source: branches/samba-3.3.x/source/librpc/rpc/binding.c

Last change on this file was 206, checked in by Herwig Bauernfeind, 16 years ago

Import Samba 3.3 branch at 3.0.0 level (psmedley's port)
File size: 18.1 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
27#define MAX_PROTSEQ 10
28
29static const struct {
30 const char *name;
31 enum dcerpc_transport_t transport;
32 int num_protocols;
33 enum epm_protocol protseq[MAX_PROTSEQ];
34} transports[] = {
35 { "ncacn_np", NCACN_NP, 3,
36 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_SMB, EPM_PROTOCOL_NETBIOS }},
37 { "ncacn_ip_tcp", NCACN_IP_TCP, 3,
38 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_TCP, EPM_PROTOCOL_IP } },
39 { "ncacn_http", NCACN_HTTP, 3,
40 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_HTTP, EPM_PROTOCOL_IP } },
41 { "ncadg_ip_udp", NCACN_IP_UDP, 3,
42 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UDP, EPM_PROTOCOL_IP } },
43 { "ncalrpc", NCALRPC, 2,
44 { EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_PIPE } },
45 { "ncacn_unix_stream", NCACN_UNIX_STREAM, 2,
46 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_UNIX_DS } },
47 { "ncadg_unix_dgram", NCADG_UNIX_DGRAM, 2,
48 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UNIX_DS } },
49 { "ncacn_at_dsp", NCACN_AT_DSP, 3,
50 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DSP } },
51 { "ncadg_at_ddp", NCADG_AT_DDP, 3,
52 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DDP } },
53 { "ncacn_vns_ssp", NCACN_VNS_SPP, 3,
54 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_SPP } },
55 { "ncacn_vns_ipc", NCACN_VNS_IPC, 3,
56 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_IPC }, },
57 { "ncadg_ipx", NCADG_IPX, 2,
58 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_IPX },
59 },
60 { "ncacn_spx", NCACN_SPX, 3,
61 /* I guess some MS programmer confused the identifier for
62 * EPM_PROTOCOL_UUID (0x0D or 13) with the one for
63 * EPM_PROTOCOL_SPX (0x13) here. -- jelmer*/
64 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_UUID },
65 },
66};
67
68static const struct {
69 const char *name;
70 uint32_t flag;
71} ncacn_options[] = {
72 { "", 0 }
73};
74
75const char *epm_floor_string(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor)
76{
77 struct ndr_syntax_id syntax;
78 NTSTATUS status;
79
80 switch(epm_floor->lhs.protocol) {
81 case EPM_PROTOCOL_UUID:
82 status = dcerpc_floor_get_lhs_data(epm_floor, &syntax);
83 if (NT_STATUS_IS_OK(status)) {
84 /* lhs is used: UUID */
85 char *uuidstr;
86
87 if (GUID_equal(&syntax.uuid, &ndr_transfer_syntax.uuid)) {
88 return "NDR";
89 }
90
91 if (GUID_equal(&syntax.uuid, &ndr64_transfer_syntax.uuid)) {
92 return "NDR64";
93 }
94
95 uuidstr = GUID_string(mem_ctx, &syntax.uuid);
96
97 return talloc_asprintf(mem_ctx, " uuid %s/0x%02x", uuidstr, syntax.if_version);
98 } else { /* IPX */
99 return NULL;
100 }
101
102 case EPM_PROTOCOL_NCACN:
103 return "RPC-C";
104
105 case EPM_PROTOCOL_NCADG:
106 return "RPC";
107
108 case EPM_PROTOCOL_NCALRPC:
109 return "NCALRPC";
110
111 case EPM_PROTOCOL_DNET_NSP:
112 return "DNET/NSP";
113
114 case EPM_PROTOCOL_IP:
115 return talloc_asprintf(mem_ctx, "IP:%s", epm_floor->rhs.ip.ipaddr);
116
117 case EPM_PROTOCOL_PIPE:
