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/*
* inet6_sr.c This files contains INET6 related route manipulation methods.
*
* Part of net-tools, the Linux base networking tools
*
* 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.
*/
#include "config.h"
#if HAVE_AFINET6
#include <asm/types.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <arpa/nameser.h>
#include <net/if.h>
#include <sys/ioctl.h>
#include <ctype.h>
#include <errno.h>
#include <netdb.h>
#include <resolv.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <net/route.h>
#include "version.h"
#include "net-support.h"
#include "pathnames.h"
#include "intl.h"
#include "net-features.h"
#include "util.h"
extern struct aftype inet6_aftype;
static int skfd = -1;
static int usage(const int rc)
{
FILE *fp = rc ? stderr : stdout;
fprintf(fp, _("Usage: inet6_route [-vF] del Target\n"));
fprintf(fp, _(" inet6_route [-vF] add Target [gw Gw] [metric M] [[dev] If]\n"));
fprintf(fp, _(" inet6_route [-FC] flush NOT supported\n"));
return (rc);
}
static int INET6_setroute(int action, int options, char **args)
{
struct in6_rtmsg rt;
struct ifreq ifr;
struct sockaddr_storage sas;
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&sas;
char target[128], gateway[128] = "NONE";
int metric, prefix_len;
char *devname = NULL;
char *cp;
if (*args == NULL)
return usage(E_OPTERR);
safe_strncpy(target, *args++, sizeof(target));
if (!strcmp(target, "default")) {
prefix_len = 0;
memset(&sas, 0, sizeof(sas));
} else {
if ((cp = strchr(target, '/'))) {
prefix_len = atol(cp + 1);
if ((prefix_len < 0) || (prefix_len > 128))
return usage(E_OPTERR);
*cp = 0;
} else {
prefix_len = 128;
}
if (inet6_aftype.input(1, target, &sas) < 0
&& inet6_aftype.input(0, target, &sas) < 0) {
inet6_aftype.herror(target);
return (1);
}
}
/* Clean out the RTREQ structure. */
memset((char *) &rt, 0, sizeof(struct in6_rtmsg));
memcpy(&rt.rtmsg_dst, sin6->sin6_addr.s6_addr, sizeof(struct in6_addr));
/* Fill in the other fields. */
rt.rtmsg_flags = RTF_UP;
if (prefix_len == 128)
rt.rtmsg_flags |= RTF_HOST;
rt.rtmsg_metric = 1;
rt.rtmsg_dst_len = prefix_len;
while (*args) {
if (!strcmp(*args, "metric")) {
args++;
if (!*args || !isdigit(**args))
return usage(E_OPTERR);
metric = atoi(*args);
rt.rtmsg_metric = metric;
args++;
continue;
}
if (!strcmp(*args, "gw") || !strcmp(*args, "gateway")) {
args++;
if (!*args)
return usage(E_OPTERR);
if (rt.rtmsg_flags & RTF_GATEWAY)
return usage(E_OPTERR);
safe_strncpy(gateway, *args, sizeof(gateway));
if (inet6_aftype.input(1, gateway, &sas) < 0) {
inet6_aftype.herror(gateway);
return (E_LOOKUP);
}
memcpy(&rt.rtmsg_gateway, sin6->sin6_addr.s6_addr,
sizeof(struct in6_addr));
rt.rtmsg_flags |= RTF_GATEWAY;
args++;
continue;
}
if (!strcmp(*args, "mod")) {
args++;
rt.rtmsg_flags |= RTF_MODIFIED;
continue;
}
if (!strcmp(*args, "dyn")) {
args++;
rt.rtmsg_flags |= RTF_DYNAMIC;
continue;
}
if (!strcmp(*args, "device") || !strcmp(*args, "dev")) {
args++;
if (!*args)
return usage(E_OPTERR);
} else if (args[1])
return usage(E_OPTERR);
devname = *args;
args++;
}
/* Create a socket to the INET6 kernel. */
if ((skfd = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
perror("socket");
return (E_SOCK);
}
if (devname) {
memset(&ifr, 0, sizeof(ifr));
safe_strncpy(ifr.ifr_name, devname, sizeof(ifr.ifr_name));
if (ioctl(skfd, SIOGIFINDEX, &ifr) < 0) {
perror("SIOGIFINDEX");
return (E_SOCK);
}
rt.rtmsg_ifindex = ifr.ifr_ifindex;
} else
rt.rtmsg_ifindex = 0;
/* 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 (0);
}
int INET6_rinput(int action, int options, char **args)
{
if (action == RTACTION_FLUSH) {
fprintf(stderr, _("Flushing `inet6' routing table not supported\n"));
return usage(E_OPTERR);
}
if (action == RTACTION_HELP)
return usage(E_USAGE);
return (INET6_setroute(action, options, args));
}
#endif /* HAVE_AFINET6 */
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