Chore/Remove Deprecated File Path Unstructured (FlowiseAI#5478)

* Refactor UnstructuredFile and UnstructuredFolder loaders to remove deprecated file path handling and enhance folder path validation. Ensure folder paths are sanitized and validated against path traversal attacks.

* Update UnstructuredFolder.ts

Author: HenryHengZJ

packages/components/nodes/documentloaders/Unstructured/UnstructuredFile.ts

@@ -4,15 +4,11 @@ import {
     UnstructuredLoaderOptions,
     UnstructuredLoaderStrategy,
     SkipInferTableTypes,
-    HiResModelName,
-    UnstructuredLoader as LCUnstructuredLoader
+    HiResModelName
 } from '@langchain/community/document_loaders/fs/unstructured'
 import { getCredentialData, getCredentialParam, handleEscapeCharacters } from '../../../src/utils'
 import { getFileFromStorage, INodeOutputsValue } from '../../../src'
 import { UnstructuredLoader } from './Unstructured'
-import { isPathTraversal, isUnsafeFilePath } from '../../../src/validator'
-import sanitize from 'sanitize-filename'
-import path from 'path'
 
 class UnstructuredFile_DocumentLoaders implements INode {
     label: string
@@ -44,17 +40,6 @@ class UnstructuredFile_DocumentLoaders implements INode {
             optional: true
         }
         this.inputs = [
-            /** Deprecated
-            {
-                label: 'File Path',
-                name: 'filePath',
-                type: 'string',
-                placeholder: '',
-                optional: true,
-                warning:
-                    'Use the File Upload instead of File path. If file is uploaded, this path is ignored. Path will be deprecated in future releases.'
-            },
-             */
             {
                 label: 'Files Upload',
                 name: 'fileObject',
@@ -455,7 +440,6 @@ class UnstructuredFile_DocumentLoaders implements INode {
     }
 
     async init(nodeData: INodeData, _: string, options: ICommonObject): Promise<any> {
-        const filePath = nodeData.inputs?.filePath as string
         const unstructuredAPIUrl = nodeData.inputs?.unstructuredAPIUrl as string
         const strategy = nodeData.inputs?.strategy as UnstructuredLoaderStrategy
         const encoding = nodeData.inputs?.encoding as string
@@ -560,37 +544,8 @@ class UnstructuredFile_DocumentLoaders implements INode {
                     docs.push(...loaderDocs)
                 }
             }
-        } else if (filePath) {
-            if (!filePath || typeof filePath !== 'string') {
-                throw new Error('Invalid file path format')
-            }
-
-            if (isPathTraversal(filePath) || isUnsafeFilePath(filePath)) {
-                throw new Error('Invalid path characters detected in filePath - path traversal not allowed')
-            }
-
-            const parsedPath = path.parse(filePath)
-            const sanitizedFilename = sanitize(parsedPath.base)
-
-            if (!sanitizedFilename || sanitizedFilename.trim() === '') {
-                throw new Error('Invalid filename after sanitization')
-            }
-
-            const sanitizedFilePath = path.join(parsedPath.dir, sanitizedFilename)
-
-            if (!path.isAbsolute(sanitizedFilePath)) {
-                throw new Error('File path must be absolute')
-            }
-
-            if (sanitizedFilePath.includes('..')) {
-                throw new Error('Invalid file path - directory traversal not allowed')
-            }
-
-            const loader = new LCUnstructuredLoader(sanitizedFilePath, obj)
-            const loaderDocs = await loader.load()
-            docs.push(...loaderDocs)
         } else {
-            throw new Error('File path or File upload is required')
+            throw new Error('File upload is required')
         }
 
         if (metadata) {