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# -*- coding: utf-8 -*-
# Copyright 2010-2013 Kolab Systems AG (http://www.kolabsys.com)
#
# Jeroen van Meeuwen (Kolab Systems) <vanmeeuwen a kolabsys.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 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/>.
#
import grp
import logging
import logging.handlers
import os
import pwd
import sys
import time
from pykolab.translate import _
class Logger(logging.Logger):
"""
The PyKolab version of a logger.
This class wraps the Python native logging library, adding to the
loglevel capabilities, a debuglevel capability.
"""
debuglevel = 0
fork = False
loglevel = logging.CRITICAL
process_username = 'kolab'
process_groupname = 'kolab-n'
if hasattr(sys, 'argv'):
for arg in sys.argv:
if debuglevel == -1:
try:
debuglevel = int(arg)
except ValueError, errmsg:
continue
loglevel = logging.DEBUG
break
if '-d' == arg:
debuglevel = -1
continue
if '-l' == arg:
loglevel = -1
continue
if '--fork' == arg:
fork = True
if loglevel == -1:
if hasattr(logging,arg.upper()):
loglevel = getattr(logging,arg.upper())
else:
loglevel = logging.DEBUG
if '-u' == arg or '--user' == arg:
process_username = -1
continue
if arg.startswith('--user='):
process_username = arg.split('=')[1]
if process_username == -1:
process_username = arg
if '-g' == arg or '--group' == arg:
process_groupname = -1
continue
if arg.startswith('--group='):
process_groupname = arg.split('=')[1]
if process_groupname == -1:
process_groupname = arg
def __init__(self, *args, **kw):
if kw.has_key('name'):
name = kw['name']
elif len(args) == 1:
name = args[0]
else:
name = 'pykolab'
logging.Logger.__init__(self, name)
plaintextformatter = logging.Formatter("%(asctime)s %(name)s %(levelname)s %(message)s")
if not self.fork:
self.console_stdout = logging.StreamHandler(sys.stdout)
self.console_stdout.setFormatter(plaintextformatter)
self.addHandler(self.console_stdout)
if kw.has_key('logfile'):
self.logfile = kw['logfile']
else:
self.logfile = '/var/log/kolab/pykolab.log'
group_gid = 0
user_uid = 0
# Make sure (read: attempt to change) the permissions
try:
try:
(ruid, euid, suid) = os.getresuid()
(rgid, egid, sgid) = os.getresgid()
except AttributeError, errmsg:
ruid = os.getuid()
rgid = os.getgid()
if ruid == 0:
# Means we can setreuid() / setregid() / setgroups()
if rgid == 0:
# Get group entry details
try:
(
group_name,
group_password,
group_gid,
group_members
) = grp.getgrnam(self.process_groupname)
except KeyError, errmsg:
group_name = False
if ruid == 0:
# Means we haven't switched yet.
try:
(
user_name,
user_password,
user_uid,
user_gid,
user_gecos,
user_homedir,
user_shell
) = pwd.getpwnam(self.process_username)
except KeyError, errmsg:
user_name = False
if os.path.isfile(self.logfile):
try:
if not user_uid == 0 or group_gid == 0:
os.chown(
self.logfile,
user_uid,
group_gid
)
os.chmod(self.logfile, 0660)
except Exception, errmsg:
self.error(_("Could not change permissions on %s: %r") % (self.logfile, errmsg))
if self.debuglevel > 8:
import traceback
traceback.print_exc()
except Exception, errmsg:
if os.path.isfile(self.logfile):
self.error(_("Could not change permissions on %s: %r") % (self.logfile, errmsg))
if self.debuglevel > 8:
import traceback
traceback.print_exc()
# Make sure the log file exists
try:
fhandle = file(self.logfile, 'a')
try:
os.utime(self.logfile, None)
finally:
fhandle.close()
try:
filelog_handler = logging.FileHandler(filename=self.logfile)
filelog_handler.setFormatter(plaintextformatter)
except IOError, e:
print >> sys.stderr, _("Cannot log to file %s: %s") % (self.logfile, e)
if not len(self.handlers) > 1:
try:
self.addHandler(filelog_handler)
except:
pass
except IOError, errmsg:
pass
def remove_stdout_handler(self):
if not self.fork:
self.console_stdout.close()
self.removeHandler(self.console_stdout)
def debug(self, msg, level=1, *args, **kw):
self.setLevel(self.loglevel)
# Work around other applications not using various levels of debugging
if not self.name.startswith('pykolab') and not self.debuglevel == 9:
return
if level <= self.debuglevel:
# TODO: Not the way it's supposed to work!
self.log(logging.DEBUG, '[%d]: %s' % (os.getpid(),msg))
logging.setLoggerClass(Logger)
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