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Commit cac5f40a authored by echicken's avatar echicken
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Rewritten. 

Gates between AX.25 unproto clients and the terminal server (rlogin).
Still a work in progress; new user account creation improvements forthcoming.
A command shell geared toward these clients will appear in the near future.  It works passably well with classic_shell.js for the time being.
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exec/ax25tunnel.js
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/* ax25tunnel.js
echicken -at- bbs.electronicchicken.com (VE3XEC)
// ax25tunnel.js
// VE3XEC (echicken -at- bbs.electronicchicken.com)
// Work-in-progress AX.25 unproto <-> Synchronet RLogin server tunnel
This script is responsible for handling connections from AX.25 clients
and then tunneling traffic between them and the packet-bbs.js service
that you'll also need to run. It should be replaced by something that
creates an rlogin session for each connecting client and translates
output from the Synchronet terminal server for transmission to AX.25
clients. I don't feel like writing an rlogin client in JS right now,
so this is what you get.
load("sbbsdefs.js");
load("sockdefs.js");
load("kissAX25lib.js");
/* This could be made into more of a proper RLogin client, but for now it's
just the bare minimum required for the purposes of this script. */
var RLogin = function(host, port, username, password, terminal) {
var settings = {
'timeout' : 30,
'receiveBuffer' : 255
};
Prior to running this script, you'll need to edit ctrl/kiss.ini in order
to configure your TNC(s). You'll also need to add packet-bbs.js to your
ctrl/services.ini file (see the comments at the top of packet-bbs.js for
details.) Once this is done, run this script via jsexec like so:
var socket = new Socket();
jsexec -l ax25tunnel.js tnc1 tnc2 tnc3 etc...
this.__defineGetter__(
"connected",
function() {
return socket.is_connected;
}
);
Where tnc1, tnc2, tnc3 are the names of sections from your ctrl/kiss.ini
file. */
this.__defineGetter__(
"dataWaiting",
function() {
return socket.data_waiting;
}
);
load("sbbsdefs.js");
load("kissAX25lib.js");
load("event-timer.js");
this.connect = function() {
socket.connect(host, port);
socket.sendBin(0, 1);
socket.send(username);
socket.sendBin(0, 1);
socket.send(password);
socket.sendBin(0, 1);
socket.send(terminal);
socket.sendBin(0, 1);
var sTime = time();
while(time() - sTime < settings.timeout) {
if(socket.poll(.1))
break;
}
if(socket.recvBin(1) != 0)
return false;
return true;
}
this.disconnect = function() {
socket.close();
}
this.receive = function() {
if(!socket.is_connected || !socket.data_waiting)
return false;
var r = socket.recv(settings.receiveBuffer);
r = r.split("");
switch(r[0]) {
case 80:
r.shift();
break;
case 10:
r.shift();
break;
case 20:
r.shift();
break;
case 02:
r.shift();
break;
default:
break;
}
return (r.length > 0) ? r.join("") : "";
}
this.send = function(str) {
if(!socket.is_connected || !socket.is_writeable)
return false;
socket.write(str);
}
var timer = new Timer();
var kissTNCs = [];
for(var k = 0; k < argc; k++) {
kissTNCs.push(loadKISSInterface(argv[k]));
}
var kissFrame;
var sockRet = "";
var ax25Clients = new Object();
var f = new File(system.ctrl_dir + "services.ini");
f.open("r");
var i = f.iniGetObject("Packet-BBS");
f.close();
function beaconAllTNCs() {
for(var k = 0; k < kissTNCs.length; k++) {
kissTNCs[k].beacon();
}
}
timer.addEvent(600000, true, beaconAllTNCs);
beaconAllTNCs();
AX25.logging = true;
var tnc = AX25.loadAllTNCs();
var tunnels = {};
while(!js.terminated) {
// Check for frames waiting on any KISS interface
for(var k = 0; k < kissTNCs.length; k++) {
kissFrame = kissTNCs[k].getKISSFrame();
if(!kissFrame)
for(var tnc in AX25.tncs) {
AX25.tncs[tnc].cycle();
while(AX25.tncs[tnc].dataWaiting) {
var packet = AX25.tncs[tnc].receive();
if(
packet.destinationCallsign != AX25.tncs[tnc].callsign
||
packet.destinationSSID != AX25.tncs[tnc].ssid
) {
continue;
}
if(!AX25.clients.hasOwnProperty(packet.clientID)) {
var a = new AX25.Client(AX25.tncs[tnc], packet);
var usernumber = system.matchuserdata(U_HANDLE, packet.sourceCallsign);
if(usernumber < 1) {
// Get Deuce's WD1CKS newuser creation thing to better
// populate user data here.
