support sending funds to external wallet

lib/plugins/wallet/geth/geth.js

@@ -4,6 +4,7 @@ const Web3 = require('web3')
 const web3 = new Web3()
 const hdkey = require('ethereumjs-wallet/hdkey')
 const Tx = require('ethereumjs-tx')
+const util = require('ethereumjs-util')
 const pify = require('pify')
 
 const coinUtils = require('../../../coin-utils')
@@ -27,7 +28,8 @@ module.exports = {
   defaultAddress,
   supportsHd: true,
   newFunding,
-  privateKey
+  privateKey,
+  isStrictAddress
 }
 
 if (!web3.isConnected()) {
@@ -40,6 +42,10 @@ function privateKey (account) {
   return defaultWallet(account).getPrivateKey()
 }
 
+function isStrictAddress (cryptoCode, toAddress) {
+  return cryptoCode === 'ETH' && util.isValidChecksumAddress(toAddress)
+}
+
 function sendCoins (account, toAddress, cryptoAtoms, cryptoCode) {
   return generateTx(toAddress, defaultWallet(account), cryptoAtoms, false)
     .then(pify(web3.eth.sendRawTransaction))

lib/wallet.js

@@ -8,7 +8,6 @@ const fs = pify(require('fs'))
 
 const options = require('./options')
 const ph = require('./plugin-helper')
-const logger = require('./logger')
 
 const FETCH_INTERVAL = 5000
 const INSUFFICIENT_FUNDS_CODE = 570
@@ -153,6 +152,16 @@ function cryptoNetwork (settings, cryptoCode) {
   return wallet.cryptoNetwork(account, cryptoCode)
 }
 
+function isStrictAddress (settings, cryptoCode, toAddress) {
+  // Note: For now, only for wallets that specifically check for this.
+
+  return fetchWallet(settings, cryptoCode)
+    .then(r => {
+      if (!r.wallet.isStrictAddress) return true
+      return r.wallet.isStrictAddress(cryptoCode, toAddress)
+    })
+}
+
 const balance = mem(_balance, {
   maxAge: FETCH_INTERVAL,
   cacheKey: (settings, cryptoCode) => cryptoCode
@@ -163,6 +172,7 @@ module.exports = {
   sendCoins,
   newAddress,
   getStatus,
+  isStrictAddress,
   sweep,
   isHd,
   newFunding,