public static boolean isBlockEditable(final World world, final int x, final int y, final int z, final EntityPlayer player) {
        final MinecraftServer server = MinecraftServer.func_71276_C();
        if (server != null && !world.field_72995_K && server.func_96290_a(world, x, y, z, player)) {
            return false;
        }
        for (int i = 0; i < ComputerCraft.permissionProviders.size(); ++i) {
            final ITurtlePermissionProvider provider = ComputerCraft.permissionProviders.get(i);
            if (!provider.isBlockEditable(world, x, y, z)) {
                return false;
            }
        }
        return true;
    }

public static boolean isBlockEnterable(final World world, final int x, final int y, final int z, final EntityPlayer player) {
        final MinecraftServer server = MinecraftServer.func_71276_C();
        if (server != null && !world.field_72995_K && server.func_96290_a(world, x, y, z, player)) {
            return false;
        }
        for (int i = 0; i < ComputerCraft.permissionProviders.size(); ++i) {
            final ITurtlePermissionProvider provider = ComputerCraft.permissionProviders.get(i);
            if (!provider.isBlockEnterable(world, x, y, z)) {
                return false;
            }
        }
        return true;
    }