增加ssh key操作service

back/services/sshKey.ts

@@ -0,0 +1,67 @@
+import { Service, Inject } from 'typedi';
+import winston from 'winston';
+import fs from 'fs';
+import os from 'os';
+import path from 'path';
+
+@Service()
+export default class SshKeyService {
+  private homedir = os.homedir();
+  private sshPath = path.resolve(this.homedir, '.ssh');
+  private sshConfigFilePath = path.resolve(this.homedir, '.ssh/config');
+
+  constructor(@Inject('logger') private logger: winston.Logger) {}
+
+  private generatePrivateKeyFile(alias: string, key: string): void {
+    try {
+      fs.writeFileSync(`${this.sshPath}/${alias}`, key, { encoding: 'utf8' });
+    } catch (error) {
+      this.logger.error('生成私钥文件失败', error);
+    }
+  }
+
+  private removePrivateKeyFile(alias: string): void {
+    try {
+      fs.unlinkSync(`${this.sshPath}/${alias}`);
+    } catch (error) {
+      this.logger.error('删除私钥文件失败', error);
+    }
+  }
+
+  private generateSingleSshConfig(alias: string, host: string): string {
+    return `\nHost ${alias}\n    Hostname ${host}\n    IdentityFile=${this.sshPath}/${alias}`;
+  }
+
+  private generateSshConfig(configs: string[]) {
+    try {
+      for (const config of configs) {
+        fs.appendFileSync(this.sshConfigFilePath, config, { encoding: 'utf8' });
+      }
+    } catch (error) {
+      this.logger.error('写入ssh配置文件失败', error);
+    }
+  }
+
+  private removeSshConfig(config: string) {
+    try {
+      fs.readFileSync(this.sshConfigFilePath, { encoding: 'utf8' }).replace(
+        config,
+        '',
+      );
+    } catch (error) {
+      this.logger.error(`删除ssh配置文件${config}失败`, error);
+    }
+  }
+
+  public addSSHKey(key: string, alias: string, host: string): void {
+    this.generatePrivateKeyFile(alias, key);
+    const config = this.generateSingleSshConfig(alias, host);
+    this.generateSshConfig([config]);
+  }
+
+  public removeSSHKey(alias: string, host: string): void {
+    this.removePrivateKeyFile(alias);
+    const config = this.generateSingleSshConfig(alias, host);
+    this.removeSshConfig(config);
+  }
+}