source: trunk/server/librpc/rpc/binding.c@ 707

Last change on this file since 707 was 414, checked in by Herwig Bauernfeind, 16 years ago

Samba 3.5.0: Initial import
File size: 19.0 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3
4 dcerpc utility functions
5
6 Copyright (C) Andrew Tridgell 2003
7 Copyright (C) Jelmer Vernooij 2004
8 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
9 Copyright (C) Rafal Szczesniak 2006
10
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
15
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
20
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>.
23*/
24
25#include "includes.h"
26#include "librpc/gen_ndr/ndr_epmapper.h"
27#include "librpc/gen_ndr/ndr_misc.h"
28#include "librpc/rpc/dcerpc.h"
29#undef strcasecmp
30
31#define MAX_PROTSEQ 10
32
33static const struct {
34 const char *name;
35 enum dcerpc_transport_t transport;
36 int num_protocols;
37 enum epm_protocol protseq[MAX_PROTSEQ];
38} transports[] = {
39 { "ncacn_np", NCACN_NP, 3,
40 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_SMB, EPM_PROTOCOL_NETBIOS }},
41 { "ncacn_ip_tcp", NCACN_IP_TCP, 3,
42 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_TCP, EPM_PROTOCOL_IP } },
43 { "ncacn_http", NCACN_HTTP, 3,
44 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_HTTP, EPM_PROTOCOL_IP } },
45 { "ncadg_ip_udp", NCACN_IP_UDP, 3,
46 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UDP, EPM_PROTOCOL_IP } },
47 { "ncalrpc", NCALRPC, 2,
48 { EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_NAMED_PIPE } },
49 { "ncacn_unix_stream", NCACN_UNIX_STREAM, 2,
50 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_UNIX_DS } },
51 { "ncadg_unix_dgram", NCADG_UNIX_DGRAM, 2,
52 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UNIX_DS } },
53 { "ncacn_at_dsp", NCACN_AT_DSP, 3,
54 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DSP } },
55 { "ncadg_at_ddp", NCADG_AT_DDP, 3,
56 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DDP } },
57 { "ncacn_vns_ssp", NCACN_VNS_SPP, 3,
58 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_SPP } },
59 { "ncacn_vns_ipc", NCACN_VNS_IPC, 3,
60 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_IPC }, },
61 { "ncadg_ipx", NCADG_IPX, 2,
62 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_IPX },
63 },
64 { "ncacn_spx", NCACN_SPX, 3,
65 /* I guess some MS programmer confused the identifier for
66 * EPM_PROTOCOL_UUID (0x0D or 13) with the one for
67 * EPM_PROTOCOL_SPX (0x13) here. -- jelmer*/
68 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_UUID },
69 },
70};
71
72static const struct {
73 const char *name;
74 uint32_t flag;
75} ncacn_options[] = {
76 {"sign", DCERPC_SIGN},
77 {"seal", DCERPC_SEAL},
78 {"connect", DCERPC_CONNECT},
79 {"spnego", DCERPC_AUTH_SPNEGO},
80 {"ntlm", DCERPC_AUTH_NTLM},
81 {"krb5", DCERPC_AUTH_KRB5},
82 {"validate", DCERPC_DEBUG_VALIDATE_BOTH},
83 {"print", DCERPC_DEBUG_PRINT_BOTH},
84 {"padcheck", DCERPC_DEBUG_PAD_CHECK},
85 {"bigendian", DCERPC_PUSH_BIGENDIAN},
