source/rpc_parse/parse_rpc.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  RPC Pipe client / server routines
   4  *  Copyright (C) Andrew Tridgell              1992-1997,
   5  *  Copyright (C) Luke Kenneth Casson Leighton 1996-1997,
   6  *  Copyright (C) Paul Ashton                       1997.
   7  *  Copyright (C) Jeremy Allison                    1999.
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, write to the Free Software
  21  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  */
  23
  24 #include "includes.h"
  25
  26 #undef DBGC_CLASS
  27 #define DBGC_CLASS DBGC_RPC_PARSE
  28
  29 /*******************************************************************
  30 interface/version dce/rpc pipe identification
  31 ********************************************************************/
  32
  33 #define TRANS_SYNT_V2                       \
  34 {                                           \
  35         {                                   \
  36                 0x8a885d04, 0x1ceb, 0x11c9, \
  37                 { 0x9f, 0xe8, 0x08, 0x00,   \
  38                 0x2b, 0x10, 0x48, 0x60 }    \
  39         }, 0x02                             \
  40 }
  41
  42 #define SYNT_NETLOGON_V2                    \
  43 {                                           \
  44         {                                   \
  45                 0x8a885d04, 0x1ceb, 0x11c9, \
  46                 { 0x9f, 0xe8, 0x08, 0x00,   \
  47                 0x2b, 0x10, 0x48, 0x60 }    \
  48         }, 0x02                             \
  49 }
  50
  51 #define SYNT_WKSSVC_V1                      \
  52 {                                           \
  53         {                                   \
  54                 0x6bffd098, 0xa112, 0x3610, \
  55                 { 0x98, 0x33, 0x46, 0xc3,   \
  56                 0xf8, 0x7e, 0x34, 0x5a }    \
  57         }, 0x01                             \
  58 }
  59
  60 #define SYNT_SRVSVC_V3                      \
  61 {                                           \
  62         {                                   \
  63                 0x4b324fc8, 0x1670, 0x01d3, \
  64                 { 0x12, 0x78, 0x5a, 0x47,   \
  65                 0xbf, 0x6e, 0xe1, 0x88 }    \
  66         }, 0x03                             \
  67 }
  68
  69 #define SYNT_LSARPC_V0                      \
  70 {                                           \
  71         {                                   \
  72                 0x12345778, 0x1234, 0xabcd, \
  73                 { 0xef, 0x00, 0x01, 0x23,   \
  74                 0x45, 0x67, 0x89, 0xab }    \
  75         }, 0x00                             \
  76 }
  77
  78 #define SYNT_SAMR_V1                        \
  79 {                                           \
  80         {                                   \
  81                 0x12345778, 0x1234, 0xabcd, \
  82                 { 0xef, 0x00, 0x01, 0x23,   \
  83                 0x45, 0x67, 0x89, 0xac }    \
  84         }, 0x01                             \
  85 }
  86
  87 #define SYNT_NETLOGON_V1                    \
  88 {                                           \
  89         {                                   \
  90                 0x12345678, 0x1234, 0xabcd, \
  91                 { 0xef, 0x00, 0x01, 0x23,   \
  92                 0x45, 0x67, 0xcf, 0xfb }    \
  93         }, 0x01                             \
  94 }
  95
  96 #define SYNT_WINREG_V1                      \
  97 {                                           \
  98         {                                   \
  99                 0x338cd001, 0x2244, 0x31f1, \
 100                 { 0xaa, 0xaa, 0x90, 0x00,   \
 101                 0x38, 0x00, 0x10, 0x03 }    \
 102         }, 0x01                             \
 103 }
 104
 105 #define SYNT_SPOOLSS_V1                     \
 106 {                                           \
 107         {                                   \
 108                 0x12345678, 0x1234, 0xabcd, \
 109                 { 0xef, 0x00, 0x01, 0x23,   \
 110                 0x45, 0x67, 0x89, 0xab }    \
 111         }, 0x01                             \
 112 }
 113
 114 #define SYNT_NONE_V0                        \
 115 {                                           \
 116         {                                   \
 117                 0x0, 0x0, 0x0,              \
 118                 { 0x00, 0x00, 0x00, 0x00,   \
 119                 0x00, 0x00, 0x00, 0x00 }    \
 120         }, 0x00                             \
 121 }
 122
 123 #define SYNT_NETDFS_V3                      \
 124 {                                           \
 125         {                                   \
 126                 0x4fc742e0, 0x4a10, 0x11cf, \
 127                 { 0x82, 0x73, 0x00, 0xaa,   \
 128                   0x00, 0x4a, 0xe6, 0x73 }  \
 129         }, 0x03                             \
 130 }
 131
 132 struct pipe_id_info pipe_names [] =
 133 {
 134         /* client pipe , abstract syntax , server pipe   , transfer syntax */
 135         { PIPE_LSARPC  , SYNT_LSARPC_V0  , PIPE_LSASS    , TRANS_SYNT_V2 },
 136         { PIPE_SAMR    , SYNT_SAMR_V1    , PIPE_LSASS    , TRANS_SYNT_V2 },
 137         { PIPE_NETLOGON, SYNT_NETLOGON_V1, PIPE_LSASS    , TRANS_SYNT_V2 },
 138         { PIPE_SRVSVC  , SYNT_SRVSVC_V3  , PIPE_NTSVCS   , TRANS_SYNT_V2 },
 139         { PIPE_WKSSVC  , SYNT_WKSSVC_V1  , PIPE_NTSVCS   , TRANS_SYNT_V2 },
 140         { PIPE_WINREG  , SYNT_WINREG_V1  , PIPE_WINREG   , TRANS_SYNT_V2 },
 141         { PIPE_SPOOLSS , SYNT_SPOOLSS_V1 , PIPE_SPOOLSS  , TRANS_SYNT_V2 },
 142         { PIPE_NETDFS  , SYNT_NETDFS_V3  , PIPE_NETDFS   , TRANS_SYNT_V2 },
 143         { NULL         , SYNT_NONE_V0    , NULL          , SYNT_NONE_V0  }
 144 };
