* an SMB server represented by the {@link jcifs.smb.SmbFile} parameter. See
     * {@link jcifs.smb.SmbFile} for a detailed description and examples of
     * the smb URL syntax.
     *
     * @param file
     *            An <code>SmbFile</code> specifying the file to write to
     * @throws SmbException if an SMB error occurs
     */

 * 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.smb;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.util.Arrays;
import java.util.concurrent.ConcurrentHashMap;

    }

    /**
     * Derives the SMB3 signing key from the session key using the appropriate KDF for the dialect.
     *
     * @param dialect the SMB dialect version
     * @param sessionKey the base session key
     * @param preauthIntegrity the pre-authentication integrity hash (for SMB 3.1.1) or null
     * @return derived signing key
     */

```properties
# Lease configuration
jcifs.smb.client.useLeases=true
jcifs.smb.client.leaseTimeout=30000

# Persistent handles
jcifs.smb.client.usePersistentHandles=true
jcifs.smb.client.durableTimeout=120000

# Multi-channel
jcifs.smb.client.useMultiChannel=true
jcifs.smb.client.maxChannels=4
jcifs.smb.client.channelBindingPolicy=required

# Directory leasing
jcifs.smb.client.useDirectoryLeasing=true

        return ret.toString();
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.smb.SSPContext#getFlags()
     */
    @Override
    public int getFlags() {
        return 0;
    }

    /**
     *
     * {@inheritDoc}
     *
     * @see jcifs.smb.SSPContext#isSupported(org.bouncycastle.asn1.ASN1ObjectIdentifier)
     */
    @Override

        if (!smbUrl.toLowerCase().startsWith("smb://")) {
            throw new SmbException("Invalid SMB URL format");
        }

        try {
            URL url = new URL(null, smbUrl, new jcifs.smb.Handler());

            // Validate host
            String host = url.getHost();
            if (host == null || host.isEmpty()) {
                throw new SmbException("SMB URL missing host");
            }

 */

package jcifs.smb1.smb1;

/**
 * Filter interface for SMB file listings
 */
public interface SmbFileFilter {
    /**
     * Tests whether the specified SMB file should be included in a file list.
     *
     * @param file the SMB file to test for inclusion
     * @return true if the file should be included, false otherwise

     * @param config the configuration
     * @param command the SMB command
     */
    protected AndXServerMessageBlock(final Configuration config, final byte command) {
        this(config, command, null);
    }

    /**
     * Constructs an AndX message block with command and chained command
     * @param config the configuration
     * @param command the SMB command
     * @param andx the chained command
     */

    static final int TRANSACTION_BUF_SIZE = 0xFFFF;

    /**
     * SMB TRANS2 subcommand for finding first matching files
     */
    public static final byte TRANS2_FIND_FIRST2 = (byte) 0x01;
    /**
     * SMB TRANS2 subcommand for finding next matching files
     */
    public static final byte TRANS2_FIND_NEXT2 = (byte) 0x02;
    /**
     * SMB TRANS2 subcommand for querying file system information
     */

 */
package jcifs.util;

import java.util.concurrent.atomic.AtomicLong;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import jcifs.smb.SmbException;

/**
 * Validator for SMB server responses to prevent buffer overflow and injection attacks.
 *
 * Features:
 * - Buffer bounds checking
 * - Integer overflow prevention
 * - Size validation