mirror of
https://salsa.debian.org/freeipa-team/freeipa.git
synced 2025-01-28 09:06:44 -06:00
1d635090cb
When using the dogtag CA we can control what the subject of an issued certificate is regardless of what is in the CSR, we just use the CN value. The selfsign CA does not have this capability. The subject format must match the configured format or certificate requests are rejected. The default format is CN=%s,O=IPA. certmonger by default issues requests with just CN so all requests would fail if using the selfsign CA. This subject base is stored in cn=ipaconfig so we can just fetch that value in the enrollment process and pass it to certmonger to request the right thing. Note that this also fixes ipa-join to work with the new argument passing mechanism.
604 lines
24 KiB
Python
604 lines
24 KiB
Python
#! /usr/bin/python -E
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# Authors: Simo Sorce <ssorce@redhat.com>
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# 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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try:
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import sys
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import os
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import krbV
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import socket
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import logging
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import tempfile
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import getpass
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from optparse import OptionParser
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import ipaclient.ipadiscovery
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import ipaclient.ipachangeconf
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import ipaclient.ntpconf
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from ipapython.ipautil import run, user_input
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from ipapython import sysrestore
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from ipapython import version
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import SSSDConfig
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except ImportError:
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print >> sys.stderr, """\
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There was a problem importing one of the required Python modules. The
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error was:
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%s
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""" % sys.exc_value
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sys.exit(1)
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def parse_options():
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parser = OptionParser(version=version.VERSION)
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parser.add_option("--domain", dest="domain", help="domain name")
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parser.add_option("--server", dest="server", help="IPA server")
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parser.add_option("--realm", dest="realm_name", help="realm name")
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parser.add_option("-f", "--force", dest="force", action="store_true",
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default=False, help="force setting of ldap/kerberos conf")
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parser.add_option("-d", "--debug", dest="debug", action="store_true",
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default=False, help="print debugging information")
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parser.add_option("-U", "--unattended", dest="unattended",
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action="store_true",
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help="unattended installation never prompts the user")
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parser.add_option("--ntp-server", dest="ntp_server", help="ntp server to use")
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parser.add_option("-S", "--no-sssd", action="store_false",
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help="do not configure sssd", default=True, dest="sssd")
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parser.add_option("-N", "--no-ntp", action="store_false",
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help="do not configure ntp", default=True, dest="conf_ntp")
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parser.add_option("-w", "--password", dest="password",
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help="password to join the IPA realm"),
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parser.add_option("-W", dest="prompt_password", action="store_true",
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default=False,
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help="Prompt for a password to join the IPA realm"),
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parser.add_option("-p", "--principal", dest="principal",
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help="principal to use to join the IPA realm"),
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parser.add_option("--on-master", dest="on_master", action="store_true",
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help="use this option when run on a master", default=False)
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parser.add_option("--permit", dest="permit", action="store_true",
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help="disable access rules by default, permit all access.", default=False)
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parser.add_option("--mkhomedir", dest="mkhomedir", action="store_true",
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help="create home directories for users on their first login", default=False)
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parser.add_option("", "--uninstall", dest="uninstall", action="store_true",
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default=False, help="uninstall an existing installation")
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options, args = parser.parse_args()
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if (options.server and not options.domain):
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parser.error("--server cannot be used without providing --domain")
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return options
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def logging_setup(options):
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# Always log everything (i.e., DEBUG) to the log
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# file.
