source3/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 */
  55 #define NTLMSSP_AUTH_TYPE 0xa
  56
  57 /* DCE-RPC standard identifiers to indicate
  58    signing or sealing of an RPC pipe */
  59 #define RPC_PIPE_AUTH_SIGN_LEVEL 0x5
  60 #define RPC_PIPE_AUTH_SEAL_LEVEL 0x6
  61
  62 /* Netlogon schannel auth type and level */
  63 #define NETSEC_AUTH_TYPE 0x44
  64 #define NETSEC_SIGN_SIGNATURE { 0x77, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00 }
  65 #define NETSEC_SEAL_SIGNATURE { 0x77, 0x00, 0x7a, 0x00, 0xff, 0xff, 0x00, 0x00 }
  66 #define RPC_AUTH_NETSEC_CHK_LEN 0x20
  67
  68 /* The 7 here seems to be required to get Win2k not to downgrade us
  69    to NT4.  Actually, anything other than 1ff would seem to do... */
  70 #define NETLOGON_NEG_AUTH2_FLAGS 0x000701ff
  71
  72 #define NETLOGON_NEG_SCHANNEL    0x40000000
  73
  74 enum netsec_direction
  75 {
  76         SENDER_IS_INITIATOR,
  77         SENDER_IS_ACCEPTOR
  78 };
  79
  80 /* Internal Flags to indicate what type of authentication on the pipe */
  81 #define AUTH_PIPE_SIGN    0x0001
  82 #define AUTH_PIPE_SEAL    0x0002
  83 #define AUTH_PIPE_NTLMSSP 0x0004
  84 #define AUTH_PIPE_NETSEC  0x0008
  85
  86 /* Maximum PDU fragment size. */
  87 /* #define MAX_PDU_FRAG_LEN 0x1630              this is what wnt sets */
  88 #define MAX_PDU_FRAG_LEN 0x10b8                 /* this is what w2k sets */
  89
  90 /* RPC_IFACE */
  91 typedef struct rpc_iface_info
  92 {
  93   struct uuid uuid;  /* 16 bytes of rpc interface identification */
  94   uint32 version;    /* the interface version number */
  95
  96 } RPC_IFACE;
  97
  98 #define RPC_IFACE_LEN (UUID_SIZE + 4)
  99
 100 struct pipe_id_info
 101 {
 102         /* the names appear not to matter: the syntaxes _do_ matter */
 103
 104         const char *client_pipe;
 105         RPC_IFACE abstr_syntax; /* this one is the abstract syntax id */
 106
 107         const char *server_pipe;  /* this one is the secondary syntax name */
 108         RPC_IFACE trans_syntax; /* this one is the primary syntax id */
 109 };
 110
 111 /* RPC_HDR - dce rpc header */
 112 typedef struct rpc_hdr_info
 113 {
 114   uint8  major; /* 5 - RPC major version */
 115   uint8  minor; /* 0 - RPC minor version */
 116   uint8  pkt_type; /* RPC_PKT_TYPE - RPC response packet */
 117   uint8  flags; /* DCE/RPC flags */
 118   uint8  pack_type[4]; /* 0x1000 0000 - little-endian packed data representation */
 119   uint16 frag_len; /* fragment length - data size (bytes) inc header and tail. */
 120   uint16 auth_len; /* 0 - authentication length  */
 121   uint32 call_id; /* call identifier.  matches 12th uint32 of incoming RPC data. */
 122
 123 } RPC_HDR;
 124
 125 #define RPC_HEADER_LEN 16
 126
 127 /* RPC_HDR_REQ - ms request rpc header */
 128 typedef struct rpc_hdr_req_info
 129 {
 130   uint32 alloc_hint;   /* allocation hint - data size (bytes) minus header and tail. */
 131   uint16 context_id;   /* presentation context identifier */
 132   uint16  opnum;       /* opnum */
 133
 134 } RPC_HDR_REQ;
 135
 136 #define RPC_HDR_REQ_LEN 8
 137
 138 /* RPC_HDR_RESP - ms response rpc header */
 139 typedef struct rpc_hdr_resp_info
 140 {
 141   uint32 alloc_hint;   /* allocation hint - data size (bytes) minus header and tail. */
 142   uint16 context_id;   /* 0 - presentation context identifier */
 143   uint8  cancel_count; /* 0 - cancel count */
 144   uint8  reserved;     /* 0 - reserved. */
 145
 146 } RPC_HDR_RESP;
 147
 148 #define RPC_HDR_RESP_LEN 8
 149
 150 /* RPC_HDR_FAULT - fault rpc header */
