Initial import of Cortex code from my cs416 class at UBC

This commit is contained in:
Dan 2010-12-21 18:11:43 -05:00
commit 5ce2a651ef
10 changed files with 2852 additions and 0 deletions

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ConnHandler.java Normal file
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import java.applet.*;
//import java.awt.*;
import java.awt.event.*;
import javax.swing.Timer;
import java.awt.image.*;
import java.net.InetSocketAddress;
import java.net.InetAddress;
import java.lang.*;
import java.io.*;
import java.net.*;
import java.util.Date;
import java.text.SimpleDateFormat;
import java.util.Scanner;
import java.util.HashMap;
import javax.swing.JOptionPane.*;
import java.util.Enumeration;
import java.util.List;
import java.util.ArrayList;
class ConnHandler implements Runnable {
Socket sock;
ResManager res;
final int TYPE_GET = 0;
final int TYPE_POST = 1;
public ConnHandler(Socket s, ResManager r) {
sock = s;
res = r;
}
/* parseAjax
* Ajax content is in form of
* (key=value\n)*\n\n
* returns a string:string hashmap of key value pairs
*/
HashMap<String, String> parseAjax(BufferedReader sin) {
HashMap<String, String> req = new HashMap<String, String>();
Scanner scan = new Scanner(sin);
scan.useDelimiter("\n\n");
String all = scan.next();
req.put("req", all);
for ( String line : all.split("\n")) {
String kv[] = line.split("=");
req.put(kv[0], kv[1]);
}
return req;
}
String ajaxCall(String dest, BufferedReader sin) {
Socket client = null;
PrintWriter out = null;
BufferedReader in = null;
// Get Ajax call
Scanner scan = new Scanner(sin);
scan.useDelimiter("\n\n");
String all = scan.next();
//res.log("Sending to " + dest + ": '" + all +"'");
// clean up dest
// Connect to dest
try {
//res.alert(dest);
String[] d = dest.split(":");
//res.alert(Integer.toString( d.length));
String p = "2600";
if (d.length > 1)
p = d[1];
client = new Socket(d[0], Integer.parseInt(p));
//InetAddress addr = new InetSocketAddress("127.0.0.1");
if (!client.isConnected())
res.error("failed to connect!!!!!!!");
//"127.0.0.1", 2600); //dest, res.PORT);
//client.connect(addr, 2600);
out = new PrintWriter(client.getOutputStream(), true);
in = new BufferedReader(new InputStreamReader(client.getInputStream()));
} catch (Exception e) {
res.log( "ERROR> Exception in ajaxCall (Connecting): " + e.toString());
return "";
}
//res.alert("Established connection");
// HTTP / AJAX Header + call
out.print("POST / HTTP/1.1\r\n" +
"Host: " + dest + "\r\n" +
"User-Agent: Cortex\r\n" +
"Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n" +
"Accept-Language: en-us,en;q=0.5\r\n"+
"Accept-Encoding: gzip,deflate\r\n" +
"Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\n" +
"Keep-Alive: 300\r\n" +
"Connection: keep-alive\r\n" +
"Content-Type: application/x-www-form-urlencoded; charset=UTF-8\r\n" +
"Referer: http://localhost:2600/client.html\r\n" +
"Content-Length: " + (all.length()+2) + "\r\n" +
"Pragma: no-cache\r\n" +
"Cache-Control: no-cache\r\n" +
"\r\n");
out.print(all + "\n\n");
out.flush();
//res.log("sent message");
//out.close();
//res.alert("printed request, trying to read");
// Read response
String resp = "";
// read http header
//res.log("Reading resp header");
try {
String header = in.readLine();
while (header.length() >= 3) {
//res.log("header: " + header);
header = in.readLine();
}
} catch (Exception e) {
res.error("Exception in ajaxCall (reading HTTP response header): " + e.toString());
return "";
}
//res.log("Reading response body");
//res.alert("done reading resp header");
// read actual response
scan = new Scanner(in);
scan.useDelimiter("\n\n");
resp = scan.next();
//res.alert("done reading resp");
//res.log("Closing ajaxCall");
try {
in.close();
out.close();
client.close();
} catch (Exception e) {
res.error( "Exception in ajaxCall (Closing Connection): " + e.toString());
}
//res.alert("closed connections");
//res.log("ajaxCall returning response to js caller: '" + resp + "'");
return resp;
}
// Function to enumerate all IP addresses of a computer
// and then try and select the web facing one
private String getIPAddress() {
ArrayList<String> ips = new ArrayList<String>();
try {
Enumeration e = NetworkInterface.getNetworkInterfaces();
while(e.hasMoreElements()) {
NetworkInterface ni = (NetworkInterface) e.nextElement();
Enumeration e2 = ni.getInetAddresses();
InetAddress ip=null;
String istr = null;
while (e2.hasMoreElements()){
ip = (InetAddress) e2.nextElement();
istr = ip.toString();
if (istr.substring(0,1).equals("/"))
istr = istr.substring(1);
if (istr.charAt(0) >= '0' && istr.charAt(0) <= '9' && istr.indexOf(':') == -1) {
//res.log("adding: '" + istr +"'");
ips.add(istr);
}
//ip = (InetAddress) e2.nextElement();
}
/*if (ip == null)
continue;
istr = ip.toString();
if (istr.substring(0,1).equals("/"))
istr = istr.substring(1);
ips.add(istr);*/
}
} catch (Exception e) {
res.error( "Exception in ConnHandler.getIPAddress(): " + e.toString());
}
// Now we have a list of IPs associated with this machine. Lets pick the best one
if (ips.size() == 0)
return "";
else if (ips.size() == 1)
return ips.get(0);
else {
ips.remove("127.0.0.1");
/*for (int i=0; i< ips.size(); i++) {
if(ips.size() ==1)
