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 "librpc/gen_ndr/ndr_epmapper.h"
  27 #include "librpc/gen_ndr/ndr_dcerpc.h"
  28 #include "librpc/gen_ndr/ndr_misc.h"
  29
  30 /*
  31   find a dcerpc call on an interface by name
  32 */
  33 const struct dcerpc_interface_call *dcerpc_iface_find_call(const struct dcerpc_interface_table *iface,
  34                                                            const char *name)
  35 {
  36         int i;
  37         for (i=0;i<iface->num_calls;i++) {
  38                 if (strcmp(iface->calls[i].name, name) == 0) {
  39                         return &iface->calls[i];
  40                 }
  41         }
  42         return NULL;
  43 }
  44
  45 /*
  46    push a ncacn_packet into a blob, potentially with auth info
  47 */
  48 NTSTATUS ncacn_push_auth(DATA_BLOB *blob, TALLOC_CTX *mem_ctx,
  49                           struct ncacn_packet *pkt,
  50                           struct dcerpc_auth *auth_info)
  51 {
  52         NTSTATUS status;
  53         struct ndr_push *ndr;
  54
  55         ndr = ndr_push_init_ctx(mem_ctx);
  56         if (!ndr) {
  57                 return NT_STATUS_NO_MEMORY;
  58         }
  59
  60         if (!(pkt->drep[0] & DCERPC_DREP_LE)) {
  61                 ndr->flags |= LIBNDR_FLAG_BIGENDIAN;
  62         }
  63
  64         if (pkt->pfc_flags & DCERPC_PFC_FLAG_ORPC) {
  65                 ndr->flags |= LIBNDR_FLAG_OBJECT_PRESENT;
  66         }
  67
  68         if (auth_info) {
  69                 pkt->auth_length = auth_info->credentials.length;
  70         } else {
  71                 pkt->auth_length = 0;
  72         }
  73
  74         status = ndr_push_ncacn_packet(ndr, NDR_SCALARS|NDR_BUFFERS, pkt);
  75         if (!NT_STATUS_IS_OK(status)) {
  76                 return status;
  77         }
  78
  79         if (auth_info) {
  80                 status = ndr_push_dcerpc_auth(ndr, NDR_SCALARS|NDR_BUFFERS, auth_info);
  81         }
  82
  83         *blob = ndr_push_blob(ndr);
  84
  85         /* fill in the frag length */
  86         dcerpc_set_frag_length(blob, blob->length);
  87
  88         return NT_STATUS_OK;
  89 }
  90
  91 #define MAX_PROTSEQ             10
  92
  93 static const struct {
  94         const char *name;
  95         enum dcerpc_transport_t transport;
  96         int num_protocols;
  97         enum epm_protocol protseq[MAX_PROTSEQ];
  98 } transports[] = {
  99         { "ncacn_np",     NCACN_NP, 3,
 100                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_SMB, EPM_PROTOCOL_NETBIOS }},
 101         { "ncacn_ip_tcp", NCACN_IP_TCP, 3,
 102                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_TCP, EPM_PROTOCOL_IP } },
 103         { "ncacn_http", NCACN_HTTP, 3,
 104                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_HTTP, EPM_PROTOCOL_IP } },
 105         { "ncadg_ip_udp", NCACN_IP_UDP, 3,
 106                 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UDP, EPM_PROTOCOL_IP } },
 107         { "ncalrpc", NCALRPC, 2,
 108                 { EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_PIPE } },
 109         { "ncacn_unix_stream", NCACN_UNIX_STREAM, 2,
 110                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_UNIX_DS } },
 111         { "ncadg_unix_dgram", NCADG_UNIX_DGRAM, 2,
 112                 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UNIX_DS } },
 113         { "ncacn_at_dsp", NCACN_AT_DSP, 3,
 114                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DSP } },
 115         { "ncadg_at_ddp", NCADG_AT_DDP, 3,
 116                 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DDP } },
 117         { "ncacn_vns_ssp", NCACN_VNS_SPP, 3,
 118                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_SPP } },
 119         { "ncacn_vns_ipc", NCACN_VNS_IPC, 3,
 120                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_IPC }, },
 121         { "ncadg_ipx", NCADG_IPX, 2,
 122                 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_IPX },
 123         },
 124         { "ncacn_spx", NCACN_SPX, 3,
 125                 /* I guess some MS programmer confused the identifier for
 126                  * EPM_PROTOCOL_UUID (0x0D or 13) with the one for
 127                  * EPM_PROTOCOL_SPX (0x13) here. -- jelmer*/
 128                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_UUID },
 129         },
 130 };
 131
 132 static const struct {
 133         const char *name;
 134         uint32_t flag;
 135 } ncacn_options[] = {
 136         {"sign", DCERPC_SIGN},
 137         {"seal", DCERPC_SEAL},
 138         {"connect", DCERPC_CONNECT},
 139         {"spnego", DCERPC_AUTH_SPNEGO},
 140         {"krb5", DCERPC_AUTH_KRB5},
 141         {"validate", DCERPC_DEBUG_VALIDATE_BOTH},
 142         {"print", DCERPC_DEBUG_PRINT_BOTH},
 143         {"padcheck", DCERPC_DEBUG_PAD_CHECK},
 144         {"bigendian", DCERPC_PUSH_BIGENDIAN},
 145         {"smb2", DCERPC_SMB2}
 146 };
 147
 148 const char *epm_floor_string(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor)
 149 {
 150         struct GUID uuid;
 151         uint16_t if_version;
 152         NTSTATUS status;
 153
 154         switch(epm_floor->lhs.protocol) {
 155                 case EPM_PROTOCOL_UUID:
 156                         status = dcerpc_floor_get_lhs_data(epm_floor, &uuid, &if_version);
 157                         if (NT_STATUS_IS_OK(status)) {
 158                                 /* lhs is used: UUID */
 159                                 char *uuidstr;
 160
 161                                 if (GUID_equal(&uuid, &ndr_transfer_syntax.uuid)) {
 162                                         return "NDR";
 163                                 }
 164
 165                                 if (GUID_equal(&uuid, &ndr64_transfer_syntax.uuid)) {
