2 * Unix SMB/CIFS implementation.
3 * RPC Pipe client / server routines
4 * Largely rewritten by Jeremy Allison 2005.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
23 #define DBGC_CLASS DBGC_RPC_CLI
25 extern struct pipe_id_info pipe_names[];
27 /********************************************************************
28 Map internal value to wire value.
29 ********************************************************************/
31 static int map_pipe_auth_type_to_rpc_auth_type(enum pipe_auth_type auth_type)
35 case PIPE_AUTH_TYPE_NONE:
36 return RPC_ANONYMOUS_AUTH_TYPE;
38 case PIPE_AUTH_TYPE_NTLMSSP:
39 return RPC_NTLMSSP_AUTH_TYPE;
41 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
42 case PIPE_AUTH_TYPE_SPNEGO_KRB5:
43 return RPC_SPNEGO_AUTH_TYPE;
45 case PIPE_AUTH_TYPE_SCHANNEL:
46 return RPC_SCHANNEL_AUTH_TYPE;
48 case PIPE_AUTH_TYPE_KRB5:
49 return RPC_KRB5_AUTH_TYPE;
52 DEBUG(0,("map_pipe_auth_type_to_rpc_type: unknown pipe "
54 (unsigned int)auth_type ));
60 /********************************************************************
62 ********************************************************************/
64 static uint32 get_rpc_call_id(void)
66 static uint32 call_id = 0;
70 /*******************************************************************
71 Use SMBreadX to get rest of one fragment's worth of rpc data.
72 Will expand the current_pdu struct to the correct size.
73 ********************************************************************/
75 static NTSTATUS rpc_read(struct rpc_pipe_client *cli,
76 prs_struct *current_pdu,
78 uint32 *current_pdu_offset)
80 size_t size = (size_t)cli->max_recv_frag;
81 uint32 stream_offset = 0;
84 ssize_t extra_data_size = ((ssize_t)*current_pdu_offset) + ((ssize_t)data_to_read) - (ssize_t)prs_data_size(current_pdu);
86 DEBUG(5,("rpc_read: data_to_read: %u current_pdu offset: %u extra_data_size: %d\n",
87 (unsigned int)data_to_read, (unsigned int)*current_pdu_offset, (int)extra_data_size ));
90 * Grow the buffer if needed to accommodate the data to be read.
93 if (extra_data_size > 0) {
94 if(!prs_force_grow(current_pdu, (uint32)extra_data_size)) {
95 DEBUG(0,("rpc_read: Failed to grow parse struct by %d bytes.\n", (int)extra_data_size ));
96 return NT_STATUS_NO_MEMORY;
98 DEBUG(5,("rpc_read: grew buffer by %d bytes to %u\n", (int)extra_data_size, prs_data_size(current_pdu) ));
101 pdata = prs_data_p(current_pdu) + *current_pdu_offset;
104 /* read data using SMBreadX */
105 if (size > (size_t)data_to_read) {
106 size = (size_t)data_to_read;
109 num_read = cli_read(cli->cli, cli->fnum, pdata,
110 (off_t)stream_offset, size);
112 DEBUG(5,("rpc_read: num_read = %d, read offset: %u, to read: %u\n",
113 (int)num_read, (unsigned int)stream_offset, (unsigned int)data_to_read));
116 * A dos error of ERRDOS/ERRmoredata is not an error.
118 if (cli_is_dos_error(cli->cli)) {
121 cli_dos_error(cli->cli, &eclass, &ecode);
122 if (eclass != ERRDOS && ecode != ERRmoredata) {
123 DEBUG(0,("rpc_read: DOS Error %d/%u (%s) in cli_read on pipe %s\n",
124 eclass, (unsigned int)ecode,
125 cli_errstr(cli->cli),
127 return dos_to_ntstatus(eclass, ecode);
132 * Likewise for NT_STATUS_BUFFER_TOO_SMALL
134 if (cli_is_nt_error(cli->cli)) {
135 if (!NT_STATUS_EQUAL(cli_nt_error(cli->cli), NT_STATUS_BUFFER_TOO_SMALL)) {
136 DEBUG(0,("rpc_read: Error (%s) in cli_read on pipe %s\n",
137 nt_errstr(cli_nt_error(cli->cli)),
139 return cli_nt_error(cli->cli);
143 if (num_read == -1) {
144 DEBUG(0,("rpc_read: Error - cli_read on pipe %s returned -1\n",
146 return cli_get_nt_error(cli->cli);
149 data_to_read -= num_read;
150 stream_offset += num_read;
153 } while (num_read > 0 && data_to_read > 0);
154 /* && err == (0x80000000 | STATUS_BUFFER_OVERFLOW)); */
157 * Update the current offset into current_pdu by the amount read.
159 *current_pdu_offset += stream_offset;
163 /****************************************************************************
164 Try and get a PDU's worth of data from current_pdu. If not, then read more
166 ****************************************************************************/
168 static NTSTATUS cli_pipe_get_current_pdu(struct rpc_pipe_client *cli, RPC_HDR *prhdr, prs_struct *current_pdu)
170 NTSTATUS ret = NT_STATUS_OK;
171 uint32 current_pdu_len = prs_data_size(current_pdu);
173 /* Ensure we have at least RPC_HEADER_LEN worth of data to parse. */
174 if (current_pdu_len < RPC_HEADER_LEN) {
175 /* rpc_read expands the current_pdu struct as neccessary. */
176 ret = rpc_read(cli, current_pdu, RPC_HEADER_LEN - current_pdu_len, ¤t_pdu_len);
177 if (!NT_STATUS_IS_OK(ret)) {
182 /* This next call sets the endian bit correctly in current_pdu. */
183 /* We will propagate this to rbuf later. */
184 if(!smb_io_rpc_hdr("rpc_hdr ", prhdr, current_pdu, 0)) {
185 DEBUG(0,("cli_pipe_get_current_pdu: Failed to unmarshall RPC_HDR.\n"));
186 return NT_STATUS_BUFFER_TOO_SMALL;
189 /* Ensure we have frag_len bytes of data. */
190 if (current_pdu_len < prhdr->frag_len) {
191 /* rpc_read expands the current_pdu struct as neccessary. */
192 ret = rpc_read(cli, current_pdu, (uint32)prhdr->frag_len - current_pdu_len, ¤t_pdu_len);
193 if (!NT_STATUS_IS_OK(ret)) {
198 if (current_pdu_len < prhdr->frag_len) {
199 return NT_STATUS_BUFFER_TOO_SMALL;
205 /****************************************************************************
206 NTLMSSP specific sign/seal.
207 Virtually identical to rpc_server/srv_pipe.c:api_pipe_ntlmssp_auth_process.
208 In fact I should probably abstract these into identical pieces of code... JRA.
209 ****************************************************************************/
211 static NTSTATUS cli_pipe_verify_ntlmssp(struct rpc_pipe_client *cli, RPC_HDR *prhdr,
212 prs_struct *current_pdu,
213 uint8 *p_ss_padding_len)
215 RPC_HDR_AUTH auth_info;
216 uint32 save_offset = prs_offset(current_pdu);
217 uint32 auth_len = prhdr->auth_len;
218 NTLMSSP_STATE *ntlmssp_state = cli->auth.a_u.ntlmssp_state;
219 unsigned char *data = NULL;
221 unsigned char *full_packet_data = NULL;
222 size_t full_packet_data_len;
226 if (cli->auth.auth_level == PIPE_AUTH_LEVEL_NONE || cli->auth.auth_level == PIPE_AUTH_LEVEL_CONNECT) {
230 if (!ntlmssp_state) {
231 return NT_STATUS_INVALID_PARAMETER;
234 /* Ensure there's enough data for an authenticated response. */
235 if ((auth_len > RPC_MAX_SIGN_SIZE) ||
236 (RPC_HEADER_LEN + RPC_HDR_RESP_LEN + RPC_HDR_AUTH_LEN + auth_len > prhdr->frag_len)) {
237 DEBUG(0,("cli_pipe_verify_ntlmssp: auth_len %u is too large.\n",
238 (unsigned int)auth_len ));
239 return NT_STATUS_BUFFER_TOO_SMALL;
243 * We need the full packet data + length (minus auth stuff) as well as the packet data + length
244 * after the RPC header.
245 * We need to pass in the full packet (minus auth len) to the NTLMSSP sign and check seal
246 * functions as NTLMv2 checks the rpc headers also.
249 data = (unsigned char *)(prs_data_p(current_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN);
250 data_len = (size_t)(prhdr->frag_len - RPC_HEADER_LEN - RPC_HDR_RESP_LEN - RPC_HDR_AUTH_LEN - auth_len);
252 full_packet_data = (unsigned char *)prs_data_p(current_pdu);
253 full_packet_data_len = prhdr->frag_len - auth_len;
255 /* Pull the auth header and the following data into a blob. */
256 if(!prs_set_offset(current_pdu, RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len)) {
257 DEBUG(0,("cli_pipe_verify_ntlmssp: cannot move offset to %u.\n",
258 (unsigned int)RPC_HEADER_LEN + (unsigned int)RPC_HDR_RESP_LEN + (unsigned int)data_len ));
259 return NT_STATUS_BUFFER_TOO_SMALL;
262 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, current_pdu, 0)) {
263 DEBUG(0,("cli_pipe_verify_ntlmssp: failed to unmarshall RPC_HDR_AUTH.\n"));
264 return NT_STATUS_BUFFER_TOO_SMALL;
267 auth_blob.data = (unsigned char *)prs_data_p(current_pdu) + prs_offset(current_pdu);
268 auth_blob.length = auth_len;
270 switch (cli->auth.auth_level) {
271 case PIPE_AUTH_LEVEL_PRIVACY:
272 /* Data is encrypted. */
273 status = ntlmssp_unseal_packet(ntlmssp_state,
276 full_packet_data_len,
278 if (!NT_STATUS_IS_OK(status)) {
279 DEBUG(0,("cli_pipe_verify_ntlmssp: failed to unseal "
280 "packet from remote machine %s on pipe %s "
281 "fnum 0x%x. Error was %s.\n",
284 (unsigned int)cli->fnum,
285 nt_errstr(status) ));
289 case PIPE_AUTH_LEVEL_INTEGRITY:
290 /* Data is signed. */
291 status = ntlmssp_check_packet(ntlmssp_state,
294 full_packet_data_len,
296 if (!NT_STATUS_IS_OK(status)) {
297 DEBUG(0,("cli_pipe_verify_ntlmssp: check signing failed on "
298 "packet from remote machine %s on pipe %s "
299 "fnum 0x%x. Error was %s.\n",
302 (unsigned int)cli->fnum,
303 nt_errstr(status) ));
308 DEBUG(0,("cli_pipe_verify_ntlmssp: unknown internal auth level %d\n",
309 cli->auth.auth_level ));
310 return NT_STATUS_INVALID_INFO_CLASS;
314 * Return the current pointer to the data offset.
317 if(!prs_set_offset(current_pdu, save_offset)) {
318 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
319 (unsigned int)save_offset ));
320 return NT_STATUS_BUFFER_TOO_SMALL;
324 * Remember the padding length. We must remove it from the real data
325 * stream once the sign/seal is done.
328 *p_ss_padding_len = auth_info.auth_pad_len;
333 /****************************************************************************
334 schannel specific sign/seal.
335 ****************************************************************************/
337 static NTSTATUS cli_pipe_verify_schannel(struct rpc_pipe_client *cli, RPC_HDR *prhdr,
338 prs_struct *current_pdu,
339 uint8 *p_ss_padding_len)
341 RPC_HDR_AUTH auth_info;
342 RPC_AUTH_SCHANNEL_CHK schannel_chk;
343 uint32 auth_len = prhdr->auth_len;
344 uint32 save_offset = prs_offset(current_pdu);
345 struct schannel_auth_struct *schannel_auth = cli->auth.a_u.schannel_auth;
348 if (cli->auth.auth_level == PIPE_AUTH_LEVEL_NONE || cli->auth.auth_level == PIPE_AUTH_LEVEL_CONNECT) {
352 if (auth_len != RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN) {
353 DEBUG(0,("cli_pipe_verify_schannel: auth_len %u.\n", (unsigned int)auth_len ));
354 return NT_STATUS_INVALID_PARAMETER;
357 if (!schannel_auth) {
358 return NT_STATUS_INVALID_PARAMETER;
361 /* Ensure there's enough data for an authenticated response. */
362 if ((auth_len > RPC_MAX_SIGN_SIZE) ||
363 (RPC_HEADER_LEN + RPC_HDR_RESP_LEN + RPC_HDR_AUTH_LEN + auth_len > prhdr->frag_len)) {
364 DEBUG(0,("cli_pipe_verify_schannel: auth_len %u is too large.\n",
365 (unsigned int)auth_len ));
366 return NT_STATUS_INVALID_PARAMETER;
369 data_len = prhdr->frag_len - RPC_HEADER_LEN - RPC_HDR_RESP_LEN - RPC_HDR_AUTH_LEN - auth_len;
371 if(!prs_set_offset(current_pdu, RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len)) {
372 DEBUG(0,("cli_pipe_verify_schannel: cannot move offset to %u.\n",
373 (unsigned int)RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len ));
374 return NT_STATUS_BUFFER_TOO_SMALL;
377 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, current_pdu, 0)) {
378 DEBUG(0,("cli_pipe_verify_schannel: failed to unmarshall RPC_HDR_AUTH.\n"));
379 return NT_STATUS_BUFFER_TOO_SMALL;
382 if (auth_info.auth_type != RPC_SCHANNEL_AUTH_TYPE) {
383 DEBUG(0,("cli_pipe_verify_schannel: Invalid auth info %d on schannel\n",
384 auth_info.auth_type));
385 return NT_STATUS_BUFFER_TOO_SMALL;
388 if(!smb_io_rpc_auth_schannel_chk("", RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN,
389 &schannel_chk, current_pdu, 0)) {
390 DEBUG(0,("cli_pipe_verify_schannel: failed to unmarshal RPC_AUTH_SCHANNEL_CHK.\n"));
391 return NT_STATUS_BUFFER_TOO_SMALL;
394 if (!schannel_decode(schannel_auth,
395 cli->auth.auth_level,
398 prs_data_p(current_pdu)+RPC_HEADER_LEN+RPC_HDR_RESP_LEN,
400 DEBUG(3,("cli_pipe_verify_schannel: failed to decode PDU "
401 "Connection to remote machine %s "
402 "pipe %s fnum 0x%x.\n",
405 (unsigned int)cli->fnum ));
406 return NT_STATUS_INVALID_PARAMETER;
409 /* The sequence number gets incremented on both send and receive. */
410 schannel_auth->seq_num++;
413 * Return the current pointer to the data offset.
416 if(!prs_set_offset(current_pdu, save_offset)) {
417 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
418 (unsigned int)save_offset ));
419 return NT_STATUS_BUFFER_TOO_SMALL;
423 * Remember the padding length. We must remove it from the real data
424 * stream once the sign/seal is done.
427 *p_ss_padding_len = auth_info.auth_pad_len;
432 /****************************************************************************
433 Do the authentication checks on an incoming pdu. Check sign and unseal etc.
434 ****************************************************************************/
436 static NTSTATUS cli_pipe_validate_rpc_response(struct rpc_pipe_client *cli, RPC_HDR *prhdr,
437 prs_struct *current_pdu,
438 uint8 *p_ss_padding_len)
440 NTSTATUS ret = NT_STATUS_OK;
442 /* Paranioa checks for auth_len. */
443 if (prhdr->auth_len) {
444 if (prhdr->auth_len > prhdr->frag_len) {
445 return NT_STATUS_INVALID_PARAMETER;
448 if (prhdr->auth_len + RPC_HDR_AUTH_LEN < prhdr->auth_len ||
449 prhdr->auth_len + RPC_HDR_AUTH_LEN < RPC_HDR_AUTH_LEN) {
450 /* Integer wrap attempt. */
451 return NT_STATUS_INVALID_PARAMETER;
456 * Now we have a complete RPC request PDU fragment, try and verify any auth data.
459 switch(cli->auth.auth_type) {
460 case PIPE_AUTH_TYPE_NONE:
461 if (prhdr->auth_len) {
462 DEBUG(3, ("cli_pipe_validate_rpc_response: Connection to remote machine %s "
463 "pipe %s fnum 0x%x - got non-zero auth len %u.\n",
466 (unsigned int)cli->fnum,
467 (unsigned int)prhdr->auth_len ));
468 return NT_STATUS_INVALID_PARAMETER;
472 case PIPE_AUTH_TYPE_NTLMSSP:
473 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
474 ret = cli_pipe_verify_ntlmssp(cli, prhdr, current_pdu, p_ss_padding_len);
475 if (!NT_STATUS_IS_OK(ret)) {
480 case PIPE_AUTH_TYPE_SCHANNEL:
481 ret = cli_pipe_verify_schannel(cli, prhdr, current_pdu, p_ss_padding_len);
482 if (!NT_STATUS_IS_OK(ret)) {
487 case PIPE_AUTH_TYPE_KRB5:
488 case PIPE_AUTH_TYPE_SPNEGO_KRB5:
490 DEBUG(3, ("cli_pipe_validate_rpc_response: Connection to remote machine %s "
491 "pipe %s fnum %x - unknown internal auth type %u.\n",
494 (unsigned int)cli->fnum,
495 cli->auth.auth_type ));
496 return NT_STATUS_INVALID_INFO_CLASS;
502 /****************************************************************************
503 Do basic authentication checks on an incoming pdu.
504 ****************************************************************************/
506 static NTSTATUS cli_pipe_validate_current_pdu(struct rpc_pipe_client *cli, RPC_HDR *prhdr,
507 prs_struct *current_pdu,
508 uint8 expected_pkt_type,
511 prs_struct *return_data)
514 NTSTATUS ret = NT_STATUS_OK;
515 uint32 current_pdu_len = prs_data_size(current_pdu);
517 if (current_pdu_len != prhdr->frag_len) {
518 DEBUG(5,("cli_pipe_validate_current_pdu: incorrect pdu length %u, expected %u\n",
519 (unsigned int)current_pdu_len, (unsigned int)prhdr->frag_len ));
520 return NT_STATUS_INVALID_PARAMETER;
524 * Point the return values at the real data including the RPC
525 * header. Just in case the caller wants it.
527 *ppdata = prs_data_p(current_pdu);
528 *pdata_len = current_pdu_len;
530 /* Ensure we have the correct type. */
531 switch (prhdr->pkt_type) {
532 case RPC_ALTCONTRESP:
535 /* Alter context and bind ack share the same packet definitions. */
541 RPC_HDR_RESP rhdr_resp;
542 uint8 ss_padding_len = 0;
544 if(!smb_io_rpc_hdr_resp("rpc_hdr_resp", &rhdr_resp, current_pdu, 0)) {
545 DEBUG(5,("cli_pipe_validate_current_pdu: failed to unmarshal RPC_HDR_RESP.\n"));
546 return NT_STATUS_BUFFER_TOO_SMALL;
549 /* Here's where we deal with incoming sign/seal. */
550 ret = cli_pipe_validate_rpc_response(cli, prhdr,
551 current_pdu, &ss_padding_len);
552 if (!NT_STATUS_IS_OK(ret)) {
556 /* Point the return values at the NDR data. Remember to remove any ss padding. */
557 *ppdata = prs_data_p(current_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN;
559 if (current_pdu_len < RPC_HEADER_LEN + RPC_HDR_RESP_LEN + ss_padding_len) {
560 return NT_STATUS_BUFFER_TOO_SMALL;
563 *pdata_len = current_pdu_len - RPC_HEADER_LEN - RPC_HDR_RESP_LEN - ss_padding_len;
565 /* Remember to remove the auth footer. */
566 if (prhdr->auth_len) {
567 /* We've already done integer wrap tests on auth_len in
568 cli_pipe_validate_rpc_response(). */
569 if (*pdata_len < RPC_HDR_AUTH_LEN + prhdr->auth_len) {
570 return NT_STATUS_BUFFER_TOO_SMALL;
572 *pdata_len -= (RPC_HDR_AUTH_LEN + prhdr->auth_len);
575 DEBUG(10,("cli_pipe_validate_current_pdu: got pdu len %u, data_len %u, ss_len %u\n",
576 current_pdu_len, *pdata_len, ss_padding_len ));
579 * If this is the first reply, and the allocation hint is reasonably, try and
580 * set up the return_data parse_struct to the correct size.
583 if ((prs_data_size(return_data) == 0) && rhdr_resp.alloc_hint && (rhdr_resp.alloc_hint < 15*1024*1024)) {
584 if (!prs_set_buffer_size(return_data, rhdr_resp.alloc_hint)) {
585 DEBUG(0,("cli_pipe_validate_current_pdu: reply alloc hint %u "
586 "too large to allocate\n",
587 (unsigned int)rhdr_resp.alloc_hint ));
588 return NT_STATUS_NO_MEMORY;
596 DEBUG(1, ("cli_pipe_validate_current_pdu: Bind NACK received from remote machine %s "
597 "pipe %s fnum 0x%x!\n",
600 (unsigned int)cli->fnum));
601 /* Use this for now... */
602 return NT_STATUS_NETWORK_ACCESS_DENIED;
606 RPC_HDR_RESP rhdr_resp;
607 RPC_HDR_FAULT fault_resp;
609 if(!smb_io_rpc_hdr_resp("rpc_hdr_resp", &rhdr_resp, current_pdu, 0)) {
610 DEBUG(5,("cli_pipe_validate_current_pdu: failed to unmarshal RPC_HDR_RESP.\n"));
611 return NT_STATUS_BUFFER_TOO_SMALL;
614 if(!smb_io_rpc_hdr_fault("fault", &fault_resp, current_pdu, 0)) {
615 DEBUG(5,("cli_pipe_validate_current_pdu: failed to unmarshal RPC_HDR_FAULT.\n"));
616 return NT_STATUS_BUFFER_TOO_SMALL;
619 DEBUG(1, ("cli_pipe_validate_current_pdu: RPC fault code %s received from remote machine %s "
620 "pipe %s fnum 0x%x!\n",
621 dcerpc_errstr(NT_STATUS_V(fault_resp.status)),
624 (unsigned int)cli->fnum));
625 if (NT_STATUS_IS_OK(fault_resp.status)) {
626 return NT_STATUS_UNSUCCESSFUL;
628 return fault_resp.status;
634 DEBUG(0, ("cli_pipe_validate_current_pdu: unknown packet type %u received "
635 "from remote machine %s pipe %s fnum 0x%x!\n",
636 (unsigned int)prhdr->pkt_type,
639 (unsigned int)cli->fnum));
640 return NT_STATUS_INVALID_INFO_CLASS;
643 if (prhdr->pkt_type != expected_pkt_type) {
644 DEBUG(3, ("cli_pipe_validate_current_pdu: Connection to remote machine %s "
645 "pipe %s fnum %x got an unexpected RPC packet "
646 "type - %u, not %u\n",
649 (unsigned int)cli->fnum,
652 return NT_STATUS_INVALID_INFO_CLASS;
655 /* Do this just before return - we don't want to modify any rpc header
656 data before now as we may have needed to do cryptographic actions on
659 if ((prhdr->pkt_type == RPC_BINDACK) && !(prhdr->flags & RPC_FLG_LAST)) {
660 DEBUG(5,("cli_pipe_validate_current_pdu: bug in server (AS/U?), "
661 "setting fragment first/last ON.\n"));
662 prhdr->flags |= RPC_FLG_FIRST|RPC_FLG_LAST;
668 /****************************************************************************
669 Ensure we eat the just processed pdu from the current_pdu prs_struct.
670 Normally the frag_len and buffer size will match, but on the first trans
671 reply there is a theoretical chance that buffer size > frag_len, so we must
673 ****************************************************************************/
675 static NTSTATUS cli_pipe_reset_current_pdu(struct rpc_pipe_client *cli, RPC_HDR *prhdr, prs_struct *current_pdu)
677 uint32 current_pdu_len = prs_data_size(current_pdu);
679 if (current_pdu_len < prhdr->frag_len) {
680 return NT_STATUS_BUFFER_TOO_SMALL;
684 if (current_pdu_len == (uint32)prhdr->frag_len) {
685 prs_mem_free(current_pdu);
686 prs_init_empty(current_pdu, prs_get_mem_context(current_pdu), UNMARSHALL);
687 /* Make current_pdu dynamic with no memory. */
688 prs_give_memory(current_pdu, 0, 0, True);
693 * Oh no ! More data in buffer than we processed in current pdu.
694 * Cheat. Move the data down and shrink the buffer.
697 memcpy(prs_data_p(current_pdu), prs_data_p(current_pdu) + prhdr->frag_len,
698 current_pdu_len - prhdr->frag_len);
700 /* Remember to set the read offset back to zero. */
701 prs_set_offset(current_pdu, 0);
703 /* Shrink the buffer. */
704 if (!prs_set_buffer_size(current_pdu, current_pdu_len - prhdr->frag_len)) {
705 return NT_STATUS_BUFFER_TOO_SMALL;
711 /****************************************************************************
712 Send data on an rpc pipe via trans. The prs_struct data must be the last
713 pdu fragment of an NDR data stream.
715 Receive response data from an rpc pipe, which may be large...
717 Read the first fragment: unfortunately have to use SMBtrans for the first
718 bit, then SMBreadX for subsequent bits.
720 If first fragment received also wasn't the last fragment, continue
721 getting fragments until we _do_ receive the last fragment.
723 Request/Response PDU's look like the following...
725 |<------------------PDU len----------------------------------------------->|
726 |<-HDR_LEN-->|<--REQ LEN------>|.............|<-AUTH_HDRLEN->|<-AUTH_LEN-->|
728 +------------+-----------------+-------------+---------------+-------------+
729 | RPC HEADER | REQ/RESP HEADER | DATA ...... | AUTH_HDR | AUTH DATA |
730 +------------+-----------------+-------------+---------------+-------------+
732 Where the presence of the AUTH_HDR and AUTH DATA are dependent on the
733 signing & sealing being negotiated.
735 ****************************************************************************/
737 static NTSTATUS rpc_api_pipe(struct rpc_pipe_client *cli,
738 prs_struct *data, /* Outgoing pdu fragment, already formatted for send. */
739 prs_struct *rbuf, /* Incoming reply - return as an NDR stream. */
740 uint8 expected_pkt_type)
742 NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
744 uint32 rparam_len = 0;
746 char *pdata = prs_data_p(data);
747 uint32 data_len = prs_offset(data);
749 uint32 rdata_len = 0;
750 uint32 max_data = cli->max_xmit_frag ? cli->max_xmit_frag : RPC_MAX_PDU_FRAG_LEN;
751 uint32 current_rbuf_offset = 0;
752 prs_struct current_pdu;
755 /* Ensure we're not sending too much. */
756 SMB_ASSERT(data_len <= max_data);
759 /* Set up the current pdu parse struct. */
760 prs_init_empty(¤t_pdu, prs_get_mem_context(rbuf), UNMARSHALL);
762 /* Create setup parameters - must be in native byte order. */
763 setup[0] = TRANSACT_DCERPCCMD;
764 setup[1] = cli->fnum; /* Pipe file handle. */
766 DEBUG(5,("rpc_api_pipe: Remote machine %s pipe %s fnum 0x%x\n",
769 (unsigned int)cli->fnum ));
772 * Send the last (or only) fragment of an RPC request. For small
773 * amounts of data (about 1024 bytes or so) the RPC request and response
774 * appears in a SMBtrans request and response.
777 if (!cli_api_pipe(cli->cli, "\\PIPE\\",
778 setup, 2, 0, /* Setup, length, max */
779 NULL, 0, 0, /* Params, length, max */
780 pdata, data_len, max_data, /* data, length, max */
781 &rparam, &rparam_len, /* return params, len */
782 &prdata, &rdata_len)) /* return data, len */
784 DEBUG(0, ("rpc_api_pipe: Remote machine %s pipe %s fnum 0x%x "
785 "returned critical error. Error was %s\n",
788 (unsigned int)cli->fnum,
789 cli_errstr(cli->cli)));
790 ret = cli_get_nt_error(cli->cli);
796 /* Throw away returned params - we know we won't use them. */
800 if (prdata == NULL) {
801 DEBUG(3,("rpc_api_pipe: Remote machine %s pipe %s "
802 "fnum 0x%x failed to return data.\n",
805 (unsigned int)cli->fnum));
806 /* Yes - some calls can truely return no data... */
807 prs_mem_free(¤t_pdu);
812 * Give this memory as dynamic to the current pdu.
815 prs_give_memory(¤t_pdu, prdata, rdata_len, True);
817 /* Ensure we can mess with the return prs_struct. */
818 SMB_ASSERT(UNMARSHALLING(rbuf));
819 SMB_ASSERT(prs_data_size(rbuf) == 0);
821 /* Make rbuf dynamic with no memory. */
822 prs_give_memory(rbuf, 0, 0, True);
829 /* Ensure we have enough data for a pdu. */
830 ret = cli_pipe_get_current_pdu(cli, &rhdr, ¤t_pdu);
831 if (!NT_STATUS_IS_OK(ret)) {
835 /* We pass in rbuf here so if the alloc hint is set correctly
836 we can set the output size and avoid reallocs. */
838 ret = cli_pipe_validate_current_pdu(cli, &rhdr, ¤t_pdu, expected_pkt_type,
839 &ret_data, &ret_data_len, rbuf);
841 DEBUG(10,("rpc_api_pipe: got PDU len of %u at offset %u\n",
842 prs_data_size(¤t_pdu), current_rbuf_offset ));
844 if (!NT_STATUS_IS_OK(ret)) {
848 if ((rhdr.flags & RPC_FLG_FIRST)) {
849 if (rhdr.pack_type[0] == 0) {
850 /* Set the data type correctly for big-endian data on the first packet. */
851 DEBUG(10,("rpc_api_pipe: On machine %s pipe %s fnum 0x%x "
852 "PDU data format is big-endian.\n",
855 (unsigned int)cli->fnum));
857 prs_set_endian_data(rbuf, RPC_BIG_ENDIAN);
859 /* Check endianness on subsequent packets. */
860 if (current_pdu.bigendian_data != rbuf->bigendian_data) {
861 DEBUG(0,("rpc_api_pipe: Error : Endianness changed from %s to %s\n",
862 rbuf->bigendian_data ? "big" : "little",
863 current_pdu.bigendian_data ? "big" : "little" ));
864 ret = NT_STATUS_INVALID_PARAMETER;
870 /* Now copy the data portion out of the pdu into rbuf. */
871 if (!prs_force_grow(rbuf, ret_data_len)) {
872 ret = NT_STATUS_NO_MEMORY;
875 memcpy(prs_data_p(rbuf)+current_rbuf_offset, ret_data, (size_t)ret_data_len);
876 current_rbuf_offset += ret_data_len;
878 /* See if we've finished with all the data in current_pdu yet ? */
879 ret = cli_pipe_reset_current_pdu(cli, &rhdr, ¤t_pdu);
880 if (!NT_STATUS_IS_OK(ret)) {
884 if (rhdr.flags & RPC_FLG_LAST) {
885 break; /* We're done. */
889 DEBUG(10,("rpc_api_pipe: Remote machine %s pipe %s fnum 0x%x returned %u bytes.\n",
892 (unsigned int)cli->fnum,
893 (unsigned int)prs_data_size(rbuf) ));
895 prs_mem_free(¤t_pdu);
900 prs_mem_free(¤t_pdu);
905 /*******************************************************************
906 Creates krb5 auth bind.
907 ********************************************************************/
909 static NTSTATUS create_krb5_auth_bind_req( struct rpc_pipe_client *cli,
910 enum pipe_auth_level auth_level,
911 RPC_HDR_AUTH *pauth_out,
912 prs_struct *auth_data)
916 struct kerberos_auth_struct *a = cli->auth.a_u.kerberos_auth;
917 DATA_BLOB tkt = data_blob_null;
918 DATA_BLOB tkt_wrapped = data_blob_null;
920 /* We may change the pad length before marshalling. */
921 init_rpc_hdr_auth(pauth_out, RPC_KRB5_AUTH_TYPE, (int)auth_level, 0, 1);
923 DEBUG(5, ("create_krb5_auth_bind_req: creating a service ticket for principal %s\n",
924 a->service_principal ));
926 /* Create the ticket for the service principal and return it in a gss-api wrapped blob. */
928 ret = cli_krb5_get_ticket(a->service_principal, 0, &tkt,
929 &a->session_key, (uint32)AP_OPTS_MUTUAL_REQUIRED, NULL, NULL);
932 DEBUG(1,("create_krb5_auth_bind_req: cli_krb5_get_ticket for principal %s "
934 a->service_principal,
935 error_message(ret) ));
937 data_blob_free(&tkt);
938 prs_mem_free(auth_data);
939 return NT_STATUS_INVALID_PARAMETER;
942 /* wrap that up in a nice GSS-API wrapping */
943 tkt_wrapped = spnego_gen_krb5_wrap(tkt, TOK_ID_KRB_AP_REQ);
945 data_blob_free(&tkt);
947 /* Auth len in the rpc header doesn't include auth_header. */
948 if (!prs_copy_data_in(auth_data, (char *)tkt_wrapped.data, tkt_wrapped.length)) {
949 data_blob_free(&tkt_wrapped);
950 prs_mem_free(auth_data);
951 return NT_STATUS_NO_MEMORY;
954 DEBUG(5, ("create_krb5_auth_bind_req: Created krb5 GSS blob :\n"));
955 dump_data(5, tkt_wrapped.data, tkt_wrapped.length);
957 data_blob_free(&tkt_wrapped);
960 return NT_STATUS_INVALID_PARAMETER;
964 /*******************************************************************
965 Creates SPNEGO NTLMSSP auth bind.
966 ********************************************************************/
968 static NTSTATUS create_spnego_ntlmssp_auth_rpc_bind_req( struct rpc_pipe_client *cli,
969 enum pipe_auth_level auth_level,
970 RPC_HDR_AUTH *pauth_out,
971 prs_struct *auth_data)
974 DATA_BLOB null_blob = data_blob_null;
975 DATA_BLOB request = data_blob_null;
976 DATA_BLOB spnego_msg = data_blob_null;
978 /* We may change the pad length before marshalling. */
979 init_rpc_hdr_auth(pauth_out, RPC_SPNEGO_AUTH_TYPE, (int)auth_level, 0, 1);
981 DEBUG(5, ("create_spnego_ntlmssp_auth_rpc_bind_req: Processing NTLMSSP Negotiate\n"));
982 nt_status = ntlmssp_update(cli->auth.a_u.ntlmssp_state,
986 if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
987 data_blob_free(&request);
988 prs_mem_free(auth_data);
992 /* Wrap this in SPNEGO. */
993 spnego_msg = gen_negTokenInit(OID_NTLMSSP, request);
995 data_blob_free(&request);
997 /* Auth len in the rpc header doesn't include auth_header. */
998 if (!prs_copy_data_in(auth_data, (char *)spnego_msg.data, spnego_msg.length)) {
999 data_blob_free(&spnego_msg);
1000 prs_mem_free(auth_data);
1001 return NT_STATUS_NO_MEMORY;
1004 DEBUG(5, ("create_spnego_ntlmssp_auth_rpc_bind_req: NTLMSSP Negotiate:\n"));
1005 dump_data(5, spnego_msg.data, spnego_msg.length);
1007 data_blob_free(&spnego_msg);
1008 return NT_STATUS_OK;
