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    Copyright (C) Rafal Szczesniak 2006
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 2 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program; if not, write to the Free Software
  23    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24 */
  25
  26 #include "includes.h"
  27 #include "lib/events/events.h"
  28 #include "libcli/composite/composite.h"
  29 #include "librpc/gen_ndr/ndr_epmapper.h"
  30 #include "librpc/gen_ndr/ndr_dcerpc.h"
  31 #include "librpc/gen_ndr/ndr_misc.h"
  32 #include "auth/credentials/credentials.h"
  33
  34 /*
  35   find a dcerpc call on an interface by name
  36 */
  37 const struct dcerpc_interface_call *dcerpc_iface_find_call(const struct dcerpc_interface_table *iface,
  38                                                            const char *name)
  39 {
  40         int i;
  41         for (i=0;i<iface->num_calls;i++) {
  42                 if (strcmp(iface->calls[i].name, name) == 0) {
  43                         return &iface->calls[i];
  44                 }
  45         }
  46         return NULL;
  47 }
  48
  49 /*
  50    push a ncacn_packet into a blob, potentially with auth info
  51 */
  52 NTSTATUS ncacn_push_auth(DATA_BLOB *blob, TALLOC_CTX *mem_ctx,
  53                           struct ncacn_packet *pkt,
  54                           struct dcerpc_auth *auth_info)
  55 {
  56         NTSTATUS status;
  57         struct ndr_push *ndr;
  58
  59         ndr = ndr_push_init_ctx(mem_ctx);
  60         if (!ndr) {
  61                 return NT_STATUS_NO_MEMORY;
  62         }
  63
  64         if (!(pkt->drep[0] & DCERPC_DREP_LE)) {
  65                 ndr->flags |= LIBNDR_FLAG_BIGENDIAN;
  66         }
  67
  68         if (pkt->pfc_flags & DCERPC_PFC_FLAG_ORPC) {
  69                 ndr->flags |= LIBNDR_FLAG_OBJECT_PRESENT;
  70         }
  71
  72         if (auth_info) {
  73                 pkt->auth_length = auth_info->credentials.length;
  74         } else {
  75                 pkt->auth_length = 0;
  76         }
  77
  78         status = ndr_push_ncacn_packet(ndr, NDR_SCALARS|NDR_BUFFERS, pkt);
  79         if (!NT_STATUS_IS_OK(status)) {
  80                 return status;
  81         }
  82
  83         if (auth_info) {
  84                 status = ndr_push_dcerpc_auth(ndr, NDR_SCALARS|NDR_BUFFERS, auth_info);
  85         }
  86
  87         *blob = ndr_push_blob(ndr);
  88
  89         /* fill in the frag length */
  90         dcerpc_set_frag_length(blob, blob->length);
  91
  92         return NT_STATUS_OK;
  93 }
  94
  95 #define MAX_PROTSEQ             10
  96
  97 static const struct {
  98         const char *name;
  99         enum dcerpc_transport_t transport;
 100         int num_protocols;
 101         enum epm_protocol protseq[MAX_PROTSEQ];
 102 } transports[] = {
 103         { "ncacn_np",     NCACN_NP, 3,
 104                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_SMB, EPM_PROTOCOL_NETBIOS }},
 105         { "ncacn_ip_tcp", NCACN_IP_TCP, 3,
 106                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_TCP, EPM_PROTOCOL_IP } },
 107         { "ncacn_http", NCACN_HTTP, 3,
 108                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_HTTP, EPM_PROTOCOL_IP } },
 109         { "ncadg_ip_udp", NCACN_IP_UDP, 3,
 110                 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UDP, EPM_PROTOCOL_IP } },
 111         { "ncalrpc", NCALRPC, 2,
 112                 { EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_PIPE } },
 113         { "ncacn_unix_stream", NCACN_UNIX_STREAM, 2,
 114                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_UNIX_DS } },
 115         { "ncadg_unix_dgram", NCADG_UNIX_DGRAM, 2,
 116                 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UNIX_DS } },
 117         { "ncacn_at_dsp", NCACN_AT_DSP, 3,
 118                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DSP } },
 119         { "ncadg_at_ddp", NCADG_AT_DDP, 3,
 120                 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DDP } },
 121         { "ncacn_vns_ssp", NCACN_VNS_SPP, 3,
 122                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_SPP } },
 123         { "ncacn_vns_ipc", NCACN_VNS_IPC, 3,
 124                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_IPC }, },
 125         { "ncadg_ipx", NCADG_IPX, 2,
 126                 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_IPX },
 127         },
 128         { "ncacn_spx", NCACN_SPX, 3,
 129                 /* I guess some MS programmer confused the identifier for
 130                  * EPM_PROTOCOL_UUID (0x0D or 13) with the one for
 131                  * EPM_PROTOCOL_SPX (0x13) here. -- jelmer*/
 132                 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_UUID },
 133         },
 134 };
 135
 136 static const struct {
 137         const char *name;
 138         uint32_t flag;
 139 } ncacn_options[] = {
 140         {"sign", DCERPC_SIGN},
 141         {"seal", DCERPC_SEAL},
 142         {"connect", DCERPC_CONNECT},
 143         {"spnego", DCERPC_AUTH_SPNEGO},
 144         {"krb5", DCERPC_AUTH_KRB5},
 145         {"validate", DCERPC_DEBUG_VALIDATE_BOTH},
 146         {"print", DCERPC_DEBUG_PRINT_BOTH},
 147         {"padcheck", DCERPC_DEBUG_PAD_CHECK},
 148         {"bigendian", DCERPC_PUSH_BIGENDIAN},
 149         {"smb2", DCERPC_SMB2}
 150 };
 151
 152 const char *epm_floor_string(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor)
 153 {
 154         struct GUID uuid;
 155         uint16_t if_version;
 156         NTSTATUS status;
 157
 158         switch(epm_floor->lhs.protocol) {
 159                 case EPM_PROTOCOL_UUID:
 160                         status = dcerpc_floor_get_lhs_data(epm_floor, &uuid, &if_version);
 161                         if (NT_STATUS_IS_OK(status)) {
 162                                 /* lhs is used: UUID */
 163                                 char *uuidstr;
 164
 165                                 if (GUID_equal(&uuid, &ndr_transfer_syntax.uuid)) {
 166                                         return "NDR";
