initial dynamic config support

added configwatcher.py

core/configwatcher.py

@@ -0,0 +1,49 @@
+#! /usr/bin/env python2.7
+
+import logging
+
+logging.getLogger("watchdog").setLevel(logging.ERROR) #Disables watchdog's debug messages
+from watchdog.observers import Observer
+from watchdog.events import FileSystemEventHandler
+
+from configobj import ConfigObj
+
+mitmf_logger = logging.getLogger('mitmf')
+
+class ConfigWatcher(FileSystemEventHandler):
+
+    _instance = None
+
+    def __init__(self):
+
+        self.config = ConfigObj("./config/mitmf.conf")
+
+    @staticmethod
+    def getInstance():
+        if ConfigWatcher._instance is None:
+            ConfigWatcher._instance = ConfigWatcher()
+
+        return ConfigWatcher._instance
+
+    def startConfigWatch(self):
+        observer = Observer()
+        observer.schedule(self, path='./config', recursive=False)
+        observer.start()
+
+    def getConfig(self):
+        return self.config
+
+    def on_modified(self, event):
+        mitmf_logger.debug("[{}] Detected configuration changes, reloading!".format(self.__class__.__name__))
+        self.reloadConfig()
+        self.onConfigChange()
+
+    def onConfigChange(self):
+        """ We can subclass this function to do stuff after the config file has been modified"""
+        pass
+
+    def reloadConfig(self):
+        try:
+            self.config = ConfigObj("./config/mitmf.conf")
+        except Exception, e:
+            mitmf_logger.warning("Error reloading config file: {}".format(e))