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-rw-r--r--route.c452
1 files changed, 0 insertions, 452 deletions
diff --git a/route.c b/route.c
deleted file mode 100644
index ee35331..0000000
--- a/route.c
+++ /dev/null
@@ -1,452 +0,0 @@
-/* route
- *
- * Similar to the standard Unix route, but with only the necessary
- * parts for AF_INET
- *
- * Bjorn Wesen, Axis Communications AB
- *
- * Author of the original route:
- * Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
- * (derived from FvK's 'route.c 1.70 01/04/94')
- *
- * This program is free software; you can redistribute it
- * and/or modify it under the terms of the GNU General
- * Public License as published by the Free Software
- * Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * $Id: route.c,v 1.13 2001/09/05 19:32:00 andersen Exp $
- *
- * displayroute() code added by Vladimir N. Oleynik <dzo@simtreas.ru>
- * adjustments by Larry Doolittle <LRDoolittle@lbl.gov>
- */
-
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-#include <net/route.h>
-#include <linux/param.h> // HZ
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <stdio.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <string.h>
-#include <getopt.h>
-#include <unistd.h>
-#include <ctype.h>
-#include "busybox.h"
-
-#define _(x) x
-
-#define RTACTION_ADD 1
-#define RTACTION_DEL 2
-#define RTACTION_HELP 3
-#define RTACTION_FLUSH 4
-#define RTACTION_SHOW 5
-
-#define E_NOTFOUND 8
-#define E_SOCK 7
-#define E_LOOKUP 6
-#define E_VERSION 5
-#define E_USAGE 4
-#define E_OPTERR 3
-#define E_INTERN 2
-#define E_NOSUPP 1
-
-/* resolve XXX.YYY.ZZZ.QQQ -> binary */
-
-static int
-INET_resolve(char *name, struct sockaddr *sa)
-{
- struct sockaddr_in *s_in = (struct sockaddr_in *)sa;
-
- s_in->sin_family = AF_INET;
- s_in->sin_port = 0;
-
- /* Default is special, meaning 0.0.0.0. */
- if (strcmp(name, "default")==0) {
- s_in->sin_addr.s_addr = INADDR_ANY;
- return 1;
- }
- /* Look to see if it's a dotted quad. */
- if (inet_aton(name, &s_in->sin_addr)) {
- return 0;
- }
- /* guess not.. */
- return -1;
-}
-
-#if defined (SIOCADDRTOLD) || defined (RTF_IRTT) /* route */
-#define HAVE_NEW_ADDRT 1
-#endif
-#ifdef RTF_IRTT /* route */
-#define HAVE_RTF_IRTT 1
-#endif
-#ifdef RTF_REJECT /* route */
-#define HAVE_RTF_REJECT 1
-#endif
-
-#if HAVE_NEW_ADDRT
-#define mask_in_addr(x) (((struct sockaddr_in *)&((x).rt_genmask))->sin_addr.s_addr)
-#define full_mask(x) (x)
-#else
-#define mask_in_addr(x) ((x).rt_genmask)
-#define full_mask(x) (((struct sockaddr_in *)&(x))->sin_addr.s_addr)
-#endif
-
-/* add or delete a route depending on action */
-
-static int
-INET_setroute(int action, int options, char **args)
-{
- struct rtentry rt;
- char target[128], gateway[128] = "NONE", netmask[128] = "default";
- int xflag, isnet;
- int skfd;
-
- xflag = 0;
-
- if (*args == NULL)
- show_usage();
- if (strcmp(*args, "-net")==0) {
- xflag = 1;
- args++;
- } else if (strcmp(*args, "-host")==0) {
- xflag = 2;
- args++;
- }
- safe_strncpy(target, *args++, (sizeof target));
-
- /* Clean out the RTREQ structure. */
- memset((char *) &rt, 0, sizeof(struct rtentry));
-
-
- if ((isnet = INET_resolve(target, &rt.rt_dst)) < 0) {
- error_msg(_("can't resolve %s"), target);
- return EXIT_FAILURE; /* XXX change to E_something */
- }
-
- switch (xflag) {
- case 1:
- isnet = 1;
- break;
-
- case 2:
- isnet = 0;
- break;
-
- default:
- break;
- }
-
- /* Fill in the other fields. */
- rt.rt_flags = (RTF_UP | RTF_HOST);