 167                                 }
 168
 169                                 if (GUID_equal(&uuid, &ndr64_transfer_syntax.uuid)) {
 170                                         return "NDR64";
 171                                 }
 172
 173                                 uuidstr = GUID_string(mem_ctx, &uuid);
 174
 175                                 return talloc_asprintf(mem_ctx, " uuid %s/0x%02x", uuidstr, if_version);
 176                         } else { /* IPX */
 177                                 return talloc_asprintf(mem_ctx, "IPX:%s",
 178                                                 data_blob_hex_string(mem_ctx, &epm_floor->rhs.uuid.unknown));
 179                         }
 180
 181                 case EPM_PROTOCOL_NCACN:
 182                         return "RPC-C";
 183
 184                 case EPM_PROTOCOL_NCADG:
 185                         return "RPC";
 186
 187                 case EPM_PROTOCOL_NCALRPC:
 188                         return "NCALRPC";
 189
 190                 case EPM_PROTOCOL_DNET_NSP:
 191                         return "DNET/NSP";
 192
 193                 case EPM_PROTOCOL_IP:
 194                         return talloc_asprintf(mem_ctx, "IP:%s", epm_floor->rhs.ip.ipaddr);
 195
 196                 case EPM_PROTOCOL_PIPE:
 197                         return talloc_asprintf(mem_ctx, "PIPE:%s", epm_floor->rhs.pipe.path);
 198
 199                 case EPM_PROTOCOL_SMB:
 200                         return talloc_asprintf(mem_ctx, "SMB:%s", epm_floor->rhs.smb.unc);
 201
 202                 case EPM_PROTOCOL_UNIX_DS:
 203                         return talloc_asprintf(mem_ctx, "Unix:%s", epm_floor->rhs.unix_ds.path);
 204
 205                 case EPM_PROTOCOL_NETBIOS:
 206                         return talloc_asprintf(mem_ctx, "NetBIOS:%s", epm_floor->rhs.netbios.name);
 207
 208                 case EPM_PROTOCOL_NETBEUI:
 209                         return "NETBeui";
 210
 211                 case EPM_PROTOCOL_SPX:
 212                         return "SPX";
 213
 214                 case EPM_PROTOCOL_NB_IPX:
 215                         return "NB_IPX";
 216
 217                 case EPM_PROTOCOL_HTTP:
 218                         return talloc_asprintf(mem_ctx, "HTTP:%d", epm_floor->rhs.http.port);
 219
 220                 case EPM_PROTOCOL_TCP:
 221                         return talloc_asprintf(mem_ctx, "TCP:%d", epm_floor->rhs.tcp.port);
 222
 223                 case EPM_PROTOCOL_UDP:
 224                         return talloc_asprintf(mem_ctx, "UDP:%d", epm_floor->rhs.udp.port);
 225
 226                 default:
 227                         return talloc_asprintf(mem_ctx, "UNK(%02x):", epm_floor->lhs.protocol);
 228         }
 229 }
 230
 231
 232 /*
 233   form a binding string from a binding structure
 234 */
 235 const char *dcerpc_binding_string(TALLOC_CTX *mem_ctx, const struct dcerpc_binding *b)
 236 {
 237         char *s = talloc_strdup(mem_ctx, "");
 238         int i;
 239         const char *t_name=NULL;
 240
 241         for (i=0;i<ARRAY_SIZE(transports);i++) {
 242                 if (transports[i].transport == b->transport) {
 243                         t_name = transports[i].name;
 244                 }
 245         }
 246         if (!t_name) {
 247                 return NULL;
 248         }
 249
 250         if (!GUID_all_zero(&b->object)) {
 251                 s = talloc_asprintf(s, "%s@",
 252                                     GUID_string(mem_ctx, &b->object));
 253         }
 254
 255         s = talloc_asprintf_append(s, "%s:", t_name);
 256         if (!s) return NULL;
 257
 258         if (b->host) {
 259                 s = talloc_asprintf_append(s, "%s", b->host);
 260         }
 261
 262         if (!b->endpoint && !b->options && !b->flags) {
 263                 return s;
 264         }
 265
 266         s = talloc_asprintf_append(s, "[");
 267
 268         if (b->endpoint) {
 269                 s = talloc_asprintf_append(s, "%s", b->endpoint);
 270         }
 271
 272         /* this is a *really* inefficent way of dealing with strings,
 273            but this is rarely called and the strings are always short,
 274            so I don't care */
 275         for (i=0;b->options && b->options[i];i++) {
 276                 s = talloc_asprintf_append(s, ",%s", b->options[i]);
 277                 if (!s) return NULL;
 278         }
 279
 280         for (i=0;i<ARRAY_SIZE(ncacn_options);i++) {
 281                 if (b->flags & ncacn_options[i].flag) {
 282                         s = talloc_asprintf_append(s, ",%s", ncacn_options[i].name);
 283                         if (!s) return NULL;
 284                 }
 285         }
 286
 287         s = talloc_asprintf_append(s, "]");
 288
 289         return s;
 290 }
 291
 292 /*
 293   parse a binding string into a dcerpc_binding structure
 294 */
 295 NTSTATUS dcerpc_parse_binding(TALLOC_CTX *mem_ctx, const char *s, struct dcerpc_binding **b_out)
 296 {
 297         struct dcerpc_binding *b;
 298         char *options, *type;
 299         char *p;
 300         int i, j, comma_count;
 301
 302         b = talloc(mem_ctx, struct dcerpc_binding);
 303         if (!b) {
 304                 return NT_STATUS_NO_MEMORY;
 305         }
 306
 307         p = strchr(s, '@');
 308
 309         if (p && PTR_DIFF(p, s) == 36) { /* 36 is the length of a UUID */
 310                 NTSTATUS status;
 311
 312                 status = GUID_from_string(s, &b->object);
 313
 314                 if (NT_STATUS_IS_ERR(status)) {
 315                         DEBUG(0, ("Failed parsing UUID\n"));
 316                         return status;
 317                 }
 318
 319                 s = p + 1;
 320         } else {
 321                 ZERO_STRUCT(b->object);
 322         }
 323
 324         b->object_version = 0;
 325
 326         p = strchr(s, ':');
 327         if (!p) {
 328                 return NT_STATUS_INVALID_PARAMETER;
 329         }
 330
 331         type = talloc_strndup(mem_ctx, s, PTR_DIFF(p, s));
 332         if (!type) {
 333                 return NT_STATUS_NO_MEMORY;
 334         }
 335
 336         for (i=0;i<ARRAY_SIZE(transports);i++) {
