Merge pull request #4 from matiu/feat/addresses

Feat/addresses

lib/model/addressable.js

@@ -0,0 +1,34 @@
+var _ = require('lodash');
+var HDPath = require('./hdpath');
+
+function Addressable (opts) {
+  this.receiveAddressIndex = 0;
+  this.changeAddressIndex = 0;
+  this.copayerIndex = ( opts && _.isNumber(opts.copayerIndex)) ? opts.copayerIndex : HDPath.SHARED_INDEX;
+};
+
+
+Addressable.prototype.fromObj = function (obj) {
+  this.receiveAddressIndex = obj.receiveAddressIndex; 
+  this.changeAddressIndex = obj.changeAddressIndex;
+  this.copayerIndex = obj.copayerIndex;
+};
+
+Addressable.prototype.addAddress = function (isChange) {
+  if (isChange) {
+    this.changeAddressIndex++;
+  } else {
+    this.receiveAddressIndex++;
+  }
+};
+
+Addressable.prototype.getCurrentAddressPath = function (isChange) {
+  return HDPath.Branch(isChange  ? this.changeAddressIndex : this.receiveAddressIndex, isChange, this.copayerIndex);
+};
+
+Addressable.prototype.getNewAddressPath = function (isChange) {
+  this.addAddress(isChange);
+  return this.getCurrentAddressPath(isChange);
+};
+
+module.exports = Addressable;

lib/model/copayer.js

@@ -1,14 +1,21 @@
 'use strict';
 
 var _ = require('lodash');
+var util = require('util');
+
 var Bitcore = require('bitcore');
 var HDPublicKey = Bitcore.HDPublicKey;
 
+var Addressable = require('./Addressable');
+
+
 var VERSION = '1.0.0';
 var MESSAGE_SIGNING_PATH = "m/1/0";
 
 function Copayer(opts) {
   opts = opts || {};
+  opts.copayerIndex = opts.copayerIndex ||  0;
+  Copayer.super_.apply(this, [opts]);
 
   this.version = VERSION;
 	this.createdOn = Math.floor(Date.now() / 1000);
@@ -16,11 +23,11 @@ function Copayer(opts) {
 	this.name = opts.name;
 	this.xPubKey = opts.xPubKey;
 	this.xPubKeySignature = opts.xPubKeySignature;                    // So third parties can check independently
-  if (opts.xPubKey) {
+  this.signingPubKey = opts.signingPubKey || this.getSigningPubKey();
-    this.signingPubKey = this.getSigningPubKey();
-  }
 };
 
+util.inherits(Copayer, Addressable);
+
 Copayer.prototype.getSigningPubKey = function () {
   if (!this.xPubKey) return null;
   return HDPublicKey.fromString(this.xPubKey).derive(MESSAGE_SIGNING_PATH).publicKey.toString();
@@ -29,7 +36,6 @@ Copayer.prototype.getSigningPubKey = function () {
 Copayer.fromObj = function (obj) {
   var x = new Copayer();
 
-  x.version = obj.version;
   x.createdOn = obj.createdOn;
   x.id = obj.id;
   x.name = obj.name;
@@ -37,8 +43,8 @@ Copayer.fromObj = function (obj) {
   x.xPubKeySignature = obj.xPubKeySignature;
   x.signingPubKey = obj.signingPubKey;
 
+  Wallet.super_.prototype.fromObj.apply(this, [obj]);
   return x;
 };
 
-
 module.exports = Copayer;