break;
String ip = ips.get(i);
if (
*/
// Many IPs so weed out baddies
for (int i=0; i < ips.size(); i++) {
if (ips.size() == 1)
break;
String ip = ips.get(i);
// remove local private subnets
if(ip.substring(0, 7).equals("192.168")) {
ips.remove(i);
i--;
} else if (ip.substring(0, 3).equals("10.")) {
ips.remove(i);
i--;
}
}
return ips.get(0);
}
}
/* handleAjax
* handle the various ajax commands appropriately
*/
private String handleAjax(HashMap<String, String> req) {
String response = "";
String cmd = req.get("cmd");
//res.log("AJAX " + cmd);
if (cmd.equals("ping")) {
response = "pong";
//res.log("PING pong");
} else if (cmd.equals("greet")) {
response = getIPAddress() + ":" + res.PORT + " " + res.getNodeData("originURL") ;
} else if (cmd.equals("getLog")) {
ArrayList<String> l = res.getLog();
response = "";
for (int i = l.size()-1; i >= 0; i--) {
response += l.get(i) + "\n";
}
// response += " ";
} else if (cmd.equals("reloadHTML")) {
res.log("Reloading HTML from src...");
res.reloadSite();
} else if (cmd.equals("sendMsg")) {
//res.log("sendMsg: query=" + req.get("query"));
res.queueMsg(req.get("req"));
response = "received on " + res.PORT;
} else if (cmd.equals("getMsgs")) {
ArrayList<String> mq = res.getMsgs();
for(int i =0; i < mq.size(); i++) {
response += mq.get(i) + "\n\n";
}
//res.log("getMsgs: '" + response + "'");
//response = "";
} else if (cmd.equals("kill")) {
res.killSwitch = true;
} else {
response = "Unknown cmd: " + cmd;
res.log("Unknown cmd: " + cmd);
}
return response;
}
/* Handle GET requests
* A GET request is a generic browser request,
* meaning not an AJAX request, so we serve the main
* interface html file.
*/
private byte[] handleGet(String req) {
//javax.swing.JOptionPane.showMessageDialog(null, "GET: " + req);
int end = req.indexOf(' ');
req = req.substring(1, end);
//res.alert("'" + req + "'");
if (req.equals(""))
req = "shell.html";
byte[] r = res.getSite(req);
if (r == null) {
//javax.swing.JOptionPane.showMessageDialog(null, "Error: file not found: " + req);
return new byte[0];
} else
return r;
}
/* run
* Handle a HTTP connection
* Read the HTTP request and handle accordingly
* GET requests all get the main html file
* AJAX requests are managed accordingly
*/
public void run() {
/*try {
Thread.currentThread().sleep(10000);
} catch (Exception e) {
res.alert("EXCEPTION : " + e.toString());
}
res.alert("Done waiting");*/
try {
// READ HTTP / AJAX call
BufferedReader sin = new BufferedReader(new InputStreamReader(sock.getInputStream()));
String header= "";
int i = 0;
int type = TYPE_POST;
String reqLine = "";
int contentLength = 0;
header = sin.readLine();
if (header == null) {
// no header, not a valid HTTP conn
res.log("Invalid connection");
return;
}
String userAgent = "agent";
while (header != null && header.length() >= 3) {
if ( header.substring(0, 3).equals("GET")) {
type = TYPE_GET;
reqLine = header;
} else if (header.length() > 4 && header.substring(0, 4).equals("POST")) {
reqLine = header;
reqLine = reqLine.substring(5);
int end = reqLine.indexOf(' ');
reqLine = reqLine.substring(0, end);
if (reqLine.charAt(0) == '/')
reqLine = reqLine.substring(1);
} else if (header.length() > 14 && header.substring(0, 14).toLowerCase().equals("content-length")) {
contentLength = Integer.parseInt(header.substring(16));
} else if (header.length() > 10 && header.substring(0, 10).equals("User-Agent")) {
//javax.swing.JOptionPane.showMessageDialog(null, header);
userAgent = header;
}
System.out.println(i + ": '" + header + "'");
i++;
header = sin.readLine();
}
//res.alert("Done reading header");
// Figure out response
String ajax_resp="";
byte[] get_resp= null;
String CODE = "200 OK";
int resp_length = 0;
if (type == TYPE_GET) {
reqLine = reqLine.substring(4);
res.log("GET " + reqLine);
get_resp = handleGet(reqLine);
if (get_resp.length == 0) {
CODE = "404 Not Found";
}
resp_length = get_resp.length;
} else {
// No forward
if (reqLine.equals("")) {
//res.alert("no forward, parse ajax");
HashMap<String, String> req = parseAjax(sin);
//res.alert("handleAjax");
ajax_resp = handleAjax(req);
//res.alert("ajax resp: " + ajax_resp);
} else { // Forward request to node
//res.log("AJAX forward to '" + reqLine + "'");
ajax_resp = reqLine;
ajax_resp = ajaxCall(reqLine, sin);
}
resp_length = ajax_resp.length();
}
// HTTP Response
PrintWriter sout = new PrintWriter(sock.getOutputStream(), true);
Date now = new java.util.Date();
SimpleDateFormat formater = new SimpleDateFormat("E, d M y H:m:s z");
sout.print("HTTP/1.1 " + CODE + "\r\n"+
"Date: " + formater.format(now) + "\r\n" +
"Content-Type: text/html; charset=UTF-8\r\n" +
"Server: Cortex @ " + Integer.toString(res.PORT) + "\r\n");
// Print response
sout.print("Content-Length: " + resp_length + "\r\n" +
"\r\n");
sout.flush();
if (type == TYPE_GET) {
//sout.write(get_resp);
sock.getOutputStream().write(get_resp);
} else {
sout.print(ajax_resp);
//res.alert("ajax returning: " + ajax_resp);
}
sout.flush();
sin.close();
sout.close();
sock.close();
} catch (IOException e) {
res.error( "IOException in ConnHandler.run(): " + e.toString());
System.out.println("IOException in ConnHandler.run()");
}
System.out.println("DONE run()");
}
}

