#ifndef lint
static const char rcsid[] =
- "@(#) $Header: /tcpdump/master/tcpdump/print-bgp.c,v 1.36 2002-07-14 14:14:51 hannes Exp $";
+ "@(#) $Header: /tcpdump/master/tcpdump/print-bgp.c,v 1.39 2002-07-22 14:09:07 hannes Exp $";
#endif
#include <sys/param.h>
#define BGP_UPDATE 2
#define BGP_NOTIFICATION 3
#define BGP_KEEPALIVE 4
+#define BGP_ROUTE_REFRESH 5
static struct tok bgp_msg_values[] = {
{ BGP_OPEN, "Open"},
{ BGP_UPDATE, "Update"},
{ BGP_NOTIFICATION, "Notification"},
{ BGP_KEEPALIVE, "Keepalive"},
+ { BGP_ROUTE_REFRESH, "Route Refresh"},
{ 0, NULL}
};
{ 0, NULL},
};
+static struct tok bgp_extd_comm_subtype_values[] = {
+ { 2, "target"},
+ { 3, "origin"},
+ { 4, "link-BW"},
+ { 0, NULL},
+};
+
static int
decode_prefix4(const u_char *pd, char *buf, u_int buflen)
{
#endif
static void
-bgp_attr_print(const struct bgp_attr *attr, const u_char *dat, int len)
+bgp_attr_print(const struct bgp_attr *attr, const u_char *pptr, int len)
{
int i;
u_int16_t af;
u_int8_t safi, snpa;
int advance;
int tlen;
- const u_char *p;
+ const u_char *tptr;
char buf[MAXHOSTNAMELEN + 100];
- p = dat;
+ tptr = pptr;
tlen=len;
switch (attr->bgpa_type) {
if (len != 1)
printf("invalid len");
else
- printf("%s", tok2str(bgp_origin_values, "Unknown Origin Typecode", p[0]));
+ printf("%s", tok2str(bgp_origin_values, "Unknown Origin Typecode", tptr[0]));
break;
case BGPTYPE_AS_PATH:
if (len % 2) {
printf("empty");
break;
}
- while (p < dat + len) {
+ while (tptr < pptr + len) {
/*
* under RFC1965, p[0] means:
* 1: AS_SET 2: AS_SEQUENCE
* 3: AS_CONFED_SET 4: AS_CONFED_SEQUENCE
*/
- if (p[0] == 3 || p[0] == 4)
+ if (tptr[0] == 3 || tptr[0] == 4)
printf("confed");
- printf("%s", (p[0] & 1) ? "{" : "");
- for (i = 0; i < p[1] * 2; i += 2) {
+ printf("%s", (tptr[0] & 1) ? "{" : "");
+ for (i = 0; i < tptr[1] * 2; i += 2) {
printf("%s%u", i == 0 ? "" : " ",
- EXTRACT_16BITS(&p[2 + i]));
+ EXTRACT_16BITS(&tptr[2 + i]));
}
- printf("%s", (p[0] & 1) ? "}" : "");
- p += 2 + p[1] * 2;
+ printf("%s", (tptr[0] & 1) ? "}" : "");
+ tptr += 2 + tptr[1] * 2;
}
break;
case BGPTYPE_NEXT_HOP:
if (len != 4)
printf("invalid len");
else
- printf("%s", getname(p));
+ printf("%s", getname(tptr));
break;
case BGPTYPE_MULTI_EXIT_DISC:
case BGPTYPE_LOCAL_PREF:
if (len != 4)
printf("invalid len");
else
- printf("%u", EXTRACT_32BITS(p));
+ printf("%u", EXTRACT_32BITS(tptr));
break;
case BGPTYPE_ATOMIC_AGGREGATE:
if (len != 0)
printf("invalid len");
break;
}
- printf(" AS #%u, origin %s", EXTRACT_16BITS(p),
- getname(p + 2));
+ printf(" AS #%u, origin %s", EXTRACT_16BITS(tptr),
+ getname(tptr + 2));
break;
case BGPTYPE_COMMUNITIES:
if (len % 4) {
}
while (tlen>0) {
u_int32_t comm;
- comm = EXTRACT_32BITS(p);
+ comm = EXTRACT_32BITS(tptr);
switch (comm) {
case BGP_COMMUNITY_NO_EXPORT:
printf(" NO_EXPORT");
break;
}
tlen -=4;
- p +=4;
+ tptr +=4;
}
break;
case BGPTYPE_ORIGINATOR_ID:
printf("invalid len");
break;
}
- printf("%s",getname(p));
+ printf("%s",getname(tptr));
break;
case BGPTYPE_CLUSTER_LIST:
while (tlen>0) {
printf("%s%s",
- getname(p),
+ getname(tptr),
(tlen>4) ? ", " : "");
tlen -=4;
- p +=4;
+ tptr +=4;
}
break;
case BGPTYPE_MP_REACH_NLRI:
- af = EXTRACT_16BITS(p);
- safi = p[2];
+ af = EXTRACT_16BITS(tptr);
+ safi = tptr[2];
- printf("\n\t AFI %s (%u), %sSAFI %s (%u)",
+ printf("\n\t AFI: %s (%u), %sSAFI: %s (%u)",
tok2str(bgp_afi_values, "Unknown AFI", af),
af,
(safi>128) ? "vendor specific " : "", /* 128 is meanwhile wellknown */
tok2str(bgp_safi_values, "Unknown SAFI", safi),
safi);
-
- p += 3;
if (af == AFNUM_INET)
;
else if (af == AFNUM_INET6)
;
#endif
- else
- break;
+ else {
+ printf("\n\t no AFI %u decoder",af);
+ if (!vflag)
+ print_unknown_data(tptr,"\n\t ",tlen);
+ break;
+ }
+
+ tptr +=3;
+
+ tlen = tptr[0];
+ tptr++;
- tlen = p[0];
if (tlen) {
printf("\n\t nexthop: ");
- i = 0;
- while (i < tlen) {
+ while (tlen > 0) {
switch (af) {
case AFNUM_INET:
switch(safi) {
case SAFNUM_MULTICAST:
case SAFNUM_UNIMULTICAST:
case SAFNUM_LABUNICAST:
- printf("%s", getname(p + 1 + i));
- i += sizeof(struct in_addr);
+ printf("%s", getname(tptr));
+ tlen -= sizeof(struct in_addr);
+ tptr += sizeof(struct in_addr);
break;
default:
printf("no SAFI %u decoder",safi);
- i = tlen;
+ if (!vflag)
+ print_unknown_data(tptr,"\n\t ",tlen);
break;
}
break;
case SAFNUM_MULTICAST:
case SAFNUM_UNIMULTICAST:
case SAFNUM_LABUNICAST:
- printf("%s", getname6(p + 1 + i));
- i += sizeof(struct in6_addr);
+ printf("%s", getname6(tptr));
+ tlen -= sizeof(struct in6_addr);
+ tptr += sizeof(struct in6_addr);
break;
default:
- printf("no SAFI %u decoder",safi);
- i = tlen;
+ printf("no SAFI %u decoder",safi);
+ if (!vflag)
+ print_unknown_data(tptr,"\n\t ",tlen);
break;
}
#endif
default:
- printf("no AF %u decoder",af);
- i = tlen; /*exit loop*/
+ printf("no AFI %u decoder",af);
+ if (!vflag)
+ print_unknown_data(tptr,"\n\t ",tlen);
break;
}
}
}
- p += 1 + tlen;
+ tptr += tlen;
+
+ snpa = tptr[0];
+ tptr++;
- snpa = p[0];
- p++;
if (snpa) {
printf("\n\t %u SNPA", snpa);
for (/*nothing*/; snpa > 0; snpa--) {
- printf("\n\t %d bytes", p[0]);
- p += p[0] + 1;
+ printf("\n\t %d bytes", tptr[0]);
+ tptr += tptr[0] + 1;
}
} else {
printf(", no SNPA");
}
- while (len - (p - dat) > 0) {
+ while (len - (tptr - pptr) > 0) {
switch (af) {
case AFNUM_INET:
switch (safi) {
case SAFNUM_UNICAST:
case SAFNUM_MULTICAST:
case SAFNUM_UNIMULTICAST:
- advance = decode_prefix4(p, buf, sizeof(buf));
+ advance = decode_prefix4(tptr, buf, sizeof(buf));
printf("\n\t %s", buf);
break;
case SAFNUM_LABUNICAST:
