"""
//  -------------------------------------------------------------
//  author        Giga
//  project       qeeqbox/honeypots
//  email         gigaqeeq@gmail.com
//  description   app.py (CLI)
//  licensee      AGPL-3.0
//  -------------------------------------------------------------
//  contributors list qeeqbox/honeypots/graphs/contributors
//  -------------------------------------------------------------
"""

from warnings import filterwarnings

filterwarnings(action="ignore", module=".*OpenSSL.*")

from twisted.internet.protocol import Protocol, Factory
from twisted.internet import reactor
from twisted.python import log as tlog
from subprocess import Popen
from os import path, getenv
from honeypots.helper import (
    close_port_wrapper,
    get_free_port,
    kill_server_wrapper,
    server_arguments,
    setup_logger,
    disable_logger,
    set_local_vars,
    check_if_server_is_running,
    set_local_vars,
)
from uuid import uuid4
from contextlib import suppress


class QRedisServer:
    def __init__(self, **kwargs):
        self.auto_disabled = None
        self.process = None
        self.uuid = "honeypotslogger" + "_" + __class__.__name__ + "_" + str(uuid4())[:8]
        self.config = kwargs.get("config", "")
        if self.config:
            self.logs = setup_logger(__class__.__name__, self.uuid, self.config)
            set_local_vars(self, self.config)
        else:
            self.logs = setup_logger(__class__.__name__, self.uuid, None)
        self.ip = kwargs.get("ip", None) or (hasattr(self, "ip") and self.ip) or "0.0.0.0"
        self.port = (
            (kwargs.get("port", None) and int(kwargs.get("port", None)))
            or (hasattr(self, "port") and self.port)
            or 6379
        )
        self.username = (
            kwargs.get("username", None) or (hasattr(self, "username") and self.username) or "test"
        )
        self.password = (
            kwargs.get("password", None) or (hasattr(self, "password") and self.password) or "test"
        )
        self.options = (
            kwargs.get("options", "")
            or (hasattr(self, "options") and self.options)
            or getenv("HONEYPOTS_OPTIONS", "")
            or ""
        )
        disable_logger(1, tlog)

    def redis_server_main(self):
        _q_s = self

        class CustomRedisProtocol(Protocol):
            def check_bytes(self, string):
                if isinstance(string, bytes):
                    return string.decode()
                else:
                    return str(string)

            def get_command(self, data):
                with suppress(Exception):
                    _data = data.decode("utf-8").split("\x0d\x0a")
                    if _data[0][0] == "*":
                        _count = int(_data[0][1]) - 1
                        _data.pop(0)
                        if _data[0::2][0][0] == "$" and len(_data[1::2][0]) == int(
                            _data[0::2][0][1]
                        ):
                            return _count, _data[1::2][0]

                return 0, ""

            def parse_data(self, c, data):
                _data = data.decode("utf-8").split("\r\n")[3::]
                username, password = "", ""
                if c == 2:
                    _ = 0
                    if _data[0::2][_][0] == "$" and len(_data[1::2][_]) == int(_data[0::2][_][1]):
                        username = _data[1::2][_]
                    _ = 1
                    if _data[0::2][_][0] == "$" and len(_data[1::2][_]) == int(_data[0::2][_][1]):
                        password = _data[1::2][_]
                if c == 1:
                    _ = 0
                    if _data[0::2][_][0] == "$" and len(_data[1::2][_]) == int(_data[0::2][_][1]):
                        password = _data[1::2][_]
                if c == 2 or c == 1:
                    username = self.check_bytes(username)
                    password = self.check_bytes(password)
                    status = "failed"
                    if username == _q_s.username and password == _q_s.password:
                        username = _q_s.username
                        password = _q_s.password
                        status = "success"
                    _q_s.logs.info(
                        {
                            "server": "redis_server",
                            "action": "login",
                            "status": status,
                            "src_ip": self.transport.getPeer().host,
                            "src_port": self.transport.getPeer().port,
                            "dest_ip": _q_s.ip,
                            "dest_port": _q_s.port,
                            "username": username,
                            "password": password,
                        }
                    )

            def connectionMade(self):
                self._state = 1
                self._variables = {}
                _q_s.logs.info(
                    {
                        "server": "redis_server",
                        "action": "connection",
                        "src_ip": self.transport.getPeer().host,
                        "src_port": self.transport.getPeer().port,
                        "dest_ip": _q_s.ip,
                        "dest_port": _q_s.port,
                    }
                )

            def dataReceived(self, data):
                c, command = self.get_command(data)
                if command == "AUTH":
                    self.parse_data(c, data)
                    self.transport.write(b"-ERR invalid password\r\n")
                else:
                    self.transport.write(b'-ERR unknown command "{}"\r\n'.format(command))
                self.transport.loseConnection()

        factory = Factory()
        factory.protocol = CustomRedisProtocol
        reactor.listenTCP(port=self.port, factory=factory, interface=self.ip)
        reactor.run()

    def run_server(self, process=False, auto=False):
        status = "error"
        run = False
        if process:
            if auto and not self.auto_disabled:
                port = get_free_port()
                if port > 0:
                    self.port = port
                    run = True
            elif self.close_port() and self.kill_server():
                run = True

            if run:
                self.process = Popen(
                    [
                        "python3",
                        path.realpath(__file__),
                        "--custom",
                        "--ip",
                        str(self.ip),
                        "--port",
                        str(self.port),
                        "--username",
                        str(self.username),
                        "--password",
                        str(self.password),
                        "--options",
                        str(self.options),
                        "--config",
                        str(self.config),
                        "--uuid",
                        str(self.uuid),
                    ]
                )
                if self.process.poll() is None and check_if_server_is_running(self.uuid):
                    status = "success"

            self.logs.info(
                {
                    "server": "redis_server",
                    "action": "process",
                    "status": status,
                    "src_ip": self.ip,
                    "src_port": self.port,
                    "username": self.username,
                    "password": self.password,
                    "dest_ip": self.ip,
                    "dest_port": self.port,
                }
            )

            if status == "success":
                return True
            else:
                self.kill_server()
                return False
        else:
            self.redis_server_main()

    def close_port(self):
        ret = close_port_wrapper("redis_server", self.ip, self.port, self.logs)
        return ret

    def kill_server(self):
        ret = kill_server_wrapper("redis_server", self.uuid, self.process)
        return ret

    def test_server(self, ip=None, port=None, username=None, password=None):
        with suppress(Exception):
            from redis import StrictRedis

            _ip = ip or self.ip
            _port = port or self.port
            _username = username or self.username
            _password = password or self.password
            r = StrictRedis.from_url(f"redis://{_username}:{_password}@{_ip}:{_port}/1")
            for key in r.scan_iter("user:*"):
                pass


if __name__ == "__main__":
    parsed = server_arguments()
    if parsed.docker or parsed.aws or parsed.custom:
        qredisserver = QRedisServer(
            ip=parsed.ip,
            port=parsed.port,
            username=parsed.username,
            password=parsed.password,
            options=parsed.options,
            config=parsed.config,
        )
        qredisserver.run_server()
