omemo/0000755000175500017550000000000014155075457011741 5ustar debacledebacleomemo/CHANGELOG0000644000175500017550000001335614155075457013163 0ustar debacledebacle2.7.13 / 2021-01-08 - Fix file download 2.7.12 / 2020-12-06 - Adapt to Gajim changes 2.7.11 / 2020-10-19 - Adapt to nbxmpp changes 2.7.10 / 2020-10-11 - Adapt to nbxmpp changes 2.7.9 / 2020-09-19 - Adapt to Gajim changes 2.7.8 / 2020-09-12 - Remove not needed code 2.7.7 / 2020-06-28 - Add hints for the fingerprint dialog 2.7.6 / 2020-06-24 - Implement Blind Trust Before Verification - Show outgoing messages as VERIFIED 2.7.5 / 2020-06-21 - Don't drop message silently on decryption error - Don't include inactive devices on checking undecided trust 2.7.4 / 2020-05-23 - Sanitize BLOBs in database 2.7.3 / 2020-05-21 - Set sqlite text_factory to str 2.7.2 / 2020-05-21 - Use PEP-440 compatible version 2.7.1 / 2020-04-30 - Don't use deprecated attribute - Use nbxmpp.namespaces 2.6.75 / 2020-04-04 - Adapt updating caps 2.6.74 / 2020-02-14 - Switch to 12 byte IV 2.6.73 / 2020-01-19 - Don't show warning for Key Transport messages 2.6.72 / 2020-01-17 - Add back 12 byte IV read support for aesgcm links 2.6.71 / 2019-12-29 - Refactor file downloads 2.6.70 / 2019-12-18 - Adapt to Gajim HTTPUpload changes 2.6.69 / 2019-12-06 - Adapt to nbxmpp changes 2.6.68 / 2019-11-18 - Correctly handle presence in anonymous rooms - Fix error in config dialog if no account is available 2.6.67 / 2019-11-10 - Correctly handle MAM Messages in anonymous rooms - Show error when message was not encrypted for our device - Be consistent about omemo capable rooms 2.6.66 / 2019-10-05 - Adapt to nbxmpp changes 2.6.65 / 2019-08-21 - Fix printing status message 2.6.64 / 2019-08-20 - Set trust per JID 2.6.63 / 2019-08-19 - Fix ConfirmationDialog 2.6.62 / 2019-07-09 - Remove YesNoDialog 2.6.61 / 2019-06-30 - Dont validate JID on affiliation result 2.6.60 / 2019-06-22 - Adapt to Gajim changes 2.6.59 / 2019-04-27 - Adapt to link handler changes 2.6.58 / 2019-03-31 - Fix group chat messages 2.6.57 / 2019-03-26 - Refactoring 2.6.56 / 2019-03-25 - Fix database version 2.6.55 / 2019-03-24 - Fix database migration 2.6.54 / 2019-03-24 - Fix database bug with old values 2.6.53 / 2019-03-20 - Pass trust to Gajim - Bug Fix 2.6.52 / 2019-03-11 - Bug Fix 2.6.51 / 2019-03-08 - Fix endless devicelist update loop - Build sessions immediately - Dont allow sending message while having undecided fingerprints - Improve logging 2.6.50 / 2019-02-24 - Add support for key transport messages - Bug Fixes 2.6.49 / 2019-02-24 - GUI Improvements for Key Dialog 2.6.48 / 2019-02-22 - Bug Fixes 2.6.47 / 2019-02-22 - Bug Fixes 2.6.46 / 2019-02-22 - Bug Fixes 2.6.45 / 2019-02-21 - Set device inactive after 300 unacknowledged messages - Small refactoring - Fix a bug where the KeyDialog could not be opened 2.6.44 / 2019-02-18 - Fix error while loading keys from database 2.6.43 / 2019-02-17 - Refactor 2.6.42 / 2019-02-13 - Refactor 2.6.41 / 2019-02-11 - Refactor 2.6.40 / 2019-01-05 - Fix label color - Add fallback body 2.6.39 / 2019-01-04 - Adapt to Gajim changes 2.6.38 / 2019-01-01 - Add new devicelist module - Fix deprecation warnings - Fix an error in non-anonymous MUCs 2.6.37 / 2019-01-01 - Adapt to Gajim and nbxmpp changes 2.6.36 / 2018-12-22 - Fix carbon messages not working 2.6.35 / 2018-12-15 - Better handle key exchange messages 2.6.34 / 2018-11-20 - Use "current" as pubsub node id 2.6.33 / 2018-10-17 - Bug fix 2.6.32 / 2018-10-13 - Bug fix 2.6.31 / 2018-10-12 - GUI adjustments - Use new fingerprints dialog - Refactor some UI code 2.6.1 / 2018-08-08 - Save encryption details to the database - Bugfixes 2.6.0 / 2018-08-08 - FingerprintDialog: show all fingerprints in one list 2.5.14 / 2018-07-15 - Make preparations for future Gajim versions - Allow writing encrypted messages in groupchats if there are no other participants 2.5.14 / 2018-07-15 - Make preparations for future Gajim versions - Allow writing encrypted messages in groupchats if there are no other participants 2.5.13 / 2018-05-21 - Bug fix 2.5.12 / 2018-05-20 - Bug fix 2.5.11 / 2018-04-25 - Bug fix 2.5.10 / 2018-04-09 - Bug fix 2.5.9 / 2018-04-08 - Remove pycrypo dependency 2.5.8 / 2018-03-31 - Bug fix 2.5.7 / 2018-02-26 - Big fix 2.5.6 / 2018-01-26 - Fix decrypting MAM MUC messages 2.5.5 / 2017-12-17 - Bug fix 2.5.4 / 2017-12-16 - Bug fix 2.5.3 / 2017-12-10 - Bug fix 2.5.2 / 2017-12-10 - Small refactoring 2.5.1 / 2017-11-21 - Bug fix 2.5.0 / 2017-11-20 - Add MAM for MUC decryption 2.4.3 / 2017-11-15 - Use Gajim API to announce caps 2.4.2 / 2017-11-15 - Query devicelists for contacts where we have none, this makes us a bit more independent from PEP - Fix encrypting in Groupchats - Improve error messages 2.4.1 / 2017-11-12 - Bug fix 2.4.0 / 2017-11-10 - Refactoring 2.3.8 / 2017-10-07 - Bug Fixes 2.3.7 / 2017-08-26 - Query only the most recent PEP items 2.3.6 / 2017-08-21 - Adapt to Gaim being now a Package 2.3.5 / 2017-08-07 - Support 12bit IVs on httpupload files 2.3.4 / 2017-06-10 - Bugfixes - Some Refactoring 2.3.3 / 2017-06-09 - Move encryption logic for files from the HTTPUploadPlugin to the OMEMOPlugin 2.3.2 / 2017-06-02 - Adapt to patches regarding LMC in Gajim 2.3.1 / 2017-05-23 - Bugfixes 2.3.0 / 2017-05-07 - Make plugin compatible with Gajims encryption API 2.2.1 / 2017-04-15 - Recognize aesgcm uri scheme 2.2.0 / 2017-04-06 - Add auth tag to key instead of payload - Support decryption of aesgcm:// uri scheme - Make python-cryptography mandatory - small bugfixes 2.1.0 / 2017-03-26 - Add file decryption 2.0.4 / 2017-03-01 - Use correct tag name for EME 2.0.3 / 2017-02-28 - Set an inactive device active again after receiving a message from it 2.0.2 / 2017-02-28 - Fix a bug when publishing devices - Fix copying fingerprint - Fix layout issue - Don't handle type 'normal' messages 2.0.1 / 2017-01-14 - Better XEP Compliance - Bugfixes 2.0.0 / 2016-12-04 - Port Plugin from GTK2 omemo/gtk/0000755000175500017550000000000014155075457012526 5ustar debacledebacleomemo/gtk/key.ui0000644000175500017550000003250414155075457013661 0ustar debacledebacle False none True False 12 vertical 12 True False True False True 0 True False False True 1 True False For verification via QR-Code you have to install python-qrcode False True 2 False True True False edit-find-symbolic False False True False vertical True False True True False False end False False 0 False 6 True False dialog-information-symbolic 3 False True 0 True False vertical True False Click the shield icon to manage trust for each fingerprint. True 46 0 False True 0 True False Read more on blind trust. 0 False True 1 True True 1 False False 0 False True 0 True False 18 12 True False start 11 True False False True 0 True False False True 1 0 0 True True True end center search_popover True False edit-find-symbolic 1 0 True True True never in 270 False True False True False none 0 1 2 True True True end center up popover True False Own Fingerprint 1 2 True False start center 12 True True False True 0 True False Show inactive False True 1 0 2 False True 1 omemo/gtk/progress.ui0000644000175500017550000001232514155075457014734 0ustar debacledebacle True 18 Download False center-on-parent True go-down dialog 250 True False 12 True False end True False 2 4 3 gtk-cancel True True True False True False True 2 False False end 0 True False OMEMO 6 False True 0 True False 8 4 8 8 True False True False True 1 True False 4 4 8 8 True False 0.10000000149 True False True 2 omemo/gtk/__init__.py0000644000175500017550000000000014155075457014625 0ustar debacledebacleomemo/gtk/config.py0000644000175500017550000001451514155075457014353 0ustar debacledebacle# Copyright (C) 2019 Philipp Hörist # Copyright (C) 2015 Bahtiar `kalkin-` Gadimov # Copyright (C) 2015 Daniel Gultsch # # This file is part of OMEMO Gajim Plugin. # # OMEMO Gajim Plugin 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. # # OMEMO Gajim Plugin 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 OMEMO Gajim Plugin. If not, see . import logging from gajim.common import app from gajim.plugins.gui import GajimPluginConfigDialog from gajim.plugins.helpers import get_builder from omemo.backend.util import get_fingerprint log = logging.getLogger('gajim.p.omemo') class OMEMOConfigDialog(GajimPluginConfigDialog): def init(self): # pylint: disable=attribute-defined-outside-init path = self.plugin.local_file_path('gtk/config.ui') self._ui = get_builder(path) image_path = self.plugin.local_file_path('omemo.png') self._ui.image.set_from_file(image_path) try: self.disabled_accounts = self.plugin.config['DISABLED_ACCOUNTS'] except KeyError: self.plugin.config['DISABLED_ACCOUNTS'] = [] self.disabled_accounts = self.plugin.config['DISABLED_ACCOUNTS'] box = self.get_content_area() box.pack_start(self._ui.notebook1, True, True, 0) self._ui.connect_signals(self) self.plugin_active = False def on_run(self): for plugin in app.plugin_manager.active_plugins: log.debug(type(plugin)) if type(plugin).__name__ == 'OmemoPlugin': self.plugin_active = True break self.update_account_store() self.update_account_combobox() self.update_disabled_account_view() self.update_settings() def is_in_accountstore(self, account): for row in self._ui.account_store: if row[0] == account: return True return False def update_account_store(self): for account in sorted(app.contacts.get_accounts()): if account in self.disabled_accounts: continue if account == 'Local': continue if not self.is_in_accountstore(account): self._ui.account_store.append(row=(account,)) def update_account_combobox(self): if self.plugin_active is False: return if len(self._ui.account_store): self._ui.account_combobox.set_active(0) else: self.account_combobox_changed_cb(self._ui.account_combobox) def account_combobox_changed_cb(self, box, *args): self.update_context_list() def update_disabled_account_view(self): self._ui.disabled_account_store.clear() for account in self.disabled_accounts: self._ui.disabled_account_store.append(row=(account,)) def activate_accounts_btn_clicked(self, _button, *args): selection = self._ui.disabled_accounts_view.get_selection() mod, paths = selection.get_selected_rows() for path in paths: it = mod.get_iter(path) account = mod.get(it, 0) if account[0] in self.disabled_accounts and \ not self.is_in_accountstore(account[0]): self._ui.account_store.append(row=(account[0],)) self.disabled_accounts.remove(account[0]) self.update_disabled_account_view() self.plugin.config['DISABLED_ACCOUNTS'] = self.disabled_accounts self.update_account_combobox() def disable_accounts_btn_clicked(self, _button, *args): selection = self._ui.active_accounts_view.get_selection() mod, paths = selection.get_selected_rows() for path in paths: it = mod.get_iter(path) account = mod.get(it, 0) if account[0] not in self.disabled_accounts and \ self.is_in_accountstore(account[0]): self.disabled_accounts.append(account[0]) self._ui.account_store.remove(it) self.update_disabled_account_view() self.plugin.config['DISABLED_ACCOUNTS'] = self.disabled_accounts self.update_account_combobox() def cleardevice_button_clicked_cb(self, button, *args): active = self._ui.account_combobox.get_active() account = self._ui.account_store[active][0] app.connections[account].get_module('OMEMO').clear_devicelist() self.update_context_list() def refresh_button_clicked_cb(self, button, *args): self.update_context_list() def _on_blind_trust(self, button): self.plugin.config['BLIND_TRUST'] = button.get_active() def update_context_list(self): self._ui.deviceid_store.clear() if not len(self._ui.account_store): self._ui.ID.set_markup('') self._ui.fingerprint_label.set_markup('') self._ui.refresh.set_sensitive(False) self._ui.cleardevice_button.set_sensitive(False) return active = self._ui.account_combobox.get_active() account = self._ui.account_store[active][0] # Set buttons active self._ui.refresh.set_sensitive(True) if account == 'Local': self._ui.cleardevice_button.set_sensitive(False) else: self._ui.cleardevice_button.set_sensitive(True) # Set FPR Label and DeviceID omemo = self.plugin.get_omemo(account) self._ui.ID.set_markup('%s' % omemo.backend.own_device) identity_key = omemo.backend.storage.getIdentityKeyPair() fpr = get_fingerprint(identity_key, formatted=True) self._ui.fingerprint_label.set_markup('%s' % fpr) own_jid = app.get_jid_from_account(account) # Set Device ID List for item in omemo.backend.get_devices(own_jid): self._ui.deviceid_store.append([item]) def update_settings(self): self._ui.blind_trust_checkbutton.set_active( self.plugin.config['BLIND_TRUST'])omemo/gtk/style.css0000644000175500017550000000113314155075457014376 0ustar debacledebacle.omemo-inactive-color { color: @insensitive_fg_color; } .omemo-qr-not-available {color: red;} .omemo-mono { font-size: 12px; font-family: monospace; } .omemo-last-seen { font-size: 11px; } .omemo-key-dialog scrolledwindow row { border-bottom: 1px solid; border-color: @unfocused_borders; padding: 10px 20px 10px 10px; } .omemo-key-dialog scrolledwindow row:last-child { border-bottom: 0px} .omemo-key-dialog scrolledwindow { border: 1px solid; border-color:@unfocused_borders; } .omemo-key-dialog list > row { outline: none; } .omemo-trust-popover row { padding: 10px 15px 10px 10px; } omemo/gtk/progress.py0000644000175500017550000000346014155075457014747 0ustar debacledebacle# Copyright (C) 2019 Philipp Hörist # # This file is part of OMEMO Gajim Plugin. # # OMEMO Gajim Plugin 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. # # OMEMO Gajim Plugin 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 OMEMO Gajim Plugin. If not, see . from gajim.plugins.helpers import get_builder class ProgressWindow: def __init__(self, plugin, window, event): self._plugin = plugin self._event = event path = self._plugin.local_file_path('gtk/progress.ui') self._ui = get_builder(path) self._ui.progress_dialog.set_transient_for(window) self._ui.progressbar.set_text("") self._ui.progress_dialog.show_all() image_path = self._plugin.local_file_path('omemo.png') self._ui.image.set_from_file(image_path) self._ui.connect_signals(self) self._seen = 0 def set_text(self, text): self._ui.label.set_markup('%s' % text) return False def update_progress(self, seen, total): self._seen += seen pct = (self._seen / float(total)) * 100.0 self._ui.progressbar.set_fraction(self._seen / float(total)) self._ui.progressbar.set_text(str(int(pct)) + "%") return False def close_dialog(self, *args): self._ui.progress_dialog.destroy() return False def on_destroy(self, *args): self._event.set() omemo/gtk/key.py0000644000175500017550000003616314155075457013701 0ustar debacledebacle# Copyright (C) 2019 Philipp Hörist # # This file is part of OMEMO Gajim Plugin. # # OMEMO Gajim Plugin 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. # # OMEMO Gajim Plugin 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 OMEMO Gajim Plugin. If not, see . import os import time import locale import logging import tempfile from packaging.version import Version as V from pkg_resources import get_distribution from gi.repository import Gtk from gi.repository import GdkPixbuf from gajim.common import app from gajim.plugins.plugins_i18n import _ from gajim.plugins.helpers import get_builder from gajim.gui.dialogs import ConfirmationDialog from gajim.gui.dialogs import DialogButton from omemo.backend.util import Trust from omemo.backend.util import IdentityKeyExtended from omemo.backend.util import get_fingerprint log = logging.getLogger('gajim.p.omemo') TRUST_DATA = { Trust.UNTRUSTED: ('dialog-error-symbolic', _('Untrusted'), 'error-color'), Trust.UNDECIDED: ('security-low-symbolic', _('Not Decided'), 'warning-color'), Trust.VERIFIED: ('security-high-symbolic', _('Verified'), 'encrypted-color'), Trust.BLIND: ('security-medium-symbolic', _('Blind Trust'), 'encrypted-color') } class KeyDialog(Gtk.Dialog): def __init__(self, plugin, contact, transient, windows, groupchat=False): super().__init__(title=_('OMEMO Fingerprints'), destroy_with_parent=True) self.set_transient_for(transient) self.set_resizable(True) self.set_default_size(500, 450) self.get_style_context().add_class('omemo-key-dialog') self._groupchat = groupchat self._contact = contact self._windows = windows self._account = self._contact.account.name self._plugin = plugin self._omemo = self._plugin.get_omemo(self._account) self._own_jid = app.get_jid_from_account(self._account) self._show_inactive = False path = self._plugin.local_file_path('gtk/key.ui') self._ui = get_builder(path) markup = '%s' % ( 'https://dev.gajim.org/gajim/gajim-plugins/-/' 'wikis/omemogajimplugin', _('Read more about blind trust.')) self._ui.btbv_link.set_markup(markup) self._ui.infobar.set_revealed( self._plugin.config['SHOW_HELP_FINGERPRINTS']) self._ui.header.set_text(_('Fingerprints for %s') % self._contact.jid) omemo_img_path = self._plugin.local_file_path('omemo.png') self._ui.omemo_image.set_from_file(omemo_img_path) self._ui.list.set_filter_func(self._filter_func, None) self._ui.list.set_sort_func(self._sort_func, None) self._identity_key = self._omemo.backend.storage.getIdentityKeyPair() ownfpr_format = get_fingerprint(self._identity_key, formatted=True) self._ui.own_fingerprint.set_text(ownfpr_format) self.get_content_area().add(self._ui.box) self.update() self._load_qrcode() self._ui.connect_signals(self) self.connect('destroy', self._on_destroy) self.show_all() def _on_infobar_response(self, _widget, response): if response == Gtk.ResponseType.CLOSE: self._ui.infobar.set_revealed(False) self._plugin.config['SHOW_HELP_FINGERPRINTS'] = False def _filter_func(self, row, _user_data): search_text = self._ui.search.get_text() if search_text and search_text.lower() not in str(row.jid): return False if self._show_inactive: return True return row.active @staticmethod def _sort_func(row1, row2, _user_data): result = locale.strcoll(str(row1.jid), str(row2.jid)) if result != 0: return result if row1.active != row2.active: return -1 if row1.active else 1 if row1.trust != row2.trust: return -1 if row1.trust > row2.trust else 1 return 0 def _on_search_changed(self, _entry): self._ui.list.invalidate_filter() def update(self): self._ui.list.foreach(self._ui.list.remove) self._load_fingerprints(self._own_jid) self._load_fingerprints(self._contact.jid, self._groupchat is True) def _load_fingerprints(self, contact_jid, groupchat=False): if groupchat: members = list(self._omemo.backend.get_muc_members(contact_jid)) sessions = self._omemo.backend.storage.getSessionsFromJids(members) else: sessions = self._omemo.backend.storage.getSessionsFromJid(contact_jid) rows = {} if groupchat: results = self._omemo.backend.storage.getMucFingerprints(members) else: results = self._omemo.backend.storage.getFingerprints(contact_jid) for result in results: rows[result.public_key] = KeyRow(result.recipient_id, result.public_key, result.trust, result.timestamp) for item in sessions: if item.record.isFresh(): return identity_key = item.record.getSessionState().getRemoteIdentityKey() identity_key = IdentityKeyExtended(identity_key.getPublicKey()) try: key_row = rows[identity_key] except KeyError: log.warning('Could not find session identitykey %s', item.device_id) self._omemo.backend.storage.deleteSession(item.recipient_id, item.device_id) continue key_row.active = item.active key_row.device_id = item.device_id for row in rows.values(): self._ui.list.add(row) @staticmethod def _get_qrcode(jid, sid, identity_key): fingerprint = get_fingerprint(identity_key) path = os.path.join(tempfile.gettempdir(), 'omemo_{}.png'.format(jid)) ver_string = 'xmpp:{}?omemo-sid-{}={}'.format(jid, sid, fingerprint) log.debug('Verification String: %s', ver_string) import qrcode qr = qrcode.QRCode(version=None, error_correction=2, box_size=4, border=1) qr.add_data(ver_string) qr.make(fit=True) qr.make() fill_color = 'black' back_color = 'transparent' if app.css_config.prefer_dark: back_color = 'white' if V(get_distribution('qrcode').version) < V('6.0'): # meaning of fill_color and back_color were switched # before this commit in qrcode between versions 5.3 # and 6.0: https://github.com/lincolnloop/python-qrcode/ # commit/01f440d64b7d1f61bb75161ce118b86eca85b15c back_color, fill_color = fill_color, back_color img = qr.make_image(fill_color=fill_color, back_color=back_color) img.save(path) return path def _load_qrcode(self): try: path = self._get_qrcode(self._own_jid, self._omemo.backend.own_device, self._identity_key) except ImportError: log.exception('Failed to generate QR code') self._ui.qrcode.hide() self._ui.qrinfo.show() else: pixbuf = GdkPixbuf.Pixbuf.new_from_file(path) self._ui.qrcode.set_from_pixbuf(pixbuf) self._ui.qrcode.show() self._ui.qrinfo.hide() def _on_show_inactive(self, switch, param): self._show_inactive = switch.get_active() self._ui.list.invalidate_filter() def _on_destroy(self, *args): del self._windows['dialog'] class KeyRow(Gtk.ListBoxRow): def __init__(self, jid, identity_key, trust, last_seen): Gtk.ListBoxRow.__init__(self) self.set_activatable(False) self._active = False self._device_id = None self._identity_key = identity_key self.trust = trust self.jid = jid grid = Gtk.Grid() grid.set_column_spacing(12) self._trust_button = TrustButton(self) grid.attach(self._trust_button, 1, 1, 1, 3) jid_label = Gtk.Label(label=jid) jid_label.get_style_context().add_class('dim-label') jid_label.set_selectable(False) jid_label.set_halign(Gtk.Align.START) jid_label.set_valign(Gtk.Align.START) jid_label.set_hexpand(True) grid.attach(jid_label, 2, 1, 1, 1) self.fingerprint = Gtk.Label( label=self._identity_key.get_fingerprint(formatted=True)) self.fingerprint.get_style_context().add_class('omemo-mono') self.fingerprint.get_style_context().add_class('omemo-inactive-color') self.fingerprint.set_selectable(True) self.fingerprint.set_halign(Gtk.Align.START) self.fingerprint.set_valign(Gtk.Align.START) self.fingerprint.set_hexpand(True) grid.attach(self.fingerprint, 2, 2, 1, 1) if last_seen is not None: last_seen = time.strftime('%d-%m-%Y %H:%M:%S', time.localtime(last_seen)) else: last_seen = _('Never') last_seen_label = Gtk.Label(label=_('Last seen: %s') % last_seen) last_seen_label.set_halign(Gtk.Align.START) last_seen_label.set_valign(Gtk.Align.START) last_seen_label.set_hexpand(True) last_seen_label.get_style_context().add_class('omemo-last-seen') last_seen_label.get_style_context().add_class('dim-label') grid.attach(last_seen_label, 2, 3, 1, 1) self.add(grid) self.show_all() def delete_fingerprint(self, *args): def _remove(): backend = self.get_toplevel()._omemo.backend backend.remove_device(self.jid, self.device_id) backend.storage.deleteSession(self.jid, self.device_id) backend.storage.deleteIdentity(self.jid, self._identity_key) self.get_parent().remove(self) self.destroy() ConfirmationDialog( _('Delete'), _('Delete Fingerprint'), _('Doing so will permanently delete this Fingerprint'), [DialogButton.make('Cancel'), DialogButton.make('Remove', text=_('Delete'), callback=_remove)], transient_for=self.get_toplevel()).show() def set_trust(self): icon_name, tooltip, css_class = TRUST_DATA[self.trust] image = self._trust_button.get_child() image.set_from_icon_name(icon_name, Gtk.IconSize.MENU) image.get_style_context().add_class(css_class) image.set_tooltip_text(tooltip) backend = self.get_toplevel()._omemo.backend backend.storage.setTrust(self.jid, self._identity_key, self.trust) @property def active(self): return self._active @active.setter def active(self, active): context = self.fingerprint.get_style_context() self._active = bool(active) if self._active: context.remove_class('omemo-inactive-color') else: context.add_class('omemo-inactive-color') self._trust_button.update() @property def device_id(self): return self._device_id @device_id.setter def device_id(self, device_id): self._device_id = device_id class TrustButton(Gtk.MenuButton): def __init__(self, row): Gtk.MenuButton.__init__(self) self._row = row self._css_class = '' self.set_popover(TrustPopver(row)) self.set_valign(Gtk.Align.CENTER) self.update() def update(self): icon_name, tooltip, css_class = TRUST_DATA[self._row.trust] image = self.get_child() image.set_from_icon_name(icon_name, Gtk.IconSize.MENU) # Remove old color from icon image.get_style_context().remove_class(self._css_class) if not self._row.active: css_class = 'omemo-inactive-color' tooltip = '%s - %s' % (_('Inactive'), tooltip) image.get_style_context().add_class(css_class) self._css_class = css_class self.set_tooltip_text(tooltip) class TrustPopver(Gtk.Popover): def __init__(self, row): Gtk.Popover.__init__(self) self._row = row self._listbox = Gtk.ListBox() self._listbox.set_selection_mode(Gtk.SelectionMode.NONE) self.update() self.add(self._listbox) self._listbox.show_all() self._listbox.connect('row-activated', self._activated) self.get_style_context().add_class('omemo-trust-popover') def _activated(self, _listbox, row): self.popdown() if row.type_ is None: self._row.delete_fingerprint() else: self._row.trust = row.type_ self._row.set_trust() self.get_relative_to().update() self.update() def update(self): self._listbox.foreach(self._listbox.remove) if self._row.trust != Trust.VERIFIED: self._listbox.add(VerifiedOption()) if self._row.trust != Trust.BLIND: self._listbox.add(BlindOption()) if self._row.trust != Trust.UNTRUSTED: self._listbox.add(NotTrustedOption()) self._listbox.add(DeleteOption()) class MenuOption(Gtk.ListBoxRow): def __init__(self): Gtk.ListBoxRow.