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Cortex.java Normal file
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import java.applet.*;
//import java.awt.*;
import java.awt.event.*;
import javax.swing.Timer;
import java.awt.image.*;
import java.lang.*;
import java.io.*;
import java.net.*;
import java.util.Date;
import java.text.SimpleDateFormat;
import java.util.HashMap;
import java.util.List;
import javax.swing.JOptionPane.*;
public class Cortex extends Applet {
//private final int PORT = 2600; // in ResManager now
private ServerSocket server;
private ResManager res = new ResManager();
/*URL getCodeBase() throws Exception {
return new URL("file:///home/dan/src/school/cpsc416/cortex/");
}*/
/* main
* Main HTTP server. Accepts connections on PORT and passes them to threads
* in the form of ConnHandlers to deal with
*/
public void init() {
//javax.swing.JOptionPane.showMessageDialog(null, "APPLET STARTING!!!!");
//res.alert("Starting...");
res.putNodeData("originURL", getCodeBase().toString());
res.reloadSite();
//res.alert("Loaded site");
boolean bound = false;
while(!bound)
{
try {
server = new ServerSocket(res.PORT);
bound = true;
} catch (IOException e) {
res.PORT++;
}
}
/*
try {
server = new ServerSocket(res.PORT);
} catch (IOException e) {
res.error( "It appears another Cortex Node is already running on this computer, making this one superfulous.\nShutting down...");
}*/
/*try {
JSObject win = JSObject.getWindow(this);
win.eval("load();");
} catch(Exception e) {
res.error(e.toString());
}*/
try {
//res.alert("running server");
while (!res.killSwitch) {
Socket sock = server.accept();
//res.alert("ACCEPTED!");
new Thread(new ConnHandler(sock, res)).start();
//handler.run();
//res.alert("RESTARTING LOOP");
}
server.close();
} catch (IOException e) {
System.out.println("IOException in init(): " + e.toString());
res.error( "IOException in init(): " + e.toString());
}
//res.error("QUITING!");
}
}

