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322 lines
11 KiB
322 lines
11 KiB
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# Copyright (c) 2014 clowwindy
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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from __future__ import with_statement
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import sys
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if sys.version_info < (2, 6):
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import simplejson as json
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else:
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import json
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# TODO remove gevent
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try:
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import gevent
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import gevent.monkey
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gevent.monkey.patch_all(dns=gevent.version_info[0] >= 1)
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except ImportError:
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gevent = None
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print >>sys.stderr, 'warning: gevent not found, using threading instead'
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import socket
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import select
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import threading
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import SocketServer
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import struct
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import logging
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import getopt
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import encrypt
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import os
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import utils
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import udprelay
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def send_all(sock, data):
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bytes_sent = 0
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while True:
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r = sock.send(data[bytes_sent:])
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if r < 0:
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return r
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bytes_sent += r
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if bytes_sent == len(data):
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return bytes_sent
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class ThreadingTCPServer(SocketServer.ThreadingMixIn, SocketServer.TCPServer):
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allow_reuse_address = True
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def server_activate(self):
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if config_fast_open:
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try:
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self.socket.setsockopt(socket.SOL_TCP, 23, 5)
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except socket.error:
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logging.error('warning: fast open is not available')
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self.socket.listen(self.request_queue_size)
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def get_request(self):
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connection = self.socket.accept()
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connection[0].settimeout(config_timeout)
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return connection
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class Socks5Server(SocketServer.StreamRequestHandler):
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def handle_tcp(self, sock, remote):
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try:
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fdset = [sock, remote]
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while True:
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should_break = False
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r, w, e = select.select(fdset, [], [], config_timeout)
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if not r:
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logging.warn('read time out')
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break
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if sock in r:
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data = self.decrypt(sock.recv(4096))
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if len(data) <= 0:
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should_break = True
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else:
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result = send_all(remote, data)
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if result < len(data):
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raise Exception('failed to send all data')
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if remote in r:
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data = self.encrypt(remote.recv(4096))
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if len(data) <= 0:
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should_break = True
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else:
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result = send_all(sock, data)
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if result < len(data):
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raise Exception('failed to send all data')
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if should_break:
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# make sure all data are read before we close the sockets
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# TODO: we haven't read ALL the data, actually
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# http://cs.ecs.baylor.edu/~donahoo/practical/CSockets/TCPRST.pdf
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break
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finally:
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sock.close()
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remote.close()
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def encrypt(self, data):
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return self.encryptor.encrypt(data)
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def decrypt(self, data):
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return self.encryptor.decrypt(data)
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def handle(self):
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try:
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self.encryptor = encrypt.Encryptor(self.server.key,
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self.server.method)
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sock = self.connection
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sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
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iv_len = self.encryptor.iv_len()
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data = sock.recv(iv_len)
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if iv_len > 0 and not data:
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sock.close()
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return
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if iv_len:
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self.decrypt(data)
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data = sock.recv(1)
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if not data:
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sock.close()
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return
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addrtype = ord(self.decrypt(data))
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if addrtype == 1:
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addr = socket.inet_ntoa(self.decrypt(self.rfile.read(4)))
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elif addrtype == 3:
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addr = self.decrypt(
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self.rfile.read(ord(self.decrypt(sock.recv(1)))))
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elif addrtype == 4:
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addr = socket.inet_ntop(socket.AF_INET6,
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self.decrypt(self.rfile.read(16)))
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else:
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# not supported
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logging.warn('addr_type not supported, maybe wrong password')
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return
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port = struct.unpack('>H', self.decrypt(self.rfile.read(2)))
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try:
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logging.info('connecting %s:%d' % (addr, port[0]))
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remote = socket.create_connection((addr, port[0]),
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timeout=config_timeout)
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remote.settimeout(config_timeout)
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remote.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
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except socket.error, e:
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# Connection refused
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logging.warn(e)
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return
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self.handle_tcp(sock, remote)
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except socket.error, e:
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logging.warn(e)
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def main():
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global config_server, config_server_port, config_method, config_fast_open, \
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config_timeout
