Remove ESessions Plugin

esessions/__init__.py

-from .esessions import ESessionsPlugin

esessions/esessions.py

-# -*- coding: utf-8 -*-
-
-'''
-Copyright 2017 Philipp Hörist <philipp@hoerist.com>
-
-This file is part of Gajim.
-
-Gajim 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; version 3 only.
-
-Gajim 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 Gajim. If not, see <http://www.gnu.org/licenses/>.
-'''
-
-
-import logging
-
-import nbxmpp
-
-from gajim import dialogs
-from gajim import gtkgui_helpers
-
-from gajim.common import app
-from gajim.common.connection_handlers_events import (
-    FailedDecryptEvent, MamMessageReceivedEvent)
-from gajim.plugins import GajimPlugin
-
-log = logging.getLogger('gajim.plugin_system.esessions')
-
-ERROR_MSG = ''
-if hasattr(app, 'HAVE_PYCRYPTO'):
-    # Gajim 1.0.0
-    CRYPTO_AVAILABLE = app.HAVE_PYCRYPTO
-else:
-    # Gajim 1.0.3+
-    CRYPTO_AVAILABLE = app.is_installed('PYCRYPTO')
-if not CRYPTO_AVAILABLE:
-    ERROR_MSG = 'Please install pycrypto'
-
-
-class ESessionsPlugin(GajimPlugin):
-
-    def init(self):
-        """ Init """
-        if ERROR_MSG:
-            # self.activatable = False
-            self.available_text = ERROR_MSG
-        self.config_dialog = None
-        self.encryption_name = 'ESessions'
-        self.config_dialog = None
-        self.gui_extension_points = {
-            'decrypt': (self._message_received, None),
-            'encrypt' + self.encryption_name: (self._encrypt_message, None),
-            'send_message' + self.encryption_name: (
-                self._before_sendmessage, None),
-            'encryption_dialog' + self.encryption_name: (
-                self.encryption_dialog, None),
-            'encryption_state' + self.encryption_name: (
-                self.encryption_state, None),
-            'typing' + self.encryption_name: (
-                self.typing, None)}
-
-    def activate(self):
-        pass
-
-    def deactivate(self):
-        pass
-
-    @staticmethod
-    def activate_encryption(chat_control):
-        contact = chat_control.contact
-        useable = contact.supports(nbxmpp.NS_ESESSION)
-        if useable:
-            chat_control.activate_esessions()
-        return bool(useable)
-
-    @staticmethod
-    def encryption_dialog(chat_control):
-        ESessionInfoWindow(chat_control.session,
-                           chat_control.parent_win.window)
-
-    @staticmethod
-    def encryption_state(chat_control, state):
-        session = chat_control.session
-        if not session:
-            return
-        authenticated = chat_control.session.verified_identity
-        state['authenticated'] = session and authenticated
-        state['visible'] = True
-
-    @staticmethod
-    def typing(chat_control):
-        contact = chat_control.contact
-        enabled = chat_control.session.enable_encryption
-        if contact.supports(nbxmpp.NS_ESESSION):
-            if not (chat_control.session and enabled):
-                if not chat_control.no_autonegotiation:
-                    chat_control.activate_esessions()
-
-    @staticmethod
-    def _before_sendmessage(chat_control):
-        enabled = chat_control.session.enable_encryption
-        if not (chat_control.session and enabled):
-            dialogs.ErrorDialog(
-                _('No Session'),
-                _('You have no valid Session with that contact.'))
-            chat_control.sendmessage = False
-
-    def _message_received(self, conn, obj, callback):
-        if obj.encrypted:
-            # Another Plugin already decrypted the message
-            return
-        if isinstance(obj, MamMessageReceivedEvent):
-            # Esessions doesnt support MAM Messages
-            return
-        if obj.forwarded:
-            # Esessions cant decrypt Carbon Copys
-            return
-        if obj.stanza.getTag('feature', namespace=nbxmpp.NS_FEATURE):
-            if CRYPTO_AVAILABLE:
-                feature = obj.stanza.getTag(name='feature',
-                                            namespace=nbxmpp.NS_FEATURE)
-                form = nbxmpp.DataForm(node=feature.getTag('x'))
-                if not form:
-                    return
-
-                if not form.getField('FORM_TYPE'):
-                    return
-
-                if form['FORM_TYPE'] == 'urn:xmpp:ssn':
-                    obj.session.handle_negotiation(form)
-                else:
-                    reply = obj.stanza.buildReply()
-                    reply.setType('error')
-                    reply.addChild(feature)
-                    err = nbxmpp.ErrorNode('service-unavailable', typ='cancel')
-                    reply.addChild(node=err)
-                    conn.connection.send(reply)
-            return
-
-        if obj.stanza.getTag('init', namespace=nbxmpp.NS_ESESSION_INIT):
-            init = obj.stanza.getTag(name='init',
-                                     namespace=nbxmpp.NS_ESESSION_INIT)
-            form = nbxmpp.DataForm(node=init.getTag('x'))
-
-            obj.session.handle_negotiation(form)
-            return
-
-        encrypted = obj.stanza.getTag(
-            'c', namespace=nbxmpp.NS_STANZA_CRYPTO)
-        if encrypted:
-            try:
-                obj.stanza = obj.session.decrypt_stanza(obj.stanza)
-                obj.msgtxt = obj.stanza.getBody()
