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s3: Replace cli_negprot_sendsync() by cli_negprot_send()
[Samba.git] / librpc / rpc / binding.c
blob422537e1f4ece7b87cde6a4d41349e4d425987c6
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 "../../lib/util/util_net.h"
27 #include "librpc/gen_ndr/ndr_epmapper.h"
28 #include "librpc/gen_ndr/ndr_misc.h"
29 #include "librpc/rpc/dcerpc.h"
30 #include "rpc_common.h"
31
32 #undef strcasecmp
33 #undef strncasecmp
34
35 #define MAX_PROTSEQ 10
36
37 static const struct {
38 const char *name;
39 enum dcerpc_transport_t transport;
40 int num_protocols;
41 enum epm_protocol protseq[MAX_PROTSEQ];
42 } transports[] = {
43 { "ncacn_np", NCACN_NP, 3,
44 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_SMB, EPM_PROTOCOL_NETBIOS }},
45 { "ncacn_ip_tcp", NCACN_IP_TCP, 3,
46 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_TCP, EPM_PROTOCOL_IP } },
47 { "ncacn_http", NCACN_HTTP, 3,
48 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_HTTP, EPM_PROTOCOL_IP } },
49 { "ncadg_ip_udp", NCACN_IP_UDP, 3,
50 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UDP, EPM_PROTOCOL_IP } },
51 { "ncalrpc", NCALRPC, 2,
52 { EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_NAMED_PIPE } },
53 { "ncacn_unix_stream", NCACN_UNIX_STREAM, 2,
54 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_UNIX_DS } },
55 { "ncadg_unix_dgram", NCADG_UNIX_DGRAM, 2,
56 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UNIX_DS } },
57 { "ncacn_at_dsp", NCACN_AT_DSP, 3,
58 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DSP } },
59 { "ncadg_at_ddp", NCADG_AT_DDP, 3,
60 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DDP } },
61 { "ncacn_vns_ssp", NCACN_VNS_SPP, 3,
62 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_SPP } },
63 { "ncacn_vns_ipc", NCACN_VNS_IPC, 3,
64 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_IPC }, },
65 { "ncadg_ipx", NCADG_IPX, 2,
66 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_IPX },
67 },
68 { "ncacn_spx", NCACN_SPX, 3,
69 /* I guess some MS programmer confused the identifier for
70 * EPM_PROTOCOL_UUID (0x0D or 13) with the one for
71 * EPM_PROTOCOL_SPX (0x13) here. -- jelmer*/
72 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_UUID },
73 },
74 };
75
76 static const struct {
77 const char *name;
78 uint32_t flag;
79 } ncacn_options[] = {
80 {"sign", DCERPC_SIGN},
81 {"seal", DCERPC_SEAL},
82 {"connect", DCERPC_CONNECT},
83 {"spnego", DCERPC_AUTH_SPNEGO},
84 {"ntlm", DCERPC_AUTH_NTLM},
85 {"krb5", DCERPC_AUTH_KRB5},
86 {"validate", DCERPC_DEBUG_VALIDATE_BOTH},
87 {"print", DCERPC_DEBUG_PRINT_BOTH},
88 {"padcheck", DCERPC_DEBUG_PAD_CHECK},
89 {"bigendian", DCERPC_PUSH_BIGENDIAN},
90 {"smb2", DCERPC_SMB2},
91 {"hdrsign", DCERPC_HEADER_SIGNING},
92 {"ndr64", DCERPC_NDR64},
93 {"localaddress", DCERPC_LOCALADDRESS}
94 };
95
96 const char *epm_floor_string(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor)
97 {
98 struct ndr_syntax_id syntax;
99 NTSTATUS status;
100
101 switch(epm_floor->lhs.protocol) {
