Question

我的目标是允许从沙盒Lua环境访问SQLite。但是在下面的示例中，仍然可以使用attach database（可能还有更多不需要的操作）。有没有办法在预定义的SQLite文件的沙盒环境中运行SQLite查询

SQLiteConnection.CreateFile("MyDatabase.sqlite");

SQLiteConnection m_dbConnection = new SQLiteConnection("Data Source=MyDatabase.sqlite;Version=3;");

m_dbConnection.Flags = SQLiteConnectionFlags.Default | SQLiteConnectionFlags.NoBindFunctions |
                        SQLiteConnectionFlags.NoConnectionPool | SQLiteConnectionFlags.NoCreateModule |
                        SQLiteConnectionFlags.NoLoadExtension | SQLiteConnectionFlags.NoExtensionFunctions;

m_dbConnection.Open();

string sql = "attach database 'contacts.db' as contacts;";

SQLiteCommand command = new SQLiteCommand(sql, m_dbConnection);

command.ExecuteNonQuery();

m_dbConnection.Close();

Answer 1

如果您创建了连接，SQLiteConnection会发生Authorize事件，您可以使用该事件阻止数据库附加：

SQLiteConnection conn = new SQLiteConnection("Data Source=:memory:");
conn.Authorize += Conn_Authorize;

...

private static void Conn_Authorize(object sender, AuthorizerEventArgs e)
{
    if (e.ActionCode == SQLiteAuthorizerActionCode.Attach)
    {
        e.ReturnCode = SQLiteAuthorizerReturnCode.Deny;
    }
    else
    {
        e.ReturnCode = SQLiteAuthorizerReturnCode.Ok;
    }
}

在沙盒环境中运行SQLite

1 个答案: