2 * Unix SMB/CIFS implementation.
3 * RPC Pipe client / server routines
4 * Almost completely rewritten by (C) Jeremy Allison 2005 - 2010
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 "../librpc/gen_ndr/ndr_schannel.h"
32 #include "../libcli/auth/schannel.h"
33 #include "../libcli/auth/spnego.h"
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 = DCERPC_PKT_RESPONSE;
87 /* Set up rpc header flags. */
88 if (p->out_data.data_sent_length == 0) {
89 p->hdr.flags = DCERPC_PFC_FLAG_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 /* Space available - not including padding. */
110 data_space_available = RPC_MAX_PDU_FRAG_LEN - RPC_HEADER_LEN -
111 RPC_HDR_RESP_LEN - RPC_HDR_AUTH_LEN - NTLMSSP_SIG_SIZE;
114 * The amount we send is the minimum of the available
115 * space and the amount left to send.
118 data_len = MIN(data_len_left, data_space_available);
120 /* Work out any padding alignment requirements. */
121 if ((RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len) % SERVER_NDR_PADDING_SIZE) {
122 ss_padding_len = SERVER_NDR_PADDING_SIZE -
123 ((RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len) % SERVER_NDR_PADDING_SIZE);
124 DEBUG(10,("create_next_pdu_ntlmssp: adding sign/seal padding of %u\n",
126 /* If we're over filling the packet, we need to make space
127 * for the padding at the end of the data. */
128 if (data_len + ss_padding_len > data_space_available) {
129 data_len -= SERVER_NDR_PADDING_SIZE;
134 * Set up the alloc hint. This should be the data left to
138 hdr_resp.alloc_hint = data_len_left;
141 * Work out if this PDU will be the last.
144 if(p->out_data.data_sent_length + data_len >= prs_offset(&p->out_data.rdata)) {
145 p->hdr.flags |= DCERPC_PFC_FLAG_LAST;
149 * Set up the header lengths.
152 p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN +
153 data_len + ss_padding_len +
154 RPC_HDR_AUTH_LEN + NTLMSSP_SIG_SIZE;
155 p->hdr.auth_len = NTLMSSP_SIG_SIZE;
159 * Init the parse struct to point at the outgoing
163 prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
165 /* Store the header in the data stream. */
166 if(!smb_io_rpc_hdr("hdr", &p->hdr, &p->out_data.frag, 0)) {
167 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR.\n"));
168 prs_mem_free(&p->out_data.frag);
172 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &p->out_data.frag, 0)) {
173 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_RESP.\n"));
174 prs_mem_free(&p->out_data.frag);
178 /* Copy the data into the PDU. */
180 if(!prs_append_some_prs_data(&p->out_data.frag, &p->out_data.rdata,
181 p->out_data.data_sent_length, data_len)) {
182 DEBUG(0,("create_next_pdu_ntlmssp: failed to copy %u bytes of data.\n", (unsigned int)data_len));
183 prs_mem_free(&p->out_data.frag);
187 /* Copy the sign/seal padding data. */
188 if (ss_padding_len) {
189 char pad[SERVER_NDR_PADDING_SIZE];
191 memset(pad, '\0', SERVER_NDR_PADDING_SIZE);
192 if (!prs_copy_data_in(&p->out_data.frag, pad,
194 DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes of pad data.\n",
195 (unsigned int)ss_padding_len));
196 prs_mem_free(&p->out_data.frag);
202 /* Now write out the auth header and null blob. */
203 if (p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP) {
204 auth_type = DCERPC_AUTH_TYPE_NTLMSSP;
206 auth_type = DCERPC_AUTH_TYPE_SPNEGO;
208 if (p->auth.auth_level == DCERPC_AUTH_LEVEL_PRIVACY) {
209 auth_level = DCERPC_AUTH_LEVEL_PRIVACY;
211 auth_level = DCERPC_AUTH_LEVEL_INTEGRITY;
214 init_rpc_hdr_auth(&auth_info, auth_type, auth_level, ss_padding_len, 1 /* context id. */);
216 if (!smb_io_rpc_hdr_auth("hdr_auth", &auth_info,
217 &p->out_data.frag, 0)) {
218 DEBUG(0,("create_next_pdu_ntlmssp: failed to marshall RPC_HDR_AUTH.\n"));
219 prs_mem_free(&p->out_data.frag);
223 /* Generate the sign blob. */
225 switch (p->auth.auth_level) {
226 case DCERPC_AUTH_LEVEL_PRIVACY:
227 /* Data portion is encrypted. */
228 status = ntlmssp_seal_packet(
230 (uint8_t *)prs_data_p(&p->out_data.frag)
231 + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
232 data_len + ss_padding_len,
233 (unsigned char *)prs_data_p(&p->out_data.frag),
234 (size_t)prs_offset(&p->out_data.frag),
236 if (!NT_STATUS_IS_OK(status)) {
237 data_blob_free(&auth_blob);
238 prs_mem_free(&p->out_data.frag);
242 case DCERPC_AUTH_LEVEL_INTEGRITY:
243 /* Data is signed. */
244 status = ntlmssp_sign_packet(
246 (unsigned char *)prs_data_p(&p->out_data.frag)
247 + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
248 data_len + ss_padding_len,
249 (unsigned char *)prs_data_p(&p->out_data.frag),
250 (size_t)prs_offset(&p->out_data.frag),
252 if (!NT_STATUS_IS_OK(status)) {
253 data_blob_free(&auth_blob);
254 prs_mem_free(&p->out_data.frag);
259 prs_mem_free(&p->out_data.frag);
263 /* Append the auth blob. */
264 if (!prs_copy_data_in(&p->out_data.frag, (char *)auth_blob.data,
266 DEBUG(0,("create_next_pdu_ntlmssp: failed to add %u bytes auth blob.\n",
267 (unsigned int)NTLMSSP_SIG_SIZE));
268 data_blob_free(&auth_blob);
269 prs_mem_free(&p->out_data.frag);
273 data_blob_free(&auth_blob);
276 * Setup the counts for this PDU.
279 p->out_data.data_sent_length += data_len;
280 p->out_data.current_pdu_sent = 0;
285 /*******************************************************************
286 Generate the next PDU to be returned from the data in p->rdata.
287 Return an schannel authenticated fragment.
288 ********************************************************************/
290 static bool create_next_pdu_schannel(pipes_struct *p)
292 RPC_HDR_RESP hdr_resp;
293 uint32 ss_padding_len = 0;
295 uint32 data_space_available;
296 uint32 data_len_left;
301 * If we're in the fault state, keep returning fault PDU's until
302 * the pipe gets closed. JRA.
306 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
310 memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
312 /* Change the incoming request header to a response. */
313 p->hdr.pkt_type = DCERPC_PKT_RESPONSE;
315 /* Set up rpc header flags. */
316 if (p->out_data.data_sent_length == 0) {
317 p->hdr.flags = DCERPC_PFC_FLAG_FIRST;
323 * Work out how much we can fit in a single PDU.
326 data_len_left = prs_offset(&p->out_data.rdata) - p->out_data.data_sent_length;
329 * Ensure there really is data left to send.
333 DEBUG(0,("create_next_pdu_schannel: no data left to send !\n"));
337 /* Space available - not including padding. */
338 data_space_available = RPC_MAX_PDU_FRAG_LEN - RPC_HEADER_LEN
339 - RPC_HDR_RESP_LEN - RPC_HDR_AUTH_LEN
340 - RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
343 * The amount we send is the minimum of the available
344 * space and the amount left to send.
347 data_len = MIN(data_len_left, data_space_available);
349 /* Work out any padding alignment requirements. */
350 if ((RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len) % SERVER_NDR_PADDING_SIZE) {
351 ss_padding_len = SERVER_NDR_PADDING_SIZE -
352 ((RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len) % SERVER_NDR_PADDING_SIZE);
353 DEBUG(10,("create_next_pdu_schannel: adding sign/seal padding of %u\n",
355 /* If we're over filling the packet, we need to make space
356 * for the padding at the end of the data. */
357 if (data_len + ss_padding_len > data_space_available) {
358 data_len -= SERVER_NDR_PADDING_SIZE;
363 * Set up the alloc hint. This should be the data left to
367 hdr_resp.alloc_hint = data_len_left;
370 * Work out if this PDU will be the last.
373 if(p->out_data.data_sent_length + data_len >= prs_offset(&p->out_data.rdata)) {
374 p->hdr.flags |= DCERPC_PFC_FLAG_LAST;
377 p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len + ss_padding_len +
378 RPC_HDR_AUTH_LEN + RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
379 p->hdr.auth_len = RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
382 * Init the parse struct to point at the outgoing
386 prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
388 /* Store the header in the data stream. */
389 if(!smb_io_rpc_hdr("hdr", &p->hdr, &p->out_data.frag, 0)) {
390 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR.\n"));
391 prs_mem_free(&p->out_data.frag);
395 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &p->out_data.frag, 0)) {
396 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_RESP.\n"));
397 prs_mem_free(&p->out_data.frag);
401 /* Store the current offset. */
402 data_pos = prs_offset(&p->out_data.frag);
404 /* Copy the data into the PDU. */
406 if(!prs_append_some_prs_data(&p->out_data.frag, &p->out_data.rdata,
407 p->out_data.data_sent_length, data_len)) {
408 DEBUG(0,("create_next_pdu_schannel: failed to copy %u bytes of data.\n", (unsigned int)data_len));
409 prs_mem_free(&p->out_data.frag);
413 /* Copy the sign/seal padding data. */
414 if (ss_padding_len) {
415 char pad[SERVER_NDR_PADDING_SIZE];
416 memset(pad, '\0', SERVER_NDR_PADDING_SIZE);
417 if (!prs_copy_data_in(&p->out_data.frag, pad,
419 DEBUG(0,("create_next_pdu_schannel: failed to add %u bytes of pad data.\n", (unsigned int)ss_padding_len));
420 prs_mem_free(&p->out_data.frag);
427 * Schannel processing.
