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#!/usr/libexec/platform-python
# -*- coding: utf-8 -*-
#
# Authors:
# Pavel Březina <pbrezina@redhat.com>
#
# Copyright (C) 2018 Red Hat
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
import os
import sys
import locale
import gettext
import subprocess
from authcompat_Options import *
from authcompat_EnvironmentFile import *
from authcompat_ConfigSnippet import *
_ = gettext.gettext
def eprint(*args, **kwargs):
print(*args, file=sys.stderr, **kwargs)
class Command:
TEST = False
def __init__(self, command, args, input=None, check=True):
self.args = [command] + args
self.input = input.encode() if input is not None else None
self.check = check
self.result = None
def run(self):
print(_("Executing: %s") % ' '.join(self.args))
if self.TEST:
return
self.result = subprocess.run(self.args, check=self.check,
input=self.input,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
class Service:
def __init__(self, name):
self.name = name + '.service'
def runsystemd(self, command, required, enoent_code):
try:
command.run()
except subprocess.CalledProcessError as result:
if required and result.returncode == enoent_code:
eprint(_("Service %s was not found. Please install the service.")
% self.name)
elif result.returncode != enoent_code:
eprint(_("Command [%s] failed with %d, stderr:")
% (' '.join(result.cmd), result.returncode))
eprint(result.stderr.decode())
def enable(self):
cmd = Command(Path.System("cmd-systemctl"), ["enable", self.name])
self.runsystemd(cmd, True, 1)
def disable(self):
cmd = Command(Path.System("cmd-systemctl"), ["disable", self.name])
self.runsystemd(cmd, False, 1)
def start(self, Restart=True):
if Restart:
self.stop()
cmd = Command(Path.System("cmd-systemctl"), ["start", self.name])
self.runsystemd(cmd, True, 5)
def stop(self):
cmd = Command(Path.System("cmd-systemctl"), ["stop", self.name])
self.runsystemd(cmd, False, 5)
class Path:
LocalDir = os.path.dirname(os.path.realpath(__file__))
Config = EnvironmentFile(LocalDir + "/authcompat_paths")
Files = {
'ldap.conf' : '/etc/openldap/ldap.conf',
'krb5.conf' : '/etc/krb5.conf.d/authconfig-krb.conf',
'sssd.conf' : '/etc/sssd/conf.d/authconfig-sssd.conf',
'authconfig' : '/etc/sysconfig/authconfig',
'network' : '/etc/sysconfig/network',
'pwquality.conf' : '/etc/security/pwquality.conf.d/10-authconfig-pwquality.conf',
'yp.conf' : '/etc/yp.conf',
'cmd-systemctl' : '/usr/bin/systemctl',
'cmd-authselect' : '/usr/bin/authselect',
'cmd-realm' : '/usr/sbin/realm',
'cmd-domainname' : '/usr/bin/domainname',
'cmd-setsebool' : '/usr/sbin/setsebool'
}
@staticmethod
def Local(relpath):
return "%s/%s" % (Path.LocalDir, relpath)
@staticmethod
def System(name):
return Path.Files[name]
class Configuration:
class Base(object):
def __init__(self, options, ServiceName=None):
self.options = options
self.service = None
if ServiceName is not None:
self.service = Service(ServiceName)
def isEnabled(self):
return True
def isDisabled(self):
return not self.isEnabled()
def enableService(self, nostart):
if self.service is None:
return
self.service.enable()
if not nostart:
self.service.start()
def disableService(self, nostop):
if self.service is None:
return
self.service.disable()
if not nostop:
self.service.stop()
def cleanup(self):
return
def write(self):
return
def get(self, name):
return self.options.get(name)
def isset(self, name):
return self.options.isset(name)
def getTrueOrNone(self, name):
return self.options.getTrueOrNone(name)
def getBool(self, name):
return self.options.getBool(name)
def getBoolAsValue(self, name, if_true, if_false, AllowNone=False):
if AllowNone and not self.isset(name):
return None
value = self.getBool(name)
