INNER CODE UNIT · Python

_read

ArcReel/ArcReel · server/app.py:716

    def _read() -> tuple[bool, str]:
        if not template_path.exists():
            return False, ""
        return True, template_path.read_text(encoding="utf-8")

    exists, template = await asyncio.to_thread(_read)
    if not exists:
        return PlainTextResponse("Agent 安装指引不存在", status_code=404)

    # 从请求推断 base URL；仅信任 x-forwarded-proto（反向代理标准头），
    # host 使用连接实际目标地址，不接受可被用户伪造的 x-forwarded-host。
    forwarded_proto = request.headers.get("x-forwarded-proto")
    scheme = forwarded_proto or request.url.scheme or "http"
    host = request.url.netloc
    base_url = f"{scheme}://{host}"

    content = template.replace("{{BASE_URL}}", base_url)
    return PlainTextResponse(content, media_type="text/markdown; charset=utf-8")

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