source4/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    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23 */
  24
  25 #include "includes.h"
  26 #include "system/network.h"
  27 #include "librpc/gen_ndr/ndr_epmapper.h"
  28
  29 /*
  30   find the pipe name for a local IDL interface
  31 */
  32 const char *idl_pipe_name(const char *uuid, uint32_t if_version)
  33 {
  34         const struct dcerpc_interface_list *l;
  35         for (l=librpc_dcerpc_pipes();l;l=l->next) {
  36                 if (strcasecmp(l->table->uuid, uuid) == 0 &&
  37                     l->table->if_version == if_version) {
  38                         return l->table->name;
  39                 }
  40         }
  41         return "UNKNOWN";
  42 }
  43
  44 /*
  45   find the number of calls defined by local IDL
  46 */
  47 int idl_num_calls(const char *uuid, uint32_t if_version)
  48 {
  49         const struct dcerpc_interface_list *l;
  50         for (l=librpc_dcerpc_pipes();l;l=l->next){
  51                 if (strcasecmp(l->table->uuid, uuid) == 0 &&
  52                     l->table->if_version == if_version) {
  53                         return l->table->num_calls;
  54                 }
  55         }
  56         return -1;
  57 }
  58
  59
  60 /*
  61   find a dcerpc interface by name
  62 */
  63 const struct dcerpc_interface_table *idl_iface_by_name(const char *name)
  64 {
  65         const struct dcerpc_interface_list *l;
  66         for (l=librpc_dcerpc_pipes();l;l=l->next) {
  67                 if (strcasecmp(l->table->name, name) == 0) {
  68                         return l->table;
  69                 }
  70         }
  71         return NULL;
  72 }
  73
  74 /*
  75   find a dcerpc interface by uuid
  76 */
  77 const struct dcerpc_interface_table *idl_iface_by_uuid(const char *uuid)
  78 {
  79         const struct dcerpc_interface_list *l;
  80         for (l=librpc_dcerpc_pipes();l;l=l->next) {
  81                 if (strcasecmp(l->table->uuid, uuid) == 0) {
  82                         return l->table;
  83                 }
  84         }
  85         return NULL;
  86 }
  87
  88
  89 /*
  90    push a ncacn_packet into a blob, potentially with auth info
  91 */
  92 NTSTATUS ncacn_push_auth(DATA_BLOB *blob, TALLOC_CTX *mem_ctx,
  93                           struct ncacn_packet *pkt,
  94                           struct dcerpc_auth *auth_info)
  95 {
  96         NTSTATUS status;
  97         struct ndr_push *ndr;
  98
  99         ndr = ndr_push_init_ctx(mem_ctx);
 100         if (!ndr) {
 101                 return NT_STATUS_NO_MEMORY;
 102         }
 103
 104         if (!(pkt->drep[0] & DCERPC_DREP_LE)) {
 105                 ndr->flags |= LIBNDR_FLAG_BIGENDIAN;
 106         }
 107
 108         if (pkt->pfc_flags & DCERPC_PFC_FLAG_ORPC) {
 109                 ndr->flags |= LIBNDR_FLAG_OBJECT_PRESENT;
 110         }
 111
 112         if (auth_info) {
 113                 pkt->auth_length = auth_info->credentials.length;
 114         } else {
 115                 pkt->auth_length = 0;
 116         }
 117
 118         status = ndr_push_ncacn_packet(ndr, NDR_SCALARS|NDR_BUFFERS, pkt);
 119         if (!NT_STATUS_IS_OK(status)) {
 120                 return status;
 121         }
 122
 123         if (auth_info) {
 124                 status = ndr_push_dcerpc_auth(ndr, NDR_SCALARS|NDR_BUFFERS, auth_info);
 125         }
 126
 127         *blob = ndr_push_blob(ndr);
 128
 129         /* fill in the frag length */
 130         dcerpc_set_frag_length(blob, blob->length);
 131
 132         return NT_STATUS_OK;
 133 }
 134
 135 #define MAX_PROTSEQ             10
 136
 137 static const struct {
 138         const char *name;
 139         enum dcerpc_transport_t transport;
 140         int num_protocols;
 141         enum epm_protocol protseq[MAX_PROTSEQ];
 142 } transports[] = {
 143         { "ncacn_np",     NCACN_NP, 3,
 144                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_SMB, EPM_PROTOCOL_NETBIOS }},
 145         { "ncacn_ip_tcp", NCACN_IP_TCP, 3,
 146                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_TCP, EPM_PROTOCOL_IP } },
 147         { "ncacn_http", NCACN_HTTP, 3,
 148                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_HTTP, EPM_PROTOCOL_IP } },
 149         { "ncadg_ip_udp", NCACN_IP_UDP, 3,
 150                 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UDP, EPM_PROTOCOL_IP } },
 151         { "ncalrpc", NCALRPC, 2,
 152                 { EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_PIPE } },
 153         { "ncacn_unix_stream", NCACN_UNIX_STREAM, 2,
 154                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_UNIX_DS } },
 155         { "ncadg_unix_dgram", NCADG_UNIX_DGRAM, 2,
 156                 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UNIX_DS } },
 157         { "ncacn_at_dsp", NCACN_AT_DSP, 3,
 158                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DSP } },
 159         { "ncadg_at_ddp", NCADG_AT_DDP, 3,
 160                 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DDP } },
 161         { "ncacn_vns_ssp", NCACN_VNS_SPP, 3,
 162                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_SPP } },
 163         { "ncacn_vns_ipc", NCACN_VNS_IPC, 3,
 164                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_IPC }, },
 165         { "ncadg_ipx", NCADG_IPX, 2,
 166                 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_IPX },
 167         },
 168         { "ncacn_spx", NCACN_SPX, 3,
 169                 /* I guess some MS programmer confused the identifier for
 170                  * EPM_PROTOCOL_UUID (0x0D or 13) with the one for
 171                  * EPM_PROTOCOL_SPX (0x13) here. -- jelmer*/
 172                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_UUID },
 173         },
 174 };
 175
 176 static const struct {
 177         const char *name;
 178         uint32_t flag;
 179 } ncacn_options[] = {
 180         {"sign", DCERPC_SIGN},
 181         {"seal", DCERPC_SEAL},
 182         {"connect", DCERPC_CONNECT},
 183         {"spnego", DCERPC_AUTH_SPNEGO},
 184         {"krb5", DCERPC_AUTH_KRB5},
 185         {"validate", DCERPC_DEBUG_VALIDATE_BOTH},
 186         {"print", DCERPC_DEBUG_PRINT_BOTH},
 187         {"padcheck", DCERPC_DEBUG_PAD_CHECK},
 188         {"bigendian", DCERPC_PUSH_BIGENDIAN}
 189 };
 190
 191 const char *epm_floor_string(TALLOC_CTX *mem_ctx, struct epm_floor *fl)
 192 {
 193         struct GUID uuid;
 194         uint16_t if_version;
 195         NTSTATUS status;
