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(current_pdu, 0, 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(¤t_pdu, 0, 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 prs_init(&auth_info, RPC_HDR_AUTH_LEN, prs_get_mem_context(rpc_out), MARSHALL);
1188 switch (auth_type) {
1189 case PIPE_AUTH_TYPE_SCHANNEL:
1190 ret = create_schannel_auth_rpc_bind_req(cli, auth_level, &hdr_auth, &auth_info);
1191 if (!NT_STATUS_IS_OK(ret)) {
1192 prs_mem_free(&auth_info);
1197 case PIPE_AUTH_TYPE_NTLMSSP:
1198 ret = create_ntlmssp_auth_rpc_bind_req(cli, auth_level, &hdr_auth, &auth_info);
1199 if (!NT_STATUS_IS_OK(ret)) {
1200 prs_mem_free(&auth_info);
1205 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
1206 ret = create_spnego_ntlmssp_auth_rpc_bind_req(cli, auth_level, &hdr_auth, &auth_info);
1207 if (!NT_STATUS_IS_OK(ret)) {
1208 prs_mem_free(&auth_info);
1213 case PIPE_AUTH_TYPE_KRB5:
1214 ret = create_krb5_auth_bind_req(cli, auth_level, &hdr_auth, &auth_info);
1215 if (!NT_STATUS_IS_OK(ret)) {
1216 prs_mem_free(&auth_info);
1221 case PIPE_AUTH_TYPE_NONE:
1225 /* "Can't" happen. */
1226 return NT_STATUS_INVALID_INFO_CLASS;
1229 ret = create_bind_or_alt_ctx_internal(RPC_BIND,
1237 prs_mem_free(&auth_info);
1241 /*******************************************************************
1242 Create and add the NTLMSSP sign/seal auth header and data.
1243 ********************************************************************/
1245 static NTSTATUS add_ntlmssp_auth_footer(struct rpc_pipe_client *cli,
1247 uint32 ss_padding_len,
1248 prs_struct *outgoing_pdu)
1250 RPC_HDR_AUTH auth_info;
1252 DATA_BLOB auth_blob = data_blob_null;
1253 uint16 data_and_pad_len = prs_offset(outgoing_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN;
1255 if (!cli->auth.a_u.ntlmssp_state) {
1256 return NT_STATUS_INVALID_PARAMETER;
1259 /* Init and marshall the auth header. */
1260 init_rpc_hdr_auth(&auth_info,
1261 map_pipe_auth_type_to_rpc_auth_type(cli->auth.auth_type),
1262 cli->auth.auth_level,
1264 1 /* context id. */);
1266 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, outgoing_pdu, 0)) {
1267 DEBUG(0,("add_ntlmssp_auth_footer: failed to marshall RPC_HDR_AUTH.\n"));
1268 data_blob_free(&auth_blob);
1269 return NT_STATUS_NO_MEMORY;
1272 switch (cli->auth.auth_level) {
1273 case PIPE_AUTH_LEVEL_PRIVACY:
1274 /* Data portion is encrypted. */
1275 status = ntlmssp_seal_packet(cli->auth.a_u.ntlmssp_state,
1276 (unsigned char *)prs_data_p(outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
1278 (unsigned char *)prs_data_p(outgoing_pdu),
1279 (size_t)prs_offset(outgoing_pdu),
1281 if (!NT_STATUS_IS_OK(status)) {
1282 data_blob_free(&auth_blob);
1287 case PIPE_AUTH_LEVEL_INTEGRITY:
1288 /* Data is signed. */
1289 status = ntlmssp_sign_packet(cli->auth.a_u.ntlmssp_state,
1290 (unsigned char *)prs_data_p(outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
1292 (unsigned char *)prs_data_p(outgoing_pdu),
1293 (size_t)prs_offset(outgoing_pdu),
1295 if (!NT_STATUS_IS_OK(status)) {
1296 data_blob_free(&auth_blob);
1303 smb_panic("bad auth level");
1305 return NT_STATUS_INVALID_PARAMETER;
1308 /* Finally marshall the blob. */
1310 if (!prs_copy_data_in(outgoing_pdu, (const char *)auth_blob.data, NTLMSSP_SIG_SIZE)) {
1311 DEBUG(0,("add_ntlmssp_auth_footer: failed to add %u bytes auth blob.\n",
1312 (unsigned int)NTLMSSP_SIG_SIZE));
1313 data_blob_free(&auth_blob);
1314 return NT_STATUS_NO_MEMORY;
1317 data_blob_free(&auth_blob);
1318 return NT_STATUS_OK;
1321 /*******************************************************************
1322 Create and add the schannel sign/seal auth header and data.
1323 ********************************************************************/
1325 static NTSTATUS add_schannel_auth_footer(struct rpc_pipe_client *cli,
1327 uint32 ss_padding_len,
1328 prs_struct *outgoing_pdu)
1330 RPC_HDR_AUTH auth_info;
1331 RPC_AUTH_SCHANNEL_CHK verf;
1332 struct schannel_auth_struct *sas = cli->auth.a_u.schannel_auth;
1333 char *data_p = prs_data_p(outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN;
1334 size_t data_and_pad_len = prs_offset(outgoing_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN;
1337 return NT_STATUS_INVALID_PARAMETER;
1340 /* Init and marshall the auth header. */
1341 init_rpc_hdr_auth(&auth_info,
1342 map_pipe_auth_type_to_rpc_auth_type(cli->auth.auth_type),
1343 cli->auth.auth_level,
1345 1 /* context id. */);
1347 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, outgoing_pdu, 0)) {
1348 DEBUG(0,("add_schannel_auth_footer: failed to marshall RPC_HDR_AUTH.\n"));
1349 return NT_STATUS_NO_MEMORY;
1352 switch (cli->auth.auth_level) {
1353 case PIPE_AUTH_LEVEL_PRIVACY:
1354 case PIPE_AUTH_LEVEL_INTEGRITY:
1355 DEBUG(10,("add_schannel_auth_footer: SCHANNEL seq_num=%d\n",
1358 schannel_encode(sas,
1359 cli->auth.auth_level,
1360 SENDER_IS_INITIATOR,
1370 smb_panic("bad auth level");
1372 return NT_STATUS_INVALID_PARAMETER;
1375 /* Finally marshall the blob. */
1376 smb_io_rpc_auth_schannel_chk("",
1377 RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN,
1382 return NT_STATUS_OK;
1385 /*******************************************************************
1386 Calculate how much data we're going to send in this packet, also
1387 work out any sign/seal padding length.
