Merge remote-tracking branch 'refs/remotes/ivan/feature/new-frontend-backend' into develop

8 files changed, 152 insertions, 146 deletions

diff --git a/src/leap/bitmask/gui/__init__.py b/src/leap/bitmask/gui/__init__.py
index 94bf1fd5..bba02061 100644
--- a/src/leap/bitmask/gui/__init__.py
+++ b/src/leap/bitmask/gui/__init__.py
@@ -19,5 +19,6 @@ init file for leap.gui
 """
 # This was added for coverage and testing, but when doing the osx
 # bundle with py2app it fails because of this, so commenting for now
+# Also creates conflicts with the new frontend/backend separation.
 # app = __import__("app", globals(), locals(), [], 2)
 # __all__ = [app]
diff --git a/src/leap/bitmask/gui/eip_preferenceswindow.py b/src/leap/bitmask/gui/eip_preferenceswindow.py
index 530cd38d..0f63972f 100644
--- a/src/leap/bitmask/gui/eip_preferenceswindow.py
+++ b/src/leap/bitmask/gui/eip_preferenceswindow.py
@@ -33,7 +33,7 @@ class EIPPreferencesWindow(QtGui.QDialog):
     """
     Window that displays the EIP preferences.
     """
-    def __init__(self, parent, domain, backend):
+    def __init__(self, parent, domain, backend, leap_signaler):
         """
         :param parent: parent object of the EIPPreferencesWindow.
         :type parent: QWidget
@@ -46,6 +46,7 @@ class EIPPreferencesWindow(QtGui.QDialog):
         self.AUTOMATIC_GATEWAY_LABEL = self.tr("Automatic")
 
         self._settings = LeapSettings()
+        self._leap_signaler = leap_signaler
         self._backend = backend
 
         # Load UI
@@ -96,7 +97,7 @@ class EIPPreferencesWindow(QtGui.QDialog):
         if not providers:
             return
 
-        self._backend.eip_get_initialized_providers(providers)
+        self._backend.eip_get_initialized_providers(domains=providers)
 
     @QtCore.Slot(list)
     def _load_providers_in_combo(self, providers):
@@ -148,6 +149,8 @@ class EIPPreferencesWindow(QtGui.QDialog):
             gateway = self.ui.cbGateways.itemData(idx)
 
         self._settings.set_selected_gateway(provider, gateway)
+        self._backend.settings_set_selected_gateway(provider=provider,
+                                                    gateway=gateway)
 
         msg = self.tr(
             "Gateway settings for provider '{0}' saved.").format(provider)
@@ -174,7 +177,7 @@ class EIPPreferencesWindow(QtGui.QDialog):
         domain = self.ui.cbProvidersGateway.itemData(domain_idx)
         self._selected_domain = domain
 
-        self._backend.eip_get_gateways_list(domain)
+        self._backend.eip_get_gateways_list(domain=domain)
 
     @QtCore.Slot(list)
     def _update_gateways_list(self, gateways):
@@ -248,7 +251,7 @@ class EIPPreferencesWindow(QtGui.QDialog):
         self.ui.cbGateways.setEnabled(False)
 
     def _backend_connect(self):
-        sig = self._backend.signaler
+        sig = self._leap_signaler
         sig.eip_get_gateways_list.connect(self._update_gateways_list)
         sig.eip_get_gateways_list_error.connect(self._gateways_list_error)
         sig.eip_uninitialized_provider.connect(
diff --git a/src/leap/bitmask/gui/eip_status.py b/src/leap/bitmask/gui/eip_status.py
index bd569343..a707050a 100644
--- a/src/leap/bitmask/gui/eip_status.py
+++ b/src/leap/bitmask/gui/eip_status.py
@@ -24,7 +24,6 @@ from functools import partial
 
 from PySide import QtCore, QtGui
 
-from leap.bitmask.config import flags
 from leap.bitmask.services import get_service_display_name, EIP_SERVICE
 from leap.bitmask.platform_init import IS_LINUX
 from leap.bitmask.util.averages import RateMovingAverage
@@ -44,7 +43,7 @@ class EIPStatusWidget(QtGui.QWidget):
     RATE_STR = "%1.2f KB/s"
     TOTAL_STR = "%1.2f Kb"
 
-    def __init__(self, parent=None, eip_conductor=None):
+    def __init__(self, parent, eip_conductor, leap_signaler):
         """
         :param parent: the parent of the widget.
         :type parent: QObject
@@ -60,6 +59,8 @@ class EIPStatusWidget(QtGui.QWidget):
         self.ui = Ui_EIPStatus()
         self.ui.setupUi(self)
 