lib/model/hdpath.js

@@ -0,0 +1,116 @@
+'use strict';
+
+// 90.2% typed (by google's closure-compiler account)
+
+var preconditions = require('preconditions').singleton();
+var _ = require('lodash');
+
+/**
+ * @namespace
+ * @desc
+ * HDPath contains helper functions to handle BIP32 branches as
+ * Copay uses them.
+ * Based on https://github.com/maraoz/bips/blob/master/bip-NNNN.mediawiki
+ * <pre>
+ * m / purpose' / copayerIndex / change:boolean / addressIndex
+ * </pre>
+ */
+var HDPath = {};
+
+/**
+ * @desc Copay's BIP45 purpose code
+ * @const
+ * @type number
+ */
+HDPath.PURPOSE = 45;
+
+/**
+ * @desc Maximum number for non-hardened values (BIP32)
+ * @const
+ * @type number
+ */
+HDPath.MAX_NON_HARDENED = 0x80000000 - 1;
+
+/**
+ * @desc Shared Index: used for creating addresses for no particular purpose
+ * @const
+ * @type number
+ */
+HDPath.SHARED_INDEX = HDPath.MAX_NON_HARDENED - 0;
+
+/**
+ * @desc ???
+ * @const
+ * @type number
+ */
+HDPath.ID_INDEX = HDPath.MAX_NON_HARDENED - 1;
+
+/**
+ * @desc BIP45 prefix for COPAY
+ * @const
+ * @type string
+ */
+HDPath.BIP45_PUBLIC_PREFIX = 'm/' + HDPath.PURPOSE + '\'';
+
+/**
+ * @desc Retrieve a string to be used with bitcore representing a Copay branch
+ * @param {number} addressIndex - the last value of the HD derivation
+ * @param {boolean} isChange - whether this is a change address or a receive
+ * @param {number} copayerIndex - the index of the copayer in the pubkeyring
+ * @return {string} - the path for the HD derivation
+ */
+HDPath.Branch = function(addressIndex, isChange, copayerIndex) {
+  preconditions.checkArgument(_.isNumber(addressIndex));
+  preconditions.checkArgument(_.isBoolean(isChange));
+
+  var ret = 'm/' +
+    (typeof copayerIndex !== 'undefined' ? copayerIndex : HDPath.SHARED_INDEX) + '/' +
+    (isChange ? 1 : 0) + '/' +
+    addressIndex;
+  return ret;
+};
+
+/**
+ * @desc ???
+ * @param {number} addressIndex - the last value of the HD derivation
+ * @param {boolean} isChange - whether this is a change address or a receive
+ * @param {number} copayerIndex - the index of the copayer in the pubkeyring
+ * @return {string} - the path for the HD derivation
+ */
+HDPath.FullBranch = function(addressIndex, isChange, copayerIndex) {
+  preconditions.checkArgument(_.isNumber(addressIndex));
+  preconditions.checkArgument(_.isBoolean(isChange));
+
+  var sub = HDPath.Branch(addressIndex, isChange, copayerIndex);
+  sub = sub.substring(2);
+  return HDPath.BIP45_PUBLIC_PREFIX + '/' + sub;
+};
+
+/**
+ * @desc
+ * Decompose a string and retrieve its arguments as if it where a Copay address.
+ * @param {string} path - the HD path
+ * @returns {Object} an object with three keys: addressIndex, isChange, and
+ *                   copayerIndex
+ */
+HDPath.indexesForPath = function(path) {
+  preconditions.checkArgument(_.isString(path));
+
+  var s = path.split('/');
+  return {
+    isChange: s[3] === '1',
+    addressIndex: parseInt(s[4], 10),
+    copayerIndex: parseInt(s[2], 10)
+  };
+};
+
+/**
+ * @desc The ID for a shared branch
+ */
+HDPath.IdFullBranch = HDPath.FullBranch(0, false, HDPath.ID_INDEX);
+/**
+ * @desc Partial ID for a shared branch
+ */
+HDPath.IdBranch = HDPath.Branch(0, false, HDPath.ID_INDEX);
+
+module.exports = HDPath;

lib/model/wallet.js

@@ -1,11 +1,19 @@
 'use strict';
 
 var _ = require('lodash');
+var util = require('util');
 
+var Bitcore = require('bitcore');
+var BitcoreAddress = Bitcore.Address;
+
+var Address = require('./address');
 var Copayer = require('./copayer');
+var Addressable = require('./Addressable');
+
 var VERSION = '1.0.0';
 
 function Wallet(opts) {
+  Wallet.super_.apply(this, arguments);
   opts = opts || {};
 
   this.version = VERSION;
@@ -19,6 +27,7 @@ function Wallet(opts) {
   this.addressIndex = 0;
   this.copayers = [];
   this.pubKey = opts.pubKey;
+  this.isTestnet = false;
 };
 
