mirror of
https://github.com/Pardus-LiderAhenk/ahenk
synced 2024-11-29 10:52:20 +03:00
372 lines
20 KiB
Python
372 lines
20 KiB
Python
|
#!/usr/bin/python3
|
|||
|
|
# -*- coding: utf-8 -*-
|
|||
|
|
# Author: Caner Feyzullahoglu <caner.feyzullahoglu@agem.com.tr>
|
|||
|
|
"""
|
|||
|
|
Style Guide is PEP-8
|
|||
|
|
https://www.python.org/dev/peps/pep-0008/
|
|||
|
|
"""
|
|||
|
|
import json
|
|||
|
|
import os
|
|||
|
|
|
|||
|
|
from base.plugin.abstract_plugin import AbstractPlugin
|
|||
|
|
|
|||
|
|
|
|||
|
|
class UserPrivilege(AbstractPlugin):
|
|||
|
|
def __init__(self, profile_data, context):
|
|||
|
|
super(AbstractPlugin, self).__init__()
|
|||
|
|
self.profile_data = profile_data
|
|||
|
|
self.context = context
|
|||
|
|
self.logger = self.get_logger()
|
|||
|
|
|
|||
|
|
# self.logger = self.context.logger
|
|||
|
|
|
|||
|
|
self.polkit_action_folder_path = '/usr/share/polkit-1/actions/'
|
|||
|
|
self.polkit_pkla_folder_path = '/etc/polkit-1/localauthority/50-local.d/'
|
|||
|
|
self.default_action_pref = 'tr.org.pardus.mys.pkexec.'
|
|||
|
|
|
|||
|
|
# self.permission_file_path = self.agent_config.get("UserPolicyPlugin", "userpolicyplugin.policyfile")
|
|||
|
|
# The below line was like above line at old version.
|
|||
|
|
self.permission_file_path = '/etc/ahenk/userpolicies'
|
|||
|
|
# "permission_file"_path was being taken from a config file which has been created by "agentconfig.py"
|
|||
|
|
# but this py is not present in new version. So I created it as a static string.
|
|||
|
|
|
|||
|
|
def limit_ahenk(self, item):
|
|||
|
|
|
|||
|
|
if self.has_attr_json(item, 'cpu') and item['cpu'] is not None and item['cpu'] is not '':
|
|||
|
|
self.logger.debug('Limiting ahenk cpu usage. Cpu limit value: {0}'.format(item['cpu']))
|
|||
|
|
self.execute('cpulimit -p {0} -l {1} -z &'.format(str(self.Ahenk.get_pid_number()), str(item['cpu'])),
|
|||
|
|
result=False)
|
|||
|
|
self.logger.debug('Limited ahenk cpu usage. Cpu limit value: {0}'.format(item['cpu']))
|
|||
|
|
|
|||
|
|
def handle_policy(self):
|
|||
|
|
print('Handling policy')
|
|||
|
|
self.logger.debug('Handling policy.')
|
|||
|
|
# Get username.
|
|||
|
|
# It is actually user UID in LDAP. The message being created in PolicySubscriberImpl by using
|
|||
|
|
# MessageFactoryImpl at server side.
|
|||
|
|
# At agent side Plugin.py takes a message from queue as an item, finds related plugin module by using
|
|||
|
|
# Scope (with parameters from the item such as plugin name and plugin version), puts "username" to context and
|
|||
|
|
# triggers "handle_policy" method of related plugin.
|
|||
|
|
username = self.context.get('username')
|
|||
|
|
|
|||
|
|
try:
|
|||
|
|
result_message = ''
|
|||
|
|
|
|||
|
|
if username is not None:
|
|||
|
|
self.logger.debug('Getting profile data.')
|
|||
|
|
data = json.loads(self.profile_data)
|
|||
|
|
privilege_items = data['items']
|
|||
|
|
|
|||
|
|
# Lists that will keep user names for cleaning on logout
|
|||
|
|
add_user_list = list()
|
|||
|
|
del_user_list = list()
|
|||
|
|
# List that will keep command paths
|
|||
|
|
command_path_list = list()
|
|||
|
|
|
|||
|
|
if len(privilege_items) > 0:
|
|||
|
|
self.logger.debug('Iterating over privilege items.')
