chuanqi/cq2_sdk/scripts/decode_launch_resp.py

"""Decode the FULL EnterGameClient response (session 753) from the SAZ —
it may contain the launch URL that 996box passes to cq.exe."""
import gzip
import json
from pathlib import Path

import brotli


def decode_response(path: Path) -> str:
    raw = path.read_bytes()
    idx = raw.find(b"\r\n\r\n")
    head = raw[:idx].decode("latin1")
    body = raw[idx + 4 :]
    enc = "br" if "Content-Encoding: br" in head else ("gzip" if "gzip" in head else "")
    chunked = "chunked" in head
    if chunked:
        out = b""
        rest = body
        while rest:
            le = rest.find(b"\r\n")
            if le < 0:
                break
            try:
                sz = int(rest[:le].split(b";")[0], 16)
            except ValueError:
                break
            if sz == 0:
                break
            out += rest[le + 2 : le + 2 + sz]
            rest = rest[le + 2 + sz + 2 :]
        body = out
    if enc == "br":
        body = brotli.decompress(body)
    elif enc == "gzip":
        body = gzip.decompress(body)
    return body.decode("utf-8", errors="replace")


raw_dir = Path(r"C:\Users\ADMINI~1\AppData\Local\Temp\opencode\saz_dec\raw")
txt = decode_response(raw_dir / "753_s.txt")
print("=== EnterGameClient FULL response ===")
try:
    data = json.loads(txt)
    # dump ALL keys recursively, looking for url/launch fields
    def walk(obj, path=""):
        if isinstance(obj, dict):
            for k, v in obj.items():
                p = f"{path}.{k}" if path else k
                if isinstance(v, (dict, list)):
                    walk(v, p)
                else:
                    kl = k.lower()
                    if any(s in kl for s in ("url", "launch", "path", "exe", "start", "open")):
                        print(f"  *** {p} = {str(v)[:120]}")
                    elif isinstance(v, str) and len(v) < 80:
                        print(f"  {p} = {v}")
        elif isinstance(obj, list):
            for i, item in enumerate(obj[:3]):
                walk(item, f"{path}[{i}]")
    walk(data)
    print()
    print("download_info keys:", list((data.get("data", {}).get("download_info") or {}).keys()))
except json.JSONDecodeError:
    print(txt[:2000])