echo-as-json.py (1110B)
1 import json 2 3 from wptserve.utils import isomorphic_decode 4 5 def main(request, response): 6 headers = [(b"Content-Type", b"application/json"), 7 (b"Access-Control-Allow-Credentials", b"true")] 8 9 if b"origin" in request.headers: 10 headers.append((b"Access-Control-Allow-Origin", request.headers[b"origin"])) 11 12 body = u"" 13 14 # If we're in a preflight, verify that `Sec-Fetch-Mode` is `cors`. 15 if request.method == u'OPTIONS': 16 if request.headers.get(b"sec-fetch-mode") != b"cors": 17 return (403, b"Failed"), [], body 18 19 headers.append((b"Access-Control-Allow-Methods", b"*")) 20 headers.append((b"Access-Control-Allow-Headers", b"*")) 21 else: 22 body = json.dumps({ 23 u"dest": isomorphic_decode(request.headers.get(b"sec-fetch-dest", b"")), 24 u"mode": isomorphic_decode(request.headers.get(b"sec-fetch-mode", b"")), 25 u"site": isomorphic_decode(request.headers.get(b"sec-fetch-site", b"")), 26 u"user": isomorphic_decode(request.headers.get(b"sec-fetch-user", b"")), 27 }) 28 29 return headers, body