__init__(self) box = Gtk.Box() box.set_spacing(6) image = Gtk.Image.new_from_icon_name(self.icon, Gtk.IconSize.MENU) label = Gtk.Label(label=self.label) image.get_style_context().add_class(self.color) box.add(image) box.add(label) self.add(box) self.show_all() class BlindOption(MenuOption): type_ = Trust.BLIND icon = 'security-medium-symbolic' label = _('Blind Trust') color = 'encrypted-color' def __init__(self): MenuOption.__init__(self) class VerifiedOption(MenuOption): type_ = Trust.VERIFIED icon = 'security-high-symbolic' label = _('Verified') color = 'encrypted-color' def __init__(self): MenuOption.__init__(self) class NotTrustedOption(MenuOption): type_ = Trust.UNTRUSTED icon = 'dialog-error-symbolic' label = _('Untrusted') color = 'error-color' def __init__(self): MenuOption.__init__(self) class DeleteOption(MenuOption): type_ = None icon = 'user-trash-symbolic' label = _('Delete') color = '' def __init__(self): MenuOption.__init__(self) omemo/gtk/config.ui0000644000175500017550000006422114155075457014337 0ustar debacledebacle True True True False 18 vertical 6 True False start 6 12 True False end Acc_ount True account_combobox 0 0 200 True False True start account_store 0 1 0 True False end 6 Own _Fingerprint True fingerprint_label 0 1 200 30 True False start 6 True True 1 1 True False end Own _Device ID True ID 0 2 200 30 True False start True 0 1 2 True False start Note: Fingerprints of your contacts are managed in the message window. True 50 0 1 3 True False end gtk-missing-image 0 3 False True 0 True False Own Fingerprints False True False 18 vertical 6 25 True False center Published Devices False True 0 True True center never 300 True False deviceid_store 0 horizontal Device ID True 0 True True 1 True False center 6 12 _Clear Devices True False True True This clears your device list from the server. Clearing the device list helps you to remove unused devices from the encryption process. It is advised to go online with all of your actively used devices after clearing. True False False 0 gtk-refresh 160 True False True True True False False 1 False True 2 1 True False Clear Devices 1 False True False 18 vertical 6 True False warning False 6 end False False 0 False 30 True False You have to restart Gajim for changes to take effect ! False True 0 False False 0 False True 0 True False 6 12 True 200 True True out True True True account_store horizontal Active Accounts 0.5 0 0 0 True True out True True True disabled_account_store horizontal Disabled Accounts 0.5 0 1 0 _Disable Account True True True center True 0 1 _Enable Account True True True center True 1 1 False True 1 2 True False Disable Accounts 2 False True False 18 18 18 18 True False 0 none True False 12 12 True False Blind Trust Before Verification True True False True 0 0 True False General 0 0 3 True False Settings 3 False omemo/COPYING0000644000175500017550000010451314155075457013000 0ustar debacledebacle GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007 Copyright (C) 2007 Free Software Foundation, Inc. Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The GNU General Public License is a free, copyleft license for software and other kinds of works. 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Copyright (C) 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 . Also add information on how to contact you by electronic and paper mail. If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode: Copyright (C) This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an "about box". You should also get your employer (if you work as a programmer) or school, if any, to sign a "copyright disclaimer" for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see . The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read . omemo/manifest.ini0000644000175500017550000000105314155075457014247 0ustar debacledebacle[info] name: OMEMO short_name: omemo version: 2.7.15 description: OMEMO is an XMPP Extension Protocol (XEP) for secure multi-client end-to-end encryption based on Axolotl and PEP. You need to install some dependencies, detailed in the installation instructions for your system in the GitLab wiki. authors: Bahtiar `kalkin-` Gadimov Daniel Gultsch Philipp Hörist homepage: https://dev.gajim.org/gajim/gajim-plugins/wikis/OmemoGajimPlugin min_gajim_version: 1.2.91 max_gajim_version: 1.3.90 omemo/__init__.py0000644000175500017550000000004514155075457014051 0ustar debacledebaclefrom omemo.plugin import OmemoPlugin omemo/file_crypto.py0000644000175500017550000002000214155075457014624 0ustar debacledebacle# Copyright (C) 2019 Philipp Hörist # # This file is part of OMEMO Gajim Plugin. # # OMEMO Gajim Plugin 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. # # OMEMO Gajim Plugin 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 OMEMO Gajim Plugin. If not, see . import hashlib import logging import binascii from pathlib import Path from urllib.parse import urlparse from urllib.parse import unquote from gi.repository import GLib from gi.repository import Soup from gajim.common import configpaths from gajim.common.helpers import write_file_async from gajim.common.helpers import open_file from gajim.common.const import URIType from gajim.common.const import FTState from gajim.common.filetransfer import FileTransfer from gajim.plugins.plugins_i18n import _ from gajim.gui.dialogs import DialogButton from gajim.gui.dialogs import ConfirmationDialog from gajim.gui.filetransfer_progress import FileTransferProgress from omemo.backend.aes import aes_decrypt_file log = logging.getLogger('gajim.p.omemo.filedecryption') DIRECTORY = Path(configpaths.get('MY_DATA')) / 'downloads' class FileDecryption: def __init__(self, plugin): self.plugin = plugin self.window = None self._session = Soup.Session() def hyperlink_handler(self, uri, instance, window): if uri.type != URIType.WEB: return self.window = window urlparts = urlparse(uri.data) if urlparts.scheme != 'aesgcm': log.info('URL not encrypted: %s', uri.data) return try: key, iv = self._parse_fragment(urlparts.fragment) except ValueError: log.info('URL not encrypted: %s', uri.data) return file_path = self._get_file_path(uri.data, urlparts) if file_path.exists(): instance.plugin_modified = True self._show_file_open_dialog(file_path) return file_path.parent.mkdir(mode=0o700, exist_ok=True) transfer = OMEMODownload(instance.account, urlparts, file_path, key, iv) transfer.connect('cancel', self._cancel_download) FileTransferProgress(transfer) self._download_content(transfer) instance.plugin_modified = True def _download_content(self, transfer): log.info('Start downloading: %s', transfer.request_uri) transfer.set_started() message = transfer.get_soup_message() message.connect('got-headers', self._on_got_headers, transfer) message.connect('got-chunk', self._on_got_chunk, transfer) self._session.queue_message(message, self._on_finished, transfer) def _cancel_download(self, transfer, _signalname): message = transfer.get_soup_message() self._session.cancel_message(message, Soup.Status.CANCELLED) transfer.set_cancelled() @staticmethod def _on_got_headers(message, transfer): transfer.set_in_progress() size = message.props.response_headers.get_content_length() transfer.size = size def _on_got_chunk(self, message, chunk, transfer): transfer.set_chunk(chunk.get_data()) if transfer.size: # This gets called even when the requested file is not found # So only update the progress if the file was actually found and # we know the size transfer.update_progress() self._session.pause_message(message) GLib.idle_add(self._session.unpause_message, message) def _on_finished(self, _session, message, transfer): if message.props.status_code == Soup.Status.CANCELLED: log.info('Download cancelled') return if message.status_code != Soup.Status.OK: log.warning('Download failed: %s', transfer.request_uri) log.warning(Soup.Status.get_phrase(message.status_code)) error_text = _('Download failed: %s') % transfer.request_uri transfer.set_error('http-error', error_text) return data = message.props.response_body_data.get_data() if data is None: return decrypted_data = aes_decrypt_file(transfer.key, transfer.iv, data) write_file_async(transfer.path, decrypted_data, self._on_decrypted, transfer) transfer.set_decrypting() def _on_decrypted(self, _result, error, transfer): if error is not None: log.error('%s: %s', transfer.path, error) return transfer.set_finished() self._show_file_open_dialog(transfer.path) def _show_file_open_dialog(self, file_path): def _open_file(): open_file(file_path) def _open_folder(): open_file(file_path.parent) ConfirmationDialog( _('Open File'), _('Open File?'), _('Do you want to open %s?') % file_path.name, [DialogButton.make('Cancel', text=_('_No')), DialogButton.make('OK', text=_('Open _Folder'), callback=_open_folder), DialogButton.make('Accept', text=_('_Open'), callback=_open_file)], transient_for=self.window).show() @staticmethod def _parse_fragment(fragment): if not fragment: raise ValueError('Invalid fragment') fragment = binascii.unhexlify(fragment) size = len(fragment) # Clients started out with using a 16 byte IV but long term # want to swtich to the more performant 12 byte IV # We have to support both if size == 48: key = fragment[16:] iv = fragment[:16] elif size == 44: key = fragment[12:] iv = fragment[:12] else: raise ValueError('Invalid fragment size: %s' % size) return key, iv @staticmethod def _get_file_path(uri, urlparts): path = Path(unquote(urlparts.path)) stem = path.stem extension = path.suffix if len(stem) > 90: # Many Filesystems have a limit on filename length # Most have 255, some encrypted ones only 143 # We add around 50 chars for the hash, # so the filename should not exceed 90 stem = stem[:90] name_hash = hashlib.sha1(str(uri).encode()).hexdigest() hash_filename = '%s_%s%s' % (stem, name_hash, extension) file_path = DIRECTORY / hash_filename return file_path class OMEMODownload(FileTransfer): _state_descriptions = { FTState.DECRYPTING: _('Decrypting file…'), FTState.STARTED: _('Downloading…'), } def __init__(self, account, urlparts, path, key, iv): FileTransfer.__init__(self, account) self._urlparts = urlparts self.path = path self.iv = iv self.key = key self._message = None @property def request_uri(self): urlparts = self._urlparts._replace(scheme='https', fragment='') return urlparts.geturl() @property def filename(self): return Path(self._urlparts.path).name def set_chunk(self, bytes_): self._seen += len(bytes_) def get_soup_message(self): if self._message is None: self._message = Soup.Message.new('GET', self.request_uri) return self._message omemo/omemo.png0000644000175500017550000000470414155075457013570 0ustar debacledebaclePNG  IHDR00W IDATxXx&hm۶m6m۶m;k{خׯ*Tt0 0a0: CO,Lɬx7دX< lfƏB,)",'̥ѧt(lUK7tF|nۀVV&6VoƍJj]+0b^wc;R'3J-%54ʕ+ީ ߈@O0d6 ]>݋}zm,R||&"O2&|%N/]AZ e{(oܬEy{{;yr/Ω38۾bb .Ჰk۸aLW/KaOB4йizrߦeq Cy>?C< u'k9^ \JnӋϟ>fbDFμ0̑W5dL,Nq@P1f.ܽv.BxŰ(hPO˹G#aSOQxbJ5.̄5S`'c%QFR5iΌUyTEz[V7p2'N=d>4<;@q%KqjSpB"d͖=Slzl˹^[VGpL8YlT~ MZNl Nh ϝ?}R#CLy>~wu*Z{C:=1YqȀ YҥK4hPNT5GZ(T!` \'#R>'/RK=o;"فƸVΥ%On/Cx $Y2> 𕓉Mspwp@j۶oxȑW\ٶm{M|"FAo VͭD -BM | 逴;O_9eⷧuP#%yt>/ΝJ/Vz{.ƔbQ sne\7xb,qȤܲxcd6Ww=5g2Deސ Ô Hc~ ϛV&suۣ:2F(* ݜ *6c1[ [ҽGίC뻨7Iߥj_st6€1@ >_NcK={b{ .6|Y`uyp‰|lvYdOOpd0 '{]:Fɸϝ@^mX>??8FGj!V+GOAU0cDo H3p Ep{$7f:]>zG </]} eSs˶ehh(]R4*4AvR7JÝ=AiĴBx$iwp|_x}^Mn߰B Z~Tew{i*Y=kkkq͛9{΅.uFQ!jI)'#*sCl_\ٹkFi˦,\<3`6p4ֹi(S/7;x?Ԑ]00ƵD\3*'5E䤾'Qv ؛7u(3v3Ke >(w[«'vqטRYLEtҋfOߔ<|`CB8ݲGQB,5:ǽ0"I p=M(L󚺼% vvnM$ ;S I-WC'OR;]Qx`j- ?[E p|cH\6o-Z 4åvuJhبIK!PNosuT;nPiWL) as9Za+nO*Sli-L@'g|4cVHң?5x"na VN.:k GHf.