sbin/rtsol now shares source code with usr.sbin/rtsold.

sbin/rtsol is compiled separately for static linkage.
This commit is contained in:
itojun 1999-09-03 05:25:43 +00:00
parent 296a348313
commit 8ce82eb757
4 changed files with 11 additions and 583 deletions

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@ -1,10 +1,16 @@
# $NetBSD: Makefile,v 1.1 1999/07/02 08:28:04 itojun Exp $
# $NetBSD: Makefile,v 1.2 1999/09/03 05:25:44 itojun Exp $
PROG= rtsol
SRCS= rtsold.c rtsol.c if.c probe.c
CPPFLAGS+=-DADVAPI=1
CPPFLAGS+=-DINET6
MAN= rtsol.8
LDADD+= -lkvm
DPADD+= ${LIBKVM}
#MAN= rtsold.8
NOMAN= yes
.PATH: ${.CURDIR}/../../usr.sbin/rtsold
.include <bsd.prog.mk>

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@ -1,96 +0,0 @@
.\" Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. Neither the name of the project nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" $NetBSD: rtsol.8,v 1.2 1999/07/04 02:43:39 itojun Exp $
.\" KAME Id: rtsol.8,v 1.1.2.5.2.2.4.2 1999/05/02 13:18:43 itojun Exp
.\"
.Dd May 17, 1998
.Dt RTSOL 8
.Os
.\"
.Sh NAME
.Nm rtsol
.Nd send router solicitation
.\"
.Sh SYNOPSIS
.Nm
.Op Fl nv
.Ar interface
.\"
.Sh DESCRIPTION
.Nm Rtsol
sends router solicitation packet to the specified
.Ar interface .
If there is any router on the network, the router may respond by
router advertisement packet.
Router advertisement packet contains information about the network,
the link-local address of the router, and so forth.
The kernel will install the new routing information and address prefix
for the
.Ar interface ,
according to the information.
.Pp
.Nm
implements some quickhack code for notebook computers.
.Fl n
disables the behavior
.Pq the flag stands for no tricks .
.Pp
If
.Fl v
is specified,
.Nm
will generate more messages.
This is mostly for debugging.
.Pp
Router advertisement packet will be processed only if the
node is configured as a host, not a router.
To accept router advertisement packet,
.Xr sysctl 8
variables must be set as follows:
.Bd -literal -offset
# sysctl -w net.inet6.ip6.forwarding=0
# sysctl -w net.inet6.ip6.accept_rtadv=1
.Ed
.Pp
Typically this is done in system startup scripts, such as
.Xr rc 8 .
.\"
.Sh RETURN VALUES
The program exits with 0 on success, non-zero on failures.
.\"
.Sh SEE ALSO
.Xr rtadvd 8 ,
.Xr rtsold 8 ,
.Xr sysctl 8
.\"
.Sh HISTORY
The
.Nm
command first appeared in WIDE Hydrangea IPv6 protocol stack kit.
.\" .Sh BUGS
.\" (to be written)

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@ -1,483 +0,0 @@
/* $NetBSD: rtsol.c,v 1.3 1999/07/29 09:57:58 itojun Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/socket.h>
#ifdef ADVAPI
#include <sys/uio.h>
#endif
#include <sys/ioctl.h>
#include <net/if.h>
#if defined(__FreeBSD__) && __FreeBSD__ >= 3
#include <net/if_var.h>
#endif /* __FreeBSD__ >= 3 */
#include <netinet/in.h>
#include <netinet/ip6.h>
#include <netinet/icmp6.h>
#include <unistd.h>
#include <stdio.h>
#include <err.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/sysctl.h>
#include <netdb.h>
#include <netinet6/in6.h>
#include <netinet6/in6_var.h>
#include <netinet6/nd6.h>
#define ALLROUTER "ff02::2"
int main __P((int, char **));
void usage __P((void));
int sendit __P((int, char *, int, struct sockaddr_in6 *, int));
int interface_down __P((char *));
int interface_up __P((char *));
static int getifflag6 __P((char *, int *));
static int getinet6sysctl __P((int));
static int trick = 1;
static int verbose = 0;
#define vmsg(x) { if (verbose) fprintf x; }
extern char *optarg;
extern int optind;
int
main(argc, argv)
int argc;
char *argv[];
{
struct sockaddr_in6 to;
struct icmp6_hdr *icp;
u_int hlim = 255;
u_char outpack[sizeof(struct icmp6_hdr)];
u_short index;
int s, i, cc = sizeof(struct icmp6_hdr);
int opt;
fd_set fdset;
struct timeval timeout;
int rtsol_retry = MAX_RTR_SOLICITATIONS;
long rdelay;
srandom((unsigned)time(NULL));
while ((opt = getopt(argc, argv, "nv")) != EOF) {
switch (opt) {
case 'n':
trick = 0;
break;
case 'v':
verbose++;
break;
default:
usage();
/*NOTREACHED*/
}
}
argc -= optind;
argv += optind;
if (argc != 1) {
usage();
/*NOTREACHED*/
}
index = (u_short)if_nametoindex(argv[0]);
if (index == 0) {
errx(1, "invalid interface %s", argv[0]);
/*NOTREACHED*/
}
if (!getinet6sysctl(IPV6CTL_ACCEPT_RTADV))
warnx("kernel is configured not to accept RAs");
if (trick) {
/*
* Notebook hack:
* It looks that, most of the pccard drivers do not reset
* multicast packet filter properly on suspend/resume session.
