check for whitespace in gateways and phone numbers (#477)

lib/routes/api/sip-gateways.js

@@ -6,6 +6,7 @@ const decorate = require('./decorate');
 const sysError = require('../error');
 const net = require('net');
 
+const hasWhitespace = (str) => /\s/.test(str);
 const checkUserScope = async(req, voip_carrier_sid) => {
   const {lookupCarrierBySid} = req.app.locals;
   if (!voip_carrier_sid) {
@@ -60,6 +61,9 @@ const validate = async(req, sid) => {
     throw new DbErrorBadRequest(
       `netmask required to have value equal or greater than ${process.env.JAMBONZ_MIN_GATEWAY_NETMASK}`);
   }
+  if (hasWhitespace(ipv4)) {
+    throw new DbErrorBadRequest('Gateway must not contain whitespace');
+  }
   if (inbound && !net.isIPv4(ipv4)) {
     throw new DbErrorBadRequest('Inbound gateway must be IPv4 address');
   }