 337                 if (strcasecmp(type, transports[i].name) == 0) {
 338                         b->transport = transports[i].transport;
 339                         break;
 340                 }
 341         }
 342         if (i==ARRAY_SIZE(transports)) {
 343                 DEBUG(0,("Unknown dcerpc transport '%s'\n", type));
 344                 return NT_STATUS_INVALID_PARAMETER;
 345         }
 346
 347         s = p+1;
 348
 349         p = strchr(s, '[');
 350         if (p) {
 351                 b->host = talloc_strndup(b, s, PTR_DIFF(p, s));
 352                 options = talloc_strdup(mem_ctx, p+1);
 353                 if (options[strlen(options)-1] != ']') {
 354                         return NT_STATUS_INVALID_PARAMETER;
 355                 }
 356                 options[strlen(options)-1] = 0;
 357         } else {
 358                 b->host = talloc_strdup(b, s);
 359                 options = NULL;
 360         }
 361
 362         if (!b->host) {
 363                 return NT_STATUS_NO_MEMORY;
 364         }
 365
 366         b->options = NULL;
 367         b->flags = 0;
 368         b->endpoint = NULL;
 369
 370         if (!options) {
 371                 *b_out = b;
 372                 return NT_STATUS_OK;
 373         }
 374
 375         comma_count = count_chars(options, ',');
 376
 377         b->options = talloc_array(b, const char *, comma_count+2);
 378         if (!b->options) {
 379                 return NT_STATUS_NO_MEMORY;
 380         }
 381
 382         for (i=0; (p = strchr(options, ',')); i++) {
 383                 b->options[i] = talloc_strndup(b, options, PTR_DIFF(p, options));
 384                 if (!b->options[i]) {
 385                         return NT_STATUS_NO_MEMORY;
 386                 }
 387                 options = p+1;
 388         }
 389         b->options[i] = options;
 390         b->options[i+1] = NULL;
 391
 392         /* some options are pre-parsed for convenience */
 393         for (i=0;b->options[i];i++) {
 394                 for (j=0;j<ARRAY_SIZE(ncacn_options);j++) {
 395                         if (strcasecmp(ncacn_options[j].name, b->options[i]) == 0) {
 396                                 int k;
 397                                 b->flags |= ncacn_options[j].flag;
 398                                 for (k=i;b->options[k];k++) {
 399                                         b->options[k] = b->options[k+1];
 400                                 }
 401                                 i--;
 402                                 break;
 403                         }
 404                 }
 405         }
 406
 407         if (b->options[0]) {
 408                 /* Endpoint is first option */
 409                 b->endpoint = b->options[0];
 410                 if (strlen(b->endpoint) == 0) b->endpoint = NULL;
 411
 412                 for (i=0;b->options[i];i++) {
 413                         b->options[i] = b->options[i+1];
 414                 }
 415         }
 416
 417         if (b->options[0] == NULL)
 418                 b->options = NULL;
 419
 420         *b_out = b;
 421         return NT_STATUS_OK;
 422 }
 423
 424 NTSTATUS dcerpc_floor_get_lhs_data(struct epm_floor *epm_floor, struct GUID *uuid, uint16_t *if_version)
 425 {
 426         TALLOC_CTX *mem_ctx = talloc_init("floor_get_lhs_data");
 427         struct ndr_pull *ndr = ndr_pull_init_blob(&epm_floor->lhs.lhs_data, mem_ctx);
 428         NTSTATUS status;
 429
 430         ndr->flags |= LIBNDR_FLAG_NOALIGN;
 431
 432         status = ndr_pull_GUID(ndr, NDR_SCALARS | NDR_BUFFERS, uuid);
 433         if (NT_STATUS_IS_ERR(status)) {
 434                 talloc_free(mem_ctx);
 435                 return status;
 436         }
 437
 438         status = ndr_pull_uint16(ndr, NDR_SCALARS, if_version);
 439
 440         talloc_free(mem_ctx);
 441
 442         return status;
 443 }
 444
 445 static DATA_BLOB dcerpc_floor_pack_lhs_data(TALLOC_CTX *mem_ctx, const struct GUID *uuid, uint32_t if_version)
 446 {
 447         struct ndr_push *ndr = ndr_push_init_ctx(mem_ctx);
 448
 449         ndr->flags |= LIBNDR_FLAG_NOALIGN;
 450
 451         ndr_push_GUID(ndr, NDR_SCALARS | NDR_BUFFERS, uuid);
 452         ndr_push_uint16(ndr, NDR_SCALARS, if_version);
 453
 454         return ndr_push_blob(ndr);
 455 }
 456
 457 const char *dcerpc_floor_get_rhs_data(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor)
 458 {
 459         switch (epm_floor->lhs.protocol) {
 460         case EPM_PROTOCOL_TCP:
 461                 if (epm_floor->rhs.tcp.port == 0) return NULL;
 462                 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.tcp.port);
 463
 464         case EPM_PROTOCOL_UDP:
 465                 if (epm_floor->rhs.udp.port == 0) return NULL;
 466                 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.udp.port);
 467
 468         case EPM_PROTOCOL_HTTP:
 469                 if (epm_floor->rhs.http.port == 0) return NULL;
 470                 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.http.port);
 471
 472         case EPM_PROTOCOL_IP:
 473                 return talloc_strdup(mem_ctx, epm_floor->rhs.ip.ipaddr);
 474
 475         case EPM_PROTOCOL_NCACN:
 476                 return NULL;
 477
 478         case EPM_PROTOCOL_NCADG:
 479                 return NULL;
 480
 481         case EPM_PROTOCOL_SMB:
 482                 if (strlen(epm_floor->rhs.smb.unc) == 0) return NULL;
 483                 return talloc_strdup(mem_ctx, epm_floor->rhs.smb.unc);
 484
 485         case EPM_PROTOCOL_PIPE:
 486                 if (strlen(epm_floor->rhs.pipe.path) == 0) return NULL;
 487                 return talloc_strdup(mem_ctx, epm_floor->rhs.pipe.path);
 488
 489         case EPM_PROTOCOL_NETBIOS:
 490                 if (strlen(epm_floor->rhs.netbios.name) == 0) return NULL;
 491                 return talloc_strdup(mem_ctx, epm_floor->rhs.netbios.name);
 492
 493         case EPM_PROTOCOL_NCALRPC:
 494                 return NULL;
 495
 496         case EPM_PROTOCOL_VINES_SPP:
 497                 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.vines_spp.port);
 498
 499         case EPM_PROTOCOL_VINES_IPC:
 500                 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.vines_ipc.port);
 501
 502         case EPM_PROTOCOL_STREETTALK:
 503                 return talloc_strdup(mem_ctx, epm_floor->rhs.streettalk.streettalk);
 504
 505         case EPM_PROTOCOL_UNIX_DS:
 506                 if (strlen(epm_floor->rhs.unix_ds.path) == 0) return NULL;
 507                 return talloc_strdup(mem_ctx, epm_floor->rhs.unix_ds.path);
 508
 509         case EPM_PROTOCOL_NULL:
 510                 return NULL;
 511
 512         default:
 513                 DEBUG(0,("Unsupported lhs protocol %d\n", epm_floor->lhs.protocol));
 514                 break;
 515         }
 516
 517         return NULL;
 518 }
 519
 520 static NTSTATUS dcerpc_floor_set_rhs_data(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor,  const char *data)
 521 {
 522         switch (epm_floor->lhs.protocol) {
 523         case EPM_PROTOCOL_TCP:
 524                 epm_floor->rhs.tcp.port = atoi(data);
 525                 return NT_STATUS_OK;
 526
 527         case EPM_PROTOCOL_UDP:
 528                 epm_floor->rhs.udp.port = atoi(data);
 529                 return NT_STATUS_OK;
 530
 531         case EPM_PROTOCOL_HTTP:
 532                 epm_floor->rhs.http.port = atoi(data);
 533                 return NT_STATUS_OK;
 534
 535         case EPM_PROTOCOL_IP:
 536                 epm_floor->rhs.ip.ipaddr = talloc_strdup(mem_ctx, data);
 537                 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.ip.ipaddr);
 538                 return NT_STATUS_OK;
 539
 540         case EPM_PROTOCOL_NCACN:
 541                 epm_floor->rhs.ncacn.minor_version = 0;
 542                 return NT_STATUS_OK;
 543
 544         case EPM_PROTOCOL_NCADG:
 545                 epm_floor->rhs.ncadg.minor_version = 0;
 546                 return NT_STATUS_OK;
 547
 548         case EPM_PROTOCOL_SMB:
 549                 epm_floor->rhs.smb.unc = talloc_strdup(mem_ctx, data);
 550                 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.smb.unc);
 551                 return NT_STATUS_OK;
 552
 553         case EPM_PROTOCOL_PIPE:
 554                 epm_floor->rhs.pipe.path = talloc_strdup(mem_ctx, data);
 555                 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.pipe.path);
 556                 return NT_STATUS_OK;
 557
 558         case EPM_PROTOCOL_NETBIOS:
 559                 epm_floor->rhs.netbios.name = talloc_strdup(mem_ctx, data);
 560                 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.netbios.name);
 561                 return NT_STATUS_OK;
 562
 563         case EPM_PROTOCOL_NCALRPC:
 564                 return NT_STATUS_OK;
 565
 566         case EPM_PROTOCOL_VINES_SPP:
 567                 epm_floor->rhs.vines_spp.port = atoi(data);
 568                 return NT_STATUS_OK;
 569
 570         case EPM_PROTOCOL_VINES_IPC:
 571                 epm_floor->rhs.vines_ipc.port = atoi(data);
 572                 return NT_STATUS_OK;
 573
 574         case EPM_PROTOCOL_STREETTALK:
 575                 epm_floor->rhs.streettalk.streettalk = talloc_strdup(mem_ctx, data);
 576                 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.streettalk.streettalk);
 577                 return NT_STATUS_OK;
 578
 579         case EPM_PROTOCOL_UNIX_DS:
 580                 epm_floor->rhs.unix_ds.path = talloc_strdup(mem_ctx, data);
 581                 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.unix_ds.path);
 582                 return NT_STATUS_OK;
 583
 584         case EPM_PROTOCOL_NULL:
 585                 return NT_STATUS_OK;
 586
 587         default:
 588                 DEBUG(0,("Unsupported lhs protocol %d\n", epm_floor->lhs.protocol));
 589                 break;
 590         }
 591
 592         return NT_STATUS_NOT_SUPPORTED;
 593 }
 594
 595 enum dcerpc_transport_t dcerpc_transport_by_endpoint_protocol(int prot)
 596 {
 597         int i;
 598
 599         /* Find a transport that has 'prot' as 4th protocol */
 600         for (i=0;i<ARRAY_SIZE(transports);i++) {
 601                 if (transports[i].num_protocols >= 2 &&
 602                         transports[i].protseq[1] == prot) {
 603                         return transports[i].transport;
 604                 }
 605         }
 606
 607         /* Unknown transport */
 608         return -1;
 609 }
 610
 611 enum dcerpc_transport_t dcerpc_transport_by_tower(struct epm_tower *tower)
 612 {
 613         int i;
 614
 615         /* Find a transport that matches this tower */
 616         for (i=0;i<ARRAY_SIZE(transports);i++) {
 617                 int j;
 618                 if (transports[i].num_protocols != tower->num_floors - 2) {
 619                         continue;
 620                 }
 621
 622                 for (j = 0; j < transports[i].num_protocols; j++) {
 623                         if (transports[i].protseq[j] != tower->floors[j+2].lhs.protocol) {
 624                                 break;
 625                         }
 626                 }
 627
 628                 if (j == transports[i].num_protocols) {
 629                         return transports[i].transport;
 630                 }
 631         }
 632
 633         /* Unknown transport */
 634         return -1;
 635 }
 636
 637 NTSTATUS dcerpc_binding_from_tower(TALLOC_CTX *mem_ctx, struct epm_tower *tower, struct dcerpc_binding **b_out)
 638 {
 639         NTSTATUS status;
 640         struct dcerpc_binding *binding;
 641
 642         binding = talloc(mem_ctx, struct dcerpc_binding);
 643         NT_STATUS_HAVE_NO_MEMORY(binding);
 644
 645         ZERO_STRUCT(binding->object);
 646         binding->options = NULL;
 647         binding->host = NULL;
 648         binding->flags = 0;
 649
 650         binding->transport = dcerpc_transport_by_tower(tower);
 651
 652         if (binding->transport == -1) {
 653                 return NT_STATUS_NOT_SUPPORTED;
 654         }
 655
 656         if (tower->num_floors < 1) {
 657                 return NT_STATUS_OK;
 658         }
 659
 660         /* Set object uuid */
 661         status = dcerpc_floor_get_lhs_data(&tower->floors[0], &binding->object, &binding->object_version);
 662
 663         if (!NT_STATUS_IS_OK(status)) {
