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package org.postgresql.sspi;

import com.sun.jna.LastErrorException;
import com.sun.jna.Library;
import com.sun.jna.Native;
import com.sun.jna.Platform;
import com.sun.jna.WString;
import com.sun.jna.ptr.IntByReference;
import com.sun.jna.ptr.PointerByReference;
import com.sun.jna.win32.StdCallLibrary;

interface NTDSAPI extends StdCallLibrary {

    NTDSAPI instance = (NTDSAPI)
            Native.loadLibrary("NTDSAPI", NTDSAPI.class);
    
    /**
     * Wrap DsMakeSpn
     * 
     * To get the String result, call
     * 
     *      * new String(buf, 0, spnLength)
     * 
     * 
     * on the byte[] buffer passed to 'spn' after testing to ensure ERROR_SUCCESS.
     * 
     * @see http://msdn.microsoft.com/en-us/library/ms676007(v=vs.85).aspx
     * 
     * @param serviceClass SPN service class (in)
     * @param serviceName SPN service name (in)
     * @param instanceName SPN instance name (in, null ok)
     * @param instancePort SPN port number (in, 0 to omit)
     * @param referrer SPN referer (in, null ok)
     * @param spnLength Size of 'spn' buffer (in), actul length of spn created including null terminator (out)
     * @param spn SPN buffer (in/out)
     * @return Error code ERROR_SUCCESS, ERROR_BUFFER_OVERFLOW or ERROR_INVALID_PARAMETER
     */
    int DsMakeSpnW(
            WString serviceClass, /* in */
            WString serviceName, /* in */
            WString instanceName, /* in, optional, may be null */
            short instancePort, /* in */
            WString referrer, /* in, optional, may be null */
            IntByReference spnLength, /* in: length of buffer spn; out: chars written */
            char[] spn /* out string */
            )
        throws LastErrorException;
    
    public final int 
        ERROR_SUCCESS = 0,
        ERROR_INVALID_PARAMETER = 87,
        ERROR_BUFFER_OVERFLOW = 111;
    
}