- advance = decode_labeled_prefix4(p, buf, sizeof(buf));
+ advance = decode_labeled_prefix4(tptr, buf, sizeof(buf));
printf("\n\t %s", buf);
break;
default:
printf("\n\t no SAFI %u decoder",safi);
+ if (!vflag)
+ print_unknown_data(tptr-3,"\n\t ",tlen);
advance = 0;
- p = dat + len;
+ tptr = pptr + len;
break;
}
break;
case SAFNUM_UNICAST:
case SAFNUM_MULTICAST:
case SAFNUM_UNIMULTICAST:
- advance = decode_prefix6(p, buf, sizeof(buf));
+ advance = decode_prefix6(tptr, buf, sizeof(buf));
printf("\n\t %s", buf);
break;
default:
printf("\n\t no SAFI %u decoder ",safi);
+ if (!vflag)
+ print_unknown_data(tptr-3,"\n\t ",tlen);
advance = 0;
- p = dat + len;
+ tptr = ptr + len;
break;
}
break;
#endif
default:
- printf("\n\t no AF %u decoder ",af);
+ printf("\n\t no AFI %u decoder ",af);
+ if (!vflag)
+ print_unknown_data(tptr-3,"\n\t ",tlen);
advance = 0;
- p = dat + len;
+ tptr = pptr + len;
break;
}
- p += advance;
+ tptr += advance;
}
break;
case BGPTYPE_MP_UNREACH_NLRI:
- af = EXTRACT_16BITS(p);
- safi = p[2];
+ af = EXTRACT_16BITS(tptr);
+ safi = tptr[2];
- printf("\n\t AFI %s (%u), %sSAFI %s (%u)",
+ printf("\n\t AFI: %s (%u), %sSAFI: %s (%u)",
tok2str(bgp_afi_values, "Unknown AFI", af),
af,
(safi>128) ? "vendor specific " : "", /* 128 is meanwhile wellknown */
tok2str(bgp_safi_values, "Unknown SAFI", safi),
safi);
- p += 3;
-
- printf("\n\t Withdrawn routes");
+ tptr += 3;
- while (len - (p - dat) > 0) {
+ while (len - (tptr - pptr) > 0) {
switch (af) {
case AFNUM_INET:
switch (safi) {
case SAFNUM_UNICAST:
case SAFNUM_MULTICAST:
case SAFNUM_UNIMULTICAST:
- advance = decode_prefix4(p, buf, sizeof(buf));
+ advance = decode_prefix4(tptr, buf, sizeof(buf));
printf("\n\t %s", buf);
break;
case SAFNUM_LABUNICAST:
- advance = decode_labeled_prefix4(p, buf, sizeof(buf));
+ advance = decode_labeled_prefix4(tptr, buf, sizeof(buf));
printf("\n\t %s", buf);
break;
default:
printf("\n\t no SAFI %u decoder",safi);
+ if (!vflag)
+ print_unknown_data(tptr-3,"\n\t ",tlen);
advance = 0;
- p = dat + len;
+ tptr = pptr + len;
break;
}
break;
case SAFNUM_UNICAST:
case SAFNUM_MULTICAST:
case SAFNUM_UNIMULTICAST:
- advance = decode_prefix6(p, buf, sizeof(buf));
+ advance = decode_prefix6(tptr, buf, sizeof(buf));
printf("\n\t %s", buf);
break;
default:
printf("\n\t no SAFI %u decoder",safi);
+ if (!vflag)
+ print_unknown_data(tptr-3,"\n\t ",tlen);
advance = 0;
- p = dat + len;
+ tptr = pptr + len;
break;
}
break;
#endif
default:
- printf("\n\t no AF %u decoder",af);
+ printf("\n\t no AFI %u decoder",af);
+ if (!vflag)
+ print_unknown_data(tptr-3,"\n\t ",tlen);
advance = 0;
- p = dat + len;
+ tptr = pptr + len;
break;
}
- p += advance;
+ tptr += advance;
}
break;
+ case BGPTYPE_EXTD_COMMUNITIES:
+ if (len % 8) {
