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server_all.py
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server_all.py
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import os
import sys
import time
class Logger(object):
DEBUG = 0
INFO = 1
WARN = 2
ERROR = 3
rep = {DEBUG: "D", INFO: "I", WARN: "W", ERROR: "E"}
level = INFO
if "256color" in os.environ.get("TERM", ""):
GREY = "\033[90;20m"
YELLOW_BOLD = "\033[33;1m"
RED_BOLD = "\033[31;1m"
RESET = "\033[0m"
else:
GREY = YELLOW_BOLD = RED_BOLD = RESET = ""
@staticmethod
def set_level(level):
Logger.level = level
@staticmethod
def debug(text=""):
if Logger.level <= Logger.DEBUG:
sys.stderr.write(
(Logger.GREY + "%s [%s] %s\n" + Logger.RESET)
% (time.strftime("%Y-%m-%d %H:%M:%S"), Logger.rep[Logger.DEBUG], text)
)
@staticmethod
def info(text=""):
if Logger.level <= Logger.INFO:
sys.stderr.write(
("%s [%s] %s\n")
% (time.strftime("%Y-%m-%d %H:%M:%S"), Logger.rep[Logger.INFO], text)
)
@staticmethod
def warning(text=""):
if Logger.level <= Logger.WARN:
sys.stderr.write(
(Logger.YELLOW_BOLD + "%s [%s] %s\n" + Logger.RESET)
% (time.strftime("%Y-%m-%d %H:%M:%S"), Logger.rep[Logger.WARN], text)
)
@staticmethod
def error(text=""):
if Logger.level <= Logger.ERROR:
sys.stderr.write(
(Logger.RED_BOLD + "%s [%s] %s\n" + Logger.RESET)
% (time.strftime("%Y-%m-%d %H:%M:%S"), Logger.rep[Logger.ERROR], text)
)
from enum import IntEnum
import struct
import socket
import time
start_time = time.time()
NAT_PMP_VERSION = 0
# 自定义异常类
class NATPMPError(Exception):
"""NAT-PMP 基础异常类"""
pass
class UnsupportedVersionError(NATPMPError):
"""不支持的版本异常"""
pass
class UnsupportedOpcodeError(NATPMPError):
"""不支持的操作码异常"""
pass
class InsufficientDataError(NATPMPError):
"""数据包长度不足异常"""
pass
class MappingError(NATPMPError):
"""与端口映射相关的错误"""
pass
class NATPMPOpCode(IntEnum):
"""NAT-PMP 操作码基类"""
pass
class NATPMPClientOpCode(NATPMPOpCode):
GET_EXTERNAL_ADDRESS = 0 # 获取外部地址
MAP_UDP = 1 # 映射UDP
MAP_TCP = 2 # 映射TCP
class NATPMPServerOpCode(NATPMPOpCode):
RESPONSE_EXTERNAL_ADDRESS = 128 # 响应外部地址
RESPONSE_MAP_UDP = 129 # 响应映射UDP
RESPONSE_MAP_TCP = 130 # 响应映射TCP
class NATPMPErrorCode(IntEnum):
SUCCESS = 0 # 成功
UNSUPPORTED_VERSION = 1 # 不支持的版本
NOT_AUTHORIZED = 2 # 未授权
NETWORK_FAILURE = 3 # 网络错误
OUT_OF_RESOURCES = 4 # 资源不足
UNSUPPORTED_OPCODE = 5 # 不支持的操作码
class NATPMP_Packet:
"""NAT-PMP 数据包基类"""
def __init__(self, opcode: NATPMPOpCode, version: int = NAT_PMP_VERSION):
self.version = version
self.opcode = opcode
def pack(self) -> bytes:
"""打包数据包"""
return struct.pack("!BB", self.version, self.opcode)
@classmethod
def unpack(cls, data: bytes) -> "NATPMP_Packet":
"""解包数据包"""
if len(data) < 2: # 检查数据包长度
raise InsufficientDataError("Not enough data to unpack NATPMP_Packet")
version, opcode = struct.unpack("!BB", data[:2])
if version != NAT_PMP_VERSION:
raise UnsupportedVersionError("Unsupported version")
if opcode == NATPMPClientOpCode.GET_EXTERNAL_ADDRESS:
return RequestExternalAddressPacket()
elif opcode in (NATPMPClientOpCode.MAP_UDP, NATPMPClientOpCode.MAP_TCP):
return RequestMapPacket.unpack(data)
elif opcode in NATPMPServerOpCode.__members__.values():
return NATPMP_ServerPacket.unpack(data)