+        self._leap_signaler = leap_signaler
+
         self.eip_conductor = eip_conductor
         self.eipconnection = eip_conductor.eip_connection
 
@@ -98,7 +99,7 @@ class EIPStatusWidget(QtGui.QWidget):
         """
         Connect backend signals.
         """
-        signaler = self.eip_conductor._backend.signaler
+        signaler = self._leap_signaler
 
         signaler.eip_openvpn_already_running.connect(
             self._on_eip_openvpn_already_running)
@@ -121,8 +122,8 @@ class EIPStatusWidget(QtGui.QWidget):
         # XXX we cannot connect this signal now because
         # it interferes with the proper notifications during restarts
         # without available network.
-        #signaler.eip_network_unreachable.connect(
-            #self._on_eip_network_unreachable)
+        # signaler.eip_network_unreachable.connect(
+        #     self._on_eip_network_unreachable)
 
     def _make_status_clickable(self):
         """
@@ -324,7 +325,7 @@ class EIPStatusWidget(QtGui.QWidget):
         Triggered after a successful login.
         Enables the start button.
         """
-        #logger.debug('Showing EIP start button')
+        # logger.debug('Showing EIP start button')
         self.eip_button.show()
 
         # Restore the eip action menu
@@ -543,7 +544,7 @@ class EIPStatusWidget(QtGui.QWidget):
         elif vpn_state == "ALREADYRUNNING":
             # Put the following calls in Qt's event queue, otherwise
             # the UI won't update properly
-            #self.send_disconnect_signal()
+            # self.send_disconnect_signal()
             QtDelayedCall(
                 0, self.eipconnection.qtsigns.do_disconnect_signal.emit)
             msg = self.tr("Unable to start VPN, it's already running.")
@@ -587,16 +588,23 @@ class EIPStatusWidget(QtGui.QWidget):
         self._systray.setIcon(QtGui.QIcon(selected_pixmap_tray))
         self._eip_status_menu.setTitle(tray_message)
 
-    def set_provider(self, provider):
+    def set_provider(self, provider, country_code):
+        """
+        Set the provider used right now, name and flag (if available).
+
+        :param provider: the provider in use.
+        :type provider: str
+        :param country_code: the country code of the gateway in use.
+        :type country_code: str
+        """
         self._provider = provider
 
         self.ui.lblEIPMessage.setText(
             self.tr("Routing traffic through: <b>{0}</b>").format(
                 provider))
 
-        ccode = flags.CURRENT_VPN_COUNTRY
-        if ccode is not None:
-            self.set_country_code(ccode)
+        if country_code is not None:
+            self.set_country_code(country_code)
 
     def set_country_code(self, code):
         """
@@ -729,7 +737,7 @@ class EIPStatusWidget(QtGui.QWidget):
         self.set_eip_status_icon("error")
 
     def set_eipstatus_off(self, error=True):
-    # XXX this should be handled by the state machine.
+        # XXX this should be handled by the state machine.
         """
         Sets eip status to off
         """
diff --git a/src/leap/bitmask/gui/mainwindow.py b/src/leap/bitmask/gui/mainwindow.py
index e53ab7f3..6959650b 100644
--- a/src/leap/bitmask/gui/mainwindow.py
+++ b/src/leap/bitmask/gui/mainwindow.py
@@ -18,6 +18,7 @@
 Main window for Bitmask.
 """
 import logging
+import time
 
 from datetime import datetime
 
@@ -25,6 +26,11 @@ from PySide import QtCore, QtGui
 
 from leap.bitmask import __version__ as VERSION
 from leap.bitmask import __version_hash__ as VERSION_HASH
+
+# TODO: we should use a more granular signaling instead of passing error/ok as
+# a result.
+from leap.bitmask.backend.leapbackend import ERROR_KEY, PASSED_KEY
+
 from leap.bitmask.config import flags
 from leap.bitmask.config.leapsettings import LeapSettings
 
@@ -37,13 +43,13 @@ from leap.bitmask.gui.mail_status import MailStatusWidget
 from leap.bitmask.gui.preferenceswindow import PreferencesWindow
 from leap.bitmask.gui.systray import SysTray
 from leap.bitmask.gui.wizard import Wizard
-from leap.bitmask.gui import twisted_main
 
 from leap.bitmask.platform_init import IS_WIN, IS_MAC, IS_LINUX
 from leap.bitmask.platform_init.initializers import init_platform
 from leap.bitmask.platform_init.initializers import init_signals
 
