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// -*- c++ -*-
/*
Copyright (C) 1991 Peter Bersen
This file is part of the rpc++ Library. This library is free
software; you can redistribute it and/or modify it under the terms of
the GNU Library General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your
option) any later version. This library is distributed in the hope
that it will be useful, but WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the GNU Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
Modified and partially rewritten March 1992 by Michael N. Lipp,
mnl@dtro.e-technik.th-darmstadt.de. The original copyright terms and
conditions apply without change to any modified or new parts.
*/
static char _rpcpp_stub_cc_[]
= "stub.cc,v 2.3 1992/06/15 19:12:46 mnl Exp";
// stub.cc,v
// Revision 2.3 1992/06/15 19:12:46 mnl
// Fixed a few bugs, clarified interface.
//
// Revision 2.2 1992/06/13 14:27:04 mnl
// Adapted to (patched) gcc-2.2. Fixed several bugs.
//
// Revision 2.1.1.1 1992/03/08 13:28:42 mnl
// Initial mnl version.
//
#ifdef __GNUG__
#pragma implementation
#endif
#include <stream.h>
#include <memory.h>
#include <assert.h>
#include "rpc++/stub.h"
timeval RpcStub::defaultTimeout = { 25, 0 };
void* RpcStub::res = 0;
size_t RpcStub::resmax = 0;
xdrproc_t RpcStub::resproc = 0;
void RpcStub::init (u_long prog, u_long vers,
char* srv, timeval timo, bool connect)
{
errorState = noError;
program = prog;
version = vers;
server = srv;
timeout = timo;
svc = 0;
if (connect)
Reconnect ();
else
errorState = notConnected;
}
RpcStub::~RpcStub ()
{
if (resproc) // "Call" has been called at least once,
clnt_freeres (svc, resproc, res); // free any data allocated by clnt_call
if (svc)
clnt_destroy (svc);
}
void* RpcStub::HandleError ()
{
switch (errorState)
{
case notConnected:
cerr << "rpc++: Stub has not been connected to server.\n";
case cantCreate:
cerr << clnt_spcreateerror ("rpc++") << '\n';
break;
case cantCall:
cerr << clnt_sperror (svc, "rpc++") << '\n';
exit (1);
}
return 0; // suppress compiler warning
}
void RpcStub::Reconnect ()
{
if (svc)
clnt_destroy (svc);
svc = clnt_create (server, program, version, "tcp"); // connect to client
if (svc == 0) // failed ?
{
HandleError (cantCreate);
errorState = notConnected;
return;
}
errorState = noError;
}
void* RpcStub::Call (RpcRequest& req, void* in, bool handle_errors)
{
void* args[] = { in };
return DoCall (req, args, handle_errors);
}
void* RpcStub::Call (RpcRequest& req, void* in0, void* in1, bool handle_errors)
{
void* args[] = { in0, in1 };
return DoCall (req, args, handle_errors);
}
void* RpcStub::Call (RpcRequest& req, void* in0, void* in1, void* in2,
bool handle_errors)
{
void* args[] = { in0, in1, in2 };
return DoCall (req, args, handle_errors);
}
void* RpcStub::Call (RpcRequest& req, void* in0, void* in1, void* in2,
void* in3, bool handle_errors)
{
void* args[] = { in0, in1, in2, in3 };
return DoCall (req, args, handle_errors);
}
void* RpcStub::Call (RpcRequest& req, void* in0, void* in1, void* in2,
void* in3, void* in4, bool handle_errors)
{
void* args[] = { in0, in1, in2, in3, in4 };
return DoCall (req, args, handle_errors);
}
void* RpcStub::Call (RpcRequest& req, void* in0, void* in1, void* in2,
void* in3, void* in4, void* in5, bool handle_errors)
{
void* args[] = { in0, in1, in2, in3, in4, in5 };
return DoCall (req, args, handle_errors);
}
void* RpcStub::Call (RpcRequest& req, void* in0, void* in1, void* in2,
void* in3, void* in4, void* in5, void* in6,
bool handle_errors)
{
void* args[] = { in0, in1, in2, in3, in4, in5, in6 };
return DoCall (req, args, handle_errors);
}
void* RpcStub::Call (RpcRequest& req, void** ins, bool handle_errors)
{
return DoCall (req, ins, handle_errors);
}
void* RpcStub::DoCall (RpcRequest& req, void** args, bool handle_errors)
{
static timeval nullTimeout = { 0, 0 };
if (! OK () )
{
if (! handle_errors)
return 0;
return HandleError ();
}
if (resproc) // "Call" has been called previously,
clnt_freeres (svc, resproc, res); // free any data allocated by clnt_call
resproc = req.OutInfo()->Proc (); // current output deserializer
if (req.OutInfo()->Size () > resmax) // enough space for result?
{
delete res; // delete old result buffer
res = new char[resmax = req.OutInfo()->Size ()]; // get a new one
}
if (req.OutInfo()->Size () > 0 ) // preset result (everyone does it, why?)
memset (res, 0, req.OutInfo()->Size ());
XdrSeqInfo xsi = { req.InInfo (), args };
if (req.Type () == RpcRequest::normal)
{
if (clnt_call (svc, req.RequestNumber (), // do call
Xdr::XdrParams, &xsi,
req.OutInfo()->Proc (), res,
timeout) != RPC_SUCCESS)
{
if (! handle_errors)
return 0;
return HandleError (cantCall);
}
return res;
}
// req.Type () is batched or async
enum clnt_stat callres;
callres = clnt_call (svc, req.RequestNumber (), // do call
Xdr::XdrParams, &xsi,
(req.Type () == RpcRequest::batched
? (xdrproc_t)0 : xdr_void), res,
nullTimeout);
if (callres != RPC_SUCCESS && callres != RPC_TIMEDOUT)
{
if (! handle_errors)
return 0;
return HandleError (cantCall);
}
return res;
}
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