source/include/rpc_dce.h

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 1.9.
   4    SMB parameters and setup
   5    Copyright (C) Andrew Tridgell 1992-1997
   6    Copyright (C) Luke Kenneth Casson Leighton 1996-1997
   7    Copyright (C) Paul Ashton 1997
   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 #ifndef _DCE_RPC_H /* _DCE_RPC_H */
  25 #define _DCE_RPC_H
  26
  27 #include "rpc_misc.h"  /* this only pulls in STRHDR */
  28
  29
  30 /* DCE/RPC packet types */
  31
  32 enum RPC_PKT_TYPE
  33 {
  34         RPC_REQUEST = 0x00,
  35         RPC_RESPONSE = 0x02,
  36         RPC_FAULT    = 0x03,
  37         RPC_BIND     = 0x0B,
  38         RPC_BINDACK  = 0x0C,
  39         RPC_BINDNACK = 0x0D,
  40         RPC_ALTCONT  = 0x0E,
  41         RPC_ALTCONTRESP = 0x0F,
  42         RPC_BINDRESP = 0x10 /* not the real name!  this is undocumented! */
  43 };
  44
  45 /* DCE/RPC flags */
  46 #define RPC_FLG_FIRST 0x01
  47 #define RPC_FLG_LAST  0x02
  48 #define RPC_FLG_NOCALL 0x20
  49
  50 /* NTLMSSP message types */
  51 enum NTLM_MESSAGE_TYPE
  52 {
  53         NTLMSSP_NEGOTIATE = 1,
  54         NTLMSSP_CHALLENGE = 2,
  55         NTLMSSP_AUTH      = 3,
  56         NTLMSSP_UNKNOWN   = 4
  57 };
  58
  59 /* NTLMSSP negotiation flags */
  60 #define NTLMSSP_NEGOTIATE_UNICODE          0x00000001
  61 #define NTLMSSP_NEGOTIATE_OEM              0x00000002
  62 #define NTLMSSP_REQUEST_TARGET             0x00000004
  63 #define NTLMSSP_NEGOTIATE_SIGN             0x00000010
  64 #define NTLMSSP_NEGOTIATE_SEAL             0x00000020
  65 #define NTLMSSP_NEGOTIATE_LM_KEY           0x00000080
  66 #define NTLMSSP_NEGOTIATE_NTLM             0x00000200
  67 #define NTLMSSP_NEGOTIATE_00001000         0x00001000
  68 #define NTLMSSP_NEGOTIATE_00002000         0x00002000
  69 #define NTLMSSP_NEGOTIATE_ALWAYS_SIGN      0x00008000
  70 #define NTLMSSP_NEGOTIATE_NTLM2            0x00080000
  71 #define NTLMSSP_NEGOTIATE_TARGET_INFO      0x00800000
  72 #define NTLMSSP_NEGOTIATE_128              0x20000000
  73 #define NTLMSSP_NEGOTIATE_KEY_EXCH         0x40000000
  74
  75 #define SMBD_NTLMSSP_NEG_FLAGS 0x000082b1
  76
  77 /* NTLMSSP signature version */
  78 #define NTLMSSP_SIGN_VERSION 0x01
  79
  80 /* NTLMSSP auth type and level. */
  81 #define NTLMSSP_AUTH_TYPE 0xa
  82 #define NTLMSSP_AUTH_LEVEL 0x6
  83
  84 /* Maximum PDU fragment size. */
  85 #define MAX_PDU_FRAG_LEN 0x1630
  86
  87 /*
  88  * Actual structure of a DCE UUID
  89  */
  90
  91 typedef struct rpc_uuid
  92 {
  93   uint32 time_low;
  94   uint16 time_mid;
  95   uint16 time_hi_and_version;
  96   uint8 remaining[8];
  97 } RPC_UUID;
  98
  99 #define RPC_UUID_LEN 16
 100
 101 /* RPC_IFACE */
 102 typedef struct rpc_iface_info
 103 {
 104   RPC_UUID uuid;    /* 16 bytes of rpc interface identification */
 105   uint32 version;    /* the interface version number */
 106
 107 } RPC_IFACE;
 108
 109 #define RPC_IFACE_LEN (RPC_UUID_LEN + 4)
 110
 111 struct pipe_id_info
 112 {
 113         /* the names appear not to matter: the syntaxes _do_ matter */
 114
 115         char *client_pipe;
 116         RPC_IFACE abstr_syntax; /* this one is the abstract syntax id */
 117
 118         char *server_pipe;  /* this one is the secondary syntax name */
 119         RPC_IFACE trans_syntax; /* this one is the primary syntax id */
 120 };
 121
 122 /* RPC_HDR - dce rpc header */
 123 typedef struct rpc_hdr_info
 124 {
 125   uint8  major; /* 5 - RPC major version */
 126   uint8  minor; /* 0 - RPC minor version */
 127   uint8  pkt_type; /* RPC_PKT_TYPE - RPC response packet */
 128   uint8  flags; /* DCE/RPC flags */
 129   uint8  pack_type[4]; /* 0x1000 0000 - little-endian packed data representation */