 151 typedef struct rpc_hdr_fault_info
 152 {
 153   NTSTATUS status;
 154   uint32 reserved; /* 0x0000 0000 */
 155 } RPC_HDR_FAULT;
 156
 157 #define RPC_HDR_FAULT_LEN 8
 158
 159 /* this seems to be the same string name depending on the name of the pipe,
 160  * but is more likely to be linked to the interface name
 161  * "srvsvc", "\\PIPE\\ntsvcs"
 162  * "samr", "\\PIPE\\lsass"
 163  * "wkssvc", "\\PIPE\\wksvcs"
 164  * "NETLOGON", "\\PIPE\\NETLOGON"
 165  */
 166 /* RPC_ADDR_STR */
 167 typedef struct rpc_addr_info
 168 {
 169   uint16 len;   /* length of the string including null terminator */
 170   fstring str; /* the string above in single byte, null terminated form */
 171
 172 } RPC_ADDR_STR;
 173
 174 /* RPC_HDR_BBA */
 175 typedef struct rpc_hdr_bba_info
 176 {
 177   uint16 max_tsize;       /* maximum transmission fragment size (0x1630) */
 178   uint16 max_rsize;       /* max receive fragment size (0x1630) */
 179   uint32 assoc_gid;       /* associated group id (0x0) */
 180
 181 } RPC_HDR_BBA;
 182
 183 #define RPC_HDR_BBA_LEN 8
 184
 185 /* RPC_HDR_AUTHA */
 186 typedef struct rpc_hdr_autha_info
 187 {
 188         uint16 max_tsize;       /* maximum transmission fragment size (0x1630) */
 189         uint16 max_rsize;       /* max receive fragment size (0x1630) */
 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; /* 0x0014a0c0 */
 197
 198 } RPC_HDR_AUTHA;
 199
 200 #define RPC_HDR_AUTHA_LEN 12
 201
 202 /* RPC_HDR_AUTH */
 203 typedef struct rpc_hdr_auth_info
 204 {
 205         uint8 auth_type; /* 0x0a */
 206         uint8 auth_level; /* 0x06 */
 207         uint8 padding;
 208         uint8 reserved; /* padding */
 209
 210         uint32 auth_context; /* pointer */
 211
 212 } RPC_HDR_AUTH;
 213
 214 #define RPC_HDR_AUTH_LEN 8
 215
 216 /* this is TEMPORARILY coded up as a specific structure */
 217 /* this structure comes after the bind request */
 218 /* RPC_AUTH_NETSEC_NEG */
 219 typedef struct rpc_auth_netsec_neg_info
 220 {
 221         uint32 type1;   /* Always zero ? */
 222         uint32 type2;   /* Types 0x3 and 0x13 seen. Check AcquireSecurityContext() docs.... */
 223         fstring domain; /* calling workstations's domain */
 224         fstring myname; /* calling workstation's name */
 225 } RPC_AUTH_NETSEC_NEG;
 226
 227 /* attached to the end of encrypted rpc requests and responses */
 228 /* RPC_AUTH_NETSEC_CHK */
 229 typedef struct rpc_auth_netsec_chk_info
 230 {
 231         uint8 sig  [8]; /* 77 00 7a 00 ff ff 00 00 */
 232         uint8 packet_digest[8]; /* checksum over the packet, MD5'ed with session key */
 233         uint8 seq_num[8]; /* verifier, seq num */
 234         uint8 confounder[8]; /* random 8-byte nonce */
 235 } RPC_AUTH_NETSEC_CHK;
 236
 237 struct netsec_auth_struct
 238 {
 239         uchar sess_key[16];
 240         uint32 seq_num;
 241         int auth_flags;
 242 };
 243
 244 /* RPC_BIND_REQ - ms req bind */
 245 typedef struct rpc_bind_req_info
 246 {
 247   RPC_HDR_BBA bba;
 248
 249   uint32 num_elements;    /* the number of elements (0x1) */
 250   uint16 context_id;      /* presentation context identifier (0x0) */
 251   uint8 num_syntaxes;     /* the number of syntaxes (has always been 1?)(0x1) */
 252
 253   RPC_IFACE abstract;     /* num and vers. of interface client is using */
 254   RPC_IFACE transfer;     /* num and vers. of interface to use for replies */
 255
 256 } RPC_HDR_RB;
 257
 258 /*
 259  * The following length is 8 bytes RPC_HDR_BBA_LEN, 8 bytes internals
 260  * (with 3 bytes padding), + 2 x RPC_IFACE_LEN bytes for RPC_IFACE structs.