-H9ZG-!dPB>u$a%)]!MY]22^J+;X5vJ}Wx?b˒55( # # This file is part of OMEMO Gajim Plugin. # # OMEMO Gajim Plugin 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. # # OMEMO Gajim Plugin 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 OMEMO Gajim Plugin. If not, see . # XEP-0384: OMEMO Encryption import time from pathlib import Path from nbxmpp.namespaces import Namespace from nbxmpp.protocol import NodeProcessed from nbxmpp.protocol import JID from nbxmpp.errors import StanzaError from nbxmpp.const import PresenceType from nbxmpp.const import Affiliation from nbxmpp.structs import StanzaHandler from nbxmpp.modules.omemo import create_omemo_message from nbxmpp.modules.omemo import get_key_transport_message from nbxmpp.modules.util import is_error from gajim.common import app from gajim.common import configpaths from gajim.common.nec import NetworkEvent from gajim.common.const import EncryptionData from gajim.common.const import Trust as GajimTrust from gajim.common.modules.base import BaseModule from gajim.common.modules.util import event_node from gajim.common.modules.util import as_task from gajim.plugins.plugins_i18n import _ from omemo.backend.state import OmemoState from omemo.backend.state import KeyExchangeMessage from omemo.backend.state import SelfMessage from omemo.backend.state import MessageNotForDevice from omemo.backend.state import DecryptionFailed from omemo.backend.state import DuplicateMessage from omemo.backend.util import Trust from omemo.modules.util import prepare_stanza ALLOWED_TAGS = [ ('request', Namespace.RECEIPTS), ('active', Namespace.CHATSTATES), ('gone', Namespace.CHATSTATES), ('inactive', Namespace.CHATSTATES), ('paused', Namespace.CHATSTATES), ('composing', Namespace.CHATSTATES), ('markable', Namespace.CHATMARKERS), ('no-store', Namespace.HINTS), ('store', Namespace.HINTS), ('no-copy', Namespace.HINTS), ('no-permanent-store', Namespace.HINTS), ('replace', Namespace.CORRECT), ('thread', None), ('origin-id', Namespace.SID), ] ENCRYPTION_NAME = 'OMEMO' # Module name name = 'OMEMO' zeroconf = False class OMEMO(BaseModule): _nbxmpp_extends = 'OMEMO' _nbxmpp_methods = [ 'set_devicelist', 'request_devicelist', 'set_bundle', 'request_bundle', ] def __init__(self, con): BaseModule.__init__(self, con, plugin=True) self.handlers = [ StanzaHandler(name='message', callback=self._message_received, ns=Namespace.OMEMO_TEMP, priority=9), StanzaHandler(name='presence', callback=self._on_muc_user_presence, ns=Namespace.MUC_USER, priority=48), ] self._register_pubsub_handler(self._devicelist_notification_received) self.available = True self._own_jid = self._con.get_own_jid().getStripped() self._backend = self._get_backend() self._omemo_groupchats = set() self._muc_temp_store = {} self._query_for_bundles = [] self._device_bundle_querys = [] self._query_for_devicelists = [] def get_own_jid(self, stripped=False): if stripped: return self._con.get_own_jid().getStripped() return self._con.get_own_jid() @property def backend(self): return self._backend def _get_backend(self): data_dir = Path(configpaths.get('MY_DATA')) db_path = data_dir / f'omemo_{self._own_jid}.db' return OmemoState(self._own_jid, db_path, self._account, self) def is_omemo_groupchat(self, room_jid): return room_jid in self._omemo_groupchats def on_signed_in(self): self._log.info('Announce Support after Sign In') self._query_for_bundles = [] self.set_bundle() self.request_devicelist() def activate(self): """ Method called when the Plugin is activated in the PluginManager """ self._con.get_module('Caps').update_caps() if app.account_is_connected(self._account): self._log.info('Announce Support after Plugin Activation') self._query_for_bundles = [] self.set_bundle() self.request_devicelist() def deactivate(self): """ Method called when the Plugin is deactivated in the PluginManager """ self._query_for_bundles = [] def encrypt_message(self, conn, event, callback, groupchat): if not event.message: callback(event) return to_jid = app.get_jid_without_resource(event.jid) omemo_message = self.backend.encrypt(to_jid, event.message) if omemo_message is None: session = event.session if hasattr(event, 'session') else None app.nec.push_incoming_event( NetworkEvent('message-not-sent', conn=conn, jid=event.jid, message=event.message, error=_('Encryption error'), time_=time.time(), session=session)) return create_omemo_message(event.stanza, omemo_message, node_whitelist=ALLOWED_TAGS) if groupchat: self._muc_temp_store[omemo_message.payload] = event.message else: event.xhtml = None event.encrypted = ENCRYPTION_NAME event.additional_data['encrypted'] = { 'name': ENCRYPTION_NAME, 'trust': GajimTrust[Trust.VERIFIED.name]} self._debug_print_stanza(event.stanza) callback(event) def _send_key_transport_message(self, typ, jid, devices): omemo_message = self.backend.encrypt_key_transport(jid, devices) if omemo_message is None: self._log.warning('Key transport message to %s (%s) failed', jid, devices) return transport_message = get_key_transport_message(typ, jid, omemo_message) self._log.info('Send key transport message %s (%s)', jid, devices) self._con.connection.send(transport_message) def _message_received(self, _con, stanza, properties): if not properties.is_omemo: return if properties.is_carbon_message and properties.carbon.is_sent: from_jid = self._own_jid elif properties.is_mam_message: from_jid = self._process_mam_message(properties) elif properties.from_muc: from_jid = self._process_muc_message(properties) else: from_jid = properties.jid.getBare() if from_jid is None: return self._log.info('Message received from: %s', from_jid) try: plaintext, fingerprint, trust = self.backend.decrypt_message( properties.omemo, from_jid) except (KeyExchangeMessage, DuplicateMessage): raise NodeProcessed except SelfMessage: if not properties.from_muc: raise NodeProcessed if properties.omemo.payload not in self._muc_temp_store: self._log.warning("Can't decrypt own GroupChat Message") return plaintext = self._muc_temp_store[properties.omemo.payload] fingerprint = self.backend.own_fingerprint trust = Trust.VERIFIED del self._muc_temp_store[properties.omemo.payload] except DecryptionFailed: return except MessageNotForDevice: if properties.omemo.payload is None: # Key Transport message for another device return plaintext = _('This message was encrypted with OMEMO, ' 'but not for your device.') # Neither trust nor fingerprint can be verified if we didn't # successfully decrypt the message trust = Trust.UNTRUSTED fingerprint = None prepare_stanza(stanza, plaintext) self._debug_print_stanza(stanza) properties.encrypted = EncryptionData({'name': ENCRYPTION_NAME, 'fingerprint': fingerprint, 'trust': GajimTrust[trust.name]}) def _process_muc_message(self, properties): room_jid = properties.jid.getBare() resource = properties.jid.getResource() if properties.muc_ofrom is not None: # History Message from MUC return properties.muc_ofrom.getBare() contact = app.contacts.get_gc_contact(self._account, room_jid, resource) if contact is not None: return JID(contact.jid).getBare() self._log.info('Groupchat: Last resort trying to find SID in DB') from_jid = self.backend.storage.getJidFromDevice(properties.omemo.sid) if not from_jid: self._log.error("Can't decrypt GroupChat Message from %s", resource) return return from_jid def _process_mam_message(self, properties): self._log.info('Message received, archive: %s', properties.mam.archive) if properties.from_muc: self._log.info('MUC MAM Message received') if properties.muc_user is None or properties.muc_user.jid is None: self._log.warning('Received MAM Message which can ' 'not be mapped to a real jid') return return properties.muc_user.jid.getBare() return properties.from_.getBare() def _on_muc_user_presence(self, _con, _stanza, properties): if properties.type == PresenceType.ERROR: return if properties.is_muc_destroyed: return room = properties.jid.getBare() if properties.muc_user is None or properties.muc_user.jid is None: # No real jid found return jid = properties.muc_user.jid.getBare() if properties.muc_user.affiliation in (Affiliation.OUTCAST, Affiliation.NONE): self.backend.remove_muc_member(room, jid) else: self.backend.add_muc_member(room, jid) if self.is_omemo_groupchat(room): if not self.is_contact_in_roster(jid): # Query Devicelists from JIDs not in our Roster self._log.info('%s not in Roster, query devicelist...', jid) self.request_devicelist(jid) def get_affiliation_list(self, room_jid): for affiliation in ('owner', 'admin', 'member'): self._nbxmpp('MUC').get_affiliation( room_jid, affiliation, callback=self._on_affiliations_received, user_data=room_jid) def _on_affiliations_received(self, task): room_jid = task.get_user_data() try: result = task.finish() except StanzaError as error: self._log.info('Affiliation request failed: %s', error) return for user_jid in result.users: jid = str(user_jid) self.backend.add_muc_member(room_jid, jid) if not self.is_contact_in_roster(jid): # Query Devicelists from JIDs not in our Roster self._log.info('%s not in Roster, query devicelist...', jid) self.request_devicelist(jid) def is_contact_in_roster(self, jid): if jid == self._own_jid: return True contact = app.contacts.get_first_contact_from_jid(self._account, jid) if contact is None: return False return contact.sub == 'both' def on_muc_disco_update(self, event): self._check_if_omemo_capable(event.room_jid) def on_muc_joined(self, event): self._check_if_omemo_capable(event.room_jid) if self.is_omemo_groupchat(event.room_jid): self.get_affiliation_list(event.room_jid) def _check_if_omemo_capable(self, jid): disco_info = app.storage.cache.get_last_disco_info(jid) if disco_info.muc_is_members_only and disco_info.muc_is_nonanonymous: self._log.info('OMEMO room discovered: %s', jid) self._omemo_groupchats.add(jid) else: self._log.info('OMEMO room removed due to config change: %s', jid) self._omemo_groupchats.discard(jid) def _check_for_missing_sessions(self, jid): devices_without_session = self.backend.devices_without_sessions(jid) for device_id in devices_without_session: if device_id in self._device_bundle_querys: continue self._device_bundle_querys.append(device_id) self.request_bundle(jid, device_id) def are_keys_missing(self, contact_jid): """ Checks if devicekeys are missing and queries the bundles Parameters ---------- contact_jid : str bare jid of the contact Returns ------- bool Returns True if there are no trusted Fingerprints """ # Fetch Bundles of own other Devices if self._own_jid not in self._query_for_bundles: devices_without_session = self.backend \ .devices_without_sessions(self._own_jid) self._query_for_bundles.append(self._own_jid) if devices_without_session: for device_id in devices_without_session: self.request_bundle(self._own_jid, device_id) # Fetch Bundles of contacts devices if contact_jid not in self._query_for_bundles: devices_without_session = self.backend \ .devices_without_sessions(contact_jid) self._query_for_bundles.append(contact_jid) if devices_without_session: for device_id in devices_without_session: self.request_bundle(contact_jid, device_id) if self.backend.has_trusted_keys(contact_jid): return False return True def set_bundle(self): self._nbxmpp('OMEMO').set_bundle(self.backend.bundle, self.backend.own_device) @as_task def request_bundle(self, jid, device_id): _task = yield self._log.info('Fetch device bundle %s %s', device_id, jid) bundle = yield self._nbxmpp('OMEMO').request_bundle( jid, device_id) if is_error(bundle) or bundle is None: self._log.info('Bundle request failed: %s %s: %s', jid, device_id, bundle) return self.backend.build_session(jid, device_id, bundle) self._log.info('Session created for: %s', jid) # TODO: In MUC we should send a groupchat message self._send_key_transport_message('chat', jid, [device_id]) # Trigger dialog to trust new Fingerprints if # the Chat Window is Open ctrl = app.interface.msg_win_mgr.get_control( jid, self._account) if ctrl: app.nec.push_incoming_event( NetworkEvent('omemo-new-fingerprint', chat_control=ctrl)) def set_devicelist(self, devicelist=None): devicelist_ = set([self.backend.own_device]) if devicelist is not None: devicelist_.update(devicelist) self._log.info('Publishing own devicelist: %s', devicelist_) self._nbxmpp('OMEMO').set_devicelist(devicelist_) def clear_devicelist(self): self.backend.update_devicelist(self._own_jid, [self.backend.own_device]) self.set_devicelist() @as_task def request_devicelist(self, jid=None): _task = yield if jid is None: jid = self._own_jid if jid in self._query_for_devicelists: return self._query_for_devicelists.append(jid) devicelist = yield self._nbxmpp('OMEMO').request_devicelist(jid=jid) if is_error(devicelist) or devicelist is None: self._log.info('Devicelist request failed: %s %s', jid, devicelist) devicelist = [] self._process_devicelist_update(jid, devicelist) @event_node(Namespace.OMEMO_TEMP_DL) def _devicelist_notification_received(self, _con, _stanza, properties): if properties.pubsub_event.retracted: return devicelist = properties.pubsub_event.data or [] self._process_devicelist_update(str(properties.jid), devicelist) def _process_devicelist_update(self, jid, devicelist): own_devices = jid is None or self._con.get_own_jid().bareMatch(jid) if own_devices: jid = self._own_jid self._log.info('Received device list for %s: %s', jid, devicelist) # Pass a copy, we need the full list for potential set_devicelist() self.backend.update_devicelist(jid, list(devicelist)) if jid in self._query_for_bundles: self._query_for_bundles.remove(jid) if own_devices: if not self.backend.is_own_device_published: # Our own device_id is not in the list, it could be # overwritten by some other client self.set_devicelist(devicelist) self._check_for_missing_sessions(jid) def _debug_print_stanza(self, stanza): stanzastr = '\n' + stanza.