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JCIFS is an Open Source client library that implements the CIFS/SMB networking protocol in 100% Java
There is a newer version: 1.3.18.1
/* jcifs smb client library in Java
 * Copyright (C) 2000  "Michael B. Allen" 
 * 
 * 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.netbios;

import java.io.IOException;

public class NbtException extends IOException {

    // error classes
    public static final int SUCCESS = 0;
    public static final int ERR_NAM_SRVC = 0x01;
    public static final int ERR_SSN_SRVC = 0x02;

    // name service error codes
    public static final int FMT_ERR = 0x1;
    public static final int SRV_ERR = 0x2;
    public static final int IMP_ERR = 0x4;
    public static final int RFS_ERR = 0x5;
    public static final int ACT_ERR = 0x6;
    public static final int CFT_ERR = 0x7;

    // session service error codes
    public static final int CONNECTION_REFUSED    = -1; 
    public static final int NOT_LISTENING_CALLED  = 0x80;
    public static final int NOT_LISTENING_CALLING = 0x81;
    public static final int CALLED_NOT_PRESENT    = 0x82;
    public static final int NO_RESOURCES          = 0x83;
    public static final int UNSPECIFIED           = 0x8F;

    public int errorClass;
    public int errorCode;

    public static String getErrorString( int errorClass, int errorCode ) {
        String result = "";
        switch( errorClass ) {
            case SUCCESS:
                result += "SUCCESS";
                break;
            case ERR_NAM_SRVC:
                result += "ERR_NAM_SRVC/";
                switch( errorCode ) {
                    case FMT_ERR:
                        result += "FMT_ERR: Format Error";
                    default:
                        result += "Unknown error code: " + errorCode;
                }
                break;
            case ERR_SSN_SRVC:
                result += "ERR_SSN_SRVC/";
                switch( errorCode ) {
                    case CONNECTION_REFUSED:
                        result += "Connection refused";
                        break;
                    case NOT_LISTENING_CALLED:
                        result += "Not listening on called name";
                        break;
                    case NOT_LISTENING_CALLING:
                        result += "Not listening for calling name";
                        break;
                    case CALLED_NOT_PRESENT:
                        result += "Called name not present";
                        break;
                    case NO_RESOURCES:
                        result += "Called name present, but insufficient resources";
                        break;
                    case UNSPECIFIED:
                        result += "Unspecified error";
                        break;
                    default:
                        result += "Unknown error code: " + errorCode;
                }
                break;
            default:
                result += "unknown error class: " + errorClass;
        }
        return result;
    }

    public NbtException( int errorClass, int errorCode ) {
        super( getErrorString( errorClass, errorCode ));
        this.errorClass = errorClass;
        this.errorCode = errorCode;
    }
    public String toString() {
        return new String( "errorClass=" + errorClass + ",errorCode=" + errorCode + ",errorString=" + getErrorString( errorClass, errorCode ));
    }
}