/// <summary>
/// Converts the specified string to an LSA string value
/// </summary>
/// <param name="Value"></param>
static LSA_UNICODE_STRING InitLsaString(string Value)
{
if (Value.Length > 0x7ffe)
{
throw new ArgumentException("String too long");
}
LSA_UNICODE_STRING lus = new LSA_UNICODE_STRING();
lus.Buffer = Value;
lus.Length = (ushort)(Value.Length * sizeof(char));
lus.MaximumLength = (ushort)(lus.Length + sizeof(char));
return(lus);
}
/// <summary>
/// Creates a new LSA wrapper for the specified MachineName
/// </summary>
/// <param name="MachineName">The name of the machine that should be connected to</param>
public LsaWrapper(string MachineName)
{
LSA_OBJECT_ATTRIBUTES lsaAttr;
lsaAttr.RootDirectory = IntPtr.Zero;
lsaAttr.ObjectName = IntPtr.Zero;
lsaAttr.Attributes = 0;
lsaAttr.SecurityDescriptor = IntPtr.Zero;
lsaAttr.SecurityQualityOfService = IntPtr.Zero;
lsaAttr.Length = Marshal.SizeOf(typeof(LSA_OBJECT_ATTRIBUTES));
lsaHandle = IntPtr.Zero;
LSA_UNICODE_STRING[] system = null;
if (MachineName != null)
{
system = new LSA_UNICODE_STRING[1];
system[0] = InitLsaString(MachineName);
}
uint ret = Win32Sec.LsaOpenPolicy(system, ref lsaAttr, (int)Access.POLICY_ALL_ACCESS, out lsaHandle);
TestReturnValue(ret);
}
/// <summary>
/// Reads the user accounts which have the specific privilege
/// </summary>
/// <param name="Privilege">The name of the privilege for which the accounts with this right should be enumerated</param>
public List <String> ReadPrivilege(string Privilege)
{
LSA_UNICODE_STRING[] privileges = new LSA_UNICODE_STRING[1];
privileges[0] = InitLsaString(Privilege);
IntPtr buffer;
int count = 0;
uint ret = Win32Sec.LsaEnumerateAccountsWithUserRight(lsaHandle, privileges, out buffer, out count);
List <String> Accounts = new List <String>();
if (ret == 0)
{
LSA_ENUMERATION_INFORMATION[] LsaInfo = new LSA_ENUMERATION_INFORMATION[count];
for (int i = 0, elemOffs = (int)buffer; i < count; i++)
{
LsaInfo[i] = (LSA_ENUMERATION_INFORMATION)Marshal.PtrToStructure((IntPtr)elemOffs, typeof(LSA_ENUMERATION_INFORMATION));
elemOffs += Marshal.SizeOf(typeof(LSA_ENUMERATION_INFORMATION));
SecurityIdentifier SID = new SecurityIdentifier(LsaInfo[i].PSid);
Accounts.Add(ResolveAccountName(SID));
}
return(Accounts);
}
TestReturnValue(ret);
return(Accounts);
}