 196
 197         switch(fl->lhs.protocol) {
 198                 case EPM_PROTOCOL_UUID:
 199                         status = dcerpc_floor_get_lhs_data(fl, &uuid, &if_version);
 200                         if (NT_STATUS_IS_OK(status)) {
 201                                 /* lhs is used: UUID */
 202                                 char *uuidstr;
 203
 204                                 uuidstr = GUID_string(mem_ctx, &uuid);
 205
 206                                 if (strcasecmp(uuidstr, NDR_GUID) == 0) {
 207                                         return "NDR";
 208                                 }
 209
 210                                 return talloc_asprintf(mem_ctx, " uuid %s/0x%02x", uuidstr, if_version);
 211                         } else { /* IPX */
 212                                 return talloc_asprintf(mem_ctx, "IPX:%s",
 213                                                 data_blob_hex_string(mem_ctx, &fl->rhs.uuid.unknown));
 214                         }
 215
 216                 case EPM_PROTOCOL_NCACN:
 217                         return "RPC-C";
 218
 219                 case EPM_PROTOCOL_NCADG:
 220                         return "RPC";
 221
 222                 case EPM_PROTOCOL_NCALRPC:
 223                         return "NCALRPC";
 224
 225                 case EPM_PROTOCOL_DNET_NSP:
 226                         return "DNET/NSP";
 227
 228                 case EPM_PROTOCOL_IP:
 229                         return talloc_asprintf(mem_ctx, "IP:%s", fl->rhs.ip.ipaddr);
 230
 231                 case EPM_PROTOCOL_PIPE:
 232                         return talloc_asprintf(mem_ctx, "PIPE:%s", fl->rhs.pipe.path);
 233
 234                 case EPM_PROTOCOL_SMB:
 235                         return talloc_asprintf(mem_ctx, "SMB:%s", fl->rhs.smb.unc);
 236
 237                 case EPM_PROTOCOL_UNIX_DS:
 238                         return talloc_asprintf(mem_ctx, "Unix:%s", fl->rhs.unix_ds.path);
 239
 240                 case EPM_PROTOCOL_NETBIOS:
 241                         return talloc_asprintf(mem_ctx, "NetBIOS:%s", fl->rhs.netbios.name);
 242
 243                 case EPM_PROTOCOL_NETBEUI:
 244                         return "NETBeui";
 245
 246                 case EPM_PROTOCOL_SPX:
 247                         return "SPX";
 248
 249                 case EPM_PROTOCOL_NB_IPX:
 250                         return "NB_IPX";
 251
 252                 case EPM_PROTOCOL_HTTP:
 253                         return talloc_asprintf(mem_ctx, "HTTP:%d", fl->rhs.http.port);
 254
 255                 case EPM_PROTOCOL_TCP:
 256                         return talloc_asprintf(mem_ctx, "TCP:%d", fl->rhs.tcp.port);
 257
 258                 case EPM_PROTOCOL_UDP:
 259                         return talloc_asprintf(mem_ctx, "UDP:%d", fl->rhs.udp.port);
 260
 261                 default:
 262                         return talloc_asprintf(mem_ctx, "UNK(%02x):", fl->lhs.protocol);
 263         }
 264 }
 265
 266
 267 /*
 268   form a binding string from a binding structure
 269 */
 270 const char *dcerpc_binding_string(TALLOC_CTX *mem_ctx, const struct dcerpc_binding *b)
 271 {
 272         char *s = talloc_strdup(mem_ctx, "");
 273         int i;
 274         const char *t_name=NULL;
 275
 276         for (i=0;i<ARRAY_SIZE(transports);i++) {
 277                 if (transports[i].transport == b->transport) {
 278                         t_name = transports[i].name;
 279                 }
 280         }
 281         if (!t_name) {
 282                 return NULL;
 283         }
 284
 285         if (!GUID_all_zero(&b->object)) {
 286                 s = talloc_asprintf(s, "%s@",
 287                                     GUID_string(mem_ctx, &b->object));
 288         }
 289
 290         s = talloc_asprintf_append(s, "%s:", t_name);
 291         if (!s) return NULL;
 292
 293         if (b->host) {
 294                 s = talloc_asprintf_append(s, "%s", b->host);
 295         }
 296
 297         if (!b->endpoint && !b->options && !b->flags) {
 298                 return s;
 299         }
 300
 301         s = talloc_asprintf_append(s, "[");
 302
 303         if (b->endpoint) {
 304                 s = talloc_asprintf_append(s, "%s", b->endpoint);
 305         }
 306
 307         /* this is a *really* inefficent way of dealing with strings,
 308            but this is rarely called and the strings are always short,
 309            so I don't care */
 310         for (i=0;b->options && b->options[i];i++) {
 311                 s = talloc_asprintf_append(s, ",%s", b->options[i]);
 312                 if (!s) return NULL;
 313         }
 314
 315         for (i=0;i<ARRAY_SIZE(ncacn_options);i++) {
 316                 if (b->flags & ncacn_options[i].flag) {
 317                         s = talloc_asprintf_append(s, ",%s", ncacn_options[i].name);
 318                         if (!s) return NULL;
 319                 }
 320         }
 321
 322         s = talloc_asprintf_append(s, "]");
 323
 324         return s;
 325 }
 326
 327 /*
 328   parse a binding string into a dcerpc_binding structure
 329 */
 330 NTSTATUS dcerpc_parse_binding(TALLOC_CTX *mem_ctx, const char *s, struct dcerpc_binding **b_out)
 331 {
 332         struct dcerpc_binding *b;
 333         char *options, *type;
 334         char *p;
 335         int i, j, comma_count;
 336
 337         b = talloc(mem_ctx, struct dcerpc_binding);
 338         if (!b) {
 339                 return NT_STATUS_NO_MEMORY;
 340         }
 341
 342         b->authservice = NULL;
 343
 344         p = strchr(s, '@');
 345
 346         if (p && PTR_DIFF(p, s) == 36) { /* 36 is the length of a UUID */
 347                 NTSTATUS status;
 348
 349                 status = GUID_from_string(s, &b->object);
 350
 351                 if (NT_STATUS_IS_ERR(status)) {
 352                         DEBUG(0, ("Failed parsing UUID\n"));
 353                         return status;
 354                 }
 355
 356                 s = p + 1;
 357         } else {
 358                 ZERO_STRUCT(b->object);
 359         }
 360
 361         b->object_version = 0;
 362
 363         p = strchr(s, ':');
 364         if (!p) {
 365                 return NT_STATUS_INVALID_PARAMETER;
 366         }
 367
 368         type = talloc_strndup(mem_ctx, s, PTR_DIFF(p, s));
 369         if (!type) {
 370                 return NT_STATUS_NO_MEMORY;
 371         }
 372
 373         for (i=0;i<ARRAY_SIZE(transports);i++) {
 374                 if (strcasecmp(type, transports[i].name) == 0) {
 375                         b->transport = transports[i].transport;
 376                         break;
