Controller for the ripd.

All relevant information in the rip daemon can be displayed with this
controller.

Not connected to builds yet.

ok claudio@

5 files changed, 1011 insertions, 0 deletions

diff --git a/usr.sbin/ripctl/Makefile b/usr.sbin/ripctl/Makefile
new file mode 100644
index 00000000000..30d20253947
--- /dev/null
+++ b/usr.sbin/ripctl/Makefile
@@ -0,0 +1,15 @@
+#	$OpenBSD: Makefile,v 1.1 2006/10/18 16:15:25 norby Exp $
+
+.PATH:		${.CURDIR}/../ripd
+
+PROG=	ripctl
+SRCS=	buffer.c imsg.c log.c ripctl.c parser.c
+CFLAGS+= -Wall
+CFLAGS+= -Wstrict-prototypes -Wmissing-prototypes
+CFLAGS+= -Wmissing-declarations
+CFLAGS+= -Wshadow -Wpointer-arith -Wcast-qual
+CFLAGS+= -Wsign-compare
+CFLAGS+= -I${.CURDIR} -I${.CURDIR}/../ripd
+MAN=	ripctl.8
+
+.include <bsd.prog.mk>
diff --git a/usr.sbin/ripctl/parser.c b/usr.sbin/ripctl/parser.c
new file mode 100644
index 00000000000..f6b18ed1349
--- /dev/null
+++ b/usr.sbin/ripctl/parser.c
@@ -0,0 +1,304 @@
+/*	$OpenBSD: parser.c,v 1.1 2006/10/18 16:15:25 norby Exp $ */
+
+/*
+ * Copyright (c) 2006 Michele Marchetto <mydecay@openbeer.it>
+ * Copyright (c) 2004 Esben Norby <norby@openbsd.org>
+ * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <err.h>
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "ripd.h"
+
+#include "parser.h"
+
+enum token_type {
+	NOTOKEN,
+	ENDTOKEN,
+	KEYWORD,
+	ADDRESS,
+	FLAG,
+	PREFIX,
+	IFNAME
+};
+
+struct token {
+	enum token_type		 type;
+	const char		*keyword;
+	int			 value;
+	const struct token	*next;
+};
+
+static const struct token t_main[];
+static const struct token t_fib[];
+static const struct token t_show[];
+static const struct token t_show_iface[];
+static const struct token t_show_db[];
+static const struct token t_show_area[];
+static const struct token t_show_nbr[];
+static const struct token t_show_rib[];
+static const struct token t_show_fib[];
+
+static const struct token t_main[] = {
+/*	{KEYWORD,	"reload",	RELOAD,		NULL}, */
+	{KEYWORD,	"fib",		FIB,		t_fib},
+	{KEYWORD,	"show",		SHOW,		t_show},
+	{ENDTOKEN,	"",		NONE,		NULL}
+};
+
+static const struct token t_fib[] = {
+	{ KEYWORD,	"couple",	FIB_COUPLE,	NULL},
+	{ KEYWORD,	"decouple",	FIB_DECOUPLE,	NULL},
+	{ ENDTOKEN,	"",		NONE,		NULL}
+};
+
+static const struct token t_show[] = {
+	{NOTOKEN,	"",		NONE,		NULL},
+	{KEYWORD,	"interfaces",	SHOW_IFACE,	t_show_iface},
+	{KEYWORD,	"neighbor",	SHOW_NBR,	t_show_nbr},
+	{KEYWORD,	"rib",		SHOW_RIB,	t_show_rib},
+	{KEYWORD,	"fib",		SHOW_FIB,	t_show_fib},
+	{ENDTOKEN,	"",		NONE,		NULL}
+};
+
+static const struct token t_show_iface[] = {
+	{NOTOKEN,	"",		NONE,			NULL},
+	{ENDTOKEN,	"",		NONE,			NULL}
+};
+
+static const struct token t_show_nbr[] = {
+	{NOTOKEN,	"",		NONE,		NULL},
+	{ENDTOKEN,	"",		NONE,		NULL}
+};
+
+static const struct token t_show_rib[] = {
+	{NOTOKEN,	"",		NONE,		NULL},
+	{ENDTOKEN,	"",		NONE,		NULL}
+};
+
+static const struct token t_show_fib[] = {
+	{NOTOKEN,	"",		NONE,			NULL},
+	{KEYWORD,	"interface",	SHOW_FIB_IFACE,		t_show_iface},