-from leap.bitmask.backend import leapbackend
+from leap.bitmask.backend.backend_proxy import BackendProxy
+from leap.bitmask.backend.leapsignaler import LeapSignaler
 
 from leap.bitmask.services.eip import conductor as eip_conductor
 from leap.bitmask.services.mail import conductor as mail_conductor
@@ -91,13 +97,10 @@ class MainWindow(QtGui.QMainWindow):
     # We give the services some time to a halt before forcing quit.
     SERVICES_STOP_TIMEOUT = 20000  # in milliseconds
 
-    def __init__(self, bypass_checks=False, start_hidden=False):
+    def __init__(self, start_hidden=False):
         """
         Constructor for the client main window
 
-        :param bypass_checks: Set to true if the app should bypass first round
-                              of checks for CA certificates at bootstrap
-        :type bypass_checks: bool
         :param start_hidden: Set to true if the app should not show the window
                              but just the tray.
         :type start_hidden: bool
@@ -119,15 +122,18 @@ class MainWindow(QtGui.QMainWindow):
         self.ui = Ui_MainWindow()
         self.ui.setupUi(self)
         self.menuBar().setNativeMenuBar(not IS_LINUX)
-        self._backend = leapbackend.Backend(bypass_checks)
-        self._backend.start()
+
+        self._backend = BackendProxy()
+
+        self._leap_signaler = LeapSignaler()
+        self._leap_signaler.start()
 
         self._settings = LeapSettings()
+        # gateway = self._settings.get_selected_gateway(provider)
+        # self._backend.settings_set_selected_gateway(provider, gateway)
 
         # Login Widget
-        self._login_widget = LoginWidget(
-            self._settings,
-            self)
+        self._login_widget = LoginWidget(self._settings, self)
         self.ui.loginLayout.addWidget(self._login_widget)
 
         # Mail Widget
@@ -144,8 +150,9 @@ class MainWindow(QtGui.QMainWindow):
 
         # EIP Control redux #########################################
         self._eip_conductor = eip_conductor.EIPConductor(
-            self._settings, self._backend)
-        self._eip_status = EIPStatusWidget(self, self._eip_conductor)
+            self._settings, self._backend, self._leap_signaler)
+        self._eip_status = EIPStatusWidget(self, self._eip_conductor,
+                                           self._leap_signaler)
 
         init_signals.eip_missing_helpers.connect(
             self._disable_eip_missing_helpers)
@@ -180,6 +187,7 @@ class MainWindow(QtGui.QMainWindow):
         self._services_being_stopped = {}
 
         # used to know if we are in the final steps of quitting
+        self._quitting = False
         self._finally_quitting = False
 
         self._backend_connected_signals = []
@@ -249,7 +257,7 @@ class MainWindow(QtGui.QMainWindow):
         # XXX should connect to mail_conductor.start_mail_service instead
         self.soledad_ready.connect(self._start_smtp_bootstrapping)
         self.soledad_ready.connect(self._start_imap_service)
-        ################################# end Qt Signals connection ########
+        # ################################ end Qt Signals connection ########
 
         init_platform()
 
@@ -258,7 +266,6 @@ class MainWindow(QtGui.QMainWindow):
 
         self._logger_window = None
 
-        self._bypass_checks = bypass_checks
         self._start_hidden = start_hidden
 
         self._mail_conductor = mail_conductor.MailConductor(self._backend)
@@ -283,7 +290,7 @@ class MainWindow(QtGui.QMainWindow):
             self._wizard_firstrun = True
             self._disconnect_and_untrack()
             self._wizard = Wizard(backend=self._backend,
-                                  bypass_checks=bypass_checks)
+                                  leap_signaler=self._leap_signaler)
             # Give this window time to finish init and then show the wizard
             QtDelayedCall(1, self._launch_wizard)
             self._wizard.accepted.connect(self._finish_init)
@@ -342,7 +349,7 @@ class MainWindow(QtGui.QMainWindow):
                              that we are tracking to disconnect later.
         :type only_tracked: bool
         """
-        sig = self._backend.signaler
+        sig = self._leap_signaler
         conntrack = self._connect_and_track
         auth_err = self._authentication_error
 
@@ -407,6 +414,9 @@ class MainWindow(QtGui.QMainWindow):
 
         sig.eip_dns_error.connect(self._eip_dns_error)
 
