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usr/share/l.v.e-manager/utils/_[ Not.Writable ]

File://usr/share/l.v.e-manager/utils/cloudlinux_cli_user.py

# coding:utf-8

# Copyright © Cloud Linux GmbH & Cloud Linux Software, Inc 2010-2019 All Rights Reserved
#
# Licensed under CLOUD LINUX LICENSE AGREEMENT
# http://cloudlinux.com/docs/LICENSE.TXT

from __future__ import print_function
from __future__ import division
from __future__ import absolute_import

import json
import logging
import subprocess
import os
import sys

from libcloudlinux import (
    CloudlinuxCliBase, LVEMANAGER_PLUGIN_NAMES, DEFAULT_PLUGIN_NAME, PASSENGER_DEPEND_PLUGINS,
    AllLimitStrategy, NoLimitStrategy, LimitStrategyHeavy, NoCagefsStrategy, LimitStrategyBase, ConfigLimitValue,
)
from clselector.clpassenger_detectlib import is_clpassenger_active
from clcommon import ClPwd
from clcommon.utils import is_litespeed_running
from clcommon.lib.cledition import is_cl_solo_edition
from cldetectlib import get_param_from_file
from clcommon.const import Feature
from clcommon.cpapi import is_panel_feature_supported


CONFIG = '/etc/sysconfig/cloudlinux'
SMART_ADVICE_USER_CLI = '/opt/alt/php-xray/cl-smart-advice-user'
PERCENTS_STATS_MODE_FLAG = '/opt/cloudlinux/flags/enabled-flags.d/percentage-user-stats-mode.flag'

# NB: this logger's out is stderr, result JSON out is stdout - so with active logger web will not work properly
#       because of stderr redirection 2>&1
#       so it is MUST be silent(NOTSET) in normal situation
# also it is not possible to use file logger here - script works inside the cagefs with user's rights
logger = logging.getLogger(__name__)
logger.setLevel(logging.NOTSET)
init_formatter = logging.Formatter('[%(asctime)s] %(funcName)s:%(lineno)s - %(message)s')
cagefs_formatter = logging.Formatter('{cagefs} [%(asctime)s] %(funcName)s:%(lineno)s - %(message)s')
h = logging.StreamHandler()
h.setFormatter(init_formatter)
logger.addHandler(h)


logger.debug('cli start')


class CloudlinuxCliUser(CloudlinuxCliBase):
    limit_strategy: LimitStrategyBase

    def __init__(self):
        self.web_resource_limit_mode = ConfigLimitValue.ALL
        limit_mode = get_param_from_file(CONFIG, 'web_resource_limit_mode', '=', ConfigLimitValue.ALL.value)
        self.web_resource_limit_mode = ConfigLimitValue(limit_mode)
        super(CloudlinuxCliUser, self).__init__()
        self.command_methods.update({
            'spa-get-domains': self.spa_user_domains,
            'spa-get-homedir': self.spa_user_homedir,
            'cloudlinux-snapshots': self.cl_snapshots,
            'spa-get-user-info': self.spa_get_user_info
        })

    def __init_limit_strategy(self):
        """
        Set default strategy from the `CONFIG` values
        """
        if self.skip_cagefs_check:
            logger.handlers[0].setFormatter(cagefs_formatter)     # update log format to easier log review

        # we cannot use cagefs when it is not available
        if not is_panel_feature_supported(Feature.CAGEFS):
            self.limit_strategy = NoCagefsStrategy()
        else:
            self.limit_strategy = {
                ConfigLimitValue.ALL: AllLimitStrategy,
                ConfigLimitValue.HEAVY: LimitStrategyHeavy,
                ConfigLimitValue.UNLIMITED: NoLimitStrategy,
            }.get(self.web_resource_limit_mode, AllLimitStrategy)()
        logger.debug(
            f'Limits strategy inited as {self.limit_strategy.__class__}'
            f'\n\tBecause of:'
            f'\n\tself.web_resource_limit_mode: {self.web_resource_limit_mode}'
        )

    def set_limit_strategy(self, strategy: LimitStrategyBase):
        logger.debug(f'Limit strategy is explicitly set to {strategy.__class__}')
        self.limit_strategy = strategy

    def __check_exclusive_commands(self):
        """
        Check is command currently run without cagefs; commands list is taken from Spa.php `processRequest()`
        This function should be removed in the same task as the `LimitStrategyNoCagefs`
        """
        data = self.request_data
        if data.get('params', {}).get('interpreter') == 'php' or data.get('command') in {
            'cloudlinux-statistics',
            'cloudlinux-quota',
            'cloudlinux-top',
            'cloudlinux-snapshots',
            'cloudlinux-charts',
            'cloudlinux-statsnotifier',
            'spa-get-user-info',
            'cloudlinux-awp-user',
            'cloudlinux-xray-user-manager',
            'spa-get-domains',
            'cpanel-api',
            'cl-smart-advice-user',
        }:
            logger.debug('Executable command found in the exclusive list')
            self.set_limit_strategy(NoCagefsStrategy())

    def drop_permission(self):
        """
        Drop permission to users, if owner of script is user
        :return:
        """
        logger.debug(
            'drop permissions start'
            f'\n\targv is: {sys.argv}'
            f'\n\trequest data is: {self.request_data}'
        )
        self.__init_limit_strategy()
        data = self.request_data
        if data['owner'] != 'user':
            self.exit_with_error("User not allowed")
        super(CloudlinuxCliUser, self).drop_permission()

        args = self.prepair_params_for_command()
        logger.debug(f'prepared args is: {args}')

        if data.get('command'):
            if self.skip_cagefs_check:
                logger.debug('cagefs skipped: --skip-cagefs-check arg found')
            else:
                self.__check_exclusive_commands()
                # if rc is None - script won't enter the cagefs
                # otherwise - command is executed in the cagefs
                rc = self.limit_strategy.execute(data['command'], args, self.request_data)
                if rc is not None:
                    logger.debug(f'command executed inside of the cagefs with rc: {rc}')
                    sys.exit(rc)
                else:
                    logger.debug(f'cagefs skipped: strategy is {self.limit_strategy.__class__}')

