UnisKB/apps/common/middleware/cross_domain_middleware.py

# coding=utf-8
"""
    @project: maxkb
    @Author：虎
    @file： cross_domain_middleware.py
    @date：2024/5/8 13:36
    @desc:
"""
from django.db.models import QuerySet
from django.http import HttpResponse
from django.utils.deprecation import MiddlewareMixin

from application.models.api_key_model import ApplicationApiKey
from common.constants.cache_code_constants import CacheCodeConstants
from common.util.cache_util import get_cache


@get_cache(cache_key=lambda secret_key, use_get_data: secret_key,
           use_get_data=lambda secret_key, use_get_data: use_get_data,
           version=CacheCodeConstants.APPLICATION_API_KEY_CACHE.value)
def get_application_api_key(secret_key, use_get_data):
    application_api_key = QuerySet(ApplicationApiKey).filter(secret_key=secret_key).first()
    return {'allow_cross_domain': application_api_key.allow_cross_domain,
            'cross_domain_list': application_api_key.cross_domain_list}


class CrossDomainMiddleware(MiddlewareMixin):

    def process_request(self, request):
        if request.method == 'OPTIONS':
            return HttpResponse(status=200,
                                headers={
                                    "Access-Control-Allow-Origin": "*",
                                    "Access-Control-Allow-Methods": "GET,POST,DELETE,PUT",
                                    "Access-Control-Allow-Headers": "Origin,X-Requested-With,Content-Type,Accept,Authorization,token"})

    def process_response(self, request, response):
        auth = request.META.get('HTTP_AUTHORIZATION')
        origin = request.META.get('HTTP_ORIGIN')
        if auth is not None and str(auth).startswith("application-") and origin is not None:
            application_api_key = get_application_api_key(str(auth), True)
            cross_domain_list = application_api_key.get('cross_domain_list', [])
            allow_cross_domain = application_api_key.get('allow_cross_domain', False)
            if allow_cross_domain:
                response['Access-Control-Allow-Methods'] = 'GET,POST,DELETE,PUT'
                response[
                    'Access-Control-Allow-Headers'] = "Origin,X-Requested-With,Content-Type,Accept,Authorization,token"
                if cross_domain_list is None or len(cross_domain_list) == 0:
                    response['Access-Control-Allow-Origin'] = "*"
                elif cross_domain_list.__contains__(origin):
                    response['Access-Control-Allow-Origin'] = origin
        return response