+        sig.eip_get_gateway_country_code.connect(self._set_eip_provider)
+        sig.eip_no_gateway.connect(self._set_eip_provider)
+
         # ==================================================================
 
         # Soledad signals
@@ -480,7 +490,7 @@ class MainWindow(QtGui.QMainWindow):
         if self._wizard is None:
             self._disconnect_and_untrack()
             self._wizard = Wizard(backend=self._backend,
-                                  bypass_checks=self._bypass_checks)
+                                  leap_signaler=self._leap_signaler)
             self._wizard.accepted.connect(self._finish_init)
             self._wizard.rejected.connect(self._rejected_wizard)
 
@@ -575,7 +585,8 @@ class MainWindow(QtGui.QMainWindow):
         if self._provider_details is not None:
             mx_provided = MX_SERVICE in self._provider_details['services']
         preferences = PreferencesWindow(self, user, domain, self._backend,
-                                        self._soledad_started, mx_provided)
+                                        self._soledad_started, mx_provided,
+                                        self._leap_signaler)
 
         self.soledad_ready.connect(preferences.set_soledad_ready)
         preferences.show()
@@ -604,12 +615,13 @@ class MainWindow(QtGui.QMainWindow):
             return
 
         self._trying_to_start_eip = settings.get_autostart_eip()
-        self._backend.eip_can_start(default_provider)
+        self._backend.eip_can_start(domain=default_provider)
 
         # If we don't want to start eip, we leave everything
         # initialized to quickly start it
         if not self._trying_to_start_eip:
-            self._backend.eip_setup(default_provider, skip_network=True)
+            self._backend.eip_setup(provider=default_provider,
+                                    skip_network=True)
 
     def _backend_can_start_eip(self):
         """
@@ -686,7 +698,9 @@ class MainWindow(QtGui.QMainWindow):
         Displays the EIP preferences window.
         """
         domain = self._login_widget.get_selected_provider()
-        EIPPreferencesWindow(self, domain, self._backend).show()
+        pref = EIPPreferencesWindow(self, domain,
+                                    self._backend, self._leap_signaler)
+        pref.show()
 
     #
     # updates
@@ -821,7 +835,7 @@ class MainWindow(QtGui.QMainWindow):
         """
         providers = self._settings.get_configured_providers()
 
-        self._backend.provider_get_all_services(providers)
+        self._backend.provider_get_all_services(providers=providers)
 
     def _provider_get_all_services(self, services):
         self._set_eip_visible(EIP_SERVICE in services)
@@ -1121,7 +1135,7 @@ class MainWindow(QtGui.QMainWindow):
         emit the corresponding signals inmediately
         """
         domain = self._login_widget.get_selected_provider()
-        self._backend.provider_setup(domain)
+        self._backend.provider_setup(provider=domain)
 
     @QtCore.Slot(dict)
     def _load_provider_config(self, data):
@@ -1136,11 +1150,11 @@ class MainWindow(QtGui.QMainWindow):
                      backend.provider_setup()
         :type data: dict
         """
-        if data[self._backend.PASSED_KEY]:
+        if data[PASSED_KEY]:
             selected_provider = self._login_widget.get_selected_provider()
-            self._backend.provider_bootstrap(selected_provider)
+            self._backend.provider_bootstrap(provider=selected_provider)
         else:
-            logger.error(data[self._backend.ERROR_KEY])
+            logger.error(data[ERROR_KEY])
             self._login_problem_provider()
 
     @QtCore.Slot()
@@ -1242,16 +1256,17 @@ class MainWindow(QtGui.QMainWindow):
         Once the provider configuration is loaded, this starts the SRP
         authentication
         """
-        if data[self._backend.PASSED_KEY]:
+        if data[PASSED_KEY]:
             username = self._login_widget.get_user()
             password = self._login_widget.get_password()
 
             self._show_hide_unsupported_services()
 
             domain = self._login_widget.get_selected_provider()
-            self._backend.user_login(domain, username, password)
+            self._backend.user_login(provider=domain,
+                                     username=username, password=password)
         else:
-            logger.error(data[self._backend.ERROR_KEY])
+            logger.error(data[ERROR_KEY])
             self._login_problem_provider()
 
     @QtCore.Slot()
@@ -1277,11 +1292,11 @@ class MainWindow(QtGui.QMainWindow):
         if MX_SERVICE in self._enabled_services:
             btn_enabled = self._login_widget.set_logout_btn_enabled
             btn_enabled(False)
-            sig = self._backend.signaler
+            sig = self._leap_signaler
             sig.soledad_bootstrap_failed.connect(lambda: btn_enabled(True))
             sig.soledad_bootstrap_finished.connect(lambda: btn_enabled(True))
 