 130   uint16 frag_len; /* fragment length - data size (bytes) inc header and tail. */
 131   uint16 auth_len; /* 0 - authentication length  */
 132   uint32 call_id; /* call identifier.  matches 12th uint32 of incoming RPC data. */
 133
 134 } RPC_HDR;
 135
 136 #define RPC_HEADER_LEN 16
 137
 138 /* RPC_HDR_REQ - ms request rpc header */
 139 typedef struct rpc_hdr_req_info
 140 {
 141   uint32 alloc_hint;   /* allocation hint - data size (bytes) minus header and tail. */
 142   uint16 context_id;   /* 0 - presentation context identifier */
 143   uint16  opnum;        /* opnum */
 144
 145 } RPC_HDR_REQ;
 146
 147 #define RPC_HDR_REQ_LEN 8
 148
 149 /* RPC_HDR_RESP - ms response rpc header */
 150 typedef struct rpc_hdr_resp_info
 151 {
 152   uint32 alloc_hint;   /* allocation hint - data size (bytes) minus header and tail. */
 153   uint16 context_id;   /* 0 - presentation context identifier */
 154   uint8  cancel_count; /* 0 - cancel count */
 155   uint8  reserved;     /* 0 - reserved. */
 156
 157 } RPC_HDR_RESP;
 158
 159 #define RPC_HDR_RESP_LEN 8
 160
 161 /* RPC_HDR_FAULT - fault rpc header */
 162 typedef struct rpc_hdr_fault_info
 163 {
 164   uint32 status;
 165   uint32 reserved; /* 0x0000 0000 */
 166 } RPC_HDR_FAULT;
 167
 168 #define RPC_HDR_FAULT_LEN 8
 169
 170 /* this seems to be the same string name depending on the name of the pipe,
 171  * but is more likely to be linked to the interface name
 172  * "srvsvc", "\\PIPE\\ntsvcs"
 173  * "samr", "\\PIPE\\lsass"
 174  * "wkssvc", "\\PIPE\\wksvcs"
 175  * "NETLOGON", "\\PIPE\\NETLOGON"
 176  */
 177 /* RPC_ADDR_STR */
 178 typedef struct rpc_addr_info
 179 {
 180   uint16 len;   /* length of the string including null terminator */
 181   fstring str; /* the string above in single byte, null terminated form */
 182
 183 } RPC_ADDR_STR;
 184
 185 /* RPC_HDR_BBA */
 186 typedef struct rpc_hdr_bba_info
 187 {
 188   uint16 max_tsize;       /* maximum transmission fragment size (0x1630) */
 189   uint16 max_rsize;       /* max receive fragment size (0x1630) */
 190   uint32 assoc_gid;       /* associated group id (0x0) */
 191
 192 } RPC_HDR_BBA;
 193
 194 #define RPC_HDR_BBA_LEN 8
 195
 196 /* RPC_HDR_AUTHA */
 197 typedef struct rpc_hdr_autha_info
 198 {
 199         uint16 max_tsize;       /* maximum transmission fragment size (0x1630) */
 200         uint16 max_rsize;       /* max receive fragment size (0x1630) */
 201
 202         uint8 auth_type; /* 0x0a */
 203         uint8 auth_level; /* 0x06 */
 204         uint8 stub_type_len; /* don't know */
 205         uint8 padding; /* padding */
 206
 207         uint32 unknown; /* 0x0014a0c0 */
 208
 209 } RPC_HDR_AUTHA;
 210
 211 #define RPC_HDR_AUTHA_LEN 12
 212
 213 /* RPC_HDR_AUTH */
 214 typedef struct rpc_hdr_auth_info
 215 {
 216         uint8 auth_type; /* 0x0a */
 217         uint8 auth_level; /* 0x06 */
 218         uint8 stub_type_len; /* don't know */
 219         uint8 padding; /* padding */
 220
 221         uint32 unknown; /* pointer */
 222
 223 } RPC_HDR_AUTH;
 224
 225 #define RPC_HDR_AUTH_LEN 8
 226
 227 /* RPC_BIND_REQ - ms req bind */
 228 typedef struct rpc_bind_req_info
 229 {
 230   RPC_HDR_BBA bba;
 231
 232   uint32 num_elements;    /* the number of elements (0x1) */
 233   uint16 context_id;      /* presentation context identifier (0x0) */
 234   uint8 num_syntaxes;     /* the number of syntaxes (has always been 1?)(0x1) */
 235
 236   RPC_IFACE abstract;     /* num and vers. of interface client is using */
 237   RPC_IFACE transfer;     /* num and vers. of interface to use for replies */
 238
 239 } RPC_HDR_RB;
 240
 241 /*
 242  * The following length is 8 bytes RPC_HDR_BBA_LEN, 8 bytes internals
 243  * (with 3 bytes padding), + 2 x RPC_IFACE_LEN bytes for RPC_IFACE structs.
