ui: allow to use multiple protobuffer versions

Protobuffers compiled with protobuf < 3.20.0 are incompatible with
protobuf >= 4.0.0:
https://github.com/evilsocket/opensnitch/wiki/GUI-known-problems#gui-does-not-show-up

This has been a source of problems for some users (#1214, #647), and
in some distributions, previous protobuffer does no longer work due to
incompatibility with the protobuf package version installed
(OpenSuse Tumbleweed).

So in order to solve this issue, we provide several protobuffers,
for old and new protobuf versions:
proto/ui_pb2* for protobuf >= 4.0.0
proto/pre3200/ui_pb2* for protobuf >= 3.6.0 and < 3.20.0

To avoid import errors, each protobuffer must be placed in its own
directory, and the name of the protobuffer files must be named with
the syntax <prefix>_pb2.py/<prefix>_pb2_grpc.py:
  ui_pb2.py and ui_pb2_grpc.py

The default compiled protobuffer will be opensnitch/proto/ui_*.py
instead of opensnitch/ui_*.py

ui/MANIFEST.in

@@ -1,3 +1,4 @@
+recursive-include opensnitch/proto *
 recursive-include opensnitch/res *
 recursive-include opensnitch/i18n *.qm
 recursive-include opensnitch/database/migrations *.sql

ui/bin/opensnitch-ui

@@ -42,9 +42,10 @@ from opensnitch.service import UIService
 from opensnitch.config import Config
 from opensnitch.utils import Themes, Utils, Versions, Message
 from opensnitch.utils.xdg import xdg_opensnitch_dir, xdg_current_session
-import opensnitch.ui_pb2
-from opensnitch.ui_pb2_grpc import add_UIServicer_to_server
+
 from opensnitch import auth
+import opensnitch.proto as proto
+ui_pb2, ui_pb2_grpc = proto.import_()
 
 app_id = os.path.join(xdg_opensnitch_dir, "io.github.evilsocket.opensnitch")
 
@@ -203,7 +204,7 @@ Examples:
                                     ('grpc.max_receive_message_length', maxmsglen),
                                 ))
 
-        add_UIServicer_to_server(service, server)
+        ui_pb2_grpc.add_UIServicer_to_server(service, server)
 
         auth_type = auth.Simple
         if args.socket_auth != None:

ui/opensnitch/dialogs/firewall.py

@@ -11,10 +11,11 @@ from opensnitch.utils import Icons, Message
 from opensnitch.config import Config
 from opensnitch.nodes import Nodes
 from opensnitch.dialogs.firewall_rule import FwRuleDialog
-from opensnitch import ui_pb2
 import opensnitch.firewall as Fw
 import opensnitch.firewall.profiles as FwProfiles
 
+import opensnitch.proto as proto
+ui_pb2, ui_pb2_grpc = proto.import_()
 
 DIALOG_UI_PATH = "%s/../res/firewall.ui" % os.path.dirname(sys.modules[__name__].__file__)
 class FirewallDialog(QtWidgets.QDialog, uic.loadUiType(DIALOG_UI_PATH)[0]):

ui/opensnitch/dialogs/firewall_rule.py

@@ -9,10 +9,11 @@ from PyQt5.QtCore import QCoreApplication as QC
 from opensnitch.config import Config
 from opensnitch.nodes import Nodes
 from opensnitch.utils import NetworkServices, NetworkInterfaces, QuickHelp, Icons, Utils
-from opensnitch import ui_pb2
 import opensnitch.firewall as Fw
 from opensnitch.firewall.utils import Utils as FwUtils
 
+import opensnitch.proto as proto
+ui_pb2, ui_pb2_grpc = proto.import_()
 
 DIALOG_UI_PATH = "%s/../res/firewall_rule.ui" % os.path.dirname(sys.modules[__name__].__file__)
 class FwRuleDialog(QtWidgets.QDialog, uic.loadUiType(DIALOG_UI_PATH)[0]):

ui/opensnitch/dialogs/preferences.py

@@ -14,7 +14,9 @@ from opensnitch.utils import Message, QuickHelp, Themes, Icons, languages
 from opensnitch.utils.xdg import Autostart
 from opensnitch.notifications import DesktopNotifications
 
-from opensnitch import ui_pb2, auth
+from opensnitch import auth
+import opensnitch.proto as proto
+ui_pb2, ui_pb2_grpc = proto.import_()
 
