freeipa/ipalib/util.py
Rob Crittenden d885339f1c Require that hosts be resolvable in DNS. Use --force to ignore warnings.
This also requires a resolvable hostname on services as well. I want
people to think long and hard about adding things that aren't resolvable.

The cert plugin can automatically create services on the user's behalf when
issuing a cert. It will always set the force flag to True.

We use a lot of made-up host names in the test system, all of which require
the force flag now.

ticket #25
2010-08-06 15:31:57 -04:00

132 lines
3.6 KiB
Python

# 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 ipalib import errors
from ipapython import dnsclient
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)
)