102 case EPM_PROTOCOL_UUID:
103 status = dcerpc_floor_get_lhs_data(epm_floor, &syntax);
104 if (NT_STATUS_IS_OK(status)) {
105 /* lhs is used: UUID */
106 char *uuidstr;
107
108 if (GUID_equal(&syntax.uuid, &ndr_transfer_syntax.uuid)) {
109 return "NDR";
110 }
111
112 if (GUID_equal(&syntax.uuid, &ndr64_transfer_syntax.uuid)) {
113 return "NDR64";
114 }
115
116 uuidstr = GUID_string(mem_ctx, &syntax.uuid);
117
118 return talloc_asprintf(mem_ctx, " uuid %s/0x%02x", uuidstr, syntax.if_version);
119 } else { /* IPX */
120 return talloc_asprintf(mem_ctx, "IPX:%s",
121 data_blob_hex_string_upper(mem_ctx, &epm_floor->rhs.uuid.unknown));
122 }
123
124 case EPM_PROTOCOL_NCACN:
125 return "RPC-C";
126
127 case EPM_PROTOCOL_NCADG:
128 return "RPC";
129
130 case EPM_PROTOCOL_NCALRPC:
131 return "NCALRPC";
132
133 case EPM_PROTOCOL_DNET_NSP:
134 return "DNET/NSP";
135
136 case EPM_PROTOCOL_IP:
137 return talloc_asprintf(mem_ctx, "IP:%s", epm_floor->rhs.ip.ipaddr);
138
139 case EPM_PROTOCOL_NAMED_PIPE:
140 return talloc_asprintf(mem_ctx, "NAMED-PIPE:%s", epm_floor->rhs.named_pipe.path);
141
142 case EPM_PROTOCOL_SMB:
143 return talloc_asprintf(mem_ctx, "SMB:%s", epm_floor->rhs.smb.unc);
144
145 case EPM_PROTOCOL_UNIX_DS:
146 return talloc_asprintf(mem_ctx, "Unix:%s", epm_floor->rhs.unix_ds.path);
147
148 case EPM_PROTOCOL_NETBIOS:
149 return talloc_asprintf(mem_ctx, "NetBIOS:%s", epm_floor->rhs.netbios.name);
150
151 case EPM_PROTOCOL_NETBEUI:
152 return "NETBeui";
153
154 case EPM_PROTOCOL_SPX:
155 return "SPX";
156
157 case EPM_PROTOCOL_NB_IPX:
158 return "NB_IPX";
159
160 case EPM_PROTOCOL_HTTP:
161 return talloc_asprintf(mem_ctx, "HTTP:%d", epm_floor->rhs.http.port);
162
163 case EPM_PROTOCOL_TCP:
164 return talloc_asprintf(mem_ctx, "TCP:%d", epm_floor->rhs.tcp.port);
165
166 case EPM_PROTOCOL_UDP:
167 return talloc_asprintf(mem_ctx, "UDP:%d", epm_floor->rhs.udp.port);
168
169 default:
170 return talloc_asprintf(mem_ctx, "UNK(%02x):", epm_floor->lhs.protocol);
171 }
172 }
173
174
175 /*
176 form a binding string from a binding structure
177 */
178 _PUBLIC_ char *dcerpc_binding_string(TALLOC_CTX *mem_ctx, const struct dcerpc_binding *b)
179 {
180 char *s = talloc_strdup(mem_ctx, "");
181 int i;
182 const char *t_name = NULL;
183
184 if (b->transport != NCA_UNKNOWN) {
185 t_name = derpc_transport_string_by_transport(b->transport);
186 if (!t_name) {
187 return NULL;
188 }
189 }
190
191 if (!GUID_all_zero(&b->object.uuid)) {
192 s = talloc_asprintf(s, "%s@",
193 GUID_string(mem_ctx, &b->object.uuid));
194 }
195
196 if (t_name != NULL) {
197 s = talloc_asprintf_append_buffer(s, "%s:", t_name);
198 if (s == NULL) {
199 return NULL;
200 }
201 }
202
203 if (b->host) {
204 s = talloc_asprintf_append_buffer(s, "%s", b->host);
205 }
206
207 if (!b->endpoint && !b->options && !b->flags) {
208 return s;
209 }
210
211 s = talloc_asprintf_append_buffer(s, "[");
212
213 if (b->endpoint) {
214 s = talloc_asprintf_append_buffer(s, "%s", b->endpoint);
215 }
216
217 /* this is a *really* inefficent way of dealing with strings,
