299 lines
10 KiB
Python
Executable File
299 lines
10 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
import argparse, select, socket, typing
|
|
|
|
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"]
|
|
|
|
LONG_PING = "a"*512
|
|
|
|
HENLO = """
|
|
dP dP
|
|
88 88
|
|
88d888b. .d8888b. 88d888b. 88 .d8888b.
|
|
88' `88 88ooood8 88' `88 88 88' `88
|
|
88 88 88. ... 88 88 88 88. .88
|
|
dP dP `88888P' dP dP dP `88888P'
|
|
""".split("\n")
|
|
|
|
class IRCLine(object):
|
|
def __init__(self, command: str, args: typing.List[str]):
|
|
self.command = command
|
|
self.args = args
|
|
def __str__(self):
|
|
parts = []
|
|
parts.append(self.command)
|
|
|
|
if self.args:
|
|
parts.extend(self.args[:-1])
|
|
if " " in self.args[-1] or self.args[-1][0] == ":":
|
|
parts.append(":%s" % self.args[-1])
|
|
else:
|
|
parts.append(self.args[-1])
|
|
return " ".join(parts)
|
|
|
|
def _irc_tokenize(line):
|
|
tags = None
|
|
if line[0] == "@" and " " in line:
|
|
tags, line = line.split(" ", 1)
|
|
|
|
trailing = None
|
|
if " :" in line:
|
|
line, trailing = line.split(" :", 1)
|
|
|
|
command, sep, line = line.partition(" ")
|
|
command = command.upper()
|
|
|
|
args = []
|
|
if sep:
|
|
args = line.split(" ")
|
|
|
|
if not trailing == None:
|
|
args.append(trailing)
|
|
return IRCLine(command, args)
|
|
|
|
class Client(object):
|
|
def __init__(self, sock, verbose):
|
|
self._socket = sock
|
|
self._verbose = verbose
|
|
self._read_buffer = b""
|
|
self._write_buffer = b""
|
|
self.kill_on_write = False
|
|
self.connected = True
|
|
|
|
self.cap = False
|
|
self.cap_req = []
|
|
self.cap_302 = False
|
|
self.cap_req_count = 0
|
|
|
|
self.long_pong = False
|
|
self.pong_colon = False
|
|
self.terminal_pong = False
|
|
|
|
self.user = False
|
|
self.nick_first = False
|
|
|
|
self.user_hostname = None
|
|
self.user_hostname_rfc1459 = False
|
|
self.user_servername = None
|
|
self.user_servername_rfc1459 = False
|
|
|
|
self.sent_433 = False
|
|
self.retry_nick = ""
|
|
|
|
self.sasl_attempt = False
|
|
|
|
def fileno(self):
|
|
return self._socket.fileno()
|
|
|
|
def recv(self):
|
|
data = self._read_buffer+self._socket.recv(1024)
|
|
if not data:
|
|
return []
|
|
lines = [line.strip(b"\r") for line in data.split(b"\n")]
|
|
self._read_buffer = lines.pop(-1)
|
|
try:
|
|
return [line.decode("utf8") for line in lines]
|
|
except:
|
|
return []
|
|
|
|
def send(self, line: str):
|
|
if self._verbose:
|
|
print("send:", line)
|
|
self._write_buffer += ("%s\r\n" % line).encode("utf8")
|
|
def _send(self):
|
|
bytes_sent = self._socket.send(self._write_buffer)
|
|
self._write_buffer = self._write_buffer[bytes_sent:]
|
|
if not self._write_buffer and self.kill_on_write:
|
|
self.disconnect()
|
|
def write_waiting(self):
|
|
return bool(self._write_buffer)
|
|
|
|
def disconnect(self):
|
|
self.connected = False
|
|
self._socket.close()
|
|
|
|
def _detect(client):
|
|
if not client.cap_req:
|
|
if (not client.user_hostname_rfc1459 and
|
|
not client.user_servername_rfc1459):
|
|
if client.long_pong:
|
|
if client.pong_colon:
|
|
return "weechat"
|
|
else:
|
|
return "limechat"
|
|
elif client.user_hostname == "8":
|
|
return "polari"
|
|
elif client.user_hostname == "*" and client.user_servername == "*":
|
|
return "burd"
|
|
elif (client.user_hostname == "127.0.0.1" and
|
|
client.user_servername == "127.0.0.1"):
|
|
return "mibbit"
|
|
elif (client.user_hostname == "*" and
|
|
client.user_servername_rfc1459):
|
|
return "pidgin"
|
|
elif client.user_hostname == "+iw" and not client.pong_colon:
|
|
return "bitchx"
|
|
else:
|
|
if client.cap_302:
|
|
if "bitbot.dev/multiline" in client.cap_req:
|
|
return "bitbot"
|
|
elif client.user_hostname == "8":
|
|
return "quassel"
|
|
elif client.retry_nick.startswith("nickecho"):
|
|
return "thelounge"
|
|
elif client.user_servername_rfc1459 and client.pong_colon:
|
|
return "hexchat"
|
|
elif client.user_hostname == "*" and client.user_servername == "*":
|
|
return "mutter"
|
|
elif client.cap_req_count > 1:
|
|
if client.pong_colon:
|
|
return "mirc"
|
|
else:
|
|
return "textual"
|
|
elif "batch" in client.cap_req and not "chghost" in client.cap_req:
|
|
if "znc.in/self-message" in client.cap_req:
|
|
return "kiwi"
