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fix inline script redirects

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This commit is contained in:
Maximilian Hils 2015-08-27 17:35:53 +02:00
parent 515c024448
commit 83decd6771
5 changed files with 45 additions and 34 deletions
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3
libmproxy/flow.py
View File

@ -8,6 +8,7 @@ import Cookie
import cookielib
import os
import re
from libmproxy.protocol2.http import RequestReplayThread
from netlib import odict, wsgi, tcp
from netlib.http.semantics import CONTENT_MISSING
@ -934,7 +935,7 @@ class FlowMaster(controller.Master):
f.response = None
f.error = None
self.process_new_request(f)
rt = http.RequestReplayThread(
rt = RequestReplayThread(
self.server.config,
f,
self.masterq if run_scripthooks else False,

19
libmproxy/protocol2/http.py
View File

@ -212,10 +212,11 @@ class UpstreamConnectLayer(Layer):
self.ctx.reconnect()
self.send_to_server(self.connect_request)
def set_server(self, address, server_tls, sni, depth=1):
def set_server(self, address, server_tls=None, sni=None, depth=1):
if depth == 1:
if self.ctx.server_conn:
self.ctx.reconnect()
address = Address.wrap(address)
self.connect_request.host = address.host
self.connect_request.port = address.port
self.server_conn.address = address
@ -227,11 +228,16 @@ class HttpLayer(Layer):
def __init__(self, ctx, mode):
super(HttpLayer, self).__init__(ctx)
self.mode = mode
self.__original_server_conn = None
"Contains the original destination in transparent mode, which needs to be restored"
"if an inline script modified the target server for a single http request"
def __call__(self):
if self.mode == "transparent":
self.__original_server_conn = self.server_conn
while True:
try:
flow = HTTPFlow(self.client_conn, self.server_conn, live=True)
flow = HTTPFlow(self.client_conn, self.server_conn, live=self)
try:
request = self.read_from_client()
@ -288,7 +294,7 @@ class HttpLayer(Layer):
flow.live = False
def handle_regular_mode_connect(self, request):
self.set_server((request.host, request.port), False, None)
self.set_server((request.host, request.port))
self.send_to_client(make_connect_response(request.httpversion))
layer = self.ctx.next_layer(self)
layer()
@ -433,11 +439,10 @@ class HttpLayer(Layer):
if flow.request.form_in == "authority":
flow.request.scheme = "http" # pseudo value
else:
flow.request.host = self.ctx.server_conn.address.host
flow.request.port = self.ctx.server_conn.address.port
flow.request.scheme = "https" if self.server_conn.tls_established else "http"
flow.request.host = self.__original_server_conn.address.host
flow.request.port = self.__original_server_conn.address.port
flow.request.scheme = "https" if self.__original_server_conn.tls_established else "http"
# TODO: Expose .set_server functionality to inline scripts
request_reply = self.channel.ask("request", flow)
if request_reply is None or request_reply == KILL:
raise Kill()

2
libmproxy/protocol2/layer.py
View File

@ -112,7 +112,7 @@ class ServerConnectionMixin(object):
self.server_conn.address = address
self.connect()
def set_server(self, address, server_tls, sni, depth=1):
def set_server(self, address, server_tls=None, sni=None, depth=1):
if depth == 1:
if self.server_conn:
self._disconnect()

4
libmproxy/protocol2/tls.py
View File

@ -110,9 +110,9 @@ class TlsLayer(Layer):
if self._server_tls and not self.server_conn.tls_established:
self._establish_tls_with_server()
def set_server(self, address, server_tls, sni, depth=1):
def set_server(self, address, server_tls=None, sni=None, depth=1):
self.ctx.set_server(address, server_tls, sni, depth)
if server_tls is not None:
if depth == 1 and server_tls is not None:
self._sni_from_server_change = sni
self._server_tls = server_tls

51
test/test_server.py
View File

@ -1,6 +1,7 @@
import socket
import time
from OpenSSL import SSL
from netlib.tcp import Address
import netlib.tutils
from netlib import tcp, http, socks
@ -655,63 +656,67 @@ class MasterRedirectRequest(tservers.TestMaster):
redirect_port = None # Set by TestRedirectRequest
def handle_request(self, f):
request = f.request
if request.path == "/p/201":
addr = f.live.c.server_conn.address
assert f.live.change_server(
("127.0.0.1", self.redirect_port), ssl=False)
assert not f.live.change_server(
("127.0.0.1", self.redirect_port), ssl=False)
tutils.raises(
"SSL handshake error",
f.live.change_server,
("127.0.0.1",
self.redirect_port),
ssl=True)
assert f.live.change_server(addr, ssl=False)
request.url = "http://127.0.0.1:%s/p/201" % self.redirect_port
tservers.TestMaster.handle_request(self, f)
if f.request.path == "/p/201":
# This part should have no impact, but it should not cause any exceptions.
addr = f.live.server_conn.address
addr2 = Address(("127.0.0.1", self.redirect_port))
f.live.set_server(addr2)
f.live.connect()
f.live.set_server(addr)
f.live.connect()
# This is the actual redirection.
f.request.port = self.redirect_port
super(MasterRedirectRequest, self).handle_request(f)
def handle_response(self, f):
f.response.content = str(f.client_conn.address.port)
f.response.headers[
"server-conn-id"] = [str(f.server_conn.source_address.port)]
tservers.TestMaster.handle_response(self, f)
super(MasterRedirectRequest, self).handle_response(f)
class TestRedirectRequest(tservers.HTTPProxTest):
masterclass = MasterRedirectRequest
ssl = True
def test_redirect(self):
"""
Imagine a single HTTPS connection with three requests:
1. First request should pass through unmodified
2. Second request will be redirected to a different host by an inline script
3. Third request should pass through unmodified
This test verifies that the original destination is restored for the third request.
"""
self.master.redirect_port = self.server2.port
p = self.pathoc()
self.server.clear_log()
self.server2.clear_log()
r1 = p.request("get:'%s/p/200'" % self.server.urlbase)
r1 = p.request("get:'/p/200'")
assert r1.status_code == 200
assert self.server.last_log()
assert not self.server2.last_log()
self.server.clear_log()
self.server2.clear_log()
r2 = p.request("get:'%s/p/201'" % self.server.urlbase)
r2 = p.request("get:'/p/201'")
assert r2.status_code == 201
assert not self.server.last_log()
assert self.server2.last_log()
self.server.clear_log()
self.server2.clear_log()
r3 = p.request("get:'%s/p/202'" % self.server.urlbase)
r3 = p.request("get:'/p/202'")
assert r3.status_code == 202
assert self.server.last_log()
assert not self.server2.last_log()
assert r1.content == r2.content == r3.content
assert r1.headers.get_first(
"server-conn-id") == r3.headers.get_first("server-conn-id")
# Make sure that we actually use the same connection in this test case
class MasterStreamRequest(tservers.TestMaster):