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Code Issues Releases Activity

- Add ":origin" label to the interface id for resolvconf(8). (r223149)

Browse Source 
- Add -u option to enable adding :[RA-source-address] to the interface id.
  (r223149)
- s/INET6_ADDRSTRLEN/sizeof(ntopbuf)/  (r223149)
- Fix a bug that can prevent -D from being overridden by -d. (r223149)
- /-P pidfile/-p pidfile/ for consistency with rtadvd(8). (r223149)
- Fix -F flag handling to support receiving RAs even when ip6.forwarding=1.
  (r225150)

Approved by:	re (kib)
This commit is contained in:
Hiroki Sato 2011-09-12 23:55:23 +00:00
parent aed378729e
commit 489e04d0da
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=225520
4 changed files with 164 additions and 52 deletions
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133
usr.sbin/rtsold/rtsol.c
View File

@ -73,6 +73,7 @@ static struct sockaddr_in6 from;
static int rcvcmsglen;
int rssock;
static char rsid[IFNAMSIZ + 1 + sizeof(DNSINFO_ORIGIN_LABEL) + 1 + NI_MAXHOST];
struct ifinfo_head_t ifinfo_head =
TAILQ_HEAD_INITIALIZER(ifinfo_head);
@ -82,14 +83,18 @@ static const struct sockaddr_in6 sin6_allrouters = {
.sin6_addr = IN6ADDR_LINKLOCAL_ALLROUTERS_INIT,
};
static void call_script(const int, const char *const *, void *);
static void call_script(const int, const char *const *,
struct script_msg_head_t *);
static size_t dname_labeldec(char *, size_t, const char *);
static int safefile(const char *);
static struct ra_opt *find_raopt(struct rainfo *, int, void *, size_t);
static int ra_opt_rdnss_dispatch(struct ifinfo *, struct rainfo *,
struct script_msg_head_t *, struct script_msg_head_t *);
static char *make_rsid(const char *, const char *, struct rainfo *);
#define _ARGS_OTHER otherconf_script, ifi->ifname
#define _ARGS_RESADD resolvconf_script, "-a", ifi->ifname
#define _ARGS_RESDEL resolvconf_script, "-d", ifi->ifname
#define _ARGS_RESADD resolvconf_script, "-a", rsid
#define _ARGS_RESDEL resolvconf_script, "-d", rsid
#define CALL_SCRIPT(name, sm_head) \
do { \
@ -306,7 +311,7 @@ rtsol_input(int s)
warnmsg(LOG_ERR, __func__,
"invalid icmp type(%d) from %s on %s", icp->icmp6_type,
inet_ntop(AF_INET6, &from.sin6_addr, ntopbuf,
INET6_ADDRSTRLEN),
sizeof(ntopbuf)),
if_indextoname(pi->ipi6_ifindex, ifnamebuf));
return;
}
@ -315,7 +320,7 @@ rtsol_input(int s)
warnmsg(LOG_INFO, __func__,
"invalid icmp code(%d) from %s on %s", icp->icmp6_code,
inet_ntop(AF_INET6, &from.sin6_addr, ntopbuf,
INET6_ADDRSTRLEN),
sizeof(ntopbuf)),
if_indextoname(pi->ipi6_ifindex, ifnamebuf));
return;
}
@ -325,7 +330,7 @@ rtsol_input(int s)
"invalid RA with hop limit(%d) from %s on %s",
*hlimp,
inet_ntop(AF_INET6, &from.sin6_addr, ntopbuf,
INET6_ADDRSTRLEN),
sizeof(ntopbuf)),
if_indextoname(pi->ipi6_ifindex, ifnamebuf));
return;
}
@ -334,7 +339,7 @@ rtsol_input(int s)
warnmsg(LOG_INFO, __func__,
"invalid RA with non link-local source from %s on %s",
inet_ntop(AF_INET6, &from.sin6_addr, ntopbuf,
INET6_ADDRSTRLEN),
sizeof(ntopbuf)),
if_indextoname(pi->ipi6_ifindex, ifnamebuf));
return;
}
@ -345,14 +350,14 @@ rtsol_input(int s)
warnmsg(LOG_INFO, __func__,
"received RA from %s on an unexpected IF(%s)",
inet_ntop(AF_INET6, &from.sin6_addr, ntopbuf,
INET6_ADDRSTRLEN),
sizeof(ntopbuf)),
if_indextoname(pi->ipi6_ifindex, ifnamebuf));
return;
}
warnmsg(LOG_DEBUG, __func__,
"received RA from %s on %s, state is %d",
inet_ntop(AF_INET6, &from.sin6_addr, ntopbuf, INET6_ADDRSTRLEN),
inet_ntop(AF_INET6, &from.sin6_addr, ntopbuf, sizeof(ntopbuf)),
ifi->ifname, ifi->state);
nd_ra = (struct nd_router_advert *)icp;
@ -378,6 +383,8 @@ rtsol_input(int s)
ELM_MALLOC(rai, exit(1));
rai->rai_ifinfo = ifi;
TAILQ_INIT(&rai->rai_ra_opt);
rai->rai_saddr.sin6_family = AF_INET6;
rai->rai_saddr.sin6_len = sizeof(rai->rai_saddr);
memcpy(&rai->rai_saddr.sin6_addr, &from.sin6_addr,
sizeof(rai->rai_saddr.sin6_addr));
newent_rai = 1;
@ -406,19 +413,19 @@ rtsol_input(int s)
"too short RDNSS option"
"in RA from %s was ignored.",
inet_ntop(AF_INET6, &from.sin6_addr,
ntopbuf, INET6_ADDRSTRLEN));
ntopbuf, sizeof(ntopbuf)));
break;
}
addr = (struct in6_addr *)(raoptp + sizeof(*rdnss));
while ((char *)addr < (char *)RA_OPT_NEXT_HDR(raoptp)) {
if (inet_ntop(AF_INET6, addr, ntopbuf,
INET6_ADDRSTRLEN) == NULL) {
sizeof(ntopbuf)) == NULL) {