- if (isnet)
- rt.rt_flags &= ~RTF_HOST;
-
- while (*args) {
- if (strcmp(*args, "metric")==0) {
- int metric;
-
- args++;
- if (!*args || !isdigit(**args))
- show_usage();
- metric = atoi(*args);
-#if HAVE_NEW_ADDRT
- rt.rt_metric = metric + 1;
-#else
- ENOSUPP("inet_setroute", "NEW_ADDRT (metric)"); /* XXX Fixme */
-#endif
- args++;
- continue;
- }
-
- if (strcmp(*args, "netmask")==0) {
- struct sockaddr mask;
-
- args++;
- if (!*args || mask_in_addr(rt))
- show_usage();
- safe_strncpy(netmask, *args, (sizeof netmask));
- if ((isnet = INET_resolve(netmask, &mask)) < 0) {
- error_msg(_("can't resolve netmask %s"), netmask);
- return E_LOOKUP;
- }
- rt.rt_genmask = full_mask(mask);
- args++;
- continue;
- }
-
- if (strcmp(*args, "gw")==0 || strcmp(*args, "gateway")==0) {
- args++;
- if (!*args)
- show_usage();
- if (rt.rt_flags & RTF_GATEWAY)
- show_usage();
- safe_strncpy(gateway, *args, (sizeof gateway));
- if ((isnet = INET_resolve(gateway, &rt.rt_gateway)) < 0) {
- error_msg(_("can't resolve gw %s"), gateway);
- return E_LOOKUP;
- }
- if (isnet) {
- error_msg(
- _("%s: cannot use a NETWORK as gateway!"),
- gateway);
- return E_OPTERR;
- }
- rt.rt_flags |= RTF_GATEWAY;
- args++;
- continue;
- }
-
- if (strcmp(*args, "mss")==0) {
- args++;
- rt.rt_flags |= RTF_MSS;
- if (!*args)
- show_usage();
- rt.rt_mss = atoi(*args);
- args++;
- if (rt.rt_mss < 64 || rt.rt_mss > 32768) {
- error_msg(_("Invalid MSS."));
- return E_OPTERR;
- }
- continue;
- }
-
- if (strcmp(*args, "window")==0) {
- args++;
- if (!*args)
- show_usage();
- rt.rt_flags |= RTF_WINDOW;
- rt.rt_window = atoi(*args);
- args++;
- if (rt.rt_window < 128) {
- error_msg(_("Invalid window."));
- return E_OPTERR;
- }
- continue;
- }
-
- if (strcmp(*args, "irtt")==0) {
- args++;
- if (!*args)
- show_usage();
- args++;
-#if HAVE_RTF_IRTT
- rt.rt_flags |= RTF_IRTT;
- rt.rt_irtt = atoi(*(args - 1));
- rt.rt_irtt *= (HZ / 100); /* FIXME */
-#if 0 /* FIXME: do we need to check anything of this? */
- if (rt.rt_irtt < 1 || rt.rt_irtt > (120 * HZ)) {
- error_msg(_("Invalid initial rtt."));
- return E_OPTERR;
- }
-#endif
-#else
- ENOSUPP("inet_setroute", "RTF_IRTT"); /* XXX Fixme */
-#endif
- continue;
- }
-
- if (strcmp(*args, "reject")==0) {
- args++;
-#if HAVE_RTF_REJECT
- rt.rt_flags |= RTF_REJECT;
-#else
- ENOSUPP("inet_setroute", "RTF_REJECT"); /* XXX Fixme */
-#endif
- continue;
- }
- if (strcmp(*args, "mod")==0) {
- args++;
- rt.rt_flags |= RTF_MODIFIED;
- continue;
- }
- if (strcmp(*args, "dyn")==0) {
- args++;
- rt.rt_flags |= RTF_DYNAMIC;
- continue;
- }
- if (strcmp(*args, "reinstate")==0) {
- args++;
- rt.rt_flags |= RTF_REINSTATE;
- continue;
- }
- if (strcmp(*args, "device")==0 || strcmp(*args, "dev")==0) {
- args++;
- if (rt.rt_dev || *args == NULL)
- show_usage();
- rt.rt_dev = *args++;
- continue;
- }
- /* nothing matches */
- if (!rt.rt_dev) {
- rt.rt_dev = *args++;
- if (*args)
- show_usage(); /* must be last to catch typos */
- } else {
- show_usage();
- }
- }
-
-#if HAVE_RTF_REJECT
- if ((rt.rt_flags & RTF_REJECT) && !rt.rt_dev)
- rt.rt_dev = "lo";
-#endif
-
- /* sanity checks.. */
- if (mask_in_addr(rt)) {
- unsigned long mask = mask_in_addr(rt);
- mask = ~ntohl(mask);
- if ((rt.rt_flags & RTF_HOST) && mask != 0xffffffff) {
- error_msg(
- _("netmask %.8x doesn't make sense with host route"),
- (unsigned int)mask);
- return E_OPTERR;
- }
- if (mask & (mask + 1)) {
- error_msg(_("bogus netmask %s"), netmask);
- return E_OPTERR;
- }
