mirror of
https://github.com/Grasscutters/mitmproxy.git
synced 2024-11-27 02:24:18 +00:00
73 lines
2.5 KiB
Python
73 lines
2.5 KiB
Python
from __future__ import (absolute_import, print_function, division)
|
|
import socket
|
|
import select
|
|
import six
|
|
import sys
|
|
|
|
from OpenSSL import SSL
|
|
|
|
from netlib.tcp import NetLibError, ssl_read_select
|
|
from netlib.utils import clean_bin
|
|
from ..exceptions import ProtocolException
|
|
from .base import Layer
|
|
|
|
|
|
class RawTCPLayer(Layer):
|
|
chunk_size = 4096
|
|
|
|
def __init__(self, ctx, logging=True):
|
|
self.logging = logging
|
|
super(RawTCPLayer, self).__init__(ctx)
|
|
|
|
def __call__(self):
|
|
self.connect()
|
|
|
|
buf = memoryview(bytearray(self.chunk_size))
|
|
|
|
client = self.client_conn.connection
|
|
server = self.server_conn.connection
|
|
conns = [client, server]
|
|
|
|
try:
|
|
while True:
|
|
r = ssl_read_select(conns, 10)
|
|
for conn in r:
|
|
dst = server if conn == client else client
|
|
|
|
size = conn.recv_into(buf, self.chunk_size)
|
|
if not size:
|
|
conns.remove(conn)
|
|
# Shutdown connection to the other peer
|
|
if isinstance(conn, SSL.Connection):
|
|
# We can't half-close a connection, so we just close everything here.
|
|
# Sockets will be cleaned up on a higher level.
|
|
return
|
|
else:
|
|
dst.shutdown(socket.SHUT_WR)
|
|
|
|
if len(conns) == 0:
|
|
return
|
|
continue
|
|
|
|
dst.sendall(buf[:size])
|
|
|
|
if self.logging:
|
|
# log messages are prepended with the client address,
|
|
# hence the "weird" direction string.
|
|
if dst == server:
|
|
direction = "-> tcp -> {}".format(repr(self.server_conn.address))
|
|
else:
|
|
direction = "<- tcp <- {}".format(repr(self.server_conn.address))
|
|
data = clean_bin(buf[:size].tobytes())
|
|
self.log(
|
|
"{}\r\n{}".format(direction, data),
|
|
"info"
|
|
)
|
|
|
|
except (socket.error, NetLibError, SSL.Error) as e:
|
|
six.reraise(
|
|
ProtocolException,
|
|
ProtocolException("TCP connection closed unexpectedly: {}".format(repr(e))),
|
|
sys.exc_info()[2]
|
|
)
|