 /* For compressed keys, m*73 + n*34 <= 496 */
@@ -36,6 +45,7 @@ Wallet.COPAYER_PAIR_LIMITS = {
   11: 1,
   12: 1,
 };
+util.inherits(Wallet, Addressable);
 
 /**
  * Get the maximum allowed number of required copayers.
@@ -54,7 +64,6 @@ Wallet.verifyCopayerLimits = function (m, n) {
 Wallet.fromObj = function (obj) {
   var x = new Wallet();
 
-  x.version = obj.version;
   x.createdOn = obj.createdOn;
   x.id = obj.id;
   x.name = obj.name;
@@ -62,12 +71,13 @@ Wallet.fromObj = function (obj) {
   x.n = obj.n;
   x.status = obj.status;
   x.publicKeyRing = obj.publicKeyRing;
-  x.addressIndex = obj.addressIndex;
   x.copayers = _.map(obj.copayers, function (copayer) {
     return new Copayer(copayer);
   });
   x.pubKey = obj.pubKey;
+  x.isTestnet = obj.isTestnet;
 
+  Wallet.super_.prototype.fromObj.apply(this, [obj]);
   return x;
 };
 
@@ -84,4 +94,26 @@ Wallet.prototype.getCopayer = function (copayerId) {
   return _.find(this.copayers, { id: copayerId });
 };
 
+
+Wallet.prototype._getBitcoreNetwork = function () {
+  return this.isTestnet ? Bitcore.Networks.testnet : Bitcore.Networks.livenet;
+};
+
+
+Wallet.prototype.createAddress = function (path) {
+
+  var publicKeys = _.map(this.copayers, function(copayer) {
+    var xpub = new Bitcore.HDPublicKey(copayer.xPubKey);
+    return xpub.derive(path).publicKey;
+  });
+
+  var bitcoreAddress = BitcoreAddress.createMultisig(publicKeys, this.m, this._getBitcoreNetwork());
+
+  return new Address({
+    address: bitcoreAddress.toString(),
+    path: path,
+  });
+};
+
+
 module.exports = Wallet;

lib/server.js

@@ -75,7 +75,7 @@ CopayServer.prototype.createWallet = function (opts, cb) {
       name: opts.name,
       m: opts.m,
       n: opts.n,
-      network: network,
+      network: opts.network || 'livenet',
       pubKey: pubKey,
     });
 
@@ -132,30 +132,28 @@ CopayServer.prototype._verifySignature = function (text, signature, pubKey) {
         return cb('Bad request');
       }
 
-      if (_.find(wallet.copayers, { xPubKey: opts.xPubKey })) return cb('Copayer already in wallet');
+      if (_.find(wallet.copayers, {
+        xPubKey: opts.xPubKey
+      })) return cb('Copayer already in wallet');
       if (wallet.copayers.length == wallet.n) return cb('Wallet full');
+
       var copayer = new Copayer({
         id: opts.id,
         name: opts.name,
         xPubKey: opts.xPubKey,
         xPubKeySignature: opts.xPubKeySignature,
+        copayerIndex: wallet.copayers.length,
       });
       
       wallet.addCopayer(copayer);
 
       self.storage.storeWallet(wallet, function (err) {
-        if (err) return cb(err);
+        return cb(err);
-
-        return cb();
       });
     });
   });
 };
 
-CopayServer.prototype._doCreateAddress = function (pkr, index, isChange) {
-  throw 'not implemented';
-};
-
 /**
  *
  * TODO: How this is going to be authenticated?
@@ -168,6 +166,7 @@ CopayServer.prototype._doCreateAddress = function (pkr, index, isChange) {
  */
  CopayServer.prototype.createAddress = function (opts, cb) {
   var self = this;
+  var isChange = opts.isChange || false;
 
   Utils.checkRequired(opts, ['walletId', 'isChange']);
 
@@ -175,11 +174,15 @@ CopayServer.prototype._doCreateAddress = function (pkr, index, isChange) {
     self.getWallet({ id: opts.walletId }, function (err, wallet) {
       if (err) return cb(err);
     