1388 ********************************************************************/
1390 static uint32 calculate_data_len_tosend(struct rpc_pipe_client *cli,
1394 uint32 *p_ss_padding)
1396 uint32 data_space, data_len;
1398 switch (cli->auth.auth_level) {
1399 case PIPE_AUTH_LEVEL_NONE:
1400 case PIPE_AUTH_LEVEL_CONNECT:
1401 data_space = cli->max_xmit_frag - RPC_HEADER_LEN - RPC_HDR_REQ_LEN;
1402 data_len = MIN(data_space, data_left);
1405 *p_frag_len = RPC_HEADER_LEN + RPC_HDR_REQ_LEN + data_len;
1408 case PIPE_AUTH_LEVEL_INTEGRITY:
1409 case PIPE_AUTH_LEVEL_PRIVACY:
1410 /* Treat the same for all authenticated rpc requests. */
1411 switch(cli->auth.auth_type) {
1412 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
1413 case PIPE_AUTH_TYPE_NTLMSSP:
1414 *p_auth_len = NTLMSSP_SIG_SIZE;
1416 case PIPE_AUTH_TYPE_SCHANNEL:
1417 *p_auth_len = RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
1420 smb_panic("bad auth type");
1424 data_space = cli->max_xmit_frag - RPC_HEADER_LEN - RPC_HDR_REQ_LEN -
1425 RPC_HDR_AUTH_LEN - *p_auth_len;
1427 data_len = MIN(data_space, data_left);
1429 *p_ss_padding = 8 - (data_len % 8);
1431 *p_frag_len = RPC_HEADER_LEN + RPC_HDR_REQ_LEN + /* Normal headers. */
1432 data_len + *p_ss_padding + /* data plus padding. */
1433 RPC_HDR_AUTH_LEN + *p_auth_len; /* Auth header and auth data. */
1437 smb_panic("bad auth level");
1443 /*******************************************************************
1445 Does an rpc request on a pipe. Incoming data is NDR encoded in in_data.
1446 Reply is NDR encoded in out_data. Splits the data stream into RPC PDU's
1447 and deals with signing/sealing details.
1448 ********************************************************************/
1450 NTSTATUS rpc_api_pipe_req(struct rpc_pipe_client *cli,
1452 prs_struct *in_data,
1453 prs_struct *out_data)
1456 uint32 data_left = prs_offset(in_data);
1457 uint32 alloc_hint = prs_offset(in_data);
1458 uint32 data_sent_thistime = 0;
1459 uint32 current_data_offset = 0;
1460 uint32 call_id = get_rpc_call_id();
1462 prs_struct outgoing_pdu;
1464 memset(pad, '\0', 8);
1466 if (cli->max_xmit_frag < RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_MAX_SIGN_SIZE) {
1467 /* Server is screwed up ! */
1468 return NT_STATUS_INVALID_PARAMETER;
1471 prs_init(&outgoing_pdu, cli->max_xmit_frag, prs_get_mem_context(in_data), MARSHALL);
1475 RPC_HDR_REQ hdr_req;
1476 uint16 auth_len = 0;
1477 uint16 frag_len = 0;
1479 uint32 ss_padding = 0;
1481 data_sent_thistime = calculate_data_len_tosend(cli, data_left,
1482 &frag_len, &auth_len, &ss_padding);
1484 if (current_data_offset == 0) {
1485 flags = RPC_FLG_FIRST;
1488 if (data_sent_thistime == data_left) {
1489 flags |= RPC_FLG_LAST;
1492 /* Create and marshall the header and request header. */
1493 init_rpc_hdr(&hdr, RPC_REQUEST, flags, call_id, frag_len, auth_len);
1495 if(!smb_io_rpc_hdr("hdr ", &hdr, &outgoing_pdu, 0)) {
1496 prs_mem_free(&outgoing_pdu);
1497 return NT_STATUS_NO_MEMORY;
1500 /* Create the rpc request RPC_HDR_REQ */
1501 init_rpc_hdr_req(&hdr_req, alloc_hint, op_num);
1503 if(!smb_io_rpc_hdr_req("hdr_req", &hdr_req, &outgoing_pdu, 0)) {
1504 prs_mem_free(&outgoing_pdu);
1505 return NT_STATUS_NO_MEMORY;
1508 /* Copy in the data, plus any ss padding. */
1509 if (!prs_append_some_prs_data(&outgoing_pdu, in_data, current_data_offset, data_sent_thistime)) {
1510 prs_mem_free(&outgoing_pdu);
1511 return NT_STATUS_NO_MEMORY;
1514 /* Copy the sign/seal padding data. */
1516 if (!prs_copy_data_in(&outgoing_pdu, pad, ss_padding)) {
1517 prs_mem_free(&outgoing_pdu);
1518 return NT_STATUS_NO_MEMORY;
1522 /* Generate any auth sign/seal and add the auth footer. */
1524 switch (cli->auth.auth_type) {
1525 case PIPE_AUTH_TYPE_NONE:
1527 case PIPE_AUTH_TYPE_NTLMSSP:
1528 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
1529 ret = add_ntlmssp_auth_footer(cli, &hdr, ss_padding, &outgoing_pdu);
1530 if (!NT_STATUS_IS_OK(ret)) {
1531 prs_mem_free(&outgoing_pdu);
1535 case PIPE_AUTH_TYPE_SCHANNEL:
1536 ret = add_schannel_auth_footer(cli, &hdr, ss_padding, &outgoing_pdu);
1537 if (!NT_STATUS_IS_OK(ret)) {
1538 prs_mem_free(&outgoing_pdu);
1543 smb_panic("bad auth type");
1544 break; /* notreached */
1548 /* Actually send the packet. */
1549 if (flags & RPC_FLG_LAST) {
1550 /* Last packet - send the data, get the reply and return. */
1551 ret = rpc_api_pipe(cli, &outgoing_pdu, out_data, RPC_RESPONSE);
1552 prs_mem_free(&outgoing_pdu);
1554 if (DEBUGLEVEL >= 50) {
1555 char *dump_name = NULL;
1556 /* Also capture received data */
1557 if (asprintf(&dump_name, "%s/reply_%s_%d",
1558 get_dyn_LOGFILEBASE(), cli->pipe_name,
1560 prs_dump(dump_name, op_num, out_data);
1561 SAFE_FREE(dump_name);
1567 /* More packets to come - write and continue. */
1568 ssize_t num_written = cli_write(cli->cli, cli->fnum, 8, /* 8 means message mode. */
1569 prs_data_p(&outgoing_pdu),
1571 (size_t)hdr.frag_len);
1573 if (num_written != hdr.frag_len) {
1574 prs_mem_free(&outgoing_pdu);
1575 return cli_get_nt_error(cli->cli);
1579 current_data_offset += data_sent_thistime;
1580 data_left -= data_sent_thistime;
1582 /* Reset the marshalling position back to zero. */
1583 if (!prs_set_offset(&outgoing_pdu, 0)) {
1584 prs_mem_free(&outgoing_pdu);
1585 return NT_STATUS_NO_MEMORY;
1590 /****************************************************************************
