392 lines
14 KiB
Python
Executable File
392 lines
14 KiB
Python
Executable File
#!/usr/bin/env python3
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import argparse, select, socket, typing
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CAPS = ["multi-prefix", "Chghost", "chghost", "batch", "account-notify", "extended-join", "echo-message", "invite-notify", "draft/labeled-response-0.2", "draft/message-tags", "cap-notify", "bitbot.dev/multiline", "znc.in/self-message", "sasl"]
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LONG_PING = "longpong" + ("a"*504)
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HENLO = """
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dP dP
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88 88
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88d888b. .d8888b. 88d888b. 88 .d8888b.
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88' `88 88ooood8 88' `88 88 88' `88
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88 88 88. ... 88 88 88 88. .88
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dP dP `88888P' dP dP dP `88888P'
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""".split("\n")
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class IRCLine(object):
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def __init__(self, command: str, args: typing.List[str]):
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self.command = command
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self.args = args
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def __str__(self):
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parts = []
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parts.append(self.command)
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if self.args:
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parts.extend(self.args[:-1])
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if " " in self.args[-1] or self.args[-1][0] == ":":
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parts.append(":%s" % self.args[-1])
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else:
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parts.append(self.args[-1])
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return " ".join(parts)
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def _irc_tokenize(line):
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tags = None
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if line[0] == "@" and " " in line:
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tags, line = line.split(" ", 1)
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trailing = None
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if " :" in line:
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line, trailing = line.split(" :", 1)
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command, sep, line = line.partition(" ")
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command = command.upper()
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args = []
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if sep:
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args = line.split(" ")
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if not trailing == None:
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args.append(trailing)
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return IRCLine(command, args)
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class Client(object):
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def __init__(self, sock, verbose):
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self._socket = sock
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self._verbose = verbose
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self._read_buffer = b""
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self._write_buffer = b""
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self.kill_on_write = False
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self.connected = True
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self.cap_req = []
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self.criteria = {
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"cap": False,
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"cap_302": False,
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"cap_req_count": 0,
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"cap_list": False,
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"sasl_attempt": False,
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"pong_colon": False,
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"longpong": False,
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"longpong_overflow": False,
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"spacepong": False,
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"lowerpong": False,
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"twopong": False,
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"twopong_cut": False,
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"user_hostname": "",
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"user_servername": "",
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"nick_first": False,
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"protoctl": False
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}
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self.terminal_pong = False
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self.user = False
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def fileno(self):
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return self._socket.fileno()
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def recv(self):
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data = self._read_buffer+self._socket.recv(1024)
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if not data:
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return []
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lines = [line.strip(b"\r") for line in data.split(b"\n")]
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self._read_buffer = lines.pop(-1)
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try:
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return [line.decode("utf8") for line in lines]
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except:
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return []
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def send(self, line: str):
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if self._verbose:
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print("send:", line)
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self._write_buffer += ("%s\r\n" % line).encode("utf8")
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def _send(self):
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try:
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bytes_sent = self._socket.send(self._write_buffer)
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except:
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self.disconnect()
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return
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self._write_buffer = self._write_buffer[bytes_sent:]
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if not self._write_buffer and self.kill_on_write:
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self.disconnect()
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def write_waiting(self):
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return bool(self._write_buffer)
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def disconnect(self):
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self.connected = False
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self._socket.close()
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def snotice(self, s: str):
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self.send(":ircfuz NOTICE * :%s" % s)
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def _detect(client):
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if not client.criteria["cap"]:
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if (client.criteria["user_hostname"].isdigit() and
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client.criteria["user_servername"] == "*"):
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if client.criteria["longpong"] or not client.criteria["spacepong"]:
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if client.criteria["pong_colon"]:
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if client.criteria["lowerpong"]:
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return "weechat"
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else:
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return "erc"
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else:
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return "limechat"
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elif client.criteria["user_hostname"] == "8":