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log_file = "/var/log/ipaclient-install.log"
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if options.uninstall:
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log_file = "/var/log/ipaclient-uninstall.log"
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old_umask = os.umask(077)
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logging.basicConfig(level=logging.DEBUG,
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format='%(asctime)s %(levelname)s %(message)s',
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filename=log_file,
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filemode='w')
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os.umask(old_umask)
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console = logging.StreamHandler()
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# If the debug option is set, also log debug messages to the console
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if options.debug:
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console.setLevel(logging.DEBUG)
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else:
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# Otherwise, log critical and error messages
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console.setLevel(logging.ERROR)
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formatter = logging.Formatter('%(name)-12s: %(levelname)-8s %(message)s')
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console.setFormatter(formatter)
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logging.getLogger('').addHandler(console)
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def uninstall(options):
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print "Restoring client configuration files"
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fstore.restore_all_files()
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# Remove our host cert
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try:
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run(["/usr/bin/ipa-getcert", "stop-tracking", "-d", "/etc/pki/nssdb", "-n", "Server-Cert"])
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run(["/usr/bin/certutil", "-D", "-d", "/etc/pki/nssdb", "-n", "Server-Cert"])
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except Exception, e:
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print "Failed to remove Server-Cert from /etc/pki/nssdb: %s" % str(e)
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try:
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run(["/sbin/service", "certmonger", "stop"])
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except:
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print "Failed to stop the certmonger daemon"
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try:
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run(["/sbin/chkconfig", "certmonger", "off"])
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except:
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print "Failed to disable automatic startup of the certmonger daemon"
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print "Disabling client Kerberos and Ldap configurations"
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try:
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run(["/usr/sbin/authconfig", "--disableldap", "--disablekrb5", "--disablesssd", "--disablesssdauth", "--disablemkhomedir", "--update"])
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except Exception, e:
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print "Failed to remove krb5/ldap configuration. " +str(e)
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sys.exit(1)
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print "Removing Kerberos service principals from /etc/krb5.keytab"
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try:
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run(["/sbin/service", "nscd", "restart"])
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except:
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print "Failed to restart start the NSCD daemon"
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try:
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ctx = krbV.default_context()
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run(["/usr/sbin/ipa-rmkeytab", "-k", "/etc/krb5.keytab", "-r", ctx.default_realm])
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except:
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print "Failed to clean up /etc/krb5.keytab"
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if not options.unattended:
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print "The original nsswitch.conf configuration has been restored."
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print "You may need to restart services or reboot the machine."
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if not options.on_master:
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if user_input("Do you want to reboot the machine?", False):
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try:
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run(["/usr/bin/reboot"])
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except Exception, e:
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print "Reboot command failed to exceute. " + str(e)
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sys.exit(1)
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# Remove the IPA configuration file
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try:
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os.remove("/etc/ipa/default.conf")
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except:
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pass
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def configure_ipa_conf(fstore, cli_basedn, cli_realm, cli_domain, cli_server):
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ipaconf = ipaclient.ipachangeconf.IPAChangeConf("IPA Installer")
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ipaconf.setOptionAssignment(" = ")
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ipaconf.setSectionNameDelimiters(("[","]"))
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opts = [{'name':'comment', 'type':'comment', 'value':'File modified by ipa-client-install'},
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{'name':'empty', 'type':'empty'}]
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#[global]
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defopts = [{'name':'basedn', 'type':'option', 'value':cli_basedn},
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{'name':'realm', 'type':'option', 'value':cli_realm},
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{'name':'domain', 'type':'option', 'value':cli_domain},
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{'name':'server', 'type':'option', 'value':cli_server},
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{'name':'xmlrpc_uri', 'type':'option', 'value':'https://%s/ipa/xml' % cli_server}]
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opts.append({'name':'global', 'type':'section', 'value':defopts})
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opts.append({'name':'empty', 'type':'empty'})
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fstore.backup_file("/etc/ipa/default.conf")
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ipaconf.newConf("/etc/ipa/default.conf", opts)
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return 0
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def configure_ldap_conf(fstore, cli_basedn, cli_realm, cli_domain, cli_server, dnsok, options):
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ldapconf = ipaclient.ipachangeconf.IPAChangeConf("IPA Installer")
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ldapconf.setOptionAssignment(" ")
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opts = [{'name':'comment', 'type':'comment', 'value':'File modified by ipa-client-install'},
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{'name':'empty', 'type':'empty'},
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{'name':'ldap_version', 'type':'option', 'value':'3'},
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{'name':'base', 'type':'option', 'value':cli_basedn},