118 return talloc_asprintf(mem_ctx, "PIPE:%s", epm_floor->rhs.pipe.path);
119
120 case EPM_PROTOCOL_SMB:
121 return talloc_asprintf(mem_ctx, "SMB:%s", epm_floor->rhs.smb.unc);
122
123 case EPM_PROTOCOL_UNIX_DS:
124 return talloc_asprintf(mem_ctx, "Unix:%s", epm_floor->rhs.unix_ds.path);
125
126 case EPM_PROTOCOL_NETBIOS:
127 return talloc_asprintf(mem_ctx, "NetBIOS:%s", epm_floor->rhs.netbios.name);
128
129 case EPM_PROTOCOL_NETBEUI:
130 return "NETBeui";
131
132 case EPM_PROTOCOL_SPX:
133 return "SPX";
134
135 case EPM_PROTOCOL_NB_IPX:
136 return "NB_IPX";
137
138 case EPM_PROTOCOL_HTTP:
139 return talloc_asprintf(mem_ctx, "HTTP:%d", epm_floor->rhs.http.port);
140
141 case EPM_PROTOCOL_TCP:
142 return talloc_asprintf(mem_ctx, "TCP:%d", epm_floor->rhs.tcp.port);
143
144 case EPM_PROTOCOL_UDP:
145 return talloc_asprintf(mem_ctx, "UDP:%d", epm_floor->rhs.udp.port);
146
147 default:
148 return talloc_asprintf(mem_ctx, "UNK(%02x):", epm_floor->lhs.protocol);
149 }
150}
151
152
153/*
154 form a binding string from a binding structure
155*/
156_PUBLIC_ char *dcerpc_binding_string(TALLOC_CTX *mem_ctx, const struct dcerpc_binding *b)
157{
158 char *s = talloc_strdup(mem_ctx, "");
159 int i;
160 const char *t_name = NULL;
161
162 if (b->transport != NCA_UNKNOWN) {
163 for (i=0;i<ARRAY_SIZE(transports);i++) {
164 if (transports[i].transport == b->transport) {
165 t_name = transports[i].name;
166 }
167 }
168 if (!t_name) {
169 return NULL;
170 }
171 }
172
173 if (!GUID_all_zero(&b->object.uuid)) {
174 s = talloc_asprintf(s, "%s@",
175 GUID_string(mem_ctx, &b->object.uuid));
176 }
177
178 if (t_name != NULL) {
179 s = talloc_asprintf_append_buffer(s, "%s:", t_name);
180 if (s == NULL) {
181 return NULL;
182 }
183 }
184
185 if (b->host) {
186 s = talloc_asprintf_append_buffer(s, "%s", b->host);
187 }
188
189 if (!b->endpoint && !b->options && !b->flags) {
190 return s;
191 }
192
193 s = talloc_asprintf_append_buffer(s, "[");
194
195 if (b->endpoint) {
196 s = talloc_asprintf_append_buffer(s, "%s", b->endpoint);
197 }
198
199 /* this is a *really* inefficent way of dealing with strings,
200 but this is rarely called and the strings are always short,
201 so I don't care */
202 for (i=0;b->options && b->options[i];i++) {
203 s = talloc_asprintf_append_buffer(s, ",%s", b->options[i]);
204 if (!s) return NULL;
205 }
206
207 for (i=0;i<ARRAY_SIZE(ncacn_options);i++) {
208 if (b->flags & ncacn_options[i].flag) {
209 s = talloc_asprintf_append_buffer(s, ",%s", ncacn_options[i].name);
210 if (!s) return NULL;
211 }
212 }
213
214 s = talloc_asprintf_append_buffer(s, "]");
215
216 return s;
217}
218
219/*
220 parse a binding string into a dcerpc_binding structure
221*/
222_PUBLIC_ NTSTATUS dcerpc_parse_binding(TALLOC_CTX *mem_ctx, const char *s, struct dcerpc_binding **b_out)
223{
224 struct dcerpc_binding *b;
225 char *options;
226 char *p;
227 int i, j, comma_count;
228
229 b = talloc(mem_ctx, struct dcerpc_binding);
230 if (!b) {
231 return NT_STATUS_NO_MEMORY;
232 }
233
234 p = strchr(s, '@');
235
236 if (p && PTR_DIFF(p, s) == 36) { /* 36 is the length of a UUID */
237 NTSTATUS status;
238
239 status = GUID_from_string(s, &b->object.uuid);
240
241 if (NT_STATUS_IS_ERR(status)) {
242 DEBUG(0, ("Failed parsing UUID\n"));
243 return status;
244 }
245
246 s = p + 1;