+	{FLAG,		"connected",	F_CONNECTED,		t_show_fib},
+	{FLAG,		"static",	F_STATIC,		t_show_fib},
+	{FLAG,		"rip",		F_RIPD_INSERTED,	t_show_fib},
+	{ADDRESS,	"",		NONE,			NULL},
+	{ENDTOKEN,	"",		NONE,			NULL}
+};
+
+static struct parse_result	res;
+
+struct parse_result *
+parse(int argc, char *argv[])
+{
+	const struct token	*table = t_main;
+	const struct token	*match;
+
+	bzero(&res, sizeof(res));
+
+	while (argc > 0) {
+		if ((match = match_token(argv[0], table)) == NULL) {
+			fprintf(stderr, "valid commands/args:\n");
+			show_valid_args(table);
+			return (NULL);
+		}
+
+		argc--;
+		argv++;
+
+		if (match->type == NOTOKEN || match->next == NULL)
+			break;
+
+		table = match->next;
+	}
+
+	if (argc > 0) {
+		fprintf(stderr, "superfluous argument: %s\n", argv[0]);
+		return (NULL);
+	}
+
+	return (&res);
+}
+
+const struct token *
+match_token(const char *word, const struct token table[])
+{
+	u_int			 i, match;
+	const struct token	*t = NULL;
+
+	match = 0;
+
+	for (i = 0; table[i].type != ENDTOKEN; i++) {
+		switch (table[i].type) {
+		case NOTOKEN:
+			if (word == NULL || strlen(word) == 0) {
+				match++;
+				t = &table[i];
+			}
+			break;
+		case KEYWORD:
+			if (word != NULL && strncmp(word, table[i].keyword,
+			    strlen(word)) == 0) {
+				match++;
+				t = &table[i];
+				if (t->value)
+					res.action = t->value;
+			}
+			break;
+		case FLAG:
+			if (word != NULL && strncmp(word, table[i].keyword,
+			    strlen(word)) == 0) {
+				match++;
+				t = &table[i];
+				res.flags |= t->value;
+			}
+			break;
+		case ADDRESS:
+			if (parse_addr(word, &res.addr)) {
+				match++;
+				t = &table[i];
+				if (t->value)
+					res.action = t->value;
+			}
+			break;
+		case PREFIX:
+			if (parse_prefix(word, &res.addr, &res.prefixlen)) {
+				match++;
+				t = &table[i];
+				if (t->value)
+					res.action = t->value;
+			}
+			break;
+		case IFNAME:
+			if (!match && word != NULL && strlen(word) > 0) {
+				if (strlcpy(res.ifname, word,
+				    sizeof(res.ifname)) >=
+				    sizeof(res.ifname))
+					err(1, "interface name too long");
+				match++;
+				t = &table[i];
+				if (t->value)
+					res.action = t->value;
+			}
+			break;
+
+		case ENDTOKEN:
+			break;
+		}
+	}
+
+	if (match != 1) {
+		if (match > 1)
+			fprintf(stderr, "ambiguous argument: %s\n", word);
+		if (match < 1)
+			fprintf(stderr, "unknown argument: %s\n", word);
+		return (NULL);
+	}
+
+	return (t);
+}
+
+void
+show_valid_args(const struct token table[])
+{
+	int	i;
+
+	for (i = 0; table[i].type != ENDTOKEN; i++) {
+		switch (table[i].type) {
+		case NOTOKEN:
+			fprintf(stderr, "  <cr>\n");
+			break;
+		case KEYWORD:
+		case FLAG:
+			fprintf(stderr, "  %s\n", table[i].keyword);
+			break;
+		case ADDRESS:
+			fprintf(stderr, "  <address>\n");
+			break;
+		case PREFIX:
+			fprintf(stderr, "  <address>[/<len>]\n");
+			break;
+		case IFNAME:
+			fprintf(stderr, "  <interface>\n");
+		case ENDTOKEN:
+			break;
+		}
+	}
+}
+
+int
