GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/rpc/clnt_raw.c Lines: 0 71 0.0 %
Date: 2017-11-13 Branches: 0 36 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: clnt_raw.c,v 1.20 2015/11/01 03:45:29 guenther Exp $ */
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/*
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 * Copyright (c) 2010, Oracle America, Inc.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions are
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 * met:
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 *
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 *     * Redistributions of source code must retain the above copyright
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 *       notice, this list of conditions and the following disclaimer.
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 *     * Redistributions in binary form must reproduce the above
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 *       copyright notice, this list of conditions and the following
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 *       disclaimer in the documentation and/or other materials
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 *       provided with the distribution.
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 *     * Neither the name of the "Oracle America, Inc." nor the names of its
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 *       contributors may be used to endorse or promote products derived
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 *       from this software without specific prior written permission.
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 *
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 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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 *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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 *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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 *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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 *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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 *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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 *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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 *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/*
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 * clnt_raw.c
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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 <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <rpc/rpc.h>
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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[UDPMSGSIZE];
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	char	mashl_callmsg[MCALL_MSG_SIZE];
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	u_int	mcnt;
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} *clntraw_private;
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static enum clnt_stat	clntraw_call(CLIENT *, u_long, xdrproc_t, caddr_t,
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			    xdrproc_t, caddr_t, struct timeval);
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static void		clntraw_abort(CLIENT *);
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static void		clntraw_geterr(CLIENT *, struct rpc_err *);
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static bool_t		clntraw_freeres(CLIENT *, xdrproc_t, caddr_t);
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static bool_t		clntraw_control(CLIENT *, u_int, void *);
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static void		clntraw_destroy(CLIENT *);
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static struct clnt_ops client_ops = {
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	clntraw_call,
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	clntraw_abort,
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	clntraw_geterr,
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	clntraw_freeres,
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	clntraw_destroy,
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	clntraw_control
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};
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void	svc_getreq(int rdfds);
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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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clntraw_create(u_long prog, u_long 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;
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	CLIENT	*client;
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	if (clp == NULL) {
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		clp = calloc(1, sizeof (*clp));
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		if (clp == NULL)
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			goto fail;
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		clntraw_private = clp;
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	}
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	xdrs = &clp->xdr_stream;
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	client = &clp->client_object;
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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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	call_msg.rm_call.cb_prog = prog;
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	call_msg.rm_call.cb_vers = vers;
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	xdrmem_create(xdrs, clp->mashl_callmsg, MCALL_MSG_SIZE, XDR_ENCODE);
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	if (!xdr_callhdr(xdrs, &call_msg))
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		goto fail;
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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 = &client_ops;
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	client->cl_auth = authnone_create();
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	if (client->cl_auth == NULL)
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		goto fail;
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	return (client);
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fail:
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	mem_free((caddr_t)clntraw_private, sizeof(*clntraw_private));
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	clntraw_private = NULL;
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	rpc_createerr.cf_stat = RPC_SYSTEMERROR;
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	rpc_createerr.cf_error.re_errno = errno;
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	return (NULL);
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}
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static enum clnt_stat
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clntraw_call(CLIENT *h, u_long proc, xdrproc_t xargs, caddr_t argsp,
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    xdrproc_t xresults, caddr_t resultsp, struct timeval timeout)
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{
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	struct clntraw_private *clp = clntraw_private;
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	XDR *xdrs;
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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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	if (clp == NULL)
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		return (RPC_FAILED);
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	xdrs = &clp->xdr_stream;
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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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	((struct rpc_msg *)clp->mashl_callmsg)->rm_xid ++ ;
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	if ((! XDR_PUTBYTES(xdrs, clp->mashl_callmsg, clp->mcnt)) ||
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	    (! XDR_PUTLONG(xdrs, (long *)&proc)) ||
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	    (! AUTH_MARSHALL(h->cl_auth, xdrs)) ||
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	    (! (*xargs)(xdrs, 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(1);
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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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		/* xdr_replymsg() may have left some things allocated */
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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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static void
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clntraw_geterr(CLIENT *clnt, struct rpc_err *err)
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{
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}
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static bool_t
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clntraw_freeres(CLIENT *cl, xdrproc_t xdr_res, caddr_t res_ptr)
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{
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	struct clntraw_private *clp = clntraw_private;
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	XDR *xdrs;
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	bool_t rval;
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	if (clp == NULL) {
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		rval = (bool_t) RPC_FAILED;
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		return (rval);
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	}
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	xdrs = &clp->xdr_stream;
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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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static void
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clntraw_abort(CLIENT *clnt)
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{
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}
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static bool_t
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clntraw_control(CLIENT *clnt, u_int i, void *v)
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{
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	return (FALSE);
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}
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static void
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clntraw_destroy(CLIENT *clnt)
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{
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}