/*
- * Copyright (c) 2009 Apple Inc. All rights reserved.
+ * Copyright (c) 2009-2020 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
-/* $KAME: config.c,v 1.37 2001/05/25 07:34:00 itojun Exp $ */
+/* $KAME: config.c,v 1.84 2003/08/05 12:34:23 itojun Exp $ */
/*
* Copyright (C) 1998 WIDE Project.
+ * Copyright (C) 2011 Hiroki Sato <hrs@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* 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.
- *
- * $FreeBSD: src/usr.sbin/rtadvd/config.c,v 1.3.2.3 2001/07/03 11:02:14 ume Exp $
*/
#include <sys/param.h>
#include <sys/sysctl.h>
#include <net/if.h>
-#if defined(__FreeBSD__) && __FreeBSD__ >= 3
#include <net/if_var.h>
-#endif /* __FreeBSD__ >= 3 */
#include <net/route.h>
#include <net/if_dl.h>
#include <netinet/ip6.h>
#include <netinet6/ip6_var.h>
#include <netinet/icmp6.h>
-#ifdef MIP6
-#include <netinet6/mip6.h>
-#endif
+#include <netinet6/nd6.h>
#include <arpa/inet.h>
#include <stdio.h>
-#include <syslog.h>
#include <errno.h>
#include <string.h>
-#include <stdlib.h>
-#if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__)
#include <search.h>
-#endif
+#include <stdlib.h>
#include <unistd.h>
#include <ifaddrs.h>
+#include <stddef.h>
#include "rtadvd.h"
#include "advcap.h"
#include "if.h"
#include "config.h"
-static void makeentry (char *, size_t, int, char *, int);
-static void get_prefix (struct rainfo *);
-static int getinet6sysctl (int);
-
+static time_t prefix_timo = (60 * 120); /* 2 hours.
+ * XXX: should be configurable. */
extern struct rainfo *ralist;
+static struct rtadvd_timer *prefix_timeout(void *);
+static void makeentry(char *, size_t, int, char *);
+static int getinet6sysctl(int);
+static int encode_domain(char *, u_char *);
+
void
-getconfig(char *intface)
+getconfig(intface)
+ char *intface;
{
- int stat, pfxs, i;
+ int stat, i;
int rdnss_length;
+ int dnssl_length;
char tbuf[BUFSIZ];
- struct rainfo *tmp;
+ struct rainfo *rai;
long val;
- long long val64;
+ int64_t val64;
char buf[BUFSIZ];
char *bp = buf;
- char *addr;
+ char *addr, *flagstr;
+ char *capport;
static int forwarding = -1;
#define MUSTHAVE(var, cap) \
do { \
- int t; \
+ int64_t t; \
if ((t = agetnum(cap)) < 0) { \
fprintf(stderr, "rtadvd: need %s for interface %s\n", \
cap, intface); \
if ((stat = agetent(tbuf, intface)) <= 0) {
memset(tbuf, 0, sizeof(tbuf));
- syslog(LOG_INFO,
- "<%s> %s isn't defined in the configuration file"
+ errorlog("<%s> %s isn't defined in the configuration file"
" or the configuration file doesn't exist."
" Treat it as default",
- __FUNCTION__, intface);
+ __func__, intface);
}
- tmp = (struct rainfo *)malloc(sizeof(*ralist));
- memset(tmp, 0, sizeof(*tmp));
- tmp->prefix.next = tmp->prefix.prev = &tmp->prefix;
- tmp->route.next = tmp->route.prev = &tmp->route;
- tmp->rdnss_list.next = tmp->rdnss_list.prev = &tmp->rdnss_list;
+ ELM_MALLOC(rai, exit(1));
+ rai->prefix.next = rai->prefix.prev = &rai->prefix;
+#ifdef ROUTEINFO
+ rai->route.next = rai->route.prev = &rai->route;
+#endif
+ rai->rdnss_list.next = rai->rdnss_list.prev = &rai->rdnss_list;
+ rai->dnssl_list.next = rai->dnssl_list.prev = &rai->dnssl_list;
/* check if we are allowed to forward packets (if not determined) */
if (forwarding < 0) {
/* get interface information */
if (agetflag("nolladdr"))
- tmp->advlinkopt = 0;
+ rai->advlinkopt = 0;
else
- tmp->advlinkopt = 1;
- if (tmp->advlinkopt) {
- if ((tmp->sdl = if_nametosdl(intface)) == NULL) {
- syslog(LOG_ERR,
- "<%s> can't get information of %s",
- __FUNCTION__, intface);
+ rai->advlinkopt = 1;
+ if (rai->advlinkopt) {
+ if ((rai->sdl = if_nametosdl(intface)) == NULL) {
+ errorlog("<%s> can't get information of %s",
+ __func__, intface);
exit(1);
}
- tmp->ifindex = tmp->sdl->sdl_index;
+ rai->ifindex = rai->sdl->sdl_index;
} else
- tmp->ifindex = if_nametoindex(intface);
- strncpy(tmp->ifname, intface, sizeof(tmp->ifname));
- if ((tmp->phymtu = if_getmtu(intface)) == 0) {
- tmp->phymtu = IPV6_MMTU;
- syslog(LOG_WARNING,
- "<%s> can't get interface mtu of %s. Treat as %d",
- __FUNCTION__, intface, IPV6_MMTU);
+ rai->ifindex = if_nametoindex(intface);
+ strlcpy(rai->ifname, intface, sizeof(rai->ifname));
+ if ((rai->phymtu = if_getmtu(intface)) == 0) {
+ rai->phymtu = IPV6_MMTU;
+ errorlog("<%s> can't get interface mtu of %s. Treat as %d",
+ __func__, intface, IPV6_MMTU);
}
/*
*/
MAYHAVE(val, "maxinterval", DEF_MAXRTRADVINTERVAL);
if (val < MIN_MAXINTERVAL || val > MAX_MAXINTERVAL) {
- syslog(LOG_ERR,
- "<%s> maxinterval must be between %e and %u",
- __FUNCTION__, MIN_MAXINTERVAL, MAX_MAXINTERVAL);
+ errorlog("<%s> maxinterval (%ld) on %s is invalid "
+ "(must be between %u and %u)", __func__, val,
+ intface, MIN_MAXINTERVAL, MAX_MAXINTERVAL);
exit(1);
}
- tmp->maxinterval = (u_int)val;
- MAYHAVE(val, "mininterval", tmp->maxinterval/3);
- if (val < MIN_MININTERVAL || val > (tmp->maxinterval * 3) / 4) {
- syslog(LOG_ERR,
- "<%s> mininterval must be between %e and %d",
- __FUNCTION__,
- MIN_MININTERVAL,
- (tmp->maxinterval * 3) / 4);
+ rai->maxinterval = (u_int)val;
+ MAYHAVE(val, "mininterval", rai->maxinterval/3);
+ if (val < MIN_MININTERVAL || val > (rai->maxinterval * 3) / 4) {
+ errorlog("<%s> mininterval (%ld) on %s is invalid "
+ "(must be between %d and %d)",
+ __func__, val, intface, MIN_MININTERVAL,
+ (rai->maxinterval * 3) / 4);
exit(1);
}
- tmp->mininterval = (u_int)val;
+ rai->mininterval = (u_int)val;
MAYHAVE(val, "chlim", DEF_ADVCURHOPLIMIT);
- tmp->hoplimit = val & 0xff;
-
- MAYHAVE(val, "raflags", 0);
- tmp->managedflg = val & ND_RA_FLAG_MANAGED;
- tmp->otherflg = val & ND_RA_FLAG_OTHER;
-#ifdef MIP6
- if (mobileip6)
