Upgrading STF for security reasons (#813)

* Upgrading STF for security reasons

Signed-off-by: Denis barbaron <denis.barbaron@orange.com>

* update semaphore files

Signed-off-by: Denis barbaron <denis.barbaron@orange.com>

* upgrading STF for security reasons v2

Signed-off-by: Denis barbaron <denis.barbaron@orange.com>

* update yarn.lock file

Signed-off-by: Denis barbaron <denis.barbaron@orange.com>

---------

Signed-off-by: Denis barbaron <denis.barbaron@orange.com>

lib/db/api.js

@@ -14,6 +14,7 @@ const uuid = require('uuid')
 const apiutil = require('../util/apiutil')
 const Promise = require('bluebird')
 const _ = require('lodash')
+const timeutil = require('../util/timeutil')
 
 dbapi.DuplicateSecondaryIndexError = function DuplicateSecondaryIndexError() {
   Error.call(this)
@@ -1174,6 +1175,7 @@ dbapi.saveDeviceInitialState = function(serial, device) {
   , owner: null
   , status: device.status
   , statusChangedAt: r.now()
+  , statusTimeStamp: timeutil.now('nano')
   , ready: false
   , reverseForwards: []
   , remoteConnect: false
@@ -1223,10 +1225,26 @@ dbapi.unsetDeviceConnectUrl = function(serial) {
   }))
 }
 
-dbapi.saveDeviceStatus = function(serial, status) {
+dbapi.saveDeviceStatus = function(serial, status, statusTimeStamp) {
   return db.run(r.table('devices').get(serial).update({
-    status: status
-  , statusChangedAt: r.now()
+    status:
+      r.branch(
+        r.expr(statusTimeStamp).gt(r.row('statusTimeStamp'))
+      , status
+      , r.row('status')
+      )
+  , statusChangedAt:
+      r.branch(
+        r.expr(statusTimeStamp).gt(r.row('statusTimeStamp'))
+      , r.now()
+      , r.row('statusChangedAt')
+      )
+  , statusTimeStamp:
+      r.branch(
+        r.expr(statusTimeStamp).gt(r.row('statusTimeStamp'))
+      , statusTimeStamp
+      , r.row('statusTimeStamp')
+      )
   }))
 }