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# Authors:
# Jason Gerard DeRose <jderose@redhat.com>
#
# Copyright (C) 2008 Red Hat
# see file 'COPYING' for use and warranty information
#
# 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; version 2 only
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""
Various utility functions.
"""
import os
import imp
import logging
import time
import krbV
import socket
from types import NoneType
from ipalib import errors
from ipapython import dnsclient
def json_serialize(obj):
if isinstance(obj, (list, tuple)):
return [json_serialize(o) for o in obj]
if isinstance(obj, dict):
return dict((k, json_serialize(v)) for (k, v) in obj.iteritems())
if isinstance(obj, (bool, float, int, unicode, NoneType)):
return obj
if isinstance(obj, str):
return obj.decode('utf-8')
if not callable(getattr(obj, '__json__', None)):
# raise TypeError('%r is not JSON serializable')
return ''
return json_serialize(obj.__json__())
def get_current_principal():
try:
return unicode(krbV.default_context().default_ccache().principal().name)
except krbV.Krb5Error:
#TODO: do a kinit?
raise errors.CCacheError()
def get_fqdn():
fqdn = ""
try:
fqdn = socket.getfqdn()
except:
try:
fqdn = socket.gethostname()
except:
fqdn = ""
return fqdn
# FIXME: This function has no unit test
def find_modules_in_dir(src_dir):
"""
Iterate through module names found in ``src_dir``.
"""
if not (os.path.abspath(src_dir) == src_dir and os.path.isdir(src_dir)):
return
if os.path.islink(src_dir):
return
suffix = '.py'
for name in sorted(os.listdir(src_dir)):
if not name.endswith(suffix):
continue
pyfile = os.path.join(src_dir, name)
if os.path.islink(pyfile) or not os.path.isfile(pyfile):
continue
module = name[:-len(suffix)]
if module == '__init__':
continue
yield (module, pyfile)
# FIXME: This function has no unit test
def load_plugins_in_dir(src_dir):
"""
Import each Python module found in ``src_dir``.
"""
for module in find_modules_in_dir(src_dir):
imp.load_module(module, *imp.find_module(module, [src_dir]))
# FIXME: This function has no unit test
def import_plugins_subpackage(name):
"""
Import everythig in ``plugins`` sub-package of package named ``name``.
"""
try:
plugins = __import__(name + '.plugins').plugins
except ImportError:
return
src_dir = os.path.dirname(os.path.abspath(plugins.__file__))
for name in find_modules_in_dir(src_dir):
full_name = '%s.%s' % (plugins.__name__, name)
__import__(full_name)
class LogFormatter(logging.Formatter):
"""
Log formatter that uses UTC for all timestamps.
"""
converter = time.gmtime
def make_repr(name, *args, **kw):
"""
Construct a standard representation of a class instance.
"""
args = [repr(a) for a in args]
kw = ['%s=%r' % (k, kw[k]) for k in sorted(kw)]
return '%s(%s)' % (name, ', '.join(args + kw))
def realm_to_suffix(realm_name):
s = realm_name.split(".")
terms = ["dc=" + x.lower() for x in s]
return ",".join(terms)
def validate_host_dns(log, fqdn):
"""
See if the hostname has a DNS A record.
"""
rs = dnsclient.query(fqdn + '.', dnsclient.DNS_C_IN, dnsclient.DNS_T_A)
if len(rs) == 0:
log.debug(
'IPA: DNS A record lookup failed for %s' % fqdn
)
raise errors.DNSNotARecordError()
else:
log.debug(
'IPA: found %d records for %s' % (len(rs), fqdn)
)
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