1591 Set the handle state.
1592 ****************************************************************************/
1594 static bool rpc_pipe_set_hnd_state(struct rpc_pipe_client *cli,
1595 const char *pipe_name, uint16 device_state)
1597 bool state_set = False;
1599 uint16 setup[2]; /* only need 2 uint16 setup parameters */
1600 char *rparam = NULL;
1602 uint32 rparam_len, rdata_len;
1604 if (pipe_name == NULL)
1607 DEBUG(5,("Set Handle state Pipe[%x]: %s - device state:%x\n",
1608 cli->fnum, pipe_name, device_state));
1610 /* create parameters: device state */
1611 SSVAL(param, 0, device_state);
1613 /* create setup parameters. */
1615 setup[1] = cli->fnum; /* pipe file handle. got this from an SMBOpenX. */
1617 /* send the data on \PIPE\ */
1618 if (cli_api_pipe(cli->cli, "\\PIPE\\",
1619 setup, 2, 0, /* setup, length, max */
1620 param, 2, 0, /* param, length, max */
1621 NULL, 0, 1024, /* data, length, max */
1622 &rparam, &rparam_len, /* return param, length */
1623 &rdata, &rdata_len)) /* return data, length */
1625 DEBUG(5, ("Set Handle state: return OK\n"));
1636 /****************************************************************************
1637 Check the rpc bind acknowledge response.
1638 ****************************************************************************/
1640 static bool valid_pipe_name(const int pipe_idx, RPC_IFACE *abstract, RPC_IFACE *transfer)
1642 if ( pipe_idx >= PI_MAX_PIPES ) {
1643 DEBUG(0,("valid_pipe_name: Programmer error! Invalid pipe index [%d]\n",
1648 DEBUG(5,("Bind Abstract Syntax: "));
1649 dump_data(5, (uint8 *)&pipe_names[pipe_idx].abstr_syntax,
1650 sizeof(pipe_names[pipe_idx].abstr_syntax));
1651 DEBUG(5,("Bind Transfer Syntax: "));
1652 dump_data(5, (uint8 *)&pipe_names[pipe_idx].trans_syntax,
1653 sizeof(pipe_names[pipe_idx].trans_syntax));
1655 /* copy the required syntaxes out so we can do the right bind */
1657 *transfer = pipe_names[pipe_idx].trans_syntax;
1658 *abstract = pipe_names[pipe_idx].abstr_syntax;
1663 /****************************************************************************
1664 Check the rpc bind acknowledge response.
1665 ****************************************************************************/
1667 static bool check_bind_response(RPC_HDR_BA *hdr_ba, const int pipe_idx, RPC_IFACE *transfer)
1669 if ( hdr_ba->addr.len == 0) {
1670 DEBUG(4,("Ignoring length check -- ASU bug (server didn't fill in the pipe name correctly)"));
1673 # if 0 /* JERRY -- apparently ASU forgets to fill in the server pipe name sometimes */
1674 if ( !strequal(hdr_ba->addr.str, pipe_names[pipe_idx].client_pipe) &&
1675 !strequal(hdr_ba->addr.str, pipe_names[pipe_idx].server_pipe) )
1677 DEBUG(4,("bind_rpc_pipe: pipe_name %s != expected pipe %s. oh well!\n",
1678 pipe_names[i].server_pipe ,hdr_ba->addr.str));
1682 DEBUG(5,("bind_rpc_pipe: server pipe_name found: %s\n", pipe_names[i].server_pipe ));
1684 if (pipe_names[pipe_idx].server_pipe == NULL) {
1685 DEBUG(2,("bind_rpc_pipe: pipe name %s unsupported\n", hdr_ba->addr.str));
1690 /* check the transfer syntax */
1691 if ((hdr_ba->transfer.version != transfer->version) ||
1692 (memcmp(&hdr_ba->transfer.uuid, &transfer->uuid, sizeof(transfer->uuid)) !=0)) {
1693 DEBUG(2,("bind_rpc_pipe: transfer syntax differs\n"));
1697 if (hdr_ba->res.num_results != 0x1 || hdr_ba->res.result != 0) {
1698 DEBUG(2,("bind_rpc_pipe: bind denied results: %d reason: %x\n",
1699 hdr_ba->res.num_results, hdr_ba->res.reason));
1702 DEBUG(5,("check_bind_response: accepted!\n"));
1706 /*******************************************************************
1707 Creates a DCE/RPC bind authentication response.
1708 This is the packet that is sent back to the server once we
1709 have received a BIND-ACK, to finish the third leg of
1710 the authentication handshake.
1711 ********************************************************************/
1713 static NTSTATUS create_rpc_bind_auth3(struct rpc_pipe_client *cli,
1715 enum pipe_auth_type auth_type,
1716 enum pipe_auth_level auth_level,
1717 DATA_BLOB *pauth_blob,
1718 prs_struct *rpc_out)
1721 RPC_HDR_AUTH hdr_auth;
1724 /* Create the request RPC_HDR */
1725 init_rpc_hdr(&hdr, RPC_AUTH3, RPC_FLG_FIRST|RPC_FLG_LAST, rpc_call_id,
1726 RPC_HEADER_LEN + 4 /* pad */ + RPC_HDR_AUTH_LEN + pauth_blob->length,
1727 pauth_blob->length );
1730 if(!smb_io_rpc_hdr("hdr", &hdr, rpc_out, 0)) {
1731 DEBUG(0,("create_rpc_bind_auth3: failed to marshall RPC_HDR.\n"));
1732 return NT_STATUS_NO_MEMORY;
1736 I'm puzzled about this - seems to violate the DCE RPC auth rules,
1737 about padding - shouldn't this pad to length 8 ? JRA.
1740 /* 4 bytes padding. */
1741 if (!prs_uint32("pad", rpc_out, 0, &pad)) {
1742 DEBUG(0,("create_rpc_bind_auth3: failed to marshall 4 byte pad.\n"));
1743 return NT_STATUS_NO_MEMORY;
1746 /* Create the request RPC_HDR_AUTHA */
1747 init_rpc_hdr_auth(&hdr_auth,
1748 map_pipe_auth_type_to_rpc_auth_type(auth_type),
1751 if(!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, rpc_out, 0)) {
1752 DEBUG(0,("create_rpc_bind_auth3: failed to marshall RPC_HDR_AUTHA.\n"));
1753 return NT_STATUS_NO_MEMORY;
1757 * Append the auth data to the outgoing buffer.
