fixed ATM authorizing

lib/app.js

@@ -28,7 +28,6 @@ var argv = require('optimist').argv;
 var LamassuConfig = require('lamassu-config');
 var atm = require('lamassu-atm-protocol');
 var format = require('util').format;
-var clientCertificateAuth = require('client-certificate-auth');
 
 var conString, dbConfig, config;
 
@@ -61,16 +60,17 @@ config.load(function(err, conf) {
     });
   }
   else {
-    authMiddleware = clientCertificateAuth({ rejectUnauthorized: false }, function(cert, done) {
-      config.isAuthorized(cert.fingerprint, function(err, authorized) {
-        if (err) {
-          console.error('Client certificate authorization failed', err.message);
-          return done(false);
-        }
+    authMiddleware = function(req, res, next) {
+      var fingerprint = req.connection.getPeerCertificate().fingerprint;
+      var e = new Error('Unauthorized');
+      e.status = 401;
 
-        done(authorized);
+      config.isAuthorized(fingerprint, function (err, authorized) {
+        if (err) { return next(e); }
+        if (!authorized) { return next(e); }
+        next();
       });
-    });
+    };
 
     var options = {
       key: fs.readFileSync(argv.key),