247 } else {
248 ZERO_STRUCT(b->object);
249 }
250
251 b->object.if_version = 0;
252
253 p = strchr(s, ':');
254
255 if (p == NULL) {
256 b->transport = NCA_UNKNOWN;
257 } else {
258 char *type = talloc_strndup(mem_ctx, s, PTR_DIFF(p, s));
259 if (!type) {
260 return NT_STATUS_NO_MEMORY;
261 }
262
263 for (i=0;i<ARRAY_SIZE(transports);i++) {
264 if (strcmp(type, transports[i].name) == 0) {
265 b->transport = transports[i].transport;
266 break;
267 }
268 }
269
270 if (i==ARRAY_SIZE(transports)) {
271 DEBUG(0,("Unknown dcerpc transport '%s'\n", type));
272 return NT_STATUS_INVALID_PARAMETER;
273 }
274
275 talloc_free(type);
276
277 s = p+1;
278 }
279
280 p = strchr(s, '[');
281 if (p) {
282 b->host = talloc_strndup(b, s, PTR_DIFF(p, s));
283 options = talloc_strdup(mem_ctx, p+1);
284 if (options[strlen(options)-1] != ']') {
285 return NT_STATUS_INVALID_PARAMETER;
286 }
287 options[strlen(options)-1] = 0;
288 } else {
289 b->host = talloc_strdup(b, s);
290 options = NULL;
291 }
292 if (!b->host) {
293 return NT_STATUS_NO_MEMORY;
294 }
295
296 b->target_hostname = b->host;
297
298 b->options = NULL;
299 b->flags = 0;
300 b->assoc_group_id = 0;
301 b->endpoint = NULL;
302
303 if (!options) {
304 *b_out = b;
305 return NT_STATUS_OK;
306 }
307
308 comma_count = count_chars(options, ',');
309
310 b->options = talloc_array(b, const char *, comma_count+2);
311 if (!b->options) {
312 return NT_STATUS_NO_MEMORY;
313 }
314
315 for (i=0; (p = strchr(options, ',')); i++) {
316 b->options[i] = talloc_strndup(b, options, PTR_DIFF(p, options));
317 if (!b->options[i]) {
318 return NT_STATUS_NO_MEMORY;
319 }
320 options = p+1;
321 }
322 b->options[i] = options;
323 b->options[i+1] = NULL;
324
325 /* some options are pre-parsed for convenience */
326 for (i=0;b->options[i];i++) {
327 for (j=0;j<ARRAY_SIZE(ncacn_options);j++) {
328 if (strcmp(ncacn_options[j].name, b->options[i]) == 0) {
329 int k;
330 b->flags |= ncacn_options[j].flag;
331 for (k=i;b->options[k];k++) {
332 b->options[k] = b->options[k+1];
333 }
334 i--;
335 break;
336 }
337 }
338 }
339
340 if (b->options[0]) {
341 /* Endpoint is first option */
342 b->endpoint = b->options[0];
343 if (strlen(b->endpoint) == 0) b->endpoint = NULL;
344
345 for (i=0;b->options[i];i++) {
346 b->options[i] = b->options[i+1];
347 }
348 }
349
350 if (b->options[0] == NULL)
351 b->options = NULL;
352
353 *b_out = b;
354 return NT_STATUS_OK;
355}
356
357_PUBLIC_ NTSTATUS dcerpc_floor_get_lhs_data(struct epm_floor *epm_floor, struct ndr_syntax_id *syntax)
358{
359 TALLOC_CTX *mem_ctx = talloc_init("floor_get_lhs_data");
360 struct ndr_pull *ndr = ndr_pull_init_blob(&epm_floor->lhs.lhs_data, mem_ctx);
361 enum ndr_err_code ndr_err;
362 uint16_t if_version=0;
363
364 ndr->flags |= LIBNDR_FLAG_NOALIGN;
365
366 ndr_err = ndr_pull_GUID(ndr, NDR_SCALARS | NDR_BUFFERS, &syntax->uuid);
367 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
368 talloc_free(mem_ctx);
369 return ndr_map_error2ntstatus(ndr_err);
370 }
371
372 ndr_err = ndr_pull_uint16(ndr, NDR_SCALARS, &if_version);
373 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
374 talloc_free(mem_ctx);
375 return ndr_map_error2ntstatus(ndr_err);
376 }
377
378 syntax->if_version = if_version;
379
380 talloc_free(mem_ctx);
381