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Makefile Normal file
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Cortex.jar: Cortex.class ConnHandler.class ResManager.class
jar cvf Cortex.jar Cortex.class ConnHandler.class ResManager.class
jarsigner Cortex.jar cortex_cert
ResManager.class: ResManager.java
javac ResManager.java
ConnHandler.class: ConnHandler.java
javac ConnHandler.java
Cortex.class: Cortex.java
javac Cortex.java
clean:
rm -f *.class *.jar

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ResManager.java Normal file
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import java.util.HashMap;
import javax.swing.JOptionPane.*;
import java.util.ArrayList;
import java.util.Date;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import javax.swing.JOptionPane.*;
import java.lang.*;
import java.io.*;
import java.net.*;
class ResManager {
public /*final*/ int PORT = 2600;
private HashMap<String, byte[]> site = new HashMap<String, byte[]>();
private HashMap<String, String> nodeData = new HashMap<String, String>();
private ArrayList<String> log = new ArrayList<String>();
private boolean logLock = false;
private DateFormat logDateFormat = new SimpleDateFormat("HH:mm:ss");
private boolean mqLock = false;
private ArrayList<String> msgQueue = new ArrayList<String>();
public boolean killSwitch = false;
public ResManager() {
}
public void putSite(String key, byte[] val) {
site.put(key, val);
}
public byte[] getSite(String key) {
return site.get(key);
}
public void putNodeData(String key, String val) {
nodeData.put(key, val);
}
public String getNodeData(String key) {
return nodeData.get(key);
}
private synchronized void logLock() {
while (logLock == true) {
try {
wait();
} catch (Exception e) {
error("logLock: " + e.toString());
}
}
logLock = true;
//javax.swing.JOptionPane.showMessageDialog(null, " Locked");
}
private synchronized void logUnlock() {
logLock = false;
//javax.swing.JOptionPane.showMessageDialog(null, " UnLocked");
}
public synchronized void log(String l) {
logLock();
Date d = new Date();
log.add(logDateFormat.format(d) + ": " + l);
logUnlock();
}
private synchronized void mqLock() {
while(mqLock == true) {
try {
wait();
} catch (Exception e) {
error("mqLock: " + e.toString());
}
}
mqLock = true;
}
private synchronized void mqUnlock() {
mqLock = false;
}
public synchronized void queueMsg(String m) {
mqLock();
msgQueue.add(m);
mqUnlock();
}
public synchronized ArrayList<String> getMsgs() {
mqLock();
ArrayList<String> mq = msgQueue;
msgQueue = new ArrayList<String>();
mqUnlock();
return mq;
}
public void alert(String a) {
javax.swing.JOptionPane.showMessageDialog(null, a);
log("ALERT> " + a);
}
public void error(String e) {
javax.swing.JOptionPane.showMessageDialog(null, e);
log("ERROR> " + e);
}
// returns the current log and RESETS it
public synchronized ArrayList<String> getLog()
{
logLock();
ArrayList<String> tmp = log;
log = new ArrayList<String>();
logUnlock();
return tmp;
}
public void reloadSite() {
String baseurl = getNodeData("originURL");
try {
putSite("Cortex.jar", readURL(new URL(baseurl + "Cortex.jar")));
putSite("Cortex.class", readURL(new URL(baseurl + "Cortex.jar")));
putSite("client.html", readURL(new URL(baseurl + "client.html")));
putSite("shell.html", readURL(new URL(baseurl + "shell.html")));
putSite("ajax.js", readURL(new URL(baseurl + "ajax.js")));
} catch (Exception e) {
error( "URL Exception in ResManager.reloadSite(): " + e.toString());
}
}
private byte[] readURL(URL url) {
byte[] buff=null;
try {
URLConnection urlConn = url.openConnection();
urlConn.setDoInput(true);
urlConn.setUseCaches(false);
DataInputStream dis = new DataInputStream(urlConn.getInputStream());
int length = urlConn.getContentLength();
buff = new byte[length];
int totalRead = 0;
while ( totalRead != length) {
totalRead += dis.read(buff, totalRead, length-totalRead); //, 0, length);
//alert(totalRead + "/" + length);
}
return buff;
} catch (Exception e) {
error( "Exception in ResManager.readURLIntoBuff(): " + e.toString());
return null;
}
}
/*
public synchronized void put(String key, String val) {
//javax.swing.JOptionPane.showMessageDialog(null, "putting: '" + key + "'");
//javax.swing.JOptionPane.showMessageDialog(null, val);
//data.put(key, val);
}
public synchronized String get(String key) {
//javax.swing.JOptionPane.showMessageDialog(null, "getting: '" + key + "'");
//javax.swing.JOptionPane.showMessageDialog(null, "from: " + data.keySet().toString());
//return data.get(key);
}*/
}

