I found that GetUserName (in Win95/98) returns the userid of the last user who logged on to Windows on the machine.
If another user decides not to log on (i.e. presses Cancel on the login screen); starts the program that calls GetUserName, the program will "think" that the previous user is still logged on. Meaning : if no user is logged on, the user data is not reset. (hope you understand what my point is here)
For Novell you could use something like this : (it's a snippet from a component I wrote, but I'm sure you'll know how to adapt it to your own needs)
uses CalWin32, ClxWin32, NetWin32, Delphi_u;
var
FUserID : String;
connRef : nuint32;
buffer : Array[1..MaxSize] of char;
nwver : NWCCVersion;
userID : nuint32;
connHandle : NWCONN_HANDLE;
ctxFlags : nuint32;
objType : nuint16;
scanIterator : nuint32;
context : NWDSContextHandle;
cCode : NWCCODE;
dsCode : NWDSCCODE;
tmp : nptr;
PosDot, i : Integer;
begin
// Get Netware UserId
try
tmp := Nil;
cCode := NWCallsInit(tmp, tmp);
if cCode<>0 then
Raise EDBEngineError.CreateFmt('Error initializing Novell client',[]);
scanIterator := 0;
(* Use NWCCScanConnRefs() to retrieve a server connection *)
cCode := NWCCScanConnRefs(@scanIterator, @connRef);
if cCode<> 0 then
Raise EDBEngineError.CreateFmt('No server connection found',[]);
{ Get tree name from the connection reference }
cCode := NWCCGetConnRefInfo(connRef, NWCC_INFO_TREE_NAME, SizeOf(buffer), @buffer);
if cCode<> 0 then
Raise EDBEngineError.CreateFmt('No tree context found',[]);
// we'll not overwrite this buffer, sinc we're going to need the tree name later
{ Get server version from the connection reference }
cCode := NWCCGetConnRefInfo(connRef, NWCC_INFO_SERVER_VERSION, SizeOf(nwver), @nwver);
if cCode<> 0 then
Raise EDBEngineError.CreateFmt('Server version not found',[]);
{ Get the user ID and name from the connection reference }
FUserID := '';
cCode := NWCCGetConnRefInfo(connRef, NWCC_INFO_USER_ID, SizeOf(userID), @userID);
if cCode<> 0 then
Raise EDBEngineError.CreateFmt('User id not found',[]);
{ Having the user ID, we can now get the user name from bindery or NDS ...
first the connection number for the target server, then query for this user name }
cCode := NWCCOpenConnByRef(connRef, NWCC_OPEN_UNLICENSED, NWCC_RESERVED, @ConnHandle);
if cCode<> 0 then
Raise EDBEngineError.CreateFmt('Connection number for target server not found',[]);
if cCode=0 then case nwver.major of
2..3: begin { bindery method to read user name and last login time }
cCode := NWGetObjectName(connHandle, userID, @buffer, @objType);
if (cCode=0) then
FuserID := StrPas(@buffer)
else
FUserid:='';
end;
4..99: begin
NWDSCreateContextHandle(context); { Create an NDS context }
if context<>ERR_CONTEXT_CREATION then begin
{ if we could be attached to multiple trees, we need to set it }
NWDSSetContext(context, DCK_TREE_NAME, @buffer);
{ use typeless, fully specified names }
NWDSGetContext(context, DCK_FLAGS, @ctxFlags);
ctxFlags := (ctxFlags or DCV_TYPELESS_NAMES);
ctxFlags := (ctxFlags AND NOT DCV_CANONICALIZE_NAMES);
NWDSSetContext(context, DCK_FLAGS, @ctxFlags);
{ Map the user ID to the user name }
dsCode := NWDSMapIDToName(context, connHandle, userID, @buffer);
if dsCode=0 then FUserID := StrPas(@buffer);
NWDSFreeContext(context);
end;
end;
end; {case}
PosDot:=Pos('.', FUserID);
if PosDot<>0 then
SetLength(FUserID, PosDot - 1);
FUserID:=UpperCase(FUserID);
HTH
Bert
Bert De Ridder
Analyst/DBA
Nissan Belgium
Disclaimer : The opinions expressed in this message are my own,
and are not necessarily those of NV Nissan Belgium.
>>> 06/10/2000 07:38:08 >>>
Checked code in Delphi3 and I had to modify the 'count' type :
procedure TForm1.Button1Click(Sender: TObject);
VAR
Temp : PChar;
Count : dword;
begin
Count := 0;
GetUserName(nil,Count);
Temp := StrAlloc(Count);
GetUserName(Temp, Count);
caption := StrPas(Temp);
StrDispose(Temp);
end;
Works fine on Novell; but I do not know about Linux
rgds
-----Original Message-----
From: Martin Jambor [mailto:JamborM@gytool.cz]
Sent: donderdag 5 oktober 2000 18:41
To: delphi@elists.org
Subject: Re: Network User Name?
Will this work on Novell Networks, or users logged into some Liinux/Unix
box? Or is it NT Specific :( ?
TIA
Martin Jambor
GenJerDan wrote:
>
> > Further to saving multiple user INI files: How do I determine the
current
> > network user name?
>
> I do it this way:
>
> VAR
> Temp : PChar;
> Count : cardinal;
> begin
> Count := 0;
> GetUserName(nil,Count);
> Temp := StrAlloc(Count);
> GetUserName(Temp, Count);
> UserName := StrPas(Temp);
> StrDispose(Temp);
> end;
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