import jcifs.NameServiceClient;
import jcifs.SidResolver;
import jcifs.SmbPipeResource;
import jcifs.SmbResource;
import jcifs.SmbTransportPool;
import jcifs.smb.Handler;
import jcifs.smb.SmbFile;
import jcifs.smb.SmbNamedPipe;

/**
 * A wrapper implementation of CIFSContext that delegates to another context.
 * This class allows for context decoration and customization through delegation.
 *
 * @author mbechler
 */

import jcifs.smb.CredentialsInternal;
import jcifs.smb.DfsImpl;
import jcifs.smb.Handler;
import jcifs.smb.NtlmPasswordAuthenticator;
import jcifs.smb.SIDCacheImpl;
import jcifs.smb.SmbFile;
import jcifs.smb.SmbNamedPipe;
import jcifs.smb.SmbTransportPoolImpl;

/**
 * Base implementation of CIFS context providing core functionality for SMB operations.
 * This class serves as the foundation for context implementations in the jCIFS library.

/**
 * @author mbechler
 *
 */
class SmbPipeHandleImpl implements SmbPipeHandleInternal {

    private static final Logger log = LoggerFactory.getLogger(SmbPipeHandleImpl.class);

    private final SmbNamedPipe pipe;
    private final boolean transact;
    private final boolean call;

    private final int openFlags;
    private final int access;
    private volatile boolean open = true;

     */
    @Override
    public int available() throws IOException {
        SmbNamedPipe pipe;
        TransPeekNamedPipe req;
        TransPeekNamedPipeResponse resp;

        if (file.type != SmbFile.TYPE_NAMED_PIPE) {
            return 0;
        }

        try {
            pipe = (SmbNamedPipe) file;
            file.open(SmbFile.O_EXCL, pipe.pipeType & 0xFF0000, SmbFile.ATTR_NORMAL, 0);

            } catch (final SmbAuthException sae) {
                throw sae;
            } catch (final SmbException se) {
                fp = 0L;
            }
        }
        if (file instanceof SmbNamedPipe && file.unc.startsWith("\\pipe\\")) {
            file.unc = file.unc.substring(5);
            file.send(new TransWaitNamedPipe("\\pipe" + file.unc), new TransWaitNamedPipeResponse());
        }

import jcifs.SmbPipeResource;
import jcifs.SmbResourceLocator;
import jcifs.smb.SmbNamedPipe;
import jcifs.smb.SmbPipeHandleInternal;
import jcifs.util.Encdec;

/**
 * Test class for DcerpcPipeHandle
 */
@ExtendWith(MockitoExtension.class)
class DcerpcPipeHandleTest {

    @Mock
    private CIFSContext mockContext;
    @Mock
    private SmbNamedPipe mockSmbNamedPipe;
    @Mock

        if (this.handle == null || !this.handle.isValid()) {
            // one extra acquire to keep this open till the stream is released
            if (this.file instanceof SmbNamedPipe) {
                this.handle = this.file.openUnshared(SmbConstants.O_EXCL, ((SmbNamedPipe) this.file).getPipeType() & 0xFF0000, this.sharing,
                        SmbConstants.ATTR_NORMAL, 0);
            } else {

            final SmbComNTCreateAndX request = new SmbComNTCreateAndX(unc, flags, access, shareAccess, attrs, options, null);
            if (this instanceof SmbNamedPipe) {
                request.flags0 |= 0x16;
                request.desiredAccess |= 0x20000;
                response.isExtended = true;
            }
            send(request, response);