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error-codes: add some service related error codes.
[Samba/bb.git] / source / rpc_client / cli_pipe.c
blob1442a3c1b8cfc26766df8547f3de75a50b4b85da
1 /*
2 * Unix SMB/CIFS implementation.
3 * RPC Pipe client / server routines
4 * Largely rewritten by Jeremy Allison 2005.
5 *
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.
10 *
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.
15 *
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/>.
18 */
19
20 #include "includes.h"
21 #include "librpc/gen_ndr/cli_epmapper.h"
22
23 #undef DBGC_CLASS
24 #define DBGC_CLASS DBGC_RPC_CLI
25
26 /*******************************************************************
27 interface/version dce/rpc pipe identification
28 ********************************************************************/
29
30 #define PIPE_SRVSVC "\\PIPE\\srvsvc"
31 #define PIPE_SAMR "\\PIPE\\samr"
32 #define PIPE_WINREG "\\PIPE\\winreg"
33 #define PIPE_WKSSVC "\\PIPE\\wkssvc"
34 #define PIPE_NETLOGON "\\PIPE\\NETLOGON"
35 #define PIPE_NTLSA "\\PIPE\\ntlsa"
36 #define PIPE_NTSVCS "\\PIPE\\ntsvcs"
37 #define PIPE_LSASS "\\PIPE\\lsass"
38 #define PIPE_LSARPC "\\PIPE\\lsarpc"
39 #define PIPE_SPOOLSS "\\PIPE\\spoolss"
40 #define PIPE_NETDFS "\\PIPE\\netdfs"
41 #define PIPE_ECHO "\\PIPE\\rpcecho"
42 #define PIPE_SHUTDOWN "\\PIPE\\initshutdown"
43 #define PIPE_EPM "\\PIPE\\epmapper"
44 #define PIPE_SVCCTL "\\PIPE\\svcctl"
45 #define PIPE_EVENTLOG "\\PIPE\\eventlog"
46 #define PIPE_EPMAPPER "\\PIPE\\epmapper"
47 #define PIPE_DRSUAPI "\\PIPE\\drsuapi"
48
49 /*
50 * IMPORTANT!! If you update this structure, make sure to
51 * update the index #defines in smb.h.
52 */
53
54 static const struct pipe_id_info {
55 /* the names appear not to matter: the syntaxes _do_ matter */
56
57 const char *client_pipe;
58 const RPC_IFACE *abstr_syntax; /* this one is the abstract syntax id */
59 } pipe_names [] =
60 {
61 { PIPE_LSARPC, &ndr_table_lsarpc.syntax_id },
62 { PIPE_LSARPC, &ndr_table_dssetup.syntax_id },
63 { PIPE_SAMR, &ndr_table_samr.syntax_id },
64 { PIPE_NETLOGON, &ndr_table_netlogon.syntax_id },
65 { PIPE_SRVSVC, &ndr_table_srvsvc.syntax_id },
66 { PIPE_WKSSVC, &ndr_table_wkssvc.syntax_id },
67 { PIPE_WINREG, &ndr_table_winreg.syntax_id },
68 { PIPE_SPOOLSS, &syntax_spoolss },
69 { PIPE_NETDFS, &ndr_table_netdfs.syntax_id },
70 { PIPE_ECHO, &ndr_table_rpcecho.syntax_id },
71 { PIPE_SHUTDOWN, &ndr_table_initshutdown.syntax_id },
72 { PIPE_SVCCTL, &ndr_table_svcctl.syntax_id },
73 { PIPE_EVENTLOG, &ndr_table_eventlog.syntax_id },
74 { PIPE_NTSVCS, &ndr_table_ntsvcs.syntax_id },
75 { PIPE_EPMAPPER, &ndr_table_epmapper.syntax_id },
76 { PIPE_DRSUAPI, &ndr_table_drsuapi.syntax_id },
77 { NULL, NULL }
78 };
79
80 /****************************************************************************
81 Return the pipe name from the interface.
82 ****************************************************************************/
83
84 const char *cli_get_pipe_name_from_iface(TALLOC_CTX *mem_ctx,
85 struct cli_state *cli,
86 const struct ndr_syntax_id *interface)
87 {
88 int i;
89 for (i = 0; pipe_names[i].client_pipe; i++) {
90 if (ndr_syntax_id_equal(pipe_names[i].abstr_syntax,
91 interface)) {
92 return &pipe_names[i].client_pipe[5];
93 }
94 }
95
96 /*
97 * Here we should ask \\epmapper, but for now our code is only
98 * interested in the known pipes mentioned in pipe_names[]
99 */
100
101 return NULL;
102 }
103
104 /********************************************************************
105 Map internal value to wire value.
106 ********************************************************************/
107
108 static int map_pipe_auth_type_to_rpc_auth_type(enum pipe_auth_type auth_type)
109 {
110 switch (auth_type) {
111
112 case PIPE_AUTH_TYPE_NONE:
113 return RPC_ANONYMOUS_AUTH_TYPE;
114
115 case PIPE_AUTH_TYPE_NTLMSSP:
116 return RPC_NTLMSSP_AUTH_TYPE;
117
118 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
119 case PIPE_AUTH_TYPE_SPNEGO_KRB5:
120 return RPC_SPNEGO_AUTH_TYPE;
121
122 case PIPE_AUTH_TYPE_SCHANNEL:
123 return RPC_SCHANNEL_AUTH_TYPE;
124
125 case PIPE_AUTH_TYPE_KRB5:
126 return RPC_KRB5_AUTH_TYPE;
127
128 default:
129 DEBUG(0,("map_pipe_auth_type_to_rpc_type: unknown pipe "
130 "auth type %u\n",
131 (unsigned int)auth_type ));
132 break;
133 }
134 return -1;
135 }
136
137 /********************************************************************
138 Pipe description for a DEBUG
139 ********************************************************************/
140 static char *rpccli_pipe_txt(TALLOC_CTX *mem_ctx, struct rpc_pipe_client *cli)
141 {
142 char *result;
143
144 switch (cli->transport_type) {
145 case NCACN_NP:
146 result = talloc_asprintf(mem_ctx, "host %s, pipe %s, "
147 "fnum 0x%x",
148 cli->desthost,
149 cli->trans.np.pipe_name,
150 (unsigned int)(cli->trans.np.fnum));
151 break;
152 case NCACN_IP_TCP:
153 case NCACN_UNIX_STREAM:
154 result = talloc_asprintf(mem_ctx, "host %s, fd %d",
155 cli->desthost, cli->trans.sock.fd);
156 break;
157 default:
158 result = talloc_asprintf(mem_ctx, "host %s", cli->desthost);
159 break;
160 }
161 SMB_ASSERT(result != NULL);
162 return result;
163 }
164
165 /********************************************************************
166 Rpc pipe call id.
167 ********************************************************************/
168
169 static uint32 get_rpc_call_id(void)
170 {
171 static uint32 call_id = 0;
172 return ++call_id;
173 }
174
175 /*******************************************************************
176 Read from a RPC named pipe
177 ********************************************************************/
178 static NTSTATUS rpc_read_np(struct cli_state *cli, const char *pipe_name,
179 int fnum, char *buf, off_t offset, size_t size,
180 ssize_t *pnum_read)
181 {
182 ssize_t num_read;
183
184 num_read = cli_read(cli, fnum, buf, offset, size);
185
186 DEBUG(5,("rpc_read_np: num_read = %d, read offset: %u, to read: %u\n",
187 (int)num_read, (unsigned int)offset, (unsigned int)size));
188
189 /*
190 * A dos error of ERRDOS/ERRmoredata is not an error.
191 */
192 if (cli_is_dos_error(cli)) {
193 uint32 ecode;
194 uint8 eclass;
195 cli_dos_error(cli, &eclass, &ecode);
196 if (eclass != ERRDOS && ecode != ERRmoredata) {
197 DEBUG(0,("rpc_read: DOS Error %d/%u (%s) in cli_read "
198 "on fnum 0x%x\n", eclass, (unsigned int)ecode,
199 cli_errstr(cli), fnum));
200 return dos_to_ntstatus(eclass, ecode);
201 }
202 }
203
204 /*
205 * Likewise for NT_STATUS_BUFFER_TOO_SMALL
206 */
207 if (cli_is_nt_error(cli)) {
208 if (!NT_STATUS_EQUAL(cli_nt_error(cli),
209 NT_STATUS_BUFFER_TOO_SMALL)) {
210 DEBUG(0,("rpc_read: Error (%s) in cli_read on fnum "
211 "0x%x\n", nt_errstr(cli_nt_error(cli)), fnum));
212 return cli_nt_error(cli);
213 }
214 }
215
216 if (num_read == -1) {
217 DEBUG(0,("rpc_read: Error - cli_read on fnum 0x%x returned "
218 "-1\n", fnum));
219 return cli_get_nt_error(cli);
220 }
221
222 *pnum_read = num_read;
223 return NT_STATUS_OK;
224 }
225
226
227 /*******************************************************************
228 Use SMBreadX to get rest of one fragment's worth of rpc data.
229 Will expand the current_pdu struct to the correct size.
230 ********************************************************************/
231
232 static NTSTATUS rpc_read(struct rpc_pipe_client *cli,
233 prs_struct *current_pdu,
234 uint32 data_to_read,
235 uint32 *current_pdu_offset)
236 {
237 size_t size = (size_t)cli->max_recv_frag;
238 uint32 stream_offset = 0;
239 ssize_t num_read = 0;
240 char *pdata;
241 ssize_t extra_data_size = ((ssize_t)*current_pdu_offset) + ((ssize_t)data_to_read) - (ssize_t)prs_data_size(current_pdu);
242
243 DEBUG(5,("rpc_read: data_to_read: %u current_pdu offset: %u extra_data_size: %d\n",
244 (unsigned int)data_to_read, (unsigned int)*current_pdu_offset, (int)extra_data_size ));
245
246 /*
247 * Grow the buffer if needed to accommodate the data to be read.
248 */
249
250 if (extra_data_size > 0) {
251 if(!prs_force_grow(current_pdu, (uint32)extra_data_size)) {
252 DEBUG(0,("rpc_read: Failed to grow parse struct by %d bytes.\n", (int)extra_data_size ));
253 return NT_STATUS_NO_MEMORY;
254 }
255 DEBUG(5,("rpc_read: grew buffer by %d bytes to %u\n", (int)extra_data_size, prs_data_size(current_pdu) ));
256 }
257
258 pdata = prs_data_p(current_pdu) + *current_pdu_offset;
259
260 do {
261 NTSTATUS status;
262
263 /* read data using SMBreadX */
264 if (size > (size_t)data_to_read) {
265 size = (size_t)data_to_read;
266 }
267
268 switch (cli->transport_type) {
269 case NCACN_NP:
270 status = rpc_read_np(cli->trans.np.cli,
271 cli->trans.np.pipe_name,
272 cli->trans.np.fnum, pdata,
273 (off_t)stream_offset, size,
274 &num_read);
275 break;
276 case NCACN_IP_TCP:
277 case NCACN_UNIX_STREAM:
278 status = NT_STATUS_OK;
279 num_read = sys_read(cli->trans.sock.fd, pdata, size);
280 if (num_read == -1) {
281 status = map_nt_error_from_unix(errno);
282 }
283 if (num_read == 0) {
284 status = NT_STATUS_END_OF_FILE;
285 }
286 break;
287 default:
288 DEBUG(0, ("unknown transport type %d\n",
289 cli->transport_type));
290 return NT_STATUS_INTERNAL_ERROR;
291 }
292
293 data_to_read -= num_read;
294 stream_offset += num_read;
295 pdata += num_read;
296
297 } while (num_read > 0 && data_to_read > 0);
298 /* && err == (0x80000000 | STATUS_BUFFER_OVERFLOW)); */
299
300 /*
301 * Update the current offset into current_pdu by the amount read.
302 */
303 *current_pdu_offset += stream_offset;
304 return NT_STATUS_OK;
305 }
306
307 /****************************************************************************
308 Try and get a PDU's worth of data from current_pdu. If not, then read more
309 from the wire.
310 ****************************************************************************/
311
312 static NTSTATUS cli_pipe_get_current_pdu(struct rpc_pipe_client *cli, RPC_HDR *prhdr, prs_struct *current_pdu)
313 {
314 NTSTATUS ret = NT_STATUS_OK;
315 uint32 current_pdu_len = prs_data_size(current_pdu);
316
317 /* Ensure we have at least RPC_HEADER_LEN worth of data to parse. */
318 if (current_pdu_len < RPC_HEADER_LEN) {
319 /* rpc_read expands the current_pdu struct as neccessary. */
320 ret = rpc_read(cli, current_pdu, RPC_HEADER_LEN - current_pdu_len, &current_pdu_len);
321 if (!NT_STATUS_IS_OK(ret)) {
322 return ret;
323 }
324 }
325
326 /* This next call sets the endian bit correctly in current_pdu. */
327 /* We will propagate this to rbuf later. */
328 if(!smb_io_rpc_hdr("rpc_hdr ", prhdr, current_pdu, 0)) {
329 DEBUG(0,("cli_pipe_get_current_pdu: Failed to unmarshall RPC_HDR.\n"));
330 return NT_STATUS_BUFFER_TOO_SMALL;
331 }
332
333 /* Ensure we have frag_len bytes of data. */
334 if (current_pdu_len < prhdr->frag_len) {
335 /* rpc_read expands the current_pdu struct as neccessary. */
336 ret = rpc_read(cli, current_pdu, (uint32)prhdr->frag_len - current_pdu_len, &current_pdu_len);
337 if (!NT_STATUS_IS_OK(ret)) {
338 return ret;
339 }
340 }
341
342 if (current_pdu_len < prhdr->frag_len) {
343 return NT_STATUS_BUFFER_TOO_SMALL;
344 }
345
346 return NT_STATUS_OK;
347 }
348
349 /****************************************************************************
350 NTLMSSP specific sign/seal.
351 Virtually identical to rpc_server/srv_pipe.c:api_pipe_ntlmssp_auth_process.
352 In fact I should probably abstract these into identical pieces of code... JRA.
353 ****************************************************************************/
354
355 static NTSTATUS cli_pipe_verify_ntlmssp(struct rpc_pipe_client *cli, RPC_HDR *prhdr,
356 prs_struct *current_pdu,
357 uint8 *p_ss_padding_len)
358 {
359 RPC_HDR_AUTH auth_info;
360 uint32 save_offset = prs_offset(current_pdu);
361 uint32 auth_len = prhdr->auth_len;
362 NTLMSSP_STATE *ntlmssp_state = cli->auth->a_u.ntlmssp_state;
363 unsigned char *data = NULL;
364 size_t data_len;
365 unsigned char *full_packet_data = NULL;
366 size_t full_packet_data_len;
367 DATA_BLOB auth_blob;
368 NTSTATUS status;
369
370 if (cli->auth->auth_level == PIPE_AUTH_LEVEL_NONE
371 || cli->auth->auth_level == PIPE_AUTH_LEVEL_CONNECT) {
372 return NT_STATUS_OK;
373 }
374
375 if (!ntlmssp_state) {
376 return NT_STATUS_INVALID_PARAMETER;
377 }
378
379 /* Ensure there's enough data for an authenticated response. */
380 if ((auth_len > RPC_MAX_SIGN_SIZE) ||
381 (RPC_HEADER_LEN + RPC_HDR_RESP_LEN + RPC_HDR_AUTH_LEN + auth_len > prhdr->frag_len)) {
382 DEBUG(0,("cli_pipe_verify_ntlmssp: auth_len %u is too large.\n",
383 (unsigned int)auth_len ));
384 return NT_STATUS_BUFFER_TOO_SMALL;
385 }
386
387 /*
388 * We need the full packet data + length (minus auth stuff) as well as the packet data + length
389 * after the RPC header.
390 * We need to pass in the full packet (minus auth len) to the NTLMSSP sign and check seal
391 * functions as NTLMv2 checks the rpc headers also.
392 */
393
394 data = (unsigned char *)(prs_data_p(current_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN);
395 data_len = (size_t)(prhdr->frag_len - RPC_HEADER_LEN - RPC_HDR_RESP_LEN - RPC_HDR_AUTH_LEN - auth_len);
396
397 full_packet_data = (unsigned char *)prs_data_p(current_pdu);
398 full_packet_data_len = prhdr->frag_len - auth_len;
399
400 /* Pull the auth header and the following data into a blob. */
401 if(!prs_set_offset(current_pdu, RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len)) {
402 DEBUG(0,("cli_pipe_verify_ntlmssp: cannot move offset to %u.\n",
403 (unsigned int)RPC_HEADER_LEN + (unsigned int)RPC_HDR_RESP_LEN + (unsigned int)data_len ));
404 return NT_STATUS_BUFFER_TOO_SMALL;
405 }
406
407 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, current_pdu, 0)) {
408 DEBUG(0,("cli_pipe_verify_ntlmssp: failed to unmarshall RPC_HDR_AUTH.\n"));
409 return NT_STATUS_BUFFER_TOO_SMALL;
410 }
411
412 auth_blob.data = (unsigned char *)prs_data_p(current_pdu) + prs_offset(current_pdu);
413 auth_blob.length = auth_len;
414
415 switch (cli->auth->auth_level) {
416 case PIPE_AUTH_LEVEL_PRIVACY:
417 /* Data is encrypted. */
418 status = ntlmssp_unseal_packet(ntlmssp_state,
419 data, data_len,
420 full_packet_data,
421 full_packet_data_len,
422 &auth_blob);
423 if (!NT_STATUS_IS_OK(status)) {
424 DEBUG(0,("cli_pipe_verify_ntlmssp: failed to unseal "
425 "packet from %s. Error was %s.\n",
426 rpccli_pipe_txt(debug_ctx(), cli),
427 nt_errstr(status) ));
428 return status;
429 }
430 break;
431 case PIPE_AUTH_LEVEL_INTEGRITY:
432 /* Data is signed. */
433 status = ntlmssp_check_packet(ntlmssp_state,
434 data, data_len,
435 full_packet_data,
436 full_packet_data_len,
437 &auth_blob);
438 if (!NT_STATUS_IS_OK(status)) {
439 DEBUG(0,("cli_pipe_verify_ntlmssp: check signing failed on "
440 "packet from %s. Error was %s.\n",
441 rpccli_pipe_txt(debug_ctx(), cli),
442 nt_errstr(status) ));
443 return status;
444 }
445 break;
446 default:
447 DEBUG(0, ("cli_pipe_verify_ntlmssp: unknown internal "
448 "auth level %d\n", cli->auth->auth_level));
449 return NT_STATUS_INVALID_INFO_CLASS;
450 }
451
452 /*
453 * Return the current pointer to the data offset.