1011 /*******************************************************************
1012 Creates NTLMSSP auth bind.
1013 ********************************************************************/
1015 static NTSTATUS create_ntlmssp_auth_rpc_bind_req( struct rpc_pipe_client *cli,
1016 enum pipe_auth_level auth_level,
1017 RPC_HDR_AUTH *pauth_out,
1018 prs_struct *auth_data)
1021 DATA_BLOB null_blob = data_blob_null;
1022 DATA_BLOB request = data_blob_null;
1024 /* We may change the pad length before marshalling. */
1025 init_rpc_hdr_auth(pauth_out, RPC_NTLMSSP_AUTH_TYPE, (int)auth_level, 0, 1);
1027 DEBUG(5, ("create_ntlmssp_auth_rpc_bind_req: Processing NTLMSSP Negotiate\n"));
1028 nt_status = ntlmssp_update(cli->auth.a_u.ntlmssp_state,
1032 if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1033 data_blob_free(&request);
1034 prs_mem_free(auth_data);
1038 /* Auth len in the rpc header doesn't include auth_header. */
1039 if (!prs_copy_data_in(auth_data, (char *)request.data, request.length)) {
1040 data_blob_free(&request);
1041 prs_mem_free(auth_data);
1042 return NT_STATUS_NO_MEMORY;
1045 DEBUG(5, ("create_ntlmssp_auth_rpc_bind_req: NTLMSSP Negotiate:\n"));
1046 dump_data(5, request.data, request.length);
1048 data_blob_free(&request);
1049 return NT_STATUS_OK;
1052 /*******************************************************************
1053 Creates schannel auth bind.
1054 ********************************************************************/
1056 static NTSTATUS create_schannel_auth_rpc_bind_req( struct rpc_pipe_client *cli,
1057 enum pipe_auth_level auth_level,
1058 RPC_HDR_AUTH *pauth_out,
1059 prs_struct *auth_data)
1061 RPC_AUTH_SCHANNEL_NEG schannel_neg;
1063 /* We may change the pad length before marshalling. */
1064 init_rpc_hdr_auth(pauth_out, RPC_SCHANNEL_AUTH_TYPE, (int)auth_level, 0, 1);
1066 /* Use lp_workgroup() if domain not specified */
1068 if (!cli->domain || !cli->domain[0]) {
1069 cli->domain = lp_workgroup();
1072 init_rpc_auth_schannel_neg(&schannel_neg, cli->domain, global_myname());
1075 * Now marshall the data into the auth parse_struct.
1078 if(!smb_io_rpc_auth_schannel_neg("schannel_neg",
1079 &schannel_neg, auth_data, 0)) {
1080 DEBUG(0,("Failed to marshall RPC_AUTH_SCHANNEL_NEG.\n"));
1081 prs_mem_free(auth_data);
1082 return NT_STATUS_NO_MEMORY;
1085 return NT_STATUS_OK;
1088 /*******************************************************************
1089 Creates the internals of a DCE/RPC bind request or alter context PDU.
1090 ********************************************************************/
1092 static NTSTATUS create_bind_or_alt_ctx_internal(enum RPC_PKT_TYPE pkt_type,
1093 prs_struct *rpc_out,
1095 RPC_IFACE *abstract,
1096 RPC_IFACE *transfer,
1097 RPC_HDR_AUTH *phdr_auth,
1098 prs_struct *pauth_info)
1102 RPC_CONTEXT rpc_ctx;
1103 uint16 auth_len = prs_offset(pauth_info);
1104 uint8 ss_padding_len = 0;
1105 uint16 frag_len = 0;
1107 /* create the RPC context. */
1108 init_rpc_context(&rpc_ctx, 0 /* context id */, abstract, transfer);
1110 /* create the bind request RPC_HDR_RB */
1111 init_rpc_hdr_rb(&hdr_rb, RPC_MAX_PDU_FRAG_LEN, RPC_MAX_PDU_FRAG_LEN, 0x0, &rpc_ctx);
1113 /* Start building the frag length. */
1114 frag_len = RPC_HEADER_LEN + RPC_HDR_RB_LEN(&hdr_rb);
1116 /* Do we need to pad ? */
1118 uint16 data_len = RPC_HEADER_LEN + RPC_HDR_RB_LEN(&hdr_rb);
1120 ss_padding_len = 8 - (data_len % 8);
1121 phdr_auth->auth_pad_len = ss_padding_len;
1123 frag_len += RPC_HDR_AUTH_LEN + auth_len + ss_padding_len;
1126 /* Create the request RPC_HDR */
1127 init_rpc_hdr(&hdr, pkt_type, RPC_FLG_FIRST|RPC_FLG_LAST, rpc_call_id, frag_len, auth_len);
1129 /* Marshall the RPC header */
1130 if(!smb_io_rpc_hdr("hdr" , &hdr, rpc_out, 0)) {
1131 DEBUG(0,("create_bind_or_alt_ctx_internal: failed to marshall RPC_HDR.\n"));
1132 return NT_STATUS_NO_MEMORY;
1135 /* Marshall the bind request data */
1136 if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_out, 0)) {
1137 DEBUG(0,("create_bind_or_alt_ctx_internal: failed to marshall RPC_HDR_RB.\n"));
1138 return NT_STATUS_NO_MEMORY;
1142 * Grow the outgoing buffer to store any auth info.
1146 if (ss_padding_len) {
1148 memset(pad, '\0', 8);
1149 if (!prs_copy_data_in(rpc_out, pad, ss_padding_len)) {
1150 DEBUG(0,("create_bind_or_alt_ctx_internal: failed to marshall padding.\n"));
1151 return NT_STATUS_NO_MEMORY;
1155 if(!smb_io_rpc_hdr_auth("hdr_auth", phdr_auth, rpc_out, 0)) {
1156 DEBUG(0,("create_bind_or_alt_ctx_internal: failed to marshall RPC_HDR_AUTH.\n"));
1157 return NT_STATUS_NO_MEMORY;
1161 if(!prs_append_prs_data( rpc_out, pauth_info)) {
1162 DEBUG(0,("create_bind_or_alt_ctx_internal: failed to grow parse struct to add auth.\n"));
1163 return NT_STATUS_NO_MEMORY;
1167 return NT_STATUS_OK;
1170 /*******************************************************************
1171 Creates a DCE/RPC bind request.
1172 ********************************************************************/
1174 static NTSTATUS create_rpc_bind_req(struct rpc_pipe_client *cli,
1175 prs_struct *rpc_out,
1177 RPC_IFACE *abstract, RPC_IFACE *transfer,
1178 enum pipe_auth_type auth_type,
1179 enum pipe_auth_level auth_level)
1181 RPC_HDR_AUTH hdr_auth;
1182 prs_struct auth_info;
1183 NTSTATUS ret = NT_STATUS_OK;
1185 ZERO_STRUCT(hdr_auth);
1186 if (!prs_init(&auth_info, RPC_HDR_AUTH_LEN, prs_get_mem_context(rpc_out), MARSHALL))
1187 return NT_STATUS_NO_MEMORY;
1189 switch (auth_type) {
1190 case PIPE_AUTH_TYPE_SCHANNEL:
1191 ret = create_schannel_auth_rpc_bind_req(cli, auth_level, &hdr_auth, &auth_info);
1192 if (!NT_STATUS_IS_OK(ret)) {
1193 prs_mem_free(&auth_info);
1198 case PIPE_AUTH_TYPE_NTLMSSP:
1199 ret = create_ntlmssp_auth_rpc_bind_req(cli, auth_level, &hdr_auth, &auth_info);
1200 if (!NT_STATUS_IS_OK(ret)) {
1201 prs_mem_free(&auth_info);
1206 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
1207 ret = create_spnego_ntlmssp_auth_rpc_bind_req(cli, auth_level, &hdr_auth, &auth_info);
1208 if (!NT_STATUS_IS_OK(ret)) {
1209 prs_mem_free(&auth_info);
1214 case PIPE_AUTH_TYPE_KRB5:
1215 ret = create_krb5_auth_bind_req(cli, auth_level, &hdr_auth, &auth_info);
1216 if (!NT_STATUS_IS_OK(ret)) {
1217 prs_mem_free(&auth_info);
1222 case PIPE_AUTH_TYPE_NONE:
1226 /* "Can't" happen. */
1227 return NT_STATUS_INVALID_INFO_CLASS;
1230 ret = create_bind_or_alt_ctx_internal(RPC_BIND,
1238 prs_mem_free(&auth_info);
1242 /*******************************************************************
1243 Create and add the NTLMSSP sign/seal auth header and data.
1244 ********************************************************************/
1246 static NTSTATUS add_ntlmssp_auth_footer(struct rpc_pipe_client *cli,
1248 uint32 ss_padding_len,
1249 prs_struct *outgoing_pdu)
1251 RPC_HDR_AUTH auth_info;
1253 DATA_BLOB auth_blob = data_blob_null;
1254 uint16 data_and_pad_len = prs_offset(outgoing_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN;
1256 if (!cli->auth.a_u.ntlmssp_state) {
1257 return NT_STATUS_INVALID_PARAMETER;
1260 /* Init and marshall the auth header. */
1261 init_rpc_hdr_auth(&auth_info,
1262 map_pipe_auth_type_to_rpc_auth_type(cli->auth.auth_type),
1263 cli->auth.auth_level,
1265 1 /* context id. */);
1267 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, outgoing_pdu, 0)) {
1268 DEBUG(0,("add_ntlmssp_auth_footer: failed to marshall RPC_HDR_AUTH.\n"));
1269 data_blob_free(&auth_blob);
1270 return NT_STATUS_NO_MEMORY;
1273 switch (cli->auth.auth_level) {
1274 case PIPE_AUTH_LEVEL_PRIVACY:
1275 /* Data portion is encrypted. */
1276 status = ntlmssp_seal_packet(cli->auth.a_u.ntlmssp_state,
1277 (unsigned char *)prs_data_p(outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
1279 (unsigned char *)prs_data_p(outgoing_pdu),
1280 (size_t)prs_offset(outgoing_pdu),
1282 if (!NT_STATUS_IS_OK(status)) {
1283 data_blob_free(&auth_blob);
1288 case PIPE_AUTH_LEVEL_INTEGRITY:
1289 /* Data is signed. */
1290 status = ntlmssp_sign_packet(cli->auth.a_u.ntlmssp_state,
1291 (unsigned char *)prs_data_p(outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
1293 (unsigned char *)prs_data_p(outgoing_pdu),
1294 (size_t)prs_offset(outgoing_pdu),
1296 if (!NT_STATUS_IS_OK(status)) {
1297 data_blob_free(&auth_blob);
1304 smb_panic("bad auth level");
1306 return NT_STATUS_INVALID_PARAMETER;
1309 /* Finally marshall the blob. */
1311 if (!prs_copy_data_in(outgoing_pdu, (const char *)auth_blob.data, NTLMSSP_SIG_SIZE)) {
1312 DEBUG(0,("add_ntlmssp_auth_footer: failed to add %u bytes auth blob.\n",
1313 (unsigned int)NTLMSSP_SIG_SIZE));
1314 data_blob_free(&auth_blob);
1315 return NT_STATUS_NO_MEMORY;
1318 data_blob_free(&auth_blob);
1319 return NT_STATUS_OK;
1322 /*******************************************************************
1323 Create and add the schannel sign/seal auth header and data.
1324 ********************************************************************/
1326 static NTSTATUS add_schannel_auth_footer(struct rpc_pipe_client *cli,
1328 uint32 ss_padding_len,
1329 prs_struct *outgoing_pdu)
1331 RPC_HDR_AUTH auth_info;
1332 RPC_AUTH_SCHANNEL_CHK verf;
1333 struct schannel_auth_struct *sas = cli->auth.a_u.schannel_auth;
1334 char *data_p = prs_data_p(outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN;
1335 size_t data_and_pad_len = prs_offset(outgoing_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN;
1338 return NT_STATUS_INVALID_PARAMETER;
1341 /* Init and marshall the auth header. */
1342 init_rpc_hdr_auth(&auth_info,
1343 map_pipe_auth_type_to_rpc_auth_type(cli->auth.auth_type),
1344 cli->auth.auth_level,
1346 1 /* context id. */);
1348 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, outgoing_pdu, 0)) {
1349 DEBUG(0,("add_schannel_auth_footer: failed to marshall RPC_HDR_AUTH.\n"));
1350 return NT_STATUS_NO_MEMORY;
1353 switch (cli->auth.auth_level) {
1354 case PIPE_AUTH_LEVEL_PRIVACY:
1355 case PIPE_AUTH_LEVEL_INTEGRITY:
1356 DEBUG(10,("add_schannel_auth_footer: SCHANNEL seq_num=%d\n",
1359 schannel_encode(sas,
1360 cli->auth.auth_level,
1361 SENDER_IS_INITIATOR,
1371 smb_panic("bad auth level");
1373 return NT_STATUS_INVALID_PARAMETER;
1376 /* Finally marshall the blob. */
1377 smb_io_rpc_auth_schannel_chk("",
1378 RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN,
1383 return NT_STATUS_OK;
1386 /*******************************************************************
1387 Calculate how much data we're going to send in this packet, also
1388 work out any sign/seal padding length.