if value:
return if_true
return if_false
def removeFile(self, filename):
print(_("Removing file: %s") % filename)
if self.options.getBool("test-call"):
return
try:
os.remove(filename)
except FileNotFoundError:
return
class LDAP(Base):
def __init__(self, options):
super(Configuration.LDAP, self).__init__(options)
def write(self):
config = EnvironmentFile(Path.System('ldap.conf'), " ",
delimiter_re="\s\t", quotes=False)
if self.isset("ldapserver"):
config.set("URI", self.get("ldapserver"))
if self.isset("ldapbasedn"):
config.set("BASE", self.get("ldapbasedn"))
config.write()
class Kerberos(Base):
def __init__(self, options):
super(Configuration.Kerberos, self).__init__(options)
def isEnabled(self):
if not self.isset("krb5realm") and not self.isset("krb5realmdns"):
return None
return self.get("krb5realm") != "" or self.getBool("krb5realmdns")
def cleanup(self):
# Do not remove the file if these options are not set
if not self.isset("krb5realm") and not self.isset("krb5realmdns"):
return
self.removeFile(Path.System('krb5.conf'))
def write(self):
if self.isDisabled():
return
path = Path.Local("snippets/authconfig-krb.conf")
config = ConfigSnippet(path, Path.System('krb5.conf'))
realm = self.get("krb5realm")
keys = {
'realm' : self.get("krb5realm"),
'kdc-srv' : self.get("krb5kdcdns"),
'realm-srv' : self.get("krb5realmdns"),
'kdc' : self.get("krb5kdc") if realm else None,
'adminserver' : self.get("krb5adminserver") if realm else None,
'domain' : realm.lower() if realm else None
}
config.write(keys)
class Network(Base):
def __init__(self, options):
super(Configuration.Network, self).__init__(options)
def write(self):
nisdomain = self.get("nisdomain")
config = EnvironmentFile(Path.System('network'))
if nisdomain is None:
return
config.set("NISDOMAIN", nisdomain)
config.write()
class SSSD(Base):
def __init__(self, options):
super(Configuration.SSSD, self).__init__(options, ServiceName="sssd")
def isEnabled(self):
if not self.isset("ldap") and not self.isset("sssd"):
return None
return self.getBool("ldap") or self.getBool("sssd")
def cleanup(self):
self.removeFile(Path.System('sssd.conf'))
def write(self):
# Authconfig would not generate sssd in this case so we should not
# either. Even if --enablesssd[auth] was provided the configuration
# would not be generated.
if not self.getBool("ldap"):
return
path = Path.Local("snippets/authconfig-sssd.conf")
config = ConfigSnippet(path, Path.System('sssd.conf'))
schema = "rfc2307bis" if self.getBool("rfc2307bis") else None
keys = {
'ldap-uri': self.get("ldapserver"),
'ldap-basedn': self.get("ldapbasedn"),
'ldap-tls': self.getTrueOrNone("ldaptls"),
'ldap-schema': schema,
'krb5' : self.getTrueOrNone("krb5"),
'kdc-uri': self.get("krb5kdc"),
'kpasswd-uri': self.get("krb5adminserver"),
'realm': self.get("krb5realm"),
'cache-creds': self.getTrueOrNone("cachecreds"),
'cert-auth' : self.getTrueOrNone("smartcard")
}
config.write(keys)
class Winbind(Base):
def __init__(self, options):
super(Configuration.Winbind, self).__init__(options, ServiceName="winbind")
def isEnabled(self):
if not self.isset("winbind") and not self.isset("winbindauth"):
return None
return self.getBool("winbind") or self.getBool("winbindauth")
def write(self):
if not self.isset("winbindjoin"):
return
creds = self.options.get("winbindjoin").split("%", 1)
user = creds[0]
password = None
if len(creds) > 1:
password = creds[1] + '\n'
args = [
'join',
'-U', '"%s"' % user,
'--client-software', 'winbind'
]
if self.isset("smbworkgroup"):
args.append(self.get("smbworkgroup"))
cmd = Command(Path.System('cmd-realm'), args, input=password)
try:
cmd.run()
except FileNotFoundError as result:
eprint(_("%s was not found. Please, install realmd.")
