add new option to FileManager component to anonymize filenames during upload

Oqtane.Client/Modules/Controls/FileManager.razor

@@ -157,6 +157,9 @@
     [Parameter]
     public bool UploadMultiple { get; set; } = false; // optional - enable multiple file uploads - default false
 
+    [Parameter]
+    public bool AnonymizeUploadFilenames { get; set; } = false; // optional - indicate if file names should be anonymized on upload - default false
+
     [Parameter]
     public int ChunkSize { get; set; } = 1; // optional - size of file chunks to upload in MB
 
@@ -408,7 +411,7 @@
                     }
 
                     // upload files
-                    var success = await interop.UploadFiles(posturl, folder, _guid, SiteState.AntiForgeryToken, jwt, chunksize, tokenSource.Token);
+                    var success = await interop.UploadFiles(posturl, folder, _guid, SiteState.AntiForgeryToken, jwt, chunksize, AnonymizeUploadFilenames, tokenSource.Token);
 
                     // reset progress indicators
                     if (ShowProgress)

Oqtane.Client/UI/Interop.cs

@@ -224,17 +224,17 @@ namespace Oqtane.UI
 
         public Task UploadFiles(string posturl, string folder, string id, string antiforgerytoken, string jwt)
         {
-            UploadFiles(posturl, folder, id, antiforgerytoken, jwt, 1);
+            UploadFiles(posturl, folder, id, antiforgerytoken, jwt, 1, false);
             return Task.CompletedTask;
         }
 
-        public ValueTask<bool> UploadFiles(string posturl, string folder, string id, string antiforgerytoken, string jwt, int chunksize, CancellationToken cancellationToken = default)
+        public ValueTask<bool> UploadFiles(string posturl, string folder, string id, string antiforgerytoken, string jwt, int chunksize, bool anonymizeuploadfilenames, CancellationToken cancellationToken = default)
         {
             try
             {
                 return _jsRuntime.InvokeAsync<bool>(
                     "Oqtane.Interop.uploadFiles", cancellationToken,
-                    posturl, folder, id, antiforgerytoken, jwt, chunksize);
+                    posturl, folder, id, antiforgerytoken, jwt, chunksize, anonymizeuploadfilenames);
             }
             catch
             {

Oqtane.Server/Controllers/FileController.cs

@@ -444,9 +444,14 @@ namespace Oqtane.Controllers
             }
 
             // ensure filename is valid
-            if (!formfile.FileName.IsPathOrFileValid() || !HasValidFileExtension(formfile.FileName))
+            string fileName = formfile.FileName;
+            if (Path.GetExtension(fileName).Contains(':'))
             {
-                _logger.Log(LogLevel.Error, this, LogFunction.Security, "File Upload File Name Is Invalid Or Contains Invalid Extension {File}", formfile.FileName);
+                fileName = fileName.Substring(0, fileName.LastIndexOf(':')); // remove invalid suffix from extension
+            }
+            if (!fileName.IsPathOrFileValid() || !HasValidFileExtension(fileName))
+            {
+                _logger.Log(LogLevel.Error, this, LogFunction.Security, "File Upload File Name Is Invalid Or Contains Invalid Extension {File}", fileName);
                 return StatusCode((int)HttpStatusCode.Forbidden);
             }
 
@@ -458,8 +463,8 @@ namespace Oqtane.Controllers
                 return StatusCode((int)HttpStatusCode.Forbidden);
             }
 
-            // create file name using header values
-            string fileName = formfile.FileName + ".part_" + partCount.ToString("000") + "_" + totalParts.ToString("000");
+            // create file name using header part values
+            fileName += ".part_" + partCount.ToString("000") + "_" + totalParts.ToString("000");
             string folderPath = "";
 
             try
@@ -532,13 +537,13 @@ namespace Oqtane.Controllers
             string parts = Path.GetExtension(filename)?.Replace(token, ""); // returns "001_999"
             int totalparts = int.Parse(parts?.Substring(parts.IndexOf("_") + 1));
 
-            filename = Path.GetFileNameWithoutExtension(filename); // base filename
+            filename = Path.GetFileNameWithoutExtension(filename); // base filename including original file extension
             string[] fileparts = Directory.GetFiles(folder, filename + token + "*"); // list of all file parts
 
             // if all of the file parts exist (note that file parts can arrive out of order)
             if (fileparts.Length == totalparts && CanAccessFiles(fileparts))
             {
-                // merge file parts into temp file (in case another user is trying to get the file)
+                // merge file parts into temp file (in case another user is trying to read the file)
                 bool success = true;
                 using (var stream = new FileStream(Path.Combine(folder, filename + ".tmp"), FileMode.Create))
                 {
@@ -559,25 +564,22 @@ namespace Oqtane.Controllers
                 }
 
                 // clean up file parts
-                foreach (var file in Directory.GetFiles(folder, "*" + token + "*"))
+                foreach (var file in fileparts)
                 {
-                    if (fileparts.Contains(file))
+                    try
                     {
-                        try
-                        {
-                            System.IO.File.Delete(file);
-                        }
-                        catch
-                        {
-                            // unable to delete part - ignore
-                        }
+                        System.IO.File.Delete(file);
+                    }
+                    catch
+                    {
+                        // unable to delete part - ignore
                     }
                 }
 
                 // rename temp file
                 if (success)
                 {
-                    // remove file if it already exists (as well as any thumbnails which may exist)
+                    // remove existing file (as well as any thumbnails)
                     foreach (var file in Directory.GetFiles(folder, Path.GetFileNameWithoutExtension(filename) + ".*"))
                     {
                         if (Path.GetExtension(file) != ".tmp")

Oqtane.Server/wwwroot/js/interop.js

@@ -311,7 +311,7 @@ Oqtane.Interop = {
         }
         return files;
     },
-    uploadFiles: async function (posturl, folder, id, antiforgerytoken, jwt, chunksize) {
+    uploadFiles: async function (posturl, folder, id, antiforgerytoken, jwt, chunksize, anonymizeuploadfilenames) {
         var success = true;
         var fileinput = document.getElementById('FileInput_' + id);
         var progressinfo = document.getElementById('ProgressInfo_' + id);
@@ -344,16 +344,22 @@ Oqtane.Interop = {
             const totalParts = Math.ceil(file.size / chunkSize);
             let partCount = 0;
 
+            let filename = file.name;
+            if (anonymizeuploadfilenames) {
+                filename = crypto.randomUUID() + '.' + filename.split('.').pop();
+            }
+
             const uploadPart = () => {
                 const start = partCount * chunkSize;
                 const end = Math.min(start + chunkSize, file.size);
                 const chunk = file.slice(start, end);
 
                 return new Promise((resolve, reject) => {
+
                     let formdata = new FormData();
                     formdata.append('__RequestVerificationToken', antiforgerytoken);
                     formdata.append('folder', folder);
-                    formdata.append('formfile', chunk, file.name);
+                    formdata.append('formfile', chunk, filename);
 
                     var credentials = 'same-origin';
                     var headers = new Headers();