source/librpc/rpc/dcerpc_util.c

   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
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 */
  23
  24 #include "includes.h"
  25 #include "system/network.h"
  26 #include "librpc/gen_ndr/ndr_epmapper.h"
  27
  28 /*
  29   find the pipe name for a local IDL interface
  30 */
  31 const char *idl_pipe_name(const char *uuid, uint32_t if_version)
  32 {
  33         const struct dcerpc_interface_list *l;
  34         for (l=librpc_dcerpc_pipes();l;l=l->next) {
  35                 if (strcasecmp(l->table->uuid, uuid) == 0 &&
  36                     l->table->if_version == if_version) {
  37                         return l->table->name;
  38                 }
  39         }
  40         return "UNKNOWN";
  41 }
  42
  43 /*
  44   find the number of calls defined by local IDL
  45 */
  46 int idl_num_calls(const char *uuid, uint32_t if_version)
  47 {
  48         const struct dcerpc_interface_list *l;
  49         for (l=librpc_dcerpc_pipes();l;l=l->next){
  50                 if (strcasecmp(l->table->uuid, uuid) == 0 &&
  51                     l->table->if_version == if_version) {
  52                         return l->table->num_calls;
  53                 }
  54         }
  55         return -1;
  56 }
  57
  58
  59 /*
  60   find a dcerpc interface by name
  61 */
  62 const struct dcerpc_interface_table *idl_iface_by_name(const char *name)
  63 {
  64         const struct dcerpc_interface_list *l;
  65         for (l=librpc_dcerpc_pipes();l;l=l->next) {
  66                 if (strcasecmp(l->table->name, name) == 0) {
  67                         return l->table;
  68                 }
  69         }
  70         return NULL;
  71 }
  72
  73 /*
  74   find a dcerpc interface by uuid
  75 */
  76 const struct dcerpc_interface_table *idl_iface_by_uuid(const char *uuid)
  77 {
  78         const struct dcerpc_interface_list *l;
  79         for (l=librpc_dcerpc_pipes();l;l=l->next) {
  80                 if (strcasecmp(l->table->uuid, uuid) == 0) {
  81                         return l->table;
  82                 }
  83         }
  84         return NULL;
  85 }
  86
  87
  88 /*
  89    push a dcerpc_packet into a blob, potentially with auth info
  90 */
  91 NTSTATUS dcerpc_push_auth(DATA_BLOB *blob, TALLOC_CTX *mem_ctx,
  92                           struct dcerpc_packet *pkt,
  93                           struct dcerpc_auth *auth_info)
  94 {
  95         NTSTATUS status;
  96         struct ndr_push *ndr;
  97
  98         ndr = ndr_push_init_ctx(mem_ctx);
  99         if (!ndr) {
 100                 return NT_STATUS_NO_MEMORY;
 101         }
 102
 103         if (!(pkt->drep[0] & DCERPC_DREP_LE)) {
 104                 ndr->flags |= LIBNDR_FLAG_BIGENDIAN;
 105         }
 106
 107         if (pkt->pfc_flags & DCERPC_PFC_FLAG_ORPC) {
 108                 ndr->flags |= LIBNDR_FLAG_OBJECT_PRESENT;
 109         }
 110
 111         if (auth_info) {
 112                 pkt->auth_length = auth_info->credentials.length;
 113         } else {
 114                 pkt->auth_length = 0;
 115         }
 116
 117         status = ndr_push_dcerpc_packet(ndr, NDR_SCALARS|NDR_BUFFERS, pkt);
 118         if (!NT_STATUS_IS_OK(status)) {
 119                 return status;
 120         }
 121
 122         if (auth_info) {
 123                 status = ndr_push_dcerpc_auth(ndr, NDR_SCALARS|NDR_BUFFERS, auth_info);
 124         }
 125
 126         *blob = ndr_push_blob(ndr);
 127
 128         /* fill in the frag length */
 129         dcerpc_set_frag_length(blob, blob->length);
 130
 131         return NT_STATUS_OK;
 132 }
 133
 134 #define MAX_PROTSEQ             10
 135
 136 static const struct {
 137         const char *name;
 138         enum dcerpc_transport_t transport;
 139         int num_protocols;
 140         enum epm_protocol protseq[MAX_PROTSEQ];
 141 } transports[] = {
 142         { "ncacn_np",     NCACN_NP, 3,
 143                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_SMB, EPM_PROTOCOL_NETBIOS }},
 144         { "ncacn_ip_tcp", NCACN_IP_TCP, 3,
 145                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_TCP, EPM_PROTOCOL_IP } },
 146         { "ncacn_http", NCACN_HTTP, 3,
 147                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_HTTP, EPM_PROTOCOL_IP } },
 148         { "ncadg_ip_udp", NCACN_IP_UDP, 3,
 149                 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UDP, EPM_PROTOCOL_IP } },
 150         { "ncalrpc", NCALRPC, 2,
 151                 { EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_PIPE } },
 152         { "ncacn_unix_stream", NCACN_UNIX_STREAM, 2,
 153                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_UNIX_DS } },
 154         { "ncadg_unix_dgram", NCADG_UNIX_DGRAM, 2,
 155                 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UNIX_DS } },
 156         { "ncacn_at_dsp", NCACN_AT_DSP, 3,
 157                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DSP } },
 158         { "ncadg_at_ddp", NCADG_AT_DDP, 3,
 159                 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DDP } },
 160         { "ncacn_vns_ssp", NCACN_VNS_SPP, 3,
 161                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_SPP } },
 162         { "ncacn_vns_ipc", NCACN_VNS_IPC, 3,
 163                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_IPC }, },
 164         { "ncadg_ipx", NCADG_IPX, 2,
 165                 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_IPX },
 166         },
 167         { "ncacn_spx", NCACN_SPX, 2,
 168                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_SPX },
 169         },
 170 };
 171
 172 static const struct {
 173         const char *name;
 174         uint32_t flag;
 175 } ncacn_options[] = {
 176         {"sign", DCERPC_SIGN},
 177         {"seal", DCERPC_SEAL},
 178         {"connect", DCERPC_CONNECT},
 179         {"spnego", DCERPC_AUTH_SPNEGO},
 180         {"krb5", DCERPC_AUTH_KRB5},
 181         {"validate", DCERPC_DEBUG_VALIDATE_BOTH},
 182         {"print", DCERPC_DEBUG_PRINT_BOTH},
 183         {"padcheck", DCERPC_DEBUG_PAD_CHECK},