1760 if(!prs_copy_data_in(rpc_out, (char *)pauth_blob->data, pauth_blob->length)) {
1761 DEBUG(0,("create_rpc_bind_auth3: failed to marshall auth blob.\n"));
1762 return NT_STATUS_NO_MEMORY;
1765 return NT_STATUS_OK;
1768 /****************************************************************************
1769 Create and send the third packet in an RPC auth.
1770 ****************************************************************************/
1772 static NTSTATUS rpc_finish_auth3_bind(struct rpc_pipe_client *cli,
1776 enum pipe_auth_type auth_type,
1777 enum pipe_auth_level auth_level)
1779 DATA_BLOB server_response = data_blob_null;
1780 DATA_BLOB client_reply = data_blob_null;
1781 RPC_HDR_AUTH hdr_auth;
1786 if (!phdr->auth_len || (phdr->frag_len < phdr->auth_len + RPC_HDR_AUTH_LEN)) {
1787 return NT_STATUS_INVALID_PARAMETER;
1790 /* Process the returned NTLMSSP blob first. */
1791 if (!prs_set_offset(rbuf, phdr->frag_len - phdr->auth_len - RPC_HDR_AUTH_LEN)) {
1792 return NT_STATUS_INVALID_PARAMETER;
1795 if(!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, rbuf, 0)) {
1796 return NT_STATUS_INVALID_PARAMETER;
1799 /* TODO - check auth_type/auth_level match. */
1801 server_response = data_blob(NULL, phdr->auth_len);
1802 prs_copy_data_out((char *)server_response.data, rbuf, phdr->auth_len);
1804 nt_status = ntlmssp_update(cli->auth.a_u.ntlmssp_state,
1808 if (!NT_STATUS_IS_OK(nt_status)) {
1809 DEBUG(0,("rpc_finish_auth3_bind: NTLMSSP update using server blob failed.\n"));
1810 data_blob_free(&server_response);
1814 prs_init(&rpc_out, 0, prs_get_mem_context(rbuf), MARSHALL);
1816 nt_status = create_rpc_bind_auth3(cli, rpc_call_id,
1817 auth_type, auth_level,
1818 &client_reply, &rpc_out);
1820 if (!NT_STATUS_IS_OK(nt_status)) {
1821 prs_mem_free(&rpc_out);
1822 data_blob_free(&client_reply);
1823 data_blob_free(&server_response);
1827 /* 8 here is named pipe message mode. */
1828 ret = cli_write(cli->cli, cli->fnum, 0x8, prs_data_p(&rpc_out), 0,
1829 (size_t)prs_offset(&rpc_out));
1831 if (ret != (ssize_t)prs_offset(&rpc_out)) {
1832 DEBUG(0,("rpc_send_auth_auth3: cli_write failed. Return was %d\n", (int)ret));
1833 prs_mem_free(&rpc_out);
1834 data_blob_free(&client_reply);
1835 data_blob_free(&server_response);
1836 return cli_get_nt_error(cli->cli);
1839 DEBUG(5,("rpc_send_auth_auth3: Remote machine %s pipe %s "
1840 "fnum 0x%x sent auth3 response ok.\n",
1843 (unsigned int)cli->fnum));
1845 prs_mem_free(&rpc_out);
1846 data_blob_free(&client_reply);
1847 data_blob_free(&server_response);
1848 return NT_STATUS_OK;
1851 /*******************************************************************
1852 Creates a DCE/RPC bind alter context authentication request which
1853 may contain a spnego auth blobl
1854 ********************************************************************/
1856 static NTSTATUS create_rpc_alter_context(uint32 rpc_call_id,
1857 RPC_IFACE *abstract,
1858 RPC_IFACE *transfer,
1859 enum pipe_auth_level auth_level,
1860 const DATA_BLOB *pauth_blob, /* spnego auth blob already created. */
1861 prs_struct *rpc_out)
1863 RPC_HDR_AUTH hdr_auth;
1864 prs_struct auth_info;
1865 NTSTATUS ret = NT_STATUS_OK;
1867 ZERO_STRUCT(hdr_auth);
1868 prs_init(&auth_info, RPC_HDR_AUTH_LEN, prs_get_mem_context(rpc_out), MARSHALL);
1870 /* We may change the pad length before marshalling. */
1871 init_rpc_hdr_auth(&hdr_auth, RPC_SPNEGO_AUTH_TYPE, (int)auth_level, 0, 1);
1873 if (pauth_blob->length) {
1874 if (!prs_copy_data_in(&auth_info, (const char *)pauth_blob->data, pauth_blob->length)) {
1875 prs_mem_free(&auth_info);
1876 return NT_STATUS_NO_MEMORY;
1880 ret = create_bind_or_alt_ctx_internal(RPC_ALTCONT,
1887 prs_mem_free(&auth_info);
1891 /*******************************************************************
1892 Third leg of the SPNEGO bind mechanism - sends alter context PDU
1893 and gets a response.
