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#!/usr/bin/env python
#
# Authors:
# Rob Crittenden <rcritten@redhat.com>
#
# Copyright (C) 2010 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, 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/>.
#
# An LDAP client to count entitlements and log to syslog if the number is
# exceeded.
try:
import sys
import os
import syslog
import tempfile
import krbV
import base64
import shutil
from rhsm.certificate import EntitlementCertificate
from ipaserver.plugins.ldap2 import ldap2
from ipalib import api, errors, backend
from ipaserver.install import installutils
from ipapython.dn import DN
except ImportError, e:
# If python-rhsm isn't installed exit gracefully and quietly.
if e.args[0] == 'No module named rhsm.certificate':
sys.exit(0)
print >> sys.stderr, """\
There was a problem importing one of the required Python modules. The
error was:
%s
""" % sys.exc_value
sys.exit(1)
# Each IPA server comes with this many entitlements
DEFAULT_ENTITLEMENTS = 25
class client(backend.Executioner):
"""
A simple-minded IPA client that can execute remote commands.
"""
def run(self, method, **kw):
self.create_context()
result = self.execute(method, **kw)
return result
def parse_options():
from optparse import OptionParser
parser = OptionParser()
parser.add_option("--debug", dest="debug", action="store_true",
default=False, help="enable debugging")
options, args = parser.parse_args()
return options, args
def check_compliance(tmpdir, debug=False):
cfg = dict(
context='cli',
in_server=False,
debug=debug,
verbose=0,
)
api.bootstrap(**cfg)
api.register(client)
api.finalize()
from ipalib.x509 import normalize_certificate, make_pem
try:
# Create a new credentials cache for this tool. This executes
# using the systems host principal.
ccache_file = 'FILE:%s/ccache' % tmpdir
krbcontext = krbV.default_context()
principal = str('host/%s@%s' % (api.env.host, api.env.realm))
keytab = krbV.Keytab(name='/etc/krb5.keytab', context=krbcontext)
principal = krbV.Principal(name=principal, context=krbcontext)
os.environ['KRB5CCNAME'] = ccache_file
ccache = krbV.CCache(name=ccache_file, context=krbcontext, primary_principal=principal)
ccache.init(principal)
ccache.init_creds_keytab(keytab=keytab, principal=principal)
except krbV.Krb5Error, e:
raise StandardError('Error initializing principal %s in %s: %s' % (principal.name, '/etc/krb5.keytab', str(e)))
# entitle-sync doesn't return any information we want to see, it just
# needs to be done so the LDAP data is correct.
try:
result = api.Backend.client.run('entitle_sync')
except errors.NotRegisteredError:
# Even if not registered they have some default entitlements
pass
conn = ldap2(shared_instance=False)
# Bind using GSSAPI
conn.connect(ccache=ccache_file)
hostcount = 0
# Get the hosts first
try:
(entries, truncated) = conn.find_entries('(krblastpwdchange=*)', [],
DN(api.env.container_host, api.env.basedn),
conn.SCOPE_ONELEVEL,
size_limit = -1)
except errors.NotFound:
# No hosts
pass
if not truncated:
hostcount = len(entries)
else:
# This will not happen unless we bump into a server-side limit.
msg = 'The host count result was truncated, they will be underreported'
syslog.syslog(syslog.LOG_ERR, msg)
if sys.stdin.isatty():
print msg
available = 0
try:
(entries, truncated) = conn.find_entries('(objectclass=ipaentitlement)',
['userCertificate'],
DN(api.env.container_entitlements, api.env.basedn),
conn.SCOPE_ONELEVEL,
size_limit = -1)
for entry in entries:
(dn, attrs) = entry
if 'usercertificate' in attrs:
rawcert = attrs['usercertificate'][0]
rawcert = normalize_certificate(rawcert)
cert = make_pem(base64.b64encode(rawcert))
cert = EntitlementCertificate(cert)
order = cert.getOrder()
available += int(order.getQuantityUsed())
except errors.NotFound:
pass
conn.disconnect()
available += DEFAULT_ENTITLEMENTS
if hostcount > available:
syslog.syslog(syslog.LOG_ERR, 'IPA is out of compliance: %d of %d entitlements used.' % (hostcount, available))
if sys.stdin.isatty():
print 'IPA is out of compliance: %d of %d entitlements used.' % (hostcount, available)
else:
if sys.stdin.isatty():
# If run from the command-line display some info
print 'IPA is in compliance: %d of %d entitlements used.' % (hostcount, available)
def main():
installutils.check_server_configuration()
if not os.path.exists('/etc/ipa/default.conf'):
return 0
options, args = parse_options()
try:
tmpdir = tempfile.mkdtemp(prefix = "tmp-")
try:
check_compliance(tmpdir, options.debug)
finally:
shutil.rmtree(tmpdir)
except KeyboardInterrupt:
return 1
except (StandardError, errors.PublicError), e:
syslog.syslog(syslog.LOG_ERR, 'IPA compliance checking failed: %s' % str(e))
if sys.stdin.isatty():
print 'IPA compliance checking failed: %s' % str(e)
return 1
return 0
try:
if not os.geteuid()==0:
sys.exit("\nMust be root to check compliance\n")
main()
except SystemExit, e:
sys.exit(e)
except RuntimeError, e:
sys.exit(e)
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