else:
raise UnsupportedOpcodeError("Unsupported opcode")
class RequestExternalAddressPacket(NATPMP_Packet):
"""获取外部地址请求数据包"""
def __init__(self):
super().__init__(NATPMPClientOpCode.GET_EXTERNAL_ADDRESS)
class RequestMapPacket(NATPMP_Packet):
"""端口映射请求数据包"""
def __init__(
self,
opcode: NATPMPClientOpCode,
internal_port: int,
external_port: int,
lifetime: int,
):
super().__init__(opcode)
self.internal_port = internal_port
self.external_port = external_port
self.lifetime = lifetime
def pack(self) -> bytes:
"""打包端口映射请求数据包"""
return super().pack() + struct.pack(
"!HHHI", 0, self.internal_port, self.external_port, self.lifetime
)
@classmethod
def unpack(cls, data: bytes) -> "RequestMapPacket":
"""解包端口映射请求数据包"""
if len(data) < 12: # 检查数据包长度
raise InsufficientDataError("Not enough data to unpack RequestMapPacket")
version, opcode, _, internal_port, external_port, lifetime = struct.unpack(
"!BBHHHI", data
)
if opcode in (NATPMPClientOpCode.MAP_UDP, NATPMPClientOpCode.MAP_TCP):
return cls(opcode, internal_port, external_port, lifetime)
else:
raise UnsupportedOpcodeError("Not a map request packet")
class NATPMP_ServerPacket(NATPMP_Packet):
"""NAT-PMP 服务器响应数据包"""
def __init__(
self,
opcode: NATPMPServerOpCode,
error: NATPMPErrorCode,
version: int = NAT_PMP_VERSION,
epoch_time: int = 0,
):
if opcode not in NATPMPServerOpCode.__members__.values() and opcode != 0:
raise UnsupportedOpcodeError("Unsupported server opcode")
super().__init__(opcode, version)
self.error = error
self.epoch_time = (
int(time.time() - start_time) if epoch_time == 0 else epoch_time
)
def pack(self) -> bytes:
"""打包服务器响应数据包"""
return super().pack() + struct.pack("!HI", self.error, self.epoch_time)
@classmethod
def unpack(cls, data: bytes) -> "NATPMP_ServerPacket":
"""解包服务器响应数据包"""
if len(data) < 8: # 检查数据包长度
raise InsufficientDataError("Not enough data to unpack NATPMP_ServerPacket")
version, opcode, error, seconds_since_epoch = struct.unpack("!BBHI", data[:8])
if opcode == NATPMPServerOpCode.RESPONSE_EXTERNAL_ADDRESS:
return ResponseExternalAddressPacket.unpack(data)
elif opcode in (
NATPMPServerOpCode.RESPONSE_MAP_UDP,
NATPMPServerOpCode.RESPONSE_MAP_TCP,
):
return ResponseMapPacket.unpack(data)
else:
raise UnsupportedOpcodeError("Not a server response packet")
class ResponseExternalAddressPacket(NATPMP_ServerPacket):
"""获取外部地址响应数据包"""
def __init__(
self,
error: NATPMPErrorCode,
external_ip: str,
version: int = NAT_PMP_VERSION,
epoch_time: int = 0,
):
super().__init__(
NATPMPServerOpCode.RESPONSE_EXTERNAL_ADDRESS, error, version, epoch_time
)
self.external_ip = external_ip
def pack(self) -> bytes:
"""打包外部地址响应数据包"""
return super().pack() + struct.pack("!4s", socket.inet_aton(self.external_ip))
@classmethod
def unpack(cls, data: bytes) -> "ResponseExternalAddressPacket":
"""解包外部地址响应数据包"""
if len(data) < 12: # 检查数据包长度
raise InsufficientDataError(
"Not enough data to unpack ResponseExternalAddressPacket"
)
version, opcode, error, seconds_since_epoch, external_ip_bytes = struct.unpack(
"!BBHI4s", data
)
external_ip = socket.inet_ntoa(external_ip_bytes)
return cls(error, external_ip, version, seconds_since_epoch)
class ResponseMapPacket(NATPMP_ServerPacket):