 244  */
 245
 246 #define RPC_HDR_RB_LEN (RPC_HDR_BBA_LEN + 8 + (2*RPC_IFACE_LEN))
 247
 248 /* RPC_RESULTS - can only cope with one reason, right now... */
 249 typedef struct rpc_results_info
 250 {
 251 /* uint8[] # 4-byte alignment padding, against SMB header */
 252
 253   uint8 num_results; /* the number of results (0x01) */
 254
 255 /* uint8[] # 4-byte alignment padding, against SMB header */
 256
 257   uint16 result; /* result (0x00 = accept) */
 258   uint16 reason; /* reason (0x00 = no reason specified) */
 259
 260 } RPC_RESULTS;
 261
 262 /* RPC_HDR_BA */
 263 typedef struct rpc_hdr_ba_info
 264 {
 265   RPC_HDR_BBA bba;
 266
 267   RPC_ADDR_STR addr    ;  /* the secondary address string, as described earlier */
 268   RPC_RESULTS  res     ; /* results and reasons */
 269   RPC_IFACE    transfer; /* the transfer syntax from the request */
 270
 271 } RPC_HDR_BA;
 272
 273 /* RPC_AUTH_VERIFIER */
 274 typedef struct rpc_auth_verif_info
 275 {
 276         fstring signature; /* "NTLMSSP" */
 277         uint32  msg_type; /* NTLMSSP_MESSAGE_TYPE (1,2,3) */
 278
 279 } RPC_AUTH_VERIFIER;
 280
 281 /* this is TEMPORARILY coded up as a specific structure */
 282 /* this structure comes after the bind request */
 283 /* RPC_AUTH_NTLMSSP_NEG */
 284 typedef struct rpc_auth_ntlmssp_neg_info
 285 {
 286         uint32  neg_flgs; /* 0x0000 b2b3 */
 287
 288         STRHDR hdr_myname; /* offset is against START of this structure */
 289         STRHDR hdr_domain; /* offset is against START of this structure */
 290
 291         fstring myname; /* calling workstation's name */
 292         fstring domain; /* calling workstations's domain */
 293
 294 } RPC_AUTH_NTLMSSP_NEG;
 295
 296 /* this is TEMPORARILY coded up as a specific structure */
 297 /* this structure comes after the bind acknowledgement */
 298 /* RPC_AUTH_NTLMSSP_CHAL */
 299 typedef struct rpc_auth_ntlmssp_chal_info
 300 {
 301         uint32 unknown_1; /* 0x0000 0000 */
 302         uint32 unknown_2; /* 0x0000 0028 */
 303         uint32 neg_flags; /* 0x0000 82b1 */
 304
 305         uint8 challenge[8]; /* ntlm challenge */
 306         uint8 reserved [8]; /* zeros */
 307
 308 } RPC_AUTH_NTLMSSP_CHAL;
 309
 310
 311 /* RPC_AUTH_NTLMSSP_RESP */
 312 typedef struct rpc_auth_ntlmssp_resp_info
 313 {
 314         STRHDR hdr_lm_resp; /* 24 byte response */
 315         STRHDR hdr_nt_resp; /* 24 byte response */
 316         STRHDR hdr_domain;
 317         STRHDR hdr_usr;
 318         STRHDR hdr_wks;
 319         STRHDR hdr_sess_key; /* NULL unless negotiated */
 320         uint32 neg_flags; /* 0x0000 82b1 */
 321
 322         fstring sess_key;
 323         fstring wks;
 324         fstring user;
 325         fstring domain;
 326         fstring nt_resp;
 327         fstring lm_resp;
 328
 329 } RPC_AUTH_NTLMSSP_RESP;
 330
 331 /* attached to the end of encrypted rpc requests and responses */
 332 /* RPC_AUTH_NTLMSSP_CHK */
 333 typedef struct rpc_auth_ntlmssp_chk_info
 334 {
 335         uint32 ver; /* 0x0000 0001 */
 336         uint32 reserved;
 337         uint32 crc32; /* checksum using 0xEDB8 8320 as a polynomial */
 338         uint32 seq_num;
 339
 340 } RPC_AUTH_NTLMSSP_CHK;
 341
 342 #define RPC_AUTH_NTLMSSP_CHK_LEN 16
 343
 344
 345 #endif /* _DCE_RPC_H */