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f866186239
Additional fix for: https://fedorahosted.org/freeipa/ticket/4499 Reviewed-By: Martin Kosek <mkosek@redhat.com>
517 lines
18 KiB
Python
517 lines
18 KiB
Python
# Authors: Karl MacMillan <kmacmillan@mentalrootkit.com>
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#
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# Copyright (C) 2007 Red Hat
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# see file 'COPYING' for use and warranty information
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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import sys
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import os, socket
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import tempfile
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import time
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import datetime
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import traceback
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from ipapython import sysrestore, ipautil, dogtag, ipaldap
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from ipapython.dn import DN
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from ipapython.ipa_log_manager import *
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from ipalib import errors, certstore
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from ipaplatform import services
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from ipaplatform.paths import paths
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# The service name as stored in cn=masters,cn=ipa,cn=etc. In the tuple
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# the first value is the *nix service name, the second the start order.
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SERVICE_LIST = {
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'KDC': ('krb5kdc', 10),
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'KPASSWD': ('kadmin', 20),
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'DNS': ('named', 30),
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'MEMCACHE': ('ipa_memcached', 39),
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'HTTP': ('httpd', 40),
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'CA': ('%sd' % dogtag.configured_constants().PKI_INSTANCE_NAME, 50),
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'ADTRUST': ('smb', 60),
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'EXTID': ('winbind', 70),
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'OTPD': ('ipa-otpd', 80),
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}
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def print_msg(message, output_fd=sys.stdout):
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root_logger.debug(message)
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output_fd.write(message)
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output_fd.write("\n")
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output_fd.flush()
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def format_seconds(seconds):
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"""Format a number of seconds as an English minutes+seconds message"""
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parts = []
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minutes, seconds = divmod(seconds, 60)
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if minutes:
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parts.append('%d minute' % minutes)
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if minutes != 1:
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parts[-1] += 's'
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if seconds or not minutes:
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parts.append('%d second' % seconds)
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if seconds != 1:
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parts[-1] += 's'
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return ' '.join(parts)
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class Service(object):
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def __init__(self, service_name, service_desc=None, sstore=None, dm_password=None, ldapi=True,
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autobind=ipaldap.AUTOBIND_AUTO):
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self.service_name = service_name
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self.service_desc = service_desc
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self.service = services.service(service_name)
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self.steps = []
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self.output_fd = sys.stdout
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self.dm_password = dm_password
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self.ldapi = ldapi
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self.autobind = autobind
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self.fqdn = socket.gethostname()
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self.admin_conn = None
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if sstore:
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self.sstore = sstore
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else:
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self.sstore = sysrestore.StateFile(paths.SYSRESTORE)
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self.realm = None
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self.suffix = DN()
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self.principal = None
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self.dercert = None
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def ldap_connect(self):
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# If DM password is provided, we use it
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# If autobind was requested, attempt autobind when root and ldapi
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# If autobind was disabled or not succeeded, go with GSSAPI
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# LDAPI can be used with either autobind or GSSAPI
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# LDAPI requires realm to be set
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try:
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if self.ldapi:
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if not self.realm:
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raise errors.NotFound(reason="realm is missing for %s" % (self))
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conn = ipaldap.IPAdmin(ldapi=self.ldapi, realm=self.realm)
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else:
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conn = ipaldap.IPAdmin(self.fqdn, port=389)
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conn.do_bind(self.dm_password, autobind=self.autobind)
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except Exception, e:
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root_logger.debug("Could not connect to the Directory Server on %s: %s" % (self.fqdn, str(e)))
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raise
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self.admin_conn = conn
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def ldap_disconnect(self):
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self.admin_conn.unbind()
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self.admin_conn = None
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def _ldap_mod(self, ldif, sub_dict=None):
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pw_name = None
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fd = None
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path = ipautil.SHARE_DIR + ldif
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nologlist = []
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if sub_dict is not None:
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txt = ipautil.template_file(path, sub_dict)
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fd = ipautil.write_tmp_file(txt)
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path = fd.name
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# do not log passwords
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if 'PASSWORD' in sub_dict:
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nologlist.append(sub_dict['PASSWORD'])
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if 'RANDOM_PASSWORD' in sub_dict:
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nologlist.append(sub_dict['RANDOM_PASSWORD'])
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args = [paths.LDAPMODIFY, "-v", "-f", path]
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# As we always connect to the local host,
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# use URI of admin connection
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if not self.admin_conn:
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self.ldap_connect()
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args += ["-H", self.admin_conn.ldap_uri]
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# If DM password is available, use it
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if self.dm_password:
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[pw_fd, pw_name] = tempfile.mkstemp()
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os.write(pw_fd, self.dm_password)
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os.close(pw_fd)
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auth_parms = ["-x", "-D", "cn=Directory Manager", "-y", pw_name]
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# Use GSSAPI auth when not using DM password or not being root
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elif os.getegid() != 0:
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auth_parms = ["-Y", "GSSAPI"]
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# Default to EXTERNAL auth mechanism
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else:
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auth_parms = ["-Y", "EXTERNAL"]
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args += auth_parms
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try:
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try:
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ipautil.run(args, nolog=nologlist)
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except ipautil.CalledProcessError, e:
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root_logger.critical("Failed to load %s: %s" % (ldif, str(e)))
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finally:
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if pw_name:
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os.remove(pw_name)
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if fd is not None:
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fd.close()
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def move_service(self, principal):
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"""
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Used to move a principal entry created by kadmin.local from
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cn=kerberos to cn=services
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"""
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dn = DN(('krbprincipalname', principal), ('cn', self.realm), ('cn', 'kerberos'), self.suffix)
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try:
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entry = self.admin_conn.get_entry(dn)
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except errors.NotFound:
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# There is no service in the wrong location, nothing to do.
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# This can happen when installing a replica
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return None
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newdn = DN(('krbprincipalname', principal), ('cn', 'services'), ('cn', 'accounts'), self.suffix)
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hostdn = DN(('fqdn', self.fqdn), ('cn', 'computers'), ('cn', 'accounts'), self.suffix)
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self.admin_conn.delete_entry(entry)
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entry.dn = newdn
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classes = entry.get("objectclass")
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classes = classes + ["ipaobject", "ipaservice", "pkiuser"]
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entry["objectclass"] = list(set(classes))
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entry["ipauniqueid"] = ['autogenerate']
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entry["managedby"] = [hostdn]
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self.admin_conn.add_entry(entry)
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return newdn
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def add_simple_service(self, principal):
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"""
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Add a very basic IPA service.
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The principal needs to be fully-formed: service/host@REALM
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"""
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if not self.admin_conn:
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self.ldap_connect()
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dn = DN(('krbprincipalname', principal), ('cn', 'services'), ('cn', 'accounts'), self.suffix)
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hostdn = DN(('fqdn', self.fqdn), ('cn', 'computers'), ('cn', 'accounts'), self.suffix)
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entry = self.admin_conn.make_entry(
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dn,
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objectclass=[
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"krbprincipal", "krbprincipalaux", "krbticketpolicyaux",
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"ipaobject", "ipaservice", "pkiuser"],
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krbprincipalname=[principal],
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ipauniqueid=['autogenerate'],
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managedby=[hostdn],
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)
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self.admin_conn.add_entry(entry)
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return dn
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def add_cert_to_service(self):
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"""
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Add a certificate to a service
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This server cert should be in DER format.
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"""
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# add_cert_to_service() is relatively rare operation
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# we actually call it twice during ipa-server-install, for different
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# instances: ds and cs. Unfortunately, it may happen that admin
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# connection was created well before add_cert_to_service() is called
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# If there are other operations in between, it will become stale and
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# since we are using SimpleLDAPObject, not ReconnectLDAPObject, the
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# action will fail. Thus, explicitly disconnect and connect again.
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# Using ReconnectLDAPObject instead of SimpleLDAPObject was considered
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# but consequences for other parts of the framework are largely
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# unknown.