 145
 146 /*******************************************************************
 147  Inits an RPC_HDR structure.
 148 ********************************************************************/
 149
 150 void init_rpc_hdr(RPC_HDR *hdr, enum RPC_PKT_TYPE pkt_type, uint8 flags,
 151                                 uint32 call_id, int data_len, int auth_len)
 152 {
 153         hdr->major        = 5;               /* RPC version 5 */
 154         hdr->minor        = 0;               /* minor version 0 */
 155         hdr->pkt_type     = pkt_type;        /* RPC packet type */
 156         hdr->flags        = flags;           /* dce/rpc flags */
 157         hdr->pack_type[0] = 0x10;            /* little-endian data representation */
 158         hdr->pack_type[1] = 0;               /* packed data representation */
 159         hdr->pack_type[2] = 0;               /* packed data representation */
 160         hdr->pack_type[3] = 0;               /* packed data representation */
 161         hdr->frag_len     = data_len;        /* fragment length, fill in later */
 162         hdr->auth_len     = auth_len;        /* authentication length */
 163         hdr->call_id      = call_id;         /* call identifier - match incoming RPC */
 164 }
 165
 166 /*******************************************************************
 167  Reads or writes an RPC_HDR structure.
 168 ********************************************************************/
 169
 170 BOOL smb_io_rpc_hdr(char *desc,  RPC_HDR *rpc, prs_struct *ps, int depth)
 171 {
 172         if (rpc == NULL)
 173                 return False;
 174
 175         prs_debug(ps, depth, desc, "smb_io_rpc_hdr");
 176         depth++;
 177
 178         if(!prs_uint8 ("major     ", ps, depth, &rpc->major))
 179                 return False;
 180
 181         if(!prs_uint8 ("minor     ", ps, depth, &rpc->minor))
 182                 return False;
 183         if(!prs_uint8 ("pkt_type  ", ps, depth, &rpc->pkt_type))
 184                 return False;
 185         if(!prs_uint8 ("flags     ", ps, depth, &rpc->flags))
 186                 return False;
 187
 188         /* We always marshall in little endian format. */
 189         if (MARSHALLING(ps))
 190                 rpc->pack_type[0] = 0x10;
 191
 192         if(!prs_uint8("pack_type0", ps, depth, &rpc->pack_type[0]))
 193                 return False;
 194         if(!prs_uint8("pack_type1", ps, depth, &rpc->pack_type[1]))
 195                 return False;
 196         if(!prs_uint8("pack_type2", ps, depth, &rpc->pack_type[2]))
 197                 return False;
 198         if(!prs_uint8("pack_type3", ps, depth, &rpc->pack_type[3]))
 199                 return False;
 200
 201         /*
 202          * If reading and pack_type[0] == 0 then the data is in big-endian
 203          * format. Set the flag in the prs_struct to specify reverse-endainness.
 204          */
 205
 206         if (UNMARSHALLING(ps) && rpc->pack_type[0] == 0) {
 207                 DEBUG(10,("smb_io_rpc_hdr: PDU data format is big-endian. Setting flag.\n"));
 208                 prs_set_endian_data(ps, RPC_BIG_ENDIAN);
 209         }
 210
 211         if(!prs_uint16("frag_len  ", ps, depth, &rpc->frag_len))
 212                 return False;
 213         if(!prs_uint16("auth_len  ", ps, depth, &rpc->auth_len))
 214                 return False;
 215         if(!prs_uint32("call_id   ", ps, depth, &rpc->call_id))
 216                 return False;
 217         return True;
 218 }
 219
 220 /*******************************************************************
 221  Reads or writes an RPC_IFACE structure.
 222 ********************************************************************/
 223
 224 static BOOL smb_io_rpc_iface(char *desc, RPC_IFACE *ifc, prs_struct *ps, int depth)
 225 {
 226         if (ifc == NULL)
 227                 return False;
 228
 229         prs_debug(ps, depth, desc, "smb_io_rpc_iface");
 230         depth++;
 231
 232         if(!prs_align(ps))
 233                 return False;
 234
 235         if(!prs_uint32 ("data   ", ps, depth, &ifc->uuid.time_low))
 236                 return False;
 237         if(!prs_uint16 ("data   ", ps, depth, &ifc->uuid.time_mid))
 238                 return False;
 239         if(!prs_uint16 ("data   ", ps, depth, &ifc->uuid.time_hi_and_version))
 240                 return False;
 241
 242         if(!prs_uint8s (False, "data   ", ps, depth, ifc->uuid.remaining, sizeof(ifc->uuid.remaining)))
 243                 return False;
 244         if(!prs_uint32 (       "version", ps, depth, &ifc->version))
 245                 return False;
 246
 247         return True;
 248 }
 249
 250 /*******************************************************************
 251  Inits an RPC_ADDR_STR structure.
 252 ********************************************************************/
 253
 254 static void init_rpc_addr_str(RPC_ADDR_STR *str, char *name)
 255 {
 256         str->len = strlen(name) + 1;
 257         fstrcpy(str->str, name);
 258 }
 259
 260 /*******************************************************************
 261  Reads or writes an RPC_ADDR_STR structure.
 262 ********************************************************************/
 263
 264 static BOOL smb_io_rpc_addr_str(char *desc,  RPC_ADDR_STR *str, prs_struct *ps, int depth)
 265 {
 266         if (str == NULL)
 267                 return False;
 268
 269         prs_debug(ps, depth, desc, "smb_io_rpc_addr_str");
 270         depth++;
 271         if(!prs_align(ps))
 272                 return False;
 273
 274         if(!prs_uint16 (      "len", ps, depth, &str->len))
 275                 return False;
 276         if(!prs_uint8s (True, "str", ps, depth, (uchar*)str->str, MIN(str->len, sizeof(str->str)) ))
 277                 return False;
 278         return True;