-      var index = wallet.addressIndex++;
+      var copayer = wallet.copayers[0]; // TODO: Assign copayer from authentication.
+
+      var path = copayer.getNewAddressPath(isChange);
+
       self.storage.storeWallet(wallet, function(err) {
         if (err) return cb(err);
 
-        var address = self._doCreateAddress(wallet.publicKeyRing, index, opts.isChange);
+        var address = wallet.createAddress(path);
+
         self.storage.storeAddress(opts.walletId, address, function(err) {
           if (err) return cb(err);
 
@@ -267,7 +270,6 @@ CopayServer.prototype._getUtxos = function (opts, cb) {
             dictionary[input].locked = true;
           }
         });
-        
         return cb(null, utxos);
       });
     });
@@ -460,7 +462,6 @@ CopayServer.prototype.getPendingTxs = function (opts, cb) {
     if (err) return cb(err);
 
     var pending = _.filter(txps, { status: 'pending' });
-
     return cb(null, pending);
   });
 };

test/copayer.js

@@ -0,0 +1,28 @@
+'use strict';
+
+var _ = require('lodash');
+var chai = require('chai');
+var sinon = require('sinon');
+var should = chai.should();
+var Copayer = require('../lib/model/copayer');
+
+
+describe('Copayer', function() {
+
+  describe('#getCurrentAddressPath', function() {
+    it('return a valid BIP32 path for defaut copayer Index', function() {
+      var c = new Copayer();
+      c.getCurrentAddressPath(false).should.equal('m/0/0/0');
+      c.getCurrentAddressPath(true).should.equal('m/0/1/0');
+    });
+
+    it('return a valid BIP32 path for given index', function() {
+      var c = new Copayer({
+        copayerIndex: 4
+      });
+      c.getCurrentAddressPath(false).should.equal('m/4/0/0');
+      c.getCurrentAddressPath(true).should.equal('m/4/1/0');
+    });
+  });
+
+});

test/hdpath.js

@@ -0,0 +1,71 @@
+'use strict';
+
+var HDPath = require('../lib/model/hdpath');
+
+describe('HDPath model', function() {
+  it('should have the correct constants', function() {
+    HDPath.MAX_NON_HARDENED.should.equal(Math.pow(2, 31) - 1);
+    HDPath.SHARED_INDEX.should.equal(HDPath.MAX_NON_HARDENED);
+    HDPath.ID_INDEX.should.equal(HDPath.SHARED_INDEX - 1);
+    HDPath.IdFullBranch.should.equal('m/45\'/2147483646/0/0');
+  });
+
+  it('should get the correct branches', function() {
+    // shared branch (no cosigner index specified)
+    HDPath.FullBranch(0, false).should.equal('m/45\'/2147483647/0/0');
+
+    // copayer 0, address 0, external address (receiving)
+    HDPath.FullBranch(0, false, 0).should.equal('m/45\'/0/0/0');
+
+    // copayer 0, address 10, external address (receiving)
+    HDPath.FullBranch(0, false, 10).should.equal('m/45\'/10/0/0');
+
+    // copayer 0, address 0, internal address (change)
+    HDPath.FullBranch(0, true, 0).should.equal('m/45\'/0/1/0');
+
+    // copayer 0, address 10, internal address (change)
+    HDPath.FullBranch(10, true, 0).should.equal('m/45\'/0/1/10');
+
+    // copayer 7, address 10, internal address (change)
+    HDPath.FullBranch(10, true, 7).should.equal('m/45\'/7/1/10');
+  });
+
+  [
+    ['m/45\'/0/0/0', {
+      index: 0,
+      isChange: false
+    }],
+    ['m/45\'/0/0/1', {
+      index: 1,
+      isChange: false
+    }],
+    ['m/45\'/0/0/2', {
+      index: 2,
+      isChange: false
+    }],
+    ['m/45\'/0/1/0', {
+      index: 0,
+      isChange: true
+    }],
+    ['m/45\'/0/1/1', {
+      index: 1,
+      isChange: true
+    }],
+    ['m/45\'/0/1/2', {
+      index: 2,
+      isChange: true
+    }],
+    ['m/45\'/0/0/900', {
+      index: 900,
+      isChange: false
+    }],
+  ].forEach(function(datum) {
+    var path = datum[0];
+    var result = datum[1];
+    it('should get the correct indexes for path ' + path, function() {
+      var i = HDPath.indexesForPath(path);
+      i.addressIndex.should.equal(result.index);
+      i.isChange.should.equal(result.isChange);
+    });
+  });
+});