86 {"smb2", DCERPC_SMB2},
87 {"hdrsign", DCERPC_HEADER_SIGNING},
88 {"ndr64", DCERPC_NDR64}
89};
90
91const char *epm_floor_string(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor)
92{
93 struct ndr_syntax_id syntax;
94 NTSTATUS status;
95
96 switch(epm_floor->lhs.protocol) {
97 case EPM_PROTOCOL_UUID:
98 status = dcerpc_floor_get_lhs_data(epm_floor, &syntax);
99 if (NT_STATUS_IS_OK(status)) {
100 /* lhs is used: UUID */
101 char *uuidstr;
102
103 if (GUID_equal(&syntax.uuid, &ndr_transfer_syntax.uuid)) {
104 return "NDR";
105 }
106
107 if (GUID_equal(&syntax.uuid, &ndr64_transfer_syntax.uuid)) {
108 return "NDR64";
109 }
110
111 uuidstr = GUID_string(mem_ctx, &syntax.uuid);
112
113 return talloc_asprintf(mem_ctx, " uuid %s/0x%02x", uuidstr, syntax.if_version);
114 } else { /* IPX */
115 return talloc_asprintf(mem_ctx, "IPX:%s",
116 data_blob_hex_string(mem_ctx, &epm_floor->rhs.uuid.unknown));
117 }
118
119 case EPM_PROTOCOL_NCACN:
120 return "RPC-C";
121
122 case EPM_PROTOCOL_NCADG:
123 return "RPC";
124
125 case EPM_PROTOCOL_NCALRPC:
126 return "NCALRPC";
127
128 case EPM_PROTOCOL_DNET_NSP:
129 return "DNET/NSP";
130
131 case EPM_PROTOCOL_IP:
132 return talloc_asprintf(mem_ctx, "IP:%s", epm_floor->rhs.ip.ipaddr);
133
134 case EPM_PROTOCOL_NAMED_PIPE:
135 return talloc_asprintf(mem_ctx, "NAMED-PIPE:%s", epm_floor->rhs.named_pipe.path);
136
137 case EPM_PROTOCOL_SMB:
138 return talloc_asprintf(mem_ctx, "SMB:%s", epm_floor->rhs.smb.unc);
139
140 case EPM_PROTOCOL_UNIX_DS:
141 return talloc_asprintf(mem_ctx, "Unix:%s", epm_floor->rhs.unix_ds.path);
142
143 case EPM_PROTOCOL_NETBIOS:
144 return talloc_asprintf(mem_ctx, "NetBIOS:%s", epm_floor->rhs.netbios.name);
145
146 case EPM_PROTOCOL_NETBEUI:
147 return "NETBeui";
148
149 case EPM_PROTOCOL_SPX:
150 return "SPX";
151
152 case EPM_PROTOCOL_NB_IPX:
153 return "NB_IPX";
154
155 case EPM_PROTOCOL_HTTP:
156 return talloc_asprintf(mem_ctx, "HTTP:%d", epm_floor->rhs.http.port);
157
158 case EPM_PROTOCOL_TCP:
159 return talloc_asprintf(mem_ctx, "TCP:%d", epm_floor->rhs.tcp.port);
160
161 case EPM_PROTOCOL_UDP:
162 return talloc_asprintf(mem_ctx, "UDP:%d", epm_floor->rhs.udp.port);
163
164 default:
165 return talloc_asprintf(mem_ctx, "UNK(%02x):", epm_floor->lhs.protocol);
166 }
167}
168
169
170/*
171 form a binding string from a binding structure
172*/
173_PUBLIC_ char *dcerpc_binding_string(TALLOC_CTX *mem_ctx, const struct dcerpc_binding *b)
174{
175 char *s = talloc_strdup(mem_ctx, "");
176 int i;
177 const char *t_name = NULL;
178
179 if (b->transport != NCA_UNKNOWN) {
180 t_name = derpc_transport_string_by_transport(b->transport);
181 if (!t_name) {
182 return NULL;
183 }
184 }
185
186 if (!GUID_all_zero(&b->object.uuid)) {
187 s = talloc_asprintf(s, "%s@",
188 GUID_string(mem_ctx, &b->object.uuid));
189 }
190
191 if (t_name != NULL) {
192 s = talloc_asprintf_append_buffer(s, "%s:", t_name);
193 if (s == NULL) {
194 return NULL;
195 }
196 }
197
198 if (b->host) {
199 s = talloc_asprintf_append_buffer(s, "%s", b->host);
