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/*

 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for

 * unrestricted use provided that this legend is included on all tape

 * media and as a part of the software program in whole or part.  Users

 * may copy or modify Sun RPC without charge, but are not authorized

 * to license or distribute it to anyone else except as part of a product or

 * program developed by the user.

 *

 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE

 * WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.

 *

 * Sun RPC is provided with no support and without any obligation on the

 * part of Sun Microsystems, Inc. to assist in its use, correction,

 * modification or enhancement.

 *

 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE

 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC

 * OR ANY PART THEREOF.

 *

 * In no event will Sun Microsystems, Inc. be liable for any lost revenue

 * or profits or other special, indirect and consequential damages, even if

 * Sun has been advised of the possibility of such damages.

 *

 * Sun Microsystems, Inc.

 * 2550 Garcia Avenue

 * Mountain View, California  94043

 *

 *      from: @(#)clnt.h 1.31 88/02/08 SMI

 *      from: @(#)clnt.h        2.1 88/07/29 4.0 RPCSRC

 * $FreeBSD: src/include/rpc/clnt.h,v 1.11 1999/08/27 23:45:03 peter Exp $

 */

/*

 * clnt.h - Client side remote procedure call interface.

 *

 * Copyright (C) 1984, Sun Microsystems, Inc.

 */

#ifndef _RPC_CLNT_H_

#define _RPC_CLNT_H_

#include <sys/cdefs.h>

#include <sys/un.h>

/*

 * Rpc calls return an enum clnt_stat.  This should be looked at more,

 * since each implementation is required to live with this (implementation

 * independent) list of errors.

 */

enum clnt_stat {

        RPC_SUCCESS=0,                   /* call succeeded */

        /*

         * local errors

         */

        RPC_CANTENCODEARGS=1,           /* can't encode arguments */

        RPC_CANTDECODERES=2,            /* can't decode results */

        RPC_CANTSEND=3,                 /* failure in sending call */

        RPC_CANTRECV=4,                 /* failure in receiving result */

        RPC_TIMEDOUT=5,                 /* call timed out */

        /*

         * remote errors

         */

        RPC_VERSMISMATCH=6,             /* rpc versions not compatible */

        RPC_AUTHERROR=7,                /* authentication error */

        RPC_PROGUNAVAIL=8,              /* program not available */

        RPC_PROGVERSMISMATCH=9,         /* program version mismatched */

        RPC_PROCUNAVAIL=10,             /* procedure unavailable */

        RPC_CANTDECODEARGS=11,          /* decode arguments error */

        RPC_SYSTEMERROR=12,             /* generic "other problem" */

        /*

         * callrpc & clnt_create errors

         */

        RPC_UNKNOWNHOST=13,             /* unknown host name */

        RPC_UNKNOWNPROTO=17,            /* unkown protocol */

        /*

         * _ create errors

         */

        RPC_PMAPFAILURE=14,             /* the pmapper failed in its call */

        RPC_PROGNOTREGISTERED=15,       /* remote program is not registered */

        /*

         * unspecified error

         */

        RPC_FAILED=16

};

/*

 * Error info.

 */

struct rpc_err {

        enum clnt_stat re_status;

        union {

                int RE_errno;           /* related system error */

                enum auth_stat RE_why;  /* why the auth error occurred */

                struct {

                        u_int32_t low;  /* lowest verion supported */

                        u_int32_t high; /* highest verion supported */

                } RE_vers;

                struct {                /* maybe meaningful if RPC_FAILED */

                        int32_t s1;

                        int32_t s2;

                } RE_lb;                /* life boot & debugging only */

        } ru;

#define re_errno        ru.RE_errno

#define re_why          ru.RE_why

#define re_vers         ru.RE_vers

#define re_lb           ru.RE_lb

};

/*

 * Client rpc handle.

 * Created by individual implementations, see e.g. rpc_udp.c.

 * Client is responsible for initializing auth, see e.g. auth_none.c.

 */

typedef struct __rpc_client {

        AUTH    *cl_auth;                       /* authenticator */

        struct clnt_ops {

                /* call remote procedure */

                enum clnt_stat  (*cl_call) __P((struct __rpc_client *,

                                        u_long, xdrproc_t, caddr_t, xdrproc_t,

                                        caddr_t, struct timeval));

                /* abort a call */

                void            (*cl_abort) __P((struct __rpc_client *));

                /* get specific error code */

                void            (*cl_geterr) __P((struct __rpc_client *,

                                        struct rpc_err *));

                /* frees results */

                bool_t          (*cl_freeres) __P((struct __rpc_client *,

                                        xdrproc_t, caddr_t));

                /* destroy this structure */

                void            (*cl_destroy) __P((struct __rpc_client *));

                /* the ioctl() of rpc */

                bool_t          (*cl_control) __P((struct __rpc_client *, u_int,

                                        void *));

