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NetBSD/usr.sbin/rtadvd/dump.c
roy 83ab565911 Remove the iflist array and store ifflags in rainfo. 
Add support for SIGHUP to re-read the configuration for each interface.
If an invalid configuration is found, we continue to use the old one;
otherwise we expire the current one and then start advertising the new one.

Specififed interfaces don't have to exist at startup.
If specified interfaces arrive, load their config and start advertising.
If they depart, remove their rainfo structure and continue.

Fixes PR/43881 and PR/47311
2012-12-13 15:36:35 +00:00

281 lines
7.9 KiB
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/* $NetBSD: dump.c,v 1.10 2012/12/13 15:36:36 roy Exp $ */
/* $KAME: dump.c,v 1.34 2004/06/14 05:35:59 itojun Exp $ */
/*
* Copyright (C) 2000 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/types.h>
#include <sys/socket.h>
#include <sys/queue.h>
#include <net/if.h>
#include <net/if_dl.h>
#ifdef __FreeBSD__
#include <net/if_var.h>
#endif
#include <netinet/in.h>
/* XXX: the following two are non-standard include files */
#include <netinet6/in6_var.h>
#include <netinet6/nd6.h>
#include <arpa/inet.h>
#include <time.h>
#include <stdio.h>
#include <stdarg.h>
#include <syslog.h>
#include <string.h>
#include <errno.h>
#include <netdb.h>
#include "rtadvd.h"
#include "timer.h"
#include "if.h"
#include "dump.h"
static FILE *fp;
static char *ether_str(struct sockaddr_dl *);
static void if_dump(void);
static const char *rtpref_str[] = {
"medium", /* 00 */
"high", /* 01 */
"rsv", /* 10 */
"low" /* 11 */
};
static char *
ether_str(struct sockaddr_dl *sdl)
{
static char hbuf[NI_MAXHOST];
if (sdl->sdl_alen) {
if (getnameinfo((struct sockaddr *)sdl, sdl->sdl_len,
hbuf, sizeof(hbuf), NULL, 0, NI_NUMERICHOST) != 0)
snprintf(hbuf, sizeof(hbuf), "<invalid>");
} else
snprintf(hbuf, sizeof(hbuf), "NONE");
return(hbuf);
}
static void
if_dump(void)
{
struct rainfo *rai;
struct prefix *pfx;
struct rtinfo *rti;
struct rdnss *rdns;
struct rdnss_addr *rdnsa;
struct dnssl *dnsl;
struct dnssl_domain *dnsd;
char *p, len;
char prefixbuf[INET6_ADDRSTRLEN];
struct timeval now;
gettimeofday(&now, NULL); /* XXX: unused in most cases */
TAILQ_FOREACH(rai, &ralist, next) {
fprintf(fp, "%s:\n", rai->ifname);
fprintf(fp, " Status: %s\n",
(rai->ifflags & IFF_UP) ? "UP" : "DOWN");
/* control information */
if (rai->lastsent.tv_sec) {
/* note that ctime() appends CR by itself */
fprintf(fp, " Last RA sent: %s",
ctime((time_t *)&rai->lastsent.tv_sec));
}
if (rai->timer) {
fprintf(fp, " Next RA will be sent: %s",
ctime((time_t *)&rai->timer->tm.tv_sec));
}
else
fprintf(fp, " RA timer is stopped");
fprintf(fp, " waits: %d, initcount: %d\n",
rai->waiting, rai->initcounter);
/* statistics */
fprintf(fp, " statistics: RA(out/in/inconsistent): "
"%llu/%llu/%llu, ",
(unsigned long long)rai->raoutput,
(unsigned long long)rai->rainput,
(unsigned long long)rai->rainconsistent);
fprintf(fp, "RS(input): %llu\n",
(unsigned long long)rai->rsinput);
/* interface information */
if (rai->advlinkopt)
fprintf(fp, " Link-layer address: %s\n",
ether_str(rai->sdl));
fprintf(fp, " MTU: %d\n", rai->phymtu);
/* Router configuration variables */
fprintf(fp, " DefaultLifetime: %d, MaxAdvInterval: %d, "
"MinAdvInterval: %d\n", rai->lifetime, rai->maxinterval,
