added aad encryption

server/portal_server.js

@@ -78,14 +78,17 @@ app.get('/assets/download/:id', (req, res) => {
     return;
   }
 
-  storage
-    .filename(id)
-    .then(reply => {
+  Promise.all([
+    storage.filename(id),
+    storage.aad(id)])
+    .then(([reply, aad]) => {
       storage.length(id).then(contentLength => {
+        
         res.writeHead(200, {
           'Content-Disposition': 'attachment; filename=' + reply,
           'Content-Type': 'application/octet-stream',
-          'Content-Length': contentLength
+          'Content-Length': contentLength,
+          'Additional-Data': aad
         });
         const file_stream = storage.get(id);
 
@@ -142,16 +145,22 @@ app.post('/upload/:id', (req, res, next) => {
   }
 
   req.pipe(req.busboy);
+  
+  req.busboy.on('field', (fieldname, value) => {
+    storage.setField(req.params.id, fieldname, value);
+  })
+
   req.busboy.on('file', (fieldname, file, filename) => {
     log.info('Uploading:', req.params.id);
 
     const protocol = conf.env === 'production' ? 'https' : req.protocol;
     const url = `${protocol}://${req.get('host')}/download/${req.params.id}/`;
-
     storage.set(req.params.id, file, filename, url).then(linkAndID => {
       res.json(linkAndID);
     });
   });
+
+
 });
 
 app.get('/__lbheartbeat__', (req, res) => {

server/storage.js

@@ -27,6 +27,8 @@ if (conf.s3_bucket) {
     length: awsLength,
     get: awsGet,
     set: awsSet,
+    aad: aad,
+    setField: setField,
     delete: awsDelete,
     forceDelete: awsForceDelete,
     ping: awsPing
@@ -38,6 +40,8 @@ if (conf.s3_bucket) {
     length: localLength,
     get: localGet,
     set: localSet,
+    aad: aad,
+    setField: setField,
     delete: localDelete,
     forceDelete: localForceDelete,
     ping: localPing
@@ -68,6 +72,22 @@ function exists(id) {
   });
 }
 
+function setField(id, key, value) {
+  redis_client.hset(id, key, value);
+}
+
+function aad(id) {
+  return new Promise((resolve, reject) => {
+    redis_client.hget(id, 'aad', (err, reply) => {
+      if (!err) {
+        resolve(reply);
+      } else {
+        reject();
+      }
+    })
+  })
+}
+
 function localLength(id) {
   return new Promise((resolve, reject) => {
     try {
@@ -86,7 +106,7 @@ function localSet(id, file, filename, url) {
   return new Promise((resolve, reject) => {
     const fstream = fs.createWriteStream(path.join(__dirname, '../static', id));
     file.pipe(fstream);
-    fstream.on('close', () => {
+    fstream.on('close', () => {      
       const uuid = crypto.randomBytes(10).toString('hex');
 
       redis_client.hmset([id, 'filename', filename, 'delete', uuid]);