382 return NT_STATUS_OK;
383}
384
385static DATA_BLOB dcerpc_floor_pack_lhs_data(TALLOC_CTX *mem_ctx, const struct ndr_syntax_id *syntax)
386{
387 struct ndr_push *ndr = ndr_push_init_ctx(mem_ctx);
388
389 ndr->flags |= LIBNDR_FLAG_NOALIGN;
390
391 ndr_push_GUID(ndr, NDR_SCALARS | NDR_BUFFERS, &syntax->uuid);
392 ndr_push_uint16(ndr, NDR_SCALARS, syntax->if_version);
393
394 return ndr_push_blob(ndr);
395}
396
397const char *dcerpc_floor_get_rhs_data(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor)
398{
399 switch (epm_floor->lhs.protocol) {
400 case EPM_PROTOCOL_TCP:
401 if (epm_floor->rhs.tcp.port == 0) return NULL;
402 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.tcp.port);
403
404 case EPM_PROTOCOL_UDP:
405 if (epm_floor->rhs.udp.port == 0) return NULL;
406 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.udp.port);
407
408 case EPM_PROTOCOL_HTTP:
409 if (epm_floor->rhs.http.port == 0) return NULL;
410 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.http.port);
411
412 case EPM_PROTOCOL_IP:
413 return talloc_strdup(mem_ctx, epm_floor->rhs.ip.ipaddr);
414
415 case EPM_PROTOCOL_NCACN:
416 return NULL;
417
418 case EPM_PROTOCOL_NCADG:
419 return NULL;
420
421 case EPM_PROTOCOL_SMB:
422 if (strlen(epm_floor->rhs.smb.unc) == 0) return NULL;
423 return talloc_strdup(mem_ctx, epm_floor->rhs.smb.unc);
424
425 case EPM_PROTOCOL_PIPE:
426 if (strlen(epm_floor->rhs.pipe.path) == 0) return NULL;
427 return talloc_strdup(mem_ctx, epm_floor->rhs.pipe.path);
428
429 case EPM_PROTOCOL_NETBIOS:
430 if (strlen(epm_floor->rhs.netbios.name) == 0) return NULL;
431 return talloc_strdup(mem_ctx, epm_floor->rhs.netbios.name);
432
433 case EPM_PROTOCOL_NCALRPC:
434 return NULL;
435
436 case EPM_PROTOCOL_VINES_SPP:
437 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.vines_spp.port);
438
439 case EPM_PROTOCOL_VINES_IPC:
440 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.vines_ipc.port);
441
442 case EPM_PROTOCOL_STREETTALK:
443 return talloc_strdup(mem_ctx, epm_floor->rhs.streettalk.streettalk);
444
445 case EPM_PROTOCOL_UNIX_DS:
446 if (strlen(epm_floor->rhs.unix_ds.path) == 0) return NULL;
447 return talloc_strdup(mem_ctx, epm_floor->rhs.unix_ds.path);
448
449 case EPM_PROTOCOL_NULL:
450 return NULL;
451
452 default:
453 DEBUG(0,("Unsupported lhs protocol %d\n", epm_floor->lhs.protocol));
454 break;
455 }
456
457 return NULL;
458}
459
460static NTSTATUS dcerpc_floor_set_rhs_data(TALLOC_CTX *mem_ctx,
461 struct epm_floor *epm_floor,
462 const char *data)
463{
464 switch (epm_floor->lhs.protocol) {
465 case EPM_PROTOCOL_TCP:
466 epm_floor->rhs.tcp.port = atoi(data);
467 return NT_STATUS_OK;
468
469 case EPM_PROTOCOL_UDP:
470 epm_floor->rhs.udp.port = atoi(data);
471 return NT_STATUS_OK;
472
473 case EPM_PROTOCOL_HTTP:
474 epm_floor->rhs.http.port = atoi(data);
475 return NT_STATUS_OK;
476
477 case EPM_PROTOCOL_IP:
478 epm_floor->rhs.ip.ipaddr = talloc_strdup(mem_ctx, data);
479 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.ip.ipaddr);
480 return NT_STATUS_OK;
481
482 case EPM_PROTOCOL_NCACN:
483 epm_floor->rhs.ncacn.minor_version = 0;
484 return NT_STATUS_OK;
485
486 case EPM_PROTOCOL_NCADG:
487 epm_floor->rhs.ncadg.minor_version = 0;
488 return NT_STATUS_OK;
489
490 case EPM_PROTOCOL_SMB:
491 epm_floor->rhs.smb.unc = talloc_strdup(mem_ctx, data);
492 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.smb.unc);
493 return NT_STATUS_OK;
494
495 case EPM_PROTOCOL_PIPE:
496 epm_floor->rhs.pipe.path = talloc_strdup(mem_ctx, data);
497 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.pipe.path);
498 return NT_STATUS_OK;
499
500 case EPM_PROTOCOL_NETBIOS:
501 epm_floor->rhs.netbios.name = talloc_strdup(mem_ctx, data);
502 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.netbios.name);
503 return NT_STATUS_OK;
504
505 case EPM_PROTOCOL_NCALRPC:
506 return NT_STATUS_OK;
507
508 case EPM_PROTOCOL_VINES_SPP:
509 epm_floor->rhs.vines_spp.port = atoi(data);
510 return NT_STATUS_OK;
511
512 case EPM_PROTOCOL_VINES_IPC:
513 epm_floor->rhs.vines_ipc.port = atoi(data);
514 return NT_STATUS_OK;
515
516 case EPM_PROTOCOL_STREETTALK:
517 epm_floor->rhs.streettalk.streettalk = talloc_strdup(mem_ctx, data);
518 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.streettalk.streettalk);
519 return NT_STATUS_OK;
520
521 case EPM_PROTOCOL_UNIX_DS:
522 epm_floor->rhs.unix_ds.path = talloc_strdup(mem_ctx, data);
523 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.unix_ds.path);
524 return NT_STATUS_OK;
525
526 case EPM_PROTOCOL_NULL:
527 return NT_STATUS_OK;
528
529 default:
530 DEBUG(0,("Unsupported lhs protocol %d\n", epm_floor->lhs.protocol));
531 break;
532 }
533
534 return NT_STATUS_NOT_SUPPORTED;
535}
536
537enum dcerpc_transport_t dcerpc_transport_by_endpoint_protocol(int prot)
538{
539 int i;
540
541 /* Find a transport that has 'prot' as 4th protocol */
542 for (i=0;i<ARRAY_SIZE(transports);i++) {
543 if (transports[i].num_protocols >= 2 &&
544 transports[i].protseq[1] == prot) {
545 return transports[i].transport;
546 }
547 }
548
549 /* Unknown transport */
550 return (unsigned int)-1;
551}
552
553_PUBLIC_ enum dcerpc_transport_t dcerpc_transport_by_tower(struct epm_tower *tower)
554{
555 int i;
556
557 /* Find a transport that matches this tower */
558 for (i=0;i<ARRAY_SIZE(transports);i++) {
559 int j;
560 if (transports[i].num_protocols != tower->num_floors - 2) {
561 continue;
562 }
563
564 for (j = 0; j < transports[i].num_protocols; j++) {
565 if (transports[i].protseq[j] != tower->floors[j+2].lhs.protocol) {
566 break;
567 }
568 }
569
570 if (j == transports[i].num_protocols) {
571 return transports[i].transport;
572 }
573 }
574
575 /* Unknown transport */
576 return (unsigned int)-1;
577}
578
579_PUBLIC_ NTSTATUS dcerpc_binding_from_tower(TALLOC_CTX *mem_ctx,
580 struct epm_tower *tower,
581 struct dcerpc_binding **b_out)
582{
583 NTSTATUS status;
584 struct dcerpc_binding *binding;
585
586 binding = talloc(mem_ctx, struct dcerpc_binding);
587 NT_STATUS_HAVE_NO_MEMORY(binding);
588
589 ZERO_STRUCT(binding->object);
590 binding->options = NULL;
591 binding->host = NULL;
592 binding->target_hostname = NULL;
593 binding->flags = 0;
594 binding->assoc_group_id = 0;
595
596 binding->transport = dcerpc_transport_by_tower(tower);
597
598 if (binding->transport == (unsigned int)-1) {
599 return NT_STATUS_NOT_SUPPORTED;
600 }
601
602 if (tower->num_floors < 1) {
603 return NT_STATUS_OK;
604 }
605
606 /* Set object uuid */
607 status = dcerpc_floor_get_lhs_data(&tower->floors[0], &binding->object);