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{'name':'empty', 'type':'empty'},
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{'name':'nss_base_passwd', 'type':'option', 'value':'cn=users,cn=accounts,'+cli_basedn+'?sub'},
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{'name':'nss_base_group', 'type':'option', 'value':'cn=groups,cn=accounts,'+cli_basedn+'?sub'},
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{'name':'nss_schema', 'type':'option', 'value':'rfc2307bis'},
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{'name':'nss_map_attribute', 'type':'option', 'value':'uniqueMember member'},
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{'name':'nss_initgroups_ignoreusers', 'type':'option', 'value':'root,dirsrv'},
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{'name':'empty', 'type':'empty'},
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{'name':'nss_reconnect_maxsleeptime', 'type':'option', 'value':'8'},
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{'name':'nss_reconnect_sleeptime', 'type':'option', 'value':'1'},
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{'name':'bind_timelimit', 'type':'option', 'value':'5'},
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{'name':'timelimit', 'type':'option', 'value':'15'},
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{'name':'empty', 'type':'empty'}]
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if not dnsok or options.force or options.on_master:
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if options.on_master:
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opts.append({'name':'uri', 'type':'option', 'value':'ldap://localhost'})
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else:
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opts.append({'name':'uri', 'type':'option', 'value':'ldap://'+cli_server})
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else:
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opts.append({'name':'nss_srv_domain', 'type':'option', 'value':cli_domain})
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opts.append({'name':'empty', 'type':'empty'})
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try:
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fstore.backup_file("/etc/ldap.conf")
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ldapconf.newConf("/etc/ldap.conf", opts)
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except Exception, e:
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print "Creation of /etc/ldap.conf: " + str(e)
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return 1
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return 0
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def hardcode_ldap_server(cli_server):
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"""
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DNS Discovery didn't return a valid IPA server, hardcode a value into
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the file instead.
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"""
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ldapconf = ipaclient.ipachangeconf.IPAChangeConf("IPA Installer")
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ldapconf.setOptionAssignment(" ")
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opts = [{'name':'uri', 'type':'option', 'action':'set', 'value':'ldap://'+cli_server},
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{'name':'empty', 'type':'empty'}]
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# Errors raised by this should be caught by the caller
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ldapconf.changeConf("/etc/ldap.conf", opts)
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return
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def configure_krb5_conf(fstore, cli_basedn, cli_realm, cli_domain, cli_server, dnsok, options, filename):
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krbconf = ipaclient.ipachangeconf.IPAChangeConf("IPA Installer")
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krbconf.setOptionAssignment(" = ")
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krbconf.setSectionNameDelimiters(("[","]"))
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krbconf.setSubSectionDelimiters(("{","}"))
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krbconf.setIndent((""," "," "))
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opts = [{'name':'comment', 'type':'comment', 'value':'File modified by ipa-client-install'},
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{'name':'empty', 'type':'empty'}]
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#[libdefaults]
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libopts = [{'name':'default_realm', 'type':'option', 'value':cli_realm}]
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if not dnsok or options.force:
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libopts.append({'name':'dns_lookup_realm', 'type':'option', 'value':'false'})
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libopts.append({'name':'dns_lookup_kdc', 'type':'option', 'value':'false'})
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else:
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libopts.append({'name':'dns_lookup_realm', 'type':'option', 'value':'true'})
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libopts.append({'name':'dns_lookup_kdc', 'type':'option', 'value':'true'})
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libopts.append({'name':'ticket_lifetime', 'type':'option', 'value':'24h'})
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libopts.append({'name':'forwardable', 'type':'option', 'value':'yes'})
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opts.append({'name':'libdefaults', 'type':'section', 'value':libopts})
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opts.append({'name':'empty', 'type':'empty'})
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#the following are necessary only if DNS discovery does not work
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if not dnsok or options.force:
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#[realms]
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kropts =[{'name':'kdc', 'type':'option', 'value':cli_server+':88'},
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{'name':'admin_server', 'type':'option', 'value':cli_server+':749'},
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{'name':'default_domain', 'type':'option', 'value':cli_domain}]
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ropts = [{'name':cli_realm, 'type':'subsection', 'value':kropts}]
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opts.append({'name':'realms', 'type':'section', 'value':ropts})
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opts.append({'name':'empty', 'type':'empty'})
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#[domain_realm]
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dropts = [{'name':'.'+cli_domain, 'type':'option', 'value':cli_realm},
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{'name':cli_domain, 'type':'option', 'value':cli_realm}]
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opts.append({'name':'domain_realm', 'type':'section', 'value':dropts})
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opts.append({'name':'empty', 'type':'empty'})
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#[appdefaults]
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pamopts = [{'name':'debug', 'type':'option', 'value':'false'},
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{'name':'ticket_lifetime', 'type':'option', 'value':'36000'},
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{'name':'renew_lifetime', 'type':'option', 'value':'36000'},
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{'name':'forwardable', 'type':'option', 'value':'true'},
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{'name':'krb4_convert', 'type':'option', 'value':'false'}]
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appopts = [{'name':'pam', 'type':'subsection', 'value':pamopts}]
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opts.append({'name':'appdefaults', 'type':'section', 'value':appopts})
