Ahenk/usr/share/ahenk/base/registration/execute_sssd_authentication.py

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#!/usr/bin/python3
# -*- coding: utf-8 -*-
# Author: Hasan Kara <h.kara27@gmail.com>
from base.scope import Scope
from base.util.util import Util
import re
class ExecuteSSSDAuthentication:
def __init__(self):
scope = Scope().get_instance()
self.logger = scope.get_logger()
self.util = Util()
def authenticate(self, server_address, dn, admin_dn, admin_password):
try:
ldap_pwdlockout_dn = "ou=PasswordPolicies" + "," + dn
# pattern for clearing file data from spaces, tabs and newlines
pattern = re.compile(r'\s+')
sssd_config_template_path = "/usr/share/ahenk/base/registration/config-files/sssd.conf"
sssd_config_folder_path = "/etc/sssd"
sssd_config_file_path = "/etc/sssd/sssd.conf"
sssd_language_conf = "/etc/default/sssd"
common_session_conf_path = "/etc/pam.d/common-session"
# copy configuration file to /etc/sssd/sssd.conf before package installation
# create sssd folder in /etc
if not self.util.is_exist(sssd_config_folder_path):
self.util.create_directory(sssd_config_folder_path)
self.logger.info("{0} folder is created".format(sssd_config_folder_path))
# Copy sssd.conf template under /etc/sssd
self.util.copy_file(sssd_config_template_path, sssd_config_folder_path)
self.logger.info("{0} config file is copied under {1}".format(sssd_config_template_path, sssd_config_folder_path))
# Configure sssd.conf
file_sssd = open (sssd_config_file_path, 'r')
file_data = file_sssd.read()
file_data = file_data.replace("###ldap_pwdlockout_dn###", "ldap_pwdlockout_dn = " + ldap_pwdlockout_dn)
file_data = file_data.replace("###ldap_uri###", "ldap_uri = " + "ldap://" + server_address + "/")
file_data = file_data.replace("###ldap_default_bind_dn###", "ldap_default_bind_dn = " + admin_dn)
file_data = file_data.replace("###ldap_default_authtok###", "ldap_default_authtok = " + admin_password)
file_data = file_data.replace("###ldap_search_base###", "ldap_search_base = " + dn)
file_data = file_data.replace("###ldap_user_search_base###", "ldap_user_search_base = " + dn)
file_data = file_data.replace("###ldap_group_search_base###", "ldap_group_search_base = " + dn)
file_data = file_data.replace("###ldap_sudo_search_base###", "ldap_sudo_search_base = ou=Role,ou=Groups," + dn)
file_sssd.close()
file_sssd = open(sssd_config_file_path, 'w')
file_sssd.write(file_data)
file_sssd.close()
# Install libpam-sss sssd-common for sssd authentication
(result_code, p_out, p_err) = self.util.execute("sudo apt install libpam-sss sssd-common libsss-sudo -y")
if result_code != 0:
self.logger.error("SSSD packages couldn't be downloaded.")
return False
(result_code, p_out, p_err) = self.util.execute("chmod 600 {}".format(sssd_config_file_path))
if (result_code == 0):
self.logger.info("Chmod komutu başarılı bir şekilde çalıştırıldı")
else:
self.logger.error("Chmod komutu başarısız : " + str(p_err))
# configure common-session for creating home directories for ldap users
file_common_session = open(common_session_conf_path, 'r')
file_data = file_common_session.read()
if "session optional pam_mkhomedir.so skel=/etc/skel umask=077" not in file_data :
file_data = file_data + "\n" + "session optional pam_mkhomedir.so skel=/etc/skel umask=077"
self.logger.info("common-session is configured")
file_common_session.close()
file_common_session = open(common_session_conf_path, 'w')
file_common_session.write(file_data)
file_common_session.close()
# configure sssd for language environment
file_default_sssd = open(sssd_language_conf, 'r')
file_data = file_default_sssd.read()
if "LC_ALL=\"tr_CY.UTF-8\"" not in file_data :
file_data = file_data + "\n" + "LC_ALL=\"tr_CY.UTF-8\""
self.logger.info("/etc/default/sssd is configured")
file_default_sssd.close()
file_default_sssd = open(sssd_language_conf, 'w')
file_default_sssd.write(file_data)
file_default_sssd.close()
self.logger.info("Restarting sssd service.")
self.util.execute("systemctl restart sssd.service")
# Configure nsswitch.conf
file_ns_switch = open("/etc/nsswitch.conf", 'r')
file_data = file_ns_switch.read()
# cleared file data from spaces, tabs and newlines
text = pattern.sub('', file_data)
is_configuration_done_before = False
if "passwd:compatsss" not in text and "passwd:compat" in text:
file_data = file_data.replace("passwd: compat", "passwd: compat sss")
is_configuration_done_before = True
if "passwd:filessystemdsss" not in text and "passwd:filessystemd" in text:
file_data = file_data.replace("passwd: files systemd", "passwd: files systemd sss")
is_configuration_done_before = True
if "group:compatsss" not in text and "group:compat" in text:
file_data = file_data.replace("group: compat", "group: compat sss")
is_configuration_done_before = True
if "group:filessystemdsss" not in text and "group:filessystemd" in text:
file_data = file_data.replace("group: files systemd", "group: files systemd sss")
is_configuration_done_before = True
if "shadow:compatsss" not in text and "shadow:compat" in text:
file_data = file_data.replace("shadow: compat", "shadow: compat sss")
is_configuration_done_before = True
if "shadow:filessss" not in text and "shadow:files" in text:
file_data = file_data.replace("shadow: files", "shadow: files sss")
is_configuration_done_before = True
if "services:dbfilessss" not in text:
file_data = file_data.replace("services: db files", "services: db files sss")
is_configuration_done_before = True
if "netgroup:nissss" not in text:
file_data = file_data.replace("netgroup: nis", "netgroup: nis sss")
is_configuration_done_before = True
if "sudoers:filessss" not in text and "sudoers:files" in text:
file_data = file_data.replace("sudoers: files", "sudoers: files sss")
is_configuration_done_before = True
elif "sudoers:filessss" in text:
is_configuration_done_before = False
else:
file_data = file_data + "sudoers: files sss"
if is_configuration_done_before:
self.logger.info("nsswitch.conf configuration has been completed")
else:
self.logger.info("nsswitch.conf is already configured")
file_ns_switch.close()
file_ns_switch = open("/etc/nsswitch.conf", 'w')
file_ns_switch.write(file_data)
file_ns_switch.close()
self.util.execute("systemctl restart nscd.service")
# self.util.execute("pam-auth-update --force")
self.logger.info("LDAP Login operation has been completed.")
self.logger.info("LDAP Login işlemi başarı ile sağlandı.")
return True
except Exception as e:
self.logger.error(str(e))
self.logger.info("LDAP Login işlemi esnasında hata oluştu.")
return False