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411 lines
13 KiB
411 lines
13 KiB
# -*- coding: utf-8 -*-
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#
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import pytz
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import inspect
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from datetime import datetime
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from functools import reduce, partial
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from itertools import groupby
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from uuid import UUID
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from django.utils.translation import gettext_lazy as _
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from django.db.models import QuerySet as DJQuerySet
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from elasticsearch import Elasticsearch
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from elasticsearch.helpers import bulk
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from elasticsearch.exceptions import RequestError, NotFoundError
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from common.utils.common import lazyproperty
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from common.utils import get_logger
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from common.utils.timezone import local_now_date_display, utc_now
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from common.exceptions import JMSException
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from .models import AbstractSessionCommand
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logger = get_logger(__file__)
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class InvalidElasticsearch(JMSException):
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default_code = 'invalid_elasticsearch'
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default_detail = _('Invalid elasticsearch config')
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class NotSupportElasticsearch8(JMSException):
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default_code = 'not_support_elasticsearch8'
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default_detail = _('Not Support Elasticsearch8')
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class CommandStore(object):
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def __init__(self, config):
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self.doc_type = config.get("DOC_TYPE") or '_doc'
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self.index_prefix = config.get('INDEX') or 'jumpserver'
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self.is_index_by_date = bool(config.get('INDEX_BY_DATE'))
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self.exact_fields = {}
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self.match_fields = {}
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hosts = config.get("HOSTS")
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kwargs = config.get("OTHER", {})
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ignore_verify_certs = kwargs.pop('IGNORE_VERIFY_CERTS', False)
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if ignore_verify_certs:
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kwargs['verify_certs'] = None
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self.es = Elasticsearch(hosts=hosts, max_retries=0, **kwargs)
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self.exact_fields = set()
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self.match_fields = {'input', 'risk_level', 'user', 'asset', 'system_user'}
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may_exact_fields = {'session', 'org_id'}
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if self.is_new_index_type():
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self.exact_fields.update(may_exact_fields)
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self.doc_type = '_doc'
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else:
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self.match_fields.update(may_exact_fields)
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self.init_index(config)
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def init_index(self, config):
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if self.is_index_by_date:
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date = local_now_date_display()
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self.index = '%s-%s' % (self.index_prefix, date)
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self.query_index = '%s-alias' % self.index_prefix
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else:
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self.index = config.get("INDEX") or 'jumpserver'
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self.query_index = config.get("INDEX") or 'jumpserver'
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def is_new_index_type(self):
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if not self.ping(timeout=3):
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return False
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info = self.es.info()
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version = info['version']['number'].split('.')[0]
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if version == '8':
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raise NotSupportElasticsearch8
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try:
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# 获取索引信息，如果没有定义，直接返回
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data = self.es.indices.get_mapping(self.index)
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except NotFoundError:
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return False
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try:
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if version == '6':
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# 检测索引是不是新的类型 es6
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properties = data[self.index]['mappings']['data']['properties']
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else:
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# 检测索引是不是新的类型 es7 default index type: _doc
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properties = data[self.index]['mappings']['properties']
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if properties['session']['type'] == 'keyword' \
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and properties['org_id']['type'] == 'keyword':
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return True
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except KeyError:
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return False
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def pre_use_check(self):
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if not self.ping(timeout=3):
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raise InvalidElasticsearch
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self._ensure_index_exists()
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def _ensure_index_exists(self):
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properties = {
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"session": {
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"type": "keyword"
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},
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"org_id": {
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"type": "keyword"
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},
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"@timestamp": {
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"type": "date"
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},
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"timestamp": {
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"type": "long"
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}
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}
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info = self.es.info()
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version = info['version']['number'].split('.')[0]
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if version == '6':
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mappings = {'mappings': {'data': {'properties': properties}}}
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else:
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mappings = {'mappings': {'properties': properties}}
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if self.is_index_by_date:
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mappings['aliases'] = {
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self.query_index: {}
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}
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try:
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self.es.indices.create(self.index, body=mappings)
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return
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except RequestError as e:
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if e.error == 'resource_already_exists_exception':
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logger.warning(e)
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else:
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logger.exception(e)
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@staticmethod
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def make_data(command):
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data = dict(
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user=command["user"], asset=command["asset"],
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system_user=command["system_user"], input=command["input"],
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output=command["output"], risk_level=command["risk_level"],
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session=command["session"], timestamp=command["timestamp"],
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org_id=command["org_id"]
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)
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data["date"] = datetime.fromtimestamp(command['timestamp'], tz=pytz.UTC)
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return data
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def bulk_save(self, command_set, raise_on_error=True):
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actions = []
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for command in command_set:
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data = dict(
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_index=self.index,
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_type=self.doc_type,
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_source=self.make_data(command),
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)
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actions.append(data)
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return bulk(self.es, actions, index=self.index, raise_on_error=raise_on_error)
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def save(self, command):
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"""
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保存命令到数据库
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"""
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data = self.make_data(command)
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return self.es.index(index=self.index, doc_type=self.doc_type, body=data)
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def filter(self, query: dict, from_=None, size=None, sort=None):
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body = self.get_query_body(**query)
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data = self.es.search(
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index=self.query_index, doc_type=self.doc_type, body=body, from_=from_, size=size,
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sort=sort
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)
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source_data = []
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for item in data['hits']['hits']:
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if item:
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item['_source'].update({'id': item['_id']})
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source_data.append(item['_source'])
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return AbstractSessionCommand.from_multi_dict(source_data)
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def count(self, **query):
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body = self.get_query_body(**query)
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data = self.es.count(index=self.query_index, doc_type=self.doc_type, body=body)
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return data["count"]
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def __getattr__(self, item):
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return getattr(self.es, item)
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def all(self):
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"""返回所有数据"""
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raise NotImplementedError("Not support")
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def ping(self, timeout=None):
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try:
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return self.es.ping(request_timeout=timeout)
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except Exception:
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return False
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def get_query_body(self, **kwargs):
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new_kwargs = {}
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for k, v in kwargs.items():
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new_kwargs[k] = str(v) if isinstance(v, UUID) else v
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kwargs = new_kwargs
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index_in_field = 'id__in'
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exact_fields = self.exact_fields
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match_fields = self.match_fields
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match = {}
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exact = {}
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index = {}
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if index_in_field in kwargs:
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index['values'] = kwargs[index_in_field]
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for k, v in kwargs.items():
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if k in exact_fields:
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exact[k] = v
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elif k in match_fields:
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match[k] = v
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# 处理时间
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timestamp__gte = kwargs.get('timestamp__gte')
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timestamp__lte = kwargs.get('timestamp__lte')
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timestamp_range = {}
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if timestamp__gte:
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timestamp_range['gte'] = timestamp__gte
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if timestamp__lte:
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timestamp_range['lte'] = timestamp__lte
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# 处理组织
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should = []
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org_id = match.get('org_id')
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real_default_org_id = '00000000-0000-0000-0000-000000000002'
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root_org_id = '00000000-0000-0000-0000-000000000000'
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if org_id == root_org_id:
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match.pop('org_id')
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elif org_id in (real_default_org_id, ''):
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match.pop('org_id')
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should.append({
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'bool': {
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'must_not': [
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{
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'wildcard': {'org_id': '*'}
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}
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]}
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})
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should.append({'match': {'org_id': real_default_org_id}})
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# 构建 body
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body = {
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'query': {
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'bool': {
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'must': [
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{'match': {k: v}} for k, v in match.items()
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],
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'should': should,
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'filter': [
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{
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'term': {k: v}
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} for k, v in exact.items()
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] + [
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{
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'range': {
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'timestamp': timestamp_range
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}
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}
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] + [
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{
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'ids': {k: v}
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} for k, v in index.items()
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]
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}
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},
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}
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return body
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class QuerySet(DJQuerySet):
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_method_calls = None
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_storage = None
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_command_store_config = None
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_slice = None # (from_, size)
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default_days_ago = 5
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max_result_window = 10000
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def __init__(self, command_store_config):
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self._method_calls = []
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self._command_store_config = command_store_config
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self._storage = CommandStore(command_store_config)
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# 命令列表模糊搜索时报错
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super().__init__()
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@lazyproperty
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def _grouped_method_calls(self):
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_method_calls = {k: list(v) for k, v in groupby(self._method_calls, lambda x: x[0])}
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return _method_calls
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@lazyproperty
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def _filter_kwargs(self):
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_method_calls = self._grouped_method_calls
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filter_calls = _method_calls.get('filter')
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if not filter_calls:
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return {}
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names, multi_args, multi_kwargs = zip(*filter_calls)
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kwargs = reduce(lambda x, y: {**x, **y}, multi_kwargs, {})
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striped_kwargs = {}
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for k, v in kwargs.items():
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k = k.replace('__exact', '')
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k = k.replace('__startswith', '')
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k = k.replace('__icontains', '')
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striped_kwargs[k] = v
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return striped_kwargs
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@lazyproperty
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def _sort(self):
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order_by = self._grouped_method_calls.get('order_by')
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if order_by:
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for call in reversed(order_by):
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fields = call[1]
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if fields:
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field = fields[-1]
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if field.startswith('-'):
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direction = 'desc'
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else:
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direction = 'asc'
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field = field.lstrip('-+')
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sort = f'{field}:{direction}'
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return sort
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def __execute(self):
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_filter_kwargs = self._filter_kwargs
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_sort = self._sort
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from_, size = self._slice or (None, None)
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data = self._storage.filter(_filter_kwargs, from_=from_, size=size, sort=_sort)
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return data
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def __stage_method_call(self, item, *args, **kwargs):
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_clone = self.__clone()
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_clone._method_calls.append((item, args, kwargs))
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return _clone
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def __clone(self):
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uqs = QuerySet(self._command_store_config)
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uqs._method_calls = self._method_calls.copy()
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uqs._slice = self._slice
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uqs.model = self.model
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return uqs
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def count(self, limit_to_max_result_window=True):
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filter_kwargs = self._filter_kwargs
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count = self._storage.count(**filter_kwargs)
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if limit_to_max_result_window:
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count = min(count, self.max_result_window)
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return count
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def __getattribute__(self, item):
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if any((
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item.startswith('__'),
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item in QuerySet.__dict__,
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)):
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return object.__getattribute__(self, item)
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origin_attr = object.__getattribute__(self, item)
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if not inspect.ismethod(origin_attr):
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return origin_attr
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attr = partial(self.__stage_method_call, item)
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return attr
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def __getitem__(self, item):
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max_window = self.max_result_window
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if isinstance(item, slice):
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if self._slice is None:
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clone = self.__clone()
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from_ = item.start or 0
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if item.stop is None:
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size = self.max_result_window - from_
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else:
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size = item.stop - from_
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if from_ + size > max_window:
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if from_ >= max_window:
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from_ = max_window
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size = 0
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else:
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size = max_window - from_
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clone._slice = (from_, size)
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return clone
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return self.__execute()[item]
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def __repr__(self):
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return self.__execute().__repr__()
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def __iter__(self):
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return iter(self.__execute())
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def __len__(self):
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return self.count()
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