#ifndef lint
static const char rcsid[] _U_ =
- "@(#) $Header: /tcpdump/master/tcpdump/print-bgp.c,v 1.77 2004-01-15 18:59:15 hannes Exp $";
+ "@(#) $Header: /tcpdump/master/tcpdump/print-bgp.c,v 1.91.2.9 2006-02-02 12:36:46 hannes Exp $";
#endif
#include <tcpdump-stdinc.h>
#include <string.h>
#include "interface.h"
+#include "decode_prefix.h"
#include "addrtoname.h"
#include "extract.h"
+#include "bgp.h"
+#include "l2vpn.h"
struct bgp {
u_int8_t bgp_marker[16];
};
#define BGP_OPT_SIZE 2 /* some compilers may pad to 4 bytes */
+#define BGP_UPDATE_MINSIZE 23
+
struct bgp_notification {
u_int8_t bgpn_marker[16];
u_int16_t bgpn_len;
#define BGPTYPE_EXTD_COMMUNITIES 16 /* draft-ietf-idr-bgp-ext-communities */
#define BGPTYPE_ATTR_SET 128 /* draft-marques-ppvpn-ibgp */
+#define BGP_MP_NLRI_MINSIZE 3 /* End of RIB Marker detection */
+
static struct tok bgp_attr_values[] = {
{ BGPTYPE_ORIGIN, "Origin"},
{ BGPTYPE_AS_PATH, "AS Path"},
#define BGP_CAPCODE_MP 1
#define BGP_CAPCODE_RR 2
+#define BGP_CAPCODE_ORF 3 /* XXX */
#define BGP_CAPCODE_RESTART 64 /* draft-ietf-idr-restart-05 */
+#define BGP_CAPCODE_AS_NEW 65 /* XXX */
+#define BGP_CAPCODE_DYN_CAP 67 /* XXX */
#define BGP_CAPCODE_RR_CISCO 128
static struct tok bgp_capcode_values[] = {
{ BGP_CAPCODE_MP, "Multiprotocol Extensions"},
{ BGP_CAPCODE_RR, "Route Refresh"},
+ { BGP_CAPCODE_ORF, "Cooperative Route Filtering"},
{ BGP_CAPCODE_RESTART, "Graceful Restart"},
+ { BGP_CAPCODE_AS_NEW, "32-Bit AS Number"},
+ { BGP_CAPCODE_DYN_CAP, "Dynamic Capability"},
{ BGP_CAPCODE_RR_CISCO, "Route Refresh (Cisco)"},
{ 0, NULL}
};
#define SAFNUM_UNIMULTICAST 3
/* labeled BGP RFC3107 */
#define SAFNUM_LABUNICAST 4
+#define SAFNUM_TUNNEL 64 /* XXX */
+#define SAFNUM_VPLS 65 /* XXX */
+#define SAFNUM_MDT 66 /* XXX */
/* Section 4.3.4 of draft-rosen-rfc2547bis-03.txt */
#define SAFNUM_VPNUNICAST 128
#define SAFNUM_VPNMULTICAST 129
{ SAFNUM_MULTICAST, "Multicast"},
{ SAFNUM_UNIMULTICAST, "Unicast+Multicast"},
{ SAFNUM_LABUNICAST, "labeled Unicast"},
+ { SAFNUM_TUNNEL, "Tunnel"},
+ { SAFNUM_VPLS, "VPLS"},
+ { SAFNUM_MDT, "MDT"},
{ SAFNUM_VPNUNICAST, "labeled VPN Unicast"},
{ SAFNUM_VPNMULTICAST, "labeled VPN Multicast"},
{ SAFNUM_VPNUNIMULTICAST, "labeled VPN Unicast+Multicast"},
#define AFNUM_DECNET 13
#define AFNUM_BANYAN 14
#define AFNUM_E164NSAP 15
+#define AFNUM_VPLS 25
/* draft-kompella-ppvpn-l2vpn */
#define AFNUM_L2VPN 196 /* still to be approved by IANA */
{ AFNUM_BANYAN, "Banyan Vines"},
{ AFNUM_E164NSAP, "E.164 with NSAP subaddress"},
{ AFNUM_L2VPN, "Layer-2 VPN"},
+ { AFNUM_VPLS, "VPLS"},
{ 0, NULL},
};
#define BGP_EXT_COM_RO_2 0x0203 /* Route Origin,Format AN(4bytes):local(2bytes) */
#define BGP_EXT_COM_LINKBAND 0x4004 /* Link Bandwidth,Format AS(2B):Bandwidth(4B) */
/* rfc2547 bgp-mpls-vpns */
+#define BGP_EXT_COM_CISCO_MCAST 0x0009 /* cisco proprietary */
#define BGP_EXT_COM_VPN_ORIGIN 0x0005 /* OSPF Domain ID / VPN of Origin - draft-rosen-vpns-ospf-bgp-mpls */
#define BGP_EXT_COM_VPN_ORIGIN2 0x0105 /* duplicate - keep for backwards compatability */
#define BGP_EXT_COM_L2INFO 0x800a /* draft-kompella-ppvpn-l2vpn */
+/* http://www.cisco.com/en/US/tech/tk436/tk428/technologies_tech_note09186a00801eb09a.shtml */
+#define BGP_EXT_COM_EIGRP_GEN 0x8800
+#define BGP_EXT_COM_EIGRP_METRIC_AS_DELAY 0x8801
+#define BGP_EXT_COM_EIGRP_METRIC_REL_NH_BW 0x8802
+#define BGP_EXT_COM_EIGRP_METRIC_LOAD_MTU 0x8803
+#define BGP_EXT_COM_EIGRP_EXT_REMAS_REMID 0x8804
+#define BGP_EXT_COM_EIGRP_EXT_REMPROTO_REMMETRIC 0x8805
+
static struct tok bgp_extd_comm_flag_values[] = {
{ 0x8000, "vendor-specific"},
{ 0x4000, "non-transitive"},
{ BGP_EXT_COM_RO_1, "origin"},
{ BGP_EXT_COM_RO_2, "origin"},
{ BGP_EXT_COM_LINKBAND, "link-BW"},
+ { BGP_EXT_COM_CISCO_MCAST, "mdt-group"},
{ BGP_EXT_COM_VPN_ORIGIN, "ospf-domain"},
{ BGP_EXT_COM_VPN_ORIGIN2, "ospf-domain"},
{ BGP_EXT_COM_VPN_ORIGIN3, "ospf-domain"},
{ BGP_EXT_COM_OSPF_RID, "ospf-router-id"},
{ BGP_EXT_COM_OSPF_RID2, "ospf-router-id"},
{ BGP_EXT_COM_L2INFO, "layer2-info"},
+ { BGP_EXT_COM_EIGRP_GEN , "eigrp-general-route (flag, tag)" },
