/**
 * Interface for objects that can be decoded from a byte buffer.
 * This interface provides methods for deserializing data from SMB protocol messages.
 *
 * @author mbechler
 */
public interface Decodable {

    /**
     * Decode data from a byte buffer
     *
     * @param buffer the byte buffer containing the data to decode
     * @param bufferIndex the starting index in the buffer
     * @param len the maximum length of data to decode

package jcifs.internal.dfs;

import java.nio.charset.StandardCharsets;

import jcifs.Encodable;
import jcifs.internal.util.SMBUtil;

/**
 * DFS (Distributed File System) referral request buffer encoder.
 * Creates encoded request buffers for DFS referral requests, specifying the maximum
 * referral level and target path for which DFS resolution is requested.
 *
 * @author mbechler
 */

        // Should read nothing (returns 0)
        assertEquals(0, read);
    }

    @Test
    void testReadDataWireFormat() {
        trans2QueryPathInfo = new Trans2QueryPathInformation(config, TEST_FILENAME, TEST_INFO_LEVEL);

        byte[] buffer = new byte[256];
        int read = trans2QueryPathInfo.readDataWireFormat(buffer, 0, buffer.length);

        try {
            return channel.read(buffer);
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

    /**
     * Reads the contents of the file channel into a byte buffer.
     *
     * @param channel
     *            The file channel. Must not be {@literal null}.
     * @param buffer

        byte[] buffer = { 0x00, 0x00, // status = 0 (Success)
                0x12, 0x34, // converter = 0x3412
                0x02, 0x00, // numEntries = 2
                0x05, 0x00 // totalAvailableEntries = 5
        };

        int bytesRead = response.readParametersWireFormat(buffer, 0, buffer.length);

        assertEquals(8, bytesRead, "Should read 8 bytes for parameters.");

        buffer[i] = b;
        if (i == BLOCK_LENGTH - 1) {
            transform(buffer, 0);
        }
    }

    /**
     * MD4 block update operation.
     * <p>
     * Continues an MD4 message digest operation, by filling the buffer,
     * transform(ing) data in 512-bit message block(s), updating the variables
     * context and count, and leaving (buffering) the remaining bytes in buffer
     * for the next update or finish.

        byte[] buffer = new byte[4096];

        // When
        req.encode(buffer, 0);

        // Then
        byte[] pathBytes = longPath.getBytes(StandardCharsets.UTF_16LE);
        assertEquals(pathBytes.length, SMBUtil.readInt2(buffer, Smb2Constants.SMB2_HEADER_LENGTH + 6));
    }

    @Test
    @DisplayName("Should throw exception when buffer too small for path")

        request.setCloseFlags(testFlags);

        byte[] buffer = new byte[256];
        int written = request.writeBytesWireFormat(buffer, 0);

        assertEquals(24, written);
        assertEquals(24, SMBUtil.readInt2(buffer, 0));
        assertEquals(testFlags, SMBUtil.readInt2(buffer, 2));
    }

    @Test

        void testWriteBytesDoesNotOverflow() {
            byte[] buffer = new byte[100];
            // Fill buffer with known values
            for (int i = 0; i < buffer.length; i++) {
                buffer[i] = (byte) 0xFF;
            }

            int startIndex = 50;
            echoRequest.writeBytesWireFormat(buffer, startIndex);

            // Check bytes before written area are unchanged

        byte[] buffer = new byte[8];
        // numEntries = 2
        writeInt2(2, buffer, 0);
        // isEndOfSearch = false
        buffer[2] = 0x00;
        buffer[3] = 0x00;
        // eaErrorOffset = 3
        writeInt2(3, buffer, 4);
        // lastNameOffset = 4
        writeInt2(4, buffer, 6);

        int bytesRead = response.readParametersWireFormat(buffer, 0, buffer.length);