454 */
455
456 if(!prs_set_offset(current_pdu, save_offset)) {
457 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
458 (unsigned int)save_offset ));
459 return NT_STATUS_BUFFER_TOO_SMALL;
460 }
461
462 /*
463 * Remember the padding length. We must remove it from the real data
464 * stream once the sign/seal is done.
465 */
466
467 *p_ss_padding_len = auth_info.auth_pad_len;
468
469 return NT_STATUS_OK;
470 }
471
472 /****************************************************************************
473 schannel specific sign/seal.
474 ****************************************************************************/
475
476 static NTSTATUS cli_pipe_verify_schannel(struct rpc_pipe_client *cli, RPC_HDR *prhdr,
477 prs_struct *current_pdu,
478 uint8 *p_ss_padding_len)
479 {
480 RPC_HDR_AUTH auth_info;
481 RPC_AUTH_SCHANNEL_CHK schannel_chk;
482 uint32 auth_len = prhdr->auth_len;
483 uint32 save_offset = prs_offset(current_pdu);
484 struct schannel_auth_struct *schannel_auth =
485 cli->auth->a_u.schannel_auth;
486 uint32 data_len;
487
488 if (cli->auth->auth_level == PIPE_AUTH_LEVEL_NONE
489 || cli->auth->auth_level == PIPE_AUTH_LEVEL_CONNECT) {
490 return NT_STATUS_OK;
491 }
492
493 if (auth_len != RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN) {
494 DEBUG(0,("cli_pipe_verify_schannel: auth_len %u.\n", (unsigned int)auth_len ));
495 return NT_STATUS_INVALID_PARAMETER;
496 }
497
498 if (!schannel_auth) {
499 return NT_STATUS_INVALID_PARAMETER;
500 }
501
502 /* Ensure there's enough data for an authenticated response. */
503 if ((auth_len > RPC_MAX_SIGN_SIZE) ||
504 (RPC_HEADER_LEN + RPC_HDR_RESP_LEN + RPC_HDR_AUTH_LEN + auth_len > prhdr->frag_len)) {
505 DEBUG(0,("cli_pipe_verify_schannel: auth_len %u is too large.\n",
506 (unsigned int)auth_len ));
507 return NT_STATUS_INVALID_PARAMETER;
508 }
509
510 data_len = prhdr->frag_len - RPC_HEADER_LEN - RPC_HDR_RESP_LEN - RPC_HDR_AUTH_LEN - auth_len;
511
512 if(!prs_set_offset(current_pdu, RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len)) {
513 DEBUG(0,("cli_pipe_verify_schannel: cannot move offset to %u.\n",
514 (unsigned int)RPC_HEADER_LEN + RPC_HDR_RESP_LEN + data_len ));
515 return NT_STATUS_BUFFER_TOO_SMALL;
516 }
517
518 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, current_pdu, 0)) {
519 DEBUG(0,("cli_pipe_verify_schannel: failed to unmarshall RPC_HDR_AUTH.\n"));
520 return NT_STATUS_BUFFER_TOO_SMALL;
521 }
522
523 if (auth_info.auth_type != RPC_SCHANNEL_AUTH_TYPE) {
524 DEBUG(0,("cli_pipe_verify_schannel: Invalid auth info %d on schannel\n",
525 auth_info.auth_type));
526 return NT_STATUS_BUFFER_TOO_SMALL;
527 }
528
529 if(!smb_io_rpc_auth_schannel_chk("", RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN,
530 &schannel_chk, current_pdu, 0)) {
531 DEBUG(0,("cli_pipe_verify_schannel: failed to unmarshal RPC_AUTH_SCHANNEL_CHK.\n"));
532 return NT_STATUS_BUFFER_TOO_SMALL;
533 }
534
535 if (!schannel_decode(schannel_auth,
536 cli->auth->auth_level,
537 SENDER_IS_ACCEPTOR,
538 &schannel_chk,
539 prs_data_p(current_pdu)+RPC_HEADER_LEN+RPC_HDR_RESP_LEN,
540 data_len)) {
541 DEBUG(3,("cli_pipe_verify_schannel: failed to decode PDU "
542 "Connection to %s.\n",
543 rpccli_pipe_txt(debug_ctx(), cli)));
544 return NT_STATUS_INVALID_PARAMETER;
545 }
546
547 /* The sequence number gets incremented on both send and receive. */
548 schannel_auth->seq_num++;
549
550 /*
551 * Return the current pointer to the data offset.
552 */
553
554 if(!prs_set_offset(current_pdu, save_offset)) {
555 DEBUG(0,("api_pipe_auth_process: failed to set offset back to %u\n",
556 (unsigned int)save_offset ));
557 return NT_STATUS_BUFFER_TOO_SMALL;
558 }
559
560 /*
561 * Remember the padding length. We must remove it from the real data
562 * stream once the sign/seal is done.
563 */
564
565 *p_ss_padding_len = auth_info.auth_pad_len;
566
567 return NT_STATUS_OK;
568 }
569
570 /****************************************************************************
571 Do the authentication checks on an incoming pdu. Check sign and unseal etc.
572 ****************************************************************************/
573
574 static NTSTATUS cli_pipe_validate_rpc_response(struct rpc_pipe_client *cli, RPC_HDR *prhdr,
575 prs_struct *current_pdu,
576 uint8 *p_ss_padding_len)
577 {
578 NTSTATUS ret = NT_STATUS_OK;
579
580 /* Paranioa checks for auth_len. */
581 if (prhdr->auth_len) {
582 if (prhdr->auth_len > prhdr->frag_len) {
583 return NT_STATUS_INVALID_PARAMETER;
584 }
585
586 if (prhdr->auth_len + (unsigned int)RPC_HDR_AUTH_LEN < prhdr->auth_len ||
587 prhdr->auth_len + (unsigned int)RPC_HDR_AUTH_LEN < (unsigned int)RPC_HDR_AUTH_LEN) {
588 /* Integer wrap attempt. */
589 return NT_STATUS_INVALID_PARAMETER;
590 }
591 }
592
593 /*
594 * Now we have a complete RPC request PDU fragment, try and verify any auth data.
595 */
596
597 switch(cli->auth->auth_type) {
598 case PIPE_AUTH_TYPE_NONE:
599 if (prhdr->auth_len) {
600 DEBUG(3, ("cli_pipe_validate_rpc_response: "
601 "Connection to %s - got non-zero "
602 "auth len %u.\n",
603 rpccli_pipe_txt(debug_ctx(), cli),
604 (unsigned int)prhdr->auth_len ));
605 return NT_STATUS_INVALID_PARAMETER;
606 }
607 break;
608
609 case PIPE_AUTH_TYPE_NTLMSSP:
610 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
611 ret = cli_pipe_verify_ntlmssp(cli, prhdr, current_pdu, p_ss_padding_len);
612 if (!NT_STATUS_IS_OK(ret)) {
613 return ret;
614 }
615 break;
616
617 case PIPE_AUTH_TYPE_SCHANNEL:
618 ret = cli_pipe_verify_schannel(cli, prhdr, current_pdu, p_ss_padding_len);
619 if (!NT_STATUS_IS_OK(ret)) {
620 return ret;
621 }
622 break;
623
624 case PIPE_AUTH_TYPE_KRB5:
625 case PIPE_AUTH_TYPE_SPNEGO_KRB5:
626 default:
627 DEBUG(3, ("cli_pipe_validate_rpc_response: Connection "
628 "to %s - unknown internal auth type %u.\n",
629 rpccli_pipe_txt(debug_ctx(), cli),
630 cli->auth->auth_type ));
631 return NT_STATUS_INVALID_INFO_CLASS;
632 }
633
634 return NT_STATUS_OK;
635 }
636
637 /****************************************************************************
638 Do basic authentication checks on an incoming pdu.
639 ****************************************************************************/
640
641 static NTSTATUS cli_pipe_validate_current_pdu(struct rpc_pipe_client *cli, RPC_HDR *prhdr,
642 prs_struct *current_pdu,
643 uint8 expected_pkt_type,
644 char **ppdata,
645 uint32 *pdata_len,
646 prs_struct *return_data)
647 {
648
649 NTSTATUS ret = NT_STATUS_OK;
650 uint32 current_pdu_len = prs_data_size(current_pdu);
651
652 if (current_pdu_len != prhdr->frag_len) {
653 DEBUG(5,("cli_pipe_validate_current_pdu: incorrect pdu length %u, expected %u\n",
654 (unsigned int)current_pdu_len, (unsigned int)prhdr->frag_len ));
655 return NT_STATUS_INVALID_PARAMETER;
656 }
657
658 /*
659 * Point the return values at the real data including the RPC
660 * header. Just in case the caller wants it.
661 */
662 *ppdata = prs_data_p(current_pdu);
663 *pdata_len = current_pdu_len;
664
665 /* Ensure we have the correct type. */
666 switch (prhdr->pkt_type) {
667 case RPC_ALTCONTRESP:
668 case RPC_BINDACK:
669
670 /* Alter context and bind ack share the same packet definitions. */
671 break;
672
673
674 case RPC_RESPONSE:
675 {
676 RPC_HDR_RESP rhdr_resp;
677 uint8 ss_padding_len = 0;
678
679 if(!smb_io_rpc_hdr_resp("rpc_hdr_resp", &rhdr_resp, current_pdu, 0)) {
680 DEBUG(5,("cli_pipe_validate_current_pdu: failed to unmarshal RPC_HDR_RESP.\n"));
681 return NT_STATUS_BUFFER_TOO_SMALL;
682 }
683
684 /* Here's where we deal with incoming sign/seal. */
685 ret = cli_pipe_validate_rpc_response(cli, prhdr,
686 current_pdu, &ss_padding_len);
687 if (!NT_STATUS_IS_OK(ret)) {
688 return ret;
689 }
690
691 /* Point the return values at the NDR data. Remember to remove any ss padding. */
692 *ppdata = prs_data_p(current_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN;
693
694 if (current_pdu_len < RPC_HEADER_LEN + RPC_HDR_RESP_LEN + ss_padding_len) {
695 return NT_STATUS_BUFFER_TOO_SMALL;
696 }
697
698 *pdata_len = current_pdu_len - RPC_HEADER_LEN - RPC_HDR_RESP_LEN - ss_padding_len;
699
700 /* Remember to remove the auth footer. */
701 if (prhdr->auth_len) {
702 /* We've already done integer wrap tests on auth_len in
703 cli_pipe_validate_rpc_response(). */
704 if (*pdata_len < RPC_HDR_AUTH_LEN + prhdr->auth_len) {
705 return NT_STATUS_BUFFER_TOO_SMALL;
706 }
707 *pdata_len -= (RPC_HDR_AUTH_LEN + prhdr->auth_len);
708 }
709
710 DEBUG(10,("cli_pipe_validate_current_pdu: got pdu len %u, data_len %u, ss_len %u\n",
711 current_pdu_len, *pdata_len, ss_padding_len ));
712
713 /*
714 * If this is the first reply, and the allocation hint is reasonably, try and
715 * set up the return_data parse_struct to the correct size.
716 */
717
718 if ((prs_data_size(return_data) == 0) && rhdr_resp.alloc_hint && (rhdr_resp.alloc_hint < 15*1024*1024)) {
719 if (!prs_set_buffer_size(return_data, rhdr_resp.alloc_hint)) {
720 DEBUG(0,("cli_pipe_validate_current_pdu: reply alloc hint %u "
721 "too large to allocate\n",
722 (unsigned int)rhdr_resp.alloc_hint ));
723 return NT_STATUS_NO_MEMORY;
724 }
725 }
726
727 break;
728 }
729
730 case RPC_BINDNACK:
731 DEBUG(1, ("cli_pipe_validate_current_pdu: Bind NACK "
732 "received from %s!\n",
733 rpccli_pipe_txt(debug_ctx(), cli)));
734 /* Use this for now... */
735 return NT_STATUS_NETWORK_ACCESS_DENIED;
736
737 case RPC_FAULT:
738 {
739 RPC_HDR_RESP rhdr_resp;
740 RPC_HDR_FAULT fault_resp;
741
742 if(!smb_io_rpc_hdr_resp("rpc_hdr_resp", &rhdr_resp, current_pdu, 0)) {
743 DEBUG(5,("cli_pipe_validate_current_pdu: failed to unmarshal RPC_HDR_RESP.\n"));
744 return NT_STATUS_BUFFER_TOO_SMALL;
745 }
746
747 if(!smb_io_rpc_hdr_fault("fault", &fault_resp, current_pdu, 0)) {
748 DEBUG(5,("cli_pipe_validate_current_pdu: failed to unmarshal RPC_HDR_FAULT.\n"));
749 return NT_STATUS_BUFFER_TOO_SMALL;
750 }
751
752 DEBUG(1, ("cli_pipe_validate_current_pdu: RPC fault "
753 "code %s received from %s!\n",
754 dcerpc_errstr(NT_STATUS_V(fault_resp.status)),
755 rpccli_pipe_txt(debug_ctx(), cli)));
756 if (NT_STATUS_IS_OK(fault_resp.status)) {
757 return NT_STATUS_UNSUCCESSFUL;
758 } else {
759 return fault_resp.status;
760 }
761 }
762
763 default:
764 DEBUG(0, ("cli_pipe_validate_current_pdu: unknown packet type %u received "
765 "from %s!\n",
766 (unsigned int)prhdr->pkt_type,
767 rpccli_pipe_txt(debug_ctx(), cli)));
768 return NT_STATUS_INVALID_INFO_CLASS;
769 }
770
771 if (prhdr->pkt_type != expected_pkt_type) {
772 DEBUG(3, ("cli_pipe_validate_current_pdu: Connection to %s "
773 "got an unexpected RPC packet type - %u, not %u\n",
774 rpccli_pipe_txt(debug_ctx(), cli),
775 prhdr->pkt_type,
776 expected_pkt_type));
777 return NT_STATUS_INVALID_INFO_CLASS;
778 }
779
780 /* Do this just before return - we don't want to modify any rpc header
781 data before now as we may have needed to do cryptographic actions on
782 it before. */
783
784 if ((prhdr->pkt_type == RPC_BINDACK) && !(prhdr->flags & RPC_FLG_LAST)) {
785 DEBUG(5,("cli_pipe_validate_current_pdu: bug in server (AS/U?), "
786 "setting fragment first/last ON.\n"));
787 prhdr->flags |= RPC_FLG_FIRST|RPC_FLG_LAST;
788 }
789
790 return NT_STATUS_OK;
791 }
792
793 /****************************************************************************
794 Ensure we eat the just processed pdu from the current_pdu prs_struct.
795 Normally the frag_len and buffer size will match, but on the first trans
796 reply there is a theoretical chance that buffer size > frag_len, so we must
797 deal with that.
798 ****************************************************************************/
799
800 static NTSTATUS cli_pipe_reset_current_pdu(struct rpc_pipe_client *cli, RPC_HDR *prhdr, prs_struct *current_pdu)
801 {
802 uint32 current_pdu_len = prs_data_size(current_pdu);
803
804 if (current_pdu_len < prhdr->frag_len) {
805 return NT_STATUS_BUFFER_TOO_SMALL;
806 }
807
808 /* Common case. */
809 if (current_pdu_len == (uint32)prhdr->frag_len) {
810 prs_mem_free(current_pdu);
811 prs_init_empty(current_pdu, prs_get_mem_context(current_pdu), UNMARSHALL);
812 /* Make current_pdu dynamic with no memory. */
813 prs_give_memory(current_pdu, 0, 0, True);
814 return NT_STATUS_OK;
815 }
816
817 /*
818 * Oh no ! More data in buffer than we processed in current pdu.
819 * Cheat. Move the data down and shrink the buffer.
820 */
821
822 memcpy(prs_data_p(current_pdu), prs_data_p(current_pdu) + prhdr->frag_len,
823 current_pdu_len - prhdr->frag_len);
824
825 /* Remember to set the read offset back to zero. */
826 prs_set_offset(current_pdu, 0);
827
828 /* Shrink the buffer. */
829 if (!prs_set_buffer_size(current_pdu, current_pdu_len - prhdr->frag_len)) {
830 return NT_STATUS_BUFFER_TOO_SMALL;
831 }
832
833 return NT_STATUS_OK;
834 }
835
836 /****************************************************************************
837 Send data on an rpc pipe via trans. The prs_struct data must be the last
838 pdu fragment of an NDR data stream.