- tmp->haflg = val & ND_RA_FLAG_HA;
-#endif
+ rai->hoplimit = val & 0xff;
+
+ if ((flagstr = (char *)agetstr("raflags", &bp))) {
+ val = 0;
+ if (strchr(flagstr, 'm'))
+ val |= ND_RA_FLAG_MANAGED;
+ if (strchr(flagstr, 'o'))
+ val |= ND_RA_FLAG_OTHER;
+ if (strchr(flagstr, 'h'))
+ val |= ND_RA_FLAG_RTPREF_HIGH;
+ if (strchr(flagstr, 'l')) {
+ if ((val & ND_RA_FLAG_RTPREF_HIGH)) {
+ errorlog("<%s> the \'h\' and \'l\'"
+ " router flags are exclusive", __func__);
+ exit(1);
+ }
+ val |= ND_RA_FLAG_RTPREF_LOW;
+ }
+ } else {
+ MAYHAVE(val, "raflags", 0);
+ }
+ rai->managedflg = val & ND_RA_FLAG_MANAGED;
+ rai->otherflg = val & ND_RA_FLAG_OTHER;
#ifndef ND_RA_FLAG_RTPREF_MASK
#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */
#define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */
#endif
- tmp->rtpref = val & ND_RA_FLAG_RTPREF_MASK;
- if (tmp->rtpref == ND_RA_FLAG_RTPREF_RSV) {
- syslog(LOG_ERR, "<%s> invalid router preference on %s",
- __FUNCTION__, intface);
+ rai->rtpref = val & ND_RA_FLAG_RTPREF_MASK;
+ if (rai->rtpref == ND_RA_FLAG_RTPREF_RSV) {
+ errorlog("<%s> invalid router preference (%02x) on %s",
+ __func__, rai->rtpref, intface);
exit(1);
}
- MAYHAVE(val, "rltime", tmp->maxinterval * 3);
- if (val && (val < tmp->maxinterval || val > MAXROUTERLIFETIME)) {
- syslog(LOG_ERR,
- "<%s> router lifetime on %s must be 0 or"
- " between %d and %d",
- __FUNCTION__, intface,
- tmp->maxinterval, MAXROUTERLIFETIME);
+ MAYHAVE(val, "rltime", rai->maxinterval * 3);
+ if (val && (val < rai->maxinterval || val > MAXROUTERLIFETIME)) {
+ errorlog("<%s> router lifetime (%ld) on %s is invalid "
+ "(must be 0 or between %d and %d)",
+ __func__, val, intface,
+ rai->maxinterval,
+ MAXROUTERLIFETIME);
exit(1);
}
/*
* explicitly set zero. (see also the above section)
*/
if (val && forwarding == 0) {
- syslog(LOG_WARNING,
- "<%s> non zero router lifetime is specified for %s, "
- "which must not be allowed for hosts.",
- __FUNCTION__, intface);
+ errorlog("<%s> non zero router lifetime is specified for %s, "
+ "which must not be allowed for hosts. you must "
+ "change router lifetime or enable IPv6 forwarding.",
+ __func__, intface);
exit(1);
}
- tmp->lifetime = val & 0xffff;
+ rai->lifetime = val & 0xffff;
MAYHAVE(val, "rtime", DEF_ADVREACHABLETIME);
- if (val > MAXREACHABLETIME) {
- syslog(LOG_ERR,
- "<%s> reachable time must be no greater than %d",
- __FUNCTION__, MAXREACHABLETIME);
+ if (val < 0 || val > MAXREACHABLETIME) {
+ errorlog("<%s> reachable time (%ld) on %s is invalid "
+ "(must be no greater than %d)",
+ __func__, val, intface, MAXREACHABLETIME);
exit(1);
}
- tmp->reachabletime = (u_int32_t)val;
+ rai->reachabletime = (u_int32_t)val;
MAYHAVE(val64, "retrans", DEF_ADVRETRANSTIMER);
if (val64 < 0 || val64 > 0xffffffff) {
- syslog(LOG_ERR,
- "<%s> retrans time out of range", __FUNCTION__);
+ errorlog("<%s> retrans time (%lld) on %s out of range",
+ __func__, (long long)val64, intface);
exit(1);
}
- tmp->retranstimer = (u_int32_t)val64;
+ rai->retranstimer = (u_int32_t)val64;
-#ifndef MIP6
- if (agetstr("hapref", &bp) || agetstr("hatime", &bp)) {
- syslog(LOG_ERR,
- "<%s> mobile-ip6 configuration not supported",
- __FUNCTION__);
+ if (agetnum("hapref") != -1 || agetnum("hatime") != -1) {
+ errorlog("<%s> mobile-ip6 configuration not supported",
+ __func__);
exit(1);
}
-#else
- if (!mobileip6) {
- if (agetstr("hapref", &bp) || agetstr("hatime", &bp)) {
- syslog(LOG_ERR,
- "<%s> mobile-ip6 configuration without "
- "proper command line option",
- __FUNCTION__);
- exit(1);
- }
- } else {
- tmp->hapref = 0;
- if ((val = agetnum("hapref")) >= 0)
- tmp->hapref = (int16_t)val;
- if (tmp->hapref != 0) {
- tmp->hatime = 0;
- MUSTHAVE(val, "hatime");
- tmp->hatime = (u_int16_t)val;
- if (tmp->hatime <= 0) {
- syslog(LOG_ERR,
- "<%s> home agent lifetime must be greater than 0",
- __FUNCTION__);
- exit(1);
- }
- }
- }
-#endif
-
/* prefix information */
/*
- * This is an implementation specific parameter to consinder
+ * This is an implementation specific parameter to consider
* link propagation delays and poorly synchronized clocks when
* checking consistency of advertised lifetimes.
*/
MAYHAVE(val, "clockskew", 0);
- tmp->clockskew = val;
-
- if ((pfxs = agetnum("addrs")) < 0) {
- /* auto configure prefix information */
- if (agetstr("addr", &bp) || agetstr("addr1", &bp)) {
- syslog(LOG_ERR,
- "<%s> conflicting prefix configuration for %s: "
- "automatic and manual config at the same time",
- __FUNCTION__, intface);
- exit(1);
- }
- get_prefix(tmp);
- }
- else {
- tmp->pfxs = pfxs;
- for (i = 0; i < pfxs; i++) {
- struct prefix *pfx;
- char entbuf[256];
- int added = (pfxs > 1) ? 1 : 0;
-
- /* allocate memory to store prefix information */
- if ((pfx = malloc(sizeof(struct prefix))) == NULL) {
- syslog(LOG_ERR,
- "<%s> can't allocate enough memory",
- __FUNCTION__);
- exit(1);
- }
- memset(pfx, 0, sizeof(*pfx));
+ rai->clockskew = val;
- /* link into chain */
- insque(pfx, &tmp->prefix);
+ rai->pfxs = 0;
+ for (i = -1; i < MAXPREFIX; i++) {
+ struct prefix *pfx;
+ char entbuf[256];
- pfx->origin = PREFIX_FROM_CONFIG;
+ makeentry(entbuf, sizeof(entbuf), i, "addr");
+ addr = (char *)agetstr(entbuf, &bp);
+ if (addr == NULL)
+ continue;
- makeentry(entbuf, sizeof(entbuf), i, "prefixlen", added);
- MAYHAVE(val, entbuf, 64);
- if (val < 0 || val > 128) {
- syslog(LOG_ERR,
- "<%s> prefixlen out of range",
- __FUNCTION__);
- exit(1);
- }
- pfx->prefixlen = (int)val;
-
- makeentry(entbuf, sizeof(entbuf), i, "pinfoflags", added);
-#ifdef MIP6
- if (mobileip6)
- {
- MAYHAVE(val, entbuf,
- (ND_OPT_PI_FLAG_ONLINK|ND_OPT_PI_FLAG_AUTO|