218 but this is rarely called and the strings are always short,
219 so I don't care */
220 for (i=0;b->options && b->options[i];i++) {
221 s = talloc_asprintf_append_buffer(s, ",%s", b->options[i]);
222 if (!s) return NULL;
223 }
224
225 for (i=0;i<ARRAY_SIZE(ncacn_options);i++) {
226 if (b->flags & ncacn_options[i].flag) {
227 if (ncacn_options[i].flag == DCERPC_LOCALADDRESS && b->localaddress) {
228 s = talloc_asprintf_append_buffer(s, ",%s=%s", ncacn_options[i].name,
229 b->localaddress);
230 } else {
231 s = talloc_asprintf_append_buffer(s, ",%s", ncacn_options[i].name);
232 }
233 if (!s) return NULL;
234 }
235 }
236
237 s = talloc_asprintf_append_buffer(s, "]");
238
239 return s;
240 }
241
242 /*
243 parse a binding string into a dcerpc_binding structure
244 */
245 _PUBLIC_ NTSTATUS dcerpc_parse_binding(TALLOC_CTX *mem_ctx, const char *s, struct dcerpc_binding **b_out)
246 {
247 struct dcerpc_binding *b;
248 char *options;
249 char *p;
250 int i, j, comma_count;
251
252 b = talloc_zero(mem_ctx, struct dcerpc_binding);
253 if (!b) {
254 return NT_STATUS_NO_MEMORY;
255 }
256
257 p = strchr(s, '@');
258
259 if (p && PTR_DIFF(p, s) == 36) { /* 36 is the length of a UUID */
260 NTSTATUS status;
261 DATA_BLOB blob = data_blob(s, 36);
262 status = GUID_from_data_blob(&blob, &b->object.uuid);
263
264 if (NT_STATUS_IS_ERR(status)) {
265 DEBUG(0, ("Failed parsing UUID\n"));
266 return status;
267 }
268
269 s = p + 1;
270 } else {
271 ZERO_STRUCT(b->object);
272 }
273
274 b->object.if_version = 0;
275
276 p = strchr(s, ':');
277
278 if (p == NULL) {
279 b->transport = NCA_UNKNOWN;
280 } else {
281 char *type = talloc_strndup(mem_ctx, s, PTR_DIFF(p, s));
282 if (!type) {
283 return NT_STATUS_NO_MEMORY;
284 }
285
286 for (i=0;i<ARRAY_SIZE(transports);i++) {
287 if (strcasecmp(type, transports[i].name) == 0) {
288 b->transport = transports[i].transport;
289 break;
290 }
291 }
292
293 if (i==ARRAY_SIZE(transports)) {
294 DEBUG(0,("Unknown dcerpc transport '%s'\n", type));
295 return NT_STATUS_INVALID_PARAMETER;
296 }
297
298 talloc_free(type);
299
300 s = p+1;
301 }
302
303 p = strchr(s, '[');
304 if (p) {
305 b->host = talloc_strndup(b, s, PTR_DIFF(p, s));
306 options = talloc_strdup(mem_ctx, p+1);
307 if (options[strlen(options)-1] != ']') {
308 return NT_STATUS_INVALID_PARAMETER;
309 }
310 options[strlen(options)-1] = 0;
311 } else {
312 b->host = talloc_strdup(b, s);
313 options = NULL;
314 }
315 if (!b->host) {
316 return NT_STATUS_NO_MEMORY;
317 }
318
319 b->target_hostname = b->host;
320
321 b->options = NULL;
322 b->flags = 0;
323 b->assoc_group_id = 0;
324 b->endpoint = NULL;
325 b->localaddress = NULL;
326
327 if (!options) {
328 *b_out = b;
329 return NT_STATUS_OK;
330 }
331
332 comma_count = count_chars(options, ',');
333
334 b->options = talloc_array(b, const char *, comma_count+2);
335 if (!b->options) {
336 return NT_STATUS_NO_MEMORY;
337 }
338
339 for (i=0; (p = strchr(options, ',')); i++) {
340 b->options[i] = talloc_strndup(b, options, PTR_DIFF(p, options));