        # skip checking plugin availability on spa-get-user-info
        if data.get('command') != 'spa-get-user-info':
            self.check_plugin_availability()
        logger.debug('drop permissons end')

    def spa_user_domains(self):
        print(json.dumps({"result": "success", "list": self.get_user_domains()}))
        sys.exit(0)

    def spa_user_homedir(self):
        print(json.dumps({"result": "success", "homedir": self.get_user_homedir()}))
        sys.exit(0)

    def spa_get_user_info(self):
        try:
            print(json.dumps(
                {
                    "result": "success",
                    "domains": self.get_user_domains(),
                    "homedir": self.get_user_homedir(),
                    "is_litespeed_running": is_litespeed_running(),
                    "is_cl_solo_edition": is_cl_solo_edition(skip_jwt_check=True),
                    "smart_advice": os.path.isfile(SMART_ADVICE_USER_CLI),
                    "is_lve_supported": is_panel_feature_supported(Feature.LVE),
                    "user_stats_mode": self.get_stats_mode(),
                    "server_ip": self.get_server_ip()
                }))
        except:
                self.exit_with_error('Module unavailable')
        sys.exit(0)

    def get_user_domains(self):
        try:
            from clcommon.cpapi import userdomains
        except:
            self.exit_with_error('Module unavailable')
        return [x[0] for x in userdomains(self.user_info['username'])]

    def get_stats_mode(self):
        if os.path.isfile(PERCENTS_STATS_MODE_FLAG):
            return 'percent'
        return 'default'

    def get_user_homedir(self):
        try:
            pwdir = ClPwd().get_homedir(self.user_info['username'])
            return pwdir + "/"
        except KeyError:
            self.exit_with_error('No such user')

    def cl_snapshots(self):
        list_to_request = self.prepair_params_for_command()
        try:
            output = self.run_util('/usr/sbin/lve-read-snapshot', *list_to_request)
        except subprocess.CalledProcessError as processError:
            output = processError.output
        try:
            result = json.loads(output)
        except:
            self.exit_with_error(output)
            return
        self.exit_with_success({'data': result['data']})
        sys.exit(0)

    def check_plugin_availability(self):
        plugin_names = {
            'nodejs_selector': 'Node.js Selector',
            'python_selector': 'Python Selector',

        }
        selector_enabled = True
        manager = None
        try:
            if self.current_plugin_name == 'nodejs_selector':
                from clselect.clselectnodejs.node_manager import NodeManager
                manager = NodeManager()
            if self.current_plugin_name == 'python_selector':
                from clselect.clselectpython.python_manager import PythonManager
                manager = PythonManager()
            if manager:
                selector_enabled =  manager.selector_enabled
        except:
            selector_enabled = False
        if not selector_enabled:
            self.exit_with_error(
                code=503,
                error_id='ERROR.not_available_plugin',
                context={'pluginName': plugin_names.get(self.current_plugin_name, 'Plugin')},
                icon='disabled')
        plugin_available_checker = {
            'nodejs_selector': self._plugin_available_nodejs,
            'python_selector': self._plugin_available_python,
            'php_selector': self._plugin_available_php,
            'resource_usage': self._plugin_available_resource_usage,
        }.get(self.current_plugin_name)
        if plugin_available_checker:
            plugin_available = plugin_available_checker()
        else:
            plugin_available = True

        if not is_clpassenger_active() and self.current_plugin_name in PASSENGER_DEPEND_PLUGINS:
            self.exit_with_error(
                code=503,
                error_id='ERROR.not_available_passenger',
                context={'pluginName': LVEMANAGER_PLUGIN_NAMES.get(self.current_plugin_name, DEFAULT_PLUGIN_NAME)},
                icon='disabled')
        if not plugin_available:
            self.exit_with_error(
                code=503,
                error_id='ERROR.not_available_plugin',
                context={'pluginName': LVEMANAGER_PLUGIN_NAMES.get(self.current_plugin_name, DEFAULT_PLUGIN_NAME)},
                icon='disabled')

    def _plugin_available_nodejs(self):
        try:
            from clselect.clselectnodejs.node_manager import NodeManager
            manager = NodeManager()
            if not manager.selector_enabled or not is_clpassenger_active():
                return False
        except:
            return False
        return True

    def _plugin_available_python(self):
        try:
            from clselect.clselectpython.python_manager import PythonManager
            manager = PythonManager()
            if not manager.selector_enabled or not is_clpassenger_active():
                return False
        except:
            return False
        return True

    def _plugin_available_php(self):
        try:
            from clselect.clselectphp.php_manager import PhpManager
            manager = PhpManager()
            if not manager.selector_enabled:
                return False
        except:
            return False
        return True

    def _plugin_available_resource_usage(self):
        return True

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