Add cancel button for EIP connection.

Closes: #4035

This falls in the "quick" workaround category.

A proper state machine that extends the four basic connection states
is hence needed. We have to accomodate design to have a
connection-oriented state machine in the backend (I would favor a
twisted protocol for this), and a more lightweight one that conducts
the gui-level changes (ie, change the actions / buttons / labels
accordingly).

Since this "cancel" functionality has been long postponed, I chose
to do one more ugly hack here, that is, show and hide dance with a
button that just calls the bitmask-root to kill the vpn process. It
should work well enough until we get to the reorganization needed for a
clean process control for eip.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/leap/bitmask/backend/leapbackend.py b/src/leap/bitmask/backend/leapbackend.py
index 6b0328ca..3b023563 100644
--- a/src/leap/bitmask/backend/leapbackend.py
+++ b/src/leap/bitmask/backend/leapbackend.py
@@ -317,6 +317,12 @@ class LeapBackend(Backend):
         """
         self._eip.tear_fw_down()
 
+    def bitmask_root_vpn_down(self):
+        """
+        Signal the need to bring vpn down.
+        """
+        self._eip.bitmask_root_vpn_down()
+
     def user_login(self, provider, username, password):
         """
         Execute the whole authentication process for a user