(p->pipe_srv_name, rpc_lookup[i].pipe.srv);
1561 if (i == rpc_lookup_size) {
1562 if (NT_STATUS_IS_ERR(smb_probe_module("rpc", p->name))) {
1563 DEBUG(3,("api_pipe_bind_req: Unknown pipe name %s in bind request.\n",
1565 prs_mem_free(&outgoing_rpc);
1566 prs_mem_free(&out_hdr_ba);
1567 prs_mem_free(&out_auth);
1569 return setup_bind_nak(p);
1572 for (i = 0; i < rpc_lookup_size; i++) {
1573 if (strequal(rpc_lookup[i].pipe.clnt, p->name)) {
1574 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1575 rpc_lookup[i].pipe.clnt, rpc_lookup[i].pipe.srv));
1576 fstrcpy(p->pipe_srv_name, rpc_lookup[i].pipe.srv);
1581 if (i == rpc_lookup_size) {
1582 DEBUG(0, ("module %s doesn't provide functions for pipe %s!\n", p->name, p->name));
1587 ZERO_STRUCT(hdr_rb);
1589 /* decode the bind request */
1590 if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_in_p, 0)) {
1591 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_RB struct.\n"));
1595 /* name has to be \PIPE\xxxxx */
1596 fstrcpy(ack_pipe_name, "\\PIPE\\");
1597 fstrcat(ack_pipe_name, p->pipe_srv_name);
1599 DEBUG(5,("api_pipe_bind_req: make response. %d\n", __LINE__));
1602 * Check if this is an authenticated bind request.
1605 if (p->hdr.auth_len) {
1607 * Decode the authentication verifier.
1610 if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
1611 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1615 auth_type = auth_info.auth_type;
1617 /* Work out if we have to sign or seal etc. */
1618 switch (auth_info.auth_level) {
1619 case RPC_AUTH_LEVEL_INTEGRITY:
1620 p->auth.auth_level = PIPE_AUTH_LEVEL_INTEGRITY;
1622 case RPC_AUTH_LEVEL_PRIVACY:
1623 p->auth.auth_level = PIPE_AUTH_LEVEL_PRIVACY;
1626 DEBUG(0,("api_pipe_bind_req: unexpected auth level (%u).\n",
1627 (unsigned int)auth_info.auth_level ));
1631 ZERO_STRUCT(auth_info);
1634 assoc_gid = hdr_rb.bba.assoc_gid ? hdr_rb.bba.assoc_gid : 0x53f0;
1637 case RPC_NTLMSSP_AUTH_TYPE:
1638 if (!pipe_ntlmssp_auth_bind(p, rpc_in_p, &auth_info, &out_auth)) {
1644 case RPC_SCHANNEL_AUTH_TYPE:
1645 if (!pipe_schannel_auth_bind(p, rpc_in_p, &auth_info, &out_auth)) {
1650 case RPC_SPNEGO_AUTH_TYPE:
1651 if (!pipe_spnego_auth_bind_negotiate(p, rpc_in_p, &auth_info, &out_auth)) {
1656 case RPC_ANONYMOUS_AUTH_TYPE:
1657 /* Unauthenticated bind request. */
1658 /* Get the authenticated pipe user from current_user */
1659 if (!copy_current_user(&p->pipe_user, ¤t_user)) {
1660 DEBUG(10, ("Could not copy current user\n"));
1663 /* We're finished - no more packets. */
1664 p->auth.auth_type = PIPE_AUTH_TYPE_NONE;
1665 /* We must set the pipe auth_level here also. */
1666 p->auth.auth_level = PIPE_AUTH_LEVEL_NONE;
1667 p->pipe_bound = True;
1668 /* The session key was initialized from the SMB
1669 * session in make_internal_rpc_pipe_p */
1673 DEBUG(0,("api_pipe_bind_req: unknown auth type %x requested.\n", auth_type ));
1678 * Create the bind response struct.