var u = system.new_user(packet.sourceCallsign);
u.alias = packet.sourceCallsign;
u.name = packet.sourceCallsign;
u.handle = packet.sourceCallsign;
u.security.password = time(); // Do something better here
} else {
var u = new User(usernumber);
}
var username = u.alias;
var password = u.security.password;
tunnels[packet.clientID] = new RLogin(
system.inet_addr,
513,
username,
password,
"dumb/9600"
);
tunnels[packet.clientID].connect();
} else {
AX25.clients[packet.clientID].receivePacket(packet);
}
}
}
for(var c in AX25.clients) {
AX25.clients[c].cycle();
if(!AX25.clients[c].connected) {
if(tunnels.hasOwnProperty(AX25.clients[c].id)) {
tunnels[AX25.clients[c].id].disconnect();
delete tunnels[AX25.clients[c].id];
}
delete AX25.clients[c];
continue;
var p = new ax25packet();
p.disassemble(kissFrame);
if(p.destination != kissTNCs[k].callsign || p.destinationSSID != kissTNCs[k].ssid)
}
if(
!tunnels.hasOwnProperty(AX25.clients[c].id)
||
!tunnels[AX25.clients[c].id].connected
) {
AX25.clients[c].disconnect();
continue;
if(!ax25Clients.hasOwnProperty(p.clientID)) {
ax25Clients[p.clientID] = new ax25Client(p.destination, p.destinationSSID, p.source, p.sourceSSID, kissTNCs[k]);
ax25Clients[p.clientID].sock = new Socket();
ax25Clients[p.clientID].sock.connect("localhost", i.Port);
ax25Clients[p.clientID].sock.send(ax25Clients[p.clientID].callsign + "\r\n");
ax25Clients[p.clientID].sock.send(ax25Clients[p.clientID].ssid + "\r\n");
ax25Clients[p.clientID].sock.send(ax25Clients[p.clientID].kissTNC.callsign + "\r\n");
ax25Clients[p.clientID].sock.send(ax25Clients[p.clientID].kissTNC.ssid + "\r\n");
}
sockRet = byteArrayToString(ax25Clients[p.clientID].receive(p));
if(sockRet)
ax25Clients[p.clientID].sock.send(sockRet + "\r\n");
if(!ax25Clients[p.clientID].connected) {
ax25Clients[p.clientID].sock.close();
delete(ax25Clients[p.clientID]);
if(tunnels[AX25.clients[c].id].dataWaiting) {
var fromTunnel = tunnels[AX25.clients[c].id].receive();
AX25.clients[c].sendString(fromTunnel);
}
}
// Check for data waiting on any sockets
for(var c in ax25Clients) {
if(ax25Clients[c].wait)
continue;
if(ax25Clients[c].sock.data_waiting && ax25Clients[c].nr == ax25Clients[c].ssv && !ax25Clients[c].reject) {
var sendMe = ax25Clients[c].sock.recvfrom(false, 256).data;
sendMe = stringToByteArray(sendMe);
ax25Clients[c].send(sendMe);
} else if(!ax25Clients[c].sock.is_connected) {
ax25Clients[c].disconnect();
log(LOG_INFO, ax25Clients[c].callsign + "-" + ax25Clients[c].ssid + " has disconnected from " + ax25Clients[c].kissTNC.name + ", " + ax25Clients[c].kissTNC.callsign + "-" + ax25Clients[c].kissTNC.ssid);
delete(ax25Clients[p.clientID]);
if(AX25.clients[c].dataWaiting) {
var fromClient = AX25.clients[c].receiveString();
tunnels[AX25.clients[c].id].send(fromClient);
}
}
timer.cycle();
}
mswait(5);
}
\ No newline at end of file
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