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krbconf.newConf(filename, opts);
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return 0
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def configure_certmonger(fstore, subject_base, cli_realm, options):
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started = True
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try:
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run(["/sbin/service", "certmonger", "restart"])
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except:
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print "Failed to start the certmonger daemon"
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print "Automatic certificate management will not be available"
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started = False
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try:
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run(["/sbin/chkconfig", "certmonger", "on"])
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except:
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print "Failed to configure automatic startup of the certmonger daemon"
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print "Automatic certificate management will not be available"
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# Request our host cert
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if started:
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subject = 'CN=%s,%s' % (socket.getfqdn(), subject_base)
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principal = 'host/%s@%s' % (socket.getfqdn(), cli_realm)
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try:
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run(["ipa-getcert", "request", "-d", "/etc/pki/nssdb", "-n", "Server-Cert", "-N", subject, "-K", principal])
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except:
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print "certmonger request for host certificate failed"
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def configure_sssd_conf(fstore, cli_domain, cli_server, options):
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fstore.backup_file("/etc/sssd/sssd.conf")
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sssdconfig = SSSDConfig.SSSDConfig()
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sssdconfig.new_config()
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domain = sssdconfig.new_domain(cli_domain)
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domain.add_provider('ipa', 'id')
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domain.set_option('ipa_server', cli_server)
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domain.set_option('ipa_domain', cli_domain)
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# Might need this if /bin/hostname doesn't return a FQDN
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#domain.set_option('ipa_hostname', 'client.example.com')
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domain.add_provider('ipa', 'auth')
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domain.add_provider('ipa', 'chpass')
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if not options.permit:
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domain.add_provider('ipa', 'access')
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else:
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domain.add_provider('permit', 'access')
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domain.set_option('cache_credentials', True)
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domain.set_active(True)
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sssdconfig.save_domain(domain)
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sssdconfig.write("/etc/sssd/sssd.conf")
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return 0
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def main():
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options = parse_options()
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logging_setup(options)
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dnsok = True
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global fstore
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fstore = sysrestore.FileStore('/var/lib/ipa-client/sysrestore')
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if options.uninstall:
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return uninstall(options)
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cli_domain = None
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cli_server = None
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cli_realm = None
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cli_basedn = None
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subject_base = "O=IPA"
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if options.unattended and (options.password is None and options.principal is None and options.prompt_password is False) and not options.on_master:
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print "One of password and principal are required."
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return 1
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# Create the discovery instance
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ds = ipaclient.ipadiscovery.IPADiscovery()
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ret = ds.search(domain=options.domain, server=options.server)
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if ret == -10:
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print "Can't get the fully qualified name of this host"
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print "Please check that the client is properly configured"
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return ret
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if ret == -1 or not ds.getDomainName():
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logging.debug("Domain not found")
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if options.domain:
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cli_domain = options.domain
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elif options.unattended:
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return ret
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else:
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print "DNS discovery failed to determine your DNS domain"
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cli_domain = user_input("Please provide the domain name of your IPA server (ex: example.com)", allow_empty = False)
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ret = ds.search(domain=cli_domain, server=options.server)
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if not cli_domain:
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if ds.getDomainName():
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cli_domain = ds.getDomainName()
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if ret == -2 or not ds.getServerName():
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dnsok = False
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logging.debug("IPA Server not found")
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if options.server:
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cli_server = options.server
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elif options.unattended:
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return ret
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else:
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print "DNS discovery failed to find the IPA Server"
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cli_server = user_input("Please provide your IPA server name (ex: ipa.example.com)", allow_empty = False)
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ret = ds.search(domain=cli_domain, server=cli_server)
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if not cli_server:
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if ds.getServerName():
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cli_server = ds.getServerName()
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if ret != 0:
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print "Failed to verify that "+cli_server+" is an IPA Server."