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if self.admin_conn:
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self.ldap_disconnect()
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self.ldap_connect()
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dn = DN(('krbprincipalname', self.principal), ('cn', 'services'),
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('cn', 'accounts'), self.suffix)
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entry = self.admin_conn.get_entry(dn)
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entry.setdefault('userCertificate', []).append(self.dercert)
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try:
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self.admin_conn.update_entry(entry)
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except Exception, e:
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root_logger.critical("Could not add certificate to service %s entry: %s" % (self.principal, str(e)))
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def import_ca_certs(self, db, ca_is_configured, conn=None):
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if conn is None:
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if not self.admin_conn:
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self.ldap_connect()
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conn = self.admin_conn
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try:
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ca_certs = certstore.get_ca_certs_nss(
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conn, self.suffix, self.realm, ca_is_configured)
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except errors.NotFound:
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pass
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else:
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for cert, nickname, trust_flags in ca_certs:
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db.add_cert(cert, nickname, trust_flags)
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def is_configured(self):
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return self.sstore.has_state(self.service_name)
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def set_output(self, fd):
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self.output_fd = fd
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def stop(self, instance_name="", capture_output=True):
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self.service.stop(instance_name, capture_output=capture_output)
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def start(self, instance_name="", capture_output=True, wait=True):
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self.service.start(instance_name, capture_output=capture_output, wait=wait)
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def restart(self, instance_name="", capture_output=True, wait=True):
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self.service.restart(instance_name, capture_output=capture_output, wait=wait)
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def is_running(self):
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return self.service.is_running()
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def install(self):
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self.service.install()
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def remove(self):
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self.service.remove()
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def enable(self):
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self.service.enable()
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def disable(self):
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self.service.disable()
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def is_enabled(self):
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return self.service.is_enabled()
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def backup_state(self, key, value):
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self.sstore.backup_state(self.service_name, key, value)
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def restore_state(self, key):
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return self.sstore.restore_state(self.service_name, key)
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def get_state(self, key):
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return self.sstore.get_state(self.service_name, key)
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def print_msg(self, message):
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print_msg(message, self.output_fd)
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def step(self, message, method, run_after_failure=False):
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self.steps.append((message, method, run_after_failure))
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def start_creation(self, start_message=None, end_message=None,
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show_service_name=True, runtime=-1):
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"""
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Starts creation of the service.
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Use start_message and end_message for explicit messages
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at the beggining / end of the process. Otherwise they are generated
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using the service description (or service name, if the description has
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not been provided).
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Use show_service_name to include service name in generated descriptions.
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"""
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if start_message is None:
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# no other info than mandatory service_name provided, use that
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if self.service_desc is None:
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start_message = "Configuring %s" % self.service_name
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# description should be more accurate than service name
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else:
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start_message = "Configuring %s" % self.service_desc
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if show_service_name:
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start_message = "%s (%s)" % (start_message, self.service_name)
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if end_message is None:
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if self.service_desc is None:
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if show_service_name:
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end_message = "Done configuring %s." % self.service_name
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else:
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end_message = "Done."
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else:
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if show_service_name:
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end_message = "Done configuring %s (%s)." % (
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self.service_desc, self.service_name)
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else:
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end_message = "Done configuring %s." % self.service_desc
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if runtime > 0:
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self.print_msg('%s: Estimated time %s' % (start_message,
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format_seconds(runtime)))
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else:
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self.print_msg(start_message)
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def run_step(message, method):
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self.print_msg(message)
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s = datetime.datetime.now()
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method()
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e = datetime.datetime.now()
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d = e - s
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root_logger.debug(" duration: %d seconds" % d.seconds)
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step = 0
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steps_iter = iter(self.steps)
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try:
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for message, method, run_after_failure in steps_iter:
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full_msg = " [%d/%d]: %s" % (step+1, len(self.steps), message)
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run_step(full_msg, method)
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step += 1
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except BaseException as e:
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if not (isinstance(e, SystemExit) and e.code == 0):
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# show the traceback, so it's not lost if cleanup method fails
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root_logger.debug("%s" % traceback.format_exc())
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self.print_msg(' [error] %s: %s' % (type(e).__name__, e))
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# run through remaining methods marked run_after_failure
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for message, method, run_after_failure in steps_iter:
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if run_after_failure:
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run_step(" [cleanup]: %s" % message, method)
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raise
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self.print_msg(end_message)
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self.steps = []
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def ldap_enable(self, name, fqdn, dm_password, ldap_suffix, config=[]):
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assert isinstance(ldap_suffix, DN)
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self.disable()
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if not self.admin_conn:
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self.ldap_connect()
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entry_name = DN(('cn', name), ('cn', fqdn), ('cn', 'masters'), ('cn', 'ipa'), ('cn', 'etc'), ldap_suffix)
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# enable disabled service
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try:
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entry = self.admin_conn.get_entry(entry_name, ['ipaConfigString'])
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except errors.NotFound:
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pass
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else:
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if any(u'enabledservice' == val.lower()
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for val in entry.get('ipaConfigString', [])):
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root_logger.debug("service %s startup entry already enabled", name)
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return
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entry.setdefault('ipaConfigString', []).append(u'enabledService')
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try:
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self.admin_conn.update_entry(entry)
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except errors.EmptyModlist:
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root_logger.debug("service %s startup entry already enabled", name)
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return
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except:
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root_logger.debug("failed to enable service %s startup entry", name)
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raise
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root_logger.debug("service %s startup entry enabled", name)
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return
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order = SERVICE_LIST[name][1]
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entry = self.admin_conn.make_entry(
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entry_name,
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objectclass=["nsContainer", "ipaConfigObject"],
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cn=[name],
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ipaconfigstring=[
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"enabledService", "startOrder " + str(order)] + config,
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)
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try:
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self.admin_conn.add_entry(entry)
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except (errors.DuplicateEntry), e:
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root_logger.debug("failed to add service %s startup entry", name)
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raise e
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def ldap_disable(self, name, fqdn, ldap_suffix):
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assert isinstance(ldap_suffix, DN)
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if not self.admin_conn:
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self.ldap_connect()
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entry_dn = DN(('cn', name), ('cn', fqdn), ('cn', 'masters'),
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('cn', 'ipa'), ('cn', 'etc'), ldap_suffix)
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search_kw = {'ipaConfigString': u'enabledService'}
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filter = self.admin_conn.make_filter(search_kw)
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try:
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entries, truncated = self.admin_conn.find_entries(
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filter=filter,
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attrs_list=['ipaConfigString'],
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base_dn=entry_dn,
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scope=self.admin_conn.SCOPE_BASE)
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except errors.NotFound:
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root_logger.debug("service %s startup entry already disabled", name)
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return
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assert len(entries) == 1 # only one entry is expected
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entry = entries[0]
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# case insensitive
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for value in entry.get('ipaConfigString', []):
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if value.lower() == u'enabledservice':
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entry['ipaConfigString'].remove(value)
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break
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try:
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self.admin_conn.update_entry(entry)
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except errors.EmptyModlist:
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pass
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except:
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root_logger.debug("failed to disable service %s startup entry", name)
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raise
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root_logger.debug("service %s startup entry disabled", name)
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class SimpleServiceInstance(Service):
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def create_instance(self, gensvc_name=None, fqdn=None, dm_password=None, ldap_suffix=None, realm=None):
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self.gensvc_name = gensvc_name
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self.fqdn = fqdn
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self.dm_password = dm_password
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self.suffix = ldap_suffix
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self.realm = realm
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if not realm:
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self.ldapi = False
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self.step("starting %s " % self.service_name, self.__start)
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self.step("configuring %s to start on boot" % self.service_name, self.__enable)
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self.start_creation("Configuring %s" % self.service_name)
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suffix = ipautil.dn_attribute_property('_ldap_suffix')
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def __start(self):
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self.backup_state("running", self.is_running())
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self.restart()
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def __enable(self):
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self.enable()
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self.backup_state("enabled", self.is_enabled())
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|
if self.gensvc_name == None:
|
|
self.enable()
|
|
else:
|
|
self.ldap_enable(self.gensvc_name, self.fqdn,
|
|
self.dm_password, self.suffix)
|
|
|
|
def uninstall(self):
|
|
if self.is_configured():
|
|
self.print_msg("Unconfiguring %s" % self.service_name)
|
|
|
|
running = self.restore_state("running")
|
|
enabled = not self.restore_state("enabled")
|
|
|
|
if not running is None and not running:
|
|
self.stop()
|
|
if not enabled is None and not enabled:
|
|
self.disable()
|
|
self.remove()
|