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258 lines
10 KiB
Python
258 lines
10 KiB
Python
# Authors: Simo Sorce <ssorce@redhat.com>
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# Alexander Bokovoy <abokovoy@redhat.com>
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# Martin Kosek <mkosek@redhat.com>
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# Tomas Babej <tbabej@redhat.com>
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#
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# Copyright (C) 2007-2014 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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This module contains default Fedora-specific implementations of system tasks.
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'''
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import os
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import shutil
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import stat
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import socket
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import sys
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from subprocess import CalledProcessError
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from ipapython.ipa_log_manager import root_logger
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from ipapython import ipautil
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from ipaplatform.paths import paths
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from ipaplatform.fedora.authconfig import FedoraAuthConfig
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from ipaplatform.base.tasks import *
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class FedoraTaskNamespace(BaseTaskNamespace):
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def restore_context(self, filepath, restorecon=paths.SBIN_RESTORECON):
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"""
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restore security context on the file path
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SELinux equivalent is /path/to/restorecon <filepath>
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restorecon's return values are not reliable so we have to
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ignore them (BZ #739604).
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ipautil.run() will do the logging.
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"""
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try:
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if os.path.exists(paths.SELINUXENABLED):
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ipautil.run([paths.SELINUXENABLED])
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else:
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# No selinuxenabled, no SELinux
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return
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except ipautil.CalledProcessError:
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# selinuxenabled returns 1 if not enabled
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return
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if (os.path.exists(restorecon)):
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ipautil.run([restorecon, filepath], raiseonerr=False)
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def check_selinux_status(self, restorecon=paths.RESTORECON):
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"""
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We don't have a specific package requirement for policycoreutils
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which provides restorecon. This is because we don't require
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SELinux on client installs. However if SELinux is enabled then
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this package is required.
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This function returns nothing but may raise a Runtime exception
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if SELinux is enabled but restorecon is not available.
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"""
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try:
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if os.path.exists(paths.SELINUXENABLED):
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ipautil.run([paths.SELINUXENABLED])
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else:
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# No selinuxenabled, no SELinux
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return
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except ipautil.CalledProcessError:
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# selinuxenabled returns 1 if not enabled
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return
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if not os.path.exists(restorecon):
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raise RuntimeError('SELinux is enabled but %s does not exist.\n'
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'Install the policycoreutils package and start '
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'the installation again.' % restorecon)
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def restore_pre_ipa_client_configuration(self, fstore, statestore,
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was_sssd_installed,
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was_sssd_configured):
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auth_config = FedoraAuthConfig()
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if statestore.has_state('authconfig'):
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# disable only those configurations that we enabled during install
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for conf in ('ldap', 'krb5', 'sssd', 'sssdauth', 'mkhomedir'):
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cnf = statestore.restore_state('authconfig', conf)
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# Do not disable sssd, as this can cause issues with its later
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# uses. Remove it from statestore however, so that it becomes
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# empty at the end of uninstall process.
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if cnf and conf != 'sssd':
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auth_config.disable(conf)
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else:
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# There was no authconfig status store
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# It means the code was upgraded after original install
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# Fall back to old logic
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auth_config.disable("ldap")
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auth_config.disable("krb5")
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if not(was_sssd_installed and was_sssd_configured):
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# Only disable sssdauth. Disabling sssd would cause issues
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# with its later uses.
