You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
104 lines
2.5 KiB
104 lines
2.5 KiB
#!/usr/bin/env python
|
|
#
|
|
# Copyright 2015-2015 breakwa11
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
|
|
from __future__ import absolute_import, division, print_function, \
|
|
with_statement
|
|
|
|
import os
|
|
import sys
|
|
import hashlib
|
|
import logging
|
|
|
|
from shadowsocks.common import ord
|
|
|
|
def create_obfs(method):
|
|
return plain(method)
|
|
|
|
obfs_map = {
|
|
'plain': (create_obfs,),
|
|
'origin': (create_obfs,),
|
|
}
|
|
|
|
class plain(object):
|
|
def __init__(self, method):
|
|
self.method = method
|
|
self.server_info = None
|
|
|
|
def init_data(self):
|
|
return b''
|
|
|
|
def get_overhead(self, direction): # direction: true for c->s false for s->c
|
|
return 0
|
|
|
|
def get_server_info(self):
|
|
return self.server_info
|
|
|
|
def set_server_info(self, server_info):
|
|
self.server_info = server_info
|
|
|
|
def client_pre_encrypt(self, buf):
|
|
return buf
|
|
|
|
def client_encode(self, buf):
|
|
return buf
|
|
|
|
def client_decode(self, buf):
|
|
# (buffer_to_recv, is_need_to_encode_and_send_back)
|
|
return (buf, False)
|
|
|
|
def client_post_decrypt(self, buf):
|
|
return buf
|
|
|
|
def server_pre_encrypt(self, buf):
|
|
return buf
|
|
|
|
def server_encode(self, buf):
|
|
return buf
|
|
|
|
def server_decode(self, buf):
|
|
# (buffer_to_recv, is_need_decrypt, is_need_to_encode_and_send_back)
|
|
return (buf, True, False)
|
|
|
|
def server_post_decrypt(self, buf):
|
|
return (buf, False)
|
|
|
|
def client_udp_pre_encrypt(self, buf):
|
|
return buf
|
|
|
|
def client_udp_post_decrypt(self, buf):
|
|
return buf
|
|
|
|
def server_udp_pre_encrypt(self, buf):
|
|
return buf
|
|
|
|
def server_udp_post_decrypt(self, buf):
|
|
return (buf, None)
|
|
|
|
def dispose(self):
|
|
pass
|
|
|
|
def get_head_size(self, buf, def_value):
|
|
if len(buf) < 2:
|
|
return def_value
|
|
head_type = ord(buf[0]) & 0x7
|
|
if head_type == 1:
|
|
return 7
|
|
if head_type == 4:
|
|
return 19
|
|
if head_type == 3:
|
|
return 4 + ord(buf[1])
|
|
return def_value
|
|
|
|
|