我正在开发一个客户端/服务器应用程序，它需要根据硬盘序列号和物理适配器 MAC 地址为每个注册客户端分配一个唯一标识符...但我不喜欢使用 ManagementObjectSearcher 或任何 WMI 解决方案，因为它们很慢。如何使用 native 方法获取这些值？
最佳答案
如果您想从硬件值中获取唯一标识符，您必须记住，对每个注册客户端始终应用相同的方法非常重要。我的意思是，如果一台机器有多个硬盘驱动器，而且这种情况很常见，您将始终必须为每个人从第一个或最后一个硬盘中取出序列号。 除非您这样做只是为了许可目的，否则您还必须实现一种能够理解用户是否更改了其计算机的一个或多个组件的容差算法。 我将向您展示我通常用来从硬件值中创建唯一标识符的代码……它可能有点过时，特别是对于 64x 支持(尤其是注册表键和指针)，但这只是为了给您一个想法。指纹是使用 native 方法从第一个硬盘序列号、第一个适配器 MAC 地址和 SMBIOS 数据创建的。
public static class HardwareAnalyzer
{
#region Methods: Imports
[DllImport("Iphlpapi.dll", CharSet = CharSet.Unicode, ExactSpelling = true, SetLastError = true)]
internal static extern Int32 GetAdaptersInfo(IntPtr handle, ref UInt32 size);
[DllImport("Kernel32.dll", CharSet = CharSet.Unicode, ExactSpelling = true, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
internal static extern Boolean CloseHandle([In] IntPtr handle);
[DllImport("Kernel32.dll", CharSet = CharSet.Unicode, ExactSpelling = true, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
internal static extern Boolean DeviceIoControl([In] IntPtr handle, [In] UInt32 controlCode, [In, Optional] IntPtr bufferIn, [In] UInt32 bufferInSize, [Out, Optional] IntPtr bufferOut, [In] UInt32 bufferOutSize, [Out] out UInt32 bytesReturned, [In, Out, Optional] IntPtr overlapped);
[DllImport("Kernel32.dll", CharSet = CharSet.Unicode, ExactSpelling = false, SetLastError = true)]
internal static extern IntPtr CreateFile([In] String fileName, [In] eFileAccess fileAccess, [In] EFileShare fileShare, [In, Optional] IntPtr fileSecurity, [In] eCreationDisposition creationDisposition, [In] UInt32 flags, [In, Optional] IntPtr handleTemplateFile);
#endregion
#region Methods: Functions
private static String RetrieveDiskSerial()
{
String serial = String.Empty;
try
{
IntPtr handle = IntPtr.Zero;
for (Int32 i = 0; i < 16; ++i)
{
handle = CreateFile(String.Format("\\\\.\\PhysicalDrive{0}", i), (eFileAccess.GenericRead | eFileAccess.GenericWrite), (EFileShare.Read | EFileShare.Write), IntPtr.Zero, eCreationDisposition.OpenExisting, 0, IntPtr.Zero);
if (handle != IntPtr.Zero)
{
serial = RetrieveDiskSerialSmart(handle);
if (serial.Length == 0)
serial = RetrieveDiskSerialStorageQuery(handle);
if (serial.Length == 0)
continue;
if (!CloseHandle(handle))
Console.WriteLine("WARNING: a file handle has not been correctly closed.");
break;
}
}
}
catch { }
return serial;
}
private static String RetrieveDiskSerialSmart(IntPtr handle)
{
IntPtr bufferIn = Marshal.AllocHGlobal(32);
IntPtr bufferOut = Marshal.AllocHGlobal(24);
String serial = String.Empty;
UInt32 bytesReturned = 0;
try
{
if (DeviceIoControl(handle, 0x074080, IntPtr.Zero, 0, bufferOut, 24, out bytesReturned, IntPtr.Zero))
{
if ((Marshal.ReadInt32(bufferOut, 4) & 4) > 0)
{
SCInputParameters parameters = new SCInputParameters();
bufferOut = Marshal.ReAllocHGlobal(bufferOut, (IntPtr)528);
Marshal.StructureToPtr(parameters, bufferIn, true);
if (DeviceIoControl(handle, 0x07C088, bufferIn, 32, bufferOut, 528, out bytesReturned, IntPtr.Zero))
{