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print "This may mean that the remote server is not up or is not reachable"
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print "due to network or firewall settings."
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return ret
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if dnsok:
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print "Discovery was successful!"
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elif not options.unattended:
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print "\nThe failure to use DNS to find your IPA server indicates that your"
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print "resolv.conf file is not properly configured.\n"
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print "Autodiscovery of servers for failover cannot work with this configuration.\n"
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print "If you proceed with the installation, services will be configured to always"
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print "access the discovered server for all operation and will not fail over to"
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print "other servers in case of failure.\n"
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if not user_input("Do you want to proceed and configure the system with fixed values with no DNS discovery?", False):
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|
return ret
|
|
|
|
if options.realm_name and options.realm_name != ds.getRealmName():
|
|
if not options.unattended:
|
|
print "ERROR: The provided realm name: ["+options.realm_name+"] does not match with the discovered one: ["+ds.getRealmName()+"]\n"
|
|
return -3
|
|
|
|
cli_realm = ds.getRealmName()
|
|
cli_basedn = ds.getBaseDN()
|
|
|
|
print "Realm: "+cli_realm
|
|
print "DNS Domain: "+cli_domain
|
|
print "IPA Server: "+cli_server
|
|
print "BaseDN: "+cli_basedn
|
|
|
|
print "\n"
|
|
if not options.unattended and not user_input("Continue to configure the system with these values?", False):
|
|
return 1
|
|
|
|
if not options.unattended:
|
|
if options.principal is None and options.password is None and options.prompt_password is False:
|
|
options.principal = user_input("Principal", allow_empty=False)
|
|
|
|
if not options.on_master:
|
|
# First test out the kerberos configuration
|
|
try:
|
|
(krb_fd, krb_name) = tempfile.mkstemp()
|
|
os.close(krb_fd)
|
|
if configure_krb5_conf(fstore, cli_basedn, cli_realm, cli_domain, cli_server, dnsok, options, krb_name):
|
|
print "Test kerberos configuration failed"
|
|
return 1
|
|
os.environ['KRB5_CONFIG'] = krb_name
|
|
join_args = ["/usr/sbin/ipa-join", "-s", cli_server]
|
|
if options.debug:
|
|
join_args.append("-d")
|
|
if options.principal is not None:
|
|
principal = options.principal
|
|
if principal.find('@') == -1:
|
|
principal = '%s@%s' % (principal, cli_realm)
|
|
print "Password for %s: " % principal,
|
|
sys.stdout.flush()
|
|
(stderr, stdout, returncode) = run(["/usr/kerberos/bin/kinit", principal], raiseonerr=False)
|
|
print ""
|
|
if returncode != 0:
|
|
print stdout
|
|
return 1
|
|
elif options.password:
|
|
join_args.append("-w")
|
|
join_args.append(options.password)
|
|
elif options.prompt_password:
|
|
password = getpass.getpass("Password: ")
|
|
join_args.append("-w")
|
|
join_args.append(password)
|
|
|
|
# Now join the domain
|
|
(stdout, stderr, returncode) = run(join_args, raiseonerr=False)
|
|
|
|
if returncode != 0:
|
|
print "Joining realm failed: %s" % stderr,
|
|
if not options.force:
|
|
return 1
|
|
print " Use ipa-getkeytab to obtain a host principal for this server."
