Wallet/src/js/services/hwWallet.js

'use strict';

angular.module('copayApp.services')
  .factory('hwWallet', function($log,  bwcService) {
    var root = {};

    // Ledger magic number to get xPub without user confirmation
    root.ENTROPY_INDEX_PATH = "0xb11e/";
    root.UNISIG_ROOTPATH = 44;
    root.MULTISIG_ROOTPATH = 48;
    root.LIVENET_PATH = 0;

    root._err = function(data) {
      var msg = 'Hardware Wallet Error: ' + (data.error || data.message || 'unknown');
      $log.warn(msg);
      return msg;
    };


    root.getRootPath = function(device, isMultisig, account) {
      if (!isMultisig) return root.UNISIG_ROOTPATH;

      // Compat
      if (device == 'ledger' && account ==0) return root.UNISIG_ROOTPATH;

      return root.MULTISIG_ROOTPATH;
    };

    root.getAddressPath = function(device, isMultisig, account) {
      return root.getRootPath(device,isMultisig,account) + "'/" + root.LIVENET_PATH + "'/" + account + "'";
    }

    root.getEntropyPath = function(device, isMultisig, account) {
      var path;

      // Old ledger wallet compat
      if (device == 'ledger' && account == 0)
        return root.ENTROPY_INDEX_PATH  + "0'";

      return root.ENTROPY_INDEX_PATH + root.getRootPath(device,isMultisig,account) + "'/" + account + "'";
    };

    root.pubKeyToEntropySource = function(xPubKey) {
      var b = bwcService.getBitcore();
      var x = b.HDPublicKey(xPubKey);
      return x.publicKey.toString();
    };

    return root;
  });