"""端口映射响应数据包"""
def __init__(
self,
opcode: NATPMPServerOpCode,
error: NATPMPErrorCode,
internal_port: int,
external_port: int,
lifetime: int,
version: int = NAT_PMP_VERSION,
epoch_time: int = 0,
):
super().__init__(opcode, error, version, epoch_time)
self.internal_port = internal_port
self.external_port = external_port
self.lifetime = lifetime
def pack(self) -> bytes:
"""打包端口映射响应数据包"""
return super().pack() + struct.pack(
"!HHI", self.internal_port, self.external_port, self.lifetime
)
@classmethod
def unpack(cls, data: bytes) -> "ResponseMapPacket":
"""解包端口映射响应数据包"""
if len(data) < 12: # 检查数据包长度
raise InsufficientDataError("Not enough data to unpack ResponseMapPacket")
(
version,
opcode,
error,
seconds_since_epoch,
internal_port,
external_port,
lifetime,
) = struct.unpack("!BBHIHHI", data)
return cls(
opcode,
error,
internal_port,
external_port,
lifetime,
version,
seconds_since_epoch,
)
import subprocess
import re
class FirewallRule:
def __init__(self, table_name: str, chain_name: str):
self.table_name = table_name
self.chain_name = chain_name
self.handle = None
self.rule_specifics = None # 用于存储规则特定部分
def enable(self):
"""启用规则，并添加到防火墙中"""
command = f"nft --handle --echo add rule {self.table_name} {self.chain_name} {self.rule_specifics}"
output = self._execute_command(command)
if output:
handle_match = re.search(r"handle (\d+)", output)
if handle_match:
self.handle = handle_match.group(1)
Logger.debug(f"已添加规则，句柄: {self.handle}")
else:
Logger.error(f"未能从输出中提取句柄: {output}")
def disable(self):
"""删除规则"""
if self.handle:
delete_command = f"nft delete rule {self.table_name} {self.chain_name} handle {self.handle}"
self._execute_command(delete_command)
Logger.debug(f"已删除规则，句柄: {self.handle}")
self.handle = None
def _execute_command(self, command):
"""执行系统命令，捕获输出和错误"""
try:
result = subprocess.run(
command,
shell=True,
check=True,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
)
return result.stdout.decode().strip()
except subprocess.CalledProcessError as e:
Logger.error(f"执行命令时出错: {command}\n错误信息: {e.stderr.decode()}")
return None
def __del__(self):
"""析构函数，删除规则"""
self.disable()
class UpnpForwardRule(FirewallRule):
def __init__(
self, protocol: str, internal_port: int, interface="eth0", enable=False
):
super().__init__("inet fw4", "upnp_forward")
self.protocol = protocol.lower() # 可以是 'tcp' 或 'udp'
self.internal_port = internal_port
self.interface = interface # 入站接口，默认为 'eth0'
# 设置规则特定部分
self.rule_specifics = (
f'iif "{self.interface}" {self.protocol} dport {self.internal_port} accept'
)
# 如果需要，启用规则
if enable:
self.enable()
class UpnpPreroutingRule(FirewallRule):
def __init__(
self,
protocol: str,
internal_ip: str,
internal_port: int,
relay_port: int,
interface="eth0",
enable=False,
):
super().__init__("inet fw4", "upnp_prerouting")
self.protocol = protocol.lower() # 可以是 'tcp' 或 'udp'
self.internal_ip = internal_ip
self.internal_port = internal_port
self.relay_port = relay_port
self.interface = interface
# 设置规则特定部分
self.rule_specifics = f'iif "{self.interface}" {self.protocol} dport {self.relay_port} dnat ip to {self.internal_ip}:{self.internal_port}'
# 如果需要，启用规则
if enable:
self.enable()