test/integration.js

@@ -69,6 +69,7 @@ helpers.createAndJoinWallet = function(id, m, n, cb) {
     if (err) return cb(err);
 
     async.each(_.range(1, n + 1), function(i, cb) {
+
       var copayerOpts = {
         walletId: id,
         id: '' + i,
@@ -76,11 +77,13 @@ helpers.createAndJoinWallet = function(id, m, n, cb) {
         xPubKey: someXPubKeys[i - 1],
         xPubKeySignature: someXPubKeysSignatures[i - 1],
       };
+
       server.joinWallet(copayerOpts, function(err) {
         return cb(err);
       });
     }, function(err) {
       if (err) return cb(err);
+
       server.getWallet({
         id: id,
         includeCopayers: true
@@ -461,9 +464,22 @@ describe('Copay server', function() {
       });
     });
 
+    it('should set index in 1-1 wallet creation.', function(done) {
+      helpers.createAndJoinWallet('123', 1, 1, function(err, wallet) {
+        wallet.receiveAddressIndex.should.equal(0);
+        wallet.changeAddressIndex.should.equal(0);
+        wallet.copayerIndex.should.equal(0x80000000 - 1);
 
+        var copayer = wallet.copayers[0];
+        copayer.receiveAddressIndex.should.equal(0);
+        copayer.changeAddressIndex.should.equal(0);
+        copayer.copayerIndex.should.equal(0);
+        done();
+      });
+    });
  
-    it('should set pkr and status = complete on last copayer joining', function(done) {
+
+    it('should set pkr and status = complete on last copayer joining (2-3)', function(done) {
       helpers.createAndJoinWallet('123', 2, 3, function(err, wallet) {
         server.getWallet({
           id: '123'
@@ -471,6 +487,12 @@ describe('Copay server', function() {
           should.not.exist(err);
           wallet.status.should.equal('complete');
           wallet.publicKeyRing.length.should.equal(3);
+          _.each([0,1,2], function(i) {
+            var copayer = wallet.copayers[i];
+            copayer.receiveAddressIndex.should.equal(0);
+            copayer.changeAddressIndex.should.equal(0);
+            copayer.copayerIndex.should.equal(i);
+          });
           done();
         });
       });
@@ -478,7 +500,6 @@ describe('Copay server', function() {
   });
 
 
-
   describe('#verifyMessageSignature', function() {
     beforeEach(function() {
       server = new CopayServer({
@@ -525,11 +546,7 @@ describe('Copay server', function() {
       });
     });
 
-    it('should create address', function(done) {
+    it('should create main address', function(done) {
-      server._doCreateAddress = sinon.stub().returns(new Address({
-        address: 'addr1',
-        path: 'path1',
-      }));
       helpers.createAndJoinWallet('123', 2, 2, function(err, wallet) {
         server.createAddress({
           walletId: '123',
@@ -537,12 +554,29 @@ describe('Copay server', function() {
         }, function(err, address) {
           should.not.exist(err);
           address.should.exist;
-          address.address.should.equal('addr1');
+          address.address.should.equal('3BPfHzwq5j72TBYtYv3Uggk3vyHFHX3QpA');
-          address.path.should.equal('path1');
+          address.path.should.equal('m/0/0/1');
           done();
         });
       });
     });
+
+
+    it('should create change address', function(done) {
+      helpers.createAndJoinWallet('123', 2, 2, function(err, wallet) {
+        server.createAddress({
+          walletId: '123',
+          isChange: true,
+        }, function(err, address) {
+          should.not.exist(err);
+          address.should.exist;
+          address.address.should.equal('39Dzj5mBJWvzH7bDfmYzXDvTbZS5HdQ4a4');
+          address.path.should.equal('m/0/1/1');
+          done();
+        });
+      });
+    });
+
   });
 
