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"
34 #include "../libcli/auth/ntlmssp.h"
37 #define DBGC_CLASS DBGC_RPC_SRV
39 static void free_pipe_ntlmssp_auth_data(struct pipe_auth_data *auth)
41 struct 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 struct 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 = auth_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 = auth_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 struct 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 (!auth_ntlmssp_negotiated_sign(a)) {
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 (!auth_ntlmssp_negotiated_seal(a)) {
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 "
707 auth_ntlmssp_get_username(a),
708 auth_ntlmssp_get_domain(a),
709 auth_ntlmssp_get_client(a)));
711 TALLOC_FREE(p->server_info);
713 p->server_info = auth_ntlmssp_server_info(p, a);
714 if (p->server_info == NULL) {
715 DEBUG(0, ("auth_ntlmssp_server_info failed to obtain the server info for authenticated user\n"));
719 if (p->server_info->ptok == NULL) {
720 DEBUG(1,("Error: Authmodule failed to provide nt_user_token\n"));
725 * We're an authenticated bind over smb, so the session key needs to
726 * be set to "SystemLibraryDTC". Weird, but this is what Windows
727 * does. See the RPC-SAMBA3SESSIONKEY.
730 session_key = generic_session_key();
731 if (session_key.data == NULL) {
735 ret = server_info_set_session_key(p->server_info, session_key);
737 data_blob_free(&session_key);
742 /*******************************************************************
743 The switch table for the pipe names and the functions to handle them.
744 *******************************************************************/
751 struct ndr_syntax_id rpc_interface;
752 const struct api_struct *cmds;
756 static struct rpc_table *rpc_lookup;
757 static int rpc_lookup_size;
759 /*******************************************************************
760 This is the "stage3" NTLMSSP response after a bind request and reply.
761 *******************************************************************/
763 bool api_pipe_bind_auth3(pipes_struct *p, prs_struct *rpc_in_p)
765 RPC_HDR_AUTH auth_info;
768 uint32_t auth_len = p->hdr.auth_len;
772 DEBUG(5,("api_pipe_bind_auth3: decode request. %d\n", __LINE__));
775 DEBUG(0,("api_pipe_bind_auth3: No auth field sent !\n"));
779 /* 4 bytes padding. */
780 if (!prs_uint32("pad", rpc_in_p, 0, &pad)) {
781 DEBUG(0,("api_pipe_bind_auth3: unmarshall of 4 byte pad failed.\n"));
785 /* Ensure there's enough data for an authenticated request. */
786 if (RPC_HEADER_LEN + RPC_HDR_AUTH_LEN + auth_len >
788 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len "
789 "%u is too large.\n",
790 (unsigned int)auth_len ));
795 * Decode the authentication verifier response.
798 /* Pull the auth header and the following data into a blob. */
799 /* NB. The offset of the auth_header is relative to the *end*
800 * of the packet, not the start. Also, the length of the
801 * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
802 * as the RPC header isn't included in rpc_in_p. */
803 if(!prs_set_offset(rpc_in_p,
804 p->hdr.frag_len - RPC_HEADER_LEN -
805 RPC_HDR_AUTH_LEN - auth_len)) {
806 DEBUG(0,("api_pipe_bind_auth3: cannot move "
808 (unsigned int)(p->hdr.frag_len -
809 RPC_HDR_AUTH_LEN - auth_len) ));
813 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in_p, 0)) {
814 DEBUG(0,("api_pipe_bind_auth3: failed to "
815 "unmarshall RPC_HDR_AUTH.\n"));
819 /* We must NEVER look at auth_info->auth_pad_len here,
820 * as old Samba client code gets it wrong and sends it
824 if (auth_info.auth_type != DCERPC_AUTH_TYPE_NTLMSSP) {
825 DEBUG(0,("api_pipe_bind_auth3: incorrect auth type (%u).\n",
826 (unsigned int)auth_info.auth_type ));
830 blob = data_blob(NULL,p->hdr.auth_len);
832 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
833 DEBUG(0,("api_pipe_bind_auth3: Failed to pull %u bytes - the response blob.\n",
834 (unsigned int)p->hdr.auth_len ));
839 * The following call actually checks the challenge/response data.
840 * for correctness against the given DOMAIN\user name.
843 if (!pipe_ntlmssp_verify_final(p, &blob)) {
847 data_blob_free(&blob);
849 p->pipe_bound = True;
855 data_blob_free(&blob);
856 free_pipe_ntlmssp_auth_data(&p->auth);
857 p->auth.a_u.auth_ntlmssp_state = NULL;
862 /*******************************************************************
863 Marshall a bind_nak pdu.
864 *******************************************************************/
866 static bool setup_bind_nak(pipes_struct *p)
871 /* Free any memory in the current return data buffer. */
872 prs_mem_free(&p->out_data.rdata);
875 * Marshall directly into the outgoing PDU space. We
876 * must do this as we need to set to the bind response
877 * header and are never sending more than one PDU here.
880 prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
883 * Initialize a bind_nak header.
886 init_rpc_hdr(&nak_hdr, DCERPC_PKT_BIND_NAK, DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST,
887 p->hdr.call_id, RPC_HEADER_LEN + sizeof(uint16), 0);
890 * Marshall the header into the outgoing PDU.
893 if(!smb_io_rpc_hdr("", &nak_hdr, &p->out_data.frag, 0)) {
894 DEBUG(0,("setup_bind_nak: marshalling of RPC_HDR failed.\n"));
895 prs_mem_free(&p->out_data.frag);
900 * Now add the reject reason.
903 if(!prs_uint16("reject code", &p->out_data.frag, 0, &zero)) {
904 prs_mem_free(&p->out_data.frag);
908 p->out_data.data_sent_length = 0;
909 p->out_data.current_pdu_sent = 0;
911 if (p->auth.auth_data_free_func) {
912 (*p->auth.auth_data_free_func)(&p->auth);
914 p->auth.auth_level = DCERPC_AUTH_LEVEL_NONE;
915 p->auth.auth_type = PIPE_AUTH_TYPE_NONE;
916 p->pipe_bound = False;
921 /*******************************************************************
922 Marshall a fault pdu.
923 *******************************************************************/
925 bool setup_fault_pdu(pipes_struct *p, NTSTATUS status)
928 RPC_HDR_RESP hdr_resp;
929 RPC_HDR_FAULT fault_resp;
931 /* Free any memory in the current return data buffer. */
932 prs_mem_free(&p->out_data.rdata);
935 * Marshall directly into the outgoing PDU space. We
936 * must do this as we need to set to the bind response
937 * header and are never sending more than one PDU here.
940 prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
943 * Initialize a fault header.
946 init_rpc_hdr(&fault_hdr, DCERPC_PKT_FAULT, DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST | DCERPC_PFC_FLAG_DID_NOT_EXECUTE,
947 p->hdr.call_id, RPC_HEADER_LEN + RPC_HDR_RESP_LEN + RPC_HDR_FAULT_LEN, 0);
950 * Initialize the HDR_RESP and FAULT parts of the PDU.
953 memset((char *)&hdr_resp, '\0', sizeof(hdr_resp));
955 fault_resp.status = status;
956 fault_resp.reserved = 0;
959 * Marshall the header into the outgoing PDU.
962 if(!smb_io_rpc_hdr("", &fault_hdr, &p->out_data.frag, 0)) {
963 DEBUG(0,("setup_fault_pdu: marshalling of RPC_HDR failed.\n"));
964 prs_mem_free(&p->out_data.frag);
968 if(!smb_io_rpc_hdr_resp("resp", &hdr_resp, &p->out_data.frag, 0)) {
969 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_RESP.\n"));
970 prs_mem_free(&p->out_data.frag);
974 if(!smb_io_rpc_hdr_fault("fault", &fault_resp, &p->out_data.frag, 0)) {
975 DEBUG(0,("setup_fault_pdu: failed to marshall RPC_HDR_FAULT.\n"));
976 prs_mem_free(&p->out_data.frag);
980 p->out_data.data_sent_length = 0;
981 p->out_data.current_pdu_sent = 0;
987 /*******************************************************************
988 Marshall a cancel_ack pdu.
989 We should probably check the auth-verifier here.
990 *******************************************************************/
992 bool setup_cancel_ack_reply(pipes_struct *p, prs_struct *rpc_in_p)
994 prs_struct outgoing_pdu;
995 RPC_HDR ack_reply_hdr;
997 /* Free any memory in the current return data buffer. */
998 prs_mem_free(&p->out_data.rdata);
1001 * Marshall directly into the outgoing PDU space. We
1002 * must do this as we need to set to the bind response
1003 * header and are never sending more than one PDU here.
