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/* Find out who I am & where I am.
Copyright (C) 1994, 1995 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "system.h"
/* Size of buffers holding strings. */
#define STRING_BUFFER_SIZE 64
#include <pwd.h>
/* On Ultrix 2.x, <utsname.h> uses SYS_NMLEN, which is only defined in
<limits.h>. Sigh! */
#ifdef HAVE_UNAME
# ifdef HAVE_LIMITS_H
# include <limits.h>
# endif
# include <sys/utsname.h>
# include <time.h>
#else
# include <sys/time.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifndef _POSIX_VERSION
struct passwd *getpwuid ();
#endif
/*----------------.
| Get user name. |
`----------------*/
static const char *
get_username ()
{
struct passwd *passwd;
passwd = getpwuid (getuid ());
endpwent ();
if (passwd == NULL)
return "???";
return passwd->pw_name;
}
/*------------------------------------------------------.
| Do uname, gethostname, or read file (/etc/systemid). |
`------------------------------------------------------*/
static const char *
get_hostname ()
{
#if HAVE_UNAME
static struct utsname hostname_buffer;
uname (&hostname_buffer);
return hostname_buffer.nodename;
#else
# if HAVE_ETC_SYSTEMID
FILE *fpsid = fopen ("/etc/systemid", "r");
static char buffer[STRING_BUFFER_SIZE];
if (!fpsid)
return "???";
fgets (buffer, sizeof (buffer), fpsid);
fclose (fpsid);
buffer[strlen (buffer) - 1] = 0;
return buffer;
# else
static char hostname_buffer[STRING_BUFFER_SIZE];
gethostname (hostname_buffer, sizeof (hostname_buffer));
return hostname_buffer;
# endif
#endif
}
/*------------------------------------------------------------------.
| Fill BUFFER with a string representing the username and hostname |
| separated by an `@' sign, and return a pointer to the constructed |
| string. If BUFFER is NULL, use an internal buffer instead. |
`------------------------------------------------------------------*/
char *
get_submitter (buffer)
char *buffer;
{
static char static_buffer[STRING_BUFFER_SIZE];
if (!buffer)
buffer = static_buffer;
strcpy (buffer, get_username ());
strcat (buffer, "@");
return strcat (buffer, get_hostname ());
}
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