rai->mininterval);
fprintf(fp, " Flags: %s%s%s, ",
rai->managedflg ? "M" : "", rai->otherflg ? "O" : "",
"");
fprintf(fp, "Preference: %s, ",
rtpref_str[(rai->rtpref >> 3) & 0xff]);
fprintf(fp, "MTU: %d\n", rai->linkmtu);
fprintf(fp, " ReachableTime: %d, RetransTimer: %d, "
"CurHopLimit: %d\n", rai->reachabletime,
rai->retranstimer, rai->hoplimit);
if (rai->clockskew)
fprintf(fp, " Clock skew: %dsec\n",
rai->clockskew);
TAILQ_FOREACH(pfx, &rai->prefix, next) {
if (pfx == TAILQ_FIRST(&rai->prefix))
fprintf(fp, " Prefixes:\n");
fprintf(fp, " %s/%d(",
inet_ntop(AF_INET6, &pfx->prefix, prefixbuf,
sizeof(prefixbuf)), pfx->prefixlen);
switch (pfx->origin) {
case PREFIX_FROM_KERNEL:
fprintf(fp, "KERNEL, ");
break;
case PREFIX_FROM_CONFIG:
fprintf(fp, "CONFIG, ");
break;
case PREFIX_FROM_DYNAMIC:
fprintf(fp, "DYNAMIC, ");
break;
}
if (pfx->validlifetime == ND6_INFINITE_LIFETIME)
fprintf(fp, "vltime: infinity");
else
fprintf(fp, "vltime: %ld",
(long)pfx->validlifetime);
if (pfx->vltimeexpire != 0)
fprintf(fp, "(decr,expire %lld), ", (long long)
(pfx->vltimeexpire > now.tv_sec ?
pfx->vltimeexpire - now.tv_sec : 0));
else
fprintf(fp, ", ");
if (pfx->preflifetime == ND6_INFINITE_LIFETIME)
fprintf(fp, "pltime: infinity");
else
fprintf(fp, "pltime: %ld",
(long)pfx->preflifetime);
if (pfx->pltimeexpire != 0)
fprintf(fp, "(decr,expire %lld), ", (long long)
(pfx->pltimeexpire > now.tv_sec ?
pfx->pltimeexpire - now.tv_sec : 0));
else
fprintf(fp, ", ");
fprintf(fp, "flags: %s%s%s",
pfx->onlinkflg ? "L" : "",
pfx->autoconfflg ? "A" : "",
"");
if (pfx->timer) {
struct timeval *rest;
rest = rtadvd_timer_rest(pfx->timer);
if (rest) { /* XXX: what if not? */
fprintf(fp, ", expire in: %ld",
(long)rest->tv_sec);
}
}
fprintf(fp, ")\n");
}
TAILQ_FOREACH(rti, &rai->route, next) {
if (rti == TAILQ_FIRST(&rai->route))
fprintf(fp, " Route Information:\n");
fprintf(fp, " %s/%d (",
inet_ntop(AF_INET6, &rti->prefix,
prefixbuf, sizeof(prefixbuf)),
rti->prefixlen);
fprintf(fp, "preference: %s, ",
rtpref_str[0xff & (rti->rtpref >> 3)]);
if (rti->ltime == ND6_INFINITE_LIFETIME)
fprintf(fp, "lifetime: infinity");
else
fprintf(fp, "lifetime: %ld", (long)rti->ltime);
fprintf(fp, ")\n");
}
TAILQ_FOREACH(rdns, &rai->rdnss, next) {
fprintf(fp, " Recursive DNS Servers:\n");
if (rdns->lifetime == ND6_INFINITE_LIFETIME)
fprintf(fp, " lifetime: infinity\n");
else
fprintf(fp, " lifetime: %ld\n",
(long)rdns->lifetime);
TAILQ_FOREACH(rdnsa, &rdns->list, next)
fprintf(fp, " %s\n",
inet_ntop(AF_INET6, &rdnsa->addr,
prefixbuf, sizeof(prefixbuf)));
}
TAILQ_FOREACH(dnsl, &rai->dnssl, next) {
fprintf(fp, " DNS Search List:\n");
if (dnsl->lifetime == ND6_INFINITE_LIFETIME)
fprintf(fp, " lifetime: infinity\n");
else
fprintf(fp, " lifetime: %ld\n",
(long)dnsl->lifetime);
TAILQ_FOREACH(dnsd, &dnsl->list, next) {
fprintf(fp, " ");
for (p = dnsd->domain, len = *p++;
len != 0;
len = *p++)
{
if (p != dnsd->domain)
fputc('.', fp);
while(len-- != 0)
fputc(*p++, fp);
}
fputc('\n', fp);
}
}
}
}
void
rtadvd_dump_file(const char *dumpfile)
{
syslog(LOG_DEBUG, "<%s> dump current status to %s", __func__,
dumpfile);
if ((fp = fopen(dumpfile, "w")) == NULL) {
syslog(LOG_WARNING, "<%s> open a dump file(%s)",
__func__, dumpfile);
return;
}
if_dump();
fclose(fp);
}
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