String serialANSI = Marshal.PtrToStringAnsi((IntPtr)(bufferOut.ToInt32() + 36), 20);
if (serialANSI.Length != 0)
{
Char[] serialANSICharacters = serialANSI.ToCharArray();
for (Int32 i = 0; i <= (serialANSICharacters.Length - 2); i += 2)
{
Char current = serialANSICharacters[i];
serialANSICharacters[i] = serialANSICharacters[(i + 1)];
serialANSICharacters[(i + 1)] = current;
}
serial = new String(serialANSICharacters).Trim();
}
}
}
}
}
finally
{
Marshal.FreeHGlobal(bufferIn);
Marshal.FreeHGlobal(bufferOut);
}
return serial;
}
private static String RetrieveDiskSerialStorageQuery(IntPtr handle)
{
IntPtr bufferIn = Marshal.AllocHGlobal(12);
IntPtr bufferOut = Marshal.AllocHGlobal(1024);
StoragePropertyQuery query = new StoragePropertyQuery();
String serial = String.Empty;
UInt32 bytesReturned = 0;
try
{
Marshal.StructureToPtr(query, bufferIn, true);
if (DeviceIoControl(handle, 0x2D1400, bufferIn, 12, bufferOut, 1024, out bytesReturned, IntPtr.Zero))
{
Int32 address = bufferOut.ToInt32();
Int32 offset = Marshal.ReadInt32(bufferOut, 24);
if (offset != 0)
{
String serialANSI = Marshal.PtrToStringAnsi((IntPtr)(address + offset));
if (serialANSI.Length != 0)
{
StringBuilder builder = new StringBuilder();
for (Int32 i = 0; i < serialANSI.Length; i += 4)
{
for (Int32 j = 1; j >= 0; --j)
{
Int32 sum = 0;
for (Int32 y = 0; y < 2; ++y)
{
sum *= 16;
switch (serialANSI[(i + (j * 2) + y)])
{
case '0':
sum += 0;
break;
case '1':
sum += 1;
break;
case '2':
sum += 2;
break;
case '3':
sum += 3;
break;
case '4':
sum += 4;
break;
case '5':
sum += 5;
break;
case '6':
sum += 6;
break;
case '7':
sum += 7;
break;
case '8':
sum += 8;
break;
case '9':
sum += 9;
break;
case 'a':
sum += 10;
break;
case 'b':
sum += 11;
break;
case 'c':
sum += 12;
break;
case 'd':
sum += 13;
break;
case 'e':
sum += 14;
break;
case 'f':
sum += 15;
break;
}
}
if (sum > 0)
builder.Append((Char)sum);
}
}
serial = builder.ToString().Trim();
}
}
}
}
finally
{
Marshal.FreeHGlobal(bufferIn);
Marshal.FreeHGlobal(bufferOut);
}
return serial;
}
private static String RetrieveMACAddress()
{
String address = String.Empty;
try
{
UInt32 size = 0;
Int32 result = GetAdaptersInfo(IntPtr.Zero, ref size);
if ((result == 0) || (result == 111))
{
IntPtr buffer = Marshal.AllocHGlobal((IntPtr)size);
result = GetAdaptersInfo(buffer, ref size);
if (result == 0)
{
while (true)
{
String adapterName = Marshal.PtrToStringAnsi((IntPtr)(buffer.ToInt32() + 8));
IntPtr handle = CreateFile(String.Format("\\\\.\\{0}", adapterName), (eFileAccess.GenericRead | eFileAccess.GenericWrite), (EFileShare.Read | EFileShare.Write), IntPtr.Zero, eCreationDisposition.OpenExisting, 0, IntPtr.Zero);
if (handle != IntPtr.Zero)
{
IntPtr bufferIn = GCHandle.Alloc(0x1010101, GCHandleType.Pinned).AddrOfPinnedObject();
IntPtr bufferOut = Marshal.AllocHGlobal(6);
UInt32 bytesReturned = 0;
try
{
if (DeviceIoControl(handle, 0x170002, bufferIn, 4, bufferOut, 6, out bytesReturned, IntPtr.Zero))
{
String temporaryAddress = String.Empty;
for (Int32 i = 0; i < 6; ++i)
temporaryAddress += Marshal.ReadByte(bufferOut, i).ToString("X2") + ((i == 5) ? "" : ":");
