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import abc
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import os
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import json
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import base64
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import urllib.parse
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from django.http import HttpResponse
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from django.shortcuts import get_object_or_404
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from rest_framework.exceptions import PermissionDenied
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from rest_framework.decorators import action
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from rest_framework.response import Response
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from rest_framework import status
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from rest_framework.request import Request
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from common.drf.api import JMSModelViewSet
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from common.http import is_true
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from orgs.mixins.api import RootOrgViewMixin
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from perms.models.base import Action
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from terminal.models import EndpointRule
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from ..serializers import (
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ConnectionTokenSerializer, ConnectionTokenSecretSerializer,
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SuperConnectionTokenSerializer, ConnectionTokenDisplaySerializer,
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)
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from ..models import ConnectionToken
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__all__ = ['ConnectionTokenViewSet', 'SuperConnectionTokenViewSet']
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class ConnectionTokenMixin:
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request: Request
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@staticmethod
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def check_token_valid(token: ConnectionToken):
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is_valid, error = token.check_valid()
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if not is_valid:
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raise PermissionDenied(error)
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@abc.abstractmethod
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def get_request_resource_user(self, serializer):
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raise NotImplementedError
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def get_request_resources(self, serializer):
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user = self.get_request_resource_user(serializer)
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asset = serializer.validated_data.get('asset')
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application = serializer.validated_data.get('application')
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system_user = serializer.validated_data.get('system_user')
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return user, asset, application, system_user
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@staticmethod
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def check_user_has_resource_permission(user, asset, application, system_user):
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from perms.utils.asset import has_asset_system_permission
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from perms.utils.application import has_application_system_permission
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if asset and not has_asset_system_permission(user, asset, system_user):
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error = f'User not has this asset and system user permission: ' \
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f'user={user.id} system_user={system_user.id} asset={asset.id}'
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raise PermissionDenied(error)
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if application and not has_application_system_permission(user, application, system_user):
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error = f'User not has this application and system user permission: ' \
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f'user={user.id} system_user={system_user.id} application={application.id}'
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raise PermissionDenied(error)
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def get_smart_endpoint(self, protocol, asset=None, application=None):
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if asset:
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target_ip = asset.get_target_ip()
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elif application:
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target_ip = application.get_target_ip()
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else:
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target_ip = ''
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endpoint = EndpointRule.match_endpoint(target_ip, protocol, self.request)
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return endpoint
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@staticmethod
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def parse_env_bool(env_key, env_default, true_value, false_value):
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return true_value if is_true(os.getenv(env_key, env_default)) else false_value
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def get_client_protocol_data(self, token: ConnectionToken):
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from assets.models import SystemUser
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protocol = token.system_user.protocol
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username = token.user.username
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rdp_config = ssh_token = ''
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if protocol == SystemUser.Protocol.rdp:
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filename, rdp_config = self.get_rdp_file_info(token)
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elif protocol == SystemUser.Protocol.ssh:
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filename, ssh_token = self.get_ssh_token(token)
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else:
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raise ValueError('Protocol not support: {}'.format(protocol))
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return {
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"filename": filename,
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"protocol": protocol,
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"username": username,
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"token": ssh_token,
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"config": rdp_config
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}
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def get_rdp_file_info(self, token: ConnectionToken):
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rdp_options = {
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'full address:s': '',
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'username:s': '',
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# 'screen mode id:i': '1',
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# 'desktopwidth:i': '1280',
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# 'desktopheight:i': '800',
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'use multimon:i': '0',
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'session bpp:i': '32',
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'audiomode:i': '0',
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'disable wallpaper:i': '0',
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'disable full window drag:i': '0',
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'disable menu anims:i': '0',
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'disable themes:i': '0',
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'alternate shell:s': '',
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'shell working directory:s': '',
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'authentication level:i': '2',
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'connect to console:i': '0',