839
840 Receive response data from an rpc pipe, which may be large...
841
842 Read the first fragment: unfortunately have to use SMBtrans for the first
843 bit, then SMBreadX for subsequent bits.
844
845 If first fragment received also wasn't the last fragment, continue
846 getting fragments until we _do_ receive the last fragment.
847
848 Request/Response PDU's look like the following...
849
850 |<------------------PDU len----------------------------------------------->|
851 |<-HDR_LEN-->|<--REQ LEN------>|.............|<-AUTH_HDRLEN->|<-AUTH_LEN-->|
852
853 +------------+-----------------+-------------+---------------+-------------+
854 | RPC HEADER | REQ/RESP HEADER | DATA ...... | AUTH_HDR | AUTH DATA |
855 +------------+-----------------+-------------+---------------+-------------+
856
857 Where the presence of the AUTH_HDR and AUTH DATA are dependent on the
858 signing & sealing being negotiated.
859
860 ****************************************************************************/
861
862 static NTSTATUS rpc_api_pipe(struct rpc_pipe_client *cli,
863 prs_struct *data, /* Outgoing pdu fragment, already formatted for send. */
864 prs_struct *rbuf, /* Incoming reply - return as an NDR stream. */
865 uint8 expected_pkt_type)
866 {
867 NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
868 char *rparam = NULL;
869 uint32 rparam_len = 0;
870 char *pdata = prs_data_p(data);
871 uint32 data_len = prs_offset(data);
872 char *prdata = NULL;
873 uint32 rdata_len = 0;
874 uint32 max_data = cli->max_xmit_frag ? cli->max_xmit_frag : RPC_MAX_PDU_FRAG_LEN;
875 uint32 current_rbuf_offset = 0;
876 prs_struct current_pdu;
877
878 #ifdef DEVELOPER
879 /* Ensure we're not sending too much. */
880 SMB_ASSERT(data_len <= max_data);
881 #endif
882
883 /* Set up the current pdu parse struct. */
884 prs_init_empty(&current_pdu, prs_get_mem_context(rbuf), UNMARSHALL);
885
886 DEBUG(5,("rpc_api_pipe: %s\n", rpccli_pipe_txt(debug_ctx(), cli)));
887
888 switch (cli->transport_type) {
889 case NCACN_NP: {
890 uint16 setup[2];
891 /* Create setup parameters - must be in native byte order. */
892 setup[0] = TRANSACT_DCERPCCMD;
893 setup[1] = cli->trans.np.fnum; /* Pipe file handle. */
894
895 /*
896 * Send the last (or only) fragment of an RPC request. For
897 * small amounts of data (about 1024 bytes or so) the RPC
898 * request and response appears in a SMBtrans request and
899 * response.
900 */
901
902 if (!cli_api_pipe(cli->trans.np.cli, "\\PIPE\\",
903 setup, 2, 0, /* Setup, length, max */
904 NULL, 0, 0, /* Params, length, max */
905 pdata, data_len, max_data, /* data, length,
906 * max */
907 &rparam, &rparam_len, /* return params,
908 * len */
909 &prdata, &rdata_len)) /* return data, len */
910 {
911 DEBUG(0, ("rpc_api_pipe: %s returned critical error. "
912 "Error was %s\n",
913 rpccli_pipe_txt(debug_ctx(), cli),
914 cli_errstr(cli->trans.np.cli)));
915 ret = cli_get_nt_error(cli->trans.np.cli);
916 SAFE_FREE(rparam);
917 SAFE_FREE(prdata);
918 goto err;
919 }
920 break;
921 }
922 case NCACN_IP_TCP:
923 case NCACN_UNIX_STREAM:
924 {
925 ssize_t nwritten, nread;
926 nwritten = write_data(cli->trans.sock.fd, pdata, data_len);
927 if (nwritten == -1) {
928 ret = map_nt_error_from_unix(errno);
929 DEBUG(0, ("rpc_api_pipe: write_data returned %s\n",
930 strerror(errno)));
931 goto err;
932 }
933 rparam = NULL;
934 prdata = SMB_MALLOC_ARRAY(char, 1);
935 if (prdata == NULL) {
936 return NT_STATUS_NO_MEMORY;
937 }
938 nread = sys_read(cli->trans.sock.fd, prdata, 1);
939 if (nread == 0) {
940 SAFE_FREE(prdata);
941 }
942 if (nread == -1) {
943 ret = NT_STATUS_END_OF_FILE;
944 goto err;
945 }
946 rdata_len = nread;
947 break;
948 }
949 default:
950 DEBUG(0, ("unknown transport type %d\n",
951 cli->transport_type));
952 return NT_STATUS_INTERNAL_ERROR;
953 }
954
955 /* Throw away returned params - we know we won't use them. */
956
957 SAFE_FREE(rparam);
958
959 if (prdata == NULL) {
960 DEBUG(3,("rpc_api_pipe: %s failed to return data.\n",
961 rpccli_pipe_txt(debug_ctx(), cli)));
962 /* Yes - some calls can truely return no data... */
963 prs_mem_free(&current_pdu);
964 return NT_STATUS_OK;
965 }
966
967 /*
968 * Give this memory as dynamic to the current pdu.
969 */
970
971 prs_give_memory(&current_pdu, prdata, rdata_len, True);
972
973 /* Ensure we can mess with the return prs_struct. */
974 SMB_ASSERT(UNMARSHALLING(rbuf));
975 SMB_ASSERT(prs_data_size(rbuf) == 0);
976
977 /* Make rbuf dynamic with no memory. */
978 prs_give_memory(rbuf, 0, 0, True);
979
980 while(1) {
981 RPC_HDR rhdr;
982 char *ret_data = NULL;
983 uint32 ret_data_len = 0;
984
985 /* Ensure we have enough data for a pdu. */
986 ret = cli_pipe_get_current_pdu(cli, &rhdr, &current_pdu);
987 if (!NT_STATUS_IS_OK(ret)) {
988 goto err;
989 }
990
991 /* We pass in rbuf here so if the alloc hint is set correctly
992 we can set the output size and avoid reallocs. */
993
994 ret = cli_pipe_validate_current_pdu(cli, &rhdr, &current_pdu, expected_pkt_type,
995 &ret_data, &ret_data_len, rbuf);
996
997 DEBUG(10,("rpc_api_pipe: got PDU len of %u at offset %u\n",
998 prs_data_size(&current_pdu), current_rbuf_offset ));
999
1000 if (!NT_STATUS_IS_OK(ret)) {
1001 goto err;
1002 }
1003
1004 if ((rhdr.flags & RPC_FLG_FIRST)) {
1005 if (rhdr.pack_type[0] == 0) {
1006 /* Set the data type correctly for big-endian data on the first packet. */
1007 DEBUG(10,("rpc_api_pipe: On %s "
1008 "PDU data format is big-endian.\n",
1009 rpccli_pipe_txt(debug_ctx(), cli)));
1010
1011 prs_set_endian_data(rbuf, RPC_BIG_ENDIAN);
1012 } else {
1013 /* Check endianness on subsequent packets. */
1014 if (current_pdu.bigendian_data != rbuf->bigendian_data) {
1015 DEBUG(0,("rpc_api_pipe: Error : Endianness changed from %s to %s\n",
1016 rbuf->bigendian_data ? "big" : "little",
1017 current_pdu.bigendian_data ? "big" : "little" ));
1018 ret = NT_STATUS_INVALID_PARAMETER;
1019 goto err;
1020 }
1021 }
1022 }
1023
1024 /* Now copy the data portion out of the pdu into rbuf. */
1025 if (!prs_force_grow(rbuf, ret_data_len)) {
1026 ret = NT_STATUS_NO_MEMORY;
1027 goto err;
1028 }
1029 memcpy(prs_data_p(rbuf)+current_rbuf_offset, ret_data, (size_t)ret_data_len);
1030 current_rbuf_offset += ret_data_len;
1031
1032 /* See if we've finished with all the data in current_pdu yet ? */
1033 ret = cli_pipe_reset_current_pdu(cli, &rhdr, &current_pdu);
1034 if (!NT_STATUS_IS_OK(ret)) {
1035 goto err;
1036 }
1037
1038 if (rhdr.flags & RPC_FLG_LAST) {
1039 break; /* We're done. */
1040 }
1041 }
1042
1043 DEBUG(10,("rpc_api_pipe: %s returned %u bytes.\n",
1044 rpccli_pipe_txt(debug_ctx(), cli),
1045 (unsigned int)prs_data_size(rbuf) ));
1046
1047 prs_mem_free(&current_pdu);
1048 return NT_STATUS_OK;
1049
1050 err:
1051
1052 prs_mem_free(&current_pdu);
1053 prs_mem_free(rbuf);
1054 return ret;
1055 }
1056
1057 /*******************************************************************
1058 Creates krb5 auth bind.
1059 ********************************************************************/
1060
1061 static NTSTATUS create_krb5_auth_bind_req( struct rpc_pipe_client *cli,
1062 enum pipe_auth_level auth_level,
1063 RPC_HDR_AUTH *pauth_out,
1064 prs_struct *auth_data)
1065 {
1066 #ifdef HAVE_KRB5
1067 int ret;
1068 struct kerberos_auth_struct *a = cli->auth->a_u.kerberos_auth;
1069 DATA_BLOB tkt = data_blob_null;
1070 DATA_BLOB tkt_wrapped = data_blob_null;
1071
1072 /* We may change the pad length before marshalling. */
1073 init_rpc_hdr_auth(pauth_out, RPC_KRB5_AUTH_TYPE, (int)auth_level, 0, 1);
1074
1075 DEBUG(5, ("create_krb5_auth_bind_req: creating a service ticket for principal %s\n",
1076 a->service_principal ));
1077
1078 /* Create the ticket for the service principal and return it in a gss-api wrapped blob. */
1079
1080 ret = cli_krb5_get_ticket(a->service_principal, 0, &tkt,
1081 &a->session_key, (uint32)AP_OPTS_MUTUAL_REQUIRED, NULL, NULL);
1082
1083 if (ret) {
1084 DEBUG(1,("create_krb5_auth_bind_req: cli_krb5_get_ticket for principal %s "
1085 "failed with %s\n",
1086 a->service_principal,
1087 error_message(ret) ));
1088
1089 data_blob_free(&tkt);
1090 prs_mem_free(auth_data);
1091 return NT_STATUS_INVALID_PARAMETER;
1092 }
1093
1094 /* wrap that up in a nice GSS-API wrapping */
1095 tkt_wrapped = spnego_gen_krb5_wrap(tkt, TOK_ID_KRB_AP_REQ);
1096
1097 data_blob_free(&tkt);
1098
1099 /* Auth len in the rpc header doesn't include auth_header. */
1100 if (!prs_copy_data_in(auth_data, (char *)tkt_wrapped.data, tkt_wrapped.length)) {
1101 data_blob_free(&tkt_wrapped);
1102 prs_mem_free(auth_data);
1103 return NT_STATUS_NO_MEMORY;
1104 }
1105
1106 DEBUG(5, ("create_krb5_auth_bind_req: Created krb5 GSS blob :\n"));
1107 dump_data(5, tkt_wrapped.data, tkt_wrapped.length);
1108
1109 data_blob_free(&tkt_wrapped);
1110 return NT_STATUS_OK;
1111 #else
1112 return NT_STATUS_INVALID_PARAMETER;
1113 #endif
1114 }
1115
1116 /*******************************************************************
1117 Creates SPNEGO NTLMSSP auth bind.
1118 ********************************************************************/
1119
1120 static NTSTATUS create_spnego_ntlmssp_auth_rpc_bind_req( struct rpc_pipe_client *cli,
1121 enum pipe_auth_level auth_level,
1122 RPC_HDR_AUTH *pauth_out,
1123 prs_struct *auth_data)
1124 {
1125 NTSTATUS nt_status;
1126 DATA_BLOB null_blob = data_blob_null;
1127 DATA_BLOB request = data_blob_null;
1128 DATA_BLOB spnego_msg = data_blob_null;
1129
1130 /* We may change the pad length before marshalling. */
1131 init_rpc_hdr_auth(pauth_out, RPC_SPNEGO_AUTH_TYPE, (int)auth_level, 0, 1);
1132
1133 DEBUG(5, ("create_spnego_ntlmssp_auth_rpc_bind_req: Processing NTLMSSP Negotiate\n"));
1134 nt_status = ntlmssp_update(cli->auth->a_u.ntlmssp_state,
1135 null_blob,
1136 &request);
1137
1138 if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1139 data_blob_free(&request);
1140 prs_mem_free(auth_data);
1141 return nt_status;
1142 }
1143
1144 /* Wrap this in SPNEGO. */
1145 spnego_msg = gen_negTokenInit(OID_NTLMSSP, request);
1146
1147 data_blob_free(&request);
1148
1149 /* Auth len in the rpc header doesn't include auth_header. */
1150 if (!prs_copy_data_in(auth_data, (char *)spnego_msg.data, spnego_msg.length)) {
1151 data_blob_free(&spnego_msg);
1152 prs_mem_free(auth_data);
1153 return NT_STATUS_NO_MEMORY;
1154 }
1155
1156 DEBUG(5, ("create_spnego_ntlmssp_auth_rpc_bind_req: NTLMSSP Negotiate:\n"));
1157 dump_data(5, spnego_msg.data, spnego_msg.length);
1158
1159 data_blob_free(&spnego_msg);
1160 return NT_STATUS_OK;
1161 }
1162
1163 /*******************************************************************
1164 Creates NTLMSSP auth bind.
1165 ********************************************************************/
1166
1167 static NTSTATUS create_ntlmssp_auth_rpc_bind_req( struct rpc_pipe_client *cli,
1168 enum pipe_auth_level auth_level,
1169 RPC_HDR_AUTH *pauth_out,
1170 prs_struct *auth_data)
1171 {
1172 NTSTATUS nt_status;
1173 DATA_BLOB null_blob = data_blob_null;
1174 DATA_BLOB request = data_blob_null;
1175
1176 /* We may change the pad length before marshalling. */
1177 init_rpc_hdr_auth(pauth_out, RPC_NTLMSSP_AUTH_TYPE, (int)auth_level, 0, 1);
1178
1179 DEBUG(5, ("create_ntlmssp_auth_rpc_bind_req: Processing NTLMSSP Negotiate\n"));
1180 nt_status = ntlmssp_update(cli->auth->a_u.ntlmssp_state,
1181 null_blob,
1182 &request);
1183
1184 if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1185 data_blob_free(&request);
1186 prs_mem_free(auth_data);
1187 return nt_status;
1188 }
1189
1190 /* Auth len in the rpc header doesn't include auth_header. */
1191 if (!prs_copy_data_in(auth_data, (char *)request.data, request.length)) {
1192 data_blob_free(&request);
1193 prs_mem_free(auth_data);
1194 return NT_STATUS_NO_MEMORY;
1195 }
1196
1197 DEBUG(5, ("create_ntlmssp_auth_rpc_bind_req: NTLMSSP Negotiate:\n"));
1198 dump_data(5, request.data, request.length);
1199
1200 data_blob_free(&request);
1201 return NT_STATUS_OK;
1202 }
1203
1204 /*******************************************************************
1205 Creates schannel auth bind.
1206 ********************************************************************/
1207
1208 static NTSTATUS create_schannel_auth_rpc_bind_req( struct rpc_pipe_client *cli,
1209 enum pipe_auth_level auth_level,
1210 RPC_HDR_AUTH *pauth_out,
1211 prs_struct *auth_data)
1212 {
1213 RPC_AUTH_SCHANNEL_NEG schannel_neg;
1214
1215 /* We may change the pad length before marshalling. */
1216 init_rpc_hdr_auth(pauth_out, RPC_SCHANNEL_AUTH_TYPE, (int)auth_level, 0, 1);
1217
1218 /* Use lp_workgroup() if domain not specified */
1219
1220 if (!cli->auth->domain || !cli->auth->domain[0]) {
1221 cli->auth->domain = talloc_strdup(cli, lp_workgroup());
1222 if (cli->auth->domain == NULL) {
1223 return NT_STATUS_NO_MEMORY;
1224 }
1225 }
1226
1227 init_rpc_auth_schannel_neg(&schannel_neg, cli->auth->domain,
1228 global_myname());
1229
1230 /*
1231 * Now marshall the data into the auth parse_struct.