class InputRule(FirewallRule):
def __init__(self, protocol: str, port: int, interface="eth0", enable=False):
super().__init__("inet fw4", "input")
self.protocol = protocol.lower() # 可以是 'tcp' 或 'udp'
self.port = port
self.interface = interface # 入站接口，默认为 'eth0'
# 设置规则特定部分
self.rule_specifics = (
f'iif "{self.interface}" {self.protocol} dport {self.port} accept'
)
# 如果需要，启用规则
if enable:
self.enable()
#!/usr/bin/env python3
'''
Natter - https://github.com/MikeWang000000/Natter
Copyright (C) 2023 MikeWang000000
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
'''
import os
import re
import sys
import time
import errno
import atexit
import codecs
import random
import socket
import struct
import threading
__version__ = "2.1.1"
class NatterExit(object):
atexit.register(lambda : NatterExit._atexit[0]())
_atexit = [lambda : None]
@staticmethod
def set_atexit(func):
NatterExit._atexit[0] = func
class StunClient(object):
class ServerUnavailable(Exception):
pass
def __init__(self, source_host="0.0.0.0", source_port=0,
interface=None, udp=False):
stun_list = [
"fwa.lifesizecloud.com",
"global.turn.twilio.com",
"turn.cloudflare.com",
"stun.isp.net.au",
"stun.nextcloud.com",
"stun.freeswitch.org",
"stun.voip.blackberry.com",
"stunserver.stunprotocol.org",
"stun.sipnet.com",
"stun.radiojar.com",
"stun.sonetel.com",
"stun.telnyx.com"
]
if not udp:
stun_list = stun_list + [
"turn.cloud-rtc.com:80"
]
else:
stun_list = [
"stun.miwifi.com",
"stun.chat.bilibili.com",
"stun.hitv.com",
"stun.cdnbye.com",
"stun.douyucdn.cn:18000"
] + stun_list
stun_srv_list = []
for item in stun_list:
l = item.split(":", 2) + ["3478"]
stun_srv_list.append((l[0], int(l[1])),)
self.stun_server_list = stun_srv_list
self.source_host = source_host
self.source_port = source_port
self.interface = interface
self.udp = udp
def get_mapping(self):
first = self.stun_server_list[0]
while True:
try:
return self._get_mapping()
except StunClient.ServerUnavailable as ex:
Logger.warning("stun: STUN server %s is unavailable: %s" % (
addr_to_uri(self.stun_server_list[0], udp = self.udp), ex
))
self.stun_server_list.append(self.stun_server_list.pop(0))
if self.stun_server_list[0] == first:
Logger.error("stun: No STUN server is available right now")
# force sleep for 10 seconds, then try the next loop
time.sleep(10)
def _get_mapping(self):
# ref: https://www.rfc-editor.org/rfc/rfc5389
socket_type = socket.SOCK_DGRAM if self.udp else socket.SOCK_STREAM
stun_host, stun_port = self.stun_server_list[0]
sock = socket.socket(socket.AF_INET, socket_type)
socket_set_opt(
sock,
reuse = True,
bind_addr = (self.source_host, self.source_port),
interface = self.interface,
timeout = 3
)
try:
sock.connect((stun_host, stun_port))
inner_addr = sock.getsockname()
self.source_host, self.source_port = inner_addr
sock.send(struct.pack(
"!LLLLL", 0x00010000, 0x2112a442, 0x4e415452,
random.getrandbits(32), random.getrandbits(32)
))
buff = sock.recv(1500)
ip = port = 0
payload = buff[20:]
while payload:
attr_type, attr_len = struct.unpack("!HH", payload[:4])
if attr_type in [1, 32]:
_, _, port, ip = struct.unpack("!BBHL", payload[4:4+attr_len])
if attr_type == 32:
port ^= 0x2112
