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/*
* clnt_raw.c
*
* Copyright (c) 2010, Oracle America, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
* * Neither the name of the "Oracle America, Inc." nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Memory based rpc for simple testing and timing.
* Interface to create an rpc client and server in the same process.
* This lets us simulate rpc and get round trip overhead, without
* any interference from the kernel.
*/
#include <rpc/rpc.h>
#include <rpc/svc.h>
#include <rpc/xdr.h>
#include <libintl.h>
#include <shlib-compat.h>
#define MCALL_MSG_SIZE 24
/*
* This is the "network" we will be moving stuff over.
*/
struct clntraw_private_s
{
CLIENT client_object;
XDR xdr_stream;
char _raw_buf[UDPMSGSIZE];
union
{
char msg[MCALL_MSG_SIZE];
u_long rm_xid;
} mashl_callmsg;
u_int mcnt;
};
#define clntraw_private RPC_THREAD_VARIABLE(clntraw_private_s)
static enum clnt_stat clntraw_call (CLIENT *, u_long, xdrproc_t, caddr_t,
xdrproc_t, caddr_t, struct timeval);
static void clntraw_abort (void);
static void clntraw_geterr (CLIENT *, struct rpc_err *);
static bool_t clntraw_freeres (CLIENT *, xdrproc_t, caddr_t);
static bool_t clntraw_control (CLIENT *, int, char *);
static void clntraw_destroy (CLIENT *);
static const struct clnt_ops client_ops =
{
clntraw_call,
clntraw_abort,
clntraw_geterr,
clntraw_freeres,
clntraw_destroy,
clntraw_control
};
/*
* Create a client handle for memory based rpc.
*/
CLIENT *
clntraw_create (u_long prog, u_long vers)
{
struct clntraw_private_s *clp = clntraw_private;
struct rpc_msg call_msg;
XDR *xdrs;
CLIENT *client;
if (clp == 0)
{
clp = (struct clntraw_private_s *) calloc (1, sizeof (*clp));
if (clp == 0)
return (0);
clntraw_private = clp;
}
xdrs = &clp->xdr_stream;
client = &clp->client_object;
/*
* pre-serialize the static part of the call msg and stash it away
*/
call_msg.rm_direction = CALL;
call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
call_msg.rm_call.cb_prog = prog;
call_msg.rm_call.cb_vers = vers;
xdrmem_create (xdrs, clp->mashl_callmsg.msg, MCALL_MSG_SIZE, XDR_ENCODE);
if (!xdr_callhdr (xdrs, &call_msg))
{
perror (_ ("clnt_raw.c: fatal header serialization error"));
}
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 = (struct clnt_ops *) &client_ops;
client->cl_auth = authnone_create ();
return client;
}
libc_hidden_nolink_sunrpc (clntraw_create, GLIBC_2_0)
static enum clnt_stat
clntraw_call (CLIENT *h, u_long proc, xdrproc_t xargs, caddr_t argsp,
xdrproc_t xresults, caddr_t resultsp, struct timeval timeout)
{
struct clntraw_private_s *clp = clntraw_private;
XDR *xdrs = &clp->xdr_stream;
struct rpc_msg msg;
enum clnt_stat status;
struct rpc_err error;
if (clp == NULL)
return RPC_FAILED;
call_again:
/*
* send request
*/
xdrs->x_op = XDR_ENCODE;
XDR_SETPOS (xdrs, 0);
/* Just checking the union definition to access rm_xid is correct. */
if (offsetof (struct rpc_msg, rm_xid) != 0)
abort ();
clp->mashl_callmsg.rm_xid++;
if ((!XDR_PUTBYTES (xdrs, clp->mashl_callmsg.msg, clp->mcnt)) ||
(!XDR_PUTLONG (xdrs, (long *) &proc)) ||
(!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))
return RPC_CANTDECODERES;
_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;
}
static void
clntraw_geterr (CLIENT *cl, struct rpc_err *err)
{
}
static bool_t
clntraw_freeres (CLIENT *cl, xdrproc_t xdr_res, caddr_t res_ptr)
{
struct clntraw_private_s *clp = clntraw_private;
XDR *xdrs = &clp->xdr_stream;
bool_t rval;
if (clp == NULL)
{
rval = (bool_t) RPC_FAILED;
return rval;
}
xdrs->x_op = XDR_FREE;
return (*xdr_res) (xdrs, res_ptr);
}
static void
clntraw_abort (void)
{
}
static bool_t
clntraw_control (CLIENT *cl, int i, char *c)
{
return FALSE;
}
static void
clntraw_destroy (CLIENT *cl)
{
}
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