429 RPC_HDR_AUTH auth_info;
433 /* Check it's the type of reply we were expecting to decode */
435 init_rpc_hdr_auth(&auth_info,
436 DCERPC_AUTH_TYPE_SCHANNEL,
437 p->auth.auth_level == DCERPC_AUTH_LEVEL_PRIVACY ?
438 DCERPC_AUTH_LEVEL_PRIVACY : DCERPC_AUTH_LEVEL_INTEGRITY,
441 if (!smb_io_rpc_hdr_auth("hdr_auth", &auth_info,
442 &p->out_data.frag, 0)) {
443 DEBUG(0,("create_next_pdu_schannel: failed to marshall RPC_HDR_AUTH.\n"));
444 prs_mem_free(&p->out_data.frag);
448 data = (uint8_t *)prs_data_p(&p->out_data.frag) + data_pos;
450 switch (p->auth.auth_level) {
451 case DCERPC_AUTH_LEVEL_PRIVACY:
452 status = netsec_outgoing_packet(p->auth.a_u.schannel_auth,
456 data_len + ss_padding_len,
459 case DCERPC_AUTH_LEVEL_INTEGRITY:
460 status = netsec_outgoing_packet(p->auth.a_u.schannel_auth,
464 data_len + ss_padding_len,
468 status = NT_STATUS_INTERNAL_ERROR;
472 if (!NT_STATUS_IS_OK(status)) {
473 DEBUG(0,("create_next_pdu_schannel: failed to process packet: %s\n",
475 prs_mem_free(&p->out_data.frag);
479 /* Finally marshall the blob. */
481 if (DEBUGLEVEL >= 10) {
482 dump_NL_AUTH_SIGNATURE(talloc_tos(), &blob);
485 if (!prs_copy_data_in(&p->out_data.frag, (const char *)blob.data, blob.length)) {
486 prs_mem_free(&p->out_data.frag);
492 * Setup the counts for this PDU.
495 p->out_data.data_sent_length += data_len;
496 p->out_data.current_pdu_sent = 0;
501 /*******************************************************************
502 Generate the next PDU to be returned from the data in p->rdata.
503 No authentication done.
504 ********************************************************************/
506 static bool create_next_pdu_noauth(pipes_struct *p)
508 RPC_HDR_RESP hdr_resp;
510 uint32 data_space_available;
511 uint32 data_len_left;
514 * If we're in the fault state, keep returning fault PDU's until
515 * the pipe gets closed. JRA.
519 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
523 memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
525 /* Change the incoming request header to a response. */
526 p->hdr.pkt_type = DCERPC_PKT_RESPONSE;
528 /* Set up rpc header flags. */
529 if (p->out_data.data_sent_length == 0) {
530 p->hdr.flags = DCERPC_PFC_FLAG_FIRST;
536 * Work out how much we can fit in a single PDU.
539 data_len_left = prs_offset(&p->out_data.rdata) - p->out_data.data_sent_length;
542 * Ensure there really is data left to send.
546 DEBUG(0,("create_next_pdu_noath: no data left to send !\n"));
550 data_space_available = RPC_MAX_PDU_FRAG_LEN - RPC_HEADER_LEN
554 * The amount we send is the minimum of the available
555 * space and the amount left to send.
558 data_len = MIN(data_len_left, data_space_available);
561 * Set up the alloc hint. This should be the data left to
565 hdr_resp.alloc_hint = data_len_left;
568 * Work out if this PDU will be the last.
571 if(p->out_data.data_sent_length + data_len >= prs_offset(&p->out_data.rdata)) {
572 p->hdr.flags |= DCERPC_PFC_FLAG_LAST;
576 * Set up the header lengths.
579 p->hdr.frag_len = RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len;
583 * Init the parse struct to point at the outgoing
587 prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
589 /* Store the header in the data stream. */
590 if(!smb_io_rpc_hdr("hdr", &p->hdr, &p->out_data.frag, 0)) {
591 DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR.\n"));
592 prs_mem_free(&p->out_data.frag);
596 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &p->out_data.frag, 0)) {
597 DEBUG(0,("create_next_pdu_noath: failed to marshall RPC_HDR_RESP.\n"));
598 prs_mem_free(&p->out_data.frag);
602 /* Copy the data into the PDU. */
604 if(!prs_append_some_prs_data(&p->out_data.frag, &p->out_data.rdata,
605 p->out_data.data_sent_length, data_len)) {
606 DEBUG(0,("create_next_pdu_noauth: failed to copy %u bytes of data.\n", (unsigned int)data_len));
607 prs_mem_free(&p->out_data.frag);
612 * Setup the counts for this PDU.
615 p->out_data.data_sent_length += data_len;
616 p->out_data.current_pdu_sent = 0;
621 /*******************************************************************
622 Generate the next PDU to be returned from the data in p->rdata.
623 ********************************************************************/
625 bool create_next_pdu(pipes_struct *p)
627 switch(p->auth.auth_level) {
628 case DCERPC_AUTH_LEVEL_NONE:
629 case DCERPC_AUTH_LEVEL_CONNECT:
630 /* This is incorrect for auth level connect. Fixme. JRA */
631 return create_next_pdu_noauth(p);
634 switch(p->auth.auth_type) {
635 case PIPE_AUTH_TYPE_NTLMSSP:
636 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
637 return create_next_pdu_ntlmssp(p);
638 case PIPE_AUTH_TYPE_SCHANNEL:
639 return create_next_pdu_schannel(p);
645 DEBUG(0,("create_next_pdu: invalid internal auth level %u / type %u",
646 (unsigned int)p->auth.auth_level,
647 (unsigned int)p->auth.auth_type));
651 /*******************************************************************
652 Process an NTLMSSP authentication response.
653 If this function succeeds, the user has been authenticated
654 and their domain, name and calling workstation stored in
656 *******************************************************************/
658 static bool pipe_ntlmssp_verify_final(pipes_struct *p, DATA_BLOB *p_resp_blob)
660 DATA_BLOB session_key, reply;
662 AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
665 DEBUG(5,("pipe_ntlmssp_verify_final: pipe %s checking user details\n",
666 get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
670 /* this has to be done as root in order to verify the password */
672 status = auth_ntlmssp_update(a, *p_resp_blob, &reply);
675 /* Don't generate a reply. */
676 data_blob_free(&reply);
678 if (!NT_STATUS_IS_OK(status)) {
682 /* Finally - if the pipe negotiated integrity (sign) or privacy (seal)
683 ensure the underlying NTLMSSP flags are also set. If not we should
686 if (p->auth.auth_level == DCERPC_AUTH_LEVEL_INTEGRITY) {
687 if (!(a->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN)) {
688 DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet integrity requested "
689 "but client declined signing.\n",
690 get_pipe_name_from_syntax(talloc_tos(),
695 if (p->auth.auth_level == DCERPC_AUTH_LEVEL_PRIVACY) {
696 if (!(a->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL)) {
697 DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet privacy requested "
698 "but client declined sealing.\n",
699 get_pipe_name_from_syntax(talloc_tos(),
705 DEBUG(5, ("pipe_ntlmssp_verify_final: OK: user: %s domain: %s "
706 "workstation: %s\n", a->ntlmssp_state->user,
707 a->ntlmssp_state->domain,
708 a->ntlmssp_state->client.netbios_name));
710 if (a->server_info->ptok == NULL) {
711 DEBUG(1,("Error: Authmodule failed to provide nt_user_token\n"));
715 TALLOC_FREE(p->server_info);
717 p->server_info = copy_serverinfo(p, a->server_info);
718 if (p->server_info == NULL) {
719 DEBUG(0, ("copy_serverinfo failed\n"));
724 * We're an authenticated bind over smb, so the session key needs to
725 * be set to "SystemLibraryDTC". Weird, but this is what Windows
726 * does. See the RPC-SAMBA3SESSIONKEY.
729 session_key = generic_session_key();
730 if (session_key.data == NULL) {
734 ret = server_info_set_session_key(p->server_info, session_key);
736 data_blob_free(&session_key);
741 /*******************************************************************
742 The switch table for the pipe names and the functions to handle them.
743 *******************************************************************/
750 struct ndr_syntax_id rpc_interface;
751 const struct api_struct *cmds;
755 static struct rpc_table *rpc_lookup;
756 static int rpc_lookup_size;
758 /*******************************************************************
759 This is the "stage3" NTLMSSP response after a bind request and reply.
760 *******************************************************************/
762 bool api_pipe_bind_auth3(pipes_struct *p, prs_struct *rpc_in_p)
764 RPC_HDR_AUTH auth_info;
767 uint32_t auth_len = p->hdr.auth_len;
771 DEBUG(5,("api_pipe_bind_auth3: decode request. %d\n", __LINE__));
774 DEBUG(0,("api_pipe_bind_auth3: No auth field sent !\n"));
778 /* 4 bytes padding. */
779 if (!prs_uint32("pad", rpc_in_p, 0, &pad)) {
780 DEBUG(0,("api_pipe_bind_auth3: unmarshall of 4 byte pad failed.\n"));
784 /* Ensure there's enough data for an authenticated request. */
785 if (RPC_HEADER_LEN + RPC_HDR_AUTH_LEN + auth_len >
787 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len "
788 "%u is too large.\n",
789 (unsigned int)auth_len ));
794 * Decode the authentication verifier response.
