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rpc_msg.hh

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/***************************************************************
* File: rpc_msg.hh
* Purpose: Defines the structs passed between RPC clients and servers
*  as part of CMS.
* Includes:
*         1. struct RPC_READ_REQUEST,  RPC_READ_REPLY, RPC_WRITE_REPLY,
*       RPC_WRITE_REQUEST.
*       2. Function prototypes for functions that XDR encode and decode these
*       structs.
* NOTES:
*  In windows, these XDR functions need to use the Pascal calling convention
* so that the PC-NFS Toolkit DLL can call them.
*****************************************************************/


#ifndef RPC_MSG_HH
#define RPC_MSG_HH

#include "rcs_defs.hh"          /* RCS_EXPORT, RCS_PASCAL, RCS_FAR */

#ifdef VXWORKS
extern "C"
{
#include <rpc/rpctypes.h>       /* needed by xdr.h */
#include <rpc/xdr.h>            /* XDR */
}
#else
extern "C"
{
#include <rpc/types.h>          /* needed by xdr.h */
#include <rpc/xdr.h>            /* XDR */
}
#endif

struct RCS_EXPORT CMS_HEADER;

/* Structure sent by client to server to initiate a read. */
struct RCS_EXPORT RPC_READ_REQUEST
{
  long buffer_number;           /* which buffer should server read */
  int access_type;              /* read or just peek */
  long last_id_read;            /* The server can compare with id from buffer */
  /* to determine if the buffer is new */
  /* to this client */
};

/* Structure returned by server to client after a read. */
struct RCS_EXPORT RPC_READ_REPLY
{
  int status;                   /* Value of CMS::status after attempted read */
  int size;                     /* size of message stored in data. */
  long write_id;                /* Id from the buffer. */
  long was_read;                /* Was this message already read? */
  void RCS_FAR *data;           /* Location of stored message. */
};

/* Structure sent by client to server to initiate a write. */
struct RCS_EXPORT RPC_WRITE_REQUEST
{
  long buffer_number;           /* Which buffer should server write to? */
  int access_type;              /* write or write_if_read */
  int size;                     /* size of message in data */
  void RCS_FAR *data;           /* location of message to write into buffer */
};

/* Structure returned by server to client after a write. */
struct RCS_EXPORT RPC_WRITE_REPLY
{
  int status;                   /* Value of CMS::status after write */
  long was_read;                /* Was the message to be overwriten ever read? */
};

/* Structure sent by client to server to  get the key associated with a user name. */
struct RCS_EXPORT RPC_GET_KEYS_REQUEST
{
  char name[16];
};

/* Structure returned by server to client after a get key. */
struct RCS_EXPORT RPC_GET_KEYS_REPLY
{
  int status;                   /* Value of CMS::status after get key */
  char key1[8];
  char key2[8];
};

/* Structure sent by client to server to set the access priveledges for this user. */
struct RCS_EXPORT RPC_LOGIN_REQUEST
{
  char name[16];
  char passwd[16];
};

/* Structure returned by server to client after a get key. */
struct RCS_EXPORT RPC_LOGIN_REPLY
{
  int status;                   /* Value of CMS::status after get key */
};



extern "C"
{
  extern bool_t RCS_EXPORT RCS_PASCAL
    xdr_RPC_READ_REQUEST (XDR RCS_FAR * xdrsp,
                          RPC_READ_REQUEST RCS_FAR * buffer);
  extern bool_t RCS_EXPORT RCS_PASCAL
    xdr_RPC_READ_REPLY (XDR RCS_FAR * xdrsp, RPC_READ_REPLY RCS_FAR * buffer);
  extern bool_t RCS_EXPORT RCS_PASCAL
    xdr_RPC_WRITE_REQUEST (XDR RCS_FAR * xdrsp,
                           RPC_WRITE_REQUEST RCS_FAR * buffer);
  extern bool_t RCS_EXPORT RCS_PASCAL
    xdr_RPC_WRITE_REPLY (XDR RCS_FAR * xdrsp,
                         RPC_WRITE_REPLY RCS_FAR * buffer);
  extern bool_t RCS_EXPORT RCS_PASCAL
    xdr_RPC_GET_KEYS_REQUEST (XDR RCS_FAR * xdrsp,
                              RPC_GET_KEYS_REQUEST RCS_FAR * buffer);
  extern bool_t RCS_EXPORT RCS_PASCAL
    xdr_RPC_GET_KEYS_REPLY (XDR RCS_FAR * xdrsp,
                            RPC_GET_KEYS_REPLY RCS_FAR * buffer);
  extern bool_t RCS_EXPORT RCS_PASCAL
    xdr_RPC_LOGIN_REQUEST (XDR RCS_FAR * xdrsp,
                           RPC_LOGIN_REQUEST RCS_FAR * buffer);
  extern bool_t RCS_EXPORT RCS_PASCAL
    xdr_RPC_LOGIN_REPLY (XDR RCS_FAR * xdrsp,
                         RPC_LOGIN_REPLY RCS_FAR * buffer);

}

#endif

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