1894 ********************************************************************/
1896 static NTSTATUS rpc_finish_spnego_ntlmssp_bind(struct rpc_pipe_client *cli,
1900 RPC_IFACE *abstract,
1901 RPC_IFACE *transfer,
1902 enum pipe_auth_type auth_type,
1903 enum pipe_auth_level auth_level)
1905 DATA_BLOB server_spnego_response = data_blob_null;
1906 DATA_BLOB server_ntlm_response = data_blob_null;
1907 DATA_BLOB client_reply = data_blob_null;
1908 DATA_BLOB tmp_blob = data_blob_null;
1909 RPC_HDR_AUTH hdr_auth;
1913 if (!phdr->auth_len || (phdr->frag_len < phdr->auth_len + RPC_HDR_AUTH_LEN)) {
1914 return NT_STATUS_INVALID_PARAMETER;
1917 /* Process the returned NTLMSSP blob first. */
1918 if (!prs_set_offset(rbuf, phdr->frag_len - phdr->auth_len - RPC_HDR_AUTH_LEN)) {
1919 return NT_STATUS_INVALID_PARAMETER;
1922 if(!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, rbuf, 0)) {
1923 return NT_STATUS_INVALID_PARAMETER;
1926 server_spnego_response = data_blob(NULL, phdr->auth_len);
1927 prs_copy_data_out((char *)server_spnego_response.data, rbuf, phdr->auth_len);
1929 /* The server might give us back two challenges - tmp_blob is for the second. */
1930 if (!spnego_parse_challenge(server_spnego_response, &server_ntlm_response, &tmp_blob)) {
1931 data_blob_free(&server_spnego_response);
1932 data_blob_free(&server_ntlm_response);
1933 data_blob_free(&tmp_blob);
1934 return NT_STATUS_INVALID_PARAMETER;
1937 /* We're finished with the server spnego response and the tmp_blob. */
1938 data_blob_free(&server_spnego_response);
1939 data_blob_free(&tmp_blob);
1941 nt_status = ntlmssp_update(cli->auth.a_u.ntlmssp_state,
1942 server_ntlm_response,
1945 /* Finished with the server_ntlm response */
1946 data_blob_free(&server_ntlm_response);
1948 if (!NT_STATUS_IS_OK(nt_status)) {
1949 DEBUG(0,("rpc_finish_spnego_ntlmssp_bind: NTLMSSP update using server blob failed.\n"));
1950 data_blob_free(&client_reply);
1954 /* SPNEGO wrap the client reply. */
1955 tmp_blob = spnego_gen_auth(client_reply);
1956 data_blob_free(&client_reply);
1957 client_reply = tmp_blob;
1958 tmp_blob = data_blob_null; /* Ensure it's safe to free this just in case. */
1960 /* Now prepare the alter context pdu. */
1961 prs_init(&rpc_out, 0, prs_get_mem_context(rbuf), MARSHALL);
1963 nt_status = create_rpc_alter_context(rpc_call_id,
1970 data_blob_free(&client_reply);
1972 if (!NT_STATUS_IS_OK(nt_status)) {
1973 prs_mem_free(&rpc_out);
1977 /* Initialize the returning data struct. */
1979 prs_init(rbuf, 0, cli->mem_ctx, UNMARSHALL);
1981 nt_status = rpc_api_pipe(cli, &rpc_out, rbuf, RPC_ALTCONTRESP);
1982 if (!NT_STATUS_IS_OK(nt_status)) {
1983 prs_mem_free(&rpc_out);
1987 prs_mem_free(&rpc_out);
1989 /* Get the auth blob from the reply. */
1990 if(!smb_io_rpc_hdr("rpc_hdr ", phdr, rbuf, 0)) {
1991 DEBUG(0,("rpc_finish_spnego_ntlmssp_bind: Failed to unmarshall RPC_HDR.\n"));
1992 return NT_STATUS_BUFFER_TOO_SMALL;
1995 if (!prs_set_offset(rbuf, phdr->frag_len - phdr->auth_len - RPC_HDR_AUTH_LEN)) {
1996 return NT_STATUS_INVALID_PARAMETER;
1999 if(!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, rbuf, 0)) {
2000 return NT_STATUS_INVALID_PARAMETER;
2003 server_spnego_response = data_blob(NULL, phdr->auth_len);
2004 prs_copy_data_out((char *)server_spnego_response.data, rbuf, phdr->auth_len);
2006 /* Check we got a valid auth response. */
2007 if (!spnego_parse_auth_response(server_spnego_response, NT_STATUS_OK, OID_NTLMSSP, &tmp_blob)) {
2008 data_blob_free(&server_spnego_response);
2009 data_blob_free(&tmp_blob);
2010 return NT_STATUS_INVALID_PARAMETER;
2013 data_blob_free(&server_spnego_response);
2014 data_blob_free(&tmp_blob);
2016 DEBUG(5,("rpc_finish_spnego_ntlmssp_bind: alter context request to "
2017 "remote machine %s pipe %s fnum 0x%x.\n",
2020 (unsigned int)cli->fnum));
2022 return NT_STATUS_OK;
2025 /****************************************************************************
2027 ****************************************************************************/
2029 static NTSTATUS rpc_pipe_bind(struct rpc_pipe_client *cli,
2030 enum pipe_auth_type auth_type,
2031 enum pipe_auth_level auth_level)
2042 DEBUG(5,("Bind RPC Pipe[%x]: %s auth_type %u, auth_level %u\n",
2043 (unsigned int)cli->fnum,
2045 (unsigned int)auth_type,
2046 (unsigned int)auth_level ));
2048 if (!valid_pipe_name(cli->pipe_idx, &abstract, &transfer)) {
2049 return NT_STATUS_INVALID_PARAMETER;
2052 prs_init(&rpc_out, 0, cli->mem_ctx, MARSHALL);
2054 rpc_call_id = get_rpc_call_id();
2056 /* Marshall the outgoing data. */
2057 status = create_rpc_bind_req(cli, &rpc_out, rpc_call_id,
2058 &abstract, &transfer,
2062 if (!NT_STATUS_IS_OK(status)) {
2063 prs_mem_free(&rpc_out);
2067 /* Initialize the incoming data struct. */
2068 prs_init(&rbuf, 0, cli->mem_ctx, UNMARSHALL);
2070 /* send data on \PIPE\. receive a response */
2071 status = rpc_api_pipe(cli, &rpc_out, &rbuf, RPC_BINDACK);
2072 if (!NT_STATUS_IS_OK(status)) {
2073 prs_mem_free(&rpc_out);
2077 prs_mem_free(&rpc_out);
2079 DEBUG(3,("rpc_pipe_bind: Remote machine %s pipe %s "
2080 "fnum 0x%x bind request returned ok.\n",
2083 (unsigned int)cli->fnum));
2085 /* Unmarshall the RPC header */
2086 if(!smb_io_rpc_hdr("hdr" , &hdr, &rbuf, 0)) {
2087 DEBUG(0,("rpc_pipe_bind: failed to unmarshall RPC_HDR.\n"));
2088 prs_mem_free(&rbuf);
2089 return NT_STATUS_BUFFER_TOO_SMALL;
2092 if(!smb_io_rpc_hdr_ba("", &hdr_ba, &rbuf, 0)) {