 184         {"bigendian", DCERPC_PUSH_BIGENDIAN}
 185 };
 186
 187
 188
 189 /*
 190   form a binding string from a binding structure
 191 */
 192 const char *dcerpc_binding_string(TALLOC_CTX *mem_ctx, const struct dcerpc_binding *b)
 193 {
 194         char *s = talloc_strdup(mem_ctx, "");
 195         int i;
 196         const char *t_name=NULL;
 197
 198         for (i=0;i<ARRAY_SIZE(transports);i++) {
 199                 if (transports[i].transport == b->transport) {
 200                         t_name = transports[i].name;
 201                 }
 202         }
 203         if (!t_name) {
 204                 return NULL;
 205         }
 206
 207         if (!GUID_all_zero(&b->object)) {
 208                 s = talloc_asprintf(s, "%s@",
 209                                     GUID_string(mem_ctx, &b->object));
 210         }
 211
 212         s = talloc_asprintf_append(s, "%s:", t_name);
 213         if (!s) return NULL;
 214
 215         if (b->host) {
 216                 s = talloc_asprintf_append(s, "%s", b->host);
 217         }
 218
 219         if (!b->endpoint && !b->options && !b->flags) {
 220                 return s;
 221         }
 222
 223         s = talloc_asprintf_append(s, "[");
 224
 225         if (b->endpoint) {
 226                 s = talloc_asprintf_append(s, "%s", b->endpoint);
 227         }
 228
 229         /* this is a *really* inefficent way of dealing with strings,
 230            but this is rarely called and the strings are always short,
 231            so I don't care */
 232         for (i=0;b->options && b->options[i];i++) {
 233                 s = talloc_asprintf_append(s, ",%s", b->options[i]);
 234                 if (!s) return NULL;
 235         }
 236
 237         for (i=0;i<ARRAY_SIZE(ncacn_options);i++) {
 238                 if (b->flags & ncacn_options[i].flag) {
 239                         s = talloc_asprintf_append(s, ",%s", ncacn_options[i].name);
 240                         if (!s) return NULL;
 241                 }
 242         }
 243
 244         s = talloc_asprintf_append(s, "]");
 245
 246         return s;
 247 }
 248
 249 /*
 250   parse a binding string into a dcerpc_binding structure
 251 */
 252 NTSTATUS dcerpc_parse_binding(TALLOC_CTX *mem_ctx, const char *s, struct dcerpc_binding *b)
 253 {
 254         char *options, *type;
 255         char *p;
 256         int i, j, comma_count;
 257
 258         p = strchr(s, '@');
 259
 260         if (p && PTR_DIFF(p, s) == 36) { /* 36 is the length of a UUID */
 261                 NTSTATUS status;
 262
 263                 status = GUID_from_string(s, &b->object);
 264
 265                 if (NT_STATUS_IS_ERR(status)) {
 266                         DEBUG(0, ("Failed parsing UUID\n"));
 267                         return status;
 268                 }
 269
 270                 s = p + 1;
 271         } else {
 272                 ZERO_STRUCT(b->object);
 273         }
 274
 275         b->object_version = 0;
 276
 277         p = strchr(s, ':');
 278         if (!p) {
 279                 return NT_STATUS_INVALID_PARAMETER;
 280         }
 281
 282         type = talloc_strndup(mem_ctx, s, PTR_DIFF(p, s));
 283         if (!type) {
 284                 return NT_STATUS_NO_MEMORY;
 285         }
 286
 287         for (i=0;i<ARRAY_SIZE(transports);i++) {
 288                 if (strcasecmp(type, transports[i].name) == 0) {
 289                         b->transport = transports[i].transport;
 290                         break;
 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         s = p+1;
 299
 300         p = strchr(s, '[');
 301         if (p) {
 302                 b->host = talloc_strndup(mem_ctx, s, PTR_DIFF(p, s));
 303                 options = talloc_strdup(mem_ctx, p+1);
 304                 if (options[strlen(options)-1] != ']') {
 305                         return NT_STATUS_INVALID_PARAMETER;
 306                 }
 307                 options[strlen(options)-1] = 0;
 308         } else {
 309                 b->host = talloc_strdup(mem_ctx, s);
 310                 options = NULL;
 311         }
 312
 313         if (!b->host) {
 314                 return NT_STATUS_NO_MEMORY;
 315         }
 316
 317         b->options = NULL;
 318         b->flags = 0;
 319         b->endpoint = NULL;
 320
 321         if (!options) {
 322                 return NT_STATUS_OK;
 323         }
 324
 325         comma_count = count_chars(options, ',');
 326
 327         b->options = talloc_array_p(mem_ctx, const char *, comma_count+2);
 328         if (!b->options) {
 329                 return NT_STATUS_NO_MEMORY;
 330         }
 331
 332         for (i=0; (p = strchr(options, ',')); i++) {
 333                 b->options[i] = talloc_strndup(mem_ctx, options, PTR_DIFF(p, options));
 334                 if (!b->options[i]) {
 335                         return NT_STATUS_NO_MEMORY;
 336                 }
 337                 options = p+1;
 338         }
 339         b->options[i] = options;
 340         b->options[i+1] = NULL;
 341
 342         /* some options are pre-parsed for convenience */
 343         for (i=0;b->options[i];i++) {
 344                 for (j=0;j<ARRAY_SIZE(ncacn_options);j++) {
 345                         if (strcasecmp(ncacn_options[j].name, b->options[i]) == 0) {
 346                                 int k;
 347                                 b->flags |= ncacn_options[j].flag;
 348                                 for (k=i;b->options[k];k++) {
 349                                         b->options[k] = b->options[k+1];
 350                                 }
 351                                 i--;
 352                                 break;
 353                         }
 354                 }
 355         }
 356
 357         if (b->options[0]) {
 358                 /* Endpoint is first option */
 359                 b->endpoint = b->options[0];
 360                 if (strlen(b->endpoint) == 0) b->endpoint = NULL;
 361
 362                 for (i=0;b->options[i];i++) {
 363                         b->options[i] = b->options[i+1];
 364                 }
 365         }
 366
 367         if (b->options[0] == NULL)
 368                 b->options = NULL;
