omemo-signatures/omemo/gtk/key.py

456 lines
15 KiB
Python

# Copyright (C) 2019 Philipp Hörist <philipp AT hoerist.com>
#
# 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 <http://www.gnu.org/licenses/>.
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 = '<a href="%s">%s</a>' % (
'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)