797 /* Pull the auth header and the following data into a blob. */
798 /* NB. The offset of the auth_header is relative to the *end*
799 * of the packet, not the start. Also, the length of the
800 * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
801 * as the RPC header isn't included in rpc_in_p. */
802 if(!prs_set_offset(rpc_in_p,
803 p->hdr.frag_len - RPC_HEADER_LEN -
804 RPC_HDR_AUTH_LEN - auth_len)) {
805 DEBUG(0,("api_pipe_bind_auth3: cannot move "
807 (unsigned int)(p->hdr.frag_len -
808 RPC_HDR_AUTH_LEN - auth_len) ));
812 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in_p, 0)) {
813 DEBUG(0,("api_pipe_bind_auth3: failed to "
814 "unmarshall RPC_HDR_AUTH.\n"));
818 /* We must NEVER look at auth_info->auth_pad_len here,
819 * as old Samba client code gets it wrong and sends it
823 if (auth_info.auth_type != DCERPC_AUTH_TYPE_NTLMSSP) {
824 DEBUG(0,("api_pipe_bind_auth3: incorrect auth type (%u).\n",
825 (unsigned int)auth_info.auth_type ));
829 blob = data_blob(NULL,p->hdr.auth_len);
831 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
832 DEBUG(0,("api_pipe_bind_auth3: Failed to pull %u bytes - the response blob.\n",
833 (unsigned int)p->hdr.auth_len ));
838 * The following call actually checks the challenge/response data.
839 * for correctness against the given DOMAIN\user name.
842 if (!pipe_ntlmssp_verify_final(p, &blob)) {
846 data_blob_free(&blob);
848 p->pipe_bound = True;
854 data_blob_free(&blob);
855 free_pipe_ntlmssp_auth_data(&p->auth);
856 p->auth.a_u.auth_ntlmssp_state = NULL;
861 /*******************************************************************
862 Marshall a bind_nak pdu.
863 *******************************************************************/
865 static bool setup_bind_nak(pipes_struct *p)
870 /* Free any memory in the current return data buffer. */
871 prs_mem_free(&p->out_data.rdata);
874 * Marshall directly into the outgoing PDU space. We
875 * must do this as we need to set to the bind response
876 * header and are never sending more than one PDU here.
879 prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
882 * Initialize a bind_nak header.
885 init_rpc_hdr(&nak_hdr, DCERPC_PKT_BIND_NAK, DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST,
886 p->hdr.call_id, RPC_HEADER_LEN + sizeof(uint16), 0);
889 * Marshall the header into the outgoing PDU.
892 if(!smb_io_rpc_hdr("", &nak_hdr, &p->out_data.frag, 0)) {
893 DEBUG(0,("setup_bind_nak: marshalling of RPC_HDR failed.\n"));
894 prs_mem_free(&p->out_data.frag);
899 * Now add the reject reason.
902 if(!prs_uint16("reject code", &p->out_data.frag, 0, &zero)) {
903 prs_mem_free(&p->out_data.frag);
907 p->out_data.data_sent_length = 0;
908 p->out_data.current_pdu_sent = 0;
910 if (p->auth.auth_data_free_func) {
911 (*p->auth.auth_data_free_func)(&p->auth);
913 p->auth.auth_level = DCERPC_AUTH_LEVEL_NONE;
914 p->auth.auth_type = PIPE_AUTH_TYPE_NONE;
915 p->pipe_bound = False;
920 /*******************************************************************
921 Marshall a fault pdu.
922 *******************************************************************/
924 bool setup_fault_pdu(pipes_struct *p, NTSTATUS status)
927 RPC_HDR_RESP hdr_resp;
928 RPC_HDR_FAULT fault_resp;
930 /* Free any memory in the current return data buffer. */
931 prs_mem_free(&p->out_data.rdata);
934 * Marshall directly into the outgoing PDU space. We
935 * must do this as we need to set to the bind response
936 * header and are never sending more than one PDU here.
939 prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
942 * Initialize a fault header.
945 init_rpc_hdr(&fault_hdr, DCERPC_PKT_FAULT, DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST | DCERPC_PFC_FLAG_DID_NOT_EXECUTE,
946 p->hdr.call_id, RPC_HEADER_LEN + RPC_HDR_RESP_LEN + RPC_HDR_FAULT_LEN, 0);
949 * Initialize the HDR_RESP and FAULT parts of the PDU.
952 memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
954 fault_resp.status = status;
955 fault_resp.reserved = 0;
958 * Marshall the header into the outgoing PDU.
961 if(!smb_io_rpc_hdr("", &fault_hdr, &p->out_data.frag, 0)) {
962 DEBUG(0,("setup_fault_pdu: marshalling of RPC_HDR failed.\n"));
963 prs_mem_free(&p->out_data.frag);
967 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &p->out_data.frag, 0)) {
968 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_RESP.\n"));
969 prs_mem_free(&p->out_data.frag);
973 if(!smb_io_rpc_hdr_fault("fault", &fault_resp, &p->out_data.frag, 0)) {
974 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_FAULT.\n"));
975 prs_mem_free(&p->out_data.frag);
979 p->out_data.data_sent_length = 0;
980 p->out_data.current_pdu_sent = 0;
986 /*******************************************************************
987 Marshall a cancel_ack pdu.
988 We should probably check the auth-verifier here.
989 *******************************************************************/
991 bool setup_cancel_ack_reply(pipes_struct *p, prs_struct *rpc_in_p)
993 prs_struct outgoing_pdu;
994 RPC_HDR ack_reply_hdr;
996 /* Free any memory in the current return data buffer. */
997 prs_mem_free(&p->out_data.rdata);
1000 * Marshall directly into the outgoing PDU space. We
1001 * must do this as we need to set to the bind response
1002 * header and are never sending more than one PDU here.
1005 prs_init_empty( &outgoing_pdu, p->mem_ctx, MARSHALL);
1006 prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
1009 * Initialize a cancel_ack header.
1012 init_rpc_hdr(&ack_reply_hdr, DCERPC_PKT_CANCEL_ACK, DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST,
1013 p->hdr.call_id, RPC_HEADER_LEN, 0);
1016 * Marshall the header into the outgoing PDU.
1019 if(!smb_io_rpc_hdr("", &ack_reply_hdr, &outgoing_pdu, 0)) {
1020 DEBUG(0,("setup_cancel_ack_reply: marshalling of RPC_HDR failed.\n"));
1021 prs_mem_free(&outgoing_pdu);
1025 p->out_data.data_sent_length = 0;
1026 p->out_data.current_pdu_len = prs_offset(&outgoing_pdu);
1027 p->out_data.current_pdu_sent = 0;
1029 prs_mem_free(&outgoing_pdu);
1034 /*******************************************************************
1035 Ensure a bind request has the correct abstract & transfer interface.
1036 Used to reject unknown binds from Win2k.
1037 *******************************************************************/
1039 static bool check_bind_req(struct pipes_struct *p,
1040 struct ndr_syntax_id* abstract,
1041 struct ndr_syntax_id* transfer,
1045 struct pipe_rpc_fns *context_fns;
1047 DEBUG(3,("check_bind_req for %s\n",
1048 get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
1050 /* we have to check all now since win2k introduced a new UUID on the lsaprpc pipe */
1052 for (i=0; i<rpc_lookup_size; i++) {
1053 DEBUGADD(10, ("checking %s\n", rpc_lookup[i].pipe.clnt));
1054 if (ndr_syntax_id_equal(
1055 abstract, &rpc_lookup[i].rpc_interface)
1056 && ndr_syntax_id_equal(
1057 transfer, &ndr_transfer_syntax)) {
1062 if (i == rpc_lookup_size) {
1066 context_fns = SMB_MALLOC_P(struct pipe_rpc_fns);
1067 if (context_fns == NULL) {
1068 DEBUG(0,("check_bind_req: malloc() failed!\n"));
1072 context_fns->cmds = rpc_lookup[i].cmds;
1073 context_fns->n_cmds = rpc_lookup[i].n_cmds;
1074 context_fns->context_id = context_id;
1076 /* add to the list of open contexts */
1078 DLIST_ADD( p->contexts, context_fns );
1083 /*******************************************************************
1084 Register commands to an RPC pipe
1085 *******************************************************************/
1087 NTSTATUS rpc_srv_register(int version, const char *clnt, const char *srv,
1088 const struct ndr_interface_table *iface,
1089 const struct api_struct *cmds, int size)
1091 struct rpc_table *rpc_entry;
1093 if (!clnt || !srv || !cmds) {
1094 return NT_STATUS_INVALID_PARAMETER;
1097 if (version != SMB_RPC_INTERFACE_VERSION) {
1098 DEBUG(0,("Can't register rpc commands!\n"
1099 "You tried to register a rpc module with SMB_RPC_INTERFACE_VERSION %d"
1100 ", while this version of samba uses version %d!\n",
1101 version,SMB_RPC_INTERFACE_VERSION));
1102 return NT_STATUS_OBJECT_TYPE_MISMATCH;
1107 * we still need to make sure that don't register the same commands twice!!!
1112 /* We use a temporary variable because this call can fail and
1113 rpc_lookup will still be valid afterwards. It could then succeed if
1114 called again later */
1116 rpc_entry = SMB_REALLOC_ARRAY_KEEP_OLD_ON_ERROR(rpc_lookup, struct rpc_table, rpc_lookup_size);
1117 if (NULL == rpc_entry) {
1119 DEBUG(0, ("rpc_pipe_register_commands: memory allocation failed\n"));
1120 return NT_STATUS_NO_MEMORY;
1122 rpc_lookup = rpc_entry;
1125 rpc_entry = rpc_lookup + (rpc_lookup_size - 1);
1126 ZERO_STRUCTP(rpc_entry);
1127 rpc_entry->pipe.clnt = SMB_STRDUP(clnt);
1128 rpc_entry->pipe.srv = SMB_STRDUP(srv);
1129 rpc_entry->rpc_interface = iface->syntax_id;
1130 rpc_entry->cmds = cmds;
1131 rpc_entry->n_cmds = size;
1133 return NT_STATUS_OK;
1137 * Is a named pipe known?