 377                 }
 378         }
 379         if (i==ARRAY_SIZE(transports)) {
 380                 DEBUG(0,("Unknown dcerpc transport '%s'\n", type));
 381                 return NT_STATUS_INVALID_PARAMETER;
 382         }
 383
 384         s = p+1;
 385
 386         p = strchr(s, '[');
 387         if (p) {
 388                 b->host = talloc_strndup(b, s, PTR_DIFF(p, s));
 389                 options = talloc_strdup(mem_ctx, p+1);
 390                 if (options[strlen(options)-1] != ']') {
 391                         return NT_STATUS_INVALID_PARAMETER;
 392                 }
 393                 options[strlen(options)-1] = 0;
 394         } else {
 395                 b->host = talloc_strdup(b, s);
 396                 options = NULL;
 397         }
 398
 399         if (!b->host) {
 400                 return NT_STATUS_NO_MEMORY;
 401         }
 402
 403         b->options = NULL;
 404         b->flags = 0;
 405         b->endpoint = NULL;
 406
 407         if (!options) {
 408                 *b_out = b;
 409                 return NT_STATUS_OK;
 410         }
 411
 412         comma_count = count_chars(options, ',');
 413
 414         b->options = talloc_array(b, const char *, comma_count+2);
 415         if (!b->options) {
 416                 return NT_STATUS_NO_MEMORY;
 417         }
 418
 419         for (i=0; (p = strchr(options, ',')); i++) {
 420                 b->options[i] = talloc_strndup(b, options, PTR_DIFF(p, options));
 421                 if (!b->options[i]) {
 422                         return NT_STATUS_NO_MEMORY;
 423                 }
 424                 options = p+1;
 425         }
 426         b->options[i] = options;
 427         b->options[i+1] = NULL;
 428
 429         /* some options are pre-parsed for convenience */
 430         for (i=0;b->options[i];i++) {
 431                 for (j=0;j<ARRAY_SIZE(ncacn_options);j++) {
 432                         if (strcasecmp(ncacn_options[j].name, b->options[i]) == 0) {
 433                                 int k;
 434                                 b->flags |= ncacn_options[j].flag;
 435                                 for (k=i;b->options[k];k++) {
 436                                         b->options[k] = b->options[k+1];
 437                                 }
 438                                 i--;
 439                                 break;
 440                         }
 441                 }
 442         }
 443
 444         if (b->options[0]) {
 445                 /* Endpoint is first option */
 446                 b->endpoint = b->options[0];
 447                 if (strlen(b->endpoint) == 0) b->endpoint = NULL;
 448
 449                 for (i=0;b->options[i];i++) {
 450                         b->options[i] = b->options[i+1];
 451                 }
 452         }
 453
 454         if (b->options[0] == NULL)
 455                 b->options = NULL;
 456
 457         *b_out = b;
 458         return NT_STATUS_OK;
 459 }
 460
 461 NTSTATUS dcerpc_floor_get_lhs_data(struct epm_floor *floor, struct GUID *uuid, uint16_t *if_version)
 462 {
 463         TALLOC_CTX *mem_ctx = talloc_init("floor_get_lhs_data");
 464         struct ndr_pull *ndr = ndr_pull_init_blob(&floor->lhs.lhs_data, mem_ctx);
 465         NTSTATUS status;
 466
 467         ndr->flags |= LIBNDR_FLAG_NOALIGN;
 468
 469         status = ndr_pull_GUID(ndr, NDR_SCALARS | NDR_BUFFERS, uuid);
 470         if (NT_STATUS_IS_ERR(status)) {
 471                 talloc_free(mem_ctx);
 472                 return status;
 473         }
 474
 475         status = ndr_pull_uint16(ndr, NDR_SCALARS, if_version);
 476
 477         talloc_free(mem_ctx);
 478
 479         return status;
 480 }
 481
 482 static DATA_BLOB dcerpc_floor_pack_lhs_data(TALLOC_CTX *mem_ctx, struct GUID *uuid, uint32_t if_version)
 483 {
 484         struct ndr_push *ndr = ndr_push_init_ctx(mem_ctx);
 485
 486         ndr->flags |= LIBNDR_FLAG_NOALIGN;
 487
 488         ndr_push_GUID(ndr, NDR_SCALARS | NDR_BUFFERS, uuid);
 489         ndr_push_uint16(ndr, NDR_SCALARS, if_version);
 490
 491         return ndr_push_blob(ndr);
 492 }
 493
 494 const char *dcerpc_floor_get_rhs_data(TALLOC_CTX *mem_ctx, struct epm_floor *floor)
 495 {
 496         switch (floor->lhs.protocol) {
 497         case EPM_PROTOCOL_TCP:
 498                 if (floor->rhs.tcp.port == 0) return NULL;
 499                 return talloc_asprintf(mem_ctx, "%d", floor->rhs.tcp.port);
 500
 501         case EPM_PROTOCOL_UDP:
 502                 if (floor->rhs.udp.port == 0) return NULL;
 503                 return talloc_asprintf(mem_ctx, "%d", floor->rhs.udp.port);
 504
 505         case EPM_PROTOCOL_HTTP:
 506                 if (floor->rhs.http.port == 0) return NULL;
 507                 return talloc_asprintf(mem_ctx, "%d", floor->rhs.http.port);
 508
 509         case EPM_PROTOCOL_IP:
 510                 return talloc_strdup(mem_ctx, floor->rhs.ip.ipaddr);
 511
 512         case EPM_PROTOCOL_NCACN:
 513                 return NULL;
 514
 515         case EPM_PROTOCOL_NCADG:
 516                 return NULL;
 517
 518         case EPM_PROTOCOL_SMB:
 519                 if (strlen(floor->rhs.smb.unc) == 0) return NULL;
 520                 return talloc_strdup(mem_ctx, floor->rhs.smb.unc);
 521
 522         case EPM_PROTOCOL_PIPE:
 523                 if (strlen(floor->rhs.pipe.path) == 0) return NULL;
 524                 return talloc_strdup(mem_ctx, floor->rhs.pipe.path);
 525
 526         case EPM_PROTOCOL_NETBIOS:
 527                 if (strlen(floor->rhs.netbios.name) == 0) return NULL;
 528                 return talloc_strdup(mem_ctx, floor->rhs.netbios.name);
 529
 530         case EPM_PROTOCOL_NCALRPC:
 531                 return NULL;
 532
 533         case EPM_PROTOCOL_VINES_SPP:
 534                 return talloc_asprintf(mem_ctx, "%d", floor->rhs.vines_spp.port);
 535
 536         case EPM_PROTOCOL_VINES_IPC:
 537                 return talloc_asprintf(mem_ctx, "%d", floor->rhs.vines_ipc.port);
 538
 539         case EPM_PROTOCOL_STREETTALK:
 540                 return talloc_strdup(mem_ctx, floor->rhs.streettalk.streettalk);
 541
 542         case EPM_PROTOCOL_UNIX_DS:
 543                 if (strlen(floor->rhs.unix_ds.path) == 0) return NULL;
 544                 return talloc_strdup(mem_ctx, floor->rhs.unix_ds.path);
 545
 546         case EPM_PROTOCOL_NULL:
 547                 return NULL;
 548
 549         default:
 550                 DEBUG(0,("Unsupported lhs protocol %d\n", floor->lhs.protocol));
 551                 break;
 552         }
 553
 554         return NULL;
 555 }
