couchdb.diff

diff --git a/src/couchdb/couch_server.erl b/src/couchdb/couch_server.erl
index 440af62..13734b3 100644
--- a/src/couchdb/couch_server.erl
+++ b/src/couchdb/couch_server.erl
@@ -93,7 +93,51 @@ maybe_add_sys_db_callbacks(DbName, Options) ->
             sys_db | Options
         ];
         _ ->
-            Options
+            case DbName of
+            "public_users" ->
+            F = fun(#doc{id = <<?DESIGN_DOC_PREFIX, _/binary>>} = Doc, _) ->
+                Doc;
+            (#doc{body = {Body}} = Doc, #db{user_ctx = UserCtx} = Db) ->
+                #user_ctx{name=Name} = UserCtx,
+                DocName = couch_util:get_value(<<"name">>, Body),
+                case (catch couch_db:check_is_admin(Db)) of
+                  ok ->
+                    Doc;
+                  _ when Name =:= DocName ->
+                    Doc;
+                  _ ->
+                    #doc{
+                      id = Id,
+                      revs = RevisionPath,
+                      atts = Atts,
+                      deleted = Deleted
+                    } = Doc,
+                    #doc{
+                      id = Id,
+                      revs = RevisionPath,
+                      atts = Atts,
+                      deleted = Deleted,
+                      body = {lists:filter(fun({Key, _}) ->
+                          (Key =/= <<"salt">>) and
+                          (Key =/= <<"password">>) and
+                          (Key =/= <<"password_sha">>) and
+                          (Key =/= <<"password_scheme">>) and
+                          (Key =/= <<"derived_Key">>) and
+                          (Key =/= <<"pbkdf2">>) and
+                          (Key =/= <<"iterations">>) and
+                          (Key =/= <<"bcrypt">>) and
+                          (Key =/= <<"x-csrf-token">>)
+                      end, Body)}
+                    }
+                end
+            end,
+            [
+                {after_doc_read, F},
+                Options
+            ];
+            _Else ->
+                Options
+            end
         end
     end.