2093 DEBUG(0,("rpc_pipe_bind: Failed to unmarshall RPC_HDR_BA.\n"));
2094 prs_mem_free(&rbuf);
2095 return NT_STATUS_BUFFER_TOO_SMALL;
2098 if(!check_bind_response(&hdr_ba, cli->pipe_idx, &transfer)) {
2099 DEBUG(2,("rpc_pipe_bind: check_bind_response failed.\n"));
2100 prs_mem_free(&rbuf);
2101 return NT_STATUS_BUFFER_TOO_SMALL;
2104 cli->max_xmit_frag = hdr_ba.bba.max_tsize;
2105 cli->max_recv_frag = hdr_ba.bba.max_rsize;
2107 /* For authenticated binds we may need to do 3 or 4 leg binds. */
2110 case PIPE_AUTH_TYPE_NONE:
2111 case PIPE_AUTH_TYPE_SCHANNEL:
2112 /* Bind complete. */
2115 case PIPE_AUTH_TYPE_NTLMSSP:
2116 /* Need to send AUTH3 packet - no reply. */
2117 status = rpc_finish_auth3_bind(cli, &hdr, &rbuf, rpc_call_id,
2118 auth_type, auth_level);
2119 if (!NT_STATUS_IS_OK(status)) {
2120 prs_mem_free(&rbuf);
2125 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
2126 /* Need to send alter context request and reply. */
2127 status = rpc_finish_spnego_ntlmssp_bind(cli, &hdr, &rbuf, rpc_call_id,
2128 &abstract, &transfer,
2129 auth_type, auth_level);
2130 if (!NT_STATUS_IS_OK(status)) {
2131 prs_mem_free(&rbuf);
2136 case PIPE_AUTH_TYPE_KRB5:
2140 DEBUG(0,("cli_finish_bind_auth: unknown auth type %u\n",
2141 (unsigned int)auth_type ));
2142 prs_mem_free(&rbuf);
2143 return NT_STATUS_INVALID_INFO_CLASS;
2146 /* For NTLMSSP ensure the server gave us the auth_level we wanted. */
2147 if (auth_type == PIPE_AUTH_TYPE_NTLMSSP || auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP) {
2148 if (auth_level == PIPE_AUTH_LEVEL_INTEGRITY) {
2149 if (!(cli->auth.a_u.ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN)) {
2150 DEBUG(0,("cli_finish_bind_auth: requested NTLMSSSP signing and server refused.\n"));
2151 prs_mem_free(&rbuf);
2152 return NT_STATUS_INVALID_PARAMETER;
2155 if (auth_level == PIPE_AUTH_LEVEL_INTEGRITY) {
2156 if (!(cli->auth.a_u.ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL)) {
2157 DEBUG(0,("cli_finish_bind_auth: requested NTLMSSSP sealing and server refused.\n"));
2158 prs_mem_free(&rbuf);
2159 return NT_STATUS_INVALID_PARAMETER;
2164 /* Pipe is bound - set up auth_type and auth_level data. */
2166 cli->auth.auth_type = auth_type;
2167 cli->auth.auth_level = auth_level;
2169 prs_mem_free(&rbuf);
2170 return NT_STATUS_OK;
2173 /****************************************************************************
2174 Open a named pipe over SMB to a remote server.
2176 * CAVEAT CALLER OF THIS FUNCTION:
2177 * The returned rpc_pipe_client saves a copy of the cli_state cli pointer,
2178 * so be sure that this function is called AFTER any structure (vs pointer)
2179 * assignment of the cli. In particular, libsmbclient does structure
2180 * assignments of cli, which invalidates the data in the returned
2181 * rpc_pipe_client if this function is called before the structure assignment
2184 ****************************************************************************/
2186 static struct rpc_pipe_client *cli_rpc_pipe_open(struct cli_state *cli, int pipe_idx, NTSTATUS *perr)
2188 TALLOC_CTX *mem_ctx;
2189 struct rpc_pipe_client *result;
2192 *perr = NT_STATUS_NO_MEMORY;
2194 /* sanity check to protect against crashes */
2197 *perr = NT_STATUS_INVALID_HANDLE;
2201 /* The pipe name index must fall within our array */
2202 SMB_ASSERT((pipe_idx >= 0) && (pipe_idx < PI_MAX_PIPES));
2204 mem_ctx = talloc_init("struct rpc_pipe_client");
2205 if (mem_ctx == NULL) {
2209 result = TALLOC_ZERO_P(mem_ctx, struct rpc_pipe_client);
2210 if (result == NULL) {
2214 result->mem_ctx = mem_ctx;
2216 result->pipe_name = cli_get_pipe_name(pipe_idx);
2218 fnum = cli_nt_create(cli, result->pipe_name, DESIRED_ACCESS_PIPE);
2221 DEBUG(1,("cli_rpc_pipe_open: cli_nt_create failed on pipe %s "
2222 "to machine %s. Error was %s\n",
2223 result->pipe_name, cli->desthost,
2225 *perr = cli_get_nt_error(cli);
2226 talloc_destroy(result->mem_ctx);
2230 result->fnum = fnum;
2232 result->pipe_idx = pipe_idx;
2233 result->auth.auth_type = PIPE_AUTH_TYPE_NONE;
2234 result->auth.auth_level = PIPE_AUTH_LEVEL_NONE;
2236 if (pipe_idx == PI_NETLOGON) {
2237 /* Set up a netlogon credential chain for a netlogon pipe. */
2238 result->dc = TALLOC_ZERO_P(mem_ctx, struct dcinfo);
2239 if (result->dc == NULL) {
2240 talloc_destroy(result->mem_ctx);
2245 DLIST_ADD(cli->pipe_list, result);
2246 *perr = NT_STATUS_OK;
2251 /****************************************************************************
2252 Open a named pipe to an SMB server and bind anonymously.
2253 ****************************************************************************/
2255 struct rpc_pipe_client *cli_rpc_pipe_open_noauth(struct cli_state *cli, int pipe_idx, NTSTATUS *perr)
2257 struct rpc_pipe_client *result;
2259 result = cli_rpc_pipe_open(cli, pipe_idx, perr);
2260 if (result == NULL) {
2264 *perr = rpc_pipe_bind(result, PIPE_AUTH_TYPE_NONE, PIPE_AUTH_LEVEL_NONE);
2265 if (!NT_STATUS_IS_OK(*perr)) {
2267 if (pipe_idx == PI_DSSETUP) {
2268 /* non AD domains just don't have this pipe, avoid
2269 * level 0 statement in that case - gd */
2272 DEBUG(lvl, ("cli_rpc_pipe_open_noauth: rpc_pipe_bind for pipe %s failed with error %s\n",
2273 cli_get_pipe_name(pipe_idx), nt_errstr(*perr) ));
2274 cli_rpc_pipe_close(result);
2278 DEBUG(10,("cli_rpc_pipe_open_noauth: opened pipe %s to machine %s and bound anonymously.\n",
2279 result->pipe_name, cli->desthost ));
2284 /****************************************************************************