200 }
201
202 if (!b->endpoint && !b->options && !b->flags) {
203 return s;
204 }
205
206 s = talloc_asprintf_append_buffer(s, "[");
207
208 if (b->endpoint) {
209 s = talloc_asprintf_append_buffer(s, "%s", b->endpoint);
210 }
211
212 /* this is a *really* inefficent way of dealing with strings,
213 but this is rarely called and the strings are always short,
214 so I don't care */
215 for (i=0;b->options && b->options[i];i++) {
216 s = talloc_asprintf_append_buffer(s, ",%s", b->options[i]);
217 if (!s) return NULL;
218 }
219
220 for (i=0;i<ARRAY_SIZE(ncacn_options);i++) {
221 if (b->flags & ncacn_options[i].flag) {
222 s = talloc_asprintf_append_buffer(s, ",%s", ncacn_options[i].name);
223 if (!s) return NULL;
224 }
225 }
226
227 s = talloc_asprintf_append_buffer(s, "]");
228
229 return s;
230}
231
232/*
233 parse a binding string into a dcerpc_binding structure
234*/
235_PUBLIC_ NTSTATUS dcerpc_parse_binding(TALLOC_CTX *mem_ctx, const char *s, struct dcerpc_binding **b_out)
236{
237 struct dcerpc_binding *b;
238 char *options;
239 char *p;
240 int i, j, comma_count;
241
242 b = talloc(mem_ctx, struct dcerpc_binding);
243 if (!b) {
244 return NT_STATUS_NO_MEMORY;
245 }
246
247 p = strchr(s, '@');
248
249 if (p && PTR_DIFF(p, s) == 36) { /* 36 is the length of a UUID */
250 NTSTATUS status;
251 DATA_BLOB blob = data_blob(s, 36);
252 status = GUID_from_data_blob(&blob, &b->object.uuid);
253
254 if (NT_STATUS_IS_ERR(status)) {
255 DEBUG(0, ("Failed parsing UUID\n"));
256 return status;
257 }
258
259 s = p + 1;
260 } else {
261 ZERO_STRUCT(b->object);
262 }
263
264 b->object.if_version = 0;
265
266 p = strchr(s, ':');
267
268 if (p == NULL) {
269 b->transport = NCA_UNKNOWN;
270 } else {
271 char *type = talloc_strndup(mem_ctx, s, PTR_DIFF(p, s));
272 if (!type) {
273 return NT_STATUS_NO_MEMORY;
274 }
275
276 for (i=0;i<ARRAY_SIZE(transports);i++) {
277 if (strcasecmp(type, transports[i].name) == 0) {
278 b->transport = transports[i].transport;
279 break;
280 }
281 }
282
283 if (i==ARRAY_SIZE(transports)) {
284 DEBUG(0,("Unknown dcerpc transport '%s'\n", type));
285 return NT_STATUS_INVALID_PARAMETER;
286 }
287
288 talloc_free(type);
289
290 s = p+1;
291 }
292
293 p = strchr(s, '[');
294 if (p) {
295 b->host = talloc_strndup(b, s, PTR_DIFF(p, s));
296 options = talloc_strdup(mem_ctx, p+1);
297 if (options[strlen(options)-1] != ']') {
298 return NT_STATUS_INVALID_PARAMETER;
299 }
300 options[strlen(options)-1] = 0;
301 } else {
302 b->host = talloc_strdup(b, s);
303 options = NULL;
304 }
305 if (!b->host) {
306 return NT_STATUS_NO_MEMORY;
307 }
308
309 b->target_hostname = b->host;
310
311 b->options = NULL;
312 b->flags = 0;
313 b->assoc_group_id = 0;
314 b->endpoint = NULL;
315
316 if (!options) {
317 *b_out = b;
318 return NT_STATUS_OK;
319 }
320
321 comma_count = count_chars(options, ',');
322
323 b->options = talloc_array(b, const char *, comma_count+2);
324 if (!b->options) {
325 return NT_STATUS_NO_MEMORY;
326 }
327