- ND_OPT_PI_FLAG_ROUTER));
- } else
-#endif
- {
- MAYHAVE(val, entbuf,
- (ND_OPT_PI_FLAG_ONLINK|ND_OPT_PI_FLAG_AUTO));
- }
- pfx->onlinkflg = val & ND_OPT_PI_FLAG_ONLINK;
- pfx->autoconfflg = val & ND_OPT_PI_FLAG_AUTO;
-#ifdef MIP6
- pfx->routeraddr = val & ND_OPT_PI_FLAG_ROUTER;
-#endif
+ /* allocate memory to store prefix information */
+ ELM_MALLOC(pfx, exit(1));
- makeentry(entbuf, sizeof(entbuf), i, "vltime", added);
- MAYHAVE(val64, entbuf, DEF_ADVVALIDLIFETIME);
- if (val64 < 0 || val64 > 0xffffffff) {
- syslog(LOG_ERR,
- "<%s> vltime out of range",
- __FUNCTION__);
- exit(1);
- }
- pfx->validlifetime = (u_int32_t)val64;
-
- makeentry(entbuf, sizeof(entbuf), i, "vltimedecr", added);
- if (agetflag(entbuf)) {
- struct timeval now;
- gettimeofday(&now, 0);
- pfx->vltimeexpire =
- now.tv_sec + pfx->validlifetime;
- }
+ pfx->rainfo = rai;
+ pfx->origin = PREFIX_FROM_CONFIG;
- makeentry(entbuf, sizeof(entbuf), i, "pltime", added);
- MAYHAVE(val64, entbuf, DEF_ADVPREFERREDLIFETIME);
- if (val64 < 0 || val64 > 0xffffffff) {
- syslog(LOG_ERR,
- "<%s> pltime out of range",
- __FUNCTION__);
- exit(1);
- }
- pfx->preflifetime = (u_int32_t)val64;
-
- makeentry(entbuf, sizeof(entbuf), i, "pltimedecr", added);
- if (agetflag(entbuf)) {
- struct timeval now;
- gettimeofday(&now, 0);
- pfx->pltimeexpire =
- now.tv_sec + pfx->preflifetime;
- }
+ if (inet_pton(AF_INET6, addr, &pfx->prefix) != 1) {
+ errorlog("<%s> inet_pton failed for %s",
+ __func__, addr);
+ exit(1);
+ }
+ if (IN6_IS_ADDR_MULTICAST(&pfx->prefix)) {
+ errorlog("<%s> multicast prefix (%s) must "
+ "not be advertised on %s",
+ __func__, addr, intface);
+ exit(1);
+ }
+ if (IN6_IS_ADDR_LINKLOCAL(&pfx->prefix))
+ noticelog("<%s> link-local prefix (%s) will be"
+ " advertised on %s",
+ __func__, addr, intface);
- makeentry(entbuf, sizeof(entbuf), i, "addr", added);
- addr = (char *)agetstr(entbuf, &bp);
- if (addr == NULL) {
- syslog(LOG_ERR,
- "<%s> need %s as an prefix for "
- "interface %s",
- __FUNCTION__, entbuf, intface);
- exit(1);
- }
- if (inet_pton(AF_INET6, addr,
- &pfx->prefix) != 1) {
- syslog(LOG_ERR,
- "<%s> inet_pton failed for %s",
- __FUNCTION__, addr);
- exit(1);
- }
- if (IN6_IS_ADDR_MULTICAST(&pfx->prefix)) {
- syslog(LOG_ERR,
- "<%s> multicast prefix(%s) must "
- "not be advertised (IF=%s)",
- __FUNCTION__, addr, intface);
- exit(1);
- }
- if (IN6_IS_ADDR_LINKLOCAL(&pfx->prefix))
- syslog(LOG_NOTICE,
- "<%s> link-local prefix(%s) will be"
- " advertised on %s",
- __FUNCTION__, addr, intface);
+ makeentry(entbuf, sizeof(entbuf), i, "prefixlen");
+ MAYHAVE(val, entbuf, 64);
+ if (val < 0 || val > 128) {
+ errorlog("<%s> prefixlen (%ld) for %s "
+ "on %s out of range",
+ __func__, val, addr, intface);
+ exit(1);
+ }
+ pfx->prefixlen = (int)val;
+
+ makeentry(entbuf, sizeof(entbuf), i, "pinfoflags");
+ if ((flagstr = (char *)agetstr(entbuf, &bp))) {
+ val = 0;
+ if (strchr(flagstr, 'l'))
+ val |= ND_OPT_PI_FLAG_ONLINK;
+ if (strchr(flagstr, 'a'))
+ val |= ND_OPT_PI_FLAG_AUTO;
+ } else {
+ MAYHAVE(val, entbuf,
+ (ND_OPT_PI_FLAG_ONLINK|ND_OPT_PI_FLAG_AUTO));
+ }
+ pfx->onlinkflg = val & ND_OPT_PI_FLAG_ONLINK;
+ pfx->autoconfflg = val & ND_OPT_PI_FLAG_AUTO;
+
+ makeentry(entbuf, sizeof(entbuf), i, "vltime");
+ MAYHAVE(val64, entbuf, DEF_ADVVALIDLIFETIME);
+ if (val64 < 0 || val64 > 0xffffffff) {
+ errorlog("<%s> vltime (%lld) for "
+ "%s/%d on %s is out of range",
+ __func__, (long long)val64,
+ addr, pfx->prefixlen, intface);
+ exit(1);
+ }
+ pfx->validlifetime = (u_int32_t)val64;
+
+ makeentry(entbuf, sizeof(entbuf), i, "vltimedecr");
+ if (agetflag(entbuf)) {
+ struct timeval now;
+ gettimeofday(&now, 0);
+ pfx->vltimeexpire =
+ now.tv_sec + pfx->validlifetime;
}
+
+ makeentry(entbuf, sizeof(entbuf), i, "pltime");
+ MAYHAVE(val64, entbuf, DEF_ADVPREFERREDLIFETIME);
+ if (val64 < 0 || val64 > 0xffffffff) {
+ errorlog("<%s> pltime (%lld) for %s/%d on %s "
+ "is out of range",
+ __func__, (long long)val64,
+ addr, pfx->prefixlen, intface);
+ exit(1);
+ }
+ pfx->preflifetime = (u_int32_t)val64;
+
+ makeentry(entbuf, sizeof(entbuf), i, "pltimedecr");
+ if (agetflag(entbuf)) {
+ struct timeval now;
+ gettimeofday(&now, 0);
+ pfx->pltimeexpire =
+ now.tv_sec + pfx->preflifetime;
+ }
+ /* link into chain */
+ insque(pfx, &rai->prefix);
+ rai->pfxs++;
}
+ if (rai->pfxs == 0)
+ get_prefix(rai);
MAYHAVE(val, "mtu", 0);
if (val < 0 || val > 0xffffffff) {
- syslog(LOG_ERR,
- "<%s> mtu out of range", __FUNCTION__);
+ errorlog("<%s> mtu (%ld) on %s out of range",
+ __func__, val, intface);
exit(1);
}
- tmp->linkmtu = (u_int32_t)val;
- if (tmp->linkmtu == 0) {
+ rai->linkmtu = (u_int32_t)val;
+ if (rai->linkmtu == 0) {
char *mtustr;
if ((mtustr = (char *)agetstr("mtu", &bp)) &&
strcmp(mtustr, "auto") == 0)
- tmp->linkmtu = tmp->phymtu;
+ rai->linkmtu = rai->phymtu;
}
- else if (tmp->linkmtu < IPV6_MMTU || tmp->linkmtu > tmp->phymtu) {
- syslog(LOG_ERR,
- "<%s> advertised link mtu must be between"
- " least MTU and physical link MTU",
- __FUNCTION__);
+ else if (rai->linkmtu < IPV6_MMTU || rai->linkmtu > rai->phymtu) {
+ errorlog("<%s> advertised link mtu (%lu) on %s is invalid (must "
+ "be between least MTU (%d) and physical link MTU (%d)",
+ __func__, (unsigned long)rai->linkmtu, intface,
+ IPV6_MMTU, rai->phymtu);
exit(1);
}
- /* route information */
+#ifdef SIOCSIFINFO_IN6
+ {
+ struct in6_ndireq ndi;
+ int s;
- MAYHAVE(val, "routes", 0);
- if (val < 0 || val > 0xffffffff) {
- syslog(LOG_ERR,
- "<%s> number of route information improper", __FUNCTION__);
- exit(1);
- }
- tmp->routes = val;
- for (i = 0; i < tmp->routes; i++) {
- struct rtinfo *rti;
- char entbuf[256];
