Extract HTTP body in Wireshark TCP Stream to files

extract.js

var fs = require('fs');
var bsplit = require('buffer-split');


var p1 = fs.readFileSync('./part1');

write(p1);

function write(px) {
  var pkts = bsplit(px,new Buffer('GET '));
  for (var i = 1; i < pkts.length; i++) {
    var dta = bsplit(pkts[i], new Buffer('\r\n\r\n'));
    var url = bsplit(dta[0], new Buffer(' HTTP/1.1'))[0];
    var path = url.toString();
    ensureDirectoryExistence(path);
    var data = dta[2];
    fs.writeFileSync(path,data);
  }
}

function ensureDirectoryExistence(filePath) {
  var path = require('path');
  var dirname = path.dirname(filePath);
  if (directoryExists(dirname)) {
    return true;
  }
  ensureDirectoryExistence(dirname);
  fs.mkdirSync(dirname);
}

function directoryExists(path) {
  try {
    return fs.statSync(path).isDirectory();
  }
  catch (err) {
    return false;
  }
}