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/*
Unix SMB/CIFS implementation.
DCERPC client side interface structures
Copyright (C) Tim Potter 2003
Copyright (C) Andrew Tridgell 2003-2005
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
enum dcerpc_transport_t {
NCACN_NP, NCACN_IP_TCP, NCACN_IP_UDP, NCACN_VNS_IPC, NCACN_VNS_SPP,
NCACN_AT_DSP, NCADG_AT_DDP, NCALRPC, NCACN_UNIX_STREAM, NCADG_UNIX_DGRAM,
NCACN_HTTP, NCADG_IPX, NCACN_SPX };
/*
this defines a generic security context for signed/sealed dcerpc pipes.
*/
struct dcerpc_connection;
struct dcerpc_security {
struct dcerpc_auth *auth_info;
struct gensec_security *generic_state;
/* get the session key */
NTSTATUS (*session_key)(struct dcerpc_connection *, DATA_BLOB *);
};
/*
this holds the information that is not specific to a particular rpc context_id
*/
struct dcerpc_connection {
uint32_t call_id;
uint32_t srv_max_xmit_frag;
uint32_t srv_max_recv_frag;
uint_t flags;
struct dcerpc_security security_state;
const char *binding_string;
struct event_context *event_ctx;
struct dcerpc_transport {
enum dcerpc_transport_t transport;
void *private;
NTSTATUS (*shutdown_pipe)(struct dcerpc_connection *);
const char *(*peer_name)(struct dcerpc_connection *);
/* send a request to the server */
NTSTATUS (*send_request)(struct dcerpc_connection *, DATA_BLOB *, BOOL trigger_read);
/* send a read request to the server */
NTSTATUS (*send_read)(struct dcerpc_connection *);
/* a callback to the dcerpc code when a full fragment
has been received */
void (*recv_data)(struct dcerpc_connection *, DATA_BLOB *, NTSTATUS status);
} transport;
/* Requests that have been sent, waiting for a reply */
struct rpc_request *pending;
/* Sync requests waiting to be shipped */
struct rpc_request *request_queue;
/* private pointer for pending binds */
void *bind_private;
/* private pointer for pending alter context requests */
void *alter_private;
/* the next context_id to be assigned */
uint32_t next_context_id;
};
/*
this encapsulates a full dcerpc client side pipe
*/
struct dcerpc_pipe {
uint32_t context_id;
struct dcerpc_syntax_id syntax;
struct dcerpc_syntax_id transfer_syntax;
struct dcerpc_connection *conn;
/* the last fault code from a DCERPC fault */
uint32_t last_fault_code;
/* timeout for individual rpc requests, in seconds */
uint_t request_timeout;
};
/* default timeout for all rpc requests, in seconds */
#define DCERPC_REQUEST_TIMEOUT 60
/* dcerpc pipe flags */
#define DCERPC_DEBUG_PRINT_IN (1<<0)
#define DCERPC_DEBUG_PRINT_OUT (1<<1)
#define DCERPC_DEBUG_PRINT_BOTH (DCERPC_DEBUG_PRINT_IN | DCERPC_DEBUG_PRINT_OUT)
#define DCERPC_DEBUG_VALIDATE_IN (1<<2)
#define DCERPC_DEBUG_VALIDATE_OUT (1<<3)
#define DCERPC_DEBUG_VALIDATE_BOTH (DCERPC_DEBUG_VALIDATE_IN | DCERPC_DEBUG_VALIDATE_OUT)
#define DCERPC_CONNECT (1<<4)
#define DCERPC_SIGN (1<<5)
#define DCERPC_SEAL (1<<6)
#define DCERPC_PUSH_BIGENDIAN (1<<7)
#define DCERPC_PULL_BIGENDIAN (1<<8)
#define DCERPC_SCHANNEL (1<<9)
/* use a 128 bit session key */
#define DCERPC_SCHANNEL_128 (1<<12)
/* check incoming pad bytes */
#define DCERPC_DEBUG_PAD_CHECK (1<<13)
/* set LIBNDR_FLAG_REF_ALLOC flag when decoding NDR */
#define DCERPC_NDR_REF_ALLOC (1<<14)
#define DCERPC_AUTH_OPTIONS (DCERPC_SEAL|DCERPC_SIGN|DCERPC_SCHANNEL|DCERPC_AUTH_SPNEGO|DCERPC_AUTH_KRB5)
/* enable spnego auth */
#define DCERPC_AUTH_SPNEGO (1<<15)
/* enable krb5 auth */
#define DCERPC_AUTH_KRB5 (1<<16)
#define DCERPC_SMB2 (1<<17)
/*
this is used to find pointers to calls
*/
struct dcerpc_interface_call {
const char *name;
size_t struct_size;
ndr_push_flags_fn_t ndr_push;
ndr_pull_flags_fn_t ndr_pull;
ndr_print_function_t ndr_print;
BOOL async;
};
struct dcerpc_endpoint_list {
uint32_t count;
const char * const *names;
};
struct dcerpc_authservice_list {
uint32_t count;
const char * const *names;
};
struct dcerpc_interface_table {
const char *name;
const char *uuid;
uint32_t if_version;
const char *helpstring;
uint32_t num_calls;
const struct dcerpc_interface_call *calls;
const struct dcerpc_endpoint_list *endpoints;
const struct dcerpc_authservice_list *authservices;
};
struct dcerpc_interface_list {
struct dcerpc_interface_list *prev, *next;
const struct dcerpc_interface_table *table;
};
/* this describes a binding to a particular transport/pipe */
struct dcerpc_binding {
enum dcerpc_transport_t transport;
struct GUID object;
uint16_t object_version;
const char *host;
const char *endpoint;
const char *authservice;
const char **options;
uint32_t flags;
};
enum rpc_request_state {
RPC_REQUEST_PENDING,
RPC_REQUEST_DONE
};
/*
handle for an async dcerpc request
*/
struct rpc_request {
struct rpc_request *next, *prev;
struct dcerpc_pipe *p;
NTSTATUS status;
uint32_t call_id;
enum rpc_request_state state;
DATA_BLOB payload;
uint_t flags;
uint32_t fault_code;
const struct GUID *object;
uint16_t opnum;
DATA_BLOB request_data;
BOOL async_call;
/* use by the ndr level async recv call */
struct {
const struct dcerpc_interface_table *table;
uint32_t opnum;
void *struct_ptr;
TALLOC_CTX *mem_ctx;
} ndr;
struct {
void (*callback)(struct rpc_request *);
void *private;
} async;
};
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