*/
package jcifs.smb.compression;

import jcifs.CIFSException;

/**
 * Interface for SMB3 compression services.
 *
 * Provides compression and decompression functionality for SMB3 protocol
 * data transfers with support for multiple compression algorithms.
 */
public interface CompressionService {

    /**
     * Compression algorithm constants matching SMB3 specification.
     */

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

import jcifs.CIFSException;

/**
 * Default implementation of SMB3 compression service.
 *
 * Provides compression using Java's built-in deflate algorithm as a base
 * for LZ77-based compression. For production use, more specialized
 * implementations of LZNT1 and Pattern_V1 algorithms would be needed.
 */

        byte[] smallData = new byte[100]; // Below minimum compression size

        byte[] compressed = compressionService.compress(smallData, CompressionService.COMPRESSION_LZ77);
        // Should return uncompressed data for small inputs
        assertArrayEquals(smallData, compressed);
    }

    @Test
    @DisplayName("Test large data compression")
    public void testLargeDataCompression() throws CIFSException {

    // Context type
    /** Context ID for compression capabilities */
    public static final int NEGO_CTX_COMPRESSION_TYPE = 0x3;

    // SMB3 Compression Algorithms
    /** No compression */
    public static final int COMPRESSION_NONE = 0x0;
    /** LZ77 compression */
    public static final int COMPRESSION_LZ77 = 0x1;
    /** LZ77 + Huffman compression */
    public static final int COMPRESSION_LZ77_HUFFMAN = 0x2;

package jcifs.smb.compression;

import static org.junit.jupiter.api.Assertions.assertArrayEquals;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;

import java.util.Properties;

                negoContexts.add(new EncryptionNegotiateContext(config, cipherArray));
            }

            // Add compression context for SMB3 compression support
            if (config.isCompressionEnabled()) {
                negoContexts.add(new CompressionNegotiateContext(config, new int[] { CompressionNegotiateContext.COMPRESSION_LZ77,

     * @since 2.2
     */
    boolean isAES256Enabled();

    /**
     * Property {@code jcifs.smb.client.compressionEnabled} (boolean, default false)
     *
     * @return whether SMB3 compression is enabled
     */
    boolean isCompressionEnabled();

    /**
     *
     * Property {@code jcifs.smb.client.forceExtendedSecurity} (boolean, default false)
     *

    /** Whether to enforce signing for IPC connections */
    protected boolean ipcSigningEnforced = true;
    /** Whether SMB3 encryption is enabled */
    protected boolean encryptionEnabled = false;
    /** Whether SMB3 compression is enabled */
    protected boolean compressionEnabled = false;
    /** Preferred encryption ciphers in order of preference */
    protected String preferredCiphers = "AES_128_GCM,AES_128_CCM,AES_256_GCM,AES_256_CCM";