 369
 370         return NT_STATUS_OK;
 371 }
 372
 373 const char *dcerpc_floor_get_rhs_data(TALLOC_CTX *mem_ctx, struct epm_floor *floor)
 374 {
 375         switch (floor->lhs.protocol) {
 376         case EPM_PROTOCOL_TCP:
 377                 if (floor->rhs.tcp.port == 0) return NULL;
 378                 return talloc_asprintf(mem_ctx, "%d", floor->rhs.tcp.port);
 379
 380         case EPM_PROTOCOL_UDP:
 381                 if (floor->rhs.udp.port == 0) return NULL;
 382                 return talloc_asprintf(mem_ctx, "%d", floor->rhs.udp.port);
 383
 384         case EPM_PROTOCOL_HTTP:
 385                 if (floor->rhs.http.port == 0) return NULL;
 386                 return talloc_asprintf(mem_ctx, "%d", floor->rhs.http.port);
 387
 388         case EPM_PROTOCOL_IP:
 389                 if (floor->rhs.ip.address == 0) {
 390                         return NULL;
 391                 }
 392
 393                 {
 394                         struct ipv4_addr in;
 395                         in.addr = htonl(floor->rhs.ip.address);
 396                         return talloc_strdup(mem_ctx, sys_inet_ntoa(in));
 397                 }
 398
 399         case EPM_PROTOCOL_NCACN:
 400                 return NULL;
 401
 402         case EPM_PROTOCOL_NCADG:
 403                 return NULL;
 404
 405         case EPM_PROTOCOL_SMB:
 406                 if (strlen(floor->rhs.smb.unc) == 0) return NULL;
 407                 return talloc_strdup(mem_ctx, floor->rhs.smb.unc);
 408
 409         case EPM_PROTOCOL_PIPE:
 410                 if (strlen(floor->rhs.pipe.path) == 0) return NULL;
 411                 return talloc_strdup(mem_ctx, floor->rhs.pipe.path);
 412
 413         case EPM_PROTOCOL_NETBIOS:
 414                 if (strlen(floor->rhs.netbios.name) == 0) return NULL;
 415                 return talloc_strdup(mem_ctx, floor->rhs.netbios.name);
 416
 417         case EPM_PROTOCOL_NCALRPC:
 418                 return NULL;
 419
 420         case EPM_PROTOCOL_VINES_SPP:
 421                 return talloc_asprintf(mem_ctx, "%d", floor->rhs.vines_spp.port);
 422
 423         case EPM_PROTOCOL_VINES_IPC:
 424                 return talloc_asprintf(mem_ctx, "%d", floor->rhs.vines_ipc.port);
 425
 426         case EPM_PROTOCOL_STREETTALK:
 427                 return talloc_strdup(mem_ctx, floor->rhs.streettalk.streettalk);
 428
 429         case EPM_PROTOCOL_UNIX_DS:
 430                 if (strlen(floor->rhs.unix_ds.path) == 0) return NULL;
 431                 return talloc_strdup(mem_ctx, floor->rhs.unix_ds.path);
 432
 433         case EPM_PROTOCOL_NULL:
 434                 return NULL;
 435
 436         default:
 437                 DEBUG(0,("Unsupported lhs protocol %d\n", floor->lhs.protocol));
 438                 break;
 439         }
 440
 441         return NULL;
 442 }
 443
 444 static NTSTATUS dcerpc_floor_set_rhs_data(TALLOC_CTX *mem_ctx, struct epm_floor *floor,  const char *data)
 445 {
 446         switch (floor->lhs.protocol) {
 447         case EPM_PROTOCOL_TCP:
 448                 floor->rhs.tcp.port = atoi(data);
 449                 return NT_STATUS_OK;
 450
 451         case EPM_PROTOCOL_UDP:
 452                 floor->rhs.udp.port = atoi(data);
 453                 return NT_STATUS_OK;
 454
 455         case EPM_PROTOCOL_HTTP:
 456                 floor->rhs.http.port = atoi(data);
 457                 return NT_STATUS_OK;
 458
 459         case EPM_PROTOCOL_IP:
 460                 if (strlen(data) > 0) {
 461                         floor->rhs.ip.address = ntohl(interpret_addr(data));
 462                 } else {
 463                         floor->rhs.ip.address = 0;
 464                 }
 465                 return NT_STATUS_OK;
 466
 467         case EPM_PROTOCOL_NCACN:
 468                 floor->rhs.ncacn.minor_version = 0;
 469                 return NT_STATUS_OK;
 470
 471         case EPM_PROTOCOL_NCADG:
 472                 floor->rhs.ncadg.minor_version = 0;
 473                 return NT_STATUS_OK;
 474
 475         case EPM_PROTOCOL_SMB:
 476                 floor->rhs.smb.unc = talloc_strdup(mem_ctx, data);
 477                 if (!floor->rhs.smb.unc) {
 478                         return NT_STATUS_NO_MEMORY;
 479                 }
 480                 return NT_STATUS_OK;
 481
 482         case EPM_PROTOCOL_PIPE:
 483                 floor->rhs.pipe.path = talloc_strdup(mem_ctx, data);
 484                 if (!floor->rhs.pipe.path) {
 485                         return NT_STATUS_NO_MEMORY;
 486                 }
 487                 return NT_STATUS_OK;
 488
 489         case EPM_PROTOCOL_NETBIOS:
 490                 floor->rhs.netbios.name = talloc_strdup(mem_ctx, data);
 491                 if (!floor->rhs.netbios.name) {
 492                         return NT_STATUS_NO_MEMORY;
 493                 }
 494                 return NT_STATUS_OK;
 495
 496         case EPM_PROTOCOL_NCALRPC:
 497                 return NT_STATUS_OK;
 498
 499         case EPM_PROTOCOL_VINES_SPP:
 500                 floor->rhs.vines_spp.port = atoi(data);
 501                 return NT_STATUS_OK;
 502
 503         case EPM_PROTOCOL_VINES_IPC:
 504                 floor->rhs.vines_ipc.port = atoi(data);
 505                 return NT_STATUS_OK;
 506
 507         case EPM_PROTOCOL_STREETTALK:
 508                 floor->rhs.streettalk.streettalk = talloc_strdup(mem_ctx, data);
 509                 if (!floor->rhs.streettalk.streettalk) {
 510                         return NT_STATUS_NO_MEMORY;
 511                 }
 512                 return NT_STATUS_OK;
 513
 514         case EPM_PROTOCOL_UNIX_DS:
 515                 floor->rhs.unix_ds.path = talloc_strdup(mem_ctx, data);
 516                 if (!floor->rhs.unix_ds.path) {
 517                         return NT_STATUS_NO_MEMORY;
 518                 }
 519                 return NT_STATUS_OK;
 520
 521         case EPM_PROTOCOL_NULL:
 522                 return NT_STATUS_OK;
 523
 524         default:
 525                 DEBUG(0,("Unsupported lhs protocol %d\n", floor->lhs.protocol));
 526                 break;
 527         }
 528
 529         return NT_STATUS_NOT_SUPPORTED;
 530 }
 531
