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# -*- coding: utf-8; Mode: Python; indent-tabs-mode: nil; tab-width: 4 -*-
# «validation» - miscellaneous validation of user-entered data
#
# Copyright (C) 2005 Junta de Andalucía
# Copyright (C) 2005, 2006, 2007, 2008 Canonical Ltd.
#
# Authors:
#
# - Antonio Olmo Titos <aolmo#emergya._info>
# - Javier Carranza <javier.carranza#interactors._coop>
# - Juan Jesús Ojeda Croissier <juanje#interactors._coop>
# - Colin Watson <cjwatson@ubuntu.com>
# - Evan Dandrea <ev@ubuntu.com>
#
# This file is part of Ubiquity.
#
# Ubiquity 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 2 of the License, or at your option)
# any later version.
#
# Ubiquity 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 Ubiquity; if not, write to the Free Software Foundation, Inc., 51
# Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# Validation library.
# Created by Antonio Olmo <aolmo#emergya._info> on 26 jul 2005.
import os
import re
def check_grub_device(device):
"""Check that the user entered a valid boot device.
@return True if the device is valid, False if it is not."""
regex = re.compile(r'^/dev/([a-zA-Z0-9]+|mapper/[a-zA-Z0-9_]+)$')
if regex.search(device):
if not os.path.exists(device):
return False
return True
# (device[,part-num])
regex = re.compile(r'^\((hd|fd)[0-9]+(,[0-9]+)*\)$')
if regex.search(device):
return True
else:
return False
HOSTNAME_LENGTH = 1
HOSTNAME_BADCHAR = 2
HOSTNAME_BADHYPHEN = 3
HOSTNAME_BADDOTS = 4
def check_hostname(name):
""" Check the correctness of a proposed host name.
@return empty list (valid) or list of:
- C{HOSTNAME_LENGTH} wrong length.
- C{HOSTNAME_BADCHAR} contains invalid characters.
- C{HOSTNAME_BADHYPHEN} starts or ends with a hyphen.
- C{HOSTNAME_BADDOTS} contains consecutive/initial/final dots."""
result = set()
if len(name) < 1 or len(name) > 63:
result.add(HOSTNAME_LENGTH)
regex = re.compile(r'^[a-zA-Z0-9.-]+$')
if not regex.search(name):
result.add(HOSTNAME_BADCHAR)
if name.startswith('-') or name.endswith('-'):
result.add(HOSTNAME_BADHYPHEN)
if '..' in name or name.startswith('.') or name.endswith('.'):
result.add(HOSTNAME_BADDOTS)
return sorted(result)
# Based on setPasswordStrength() in Mozilla Seamonkey, which is tri-licensed
# under MPL 1.1, GPL 2.0, and LGPL 2.1.
def password_strength(password):
upper = lower = digit = symbol = 0
for char in password:
if char.isdigit():
digit += 1
elif char.islower():
lower += 1
elif char.isupper():
upper += 1
else:
symbol += 1
length = len(password)
if length > 5:
length = 5
if digit > 3:
digit = 3
if upper > 3:
upper = 3
if symbol > 3:
symbol = 3
strength = (
((length * 0.1) - 0.2) +
(digit * 0.1) +
(symbol * 0.15) +
(upper * 0.1))
if strength > 1:
strength = 1
if strength < 0:
strength = 0
return strength
def human_password_strength(password):
strength = password_strength(password)
length = len(password)
if length == 0:
hint = ''
color = ''
elif length < 6:
hint = 'too_short'
color = 'darkred'
elif strength < 0.5:
hint = 'weak'
color = 'darkred'
elif strength < 0.75:
hint = 'fair'
color = 'darkorange'
elif strength < 0.9:
hint = 'good'
color = 'darkgreen'
else:
hint = 'strong'
color = 'darkgreen'
return (hint, color)
# TODO dmitrij.ledkov 2012-07-23: factor-out further into generic
# page/pagegtk/pagekde sub-widget
def gtk_password_validate(controller,
password,
verified_password,
password_ok,
password_error_label,
password_strength,
allow_empty=False,
):
complete = True
passw = password.get_text()
vpassw = verified_password.get_text()
if passw != vpassw:
complete = False
password_ok.hide()
if passw and (len(vpassw) / float(len(passw)) > 0.8):
# TODO Cache, use a custom string.
txt = controller.get_string(
'ubiquity/text/password_mismatch')
txt = (
'<small>'
'<span foreground="darkred"><b>%s</b></span>'
'</small>' % txt)
password_error_label.set_markup(txt)
password_error_label.show()
else:
password_error_label.hide()
if allow_empty:
password_strength.hide()
elif not passw:
password_strength.hide()
complete = False
else:
(txt, color) = human_password_strength(passw)
# TODO Cache
txt = controller.get_string('ubiquity/text/password/' + txt)
txt = '<small><span foreground="%s"><b>%s</b></span></small>' \
% (color, txt)
password_strength.set_markup(txt)
password_strength.show()
if passw == vpassw:
password_ok.show()
return complete
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