 166                                         return "NDR64";
 167                                 }
 168
 169                                 uuidstr = GUID_string(mem_ctx, &uuid);
 170
 171                                 return talloc_asprintf(mem_ctx, " uuid %s/0x%02x", uuidstr, if_version);
 172                         } else { /* IPX */
 173                                 return talloc_asprintf(mem_ctx, "IPX:%s",
 174                                                 data_blob_hex_string(mem_ctx, &epm_floor->rhs.uuid.unknown));
 175                         }
 176
 177                 case EPM_PROTOCOL_NCACN:
 178                         return "RPC-C";
 179
 180                 case EPM_PROTOCOL_NCADG:
 181                         return "RPC";
 182
 183                 case EPM_PROTOCOL_NCALRPC:
 184                         return "NCALRPC";
 185
 186                 case EPM_PROTOCOL_DNET_NSP:
 187                         return "DNET/NSP";
 188
 189                 case EPM_PROTOCOL_IP:
 190                         return talloc_asprintf(mem_ctx, "IP:%s", epm_floor->rhs.ip.ipaddr);
 191
 192                 case EPM_PROTOCOL_PIPE:
 193                         return talloc_asprintf(mem_ctx, "PIPE:%s", epm_floor->rhs.pipe.path);
 194
 195                 case EPM_PROTOCOL_SMB:
 196                         return talloc_asprintf(mem_ctx, "SMB:%s", epm_floor->rhs.smb.unc);
 197
 198                 case EPM_PROTOCOL_UNIX_DS:
 199                         return talloc_asprintf(mem_ctx, "Unix:%s", epm_floor->rhs.unix_ds.path);
 200
 201                 case EPM_PROTOCOL_NETBIOS:
 202                         return talloc_asprintf(mem_ctx, "NetBIOS:%s", epm_floor->rhs.netbios.name);
 203
 204                 case EPM_PROTOCOL_NETBEUI:
 205                         return "NETBeui";
 206
 207                 case EPM_PROTOCOL_SPX:
 208                         return "SPX";
 209
 210                 case EPM_PROTOCOL_NB_IPX:
 211                         return "NB_IPX";
 212
 213                 case EPM_PROTOCOL_HTTP:
 214                         return talloc_asprintf(mem_ctx, "HTTP:%d", epm_floor->rhs.http.port);
 215
 216                 case EPM_PROTOCOL_TCP:
 217                         return talloc_asprintf(mem_ctx, "TCP:%d", epm_floor->rhs.tcp.port);
 218
 219                 case EPM_PROTOCOL_UDP:
 220                         return talloc_asprintf(mem_ctx, "UDP:%d", epm_floor->rhs.udp.port);
 221
 222                 default:
 223                         return talloc_asprintf(mem_ctx, "UNK(%02x):", epm_floor->lhs.protocol);
 224         }
 225 }
 226
 227
 228 /*
 229   form a binding string from a binding structure
 230 */
 231 const char *dcerpc_binding_string(TALLOC_CTX *mem_ctx, const struct dcerpc_binding *b)
 232 {
 233         char *s = talloc_strdup(mem_ctx, "");
 234         int i;
 235         const char *t_name=NULL;
 236
 237         for (i=0;i<ARRAY_SIZE(transports);i++) {
 238                 if (transports[i].transport == b->transport) {
 239                         t_name = transports[i].name;
 240                 }
 241         }
 242         if (!t_name) {
 243                 return NULL;
 244         }
 245
 246         if (!GUID_all_zero(&b->object)) {
 247                 s = talloc_asprintf(s, "%s@",
 248                                     GUID_string(mem_ctx, &b->object));
 249         }
 250
 251         s = talloc_asprintf_append(s, "%s:", t_name);
 252         if (!s) return NULL;
 253
 254         if (b->host) {
 255                 s = talloc_asprintf_append(s, "%s", b->host);
 256         }
 257
 258         if (!b->endpoint && !b->options && !b->flags) {
 259                 return s;
 260         }
 261
 262         s = talloc_asprintf_append(s, "[");
 263
 264         if (b->endpoint) {
 265                 s = talloc_asprintf_append(s, "%s", b->endpoint);
 266         }
 267
 268         /* this is a *really* inefficent way of dealing with strings,
 269            but this is rarely called and the strings are always short,
 270            so I don't care */
 271         for (i=0;b->options && b->options[i];i++) {
 272                 s = talloc_asprintf_append(s, ",%s", b->options[i]);
 273                 if (!s) return NULL;
 274         }
 275
 276         for (i=0;i<ARRAY_SIZE(ncacn_options);i++) {
 277                 if (b->flags & ncacn_options[i].flag) {
 278                         s = talloc_asprintf_append(s, ",%s", ncacn_options[i].name);
 279                         if (!s) return NULL;
 280                 }
 281         }
 282
 283         s = talloc_asprintf_append(s, "]");
 284
 285         return s;
 286 }
 287
 288 /*
 289   parse a binding string into a dcerpc_binding structure
 290 */
 291 NTSTATUS dcerpc_parse_binding(TALLOC_CTX *mem_ctx, const char *s, struct dcerpc_binding **b_out)
 292 {
 293         struct dcerpc_binding *b;
 294         char *options, *type;
 295         char *p;
 296         int i, j, comma_count;
 297
 298         b = talloc(mem_ctx, struct dcerpc_binding);
 299         if (!b) {
 300                 return NT_STATUS_NO_MEMORY;
 301         }
 302
 303         p = strchr(s, '@');
 304
 305         if (p && PTR_DIFF(p, s) == 36) { /* 36 is the length of a UUID */
 306                 NTSTATUS status;
 307
 308                 status = GUID_from_string(s, &b->object);
 309
 310                 if (NT_STATUS_IS_ERR(status)) {
 311                         DEBUG(0, ("Failed parsing UUID\n"));
 312                         return status;
 313                 }
 314
 315                 s = p + 1;
 316         } else {
 317                 ZERO_STRUCT(b->object);
 318         }
 319
 320         b->object_version = 0;
 321
 322         p = strchr(s, ':');
 323         if (!p) {
 324                 return NT_STATUS_INVALID_PARAMETER;
 325         }
 326
 327         type = talloc_strndup(mem_ctx, s, PTR_DIFF(p, s));