1681 /* If the requested abstract synt uuid doesn't match our client pipe,
1682 reject the bind_ack & set the transfer interface synt to all 0's,
1683 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1685 Needed when adding entries to a DACL from NT5 - SK */
1687 if(check_bind_req(p, &hdr_rb.rpc_context[0].abstract, &hdr_rb.rpc_context[0].transfer[0],
1688 hdr_rb.rpc_context[0].context_id )) {
1689 init_rpc_hdr_ba(&hdr_ba,
1690 RPC_MAX_PDU_FRAG_LEN,
1691 RPC_MAX_PDU_FRAG_LEN,
1695 &hdr_rb.rpc_context[0].transfer[0]);
1697 RPC_IFACE null_interface;
1698 ZERO_STRUCT(null_interface);
1699 /* Rejection reason: abstract syntax not supported */
1700 init_rpc_hdr_ba(&hdr_ba, RPC_MAX_PDU_FRAG_LEN,
1701 RPC_MAX_PDU_FRAG_LEN, assoc_gid,
1702 ack_pipe_name, 0x1, 0x2, 0x1,
1704 p->pipe_bound = False;
1711 if(!smb_io_rpc_hdr_ba("", &hdr_ba, &out_hdr_ba, 0)) {
1712 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR_BA failed.\n"));
1717 * Create the header, now we know the length.
1720 if (prs_offset(&out_auth)) {
1721 auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
1724 init_rpc_hdr(&p->hdr, RPC_BINDACK, RPC_FLG_FIRST | RPC_FLG_LAST,
1726 RPC_HEADER_LEN + prs_offset(&out_hdr_ba) + prs_offset(&out_auth),
1730 * Marshall the header into the outgoing PDU.
1733 if(!smb_io_rpc_hdr("", &p->hdr, &outgoing_rpc, 0)) {
1734 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR failed.\n"));
1739 * Now add the RPC_HDR_BA and any auth needed.
1742 if(!prs_append_prs_data( &outgoing_rpc, &out_hdr_ba)) {
1743 DEBUG(0,("api_pipe_bind_req: append of RPC_HDR_BA failed.\n"));
1747 if (auth_len && !prs_append_prs_data( &outgoing_rpc, &out_auth)) {
1748 DEBUG(0,("api_pipe_bind_req: append of auth info failed.\n"));
1753 * Setup the lengths for the initial reply.
1756 p->out_data.data_sent_length = 0;
1757 p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
1758 p->out_data.current_pdu_sent = 0;
1760 prs_mem_free(&out_hdr_ba);
1761 prs_mem_free(&out_auth);
1767 prs_mem_free(&outgoing_rpc);
1768 prs_mem_free(&out_hdr_ba);
1769 prs_mem_free(&out_auth);
1770 return setup_bind_nak(p);
1773 /****************************************************************************
1774 Deal with an alter context call. Can be third part of 3 leg auth request for
1776 ****************************************************************************/
1778 bool api_pipe_alter_context(pipes_struct *p, prs_struct *rpc_in_p)
1782 RPC_HDR_AUTH auth_info;
1784 fstring ack_pipe_name;
1785 prs_struct out_hdr_ba;
1786 prs_struct out_auth;
1787 prs_struct outgoing_rpc;
1790 prs_init_empty( &outgoing_rpc, p->mem_ctx, MARSHALL);
1793 * Marshall directly into the outgoing PDU space. We
1794 * must do this as we need to set to the bind response
1795 * header and are never sending more than one PDU here.
1798 prs_give_memory( &outgoing_rpc, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
1801 * Setup the memory to marshall the ba header, and the
1805 if(!prs_init(&out_hdr_ba, 1024, p->mem_ctx, MARSHALL)) {
1806 DEBUG(0,("api_pipe_alter_context: malloc out_hdr_ba failed.\n"));
1807 prs_mem_free(&outgoing_rpc);
1811 if(!prs_init(&out_auth, 1024, p->mem_ctx, MARSHALL)) {
1812 DEBUG(0,("api_pipe_alter_context: malloc out_auth failed.\n"));
1813 prs_mem_free(&outgoing_rpc);
1814 prs_mem_free(&out_hdr_ba);
1818 DEBUG(5,("api_pipe_alter_context: decode request. %d\n", __LINE__));
1820 /* decode the alter context request */
1821 if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_in_p, 0)) {
1822 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_RB struct.\n"));
1826 /* secondary address CAN be NULL
1827 * as the specs say it's ignored.
1828 * It MUST be NULL to have the spoolss working.
1830 fstrcpy(ack_pipe_name,"");
1832 DEBUG(5,("api_pipe_alter_context: make response. %d\n", __LINE__));
1835 * Check if this is an authenticated alter context request.
1838 if (p->hdr.auth_len != 0) {
1840 * Decode the authentication verifier.