328 for (i=0; (p = strchr(options, ',')); i++) {
329 b->options[i] = talloc_strndup(b, options, PTR_DIFF(p, options));
330 if (!b->options[i]) {
331 return NT_STATUS_NO_MEMORY;
332 }
333 options = p+1;
334 }
335 b->options[i] = options;
336 b->options[i+1] = NULL;
337
338 /* some options are pre-parsed for convenience */
339 for (i=0;b->options[i];i++) {
340 for (j=0;j<ARRAY_SIZE(ncacn_options);j++) {
341 if (strcasecmp(ncacn_options[j].name, b->options[i]) == 0) {
342 int k;
343 b->flags |= ncacn_options[j].flag;
344 for (k=i;b->options[k];k++) {
345 b->options[k] = b->options[k+1];
346 }
347 i--;
348 break;
349 }
350 }
351 }
352
353 if (b->options[0]) {
354 /* Endpoint is first option */
355 b->endpoint = b->options[0];
356 if (strlen(b->endpoint) == 0) b->endpoint = NULL;
357
358 for (i=0;b->options[i];i++) {
359 b->options[i] = b->options[i+1];
360 }
361 }
362
363 if (b->options[0] == NULL)
364 b->options = NULL;
365
366 *b_out = b;
367 return NT_STATUS_OK;
368}
369
370_PUBLIC_ NTSTATUS dcerpc_floor_get_lhs_data(const struct epm_floor *epm_floor,
371 struct ndr_syntax_id *syntax)
372{
373 TALLOC_CTX *mem_ctx = talloc_init("floor_get_lhs_data");
374 struct ndr_pull *ndr;
375 enum ndr_err_code ndr_err;
376 uint16_t if_version=0;
377
378 ndr = ndr_pull_init_blob(&epm_floor->lhs.lhs_data, mem_ctx, NULL);
379 if (ndr == NULL) {
380 talloc_free(mem_ctx);
381 return NT_STATUS_NO_MEMORY;
382 }
383 ndr->flags |= LIBNDR_FLAG_NOALIGN;
384
385 ndr_err = ndr_pull_GUID(ndr, NDR_SCALARS | NDR_BUFFERS, &syntax->uuid);
386 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
387 talloc_free(mem_ctx);
388 return ndr_map_error2ntstatus(ndr_err);
389 }
390
391 ndr_err = ndr_pull_uint16(ndr, NDR_SCALARS, &if_version);
392 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
393 talloc_free(mem_ctx);
394 return ndr_map_error2ntstatus(ndr_err);
395 }
396
397 syntax->if_version = if_version;
398
399 talloc_free(mem_ctx);
400
401 return NT_STATUS_OK;
402}
403
404static DATA_BLOB dcerpc_floor_pack_lhs_data(TALLOC_CTX *mem_ctx, const struct ndr_syntax_id *syntax)
405{
406 struct ndr_push *ndr = ndr_push_init_ctx(mem_ctx, NULL);
407
408 ndr->flags |= LIBNDR_FLAG_NOALIGN;
409
410 ndr_push_GUID(ndr, NDR_SCALARS | NDR_BUFFERS, &syntax->uuid);
411 ndr_push_uint16(ndr, NDR_SCALARS, syntax->if_version);
412
413 return ndr_push_blob(ndr);
414}
415
416const char *dcerpc_floor_get_rhs_data(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor)
417{
418 switch (epm_floor->lhs.protocol) {
419 case EPM_PROTOCOL_TCP:
420 if (epm_floor->rhs.tcp.port == 0) return NULL;
421 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.tcp.port);
422
423 case EPM_PROTOCOL_UDP:
424 if (epm_floor->rhs.udp.port == 0) return NULL;
425 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.udp.port);
426
427 case EPM_PROTOCOL_HTTP:
428 if (epm_floor->rhs.http.port == 0) return NULL;
429 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.http.port);
430
431 case EPM_PROTOCOL_IP:
432 return talloc_strdup(mem_ctx, epm_floor->rhs.ip.ipaddr);