-        if not MX_SERVICE in self._provider_details['services']:
+        if MX_SERVICE not in self._provider_details['services']:
             self._set_mx_visible(False)
 
     def _start_eip_bootstrap(self):
@@ -1316,7 +1331,7 @@ class MainWindow(QtGui.QMainWindow):
         """
         domain = self._login_widget.get_selected_provider()
         lang = QtCore.QLocale.system().name()
-        self._backend.provider_get_details(domain, lang)
+        self._backend.provider_get_details(domain=domain, lang=lang)
 
     @QtCore.Slot()
     def _provider_get_details(self, details):
@@ -1385,11 +1400,14 @@ class MainWindow(QtGui.QMainWindow):
                 # this is mostly for internal use/debug for now.
                 logger.warning("Sorry! Log-in at least one time.")
                 return
-            self._backend.soledad_load_offline(full_user_id, password, uuid)
+            self._backend.soledad_load_offline(username=full_user_id,
+                                               password=password, uuid=uuid)
         else:
             if self._logged_user is not None:
                 domain = self._login_widget.get_selected_provider()
-                self._backend.soledad_bootstrap(username, domain, password)
+                self._backend.soledad_bootstrap(username=username,
+                                                domain=domain,
+                                                password=password)
 
     ###################################################################
     # Service control methods: soledad
@@ -1468,14 +1486,27 @@ class MainWindow(QtGui.QMainWindow):
         signal that currently is beeing processed under status_panel.
         After the refactor to EIPConductor this should not be necessary.
         """
-        domain = self._login_widget.get_selected_provider()
+        self._already_started_eip = True
 
-        self._eip_status.set_provider(domain)
+        domain = self._login_widget.get_selected_provider()
         self._settings.set_defaultprovider(domain)
-        self._already_started_eip = True
+
+        self._backend.eip_get_gateway_country_code(domain=domain)
 
         # check for connectivity
-        self._backend.eip_check_dns(domain)
+        self._backend.eip_check_dns(domain=domain)
+
+    @QtCore.Slot()
+    def _set_eip_provider(self, country_code=None):
+        """
+        TRIGGERS:
+            Signaler.eip_get_gateway_country_code
+            Signaler.eip_no_gateway
+
+        Set the current provider and country code in the eip status widget.
+        """
+        domain = self._login_widget.get_selected_provider()
+        self._eip_status.set_provider(domain, country_code)
 
     @QtCore.Slot()
     def _eip_dns_error(self):
@@ -1539,7 +1570,7 @@ class MainWindow(QtGui.QMainWindow):
             self._eip_status.eip_button.setEnabled(False)
 
             domain = self._login_widget.get_selected_provider()
-            self._backend.eip_setup(domain)
+            self._backend.eip_setup(provider=domain)
 
             self._already_started_eip = True
             # we want to start soledad anyway after a certain timeout if eip
@@ -1571,12 +1602,12 @@ class MainWindow(QtGui.QMainWindow):
         Start the VPN thread if the eip configuration is properly
         loaded.
         """
-        passed = data[self._backend.PASSED_KEY]
+        passed = data[PASSED_KEY]
 
         if not passed:
             error_msg = self.tr("There was a problem with the provider")
             self._eip_status.set_eip_status(error_msg, error=True)
-            logger.error(data[self._backend.ERROR_KEY])
+            logger.error(data[ERROR_KEY])
             self._already_started_eip = False
             return
 
@@ -1594,11 +1625,11 @@ class MainWindow(QtGui.QMainWindow):
         This is used for intermediate bootstrapping stages, in case
         they fail.
         """
-        passed = data[self._backend.PASSED_KEY]
+        passed = data[PASSED_KEY]
         if not passed:
             self._login_widget.set_status(
                 self.tr("Unable to connect: Problem with provider"))
-            logger.error(data[self._backend.ERROR_KEY])
+            logger.error(data[ERROR_KEY])
             self._already_started_eip = False
             self._eip_status.aborted()
 
@@ -1663,9 +1694,9 @@ class MainWindow(QtGui.QMainWindow):
         This is used for intermediate bootstrapping stages, in case
         they fail.
         """
-        passed = data[self._backend.PASSED_KEY]
+        passed = data[PASSED_KEY]
         if not passed:
-            logger.error(data[self._backend.ERROR_KEY])
+            logger.error(data[ERROR_KEY])
             self._login_problem_provider()
 
