- 1 year ago
LookupAccountName error when ReferencedDomainName is NULL
The LookupAccountName
function in Windows API is used to retrieve the security identifier (SID) and the domain name associated with a specified user name. If the ReferencedDomainName
parameter is set to NULL, it won't return the domain name. Instead, it will only retrieve the SID and user name. If you're encountering an error when ReferencedDomainName
is NULL, you might need to ensure that your code is properly handling the error conditions.
Here's an example of how you can use LookupAccountName
with the ReferencedDomainName
set to NULL:
cpp#include <windows.h>
#include <iostream>
int main() {
wchar_t userName[256];
DWORD userNameSize = sizeof(userName) / sizeof(userName[0]);
SID_NAME_USE sidType;
SID sid;
DWORD sidSize = sizeof(sid);
// Provide the user name you want to look up
wprintf(L"Enter the user name: ");
wscanf_s(L"%255s", userName, _countof(userName));
if (LookupAccountName(NULL, userName, &sid, &sidSize, NULL, NULL, &sidType)) {
wprintf(L"User SID: %lu-%lu-%lu-%lu-%lu-%lu\n",
sid.Data1, sid.Data2, sid.Data3, sid.Data4[0], sid.Data4[1], sid.Data4[2]);
} else {
DWORD error = GetLastError();
std::cerr << "LookupAccountName failed with error: " << error << std::endl;
}
return 0;
}
In this example, the LookupAccountName
function is called with ReferencedDomainName
set to NULL. If the function fails, you can use GetLastError
to retrieve the error code and diagnose the issue. Make sure that you have the necessary privileges and handle potential errors appropriately in your code.