old gnuviechadmin version that is not developed anymore
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# -*- coding: utf-8 -*-
#
# Copyright (C) 2007, 2008 by Jan Dittberner.
#
# 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
# USA.
#
# Version: $Id$
"""Tools for handling user and group information."""
import pwd
import grp
class PasswdUser(object):
"""This class represents users in the user database."""
def __init__(self, username, passw, uid, gid, gecos, home, shell):
"""Create a new PasswdUser."""
self.username = username
self.uid = int(uid)
self.gid = int(gid)
self.gecos = gecos
self.home = home
self.shell = shell
def __repr__(self):
"""Returns a user string representation."""
return "%s(%s:%d:%d:%s:%s:%s)" % (self.__class__.__name__,
self.username,
self.uid,
self.gid,
self.gecos,
self.home,
self.shell)
class PasswdGroup(object):
"""This class represents lines in the groups database."""
def __init__(self, groupname, passwd, gid, members):
"""Create a new PasswdGroup."""
self.groupname = groupname
self.gid = int(gid)
self.members = members
def __repr__(self):
"""Returns a group string representation."""
return "%s(%s:%d:%s)" % (self.__class__.__name__,
self.groupname,
self.gid,
",".join(self.members))
def parse_groups():
"""Parses all available groups to PasswdGroup instances."""
return [PasswdGroup(*arr) for arr in grp.getgrall()]
def parse_users():
"""Parses all available users to PasswdUser instances."""
return [PasswdUser(*arr) for arr in pwd.getpwall()]
def find_user_by_prefix(prefix):
"""Finds all user entries with the given prefix."""
return [user for user in parse_users() if user.username.startswith(prefix)]
def get_user_by_id(uid):
"""Gets the user with the given user id."""
users = [user for user in parse_users() if user.uid == uid]
if users:
return users[0]
return None
def get_group_by_id(gid):
"""Gets the group with the given group id."""
groups = [group for group in parse_groups() if group.gid == gid]
if groups:
return groups[0]
return None
def get_next_uid(lowerboundary = 10000, upperboundary = 65536):
"""Gets the first available user id in the given range.
The returned uid is a value between lowerboundary and upper
boundary. An exception is raised if no uid can be found.
Keyword arguments:
lowerboundary -- lower boundary for uid range
upperboundary -- upper boundary for uid range
"""
for uid in range(lowerboundary, upperboundary):
try:
pwd.getpwuid(uid)
except KeyError:
return uid
raise Exception("no free uid found in range %d to %d",
lowerboundary, upperboundary)
def get_max_uid(boundary = 65536):
"""Gets the highest uid value."""
return max([user.uid for user in parse_users() if user.uid <= boundary])
def get_max_gid(boundary = 65536):
"""Gets the highest gid value."""
return max([group.gid for group in parse_groups() \
if group.gid <= boundary])
if __name__ == "__main__":
print "Max UID is %d" % (get_max_uid(40000))
print "Max GID is %d" % (get_max_gid(40000))
print "User with max UID is %s" % (get_user_by_id(get_max_uid(40000)))
print "Group with max GID is %s" % (get_group_by_id(get_max_gid(40000)))
print "First free UID is %s" % (get_next_uid(10000, 40000))