-                obj.encrypted = 'ESessions'
-                callback(obj)
-            except Exception:
-                app.nec.push_incoming_event(
-                    FailedDecryptEvent(None, conn=conn, msg_obj=obj))
-                return
-
-    def _encrypt_message(self, conn, obj, callback):
-        if obj.session.enable_encryption:
-            obj.msg_iq = obj.session.encrypt_stanza(obj.msg_iq)
-            obj.msg_iq.addChild(name='private', namespace=nbxmpp.NS_CARBONS)
-            obj.msg_iq.addChild(name='no-permanent-store',
-                                namespace=nbxmpp.NS_MSG_HINTS)
-            obj.msg_iq.addChild(name='no-copy',
-                                namespace=nbxmpp.NS_MSG_HINTS)
-            eme_node = nbxmpp.Node('encryption',
-                                   attrs={'xmlns': nbxmpp.NS_EME,
-                                          'name': 'ESessions',
-                                          'namespace': nbxmpp.NS_STANZA_CRYPTO})
-            obj.msg_iq.addChild(node=eme_node)
-        callback(obj)
-
-
-class ESessionInfoWindow:
-    """
-    Class for displaying information about a XEP-0116 encrypted session
-    """
-    def __init__(self, session, transient_for=None):
-        self.session = session
-
-        self.xml = gtkgui_helpers.get_gtk_builder('esession_info_window.ui')
-        self.xml.connect_signals(self)
-
-        self.security_image = self.xml.get_object('security_image')
-        self.verify_now_button = self.xml.get_object('verify_now_button')
-        self.button_label = self.xml.get_object('verification_status_label')
-        self.window = self.xml.get_object('esession_info_window')
-        self.update_info()
-        self.window.set_transient_for(transient_for)
-
-        self.window.show_all()
-
-    def get_sas(self):
-        sas = ''
-        if hasattr(self.session, 'sas'):
-            sas = self.session.sas
-        return sas
-
-    def update_info(self):
-
-        labeltext = _(
-            '''Your chat session with <b>%(jid)s</b> is encrypted.\n\n
-            This session's Short Authentication String is <b>%(sas)s</b>.
-            ''') % {'jid': self.session.jid, 'sas': self.get_sas()}
-
-        if self.session.verified_identity:
-            labeltext += '\n\n' + _(
-                '''You have already verified this contact's identity.''')
-            security_image = 'security-high'
-            if self.session.control:
-                self.session.control.set_lock_image()
-
-            verification_status = _('''Contact's identity verified''')
-            self.window.set_title(verification_status)
-            self.xml.get_object('verification_status_label').set_markup(
-                '<b><span size="x-large">%s</span></b>' % verification_status)
-
-            self.xml.get_object('dialog-action_area1').set_no_show_all(True)
-            self.button_label.set_text(_('Verify again…'))
-        else:
-            if self.session.control:
-                self.session.control.set_lock_image()
-            labeltext += '\n\n' + _(
-                '''To be certain that <b>only</b> the expected person can read
-                your messages or send you messages, you need to verify their
-                identity by clicking the button below.''')
-            security_image = 'security-low'
-
-            verification_status = _('''Contact's identity NOT verified''')
-            self.window.set_title(verification_status)
-            self.xml.get_object('verification_status_label').set_markup(
-                '<b><span size="x-large">%s</span></b>' % verification_status)
-
-            self.button_label.set_text(_('Verify…'))
-
-        path = gtkgui_helpers.get_icon_path(security_image, 32)
-        self.security_image.set_from_file(path)
-
-        self.xml.get_object('info_display').set_markup(labeltext)
-
-    def on_close_button_clicked(self, widget):
-        self.window.destroy()
-
-    def on_verify_now_button_clicked(self, widget):
-        pritext = _('''Have you verified the contact's identity?''')
-        sectext = _('''
-            To prevent talking to an unknown person, you should
-            speak to <b>%(jid)s</b> directly (in person or on the phone)
-            and verify that they see the same Short Authentication String (SAS)
-            as you.\n\n
-            This session's Short Authentication String is <b>%(sas)s</b>.
-            ''') % {'jid': self.session.jid, 'sas': self.get_sas()}
-        sectext += '\n\n' + _(
-            'Did you talk to the remote contact and verify the SAS?')
-
-        def on_yes(checked):
-            self.session._verified_srs_cb()
-            self.session.verified_identity = True
-            self.update_info()
-
-        def on_no():
-            self.session._unverified_srs_cb()
-            self.session.verified_identity = False
-            self.update_info()
-
-        dialogs.YesNoDialog(pritext, sectext,
-                            on_response_yes=on_yes,
-                            on_response_no=on_no,
-                            transient_for=self.window)

esessions/manifest.ini

-[info]
-name: ESessions
-short_name: esessions
-version: 1.1.2
-description: Encryption as per XEP-0200
-authors: Philipp Hörist <philipp@hoerist.com>
-homepage: https://dev.gajim.org/gajim/gajim-plugins/wikis/esessions
-min_gajim_version: 0.16.11