341 if (!b->options[i]) {
342 return NT_STATUS_NO_MEMORY;
343 }
344 options = p+1;
345 }
346 b->options[i] = options;
347 b->options[i+1] = NULL;
348
349 /* some options are pre-parsed for convenience */
350 for (i=0;b->options[i];i++) {
351 for (j=0;j<ARRAY_SIZE(ncacn_options);j++) {
352 size_t opt_len = strlen(ncacn_options[j].name);
353 if (strncasecmp(ncacn_options[j].name, b->options[i], opt_len) == 0) {
354 int k;
355 char c = b->options[i][opt_len];
356
357 if (ncacn_options[j].flag == DCERPC_LOCALADDRESS && c == '=') {
358 b->localaddress = talloc_strdup(b, &b->options[i][opt_len+1]);
359 } else if (c != 0) {
360 continue;
361 }
362
363 b->flags |= ncacn_options[j].flag;
364 for (k=i;b->options[k];k++) {
365 b->options[k] = b->options[k+1];
366 }
367 i--;
368 break;
369 }
370 }
371 }
372
373 if (b->options[0]) {
374 /* Endpoint is first option */
375 b->endpoint = b->options[0];
376 if (strlen(b->endpoint) == 0) b->endpoint = NULL;
377
378 for (i=0;b->options[i];i++) {
379 b->options[i] = b->options[i+1];
380 }
381 }
382
383 if (b->options[0] == NULL)
384 b->options = NULL;
385
386 *b_out = b;
387 return NT_STATUS_OK;
388 }
389
390 _PUBLIC_ NTSTATUS dcerpc_floor_get_lhs_data(const struct epm_floor *epm_floor,
391 struct ndr_syntax_id *syntax)
392 {
393 TALLOC_CTX *mem_ctx = talloc_init("floor_get_lhs_data");
394 struct ndr_pull *ndr;
395 enum ndr_err_code ndr_err;
396 uint16_t if_version=0;
397
398 ndr = ndr_pull_init_blob(&epm_floor->lhs.lhs_data, mem_ctx);
399 if (ndr == NULL) {
400 talloc_free(mem_ctx);
401 return NT_STATUS_NO_MEMORY;
402 }
403 ndr->flags |= LIBNDR_FLAG_NOALIGN;
404
405 ndr_err = ndr_pull_GUID(ndr, NDR_SCALARS | NDR_BUFFERS, &syntax->uuid);
406 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
407 talloc_free(mem_ctx);
408 return ndr_map_error2ntstatus(ndr_err);
409 }
410
411 ndr_err = ndr_pull_uint16(ndr, NDR_SCALARS, &if_version);
412 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
413 talloc_free(mem_ctx);
414 return ndr_map_error2ntstatus(ndr_err);
415 }
416
417 syntax->if_version = if_version;
418
419 talloc_free(mem_ctx);
420
421 return NT_STATUS_OK;
422 }
423
424 static DATA_BLOB dcerpc_floor_pack_lhs_data(TALLOC_CTX *mem_ctx, const struct ndr_syntax_id *syntax)
425 {
426 DATA_BLOB blob;
427 struct ndr_push *ndr = ndr_push_init_ctx(mem_ctx);
428
429 ndr->flags |= LIBNDR_FLAG_NOALIGN;
430
431 ndr_push_GUID(ndr, NDR_SCALARS | NDR_BUFFERS, &syntax->uuid);
432 ndr_push_uint16(ndr, NDR_SCALARS, syntax->if_version);
433
434 blob = ndr_push_blob(ndr);
435 talloc_steal(mem_ctx, blob.data);
436 talloc_free(ndr);
437 return blob;
438 }
439
440 static DATA_BLOB dcerpc_floor_pack_rhs_if_version_data(TALLOC_CTX *mem_ctx, const struct ndr_syntax_id *syntax)
441 {
442 DATA_BLOB blob;
443 struct ndr_push *ndr = ndr_push_init_ctx(mem_ctx);
444
445 ndr->flags |= LIBNDR_FLAG_NOALIGN;
446
447 ndr_push_uint16(ndr, NDR_SCALARS, syntax->if_version >> 16);
448
449 blob = ndr_push_blob(ndr);
450 talloc_steal(mem_ctx, blob.data);
