Merge pull request #741 from mitmproxy/proxy-refactor-cb

Proxy Refactor

1 files changed, 96 insertions, 0 deletions

diff --git a/libmproxy/protocol/http_replay.py b/libmproxy/protocol/http_replay.py
new file mode 100644
index 00000000..2759a019
--- /dev/null
+++ b/libmproxy/protocol/http_replay.py
@@ -0,0 +1,96 @@
+from __future__ import (absolute_import, print_function, division)
+import threading
+
+from netlib.http import HttpError
+from netlib.http.http1 import HTTP1Protocol
+from netlib.tcp import NetLibError
+from ..controller import Channel
+from ..models import Error, HTTPResponse, ServerConnection, make_connect_request
+from .base import Log, Kill
+
+
+# TODO: Doesn't really belong into libmproxy.protocol...
+
+
+class RequestReplayThread(threading.Thread):
+    name = "RequestReplayThread"
+
+    def __init__(self, config, flow, masterq, should_exit):
+        """
+            masterqueue can be a queue or None, if no scripthooks should be
+            processed.
+        """
+        self.config, self.flow = config, flow
+        if masterq:
+            self.channel = Channel(masterq, should_exit)
+        else:
+            self.channel = None
+        super(RequestReplayThread, self).__init__()
+
+    def run(self):
+        r = self.flow.request
+        form_out_backup = r.form_out
+        try:
+            self.flow.response = None
+
+            # If we have a channel, run script hooks.
+            if self.channel:
+                request_reply = self.channel.ask("request", self.flow)
+                if request_reply == Kill:
+                    raise Kill()
+                elif isinstance(request_reply, HTTPResponse):
+                    self.flow.response = request_reply
+
+            if not self.flow.response:
+                # In all modes, we directly connect to the server displayed
+                if self.config.mode == "upstream":
+                    server_address = self.config.upstream_server.address
+                    server = ServerConnection(server_address)
+                    server.connect()
+                    protocol = HTTP1Protocol(server)
+                    if r.scheme == "https":
+                        connect_request = make_connect_request((r.host, r.port))
+                        server.send(protocol.assemble(connect_request))
+                        resp = protocol.read_response("CONNECT")
+                        if resp.code != 200:
+                            raise HttpError(502, "Upstream server refuses CONNECT request")
+                        server.establish_ssl(
+                            self.config.clientcerts,
+                            sni=self.flow.server_conn.sni
+                        )
+                        r.form_out = "relative"
+                    else:
+                        r.form_out = "absolute"
+                else:
+                    server_address = (r.host, r.port)
+                    server = ServerConnection(server_address)
+                    server.connect()
+                    protocol = HTTP1Protocol(server)
+                    if r.scheme == "https":
+                        server.establish_ssl(
+                            self.config.clientcerts,
+                            sni=self.flow.server_conn.sni
+                        )
+                    r.form_out = "relative"
+
+                server.send(protocol.assemble(r))
+                self.flow.server_conn = server
+                self.flow.response = HTTPResponse.from_protocol(
+                    protocol,
+                    r.method,
+                    body_size_limit=self.config.body_size_limit,
+                )
+            if self.channel:
+                response_reply = self.channel.ask("response", self.flow)
+                if response_reply == Kill:
+                    raise Kill()
+        except (HttpError, NetLibError) as v:
+            self.flow.error = Error(repr(v))
+            if self.channel:
+                self.channel.ask("error", self.flow)
+        except Kill:
+            # KillSignal should only be raised if there's a channel in the
+            # first place.
+            self.channel.tell("log", Log("Connection killed", "info"))
+        finally:
+            r.form_out = form_out_backup