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//
// PLP - An implementation of the PSION link protocol
//
// Copyright (C) 1999 Philip Proudman
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// e-mail philip.proudman@btinternet.com
#include <stdio.h>
#include <string.h>
#include <stream.h>
#include <stdlib.h>
#include "defs.h"
#include "ncp.h"
#include "bufferstore.h"
#include "ppsocket.h"
#include "socketchan.h"
#include "iowatch.h"
#include "linkchan.h"
void
checkForNewSocketConnection(ppsocket & skt, int &numScp, socketChan ** scp, ncp * a, IOWatch & iow)
{
char peer[201];
ppsocket *next = skt.accept(peer, 200);
if (next != NULL) {
// New connect
cout << "New socket connection from " << peer << endl;
if ((numScp == 7) || (!a->gotLinkChannel())) {
bufferStore a;
a.addStringT("No psion ncp channel free");
next->sendBufferStore(a);
} else
scp[numScp++] = new socketChan(next, a, iow);
}
}
void
pollSocketConnections(int &numScp, socketChan ** scp)
{
for (int i = 0; i < numScp; i++) {
scp[i]->socketPoll();
if (scp[i]->terminate()) {
// Requested channel termination
delete scp[i];
numScp--;
for (int j = i; j < numScp; j++)
scp[j] = scp[j + 1];
i--;
}
}
}
void
resetSocketConnections(int &numScp, socketChan ** scp, ncp * a)
{
for (int i = 0; i < numScp; i++) {
if (scp[i]->isConnected()) {
cout << "Killing\n";
delete scp[i];
numScp--;
for (int j = i; j < numScp; j++)
scp[j] = scp[j + 1];
i--;
} else {
scp[i]->newNcpController(a);
if (scp[i]->getNcpConnectName() != NULL) {
cout << "Connecting\n";
scp[i]->ncpConnect();
} else
cout << "Ignoring\n";
}
}
}
void
usage()
{
cout << "Version : " << VERSION << endl;
cout << "Usage : ncp [-s <socket number>] [-d <device>] [-b <baud rate>]\n";
}
int
main(int argc, char **argv)
{
ppsocket skt;
IOWatch iow;
skt.startup();
// Command line parameter processing
int sockNum = DPORT;
int baudRate = DSPEED;
const char *serialDevice = DDEV;
for (int i = 1; i < argc; i++) {
if (!strcmp(argv[i], "-s") && i + 1 < argc) {
sockNum = atoi(argv[++i]);
} else if (!strcmp(argv[i], "-d") && i + 1 < argc) {
serialDevice = argv[++i];
} else if (!strcmp(argv[i], "-b") && i + 1 < argc) {
baudRate = atoi(argv[++i]);
} else {
usage();
exit(1);
}
}
if (!skt.listen("127.0.0.1", sockNum)) {
cerr << "Could not initiate listen on socket " << sockNum << endl;
cerr << "NCP is now started by rfsv - you don't have to do it explicitly yourself" << endl;
} else {
ncp *a = NULL;
int numScp;
socketChan *scp[8];
while (true) {
if (a == NULL) {
a = new ncp(serialDevice, baudRate, iow);
numScp = 0;
iow.addIO(skt.socket());
}
// sockets
checkForNewSocketConnection(skt, numScp, scp, a, iow);
pollSocketConnections(numScp, scp);
// psion
a->poll();
if (a->stuffToSend())
iow.watch(0, 100000);
else
iow.watch(100000, 0);
if (a->hasFailed()) {
cout << "ncp: restarting\n";
resetSocketConnections(numScp, scp, a);
delete a;
a = NULL;
}
}
delete a;
}
skt.closeSocket();
}
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