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Runner.java Normal file
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class Runner {
public static void main(String[] args) {
Cortex c = new Cortex();
c.init();
}
}

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TSP_map_test.js Normal file
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function map_test(value)
{
var TSPSatSolverHelper = function(graph, current, visited, distance, numberVisited, order, res)
{
visited[current] = numberVisited;
if (distance - graph[current][0] < 0)
{
visited[current] = 0;
return false;
}
if (numberVisited >= graph.length)
{
for (var index = 0; index < visited.length; index++)
order[visited[index] - 1] = index;
visited[current] = 0;
return true;
}
for (var next = 0; next < graph.length; next++)
if (graph[current][next] != 0 && visited[next] <= 0 && TSPSatSolverHelper(graph, next, visited, distance - graph[current][next], numberVisited + 1, order))
return true;
visited[current] = 0;
return false;
}
var TSPSatSolver = function(graph, distance, order)
{
var visited = new Array(graph.length);
for (var index = 0; index < graph.length; index++)
visited[index] = 0;
return TSPSatSolverHelper(graph, 0, visited, distance, 1, order, false);
}
var cities = 8;
var graph = [ [0,8,2,4,5,7,0,0],
[8,0,0,5,0,2,3,4],
[2,0,0,1,7,0,8,3],
[4,5,1,0,0,0,3,2],
[5,0,7,0,0,1,5,6],
[7,2,0,0,1,0,1,4],
[0,3,8,3,5,1,0,0],
[0,4,3,2,6,4,0,0]];
//new Array(cities);
var order = new Array(cities);
for (var index = 0; index < cities; index++)
order[index] = 0;
/*for (var row = 0; row < graph.length; row++)
graph[row] = new Array(cities);
for(var ii = 0; ii < cities; ii++)
for(var jj = 0; jj < cities; jj++)
graph[ii][jj] = (ii == jj ? 0 : 2);
graph[1][2] = 1;
graph[2][1] = 1;
graph[1][3] = 1;
graph[3][1] = 1;
*/
var result = TSPSatSolver(graph, value, order);
//return result;
if (result == true)
return order;
else
return false;
}
function reduce(list)
{
var r = new Array();
for (var i = 0; i < list.length; i++)
{
if (list[i].value != false)
{
r.push(list[i]);
break;
}
}
return r;
}

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ajax.js Normal file
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var port = location.href.substring( location.href.substring(7).indexOf(':')+8,
location.href.substring(7).indexOf('/')+7);
// Returns an ajax object
function ajaxConnect() {
var http = null;
if(window.XMLHttpRequest)
http = new XMLHttpRequest();
else if (window.ActiveXObject)
http = new ActiveXObject("Microsoft.XMLHTTP");
return http;
}
/* returns a function that can be passed to http.send
* that runs code fn on successful response
* http: ajac object
* fn: function taking one argument, the response string
* run if successful connection
* err: OPTIONAL argument that contains a funtion
* to be run if the connection failed
*/
function returnfn(http, fn, err) {
if (!fn)
fn = function(resp) {};
if (!err)
err = function() {};
return function() {
if (http.readyState == 4) {
if (http.responseText == '')
err();
else
fn(http.responseText);
}
};
}
// Does ajax magic. Makes ajax call with data and sets up
// retfn to be called on response
function ajaxSend(http, data, retfn, forward) {
if (!forward)
forward = '';
http.onreadystatechange = retfn;
http.open('POST', "http://localhost:"+port+"/"+ forward, true);
http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
http.send(data);
}

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client.html Normal file

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#!/bin/sh
# 5 years should be good
VALIDITY=1825
echo "Deleting old cortex_cert..."
keytool -delete -alias cortex_cert
echo "Generating new cortex_cert"
keytool -genkey -alias cortex_cert -validity $VALIDITY

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shell.html Normal file
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Client</title>
<script src="ajax.js" ></script>
<script>
function load() {
port = document.getElementById('port').value;
document.getElementById('client').src = "http://localhost:" + port + "/client.html";
}
function isLoaded() {
if(document.getElementById('cortex').isActive())
{
load();
clearInterval();
}
}
</script>
</head>
<body>
<input type="button" value="Load" onClick="load()" />
<input id="port" size="4" value="2600" />
<applet code="Cortex.class" archive="Cortex.jar" width="50" height="50" id="cortex"></applet>
<b>Coretex Client</b><br/>
<iframe height="400" width="600" id="client" name="client">
</iframe>
</body>
</html>