- mask = ((struct sockaddr_in *) &rt.rt_dst)->sin_addr.s_addr;
- if (mask & ~mask_in_addr(rt)) {
- error_msg(_("netmask doesn't match route address"));
- return E_OPTERR;
- }
- }
- /* Fill out netmask if still unset */
- if ((action == RTACTION_ADD) && rt.rt_flags & RTF_HOST)
- mask_in_addr(rt) = 0xffffffff;
-
- /* Create a socket to the INET kernel. */
- if ((skfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
- perror("socket");
- return E_SOCK;
- }
- /* Tell the kernel to accept this route. */
- if (action == RTACTION_DEL) {
- if (ioctl(skfd, SIOCDELRT, &rt) < 0) {
- perror("SIOCDELRT");
- close(skfd);
- return E_SOCK;
- }
- } else {
- if (ioctl(skfd, SIOCADDRT, &rt) < 0) {
- perror("SIOCADDRT");
- close(skfd);
- return E_SOCK;
- }
- }
-
- /* Close the socket. */
- (void) close(skfd);
- return EXIT_SUCCESS;
-}
-
-#ifndef RTF_UP
-/* Keep this in sync with /usr/src/linux/include/linux/route.h */
-#define RTF_UP 0x0001 /* route usable */
-#define RTF_GATEWAY 0x0002 /* destination is a gateway */
-#define RTF_HOST 0x0004 /* host entry (net otherwise) */
-#define RTF_REINSTATE 0x0008 /* reinstate route after tmout */
-#define RTF_DYNAMIC 0x0010 /* created dyn. (by redirect) */
-#define RTF_MODIFIED 0x0020 /* modified dyn. (by redirect) */
-#define RTF_MTU 0x0040 /* specific MTU for this route */
-#ifndef RTF_MSS
-#define RTF_MSS RTF_MTU /* Compatibility :-( */
-#endif
-#define RTF_WINDOW 0x0080 /* per route window clamping */
-#define RTF_IRTT 0x0100 /* Initial round trip time */
-#define RTF_REJECT 0x0200 /* Reject route */
-#endif
-
-static void displayroutes(void)
-{
- char buff[256];
- int nl = 0 ;
- struct in_addr dest;
- struct in_addr gw;
- struct in_addr mask;
- int flgs, ref, use, metric;
- char flags[64];
- unsigned long int d,g,m;
-
- char sdest[16], sgw[16];
-
-
- FILE *fp = xfopen("/proc/net/route", "r");
-
- while( fgets(buff, sizeof(buff), fp) != NULL ) {
- if(nl) {
- int ifl = 0;
- while(buff[ifl]!=' ' && buff[ifl]!='\t' && buff[ifl]!='\0')
- ifl++;
- buff[ifl]=0; /* interface */
- if(sscanf(buff+ifl+1, "%lx%lx%X%d%d%d%lx",
- &d, &g, &flgs, &ref, &use, &metric, &m)!=7) {
- error_msg_and_die( "Unsuported kernel route format\n");
- }
- if(nl==1)
- printf("Kernel IP routing table\n"
- "Destination Gateway Genmask Flags Metric Ref Use Iface\n");
-
- ifl = 0; /* parse flags */
- if(flgs&RTF_UP) {
- if(flgs&RTF_REJECT)
- flags[ifl++]='!';
- else
- flags[ifl++]='U';
- if(flgs&RTF_GATEWAY)
- flags[ifl++]='G';
- if(flgs&RTF_HOST)
- flags[ifl++]='H';
- if(flgs&RTF_REINSTATE)
- flags[ifl++]='R';
- if(flgs&RTF_DYNAMIC)
- flags[ifl++]='D';
- if(flgs&RTF_MODIFIED)
- flags[ifl++]='M';
- flags[ifl]=0;
- dest.s_addr = d;
- gw.s_addr = g;
- mask.s_addr = m;
- strcpy(sdest, (dest.s_addr==0 ? "default" :
- inet_ntoa(dest)));
- strcpy(sgw, (gw.s_addr==0 ? "*" :
- inet_ntoa(gw)));
- printf("%-16s%-16s%-16s%-6s%-6d %-2d %7d %s\n",
- sdest, sgw,
- inet_ntoa(mask),
- flags, metric, ref, use, buff);
- }
- }
- nl++;
- }
-}
-
-int route_main(int argc, char **argv)
-{
- int what = 0;
-
- argc--;
- argv++;
-
- if (*argv == NULL) {
- displayroutes();
- return EXIT_SUCCESS;
- } else {
- /* check verb */
- if (strcmp(*argv, "add")==0)
- what = RTACTION_ADD;
- else if (strcmp(*argv, "del")==0 || strcmp(*argv, "delete")==0)
- what = RTACTION_DEL;
- else if (strcmp(*argv, "flush")==0)
- what = RTACTION_FLUSH;
- else
- show_usage();
- }
-
- return INET_setroute(what, 0, ++argv);
-}
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