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 31enum 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 67#define RPC_AUTH_NETSEC_SIGN_OR_SEAL_CHK_LEN 0x20 68#define RPC_AUTH_NETSEC_SIGN_ONLY_CHK_LEN 0x18 69 70/* The 7 here seems to be required to get Win2k not to downgrade us 71 to NT4. Actually, anything other than 1ff would seem to do... */ 72#define NETLOGON_NEG_AUTH2_FLAGS 0x000701ff 73 74#define NETLOGON_NEG_SCHANNEL 0x40000000 75#define NETLOGON_NEG_DOMAIN_TRUST_ACCOUNT 0x2010b000 76 77enum netsec_direction 78{ 79 SENDER_IS_INITIATOR, 80 SENDER_IS_ACCEPTOR 81}; 82 83/* Internal Flags to indicate what type of authentication on the pipe */ 84#define AUTH_PIPE_SIGN 0x0001 85#define AUTH_PIPE_SEAL 0x0002 86#define AUTH_PIPE_NTLMSSP 0x0004 87#define AUTH_PIPE_NETSEC 0x0008 88 89/* Maximum PDU fragment size. */ 90/* #define MAX_PDU_FRAG_LEN 0x1630 this is what wnt sets */ 91#define MAX_PDU_FRAG_LEN 0x10b8 /* this is what w2k sets */ 92 93/* RPC_IFACE */ 94typedef struct rpc_iface_info 95{ 96 struct uuid uuid; /* 16 bytes of rpc interface identification */ 97 uint32 version; /* the interface version number */ 98 99} RPC_IFACE; 100 101#define RPC_IFACE_LEN (UUID_SIZE + 4) 102 103struct pipe_id_info 104{ 105 /* the names appear not to matter: the syntaxes _do_ matter */ 106 107 const char *client_pipe; 108 RPC_IFACE abstr_syntax; /* this one is the abstract syntax id */ 109 110 const char *server_pipe; /* this one is the secondary syntax name */ 111 RPC_IFACE trans_syntax; /* this one is the primary syntax id */ 112}; 113 114/* RPC_HDR - dce rpc header */ 115typedef struct rpc_hdr_info 116{ 117 uint8 major; /* 5 - RPC major version */ 118 uint8 minor; /* 0 - RPC minor version */ 119 uint8 pkt_type; /* RPC_PKT_TYPE - RPC response packet */ 120 uint8 flags; /* DCE/RPC flags */ 121 uint8 pack_type[4]; /* 0x1000 0000 - little-endian packed data representation */ 122 uint16 frag_len; /* fragment length - data size (bytes) inc header and tail. */ 123 uint16 auth_len; /* 0 - authentication length */ 124 uint32 call_id; /* call identifier. matches 12th uint32 of incoming RPC data. */ 125 126} RPC_HDR; 127 128#define RPC_HEADER_LEN 16 129 130/* RPC_HDR_REQ - ms request rpc header */ 131typedef struct rpc_hdr_req_info 132{ 133 uint32 alloc_hint; /* allocation hint - data size (bytes) minus header and tail. */ 134 uint16 context_id; /* presentation context identifier */ 135 uint16 opnum; /* opnum */ 136 137} RPC_HDR_REQ; 138 139#define RPC_HDR_REQ_LEN 8 140 141/* RPC_HDR_RESP - ms response rpc header */ 142typedef struct rpc_hdr_resp_info 143{ 144 uint32 alloc_hint; /* allocation hint - data size (bytes) minus header and tail. */ 145 uint16 context_id; /* 0 - presentation context identifier */ 146 uint8 cancel_count; /* 0 - cancel count */ 147 uint8 reserved; /* 0 - reserved. */ 148 149} RPC_HDR_RESP; 150 151#define RPC_HDR_RESP_LEN 8 152 153/* RPC_HDR_FAULT - fault rpc header */ 154typedef struct rpc_hdr_fault_info 155{ 156 NTSTATUS status; 157 uint32 reserved; /* 0x0000 0000 */ 158} RPC_HDR_FAULT; 159 160#define