2285 Free function for NTLMSSP auth.
2286 ****************************************************************************/
2288 static void cli_ntlmssp_auth_free(struct cli_pipe_auth_data *auth)
2290 if (auth->a_u.ntlmssp_state) {
2291 ntlmssp_end(&auth->a_u.ntlmssp_state);
2292 auth->a_u.ntlmssp_state = NULL;
2296 /****************************************************************************
2297 Open a named pipe to an SMB server and bind using NTLMSSP or SPNEGO NTLMSSP
2298 ****************************************************************************/
2300 static struct rpc_pipe_client *cli_rpc_pipe_open_ntlmssp_internal(struct cli_state *cli,
2302 enum pipe_auth_type auth_type,
2303 enum pipe_auth_level auth_level,
2305 const char *username,
2306 const char *password,
2309 struct rpc_pipe_client *result;
2310 NTLMSSP_STATE *ntlmssp_state = NULL;
2312 result = cli_rpc_pipe_open(cli, pipe_idx, perr);
2313 if (result == NULL) {
2317 result->auth.cli_auth_data_free_func = cli_ntlmssp_auth_free;
2319 result->domain = domain;
2320 result->user_name = username;
2321 pwd_set_cleartext(&result->pwd, password);
2323 *perr = ntlmssp_client_start(&ntlmssp_state);
2324 if (!NT_STATUS_IS_OK(*perr)) {
2328 result->auth.a_u.ntlmssp_state = ntlmssp_state;
2330 *perr = ntlmssp_set_username(ntlmssp_state, cli->user_name);
2331 if (!NT_STATUS_IS_OK(*perr)) {
2335 *perr = ntlmssp_set_domain(ntlmssp_state, cli->domain);
2336 if (!NT_STATUS_IS_OK(*perr)) {
2340 if (cli->pwd.null_pwd) {
2341 *perr = ntlmssp_set_password(ntlmssp_state, NULL);
2342 if (!NT_STATUS_IS_OK(*perr)) {
2346 *perr = ntlmssp_set_password(ntlmssp_state, password);
2347 if (!NT_STATUS_IS_OK(*perr)) {
2352 /* Turn off sign+seal to allow selected auth level to turn it back on. */
2353 ntlmssp_state->neg_flags &= ~(NTLMSSP_NEGOTIATE_SIGN|NTLMSSP_NEGOTIATE_SEAL);
2355 if (auth_level == PIPE_AUTH_LEVEL_INTEGRITY) {
2356 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
2357 } else if (auth_level == PIPE_AUTH_LEVEL_PRIVACY) {
2358 ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SEAL | NTLMSSP_NEGOTIATE_SIGN;
2361 *perr = rpc_pipe_bind(result, auth_type, auth_level);
2362 if (!NT_STATUS_IS_OK(*perr)) {
2363 DEBUG(0, ("cli_rpc_pipe_open_ntlmssp_internal: cli_rpc_pipe_bind failed with error %s\n",
2364 nt_errstr(*perr) ));
2368 DEBUG(10,("cli_rpc_pipe_open_ntlmssp_internal: opened pipe %s to "
2369 "machine %s and bound NTLMSSP as user %s\\%s.\n",
2370 result->pipe_name, cli->desthost,
2371 domain, username ));
2377 cli_rpc_pipe_close(result);
2381 /****************************************************************************
2383 Open a named pipe to an SMB server and bind using NTLMSSP (bind type 10)
2384 ****************************************************************************/
2386 struct rpc_pipe_client *cli_rpc_pipe_open_ntlmssp(struct cli_state *cli,
2388 enum pipe_auth_level auth_level,
2390 const char *username,
2391 const char *password,
2394 return cli_rpc_pipe_open_ntlmssp_internal(cli,
2396 PIPE_AUTH_TYPE_NTLMSSP,
2404 /****************************************************************************
2406 Open a named pipe to an SMB server and bind using spnego NTLMSSP (bind type 9)
2407 ****************************************************************************/
2409 struct rpc_pipe_client *cli_rpc_pipe_open_spnego_ntlmssp(struct cli_state *cli,
2411 enum pipe_auth_level auth_level,
2413 const char *username,
2414 const char *password,
2417 return cli_rpc_pipe_open_ntlmssp_internal(cli,
2419 PIPE_AUTH_TYPE_SPNEGO_NTLMSSP,
2427 /****************************************************************************
2428 Get a the schannel session key out of an already opened netlogon pipe.
2429 ****************************************************************************/
2430 static bool get_schannel_session_key_common(struct rpc_pipe_client *netlogon_pipe,
2431 struct cli_state *cli,
2436 uint32 sec_chan_type = 0;
2437 unsigned char machine_pwd[16];
2438 const char *machine_account;
2440 /* Get the machine account credentials from secrets.tdb. */
2441 if (!get_trust_pw_hash(domain, machine_pwd, &machine_account,
2444 DEBUG(0, ("get_schannel_session_key: could not fetch "
2445 "trust account password for domain '%s'\n",
2447 *perr = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
2451 *perr = rpccli_netlogon_setup_creds(netlogon_pipe,
2452 cli->desthost, /* server name */
2453 domain, /* domain */
2454 global_myname(), /* client name */
2455 machine_account, /* machine account name */
2460 if (!NT_STATUS_IS_OK(*perr)) {
2461 DEBUG(3,("get_schannel_session_key_common: rpccli_netlogon_setup_creds "
2462 "failed with result %s to server %s, domain %s, machine account %s.\n",
2463 nt_errstr(*perr), cli->desthost, domain, machine_account ));
2467 if (((*pneg_flags) & NETLOGON_NEG_SCHANNEL) == 0) {
2468 DEBUG(3, ("get_schannel_session_key: Server %s did not offer schannel\n",
2470 *perr = NT_STATUS_INVALID_NETWORK_RESPONSE;
2477 /****************************************************************************
2478 Open a netlogon pipe and get the schannel session key.
2479 Now exposed to external callers.
2480 ****************************************************************************/
2483 struct rpc_pipe_client *get_schannel_session_key(struct cli_state *cli,
2488 struct rpc_pipe_client *netlogon_pipe = NULL;
2490 netlogon_pipe = cli_rpc_pipe_open_noauth(cli, PI_NETLOGON, perr);
2491 if (!netlogon_pipe) {
2495 if (!get_schannel_session_key_common(netlogon_pipe, cli, domain,
2498 cli_rpc_pipe_close(netlogon_pipe);
2502 return netlogon_pipe;
2505 /****************************************************************************
2507 Open a named pipe to an SMB server and bind using schannel (bind type 68)
2508 using session_key. sign and seal.
2509 ****************************************************************************/
2511 struct rpc_pipe_client *cli_rpc_pipe_open_schannel_with_key(struct cli_state *cli,
2513 enum pipe_auth_level auth_level,
2515 const struct dcinfo *pdc,
2518 struct rpc_pipe_client *result;
2520 result = cli_rpc_pipe_open(cli, pipe_idx, perr);
2521 if (result == NULL) {
2525 result->auth.a_u.schannel_auth = TALLOC_ZERO_P(result->mem_ctx, struct schannel_auth_struct);
2526 if (!result->auth.a_u.schannel_auth) {
2527 cli_rpc_pipe_close(result);
2528 *perr = NT_STATUS_NO_MEMORY;
2532 result->domain = domain;
2533 memcpy(result->auth.a_u.schannel_auth->sess_key, pdc->sess_key, 16);
2535 *perr = rpc_pipe_bind(result, PIPE_AUTH_TYPE_SCHANNEL, auth_level);
2536 if (!NT_STATUS_IS_OK(*perr)) {
2537 DEBUG(0, ("cli_rpc_pipe_open_schannel_with_key: cli_rpc_pipe_bind failed with error %s\n",
2538 nt_errstr(*perr) ));
2539 cli_rpc_pipe_close(result);
2543 /* The credentials on a new netlogon pipe are the ones we are passed in - copy them over. */
2548 DEBUG(10,("cli_rpc_pipe_open_schannel_with_key: opened pipe %s to machine %s "
2550 "and bound using schannel.\n",
2551 result->pipe_name, cli->desthost, domain ));
2556 /****************************************************************************
2557 Open a named pipe to an SMB server and bind using schannel (bind type 68).
2558 Fetch the session key ourselves using a temporary netlogon pipe. This
2559 version uses an ntlmssp auth bound netlogon pipe to get the key.