1006 prs_init_empty( &outgoing_pdu, p->mem_ctx, MARSHALL);
1007 prs_give_memory( &outgoing_pdu, (char *)p->out_data.current_pdu, sizeof(p->out_data.current_pdu), False);
1010 * Initialize a cancel_ack header.
1013 init_rpc_hdr(&ack_reply_hdr, DCERPC_PKT_CANCEL_ACK, DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST,
1014 p->hdr.call_id, RPC_HEADER_LEN, 0);
1017 * Marshall the header into the outgoing PDU.
1020 if(!smb_io_rpc_hdr("", &ack_reply_hdr, &outgoing_pdu, 0)) {
1021 DEBUG(0,("setup_cancel_ack_reply: marshalling of RPC_HDR failed.\n"));
1022 prs_mem_free(&outgoing_pdu);
1026 p->out_data.data_sent_length = 0;
1027 p->out_data.current_pdu_len = prs_offset(&outgoing_pdu);
1028 p->out_data.current_pdu_sent = 0;
1030 prs_mem_free(&outgoing_pdu);
1035 /*******************************************************************
1036 Ensure a bind request has the correct abstract & transfer interface.
1037 Used to reject unknown binds from Win2k.
1038 *******************************************************************/
1040 static bool check_bind_req(struct pipes_struct *p,
1041 struct ndr_syntax_id* abstract,
1042 struct ndr_syntax_id* transfer,
1046 struct pipe_rpc_fns *context_fns;
1048 DEBUG(3,("check_bind_req for %s\n",
1049 get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
1051 /* we have to check all now since win2k introduced a new UUID on the lsaprpc pipe */
1053 for (i=0; i<rpc_lookup_size; i++) {
1054 DEBUGADD(10, ("checking %s\n", rpc_lookup[i].pipe.clnt));
1055 if (ndr_syntax_id_equal(
1056 abstract, &rpc_lookup[i].rpc_interface)
1057 && ndr_syntax_id_equal(
1058 transfer, &ndr_transfer_syntax)) {
1063 if (i == rpc_lookup_size) {
1067 context_fns = SMB_MALLOC_P(struct pipe_rpc_fns);
1068 if (context_fns == NULL) {
1069 DEBUG(0,("check_bind_req: malloc() failed!\n"));
1073 context_fns->cmds = rpc_lookup[i].cmds;
1074 context_fns->n_cmds = rpc_lookup[i].n_cmds;
1075 context_fns->context_id = context_id;
1077 /* add to the list of open contexts */
1079 DLIST_ADD( p->contexts, context_fns );
1084 /*******************************************************************
1085 Register commands to an RPC pipe
1086 *******************************************************************/
1088 NTSTATUS rpc_srv_register(int version, const char *clnt, const char *srv,
1089 const struct ndr_interface_table *iface,
1090 const struct api_struct *cmds, int size)
1092 struct rpc_table *rpc_entry;
1094 if (!clnt || !srv || !cmds) {
1095 return NT_STATUS_INVALID_PARAMETER;
1098 if (version != SMB_RPC_INTERFACE_VERSION) {
1099 DEBUG(0,("Can't register rpc commands!\n"
1100 "You tried to register a rpc module with SMB_RPC_INTERFACE_VERSION %d"
1101 ", while this version of samba uses version %d!\n",
1102 version,SMB_RPC_INTERFACE_VERSION));
1103 return NT_STATUS_OBJECT_TYPE_MISMATCH;
1108 * we still need to make sure that don't register the same commands twice!!!
1113 /* We use a temporary variable because this call can fail and
1114 rpc_lookup will still be valid afterwards. It could then succeed if
1115 called again later */
1117 rpc_entry = SMB_REALLOC_ARRAY_KEEP_OLD_ON_ERROR(rpc_lookup, struct rpc_table, rpc_lookup_size);
1118 if (NULL == rpc_entry) {
1120 DEBUG(0, ("rpc_pipe_register_commands: memory allocation failed\n"));
1121 return NT_STATUS_NO_MEMORY;
1123 rpc_lookup = rpc_entry;
1126 rpc_entry = rpc_lookup + (rpc_lookup_size - 1);
1127 ZERO_STRUCTP(rpc_entry);
1128 rpc_entry->pipe.clnt = SMB_STRDUP(clnt);
1129 rpc_entry->pipe.srv = SMB_STRDUP(srv);
1130 rpc_entry->rpc_interface = iface->syntax_id;
1131 rpc_entry->cmds = cmds;
1132 rpc_entry->n_cmds = size;
1134 return NT_STATUS_OK;
1138 * Is a named pipe known?
1139 * @param[in] cli_filename The pipe name requested by the client
1140 * @result Do we want to serve this?
1142 bool is_known_pipename(const char *cli_filename, struct ndr_syntax_id *syntax)
1144 const char *pipename = cli_filename;
1148 if (strnequal(pipename, "\\PIPE\\", 6)) {
1152 if (*pipename == '\\') {
1156 if (lp_disable_spoolss() && strequal(pipename, "spoolss")) {
1157 DEBUG(10, ("refusing spoolss access\n"));
1161 for (i=0; i<rpc_lookup_size; i++) {
1162 if (strequal(pipename, rpc_lookup[i].pipe.clnt)) {
1163 *syntax = rpc_lookup[i].rpc_interface;
1168 status = smb_probe_module("rpc", pipename);
1169 if (!NT_STATUS_IS_OK(status)) {
1170 DEBUG(10, ("is_known_pipename: %s unknown\n", cli_filename));
1173 DEBUG(10, ("is_known_pipename: %s loaded dynamically\n", pipename));
1176 * Scan the list again for the interface id
1179 for (i=0; i<rpc_lookup_size; i++) {
1180 if (strequal(pipename, rpc_lookup[i].pipe.clnt)) {
1181 *syntax = rpc_lookup[i].rpc_interface;
1186 DEBUG(10, ("is_known_pipename: pipe %s did not register itself!\n",
1192 /*******************************************************************
1193 Handle a SPNEGO krb5 bind auth.
1194 *******************************************************************/
1196 static bool pipe_spnego_auth_bind_kerberos(pipes_struct *p, prs_struct *rpc_in_p, RPC_HDR_AUTH *pauth_info,