+ { BGP_EXT_COM_EIGRP_METRIC_AS_DELAY , "eigrp-route-metric (AS, delay)" },
+ { BGP_EXT_COM_EIGRP_METRIC_REL_NH_BW , "eigrp-route-metric (reliability, nexthop, bandwidth)" },
+ { BGP_EXT_COM_EIGRP_METRIC_LOAD_MTU , "eigrp-route-metric (load, MTU)" },
+ { BGP_EXT_COM_EIGRP_EXT_REMAS_REMID , "eigrp-external-route (remote-AS, remote-ID)" },
+ { BGP_EXT_COM_EIGRP_EXT_REMPROTO_REMMETRIC , "eigrp-external-route (remote-proto, remote-metric)" },
{ 0, NULL},
};
{ 0, NULL },
};
-static struct tok bgp_l2vpn_encaps_values[] = {
- { 0, "Reserved"},
- { 1, "Frame Relay"},
- { 2, "ATM AAL5 VCC transport"},
- { 3, "ATM transparent cell transport"},
- { 4, "Ethernet VLAN"},
- { 5, "Ethernet"},
- { 6, "Cisco-HDLC"},
- { 7, "PPP"},
- { 8, "CEM"},
- { 9, "ATM VCC cell transport"},
- { 10, "ATM VPC cell transport"},
- { 11, "MPLS"},
- { 12, "VPLS"},
- { 64, "IP-interworking"},
- { 0, NULL},
-};
-
-static int
+int
decode_prefix4(const u_char *pptr, char *buf, u_int buflen)
{
struct in_addr addr;
u_int plen;
+ TCHECK(pptr[0]);
plen = pptr[0];
if (32 < plen)
return -1;
memset(&addr, 0, sizeof(addr));
+ TCHECK2(pptr[1], (plen + 7) / 8);
memcpy(&addr, &pptr[1], (plen + 7) / 8);
if (plen % 8) {
((u_char *)&addr)[(plen + 7) / 8 - 1] &=
}
snprintf(buf, buflen, "%s/%d", getname((u_char *)&addr), plen);
return 1 + (plen + 7) / 8;
+
+trunc:
+ return -2;
}
static int
struct in_addr addr;
u_int plen;
+ TCHECK(pptr[0]);
plen = pptr[0]; /* get prefix length */
/* this is one of the weirdnesses of rfc3107
stacked labels in a a single BGP message
*/
+ if (24 > plen)
+ return -1;
+
plen-=24; /* adjust prefixlen - labellength */
if (32 < plen)
return -1;
memset(&addr, 0, sizeof(addr));
+ TCHECK2(pptr[4], (plen + 7) / 8);
memcpy(&addr, &pptr[4], (plen + 7) / 8);
if (plen % 8) {
((u_char *)&addr)[(plen + 7) / 8 - 1] &=
((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
return 4 + (plen + 7) / 8;
+
+trunc:
+ return -2;
}
/* RDs and RTs share the same semantics
* we use bgp_vpn_rd_print for
* printing route targets inside a NLRI */
-static char *
+char *
bgp_vpn_rd_print (const u_char *pptr) {
- /* allocate space for the following string
- * xxx.xxx.xxx.xxx:xxxxx
- * 21 bytes plus one termination byte */
- static char rd[22];
+ /* allocate space for the largest possible string */
+ static char rd[sizeof("xxxxxxxxxx:xxxxx (xxx.xxx.xxx.xxx:xxxxx)")];
char *pos = rd;
/* ok lets load the RD format */
/* 4-byte-AS:number fmt*/
case 2:
- snprintf(pos, sizeof(rd) - (pos - rd), "%u:%u",
- EXTRACT_32BITS(pptr+2), EXTRACT_16BITS(pptr+6));
+ snprintf(pos, sizeof(rd) - (pos - rd), "%u:%u (%u.%u.%u.%u:%u)",
+ EXTRACT_32BITS(pptr+2), EXTRACT_16BITS(pptr+6),
+ *(pptr+2), *(pptr+3), *(pptr+4), *(pptr+5), EXTRACT_16BITS(pptr+6));
break;
default:
snprintf(pos, sizeof(rd) - (pos - rd), "unknown RD format");
u_int8_t route_target[8];
u_int plen;
+ TCHECK(pptr[0]);
plen = pptr[0]; /* get prefix length */
+ if (0 == plen)
+ return 1; /* default route target */
+
+ if (32 > plen)
+ return -1;
+
plen-=32; /* adjust prefix length */
- if (0 < plen)
+ if (64 < plen)
return -1;
memset(&route_target, 0, sizeof(route_target));
+ TCHECK2(pptr[1], (plen + 7) / 8);
memcpy(&route_target, &pptr[1], (plen + 7) / 8);
if (plen % 8) {
((u_char *)&route_target)[(plen + 7) / 8 - 1] &=
bgp_vpn_rd_print((u_char *)&route_target));
return 5 + (plen + 7) / 8;
+
+trunc:
+ return -2;
}
static int
struct in_addr addr;
u_int plen;
+ TCHECK(pptr[0]);
plen = pptr[0]; /* get prefix length */
+ if ((24+64) > plen)
+ return -1;
+
plen-=(24+64); /* adjust prefixlen - labellength - RD len*/
if (32 < plen)
return -1;
memset(&addr, 0, sizeof(addr));
+ TCHECK2(pptr[12], (plen + 7) / 8);
memcpy(&addr, &pptr[12], (plen + 7) / 8);
if (plen % 8) {
((u_char *)&addr)[(plen + 7) / 8 - 1] &=
((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
return 12 + (plen + 7) / 8;
+
+trunc:
+ return -2;
}
static int
decode_labeled_vpn_l2(const u_char *pptr, char *buf, u_int buflen)
{
int plen,tlen,strlen,tlv_type,tlv_len,ttlv_len;
+
+ TCHECK2(pptr[0], 2);
