#include <stdio.h>
#include <grp.h>
#include <signal.h>

void
main (int argc, char **argv)
{
#if 0
  struct group
    {				/* see getgrent(3) */
      char *gr_name;
      char *gr_passwd;
      gid_t gr_gid;
      char **gr_mem;
    };
#endif

  scan_group ();
  exit (0);
}

void
dump (struct group *g)
{
  char mem[2048];
  char **p;

  int doit = (g->gr_mem && *(g->gr_mem));
  p = g->gr_mem;
  strcpy (mem, "");
  while (doit)
    {
      if (p != g->gr_mem)
	strcat (mem, ",");
      strcat (mem, *p);
      if (*(++p) == NULL)
	break;
    }
  printf ("%s:%s:%d:%s\n", g->gr_name, g->gr_passwd, g->gr_gid, mem);

}

scan_group ()
{
  struct group *g;

  signal(SIGPIPE, SIG_IGN);

  setgrent ();

  while ((g = getgrent ()) != NULL)
    {
      dump (g);
    }

  endgrent ();

	sleep(10);

  printf ("==> getgrnam(qmail)\n");
  g = getgrnam ("qmail");
  if (g != NULL)
    dump (g);
#if 0
  printf ("==> getgrnam(testgroup)\n");
  g = getgrnam ("testgroup");
  if (g != NULL)
    dump (g);
#endif

}