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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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#
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import logging
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from django.db import models
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from django.utils.translation import ugettext_lazy as _
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from django.core.validators import MinValueValidator, MaxValueValidator
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from django.core.cache import cache
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from common.utils import signer, get_object_or_none
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from .base import BaseUser
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from .asset import Asset
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from .authbook import AuthBook
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__all__ = ['AdminUser', 'SystemUser']
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logger = logging.getLogger(__name__)
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class ProtocolMixin:
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protocol: str
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class Protocol(models.TextChoices):
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ssh = 'ssh', 'SSH'
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rdp = 'rdp', 'RDP'
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telnet = 'telnet', 'Telnet'
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vnc = 'vnc', 'VNC'
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mysql = 'mysql', 'MySQL'
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oracle = 'oracle', 'Oracle'
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mariadb = 'mariadb', 'MariaDB'
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postgresql = 'postgresql', 'PostgreSQL'
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sqlserver = 'sqlserver', 'SQLServer'
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redis = 'redis', 'Redis'
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mongodb = 'mongodb', 'MongoDB'
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k8s = 'k8s', 'K8S'
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SUPPORT_PUSH_PROTOCOLS = [Protocol.ssh, Protocol.rdp]
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ASSET_CATEGORY_PROTOCOLS = [
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Protocol.ssh, Protocol.rdp, Protocol.telnet, Protocol.vnc
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]
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APPLICATION_CATEGORY_REMOTE_APP_PROTOCOLS = [
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Protocol.rdp
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]
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APPLICATION_CATEGORY_DB_PROTOCOLS = [
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Protocol.mysql, Protocol.mariadb, Protocol.oracle,
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Protocol.postgresql, Protocol.sqlserver,
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Protocol.redis, Protocol.mongodb
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]
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APPLICATION_CATEGORY_CLOUD_PROTOCOLS = [
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Protocol.k8s
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]
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APPLICATION_CATEGORY_PROTOCOLS = [
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*APPLICATION_CATEGORY_REMOTE_APP_PROTOCOLS,
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*APPLICATION_CATEGORY_DB_PROTOCOLS,
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*APPLICATION_CATEGORY_CLOUD_PROTOCOLS
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]
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@property
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def is_protocol_support_push(self):
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return self.protocol in self.SUPPORT_PUSH_PROTOCOLS
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@classmethod
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def get_protocol_by_application_type(cls, app_type):
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from applications.const import AppType
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if app_type in cls.APPLICATION_CATEGORY_PROTOCOLS:
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protocol = app_type
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elif app_type in AppType.remote_app_types():
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protocol = cls.Protocol.rdp
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else:
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protocol = None
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return protocol
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@property
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def can_perm_to_asset(self):
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return self.protocol in self.ASSET_CATEGORY_PROTOCOLS
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@property
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def is_asset_protocol(self):
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return self.protocol in self.ASSET_CATEGORY_PROTOCOLS
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class AuthMixin:
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username_same_with_user: bool
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protocol: str
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ASSET_CATEGORY_PROTOCOLS: list
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login_mode: str
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LOGIN_MANUAL: str
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id: str
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username: str
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password: str
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private_key: str
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public_key: str
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def set_temp_auth(self, asset_or_app_id, user_id, auth, ttl=300):
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if not auth:
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raise ValueError('Auth not set')
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key = 'TEMP_PASSWORD_{}_{}_{}'.format(self.id, asset_or_app_id, user_id)
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logger.debug(f'Set system user temp auth: {key}')
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cache.set(key, auth, ttl)
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def get_temp_auth(self, asset_or_app_id, user_id):
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key = 'TEMP_PASSWORD_{}_{}_{}'.format(self.id, asset_or_app_id, user_id)
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logger.debug(f'Get system user temp auth: {key}')
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password = cache.get(key)
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return password
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def _clean_auth_info_if_manual_login_mode(self):
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if self.login_mode == self.LOGIN_MANUAL:
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self.password = ''
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self.private_key = ''
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self.public_key = ''
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def _load_tmp_auth_if_has(self, asset_or_app_id, user_id):
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if self.login_mode != self.LOGIN_MANUAL:
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return
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if not asset_or_app_id or not user_id:
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return
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auth = self.get_temp_auth(asset_or_app_id, user_id)
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if not auth:
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return
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username = auth.get('username')
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password = auth.get('password')
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if username:
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self.username = username
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if password:
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self.password = password
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def load_app_more_auth(self, app_id=None, username=None, user_id=None):
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self._clean_auth_info_if_manual_login_mode()
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# 加载临时认证信息
