/*
 * 
 * (c) Copyright 1989 OPEN SOFTWARE FOUNDATION, INC.
 * (c) Copyright 1989 HEWLETT-PACKARD COMPANY
 * (c) Copyright 1989 DIGITAL EQUIPMENT CORPORATION
 * To anyone who acknowledges that this file is provided "AS IS"
 * without any express or implied warranty:
 *                 permission to use, copy, modify, and distribute this
 * file for any purpose is hereby granted without fee, provided that
 * the above copyright notices and this notice appears in all source
 * code copies, and that none of the names of Open Software
 * Foundation, Inc., Hewlett-Packard Company, or Digital Equipment
 * Corporation be used in advertising or publicity pertaining to
 * distribution of the software without specific, written prior
 * permission.  Neither Open Software Foundation, Inc., Hewlett-
 * Packard Company, nor Digital Equipment Corporation makes any
 * representations about the suitability of this software for any
 * purpose.
 * 
 */
/*
 */
#ifndef _COMFWD_H
#define _COMFWD_H	1
/*
**
**  NAME
**
**      comfwd.h
**
**  FACILITY:
**
**      Remote Procedure Call (RPC) 
**
**  ABSTRACT:
**
**  Private interface to the Common Communications Forwarding Service for use
**  by RPC Protocol Services and Local Location Broker.  This service is
**  in its own file (rather then com.h) so that the llb does not have to
**  include other runtime internal include files.
**
**
*/

#ifndef _DCE_PROTOTYPE_
#include <dce/dce.h>
#endif

/***********************************************************************/
/*
 * The beginning of this file specifies the "public" (visible to the llbd)
 * portion of the fwd interface.
 */

/*
 * The signature of a server forwarding map function.
 *
 * The function determines an appropriate forwarding address for the
 * packet based on the provided info.  The "fwd_action" output parameter
 * determines the disposition of the packet; "drop" means just drop the
 * packet (don't forward, don't send anything back to the client), "reject"
 * means send a rejection back to the client (and drop the packet), and
 * "forward" means that the packet should be forwarded to the address
 * specified in the "fwd_addr" output parameter.
 *
 * WARNING:  This should be a relatively light weight, non-blocking
 * function as the runtime may (will likely) be calling the function
 * from the context of the runtime's listener thread (i.e. handling
 * of additional incoming received packets is suspended while this
 * provided function is executing).
 */

#ifdef __cplusplus
extern "C" {
#endif
   

typedef enum 
{
    rpc_e_fwd_drop,
    rpc_e_fwd_reject,
    rpc_e_fwd_forward,
    rpc_e_fwd_delayed
} rpc_fwd_action_t;

typedef void (*rpc_fwd_map_fn_t) _DCE_PROTOTYPE_ ((
        /* [in] */    uuid_p_t           /*obj_uuid*/,
        /* [in] */    rpc_if_id_p_t      /*if_id*/,
        /* [in] */    rpc_syntax_id_p_t  /*data_rep*/,
        /* [in] */    rpc_protocol_id_t  /*rpc_protocol*/,
        /* [in] */    unsigned32         /*rpc_protocol_vers_major*/,
        /* [in] */    unsigned32         /*rpc_protocol_vers_minor*/,
        /* [in] */    rpc_addr_p_t       /*addr*/,
        /* [in] */    uuid_p_t           /*actuuid*/,
        /* [out] */   rpc_addr_p_t      * /*fwd_addr*/,
        /* [out] */   rpc_fwd_action_t  * /*fwd_action*/,
        /* [out] */   unsigned32        * /*status*/
    ));

/*
 * Register a forwarding map function with the runtime.  This registered
 * function will be called by the protocol services to determine an
 * appropriate forwarding endpoint for a received pkt that is not for
 * any of the server's registered interfaces.
 */
PRIVATE void rpc__server_register_fwd_map _DCE_PROTOTYPE_ ((
        /* [in] */    rpc_fwd_map_fn_t    /*map_fn*/,
        /* [out] */   unsigned32          * /*status*/
    ));

PRIVATE void rpc__server_fwd_resolve_delayed _DCE_PROTOTYPE_ ((
	/* [in] */   uuid_p_t            /*actuuid*/,
        /* [in] */   rpc_addr_p_t        /*fwd_addr*/,
        /* [in] */   rpc_fwd_action_t  * /*fwd_action*/,
        /* [out] */  unsigned32        * /*status*/
    ));

/***********************************************************************/
/*
 * The following are to be considered internal to the runtime.
 */

/*
 * R P C _ G _ F W D _ F N
 *
 * The global forwarding map function variable.  Its value indicates
 * whether or not the RPC runtime should be performing forwarding services
 * and if so, the forwarding map function to use. Its definition is in comp.c.
 */
EXTERNAL rpc_fwd_map_fn_t       rpc_g_fwd_fn;

#endif /* _COMFWD_H_ */