AuthenticationManager.cs

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//
// This program is free software; you can redistribute it and/or modify
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// published by the Free Software Foundation.
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using System;
using System.Collections.Generic;
using System.Reflection;

namespace MySql.Data.MySqlClient.Authentication
{
  internal partial class AuthenticationPluginManager
  {
    private static readonly Dictionary<string, PluginInfo> Plugins = new Dictionary<string, PluginInfo>();

    static partial void AuthenticationManagerCtorConfiguration();

    static AuthenticationPluginManager()
    {
      Plugins["mysql_native_password"] = new PluginInfo("MySql.Data.MySqlClient.Authentication.MySqlNativePasswordPlugin");
      Plugins["sha256_password"] = new PluginInfo("MySql.Data.MySqlClient.Authentication.Sha256AuthenticationPlugin");
      Plugins["authentication_windows_client"] = new PluginInfo("MySql.Data.MySqlClient.Authentication.MySqlWindowsAuthenticationPlugin");
      Plugins["caching_sha2_password"] = new PluginInfo("MySql.Data.MySqlClient.Authentication.CachingSha2AuthenticationPlugin");
      Plugins["authentication_ldap_sasl_client"] = new PluginInfo("MySql.Data.MySqlClient.Authentication.MySqlSASLPlugin");
      Plugins["mysql_clear_password"] = new PluginInfo("MySql.Data.MySqlClient.Authentication.MySqlClearPasswordPlugin");
      Plugins["authentication_kerberos_client"] = new PluginInfo("MySql.Data.MySqlClient.Authentication.KerberosAuthenticationPlugin");
      Plugins["authentication_oci_client"] = new PluginInfo("MySql.Data.MySqlClient.Authentication.OciAuthenticationPlugin");
      Plugins["authentication_fido_client"] = new PluginInfo("MySql.Data.MySqlClient.Authentication.FidoAuthenticationPlugin");

      AuthenticationManagerCtorConfiguration();
    }

    public static MySqlAuthenticationPlugin GetPlugin(string method)
    {
      ValidateAuthenticationPlugin(method);
      return CreatePlugin(method);
    }

    private static MySqlAuthenticationPlugin CreatePlugin(string method)
    {
      PluginInfo pi = Plugins[method];

      try
      {
        Type t = Type.GetType(pi.Type);
        MySqlAuthenticationPlugin o = (MySqlAuthenticationPlugin)Activator.CreateInstance(t);
        return o;
      }
      catch (Exception e)
      {
        throw new MySqlException(String.Format(Resources.UnableToCreateAuthPlugin, method), e);
      }
    }

    public static void ValidateAuthenticationPlugin(string method)
    {
      if (!Plugins.ContainsKey(method))
        throw new MySqlException(String.Format(Resources.AuthenticationMethodNotSupported, method));
    }
  }

  struct PluginInfo
  {
    public string Type;
    public Assembly Assembly;

    public PluginInfo(string type)
    {
      Type = type;
      Assembly = null;
    }
  }
}