1197 DATA_BLOB *psecblob, prs_struct *pout_auth)
1202 /*******************************************************************
1203 Handle the first part of a SPNEGO bind auth.
1204 *******************************************************************/
1206 static bool pipe_spnego_auth_bind_negotiate(pipes_struct *p, prs_struct *rpc_in_p,
1207 uint32_t ss_padding_len,
1208 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1214 char *OIDs[ASN1_MAX_OIDS];
1217 bool got_kerberos_mechanism = false;
1218 struct auth_ntlmssp_state *a = NULL;
1219 RPC_HDR_AUTH auth_info;
1221 ZERO_STRUCT(secblob);
1223 ZERO_STRUCT(response);
1225 /* Grab the SPNEGO blob. */
1226 blob = data_blob(NULL,p->hdr.auth_len);
1228 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
1229 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to pull %u bytes - the SPNEGO auth header.\n",
1230 (unsigned int)p->hdr.auth_len ));
1234 if (blob.data[0] != ASN1_APPLICATION(0)) {
1238 /* parse out the OIDs and the first sec blob */
1239 if (!parse_negTokenTarg(blob, OIDs, &secblob)) {
1240 DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to parse the security blob.\n"));
1244 if (strcmp(OID_KERBEROS5, OIDs[0]) == 0 || strcmp(OID_KERBEROS5_OLD, OIDs[0]) == 0) {
1245 got_kerberos_mechanism = true;
1248 for (i=0;OIDs[i];i++) {
1249 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got OID %s\n", OIDs[i]));
1250 TALLOC_FREE(OIDs[i]);
1252 DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got secblob of size %lu\n", (unsigned long)secblob.length));
1254 if ( got_kerberos_mechanism && ((lp_security()==SEC_ADS) || USE_KERBEROS_KEYTAB) ) {
1255 bool ret = pipe_spnego_auth_bind_kerberos(p, rpc_in_p, pauth_info, &secblob, pout_auth);
1256 data_blob_free(&secblob);
1257 data_blob_free(&blob);
1261 if (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP && p->auth.a_u.auth_ntlmssp_state) {
1262 /* Free any previous auth type. */
1263 free_pipe_ntlmssp_auth_data(&p->auth);
1266 if (!got_kerberos_mechanism) {
1267 /* Initialize the NTLM engine. */
1268 status = auth_ntlmssp_start(&a);
1269 if (!NT_STATUS_IS_OK(status)) {
1274 * Pass the first security blob of data to it.
1275 * This can return an error or NT_STATUS_MORE_PROCESSING_REQUIRED
1276 * which means we need another packet to complete the bind.
1279 status = auth_ntlmssp_update(a, secblob, &chal);
1281 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1282 DEBUG(3,("pipe_spnego_auth_bind_negotiate: auth_ntlmssp_update failed.\n"));
1286 /* Generate the response blob we need for step 2 of the bind. */
1287 response = spnego_gen_auth_response(&chal, status, OID_NTLMSSP);
1290 * SPNEGO negotiate down to NTLMSSP. The subsequent
1291 * code to process follow-up packets is not complete
1294 response = spnego_gen_auth_response(NULL,
1295 NT_STATUS_MORE_PROCESSING_REQUIRED,
1299 /* auth_pad_len will be handled by the caller */
1301 /* Copy the blob into the pout_auth parse struct */
1302 init_rpc_hdr_auth(&auth_info, DCERPC_AUTH_TYPE_SPNEGO,
1303 pauth_info->auth_level, ss_padding_len, 1);
1304 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1305 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of RPC_HDR_AUTH failed.\n"));
1309 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1310 DEBUG(0,("pipe_spnego_auth_bind_negotiate: marshalling of data blob failed.\n"));
1314 p->auth.a_u.auth_ntlmssp_state = a;
1315 p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
1316 p->auth.auth_type = PIPE_AUTH_TYPE_SPNEGO_NTLMSSP;
1318 data_blob_free(&blob);
1319 data_blob_free(&secblob);
1320 data_blob_free(&chal);
1321 data_blob_free(&response);
1323 /* We can't set pipe_bound True yet - we need an RPC_ALTER_CONTEXT response packet... */
1328 data_blob_free(&blob);
1329 data_blob_free(&secblob);
1330 data_blob_free(&chal);
1331 data_blob_free(&response);
1333 p->auth.a_u.auth_ntlmssp_state = NULL;
1338 /*******************************************************************
1339 Handle the second part of a SPNEGO bind auth.
1340 *******************************************************************/
1342 static bool pipe_spnego_auth_bind_continue(pipes_struct *p, prs_struct *rpc_in_p,
1343 uint32_t ss_padding_len,
1344 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1346 RPC_HDR_AUTH auth_info;
1347 DATA_BLOB spnego_blob;
1348 DATA_BLOB auth_blob;
1349 DATA_BLOB auth_reply;
1351 struct auth_ntlmssp_state *a = p->auth.a_u.auth_ntlmssp_state;
1353 ZERO_STRUCT(spnego_blob);
1354 ZERO_STRUCT(auth_blob);
1355 ZERO_STRUCT(auth_reply);
1356 ZERO_STRUCT(response);
1359 * NB. If we've negotiated down from krb5 to NTLMSSP we'll currently
1360 * fail here as 'a' == NULL.
1362 if (p->auth.auth_type != PIPE_AUTH_TYPE_SPNEGO_NTLMSSP || !a) {
1363 DEBUG(0,("pipe_spnego_auth_bind_continue: not in NTLMSSP auth state.\n"));
1367 /* Grab the SPNEGO blob. */
1368 spnego_blob = data_blob(NULL,p->hdr.auth_len);
1370 if (!prs_copy_data_out((char *)spnego_blob.data, rpc_in_p, p->hdr.auth_len)) {
1371 DEBUG(0,("pipe_spnego_auth_bind_continue: Failed to pull %u bytes - the SPNEGO auth header.\n",
1372 (unsigned int)p->hdr.auth_len ));
1376 if (spnego_blob.data[0] != ASN1_CONTEXT(1)) {
1377 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob type.\n"));
1381 if (!spnego_parse_auth(spnego_blob, &auth_blob)) {
1382 DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob.\n"));
1387 * The following call actually checks the challenge/response data.
1388 * for correctness against the given DOMAIN\user name.
1391 if (!pipe_ntlmssp_verify_final(p, &auth_blob)) {
1395 data_blob_free(&spnego_blob);
1396 data_blob_free(&auth_blob);
1398 /* Generate the spnego "accept completed" blob - no incoming data. */
1399 response = spnego_gen_auth_response(&auth_reply, NT_STATUS_OK, OID_NTLMSSP);
1401 /* FIXME - add auth_pad_len here ! */
1403 /* Copy the blob into the pout_auth parse struct */
1404 init_rpc_hdr_auth(&auth_info, DCERPC_AUTH_TYPE_SPNEGO,
1405 pauth_info->auth_level, ss_padding_len, 1);
1406 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1407 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of RPC_HDR_AUTH failed.\n"));
1411 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1412 DEBUG(0,("pipe_spnego_auth_bind_continue: marshalling of data blob failed.\n"));
1416 data_blob_free(&auth_reply);
1417 data_blob_free(&response);
1419 p->pipe_bound = True;
1425 data_blob_free(&spnego_blob);
1426 data_blob_free(&auth_blob);
1427 data_blob_free(&auth_reply);
1428 data_blob_free(&response);
1430 free_pipe_ntlmssp_auth_data(&p->auth);
1431 p->auth.a_u.auth_ntlmssp_state = NULL;
1436 /*******************************************************************
1437 Handle an schannel bind auth.
1438 *******************************************************************/
1440 static bool pipe_schannel_auth_bind(pipes_struct *p, prs_struct *rpc_in_p,
1441 uint32_t ss_padding_len,
1442 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1444 RPC_HDR_AUTH auth_info;
1445 struct NL_AUTH_MESSAGE neg;
1446 struct NL_AUTH_MESSAGE reply;
1449 struct netlogon_creds_CredentialState *creds;
1450 DATA_BLOB session_key;
1451 enum ndr_err_code ndr_err;
1454 blob = data_blob_const(prs_data_p(rpc_in_p) + prs_offset(rpc_in_p),
1455 prs_data_size(rpc_in_p));
1457 ndr_err = ndr_pull_struct_blob(&blob, talloc_tos(), &neg,
1458 (ndr_pull_flags_fn_t)ndr_pull_NL_AUTH_MESSAGE);
1459 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1460 DEBUG(0,("pipe_schannel_auth_bind: Could not unmarshal SCHANNEL auth neg\n"));
1464 if (DEBUGLEVEL >= 10) {
1465 NDR_PRINT_DEBUG(NL_AUTH_MESSAGE, &neg);
1468 if (!(neg.Flags & NL_FLAG_OEM_NETBIOS_COMPUTER_NAME)) {
1469 DEBUG(0,("pipe_schannel_auth_bind: Did not receive netbios computer name\n"));
1474 * The neg.oem_netbios_computer.a key here must match the remote computer name
1475 * given in the DOM_CLNT_SRV.uni_comp_name used on all netlogon pipe
1476 * operations that use credentials.
