*/

public abstract class NtlmAuthenticator {

    private static NtlmAuthenticator auth;

    private String url;
    private SmbAuthException sae;

    private void reset() {
        url = null;
        sae = null;
    }

/**
Set the default <tt>NtlmAuthenticator</tt>. Once the default authenticator is set it cannot be changed. Calling this metho again will have no effect.
 */

		{"VADDPD.SAE.BCST X0, X1, X2", `can't combine rounding/SAE and broadcast`},
		{"VADDPD.BCST.SAE X0, X1, X2", `can't combine rounding/SAE and broadcast`},
		{"VADDPD.BCST.Z.SAE X0, X1, X2", `Z suffix should be the last; can't combine rounding/SAE and broadcast`},
		{"VADDPD.SAE.SAE X0, X1, X2", `duplicate suffix "SAE"`},
		{"VADDPD.RZ_SAE.SAE X0, X1, X2", `bad suffix combination`},

    }


    /**
     * @param a
     * @param url
     * @param sae
     * @return credentials returned by prompt
     */
    public static NtlmPasswordAuthenticator requestNtlmPasswordAuthentication ( NtlmAuthenticator a, String url, SmbAuthException sae ) {
        if ( a == null ) {
            return null;
        }
        synchronized ( a ) {
            a.url = url;
            a.sae = sae;

	VADDPD.RZ_SAE Y3, Y2, K1, Y1     // ERROR "unsupported rounding"
	VADDPD.RN_SAE Y3, Y2, K1, Y1     // ERROR "unsupported rounding"
	// Unsupported SAE.
	VMAXPD.SAE (AX), Z2, K1, Z1      // ERROR "illegal SAE with memory argument"
	VADDPD.SAE X3, X2, K1, X1        // ERROR "unsupported SAE"
	// Unsupported zeroing.
	VFPCLASSPDX.Z $0, (AX), K2, K1   // ERROR "unsupported zeroing"
	VFPCLASSPDY.Z $0, (AX), K2, K1   // ERROR "unsupported zeroing"

        this.openFlags = openFlags;
        this.access = (openFlags >>> 16) & 0xFFFF;
        if( append ) {
            try {
                fp = file.length();
            } catch( SmbAuthException sae ) {
                throw sae;
            } catch( SmbException se ) {
                fp = 0L;
            }
        }
        if( file instanceof SmbNamedPipe && file.unc.startsWith( "\\pipe\\" )) {

                ntlm = new NtlmPasswordAuthentication(domain, user, password);
            }
            try {
                SmbSession.logon(dc, ntlm);
            } catch (SmbAuthException sae) {
                response.setHeader("WWW-Authenticate", "NTLM");
                if (offerBasic) {
                    response.addHeader("WWW-Authenticate", "Basic realm=\"" +
                            realm + "\"");

            }
            try {
                getTransportContext().getTransportPool().logon(getTransportContext(), dc);
            }
            catch ( SmbAuthException sae ) {
                response.setHeader("WWW-Authenticate", "NTLM");
                if ( offerBasic ) {
                    response.addHeader("WWW-Authenticate", "Basic realm=\"" + this.realm + "\"");
                }