__str__(fancy=True) stanzastr = stanzastr[0:-1] self._log.debug(stanzastr) def get_instance(*args, **kwargs): return OMEMO(*args, **kwargs), 'OMEMO' omemo/modules/util.py0000644000175500017550000000205014155075457014735 0ustar debacledebacle# Copyright (C) 2019 Philipp Hörist # # This file is part of OMEMO Gajim Plugin. # # OMEMO Gajim Plugin 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. # # OMEMO Gajim Plugin 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 OMEMO Gajim Plugin. If not, see . from nbxmpp.namespaces import Namespace def prepare_stanza(stanza, plaintext): delete_nodes(stanza, 'encrypted', Namespace.OMEMO_TEMP) delete_nodes(stanza, 'body') stanza.setBody(plaintext) def delete_nodes(stanza, name, namespace=None): nodes = stanza.getTags(name, namespace=namespace) for node in nodes: stanza.delChild(node) omemo/modules/__init__.py0000644000175500017550000000000014155075457015510 0ustar debacledebacleomemo/omemo16x16.png0000644000175500017550000000126014155075457014270 0ustar debacledebaclePNG  IHDRawIDATxKzFm۶m۶m۶mNζ9[ffcoɾ.VV/$h >+eeyTerVgqe:!k˻;m/n&M'=(1kr opK]㏬p7pxW"kdx`n1sIH\+Ƚ9ۉeQx.W&#/!';rc5%)U2#LUqHz7i(ŗ~IENDB`omemo/backend/0000755000175500017550000000000014155075457013330 5ustar debacledebacleomemo/backend/util.py0000644000175500017550000000335714155075457014667 0ustar debacledebacle# Copyright (C) 2015 Bahtiar `kalkin-` Gadimov # # This file is part of OMEMO Gajim Plugin. # # OMEMO Gajim Plugin 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. # # OMEMO Gajim Plugin 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 OMEMO Gajim Plugin. If not, see . import binascii import textwrap from logging import LoggerAdapter from enum import IntEnum from axolotl.identitykey import IdentityKey DEFAULT_PREKEY_AMOUNT = 100 MIN_PREKEY_AMOUNT = 80 SPK_ARCHIVE_TIME = 86400 * 15 # 15 Days SPK_CYCLE_TIME = 86400 # 24 Hours UNACKNOWLEDGED_COUNT = 300 class Trust(IntEnum): UNTRUSTED = 0 VERIFIED = 1 UNDECIDED = 2 BLIND = 3 def get_fingerprint(identity_key, formatted=False): public_key = identity_key.getPublicKey().serialize() fingerprint = binascii.hexlify(public_key).decode()[2:] if not formatted: return fingerprint fplen = len(fingerprint) wordsize = fplen // 8 buf = '' for w in range(0, fplen, wordsize): buf += '{0} '.format(fingerprint[w:w + wordsize]) buf = textwrap.fill(buf, width=36) return buf.rstrip().upper() class IdentityKeyExtended(IdentityKey): def __hash__(self): return hash(self.publicKey.serialize()) def get_fingerprint(self, formatted=False): return get_fingerprint(self, formatted=formatted) omemo/backend/devices.py0000644000175500017550000001147214155075457015331 0ustar debacledebacle# Copyright (C) 2019 Philipp Hörist # # This file is part of OMEMO Gajim Plugin. # # OMEMO Gajim Plugin 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. # # OMEMO Gajim Plugin 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 OMEMO Gajim Plugin. If not, see . from collections import defaultdict from gajim.common import app from omemo.backend.util import UNACKNOWLEDGED_COUNT class DeviceManager: def __init__(self): self.__device_store = defaultdict(set) self.__muc_member_store = defaultdict(set) reg_id = self._storage.getLocalRegistrationId() if reg_id is None: raise ValueError('No own device found') self.__own_device = reg_id self.add_device(self._own_jid, self.__own_device) self._log.info('Our device id: %s', self.__own_device) for jid, device in self._storage.getActiveDeviceTuples(): self._log.info('Load device from storage: %s - %s', jid, device) self.add_device(jid, device) def update_devicelist(self, jid, devicelist): for device in list(devicelist): if device == self.own_device: continue count = self._storage.getUnacknowledgedCount(jid, device) if count > UNACKNOWLEDGED_COUNT: self._log.warning('Ignore device because of %s unacknowledged' ' messages: %s %s', count, jid, device) devicelist.remove(device) self.__device_store[jid] = set(devicelist) self._log.info('Saved devices for %s', jid) self._storage.setActiveState(jid, devicelist) def add_muc_member(self, room_jid, jid): self._log.info('Saved MUC member %s %s', room_jid, jid) self.__muc_member_store[room_jid].add(jid) def remove_muc_member(self, room_jid, jid): self._log.info('Removed MUC member %s %s', room_jid, jid) self.__muc_member_store[room_jid].discard(jid) def get_muc_members(self, room_jid, without_self=True): members = set(self.__muc_member_store[room_jid]) if without_self: members.discard(self._own_jid) return members def add_device(self, jid, device): self.__device_store[jid].add(device) def remove_device(self, jid, device): self.__device_store[jid].discard(device) self._storage.setInactive(jid, device) def get_devices(self, jid, without_self=False): devices = set(self.__device_store[jid]) if without_self: devices.discard(self.own_device) return devices def get_devices_for_encryption(self, jid): devices_for_encryption = [] if app.contacts.get_groupchat_contact(self._account, jid) is not None: devices_for_encryption = self._get_devices_for_muc_encryption(jid) else: devices_for_encryption = self._get_devices_for_encryption(jid) if not devices_for_encryption: raise NoDevicesFound devices_for_encryption += self._get_own_devices_for_encryption() return set(devices_for_encryption) def _get_devices_for_muc_encryption(self, jid): devices_for_encryption = [] for jid_ in self.__muc_member_store[jid]: devices_for_encryption += self._get_devices_for_encryption(jid_) return devices_for_encryption def _get_own_devices_for_encryption(self): devices_for_encryption = [] own_devices = self.get_devices(self._own_jid, without_self=True) for device in own_devices: if self._storage.isTrusted(self._own_jid, device): devices_for_encryption.append((self._own_jid, device)) return devices_for_encryption def _get_devices_for_encryption(self, jid): devices_for_encryption = [] devices = self.get_devices(jid) for device in devices: if self._storage.isTrusted(jid, device): devices_for_encryption.append((jid, device)) return devices_for_encryption @property def own_device(self): return self.__own_device @property def devices_for_publish(self): devices = self.get_devices(self._own_jid) if self.own_device not in devices: devices.add(self.own_device) return devices @property def is_own_device_published(self): return self.own_device in self.get_devices(self._own_jid) class NoDevicesFound(Exception): pass omemo/backend/__init__.py0000644000175500017550000000002614155075457015437 0ustar debacledebacle__version__ = "0.1.0" omemo/backend/aes.py0000644000175500017550000000514714155075457014461 0ustar debacledebacle# Copyright (C) 2019 Philipp Hörist # # This file is part of OMEMO Gajim Plugin. # # OMEMO Gajim Plugin 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. # # OMEMO Gajim Plugin 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 OMEMO Gajim Plugin. If not, see . import os import logging from collections import namedtuple from cryptography.hazmat.primitives.ciphers import Cipher from cryptography.hazmat.primitives.ciphers import algorithms from cryptography.hazmat.primitives.ciphers.modes import GCM from cryptography.hazmat.backends import default_backend log = logging.getLogger('gajim.p.omemo') EncryptionResult = namedtuple('EncryptionResult', 'payload key iv') IV_SIZE = 12 def _decrypt(key, iv, tag, data): decryptor = Cipher( algorithms.AES(key), GCM(iv, tag=tag), backend=default_backend()).decryptor() return decryptor.update(data) + decryptor.finalize() def aes_decrypt(_key, iv, payload): if len(_key) >= 32: # XEP-0384 log.debug('XEP Compliant Key/Tag') data = payload key = _key[:16] tag = _key[16:] else: # Legacy log.debug('Legacy Key/Tag') data = payload[:-16] key = _key tag = payload[-16:] return _decrypt(key, iv, tag, data).decode() def aes_decrypt_file(key, iv, payload): data = payload[:-16] tag = payload[-16:] return _decrypt(key, iv, tag, data) def _encrypt(data, key_size, iv_size=IV_SIZE): if isinstance(data, str): data = data.encode() key = os.urandom(key_size) iv = os.urandom(iv_size) encryptor = Cipher( algorithms.AES(key), GCM(iv), backend=default_backend()).encryptor() payload = encryptor.update(data) + encryptor.finalize() return key, iv, encryptor.tag, payload def aes_encrypt(plaintext): key, iv, tag, payload = _encrypt(plaintext, 16) key += tag return EncryptionResult(payload=payload, key=key, iv=iv) def aes_encrypt_file(data): key, iv, tag, payload, = _encrypt(data, 32) payload += tag return EncryptionResult(payload=payload, key=key, iv=iv) def get_new_key(): return os.urandom(16) def get_new_iv(): return os.urandom(IV_SIZE) omemo/backend/state.py0000644000175500017550000003205014155075457015022 0ustar debacledebacle# Copyright (C) 2019 Philipp Hörist # Copyright (C) 2015 Bahtiar `kalkin-` Gadimov # # This file is part of OMEMO Gajim Plugin. # # OMEMO Gajim Plugin 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. # # OMEMO Gajim Plugin 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 OMEMO Gajim Plugin. If not, see . import time from collections import defaultdict from nbxmpp.structs import OMEMOBundle from nbxmpp.structs import OMEMOMessage from axolotl.ecc.djbec import DjbECPublicKey from axolotl.identitykey import IdentityKey from axolotl.protocol.prekeywhispermessage import PreKeyWhisperMessage from axolotl.protocol.whispermessage import WhisperMessage from axolotl.sessionbuilder import SessionBuilder from axolotl.sessioncipher import SessionCipher from axolotl.state.prekeybundle import PreKeyBundle from axolotl.util.keyhelper import KeyHelper from axolotl.duplicatemessagexception import DuplicateMessageException from omemo.backend.aes import aes_decrypt from omemo.backend.aes import aes_encrypt from omemo.backend.aes import get_new_key from omemo.backend.aes import get_new_iv from omemo.backend.devices import DeviceManager from omemo.backend.devices import NoDevicesFound from omemo.backend.liteaxolotlstore import LiteAxolotlStore from omemo.backend.util import get_fingerprint from omemo.backend.util import Trust from omemo.backend.util import DEFAULT_PREKEY_AMOUNT from omemo.backend.util import MIN_PREKEY_AMOUNT from omemo.backend.util import SPK_CYCLE_TIME from omemo.backend.util import SPK_ARCHIVE_TIME from omemo.backend.util import UNACKNOWLEDGED_COUNT class OmemoState(DeviceManager): def __init__(self, own_jid, db_path, account, xmpp_con): self._account = account self._own_jid = own_jid self._log = xmpp_con._log self._session_ciphers = defaultdict(dict) self._storage = LiteAxolotlStore(db_path, self._log) DeviceManager.__init__(self) self.xmpp_con = xmpp_con self._log.info('%s PreKeys available', self._storage.getPreKeyCount()) def build_session(self, jid, device_id, bundle): session = SessionBuilder(self._storage, self._storage, self._storage, self._storage, jid, device_id) registration_id = self._storage.getLocalRegistrationId() prekey = bundle.pick_prekey() otpk = DjbECPublicKey(prekey['key'][1:]) spk = DjbECPublicKey(bundle.spk['key'][1:]) ik = IdentityKey(DjbECPublicKey(bundle.ik[1:])) prekey_bundle = PreKeyBundle(registration_id, device_id, prekey['id'], otpk, bundle.spk['id'], spk, bundle.spk_signature, ik) session.processPreKeyBundle(prekey_bundle) self._get_session_cipher(jid, device_id) @property def storage(self): return self._storage @property def own_fingerprint(self): return get_fingerprint(self._storage.getIdentityKeyPair()) @property def bundle(self): self._check_pre_key_count() bundle = {'otpks': []} for k in self._storage.loadPendingPreKeys(): key = k.getKeyPair().getPublicKey().serialize() bundle['otpks'].append({'key': key, 'id': k.getId()}) ik_pair = self._storage.getIdentityKeyPair() bundle['ik'] = ik_pair.getPublicKey().serialize() self._cycle_signed_pre_key(ik_pair) spk = self._storage.loadSignedPreKey( self._storage.getCurrentSignedPreKeyId()) bundle['spk_signature'] = spk.getSignature() bundle['spk'] = {'key': spk.getKeyPair().getPublicKey().serialize(), 'id': spk.getId()} return OMEMOBundle(**bundle) def decrypt_message(self, omemo_message, jid): if omemo_message.sid == self.own_device: self._log.info('Received previously sent message by us') raise SelfMessage try: encrypted_key, prekey = omemo_message.keys[self.own_device] except KeyError: self._log.info('Received message not for our device') raise MessageNotForDevice try: if prekey: key, fingerprint, trust = self._process_pre_key_message( jid, omemo_message.sid, encrypted_key) else: key, fingerprint, trust = self._process_message( jid, omemo_message.sid, encrypted_key) except DuplicateMessageException: self._log.info('Received duplicated message') raise DuplicateMessage except Exception as error: self._log.warning(error) raise DecryptionFailed if omemo_message.payload is None: self._log.debug("Decrypted Key Exchange Message") raise KeyExchangeMessage try: result = aes_decrypt(key, omemo_message.iv, omemo_message.payload) except Exception as error: self._log.warning(error) raise DecryptionFailed self._log.debug("Decrypted Message => %s", result) return result, fingerprint, trust def _get_whisper_message(self, jid, device, key): cipher = self._get_session_cipher(jid, device) cipher_key = cipher.encrypt(key) prekey = isinstance(cipher_key, PreKeyWhisperMessage) return cipher_key.serialize(), prekey def encrypt(self, jid, plaintext): try: devices_for_encryption = self.get_devices_for_encryption(jid) except NoDevicesFound: self._log.warning('No devices for encryption found for: %s', jid) return result = aes_encrypt(plaintext) whisper_messages = defaultdict(dict) for jid_, device in devices_for_encryption: count = self._storage.getUnacknowledgedCount(jid_, device) if count >= UNACKNOWLEDGED_COUNT: self._log.warning('Set device inactive %s because of %s ' 'unacknowledged messages', device, count) self.remove_device(jid_, device) try: whisper_messages[jid_][device] = self._get_whisper_message( jid_, device, result.key) except Exception: self._log.exception('Failed to encrypt') continue recipients = set(whisper_messages.keys()) if jid != self._own_jid: recipients -= set([self._own_jid]) if not recipients: self._log.error('Encrypted keys empty') return encrypted_keys = {} for jid_ in whisper_messages: encrypted_keys.update(whisper_messages[jid_]) self._log.debug('Finished encrypting message') return OMEMOMessage(sid=self.own_device, keys=encrypted_keys, iv=result.iv, payload=result.payload) def encrypt_key_transport(self, jid, devices): whisper_messages = defaultdict(dict) for device in devices: try: whisper_messages[jid][device] = self._get_whisper_message( jid, device, get_new_key()) except Exception: self._log.exception('Failed to encrypt') continue if not whisper_messages[jid]: self._log.error('Encrypted keys empty') return self._log.debug('Finished Key Transport message') return OMEMOMessage(sid=self.own_device, keys=whisper_messages[jid], iv=get_new_iv(), payload=None) def has_trusted_keys(self, jid): inactive = self._storage.getInactiveSessionsKeys(jid) trusted = self._storage.getTrustedFingerprints(jid) return bool(set(trusted) - set(inactive)) def devices_without_sessions(self, jid): known_devices = self.get_devices(jid, without_self=True) missing_devices = [dev for dev in known_devices if not self._storage.containsSession(jid, dev)] if missing_devices: self._log.info('Missing device sessions for %s: %s', jid, missing_devices) return missing_devices def _get_session_cipher(self, jid, device_id): try: return self._session_ciphers[jid][device_id] except KeyError: cipher = SessionCipher(self._storage, self._storage, self._storage, self._storage, jid, device_id) self._session_ciphers[jid][device_id] = cipher return cipher def _process_pre_key_message(self, jid, device, key): self._log.info('Process pre key message from %s', jid) pre_key_message = PreKeyWhisperMessage(serialized=key) if not pre_key_message.getPreKeyId(): raise Exception('Received Pre Key Message ' 'without PreKey => %s' % jid) session_cipher = self._get_session_cipher(jid, device) key = session_cipher.decryptPkmsg(pre_key_message) identity_key = pre_key_message.getIdentityKey() trust = self._get_trust_from_identity_key(jid, identity_key) fingerprint = get_fingerprint(identity_key) self._storage.setIdentityLastSeen(jid, identity_key) self.xmpp_con.set_bundle() self.add_device(jid, device) return key, fingerprint, trust def _process_message(self, jid, device, key): self._log.info('Process message from %s', jid) message = WhisperMessage(serialized=key) session_cipher = self._get_session_cipher(jid, device) key = session_cipher.decryptMsg(message, textMsg=False) identity_key = self._get_identity_key_from_device(jid, device) trust = self._get_trust_from_identity_key(jid, identity_key) fingerprint = get_fingerprint(identity_key) self._storage.setIdentityLastSeen(jid, identity_key) self.add_device(jid, device) return key, fingerprint, trust @staticmethod def _get_identity_key_from_pk_message(key): pre_key_message = PreKeyWhisperMessage(serialized=key) return pre_key_message.getIdentityKey() def _get_identity_key_from_device(self, jid, device): session_record = self._storage.loadSession(jid, device) return session_record.getSessionState().getRemoteIdentityKey() def _get_trust_from_identity_key(self, jid, identity_key): trust = self._storage.getTrustForIdentity(jid, identity_key) return Trust(trust) if trust is not None else Trust.UNDECIDED def _check_pre_key_count(self): # Check if enough PreKeys are available pre_key_count = self._storage.getPreKeyCount() if pre_key_count < MIN_PREKEY_AMOUNT: missing_count = DEFAULT_PREKEY_AMOUNT - pre_key_count self._storage.generateNewPreKeys(missing_count) self._log.info('%s PreKeys created', missing_count) def _cycle_signed_pre_key(self, ik_pair): # Publish every SPK_CYCLE_TIME a new SignedPreKey # Delete all exsiting SignedPreKeys that are older # then SPK_ARCHIVE_TIME # Check if SignedPreKey exist and create if not if not self._storage.getCurrentSignedPreKeyId(): spk = KeyHelper.generateSignedPreKey( ik_pair, self._storage.getNextSignedPreKeyId()) self._storage.storeSignedPreKey(spk.getId(), spk) self._log.debug('New SignedPreKey created, because none existed') # if SPK_CYCLE_TIME is reached, generate a new SignedPreKey now = int(time.time()) timestamp = self._storage.getSignedPreKeyTimestamp( self._storage.getCurrentSignedPreKeyId()) if int(timestamp) < now - SPK_CYCLE_TIME: spk = KeyHelper.generateSignedPreKey( ik_pair, self._storage.getNextSignedPreKeyId()) self._storage.storeSignedPreKey(spk.getId(), spk) self._log.debug('Cycled SignedPreKey') # Delete all SignedPreKeys that are older than SPK_ARCHIVE_TIME timestamp = now - SPK_ARCHIVE_TIME self._storage.removeOldSignedPreKeys(timestamp) class NoValidSessions(Exception): pass class SelfMessage(Exception): pass class MessageNotForDevice(Exception): pass class DecryptionFailed(Exception): pass class KeyExchangeMessage(Exception): pass class InvalidMessage(Exception): pass class DuplicateMessage(Exception): pass omemo/backend/liteaxolotlstore.py0000644000175500017550000007246014155075457017330 0ustar debacledebacle# Copyright (C) 2019 Philipp Hörist # Copyright (C) 2015 Tarek Galal # # This file is part of OMEMO Gajim Plugin. # # OMEMO Gajim Plugin 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. # # OMEMO Gajim Plugin 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 OMEMO Gajim Plugin. If not, see . import time import sqlite3 from collections import namedtuple from axolotl.state.axolotlstore import AxolotlStore from axolotl.state.signedprekeyrecord import SignedPreKeyRecord from axolotl.state.sessionrecord import SessionRecord from axolotl.state.prekeyrecord import PreKeyRecord from axolotl.invalidkeyidexception import InvalidKeyIdException from axolotl.ecc.djbec import DjbECPrivateKey from axolotl.ecc.djbec import DjbECPublicKey from axolotl.identitykeypair import IdentityKeyPair from axolotl.util.medium import Medium from axolotl.util.keyhelper import KeyHelper from gajim.common import app from omemo.backend.util import Trust from omemo.backend.util import IdentityKeyExtended from omemo.backend.util import DEFAULT_PREKEY_AMOUNT def _convert_to_string(text): return text.decode() def _convert_identity_key(key): if not key: return return IdentityKeyExtended(DjbECPublicKey(key[1:])) def _convert_record(record): return SessionRecord(serialized=record) sqlite3.register_converter('pk', _convert_identity_key) sqlite3.register_converter('session_record', _convert_record) class LiteAxolotlStore(AxolotlStore): def __init__(self, db_path, log): self._log = log self._con = sqlite3.connect(db_path, detect_types=sqlite3.PARSE_COLNAMES) self._con.row_factory = self._namedtuple_factory self.createDb() self.migrateDb() self._con.execute("PRAGMA secure_delete=1") self._con.execute("PRAGMA synchronous=NORMAL;") mode = self._con.execute("PRAGMA journal_mode;").fetchone()[0] # WAL is a persistent DB mode, don't override it if user has set it if mode != 'wal': self._con.execute("PRAGMA journal_mode=MEMORY;") self._con.commit() if not self.getLocalRegistrationId(): self._log.info("Generating OMEMO keys") self._generate_axolotl_keys() @staticmethod def _is_blind_trust_enabled(): plugin = app.plugin_manager.get_active_plugin('omemo') return plugin.config['BLIND_TRUST'] @staticmethod def _namedtuple_factory(cursor, row): fields = [] for col in cursor.description: if col[0] == '_id': fields.append('id') elif 'strftime' in col[0]: fields.append('formated_time') elif 'MAX' in col[0] or 'COUNT' in col[0]: col_name = col[0].replace('(', '_') col_name = col_name.replace(')', '') fields.append(col_name.lower()) else: fields.append(col[0]) return namedtuple("Row", fields)(*row) def _generate_axolotl_keys(self): identity_key_pair = KeyHelper.generateIdentityKeyPair() registration_id = KeyHelper.getRandomSequence(2147483647) pre_keys = KeyHelper.generatePreKeys( KeyHelper.getRandomSequence(4294967296), DEFAULT_PREKEY_AMOUNT) self.storeLocalData(registration_id, identity_key_pair) signed_pre_key = KeyHelper.generateSignedPreKey( identity_key_pair, KeyHelper.getRandomSequence(65536)) self.storeSignedPreKey(signed_pre_key.getId(), signed_pre_key) for pre_key in pre_keys: self.storePreKey(pre_key.getId(), pre_key) def user_version(self): return self._con.execute('PRAGMA user_version').fetchone()[0] def createDb(self): if self.user_version() == 0: create_tables = ''' CREATE TABLE IF NOT EXISTS secret ( device_id INTEGER, public_key BLOB, private_key BLOB); CREATE TABLE IF NOT EXISTS identities ( _id INTEGER PRIMARY KEY AUTOINCREMENT, recipient_id TEXT, registration_id INTEGER, public_key BLOB, timestamp INTEGER, trust INTEGER, shown INTEGER DEFAULT 0); CREATE UNIQUE INDEX IF NOT EXISTS public_key_index ON identities (public_key, recipient_id); CREATE TABLE IF NOT EXISTS prekeys( _id INTEGER PRIMARY KEY AUTOINCREMENT, prekey_id INTEGER UNIQUE, sent_to_server BOOLEAN, record BLOB); CREATE TABLE IF NOT EXISTS signed_prekeys ( _id INTEGER PRIMARY KEY AUTOINCREMENT, prekey_id INTEGER UNIQUE, timestamp NUMERIC DEFAULT CURRENT_TIMESTAMP, record BLOB); CREATE TABLE IF NOT EXISTS sessions ( _id INTEGER PRIMARY KEY AUTOINCREMENT, recipient_id TEXT, device_id INTEGER, record BLOB, timestamp INTEGER, active INTEGER DEFAULT 1, UNIQUE(recipient_id, device_id)); ''' create_db_sql = """ BEGIN TRANSACTION; %s PRAGMA user_version=12; END TRANSACTION; """ % (create_tables) self._con.executescript(create_db_sql) def migrateDb(self): """ Migrates the DB """ # Find all double entries and delete them if self.user_version() < 2: delete_dupes = """ DELETE FROM identities WHERE _id not in ( SELECT MIN(_id) FROM identities GROUP BY recipient_id, public_key ); """ self._con.executescript( """ BEGIN TRANSACTION; %s PRAGMA user_version=2; END TRANSACTION; """ % (delete_dupes)) if self.user_version() < 3: # Create a UNIQUE INDEX so every public key/recipient_id tuple # can only be once in the db add_index = """ CREATE UNIQUE INDEX IF NOT EXISTS public_key_index ON identities (public_key, recipient_id); """ self._con.executescript( """ BEGIN TRANSACTION; %s PRAGMA user_version=3; END TRANSACTION; """ % (add_index)) if self.user_version() < 4: # Adds column "active" to the sessions table add_active = """ ALTER TABLE sessions ADD COLUMN active INTEGER DEFAULT 1; """ self._con.executescript( """ BEGIN TRANSACTION; %s PRAGMA user_version=4; END TRANSACTION; """ % (add_active)) if self.user_version() < 5: # Adds DEFAULT Timestamp add_timestamp = """ DROP TABLE signed_prekeys; CREATE TABLE IF NOT EXISTS signed_prekeys ( _id INTEGER PRIMARY KEY AUTOINCREMENT, prekey_id INTEGER UNIQUE, timestamp NUMERIC DEFAULT CURRENT_TIMESTAMP, record BLOB); ALTER TABLE identities ADD COLUMN shown INTEGER DEFAULT 0; UPDATE identities SET shown = 1; """ self._con.executescript( """ BEGIN TRANSACTION; %s PRAGMA user_version=5; END TRANSACTION; """ % (add_timestamp)) if self.user_version() < 6: # Move secret data into own table # We add +1 to registration id because we did that in other code in # earlier versions. On this migration we correct this mistake now. move = """ CREATE TABLE IF NOT EXISTS secret ( device_id INTEGER, public_key BLOB, private_key BLOB); INSERT INTO secret (device_id, public_key, private_key) SELECT registration_id + 1, public_key, private_key FROM identities WHERE recipient_id = -1; """ self._con.executescript( """ BEGIN