 532 enum dcerpc_transport_t dcerpc_transport_by_endpoint_protocol(int prot)
 533 {
 534         int i;
 535
 536         /* Find a transport that has 'prot' as 4th protocol */
 537         for (i=0;i<ARRAY_SIZE(transports);i++) {
 538                 if (transports[i].num_protocols >= 2 &&
 539                         transports[i].protseq[1] == prot) {
 540                         return transports[i].transport;
 541                 }
 542         }
 543
 544         /* Unknown transport */
 545         return -1;
 546 }
 547
 548 enum dcerpc_transport_t dcerpc_transport_by_tower(struct epm_tower *tower)
 549 {
 550         int i;
 551
 552         /* Find a transport that matches this tower */
 553         for (i=0;i<ARRAY_SIZE(transports);i++) {
 554                 int j;
 555                 if (transports[i].num_protocols != tower->num_floors - 2) {
 556                         continue;
 557                 }
 558
 559                 for (j = 0; j < transports[i].num_protocols; j++) {
 560                         if (transports[i].protseq[j] != tower->floors[j+2].lhs.protocol) {
 561                                 break;
 562                         }
 563                 }
 564
 565                 if (j == transports[i].num_protocols) {
 566                         return transports[i].transport;
 567                 }
 568         }
 569
 570         /* Unknown transport */
 571         return -1;
 572 }
 573
 574 NTSTATUS dcerpc_binding_from_tower(TALLOC_CTX *mem_ctx, struct epm_tower *tower, struct dcerpc_binding *binding)
 575 {
 576         ZERO_STRUCT(binding->object);
 577         binding->options = NULL;
 578         binding->host = NULL;
 579         binding->flags = 0;
 580
 581         binding->transport = dcerpc_transport_by_tower(tower);
 582
 583         if (binding->transport == -1) {
 584                 return NT_STATUS_NOT_SUPPORTED;
 585         }
 586
 587         if (tower->num_floors < 1) {
 588                 return NT_STATUS_OK;
 589         }
 590
 591         /* Set object uuid */
 592         binding->object = tower->floors[0].lhs.info.uuid.uuid;
 593         binding->object_version = tower->floors[0].lhs.info.uuid.version;
 594
 595         /* Ignore floor 1, it contains the NDR version info */
 596
 597         binding->options = NULL;
 598
 599         /* Set endpoint */
 600         if (tower->num_floors >= 4) {
 601                 binding->endpoint = dcerpc_floor_get_rhs_data(mem_ctx, &tower->floors[3]);
 602         } else {
 603                 binding->endpoint = NULL;
 604         }
 605
 606         /* Set network address */
 607         if (tower->num_floors >= 5) {
 608                 binding->host = dcerpc_floor_get_rhs_data(mem_ctx, &tower->floors[4]);
 609         }
 610         return NT_STATUS_OK;
 611 }
 612
 613 NTSTATUS dcerpc_binding_build_tower(TALLOC_CTX *mem_ctx, struct dcerpc_binding *binding, struct epm_tower *tower)
 614 {
 615         const enum epm_protocol *protseq = NULL;
 616         int num_protocols = -1, i;
 617         NTSTATUS status;
 618
 619         /* Find transport */
 620         for (i=0;i<ARRAY_SIZE(transports);i++) {
 621                 if (transports[i].transport == binding->transport) {
 622                         protseq = transports[i].protseq;
 623                         num_protocols = transports[i].num_protocols;
 624                         break;
 625                 }
 626         }
 627
 628         if (num_protocols == -1) {
 629                 DEBUG(0, ("Unable to find transport with id '%d'\n", binding->transport));
 630                 return NT_STATUS_UNSUCCESSFUL;
 631         }
 632
 633         tower->num_floors = 2 + num_protocols;
 634         tower->floors = talloc_array_p(mem_ctx, struct epm_floor, tower->num_floors);
 635
 636         /* Floor 0 */
 637         tower->floors[0].lhs.protocol = EPM_PROTOCOL_UUID;
 638         tower->floors[0].lhs.info.uuid.uuid = binding->object;
 639         tower->floors[0].lhs.info.uuid.version = binding->object_version;
 640         tower->floors[0].rhs.uuid.unknown = 0;
 641
 642         /* Floor 1 */
 643         tower->floors[1].lhs.protocol = EPM_PROTOCOL_UUID;
 644         tower->floors[1].lhs.info.uuid.version = NDR_GUID_VERSION;
 645         tower->floors[1].rhs.uuid.unknown = 0;
 646         status = GUID_from_string(NDR_GUID, &tower->floors[1].lhs.info.uuid.uuid);
 647         if (NT_STATUS_IS_ERR(status)) {
 648                 return status;
 649         }
 650
 651         /* Floor 2 to num_protocols */
 652         for (i = 0; i < num_protocols; i++) {
 653                 tower->floors[2 + i].lhs.protocol = protseq[i];
 654                 tower->floors[2 + i].lhs.info.lhs_data = data_blob_talloc(mem_ctx, NULL, 0);
 655                 ZERO_STRUCT(tower->floors[2 + i].rhs);
 656                 dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[2 + i], "");
 657         }
 658
 659         /* The 4th floor contains the endpoint */
 660         if (num_protocols >= 2 && binding->endpoint) {
 661                 status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[3], binding->endpoint);
 662                 if (NT_STATUS_IS_ERR(status)) {
 663                         return status;
 664                 }
 665         }
 666
 667         /* The 5th contains the network address */
 668         if (num_protocols >= 3 && binding->host) {
 669                 status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[4], binding->host);
 670                 if (NT_STATUS_IS_ERR(status)) {
 671                         return status;
 672                 }
 673         }
 674
 675         return NT_STATUS_OK;
 676 }
 677
 678 NTSTATUS dcerpc_epm_map_binding(TALLOC_CTX *mem_ctx, struct dcerpc_binding *binding,
 679                                  const char *uuid, uint_t version)
 680 {
 681         struct dcerpc_pipe *p;
 682         NTSTATUS status;
 683         struct epm_Map r;
 684         struct policy_handle handle;
 685         struct GUID guid;
 686         struct epm_twr_t twr, *twr_r;
 687         struct dcerpc_binding epmapper_binding;
 688         const struct dcerpc_interface_table *table = idl_iface_by_uuid(uuid);
