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Declare Function LookupAccountName Lib "advapi32.dll" Alias "LookupAccountNameA" (ByVal lpSystemName As IntPtr, ByVal lpAccountName As String, ByVal psid As IntPtr, ByRef cbSid As Integer, ByVal ReferencedDomainName As String, ByRef cbReferencedDomainName As Integer, ByRef peUse As Short) As Integer
User-Defined Types:
None.
Notes:
From the SDK:
The LookupAccountName function attempts to find a SID for the specified name by first checking a list of well-known SIDs. If the name does not correspond to a well-known SID, the function checks built-in and administratively defined local accounts. Next, the function checks the primary domain. If the name is not found there, trusted domains are checked.
Use fully qualified account names (for example, domain_name\user_name) instead of isolated names (for example, user_name). Fully qualified names are unambiguous and provide better performance when the lookup is performed. This function also supports fully qualified DNS names (for example, example.example.com\user_name) and user principal names (UPN) (for example, someone@example.com).
Windows NT: DNS and UPN names are not supported by this function.
In addition to looking up local accounts, local domain accounts, and explicitly trusted domain accounts, LookupAccountName can look up the name for any account in any domain in the forest.
Windows NT: Forest lookup is not supported.
Tips & Tricks:
Please add some!
Sample Code:
using System;
using System.Runtime.InteropServices;
using System.Text;
namespace test
{
class clsLookupAccountName
{
const int NO_ERROR = 0;
const int ERROR_INSUFFICIENT_BUFFER = 122;
int err = NO_ERROR;
if (!LookupAccountName(null,accountName,Sid,ref cbSid,referencedDomainName,ref cchReferencedDomainName,out sidUse))
{
err = Marshal.GetLastWin32Error();
if (err == ERROR_INSUFFICIENT_BUFFER)
{
Sid = new byte[cbSid];
referencedDomainName.EnsureCapacity((int)cchReferencedDomainName);
err = NO_ERROR;
if (!LookupAccountName(null,accountName,Sid,ref cbSid,referencedDomainName,ref cchReferencedDomainName,out sidUse))
err = Marshal.GetLastWin32Error();
}
}
if (err == 0)
{
IntPtr ptrSid;
if (!ConvertSidToStringSid(Sid,out ptrSid))
{
err = Marshal.GetLastWin32Error();
Console.WriteLine(@"Could not convert sid to string. Error : {0}",err);
}
else
{
string sidString = Marshal.PtrToStringAuto(ptrSid);
LocalFree(ptrSid);
Console.WriteLine(@"Found sid {0} : {1}",sidUse,sidString);
}
}
else
Console.WriteLine(@"Error : {0}",err);
}
}
}
Alternative Managed API:
TODO
The LookupAccountName function accepts the name of a system and an account as input. It retrieves a security identifier (SID) for the account and the name of the domain on which the account was found.
11/20/2010 8:27:50 AM - Patrick-65.73.255.18
The LookupAccountName function accepts the name of a system and an account as input. It retrieves a security identifier (SID) for the account and the name of the domain on which the account was found.
11/20/2010 8:27:50 AM - Patrick-65.73.255.18
The SID_IDENTIFIER_AUTHORITY structure represents the top-level authority of a security identifier (SID).
5/28/2007 2:31:00 PM - -209.87.228.158
The LookupAccountName function accepts the name of a system and an account as input. It retrieves a security identifier (SID) for the account and the name of the domain on which the account was found.
11/20/2010 8:27:50 AM - Patrick-65.73.255.18
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