TRANSACTION; %s PRAGMA user_version=6; END TRANSACTION; """ % move) if self.user_version() < 7: # Convert old device ids to integer convert = """ UPDATE secret SET device_id = device_id % 2147483646; """ self._con.executescript( """ BEGIN TRANSACTION; %s PRAGMA user_version=7; END TRANSACTION; """ % convert) if self.user_version() < 8: # Sanitize invalid BLOBs from the python2 days query_keys = '''SELECT recipient_id, registration_id, CAST(public_key as BLOB) as public_key, CAST(private_key as BLOB) as private_key, timestamp, trust, shown FROM identities''' rows = self._con.execute(query_keys).fetchall() delete = 'DELETE FROM identities' self._con.execute(delete) insert = '''INSERT INTO identities ( recipient_id, registration_id, public_key, private_key, timestamp, trust, shown) VALUES (?, ?, ?, ?, ?, ?, ?)''' for row in rows: try: self._con.execute(insert, row) except Exception as error: self._log.warning(error) self._con.execute('PRAGMA user_version=8') self._con.commit() if self.user_version() < 9: # Sanitize invalid BLOBs from the python2 days query_keys = '''SELECT device_id, CAST(public_key as BLOB) as public_key, CAST(private_key as BLOB) as private_key FROM secret''' rows = self._con.execute(query_keys).fetchall() delete = 'DELETE FROM secret' self._con.execute(delete) insert = '''INSERT INTO secret (device_id, public_key, private_key) VALUES (?, ?, ?)''' for row in rows: try: self._con.execute(insert, row) except Exception as error: self._log.warning(error) self._con.execute('PRAGMA user_version=9') self._con.commit() if self.user_version() < 10: # Sanitize invalid BLOBs from the python2 days query_keys = '''SELECT _id, recipient_id, device_id, CAST(record as BLOB) as record, timestamp, active FROM sessions''' rows = self._con.execute(query_keys).fetchall() delete = 'DELETE FROM sessions' self._con.execute(delete) insert = '''INSERT INTO sessions (_id, recipient_id, device_id, record, timestamp, active) VALUES (?, ?, ?, ?, ?, ?)''' for row in rows: try: self._con.execute(insert, row) except Exception as error: self._log.warning(error) self._con.execute('PRAGMA user_version=10') self._con.commit() if self.user_version() < 11: # Sanitize invalid BLOBs from the python2 days query_keys = '''SELECT _id, prekey_id, sent_to_server, CAST(record as BLOB) as record FROM prekeys''' rows = self._con.execute(query_keys).fetchall() delete = 'DELETE FROM prekeys' self._con.execute(delete) insert = '''INSERT INTO prekeys ( _id, prekey_id, sent_to_server, record) VALUES (?, ?, ?, ?)''' for row in rows: try: self._con.execute(insert, row) except Exception as error: self._log.warning(error) self._con.execute('PRAGMA user_version=11') self._con.commit() if self.user_version() < 12: # Sanitize invalid BLOBs from the python2 days query_keys = '''SELECT _id, prekey_id, timestamp, CAST(record as BLOB) as record FROM signed_prekeys''' rows = self._con.execute(query_keys).fetchall() delete = 'DELETE FROM signed_prekeys' self._con.execute(delete) insert = '''INSERT INTO signed_prekeys ( _id, prekey_id, timestamp, record) VALUES (?, ?, ?, ?)''' for row in rows: try: self._con.execute(insert, row) except Exception as error: self._log.warning(error) self._con.execute('PRAGMA user_version=12') self._con.commit() def loadSignedPreKey(self, signedPreKeyId): query = 'SELECT record FROM signed_prekeys WHERE prekey_id = ?' result = self._con.execute(query, (signedPreKeyId, )).fetchone() if result is None: raise InvalidKeyIdException("No such signedprekeyrecord! %s " % signedPreKeyId) return SignedPreKeyRecord(serialized=result.record) def loadSignedPreKeys(self): query = 'SELECT record FROM signed_prekeys' results = self._con.execute(query).fetchall() return [SignedPreKeyRecord(serialized=row.record) for row in results] def storeSignedPreKey(self, signedPreKeyId, signedPreKeyRecord): query = 'INSERT INTO signed_prekeys (prekey_id, record) VALUES(?,?)' self._con.execute(query, (signedPreKeyId, signedPreKeyRecord.serialize())) self._con.commit() def containsSignedPreKey(self, signedPreKeyId): query = 'SELECT record FROM signed_prekeys WHERE prekey_id = ?' result = self._con.execute(query, (signedPreKeyId,)).fetchone() return result is not None def removeSignedPreKey(self, signedPreKeyId): query = 'DELETE FROM signed_prekeys WHERE prekey_id = ?' self._con.execute(query, (signedPreKeyId,)) self._con.commit() def getNextSignedPreKeyId(self): result = self.getCurrentSignedPreKeyId() if result is None: return 1 # StartId if no SignedPreKeys exist return (result % (Medium.MAX_VALUE - 1)) + 1 def getCurrentSignedPreKeyId(self): query = 'SELECT MAX(prekey_id) FROM signed_prekeys' result = self._con.execute(query).fetchone() return result.max_prekey_id if result is not None else None def getSignedPreKeyTimestamp(self, signedPreKeyId): query = '''SELECT strftime('%s', timestamp) FROM signed_prekeys WHERE prekey_id = ?''' result = self._con.execute(query, (signedPreKeyId,)).fetchone() if result is None: raise InvalidKeyIdException('No such signedprekeyrecord! %s' % signedPreKeyId) return result.formated_time def removeOldSignedPreKeys(self, timestamp): query = '''DELETE FROM signed_prekeys WHERE timestamp < datetime(?, "unixepoch")''' self._con.execute(query, (timestamp,)) self._con.commit() def loadSession(self, recipientId, deviceId): query = '''SELECT record as "record [session_record]" FROM sessions WHERE recipient_id = ? AND device_id = ?''' result = self._con.execute(query, (recipientId, deviceId)).fetchone() return result.record if result is not None else SessionRecord() def getJidFromDevice(self, device_id): query = '''SELECT recipient_id FROM sessions WHERE device_id = ?''' result = self._con.execute(query, (device_id, )).fetchone() return result.recipient_id if result is not None else None def getActiveDeviceTuples(self): query = '''SELECT recipient_id, device_id FROM sessions WHERE active = 1''' return self._con.execute(query).fetchall() def storeSession(self, recipientId, deviceId, sessionRecord): query = '''INSERT INTO sessions(recipient_id, device_id, record) VALUES(?,?,?)''' try: self._con.execute(query, (recipientId, deviceId, sessionRecord.serialize())) except sqlite3.IntegrityError: query = '''UPDATE sessions SET record = ? WHERE recipient_id = ? AND device_id = ?''' self._con.execute(query, (sessionRecord.serialize(), recipientId, deviceId)) self._con.commit() def containsSession(self, recipientId, deviceId): query = '''SELECT record FROM sessions WHERE recipient_id = ? AND device_id = ?''' result = self._con.execute(query, (recipientId, deviceId)).fetchone() return result is not None def deleteSession(self, recipientId, deviceId): self._log.info('Delete session for %s %s', recipientId, deviceId) query = "DELETE FROM sessions WHERE recipient_id = ? AND device_id = ?" self._con.execute(query, (recipientId, deviceId)) self._con.commit() def deleteAllSessions(self, recipientId): query = 'DELETE FROM sessions WHERE recipient_id = ?' self._con.execute(query, (recipientId,)) self._con.commit() def getSessionsFromJid(self, recipientId): query = '''SELECT recipient_id, device_id, record as "record [session_record]", active FROM sessions WHERE recipient_id = ?''' return self._con.execute(query, (recipientId,)).fetchall() def getSessionsFromJids(self, recipientIds): query = '''SELECT recipient_id, device_id, record as "record [session_record]", active FROM sessions WHERE recipient_id IN ({})'''.format( ', '.join(['?'] * len(recipientIds))) return self._con.execute(query, recipientIds).fetchall() def setActiveState(self, jid, devicelist): query = '''UPDATE sessions SET active = 1 WHERE recipient_id = ? AND device_id IN ({})'''.format( ', '.join(['?'] * len(devicelist))) self._con.execute(query, (jid,) + tuple(devicelist)) query = '''UPDATE sessions SET active = 0 WHERE recipient_id = ? AND device_id NOT IN ({})'''.format( ', '.join(['?'] * len(devicelist))) self._con.execute(query, (jid,) + tuple(devicelist)) self._con.commit() def setInactive(self, jid, device_id): query = '''UPDATE sessions SET active = 0 WHERE recipient_id = ? AND device_id = ?''' self._con.execute(query, (jid, device_id)) self._con.commit() def getInactiveSessionsKeys(self, recipientId): query = '''SELECT record as "record [session_record]" FROM sessions WHERE active = 0 AND recipient_id = ?''' results = self._con.execute(query, (recipientId,)).fetchall() keys = [] for result in results: key = result.record.getSessionState().getRemoteIdentityKey() keys.append(IdentityKeyExtended(key.getPublicKey())) return keys def loadPreKey(self, preKeyId): query = '''SELECT record FROM prekeys WHERE prekey_id = ?''' result = self._con.execute(query, (preKeyId,)).fetchone() if result is None: raise Exception("No such prekeyRecord!") return PreKeyRecord(serialized=result.record) def loadPendingPreKeys(self): query = '''SELECT record FROM prekeys''' result = self._con.execute(query).fetchall() return [PreKeyRecord(serialized=row.record) for row in result] def storePreKey(self, preKeyId, preKeyRecord): query = 'INSERT INTO prekeys (prekey_id, record) VALUES(?,?)' self._con.execute(query, (preKeyId, preKeyRecord.serialize())) self._con.commit() def containsPreKey(self, preKeyId): query = 'SELECT record FROM prekeys WHERE prekey_id = ?' result = self._con.execute(query, (preKeyId,)).fetchone() return result is not None def removePreKey(self, preKeyId): query = 'DELETE FROM prekeys WHERE prekey_id = ?' self._con.execute(query, (preKeyId,)) self._con.commit() def getCurrentPreKeyId(self): query = 'SELECT MAX(prekey_id) FROM prekeys' return self._con.execute(query).fetchone().max_prekey_id def getPreKeyCount(self): query = 'SELECT COUNT(prekey_id) FROM prekeys' return self._con.execute(query).fetchone().count_prekey_id def generateNewPreKeys(self, count): prekey_id = self.getCurrentPreKeyId() or 0 pre_keys = KeyHelper.generatePreKeys(prekey_id + 1, count) for pre_key in pre_keys: self.storePreKey(pre_key.getId(), pre_key) def getIdentityKeyPair(self): query = '''SELECT public_key as "public_key [pk]", private_key FROM secret LIMIT 1''' result = self._con.execute(query).fetchone() return IdentityKeyPair(result.public_key, DjbECPrivateKey(result.private_key)) def getLocalRegistrationId(self): query = 'SELECT device_id FROM secret LIMIT 1' result = self._con.execute(query).fetchone() return result.device_id if result is not None else None def storeLocalData(self, device_id, identityKeyPair): query = 'SELECT * FROM secret' result = self._con.execute(query).fetchone() if result is not None: self._log.error('Trying to save secret key into ' 'non-empty secret table') return query = '''INSERT INTO secret(device_id, public_key, private_key) VALUES(?, ?, ?)''' public_key = identityKeyPair.getPublicKey().getPublicKey().serialize() private_key = identityKeyPair.getPrivateKey().serialize() self._con.execute(query, (device_id, public_key, private_key)) self._con.commit() def saveIdentity(self, recipientId, identityKey): query = '''INSERT INTO identities (recipient_id, public_key, trust, shown) VALUES(?, ?, ?, ?)''' if not self.containsIdentity(recipientId, identityKey): trust = self.getDefaultTrust(recipientId) self._con.execute(query, (recipientId, identityKey.getPublicKey().serialize(), trust, 1 if trust == Trust.BLIND else 0)) self._con.commit() def containsIdentity(self, recipientId, identityKey): query = '''SELECT * FROM identities WHERE recipient_id = ? AND public_key = ?''' public_key = identityKey.getPublicKey().serialize() result = self._con.execute(query, (recipientId, public_key)).fetchone() return result is not None def deleteIdentity(self, recipientId, identityKey): query = '''DELETE FROM identities WHERE recipient_id = ? AND public_key = ?''' public_key = identityKey.getPublicKey().serialize() self._con.execute(query, (recipientId, public_key)) self._con.commit() def isTrustedIdentity(self, recipientId, identityKey): return True def getTrustForIdentity(self, recipientId, identityKey): query = '''SELECT trust FROM identities WHERE recipient_id = ? AND public_key = ?''' public_key = identityKey.getPublicKey().serialize() result = self._con.execute(query, (recipientId, public_key)).fetchone() return result.trust if result is not None else None def getFingerprints(self, jid): query = '''SELECT recipient_id, public_key as "public_key [pk]", trust, timestamp FROM identities WHERE recipient_id = ? ORDER BY trust ASC''' return self._con.execute(query, (jid,)).fetchall() def getMucFingerprints(self, jids): query = ''' SELECT recipient_id, public_key as "public_key [pk]", trust, timestamp FROM identities WHERE recipient_id IN ({}) ORDER BY trust ASC '''.format(', '.join(['?'] * len(jids))) return