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 3 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, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #ifndef _DCE_RPC_H /* _DCE_RPC_H */
  23 #define _DCE_RPC_H
  24
  25 /* DCE/RPC packet types */
  26
  27 enum RPC_PKT_TYPE {
  28         RPC_REQUEST  = 0x00,    /* Ordinary request. */
  29         RPC_PING     = 0x01,    /* Connectionless is server alive ? */
  30         RPC_RESPONSE = 0x02,    /* Ordinary reply. */
  31         RPC_FAULT    = 0x03,    /* Fault in processing of call. */
  32         RPC_WORKING  = 0x04,    /* Connectionless reply to a ping when server busy. */
  33         RPC_NOCALL   = 0x05,    /* Connectionless reply to a ping when server has lost part of clients call. */
  34         RPC_REJECT   = 0x06,    /* Refuse a request with a code. */
  35         RPC_ACK      = 0x07,    /* Connectionless client to server code. */
  36         RPC_CL_CANCEL= 0x08,    /* Connectionless cancel. */
  37         RPC_FACK     = 0x09,    /* Connectionless fragment ack. Both client and server send. */
  38         RPC_CANCEL_ACK = 0x0A,  /* Server ACK to client cancel request. */
  39         RPC_BIND     = 0x0B,    /* Bind to interface. */
  40         RPC_BINDACK  = 0x0C,    /* Server ack of bind. */
  41         RPC_BINDNACK = 0x0D,    /* Server nack of bind. */
  42         RPC_ALTCONT  = 0x0E,    /* Alter auth. */
  43         RPC_ALTCONTRESP = 0x0F, /* Reply to alter auth. */
  44         RPC_AUTH3    = 0x10,    /* not the real name!  this is undocumented! */
  45         RPC_SHUTDOWN = 0x11,    /* Server to client request to shutdown. */
  46         RPC_CO_CANCEL= 0x12,    /* Connection-oriented cancel request. */
  47         RPC_ORPHANED = 0x13     /* Client telling server it's aborting a partially sent request or telling
  48                                    server to stop sending replies. */
  49 };
  50
  51 /* DCE/RPC flags */
  52 #define RPC_FLG_FIRST 0x01
  53 #define RPC_FLG_LAST  0x02
  54 #define RPC_FLG_NOCALL 0x20
  55
  56
  57 #define SMBD_NTLMSSP_NEG_FLAGS 0x000082b1 /* ALWAYS_SIGN|NEG_NTLM|NEG_LM|NEG_SEAL|NEG_SIGN|NEG_UNICODE */
  58
  59 /* NTLMSSP signature version */
  60 #define NTLMSSP_SIGN_VERSION 0x01
  61
  62 /* DCE RPC auth types - extended by Microsoft. */
  63 #define RPC_ANONYMOUS_AUTH_TYPE    0
  64 #define RPC_AUTH_TYPE_KRB5_1       1
  65 #define RPC_SPNEGO_AUTH_TYPE       9
  66 #define RPC_NTLMSSP_AUTH_TYPE     10
  67 #define RPC_KRB5_AUTH_TYPE        16 /* Not yet implemented. */
  68 #define RPC_SCHANNEL_AUTH_TYPE    68 /* 0x44 */
  69
  70 /* DCE-RPC standard identifiers to indicate
  71    signing or sealing of an RPC pipe */
  72 #define RPC_AUTH_LEVEL_NONE      1
  73 #define RPC_AUTH_LEVEL_CONNECT   2
  74 #define RPC_AUTH_LEVEL_CALL      3
  75 #define RPC_AUTH_LEVEL_PACKET    4
  76 #define RPC_AUTH_LEVEL_INTEGRITY 5
  77 #define RPC_AUTH_LEVEL_PRIVACY   6
  78
  79 #if 0
  80 #define RPC_PIPE_AUTH_SIGN_LEVEL 0x5
  81 #define RPC_PIPE_AUTH_SEAL_LEVEL 0x6
  82 #endif
  83
  84 #define DCERPC_FAULT_OP_RNG_ERROR       0x1c010002
  85 #define DCERPC_FAULT_UNK_IF             0x1c010003
  86 #define DCERPC_FAULT_INVALID_TAG        0x1c000006
  87 #define DCERPC_FAULT_CONTEXT_MISMATCH   0x1c00001a
  88 #define DCERPC_FAULT_OTHER              0x00000001
  89 #define DCERPC_FAULT_ACCESS_DENIED      0x00000005
  90 #define DCERPC_FAULT_CANT_PERFORM       0x000006d8
  91 #define DCERPC_FAULT_NDR                0x000006f7
  92
  93
  94 /* Netlogon schannel auth type and level */
  95 #define SCHANNEL_SIGN_SIGNATURE { 0x77, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00 }
  96 #define SCHANNEL_SEAL_SIGNATURE { 0x77, 0x00, 0x7a, 0x00, 0xff, 0xff, 0x00, 0x00 }
  97
  98 #define RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN  0x20
  99 #define RPC_AUTH_SCHANNEL_SIGN_ONLY_CHK_LEN     0x18
 100
 101 /* The 7 here seems to be required to get Win2k not to downgrade us
