mirror of
https://github.com/Grasscutters/mitmproxy.git
synced 2024-11-23 08:11:00 +00:00
157 lines
4.9 KiB
Python
157 lines
4.9 KiB
Python
from __future__ import (absolute_import, print_function, division)
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import traceback
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import sys
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import socket
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import six
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from netlib import tcp
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from netlib.exceptions import TcpException
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from netlib.http.http1 import assemble_response
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from ..exceptions import ProtocolException, ServerException, ClientHandshakeException
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from ..protocol import Kill
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from ..models import ClientConnection, make_error_response
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from .modes import HttpUpstreamProxy, HttpProxy, ReverseProxy, TransparentProxy, Socks5Proxy
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from .root_context import RootContext, Log
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class DummyServer:
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bound = False
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def __init__(self, config):
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self.config = config
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def start_slave(self, *args):
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pass
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def shutdown(self):
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pass
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class ProxyServer(tcp.TCPServer):
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allow_reuse_address = True
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bound = True
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def __init__(self, config):
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"""
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Raises ProxyServerError if there's a startup problem.
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"""
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self.config = config
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try:
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super(ProxyServer, self).__init__((config.host, config.port))
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except socket.error as e:
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six.reraise(
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ServerException,
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ServerException('Error starting proxy server: ' + repr(e)),
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sys.exc_info()[2]
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)
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self.channel = None
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def start_slave(self, klass, channel):
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slave = klass(channel, self)
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slave.start()
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def set_channel(self, channel):
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self.channel = channel
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def handle_client_connection(self, conn, client_address):
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h = ConnectionHandler(
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conn,
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client_address,
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self.config,
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self.channel
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)
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h.handle()
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class ConnectionHandler(object):
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def __init__(self, client_conn, client_address, config, channel):
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self.config = config
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"""@type: libmproxy.proxy.config.ProxyConfig"""
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self.client_conn = ClientConnection(
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client_conn,
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client_address,
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None)
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"""@type: libmproxy.proxy.connection.ClientConnection"""
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self.channel = channel
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"""@type: libmproxy.controller.Channel"""
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def _create_root_layer(self):
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root_context = RootContext(
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self.client_conn,
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self.config,
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self.channel
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)
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mode = self.config.mode
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if mode == "upstream":
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return HttpUpstreamProxy(
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root_context,
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self.config.upstream_server.address
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)
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elif mode == "transparent":
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return TransparentProxy(root_context)
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elif mode == "reverse":
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server_tls = self.config.upstream_server.scheme == "https"
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return ReverseProxy(
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root_context,
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self.config.upstream_server.address,
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server_tls
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)
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elif mode == "socks5":
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return Socks5Proxy(root_context)
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elif mode == "regular":
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return HttpProxy(root_context)
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elif callable(mode): # pragma: nocover
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return mode(root_context)
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else: # pragma: nocover
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raise ValueError("Unknown proxy mode: %s" % mode)
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def handle(self):
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self.log("clientconnect", "info")
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root_layer = self._create_root_layer()
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root_layer = self.channel.ask("clientconnect", root_layer)
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if root_layer == Kill:
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def root_layer():
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raise Kill()
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try:
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root_layer()
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except Kill:
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self.log("Connection killed", "info")
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except ProtocolException as e:
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if isinstance(e, ClientHandshakeException):
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self.log(
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"Client Handshake failed. "
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"The client may not trust the proxy's certificate for {}.".format(e.server),
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"error"
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)
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self.log(repr(e), "debug")
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else:
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self.log(repr(e), "info")
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self.log(traceback.format_exc(), "debug")
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# If an error propagates to the topmost level,
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# we send an HTTP error response, which is both
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# understandable by HTTP clients and humans.
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try:
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error_response = make_error_response(502, repr(e))
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self.client_conn.send(assemble_response(error_response))
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except TcpException:
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pass
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except Exception:
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self.log(traceback.format_exc(), "error")
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print(traceback.format_exc(), file=sys.stderr)
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print("mitmproxy has crashed!", file=sys.stderr)
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print("Please lodge a bug report at: https://github.com/mitmproxy/mitmproxy", file=sys.stderr)
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self.log("clientdisconnect", "info")
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self.channel.tell("clientdisconnect", root_layer)
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self.client_conn.finish()
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def log(self, msg, level):
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msg = "{}: {}".format(repr(self.client_conn.address), msg)
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self.channel.tell("log", Log(msg, level))
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