1389 ********************************************************************/
1391 static uint32 calculate_data_len_tosend(struct rpc_pipe_client *cli,
1395 uint32 *p_ss_padding)
1397 uint32 data_space, data_len;
1399 switch (cli->auth.auth_level) {
1400 case PIPE_AUTH_LEVEL_NONE:
1401 case PIPE_AUTH_LEVEL_CONNECT:
1402 data_space = cli->max_xmit_frag - RPC_HEADER_LEN - RPC_HDR_REQ_LEN;
1403 data_len = MIN(data_space, data_left);
1406 *p_frag_len = RPC_HEADER_LEN + RPC_HDR_REQ_LEN + data_len;
1409 case PIPE_AUTH_LEVEL_INTEGRITY:
1410 case PIPE_AUTH_LEVEL_PRIVACY:
1411 /* Treat the same for all authenticated rpc requests. */
1412 switch(cli->auth.auth_type) {
1413 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
1414 case PIPE_AUTH_TYPE_NTLMSSP:
1415 *p_auth_len = NTLMSSP_SIG_SIZE;
1417 case PIPE_AUTH_TYPE_SCHANNEL:
1418 *p_auth_len = RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
1421 smb_panic("bad auth type");
1425 data_space = cli->max_xmit_frag - RPC_HEADER_LEN - RPC_HDR_REQ_LEN -
1426 RPC_HDR_AUTH_LEN - *p_auth_len;
1428 data_len = MIN(data_space, data_left);
1430 *p_ss_padding = 8 - (data_len % 8);
1432 *p_frag_len = RPC_HEADER_LEN + RPC_HDR_REQ_LEN + /* Normal headers. */
1433 data_len + *p_ss_padding + /* data plus padding. */
1434 RPC_HDR_AUTH_LEN + *p_auth_len; /* Auth header and auth data. */
1438 smb_panic("bad auth level");
1444 /*******************************************************************
1446 Does an rpc request on a pipe. Incoming data is NDR encoded in in_data.
1447 Reply is NDR encoded in out_data. Splits the data stream into RPC PDU's
1448 and deals with signing/sealing details.
1449 ********************************************************************/
1451 NTSTATUS rpc_api_pipe_req(struct rpc_pipe_client *cli,
1453 prs_struct *in_data,
1454 prs_struct *out_data)
1457 uint32 data_left = prs_offset(in_data);
1458 uint32 alloc_hint = prs_offset(in_data);
1459 uint32 data_sent_thistime = 0;
1460 uint32 current_data_offset = 0;
1461 uint32 call_id = get_rpc_call_id();
1463 prs_struct outgoing_pdu;
1465 memset(pad, '\0', 8);
1467 if (cli->max_xmit_frag < RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_MAX_SIGN_SIZE) {
1468 /* Server is screwed up ! */
1469 return NT_STATUS_INVALID_PARAMETER;
1472 if (!prs_init(&outgoing_pdu, cli->max_xmit_frag, prs_get_mem_context(in_data), MARSHALL))
1473 return NT_STATUS_NO_MEMORY;
1477 RPC_HDR_REQ hdr_req;
1478 uint16 auth_len = 0;
1479 uint16 frag_len = 0;
1481 uint32 ss_padding = 0;
1483 data_sent_thistime = calculate_data_len_tosend(cli, data_left,
1484 &frag_len, &auth_len, &ss_padding);
1486 if (current_data_offset == 0) {
1487 flags = RPC_FLG_FIRST;
1490 if (data_sent_thistime == data_left) {
1491 flags |= RPC_FLG_LAST;
1494 /* Create and marshall the header and request header. */
1495 init_rpc_hdr(&hdr, RPC_REQUEST, flags, call_id, frag_len, auth_len);
1497 if(!smb_io_rpc_hdr("hdr ", &hdr, &outgoing_pdu, 0)) {
1498 prs_mem_free(&outgoing_pdu);
1499 return NT_STATUS_NO_MEMORY;
1502 /* Create the rpc request RPC_HDR_REQ */
1503 init_rpc_hdr_req(&hdr_req, alloc_hint, op_num);
1505 if(!smb_io_rpc_hdr_req("hdr_req", &hdr_req, &outgoing_pdu, 0)) {
1506 prs_mem_free(&outgoing_pdu);
1507 return NT_STATUS_NO_MEMORY;
1510 /* Copy in the data, plus any ss padding. */
1511 if (!prs_append_some_prs_data(&outgoing_pdu, in_data, current_data_offset, data_sent_thistime)) {
1512 prs_mem_free(&outgoing_pdu);
1513 return NT_STATUS_NO_MEMORY;
1516 /* Copy the sign/seal padding data. */
1518 if (!prs_copy_data_in(&outgoing_pdu, pad, ss_padding)) {
1519 prs_mem_free(&outgoing_pdu);
1520 return NT_STATUS_NO_MEMORY;
1524 /* Generate any auth sign/seal and add the auth footer. */
1526 switch (cli->auth.auth_type) {
1527 case PIPE_AUTH_TYPE_NONE:
1529 case PIPE_AUTH_TYPE_NTLMSSP:
1530 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
1531 ret = add_ntlmssp_auth_footer(cli, &hdr, ss_padding, &outgoing_pdu);
1532 if (!NT_STATUS_IS_OK(ret)) {
1533 prs_mem_free(&outgoing_pdu);
1537 case PIPE_AUTH_TYPE_SCHANNEL:
1538 ret = add_schannel_auth_footer(cli, &hdr, ss_padding, &outgoing_pdu);
1539 if (!NT_STATUS_IS_OK(ret)) {
1540 prs_mem_free(&outgoing_pdu);
1545 smb_panic("bad auth type");
1546 break; /* notreached */
1550 /* Actually send the packet. */
1551 if (flags & RPC_FLG_LAST) {
1552 /* Last packet - send the data, get the reply and return. */
1553 ret = rpc_api_pipe(cli, &outgoing_pdu, out_data, RPC_RESPONSE);
1554 prs_mem_free(&outgoing_pdu);
1556 if (DEBUGLEVEL >= 50) {
1557 char *dump_name = NULL;
1558 /* Also capture received data */
1559 if (asprintf(&dump_name, "%s/reply_%s_%d",
1560 get_dyn_LOGFILEBASE(), cli->pipe_name,
1562 prs_dump(dump_name, op_num, out_data);
1563 SAFE_FREE(dump_name);
1569 /* More packets to come - write and continue. */
1570 ssize_t num_written = cli_write(cli->cli, cli->fnum, 8, /* 8 means message mode. */
1571 prs_data_p(&outgoing_pdu),
1573 (size_t)hdr.frag_len);
1575 if (num_written != hdr.frag_len) {
1576 prs_mem_free(&outgoing_pdu);
1577 return cli_get_nt_error(cli->cli);
1581 current_data_offset += data_sent_thistime;
1582 data_left -= data_sent_thistime;
1584 /* Reset the marshalling position back to zero. */
1585 if (!prs_set_offset(&outgoing_pdu, 0)) {
1586 prs_mem_free(&outgoing_pdu);
1587 return NT_STATUS_NO_MEMORY;
1592 /****************************************************************************
1593 Set the handle state.
1594 ****************************************************************************/
1596 static bool rpc_pipe_set_hnd_state(struct rpc_pipe_client *cli,
1597 const char *pipe_name, uint16 device_state)
1599 bool state_set = False;
1601 uint16 setup[2]; /* only need 2 uint16 setup parameters */
1602 char *rparam = NULL;
1604 uint32 rparam_len, rdata_len;
1606 if (pipe_name == NULL)
1609 DEBUG(5,("Set Handle state Pipe[%x]: %s - device state:%x\n",
1610 cli->fnum, pipe_name, device_state));
1612 /* create parameters: device state */
1613 SSVAL(param, 0, device_state);
1615 /* create setup parameters. */
1617 setup[1] = cli->fnum; /* pipe file handle. got this from an SMBOpenX. */
1619 /* send the data on \PIPE\ */
1620 if (cli_api_pipe(cli->cli, "\\PIPE\\",
1621 setup, 2, 0, /* setup, length, max */
1622 param, 2, 0, /* param, length, max */
1623 NULL, 0, 1024, /* data, length, max */
1624 &rparam, &rparam_len, /* return param, length */
1625 &rdata, &rdata_len)) /* return data, length */
1627 DEBUG(5, ("Set Handle state: return OK\n"));
1638 /****************************************************************************
1639 Check the rpc bind acknowledge response.
1640 ****************************************************************************/
1642 static bool valid_pipe_name(const int pipe_idx, RPC_IFACE *abstract, RPC_IFACE *transfer)
1644 if ( pipe_idx >= PI_MAX_PIPES ) {
1645 DEBUG(0,("valid_pipe_name: Programmer error! Invalid pipe index [%d]\n",
1650 DEBUG(5,("Bind Abstract Syntax: "));
1651 dump_data(5, (uint8 *)&pipe_names[pipe_idx].abstr_syntax,
1652 sizeof(pipe_names[pipe_idx].abstr_syntax));
1653 DEBUG(5,("Bind Transfer Syntax: "));
1654 dump_data(5, (uint8 *)&pipe_names[pipe_idx].trans_syntax,
1655 sizeof(pipe_names[pipe_idx].trans_syntax));
1657 /* copy the required syntaxes out so we can do the right bind */
1659 *transfer = *pipe_names[pipe_idx].trans_syntax;
1660 *abstract = *pipe_names[pipe_idx].abstr_syntax;
1665 /****************************************************************************
1666 Check the rpc bind acknowledge response.
1667 ****************************************************************************/
1669 static bool check_bind_response(RPC_HDR_BA *hdr_ba, const int pipe_idx, RPC_IFACE *transfer)
1671 if ( hdr_ba->addr.len == 0) {
1672 DEBUG(4,("Ignoring length check -- ASU bug (server didn't fill in the pipe name correctly)"));
1675 # if 0 /* JERRY -- apparently ASU forgets to fill in the server pipe name sometimes */
1676 if ( !strequal(hdr_ba->addr.str, pipe_names[pipe_idx].client_pipe) &&
1677 !strequal(hdr_ba->addr.str, pipe_names[pipe_idx].server_pipe) )
1679 DEBUG(4,("bind_rpc_pipe: pipe_name %s != expected pipe %s. oh well!\n",
1680 pipe_names[i].server_pipe ,hdr_ba->addr.str));
1684 DEBUG(5,("bind_rpc_pipe: server pipe_name found: %s\n", pipe_names[i].server_pipe ));
1686 if (pipe_names[pipe_idx].server_pipe == NULL) {
1687 DEBUG(2,("bind_rpc_pipe: pipe name %s unsupported\n", hdr_ba->addr.str));
1692 /* check the transfer syntax */
1693 if ((hdr_ba->transfer.if_version != transfer->if_version) ||
1694 (memcmp(&hdr_ba->transfer.uuid, &transfer->uuid, sizeof(transfer->uuid)) !=0)) {
1695 DEBUG(2,("bind_rpc_pipe: transfer syntax differs\n"));
1699 if (hdr_ba->res.num_results != 0x1 || hdr_ba->res.result != 0) {
1700 DEBUG(2,("bind_rpc_pipe: bind denied results: %d reason: %x\n",
1701 hdr_ba->res.num_results, hdr_ba->res.reason));
1704 DEBUG(5,("check_bind_response: accepted!\n"));
1708 /*******************************************************************
1709 Creates a DCE/RPC bind authentication response.
1710 This is the packet that is sent back to the server once we
1711 have received a BIND-ACK, to finish the third leg of
1712 the authentication handshake.