warnmsg(LOG_INFO, __func__,
"an invalid address in RDNSS option"
" in RA from %s was ignored.",
inet_ntop(AF_INET6, &from.sin6_addr,
ntopbuf, INET6_ADDRSTRLEN));
ntopbuf, sizeof(ntopbuf)));
addr++;
continue;
}
@ -482,7 +489,7 @@ rtsol_input(int s)
"too short DNSSL option"
"in RA from %s was ignored.",
inet_ntop(AF_INET6, &from.sin6_addr,
ntopbuf, INET6_ADDRSTRLEN));
ntopbuf, sizeof(ntopbuf)));
break;
}
@ -568,10 +575,11 @@ ra_opt_handler(struct ifinfo *ifi)
struct rainfo *rai;
struct script_msg *smp1, *smp2, *smp3;
struct timeval now;
TAILQ_HEAD(, script_msg) sm_rdnss_head =
TAILQ_HEAD_INITIALIZER(sm_rdnss_head);
TAILQ_HEAD(, script_msg) sm_dnssl_head =
TAILQ_HEAD_INITIALIZER(sm_dnssl_head);
struct script_msg_head_t sm_rdnss_head =
TAILQ_HEAD_INITIALIZER(sm_rdnss_head);
struct script_msg_head_t sm_dnssl_head =
TAILQ_HEAD_INITIALIZER(sm_dnssl_head);
int dcount, dlen;
dcount = 0;
@ -658,17 +666,69 @@ ra_opt_handler(struct ifinfo *ifi)
free1:
free(smp1);
}
/* Call the script for each information source. */
if (uflag)
ra_opt_rdnss_dispatch(ifi, rai, &sm_rdnss_head,
&sm_dnssl_head);
}
/* Add \n for DNSSL list. */
if (!TAILQ_EMPTY(&sm_dnssl_head)) {
ELM_MALLOC(smp1, goto ra_opt_handler_freeit);
smp1->sm_msg = resstr_nl;
TAILQ_INSERT_TAIL(&sm_dnssl_head, smp1, sm_next);
}
TAILQ_CONCAT(&sm_rdnss_head, &sm_dnssl_head, sm_next);
/* Call the script for each interface. */
if (!uflag)
ra_opt_rdnss_dispatch(ifi, NULL, &sm_rdnss_head,
&sm_dnssl_head);
return (0);
}
if (!TAILQ_EMPTY(&sm_rdnss_head))
CALL_SCRIPT(RESADD, &sm_rdnss_head);
char *
make_rsid(const char *ifname, const char *origin, struct rainfo *rai)
{
char hbuf[NI_MAXHOST];
if (rai == NULL)
sprintf(rsid, "%s:%s", ifname, origin);
else {
if (!IN6_IS_ADDR_LINKLOCAL(&rai->rai_saddr.sin6_addr))
return (NULL);
if (getnameinfo((struct sockaddr *)&rai->rai_saddr,
rai->rai_saddr.sin6_len, hbuf, sizeof(hbuf), NULL, 0,
NI_NUMERICHOST) != 0)
return (NULL);
sprintf(rsid, "%s:%s:[%s]", ifname, origin, hbuf);
}
warnmsg(LOG_DEBUG, __func__, "rsid = [%s]", rsid);
return (rsid);
}
int
ra_opt_rdnss_dispatch(struct ifinfo *ifi,
struct rainfo *rai,
struct script_msg_head_t *sm_rdnss_head,
struct script_msg_head_t *sm_dnssl_head)
{
const char *r;
struct script_msg *smp1;
int error;
error = 0;
/* Add \n for DNSSL list. */
if (!TAILQ_EMPTY(sm_dnssl_head)) {
ELM_MALLOC(smp1, goto ra_opt_rdnss_freeit);
smp1->sm_msg = resstr_nl;
TAILQ_INSERT_TAIL(sm_dnssl_head, smp1, sm_next);
}
TAILQ_CONCAT(sm_rdnss_head, sm_dnssl_head, sm_next);
if (rai != NULL && uflag)
r = make_rsid(ifi->ifname, DNSINFO_ORIGIN_LABEL, rai);
else
r = make_rsid(ifi->ifname, DNSINFO_ORIGIN_LABEL, NULL);
if (r == NULL) {
warnmsg(LOG_ERR, __func__, "make_rsid() failed. "
"Script was not invoked.");
error = 1;
goto ra_opt_rdnss_freeit;
}
if (!TAILQ_EMPTY(sm_rdnss_head))
CALL_SCRIPT(RESADD, sm_rdnss_head);
else if (ifi->ifi_rdnss == IFI_DNSOPT_STATE_RECEIVED ||
ifi->ifi_dnssl == IFI_DNSOPT_STATE_RECEIVED) {
CALL_SCRIPT(RESDEL, NULL);
@ -676,21 +736,21 @@ ra_opt_handler(struct ifinfo *ifi)
ifi->ifi_dnssl = IFI_DNSOPT_STATE_NOINFO;
}
ra_opt_handler_freeit:
ra_opt_rdnss_freeit:
/* Clear script message queue. */
if (!TAILQ_EMPTY(&sm_rdnss_head)) {
while ((smp1 = TAILQ_FIRST(&sm_rdnss_head)) != NULL) {
TAILQ_REMOVE(&sm_rdnss_head, smp1, sm_next);
if (!TAILQ_EMPTY(sm_rdnss_head)) {
while ((smp1 = TAILQ_FIRST(sm_rdnss_head)) != NULL) {
TAILQ_REMOVE(sm_rdnss_head, smp1, sm_next);
free(smp1);
}
}
if (!TAILQ_EMPTY(&sm_dnssl_head)) {
while ((smp1 = TAILQ_FIRST(&sm_dnssl_head)) != NULL) {
TAILQ_REMOVE(&sm_dnssl_head, smp1, sm_next);
if (!TAILQ_EMPTY(sm_dnssl_head)) {
while ((smp1 = TAILQ_FIRST(sm_dnssl_head)) != NULL) {
TAILQ_REMOVE(sm_dnssl_head, smp1, sm_next);
free(smp1);
}
}
return (0);
return (error);
}
static struct ra_opt *
@ -709,19 +769,18 @@ find_raopt(struct rainfo *rai, int type, void *msg, size_t len)
}
static void
call_script(const int argc, const char *const argv[], void *head)
call_script(const int argc, const char *const argv[],
struct script_msg_head_t *sm_head)
{
const char *scriptpath;
int fd[2];
int error;
pid_t pid, wpid;
TAILQ_HEAD(, script_msg) *sm_head;
if ((scriptpath = argv[0]) == NULL)
return;
fd[0] = fd[1] = -1;
sm_head = head;
if (sm_head != NULL && !TAILQ_EMPTY(sm_head)) {
error = pipe(fd);
if (error) {