 328         if (!type) {
 329                 return NT_STATUS_NO_MEMORY;
 330         }
 331
 332         for (i=0;i<ARRAY_SIZE(transports);i++) {
 333                 if (strcasecmp(type, transports[i].name) == 0) {
 334                         b->transport = transports[i].transport;
 335                         break;
 336                 }
 337         }
 338         if (i==ARRAY_SIZE(transports)) {
 339                 DEBUG(0,("Unknown dcerpc transport '%s'\n", type));
 340                 return NT_STATUS_INVALID_PARAMETER;
 341         }
 342
 343         s = p+1;
 344
 345         p = strchr(s, '[');
 346         if (p) {
 347                 b->host = talloc_strndup(b, s, PTR_DIFF(p, s));
 348                 options = talloc_strdup(mem_ctx, p+1);
 349                 if (options[strlen(options)-1] != ']') {
 350                         return NT_STATUS_INVALID_PARAMETER;
 351                 }
 352                 options[strlen(options)-1] = 0;
 353         } else {
 354                 b->host = talloc_strdup(b, s);
 355                 options = NULL;
 356         }
 357
 358         if (!b->host) {
 359                 return NT_STATUS_NO_MEMORY;
 360         }
 361
 362         b->options = NULL;
 363         b->flags = 0;
 364         b->endpoint = NULL;
 365
 366         if (!options) {
 367                 *b_out = b;
 368                 return NT_STATUS_OK;
 369         }
 370
 371         comma_count = count_chars(options, ',');
 372
 373         b->options = talloc_array(b, const char *, comma_count+2);
 374         if (!b->options) {
 375                 return NT_STATUS_NO_MEMORY;
 376         }
 377
 378         for (i=0; (p = strchr(options, ',')); i++) {
 379                 b->options[i] = talloc_strndup(b, options, PTR_DIFF(p, options));
 380                 if (!b->options[i]) {
 381                         return NT_STATUS_NO_MEMORY;
 382                 }
 383                 options = p+1;
 384         }
 385         b->options[i] = options;
 386         b->options[i+1] = NULL;
 387
 388         /* some options are pre-parsed for convenience */
 389         for (i=0;b->options[i];i++) {
 390                 for (j=0;j<ARRAY_SIZE(ncacn_options);j++) {
 391                         if (strcasecmp(ncacn_options[j].name, b->options[i]) == 0) {
 392                                 int k;
 393                                 b->flags |= ncacn_options[j].flag;
 394                                 for (k=i;b->options[k];k++) {
 395                                         b->options[k] = b->options[k+1];
 396                                 }
 397                                 i--;
 398                                 break;
 399                         }
 400                 }
 401         }
 402
 403         if (b->options[0]) {
 404                 /* Endpoint is first option */
 405                 b->endpoint = b->options[0];
 406                 if (strlen(b->endpoint) == 0) b->endpoint = NULL;
 407
 408                 for (i=0;b->options[i];i++) {
 409                         b->options[i] = b->options[i+1];
 410                 }
 411         }
 412
 413         if (b->options[0] == NULL)
 414                 b->options = NULL;
 415
 416         *b_out = b;
 417         return NT_STATUS_OK;
 418 }
 419
 420 NTSTATUS dcerpc_floor_get_lhs_data(struct epm_floor *epm_floor, struct GUID *uuid, uint16_t *if_version)
 421 {
 422         TALLOC_CTX *mem_ctx = talloc_init("floor_get_lhs_data");
 423         struct ndr_pull *ndr = ndr_pull_init_blob(&epm_floor->lhs.lhs_data, mem_ctx);
 424         NTSTATUS status;
 425
 426         ndr->flags |= LIBNDR_FLAG_NOALIGN;
 427
 428         status = ndr_pull_GUID(ndr, NDR_SCALARS | NDR_BUFFERS, uuid);
 429         if (NT_STATUS_IS_ERR(status)) {
 430                 talloc_free(mem_ctx);
 431                 return status;
 432         }
 433
 434         status = ndr_pull_uint16(ndr, NDR_SCALARS, if_version);
 435
 436         talloc_free(mem_ctx);
 437
 438         return status;
 439 }
 440
 441 static DATA_BLOB dcerpc_floor_pack_lhs_data(TALLOC_CTX *mem_ctx, const struct GUID *uuid, uint32_t if_version)
 442 {
 443         struct ndr_push *ndr = ndr_push_init_ctx(mem_ctx);
 444
 445         ndr->flags |= LIBNDR_FLAG_NOALIGN;
 446
 447         ndr_push_GUID(ndr, NDR_SCALARS | NDR_BUFFERS, uuid);
 448         ndr_push_uint16(ndr, NDR_SCALARS, if_version);
 449
 450         return ndr_push_blob(ndr);
 451 }
 452
 453 const char *dcerpc_floor_get_rhs_data(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor)
 454 {
 455         switch (epm_floor->lhs.protocol) {
 456         case EPM_PROTOCOL_TCP:
 457                 if (epm_floor->rhs.tcp.port == 0) return NULL;
 458                 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.tcp.port);
 459
 460         case EPM_PROTOCOL_UDP:
 461                 if (epm_floor->rhs.udp.port == 0) return NULL;
 462                 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.udp.port);
 463
 464         case EPM_PROTOCOL_HTTP:
 465                 if (epm_floor->rhs.http.port == 0) return NULL;
 466                 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.http.port);
 467
 468         case EPM_PROTOCOL_IP:
 469                 return talloc_strdup(mem_ctx, epm_floor->rhs.ip.ipaddr);
 470
 471         case EPM_PROTOCOL_NCACN:
 472                 return NULL;
 473
 474         case EPM_PROTOCOL_NCADG:
 475                 return NULL;
 476
 477         case EPM_PROTOCOL_SMB:
 478                 if (strlen(epm_floor->rhs.smb.unc) == 0) return NULL;
 479                 return talloc_strdup(mem_ctx, epm_floor->rhs.smb.unc);
 480
 481         case EPM_PROTOCOL_PIPE:
 482                 if (strlen(epm_floor->rhs.pipe.path) == 0) return NULL;
 483                 return talloc_strdup(mem_ctx, epm_floor->rhs.pipe.path);
 484
 485         case EPM_PROTOCOL_NETBIOS:
 486                 if (strlen(epm_floor->rhs.netbios.name) == 0) return NULL;
 487                 return talloc_strdup(mem_ctx, epm_floor->rhs.netbios.name);
 488
 489         case EPM_PROTOCOL_NCALRPC:
 490                 return NULL;
 491
 492         case EPM_PROTOCOL_VINES_SPP:
 493                 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.vines_spp.port);
 494
 495         case EPM_PROTOCOL_VINES_IPC:
 496                 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.vines_ipc.port);
 497
 498         case EPM_PROTOCOL_STREETTALK:
 499                 return talloc_strdup(mem_ctx, epm_floor->rhs.streettalk.streettalk);
 500
 501         case EPM_PROTOCOL_UNIX_DS:
 502                 if (strlen(epm_floor->rhs.unix_ds.path) == 0) return NULL;
 503                 return talloc_strdup(mem_ctx, epm_floor->rhs.unix_ds.path);
 504
 505         case EPM_PROTOCOL_NULL:
 506                 return NULL;
 507
 508         default:
 509                 DEBUG(0,("Unsupported lhs protocol %d\n", epm_floor->lhs.protocol));
 510                 break;
 511         }
 512
 513         return NULL;
 514 }
 515
 516 static NTSTATUS dcerpc_floor_set_rhs_data(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor,  const char *data)
 517 {
 518         switch (epm_floor->lhs.protocol) {
 519         case EPM_PROTOCOL_TCP:
 520                 epm_floor->rhs.tcp.port = atoi(data);
 521                 return NT_STATUS_OK;
 522
 523         case EPM_PROTOCOL_UDP:
 524                 epm_floor->rhs.udp.port = atoi(data);
 525                 return NT_STATUS_OK;
 526
 527         case EPM_PROTOCOL_HTTP:
 528                 epm_floor->rhs.http.port = atoi(data);
 529                 return NT_STATUS_OK;
 530
 531         case EPM_PROTOCOL_IP:
 532                 epm_floor->rhs.ip.ipaddr = talloc_strdup(mem_ctx, data);
 533                 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.ip.ipaddr);
 534                 return NT_STATUS_OK;
 535
 536         case EPM_PROTOCOL_NCACN:
 537                 epm_floor->rhs.ncacn.minor_version = 0;
 538                 return NT_STATUS_OK;
 539
 540         case EPM_PROTOCOL_NCADG:
 541                 epm_floor->rhs.ncadg.minor_version = 0;
 542                 return NT_STATUS_OK;
 543
 544         case EPM_PROTOCOL_SMB:
 545                 epm_floor->rhs.smb.unc = talloc_strdup(mem_ctx, data);
 546                 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.smb.unc);
 547                 return NT_STATUS_OK;
 548
 549         case EPM_PROTOCOL_PIPE:
 550                 epm_floor->rhs.pipe.path = talloc_strdup(mem_ctx, data);
 551                 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.pipe.path);
 552                 return NT_STATUS_OK;
 553
 554         case EPM_PROTOCOL_NETBIOS:
 555                 epm_floor->rhs.netbios.name = talloc_strdup(mem_ctx, data);
 556                 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.netbios.name);
 557                 return NT_STATUS_OK;
 558
 559         case EPM_PROTOCOL_NCALRPC:
 560                 return NT_STATUS_OK;
 561
 562         case EPM_PROTOCOL_VINES_SPP:
 563                 epm_floor->rhs.vines_spp.port = atoi(data);
 564                 return NT_STATUS_OK;
 565
 566         case EPM_PROTOCOL_VINES_IPC:
 567                 epm_floor->rhs.vines_ipc.port = atoi(data);
 568                 return NT_STATUS_OK;
 569
 570         case EPM_PROTOCOL_STREETTALK:
 571                 epm_floor->rhs.streettalk.streettalk = talloc_strdup(mem_ctx, data);
 572                 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.streettalk.streettalk);
 573                 return NT_STATUS_OK;
 574
 575         case EPM_PROTOCOL_UNIX_DS:
 576                 epm_floor->rhs.unix_ds.path = talloc_strdup(mem_ctx, data);
 577                 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.unix_ds.path);
 578                 return NT_STATUS_OK;
 579
 580         case EPM_PROTOCOL_NULL:
 581                 return NT_STATUS_OK;
 582
 583         default:
 584                 DEBUG(0,("Unsupported lhs protocol %d\n", epm_floor->lhs.protocol));
 585                 break;
 586         }
 587
 588         return NT_STATUS_NOT_SUPPORTED;
 589 }
 590
 591 enum dcerpc_transport_t dcerpc_transport_by_endpoint_protocol(int prot)
 592 {
 593         int i;
 594
 595         /* Find a transport that has 'prot' as 4th protocol */
 596         for (i=0;i<ARRAY_SIZE(transports);i++) {
 597                 if (transports[i].num_protocols >= 2 &&
 598                         transports[i].protseq[1] == prot) {
 599                         return transports[i].transport;
 600                 }
 601         }
 602
 603         /* Unknown transport */
 604         return -1;
 605 }
 606
 607 enum dcerpc_transport_t dcerpc_transport_by_tower(struct epm_tower *tower)
 608 {
 609         int i;
 610
 611         /* Find a transport that matches this tower */
 612         for (i=0;i<ARRAY_SIZE(transports);i++) {
 613                 int j;
 614                 if (transports[i].num_protocols != tower->num_floors - 2) {
 615                         continue;
 616                 }
 617
 618                 for (j = 0; j < transports[i].num_protocols; j++) {
 619                         if (transports[i].protseq[j] != tower->floors[j+2].lhs.protocol) {
 620                                 break;
 621                         }
 622                 }
 623
 624                 if (j == transports[i].num_protocols) {
 625                         return transports[i].transport;
 626                 }
 627         }
 628
 629         /* Unknown transport */
 630         return -1;
 631 }
 632
 633 NTSTATUS dcerpc_binding_from_tower(TALLOC_CTX *mem_ctx, struct epm_tower *tower, struct dcerpc_binding **b_out)
 634 {
 635         NTSTATUS status;
 636         struct dcerpc_binding *binding;