 DIALOG_UI_PATH = "%s/../res/preferences.ui" % os.path.dirname(sys.modules[__name__].__file__)
 class PreferencesDialog(QtWidgets.QDialog, uic.loadUiType(DIALOG_UI_PATH)[0]):

ui/opensnitch/dialogs/processdetails.py

@@ -4,7 +4,9 @@ import json
 
 from PyQt5 import QtCore, QtGui, uic, QtWidgets
 
-from opensnitch import ui_pb2
+import opensnitch.proto as proto
+ui_pb2, ui_pb2_grpc = proto.import_()
+
 from opensnitch.nodes import Nodes
 from opensnitch.desktop_parser import LinuxDesktopParser
 from opensnitch.utils import Message, Icons

ui/opensnitch/dialogs/prompt.py

@@ -20,7 +20,8 @@ from opensnitch.version import version
 from opensnitch.actions import Actions
 from opensnitch.rules import Rules, Rule
 
-from opensnitch import ui_pb2
+import opensnitch.proto as proto
+ui_pb2, ui_pb2_grpc = proto.import_()
 
 DIALOG_UI_PATH = "%s/../res/prompt.ui" % os.path.dirname(sys.modules[__name__].__file__)
 class PromptDialog(QtWidgets.QDialog, uic.loadUiType(DIALOG_UI_PATH)[0]):

ui/opensnitch/dialogs/ruleseditor.py

@@ -7,10 +7,12 @@ import re
 import sys
 import os
 import pwd
-from opensnitch import ui_pb2
 import time
 import ipaddress
 
+import opensnitch.proto as proto
+ui_pb2, ui_pb2_grpc = proto.import_()
+
 from opensnitch.config import Config
 from opensnitch.nodes import Nodes
 from opensnitch.database import Database

ui/opensnitch/dialogs/stats.py

@@ -8,7 +8,6 @@ import io
 from PyQt5 import QtCore, QtGui, uic, QtWidgets
 from PyQt5.QtCore import QCoreApplication as QC
 
-from opensnitch import ui_pb2
 from opensnitch.config import Config
 from opensnitch.version import version
 from opensnitch.nodes import Nodes
@@ -27,6 +26,9 @@ from opensnitch.utils.xdg import xdg_current_desktop
 from opensnitch.actions import Actions
 from opensnitch.rules import Rule, Rules
 
+import opensnitch.proto as proto
+ui_pb2, ui_pb2_grpc = proto.import_()
+
 DIALOG_UI_PATH = "%s/../res/stats.ui" % os.path.dirname(sys.modules[__name__].__file__)
 class StatsDialog(QtWidgets.QDialog, uic.loadUiType(DIALOG_UI_PATH)[0]):
 

ui/opensnitch/firewall/__init__.py

@@ -1,6 +1,7 @@
 from PyQt5.QtCore import QObject, QCoreApplication as QC
 from google.protobuf import json_format
-from opensnitch import ui_pb2
+import opensnitch.proto as proto
+ui_pb2, ui_pb2_grpc = proto.import_()
 
 from opensnitch.nodes import Nodes
 from .enums import *

ui/opensnitch/firewall/chains.py

@@ -1,4 +1,6 @@
-from opensnitch import ui_pb2
+import opensnitch.proto as proto
+ui_pb2, ui_pb2_grpc = proto.import_()
+
 from .enums import *
 
 class Chains():

ui/opensnitch/firewall/exprs.py

@@ -1,5 +1,7 @@
 
-from opensnitch import ui_pb2
+import opensnitch.proto as proto
+ui_pb2, ui_pb2_grpc = proto.import_()
+
 from .enums import *
 
 class Expr():

ui/opensnitch/firewall/rules.py

@@ -3,7 +3,9 @@ from PyQt5.QtCore import QCoreApplication as QC
 from google.protobuf.json_format import MessageToJson
 import uuid
 
-from opensnitch import ui_pb2
+import opensnitch.proto as proto
+ui_pb2, ui_pb2_grpc = proto.import_()
+
 from .enums import Operator
 from .exprs import ExprLog
 

ui/opensnitch/nodes.py

@@ -4,12 +4,14 @@ from datetime import datetime
 import time
 import json
 
-from opensnitch import ui_pb2
 from opensnitch.database import Database
 from opensnitch.config import Config
 from opensnitch.utils import NetworkInterfaces
 from opensnitch.rules import Rules
 