 556
 557 static NTSTATUS dcerpc_floor_set_rhs_data(TALLOC_CTX *mem_ctx, struct epm_floor *floor,  const char *data)
 558 {
 559         switch (floor->lhs.protocol) {
 560         case EPM_PROTOCOL_TCP:
 561                 floor->rhs.tcp.port = atoi(data);
 562                 return NT_STATUS_OK;
 563
 564         case EPM_PROTOCOL_UDP:
 565                 floor->rhs.udp.port = atoi(data);
 566                 return NT_STATUS_OK;
 567
 568         case EPM_PROTOCOL_HTTP:
 569                 floor->rhs.http.port = atoi(data);
 570                 return NT_STATUS_OK;
 571
 572         case EPM_PROTOCOL_IP:
 573                 floor->rhs.ip.ipaddr = talloc_strdup(mem_ctx, data);
 574                 NT_STATUS_HAVE_NO_MEMORY(floor->rhs.ip.ipaddr);
 575                 return NT_STATUS_OK;
 576
 577         case EPM_PROTOCOL_NCACN:
 578                 floor->rhs.ncacn.minor_version = 0;
 579                 return NT_STATUS_OK;
 580
 581         case EPM_PROTOCOL_NCADG:
 582                 floor->rhs.ncadg.minor_version = 0;
 583                 return NT_STATUS_OK;
 584
 585         case EPM_PROTOCOL_SMB:
 586                 floor->rhs.smb.unc = talloc_strdup(mem_ctx, data);
 587                 NT_STATUS_HAVE_NO_MEMORY(floor->rhs.smb.unc);
 588                 return NT_STATUS_OK;
 589
 590         case EPM_PROTOCOL_PIPE:
 591                 floor->rhs.pipe.path = talloc_strdup(mem_ctx, data);
 592                 NT_STATUS_HAVE_NO_MEMORY(floor->rhs.pipe.path);
 593                 return NT_STATUS_OK;
 594
 595         case EPM_PROTOCOL_NETBIOS:
 596                 floor->rhs.netbios.name = talloc_strdup(mem_ctx, data);
 597                 NT_STATUS_HAVE_NO_MEMORY(floor->rhs.netbios.name);
 598                 return NT_STATUS_OK;
 599
 600         case EPM_PROTOCOL_NCALRPC:
 601                 return NT_STATUS_OK;
 602
 603         case EPM_PROTOCOL_VINES_SPP:
 604                 floor->rhs.vines_spp.port = atoi(data);
 605                 return NT_STATUS_OK;
 606
 607         case EPM_PROTOCOL_VINES_IPC:
 608                 floor->rhs.vines_ipc.port = atoi(data);
 609                 return NT_STATUS_OK;
 610
 611         case EPM_PROTOCOL_STREETTALK:
 612                 floor->rhs.streettalk.streettalk = talloc_strdup(mem_ctx, data);
 613                 NT_STATUS_HAVE_NO_MEMORY(floor->rhs.streettalk.streettalk);
 614                 return NT_STATUS_OK;
 615
 616         case EPM_PROTOCOL_UNIX_DS:
 617                 floor->rhs.unix_ds.path = talloc_strdup(mem_ctx, data);
 618                 NT_STATUS_HAVE_NO_MEMORY(floor->rhs.unix_ds.path);
 619                 return NT_STATUS_OK;
 620
 621         case EPM_PROTOCOL_NULL:
 622                 return NT_STATUS_OK;
 623
 624         default:
 625                 DEBUG(0,("Unsupported lhs protocol %d\n", floor->lhs.protocol));
 626                 break;
 627         }
 628
 629         return NT_STATUS_NOT_SUPPORTED;
 630 }
 631
 632 enum dcerpc_transport_t dcerpc_transport_by_endpoint_protocol(int prot)
 633 {
 634         int i;
 635
 636         /* Find a transport that has 'prot' as 4th protocol */
 637         for (i=0;i<ARRAY_SIZE(transports);i++) {
 638                 if (transports[i].num_protocols >= 2 &&
 639                         transports[i].protseq[1] == prot) {
 640                         return transports[i].transport;
 641                 }
 642         }
 643
 644         /* Unknown transport */
 645         return -1;
 646 }
 647
 648 enum dcerpc_transport_t dcerpc_transport_by_tower(struct epm_tower *tower)
 649 {
 650         int i;
 651
 652         /* Find a transport that matches this tower */
 653         for (i=0;i<ARRAY_SIZE(transports);i++) {
 654                 int j;
 655                 if (transports[i].num_protocols != tower->num_floors - 2) {
 656                         continue;
 657                 }
 658
 659                 for (j = 0; j < transports[i].num_protocols; j++) {
 660                         if (transports[i].protseq[j] != tower->floors[j+2].lhs.protocol) {
 661                                 break;
 662                         }
 663                 }
 664
 665                 if (j == transports[i].num_protocols) {
 666                         return transports[i].transport;
 667                 }
 668         }
 669
 670         /* Unknown transport */
 671         return -1;
 672 }
 673
 674 NTSTATUS dcerpc_binding_from_tower(TALLOC_CTX *mem_ctx, struct epm_tower *tower, struct dcerpc_binding **b_out)
 675 {
 676         NTSTATUS status;
 677         struct dcerpc_binding *binding;
 678
 679         binding = talloc(mem_ctx, struct dcerpc_binding);
 680         NT_STATUS_HAVE_NO_MEMORY(binding);
 681
 682         ZERO_STRUCT(binding->object);
 683         binding->options = NULL;
 684         binding->host = NULL;
 685         binding->flags = 0;
 686
 687         binding->transport = dcerpc_transport_by_tower(tower);
 688
 689         if (binding->transport == -1) {
 690                 return NT_STATUS_NOT_SUPPORTED;
 691         }
 692
 693         if (tower->num_floors < 1) {
 694                 return NT_STATUS_OK;
 695         }
 696
 697         /* Set object uuid */
 698         status = dcerpc_floor_get_lhs_data(&tower->floors[0], &binding->object, &binding->object_version);
 699
 700         if (!NT_STATUS_IS_OK(status)) {
 701                 DEBUG(1, ("Error pulling object uuid and version: %s", nt_errstr(status)));
 702                 return status;
 703         }
 704
 705         /* Ignore floor 1, it contains the NDR version info */
 706
 707         binding->options = NULL;
 708
 709         /* Set endpoint */
 710         if (tower->num_floors >= 4) {
 711                 binding->endpoint = dcerpc_floor_get_rhs_data(mem_ctx, &tower->floors[3]);
 712         } else {
 713                 binding->endpoint = NULL;
 714         }
 715
 716         /* Set network address */
 717         if (tower->num_floors >= 5) {
 718                 binding->host = dcerpc_floor_get_rhs_data(mem_ctx, &tower->floors[4]);
 719         }
 720         *b_out = binding;
 721         return NT_STATUS_OK;
 722 }
 723
 724 NTSTATUS dcerpc_binding_build_tower(TALLOC_CTX *mem_ctx, struct dcerpc_binding *binding, struct epm_tower *tower)
 725 {
 726         const enum epm_protocol *protseq = NULL;
 727         int num_protocols = -1, i;
 728         struct GUID ndr_guid;
 729         NTSTATUS status;
 730
 731         /* Find transport */
 732         for (i=0;i<ARRAY_SIZE(transports);i++) {
 733                 if (transports[i].transport == binding->transport) {
