kallithea Changeset - 3e81e6534cad

Changeset - 3e81e6534cad

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stable

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Mads Kiilerich - 11 years ago 2015-07-07 02:09:35
madski@unity3d.com

auth: make random password generator more random

Use the secure os.urandom instead of the pseudo-random 'random' module.

1 file changed with 9 insertions and 9 deletions:

kallithea/lib/auth.py

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kallithea/lib/auth.py

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 # -*- coding: utf-8 -*-
 # 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/>.
 """
 kallithea.lib.auth
 ~~~~~~~~~~~~~~~~~~
 authentication and permission libraries
 This file was forked by the Kallithea project in July 2014.
 Original author and date, and relevant copyright and licensing information is below:
 :created_on: Apr 4, 2010
 :author: marcink
 :copyright: (c) 2013 RhodeCode GmbH, and others.
 :license: GPLv3, see LICENSE.md for more details.
 """
 from __future__ import with_statement
 import time
-import random
+import os
 import logging
 import traceback
 import hashlib
 import itertools
 import collections
 from tempfile import _RandomNameSequence
 from decorator import decorator
 from pylons import url, request
 from pylons.controllers.util import abort, redirect
 from pylons.i18n.translation import _
 from webhelpers.pylonslib import secure_form
 from sqlalchemy import or_
 from sqlalchemy.orm.exc import ObjectDeletedError
 from sqlalchemy.orm import joinedload
 from kallithea import __platform__, is_windows, is_unix
 from kallithea.lib.vcs.utils.lazy import LazyProperty
 from kallithea.model import meta
 from kallithea.model.meta import Session
 from kallithea.model.user import UserModel
 from kallithea.model.db import User, Repository, Permission, \
     UserToPerm, UserGroupRepoToPerm, UserGroupToPerm, UserGroupMember, \
     RepoGroup, UserGroupRepoGroupToPerm, UserIpMap, UserGroupUserGroupToPerm, \
     UserGroup, UserApiKeys
 from kallithea.lib.utils2 import safe_unicode, aslist
 from kallithea.lib.utils import get_repo_slug, get_repo_group_slug, \
     get_user_group_slug, conditional_cache
 from kallithea.lib.caching_query import FromCache
 log = logging.getLogger(__name__)
 class PasswordGenerator(object):
     """
     This is a simple class for generating password from different sets of
     characters
     usage::
         passwd_gen = PasswordGenerator()
         #print 8-letter password containing only big and small letters
             of alphabet
         passwd_gen.gen_password(8, passwd_gen.ALPHABETS_BIG_SMALL)
     """
     ALPHABETS_NUM = r'''1234567890'''
     ALPHABETS_SMALL = r'''qwertyuiopasdfghjklzxcvbnm'''
     ALPHABETS_BIG = r'''QWERTYUIOPASDFGHJKLZXCVBNM'''
     ALPHABETS_SPECIAL = r'''`-=[]\;',./~!@#$%^&*()_+{}|:"<>?'''
     ALPHABETS_FULL = ALPHABETS_BIG + ALPHABETS_SMALL \
         + ALPHABETS_NUM + ALPHABETS_SPECIAL
     ALPHABETS_ALPHANUM = ALPHABETS_BIG + ALPHABETS_SMALL + ALPHABETS_NUM
     ALPHABETS_BIG_SMALL = ALPHABETS_BIG + ALPHABETS_SMALL
     ALPHABETS_ALPHANUM_BIG = ALPHABETS_BIG + ALPHABETS_NUM
     ALPHABETS_ALPHANUM_SMALL = ALPHABETS_SMALL + ALPHABETS_NUM
     def __init__(self, passwd=''):
         self.passwd = passwd
     def gen_password(self, length, type_=None):
         if type_ is None:
             type_ = self.ALPHABETS_FULL
         self.passwd = ''.join([random.choice(type_) for _ in xrange(length)])
         return self.passwd
     def gen_password(self, length, alphabet=ALPHABETS_FULL):
         assert len(alphabet) <= 256, alphabet
         l = []
         while len(l) < length:
             i = ord(os.urandom(1))
             if i < len(alphabet):
                 l.append(alphabet[i])
         return ''.join(l)
 class KallitheaCrypto(object):
     @classmethod
     def hash_string(cls, str_):
         """
         Cryptographic function used for password hashing based on pybcrypt
         or pycrypto in windows
         :param password: password to hash
         """
         if is_windows:
             from hashlib import sha256
             return sha256(str_).hexdigest()
         elif is_unix:
             import bcrypt
             return bcrypt.hashpw(str_, bcrypt.gensalt(10))
         else:
             raise Exception('Unknown or unsupported platform %s' \
                             % __platform__)
     @classmethod
     def hash_check(cls, password, hashed):
         """
         Checks matching password with it's hashed value, runs different
         implementation based on platform it runs on
         :param password: password
         :param hashed: password in hashed form
         """
         if is_windows:
             from hashlib import sha256
             return sha256(password).hexdigest() == hashed
         elif is_unix:
             import bcrypt
             return bcrypt.hashpw(password, hashed) == hashed
         else:
             raise Exception('Unknown or unsupported platform %s' \
                             % __platform__)
 def get_crypt_password(password):
     return KallitheaCrypto.hash_string(password)
 def check_password(password, hashed):

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