1480 status = schannel_get_creds_state(p, lp_private_dir(),
1481 neg.oem_netbios_computer.a, &creds);
1484 if (!NT_STATUS_IS_OK(status)) {
1485 DEBUG(0, ("pipe_schannel_auth_bind: Attempt to bind using schannel without successful serverauth2\n"));
1489 p->auth.a_u.schannel_auth = talloc(p, struct schannel_state);
1490 if (!p->auth.a_u.schannel_auth) {
1495 p->auth.a_u.schannel_auth->state = SCHANNEL_STATE_START;
1496 p->auth.a_u.schannel_auth->seq_num = 0;
1497 p->auth.a_u.schannel_auth->initiator = false;
1498 p->auth.a_u.schannel_auth->creds = creds;
1501 * JRA. Should we also copy the schannel session key into the pipe session key p->session_key
1502 * here ? We do that for NTLMSSP, but the session key is already set up from the vuser
1503 * struct of the person who opened the pipe. I need to test this further. JRA.
1505 * VL. As we are mapping this to guest set the generic key
1506 * "SystemLibraryDTC" key here. It's a bit difficult to test against
1507 * W2k3, as it does not allow schannel binds against SAMR and LSA
1511 session_key = generic_session_key();
1512 if (session_key.data == NULL) {
1513 DEBUG(0, ("pipe_schannel_auth_bind: Could not alloc session"
1518 ret = server_info_set_session_key(p->server_info, session_key);
1520 data_blob_free(&session_key);
1523 DEBUG(0, ("server_info_set_session_key failed\n"));
1527 init_rpc_hdr_auth(&auth_info, DCERPC_AUTH_TYPE_SCHANNEL,
1528 pauth_info->auth_level, ss_padding_len, 1);
1529 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1530 DEBUG(0,("pipe_schannel_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1534 /*** SCHANNEL verifier ***/
1536 reply.MessageType = NL_NEGOTIATE_RESPONSE;
1538 reply.Buffer.dummy = 5; /* ??? actually I don't think
1539 * this has any meaning
1542 ndr_err = ndr_push_struct_blob(&blob, talloc_tos(), &reply,
1543 (ndr_push_flags_fn_t)ndr_push_NL_AUTH_MESSAGE);
1544 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1545 DEBUG(0,("Failed to marshall NL_AUTH_MESSAGE.\n"));
1549 if (DEBUGLEVEL >= 10) {
1550 NDR_PRINT_DEBUG(NL_AUTH_MESSAGE, &reply);
1553 if (!prs_copy_data_in(pout_auth, (const char *)blob.data, blob.length)) {
1557 DEBUG(10,("pipe_schannel_auth_bind: schannel auth: domain [%s] myname [%s]\n",
1558 neg.oem_netbios_domain.a, neg.oem_netbios_computer.a));
1560 /* We're finished with this bind - no more packets. */
1561 p->auth.auth_data_free_func = NULL;
1562 p->auth.auth_type = PIPE_AUTH_TYPE_SCHANNEL;
1564 p->pipe_bound = True;
1569 /*******************************************************************
1570 Handle an NTLMSSP bind auth.
1571 *******************************************************************/
1573 static bool pipe_ntlmssp_auth_bind(pipes_struct *p, prs_struct *rpc_in_p,
1574 uint32_t ss_padding_len,
1575 RPC_HDR_AUTH *pauth_info, prs_struct *pout_auth)
1577 RPC_HDR_AUTH auth_info;
1581 struct auth_ntlmssp_state *a = NULL;
1584 ZERO_STRUCT(response);
1586 /* Grab the NTLMSSP blob. */
1587 blob = data_blob(NULL,p->hdr.auth_len);
1589 if (!prs_copy_data_out((char *)blob.data, rpc_in_p, p->hdr.auth_len)) {
1590 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to pull %u bytes - the NTLM auth header.\n",
1591 (unsigned int)p->hdr.auth_len ));
1595 if (strncmp((char *)blob.data, "NTLMSSP", 7) != 0) {
1596 DEBUG(0,("pipe_ntlmssp_auth_bind: Failed to read NTLMSSP in blob\n"));
1600 /* We have an NTLMSSP blob. */
1601 status = auth_ntlmssp_start(&a);
1602 if (!NT_STATUS_IS_OK(status)) {
1603 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_start failed: %s\n",
1604 nt_errstr(status) ));
1608 status = auth_ntlmssp_update(a, blob, &response);
1609 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1610 DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_update failed: %s\n",
1611 nt_errstr(status) ));
1615 data_blob_free(&blob);
1617 /* Copy the blob into the pout_auth parse struct */
1618 init_rpc_hdr_auth(&auth_info, DCERPC_AUTH_TYPE_NTLMSSP,
1619 pauth_info->auth_level, ss_padding_len, 1);
1620 if(!smb_io_rpc_hdr_auth("", &auth_info, pout_auth, 0)) {
1621 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of RPC_HDR_AUTH failed.\n"));
1625 if (!prs_copy_data_in(pout_auth, (char *)response.data, response.length)) {
1626 DEBUG(0,("pipe_ntlmssp_auth_bind: marshalling of data blob failed.\n"));
1630 p->auth.a_u.auth_ntlmssp_state = a;
1631 p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
1632 p->auth.auth_type = PIPE_AUTH_TYPE_NTLMSSP;
1634 data_blob_free(&blob);
1635 data_blob_free(&response);
1637 DEBUG(10,("pipe_ntlmssp_auth_bind: NTLMSSP auth started\n"));
1639 /* We can't set pipe_bound True yet - we need an DCERPC_PKT_AUTH3 response packet... */
1644 data_blob_free(&blob);
1645 data_blob_free(&response);
1647 free_pipe_ntlmssp_auth_data(&p->auth);
1648 p->auth.a_u.auth_ntlmssp_state = NULL;
1652 /*******************************************************************
1653 Respond to a pipe bind request.
1654 *******************************************************************/
1656 bool api_pipe_bind_req(pipes_struct *p, prs_struct *rpc_in_p)
1660 RPC_HDR_AUTH auth_info;
1662 fstring ack_pipe_name;
1663 prs_struct out_hdr_ba;
1664 prs_struct out_auth;
1667 unsigned int auth_type = DCERPC_AUTH_TYPE_NONE;
1668 uint32_t ss_padding_len = 0;
1670 /* No rebinds on a bound pipe - use alter context. */
1671 if (p->pipe_bound) {
1672 DEBUG(2,("api_pipe_bind_req: rejecting bind request on bound "
1674 get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
1675 return setup_bind_nak(p);
1678 prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
1681 * Marshall directly into the outgoing PDU space. We
1682 * must do this as we need to set to the bind response
1683 * header and are never sending more than one PDU here.
1687 * Setup the memory to marshall the ba header, and the
1691 if(!prs_init(&out_hdr_ba, 1024, p->mem_ctx, MARSHALL)) {
1692 DEBUG(0,("api_pipe_bind_req: malloc out_hdr_ba failed.\n"));
1693 prs_mem_free(&p->out_data.frag);
1697 if(!prs_init(&out_auth, 1024, p->mem_ctx, MARSHALL)) {
1698 DEBUG(0,("api_pipe_bind_req: malloc out_auth failed.\n"));
1699 prs_mem_free(&p->out_data.frag);
1700 prs_mem_free(&out_hdr_ba);
1704 DEBUG(5,("api_pipe_bind_req: decode request. %d\n", __LINE__));
1706 ZERO_STRUCT(hdr_rb);
1708 /* decode the bind request */
1710 if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_in_p, 0)) {
1711 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_RB "
1716 if (hdr_rb.num_contexts == 0) {
1717 DEBUG(0, ("api_pipe_bind_req: no rpc contexts around\n"));
1722 * Try and find the correct pipe name to ensure
1723 * that this is a pipe name we support.