1138 * @param[in] cli_filename The pipe name requested by the client
1139 * @result Do we want to serve this?
1141 bool is_known_pipename(const char *cli_filename, struct ndr_syntax_id *syntax)
1143 const char *pipename = cli_filename;
1147 if (strnequal(pipename, "\\PIPE\\", 6)) {
1151 if (*pipename == '\\') {
1155 if (lp_disable_spoolss() && strequal(pipename, "spoolss")) {
1156 DEBUG(10, ("refusing spoolss access\n"));
1160 for (i=0; i<rpc_lookup_size; i++) {
1161 if (strequal(pipename, rpc_lookup[i].pipe.clnt)) {
1162 *syntax = rpc_lookup[i].rpc_interface;
1167 status = smb_probe_module("rpc", pipename);
1168 if (!NT_STATUS_IS_OK(status)) {
1169 DEBUG(10, ("is_known_pipename: %s unknown\n", cli_filename));
1172 DEBUG(10, ("is_known_pipename: %s loaded dynamically\n", pipename));
1175 * Scan the list again for the interface id
1178 for (i=0; i<rpc_lookup_size; i++) {
1179 if (strequal(pipename, rpc_lookup[i].pipe.clnt)) {
1180 *syntax = rpc_lookup[i].rpc_interface;
1185 DEBUG(10, ("is_known_pipename: pipe %s did not register itself!\n",
1191 /*******************************************************************
1192 Handle a SPNEGO krb5 bind auth.
1193 *******************************************************************/
1195 static bool pipe_spnego_auth_bind_kerberos(pipes_struct *p, prs_struct *rpc_in_p, RPC_HDR_AUTH *pauth_info,
1196 DATA_BLOB *psecblob, prs_struct *pout_auth)
1201 /*******************************************************************
1202 Handle the first part of a SPNEGO bind auth.
1203 *******************************************************************/
1205 static bool pipe_spnego_auth_bind_negotiate(pipes_struct *p, prs_struct *rpc_in_p,
1206 uint32_t ss_padding_len,
1207 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1213 char *OIDs[ASN1_MAX_OIDS];
1216 bool got_kerberos_mechanism = false;
1217 AUTH_NTLMSSP_STATE *a = NULL;
1218 RPC_HDR_AUTH auth_info;
1220 ZERO_STRUCT(secblob);
1222 ZERO_STRUCT(response);
1224 /* Grab the SPNEGO blob. */
1225 blob = data_blob(NULL,p->hdr.auth_len);
1227 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
1228 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to pull %u bytes - the SPNEGO auth header.\n",
1229 (unsigned int)p->hdr.auth_len ));
1233 if (blob.data[0] != ASN1_APPLICATION(0)) {
1237 /* parse out the OIDs and the first sec blob */
1238 if (!parse_negTokenTarg(blob, OIDs, &secblob)) {
1239 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to parse the security blob.\n"));
1243 if (strcmp(OID_KERBEROS5, OIDs[0]) == 0 || strcmp(OID_KERBEROS5_OLD, OIDs[0]) == 0) {
1244 got_kerberos_mechanism = true;
1247 for (i=0;OIDs[i];i++) {
1248 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got OID %s\n", OIDs[i]));
1249 TALLOC_FREE(OIDs[i]);
1251 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got secblob of size %lu\n", (unsigned long)secblob.length));
1253 if ( got_kerberos_mechanism && ((lp_security()==SEC_ADS) || USE_KERBEROS_KEYTAB) ) {
1254 bool ret = pipe_spnego_auth_bind_kerberos(p, rpc_in_p, pauth_info, &secblob, pout_auth);
1255 data_blob_free(&secblob);
1256 data_blob_free(&blob);
1260 if (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP && p->auth.a_u.auth_ntlmssp_state) {
1261 /* Free any previous auth type. */
1262 free_pipe_ntlmssp_auth_data(&p->auth);
1265 if (!got_kerberos_mechanism) {
1266 /* Initialize the NTLM engine. */
1267 status = auth_ntlmssp_start(&a);
1268 if (!NT_STATUS_IS_OK(status)) {
1273 * Pass the first security blob of data to it.
1274 * This can return an error or NT_STATUS_MORE_PROCESSING_REQUIRED
1275 * which means we need another packet to complete the bind.
1278 status = auth_ntlmssp_update(a, secblob, &chal);
1280 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1281 DEBUG(3,("pipe_spnego_auth_bind_negotiate: auth_ntlmssp_update failed.\n"));
1285 /* Generate the response blob we need for step 2 of the bind. */
1286 response = spnego_gen_auth_response(&chal, status, OID_NTLMSSP);
1289 * SPNEGO negotiate down to NTLMSSP. The subsequent
1290 * code to process follow-up packets is not complete
1293 response = spnego_gen_auth_response(NULL,
1294 NT_STATUS_MORE_PROCESSING_REQUIRED,
1298 /* auth_pad_len will be handled by the caller */
1300 /* Copy the blob into the pout_auth parse struct */
1301 init_rpc_hdr_auth(&auth_info, DCERPC_AUTH_TYPE_SPNEGO,
1302 pauth_info->auth_level, ss_padding_len, 1);
1303 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1304 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of RPC_HDR_AUTH failed.\n"));
1308 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1309 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of data blob failed.\n"));
1313 p->auth.a_u.auth_ntlmssp_state = a;
1314 p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
1315 p->auth.auth_type = PIPE_AUTH_TYPE_SPNEGO_NTLMSSP;
1317 data_blob_free(&blob);
1318 data_blob_free(&secblob);
1319 data_blob_free(&chal);
1320 data_blob_free(&response);
1322 /* We can't set pipe_bound True yet - we need an RPC_ALTER_CONTEXT response packet... */
1327 data_blob_free(&blob);
1328 data_blob_free(&secblob);
1329 data_blob_free(&chal);
1330 data_blob_free(&response);
1332 p->auth.a_u.auth_ntlmssp_state = NULL;
1337 /*******************************************************************
1338 Handle the second part of a SPNEGO bind auth.
1339 *******************************************************************/
1341 static bool pipe_spnego_auth_bind_continue(pipes_struct *p, prs_struct *rpc_in_p,
1342 uint32_t ss_padding_len,
1343 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1345 RPC_HDR_AUTH auth_info;
1346 DATA_BLOB spnego_blob;
1347 DATA_BLOB auth_blob;
1348 DATA_BLOB auth_reply;
1350 AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
1352 ZERO_STRUCT(spnego_blob);
1353 ZERO_STRUCT(auth_blob);
1354 ZERO_STRUCT(auth_reply);
1355 ZERO_STRUCT(response);
1358 * NB. If we've negotiated down from krb5 to NTLMSSP we'll currently
1359 * fail here as 'a' == NULL.
1361 if (p->auth.auth_type != PIPE_AUTH_TYPE_SPNEGO_NTLMSSP || !a) {
1362 DEBUG(0,("pipe_spnego_auth_bind_continue: not in NTLMSSP auth state.\n"));
1366 /* Grab the SPNEGO blob. */
1367 spnego_blob = data_blob(NULL,p->hdr.auth_len);
1369 if (!prs_copy_data_out((char *)spnego_blob.data, rpc_in_p, p->hdr.auth_len)) {
1370 DEBUG(0,("pipe_spnego_auth_bind_continue: Failed to pull %u bytes - the SPNEGO auth header.\n",
1371 (unsigned int)p->hdr.auth_len ));
1375 if (spnego_blob.data[0] != ASN1_CONTEXT(1)) {
1376 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob type.\n"));
1380 if (!spnego_parse_auth(spnego_blob, &auth_blob)) {
1381 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob.\n"));
1386 * The following call actually checks the challenge/response data.
1387 * for correctness against the given DOMAIN\user name.
1390 if (!pipe_ntlmssp_verify_final(p, &auth_blob)) {
1394 data_blob_free(&spnego_blob);
1395 data_blob_free(&auth_blob);
1397 /* Generate the spnego "accept completed" blob - no incoming data. */
1398 response = spnego_gen_auth_response(&auth_reply, NT_STATUS_OK, OID_NTLMSSP);
1400 /* FIXME - add auth_pad_len here ! */
1402 /* Copy the blob into the pout_auth parse struct */
1403 init_rpc_hdr_auth(&auth_info, DCERPC_AUTH_TYPE_SPNEGO,
1404 pauth_info->auth_level, ss_padding_len, 1);
1405 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1406 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of RPC_HDR_AUTH failed.\n"));
1410 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1411 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of data blob failed.\n"));
1415 data_blob_free(&auth_reply);
1416 data_blob_free(&response);
1418 p->pipe_bound = True;
1424 data_blob_free(&spnego_blob);
1425 data_blob_free(&auth_blob);
1426 data_blob_free(&auth_reply);
1427 data_blob_free(&response);
1429 free_pipe_ntlmssp_auth_data(&p->auth);
1430 p->auth.a_u.auth_ntlmssp_state = NULL;
1435 /*******************************************************************
1436 Handle an schannel bind auth.
1437 *******************************************************************/
1439 static bool pipe_schannel_auth_bind(pipes_struct *p, prs_struct *rpc_in_p,
1440 uint32_t ss_padding_len,
1441 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1443 RPC_HDR_AUTH auth_info;
1444 struct NL_AUTH_MESSAGE neg;
1445 struct NL_AUTH_MESSAGE reply;
1448 struct netlogon_creds_CredentialState *creds;
1449 DATA_BLOB session_key;
1450 enum ndr_err_code ndr_err;
1453 blob = data_blob_const(prs_data_p(rpc_in_p) + prs_offset(rpc_in_p),
1454 prs_data_size(rpc_in_p));
1456 ndr_err = ndr_pull_struct_blob(&blob, talloc_tos(), &neg,
1457 (ndr_pull_flags_fn_t)ndr_pull_NL_AUTH_MESSAGE);
1458 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1459 DEBUG(0,("pipe_schannel_auth_bind: Could not unmarshal SCHANNEL auth neg\n"));
1463 if (DEBUGLEVEL >= 10) {
1464 NDR_PRINT_DEBUG(NL_AUTH_MESSAGE, &neg);
1467 if (!(neg.Flags & NL_FLAG_OEM_NETBIOS_COMPUTER_NAME)) {
1468 DEBUG(0,("pipe_schannel_auth_bind: Did not receive netbios computer name\n"));
1473 * The neg.oem_netbios_computer.a key here must match the remote computer name
1474 * given in the DOM_CLNT_SRV.uni_comp_name used on all netlogon pipe
1475 * operations that use credentials.