+parse_addr(const char *word, struct in_addr *addr)
+{
+	struct in_addr	ina;
+
+	if (word == NULL)
+		return (0);
+
+	bzero(addr, sizeof(struct in_addr));
+	bzero(&ina, sizeof(ina));
+
+	if (inet_pton(AF_INET, word, &ina)) {
+		addr->s_addr = ina.s_addr;
+		return (1);
+	}
+
+	return (0);
+}
+
+int
+parse_prefix(const char *word, struct in_addr *addr, u_int8_t *prefixlen)
+{
+	struct in_addr	 ina;
+	int		 bits = 32;
+
+	if (word == NULL)
+		return (0);
+
+	bzero(addr, sizeof(struct in_addr));
+	bzero(&ina, sizeof(ina));
+
+	if (strrchr(word, '/') != NULL) {
+		if ((bits = inet_net_pton(AF_INET, word,
+		    &ina, sizeof(ina))) == -1)
+			return (0);
+		addr->s_addr = ina.s_addr & htonl(prefixlen2mask(bits));
+		*prefixlen = bits;
+		return (1);
+	} else {
+		*prefixlen = 32;
+		return (parse_addr(word, addr));
+	}
+
+	return (0);
+}
+
+/* XXX local copy from kroute.c, should go to shared file */
+in_addr_t
+prefixlen2mask(u_int8_t prefixlen)
+{
+	if (prefixlen == 0)
+		return (0);
+
+	return (0xffffffff << (32 - prefixlen));
+}
diff --git a/usr.sbin/ripctl/parser.h b/usr.sbin/ripctl/parser.h
new file mode 100644
index 00000000000..7ab1bba7979
--- /dev/null
+++ b/usr.sbin/ripctl/parser.h
@@ -0,0 +1,57 @@
+/*	$OpenBSD: parser.h,v 1.1 2006/10/18 16:15:25 norby Exp $ */
+
+/*
+ * Copyright (c) 2006 Michele Marchetto <mydecay@openbeer.it>
+ * Copyright (c) 2004 Esben Norby <norby@openbsd.org>
+ * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _PARSER_H_
+#define _PARSER_H_
+
+#include <sys/types.h>
+#include <net/if.h>
+#include <netinet/in.h>
+
+enum actions {
+	NONE,
+	FIB,
+	FIB_COUPLE,
+	FIB_DECOUPLE,
+	SHOW,
+	SHOW_IFACE,
+	SHOW_NBR,
+	SHOW_RIB,
+	SHOW_FIB,
+	SHOW_FIB_IFACE,
+	RELOAD
+};
+
+struct parse_result {
+	struct in_addr	addr;
+	char		ifname[IF_NAMESIZE];
+	int		flags;
+	enum actions	action;
+	u_int8_t	prefixlen;
+};
+
+struct parse_result	*parse(int, char *[]);
+const struct token	*match_token(const char *, const struct token []);
+void			 show_valid_args(const struct token []);
+int			 parse_addr(const char *, struct in_addr *);
+int			 parse_prefix(const char *, struct in_addr *,
+			     u_int8_t *);
+
+#endif	/* _PARSER_H_ */
diff --git a/usr.sbin/ripctl/ripctl.8 b/usr.sbin/ripctl/ripctl.8
new file mode 100644
index 00000000000..918ddebad98
--- /dev/null
+++ b/usr.sbin/ripctl/ripctl.8
@@ -0,0 +1,96 @@
+.\"	$OpenBSD: ripctl.8,v 1.1 2006/10/18 16:15:25 norby Exp $
+.\"
+.\" Copyright (c) 2006 Michele Marchetto <mydecay@openbeer.it>
+.\" Copyright (c) 2004, 2005 Esben Norby <norby@openbsd.org>
+.\"
+.\" Permission to use, copy, modify, and distribute this software for any
+.\" purpose with or without fee is hereby granted, provided that the above
+.\" copyright notice and this permission notice appear in all copies.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+.\"
+.Dd June 27, 2006
+.Dt RIPCTL 8
+.Os
+.Sh NAME
+.Nm ripctl
+.Nd control the Routing Information Protocol daemon
+.Sh SYNOPSIS
+.Nm
+.Ar command
+.Op Ar arguments ...