 102    to NT4.  Actually, anything other than 1ff would seem to do... */
 103 #define NETLOGON_NEG_AUTH2_FLAGS 0x000701ff
 104 #define NETLOGON_NEG_DOMAIN_TRUST_ACCOUNT       0x2010b000
 105
 106 /* these are the flags that ADS clients use */
 107 #define NETLOGON_NEG_AUTH2_ADS_FLAGS (0x200fbffb | NETLOGON_NEG_ARCFOUR | NETLOGON_NEG_128BIT | NETLOGON_NEG_SCHANNEL)
 108
 109 #define NETLOGON_NEG_SELECT_AUTH2_FLAGS ((lp_security() == SEC_ADS) ? NETLOGON_NEG_AUTH2_ADS_FLAGS : NETLOGON_NEG_AUTH2_FLAGS)
 110
 111 enum schannel_direction {
 112         SENDER_IS_INITIATOR,
 113         SENDER_IS_ACCEPTOR
 114 };
 115
 116 /* Maximum size of the signing data in a fragment. */
 117 #define RPC_MAX_SIGN_SIZE 0x20 /* 32 */
 118
 119 /* Maximum PDU fragment size. */
 120 /* #define MAX_PDU_FRAG_LEN 0x1630              this is what wnt sets */
 121 #define RPC_MAX_PDU_FRAG_LEN 0x10b8                     /* this is what w2k sets */
 122
 123 /* RPC_IFACE */
 124 typedef struct rpc_iface_info {
 125         struct GUID uuid;  /* 16 bytes of rpc interface identification */
 126         uint32 version;    /* the interface version number */
 127 } RPC_IFACE;
 128
 129 #define RPC_IFACE_LEN (UUID_SIZE + 4)
 130
 131 struct pipe_id_info {
 132         /* the names appear not to matter: the syntaxes _do_ matter */
 133
 134         const char *client_pipe;
 135         RPC_IFACE abstr_syntax; /* this one is the abstract syntax id */
 136
 137         const char *server_pipe;  /* this one is the secondary syntax name */
 138         RPC_IFACE trans_syntax; /* this one is the primary syntax id */
 139 };
 140
 141 /* RPC_HDR - dce rpc header */
 142 typedef struct rpc_hdr_info {
 143         uint8  major; /* 5 - RPC major version */
 144         uint8  minor; /* 0 - RPC minor version */
 145         uint8  pkt_type; /* RPC_PKT_TYPE - RPC response packet */
 146         uint8  flags; /* DCE/RPC flags */
 147         uint8  pack_type[4]; /* 0x1000 0000 - little-endian packed data representation */
 148         uint16 frag_len; /* fragment length - data size (bytes) inc header and tail. */
 149         uint16 auth_len; /* 0 - authentication length  */
 150         uint32 call_id; /* call identifier.  matches 12th uint32 of incoming RPC data. */
 151 } RPC_HDR;
 152
 153 #define RPC_HEADER_LEN 16
 154
 155 /* RPC_HDR_REQ - ms request rpc header */
 156 typedef struct rpc_hdr_req_info {
 157         uint32 alloc_hint;   /* allocation hint - data size (bytes) minus header and tail. */
 158         uint16 context_id;   /* presentation context identifier */
 159         uint16  opnum;       /* opnum */
 160 } RPC_HDR_REQ;
 161
 162 #define RPC_HDR_REQ_LEN 8
 163
 164 /* RPC_HDR_RESP - ms response rpc header */
 165 typedef struct rpc_hdr_resp_info {
 166         uint32 alloc_hint;   /* allocation hint - data size (bytes) minus header and tail. */
 167         uint16 context_id;   /* 0 - presentation context identifier */
 168         uint8  cancel_count; /* 0 - cancel count */
 169         uint8  reserved;     /* 0 - reserved. */
 170 } RPC_HDR_RESP;
 171
 172 #define RPC_HDR_RESP_LEN 8
 173
 174 /* RPC_HDR_FAULT - fault rpc header */
 175 typedef struct rpc_hdr_fault_info {
 176         NTSTATUS status;
 177         uint32 reserved; /* 0x0000 0000 */
 178 } RPC_HDR_FAULT;
 179
 180 #define RPC_HDR_FAULT_LEN 8
 181
 182 /* this seems to be the same string name depending on the name of the pipe,
 183  * but is more likely to be linked to the interface name
 184  * "srvsvc", "\\PIPE\\ntsvcs"
 185  * "samr", "\\PIPE\\lsass"
 186  * "wkssvc", "\\PIPE\\wksvcs"
 187  * "NETLOGON", "\\PIPE\\NETLOGON"
 188  */
 189 /* RPC_ADDR_STR */
 190 typedef struct rpc_addr_info {
 191         uint16 len;   /* length of the string including null terminator */
 192         fstring str; /* the string above in single byte, null terminated form */
 193 } RPC_ADDR_STR;
 194
 195 /* RPC_HDR_BBA - bind acknowledge, and alter context response. */