|
|
else:
|
|
return "revolution"
|
|
elif "draft/message-tags" in client.cap_req:
|
|
return "palaver"
|
|
elif client.long_pong:
|
|
if client.retry_nick.endswith("_"):
|
|
return "irccloud"
|
|
else:
|
|
return "weechat"
|
|
else:
|
|
return "igloo"
|
|
else:
|
|
if client.user_hostname_rfc1459:
|
|
if client.cap_req_count > 1:
|
|
return "znc"
|
|
else:
|
|
return "irssi"
|
|
elif client.user_hostname == "8":
|
|
return "konversation"
|
|
|
|
def _end(client):
|
|
print("long pong:", client.long_pong)
|
|
print("pong colon:", client.pong_colon)
|
|
print("nick first:", client.nick_first)
|
|
print("retry nick:", client.retry_nick)
|
|
print("hostname servername:", client.user_hostname, client.user_servername)
|
|
print("ircv3:", client.cap)
|
|
if client.cap:
|
|
print("cap req 302:", client.cap_302)
|
|
print("caps:", ", ".join(sorted(client.cap_req)))
|
|
print("cap req count:", client.cap_req_count)
|
|
|
|
detection = _detect(client)
|
|
if not detection == None:
|
|
print("detected:", detection)
|
|
client.send(":ircfuz NOTICE * :yr %s innit" % detection)
|
|
else:
|
|
print("detection failed")
|
|
client.send(":ircfuz NOTICE * :idk who u r :(")
|
|
client.kill_on_write = True
|
|
print("")
|
|
|
|
def listen(port: int, verbose: bool):
|
|
server_socket = socket.socket()
|
|
server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
|
|
server_socket.bind(("", port))
|
|
server_socket.listen(1)
|
|
clients = {}
|
|
|
|
while True:
|
|
write_waiting = []
|
|
dead = []
|
|
for fd, client in clients.items():
|
|
if not client.connected:
|
|
dead.append(fd)
|
|
if client.write_waiting():
|
|
write_waiting.append(client)
|
|
for fd in dead:
|
|
del clients[fd]
|
|
|
|
read_waiting = [server_socket]+list(clients.values())
|
|
|
|
rsocks, wsocks, esocks = select.select(read_waiting, write_waiting, [])
|
|
for rsock in rsocks:
|
|
if rsock == server_socket:
|
|
client, addr = server_socket.accept()
|
|
print("new client")
|
|
new_client = Client(client, verbose)
|
|
clients[client.fileno()] = new_client
|
|
|
|
for line in HENLO:
|
|
new_client.send(":ircfuz NOTICE * :\x0303%s" % line)
|
|
new_client.send(":ircfuz NOTICE * :detectin yr client lmao")
|
|
|
|
new_client.send("PING :%s" % LONG_PING)
|
|
else:
|
|
lines = rsock.recv()
|
|
if not lines:
|
|
client.connected = False
|
|
continue
|
|
for raw_line in lines:
|
|
if verbose:
|
|
print("recv:", raw_line)
|
|
|
|
if not raw_line.strip():
|
|
continue
|
|
|
|
line = _irc_tokenize(raw_line)
|
|
if line.command == "NICK":
|
|
if not client.sent_433:
|
|
client.sent_433 = True
|
|
client.nick_first = not client.user
|
|
client.send(":ircfuz 433 * nickecho :nah lol")
|
|
else:
|
|
client.retry_nick = line.args[0]
|
|
|
|
elif line.command == "USER":
|
|
client.user = True
|
|
client.user_hostname = line.args[1]
|
|
if not line.args[1].isdigit():
|
|
client.user_hostname_rfc1459 = True
|
|
|
|
client.user_servername = line.args[2]
|
|
if not line.args[2] == "*":
|
|
client.user_servername_rfc1459 = True
|
|
if not client.cap:
|
|
client.terminal_pong = True
|
|
|
|
elif line.command == "PONG":
|
|
client.pong_colon = " :" in raw_line
|
|
client.long_pong = line.args[0] == LONG_PING
|
|
|
|
if client.terminal_pong:
|
|
_end(client)
|
|
break
|
|
|
|
elif line.command == "CAP":
|
|
client.cap = True
|
|
if line.args[0] == "LS":
|
|
if len(line.args) > 1 and line.args[1] == "302":
|
|
client.cap_302 = True
|
|
client.send(":ircfuz CAP * LS :%s" % " ".join(CAPS))
|
|
elif line.args[0] == "REQ":
|
|
client.cap_req_count += 1
|
|
caps = line.args[1].split(" ")
|
|
client.cap_req.extend(caps)
|
|
client.send(":ircfuz CAP * ACK :%s" % line.args[1])
|
|
elif line.args[0] == "END":
|
|
_end(client)
|
|
break
|
|
elif line.command == "AUTHENTICATE":
|
|
client.sasl_attempt = True
|
|
client.send(":ircfuz 904 * :no sasl buddy")
|
|
else:
|
|
client.disconnect()
|
|
for wsock in wsocks:
|
|
wsock._send()
|
|
|
|
if __name__ == "__main__":
|
|
parser = argparse.ArgumentParser("detect IRC clients by handshake behavior")
|
|
parser.add_argument("-p", "--port", type=int, default=6661)
|
|
parser.add_argument("-V", "--verbose", action="store_true")
|
|
args = parser.parse_args()
|
|
listen(args.port, args.verbose)
|