1726 for (i = 0; i < rpc_lookup_size; i++) {
1727 if (ndr_syntax_id_equal(&rpc_lookup[i].rpc_interface,
1728 &hdr_rb.rpc_context[0].abstract)) {
1729 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1730 rpc_lookup[i].pipe.clnt, rpc_lookup[i].pipe.srv));
1735 if (i == rpc_lookup_size) {
1738 status = smb_probe_module(
1739 "rpc", get_pipe_name_from_syntax(
1741 &hdr_rb.rpc_context[0].abstract));
1743 if (NT_STATUS_IS_ERR(status)) {
1744 DEBUG(3,("api_pipe_bind_req: Unknown pipe name %s in bind request.\n",
1745 get_pipe_name_from_syntax(
1747 &hdr_rb.rpc_context[0].abstract)));
1748 prs_mem_free(&p->out_data.frag);
1749 prs_mem_free(&out_hdr_ba);
1750 prs_mem_free(&out_auth);
1752 return setup_bind_nak(p);
1755 for (i = 0; i < rpc_lookup_size; i++) {
1756 if (strequal(rpc_lookup[i].pipe.clnt,
1757 get_pipe_name_from_syntax(talloc_tos(),
1759 DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
1760 rpc_lookup[i].pipe.clnt, rpc_lookup[i].pipe.srv));
1765 if (i == rpc_lookup_size) {
1766 DEBUG(0, ("module %s doesn't provide functions for "
1768 get_pipe_name_from_syntax(talloc_tos(),
1770 get_pipe_name_from_syntax(talloc_tos(),
1776 /* name has to be \PIPE\xxxxx */
1777 fstrcpy(ack_pipe_name, "\\PIPE\\");
1778 fstrcat(ack_pipe_name, rpc_lookup[i].pipe.srv);
1780 DEBUG(5,("api_pipe_bind_req: make response. %d\n", __LINE__));
1782 assoc_gid = hdr_rb.bba.assoc_gid ? hdr_rb.bba.assoc_gid : 0x53f0;
1785 * Create the bind response struct.
1788 /* If the requested abstract synt uuid doesn't match our client pipe,
1789 reject the bind_ack & set the transfer interface synt to all 0's,
1790 ver 0 (observed when NT5 attempts to bind to abstract interfaces
1792 Needed when adding entries to a DACL from NT5 - SK */
1794 if(check_bind_req(p, &hdr_rb.rpc_context[0].abstract, &hdr_rb.rpc_context[0].transfer[0],
1795 hdr_rb.rpc_context[0].context_id )) {
1796 init_rpc_hdr_ba(&hdr_ba,
1797 RPC_MAX_PDU_FRAG_LEN,
1798 RPC_MAX_PDU_FRAG_LEN,
1802 &hdr_rb.rpc_context[0].transfer[0]);
1804 /* Rejection reason: abstract syntax not supported */
1805 init_rpc_hdr_ba(&hdr_ba, RPC_MAX_PDU_FRAG_LEN,
1806 RPC_MAX_PDU_FRAG_LEN, assoc_gid,
1807 ack_pipe_name, 0x1, 0x2, 0x1,
1808 &null_ndr_syntax_id);
1809 p->pipe_bound = False;
1816 if(!smb_io_rpc_hdr_ba("", &hdr_ba, &out_hdr_ba, 0)) {
1817 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR_BA failed.\n"));
1822 * Check if this is an authenticated bind request.
1825 if (p->hdr.auth_len) {
1827 * Decode the authentication verifier.
1830 /* Work out any padding needed before the auth footer. */
1831 if ((RPC_HEADER_LEN + prs_offset(&out_hdr_ba)) % SERVER_NDR_PADDING_SIZE) {
1832 ss_padding_len = SERVER_NDR_PADDING_SIZE -
1833 ((RPC_HEADER_LEN + prs_offset(&out_hdr_ba)) % SERVER_NDR_PADDING_SIZE);
1834 DEBUG(10,("api_pipe_bind_req: auth pad_len = %u\n",
1835 (unsigned int)ss_padding_len ));
1838 /* Quick length check. Won't catch a bad auth footer,
1839 * prevents overrun. */
1841 if (p->hdr.frag_len < RPC_HEADER_LEN + RPC_HDR_AUTH_LEN + p->hdr.auth_len) {
1842 DEBUG(0,("api_pipe_bind_req: auth_len (%u) "
1843 "too long for fragment %u.\n",
1844 (unsigned int)p->hdr.auth_len,
1845 (unsigned int)p->hdr.frag_len ));
1849 /* Pull the auth header and the following data into a blob. */
1850 /* NB. The offset of the auth_header is relative to the *end*
1851 * of the packet, not the start. Also, the length of the
1852 * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
1853 * as the RPC header isn't included in rpc_in_p. */
1854 if(!prs_set_offset(rpc_in_p,
1855 p->hdr.frag_len - RPC_HEADER_LEN -
1856 RPC_HDR_AUTH_LEN - p->hdr.auth_len)) {
1857 DEBUG(0,("api_pipe_bind_req: cannot move "
1859 (unsigned int)(p->hdr.frag_len -
1860 RPC_HDR_AUTH_LEN - p->hdr.auth_len) ));
1864 if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
1865 DEBUG(0,("api_pipe_bind_req: unable to unmarshall RPC_HDR_AUTH struct.\n"));
1869 auth_type = auth_info.auth_type;
1871 /* Work out if we have to sign or seal etc. */
1872 switch (auth_info.auth_level) {
1873 case DCERPC_AUTH_LEVEL_INTEGRITY:
1874 p->auth.auth_level = DCERPC_AUTH_LEVEL_INTEGRITY;
1876 case DCERPC_AUTH_LEVEL_PRIVACY:
1877 p->auth.auth_level = DCERPC_AUTH_LEVEL_PRIVACY;
1880 DEBUG(0,("api_pipe_bind_req: unexpected auth level (%u).\n",
1881 (unsigned int)auth_info.auth_level ));
1885 ZERO_STRUCT(auth_info);
1889 case DCERPC_AUTH_TYPE_NTLMSSP:
1890 if (!pipe_ntlmssp_auth_bind(p, rpc_in_p,
1891 ss_padding_len, &auth_info, &out_auth)) {
1897 case DCERPC_AUTH_TYPE_SCHANNEL:
1898 if (!pipe_schannel_auth_bind(p, rpc_in_p,
1899 ss_padding_len, &auth_info, &out_auth)) {
1904 case DCERPC_AUTH_TYPE_SPNEGO:
1905 if (!pipe_spnego_auth_bind_negotiate(p, rpc_in_p,
1906 ss_padding_len, &auth_info, &out_auth)) {
1911 case DCERPC_AUTH_TYPE_NONE:
1912 /* Unauthenticated bind request. */
1913 /* We're finished - no more packets. */
1914 p->auth.auth_type = PIPE_AUTH_TYPE_NONE;
1915 /* We must set the pipe auth_level here also. */
1916 p->auth.auth_level = DCERPC_AUTH_LEVEL_NONE;
1917 p->pipe_bound = True;
1918 /* The session key was initialized from the SMB
1919 * session in make_internal_rpc_pipe_p */
1924 DEBUG(0,("api_pipe_bind_req: unknown auth type %x requested.\n", auth_type ));
1928 * Create the header, now we know the length.
1931 if (prs_offset(&out_auth)) {
1932 auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
1935 init_rpc_hdr(&p->hdr, DCERPC_PKT_BIND_ACK, DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST,
1937 RPC_HEADER_LEN + prs_offset(&out_hdr_ba) +
1938 ss_padding_len + prs_offset(&out_auth),
1942 * Marshall the header into the outgoing PDU.
1945 if(!smb_io_rpc_hdr("", &p->hdr, &p->out_data.frag, 0)) {
1946 DEBUG(0,("api_pipe_bind_req: marshalling of RPC_HDR failed.\n"));
1951 * Now add the RPC_HDR_BA and any auth needed.