451 talloc_free(ndr);
452 return blob;
453 }
454
455 const char *dcerpc_floor_get_rhs_data(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor)
456 {
457 switch (epm_floor->lhs.protocol) {
458 case EPM_PROTOCOL_TCP:
459 if (epm_floor->rhs.tcp.port == 0) return NULL;
460 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.tcp.port);
461
462 case EPM_PROTOCOL_UDP:
463 if (epm_floor->rhs.udp.port == 0) return NULL;
464 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.udp.port);
465
466 case EPM_PROTOCOL_HTTP:
467 if (epm_floor->rhs.http.port == 0) return NULL;
468 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.http.port);
469
470 case EPM_PROTOCOL_IP:
471 return talloc_strdup(mem_ctx, epm_floor->rhs.ip.ipaddr);
472
473 case EPM_PROTOCOL_NCACN:
474 return NULL;
475
476 case EPM_PROTOCOL_NCADG:
477 return NULL;
478
479 case EPM_PROTOCOL_SMB:
480 if (strlen(epm_floor->rhs.smb.unc) == 0) return NULL;
481 return talloc_strdup(mem_ctx, epm_floor->rhs.smb.unc);
482
483 case EPM_PROTOCOL_NAMED_PIPE:
484 if (strlen(epm_floor->rhs.named_pipe.path) == 0) return NULL;
485 return talloc_strdup(mem_ctx, epm_floor->rhs.named_pipe.path);
486
487 case EPM_PROTOCOL_NETBIOS:
488 if (strlen(epm_floor->rhs.netbios.name) == 0) return NULL;
489 return talloc_strdup(mem_ctx, epm_floor->rhs.netbios.name);
490
491 case EPM_PROTOCOL_NCALRPC:
492 return NULL;
493
494 case EPM_PROTOCOL_VINES_SPP:
495 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.vines_spp.port);
496
497 case EPM_PROTOCOL_VINES_IPC:
498 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.vines_ipc.port);
499
500 case EPM_PROTOCOL_STREETTALK:
501 return talloc_strdup(mem_ctx, epm_floor->rhs.streettalk.streettalk);
502
503 case EPM_PROTOCOL_UNIX_DS:
504 if (strlen(epm_floor->rhs.unix_ds.path) == 0) return NULL;
505 return talloc_strdup(mem_ctx, epm_floor->rhs.unix_ds.path);
506
507 case EPM_PROTOCOL_NULL:
508 return NULL;
509
510 default:
511 DEBUG(0,("Unsupported lhs protocol %d\n", epm_floor->lhs.protocol));
512 break;
513 }
514
515 return NULL;
516 }
517
518 static NTSTATUS dcerpc_floor_set_rhs_data(TALLOC_CTX *mem_ctx,
519 struct epm_floor *epm_floor,
520 const char *data)
521 {
522 switch (epm_floor->lhs.protocol) {
523 case EPM_PROTOCOL_TCP:
524 epm_floor->rhs.tcp.port = atoi(data);
525 return NT_STATUS_OK;
526
527 case EPM_PROTOCOL_UDP:
528 epm_floor->rhs.udp.port = atoi(data);
529 return NT_STATUS_OK;
530
531 case EPM_PROTOCOL_HTTP:
532 epm_floor->rhs.http.port = atoi(data);
533 return NT_STATUS_OK;
534
535 case EPM_PROTOCOL_IP:
536 epm_floor->rhs.ip.ipaddr = talloc_strdup(mem_ctx, data);
537 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.ip.ipaddr);
538 return NT_STATUS_OK;
539
540 case EPM_PROTOCOL_NCACN:
541 epm_floor->rhs.ncacn.minor_version = 0;
542 return NT_STATUS_OK;
543
544 case EPM_PROTOCOL_NCADG:
545 epm_floor->rhs.ncadg.minor_version = 0;
546 return NT_STATUS_OK;
547
548 case EPM_PROTOCOL_SMB:
549 epm_floor->rhs.smb.unc = talloc_strdup(mem_ctx, data);
550 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.smb.unc);