1843 if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
1844 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1849 * Currently only the SPNEGO auth type uses the alter ctx
1850 * response in place of the NTLMSSP auth3 type.
1853 if (auth_info.auth_type == RPC_SPNEGO_AUTH_TYPE) {
1854 /* We can only finish if the pipe is unbound. */
1855 if (!p->pipe_bound) {
1856 if (!pipe_spnego_auth_bind_continue(p, rpc_in_p, &auth_info, &out_auth)) {
1864 ZERO_STRUCT(auth_info);
1867 assoc_gid = hdr_rb.bba.assoc_gid ? hdr_rb.bba.assoc_gid : 0x53f0;
1870 * Create the bind response struct.
1873 /* If the requested abstract synt uuid doesn't match our client pipe,
1874 reject the bind_ack & set the transfer interface synt to all 0's,
1875 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1877 Needed when adding entries to a DACL from NT5 - SK */
1879 if(check_bind_req(p, &hdr_rb.rpc_context[0].abstract, &hdr_rb.rpc_context[0].transfer[0],
1880 hdr_rb.rpc_context[0].context_id )) {
1881 init_rpc_hdr_ba(&hdr_ba,
1882 RPC_MAX_PDU_FRAG_LEN,
1883 RPC_MAX_PDU_FRAG_LEN,
1887 &hdr_rb.rpc_context[0].transfer[0]);
1889 RPC_IFACE null_interface;
1890 ZERO_STRUCT(null_interface);
1891 /* Rejection reason: abstract syntax not supported */
1892 init_rpc_hdr_ba(&hdr_ba, RPC_MAX_PDU_FRAG_LEN,
1893 RPC_MAX_PDU_FRAG_LEN, assoc_gid,
1894 ack_pipe_name, 0x1, 0x2, 0x1,
1896 p->pipe_bound = False;
1903 if(!smb_io_rpc_hdr_ba("", &hdr_ba, &out_hdr_ba, 0)) {
1904 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR_BA failed.\n"));
1909 * Create the header, now we know the length.
1912 if (prs_offset(&out_auth)) {
1913 auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
1916 init_rpc_hdr(&p->hdr, RPC_ALTCONTRESP, RPC_FLG_FIRST | RPC_FLG_LAST,
1918 RPC_HEADER_LEN + prs_offset(&out_hdr_ba) + prs_offset(&out_auth),
1922 * Marshall the header into the outgoing PDU.
1925 if(!smb_io_rpc_hdr("", &p->hdr, &outgoing_rpc, 0)) {
1926 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR failed.\n"));
1931 * Now add the RPC_HDR_BA and any auth needed.
1934 if(!prs_append_prs_data( &outgoing_rpc, &out_hdr_ba)) {
1935 DEBUG(0,("api_pipe_alter_context: append of RPC_HDR_BA failed.\n"));
1939 if (auth_len && !prs_append_prs_data( &outgoing_rpc, &out_auth)) {
1940 DEBUG(0,("api_pipe_alter_context: append of auth info failed.\n"));
1945 * Setup the lengths for the initial reply.
1948 p->out_data.data_sent_length = 0;
1949 p->out_data.current_pdu_len = prs_offset(&outgoing_rpc);
1950 p->out_data.current_pdu_sent = 0;
1952 prs_mem_free(&out_hdr_ba);
1953 prs_mem_free(&out_auth);
1959 prs_mem_free(&outgoing_rpc);
1960 prs_mem_free(&out_hdr_ba);
1961 prs_mem_free(&out_auth);
1962 return setup_bind_nak(p);
1965 /****************************************************************************
1966 Deal with NTLMSSP sign & seal processing on an RPC request.
1967 ****************************************************************************/
1969 bool api_pipe_ntlmssp_auth_process(pipes_struct *p, prs_struct *rpc_in,
1970 uint32 *p_ss_padding_len, NTSTATUS *pstatus)
1972 RPC_HDR_AUTH auth_info;
1973 uint32 auth_len = p->hdr.auth_len;
1974 uint32 save_offset = prs_offset(rpc_in);
1975 AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
1976 unsigned char *data = NULL;
1978 unsigned char *full_packet_data = NULL;
1979 size_t full_packet_data_len;
1980 DATA_BLOB auth_blob;
1982 *pstatus = NT_STATUS_OK;
1984 if (p->auth.auth_level == PIPE_AUTH_LEVEL_NONE || p->auth.auth_level == PIPE_AUTH_LEVEL_CONNECT) {
1989 *pstatus = NT_STATUS_INVALID_PARAMETER;
1993 /* Ensure there's enough data for an authenticated request. */
1994 if ((auth_len > RPC_MAX_SIGN_SIZE) ||
1995 (RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_HDR_AUTH_LEN + auth_len > p->hdr.frag_len)) {
1996 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len %u is too large.\n",
1997 (unsigned int)auth_len ));
1998 *pstatus = NT_STATUS_INVALID_PARAMETER;
2003 * We need the full packet data + length (minus auth stuff) as well as the packet data + length
2004 * after the RPC header.
