Template permission fix (#7391)

* Update API permissions for report templates

- Allow reading for any authenticated user
- Write permissions for staff users

* Update unit tests

src/backend/InvenTree/InvenTree/unit_test.py

@@ -142,8 +142,16 @@ class UserMixin:
     def setUp(self):
         """Run setup for individual test methods."""
         if self.auto_login:
+            self.login()
+
+    def login(self):
+        """Login with the current user credentials."""
         self.client.login(username=self.username, password=self.password)
 
+    def logout(self):
+        """Lougout current user."""
+        self.client.logout()
+
     @classmethod
     def assignRole(cls, role=None, assign_all: bool = False, group=None):
         """Set the user roles for the registered user.

src/backend/InvenTree/report/api.py

@@ -18,6 +18,7 @@ from rest_framework.response import Response
 import common.models
 import InvenTree.exceptions
 import InvenTree.helpers
+import InvenTree.permissions
 import report.helpers
 import report.models
 import report.serializers
@@ -34,6 +35,16 @@ from plugin.builtin.labels.inventree_label import InvenTreeLabelPlugin
 from plugin.registry import registry
 
 
+class TemplatePermissionMixin:
+    """Permission mixin for report and label templates."""
+
+    # Read only for non-staff users
+    permission_classes = [
+        permissions.IsAuthenticated,
+        InvenTree.permissions.IsStaffOrReadOnly,
+    ]
+
+
 @method_decorator(cache_page(5), name='dispatch')
 class TemplatePrintBase(RetrieveAPI):
     """Base class for printing against templates."""
@@ -143,6 +154,7 @@ class LabelFilter(ReportFilterBase):
 class LabelPrint(GenericAPIView):
     """API endpoint for printing labels."""
 
+    # Any authenticated user can print labels
     permission_classes = [permissions.IsAuthenticated]
     serializer_class = report.serializers.LabelPrintSerializer
 
@@ -277,7 +289,7 @@ class LabelPrint(GenericAPIView):
         )
 
 
-class LabelTemplateList(ListCreateAPI):
+class LabelTemplateList(TemplatePermissionMixin, ListCreateAPI):
     """API endpoint for viewing list of LabelTemplate objects."""
 
     queryset = report.models.LabelTemplate.objects.all()
@@ -288,7 +300,7 @@ class LabelTemplateList(ListCreateAPI):
     ordering_fields = ['name', 'enabled']
 
 
-class LabelTemplateDetail(RetrieveUpdateDestroyAPI):
+class LabelTemplateDetail(TemplatePermissionMixin, RetrieveUpdateDestroyAPI):
     """Detail API endpoint for label template model."""
 
     queryset = report.models.LabelTemplate.objects.all()
@@ -298,6 +310,7 @@ class LabelTemplateDetail(RetrieveUpdateDestroyAPI):
 class ReportPrint(GenericAPIView):
     """API endpoint for printing reports."""
 
+    # Any authenticated user can print reports
     permission_classes = [permissions.IsAuthenticated]
     serializer_class = report.serializers.ReportPrintSerializer
 
@@ -434,7 +447,7 @@ class ReportPrint(GenericAPIView):
         )
 
 
-class ReportTemplateList(ListCreateAPI):
+class ReportTemplateList(TemplatePermissionMixin, ListCreateAPI):
     """API endpoint for viewing list of ReportTemplate objects."""
 
     queryset = report.models.ReportTemplate.objects.all()
@@ -445,49 +458,49 @@ class ReportTemplateList(ListCreateAPI):
     ordering_fields = ['name', 'enabled']
 
 
-class ReportTemplateDetail(RetrieveUpdateDestroyAPI):
+class ReportTemplateDetail(TemplatePermissionMixin, RetrieveUpdateDestroyAPI):
     """Detail API endpoint for report template model."""
 
     queryset = report.models.ReportTemplate.objects.all()
     serializer_class = report.serializers.ReportTemplateSerializer
 
 
-class ReportSnippetList(ListCreateAPI):
+class ReportSnippetList(TemplatePermissionMixin, ListCreateAPI):
     """API endpoint for listing ReportSnippet objects."""
 
     queryset = report.models.ReportSnippet.objects.all()
     serializer_class = report.serializers.ReportSnippetSerializer
 
 
-class ReportSnippetDetail(RetrieveUpdateDestroyAPI):
+class ReportSnippetDetail(TemplatePermissionMixin, RetrieveUpdateDestroyAPI):
     """API endpoint for a single ReportSnippet object."""
 
     queryset = report.models.ReportSnippet.objects.all()
     serializer_class = report.serializers.ReportSnippetSerializer
 
 
-class ReportAssetList(ListCreateAPI):
+class ReportAssetList(TemplatePermissionMixin, ListCreateAPI):
     """API endpoint for listing ReportAsset objects."""
 
     queryset = report.models.ReportAsset.objects.all()
     serializer_class = report.serializers.ReportAssetSerializer
 
 
-class ReportAssetDetail(RetrieveUpdateDestroyAPI):
+class ReportAssetDetail(TemplatePermissionMixin, RetrieveUpdateDestroyAPI):
     """API endpoint for a single ReportAsset object."""
 
     queryset = report.models.ReportAsset.objects.all()
     serializer_class = report.serializers.ReportAssetSerializer
 
 
-class LabelOutputList(BulkDeleteMixin, ListAPI):
+class LabelOutputList(TemplatePermissionMixin, BulkDeleteMixin, ListAPI):
     """List endpoint for LabelOutput objects."""
 
     queryset = report.models.LabelOutput.objects.all()
     serializer_class = report.serializers.LabelOutputSerializer
 
 
-class ReportOutputList(BulkDeleteMixin, ListAPI):
+class ReportOutputList(TemplatePermissionMixin, BulkDeleteMixin, ListAPI):
     """List endpoint for ReportOutput objects."""
 
     queryset = report.models.ReportOutput.objects.all()

src/backend/InvenTree/report/tests.py

@@ -403,6 +403,61 @@ class ReportTest(InvenTreeAPITestCase):
 
         self.assertEqual(len(p.metadata.keys()), 4)
 
+    def test_report_template_permissions(self):
+        """Test that the user permissions are correctly applied.
+
+        - For all /api/report/ endpoints, any authenticated user should have full read access
+        - Write access is limited to staff users
+        - Non authenticated users should have no access at all
+        """
+        # First test the "report list" endpoint
+        url = reverse('api-report-template-list')
+
+        template = ReportTemplate.objects.first()
+
+        detail_url = reverse('api-report-template-detail', kwargs={'pk': template.pk})
+
+        # Non-authenticated user should have no access
+        self.logout()
+
+        self.get(url, expected_code=401)
+
+        # Authenticated user should have read access
+        self.user.is_staff = False
+        self.user.save()
+
+        self.login()
+
+        # Check read access to template list URL
+        self.get(url, expected_code=200)
+
+        # Check read access to template detail URL
+        self.get(detail_url, expected_code=200)
+
+        # An update to the report template should fail
+        self.patch(
+            detail_url,
+            data={'description': 'Some new description here?'},
+            expected_code=403,
+        )
+
+        # Now, test with a staff user
+        self.logout()
+
+        self.user.is_staff = True
+        self.user.save()
+
+        self.login()
+
+        self.patch(
+            detail_url,
+            data={'description': 'An updated description'},
+            expected_code=200,
+        )
+
+        template.refresh_from_db()
+        self.assertEqual(template.description, 'An updated description')
+
 
 class PrintTestMixins:
     """Mixin that enables e2e printing tests."""