 279 }
 280
 281 /*******************************************************************
 282  Inits an RPC_HDR_BBA structure.
 283 ********************************************************************/
 284
 285 static void init_rpc_hdr_bba(RPC_HDR_BBA *bba, uint16 max_tsize, uint16 max_rsize, uint32 assoc_gid)
 286 {
 287         bba->max_tsize = max_tsize; /* maximum transmission fragment size (0x1630) */
 288         bba->max_rsize = max_rsize; /* max receive fragment size (0x1630) */
 289         bba->assoc_gid = assoc_gid; /* associated group id (0x0) */
 290 }
 291
 292 /*******************************************************************
 293  Reads or writes an RPC_HDR_BBA structure.
 294 ********************************************************************/
 295
 296 static BOOL smb_io_rpc_hdr_bba(char *desc,  RPC_HDR_BBA *rpc, prs_struct *ps, int depth)
 297 {
 298         if (rpc == NULL)
 299                 return False;
 300
 301         prs_debug(ps, depth, desc, "smb_io_rpc_hdr_bba");
 302         depth++;
 303
 304         if(!prs_uint16("max_tsize", ps, depth, &rpc->max_tsize))
 305                 return False;
 306         if(!prs_uint16("max_rsize", ps, depth, &rpc->max_rsize))
 307                 return False;
 308         if(!prs_uint32("assoc_gid", ps, depth, &rpc->assoc_gid))
 309                 return False;
 310         return True;
 311 }
 312
 313 /*******************************************************************
 314  Inits an RPC_HDR_RB structure.
 315 ********************************************************************/
 316
 317 void init_rpc_hdr_rb(RPC_HDR_RB *rpc,
 318                                 uint16 max_tsize, uint16 max_rsize, uint32 assoc_gid,
 319                                 uint32 num_elements, uint16 context_id, uint8 num_syntaxes,
 320                                 RPC_IFACE *abstract, RPC_IFACE *transfer)
 321 {
 322         init_rpc_hdr_bba(&rpc->bba, max_tsize, max_rsize, assoc_gid);
 323
 324         rpc->num_elements = num_elements ; /* the number of elements (0x1) */
 325         rpc->context_id   = context_id   ; /* presentation context identifier (0x0) */
 326         rpc->num_syntaxes = num_syntaxes ; /* the number of syntaxes (has always been 1?)(0x1) */
 327
 328         /* num and vers. of interface client is using */
 329         rpc->abstract = *abstract;
 330
 331         /* num and vers. of interface to use for replies */
 332         rpc->transfer = *transfer;
 333 }
 334
 335 /*******************************************************************
 336  Reads or writes an RPC_HDR_RB structure.
 337 ********************************************************************/
 338
 339 BOOL smb_io_rpc_hdr_rb(char *desc, RPC_HDR_RB *rpc, prs_struct *ps, int depth)
 340 {
 341         if (rpc == NULL)
 342                 return False;
 343
 344         prs_debug(ps, depth, desc, "smb_io_rpc_hdr_rb");
 345         depth++;
 346
 347         if(!smb_io_rpc_hdr_bba("", &rpc->bba, ps, depth))
 348                 return False;
 349
 350         if(!prs_uint32("num_elements", ps, depth, &rpc->num_elements))
 351                 return False;
 352         if(!prs_uint16("context_id  ", ps, depth, &rpc->context_id ))
 353                 return False;
 354         if(!prs_uint8 ("num_syntaxes", ps, depth, &rpc->num_syntaxes))
 355                 return False;
 356
 357         if(!smb_io_rpc_iface("", &rpc->abstract, ps, depth))
 358                 return False;
 359         if(!smb_io_rpc_iface("", &rpc->transfer, ps, depth))
 360                 return False;
 361
 362         return True;
 363 }
 364
 365 /*******************************************************************
 366  Inits an RPC_RESULTS structure.
 367
 368  lkclXXXX only one reason at the moment!
 369 ********************************************************************/
 370
 371 static void init_rpc_results(RPC_RESULTS *res,
 372                                 uint8 num_results, uint16 result, uint16 reason)
 373 {
 374         res->num_results = num_results; /* the number of results (0x01) */
 375         res->result      = result     ;  /* result (0x00 = accept) */
 376         res->reason      = reason     ;  /* reason (0x00 = no reason specified) */
 377 }
 378
 379 /*******************************************************************
 380  Reads or writes an RPC_RESULTS structure.
 381
 382  lkclXXXX only one reason at the moment!
 383 ********************************************************************/
 384
 385 static BOOL smb_io_rpc_results(char *desc, RPC_RESULTS *res, prs_struct *ps, int depth)
 386 {
 387         if (res == NULL)
 388                 return False;
 389
 390         prs_debug(ps, depth, desc, "smb_io_rpc_results");
 391         depth++;
 392
 393         if(!prs_align(ps))
 394                 return False;
 395
 396         if(!prs_uint8 ("num_results", ps, depth, &res->num_results))
 397                 return False;
 398
 399         if(!prs_align(ps))
 400                 return False;
 401
 402         if(!prs_uint16("result     ", ps, depth, &res->result))
 403                 return False;
 404         if(!prs_uint16("reason     ", ps, depth, &res->reason))
 405                 return False;
 406         return True;
 407 }
 408
 409 /*******************************************************************
 410  Init an RPC_HDR_BA structure.
 411
 412  lkclXXXX only one reason at the moment!
