From 81cd72f30006e2e1757a6dc4802b5ca4bb7c8df2 Mon Sep 17 00:00:00 2001
From: Claudio Jeker <claudio@cvs.openbsd.org>
Date: Fri, 27 Sep 2019 10:34:55 +0000
Subject: Implement 'bgpctl show rib 8.8.8.8 or-shorter' to show all routes
 covering 8.8.8.8. Additionally add 'or-longer' as an alias for 'all'. OK job@
 sthen@

---
 usr.sbin/bgpctl/bgpctl.8 | 18 ++++++++++++++----
 usr.sbin/bgpctl/bgpctl.c | 28 +++++++++++++++++++---------
 usr.sbin/bgpctl/parser.c |  4 +++-
 3 files changed, 36 insertions(+), 14 deletions(-)

(limited to 'usr.sbin')

diff --git a/usr.sbin/bgpctl/bgpctl.8 b/usr.sbin/bgpctl/bgpctl.8
index 8048f16d09b..cd1f465295f 100644
--- a/usr.sbin/bgpctl/bgpctl.8
+++ b/usr.sbin/bgpctl/bgpctl.8
@@ -1,4 +1,4 @@
-.\" $OpenBSD: bgpctl.8,v 1.91 2019/09/25 15:35:50 sthen Exp $
+.\" $OpenBSD: bgpctl.8,v 1.92 2019/09/27 10:34:54 claudio Exp $
 .\"
 .\" Copyright (c) 2003 Henning Brauer <henning@openbsd.org>
 .\"
@@ -14,7 +14,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: September 25 2019 $
+.Dd $Mdocdate: September 27 2019 $
 .Dt BGPCTL 8
 .Os
 .Sh NAME
@@ -223,7 +223,7 @@ Show routes from an MRT table dump file.
 .Ar filter
 can be an IP address, a CIDR prefix, an AS filter, a combination or nothing:
 .Pp
-.Bl -tag -width "address/len all" -compact
+.Bl -tag -width "address/len or-shorter" -compact
 .It Ar address
 Show best matching route for address.
 .It Ar address Ns Li / Ns Ar len
@@ -234,6 +234,11 @@ Show RIB entry for this CIDR prefix.
 .Xc
 Show all entries in the specified range.
 .\".It Ar address/len Cm longer-prefixes
+.It Xo
+.Ar address Ns Li / Ns Ar len
+.Cm or-shorter
+.Xc
+Show all entries covering and including the specified prefix.
 .It Cm as Ar as
 Show all entries with
 .Ar as
@@ -312,7 +317,7 @@ Routing Information Base.
 .Ar filter
 can be an IP address, a CIDR prefix, an AS filter or nothing:
 .Pp
-.Bl -tag -width "address/len all" -compact
+.Bl -tag -width "address/len or-shorter" -compact
 .It Ar address
 Show best matching route for address.
 .It Ar address Ns Li / Ns Ar len
@@ -323,6 +328,11 @@ Show RIB entry for this CIDR prefix.
 .Xc
 Show all entries in the specified range.
 .\".It Ar address/len Cm longer-prefixes
+.It Xo
+.Ar address Ns Li / Ns Ar len
+.Cm or-shorter
+.Xc
+Show all entries covering and including the specified prefix.
 .It Cm as Ar as
 Show all entries with
 .Ar as
diff --git a/usr.sbin/bgpctl/bgpctl.c b/usr.sbin/bgpctl/bgpctl.c
index 10f2b5c3cf4..6fa5b76e992 100644
--- a/usr.sbin/bgpctl/bgpctl.c
+++ b/usr.sbin/bgpctl/bgpctl.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: bgpctl.c,v 1.245 2019/09/25 15:35:50 sthen Exp $ */
+/*	$OpenBSD: bgpctl.c,v 1.246 2019/09/27 10:34:54 claudio Exp $ */
 
 /*
  * Copyright (c) 2003 Henning Brauer <henning@openbsd.org>
@@ -2132,15 +2132,25 @@ show_mrt_dump(struct mrt_rib *mr, struct mrt_peer *mp, void *arg)
 			return;
 		/* filter by prefix */
 		if (req->prefix.aid != AID_UNSPEC) {
-			if (!prefix_compare(&req->prefix, &ctl.prefix,
-			    req->prefixlen)) {
-				if (req->flags & F_LONGER) {
-					if (req->prefixlen > ctl.prefixlen)
-						return;
-				} else if (req->prefixlen != ctl.prefixlen)
+			if (req->flags & F_LONGER) {
+				if (req->prefixlen > ctl.prefixlen)
 					return;
-			} else
-				return;
+				if (prefix_compare(&req->prefix, &ctl.prefix,
+				    req->prefixlen))
+					return;
+			} else if (req->flags & F_SHORTER) {
+				if (req->prefixlen < ctl.prefixlen)
+					return;
+				if (prefix_compare(&req->prefix, &ctl.prefix,
+				    ctl.prefixlen))
+					return;
+			} else {
+				if (req->prefixlen != ctl.prefixlen)
+					return;
+				if (prefix_compare(&req->prefix, &ctl.prefix,
+				    req->prefixlen))
+					return;
+			}
 		}
 		/* filter by AS */
 		if (req->as.type != AS_UNDEF &&
diff --git a/usr.sbin/bgpctl/parser.c b/usr.sbin/bgpctl/parser.c
index e984596d4d9..6ce663d938c 100644
--- a/usr.sbin/bgpctl/parser.c
+++ b/usr.sbin/bgpctl/parser.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: parser.c,v 1.98 2019/06/28 12:12:06 claudio Exp $ */
+/*	$OpenBSD: parser.c,v 1.99 2019/09/27 10:34:54 claudio Exp $ */
 
 /*
  * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
@@ -305,6 +305,8 @@ static const struct token t_show_prefix[] = {
 	{ NOTOKEN,	"",		NONE,		NULL},
 	{ FLAG,		"all",		F_LONGER,	NULL},
 	{ FLAG,		"longer-prefixes", F_LONGER,	NULL},
+	{ FLAG,		"or-longer", 	F_LONGER,	NULL},
+	{ FLAG,		"or-shorter", 	F_SHORTER,	NULL},
 	{ ENDTOKEN,	"",		NONE,		NULL}
 };
 
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