 664                 DEBUG(1, ("Error pulling object uuid and version: %s", nt_errstr(status)));
 665                 return status;
 666         }
 667
 668         /* Ignore floor 1, it contains the NDR version info */
 669
 670         binding->options = NULL;
 671
 672         /* Set endpoint */
 673         if (tower->num_floors >= 4) {
 674                 binding->endpoint = dcerpc_floor_get_rhs_data(mem_ctx, &tower->floors[3]);
 675         } else {
 676                 binding->endpoint = NULL;
 677         }
 678
 679         /* Set network address */
 680         if (tower->num_floors >= 5) {
 681                 binding->host = dcerpc_floor_get_rhs_data(mem_ctx, &tower->floors[4]);
 682         }
 683         *b_out = binding;
 684         return NT_STATUS_OK;
 685 }
 686
 687 NTSTATUS dcerpc_binding_build_tower(TALLOC_CTX *mem_ctx, struct dcerpc_binding *binding, struct epm_tower *tower)
 688 {
 689         const enum epm_protocol *protseq = NULL;
 690         int num_protocols = -1, i;
 691         NTSTATUS status;
 692
 693         /* Find transport */
 694         for (i=0;i<ARRAY_SIZE(transports);i++) {
 695                 if (transports[i].transport == binding->transport) {
 696                         protseq = transports[i].protseq;
 697                         num_protocols = transports[i].num_protocols;
 698                         break;
 699                 }
 700         }
 701
 702         if (num_protocols == -1) {
 703                 DEBUG(0, ("Unable to find transport with id '%d'\n", binding->transport));
 704                 return NT_STATUS_UNSUCCESSFUL;
 705         }
 706
 707         tower->num_floors = 2 + num_protocols;
 708         tower->floors = talloc_array(mem_ctx, struct epm_floor, tower->num_floors);
 709
 710         /* Floor 0 */
 711         tower->floors[0].lhs.protocol = EPM_PROTOCOL_UUID;
 712
 713         tower->floors[0].lhs.lhs_data = dcerpc_floor_pack_lhs_data(mem_ctx, &binding->object, binding->object_version);
 714
 715         tower->floors[0].rhs.uuid.unknown = data_blob_talloc_zero(mem_ctx, 2);
 716
 717         /* Floor 1 */
 718         tower->floors[1].lhs.protocol = EPM_PROTOCOL_UUID;
 719
 720         tower->floors[1].lhs.lhs_data = dcerpc_floor_pack_lhs_data(mem_ctx,
 721                                                                 &ndr_transfer_syntax.uuid,
 722                                                                 ndr_transfer_syntax.if_version);
 723
 724         tower->floors[1].rhs.uuid.unknown = data_blob_talloc_zero(mem_ctx, 2);
 725
 726         /* Floor 2 to num_protocols */
 727         for (i = 0; i < num_protocols; i++) {
 728                 tower->floors[2 + i].lhs.protocol = protseq[i];
 729                 tower->floors[2 + i].lhs.lhs_data = data_blob_talloc(mem_ctx, NULL, 0);
 730                 ZERO_STRUCT(tower->floors[2 + i].rhs);
 731                 dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[2 + i], "");
 732         }
 733
 734         /* The 4th floor contains the endpoint */
 735         if (num_protocols >= 2 && binding->endpoint) {
 736                 status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[3], binding->endpoint);
 737                 if (NT_STATUS_IS_ERR(status)) {
 738                         return status;
 739                 }
 740         }
 741
 742         /* The 5th contains the network address */
 743         if (num_protocols >= 3 && binding->host) {
 744                 if (is_ipaddress(binding->host)) {
 745                         status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[4],
 746                                                            binding->host);
 747                 } else {
 748                         /* note that we don't attempt to resolve the
 749                            name here - when we get a hostname here we
 750                            are in the client code, and want to put in
 751                            a wildcard all-zeros IP for the server to
 752                            fill in */
 753                         status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[4],
 754                                                            "0.0.0.0");
 755                 }
 756                 if (NT_STATUS_IS_ERR(status)) {
 757                         return status;
 758                 }
 759         }
 760
 761         return NT_STATUS_OK;
 762 }
 763
 764
 765 struct epm_map_binding_state {
 766         struct dcerpc_binding *binding;
 767         const struct dcerpc_interface_table *table;
 768         struct dcerpc_pipe *pipe;
 769         struct policy_handle handle;
 770         struct GUID guid;
 771         struct epm_twr_t twr;
 772         struct epm_twr_t *twr_r;
 773         struct epm_Map r;
 774 };
 775
 776
 777 static void continue_epm_recv_binding(struct composite_context *ctx);
 778 static void continue_epm_map(struct rpc_request *req);
 779
 780
 781 /*
 782   Stage 2 of epm_map_binding: Receive connected rpc pipe and send endpoint
 783   mapping rpc request
 784 */
 785 static void continue_epm_recv_binding(struct composite_context *ctx)
 786 {
 787         struct rpc_request *map_req;
 788
 789         struct composite_context *c = talloc_get_type(ctx->async.private_data,
 790                                                       struct composite_context);
 791         struct epm_map_binding_state *s = talloc_get_type(c->private_data,
 792                                                           struct epm_map_binding_state);
 793
 794         /* receive result of rpc pipe connect request */
 795         c->status = dcerpc_pipe_connect_b_recv(ctx, c, &s->pipe);
 796         if (!composite_is_ok(c)) return;
 797
 798         /* prepare requested binding parameters */
 799         s->binding->object         = s->table->uuid;
 800         s->binding->object_version = s->table->if_version;
 801
 802         c->status = dcerpc_binding_build_tower(s->pipe, s->binding, &s->twr.tower);
 803         if (!composite_is_ok(c)) return;
 804
 805         /* with some nice pretty paper around it of course */
 806         s->r.in.object        = &s->guid;
