Hi Christian,
read http://root.cern.ch/root/NetFile.html the piece about
authentication. Probably you have shadow passwd on your system and in
that case rootd has to be started via (x)inetd. To use it by starting it
from the command line use the .rootdpass method or SRP.
When puting "localhost" in the path the system will force the use of
TNetFile. When putting the real hostname in the path the system is
clever enough to realize that the file really is local and opens the
file via TFile.
Cheers, Fons.
On Sun, 2002-03-10 at 19:05, cstrato@EUnet.at wrote:
> Dear Rooters
>
> I would like to open a root file as TNetFile on my local machine,
> a PowerBook running LinuxPPC.
>
> I did the following:
> In one terminal I started rootd with: rootd -p 1094
>
> In the second terminal I started root:
> [christian@cookiebook rt]$ root
> *******************************************
> * *
> * W E L C O M E to R O O T *
> * *
> * Version 3.03/02 2 March 2002 *
> * *
> * You are welcome to visit our Web site *
> * http://root.cern.ch *
> * *
> *******************************************
>
> Compiled for linuxppcegcs.
>
> CINT/ROOT C/C++ Interpreter version 5.15.32, Feb 10 2002
> Type ? for help. Commands must be C++ statements.
> Enclose multiple statements between { }.
> root [0] TFile *f =
> TFile::Open("root://localhost:1094/test.root","READ")
> Name (localhost:christian): christian
> Password:
> Error in <Authenticate>: wrong passwd
> Error in <TNetFile::TNetFile>: authentication failed for host localhost
> root [1] TFile *f =
> TFile::Open("root://cookiebook:1094/rt/test.root","READ")
> Warning in <TClass::TClass>: no dictionary for class TTestA is available
>
> root [2] f.ls()
> TFile** /home/christian/rt/test.root
> TFile* /home/christian/rt/test.root
> KEY: TTree TestA;1 CS
> root [3] f.Print()
> TFile: name=/home/christian/rt/test.root, title=, option=READ*
> ...etc...
>
> As you can see I tried two different options:
> In the first case: TFile::Open("root://localhost:1094/test.root","READ")
>
> rootd asks for a username and password, but does not accept my password.
>
> In the second case:
> TFile::Open("root://cookiebook:1094/rt/test.root","READ")
> root opens the file as a simple TFile but not as TNetFile,
> as can be seen from f.Print().
>
> My question now is:
> How can I open a file as TNetFile?
> What is wrong in the first case, that rootd does not accept my password?
>
> Why does root open the file as TFile only in the second case?
>
> Thank you very much in advance.
>
> Best regards
> Christian
> ----------------------------------
> C.h.r.i.s.t.i.a.n S.t.r.a.t.o.w.a
> V.i.e.n.n.a, A.u.s.t.r.i.a
>
--
Org: CERN, European Laboratory for Particle Physics.
Mail: 1211 Geneve 23, Switzerland
E-Mail: Fons.Rademakers@cern.ch Phone: +41 22 7679248
WWW: http://root.cern.ch/~rdm/ Fax: +41 22 7679480
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