source/include/rpc_dce.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3    SMB parameters and setup
   4    Copyright (C) Andrew Tridgell 1992-1997
   5    Copyright (C) Luke Kenneth Casson Leighton 1996-1997
   6    Copyright (C) Paul Ashton 1997
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23 #ifndef _DCE_RPC_H /* _DCE_RPC_H */
  24 #define _DCE_RPC_H
  25
  26 #include "rpc_misc.h"  /* this only pulls in STRHDR */
  27
  28
  29 /* DCE/RPC packet types */
  30
  31 enum RPC_PKT_TYPE
  32 {
  33         RPC_REQUEST = 0x00,
  34         RPC_RESPONSE = 0x02,
  35         RPC_FAULT    = 0x03,
  36         RPC_BIND     = 0x0B,
  37         RPC_BINDACK  = 0x0C,
  38         RPC_BINDNACK = 0x0D,
  39         RPC_ALTCONT  = 0x0E,
  40         RPC_ALTCONTRESP = 0x0F,
  41         RPC_BINDRESP = 0x10 /* not the real name!  this is undocumented! */
  42 };
  43
  44 /* DCE/RPC flags */
  45 #define RPC_FLG_FIRST 0x01
  46 #define RPC_FLG_LAST  0x02
  47 #define RPC_FLG_NOCALL 0x20
  48
  49 #define SMBD_NTLMSSP_NEG_FLAGS 0x000082b1 /* ALWAYS_SIGN|NEG_NTLM|NEG_LM|NEG_SEAL|NEG_SIGN|NEG_UNICODE */
  50
  51 /* NTLMSSP signature version */
  52 #define NTLMSSP_SIGN_VERSION 0x01
  53
  54 /* NTLMSSP auth type and level. */
  55 #define NTLMSSP_AUTH_TYPE 0xa
  56 #define NTLMSSP_AUTH_LEVEL 0x6
  57
  58 /* Maximum PDU fragment size. */
  59 #define MAX_PDU_FRAG_LEN 0x1630
  60 /* #define MAX_PDU_FRAG_LEN 0x10b8              this is what w2k sets */
  61
  62 /*
  63  * Actual structure of a DCE UUID
  64  */
  65
  66 typedef struct rpc_uuid
  67 {
  68   uint32 time_low;
  69   uint16 time_mid;
  70   uint16 time_hi_and_version;
  71   uint8 remaining[8];
  72 } RPC_UUID;
  73
  74 #define RPC_UUID_LEN 16
  75
  76 /* RPC_IFACE */
  77 typedef struct rpc_iface_info
  78 {
  79   RPC_UUID uuid;    /* 16 bytes of rpc interface identification */
  80   uint32 version;    /* the interface version number */
  81
  82 } RPC_IFACE;
  83
  84 #define RPC_IFACE_LEN (RPC_UUID_LEN + 4)
  85
  86 struct pipe_id_info
  87 {
  88         /* the names appear not to matter: the syntaxes _do_ matter */
  89
  90         const char *client_pipe;
  91         RPC_IFACE abstr_syntax; /* this one is the abstract syntax id */
  92
  93         const char *server_pipe;  /* this one is the secondary syntax name */
  94         RPC_IFACE trans_syntax; /* this one is the primary syntax id */
  95 };
  96
  97 /* RPC_HDR - dce rpc header */
  98 typedef struct rpc_hdr_info
  99 {
 100   uint8  major; /* 5 - RPC major version */
 101   uint8  minor; /* 0 - RPC minor version */
 102   uint8  pkt_type; /* RPC_PKT_TYPE - RPC response packet */
 103   uint8  flags; /* DCE/RPC flags */
 104   uint8  pack_type[4]; /* 0x1000 0000 - little-endian packed data representation */
 105   uint16 frag_len; /* fragment length - data size (bytes) inc header and tail. */
 106   uint16 auth_len; /* 0 - authentication length  */
 107   uint32 call_id; /* call identifier.  matches 12th uint32 of incoming RPC data. */
 108
 109 } RPC_HDR;
 110
 111 #define RPC_HEADER_LEN 16
 112
 113 /* RPC_HDR_REQ - ms request rpc header */
 114 typedef struct rpc_hdr_req_info
 115 {
 116   uint32 alloc_hint;   /* allocation hint - data size (bytes) minus header and tail. */