     #
@@ -1711,10 +1742,10 @@ class MainWindow(QtGui.QMainWindow):
         self._services_being_stopped = set(('imap', 'eip'))
 
         imap_stopped = lambda: self._remove_service('imap')
-        self._backend.signaler.imap_stopped.connect(imap_stopped)
+        self._leap_signaler.imap_stopped.connect(imap_stopped)
 
         eip_stopped = lambda: self._remove_service('eip')
-        self._backend.signaler.eip_stopped.connect(eip_stopped)
+        self._leap_signaler.eip_stopped.connect(eip_stopped)
 
         logger.debug('Stopping mail services')
         self._backend.imap_stop_service()
@@ -1732,8 +1763,10 @@ class MainWindow(QtGui.QMainWindow):
         Start the quit sequence and wait for services to finish.
         Cleanup and close the main window before quitting.
         """
-        # TODO separate the shutting down of services from the
-        # UI stuff.
+        if self._quitting:
+            return
+
+        self._quitting = True
 
         # first thing to do quitting, hide the mainwindow and show tooltip.
         self.hide()
@@ -1786,7 +1819,6 @@ class MainWindow(QtGui.QMainWindow):
         Final steps to quit the app, starting from here we don't care about
         running services or user interaction, just quitting.
         """
-
         # We can reach here because all the services are stopped or because a
         # timeout was triggered. Since we want to run this only once, we exit
         # if this is called twice.
@@ -1799,12 +1831,13 @@ class MainWindow(QtGui.QMainWindow):
         self._backend.soledad_close()
         logger.debug('Final quit...')
 
+        self._leap_signaler.stop()
+        self._backend.stop()
+        time.sleep(0.05)  # give the thread a little time to finish.
+
         # Remove lockfiles on a clean shutdown.
         logger.debug('Cleaning pidfiles')
         if IS_WIN:
             WindowsLock.release_all_locks()
 
-        self._backend.stop()
         self.close()
-
-        QtDelayedCall(100, twisted_main.quit)
diff --git a/src/leap/bitmask/gui/preferenceswindow.py b/src/leap/bitmask/gui/preferenceswindow.py
index a3b81d38..3c9cd5d0 100644
--- a/src/leap/bitmask/gui/preferenceswindow.py
+++ b/src/leap/bitmask/gui/preferenceswindow.py
@@ -38,7 +38,8 @@ class PreferencesWindow(QtGui.QDialog):
     """
     preferences_saved = QtCore.Signal()
 
-    def __init__(self, parent, username, domain, backend, soledad_started, mx):
+    def __init__(self, parent, username, domain, backend, soledad_started, mx,
+                 leap_signaler):
         """
         :param parent: parent object of the PreferencesWindow.
         :parent type: QWidget
@@ -58,6 +59,7 @@ class PreferencesWindow(QtGui.QDialog):
 
         self._username = username
         self._domain = domain
+        self._leap_signaler = leap_signaler
         self._backend = backend
         self._soledad_started = soledad_started
         self._mx_provided = mx
@@ -194,7 +196,8 @@ class PreferencesWindow(QtGui.QDialog):
             return
 
         self._set_changing_password(True)
-        self._backend.user_change_password(current_password, new_password)
+        self._backend.user_change_password(current_password=current_password,
+                                           new_password=new_password)
 
     @QtCore.Slot()
     def _srp_change_password_ok(self):
@@ -208,7 +211,7 @@ class PreferencesWindow(QtGui.QDialog):
         logger.debug("SRP password changed successfully.")
 
         if self._mx_provided:
-            self._backend.soledad_change_password(new_password)
+            self._backend.soledad_change_password(new_password=new_password)
         else:
             self._change_password_success()
 
@@ -357,7 +360,7 @@ class PreferencesWindow(QtGui.QDialog):
         save_services = partial(self._save_enabled_services, domain)
         self.ui.pbSaveServices.clicked.connect(save_services)
 
-        self._backend.provider_get_supported_services(domain)
+        self._backend.provider_get_supported_services(domain=domain)
 
     @QtCore.Slot(str)
     def _load_services(self, services):
@@ -423,7 +426,7 @@ class PreferencesWindow(QtGui.QDialog):
         """
         Helper to connect to backend signals
         """
-        sig = self._backend.signaler
+        sig = self._leap_signaler
 
         sig.prov_get_supported_services.connect(self._load_services)
 
diff --git a/src/leap/bitmask/gui/statemachines.py b/src/leap/bitmask/gui/statemachines.py
index 00a1387e..91f1f605 100644
--- a/src/leap/bitmask/gui/statemachines.py
+++ b/src/leap/bitmask/gui/statemachines.py
@@ -240,9 +240,9 @@ class CompositeMachine(QStateMachine):
         c2.qtsigs.disconnected_signal.connect(self.off_ev2_slot)
 