- int added = (tmp->routes > 1) ? 1 : 0;
-
- /* allocate memory to store prefix information */
- if ((rti = malloc(sizeof(struct rtinfo))) == NULL) {
- syslog(LOG_ERR,
- "<%s> can't allocate enough memory",
- __FUNCTION__);
+ if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
+ errorlog("<%s> socket: %s", __func__,
+ strerror(errno));
exit(1);
}
- memset(rti, 0, sizeof(*rti));
-
- /* link into chain */
- insque(rti, &tmp->route);
-
- makeentry(entbuf, sizeof(entbuf), i, "rtrplen", added);
- MAYHAVE(val, entbuf, 64);
- if (val < 0 || val > 128) {
- syslog(LOG_ERR,
- "<%s> prefixlen out of range",
- __FUNCTION__);
- exit(1);
+ memset(&ndi, 0, sizeof(ndi));
+ strlcpy(ndi.ifname, intface, sizeof(ndi.ifname));
+ if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&ndi) < 0) {
+ infolog("<%s> ioctl:SIOCGIFINFO_IN6 at %s: %s",
+ __func__, intface, strerror(errno));
}
- rti->prefixlen = (int)val;
- makeentry(entbuf, sizeof(entbuf), i, "rtrflags", added);
- MAYHAVE(val, entbuf, 0);
- rti->rtpref = val & ND_RA_FLAG_RTPREF_MASK;
- if (rti->rtpref == ND_RA_FLAG_RTPREF_RSV) {
- syslog(LOG_ERR, "<%s> invalid router preference",
- __FUNCTION__);
- exit(1);
+ /* reflect the RA info to the host variables in kernel */
+ ndi.ndi.chlim = rai->hoplimit;
+ ndi.ndi.retrans = rai->retranstimer;
+ ndi.ndi.basereachable = rai->reachabletime;
+ if (ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&ndi) < 0) {
+ infolog("<%s> ioctl:SIOCSIFINFO_IN6 at %s: %s",
+ __func__, intface, strerror(errno));
}
+ close(s);
+ }
+#endif
- makeentry(entbuf, sizeof(entbuf), i, "rtrltime", added);
- /*
- * XXX: since default value of route lifetime is not defined in
- * draft-draves-route-selection-01.txt, I took the default
- * value of valid lifetime of prefix as its default.
- * It need be much considered.
- */
- MAYHAVE(val64, entbuf, DEF_ADVVALIDLIFETIME);
- if (val64 < 0 || val64 > 0xffffffff) {
- syslog(LOG_ERR,
- "<%s> rtrltime out of range",
- __FUNCTION__);
- exit(1);
- }
- rti->ltime = (u_int32_t)val64;
+ /* route information */
+#ifdef ROUTEINFO
+ rai->routes = 0;
+ for (i = -1; i < MAXROUTE; i++) {
+ struct rtinfo *rti;
+ char entbuf[256], oentbuf[256];
- makeentry(entbuf, sizeof(entbuf), i, "rtrprefix", added);
+ makeentry(entbuf, sizeof(entbuf), i, "rtprefix");
addr = (char *)agetstr(entbuf, &bp);
if (addr == NULL) {
- syslog(LOG_ERR,
- "<%s> need %s as an route for "
- "interface %s",
- __FUNCTION__, entbuf, intface);
- exit(1);
+ makeentry(oentbuf, sizeof(oentbuf), i, "rtrprefix");
+ addr = (char *)agetstr(oentbuf, &bp);
+ if (addr) {
+ fprintf(stderr, "%s was obsoleted. Use %s.\n",
+ oentbuf, entbuf);
+ }
}
+ if (addr == NULL)
+ continue;
+
+ /* allocate memory to store prefix information */
+ ELM_MALLOC(rti, exit(1));
+
+ /* link into chain */
+ insque(rti, &rai->route);
+ rai->routes++;
+
if (inet_pton(AF_INET6, addr, &rti->prefix) != 1) {
- syslog(LOG_ERR,
- "<%s> inet_pton failed for %s",
- __FUNCTION__, addr);
+ errorlog( "<%s> inet_pton failed for %s",
+ __func__, addr);
exit(1);
}
#if 0
/*
* XXX: currently there's no restriction in route information
- * prefix according to draft-draves-route-selection-01.txt,
- * however I think the similar restriction be necessary.
+ * prefix according to
+ * draft-ietf-ipngwg-router-selection-00.txt.
+ * However, I think the similar restriction be necessary.
*/
MAYHAVE(val64, entbuf, DEF_ADVVALIDLIFETIME);
if (IN6_IS_ADDR_MULTICAST(&rti->prefix)) {
- syslog(LOG_ERR,
- "<%s> multicast route (%s) must "
- "not be advertised (IF=%s)",
- __FUNCTION__, addr, intface);
+ errorlog("<%s> multicast route (%s) must "
+ "not be advertised on %s",
+ __func__, addr, intface);
exit(1);
}
if (IN6_IS_ADDR_LINKLOCAL(&rti->prefix)) {
- syslog(LOG_NOTICE,
- "<%s> link-local route (%s) must "
- "not be advertised on %s",
- __FUNCTION__, addr, intface);
+ noticelog("<%s> link-local route (%s) will "
+ "be advertised on %s",
+ __func__, addr, intface);
exit(1);
}
#endif
+
+ makeentry(entbuf, sizeof(entbuf), i, "rtplen");
+ /* XXX: 256 is a magic number for compatibility check. */
+ MAYHAVE(val, entbuf, 256);
+ if (val == 256) {
+ makeentry(oentbuf, sizeof(oentbuf), i, "rtrplen");
+ MAYHAVE(val, oentbuf, 256);
+ if (val != 256) {
+ fprintf(stderr, "%s was obsoleted. Use %s.\n",
+ oentbuf, entbuf);
+ } else
+ val = 64;
+ }
+ if (val < 0 || val > 128) {
+ errorlog("<%s> prefixlen (%ld) for %s on %s "
+ "out of range",
+ __func__, val, addr, intface);
+ exit(1);
+ }
+ rti->prefixlen = (int)val;
+
+ makeentry(entbuf, sizeof(entbuf), i, "rtflags");
+ if ((flagstr = (char *)agetstr(entbuf, &bp))) {
+ val = 0;
+ if (strchr(flagstr, 'h'))
+ val |= ND_RA_FLAG_RTPREF_HIGH;
+ if (strchr(flagstr, 'l')) {
+ if ((val & ND_RA_FLAG_RTPREF_HIGH)) {
+ errorlog(
+ "<%s> the \'h\' and \'l\' route"
+ " preferences are exclusive",
+ __func__);
+ exit(1);
+ }
+ val |= ND_RA_FLAG_RTPREF_LOW;
+ }
+ } else
+ MAYHAVE(val, entbuf, 256); /* XXX */
+ if (val == 256) {
+ makeentry(oentbuf, sizeof(oentbuf), i, "rtrflags");
+ MAYHAVE(val, oentbuf, 256);
+ if (val != 256) {
+ fprintf(stderr, "%s was obsoleted. Use %s.\n",
+ oentbuf, entbuf);
+ } else
+ val = 0;
+ }
+ rti->rtpref = val & ND_RA_FLAG_RTPREF_MASK;
+ if (rti->rtpref == ND_RA_FLAG_RTPREF_RSV) {
+ errorlog("<%s> invalid route preference (%02x) "
+ "for %s/%d on %s",
+ __func__, rti->rtpref, addr,
+ rti->prefixlen, intface);
+ exit(1);
+ }
+
+ /*
+ * Since the spec does not a default value, we should make
+ * this entry mandatory. However, FreeBSD 4.4 has shipped
+ * with this field being optional, we use the router lifetime
+ * as an ad-hoc default value with a warning message.