        } *cl_ops;

        caddr_t                 cl_private;     /* private stuff */

} CLIENT;

/*

 * client side rpc interface ops

 *

 * Parameter types are:

 *

 */

/*

 * enum clnt_stat

 * CLNT_CALL(rh, proc, xargs, argsp, xres, resp, timeout)

 *      CLIENT *rh;

 *      u_long proc;

 *      xdrproc_t xargs;

 *      caddr_t argsp;

 *      xdrproc_t xres;

 *      caddr_t resp;

 *      struct timeval timeout;

 */

#define CLNT_CALL(rh, proc, xargs, argsp, xres, resp, secs)     \

        ((*(rh)->cl_ops->cl_call)(rh, proc, xargs, (caddr_t)argsp, \

                xres, (caddr_t)resp, secs))

#define clnt_call(rh, proc, xargs, argsp, xres, resp, secs)     \

        ((*(rh)->cl_ops->cl_call)(rh, proc, xargs, (caddr_t)argsp, \

                xres, (caddr_t)resp, secs))

/*

 * void

 * CLNT_ABORT(rh);

 *      CLIENT *rh;

 */

#define CLNT_ABORT(rh)  ((*(rh)->cl_ops->cl_abort)(rh))

#define clnt_abort(rh)  ((*(rh)->cl_ops->cl_abort)(rh))

/*

 * struct rpc_err

 * CLNT_GETERR(rh);

 *      CLIENT *rh;

 */

#define CLNT_GETERR(rh,errp)    ((*(rh)->cl_ops->cl_geterr)(rh, errp))

#define clnt_geterr(rh,errp)    ((*(rh)->cl_ops->cl_geterr)(rh, errp))

/*

 * bool_t

 * CLNT_FREERES(rh, xres, resp);

 *      CLIENT *rh;

 *      xdrproc_t xres;

 *      caddr_t resp;

 */

#define CLNT_FREERES(rh,xres,resp) ((*(rh)->cl_ops->cl_freeres)(rh,xres,resp))

#define clnt_freeres(rh,xres,resp) ((*(rh)->cl_ops->cl_freeres)(rh,xres,resp))

/*

 * bool_t

 * CLNT_CONTROL(cl, request, info)

 *      CLIENT *cl;

 *      u_int request;

 *      char *info;

 */

#define CLNT_CONTROL(cl,rq,in) ((*(cl)->cl_ops->cl_control)(cl,rq,in))

#define clnt_control(cl,rq,in) ((*(cl)->cl_ops->cl_control)(cl,rq,in))

/*

 * control operations that apply to udp, tcp and unix transports

 *

 * Note: options marked XXX are no-ops in this implementation of RPC.

 * The are present in TI-RPC but can't be implemented here since they

 * depend on the presence of STREAMS/TLI, which we don't have.

 *

 */

#define CLSET_TIMEOUT       1   /* set timeout (timeval) */

#define CLGET_TIMEOUT       2   /* get timeout (timeval) */

#define CLGET_SERVER_ADDR   3   /* get server's address (sockaddr) */

#define CLGET_FD            6   /* get connections file descriptor */

#define CLGET_SVC_ADDR      7   /* get server's address (netbuf)         XXX */

#define CLSET_FD_CLOSE      8   /* close fd while clnt_destroy */

#define CLSET_FD_NCLOSE     9   /* Do not close fd while clnt_destroy */

#define CLGET_XID           10  /* Get xid */

#define CLSET_XID           11  /* Set xid */

#define CLGET_VERS          12  /* Get version number */

#define CLSET_VERS          13  /* Set version number */

#define CLGET_PROG          14  /* Get program number */

#define CLSET_PROG          15  /* Set program number */

#define CLSET_SVC_ADDR      16  /* get server's address (netbuf)         XXX */

#define CLSET_PUSH_TIMOD    17  /* push timod if not already present     XXX */

#define CLSET_POP_TIMOD     18  /* pop timod                             XXX */

/*

 * udp only control operations

 */

#define CLSET_RETRY_TIMEOUT 4   /* set retry timeout (timeval) */

#define CLGET_RETRY_TIMEOUT 5   /* get retry timeout (timeval) */

/*

 * Operations which GSSAPI needs. (Bletch.)

 */

#define CLGET_LOCAL_ADDR    19  /* get local addr (sockaddr) */

/*

 * void

 * CLNT_DESTROY(rh);

 *      CLIENT *rh;

 */

#define CLNT_DESTROY(rh)        ((*(rh)->cl_ops->cl_destroy)(rh))

#define clnt_destroy(rh)        ((*(rh)->cl_ops->cl_destroy)(rh))

/*

 * RPCTEST is a test program which is accessible on every rpc

 * transport/port.  It is used for testing, performance evaluation,

 * and network administration.