551 return NT_STATUS_OK;
552
553 case EPM_PROTOCOL_NAMED_PIPE:
554 epm_floor->rhs.named_pipe.path = talloc_strdup(mem_ctx, data);
555 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.named_pipe.path);
556 return NT_STATUS_OK;
557
558 case EPM_PROTOCOL_NETBIOS:
559 epm_floor->rhs.netbios.name = talloc_strdup(mem_ctx, data);
560 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.netbios.name);
561 return NT_STATUS_OK;
562
563 case EPM_PROTOCOL_NCALRPC:
564 return NT_STATUS_OK;
565
566 case EPM_PROTOCOL_VINES_SPP:
567 epm_floor->rhs.vines_spp.port = atoi(data);
568 return NT_STATUS_OK;
569
570 case EPM_PROTOCOL_VINES_IPC:
571 epm_floor->rhs.vines_ipc.port = atoi(data);
572 return NT_STATUS_OK;
573
574 case EPM_PROTOCOL_STREETTALK:
575 epm_floor->rhs.streettalk.streettalk = talloc_strdup(mem_ctx, data);
576 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.streettalk.streettalk);
577 return NT_STATUS_OK;
578
579 case EPM_PROTOCOL_UNIX_DS:
580 epm_floor->rhs.unix_ds.path = talloc_strdup(mem_ctx, data);
581 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.unix_ds.path);
582 return NT_STATUS_OK;
583
584 case EPM_PROTOCOL_NULL:
585 return NT_STATUS_OK;
586
587 default:
588 DEBUG(0,("Unsupported lhs protocol %d\n", epm_floor->lhs.protocol));
589 break;
590 }
591
592 return NT_STATUS_NOT_SUPPORTED;
593 }
594
595 enum dcerpc_transport_t dcerpc_transport_by_endpoint_protocol(int prot)
596 {
597 int i;
598
599 /* Find a transport that has 'prot' as 4th protocol */
600 for (i=0;i<ARRAY_SIZE(transports);i++) {
601 if (transports[i].num_protocols >= 2 &&
602 transports[i].protseq[1] == prot) {
603 return transports[i].transport;
604 }
605 }
606
607 /* Unknown transport */
608 return (unsigned int)-1;
609 }
610
611 _PUBLIC_ enum dcerpc_transport_t dcerpc_transport_by_tower(const struct epm_tower *tower)
612 {
613 int i;
614
615 /* Find a transport that matches this tower */
616 for (i=0;i<ARRAY_SIZE(transports);i++) {
617 int j;
618 if (transports[i].num_protocols != tower->num_floors - 2) {
619 continue;
620 }
621
622 for (j = 0; j < transports[i].num_protocols; j++) {
623 if (transports[i].protseq[j] != tower->floors[j+2].lhs.protocol) {
624 break;
625 }
626 }
627
628 if (j == transports[i].num_protocols) {
629 return transports[i].transport;
630 }
631 }
632
633 /* Unknown transport */
634 return (unsigned int)-1;
635 }
636
637 _PUBLIC_ const char *derpc_transport_string_by_transport(enum dcerpc_transport_t t)
638 {
639 int i;
640
641 for (i=0; i<ARRAY_SIZE(transports); i++) {
642 if (t == transports[i].transport) {
643 return transports[i].name;
644 }
645 }
646 return NULL;
647 }
648
649 _PUBLIC_ NTSTATUS dcerpc_binding_from_tower(TALLOC_CTX *mem_ctx,
650 struct epm_tower *tower,
651 struct dcerpc_binding **b_out)
652 {
653 NTSTATUS status;
654 struct dcerpc_binding *binding;
655
656 /*
657 * A tower needs to have at least 4 floors to carry useful
658 * information. Floor 3 is the transport identifier which defines
659 * how many floors are required at least.
