#!/usr/bin/env python # -*- encoding: utf-8 -*- import json import logging import time from datetime import datetime from aliyunsdkcore.client import AcsClient from aliyunsdkcore.request import CommonRequest from alibabacloud_sls20201230.client import Client as Sls20201230Client from alibabacloud_tea_openapi import models as open_api_models from alibabacloud_sls20201230 import models as sls_20201230_models from alibabacloud_tea_util import models as util_models from alibabacloud_tea_util.client import Client as UtilClient """ 该函数基于config配置变更触发。 多账号场景下，通过actiontrail获取角色是否有审计日志，并作为合规判断的逻辑依据，有日志合规，没有不合规。 """ logger = logging.getLogger() # 合规类型 COMPLIANCE_TYPE_COMPLIANT = 'COMPLIANT' COMPLIANCE_TYPE_NON_COMPLIANT = 'NON_COMPLIANT' COMPLIANCE_TYPE_NOT_APPLICABLE = 'NOT_APPLICABLE' # 资源配置推送类型 CONFIGURATION_TYPE_COMMON = 'COMMON' CONFIGURATION_TYPE_OVERSIZE = 'OVERSIZE' CONFIGURATION_TYPE_NONE = 'NONE' # Config api endpoint, International sites use ap-southeast-1 and config.ap-southeast-1.aliyuncs.com CONFIG_SERVICE_REGION = 'cn-shanghai' CONFIG_SERVICE_ENDPOINT = 'config.cn-shanghai.aliyuncs.com' AK = '******' SK = '******' # 入口方法 def handler(event, context): evt = validate_event(event) if not evt: return None rule_parameters = evt.get('ruleParameters') result_token = evt.get('resultToken') ordering_timestamp = evt.get('orderingTimestamp') invoking_event = evt.get('invokingEvent') configuration_item = invoking_event.get('configurationItem') account_id = configuration_item.get('accountId') resource_id = configuration_item.get('resourceId') resource_name = configuration_item.get('resourceName') resource_type = configuration_item.get('resourceType') region_id = configuration_item.get('regionId') compliance_type, annotation = evaluate_configuration_item(rule_parameters, configuration_item) evaluations = [ { 'accountId': account_id, 'complianceResourceId': resource_id, 'complianceResourceName': resource_name, 'complianceResourceType': resource_type, 'complianceRegionId': region_id, 'orderingTimestamp': ordering_timestamp, 'complianceType': compliance_type, 'annotation': annotation } ] put_evaluations(context, result_token, evaluations) return evaluations # 实现资源评估逻辑 def evaluate_configuration_item(rule_parameters, configuration_item): compliance_type = COMPLIANCE_TYPE_NON_COMPLIANT annotation = None full_configuration = configuration_item['configuration'] configuration = parse_json(full_configuration) resource_id = configuration_item["resourceId"] sls_region_id, sls_project, sls_logstore = actiontrail_get_default_trail(resource_id) ## 只查看第一页是否有数据 cnt = sls_get_logs_cnt(sls_region_id, sls_project, sls_logstore, resource_id) if cnt and cnt > 0: compliance_type = COMPLIANCE_TYPE_COMPLIANT annotation = json.dumps({'configuration': '', 'desiredValue': '', 'operator': ''}) else: annotation = json.dumps({'configuration': 'RAM Role have no activity within X (90) days', 'desiredValue': '', 'operator': ''}) return compliance_type, annotation def validate_event(event): if not event: logger.error('Event is empty.') evt = parse_json(event) logger.info('Loading event: %s .' % evt) if 'resultToken' not in evt: logger.error('ResultToken is empty.') return None if 'ruleParameters' not in evt: logger.error('RuleParameters is empty.') return None if 'invokingEvent' not in evt: logger.error('InvokingEvent is empty.') return None return evt def parse_json(content): try: return json.loads(content) except Exception as e: logger.error('Parse content:{} to json error:{}.'.format(content, e)) return None def put_evaluations(context, result_token, evaluations): client = AcsClient(AK, SK, CONFIG_SERVICE_REGION) request = CommonRequest() request.set_domain(CONFIG_SERVICE_ENDPOINT) request.set_version('2019-01-08') request.set_action_name('PutEvaluations') request.add_body_params('ResultToken', result_token) request.add_body_params('Evaluations', evaluations) request.set_method('POST') try: response = client.do_action_with_exception(request) logger.info('PutEvaluations with request: {}, response: {}.'.format(request, response)) except Exception as e: logger.error('PutEvaluations error: %s' % e) ## 需要设置配置审计跟踪并设置为模版跟踪，使用sls的高级搜索能力 def actiontrail_get_default_trail(role_name): client = AcsClient(AK, SK, 'cn-hangzhou') request = CommonRequest() request.set_accept_format('json') request.set_domain('actiontrail.cn-hangzhou.aliyuncs.com') request.set_method('POST') request.set_protocol_type('https') # https | http request.set_version('2020-07-06') request.set_action_name('GetDefaultTrail') try: response = client.do_action_with_exception(request) resource_result = str(response, encoding='utf-8') json_res = json.loads(resource_result) actiontrail_name_list = json_res['Name'] if actiontrail_name_list: request = CommonRequest() request.set_accept_format('json') request.set_domain('actiontrail.cn-hangzhou.aliyuncs.com') request.set_method('POST') request.set_protocol_type('https') # https | http request.set_version('2020-07-06') request.set_action_name('DescribeTrails') request.add_query_param('NameList', actiontrail_name_list) response = client.do_action_with_exception(request) resource_result = str(response, encoding='utf-8') trail_detail = json.loads(resource_result)['TrailList'][0] sls_project_arn = trail_detail['SlsProjectArn'] region_id = str.split(sls_project_arn, ':')[2] sls_project = str.split(sls_project_arn, '/')[1] sls_logstore = 'actiontrail_' + str.split(trail_detail['TrailArn'], '/')[1] is_organization_trail = trail_detail['IsOrganizationTrail'] ## 开启高级搜索，且为多账号 if is_organization_trail: return region_id, sls_project, sls_logstore except Exception as e: logger.error('DescribeTrails error: %s' % e) def sls_get_logs_cnt(region_id, project, logstore, resource_id): config = open_api_models.Config(access_key_id=AK, access_key_secret=SK) config.endpoint = region_id + '.log.aliyuncs.com' client = Sls20201230Client(config) x_days = 90 to_timestamp = int(round(time.time())) from_timestamp = to_timestamp - x_days * 24 * 60 * 60 get_logs_request = sls_20201230_models.GetLogsRequest( from_=from_timestamp, to=to_timestamp, query='event.userIdentity.principalId: ' + resource_id # event.userIdentity.principalId: 389051450072xxxxxx ) try: runtime = util_models.RuntimeOptions() headers = {} try: response = client.get_logs_with_options(project, logstore, get_logs_request, headers, runtime) events_cnt = len(response.body) return events_cnt except Exception as error: UtilClient.assert_as_string(error.message) except Exception as e: logger.error('GetLogsRequest error: %s' % e)