1954 if(!prs_append_prs_data(&p->out_data.frag, &out_hdr_ba)) {
1955 DEBUG(0,("api_pipe_bind_req: append of RPC_HDR_BA failed.\n"));
1960 if (ss_padding_len) {
1961 char pad[SERVER_NDR_PADDING_SIZE];
1962 memset(pad, '\0', SERVER_NDR_PADDING_SIZE);
1963 if (!prs_copy_data_in(&p->out_data.frag, pad,
1965 DEBUG(0,("api_pipe_bind_req: failed to add %u "
1966 "bytes of pad data.\n",
1967 (unsigned int)ss_padding_len));
1972 if (!prs_append_prs_data( &p->out_data.frag, &out_auth)) {
1973 DEBUG(0,("api_pipe_bind_req: append of auth info failed.\n"));
1979 * Setup the lengths for the initial reply.
1982 p->out_data.data_sent_length = 0;
1983 p->out_data.current_pdu_sent = 0;
1985 prs_mem_free(&out_hdr_ba);
1986 prs_mem_free(&out_auth);
1992 prs_mem_free(&p->out_data.frag);
1993 prs_mem_free(&out_hdr_ba);
1994 prs_mem_free(&out_auth);
1995 return setup_bind_nak(p);
1998 /****************************************************************************
1999 Deal with an alter context call. Can be third part of 3 leg auth request for
2001 ****************************************************************************/
2003 bool api_pipe_alter_context(pipes_struct *p, prs_struct *rpc_in_p)
2007 RPC_HDR_AUTH auth_info;
2009 fstring ack_pipe_name;
2010 prs_struct out_hdr_ba;
2011 prs_struct out_auth;
2013 uint32_t ss_padding_len = 0;
2015 prs_init_empty(&p->out_data.frag, p->mem_ctx, MARSHALL);
2018 * Marshall directly into the outgoing PDU space. We
2019 * must do this as we need to set to the bind response
2020 * header and are never sending more than one PDU here.
2024 * Setup the memory to marshall the ba header, and the
2028 if(!prs_init(&out_hdr_ba, 1024, p->mem_ctx, MARSHALL)) {
2029 DEBUG(0,("api_pipe_alter_context: malloc out_hdr_ba failed.\n"));
2030 prs_mem_free(&p->out_data.frag);
2034 if(!prs_init(&out_auth, 1024, p->mem_ctx, MARSHALL)) {
2035 DEBUG(0,("api_pipe_alter_context: malloc out_auth failed.\n"));
2036 prs_mem_free(&p->out_data.frag);
2037 prs_mem_free(&out_hdr_ba);
2041 ZERO_STRUCT(hdr_rb);
2043 DEBUG(5,("api_pipe_alter_context: decode request. %d\n", __LINE__));
2045 /* decode the alter context request */
2046 if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_in_p, 0)) {
2047 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_RB struct.\n"));
2051 /* secondary address CAN be NULL
2052 * as the specs say it's ignored.
2053 * It MUST be NULL to have the spoolss working.
2055 fstrcpy(ack_pipe_name,"");
2057 DEBUG(5,("api_pipe_alter_context: make response. %d\n", __LINE__));
2059 assoc_gid = hdr_rb.bba.assoc_gid ? hdr_rb.bba.assoc_gid : 0x53f0;
2062 * Create the bind response struct.
2065 /* If the requested abstract synt uuid doesn't match our client pipe,
2066 reject the bind_ack & set the transfer interface synt to all 0's,
2067 ver 0 (observed when NT5 attempts to bind to abstract interfaces
2069 Needed when adding entries to a DACL from NT5 - SK */
2071 if(check_bind_req(p, &hdr_rb.rpc_context[0].abstract, &hdr_rb.rpc_context[0].transfer[0],
2072 hdr_rb.rpc_context[0].context_id )) {
2073 init_rpc_hdr_ba(&hdr_ba,
2074 RPC_MAX_PDU_FRAG_LEN,
2075 RPC_MAX_PDU_FRAG_LEN,
2079 &hdr_rb.rpc_context[0].transfer[0]);
2081 /* Rejection reason: abstract syntax not supported */
2082 init_rpc_hdr_ba(&hdr_ba, RPC_MAX_PDU_FRAG_LEN,
2083 RPC_MAX_PDU_FRAG_LEN, assoc_gid,
2084 ack_pipe_name, 0x1, 0x2, 0x1,
2085 &null_ndr_syntax_id);
2086 p->pipe_bound = False;
2093 if(!smb_io_rpc_hdr_ba("", &hdr_ba, &out_hdr_ba, 0)) {
2094 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR_BA failed.\n"));
2100 * Check if this is an authenticated alter context request.
2103 if (p->hdr.auth_len != 0) {
2105 * Decode the authentication verifier.
2108 /* Work out any padding needed before the auth footer. */
2109 if ((RPC_HEADER_LEN + prs_offset(&out_hdr_ba)) % SERVER_NDR_PADDING_SIZE) {
2110 ss_padding_len = SERVER_NDR_PADDING_SIZE -
2111 ((RPC_HEADER_LEN + prs_offset(&out_hdr_ba)) % SERVER_NDR_PADDING_SIZE);
2112 DEBUG(10,("api_pipe_alter_context: auth pad_len = %u\n",
2113 (unsigned int)ss_padding_len ));
2116 /* Quick length check. Won't catch a bad auth footer,
2117 * prevents overrun. */
2119 if (p->hdr.frag_len < RPC_HEADER_LEN + RPC_HDR_AUTH_LEN + p->hdr.auth_len) {
2120 DEBUG(0,("api_pipe_alter_context: auth_len (%u) "
2121 "too long for fragment %u.\n",
2122 (unsigned int)p->hdr.auth_len,
2123 (unsigned int)p->hdr.frag_len ));
2127 /* Pull the auth header and the following data into a blob. */
2128 /* NB. The offset of the auth_header is relative to the *end*
2129 * of the packet, not the start. Also, the length of the
2130 * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
2131 * as the RPC header isn't included in rpc_in_p. */
2132 if(!prs_set_offset(rpc_in_p,
2133 p->hdr.frag_len - RPC_HEADER_LEN -
2134 RPC_HDR_AUTH_LEN - p->hdr.auth_len)) {
2135 DEBUG(0,("api_alter_context: cannot move "
2137 (unsigned int)(p->hdr.frag_len -
2138 RPC_HDR_AUTH_LEN - p->hdr.auth_len) ));
2142 if(!smb_io_rpc_hdr_auth("", &auth_info, rpc_in_p, 0)) {
2143 DEBUG(0,("api_pipe_alter_context: unable to unmarshall RPC_HDR_AUTH struct.\n"));
2148 * Currently only the SPNEGO auth type uses the alter ctx
2149 * response in place of the NTLMSSP auth3 type.
2152 if (auth_info.auth_type == DCERPC_AUTH_TYPE_SPNEGO) {
2153 /* We can only finish if the pipe is unbound. */
2154 if (!p->pipe_bound) {
2155 if (!pipe_spnego_auth_bind_continue(p, rpc_in_p,
2156 ss_padding_len, &auth_info, &out_auth)) {
2164 ZERO_STRUCT(auth_info);
2167 * Create the header, now we know the length.
2170 if (prs_offset(&out_auth)) {
2171 auth_len = prs_offset(&out_auth) - RPC_HDR_AUTH_LEN;
2174 init_rpc_hdr(&p->hdr, DCERPC_PKT_ALTER_RESP, DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST,
2176 RPC_HEADER_LEN + prs_offset(&out_hdr_ba) + prs_offset(&out_auth),
2180 * Marshall the header into the outgoing PDU.
2183 if(!smb_io_rpc_hdr("", &p->hdr, &p->out_data.frag, 0)) {
2184 DEBUG(0,("api_pipe_alter_context: marshalling of RPC_HDR failed.\n"));
2189 * Now add the RPC_HDR_BA and any auth needed.