660 */
661 if (tower->num_floors < 4) {
662 return NT_STATUS_INVALID_PARAMETER;
663 }
664
665 binding = talloc_zero(mem_ctx, struct dcerpc_binding);
666 NT_STATUS_HAVE_NO_MEMORY(binding);
667
668 ZERO_STRUCT(binding->object);
669 binding->options = NULL;
670 binding->host = NULL;
671 binding->target_hostname = NULL;
672 binding->flags = 0;
673 binding->assoc_group_id = 0;
674
675 binding->transport = dcerpc_transport_by_tower(tower);
676
677 if (binding->transport == (unsigned int)-1) {
678 return NT_STATUS_NOT_SUPPORTED;
679 }
680
681 /* Set object uuid */
682 status = dcerpc_floor_get_lhs_data(&tower->floors[0], &binding->object);
683
684 if (!NT_STATUS_IS_OK(status)) {
685 DEBUG(1, ("Error pulling object uuid and version: %s", nt_errstr(status)));
686 return status;
687 }
688
689 /* Ignore floor 1, it contains the NDR version info */
690
691 binding->options = NULL;
692
693 /* Set endpoint */
694 if (tower->num_floors >= 4) {
695 binding->endpoint = dcerpc_floor_get_rhs_data(binding, &tower->floors[3]);
696 } else {
697 binding->endpoint = NULL;
698 }
699
700 /* Set network address */
701 if (tower->num_floors >= 5) {
702 binding->host = dcerpc_floor_get_rhs_data(binding, &tower->floors[4]);
703 NT_STATUS_HAVE_NO_MEMORY(binding->host);
704 binding->target_hostname = binding->host;
705 }
706 *b_out = binding;
707 return NT_STATUS_OK;
708 }
709
710 _PUBLIC_ struct dcerpc_binding *dcerpc_binding_dup(TALLOC_CTX *mem_ctx,
711 const struct dcerpc_binding *b)
712 {
713 struct dcerpc_binding *n;
714 uint32_t count;
715
716 n = talloc_zero(mem_ctx, struct dcerpc_binding);
717 if (n == NULL) {
718 return NULL;
719 }
720
721 n->transport = b->transport;
722 n->object = b->object;
723 n->flags = b->flags;
724 n->assoc_group_id = b->assoc_group_id;
725
726 if (b->host != NULL) {
727 n->host = talloc_strdup(n, b->host);
728 if (n->host == NULL) {
729 talloc_free(n);
730 return NULL;
731 }
732 }
733
734 if (b->target_hostname != NULL) {
735 n->target_hostname = talloc_strdup(n, b->target_hostname);
736 if (n->target_hostname == NULL) {
737 talloc_free(n);
738 return NULL;
739 }
740 }
741
742 if (b->target_principal != NULL) {
743 n->target_principal = talloc_strdup(n, b->target_principal);
744 if (n->target_principal == NULL) {
745 talloc_free(n);
746 return NULL;
747 }
748 }
749
750 if (b->localaddress != NULL) {
751 n->localaddress = talloc_strdup(n, b->localaddress);
752 if (n->localaddress == NULL) {
753 talloc_free(n);
754 return NULL;
755 }
756 }
757
758 if (b->endpoint != NULL) {
759 n->endpoint = talloc_strdup(n, b->endpoint);
760 if (n->endpoint == NULL) {
761 talloc_free(n);
762 return NULL;
763 }
764 }
765
766 for (count = 0; b->options && b->options[count]; count++);
767
768 if (count > 0) {
769 uint32_t i;
770
771 n->options = talloc_array(n, const char *, count + 1);
772 if (n->options == NULL) {
773 talloc_free(n);
774 return NULL;
775 }
776