|
|||
|
|
|
|||
|
|
for item in privilege_items:
|
|||
|
|
command_path = item['cmd'].strip()
|
|||
|
|
if command_path == "/opt/ahenk/ahenkd":
|
|||
|
|
self.limit_ahenk(item)
|
|||
|
|
continue
|
|||
|
|
|
|||
|
|
if self.is_exist(command_path) is False:
|
|||
|
|
self.logger.warning(
|
|||
|
|
'{0} command path not found. User privilege execution will not processed for this command.'.format(
|
|||
|
|
command_path))
|
|||
|
|
continue
|
|||
|
|
|
|||
|
|
polkit_status = item['polkitStatus']
|
|||
|
|
|
|||
|
|
# Create polkit for each item
|
|||
|
|
if polkit_status == 'privileged':
|
|||
|
|
|
|||
|
|
self.logger.debug('Parsing command.')
|
|||
|
|
command = str(self.parse_command(command_path))
|
|||
|
|
|
|||
|
|
action_id = self.default_action_pref + command
|
|||
|
|
|
|||
|
|
if not os.path.exists(action_id + '.policy'):
|
|||
|
|
self.logger.debug(
|
|||
|
|
'Creating action; command: ' + command + ', action_id: ' + action_id +
|
|||
|
|
', command_path: ' + command_path)
|
|||
|
|
self.create_action(command, action_id, command_path)
|
|||
|
|
|
|||
|
|
self.logger.debug(
|
|||
|
|
'Executing: "getent group ' + command + ' || groupadd ' + command + '"')
|
|||
|
|
self.execute('getent group ' + command + ' || groupadd ' + command)
|
|||
|
|
|
|||
|
|
self.logger.debug(
|
|||
|
|
'Executing: "adduser ' + str(username) + ' ' + command + '"')
|
|||
|
|
self.execute('adduser ' + str(username) + ' ' + command)
|
|||
|
|
|
|||
|
|
self.logger.debug('Adding command to add_user_list')
|
|||
|
|
add_user_list.append(command)
|
|||
|
|
|
|||
|
|
if not os.path.exists(action_id + '.pkla'):
|
|||
|
|
self.logger.debug(
|
|||
|
|
'Creating pkla; command: ' + command + ', action_id: ' + action_id)
|
|||
|
|
self.create_pkla(command, action_id)
|
|||
|
|
|
|||
|
|
self.logger.debug('Executing: "grep "pkexec" ' + str(command_path) + '"')
|
|||
|
|
(result_code, p_out, p_err) = self.execute('grep "pkexec" ' + str(command_path))
|
|||
|
|
|
|||
|
|
if result_code != 0:
|
|||
|
|
# Get resource limit choice
|
|||
|
|
limit_resource_usage = item['limitResourceUsage']
|
|||
|
|
# Get CPU and memory usage parameters
|
|||
|
|
cpu = item['cpu']
|
|||
|
|
memory = item['memory']
|
|||
|
|
|
|||
|
|
# Create wrapper command with resource limits
|
|||
|
|
self.logger.debug(
|
|||
|
|
'Creating wrapper command; command_path: ' + command_path +
|
|||
|
|
', limit_resource_usage: ' + str(limit_resource_usage) + ', cpu: ' +
|
|||
|
|
str(cpu) + ', memory: ' + str(memory))
|
|||
|
|
(wrapper_result, p_out, p_err) = self.create_wrapper_command(command_path,
|
|||
|
|
polkit_status,
|
|||
|
|
limit_resource_usage,
|
|||
|
|
cpu, memory,
|
|||
|
|
command_path_list)
|
|||
|
|
|
|||
|
|
if wrapper_result == 0:
|
|||
|
|
self.logger.debug('Wrapper created successfully.')
|
|||
|
|
self.logger.debug('Adding item result to result_message.')
|
|||
|
|
result_message += command_path + ' | Ayrıcalıklı | Başarılı, '
|
|||
|
|
else:
|
|||
|
|
self.logger.debug('Adding item result to result_message.')
|
|||
|
|
result_message += command_path + ' | Ayrıcalıklı | Başarısız, '
|
|||
|
|
|
|||
|
|
elif polkit_status == 'unprivileged':
|
|||
|
|
|
|||
|
|
self.logger.debug('Parsing command.')
