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 /* DCE/RPC packet types */
  27
  28 enum RPC_PKT_TYPE {
  29         RPC_REQUEST  = 0x00,    /* Ordinary request. */
  30         RPC_PING     = 0x01,    /* Connectionless is server alive ? */
  31         RPC_RESPONSE = 0x02,    /* Ordinary reply. */
  32         RPC_FAULT    = 0x03,    /* Fault in processing of call. */
  33         RPC_WORKING  = 0x04,    /* Connectionless reply to a ping when server busy. */
  34         RPC_NOCALL   = 0x05,    /* Connectionless reply to a ping when server has lost part of clients call. */
  35         RPC_REJECT   = 0x06,    /* Refuse a request with a code. */
  36         RPC_ACK      = 0x07,    /* Connectionless client to server code. */
  37         RPC_CL_CANCEL= 0x08,    /* Connectionless cancel. */
  38         RPC_FACK     = 0x09,    /* Connectionless fragment ack. Both client and server send. */
  39         RPC_CANCEL_ACK = 0x0A,  /* Server ACK to client cancel request. */
  40         RPC_BIND     = 0x0B,    /* Bind to interface. */
  41         RPC_BINDACK  = 0x0C,    /* Server ack of bind. */
  42         RPC_BINDNACK = 0x0D,    /* Server nack of bind. */
  43         RPC_ALTCONT  = 0x0E,    /* Alter auth. */
  44         RPC_ALTCONTRESP = 0x0F, /* Reply to alter auth. */
  45         RPC_AUTH3    = 0x10,    /* not the real name!  this is undocumented! */
  46         RPC_SHUTDOWN = 0x11,    /* Server to client request to shutdown. */
  47         RPC_CO_CANCEL= 0x12,    /* Connection-oriented cancel request. */
  48         RPC_ORPHANED = 0x13     /* Client telling server it's aborting a partially sent request or telling
  49                                    server to stop sending replies. */
  50 };
  51
  52 /* DCE/RPC flags */
  53 #define RPC_FLG_FIRST 0x01
  54 #define RPC_FLG_LAST  0x02
  55 #define RPC_FLG_NOCALL 0x20
  56
  57
  58 #define SMBD_NTLMSSP_NEG_FLAGS 0x000082b1 /* ALWAYS_SIGN|NEG_NTLM|NEG_LM|NEG_SEAL|NEG_SIGN|NEG_UNICODE */
  59
  60 /* NTLMSSP signature version */
  61 #define NTLMSSP_SIGN_VERSION 0x01
  62
  63 /* DCE RPC auth types - extended by Microsoft. */
  64 #define RPC_ANONYMOUS_AUTH_TYPE    0
  65 #define RPC_AUTH_TYPE_KRB5_1       1
  66 #define RPC_SPNEGO_AUTH_TYPE       9
  67 #define RPC_NTLMSSP_AUTH_TYPE     10
  68 #define RPC_KRB5_AUTH_TYPE        16 /* Not yet implemented. */
  69 #define RPC_SCHANNEL_AUTH_TYPE    68 /* 0x44 */
  70
  71 /* DCE-RPC standard identifiers to indicate
  72    signing or sealing of an RPC pipe */
  73 #define RPC_AUTH_LEVEL_NONE      1
  74 #define RPC_AUTH_LEVEL_CONNECT   2
  75 #define RPC_AUTH_LEVEL_CALL      3
  76 #define RPC_AUTH_LEVEL_PACKET    4
  77 #define RPC_AUTH_LEVEL_INTEGRITY 5
  78 #define RPC_AUTH_LEVEL_PRIVACY   6
  79
  80 #if 0
  81 #define RPC_PIPE_AUTH_SIGN_LEVEL 0x5
  82 #define RPC_PIPE_AUTH_SEAL_LEVEL 0x6
  83 #endif
  84
  85 /* Netlogon schannel auth type and level */
  86 #define SCHANNEL_SIGN_SIGNATURE { 0x77, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00 }
  87 #define SCHANNEL_SEAL_SIGNATURE { 0x77, 0x00, 0x7a, 0x00, 0xff, 0xff, 0x00, 0x00 }
  88
  89 #define RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN  0x20
  90 #define RPC_AUTH_SCHANNEL_SIGN_ONLY_CHK_LEN     0x18
  91
  92
  93 /* The 7 here seems to be required to get Win2k not to downgrade us
  94    to NT4.  Actually, anything other than 1ff would seem to do... */
  95 #define NETLOGON_NEG_AUTH2_FLAGS 0x000701ff
  96
  97 #define NETLOGON_NEG_SCHANNEL                   0x40000000
  98 #define NETLOGON_NEG_DOMAIN_TRUST_ACCOUNT       0x2010b000
