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parse-pcap.js
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var fs = require('fs');
var maxmind = require('maxmind');
var pcap = require('pcap');
var insubnet = require('insubnet');
var mapdata = require('./mapdata.js');
var rir = require('./rir.js');
var config = require('./config.js');
insubnet.setSubnets(config.myips);
maxmind.init('/usr/local/share/GeoIP/GeoIPASNum.dat');
var tcpt = new pcap.TCPTracker();
var pcap_session = pcap.createOfflineSession(process.argv[2], "");
//asn, inbool, time, ip, data, duration, egress
tcpt.on('session', function (session) {
session.on('end', function (end) {
var src = end.src.split(":");
var srcip = src[0];
var sport = src[1];
var dst = end.dst.split(":");
var dstip = dst[0];
var dport = dst[1];
var data = end.send_bytes_payload + end.recv_bytes_payload;
var duration = end.close_time - end.syn_time;
var time = end.syn_time;
var inbool, asn, asntext, egress, ip, port;
if (insubnet.Validate(srcip)) {
// outbound
var asna = maxmind.getAsn(dstip);
if (asna) {
port = dport;
var asnum = asna.split(" ");
asn = asnum[0].substr(2);
asntext = asnum.join(" ");
} else {
asn = null;
}
ip = dstip;
egress = end.send_bytes_payload;
inbool = false;
} else {
// inbound
var asna = maxmind.getAsn(srcip);
if (asna) {
port = dport; // actually you really want this in either case
var asnum = asna.split(" ");
asn = asnum[0].substr(2);
asntext = asnum.join(" ");
} else {
asn = null;
}
ip = srcip;
egress = end.recv_bytes_payload;
inbool = true;
}
addSession(asn,asntext,inbool,ip,port,time,data,duration,egress);
});
});
pcap_session.on('packet', function (raw) {
var packet = pcap.decode.packet(raw);
tcpt.track_packet(packet);
//console.log(packet.payload.dhost);
});
pcap_session.on('complete', function () {
var writedata = "var pcapmap = \n" + JSON.stringify(mapdata.map, null, 2) + ';';
fs.writeFile('./js/pcapmap.js', writedata, function(err) {
if(err) {
return console.log(err);
}
console.log("js/pcapmap.js created");
});
});
function addSession(asn, asntext, inbool, ip, port, time, data, duration, egress) {
var xy = rir.rir[asn];
if (typeof xy === 'undefined') {
return;
}
var axy = xy.replace(/\[/g, '').split(']');
var x = axy[0];
var y = axy[1];
var c = mapdata.map[x][y];
c.x = x;
c.y = y;
c.asntext = asntext;
c.altitude = c.altitude || 0;
c.sessions = c.sessions || {};
c.inbound = c.inbound || 0;
c.outbound = c.outbound || 0;
c.data = c.data || 0;
c.egress = c.egress || 0;
c.maxegress = c.maxegress || 0;
c.maxduration = c.maxduration || 0;
c.sessions[ip] = c.sessions[ip] || [];
c.sessions[ip].push({"time":time,"port":port,"data":data,"duration":duration,"egress":egress});
if (inbool) { c.inbound += 1; } else { c.outbound += 1; }
c.data += data;
c.egress += egress;
// max duration
if (duration > c.maxduration) { c.maxduration = duration; }
if (egress > c.maxegress) { c.maxegress = egress; }
// Change appearance accordingly
// Set elevation according to ranges here
if ((c.altitude < 4) && (c.data > 5000000)) {
terraform(4, c);
}
if ((c.altitude < 3) && (c.data > 1000000)) {
terraform(3, c);
}
else if ((c.altitude < 2) && (c.data > 500000)) {
