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#if !defined(lint) && !defined(DOS)
static char rcsid[] = "$Id: hostname.c 1176 2008-09-29 21:16:42Z hubert@u.washington.edu $";
#endif
/*
* ========================================================================
* Copyright 2013-2021 Eduardo Chappa
* Copyright 2008 University of Washington
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* ========================================================================
*/
#include <system.h>
#if HAVE_GETHOSTNAME
#elif HAVE_UNAME
#include <sys/utsname.h>
#elif defined(SYSTEMID)
#elif defined(XENIX)
#endif
#include "hostname.h"
/*----------------------------------------------------------------------
Call system gethostname
Args: hostname -- buffer to return host name in
size -- Size of buffer hostname is to be returned in
Result: returns 0 if the hostname is correctly set,
-1 if not (and errno is set).
----*/
int
hostname(char *hostname, int size)
{
#if HAVE_GETHOSTNAME
if (gethostname(hostname, size))
return -1;
/* sanity check of hostname string */
for (*dn = hname; (*dn > 0x20) && (*dn < 0x7f); ++dn)
;
if (*dn) /* non-ascii in hostname */
strncpy(hostname, "unknown", size-1);
hostname[size - 1] = '\0';
return 0;
#elif HAVE_UNAME
/** This routine compliments of Scott McGregor at the HP
Corporate Computing Center **/
int uname(struct utsname *);
struct utsname name;
(void)uname(&name);
(void)strncpy(hostname,name.nodename,size-1);
hostname[size - 1] = '\0';
return 0;
#elif defined(SYSTEMID)
char buf[32];
FILE *fp;
char *p;
if ((fp = our_fopen("/etc/systemid", "rb")) != 0) {
fgets(buf, sizeof(buf) - 1, fp);
fclose(fp);
if ((p = strindex(buf, '\n')) != NULL)
*p = '\0';
(void) strncpy(hostname, buf, size - 1);
hostname[size - 1] = '\0';
return 0;
}
#elif defined(XENIX)
#ifdef DOUNAME
/** This routine compliments of Scott McGregor at the HP
Corporate Computing Center **/
int uname();
struct utsname name;
(void) uname(&name);
(void) strncpy(hostname,name.nodename,size-1);
#else
(void) strncpy(hostname, HOSTNAME, size-1);
#endif /* DOUNAME */
hostname[size - 1] = '\0';
return 0;
#else
/* We shouldn't get here except for the windows
* case, which currently doesn't use this (as
* it appears nothing else does as well)
*/
return -1;
#endif
}
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