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'disable cursor setting:i': '0',
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'allow font smoothing:i': '1',
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'allow desktop composition:i': '1',
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'redirectprinters:i': '0',
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'prompt for credentials on client:i': '0',
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'autoreconnection enabled:i': '1',
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'bookmarktype:i': '3',
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'use redirection server name:i': '0',
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'smart sizing:i': '1',
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# 'drivestoredirect:s': '*',
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# 'domain:s': ''
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# 'alternate shell:s:': '||MySQLWorkbench',
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# 'remoteapplicationname:s': 'Firefox',
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# 'remoteapplicationcmdline:s': '',
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}
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# 设置磁盘挂载
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drives_redirect = is_true(self.request.query_params.get('drives_redirect'))
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if drives_redirect:
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actions = Action.choices_to_value(token.actions)
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if actions & Action.UPDOWNLOAD == Action.UPDOWNLOAD:
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rdp_options['drivestoredirect:s'] = '*'
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# 设置全屏
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full_screen = is_true(self.request.query_params.get('full_screen'))
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rdp_options['screen mode id:i'] = '2' if full_screen else '1'
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# 设置 RDP Server 地址
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endpoint = self.get_smart_endpoint(
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protocol='rdp', asset=token.asset, application=token.application
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)
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rdp_options['full address:s'] = f'{endpoint.host}:{endpoint.rdp_port}'
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# 设置用户名
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rdp_options['username:s'] = '{}|{}'.format(token.user.username, str(token.id))
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if token.system_user.ad_domain:
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rdp_options['domain:s'] = token.system_user.ad_domain
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# 设置宽高
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height = self.request.query_params.get('height')
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width = self.request.query_params.get('width')
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if width and height:
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rdp_options['desktopwidth:i'] = width
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rdp_options['desktopheight:i'] = height
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rdp_options['winposstr:s:'] = f'0,1,0,0,{width},{height}'
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# 设置其他选项
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rdp_options['session bpp:i'] = os.getenv('JUMPSERVER_COLOR_DEPTH', '32')
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rdp_options['audiomode:i'] = self.parse_env_bool('JUMPSERVER_DISABLE_AUDIO', 'false', '2', '0')
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if token.asset:
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name = token.asset.hostname
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elif token.application and token.application.category_remote_app:
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app = '||jmservisor'
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name = token.application.name
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rdp_options['remoteapplicationmode:i'] = '1'
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rdp_options['alternate shell:s'] = app
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rdp_options['remoteapplicationprogram:s'] = app
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rdp_options['remoteapplicationname:s'] = name
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else:
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name = '*'
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prefix_name = f'{token.user.username}-{name}'
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filename = self.get_connect_filename(prefix_name)
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content = ''
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for k, v in rdp_options.items():
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content += f'{k}:{v}\n'
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return filename, content
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@staticmethod
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def get_connect_filename(prefix_name):
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prefix_name = prefix_name.replace('/', '_')
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prefix_name = prefix_name.replace('\\', '_')
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prefix_name = prefix_name.replace('.', '_')
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filename = f'{prefix_name}-jumpserver'
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filename = urllib.parse.quote(filename)
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return filename
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def get_ssh_token(self, token: ConnectionToken):
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if token.asset:
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name = token.asset.hostname
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elif token.application:
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name = token.application.name
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else:
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name = '*'
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prefix_name = f'{token.user.username}-{name}'
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filename = self.get_connect_filename(prefix_name)
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endpoint = self.get_smart_endpoint(
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protocol='ssh', asset=token.asset, application=token.application
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)
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data = {
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'ip': endpoint.host,
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'port': str(endpoint.ssh_port),
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'username': 'JMS-{}'.format(str(token.id)),
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'password': token.secret
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}
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token = json.dumps(data)
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return filename, token
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class ConnectionTokenViewSet(ConnectionTokenMixin, RootOrgViewMixin, JMSModelViewSet):
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filterset_fields = (
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'type', 'user_display', 'system_user_display',
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'application_display', 'asset_display'
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)
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search_fields = filterset_fields
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serializer_classes = {
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'default': ConnectionTokenSerializer,
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'list': ConnectionTokenDisplaySerializer,
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'retrieve': ConnectionTokenDisplaySerializer,
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'get_secret_detail': ConnectionTokenSecretSerializer,
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}
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rbac_perms = {
