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aebd88ef8d
When displaying usage output in response to the user requesting it (e.g. using -h/--help), make sure we write the output to stdout and we exit(0). When displaying output in response to an error (e.g. an invalid option or argument), make sure we write the output to stdout and exit non-zero. This brings us in line with standard utilities out there. URL: https://bugs.gentoo.org/655942 Signed-off-by: Mike Frysinger <vapier@gentoo.org>
152 lines
3.5 KiB
C
152 lines
3.5 KiB
C
/*
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* lib/x25_sr.c This file contains an implementation of the "X.25"
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* route change support functions.
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*
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* Author: Stephane Fillod, <sfillod@charybde.gyptis.frmug.org>
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* based on inet_sr.c
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*
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* This program is free software; you can redistribute it
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* and/or modify it under the terms of the GNU General
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* Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*/
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#include "config.h"
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#if HAVE_AFX25
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#include <asm/types.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <linux/x25.h>
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#include <ctype.h>
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#include <errno.h>
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#include <netdb.h>
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#include <resolv.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <unistd.h>
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#include "version.h"
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#include "net-support.h"
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#include "pathnames.h"
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#define EXTERN
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#if 0
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#include "net-locale.h"
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#endif
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#include "intl.h"
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#include "util.h"
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#include "net-features.h"
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extern struct aftype x25_aftype;
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static int skfd = -1;
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static int usage(const int rc)
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{
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FILE *fp = rc ? stderr : stdout;
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fprintf(fp, "Usage: x25_route [-v] del Target[/mask] [dev] If\n");
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fprintf(fp, " x25_route [-v] add Target[/mask] [dev] If\n");
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return(rc);
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}
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static int X25_setroute(int action, int options, char **args)
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{
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struct x25_route_struct rt;
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struct sockaddr_storage sas;
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struct sockaddr_x25 *sx25 = (struct sockaddr_x25 *)&sas;
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char target[128];
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signed int sigdigits;
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if (*args == NULL)
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return usage(E_OPTERR);
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safe_strncpy(target, *args++, sizeof(target));
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/* Clean out the x25_route_struct structure. */
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memset((char *) &rt, 0, sizeof(rt));
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if ((sigdigits = x25_aftype.input(0, target, &sas)) < 0) {
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x25_aftype.herror(target);
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return (E_LOOKUP);
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}
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rt.sigdigits=sigdigits;
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/* this works with 2.4 and 2.6 headers struct x25_address vs. typedef */
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memcpy(&rt.address, &sx25->sx25_addr, sizeof(sx25->sx25_addr));
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while (*args) {
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if (!strcmp(*args,"device") || !strcmp(*args,"dev")) {
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args++;
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if (!*args)
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return usage(E_OPTERR);
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} else
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if (args[1])
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return usage(E_OPTERR);
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if (rt.device[0])
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return usage(E_OPTERR);
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safe_strncpy(rt.device, *args, sizeof(rt.device));
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args++;
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}
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if (rt.device[0]=='\0')
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return usage(E_OPTERR);
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/* sanity checks.. */
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if (rt.sigdigits > 15) {
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fprintf(stderr, _("route: bogus netmask %d\n"), rt.sigdigits);
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return usage(E_OPTERR);
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}
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if (rt.sigdigits > strlen(rt.address.x25_addr)) {
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fprintf(stderr, _("route: netmask doesn't match route address\n"));
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return usage(E_OPTERR);
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}
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/* Create a socket to the X25 kernel. */
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if ((skfd = socket(AF_X25, SOCK_SEQPACKET, 0)) < 0) {
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perror("socket");
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return(E_SOCK);
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}
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/* Tell the kernel to accept this route. */
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if (action==RTACTION_DEL) {
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if (ioctl(skfd, SIOCDELRT, &rt) < 0) {
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perror("SIOCDELRT");
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close(skfd);
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return(E_SOCK);
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}
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} else {
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if (ioctl(skfd, SIOCADDRT, &rt) < 0) {
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perror("SIOCADDRT");
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close(skfd);
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return(E_SOCK);
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}
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}
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/* Close the socket. */
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(void) close(skfd);
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return(0);
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}
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int X25_rinput(int action, int options, char **args)
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{
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if (action == RTACTION_FLUSH) {
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fprintf(stderr,"Flushing `x25' routing table not supported\n");
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return usage(E_OPTERR);
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}
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if (options & FLAG_CACHE) {
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fprintf(stderr,"Modifying `x25' routing cache not supported\n");
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return usage(E_OPTERR);
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}
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if (action == RTACTION_HELP)
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return usage(E_USAGE);
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return(X25_setroute(action, options, args));
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}
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#endif /* HAVE_AFX25 */
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