Validate AWS IDs to ensure they match AWS account IDs, which should b…

…e 12-digit numerical values.

physionet-django/user/views.py

@@ -1,6 +1,7 @@
 import logging
 import os
 import pdb
+import re
 from datetime import datetime
 
 import django.contrib.auth.views as auth_views
@@ -904,6 +905,24 @@ def credential_reference_verification(request, application_slug, verification_to
     return render(request, 'user/credential_reference.html', {'form': form, 'application': application})
 
 
+def is_aws_valid(aws_id):
+    """
+    Validate an AWS ID.
+
+    Args:
+        aws_id (str): The AWS ID to be validated.
+
+    Returns:
+        bool: True if the AWS ID is valid, False otherwise.
+    """
+    aws_id_pattern = r"\b\d{12}\b"
+
+    if re.search(aws_id_pattern, aws_id):
+        return True
+    else:
+        return False
+
+
 @login_required
 def edit_cloud(request):
     """
@@ -915,8 +934,13 @@ def edit_cloud(request):
     if request.method == 'POST':
         form = forms.CloudForm(instance=cloud_info, data=request.POST)
         if form.is_valid():
-            form.save()
-            messages.success(request, 'Your cloud information has been saved.')
+            aws_id = form.cleaned_data.get('aws_id')
+            # Check if the AWS ID is valid or None
+            if aws_id is None or is_aws_valid(aws_id):
+                form.save()
+                messages.success(request, 'Your cloud information has been saved.')
+            else:
+                messages.error(request, 'Invalid AWS ID. Please provide a valid AWS ID.')
         else:
             messages.error(request, 'Invalid submission. See errors below.')