1232 */
1233
1234 if(!smb_io_rpc_auth_schannel_neg("schannel_neg",
1235 &schannel_neg, auth_data, 0)) {
1236 DEBUG(0,("Failed to marshall RPC_AUTH_SCHANNEL_NEG.\n"));
1237 prs_mem_free(auth_data);
1238 return NT_STATUS_NO_MEMORY;
1239 }
1240
1241 return NT_STATUS_OK;
1242 }
1243
1244 /*******************************************************************
1245 Creates the internals of a DCE/RPC bind request or alter context PDU.
1246 ********************************************************************/
1247
1248 static NTSTATUS create_bind_or_alt_ctx_internal(enum RPC_PKT_TYPE pkt_type,
1249 prs_struct *rpc_out,
1250 uint32 rpc_call_id,
1251 const RPC_IFACE *abstract,
1252 const RPC_IFACE *transfer,
1253 RPC_HDR_AUTH *phdr_auth,
1254 prs_struct *pauth_info)
1255 {
1256 RPC_HDR hdr;
1257 RPC_HDR_RB hdr_rb;
1258 RPC_CONTEXT rpc_ctx;
1259 uint16 auth_len = prs_offset(pauth_info);
1260 uint8 ss_padding_len = 0;
1261 uint16 frag_len = 0;
1262
1263 /* create the RPC context. */
1264 init_rpc_context(&rpc_ctx, 0 /* context id */, abstract, transfer);
1265
1266 /* create the bind request RPC_HDR_RB */
1267 init_rpc_hdr_rb(&hdr_rb, RPC_MAX_PDU_FRAG_LEN, RPC_MAX_PDU_FRAG_LEN, 0x0, &rpc_ctx);
1268
1269 /* Start building the frag length. */
1270 frag_len = RPC_HEADER_LEN + RPC_HDR_RB_LEN(&hdr_rb);
1271
1272 /* Do we need to pad ? */
1273 if (auth_len) {
1274 uint16 data_len = RPC_HEADER_LEN + RPC_HDR_RB_LEN(&hdr_rb);
1275 if (data_len % 8) {
1276 ss_padding_len = 8 - (data_len % 8);
1277 phdr_auth->auth_pad_len = ss_padding_len;
1278 }
1279 frag_len += RPC_HDR_AUTH_LEN + auth_len + ss_padding_len;
1280 }
1281
1282 /* Create the request RPC_HDR */
1283 init_rpc_hdr(&hdr, pkt_type, RPC_FLG_FIRST|RPC_FLG_LAST, rpc_call_id, frag_len, auth_len);
1284
1285 /* Marshall the RPC header */
1286 if(!smb_io_rpc_hdr("hdr" , &hdr, rpc_out, 0)) {
1287 DEBUG(0,("create_bind_or_alt_ctx_internal: failed to marshall RPC_HDR.\n"));
1288 return NT_STATUS_NO_MEMORY;
1289 }
1290
1291 /* Marshall the bind request data */
1292 if(!smb_io_rpc_hdr_rb("", &hdr_rb, rpc_out, 0)) {
1293 DEBUG(0,("create_bind_or_alt_ctx_internal: failed to marshall RPC_HDR_RB.\n"));
1294 return NT_STATUS_NO_MEMORY;
1295 }
1296
1297 /*
1298 * Grow the outgoing buffer to store any auth info.
1299 */
1300
1301 if(auth_len != 0) {
1302 if (ss_padding_len) {
1303 char pad[8];
1304 memset(pad, '\0', 8);
1305 if (!prs_copy_data_in(rpc_out, pad, ss_padding_len)) {
1306 DEBUG(0,("create_bind_or_alt_ctx_internal: failed to marshall padding.\n"));
1307 return NT_STATUS_NO_MEMORY;
1308 }
1309 }
1310
1311 if(!smb_io_rpc_hdr_auth("hdr_auth", phdr_auth, rpc_out, 0)) {
1312 DEBUG(0,("create_bind_or_alt_ctx_internal: failed to marshall RPC_HDR_AUTH.\n"));
1313 return NT_STATUS_NO_MEMORY;
1314 }
1315
1316
1317 if(!prs_append_prs_data( rpc_out, pauth_info)) {
1318 DEBUG(0,("create_bind_or_alt_ctx_internal: failed to grow parse struct to add auth.\n"));
1319 return NT_STATUS_NO_MEMORY;
1320 }
1321 }
1322
1323 return NT_STATUS_OK;
1324 }
1325
1326 /*******************************************************************
1327 Creates a DCE/RPC bind request.
1328 ********************************************************************/
1329
1330 static NTSTATUS create_rpc_bind_req(struct rpc_pipe_client *cli,
1331 prs_struct *rpc_out,
1332 uint32 rpc_call_id,
1333 const RPC_IFACE *abstract,
1334 const RPC_IFACE *transfer,
1335 enum pipe_auth_type auth_type,
1336 enum pipe_auth_level auth_level)
1337 {
1338 RPC_HDR_AUTH hdr_auth;
1339 prs_struct auth_info;
1340 NTSTATUS ret = NT_STATUS_OK;
1341
1342 ZERO_STRUCT(hdr_auth);
1343 if (!prs_init(&auth_info, RPC_HDR_AUTH_LEN, prs_get_mem_context(rpc_out), MARSHALL))
1344 return NT_STATUS_NO_MEMORY;
1345
1346 switch (auth_type) {
1347 case PIPE_AUTH_TYPE_SCHANNEL:
1348 ret = create_schannel_auth_rpc_bind_req(cli, auth_level, &hdr_auth, &auth_info);
1349 if (!NT_STATUS_IS_OK(ret)) {
1350 prs_mem_free(&auth_info);
1351 return ret;
1352 }
1353 break;
1354
1355 case PIPE_AUTH_TYPE_NTLMSSP:
1356 ret = create_ntlmssp_auth_rpc_bind_req(cli, auth_level, &hdr_auth, &auth_info);
1357 if (!NT_STATUS_IS_OK(ret)) {
1358 prs_mem_free(&auth_info);
1359 return ret;
1360 }
1361 break;
1362
1363 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
1364 ret = create_spnego_ntlmssp_auth_rpc_bind_req(cli, auth_level, &hdr_auth, &auth_info);
1365 if (!NT_STATUS_IS_OK(ret)) {
1366 prs_mem_free(&auth_info);
1367 return ret;
1368 }
1369 break;
1370
1371 case PIPE_AUTH_TYPE_KRB5:
1372 ret = create_krb5_auth_bind_req(cli, auth_level, &hdr_auth, &auth_info);
1373 if (!NT_STATUS_IS_OK(ret)) {
1374 prs_mem_free(&auth_info);
1375 return ret;
1376 }
1377 break;
1378
1379 case PIPE_AUTH_TYPE_NONE:
1380 break;
1381
1382 default:
1383 /* "Can't" happen. */
1384 return NT_STATUS_INVALID_INFO_CLASS;
1385 }
1386
1387 ret = create_bind_or_alt_ctx_internal(RPC_BIND,
1388 rpc_out,
1389 rpc_call_id,
1390 abstract,
1391 transfer,
1392 &hdr_auth,
1393 &auth_info);
1394
1395 prs_mem_free(&auth_info);
1396 return ret;
1397 }
1398
1399 /*******************************************************************
1400 Create and add the NTLMSSP sign/seal auth header and data.
1401 ********************************************************************/
1402
1403 static NTSTATUS add_ntlmssp_auth_footer(struct rpc_pipe_client *cli,
1404 RPC_HDR *phdr,
1405 uint32 ss_padding_len,
1406 prs_struct *outgoing_pdu)
1407 {
1408 RPC_HDR_AUTH auth_info;
1409 NTSTATUS status;
1410 DATA_BLOB auth_blob = data_blob_null;
1411 uint16 data_and_pad_len = prs_offset(outgoing_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN;
1412
1413 if (!cli->auth->a_u.ntlmssp_state) {
1414 return NT_STATUS_INVALID_PARAMETER;
1415 }
1416
1417 /* Init and marshall the auth header. */
1418 init_rpc_hdr_auth(&auth_info,
1419 map_pipe_auth_type_to_rpc_auth_type(
1420 cli->auth->auth_type),
1421 cli->auth->auth_level,
1422 ss_padding_len,
1423 1 /* context id. */);
1424
1425 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, outgoing_pdu, 0)) {
1426 DEBUG(0,("add_ntlmssp_auth_footer: failed to marshall RPC_HDR_AUTH.\n"));
1427 data_blob_free(&auth_blob);
1428 return NT_STATUS_NO_MEMORY;
1429 }
1430
1431 switch (cli->auth->auth_level) {
1432 case PIPE_AUTH_LEVEL_PRIVACY:
1433 /* Data portion is encrypted. */
1434 status = ntlmssp_seal_packet(cli->auth->a_u.ntlmssp_state,
1435 (unsigned char *)prs_data_p(outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
1436 data_and_pad_len,
1437 (unsigned char *)prs_data_p(outgoing_pdu),
1438 (size_t)prs_offset(outgoing_pdu),
1439 &auth_blob);
1440 if (!NT_STATUS_IS_OK(status)) {
1441 data_blob_free(&auth_blob);
1442 return status;
1443 }
1444 break;
1445
1446 case PIPE_AUTH_LEVEL_INTEGRITY:
1447 /* Data is signed. */
1448 status = ntlmssp_sign_packet(cli->auth->a_u.ntlmssp_state,
1449 (unsigned char *)prs_data_p(outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN,
1450 data_and_pad_len,
1451 (unsigned char *)prs_data_p(outgoing_pdu),
1452 (size_t)prs_offset(outgoing_pdu),
1453 &auth_blob);
1454 if (!NT_STATUS_IS_OK(status)) {
1455 data_blob_free(&auth_blob);
1456 return status;
1457 }
1458 break;
1459
1460 default:
1461 /* Can't happen. */
1462 smb_panic("bad auth level");
1463 /* Notreached. */
1464 return NT_STATUS_INVALID_PARAMETER;
1465 }
1466
1467 /* Finally marshall the blob. */
1468
1469 if (!prs_copy_data_in(outgoing_pdu, (const char *)auth_blob.data, NTLMSSP_SIG_SIZE)) {
1470 DEBUG(0,("add_ntlmssp_auth_footer: failed to add %u bytes auth blob.\n",
1471 (unsigned int)NTLMSSP_SIG_SIZE));
1472 data_blob_free(&auth_blob);
1473 return NT_STATUS_NO_MEMORY;
1474 }
1475
1476 data_blob_free(&auth_blob);
1477 return NT_STATUS_OK;
1478 }
1479
1480 /*******************************************************************
1481 Create and add the schannel sign/seal auth header and data.
1482 ********************************************************************/
1483
1484 static NTSTATUS add_schannel_auth_footer(struct rpc_pipe_client *cli,
1485 RPC_HDR *phdr,
1486 uint32 ss_padding_len,
1487 prs_struct *outgoing_pdu)
1488 {
1489 RPC_HDR_AUTH auth_info;
1490 RPC_AUTH_SCHANNEL_CHK verf;
1491 struct schannel_auth_struct *sas = cli->auth->a_u.schannel_auth;
1492 char *data_p = prs_data_p(outgoing_pdu) + RPC_HEADER_LEN + RPC_HDR_RESP_LEN;
1493 size_t data_and_pad_len = prs_offset(outgoing_pdu) - RPC_HEADER_LEN - RPC_HDR_RESP_LEN;
1494
1495 if (!sas) {
1496 return NT_STATUS_INVALID_PARAMETER;
1497 }
1498
1499 /* Init and marshall the auth header. */
1500 init_rpc_hdr_auth(&auth_info,
1501 map_pipe_auth_type_to_rpc_auth_type(cli->auth->auth_type),
1502 cli->auth->auth_level,
1503 ss_padding_len,
1504 1 /* context id. */);
1505
1506 if(!smb_io_rpc_hdr_auth("hdr_auth", &auth_info, outgoing_pdu, 0)) {
1507 DEBUG(0,("add_schannel_auth_footer: failed to marshall RPC_HDR_AUTH.\n"));
1508 return NT_STATUS_NO_MEMORY;
1509 }
1510
1511 switch (cli->auth->auth_level) {
1512 case PIPE_AUTH_LEVEL_PRIVACY:
1513 case PIPE_AUTH_LEVEL_INTEGRITY:
1514 DEBUG(10,("add_schannel_auth_footer: SCHANNEL seq_num=%d\n",
1515 sas->seq_num));
1516
1517 schannel_encode(sas,
1518 cli->auth->auth_level,
1519 SENDER_IS_INITIATOR,
1520 &verf,
1521 data_p,
1522 data_and_pad_len);
1523
1524 sas->seq_num++;
1525 break;
1526
1527 default:
1528 /* Can't happen. */
1529 smb_panic("bad auth level");
1530 /* Notreached. */
1531 return NT_STATUS_INVALID_PARAMETER;
1532 }
1533
1534 /* Finally marshall the blob. */
1535 smb_io_rpc_auth_schannel_chk("",
1536 RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN,
1537 &verf,
1538 outgoing_pdu,
1539 0);
1540
1541 return NT_STATUS_OK;
1542 }
1543
1544 /*******************************************************************
1545 Calculate how much data we're going to send in this packet, also
1546 work out any sign/seal padding length.
1547 ********************************************************************/
1548
1549 static uint32 calculate_data_len_tosend(struct rpc_pipe_client *cli,
1550 uint32 data_left,
1551 uint16 *p_frag_len,
1552 uint16 *p_auth_len,
1553 uint32 *p_ss_padding)
1554 {
1555 uint32 data_space, data_len;
1556
1557 switch (cli->auth->auth_level) {
1558 case PIPE_AUTH_LEVEL_NONE:
1559 case PIPE_AUTH_LEVEL_CONNECT:
1560 data_space = cli->max_xmit_frag - RPC_HEADER_LEN - RPC_HDR_REQ_LEN;
1561 data_len = MIN(data_space, data_left);
1562 *p_ss_padding = 0;
1563 *p_auth_len = 0;
1564 *p_frag_len = RPC_HEADER_LEN + RPC_HDR_REQ_LEN + data_len;
1565 return data_len;
1566
1567 case PIPE_AUTH_LEVEL_INTEGRITY:
1568 case PIPE_AUTH_LEVEL_PRIVACY:
1569 /* Treat the same for all authenticated rpc requests. */
1570 switch(cli->auth->auth_type) {
1571 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
1572 case PIPE_AUTH_TYPE_NTLMSSP:
1573 *p_auth_len = NTLMSSP_SIG_SIZE;
1574 break;
1575 case PIPE_AUTH_TYPE_SCHANNEL:
1576 *p_auth_len = RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN;
1577 break;
1578 default:
1579 smb_panic("bad auth type");
1580 break;
1581 }
1582
1583 data_space = cli->max_xmit_frag - RPC_HEADER_LEN - RPC_HDR_REQ_LEN -
1584 RPC_HDR_AUTH_LEN - *p_auth_len;
1585
1586 data_len = MIN(data_space, data_left);
1587 if (data_len % 8) {
1588 *p_ss_padding = 8 - (data_len % 8);
1589 }
1590 *p_frag_len = RPC_HEADER_LEN + RPC_HDR_REQ_LEN + /* Normal headers. */
1591 data_len + *p_ss_padding + /* data plus padding. */
1592 RPC_HDR_AUTH_LEN + *p_auth_len; /* Auth header and auth data. */
1593 return data_len;
1594
1595 default:
1596 smb_panic("bad auth level");
1597 /* Notreached. */
1598 return 0;
1599 }
1600 }
1601
1602 /*******************************************************************
1603 External interface.
1604 Does an rpc request on a pipe. Incoming data is NDR encoded in in_data.
1605 Reply is NDR encoded in out_data. Splits the data stream into RPC PDU's
1606 and deals with signing/sealing details.