if (temporaryAddress != "00:00:00:00:00:00")
{
address = temporaryAddress;
break;
}
}
}
finally
{
if (!CloseHandle(handle))
Console.WriteLine("WARNING: a file handle has not been correctly closed.");
Marshal.FreeHGlobal(bufferOut);
}
}
Int32 nextAdapterOffset = Marshal.ReadInt32(buffer);
if (nextAdapterOffset != 0)
buffer = (IntPtr)nextAdapterOffset;
else
break;
}
}
}
}
catch { }
return address;
}
private static String RetrieveSMBiosData()
{
String data = String.Empty;
try
{
using (RegistryKey key = Registry.LocalMachine.OpenSubKey(@"System\CurrentControlSet\Services\MSSMBios\Data", false))
{
if (key != null)
{
Byte[] keyData = (Byte[])key.GetValue("SMBiosData");
if (keyData != null)
{
using (MD5CryptoServiceProvider provider = new MD5CryptoServiceProvider())
keyData = provider.ComputeHash(keyData);
for (Int32 i = 0; i < keyData.Length; ++i)
data += keyData[i].ToString("X2");
}
}
}
}
catch { }
return data;
}
public static String CreateFingerprint()
{
String serial = RetrieveDiskSerial();
String address = RetrieveMACAddress();
String data = RetrieveSMBiosData();
if ((serial.Length == 0) && (address.Length == 0) && (data.Length == 0))
return "0000-0000-0000-0000-0000-0000-0000-0000";
String fingerprint = String.Empty;
using (MD5CryptoServiceProvider provider = new MD5CryptoServiceProvider())
{
Byte[] hash = provider.ComputeHash(Encoding.ASCII.GetBytes(serial + " - " + address + " - " + data));
for (Int32 i = 0; i < 16; ++i)
{
fingerprint += hash[i].ToString("X2");
if (((i & 1) != 0) && (i != 15))
fingerprint += "-";
}
}
return fingerprint;
}
#endregion
#region Nesting: Enumerators
public enum eCreationDisposition : uint
{
New = 1,
CreateAlways = 2,
OpenExisting = 3,
OpenAlways = 4,
TruncateExisting = 5
}
[Flags]
public enum eFileAccess : uint
{
Delete = 0x00010000,
ReadControl = 0x00020000,
WriteDAC = 0x00040000,
WriteOwner = 0x00080000,
Synchronize = 0x00100000,
AccessSystemSecurity = 0x01000000,
MaximumAllowed = 0x02000000,
GenericAll = 0x10000000,
GenericExecute = 0x20000000,
GenericWrite = 0x40000000,
GenericRead = 0x80000000
}
[Flags]
public enum EFileShare : uint
{
None = 0x00000000,
Read = 0x00000001,
Write = 0x00000002,
Delete = 0x00000004
}
#endregion
#region Nesting: Structures
[StructLayout(LayoutKind.Sequential)]
private class SCInputParameters
{
private int BufferSize = 528;
private Byte Features = 0;
private Byte SectorCount = 1;
private Byte SectorNumber = 1;
private Byte LowOrderCylinder = 0;
private Byte HighOrderCylinder = 0;
private Byte DriveHead = 160;
private Byte Command = 236;
private Byte Reserved = 0;
private Byte DriveNumber = 0;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
private Byte[] UselessData = new Byte[16];
}
[StructLayout(LayoutKind.Sequential)]
private class StoragePropertyQuery
{
private Int32 PropertyID;
private Int32 QueryType;
private Int32 UselessData;
}
#endregion
}
您只需调用 HardwareAnalyzer.CreateFingerprint() 即可获得所需内容。
关于c# - 检索硬盘序列号和物理 MAC 地址的最快方法，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/14329673/