iso7816/lib/command-apdu.js

'use strict';

var _hexify = require("hexify");

var _hexify2 = _interopRequireDefault(_hexify);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function CommandApdu(obj) {

    var size = obj.size;
    var cla = obj.cla;
    var ins = obj.ins;
    var p1 = obj.p1;
    var p2 = obj.p2;
    var data = obj.data;
    var le = obj.le || 0;
    var lc = void 0;

    // case 1
    if (!size && !data && !le) {
        //le = -1;
        //console.info('case 1');
        size = 4;
    }
    // case 2
    else if (!size && !data) {
            //console.info('case 2');
            size = 4 + 2;
        }

        // case 3
        else if (!size && !le) {
                //console.info('case 3');
                size = data.length + 5 + 4;
                //le = -1;
            }

            // case 4
            else if (!size) {
                    //console.info('case 4');
                    size = data.length + 5 + 4;
                }

    // set data
    if (data) {
        lc = data.length;
    } else {
        //lc = 0;
    }

    this.bytes = [];
    this.bytes.push(cla);
    this.bytes.push(ins);
    this.bytes.push(p1);
    this.bytes.push(p2);

    if (data) {
        this.bytes.push(lc);
        this.bytes = this.bytes.concat(data);
    }
    this.bytes.push(le);
}

CommandApdu.prototype.toString = function () {
    return _hexify2.default.toHexString(bytes);
};

CommandApdu.prototype.toByteArray = function () {
    return this.bytes;
};

CommandApdu.prototype.toBuffer = function () {
    return new Buffer(this.bytes);
};

CommandApdu.prototype.setLe = function (le) {
    this.bytes.pop();
    this.bytes.push(le);
};

function create(obj) {
    return new CommandApdu(obj);
}

module.exports = create;