1607 ********************************************************************/
1608
1609 NTSTATUS rpc_api_pipe_req(struct rpc_pipe_client *cli,
1610 uint8 op_num,
1611 prs_struct *in_data,
1612 prs_struct *out_data)
1613 {
1614 NTSTATUS ret;
1615 uint32 data_left = prs_offset(in_data);
1616 uint32 alloc_hint = prs_offset(in_data);
1617 uint32 data_sent_thistime = 0;
1618 uint32 current_data_offset = 0;
1619 uint32 call_id = get_rpc_call_id();
1620 char pad[8];
1621 prs_struct outgoing_pdu;
1622
1623 memset(pad, '\0', 8);
1624
1625 if (cli->max_xmit_frag < RPC_HEADER_LEN + RPC_HDR_REQ_LEN + RPC_MAX_SIGN_SIZE) {
1626 /* Server is screwed up ! */
1627 return NT_STATUS_INVALID_PARAMETER;
1628 }
1629
1630 if (!prs_init(&outgoing_pdu, cli->max_xmit_frag, prs_get_mem_context(in_data), MARSHALL))
1631 return NT_STATUS_NO_MEMORY;
1632
1633 while (1) {
1634 RPC_HDR hdr;
1635 RPC_HDR_REQ hdr_req;
1636 uint16 auth_len = 0;
1637 uint16 frag_len = 0;
1638 uint8 flags = 0;
1639 uint32 ss_padding = 0;
1640
1641 data_sent_thistime = calculate_data_len_tosend(cli, data_left,
1642 &frag_len, &auth_len, &ss_padding);
1643
1644 if (current_data_offset == 0) {
1645 flags = RPC_FLG_FIRST;
1646 }
1647
1648 if (data_sent_thistime == data_left) {
1649 flags |= RPC_FLG_LAST;
1650 }
1651
1652 /* Create and marshall the header and request header. */
1653 init_rpc_hdr(&hdr, RPC_REQUEST, flags, call_id, frag_len, auth_len);
1654
1655 if(!smb_io_rpc_hdr("hdr ", &hdr, &outgoing_pdu, 0)) {
1656 prs_mem_free(&outgoing_pdu);
1657 return NT_STATUS_NO_MEMORY;
1658 }
1659
1660 /* Create the rpc request RPC_HDR_REQ */
1661 init_rpc_hdr_req(&hdr_req, alloc_hint, op_num);
1662
1663 if(!smb_io_rpc_hdr_req("hdr_req", &hdr_req, &outgoing_pdu, 0)) {
1664 prs_mem_free(&outgoing_pdu);
1665 return NT_STATUS_NO_MEMORY;
1666 }
1667
1668 /* Copy in the data, plus any ss padding. */
1669 if (!prs_append_some_prs_data(&outgoing_pdu, in_data, current_data_offset, data_sent_thistime)) {
1670 prs_mem_free(&outgoing_pdu);
1671 return NT_STATUS_NO_MEMORY;
1672 }
1673
1674 /* Copy the sign/seal padding data. */
1675 if (ss_padding) {
1676 if (!prs_copy_data_in(&outgoing_pdu, pad, ss_padding)) {
1677 prs_mem_free(&outgoing_pdu);
1678 return NT_STATUS_NO_MEMORY;
1679 }
1680 }
1681
1682 /* Generate any auth sign/seal and add the auth footer. */
1683 if (auth_len) {
1684 switch (cli->auth->auth_type) {
1685 case PIPE_AUTH_TYPE_NONE:
1686 break;
1687 case PIPE_AUTH_TYPE_NTLMSSP:
1688 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
1689 ret = add_ntlmssp_auth_footer(cli, &hdr, ss_padding, &outgoing_pdu);
1690 if (!NT_STATUS_IS_OK(ret)) {
1691 prs_mem_free(&outgoing_pdu);
1692 return ret;
1693 }
1694 break;
1695 case PIPE_AUTH_TYPE_SCHANNEL:
1696 ret = add_schannel_auth_footer(cli, &hdr, ss_padding, &outgoing_pdu);
1697 if (!NT_STATUS_IS_OK(ret)) {
1698 prs_mem_free(&outgoing_pdu);
1699 return ret;
1700 }
1701 break;
1702 default:
1703 smb_panic("bad auth type");
1704 break; /* notreached */
1705 }
1706 }
1707
1708 /* Actually send the packet. */
1709 if (flags & RPC_FLG_LAST) {
1710 /* Last packet - send the data, get the reply and return. */
1711 ret = rpc_api_pipe(cli, &outgoing_pdu, out_data, RPC_RESPONSE);
1712 prs_mem_free(&outgoing_pdu);
1713
1714 if ((DEBUGLEVEL >= 50)
1715 && (cli->transport_type == NCACN_NP)) {
1716 char *dump_name = NULL;
1717 /* Also capture received data */
1718 if (asprintf(&dump_name, "%s/reply_%s_%d",
1719 get_dyn_LOGFILEBASE(),
1720 cli->trans.np.pipe_name, op_num) > 0) {
1721 prs_dump(dump_name, op_num, out_data);
1722 SAFE_FREE(dump_name);
1723 }
1724 }
1725
1726 return ret;
1727 } else {
1728 /* More packets to come - write and continue. */
1729 ssize_t num_written;
1730
1731 switch (cli->transport_type) {
1732 case NCACN_NP:
1733 num_written = cli_write(cli->trans.np.cli,
1734 cli->trans.np.fnum,
1735 8, /* 8 means message mode. */
1736 prs_data_p(&outgoing_pdu),
1737 (off_t)0,
1738 (size_t)hdr.frag_len);
1739
1740 if (num_written != hdr.frag_len) {
1741 prs_mem_free(&outgoing_pdu);
1742 return cli_get_nt_error(
1743 cli->trans.np.cli);
1744 }
1745 break;
1746 case NCACN_IP_TCP:
1747 case NCACN_UNIX_STREAM:
1748 num_written = write_data(
1749 cli->trans.sock.fd,
1750 prs_data_p(&outgoing_pdu),
1751 (size_t)hdr.frag_len);
1752 if (num_written != hdr.frag_len) {
1753 NTSTATUS status;
1754 status = map_nt_error_from_unix(errno);
1755 prs_mem_free(&outgoing_pdu);
1756 return status;
1757 }
1758 break;
1759 default:
1760 DEBUG(0, ("unknown transport type %d\n",
1761 cli->transport_type));
1762 return NT_STATUS_INTERNAL_ERROR;
1763 }
1764 }
1765
1766 current_data_offset += data_sent_thistime;
1767 data_left -= data_sent_thistime;
1768
1769 /* Reset the marshalling position back to zero. */
1770 if (!prs_set_offset(&outgoing_pdu, 0)) {
1771 prs_mem_free(&outgoing_pdu);
1772 return NT_STATUS_NO_MEMORY;
1773 }
1774 }
1775 }
1776 #if 0
1777 /****************************************************************************
1778 Set the handle state.
1779 ****************************************************************************/
1780
1781 static bool rpc_pipe_set_hnd_state(struct rpc_pipe_client *cli,
1782 const char *pipe_name, uint16 device_state)
1783 {
1784 bool state_set = False;
1785 char param[2];
1786 uint16 setup[2]; /* only need 2 uint16 setup parameters */
1787 char *rparam = NULL;
1788 char *rdata = NULL;
1789 uint32 rparam_len, rdata_len;
1790
1791 if (pipe_name == NULL)
1792 return False;
1793
1794 DEBUG(5,("Set Handle state Pipe[%x]: %s - device state:%x\n",
1795 cli->fnum, pipe_name, device_state));
1796
1797 /* create parameters: device state */
1798 SSVAL(param, 0, device_state);
1799
1800 /* create setup parameters. */
1801 setup[0] = 0x0001;
1802 setup[1] = cli->fnum; /* pipe file handle. got this from an SMBOpenX. */
1803
1804 /* send the data on \PIPE\ */
1805 if (cli_api_pipe(cli->cli, "\\PIPE\\",
1806 setup, 2, 0, /* setup, length, max */
1807 param, 2, 0, /* param, length, max */
1808 NULL, 0, 1024, /* data, length, max */
1809 &rparam, &rparam_len, /* return param, length */
1810 &rdata, &rdata_len)) /* return data, length */
1811 {
1812 DEBUG(5, ("Set Handle state: return OK\n"));
1813 state_set = True;
1814 }
1815
1816 SAFE_FREE(rparam);
1817 SAFE_FREE(rdata);
1818
1819 return state_set;
1820 }
1821 #endif
1822
1823 /****************************************************************************
1824 Check the rpc bind acknowledge response.
1825 ****************************************************************************/
1826
1827 static bool check_bind_response(RPC_HDR_BA *hdr_ba, const RPC_IFACE *transfer)
1828 {
1829 if ( hdr_ba->addr.len == 0) {
1830 DEBUG(4,("Ignoring length check -- ASU bug (server didn't fill in the pipe name correctly)"));
1831 }
1832
1833 /* check the transfer syntax */
1834 if ((hdr_ba->transfer.if_version != transfer->if_version) ||
1835 (memcmp(&hdr_ba->transfer.uuid, &transfer->uuid, sizeof(transfer->uuid)) !=0)) {
1836 DEBUG(2,("bind_rpc_pipe: transfer syntax differs\n"));
1837 return False;
1838 }
1839
1840 if (hdr_ba->res.num_results != 0x1 || hdr_ba->res.result != 0) {
1841 DEBUG(2,("bind_rpc_pipe: bind denied results: %d reason: %x\n",
1842 hdr_ba->res.num_results, hdr_ba->res.reason));
1843 }
1844
1845 DEBUG(5,("check_bind_response: accepted!\n"));
1846 return True;
1847 }
1848
1849 /*******************************************************************
1850 Creates a DCE/RPC bind authentication response.
1851 This is the packet that is sent back to the server once we
1852 have received a BIND-ACK, to finish the third leg of
1853 the authentication handshake.
1854 ********************************************************************/
1855
1856 static NTSTATUS create_rpc_bind_auth3(struct rpc_pipe_client *cli,
1857 uint32 rpc_call_id,
1858 enum pipe_auth_type auth_type,
1859 enum pipe_auth_level auth_level,
1860 DATA_BLOB *pauth_blob,
1861 prs_struct *rpc_out)
1862 {
1863 RPC_HDR hdr;
1864 RPC_HDR_AUTH hdr_auth;
1865 uint32 pad = 0;
1866
1867 /* Create the request RPC_HDR */
1868 init_rpc_hdr(&hdr, RPC_AUTH3, RPC_FLG_FIRST|RPC_FLG_LAST, rpc_call_id,
1869 RPC_HEADER_LEN + 4 /* pad */ + RPC_HDR_AUTH_LEN + pauth_blob->length,
1870 pauth_blob->length );
1871
1872 /* Marshall it. */
1873 if(!smb_io_rpc_hdr("hdr", &hdr, rpc_out, 0)) {
1874 DEBUG(0,("create_rpc_bind_auth3: failed to marshall RPC_HDR.\n"));
1875 return NT_STATUS_NO_MEMORY;
1876 }
1877
1878 /*
1879 I'm puzzled about this - seems to violate the DCE RPC auth rules,
1880 about padding - shouldn't this pad to length 8 ? JRA.
1881 */
1882
1883 /* 4 bytes padding. */
1884 if (!prs_uint32("pad", rpc_out, 0, &pad)) {
1885 DEBUG(0,("create_rpc_bind_auth3: failed to marshall 4 byte pad.\n"));
1886 return NT_STATUS_NO_MEMORY;
1887 }
1888
1889 /* Create the request RPC_HDR_AUTHA */
1890 init_rpc_hdr_auth(&hdr_auth,
1891 map_pipe_auth_type_to_rpc_auth_type(auth_type),
1892 auth_level, 0, 1);
1893
1894 if(!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, rpc_out, 0)) {
1895 DEBUG(0,("create_rpc_bind_auth3: failed to marshall RPC_HDR_AUTHA.\n"));
1896 return NT_STATUS_NO_MEMORY;
1897 }
1898
1899 /*
1900 * Append the auth data to the outgoing buffer.
1901 */
1902
1903 if(!prs_copy_data_in(rpc_out, (char *)pauth_blob->data, pauth_blob->length)) {
1904 DEBUG(0,("create_rpc_bind_auth3: failed to marshall auth blob.\n"));
1905 return NT_STATUS_NO_MEMORY;
1906 }
1907
1908 return NT_STATUS_OK;
1909 }
1910
1911 /****************************************************************************
1912 Create and send the third packet in an RPC auth.
1913 ****************************************************************************/
1914
1915 static NTSTATUS rpc_finish_auth3_bind(struct rpc_pipe_client *cli,
1916 RPC_HDR *phdr,
1917 prs_struct *rbuf,
1918 uint32 rpc_call_id,
1919 enum pipe_auth_type auth_type,
1920 enum pipe_auth_level auth_level)
1921 {
1922 DATA_BLOB server_response = data_blob_null;
1923 DATA_BLOB client_reply = data_blob_null;
1924 RPC_HDR_AUTH hdr_auth;
1925 NTSTATUS nt_status;
1926 prs_struct rpc_out;
1927 ssize_t ret;
1928
1929 if (!phdr->auth_len || (phdr->frag_len < phdr->auth_len + RPC_HDR_AUTH_LEN)) {
1930 return NT_STATUS_INVALID_PARAMETER;
1931 }
1932
1933 /* Process the returned NTLMSSP blob first. */
1934 if (!prs_set_offset(rbuf, phdr->frag_len - phdr->auth_len - RPC_HDR_AUTH_LEN)) {
1935 return NT_STATUS_INVALID_PARAMETER;
1936 }
1937
1938 if(!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, rbuf, 0)) {
1939 return NT_STATUS_INVALID_PARAMETER;
1940 }
1941
1942 /* TODO - check auth_type/auth_level match. */
1943
1944 server_response = data_blob(NULL, phdr->auth_len);
1945 prs_copy_data_out((char *)server_response.data, rbuf, phdr->auth_len);
1946
1947 nt_status = ntlmssp_update(cli->auth->a_u.ntlmssp_state,
1948 server_response,
1949 &client_reply);
1950
1951 if (!NT_STATUS_IS_OK(nt_status)) {
1952 DEBUG(0,("rpc_finish_auth3_bind: NTLMSSP update using server blob failed.\n"));
1953 data_blob_free(&server_response);
1954 return nt_status;
1955 }
1956
1957 prs_init_empty(&rpc_out, prs_get_mem_context(rbuf), MARSHALL);
1958
1959 nt_status = create_rpc_bind_auth3(cli, rpc_call_id,
1960 auth_type, auth_level,
1961 &client_reply, &rpc_out);
1962
1963 if (!NT_STATUS_IS_OK(nt_status)) {
1964 prs_mem_free(&rpc_out);
1965 data_blob_free(&client_reply);
1966 data_blob_free(&server_response);
1967 return nt_status;
1968 }
1969
1970 switch (cli->transport_type) {
1971 case NCACN_NP:
1972 /* 8 here is named pipe message mode. */
1973 ret = cli_write(cli->trans.np.cli, cli->trans.np.fnum,
1974 0x8, prs_data_p(&rpc_out), 0,
1975 (size_t)prs_offset(&rpc_out));
1976 break;
1977
1978 if (ret != (ssize_t)prs_offset(&rpc_out)) {
1979 nt_status = cli_get_nt_error(cli->trans.np.cli);
1980 }
1981 case NCACN_IP_TCP:
1982 case NCACN_UNIX_STREAM:
1983 ret = write_data(cli->trans.sock.fd, prs_data_p(&rpc_out),
1984 (size_t)prs_offset(&rpc_out));
1985 if (ret != (ssize_t)prs_offset(&rpc_out)) {
1986 nt_status = map_nt_error_from_unix(errno);
1987 }
1988 break;
1989 default:
1990 DEBUG(0, ("unknown transport type %d\n", cli->transport_type));
1991 return NT_STATUS_INTERNAL_ERROR;
1992 }
1993
1994 if (ret != (ssize_t)prs_offset(&rpc_out)) {
1995 DEBUG(0,("rpc_send_auth_auth3: write failed. Return was %s\n",
1996 nt_errstr(nt_status)));
1997 prs_mem_free(&rpc_out);
1998 data_blob_free(&client_reply);
1999 data_blob_free(&server_response);
2000 return nt_status;
2001 }
2002
2003 DEBUG(5,("rpc_send_auth_auth3: %s sent auth3 response ok.\n",
2004 rpccli_pipe_txt(debug_ctx(), cli)));
2005
2006 prs_mem_free(&rpc_out);
2007 data_blob_free(&client_reply);
2008 data_blob_free(&server_response);
2009 return NT_STATUS_OK;
2010 }
2011
2012 /*******************************************************************
2013 Creates a DCE/RPC bind alter context authentication request which
2014 may contain a spnego auth blobl
2015 ********************************************************************/
2016
2017 static NTSTATUS create_rpc_alter_context(uint32 rpc_call_id,
2018 const RPC_IFACE *abstract,
2019 const RPC_IFACE *transfer,
2020 enum pipe_auth_level auth_level,
2021 const DATA_BLOB *pauth_blob, /* spnego auth blob already created. */
2022 prs_struct *rpc_out)
2023 {
2024 RPC_HDR_AUTH hdr_auth;
2025 prs_struct auth_info;
2026 NTSTATUS ret = NT_STATUS_OK;
2027
2028 ZERO_STRUCT(hdr_auth);
2029 if (!prs_init(&auth_info, RPC_HDR_AUTH_LEN, prs_get_mem_context(rpc_out), MARSHALL))
2030 return NT_STATUS_NO_MEMORY;
2031
2032 /* We may change the pad length before marshalling. */
2033 init_rpc_hdr_auth(&hdr_auth, RPC_SPNEGO_AUTH_TYPE, (int)auth_level, 0, 1);
2034
2035 if (pauth_blob->length) {
2036 if (!prs_copy_data_in(&auth_info, (const char *)pauth_blob->data, pauth_blob->length)) {
2037 prs_mem_free(&auth_info);
2038 return NT_STATUS_NO_MEMORY;
2039 }
2040 }
2041
2042 ret = create_bind_or_alt_ctx_internal(RPC_ALTCONT,
2043 rpc_out,
2044 rpc_call_id,
2045 abstract,
2046 transfer,
2047 &hdr_auth,
2048 &auth_info);
2049 prs_mem_free(&auth_info);
2050 return ret;
2051 }
2052
2053 /*******************************************************************
2054 Third leg of the SPNEGO bind mechanism - sends alter context PDU
2055 and gets a response.