self._con.execute(query, jids).fetchall() def hasUndecidedFingerprints(self, jid): query = '''SELECT public_key as "public_key [pk]" FROM identities WHERE recipient_id = ? AND trust = ?''' result = self._con.execute(query, (jid, Trust.UNDECIDED)).fetchall() undecided = [row.public_key for row in result] inactive = self.getInactiveSessionsKeys(jid) undecided = set(undecided) - set(inactive) return bool(undecided) def getDefaultTrust(self, jid): if not self._is_blind_trust_enabled(): return Trust.UNDECIDED query = '''SELECT * FROM identities WHERE recipient_id = ? AND trust IN (0, 1)''' result = self._con.execute(query, (jid,)).fetchone() if result is None: return Trust.BLIND return Trust.UNDECIDED def getTrustedFingerprints(self, jid): query = '''SELECT public_key as "public_key [pk]" FROM identities WHERE recipient_id = ? AND trust IN(1, 3)''' result = self._con.execute(query, (jid,)).fetchall() return [row.public_key for row in result] def getNewFingerprints(self, jid): query = '''SELECT _id FROM identities WHERE shown = 0 AND recipient_id = ?''' result = self._con.execute(query, (jid,)).fetchall() return [row.id for row in result] def setShownFingerprints(self, fingerprints): query = 'UPDATE identities SET shown = 1 WHERE _id IN ({})'.format( ', '.join(['?'] * len(fingerprints))) self._con.execute(query, fingerprints) self._con.commit() def setTrust(self, recipient_id, identityKey, trust): query = '''UPDATE identities SET trust = ? WHERE public_key = ? AND recipient_id = ?''' public_key = identityKey.getPublicKey().serialize() self._con.execute(query, (trust, public_key, recipient_id)) self._con.commit() def isTrusted(self, recipient_id, device_id): record = self.loadSession(recipient_id, device_id) if record.isFresh(): return False identity_key = record.getSessionState().getRemoteIdentityKey() return self.getTrustForIdentity( recipient_id, identity_key) in (Trust.VERIFIED, Trust.BLIND) def getIdentityLastSeen(self, recipient_id, identity_key): identity_key = identity_key.getPublicKey().serialize() query = '''SELECT timestamp FROM identities WHERE recipient_id = ? AND public_key = ?''' result = self._con.execute(query, (recipient_id, identity_key)).fetchone() return result.timestamp if result is not None else None def setIdentityLastSeen(self, recipient_id, identity_key): timestamp = int(time.time()) identity_key = identity_key.getPublicKey().serialize() self._log.info('Set last seen for %s %s', recipient_id, timestamp) query = '''UPDATE identities SET timestamp = ? WHERE recipient_id = ? AND public_key = ?''' self._con.execute(query, (timestamp, recipient_id, identity_key)) self._con.commit() def getUnacknowledgedCount(self, recipient_id, device_id): record = self.loadSession(recipient_id, device_id) if record.isFresh(): return 0 state = record.getSessionState() return state.getSenderChainKey().getIndex() omemo/plugin.py0000644000175500017550000003036114155075457013614 0ustar debacledebacle# Copyright (C) 2019 Philipp Hörist # Copyright (C) 2015 Bahtiar `kalkin-` Gadimov # Copyright (C) 2015 Daniel Gultsch # # This file is part of OMEMO Gajim Plugin. # # OMEMO Gajim Plugin 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. # # OMEMO Gajim Plugin 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 OMEMO Gajim Plugin. If not, see . import logging import binascii import threading from enum import IntEnum, unique from pathlib import Path from gi.repository import GLib from gi.repository import Gtk from gi.repository import Gdk from nbxmpp.namespaces import Namespace from gajim import dialogs from gajim.common import app, ged from gajim.plugins import GajimPlugin from gajim.plugins.plugins_i18n import _ from gajim.groupchat_control import GroupchatControl from omemo import file_crypto from omemo.gtk.key import KeyDialog from omemo.gtk.config import OMEMOConfigDialog from omemo.backend.aes import aes_encrypt_file AXOLOTL_MISSING = 'You are missing Python3-Axolotl or use an outdated version' PROTOBUF_MISSING = "OMEMO can't import Google Protobuf, you can find help in " \ "the GitLab Wiki" ERROR_MSG = '' log = logging.getLogger('gajim.p.omemo') if log.getEffectiveLevel() == logging.DEBUG: log_axolotl = logging.getLogger('axolotl') log_axolotl.setLevel(logging.DEBUG) log_axolotl.addHandler(logging.StreamHandler()) log_axolotl.propagate = False try: import google.protobuf except Exception as error: log.error(error) ERROR_MSG = PROTOBUF_MISSING try: import axolotl except Exception as error: log.error(error) ERROR_MSG = AXOLOTL_MISSING if not ERROR_MSG: try: from omemo.modules import omemo except Exception as error: log.error(error) ERROR_MSG = 'Error: %s' % error @unique class UserMessages(IntEnum): QUERY_DEVICES = 0 NO_FINGERPRINTS = 1 UNDECIDED_FINGERPRINTS = 2 class OmemoPlugin(GajimPlugin): def init(self): # pylint: disable=attribute-defined-outside-init if ERROR_MSG: self.activatable = False self.available_text = ERROR_MSG self.config_dialog = None return self.encryption_name = 'OMEMO' self.allow_groupchat = True self.events_handlers = { 'omemo-new-fingerprint': (ged.PRECORE, self._on_new_fingerprints), 'signed-in': (ged.PRECORE, self._on_signed_in), 'muc-disco-update': (ged.GUI1, self._on_muc_disco_update), 'muc-joined': (ged.GUI1, self._on_muc_joined), } self.modules = [omemo] self.config_dialog = OMEMOConfigDialog(self) self.gui_extension_points = { 'hyperlink_handler': (self._file_decryption, None), 'encrypt' + self.encryption_name: (self._encrypt_message, None), 'gc_encrypt' + self.encryption_name: ( self._muc_encrypt_message, None), 'send_message' + self.encryption_name: ( self._before_sendmessage, None), 'encryption_dialog' + self.encryption_name: ( self._on_encryption_button_clicked, None), 'encryption_state' + self.encryption_name: ( self._encryption_state, None), 'update_caps': (self._update_caps, None)} self.disabled_accounts = [] self._windows = {} self.config_default_values = { 'DISABLED_ACCOUNTS': ([], ''), 'BLIND_TRUST': (True, ''), 'SHOW_HELP_FINGERPRINTS': (True, ''), } for account in self.config['DISABLED_ACCOUNTS']: self.disabled_accounts.append(account) self._load_css() def _is_enabled_account(self, account): if account in self.disabled_accounts: return False if account == 'Local': return False return True @staticmethod def get_omemo(account): return app.connections[account].get_module('OMEMO') @staticmethod def _load_css(): path = Path(__file__).parent / 'gtk' / 'style.css' try: with path.open("r") as file: css = file.read() except Exception as exc: log.error('Error loading css: %s', exc) return try: provider = Gtk.CssProvider() provider.load_from_data(bytes(css.encode('utf-8'))) Gtk.StyleContext.add_provider_for_screen(Gdk.Screen.get_default(), provider, 610) except Exception: log.exception('Error loading application css') def activate(self): """ Method called when the Plugin is activated in the PluginManager """ for account in app.connections: if not self._is_enabled_account(account): continue self.get_omemo(account).activate() def deactivate(self): """ Method called when the Plugin is deactivated in the PluginManager """ for account in app.connections: if not self._is_enabled_account(account): continue self.get_omemo(account).deactivate() def _on_signed_in(self, event): account = event.conn.name if not self._is_enabled_account(account): return self.get_omemo(account).on_signed_in() def _on_muc_disco_update(self, event): if not self._is_enabled_account(event.account): return self.get_omemo(event.account).on_muc_disco_update(event) def _on_muc_joined(self, event): if not self._is_enabled_account(event.account): return self.get_omemo(event.account).on_muc_joined(event) def _update_caps(self, account, features): if not self._is_enabled_account(account): return features.append('%s+notify' % Namespace.OMEMO_TEMP_DL) @staticmethod def activate_encryption(chat_control): return True def _muc_encrypt_message(self, conn, obj, callback): account = conn.name if not self._is_enabled_account(account): return self.get_omemo(account).encrypt_message(conn, obj, callback, True) def _encrypt_message(self, conn, obj, callback): account = conn.name if not self._is_enabled_account(account): return self.get_omemo(account).encrypt_message(conn, obj, callback, False) def _file_decryption(self, uri, instance, window): file_crypto.FileDecryption(self).hyperlink_handler( uri, instance, window) def encrypt_file(self, file, _account, callback): thread = threading.Thread(target=self._encrypt_file_thread, args=(file, callback)) thread.daemon = True thread.start() @staticmethod def _encrypt_file_thread(file, callback, *args, **kwargs): result = aes_encrypt_file(file.get_data()) file.size = len(result.payload) fragment = binascii.hexlify(result.iv + result.key).decode() file.set_uri_transform_func( lambda uri: 'aesgcm%s#%s' % (uri[5:], fragment)) file.set_encrypted_data(result.payload) GLib.idle_add(callback, file) @staticmethod def _encryption_state(_chat_control, state): state['visible'] = True state['authenticated'] = True def _on_encryption_button_clicked(self, chat_control): self._show_fingerprint_window(chat_control) def _before_sendmessage(self, chat_control): account = chat_control.account if not self._is_enabled_account(account): return contact = chat_control.contact omemo = self.get_omemo(account) self.new_fingerprints_available(chat_control) if isinstance(chat_control, GroupchatControl): room = chat_control.room_jid if not omemo.is_omemo_groupchat(room): dialogs.ErrorDialog( _('Bad Configuration'), _('To use OMEMO in a Groupchat, the Groupchat should be' ' non-anonymous and members-only.')) chat_control.sendmessage = False return missing = True for jid in omemo.backend.get_muc_members(room): if not omemo.are_keys_missing(jid): missing = False if missing: log.info('%s => No Trusted Fingerprints for %s', account, room) self.print_message(chat_control, UserMessages.NO_FINGERPRINTS) chat_control.sendmessage = False else: # check if we have devices for the contact if not omemo.backend.get_devices(contact.jid, without_self=True): omemo.request_devicelist(contact.jid) self.print_message(chat_control, UserMessages.QUERY_DEVICES) chat_control.sendmessage = False return # check if bundles are missing for some devices if omemo.backend.storage.hasUndecidedFingerprints(contact.jid): log.info('%s => Undecided Fingerprints for %s', account, contact.jid) self.print_message(chat_control, UserMessages.UNDECIDED_FINGERPRINTS) chat_control.sendmessage = False else: log.debug('%s => Sending Message to %s', account, contact.jid) def _on_new_fingerprints(self, event): self.new_fingerprints_available(event.chat_control) def new_fingerprints_available(self, chat_control): jid = chat_control.contact.jid account = chat_control.account omemo = self.get_omemo(account) if isinstance(chat_control, GroupchatControl): for jid_ in omemo.backend.get_muc_members(chat_control.room_jid, without_self=False): fingerprints = omemo.backend.storage.getNewFingerprints(jid_) if fingerprints: self._show_fingerprint_window( chat_control, fingerprints) break elif not isinstance(chat_control, GroupchatControl): fingerprints = omemo.backend.storage.getNewFingerprints(jid) if fingerprints: self._show_fingerprint_window( chat_control, fingerprints) def _show_fingerprint_window(self, chat_control, fingerprints=None): contact = chat_control.contact account = chat_control.account omemo = self.get_omemo(account) transient = chat_control.parent_win.window if 'dialog' not in self._windows: is_groupchat = isinstance(chat_control, GroupchatControl) self._windows['dialog'] = \ KeyDialog(self, contact, transient, self._windows, groupchat=is_groupchat) if fingerprints: log.debug('%s => Showing Fingerprint Prompt for %s', account, contact.jid) omemo.backend.storage.setShownFingerprints(fingerprints) else: self._windows['dialog'].present() self._windows['dialog'].update() if fingerprints: omemo.backend.storage.setShownFingerprints(fingerprints) @staticmethod def print_message(chat_control, kind): msg = None if kind == UserMessages.QUERY_DEVICES: msg = _('No devices found. Query in progress...') elif kind == UserMessages.NO_FINGERPRINTS: msg = _('To send an encrypted message, you have to ' 'first trust the fingerprint of your contact!') elif kind == UserMessages.UNDECIDED_FINGERPRINTS: msg = _('You have undecided fingerprints') if msg is None: return chat_control.add_status_message(msg) omemo/org.gajim.Gajim.Plugin.omemo.metainfo.xml0000644000175500017550000000074514155075457021545 0ustar debacledebacle org.gajim.Gajim.Plugin.omemo org.gajim.Gajim OMEMO Plugin XMPP Extension Protocol (XEP) for secure multi-client end-to-end encryption https://gajim.org/ CC-BY-SA-3.0 GPL-3.0 gajim-devel_AT_gajim.org