+.Sh DESCRIPTION
+The
+.Nm
+program controls the
+.Xr ripd 8
+daemon.
+.Pp
+The following commands are available:
+.Bl -tag -width Ds
+.It Cm fib couple
+Insert the learned routes into the Forward Information Base a.k.a. the kernel
+routing table.
+.It Cm fib decouple
+Remove the learned routes from the Forward Information Base a.k.a. the kernel
+routing table.
+Decoupling the FIB from an RIP router may create routing loops and could cause
+major routing issues.
+.It Cm show fib Op Ar destination | filter
+Show the Forwarding Information Base.
+.Ar destination
+can be specified to show the route matching a destination IP address.
+.Ar filter
+can be any of the following:
+.Pp
+.Bl -tag -width "interfaceXXinterfaceXX" -compact
+.It Cm connected
+Show only connected routes.
+.It Cm interface Op Ar interface
+Show only interfaces or the specified
+.Ar interface .
+.It Cm rip
+Show only RIP routes.
+.It Cm static
+Show only static routes.
+.El
+.Pp
+.Cm connected ,
+.Cm rip ,
+and
+.Cm static
+may be specified together.
+.It Cm show interfaces Op Ar interface
+Show details for all interfaces or the specified
+.Ar interface .
+.It Cm show neighbor Op Cm detail
+Show neighbors.
+.Cm detail
+can be specified for additional detail.
+.It Cm show rib Op Cm detail
+Show the Routing Information Base.
+.Cm detail
+can be specified for additional detail.
+.It Cm show summary
+Show summary information.
+.El
+.Sh FILES
+.Bl -tag -width "/var/run/ripd.sockXX" -compact
+.It /var/run/ripd.sock
+Unix-domain socket used for communication with
+.Xr ripd 8 .
+.El
+.Sh SEE ALSO
+.Xr ripd.conf 5 ,
+.Xr ripd 8
+.Sh HISTORY
+The
+.Nm
+program first appeared in
+.Ox 4.0 .
