refactro: firstconnect with key instead of password

src/remote-container.ts

@@ -2,19 +2,19 @@ import * as fs from 'fs';
 import * as path from 'path';
 import * as os from 'os';
 import * as vscode from 'vscode';
+import * as rd from 'readline'
 const { NodeSSH } = require('node-ssh')
+
 import * as utils from './utils';
 
 export default class RemoteContainer {
 
-  async firstConnect(host: string, username: string, password: string, port: number): Promise<string> {
-    return new Promise(async (resolve, reject) => {
-      // connect the host and add the public key to the remote authorized_keys
-      const defaultPublicKeyPath = path.join(os.homedir(), '.ssh', 'id_rsa.pub');
-      // TODO: if there is no public key, generate one
-      const publicKey = fs.readFileSync(defaultPublicKeyPath, 'utf8');
+  async firstConnect(host: string, username: string, port: number): Promise<string>; // connect with key
+  // deprecated
+  async firstConnect(host: string, username: string, port: number, password: string): Promise<string>; 
 
-      // first connect to the remote host using password
+  async firstConnect(host: string, username: string, port: number, password?: string): Promise<string> {
+    return new Promise(async (resolve, reject) => {
       const ssh = new NodeSSH();
       vscode.window.withProgress({
           location: vscode.ProgressLocation.Notification,
@@ -22,6 +22,40 @@ export default class RemoteContainer {
           cancellable: false
       }, async (progress) => {
       try {
+
+        if (password === undefined) {
+          // connect with key
+          await ssh.connect({
+            host: host,
+            username: username,
+            port: port,
+            privateKey: utils.getDefaultPrivateKey()
+          });
+          progress.report({ message: "连接成功，开始安装" });
+
+          // install vscode-server and devstar extension
+          const vscodeCommitId = await utils.getVsCodeCommitId();
+          const vscodeServerUrl = `https://vscode.download.prss.microsoft.com/dbazure/download/stable/${vscodeCommitId}/vscode-server-linux-x64.tar.gz`
+          const installVscodeServerScript = `
+          mkdir -p ~/.vscode-server/bin/${vscodeCommitId} && \\
+          if [ "$(ls -A ~/.vscode-server/bin/${vscodeCommitId})" ]; then
+              ~/.vscode-server/bin/${vscodeCommitId}/bin/code-server --install-extension mengning.devstar
+          else
+              wget ${vscodeServerUrl} -O vscode-server-linux-x64.tar.gz && \\
+              mv vscode-server-linux-x64.tar.gz ~/.vscode-server/bin/${vscodeCommitId} && \\
+              cd ~/.vscode-server/bin/${vscodeCommitId} && \\
+              tar -xvzf vscode-server-linux-x64.tar.gz --strip-components 1 && \\
+              rm vscode-server-linux-x64.tar.gz && \\
+              ~/.vscode-server/bin/${vscodeCommitId}/bin/code-server --install-extension mengning.devstar
+          fi
+          `;
+          await ssh.execCommand(installVscodeServerScript);
+          console.log("vscode-server and extension installed");
+          vscode.window.showInformationMessage('安装完成！');
+
+          await ssh.dispose();
+        } else {
+          // connect with password (deprecate in future)
           await ssh.connect({
             host: host,
             username: username,
@@ -51,27 +85,58 @@ export default class RemoteContainer {
           vscode.window.showInformationMessage('安装完成！');
 
           // add the public key to the remote authorized_keys
+          if (!utils.existDefaultPublicKey() || !utils.existDefaultPrivateKey()) {
+            // if there is no public key, generate one
+            utils.createSSHKey()
+          }
+
+          const publicKey = utils.getDefaultPublicKey();
           await ssh.execCommand(`mkdir -p ~/.ssh && echo '${publicKey}' >> ~/.ssh/authorized_keys`);
           console.log('Public key added to remote authorized_keys');
 
           await ssh.dispose();
+        }
+
+      } catch (error) {
+        console.error('Failed to install vscode-server and extension: ', error);
+        await ssh.dispose();
+        reject(error);
+      }
 
       // only connect successfully then save the host info
-        // TODO: request change password
-        // TODO: use remote.SSH.configFile
       const sshConfigPath = path.join(os.homedir(), '.ssh', 'config');
-        // append the host to the local ssh config file 
-        const sshConfigContent =
+      // check if the host and related info exist in local ssh config file before saving
+      var canAppendSSHConfig = true
+      if (fs.existsSync(sshConfigPath)) {
+        var hasHost = false;
+        var hasPort = false;
+        var reader = rd.createInterface(fs.createReadStream(sshConfigPath))
+        reader.on("line", (l:string) => {
+          if (l.includes(`HostName ${host}`)) {
+            hasHost = true
+          }
+
+          if (l.includes(`Port ${port}`)) {
+            hasPort = true
+          }
+        })
+
+        if (hasHost && hasPort) {
+          // the container ssh info exists
+          canAppendSSHConfig = false
+        }
+      }
+
+      if (canAppendSSHConfig) {
+        // save the host to the local ssh config file 
+        const newSShConfigContent =
           `\nHost ${host}\n  HostName ${host}\n  Port ${port}\n  User ${username}\n  PreferredAuthentications publickey\n  IdentityFile ~/.ssh/id_rsa\n  `;
-        // append the host to the local ssh config file
-        fs.writeFileSync(sshConfigPath, sshConfigContent, { encoding: 'utf8', flag: 'a' });
+        fs.writeFileSync(sshConfigPath, newSShConfigContent, { encoding: 'utf8', flag: 'a' });
         console.log('Host registered in local ssh config');
+      }
+
       resolve("success");
-      } catch (error) {
-        console.error('Error adding public key: ', error);
-        await ssh.dispose();
-        reject("failed");
-      }});
+    });
     });
   }