ip ^= 0x2112a442
break
payload = payload[4 + attr_len:]
else:
raise ValueError("Invalid STUN response")
outer_addr = socket.inet_ntop(socket.AF_INET, struct.pack("!L", ip)), port
Logger.debug("stun: Got address %s from %s, source %s" % (
addr_to_uri(outer_addr, udp=self.udp),
addr_to_uri((stun_host, stun_port), udp=self.udp),
addr_to_uri(inner_addr, udp=self.udp)
))
return inner_addr, outer_addr
except (OSError, ValueError, struct.error, socket.error) as ex:
raise StunClient.ServerUnavailable(ex)
finally:
sock.close()
class KeepAlive(object):
def __init__(self, host, port, source_host, source_port, interface=None, udp=False):
self.sock = None
self.host = host
self.port = port
self.source_host = source_host
self.source_port = source_port
self.interface = interface
self.udp = udp
self.reconn = False
def __del__(self):
if self.sock:
self.sock.close()
def _connect(self):
sock_type = socket.SOCK_DGRAM if self.udp else socket.SOCK_STREAM
sock = socket.socket(socket.AF_INET, sock_type)
socket_set_opt(
sock,
reuse = True,
bind_addr = (self.source_host, self.source_port),
interface = self.interface,
timeout = 3
)
sock.connect((self.host, self.port))
if not self.udp:
Logger.debug("keep-alive: Connected to host %s" % (
addr_to_uri((self.host, self.port), udp=self.udp)
))
if self.reconn:
Logger.info("keep-alive: connection restored")
self.reconn = False
self.sock = sock
def keep_alive(self):
if self.sock is None:
self._connect()
if self.udp:
self._keep_alive_udp()
else:
self._keep_alive_tcp()
Logger.debug("keep-alive: OK")
def reset(self):
if self.sock is not None:
self.sock.close()
self.sock = None
self.reconn = True
def _keep_alive_tcp(self):
# send a HTTP request
self.sock.sendall((
"HEAD /natter-keep-alive HTTP/1.1\r\n"
"Host: %s\r\n"
"User-Agent: curl/8.0.0 (Natter)\r\n"
"Accept: */*\r\n"
"Connection: keep-alive\r\n"
"\r\n" % self.host
).encode())
buff = b""
try:
while True:
buff = self.sock.recv(4096)
if not buff:
raise OSError("Keep-alive server closed connection")
except socket.timeout as ex:
if not buff:
raise ex
return
def _keep_alive_udp(self):
# send a DNS request
self.sock.send(
struct.pack(
"!HHHHHH", random.getrandbits(16), 0x0100, 0x0001, 0x0000, 0x0000, 0x0000
) + b"\x09keepalive\x06natter\x00" + struct.pack("!HH", 0x0001, 0x0001)
)
buff = b""
try:
while True:
buff = self.sock.recv(1500)
if not buff:
raise OSError("Keep-alive server closed connection")
except socket.timeout as ex:
if not buff:
raise ex
# fix: Keep-alive cause STUN socket timeout on Windows
if sys.platform == "win32":
self.reset()
return
class NatterExitException(Exception):
pass
class NatterRetryException(Exception):
pass
def socket_set_opt(sock, reuse=False, bind_addr=None, interface=None, timeout=-1):
if reuse:
if hasattr(socket, "SO_REUSEADDR"):
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
if hasattr(socket, "SO_REUSEPORT"):
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
if interface is not None:
if hasattr(socket, "SO_BINDTODEVICE"):
sock.setsockopt(
socket.SOL_SOCKET, socket.SO_BINDTODEVICE, interface.encode() + b"\0"
)
else:
raise RuntimeError("Binding to an interface is not supported on your platform.")