2560 ****************************************************************************/
2562 static struct rpc_pipe_client *get_schannel_session_key_auth_ntlmssp(struct cli_state *cli,
2564 const char *username,
2565 const char *password,
2569 struct rpc_pipe_client *netlogon_pipe = NULL;
2571 netlogon_pipe = cli_rpc_pipe_open_spnego_ntlmssp(cli, PI_NETLOGON, PIPE_AUTH_LEVEL_PRIVACY, domain, username, password, perr);
2572 if (!netlogon_pipe) {
2576 if (!get_schannel_session_key_common(netlogon_pipe, cli, domain,
2579 cli_rpc_pipe_close(netlogon_pipe);
2583 return netlogon_pipe;
2586 /****************************************************************************
2587 Open a named pipe to an SMB server and bind using schannel (bind type 68).
2588 Fetch the session key ourselves using a temporary netlogon pipe. This version
2589 uses an ntlmssp bind to get the session key.
2590 ****************************************************************************/
2592 struct rpc_pipe_client *cli_rpc_pipe_open_ntlmssp_auth_schannel(struct cli_state *cli,
2594 enum pipe_auth_level auth_level,
2596 const char *username,
2597 const char *password,
2600 uint32 neg_flags = NETLOGON_NEG_SELECT_AUTH2_FLAGS|NETLOGON_NEG_SCHANNEL;
2601 struct rpc_pipe_client *netlogon_pipe = NULL;
2602 struct rpc_pipe_client *result = NULL;
2604 netlogon_pipe = get_schannel_session_key_auth_ntlmssp(cli, domain, username,
2605 password, &neg_flags, perr);
2606 if (!netlogon_pipe) {
2607 DEBUG(0,("cli_rpc_pipe_open_ntlmssp_auth_schannel: failed to get schannel session "
2608 "key from server %s for domain %s.\n",
2609 cli->desthost, domain ));
2613 result = cli_rpc_pipe_open_schannel_with_key(cli, pipe_idx,
2615 domain, netlogon_pipe->dc, perr);
2617 /* Now we've bound using the session key we can close the netlog pipe. */
2618 cli_rpc_pipe_close(netlogon_pipe);
2623 /****************************************************************************
2624 Open a named pipe to an SMB server and bind using schannel (bind type 68).
2625 Fetch the session key ourselves using a temporary netlogon pipe.
2626 ****************************************************************************/
2628 struct rpc_pipe_client *cli_rpc_pipe_open_schannel(struct cli_state *cli,
2630 enum pipe_auth_level auth_level,
2634 uint32 neg_flags = NETLOGON_NEG_SELECT_AUTH2_FLAGS|NETLOGON_NEG_SCHANNEL;
2635 struct rpc_pipe_client *netlogon_pipe = NULL;
2636 struct rpc_pipe_client *result = NULL;
2638 netlogon_pipe = get_schannel_session_key(cli, domain, &neg_flags, perr);
2639 if (!netlogon_pipe) {
2640 DEBUG(0,("cli_rpc_pipe_open_schannel: failed to get schannel session "
2641 "key from server %s for domain %s.\n",
2642 cli->desthost, domain ));
2646 result = cli_rpc_pipe_open_schannel_with_key(cli, pipe_idx,
2648 domain, netlogon_pipe->dc, perr);
2650 /* Now we've bound using the session key we can close the netlog pipe. */
2651 cli_rpc_pipe_close(netlogon_pipe);
2658 /****************************************************************************
2659 Free function for the kerberos spcific data.
2660 ****************************************************************************/
2662 static void kerberos_auth_struct_free(struct cli_pipe_auth_data *a)
2664 data_blob_free(&a->a_u.kerberos_auth->session_key);
2669 /****************************************************************************
2670 Open a named pipe to an SMB server and bind using krb5 (bind type 16).
2671 The idea is this can be called with service_princ, username and password all
2672 NULL so long as the caller has a TGT.
2673 ****************************************************************************/
2675 struct rpc_pipe_client *cli_rpc_pipe_open_krb5(struct cli_state *cli,
2677 enum pipe_auth_level auth_level,
2678 const char *service_princ,
2679 const char *username,
2680 const char *password,
2684 struct rpc_pipe_client *result;
2686 result = cli_rpc_pipe_open(cli, pipe_idx, perr);
2687 if (result == NULL) {
2691 /* Default service principal is "desthost$@realm" */
2692 if (!service_princ) {
2693 service_princ = talloc_asprintf(result->mem_ctx, "%s$@%s",
2694 cli->desthost, lp_realm() );
2695 if (!service_princ) {
2696 cli_rpc_pipe_close(result);
2701 /* Only get a new TGT if username/password are given. */
2702 if (username && password) {
2703 int ret = kerberos_kinit_password(username, password, 0, NULL);
2705 cli_rpc_pipe_close(result);
2710 result->auth.a_u.kerberos_auth = TALLOC_ZERO_P(result->mem_ctx, struct kerberos_auth_struct);
2711 if (!result->auth.a_u.kerberos_auth) {
2712 cli_rpc_pipe_close(result);
2713 *perr = NT_STATUS_NO_MEMORY;
2717 result->auth.a_u.kerberos_auth->service_principal = service_princ;
2718 result->auth.cli_auth_data_free_func = kerberos_auth_struct_free;
2720 *perr = rpc_pipe_bind(result, PIPE_AUTH_TYPE_KRB5, auth_level);
2721 if (!NT_STATUS_IS_OK(*perr)) {
2722 DEBUG(0, ("cli_rpc_pipe_open_krb5: cli_rpc_pipe_bind failed with error %s\n",
2723 nt_errstr(*perr) ));
2724 cli_rpc_pipe_close(result);
2730 DEBUG(0,("cli_rpc_pipe_open_krb5: kerberos not found at compile time.\n"));