 689         int i;
 690
 691         /* First, check if there is a default endpoint specified in the IDL */
 692
 693         if (table) {
 694                 struct dcerpc_binding default_binding;
 695
 696                 /* Find one of the default pipes for this interface */
 697                 for (i = 0; i < table->endpoints->count; i++) {
 698                         status = dcerpc_parse_binding(mem_ctx, table->endpoints->names[i], &default_binding);
 699
 700                         if (NT_STATUS_IS_OK(status) && default_binding.transport == binding->transport && default_binding.endpoint) {
 701                                 binding->endpoint = talloc_strdup(mem_ctx, default_binding.endpoint);
 702                                 return NT_STATUS_OK;
 703                         }
 704                 }
 705         }
 706
 707
 708         ZERO_STRUCT(epmapper_binding);
 709         epmapper_binding.transport = binding->transport;
 710         epmapper_binding.host = binding->host;
 711         epmapper_binding.options = NULL;
 712         epmapper_binding.flags = 0;
 713         epmapper_binding.endpoint = NULL;
 714
 715         status = dcerpc_pipe_connect_b(&p,
 716                                         &epmapper_binding,
 717                                    DCERPC_EPMAPPER_UUID,
 718                                    DCERPC_EPMAPPER_VERSION,
 719                                    NULL, NULL, NULL);
 720
 721         if (!NT_STATUS_IS_OK(status)) {
 722                 return status;
 723         }
 724
 725         ZERO_STRUCT(handle);
 726         ZERO_STRUCT(guid);
 727
 728         status = GUID_from_string(uuid, &binding->object);
 729         if (NT_STATUS_IS_ERR(status)) {
 730                 return status;
 731         }
 732
 733         binding->object_version = version;
 734
 735         status = dcerpc_binding_build_tower(p, binding, &twr.tower);
 736         if (NT_STATUS_IS_ERR(status)) {
 737                 return status;
 738         }
 739
 740         /* with some nice pretty paper around it of course */
 741         r.in.object = &guid;
 742         r.in.map_tower = &twr;
 743         r.in.entry_handle = &handle;
 744         r.in.max_towers = 1;
 745         r.out.entry_handle = &handle;
 746
 747         status = dcerpc_epm_Map(p, p, &r);
 748         if (!NT_STATUS_IS_OK(status)) {
 749                 dcerpc_pipe_close(p);
 750                 return status;
 751         }
 752         if (r.out.result != 0 || r.out.num_towers != 1) {
 753                 dcerpc_pipe_close(p);
 754                 return NT_STATUS_PORT_UNREACHABLE;
 755         }
 756
 757         twr_r = r.out.towers[0].twr;
 758         if (!twr_r) {
 759                 dcerpc_pipe_close(p);
 760                 return NT_STATUS_PORT_UNREACHABLE;
 761         }
 762
 763         if (twr_r->tower.num_floors != twr.tower.num_floors ||
 764             twr_r->tower.floors[3].lhs.protocol != twr.tower.floors[3].lhs.protocol) {
 765                 dcerpc_pipe_close(p);
 766                 return NT_STATUS_PORT_UNREACHABLE;
 767         }
 768
 769         binding->endpoint = dcerpc_floor_get_rhs_data(mem_ctx, &twr_r->tower.floors[3]);
 770
 771         dcerpc_pipe_close(p);
 772
 773         return NT_STATUS_OK;
 774 }
 775
 776
 777 /*
 778    perform an authenticated bind if needed
 779 */
 780 static NTSTATUS dcerpc_pipe_auth(struct dcerpc_pipe *p,
 781                                  struct dcerpc_binding *binding,
 782                                  const char *pipe_uuid,
 783                                  uint32_t pipe_version,
 784                                  const char *domain,
 785                                  const char *username,
 786                                  const char *password)
 787 {
 788         NTSTATUS status;
 789         p->conn->flags = binding->flags;
 790
 791         /* remember the binding string for possible secondary connections */
 792         p->conn->binding_string = dcerpc_binding_string(p, binding);
 793
 794         if (username && username[0] && (binding->flags & DCERPC_SCHANNEL_ANY)) {
 795                 status = dcerpc_bind_auth_schannel(p, pipe_uuid, pipe_version,
 796                                                    domain, username, password);
 797         } else if (username && username[0]) {
 798                 uint8_t auth_type;
 799                 if (binding->flags & DCERPC_AUTH_SPNEGO) {
 800                         auth_type = DCERPC_AUTH_TYPE_SPNEGO;
 801                 } else if (binding->flags & DCERPC_AUTH_KRB5) {
 802                         auth_type = DCERPC_AUTH_TYPE_KRB5;
 803                 } else {
 804                         auth_type = DCERPC_AUTH_TYPE_NTLMSSP;
 805                 }
 806
 807                 status = dcerpc_bind_auth_password(p, pipe_uuid, pipe_version,
 808                                                    domain, username, password,
 809                                                    auth_type);
 810         } else {
 811                 status = dcerpc_bind_auth_none(p, pipe_uuid, pipe_version);
 812         }
 813
 814         if (!NT_STATUS_IS_OK(status)) {
 815                 DEBUG(0,("Failed to bind to uuid %s - %s\n", pipe_uuid, nt_errstr(status)));
 816         }
 817         return status;
 818 }
 819
 820
 821 /* open a rpc connection to a rpc pipe on SMB using the binding
 822    structure to determine the endpoint and options */
 823 static NTSTATUS dcerpc_pipe_connect_ncacn_np(struct dcerpc_pipe **pp,
 824                                              struct dcerpc_binding *binding,
 825                                              const char *pipe_uuid,
 826                                              uint32_t pipe_version,
 827                                              const char *domain,
 828                                              const char *username,
 829                                              const char *password)
 830 {
 831         struct dcerpc_pipe *p;
 832         NTSTATUS status;
 833         struct smbcli_state *cli;
 834         const char *pipe_name = NULL;
 835         TALLOC_CTX *tmp_ctx;
 836
