Function executeDig

dig/dig.ts:158–202

(args: string[])

    const hasAnyPlusOption = modifiedArgs.some((arg) => arg.startsWith("+"));
    const isSimpleQuery =
      !hasAnyPlusOption && !modifiedArgs.some((arg) => arg.startsWith("-"));

    if (isSimpleQuery) {
      modifiedArgs.push("+short");
    }

    // Use execFile to pass args as array — no shell interpolation
    const { stdout, stderr } = await execFilePromise("dig", modifiedArgs, { timeout: 20000 });

    if (stderr && !stdout) {
      throw new Error(`dig 命令执行失败: ${stderr}`);
    }

    const hasShortOutput = modifiedArgs.includes("+short");

    return {
      success: true,
      output: stdout.trim(),
      isShortOutput: hasShortOutput,
    };
  } catch (error: any) {
    console.error("Dig execution error:", error);

    if (
      error.message?.includes("not found") ||
      error.message?.includes("not recognized")
    ) {
      throw new Error(
        "系统未安装 dig 工具。请安装 bind-utils (Linux) 或 dnsutils (Ubuntu/Debian) 包。"
      );
    }

    throw new Error(`DNS 查询失败: ${error.message || error}`);
  }
}

async function formatShortDnsResults(
  output: string,
  args: string[]
): Promise<string> {
  if (!output || output.trim() === "") {
    return `❌ <b>解析失败</b>

无记录或查询失败`;
  }

  const lines = output.split("\n").filter((line) => line.trim() !== "");