1 files changed, 11 insertions, 3 deletions
diff --git a/src/monitor.py b/src/monitor.py
index 3198b78..6f0704a 100644
--- a/src/monitor.py
+++ b/src/monitor.py
@@ -10,6 +10,8 @@ import struct
 import traceback
 import array
 import time
+import json
+from subprocess import Popen, PIPE
 
 # native library implements a few bits
 from . import _native
@@ -247,11 +249,17 @@ class Monitor:
 
     def has_network_accounting(self, iface):
         """Checks if network accounting was enabled on interface"""
-        try:
-            os.stat("/var/lib/vnstat/%s" % iface)
-            return True
+        try:         
+            pr = Popen(("vnstat --json -i %s" % (iface)).split(), stdout=PIPE)
+            data, _ = pr.communicate()
+            data = data.decode('utf-8')
+            if data[0] == "{":
+                data_tab = json.loads(data)
+                if data_tab['interfaces'][0]['name'] == iface:
+                    return True
         except:
             return False
+        return False
 
     def get_traffic(self, iface, net=None):
         """Get traffic information"""