433
434 case EPM_PROTOCOL_NCACN:
435 return NULL;
436
437 case EPM_PROTOCOL_NCADG:
438 return NULL;
439
440 case EPM_PROTOCOL_SMB:
441 if (strlen(epm_floor->rhs.smb.unc) == 0) return NULL;
442 return talloc_strdup(mem_ctx, epm_floor->rhs.smb.unc);
443
444 case EPM_PROTOCOL_NAMED_PIPE:
445 if (strlen(epm_floor->rhs.named_pipe.path) == 0) return NULL;
446 return talloc_strdup(mem_ctx, epm_floor->rhs.named_pipe.path);
447
448 case EPM_PROTOCOL_NETBIOS:
449 if (strlen(epm_floor->rhs.netbios.name) == 0) return NULL;
450 return talloc_strdup(mem_ctx, epm_floor->rhs.netbios.name);
451
452 case EPM_PROTOCOL_NCALRPC:
453 return NULL;
454
455 case EPM_PROTOCOL_VINES_SPP:
456 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.vines_spp.port);
457
458 case EPM_PROTOCOL_VINES_IPC:
459 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.vines_ipc.port);
460
461 case EPM_PROTOCOL_STREETTALK:
462 return talloc_strdup(mem_ctx, epm_floor->rhs.streettalk.streettalk);
463
464 case EPM_PROTOCOL_UNIX_DS:
465 if (strlen(epm_floor->rhs.unix_ds.path) == 0) return NULL;
466 return talloc_strdup(mem_ctx, epm_floor->rhs.unix_ds.path);
467
468 case EPM_PROTOCOL_NULL:
469 return NULL;
470
471 default:
472 DEBUG(0,("Unsupported lhs protocol %d\n", epm_floor->lhs.protocol));
473 break;
474 }
475
476 return NULL;
477}
478
479static NTSTATUS dcerpc_floor_set_rhs_data(TALLOC_CTX *mem_ctx,
480 struct epm_floor *epm_floor,
481 const char *data)
482{
483 switch (epm_floor->lhs.protocol) {
484 case EPM_PROTOCOL_TCP:
485 epm_floor->rhs.tcp.port = atoi(data);
486 return NT_STATUS_OK;
487
488 case EPM_PROTOCOL_UDP:
489 epm_floor->rhs.udp.port = atoi(data);
490 return NT_STATUS_OK;
491
492 case EPM_PROTOCOL_HTTP:
493 epm_floor->rhs.http.port = atoi(data);
494 return NT_STATUS_OK;
495
496 case EPM_PROTOCOL_IP:
497 epm_floor->rhs.ip.ipaddr = talloc_strdup(mem_ctx, data);
498 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.ip.ipaddr);
499 return NT_STATUS_OK;
500
501 case EPM_PROTOCOL_NCACN:
502 epm_floor->rhs.ncacn.minor_version = 0;
503 return NT_STATUS_OK;
504
505 case EPM_PROTOCOL_NCADG:
506 epm_floor->rhs.ncadg.minor_version = 0;
507 return NT_STATUS_OK;
508
509 case EPM_PROTOCOL_SMB:
510 epm_floor->rhs.smb.unc = talloc_strdup(mem_ctx, data);
511 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.smb.unc);
512 return NT_STATUS_OK;
513
514 case EPM_PROTOCOL_NAMED_PIPE:
515 epm_floor->rhs.named_pipe.path = talloc_strdup(mem_ctx, data);
516 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.named_pipe.path);
517 return NT_STATUS_OK;
518
519 case EPM_PROTOCOL_NETBIOS:
520 epm_floor->rhs.netbios.name = talloc_strdup(mem_ctx, data);
521 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.netbios.name);
522 return NT_STATUS_OK;
523
524 case EPM_PROTOCOL_NCALRPC:
525 return NT_STATUS_OK;
526
527 case EPM_PROTOCOL_VINES_SPP:
528 epm_floor->rhs.vines_spp.port = atoi(data);
529 return NT_STATUS_OK;
530
531 case EPM_PROTOCOL_VINES_IPC:
532 epm_floor->rhs.vines_ipc.port = atoi(data);