     # XXX why is this getting deletec in c++?
-    #Traceback (most recent call last):
-    #self.postEvent(self.events.on_ev2)
-    #RuntimeError: Internal C++ object (ConnectedEvent2) already deleted.
+    # Traceback (most recent call last):
+    # self.postEvent(self.events.on_ev2)
+    # RuntimeError: Internal C++ object (ConnectedEvent2) already deleted.
     # XXX trying the following workaround, since
     # I cannot find why in the world this is getting deleted :(
     # XXX refactor!
@@ -318,9 +318,8 @@ class ConnectionMachineBuilder(object):
         components = self._conn.components
 
         if components is None:
-        # simple case: connection definition inherits directly from
-        # the abstract connection.
-
+            # simple case: connection definition inherits directly from
+            # the abstract connection.
             leap_assert_type(self._conn, connections.AbstractLEAPConnection)
             return self._make_simple_machine(self._conn, **kwargs)
 
diff --git a/src/leap/bitmask/gui/twisted_main.py b/src/leap/bitmask/gui/twisted_main.py
deleted file mode 100644
index b1ce0ead..00000000
--- a/src/leap/bitmask/gui/twisted_main.py
+++ /dev/null
@@ -1,43 +0,0 @@
-# -*- coding: utf-8 -*-
-# twisted_main.py
-# Copyright (C) 2013 LEAP
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-"""
-Main functions for integration of twisted reactor
-"""
-import logging
-
-from twisted.internet import error, reactor
-from PySide import QtCore
-
-logger = logging.getLogger(__name__)
-
-
-def stop():
-    QtCore.QCoreApplication.sendPostedEvents()
-    QtCore.QCoreApplication.flush()
-    try:
-        reactor.stop()
-        logger.debug('Twisted reactor stopped')
-    except error.ReactorNotRunning:
-        logger.debug('Twisted reactor not running')
-    logger.debug("Done stopping all the things.")
-
-
-def quit():
-    """
-    Stop the mainloop.
-    """
-    reactor.callLater(0, stop)
diff --git a/src/leap/bitmask/gui/wizard.py b/src/leap/bitmask/gui/wizard.py
index 4f67958f..be5bde52 100644
--- a/src/leap/bitmask/gui/wizard.py
+++ b/src/leap/bitmask/gui/wizard.py
@@ -24,6 +24,10 @@ from functools import partial
 
 from PySide import QtCore, QtGui
 
+# TODO: we should use a more granular signaling instead of passing error/ok as
+# a result.
+from leap.bitmask.backend.leapbackend import ERROR_KEY, PASSED_KEY
+
 from leap.bitmask.config import flags
 from leap.bitmask.config.leapsettings import LeapSettings
 from leap.bitmask.services import get_service_display_name, get_supported
@@ -49,16 +53,12 @@ class Wizard(QtGui.QWizard):
     REGISTER_USER_PAGE = 4
     SERVICES_PAGE = 5
 
-    def __init__(self, backend, bypass_checks=False):
+    def __init__(self, backend, leap_signaler):
         """
         Constructor for the main Wizard.
 
         :param backend: Backend being used
         :type backend: Backend
-        :param bypass_checks: Set to true if the app should bypass
-                              first round of checks for CA
-                              certificates at bootstrap
-        :type bypass_checks: bool
         """
         QtGui.QWizard.__init__(self)
 
@@ -86,6 +86,8 @@ class Wizard(QtGui.QWizard):
         self._connect_and_track(self.ui.lnProvider.returnPressed,
                                 self._check_provider)
 
+        self._leap_signaler = leap_signaler
+
         self._backend = backend
         self._backend_connect()
 
@@ -325,7 +327,8 @@ class Wizard(QtGui.QWizard):
         if user_ok and pass_ok:
             self._set_register_status(self.tr("Starting registration..."))
 