 837         *pp = NULL;
 838
 839         p = dcerpc_pipe_init(NULL);
 840         if (p == NULL) {
 841                 return NT_STATUS_NO_MEMORY;
 842         }
 843         tmp_ctx = talloc_new(p);
 844
 845         /* Look up identifier using the epmapper */
 846         if (!binding->endpoint) {
 847                 status = dcerpc_epm_map_binding(tmp_ctx, binding, pipe_uuid, pipe_version);
 848                 if (!NT_STATUS_IS_OK(status)) {
 849                         DEBUG(0,("Failed to map DCERPC/TCP NCACN_NP pipe for '%s' - %s\n",
 850                                  pipe_uuid, nt_errstr(status)));
 851                         talloc_free(p);
 852                         return status;
 853                 }
 854                 DEBUG(1,("Mapped to DCERPC/NP pipe %s\n", binding->endpoint));
 855         }
 856
 857         pipe_name = binding->endpoint;
 858
 859         if (!strncasecmp(pipe_name, "/pipe/", 6) ||
 860             !strncasecmp(pipe_name, "\\pipe\\", 6)) {
 861                 pipe_name += 6;
 862         }
 863
 864         if (pipe_name[0] != '\\') {
 865                 pipe_name = talloc_asprintf(tmp_ctx, "\\%s", pipe_name);
 866         }
 867
 868         if (!username || !username[0] ||
 869             (binding->flags & DCERPC_SCHANNEL_ANY)) {
 870                 status = smbcli_full_connection(p->conn, &cli, lp_netbios_name(),
 871                                                 binding->host,
 872                                                 "ipc$", NULL,
 873                                                 "", "", NULL);
 874         } else {
 875                 status = smbcli_full_connection(p->conn, &cli, lp_netbios_name(),
 876                                                 binding->host,
 877                                                 "ipc$", NULL,
 878                                                 username, domain,
 879                                                 password);
 880         }
 881         if (!NT_STATUS_IS_OK(status)) {
 882                 DEBUG(0,("Failed to connect to %s - %s\n", binding->host, nt_errstr(status)));
 883                 talloc_free(p);
 884                 return status;
 885         }
 886
 887         status = dcerpc_pipe_open_smb(p->conn, cli->tree, pipe_name);
 888         if (!NT_STATUS_IS_OK(status)) {
 889                 DEBUG(0,("Failed to open pipe %s - %s\n", pipe_name, nt_errstr(status)));
 890                 talloc_free(p);
 891                 return status;
 892         }
 893
 894         if (!(binding->flags & DCERPC_AUTH_OPTIONS)) {
 895                 username = NULL;
 896         }
 897
 898         status = dcerpc_pipe_auth(p, binding, pipe_uuid, pipe_version, domain, username, password);
 899         if (!NT_STATUS_IS_OK(status)) {
 900                 talloc_free(p);
 901                 return status;
 902         }
 903
 904         (*pp) = p;
 905         talloc_free(tmp_ctx);
 906
 907         return NT_STATUS_OK;
 908 }
 909
 910 /* open a rpc connection to a rpc pipe on SMP using the binding
 911    structure to determine the endpoint and options */
 912 static NTSTATUS dcerpc_pipe_connect_ncalrpc(struct dcerpc_pipe **pp,
 913                                             struct dcerpc_binding *binding,
 914                                             const char *pipe_uuid,
 915                                             uint32_t pipe_version,
 916                                             const char *domain,
 917                                             const char *username,
 918                                             const char *password)
 919 {
 920         NTSTATUS status;
 921         struct dcerpc_pipe *p;
 922         TALLOC_CTX *tmp_ctx;
 923
 924         (*pp) = NULL;
 925
 926         p = dcerpc_pipe_init(NULL);
 927         if (p == NULL) {
 928                 return NT_STATUS_NO_MEMORY;
 929         }
 930         tmp_ctx = talloc_new(p);
 931
 932         /* Look up identifier using the epmapper */
 933         if (!binding->endpoint) {
 934                 status = dcerpc_epm_map_binding(tmp_ctx, binding, pipe_uuid, pipe_version);
 935                 if (!NT_STATUS_IS_OK(status)) {
 936                         DEBUG(0,("Failed to map DCERPC/TCP NCALRPC identifier for '%s' - %s\n",
 937                                  pipe_uuid, nt_errstr(status)));
 938                         talloc_free(p);
 939                         return status;
 940                 }
 941                 DEBUG(1,("Mapped to DCERPC/LRPC identifier %s\n", binding->endpoint));
 942         }
 943
 944         status = dcerpc_pipe_open_pipe(p->conn, binding->endpoint);
 945         if (!NT_STATUS_IS_OK(status)) {
 946                 DEBUG(0,("Failed to open ncalrpc pipe '%s' - %s\n",
 947                          binding->endpoint, nt_errstr(status)));
 948                 talloc_free(p);
 949                 return status;
 950         }
 951
 952         status = dcerpc_pipe_auth(p, binding, pipe_uuid, pipe_version, domain, username, password);
 953         if (!NT_STATUS_IS_OK(status)) {
 954                 talloc_free(p);
 955                 return status;
 956         }
 957
 958         (*pp) = p;
 959         talloc_free(tmp_ctx);
 960
 961         return status;
 962 }
 963
 964
 965
 966 /* open a rpc connection to a rpc pipe on SMP using the binding
 967    structure to determine the endpoint and options */
 968 static NTSTATUS dcerpc_pipe_connect_ncacn_unix_stream(struct dcerpc_pipe **pp,
 969                                                       struct dcerpc_binding *binding,
 970                                                       const char *pipe_uuid,
 971                                                       uint32_t pipe_version,
 972                                                       const char *domain,
 973                                                       const char *username,
 974                                                       const char *password)
 975 {
 976         NTSTATUS status;
 977         struct dcerpc_pipe *p;
 978
 979         (*pp) = NULL;
 980
 981         if (!binding->endpoint) {