 261  */
 262
 263 #define RPC_HDR_RB_LEN (RPC_HDR_BBA_LEN + 8 + (2*RPC_IFACE_LEN))
 264
 265 /* RPC_RESULTS - can only cope with one reason, right now... */
 266 typedef struct rpc_results_info
 267 {
 268 /* uint8[] # 4-byte alignment padding, against SMB header */
 269
 270   uint8 num_results; /* the number of results (0x01) */
 271
 272 /* uint8[] # 4-byte alignment padding, against SMB header */
 273
 274   uint16 result; /* result (0x00 = accept) */
 275   uint16 reason; /* reason (0x00 = no reason specified) */
 276
 277 } RPC_RESULTS;
 278
 279 /* RPC_HDR_BA */
 280 typedef struct rpc_hdr_ba_info
 281 {
 282   RPC_HDR_BBA bba;
 283
 284   RPC_ADDR_STR addr    ;  /* the secondary address string, as described earlier */
 285   RPC_RESULTS  res     ; /* results and reasons */
 286   RPC_IFACE    transfer; /* the transfer syntax from the request */
 287
 288 } RPC_HDR_BA;
 289
 290 /* RPC_AUTH_VERIFIER */
 291 typedef struct rpc_auth_verif_info
 292 {
 293         fstring signature; /* "NTLMSSP".. Ok, not quite anymore */
 294         uint32  msg_type; /* NTLMSSP_MESSAGE_TYPE (1,2,3) and 5 for schannel */
 295
 296 } RPC_AUTH_VERIFIER;
 297
 298 /* this is TEMPORARILY coded up as a specific structure */
 299 /* this structure comes after the bind request */
 300 /* RPC_AUTH_NTLMSSP_NEG */
 301 typedef struct rpc_auth_ntlmssp_neg_info
 302 {
 303         uint32  neg_flgs; /* 0x0000 b2b3 */
 304
 305         STRHDR hdr_myname; /* offset is against START of this structure */
 306         STRHDR hdr_domain; /* offset is against START of this structure */
 307
 308         fstring myname; /* calling workstation's name */
 309         fstring domain; /* calling workstations's domain */
 310
 311 } RPC_AUTH_NTLMSSP_NEG;
 312
 313 /* this is TEMPORARILY coded up as a specific structure */
 314 /* this structure comes after the bind acknowledgement */
 315 /* RPC_AUTH_NTLMSSP_CHAL */
 316 typedef struct rpc_auth_ntlmssp_chal_info
 317 {
 318         uint32 unknown_1; /* 0x0000 0000 */
 319         uint32 unknown_2; /* 0x0000 0028 */
 320         uint32 neg_flags; /* 0x0000 82b1 */
 321
 322         uint8 challenge[8]; /* ntlm challenge */
 323         uint8 reserved [8]; /* zeros */
 324
 325 } RPC_AUTH_NTLMSSP_CHAL;
 326
 327
 328 /* RPC_AUTH_NTLMSSP_RESP */
 329 typedef struct rpc_auth_ntlmssp_resp_info
 330 {
 331         STRHDR hdr_lm_resp; /* 24 byte response */
 332         STRHDR hdr_nt_resp; /* 24 byte response */
 333         STRHDR hdr_domain;
 334         STRHDR hdr_usr;
 335         STRHDR hdr_wks;
 336         STRHDR hdr_sess_key; /* NULL unless negotiated */
 337         uint32 neg_flags; /* 0x0000 82b1 */
 338
 339         fstring sess_key;
 340         fstring wks;
 341         fstring user;
 342         fstring domain;
 343         fstring nt_resp;
 344         fstring lm_resp;
 345
 346 } RPC_AUTH_NTLMSSP_RESP;
 347
 348 /* attached to the end of encrypted rpc requests and responses */
 349 /* RPC_AUTH_NTLMSSP_CHK */
 350 typedef struct rpc_auth_ntlmssp_chk_info
 351 {
 352         uint32 ver; /* 0x0000 0001 */
 353         uint32 reserved;
 354         uint32 crc32; /* checksum using 0xEDB8 8320 as a polynomial */
 355         uint32 seq_num;
 356
 357 } RPC_AUTH_NTLMSSP_CHK;
 358
 359 #define RPC_AUTH_NTLMSSP_CHK_LEN 16
 360
 361 #endif /* _DCE_RPC_H */