 637
 638         binding = talloc(mem_ctx, struct dcerpc_binding);
 639         NT_STATUS_HAVE_NO_MEMORY(binding);
 640
 641         ZERO_STRUCT(binding->object);
 642         binding->options = NULL;
 643         binding->host = NULL;
 644         binding->flags = 0;
 645
 646         binding->transport = dcerpc_transport_by_tower(tower);
 647
 648         if (binding->transport == -1) {
 649                 return NT_STATUS_NOT_SUPPORTED;
 650         }
 651
 652         if (tower->num_floors < 1) {
 653                 return NT_STATUS_OK;
 654         }
 655
 656         /* Set object uuid */
 657         status = dcerpc_floor_get_lhs_data(&tower->floors[0], &binding->object, &binding->object_version);
 658
 659         if (!NT_STATUS_IS_OK(status)) {
 660                 DEBUG(1, ("Error pulling object uuid and version: %s", nt_errstr(status)));
 661                 return status;
 662         }
 663
 664         /* Ignore floor 1, it contains the NDR version info */
 665
 666         binding->options = NULL;
 667
 668         /* Set endpoint */
 669         if (tower->num_floors >= 4) {
 670                 binding->endpoint = dcerpc_floor_get_rhs_data(mem_ctx, &tower->floors[3]);
 671         } else {
 672                 binding->endpoint = NULL;
 673         }
 674
 675         /* Set network address */
 676         if (tower->num_floors >= 5) {
 677                 binding->host = dcerpc_floor_get_rhs_data(mem_ctx, &tower->floors[4]);
 678         }
 679         *b_out = binding;
 680         return NT_STATUS_OK;
 681 }
 682
 683 NTSTATUS dcerpc_binding_build_tower(TALLOC_CTX *mem_ctx, struct dcerpc_binding *binding, struct epm_tower *tower)
 684 {
 685         const enum epm_protocol *protseq = NULL;
 686         int num_protocols = -1, i;
 687         NTSTATUS status;
 688
 689         /* Find transport */
 690         for (i=0;i<ARRAY_SIZE(transports);i++) {
 691                 if (transports[i].transport == binding->transport) {
 692                         protseq = transports[i].protseq;
 693                         num_protocols = transports[i].num_protocols;
 694                         break;
 695                 }
 696         }
 697
 698         if (num_protocols == -1) {
 699                 DEBUG(0, ("Unable to find transport with id '%d'\n", binding->transport));
 700                 return NT_STATUS_UNSUCCESSFUL;
 701         }
 702
 703         tower->num_floors = 2 + num_protocols;
 704         tower->floors = talloc_array(mem_ctx, struct epm_floor, tower->num_floors);
 705
 706         /* Floor 0 */
 707         tower->floors[0].lhs.protocol = EPM_PROTOCOL_UUID;
 708
 709         tower->floors[0].lhs.lhs_data = dcerpc_floor_pack_lhs_data(mem_ctx, &binding->object, binding->object_version);
 710
 711         tower->floors[0].rhs.uuid.unknown = data_blob_talloc_zero(mem_ctx, 2);
 712
 713         /* Floor 1 */
 714         tower->floors[1].lhs.protocol = EPM_PROTOCOL_UUID;
 715
 716         tower->floors[1].lhs.lhs_data = dcerpc_floor_pack_lhs_data(mem_ctx,
 717                                                                 &ndr_transfer_syntax.uuid,
 718                                                                 ndr_transfer_syntax.if_version);
 719
 720         tower->floors[1].rhs.uuid.unknown = data_blob_talloc_zero(mem_ctx, 2);
 721
 722         /* Floor 2 to num_protocols */
 723         for (i = 0; i < num_protocols; i++) {
 724                 tower->floors[2 + i].lhs.protocol = protseq[i];
 725                 tower->floors[2 + i].lhs.lhs_data = data_blob_talloc(mem_ctx, NULL, 0);
 726                 ZERO_STRUCT(tower->floors[2 + i].rhs);
 727                 dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[2 + i], "");
 728         }
 729
 730         /* The 4th floor contains the endpoint */
 731         if (num_protocols >= 2 && binding->endpoint) {
 732                 status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[3], binding->endpoint);
 733                 if (NT_STATUS_IS_ERR(status)) {
 734                         return status;
 735                 }
 736         }
 737
 738         /* The 5th contains the network address */
 739         if (num_protocols >= 3 && binding->host) {
 740                 if (is_ipaddress(binding->host)) {
 741                         status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[4],
 742                                                            binding->host);
 743                 } else {
 744                         /* note that we don't attempt to resolve the
 745                            name here - when we get a hostname here we
 746                            are in the client code, and want to put in
 747                            a wildcard all-zeros IP for the server to
 748                            fill in */
 749                         status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[4],
 750                                                            "0.0.0.0");
 751                 }
 752                 if (NT_STATUS_IS_ERR(status)) {
 753                         return status;
 754                 }
 755         }
 756
 757         return NT_STATUS_OK;
 758 }
 759
 760 NTSTATUS dcerpc_epm_map_binding(TALLOC_CTX *mem_ctx, struct dcerpc_binding *binding,
 761                                 const struct dcerpc_interface_table *table, struct event_context *ev)
 762 {
 763         struct dcerpc_pipe *p;
 764         NTSTATUS status;
 765         struct epm_Map r;
 766         struct policy_handle handle;
 767         struct GUID guid;
 768         struct epm_twr_t twr, *twr_r;
 769         struct dcerpc_binding *epmapper_binding;
 770         int i;
 771
 772         struct cli_credentials *anon_creds
 773                 = cli_credentials_init(mem_ctx);
 774         cli_credentials_set_conf(anon_creds);
 775         cli_credentials_set_anonymous(anon_creds);