plen=EXTRACT_16BITS(pptr);
tlen=plen;
pptr+=2;
+ TCHECK2(pptr[0],15);
strlen=snprintf(buf, buflen, "RD: %s, CE-ID: %u, Label-Block Offset: %u, Label Base %u",
bgp_vpn_rd_print(pptr),
EXTRACT_16BITS(pptr+8),
/* ok now the variable part - lets read out TLVs*/
while (tlen>0) {
+ if (tlen < 3)
+ return -1;
+ TCHECK2(pptr[0], 3);
tlv_type=*pptr++;
tlv_len=EXTRACT_16BITS(pptr);
ttlv_len=tlv_len;
tlv_len);
ttlv_len=ttlv_len/8+1; /* how many bytes do we need to read ? */
while (ttlv_len>0) {
+ TCHECK(pptr[0]);
strlen+=snprintf(buf+strlen,buflen-strlen, "%02x",*pptr++);
ttlv_len--;
}
tlen-=(tlv_len<<3); /* the tlv-length is expressed in bits so lets shift it tright */
}
return plen+2;
+
+trunc:
+ return -2;
}
#ifdef INET6
-static int
+int
decode_prefix6(const u_char *pd, char *buf, u_int buflen)
{
struct in6_addr addr;
u_int plen;
+ TCHECK(pd[0]);
plen = pd[0];
if (128 < plen)
return -1;
memset(&addr, 0, sizeof(addr));
+ TCHECK2(pd[1], (plen + 7) / 8);
memcpy(&addr, &pd[1], (plen + 7) / 8);
if (plen % 8) {
addr.s6_addr[(plen + 7) / 8 - 1] &=
}
snprintf(buf, buflen, "%s/%d", getname6((u_char *)&addr), plen);
return 1 + (plen + 7) / 8;
+
+trunc:
+ return -2;
}
static int
struct in6_addr addr;
u_int plen;
+ TCHECK(pptr[0]);
plen = pptr[0]; /* get prefix length */
+
+ if (24 > plen)
+ return -1;
+
plen-=24; /* adjust prefixlen - labellength */
if (128 < plen)
return -1;
memset(&addr, 0, sizeof(addr));
+ TCHECK2(pptr[4], (plen + 7) / 8);
memcpy(&addr, &pptr[4], (plen + 7) / 8);
if (plen % 8) {
addr.s6_addr[(plen + 7) / 8 - 1] &=
((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
return 4 + (plen + 7) / 8;
+
+trunc:
+ return -2;
}
static int
struct in6_addr addr;
u_int plen;
+ TCHECK(pptr[0]);
plen = pptr[0]; /* get prefix length */
+ if ((24+64) > plen)
+ return -1;
+
plen-=(24+64); /* adjust prefixlen - labellength - RD len*/
if (128 < plen)
return -1;
memset(&addr, 0, sizeof(addr));
+ TCHECK2(pptr[12], (plen + 7) / 8);
memcpy(&addr, &pptr[12], (plen + 7) / 8);
if (plen % 8) {
addr.s6_addr[(plen + 7) / 8 - 1] &=
((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
return 12 + (plen + 7) / 8;
+
+trunc:
+ return -2;
}
#endif
-static void
+static int
+decode_clnp_prefix(const u_char *pptr, char *buf, u_int buflen)
+{
+ u_int8_t addr[19];
+ u_int plen;
+
+ TCHECK(pptr[0]);
+ plen = pptr[0]; /* get prefix length */
+
+ if (152 < plen)
+ return -1;
+
+ memset(&addr, 0, sizeof(addr));
+ TCHECK2(pptr[4], (plen + 7) / 8);
+ memcpy(&addr, &pptr[4], (plen + 7) / 8);
+ if (plen % 8) {
+ addr[(plen + 7) / 8 - 1] &=
+ ((0xff00 >> (plen % 8)) & 0xff);
+ }
+ snprintf(buf, buflen, "%s/%d",
+ isonsap_string(addr,(plen + 7) / 8),
+ plen);
+
+ return 1 + (plen + 7) / 8;
+
+trunc:
+ return -2;
+}
+
+static int
+decode_labeled_vpn_clnp_prefix(const u_char *pptr, char *buf, u_int buflen)
+{
+ u_int8_t addr[19];
+ u_int plen;
+
+ TCHECK(pptr[0]);
+ plen = pptr[0]; /* get prefix length */
+
+ if ((24+64) > plen)
+ return -1;
+
+ plen-=(24+64); /* adjust prefixlen - labellength - RD len*/
+
+ if (152 < plen)
+ return -1;
+
+ memset(&addr, 0, sizeof(addr));
+ TCHECK2(pptr[12], (plen + 7) / 8);
+ memcpy(&addr, &pptr[12], (plen + 7) / 8);
+ if (plen % 8) {
+ addr[(plen + 7) / 8 - 1] &=
+ ((0xff00 >> (plen % 8)) & 0xff);
+ }
+ /* the label may get offsetted by 4 bits so lets shift it right */
+ snprintf(buf, buflen, "RD: %s, %s/%d, label:%u %s",
+ bgp_vpn_rd_print(pptr+4),
+ isonsap_string(addr,(plen + 7) / 8),
+ plen,
+ EXTRACT_24BITS(pptr+1)>>4,
+ ((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
+
+ return 12 + (plen + 7) / 8;
+
+trunc:
+ return -2;
+}
+
+static int
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;
+ u_int8_t safi, snpa, nhlen;
union { /* copy buffer for bandwidth values */
float f;
u_int32_t i;
int tlen;
const u_char *tptr;
char buf[MAXHOSTNAMELEN + 100];
+ char tokbuf[TOKBUFSIZE];
tptr = pptr;
tlen=len;
case BGPTYPE_ORIGIN:
if (len != 1)
printf("invalid len");
- else
- printf("%s", tok2str(bgp_origin_values, "Unknown Origin Typecode", tptr[0]));
+ else {
