Add a generic method to destroy a realm

This commit adds a method to the driver class to destroy a created
realm, and transitions the main file over to use this instead of
console.realm.stop().

Author: DirectXMan12

gssapi-console.py

@@ -43,13 +43,12 @@
              'GSSAPI console' % PARSED_ARGS.mech)
 
 mech_cls = mech_cls_loader.load()
-console = GSSAPIConsole(mech_cls, realm_args=realm_args)
-
 SAVED_ENV = None
 
 try:
     # import the env
     SAVED_ENV = copy.deepcopy(os.environ)
+    console = GSSAPIConsole(mech_cls, realm_args=realm_args)
     for k, v in console.realm.env.items():
         os.environ[k] = v
 
@@ -76,4 +75,4 @@
             else:
                 del os.environ[k]
 
-    console.realm.stop()
+    console.stop()

gssapi_console/core.py

@@ -51,6 +51,9 @@ def __init__(self, driver_cls, use_readline=True, realm_args={}, *args, **kwargs
         if os.environ.get('LD_LIBRARY_PATH'):
             self.realm.env['LD_LIBRARY_PATH'] = os.environ['LD_LIBRARY_PATH']
 
+    def stop(self):
+        self._driver.destroy_realm(self.realm)
+
     def _add_readline(self):
         self.runsource(READLINE_SRC, '<readline setup>', 'exec')
 

gssapi_console/drivers.py

@@ -8,6 +8,9 @@ class GSSAPIConsoleDriver(object):
     def create_realm(self, realm_args):
         return None
 
+    def destroy_realm(self, realm):
+        return None
+
 
 class Krb5Console(GSSAPIConsoleDriver):
     MECH_NAME = 'krb5'
@@ -19,3 +22,6 @@ def __init__(self):
 
     def create_realm(self, realm_args):
         return self._k5test.K5Realm(**realm_args)
+
+    def destroy_realm(self, realm):
+        realm.stop()