 413
 414 ********************************************************************/
 415
 416 void init_rpc_hdr_ba(RPC_HDR_BA *rpc,
 417                                 uint16 max_tsize, uint16 max_rsize, uint32 assoc_gid,
 418                                 char *pipe_addr,
 419                                 uint8 num_results, uint16 result, uint16 reason,
 420                                 RPC_IFACE *transfer)
 421 {
 422         init_rpc_hdr_bba (&rpc->bba, max_tsize, max_rsize, assoc_gid);
 423         init_rpc_addr_str(&rpc->addr, pipe_addr);
 424         init_rpc_results (&rpc->res, num_results, result, reason);
 425
 426         /* the transfer syntax from the request */
 427         memcpy(&rpc->transfer, transfer, sizeof(rpc->transfer));
 428 }
 429
 430 /*******************************************************************
 431  Reads or writes an RPC_HDR_BA structure.
 432 ********************************************************************/
 433
 434 BOOL smb_io_rpc_hdr_ba(char *desc, RPC_HDR_BA *rpc, prs_struct *ps, int depth)
 435 {
 436         if (rpc == NULL)
 437                 return False;
 438
 439         prs_debug(ps, depth, desc, "smb_io_rpc_hdr_ba");
 440         depth++;
 441
 442         if(!smb_io_rpc_hdr_bba("", &rpc->bba, ps, depth))
 443                 return False;
 444         if(!smb_io_rpc_addr_str("", &rpc->addr, ps, depth))
 445                 return False;
 446         if(!smb_io_rpc_results("", &rpc->res, ps, depth))
 447                 return False;
 448         if(!smb_io_rpc_iface("", &rpc->transfer, ps, depth))
 449                 return False;
 450         return True;
 451 }
 452
 453 /*******************************************************************
 454  Init an RPC_HDR_REQ structure.
 455 ********************************************************************/
 456
 457 void init_rpc_hdr_req(RPC_HDR_REQ *hdr, uint32 alloc_hint, uint16 opnum)
 458 {
 459         hdr->alloc_hint   = alloc_hint; /* allocation hint */
 460         hdr->context_id   = 0;         /* presentation context identifier */
 461         hdr->opnum        = opnum;     /* opnum */
 462 }
 463
 464 /*******************************************************************
 465  Reads or writes an RPC_HDR_REQ structure.
 466 ********************************************************************/
 467
 468 BOOL smb_io_rpc_hdr_req(char *desc, RPC_HDR_REQ *rpc, prs_struct *ps, int depth)
 469 {
 470         if (rpc == NULL)
 471                 return False;
 472
 473         prs_debug(ps, depth, desc, "smb_io_rpc_hdr_req");
 474         depth++;
 475
 476         if(!prs_uint32("alloc_hint", ps, depth, &rpc->alloc_hint))
 477                 return False;
 478         if(!prs_uint16("context_id", ps, depth, &rpc->context_id))
 479                 return False;
 480         if(!prs_uint16("opnum     ", ps, depth, &rpc->opnum))
 481                 return False;
 482         return True;
 483 }
 484
 485 /*******************************************************************
 486  Reads or writes an RPC_HDR_RESP structure.
 487 ********************************************************************/
 488
 489 BOOL smb_io_rpc_hdr_resp(char *desc, RPC_HDR_RESP *rpc, prs_struct *ps, int depth)
 490 {
 491         if (rpc == NULL)
 492                 return False;
 493
 494         prs_debug(ps, depth, desc, "smb_io_rpc_hdr_resp");
 495         depth++;
 496
 497         if(!prs_uint32("alloc_hint", ps, depth, &rpc->alloc_hint))
 498                 return False;
 499         if(!prs_uint16("context_id", ps, depth, &rpc->context_id))
 500                 return False;
 501         if(!prs_uint8 ("cancel_ct ", ps, depth, &rpc->cancel_count))
 502                 return False;
 503         if(!prs_uint8 ("reserved  ", ps, depth, &rpc->reserved))
 504                 return False;
 505         return True;
 506 }
 507
 508 /*******************************************************************
 509  Reads or writes an RPC_HDR_FAULT structure.
 510 ********************************************************************/
 511
 512 BOOL smb_io_rpc_hdr_fault(char *desc, RPC_HDR_FAULT *rpc, prs_struct *ps, int depth)
 513 {
 514         if (rpc == NULL)
 515                 return False;
 516
 517         prs_debug(ps, depth, desc, "smb_io_rpc_hdr_fault");
 518         depth++;
 519
 520         if(!prs_ntstatus("status  ", ps, depth, &rpc->status))
 521                 return False;
 522         if(!prs_uint32("reserved", ps, depth, &rpc->reserved))
 523                 return False;
 524
 525     return True;
 526 }
 527
 528 /*******************************************************************
 529  Init an RPC_HDR_AUTHA structure.
 530 ********************************************************************/
 531
 532 void init_rpc_hdr_autha(RPC_HDR_AUTHA *rai,
 533                                 uint16 max_tsize, uint16 max_rsize,
 534                                 uint8 auth_type, uint8 auth_level,
 535                                 uint8 stub_type_len)
 536 {
 537         rai->max_tsize = max_tsize; /* maximum transmission fragment size (0x1630) */
 538         rai->max_rsize = max_rsize; /* max receive fragment size (0x1630) */
 539
 540         rai->auth_type     = auth_type; /* nt lm ssp 0x0a */
 541         rai->auth_level    = auth_level; /* 0x06 */
 542         rai->stub_type_len = stub_type_len; /* 0x00 */
 543         rai->padding       = 0; /* padding 0x00 */
 544
 545         rai->unknown       = 0x0014a0c0; /* non-zero pointer to something */
 546 }
 547
 548 /*******************************************************************
 549  Reads or writes an RPC_HDR_AUTHA structure.
 550 ********************************************************************/
 551
 552 BOOL smb_io_rpc_hdr_autha(char *desc, RPC_HDR_AUTHA *rai, prs_struct *ps, int depth)
 553 {
 554         if (rai == NULL)
 555                 return False;
 556
 557         prs_debug(ps, depth, desc, "smb_io_rpc_hdr_autha");
 558         depth++;
 559
 560         if(!prs_uint16("max_tsize    ", ps, depth, &rai->max_tsize))
 561                 return False;
 562         if(!prs_uint16("max_rsize    ", ps, depth, &rai->max_rsize))
 563                 return False;
 564
 565         if(!prs_uint8 ("auth_type    ", ps, depth, &rai->auth_type)) /* 0x0a nt lm ssp */
 566                 return False;
 567         if(!prs_uint8 ("auth_level   ", ps, depth, &rai->auth_level)) /* 0x06 */
 568                 return False;
 569         if(!prs_uint8 ("stub_type_len", ps, depth, &rai->stub_type_len))
 570                 return False;
 571         if(!prs_uint8 ("padding      ", ps, depth, &rai->padding))
 572                 return False;
 573
 574         if(!prs_uint32("unknown      ", ps, depth, &rai->unknown)) /* 0x0014a0c0 */
 575                 return False;
 576
 577         return True;