 */

#define RPCTEST_PROGRAM         ((u_long)1)

#define RPCTEST_VERSION         ((u_long)1)

#define RPCTEST_NULL_PROC       ((u_long)2)

#define RPCTEST_NULL_BATCH_PROC ((u_long)3)

/*

 * By convention, procedure 0 takes null arguments and returns them

 */

#define NULLPROC ((u_long)0)

/*

 * Below are the client handle creation routines for the various

 * implementations of client side rpc.  They can return NULL if a

 * creation failure occurs.

 */

/*

 * Memory based rpc (for speed check and testing)

 * CLIENT *

 * clntraw_create(prog, vers)

 *      u_long prog;

 *      u_long vers;

 */

__BEGIN_DECLS

extern CLIENT *clntraw_create   __P((u_long, u_long));

__END_DECLS

/*

 * Generic client creation routine. Supported protocols are "udp", "tcp"

 * and "unix".

 * CLIENT *

 * clnt_create(host, prog, vers, prot);

 *      char *host;     -- hostname

 *      u_long prog;    -- program number

 *      u_long vers;    -- version number

 *      char *prot;     -- protocol

 */

__BEGIN_DECLS

extern CLIENT *clnt_create      __P((char *, u_long, u_long, char *));

__END_DECLS

/*

 * TCP based rpc

 * CLIENT *

 * clnttcp_create(raddr, prog, vers, sockp, sendsz, recvsz)

 *      struct sockaddr_in *raddr;

 *      u_long prog;

 *      u_long version;

 *      register int *sockp;

 *      u_int sendsz;

 *      u_int recvsz;

 */

__BEGIN_DECLS

extern CLIENT *clnttcp_create   __P((struct sockaddr_in *,

                                     u_long,

                                     u_long,

                                     int *,

                                     u_int,

                                     u_int));

__END_DECLS

/*

 * UDP based rpc.

 * CLIENT *

 * clntudp_create(raddr, program, version, wait, sockp)

 *      struct sockaddr_in *raddr;

 *      u_long program;

 *      u_long version;

 *      struct timeval wait;

 *      int *sockp;

 *

 * Same as above, but you specify max packet sizes.

 * CLIENT *

 * clntudp_bufcreate(raddr, program, version, wait, sockp, sendsz, recvsz)

 *      struct sockaddr_in *raddr;

 *      u_long program;

 *      u_long version;

 *      struct timeval wait;

 *      int *sockp;

 *      u_int sendsz;

 *      u_int recvsz;

 */

__BEGIN_DECLS

extern CLIENT *clntudp_create   __P((struct sockaddr_in *,

                                     u_long,

                                     u_long,

                                     struct timeval,

                                     int *));

extern CLIENT *clntudp_bufcreate __P((struct sockaddr_in *,

                                     u_long,

                                     u_long,

                                     struct timeval,

                                     int *,

                                     u_int,

                                     u_int));

__END_DECLS

/*

 * AF_UNIX based rpc

 * CLIENT *

 * clntunix_create(raddr, prog, vers, sockp, sendsz, recvsz)

 *      struct sockaddr_un *raddr;

 *      u_long prog;

 *      u_long version;

 *      register int *sockp;

 *      u_int sendsz;

 *      u_int recvsz;

 */

__BEGIN_DECLS

extern CLIENT *clntunix_create  __P((struct sockaddr_un *,

                                     u_long,

                                     u_long,

                                     int *,

                                     u_int,

                                     u_int));

__END_DECLS

/*

 * Print why creation failed

 */

__BEGIN_DECLS

extern void clnt_pcreateerror   __P((char *));                  /* stderr */

extern char *clnt_spcreateerror __P((char *));                  /* string */

__END_DECLS

/*

 * Like clnt_perror(), but is more verbose in its output

 */

__BEGIN_DECLS

extern void clnt_perrno         __P((enum clnt_stat));          /* stderr */

extern char *clnt_sperrno       __P((enum clnt_stat));          /* string */

__END_DECLS

/*

 * Print an English error message, given the client error code

 */

__BEGIN_DECLS

extern void clnt_perror         __P((CLIENT *, char *));        /* stderr */

extern char *clnt_sperror       __P((CLIENT *, char *));        /* string */

__END_DECLS

/*

 * If a creation fails, the following allows the user to figure out why.

 */

struct rpc_createerr {

        enum clnt_stat cf_stat;

        struct rpc_err cf_error; /* useful when cf_stat == RPC_PMAPFAILURE */

};

extern struct rpc_createerr rpc_createerr;

#define UDPMSGSIZE      8800    /* rpc imposed limit on udp msg size */

#define RPCSMALLMSGSIZE 400     /* a more reasonable packet size */

#endif /* !_RPC_CLNT_H */