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/*
Unix SMB/CIFS implementation.
SMB parameters and setup
Copyright (C) Andrew Tridgell 1992-1997
Copyright (C) Luke Kenneth Casson Leighton 1996-1997
Copyright (C) Paul Ashton 1997
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _DCE_RPC_H /* _DCE_RPC_H */
#define _DCE_RPC_H
/* DCE/RPC packet types */
enum RPC_PKT_TYPE {
RPC_REQUEST = 0x00, /* Ordinary request. */
RPC_PING = 0x01, /* Connectionless is server alive ? */
RPC_RESPONSE = 0x02, /* Ordinary reply. */
RPC_FAULT = 0x03, /* Fault in processing of call. */
RPC_WORKING = 0x04, /* Connectionless reply to a ping when server busy. */
RPC_NOCALL = 0x05, /* Connectionless reply to a ping when server has lost part of clients call. */
RPC_REJECT = 0x06, /* Refuse a request with a code. */
RPC_ACK = 0x07, /* Connectionless client to server code. */
RPC_CL_CANCEL= 0x08, /* Connectionless cancel. */
RPC_FACK = 0x09, /* Connectionless fragment ack. Both client and server send. */
RPC_CANCEL_ACK = 0x0A, /* Server ACK to client cancel request. */
RPC_BIND = 0x0B, /* Bind to interface. */
RPC_BINDACK = 0x0C, /* Server ack of bind. */
RPC_BINDNACK = 0x0D, /* Server nack of bind. */
RPC_ALTCONT = 0x0E, /* Alter auth. */
RPC_ALTCONTRESP = 0x0F, /* Reply to alter auth. */
RPC_AUTH3 = 0x10, /* not the real name! this is undocumented! */
RPC_SHUTDOWN = 0x11, /* Server to client request to shutdown. */
RPC_CO_CANCEL= 0x12, /* Connection-oriented cancel request. */
RPC_ORPHANED = 0x13 /* Client telling server it's aborting a partially sent request or telling
server to stop sending replies. */
};
/* DCE/RPC flags */
#define RPC_FLG_FIRST 0x01
#define RPC_FLG_LAST 0x02
#define RPC_FLG_NOCALL 0x20
#define SMBD_NTLMSSP_NEG_FLAGS 0x000082b1 /* ALWAYS_SIGN|NEG_NTLM|NEG_LM|NEG_SEAL|NEG_SIGN|NEG_UNICODE */
/* DCE RPC auth types - extended by Microsoft. */
#define RPC_ANONYMOUS_AUTH_TYPE 0
#define RPC_AUTH_TYPE_KRB5_1 1
#define RPC_SPNEGO_AUTH_TYPE 9
#define RPC_NTLMSSP_AUTH_TYPE 10
#define RPC_KRB5_AUTH_TYPE 16 /* Not yet implemented. */
#define RPC_SCHANNEL_AUTH_TYPE 68 /* 0x44 */
/* DCE-RPC standard identifiers to indicate
signing or sealing of an RPC pipe */
#define RPC_AUTH_LEVEL_NONE 1
#define RPC_AUTH_LEVEL_CONNECT 2
#define RPC_AUTH_LEVEL_CALL 3
#define RPC_AUTH_LEVEL_PACKET 4
#define RPC_AUTH_LEVEL_INTEGRITY 5
#define RPC_AUTH_LEVEL_PRIVACY 6
#if 0
#define RPC_PIPE_AUTH_SIGN_LEVEL 0x5
#define RPC_PIPE_AUTH_SEAL_LEVEL 0x6
#endif
/* Netlogon schannel auth type and level */
#define SCHANNEL_SIGN_SIGNATURE { 0x77, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00 }
#define SCHANNEL_SEAL_SIGNATURE { 0x77, 0x00, 0x7a, 0x00, 0xff, 0xff, 0x00, 0x00 }
#define RPC_AUTH_SCHANNEL_SIGN_OR_SEAL_CHK_LEN 0x20
#define RPC_AUTH_SCHANNEL_SIGN_ONLY_CHK_LEN 0x18
enum schannel_direction {
SENDER_IS_INITIATOR,
SENDER_IS_ACCEPTOR
};
/* Maximum size of the signing data in a fragment. */
#define RPC_MAX_SIGN_SIZE 0x38 /* 56 */
/* Maximum PDU fragment size. */
/* #define MAX_PDU_FRAG_LEN 0x1630 this is what wnt sets */
#define RPC_MAX_PDU_FRAG_LEN 0x10b8 /* this is what w2k sets */
#define RPC_IFACE_LEN (UUID_SIZE + 4)
/* RPC_HDR - dce rpc header */
typedef struct rpc_hdr_info {
uint8 major; /* 5 - RPC major version */
uint8 minor; /* 0 - RPC minor version */
uint8 pkt_type; /* RPC_PKT_TYPE - RPC response packet */
uint8 flags; /* DCE/RPC flags */
uint8 pack_type[4]; /* 0x1000 0000 - little-endian packed data representation */
uint16 frag_len; /* fragment length - data size (bytes) inc header and tail. */
uint16 auth_len; /* 0 - authentication length */
uint32 call_id; /* call identifier. matches 12th uint32 of incoming RPC data. */
} RPC_HDR;
#define RPC_HEADER_LEN 16
/* RPC_HDR_REQ - ms request rpc header */
typedef struct rpc_hdr_req_info {