diff --git a/usr.sbin/ripctl/ripctl.c b/usr.sbin/ripctl/ripctl.c
new file mode 100644
index 00000000000..d4ce6d45aa2
--- /dev/null
+++ b/usr.sbin/ripctl/ripctl.c
@@ -0,0 +1,539 @@
+/*	$OpenBSD: ripctl.c,v 1.1 2006/10/18 16:15:25 norby Exp $
+ *
+ * Copyright (c) 2006 Michele Marchetto <mydecay@openbeer.it>
+ * Copyright (c) 2005 Claudio Jeker <claudio@openbsd.org>
+ * Copyright (c) 2004, 2005 Esben Norby <norby@openbsd.org>
+ * Copyright (c) 2003 Henning Brauer <henning@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <net/if_media.h>
+#include <net/if_types.h>
+
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "rip.h"
+#include "ripd.h"
+#include "ripe.h"
+#include "parser.h"
+
+__dead void	 usage(void);
+const char	*fmt_timeframe_core(time_t);
+const char	*get_linkstate(int, int);
+int		 show_interface_msg(struct imsg *);
+int		 get_ifms_type(int);
+int		 show_rib_msg(struct imsg *);
+int		 show_nbr_msg(struct imsg *);
+void		 show_fib_head(void);
+int		 show_fib_msg(struct imsg *);
+void		 show_interface_head(void);
+int		 show_fib_interface_msg(struct imsg *);
+const char	*get_media_descr(int);
+void		 print_baudrate(u_long);
+
+struct imsgbuf	*ibuf;
+
+__dead void
+usage(void)
+{
+	extern char *__progname;
+
+	fprintf(stderr, "usage: %s <command> [arg [...]]\n", __progname);
+	exit(1);
+}
+
+/* dummy function to allow ripctl to run without libevent */
+void
+imsg_event_add(struct imsgbuf *i)
+{
+}
+
+int
+main(int argc, char *argv[])
+{
+	struct sockaddr_un	 sun;
+	struct parse_result	*res;
+	struct imsg		 imsg;
+	unsigned int		 ifidx = 0;
+	int			 ctl_sock;
+	int			 done = 0;
+	int			 n;
+
+	/* parse options */
+	if ((res = parse(argc - 1, argv + 1)) == NULL)
+		exit(1);
+
+	/* connect to ripd control socket */
+	if ((ctl_sock = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
+		err(1, "socket");
+
+	bzero(&sun, sizeof(sun));
+	sun.sun_family = AF_UNIX;
+	strlcpy(sun.sun_path, RIPD_SOCKET, sizeof(sun.sun_path));
+	if (connect(ctl_sock, (struct sockaddr *)&sun, sizeof(sun)) == -1)
+		err(1, "connect: %s", RIPD_SOCKET);
+
+	if ((ibuf = malloc(sizeof(struct imsgbuf))) == NULL)
+		err(1, NULL);
+	imsg_init(ibuf, ctl_sock, NULL);
+	done = 0;
+
+	/* process user request */
+	switch (res->action) {
+	case NONE:
+		usage();
+		/* not reached */
+	case SHOW:
+	case SHOW_IFACE:
+		printf("%-11s %-18s %-10s %-10s %-8s\n",
+		    "Interface", "Address", "State", "Linkstate",
+		    "Uptime");
+		if (*res->ifname) {
+			ifidx = if_nametoindex(res->ifname);
+			if (ifidx == 0)
+				errx(1, "no such interface %s", res->ifname);
+		}
+		imsg_compose(ibuf, IMSG_CTL_SHOW_INTERFACE, 0, 0,
+		    &ifidx, sizeof(ifidx));
+		break;
+	case SHOW_NBR:
+		printf("%-15s %-15s %-15s %-9s %-10s\n", "ID",
+		    "State", "Address", "Iface", "Uptime");
+		imsg_compose(ibuf, IMSG_CTL_SHOW_NBR, 0, 0, NULL, 0);
+		break;
+	case SHOW_RIB:
+		printf("%-20s %-17s %-7s\n", "Destination",
+		    "Nexthop", "Cost");
+		imsg_compose(ibuf, IMSG_CTL_SHOW_RIB, 0, 0, NULL, 0);
+		break;
+	case SHOW_FIB:
+		if (!res->addr.s_addr)
+			imsg_compose(ibuf, IMSG_CTL_KROUTE, 0, 0,
+			    &res->flags, sizeof(res->flags));
+		else
+			imsg_compose(ibuf, IMSG_CTL_KROUTE_ADDR, 0, 0,
+			    &res->addr, sizeof(res->addr));
+		show_fib_head();
+		break;
+	case SHOW_FIB_IFACE:
+		if (*res->ifname)
+			imsg_compose(ibuf, IMSG_CTL_IFINFO, 0, 0,
+			    res->ifname, sizeof(res->ifname));
+		else
+			imsg_compose(ibuf, IMSG_CTL_IFINFO, 0, 0, NULL, 0);
+		show_interface_head();
+		break;
+	case FIB:
+		errx(1, "fib couple|decouple");
+		break;
+	case FIB_COUPLE:
+		imsg_compose(ibuf, IMSG_CTL_FIB_COUPLE, 0, 0, NULL, 0);
+		printf("couple request sent.\n");
+		done = 1;
+		break;
+	case FIB_DECOUPLE:
+		imsg_compose(ibuf, IMSG_CTL_FIB_DECOUPLE, 0, 0, NULL, 0);
+		printf("decouple request sent.\n");
+		done = 1;
+		break;
+	case RELOAD:
+		imsg_compose(ibuf, IMSG_CTL_RELOAD, 0, 0, NULL, 0);
+		printf("reload request sent.\n");
+		done = 1;
+		break;
+	}
+
+	while (ibuf->w.queued)
+		if (msgbuf_write(&ibuf->w) < 0)
+			err(1, "write error");
+
+	while (!done) {
+		if ((n = imsg_read(ibuf)) == -1)
+			errx(1, "imsg_read error");
+		if (n == 0)
+			errx(1, "pipe closed");
+
+		while (!done) {
+			if ((n = imsg_get(ibuf, &imsg)) == -1)
+				errx(1, "imsg_get error");
+			if (n == 0)
+				break;
+			switch (res->action) {
+			case SHOW:
+			case SHOW_IFACE:
+				done = show_interface_msg(&imsg);
+				break;
+			case SHOW_NBR:
+				done = show_nbr_msg(&imsg);
+				break;
+			case SHOW_RIB:
+				done = show_rib_msg(&imsg);
+				break;
+			case SHOW_FIB:
+				done = show_fib_msg(&imsg);
+				break;
+			case SHOW_FIB_IFACE:
+				done = show_fib_interface_msg(&imsg);
+				break;
+			case NONE:
+			case FIB:
+			case FIB_COUPLE:
+			case FIB_DECOUPLE:
+			case RELOAD:
+				break;
+			}
+			imsg_free(&imsg);
+		}
+	}
+	close(ctl_sock);
+	free(ibuf);
+
+	return (0);
+}
+
+int
+get_ifms_type(int mediatype)
+{
+	switch (mediatype) {
+	case IFT_ETHER:
+		return (IFM_ETHER);
+		break;
+	case IFT_FDDI:
+		return (IFM_FDDI);
+		break;
+	case IFT_ISO88025:
+		return (IFM_TOKEN);
+		break;
+	case IFT_CARP:
+		return (IFM_CARP);
+		break;
+	default:
+		return (0);
+		break;
+	}
+}
+
+#define	TF_BUFS	8
+#define	TF_LEN	9
+
+const char *
+fmt_timeframe_core(time_t t)
+{
+	char		*buf;
+	static char	 tfbuf[TF_BUFS][TF_LEN];	/* ring buffer */
+	static int	 idx = 0;
+	unsigned	 sec, min, hrs, day, week;
+
+	if (t == 0)
+		return ("Stopped");
+
+	buf = tfbuf[idx++];
+	if (idx == TF_BUFS)
+		idx = 0;
+
+	week = t;
+
+	sec = week % 60;
+	week /= 60;
+	min = week % 60;
+	week /= 60;
+	hrs = week % 24;
+	week /= 24;
+	day = week % 7;
+	week /= 7;
+
+	if (week > 0)
+		snprintf(buf, TF_LEN, "%02uw%01ud%02uh", week, day, hrs);