RPC_HDR_FAULT_LEN 8 161 162/* this seems to be the same string name depending on the name of the pipe, 163 * but is more likely to be linked to the interface name 164 * "srvsvc", "\\PIPE\\ntsvcs" 165 * "samr", "\\PIPE\\lsass" 166 * "wkssvc", "\\PIPE\\wksvcs" 167 * "NETLOGON", "\\PIPE\\NETLOGON" 168 */ 169/* RPC_ADDR_STR */ 170typedef struct rpc_addr_info 171{ 172 uint16 len; /* length of the string including null terminator */ 173 fstring str; /* the string above in single byte, null terminated form */ 174 175} RPC_ADDR_STR; 176 177/* RPC_HDR_BBA */ 178typedef struct rpc_hdr_bba_info 179{ 180 uint16 max_tsize; /* maximum transmission fragment size (0x1630) */ 181 uint16 max_rsize; /* max receive fragment size (0x1630) */ 182 uint32 assoc_gid; /* associated group id (0x0) */ 183 184} RPC_HDR_BBA; 185 186#define RPC_HDR_BBA_LEN 8 187 188/* RPC_HDR_AUTHA */ 189typedef struct rpc_hdr_autha_info 190{ 191 uint16 max_tsize; /* maximum transmission fragment size (0x1630) */ 192 uint16 max_rsize; /* max receive fragment size (0x1630) */ 193 194 uint8 auth_type; /* 0x0a */ 195 uint8 auth_level; /* 0x06 */ 196 uint8 stub_type_len; /* don't know */ 197 uint8 padding; /* padding */ 198 199 uint32 unknown; /* 0x0014a0c0 */ 200 201} RPC_HDR_AUTHA; 202 203#define RPC_HDR_AUTHA_LEN 12 204 205/* RPC_HDR_AUTH */ 206typedef struct rpc_hdr_auth_info 207{ 208 uint8 auth_type; /* 0x0a */ 209 uint8 auth_level; /* 0x06 */ 210 uint8 padding; 211 uint8 reserved; /* padding */ 212 213 uint32 auth_context; /* pointer */ 214 215} RPC_HDR_AUTH; 216 217#define RPC_HDR_AUTH_LEN 8 218 219/* this is TEMPORARILY coded up as a specific structure */ 220/* this structure comes after the bind request */ 221/* RPC_AUTH_NETSEC_NEG */ 222typedef struct rpc_auth_netsec_neg_info 223{ 224 uint32 type1; /* Always zero ? */ 225 uint32 type2; /* Types 0x3 and 0x13 seen. Check AcquireSecurityContext() docs.... */ 226 fstring domain; /* calling workstations's domain */ 227 fstring myname; /* calling workstation's name */ 228} RPC_AUTH_NETSEC_NEG; 229 230/* attached to the end of encrypted rpc requests and responses */ 231/* RPC_AUTH_NETSEC_CHK */ 232typedef struct rpc_auth_netsec_chk_info 233{ 234 uint8 sig [8]; /* 77 00 7a 00 ff ff 00 00 */ 235 uint8 packet_digest[8]; /* checksum over the packet, MD5'ed with session key */ 236 uint8 seq_num[8]; /* verifier, seq num */ 237 uint8 confounder[8]; /* random 8-byte nonce */ 238} RPC_AUTH_NETSEC_CHK; 239 240struct netsec_auth_struct 241{ 242 uchar sess_key[16]; 243 uint32 seq_num; 244 int auth_flags; 245}; 246 247/* RPC_BIND_REQ - ms req bind */ 248typedef struct rpc_bind_req_info 249{ 250 RPC_HDR_BBA bba; 251 252 uint32 num_elements; /* the number of elements (0x1) */ 253 uint16 context_id; /* presentation context identifier (0x0) */ 254 uint8 num_syntaxes; /* the number of syntaxes (has always been 1?)(0x1) */ 255 256 RPC_IFACE abstract; /* num and vers. of interface client is using */ 257 RPC_IFACE transfer; /* num and vers. of interface to use for replies */ 258 259} RPC_HDR_RB; 260 261/* 262 * The following length is 8 bytes RPC_HDR_BBA_LEN, 8 bytes internals 263 * (with 3 bytes padding), + 2 x RPC_IFACE_LEN bytes for RPC_IFACE structs. 