 117   uint16 context_id;   /* 0 - presentation context identifier */
 118   uint16  opnum;        /* opnum */
 119
 120 } RPC_HDR_REQ;
 121
 122 #define RPC_HDR_REQ_LEN 8
 123
 124 /* RPC_HDR_RESP - ms response rpc header */
 125 typedef struct rpc_hdr_resp_info
 126 {
 127   uint32 alloc_hint;   /* allocation hint - data size (bytes) minus header and tail. */
 128   uint16 context_id;   /* 0 - presentation context identifier */
 129   uint8  cancel_count; /* 0 - cancel count */
 130   uint8  reserved;     /* 0 - reserved. */
 131
 132 } RPC_HDR_RESP;
 133
 134 #define RPC_HDR_RESP_LEN 8
 135
 136 /* RPC_HDR_FAULT - fault rpc header */
 137 typedef struct rpc_hdr_fault_info
 138 {
 139   NTSTATUS status;
 140   uint32 reserved; /* 0x0000 0000 */
 141 } RPC_HDR_FAULT;
 142
 143 #define RPC_HDR_FAULT_LEN 8
 144
 145 /* this seems to be the same string name depending on the name of the pipe,
 146  * but is more likely to be linked to the interface name
 147  * "srvsvc", "\\PIPE\\ntsvcs"
 148  * "samr", "\\PIPE\\lsass"
 149  * "wkssvc", "\\PIPE\\wksvcs"
 150  * "NETLOGON", "\\PIPE\\NETLOGON"
 151  */
 152 /* RPC_ADDR_STR */
 153 typedef struct rpc_addr_info
 154 {
 155   uint16 len;   /* length of the string including null terminator */
 156   fstring str; /* the string above in single byte, null terminated form */
 157
 158 } RPC_ADDR_STR;
 159
 160 /* RPC_HDR_BBA */
 161 typedef struct rpc_hdr_bba_info
 162 {
 163   uint16 max_tsize;       /* maximum transmission fragment size (0x1630) */
 164   uint16 max_rsize;       /* max receive fragment size (0x1630) */
 165   uint32 assoc_gid;       /* associated group id (0x0) */
 166
 167 } RPC_HDR_BBA;
 168
 169 #define RPC_HDR_BBA_LEN 8
 170
 171 /* RPC_HDR_AUTHA */
 172 typedef struct rpc_hdr_autha_info
 173 {
 174         uint16 max_tsize;       /* maximum transmission fragment size (0x1630) */
 175         uint16 max_rsize;       /* max receive fragment size (0x1630) */
 176
 177         uint8 auth_type; /* 0x0a */
 178         uint8 auth_level; /* 0x06 */
 179         uint8 stub_type_len; /* don't know */
 180         uint8 padding; /* padding */
 181
 182         uint32 unknown; /* 0x0014a0c0 */
 183
 184 } RPC_HDR_AUTHA;
 185
 186 #define RPC_HDR_AUTHA_LEN 12
 187
 188 /* RPC_HDR_AUTH */
 189 typedef struct rpc_hdr_auth_info
 190 {
 191         uint8 auth_type; /* 0x0a */
 192         uint8 auth_level; /* 0x06 */
 193         uint8 stub_type_len; /* don't know */
 194         uint8 padding; /* padding */
 195
 196         uint32 unknown; /* pointer */
 197
 198 } RPC_HDR_AUTH;
 199
 200 #define RPC_HDR_AUTH_LEN 8
 201
 202 /* RPC_BIND_REQ - ms req bind */
 203 typedef struct rpc_bind_req_info
 204 {
 205   RPC_HDR_BBA bba;
 206
 207   uint32 num_elements;    /* the number of elements (0x1) */
 208   uint16 context_id;      /* presentation context identifier (0x0) */
 209   uint8 num_syntaxes;     /* the number of syntaxes (has always been 1?)(0x1) */
 210
 211   RPC_IFACE abstract;     /* num and vers. of interface client is using */
 212   RPC_IFACE transfer;     /* num and vers. of interface to use for replies */
 213
 214 } RPC_HDR_RB;
 215
 216 /*
 217  * The following length is 8 bytes RPC_HDR_BBA_LEN, 8 bytes internals
 218  * (with 3 bytes padding), + 2 x RPC_IFACE_LEN bytes for RPC_IFACE structs.