terraform(2, c);
}
else if ((c.altitude < 1) && (c.data > 0)) {
terraform(1, c);
}
}
function terraform(level, c) {
c.altitude = level;
var x = c.x;
var y = c.y;
var a = [];
var coords1 = [
0,-1,
-1,0,
1,0,
0,1
];
var coords2 = [
-1,-1,
1,-1,
-1,1,
1,1
];
var coords3 = [
-1,-2,
0,-2,
1,-2,
-2,-1,
-2,0,
-2,1,
2,-1,
2,0,
2,1,
-1,2,
0,2,
1,2
];
var coords4 = [
-1,-3,
0,-3,
1,-3,
-2,-2,
2,-2,
-3,-1,
3,-1,
-3,0,
3,0,
-3,1,
3,1,
-2,2,
2,2,
-1,3,
0,3,
1,3
];
/* 444
43334
4321234
431x134
4321234
43334
444
*/
if (level == 1) {
raise(coords1,1);
}
if (level == 2) {
raise(coords1,2);
raise(coords2,1);
}
if (level == 3) {
raise(coords1,3);
raise(coords2,2);
raise(coords3,1);
}
if (level == 4) {
raise(coords1,4);
raise(coords2,3);
raise(coords3,2);
raise(coords4,1);
}
function raise(coords,lvl) {
// Go through specified coords array, get rid of off-screen ones, set x/y, push to a
for (var i = 0; i < coords.length; i += 2) {
if ((parseInt(x) + coords[i] >= 0) && (parseInt(x) + coords[i] < 66)) { //needed to prevent [-1][y] problem
//console.log(parseInt(x) + coords[i],parseInt(y) + coords[i+1]);
var n = mapdata.map[parseInt(x) + coords[i]][parseInt(y) + coords[i+1]];
if (typeof(n) != "undefined") {
n.x = parseInt(x) + coords[i];
n.y = parseInt(y) + coords[i+1];
a.push(n);
}
}
}
// Add to present elevation if already set, otherwise it's lvl - 1
for (var i = 0; i < a.length; i++) {
if (typeof(a[i].altitude) != "undefined") {
if (a[i].altitude < lvl) {
a[i].altitude = parseInt(a[i].altitude) + 1;
}
}
else {
a[i].altitude = parseInt(lvl) - 1;
}
// ensure shoreline
if (a[i].altitude > 0) {
if (parseInt(x) + 1 < 66) {
var n = mapdata.map[parseInt(a[i].x) + 1][parseInt(a[i].y)];
if (typeof(n) != "undefined") {
n.altitude = n.altitude || 0;
}
n = mapdata.map[parseInt(a[i].x)][parseInt(a[i].y) + 1];
if (typeof(n) != "undefined") {
n.altitude = n.altitude || 0;
}
}
if (parseInt(a[i].x) - 1 >= 0) {
var n = mapdata.map[parseInt(a[i].x) - 1][parseInt(a[i].y)];
if (typeof(n) != "undefined") {
n.altitude = n.altitude || 0;
}
n = mapdata.map[parseInt(a[i].x)][parseInt(a[i].y) - 1];
if (typeof(n) != "undefined") {
n.altitude = n.altitude || 0;
}
}
}
}
}
}
/*
{ src: '108.161.250.57:50248',
src_name: '108.161.250.57:50248',
dst: '192.168.100.111:80',
dst_name: '192.168.100.111:80',
state: 'CLOSED',
current_cap_time: 1430493741.965878,
syn_time: 1430493741.85929,
missed_syn: null,
connect_time: 1430493741.859595,
send_isn: 2609403242,
send_window_scale: 1,
send_packets: { '2609404730': 1430493741.859644 },
send_acks: { '3652556874': 1430493741.859644 },
send_retrans: {},
send_next_seq: 2609403243,
send_acked_seq: null,
send_bytes_ip: 60,
send_bytes_tcp: 64,
send_bytes_payload: 107,
recv_isn: 3652556873,
recv_window_scale: 1,
recv_packets:
{ '3652556874': 1430493741.85931,
'3652557108': 1430493741.963305 },
recv_acks:
{ '2609403243': 1430493741.85931,
'2609404730': 1430493741.963394 },
recv_retrans: {},
recv_next_seq: null,
recv_acked_seq: null,
recv_bytes_ip: 100,
recv_bytes_tcp: 104,
recv_bytes_payload: 234,
domain: null,
_events: { end: [Function] },
_maxListeners: undefined,
close_time: 1430493741.965878 }
*/