glibc/sunrpc/clnt_raw.c
Andreas Jaeger 021db4be6f Make sunrpc code usable again
New configure option --enable-obsolete-rpc makes the deprecated RPC
  headers and functions available at compile time as they were before
  version 2.14.  This option will be removed at some time in the future
  after the TI-RPC library becomes fully sufficient for the needs of
  existing applications.
2012-05-10 20:19:53 +02:00

259 lines
6.7 KiB
C

/*
* 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>
#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;
};
#ifdef _RPC_THREAD_SAFE_
#define clntraw_private RPC_THREAD_VARIABLE(clntraw_private_s)
#else
static struct clntraw_private_s *clntraw_private;
#endif
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 (h, proc, xargs, argsp, xresults, resultsp, timeout)
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 (cl, xdr_res, res_ptr)
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)
{
}