fix(protal-web): 文件管理会因为sftp消息过长报500错误 (#957)

## 前提：在.bashrc文件中输入较长的欢迎语

![image](https://github.com/PKUHPC/SCOW/assets/74037789/c32f1d1c-e7ca-4954-b26b-c1caa51c0706)
##
之前：文件管理和交互式应用（只要涉及ssh连接的地方都有这个问题）因为使用sftp获取家目录，如果欢迎语过多，会导致sftp消息过长报500错误。

![image](https://github.com/PKUHPC/SCOW/assets/74037789/1fc54f28-bd54-476e-8dbb-a85b4d2aeea1)
## 现在：捕获了这个错误，并提示用户缩减欢迎语。

![image](https://github.com/PKUHPC/SCOW/assets/74037789/0ca3f6e3-f4ed-4c52-97ee-95c936431f52)

.changeset/khaki-rockets-switch.md

@@ -0,0 +1,6 @@
+---
+"@scow/portal-web": patch
+"@scow/lib-ssh": patch
+---
+
+sshConnect 时，提示语过长会使得连接失败，现在捕获了这个错误并提示用户

apps/portal-server/src/utils/ssh.ts

@@ -88,7 +88,7 @@ export async function sshConnect<T>(
         code: status.INTERNAL,
         details: e.message,
         message: e.message,
-        metadata: scowErrorMetadata(SSH_ERROR_CODE),
+        metadata: scowErrorMetadata(SSH_ERROR_CODE, typeof e.cause === "string" ? { cause:e.cause } : undefined),
       });
     }
 

apps/portal-web/src/i18n/en.ts

@@ -457,6 +457,8 @@ export default {
     _app: {
       sshError: "Unable to connect as a user to the login node. Please make sure the permissions "
       + "of your home directory are 700, 750, or 755.",
+      textExceedsLength:"There are too many welcome messages for terminal login."
+                         + "Please reduce unnecessary information output!",
       sftpError: "SFTP operation failed. Please confirm if you have the necessary permissions.",
       otherError: "Server encountered an error!",
     },

apps/portal-web/src/i18n/zh_cn.ts

@@ -455,8 +455,8 @@ export default {
       },
     },
     _app: {
+      textExceedsLength:"终端登录欢迎提示信息过多，请减少不必要的信息输出！",
       sshError:"无法以用户身份连接到登录节点。请确认您的家目录的权限为700、750或者755",
-
       sftpError:"SFTP操作失败，请确认您是否有操作的权限",
       otherError:"服务器出错啦！",
     },

apps/portal-web/src/pages/_app.tsx

@@ -59,11 +59,18 @@ const FailEventHandler: React.FC = () => {
         return;
       }
 
+      const regex = /exceeds max length/;
+      // 如果终端登录欢迎语过长会报错：Packet length xxxx exceeds max length of 262144
+      if (regex.test(e.data?.message)) {
+        message.error(t("pages._app.textExceedsLength"));
+        return;
+      }
+
       if (e.data?.code === "SSH_ERROR") {
         message.error(t("pages._app.sshError"));
         return;
       }
-
+      
       if (e.data?.code === "SFTP_ERROR") {
         message.error(e.data?.details.length > 150 ? e.data?.details.substring(0, 150) + "..." :
           e.data?.details || t("pages._app.sftpError"));

apps/portal-web/src/utils/route.ts

@@ -21,11 +21,13 @@ export const route: typeof typeboxRoute = (schema, handler) => {
         if (!(e.metadata instanceof Metadata)) { throw e; }
 
         const SCOW_ERROR = (e.metadata as Metadata).get("IS_SCOW_ERROR");
+        const SCOW_CAUSE = (e.metadata as Metadata).get("cause");
         if (SCOW_ERROR.length === 0) { throw e; }
 
         const code = e.metadata.get("SCOW_ERROR_CODE")[0].toString();
         const details = e.details;
-        return { 500: { code, details } } as any;
+        const message = SCOW_CAUSE[0];
+        return { 500: { code, details, message } } as any;
       });
     }
   });

libs/ssh/src/ssh.ts

@@ -93,7 +93,18 @@ export async function sshConnect<T>(
 ) {
   const ssh = await sshRawConnect(address, username, rootKeyPair, logger);
 
-  return run(ssh).finally(() => { ssh.dispose(); });
+  return run(ssh)
+    .catch((e) => {
+      // 若在run回调函数中有具体抛错，直接抛出
+      if (e.code !== undefined) {
+        throw e;
+      }
+      else {
+        logger.info("Running ssh failed.");
+        throw new SshConnectError({ cause: e.message });
+      }
+    })
+    .finally(() => { ssh.dispose(); });
 }
 
 export async function sshConnectByPassword<T>(