[sane-devel] [sane-commit] CVS update of sane-backends (3 files)

[Nicolas Martin]

Ok, I don't know too much about those functions, but this quick & dirty
code seems to work well on Ubuntu (Hardy 8.04):

#include <pwd.h>
#include <stdio.h>

int main()
{
  struct passwd *uid;
  uid = getpwuid(geteuid());
  printf("user=%s\n", uid->pw_name);
}

Prints my username correctly. Also prints root if runned with sudo ;-)


Le samedi 06 décembre 2008 à 17:31 +0100, Julien BLACHE a écrit :
> Louis Lagendijk <llagendijk-guest at alioth.debian.org> wrote:
> 
> Hi,
> 
> > backend/pixma_bjnp.c pixma_bjnp_private.h
> > On Ubuntu getlogin() returns NULL. So we noew first try getlogin()
> > and if that fails, we try getenv("USER") and if that fails we use
> > a defaul user string
> 
> You want geteuid() + getpwuid() instead of getlogin() which relies on
> utmp and thus is unreliable.
> 
> Also, never trust an environment variable.
> 
> JB.
> 
> -- 
> Julien BLACHE                                   <http://www.jblache.org> 
> <jb at jblache.org>                                  GPG KeyID 0xF5D65169
>