 776
 777         /* First, check if there is a default endpoint specified in the IDL */
 778
 779         if (table) {
 780                 struct dcerpc_binding *default_binding;
 781
 782                 /* Find one of the default pipes for this interface */
 783                 for (i = 0; i < table->endpoints->count; i++) {
 784                         status = dcerpc_parse_binding(mem_ctx, table->endpoints->names[i], &default_binding);
 785
 786                         if (NT_STATUS_IS_OK(status)) {
 787                                 if (default_binding->transport == binding->transport && default_binding->endpoint) {
 788                                         binding->endpoint = talloc_reference(binding, default_binding->endpoint);
 789                                         talloc_free(default_binding);
 790                                         return NT_STATUS_OK;
 791                                 } else {
 792                                         talloc_free(default_binding);
 793                                 }
 794                         }
 795                 }
 796         }
 797
 798         epmapper_binding = talloc_zero(mem_ctx, struct dcerpc_binding);
 799         if (!epmapper_binding) {
 800                 return NT_STATUS_NO_MEMORY;
 801         }
 802
 803         epmapper_binding->transport = binding->transport;
 804         epmapper_binding->host = talloc_reference(epmapper_binding,
 805                                                   binding->host);
 806         epmapper_binding->options = NULL;
 807         epmapper_binding->flags = 0;
 808         epmapper_binding->endpoint = NULL;
 809
 810         status = dcerpc_pipe_connect_b(mem_ctx,
 811                                        &p,
 812                                        epmapper_binding,
 813                                            &dcerpc_table_epmapper,
 814                                        anon_creds, ev);
 815
 816         if (!NT_STATUS_IS_OK(status)) {
 817                 return status;
 818         }
 819
 820         ZERO_STRUCT(handle);
 821         ZERO_STRUCT(guid);
 822
 823         binding->object = table->uuid;
 824         binding->object_version = table->if_version;
 825
 826         status = dcerpc_binding_build_tower(p, binding, &twr.tower);
 827         if (NT_STATUS_IS_ERR(status)) {
 828                 return status;
 829         }
 830
 831         /* with some nice pretty paper around it of course */
 832         r.in.object = &guid;
 833         r.in.map_tower = &twr;
 834         r.in.entry_handle = &handle;
 835         r.in.max_towers = 1;
 836         r.out.entry_handle = &handle;
 837
 838         status = dcerpc_epm_Map(p, p, &r);
 839         if (!NT_STATUS_IS_OK(status)) {
 840                 talloc_free(p);
 841                 return status;
 842         }
 843         if (r.out.result != 0 || r.out.num_towers != 1) {
 844                 talloc_free(p);
 845                 return NT_STATUS_PORT_UNREACHABLE;
 846         }
 847
 848         twr_r = r.out.towers[0].twr;
 849         if (!twr_r) {
 850                 talloc_free(p);
 851                 return NT_STATUS_PORT_UNREACHABLE;
 852         }
 853
 854         if (twr_r->tower.num_floors != twr.tower.num_floors ||
 855             twr_r->tower.floors[3].lhs.protocol != twr.tower.floors[3].lhs.protocol) {
 856                 talloc_free(p);
 857                 return NT_STATUS_PORT_UNREACHABLE;
 858         }
 859
 860         binding->endpoint = talloc_reference(binding, dcerpc_floor_get_rhs_data(mem_ctx, &twr_r->tower.floors[3]));
 861
 862         talloc_free(p);
 863
 864         return NT_STATUS_OK;
 865 }
 866
 867
 868 /*
 869    perform an authenticated bind if needed
 870 */
 871 NTSTATUS dcerpc_pipe_auth(struct dcerpc_pipe *p,
 872                           struct dcerpc_binding *binding,
 873                           const struct dcerpc_interface_table *table,
 874                           struct cli_credentials *credentials)
 875 {
 876         NTSTATUS status;
 877         TALLOC_CTX *tmp_ctx;
 878         tmp_ctx = talloc_new(p);
 879
 880         p->conn->flags = binding->flags;
 881
 882         /* remember the binding string for possible secondary connections */
 883         p->conn->binding_string = dcerpc_binding_string(p, binding);
 884
 885         if (!cli_credentials_is_anonymous(credentials) &&
 886                 (binding->flags & DCERPC_SCHANNEL) &&
 887                 !cli_credentials_get_netlogon_creds(credentials)) {
 888
 889                 /* If we don't already have netlogon credentials for
 890                  * the schannel bind, then we have to get these
 891                  * first */
 892                 status = dcerpc_bind_auth_schannel(tmp_ctx, p, table, credentials);
 893         } else if (!cli_credentials_is_anonymous(credentials) &&
 894                 !(binding->transport == NCACN_NP &&
 895                   !(binding->flags & DCERPC_SIGN) &&
 896                   !(binding->flags & DCERPC_SEAL))) {
 897
 898                 /* Perform an authenticated DCE-RPC bind, except where
 899                  * we ask for a connection on NCACN_NP, and that
 900                  * connection is not signed or sealed.  For that case
 901                  * we rely on the already authenicated CIFS connection
 902                  */
 903
 904                 uint8_t auth_type;
 905
 906                 if ((p->conn->flags & (DCERPC_SIGN|DCERPC_SEAL)) == 0) {
 907                         /*
 908                           we are doing an authenticated connection,
 909                           but not using sign or seal. We must force
 910                           the CONNECT dcerpc auth type as a NONE auth
 911                           type doesn't allow authentication
 912                           information to be passed.