|
|||
|
|
command = str(self.parse_command(command_path))
|
|||
|
|
|
|||
|
|
action_id = self.default_action_pref + command
|
|||
|
|
|
|||
|
|
if not os.path.exists(action_id + '.policy'):
|
|||
|
|
self.logger.debug(
|
|||
|
|
'Creating action; command: ' + command + ', action_id: ' + action_id +
|
|||
|
|
', command_path: ' + command_path)
|
|||
|
|
self.create_action(command, action_id, command_path)
|
|||
|
|
|
|||
|
|
self.logger.debug(
|
|||
|
|
'Executing: "getent group ' + command + ' || groupadd ' + command + '"')
|
|||
|
|
self.execute('getent group ' + command + ' || groupadd ' + command)
|
|||
|
|
|
|||
|
|
self.logger.debug(
|
|||
|
|
'Executing: "deluser ' + str(username) + ' ' + command + '"')
|
|||
|
|
self.execute('deluser ' + str(username) + ' ' + command)
|
|||
|
|
|
|||
|
|
self.logger.debug('Adding command to del_user_list')
|
|||
|
|
del_user_list.append(command)
|
|||
|
|
|
|||
|
|
if not os.path.exists(action_id + '.pkla'):
|
|||
|
|
self.logger.debug(
|
|||
|
|
'Creating pkla; command: ' + command + ', action_id: ' + action_id)
|
|||
|
|
self.create_pkla(command, action_id)
|
|||
|
|
|
|||
|
|
self.logger.debug('Executing: "grep "pkexec" ' + str(command_path) + '"')
|
|||
|
|
(result_code, p_out, p_err) = self.execute('grep "pkexec" ' + str(command_path))
|
|||
|
|
|
|||
|
|
if result_code != 0:
|
|||
|
|
# Get resource limit choice
|
|||
|
|
limit_resource_usage = item['limitResourceUsage']
|
|||
|
|
# Get CPU and memory usage parameters
|
|||
|
|
cpu = item['cpu']
|
|||
|
|
memory = item['memory']
|
|||
|
|
|
|||
|
|
# Create wrapper command with resource limits
|
|||
|
|
self.logger.debug(
|
|||
|
|
'Creating wrapper command; command_path: ' + command_path +
|
|||
|
|
', limit_resource_usage: ' + str(limit_resource_usage) + ', cpu: ' +
|
|||
|
|
str(cpu) + ', memory: ' + str(memory))
|
|||
|
|
(wrapper_result, p_out, p_err) = self.create_wrapper_command(command_path,
|
|||
|
|
polkit_status,
|
|||
|
|
limit_resource_usage,
|
|||
|
|
cpu, memory,
|
|||
|
|
command_path_list)
|
|||
|
|
if wrapper_result == 0:
|
|||
|
|
self.logger.debug('Wrapper created successfully.')
|
|||
|
|
self.logger.debug('Adding item result to result_message.')
|
|||
|
|
result_message += command_path + ' | Ayrıcalıksız | Başarılı, '
|
|||
|
|
else:
|
|||
|
|
self.logger.debug('Adding item result to result_message.')
|
|||
|
|
result_message += command_path + ' | Ayrıcalıksız | Başarısız, '
|
|||
|
|
|
|||
|
|
elif polkit_status == 'na':
|
|||
|
|
|
|||
|
|
self.logger.debug(
|
|||
|
|
'polkit_status is: na, no action or pkla will be created.')
|
|||
|
|
|
|||
|
|
# Get resource limit choice
|
|||
|
|
limit_resource_usage = item['limitResourceUsage']
|
|||
|
|
# Get CPU and memory usage parameters
|
|||
|
|
cpu = item['cpu']
|
|||
|
|
memory = item['memory']
|
|||
|
|
|
|||
|
|
# Create wrapper command with resource limits
|
|||
|
|
self.logger.debug(
|
|||
|
|
'Creating wrapper command; command_path: ' + command_path +
|
|||
|
|
', limit_resource_usage: ' + str(limit_resource_usage) + ', cpu: ' +
|
|||
|
|
str(cpu) + ', memory: ' + str(memory))
|
|||
|
|
(wrapper_result, p_out, p_err) = self.create_wrapper_command(command_path, polkit_status,
|
|||
|
|
limit_resource_usage,
|
|||
|
|
cpu, memory, command_path_list)
|
|||
|
|
|
|||
|
|
if wrapper_result == 0:
|
|||
|
|
self.logger.debug('Wrapper created successfully.')
|
|||
|
|
self.logger.debug('Adding item result to result_message.')
|
|||
|
|
result_message += command_path + ' | Ayrıcalıklı | Başarılı, '
|
|||
|
|
else:
|
|||
|
|
self.logger.debug('Adding item result to result_message.')
|
|||
|
|
result_message += command_path + ' | Ayrıcalıklı | Başarısız, '
|
|||
|
|
|
|||
|
|
self.logger.debug('Getting plugin path.')
|
|||
|
|
|
|||
|
|
p_path = self.Ahenk.plugins_path()
|
|||
|
|
|
|||
|
|
self.logger.debug('Creating logout files.')
|
|||
|
|
self.create_logout_files(username, p_path, add_user_list, del_user_list, command_path_list)
|
|||
|
|
|
|||
|
|
self.logger.debug('Creating response.')
