breakwa11
9 years ago
7 changed files with 438 additions and 75 deletions
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#!/usr/bin/python |
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# -*- coding: utf-8 -*- |
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# |
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# Copyright 2015 clowwindy |
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# |
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# Licensed under the Apache License, Version 2.0 (the "License"); you may |
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# not use this file except in compliance with the License. You may obtain |
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# a copy of the License at |
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# |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
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# License for the specific language governing permissions and limitations |
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# under the License. |
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from __future__ import absolute_import, division, print_function, \ |
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with_statement |
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import errno |
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import traceback |
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import socket |
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import logging |
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import json |
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import collections |
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from shadowsocks import common, eventloop, tcprelay, udprelay, asyncdns, shell |
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BUF_SIZE = 1506 |
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STAT_SEND_LIMIT = 100 |
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class Manager(object): |
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def __init__(self, config): |
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self._config = config |
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self._relays = {} # (tcprelay, udprelay) |
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self._loop = eventloop.EventLoop() |
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self._dns_resolver = asyncdns.DNSResolver() |
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self._dns_resolver.add_to_loop(self._loop) |
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self._statistics = collections.defaultdict(int) |
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self._control_client_addr = None |
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try: |
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manager_address = config['manager_address'] |
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if ':' in manager_address: |
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addr = manager_address.rsplit(':', 1) |
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addr = addr[0], int(addr[1]) |
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addrs = socket.getaddrinfo(addr[0], addr[1]) |
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if addrs: |
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family = addrs[0][0] |
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else: |
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logging.error('invalid address: %s', manager_address) |
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exit(1) |
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else: |
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addr = manager_address |
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family = socket.AF_UNIX |
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self._control_socket = socket.socket(family, |
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socket.SOCK_DGRAM) |
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self._control_socket.bind(addr) |
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self._control_socket.setblocking(False) |
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except (OSError, IOError) as e: |
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logging.error(e) |
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logging.error('can not bind to manager address') |
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exit(1) |
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self._loop.add(self._control_socket, |
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eventloop.POLL_IN, self) |
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self._loop.add_periodic(self.handle_periodic) |
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port_password = config['port_password'] |
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del config['port_password'] |
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for port, password in port_password.items(): |
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a_config = config.copy() |
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a_config['server_port'] = int(port) |
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a_config['password'] = password |
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self.add_port(a_config) |
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def add_port(self, config): |
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port = int(config['server_port']) |
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servers = self._relays.get(port, None) |
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if servers: |
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logging.error("server already exists at %s:%d" % (config['server'], |
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port)) |
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return |
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logging.info("adding server at %s:%d" % (config['server'], port)) |
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t = tcprelay.TCPRelay(config, self._dns_resolver, False, |
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self.stat_callback) |
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u = udprelay.UDPRelay(config, self._dns_resolver, False, |
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self.stat_callback) |
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t.add_to_loop(self._loop) |
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u.add_to_loop(self._loop) |
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self._relays[port] = (t, u) |
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def remove_port(self, config): |
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port = int(config['server_port']) |
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servers = self._relays.get(port, None) |
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if servers: |
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logging.info("removing server at %s:%d" % (config['server'], port)) |
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t, u = servers |
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t.close(next_tick=False) |
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u.close(next_tick=False) |
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del self._relays[port] |
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else: |
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logging.error("server not exist at %s:%d" % (config['server'], |
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port)) |
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def handle_event(self, sock, fd, event): |
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if sock == self._control_socket and event == eventloop.POLL_IN: |
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data, self._control_client_addr = sock.recvfrom(BUF_SIZE) |
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parsed = self._parse_command(data) |
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if parsed: |
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command, config = parsed |
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a_config = self._config.copy() |
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if config: |
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# let the command override the configuration file |
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a_config.update(config) |
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if 'server_port' not in a_config: |
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logging.error('can not find server_port in config') |
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else: |
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if command == 'add': |
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self.add_port(a_config) |
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self._send_control_data(b'ok') |
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elif command == 'remove': |
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self.remove_port(a_config) |
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self._send_control_data(b'ok') |
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elif command == 'ping': |
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self._send_control_data(b'pong') |
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else: |
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logging.error('unknown command %s', command) |
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def _parse_command(self, data): |
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# commands: |
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# add: {"server_port": 8000, "password": "foobar"} |
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# remove: {"server_port": 8000"} |
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data = common.to_str(data) |
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parts = data.split(':', 1) |