  99
 100 enum schannel_direction {
 101         SENDER_IS_INITIATOR,
 102         SENDER_IS_ACCEPTOR
 103 };
 104
 105 /* Maximum size of the signing data in a fragment. */
 106 #define RPC_MAX_SIGN_SIZE 0x20 /* 32 */
 107
 108 /* Maximum PDU fragment size. */
 109 /* #define MAX_PDU_FRAG_LEN 0x1630              this is what wnt sets */
 110 #define RPC_MAX_PDU_FRAG_LEN 0x10b8                     /* this is what w2k sets */
 111
 112 /* RPC_IFACE */
 113 typedef struct rpc_iface_info {
 114         struct uuid uuid;  /* 16 bytes of rpc interface identification */
 115         uint32 version;    /* the interface version number */
 116 } RPC_IFACE;
 117
 118 #define RPC_IFACE_LEN (UUID_SIZE + 4)
 119
 120 struct pipe_id_info {
 121         /* the names appear not to matter: the syntaxes _do_ matter */
 122
 123         const char *client_pipe;
 124         RPC_IFACE abstr_syntax; /* this one is the abstract syntax id */
 125
 126         const char *server_pipe;  /* this one is the secondary syntax name */
 127         RPC_IFACE trans_syntax; /* this one is the primary syntax id */
 128 };
 129
 130 /* RPC_HDR - dce rpc header */
 131 typedef struct rpc_hdr_info {
 132         uint8  major; /* 5 - RPC major version */
 133         uint8  minor; /* 0 - RPC minor version */
 134         uint8  pkt_type; /* RPC_PKT_TYPE - RPC response packet */
 135         uint8  flags; /* DCE/RPC flags */
 136         uint8  pack_type[4]; /* 0x1000 0000 - little-endian packed data representation */
 137         uint16 frag_len; /* fragment length - data size (bytes) inc header and tail. */
 138         uint16 auth_len; /* 0 - authentication length  */
 139         uint32 call_id; /* call identifier.  matches 12th uint32 of incoming RPC data. */
 140 } RPC_HDR;
 141
 142 #define RPC_HEADER_LEN 16
 143
 144 /* RPC_HDR_REQ - ms request rpc header */
 145 typedef struct rpc_hdr_req_info {
 146         uint32 alloc_hint;   /* allocation hint - data size (bytes) minus header and tail. */
 147         uint16 context_id;   /* presentation context identifier */
 148         uint16  opnum;       /* opnum */
 149 } RPC_HDR_REQ;
 150
 151 #define RPC_HDR_REQ_LEN 8
 152
 153 /* RPC_HDR_RESP - ms response rpc header */
 154 typedef struct rpc_hdr_resp_info {
 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 } RPC_HDR_RESP;
 160
 161 #define RPC_HDR_RESP_LEN 8
 162
 163 /* RPC_HDR_FAULT - fault rpc header */
 164 typedef struct rpc_hdr_fault_info {
 165         NTSTATUS status;
 166         uint32 reserved; /* 0x0000 0000 */
 167 } RPC_HDR_FAULT;
 168
 169 #define RPC_HDR_FAULT_LEN 8
 170
 171 /* this seems to be the same string name depending on the name of the pipe,
 172  * but is more likely to be linked to the interface name
 173  * "srvsvc", "\\PIPE\\ntsvcs"
 174  * "samr", "\\PIPE\\lsass"
 175  * "wkssvc", "\\PIPE\\wksvcs"
 176  * "NETLOGON", "\\PIPE\\NETLOGON"
 177  */
 178 /* RPC_ADDR_STR */
 179 typedef struct rpc_addr_info {
 180         uint16 len;   /* length of the string including null terminator */
 181         fstring str; /* the string above in single byte, null terminated form */
 182 } RPC_ADDR_STR;
 183
 184 /* RPC_HDR_BBA - bind acknowledge, and alter context response. */
 185 typedef struct rpc_hdr_bba_info {
 186         uint16 max_tsize;       /* maximum transmission fragment size (0x1630) */
 187         uint16 max_rsize;       /* max receive fragment size (0x1630) */
 188         uint32 assoc_gid;       /* associated group id (0x0) */
 189 } RPC_HDR_BBA;
 190
 191 #define RPC_HDR_BBA_LEN 8
 192
 193 /* RPC_HDR_AUTH */
