WIP trezor support, wallet creation working

src/js/services/trezor.js

@@ -0,0 +1,114 @@
+'use strict';
+
+angular.module('copayApp.services')
+  .factory('trezor', function($log, $timeout, bwcService, gettext, lodash) {
+    var root = {};
+
+    root.ENTROPY_INDEX_PATH = "0xb11e/";
+    root.callbacks = {};
+
+    root.getEntropySource = function(account, callback) {
+      var path = root.ENTROPY_INDEX_PATH + account + "'";
+      var xpub = root.getXPubKey(path, function(data) {
+        if (!data.success) {
+          $log.warn(data.message);
+          return callback(data);
+        }
+
+        var b = bwcService.getBitcore();
+
+        var x = b.HDPublicKey(data.xpubkey);
+        data.entropySource = x.publicKey.toString();
+        return callback(data);
+      });
+    };
+
+    root.getXPubKeyForAddresses = function(account, callback) {
+      return root.getXPubKey(root._getPath(account), callback);
+    };
+
+    root.getXPubKey = function(path, callback) {
+      $log.debug('TREZOR deriving xPub path:', path);
+      TrezorConnect.getXPubKey(path, callback);
+    };
+
+
+    root.getInfoForNewWallet = function(account, callback) {
+      var opts = {};
+      root.getEntropySource(account, function(data) {
+        if (!data.success) {
+          $log.warn(data.message);
+          return callback(data.message);
+        }
+        opts.entropySource = data.entropySource;
+        $log.debug('Waiting TREZOR to settle...');
+        $timeout(function() {
+          root.getXPubKeyForAddresses(account, function(data) {
+            if (!data.success) {
+              $log.warn(data.message);
+              return callback(data);
+            }
+            opts.extendedPublicKey = data.xpubkey;
+            opts.externalSource = 'trezor';
+            opts.externalIndex = account;
+            console.log('[trezor.js.51:opts:]', opts); //TODO
+            return callback(null, opts);
+          });
+        }, 5000);
+      });
+    };
+
+
+    root.signTx = function(txp, account, callback) {
+      if (txp.type != 'simple')
+        return callback('Only simple TXs are supported in TREZOR');
+
+      console.log('[trezor.js.90:txp:]', txp); //TODO
+      if (txp.addressType == 'P2PKH') {
+        var tx = bwcService.getUtils().buildTx(txp);
+
+        // spend one change output
+        var inputs = lodash.map(txp.inputs, function(i){
+          var pathArr = i.path.split('/');
+console.log('[trezor.js.72:pathArr:]',pathArr); //TODO
+          var n = [44 | 0x80000000, 0 | 0x80000000, account | 0x80000000, parseInt(pathArr[1]) , parseInt(pathArr[2])];
+          return {
+            address_n: n,
+            prev_index: i.vout,
+            prev_hash: i.txid,
+          };
+        });
+console.log('[trezor.js.68:inputs:]',inputs); //TODO
+
+        var pathArr = txp.changeAddress.path.split('/');
+console.log('[trezor.js.82:pathArr:]',pathArr); //TODO
+        var n = [44 | 0x80000000, 0 | 0x80000000, account | 0x80000000, parseInt(pathArr[1]) , parseInt(pathArr[2])];
+        // send to 1 address output and one change output
+        var outputs = [{
+          address_n: n,
+          amount: txp.amount - txp.fee,
+          script_type: 'PAYTOADDRESS'
+        }, {
+          address: txp.toAddress, 
+          amount: txp.amount,
+          script_type: 'PAYTOADDRESS'
+        }];
+console.log('[trezor.js.84:outputs:]',outputs); //TODO
+
+        TrezorConnect.signTx(inputs, outputs, function(result) {
+          console.log('[trezor.js.78:result:]', result); //TODO
+          callback(result);
+        });
+      } else {
+        var msg = 'P2SH wallets are not supported with TREZOR';
+        $log.error(msg);
+        return callback(msg);
+      }
+    }
+
+    root._getPath = function(account) {
+      return "44'/0'/" + account + "'";
+    }
+
+    return root;
+  });