import org.elasticsearch.cluster.routing.allocation.RoutingAllocation;
import org.elasticsearch.cluster.routing.allocation.allocator.BalancedShardsAllocator;
import org.elasticsearch.cluster.routing.allocation.decider.AllocationDecider;
import org.elasticsearch.cluster.routing.allocation.decider.AllocationDeciders;
import org.elasticsearch.common.settings.ClusterSettings;
import org.elasticsearch.common.settings.Settings;

/**
 * Represents the FILE_FS_FULL_SIZE_INFORMATION structure used to query comprehensive file system size information.
 * This structure provides complete allocation details including total allocation units, caller-available free units,
 * actual free allocation units, sectors per allocation unit, and bytes per sector.
 */
public class FileFsFullSizeInformation implements AllocInfo, FileSystemInformation, Decodable {

import jcifs.internal.util.SMBUtil;

/**
 * Represents the FILE_FS_SIZE_INFORMATION structure used to query file system size information.
 * This structure provides details about the total allocation units, free allocation units,
 * sectors per allocation unit, and bytes per sector for a file system volume.
 */
public class FileFsSizeInformation implements AllocInfo {

    private long alloc; // Also handles SmbQueryFSSizeInfo

        byte[] buffer = new byte[28];
        // Mock data for SmbQueryFSSizeInfo
        writeInt8(2000, buffer, 0); // total allocation units
        writeInt8(1000, buffer, 8); // free allocation units
        writeInt4(8, buffer, 16); // sectors per allocation unit
        writeInt4(4096, buffer, 20); // bytes per sector

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

 * This structure provides allocation information for a file system including total units,
 * free units, sectors per allocation unit, and bytes per sector.
 */
public class SmbInfoAllocation implements AllocInfo {

    /**
     * Default constructor for SMB allocation information.
     */
    public SmbInfoAllocation() {
        // Default constructor
    }

/**
 * Interface for file system allocation information providing capacity and free space details.
 * Used in SMB protocol operations to query disk space information from remote SMB shares.
 *
 * @author mbechler
 */
public interface AllocInfo extends FileSystemInformation {

    /**
     * Gets the total capacity of the allocation.
     *
     * @return total capacity
     */

          "type": "array",
          "items": {
            "type": "integer"
          }
        },
        "area": {
          "type": "string",
          "enum": [
            "Aggregations",
            "Allocation",
            "Analysis",
            "Audit",
            "Authentication",
            "Authorization",
            "Autoscaling",
            "CCR",
            "CRUD",
            "Client",

 * this class separates _allocations_ from _streams_. An allocation is created by a call, used for
 * one or more streams, and then released. An allocated connection won't be stolen by other calls
 * while a redirect or authorization challenge is being handled.
 *
 * When the maximum concurrent streams limit is reduced, some allocations will be rescinded.
 * Attempting to create new streams on these allocations will fail.
 *

import org.junit.jupiter.api.Test;

/**
 * Security-focused test cases for BufferCache to verify buffer overflow protection.
 */
public class BufferCacheSecurityTest {

    /**
     * Test that buffer allocation validates size to prevent overflow.
     */
    @Test
    public void testBufferSizeValidation() {
        // When - Get a buffer
        byte[] buffer = BufferCache.getBuffer();

        final int start = bufferIndex;

        final SmbInfoAllocation info = new SmbInfoAllocation();

        // Read total allocation units.
        info.alloc = readInt8(buffer, bufferIndex);
        bufferIndex += 8;

        // read caller available allocation units
        info.free = readInt8(buffer, bufferIndex);
        bufferIndex += 8;

        // skip actual free units
        bufferIndex += 8;