|
|||
|
|
self.context.create_response(code=self.get_message_code().POLICY_PROCESSED.value,
|
|||
|
|
message=result_message)
|
|||
|
|
|
|||
|
|
self.logger.debug('User Privilege profile is handled successfully.')
|
|||
|
|
|
|||
|
|
else:
|
|||
|
|
self.logger.debug('Creating response.')
|
|||
|
|
self.context.create_response(code=self.get_message_code().POLICY_WARNING.value,
|
|||
|
|
message='Kullanıcı adı olmadan USER PRIVILEGE profili çalıştırılamaz.')
|
|||
|
|
|
|||
|
|
except Exception as e:
|
|||
|
|
self.context.create_response(code=self.get_message_code().POLICY_ERROR.value,
|
|||
|
|
message='USER PRIVILEGE profili uygulanırken bir hata oluştu.')
|
|||
|
|
self.logger.error(
|
|||
|
|
'A problem occurred while handling User Privilege profile: {0}'.format(str(e)))
|
|||
|
|
|
|||
|
|
def parse_command(self, command_path):
|
|||
|
|
splitted_command_str = str(command_path).split('/')
|
|||
|
|
return splitted_command_str[-1]
|
|||
|
|
|
|||
|
|
def create_action(self, command, command_id, command_path):
|
|||
|
|
command_path += '-ahenk'
|
|||
|
|
action_str = '<?xml version="1.0" encoding="UTF-8"?> \n' \
|
|||
|
|
' <!DOCTYPE policyconfig PUBLIC \n' \
|
|||
|
|
' "-//freedesktop//DTD PolicyKit Policy Configuration 1.0//EN" \n' \
|
|||
|
|
' "http://www.freedesktop.org/standards/PolicyKit/1/policyconfig.dtd"> \n' \
|
|||
|
|
' <policyconfig> \n' \
|
|||
|
|
' <action id="{action_id}"> \n' \
|
|||
|
|
' <message>Please enter the password for this action</message> \n' \
|
|||
|
|
' <icon_name>{cmd}</icon_name> \n' \
|
|||
|
|
' <defaults> \n' \
|
|||
|
|
' <allow_any>auth_admin</allow_any> \n' \
|
|||
|
|
' <allow_inactive>auth_admin</allow_inactive> \n' \
|
|||
|
|
' <allow_active>auth_admin</allow_active> \n' \
|
|||
|
|
' </defaults> \n' \
|
|||
|
|
' <annotate key="org.freedesktop.policykit.exec.path">{cmd_path}</annotate> \n' \
|
|||
|
|
' <annotate key="org.freedesktop.policykit.exec.allow_gui">true</annotate> \n' \
|
|||
|
|
' </action>\n' \
|
|||
|
|
' </policyconfig> \n'.format(action_id=command_id, cmd=command, cmd_path=command_path)
|
|||
|
|
|
|||
|
|
action_file_path = self.polkit_action_folder_path + command_id + '.policy'
|
|||
|
|
action_file = open(action_file_path, 'w')
|
|||
|
|
action_file.write(action_str)
|
|||
|
|
action_file.close()
|
|||
|
|
|
|||
|
|
def create_pkla(self, command, action_id):
|
|||
|
|
pkla_str = '[Normal Staff Permissions]\n' \
|
|||
|
|
'Identity=unix-group:{grp}\n' \
|
|||
|
|
'Action={actionId}\n' \
|
|||
|
|
'ResultAny=no\n' \
|
|||
|
|
'ResultInactive=no\n' \
|
|||
|
|
'ResultActive=yes\n'.format(grp=command, actionId=action_id)
|
|||
|
|
|
|||
|
|
pkla_file_path = self.polkit_pkla_folder_path + action_id + '.pkla'
|
|||
|
|
pkla_file = open(pkla_file_path, 'w')
|
|||
|
|
pkla_file.write(pkla_str)
|
|||
|
|
pkla_file.close()
|
|||
|
|
|
|||
|
|
def create_wrapper_command(self, command_path, polkit_status, limit_resource_usage, cpu, memory, command_path_list):
|
|||
|
|
self.logger.debug(
|
|||
|
|
'Executing: "' + 'mv ' + str(command_path) + ' ' + str(command_path) + '-ahenk"')
|
|||
|
|
(result_code, p_out, p_err) = self.execute(
|
|||
|
|
'mv ' + str(command_path) + ' ' + str(command_path) + '-ahenk')
|
|||
|
|
|
|||
|
|
if result_code == 0:
|
|||
|
|
|
|||
|
|
command_path_str = str(command_path).strip()
|
|||
|
|
|
|||
