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/*************************************************************************\
*
* Package: MyLib
* File: gdef.c
* Environment: ANSI C
*
* Copyright (c) 2002 Pierre L'Ecuyer, DIRO, Université de Montréal.
* e-mail: lecuyer@iro.umontreal.ca
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted without a fee for private, research,
* academic, or other non-commercial purposes.
* Any use of this software in a commercial environment requires a
* written licence from the copyright owner.
*
* Any changes made to this package must be clearly identified as such.
*
* In scientific publications which used this software, a reference to it
* would be appreciated.
*
* Redistributions of source code must retain this copyright notice
* and the following disclaimer.
*
* THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
\*************************************************************************/
#ifdef HAVE_CONFIG_H
#include "gdefconf.h"
#endif
#include "gdef.h"
#ifdef HAVE_WINDOWS_H
#include <windows.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#ifdef HAVE_SYS_UTSNAME_H
#include <sys/utsname.h>
#else
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#endif
void gdef_GetHostName (char machine[], int n)
{
int j;
#ifdef HAVE_SYS_UTSNAME_H
struct utsname Z;
#else
char *name;
#endif
if (n <= 0 || machine == NULL)
return;
machine[0] = '\0';
#ifdef HAVE_SYS_UTSNAME_H
if (uname(&Z) != -1) {
strncpy (machine, Z.nodename, (size_t) n);
j = strlen (machine);
if (n - j > 2)
strncat (machine, ", ", (size_t) 2);
j = strlen (machine);
if (n - j > 0)
strncat (machine, Z.sysname, (size_t) (n - j));
machine[n - 1] = '\0';
return;
}
#else
#ifdef HAVE_UNISTD_H
gethostname (machine, (size_t) n);
machine[n - 1] = '\0';
return;
#else
name = getenv ("HOST");
if (name != NULL) {
strncpy (machine, name, (size_t) n);
j = strlen (machine);
machine[n - 1] = '\0';
if (j < n - 3) {
machine[j++] = ',';
machine[j++] = ' ';
}
}
name = getenv ("OSTYPE");
if (name != NULL) {
if ((int) strlen (name) < n - j)
strncat (machine, name, (size_t) n - j);
machine[n - 1] = '\0';
}
#endif
#endif
}
/*------------------------------------------------------------------------*/
#define MAXBYTES 255
void gdef_WriteHostName (void)
{
char machine[1 + MAXBYTES] = {'\0'};
gdef_GetHostName (machine, MAXBYTES);
printf ("%s\n", machine);
}
#if 0
int main()
{
struct utsname name;
if (uname(&name) != -1)
printf(" %s\n", name.nodename);
else {
fprintf(stderr, "Can't find system name\n");
return 1;
}
gdef_GetHostName (0, MAXBYTES);
gdef_WriteHostName ();
return 0;
}
#endif
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