import uuid from datetime import datetime, timedelta from django.utils import timezone from django.utils.translation import ugettext_lazy as _ from django.conf import settings from rest_framework.authtoken.models import Token from orgs.mixins.models import OrgModelMixin from common.db import models from common.utils import lazyproperty from common.utils.timezone import as_current_tz class AccessKey(models.Model): id = models.UUIDField(verbose_name='AccessKeyID', primary_key=True, default=uuid.uuid4, editable=False) secret = models.UUIDField(verbose_name='AccessKeySecret', default=uuid.uuid4, editable=False) user = models.ForeignKey(settings.AUTH_USER_MODEL, verbose_name=_('User'), on_delete=models.CASCADE_SIGNAL_SKIP, related_name='access_keys') is_active = models.BooleanField(default=True, verbose_name=_('Active')) date_created = models.DateTimeField(auto_now_add=True, verbose_name=_('Date created')) def get_id(self): return str(self.id) def get_secret(self): return str(self.secret) def get_full_value(self): return '{}:{}'.format(self.id, self.secret) def __str__(self): return str(self.id) class Meta: verbose_name = _("Access key") class PrivateToken(Token): """Inherit from auth token, otherwise migration is boring""" class Meta: verbose_name = _('Private Token') class SSOToken(models.JMSBaseModel): """ 类似腾讯企业邮的 [单点登录](https://exmail.qq.com/qy_mng_logic/doc#10036) 出于安全考虑，这里的 `token` 使用一次随即过期。但我们保留每一个生成过的 `token`。 """ authkey = models.UUIDField(primary_key=True, default=uuid.uuid4, verbose_name=_('Token')) expired = models.BooleanField(default=False, verbose_name=_('Expired')) user = models.ForeignKey('users.User', on_delete=models.CASCADE_SIGNAL_SKIP, verbose_name=_('User'), db_constraint=False) class Meta: verbose_name = _('SSO token') def date_expired_default(): return timezone.now() + timedelta(seconds=settings.CONNECTION_TOKEN_EXPIRATION) class ConnectionToken(OrgModelMixin, models.JMSModel): class Type(models.TextChoices): asset = 'asset', _('Asset') application = 'application', _('Application') type = models.CharField( max_length=16, default=Type.asset, choices=Type.choices, verbose_name=_("Type") ) secret = models.CharField(max_length=64, default='', verbose_name=_("Secret")) date_expired = models.DateTimeField( default=date_expired_default, verbose_name=_("Date expired") ) user = models.ForeignKey( 'users.User', on_delete=models.SET_NULL, verbose_name=_('User'), related_name='connection_tokens', null=True, blank=True ) user_display = models.CharField(max_length=128, default='', verbose_name=_("User display")) system_user = models.ForeignKey( 'assets.SystemUser', on_delete=models.SET_NULL, verbose_name=_('System user'), related_name='connection_tokens', null=True, blank=True ) system_user_display = models.CharField( max_length=128, default='', verbose_name=_("System user display") ) asset = models.ForeignKey( 'assets.Asset', on_delete=models.SET_NULL, verbose_name=_('Asset'), related_name='connection_tokens', null=True, blank=True ) asset_display = models.CharField(max_length=128, default='', verbose_name=_("Asset display")) application = models.ForeignKey( 'applications.Application', on_delete=models.SET_NULL, verbose_name=_('Application'), related_name='connection_tokens', null=True, blank=True ) application_display = models.CharField( max_length=128, default='', verbose_name=_("Application display") ) class Meta: ordering = ('-date_expired',) verbose_name = _('Connection token') permissions = [ ('view_connectiontokensecret', _('Can view connection token secret')) ] @classmethod def get_default_date_expired(cls): return date_expired_default() @property def is_expired(self): return self.date_expired < timezone.now() @property def expire_time(self): interval = self.date_expired - timezone.now() seconds = interval.total_seconds() if seconds < 0: seconds = 0 return int(seconds) def expire(self): self.date_expired = timezone.now() self.save() @property def is_valid(self): return not self.is_expired def is_type(self, tp): return self.type == tp def renewal(self): """ 续期 Token，将来支持用户自定义创建 token 后，续期策略要修改 """ self.date_expired = self.get_default_date_expired() self.save() actions = expired_at = None # actions 和 expired_at 在 check_valid() 中赋值 def check_valid(self): from perms.utils.asset.permission import validate_permission as asset_validate_permission from perms.utils.application.permission import validate_permission as app_validate_permission if self.is_expired: is_valid = False error = _('Connection token expired at: {}').format(as_current_tz(self.date_expired)) return is_valid, error if not self.user: is_valid = False error = _('User not exists') return is_valid, error if not self.user.is_valid: is_valid = False error = _('User invalid, disabled or expired') return is_valid, error if not self.system_user: is_valid = False error = _('System user not exists') return is_valid, error if self.is_type(self.Type.asset): if not self.asset: is_valid = False error = _('Asset not exists') return is_valid, error if not self.asset.is_active: is_valid = False error = _('Asset inactive') return is_valid, error has_perm, actions, expired_at = asset_validate_permission( self.user, self.asset, self.system_user ) if not has_perm: is_valid = False error = _('User has no permission to access asset or permission expired') return is_valid, error self.actions = actions self.expired_at = expired_at elif self.is_type(self.Type.application): if not self.application: is_valid = False error = _('Application not exists') return is_valid, error has_perm, actions, expired_at = app_validate_permission( self.user, self.application, self.system_user ) if not has_perm: is_valid = False error = _('User has no permission to access application or permission expired') return is_valid, error self.actions = actions self.expired_at = expired_at return True, '' @lazyproperty def domain(self): if self.asset: return self.asset.domain if not self.application: return if self.application.category_remote_app: asset = self.application.get_remote_app_asset() domain = asset.domain if asset else None else: domain = self.application.domain return domain @lazyproperty def gateway(self): from assets.models import Domain if not self.domain: return self.domain: Domain return self.domain.random_gateway() @lazyproperty def remote_app(self): if not self.application: return {} if not self.application.category_remote_app: return {} return self.application.get_rdp_remote_app_setting() @lazyproperty def asset_or_remote_app_asset(self): if self.asset: return self.asset if self.application and self.application.category_remote_app: return self.application.get_remote_app_asset() @lazyproperty def cmd_filter_rules(self): from assets.models import CommandFilterRule kwargs = { 'user_id': self.user.id, 'system_user_id': self.system_user.id, } if self.asset: kwargs['asset_id'] = self.asset.id elif self.application: kwargs['application_id'] = self.application_id rules = CommandFilterRule.get_queryset(**kwargs) return rules def load_system_user_auth(self): if self.asset: self.system_user.load_asset_more_auth(self.asset.id, self.user.username, self.user.id) elif self.application: self.system_user.load_app_more_auth(self.application.id, self.user.username, self.user.id) class TempToken(models.JMSModel): username = models.CharField(max_length=128, verbose_name=_("Username")) secret = models.CharField(max_length=64, verbose_name=_("Secret")) verified = models.BooleanField(default=False, verbose_name=_("Verified")) date_verified = models.DateTimeField(null=True, verbose_name=_("Date verified")) date_expired = models.DateTimeField(verbose_name=_("Date expired")) class Meta: verbose_name = _("Temporary token") @property def user(self): from users.models import User return User.objects.filter(username=self.username).first() @property def is_valid(self): not_expired = self.date_expired and self.date_expired > timezone.now() return not self.verified and not_expired class SuperConnectionToken(ConnectionToken): class Meta: proxy = True verbose_name = _("Super connection token")