 807         s->r.in.map_tower     = &s->twr;
 808         s->r.in.entry_handle  = &s->handle;
 809         s->r.in.max_towers    = 1;
 810         s->r.out.entry_handle = &s->handle;
 811
 812         /* send request for an endpoint mapping - a rpc request on connected pipe */
 813         map_req = dcerpc_epm_Map_send(s->pipe, c, &s->r);
 814         if (composite_nomem(map_req, c)) return;
 815
 816         composite_continue_rpc(c, map_req, continue_epm_map, c);
 817 }
 818
 819
 820 /*
 821   Stage 3 of epm_map_binding: Receive endpoint mapping and provide binding details
 822 */
 823 static void continue_epm_map(struct rpc_request *req)
 824 {
 825         struct composite_context *c = talloc_get_type(req->async.private,
 826                                                       struct composite_context);
 827         struct epm_map_binding_state *s = talloc_get_type(c->private_data,
 828                                                           struct epm_map_binding_state);
 829
 830         /* receive result of a rpc request */
 831         c->status = dcerpc_ndr_request_recv(req);
 832         if (!composite_is_ok(c)) return;
 833
 834         /* check the details */
 835         if (s->r.out.result != 0 || s->r.out.num_towers != 1) {
 836                 composite_error(c, NT_STATUS_PORT_UNREACHABLE);
 837                 return;
 838         }
 839
 840         s->twr_r = s->r.out.towers[0].twr;
 841         if (s->twr_r == NULL) {
 842                 composite_error(c, NT_STATUS_PORT_UNREACHABLE);
 843                 return;
 844         }
 845
 846         if (s->twr_r->tower.num_floors != s->twr.tower.num_floors ||
 847             s->twr_r->tower.floors[3].lhs.protocol != s->twr.tower.floors[3].lhs.protocol) {
 848                 composite_error(c, NT_STATUS_PORT_UNREACHABLE);
 849                 return;
 850         }
 851
 852         /* get received endpoint */
 853         s->binding->endpoint = talloc_reference(s->binding,
 854                                                 dcerpc_floor_get_rhs_data(c, &s->twr_r->tower.floors[3]));
 855         composite_done(c);
 856 }
 857
 858
 859 /*
 860   Request for endpoint mapping of dcerpc binding - try to request for endpoint
 861   unless there is default one.
 862 */
 863 struct composite_context *dcerpc_epm_map_binding_send(TALLOC_CTX *mem_ctx,
 864                                                       struct dcerpc_binding *binding,
 865                                                       const struct dcerpc_interface_table *table,
 866                                                       struct event_context *ev)
 867 {
 868         struct composite_context *c;
 869         struct epm_map_binding_state *s;
 870         struct composite_context *pipe_connect_req;
 871         struct cli_credentials *anon_creds;
 872
 873         NTSTATUS status;
 874         struct dcerpc_binding *epmapper_binding;
 875         int i;
 876
 877         /* composite context allocation and setup */
 878         c = talloc_zero(mem_ctx, struct composite_context);
 879         if (c == NULL) return NULL;
 880
 881         s = talloc_zero(c, struct epm_map_binding_state);
 882         if (composite_nomem(s, c)) return c;
 883
 884         c->state = COMPOSITE_STATE_IN_PROGRESS;
 885         c->private_data = s;
 886         c->event_ctx = ev;
 887
 888         /* Try to find event context in memory context in case passed
 889          * event_context (argument) was NULL. If there's none, just
 890          * create a new one.
 891          */
 892         if (c->event_ctx == NULL) {
 893                 c->event_ctx = event_context_find(mem_ctx);
 894         }
 895
 896         s->binding = binding;
 897         s->table   = table;
 898
 899         /* anonymous credentials for rpc connection used to get endpoint mapping */
 900         anon_creds = cli_credentials_init(mem_ctx);
 901         cli_credentials_set_conf(anon_creds);
 902         cli_credentials_set_anonymous(anon_creds);
 903
 904         /*
 905           First, check if there is a default endpoint specified in the IDL
 906         */
 907         if (table) {
 908                 struct dcerpc_binding *default_binding;
 909
 910                 /* Find one of the default pipes for this interface */
 911                 for (i = 0; i < table->endpoints->count; i++) {
 912                         status = dcerpc_parse_binding(mem_ctx, table->endpoints->names[i], &default_binding);
 913
 914                         if (NT_STATUS_IS_OK(status)) {
 915                                 if (default_binding->transport == binding->transport && default_binding->endpoint) {
 916                                         binding->endpoint = talloc_reference(binding, default_binding->endpoint);
 917                                         talloc_free(default_binding);
 918
 919                                         composite_done(c);
 920                                         return c;
 921
 922                                 } else {
 923                                         talloc_free(default_binding);
 924                                 }
 925                         }
 926                 }
 927         }
 928
 929         epmapper_binding = talloc_zero(c, struct dcerpc_binding);
 930         if (composite_nomem(epmapper_binding, c)) return c;
 931
 932         /* basic endpoint mapping data */
 933         epmapper_binding->transport  = binding->transport;
 934         epmapper_binding->host       = talloc_reference(epmapper_binding, binding->host);
 935         epmapper_binding->options    = NULL;
 936         epmapper_binding->flags      = 0;
 937         epmapper_binding->endpoint   = NULL;
 938
 939         /* initiate rpc pipe connection */
 940         pipe_connect_req = dcerpc_pipe_connect_b_send(c, &s->pipe, epmapper_binding, &dcerpc_table_epmapper,
 941                                                       anon_creds, c->event_ctx);
 942         if (composite_nomem(pipe_connect_req, c)) return c;
 943
 944         composite_continue(c, pipe_connect_req, continue_epm_recv_binding, c);
 945         return c;
 946 }
 947
 948
 949 /*
 950   Receive result of endpoint mapping request