-            self._backend.user_register(self._domain, username, password)
+            self._backend.user_register(provider=self._domain,
+                                        username=username, password=password)
             self._username = username
             self._password = password
         else:
@@ -477,7 +480,7 @@ class Wizard(QtGui.QWizard):
 
         self.ui.lblNameResolution.setPixmap(self.QUESTION_ICON)
         self._provider_select_defer = self._backend.\
-            provider_setup(self._domain)
+            provider_setup(provider=self._domain)
 
     @QtCore.Slot(bool)
     def _skip_provider_checks(self, skip):
@@ -512,8 +515,8 @@ class Wizard(QtGui.QWizard):
         :param complete_page: page id to complete
         :type complete_page: int
         """
-        passed = data[self._backend.PASSED_KEY]
-        error = data[self._backend.ERROR_KEY]
+        passed = data[PASSED_KEY]
+        error = data[ERROR_KEY]
         if passed:
             label.setPixmap(self.OK_ICON)
             if complete:
@@ -533,7 +536,7 @@ class Wizard(QtGui.QWizard):
         """
         self._complete_task(data, self.ui.lblNameResolution)
         status = ""
-        passed = data[self._backend.PASSED_KEY]
+        passed = data[PASSED_KEY]
         if not passed:
             status = self.tr("<font color='red'><b>Non-existent "
                              "provider</b></font>")
@@ -553,10 +556,10 @@ class Wizard(QtGui.QWizard):
         """
         self._complete_task(data, self.ui.lblHTTPS)
         status = ""
-        passed = data[self._backend.PASSED_KEY]
+        passed = data[PASSED_KEY]
         if not passed:
             status = self.tr("<font color='red'><b>%s</b></font>") \
-                % (data[self._backend.ERROR_KEY])
+                % (data[ERROR_KEY])
             self.ui.lblProviderSelectStatus.setText(status)
         else:
             self.ui.lblProviderInfo.setPixmap(self.QUESTION_ICON)
@@ -573,22 +576,21 @@ class Wizard(QtGui.QWizard):
         check. Since this check is the last of this set, it also
         completes the page if passed
         """
-        if data[self._backend.PASSED_KEY]:
+        if data[PASSED_KEY]:
             self._complete_task(data, self.ui.lblProviderInfo,
                                 True, self.SELECT_PROVIDER_PAGE)
             self._provider_checks_ok = True
             lang = QtCore.QLocale.system().name()
-            self._backend.provider_get_details(self._domain, lang)
+            self._backend.provider_get_details(domain=self._domain, lang=lang)
         else:
             new_data = {
-                self._backend.PASSED_KEY: False,
-                self._backend.ERROR_KEY:
-                self.tr("Unable to load provider configuration")
+                PASSED_KEY: False,
+                ERROR_KEY: self.tr("Unable to load provider configuration")
             }
             self._complete_task(new_data, self.ui.lblProviderInfo)
 
         status = ""
-        if not data[self._backend.PASSED_KEY]:
+        if not data[PASSED_KEY]:
             status = self.tr("<font color='red'><b>Not a valid provider"
                              "</b></font>")
             self.ui.lblProviderSelectStatus.setText(status)
@@ -619,7 +621,7 @@ class Wizard(QtGui.QWizard):
         Sets the status for the download of the CA certificate check
         """
         self._complete_task(data, self.ui.lblDownloadCaCert)
-        passed = data[self._backend.PASSED_KEY]
+        passed = data[PASSED_KEY]
         if passed:
             self.ui.lblCheckCaFpr.setPixmap(self.QUESTION_ICON)
 
@@ -632,7 +634,7 @@ class Wizard(QtGui.QWizard):
         Sets the status for the CA fingerprint check
         """
         self._complete_task(data, self.ui.lblCheckCaFpr)
-        passed = data[self._backend.PASSED_KEY]
+        passed = data[PASSED_KEY]
         if passed:
             self.ui.lblCheckApiCert.setPixmap(self.QUESTION_ICON)
 
@@ -726,7 +728,7 @@ class Wizard(QtGui.QWizard):
                 self.page(pageId).setSubTitle(sub_title)
                 self.ui.lblDownloadCaCert.setPixmap(self.QUESTION_ICON)
                 self._provider_setup_defer = self._backend.\
-                    provider_bootstrap(self._domain)
+                    provider_bootstrap(provider=self._domain)
 
         if pageId == self.PRESENT_PROVIDER_PAGE:
             sub_title = self.tr("Description of services offered by {0}")
@@ -789,7 +791,7 @@ class Wizard(QtGui.QWizard):
         """
         Connects all the backend signals with the wizard.
         """
-        sig = self._backend.signaler
+        sig = self._leap_signaler
         conntrack = self._connect_and_track
         conntrack(sig.prov_name_resolution, self._name_resolution)
         conntrack(sig.prov_https_connection, self._https_connection)