move some pair stuff to lamassu-admin-server

lib/app.js

@@ -9,7 +9,7 @@ var plugins = require('./plugins')
 var logger = require('./logger')
 var configManager = require('./config-manager')
 
-const db = require('./db')
+const pair = require('./pair')
 
 module.exports = function (options) {
   var app = express()
@@ -64,11 +64,15 @@ module.exports = function (options) {
 
       authMiddleware = function (req, res, next) {
         const deviceId = req.connection.getPeerCertificate().fingerprint
-        const sql = 'select id from devices where device_id=$1 and authorized=$2'
-        db.one(sql, [deviceId, true])
-        .then(() => {
-          req.deviceId = deviceId
-          next()
+
+        return pair.isPaired(deviceId)
+        .then(r => {
+          if (r) {
+            req.deviceId = deviceId
+            return next()
+          }
+
+          throw new Error('Unauthorized')
         })
         .catch(e => res.status(403).end())
       }