hmmac issue #10 workaround

workaround.js

// https://github.com/cmawhorter/hmmac/issues/10

var app = require('express')();
var Hmmac = require('hmmac');
var AWS = require('aws-sdk');

var accessKeyId = 's3box';
var secretAccessKey = 's3box';

var hmmac = new Hmmac({
    scheme: Hmmac.schemes.load('aws4'),
    acceptableDateSkew: false,
    debug: 1,
    schemeConfig: {
        region: 's3box',
        service: 's3'
    },
    credentialProvider: function(key, callback) {
        if(key !== accessKeyId) {
            return callback(null)
        } else {
            callback({ key: accessKeyId, secret: secretAccessKey});
        }
    }
});



function convertAwsISO8601DateToStd(dt) {
  // 20111014T235959Z
  var parts = dt.split('Z')[0].split('T')
    , d = parts[0]
    , t = parts[1]
    , dYear = d.substr(0, 4)
    , dMonth = d.substr(4, 2)
    , dDay = d.substr(6, 2)
    , tHour = t.substr(0, 2)
    , tMinute = t.substr(2, 2)
    , tSecond = t.substr(4, 2)
    , fixedDate = [ dYear, dMonth, dDay ].join('-')
    , fixedTime = [ tHour, tMinute, tSecond ].join(':')
    , fixedDateTime = [ fixedDate, 'T', fixedTime, 'Z' ].join('');

  return new Date(fixedDateTime).toISOString();
}

app.use(function (req, res, next) {
    req.headers['date'] = convertAwsISO8601DateToStd(req.headers['x-amz-date']);
    hmmac.validate(req, function(valid) {
        console.log('This should be valid', valid);
    });
});

var server = app.listen(3000, function () {
    AWS.config.update({
        "accessKeyId": accessKeyId,
        "secretAccessKey": secretAccessKey,
        "region": "s3box",
        "endpoint": "127.0.0.1:3000",
        "maxRetries": 0,
        "s3ForcePathStyle": true,
        "sslEnabled": false,
        "signatureVersion": "v4"
    });

    var s3bucket = new AWS.S3({params: {Bucket: 'fooobar'}});
    s3bucket.createBucket(function(err) {
        console.log(err);
    });

});