proxy.py/proxy/plugin/modify_post_data.py

48 lines
1.6 KiB
Python

# -*- coding: utf-8 -*-
"""
proxy.py
~~~~~~~~
⚡⚡⚡ Fast, Lightweight, Pluggable, TLS interception capable proxy server focused on
Network monitoring, controls & Application development, testing, debugging.
:copyright: (c) 2013-present by Abhinav Singh and contributors.
:license: BSD, see LICENSE for more details.
"""
from typing import Optional
from ..common.utils import bytes_
from ..http.parser import HttpParser
from ..http.proxy import HttpProxyBasePlugin
from ..http.methods import httpMethods
class ModifyPostDataPlugin(HttpProxyBasePlugin):
"""Modify POST request body before sending to upstream server."""
MODIFIED_BODY = b'{"key": "modified"}'
def before_upstream_connection(
self, request: HttpParser) -> Optional[HttpParser]:
return request
def handle_client_request(
self, request: HttpParser) -> Optional[HttpParser]:
if request.method == httpMethods.POST:
request.body = ModifyPostDataPlugin.MODIFIED_BODY
# Update Content-Length header only when request is NOT chunked
# encoded
if not request.is_chunked_encoded():
request.add_header(b'Content-Length',
bytes_(len(request.body)))
# Enforce content-type json
if request.has_header(b'Content-Type'):
request.del_header(b'Content-Type')
request.add_header(b'Content-Type', b'application/json')
return request
def handle_upstream_chunk(self, chunk: memoryview) -> memoryview:
return chunk
def on_upstream_connection_close(self) -> None:
pass