+import opensnitch.proto as proto
+ui_pb2, ui_pb2_grpc = proto.import_()
+
 class Nodes(QObject):
     __instance = None
     nodesUpdated = pyqtSignal(int) # total

ui/opensnitch/proto/__init__.py

@@ -0,0 +1,57 @@
+#   Copyright (C) 2018      Simone Margaritelli
+#                 2019-2025 Gustavo Iñiguez Goia
+#
+#   This file is part of OpenSnitch.
+#
+#   OpenSnitch 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.
+#
+#   OpenSnitch 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 OpenSnitch.  If not, see <http://www.gnu.org/licenses/>.
+
+from packaging.version import Version
+import importlib
+from opensnitch.utils import Versions
+
+# Protobuffers compiled with protobuf < 3.20.0 are incompatible with
+# protobuf >= 4.0.0
+# https://github.com/evilsocket/opensnitch/wiki/GUI-known-problems#gui-does-not-show-up
+#
+# In order to solve this issue, we provide several protobuffers:
+# proto.ui_pb2* for protobuf >= 4.0.0
+# proto.pre3200.ui_pb2* for protobuf >= 3.6.0 and < 3.20.0
+#
+# To avoid import errors, each protobuffer must be placed in its own directory,
+# and the name of the protobuffer files must be named with the syntax
+# <prefix>_pb2.py/<prefix>_pb2_grpc.py:
+#  ui_pb2.py and ui_pb2_grpc.py
+
+default_pb = "opensnitch.proto.ui_pb2"
+default_grpc = "opensnitch.proto.ui_pb2_grpc"
+old_pb = "opensnitch.proto.pre3200.ui_pb2"
+old_grpc = "opensnitch.proto.pre3200.ui_pb2_grpc"
+
+def import_():
+    """load the protobuffer needed based on the grpc and protobuffer version
+    installed in the system.
+    """
+    try:
+        gui_version, grpc_version, proto_version = Versions.get()
+        proto_ver = default_pb
+        grpc_ver = default_grpc
+
+        if Version(proto_version) < Version("3.20.0"):
+            proto_ver = old_pb
+            grpc_ver = old_grpc
+
+        return importlib.import_module(proto_ver), importlib.import_module(grpc_ver)
+    except Exception as e:
+        print("error importing protobuffer: ", repr(e))
+        return importlib.import_module(default_pb, default_grpc)

ui/opensnitch/proto/pre3200/ui_pb2_grpc.py

@@ -0,0 +1,114 @@
+# Generated by the gRPC Python protocol compiler plugin. DO NOT EDIT!
+import grpc
+
+from . import ui_pb2 as ui__pb2
+
+
+class UIStub(object):
+  # missing associated documentation comment in .proto file
+  pass
+
+  def __init__(self, channel):
+    """Constructor.
+
+    Args:
+      channel: A grpc.Channel.
+    """
+    self.Ping = channel.unary_unary(
+        '/protocol.UI/Ping',
+        request_serializer=ui__pb2.PingRequest.SerializeToString,
+        response_deserializer=ui__pb2.PingReply.FromString,
+        )
+    self.AskRule = channel.unary_unary(
+        '/protocol.UI/AskRule',
+        request_serializer=ui__pb2.Connection.SerializeToString,
+        response_deserializer=ui__pb2.Rule.FromString,
+        )
+    self.Subscribe = channel.unary_unary(
+        '/protocol.UI/Subscribe',
+        request_serializer=ui__pb2.ClientConfig.SerializeToString,
+        response_deserializer=ui__pb2.ClientConfig.FromString,
+        )
+    self.Notifications = channel.stream_stream(
+        '/protocol.UI/Notifications',
+        request_serializer=ui__pb2.NotificationReply.SerializeToString,
+        response_deserializer=ui__pb2.Notification.FromString,
+        )
+    self.PostAlert = channel.unary_unary(
+        '/protocol.UI/PostAlert',
+        request_serializer=ui__pb2.Alert.SerializeToString,
+        response_deserializer=ui__pb2.MsgResponse.FromString,
+        )
+
+
+class UIServicer(object):
+  # missing associated documentation comment in .proto file
+  pass
+
+  def Ping(self, request, context):
+    # missing associated documentation comment in .proto file
+    pass
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+  def AskRule(self, request, context):
+    # missing associated documentation comment in .proto file
+    pass
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+  def Subscribe(self, request, context):
+    # missing associated documentation comment in .proto file
+    pass
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+  def Notifications(self, request_iterator, context):
+    # missing associated documentation comment in .proto file
+    pass
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+  def PostAlert(self, request, context):
+    # missing associated documentation comment in .proto file
+    pass
+    context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+    context.set_details('Method not implemented!')
+    raise NotImplementedError('Method not implemented!')
+
+
+def add_UIServicer_to_server(servicer, server):
+  rpc_method_handlers = {
+      'Ping': grpc.unary_unary_rpc_method_handler(
+          servicer.Ping,
+          request_deserializer=ui__pb2.PingRequest.FromString,
+          response_serializer=ui__pb2.PingReply.SerializeToString,
+      ),
+      'AskRule': grpc.unary_unary_rpc_method_handler(
+          servicer.AskRule,
+          request_deserializer=ui__pb2.Connection.FromString,
+          response_serializer=ui__pb2.Rule.SerializeToString,
+      ),
+      'Subscribe': grpc.unary_unary_rpc_method_handler(
+          servicer.Subscribe,
+          request_deserializer=ui__pb2.ClientConfig.FromString,
+          response_serializer=ui__pb2.ClientConfig.SerializeToString,
+      ),
+      'Notifications': grpc.stream_stream_rpc_method_handler(
+          servicer.Notifications,
+          request_deserializer=ui__pb2.NotificationReply.FromString,
+          response_serializer=ui__pb2.Notification.SerializeToString,
+      ),
+      'PostAlert': grpc.unary_unary_rpc_method_handler(
+          servicer.PostAlert,
+          request_deserializer=ui__pb2.Alert.FromString,
+          response_serializer=ui__pb2.MsgResponse.SerializeToString,
+      ),
+  }
+  generic_handler = grpc.method_handlers_generic_handler(
+      'protocol.UI', rpc_method_handlers)
+  server.add_generic_rpc_handlers((generic_handler,))