* bring interface down, then up, to initialize it properly.
*/
if (interface_down(argv[0]) < 0)
err(1, "interface state could not be changed");
vmsg((stderr, "a bit of delay...\n"));
usleep(500 * 1000); /* 0.5s */
}
if (interface_up(argv[0]) < 0)
err(1, "interface not ready");
{
struct addrinfo hints, *res;
int error;
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET6;
error = getaddrinfo(ALLROUTER, NULL, &hints, &res);
if (error) {
errx(1, "getaddrinfo: %s", gai_strerror(error));
/*NOTREACHED*/
}
memcpy(&to, res->ai_addr, res->ai_addrlen);
}
if ((s = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6)) < 0)
err(1, "socket");
if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &hlim,
sizeof(hlim)) == -1)
err(1, "setsockopt(IPV6_MULTICAST_HOPS)");
#ifdef ICMP6_FILTER
{
struct icmp6_filter filt;
ICMP6_FILTER_SETBLOCKALL(&filt);
ICMP6_FILTER_SETPASS(ND_ROUTER_ADVERT, &filt);
if (setsockopt(s, IPPROTO_ICMPV6, ICMP6_FILTER, &filt,
sizeof(filt)) == -1)
err(1, "setsockopt(ICMP6_FILTER)");
}
#endif
/* fill ICMP header */
icp = (struct icmp6_hdr *)outpack;
icp->icmp6_type = ND_ROUTER_SOLICIT;
icp->icmp6_code = 0;
icp->icmp6_cksum = 0;
icp->icmp6_data32[0] = 0; /* RS reserved field */
vmsg((stderr, "sending RS for %d time%s:\n",
rtsol_retry, (1 < rtsol_retry) ? "s" : ""));
rdelay = random() % ((long)MAX_RTR_SOLICITATION_DELAY * 1000);
vmsg((stderr, "sleep %ldmsec before sending the first one\n", rdelay));
if (rdelay / 1000 > 0)
sleep(rdelay / 1000);
usleep(rdelay % 1000);
retry:
vmsg((stderr, "%d, interval=%dsec\r", rtsol_retry,
RTR_SOLICITATION_INTERVAL));
i = sendit(s, (char *)outpack, cc, &to, index);
if (i < 0) {
err(1, "rtsol: solicitation");
/*NOTREACHED*/
} else if (i != cc) {
fprintf(stderr, "rtsol: short write (wrote %d of be %d)\n",
i, cc);
}
FD_ZERO(&fdset);
FD_SET(s, &fdset);
timeout.tv_sec = RTR_SOLICITATION_INTERVAL;
timeout.tv_usec = 0;
if (select(s + 1, &fdset, NULL, NULL, &timeout) < 1) {
if (0 < --rtsol_retry)
goto retry;
} else {
vmsg((stderr, "\ngot a RA packet\n"));
}
close(s);
exit(0);
/*NOTREACHED*/
}
void
usage()
{
(void)fprintf(stderr, "usage: rtsol [-nv] ifname\n");
exit(1);
/*NOTREACHED*/
}
int
sendit(s, p, len, sock, ifindex)
int s;
char *p;
int len;
struct sockaddr_in6 *sock;
int ifindex;
{
#ifndef ADVAPI
sock->sin6_addr.u6_addr.u6_addr16[1] = htons(ifindex);
return sendto(s, p, len, 0, (struct sockaddr *)sock, sock->sin6_len);
#else
struct msghdr m;
struct cmsghdr *cm;
struct iovec iov[2];
u_char cmsgbuf[256];
struct in6_pktinfo *pi;
m.msg_name = (caddr_t)sock;
m.msg_namelen = sock->sin6_len;
iov[0].iov_base = p;
iov[0].iov_len = len;
m.msg_iov = iov;
m.msg_iovlen = 1;
if (!ifindex) {
m.msg_control = NULL;
