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back/services/log.ts

@@ -0,0 +1,14 @@
+import path from 'path';
+import { Inject, Service } from 'typedi';
+import winston from 'winston';
+import config from '../config';
+
+@Service()
+export default class LogService {
+  constructor(@Inject('logger') private logger: winston.Logger) {}
+
+  public checkFilePath(filePath: string, fileName: string) {
+    const finalPath = path.resolve(config.logPath, filePath, fileName);
+    return finalPath.startsWith(config.logPath) ? finalPath : '';
+  }
+}

back/services/script.ts

@@ -64,10 +64,15 @@ export default class ScriptService {
     return { code: 200 };
   }
 
-  public async getFile(filePath: string, fileName: string) {
+  public checkFilePath(filePath: string, fileName: string) {
     const finalPath = path.resolve(config.scriptPath, filePath, fileName);
+    return finalPath.startsWith(config.scriptPath) ? finalPath : '';
+  }
 
-    if (!finalPath.startsWith(config.scriptPath)) {
+  public async getFile(filePath: string, fileName: string) {
+    const finalPath = this.checkFilePath(filePath, fileName);
+
+    if (!finalPath) {
       return '';
     }