ui/opensnitch/proto/ui_pb2_grpc.py

@@ -0,0 +1,198 @@
+# Generated by the gRPC Python protocol compiler plugin. DO NOT EDIT!
+"""Client and server classes corresponding to protobuf-defined services."""
+import grpc
+
+from . import ui_pb2 as ui__pb2
+
+
+class UIStub(object):
+    """Missing associated documentation comment in .proto file."""
+
+    def __init__(self, channel):
+        """Constructor.
+
+        Args:
+            channel: A grpc.Channel.
+        """
+        self.Ping = channel.unary_unary(
+                '/protocol.UI/Ping',
+                request_serializer=ui__pb2.PingRequest.SerializeToString,
+                response_deserializer=ui__pb2.PingReply.FromString,
+                )
+        self.AskRule = channel.unary_unary(
+                '/protocol.UI/AskRule',
+                request_serializer=ui__pb2.Connection.SerializeToString,
+                response_deserializer=ui__pb2.Rule.FromString,
+                )
+        self.Subscribe = channel.unary_unary(
+                '/protocol.UI/Subscribe',
+                request_serializer=ui__pb2.ClientConfig.SerializeToString,
+                response_deserializer=ui__pb2.ClientConfig.FromString,
+                )
+        self.Notifications = channel.stream_stream(
+                '/protocol.UI/Notifications',
+                request_serializer=ui__pb2.NotificationReply.SerializeToString,
+                response_deserializer=ui__pb2.Notification.FromString,
+                )
+        self.PostAlert = channel.unary_unary(
+                '/protocol.UI/PostAlert',
+                request_serializer=ui__pb2.Alert.SerializeToString,
+                response_deserializer=ui__pb2.MsgResponse.FromString,
+                )
+
+
+class UIServicer(object):
+    """Missing associated documentation comment in .proto file."""
+
+    def Ping(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
+    def AskRule(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
+    def Subscribe(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
+    def Notifications(self, request_iterator, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
+    def PostAlert(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
+
+def add_UIServicer_to_server(servicer, server):
+    rpc_method_handlers = {
+            'Ping': grpc.unary_unary_rpc_method_handler(
+                    servicer.Ping,
+                    request_deserializer=ui__pb2.PingRequest.FromString,
+                    response_serializer=ui__pb2.PingReply.SerializeToString,
+            ),
+            'AskRule': grpc.unary_unary_rpc_method_handler(
+                    servicer.AskRule,
+                    request_deserializer=ui__pb2.Connection.FromString,
+                    response_serializer=ui__pb2.Rule.SerializeToString,
+            ),
+            'Subscribe': grpc.unary_unary_rpc_method_handler(
+                    servicer.Subscribe,
+                    request_deserializer=ui__pb2.ClientConfig.FromString,
+                    response_serializer=ui__pb2.ClientConfig.SerializeToString,
+            ),
+            'Notifications': grpc.stream_stream_rpc_method_handler(
+                    servicer.Notifications,
+                    request_deserializer=ui__pb2.NotificationReply.FromString,
+                    response_serializer=ui__pb2.Notification.SerializeToString,
+            ),
+            'PostAlert': grpc.unary_unary_rpc_method_handler(
+                    servicer.PostAlert,
+                    request_deserializer=ui__pb2.Alert.FromString,
+                    response_serializer=ui__pb2.MsgResponse.SerializeToString,
+            ),
+    }
+    generic_handler = grpc.method_handlers_generic_handler(
+            'protocol.UI', rpc_method_handlers)
+    server.add_generic_rpc_handlers((generic_handler,))
+
+
+ # This class is part of an EXPERIMENTAL API.
+class UI(object):
+    """Missing associated documentation comment in .proto file."""
+
+    @staticmethod
+    def Ping(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_unary(request, target, '/protocol.UI/Ping',
+            ui__pb2.PingRequest.SerializeToString,
+            ui__pb2.PingReply.FromString,
+            options, channel_credentials,
+            insecure, call_credentials, compression, wait_for_ready, timeout, metadata)
+
+    @staticmethod
+    def AskRule(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_unary(request, target, '/protocol.UI/AskRule',
+            ui__pb2.Connection.SerializeToString,
+            ui__pb2.Rule.FromString,
+            options, channel_credentials,
+            insecure, call_credentials, compression, wait_for_ready, timeout, metadata)
+
+    @staticmethod
+    def Subscribe(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_unary(request, target, '/protocol.UI/Subscribe',
+            ui__pb2.ClientConfig.SerializeToString,
+            ui__pb2.ClientConfig.FromString,
+            options, channel_credentials,
+            insecure, call_credentials, compression, wait_for_ready, timeout, metadata)
+
+    @staticmethod
+    def Notifications(request_iterator,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.stream_stream(request_iterator, target, '/protocol.UI/Notifications',
+            ui__pb2.NotificationReply.SerializeToString,
+            ui__pb2.Notification.FromString,
+            options, channel_credentials,
+            insecure, call_credentials, compression, wait_for_ready, timeout, metadata)
+
+    @staticmethod
+    def PostAlert(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_unary(request, target, '/protocol.UI/PostAlert',
+            ui__pb2.Alert.SerializeToString,
+            ui__pb2.MsgResponse.FromString,
+            options, channel_credentials,
+            insecure, call_credentials, compression, wait_for_ready, timeout, metadata)