 734                         protseq = transports[i].protseq;
 735                         num_protocols = transports[i].num_protocols;
 736                         break;
 737                 }
 738         }
 739
 740         if (num_protocols == -1) {
 741                 DEBUG(0, ("Unable to find transport with id '%d'\n", binding->transport));
 742                 return NT_STATUS_UNSUCCESSFUL;
 743         }
 744
 745         tower->num_floors = 2 + num_protocols;
 746         tower->floors = talloc_array(mem_ctx, struct epm_floor, tower->num_floors);
 747
 748         /* Floor 0 */
 749         tower->floors[0].lhs.protocol = EPM_PROTOCOL_UUID;
 750
 751         tower->floors[0].lhs.lhs_data = dcerpc_floor_pack_lhs_data(mem_ctx, &binding->object, binding->object_version);
 752
 753         tower->floors[0].rhs.uuid.unknown = data_blob_talloc_zero(mem_ctx, 2);
 754
 755         /* Floor 1 */
 756         tower->floors[1].lhs.protocol = EPM_PROTOCOL_UUID;
 757
 758         status = GUID_from_string(NDR_GUID, &ndr_guid);
 759         if (NT_STATUS_IS_ERR(status)) {
 760                 return status;
 761         }
 762
 763         tower->floors[1].lhs.lhs_data = dcerpc_floor_pack_lhs_data(mem_ctx, &ndr_guid, NDR_GUID_VERSION);
 764
 765         tower->floors[1].rhs.uuid.unknown = data_blob_talloc_zero(mem_ctx, 2);
 766
 767         /* Floor 2 to num_protocols */
 768         for (i = 0; i < num_protocols; i++) {
 769                 tower->floors[2 + i].lhs.protocol = protseq[i];
 770                 tower->floors[2 + i].lhs.lhs_data = data_blob_talloc(mem_ctx, NULL, 0);
 771                 ZERO_STRUCT(tower->floors[2 + i].rhs);
 772                 dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[2 + i], "");
 773         }
 774
 775         /* The 4th floor contains the endpoint */
 776         if (num_protocols >= 2 && binding->endpoint) {
 777                 status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[3], binding->endpoint);
 778                 if (NT_STATUS_IS_ERR(status)) {
 779                         return status;
 780                 }
 781         }
 782
 783         /* The 5th contains the network address */
 784         if (num_protocols >= 3 && binding->host) {
 785                 status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[4], binding->host);
 786                 if (NT_STATUS_IS_ERR(status)) {
 787                         return status;
 788                 }
 789         }
 790
 791         return NT_STATUS_OK;
 792 }
 793
 794 NTSTATUS dcerpc_epm_map_binding(TALLOC_CTX *mem_ctx, struct dcerpc_binding *binding,
 795                                 const char *uuid, uint_t version)
 796 {
 797         struct dcerpc_pipe *p;
 798         NTSTATUS status;
 799         struct epm_Map r;
 800         struct policy_handle handle;
 801         struct GUID guid;
 802         struct epm_twr_t twr, *twr_r;
 803         struct dcerpc_binding *epmapper_binding;
 804         const struct dcerpc_interface_table *table = idl_iface_by_uuid(uuid);
 805         int i;
 806
 807         struct cli_credentials *anon_creds
 808                 = cli_credentials_init(mem_ctx);
 809         cli_credentials_set_conf(anon_creds);
 810         cli_credentials_set_anonymous(anon_creds);
 811
 812         /* First, check if there is a default endpoint specified in the IDL */
 813
 814         if (table) {
 815                 struct dcerpc_binding *default_binding;
 816
 817                 binding->authservice = talloc_strdup(binding, table->authservices->names[0]);
 818
 819                 /* Find one of the default pipes for this interface */
 820                 for (i = 0; i < table->endpoints->count; i++) {
 821                         status = dcerpc_parse_binding(mem_ctx, table->endpoints->names[i], &default_binding);
 822
 823                         if (NT_STATUS_IS_OK(status)) {
 824                                 if (default_binding->transport == binding->transport && default_binding->endpoint) {
 825                                         binding->endpoint = talloc_reference(binding, default_binding->endpoint);
 826                                         talloc_free(default_binding);
 827                                         return NT_STATUS_OK;
 828                                 } else {
 829                                         talloc_free(default_binding);
 830                                 }
 831                         }
 832                 }
 833         }
 834
 835         epmapper_binding = talloc_zero(mem_ctx, struct dcerpc_binding);
 836         if (!epmapper_binding) {
 837                 return NT_STATUS_NO_MEMORY;
 838         }
 839
 840         epmapper_binding->transport = binding->transport;
 841         epmapper_binding->host = talloc_reference(epmapper_binding,
 842                                                   binding->host);
 843         epmapper_binding->options = NULL;
 844         epmapper_binding->flags = 0;
 845         epmapper_binding->endpoint = NULL;
 846         epmapper_binding->authservice = NULL;
 847
 848         status = dcerpc_pipe_connect_b(mem_ctx,
 849                                        &p,
 850                                        epmapper_binding,
 851                                        DCERPC_EPMAPPER_UUID,
 852                                        DCERPC_EPMAPPER_VERSION,
 853                                        anon_creds);
 854
 855         if (!NT_STATUS_IS_OK(status)) {
 856                 return status;
 857         }
 858
 859         ZERO_STRUCT(handle);
 860         ZERO_STRUCT(guid);
 861
 862         status = GUID_from_string(uuid, &binding->object);
 863         if (NT_STATUS_IS_ERR(status)) {
 864                 return status;
 865         }
 866
 867         binding->object_version = version;
 868
 869         status = dcerpc_binding_build_tower(p, binding, &twr.tower);
 870         if (NT_STATUS_IS_ERR(status)) {
 871                 return status;
 872         }
 873
 874         /* with some nice pretty paper around it of course */
 875         r.in.object = &guid;
 876         r.in.map_tower = &twr;
 877         r.in.entry_handle = &handle;
 878         r.in.max_towers = 1;
 879         r.out.entry_handle = &handle;
 880
 881         status = dcerpc_epm_Map(p, p, &r);
 882         if (!NT_STATUS_IS_OK(status)) {
 883                 talloc_free(p);
 884                 return status;
 885         }
 886         if (r.out.result != 0 || r.out.num_towers != 1) {
 887                 talloc_free(p);
 888                 return NT_STATUS_PORT_UNREACHABLE;
 889         }