if bind_addr is not None:
sock.bind(bind_addr)
if timeout != -1:
sock.settimeout(timeout)
return sock
def start_daemon_thread(target, args=()):
th = threading.Thread(target=target, args=args)
th.daemon = True
th.start()
return th
def closed_socket_ex(ex):
if not hasattr(ex, "errno"):
return False
if hasattr(errno, "ECONNABORTED") and ex.errno == errno.ECONNABORTED:
return True
if hasattr(errno, "EBADFD") and ex.errno == errno.EBADFD:
return True
if hasattr(errno, "EBADF") and ex.errno == errno.EBADF:
return True
if hasattr(errno, "WSAEBADF") and ex.errno == errno.WSAEBADF:
return True
if hasattr(errno, "WSAEINTR") and ex.errno == errno.WSAEINTR:
return True
return False
def fix_codecs(codec_list = ["utf-8", "idna"]):
missing_codecs = []
for codec_name in codec_list:
try:
codecs.lookup(codec_name)
except LookupError:
missing_codecs.append(codec_name.lower())
def search_codec(name):
if name.lower() in missing_codecs:
return codecs.CodecInfo(codecs.ascii_encode, codecs.ascii_decode, name="ascii")
if missing_codecs:
codecs.register(search_codec)
def split_url(url):
m = re.match(
r"^http://([^\[\]:/]+)(?:\:([0-9]+))?(/\S*)?$", url
)
if not m:
raise ValueError("Unsupported URL: %s" % url)
hostname, port_str, path = m.groups()
port = 80
if port_str:
port = int(port_str)
if not path:
path = "/"
return hostname, port, path
def full_url(u, refurl):
if not u.startswith("/"):
return u
hostname, port, _ = split_url(refurl)
return "http://%s:%d" % (hostname, port) + u
def addr_to_str(addr):
return "%s:%d" % addr
def addr_to_uri(addr, udp=False):
if udp:
return "udp://%s:%d" % addr
else:
return "tcp://%s:%d" % addr
def validate_ip(s, err=True):
try:
socket.inet_aton(s)
return True
except (OSError, socket.error):
if err:
raise ValueError("Invalid IP address: %s" % s)
return False
def validate_port(s, err=True):
if str(s).isdigit() and int(s) in range(65536):
return True
if err:
raise ValueError("Invalid port number: %s" % s)
return False
def validate_addr_str(s, err=True):
l = str(s).split(":", 1)
if len(l) == 1:
return True
return validate_port(l[1], err)
def validate_positive(s, err=True):
if str(s).isdigit() and int(s) > 0:
return True
if err:
raise ValueError("Not a positive integer: %s" % s)
return False
def validate_filepath(s, err=True):
if os.path.isfile(s):
return True
if err:
raise ValueError("File not found: %s" % s)
return False
def ip_normalize(ipaddr):
return socket.inet_ntoa(socket.inet_aton(ipaddr))
from dataclasses import dataclass
from datetime import datetime, timedelta
from typing import Any, Tuple, Dict
from threading import Thread, Event, Lock
import socket
import http.client
import re
import os
global_thread_lock = Lock()
def is_valid_ip(ip):
# 使用提供的正则表达式检查IP地址的有效性
if not isinstance(ip, str):
return False
pattern = r"(?:(?:1[0-9][0-9]\.)|(?:2[0-4][0-9]\.)|(?:25[0-5]\.)|(?:[1-9][0-9]\.)|(?:[0-9]\.)){3}(?:(?:1[0-9][0-9])|(?:2[0-4][0-9])|(?:25[0-5])|(?:[1-9][0-9])|(?:[0-9]))"
return re.match(pattern, ip) is not None
def is_private_ip(ip):
# 定义局域网 IP 的正则表达式
private_ip_pattern = r"^(?:(?:10(?:(?:\.1[0-9][0-9])|(?:\.2[0-4][0-9])|(?:\.25[0-5])|(?:\.[1-9][0-9])|(?:\.[0-9])))|(?:172(?:\.(?:1[6-9])|(?:2[0-9])|(?:3[0-1])))|(?:192\.168))(?:(?:\.1[0-9][0-9])|(?:\.2[0-4][0-9])|(?:\.25[0-5])|(?:\.[1-9][0-9])|(?:\.[0-9])){2}$"
# 使用 re.match 来判断 ip 是否匹配
return re.match(private_ip_pattern, ip) is not None
def update_upnpd_config(file_path="/etc/config/upnpd"):