 219  */
 220
 221 #define RPC_HDR_RB_LEN (RPC_HDR_BBA_LEN + 8 + (2*RPC_IFACE_LEN))
 222
 223 /* RPC_RESULTS - can only cope with one reason, right now... */
 224 typedef struct rpc_results_info
 225 {
 226 /* uint8[] # 4-byte alignment padding, against SMB header */
 227
 228   uint8 num_results; /* the number of results (0x01) */
 229
 230 /* uint8[] # 4-byte alignment padding, against SMB header */
 231
 232   uint16 result; /* result (0x00 = accept) */
 233   uint16 reason; /* reason (0x00 = no reason specified) */
 234
 235 } RPC_RESULTS;
 236
 237 /* RPC_HDR_BA */
 238 typedef struct rpc_hdr_ba_info
 239 {
 240   RPC_HDR_BBA bba;
 241
 242   RPC_ADDR_STR addr    ;  /* the secondary address string, as described earlier */
 243   RPC_RESULTS  res     ; /* results and reasons */
 244   RPC_IFACE    transfer; /* the transfer syntax from the request */
 245
 246 } RPC_HDR_BA;
 247
 248 /* RPC_AUTH_VERIFIER */
 249 typedef struct rpc_auth_verif_info
 250 {
 251         fstring signature; /* "NTLMSSP" */
 252         uint32  msg_type; /* NTLMSSP_MESSAGE_TYPE (1,2,3) */
 253
 254 } RPC_AUTH_VERIFIER;
 255
 256 /* this is TEMPORARILY coded up as a specific structure */
 257 /* this structure comes after the bind request */
 258 /* RPC_AUTH_NTLMSSP_NEG */
 259 typedef struct rpc_auth_ntlmssp_neg_info
 260 {
 261         uint32  neg_flgs; /* 0x0000 b2b3 */
 262
 263         STRHDR hdr_myname; /* offset is against START of this structure */
 264         STRHDR hdr_domain; /* offset is against START of this structure */
 265
 266         fstring myname; /* calling workstation's name */
 267         fstring domain; /* calling workstations's domain */
 268
 269 } RPC_AUTH_NTLMSSP_NEG;
 270
 271 /* this is TEMPORARILY coded up as a specific structure */
 272 /* this structure comes after the bind acknowledgement */
 273 /* RPC_AUTH_NTLMSSP_CHAL */
 274 typedef struct rpc_auth_ntlmssp_chal_info
 275 {
 276         uint32 unknown_1; /* 0x0000 0000 */
 277         uint32 unknown_2; /* 0x0000 0028 */
 278         uint32 neg_flags; /* 0x0000 82b1 */
 279
 280         uint8 challenge[8]; /* ntlm challenge */
 281         uint8 reserved [8]; /* zeros */
 282
 283 } RPC_AUTH_NTLMSSP_CHAL;
 284
 285
 286 /* RPC_AUTH_NTLMSSP_RESP */
 287 typedef struct rpc_auth_ntlmssp_resp_info
 288 {
 289         STRHDR hdr_lm_resp; /* 24 byte response */
 290         STRHDR hdr_nt_resp; /* 24 byte response */
 291         STRHDR hdr_domain;
 292         STRHDR hdr_usr;
 293         STRHDR hdr_wks;
 294         STRHDR hdr_sess_key; /* NULL unless negotiated */
 295         uint32 neg_flags; /* 0x0000 82b1 */
 296
 297         fstring sess_key;
 298         fstring wks;
 299         fstring user;
 300         fstring domain;
 301         fstring nt_resp;
 302         fstring lm_resp;
 303
 304 } RPC_AUTH_NTLMSSP_RESP;
 305
 306 /* attached to the end of encrypted rpc requests and responses */
 307 /* RPC_AUTH_NTLMSSP_CHK */
 308 typedef struct rpc_auth_ntlmssp_chk_info
 309 {
 310         uint32 ver; /* 0x0000 0001 */
 311         uint32 reserved;
 312         uint32 crc32; /* checksum using 0xEDB8 8320 as a polynomial */
 313         uint32 seq_num;
 314
 315 } RPC_AUTH_NTLMSSP_CHK;
 316
 317 #define RPC_AUTH_NTLMSSP_CHK_LEN 16
 318
 319
 320 #endif /* _DCE_RPC_H */