 890
 891         twr_r = r.out.towers[0].twr;
 892         if (!twr_r) {
 893                 talloc_free(p);
 894                 return NT_STATUS_PORT_UNREACHABLE;
 895         }
 896
 897         if (twr_r->tower.num_floors != twr.tower.num_floors ||
 898             twr_r->tower.floors[3].lhs.protocol != twr.tower.floors[3].lhs.protocol) {
 899                 talloc_free(p);
 900                 return NT_STATUS_PORT_UNREACHABLE;
 901         }
 902
 903         binding->endpoint = talloc_reference(binding, dcerpc_floor_get_rhs_data(mem_ctx, &twr_r->tower.floors[3]));
 904
 905         talloc_free(p);
 906
 907         return NT_STATUS_OK;
 908 }
 909
 910
 911 /*
 912    perform an authenticated bind if needed
 913 */
 914 NTSTATUS dcerpc_pipe_auth(struct dcerpc_pipe *p,
 915                           struct dcerpc_binding *binding,
 916                           const char *pipe_uuid,
 917                           uint32_t pipe_version,
 918                           struct cli_credentials *credentials)
 919 {
 920         NTSTATUS status;
 921         TALLOC_CTX *tmp_ctx;
 922         tmp_ctx = talloc_new(p);
 923
 924         p->conn->flags = binding->flags;
 925
 926         /* remember the binding string for possible secondary connections */
 927         p->conn->binding_string = dcerpc_binding_string(p, binding);
 928
 929         if (!cli_credentials_is_anonymous(credentials) &&
 930                 (binding->flags & DCERPC_SCHANNEL) &&
 931                 !cli_credentials_get_netlogon_creds(credentials)) {
 932
 933                 /* If we don't already have netlogon credentials for
 934                  * the schannel bind, then we have to get these
 935                  * first */
 936                 status = dcerpc_bind_auth_schannel(tmp_ctx,
 937                                                    p, pipe_uuid, pipe_version,
 938                                                    credentials);
 939         } else if (!cli_credentials_is_anonymous(credentials) &&
 940                 !(binding->transport == NCACN_NP &&
 941                   !(binding->flags & DCERPC_SIGN) &&
 942                   !(binding->flags & DCERPC_SEAL))) {
 943
 944                 /* Perform an authenticated DCE-RPC bind, except where
 945                  * we ask for a connection on NCACN_NP, and that
 946                  * connection is not signed or sealed.  For that case
 947                  * we rely on the already authenicated CIFS connection
 948                  */
 949
 950                 uint8_t auth_type;
 951                 if (binding->flags & DCERPC_AUTH_SPNEGO) {
 952                         auth_type = DCERPC_AUTH_TYPE_SPNEGO;
 953                 } else if (binding->flags & DCERPC_AUTH_KRB5) {
 954                         auth_type = DCERPC_AUTH_TYPE_KRB5;
 955                 } else if (binding->flags & DCERPC_SCHANNEL) {
 956                         auth_type = DCERPC_AUTH_TYPE_SCHANNEL;
 957                 } else {
 958                         auth_type = DCERPC_AUTH_TYPE_NTLMSSP;
 959                 }
 960
 961                 status = dcerpc_bind_auth_password(p, pipe_uuid, pipe_version,
 962                                                    credentials, auth_type,
 963                                                    binding->authservice);
 964         } else {
 965                 status = dcerpc_bind_auth_none(p, pipe_uuid, pipe_version);
 966         }
 967
 968         if (!NT_STATUS_IS_OK(status)) {
 969                 DEBUG(0,("Failed to bind to uuid %s - %s\n", pipe_uuid, nt_errstr(status)));
 970         }
 971         talloc_free(tmp_ctx);
 972         return status;
 973 }
 974
 975
 976 /* open a rpc connection to a rpc pipe on SMB using the binding
 977    structure to determine the endpoint and options */
 978 static NTSTATUS dcerpc_pipe_connect_ncacn_np(TALLOC_CTX *tmp_ctx,
 979                                              struct dcerpc_pipe *p,
 980                                              struct dcerpc_binding *binding,
 981                                              const char *pipe_uuid,
 982                                              uint32_t pipe_version,
 983                                              struct cli_credentials *credentials)
 984 {
 985         NTSTATUS status;
 986         struct smbcli_state *cli;
 987         const char *pipe_name = NULL;
 988
 989         if (binding->flags & DCERPC_SCHANNEL) {
 990                 struct cli_credentials *anon_creds
 991                         = cli_credentials_init(tmp_ctx);
 992                 cli_credentials_set_anonymous(anon_creds);
 993                 cli_credentials_guess(anon_creds);
 994                 status = smbcli_full_connection(p->conn, &cli,
 995                                                 binding->host,
 996                                                 "IPC$", NULL,
 997                                                 anon_creds);
 998         } else {
 999                 status = smbcli_full_connection(p->conn, &cli,
1000                                                 binding->host,
1001                                                 "IPC$", NULL,
1002                                                 credentials);
1003         }
1004         if (!NT_STATUS_IS_OK(status)) {
1005                 DEBUG(0,("Failed to connect to %s - %s\n", binding->host, nt_errstr(status)));
1006                 return status;
1007         }
1008
1009         /* Look up identifier using the epmapper */
1010         if (!binding->endpoint) {
1011                 status = dcerpc_epm_map_binding(tmp_ctx, binding, pipe_uuid, pipe_version);
1012                 if (!NT_STATUS_IS_OK(status)) {
1013                         DEBUG(0,("Failed to map DCERPC/TCP NCACN_NP pipe for '%s' - %s\n",
1014                                  pipe_uuid, nt_errstr(status)));
1015                         return status;
1016                 }
1017                 DEBUG(1,("Mapped to DCERPC/NP pipe %s\n", binding->endpoint));
1018         }
1019
1020         pipe_name = binding->endpoint;
1021
1022         status = dcerpc_pipe_open_smb(p->conn, cli->tree, pipe_name);
1023         if (!NT_STATUS_IS_OK(status)) {
1024                 DEBUG(0,("Failed to open pipe %s - %s\n", pipe_name, nt_errstr(status)));
1025                 return status;
1026         }
1027
1028         return NT_STATUS_OK;
1029 }
1030
1031 /* open a rpc connection to a rpc pipe on SMP using the binding
1032    structure to determine the endpoint and options */
1033 static NTSTATUS dcerpc_pipe_connect_ncalrpc(TALLOC_CTX *tmp_ctx,