2005 * We need to pass in the full packet (minus auth len) to the NTLMSSP sign and check seal
2006 * functions as NTLMv2 checks the rpc headers also.
2009 data = (unsigned char *)(prs_data_p(rpc_in) + RPC_HDR_REQ_LEN);
2010 data_len = (size_t)(p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN - RPC_HDR_AUTH_LEN - auth_len);
2012 full_packet_data = p->in_data.current_in_pdu;
2013 full_packet_data_len = p->hdr.frag_len - auth_len;
2015 /* Pull the auth header and the following data into a blob. */
2016 if(!prs_set_offset(rpc_in, RPC_HDR_REQ_LEN + data_len)) {
2017 DEBUG(0,("api_pipe_ntlmssp_auth_process: cannot move offset to %u.\n",
2018 (unsigned int)RPC_HDR_REQ_LEN + (unsigned int)data_len ));
2019 *pstatus = NT_STATUS_INVALID_PARAMETER;
2023 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
2024 DEBUG(0,("api_pipe_ntlmssp_auth_process: failed to unmarshall RPC_HDR_AUTH.\n"));
2025 *pstatus = NT_STATUS_INVALID_PARAMETER;
2029 auth_blob.data = (unsigned char *)prs_data_p(rpc_in) + prs_offset(rpc_in);
2030 auth_blob.length = auth_len;
2032 switch (p->auth.auth_level) {
2033 case PIPE_AUTH_LEVEL_PRIVACY:
2034 /* Data is encrypted. */
2035 *pstatus = ntlmssp_unseal_packet(a->ntlmssp_state,
2038 full_packet_data_len,
2040 if (!NT_STATUS_IS_OK(*pstatus)) {
2044 case PIPE_AUTH_LEVEL_INTEGRITY:
2045 /* Data is signed. */
2046 *pstatus = ntlmssp_check_packet(a->ntlmssp_state,
2049 full_packet_data_len,
2051 if (!NT_STATUS_IS_OK(*pstatus)) {
2056 *pstatus = NT_STATUS_INVALID_PARAMETER;
2061 * Return the current pointer to the data offset.
2064 if(!prs_set_offset(rpc_in, save_offset)) {
2065 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
2066 (unsigned int)save_offset ));
2067 *pstatus = NT_STATUS_INVALID_PARAMETER;
2072 * Remember the padding length. We must remove it from the real data
2073 * stream once the sign/seal is done.
2076 *p_ss_padding_len = auth_info.auth_pad_len;
2081 /****************************************************************************
2082 Deal with schannel processing on an RPC request.
2083 ****************************************************************************/
2085 bool api_pipe_schannel_process(pipes_struct *p, prs_struct *rpc_in, uint32 *p_ss_padding_len)
2089 uint32 save_offset = prs_offset(rpc_in);
2090 RPC_HDR_AUTH auth_info;
2091 RPC_AUTH_SCHANNEL_CHK schannel_chk;
2093 auth_len = p->hdr.auth_len;
2095 if (auth_len != RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN) {
2096 DEBUG(0,("Incorrect auth_len %u.\n", (unsigned int)auth_len ));
2101 * The following is that length of the data we must verify or unseal.
2102 * This doesn't include the RPC headers or the auth_len or the RPC_HDR_AUTH_LEN
2103 * preceeding the auth_data.