|
|
|
|
start = stderr.find('Certificate subject base is: ')
|
|
if start >= 0:
|
|
start = start + 29
|
|
subject_base = stderr[start:]
|
|
subject_base = subject_base.strip()
|
|
|
|
finally:
|
|
if options.principal is not None:
|
|
(stderr, stdout, returncode) = run(["/usr/kerberos/bin/kdestroy"], raiseonerr=False)
|
|
del os.environ['KRB5_CONFIG']
|
|
os.remove(krb_name)
|
|
os.remove(krb_name + ".ipabkp")
|
|
|
|
# Configure ipa.conf
|
|
if not options.on_master:
|
|
configure_ipa_conf(fstore, cli_basedn, cli_realm, cli_domain, cli_server)
|
|
print "Created /etc/ipa/default.conf"
|
|
|
|
if options.sssd:
|
|
if configure_sssd_conf(fstore, cli_domain, cli_server, options):
|
|
return 1
|
|
print "Configured /etc/sssd/sssd.conf"
|
|
else:
|
|
if configure_ldap_conf(fstore, cli_basedn, cli_realm, cli_domain, cli_server, dnsok, options):
|
|
return 1
|
|
print "Configured /etc/ldap.conf"
|
|
|
|
if not options.on_master:
|
|
configure_certmonger(fstore, subject_base, cli_realm, options)
|
|
|
|
# If on master assume kerberos is already configured properly.
|
|
if not options.on_master:
|
|
# Configure krb5.conf
|
|
fstore.backup_file("/etc/krb5.conf")
|
|
if configure_krb5_conf(fstore, cli_basedn, cli_realm, cli_domain, cli_server, dnsok, options, "/etc/krb5.conf"):
|
|
return 1
|
|
|
|
print "Configured /etc/krb5.conf for IPA realm " + cli_realm
|
|
|
|
# Modify nsswitch/pam stack
|
|
if options.sssd:
|
|
cmd = ["/usr/sbin/authconfig", "--enablesssd", "--enablesssdauth", "--update"]
|
|
message = "SSSD enabled"
|
|
else:
|
|
cmd = ["/usr/sbin/authconfig", "--enableldap", "--update"]
|
|
message = "LDAP enabled"
|
|
|
|
if options.mkhomedir:
|
|
cmd.append("--enablemkhomedir")
|
|
run(cmd)
|
|
print message
|
|
|
|
#Check nss_ldap is working properly
|
|
if not options.on_master:
|
|
try:
|
|
run(["getent", "passwd", "admin"])
|
|
except Exception, e:
|
|
print "nss_ldap is not able to use DNS discovery!"
|
|
print "Changing configuration to use hardcoded server name: " +cli_server
|
|
|
|
try:
|
|
hardcode_ldap_server(cli_server)
|
|
except Exception, e:
|
|
print "Adding hardcoded server name to /etc/ldap.conf failed: " + str(e)
|
|
return 1
|
|
|
|
#Modify pam to add pam_krb5
|
|
run(["/usr/sbin/authconfig", "--enablekrb5", "--update"])
|
|
print "Kerberos 5 enabled"
|
|
|
|
if options.conf_ntp and not options.on_master:
|
|
if options.ntp_server:
|
|
ntp_server = options.ntp_server
|
|
else:
|
|
ntp_server = cli_server
|
|
ipaclient.ntpconf.config_ntp(ntp_server, fstore)
|
|
print "NTP enabled"
|
|
|
|
#Activate Name Server Caching Daemon
|
|
try:
|
|
run(["/sbin/service", "nscd", "restart"])
|
|
except:
|
|
print "Failed to start the NSCD daemon"
|
|
print "Caching of users/groups will not be available"
|
|
pass
|
|
|
|
try:
|
|
run(["/sbin/chkconfig", "nscd", "on"])
|
|
except:
|
|
print "Failed to configure automatic startup of the NSCD daemon"
|
|
print "Caching of users/groups will not be available after reboot"
|
|
pass
|
|
|
|
# Get the CA certificate
|
|
run(["/usr/bin/wget", "-O", "/etc/ipa/ca.crt", "http://%s/ipa/config/ca.crt" % cli_server])
|
|
|
|
print "Client configuration complete."
|
|
|
|
return 0
|
|
|
|
try:
|
|
if __name__ == "__main__":
|
|
sys.exit(main())
|
|
except SystemExit, e:
|
|
sys.exit(e)
|
|
except KeyboardInterrupt:
|
|
sys.exit(1)
|