NetBSD/lib/libc/rpc/clnt_raw.c

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/* $NetBSD: clnt_raw.c,v 1.15 1999/09/16 11:45:22 lukem Exp $ */
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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, MERCHANTIBILITY 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
*/
#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
#if 0
static char *sccsid = "@(#)clnt_raw.c 1.22 87/08/11 Copyr 1984 Sun Micro";
static char *sccsid = "@(#)clnt_raw.c 2.2 88/08/01 4.0 RPCSRC";
#else
__RCSID("$NetBSD: clnt_raw.c,v 1.15 1999/09/16 11:45:22 lukem Exp $");
#endif
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#endif
/*
* clnt_raw.c
*
* Copyright (C) 1984, Sun Microsystems, Inc.
*
* Memory based rpc for simple testing and timing.
* Interface to create an rpc client and server in the same process.
* This lets us similate rpc and get round trip overhead, without
* any interference from the kernal.
*/
#include "namespace.h"
#include <assert.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
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#include <rpc/rpc.h>
#ifdef __weak_alias
__weak_alias(clntraw_create,_clntraw_create);
#endif
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#define MCALL_MSG_SIZE 24
/*
* This is the "network" we will be moving stuff over.
*/
static struct clntraw_private {
CLIENT client_object;
XDR xdr_stream;
char _raw_buf[UDPMSGSIZE];
union {
struct rpc_msg mashl_rpcmsg;
char mashl_callmsg[MCALL_MSG_SIZE];
} u;
u_int mcnt;
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} *clntraw_private;
static enum clnt_stat clntraw_call __P((CLIENT *, u_long, xdrproc_t,
caddr_t, xdrproc_t, caddr_t, struct timeval));
static void clntraw_geterr __P((CLIENT *, struct rpc_err *));
static bool_t clntraw_freeres __P((CLIENT *, xdrproc_t, caddr_t));
static void clntraw_abort __P((CLIENT *));
static bool_t clntraw_control __P((CLIENT *, u_int, char *));
static void clntraw_destroy __P((CLIENT *));
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static const struct clnt_ops client_ops = {
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clntraw_call,
clntraw_abort,
clntraw_geterr,
clntraw_freeres,
clntraw_destroy,
clntraw_control
};
/*
* Create a client handle for memory based rpc.
*/
CLIENT *
clntraw_create(prog, vers)
u_long prog;
u_long vers;
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{
struct clntraw_private *clp = clntraw_private;
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struct rpc_msg call_msg;
XDR *xdrs = &clp->xdr_stream;
CLIENT *client = &clp->client_object;
if (clp == 0) {
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clp = (struct clntraw_private *)calloc(1, sizeof (*clp));
if (clp == 0)
return (0);
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clntraw_private = clp;
}
/*
* pre-serialize the static part of the call msg and stash it away
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*/
call_msg.rm_direction = CALL;
call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
/* XXX: prog and vers have been long historically :-( */
call_msg.rm_call.cb_prog = (u_int32_t)prog;
call_msg.rm_call.cb_vers = (u_int32_t)vers;
xdrmem_create(xdrs, clp->u.mashl_callmsg, MCALL_MSG_SIZE, XDR_ENCODE);
if (! xdr_callhdr(xdrs, &call_msg))
warnx("clntraw_create - Fatal header serialization error.");
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clp->mcnt = XDR_GETPOS(xdrs);
XDR_DESTROY(xdrs);
/*
* Set xdrmem for client/server shared buffer
*/
xdrmem_create(xdrs, clp->_raw_buf, UDPMSGSIZE, XDR_FREE);
/*
* create client handle
*/
client->cl_ops = &client_ops;
client->cl_auth = authnone_create();
return (client);
}
/* ARGSUSED */
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static enum clnt_stat
clntraw_call(h, proc, xargs, argsp, xresults, resultsp, timeout)
CLIENT *h;
u_long proc;
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xdrproc_t xargs;
caddr_t argsp;
xdrproc_t xresults;
caddr_t resultsp;
struct timeval timeout;
{
struct clntraw_private *clp = clntraw_private;
XDR *xdrs = &clp->xdr_stream;
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struct rpc_msg msg;
enum clnt_stat status;
struct rpc_err error;
_DIAGASSERT(h != NULL);
if (clp == 0)
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return (RPC_FAILED);
call_again:
/*
* send request
*/
xdrs->x_op = XDR_ENCODE;
XDR_SETPOS(xdrs, 0);
clp->u.mashl_rpcmsg.rm_xid ++ ;
if ((! XDR_PUTBYTES(xdrs, clp->u.mashl_callmsg, clp->mcnt)) ||
(! XDR_PUTLONG(xdrs, (long *)&proc)) ||
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(! AUTH_MARSHALL(h->cl_auth, xdrs)) ||
(! (*xargs)(xdrs, argsp))) {
return (RPC_CANTENCODEARGS);
}
(void)XDR_GETPOS(xdrs); /* called just to cause overhead */
/*
* We have to call server input routine here because this is
* all going on in one process. Yuk.
*/
svc_getreq(1);
/*
* get results
*/
xdrs->x_op = XDR_DECODE;
XDR_SETPOS(xdrs, 0);
msg.acpted_rply.ar_verf = _null_auth;
msg.acpted_rply.ar_results.where = resultsp;
msg.acpted_rply.ar_results.proc = xresults;
if (! xdr_replymsg(xdrs, &msg)) {
/*
* It's possible for xdr_replymsg() to fail partway
* through its attempt to decode the result from the
* server. If this happens, it will leave the reply
* structure partially populated with dynamically
* allocated memory. (This can happen if someone uses
* clntudp_bufcreate() to create a CLIENT handle and
* specifies a receive buffer size that is too small.)
* This memory must be free()ed to avoid a leak.
*/
int op = xdrs->x_op;
xdrs->x_op = XDR_FREE;
xdr_replymsg(xdrs, &msg);
xdrs->x_op = op;
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return (RPC_CANTDECODERES);
}
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_seterr_reply(&msg, &error);
status = error.re_status;
if (status == RPC_SUCCESS) {
if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) {
status = RPC_AUTHERROR;
}
} /* end successful completion */
else {
if (AUTH_REFRESH(h->cl_auth))
goto call_again;
} /* end of unsuccessful completion */
if (status == RPC_SUCCESS) {
if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) {
status = RPC_AUTHERROR;
}
if (msg.acpted_rply.ar_verf.oa_base != NULL) {
xdrs->x_op = XDR_FREE;
(void)xdr_opaque_auth(xdrs, &(msg.acpted_rply.ar_verf));
}
}
return (status);
}
/*ARGSUSED*/
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static void
clntraw_geterr(cl, err)
CLIENT *cl;
struct rpc_err *err;
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{
}
/* ARGSUSED */
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static bool_t
clntraw_freeres(cl, xdr_res, res_ptr)
CLIENT *cl;
xdrproc_t xdr_res;
caddr_t res_ptr;
{
struct clntraw_private *clp = clntraw_private;
XDR *xdrs = &clp->xdr_stream;
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bool_t rval;
if (clp == 0) {
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rval = (bool_t) RPC_FAILED;
return (rval);
}
xdrs->x_op = XDR_FREE;
return ((*xdr_res)(xdrs, res_ptr));
}
/*ARGSUSED*/
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static void
clntraw_abort(cl)
CLIENT *cl;
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{
}
/*ARGSUSED*/
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static bool_t
clntraw_control(cl, ui, str)
CLIENT *cl;
u_int ui;
char *str;
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{
return (FALSE);
}
/*ARGSUSED*/
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static void
clntraw_destroy(cl)
CLIENT *cl;
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{
}