# -*- coding: utf-8 -*-
# Copyright © Cloud Linux GmbH & Cloud Linux Software, Inc 2010-2018 All Rights Reserved
#
# Licensed under CLOUD LINUX LICENSE AGREEMENT
# http://cloudlinux.com/docs/LICENSE.TXT
#
import os
import shutil
import subprocess
import simplejson as json
import configparser
CL_CONFIG = '/etc/sysconfig/cloudlinux'
HOOK_SECTION = 'hooks'
HOOK_SEPARATOR = ';'
DEBUG_STRING = 'python-cllib:clhook:'
def get_config(file_name):
"""
read config from file_name
return config
"""
config = configparser.ConfigParser(interpolation=None, strict=False)
config.optionxform = str # make config case sensitive
config.read(file_name)
return config
def write_config(config, file_name, debug_local_name):
"""
write config to file_name
return [BOOLEAN_STATE, MESSAGE]
"""
try:
tmp_cfg_path = f'{file_name}.{os.getpid()}'
with open(tmp_cfg_path, 'w', encoding='utf-8') as tmpconfig:
config.write(tmpconfig)
shutil.move(tmp_cfg_path, file_name)
except IOError as e:
return [False, f'{debug_local_name}{file_name} write error\n{str(e)}']
return [True, 'OK\n']
def get_hook_list_from_file(hook_prefix, config_file = CL_CONFIG):
"""
return [BOOLEAN_STATE, hook_list]
"""
hook_list = []
config = get_config(config_file)
try:
hook_list = config.get(HOOK_SECTION, hook_prefix).split(HOOK_SEPARATOR)
except (configparser.NoOptionError, configparser.NoSectionError):
return [False, hook_list]
return [True, hook_list]
def register_hook(hook_path, hook_prefix, config_file = CL_CONFIG):
"""
add hook to config file
return [BOOLEAN_STATE, MESSAGE]
"""
debug_local_name = DEBUG_STRING + 'register_hook:'
config = get_config(config_file)
try:
hook_list = config.get(HOOK_SECTION, hook_prefix).split(HOOK_SEPARATOR)
if hook_path in hook_list:
return [True, debug_local_name + 'Hook ' + str(hook_path) + ' already registred\n' ]
hook_list.append(hook_path)
config.set(HOOK_SECTION, hook_prefix, HOOK_SEPARATOR.join(hook_list))
except configparser.NoSectionError:
config.add_section(HOOK_SECTION)
config.set(HOOK_SECTION, hook_prefix, hook_path)
except configparser.NoOptionError:
config.set(HOOK_SECTION, hook_prefix, hook_path)
return write_config(config, config_file, debug_local_name)
def unregister_hook(hook_path, hook_prefix, config_file = CL_CONFIG):
"""
remove hook from config_file
return [BOOLEAN_STATE, MESSAGE]
"""
debug_local_name = DEBUG_STRING + 'unregister_hook:'
config = get_config(config_file)
try:
hook_list = config.get(HOOK_SECTION, hook_prefix).split(HOOK_SEPARATOR)
hook_list.remove(hook_path)
config.set(HOOK_SECTION, hook_prefix, HOOK_SEPARATOR.join(hook_list))
return write_config(config, config_file, debug_local_name)
except (configparser.NoSectionError, configparser.NoOptionError, ValueError):
return [True, 'OK\n']
def call_hook_list(hook_list, data):
"""
call hooks and send data as json to stdin
return [BOOLEAN_STATUS, message]
"""
debug_local_name = DEBUG_STRING + 'call_hook:'
json_encode = json.dumps(data)
for hook in hook_list:
if os.path.isfile(hook) and os.access(hook, os.X_OK):
try:
with subprocess.Popen(
hook,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
) as proc:
proc.stdin.write(json_encode)
proc.communicate()
except OSError:
return [False, debug_local_name + 'Hook call error\n']
else:
return [False, debug_local_name + str(hook) + ' : isn`t file or isn`t runnable\n']
return [True, 'OK\n']
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