777 for (i = 0; i < count; i++) {
778 n->options[i] = talloc_strdup(n->options, b->options[i]);
779 if (n->options[i] == NULL) {
780 talloc_free(n);
781 return NULL;
782 }
783 }
784 n->options[count] = NULL;
785 }
786
787 return n;
788 }
789
790 _PUBLIC_ NTSTATUS dcerpc_binding_build_tower(TALLOC_CTX *mem_ctx,
791 const struct dcerpc_binding *binding,
792 struct epm_tower *tower)
793 {
794 const enum epm_protocol *protseq = NULL;
795 int num_protocols = -1, i;
796 NTSTATUS status;
797
798 /* Find transport */
799 for (i=0;i<ARRAY_SIZE(transports);i++) {
800 if (transports[i].transport == binding->transport) {
801 protseq = transports[i].protseq;
802 num_protocols = transports[i].num_protocols;
803 break;
804 }
805 }
806
807 if (num_protocols == -1) {
808 DEBUG(0, ("Unable to find transport with id '%d'\n", binding->transport));
809 return NT_STATUS_UNSUCCESSFUL;
810 }
811
812 tower->num_floors = 2 + num_protocols;
813 tower->floors = talloc_array(mem_ctx, struct epm_floor, tower->num_floors);
814
815 /* Floor 0 */
816 tower->floors[0].lhs.protocol = EPM_PROTOCOL_UUID;
817
818 tower->floors[0].lhs.lhs_data = dcerpc_floor_pack_lhs_data(tower->floors, &binding->object);
819
820 tower->floors[0].rhs.uuid.unknown = dcerpc_floor_pack_rhs_if_version_data(tower->floors, &binding->object);
821
822 /* Floor 1 */
823 tower->floors[1].lhs.protocol = EPM_PROTOCOL_UUID;
824
825 tower->floors[1].lhs.lhs_data = dcerpc_floor_pack_lhs_data(tower->floors,
826 &ndr_transfer_syntax);
827
828 tower->floors[1].rhs.uuid.unknown = data_blob_talloc_zero(tower->floors, 2);
829
830 /* Floor 2 to num_protocols */
831 for (i = 0; i < num_protocols; i++) {
832 tower->floors[2 + i].lhs.protocol = protseq[i];
833 tower->floors[2 + i].lhs.lhs_data = data_blob_talloc(tower->floors, NULL, 0);
834 ZERO_STRUCT(tower->floors[2 + i].rhs);
835 dcerpc_floor_set_rhs_data(tower->floors, &tower->floors[2 + i], "");
836 }
837
838 /* The 4th floor contains the endpoint */
839 if (num_protocols >= 2 && binding->endpoint) {
840 status = dcerpc_floor_set_rhs_data(tower->floors, &tower->floors[3], binding->endpoint);
841 if (NT_STATUS_IS_ERR(status)) {
842 return status;
843 }
844 }
845
846 /* The 5th contains the network address */
847 if (num_protocols >= 3 && binding->host) {
848 if (is_ipaddress(binding->host) ||
849 (binding->host[0] == '\\' && binding->host[1] == '\\')) {
850 status = dcerpc_floor_set_rhs_data(tower->floors, &tower->floors[4],
851 binding->host);
852 } else {
853 /* note that we don't attempt to resolve the
854 name here - when we get a hostname here we
855 are in the client code, and want to put in
856 a wildcard all-zeros IP for the server to
857 fill in */
858 status = dcerpc_floor_set_rhs_data(tower->floors, &tower->floors[4],
859 "0.0.0.0");
860 }
861 if (NT_STATUS_IS_ERR(status)) {
862 return status;
863 }
864 }
865
866 return NT_STATUS_OK;
867 }
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