m.msg_controllen = 0;
} else {
memset(cmsgbuf, 0, sizeof(cmsgbuf));
cm = (struct cmsghdr *)cmsgbuf;
m.msg_control = (caddr_t)cm;
m.msg_controllen = CMSG_SPACE(sizeof(struct in6_pktinfo));
cm->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
cm->cmsg_level = IPPROTO_IPV6;
cm->cmsg_type = IPV6_PKTINFO;
pi = (struct in6_pktinfo *)CMSG_DATA(cm);
memset(&pi->ipi6_addr, 0, sizeof(pi->ipi6_addr)); /*XXX*/
pi->ipi6_ifindex = ifindex;
}
return sendmsg(s, &m, 0);
#endif
}
int
interface_down(name)
char *name;
{
int s;
struct ifreq ifr;
vmsg((stderr, "make interface %s down.\n", name));
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
err(1, "socket");
/*NOTREACHED*/
}
strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0)
perror("ioctl(SIOCGIFFLAGS)");
ifr.ifr_flags &= ~IFF_UP;
if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&ifr) < 0)
perror("ioctl(SIOCSIFFLAGS)");
close(s);
return 0;
}
int
interface_up(name)
char *name;
{
int s;
struct ifreq ifr;
int flag6;
int retry;
int wasup;
vmsg((stderr, "make interface %s up.\n", name));
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
err(1, "socket");
/*NOTREACHED*/
}
strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0)
perror("ioctl(SIOCGIFFLAGS)");
if (ifr.ifr_flags & IFF_UP)
wasup = 1;
else {
wasup = 0;
ifr.ifr_flags |= IFF_UP;
if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&ifr) < 0)
perror("ioctl(SIOCSIFFLAGS)");
}
close(s);
retry = getinet6sysctl(IPV6CTL_DAD_COUNT);
if (retry < 0) {
retry = 10;
vmsg((stderr, "invalid dad count; setting retry to %d\n",
retry));
} else {
vmsg((stderr, "dad count is %d\n", retry));
if (!wasup)
retry += MAX_RTR_SOLICITATIONS;
retry += 2; /* to make sure */
}
vmsg((stderr, "checking if %s is ready...\n", name));
while (0 < retry--) {
if (getifflag6(name, &flag6) < 0) {
vmsg((stderr, "getifflag6() failed, anyway I'll try\n"));
return 0;
}
if (verbose) {
fprintf(stderr, "%s:", name);
if (!(flag6 & IN6_IFF_NOTREADY))
fprintf(stderr, " ready\n");
else {
if (flag6 & IN6_IFF_TENTATIVE)
fprintf(stderr, " tentative");
if (flag6 & IN6_IFF_DUPLICATED)
fprintf(stderr, " duplicatd");
fprintf(stderr, "\n");
}
}
if (flag6 & IN6_IFF_DUPLICATED)
break;
if (!(flag6 & IN6_IFF_NOTREADY))
return 0;
sleep(1);
}
fprintf(stderr, "DAD for if %s is in strange state\n", name);
return -1;
}
/*------------------------------------------------------------*/
static int
getifflag6(name, flag6)
char *name;
int *flag6;
{
int s;
struct sockaddr_in6 *sin6;
#ifndef SIOCGLIFADDR
int error;
char buf[BUFSIZ];
int i;
struct ifreq *ifr;
struct in6_ifreq ifr6;
struct ifconf ifc;
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
err(1, "socket");
/*NOTREACHED*/
}