 951  */
 952 NTSTATUS dcerpc_epm_map_binding_recv(struct composite_context *c)
 953 {
 954         NTSTATUS status = composite_wait(c);
 955
 956         talloc_free(c);
 957         return status;
 958 }
 959
 960
 961 /*
 962   Get endpoint mapping for rpc connection
 963 */
 964 NTSTATUS dcerpc_epm_map_binding(TALLOC_CTX *mem_ctx, struct dcerpc_binding *binding,
 965                                 const struct dcerpc_interface_table *table, struct event_context *ev)
 966 {
 967         struct composite_context *c;
 968
 969         c = dcerpc_epm_map_binding_send(mem_ctx, binding, table, ev);
 970         return dcerpc_epm_map_binding_recv(c);
 971 }
 972
 973
 974 struct pipe_auth_state {
 975         struct dcerpc_pipe *pipe;
 976         struct dcerpc_binding *binding;
 977         const struct dcerpc_interface_table *table;
 978         struct cli_credentials *credentials;
 979 };
 980
 981
 982 static void continue_auth_schannel(struct composite_context *ctx);
 983 static void continue_auth(struct composite_context *ctx);
 984 static void continue_auth_none(struct composite_context *ctx);
 985
 986
 987 /*
 988   Stage 2 of pipe_auth: Receive result of schannel bind request
 989 */
 990 static void continue_auth_schannel(struct composite_context *ctx)
 991 {
 992         struct composite_context *c = talloc_get_type(ctx->async.private_data,
 993                                                       struct composite_context);
 994
 995         c->status = dcerpc_bind_auth_schannel_recv(ctx);
 996         if (!composite_is_ok(c)) return;
 997
 998         composite_done(c);
 999 }
1000
1001
1002 /*
1003   Stage 2 of pipe_auth: Receive result of authenticated bind request
1004 */
1005 static void continue_auth(struct composite_context *ctx)
1006 {
1007         struct composite_context *c = talloc_get_type(ctx->async.private_data,
1008                                                       struct composite_context);
1009
1010         c->status = dcerpc_bind_auth_recv(ctx);
1011         if (!composite_is_ok(c)) return;
1012
1013         composite_done(c);
1014 }
1015
1016
1017 /*
1018   Stage 2 of pipe_auth: Receive result of non-authenticated bind request
1019 */
1020 static void continue_auth_none(struct composite_context *ctx)
1021 {
1022         struct composite_context *c = talloc_get_type(ctx->async.private_data,
1023                                                       struct composite_context);
1024
1025         c->status = dcerpc_bind_auth_none_recv(ctx);
1026         if (!composite_is_ok(c)) return;
1027
1028         composite_done(c);
1029 }
1030
1031
1032 /*
1033   Request to perform an authenticated bind if required. Authentication
1034   is determined using credentials passed and binding flags.
1035 */
1036 struct composite_context *dcerpc_pipe_auth_send(struct dcerpc_pipe *p,
1037                                                 struct dcerpc_binding *binding,
1038                                                 const struct dcerpc_interface_table *table,
1039                                                 struct cli_credentials *credentials)
1040 {
1041         struct composite_context *c;
1042         struct pipe_auth_state *s;
1043         struct composite_context *auth_schannel_req;
1044         struct composite_context *auth_req;
1045         struct composite_context *auth_none_req;
1046
1047         /* composite context allocation and setup */
1048         c = talloc_zero(NULL, struct composite_context);
1049         if (c == NULL) return NULL;
1050
1051         s = talloc_zero(c, struct pipe_auth_state);
1052         if (composite_nomem(s, c)) return c;
1053
1054         c->state = COMPOSITE_STATE_IN_PROGRESS;
1055         c->private_data = s;
1056         c->event_ctx = p->conn->event_ctx;
1057
1058         /* store parameters in state structure */
1059         s->binding      = binding;
1060         s->table        = table;
1061         s->credentials  = credentials;
1062         s->pipe         = p;
1063
1064         s->pipe->conn->flags = binding->flags;
1065
1066         /* remember the binding string for possible secondary connections */
1067         s->pipe->conn->binding_string = dcerpc_binding_string(p, binding);
1068
1069         if (!cli_credentials_is_anonymous(s->credentials) &&
1070             (binding->flags & DCERPC_SCHANNEL) &&
1071             !cli_credentials_get_netlogon_creds(s->credentials)) {
1072
1073                 /* If we don't already have netlogon credentials for
1074                  * the schannel bind, then we have to get these
1075                  * first */
1076                 auth_schannel_req = dcerpc_bind_auth_schannel_send(c, s->pipe, s->table,
1077                                                                    s->credentials,
1078                                                                    dcerpc_auth_level(s->pipe->conn));
1079                 if (composite_nomem(auth_schannel_req, c)) return c;
1080
1081                 composite_continue(c, auth_schannel_req, continue_auth_schannel, c);
1082
1083         } else if (!cli_credentials_is_anonymous(s->credentials) &&
1084                    !(s->pipe->conn->transport.transport == NCACN_NP &&
1085                      !(s->binding->flags & DCERPC_SIGN) &&
1086                      !(s->binding->flags & DCERPC_SEAL))) {
1087
1088                 /* Perform an authenticated DCE-RPC bind, except where
1089                  * we ask for a connection on NCACN_NP, and that
1090                  * connection is not signed or sealed.  For that case
1091                  * we rely on the already authenticated CIFS connection
1092                  */
1093
1094                 uint8_t auth_type;
1095
1096                 if ((s->pipe->conn->flags & (DCERPC_SIGN|DCERPC_SEAL)) == 0) {
1097                         /*
1098                           we are doing an authenticated connection,
1099                           but not using sign or seal. We must force
1100                           the CONNECT dcerpc auth type as a NONE auth
1101                           type doesn't allow authentication
1102                           information to be passed.