+ printf("invalid len");
+ break;
+ }
+ while (tlen>0) {
+ u_int8_t extd_comm,extd_comm_type,extd_comm_subtype;
+ extd_comm=*tptr;
+ extd_comm_type=extd_comm&0x3f;
+ extd_comm_subtype=*(tptr+1);
+ switch(extd_comm_type) {
+ case 0:
+ printf("%s%s%s:%u:%s%s",
+ (extd_comm&0x80) ? "vendor-specific: " : "",
+ (extd_comm&0x40) ? "non-transitive:" : "",
+ tok2str(bgp_extd_comm_subtype_values,
+ "unknown",
+ extd_comm_subtype&0x3f),
+ EXTRACT_16BITS(tptr+2),
+ getname(tptr+4),
+ (tlen>8) ? ", " : "");
+ break;
+ case 1:
+ printf("%s%s%s:%s:%u%s",
+ (extd_comm&0x80) ? "vendor-specific: " : "",
+ (extd_comm&0x40) ? "non-transitive:" : "",
+ tok2str(bgp_extd_comm_subtype_values,
+ "unknown",
+ extd_comm_subtype&0x3f),
+ getname(tptr+2),
+ EXTRACT_16BITS(tptr+6),
+ (tlen>8) ? ", " : "");
+ break;
+ case 2:
+ printf("%s%s%s:%u:%u%s",
+ (extd_comm&0x80) ? "vendor-specific: " : "",
+ (extd_comm&0x40) ? "non-transitive:" : "",
+ tok2str(bgp_extd_comm_subtype_values,
+ "unknown",
+ extd_comm_subtype&0x3f),
+ EXTRACT_32BITS(tptr+2),
+ EXTRACT_16BITS(tptr+6),
+ (tlen>8) ? ", " : "");
+ break;
+
+ default:
+ printf("\n\t no typecode %u decoder",
+ extd_comm_type);
+ print_unknown_data(tptr,"\n\t ",8);
+ break;
+ }
+ tlen -=8;
+ tptr +=8;
+ }
+ break;
+
default:
- printf("no decoder");
- break;
+ printf("\n\t no Attribute %u decoder",attr->bgpa_type); /* we have no decoder for the attribute */
+ if (!vflag)
+ print_unknown_data(pptr,"\n\t ",len);
+ break;
}
+ if (vflag&&len) /* omit zero length attributes*/
+ print_unknown_data(pptr,"\n\t ",len);
}
static void
alen = bgp_attr_len(&bgpa);
aoff = bgp_attr_off(&bgpa);
- printf("\n\t %s ", tok2str(bgp_attr_values, "Unknown Attribute", bgpa.bgpa_type));
+ printf("\n\t %s (%u), length: %u",
+ tok2str(bgp_attr_values, "Unknown Attribute", bgpa.bgpa_type),
+ bgpa.bgpa_type,
+ alen);
+
if (bgpa.bgpa_flags) {
- printf("[%s%s%s%s",
+ printf(", flags [%s%s%s%s",
bgpa.bgpa_flags & 0x80 ? "O" : "",
bgpa.bgpa_flags & 0x40 ? "T" : "",
bgpa.bgpa_flags & 0x20 ? "P" : "",
printf("+%x", bgpa.bgpa_flags & 0xf);
printf("]: ");
}
-
bgp_attr_print(&bgpa, &p[i + aoff], alen);
i += aoff + alen;
}
TCHECK2(dat[0], BGP_SIZE);
memcpy(&bgp, dat, BGP_SIZE);
- printf("\n\t%s Message", tok2str(bgp_msg_values, "Unknown Type", bgp.bgp_type));
+ printf("\n\t%s Message (%u), length: %u ",
+ tok2str(bgp_msg_values, "Unknown", bgp.bgp_type),
+ bgp.bgp_type,
+ length);
switch (bgp.bgp_type) {
case BGP_OPEN:
case BGP_NOTIFICATION:
bgp_notification_print(dat, length);
break;
+ case BGP_KEEPALIVE:
+ break;
+ default:
+ /* we have no decoder for the BGP message */
+ printf("\n\t no Message %u decoder",bgp.bgp_type);
+ print_unknown_data(dat,"\n\t ",length);
+ break;
}
return;
trunc:
+
+
+
+
+
projects / tcpdump / blobdiff