/*
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.
*/

console.log("Testing response for an End-User who has an invalid PIN using AJAX");
var WebSocket = require('ws');
var assert = require('assert');
var http = require('http');
var fs = require('fs');
var crypto = require('crypto');

// Javascript files from the PIN pad  are included here:
eval(fs.readFileSync('../DBIG.js')+'');
eval(fs.readFileSync('../BIG.js')+'');
eval(fs.readFileSync('../FP.js')+'');
eval(fs.readFileSync('../ROM.js')+'');
eval(fs.readFileSync('../HASH.js')+'');
eval(fs.readFileSync('../RAND.js')+'');
eval(fs.readFileSync('../AES.js')+'');
eval(fs.readFileSync('../GCM.js')+'');
eval(fs.readFileSync('../ECP.js')+'');
eval(fs.readFileSync('../FP2.js')+'');
eval(fs.readFileSync('../ECP2.js')+'');
eval(fs.readFileSync('../FP4.js')+'');
eval(fs.readFileSync('../FP12.js')+'');
eval(fs.readFileSync('../PAIR.js')+'');
eval(fs.readFileSync('./MPIN.js')+'');
eval(fs.readFileSync('../MPINAuth.js')+'');

// Configuration file
eval(fs.readFileSync('./config.js')+'');

var fail = 0;
var mpin = {};
var body = "";

// Data for mpin_id
var randomUser = crypto.randomBytes(32);
var userID = randomUser.toString("hex");
var cur_date = new Date();
var issued = cur_date.toISOString();
var salt = crypto.randomBytes(16);
var salt_hex = salt.toString("hex");
// var userID = 'testUser@miracl.com';
// var issued = '2014-01-30T19:17:48Z';

if (DEBUG){console.log(issued);}

// Form MPin ID
var endUserdata = {
  "issued": issued,
  "userID": userID,
  "mobile": 1,
  "salt": salt_hex
};
var mpin_id = JSON.stringify(endUserdata);
var mpin_id_bytes = MPIN.stringtobytes(mpin_id);
hash_mpin_id_bytes = MPIN.HASH_ID(mpin_id_bytes)

mpin.mpin_id_hex = MPIN.bytestostring(mpin_id_bytes);
mpin.hash_mpin_id_hex = MPIN.bytestostring(hash_mpin_id_bytes);
if (DEBUG){console.dir(mpin);}

// Request expiry
cur_date.setSeconds(cur_date.getSeconds() + SIGNATURE_EXPIRES_OFFSET_SECONDS);
var expires = cur_date.toISOString();

// Fixed Seed
// mpin.seedValueHex = seedValueHex;
// Random Seed
var randomSeedValue = crypto.randomBytes(100);

// Turn on debug statements by setting value in config.js
MPINAuth.DEBUG = DEBUG;

// Initiaize RNG
MPINAuth.initializeRNG(randomSeedValue);

////////////////  /clientSecret (GET)  //////////////////////////////

// String to be signed
var path  = "clientSecret"
message = path + app_id + mpin.hash_mpin_id_hex + expires;
if (DEBUG){console.log("message: "+message);}

var hmac = crypto.createHmac('sha256', app_key);
hmac.setEncoding('hex');
// write in the text that you want the hmac digest for
hmac.write(message);
// you can't read from the stream until you call end()
hmac.end();
// read out hmac digest
var signature = hmac.read();
if (DEBUG){console.log("signature " + signature);}


var urlParam = "/v0.3/" + path + "?app_id=" + app_id + "&expires=" + expires + "&hash_mpin_id=" + mpin.hash_mpin_id_hex + "&signature=" + signature + "&mobile=1";
if (DEBUG){console.log("urlParam: "+urlParam);}

// options for MIRACL's Client Secret
var optionsCS1 = {
    host : baseURL,
    port : DTA_proxy,
    path : urlParam,
    method : 'GET'
};
var dataCS1;
var requestCS1 = http.request(optionsCS1, function(res) {
  try
    {
      assert.equal('200', res.statusCode, "Client Secret Request Failed");
    }
  catch(err)
    {
      txt="Error description: " + err.message;
      console.error(txt);
      console.log("TEST FAILED");
      return;
    }
  // uncomment for header details
  // console.log("headers: ", res.headers);
  res.on('data', function(data) {
      if (DEBUG){console.log("client secret data: "+data);}
      dataCS1 = data;
  });

  res.on('end', function () {
    var response = JSON.parse(dataCS1);
    mpin.cs1=response.clientSecret;
    mpin.cs2=response.clientSecret;
    time_permits();
  });
});

requestCS1.end();
requestCS1.on('error', function(e) {
  console.error(e);
});


////////////////  /timePermit (GET)  //////////////////////////////

function time_permits()
{
  if (DEBUG){console.log("Request Time Permit");}

  var path  = "timePermit"
  // String to be signed
  message = mpin.hash_mpin_id_hex;
  if (DEBUG){console.log("message: "+message);}

  var hmac = crypto.createHmac('sha256', app_key);
  hmac.setEncoding('hex');
  // write in the text that you want the hmac digest for
  hmac.write(message);
  // you can't read from the stream until you call end()
  hmac.end();
  // read out hmac digest
  var signature = hmac.read();
  if (DEBUG){console.log("signature " + signature);}

  var urlParam = "/v0.3/" + path + "?app_id=" + app_id + "&hash_mpin_id=" + mpin.hash_mpin_id_hex + "&signature=" + signature + "&mobile=1";
  if (DEBUG){console.log("urlParam: "+urlParam);}