1713 ********************************************************************/
1715 static NTSTATUS create_rpc_bind_auth3(struct rpc_pipe_client *cli,
1717 enum pipe_auth_type auth_type,
1718 enum pipe_auth_level auth_level,
1719 DATA_BLOB *pauth_blob,
1720 prs_struct *rpc_out)
1723 RPC_HDR_AUTH hdr_auth;
1726 /* Create the request RPC_HDR */
1727 init_rpc_hdr(&hdr, RPC_AUTH3, RPC_FLG_FIRST|RPC_FLG_LAST, rpc_call_id,
1728 RPC_HEADER_LEN + 4 /* pad */ + RPC_HDR_AUTH_LEN + pauth_blob->length,
1729 pauth_blob->length );
1732 if(!smb_io_rpc_hdr("hdr", &hdr, rpc_out, 0)) {
1733 DEBUG(0,("create_rpc_bind_auth3: failed to marshall RPC_HDR.\n"));
1734 return NT_STATUS_NO_MEMORY;
1738 I'm puzzled about this - seems to violate the DCE RPC auth rules,
1739 about padding - shouldn't this pad to length 8 ? JRA.
1742 /* 4 bytes padding. */
1743 if (!prs_uint32("pad", rpc_out, 0, &pad)) {
1744 DEBUG(0,("create_rpc_bind_auth3: failed to marshall 4 byte pad.\n"));
1745 return NT_STATUS_NO_MEMORY;
1748 /* Create the request RPC_HDR_AUTHA */
1749 init_rpc_hdr_auth(&hdr_auth,
1750 map_pipe_auth_type_to_rpc_auth_type(auth_type),
1753 if(!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, rpc_out, 0)) {
1754 DEBUG(0,("create_rpc_bind_auth3: failed to marshall RPC_HDR_AUTHA.\n"));
1755 return NT_STATUS_NO_MEMORY;
1759 * Append the auth data to the outgoing buffer.
1762 if(!prs_copy_data_in(rpc_out, (char *)pauth_blob->data, pauth_blob->length)) {
1763 DEBUG(0,("create_rpc_bind_auth3: failed to marshall auth blob.\n"));
1764 return NT_STATUS_NO_MEMORY;
1767 return NT_STATUS_OK;
1770 /****************************************************************************
1771 Create and send the third packet in an RPC auth.
1772 ****************************************************************************/
1774 static NTSTATUS rpc_finish_auth3_bind(struct rpc_pipe_client *cli,
1778 enum pipe_auth_type auth_type,
1779 enum pipe_auth_level auth_level)
1781 DATA_BLOB server_response = data_blob_null;
1782 DATA_BLOB client_reply = data_blob_null;
1783 RPC_HDR_AUTH hdr_auth;
1788 if (!phdr->auth_len || (phdr->frag_len < phdr->auth_len + RPC_HDR_AUTH_LEN)) {
1789 return NT_STATUS_INVALID_PARAMETER;
1792 /* Process the returned NTLMSSP blob first. */
1793 if (!prs_set_offset(rbuf, phdr->frag_len - phdr->auth_len - RPC_HDR_AUTH_LEN)) {
1794 return NT_STATUS_INVALID_PARAMETER;
1797 if(!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, rbuf, 0)) {
1798 return NT_STATUS_INVALID_PARAMETER;
1801 /* TODO - check auth_type/auth_level match. */
1803 server_response = data_blob(NULL, phdr->auth_len);
1804 prs_copy_data_out((char *)server_response.data, rbuf, phdr->auth_len);
1806 nt_status = ntlmssp_update(cli->auth.a_u.ntlmssp_state,
1810 if (!NT_STATUS_IS_OK(nt_status)) {
1811 DEBUG(0,("rpc_finish_auth3_bind: NTLMSSP update using server blob failed.\n"));
1812 data_blob_free(&server_response);
1816 prs_init_empty(&rpc_out, prs_get_mem_context(rbuf), MARSHALL);
1818 nt_status = create_rpc_bind_auth3(cli, rpc_call_id,
1819 auth_type, auth_level,
1820 &client_reply, &rpc_out);
1822 if (!NT_STATUS_IS_OK(nt_status)) {
1823 prs_mem_free(&rpc_out);
1824 data_blob_free(&client_reply);
1825 data_blob_free(&server_response);
1829 /* 8 here is named pipe message mode. */
1830 ret = cli_write(cli->cli, cli->fnum, 0x8, prs_data_p(&rpc_out), 0,
1831 (size_t)prs_offset(&rpc_out));
1833 if (ret != (ssize_t)prs_offset(&rpc_out)) {
1834 DEBUG(0,("rpc_send_auth_auth3: cli_write failed. Return was %d\n", (int)ret));
1835 prs_mem_free(&rpc_out);
1836 data_blob_free(&client_reply);
1837 data_blob_free(&server_response);
1838 return cli_get_nt_error(cli->cli);
1841 DEBUG(5,("rpc_send_auth_auth3: Remote machine %s pipe %s "
1842 "fnum 0x%x sent auth3 response ok.\n",
1845 (unsigned int)cli->fnum));
1847 prs_mem_free(&rpc_out);
1848 data_blob_free(&client_reply);
1849 data_blob_free(&server_response);
1850 return NT_STATUS_OK;
1853 /*******************************************************************
1854 Creates a DCE/RPC bind alter context authentication request which
1855 may contain a spnego auth blobl
1856 ********************************************************************/
1858 static NTSTATUS create_rpc_alter_context(uint32 rpc_call_id,
1859 RPC_IFACE *abstract,
1860 RPC_IFACE *transfer,
1861 enum pipe_auth_level auth_level,
1862 const DATA_BLOB *pauth_blob, /* spnego auth blob already created. */
1863 prs_struct *rpc_out)
1865 RPC_HDR_AUTH hdr_auth;
1866 prs_struct auth_info;
1867 NTSTATUS ret = NT_STATUS_OK;
1869 ZERO_STRUCT(hdr_auth);
1870 if (!prs_init(&auth_info, RPC_HDR_AUTH_LEN, prs_get_mem_context(rpc_out), MARSHALL))
1871 return NT_STATUS_NO_MEMORY;
1873 /* We may change the pad length before marshalling. */
1874 init_rpc_hdr_auth(&hdr_auth, RPC_SPNEGO_AUTH_TYPE, (int)auth_level, 0, 1);
1876 if (pauth_blob->length) {
1877 if (!prs_copy_data_in(&auth_info, (const char *)pauth_blob->data, pauth_blob->length)) {
1878 prs_mem_free(&auth_info);
1879 return NT_STATUS_NO_MEMORY;
1883 ret = create_bind_or_alt_ctx_internal(RPC_ALTCONT,
1890 prs_mem_free(&auth_info);
1894 /*******************************************************************
1895 Third leg of the SPNEGO bind mechanism - sends alter context PDU
1896 and gets a response.
1897 ********************************************************************/
1899 static NTSTATUS rpc_finish_spnego_ntlmssp_bind(struct rpc_pipe_client *cli,
1903 RPC_IFACE *abstract,
1904 RPC_IFACE *transfer,
1905 enum pipe_auth_type auth_type,
1906 enum pipe_auth_level auth_level)
1908 DATA_BLOB server_spnego_response = data_blob_null;
1909 DATA_BLOB server_ntlm_response = data_blob_null;
1910 DATA_BLOB client_reply = data_blob_null;
1911 DATA_BLOB tmp_blob = data_blob_null;
1912 RPC_HDR_AUTH hdr_auth;
1916 if (!phdr->auth_len || (phdr->frag_len < phdr->auth_len + RPC_HDR_AUTH_LEN)) {
1917 return NT_STATUS_INVALID_PARAMETER;
1920 /* Process the returned NTLMSSP blob first. */
1921 if (!prs_set_offset(rbuf, phdr->frag_len - phdr->auth_len - RPC_HDR_AUTH_LEN)) {
1922 return NT_STATUS_INVALID_PARAMETER;
1925 if(!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, rbuf, 0)) {
1926 return NT_STATUS_INVALID_PARAMETER;
1929 server_spnego_response = data_blob(NULL, phdr->auth_len);
1930 prs_copy_data_out((char *)server_spnego_response.data, rbuf, phdr->auth_len);
1932 /* The server might give us back two challenges - tmp_blob is for the second. */
1933 if (!spnego_parse_challenge(server_spnego_response, &server_ntlm_response, &tmp_blob)) {
1934 data_blob_free(&server_spnego_response);
1935 data_blob_free(&server_ntlm_response);
1936 data_blob_free(&tmp_blob);
1937 return NT_STATUS_INVALID_PARAMETER;
1940 /* We're finished with the server spnego response and the tmp_blob. */
1941 data_blob_free(&server_spnego_response);
1942 data_blob_free(&tmp_blob);
1944 nt_status = ntlmssp_update(cli->auth.a_u.ntlmssp_state,
1945 server_ntlm_response,
1948 /* Finished with the server_ntlm response */
1949 data_blob_free(&server_ntlm_response);
1951 if (!NT_STATUS_IS_OK(nt_status)) {
1952 DEBUG(0,("rpc_finish_spnego_ntlmssp_bind: NTLMSSP update using server blob failed.\n"));
1953 data_blob_free(&client_reply);
1957 /* SPNEGO wrap the client reply. */
1958 tmp_blob = spnego_gen_auth(client_reply);
1959 data_blob_free(&client_reply);
1960 client_reply = tmp_blob;
1961 tmp_blob = data_blob_null; /* Ensure it's safe to free this just in case. */
1963 /* Now prepare the alter context pdu. */
1964 prs_init_empty(&rpc_out, prs_get_mem_context(rbuf), MARSHALL);
1966 nt_status = create_rpc_alter_context(rpc_call_id,
1973 data_blob_free(&client_reply);
1975 if (!NT_STATUS_IS_OK(nt_status)) {
1976 prs_mem_free(&rpc_out);
1980 /* Initialize the returning data struct. */
1982 prs_init_empty(rbuf, talloc_tos(), UNMARSHALL);
1984 nt_status = rpc_api_pipe(cli, &rpc_out, rbuf, RPC_ALTCONTRESP);
1985 if (!NT_STATUS_IS_OK(nt_status)) {
1986 prs_mem_free(&rpc_out);
1990 prs_mem_free(&rpc_out);
1992 /* Get the auth blob from the reply. */
1993 if(!smb_io_rpc_hdr("rpc_hdr ", phdr, rbuf, 0)) {