uint32 alloc_hint; /* allocation hint - data size (bytes) minus header and tail. */
uint16 context_id; /* presentation context identifier */
uint16 opnum; /* opnum */
} RPC_HDR_REQ;
#define RPC_HDR_REQ_LEN 8
/* RPC_HDR_RESP - ms response rpc header */
typedef struct rpc_hdr_resp_info {
uint32 alloc_hint; /* allocation hint - data size (bytes) minus header and tail. */
uint16 context_id; /* 0 - presentation context identifier */
uint8 cancel_count; /* 0 - cancel count */
uint8 reserved; /* 0 - reserved. */
} RPC_HDR_RESP;
#define RPC_HDR_RESP_LEN 8
/* RPC_HDR_FAULT - fault rpc header */
typedef struct rpc_hdr_fault_info {
NTSTATUS status;
uint32 reserved; /* 0x0000 0000 */
} RPC_HDR_FAULT;
#define RPC_HDR_FAULT_LEN 8
/* this seems to be the same string name depending on the name of the pipe,
* but is more likely to be linked to the interface name
* "srvsvc", "\\PIPE\\ntsvcs"
* "samr", "\\PIPE\\lsass"
* "wkssvc", "\\PIPE\\wksvcs"
* "NETLOGON", "\\PIPE\\NETLOGON"
*/
/* RPC_ADDR_STR */
typedef struct rpc_addr_info {
uint16 len; /* length of the string including null terminator */
fstring str; /* the string above in single byte, null terminated form */
} RPC_ADDR_STR;
/* RPC_HDR_BBA - bind acknowledge, and alter context response. */
typedef struct rpc_hdr_bba_info {
uint16 max_tsize; /* maximum transmission fragment size (0x1630) */
uint16 max_rsize; /* max receive fragment size (0x1630) */
uint32 assoc_gid; /* associated group id (0x0) */
} RPC_HDR_BBA;
#define RPC_HDR_BBA_LEN 8
/* RPC_HDR_AUTH */
typedef struct rpc_hdr_auth_info {
uint8 auth_type; /* See XXX_AUTH_TYPE above. */
uint8 auth_level; /* See RPC_PIPE_AUTH_XXX_LEVEL above. */
uint8 auth_pad_len;
uint8 auth_reserved;
uint32 auth_context_id;
} RPC_HDR_AUTH;
#define RPC_HDR_AUTH_LEN 8
/* attached to the end of encrypted rpc requests and responses */
/* RPC_AUTH_SCHANNEL_CHK */
typedef struct rpc_auth_schannel_chk_info {
uint8 sig [8]; /* 77 00 7a 00 ff ff 00 00 */
uint8 packet_digest[8]; /* checksum over the packet, MD5'ed with session key */
uint8 seq_num[8]; /* verifier, seq num */
uint8 confounder[8]; /* random 8-byte nonce */
} RPC_AUTH_SCHANNEL_CHK;
typedef struct rpc_context {
uint16 context_id; /* presentation context identifier. */
uint8 num_transfer_syntaxes; /* the number of syntaxes */
struct ndr_syntax_id abstract; /* num and vers. of interface client is using */
struct ndr_syntax_id *transfer; /* Array of transfer interfaces. */
} RPC_CONTEXT;
/* RPC_BIND_REQ - ms req bind */
typedef struct rpc_bind_req_info {
RPC_HDR_BBA bba;
uint8 num_contexts; /* the number of contexts */
RPC_CONTEXT *rpc_context;
} RPC_HDR_RB;
/*
* The following length is 8 bytes RPC_HDR_BBA_LEN +
* 4 bytes size of context count +
* (context_count * (4 bytes of context_id, size of transfer syntax count + RPC_IFACE_LEN bytes +
* (transfer_syntax_count * RPC_IFACE_LEN bytes)))
*/
#define RPC_HDR_RB_LEN(rpc_hdr_rb) (RPC_HDR_BBA_LEN + 4 + \
((rpc_hdr_rb)->num_contexts) * (4 + RPC_IFACE_LEN + (((rpc_hdr_rb)->rpc_context->num_transfer_syntaxes)*RPC_IFACE_LEN)))
/* RPC_RESULTS - can only cope with one reason, right now... */
typedef struct rpc_results_info {
/* uint8[] # 4-byte alignment padding, against SMB header */
uint8 num_results; /* the number of results (0x01) */
/* uint8[] # 4-byte alignment padding, against SMB header */
uint16 result; /* result (0x00 = accept) */
uint16 reason; /* reason (0x00 = no reason specified) */
} RPC_RESULTS;
/* RPC_HDR_BA */
typedef struct rpc_hdr_ba_info {
RPC_HDR_BBA bba;
RPC_ADDR_STR addr ; /* the secondary address string, as described earlier */
RPC_RESULTS res ; /* results and reasons */
struct ndr_syntax_id transfer; /* the transfer syntax from the request */
} RPC_HDR_BA;
#endif /* _DCE_RPC_H */
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