2056 ********************************************************************/
2057
2058 static NTSTATUS rpc_finish_spnego_ntlmssp_bind(struct rpc_pipe_client *cli,
2059 RPC_HDR *phdr,
2060 prs_struct *rbuf,
2061 uint32 rpc_call_id,
2062 const RPC_IFACE *abstract,
2063 const RPC_IFACE *transfer,
2064 enum pipe_auth_type auth_type,
2065 enum pipe_auth_level auth_level)
2066 {
2067 DATA_BLOB server_spnego_response = data_blob_null;
2068 DATA_BLOB server_ntlm_response = data_blob_null;
2069 DATA_BLOB client_reply = data_blob_null;
2070 DATA_BLOB tmp_blob = data_blob_null;
2071 RPC_HDR_AUTH hdr_auth;
2072 NTSTATUS nt_status;
2073 prs_struct rpc_out;
2074
2075 if (!phdr->auth_len || (phdr->frag_len < phdr->auth_len + RPC_HDR_AUTH_LEN)) {
2076 return NT_STATUS_INVALID_PARAMETER;
2077 }
2078
2079 /* Process the returned NTLMSSP blob first. */
2080 if (!prs_set_offset(rbuf, phdr->frag_len - phdr->auth_len - RPC_HDR_AUTH_LEN)) {
2081 return NT_STATUS_INVALID_PARAMETER;
2082 }
2083
2084 if(!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, rbuf, 0)) {
2085 return NT_STATUS_INVALID_PARAMETER;
2086 }
2087
2088 server_spnego_response = data_blob(NULL, phdr->auth_len);
2089 prs_copy_data_out((char *)server_spnego_response.data, rbuf, phdr->auth_len);
2090
2091 /* The server might give us back two challenges - tmp_blob is for the second. */
2092 if (!spnego_parse_challenge(server_spnego_response, &server_ntlm_response, &tmp_blob)) {
2093 data_blob_free(&server_spnego_response);
2094 data_blob_free(&server_ntlm_response);
2095 data_blob_free(&tmp_blob);
2096 return NT_STATUS_INVALID_PARAMETER;
2097 }
2098
2099 /* We're finished with the server spnego response and the tmp_blob. */
2100 data_blob_free(&server_spnego_response);
2101 data_blob_free(&tmp_blob);
2102
2103 nt_status = ntlmssp_update(cli->auth->a_u.ntlmssp_state,
2104 server_ntlm_response,
2105 &client_reply);
2106
2107 /* Finished with the server_ntlm response */
2108 data_blob_free(&server_ntlm_response);
2109
2110 if (!NT_STATUS_IS_OK(nt_status)) {
2111 DEBUG(0,("rpc_finish_spnego_ntlmssp_bind: NTLMSSP update using server blob failed.\n"));
2112 data_blob_free(&client_reply);
2113 return nt_status;
2114 }
2115
2116 /* SPNEGO wrap the client reply. */
2117 tmp_blob = spnego_gen_auth(client_reply);
2118 data_blob_free(&client_reply);
2119 client_reply = tmp_blob;
2120 tmp_blob = data_blob_null; /* Ensure it's safe to free this just in case. */
2121
2122 /* Now prepare the alter context pdu. */
2123 prs_init_empty(&rpc_out, prs_get_mem_context(rbuf), MARSHALL);
2124
2125 nt_status = create_rpc_alter_context(rpc_call_id,
2126 abstract,
2127 transfer,
2128 auth_level,
2129 &client_reply,
2130 &rpc_out);
2131
2132 data_blob_free(&client_reply);
2133
2134 if (!NT_STATUS_IS_OK(nt_status)) {
2135 prs_mem_free(&rpc_out);
2136 return nt_status;
2137 }
2138
2139 /* Initialize the returning data struct. */
2140 prs_mem_free(rbuf);
2141 prs_init_empty(rbuf, talloc_tos(), UNMARSHALL);
2142
2143 nt_status = rpc_api_pipe(cli, &rpc_out, rbuf, RPC_ALTCONTRESP);
2144 if (!NT_STATUS_IS_OK(nt_status)) {
2145 prs_mem_free(&rpc_out);
2146 return nt_status;
2147 }
2148
2149 prs_mem_free(&rpc_out);
2150
2151 /* Get the auth blob from the reply. */
2152 if(!smb_io_rpc_hdr("rpc_hdr ", phdr, rbuf, 0)) {
2153 DEBUG(0,("rpc_finish_spnego_ntlmssp_bind: Failed to unmarshall RPC_HDR.\n"));
2154 return NT_STATUS_BUFFER_TOO_SMALL;
2155 }
2156
2157 if (!prs_set_offset(rbuf, phdr->frag_len - phdr->auth_len - RPC_HDR_AUTH_LEN)) {
2158 return NT_STATUS_INVALID_PARAMETER;
2159 }
2160
2161 if(!smb_io_rpc_hdr_auth("hdr_auth", &hdr_auth, rbuf, 0)) {
2162 return NT_STATUS_INVALID_PARAMETER;
2163 }
2164
2165 server_spnego_response = data_blob(NULL, phdr->auth_len);
2166 prs_copy_data_out((char *)server_spnego_response.data, rbuf, phdr->auth_len);
2167
2168 /* Check we got a valid auth response. */
2169 if (!spnego_parse_auth_response(server_spnego_response, NT_STATUS_OK, OID_NTLMSSP, &tmp_blob)) {
2170 data_blob_free(&server_spnego_response);
2171 data_blob_free(&tmp_blob);
2172 return NT_STATUS_INVALID_PARAMETER;
2173 }
2174
2175 data_blob_free(&server_spnego_response);
2176 data_blob_free(&tmp_blob);
2177
2178 DEBUG(5,("rpc_finish_spnego_ntlmssp_bind: alter context request to "
2179 "%s.\n", rpccli_pipe_txt(debug_ctx(), cli)));
2180
2181 return NT_STATUS_OK;
2182 }
2183
2184 /****************************************************************************
2185 Do an rpc bind.
2186 ****************************************************************************/
2187
2188 NTSTATUS rpc_pipe_bind(struct rpc_pipe_client *cli,
2189 struct cli_pipe_auth_data *auth)
2190 {
2191 RPC_HDR hdr;
2192 RPC_HDR_BA hdr_ba;
2193 prs_struct rpc_out;
2194 prs_struct rbuf;
2195 uint32 rpc_call_id;
2196 NTSTATUS status;
2197
2198 DEBUG(5,("Bind RPC Pipe: %s auth_type %u, auth_level %u\n",
2199 rpccli_pipe_txt(debug_ctx(), cli),
2200 (unsigned int)auth->auth_type,
2201 (unsigned int)auth->auth_level ));
2202
2203 cli->auth = talloc_move(cli, &auth);
2204
2205 prs_init_empty(&rpc_out, talloc_tos(), MARSHALL);
2206
2207 rpc_call_id = get_rpc_call_id();
2208
2209 /* Marshall the outgoing data. */
2210 status = create_rpc_bind_req(cli, &rpc_out, rpc_call_id,
2211 &cli->abstract_syntax,
2212 &cli->transfer_syntax,
2213 cli->auth->auth_type,
2214 cli->auth->auth_level);
2215
2216 if (!NT_STATUS_IS_OK(status)) {
2217 prs_mem_free(&rpc_out);
2218 return status;
2219 }
2220
2221 /* Initialize the incoming data struct. */
2222 prs_init_empty(&rbuf, talloc_tos(), UNMARSHALL);
2223
2224 /* send data on \PIPE\. receive a response */
2225 status = rpc_api_pipe(cli, &rpc_out, &rbuf, RPC_BINDACK);
2226 if (!NT_STATUS_IS_OK(status)) {
2227 prs_mem_free(&rpc_out);
2228 return status;
2229 }
2230
2231 prs_mem_free(&rpc_out);
2232
2233 DEBUG(3,("rpc_pipe_bind: %s bind request returned ok.\n",
2234 rpccli_pipe_txt(debug_ctx(), cli)));
2235
2236 /* Unmarshall the RPC header */
2237 if(!smb_io_rpc_hdr("hdr" , &hdr, &rbuf, 0)) {
2238 DEBUG(0,("rpc_pipe_bind: failed to unmarshall RPC_HDR.\n"));
2239 prs_mem_free(&rbuf);
2240 return NT_STATUS_BUFFER_TOO_SMALL;
2241 }
2242
2243 if(!smb_io_rpc_hdr_ba("", &hdr_ba, &rbuf, 0)) {
2244 DEBUG(0,("rpc_pipe_bind: Failed to unmarshall RPC_HDR_BA.\n"));
2245 prs_mem_free(&rbuf);
2246 return NT_STATUS_BUFFER_TOO_SMALL;
2247 }
2248
2249 if(!check_bind_response(&hdr_ba, &cli->transfer_syntax)) {
2250 DEBUG(2,("rpc_pipe_bind: check_bind_response failed.\n"));
2251 prs_mem_free(&rbuf);
2252 return NT_STATUS_BUFFER_TOO_SMALL;
2253 }
2254
2255 cli->max_xmit_frag = hdr_ba.bba.max_tsize;
2256 cli->max_recv_frag = hdr_ba.bba.max_rsize;
2257
2258 /* For authenticated binds we may need to do 3 or 4 leg binds. */
2259 switch(cli->auth->auth_type) {
2260
2261 case PIPE_AUTH_TYPE_NONE:
2262 case PIPE_AUTH_TYPE_SCHANNEL:
2263 /* Bind complete. */
2264 break;
2265
2266 case PIPE_AUTH_TYPE_NTLMSSP:
2267 /* Need to send AUTH3 packet - no reply. */
2268 status = rpc_finish_auth3_bind(
2269 cli, &hdr, &rbuf, rpc_call_id,
2270 cli->auth->auth_type,
2271 cli->auth->auth_level);
2272 if (!NT_STATUS_IS_OK(status)) {
2273 prs_mem_free(&rbuf);
2274 return status;
2275 }
2276 break;
2277
2278 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
2279 /* Need to send alter context request and reply. */
2280 status = rpc_finish_spnego_ntlmssp_bind(
2281 cli, &hdr, &rbuf, rpc_call_id,
2282 &cli->abstract_syntax, &cli->transfer_syntax,
2283 cli->auth->auth_type, cli->auth->auth_level);
2284 if (!NT_STATUS_IS_OK(status)) {
2285 prs_mem_free(&rbuf);
2286 return status;
2287 }
2288 break;
2289
2290 case PIPE_AUTH_TYPE_KRB5:
2291 /* */
2292
2293 default:
2294 DEBUG(0,("cli_finish_bind_auth: unknown auth type "
2295 "%u\n", (unsigned int)cli->auth->auth_type));
2296 prs_mem_free(&rbuf);
2297 return NT_STATUS_INVALID_INFO_CLASS;
2298 }
2299
2300 /* For NTLMSSP ensure the server gave us the auth_level we wanted. */
2301 if (cli->auth->auth_type == PIPE_AUTH_TYPE_NTLMSSP
2302 || cli->auth->auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP) {
2303 if (cli->auth->auth_level == PIPE_AUTH_LEVEL_INTEGRITY) {
2304 if (!(cli->auth->a_u.ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN)) {
2305 DEBUG(0,("cli_finish_bind_auth: requested NTLMSSSP signing and server refused.\n"));
2306 prs_mem_free(&rbuf);
2307 return NT_STATUS_INVALID_PARAMETER;
2308 }
2309 }
2310 if (cli->auth->auth_level == PIPE_AUTH_LEVEL_INTEGRITY) {
2311 if (!(cli->auth->a_u.ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL)) {
2312 DEBUG(0,("cli_finish_bind_auth: requested NTLMSSSP sealing and server refused.\n"));
2313 prs_mem_free(&rbuf);
2314 return NT_STATUS_INVALID_PARAMETER;
2315 }
2316 }
2317 }
2318
2319 prs_mem_free(&rbuf);
2320 return NT_STATUS_OK;
2321 }
2322
2323 unsigned int rpccli_set_timeout(struct rpc_pipe_client *cli,
2324 unsigned int timeout)
2325 {
2326 return cli_set_timeout(cli->trans.np.cli, timeout);
2327 }
2328
2329 bool rpccli_get_pwd_hash(struct rpc_pipe_client *cli, uint8_t nt_hash[16])
2330 {
2331 if ((cli->auth->auth_type == PIPE_AUTH_TYPE_NTLMSSP)
2332 || (cli->auth->auth_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP)) {
2333 memcpy(nt_hash, cli->auth->a_u.ntlmssp_state->nt_hash, 16);
2334 return true;
2335 }
2336
2337 if (cli->transport_type == NCACN_NP) {
2338 E_md4hash(cli->trans.np.cli->pwd.password, nt_hash);
2339 return true;
2340 }
2341
2342 return false;
2343 }
2344
2345 struct cli_state *rpc_pipe_np_smb_conn(struct rpc_pipe_client *p)
2346 {
2347 if (p->transport_type == NCACN_NP) {
2348 return p->trans.np.cli;
2349 }
2350 return NULL;
2351 }
2352
2353 static int rpc_pipe_destructor(struct rpc_pipe_client *p)
2354 {
2355 if (p->transport_type == NCACN_NP) {
2356 bool ret;
2357 ret = cli_close(p->trans.np.cli, p->trans.np.fnum);
2358 if (!ret) {
2359 DEBUG(1, ("rpc_pipe_destructor: cli_close failed on "
2360 "pipe %s. Error was %s\n",
2361 rpccli_pipe_txt(debug_ctx(), p),
2362 cli_errstr(p->trans.np.cli)));
2363 }
2364
2365 DEBUG(10, ("rpc_pipe_destructor: closed %s\n",
2366 rpccli_pipe_txt(debug_ctx(), p)));
2367
2368 DLIST_REMOVE(p->trans.np.cli->pipe_list, p);
2369 return ret ? -1 : 0;
2370 }
2371
2372 return -1;
2373 }
2374
2375 NTSTATUS rpccli_anon_bind_data(TALLOC_CTX *mem_ctx,
2376 struct cli_pipe_auth_data **presult)
2377 {
2378 struct cli_pipe_auth_data *result;
2379
2380 result = talloc(mem_ctx, struct cli_pipe_auth_data);
2381 if (result == NULL) {
2382 return NT_STATUS_NO_MEMORY;
2383 }
2384
2385 result->auth_type = PIPE_AUTH_TYPE_NONE;
2386 result->auth_level = PIPE_AUTH_LEVEL_NONE;
2387
2388 result->user_name = talloc_strdup(result, "");
2389 result->domain = talloc_strdup(result, "");
2390 if ((result->user_name == NULL) || (result->domain == NULL)) {
2391 TALLOC_FREE(result);
2392 return NT_STATUS_NO_MEMORY;
2393 }
2394
2395 *presult = result;
2396 return NT_STATUS_OK;
2397 }
2398
2399 static int cli_auth_ntlmssp_data_destructor(struct cli_pipe_auth_data *auth)
2400 {
2401 ntlmssp_end(&auth->a_u.ntlmssp_state);
2402 return 0;
2403 }
2404
2405 NTSTATUS rpccli_ntlmssp_bind_data(TALLOC_CTX *mem_ctx,
2406 enum pipe_auth_type auth_type,
2407 enum pipe_auth_level auth_level,
2408 const char *domain,
2409 const char *username,
2410 const char *password,
2411 struct cli_pipe_auth_data **presult)
2412 {
2413 struct cli_pipe_auth_data *result;
2414 NTSTATUS status;
2415
2416 result = talloc(mem_ctx, struct cli_pipe_auth_data);
2417 if (result == NULL) {
2418 return NT_STATUS_NO_MEMORY;
2419 }
2420
2421 result->auth_type = auth_type;
2422 result->auth_level = auth_level;
2423
2424 result->user_name = talloc_strdup(result, username);
2425 result->domain = talloc_strdup(result, domain);
2426 if ((result->user_name == NULL) || (result->domain == NULL)) {
2427 status = NT_STATUS_NO_MEMORY;
2428 goto fail;
2429 }
2430
2431 status = ntlmssp_client_start(&result->a_u.ntlmssp_state);
2432 if (!NT_STATUS_IS_OK(status)) {
2433 goto fail;
2434 }
2435
2436 talloc_set_destructor(result, cli_auth_ntlmssp_data_destructor);
2437
2438 status = ntlmssp_set_username(result->a_u.ntlmssp_state, username);
2439 if (!NT_STATUS_IS_OK(status)) {
2440 goto fail;
2441 }
2442
2443 status = ntlmssp_set_domain(result->a_u.ntlmssp_state, domain);
2444 if (!NT_STATUS_IS_OK(status)) {
2445 goto fail;
2446 }
2447
2448 status = ntlmssp_set_password(result->a_u.ntlmssp_state, password);
2449 if (!NT_STATUS_IS_OK(status)) {
2450 goto fail;
2451 }
2452
2453 /*
2454 * Turn off sign+seal to allow selected auth level to turn it back on.
2455 */
2456 result->a_u.ntlmssp_state->neg_flags &=
2457 ~(NTLMSSP_NEGOTIATE_SIGN | NTLMSSP_NEGOTIATE_SEAL);
2458
2459 if (auth_level == PIPE_AUTH_LEVEL_INTEGRITY) {
2460 result->a_u.ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
2461 } else if (auth_level == PIPE_AUTH_LEVEL_PRIVACY) {
2462 result->a_u.ntlmssp_state->neg_flags
2463 |= NTLMSSP_NEGOTIATE_SEAL | NTLMSSP_NEGOTIATE_SIGN;
2464 }
2465
2466 *presult = result;
2467 return NT_STATUS_OK;
2468
2469 fail:
2470 TALLOC_FREE(result);
2471 return status;
2472 }
2473
2474 NTSTATUS rpccli_schannel_bind_data(TALLOC_CTX *mem_ctx, const char *domain,
2475 enum pipe_auth_level auth_level,
2476 const uint8_t sess_key[16],
2477 struct cli_pipe_auth_data **presult)
2478 {
2479 struct cli_pipe_auth_data *result;
2480
2481 result = talloc(mem_ctx, struct cli_pipe_auth_data);
2482 if (result == NULL) {
2483 return NT_STATUS_NO_MEMORY;
2484 }
2485
2486 result->auth_type = PIPE_AUTH_TYPE_SCHANNEL;
2487 result->auth_level = auth_level;
2488
2489 result->user_name = talloc_strdup(result, "");
2490 result->domain = talloc_strdup(result, domain);
2491 if ((result->user_name == NULL) || (result->domain == NULL)) {
2492 goto fail;
2493 }
2494
2495 result->a_u.schannel_auth = talloc(result,
2496 struct schannel_auth_struct);
2497 if (result->a_u.schannel_auth == NULL) {
2498 goto fail;
2499 }
2500
2501 memcpy(result->a_u.schannel_auth->sess_key, sess_key,
2502 sizeof(result->a_u.schannel_auth->sess_key));
2503 result->a_u.schannel_auth->seq_num = 0;
2504
2505 *presult = result;
2506 return NT_STATUS_OK;
2507
2508 fail:
2509 TALLOC_FREE(result);
2510 return NT_STATUS_NO_MEMORY;
2511 }
2512
2513 #ifdef HAVE_KRB5
2514 static int cli_auth_kerberos_data_destructor(struct kerberos_auth_struct *auth)
2515 {
2516 data_blob_free(&auth->session_key);
2517 return 0;
2518 }
2519 #endif
2520
2521 NTSTATUS rpccli_kerberos_bind_data(TALLOC_CTX *mem_ctx,
2522 enum pipe_auth_level auth_level,
2523 const char *service_princ,
2524 const char *username,
2525 const char *password,
2526 struct cli_pipe_auth_data **presult)
2527 {
2528 #ifdef HAVE_KRB5
2529 struct cli_pipe_auth_data *result;
2530
2531 if ((username != NULL) && (password != NULL)) {
2532 int ret = kerberos_kinit_password(username, password, 0, NULL);
2533 if (ret != 0) {
2534 return NT_STATUS_ACCESS_DENIED;
2535 }
2536 }
2537
2538 result = talloc(mem_ctx, struct cli_pipe_auth_data);
2539 if (result == NULL) {
2540 return NT_STATUS_NO_MEMORY;
2541 }
2542
2543 result->auth_type = PIPE_AUTH_TYPE_KRB5;
2544 result->auth_level = auth_level;
2545
2546 /*
2547 * Username / domain need fixing!