+ TCHECK(*tptr);
+ printf("%s", tok2strbuf(bgp_origin_values,
+ "Unknown Origin Typecode",
+ tptr[0],
+ tokbuf, sizeof(tokbuf)));
+ }
break;
+
case BGPTYPE_AS_PATH:
if (len % 2) {
printf("invalid len");
}
while (tptr < pptr + len) {
- printf("%s", tok2str(bgp_as_path_segment_open_values, "?", tptr[0]));
+ TCHECK(tptr[0]);
+ printf("%s", tok2strbuf(bgp_as_path_segment_open_values,
+ "?", tptr[0],
+ tokbuf, sizeof(tokbuf)));
for (i = 0; i < tptr[1] * 2; i += 2) {
+ TCHECK2(tptr[2 + i], 2);
printf("%u ", EXTRACT_16BITS(&tptr[2 + i]));
}
- printf("%s", tok2str(bgp_as_path_segment_close_values, "?", tptr[0]));
+ TCHECK(tptr[0]);
+ printf("%s", tok2strbuf(bgp_as_path_segment_close_values,
+ "?", tptr[0],
+ tokbuf, sizeof(tokbuf)));
+ TCHECK(tptr[1]);
tptr += 2 + tptr[1] * 2;
}
break;
case BGPTYPE_NEXT_HOP:
if (len != 4)
printf("invalid len");
- else
+ else {
+ TCHECK2(tptr[0], 4);
printf("%s", getname(tptr));
+ }
break;
case BGPTYPE_MULTI_EXIT_DISC:
case BGPTYPE_LOCAL_PREF:
if (len != 4)
printf("invalid len");
- else
+ else {
+ TCHECK2(tptr[0], 4);
printf("%u", EXTRACT_32BITS(tptr));
+ }
break;
case BGPTYPE_ATOMIC_AGGREGATE:
if (len != 0)
printf("invalid len");
break;
}
+ TCHECK2(tptr[0], 6);
printf(" AS #%u, origin %s", EXTRACT_16BITS(tptr),
getname(tptr + 2));
break;
}
while (tlen>0) {
u_int32_t comm;
+ TCHECK2(tptr[0], 4);
comm = EXTRACT_32BITS(tptr);
switch (comm) {
case BGP_COMMUNITY_NO_EXPORT:
printf("invalid len");
break;
}
+ TCHECK2(tptr[0], 4);
printf("%s",getname(tptr));
break;
case BGPTYPE_CLUSTER_LIST:
+ if (len % 4) {
+ printf("invalid len");
+ break;
+ }
while (tlen>0) {
+ TCHECK2(tptr[0], 4);
printf("%s%s",
getname(tptr),
(tlen>4) ? ", " : "");
}
break;
case BGPTYPE_MP_REACH_NLRI:
+ TCHECK2(tptr[0], 3);
af = EXTRACT_16BITS(tptr);
safi = tptr[2];
printf("\n\t AFI: %s (%u), %sSAFI: %s (%u)",
- tok2str(bgp_afi_values, "Unknown AFI", af),
+ tok2strbuf(bgp_afi_values, "Unknown AFI", af,
+ tokbuf, sizeof(tokbuf)),
af,
(safi>128) ? "vendor specific " : "", /* 128 is meanwhile wellknown */
- tok2str(bgp_safi_values, "Unknown SAFI", safi),
+ tok2strbuf(bgp_safi_values, "Unknown SAFI", safi,
+ tokbuf, sizeof(tokbuf)),
safi);
- if (af == AFNUM_INET || af==AFNUM_L2VPN)
- ;
+ switch(af<<8 | safi) {
+ case (AFNUM_INET<<8 | SAFNUM_UNICAST):
+ case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
+ case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
+ case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
+ case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
+ case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
#ifdef INET6
- else if (af == AFNUM_INET6)
- ;
+ case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
+ case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
+ case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
+ case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
+ case (AFNUM_INET6<<8 | SAFNUM_RT_ROUTING_INFO):
+ case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
#endif
- else {
- printf("\n\t no AFI %u decoder",af);
+ case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
+ case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
+ case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
+ case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
+ case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
+ case (AFNUM_VPLS<<8 | SAFNUM_VPLS):
+ break;
+ default:
+ TCHECK2(tptr[0], tlen);
+ printf("\n\t no AFI %u / SAFI %u decoder",af,safi);
if (vflag <= 1)
print_unknown_data(tptr,"\n\t ",tlen);
+ goto done;
break;
}
tptr +=3;
- tlen = tptr[0];
+ TCHECK(tptr[0]);
+ nhlen = tptr[0];
+ tlen = nhlen;
tptr++;
if (tlen) {
- printf("\n\t nexthop: ");
- while (tlen > 0) {
- switch (af) {
- case AFNUM_INET:
- switch(safi) {
- case SAFNUM_UNICAST:
- case SAFNUM_MULTICAST:
- case SAFNUM_UNIMULTICAST:
- case SAFNUM_LABUNICAST:
- case SAFNUM_RT_ROUTING_INFO:
- printf("%s",getname(tptr));
- tlen -= sizeof(struct in_addr);
- tptr += sizeof(struct in_addr);
- break;
- case SAFNUM_VPNUNICAST:
- case SAFNUM_VPNMULTICAST:
- case SAFNUM_VPNUNIMULTICAST:
- printf("RD: %s, %s",
- bgp_vpn_rd_print(tptr),
- getname(tptr+BGP_VPN_RD_LEN));
- tlen -= (sizeof(struct in_addr)+BGP_VPN_RD_LEN);
- tptr += (sizeof(struct in_addr)+BGP_VPN_RD_LEN);
- break;
- default:
- printf("no SAFI %u decoder",safi);
- if (vflag <= 1)
- print_unknown_data(tptr,"\n\t ",tlen);
- break;
- }
- break;
+ printf("\n\t nexthop: ");
+ while (tlen > 0) {
+ switch(af<<8 | safi) {
+ case (AFNUM_INET<<8 | SAFNUM_UNICAST):
+ case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
+ case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
+ case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
+ case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
+ if (tlen < (int)sizeof(struct in_addr)) {
+ printf("invalid len");
+ tlen = 0;
+ } else {
+ TCHECK2(tptr[0], sizeof(struct in_addr));
+ printf("%s",getname(tptr));
+ tlen -= sizeof(struct in_addr);
+ tptr += sizeof(struct in_addr);
+ }
+ break;
+ case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
+ if (tlen < (int)(sizeof(struct in_addr)+BGP_VPN_RD_LEN)) {
+ printf("invalid len");
+ tlen = 0;
+ } else {
+ TCHECK2(tptr[0], sizeof(struct in_addr)+BGP_VPN_RD_LEN);
+ printf("RD: %s, %s",
+ bgp_vpn_rd_print(tptr),
+ getname(tptr+BGP_VPN_RD_LEN));
+ tlen -= (sizeof(struct in_addr)+BGP_VPN_RD_LEN);
+ tptr += (sizeof(struct in_addr)+BGP_VPN_RD_LEN);
+ }
+ break;
#ifdef INET6
- case AFNUM_INET6:
- switch(safi) {
- case SAFNUM_UNICAST:
- case SAFNUM_MULTICAST:
- case SAFNUM_UNIMULTICAST:
- case SAFNUM_LABUNICAST:
- case SAFNUM_RT_ROUTING_INFO:
- printf("%s", getname6(tptr));
- tlen -= sizeof(struct in6_addr);
- tptr += sizeof(struct in6_addr);
- break;
- case SAFNUM_VPNUNICAST:
- case SAFNUM_VPNMULTICAST:
- case SAFNUM_VPNUNIMULTICAST:
- printf("RD: %s, %s",
- bgp_vpn_rd_print(tptr),
- getname6(tptr+BGP_VPN_RD_LEN));
- tlen -= (sizeof(struct in6_addr)+BGP_VPN_RD_LEN);
- tptr += (sizeof(struct in6_addr)+BGP_VPN_RD_LEN);
- break;
- default:
- printf("no SAFI %u decoder",safi);
- if (vflag <= 1)
- print_unknown_data(tptr,"\n\t ",tlen);
- break;
- }
- break;
+ case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
+ case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
+ case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
+ case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
+ case (AFNUM_INET6<<8 | SAFNUM_RT_ROUTING_INFO):
+ if (tlen < (int)sizeof(struct in6_addr)) {
+ printf("invalid len");
+ tlen = 0;
+ } else {
+ TCHECK2(tptr[0], sizeof(struct in6_addr));
+ printf("%s", getname6(tptr));
+ tlen -= sizeof(struct in6_addr);
+ tptr += sizeof(struct in6_addr);
+ }
+ break;
+ case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
+ if (tlen < (int)(sizeof(struct in6_addr)+BGP_VPN_RD_LEN)) {
+ printf("invalid len");
+ tlen = 0;
+ } else {
+ TCHECK2(tptr[0], sizeof(struct in6_addr)+BGP_VPN_RD_LEN);
+ printf("RD: %s, %s",
+ bgp_vpn_rd_print(tptr),
+ getname6(tptr+BGP_VPN_RD_LEN));
+ tlen -= (sizeof(struct in6_addr)+BGP_VPN_RD_LEN);
+ tptr += (sizeof(struct in6_addr)+BGP_VPN_RD_LEN);
+ }
+ break;
#endif
- case AFNUM_L2VPN:
- switch(safi) {
- case SAFNUM_VPNUNICAST:
- case SAFNUM_VPNMULTICAST:
- case SAFNUM_VPNUNIMULTICAST:
- printf("%s", getname(tptr));
- tlen -= (sizeof(struct in_addr));
- tptr += (sizeof(struct in_addr));
- break;
- default:
- printf("no SAFI %u decoder",safi);
- if (vflag <= 1)
- print_unknown_data(tptr,"\n\t ",tlen);
- break;
- }
- break;
-
- default:
- printf("no AFI %u decoder",af);
- if (vflag <= 1)
- print_unknown_data(tptr,"\n\t ",tlen);
- break;
- }
- }
+ case (AFNUM_VPLS<<8 | SAFNUM_VPLS):
+ case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
+ if (tlen < (int)sizeof(struct in_addr)) {
+ printf("invalid len");
+ tlen = 0;
+ } else {
+ TCHECK2(tptr[0], sizeof(struct in_addr));
+ printf("%s", getname(tptr));
+ tlen -= (sizeof(struct in_addr));
+ tptr += (sizeof(struct in_addr));
+ }
+ break;
+ case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
+ case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
+ case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