% Path.System('cmd-realm'))
class PWQuality(Base):
def __init__(self, options):
super(Configuration.PWQuality, self).__init__(options)
def write(self):
config = EnvironmentFile(Path.System('pwquality.conf'))
value_set = False
pwopts = {
"minlen" : self.get("passminlen"),
"minclass" : self.get("passminclass"),
"maxrepeat" : self.get("passmaxrepeat"),
"maxclassrepeat" : self.get("passmaxclassrepeat"),
"lcredit" : self.getBoolAsValue("reqlower", -1, 0, AllowNone=True),
"ucredit" : self.getBoolAsValue("requpper", -1, 0, AllowNone=True),
"dcredit" : self.getBoolAsValue("reqdigit", -1, 0, AllowNone=True),
"ocredit" : self.getBoolAsValue("reqother", -1, 0, AllowNone=True)
}
# Write options only if their are actually set
for opt, value in pwopts.items():
if value is not None:
print(opt + "=" + str(value))
config.set(opt, value)
value_set = True
if value_set:
config.write()
class MakeHomedir(Base):
def __init__(self, options):
super(Configuration.MakeHomedir, self).__init__(options, ServiceName="oddjobd")
def isEnabled(self):
if not self.isset("mkhomedir"):
return None
return self.getBool("mkhomedir")
def disableService(self, nostop):
# Never disable the service in case it is already running as
# other applications may depend on it.
return
class NIS(Base):
def __init__(self, options):
super(Configuration.NIS, self).__init__(options)
self.rpcbind = Service("rpcbind")
self.ypbind = Service("ypbind")
def isEnabled(self):
if not self.isset("nis"):
return None
return self.getBool("nis")
def enableService(self, nostart):
if not self.isset("nisdomain"):
return
nisdom = self.get("nisdomain")
if not nostart:
cmd = Command(Path.System('cmd-domainname'), [nisdom])
cmd.run()
cmd = Command(Path.System('cmd-setsebool'),
['-P', 'allow_ypbind', '1'])
cmd.run()
self.rpcbind.enable()
self.ypbind.enable()
if not nostart:
self.rpcbind.start(Restart=False)
self.ypbind.start()
def disableService(self, nostop):
if not nostop:
cmd = Command(Path.System('cmd-domainname'), ["(none)"])
cmd.run()
cmd = Command(Path.System('cmd-setsebool'),
['-P', 'allow_ypbind', '0'])
cmd.run()
self.rpcbind.disable()
self.ypbind.disable()
if not nostop:
self.rpcbind.stop()
self.ypbind.stop()
def write(self):
if not self.isset("nisdomain"):
return
output = "domain " + self.get("nisdomain")
additional_servers = []
if self.isset("nisserver"):
servers = self.get("nisserver").split(",")
additional_servers = servers[1:]
output += " server " + servers[0] + "\n"
else:
output += " broadcast\n"
for server in additional_servers:
output += "ypserver " + server + "\n"
filename = Path.System('yp.conf')
if self.getBool("test-call"):
print("========== BEGIN Content of [%s] ==========" % filename)
print(output)
print("========== END Content of [%s] ==========\n" % filename)
return
with open(filename, "w") as f:
f.write(output)
class AuthCompat:
def __init__(self):
self.sysconfig = EnvironmentFile(Path.System('authconfig'))
self.options = Options()
self.options.parse()
self.options.applysysconfig(self.sysconfig)
self.options.updatesysconfig(self.sysconfig)
def printWarning(self):
print(_("Running authconfig compatibility tool."))
print(_("The purpose of this tool is to enable authentication against "
"chosen services with authselect and minimum configuration. "
"It does not provide all capabilities of authconfig.\n"))
print(_("IMPORTANT: authconfig is replaced by authselect, "
"please update your scripts."))
print(_("See man authselect-migration(7) to help you with migration to authselect"))
options = self.options.getSetButUnsupported()
if options:
print(_("Warning: These options are not supported anymore "
"and have no effect:"))
for name in options:
print(" --%s" % name)
print("")
def printOptions(self):
for option in Options.List:
print("%s=%s" % (option.name, option.value))
def printSysconfig(self):
for line in self.sysconfig.getall():
print("%s=%s" % (line.name, line.value))
def canContinue(self):
disallowed = ["test", "probe", "restorebackup", "restorelastbackup"]
required = ["update", "updateall", "kickstart"]
if not self.options.getBool("test") and os.getuid() != 0:
print(_("authconfig can only be run as root"))
return False
for option in disallowed:
if self.options.getBool(option):
print(_("Error: option --%s is no longer supported and we "
"cannot continue if it is set." % option))
return False
if self.options.getBool("winbind") != self.options.getBool("winbindauth"):
print(_("Error: Both --enablewinbind and --enablewinbindauth must be set."))
