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#!/usr/bin/python -O
#---------------------------------------------------------------
# Project : Mandrake Linux
# Module : msec
# File : Perms.py
# Version : $Id$
# Author : Frederic Lepied
# Created On : Fri Dec 7 23:33:49 2001
# Purpose : fix permissions and owner/group of files
# and directories.
#---------------------------------------------------------------
import glob
import re
import string
import os
import stat
import pwd
import grp
import Config
import sys
from Log import *
import gettext
try:
cat = gettext.Catalog('msec')
_ = cat.gettext
except IOError:
_ = str
comment_regex = re.compile('^\s*#|^\s*$')
user = {}
group = {}
userid = {}
groupid = {}
def get_user_id(name):
try:
return user[name]
except KeyError:
try:
user[name] = pwd.getpwnam(name)[2]
except KeyError:
error(_('user name %s not found') % name)
user[name] = -1
return user[name]
def get_user_name(id):
try:
return userid[id]
except KeyError:
try:
userid[id] = pwd.getpwuid(id)[0]
except KeyError:
error(_('user name not found for id %d') % id)
userid[id] = str(id)
return userid[id]
def get_group_id(name):
try:
return group[name]
except KeyError:
try:
group[name] = grp.getgrnam(name)[2]
except KeyError:
error(_('group name %s not found') % name)
group[name] = -1
return group[name]
def get_group_name(id):
try:
return groupid[id]
except KeyError:
try:
groupid[id] = grp.getgrgid(id)[0]
except KeyError:
error(_('group name not found for id %d') % id)
groupid[id] = str(id)
return groupid[id]
assoc = {}
def fix_perms(path):
try:
file = open(path, 'r')
except IOError:
return
root = Config.get_config('root', '')
lineno = 0
for line in file.readlines():
lineno = lineno + 1
if comment_regex.search(line):
continue
fields = re.split('\s*', line)
mode_str = fields[2]
if mode_str == 'current':
newmode = -1
else:
newmode = int(mode_str, 8)
if fields[1] == 'current':
user = group = -1
user_str = group_str = ''
else:
(user_str, group_str) = string.split(fields[1], '.')
user = get_user_id(user_str)
group = get_group_id(group_str)
if len(fields) == 4:
for f in glob.glob(fields[0]):
try:
full = os.stat(f)
except OSError:
continue
mode = stat.S_IMODE(full[stat.ST_MODE])
newperm = newmode
if stat.S_ISDIR(full[stat.ST_MODE]):
if newperm & 0400:
newperm = newperm | 0100
if newperm & 0040:
newperm = newperm | 0010
if newperm & 0004:
newperm = newperm | 0001
uid = full[stat.ST_UID]
gid = full[stat.ST_GID]
if f != '/' and f[-1] == '/':
f = f[:-1]
if f[-2:] == '/.':
f = f[:-2]
assoc[f] = (mode, uid, gid, newperm, user, group, user_str, group_str)
else:
error(_('invalid syntax in %s line %d') % (path, lineno))
file.close()
def act():
for f in assoc.keys():
(mode, uid, gid, newperm, user, group, user_str, group_str) = assoc[f]
#print f, (mode, uid, gid, newperm, user, group)
if newperm != -1 and mode != newperm:
log(_('changed mode of %s from %o to %o') % (f, mode, newperm))
try:
os.chmod(f, newperm)
except:
error('chmod %s %o: %s' % (f, newperm, sys.exc_value[0]))
if user != -1 and user != uid:
log(_('changed owner of %s from %s to %s') % (f, get_user_name(uid), user_str))
try:
os.chown(f, user, -1)
except:
error('chown %s %s: %s' % (f, user, sys.exc_value[0]))
if group != -1 and group != gid:
log(_('changed group of %s from %s to %s') % (f, get_group_name(gid), group_str))
try:
os.chown(f, -1, group)
except:
error('chgrp %s %s: %s' % (f, group, sys.exc_value[0]))
def chmod(f, newperm):
try:
full = os.stat(f)
except OSError:
return 0
mode = stat.S_IMODE(full[stat.ST_MODE])
if stat.S_ISDIR(full[stat.ST_MODE]):
if newperm & 0400:
newperm = newperm | 0100
if newperm & 0040:
newperm = newperm | 0010
if newperm & 0004:
newperm = newperm | 0001
if mode != newperm:
log(_('changed mode of %s from %o to %o') % (f, mode, newperm))
try:
os.chmod(f, newperm)
except:
error('chmod %s %o: %s' % (f, newperm, sys.exc_value[0]))
return 1
if __name__ == '__main__':
import sys
import Config
import getopt
_interactive = sys.stdin.isatty()
# process the options
try:
(opt, args) = getopt.getopt(sys.argv[1:], 'o:',
['option'])
except getopt.error:
error(_('Invalid option. Use %s (-o var=<val>...) ([0-5])') % sys.argv[0])
sys.exit(1)
for o in opt:
if o[0] == '-o' or o[0] == '--option':
pair = string.split(o[1], '=')
if len(pair) != 2:
error(_('Invalid option format %s %s: use -o var=<val>') % (o[0], o[1]))
sys.exit(1)
else:
Config.set_config(pair[0], pair[1])
# initlog must be done after processing the option because we can change
# the way to report log with options...
if _interactive:
import syslog
initlog('msec', syslog.LOG_LOCAL1)
else:
initlog('msec')
_interactive and log(_('Fixing owners and permissions of files and directories'))
# process the files
for p in args:
_interactive and log(_('Reading data from %s') % p)
fix_perms(p)
# do the modifications
act()
# Perms.py ends here
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