Пример #1
0
        public void enumerateFATDevices()
        {
            disks = new List<HardDrive>();

            ManagementObjectSearcher search = new ManagementObjectSearcher("SELECT * FROM Win32_DiskDrive");

            //Iterate over each search result - list of HD's from WMI
            foreach (ManagementObject wmi_HD in search.Get())
            {
                HardDrive hdd = new HardDrive();
                hdd.Model = wmi_HD["Model"].ToString();
                hdd.Type = wmi_HD["InterfaceType"] == null ? "" : wmi_HD["InterfaceType"].ToString();
                hdd.DeviceId = wmi_HD["DeviceId"].ToString();

                BufferedDiskReader disk = new BufferedDiskReader(hdd.DeviceId);

                //Occurs when in use or insufficient privileges
                if (disk.IsInvalid)
                {
                    int error = Marshal.GetLastWin32Error();
                    MessageBox.Show(this, "Please verify you have Administrator Privileges and disks are not in use.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Stop);
                    continue;
                }

                //HDD is valid, add to our list
                disks.Add(hdd);

                //Sector buffer
                byte[] data = new byte[512];

                //Fill Buffer
                disk.Read(data, 0, 512);

                //Deserialize data into MasterBootRecord
                hdd.MBR = new MasterBootRecord(data);

                //Iterate over partitions in MBR
                foreach (PartitionTableEntry entry in hdd.MBR.PartitionTable.Partitions)
                {
                    //Clear data buffer
                    data = new byte[512];

                    //Seek to Partition start (FAT32 boot sector, location given in Partition table entry in Sectors)
                    disk.SeekAbsolute((ulong)entry.LBA_Begin1 * BYTES_PER_SECTOR);

                    //Read FAT32 BootSector - Volume Info
                    disk.Read(data, 0, data.Length);

                    //Deserialize data into Partition object
                    hdd.Partitions.Add(new Partition(data, hdd, entry));
                }

                //Got to remember to close the disk
                disk.Close();
            }
        }
Пример #2
0
        /*
         * ReadFAT - Read FAT table 1 into memory
         */
        public void ReadFAT(BufferedDiskReader disk)
        {
            byte[] fatBytes = new byte[(bootSector.BPB.SectorsPerFAT32 * bootSector.BPB.BytesPerSector)];
            FAT = new uint[fatBytes.Length / 4];

            disk.SeekAbsolute((ulong)(bootSector.BPB.BytesPerSector * fatBeginLBA));
            disk.Read(fatBytes, 0, fatBytes.Length);

            for (int i = 0; i < FAT.Length; i++)
            {
                FAT[i] = (uint)(fatBytes[i * 4 + 3] << 24 | fatBytes[i * 4 + 2] << 16 | fatBytes[i * 4 + 1] << 8 | fatBytes[i * 4 + 0]);
            }
        }
Пример #3
0
        private byte[] ReadCluster(BufferedDiskReader disk, uint cluster)
        {
            byte[] clusterBytes = new byte[(ulong)bootSector.BPB.BytesPerSector * (ulong)bootSector.BPB.SectorsPerCluster];

            //Calculate LBA for first cluster
            uint clusterLBA = (uint)(ClusterBeginLBA + (cluster - 2) * BootSector.BPB.SectorsPerCluster);

            ulong clusterStartByte = (ulong)bootSector.BPB.BytesPerSector * (ulong)clusterLBA;

            disk.SeekAbsolute(clusterStartByte);

            //for (int i = 0; i < bootSector.BPB.SectorsPerCluster; i++)
            //{
            //    byte[] data = new byte[bootSector.BPB.BytesPerSector];
            //    disk.Read(data, 0, data.Length);
            //    Array.Copy(data, 0, clusterBytes, i * bootSector.BPB.BytesPerSector, bootSector.BPB.BytesPerSector);
            //}
            disk.Read(clusterBytes, 0, clusterBytes.Length);
            return clusterBytes;
        }
Пример #4
0
        /*
         * ParseDirectoryEntries - Seeks disk to Directory Table start then begins recursive creation         *
         */
        public void ParseDirectoryEntries(BufferedDiskReader disk)
        {
            disk.SeekAbsolute((ulong)this.clusterBeginLBA * BootSector.BPB.BytesPerSector);

            int error = Marshal.GetLastWin32Error();

            byte[] data = new byte[32];
            disk.Read(data, 0, data.Length);

            rootDirectory = new DirectoryEntry(data, disk, this);
            if (!rootDirectory.IsVolumeID)
            {
                DirectoryEntry entry = rootDirectory;
                rootDirectory = new DirectoryEntry();
                rootDirectory.Children.Add(entry);
                disk.Read(data, 0, data.Length);
                entry = new DirectoryEntry(data, disk, this);
                while (entry.Type != DirectoryEntryType.EndOfDirectory)
                {
                    if (entry.Type != DirectoryEntryType.Unused)
                    {
                        rootDirectory.Children.Add(entry);
                    }
                    disk.Read(data, 0, data.Length);
                    entry = new DirectoryEntry(data, disk, this);
                }
            }
        }