326 lines
8.0 KiB
C
326 lines
8.0 KiB
C
/* $NetBSD: clnt_raw.c,v 1.28 2005/12/03 15:16:19 yamt Exp $ */
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/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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static char *sccsid = "@(#)clnt_raw.c 1.22 87/08/11 Copyr 1984 Sun Micro";
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static char *sccsid = "@(#)clnt_raw.c 2.2 88/08/01 4.0 RPCSRC";
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#else
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__RCSID("$NetBSD: clnt_raw.c,v 1.28 2005/12/03 15:16:19 yamt Exp $");
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#endif
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#endif
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/*
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* clnt_raw.c
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*
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* Copyright (C) 1984, Sun Microsystems, Inc.
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*
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* Memory based rpc for simple testing and timing.
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* Interface to create an rpc client and server in the same process.
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* This lets us similate rpc and get round trip overhead, without
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* any interference from the kernel.
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*/
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#include "namespace.h"
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#include "reentrant.h"
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#include <assert.h>
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <rpc/rpc.h>
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#include <rpc/raw.h>
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#ifdef __weak_alias
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__weak_alias(clntraw_create,_clntraw_create)
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__weak_alias(clnt_raw_create,_clnt_raw_create)
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#endif
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#ifdef _REENTRANT
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extern mutex_t clntraw_lock;
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#endif
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#define MCALL_MSG_SIZE 24
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/*
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* This is the "network" we will be moving stuff over.
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*/
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static struct clntraw_private {
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CLIENT client_object;
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XDR xdr_stream;
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char *_raw_buf;
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union {
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struct rpc_msg mashl_rpcmsg;
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char mashl_callmsg[MCALL_MSG_SIZE];
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} u;
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u_int mcnt;
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} *clntraw_private;
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static enum clnt_stat clnt_raw_call __P((CLIENT *, rpcproc_t, xdrproc_t,
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const char *, xdrproc_t, caddr_t, struct timeval));
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static void clnt_raw_geterr __P((CLIENT *, struct rpc_err *));
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static bool_t clnt_raw_freeres __P((CLIENT *, xdrproc_t, caddr_t));
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static void clnt_raw_abort __P((CLIENT *));
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static bool_t clnt_raw_control __P((CLIENT *, u_int, char *));
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static void clnt_raw_destroy __P((CLIENT *));
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static struct clnt_ops *clnt_raw_ops __P((void));
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/*
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* Create a client handle for memory based rpc.
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*/
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CLIENT *
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clnt_raw_create(prog, vers)
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rpcprog_t prog;
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rpcvers_t vers;
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{
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struct clntraw_private *clp = clntraw_private;
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struct rpc_msg call_msg;
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XDR *xdrs = &clp->xdr_stream;
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CLIENT *client = &clp->client_object;
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mutex_lock(&clntraw_lock);
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if (clp == NULL) {
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clp = calloc((size_t)1, sizeof (*clp));
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if (clp == NULL) {
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mutex_unlock(&clntraw_lock);
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return NULL;
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}
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if (__rpc_rawcombuf == NULL)
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__rpc_rawcombuf =
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malloc(UDPMSGSIZE);
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clp->_raw_buf = __rpc_rawcombuf;
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clntraw_private = clp;
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}
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/*
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* pre-serialize the static part of the call msg and stash it away
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*/
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call_msg.rm_direction = CALL;
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call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
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/* XXX: prog and vers have been long historically :-( */
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call_msg.rm_call.cb_prog = (u_int32_t)prog;
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call_msg.rm_call.cb_vers = (u_int32_t)vers;
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xdrmem_create(xdrs, clp->u.mashl_callmsg, MCALL_MSG_SIZE, XDR_ENCODE);
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if (! xdr_callhdr(xdrs, &call_msg))
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warnx("clntraw_create - Fatal header serialization error.");
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clp->mcnt = XDR_GETPOS(xdrs);
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XDR_DESTROY(xdrs);
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/*
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* Set xdrmem for client/server shared buffer
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*/
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xdrmem_create(xdrs, clp->_raw_buf, UDPMSGSIZE, XDR_FREE);
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/*
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* create client handle
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*/
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client->cl_ops = clnt_raw_ops();
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client->cl_auth = authnone_create();
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mutex_unlock(&clntraw_lock);
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return (client);
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}
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/* ARGSUSED */
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static enum clnt_stat
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clnt_raw_call(h, proc, xargs, argsp, xresults, resultsp, timeout)
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CLIENT *h;
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rpcproc_t proc;
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xdrproc_t xargs;
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const char *argsp;
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xdrproc_t xresults;
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caddr_t resultsp;
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struct timeval timeout;
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{
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struct clntraw_private *clp = clntraw_private;
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XDR *xdrs = &clp->xdr_stream;
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struct rpc_msg msg;
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enum clnt_stat status;
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struct rpc_err error;
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_DIAGASSERT(h != NULL);
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mutex_lock(&clntraw_lock);
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if (clp == NULL) {
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mutex_unlock(&clntraw_lock);
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return (RPC_FAILED);
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}
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mutex_unlock(&clntraw_lock);
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call_again:
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/*
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* send request
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*/
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xdrs->x_op = XDR_ENCODE;
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XDR_SETPOS(xdrs, 0);
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clp->u.mashl_rpcmsg.rm_xid ++ ;
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if ((! XDR_PUTBYTES(xdrs, clp->u.mashl_callmsg, clp->mcnt)) ||
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(! XDR_PUTINT32(xdrs, (int32_t *)&proc)) ||
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(! AUTH_MARSHALL(h->cl_auth, xdrs)) ||
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(! (*xargs)(xdrs, __UNCONST(argsp)))) {
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return (RPC_CANTENCODEARGS);
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}
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(void)XDR_GETPOS(xdrs); /* called just to cause overhead */
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/*
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* We have to call server input routine here because this is
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* all going on in one process. Yuk.