1034                                             struct dcerpc_pipe *p,
1035                                             struct dcerpc_binding *binding,
1036                                             const char *pipe_uuid,
1037                                             uint32_t pipe_version)
1038 {
1039         NTSTATUS status;
1040
1041         /* Look up identifier using the epmapper */
1042         if (!binding->endpoint) {
1043                 status = dcerpc_epm_map_binding(tmp_ctx, binding, pipe_uuid, pipe_version);
1044                 if (!NT_STATUS_IS_OK(status)) {
1045                         DEBUG(0,("Failed to map DCERPC/TCP NCALRPC identifier for '%s' - %s\n",
1046                                  pipe_uuid, nt_errstr(status)));
1047                         return status;
1048                 }
1049                 DEBUG(1,("Mapped to DCERPC/LRPC identifier %s\n", binding->endpoint));
1050         }
1051
1052         status = dcerpc_pipe_open_pipe(p->conn, binding->endpoint);
1053         if (!NT_STATUS_IS_OK(status)) {
1054                 DEBUG(0,("Failed to open ncalrpc pipe '%s' - %s\n",
1055                          binding->endpoint, nt_errstr(status)));
1056                 return status;
1057         }
1058
1059         return status;
1060 }
1061
1062
1063
1064 /* open a rpc connection to a rpc pipe on SMP using the binding
1065    structure to determine the endpoint and options */
1066 static NTSTATUS dcerpc_pipe_connect_ncacn_unix_stream(TALLOC_CTX *tmp_ctx,
1067                                                       struct dcerpc_pipe *p,
1068                                                       struct dcerpc_binding *binding,
1069                                                       const char *pipe_uuid,
1070                                                       uint32_t pipe_version)
1071 {
1072         NTSTATUS status;
1073
1074         if (!binding->endpoint) {
1075                 DEBUG(0, ("Path to unix socket not specified\n"));
1076                 return NT_STATUS_INVALID_PARAMETER;
1077         }
1078
1079         status = dcerpc_pipe_open_unix_stream(p->conn, binding->endpoint);
1080         if (!NT_STATUS_IS_OK(status)) {
1081                 DEBUG(0,("Failed to open unix socket %s - %s\n",
1082                          binding->endpoint, nt_errstr(status)));
1083                 talloc_free(p);
1084                 return status;
1085         }
1086
1087         return status;
1088 }
1089
1090 /* open a rpc connection to a rpc pipe on TCP/IP sockets using the binding
1091    structure to determine the endpoint and options */
1092 static NTSTATUS dcerpc_pipe_connect_ncacn_ip_tcp(TALLOC_CTX *tmp_ctx,
1093                                                  struct dcerpc_pipe *p,
1094                                                  struct dcerpc_binding *binding,
1095                                                  const char *pipe_uuid,
1096                                                  uint32_t pipe_version)
1097 {
1098         NTSTATUS status;
1099         uint32_t port = 0;
1100
1101         if (!binding->endpoint) {
1102                 status = dcerpc_epm_map_binding(tmp_ctx, binding,
1103                                                 pipe_uuid, pipe_version);
1104                 if (!NT_STATUS_IS_OK(status)) {
1105                         DEBUG(0,("Failed to map DCERPC/TCP port for '%s' - %s\n",
1106                                  pipe_uuid, nt_errstr(status)));
1107                         return status;
1108                 }
1109                 DEBUG(1,("Mapped to DCERPC/TCP port %s\n", binding->endpoint));
1110         }
1111
1112         port = atoi(binding->endpoint);
1113
1114         status = dcerpc_pipe_open_tcp(p->conn, binding->host, port);
1115         if (!NT_STATUS_IS_OK(status)) {
1116                 DEBUG(0,("Failed to connect to %s:%d - %s\n",
1117                          binding->host, port, nt_errstr(status)));
1118                 return status;
1119         }
1120
1121         return status;
1122 }
1123
1124
1125 /* open a rpc connection to a rpc pipe, using the specified
1126    binding structure to determine the endpoint and options */
1127 NTSTATUS dcerpc_pipe_connect_b(TALLOC_CTX *parent_ctx,
1128                                struct dcerpc_pipe **pp,
1129                                struct dcerpc_binding *binding,
1130                                const char *pipe_uuid,
1131                                uint32_t pipe_version,
1132                                struct cli_credentials *credentials)
1133 {
1134         NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
1135         struct dcerpc_pipe *p;
1136
1137         TALLOC_CTX *tmp_ctx;
1138
1139         (*pp) = NULL;
1140
1141         p = dcerpc_pipe_init(parent_ctx);
1142         if (p == NULL) {
1143                 return NT_STATUS_NO_MEMORY;
1144         }
1145         tmp_ctx = talloc_named(p, 0, "dcerpc_pipe_connect_b tmp_ctx");
1146
1147         switch (binding->transport) {
1148         case NCACN_NP:
1149                 status = dcerpc_pipe_connect_ncacn_np(tmp_ctx,
1150                                                       p, binding, pipe_uuid, pipe_version, credentials);
1151                 break;
1152         case NCACN_IP_TCP:
1153                 status = dcerpc_pipe_connect_ncacn_ip_tcp(tmp_ctx,
1154                                                           p, binding, pipe_uuid, pipe_version);
1155                 break;
1156         case NCACN_UNIX_STREAM:
1157                 status = dcerpc_pipe_connect_ncacn_unix_stream(tmp_ctx,
1158                                                                p, binding, pipe_uuid, pipe_version);
1159                 break;
1160         case NCALRPC:
1161                 status = dcerpc_pipe_connect_ncalrpc(tmp_ctx,
1162                                                      p, binding, pipe_uuid, pipe_version);
1163                 break;
1164         default:
1165                 return NT_STATUS_NOT_SUPPORTED;
1166         }
1167
1168         if (!NT_STATUS_IS_OK(status)) {
1169                 talloc_free(p);
1170                 return status;
1171         }
1172
1173         status = dcerpc_pipe_auth(p, binding, pipe_uuid, pipe_version, credentials);
1174         if (!NT_STATUS_IS_OK(status)) {
1175                 talloc_free(p);
1176                 return status;
1177         }
1178         *pp = p;
1179         talloc_free(tmp_ctx);
1180
1181         return status;
1182 }
1183
1184
1185 /* open a rpc connection to a rpc pipe, using the specified string
1186    binding to determine the endpoint and options */
