swiftpass-payment/lib/util.js

swiftpass payment

var xml2js = require('xml2js');

exports.buildXML = function (json) {
    var builder = new xml2js.Builder();
    return builder.buildObject(json);
};
exports.buildSignXML = function (json) {
    var xmlBody = Object.keys(json).sort().filter(function (key) {
            return json[key] !== undefined && json[key] !== '' && ['pfx', 'partner_key', 'sign', 'key'].indexOf(key) < 0;
        }).map(function (key) {
            return '<' + key + '><![CDATA[' + json[key] + ']]></' + key + '>';
        }).join('') + '<sign>' + json.sign + '</sign>';
    return '<xml>' + xmlBody + '</xml>';
};

exports.parseXML = function (xml, fn) {
    var parser = new xml2js.Parser({trim: true, explicitArray: false, explicitRoot: false});
    parser.parseString(xml, fn || function (err, result) {
        });
};

exports.parseRaw = function () {
    return function (req, res, next) {
        var buffer = [];
        req.on('data', function (trunk) {
            buffer.push(trunk);
        });
        req.on('end', function () {
            req.rawbody = Buffer.concat(buffer).toString('utf8');
            next();
        });
        req.on('error', function (err) {
            next(err);
        });
    }
};

exports.pipe = function (stream, fn) {
    var buffers = [];
    stream.on('data', function (trunk) {
        buffers.push(trunk);
    });
    stream.on('end', function () {
        fn(null, Buffer.concat(buffers));
    });
    stream.once('error', fn);
};

exports.mix = function () {
    var root = arguments[0];
    if (arguments.length == 1) {
        return root;
    }
    for (var i = 1; i < arguments.length; i++) {
        for (var k in arguments[i]) {
            root[k] = arguments[i][k];
        }
    }
    return root;
};

exports.generateNonceString = function (length) {
    var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
    var maxPos = chars.length;
    var noceStr = "";
    for (var i = 0; i < (length || 32); i++) {
        noceStr += chars.charAt(Math.floor(Math.random() * maxPos));
    }
    return noceStr;
};