+ */
+ makeentry(entbuf, sizeof(entbuf), i, "rtltime");
+ MAYHAVE(val64, entbuf, -1);
+ if (val64 == -1) {
+ makeentry(oentbuf, sizeof(oentbuf), i, "rtrltime");
+ MAYHAVE(val64, oentbuf, -1);
+ if (val64 != -1) {
+ fprintf(stderr, "%s was obsoleted. Use %s.\n",
+ oentbuf, entbuf);
+ } else {
+ fprintf(stderr, "%s should be specified "
+ "for interface %s.\n",
+ entbuf, intface);
+ val64 = rai->lifetime;
+ }
+ }
+ if (val64 < 0 || val64 > 0xffffffff) {
+ errorlog( "<%s> route lifetime (%lld) for "
+ "%s/%d on %s out of range", __func__,
+ (long long)val64, addr, rti->prefixlen, intface);
+ exit(1);
+ }
+ rti->ltime = (u_int32_t)val64;
}
+#endif
/* RDNSS option (RFC5006) */
- MAYHAVE(val, "rdnsslifetime", 2 * tmp->maxinterval);
- if (val < tmp->maxinterval || val > (2 * tmp->maxinterval)) {
- syslog(LOG_NOTICE,
- "<%s> rdnsslifetime (%lu) on %s SHOULD "
- "be between %u and %u", __FUNCTION__, val,
- intface, tmp->maxinterval, 2 * tmp->maxinterval);
+ MAYHAVE(val, "rdnsslifetime", 2 * rai->maxinterval);
+ if (val < rai->maxinterval || val > (2 * rai->maxinterval)) {
+ noticelog("<%s> rdnsslifetime (%lu) on %s SHOULD "
+ "be between %u and %u", __func__, val,
+ intface, rai->maxinterval, 2 * rai->maxinterval);
}
- tmp->rdnss_lifetime = val;
+ rai->rdnss_lifetime = val;
if ((rdnss_length = agetnum("rdnssaddrs")) < 0) {
- tmp->rdnss_length = 0;
+ rai->rdnss_length = 0;
}
else {
- tmp->rdnss_length = rdnss_length;
+ rai->rdnss_length = rdnss_length;
/* traverse in reverse order so that the queue has correct order */
for (i = (rdnss_length - 1); i >= 0; i--) {
struct rdnss *rdnss;
char entbuf[256];
- int added = (rdnss_length > 1) ? 1 : 0;
/* allocate memory to store server address information */
- if ((rdnss = malloc(sizeof(struct rdnss))) == NULL) {
- syslog(LOG_ERR,
- "<%s> can't allocate enough memory",
- __FUNCTION__);
- exit(1);
- }
- memset(rdnss, 0, sizeof(*rdnss));
-
+ ELM_MALLOC(rdnss, exit(1));
/* link into chain */
- insque(rdnss, &tmp->rdnss_list);
+ insque(rdnss, &rai->rdnss_list);
- makeentry(entbuf, sizeof(entbuf), i, "rdnssaddr", added);
+ makeentry(entbuf, sizeof(entbuf), i, "rdnssaddr");
addr = (char *)agetstr(entbuf, &bp);
+
+ if (addr == NULL && rdnss_length == 1) {
+ makeentry(entbuf, sizeof(entbuf), -1, "rdnssaddr");
+ addr = agetstr(entbuf, &bp);
+ }
+
if (addr == NULL) {
- syslog(LOG_ERR,
- "<%s> need %s as a DNS server address for "
+ errorlog("<%s> need %s as a DNS server address for "
"interface %s",
- __FUNCTION__, entbuf, intface);
+ __func__, entbuf, intface);
exit(1);
}
if (inet_pton(AF_INET6, addr, &rdnss->addr) != 1) {
- syslog(LOG_ERR,
- "<%s> inet_pton failed for %s",
- __FUNCTION__, addr);
+ errorlog("<%s> inet_pton failed for %s",
+ __func__, addr);
exit(1);
}
if (IN6_IS_ADDR_MULTICAST(&rdnss->addr)) {
- syslog(LOG_ERR,
- "<%s> multicast address (%s) must "
+ errorlog("<%s> multicast address (%s) must "
"not be advertised as recursive DNS server",
- __FUNCTION__, addr);
+ __func__, addr);
exit(1);
}
}
}
+ /* DNSSL option (RFC6106) */
+
+ /* Parse the DNSSL lifetime from the config */
+ MAYHAVE(val, "dnssllifetime", 2 * rai->maxinterval);
+ if (val < rai->maxinterval || val > (2 * rai->maxinterval)) {
+ noticelog("<%s> dnssllifetime (%lu) on %s SHOULD "
+ "be between %u and %u", __func__, val,
+ intface, rai->maxinterval, 2 * rai->maxinterval);
+ }
+ rai->dnssl_lifetime = val;
+ rai->dnssl_option_length = 8; /* 8 bytes for the option header */
+
+ /* Parse the DNSSL domain list from the config */
+ if ((dnssl_length = agetnum("dnssldomains")) < 0) {
+ rai->dnssl_length = 0;
+ } else {
+ rai->dnssl_length = dnssl_length;
+
+ for (i = (rai->dnssl_length - 1); i >= 0; i--) {
+ unsigned char *dnssl_buf;
+ struct dnssl *dnssl;
+ int dnssl_len;
+ char entbuf[sizeof("dnssldomain") + 20];
+ char *domain;
+ int domain_len;
+
+ makeentry(entbuf, sizeof(entbuf), i, "dnssldomain");
+ domain = agetstr(entbuf, &bp);
+
+ if (domain == NULL && rai->dnssl_length == 1) {
+ makeentry(entbuf, sizeof(entbuf), -1, "dnssldomain");
+ domain = agetstr(entbuf, &bp);
+ }
+
+ if (domain == NULL) {
+ errorlog("<%s> need %s as a DNS search domain for "
+ "interface %s",
+ __func__, entbuf, intface);
+ exit(1);
+ }
+
+ domain_len = strlen(domain);
+
+ /* Trim off leading dots */
+ while (domain_len > 0 && domain[0] == '.') {
+ domain++;
+ domain_len--;
+ }
+
+ /* Trim off trailing dots */
+ while (domain_len > 0 && domain[domain_len-1] == '.') {
+ domain_len--;
+ }
+
+ if (domain_len > 0) {
+ dnssl_len = sizeof(struct dnssl) + domain_len + 1;
+ dnssl_buf = (unsigned char *)malloc(dnssl_len);
+
+ memset(dnssl_buf, 0, dnssl_len);
+
+ dnssl = (struct dnssl *)dnssl_buf;
+ insque(dnssl, &rai->dnssl_list);
+
+ /* Copy the domain name in at the end of the dnssl struct */
+ memcpy(dnssl_buf + offsetof(struct dnssl, domain), domain,
+ domain_len);
+
+ /* Add 2 for leading length byte and the trailing 0 byte */
+ rai->dnssl_option_length += domain_len + 2;
+ }
+ }
+
+ /* Round up to the next multiple of 8 */
+ rai->dnssl_option_length += (8 - (rai->dnssl_option_length & 0x7));
+ }
+
+ /* captive portal */
+ capport = agetstr("capport", &bp);
+ if (capport != NULL) {
+ rai->capport = strdup(capport);
+ rai->capport_length = strlen(capport);
+ rai->capport_option_length
+ = sizeof(struct nd_opt_hdr) + rai->capport_length;
+ rai->capport_option_length
+ += (8 - (rai->capport_option_length & 0x7));
+ }
+
/* okey */
- tmp->next = ralist;
- ralist = tmp;
+ rai->next = ralist;