1994 DEBUG(0,("rpc_finish_spnego_ntlmssp_bind: Failed to unmarshall RPC_HDR.\n"));
1995 return NT_STATUS_BUFFER_TOO_SMALL;
1998 if (!prs_set_offset(rbuf, phdr->frag_len - phdr->auth_len - RPC_HDR_AUTH_LEN)) {
1999 return NT_STATUS_INVALID_PARAMETER;
2002 if(!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, rbuf, 0)) {
2003 return NT_STATUS_INVALID_PARAMETER;
2006 server_spnego_response = data_blob(NULL, phdr->auth_len);
2007 prs_copy_data_out((char *)server_spnego_response.data, rbuf, phdr->auth_len);
2009 /* Check we got a valid auth response. */
2010 if (!spnego_parse_auth_response(server_spnego_response, NT_STATUS_OK, OID_NTLMSSP, &tmp_blob)) {
2011 data_blob_free(&server_spnego_response);
2012 data_blob_free(&tmp_blob);
2013 return NT_STATUS_INVALID_PARAMETER;
2016 data_blob_free(&server_spnego_response);
2017 data_blob_free(&tmp_blob);
2019 DEBUG(5,("rpc_finish_spnego_ntlmssp_bind: alter context request to "
2020 "remote machine %s pipe %s fnum 0x%x.\n",
2023 (unsigned int)cli->fnum));
2025 return NT_STATUS_OK;
2028 /****************************************************************************
2030 ****************************************************************************/
2032 static NTSTATUS rpc_pipe_bind(struct rpc_pipe_client *cli,
2033 enum pipe_auth_type auth_type,
2034 enum pipe_auth_level auth_level)
2045 DEBUG(5,("Bind RPC Pipe[%x]: %s auth_type %u, auth_level %u\n",
2046 (unsigned int)cli->fnum,
2048 (unsigned int)auth_type,
2049 (unsigned int)auth_level ));
2051 if (!valid_pipe_name(cli->pipe_idx, &abstract, &transfer)) {
2052 return NT_STATUS_INVALID_PARAMETER;
2055 prs_init_empty(&rpc_out, talloc_tos(), MARSHALL);
2057 rpc_call_id = get_rpc_call_id();
2059 /* Marshall the outgoing data. */
2060 status = create_rpc_bind_req(cli, &rpc_out, rpc_call_id,
2061 &abstract, &transfer,
2065 if (!NT_STATUS_IS_OK(status)) {
2066 prs_mem_free(&rpc_out);
2070 /* Initialize the incoming data struct. */
2071 prs_init_empty(&rbuf, talloc_tos(), UNMARSHALL);
2073 /* send data on \PIPE\. receive a response */
2074 status = rpc_api_pipe(cli, &rpc_out, &rbuf, RPC_BINDACK);
2075 if (!NT_STATUS_IS_OK(status)) {
2076 prs_mem_free(&rpc_out);
2080 prs_mem_free(&rpc_out);
2082 DEBUG(3,("rpc_pipe_bind: Remote machine %s pipe %s "
2083 "fnum 0x%x bind request returned ok.\n",
2086 (unsigned int)cli->fnum));
2088 /* Unmarshall the RPC header */
2089 if(!smb_io_rpc_hdr("hdr" , &hdr, &rbuf, 0)) {
2090 DEBUG(0,("rpc_pipe_bind: failed to unmarshall RPC_HDR.\n"));
2091 prs_mem_free(&rbuf);
2092 return NT_STATUS_BUFFER_TOO_SMALL;
2095 if(!smb_io_rpc_hdr_ba("", &hdr_ba, &rbuf, 0)) {
2096 DEBUG(0,("rpc_pipe_bind: Failed to unmarshall RPC_HDR_BA.\n"));
2097 prs_mem_free(&rbuf);
2098 return NT_STATUS_BUFFER_TOO_SMALL;
2101 if(!check_bind_response(&hdr_ba, cli->pipe_idx, &transfer)) {
2102 DEBUG(2,("rpc_pipe_bind: check_bind_response failed.\n"));
2103 prs_mem_free(&rbuf);
2104 return NT_STATUS_BUFFER_TOO_SMALL;
2107 cli->max_xmit_frag = hdr_ba.bba.max_tsize;
2108 cli->max_recv_frag = hdr_ba.bba.max_rsize;
2110 /* For authenticated binds we may need to do 3 or 4 leg binds. */
2113 case PIPE_AUTH_TYPE_NONE:
2114 case PIPE_AUTH_TYPE_SCHANNEL:
2115 /* Bind complete. */
2118 case PIPE_AUTH_TYPE_NTLMSSP:
2119 /* Need to send AUTH3 packet - no reply. */
2120 status = rpc_finish_auth3_bind(cli, &hdr, &rbuf, rpc_call_id,
2121 auth_type, auth_level);
2122 if (!NT_STATUS_IS_OK(status)) {
2123 prs_mem_free(&rbuf);
2128 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
2129 /* Need to send alter context request and reply. */
2130 status = rpc_finish_spnego_ntlmssp_bind(cli, &hdr, &rbuf, rpc_call_id,
2131 &abstract, &transfer,
2132 auth_type, auth_level);
2133 if (!NT_STATUS_IS_OK(status)) {
2134 prs_mem_free(&rbuf);
2139 case PIPE_AUTH_TYPE_KRB5:
2143 DEBUG(0,("cli_finish_bind_auth: unknown auth type %u\n",
2144 (unsigned int)auth_type ));
2145 prs_mem_free(&rbuf);
2146 return NT_STATUS_INVALID_INFO_CLASS;
2149 /* For NTLMSSP ensure the server gave us the auth_level we wanted. */
2150 if (auth_type == PIPE_AUTH_TYPE_NTLMSSP || auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP) {
2151 if (auth_level == PIPE_AUTH_LEVEL_INTEGRITY) {
2152 if (!(cli->auth.a_u.ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN)) {
2153 DEBUG(0,("cli_finish_bind_auth: requested NTLMSSSP signing and server refused.\n"));
2154 prs_mem_free(&rbuf);
2155 return NT_STATUS_INVALID_PARAMETER;
2158 if (auth_level == PIPE_AUTH_LEVEL_INTEGRITY) {
2159 if (!(cli->auth.a_u.ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL)) {
2160 DEBUG(0,("cli_finish_bind_auth: requested NTLMSSSP sealing and server refused.\n"));
2161 prs_mem_free(&rbuf);
2162 return NT_STATUS_INVALID_PARAMETER;
2167 /* Pipe is bound - set up auth_type and auth_level data. */
2169 cli->auth.auth_type = auth_type;
2170 cli->auth.auth_level = auth_level;
2172 prs_mem_free(&rbuf);
2173 return NT_STATUS_OK;
2176 /****************************************************************************
2177 Open a named pipe over SMB to a remote server.
2179 * CAVEAT CALLER OF THIS FUNCTION:
2180 * The returned rpc_pipe_client saves a copy of the cli_state cli pointer,
2181 * so be sure that this function is called AFTER any structure (vs pointer)
2182 * assignment of the cli. In particular, libsmbclient does structure
2183 * assignments of cli, which invalidates the data in the returned
2184 * rpc_pipe_client if this function is called before the structure assignment
2187 ****************************************************************************/
2189 static struct rpc_pipe_client *cli_rpc_pipe_open(struct cli_state *cli, int pipe_idx, NTSTATUS *perr)
2191 struct rpc_pipe_client *result;
2194 *perr = NT_STATUS_NO_MEMORY;
2196 /* sanity check to protect against crashes */
2199 *perr = NT_STATUS_INVALID_HANDLE;
2203 /* The pipe name index must fall within our array */
2204 SMB_ASSERT((pipe_idx >= 0) && (pipe_idx < PI_MAX_PIPES));
2206 result = TALLOC_ZERO_P(NULL, struct rpc_pipe_client);
2207 if (result == NULL) {
2211 result->pipe_name = cli_get_pipe_name(pipe_idx);
2213 fnum = cli_nt_create(cli, result->pipe_name, DESIRED_ACCESS_PIPE);
2216 DEBUG(1,("cli_rpc_pipe_open: cli_nt_create failed on pipe %s "
2217 "to machine %s. Error was %s\n",
2218 result->pipe_name, cli->desthost,
2220 *perr = cli_get_nt_error(cli);
2221 talloc_destroy(result);
2225 result->fnum = fnum;
2227 result->pipe_idx = pipe_idx;
2228 result->auth.auth_type = PIPE_AUTH_TYPE_NONE;
2229 result->auth.auth_level = PIPE_AUTH_LEVEL_NONE;
2231 result->desthost = talloc_strdup(result, cli->desthost);
2232 if (result->desthost == NULL) {
2233 TALLOC_FREE(result);
2237 if (pipe_idx == PI_NETLOGON) {
2238 /* Set up a netlogon credential chain for a netlogon pipe. */
2239 result->dc = TALLOC_ZERO_P(result, struct dcinfo);
2240 if (result->dc == NULL) {
2241 talloc_destroy(result);
2246 DLIST_ADD(cli->pipe_list, result);
2247 *perr = NT_STATUS_OK;
2252 /****************************************************************************
2253 Open a named pipe to an SMB server and bind anonymously.
2254 ****************************************************************************/
2256 struct rpc_pipe_client *cli_rpc_pipe_open_noauth(struct cli_state *cli, int pipe_idx, NTSTATUS *perr)
2258 struct rpc_pipe_client *result;
2260 result = cli_rpc_pipe_open(cli, pipe_idx, perr);
2261 if (result == NULL) {
2265 *perr = rpc_pipe_bind(result, PIPE_AUTH_TYPE_NONE, PIPE_AUTH_LEVEL_NONE);
2266 if (!NT_STATUS_IS_OK(*perr)) {
2268 if (pipe_idx == PI_DSSETUP) {
2269 /* non AD domains just don't have this pipe, avoid
2270 * level 0 statement in that case - gd */
2273 DEBUG(lvl, ("cli_rpc_pipe_open_noauth: rpc_pipe_bind for pipe %s failed with error %s\n",
2274 cli_get_pipe_name(pipe_idx), nt_errstr(*perr) ));
2275 cli_rpc_pipe_close(result);
2279 DEBUG(10,("cli_rpc_pipe_open_noauth: opened pipe %s to machine %s and bound anonymously.\n",
2280 result->pipe_name, cli->desthost ));
2285 /****************************************************************************