608
609 if (!NT_STATUS_IS_OK(status)) {
610 DEBUG(1, ("Error pulling object uuid and version: %s", nt_errstr(status)));
611 return status;
612 }
613
614 /* Ignore floor 1, it contains the NDR version info */
615
616 binding->options = NULL;
617
618 /* Set endpoint */
619 if (tower->num_floors >= 4) {
620 binding->endpoint = dcerpc_floor_get_rhs_data(mem_ctx, &tower->floors[3]);
621 } else {
622 binding->endpoint = NULL;
623 }
624
625 /* Set network address */
626 if (tower->num_floors >= 5) {
627 binding->host = dcerpc_floor_get_rhs_data(mem_ctx, &tower->floors[4]);
628 NT_STATUS_HAVE_NO_MEMORY(binding->host);
629 binding->target_hostname = binding->host;
630 }
631 *b_out = binding;
632 return NT_STATUS_OK;
633}
634
635_PUBLIC_ NTSTATUS dcerpc_binding_build_tower(TALLOC_CTX *mem_ctx, struct dcerpc_binding *binding, struct epm_tower *tower)
636{
637 const enum epm_protocol *protseq = NULL;
638 int num_protocols = -1, i;
639 NTSTATUS status;
640
641 /* Find transport */
642 for (i=0;i<ARRAY_SIZE(transports);i++) {
643 if (transports[i].transport == binding->transport) {
644 protseq = transports[i].protseq;
645 num_protocols = transports[i].num_protocols;
646 break;
647 }
648 }
649
650 if (num_protocols == -1) {
651 DEBUG(0, ("Unable to find transport with id '%d'\n", binding->transport));
652 return NT_STATUS_UNSUCCESSFUL;
653 }
654
655 tower->num_floors = 2 + num_protocols;
656 tower->floors = talloc_array(mem_ctx, struct epm_floor, tower->num_floors);
657
658 /* Floor 0 */
659 tower->floors[0].lhs.protocol = EPM_PROTOCOL_UUID;
660
661 tower->floors[0].lhs.lhs_data = dcerpc_floor_pack_lhs_data(mem_ctx, &binding->object);
662
663 tower->floors[0].rhs.uuid.unknown = data_blob_talloc_zero(mem_ctx, 2);
664
665 /* Floor 1 */
666 tower->floors[1].lhs.protocol = EPM_PROTOCOL_UUID;
667
668 tower->floors[1].lhs.lhs_data = dcerpc_floor_pack_lhs_data(mem_ctx,
669 &ndr_transfer_syntax);
670
671 tower->floors[1].rhs.uuid.unknown = data_blob_talloc_zero(mem_ctx, 2);
672
673 /* Floor 2 to num_protocols */
674 for (i = 0; i < num_protocols; i++) {
675 tower->floors[2 + i].lhs.protocol = protseq[i];
676 tower->floors[2 + i].lhs.lhs_data = data_blob_talloc(mem_ctx, NULL, 0);
677 ZERO_STRUCT(tower->floors[2 + i].rhs);
678 dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[2 + i], "");
679 }
680
681 /* The 4th floor contains the endpoint */
682 if (num_protocols >= 2 && binding->endpoint) {
683 status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[3], binding->endpoint);
684 if (NT_STATUS_IS_ERR(status)) {
685 return status;
686 }
687 }
688
689 /* The 5th contains the network address */
690 if (num_protocols >= 3 && binding->host) {
691 if (is_ipaddress(binding->host)) {
692 status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[4],
693 binding->host);
694 } else {
695 /* note that we don't attempt to resolve the
696 name here - when we get a hostname here we
697 are in the client code, and want to put in
698 a wildcard all-zeros IP for the server to
699 fill in */
700 status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[4],
701 "0.0.0.0");
702 }
703 if (NT_STATUS_IS_ERR(status)) {
704 return status;
705 }
706 }
707
708 return NT_STATUS_OK;
709}
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