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

- 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)

4 files changed, 164 insertions, 52 deletions

diff --git a/usr.sbin/rtsold/rtsol.c b/usr.sbin/rtsold/rtsol.c
index 13845f3..850e5d9 100644
--- a/usr.sbin/rtsold/rtsol.c
+++ b/usr.sbin/rtsold/rtsol.c
@@ -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 @@ free2:
 free1:
 			free(smp1);
 		}
-	}
+		/* Call the script for each information source. */
+		if (uflag)
+			ra_opt_rdnss_dispatch(ifi, rai, &sm_rdnss_head,
+			    &sm_dnssl_head);
+	}
+	/* Call the script for each interface. */
+	if (!uflag)
+		ra_opt_rdnss_dispatch(ifi, NULL, &sm_rdnss_head,
+		    &sm_dnssl_head);
+	return (0);
+}
+
+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_handler_freeit);
+	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 (!TAILQ_EMPTY(&sm_rdnss_head))
-		CALL_SCRIPT(RESADD, &sm_rdnss_head);
+		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 @@ free1:
 		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) {
diff --git a/usr.sbin/rtsold/rtsold.8 b/usr.sbin/rtsold/rtsold.8
index 8eb2539..97b6000 100644
--- a/usr.sbin/rtsold/rtsold.8
+++ b/usr.sbin/rtsold/rtsold.8
@@ -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
diff --git a/usr.sbin/rtsold/rtsold.c b/usr.sbin/rtsold/rtsold.c
index 94046a1..7df0ec6 100644
--- a/usr.sbin/rtsold/rtsold.c
+++ b/usr.sbin/rtsold/rtsold.c
@@ -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);
diff --git a/usr.sbin/rtsold/rtsold.h b/usr.sbin/rtsold/rtsold.h
index 0aa9b4f..3ab010f 100644
--- a/usr.sbin/rtsold/rtsold.h
+++ b/usr.sbin/rtsold/rtsold.h
@@ -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 *);