 196 typedef struct rpc_hdr_bba_info {
 197         uint16 max_tsize;       /* maximum transmission fragment size (0x1630) */
 198         uint16 max_rsize;       /* max receive fragment size (0x1630) */
 199         uint32 assoc_gid;       /* associated group id (0x0) */
 200 } RPC_HDR_BBA;
 201
 202 #define RPC_HDR_BBA_LEN 8
 203
 204 /* RPC_HDR_AUTH */
 205 typedef struct rpc_hdr_auth_info {
 206         uint8 auth_type; /* See XXX_AUTH_TYPE above. */
 207         uint8 auth_level; /* See RPC_PIPE_AUTH_XXX_LEVEL above. */
 208         uint8 auth_pad_len;
 209         uint8 auth_reserved;
 210         uint32 auth_context_id;
 211 } RPC_HDR_AUTH;
 212
 213 #define RPC_HDR_AUTH_LEN 8
 214
 215 /* this is TEMPORARILY coded up as a specific structure */
 216 /* this structure comes after the bind request */
 217 /* RPC_AUTH_SCHANNEL_NEG */
 218 typedef struct rpc_auth_schannel_neg_info {
 219         uint32 type1;   /* Always zero ? */
 220         uint32 type2;   /* Types 0x3 and 0x13 seen. Check AcquireSecurityContext() docs.... */
 221         fstring domain; /* calling workstations's domain */
 222         fstring myname; /* calling workstation's name */
 223 } RPC_AUTH_SCHANNEL_NEG;
 224
 225 /* attached to the end of encrypted rpc requests and responses */
 226 /* RPC_AUTH_SCHANNEL_CHK */
 227 typedef struct rpc_auth_schannel_chk_info {
 228         uint8 sig  [8]; /* 77 00 7a 00 ff ff 00 00 */
 229         uint8 packet_digest[8]; /* checksum over the packet, MD5'ed with session key */
 230         uint8 seq_num[8]; /* verifier, seq num */
 231         uint8 confounder[8]; /* random 8-byte nonce */
 232 } RPC_AUTH_SCHANNEL_CHK;
 233
 234 typedef struct rpc_context {
 235         uint16 context_id;              /* presentation context identifier. */
 236         uint8 num_transfer_syntaxes;    /* the number of syntaxes */
 237         RPC_IFACE abstract;             /* num and vers. of interface client is using */
 238         RPC_IFACE *transfer;            /* Array of transfer interfaces. */
 239 } RPC_CONTEXT;
 240
 241 /* RPC_BIND_REQ - ms req bind */
 242 typedef struct rpc_bind_req_info {
 243         RPC_HDR_BBA bba;
 244         uint8 num_contexts;    /* the number of contexts */
 245         RPC_CONTEXT *rpc_context;
 246 } RPC_HDR_RB;
 247
 248 /*
 249  * The following length is 8 bytes RPC_HDR_BBA_LEN +
 250  * 4 bytes size of context count +
 251  * (context_count * (4 bytes of context_id, size of transfer syntax count + RPC_IFACE_LEN bytes +
 252  *                    (transfer_syntax_count * RPC_IFACE_LEN bytes)))
 253  */
 254
 255 #define RPC_HDR_RB_LEN(rpc_hdr_rb) (RPC_HDR_BBA_LEN + 4 + \
 256         ((rpc_hdr_rb)->num_contexts) * (4 + RPC_IFACE_LEN + (((rpc_hdr_rb)->rpc_context->num_transfer_syntaxes)*RPC_IFACE_LEN)))
 257
 258 /* RPC_RESULTS - can only cope with one reason, right now... */
 259 typedef struct rpc_results_info {
 260         /* uint8[] # 4-byte alignment padding, against SMB header */
 261
 262         uint8 num_results; /* the number of results (0x01) */
 263
 264         /* uint8[] # 4-byte alignment padding, against SMB header */
 265
 266         uint16 result; /* result (0x00 = accept) */
 267         uint16 reason; /* reason (0x00 = no reason specified) */
 268 } RPC_RESULTS;
 269
 270 /* RPC_HDR_BA */
 271 typedef struct rpc_hdr_ba_info {
 272         RPC_HDR_BBA bba;
 273
 274         RPC_ADDR_STR addr    ;  /* the secondary address string, as described earlier */
 275         RPC_RESULTS  res     ; /* results and reasons */
 276         RPC_IFACE    transfer; /* the transfer syntax from the request */
 277 } RPC_HDR_BA;
 278
 279 /* RPC_AUTH_VERIFIER */
 280 typedef struct rpc_auth_verif_info {
 281         fstring signature; /* "NTLMSSP".. Ok, not quite anymore */
 282         uint32  msg_type; /* NTLMSSP_MESSAGE_TYPE (1,2,3) and 5 for schannel */
 283 } RPC_AUTH_VERIFIER;
 284
 285 #endif /* _DCE_RPC_H */