usr/src/cmd/bnu/uucpname.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 1995 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  28 /*        All Rights Reserved   */
  29
  30
  31 #pragma ident   "%Z%%M% %I%     %E% SMI"
  32
  33 #include "uucp.h"
  34
  35 /*
  36  * get the uucp name
  37  * return:
  38  *      none
  39  */
  40 void
  41 uucpname(name)
  42 register char *name;
  43 {
  44         char *s;
  45         char NameBuf[MAXBASENAME + 1];
  46         FILE *NameFile;
  47
  48         NameBuf[0] = '\0';
  49         if ((NameFile = fopen(SYSNAMEFILE, "r")) != NULL) {
  50                 if (fscanf(NameFile, "%14s", NameBuf) != 1) {
  51                         (void) fprintf(stderr,
  52                                 gettext("No system name specified in %s\n"),
  53                                 SYSNAMEFILE);
  54                         cleanup(-1);
  55                 }
  56                 s = NameBuf;
  57                 (void) fclose(NameFile);
  58         } else {
  59 #ifdef BSD4_2
  60         char    NameBuf[MAXBASENAME + 1];
  61
  62         gethostname(NameBuf, MAXBASENAME);
  63         /* strip off any domain name part */
  64         if ((s = index(NameBuf, '.')) != NULL)
  65                 *s = '\0';
  66         s = NameBuf;
  67         s[MAXBASENAME] = '\0';
  68 #else /* !BSD4_2 */
  69 #ifdef UNAME
  70         struct utsname utsn;
  71
  72         uname(&utsn);
  73         s = utsn.nodename;
  74 #else /* !UNAME */
  75         char    NameBuf[MAXBASENAME + 1], *strchr();
  76         FILE    *NameFile;
  77
  78         s = MYNAME;
  79         NameBuf[0] = '\0';
  80
  81         if ((NameFile = fopen("/etc/whoami", "r")) != NULL) {
  82                 /* etc/whoami wins */
  83                 (void) fgets(NameBuf, MAXBASENAME + 1, NameFile);
  84                 (void) fclose(NameFile);
  85                 NameBuf[MAXBASENAME] = '\0';
  86                 if (NameBuf[0] != '\0') {
  87                         if ((s = strchr(NameBuf, '\n')) != NULL)
  88                                 *s = '\0';
  89                         s = NameBuf;
  90                 }
  91         }
  92 #endif /* UNAME */
  93 #endif /* BSD4_2 */
  94         }
  95
  96         (void) strncpy(name, s, MAXBASENAME);
  97         name[MAXBASENAME] = '\0';
  98         /* strip off any domain name from the host name */
  99         if ((s = strchr(name, '.')) != NULL)
 100                 *s = '\0';
 101         return;
 102 }