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if len(parts) < 2: |
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return data, None |
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command, config_json = parts |
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try: |
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config = shell.parse_json_in_str(config_json) |
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return command, config |
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except Exception as e: |
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logging.error(e) |
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return None |
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def stat_callback(self, port, data_len): |
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self._statistics[port] += data_len |
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def handle_periodic(self): |
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r = {} |
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i = 0 |
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def send_data(data_dict): |
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if data_dict: |
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# use compact JSON format (without space) |
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data = common.to_bytes(json.dumps(data_dict, |
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separators=(',', ':'))) |
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self._send_control_data(b'stat: ' + data) |
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for k, v in self._statistics.items(): |
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r[k] = v |
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i += 1 |
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# split the data into segments that fit in UDP packets |
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if i >= STAT_SEND_LIMIT: |
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send_data(r) |
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r.clear() |
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send_data(r) |
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self._statistics.clear() |
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def _send_control_data(self, data): |
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if self._control_client_addr: |
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try: |
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self._control_socket.sendto(data, self._control_client_addr) |
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except (socket.error, OSError, IOError) as e: |
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error_no = eventloop.errno_from_exception(e) |
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if error_no in (errno.EAGAIN, errno.EINPROGRESS, |
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errno.EWOULDBLOCK): |
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return |
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else: |
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shell.print_exception(e) |
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if self._config['verbose']: |
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traceback.print_exc() |
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def run(self): |
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self._loop.run() |
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def run(config): |
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Manager(config).run() |
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def test(): |
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import time |
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import threading |
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import struct |
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from shadowsocks import encrypt |
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logging.basicConfig(level=5, |
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format='%(asctime)s %(levelname)-8s %(message)s', |
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datefmt='%Y-%m-%d %H:%M:%S') |
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enc = [] |
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eventloop.TIMEOUT_PRECISION = 1 |
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def run_server(): |
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config = { |
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'server': '127.0.0.1', |
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'local_port': 1081, |
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'port_password': { |
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'8381': 'foobar1', |
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'8382': 'foobar2' |
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}, |
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'method': 'aes-256-cfb', |
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'manager_address': '127.0.0.1:6001', |
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'timeout': 60, |
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'fast_open': False, |
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'verbose': 2 |
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} |
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manager = Manager(config) |
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enc.append(manager) |
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manager.run() |
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t = threading.Thread(target=run_server) |
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t.start() |
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time.sleep(1) |
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manager = enc[0] |
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cli = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) |
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cli.connect(('127.0.0.1', 6001)) |
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# test add and remove |
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time.sleep(1) |
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cli.send(b'add: {"server_port":7001, "password":"asdfadsfasdf"}') |
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time.sleep(1) |
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assert 7001 in manager._relays |
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data, addr = cli.recvfrom(1506) |
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assert b'ok' in data |
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cli.send(b'remove: {"server_port":8381}') |
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time.sleep(1) |
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assert 8381 not in manager._relays |
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data, addr = cli.recvfrom(1506) |
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assert b'ok' in data |
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logging.info('add and remove test passed') |
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# test statistics for TCP |
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header = common.pack_addr(b'google.com') + struct.pack('>H', 80) |
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data = encrypt.encrypt_all(b'asdfadsfasdf', 'aes-256-cfb', 1, |
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header + b'GET /\r\n\r\n') |
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tcp_cli = socket.socket() |
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tcp_cli.connect(('127.0.0.1', 7001)) |
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tcp_cli.send(data) |
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tcp_cli.recv(4096) |
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tcp_cli.close() |
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data, addr = cli.recvfrom(1506) |
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data = common.to_str(data) |
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assert data.startswith('stat: ') |
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data = data.split('stat:')[1] |
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stats = shell.parse_json_in_str(data) |
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assert '7001' in stats |
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logging.info('TCP statistics test passed') |
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# test statistics for UDP |
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header = common.pack_addr(b'127.0.0.1') + struct.pack('>H', 80) |
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data = encrypt.encrypt_all(b'foobar2', 'aes-256-cfb', 1, |
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header + b'test') |
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udp_cli = socket.socket(type=socket.SOCK_DGRAM) |
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udp_cli.sendto(data, ('127.0.0.1', 8382)) |
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tcp_cli.close() |
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data, addr = cli.recvfrom(1506) |
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data = common.to_str(data) |
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assert data.startswith('stat: ') |
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data = data.split('stat:')[1] |
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stats = json.loads(data) |
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assert '8382' in stats |
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logging.info('UDP statistics test passed') |
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manager._loop.stop() |
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t.join() |
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if __name__ == '__main__': |
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test() |
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