2106 if (p->hdr.frag_len < RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_HDR_AUTH_LEN + auth_len) {
2107 DEBUG(0,("Incorrect frag %u, auth %u.\n",
2108 (unsigned int)p->hdr.frag_len,
2109 (unsigned int)auth_len ));
2113 data_len = p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN -
2114 RPC_HDR_AUTH_LEN - auth_len;
2116 DEBUG(5,("data %d auth %d\n", data_len, auth_len));
2118 if(!prs_set_offset(rpc_in, RPC_HDR_REQ_LEN + data_len)) {
2119 DEBUG(0,("cannot move offset to %u.\n",
2120 (unsigned int)RPC_HDR_REQ_LEN + data_len ));
2124 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
2125 DEBUG(0,("failed to unmarshall RPC_HDR_AUTH.\n"));
2129 if (auth_info.auth_type != RPC_SCHANNEL_AUTH_TYPE) {
2130 DEBUG(0,("Invalid auth info %d on schannel\n",
2131 auth_info.auth_type));
2135 if(!smb_io_rpc_auth_schannel_chk("", RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN, &schannel_chk, rpc_in, 0)) {
2136 DEBUG(0,("failed to unmarshal RPC_AUTH_SCHANNEL_CHK.\n"));
2140 if (!schannel_decode(p->auth.a_u.schannel_auth,
2142 SENDER_IS_INITIATOR,
2144 prs_data_p(rpc_in)+RPC_HDR_REQ_LEN, data_len)) {
2145 DEBUG(3,("failed to decode PDU\n"));
2150 * Return the current pointer to the data offset.
2153 if(!prs_set_offset(rpc_in, save_offset)) {
2154 DEBUG(0,("failed to set offset back to %u\n",
2155 (unsigned int)save_offset ));
2159 /* The sequence number gets incremented on both send and receive. */
2160 p->auth.a_u.schannel_auth->seq_num++;
2163 * Remember the padding length. We must remove it from the real data
2164 * stream once the sign/seal is done.
2167 *p_ss_padding_len = auth_info.auth_pad_len;
2172 /****************************************************************************
2173 Return a user struct for a pipe user.
2174 ****************************************************************************/
2176 struct current_user *get_current_user(struct current_user *user, pipes_struct *p)
2178 if (p->pipe_bound &&
2179 (p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP ||
2180 (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP))) {
2181 memcpy(user, &p->pipe_user, sizeof(struct current_user));
2183 memcpy(user, ¤t_user, sizeof(struct current_user));
2189 /****************************************************************************
2190 Find the set of RPC functions associated with this context_id
2191 ****************************************************************************/
2193 static PIPE_RPC_FNS* find_pipe_fns_by_context( PIPE_RPC_FNS *list, uint32 context_id )
2195 PIPE_RPC_FNS *fns = NULL;
2196 PIPE_RPC_FNS *tmp = NULL;
2199 DEBUG(0,("find_pipe_fns_by_context: ERROR! No context list for pipe!\n"));
2203 for (tmp=list; tmp; tmp=tmp->next ) {
2204 if ( tmp->context_id == context_id )
2213 /****************************************************************************
2215 ****************************************************************************/
2217 void free_pipe_rpc_context( PIPE_RPC_FNS *list )
2219 PIPE_RPC_FNS *tmp = list;
2231 /****************************************************************************
2232 Find the correct RPC function to call for this request.
2233 If the pipe is authenticated then become the correct UNIX user
2234 before doing the call.
2235 ****************************************************************************/
2237 bool api_pipe_request(pipes_struct *p)
2240 bool changed_user = False;
2241 PIPE_RPC_FNS *pipe_fns;
2243 if (p->pipe_bound &&
2244 ((p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP) ||
2245 (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP))) {
2246 if(!become_authenticated_pipe_user(p)) {
2247 prs_mem_free(&p->out_data.rdata);
2250 changed_user = True;
2253 DEBUG(5, ("Requested \\PIPE\\%s\n", p->name));
2255 /* get the set of RPC functions for this context */
2257 pipe_fns = find_pipe_fns_by_context(p->contexts, p->hdr_req.context_id);
2260 TALLOC_CTX *frame = talloc_stackframe();
2261 ret = api_rpcTNP(p, p->name, pipe_fns->cmds, pipe_fns->n_cmds);
2265 DEBUG(0,("api_pipe_request: No rpc function table associated with context [%d] on pipe [%s]\n",
2266 p->hdr_req.context_id, p->name));
2270 unbecome_authenticated_pipe_user();
