fix: handle errors when wallet is unreachable

lib/plugins/common/json-rpc.js

@@ -48,18 +48,21 @@ function split (str) {
 }
 
 function parseConf (confPath) {
-  const conf = fs.readFileSync(confPath)
-  const lines = conf.toString().split('\n')
+  try {
+    const conf = fs.readFileSync(confPath)
+    const lines = conf.toString().split('\n')
 
-  const res = {}
-  for (let i = 0; i < lines.length; i++) {
-    const keyVal = split(lines[i])
+    const res = {}
+    for (let i = 0; i < lines.length; i++) {
+      const keyVal = split(lines[i])
 
-    // skip when value is empty
-    if (!keyVal[1]) continue
+      // skip when value is empty
+      if (!keyVal[1]) continue
 
-    res[keyVal[0]] = keyVal[1]
+      res[keyVal[0]] = keyVal[1]
+    }
+    return res
+  } catch (e) {
+    throw new Error('wallet is currently not installed')
   }
-
-  return res
 }

lib/plugins/wallet/zcashd/zcashd.js

@@ -9,16 +9,22 @@ const E = require('../../../error')
 const cryptoRec = coinUtils.getCryptoCurrency('ZEC')
 const configPath = coinUtils.configPath(cryptoRec)
 const unitScale = cryptoRec.unitScale
-const config = jsonRpc.parseConf(configPath)
 
-const rpcConfig = {
-  username: config.rpcuser,
-  password: config.rpcpassword,
-  port: config.rpcport || cryptoRec.defaultPort
+function rpcConfig () {
+  try {
+    const config = jsonRpc.parseConf(configPath)
+    return {
+      username: config.rpcuser,
+      password: config.rpcpassword,
+      port: config.rpcport || cryptoRec.defaultPort
+    }
+  } catch (err) {
+    throw err
+  }
 }
 
 function fetch (method, params) {
-  return jsonRpc.fetch(rpcConfig, method, params)
+  return jsonRpc.fetch(rpcConfig(), method, params)
 }
 
 function checkCryptoCode (cryptoCode) {