1103                         */
1104                         s->pipe->conn->flags |= DCERPC_CONNECT;
1105                 }
1106
1107                 if (s->binding->flags & DCERPC_AUTH_SPNEGO) {
1108                         auth_type = DCERPC_AUTH_TYPE_SPNEGO;
1109
1110                 } else if (s->binding->flags & DCERPC_AUTH_KRB5) {
1111                         auth_type = DCERPC_AUTH_TYPE_KRB5;
1112
1113                 } else if (s->binding->flags & DCERPC_SCHANNEL) {
1114                         auth_type = DCERPC_AUTH_TYPE_SCHANNEL;
1115
1116                 } else {
1117                         auth_type = DCERPC_AUTH_TYPE_NTLMSSP;
1118                 }
1119
1120                 auth_req = dcerpc_bind_auth_send(c, s->pipe, s->table,
1121                                                  s->credentials, auth_type,
1122                                                  dcerpc_auth_level(s->pipe->conn),
1123                                                  s->table->authservices->names[0]);
1124                 if (composite_nomem(auth_req, c)) return c;
1125
1126                 composite_continue(c, auth_req, continue_auth, c);
1127
1128         } else {
1129                 auth_none_req = dcerpc_bind_auth_none_send(c, s->pipe, s->table);
1130                 if (composite_nomem(auth_none_req, c)) return c;
1131
1132                 composite_continue(c, auth_none_req, continue_auth_none, c);
1133         }
1134
1135         return c;
1136 }
1137
1138
1139 /*
1140   Receive result of authenticated bind request on dcerpc pipe
1141 */
1142 NTSTATUS dcerpc_pipe_auth_recv(struct composite_context *c)
1143 {
1144         NTSTATUS status;
1145
1146         struct pipe_auth_state *s = talloc_get_type(c->private_data,
1147                                                     struct pipe_auth_state);
1148         status = composite_wait(c);
1149         if (!NT_STATUS_IS_OK(status)) {
1150                 char *uuid_str = GUID_string(s->pipe, &s->table->uuid);
1151                 DEBUG(0, ("Failed to bind to uuid %s - %s\n", uuid_str, nt_errstr(status)));
1152                 talloc_free(uuid_str);
1153         }
1154
1155         talloc_free(c);
1156         return status;
1157 }
1158
1159
1160 /*
1161    Perform an authenticated bind if needed - sync version
1162 */
1163 NTSTATUS dcerpc_pipe_auth(struct dcerpc_pipe *p,
1164                           struct dcerpc_binding *binding,
1165                           const struct dcerpc_interface_table *table,
1166                           struct cli_credentials *credentials)
1167 {
1168         struct composite_context *c;
1169
1170         c = dcerpc_pipe_auth_send(p, binding, table, credentials);
1171         return dcerpc_pipe_auth_recv(c);
1172 }
1173
1174
1175 NTSTATUS dcerpc_generic_session_key(struct dcerpc_connection *c,
1176                                     DATA_BLOB *session_key)
1177 {
1178         /* this took quite a few CPU cycles to find ... */
1179         session_key->data = discard_const_p(unsigned char, "SystemLibraryDTC");
1180         session_key->length = 16;
1181         return NT_STATUS_OK;
1182 }
1183
1184 /*
1185   fetch the user session key - may be default (above) or the SMB session key
1186 */
1187 NTSTATUS dcerpc_fetch_session_key(struct dcerpc_pipe *p,
1188                                   DATA_BLOB *session_key)
1189 {
1190         return p->conn->security_state.session_key(p->conn, session_key);
1191 }
1192
1193
1194 /*
1195   log a rpc packet in a format suitable for ndrdump. This is especially useful
1196   for sealed packets, where ethereal cannot easily see the contents
1197
1198   this triggers on a debug level of >= 10
1199 */
1200 void dcerpc_log_packet(const struct dcerpc_interface_table *ndr,
1201                        uint32_t opnum, uint32_t flags, DATA_BLOB *pkt)
1202 {
1203         const int num_examples = 20;
1204         int i;
1205
1206         if (DEBUGLEVEL < 10) return;
1207
1208         for (i=0;i<num_examples;i++) {
1209                 char *name=NULL;
1210                 asprintf(&name, "%s/rpclog/%s-%u.%d.%s",
1211                          lp_lockdir(), ndr->name, opnum, i,
1212                          (flags&NDR_IN)?"in":"out");
1213                 if (name == NULL) {
1214                         return;
1215                 }
1216                 if (!file_exist(name)) {
1217                         if (file_save(name, pkt->data, pkt->length)) {
1218                                 DEBUG(10,("Logged rpc packet to %s\n", name));
1219                         }
1220                         free(name);
1221                         break;
1222                 }
1223                 free(name);
1224         }
1225 }
1226
1227
1228
1229 /*
1230   create a secondary context from a primary connection
1231
1232   this uses dcerpc_alter_context() to create a new dcerpc context_id
1233 */
1234 NTSTATUS dcerpc_secondary_context(struct dcerpc_pipe *p,
1235                                   struct dcerpc_pipe **pp2,
1236                                   const struct dcerpc_interface_table *table)
1237 {
1238         NTSTATUS status;
1239         struct dcerpc_pipe *p2;
1240
1241         p2 = talloc_zero(p, struct dcerpc_pipe);
1242         if (p2 == NULL) {
1243                 return NT_STATUS_NO_MEMORY;
1244         }
1245         p2->conn = talloc_reference(p2, p->conn);
1246         p2->request_timeout = p->request_timeout;
1247
1248         p2->context_id = ++p->conn->next_context_id;
1249
1250         p2->syntax.uuid = table->uuid;
1251         p2->syntax.if_version = table->if_version;
1252
1253         p2->transfer_syntax = ndr_transfer_syntax;
1254
1255         status = dcerpc_alter_context(p2, p2, &p2->syntax, &p2->transfer_syntax);
1256         if (!NT_STATUS_IS_OK(status)) {
1257                 talloc_free(p2);
1258                 return status;
1259         }
1260
1261         *pp2 = p2;
1262
1263         return status;
1264 }