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## userGroupIds.py - allocate new user and group ids according to prefs
## Copyright (C) 2006 Red Hat, Inc.
## Copyright (C) 2006 Nils Philippsen <nphilipp@redhat.com>
## 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 2 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, write to the Free Software
## Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
import string
import libuser
#import messageDialog
##
## I18N
##
from rhpl.translate import _, N_
import rhpl.translate as translate
domain = "system-config-users"
translate.textdomain (domain)
high_uid_ignore = ['nfsnobody']
high_gid_ignore = ['nfsnobody']
class DuplicateUidNumberError (Exception):
def __init__ (self, uidNumber):
self.uidNumber = uidNumber
class DuplicateGidNumberError (Exception):
def __init__ (self, gidNumber):
self.gidNumber = gidNumber
def find_uid_gid (lu_admin, preferences, uidNumber = None, gidNumber = None):
"""
Try to find a free uid/gid number pair based on preferences, eventually with a given uid number.
"""
uidNumbers = map (lambda x: x[libuser.UIDNUMBER][0], filter (lambda x: x[libuser.USERNAME][0] not in high_uid_ignore, lu_admin.enumerateUsersFull ()))
if uidNumber == None:
uidNumber = 500
if preferences['ASSIGN_HIGHEST_UID']:
for uidNum in uidNumbers:
if uidNum > uidNumber:
uidNumber = uidNum + 1
while uidNumber in uidNumbers:
uidNumber += 1
while gidNumber == None or uidNumber in uidNumbers:
if uidNumber not in uidNumbers:
try:
gidNumber = find_gid (lu_admin, preferences, preferences['PREFER_SAME_UID_GID'] and uidNumber or None)
except DuplicateGidNumberError:
uidNumber += 1
else:
uidNumber += 1
else:
if uidNumber in uidNumbers:
raise DuplicateUidNumberError (uidNumber)
gidNumber = find_gid (lu_admin, preferences, gidNumber != None and gidNumber or (preferences['PREFER_SAME_UID_GID'] and uidNumber or None))
return (uidNumber, gidNumber)
def find_gid (lu_admin, preferences, gidNumber = None):
"""
Try to find a free gid number based on preferences, eventually with a given gid number.
"""
gidNumbers = map (lambda x: x[libuser.GIDNUMBER][0], filter (lambda x: x[libuser.GROUPNAME][0] not in high_gid_ignore, lu_admin.enumerateGroupsFull ()))
if gidNumber == None:
gidNumber = 500
if preferences['ASSIGN_HIGHEST_GID']:
for gidNum in gidNumbers:
if gidNum > gidNumber:
gidNumber = gidNum + 1
while gidNumber in gidNumbers:
gidNumber += 1
else:
if gidNumber in gidNumbers:
raise DuplicateGidNumberError (gidNumber)
return gidNumber
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