Hi..
I'm in the process of porting a C++ library from Linux to Windows, and am having problems with getuid(), which is not supported in Windows.
Any ideas what I can use in its place?
+3
A:
You can retrieves the name of the user associated with the current thread with GetUserName :
// ANSI version
string GetWindowsUserNameA()
{
char buffer[UNLEN + 1] = {0};
DWORD buffer_len;
if (!::GetUserNameA(buffer, & buffer_len))
{
// error handling
}
return string(buffer);
}
Samuel_xL
2009-10-20 13:54:49
GetUserName() works on every version of windows, you can't trust minimal versions listed on MSDN
Anders
2009-10-20 20:29:21
@Anders, you are right, I've edited, thanks.
Samuel_xL
2009-10-20 21:11:00
The question specifies C++. Unless OP is willing to move to C++/CLI, this doesn't help.
ephemient
2009-10-20 18:10:23
+1
A:
Check out Microsoft's recommendations on porting with the Interix (also known as Services for UNIX 3.0) library. Overkill for what you want though.
Epsilon Prime
2009-10-20 13:56:36
+1
A:
Windows' closest equivalent of a UID is (probably) a SID. GetUserName followed by LookupAccountName should get you the user's SID.
Jerry Coffin
2009-10-20 14:03:13
+3
A:
The Windows equivilent is actually the user's SID. You can get this by using the "GetTokenInformation" call and querying for the TokenUser information class.
To call GetTokenInformation, you need a handle to the users token, which you can get by calling OpenProcessToken (or OpenThreadToken if you're impersonating someone).
Larry Osterman
2009-10-20 14:28:30
I believe this gets you information about the SID being used to run the process, so it's essentially equivalent to `geteuid()` rather than `getuid()`.
Jerry Coffin
2009-10-20 14:30:56