2286 Free function for NTLMSSP auth.
2287 ****************************************************************************/
2289 static void cli_ntlmssp_auth_free(struct cli_pipe_auth_data *auth)
2291 if (auth->a_u.ntlmssp_state) {
2292 ntlmssp_end(&auth->a_u.ntlmssp_state);
2293 auth->a_u.ntlmssp_state = NULL;
2297 /****************************************************************************
2298 Open a named pipe to an SMB server and bind using NTLMSSP or SPNEGO NTLMSSP
2299 ****************************************************************************/
2301 static struct rpc_pipe_client *cli_rpc_pipe_open_ntlmssp_internal(struct cli_state *cli,
2303 enum pipe_auth_type auth_type,
2304 enum pipe_auth_level auth_level,
2306 const char *username,
2307 const char *password,
2310 struct rpc_pipe_client *result;
2311 NTLMSSP_STATE *ntlmssp_state = NULL;
2313 result = cli_rpc_pipe_open(cli, pipe_idx, perr);
2314 if (result == NULL) {
2318 result->auth.cli_auth_data_free_func = cli_ntlmssp_auth_free;
2320 result->domain = domain;
2321 result->user_name = username;
2322 pwd_set_cleartext(&result->pwd, password);
2324 *perr = ntlmssp_client_start(&ntlmssp_state);
2325 if (!NT_STATUS_IS_OK(*perr)) {
2329 result->auth.a_u.ntlmssp_state = ntlmssp_state;
2331 *perr = ntlmssp_set_username(ntlmssp_state, username);
2332 if (!NT_STATUS_IS_OK(*perr)) {
2336 *perr = ntlmssp_set_domain(ntlmssp_state, domain);
2337 if (!NT_STATUS_IS_OK(*perr)) {
2341 if (cli->pwd.null_pwd) {
2342 *perr = ntlmssp_set_password(ntlmssp_state, NULL);
2343 if (!NT_STATUS_IS_OK(*perr)) {
2347 *perr = ntlmssp_set_password(ntlmssp_state, password);
2348 if (!NT_STATUS_IS_OK(*perr)) {
2353 /* Turn off sign+seal to allow selected auth level to turn it back on. */
2354 ntlmssp_state->neg_flags &= ~(NTLMSSP_NEGOTIATE_SIGN|NTLMSSP_NEGOTIATE_SEAL);
2356 if (auth_level == PIPE_AUTH_LEVEL_INTEGRITY) {
2357 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
2358 } else if (auth_level == PIPE_AUTH_LEVEL_PRIVACY) {
2359 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SEAL | NTLMSSP_NEGOTIATE_SIGN;
2362 *perr = rpc_pipe_bind(result, auth_type, auth_level);
2363 if (!NT_STATUS_IS_OK(*perr)) {
2364 DEBUG(0, ("cli_rpc_pipe_open_ntlmssp_internal: cli_rpc_pipe_bind failed with error %s\n",
2365 nt_errstr(*perr) ));
2369 DEBUG(10,("cli_rpc_pipe_open_ntlmssp_internal: opened pipe %s to "
2370 "machine %s and bound NTLMSSP as user %s\\%s.\n",
2371 result->pipe_name, cli->desthost,
2372 domain, username ));
2378 cli_rpc_pipe_close(result);
2382 /****************************************************************************
2384 Open a named pipe to an SMB server and bind using NTLMSSP (bind type 10)
2385 ****************************************************************************/
2387 struct rpc_pipe_client *cli_rpc_pipe_open_ntlmssp(struct cli_state *cli,
2389 enum pipe_auth_level auth_level,
2391 const char *username,
2392 const char *password,
2395 return cli_rpc_pipe_open_ntlmssp_internal(cli,
2397 PIPE_AUTH_TYPE_NTLMSSP,
2405 /****************************************************************************
2407 Open a named pipe to an SMB server and bind using spnego NTLMSSP (bind type 9)
2408 ****************************************************************************/
2410 struct rpc_pipe_client *cli_rpc_pipe_open_spnego_ntlmssp(struct cli_state *cli,
2412 enum pipe_auth_level auth_level,
2414 const char *username,
2415 const char *password,
2418 return cli_rpc_pipe_open_ntlmssp_internal(cli,
2420 PIPE_AUTH_TYPE_SPNEGO_NTLMSSP,
2428 /****************************************************************************
2429 Get a the schannel session key out of an already opened netlogon pipe.
2430 ****************************************************************************/
2431 static bool get_schannel_session_key_common(struct rpc_pipe_client *netlogon_pipe,
2432 struct cli_state *cli,
2437 uint32 sec_chan_type = 0;
2438 unsigned char machine_pwd[16];
2439 const char *machine_account;
2441 /* Get the machine account credentials from secrets.tdb. */
2442 if (!get_trust_pw_hash(domain, machine_pwd, &machine_account,
2445 DEBUG(0, ("get_schannel_session_key: could not fetch "
2446 "trust account password for domain '%s'\n",
2448 *perr = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
2452 *perr = rpccli_netlogon_setup_creds(netlogon_pipe,
2453 cli->desthost, /* server name */
2454 domain, /* domain */
2455 global_myname(), /* client name */
2456 machine_account, /* machine account name */
2461 if (!NT_STATUS_IS_OK(*perr)) {
2462 DEBUG(3,("get_schannel_session_key_common: rpccli_netlogon_setup_creds "
2463 "failed with result %s to server %s, domain %s, machine account %s.\n",
2464 nt_errstr(*perr), cli->desthost, domain, machine_account ));
2468 if (((*pneg_flags) & NETLOGON_NEG_SCHANNEL) == 0) {
2469 DEBUG(3, ("get_schannel_session_key: Server %s did not offer schannel\n",
2471 *perr = NT_STATUS_INVALID_NETWORK_RESPONSE;
2478 /****************************************************************************
2479 Open a netlogon pipe and get the schannel session key.
2480 Now exposed to external callers.
2481 ****************************************************************************/
2484 struct rpc_pipe_client *get_schannel_session_key(struct cli_state *cli,
2489 struct rpc_pipe_client *netlogon_pipe = NULL;
2491 netlogon_pipe = cli_rpc_pipe_open_noauth(cli, PI_NETLOGON, perr);
2492 if (!netlogon_pipe) {
2496 if (!get_schannel_session_key_common(netlogon_pipe, cli, domain,
2499 cli_rpc_pipe_close(netlogon_pipe);
2503 return netlogon_pipe;
2506 /****************************************************************************
2508 Open a named pipe to an SMB server and bind using schannel (bind type 68)
2509 using session_key. sign and seal.
2510 ****************************************************************************/
2512 struct rpc_pipe_client *cli_rpc_pipe_open_schannel_with_key(struct cli_state *cli,
2514 enum pipe_auth_level auth_level,
2516 const struct dcinfo *pdc,
2519 struct rpc_pipe_client *result;
2521 result = cli_rpc_pipe_open(cli, pipe_idx, perr);
2522 if (result == NULL) {
2526 result->auth.a_u.schannel_auth = TALLOC_ZERO_P(
2527 result, struct schannel_auth_struct);
2528 if (!result->auth.a_u.schannel_auth) {
2529 cli_rpc_pipe_close(result);
2530 *perr = NT_STATUS_NO_MEMORY;
2534 result->domain = domain;
2535 memcpy(result->auth.a_u.schannel_auth->sess_key, pdc->sess_key, 16);
2537 *perr = rpc_pipe_bind(result, PIPE_AUTH_TYPE_SCHANNEL, auth_level);
2538 if (!NT_STATUS_IS_OK(*perr)) {
2539 DEBUG(0, ("cli_rpc_pipe_open_schannel_with_key: cli_rpc_pipe_bind failed with error %s\n",
2540 nt_errstr(*perr) ));
2541 cli_rpc_pipe_close(result);
2545 /* The credentials on a new netlogon pipe are the ones we are passed in - copy them over. */
2550 DEBUG(10,("cli_rpc_pipe_open_schannel_with_key: opened pipe %s to machine %s "
2552 "and bound using schannel.\n",
2553 result->pipe_name, cli->desthost, domain ));
2558 /****************************************************************************
2559 Open a named pipe to an SMB server and bind using schannel (bind type 68).
2560 Fetch the session key ourselves using a temporary netlogon pipe. This
2561 version uses an ntlmssp auth bound netlogon pipe to get the key.
2562 ****************************************************************************/
2564 static struct rpc_pipe_client *get_schannel_session_key_auth_ntlmssp(struct cli_state *cli,
2566 const char *username,
2567 const char *password,
2571 struct rpc_pipe_client *netlogon_pipe = NULL;
2573 netlogon_pipe = cli_rpc_pipe_open_spnego_ntlmssp(cli, PI_NETLOGON, PIPE_AUTH_LEVEL_PRIVACY, domain, username, password, perr);
2574 if (!netlogon_pipe) {
2578 if (!get_schannel_session_key_common(netlogon_pipe, cli, domain,
2581 cli_rpc_pipe_close(netlogon_pipe);
2585 return netlogon_pipe;
2588 /****************************************************************************
2589 Open a named pipe to an SMB server and bind using schannel (bind type 68).
2590 Fetch the session key ourselves using a temporary netlogon pipe. This version
2591 uses an ntlmssp bind to get the session key.
2592 ****************************************************************************/
2594 struct rpc_pipe_client *cli_rpc_pipe_open_ntlmssp_auth_schannel(struct cli_state *cli,
2596 enum pipe_auth_level auth_level,
2598 const char *username,
2599 const char *password,
2602 uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
2603 struct rpc_pipe_client *netlogon_pipe = NULL;
2604 struct rpc_pipe_client *result = NULL;
2606 netlogon_pipe = get_schannel_session_key_auth_ntlmssp(cli, domain, username,
2607 password, &neg_flags, perr);
2608 if (!netlogon_pipe) {
2609 DEBUG(0,("cli_rpc_pipe_open_ntlmssp_auth_schannel: failed to get schannel session "
2610 "key from server %s for domain %s.\n",
2611 cli->desthost, domain ));
2615 result = cli_rpc_pipe_open_schannel_with_key(cli, pipe_idx,
2617 domain, netlogon_pipe->dc, perr);
2619 /* Now we've bound using the session key we can close the netlog pipe. */
2620 cli_rpc_pipe_close(netlogon_pipe);
2625 /****************************************************************************
2626 Open a named pipe to an SMB server and bind using schannel (bind type 68).
2627 Fetch the session key ourselves using a temporary netlogon pipe.
2628 ****************************************************************************/
2630 struct rpc_pipe_client *cli_rpc_pipe_open_schannel(struct cli_state *cli,
2632 enum pipe_auth_level auth_level,
2636 uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
2637 struct rpc_pipe_client *netlogon_pipe = NULL;
2638 struct rpc_pipe_client *result = NULL;
2640 netlogon_pipe = get_schannel_session_key(cli, domain, &neg_flags, perr);
2641 if (!netlogon_pipe) {
2642 DEBUG(0,("cli_rpc_pipe_open_schannel: failed to get schannel session "
2643 "key from server %s for domain %s.\n",
2644 cli->desthost, domain ));
2648 result = cli_rpc_pipe_open_schannel_with_key(cli, pipe_idx,
2650 domain, netlogon_pipe->dc, perr);
2652 /* Now we've bound using the session key we can close the netlog pipe. */
2653 cli_rpc_pipe_close(netlogon_pipe);
2660 /****************************************************************************
2661 Free function for the kerberos spcific data.
2662 ****************************************************************************/
2664 static void kerberos_auth_struct_free(struct cli_pipe_auth_data *a)
2666 data_blob_free(&a->a_u.kerberos_auth->session_key);
2671 /****************************************************************************
2672 Open a named pipe to an SMB server and bind using krb5 (bind type 16).
2673 The idea is this can be called with service_princ, username and password all
2674 NULL so long as the caller has a TGT.
2675 ****************************************************************************/
2677 struct rpc_pipe_client *cli_rpc_pipe_open_krb5(struct cli_state *cli,
2679 enum pipe_auth_level auth_level,
2680 const char *service_princ,
2681 const char *username,
2682 const char *password,
2686 struct rpc_pipe_client *result;
2688 result = cli_rpc_pipe_open(cli, pipe_idx, perr);
2689 if (result == NULL) {
2693 /* Default service principal is "desthost$@realm" */
2694 if (!service_princ) {
2695 service_princ = talloc_asprintf(result, "%s$@%s",
2696 cli->desthost, lp_realm() );
2697 if (!service_princ) {
2698 cli_rpc_pipe_close(result);
2703 /* Only get a new TGT if username/password are given. */
2704 if (username && password) {
2705 int ret = kerberos_kinit_password(username, password, 0, NULL);
2707 cli_rpc_pipe_close(result);
2712 result->auth.a_u.kerberos_auth = TALLOC_ZERO_P(
2713 result, struct kerberos_auth_struct);
2714 if (!result->auth.a_u.kerberos_auth) {
2715 cli_rpc_pipe_close(result);
2716 *perr = NT_STATUS_NO_MEMORY;
2720 result->auth.a_u.kerberos_auth->service_principal = service_princ;
2721 result->auth.cli_auth_data_free_func = kerberos_auth_struct_free;
2723 *perr = rpc_pipe_bind(result, PIPE_AUTH_TYPE_KRB5, auth_level);
2724 if (!NT_STATUS_IS_OK(*perr)) {
2725 DEBUG(0, ("cli_rpc_pipe_open_krb5: cli_rpc_pipe_bind failed with error %s\n",
2726 nt_errstr(*perr) ));
2727 cli_rpc_pipe_close(result);
2733 DEBUG(0,("cli_rpc_pipe_open_krb5: kerberos not found at compile time.\n"));