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# -*- coding: utf-8 -*-
# advanced_key_management.py
# Copyright (C) 2013 LEAP
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
Advanced Key Management
"""
import logging
from PySide import QtGui
from leap.keymanager import openpgp
from leap.keymanager.errors import KeyAddressMismatch, KeyFingerprintMismatch
from leap.bitmask.services import get_service_display_name, MX_SERVICE
from ui_advanced_key_management import Ui_AdvancedKeyManagement
logger = logging.getLogger(__name__)
class AdvancedKeyManagement(QtGui.QDialog):
"""
Advanced Key Management
"""
def __init__(self, parent, has_mx, user, keymanager, soledad_started):
"""
:param parent: parent object of AdvancedKeyManagement.
:parent type: QWidget
:param has_mx: defines whether the current provider provides email or
not.
:type has_mx: bool
:param user: the current logged in user.
:type user: unicode
:param keymanager: the existing keymanager instance
:type keymanager: KeyManager
:param soledad_started: whether soledad has started or not
:type soledad_started: bool
"""
QtGui.QDialog.__init__(self, parent)
self.ui = Ui_AdvancedKeyManagement()
self.ui.setupUi(self)
# XXX: Temporarily disable the key import.
self.ui.pbImportKeys.setVisible(False)
if not has_mx:
msg = self.tr("The provider that you are using "
"does not support {0}.")
msg = msg.format(get_service_display_name(MX_SERVICE))
self._disable_ui(msg)
return
if not soledad_started:
msg = self.tr("To use this, you need to enable/start {0}.")
msg = msg.format(get_service_display_name(MX_SERVICE))
self._disable_ui(msg)
return
# XXX: since import is disabled this is no longer a dangerous feature.
# else:
# msg = self.tr(
# "<span style='color:#ff0000;'>WARNING</span>:<br>"
# "This is an experimental feature, you can lose access to "
# "existing e-mails.")
# self.ui.lblStatus.setText(msg)
self._keymanager = keymanager
self._key = keymanager.get_key(user, openpgp.OpenPGPKey)
self._key_priv = keymanager.get_key(
user, openpgp.OpenPGPKey, private=True)
# show current key information
self.ui.leUser.setText(user)
self.ui.leKeyID.setText(self._key.key_id)
self.ui.leFingerprint.setText(self._key.fingerprint)
# set up connections
self.ui.pbImportKeys.clicked.connect(self._import_keys)
self.ui.pbExportKeys.clicked.connect(self._export_keys)
# Stretch columns to content
self.ui.twPublicKeys.horizontalHeader().setResizeMode(
0, QtGui.QHeaderView.Stretch)
self._list_keys()
def _disable_ui(self, msg):
"""
Disable the UI and set a note in the status bar.
:param msg: note to display in the status bar.
:type msg: unicode
"""
self.ui.gbMyKeyPair.setEnabled(False)
self.ui.gbStoredPublicKeys.setEnabled(False)
msg = self.tr("<span style='color:#0000FF;'>NOTE</span>: ") + msg
self.ui.lblStatus.setText(msg)
def _import_keys(self):
"""
Imports the user's key pair.
Those keys need to be ascii armored.
"""
fileName, filtr = QtGui.QFileDialog.getOpenFileName(
self, self.tr("Open keys file"),
options=QtGui.QFileDialog.DontUseNativeDialog)
if fileName:
new_key = ''
try:
with open(fileName, 'r') as keys_file:
new_key = keys_file.read()
except IOError as e:
logger.error("IOError importing key. {0!r}".format(e))
QtGui.QMessageBox.critical(
self, self.tr("Input/Output error"),
self.tr("There was an error accessing the file.\n"
"Import canceled."))
return
keymanager = self._keymanager
try:
public_key, private_key = keymanager.parse_openpgp_ascii_key(
new_key)
except (KeyAddressMismatch, KeyFingerprintMismatch) as e:
logger.error(repr(e))
QtGui.QMessageBox.warning(
self, self.tr("Data mismatch"),
self.tr("The public and private key should have the "
"same address and fingerprint.\n"
"Import canceled."))
return
if public_key is None or private_key is None:
QtGui.QMessageBox.warning(
self, self.tr("Missing key"),
self.tr("You need to provide the public AND private "
"key in the same file.\n"
"Import canceled."))
return
if public_key.address != self._key.address:
logger.error("The key does not match the ID")
QtGui.QMessageBox.warning(
self, self.tr("Address mismatch"),
self.tr("The identity for the key needs to be the same "
"as your user address.\n"
"Import canceled."))
return
question = self.tr("Are you sure that you want to replace "
"the current key pair whith the imported?")
res = QtGui.QMessageBox.question(
None, "Change key pair", question,
QtGui.QMessageBox.Yes | QtGui.QMessageBox.No,
QtGui.QMessageBox.No) # default No
if res == QtGui.QMessageBox.No:
return
keymanager.delete_key(self._key)
keymanager.delete_key(self._key_priv)
keymanager.put_key(public_key)
keymanager.put_key(private_key)
keymanager.send_key(openpgp.OpenPGPKey)
logger.debug('Import ok')
QtGui.QMessageBox.information(
self, self.tr("Import Successful"),
self.tr("The key pair was imported successfully."))
else:
logger.debug('Import canceled by the user.')
def _export_keys(self):
"""
Exports the user's key pair.
"""
fileName, filtr = QtGui.QFileDialog.getSaveFileName(
self, self.tr("Save keys file"),
options=QtGui.QFileDialog.DontUseNativeDialog)
if fileName:
try:
with open(fileName, 'w') as keys_file:
keys_file.write(self._key.key_data)
keys_file.write(self._key_priv.key_data)
logger.debug('Export ok')
QtGui.QMessageBox.information(
self, self.tr("Export Successful"),
self.tr("The key pair was exported successfully.\n"
"Please, store your private key in a safe place."))
except IOError as e:
logger.error("IOError exporting key. {0!r}".format(e))
QtGui.QMessageBox.critical(
self, self.tr("Input/Output error"),
self.tr("There was an error accessing the file.\n"
"Export canceled."))
return
else:
logger.debug('Export canceled by the user.')
def _list_keys(self):
"""
Loads all the public keys stored in the local db to the keys table.
"""
keys = self._keymanager.get_all_keys_in_local_db()
keys_table = self.ui.twPublicKeys
for key in keys:
row = keys_table.rowCount()
keys_table.insertRow(row)
keys_table.setItem(row, 0, QtGui.QTableWidgetItem(key.address))
keys_table.setItem(row, 1, QtGui.QTableWidgetItem(key.key_id))
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