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*/
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svc_getreq_common(FD_SETSIZE);
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/*
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* get results
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*/
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xdrs->x_op = XDR_DECODE;
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XDR_SETPOS(xdrs, 0);
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msg.acpted_rply.ar_verf = _null_auth;
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msg.acpted_rply.ar_results.where = resultsp;
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msg.acpted_rply.ar_results.proc = xresults;
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if (! xdr_replymsg(xdrs, &msg)) {
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/*
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* It's possible for xdr_replymsg() to fail partway
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* through its attempt to decode the result from the
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* server. If this happens, it will leave the reply
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* structure partially populated with dynamically
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* allocated memory. (This can happen if someone uses
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* clntudp_bufcreate() to create a CLIENT handle and
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* specifies a receive buffer size that is too small.)
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* This memory must be free()ed to avoid a leak.
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*/
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int op = xdrs->x_op;
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xdrs->x_op = XDR_FREE;
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xdr_replymsg(xdrs, &msg);
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xdrs->x_op = op;
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return (RPC_CANTDECODERES);
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}
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_seterr_reply(&msg, &error);
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status = error.re_status;
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if (status == RPC_SUCCESS) {
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if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) {
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status = RPC_AUTHERROR;
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}
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} /* end successful completion */
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else {
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if (AUTH_REFRESH(h->cl_auth))
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goto call_again;
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} /* end of unsuccessful completion */
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if (status == RPC_SUCCESS) {
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if (! AUTH_VALIDATE(h->cl_auth, &msg.acpted_rply.ar_verf)) {
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status = RPC_AUTHERROR;
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}
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if (msg.acpted_rply.ar_verf.oa_base != NULL) {
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xdrs->x_op = XDR_FREE;
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(void)xdr_opaque_auth(xdrs, &(msg.acpted_rply.ar_verf));
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}
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}
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return (status);
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}
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/*ARGSUSED*/
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static void
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clnt_raw_geterr(cl, error)
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CLIENT *cl;
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struct rpc_err *error;
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{
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}
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/* ARGSUSED */
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static bool_t
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clnt_raw_freeres(cl, xdr_res, res_ptr)
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CLIENT *cl;
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xdrproc_t xdr_res;
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caddr_t res_ptr;
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{
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struct clntraw_private *clp = clntraw_private;
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XDR *xdrs = &clp->xdr_stream;
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bool_t rval;
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mutex_lock(&clntraw_lock);
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if (clp == NULL) {
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rval = (bool_t) RPC_FAILED;
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mutex_unlock(&clntraw_lock);
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return (rval);
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}
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mutex_unlock(&clntraw_lock);
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xdrs->x_op = XDR_FREE;
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return ((*xdr_res)(xdrs, res_ptr));
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}
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/*ARGSUSED*/
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static void
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clnt_raw_abort(cl)
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CLIENT *cl;
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{
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}
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/*ARGSUSED*/
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static bool_t
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clnt_raw_control(cl, ui, str)
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CLIENT *cl;
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u_int ui;
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char *str;
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{
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return (FALSE);
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}
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/*ARGSUSED*/
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static void
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clnt_raw_destroy(cl)
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CLIENT *cl;
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{
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}
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static struct clnt_ops *
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clnt_raw_ops()
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{
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static struct clnt_ops ops;
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#ifdef _REENTRANT
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extern mutex_t ops_lock;
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#endif
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/* VARIABLES PROTECTED BY ops_lock: ops */
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mutex_lock(&ops_lock);
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if (ops.cl_call == NULL) {
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ops.cl_call = clnt_raw_call;
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ops.cl_abort = clnt_raw_abort;
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ops.cl_geterr = clnt_raw_geterr;
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ops.cl_freeres = clnt_raw_freeres;
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ops.cl_destroy = clnt_raw_destroy;
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ops.cl_control = clnt_raw_control;
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}
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mutex_unlock(&ops_lock);
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return (&ops);
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}
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