Feat: 新增Linux下依赖库自动安装

src/app.ts

@@ -53,6 +53,10 @@ import * as router from "./service/router";
 import * as koa from "./service/http";
 import * as protocol from "./service/protocol";
 import InstanceSubsystem from "./service/system_instance";
+import { initDependent } from "./service/install";
+
+// 异步初始化可选依赖库
+initDependent();
 
 // 初始化全局配置服务
 globalConfiguration.load();

src/service/install.ts

@@ -0,0 +1,86 @@
+/*
+  Copyright (C) 2022 Suwings <Suwings@outlook.com>
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU Affero General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+  
+  According to the AGPL, it is forbidden to delete all copyright notices, 
+  and if you modify the source code, you must open source the
+  modified source code.
+
+  版权所有 (C) 2022 Suwings <Suwings@outlook.com>
+
+  该程序是免费软件，您可以重新分发和/或修改据 GNU Affero 通用公共许可证的条款，
+  由自由软件基金会，许可证的第 3 版，或（由您选择）任何更高版本。
+
+  根据 AGPL 与用户协议，您必须保留所有版权声明，如果修改源代码则必须开源修改后的源代码。
+  可以前往 https://mcsmanager.com/ 阅读用户协议，申请闭源开发授权等。
+*/
+
+import os from "os";
+import fs from "fs-extra";
+import https from "https";
+import path from "path";
+import logger from "./log";
+import { Logger } from "log4js";
+
+const PTY_PATH = path.normalize(path.join(process.cwd(), "lib", "pty"));
+const PTY_DIR_PATH = path.join(process.cwd(), "lib");
+
+function installPtyForLinux(url: string) {
+  return new Promise<number>((resolve, reject) => {
+    // if (os.platform() !== "linux") resolve(-1);
+
+    if (!fs.existsSync(PTY_DIR_PATH)) fs.mkdirsSync(PTY_DIR_PATH);
+    if (fs.existsSync(PTY_PATH) && fs.statSync(PTY_PATH)?.size > 1024) {
+      logger.info("识别到可选依赖库安装，仿真终端功能已可用");
+      return resolve(1);
+    }
+    const file = fs.createWriteStream(PTY_PATH);
+    https.get(url, (res) => {
+      if (res.statusCode !== 200) {
+        return reject(new Error("code!=200"));
+      }
+      res.on("error", (err) => {
+        if (fs.existsSync(PTY_PATH)) fs.removeSync(PTY_PATH);
+        reject(err);
+      });
+      file
+        .on("finish", () => {
+          file.close();
+          resolve(0);
+        })
+        .on("error", (err) => {
+          reject(err);
+        });
+
+      res.pipe(file);
+    });
+  });
+}
+
+// 自动安装依赖库
+// 依赖程序基于 Go 语言开发，开源地址：https://github.com/MCSManager/pty
+export function initDependent() {
+  const ptyUrls = ["https://mcsmanager.com/download/pty_linux", "https://mcsmanager.oss-cn-guangzhou.aliyuncs.com/pty_linux"];
+  function setup(index = 0) {
+    installPtyForLinux(ptyUrls[index])
+      .then(() => {
+        logger.info("可选依赖程序已自动安装，仿真终端和部分高级功能已自动启用");
+        logger.info("依赖程序参考：https://github.com/mcsmanager/pty");
+      })
+      .catch((err) => {
+        fs.remove(PTY_PATH, () => {});
+        if (index === ptyUrls.length - 1) {
+          logger.warn(`安装可选依赖库失败，全仿真终端和部分可选功能将无法使用，不影响正常功能，将在下次启动时再尝试安装`);
+          logger.warn(err);
+          return;
+        }
+        return setup(index + 1);
+      });
+  }
+
+  setup(0);
+}