1479 status = schannel_get_creds_state(p, lp_private_dir(),
1480 neg.oem_netbios_computer.a, &creds);
1483 if (!NT_STATUS_IS_OK(status)) {
1484 DEBUG(0, ("pipe_schannel_auth_bind: Attempt to bind using schannel without successful serverauth2\n"));
1488 p->auth.a_u.schannel_auth = talloc(p, struct schannel_state);
1489 if (!p->auth.a_u.schannel_auth) {
1494 p->auth.a_u.schannel_auth->state = SCHANNEL_STATE_START;
1495 p->auth.a_u.schannel_auth->seq_num = 0;
1496 p->auth.a_u.schannel_auth->initiator = false;
1497 p->auth.a_u.schannel_auth->creds = creds;
1500 * JRA. Should we also copy the schannel session key into the pipe session key p->session_key
1501 * here ? We do that for NTLMSSP, but the session key is already set up from the vuser
1502 * struct of the person who opened the pipe. I need to test this further. JRA.
1504 * VL. As we are mapping this to guest set the generic key
1505 * "SystemLibraryDTC" key here. It's a bit difficult to test against
1506 * W2k3, as it does not allow schannel binds against SAMR and LSA
1510 session_key = generic_session_key();
1511 if (session_key.data == NULL) {
1512 DEBUG(0, ("pipe_schannel_auth_bind: Could not alloc session"
1517 ret = server_info_set_session_key(p->server_info, session_key);
1519 data_blob_free(&session_key);
1522 DEBUG(0, ("server_info_set_session_key failed\n"));
1526 init_rpc_hdr_auth(&auth_info, DCERPC_AUTH_TYPE_SCHANNEL,
1527 pauth_info->auth_level, ss_padding_len, 1);
1528 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1529 DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1533 /*** SCHANNEL verifier ***/
1535 reply.MessageType = NL_NEGOTIATE_RESPONSE;
1537 reply.Buffer.dummy = 5; /* ??? actually I don't think
1538 * this has any meaning
1541 ndr_err = ndr_push_struct_blob(&blob, talloc_tos(), &reply,
1542 (ndr_push_flags_fn_t)ndr_push_NL_AUTH_MESSAGE);
1543 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1544 DEBUG(0,("Failed to marshall NL_AUTH_MESSAGE.\n"));
1548 if (DEBUGLEVEL >= 10) {
1549 NDR_PRINT_DEBUG(NL_AUTH_MESSAGE, &reply);
1552 if (!prs_copy_data_in(pout_auth, (const char *)blob.data, blob.length)) {
1556 DEBUG(10,("pipe_schannel_auth_bind: schannel auth: domain [%s] myname [%s]\n",
1557 neg.oem_netbios_domain.a, neg.oem_netbios_computer.a));
1559 /* We're finished with this bind - no more packets. */
1560 p->auth.auth_data_free_func = NULL;
1561 p->auth.auth_type = PIPE_AUTH_TYPE_SCHANNEL;
1563 p->pipe_bound = True;
1568 /*******************************************************************
1569 Handle an NTLMSSP bind auth.
1570 *******************************************************************/
1572 static bool pipe_ntlmssp_auth_bind(pipes_struct *p, prs_struct *rpc_in_p,
1573 uint32_t ss_padding_len,
1574 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1576 RPC_HDR_AUTH auth_info;
1580 AUTH_NTLMSSP_STATE *a = NULL;
1583 ZERO_STRUCT(response);
1585 /* Grab the NTLMSSP blob. */
1586 blob = data_blob(NULL,p->hdr.auth_len);
1588 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
1589 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to pull %u bytes - the NTLM auth header.\n",
1590 (unsigned int)p->hdr.auth_len ));
1594 if (strncmp((char *)blob.data, "NTLMSSP", 7) != 0) {
1595 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to read NTLMSSP in blob\n"));
1599 /* We have an NTLMSSP blob. */
1600 status = auth_ntlmssp_start(&a);
1601 if (!NT_STATUS_IS_OK(status)) {
1602 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_start failed: %s\n",
1603 nt_errstr(status) ));
1607 status = auth_ntlmssp_update(a, blob, &response);
1608 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1609 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_update failed: %s\n",
1610 nt_errstr(status) ));
1614 data_blob_free(&blob);
1616 /* Copy the blob into the pout_auth parse struct */
1617 init_rpc_hdr_auth(&auth_info, DCERPC_AUTH_TYPE_NTLMSSP,
1618 pauth_info->auth_level, ss_padding_len, 1);
1619 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1620 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1624 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1625 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of data blob failed.\n"));
1629 p->auth.a_u.auth_ntlmssp_state = a;
1630 p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
1631 p->auth.auth_type = PIPE_AUTH_TYPE_NTLMSSP;
1633 data_blob_free(&blob);
1634 data_blob_free(&response);
1636 DEBUG(10,("pipe_ntlmssp_auth_bind: NTLMSSP auth started\n"));
1638 /* We can't set pipe_bound True yet - we need an DCERPC_PKT_AUTH3 response packet... */
1643 data_blob_free(&blob);
1644 data_blob_free(&response);
1646 free_pipe_ntlmssp_auth_data(&p->auth);
1647 p->auth.a_u.auth_ntlmssp_state = NULL;
1651 /*******************************************************************
1652 Respond to a pipe bind request.
1653 *******************************************************************/
1655 bool api_pipe_bind_req(pipes_struct *p, prs_struct *rpc_in_p)
1659 RPC_HDR_AUTH auth_info;
1661 fstring ack_pipe_name;
1662 prs_struct out_hdr_ba;
1663 prs_struct out_auth;
1666 unsigned int auth_type = DCERPC_AUTH_TYPE_NONE;
1667 uint32_t ss_padding_len = 0;
1669 /* No rebinds on a bound pipe - use alter context. */
1670 if (p->pipe_bound) {
1671 DEBUG(2,("api_pipe_bind_req: rejecting bind request on bound "
1673 get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
1674 return setup_bind_nak(p);
1677 prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
1680 * Marshall directly into the outgoing PDU space. We
1681 * must do this as we need to set to the bind response
1682 * header and are never sending more than one PDU here.
1686 * Setup the memory to marshall the ba header, and the
1690 if(!prs_init(&out_hdr_ba, 1024, p->mem_ctx, MARSHALL)) {
1691 DEBUG(0,("api_pipe_bind_req: malloc out_hdr_ba failed.\n"));
1692 prs_mem_free(&p->out_data.frag);
1696 if(!prs_init(&out_auth, 1024, p->mem_ctx, MARSHALL)) {
1697 DEBUG(0,("api_pipe_bind_req: malloc out_auth failed.\n"));
1698 prs_mem_free(&p->out_data.frag);
1699 prs_mem_free(&out_hdr_ba);
1703 DEBUG(5,("api_pipe_bind_req: decode request. %d\n", __LINE__));
1705 ZERO_STRUCT(hdr_rb);
1707 /* decode the bind request */
1709 if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_in_p, 0)) {
1710 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_RB "
1715 if (hdr_rb.num_contexts == 0) {
1716 DEBUG(0, ("api_pipe_bind_req: no rpc contexts around\n"));
1721 * Try and find the correct pipe name to ensure
1722 * that this is a pipe name we support.
1725 for (i = 0; i < rpc_lookup_size; i++) {
1726 if (ndr_syntax_id_equal(&rpc_lookup[i].rpc_interface,
1727 &hdr_rb.rpc_context[0].abstract)) {
1728 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1729 rpc_lookup[i].pipe.clnt, rpc_lookup[i].pipe.srv));
1734 if (i == rpc_lookup_size) {
1737 status = smb_probe_module(
1738 "rpc", get_pipe_name_from_syntax(
1740 &hdr_rb.rpc_context[0].abstract));
1742 if (NT_STATUS_IS_ERR(status)) {
1743 DEBUG(3,("api_pipe_bind_req: Unknown pipe name %s in bind request.\n",
1744 get_pipe_name_from_syntax(
1746 &hdr_rb.rpc_context[0].abstract)));
1747 prs_mem_free(&p->out_data.frag);
1748 prs_mem_free(&out_hdr_ba);
1749 prs_mem_free(&out_auth);
1751 return setup_bind_nak(p);
1754 for (i = 0; i < rpc_lookup_size; i++) {
1755 if (strequal(rpc_lookup[i].pipe.clnt,
1756 get_pipe_name_from_syntax(talloc_tos(),
1758 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1759 rpc_lookup[i].pipe.clnt, rpc_lookup[i].pipe.srv));
1764 if (i == rpc_lookup_size) {
1765 DEBUG(0, ("module %s doesn't provide functions for "
1767 get_pipe_name_from_syntax(talloc_tos(),
1769 get_pipe_name_from_syntax(talloc_tos(),
1775 /* name has to be \PIPE\xxxxx */
1776 fstrcpy(ack_pipe_name, "\\PIPE\\");
1777 fstrcat(ack_pipe_name, rpc_lookup[i].pipe.srv);
1779 DEBUG(5,("api_pipe_bind_req: make response. %d\n", __LINE__));
1781 assoc_gid = hdr_rb.bba.assoc_gid ? hdr_rb.bba.assoc_gid : 0x53f0;
1784 * Create the bind response struct.