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'retrieve': 'authentication.view_connectiontoken',
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'create': 'authentication.add_connectiontoken',
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'expire': 'authentication.add_connectiontoken',
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'get_secret_detail': 'authentication.view_connectiontokensecret',
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'get_rdp_file': 'authentication.add_connectiontoken',
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'get_client_protocol_url': 'authentication.add_connectiontoken',
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}
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def get_queryset(self):
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return ConnectionToken.objects.filter(user=self.request.user)
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def get_request_resource_user(self, serializer):
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return self.request.user
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def get_object(self):
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if self.request.user.is_service_account:
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# TODO: 组件获取 token 详情，将来放在 Super-connection-token API 中
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obj = get_object_or_404(ConnectionToken, pk=self.kwargs.get('pk'))
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else:
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obj = super(ConnectionTokenViewSet, self).get_object()
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return obj
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def create_connection_token(self):
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data = self.request.query_params if self.request.method == 'GET' else self.request.data
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serializer = self.get_serializer(data=data)
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serializer.is_valid(raise_exception=True)
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self.perform_create(serializer)
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token: ConnectionToken = serializer.instance
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return token
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def perform_create(self, serializer):
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user, asset, application, system_user = self.get_request_resources(serializer)
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self.check_user_has_resource_permission(user, asset, application, system_user)
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return super(ConnectionTokenViewSet, self).perform_create(serializer)
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@action(methods=['POST'], detail=False, url_path='secret-info/detail')
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def get_secret_detail(self, request, *args, **kwargs):
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# 非常重要的 api，在逻辑层再判断一下，双重保险
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perm_required = 'authentication.view_connectiontokensecret'
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if not request.user.has_perm(perm_required):
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raise PermissionDenied('Not allow to view secret')
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token_id = request.data.get('token') or ''
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token = get_object_or_404(ConnectionToken, pk=token_id)
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self.check_token_valid(token)
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token.load_system_user_auth()
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serializer = self.get_serializer(instance=token)
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return Response(serializer.data, status=status.HTTP_200_OK)
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@action(methods=['POST', 'GET'], detail=False, url_path='rdp/file')
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def get_rdp_file(self, request, *args, **kwargs):
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token = self.create_connection_token()
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self.check_token_valid(token)
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filename, content = self.get_rdp_file_info(token)
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filename = '{}.rdp'.format(filename)
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response = HttpResponse(content, content_type='application/octet-stream')
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response['Content-Disposition'] = 'attachment; filename*=UTF-8\'\'%s' % filename
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return response
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@action(methods=['POST', 'GET'], detail=False, url_path='client-url')
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def get_client_protocol_url(self, request, *args, **kwargs):
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token = self.create_connection_token()
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self.check_token_valid(token)
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try:
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protocol_data = self.get_client_protocol_data(token)
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except ValueError as e:
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return Response(data={'error': str(e)}, status=status.HTTP_400_BAD_REQUEST)
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protocol_data = json.dumps(protocol_data).encode()
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protocol_data = base64.b64encode(protocol_data).decode()
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data = {
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'url': 'jms://{}'.format(protocol_data)
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}
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return Response(data=data)
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@action(methods=['PATCH'], detail=True)
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def expire(self, request, *args, **kwargs):
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instance = self.get_object()
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instance.expire()
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return Response(status=status.HTTP_204_NO_CONTENT)
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class SuperConnectionTokenViewSet(ConnectionTokenViewSet):
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serializer_classes = {
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'default': SuperConnectionTokenSerializer,
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}
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rbac_perms = {
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'create': 'authentication.add_superconnectiontoken',
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'renewal': 'authentication.add_superconnectiontoken'
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}
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def get_request_resource_user(self, serializer):
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return serializer.validated_data.get('user')
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@action(methods=['PATCH'], detail=False)
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def renewal(self, request, *args, **kwargs):
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from common.utils.timezone import as_current_tz
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token_id = request.data.get('token') or ''
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token = get_object_or_404(ConnectionToken, pk=token_id)
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date_expired = as_current_tz(token.date_expired)
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if token.is_expired:
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raise PermissionDenied('Token is expired at: {}'.format(date_expired))
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token.renewal()
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data = {
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'ok': True,
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'msg': f'Token is renewed, date expired: {date_expired}'
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}
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return Response(data=data, status=status.HTTP_200_OK)
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