2548 */
2549 result->user_name = talloc_strdup(result, "");
2550 result->domain = talloc_strdup(result, "");
2551 if ((result->user_name == NULL) || (result->domain == NULL)) {
2552 goto fail;
2553 }
2554
2555 result->a_u.kerberos_auth = TALLOC_ZERO_P(
2556 result, struct kerberos_auth_struct);
2557 if (result->a_u.kerberos_auth == NULL) {
2558 goto fail;
2559 }
2560 talloc_set_destructor(result->a_u.kerberos_auth,
2561 cli_auth_kerberos_data_destructor);
2562
2563 result->a_u.kerberos_auth->service_principal = talloc_strdup(
2564 result, service_princ);
2565 if (result->a_u.kerberos_auth->service_principal == NULL) {
2566 goto fail;
2567 }
2568
2569 *presult = result;
2570 return NT_STATUS_OK;
2571
2572 fail:
2573 TALLOC_FREE(result);
2574 return NT_STATUS_NO_MEMORY;
2575 #else
2576 return NT_STATUS_NOT_SUPPORTED;
2577 #endif
2578 }
2579
2580 static int rpc_pipe_sock_destructor(struct rpc_pipe_client *p)
2581 {
2582 close(p->trans.sock.fd);
2583 return 0;
2584 }
2585
2586 /**
2587 * Create an rpc pipe client struct, connecting to a tcp port.
2588 */
2589 static NTSTATUS rpc_pipe_open_tcp_port(TALLOC_CTX *mem_ctx, const char *host,
2590 uint16_t port,
2591 const struct ndr_syntax_id *abstract_syntax,
2592 struct rpc_pipe_client **presult)
2593 {
2594 struct rpc_pipe_client *result;
2595 struct sockaddr_storage addr;
2596 NTSTATUS status;
2597
2598 result = TALLOC_ZERO_P(mem_ctx, struct rpc_pipe_client);
2599 if (result == NULL) {
2600 return NT_STATUS_NO_MEMORY;
2601 }
2602
2603 result->transport_type = NCACN_IP_TCP;
2604
2605 result->abstract_syntax = *abstract_syntax;
2606 result->transfer_syntax = ndr_transfer_syntax;
2607
2608 result->desthost = talloc_strdup(result, host);
2609 result->srv_name_slash = talloc_asprintf_strupper_m(
2610 result, "\\\\%s", result->desthost);
2611 if ((result->desthost == NULL) || (result->srv_name_slash == NULL)) {
2612 status = NT_STATUS_NO_MEMORY;
2613 goto fail;
2614 }
2615
2616 result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
2617 result->max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
2618
2619 if (!resolve_name(host, &addr, 0)) {
2620 status = NT_STATUS_NOT_FOUND;
2621 goto fail;
2622 }
2623
2624 result->trans.sock.fd = open_socket_out(SOCK_STREAM, &addr, port, 60);
2625 if (result->trans.sock.fd == -1) {
2626 status = map_nt_error_from_unix(errno);
2627 goto fail;
2628 }
2629
2630 talloc_set_destructor(result, rpc_pipe_sock_destructor);
2631
2632 *presult = result;
2633 return NT_STATUS_OK;
2634
2635 fail:
2636 TALLOC_FREE(result);
2637 return status;
2638 }
2639
2640 /**
2641 * Determine the tcp port on which a dcerpc interface is listening
2642 * for the ncacn_ip_tcp transport via the endpoint mapper of the
2643 * target host.
2644 */
2645 static NTSTATUS rpc_pipe_get_tcp_port(const char *host,
2646 const struct ndr_syntax_id *abstract_syntax,
2647 uint16_t *pport)
2648 {
2649 NTSTATUS status;
2650 struct rpc_pipe_client *epm_pipe = NULL;
2651 struct cli_pipe_auth_data *auth = NULL;
2652 struct dcerpc_binding *map_binding = NULL;
2653 struct dcerpc_binding *res_binding = NULL;
2654 struct epm_twr_t *map_tower = NULL;
2655 struct epm_twr_t *res_towers = NULL;
2656 struct policy_handle *entry_handle = NULL;
2657 uint32_t num_towers = 0;
2658 uint32_t max_towers = 1;
2659 struct epm_twr_p_t towers;
2660 TALLOC_CTX *tmp_ctx = talloc_stackframe();
2661
2662 if (pport == NULL) {
2663 status = NT_STATUS_INVALID_PARAMETER;
2664 goto done;
2665 }
2666
2667 /* open the connection to the endpoint mapper */
2668 status = rpc_pipe_open_tcp_port(tmp_ctx, host, 135,
2669 &ndr_table_epmapper.syntax_id,
2670 &epm_pipe);
2671
2672 if (!NT_STATUS_IS_OK(status)) {
2673 goto done;
2674 }
2675
2676 status = rpccli_anon_bind_data(tmp_ctx, &auth);
2677 if (!NT_STATUS_IS_OK(status)) {
2678 goto done;
2679 }
2680
2681 status = rpc_pipe_bind(epm_pipe, auth);
2682 if (!NT_STATUS_IS_OK(status)) {
2683 goto done;
2684 }
2685
2686 /* create tower for asking the epmapper */
2687
2688 map_binding = TALLOC_ZERO_P(tmp_ctx, struct dcerpc_binding);
2689 if (map_binding == NULL) {
2690 status = NT_STATUS_NO_MEMORY;
2691 goto done;
2692 }
2693
2694 map_binding->transport = NCACN_IP_TCP;
2695 map_binding->object = *abstract_syntax;
2696 map_binding->host = host; /* needed? */
2697 map_binding->endpoint = "0"; /* correct? needed? */
2698
2699 map_tower = TALLOC_ZERO_P(tmp_ctx, struct epm_twr_t);
2700 if (map_tower == NULL) {
2701 status = NT_STATUS_NO_MEMORY;
2702 goto done;
2703 }
2704
2705 status = dcerpc_binding_build_tower(tmp_ctx, map_binding,
2706 &(map_tower->tower));
2707 if (!NT_STATUS_IS_OK(status)) {
2708 goto done;
2709 }
2710
2711 /* allocate further parameters for the epm_Map call */
2712
2713 res_towers = TALLOC_ARRAY(tmp_ctx, struct epm_twr_t, max_towers);
2714 if (res_towers == NULL) {
2715 status = NT_STATUS_NO_MEMORY;
2716 goto done;
2717 }
2718 towers.twr = res_towers;
2719
2720 entry_handle = TALLOC_ZERO_P(tmp_ctx, struct policy_handle);
2721 if (entry_handle == NULL) {
2722 status = NT_STATUS_NO_MEMORY;
2723 goto done;
2724 }
2725
2726 /* ask the endpoint mapper for the port */
2727
2728 status = rpccli_epm_Map(epm_pipe,
2729 tmp_ctx,
2730 CONST_DISCARD(struct GUID *,
2731 &(abstract_syntax->uuid)),
2732 map_tower,
2733 entry_handle,
2734 max_towers,
2735 &num_towers,
2736 &towers);
2737
2738 if (!NT_STATUS_IS_OK(status)) {
2739 goto done;
2740 }
2741
2742 if (num_towers != 1) {
2743 status = NT_STATUS_UNSUCCESSFUL;
2744 goto done;
2745 }
2746
2747 /* extract the port from the answer */
2748
2749 status = dcerpc_binding_from_tower(tmp_ctx,
2750 &(towers.twr->tower),
2751 &res_binding);
2752 if (!NT_STATUS_IS_OK(status)) {
2753 goto done;
2754 }
2755
2756 /* are further checks here necessary? */
2757 if (res_binding->transport != NCACN_IP_TCP) {
2758 status = NT_STATUS_UNSUCCESSFUL;
2759 goto done;
2760 }
2761
2762 *pport = (uint16_t)atoi(res_binding->endpoint);
2763
2764 done:
2765 TALLOC_FREE(tmp_ctx);
2766 return status;
2767 }
2768
2769 /**
2770 * Create a rpc pipe client struct, connecting to a host via tcp.
2771 * The port is determined by asking the endpoint mapper on the given
2772 * host.
2773 */
2774 NTSTATUS rpc_pipe_open_tcp(TALLOC_CTX *mem_ctx, const char *host,
2775 const struct ndr_syntax_id *abstract_syntax,
2776 struct rpc_pipe_client **presult)
2777 {
2778 NTSTATUS status;
2779 uint16_t port = 0;
2780
2781 *presult = NULL;
2782
2783 status = rpc_pipe_get_tcp_port(host, abstract_syntax, &port);
2784 if (!NT_STATUS_IS_OK(status)) {
2785 goto done;
2786 }
2787
2788 status = rpc_pipe_open_tcp_port(mem_ctx, host, port,
2789 abstract_syntax, presult);
2790
2791 done:
2792 return status;
2793 }
2794
2795 /********************************************************************
2796 Create a rpc pipe client struct, connecting to a unix domain socket
2797 ********************************************************************/
2798 NTSTATUS rpc_pipe_open_ncalrpc(TALLOC_CTX *mem_ctx, const char *socket_path,
2799 const struct ndr_syntax_id *abstract_syntax,
2800 struct rpc_pipe_client **presult)
2801 {
2802 struct rpc_pipe_client *result;
2803 struct sockaddr_un addr;
2804 NTSTATUS status;
2805
2806 result = talloc_zero(mem_ctx, struct rpc_pipe_client);
2807 if (result == NULL) {
2808 return NT_STATUS_NO_MEMORY;
2809 }
2810
2811 result->transport_type = NCACN_UNIX_STREAM;
2812
2813 result->abstract_syntax = *abstract_syntax;
2814 result->transfer_syntax = ndr_transfer_syntax;
2815
2816 result->desthost = get_myname(result);
2817 result->srv_name_slash = talloc_asprintf_strupper_m(
2818 result, "\\\\%s", result->desthost);
2819 if ((result->desthost == NULL) || (result->srv_name_slash == NULL)) {
2820 status = NT_STATUS_NO_MEMORY;
2821 goto fail;
2822 }
2823
2824 result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
2825 result->max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
2826
2827 result->trans.sock.fd = socket(AF_UNIX, SOCK_STREAM, 0);
2828 if (result->trans.sock.fd == -1) {
2829 status = map_nt_error_from_unix(errno);
2830 goto fail;
2831 }
2832
2833 talloc_set_destructor(result, rpc_pipe_sock_destructor);
2834
2835 ZERO_STRUCT(addr);
2836 addr.sun_family = AF_UNIX;
2837 strncpy(addr.sun_path, socket_path, sizeof(addr.sun_path));
2838
2839 if (sys_connect(result->trans.sock.fd,
2840 (struct sockaddr *)&addr) == -1) {
2841 DEBUG(0, ("connect(%s) failed: %s\n", socket_path,
2842 strerror(errno)));
2843 close(result->trans.sock.fd);
2844 return map_nt_error_from_unix(errno);
2845 }
2846
2847 *presult = result;
2848 return NT_STATUS_OK;
2849
2850 fail:
2851 TALLOC_FREE(result);
2852 return status;
2853 }
2854
2855
2856 /****************************************************************************
2857 Open a named pipe over SMB to a remote server.
2858 *
2859 * CAVEAT CALLER OF THIS FUNCTION:
2860 * The returned rpc_pipe_client saves a copy of the cli_state cli pointer,
2861 * so be sure that this function is called AFTER any structure (vs pointer)
2862 * assignment of the cli. In particular, libsmbclient does structure
2863 * assignments of cli, which invalidates the data in the returned
2864 * rpc_pipe_client if this function is called before the structure assignment
2865 * of cli.
2866 *
2867 ****************************************************************************/
2868
2869 static NTSTATUS rpc_pipe_open_np(struct cli_state *cli,
2870 const struct ndr_syntax_id *abstract_syntax,
2871 struct rpc_pipe_client **presult)
2872 {
2873 struct rpc_pipe_client *result;
2874 int fnum;
2875
2876 /* sanity check to protect against crashes */
2877
2878 if ( !cli ) {
2879 return NT_STATUS_INVALID_HANDLE;
2880 }
2881
2882 result = TALLOC_ZERO_P(NULL, struct rpc_pipe_client);
2883 if (result == NULL) {
2884 return NT_STATUS_NO_MEMORY;
2885 }
2886
2887 result->transport_type = NCACN_NP;
2888
2889 result->trans.np.pipe_name = cli_get_pipe_name_from_iface(
2890 result, cli, abstract_syntax);
2891 if (result->trans.np.pipe_name == NULL) {
2892 DEBUG(1, ("Could not find pipe for interface\n"));
2893 TALLOC_FREE(result);
2894 return NT_STATUS_INVALID_PARAMETER;
2895 }
2896
2897 result->trans.np.cli = cli;
2898 result->abstract_syntax = *abstract_syntax;
2899 result->transfer_syntax = ndr_transfer_syntax;
2900 result->desthost = talloc_strdup(result, cli->desthost);
2901 result->srv_name_slash = talloc_asprintf_strupper_m(
2902 result, "\\\\%s", result->desthost);
2903
2904 if ((result->desthost == NULL) || (result->srv_name_slash == NULL)) {
2905 TALLOC_FREE(result);
2906 return NT_STATUS_NO_MEMORY;
2907 }
2908
2909 fnum = cli_nt_create(cli, result->trans.np.pipe_name,
2910 DESIRED_ACCESS_PIPE);
2911 if (fnum == -1) {
2912 DEBUG(3,("rpc_pipe_open_np: cli_nt_create failed on pipe %s "
2913 "to machine %s. Error was %s\n",
2914 result->trans.np.pipe_name, cli->desthost,
2915 cli_errstr(cli)));
2916 TALLOC_FREE(result);
2917 return cli_get_nt_error(cli);
2918 }
2919
2920 result->trans.np.fnum = fnum;
2921
2922 DLIST_ADD(cli->pipe_list, result);
2923 talloc_set_destructor(result, rpc_pipe_destructor);
2924
2925 *presult = result;
2926 return NT_STATUS_OK;
2927 }
2928
2929 /****************************************************************************
2930 Open a pipe to a remote server.
2931 ****************************************************************************/
2932
2933 static NTSTATUS cli_rpc_pipe_open(struct cli_state *cli,
2934 const struct ndr_syntax_id *interface,
2935 struct rpc_pipe_client **presult)
2936 {
2937 if (ndr_syntax_id_equal(interface, &ndr_table_drsuapi.syntax_id)) {
2938 /*
2939 * We should have a better way to figure out this drsuapi
2940 * speciality...