1787 /* If the requested abstract synt uuid doesn't match our client pipe,
1788 reject the bind_ack & set the transfer interface synt to all 0's,
1789 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1791 Needed when adding entries to a DACL from NT5 - SK */
1793 if(check_bind_req(p, &hdr_rb.rpc_context[0].abstract, &hdr_rb.rpc_context[0].transfer[0],
1794 hdr_rb.rpc_context[0].context_id )) {
1795 init_rpc_hdr_ba(&hdr_ba,
1796 RPC_MAX_PDU_FRAG_LEN,
1797 RPC_MAX_PDU_FRAG_LEN,
1801 &hdr_rb.rpc_context[0].transfer[0]);
1803 /* Rejection reason: abstract syntax not supported */
1804 init_rpc_hdr_ba(&hdr_ba, RPC_MAX_PDU_FRAG_LEN,
1805 RPC_MAX_PDU_FRAG_LEN, assoc_gid,
1806 ack_pipe_name, 0x1, 0x2, 0x1,
1807 &null_ndr_syntax_id);
1808 p->pipe_bound = False;
1815 if(!smb_io_rpc_hdr_ba("", &hdr_ba, &out_hdr_ba, 0)) {
1816 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR_BA failed.\n"));
1821 * Check if this is an authenticated bind request.
1824 if (p->hdr.auth_len) {
1826 * Decode the authentication verifier.
1829 /* Work out any padding needed before the auth footer. */
1830 if ((RPC_HEADER_LEN + prs_offset(&out_hdr_ba)) % SERVER_NDR_PADDING_SIZE) {
1831 ss_padding_len = SERVER_NDR_PADDING_SIZE -
1832 ((RPC_HEADER_LEN + prs_offset(&out_hdr_ba)) % SERVER_NDR_PADDING_SIZE);
1833 DEBUG(10,("api_pipe_bind_req: auth pad_len = %u\n",
1834 (unsigned int)ss_padding_len ));
1837 /* Quick length check. Won't catch a bad auth footer,
1838 * prevents overrun. */
1840 if (p->hdr.frag_len < RPC_HEADER_LEN + RPC_HDR_AUTH_LEN + p->hdr.auth_len) {
1841 DEBUG(0,("api_pipe_bind_req: auth_len (%u) "
1842 "too long for fragment %u.\n",
1843 (unsigned int)p->hdr.auth_len,
1844 (unsigned int)p->hdr.frag_len ));
1848 /* Pull the auth header and the following data into a blob. */
1849 /* NB. The offset of the auth_header is relative to the *end*
1850 * of the packet, not the start. Also, the length of the
1851 * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
1852 * as the RPC header isn't included in rpc_in_p. */
1853 if(!prs_set_offset(rpc_in_p,
1854 p->hdr.frag_len - RPC_HEADER_LEN -
1855 RPC_HDR_AUTH_LEN - p->hdr.auth_len)) {
1856 DEBUG(0,("api_pipe_bind_req: cannot move "
1858 (unsigned int)(p->hdr.frag_len -
1859 RPC_HDR_AUTH_LEN - p->hdr.auth_len) ));
1863 if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
1864 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1868 auth_type = auth_info.auth_type;
1870 /* Work out if we have to sign or seal etc. */
1871 switch (auth_info.auth_level) {
1872 case DCERPC_AUTH_LEVEL_INTEGRITY:
1873 p->auth.auth_level = DCERPC_AUTH_LEVEL_INTEGRITY;
1875 case DCERPC_AUTH_LEVEL_PRIVACY:
1876 p->auth.auth_level = DCERPC_AUTH_LEVEL_PRIVACY;
1879 DEBUG(0,("api_pipe_bind_req: unexpected auth level (%u).\n",
1880 (unsigned int)auth_info.auth_level ));
1884 ZERO_STRUCT(auth_info);
1888 case DCERPC_AUTH_TYPE_NTLMSSP:
1889 if (!pipe_ntlmssp_auth_bind(p, rpc_in_p,
1890 ss_padding_len, &auth_info, &out_auth)) {
1896 case DCERPC_AUTH_TYPE_SCHANNEL:
1897 if (!pipe_schannel_auth_bind(p, rpc_in_p,
1898 ss_padding_len, &auth_info, &out_auth)) {
1903 case DCERPC_AUTH_TYPE_SPNEGO:
1904 if (!pipe_spnego_auth_bind_negotiate(p, rpc_in_p,
1905 ss_padding_len, &auth_info, &out_auth)) {
1910 case DCERPC_AUTH_TYPE_NONE:
1911 /* Unauthenticated bind request. */
1912 /* We're finished - no more packets. */
1913 p->auth.auth_type = PIPE_AUTH_TYPE_NONE;
1914 /* We must set the pipe auth_level here also. */
1915 p->auth.auth_level = DCERPC_AUTH_LEVEL_NONE;
1916 p->pipe_bound = True;
1917 /* The session key was initialized from the SMB
1918 * session in make_internal_rpc_pipe_p */
1923 DEBUG(0,("api_pipe_bind_req: unknown auth type %x requested.\n", auth_type ));
1927 * Create the header, now we know the length.
1930 if (prs_offset(&out_auth)) {
1931 auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
1934 init_rpc_hdr(&p->hdr, DCERPC_PKT_BIND_ACK, DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST,
1936 RPC_HEADER_LEN + prs_offset(&out_hdr_ba) +
1937 ss_padding_len + prs_offset(&out_auth),
1941 * Marshall the header into the outgoing PDU.
1944 if(!smb_io_rpc_hdr("", &p->hdr, &p->out_data.frag, 0)) {
1945 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR failed.\n"));
1950 * Now add the RPC_HDR_BA and any auth needed.
1953 if(!prs_append_prs_data(&p->out_data.frag, &out_hdr_ba)) {
1954 DEBUG(0,("api_pipe_bind_req: append of RPC_HDR_BA failed.\n"));
1959 if (ss_padding_len) {
1960 char pad[SERVER_NDR_PADDING_SIZE];
1961 memset(pad, '\0', SERVER_NDR_PADDING_SIZE);
1962 if (!prs_copy_data_in(&p->out_data.frag, pad,
1964 DEBUG(0,("api_pipe_bind_req: failed to add %u "
1965 "bytes of pad data.\n",
1966 (unsigned int)ss_padding_len));
1971 if (!prs_append_prs_data( &p->out_data.frag, &out_auth)) {
1972 DEBUG(0,("api_pipe_bind_req: append of auth info failed.\n"));
1978 * Setup the lengths for the initial reply.
1981 p->out_data.data_sent_length = 0;
1982 p->out_data.current_pdu_sent = 0;
1984 prs_mem_free(&out_hdr_ba);
1985 prs_mem_free(&out_auth);
1991 prs_mem_free(&p->out_data.frag);
1992 prs_mem_free(&out_hdr_ba);
1993 prs_mem_free(&out_auth);
1994 return setup_bind_nak(p);
1997 /****************************************************************************
1998 Deal with an alter context call. Can be third part of 3 leg auth request for
2000 ****************************************************************************/
2002 bool api_pipe_alter_context(pipes_struct *p, prs_struct *rpc_in_p)
2006 RPC_HDR_AUTH auth_info;
2008 fstring ack_pipe_name;
2009 prs_struct out_hdr_ba;
2010 prs_struct out_auth;
2012 uint32_t ss_padding_len = 0;
2014 prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
2017 * Marshall directly into the outgoing PDU space. We
2018 * must do this as we need to set to the bind response
2019 * header and are never sending more than one PDU here.
2023 * Setup the memory to marshall the ba header, and the
2027 if(!prs_init(&out_hdr_ba, 1024, p->mem_ctx, MARSHALL)) {
2028 DEBUG(0,("api_pipe_alter_context: malloc out_hdr_ba failed.\n"));
2029 prs_mem_free(&p->out_data.frag);
2033 if(!prs_init(&out_auth, 1024, p->mem_ctx, MARSHALL)) {
2034 DEBUG(0,("api_pipe_alter_context: malloc out_auth failed.\n"));
2035 prs_mem_free(&p->out_data.frag);
2036 prs_mem_free(&out_hdr_ba);
2040 ZERO_STRUCT(hdr_rb);
2042 DEBUG(5,("api_pipe_alter_context: decode request. %d\n", __LINE__));
2044 /* decode the alter context request */
2045 if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_in_p, 0)) {
2046 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_RB struct.\n"));
2050 /* secondary address CAN be NULL
2051 * as the specs say it's ignored.
2052 * It MUST be NULL to have the spoolss working.
2054 fstrcpy(ack_pipe_name,"");
2056 DEBUG(5,("api_pipe_alter_context: make response. %d\n", __LINE__));
2058 assoc_gid = hdr_rb.bba.assoc_gid ? hdr_rb.bba.assoc_gid : 0x53f0;
2061 * Create the bind response struct.
2064 /* If the requested abstract synt uuid doesn't match our client pipe,
2065 reject the bind_ack & set the transfer interface synt to all 0's,
2066 ver 0 (observed when NT5 attempts to bind to abstract interfaces
2068 Needed when adding entries to a DACL from NT5 - SK */
2070 if(check_bind_req(p, &hdr_rb.rpc_context[0].abstract, &hdr_rb.rpc_context[0].transfer[0],
2071 hdr_rb.rpc_context[0].context_id )) {
2072 init_rpc_hdr_ba(&hdr_ba,
2073 RPC_MAX_PDU_FRAG_LEN,
2074 RPC_MAX_PDU_FRAG_LEN,
2078 &hdr_rb.rpc_context[0].transfer[0]);
2080 /* Rejection reason: abstract syntax not supported */
2081 init_rpc_hdr_ba(&hdr_ba, RPC_MAX_PDU_FRAG_LEN,
2082 RPC_MAX_PDU_FRAG_LEN, assoc_gid,
2083 ack_pipe_name, 0x1, 0x2, 0x1,
2084 &null_ndr_syntax_id);
2085 p->pipe_bound = False;
2092 if(!smb_io_rpc_hdr_ba("", &hdr_ba, &out_hdr_ba, 0)) {
2093 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR_BA failed.\n"));
2099 * Check if this is an authenticated alter context request.