 578 }
 579
 580 /*******************************************************************
 581  Checks an RPC_HDR_AUTH structure.
 582 ********************************************************************/
 583
 584 BOOL rpc_hdr_auth_chk(RPC_HDR_AUTH *rai)
 585 {
 586         return (rai->auth_type == NTLMSSP_AUTH_TYPE && rai->auth_level == NTLMSSP_AUTH_LEVEL);
 587 }
 588
 589 /*******************************************************************
 590  Inits an RPC_HDR_AUTH structure.
 591 ********************************************************************/
 592
 593 void init_rpc_hdr_auth(RPC_HDR_AUTH *rai,
 594                                 uint8 auth_type, uint8 auth_level,
 595                                 uint8 stub_type_len,
 596                                 uint32 ptr)
 597 {
 598         rai->auth_type     = auth_type; /* nt lm ssp 0x0a */
 599         rai->auth_level    = auth_level; /* 0x06 */
 600         rai->stub_type_len = stub_type_len; /* 0x00 */
 601         rai->padding       = 0; /* padding 0x00 */
 602
 603         rai->unknown       = ptr; /* non-zero pointer to something */
 604 }
 605
 606 /*******************************************************************
 607  Reads or writes an RPC_HDR_AUTH structure.
 608 ********************************************************************/
 609
 610 BOOL smb_io_rpc_hdr_auth(char *desc, RPC_HDR_AUTH *rai, prs_struct *ps, int depth)
 611 {
 612         if (rai == NULL)
 613                 return False;
 614
 615         prs_debug(ps, depth, desc, "smb_io_rpc_hdr_auth");
 616         depth++;
 617
 618         if(!prs_align(ps))
 619                 return False;
 620
 621         if(!prs_uint8 ("auth_type    ", ps, depth, &rai->auth_type)) /* 0x0a nt lm ssp */
 622                 return False;
 623         if(!prs_uint8 ("auth_level   ", ps, depth, &rai->auth_level)) /* 0x06 */
 624                 return False;
 625         if(!prs_uint8 ("stub_type_len", ps, depth, &rai->stub_type_len))
 626                 return False;
 627         if(!prs_uint8 ("padding      ", ps, depth, &rai->padding))
 628                 return False;
 629
 630         if(!prs_uint32("unknown      ", ps, depth, &rai->unknown)) /* 0x0014a0c0 */
 631                 return False;
 632
 633         return True;
 634 }
 635
 636 /*******************************************************************
 637  Checks an RPC_AUTH_VERIFIER structure.
 638 ********************************************************************/
 639
 640 BOOL rpc_auth_verifier_chk(RPC_AUTH_VERIFIER *rav,
 641                                 char *signature, uint32 msg_type)
 642 {
 643         return (strequal(rav->signature, signature) && rav->msg_type == msg_type);
 644 }
 645
 646 /*******************************************************************
 647  Inits an RPC_AUTH_VERIFIER structure.
 648 ********************************************************************/
 649
 650 void init_rpc_auth_verifier(RPC_AUTH_VERIFIER *rav,
 651                                 char *signature, uint32 msg_type)
 652 {
 653         fstrcpy(rav->signature, signature); /* "NTLMSSP" */
 654         rav->msg_type = msg_type; /* NTLMSSP_MESSAGE_TYPE */
 655 }
 656
 657 /*******************************************************************
 658  Reads or writes an RPC_AUTH_VERIFIER structure.
 659 ********************************************************************/
 660
 661 BOOL smb_io_rpc_auth_verifier(char *desc, RPC_AUTH_VERIFIER *rav, prs_struct *ps, int depth)
 662 {
 663         if (rav == NULL)
 664                 return False;
 665
 666         prs_debug(ps, depth, desc, "smb_io_rpc_auth_verifier");
 667         depth++;
 668
 669         /* "NTLMSSP" */
 670         if(!prs_string("signature", ps, depth, rav->signature, strlen("NTLMSSP"),
 671                         sizeof(rav->signature)))
 672                 return False;
 673         if(!prs_uint32("msg_type ", ps, depth, &rav->msg_type)) /* NTLMSSP_MESSAGE_TYPE */
 674                 return False;
 675
 676         return True;
 677 }
 678
 679 /*******************************************************************
 680  Inits an RPC_AUTH_NTLMSSP_NEG structure.
 681 ********************************************************************/
 682
 683 void init_rpc_auth_ntlmssp_neg(RPC_AUTH_NTLMSSP_NEG *neg,
 684                                 uint32 neg_flgs,
 685                                 fstring myname, fstring domain)
 686 {
 687         int len_myname = strlen(myname);
 688         int len_domain = strlen(domain);
 689
 690         neg->neg_flgs = neg_flgs ; /* 0x00b2b3 */
 691
 692         init_str_hdr(&neg->hdr_domain, len_domain, len_domain, 0x20 + len_myname);
 693         init_str_hdr(&neg->hdr_myname, len_myname, len_myname, 0x20);
 694
 695         fstrcpy(neg->myname, myname);
 696         fstrcpy(neg->domain, domain);