   describe('#createTx', function() {

test/wallet.js

@@ -0,0 +1,91 @@
+'use strict';
+
+var _ = require('lodash');
+var chai = require('chai');
+var sinon = require('sinon');
+var should = chai.should();
+var Wallet = require('../lib/model/wallet');
+
+
+describe('Wallet', function() {
+
+  describe('#fromObj', function() {
+    it('read a wallet', function() {
+      var w = Wallet.fromObj(testWallet);
+      w.status.should.equal('complete');
+    });
+  });
+  describe('#createAddress', function() {
+    it('create an address', function() {
+      var w = Wallet.fromObj(testWallet);
+      var a = w.createAddress('m/1/1');
+      a.address.should.equal('32HG4C9tWMhWoDoTHFvjmbV5sUJMjWs4vL');
+      a.path.should.equal('m/1/1');
+      a.createdOn.should.be.above(1);
+    });
+  });
+  describe('#getCurrentAddressPath', function() {
+    it('return a valid BIP32 path for defaut wallet Index', function() {
+      var w = new Wallet();
+      w.getCurrentAddressPath(false).should.equal('m/2147483647/0/0');
+      w.getCurrentAddressPath(true).should.equal('m/2147483647/1/0');
+    });
+
+
+  });
+
+});
+
+
+var testWallet = {
+  receiveAddressIndex: 0,
+  changeAddressIndex: 0,
+  copayerIndex: 2147483647,
+  createdOn: 1422904188,
+  id: '123',
+  name: '123 wallet',
+  m: 2,
+  n: 3,
+  status: 'complete',
+  publicKeyRing: ['xpub661MyMwAqRbcFLRkhYzK8eQdoywNHJVsJCMQNDoMks5bZymuMcyDgYfnVQYq2Q9npnVmdTAthYGc3N3uxm5sEdnTpSqBc4YYTAhNnoSxCm9',
+    'xpub661MyMwAqRbcEzHgVwwxoXksq21rRNsJsn7AFy4VD4PzsEmjjWwsyEiTjsdQviXbqZ5yHVWJR8zFUDgUKkq4R97su3UyNo36Z8hSaCPrv6o',
+    'xpub661MyMwAqRbcFXUfkjfSaRwxJbAPpzNUvTiNFjgZwDJ8sZuhyodkP24L4LvsrgThYAAwKkVVSSmL7Ts7o9EHEHPB3EE89roAra7njoSeiMd'
+  ],
+  copayers: [{
+    receiveAddressIndex: 0,
+    changeAddressIndex: 0,
+    copayerIndex: 0,
+    createdOn: 1422904189,
+    id: '1',
+    name: 'copayer 1',
+    xPubKey: 'xpub661MyMwAqRbcFLRkhYzK8eQdoywNHJVsJCMQNDoMks5bZymuMcyDgYfnVQYq2Q9npnVmdTAthYGc3N3uxm5sEdnTpSqBc4YYTAhNnoSxCm9',
+    xPubKeySignature: '30440220192ae7345d980f45f908bd63ccad60ce04270d07b91f1a9d92424a07a38af85202201591f0f71dd4e79d9206d2306862e6b8375e13a62c193953d768e884b6fb5a46',
+    version: '1.0.0',
+    signingPubKey: '03814ac7decf64321a3c6967bfb746112fdb5b583531cd512cc3787eaf578947dc'
+  }, {
+    receiveAddressIndex: 0,
+    changeAddressIndex: 0,
+    copayerIndex: 1,
+    createdOn: 1422904189,
+    id: '2',
+    name: 'copayer 2',
+    xPubKey: 'xpub661MyMwAqRbcEzHgVwwxoXksq21rRNsJsn7AFy4VD4PzsEmjjWwsyEiTjsdQviXbqZ5yHVWJR8zFUDgUKkq4R97su3UyNo36Z8hSaCPrv6o',
+    xPubKeySignature: '30440220134d13139323ba16ff26471c415035679ee18b2281bf85550ccdf6a370899153022066ef56ff97091b9be7dede8e40f50a3a8aad8205f2e3d8e194f39c20f3d15c62',
+    version: '1.0.0',
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+  }, {
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+    changeAddressIndex: 0,
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+    createdOn: 1422904189,
+    id: '3',
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+};