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import importlib
import json
jwt_helper = importlib.import_module('device-bound-session-credentials.jwt_helper')
session_manager = importlib.import_module('device-bound-session-credentials.session_manager')
def main(request, response):
test_session_manager = session_manager.find_for_request(request)
test_session_manager.set_has_called_refresh(True)
if test_session_manager.get_refresh_endpoint_unavailable():
return (500, response.headers, "")
session_id_header = request.headers.get("Sec-Session-Id")
if session_id_header == None:
return (400, response.headers, "")
session_id_header = session_id_header.decode('utf-8')
session_id = int(session_id_header)
if test_session_manager.get_should_refresh_end_session():
response_body = {
"session_identifier": session_id,
"continue": False
}
return (200, response.headers, json.dumps(response_body))
session_key = test_session_manager.get_session_key(session_id)
if session_key == None:
return (400, response.headers, "")
if test_session_manager.get_refresh_sends_challenge():
challenge = "refresh_challenge_value"
if request.headers.get("Sec-Session-Response") == None:
return (401, [('Sec-Session-Challenge', f'"{challenge}";id="{session_id}"')], "")
jwt_header, jwt_payload, verified = jwt_helper.decode_jwt(request.headers.get("Sec-Session-Response").decode('utf-8'), session_key)
early_challenge = test_session_manager.get_early_challenge(session_id)
if early_challenge is not None:
challenge = early_challenge
if not verified or jwt_payload.get("jti") != challenge:
return (400, response.headers, "")
if jwt_payload.get("sub") != session_id_header:
return (400, response.headers, "")
return test_session_manager.get_session_instructions_response(session_id, request)
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