533 return NT_STATUS_OK;
534
535 case EPM_PROTOCOL_STREETTALK:
536 epm_floor->rhs.streettalk.streettalk = talloc_strdup(mem_ctx, data);
537 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.streettalk.streettalk);
538 return NT_STATUS_OK;
539
540 case EPM_PROTOCOL_UNIX_DS:
541 epm_floor->rhs.unix_ds.path = talloc_strdup(mem_ctx, data);
542 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.unix_ds.path);
543 return NT_STATUS_OK;
544
545 case EPM_PROTOCOL_NULL:
546 return NT_STATUS_OK;
547
548 default:
549 DEBUG(0,("Unsupported lhs protocol %d\n", epm_floor->lhs.protocol));
550 break;
551 }
552
553 return NT_STATUS_NOT_SUPPORTED;
554}
555
556enum dcerpc_transport_t dcerpc_transport_by_endpoint_protocol(int prot)
557{
558 int i;
559
560 /* Find a transport that has 'prot' as 4th protocol */
561 for (i=0;i<ARRAY_SIZE(transports);i++) {
562 if (transports[i].num_protocols >= 2 &&
563 transports[i].protseq[1] == prot) {
564 return transports[i].transport;
565 }
566 }
567
568 /* Unknown transport */
569 return (unsigned int)-1;
570}
571
572_PUBLIC_ enum dcerpc_transport_t dcerpc_transport_by_tower(const struct epm_tower *tower)
573{
574 int i;
575
576 /* Find a transport that matches this tower */
577 for (i=0;i<ARRAY_SIZE(transports);i++) {
578 int j;
579 if (transports[i].num_protocols != tower->num_floors - 2) {
580 continue;
581 }
582
583 for (j = 0; j < transports[i].num_protocols; j++) {
584 if (transports[i].protseq[j] != tower->floors[j+2].lhs.protocol) {
585 break;
586 }
587 }
588
589 if (j == transports[i].num_protocols) {
590 return transports[i].transport;
591 }
592 }
593
594 /* Unknown transport */
595 return (unsigned int)-1;
596}
597
598_PUBLIC_ const char *derpc_transport_string_by_transport(enum dcerpc_transport_t t)
599{
600 int i;
601
602 for (i=0; i<ARRAY_SIZE(transports); i++) {
603 if (t == transports[i].transport) {
604 return transports[i].name;
605 }
606 }
607 return NULL;
608}
609
610_PUBLIC_ NTSTATUS dcerpc_binding_from_tower(TALLOC_CTX *mem_ctx,
611 struct epm_tower *tower,
612 struct dcerpc_binding **b_out)
613{
614 NTSTATUS status;
615 struct dcerpc_binding *binding;
616
617 binding = talloc(mem_ctx, struct dcerpc_binding);
618 NT_STATUS_HAVE_NO_MEMORY(binding);
619
620 ZERO_STRUCT(binding->object);
621 binding->options = NULL;
622 binding->host = NULL;
623 binding->target_hostname = NULL;
624 binding->flags = 0;
625 binding->assoc_group_id = 0;
626
627 binding->transport = dcerpc_transport_by_tower(tower);
628
629 if (binding->transport == (unsigned int)-1) {
630 return NT_STATUS_NOT_SUPPORTED;
631 }
632
633 if (tower->num_floors < 1) {
634 return NT_STATUS_OK;
635 }
636
637 /* Set object uuid */
638 status = dcerpc_floor_get_lhs_data(&tower->floors[0], &binding->object);
639
640 if (!NT_STATUS_IS_OK(status)) {
641 DEBUG(1, ("Error pulling object uuid and version: %s", nt_errstr(status)));
642 return status;
643 }
644
645 /* Ignore floor 1, it contains the NDR version info */
646
647 binding->options = NULL;
648
649 /* Set endpoint */