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if self.login_mode == self.LOGIN_MANUAL:
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self._load_tmp_auth_if_has(app_id, user_id)
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return
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# 更新用户名
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from users.models import User
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user = get_object_or_none(User, pk=user_id) if user_id else None
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if self.username_same_with_user:
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if user and not username:
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_username = user.username
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else:
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_username = username
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self.username = _username
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def load_asset_special_auth(self, asset, username=''):
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"""
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AuthBook 的数据状态
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| asset | systemuser | username |
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1 | * | * | x |
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2 | * | x | * |
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当前 AuthBook 只有以上两种状态，systemuser 与 username 不会并存。
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正常的资产与系统用户关联产生的是第1种状态，改密则产生第2种状态。改密之后
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只有 username 而没有 systemuser 。
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Freq: 关联同一资产的多个系统用户指定同一用户名时，修改用户密码会影响所有系统用户
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这里有一个不对称的行为，同名系统用户密码覆盖
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当有相同 username 的多个系统用户时，有改密动作之后，所有的同名系统用户都使用最后
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一次改动，但如果没有发生过改密，同名系统用户使用的密码还是各自的。
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"""
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if username == '':
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username = self.username
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authbook = AuthBook.objects.filter(
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asset=asset, username=username, systemuser__isnull=True
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).order_by('-date_created').first()
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if not authbook:
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authbook = AuthBook.objects.filter(
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asset=asset, systemuser=self
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).order_by('-date_created').first()
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if not authbook:
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return None
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authbook.load_auth()
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self.password = authbook.password
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self.private_key = authbook.private_key
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self.public_key = authbook.public_key
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def load_asset_more_auth(self, asset_id=None, username=None, user_id=None):
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from users.models import User
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self._clean_auth_info_if_manual_login_mode()
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# 加载临时认证信息
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if self.login_mode == self.LOGIN_MANUAL:
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self._load_tmp_auth_if_has(asset_id, user_id)
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return
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# 更新用户名
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user = get_object_or_none(User, pk=user_id) if user_id else None
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if self.username_same_with_user:
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if user and not username:
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_username = user.username
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else:
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_username = username
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self.username = _username
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# 加载某个资产的特殊配置认证信息
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asset = get_object_or_none(Asset, pk=asset_id) if asset_id else None
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if not asset:
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logger.debug('Asset not found, pass')
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return
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self.load_asset_special_auth(asset, self.username)
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class SystemUser(ProtocolMixin, AuthMixin, BaseUser):
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LOGIN_AUTO = 'auto'
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LOGIN_MANUAL = 'manual'
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LOGIN_MODE_CHOICES = (
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(LOGIN_AUTO, _('Automatic managed')),
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(LOGIN_MANUAL, _('Manually input'))
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)
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class Type(models.TextChoices):
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common = 'common', _('Common user')
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admin = 'admin', _('Admin user')
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username_same_with_user = models.BooleanField(default=False, verbose_name=_("Username same with user"))
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nodes = models.ManyToManyField('assets.Node', blank=True, verbose_name=_("Nodes"))
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assets = models.ManyToManyField(
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'assets.Asset', blank=True, verbose_name=_("Assets"),
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through='assets.AuthBook', through_fields=['systemuser', 'asset'],
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related_name='system_users'
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)
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users = models.ManyToManyField('users.User', blank=True, verbose_name=_("Users"))
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groups = models.ManyToManyField('users.UserGroup', blank=True, verbose_name=_("User groups"))
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type = models.CharField(max_length=16, choices=Type.choices, default=Type.common, verbose_name=_('Type'))
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priority = models.IntegerField(default=81, verbose_name=_("Priority"), help_text=_("1-100, the lower the value will be match first"), validators=[MinValueValidator(1), MaxValueValidator(100)])
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protocol = models.CharField(max_length=16, choices=ProtocolMixin.Protocol.choices, default='ssh', verbose_name=_('Protocol'))
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auto_push = models.BooleanField(default=True, verbose_name=_('Auto push'))
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sudo = models.TextField(default='/bin/whoami', verbose_name=_('Sudo'))
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shell = models.CharField(max_length=64, default='/bin/bash', verbose_name=_('Shell'))
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login_mode = models.CharField(choices=LOGIN_MODE_CHOICES, default=LOGIN_AUTO, max_length=10, verbose_name=_('Login mode'))
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sftp_root = models.CharField(default='tmp', max_length=128, verbose_name=_("SFTP Root"))
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token = models.TextField(default='', verbose_name=_('Token'))
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home = models.CharField(max_length=4096, default='', verbose_name=_('Home'), blank=True)
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system_groups = models.CharField(default='', max_length=4096, verbose_name=_('System groups'), blank=True)
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ad_domain = models.CharField(default='', max_length=256)
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# linux su 命令 (switch user)
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su_enabled = models.BooleanField(default=False, verbose_name=_('User switch'))
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su_from = models.ForeignKey('self', on_delete=models.SET_NULL, related_name='su_to', null=True, verbose_name=_("Switch from"))
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def __str__(self):
