provision: add route to detect ipv4 and ipv6

src/network.js

@@ -18,7 +18,8 @@ exports = module.exports = {
 
     getIPv4,
     hasIPv6,
-    getIPv6
+    getIPv6,
+    detectIP
 };
 
 const assert = require('assert'),
@@ -162,3 +163,15 @@ async function getIPv6() {
     if (!result) return null;
     return ipaddr.parse(result).toRFC5952String();
 }
+
+async function detectIP() {
+    const genericProvider = require('./network/generic.js');
+
+    const [error4, ipv4] = await safe(genericProvider.getIPv4({}));
+    const [error6, ipv6] = await safe(genericProvider.getIPv6({}));
+
+    return {
+        ipv4: error4 ? null : ipv4,
+        ipv6: error6 ? null : ipv6
+    };
+}

src/routes/provision.js

@@ -9,6 +9,7 @@ exports = module.exports = {
     getStatus,
     setupTokenAuth,
     getBlockDevices,
+    detectIP
 };
 
 const assert = require('assert'),
@@ -16,6 +17,7 @@ const assert = require('assert'),
     BoxError = require('../boxerror.js'),
     HttpError = require('connect-lastmile').HttpError,
     HttpSuccess = require('connect-lastmile').HttpSuccess,
+    network = require('../network.js'),
     paths = require('../paths.js'),
     provision = require('../provision.js'),
     safe = require('safetydance'),
@@ -149,3 +151,8 @@ async function getBlockDevices(req, res, next) {
 
     next(new HttpSuccess(200, { devices }));
 }
+
+async function detectIP(req, res, next) {
+    const result = await network.detectIP();
+    next(new HttpSuccess(200, { ipv4: result.ipv4, ipv6: result.ipv6 }));
+}

src/server.js

@@ -87,6 +87,7 @@ async function initializeExpressSync() {
     router.post('/api/v1/provision/restore',  json, verifyUnprovisioned, setupTokenAuth, routes.provision.restore);
     router.post('/api/v1/provision/activate', json, verifyUnprovisioned, setupTokenAuth, routes.provision.activate);
     router.get ('/api/v1/provision/block_devices',  verifyUnprovisioned, routes.provision.getBlockDevices);
+    router.post('/api/v1/provision/detect_ip',      verifyUnprovisioned, routes.provision.detectIP);
     router.get ('/api/v1/provision/status',         routes.provision.getStatus);
 
     // auth routes