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return "polari"
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elif (client.criteria["user_hostname"] == "*" and
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client.criteria["user_servername"] == "*"):
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return "burd"
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elif (client.criteria["user_hostname"] == "127.0.0.1" and
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client.criteria["user_servername"] == "127.0.0.1"):
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return "mibbit"
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elif (client.criteria["user_hostname"] == "*" and
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not client.criteria["user_servername"] == "*"):
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return "pidgin"
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elif (client.criteria["user_hostname"] == "+iw" and
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not client.criteria["pong_colon"]):
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return "bitchx"
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elif (client.criteria["longpong"] and
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not client.criteria["spacepong"] and
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client.criteria["user_hostname"] == "localhost"):
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if client.criteria["twopong_cut"]:
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return "sic"
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else:
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return "androirc"
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elif client.criteria["user_hostname"].startswith("/"):
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return "aicia"
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elif client.criteria["longpong_overflow"]:
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return "ii"
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elif client.criteria["twopong_cut"]:
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return "irssi"
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elif (not client.criteria["lowerpong"] and
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client.criteria["user_servername"] == "0"):
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return "turboirc"
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else:
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if client.criteria["cap_302"]:
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if "bitbot.dev/multiline" in client.cap_req:
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return "bitbot"
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elif client.criteria["user_hostname"] == "8":
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return "quassel"
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elif client.criteria["twopong"]:
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return "irccloud"
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elif client.criteria["twopong_cut"]:
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if "echo-message" in client.cap_req:
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return "thelounge"
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else:
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return "kiwi"
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elif (not client.criteria["user_servername"] == "*" and
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client.criteria["pong_colon"]):
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if not client.criteria["spacepong"]:
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return "icechat"
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else:
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return "hexchat"
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elif (client.criteria["user_hostname"] == "*" and
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client.criteria["user_servername"] == "*"):
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return "mutter"
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elif client.criteria["cap_req_count"] > 1:
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if client.criteria["pong_colon"]:
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return "mirc"
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else:
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return "textual"
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elif "batch" in client.cap_req and not "chghost" in client.cap_req:
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return "revolution"
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elif "draft/message-tags" in client.cap_req:
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return "palaver"
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elif client.criteria["longpong"]:
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return "weechat"
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else:
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return "igloo"
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else:
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if not client.criteria["user_hostname"].isdigit():
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if client.criteria["cap_req_count"] > 1:
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return "znc"
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elif client.criteria["cap_req_count"] == 1:
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return "irssi"
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else:
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return "qicr"
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elif client.criteria["user_hostname"] == "8":
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return "konversation"
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def _color(irc, value, expected):
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if value == expected:
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# good
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return ("\x0303%s" if irc else "\033[32m%s"
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) % value
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else:
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# bad
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return ("\x0304%s" if irc else "\033[31m%s"
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) % value
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def _result(client, key, expected=None):
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value = client.criteria[key]
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irc_value = value
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print_value = value
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if not expected == None:
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irc_value = _color(True, value, expected)
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print_value = _color(False, value, expected)
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print("* %s: %s\033[0m" % (key, print_value))
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client.snotice("* %s: %s" % (key, irc_value))
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def _end(client):
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_result(client, "pong_colon", False)
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_result(client, "longpong", False)
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_result(client, "longpong_overflow", False)
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_result(client, "spacepong", True)
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_result(client, "lowerpong", True)
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_result(client, "twopong", False)
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_result(client, "twopong_cut", False)
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_result(client, "cap")
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if client.criteria["cap"]:
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_result(client, "cap_302")
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_result(client, "cap_req_count", 1)
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_result(client, "cap_list", False)
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_result(client, "sasl_attempt", False)
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_result(client, "protoctl")
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_result(client, "user_hostname", "0")
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_result(client, "user_servername", "*")
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_result(client, "nick_first")
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detection = _detect(client)
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if not detection == None:
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print("detected:", detection)
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client.snotice("yr %s innit" % detection)
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else:
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print("detection failed")
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client.snotice("idk who u r :(")
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client.kill_on_write = True
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print("")
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def listen(port: int, verbose: bool):
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server_socket = socket.socket()
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server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
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server_socket.bind(("", port))
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server_socket.listen(1)
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clients = {}
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while True:
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write_waiting = []
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dead = []
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for fd, client in clients.items():
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if not client.connected:
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dead.append(fd)
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if client.write_waiting():
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write_waiting.append(client)
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for fd in dead:
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del clients[fd]
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read_waiting = [server_socket]+list(clients.values())
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rsocks, wsocks, esocks = select.select(read_waiting, write_waiting, [])
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for client in rsocks:
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if client == server_socket:
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client, addr = server_socket.accept()
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print("new client")
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new_client = Client(client, verbose)
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clients[client.fileno()] = new_client
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for line in HENLO:
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new_client.snotice("\x0303%s" % line)
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new_client.snotice("detectin yr client lmao")
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new_client.send(
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":ircfuz 005 * NAMESX :are supported by this server")
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new_client.send("PING :cleanping")
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new_client.send("PING :%s" % LONG_PING)
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new_client.send("PING a :twoping")
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new_client.send("ping :lower")
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new_client.send("PING :spacepong a")
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new_client.send("PING :endpong")
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else:
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lines = client.recv()
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if not lines:
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client.connected = False
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continue
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for raw_line in lines:
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if verbose:
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print("recv:", raw_line.strip("\r"))
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if not raw_line.strip():
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continue
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line = _irc_tokenize(raw_line)
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if line.command == "NICK":
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client.criteria["nick_first"] = not client.user
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elif line.command == "USER":
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client.user = True
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client.criteria["user_hostname"] = line.args[1]
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client.criteria["user_servername"] = line.args[2]
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if not client.criteria["cap"]:
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client.terminal_pong = True
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elif line.command == "PONG" and line.args:
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if "longpong" in line.args[0]:
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client.criteria["longpong"] = line.args[0] == LONG_PING
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if "\r" in line.args[0]:
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client.criteria["longpong_overflow"] = True
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client.criteria["pong_colon"] = " :" in raw_line
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if line.args[0] == "a twoping":
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client.criteria["twopong"] = True
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if line.args[0] == "twoping":
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client.criteria["twopong_cut"] = True
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if line.args[0] == "lower":
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client.criteria["lowerpong"] = True
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if "spacepong" in line.args[0]:
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client.criteria["spacepong"] = " " in line.args[0]
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if line.args[0] == "endpong" and client.terminal_pong:
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_end(client)
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break
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elif line.command == "CAP":
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client.criteria["cap"] = True
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if line.args[0] == "LS":
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if len(line.args) > 1 and line.args[1] == "302":
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client.criteria["cap_302"] = True
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client.send(":ircfuz CAP * LS :%s" % " ".join(CAPS))
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elif line.args[0] == "REQ":
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client.criteria["cap_req_count"] += 1
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caps = line.args[1].split(" ")
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client.cap_req.extend(caps)
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client.send(":ircfuz CAP * ACK :%s" % line.args[1])
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elif line.args[0] == "LIST":
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client.criteria["cap_list"] = True
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elif line.args[0] == "END":
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_end(client)
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break
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elif line.command == "AUTHENTICATE":
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client.criteria["sasl_attempt"] = True
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client.send(":ircfuz 904 * :no sasl buddy")
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elif line.command == "PROTOCTL":
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client.criteria["protoctl"] = True
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else:
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client.disconnect()
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for wsock in wsocks:
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wsock._send()
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if __name__ == "__main__":
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parser = argparse.ArgumentParser("detect IRC clients by handshake behavior")
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parser.add_argument("-p", "--port", type=int, default=6661)
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parser.add_argument("-V", "--verbose", action="store_true")
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args = parser.parse_args()
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listen(args.port, args.verbose)
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