Django JWT认证_django的jwt验证

首先pip install djangorestframework-jwt
在配置项中导入自己的sso模块

AUTH_USER_MODEL = "bmiss_sso.User"
REST_FRAMEWORK = {
    "DEFAULT_AUTHENTICATION_CLASSES": (
        "bmiss_sso.authentication.SSOTokenAuthentication",
    ),
    "DEFAULT_PERMISSION_CLASSES": ("rest_framework.permissions.IsAuthenticated",),
    ...
}

SIMPLE_JWT = {
    "AUTH_HEADER_TYPES": ("Token",),
    "ACCESS_TOKEN_LIFETIME": timedelta(minutes=30),
}

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AUTH_USER_MODEL使用自己的user覆盖Django自带的user
REST_FRAMEWORK在此添加自己的认证类
DEFAULT_AUTHENTICATION_CLASSES认证
DEFAULT_PERMISSION_CLASSES权限
SIMPLE_JWT设置token过期时间，以及请求头
在上述项目中，我的sso认证在bmiss_sso的app中的authentication.py文件中SSOTokenAuthentication类中实现

authentication.py

from rest_framework_simplejwt.authentication import JWTAuthentication

_auth_ctx = threading.local()


class SSOTokenAuthentication(JWTAuthentication):
    def authenticate(self, request):
        result = super(SSOTokenAuthentication, self).authenticate(request)
        if result is not None:
            user = result[0]
            setattr(_auth_ctx, "user_id", user.id)
        return result
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在这里继承JWTAuthentication类，即JWT验证类
重写authenticate方法，将user.id赋值给user_id

urls.py

from django.urls import include, path
from rest_framework.routers import DefaultRouter

from bmiss_sso.endpoints.token import (
    KnowledgeBaseIDTokenAPIView,
    TextileEcoSysIDTokenAPIView,
    TokenRefreshView,
)
from bmiss_sso.endpoints.user import UserViewSet

router = DefaultRouter()
router.register(r"users", UserViewSet)

app_name = "bmiss_sso"

urlpatterns = [
    path(r"", include(router.urls)),
    path("token/refresh/", TokenRefreshView.as_view(), name="sso-token-refresh"),
    path(
        r"knowledge_base/token/",
        KnowledgeBaseIDTokenAPIView.as_view(),
        name="sso-knowledge-base-token",
    ),
    path(
        r"textile_ecosystem/token/",
        TextileEcoSysIDTokenAPIView.as_view(),
        name="sso-textile-ecosystem-token",
    ),
]
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token/refresh/ 作用为刷新access token实现为

class TokenRefreshView(jwt_views.TokenRefreshView):
    @swagger_auto_schema(
        operation_summary="刷新access token", responses={200: TokenRefreshResSerializer()}
    )
    def post(self, request, *args, **kwargs):
        return super(TokenRefreshView, self).post(request, *args, **kwargs)
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knowledge_base/token/作用为认证knowledge_base的app的token实现为

class KnowledgeBaseIDTokenAPIView(IDTokenBaseAPIView):
    """
    KnowledgeBase Token获取
    """

    public_key = KB_PUBLIC_KEY

    def get_user_type(self) -> int:
        return UserType.COMPANY

    @swagger_auto_schema(
        operation_summary="KnowledgeBase Token获取",
        query_serializer=IDTokenSerializer(),
        responses={200: TokenReqSerializer()},
    )
    def get(self, request):
        return super(KnowledgeBaseIDTokenAPIView, self).get(request)
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textile_ecosystem/token/作用为认证textile_ecosystem的app的token实现为

class TextileEcoSysIDTokenAPIView(IDTokenBaseAPIView):
    """
    纺织生态圈Token获取
    """

    public_key = TE_PUBLIC_KEY

    def get_user_type(self) -> int:
        return UserType.COMPANY

    @swagger_auto_schema(
        operation_summary="纺织生态圈Token获取",
        query_serializer=IDTokenSerializer(),
        responses={200: TokenReqSerializer()},
    )
    def get(self, request):
        return super(TextileEcoSysIDTokenAPIView, self).get(request)
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在实现时，两个类都继承了IDTokenBaseAPIView，即在认证时所使用的基类，实现为

