HardenedBSD/eBones/krb/k_gethostname.c

/*
 * Copyright 1987, 1988 by the Massachusetts Institute of Technology.
 * For copying and distribution information, please see the file
 * <Copyright.MIT>.
 *
 *	from: k_gethostname.c,v 4.1 88/12/01 14:04:42 jtkohl Exp $
 *	$Id: k_gethostname.c,v 1.3 1995/07/18 16:38:51 mark Exp $
 */

#if 0
#ifndef lint
static char rcsid[] =
"$Id: k_gethostname.c,v 1.3 1995/07/18 16:38:51 mark Exp $";
#endif /* lint */
#endif

#include <unistd.h>

#ifndef PC
#ifndef BSD42
/* teach me how to k_gethostname for your system here */
#endif
#endif

#ifdef PC
#include <stdio.h>
typedef long in_name;
#include "custom.h"		/* where is this file? */
extern get_custom();
#define LEN 64			/* just a guess */
#endif /* PC */

/*
 * Return the local host's name in "name", up to "namelen" characters.
 * "name" will be null-terminated if "namelen" is big enough.
 * The return code is 0 on success, -1 on failure.  (The calling
 * interface is identical to gethostname(2).)
 *
 * Currently defined for BSD 4.2 and PC.  The BSD version just calls
 * gethostname(); the PC code was taken from "kinit.c", and may or may
 * not work.
 */

int
k_gethostname(name, namelen)
    char *name;
    int namelen;
{
#ifdef BSD42
    return gethostname(name, namelen);
#endif

#ifdef PC
    char buf[LEN];
    char b1, b2, b3, b4;
    register char *ptr;

    get_custom();		/* should check for errors,
				 * return -1 on failure */
    ptr = (char *) &(custom.c_me);
    b1 = *ptr++;
    b2 = *ptr++;
    b3 = *ptr++;
    b4 = *ptr;
    (void) sprintf(buf,"PC address %d.%d.%d.%d",b1,b2,b3,b4);
    if (strlen(buf) > namelen)
        fprintf(stderr, "gethostname: namelen too small; truncating");
    strnpcy(name, buf, namelen);
    return 0;
#endif
}