mirror of
https://github.com/sheumann/hush.git
synced 2024-07-03 15:29:41 +00:00
d921b2ecc0
things like xasprintf() into xfuncs.c, remove xprint_file_by_name() (it only had one user), clean up lots of #includes... General cleanup pass. What I've been doing for the last couple days. And it conflicts! I've removed httpd.c from this checkin due to somebody else touching that file. It builds for me. I have to catch a bus. (Now you know why I'm looking forward to Mercurial.)
114 lines
2.2 KiB
C
114 lines
2.2 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* $Id: hostname.c,v 1.36 2003/07/14 21:21:01 andersen Exp $
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* Mini hostname implementation for busybox
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*
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* Copyright (C) 1999 by Randolph Chung <tausq@debian.org>
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*
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* adjusted by Erik Andersen <andersen@codepoet.org> to remove
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* use of long options and GNU getopt. Improved the usage info.
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*
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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#include "busybox.h"
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#include <getopt.h>
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extern char *optarg; /* in unistd.h */
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extern int optind, opterr, optopt; /* in unistd.h */
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static void do_sethostname(char *s, int isfile)
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{
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FILE *f;
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char buf[255];
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if (!s)
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return;
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if (!isfile) {
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if (sethostname(s, strlen(s)) < 0) {
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if (errno == EPERM)
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bb_error_msg_and_die("you must be root to change the hostname");
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else
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bb_perror_msg_and_die("sethostname");
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}
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} else {
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f = xfopen(s, "r");
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while (fgets(buf, 255, f) != NULL) {
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if (buf[0] =='#') {
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continue;
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}
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chomp(buf);
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do_sethostname(buf, 0);
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}
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#ifdef CONFIG_FEATURE_CLEAN_UP
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fclose(f);
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#endif
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}
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}
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int hostname_main(int argc, char **argv)
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{
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int opt;
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int type = 0;
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struct hostent *hp;
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char *filename = NULL;
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char buf[255];
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char *p = NULL;
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if (argc < 1)
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bb_show_usage();
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while ((opt = getopt(argc, argv, "dfisF:")) > 0) {
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switch (opt) {
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case 'd':
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case 'f':
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case 'i':
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case 's':
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type = opt;
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break;
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case 'F':
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filename = optarg;
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break;
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default:
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bb_show_usage();
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}
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}
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/* Output in desired format */
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if (type != 0) {
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gethostname(buf, 255);
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hp = xgethostbyname(buf);
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p = strchr(hp->h_name, '.');
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if (type == 'f') {
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puts(hp->h_name);
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} else if (type == 's') {
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if (p != NULL) {
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*p = 0;
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}
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puts(hp->h_name);
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} else if (type == 'd') {
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if (p) puts(p + 1);
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} else if (type == 'i') {
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while (hp->h_addr_list[0]) {
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printf("%s ", inet_ntoa(*(struct in_addr *) (*hp->h_addr_list++)));
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}
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printf("\n");
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}
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}
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/* Set the hostname */
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else if (filename != NULL) {
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do_sethostname(filename, 1);
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} else if (optind < argc) {
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do_sethostname(argv[optind], 0);
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}
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/* Or if all else fails,
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* just print the current hostname */
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else {
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gethostname(buf, 255);
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puts(buf);
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}
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return(0);
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}
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