ui/opensnitch/rules.py

@@ -1,10 +1,12 @@
 from PyQt5.QtCore import QObject, pyqtSignal
 
-from opensnitch import ui_pb2
 from opensnitch.database import Database
 from opensnitch.database.enums import RuleFields
 from opensnitch.config import Config
 
+import opensnitch.proto as proto
+ui_pb2, ui_pb2_grpc = proto.import_()
+
 import os
 import json
 from slugify import slugify

ui/opensnitch/service.py

@@ -12,8 +12,8 @@ import copy
 path = os.path.abspath(os.path.dirname(__file__))
 sys.path.append(path)
 
-from opensnitch import ui_pb2
-from opensnitch import ui_pb2_grpc
+import opensnitch.proto as proto
+ui_pb2, ui_pb2_grpc = proto.import_()
 
 from opensnitch.dialogs.prompt import PromptDialog
 from opensnitch.dialogs.stats import StatsDialog

utils/packaging/ui/deb/debian/rules

@@ -6,32 +6,21 @@
 %:
 	dh $@ --with python3 --buildsystem=python_distutils
 
-
 override_dh_auto_clean:
 	rm -f opensnitch/resources_rc.py
 	rm -rf opensnitch/i18n/
 	python3 setup.py clean -a
 	find . -name \*.pyc -exec rm {} \;
 
-
-
 override_dh_auto_build:
 	python3 setup.py build --force
 
-
-
 override_dh_auto_install:
 	cd i18n; make
 	cp -r i18n/locales/ opensnitch/i18n/
 	pyrcc5 -o opensnitch/resources_rc.py opensnitch/res/resources.qrc
-	sed -i 's/^import ui_pb2/from . import ui_pb2/' opensnitch/ui_pb2*
+	find opensnitch/proto/ -name 'ui_pb2_grpc.py' -exec sed -i 's/^import ui_pb2/from . import ui_pb2/' {} \;
 	python3 setup.py install --force --root=debian/python3-opensnitch-ui --no-compile -O0 --install-layout=deb  
 
-
-
 override_dh_python2:
 	dh_python2 --no-guessing-versions
-
-
-
-