support sending funds to external wallet

bin/lamassu-send-coins

@@ -0,0 +1,89 @@
+#!/usr/bin/env node
+
+const settingsLoader = require('../lib/settings-loader')
+const configManager = require('../lib/config-manager')
+const wallet = require('../lib/wallet')
+const coinUtils = require('../lib/coin-utils')
+const BN = require('../lib/bn')
+const inquirer = require('inquirer')
+const ticker = require('../lib/ticker')
+
+const [toAddress, cryptoValue, cryptoCode] = process.argv.slice(2)
+
+function computeCrypto (cryptoCode, value) {
+  try {
+    const cryptoRec = coinUtils.getCryptoCurrency(cryptoCode)
+    const unitScale = cryptoRec.unitScale
+
+    return BN(value).shift(unitScale)
+  } catch (err) {
+    return null
+  }
+}
+
+if (!toAddress || !cryptoValue || !cryptoCode) {
+  console.log('Usage: lamassu-send-coins <address> <amount> <coin>')
+  console.log('Example: lamassu-send-coins 3FUv7vKaP11idnsUKyQ2pxdWxCDMyr5HKJ 0.009 BTC')
+  process.exit(1)
+}
+
+const cryptoAtoms = computeCrypto(cryptoCode, cryptoValue)
+
+if (!cryptoAtoms) {
+  console.log(`Unsupported coin: ${cryptoCode}.\n`)
+  console.log('Usage: lamassu-send-coins <address> <amount> <coin>')
+  console.log('Example: lamassu-send-coins 3FUv7vKaP11idnsUKyQ2pxdWxCDMyr5HKJ 0.009 BTC')
+  process.exit(2)
+}
+
+console.log('Loading ticker...')
+
+settingsLoader.loadLatest()
+  .then(settings => {
+    const config = configManager.unscoped(settings.config)
+    const fiatCode = config.fiatCurrency
+
+    return wallet.isStrictAddress(settings, cryptoCode, toAddress)
+      .then(isValid => {
+        if (!isValid) {
+          console.log(`Invalid ${cryptoCode} address: ${toAddress}.`)
+          console.log('Please check your command.\n')
+          console.log('Usage: lamassu-send-coins <address> <amount> <coin>')
+          console.log('Example: lamassu-send-coins 3FUv7vKaP11idnsUKyQ2pxdWxCDMyr5HKJ 0.009 BTC')
+          process.exit(3)
+        }
+      })
+      .then(() => ticker.getRates(settings, fiatCode, cryptoCode))
+      .then(rates => {
+        const fiatAmount = rates.rates.ask.times(cryptoValue).toFixed(2)
+
+        const questions = [
+          {
+            type: 'confirm',
+            name: 'confirm',
+            message: `Are you sure you want to send ${cryptoValue} ${cryptoCode} (${fiatAmount} ${fiatCode}) to the address ${toAddress}?`,
+            default: false
+          }
+        ]
+
+        console.log('\nPlease look over this transaction carefully!')
+
+        return inquirer.prompt(questions)
+          .then(answers => {
+            if (!answers.confirm) {
+              console.log('Transaction cancelled.')
+              process.exit(0)
+            }
+
+            console.log('Sending...')
+            return wallet.sendCoins(settings, toAddress, cryptoAtoms, cryptoCode)
+              .then(() => {
+                console.log('Success.')
+                process.exit(0)
+              })
+              .catch(console.log)
+          })
+          .catch(console.log)
+      })
+      .catch(console.log)
+  })

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,

package.json

@@ -20,6 +20,7 @@
     "console-log-level": "^1.4.0",
     "cookie-parser": "^1.4.3",
     "ethereumjs-tx": "^1.3.3",
+    "ethereumjs-util": "^5.2.0",
     "ethereumjs-wallet": "^0.6.0",
     "express": "^4.15.4",
     "express-limiter": "^1.6.0",
@@ -27,7 +28,7 @@
     "express-ws": "^3.0.0",
     "got": "^7.1.0",
     "helmet": "^3.8.1",
-    "inquirer": "^3.2.1",
+    "inquirer": "^5.2.0",
     "kraken-api": "github:DeX3/npm-kraken-api",
     "lnd-async": "^1.0.1",
     "lodash": "^4.17.2",
@@ -76,7 +77,8 @@
     "lamassu-nuke-db": "./bin/lamassu-nuke-db",
     "lamassu-coins": "./bin/lamassu-coins",
     "lamassu-update": "./bin/lamassu-update",
-    "lamassu-ofac-update": "./bin/lamassu-ofac-update"
+    "lamassu-ofac-update": "./bin/lamassu-ofac-update",
+    "lamassu-send-coins": "./bin/lamassu-send-coins"
   },
   "scripts": {
     "start": "node bin/lamassu-server",