Rob Crittenden
766b534da0
We use kadmin.local to bootstrap the creation of the kerberos principals for the IPA server machine: host, HTTP and ldap. This works fine and has the side-effect of protecting the services from modification by an admin (which would likely break the server). Unfortunately this also means that the services can't be managed by useful utilities such as certmonger. So we have to create them as "real" services instead.
262 lines
8.3 KiB
Python
262 lines
8.3 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
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; version 2 only
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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, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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import logging, sys
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import os
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import tempfile
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from ipapython import sysrestore
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from ipapython import ipautil
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from ipalib import uuid, errors
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import ldap
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from ipaserver import ipaldap
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import base64
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def stop(service_name, instance_name=""):
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ipautil.run(["/sbin/service", service_name, "stop", instance_name])
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def start(service_name, instance_name=""):
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ipautil.run(["/sbin/service", service_name, "start", instance_name])
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def restart(service_name, instance_name=""):
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ipautil.run(["/sbin/service", service_name, "restart", instance_name])
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def is_running(service_name, instance_name=""):
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ret = True
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try:
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ipautil.run(["/sbin/service", service_name, "status", instance_name])
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except ipautil.CalledProcessError:
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ret = False
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return ret
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def chkconfig_on(service_name):
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ipautil.run(["/sbin/chkconfig", service_name, "on"])
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def chkconfig_off(service_name):
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ipautil.run(["/sbin/chkconfig", service_name, "off"])
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def chkconfig_add(service_name):
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ipautil.run(["/sbin/chkconfig", "--add", service_name])
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def chkconfig_del(service_name):
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ipautil.run(["/sbin/chkconfig", "--del", service_name])
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def is_enabled(service_name):
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(stdout, stderr, returncode) = ipautil.run(["/sbin/chkconfig", "--list", service_name])
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runlevels = {}
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for runlevel in range(0, 7):
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runlevels[runlevel] = False
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for line in stdout.split("\n"):
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parts = line.split()
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if parts[0] == service_name:
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for s in parts[1:]:
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(runlevel, status) = s.split(":")[0:2]
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try:
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runlevels[int(runlevel)] = status == "on"
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except ValueError:
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pass
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break
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return (runlevels[3] and runlevels[4] and runlevels[5])
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def print_msg(message, output_fd=sys.stdout):
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logging.debug(message)
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output_fd.write(message)
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output_fd.write("\n")
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class Service:
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def __init__(self, service_name, sstore=None, dm_password=None):
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self.service_name = 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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if sstore:
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self.sstore = sstore
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else:
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self.sstore = sysrestore.StateFile('/var/lib/ipa/sysrestore')
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def _ldap_mod(self, ldif, sub_dict = None):
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assert self.dm_password is not None
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fd = None
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path = ipautil.SHARE_DIR + ldif
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if sub_dict is not None:
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sub_dict['UUID'] = str(uuid.uuid1())
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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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[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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args = ["/usr/bin/ldapmodify", "-h", "127.0.0.1", "-xv",
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"-D", "cn=Directory Manager", "-y", pw_name, "-f", path]
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try:
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try:
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ipautil.run(args)
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except ipautil.CalledProcessError, e:
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logging.critical("Failed to load %s: %s" % (ldif, str(e)))
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finally:
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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 = "krbprincipalname=%s,cn=%s,cn=kerberos,%s" % (principal, self.realm, self.suffix)
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try:
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conn = ipaldap.IPAdmin("127.0.0.1")
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conn.simple_bind_s("cn=directory manager", self.dm_password)
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except Exception, e:
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logging.critical("Could not connect to the Directory Server on %s: %s" % (self.fqdn, str(e)))
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raise e
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try:
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entry = conn.getEntry(dn, ldap.SCOPE_BASE)
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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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conn.unbind()
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return
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newdn = "krbprincipalname=%s,cn=services,cn=accounts,%s" % (principal, self.suffix)
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conn.deleteEntry(dn)
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entry.dn = newdn
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classes = entry.getValues("objectclass")
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classes = classes + ["ipaobject", "ipaservice", "pkiuser"]
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entry.setValues("objectclass", list(set(classes)))
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entry.setValue("ipauniqueid", str(uuid.uuid1()))
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conn.addEntry(entry)
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conn.unbind()
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return newdn
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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 should be passed in DER format but we'll be nice and convert
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a base64-encoded cert if needed.
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"""
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try:
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self.dercert = base64.b64decode(self.dercert)
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except Exception:
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pass
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dn = "krbprincipalname=%s,cn=services,cn=accounts,%s" % (self.principal, self.suffix)
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try:
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conn = ipaldap.IPAdmin("127.0.0.1")
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conn.simple_bind_s("cn=directory manager", self.dm_password)
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except Exception, e:
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logging.critical("Could not connect to the Directory Server on %s: %s" % (self.fqdn, str(e)))
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raise e
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mod = [(ldap.MOD_ADD, 'userCertificate', self.dercert)]
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try:
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conn.modify_s(dn, mod)
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except Exception, e:
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logging.critical("Could not add certificate to service %s entry: %s" % (self.principal, str(e)))
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conn.unbind()
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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=""):
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stop(self.service_name, instance_name)
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def start(self, instance_name=""):
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start(self.service_name, instance_name)
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def restart(self, instance_name=""):
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restart(self.service_name, instance_name)
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def is_running(self):
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return is_running(self.service_name)
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def chkconfig_add(self):
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chkconfig_add(self.service_name)
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def chkconfig_del(self):
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chkconfig_del(self.service_name)
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def chkconfig_on(self):
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chkconfig_on(self.service_name)
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def chkconfig_off(self):
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chkconfig_off(self.service_name)
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def is_enabled(self):
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return is_enabled(self.service_name)
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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 print_msg(self, message):
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print_msg(message, self.output_fd)
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def step(self, message, method):
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self.steps.append((message, method))
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def start_creation(self, message):
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self.print_msg(message)
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step = 0
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for (message, method) in self.steps:
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self.print_msg(" [%d/%d]: %s" % (step+1, len(self.steps), message))
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method()
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step += 1
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self.print_msg("done configuring %s." % self.service_name)
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self.steps = []
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class SimpleServiceInstance(Service):
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def create_instance(self):
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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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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.chkconfig_add()
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self.backup_state("enabled", self.is_enabled())
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self.chkconfig_on()
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def uninstall(self):
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running = self.restore_state("running")
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enabled = not self.restore_state("enabled")
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if not running is None and not running:
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self.stop()
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if not enabled is None and not enabled:
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self.chkconfig_off()
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self.chkconfig_del()
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