Added a basic censorship filter.

If text/badwords.can exists, will mask those words before sending them to an AX.25 client from an rlogin tunnel.
(This could be moved into the AX25.Client object in kissAX25lib.js instead, at some later date.)

exec/ax25tunnel.js

@@ -87,6 +87,23 @@ var RLogin = function(host, port, username, password, terminal) {
 
 }
 
+var f = new File(system.text_dir + "badwords.can");
+if(f.exists) {
+	f.open("r");
+	var badWords = f.readAll();
+	f.close();
+} else {
+	var badWords = [];
+}
+var censor = function(s) {
+	for(var b = 0; b < badWords.length; b++) {
+		var redact = badWords[b].replace(/./g, "*");
+		var re = new RegExp(badWords[b], "ig");
+		s = s.replace(re, redact);
+	}
+	return s;
+}
+
 AX25.logging = true;
 var tnc = AX25.loadAllTNCs();
 var tunnels = {};
@@ -163,7 +180,7 @@ while(!js.terminated) {
 		if(tunnels[AX25.clients[c].id].dataWaiting) {
 			var fromTunnel = tunnels[AX25.clients[c].id].receive();
 			if(fromTunnel.length > 0)
-				AX25.clients[c].sendString(fromTunnel);
+				AX25.clients[c].sendString(censor(fromTunnel));
 		}
 		if(AX25.clients[c].dataWaiting) {
 			var fromClient = AX25.clients[c].receiveString();