+	else if (day > 0)
+		snprintf(buf, TF_LEN, "%01ud%02uh%02um", day, hrs, min);
+	else
+		snprintf(buf, TF_LEN, "%02u:%02u:%02u", hrs, min, sec);
+
+	return (buf);
+}
+
+/* prototype defined in ripd.h and shared with the kroute.c version */
+u_int8_t
+mask2prefixlen(in_addr_t ina)
+{
+	if (ina == 0)
+		return (0);
+	else
+		return (33 - ffs(ntohl(ina)));
+}
+
+int
+show_interface_msg(struct imsg *imsg)
+{
+	struct ctl_iface	*iface;
+	char			*netid;
+
+	switch (imsg->hdr.type) {
+	case IMSG_CTL_SHOW_IFACE:
+		iface = imsg->data;
+
+		if (asprintf(&netid, "%s/%d", inet_ntoa(iface->addr),
+		    mask2prefixlen(iface->mask.s_addr)) == -1)
+			err(1, NULL);
+		printf("%-11s %-18s %-10s %-10s %-8s\n",
+		    iface->name, netid, if_state_name(iface->state),
+		    get_linkstate(get_ifms_type(iface->mediatype),
+		    iface->linkstate), iface->uptime == 0 ? "00:00:00" :
+		    fmt_timeframe_core(iface->uptime));
+		free(netid);
+		break;
+	case IMSG_CTL_END:
+		printf("\n");
+		return (1);
+	default:
+		break;
+	}
+
+	return (0);
+}
+
+int
+show_rib_msg(struct imsg *imsg)
+{
+	struct ctl_rt	*rt;
+	char		*dstnet;
+
+	switch (imsg->hdr.type) {
+	case IMSG_CTL_SHOW_RIB:
+		rt = imsg->data;
+		if (asprintf(&dstnet, "%s/%d", inet_ntoa(rt->prefix),
+		    mask2prefixlen(rt->netmask.s_addr)) == -1)
+			err(1, NULL);
+
+		printf("%-20s %-17s %-7d\n", dstnet,
+		    inet_ntoa(rt->nexthop),
+		    rt->metric);
+		free(dstnet);
+
+		break;
+	case IMSG_CTL_END:
+		printf("\n");
+		return (1);
+	default:
+		break;
+	}
+
+	return (0);
+}
+
+int
+show_nbr_msg(struct imsg *imsg)
+{
+	struct ctl_nbr	*nbr;
+	char		*state;
+
+	switch (imsg->hdr.type) {
+	case IMSG_CTL_SHOW_NBR:
+		nbr = imsg->data;
+		if (asprintf(&state, "%s/%s", nbr_state_name(nbr->nbr_state),
+		    if_state_name(nbr->iface_state)) == -1)
+			err(1, NULL);
+		printf("%-15s %-16s", inet_ntoa(nbr->id),
+		    state);
+		printf("%-15s %-10s", inet_ntoa(nbr->addr), nbr->name);
+		printf("%-15s\n", nbr->uptime == 0 ? "-" :
+		    fmt_timeframe_core(nbr->uptime));
+		free(state);
+		break;
+	case IMSG_CTL_END:
+		printf("\n");
+		return (1);
+	default:
+		break;
+	}
+
+	return (0);
+}
+
+void
+show_fib_head(void)
+{
+	printf("flags: * = valid, R = RIP, C = Connected, S = Static\n");
+	printf("%-6s %-20s %-17s\n", "Flags", "Destination", "Nexthop");
+}
+
+int
+show_fib_msg(struct imsg *imsg)
+{
+	struct kroute		*k;
+	char			*p;
+
+	switch (imsg->hdr.type) {
+	case IMSG_CTL_KROUTE:
+		if (imsg->hdr.len < IMSG_HEADER_SIZE + sizeof(struct kroute))
+			errx(1, "wrong imsg len");
+		k = imsg->data;
+
+		if (k->flags & F_DOWN)
+			printf(" ");
+		else
+			printf("*");
+
+		if (!(k->flags & F_KERNEL))
+			printf("R");
+		else if (k->flags & F_CONNECTED)
+			printf("C");
+		else if (k->flags & F_STATIC)
+			printf("S");
+		else
+			printf(" ");
+
+		printf("     ");
