HTTP proxy
A simple filtering HTTP proxy server in Python.
Usage
python proxy.py [host] [port]
TODO
- redesign Http class
- close sockets properly when required
- make nice logging
- add some initial requests modification to be transparent for a server (test en.wikipedia.org, arxiv.org)
- add addresses filtering for HTTPS
Filtering usage example
#!/usr/bin/env python
from http import *
import proxy
filter_hosts = ['example.com', 'example.org']
def filter_request(request):
meta = request.meta
if 'Accept-Encoding' in meta:
del meta['Accept-Encoding'] # make sure request doesn't allow encoded response
request.meta = meta
return request
def filter_response(request, response):
insertion = '<img style="position:fixed;left:20%;bottom:0;z-index:100500" alt="Hidden trollface1.png" src="//lurkmore.so/images/8/80/Hidden_trollface1.png" width="192" height="56">'
if request.meta['Host'] in filter_hosts:
meta = response.meta
content_type = meta.get('Content-Type')
if content_type and 'text/html' in content_type.lower() and not 'Content-Encoding' in meta:
body = response.body
i = body.lower().rfind('</body>')
body = body[:i] + insertion + body[i:]
meta['Content-Length'] = str(len(body))
response.meta = meta
response.body = body # should be set _after_ meta because of content-length change (or just use response.set(...) to set both simultaneously)
print '>-< insertion done'
return response
if __name__ == '__main__':
proxy.filter_request = filter_request
proxy.filter_response = filter_response
proxy.run()