264 */ 265 266#define RPC_HDR_RB_LEN (RPC_HDR_BBA_LEN + 8 + (2*RPC_IFACE_LEN)) 267 268/* RPC_RESULTS - can only cope with one reason, right now... */ 269typedef struct rpc_results_info 270{ 271/* uint8[] # 4-byte alignment padding, against SMB header */ 272 273 uint8 num_results; /* the number of results (0x01) */ 274 275/* uint8[] # 4-byte alignment padding, against SMB header */ 276 277 uint16 result; /* result (0x00 = accept) */ 278 uint16 reason; /* reason (0x00 = no reason specified) */ 279 280} RPC_RESULTS; 281 282/* RPC_HDR_BA */ 283typedef struct rpc_hdr_ba_info 284{ 285 RPC_HDR_BBA bba; 286 287 RPC_ADDR_STR addr ; /* the secondary address string, as described earlier */ 288 RPC_RESULTS res ; /* results and reasons */ 289 RPC_IFACE transfer; /* the transfer syntax from the request */ 290 291} RPC_HDR_BA; 292 293/* RPC_AUTH_VERIFIER */ 294typedef struct rpc_auth_verif_info 295{ 296 fstring signature; /* "NTLMSSP".. Ok, not quite anymore */ 297 uint32 msg_type; /* NTLMSSP_MESSAGE_TYPE (1,2,3) and 5 for schannel */ 298 299} RPC_AUTH_VERIFIER; 300 301/* this is TEMPORARILY coded up as a specific structure */ 302/* this structure comes after the bind request */ 303/* RPC_AUTH_NTLMSSP_NEG */ 304typedef struct rpc_auth_ntlmssp_neg_info 305{ 306 uint32 neg_flgs; /* 0x0000 b2b3 */ 307 308 STRHDR hdr_myname; /* offset is against START of this structure */ 309 STRHDR hdr_domain; /* offset is against START of this structure */ 310 311 fstring myname; /* calling workstation's name */ 312 fstring domain; /* calling workstations's domain */ 313 314} RPC_AUTH_NTLMSSP_NEG; 315 316/* this is TEMPORARILY coded up as a specific structure */ 317/* this structure comes after the bind acknowledgement */ 318/* RPC_AUTH_NTLMSSP_CHAL */ 319typedef struct rpc_auth_ntlmssp_chal_info 320{ 321 uint32 unknown_1; /* 0x0000 0000 */ 322 uint32 unknown_2; /* 0x0000 0028 */ 323 uint32 neg_flags; /* 0x0000 82b1 */ 324 325 uint8 challenge[8]; /* ntlm challenge */ 326 uint8 reserved [8]; /* zeros */ 327 328} RPC_AUTH_NTLMSSP_CHAL; 329 330 331/* RPC_AUTH_NTLMSSP_RESP */ 332typedef struct rpc_auth_ntlmssp_resp_info 333{ 334 STRHDR hdr_lm_resp; /* 24 byte response */ 335 STRHDR hdr_nt_resp; /* 24 byte response */ 336 STRHDR hdr_domain; 337 STRHDR hdr_usr; 338 STRHDR hdr_wks; 339 STRHDR hdr_sess_key; /* NULL unless negotiated */ 340 uint32 neg_flags; /* 0x0000 82b1 */ 341 342 fstring sess_key; 343 fstring wks; 344 fstring user; 345 fstring domain; 346 fstring nt_resp; 347 fstring lm_resp; 348 349} RPC_AUTH_NTLMSSP_RESP; 350 351/* attached to the end of encrypted rpc requests and responses */ 352/* RPC_AUTH_NTLMSSP_CHK */ 353typedef struct rpc_auth_ntlmssp_chk_info 354{ 355 uint32 ver; /* 0x0000 0001 */ 356 uint32 reserved; 357 uint32 crc32; /* checksum using 0xEDB8 8320 as a polynomial */ 358 uint32 seq_num; 359 360} RPC_AUTH_NTLMSSP_CHK; 361 362#define RPC_AUTH_NTLMSSP_CHK_LEN 16 363 364#endif /* _DCE_RPC_H */ 365