OciServiceHandle.cs :  » 2.6.4-mono-.net-core » System.Data » System » Data » OracleClient » Oci » C# / CSharp Open Source

// 
// OciServiceHandle.cs 
//  
// Part of managed C#/.NET library System.Data.OracleClient.dll
//
// Part of the Mono class libraries at
// mcs/class/System.Data.OracleClient/System.Data.OracleClient.Oci
//
// Assembly: System.Data.OracleClient.dll
// Namespace: System.Data.OracleClient.Oci
// 
// Author: 
//     Tim Coleman <tim@timcoleman.com>
//     Daniel Morgan <monodanmorg@yahoo.com>
//         
// Copyright (C) Tim Coleman, 2003
// Copyright (C) Daniel Morgan, 2009
// 

//#define ORACLE_DATA_ACCESS

using System;
using System.Runtime.InteropServices;

namespace System.Data.OracleClient.Oci{
  internal sealed class OciServiceHandle : OciHandle
  {
    #region Fields

    bool disposed = false;
    OciSessionHandle session;
    OciServerHandle server;

    OciErrorHandle errorHandle;

#if ORACLE_DATA_ACCESS
    static readonly uint OCI_AUTH = 8;
#endif

    #endregion // Fields

    #region Constructors

    public OciServiceHandle (OciHandle parent, IntPtr handle)
      : base (OciHandleType.Service, parent, handle)
    {
    }

    #endregion // Constructors

    #region Properties

    public OciErrorHandle ErrorHandle {
      get { return errorHandle; }
      set { errorHandle = value; }
    }

    #endregion // Properties

    #region Methods

    protected override void Dispose (bool disposing)
    {
      if (!disposed) {
        try {
          if (disposing) {
            //if (server != null)
            //  server.Dispose ();
            //if (session != null)
            //  session.Dispose ();
          }
          disposed = true;
        } finally {
          base.Dispose (disposing);
        }
      }
    }

    public bool SetServer (OciServerHandle handle)
    {
      server = handle;
      int status = OciCalls.OCIAttrSet (this,
              HandleType,
              server,
              0,
              OciAttributeType.Server,
              ErrorHandle);
      return (status == 0);
    }

    public bool SetSession (OciSessionHandle handle)
    {
      session = handle;
      int status = OciCalls.OCIAttrSet (this,
              HandleType,
              session,
              0,
              OciAttributeType.Session,
              ErrorHandle);
      return (status == 0);
    }

#if ORACLE_DATA_ACCESS
    byte[] UnicodeToCharSet (string s)
    {
      int rsize = 0;
      byte [] buffer;
      
      // Get size of buffer
      OciCalls.OCIUnicodeToCharSet (Parent, null, s, out rsize);
      
      // Fill buffer
      buffer = new byte[rsize];
      OciCalls.OCIUnicodeToCharSet (Parent, buffer, s, out rsize);

      return buffer;
    }

    internal bool ChangePassword (string new_password, OciErrorHandle error) 
    {      
      if (!session.SetCredentialAttributes (error))
        return false;

      byte[] ub = UnicodeToCharSet (session.Username
      byte[] opb = UnicodeToCharSet (session.Password);
      byte[] npb = UnicodeToCharSet (new_password);

      int status = OciCalls.OCIPasswordChange (this, error, ub, ub.Length, opb, opb.Length, npb, npb.Length, OCI_AUTH);
      
      if (status == 0) {
        session.Password = new_password;
        return true;
      }
        
      return false;
    }
#endif

    #endregion // Methods
  }
}