class IDTokenBaseAPIView(BaseAPIView):
    """
    Token获取

    不同的应用都会在浙江政务服务中心注册并有各自的PUBLIC_KEY对应的`id_token`，
    所以需要用对应的PUBLIC_KEY解析，但是获得的access token是整个项目可用的
    """

    permission_classes = ()
    authentication_classes = ()
    public_key = None

    def get_user_type(self) -> int:
        raise NotImplementedError

    def get_or_create_user(self, user_info: dict) -> User:
        user_type = self.get_user_type()
        try:
            user = User.objects.get(username=user_info["username"])
        except User.DoesNotExist:
            extend_fields = user_info.get("extendFields")
            if isinstance(extend_fields, dict):
                company_name = extend_fields.get("companyName")
                company_address = extend_fields.get("companyAddress")
            else:
                company_name = None
                company_address = None
            user = User.objects.create(
                username=user_info["username"],
                type=user_type,
                name=user_info["name"],
                email=user_info.get("email") or "",
                mobile=user_info.get("mobile"),
                external_id=user_info.get("externalId"),
                ou_id=user_info.get("ouId"),
                ou_name=user_info.get("ouName"),
                zzjw_user_type=user_info.get("userType"),
                company_name=company_name,
                company_address=company_address,
            )
        return user

    def get(self, request):
        q_ser = IDTokenSerializer(data=request.query_params)
        q_ser.is_valid(True)
        id_token = q_ser.validated_data["id_token"]
        user_info = get_user_info(id_token, self.public_key)
        user = self.get_or_create_user(user_info)
        refresh = RefreshToken.for_user(user)
        data = {
            "refresh": str(refresh),
            "access": str(refresh.access_token),
            "name": user.name,
            "company_name": user.company_name,
            "user_type": user.type,
            "user_id": user.id,
        }
        serializer = TokenReqSerializer(data=data)
        serializer.is_valid(True)

        if api_settings.UPDATE_LAST_LOGIN:
            update_last_login(None, user)
        return Response(serializer.validated_data)
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在基类中进行id_token的认证，如果没有此用户的时候创建用户，有的时候返回data信息

get_user_info函数

def get_user_info(id_token, public_key):
    try:
        algo = RSAAlgorithm(RSAAlgorithm.SHA256)
        public_key = algo.prepare_key(public_key)
        token_info = jwt.decode(
            force_bytes(id_token), public_key, verify=True, algorithms=["RS256"]
        )
    except Exception:
        raise exceptions.AuthenticationFailed("令牌认证失败")
    user_info = json.loads(json.dumps(token_info))
    return user_info
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在此函数中。使用token与public_key进行用户认证，进行jwt解析，返回解析出来的用户信息

get_or_create_user函数

    def get_or_create_user(self, user_info: dict) -> User:
        user_type = self.get_user_type()
        try:
            user = User.objects.get(username=user_info["username"])
        except User.DoesNotExist:
            extend_fields = user_info.get("extendFields")
            if isinstance(extend_fields, dict):
                company_name = extend_fields.get("companyName")
                company_address = extend_fields.get("companyAddress")
            else:
                company_name = None
                company_address = None
            user = User.objects.create(
                username=user_info["username"],
                type=user_type,
                name=user_info["name"],
                email=user_info.get("email") or "",
                mobile=user_info.get("mobile"),
                external_id=user_info.get("externalId"),
                ou_id=user_info.get("ouId"),
                ou_name=user_info.get("ouName"),
                zzjw_user_type=user_info.get("userType"),
                company_name=company_name,
                company_address=company_address,
            )
        return user
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在此函数中，对解析出来的用户信息进行判断，判断此时用户表中是否有此用户，有的话就返回查询出来的用户对象，没有就创建后返回

最后在refresh = RefreshToken.for_user(user)使用此方法将此令牌添加到未完成的令牌列表中。最终返回

data = {
            "refresh": str(refresh),
            "access": str(refresh.access_token),
            "name": user.name,
            "company_name": user.company_name,
            "user_type": user.type,
            "user_id": user.id,
        }
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