+ ralist = rai;
/* construct the sending packet */
- make_packet(tmp);
+ make_packet(rai);
/* set timer */
- tmp->timer = rtadvd_add_timer(ra_timeout, ra_timer_update,
- tmp, tmp);
- ra_timer_update((void *)tmp, &tmp->timer->tm);
- rtadvd_set_timer(&tmp->timer->tm, tmp->timer);
+ rai->timer = rtadvd_add_timer(ra_timeout, ra_timer_update,
+ rai, rai);
+ ra_timer_update((void *)rai, &rai->timer->tm);
+ rtadvd_set_timer(&rai->timer->tm, rai->timer);
}
-static void
+void
get_prefix(struct rainfo *rai)
{
struct ifaddrs *ifap, *ifa;
- struct prefix *pp;
+ struct prefix *pfx;
struct in6_addr *a;
u_char *p, *ep, *m, *lim;
- u_char ntopbuf[INET6_ADDRSTRLEN];
+ char ntopbuf[INET6_ADDRSTRLEN];
if (getifaddrs(&ifap) < 0) {
- syslog(LOG_ERR,
+ errorlog(
"<%s> can't get interface addresses",
- __FUNCTION__);
+ __func__);
exit(1);
}
+
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
+ int plen;
+
if (strcmp(ifa->ifa_name, rai->ifname) != 0)
continue;
if (ifa->ifa_addr->sa_family != AF_INET6)
a = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr;
if (IN6_IS_ADDR_LINKLOCAL(a))
continue;
-
- /* allocate memory to store prefix info. */
- if ((pp = malloc(sizeof(*pp))) == NULL) {
- syslog(LOG_ERR,
- "<%s> can't get allocate buffer for prefix",
- __FUNCTION__);
- exit(1);
- }
- memset(pp, 0, sizeof(*pp));
-
- /* set prefix length */
+ /* get prefix length */
m = (u_char *)&((struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr;
lim = (u_char *)(ifa->ifa_netmask) + ifa->ifa_netmask->sa_len;
- pp->prefixlen = prefixlen(m, lim);
- if (pp->prefixlen < 0 || pp->prefixlen > 128) {
- syslog(LOG_ERR,
- "<%s> failed to get prefixlen "
+ plen = prefixlen(m, lim);
+ if (plen <= 0 || plen > 128) {
+ errorlog( "<%s> failed to get prefixlen "
"or prefix is invalid",
- __FUNCTION__);
+ __func__);
exit(1);
}
+ if (plen == 128) /* XXX */
+ continue;
+ if (find_prefix(rai, a, plen)) {
+ /* ignore a duplicated prefix. */
+ continue;
+ }
+ /* allocate memory to store prefix info. */
+ ELM_MALLOC(pfx, exit(1));
/* set prefix, sweep bits outside of prefixlen */
- memcpy(&pp->prefix, a, sizeof(*a));
- p = (u_char *)&pp->prefix;
- ep = (u_char *)(&pp->prefix + 1);
- while (m < lim)
+ pfx->prefixlen = plen;
+ memcpy(&pfx->prefix, a, sizeof(*a));
+ p = (u_char *)&pfx->prefix;
+ ep = (u_char *)(&pfx->prefix + 1);
+ while (m < lim && p < ep)
*p++ &= *m++;
while (p < ep)
*p++ = 0x00;
-
- if (!inet_ntop(AF_INET6, &pp->prefix, (char *)ntopbuf,
+ if (!inet_ntop(AF_INET6, &pfx->prefix, ntopbuf,
sizeof(ntopbuf))) {
- syslog(LOG_ERR, "<%s> inet_ntop failed", __FUNCTION__);
+ errorlog("<%s> inet_ntop failed", __func__);
exit(1);
}
- syslog(LOG_DEBUG,
- "<%s> add %s/%d to prefix list on %s",
- __FUNCTION__, ntopbuf, pp->prefixlen, rai->ifname);
+ debuglog("<%s> add %s/%d to prefix list on %s",
+ __func__, ntopbuf, pfx->prefixlen, rai->ifname);
/* set other fields with protocol defaults */
- pp->validlifetime = DEF_ADVVALIDLIFETIME;
- pp->preflifetime = DEF_ADVPREFERREDLIFETIME;
- pp->onlinkflg = 1;
- pp->autoconfflg = 1;
- pp->origin = PREFIX_FROM_KERNEL;
+ pfx->validlifetime = DEF_ADVVALIDLIFETIME;
+ pfx->preflifetime = DEF_ADVPREFERREDLIFETIME;
+ pfx->onlinkflg = 1;
+ pfx->autoconfflg = 1;
+ pfx->origin = PREFIX_FROM_KERNEL;
+ pfx->rainfo = rai;
/* link into chain */
- insque(pp, &rai->prefix);
+ insque(pfx, &rai->prefix);
/* counter increment */
rai->pfxs++;
}
static void
-makeentry(char *buf, size_t len, int id, char *string, int add)
+makeentry(buf, len, id, string)
+ char *buf;
+ size_t len;
+ int id;
+ char *string;
{
- strlcpy(buf, string, len);
- if (add) {
- char *cp;
- cp = (char *)index(buf, '\0');
- cp += snprintf(cp, len - (cp - buf), "%d", id);
- *cp = '\0';
- }
+ if (id < 0)
+ strlcpy(buf, string, len);
+ else
+ snprintf(buf, len, "%s%d", string, id);
}
/*
* Add a prefix to the list of specified interface and reconstruct
* the outgoing packet.
* The prefix must not be in the list.
- * XXX: other parameter of the prefix(e.g. lifetime) shoule be
+ * XXX: other parameters of the prefix (e.g. lifetime) should be
* able to be specified.
*/
static void
add_prefix(struct rainfo *rai, struct in6_prefixreq *ipr)
{
struct prefix *prefix;
- u_char ntopbuf[INET6_ADDRSTRLEN];
+ char ntopbuf[INET6_ADDRSTRLEN];
- if ((prefix = malloc(sizeof(*prefix))) == NULL) {
- syslog(LOG_ERR, "<%s> memory allocation failed",
- __FUNCTION__);
- return; /* XXX: error or exit? */
- }
- memset(prefix, 0, sizeof(*prefix));
+ ELM_MALLOC(prefix, exit(1));
prefix->prefix = ipr->ipr_prefix.sin6_addr;
prefix->prefixlen = ipr->ipr_plen;
prefix->validlifetime = ipr->ipr_vltime;
prefix->onlinkflg = ipr->ipr_raf_onlink;
prefix->autoconfflg = ipr->ipr_raf_auto;
prefix->origin = PREFIX_FROM_DYNAMIC;
+ prefix->rainfo = rai;
insque(prefix, &rai->prefix);
- syslog(LOG_DEBUG, "<%s> new prefix %s/%d was added on %s",
- __FUNCTION__, inet_ntop(AF_INET6, &ipr->ipr_prefix.sin6_addr,
- (char *)ntopbuf, INET6_ADDRSTRLEN),
+ debuglog("<%s> new prefix %s/%d was added on %s",
+ __func__, inet_ntop(AF_INET6, &ipr->ipr_prefix.sin6_addr,
+ ntopbuf, INET6_ADDRSTRLEN),
ipr->ipr_plen, rai->ifname);
/* free the previous packet */
/* reconstruct the packet */
rai->pfxs++;
make_packet(rai);
-
- /*
- * reset the timer so that the new prefix will be advertised quickly.
- */
- rai->initcounter = 0;
- ra_timer_update((void *)rai, &rai->timer->tm);
- rtadvd_set_timer(&rai->timer->tm, rai->timer);
}
/*
* The prefix must be in the list.