 697 }
 698
 699 /*******************************************************************
 700  Reads or writes an RPC_AUTH_NTLMSSP_NEG structure.
 701
 702  *** lkclXXXX HACK ALERT! ***
 703 ********************************************************************/
 704
 705 BOOL smb_io_rpc_auth_ntlmssp_neg(char *desc, RPC_AUTH_NTLMSSP_NEG *neg, prs_struct *ps, int depth)
 706 {
 707         uint32 start_offset = prs_offset(ps);
 708         if (neg == NULL)
 709                 return False;
 710
 711         prs_debug(ps, depth, desc, "smb_io_rpc_auth_ntlmssp_neg");
 712         depth++;
 713
 714         if(!prs_uint32("neg_flgs ", ps, depth, &neg->neg_flgs))
 715                 return False;
 716
 717         if (ps->io) {
 718                 uint32 old_offset;
 719                 uint32 old_neg_flags = neg->neg_flgs;
 720
 721                 /* reading */
 722
 723                 ZERO_STRUCTP(neg);
 724
 725                 neg->neg_flgs = old_neg_flags;
 726
 727                 if(!smb_io_strhdr("hdr_domain", &neg->hdr_domain, ps, depth))
 728                         return False;
 729                 if(!smb_io_strhdr("hdr_myname", &neg->hdr_myname, ps, depth))
 730                         return False;
 731
 732                 old_offset = prs_offset(ps);
 733
 734                 if(!prs_set_offset(ps, neg->hdr_myname.buffer + start_offset - 12))
 735                         return False;
 736
 737                 if(!prs_uint8s(True, "myname", ps, depth, (uint8*)neg->myname,
 738                                 MIN(neg->hdr_myname.str_str_len, sizeof(neg->myname))))
 739                         return False;
 740
 741                 old_offset += neg->hdr_myname.str_str_len;
 742
 743                 if(!prs_set_offset(ps, neg->hdr_domain.buffer + start_offset - 12))
 744                         return False;
 745
 746                 if(!prs_uint8s(True, "domain", ps, depth, (uint8*)neg->domain,
 747                         MIN(neg->hdr_domain.str_str_len, sizeof(neg->domain  ))))
 748                         return False;
 749
 750                 old_offset += neg->hdr_domain  .str_str_len;
 751
 752                 if(!prs_set_offset(ps, old_offset))
 753                         return False;
 754         } else {
 755                 /* writing */
 756                 if(!smb_io_strhdr("hdr_domain", &neg->hdr_domain, ps, depth))
 757                         return False;
 758                 if(!smb_io_strhdr("hdr_myname", &neg->hdr_myname, ps, depth))
 759                         return False;
 760
 761                 if(!prs_uint8s(True, "myname", ps, depth, (uint8*)neg->myname,
 762                                         MIN(neg->hdr_myname.str_str_len, sizeof(neg->myname))))
 763                         return False;
 764                 if(!prs_uint8s(True, "domain", ps, depth, (uint8*)neg->domain,
 765                                         MIN(neg->hdr_domain.str_str_len, sizeof(neg->domain  ))))
 766                         return False;
 767         }
 768
 769         return True;
 770 }
 771
 772 /*******************************************************************
 773 creates an RPC_AUTH_NTLMSSP_CHAL structure.
 774 ********************************************************************/
 775
 776 void init_rpc_auth_ntlmssp_chal(RPC_AUTH_NTLMSSP_CHAL *chl,
 777                                 uint32 neg_flags,
 778                                 uint8 challenge[8])
 779 {
 780         chl->unknown_1 = 0x0;
 781         chl->unknown_2 = 0x00000028;
 782         chl->neg_flags = neg_flags; /* 0x0082b1 */
 783
 784         memcpy(chl->challenge, challenge, sizeof(chl->challenge));
 785         memset((char *)chl->reserved , '\0', sizeof(chl->reserved));
 786 }
 787
 788 /*******************************************************************
 789  Reads or writes an RPC_AUTH_NTLMSSP_CHAL structure.
 790 ********************************************************************/
 791
 792 BOOL smb_io_rpc_auth_ntlmssp_chal(char *desc, RPC_AUTH_NTLMSSP_CHAL *chl, prs_struct *ps, int depth)
 793 {
 794         if (chl == NULL)
 795                 return False;
 796
 797         prs_debug(ps, depth, desc, "smb_io_rpc_auth_ntlmssp_chal");
 798         depth++;
 799
 800         if(!prs_uint32("unknown_1", ps, depth, &chl->unknown_1)) /* 0x0000 0000 */
 801                 return False;
 802         if(!prs_uint32("unknown_2", ps, depth, &chl->unknown_2)) /* 0x0000 b2b3 */
 803                 return False;
 804         if(!prs_uint32("neg_flags", ps, depth, &chl->neg_flags)) /* 0x0000 82b1 */
 805                 return False;
 806
 807         if(!prs_uint8s (False, "challenge", ps, depth, chl->challenge, sizeof(chl->challenge)))
 808                 return False;
 809         if(!prs_uint8s (False, "reserved ", ps, depth, chl->reserved , sizeof(chl->reserved )))
 810                 return False;
 811
 812         return True;
