content: /* jcifs smb client library in Java
   * Copyright (C) 2005  "Michael B. Allen" <jcifs at samba dot org>
   * 
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   * 
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   * 
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  package jcifs.internal.smb1.trans.nt;
  
  
  import jcifs.Configuration;
  import jcifs.internal.CommonServerMessageBlockRequest;
  import jcifs.internal.smb1.trans.SmbComTransaction;
  import jcifs.internal.util.SMBUtil;
  
  
  /**
   * 
   */
  public abstract class SmbComNtTransaction extends SmbComTransaction {
  
      // relative to headerStart
      private static final int NTT_PRIMARY_SETUP_OFFSET = 71;
      private static final int NTT_SECONDARY_PARAMETER_OFFSET = 51;
  
      /**
       * 
       */
      public static final int NT_TRANSACT_QUERY_SECURITY_DESC = 0x6;
  
      /**
       * 
       */
      public static final int NT_TRANSACT_NOTIFY_CHANGE = 0x4;
  
      private final int function;
  
  
      protected SmbComNtTransaction ( Configuration config, int function ) {
          super(config, SMB_COM_NT_TRANSACT, (byte) 0);
          this.function = function;
          this.primarySetupOffset = NTT_PRIMARY_SETUP_OFFSET;
          this.secondaryParameterOffset = NTT_SECONDARY_PARAMETER_OFFSET;
      }
  
  
      /**
       * 
       * @return a cancel request
       */
      @Override
      public CommonServerMessageBlockRequest createCancel () {
          return new SmbComNtCancel(getConfig(), (int) getMid());
      }
  
  
      @Override
      protected int writeParameterWordsWireFormat ( byte[] dst, int dstIndex ) {
          int start = dstIndex;
  
          if ( this.getCommand() != SMB_COM_NT_TRANSACT_SECONDARY ) {
              dst[ dstIndex++ ] = this.maxSetupCount;
          }
          else {
              dst[ dstIndex++ ] = (byte) 0x00; // Reserved
          }
          dst[ dstIndex++ ] = (byte) 0x00; // Reserved
          dst[ dstIndex++ ] = (byte) 0x00; // Reserved
          SMBUtil.writeInt4(this.totalParameterCount, dst, dstIndex);
          dstIndex += 4;
          SMBUtil.writeInt4(this.totalDataCount, dst, dstIndex);
          dstIndex += 4;
          if ( this.getCommand() != SMB_COM_NT_TRANSACT_SECONDARY ) {
              SMBUtil.writeInt4(this.maxParameterCount, dst, dstIndex);
              dstIndex += 4;
              SMBUtil.writeInt4(this.maxDataCount, dst, dstIndex);
              dstIndex += 4;
          }
          SMBUtil.writeInt4(this.parameterCount, dst, dstIndex);
          dstIndex += 4;
          SMBUtil.writeInt4( ( this.parameterCount == 0 ? 0 : this.parameterOffset ), dst, dstIndex);
          dstIndex += 4;
          if ( this.getCommand() == SMB_COM_NT_TRANSACT_SECONDARY ) {
              SMBUtil.writeInt4(this.parameterDisplacement, dst, dstIndex);
              dstIndex += 4;
          }
          SMBUtil.writeInt4(this.dataCount, dst, dstIndex);
          dstIndex += 4;
          SMBUtil.writeInt4( ( this.dataCount == 0 ? 0 : this.dataOffset ), dst, dstIndex);
          dstIndex += 4;
          if ( this.getCommand() == SMB_COM_NT_TRANSACT_SECONDARY ) {
              SMBUtil.writeInt4(this.dataDisplacement, dst, dstIndex);
              dstIndex += 4;
              dst[ dstIndex++ ] = (byte) 0x00; // Reserved1
          }
          else {
              dst[ dstIndex++ ] = (byte) this.setupCount;
              SMBUtil.writeInt2(this.function, dst, dstIndex);
              dstIndex += 2;
              dstIndex += writeSetupWireFormat(dst, dstIndex);
          }
  
          return dstIndex - start;
      }
  }
  