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PayPro.js
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PayPro.js
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'use strict';
var imports = require('soop').imports();
var protobufjs = protobufjs || require('protobufjs/dist/ProtoBuf');
// BIP 70 - payment protocol
function PayPro() {
this.messageType = null;
this.message = null;
}
PayPro.constants = {};
PayPro.PAYMENT_REQUEST_MAX_SIZE = 50000;
PayPro.PAYMENT_MAX_SIZE = 50000;
PayPro.PAYMENT_ACK_MAX_SIZE = 60000;
PayPro.PAYMENT_REQUEST_CONTENT_TYPE = "application/bitcoin-paymentrequest";
PayPro.PAYMENT_CONTENT_TYPE = "application/bitcoin-payment";
PayPro.PAYMENT_ACK_CONTENT_TYPE = "application/bitcoin-paymentack";
PayPro.proto = {};
PayPro.proto.Output = "message Output {\
optional uint64 amount = 1 [default = 0];\
optional bytes script = 2;\
}\n";
PayPro.proto.PaymentDetails = "message PaymentDetails {\
optional string network = 1 [default = \"main\"];\
repeated Output outputs = 2;\
required uint64 time = 3;\
optional uint64 expires = 4;\
optional string memo = 5;\
optional string payment_url = 6;\
optional bytes merchant_data = 7;\
}\n";
PayPro.proto.PaymentRequest = "message PaymentRequest {\
optional uint32 payment_details_version = 1 [default = 1];\
optional string pki_type = 2 [default = \"none\"];\
optional bytes pki_data = 3;\
required bytes serialized_payment_details = 4;\
optional bytes signature = 5;\
}\n";
PayPro.proto.Payment = "message Payment {\
optional bytes merchant_data = 1;\
repeated bytes transactions = 2;\
repeated Output refund_to = 3;\
optional string memo = 4;\
}\n";
PayPro.proto.PaymentACK = "message PaymentACK {\
required Payment payment = 1;\
optional string memo = 2;\
}\n";
PayPro.proto.X509Certificates = "message X509Certificates {\
repeated bytes certificate = 1;\
}\n";
PayPro.proto.all = "";
PayPro.proto.all = PayPro.proto.all + PayPro.proto.Output;
PayPro.proto.all = PayPro.proto.all + PayPro.proto.PaymentDetails;
PayPro.proto.all = PayPro.proto.all + PayPro.proto.PaymentRequest;
PayPro.proto.all = PayPro.proto.all + PayPro.proto.Payment;
PayPro.proto.all = PayPro.proto.all + PayPro.proto.PaymentACK;
PayPro.proto.all = PayPro.proto.all + PayPro.proto.X509Certificates;
PayPro.builder = protobufjs.loadProto(PayPro.proto.all);
PayPro.Output = PayPro.builder.build("Output");
PayPro.PaymentDetails = PayPro.builder.build("PaymentDetails");
PayPro.PaymentRequest = PayPro.builder.build("PaymentRequest");
PayPro.Payment = PayPro.builder.build("Payment");
PayPro.PaymentACK = PayPro.builder.build("PaymentACK");
PayPro.X509Certificates = PayPro.builder.build("X509Certificates");
PayPro.prototype.makeOutput = function(obj) {
this.messageType = 'Output';
this.message = new PayPro.Output();
this.setObj(obj);
return this;
};
PayPro.prototype.makePaymentDetails = function(obj) {
this.messageType = 'PaymentDetails';
this.message = new PayPro.PaymentDetails();
this.setObj(obj);
return this;
};
PayPro.prototype.makePaymentRequest = function(obj) {
this.messageType = 'PaymentRequest';
this.message = new PayPro.PaymentRequest();
this.setObj(obj);
return this;
};
PayPro.prototype.makePayment = function(obj) {
this.messageType = 'Payment';
this.message = new PayPro.Payment();
this.setObj(obj);
return this;
};
PayPro.prototype.makePaymentACK = function(obj) {
this.messageType = 'Payment';
this.message = new PayPro.PaymentACK();
this.setObj(obj);
return this;
};
PayPro.prototype.makeX509Certificates = function(obj) {
this.messageType = 'X509Certificates';
this.message = new PayPro.X509Certificates();
this.setObj(obj);
return this;
};
PayPro.prototype.isValidSize = function() {
var s = this.serialize();
if (this.messageType == 'PaymentRequest')
return s.length < PayPro.PAYMENT_REQUEST_MAX_SIZE;
if (this.messageType == 'Payment')
return s.length < PayPro.PAYMENT_MAX_SIZE;
if (this.messageType == 'PaymentACK')
return s.length < PayPro.PAYMENT_ACK_MAX_SIZE;
return true;
};
PayPro.prototype.getContentType = function() {
if (this.messageType == 'PaymentRequest')
return PayPro.PAYMENT_REQUEST_CONTENT_TYPE;
if (this.messageType == 'Payment')
return PayPro.PAYMENT_CONTENT_TYPE;
if (this.messageType == 'PaymentACK')
return PayPro.PAYMENT_ACK_CONTENT_TYPE;
throw new Error('No known content type for this message type');
};
PayPro.prototype.set = function(key, val) {
this.message.set(key, val);
return this;
};
PayPro.prototype.get = function(key) {
var v = this.message.get(key);
//protobuf supports longs, javascript naturally does not
//convert longs (see long.js, e.g. require('long')) to Numbers
if (typeof v.low !== 'undefined' && typeof v.high !== 'undefined')
return v.toInt();
return v;
};
PayPro.prototype.setObj = function(obj) {
for (var key in obj) {
if (obj.hasOwnProperty(key)) {
var val = obj[key];
this.message.set(key, val);
}
}
return this;
};
PayPro.prototype.serialize = function() {
//protobufjs returns either a Buffer or an ArrayBuffer
//but we always want a Buffer (which browserify understands, browser or no)
var maybebuf = this.message.toBuffer();
var buf = (Buffer.isBuffer(maybebuf)) ? maybebuf : new Buffer(new Uint8Array(maybebuf));
return buf;
};
PayPro.prototype.deserialize = function(buf, messageType) {
this.messageType = messageType || this.messageType;
if (!this.messageType)
throw new Error('Must specify messageType');
this.message = PayPro[this.messageType].decode(buf);
return this;
};
module.exports = require('soop')(PayPro);