2192 if(!prs_append_prs_data(&p->out_data.frag, &out_hdr_ba)) {
2193 DEBUG(0,("api_pipe_alter_context: append of RPC_HDR_BA failed.\n"));
2198 if (ss_padding_len) {
2199 char pad[SERVER_NDR_PADDING_SIZE];
2200 memset(pad, '\0', SERVER_NDR_PADDING_SIZE);
2201 if (!prs_copy_data_in(&p->out_data.frag, pad,
2203 DEBUG(0,("api_pipe_alter_context: failed to add %u "
2204 "bytes of pad data.\n",
2205 (unsigned int)ss_padding_len));
2210 if (!prs_append_prs_data( &p->out_data.frag, &out_auth)) {
2211 DEBUG(0,("api_pipe_alter_context: append of auth info failed.\n"));
2217 * Setup the lengths for the initial reply.
2220 p->out_data.data_sent_length = 0;
2221 p->out_data.current_pdu_sent = 0;
2223 prs_mem_free(&out_hdr_ba);
2224 prs_mem_free(&out_auth);
2230 prs_mem_free(&p->out_data.frag);
2231 prs_mem_free(&out_hdr_ba);
2232 prs_mem_free(&out_auth);
2233 return setup_bind_nak(p);
2236 /****************************************************************************
2237 Deal with NTLMSSP sign & seal processing on an RPC request.
2238 ****************************************************************************/
2240 bool api_pipe_ntlmssp_auth_process(pipes_struct *p, prs_struct *rpc_in,
2241 uint32 *p_ss_padding_len, NTSTATUS *pstatus)
2243 RPC_HDR_AUTH auth_info;
2244 uint32 auth_len = p->hdr.auth_len;
2245 uint32 save_offset = prs_offset(rpc_in);
2246 struct auth_ntlmssp_state *a = p->auth.a_u.auth_ntlmssp_state;
2247 unsigned char *data = NULL;
2249 unsigned char *full_packet_data = NULL;
2250 size_t full_packet_data_len;
2251 DATA_BLOB auth_blob;
2253 *pstatus = NT_STATUS_OK;
2255 if (p->auth.auth_level == DCERPC_AUTH_LEVEL_NONE || p->auth.auth_level == DCERPC_AUTH_LEVEL_CONNECT) {
2260 *pstatus = NT_STATUS_INVALID_PARAMETER;
2264 /* Ensure there's enough data for an authenticated request. */
2265 if (RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_HDR_AUTH_LEN
2266 + auth_len > p->hdr.frag_len) {
2267 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len %u is too large.\n",
2268 (unsigned int)auth_len ));
2269 *pstatus = NT_STATUS_INVALID_PARAMETER;
2274 * We need the full packet data + length (minus auth stuff) as well as the packet data + length
2275 * after the RPC header.
2276 * We need to pass in the full packet (minus auth len) to the NTLMSSP sign and check seal
2277 * functions as NTLMv2 checks the rpc headers also.
2278 * Both of these values include any auth_pad_len bytes.
2281 data = (unsigned char *)(prs_data_p(rpc_in) + RPC_HDR_REQ_LEN);
2282 data_len = (size_t)(p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN - RPC_HDR_AUTH_LEN - auth_len);
2284 full_packet_data = p->in_data.current_in_pdu;
2285 full_packet_data_len = p->hdr.frag_len - auth_len;
2287 /* Pull the auth header and the following data into a blob. */
2288 /* NB. The offset of the auth_header is relative to the *end*
2289 * of the packet, not the start. Also, the length of the
2290 * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
2291 * as the RPC header isn't included in rpc_in_p. */
2292 if(!prs_set_offset(rpc_in,
2293 p->hdr.frag_len - RPC_HEADER_LEN -
2294 RPC_HDR_AUTH_LEN - auth_len)) {
2295 DEBUG(0,("api_pipe_ntlmssp_auth_process: cannot move "
2297 (unsigned int)(p->hdr.frag_len -
2298 RPC_HDR_AUTH_LEN - auth_len) ));
2299 *pstatus = NT_STATUS_INVALID_PARAMETER;
2303 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
2304 DEBUG(0,("api_pipe_ntlmssp_auth_process: failed to "
2305 "unmarshall RPC_HDR_AUTH.\n"));
2306 *pstatus = NT_STATUS_INVALID_PARAMETER;
2310 /* Ensure auth_pad_len fits into the packet. */
2311 if (RPC_HEADER_LEN + RPC_HDR_REQ_LEN + auth_info.auth_pad_len +
2312 RPC_HDR_AUTH_LEN + auth_len > p->hdr.frag_len) {
2313 DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_info.auth_pad_len "
2314 "too large (%u), auth_len (%u), frag_len = (%u).\n",
2315 (unsigned int)auth_info.auth_pad_len,
2316 (unsigned int)auth_len,
2317 (unsigned int)p->hdr.frag_len ));
2318 *pstatus = NT_STATUS_INVALID_PARAMETER;
2322 auth_blob.data = (unsigned char *)prs_data_p(rpc_in) + prs_offset(rpc_in);
2323 auth_blob.length = auth_len;
2325 switch (p->auth.auth_level) {
2326 case DCERPC_AUTH_LEVEL_PRIVACY:
2327 /* Data is encrypted. */
2328 *pstatus = auth_ntlmssp_unseal_packet(a,
2331 full_packet_data_len,
2333 if (!NT_STATUS_IS_OK(*pstatus)) {
2337 case DCERPC_AUTH_LEVEL_INTEGRITY:
2338 /* Data is signed. */
2339 *pstatus = auth_ntlmssp_check_packet(a,
2342 full_packet_data_len,
2344 if (!NT_STATUS_IS_OK(*pstatus)) {
2349 *pstatus = NT_STATUS_INVALID_PARAMETER;
2354 * Return the current pointer to the data offset.
2357 if(!prs_set_offset(rpc_in, save_offset)) {
2358 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
2359 (unsigned int)save_offset ));
2360 *pstatus = NT_STATUS_INVALID_PARAMETER;
2365 * Remember the padding length. We must remove it from the real data
2366 * stream once the sign/seal is done.
2369 *p_ss_padding_len = auth_info.auth_pad_len;
2374 /****************************************************************************
2375 Deal with schannel processing on an RPC request.
2376 ****************************************************************************/
2378 bool api_pipe_schannel_process(pipes_struct *p, prs_struct *rpc_in, uint32 *p_ss_padding_len)
2382 uint32 save_offset = prs_offset(rpc_in);
2383 RPC_HDR_AUTH auth_info;
2388 auth_len = p->hdr.auth_len;
2390 if (auth_len < RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN ||
2391 auth_len > RPC_HEADER_LEN +
2395 DEBUG(0,("Incorrect auth_len %u.\n", (unsigned int)auth_len ));
2400 * The following is that length of the data we must verify or unseal.
2401 * This doesn't include the RPC headers or the auth_len or the RPC_HDR_AUTH_LEN
2402 * preceeding the auth_data, but does include the auth_pad_len bytes.