2102 if (p->hdr.auth_len != 0) {
2104 * Decode the authentication verifier.
2107 /* Work out any padding needed before the auth footer. */
2108 if ((RPC_HEADER_LEN + prs_offset(&out_hdr_ba)) % SERVER_NDR_PADDING_SIZE) {
2109 ss_padding_len = SERVER_NDR_PADDING_SIZE -
2110 ((RPC_HEADER_LEN + prs_offset(&out_hdr_ba)) % SERVER_NDR_PADDING_SIZE);
2111 DEBUG(10,("api_pipe_alter_context: auth pad_len = %u\n",
2112 (unsigned int)ss_padding_len ));
2115 /* Quick length check. Won't catch a bad auth footer,
2116 * prevents overrun. */
2118 if (p->hdr.frag_len < RPC_HEADER_LEN + RPC_HDR_AUTH_LEN + p->hdr.auth_len) {
2119 DEBUG(0,("api_pipe_alter_context: auth_len (%u) "
2120 "too long for fragment %u.\n",
2121 (unsigned int)p->hdr.auth_len,
2122 (unsigned int)p->hdr.frag_len ));
2126 /* Pull the auth header and the following data into a blob. */
2127 /* NB. The offset of the auth_header is relative to the *end*
2128 * of the packet, not the start. Also, the length of the
2129 * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
2130 * as the RPC header isn't included in rpc_in_p. */
2131 if(!prs_set_offset(rpc_in_p,
2132 p->hdr.frag_len - RPC_HEADER_LEN -
2133 RPC_HDR_AUTH_LEN - p->hdr.auth_len)) {
2134 DEBUG(0,("api_alter_context: cannot move "
2136 (unsigned int)(p->hdr.frag_len -
2137 RPC_HDR_AUTH_LEN - p->hdr.auth_len) ));
2141 if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
2142 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_AUTH struct.\n"));
2147 * Currently only the SPNEGO auth type uses the alter ctx
2148 * response in place of the NTLMSSP auth3 type.
2151 if (auth_info.auth_type == DCERPC_AUTH_TYPE_SPNEGO) {
2152 /* We can only finish if the pipe is unbound. */
2153 if (!p->pipe_bound) {
2154 if (!pipe_spnego_auth_bind_continue(p, rpc_in_p,
2155 ss_padding_len, &auth_info, &out_auth)) {
2163 ZERO_STRUCT(auth_info);
2166 * Create the header, now we know the length.
2169 if (prs_offset(&out_auth)) {
2170 auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
2173 init_rpc_hdr(&p->hdr, DCERPC_PKT_ALTER_RESP, DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST,
2175 RPC_HEADER_LEN + prs_offset(&out_hdr_ba) + prs_offset(&out_auth),
2179 * Marshall the header into the outgoing PDU.
2182 if(!smb_io_rpc_hdr("", &p->hdr, &p->out_data.frag, 0)) {
2183 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR failed.\n"));
2188 * Now add the RPC_HDR_BA and any auth needed.
2191 if(!prs_append_prs_data(&p->out_data.frag, &out_hdr_ba)) {
2192 DEBUG(0,("api_pipe_alter_context: append of RPC_HDR_BA failed.\n"));
2197 if (ss_padding_len) {
2198 char pad[SERVER_NDR_PADDING_SIZE];
2199 memset(pad, '\0', SERVER_NDR_PADDING_SIZE);
2200 if (!prs_copy_data_in(&p->out_data.frag, pad,
2202 DEBUG(0,("api_pipe_alter_context: failed to add %u "
2203 "bytes of pad data.\n",
2204 (unsigned int)ss_padding_len));
2209 if (!prs_append_prs_data( &p->out_data.frag, &out_auth)) {
2210 DEBUG(0,("api_pipe_alter_context: append of auth info failed.\n"));
2216 * Setup the lengths for the initial reply.
2219 p->out_data.data_sent_length = 0;
2220 p->out_data.current_pdu_sent = 0;
2222 prs_mem_free(&out_hdr_ba);
2223 prs_mem_free(&out_auth);
2229 prs_mem_free(&p->out_data.frag);
2230 prs_mem_free(&out_hdr_ba);
2231 prs_mem_free(&out_auth);
2232 return setup_bind_nak(p);
2235 /****************************************************************************
2236 Deal with NTLMSSP sign & seal processing on an RPC request.
2237 ****************************************************************************/
2239 bool api_pipe_ntlmssp_auth_process(pipes_struct *p, prs_struct *rpc_in,
2240 uint32 *p_ss_padding_len, NTSTATUS *pstatus)
2242 RPC_HDR_AUTH auth_info;
2243 uint32 auth_len = p->hdr.auth_len;
2244 uint32 save_offset = prs_offset(rpc_in);
2245 AUTH_NTLMSSP_STATE *a = p->auth.a_u.auth_ntlmssp_state;
2246 unsigned char *data = NULL;
2248 unsigned char *full_packet_data = NULL;
2249 size_t full_packet_data_len;
2250 DATA_BLOB auth_blob;
2252 *pstatus = NT_STATUS_OK;
2254 if (p->auth.auth_level == DCERPC_AUTH_LEVEL_NONE || p->auth.auth_level == DCERPC_AUTH_LEVEL_CONNECT) {
2259 *pstatus = NT_STATUS_INVALID_PARAMETER;
2263 /* Ensure there's enough data for an authenticated request. */
2264 if (RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_HDR_AUTH_LEN
2265 + auth_len > p->hdr.frag_len) {
2266 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len %u is too large.\n",
2267 (unsigned int)auth_len ));
2268 *pstatus = NT_STATUS_INVALID_PARAMETER;
2273 * We need the full packet data + length (minus auth stuff) as well as the packet data + length
2274 * after the RPC header.
2275 * We need to pass in the full packet (minus auth len) to the NTLMSSP sign and check seal
2276 * functions as NTLMv2 checks the rpc headers also.
2277 * Both of these values include any auth_pad_len bytes.
2280 data = (unsigned char *)(prs_data_p(rpc_in) + RPC_HDR_REQ_LEN);
2281 data_len = (size_t)(p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN - RPC_HDR_AUTH_LEN - auth_len);
2283 full_packet_data = p->in_data.current_in_pdu;
2284 full_packet_data_len = p->hdr.frag_len - auth_len;
2286 /* Pull the auth header and the following data into a blob. */
2287 /* NB. The offset of the auth_header is relative to the *end*
2288 * of the packet, not the start. Also, the length of the
2289 * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
2290 * as the RPC header isn't included in rpc_in_p. */
2291 if(!prs_set_offset(rpc_in,
2292 p->hdr.frag_len - RPC_HEADER_LEN -
2293 RPC_HDR_AUTH_LEN - auth_len)) {
2294 DEBUG(0,("api_pipe_ntlmssp_auth_process: cannot move "
2296 (unsigned int)(p->hdr.frag_len -
2297 RPC_HDR_AUTH_LEN - auth_len) ));
2298 *pstatus = NT_STATUS_INVALID_PARAMETER;
2302 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
2303 DEBUG(0,("api_pipe_ntlmssp_auth_process: failed to "
2304 "unmarshall RPC_HDR_AUTH.\n"));
2305 *pstatus = NT_STATUS_INVALID_PARAMETER;
2309 /* Ensure auth_pad_len fits into the packet. */
2310 if (RPC_HEADER_LEN + RPC_HDR_REQ_LEN + auth_info.auth_pad_len +
2311 RPC_HDR_AUTH_LEN + auth_len > p->hdr.frag_len) {
2312 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_info.auth_pad_len "
2313 "too large (%u), auth_len (%u), frag_len = (%u).\n",
2314 (unsigned int)auth_info.auth_pad_len,
2315 (unsigned int)auth_len,
2316 (unsigned int)p->hdr.frag_len ));
2317 *pstatus = NT_STATUS_INVALID_PARAMETER;
2321 auth_blob.data = (unsigned char *)prs_data_p(rpc_in) + prs_offset(rpc_in);
2322 auth_blob.length = auth_len;
2324 switch (p->auth.auth_level) {
2325 case DCERPC_AUTH_LEVEL_PRIVACY:
2326 /* Data is encrypted. */
2327 *pstatus = ntlmssp_unseal_packet(a->ntlmssp_state,
2330 full_packet_data_len,
2332 if (!NT_STATUS_IS_OK(*pstatus)) {
2336 case DCERPC_AUTH_LEVEL_INTEGRITY:
2337 /* Data is signed. */
2338 *pstatus = ntlmssp_check_packet(a->ntlmssp_state,
2341 full_packet_data_len,
2343 if (!NT_STATUS_IS_OK(*pstatus)) {
2348 *pstatus = NT_STATUS_INVALID_PARAMETER;
2353 * Return the current pointer to the data offset.
2356 if(!prs_set_offset(rpc_in, save_offset)) {
2357 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
2358 (unsigned int)save_offset ));
2359 *pstatus = NT_STATUS_INVALID_PARAMETER;
2364 * Remember the padding length. We must remove it from the real data
2365 * stream once the sign/seal is done.