28
usr.sbin/rtsold/rtsold.8
View File

@ -29,7 +29,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd May 28, 2011
.Dd June 14, 2011
.Dt RTSOLD 8
.Os
.\"
@ -39,24 +39,24 @@
.\"
.Sh SYNOPSIS
.Nm
.Op Fl dDfFm1
.Op Fl dDfFmu1
.Op Fl O Ar script-name
.Op Fl P Ar pidfile
.Op Fl p Ar pidfile
.Op Fl R Ar script-name
.Ar interface ...
.Nm
.Op Fl dDfFm1
.Op Fl dDfFmu1
.Op Fl O Ar script-name
.Op Fl P Ar pidfile
.Op Fl p Ar pidfile
.Op Fl R Ar script-name
.Fl a
.Nm rtsol
.Op Fl dD
.Op Fl dDu
.Op Fl O Ar script-name
.Op Fl R Ar script-name
.Ar interface ...
.Nm rtsol
.Op Fl dD
.Op Fl dDu
.Op Fl O Ar script-name
.Op Fl R Ar script-name
.Fl a
@ -227,7 +227,7 @@ configuration.
must be the absolute path from root to the script file, be a regular
file, and be created by the same owner who runs
.Nm .
.It Fl P Ar pidfile
.It Fl p Ar pidfile
Writes the process ID of
.Nm
to
@ -245,6 +245,18 @@ standard input of this script.
The
.Xr resolvconf 8
script is used by default.
.It Fl u
Specifies whether adding the source address of Router Advertisement
messages to the interface name in an argument of the RDNSS and DNSSL
script.
.Pp
If
.Fl u
is specified, the interface name in the script argument will be
.Ql ifname:slaac:[RA-source-address] .
.Pp
If not, it will be
.Ql ifname:slaac .
.El
.Sh FILES
.Bl -tag -width /var/run/rtsold.dump -compact

