Fix link reach/role and add ancestors link access info

CHANGELOG.md

@@ -37,6 +37,8 @@ and this project adheres to
 
 ## Added
 
+- ✨(backend) include ancestors accesses on document accesses list view #846
+- ✨(backend) add ancestors links reach and role to document API #846
 - 🚸(backend) make document search on title accent-insensitive #874
 - 🚩 add homepage feature flag #861
 - 📝(doc) update contributing policy (commit signatures are now mandatory) #895
@@ -48,12 +50,15 @@ and this project adheres to
 
 ## Changed
 
+- ♻️(backend) stop requiring owner for non-root documents #846
+- ♻️(backend) simplify roles by ranking them and return only the max role #846
 - ⚡️(frontend) reduce unblocking time for config #867
 - ♻️(frontend) bind UI with ability access #900
 - ♻️(frontend) use built-in Quote block #908
 
 ## Fixed
 
+- 🐛(backend) fix link definition select options linked to ancestors #846
 - 🐛(nginx) fix 404 when accessing a doc #866
 - 🔒️(drf) disable browsable HTML API renderer #919
 - 🔒(frontend) enhance file download security #889

src/backend/core/api/permissions.py

@@ -6,6 +6,7 @@
 
 from rest_framework import permissions
 
+from core import choices
 from core.models import DocumentAccess, RoleChoices, get_trashbin_cutoff
 
 ACTION_FOR_METHOD_TO_PERMISSION = {
@@ -96,26 +97,27 @@ def has_permission(self, request, view):
         ).exists()
 
 
-class AccessPermission(permissions.BasePermission):
-    """Permission class for access objects."""
+class ResourceWithAccessPermission(permissions.BasePermission):
+    """A permission class for templates."""
 
     def has_permission(self, request, view):
+        """check create permission for templates."""
         return request.user.is_authenticated or view.action != "create"
 
     def has_object_permission(self, request, view, obj):
         """Check permission for a given object."""
         abilities = obj.get_abilities(request.user)
         action = view.action
-        try:
-            action = ACTION_FOR_METHOD_TO_PERMISSION[view.action][request.method]
-        except KeyError:
-            pass
         return abilities.get(action, False)
 
 
-class DocumentAccessPermission(AccessPermission):
+class DocumentPermission(permissions.BasePermission):
     """Subclass to handle soft deletion specificities."""
 
+    def has_permission(self, request, view):
+        """check create permission for documents."""
+        return request.user.is_authenticated or view.action != "create"
+
     def has_object_permission(self, request, view, obj):
         """
         Return a 404 on deleted documents
@@ -127,10 +129,74 @@ def has_object_permission(self, request, view, obj):
         ) and deleted_at < get_trashbin_cutoff():
             raise Http404
 
-        # Compute permission first to ensure the "user_roles" attribute is set
-        has_permission = super().has_object_permission(request, view, obj)
+        abilities = obj.get_abilities(request.user)
+        action = view.action
+        try:
+            action = ACTION_FOR_METHOD_TO_PERMISSION[view.action][request.method]
+        except KeyError:
+            pass
+
+        has_permission = abilities.get(action, False)
 
         if obj.ancestors_deleted_at and not RoleChoices.OWNER in obj.user_roles:
             raise Http404
 
         return has_permission
+
+
+class DocumentAccessPermission(IsAuthenticated):
+    """Permission class for document access objects."""
+
+    def has_permission(self, request, view):
+        """check create permission for accesses in documents tree."""
+        if super().has_permission(request, view) is False:
+            return False
+
+        if view.action == "create":
+            role = view.document.get_role(request.user)
+            if role not in choices.PRIVILEGED_ROLES:
+                raise exceptions.PermissionDenied(
+                    "You are not allowed to manage accesses for this resource."
+                )
+
+        return True
+
+    def has_object_permission(self, request, view, obj):
+        """Check permission for a given object."""
+        abilities = obj.get_abilities(request.user)
+
+        requested_role = request.data.get("role")
+        if requested_role and requested_role not in abilities.get("set_role_to", []):
+            return False
+
+        action = view.action
+        return abilities.get(action, False)
+
+
+class TemplateAccessPermission(IsAuthenticated):
+    """Permission class for template access objects."""
+
+    def has_permission(self, request, view):
+        """check create permission for template accesses."""
+        if super().has_permission(request, view) is False:
+            return False
+
+        if view.action == "create":
+            roles = view.template.get_roles(request.user)
+            if not set(roles).intersection(set(choices.PRIVILEGED_ROLES)):
+                raise exceptions.PermissionDenied(
+                    "You are not allowed to manage accesses for this template."
+                )
+
+        return True
+
+    def has_object_permission(self, request, view, obj):
+        """Check permission for a given object."""
+        abilities = obj.get_abilities(request.user)
+
+        requested_role = request.data.get("role")
+        if requested_role and requested_role not in abilities.get("set_role_to", []):
+            return False
+
+        action = view.action
+        return abilities.get(action, False)