2941 */
2942 return rpc_pipe_open_tcp(NULL, cli->desthost, interface,
2943 presult);
2944 }
2945
2946 return rpc_pipe_open_np(cli, interface, presult);
2947 }
2948
2949 /****************************************************************************
2950 Open a named pipe to an SMB server and bind anonymously.
2951 ****************************************************************************/
2952
2953 NTSTATUS cli_rpc_pipe_open_noauth(struct cli_state *cli,
2954 const struct ndr_syntax_id *interface,
2955 struct rpc_pipe_client **presult)
2956 {
2957 struct rpc_pipe_client *result;
2958 struct cli_pipe_auth_data *auth;
2959 NTSTATUS status;
2960
2961 status = cli_rpc_pipe_open(cli, interface, &result);
2962 if (!NT_STATUS_IS_OK(status)) {
2963 return status;
2964 }
2965
2966 status = rpccli_anon_bind_data(result, &auth);
2967 if (!NT_STATUS_IS_OK(status)) {
2968 DEBUG(0, ("rpccli_anon_bind_data returned %s\n",
2969 nt_errstr(status)));
2970 TALLOC_FREE(result);
2971 return status;
2972 }
2973
2974 /*
2975 * This is a bit of an abstraction violation due to the fact that an
2976 * anonymous bind on an authenticated SMB inherits the user/domain
2977 * from the enclosing SMB creds
2978 */
2979
2980 TALLOC_FREE(auth->user_name);
2981 TALLOC_FREE(auth->domain);
2982
2983 auth->user_name = talloc_strdup(auth, cli->user_name);
2984 auth->domain = talloc_strdup(auth, cli->domain);
2985
2986 if ((auth->user_name == NULL) || (auth->domain == NULL)) {
2987 TALLOC_FREE(result);
2988 return NT_STATUS_NO_MEMORY;
2989 }
2990
2991 status = rpc_pipe_bind(result, auth);
2992 if (!NT_STATUS_IS_OK(status)) {
2993 int lvl = 0;
2994 if (ndr_syntax_id_equal(interface,
2995 &ndr_table_dssetup.syntax_id)) {
2996 /* non AD domains just don't have this pipe, avoid
2997 * level 0 statement in that case - gd */
2998 lvl = 3;
2999 }
3000 DEBUG(lvl, ("cli_rpc_pipe_open_noauth: rpc_pipe_bind for pipe "
3001 "%s failed with error %s\n",
3002 cli_get_pipe_name_from_iface(debug_ctx(), cli,
3003 interface),
3004 nt_errstr(status) ));
3005 TALLOC_FREE(result);
3006 return status;
3007 }
3008
3009 DEBUG(10,("cli_rpc_pipe_open_noauth: opened pipe %s to machine "
3010 "%s and bound anonymously.\n", result->trans.np.pipe_name,
3011 cli->desthost ));
3012
3013 *presult = result;
3014 return NT_STATUS_OK;
3015 }
3016
3017 /****************************************************************************
3018 Open a named pipe to an SMB server and bind using NTLMSSP or SPNEGO NTLMSSP
3019 ****************************************************************************/
3020
3021 static NTSTATUS cli_rpc_pipe_open_ntlmssp_internal(struct cli_state *cli,
3022 const struct ndr_syntax_id *interface,
3023 enum pipe_auth_type auth_type,
3024 enum pipe_auth_level auth_level,
3025 const char *domain,
3026 const char *username,
3027 const char *password,
3028 struct rpc_pipe_client **presult)
3029 {
3030 struct rpc_pipe_client *result;
3031 struct cli_pipe_auth_data *auth;
3032 NTSTATUS status;
3033
3034 status = cli_rpc_pipe_open(cli, interface, &result);
3035 if (!NT_STATUS_IS_OK(status)) {
3036 return status;
3037 }
3038
3039 status = rpccli_ntlmssp_bind_data(
3040 result, auth_type, auth_level, domain, username,
3041 cli->pwd.null_pwd ? NULL : password, &auth);
3042 if (!NT_STATUS_IS_OK(status)) {
3043 DEBUG(0, ("rpccli_ntlmssp_bind_data returned %s\n",
3044 nt_errstr(status)));
3045 goto err;
3046 }
3047
3048 status = rpc_pipe_bind(result, auth);
3049 if (!NT_STATUS_IS_OK(status)) {
3050 DEBUG(0, ("cli_rpc_pipe_open_ntlmssp_internal: cli_rpc_pipe_bind failed with error %s\n",
3051 nt_errstr(status) ));
3052 goto err;
3053 }
3054
3055 DEBUG(10,("cli_rpc_pipe_open_ntlmssp_internal: opened pipe %s to "
3056 "machine %s and bound NTLMSSP as user %s\\%s.\n",
3057 result->trans.np.pipe_name, cli->desthost,
3058 domain, username ));
3059
3060 *presult = result;
3061 return NT_STATUS_OK;
3062
3063 err:
3064
3065 TALLOC_FREE(result);
3066 return status;
3067 }
3068
3069 /****************************************************************************
3070 External interface.
3071 Open a named pipe to an SMB server and bind using NTLMSSP (bind type 10)
3072 ****************************************************************************/
3073
3074 NTSTATUS cli_rpc_pipe_open_ntlmssp(struct cli_state *cli,
3075 const struct ndr_syntax_id *interface,
3076 enum pipe_auth_level auth_level,
3077 const char *domain,
3078 const char *username,
3079 const char *password,
3080 struct rpc_pipe_client **presult)
3081 {
3082 return cli_rpc_pipe_open_ntlmssp_internal(cli,
3083 interface,
3084 PIPE_AUTH_TYPE_NTLMSSP,
3085 auth_level,
3086 domain,
3087 username,
3088 password,
3089 presult);
3090 }
3091
3092 /****************************************************************************
3093 External interface.
3094 Open a named pipe to an SMB server and bind using spnego NTLMSSP (bind type 9)
3095 ****************************************************************************/
3096
3097 NTSTATUS cli_rpc_pipe_open_spnego_ntlmssp(struct cli_state *cli,
3098 const struct ndr_syntax_id *interface,
3099 enum pipe_auth_level auth_level,
3100 const char *domain,
3101 const char *username,
3102 const char *password,
3103 struct rpc_pipe_client **presult)
3104 {
3105 return cli_rpc_pipe_open_ntlmssp_internal(cli,
3106 interface,
3107 PIPE_AUTH_TYPE_SPNEGO_NTLMSSP,
3108 auth_level,
3109 domain,
3110 username,
3111 password,
3112 presult);
3113 }
3114
3115 /****************************************************************************
3116 Get a the schannel session key out of an already opened netlogon pipe.
3117 ****************************************************************************/
3118 static NTSTATUS get_schannel_session_key_common(struct rpc_pipe_client *netlogon_pipe,
3119 struct cli_state *cli,
3120 const char *domain,
3121 uint32 *pneg_flags)
3122 {
3123 uint32 sec_chan_type = 0;
3124 unsigned char machine_pwd[16];
3125 const char *machine_account;
3126 NTSTATUS status;
3127
3128 /* Get the machine account credentials from secrets.tdb. */
3129 if (!get_trust_pw_hash(domain, machine_pwd, &machine_account,
3130 &sec_chan_type))
3131 {
3132 DEBUG(0, ("get_schannel_session_key: could not fetch "
3133 "trust account password for domain '%s'\n",
3134 domain));
3135 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
3136 }
3137
3138 status = rpccli_netlogon_setup_creds(netlogon_pipe,
3139 cli->desthost, /* server name */
3140 domain, /* domain */
3141 global_myname(), /* client name */
3142 machine_account, /* machine account name */
3143 machine_pwd,
3144 sec_chan_type,
3145 pneg_flags);
3146
3147 if (!NT_STATUS_IS_OK(status)) {
3148 DEBUG(3, ("get_schannel_session_key_common: "
3149 "rpccli_netlogon_setup_creds failed with result %s "
3150 "to server %s, domain %s, machine account %s.\n",
3151 nt_errstr(status), cli->desthost, domain,
3152 machine_account ));
3153 return status;
3154 }
3155
3156 if (((*pneg_flags) & NETLOGON_NEG_SCHANNEL) == 0) {
3157 DEBUG(3, ("get_schannel_session_key: Server %s did not offer schannel\n",
3158 cli->desthost));
3159 return NT_STATUS_INVALID_NETWORK_RESPONSE;
3160 }
3161
3162 return NT_STATUS_OK;;
3163 }
3164
3165 /****************************************************************************
3166 Open a netlogon pipe and get the schannel session key.
3167 Now exposed to external callers.
3168 ****************************************************************************/
3169
3170
3171 NTSTATUS get_schannel_session_key(struct cli_state *cli,
3172 const char *domain,
3173 uint32 *pneg_flags,
3174 struct rpc_pipe_client **presult)
3175 {
3176 struct rpc_pipe_client *netlogon_pipe = NULL;
3177 NTSTATUS status;
3178
3179 status = cli_rpc_pipe_open_noauth(cli, &ndr_table_netlogon.syntax_id,
3180 &netlogon_pipe);
3181 if (!NT_STATUS_IS_OK(status)) {
3182 return status;
3183 }
3184
3185 status = get_schannel_session_key_common(netlogon_pipe, cli, domain,
3186 pneg_flags);
3187 if (!NT_STATUS_IS_OK(status)) {
3188 TALLOC_FREE(netlogon_pipe);
3189 return status;
3190 }
3191
3192 *presult = netlogon_pipe;
3193 return NT_STATUS_OK;
3194 }
3195
3196 /****************************************************************************
3197 External interface.
3198 Open a named pipe to an SMB server and bind using schannel (bind type 68)
3199 using session_key. sign and seal.
3200 ****************************************************************************/
3201
3202 NTSTATUS cli_rpc_pipe_open_schannel_with_key(struct cli_state *cli,
3203 const struct ndr_syntax_id *interface,
3204 enum pipe_auth_level auth_level,
3205 const char *domain,
3206 const struct dcinfo *pdc,
3207 struct rpc_pipe_client **presult)
3208 {
3209 struct rpc_pipe_client *result;
3210 struct cli_pipe_auth_data *auth;
3211 NTSTATUS status;
3212
3213 status = cli_rpc_pipe_open(cli, interface, &result);
3214 if (!NT_STATUS_IS_OK(status)) {
3215 return status;
3216 }
3217
3218 status = rpccli_schannel_bind_data(result, domain, auth_level,
3219 pdc->sess_key, &auth);
3220 if (!NT_STATUS_IS_OK(status)) {
3221 DEBUG(0, ("rpccli_schannel_bind_data returned %s\n",
3222 nt_errstr(status)));
3223 TALLOC_FREE(result);
3224 return status;
3225 }
3226
3227 status = rpc_pipe_bind(result, auth);
3228 if (!NT_STATUS_IS_OK(status)) {
3229 DEBUG(0, ("cli_rpc_pipe_open_schannel_with_key: "
3230 "cli_rpc_pipe_bind failed with error %s\n",
3231 nt_errstr(status) ));
3232 TALLOC_FREE(result);
3233 return status;
3234 }
3235
3236 /*
3237 * The credentials on a new netlogon pipe are the ones we are passed
3238 * in - copy them over.
3239 */
3240 result->dc = (struct dcinfo *)talloc_memdup(result, pdc, sizeof(*pdc));
3241 if (result->dc == NULL) {
3242 DEBUG(0, ("talloc failed\n"));
3243 TALLOC_FREE(result);
3244 return NT_STATUS_NO_MEMORY;
3245 }
3246
3247 DEBUG(10,("cli_rpc_pipe_open_schannel_with_key: opened pipe %s to machine %s "
3248 "for domain %s "
3249 "and bound using schannel.\n",
3250 result->trans.np.pipe_name, cli->desthost, domain ));
3251
3252 *presult = result;
3253 return NT_STATUS_OK;
3254 }
3255
3256 /****************************************************************************
3257 Open a named pipe to an SMB server and bind using schannel (bind type 68).
3258 Fetch the session key ourselves using a temporary netlogon pipe. This
3259 version uses an ntlmssp auth bound netlogon pipe to get the key.
3260 ****************************************************************************/
3261
3262 static NTSTATUS get_schannel_session_key_auth_ntlmssp(struct cli_state *cli,
3263 const char *domain,
3264 const char *username,
3265 const char *password,
3266 uint32 *pneg_flags,
3267 struct rpc_pipe_client **presult)
3268 {
3269 struct rpc_pipe_client *netlogon_pipe = NULL;
3270 NTSTATUS status;
3271
3272 status = cli_rpc_pipe_open_spnego_ntlmssp(
3273 cli, &ndr_table_netlogon.syntax_id, PIPE_AUTH_LEVEL_PRIVACY,
3274 domain, username, password, &netlogon_pipe);
3275 if (!NT_STATUS_IS_OK(status)) {
3276 return status;
3277 }
3278
3279 status = get_schannel_session_key_common(netlogon_pipe, cli, domain,
3280 pneg_flags);
3281 if (!NT_STATUS_IS_OK(status)) {
3282 TALLOC_FREE(netlogon_pipe);
3283 return status;
3284 }
3285
3286 *presult = netlogon_pipe;
3287 return NT_STATUS_OK;
3288 }
3289
3290 /****************************************************************************
3291 Open a named pipe to an SMB server and bind using schannel (bind type 68).
3292 Fetch the session key ourselves using a temporary netlogon pipe. This version
3293 uses an ntlmssp bind to get the session key.
3294 ****************************************************************************/
3295
3296 NTSTATUS cli_rpc_pipe_open_ntlmssp_auth_schannel(struct cli_state *cli,
3297 const struct ndr_syntax_id *interface,
3298 enum pipe_auth_level auth_level,
3299 const char *domain,
3300 const char *username,
3301 const char *password,
3302 struct rpc_pipe_client **presult)
3303 {
3304 uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
3305 struct rpc_pipe_client *netlogon_pipe = NULL;
3306 struct rpc_pipe_client *result = NULL;
3307 NTSTATUS status;
3308
3309 status = get_schannel_session_key_auth_ntlmssp(
3310 cli, domain, username, password, &neg_flags, &netlogon_pipe);
3311 if (!NT_STATUS_IS_OK(status)) {
3312 DEBUG(0,("cli_rpc_pipe_open_ntlmssp_auth_schannel: failed to get schannel session "
3313 "key from server %s for domain %s.\n",
3314 cli->desthost, domain ));
3315 return status;
3316 }
3317
3318 status = cli_rpc_pipe_open_schannel_with_key(
3319 cli, interface, auth_level, domain, netlogon_pipe->dc,
3320 &result);
3321
3322 /* Now we've bound using the session key we can close the netlog pipe. */
3323 TALLOC_FREE(netlogon_pipe);
3324
3325 if (NT_STATUS_IS_OK(status)) {
3326 *presult = result;
3327 }
3328 return status;
3329 }
3330
3331 /****************************************************************************
3332 Open a named pipe to an SMB server and bind using schannel (bind type 68).
3333 Fetch the session key ourselves using a temporary netlogon pipe.
3334 ****************************************************************************/
3335
3336 NTSTATUS cli_rpc_pipe_open_schannel(struct cli_state *cli,
3337 const struct ndr_syntax_id *interface,
3338 enum pipe_auth_level auth_level,
3339 const char *domain,
3340 struct rpc_pipe_client **presult)
3341 {
3342 uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
3343 struct rpc_pipe_client *netlogon_pipe = NULL;
3344 struct rpc_pipe_client *result = NULL;
3345 NTSTATUS status;
3346
3347 status = get_schannel_session_key(cli, domain, &neg_flags,
3348 &netlogon_pipe);
3349 if (!NT_STATUS_IS_OK(status)) {
3350 DEBUG(0,("cli_rpc_pipe_open_schannel: failed to get schannel session "
3351 "key from server %s for domain %s.\n",
3352 cli->desthost, domain ));
3353 return status;
3354 }
3355
3356 status = cli_rpc_pipe_open_schannel_with_key(
3357 cli, interface, auth_level, domain, netlogon_pipe->dc,
3358 &result);
3359
3360 /* Now we've bound using the session key we can close the netlog pipe. */
3361 TALLOC_FREE(netlogon_pipe);
3362
3363 if (NT_STATUS_IS_OK(status)) {
3364 *presult = result;
3365 }
3366
3367 return NT_STATUS_OK;
3368 }
3369
3370 /****************************************************************************
3371 Open a named pipe to an SMB server and bind using krb5 (bind type 16).
3372 The idea is this can be called with service_princ, username and password all
3373 NULL so long as the caller has a TGT.
3374 ****************************************************************************/
3375
3376 NTSTATUS cli_rpc_pipe_open_krb5(struct cli_state *cli,
3377 const struct ndr_syntax_id *interface,
3378 enum pipe_auth_level auth_level,
3379 const char *service_princ,
3380 const char *username,
3381 const char *password,
3382 struct rpc_pipe_client **presult)
3383 {
3384 #ifdef HAVE_KRB5
3385 struct rpc_pipe_client *result;
3386 struct cli_pipe_auth_data *auth;
3387 NTSTATUS status;
3388
3389 status = cli_rpc_pipe_open(cli, interface, &result);
3390 if (!NT_STATUS_IS_OK(status)) {
3391 return status;
3392 }
3393
3394 status = rpccli_kerberos_bind_data(result, auth_level, service_princ,
3395 username, password, &auth);
3396 if (!NT_STATUS_IS_OK(status)) {
3397 DEBUG(0, ("rpccli_kerberos_bind_data returned %s\n",
3398 nt_errstr(status)));
3399 TALLOC_FREE(result);
3400 return status;
3401 }
3402
3403 status = rpc_pipe_bind(result, auth);
3404 if (!NT_STATUS_IS_OK(status)) {
3405 DEBUG(0, ("cli_rpc_pipe_open_krb5: cli_rpc_pipe_bind failed "
3406 "with error %s\n", nt_errstr(status)));
3407 TALLOC_FREE(result);
3408 return status;
3409 }
3410
3411 *presult = result;
3412 return NT_STATUS_OK;
3413 #else
3414 DEBUG(0,("cli_rpc_pipe_open_krb5: kerberos not found at compile time.\n"));
3415 return NT_STATUS_NOT_IMPLEMENTED;
3416 #endif
3417 }
3418
3419 NTSTATUS cli_get_session_key(TALLOC_CTX *mem_ctx,
3420 struct rpc_pipe_client *cli,
3421 DATA_BLOB *session_key)
3422 {
3423 if (!session_key || !cli) {
3424 return NT_STATUS_INVALID_PARAMETER;
3425 }
3426
3427 if (!cli->auth) {
3428 return NT_STATUS_INVALID_PARAMETER;
3429 }
3430
3431 switch (cli->auth->auth_type) {
3432 case PIPE_AUTH_TYPE_SCHANNEL:
3433 *session_key = data_blob_talloc(mem_ctx,
3434 cli->auth->a_u.schannel_auth->sess_key, 16);
3435 break;
3436 case PIPE_AUTH_TYPE_NTLMSSP:
3437 case PIPE_AUTH_TYPE_SPNEGO_NTLMSSP:
3438 *session_key = data_blob_talloc(mem_ctx,
3439 cli->auth->a_u.ntlmssp_state->session_key.data,
3440 cli->auth->a_u.ntlmssp_state->session_key.length);
3441 break;
3442 case PIPE_AUTH_TYPE_KRB5:
3443 case PIPE_AUTH_TYPE_SPNEGO_KRB5:
3444 *session_key = data_blob_talloc(mem_ctx,
3445 cli->auth->a_u.kerberos_auth->session_key.data,
3446 cli->auth->a_u.kerberos_auth->session_key.length);
3447 break;
3448 case PIPE_AUTH_TYPE_NONE:
3449 default:
3450 return NT_STATUS_NO_USER_SESSION_KEY;
3451 }
3452
3453 return NT_STATUS_OK;
3454 }