1187 NTSTATUS dcerpc_pipe_connect(TALLOC_CTX *parent_ctx,
1188                              struct dcerpc_pipe **pp,
1189                              const char *binding,
1190                              const char *pipe_uuid,
1191                              uint32_t pipe_version,
1192                              struct cli_credentials *credentials)
1193 {
1194         struct dcerpc_binding *b;
1195         NTSTATUS status;
1196         TALLOC_CTX *tmp_ctx;
1197
1198         tmp_ctx = talloc_named(parent_ctx, 0, "dcerpc_pipe_connect tmp_ctx");
1199         if (!tmp_ctx) {
1200                 return NT_STATUS_NO_MEMORY;
1201         }
1202
1203         status = dcerpc_parse_binding(tmp_ctx, binding, &b);
1204         if (!NT_STATUS_IS_OK(status)) {
1205                 DEBUG(0,("Failed to parse dcerpc binding '%s'\n", binding));
1206                 talloc_free(tmp_ctx);
1207                 return status;
1208         }
1209
1210         DEBUG(3,("Using binding %s\n", dcerpc_binding_string(tmp_ctx, b)));
1211
1212         status = dcerpc_pipe_connect_b(tmp_ctx,
1213                                        pp, b, pipe_uuid, pipe_version, credentials);
1214
1215         if (NT_STATUS_IS_OK(status)) {
1216                 *pp = talloc_reference(parent_ctx, *pp);
1217         }
1218         talloc_free(tmp_ctx);
1219
1220         return status;
1221 }
1222
1223
1224 /*
1225   create a secondary dcerpc connection from a primary connection
1226
1227   if the primary is a SMB connection then the secondary connection
1228   will be on the same SMB connection, but use a new fnum
1229 */
1230 NTSTATUS dcerpc_secondary_connection(struct dcerpc_pipe *p, struct dcerpc_pipe **p2,
1231                                      struct dcerpc_binding *b)
1232
1233
1234 {
1235         struct smbcli_tree *tree;
1236         NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
1237
1238         (*p2) = dcerpc_pipe_init(p);
1239         if (*p2 == NULL) {
1240                 return NT_STATUS_NO_MEMORY;
1241         }
1242
1243         switch (p->conn->transport.transport) {
1244         case NCACN_NP:
1245                 tree = dcerpc_smb_tree(p->conn);
1246                 if (!tree) {
1247                         return NT_STATUS_INVALID_PARAMETER;
1248                 }
1249                 status = dcerpc_pipe_open_smb((*p2)->conn, tree, b->endpoint);
1250                 break;
1251
1252         case NCACN_IP_TCP:
1253                 status = dcerpc_pipe_open_tcp((*p2)->conn, b->host, atoi(b->endpoint));
1254                 break;
1255
1256         case NCALRPC:
1257                 status = dcerpc_pipe_open_pipe((*p2)->conn, b->endpoint);
1258                 break;
1259
1260         default:
1261                 return NT_STATUS_NOT_SUPPORTED;
1262         }
1263
1264         if (!NT_STATUS_IS_OK(status)) {
1265                 talloc_free(*p2);
1266                 return status;
1267         }
1268
1269         (*p2)->conn->flags = p->conn->flags;
1270
1271         return NT_STATUS_OK;
1272 }
1273
1274 NTSTATUS dcerpc_generic_session_key(struct dcerpc_connection *c,
1275                                     DATA_BLOB *session_key)
1276 {
1277         /* this took quite a few CPU cycles to find ... */
1278         session_key->data = discard_const_p(unsigned char, "SystemLibraryDTC");
1279         session_key->length = 16;
1280         return NT_STATUS_OK;
1281 }
1282
1283 /*
1284   fetch the user session key - may be default (above) or the SMB session key
1285 */
1286 NTSTATUS dcerpc_fetch_session_key(struct dcerpc_pipe *p,
1287                                   DATA_BLOB *session_key)
1288 {
1289         return p->conn->security_state.session_key(p->conn, session_key);
1290 }
1291
1292
1293 /*
1294   log a rpc packet in a format suitable for ndrdump. This is especially useful
1295   for sealed packets, where ethereal cannot easily see the contents
1296
1297   this triggers on a debug level of >= 10
1298 */
1299 void dcerpc_log_packet(const struct dcerpc_interface_table *ndr,
1300                        uint32_t opnum, uint32_t flags, DATA_BLOB *pkt)
1301 {
1302         const int num_examples = 20;
1303         int i;
1304
1305         if (DEBUGLEVEL < 10) return;
1306
1307         for (i=0;i<num_examples;i++) {
1308                 char *name=NULL;
1309                 asprintf(&name, "%s/rpclog/%s-%u.%d.%s",
1310                          lp_lockdir(), ndr->name, opnum, i,
1311                          (flags&NDR_IN)?"in":"out");
1312                 if (name == NULL) {
1313                         return;
1314                 }
1315                 if (!file_exist(name)) {
1316                         if (file_save(name, pkt->data, pkt->length)) {
1317                                 DEBUG(10,("Logged rpc packet to %s\n", name));
1318                         }
1319                         free(name);
1320                         break;
1321                 }
1322                 free(name);
1323         }
1324 }
1325
1326
1327
1328 /*
1329   create a secondary context from a primary connection
1330
1331   this uses dcerpc_alter_context() to create a new dcerpc context_id
1332 */
1333 NTSTATUS dcerpc_secondary_context(struct dcerpc_pipe *p,
1334                                   struct dcerpc_pipe **pp2,
1335                                   const char *pipe_uuid,
1336                                   uint32_t pipe_version)
1337 {
1338         NTSTATUS status;
1339         struct dcerpc_pipe *p2;
1340
1341         p2 = talloc_zero(p, struct dcerpc_pipe);
1342         if (p2 == NULL) {
1343                 return NT_STATUS_NO_MEMORY;
1344         }
1345         p2->conn = talloc_reference(p2, p->conn);
1346
1347         p2->context_id = ++p->conn->next_context_id;
1348
1349         status = GUID_from_string(pipe_uuid, &p2->syntax.uuid);
1350         if (!NT_STATUS_IS_OK(status)) {
1351                 talloc_free(p2);
1352                 return status;
1353         }
1354         p2->syntax.if_version = pipe_version;
1355
1356         status = GUID_from_string(NDR_GUID, &p2->transfer_syntax.uuid);
1357         if (!NT_STATUS_IS_OK(status)) {
1358                 talloc_free(p2);
1359                 return status;
1360         }
1361         p2->transfer_syntax.if_version = NDR_GUID_VERSION;
1362
1363         status = dcerpc_alter_context(p2, p2, &p2->syntax, &p2->transfer_syntax);
1364         if (!NT_STATUS_IS_OK(status)) {
1365                 talloc_free(p2);
1366                 return status;
1367         }
1368
1369         *pp2 = p2;
1370
1371         return status;
1372 }