2276 /*******************************************************************
2277 Calls the underlying RPC function for a named pipe.
2278 ********************************************************************/
2280 bool api_rpcTNP(pipes_struct *p, const char *rpc_name,
2281 const struct api_struct *api_rpc_cmds, int n_cmds)
2285 uint32 offset1, offset2;
2287 /* interpret the command */
2288 DEBUG(4,("api_rpcTNP: %s op 0x%x - ", rpc_name, p->hdr_req.opnum));
2290 slprintf(name, sizeof(name)-1, "in_%s", rpc_name);
2291 prs_dump(name, p->hdr_req.opnum, &p->in_data.data);
2293 for (fn_num = 0; fn_num < n_cmds; fn_num++) {
2294 if (api_rpc_cmds[fn_num].opnum == p->hdr_req.opnum && api_rpc_cmds[fn_num].fn != NULL) {
2295 DEBUG(3,("api_rpcTNP: rpc command: %s\n", api_rpc_cmds[fn_num].name));
2300 if (fn_num == n_cmds) {
2302 * For an unknown RPC just return a fault PDU but
2303 * return True to allow RPC's on the pipe to continue
2304 * and not put the pipe into fault state. JRA.
2306 DEBUG(4, ("unknown\n"));
2307 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
2311 offset1 = prs_offset(&p->out_data.rdata);
2313 DEBUG(6, ("api_rpc_cmds[%d].fn == %p\n",
2314 fn_num, api_rpc_cmds[fn_num].fn));
2315 /* do the actual command */
2316 if(!api_rpc_cmds[fn_num].fn(p)) {
2317 DEBUG(0,("api_rpcTNP: %s: %s failed.\n", rpc_name, api_rpc_cmds[fn_num].name));
2318 prs_mem_free(&p->out_data.rdata);
2322 if (p->bad_handle_fault_state) {
2323 DEBUG(4,("api_rpcTNP: bad handle fault return.\n"));
2324 p->bad_handle_fault_state = False;
2325 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_CONTEXT_MISMATCH));
2329 if (p->rng_fault_state) {
2330 DEBUG(4, ("api_rpcTNP: rng fault return\n"));
2331 p->rng_fault_state = False;
2332 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
2336 slprintf(name, sizeof(name)-1, "out_%s", rpc_name);
2337 offset2 = prs_offset(&p->out_data.rdata);
2338 prs_set_offset(&p->out_data.rdata, offset1);
2339 prs_dump(name, p->hdr_req.opnum, &p->out_data.rdata);
2340 prs_set_offset(&p->out_data.rdata, offset2);
2342 DEBUG(5,("api_rpcTNP: called %s successfully\n", rpc_name));
2344 /* Check for buffer underflow in rpc parsing */
2346 if ((DEBUGLEVEL >= 10) &&
2347 (prs_offset(&p->in_data.data) != prs_data_size(&p->in_data.data))) {
2348 size_t data_len = prs_data_size(&p->in_data.data) - prs_offset(&p->in_data.data);
2349 char *data = (char *)SMB_MALLOC(data_len);
2351 DEBUG(10, ("api_rpcTNP: rpc input buffer underflow (parse error?)\n"));
2353 prs_uint8s(False, "", &p->in_data.data, 0, (unsigned char *)data, (uint32)data_len);
2362 /*******************************************************************
2363 *******************************************************************/
2365 void get_pipe_fns( int idx, struct api_struct **fns, int *n_fns )
2367 struct api_struct *cmds = NULL;
2372 lsarpc_get_pipe_fns( &cmds, &n_cmds );
2375 dssetup_get_pipe_fns( &cmds, &n_cmds );
2378 samr_get_pipe_fns( &cmds, &n_cmds );
2381 netlogon_get_pipe_fns( &cmds, &n_cmds );
2384 srvsvc_get_pipe_fns( &cmds, &n_cmds );
2387 wkssvc_get_pipe_fns( &cmds, &n_cmds );
2390 winreg_get_pipe_fns( &cmds, &n_cmds );
2393 spoolss_get_pipe_fns( &cmds, &n_cmds );
2396 netdfs_get_pipe_fns( &cmds, &n_cmds );
2399 svcctl2_get_pipe_fns( &cmds, &n_cmds );
2402 eventlog2_get_pipe_fns( &cmds, &n_cmds );
2405 ntsvcs2_get_pipe_fns( &cmds, &n_cmds );
2409 rpcecho_get_pipe_fns( &cmds, &n_cmds );
2413 DEBUG(0,("get_pipe_fns: Unknown pipe index! [%d]\n", idx));