 913                         */
 914                         p->conn->flags |= DCERPC_CONNECT;
 915                 }
 916
 917                 if (binding->flags & DCERPC_AUTH_SPNEGO) {
 918                         auth_type = DCERPC_AUTH_TYPE_SPNEGO;
 919                 } else if (binding->flags & DCERPC_AUTH_KRB5) {
 920                         auth_type = DCERPC_AUTH_TYPE_KRB5;
 921                 } else if (binding->flags & DCERPC_SCHANNEL) {
 922                         auth_type = DCERPC_AUTH_TYPE_SCHANNEL;
 923                 } else {
 924                         auth_type = DCERPC_AUTH_TYPE_NTLMSSP;
 925                 }
 926
 927                 status = dcerpc_bind_auth(p, table,
 928                                           credentials, auth_type, table->authservices->names[0]);
 929         } else {
 930                 status = dcerpc_bind_auth_none(p, table);
 931         }
 932
 933         if (!NT_STATUS_IS_OK(status)) {
 934                 char *uuid_str = GUID_string(p, &table->uuid);
 935                 DEBUG(0,("Failed to bind to uuid %s - %s\n", uuid_str, nt_errstr(status)));
 936                 talloc_free(uuid_str);
 937         }
 938         talloc_free(tmp_ctx);
 939         return status;
 940 }
 941
 942
 943 /* open a rpc connection to a rpc pipe on SMB using the binding
 944    structure to determine the endpoint and options */
 945 static NTSTATUS dcerpc_pipe_connect_ncacn_np(TALLOC_CTX *tmp_ctx,
 946                                              struct dcerpc_pipe_connect *io)
 947 {
 948         if (io->binding->flags & DCERPC_SMB2) {
 949                 return dcerpc_pipe_connect_ncacn_np_smb2(tmp_ctx, io);
 950
 951         }
 952         return dcerpc_pipe_connect_ncacn_np_smb(tmp_ctx, io);
 953 }
 954
 955
 956 /* open a rpc connection to a rpc pipe on SMP using the binding
 957    structure to determine the endpoint and options */
 958 static NTSTATUS dcerpc_pipe_connect_ncalrpc(TALLOC_CTX *tmp_ctx,
 959                                             struct dcerpc_pipe *p,
 960                                             struct dcerpc_binding *binding,
 961                                                 const struct dcerpc_interface_table *table)
 962 {
 963         NTSTATUS status;
 964
 965         status = dcerpc_pipe_open_pipe(p->conn, binding->endpoint);
 966         if (!NT_STATUS_IS_OK(status)) {
 967                 DEBUG(0,("Failed to open ncalrpc pipe '%s' - %s\n",
 968                          binding->endpoint, nt_errstr(status)));
 969                 return status;
 970         }
 971
 972         return status;
 973 }
 974
 975
 976
 977 /* open a rpc connection to a rpc pipe on SMP using the binding
 978    structure to determine the endpoint and options */
 979 static NTSTATUS dcerpc_pipe_connect_ncacn_unix_stream(TALLOC_CTX *tmp_ctx,
 980                                                       struct dcerpc_pipe *p,
 981                                                       struct dcerpc_binding *binding,
 982                                                           const struct dcerpc_interface_table *table)
 983 {
 984         NTSTATUS status;
 985
 986         if (!binding->endpoint) {
 987                 DEBUG(0, ("Path to unix socket not specified\n"));
 988                 return NT_STATUS_INVALID_PARAMETER;
 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         return status;
1000 }
1001
1002 /* open a rpc connection to a rpc pipe on TCP/IP sockets using the binding
1003    structure to determine the endpoint and options */
1004 static NTSTATUS dcerpc_pipe_connect_ncacn_ip_tcp(TALLOC_CTX *tmp_ctx,
1005                                                  struct dcerpc_pipe *p,
1006                                                  struct dcerpc_binding *binding,
1007                                                  const struct dcerpc_interface_table *table)
1008 {
1009         NTSTATUS status;
1010         uint32_t port = 0;
1011
1012         port = atoi(binding->endpoint);
1013
1014         status = dcerpc_pipe_open_tcp(p->conn, binding->host, port);
1015         if (!NT_STATUS_IS_OK(status)) {
1016                 DEBUG(0,("Failed to connect to %s:%d - %s\n",
1017                          binding->host, port, nt_errstr(status)));
1018                 return status;
1019         }
1020
1021         return status;
1022 }
1023
1024
1025 /* open a rpc connection to a rpc pipe, using the specified
1026    binding structure to determine the endpoint and options */
1027 NTSTATUS dcerpc_pipe_connect_b(TALLOC_CTX *parent_ctx,
1028                                struct dcerpc_pipe **pp,
1029                                struct dcerpc_binding *binding,
1030                                    const struct dcerpc_interface_table *table,
1031                                struct cli_credentials *credentials,
1032                                struct event_context *ev)
1033 {
1034         NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
1035         struct dcerpc_pipe *p;
1036         struct dcerpc_pipe_connect pc;
1037
1038         TALLOC_CTX *tmp_ctx;
1039
1040         (*pp) = NULL;
1041
1042         p = dcerpc_pipe_init(parent_ctx, ev);
1043         if (p == NULL) {
1044                 return NT_STATUS_NO_MEMORY;
1045         }
1046         tmp_ctx = talloc_named(p, 0, "dcerpc_pipe_connect_b tmp_ctx");
1047
1048         switch (binding->transport) {
1049         case NCACN_NP:
1050         case NCACN_IP_TCP:
1051         case NCALRPC:
1052                 if (!binding->endpoint) {
1053                         status = dcerpc_epm_map_binding(tmp_ctx, binding, table,
1054                                                         p->conn->event_ctx);
1055                         if (!NT_STATUS_IS_OK(status)) {
1056                                 DEBUG(0,("Failed to map DCERPC endpoint for '%s' - %s\n",
1057                                          GUID_string(tmp_ctx, &table->uuid), nt_errstr(status)));
1058                                 talloc_free(tmp_ctx);
1059                                 return status;
1060                         }
1061                         DEBUG(2,("Mapped to DCERPC endpoint %s\n", binding->endpoint));
1062                 }
1063                 break;
1064
1065                 /* Fall through to next switch statement */
1066
1067         default:
1068                 break;
1069         }
1070
1071         pc.pipe          = p;
1072         pc.binding       = binding;
1073         pc.interface     = table;
1074         pc.creds         = credentials;
1075
1076         switch (binding->transport) {
1077         case NCACN_NP:
1078                 status = dcerpc_pipe_connect_ncacn_np(tmp_ctx, &pc);
1079                 break;
1080
1081         case NCACN_IP_TCP:
1082                 status = dcerpc_pipe_connect_ncacn_ip_tcp(tmp_ctx,
1083                                                           p, binding, table);
1084                 break;
1085         case NCACN_UNIX_STREAM:
1086                 status = dcerpc_pipe_connect_ncacn_unix_stream(tmp_ctx,
1087                                                                p, binding, table);
