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 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 /* DCE RPC auth types - extended by Microsoft. */
  57 #define RPC_ANONYMOUS_AUTH_TYPE    0
  58 #define RPC_AUTH_TYPE_KRB5_1       1
  59 #define RPC_SPNEGO_AUTH_TYPE       9
  60 #define RPC_NTLMSSP_AUTH_TYPE     10
  61 #define RPC_KRB5_AUTH_TYPE        16 /* Not yet implemented. */
  62 #define RPC_SCHANNEL_AUTH_TYPE    68 /* 0x44 */
  63
  64 #if 0
  65 #define RPC_PIPE_AUTH_SIGN_LEVEL 0x5
  66 #define RPC_PIPE_AUTH_SEAL_LEVEL 0x6
  67 #endif
  68
  69 /* Netlogon schannel auth type and level */
  70 #define SCHANNEL_SIGN_SIGNATURE { 0x77, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00 }
  71 #define SCHANNEL_SEAL_SIGNATURE { 0x77, 0x00, 0x7a, 0x00, 0xff, 0xff, 0x00, 0x00 }
  72
  73 #define RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN  0x20
  74 #define RPC_AUTH_SCHANNEL_SIGN_ONLY_CHK_LEN     0x18
  75
  76
  77 enum schannel_direction {
  78         SENDER_IS_INITIATOR,
  79         SENDER_IS_ACCEPTOR
  80 };
  81
  82 /* Maximum size of the signing data in a fragment. */
  83 #define RPC_MAX_SIGN_SIZE 0x38 /* 56 */
  84
  85 /* Maximum PDU fragment size. */
  86 /* #define MAX_PDU_FRAG_LEN 0x1630              this is what wnt sets */
  87 #define RPC_MAX_PDU_FRAG_LEN 0x10b8                     /* this is what w2k sets */
  88
  89 #define RPC_IFACE_LEN (UUID_SIZE + 4)
  90
  91 /* RPC_HDR - dce rpc header */
  92 typedef struct rpc_hdr_info {
  93         uint8  major; /* 5 - RPC major version */
  94         uint8  minor; /* 0 - RPC minor version */
  95         uint8  pkt_type; /* RPC_PKT_TYPE - RPC response packet */
  96         uint8  flags; /* DCE/RPC flags */
  97         uint8  pack_type[4]; /* 0x1000 0000 - little-endian packed data representation */
  98         uint16 frag_len; /* fragment length - data size (bytes) inc header and tail. */
  99         uint16 auth_len; /* 0 - authentication length  */
 100         uint32 call_id; /* call identifier.  matches 12th uint32 of incoming RPC data. */
 101 } RPC_HDR;
 102
 103 #define RPC_HEADER_LEN 16
 104
 105 /* RPC_HDR_REQ - ms request rpc header */
 106 typedef struct rpc_hdr_req_info {
 107         uint32 alloc_hint;   /* allocation hint - data size (bytes) minus header and tail. */
 108         uint16 context_id;   /* presentation context identifier */
 109         uint16  opnum;       /* opnum */
 110 } RPC_HDR_REQ;
 111
 112 #define RPC_HDR_REQ_LEN 8
 113
 114 /* RPC_HDR_RESP - ms response rpc header */
 115 typedef struct rpc_hdr_resp_info {
 116         uint32 alloc_hint;   /* allocation hint - data size (bytes) minus header and tail. */
 117         uint16 context_id;   /* 0 - presentation context identifier */
 118         uint8  cancel_count; /* 0 - cancel count */
 119         uint8  reserved;     /* 0 - reserved. */
 120 } RPC_HDR_RESP;
 121
 122 #define RPC_HDR_RESP_LEN 8
 123
 124 /* RPC_HDR_FAULT - fault rpc header */
 125 typedef struct rpc_hdr_fault_info {
 126         NTSTATUS status;
 127         uint32 reserved; /* 0x0000 0000 */
 128 } RPC_HDR_FAULT;
 129
 130 #define RPC_HDR_FAULT_LEN 8
 131
 132 /* this seems to be the same string name depending on the name of the pipe,