49
usr.sbin/rtsold/rtsold.c
View File

@ -75,6 +75,7 @@ static int fflag = 0;
int Fflag = 0; /* force setting sysctl parameters */
int aflag = 0;
int dflag = 0;
int uflag = 0;
const char *otherconf_script;
const char *resolvconf_script = "/sbin/resolvconf";
@ -129,10 +130,10 @@ main(int argc, char **argv)
#ifndef SMALL
/* rtsold */
opts = "adDfFm1O:P:R:";
opts = "adDfFm1O:p:R:u";
#else
/* rtsol */
opts = "adDFO:P:R:";
opts = "adDFO:R:u";
fflag = 1;
once = 1;
#endif
@ -144,10 +145,10 @@ main(int argc, char **argv)
aflag = 1;
break;
case 'd':
dflag = 1;
dflag += 1;
break;
case 'D':
dflag = 2;
dflag += 2;
break;
case 'f':
fflag = 1;
@ -164,12 +165,15 @@ main(int argc, char **argv)
case 'O':
otherconf_script = optarg;
break;
case 'P':
case 'p':
pidfilename = optarg;
break;
case 'R':
resolvconf_script = optarg;
break;
case 'u':
uflag = 1;
break;
default:
usage();
exit(1);
@ -184,8 +188,13 @@ main(int argc, char **argv)
}
/* set log level */
if (dflag == 0)
if (dflag > 1)
log_upto = LOG_DEBUG;
else if (dflag > 0)
log_upto = LOG_INFO;
else
log_upto = LOG_NOTICE;
if (!fflag) {
char *ident;
@ -216,6 +225,7 @@ main(int argc, char **argv)
srandom((u_long)time(NULL));
#endif
#if (__FreeBSD_version < 900000)
if (Fflag) {
setinet6sysctl(IPV6CTL_FORWARDING, 0);
} else {
@ -223,6 +233,7 @@ main(int argc, char **argv)
if (getinet6sysctl(IPV6CTL_FORWARDING))
warnx("kernel is configured as a router, not a host");
}
#endif
#ifndef SMALL
/* initialization to dump internal status to a file */
@ -402,6 +413,32 @@ ifconfig(char *ifname)
return (-1);
}
if (Fflag) {
struct in6_ndireq nd;
int s;
if ((s = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
warnmsg(LOG_ERR, __func__, "socket() failed.");
return (-1);
}
memset(&nd, 0, sizeof(nd));
strlcpy(nd.ifname, ifname, sizeof(nd.ifname));
if (ioctl(s, SIOCGIFINFO_IN6, (caddr_t)&nd) < 0) {
warnmsg(LOG_ERR, __func__,
"cannot get accept_rtadv flag");
close(s);
return (-1);
}
nd.ndi.flags |= ND6_IFF_ACCEPT_RTADV;
if (ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd) < 0) {
warnmsg(LOG_ERR, __func__,
"cannot set accept_rtadv flag");
close(s);
return (-1);
}
close(s);
}
if ((ifi = malloc(sizeof(*ifi))) == NULL) {
warnmsg(LOG_ERR, __func__, "memory allocation failed");
free(sdl);

6
usr.sbin/rtsold/rtsold.h
View File

@ -37,6 +37,8 @@ struct script_msg {
char *sm_msg;
};
TAILQ_HEAD(script_msg_head_t, script_msg);
struct ra_opt {
TAILQ_ENTRY(ra_opt) rao_next;
@ -60,7 +62,7 @@ struct ifinfo {
TAILQ_ENTRY(ifinfo) ifi_next; /* pointer to the next interface */
struct sockaddr_dl *sdl; /* link-layer address */
char ifname[IF_NAMESIZE]; /* interface name */
char ifname[IFNAMSIZ]; /* interface name */
u_int32_t linkid; /* link ID of this interface */
int active; /* interface status */
int probeinterval; /* interval of probe timer (if necessary) */
@ -96,6 +98,7 @@ struct ifinfo {
/* Interface list */
extern TAILQ_HEAD(ifinfo_head_t, ifinfo) ifinfo_head;
#define DNSINFO_ORIGIN_LABEL "slaac"
/*
* RFC 3542 API deprecates IPV6_PKTINFO in favor of
* IPV6_RECVPKTINFO
@ -126,6 +129,7 @@ extern struct timeval tm_max;
extern int dflag;
extern int aflag;
extern int Fflag;
extern int uflag;
extern const char *otherconf_script;
extern const char *resolvconf_script;
extern int ifconfig(char *);