Add route to get public IP

src/routes/cloudron.js

@@ -13,6 +13,7 @@ exports = module.exports = {
     setDashboardAndMailDomain: setDashboardAndMailDomain,
     prepareDashboardDomain: prepareDashboardDomain,
     renewCerts: renewCerts,
+    getServerIp: getServerIp,
     syncExternalLdap: syncExternalLdap
 };
 
@@ -26,6 +27,7 @@ let assert = require('assert'),
     externalLdap = require('../externalldap.js'),
     HttpError = require('connect-lastmile').HttpError,
     HttpSuccess = require('connect-lastmile').HttpSuccess,
+    sysinfo = require('../sysinfo.js'),
     updater = require('../updater.js'),
     updateChecker = require('../updatechecker.js');
 
@@ -190,3 +192,11 @@ function syncExternalLdap(req, res, next) {
         next(new HttpSuccess(202, { taskId: taskId }));
     });
 }
+
+function getServerIp(req, res, next) {
+    sysinfo.getServerIp(function (error, ip) {
+        if (error) return next(BoxError.toHttpError(error));
+
+        next(new HttpSuccess(200, { ip }));
+    });
+}