|
|
line = 'if [ \( "$USER" = "root" \) -o \( "$USER" = "" \) ]; then \n' + str(command_path) + '-ahenk $@'
|
|||
|
|
if limit_resource_usage:
|
|||
|
|
line += '\nelse\n'
|
|||
|
|
line += self.add_resource_limits(command_path, polkit_status, cpu, memory)
|
|||
|
|
else:
|
|||
|
|
if polkit_status == 'na':
|
|||
|
|
line = line + '\nelse\n' + str(command_path) + '-ahenk $@\n'
|
|||
|
|
else:
|
|||
|
|
line += '\nelse\nCOMMAND=\"' + str(command_path) + '-ahenk $@\"\n'
|
|||
|
|
line += 'pkexec --user $USER $COMMAND\n'
|
|||
|
|
line += 'fi'
|
|||
|
|
|
|||
|
|
self.logger.debug('Writing to newly created file: ' + command_path_str)
|
|||
|
|
self.write_file(command_path_str, line)
|
|||
|
|
self.set_permission(command_path_str, "755")
|
|||
|
|
|
|||
|
|
self.logger.debug('Command created successfully ' + command_path)
|
|||
|
|
|
|||
|
|
self.logger.debug('Adding command to command_path_list')
|
|||
|
|
command_path_list.append(command_path)
|
|||
|
|
|
|||
|
|
return 0, p_out, p_err
|
|||
|
|
else:
|
|||
|
|
self.logger.debug('Wrap could not created ' + command_path)
|
|||
|
|
return 1, p_out, p_err
|
|||
|
|
|
|||
|
|
def add_resource_limits(self, command_path, polkit_status, cpu, memory):
|
|||
|
|
self.logger.debug('Adding resource limits to wrapper command.')
|
|||
|
|
lines = ''
|
|||
|
|
if cpu and memory is not None:
|
|||
|
|
self.logger.debug('Adding both CPU and memory limits.')
|
|||
|
|
lines = 'ulimit -Sv ' + str(memory) + '\n'
|
|||
|
|
lines += 'COMMAND=\"' + str(command_path) + '-ahenk $@\"\n'
|
|||
|
|
lines += 'nohup pkexec --user $USER $COMMAND &\n'
|
|||
|
|
lines += 'U_PID=$!\n'
|
|||
|
|
lines += 'cpulimit -p $U_PID -l ' + str(cpu) + ' -z\n'
|
|||
|
|
elif cpu is not None:
|
|||
|
|
self.logger.debug('Adding only CPU limit.')
|
|||
|
|
lines = 'COMMAND=\"' + str(command_path) + '-ahenk $@\"\n'
|
|||
|
|
lines += 'nohup pkexec --user $USER $COMMAND &\n'
|
|||
|
|
lines += 'U_PID=$!\n'
|
|||
|
|
lines += 'cpulimit -p $U_PID -l ' + str(cpu) + ' -z\n'
|
|||
|
|
elif memory is not None:
|
|||
|
|
self.logger.debug('Adding only memory limit.')
|
|||
|
|
lines = 'ulimit -Sv ' + str(memory) + '\n'
|
|||
|
|
lines += 'COMMAND=\"' + str(command_path) + '-ahenk $@\"\n'
|
|||
|
|
lines += 'nohup pkexec --user $USER $COMMAND &\n'
|
|||
|
|
|
|||
|
|
return lines
|
|||
|
|
|
|||
|
|
def create_logout_files(self, username, path_of_plugin, add_user_list, del_user_list, command_path_list):
|
|||
|
|
path_of_changes = path_of_plugin + 'user-privilege/privilege.changes'
|
|||
|
|
if not os.path.exists(path_of_changes):
|
|||
|
|
self.create_directory(path_of_changes)
|
|||
|
|
|
|||
|
|
self.logger.debug('Creating JSON data for user privilege changes.')
|
|||
|
|
data = {'added_user_list': add_user_list, 'deleted_user_list': del_user_list,
|
|||
|
|
'command_path_list': command_path_list}
|
|||
|
|
|
|||
|
|
path_of_user_changes = path_of_changes + '/' + username + '.changes'
|
|||
|
|
self.logger.debug('Creating file: ' + path_of_user_changes)
|
|||
|
|
with open(path_of_user_changes, 'w') as f:
|
|||
|
|
self.logger.debug('Writing JSON data to: ' + path_of_user_changes)
|
|||
|
|
json.dump(data, f)
|
|||
|
|
|
|||
|
|
|
|||
|
|
def handle_policy(profile_data, context):
|
|||
|
|
user_privilege = UserPrivilege(profile_data, context)
|
|||
|
|
user_privilege.handle_policy()
|