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improve decoding of unknown BGP attributes. 

svn path=/trunk/; revision=849
This commit is contained in:
Jun-ichiro itojun Hagino 1999-10-16 00:21:07 +00:00
parent 212c95dd4a
commit e77e86c543
1 changed files with 27 additions and 1 deletions
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28
packet-bgp.c
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@ -2,7 +2,7 @@
* Routines for BGP packet dissection
* Copyright 1999, Jun-ichiro itojun Hagino <itojun@itojun.org>
*
* $Id: packet-bgp.c,v 1.1 1999/10/15 17:00:46 itojun Exp $
* $Id: packet-bgp.c,v 1.2 1999/10/16 00:21:07 itojun Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@unicom.net>
@ -156,6 +156,8 @@ static const value_string bgpattr_origin[] = {
#define BGPTYPE_LOCAL_PREF 5
#define BGPTYPE_ATOMIC_AGGREGATE 6
#define BGPTYPE_AGGREGATOR 7
#define BGPTYPE_MP_REACH_NLRI 14 /* RFC2283 */
#define BGPTYPE_MP_UNREACH_NLRI 15 /* RFC2283 */
static const value_string bgpattr_type[] = {
{ BGPTYPE_ORIGIN, "ORIGIN" },
@ -165,6 +167,16 @@ static const value_string bgpattr_type[] = {
{ BGPTYPE_LOCAL_PREF, "LOCAL_PREF" },
{ BGPTYPE_ATOMIC_AGGREGATE, "ATOMIC_AGGREGATE" },
{ BGPTYPE_AGGREGATOR, "AGGREGATOR" },
{ BGPTYPE_MP_REACH_NLRI, "MP_REACH_NLRI" },
{ BGPTYPE_MP_UNREACH_NLRI, "MP_UNREACH_NLRI" },
{ 0, NULL },
};
/* Subsequent address family identifier, RFC2283 section 7 */
static const value_string bgpattr_nlri_safi[] = {
{ 1, "Unicast" },
{ 2, "Multicast" },
{ 3, "Unicast+Multicast" },
{ 0, NULL },
};
@ -284,6 +296,16 @@ dissect_bgp_update(const u_char *pd, int offset, frame_data *fd,
val_to_str(bgpa.bgpa_type, bgpattr_type, "Unknown"),
bgpa.bgpa_type);
if (bgpa.bgpa_flags & 0x10) {
proto_tree_add_text(subtree2,
p - pd + i + sizeof(bgpa), aoff - sizeof(bgpa),
"Attribute length: %d", alen);
} else {
proto_tree_add_text(subtree2,
p - pd + i + sizeof(bgpa), aoff - sizeof(bgpa),
"Attribute length: %d", alen);
}
switch (bgpa.bgpa_type) {
case BGPTYPE_ORIGIN:
if (alen != 1) {
@ -372,6 +394,10 @@ dissect_bgp_update(const u_char *pd, int offset, frame_data *fd,
ip_to_str(&p[i + aoff + 2]));
}
break;
default:
proto_tree_add_text(subtree2, p - pd + i + aoff, alen,
"Unknown (%d bytes)", alen);
break;
}
i += alen + aoff;