# 检查文件是否存在
if not os.path.exists(file_path):
return
# 读取文件内容
with open(file_path, "r") as file:
content = file.read()
# 使用 replace 方法更新选项
content = content.replace("option enabled '1'", "option enabled '0'")
content = content.replace("option enable_upnp '1'", "option enable_upnp '0'")
content = content.replace("option enable_natpmp '1'", "option enable_natpmp '0'")
content = content.replace("option use_stun '1'", "option use_stun '0'")
content = content.replace(
"option force_forwarding '1'", "option force_forwarding '0'"
)
# 写回修改后的内容
with open(file_path, "w") as file:
file.write(content)
os.system("/etc/init.d/miniupnpd restart")
Logger.debug(f"文件已更新: {file_path}")
# 定义缓存变量
cache = {"ip": None, "timestamp": 0}
def get_ip():
timeout = 0.5
cache_duration = 600 # 缓存有效期为 x 秒
# 检查缓存是否有效
current_time = time.time()
if is_valid_ip(cache["ip"]) and current_time - cache["timestamp"] < cache_duration:
return (200, cache["ip"])
# 创建 HTTP 连接，设置超时时间
conn = http.client.HTTPConnection("api.ipify.cn", timeout=timeout)
try:
# 发送 GET 请求
conn.request("GET", "/")
# 获取响应
response = conn.getresponse()
# 读取并解码响应内容
data = response.read().decode("utf-8")
# 检查响应状态码
if response.status == 200:
if is_valid_ip(data):
# 更新缓存
cache["ip"] = data
cache["timestamp"] = current_time
return (response.status, data) # 返回状态码和有效的 IP 地址
else:
return (400, "返回的内容不是有效的 IP 地址") # 状态码设置为 400
else:
return (response.status, f"请求失败，状态码: {response.status}")
except http.client.HTTPException as e:
return (500, f"HTTP 请求失败: {e}") # 处理HTTP异常
except Exception as e:
return (500, f"发生错误: {e}") # 处理其他异常
finally:
# 关闭连接
conn.close()
def new_socket_reuse(family, type):
sock = socket.socket(family, type)
if hasattr(socket, "SO_REUSEADDR"):
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
if hasattr(socket, "SO_REUSEPORT"):
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
return sock
def get_free_port(proto_type: str = "TCP") -> int:
# 创建一个新的套接字
sock = new_socket_reuse(
socket.AF_INET, socket.SOCK_STREAM if proto_type == "TCP" else socket.SOCK_DGRAM
)
sock.bind(("", 0)) # 绑定到任何地址的一个随机端口
ret = sock.getsockname()[1] # 获取绑定的端口
sock.close() # 关闭套接字
return ret
def keepalive_loop(
stun: StunClient,
keep_alive: KeepAlive,
udp_mode,
outer_addr,
stopEvent: Event,
interval=15,
):
need_recheck = False
cnt = 0
while True and not stopEvent.is_set():
# force recheck every 20th loop
cnt = (cnt + 1) % 20
if cnt == 0:
need_recheck = True
if need_recheck:
Logger.debug("Start recheck")
need_recheck = False
# then check through STUN
_, outer_addr_curr = stun.get_mapping()
if outer_addr_curr != outer_addr:
Logger.warning(f"STUN映射改变：{outer_addr} -> {outer_addr_curr}")
return
# end of recheck
ts = time.time()
try:
keep_alive.keep_alive()
except (OSError, socket.error) as ex:
if udp_mode:
Logger.debug("keep-alive: UDP response not received: %s" % ex)
else:
Logger.error("keep-alive: connection broken: %s" % ex)
keep_alive.reset()
need_recheck = True
sleep_sec = interval - (time.time() - ts)
while sleep_sec > 0 and not stopEvent.is_set():
time.sleep(1)
sleep_sec -= 1
class KeepAliveThread:
"""用于在对象销毁时自动停止线程"""
def __init__(
self,
stun: StunClient,
keep_alive: KeepAlive,
udp_mode,
outer_addr,
interval=15,
auto_start=True,
):
self.outer_addr = outer_addr
self.stopEvent = Event()
self.thread = Thread(
target=keepalive_loop,
args=(stun, keep_alive, udp_mode, outer_addr, self.stopEvent, interval),