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#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 74enum 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/* 91 * Actual structure of a DCE UUID 92 */ 93 94typedef struct rpc_uuid 95{ 96 uint32 time_low; 97 uint16 time_mid; 98 uint16 time_hi_and_version; 99 uint8 remaining[8]; 100} RPC_UUID; 101 102#define RPC_UUID_LEN 16 103 104/* RPC_IFACE */ 105typedef struct rpc_iface_info 106{ 107 RPC_UUID uuid; /* 16 bytes of rpc interface identification */ 108 uint32 version; /* the interface version number */ 109 110} RPC_IFACE; 111 112#define RPC_IFACE_LEN (RPC_UUID_LEN + 4) 113 114struct pipe_id_info 115{ 116 /* the names appear not to matter: the syntaxes _do_ matter */ 117 118 const char *client_pipe; 119 RPC_IFACE abstr_syntax; /* this one is the abstract syntax id */ 120 121 const char *server_pipe; /* this one is the secondary syntax name */ 122 RPC_IFACE trans_syntax; /* this one is the primary syntax id */ 123}; 124 125/* RPC_HDR - dce rpc header */ 126typedef struct rpc_hdr_info 127{ 128 uint8 major; /* 5 - RPC major version */ 129 uint8 minor; /* 0 - RPC minor version */ 130 uint8 pkt_type; /* RPC_PKT_TYPE - RPC response packet */ 131 uint8 flags; /* DCE/RPC flags */ 132 uint8 pack_type[4]; /* 0x1000 0000 - little-endian packed data representation */ 133 uint16 frag_len; /* fragment length - data size (bytes) inc header and tail. */ 134 uint16 auth_len; /* 0 - authentication length */ 135 uint32 call_id; /* call identifier. matches 12th uint32 of incoming RPC data. */ 136 137} RPC_HDR; 138 139#define RPC_HEADER_LEN 16 140 141/* RPC_HDR_REQ - ms request rpc header */ 142typedef struct rpc_hdr_req_info 143{ 144 uint32 alloc_hint; /* allocation hint - data size (bytes) minus header and tail. */ 145 uint16 context_id; /* presentation context identifier */ 146 uint16 opnum; /* opnum */ 147 148} RPC_HDR_REQ; 149 150#define RPC_HDR_REQ_LEN 8 151 152/* RPC_HDR_RESP - ms response rpc header */ 153typedef struct rpc_hdr_resp_info 154{ 155 uint32 alloc_hint; /* allocation hint - data size (bytes) minus header and tail. */ 156 uint16 context_id; /* 0 - presentation context identifier */ 157 uint8 cancel_count; /* 0 - cancel count */ 158 uint8 reserved; /* 0 - reserved. */ 159 160} RPC_HDR_RESP; 161 162#define RPC_HDR_RESP_LEN 8 163 164/* RPC_HDR_FAULT - fault rpc header */ 165typedef struct rpc_hdr_fault_info 166{ 167 NTSTATUS status; 168 uint32 reserved; /* 0x0000 0000 */ 169} RPC_HDR_FAULT; 170 171#define RPC_HDR_FAULT_LEN 8 172 173/* this seems to be the same string name depending on the name of the pipe, 174 * but is more likely to be linked to the interface name 175 * "srvsvc", "\\PIPE\\ntsvcs" 176 * "samr", "\\PIPE\\lsass" 177 * "wkssvc", "\\PIPE\\wksvcs" 178 * "NETLOGON", "\\PIPE\\NETLOGON" 179 */ 180/* RPC_ADDR_STR */ 181typedef struct rpc_addr_info 182{ 183 uint16 len; /* length of the string including null terminator */ 184 fstring str; /* the string above in single byte, null terminated form */ 185 186} RPC_ADDR_STR; 187 188/* RPC_HDR_BBA */ 189typedef struct rpc_hdr_bba_info 190{ 191 uint16 max_tsize; /* maximum transmission fragment size (0x1630) */ 192 uint16 max_rsize; /* max receive fragment size (0x1630) */ 193 uint32 assoc_gid; /* associated group id (0x0) */ 194 195} RPC_HDR_BBA; 196 197#define RPC_HDR_BBA_LEN 8 198 199/* RPC_HDR_AUTHA */ 200typedef struct rpc_hdr_autha_info 201{ 202 uint16 max_tsize; /* maximum transmission fragment size (0x1630) */ 203 uint16 max_rsize; /* max receive fragment size (0x1630) */ 204 205 uint8 auth_type; /* 0x0a */ 206 uint8 auth_level; /* 0x06 */ 207 uint8 stub_type_len; /* don't know */ 208 uint8 padding; /* padding */ 209 210 uint32 unknown; /* 0x0014a0c0 */ 211 212} RPC_HDR_AUTHA; 213 214#define RPC_HDR_AUTHA_LEN 12 215 216/* RPC_HDR_AUTH */ 217typedef struct rpc_hdr_auth_info 218{ 219 uint8 auth_type; /* 0x0a */ 220 uint8 auth_level; /* 0x06 */ 221 uint8 padding; 222 uint8 reserved; /* padding */ 223 224 uint32 auth_context; /* pointer */ 225 226} RPC_HDR_AUTH; 227 228#define RPC_HDR_AUTH_LEN 8 229 230/* this is TEMPORARILY coded up as a specific structure */ 231/* this structure comes after the bind request */ 232/* RPC_AUTH_NETSEC_NEG */ 233typedef struct rpc_auth_netsec_neg_info 234{ 235 uint32 type1; /* Always zero ? */ 236 