 133  * but is more likely to be linked to the interface name
 134  * "srvsvc", "\\PIPE\\ntsvcs"
 135  * "samr", "\\PIPE\\lsass"
 136  * "wkssvc", "\\PIPE\\wksvcs"
 137  * "NETLOGON", "\\PIPE\\NETLOGON"
 138  */
 139 /* RPC_ADDR_STR */
 140 typedef struct rpc_addr_info {
 141         uint16 len;   /* length of the string including null terminator */
 142         fstring str; /* the string above in single byte, null terminated form */
 143 } RPC_ADDR_STR;
 144
 145 /* RPC_HDR_BBA - bind acknowledge, and alter context response. */
 146 typedef struct rpc_hdr_bba_info {
 147         uint16 max_tsize;       /* maximum transmission fragment size (0x1630) */
 148         uint16 max_rsize;       /* max receive fragment size (0x1630) */
 149         uint32 assoc_gid;       /* associated group id (0x0) */
 150 } RPC_HDR_BBA;
 151
 152 #define RPC_HDR_BBA_LEN 8
 153
 154 /* RPC_HDR_AUTH */
 155 typedef struct rpc_hdr_auth_info {
 156         uint8 auth_type; /* See XXX_AUTH_TYPE above. */
 157         uint8 auth_level; /* See RPC_PIPE_AUTH_XXX_LEVEL above. */
 158         uint8 auth_pad_len;
 159         uint8 auth_reserved;
 160         uint32 auth_context_id;
 161 } RPC_HDR_AUTH;
 162
 163 #define RPC_HDR_AUTH_LEN 8
 164
 165 typedef struct rpc_context {
 166         uint16 context_id;              /* presentation context identifier. */
 167         uint8 num_transfer_syntaxes;    /* the number of syntaxes */
 168         struct ndr_syntax_id abstract;  /* num and vers. of interface client is using */
 169         struct ndr_syntax_id *transfer; /* Array of transfer interfaces. */
 170 } RPC_CONTEXT;
 171
 172 /* RPC_BIND_REQ - ms req bind */
 173 typedef struct rpc_bind_req_info {
 174         RPC_HDR_BBA bba;
 175         uint8 num_contexts;    /* the number of contexts */
 176         RPC_CONTEXT *rpc_context;
 177 } RPC_HDR_RB;
 178
 179 /*
 180  * The following length is 8 bytes RPC_HDR_BBA_LEN +
 181  * 4 bytes size of context count +
 182  * (context_count * (4 bytes of context_id, size of transfer syntax count + RPC_IFACE_LEN bytes +
 183  *                    (transfer_syntax_count * RPC_IFACE_LEN bytes)))
 184  */
 185
 186 #define RPC_HDR_RB_LEN(rpc_hdr_rb) (RPC_HDR_BBA_LEN + 4 + \
 187         ((rpc_hdr_rb)->num_contexts) * (4 + RPC_IFACE_LEN + (((rpc_hdr_rb)->rpc_context->num_transfer_syntaxes)*RPC_IFACE_LEN)))
 188
 189 /* RPC_RESULTS - can only cope with one reason, right now... */
 190 typedef struct rpc_results_info {
 191         /* uint8[] # 4-byte alignment padding, against SMB header */
 192
 193         uint8 num_results; /* the number of results (0x01) */
 194
 195         /* uint8[] # 4-byte alignment padding, against SMB header */
 196
 197         uint16 result; /* result (0x00 = accept) */
 198         uint16 reason; /* reason (0x00 = no reason specified) */
 199 } RPC_RESULTS;
 200
 201 /* RPC_HDR_BA */
 202 typedef struct rpc_hdr_ba_info {
 203         RPC_HDR_BBA bba;
 204
 205         RPC_ADDR_STR addr    ;  /* the secondary address string, as described earlier */
 206         RPC_RESULTS  res     ; /* results and reasons */
 207         struct ndr_syntax_id transfer; /* the transfer syntax from the request */
 208 } RPC_HDR_BA;
 209
 210 #endif /* _DCE_RPC_H */