 813 }
 814
 815 /*******************************************************************
 816  Inits an RPC_AUTH_NTLMSSP_RESP structure.
 817
 818  *** lkclXXXX FUDGE!  HAVE TO MANUALLY SPECIFY OFFSET HERE (0x1c bytes) ***
 819  *** lkclXXXX the actual offset is at the start of the auth verifier    ***
 820 ********************************************************************/
 821
 822 void init_rpc_auth_ntlmssp_resp(RPC_AUTH_NTLMSSP_RESP *rsp,
 823                                 uchar lm_resp[24], uchar nt_resp[24],
 824                                 char *domain, char *user, char *wks,
 825                                 uint32 neg_flags)
 826 {
 827         uint32 offset;
 828         int dom_len = strlen(domain);
 829         int wks_len = strlen(wks);
 830         int usr_len = strlen(user);
 831         int lm_len  = (lm_resp != NULL) ? 24 : 0;
 832         int nt_len  = (nt_resp != NULL) ? 24 : 0;
 833
 834         DEBUG(5,("make_rpc_auth_ntlmssp_resp\n"));
 835
 836 #ifdef DEBUG_PASSWORD
 837         DEBUG(100,("lm_resp\n"));
 838         dump_data(100, (char *)lm_resp, 24);
 839         DEBUG(100,("nt_resp\n"));
 840         dump_data(100, (char *)nt_resp, 24);
 841 #endif
 842
 843         DEBUG(6,("dom: %s user: %s wks: %s neg_flgs: 0x%x\n",
 844                   domain, user, wks, neg_flags));
 845
 846         offset = 0x40;
 847
 848         if (neg_flags & NTLMSSP_NEGOTIATE_UNICODE) {
 849                 dom_len *= 2;
 850                 wks_len *= 2;
 851                 usr_len *= 2;
 852         }
 853
 854         init_str_hdr(&rsp->hdr_domain, dom_len, dom_len, offset);
 855         offset += dom_len;
 856
 857         init_str_hdr(&rsp->hdr_usr, usr_len, usr_len, offset);
 858         offset += usr_len;
 859
 860         init_str_hdr(&rsp->hdr_wks, wks_len, wks_len, offset);
 861         offset += wks_len;
 862
 863         init_str_hdr(&rsp->hdr_lm_resp, lm_len, lm_len, offset);
 864         offset += lm_len;
 865
 866         init_str_hdr(&rsp->hdr_nt_resp, nt_len, nt_len, offset);
 867         offset += nt_len;
 868
 869         init_str_hdr(&rsp->hdr_sess_key, 0, 0, offset);
 870
 871         rsp->neg_flags = neg_flags;
 872
 873         memcpy(rsp->lm_resp, lm_resp, 24);
 874         memcpy(rsp->nt_resp, nt_resp, 24);
 875
 876         if (neg_flags & NTLMSSP_NEGOTIATE_UNICODE) {
 877                 rpcstr_push(rsp->domain, domain, sizeof(rsp->domain), 0);
 878                 rpcstr_push(rsp->user, user, sizeof(rsp->user), 0);
 879                 rpcstr_push(rsp->wks, wks, sizeof(rsp->wks), 0);
 880         } else {
 881                 fstrcpy(rsp->domain, domain);
 882                 fstrcpy(rsp->user, user);
 883                 fstrcpy(rsp->wks, wks);
 884         }
 885
 886         rsp->sess_key[0] = 0;
 887 }
 888
 889 /*******************************************************************
 890  Reads or writes an RPC_AUTH_NTLMSSP_RESP structure.
 891
 892  *** lkclXXXX FUDGE!  HAVE TO MANUALLY SPECIFY OFFSET HERE (0x1c bytes) ***
 893  *** lkclXXXX the actual offset is at the start of the auth verifier    ***
 894 ********************************************************************/
 895
 896 BOOL smb_io_rpc_auth_ntlmssp_resp(char *desc, RPC_AUTH_NTLMSSP_RESP *rsp, prs_struct *ps, int depth)
 897 {
 898         if (rsp == NULL)
 899                 return False;
 900
 901         prs_debug(ps, depth, desc, "smb_io_rpc_auth_ntlmssp_resp");
 902         depth++;
 903
 904         if (ps->io) {
 905                 uint32 old_offset;
 906
 907                 /* reading */
 908
 909                 ZERO_STRUCTP(rsp);
 910
 911                 if(!smb_io_strhdr("hdr_lm_resp ", &rsp->hdr_lm_resp, ps, depth))
 912                         return False;
 913                 if(!smb_io_strhdr("hdr_nt_resp ", &rsp->hdr_nt_resp, ps, depth))
 914                         return False;
 915                 if(!smb_io_strhdr("hdr_domain  ", &rsp->hdr_domain, ps, depth))
 916                         return False;
 917                 if(!smb_io_strhdr("hdr_user    ", &rsp->hdr_usr, ps, depth))
 918                         return False;
 919                 if(!smb_io_strhdr("hdr_wks     ", &rsp->hdr_wks, ps, depth))
 920                         return False;
 921                 if(!smb_io_strhdr("hdr_sess_key", &rsp->hdr_sess_key, ps, depth))
 922                         return False;
 923
 924                 if(!prs_uint32("neg_flags", ps, depth, &rsp->neg_flags)) /* 0x0000 82b1 */
 925                         return False;
 926
 927                 old_offset = prs_offset(ps);
 928
 929                 if(!prs_set_offset(ps, rsp->hdr_domain.buffer + 0xc))
 930                         return False;
 931
 932                 if(!prs_uint8s(True , "domain  ", ps, depth, (uint8*)rsp->domain,
 933                                 MIN(rsp->hdr_domain.str_str_len, sizeof(rsp->domain))))
 934                         return False;
 935
 936                 old_offset += rsp->hdr_domain.str_str_len;
 937
 938                 if(!prs_set_offset(ps, rsp->hdr_usr.buffer + 0xc))
 939                         return False;
 940
 941                 if(!prs_uint8s(True , "user    ", ps, depth, (uint8*)rsp->user,
 942                                 MIN(rsp->hdr_usr.str_str_len, sizeof(rsp->user))))
 943                         return False;
 944
 945                 old_offset += rsp->hdr_usr.str_str_len;
 946
 947                 if(!prs_set_offset(ps, rsp->hdr_wks.buffer + 0xc))
 948                         return False;
 949
 950                 if(!prs_uint8s(True, "wks     ", ps, depth, (uint8*)rsp->wks,
 951                                 MIN(rsp->hdr_wks.str_str_len, sizeof(rsp->wks))))
 952                         return False;
 953
 954                 old_offset += rsp->hdr_wks.str_str_len;
 955
 956                 if(!prs_set_offset(ps, rsp->hdr_lm_resp.buffer + 0xc))
 957                         return False;
 958
 959                 if(!prs_uint8s(False, "lm_resp ", ps, depth, (uint8*)rsp->lm_resp,
