init version

mxpopstar

2022-05-03 e75ef5f04f61aa5fbd89fd5c413dcee1819b7a91

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package com.dev.ntm.cmd;
 
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.Random;
 
import com.Ecb_Aes;
 
public class NTM_ComBuf 
{
    NTM_Cmd m_CMD = new NTM_Cmd();
    
    public NTM_Cmd getNTMCmd()
    {
        return m_CMD;
    }
    
    public boolean putByteBuffer(final ByteBuffer bf)
    {
        if(false == m_CMD.putByteBuffer(bf))
            return false;
        
        return true;
    }
    
    public static ByteBuffer makeNTMCommBuf(int addr, short cmd, ByteBuffer bf_cmd, 
                                            ByteBuffer bf_inf, boolean aes_en)
    {
        NTM_Cmd m_CMD = new NTM_Cmd();
        
        int inf_len = 0;
        if(null != bf_inf) {
            inf_len = bf_inf.limit();
        }
        
        ByteBuffer buffer = ByteBuffer.allocate(m_CMD.BYTE_LEN + inf_len + 32);    //¶àÉèÖÃ32×Ö½Ú¿Õ¼ä
        buffer.order(ByteOrder.LITTLE_ENDIAN);            //ÉèÖÃByteBufferµÄ×Ö½ÚÐò
        
        m_CMD.makeCmd(addr, cmd, inf_len);
        buffer.put(m_CMD.getByteBuffer(bf_cmd, bf_inf));
        
        if(true == aes_en) {
            Random rd = new Random();
            if(0 == (buffer.position()%Ecb_Aes.AES_BLOCK_SIZE)) {
                for(int n=0; n<(Ecb_Aes.AES_BLOCK_SIZE/4); n++) {
                    buffer.putInt(rd.nextInt());
                }
            } else {
                int cnt = Ecb_Aes.AES_BLOCK_SIZE - (buffer.position()%Ecb_Aes.AES_BLOCK_SIZE);
                for(int n=0; n<cnt; n++) {
                    buffer.put((byte) rd.nextInt());
                }
            }
        }
        
        buffer.flip();
        
        return buffer;
    }
}
/***************************************************************************************
****************************** end of file (FBS_ComBuf) ********************************
***************************************************************************************/