+		if (asprintf(&p, "%s/%u", inet_ntoa(k->prefix),
+		    mask2prefixlen(k->netmask.s_addr)) == -1)
+			err(1, NULL);
+		printf("%-20s ", p);
+		free(p);
+
+		if (k->nexthop.s_addr)
+			printf("%s", inet_ntoa(k->nexthop));
+		else if (k->flags & F_CONNECTED)
+			printf("link#%u", k->ifindex);
+		printf("\n");
+
+		break;
+	case IMSG_CTL_END:
+		printf("\n");
+		return (1);
+	default:
+		break;
+	}
+
+	return (0);
+}
+
+void
+show_interface_head(void)
+{
+	printf("%-15s%-15s%s\n", "Interface", "Flags",
+	    "Link state");
+}
+
+int
+show_fib_interface_msg(struct imsg *imsg)
+{
+	struct kif	*k;
+	int		 ifms_type;
+
+	switch (imsg->hdr.type) {
+	case IMSG_CTL_IFINFO:
+		k = imsg->data;
+		printf("%-15s", k->ifname);
+		printf("%-15s", k->flags & IFF_UP ? "UP" : "");
+		switch (k->media_type) {
+		case IFT_ETHER:
+			ifms_type = IFM_ETHER;
+			break;
+		case IFT_FDDI:
+			ifms_type = IFM_FDDI;
+			break;
+		case IFT_ISO88025:
+			ifms_type = IFM_TOKEN;
+			break;
+		case IFT_CARP:
+			ifms_type = IFM_CARP;
+			break;
+		default:
+			ifms_type = 0;
+			break;
+		}
+
+		if (ifms_type)
+			printf("%s, %s", get_media_descr(ifms_type),
+			    get_linkstate(ifms_type, k->link_state));
+		else if (k->link_state == LINK_STATE_UNKNOWN)
+			printf("unknown");
+		else
+			printf("link state %u", k->link_state);
+
+		if (k->link_state != LINK_STATE_DOWN && k->baudrate > 0) {
+			printf(", ");
+			print_baudrate(k->baudrate);
+		}
+		printf("\n");
+		break;
+	case IMSG_CTL_END:
+		printf("\n");
+		return (1);
+	default:
+		break;
+	}
+
+	return (0);
+}
+
+const int	ifm_status_valid_list[] = IFM_STATUS_VALID_LIST;
+const struct ifmedia_status_description
+		ifm_status_descriptions[] = IFM_STATUS_DESCRIPTIONS;
+const struct ifmedia_description
+		ifm_type_descriptions[] = IFM_TYPE_DESCRIPTIONS;
+
+const char *
+get_media_descr(int media_type)
+{
+	const struct ifmedia_description	*p;
+
+	for (p = ifm_type_descriptions; p->ifmt_string != NULL; p++)
+		if (media_type == p->ifmt_word)
+			return (p->ifmt_string);
+
+	return ("unknown");
+}
+
+const char *
+get_linkstate(int media_type, int link_state)
+{
+	const struct ifmedia_status_description	*p;
+	int					 i;
+
+	if (link_state == LINK_STATE_UNKNOWN)
+		return ("unknown");
+
+	for (i = 0; ifm_status_valid_list[i] != 0; i++)
+		for (p = ifm_status_descriptions; p->ifms_valid != 0; p++) {
+			if (p->ifms_type != media_type ||
+			    p->ifms_valid != ifm_status_valid_list[i])
+				continue;
+			return (p->ifms_string[link_state == LINK_STATE_UP]);
+		}
+
+	return ("unknown link state");
+}
+
+void
+print_baudrate(u_long baudrate)
+{
+	if (baudrate > IF_Gbps(1))
+		printf("%lu GBit/s", baudrate / IF_Gbps(1));
+	else if (baudrate > IF_Mbps(1))
+		printf("%lu MBit/s", baudrate / IF_Mbps(1));
+	else if (baudrate > IF_Kbps(1))
+		printf("%lu KBit/s", baudrate / IF_Kbps(1));
+	else
+		printf("%lu Bit/s", baudrate);
+}