 982                 DEBUG(0, ("Path to unix socket not specified\n"));
 983                 return NT_STATUS_INVALID_PARAMETER;
 984         }
 985
 986         p = dcerpc_pipe_init(NULL);
 987         if (p == NULL) {
 988                 return NT_STATUS_NO_MEMORY;
 989         }
 990
 991         status = dcerpc_pipe_open_unix_stream(p->conn, binding->endpoint);
 992         if (!NT_STATUS_IS_OK(status)) {
 993                 DEBUG(0,("Failed to open unix socket %s - %s\n",
 994                          binding->endpoint, nt_errstr(status)));
 995                 talloc_free(p);
 996                 return status;
 997         }
 998
 999         status = dcerpc_pipe_auth(p, binding, pipe_uuid, pipe_version, domain, username, password);
1000         if (!NT_STATUS_IS_OK(status)) {
1001                 talloc_free(p);
1002                 return status;
1003         }
1004
1005         (*pp) = p;
1006
1007         return status;
1008 }
1009
1010 /* open a rpc connection to a rpc pipe on SMP using the binding
1011    structure to determine the endpoint and options */
1012 static NTSTATUS dcerpc_pipe_connect_ncacn_ip_tcp(struct dcerpc_pipe **pp,
1013                                                  struct dcerpc_binding *binding,
1014                                                  const char *pipe_uuid,
1015                                                  uint32_t pipe_version,
1016                                                  const char *domain,
1017                                                  const char *username,
1018                                                  const char *password)
1019 {
1020         NTSTATUS status;
1021         uint32_t port = 0;
1022         struct dcerpc_pipe *p;
1023         TALLOC_CTX *tmp_ctx;
1024
1025         (*pp) = NULL;
1026
1027         p = dcerpc_pipe_init(NULL);
1028         if (p == NULL) {
1029                 return NT_STATUS_NO_MEMORY;
1030         }
1031         tmp_ctx = talloc_new(p);
1032
1033         if (!binding->endpoint) {
1034                 status = dcerpc_epm_map_binding(tmp_ctx, binding,
1035                                                 pipe_uuid, pipe_version);
1036                 if (!NT_STATUS_IS_OK(status)) {
1037                         DEBUG(0,("Failed to map DCERPC/TCP port for '%s' - %s\n",
1038                                  pipe_uuid, nt_errstr(status)));
1039                         talloc_free(p);
1040                         return status;
1041                 }
1042                 DEBUG(1,("Mapped to DCERPC/TCP port %s\n", binding->endpoint));
1043         }
1044
1045         port = atoi(binding->endpoint);
1046
1047         status = dcerpc_pipe_open_tcp(p->conn, binding->host, port);
1048         if (!NT_STATUS_IS_OK(status)) {
1049                 DEBUG(0,("Failed to connect to %s:%d - %s\n",
1050                          binding->host, port, nt_errstr(status)));
1051                 talloc_free(p);
1052                 return status;
1053         }
1054
1055         status = dcerpc_pipe_auth(p, binding, pipe_uuid, pipe_version, domain, username, password);
1056         if (!NT_STATUS_IS_OK(status)) {
1057                 talloc_free(p);
1058                 return status;
1059         }
1060
1061         (*pp) = p;
1062         talloc_free(tmp_ctx);
1063
1064         return status;
1065 }
1066
1067
1068 /* open a rpc connection to a rpc pipe, using the specified
1069    binding structure to determine the endpoint and options */
1070 NTSTATUS dcerpc_pipe_connect_b(struct dcerpc_pipe **pp,
1071                                struct dcerpc_binding *binding,
1072                                const char *pipe_uuid,
1073                                uint32_t pipe_version,
1074                                const char *domain,
1075                                const char *username,
1076                                const char *password)
1077 {
1078         NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
1079
1080         switch (binding->transport) {
1081         case NCACN_NP:
1082                 status = dcerpc_pipe_connect_ncacn_np(pp, binding, pipe_uuid, pipe_version,
1083                                                       domain, username, password);
1084                 break;
1085         case NCACN_IP_TCP:
1086                 status = dcerpc_pipe_connect_ncacn_ip_tcp(pp, binding, pipe_uuid, pipe_version,
1087                                                           domain, username, password);
1088                 break;
1089         case NCACN_UNIX_STREAM:
1090                 status = dcerpc_pipe_connect_ncacn_unix_stream(pp, binding, pipe_uuid, pipe_version,
1091                                                                domain, username, password);
1092                 break;
1093         case NCALRPC:
1094                 status = dcerpc_pipe_connect_ncalrpc(pp, binding, pipe_uuid, pipe_version,
1095                                                      domain, username, password);
1096                 break;
1097         default:
1098                 return NT_STATUS_NOT_SUPPORTED;
1099         }
1100
1101         return status;
1102 }
1103
1104
1105 /* open a rpc connection to a rpc pipe, using the specified string
1106    binding to determine the endpoint and options */
1107 NTSTATUS dcerpc_pipe_connect(struct dcerpc_pipe **pp,
1108                              const char *binding,
1109                              const char *pipe_uuid,
1110                              uint32_t pipe_version,
1111                              const char *domain,
1112                              const char *username,
1113                              const char *password)
1114 {
1115         struct dcerpc_binding b;
1116         NTSTATUS status;
1117         TALLOC_CTX *tmp_ctx;
1118
1119         tmp_ctx = talloc_new(NULL);
1120
1121         status = dcerpc_parse_binding(tmp_ctx, binding, &b);
1122         if (!NT_STATUS_IS_OK(status)) {
1123                 DEBUG(0,("Failed to parse dcerpc binding '%s'\n", binding));
1124                 talloc_free(tmp_ctx);
1125                 return status;
1126         }
1127
1128         DEBUG(3,("Using binding %s\n", dcerpc_binding_string(tmp_ctx, &b)));