ifc.ifc_len = sizeof(buf);
ifc.ifc_buf = buf;
if (ioctl(s, SIOCGIFCONF, &ifc) < 0) {
err(1, "ioctl(SIOCGIFCONF)");
/*NOTREACHED*/
}
error = -1;
for (i = 0; i < ifc.ifc_len; ) {
ifr = (struct ifreq *)((caddr_t)ifc.ifc_req + i);
i += sizeof(ifr->ifr_name) +
(ifr->ifr_addr.sa_len > sizeof(struct sockaddr)
? ifr->ifr_addr.sa_len
: sizeof(struct sockaddr));
if (strncmp(name, ifr->ifr_name, sizeof(ifr->ifr_name)) != 0)
continue;
if (ifr->ifr_addr.sa_family != AF_INET6)
continue;
sin6 = (struct sockaddr_in6 *)&ifr->ifr_addr;
if (!IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr))
continue;
if (verbose) {
char addrbuf[BUFSIZ];
getnameinfo((struct sockaddr *)sin6, sin6->sin6_len,
addrbuf, sizeof(addrbuf), NULL, 0,
NI_NUMERICHOST);
fprintf(stderr, "getting flags6 for if %s addr %s\n",
ifr->ifr_name, addrbuf);
}
strcpy(ifr6.ifr_name, name);
memcpy(&ifr6.ifr_ifru.ifru_addr, &ifr->ifr_addr,
ifr->ifr_addr.sa_len);
if (ioctl(s, SIOCGIFAFLAG_IN6, &ifr6) < 0) {
err(1, "ioctl(SIOCGIFAFLAG_IN6)");
/*NOTREACHED*/
}
error = 0;
if (flag6)
*flag6 = ifr6.ifr_ifru.ifru_flags6;
break;
}
if (error < 0 && verbose)
fprintf(stderr, "getifflags6: no matches\n");
close(s);
return error;
#else
struct if_laddrreq iflr;
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
err(1, "socket");
/*NOTREACHED*/
}
/* perform prefix match on SIOCGLIFADDR */
memset(&iflr, 0, sizeof(iflr));
strcpy(iflr.iflr_name, name);
iflr.prefixlen = 16;
iflr.flags = IFLR_PREFIX;
sin6 = (struct sockaddr_in6 *)&iflr.addr;
sin6->sin6_family = AF_INET6;
sin6->sin6_len = sizeof(*sin6);
sin6->sin6_addr.s6_addr16[0] = htons(0xfe80); /*XXX hardcode*/
if (ioctl(s, SIOCGLIFADDR, &iflr) < 0) {
if (errno == EADDRNOTAVAIL) /*no match - portability?*/
return -1;
err(1, "ioctl(SIOCGLIFADDR)");
/*NOTREACHED*/
}
if (verbose) {
char addrbuf[BUFSIZ];
getnameinfo((struct sockaddr *)sin6, sin6->sin6_len,
addrbuf, sizeof(addrbuf), NULL, 0,
NI_NUMERICHOST);
fprintf(stderr, "got flags6 for if %s addr %s=0x%08x\n",
iflr.iflr_name, addrbuf, iflr.flags);
}
if (flag6)
*flag6 = iflr.flags;
close(s);
return 0;
#endif
}
static int
getinet6sysctl(code)
int code;
{
int mib[] = { CTL_NET, PF_INET6, IPPROTO_IPV6, 0 };
int value;
size_t size;
mib[3] = code;
size = sizeof(value);
if (sysctl(mib, sizeof(mib)/sizeof(mib[0]), &value, &size, NULL, 0) < 0)
return -1;
else
return value;
}

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@ -1,4 +1,4 @@
# $NetBSD: Makefile,v 1.1 1999/09/03 05:14:37 itojun Exp $
# $NetBSD: Makefile,v 1.2 1999/09/03 05:25:43 itojun Exp $
PROG= rtsold
SRCS= rtsold.c rtsol.c if.c probe.c
@ -9,5 +9,6 @@ LDADD+= -lkvm
DPADD+= ${LIBKVM}
MAN= rtsold.8
MLINKS= rtsold.8 rtsol.8
.include <bsd.prog.mk>