2368 *p_ss_padding_len = auth_info.auth_pad_len;
2373 /****************************************************************************
2374 Deal with schannel processing on an RPC request.
2375 ****************************************************************************/
2377 bool api_pipe_schannel_process(pipes_struct *p, prs_struct *rpc_in, uint32 *p_ss_padding_len)
2381 uint32 save_offset = prs_offset(rpc_in);
2382 RPC_HDR_AUTH auth_info;
2387 auth_len = p->hdr.auth_len;
2389 if (auth_len < RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN ||
2390 auth_len > RPC_HEADER_LEN +
2394 DEBUG(0,("Incorrect auth_len %u.\n", (unsigned int)auth_len ));
2399 * The following is that length of the data we must verify or unseal.
2400 * This doesn't include the RPC headers or the auth_len or the RPC_HDR_AUTH_LEN
2401 * preceeding the auth_data, but does include the auth_pad_len bytes.
2404 if (p->hdr.frag_len < RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_HDR_AUTH_LEN + auth_len) {
2405 DEBUG(0,("Incorrect frag %u, auth %u.\n",
2406 (unsigned int)p->hdr.frag_len,
2407 (unsigned int)auth_len ));
2411 data_len = p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN -
2412 RPC_HDR_AUTH_LEN - auth_len;
2414 DEBUG(5,("data %d auth %d\n", data_len, auth_len));
2416 /* Pull the auth header and the following data into a blob. */
2417 /* NB. The offset of the auth_header is relative to the *end*
2418 * of the packet, not the start. Also, the length of the
2419 * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
2420 * as the RPC header isn't included in rpc_in_p. */
2421 if(!prs_set_offset(rpc_in,
2422 p->hdr.frag_len - RPC_HEADER_LEN -
2423 RPC_HDR_AUTH_LEN - auth_len)) {
2424 DEBUG(0,("api_pipe_schannel_process: cannot move "
2426 (unsigned int)(p->hdr.frag_len -
2427 RPC_HDR_AUTH_LEN - auth_len) ));
2431 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
2432 DEBUG(0,("api_pipe_schannel_process: failed to "
2433 "unmarshall RPC_HDR_AUTH.\n"));
2437 /* Ensure auth_pad_len fits into the packet. */
2438 if (RPC_HEADER_LEN + RPC_HDR_REQ_LEN + auth_info.auth_pad_len +
2439 RPC_HDR_AUTH_LEN + auth_len > p->hdr.frag_len) {
2440 DEBUG(0,("api_pipe_schannel_process: auth_info.auth_pad_len "
2441 "too large (%u), auth_len (%u), frag_len = (%u).\n",
2442 (unsigned int)auth_info.auth_pad_len,
2443 (unsigned int)auth_len,
2444 (unsigned int)p->hdr.frag_len ));
2448 if (auth_info.auth_type != DCERPC_AUTH_TYPE_SCHANNEL) {
2449 DEBUG(0,("Invalid auth info %d on schannel\n",
2450 auth_info.auth_type));
2454 blob = data_blob_const(prs_data_p(rpc_in) + prs_offset(rpc_in), auth_len);
2456 if (DEBUGLEVEL >= 10) {
2457 dump_NL_AUTH_SIGNATURE(talloc_tos(), &blob);
2460 data = (uint8_t *)prs_data_p(rpc_in)+RPC_HDR_REQ_LEN;
2462 switch (auth_info.auth_level) {
2463 case DCERPC_AUTH_LEVEL_PRIVACY:
2464 status = netsec_incoming_packet(p->auth.a_u.schannel_auth,
2471 case DCERPC_AUTH_LEVEL_INTEGRITY:
2472 status = netsec_incoming_packet(p->auth.a_u.schannel_auth,
2480 status = NT_STATUS_INTERNAL_ERROR;
2484 if (!NT_STATUS_IS_OK(status)) {
2485 DEBUG(0,("failed to unseal packet: %s\n", nt_errstr(status)));
2490 * Return the current pointer to the data offset.
2493 if(!prs_set_offset(rpc_in, save_offset)) {
2494 DEBUG(0,("failed to set offset back to %u\n",
2495 (unsigned int)save_offset ));
2500 * Remember the padding length. We must remove it from the real data
2501 * stream once the sign/seal is done.
2504 *p_ss_padding_len = auth_info.auth_pad_len;
2509 /****************************************************************************
2510 Find the set of RPC functions associated with this context_id
2511 ****************************************************************************/
2513 static PIPE_RPC_FNS* find_pipe_fns_by_context( PIPE_RPC_FNS *list, uint32 context_id )
2515 PIPE_RPC_FNS *fns = NULL;
2518 DEBUG(0,("find_pipe_fns_by_context: ERROR! No context list for pipe!\n"));
2522 for (fns=list; fns; fns=fns->next ) {
2523 if ( fns->context_id == context_id )
2529 /****************************************************************************
2531 ****************************************************************************/
2533 void free_pipe_rpc_context( PIPE_RPC_FNS *list )
2535 PIPE_RPC_FNS *tmp = list;
2547 static bool api_rpcTNP(pipes_struct *p,
2548 const struct api_struct *api_rpc_cmds, int n_cmds);
2550 /****************************************************************************
2551 Find the correct RPC function to call for this request.
2552 If the pipe is authenticated then become the correct UNIX user
2553 before doing the call.
2554 ****************************************************************************/
2556 bool api_pipe_request(pipes_struct *p)
2559 bool changed_user = False;
2560 PIPE_RPC_FNS *pipe_fns;
2562 if (p->pipe_bound &&
2563 ((p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP) ||
2564 (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP))) {
2565 if(!become_authenticated_pipe_user(p)) {
2566 prs_mem_free(&p->out_data.rdata);
2569 changed_user = True;
2572 DEBUG(5, ("Requested \\PIPE\\%s\n",
2573 get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
2575 /* get the set of RPC functions for this context */
2577 pipe_fns = find_pipe_fns_by_context(p->contexts, p->hdr_req.context_id);
2580 TALLOC_CTX *frame = talloc_stackframe();
2581 ret = api_rpcTNP(p, pipe_fns->cmds, pipe_fns->n_cmds);
2585 DEBUG(0,("api_pipe_request: No rpc function table associated with context [%d] on pipe [%s]\n",
2586 p->hdr_req.context_id,
2587 get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
2591 unbecome_authenticated_pipe_user();
2597 /*******************************************************************
2598 Calls the underlying RPC function for a named pipe.
2599 ********************************************************************/
2601 static bool api_rpcTNP(pipes_struct *p,
2602 const struct api_struct *api_rpc_cmds, int n_cmds)
2605 uint32 offset1, offset2;
2607 /* interpret the command */
2608 DEBUG(4,("api_rpcTNP: %s op 0x%x - ",
2609 get_pipe_name_from_syntax(talloc_tos(), &p->syntax),
2612 if (DEBUGLEVEL >= 50) {
2614 slprintf(name, sizeof(name)-1, "in_%s",
2615 get_pipe_name_from_syntax(talloc_tos(), &p->syntax));
2616 prs_dump(name, p->hdr_req.opnum, &p->in_data.data);
2619 for (fn_num = 0; fn_num < n_cmds; fn_num++) {
2620 if (api_rpc_cmds[fn_num].opnum == p->hdr_req.opnum && api_rpc_cmds[fn_num].fn != NULL) {
2621 DEBUG(3,("api_rpcTNP: rpc command: %s\n", api_rpc_cmds[fn_num].name));
2626 if (fn_num == n_cmds) {
2628 * For an unknown RPC just return a fault PDU but
2629 * return True to allow RPC's on the pipe to continue
2630 * and not put the pipe into fault state. JRA.
2632 DEBUG(4, ("unknown\n"));
2633 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
2637 offset1 = prs_offset(&p->out_data.rdata);
2639 DEBUG(6, ("api_rpc_cmds[%d].fn == %p\n",
2640 fn_num, api_rpc_cmds[fn_num].fn));
2641 /* do the actual command */
2642 if(!api_rpc_cmds[fn_num].fn(p)) {
2643 DEBUG(0,("api_rpcTNP: %s: %s failed.\n",
2644 get_pipe_name_from_syntax(talloc_tos(), &p->syntax),
2645 api_rpc_cmds[fn_num].name));
2646 prs_mem_free(&p->out_data.rdata);
2650 if (p->bad_handle_fault_state) {
2651 DEBUG(4,("api_rpcTNP: bad handle fault return.\n"));
2652 p->bad_handle_fault_state = False;
2653 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_CONTEXT_MISMATCH));
2657 if (p->rng_fault_state) {
2658 DEBUG(4, ("api_rpcTNP: rng fault return\n"));
2659 p->rng_fault_state = False;
2660 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
2664 offset2 = prs_offset(&p->out_data.rdata);
2665 prs_set_offset(&p->out_data.rdata, offset1);
2666 if (DEBUGLEVEL >= 50) {
2668 slprintf(name, sizeof(name)-1, "out_%s",
2669 get_pipe_name_from_syntax(talloc_tos(), &p->syntax));
2670 prs_dump(name, p->hdr_req.opnum, &p->out_data.rdata);
2672 prs_set_offset(&p->out_data.rdata, offset2);
2674 DEBUG(5,("api_rpcTNP: called %s successfully\n",
2675 get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
2677 /* Check for buffer underflow in rpc parsing */
2679 if ((DEBUGLEVEL >= 10) &&
2680 (prs_offset(&p->in_data.data) != prs_data_size(&p->in_data.data))) {
2681 size_t data_len = prs_data_size(&p->in_data.data) - prs_offset(&p->in_data.data);
2682 char *data = (char *)SMB_MALLOC(data_len);
2684 DEBUG(10, ("api_rpcTNP: rpc input buffer underflow (parse error?)\n"));
2686 prs_uint8s(False, "", &p->in_data.data, 0, (unsigned char *)data, (uint32)data_len);