Sanataize PDF improvements (#3251)

# Description of Changes

Please provide a summary of the changes, including:

- Make distinction between metadata removal and XMP metadata removal
- Change file loaders to only edit metadata for certain ops

Closes #(issue_number)

---

## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md#6-testing)
for more details.

src/main/java/stirling/software/SPDF/controller/api/misc/MetadataController.java

@@ -86,7 +86,7 @@ public class MetadataController {
             allRequestParams = new java.util.HashMap<String, String>();
         }
         // Load the PDF file into a PDDocument
-        PDDocument document = pdfDocumentFactory.load(pdfFile);
+        PDDocument document = pdfDocumentFactory.load(pdfFile, true);
 
         // Get the document information from the PDF
         PDDocumentInformation info = document.getDocumentInformation();

src/main/java/stirling/software/SPDF/controller/api/security/SanitizeController.java

@@ -51,11 +51,12 @@ public class SanitizeController {
         MultipartFile inputFile = request.getFileInput();
         boolean removeJavaScript = request.isRemoveJavaScript();
         boolean removeEmbeddedFiles = request.isRemoveEmbeddedFiles();
+        boolean removeXMPMetadata = request.isRemoveXMPMetadata();
         boolean removeMetadata = request.isRemoveMetadata();
         boolean removeLinks = request.isRemoveLinks();
         boolean removeFonts = request.isRemoveFonts();
 
-        PDDocument document = pdfDocumentFactory.load(inputFile);
+        PDDocument document = pdfDocumentFactory.load(inputFile, true);
         if (removeJavaScript) {
             sanitizeJavaScript(document);
         }
@@ -64,10 +65,14 @@ public class SanitizeController {
             sanitizeEmbeddedFiles(document);
         }
 
-        if (removeMetadata) {
-            sanitizeMetadata(document);
+        if (removeXMPMetadata) {
+        	sanitizeXMPMetadata(document);
         }
 
+        if (removeMetadata) {
+        	sanitizeDocumentInfoMetadata(document);
+        }
+      
         if (removeLinks) {
             sanitizeLinks(document);
         }
@@ -145,7 +150,7 @@ public class SanitizeController {
         }
     }
 
-    private void sanitizeMetadata(PDDocument document) {
+    private void sanitizeXMPMetadata(PDDocument document) {
         if (document.getDocumentCatalog() != null) {
             PDMetadata metadata = document.getDocumentCatalog().getMetadata();
             if (metadata != null) {
@@ -153,6 +158,16 @@ public class SanitizeController {
             }
         }
     }
+    
+    private void sanitizeDocumentInfoMetadata(PDDocument document) {
+        PDDocumentInformation docInfo = document.getDocumentInformation();
+        if (docInfo != null) {
+            PDDocumentInformation newInfo = new PDDocumentInformation();
+            document.setDocumentInformation(newInfo);
+        }
+    }
+
+
 
     private void sanitizeLinks(PDDocument document) throws IOException {
         for (PDPage page : document.getPages()) {