 960                                 MIN(rsp->hdr_lm_resp.str_str_len, sizeof(rsp->lm_resp ))))
 961                         return False;
 962
 963                 old_offset += rsp->hdr_lm_resp.str_str_len;
 964
 965                 if(!prs_set_offset(ps, rsp->hdr_nt_resp.buffer + 0xc))
 966                         return False;
 967
 968                 if(!prs_uint8s(False, "nt_resp ", ps, depth, (uint8*)rsp->nt_resp,
 969                                 MIN(rsp->hdr_nt_resp.str_str_len, sizeof(rsp->nt_resp ))))
 970                         return False;
 971
 972                 old_offset += rsp->hdr_nt_resp.str_str_len;
 973
 974                 if (rsp->hdr_sess_key.str_str_len != 0) {
 975
 976                         if(!prs_set_offset(ps, rsp->hdr_sess_key.buffer + 0x10))
 977                                 return False;
 978
 979                         old_offset += rsp->hdr_sess_key.str_str_len;
 980
 981                         if(!prs_uint8s(False, "sess_key", ps, depth, (uint8*)rsp->sess_key,
 982                                         MIN(rsp->hdr_sess_key.str_str_len, sizeof(rsp->sess_key))))
 983                                 return False;
 984                 }
 985
 986                 if(!prs_set_offset(ps, old_offset))
 987                         return False;
 988         } else {
 989                 /* writing */
 990                 if(!smb_io_strhdr("hdr_lm_resp ", &rsp->hdr_lm_resp, ps, depth))
 991                         return False;
 992                 if(!smb_io_strhdr("hdr_nt_resp ", &rsp->hdr_nt_resp, ps, depth))
 993                         return False;
 994                 if(!smb_io_strhdr("hdr_domain  ", &rsp->hdr_domain, ps, depth))
 995                         return False;
 996                 if(!smb_io_strhdr("hdr_user    ", &rsp->hdr_usr, ps, depth))
 997                         return False;
 998                 if(!smb_io_strhdr("hdr_wks     ", &rsp->hdr_wks, ps, depth))
 999                         return False;
1000                 if(!smb_io_strhdr("hdr_sess_key", &rsp->hdr_sess_key, ps, depth))
1001                         return False;
1002
1003                 if(!prs_uint32("neg_flags", ps, depth, &rsp->neg_flags)) /* 0x0000 82b1 */
1004                         return False;
1005
1006                 if(!prs_uint8s(True , "domain  ", ps, depth, (uint8*)rsp->domain,
1007                                 MIN(rsp->hdr_domain.str_str_len, sizeof(rsp->domain))))
1008                         return False;
1009
1010                 if(!prs_uint8s(True , "user    ", ps, depth, (uint8*)rsp->user,
1011                                 MIN(rsp->hdr_usr.str_str_len, sizeof(rsp->user))))
1012                         return False;
1013
1014                 if(!prs_uint8s(True , "wks     ", ps, depth, (uint8*)rsp->wks,
1015                                 MIN(rsp->hdr_wks.str_str_len, sizeof(rsp->wks))))
1016                         return False;
1017                 if(!prs_uint8s(False, "lm_resp ", ps, depth, (uint8*)rsp->lm_resp,
1018                                 MIN(rsp->hdr_lm_resp .str_str_len, sizeof(rsp->lm_resp))))
1019                         return False;
1020                 if(!prs_uint8s(False, "nt_resp ", ps, depth, (uint8*)rsp->nt_resp,
1021                                 MIN(rsp->hdr_nt_resp .str_str_len, sizeof(rsp->nt_resp ))))
1022                         return False;
1023                 if(!prs_uint8s(False, "sess_key", ps, depth, (uint8*)rsp->sess_key,
1024                                 MIN(rsp->hdr_sess_key.str_str_len, sizeof(rsp->sess_key))))
1025                         return False;
1026         }
1027
1028         return True;
1029 }
1030
1031 /*******************************************************************
1032  Checks an RPC_AUTH_NTLMSSP_CHK structure.
1033 ********************************************************************/
1034
1035 BOOL rpc_auth_ntlmssp_chk(RPC_AUTH_NTLMSSP_CHK *chk, uint32 crc32, uint32 seq_num)
1036 {
1037         if (chk == NULL)
1038                 return False;
1039
1040         if (chk->crc32 != crc32 ||
1041             chk->ver   != NTLMSSP_SIGN_VERSION ||
1042             chk->seq_num != seq_num)
1043         {
1044                 DEBUG(5,("verify failed - crc %x ver %x seq %d\n",
1045                         crc32, NTLMSSP_SIGN_VERSION, seq_num));
1046                 DEBUG(5,("verify expect - crc %x ver %x seq %d\n",
1047                         chk->crc32, chk->ver, chk->seq_num));
1048                 return False;
1049         }
1050         return True;
1051 }
1052
1053 /*******************************************************************
1054  Inits an RPC_AUTH_NTLMSSP_CHK structure.
1055 ********************************************************************/
1056
1057 void init_rpc_auth_ntlmssp_chk(RPC_AUTH_NTLMSSP_CHK *chk,
1058                                 uint32 ver, uint32 crc32, uint32 seq_num)
1059 {
1060         chk->ver      = ver;
1061         chk->reserved = 0x0;
1062         chk->crc32    = crc32;
1063         chk->seq_num  = seq_num;
1064 }
1065
1066 /*******************************************************************
1067  Reads or writes an RPC_AUTH_NTLMSSP_CHK structure.
1068 ********************************************************************/
1069
1070 BOOL smb_io_rpc_auth_ntlmssp_chk(char *desc, RPC_AUTH_NTLMSSP_CHK *chk, prs_struct *ps, int depth)
1071 {
1072         if (chk == NULL)
1073                 return False;
1074
1075         prs_debug(ps, depth, desc, "smb_io_rpc_auth_ntlmssp_chk");
1076         depth++;
1077
1078         if(!prs_align(ps))
1079                 return False;
1080
1081         if(!prs_uint32("ver     ", ps, depth, &chk->ver))
1082                 return False;
1083         if(!prs_uint32("reserved", ps, depth, &chk->reserved))
1084                 return False;
1085         if(!prs_uint32("crc32   ", ps, depth, &chk->crc32))
1086                 return False;
1087         if(!prs_uint32("seq_num ", ps, depth, &chk->seq_num))
1088                 return False;
1089
1090         return True;
1091 }