1129
1130         status = dcerpc_pipe_connect_b(pp, &b, pipe_uuid, pipe_version, domain, username, password);
1131
1132         talloc_free(tmp_ctx);
1133
1134         return status;
1135 }
1136
1137
1138 /*
1139   create a secondary dcerpc connection from a primary connection
1140
1141   if the primary is a SMB connection then the secondary connection
1142   will be on the same SMB connection, but use a new fnum
1143 */
1144 NTSTATUS dcerpc_secondary_connection(struct dcerpc_pipe *p, struct dcerpc_pipe **p2,
1145                                      const char *pipe_name,
1146                                      const char *pipe_uuid,
1147                                      uint32_t pipe_version)
1148 {
1149         struct smbcli_tree *tree;
1150         NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
1151         struct dcerpc_binding b;
1152
1153         (*p2) = dcerpc_pipe_init(p);
1154         if (*p2 == NULL) {
1155                 return NT_STATUS_NO_MEMORY;
1156         }
1157
1158         switch (p->conn->transport.transport) {
1159         case NCACN_NP:
1160                 tree = dcerpc_smb_tree(p->conn);
1161                 if (!tree) {
1162                         return NT_STATUS_INVALID_PARAMETER;
1163                 }
1164                 status = dcerpc_pipe_open_smb((*p2)->conn, tree, pipe_name);
1165                 break;
1166
1167         case NCACN_IP_TCP:
1168                 status = dcerpc_parse_binding(p, p->conn->binding_string, &b);
1169                 if (!NT_STATUS_IS_OK(status)) {
1170                         return status;
1171                 }
1172                 status = dcerpc_pipe_open_tcp((*p2)->conn, b.host, atoi(b.endpoint));
1173                 break;
1174
1175         case NCALRPC:
1176                 status = dcerpc_parse_binding(p, p->conn->binding_string, &b);
1177                 if (!NT_STATUS_IS_OK(status)) {
1178                         return status;
1179                 }
1180                 status = dcerpc_pipe_open_pipe((*p2)->conn, b.endpoint);
1181                 break;
1182
1183         default:
1184                 return NT_STATUS_NOT_SUPPORTED;
1185         }
1186
1187         if (!NT_STATUS_IS_OK(status)) {
1188                 talloc_free(*p2);
1189                 return status;
1190         }
1191
1192         (*p2)->conn->flags = p->conn->flags;
1193
1194         status = dcerpc_bind_auth_none(*p2, pipe_uuid, pipe_version);
1195         if (!NT_STATUS_IS_OK(status)) {
1196                 talloc_free(*p2);
1197                 return status;
1198         }
1199
1200         return NT_STATUS_OK;
1201 }
1202
1203 NTSTATUS dcerpc_generic_session_key(struct dcerpc_connection *c,
1204                                     DATA_BLOB *session_key)
1205 {
1206         /* this took quite a few CPU cycles to find ... */
1207         session_key->data = discard_const_p(unsigned char, "SystemLibraryDTC");
1208         session_key->length = 16;
1209         return NT_STATUS_OK;
1210 }
1211
1212 /*
1213   fetch the user session key - may be default (above) or the SMB session key
1214 */
1215 NTSTATUS dcerpc_fetch_session_key(struct dcerpc_pipe *p,
1216                                   DATA_BLOB *session_key)
1217 {
1218         return p->conn->security_state.session_key(p->conn, session_key);
1219 }
1220
1221
1222 /*
1223   log a rpc packet in a format suitable for ndrdump. This is especially useful
1224   for sealed packets, where ethereal cannot easily see the contents
1225
1226   this triggers on a debug level of >= 10
1227 */
1228 void dcerpc_log_packet(const struct dcerpc_interface_table *ndr,
1229                        uint32_t opnum, uint32_t flags, DATA_BLOB *pkt)
1230 {
1231         const int num_examples = 20;
1232         int i;
1233
1234         if (DEBUGLEVEL < 10) return;
1235
1236         for (i=0;i<num_examples;i++) {
1237                 char *name=NULL;
1238                 asprintf(&name, "%s/rpclog/%s-%u.%d.%s",
1239                          lp_lockdir(), ndr->name, opnum, i,
1240                          (flags&NDR_IN)?"in":"out");
1241                 if (name == NULL) {
1242                         return;
1243                 }
1244                 if (!file_exist(name, NULL)) {
1245                         if (file_save(name, pkt->data, pkt->length)) {
1246                                 DEBUG(10,("Logged rpc packet to %s\n", name));
1247                         }
1248                         free(name);
1249                         break;
1250                 }
1251                 free(name);
1252         }
1253 }
1254
1255
1256
1257 /*
1258   create a secondary context from a primary connection
1259
1260   this uses dcerpc_alter_context() to create a new dcerpc context_id
1261 */
1262 NTSTATUS dcerpc_secondary_context(struct dcerpc_pipe *p,
1263                                   struct dcerpc_pipe **pp2,
1264                                   const char *pipe_uuid,
1265                                   uint32_t pipe_version)
1266 {
1267         NTSTATUS status;
1268         struct dcerpc_pipe *p2;
1269
1270         p2 = talloc_zero(p, struct dcerpc_pipe);
1271         if (p2 == NULL) {
1272                 return NT_STATUS_NO_MEMORY;
1273         }
1274         p2->conn = talloc_reference(p2, p->conn);
1275
1276         p2->context_id = ++p->conn->next_context_id;
1277
1278         status = GUID_from_string(pipe_uuid, &p2->syntax.uuid);
1279         if (!NT_STATUS_IS_OK(status)) {
1280                 talloc_free(p2);
1281                 return status;
1282         }
1283         p2->syntax.if_version = pipe_version;
1284
1285         status = GUID_from_string(NDR_GUID, &p2->transfer_syntax.uuid);
1286         if (!NT_STATUS_IS_OK(status)) {
1287                 talloc_free(p2);
1288                 return status;
1289         }
1290         p2->transfer_syntax.if_version = NDR_GUID_VERSION;
1291
1292         status = dcerpc_alter_context(p2, p2, &p2->syntax, &p2->transfer_syntax);
1293         if (!NT_STATUS_IS_OK(status)) {
1294                 talloc_free(p2);
1295                 return status;
1296         }
1297
1298         *pp2 = p2;
1299
1300         return status;
1301 }