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username = self.username
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if self.username_same_with_user:
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username = '*'
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return '{0.name}({1})'.format(self, username)
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@property
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def nodes_amount(self):
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return self.nodes.all().count()
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@property
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def login_mode_display(self):
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return self.get_login_mode_display()
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def is_need_push(self):
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if self.auto_push and self.is_protocol_support_push:
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return True
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else:
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return False
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@property
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def is_admin_user(self):
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return self.type == self.Type.admin
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@property
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def is_need_cmd_filter(self):
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return self.protocol not in [self.Protocol.rdp, self.Protocol.vnc]
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@property
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def is_need_test_asset_connective(self):
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return self.protocol in self.ASSET_CATEGORY_PROTOCOLS
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@property
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def cmd_filter_rules(self):
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from .cmd_filter import CommandFilterRule
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rules = CommandFilterRule.objects.filter(
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filter__in=self.cmd_filters.all()
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).distinct()
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return rules
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def is_command_can_run(self, command):
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for rule in self.cmd_filter_rules:
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action, matched_cmd = rule.match(command)
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if action == rule.ActionChoices.allow:
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return True, None
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elif action == rule.ActionChoices.deny:
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return False, matched_cmd
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return True, None
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def get_all_assets(self):
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from assets.models import Node
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nodes_keys = self.nodes.all().values_list('key', flat=True)
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asset_ids = set(self.assets.all().values_list('id', flat=True))
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nodes_asset_ids = Node.get_nodes_all_asset_ids_by_keys(nodes_keys)
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asset_ids.update(nodes_asset_ids)
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assets = Asset.objects.filter(id__in=asset_ids)
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return assets
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def add_related_assets(self, assets_or_ids):
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self.assets.add(*tuple(assets_or_ids))
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self.add_related_assets_to_su_from_if_need(assets_or_ids)
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def add_related_assets_to_su_from_if_need(self, assets_or_ids):
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if self.protocol not in [self.Protocol.ssh.value]:
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return
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if not self.su_enabled:
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return
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if not self.su_from:
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return
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if self.su_from.protocol != self.protocol:
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return
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self.su_from.assets.add(*tuple(assets_or_ids))
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class Meta:
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ordering = ['name']
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unique_together = [('name', 'org_id')]
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verbose_name = _("System user")
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permissions = [
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('view_systemuserasset', _('Can view system user asset')),
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('add_systemuserasset', _('Can add asset to system user')),
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('remove_systemuserasset', _('Can remove system user asset')),
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('match_systemuser', _('Can match system user')),
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]
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# Deprecated: 准备废弃
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class AdminUser(BaseUser):
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"""
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A privileged user that ansible can use it to push system user and so on
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"""
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BECOME_METHOD_CHOICES = (
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('sudo', 'sudo'),
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('su', 'su'),
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)
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become = models.BooleanField(default=True)
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become_method = models.CharField(choices=BECOME_METHOD_CHOICES, default='sudo', max_length=4)
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become_user = models.CharField(default='root', max_length=64)
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_become_pass = models.CharField(default='', blank=True, max_length=128)
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CONNECTIVITY_CACHE_KEY = '_ADMIN_USER_CONNECTIVE_{}'
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_prefer = "admin_user"
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def __str__(self):
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return self.name
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@property
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def become_pass(self):
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password = signer.unsign(self._become_pass)
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if password:
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return password
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else:
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return ""
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@become_pass.setter
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def become_pass(self, password):
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self._become_pass = signer.sign(password)
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@property
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def become_info(self):
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if self.become:
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info = {
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"method": self.become_method,
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"user": self.become_user,
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"pass": self.become_pass,
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}
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else:
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info = None
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return info
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class Meta:
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ordering = ['name']
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unique_together = [('name', 'org_id')]
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verbose_name = _("Admin user")
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