return False
# We require one of these options to perform changes
# We encourage to use --updateall since we no longer support just pure
# --update or --kickstart, they will act as --updateall.
for option in required:
if self.options.getBool(option):
return True
print(_("Error: Please, provide --updateall option."))
return False
def runAuthselect(self):
map = {
'smartcard' : 'with-smartcard',
'requiresmartcard' : 'with-smartcard-required',
'fingerprint' : 'with-fingerprint',
'mkhomedir' : 'with-mkhomedir',
'faillock' : 'with-faillock',
'pamaccess' : 'with-pamaccess',
'winbindkrb5' : 'with-krb5'
}
# Read current configuration first.
(profile, features) = self.getCurrentAuthselectConfig()
# Change profile if requested.
if (self.options.getBool("ldap") or self.options.getBool("ldapauth") or
self.options.getBool("sssd") or self.options.getBool("sssdauth")):
profile = "sssd"
elif self.options.getBool("nis"):
profile = "nis"
elif self.options.getBool("winbind"):
profile = "winbind"
# Default to sssd
if profile is None:
profile = "sssd"
# Add enabled and remove disabled features.
for option, feature in map.items():
if not self.options.isset(option):
continue
enabled = self.options.getBool(option)
if enabled:
features.append(feature)
else:
while feature in features:
features.remove(feature)
# Add lock-on-smartcard-removal if requested
if self.options.isset("smartcardaction"):
if int(self.options.get("smartcardaction")) == 0:
features.append("with-smartcard-lock-on-removal")
else:
features.remove("with-smartcard-lock-on-removal")
# Remove duplicates. The order is not kept but that does not matter.
features = list(set(features))
# Always run with --force. This is either first call of authconfig
# in installation script or it is run on already configured system.
# We want to use authselect in both cases anyway, since authconfig
# would change the configuration either way.
args = ["select", profile]
args.extend(features)
args.append("--force")
cmd = Command(Path.System('cmd-authselect'), args)
cmd.run()
def getCurrentAuthselectConfig(self):
cmd = Command(Path.System('cmd-authselect'), ['check'], check=False)
cmd.run()
if cmd.result is None or cmd.result.returncode != 0:
return (None, [])
cmd = Command(Path.System('cmd-authselect'), ['current', '--raw'])
cmd.run()
current = cmd.result.stdout.decode("utf-8").split()
return (current[0], current[1:])
def writeConfiguration(self):
configs = [
Configuration.LDAP(self.options),
Configuration.Network(self.options),
Configuration.Kerberos(self.options),
Configuration.SSSD(self.options),
Configuration.Winbind(self.options),
Configuration.PWQuality(self.options),
Configuration.MakeHomedir(self.options),
Configuration.NIS(self.options)
]
for config in configs:
# Configuration decides if it needs to write something or not
config.write()
# Enable or disable service if needed
nostart = self.options.getBool("nostart")
try:
enabled = config.isEnabled()
# Skip service management if it can not be decided
if enabled is None:
continue
if enabled:
config.enableService(nostart)
else:
config.disableService(nostart)
config.cleanup()
except subprocess.CalledProcessError as result:
# This is not fatal error.
eprint(_("Command [%s] failed with %d, stderr:")
% (' '.join(result.cmd), result.returncode))
eprint(result.stderr.decode())
def main():
try:
locale.setlocale(locale.LC_ALL, '')
except locale.Error:
sys.stderr.write('Warning: Unsupported locale setting.\n')
authcompat = AuthCompat()
authcompat.printWarning()
Command.TEST = authcompat.options.getBool("test-call")
EnvironmentFile.TEST = authcompat.options.getBool("test-call")
ConfigSnippet.TEST = authcompat.options.getBool("test-call")
if not authcompat.canContinue():
sys.exit(1)
try:
authcompat.runAuthselect()
authcompat.writeConfiguration()
authcompat.sysconfig.write()
except subprocess.CalledProcessError as result:
eprint(_("Command [%s] failed with %d, stderr:")
% (' '.join(result.cmd), result.returncode))
eprint(result.stderr.decode())
sys.exit(0)
if __name__ == "__main__":
main()