*/
void
-delete_prefix(struct rainfo *rai, struct prefix *prefix)
+delete_prefix(struct prefix *prefix)
{
- u_char ntopbuf[INET6_ADDRSTRLEN];
+ char ntopbuf[INET6_ADDRSTRLEN];
+ struct rainfo *rai = prefix->rainfo;
remque(prefix);
- syslog(LOG_DEBUG, "<%s> prefix %s/%d was deleted on %s",
- __FUNCTION__, inet_ntop(AF_INET6, &prefix->prefix,
- (char *)ntopbuf, INET6_ADDRSTRLEN),
+ debuglog("<%s> prefix %s/%d was deleted on %s",
+ __func__, inet_ntop(AF_INET6, &prefix->prefix,
+ ntopbuf, INET6_ADDRSTRLEN),
prefix->prefixlen, rai->ifname);
+ if (prefix->timer)
+ rtadvd_remove_timer(&prefix->timer);
free(prefix);
rai->pfxs--;
- make_packet(rai);
+}
+
+void
+invalidate_prefix(struct prefix *prefix)
+{
+ char ntopbuf[INET6_ADDRSTRLEN];
+ struct timeval timo;
+ struct rainfo *rai = prefix->rainfo;
+
+ if (prefix->timer) { /* sanity check */
+ errorlog("<%s> assumption failure: timer already exists",
+ __func__);
+ exit(1);
+ }
+
+ debuglog("<%s> prefix %s/%d was invalidated on %s, "
+ "will expire in %ld seconds", __func__,
+ inet_ntop(AF_INET6, &prefix->prefix, ntopbuf, INET6_ADDRSTRLEN),
+ prefix->prefixlen, rai->ifname, (long)prefix_timo);
+
+ /* set the expiration timer */
+ prefix->timer = rtadvd_add_timer(prefix_timeout, NULL, prefix, NULL);
+ if (prefix->timer == NULL) {
+ errorlog("<%s> failed to add a timer for a prefix. "
+ "remove the prefix", __func__);
+ delete_prefix(prefix);
+ return;
+ }
+ timo.tv_sec = prefix_timo;
+ timo.tv_usec = 0;
+ rtadvd_set_timer(&timo, prefix->timer);
+}
+
+static struct rtadvd_timer *
+prefix_timeout(void *arg)
+{
+ struct prefix *prefix = (struct prefix *)arg;
+
+ delete_prefix(prefix);
+
+ return(NULL);
+}
+
+void
+update_prefix(struct prefix * prefix)
+{
+ char ntopbuf[INET6_ADDRSTRLEN];
+ struct rainfo *rai = prefix->rainfo;
+
+ if (prefix->timer == NULL) { /* sanity check */
+ errorlog("<%s> assumption failure: timer does not exist",
+ __func__);
+ exit(1);
+ }
+
+ debuglog("<%s> prefix %s/%d was re-enabled on %s",
+ __func__, inet_ntop(AF_INET6, &prefix->prefix, ntopbuf,
+ INET6_ADDRSTRLEN), prefix->prefixlen, rai->ifname);
+
+ /* stop the expiration timer */
+ rtadvd_remove_timer(&prefix->timer);
}
/*
static int
init_prefix(struct in6_prefixreq *ipr)
{
+#if 0
int s;
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
- syslog(LOG_ERR, "<%s> socket: %s", __FUNCTION__,
+ errorlog("<%s> socket: %s", __func__,
strerror(errno));
exit(1);
}
if (ioctl(s, SIOCGIFPREFIX_IN6, (caddr_t)ipr) < 0) {
- syslog(LOG_INFO, "<%s> ioctl:SIOCGIFPREFIX %s", __FUNCTION__,
+ infolog("<%s> ioctl:SIOCGIFPREFIX %s", __func__,
strerror(errno));
ipr->ipr_vltime = DEF_ADVVALIDLIFETIME;
/* omit other field initialization */
}
else if (ipr->ipr_origin < PR_ORIG_RR) {
- u_char ntopbuf[INET6_ADDRSTRLEN];
+ char ntopbuf[INET6_ADDRSTRLEN];
- syslog(LOG_WARNING, "<%s> Added prefix(%s)'s origin %d is"
+ noticelog("<%s> Added prefix(%s)'s origin %d is"
"lower than PR_ORIG_RR(router renumbering)."
- "This should not happen if I am router", __FUNCTION__,
- inet_ntop(AF_INET6, &ipr->ipr_prefix.sin6_addr, (char *)ntopbuf,
+ "This should not happen if I am router", __func__,
+ inet_ntop(AF_INET6, &ipr->ipr_prefix.sin6_addr, ntopbuf,
sizeof(ntopbuf)), ipr->ipr_origin);
close(s);
return 1;
close(s);
return 0;
+#else
+ ipr->ipr_vltime = DEF_ADVVALIDLIFETIME;
+ ipr->ipr_pltime = DEF_ADVPREFERREDLIFETIME;
+ ipr->ipr_raf_onlink = 1;
+ ipr->ipr_raf_auto = 1;
+ return 0;
+#endif
}
void
memset(&ipr, 0, sizeof(ipr));
if (if_indextoname(ifindex, ipr.ipr_name) == NULL) {
- syslog(LOG_ERR, "<%s> Prefix added interface No.%d doesn't"
- "exist. This should not happen! %s", __FUNCTION__,
+ errorlog("<%s> Prefix added interface No.%d doesn't"
+ "exist. This should not happen! %s", __func__,
ifindex, strerror(errno));
exit(1);
}
make_packet(struct rainfo *rainfo)
{
size_t packlen, lladdroptlen = 0;
- char *buf;
+ u_char *buf;
struct nd_router_advert *ra;
struct nd_opt_prefix_info *ndopt_pi;
struct nd_opt_mtu *ndopt_mtu;
-#ifdef MIP6
- struct nd_opt_advinterval *ndopt_advint;
- struct nd_opt_homeagent_info *ndopt_hai;
-#endif
+#ifdef ROUTEINFO
struct nd_opt_route_info *ndopt_rti;
- struct prefix *pfx;
struct rtinfo *rti;
+#endif
+ struct prefix *pfx;
/* calculate total length */
packlen = sizeof(struct nd_router_advert);
if (rainfo->advlinkopt) {
if ((lladdroptlen = lladdropt_length(rainfo->sdl)) == 0) {
- syslog(LOG_INFO,
- "<%s> link-layer address option has"
- " null length on %s."
