public long getFree() {
        return this.free * this.sectPerAlloc * this.bytesPerSect;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.Decodable#decode(byte[], int, int)
     */
    @Override
    public int decode(final byte[] buffer, int bufferIndex, final int len) throws SMBProtocolDecodingException {
        final int start = bufferIndex;

        // Read total allocation units.

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.tls.internal.der

import okio.Buffer
import okio.ByteString

/**
 * Encode and decode a model object like a [Long] or [Certificate] as DER bytes.
 */
internal interface DerAdapter<T> {
  /** Returns true if this adapter can read [header] in a choice. */
  fun matches(header: DerHeader): Boolean

  /**

      return decode(certificatePem, pkcs8Base64)
    }

    private fun decode(
      certificatePem: String,
      pkcs8Base64Text: String,
    ): HeldCertificate {
      val certificate = certificatePem.decodeCertificatePem()

      val pkcs8Bytes =
        pkcs8Base64Text.decodeBase64()
          ?: throw IllegalArgumentException("failed to decode private key")

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

/**
 * JUnit 5 tests for AndXServerMessageBlock in legacy smb1 package.
 *
 * The tests use small stub subclasses to drive encode/decode paths and
 * validate batching, chaining, signing, and NT_CREATE_ANDX extended handling.
 */
class AndXServerMessageBlockTest {

    /**
     * Test stub for AndXServerMessageBlock to control read/write logic.

        assertNull(response.getInfo());
    }

    @Test
    void testReadDataWireFormat_EmptyBuffer() throws Exception {
        // Test with empty dataCount but decode still processes buffer
        // Note: SmbInfoAllocation.decode() doesn't check len parameter, always reads 20 bytes
        response = new Trans2QueryFSInformationResponse(config, FileSystemInformation.SMB_INFO_ALLOCATION);

     */
    public long getLengthInBytes() {
        return this.lengthInBytes;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.Decodable#decode(byte[], int, int)
     */
    @Override
    public int decode(final byte[] buffer, final int bufferIndex, final int len) throws SMBProtocolDecodingException {
        if (this.largeFile) {
            this.pid = SMBUtil.readInt2(buffer, bufferIndex);

            dstIndex += this.salt.length;
        }

        return dstIndex - start;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.Decodable#decode(byte[], int, int)
     */
    @Override
    public int decode(final byte[] buffer, int bufferIndex, final int len) throws SMBProtocolDecodingException {
        final int start = bufferIndex;
        final int nalgos = SMBUtil.readInt2(buffer, bufferIndex);

     * @return the data
     */
    public byte[] getData() {
        return this.data;
    }

    /**
     * {@inheritDoc}
     *
     * @see Decodable#decode(byte[], int, int)
     */
    @Override
    public int decode(final byte[] buffer, int bufferIndex, final int len) throws SMBProtocolDecodingException {
        final int start = bufferIndex;
        this.namedPipeState = SMBUtil.readInt4(buffer, bufferIndex);

        // Byte count (2 bytes)
        buffer[53] = 0x00;
        buffer[54] = 0x00;

        // Test decode
        int bytesDecoded = response.decode(buffer, 0);

        // Should decode at least the header
        assertTrue(bytesDecoded > 0);

        // Verify the command was decoded correctly
        assertEquals(ServerMessageBlock.SMB_COM_TRANSACTION2, response.getCommand());
    }

    @Test

public interface CommonServerMessageBlock extends Message {

    /**
     * Decode message data from the given byte array
     *
     * @param buffer the byte array containing the message data
     * @param bufferIndex the starting index in the buffer
     * @return message length
     * @throws SMBProtocolDecodingException if decoding fails
     */
    int decode(byte[] buffer, int bufferIndex) throws SMBProtocolDecodingException;

    /**