uint32 type2; /* Types 0x3 and 0x13 seen. Check AcquireSecurityContext() docs.... */ 237 fstring domain; /* calling workstations's domain */ 238 fstring myname; /* calling workstation's name */ 239} RPC_AUTH_NETSEC_NEG; 240 241/* attached to the end of encrypted rpc requests and responses */ 242/* RPC_AUTH_NETSEC_CHK */ 243typedef struct rpc_auth_netsec_chk_info 244{ 245 uint8 sig [8]; /* 77 00 7a 00 ff ff 00 00 */ 246 uint8 packet_digest[8]; /* checksum over the packet, MD5'ed with session key */ 247 uint8 seq_num[8]; /* verifier, seq num */ 248 uint8 confounder[8]; /* random 8-byte nonce */ 249} RPC_AUTH_NETSEC_CHK; 250 251struct netsec_auth_struct 252{ 253 uchar sess_key[16]; 254 uint32 seq_num; 255 int auth_flags; 256}; 257 258/* RPC_BIND_REQ - ms req bind */ 259typedef struct rpc_bind_req_info 260{ 261 RPC_HDR_BBA bba; 262 263 uint32 num_elements; /* the number of elements (0x1) */ 264 uint16 context_id; /* presentation context identifier (0x0) */ 265 uint8 num_syntaxes; /* the number of syntaxes (has always been 1?)(0x1) */ 266 267 RPC_IFACE abstract; /* num and vers. of interface client is using */ 268 RPC_IFACE transfer; /* num and vers. of interface to use for replies */ 269 270} RPC_HDR_RB; 271 272/* 273 * The following length is 8 bytes RPC_HDR_BBA_LEN, 8 bytes internals 274 * (with 3 bytes padding), + 2 x RPC_IFACE_LEN bytes for RPC_IFACE structs. 275 */ 276 277#define RPC_HDR_RB_LEN (RPC_HDR_BBA_LEN + 8 + (2*RPC_IFACE_LEN)) 278 279/* RPC_RESULTS - can only cope with one reason, right now... */ 280typedef struct rpc_results_info 281{ 282/* uint8[] # 4-byte alignment padding, against SMB header */ 283 284 uint8 num_results; /* the number of results (0x01) */ 285 286/* uint8[] # 4-byte alignment padding, against SMB header */ 287 288 uint16 result; /* result (0x00 = accept) */ 289 uint16 reason; /* reason (0x00 = no reason specified) */ 290 291} RPC_RESULTS; 292 293/* RPC_HDR_BA */ 294typedef struct rpc_hdr_ba_info 295{ 296 RPC_HDR_BBA bba; 297 298 RPC_ADDR_STR addr ; /* the secondary address string, as described earlier */ 299 RPC_RESULTS res ; /* results and reasons */ 300 RPC_IFACE transfer; /* the transfer syntax from the request */ 301 302} RPC_HDR_BA; 303 304/* RPC_AUTH_VERIFIER */ 305typedef struct rpc_auth_verif_info 306{ 307 fstring signature; /* "NTLMSSP".. Ok, not quite anymore */ 308 uint32 msg_type; /* NTLMSSP_MESSAGE_TYPE (1,2,3) and 5 for schannel */ 309 310} RPC_AUTH_VERIFIER; 311 312/* this is TEMPORARILY coded up as a specific structure */ 313/* this structure comes after the bind request */ 314/* RPC_AUTH_NTLMSSP_NEG */ 315typedef struct rpc_auth_ntlmssp_neg_info 316{ 317 uint32 neg_flgs; /* 0x0000 b2b3 */ 318 319 STRHDR hdr_myname; /* offset is against START of this structure */ 320 STRHDR hdr_domain; /* offset is against START of this structure */ 321 322 fstring myname; /* calling workstation's name */ 323 fstring domain; /* calling workstations's domain */ 324 325} RPC_AUTH_NTLMSSP_NEG; 326 327/* this is TEMPORARILY coded up as a specific structure */ 328/* this structure comes after the bind acknowledgement */ 329/* RPC_AUTH_NTLMSSP_CHAL */ 330typedef struct rpc_auth_ntlmssp_chal_info 331{ 332 uint32 unknown_1; /* 0x0000 0000 */ 333 uint32 unknown_2; /* 0x0000 0028 */ 334 uint32 neg_flags; /* 0x0000 82b1 */ 335 336 uint8 challenge[8]; /* ntlm challenge */ 337 uint8 reserved [8]; /* zeros */ 338 339} RPC_AUTH_NTLMSSP_CHAL; 340 341 342/* RPC_AUTH_NTLMSSP_RESP */ 343typedef struct rpc_auth_ntlmssp_resp_info 344{ 345 STRHDR hdr_lm_resp; /* 24 byte response */ 346 STRHDR hdr_nt_resp; /* 24 byte response */ 347 STRHDR hdr_domain; 348 STRHDR hdr_usr; 349 STRHDR hdr_wks; 350 STRHDR hdr_sess_key; /* NULL unless negotiated */ 351 uint32 neg_flags; /* 0x0000 82b1 */ 352 353 fstring sess_key; 354 fstring wks; 355 fstring user; 356 fstring domain; 357 fstring nt_resp; 358 fstring lm_resp; 359 360} RPC_AUTH_NTLMSSP_RESP; 361 362/* attached to the end of encrypted rpc requests and responses */ 363/* RPC_AUTH_NTLMSSP_CHK */ 364typedef struct rpc_auth_ntlmssp_chk_info 365{ 366 uint32 ver; /* 0x0000 0001 */ 367 uint32 reserved; 368 uint32 crc32; /* checksum using 0xEDB8 8320 as a polynomial */ 369 uint32 seq_num; 370 371} RPC_AUTH_NTLMSSP_CHK; 372 373#define RPC_AUTH_NTLMSSP_CHK_LEN 16 374 375#endif /* _DCE_RPC_H */ 376