 194 typedef struct rpc_hdr_auth_info {
 195         uint8 auth_type; /* See XXX_AUTH_TYPE above. */
 196         uint8 auth_level; /* See RPC_PIPE_AUTH_XXX_LEVEL above. */
 197         uint8 auth_pad_len;
 198         uint8 auth_reserved;
 199         uint32 auth_context_id;
 200 } RPC_HDR_AUTH;
 201
 202 #define RPC_HDR_AUTH_LEN 8
 203
 204 /* this is TEMPORARILY coded up as a specific structure */
 205 /* this structure comes after the bind request */
 206 /* RPC_AUTH_SCHANNEL_NEG */
 207 typedef struct rpc_auth_schannel_neg_info {
 208         uint32 type1;   /* Always zero ? */
 209         uint32 type2;   /* Types 0x3 and 0x13 seen. Check AcquireSecurityContext() docs.... */
 210         fstring domain; /* calling workstations's domain */
 211         fstring myname; /* calling workstation's name */
 212 } RPC_AUTH_SCHANNEL_NEG;
 213
 214 /* attached to the end of encrypted rpc requests and responses */
 215 /* RPC_AUTH_SCHANNEL_CHK */
 216 typedef struct rpc_auth_schannel_chk_info {
 217         uint8 sig  [8]; /* 77 00 7a 00 ff ff 00 00 */
 218         uint8 packet_digest[8]; /* checksum over the packet, MD5'ed with session key */
 219         uint8 seq_num[8]; /* verifier, seq num */
 220         uint8 confounder[8]; /* random 8-byte nonce */
 221 } RPC_AUTH_SCHANNEL_CHK;
 222
 223 typedef struct rpc_context {
 224         uint16 context_id;              /* presentation context identifier. */
 225         uint8 num_transfer_syntaxes;    /* the number of syntaxes */
 226         RPC_IFACE abstract;             /* num and vers. of interface client is using */
 227         RPC_IFACE *transfer;            /* Array of transfer interfaces. */
 228 } RPC_CONTEXT;
 229
 230 /* RPC_BIND_REQ - ms req bind */
 231 typedef struct rpc_bind_req_info {
 232         RPC_HDR_BBA bba;
 233         uint8 num_contexts;    /* the number of contexts */
 234         RPC_CONTEXT *rpc_context;
 235 } RPC_HDR_RB;
 236
 237 /*
 238  * The following length is 8 bytes RPC_HDR_BBA_LEN +
 239  * 4 bytes size of context count +
 240  * (context_count * (4 bytes of context_id, size of transfer syntax count + RPC_IFACE_LEN bytes +
 241  *                    (transfer_syntax_count * RPC_IFACE_LEN bytes)))
 242  */
 243
 244 #define RPC_HDR_RB_LEN(rpc_hdr_rb) (RPC_HDR_BBA_LEN + 4 + \
 245         ((rpc_hdr_rb)->num_contexts) * (4 + RPC_IFACE_LEN + (((rpc_hdr_rb)->rpc_context->num_transfer_syntaxes)*RPC_IFACE_LEN)))
 246
 247 /* RPC_RESULTS - can only cope with one reason, right now... */
 248 typedef struct rpc_results_info {
 249         /* uint8[] # 4-byte alignment padding, against SMB header */
 250
 251         uint8 num_results; /* the number of results (0x01) */
 252
 253         /* uint8[] # 4-byte alignment padding, against SMB header */
 254
 255         uint16 result; /* result (0x00 = accept) */
 256         uint16 reason; /* reason (0x00 = no reason specified) */
 257 } RPC_RESULTS;
 258
 259 /* RPC_HDR_BA */
 260 typedef struct rpc_hdr_ba_info {
 261         RPC_HDR_BBA bba;
 262
 263         RPC_ADDR_STR addr    ;  /* the secondary address string, as described earlier */
 264         RPC_RESULTS  res     ; /* results and reasons */
 265         RPC_IFACE    transfer; /* the transfer syntax from the request */
 266 } RPC_HDR_BA;
 267
 268 /* RPC_AUTH_VERIFIER */
 269 typedef struct rpc_auth_verif_info {
 270         fstring signature; /* "NTLMSSP".. Ok, not quite anymore */
 271         uint32  msg_type; /* NTLMSSP_MESSAGE_TYPE (1,2,3) and 5 for schannel */
 272 } RPC_AUTH_VERIFIER;
 273
 274 #endif /* _DCE_RPC_H */