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# -*- coding: utf-8 -*-
# passwordwindow.py
# Copyright (C) 2014 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/>.
"""
Change password dialog window
"""
from PySide import QtGui
from leap.bitmask.logs.utils import get_logger
from leap.bitmask.util.credentials import password_checks
from leap.bitmask.gui.ui_password_change import Ui_PasswordChange
from leap.bitmask.gui.flashable import Flashable
logger = get_logger()
class PasswordWindow(QtGui.QDialog, Flashable):
_current_window = None # currently visible password window
def __init__(self, parent, account, app):
"""
:param parent: parent object of the PreferencesWindow.
:parent type: QWidget
:param account: the user set in the login widget
:type account: Account
:param app: App instance
:type app: App
"""
QtGui.QDialog.__init__(self, parent)
self.account = account
self.app = app
self._backend_connect()
self.ui = Ui_PasswordChange()
self.ui.setupUi(self)
self.hide_flash()
self.ui.ok_button.clicked.connect(self._change_password)
self.ui.cancel_button.clicked.connect(self.close)
self.ui.username_lineedit.setText(account.address)
if PasswordWindow._current_window is not None:
PasswordWindow._current_window.close()
PasswordWindow._current_window = self
self._disabled = False # if set to True, never again enable widgets.
if account.username is None:
# should not ever happen, but just in case
self._disabled = True
self._enable_password_widgets(False)
self.ui.cancel_button.setEnabled(True)
self.flash_error(self.tr("Please log in to change your password."))
if self.is_soledad_needed() and not self.app.soledad_started:
self._enable_password_widgets(False)
self.ui.cancel_button.setEnabled(True)
self.flash_message(
self.tr("Please wait for data storage to be ready."))
def is_soledad_needed(self):
"""
Returns true if the current account needs to change the soledad
password as well as the SRP password.
"""
return self.account.has_email()
#
# MANAGE WIDGETS
#
def _enable_password_widgets(self, enabled):
"""
Enables or disables the widgets in the password change group box.
:param enabled: True if the widgets should be enabled.
False if widgets should be disabled and
display the status label that shows that is
changing the password.
:type enabled: bool
"""
if self._disabled:
return
if enabled:
self.hide_flash()
else:
self.flash_message(self.tr("Changing password..."))
self.ui.current_password_lineedit.setEnabled(enabled)
self.ui.new_password_lineedit.setEnabled(enabled)
self.ui.new_password_confirmation_lineedit.setEnabled(enabled)
self.ui.ok_button.setEnabled(enabled)
self.ui.cancel_button.setEnabled(enabled)
def _change_password_success(self):
"""
Callback used to display a successfully changed password.
"""
logger.debug("Password changed successfully.")
self._clear_password_inputs()
self._enable_password_widgets(True)
self.flash_success(self.tr("Password changed successfully."))
def _clear_password_inputs(self):
"""
Clear the contents of the inputs.
"""
self.ui.current_password_lineedit.setText("")
self.ui.new_password_lineedit.setText("")
self.ui.new_password_confirmation_lineedit.setText("")
#
# SLOTS
#
def _backend_connect(self):
"""
Helper to connect to backend signals
"""
sig = self.app.signaler
sig.srp_password_change_ok.connect(self._srp_change_password_ok)
sig.srp_password_change_error.connect(self._srp_password_change_error)
sig.srp_password_change_badpw.connect(self._srp_password_change_badpw)
sig.soledad_password_change_ok.connect(
self._soledad_change_password_ok)
sig.soledad_password_change_error.connect(
self._soledad_change_password_problem)
sig.soledad_bootstrap_finished.connect(self._on_soledad_ready)
def _change_password(self):
"""
TRIGGERS:
self.ui.buttonBox.accepted
Changes the user's password if the inputboxes are correctly filled.
"""
current_password = self.ui.current_password_lineedit.text()
new_password = self.ui.new_password_lineedit.text()
new_password2 = self.ui.new_password_confirmation_lineedit.text()
self._enable_password_widgets(True)
if len(current_password) == 0:
self.flash_error(self.tr("Password is empty."))
self.ui.current_password_lineedit.setFocus()
return
ok, msg, field = password_checks(self.account.username, new_password,
new_password2)
if not ok:
self.flash_error(msg)
if field == 'new_password':
self.ui.new_password_lineedit.setFocus()
elif field == 'new_password_confirmation':
self.ui.new_password_confirmation_lineedit.setFocus()
return
self._enable_password_widgets(False)
self.app.backend.user_change_password(
current_password=current_password,
new_password=new_password)
def closeEvent(self, event=None):
"""
TRIGGERS:
cancel_button (indirectly via self.close())
or when window is closed
Close this dialog & delete ourselves to clean up signals.
"""
PasswordWindow._current_window = None
self.deleteLater()
def _srp_change_password_ok(self):
"""
TRIGGERS:
self._backend.signaler.srp_password_change_ok
Callback used to display a successfully changed password.
"""
new_password = self.ui.new_password_lineedit.text()
logger.debug("SRP password changed successfully.")
# FIXME ---- both changes need to be made atomically!
# if there is some problem changing password in soledad (for instance,
# it checks for length), any exception raised will be lost and we will
# have an inconsistent state between soledad and srp passwords.
# We need to implement rollaback.
if self.is_soledad_needed():
self.app.backend.soledad_change_password(new_password=new_password)
else:
self._change_password_success()
def _srp_password_change_error(self):
"""
TRIGGERS:
self._backend.signaler.srp_password_change_error
Unknown problem changing password
"""
msg = self.tr("There was a problem changing the password.")
logger.error(msg)
self._enable_password_widgets(True)
self.flash_error(msg)
def _srp_password_change_badpw(self):
"""
TRIGGERS:
self._backend.signaler.srp_password_change_badpw
The password the user entered was wrong.
"""
msg = self.tr("You did not enter a correct current password.")
logger.error(msg)
self._enable_password_widgets(True)
self.flash_error(msg)
self.ui.current_password_lineedit.setFocus()
def _soledad_change_password_ok(self):
"""
TRIGGERS:
Signaler.soledad_password_change_ok
Soledad password change went OK.
"""
logger.debug("Soledad password changed successfully.")
self._change_password_success()
def _soledad_change_password_problem(self, msg):
"""
TRIGGERS:
Signaler.soledad_password_change_error
Callback used to display an error on changing password.
:param msg: the message to show to the user.
:type msg: unicode
"""
logger.error("Error changing soledad password: %s" % (msg,))
self._enable_password_widgets(True)
self.flash_error(msg)
def _on_soledad_ready(self):
"""
TRIGGERS:
Signaler.soledad_bootstrap_finished
"""
self._enable_password_widgets(True)
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