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logging.basicConfig(level=logging.DEBUG,
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format='%(asctime)s %(levelname)-8s %(message)s',
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datefmt='%Y-%m-%d %H:%M:%S', filemode='a+')
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version = ''
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try:
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import pkg_resources
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version = pkg_resources.get_distribution('shadowsocks').version
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except:
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pass
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print 'shadowsocks %s' % version
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config_path = utils.find_config()
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try:
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optlist, args = getopt.getopt(sys.argv[1:], 's:p:k:m:c:t:',
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['fast-open', 'workers:'])
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for key, value in optlist:
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if key == '-c':
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config_path = value
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if config_path:
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logging.info('loading config from %s' % config_path)
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with open(config_path, 'rb') as f:
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try:
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config = json.load(f)
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except ValueError as e:
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logging.error('found an error in config.json: %s',
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e.message)
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sys.exit(1)
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else:
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config = {}
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optlist, args = getopt.getopt(sys.argv[1:], 's:p:k:m:c:t:',
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['fast-open', 'workers='])
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for key, value in optlist:
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if key == '-p':
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config['server_port'] = int(value)
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elif key == '-k':
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config['password'] = value
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elif key == '-s':
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config['server'] = value
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elif key == '-m':
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config['method'] = value
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elif key == '-t':
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config['timeout'] = value
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elif key == '--fast-open':
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config['fast_open'] = True
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elif key == '--workers':
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config['workers'] = value
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except getopt.GetoptError:
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utils.print_server_help()
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sys.exit(2)
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config_server = config['server']
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config_server_port = config['server_port']
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config_key = config['password']
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config_method = config.get('method', None)
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config_port_password = config.get('port_password', None)
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config_timeout = int(config.get('timeout', 300))
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config_fast_open = config.get('fast_open', False)
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config_workers = config.get('workers', 1)
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if not config_key and not config_path:
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sys.exit('config not specified, please read '
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'https://github.com/clowwindy/shadowsocks')
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utils.check_config(config)
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if config_port_password:
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if config_server_port or config_key:
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logging.warn('warning: port_password should not be used with '
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'server_port and password. server_port and password '
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'will be ignored')
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else:
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config_port_password = {}
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config_port_password[str(config_server_port)] = config_key
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encrypt.init_table(config_key, config_method)
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addrs = socket.getaddrinfo(config_server, int(8387))
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if not addrs:
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logging.error('cant resolve listen address')
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sys.exit(1)
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ThreadingTCPServer.address_family = addrs[0][0]
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tcp_servers = []
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udp_servers = []
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for port, key in config_port_password.items():
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tcp_server = ThreadingTCPServer((config_server, int(port)),
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Socks5Server)
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tcp_server.key = key
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tcp_server.method = config_method
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tcp_server.timeout = int(config_timeout)
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logging.info("starting server at %s:%d" %
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tuple(tcp_server.server_address[:2]))
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tcp_servers.append(tcp_server)
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udp_server = udprelay.UDPRelay(config_server, int(port), None, None,
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key, config_method, int(config_timeout),
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False)
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udp_servers.append(udp_server)
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def run_server():
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for tcp_server in tcp_servers:
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threading.Thread(target=tcp_server.serve_forever).start()
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for udp_server in udp_servers:
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udp_server.start()
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if int(config_workers) > 1:
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if os.name == 'posix':
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children = []
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is_child = False
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for i in xrange(0, int(config_workers)):
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r = os.fork()
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if r == 0:
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logging.info('worker started')
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is_child = True
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run_server()
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break
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else:
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children.append(r)
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if not is_child:
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def handler(signum, frame):
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for pid in children:
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os.kill(pid, signum)
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os.waitpid(pid, 0)
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sys.exit()
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import signal
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signal.signal(signal.SIGTERM, handler)
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# master
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for tcp_server in tcp_servers:
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tcp_server.server_close()
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for udp_server in udp_servers:
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udp_server.close()
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for child in children:
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os.waitpid(child, 0)
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else:
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logging.warn('worker is only available on Unix/Linux')
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run_server()
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else:
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run_server()
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if __name__ == '__main__':
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try:
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main()
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except socket.error, e:
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logging.error(e)
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