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/*
Unix SMB/CIFS implementation.
server side dcerpc defines
Copyright (C) Andrew Tridgell 2003-2005
Copyright (C) Stefan (metze) Metzmacher 2004-2005
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.
*/
#ifndef SAMBA_DCERPC_SERVER_H
#define SAMBA_DCERPC_SERVER_H
/* modules can use the following to determine if the interface has changed
* please increment the version number after each interface change
* with a comment and maybe update struct dcesrv_critical_sizes.
*/
/* version 1 - initial version - metze */
#define DCERPC_MODULE_VERSION 1
struct dcesrv_connection;
struct dcesrv_call_state;
struct dcesrv_auth;
struct dcesrv_interface {
const char *name;
struct GUID uuid;
uint32_t if_version;
/* this function is called when the client binds to this interface */
NTSTATUS (*bind)(struct dcesrv_call_state *, const struct dcesrv_interface *);
/* this function is called when the client disconnects the endpoint */
void (*unbind)(struct dcesrv_connection_context *, const struct dcesrv_interface *);
/* the ndr_pull function for the chosen interface.
*/
NTSTATUS (*ndr_pull)(struct dcesrv_call_state *, TALLOC_CTX *, struct ndr_pull *, void **);
/* the dispatch function for the chosen interface.
*/
NTSTATUS (*dispatch)(struct dcesrv_call_state *, TALLOC_CTX *, void *);
/* the reply function for the chosen interface.
*/
NTSTATUS (*reply)(struct dcesrv_call_state *, TALLOC_CTX *, void *);
/* the ndr_push function for the chosen interface.
*/
NTSTATUS (*ndr_push)(struct dcesrv_call_state *, TALLOC_CTX *, struct ndr_push *, const void *);
/* for any private use by the interface code */
const void *private;
};
/* the state of an ongoing dcerpc call */
struct dcesrv_call_state {
struct dcesrv_call_state *next, *prev;
struct dcesrv_connection *conn;
struct dcesrv_connection_context *context;
struct ncacn_packet pkt;
/* the backend can mark the call
* with DCESRV_CALL_STATE_FLAG_ASYNC
* that will cause the frontend to not touch r->out
* and skip the reply
*
* this is only allowed to the backend when DCESRV_CALL_STATE_FLAG_MAY_ASYNC
* is alerady set by the frontend
*
* the backend then needs to call dcesrv_reply() when it's
* ready to send the reply
*/
#define DCESRV_CALL_STATE_FLAG_ASYNC (1<<0)
#define DCESRV_CALL_STATE_FLAG_MAY_ASYNC (1<<1)
uint32_t state_flags;
/* the time the request arrived in the server */
struct timeval time;
/* the backend can use this event context for async replies */
struct event_context *event_ctx;
/* this is the pointer to the allocated function struct */
void *r;
/* that's the ndr push context used in dcesrv_request */
struct ndr_pull *ndr_pull;
DATA_BLOB input;
struct data_blob_list_item *replies;
/* this is used by the boilerplate code to generate DCERPC faults */
uint32_t fault_code;
};
#define DCESRV_HANDLE_ANY 255
/* a dcerpc handle in internal format */
struct dcesrv_handle {
struct dcesrv_handle *next, *prev;
struct dcesrv_connection_context *context;
struct policy_handle wire_handle;
void *data;
};
/* hold the authentication state information */
struct dcesrv_auth {
struct dcerpc_auth *auth_info;
struct gensec_security *gensec_security;
struct auth_session_info *session_info;
NTSTATUS (*session_key)(struct dcesrv_connection *, DATA_BLOB *session_key);
};
struct dcesrv_connection_context {
struct dcesrv_connection_context *next, *prev;
uint32_t context_id;
/* the connection this is on */
struct dcesrv_connection *conn;
/* the ndr function table for the chosen interface */
const struct dcesrv_interface *iface;
/* private data for the interface implementation */
void *private;
/* current rpc handles - this is really the wrong scope for
them, but it will do for now */
struct dcesrv_handle *handles;
};
/* the state associated with a dcerpc server connection */
struct dcesrv_connection {
/* the top level context for this server */
struct dcesrv_context *dce_ctx;
/* the endpoint that was opened */
const struct dcesrv_endpoint *endpoint;
/* a list of established context_ids */
struct dcesrv_connection_context *contexts;
/* the state of the current calls */
struct dcesrv_call_state *call_list;
/* the state of the async pending calls */
struct dcesrv_call_state *pending_call_list;
/* the maximum size the client wants to receive */
uint32_t cli_max_recv_frag;
DATA_BLOB partial_input;
/* the current authentication state */
struct dcesrv_auth auth_state;
struct stream_connection *srv_conn;
/* the transport level session key */
DATA_BLOB transport_session_key;
BOOL processing;
};
struct dcesrv_endpoint_server {
/* this is the name of the endpoint server */
const char *name;
/* this function should register endpoints and some other setup stuff,
* it is called when the dcesrv_context gets initialized.
*/
NTSTATUS (*init_server)(struct dcesrv_context *, const struct dcesrv_endpoint_server *);
/* this function can be used by other endpoint servers to
* ask for a dcesrv_interface implementation
* - iface must be reference to an already existing struct !
*/
BOOL (*interface_by_uuid)(struct dcesrv_interface *iface, const struct GUID *, uint32_t);
/* this function can be used by other endpoint servers to
* ask for a dcesrv_interface implementation
* - iface must be reference to an already existeng struct !
*/
BOOL (*interface_by_name)(struct dcesrv_interface *iface, const char *);
};
/* server-wide context information for the dcerpc server */
struct dcesrv_context {
/* the list of endpoints that have registered
* by the configured endpoint servers
*/
struct dcesrv_endpoint {
struct dcesrv_endpoint *next, *prev;
/* the type and location of the endpoint */
struct dcerpc_binding *ep_description;
/* the security descriptor for smb named pipes */
struct security_descriptor *sd;
/* the list of interfaces available on this endpoint */
struct dcesrv_if_list {
struct dcesrv_if_list *next, *prev;
struct dcesrv_interface iface;
} *interface_list;
} *endpoint_list;
/* this is the default state_flags for dcesrv_call_state structs */
uint32_t state_flags;
};
/* this structure is used by modules to determine the size of some critical types */
struct dcesrv_critical_sizes {
int interface_version;
int sizeof_dcesrv_context;
int sizeof_dcesrv_endpoint;
int sizeof_dcesrv_endpoint_server;
int sizeof_dcesrv_interface;
int sizeof_dcesrv_if_list;
int sizeof_dcesrv_connection;
int sizeof_dcesrv_call_state;
int sizeof_dcesrv_auth;
int sizeof_dcesrv_handle;
};
#endif /* SAMBA_DCERPC_SERVER_H */
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