artemis/titles/diva/index.py

from twisted.web.http import Request
import yaml
import logging, coloredlogs
from logging.handlers import TimedRotatingFileHandler
import zlib
import json
import base64
from os import path
from typing import Tuple, Dict, List

from titles.diva.handlers.base import *
from core.config import CoreConfig
from core.title import BaseServlet
from core.utils import Utils
from .config import DivaConfig
from .const import DivaConstants
from .base import DivaBase


class DivaServlet(BaseServlet):
    def __init__(self, core_cfg: CoreConfig, cfg_dir: str) -> None:
        super().__init__(core_cfg, cfg_dir)
        self.game_cfg = DivaConfig()
        if path.exists(f"{cfg_dir}/{DivaConstants.CONFIG_NAME}"):
            self.game_cfg.update(
                yaml.safe_load(open(f"{cfg_dir}/{DivaConstants.CONFIG_NAME}"))
            )

        self.base = DivaBase(core_cfg, self.game_cfg)

        self.logger = logging.getLogger("diva")
        log_fmt_str = "[%(asctime)s] Diva | %(levelname)s | %(message)s"
        log_fmt = logging.Formatter(log_fmt_str)
        fileHandler = TimedRotatingFileHandler(
            "{0}/{1}.log".format(self.core_cfg.server.log_dir, "diva"),
            encoding="utf8",
            when="d",
            backupCount=10,
        )

        fileHandler.setFormatter(log_fmt)

        consoleHandler = logging.StreamHandler()
        consoleHandler.setFormatter(log_fmt)

        self.logger.addHandler(fileHandler)
        self.logger.addHandler(consoleHandler)

        self.logger.setLevel(self.game_cfg.server.loglevel)
        coloredlogs.install(
            level=self.game_cfg.server.loglevel, logger=self.logger, fmt=log_fmt_str
        )

    def get_endpoint_matchers(self) -> Tuple[List[Tuple[str, str, Dict]], List[Tuple[str, str, Dict]]]:
        return (
            [], 
            [("render_POST", "/DivaServlet/", {})]
        )
    
    def get_allnet_info(self, game_code: str, game_ver: int, keychip: str) -> Tuple[str, str]:
        if not self.core_cfg.server.is_using_proxy and Utils.get_title_port(self.core_cfg) != 80:
            return (f"http://{self.core_cfg.title.hostname}:{Utils.get_title_port(self.core_cfg)}/DivaServlet/", "")

        return (f"http://{self.core_cfg.title.hostname}/DivaServlet/", "")

    @classmethod
    def is_game_enabled(
        cls, game_code: str, core_cfg: CoreConfig, cfg_dir: str
    ) -> bool:
        game_cfg = DivaConfig()
        if path.exists(f"{cfg_dir}/{DivaConstants.CONFIG_NAME}"):
            game_cfg.update(
                yaml.safe_load(open(f"{cfg_dir}/{DivaConstants.CONFIG_NAME}"))
            )

        if not game_cfg.server.enable:
            return False

        return True

    def render_POST(self, request: Request, game_code: str, matchers: Dict) -> bytes:
        req_raw = request.content.getvalue()
        url_header = request.getAllHeaders()

        if "THIS_STRING_SEPARATES" in str(url_header):
            binary_request = req_raw.splitlines()
            binary_cmd_decoded = binary_request[3].decode("utf-8")
            url_data = binary_cmd_decoded # for logging
            req_cls = BaseBinaryRequest(binary_cmd_decoded)

        else:
            json_string = json.dumps(
                req_raw.decode("utf-8")
            )  # Take the response and decode as UTF-8 and dump
            b64string = json_string.replace(
                r"\n", "\n"
            )  # Remove all \n and separate them as new lines
            gz_string = base64.b64decode(b64string)  # Decompressing the base64 string

            try:
                url_data = zlib.decompress(gz_string)  # Decompressing the gzip
            except zlib.error as e:
                self.logger.error(f"Failed to defalte! {e} -> {gz_string}")
                return b"stat=0"

            try:
                req_cls = BaseRequest(url_data)
            except DivaRequestParseException as e:
                self.logger.error(e)
                return b"stat=0"

        self.logger.debug(f"Request: {url_data}\nHeaders: {url_header}")
        self.logger.info(
            f"{req_cls.cmd} request from {req_cls.kc_serial}/{req_cls.b_serial} at {Utils.get_ip_addr(request)}"
        )

        handler_str = f"handle_{req_cls.cmd}_request"

        if not hasattr(self.base, handler_str):
            self.logger.warn(f"Unhandled cmd {req_cls.cmd}")
            return BaseResponse(req_cls.cmd, req_cls.req_id).make().encode()

        handler = getattr(self.base, handler_str)

        response = handler(req_cls.raw)
        if response is None or response == "":
            response = BaseResponse(req_cls.cmd, req_cls.req_id).make()
        
        if not response.startswith("cmd="):
            response = f"cmd={req_cls.cmd}&req_id={req_cls.req_id}&stat=ok" + response
        
        self.logger.debug(f"Response: {response}")
        return response.encode(errors="ignore")