  // options for GET
  var optionsTP1 = {
      host : baseURL,
      port : DTA_proxy,
      path : urlParam,
      method : 'GET'
  };
  var dataTP1;
  var requestTP1 = http.request(optionsTP1, function(res) {
    try
      {
        assert.equal('200', res.statusCode, "Time Permit Request Failed");
      }
    catch(err)
      {
        txt="Error description: " + err.message;
        console.error(txt);
        console.log("TEST FAILED");
        return;
      }
    res.on('data', function(data) {
      dataTP1 = data;
    });

    res.on('end', function () {
      var response = JSON.parse(dataTP1);
      mpin.tp1=response.timePermit;
      mpin.tp2=response.timePermit;
      pass1();
    });

  });

  requestTP1.end();
  requestTP1.on('error', function(e) {
    console.error(e);
  });
}

// Pass one request to M-Pin Auth server
function pass1()
{
  if (DEBUG){console.log("Perform Pass One");}

  // Add client secret shares
  mpin.client_secret_hex = MPINAuth.addShares(mpin.cs1, mpin.cs2);

  // Add time permit shares
  mpin.time_permit_hex = MPINAuth.addShares(mpin.tp1, mpin.tp2);

  // Create MPin Token
  var PIN1 = 1234;
  mpin.token_hex = MPINAuth.calculateMPinToken(mpin.mpin_id_hex, PIN1, mpin.client_secret_hex);
  if (DEBUG){console.log("mpin.token_hex " + mpin.token_hex);}

  var date=MPIN.today();
  var PIN2 = 1235;
  var request =  MPINAuth.pass1Request(mpin.mpin_id_hex, mpin.token_hex, mpin.time_permit_hex, PIN2, date, null);

  // PASS1 REQUEST
  body = JSON.stringify(request);
  if (DEBUG){console.log("PASS 1 Request" + body);}

  var path  = "/pass1"

  // prepare the header
  var postHeaders = {
      'Content-Type' : 'application/json',
      'Content-Length' : Buffer.byteLength(body, 'utf8')
  };

  // options
  var optionsPass1 = {
      host : baseURL,
      port : MPinAuthenticationServer,
      path : path,
      method : 'POST',
      headers : postHeaders
  };

  var data;
  var requestPass1 = http.request(optionsPass1, function(res) {

    res.on('data', function(data) {
      dataPass1 = data;
    });

    res.on('end', function () {
      var response = JSON.parse(dataPass1);
      if (DEBUG){console.log("PASS 1 Response: " + dataPass1);}
      pass2(response.y);
    });

  });

  requestPass1.write(body);
  requestPass1.end();
  requestPass1.on('error', function(e) {
    console.error(e);
  });
}


// Pass two request to M-Pin Auth server
function pass2(y)
{
  if (DEBUG){console.log("Perform Pass Two");}

  var path  = "/pass2"

  // Compute PASS2 request
  // Set OTP switch
  var requestOTP = 1;
  // Set WID
  var accessNumber = 123456;
  PIN2 = 1234;
  var request = MPINAuth.pass2Request(y, requestOTP, accessNumber);
  request.mpin_id = mpin.mpin_id_hex;

  // PASS2 REQUEST
  body = JSON.stringify(request);
  if (DEBUG){console.log("PASS 2 Request" + body);}


  // prepare the header
  var postHeaders = {
      'Content-Type' : 'application/json',
      'Content-Length' : Buffer.byteLength(body, 'utf8')
  };

  // options
  var optionsPass2 = {
      host : baseURL,
      port : MPinAuthenticationServer,
      path : path,
      method : 'POST',
      headers : postHeaders
  };

  var data;
  var requestPass2 = http.request(optionsPass2, function(res) {

    res.on('data', function(data) {
      dataPass2 = data;
    });

    res.on('end', function () {
      var response = JSON.parse(dataPass2);
      // PASS2 RESPONSE
      if (DEBUG){console.log("PASS 2 Response: " + dataPass2);}
      verify(response);
    });

  });

  requestPass2.write(body);
  requestPass2.end();
  requestPass2.on('error', function(e) {
    console.error(e);
  });
}


function verify(response)
{
  if (DEBUG){console.log("Request an auth token from RPS");}
  if (DEBUG){console.dir(response);}
  var path  = "/token";
  var urlParam = path + "?mpin_id_hex=" + mpin.mpin_id_hex;
  if (DEBUG){console.log("urlParam: "+urlParam)};

  // options for GET
  var optionsToken = {
      host : baseURL,
      port : MPinRPS,
      path : urlParam,
      method : 'GET'
  };
  var dataToken;
  var requestToken = http.request(optionsToken, function(res) {

    res.on('data', function(data) {
      dataToken = data;
    });

    res.on('end', function () {
      var response = JSON.parse(dataToken);
      if (DEBUG){console.dir(response); };
      try
        {
          assert.equal('-19', response.token.successCode, "Authentication Failed");
        }
      catch(err)
        {
          txt="Error description: " + err.message;
          console.error(txt);
          console.log("TEST FAILED");
          return;
        }
      console.log("TEST PASSED");
    });

  });

  requestToken.end();
  requestToken.on('error', function(e) {
    console.error(e);
  });
}