2405 if (p->hdr.frag_len < RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_HDR_AUTH_LEN + auth_len) {
2406 DEBUG(0,("Incorrect frag %u, auth %u.\n",
2407 (unsigned int)p->hdr.frag_len,
2408 (unsigned int)auth_len ));
2412 data_len = p->hdr.frag_len - RPC_HEADER_LEN - RPC_HDR_REQ_LEN -
2413 RPC_HDR_AUTH_LEN - auth_len;
2415 DEBUG(5,("data %d auth %d\n", data_len, auth_len));
2417 /* Pull the auth header and the following data into a blob. */
2418 /* NB. The offset of the auth_header is relative to the *end*
2419 * of the packet, not the start. Also, the length of the
2420 * data in rpc_in_p is p->hdr.frag_len - RPC_HEADER_LEN,
2421 * as the RPC header isn't included in rpc_in_p. */
2422 if(!prs_set_offset(rpc_in,
2423 p->hdr.frag_len - RPC_HEADER_LEN -
2424 RPC_HDR_AUTH_LEN - auth_len)) {
2425 DEBUG(0,("api_pipe_schannel_process: cannot move "
2427 (unsigned int)(p->hdr.frag_len -
2428 RPC_HDR_AUTH_LEN - auth_len) ));
2432 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, rpc_in, 0)) {
2433 DEBUG(0,("api_pipe_schannel_process: failed to "
2434 "unmarshall RPC_HDR_AUTH.\n"));
2438 /* Ensure auth_pad_len fits into the packet. */
2439 if (RPC_HEADER_LEN + RPC_HDR_REQ_LEN + auth_info.auth_pad_len +
2440 RPC_HDR_AUTH_LEN + auth_len > p->hdr.frag_len) {
2441 DEBUG(0,("api_pipe_schannel_process: auth_info.auth_pad_len "
2442 "too large (%u), auth_len (%u), frag_len = (%u).\n",
2443 (unsigned int)auth_info.auth_pad_len,
2444 (unsigned int)auth_len,
2445 (unsigned int)p->hdr.frag_len ));
2449 if (auth_info.auth_type != DCERPC_AUTH_TYPE_SCHANNEL) {
2450 DEBUG(0,("Invalid auth info %d on schannel\n",
2451 auth_info.auth_type));
2455 blob = data_blob_const(prs_data_p(rpc_in) + prs_offset(rpc_in), auth_len);
2457 if (DEBUGLEVEL >= 10) {
2458 dump_NL_AUTH_SIGNATURE(talloc_tos(), &blob);
2461 data = (uint8_t *)prs_data_p(rpc_in)+RPC_HDR_REQ_LEN;
2463 switch (auth_info.auth_level) {
2464 case DCERPC_AUTH_LEVEL_PRIVACY:
2465 status = netsec_incoming_packet(p->auth.a_u.schannel_auth,
2472 case DCERPC_AUTH_LEVEL_INTEGRITY:
2473 status = netsec_incoming_packet(p->auth.a_u.schannel_auth,
2481 status = NT_STATUS_INTERNAL_ERROR;
2485 if (!NT_STATUS_IS_OK(status)) {
2486 DEBUG(0,("failed to unseal packet: %s\n", nt_errstr(status)));
2491 * Return the current pointer to the data offset.
2494 if(!prs_set_offset(rpc_in, save_offset)) {
2495 DEBUG(0,("failed to set offset back to %u\n",
2496 (unsigned int)save_offset ));
2501 * Remember the padding length. We must remove it from the real data
2502 * stream once the sign/seal is done.
2505 *p_ss_padding_len = auth_info.auth_pad_len;
2510 /****************************************************************************
2511 Find the set of RPC functions associated with this context_id
2512 ****************************************************************************/
2514 static PIPE_RPC_FNS* find_pipe_fns_by_context( PIPE_RPC_FNS *list, uint32 context_id )
2516 PIPE_RPC_FNS *fns = NULL;
2519 DEBUG(0,("find_pipe_fns_by_context: ERROR! No context list for pipe!\n"));
2523 for (fns=list; fns; fns=fns->next ) {
2524 if ( fns->context_id == context_id )
2530 /****************************************************************************
2532 ****************************************************************************/
2534 void free_pipe_rpc_context( PIPE_RPC_FNS *list )
2536 PIPE_RPC_FNS *tmp = list;
2548 static bool api_rpcTNP(pipes_struct *p,
2549 const struct api_struct *api_rpc_cmds, int n_cmds);
2551 /****************************************************************************
2552 Find the correct RPC function to call for this request.
2553 If the pipe is authenticated then become the correct UNIX user
2554 before doing the call.
2555 ****************************************************************************/
2557 bool api_pipe_request(pipes_struct *p)
2560 bool changed_user = False;
2561 PIPE_RPC_FNS *pipe_fns;
2563 if (p->pipe_bound &&
2564 ((p->auth.auth_type == PIPE_AUTH_TYPE_NTLMSSP) ||
2565 (p->auth.auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP))) {
2566 if(!become_authenticated_pipe_user(p)) {
2567 prs_mem_free(&p->out_data.rdata);
2570 changed_user = True;
2573 DEBUG(5, ("Requested \\PIPE\\%s\n",
2574 get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
2576 /* get the set of RPC functions for this context */
2578 pipe_fns = find_pipe_fns_by_context(p->contexts, p->hdr_req.context_id);
2581 TALLOC_CTX *frame = talloc_stackframe();
2582 ret = api_rpcTNP(p, pipe_fns->cmds, pipe_fns->n_cmds);
2586 DEBUG(0,("api_pipe_request: No rpc function table associated with context [%d] on pipe [%s]\n",
2587 p->hdr_req.context_id,
2588 get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
2592 unbecome_authenticated_pipe_user();
2598 /*******************************************************************
2599 Calls the underlying RPC function for a named pipe.
2600 ********************************************************************/
2602 static bool api_rpcTNP(pipes_struct *p,
2603 const struct api_struct *api_rpc_cmds, int n_cmds)
2606 uint32 offset1, offset2;
2608 /* interpret the command */
2609 DEBUG(4,("api_rpcTNP: %s op 0x%x - ",
2610 get_pipe_name_from_syntax(talloc_tos(), &p->syntax),
2613 if (DEBUGLEVEL >= 50) {
2615 slprintf(name, sizeof(name)-1, "in_%s",
2616 get_pipe_name_from_syntax(talloc_tos(), &p->syntax));
2617 prs_dump(name, p->hdr_req.opnum, &p->in_data.data);
2620 for (fn_num = 0; fn_num < n_cmds; fn_num++) {
2621 if (api_rpc_cmds[fn_num].opnum == p->hdr_req.opnum && api_rpc_cmds[fn_num].fn != NULL) {
2622 DEBUG(3,("api_rpcTNP: rpc command: %s\n", api_rpc_cmds[fn_num].name));
2627 if (fn_num == n_cmds) {
2629 * For an unknown RPC just return a fault PDU but
2630 * return True to allow RPC's on the pipe to continue
2631 * and not put the pipe into fault state. JRA.
2633 DEBUG(4, ("unknown\n"));
2634 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
2638 offset1 = prs_offset(&p->out_data.rdata);
2640 DEBUG(6, ("api_rpc_cmds[%d].fn == %p\n",
2641 fn_num, api_rpc_cmds[fn_num].fn));
2642 /* do the actual command */
2643 if(!api_rpc_cmds[fn_num].fn(p)) {
2644 DEBUG(0,("api_rpcTNP: %s: %s failed.\n",
2645 get_pipe_name_from_syntax(talloc_tos(), &p->syntax),
2646 api_rpc_cmds[fn_num].name));
2647 prs_mem_free(&p->out_data.rdata);
2651 if (p->bad_handle_fault_state) {
2652 DEBUG(4,("api_rpcTNP: bad handle fault return.\n"));
2653 p->bad_handle_fault_state = False;
2654 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_CONTEXT_MISMATCH));
2658 if (p->rng_fault_state) {
2659 DEBUG(4, ("api_rpcTNP: rng fault return\n"));
2660 p->rng_fault_state = False;
2661 setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
2665 offset2 = prs_offset(&p->out_data.rdata);
2666 prs_set_offset(&p->out_data.rdata, offset1);
2667 if (DEBUGLEVEL >= 50) {
2669 slprintf(name, sizeof(name)-1, "out_%s",
2670 get_pipe_name_from_syntax(talloc_tos(), &p->syntax));
2671 prs_dump(name, p->hdr_req.opnum, &p->out_data.rdata);
2673 prs_set_offset(&p->out_data.rdata, offset2);
2675 DEBUG(5,("api_rpcTNP: called %s successfully\n",
2676 get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
2678 /* Check for buffer underflow in rpc parsing */
2680 if ((DEBUGLEVEL >= 10) &&
2681 (prs_offset(&p->in_data.data) != prs_data_size(&p->in_data.data))) {
2682 size_t data_len = prs_data_size(&p->in_data.data) - prs_offset(&p->in_data.data);
2683 char *data = (char *)SMB_MALLOC(data_len);
2685 DEBUG(10, ("api_rpcTNP: rpc input buffer underflow (parse error?)\n"));
2687 prs_uint8s(False, "", &p->in_data.data, 0, (unsigned char *)data, (uint32)data_len);