- " Treat as not included.",
- __FUNCTION__, rainfo->ifname);
+ infolog("<%s> link-layer address option has"
+ " null length on %s. Treat as not included.",
+ __func__, rainfo->ifname);
rainfo->advlinkopt = 0;
}
packlen += lladdroptlen;
packlen += sizeof(struct nd_opt_prefix_info) * rainfo->pfxs;
if (rainfo->linkmtu)
packlen += sizeof(struct nd_opt_mtu);
-#ifdef MIP6
- if (mobileip6 && rainfo->maxinterval)
- packlen += sizeof(struct nd_opt_advinterval);
- if (mobileip6 && rainfo->hatime)
- packlen += sizeof(struct nd_opt_homeagent_info);
-#endif
-#ifdef ND_OPT_ROUTE_INFO
+#ifdef ROUTEINFO
for (rti = rainfo->route.next; rti != &rainfo->route; rti = rti->next)
packlen += sizeof(struct nd_opt_route_info) +
((rti->prefixlen + 0x3f) >> 6) * 8;
if (rainfo->rdnss_length > 0)
packlen += 8 + sizeof(struct in6_addr) * rainfo->rdnss_length;
+ if (rainfo->dnssl_length > 0) {
+ packlen += rainfo->dnssl_option_length;
+ }
+ if (rainfo->capport_option_length != 0) {
+ packlen += rainfo->capport_option_length;
+ }
+
/* allocate memory for the packet */
if ((buf = malloc(packlen)) == NULL) {
- syslog(LOG_ERR,
- "<%s> can't get enough memory for an RA packet",
- __FUNCTION__);
+ errorlog("<%s> can't get enough memory for an RA packet",
+ __func__);
exit(1);
}
if (rainfo->ra_data) {
free(rainfo->ra_data);
rainfo->ra_data = NULL;
}
- rainfo->ra_data = (u_char *)buf;
+ rainfo->ra_data = buf;
/* XXX: what if packlen > 576? */
rainfo->ra_datalen = packlen;
rainfo->managedflg ? ND_RA_FLAG_MANAGED : 0;
ra->nd_ra_flags_reserved |=
rainfo->otherflg ? ND_RA_FLAG_OTHER : 0;
-#ifdef MIP6
- ra->nd_ra_flags_reserved |=
- rainfo->haflg ? ND_RA_FLAG_HA : 0;
-#endif
ra->nd_ra_router_lifetime = htons(rainfo->lifetime);
ra->nd_ra_reachable = htonl(rainfo->reachabletime);
ra->nd_ra_retransmit = htonl(rainfo->retranstimer);
buf += sizeof(struct nd_opt_mtu);
}
-#ifdef MIP6
- if (mobileip6 && rainfo->maxinterval) {
- ndopt_advint = (struct nd_opt_advinterval *)buf;
- ndopt_advint->nd_opt_adv_type = ND_OPT_ADVINTERVAL;
- ndopt_advint->nd_opt_adv_len = 1;
- ndopt_advint->nd_opt_adv_reserved = 0;
- ndopt_advint->nd_opt_adv_interval = htonl(rainfo->maxinterval *
- 1000);
- buf += sizeof(struct nd_opt_advinterval);
- }
-#endif
-
-#ifdef MIP6
- if (rainfo->hatime) {
- ndopt_hai = (struct nd_opt_homeagent_info *)buf;
- ndopt_hai->nd_opt_hai_type = ND_OPT_HOMEAGENT_INFO;
- ndopt_hai->nd_opt_hai_len = 1;
- ndopt_hai->nd_opt_hai_reserved = 0;
- ndopt_hai->nd_opt_hai_preference = htons(rainfo->hapref);
- ndopt_hai->nd_opt_hai_lifetime = htons(rainfo->hatime);
- buf += sizeof(struct nd_opt_homeagent_info);
- }
-#endif
-
for (pfx = rainfo->prefix.next;
pfx != &rainfo->prefix; pfx = pfx->next) {
u_int32_t vltime, pltime;
if (pfx->autoconfflg)
ndopt_pi->nd_opt_pi_flags_reserved |=
ND_OPT_PI_FLAG_AUTO;
-#ifdef MIP6
- if (pfx->routeraddr)
- ndopt_pi->nd_opt_pi_flags_reserved |=
- ND_OPT_PI_FLAG_ROUTER;
-#endif
- if (pfx->vltimeexpire || pfx->pltimeexpire)
- gettimeofday(&now, NULL);
- if (pfx->vltimeexpire == 0)
- vltime = pfx->validlifetime;
- else
- vltime = (pfx->vltimeexpire > now.tv_sec) ?
- pfx->vltimeexpire - now.tv_sec : 0;
- if (pfx->pltimeexpire == 0)
- pltime = pfx->preflifetime;
- else
- pltime = (pfx->pltimeexpire > now.tv_sec) ?
- pfx->pltimeexpire - now.tv_sec : 0;
+ if (pfx->timer)
+ vltime = 0;
+ else {
+ if (pfx->vltimeexpire || pfx->pltimeexpire)
+ gettimeofday(&now, NULL);
+ if (pfx->vltimeexpire == 0)
+ vltime = pfx->validlifetime;
+ else
+ vltime = (pfx->vltimeexpire > now.tv_sec) ?
+ pfx->vltimeexpire - now.tv_sec : 0;
+ }
+ if (pfx->timer)
+ pltime = 0;
+ else {
+ if (pfx->pltimeexpire == 0)
+ pltime = pfx->preflifetime;
+ else
+ pltime = (pfx->pltimeexpire > now.tv_sec) ?
+ pfx->pltimeexpire - now.tv_sec : 0;
+ }
if (vltime < pltime) {
/*
* this can happen if vltime is decrement but pltime
buf += sizeof(struct nd_opt_prefix_info);
}
-#ifdef ND_OPT_ROUTE_INFO
+#ifdef ROUTEINFO
for (rti = rainfo->route.next; rti != &rainfo->route; rti = rti->next) {
u_int8_t psize = (rti->prefixlen + 0x3f) >> 6;
ndopt_rti->nd_opt_rti_len = 1 + psize;
ndopt_rti->nd_opt_rti_prefixlen = rti->prefixlen;
ndopt_rti->nd_opt_rti_flags = 0xff & rti->rtpref;
- ndopt_rti->nd_opt_rti_lifetime = rti->ltime;
+ ndopt_rti->nd_opt_rti_lifetime = htonl(rti->ltime);
memcpy(ndopt_rti + 1, &rti->prefix, psize * 8);
buf += sizeof(struct nd_opt_route_info) + psize * 8;
}
}
}
+ if (rainfo->dnssl_length > 0) {
+ struct nd_opt_dnssl * dnssl_opt;
+ struct dnssl * dnssl;
+ int domains_length = 0;
+ u_char * cursor = buf;
+
+ memset(cursor, 0, rainfo->dnssl_option_length);
+
+ dnssl_opt = (struct nd_opt_dnssl *)cursor;
+ dnssl_opt->nd_opt_dnssl_type = ND_OPT_DNSSL;
+ /*
+ * Length is in units of 8 octets. Divide total byte length
+ * of the option by 8.
+ */
+ dnssl_opt->nd_opt_dnssl_len = rainfo->dnssl_option_length >> 3;
+ dnssl_opt->nd_opt_dnssl_reserved = 0;
+ dnssl_opt->nd_opt_dnssl_lifetime =
+ htonl(rainfo->dnssl_lifetime);
+
+ cursor += offsetof(struct nd_opt_dnssl, nd_opt_dnssl_domains);
+
+ for (dnssl = rainfo->dnssl_list.next;
+ dnssl != &rainfo->dnssl_list;
+ dnssl = dnssl->next)
+ {
+ int encodeLen = encode_domain(dnssl->domain, cursor);
+ cursor += encodeLen;
+ domains_length += encodeLen;
+ }
+
+ buf += rainfo->dnssl_option_length;
+ }
+ if (rainfo->capport != NULL) {
+ struct nd_opt_hdr * capport_opt;
+ u_int32_t zero_space;
+
+ capport_opt = (struct nd_opt_hdr *)buf;
+#ifndef ND_OPT_CAPTIVE_PORTAL
+#define ND_OPT_CAPTIVE_PORTAL 37 /* RFC 7710 */
+#endif /* ND_OPT_CAPTIVE_PORTAL */
+ capport_opt->nd_opt_type = ND_OPT_CAPTIVE_PORTAL;
+ capport_opt->nd_opt_len = rainfo->capport_option_length >> 3;
+ buf += sizeof(*capport_opt);
+ bcopy(rainfo->capport, buf, rainfo->capport_length);
+ buf += rainfo->capport_length;
+ zero_space = rainfo->capport_option_length
+ - rainfo->capport_length;
+ if (zero_space > 0) {
+ bzero(buf, zero_space);
+ buf += zero_space;
+ }
+ }
return;
}
size = sizeof(value);
if (sysctl(mib, sizeof(mib)/sizeof(mib[0]), &value, &size, NULL, 0)
< 0) {
- syslog(LOG_ERR, "<%s>: failed to get ip6 sysctl(%d): %s",
- __FUNCTION__, code,
+ errorlog( "<%s>: failed to get ip6 sysctl(%d): %s",
+ __func__, code,
strerror(errno));
return(-1);
}
else
return(value);
}
+
+/*
+ * Encode a domain name into a buffer according to the rules in RFC 1035 section
+ * 3.1. Do not use the compression techniques outlined in section 4.1.4.
+ */
+int
+encode_domain(char *domain, u_char *dst)
+{
+ char *domainCopy = strdup(domain);
+ char *input = domainCopy;
+ char *label;
+ u_char *cursor = dst;
+
+ while ((label = strsep(&input, ".")) != NULL) {
+ int label_len = strlen(label) & 0x3f; /* Max length is 63 */
+ if (label_len > 0) {
+ *cursor = (u_char)label_len;
+ cursor++;
+ memcpy(cursor, label, label_len);
+ cursor += label_len;
+ }
+ }
+ *cursor = 0;
+ cursor++;
+
+ free(domainCopy);
+
+ return (cursor - dst);
+}
projects / apple / network_cmds.git / blobdiff