def insert(self, user_id, client_id, connection_id):
if user_id not in self.user_id:
self.user_id[user_id] = lru_cache.LRUCache()
local_client_id = self.user_id[user_id]
if local_client_id.get(client_id, None) is None or not local_client_id[client_id].enable:
if local_client_id.first() is None or len(local_client_id) < self.max_client:
if client_id not in local_client_id:
# TODO: check
local_client_id[client_id] = client_queue(connection_id)
else:
local_client_id[client_id].re_enable(connection_id)
return local_client_id[client_id].insert(connection_id)
if not local_client_id[local_client_id.first()].is_active():
del local_client_id[local_client_id.first()]
if client_id not in local_client_id:
# TODO: check
local_client_id[client_id] = client_queue(connection_id)
else:
local_client_id[client_id].re_enable(connection_id)
return local_client_id[client_id].insert(connection_id)
logging.warn(self.name + ': no inactive client')
return False
else:
return local_client_id[client_id].insert(connection_id)
def update(self, user_id, client_id, connection_id):
if user_id not in self.user_id:
self.user_id[user_id] = lru_cache.LRUCache()
local_client_id = self.user_id[user_id]
if client_id in local_client_id:
local_client_id[client_id].update()
class UDPAsyncDNSHandler(object):
dns_cache = lru_cache.LRUCache(timeout=1800)
def __init__(self, params):
self.params = params
self.remote_addr = None
self.call_back = None
def resolve(self, dns_resolver, remote_addr, call_back):
if remote_addr in UDPAsyncDNSHandler.dns_cache:
if call_back:
call_back("", remote_addr,
UDPAsyncDNSHandler.dns_cache[remote_addr],
self.params)
else:
self.call_back = call_back
self.remote_addr = remote_addr
dns_resolver.resolve(remote_addr[0], self._handle_dns_resolved)
UDPAsyncDNSHandler.dns_cache.sweep()
def _handle_dns_resolved(self, result, error):
if error:
logging.error("%s when resolve DNS" % (error, )) # drop
return self.call_back(error, self.remote_addr, None, self.params)
if result:
ip = result[1]
if ip:
return self.call_back("", self.remote_addr, ip, self.params)
logging.warning("can't resolve %s" % (self.remote_addr, ))
return self.call_back("fail to resolve", self.remote_addr, None,
self.params)
def __init__(self, black_hostname_list=None):
self._loop = None
self._hosts = {}
self._hostname_status = {}
self._hostname_to_cb = {}
self._cb_to_hostname = {}
self._cache = lru_cache.LRUCache(timeout=300)
# read black_hostname_list from config
if type(black_hostname_list) != list:
self._black_hostname_list = []
else:
self._black_hostname_list = list(
map((lambda t: t if type(t) == bytes else t.encode('utf8')),
black_hostname_list))
logging.info('black_hostname_list init as : ' +
str(self._black_hostname_list))
self._sock = None
self._servers = None
self._parse_resolv()
self._parse_hosts()
def __init__(self):
self.client_data = lru_cache.LRUCache(60 * 5)
self.client_id = os.urandom(32)
self.startup_time = int(time.time() - 60 * 30) & 0xFFFFFFFF
self.ticket_buf = {}
def __init__(self,
config,
dns_resolver,
is_local,
stat_callback=None,
stat_counter=None):
self._config = config
if config.get('connect_verbose_info', 0) > 0:
common.connect_log = logging.info
if is_local:
self._listen_addr = config['local_address']
self._listen_port = config['local_port']
self._remote_addr = config['server']
self._remote_port = config['server_port']
else:
self._listen_addr = config['server']
self._listen_port = config['server_port']
self._remote_addr = None
self._remote_port = None
self._dns_resolver = dns_resolver
self._password = common.to_bytes(config['password'])
self._method = config['method']
self._timeout = config['timeout']
self._is_local = is_local
self._udp_cache_size = config['udp_cache']
self._cache = lru_cache.LRUCache(
timeout=config['udp_timeout'],
close_callback=self._close_client_pair)
self._cache_dns_client = lru_cache.LRUCache(
timeout=10, close_callback=self._close_client_pair)
self._client_fd_to_server_addr = {}
#self._dns_cache = lru_cache.LRUCache(timeout=1800)
self._eventloop = None
self._closed = False
self.server_transfer_ul = 0
self.server_transfer_dl = 0
self.server_users = {}
self.server_user_transfer_ul = {}
self.server_user_transfer_dl = {}
if common.to_bytes(config['protocol']) in obfs.mu_protocol():
self._update_users(None, None)
self.protocol_data = obfs.obfs(config['protocol']).init_data()
self._protocol = obfs.obfs(config['protocol'])
server_info = obfs.server_info(self.protocol_data)
server_info.host = self._listen_addr
server_info.port = self._listen_port
server_info.users = self.server_users
server_info.protocol_param = config['protocol_param']
server_info.obfs_param = ''
server_info.iv = b''
server_info.recv_iv = b''
server_info.key_str = common.to_bytes(config['password'])
server_info.key = encrypt.encrypt_key(self._password, self._method)
server_info.head_len = 30
server_info.tcp_mss = 1452
server_info.buffer_size = BUF_SIZE
server_info.overhead = 0
self._protocol.set_server_info(server_info)
self._sockets = set()
self._fd_to_handlers = {}
self._reqid_to_hd = {}
self._data_to_write_to_server_socket = []
self._timeout_cache = lru_cache.LRUCache(
timeout=self._timeout, close_callback=self._close_tcp_client)
self._bind = config.get('out_bind', '')
self._bindv6 = config.get('out_bindv6', '')
self._ignore_bind_list = config.get('ignore_bind', [])
if 'forbidden_ip' in config:
self._forbidden_iplist = config['forbidden_ip']
else:
self._forbidden_iplist = None
if 'forbidden_port' in config:
self._forbidden_portset = config['forbidden_port']
else:
self._forbidden_portset = None
addrs = socket.getaddrinfo(self._listen_addr, self._listen_port, 0,
socket.SOCK_DGRAM, socket.SOL_UDP)
if len(addrs) == 0:
raise Exception("can't get addrinfo for %s:%d" %
(self._listen_addr, self._listen_port))
af, socktype, proto, canonname, sa = addrs[0]
server_socket = socket.socket(af, socktype, proto)
server_socket.bind((self._listen_addr, self._listen_port))
server_socket.setblocking(False)
server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_SNDBUF,
1024 * 1024)
server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_RCVBUF,
1024 * 1024)
self._server_socket = server_socket
self._stat_callback = stat_callback
def __init__(self):
self.client_id = lru_cache.LRUCache()
self.local_client_id = b''
self.connection_id = 0
self.set_max_client(64) # max active client count