650 if (tower->num_floors >= 4) {
651 binding->endpoint = dcerpc_floor_get_rhs_data(mem_ctx, &tower->floors[3]);
652 } else {
653 binding->endpoint = NULL;
654 }
655
656 /* Set network address */
657 if (tower->num_floors >= 5) {
658 binding->host = dcerpc_floor_get_rhs_data(mem_ctx, &tower->floors[4]);
659 NT_STATUS_HAVE_NO_MEMORY(binding->host);
660 binding->target_hostname = binding->host;
661 }
662 *b_out = binding;
663 return NT_STATUS_OK;
664}
665
666_PUBLIC_ NTSTATUS dcerpc_binding_build_tower(TALLOC_CTX *mem_ctx,
667 const struct dcerpc_binding *binding,
668 struct epm_tower *tower)
669{
670 const enum epm_protocol *protseq = NULL;
671 int num_protocols = -1, i;
672 NTSTATUS status;
673
674 /* Find transport */
675 for (i=0;i<ARRAY_SIZE(transports);i++) {
676 if (transports[i].transport == binding->transport) {
677 protseq = transports[i].protseq;
678 num_protocols = transports[i].num_protocols;
679 break;
680 }
681 }
682
683 if (num_protocols == -1) {
684 DEBUG(0, ("Unable to find transport with id '%d'\n", binding->transport));
685 return NT_STATUS_UNSUCCESSFUL;
686 }
687
688 tower->num_floors = 2 + num_protocols;
689 tower->floors = talloc_array(mem_ctx, struct epm_floor, tower->num_floors);
690
691 /* Floor 0 */
692 tower->floors[0].lhs.protocol = EPM_PROTOCOL_UUID;
693
694 tower->floors[0].lhs.lhs_data = dcerpc_floor_pack_lhs_data(mem_ctx, &binding->object);
695
696 tower->floors[0].rhs.uuid.unknown = data_blob_talloc_zero(mem_ctx, 2);
697
698 /* Floor 1 */
699 tower->floors[1].lhs.protocol = EPM_PROTOCOL_UUID;
700
701 tower->floors[1].lhs.lhs_data = dcerpc_floor_pack_lhs_data(mem_ctx,
702 &ndr_transfer_syntax);
703
704 tower->floors[1].rhs.uuid.unknown = data_blob_talloc_zero(mem_ctx, 2);
705
706 /* Floor 2 to num_protocols */
707 for (i = 0; i < num_protocols; i++) {
708 tower->floors[2 + i].lhs.protocol = protseq[i];
709 tower->floors[2 + i].lhs.lhs_data = data_blob_talloc(mem_ctx, NULL, 0);
710 ZERO_STRUCT(tower->floors[2 + i].rhs);
711 dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[2 + i], "");
712 }
713
714 /* The 4th floor contains the endpoint */
715 if (num_protocols >= 2 && binding->endpoint) {
716 status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[3], binding->endpoint);
717 if (NT_STATUS_IS_ERR(status)) {
718 return status;
719 }
720 }
721
722 /* The 5th contains the network address */
723 if (num_protocols >= 3 && binding->host) {
724 if (is_ipaddress(binding->host)) {
725 status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[4],
726 binding->host);
727 } else {
728 /* note that we don't attempt to resolve the
729 name here - when we get a hostname here we
730 are in the client code, and want to put in
731 a wildcard all-zeros IP for the server to
732 fill in */
733 status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[4],
734 "0.0.0.0");
735 }
736 if (NT_STATUS_IS_ERR(status)) {
737 return status;
738 }
739 }
740
741 return NT_STATUS_OK;
742}
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