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auth_config.disable("sssdauth")
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auth_config.disable("mkhomedir")
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auth_config.execute()
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def set_nisdomain(self, nisdomain):
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# Let authconfig setup the permanent configuration
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auth_config = FedoraAuthConfig()
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auth_config.add_parameter("nisdomain", nisdomain)
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auth_config.execute()
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def modify_nsswitch_pam_stack(self, sssd, mkhomedir, statestore):
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auth_config = FedoraAuthConfig()
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if sssd:
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statestore.backup_state('authconfig', 'sssd', True)
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statestore.backup_state('authconfig', 'sssdauth', True)
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auth_config.enable("sssd")
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auth_config.enable("sssdauth")
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else:
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statestore.backup_state('authconfig', 'ldap', True)
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auth_config.enable("ldap")
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auth_config.enable("forcelegacy")
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if mkhomedir:
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statestore.backup_state('authconfig', 'mkhomedir', True)
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auth_config.enable("mkhomedir")
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auth_config.execute()
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def modify_pam_to_use_krb5(self, statestore):
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auth_config = FedoraAuthConfig()
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statestore.backup_state('authconfig', 'krb5', True)
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auth_config.enable("krb5")
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auth_config.add_option("nostart")
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auth_config.execute()
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def insert_ca_cert_into_systemwide_ca_store(self, cacert_path):
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# Add the 'ipa-' prefix to cert name to avoid name collisions
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cacert_name = os.path.basename(cacert_path)
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new_cacert_path = os.path.join(paths.SYSTEMWIDE_CA_STORE,
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'ipa-%s' % cacert_name)
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# Add the CA to the systemwide CA trust database
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try:
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shutil.copy(cacert_path, new_cacert_path)
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ipautil.run([paths.UPDATE_CA_TRUST])
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except OSError, e:
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root_logger.info("Failed to copy %s to %s" % (cacert_path,
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new_cacert_path))
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except CalledProcessError, e:
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root_logger.info("Failed to add CA to the systemwide "
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"CA trust database: %s" % str(e))
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else:
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root_logger.info('Added the CA to the systemwide CA trust '
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'database.')
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return True
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return False
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def remove_ca_cert_from_systemwide_ca_store(self, cacert_path):
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# Derive the certificate name in the store
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cacert_name = os.path.basename(cacert_path)
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new_cacert_path = os.path.join(paths.SYSTEMWIDE_CA_STORE,
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'ipa-%s' % cacert_name)
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# Remove CA cert from systemwide store
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if os.path.exists(new_cacert_path):
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try:
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os.remove(new_cacert_path)
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ipautil.run([paths.UPDATE_CA_TRUST])
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except OSError, e:
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root_logger.error('Could not remove: %s, %s'
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% (new_cacert_path, str(e)))
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return False
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except CalledProcessError, e:
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root_logger.error('Could not update systemwide CA trust '
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'database: %s' % str(e))
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return False
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else:
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root_logger.info('Systemwide CA database updated.')
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return True
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def backup_and_replace_hostname(self, fstore, statestore, hostname):
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old_hostname = socket.gethostname()
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try:
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ipautil.run([paths.BIN_HOSTNAME, hostname])
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except ipautil.CalledProcessError, e:
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print >>sys.stderr, ("Failed to set this machine hostname to "
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"%s (%s)." % (hostname, str(e)))
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filepath = paths.ETC_HOSTNAME
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if os.path.exists(filepath):
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# read old hostname
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with open(filepath, 'r') as f:
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for line in f.readlines():
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line = line.strip()
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if not line or line.startswith('#'):
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# skip comment or empty line
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continue
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old_hostname = line
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break
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fstore.backup_file(filepath)
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with open(filepath, 'w') as f:
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f.write("%s\n" % hostname)
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os.chmod(filepath,
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stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | stat.S_IROTH)
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os.chown(filepath, 0, 0)
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self.restore_context(filepath)
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# store old hostname
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statestore.backup_state('network', 'hostname', old_hostname)
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def restore_network_configuration(self, fstore, statestore):
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old_filepath = paths.SYSCONFIG_NETWORK
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old_hostname = statestore.get_state('network', 'hostname')
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hostname_was_configured = False
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if fstore.has_file(old_filepath):
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# This is Fedora >=18 instance that was upgraded from previous
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# Fedora version which held network configuration
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# in /etc/sysconfig/network
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old_filepath_restore = paths.SYSCONFIG_NETWORK_IPABKP
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fstore.restore_file(old_filepath, old_filepath_restore)
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print "Deprecated configuration file '%s' was restored to '%s'" \
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% (old_filepath, old_filepath_restore)
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hostname_was_configured = True
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filepath = paths.ETC_HOSTNAME
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if fstore.has_file(filepath):
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fstore.restore_file(filepath)
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hostname_was_configured = True
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if not hostname_was_configured and old_hostname:
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# hostname was not configured before but was set by IPA. Delete
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# /etc/hostname to restore previous configuration
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try:
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os.remove(filepath)
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except OSError:
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pass
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tasks = FedoraTaskNamespace()
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