1088                 break;
1089         case NCALRPC:
1090                 status = dcerpc_pipe_connect_ncalrpc(tmp_ctx,
1091                                                      p, binding, table);
1092                 break;
1093         default:
1094                 return NT_STATUS_NOT_SUPPORTED;
1095         }
1096
1097         if (!NT_STATUS_IS_OK(status)) {
1098                 talloc_free(p);
1099                 return status;
1100         }
1101
1102         status = dcerpc_pipe_auth(p, binding, table, credentials);
1103         if (!NT_STATUS_IS_OK(status)) {
1104                 talloc_free(p);
1105                 return status;
1106         }
1107         *pp = p;
1108         talloc_free(tmp_ctx);
1109
1110         return status;
1111 }
1112
1113
1114 /* open a rpc connection to a rpc pipe, using the specified string
1115    binding to determine the endpoint and options */
1116 NTSTATUS dcerpc_pipe_connect(TALLOC_CTX *parent_ctx,
1117                              struct dcerpc_pipe **pp,
1118                                  const char *binding,
1119                                  const struct dcerpc_interface_table *table,
1120                              struct cli_credentials *credentials,
1121                              struct event_context *ev)
1122 {
1123         struct dcerpc_binding *b;
1124         NTSTATUS status;
1125         TALLOC_CTX *tmp_ctx;
1126
1127         tmp_ctx = talloc_named(parent_ctx, 0, "dcerpc_pipe_connect tmp_ctx");
1128         if (!tmp_ctx) {
1129                 return NT_STATUS_NO_MEMORY;
1130         }
1131
1132         status = dcerpc_parse_binding(tmp_ctx, binding, &b);
1133         if (!NT_STATUS_IS_OK(status)) {
1134                 DEBUG(0,("Failed to parse dcerpc binding '%s'\n", binding));
1135                 talloc_free(tmp_ctx);
1136                 return status;
1137         }
1138
1139         DEBUG(3,("Using binding %s\n", dcerpc_binding_string(tmp_ctx, b)));
1140
1141         status = dcerpc_pipe_connect_b(tmp_ctx, pp, b, table, credentials, ev);
1142
1143         if (NT_STATUS_IS_OK(status)) {
1144                 *pp = talloc_steal(parent_ctx, *pp);
1145         }
1146         talloc_free(tmp_ctx);
1147
1148         return status;
1149 }
1150
1151
1152 /*
1153   create a secondary dcerpc connection from a primary connection
1154
1155   if the primary is a SMB connection then the secondary connection
1156   will be on the same SMB connection, but use a new fnum
1157 */
1158 NTSTATUS dcerpc_secondary_connection(struct dcerpc_pipe *p, struct dcerpc_pipe **p2,
1159                                      struct dcerpc_binding *b)
1160
1161
1162 {
1163         struct smbcli_tree *tree;
1164         NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
1165
1166         (*p2) = dcerpc_pipe_init(p, p->conn->event_ctx);
1167         if (*p2 == NULL) {
1168                 return NT_STATUS_NO_MEMORY;
1169         }
1170
1171         switch (p->conn->transport.transport) {
1172         case NCACN_NP:
1173                 tree = dcerpc_smb_tree(p->conn);
1174                 if (!tree) {
1175                         return NT_STATUS_INVALID_PARAMETER;
1176                 }
1177                 status = dcerpc_pipe_open_smb((*p2)->conn, tree, b->endpoint);
1178                 break;
1179
1180         case NCACN_IP_TCP:
1181                 status = dcerpc_pipe_open_tcp((*p2)->conn, b->host, atoi(b->endpoint));
1182                 break;
1183
1184         case NCALRPC:
1185                 status = dcerpc_pipe_open_pipe((*p2)->conn, b->endpoint);
1186                 break;
1187
1188         default:
1189                 return NT_STATUS_NOT_SUPPORTED;
1190         }
1191
1192         if (!NT_STATUS_IS_OK(status)) {
1193                 talloc_free(*p2);
1194                 return status;
1195         }
1196
1197         (*p2)->conn->flags = p->conn->flags;
1198
1199         return NT_STATUS_OK;
1200 }
1201
1202 NTSTATUS dcerpc_generic_session_key(struct dcerpc_connection *c,
1203                                     DATA_BLOB *session_key)
1204 {
1205         /* this took quite a few CPU cycles to find ... */
1206         session_key->data = discard_const_p(unsigned char, "SystemLibraryDTC");
1207         session_key->length = 16;
1208         return NT_STATUS_OK;
1209 }
1210
1211 /*
1212   fetch the user session key - may be default (above) or the SMB session key
1213 */
1214 NTSTATUS dcerpc_fetch_session_key(struct dcerpc_pipe *p,
1215                                   DATA_BLOB *session_key)
1216 {
1217         return p->conn->security_state.session_key(p->conn, session_key);
1218 }
1219
1220
1221 /*
1222   log a rpc packet in a format suitable for ndrdump. This is especially useful
1223   for sealed packets, where ethereal cannot easily see the contents
1224
1225   this triggers on a debug level of >= 10
1226 */
1227 void dcerpc_log_packet(const struct dcerpc_interface_table *ndr,
1228                        uint32_t opnum, uint32_t flags, DATA_BLOB *pkt)
1229 {
1230         const int num_examples = 20;
1231         int i;
1232
1233         if (DEBUGLEVEL < 10) return;
1234
1235         for (i=0;i<num_examples;i++) {
1236                 char *name=NULL;
1237                 asprintf(&name, "%s/rpclog/%s-%u.%d.%s",
1238                          lp_lockdir(), ndr->name, opnum, i,
1239                          (flags&NDR_IN)?"in":"out");
1240                 if (name == NULL) {
1241                         return;
1242                 }
1243                 if (!file_exist(name)) {
1244                         if (file_save(name, pkt->data, pkt->length)) {
1245                                 DEBUG(10,("Logged rpc packet to %s\n", name));
1246                         }
1247                         free(name);
1248                         break;
1249                 }
1250                 free(name);
1251         }
1252 }
1253
1254
1255
1256 /*
1257   create a secondary context from a primary connection
1258
1259   this uses dcerpc_alter_context() to create a new dcerpc context_id
1260 */
1261 NTSTATUS dcerpc_secondary_context(struct dcerpc_pipe *p,
1262                                   struct dcerpc_pipe **pp2,
1263                                   const struct dcerpc_interface_table *table)
1264 {
1265         NTSTATUS status;
1266         struct dcerpc_pipe *p2;
1267
1268         p2 = talloc_zero(p, struct dcerpc_pipe);
1269         if (p2 == NULL) {
1270                 return NT_STATUS_NO_MEMORY;
1271         }
1272         p2->conn = talloc_reference(p2, p->conn);
1273         p2->request_timeout = p->request_timeout;
1274
1275         p2->context_id = ++p->conn->next_context_id;
1276
1277         p2->syntax.uuid = table->uuid;
1278         p2->syntax.if_version = table->if_version;
1279
1280         p2->transfer_syntax = ndr_transfer_syntax;
1281
1282         status = dcerpc_alter_context(p2, p2, &p2->syntax, &p2->transfer_syntax);
1283         if (!NT_STATUS_IS_OK(status)) {
1284                 talloc_free(p2);
1285                 return status;
1286         }
1287
1288         *pp2 = p2;
1289
1290         return status;
1291 }