Python port of ShadowsocksR
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#!/usr/bin/env python
# Copyright (c) 2013 clowwindy
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
from __future__ import with_statement
import sys
if sys.version_info < (2, 6):
import simplejson as json
else:
import json
try:
import gevent
import gevent.monkey
gevent.monkey.patch_all(dns=gevent.version_info[0] >= 1)
except ImportError:
gevent = None
print >>sys.stderr, 'warning: gevent not found, using threading instead'
import socket
import select
import SocketServer
import struct
import os
import random
import re
import logging
import getopt
import encrypt
import utils
def send_all(sock, data):
bytes_sent = 0
while True:
r = sock.send(data[bytes_sent:])
if r < 0:
return r
bytes_sent += r
if bytes_sent == len(data):
return bytes_sent
class ThreadingTCPServer(SocketServer.ThreadingMixIn, SocketServer.TCPServer):
allow_reuse_address = True
class Socks5Server(SocketServer.StreamRequestHandler):
def getServer(self):
aPort = REMOTE_PORT
aServer = SERVER
if isinstance(REMOTE_PORT, list):
# support config like "server_port": [8081, 8082]
aPort = random.choice(REMOTE_PORT)
if isinstance(SERVER, list):
# support config like "server": ["123.123.123.1", "123.123.123.2"]
aServer = random.choice(SERVER)
r = re.match(r'^(.*)\:(\d+)$', aServer)
if r:
# support config like "server": "123.123.123.1:8381"
# or "server": ["123.123.123.1:8381", "123.123.123.2:8381", "123.123.123.2:8382"]
aServer = r.group(1)
aPort = int(r.group(2))
return (aServer, aPort)
def handle_tcp(self, sock, remote):
try:
fdset = [sock, remote]
while True:
r, w, e = select.select(fdset, [], [])
if sock in r:
data = self.encrypt(sock.recv(4096))
if len(data) <= 0:
break
result = send_all(remote, data)
if result < len(data):
raise Exception('failed to send all data')
if remote in r:
data = self.decrypt(remote.recv(4096))
if len(data) <= 0:
break
result = send_all(sock, data)
if result < len(data):
raise Exception('failed to send all data')
finally:
sock.close()
remote.close()
def encrypt(self, data):
return self.encryptor.encrypt(data)
def decrypt(self, data):
return self.encryptor.decrypt(data)
def send_encrypt(self, sock, data):
sock.send(self.encrypt(data))
def handle(self):
try:
self.encryptor = encrypt.Encryptor(KEY, METHOD)
sock = self.connection
sock.recv(262)
sock.send("\x05\x00")
data = self.rfile.read(4) or '\x00' * 4
mode = ord(data[1])
if mode != 1:
logging.warn('mode != 1')
return
addrtype = ord(data[3])
addr_to_send = data[3]
if addrtype == 1:
addr_ip = self.rfile.read(4)
addr = socket.inet_ntoa(addr_ip)
addr_to_send += addr_ip
elif addrtype == 3:
addr_len = self.rfile.read(1)
addr = self.rfile.read(ord(addr_len))
addr_to_send += addr_len + addr
elif addrtype == 4:
addr_ip = self.rfile.read(16)
addr = socket.inet_ntop(socket.AF_INET6, addr_ip)
addr_to_send += addr_ip
else:
logging.warn('addr_type not supported')
# not supported
return
addr_port = self.rfile.read(2)
addr_to_send += addr_port
port = struct.unpack('>H', addr_port)
try:
reply = "\x05\x00\x00\x01"
reply += socket.inet_aton('0.0.0.0') + struct.pack(">H", 2222)
self.wfile.write(reply)
# reply immediately
aServer, aPort = self.getServer()
remote = socket.create_connection((aServer, aPort))
self.send_encrypt(remote, addr_to_send)
logging.info('connecting %s:%d' % (addr, port[0]))
except socket.error, e:
logging.warn(e)
return
self.handle_tcp(sock, remote)
except socket.error, e:
logging.warn(e)
def main():
global SERVER, REMOTE_PORT, KEY, METHOD
logging.basicConfig(level=logging.DEBUG,
format='%(asctime)s %(levelname)-8s %(message)s',
datefmt='%Y-%m-%d %H:%M:%S', filemode='a+')
# fix py2exe
if hasattr(sys, "frozen") and sys.frozen in \
("windows_exe", "console_exe"):
p = os.path.dirname(os.path.abspath(sys.executable))
os.chdir(p)
version = ''
try:
import pkg_resources
version = pkg_resources.get_distribution('shadowsocks').version
except:
pass
print 'shadowsocks %s' % version
KEY = None
METHOD = None
LOCAL = ''
IPv6 = False
config_path = utils.find_config()
optlist, args = getopt.getopt(sys.argv[1:], 's:b:p:k:l:m:c:6')
for key, value in optlist:
if key == '-c':
config_path = value
if config_path:
logging.info('loading config from %s' % config_path)
with open(config_path, 'rb') as f:
try:
config = json.load(f)
except ValueError as e:
logging.error('found an error in config.json: %s', e.message)
sys.exit(1)
else:
config = {}
optlist, args = getopt.getopt(sys.argv[1:], 's:b:p:k:l:m:c:6')
for key, value in optlist:
if key == '-p':
config['server_port'] = int(value)
elif key == '-k':
config['password'] = value
elif key == '-l':
config['local_port'] = int(value)
elif key == '-s':
config['server'] = value
elif key == '-m':
config['method'] = value
elif key == '-b':
config['local'] = value
elif key == '-6':
IPv6 = True
SERVER = config['server']
REMOTE_PORT = config['server_port']
PORT = config['local_port']
KEY = config['password']
METHOD = config.get('method', None)
LOCAL = config.get('local', '')
if not KEY and not config_path:
sys.exit('config not specified, please read https://github.com/clowwindy/shadowsocks')
utils.check_config(config)
encrypt.init_table(KEY, METHOD)
try:
if IPv6:
ThreadingTCPServer.address_family = socket.AF_INET6
server = ThreadingTCPServer((LOCAL, PORT), Socks5Server)
logging.info("starting local at %s:%d" % tuple(server.server_address[:2]))
server.serve_forever()
except socket.error, e:
logging.error(e)
except KeyboardInterrupt:
server.shutdown()
sys.exit(0)
if __name__ == '__main__':
main()