+ TCHECK2(tptr[0], tlen);
+ printf("%s",isonsap_string(tptr,tlen));
+ tptr += tlen;
+ tlen = 0;
+ break;
+
+ case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
+ if (tlen < BGP_VPN_RD_LEN+1) {
+ printf("invalid len");
+ tlen = 0;
+ } else {
+ TCHECK2(tptr[0], tlen);
+ printf("RD: %s, %s",
+ bgp_vpn_rd_print(tptr),
+ isonsap_string(tptr+BGP_VPN_RD_LEN,tlen-BGP_VPN_RD_LEN));
+ /* rfc986 mapped IPv4 address ? */
+ if (EXTRACT_32BITS(tptr+BGP_VPN_RD_LEN) == 0x47000601)
+ printf(" = %s", getname(tptr+BGP_VPN_RD_LEN+4));
+#ifdef INET6
+ /* rfc1888 mapped IPv6 address ? */
+ else if (EXTRACT_24BITS(tptr+BGP_VPN_RD_LEN) == 0x350000)
+ printf(" = %s", getname6(tptr+BGP_VPN_RD_LEN+3));
+#endif
+ tptr += tlen;
+ tlen = 0;
+ }
+ break;
+ default:
+ TCHECK2(tptr[0], tlen);
+ printf("no AFI %u/SAFI %u decoder",af,safi);
+ if (vflag <= 1)
+ print_unknown_data(tptr,"\n\t ",tlen);
+ tptr += tlen;
+ tlen = 0;
+ goto done;
+ break;
+ }
+ }
}
+ printf(", nh-length: %u", nhlen);
tptr += tlen;
+ TCHECK(tptr[0]);
snpa = tptr[0];
tptr++;
if (snpa) {
printf("\n\t %u SNPA", snpa);
for (/*nothing*/; snpa > 0; snpa--) {
+ TCHECK(tptr[0]);
printf("\n\t %d bytes", tptr[0]);
tptr += tptr[0] + 1;
}
} else {
- printf(", no SNPA");
+ printf(", no SNPA");
}
while (len - (tptr - pptr) > 0) {
- switch (af) {
- case AFNUM_INET:
- switch (safi) {
- case SAFNUM_UNICAST:
- case SAFNUM_MULTICAST:
- case SAFNUM_UNIMULTICAST:
- advance = decode_prefix4(tptr, buf, sizeof(buf));
- if (advance >= 0)
- printf("\n\t %s", buf);
- else
- printf("\n\t (illegal prefix length)");
- break;
- case SAFNUM_LABUNICAST:
- advance = decode_labeled_prefix4(tptr, buf, sizeof(buf));
- printf("\n\t %s", buf);
- break;
- case SAFNUM_VPNUNICAST:
- case SAFNUM_VPNMULTICAST:
- case SAFNUM_VPNUNIMULTICAST:
- advance = decode_labeled_vpn_prefix4(tptr, buf, sizeof(buf));
- printf("\n\t %s", buf);
- break;
- case SAFNUM_RT_ROUTING_INFO:
- advance = decode_rt_routing_info(tptr, buf, sizeof(buf));
- printf("\n\t %s", buf);
- break;
- default:
- printf("\n\t no SAFI %u decoder",safi);
- if (vflag <= 1)
- print_unknown_data(tptr-3,"\n\t ",tlen);
- advance = 0;
- tptr = pptr + len;
- break;
- }
- break;
+ switch (af<<8 | safi) {
+ case (AFNUM_INET<<8 | SAFNUM_UNICAST):
+ case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
+ case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
+ advance = decode_prefix4(tptr, buf, sizeof(buf));
+ if (advance == -1)
+ printf("\n\t (illegal prefix length)");
+ else if (advance == -2)
+ goto trunc;
+ else
+ printf("\n\t %s", buf);
+ break;
+ case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
+ advance = decode_labeled_prefix4(tptr, buf, sizeof(buf));
+ if (advance == -1)
+ printf("\n\t (illegal prefix length)");
+ else if (advance == -2)
+ goto trunc;
+ else
+ printf("\n\t %s", buf);
+ break;
+ case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
+ advance = decode_labeled_vpn_prefix4(tptr, buf, sizeof(buf));
+ if (advance == -1)
+ printf("\n\t (illegal prefix length)");
+ else if (advance == -2)
+ goto trunc;
+ else
+ printf("\n\t %s", buf);
+ break;
+ case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
+ advance = decode_rt_routing_info(tptr, buf, sizeof(buf));
+ if (advance == -1)
+ printf("\n\t (illegal prefix length)");
+ else if (advance == -2)
+ goto trunc;
+ else
+ printf("\n\t %s", buf);
+ break;
#ifdef INET6
- case AFNUM_INET6:
- switch (safi) {
- case SAFNUM_UNICAST:
- case SAFNUM_MULTICAST:
- case SAFNUM_UNIMULTICAST:
- advance = decode_prefix6(tptr, buf, sizeof(buf));
- printf("\n\t %s", buf);
- break;
- case SAFNUM_LABUNICAST:
- advance = decode_labeled_prefix6(tptr, buf, sizeof(buf));
- printf("\n\t %s", buf);
- break;
- case SAFNUM_VPNUNICAST:
- case SAFNUM_VPNMULTICAST:
- case SAFNUM_VPNUNIMULTICAST:
- advance = decode_labeled_vpn_prefix6(tptr, buf, sizeof(buf));
- printf("\n\t %s", buf);
- break;
- case SAFNUM_RT_ROUTING_INFO:
- advance = decode_rt_routing_info(tptr, buf, sizeof(buf));
- printf("\n\t %s", buf);
- break;
- default:
- printf("\n\t no SAFI %u decoder ",safi);
- if (vflag <= 1)
- print_unknown_data(tptr-3,"\n\t ",tlen);
- advance = 0;
- tptr = pptr + len;
- break;
- }
- break;
+ case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
+ case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
+ case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
+ advance = decode_prefix6(tptr, buf, sizeof(buf));
+ if (advance == -1)
+ printf("\n\t (illegal prefix length)");
+ else if (advance == -2)
+ goto trunc;
+ else
+ printf("\n\t %s", buf);
+ break;
+ case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
+ advance = decode_labeled_prefix6(tptr, buf, sizeof(buf));
+ if (advance == -1)
+ printf("\n\t (illegal prefix length)");
+ else if (advance == -2)
+ goto trunc;
+ else
+ printf("\n\t %s", buf);
+ break;
+ case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
+ advance = decode_labeled_vpn_prefix6(tptr, buf, sizeof(buf));
+ if (advance == -1)
+ printf("\n\t (illegal prefix length)");
+ else if (advance == -2)
+ goto trunc;
+ else
+ printf("\n\t %s", buf);
+ break;
+ case (AFNUM_INET6<<8 | SAFNUM_RT_ROUTING_INFO):
+ advance = decode_rt_routing_info(tptr, buf, sizeof(buf));
+ if (advance == -1)
+ printf("\n\t (illegal prefix length)");
+ else if (advance == -2)
+ goto trunc;
+ else
+ printf("\n\t %s", buf);
+ break;
#endif
- case AFNUM_L2VPN:
- switch(safi) {
- case SAFNUM_VPNUNICAST:
- case SAFNUM_VPNMULTICAST:
- case SAFNUM_VPNUNIMULTICAST:
- advance = decode_labeled_vpn_l2(tptr, buf, sizeof(buf));
- printf("\n\t %s", buf);
- break;
- default:
- printf("no SAFI %u decoder",safi);
- if (vflag <= 1)
- print_unknown_data(tptr,"\n\t ",tlen);
- advance = 0;
- tptr = pptr + len;
- break;
- }
- break;
-
-
- default:
- printf("\n\t no AFI %u decoder ",af);
- if (vflag <= 1)
- print_unknown_data(tptr-3,"\n\t ",tlen);
- advance = 0;
- tptr = pptr + len;
- break;
- }
- tptr += advance;
+ case (AFNUM_VPLS<<8 | SAFNUM_VPLS):
+ case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
+ advance = decode_labeled_vpn_l2(tptr, buf, sizeof(buf));
+ if (advance == -1)
+ printf("\n\t (illegal length)");
+ else if (advance == -2)
+ goto trunc;
+ else
+ printf("\n\t %s", buf);
+ break;
+ case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
+ case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
+ case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
+ advance = decode_clnp_prefix(tptr, buf, sizeof(buf));
+ if (advance == -1)
+ printf("\n\t (illegal prefix length)");
+ else if (advance == -2)
+ goto trunc;
+ else
+ printf("\n\t %s", buf);
+ break;
+ case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
+ advance = decode_labeled_vpn_clnp_prefix(tptr, buf, sizeof(buf));
+ if (advance == -1)
+ printf("\n\t (illegal prefix length)");
+ else if (advance == -2)
+ goto trunc;
+ else
+ printf("\n\t %s", buf);
+ break;
+ default:
+ TCHECK2(*tptr,tlen);
+ printf("\n\t no AFI %u / SAFI %u decoder",af,safi);
+ if (vflag <= 1)
+ print_unknown_data(tptr,"\n\t ",tlen);
+ advance = 0;
+ tptr = pptr + len;
+ break;
+ }
+ if (advance < 0)
+ break;
+ tptr += advance;
}
+ done:
break;
case BGPTYPE_MP_UNREACH_NLRI:
+ TCHECK2(tptr[0], BGP_MP_NLRI_MINSIZE);
af = EXTRACT_16BITS(tptr);
safi = tptr[2];
printf("\n\t AFI: %s (%u), %sSAFI: %s (%u)",
- tok2str(bgp_afi_values, "Unknown AFI", af),
+ tok2strbuf(bgp_afi_values, "Unknown AFI", af,
+ tokbuf, sizeof(tokbuf)),
af,
(safi>128) ? "vendor specific " : "", /* 128 is meanwhile wellknown */
- tok2str(bgp_safi_values, "Unknown SAFI", safi),
+ tok2strbuf(bgp_safi_values, "Unknown SAFI", safi,
+ tokbuf, sizeof(tokbuf)),
safi);
+ if (len == BGP_MP_NLRI_MINSIZE)
+ printf("\n\t End-of-Rib Marker (empty NLRI)");
+
tptr += 3;
while (len - (tptr - pptr) > 0) {
- switch (af) {
- case AFNUM_INET:
- switch (safi) {
- case SAFNUM_UNICAST:
- case SAFNUM_MULTICAST:
- case SAFNUM_UNIMULTICAST:
- advance = decode_prefix4(tptr, buf, sizeof(buf));
- if (advance >= 0)
- printf("\n\t %s", buf);
- else
- printf("\n\t (illegal prefix length)");
- break;
- case SAFNUM_LABUNICAST:
- advance = decode_labeled_prefix4(tptr, buf, sizeof(buf));
- printf("\n\t %s", buf);
- break;
- case SAFNUM_VPNUNICAST:
- case SAFNUM_VPNMULTICAST:
- case SAFNUM_VPNUNIMULTICAST:
- advance = decode_labeled_vpn_prefix4(tptr, buf, sizeof(buf));
- printf("\n\t %s", buf);
- break;
- default:
- printf("\n\t no SAFI %u decoder",safi);
- if (vflag <= 1)
- print_unknown_data(tptr-3,"\n\t ",tlen);
- advance = 0;
- tptr = pptr + len;
- break;
- }
- break;
-
+ switch (af<<8 | safi) {
+ case (AFNUM_INET<<8 | SAFNUM_UNICAST):
+ case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
+ case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
+ advance = decode_prefix4(tptr, buf, sizeof(buf));
+ if (advance == -1)
+ printf("\n\t (illegal prefix length)");
+ else if (advance == -2)
+ goto trunc;
+ else
+ printf("\n\t %s", buf);
+ break;
+ case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
+ advance = decode_labeled_prefix4(tptr, buf, sizeof(buf));
+ if (advance == -1)
+ printf("\n\t (illegal prefix length)");
+ else if (advance == -2)
+ goto trunc;
+ else
+ printf("\n\t %s", buf);
+ break;
+ case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
+ advance = decode_labeled_vpn_prefix4(tptr, buf, sizeof(buf));
+ if (advance == -1)
+ printf("\n\t (illegal prefix length)");
+ else if (advance == -2)
+ goto trunc;
+ else
+ printf("\n\t %s", buf);
+ break;
#ifdef INET6
- case AFNUM_INET6:
- switch (safi) {
- case SAFNUM_UNICAST:
- case SAFNUM_MULTICAST:
- case SAFNUM_UNIMULTICAST:
- advance = decode_prefix6(tptr, buf, sizeof(buf));
- printf("\n\t %s", buf);
- break;
- case SAFNUM_LABUNICAST:
- advance = decode_labeled_prefix6(tptr, buf, sizeof(buf));
- printf("\n\t %s", buf);
- break;
- case SAFNUM_VPNUNICAST:
- case SAFNUM_VPNMULTICAST:
- case SAFNUM_VPNUNIMULTICAST:
- advance = decode_labeled_vpn_prefix6(tptr, buf, sizeof(buf));
- printf("\n\t %s", buf);
- break;
- default:
- printf("\n\t no SAFI %u decoder",safi);
- if (vflag <= 1)
- print_unknown_data(tptr-3,"\n\t ",tlen);
- advance = 0;
- tptr = pptr + len;
- break;
- }
- break;
+ case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
+ case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
+ case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
+ advance = decode_prefix6(tptr, buf, sizeof(buf));
+ if (advance == -1)
+ printf("\n\t (illegal prefix length)");
+ else if (advance == -2)
+ goto trunc;
+ else
+ printf("\n\t %s", buf);
+ break;
+ case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
+ advance = decode_labeled_prefix6(tptr, buf, sizeof(buf));
+ if (advance == -1)
+ printf("\n\t (illegal prefix length)");
+ else if (advance == -2)
+ goto trunc;
+ else
+ printf("\n\t %s", buf);
+ break;
+ case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
+ advance = decode_labeled_vpn_prefix6(tptr, buf, sizeof(buf));
+ if (advance == -1)
+ printf("\n\t (illegal prefix length)");
+ else if (advance == -2)
+ goto trunc;
+ else
+ printf("\n\t %s", buf);
+ break;
#endif
-
- case AFNUM_L2VPN:
- switch(safi) {
- case SAFNUM_VPNUNICAST:
- case SAFNUM_VPNMULTICAST:
- case SAFNUM_VPNUNIMULTICAST:
- advance = decode_labeled_vpn_l2(tptr, buf, sizeof(buf));
- printf("\n\t %s", buf);
- break;
- default:
- printf("no SAFI %u decoder",safi);
- if (vflag <= 1)
- print_unknown_data(tptr-3,"\n\t ",tlen);
- advance = 0;
- tptr = pptr + len;
- break;
- }
- break;
-
- default:
- printf("\n\t no AFI %u decoder",af);
- if (vflag <= 1)
- print_unknown_data(tptr-3,"\n\t ",tlen);
- advance = 0;
- tptr = pptr + len;
- break;
- }
-
- tptr += advance;
+ case (AFNUM_VPLS<<8 | SAFNUM_VPLS):
+ case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
+ advance = decode_labeled_vpn_l2(tptr, buf, sizeof(buf));
+ if (advance == -1)
+ printf("\n\t (illegal length)");
+ else if (advance == -2)
+ goto trunc;
+ else
+ printf("\n\t %s", buf);
+ break;
+ case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
+ case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
+ case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
+ advance = decode_clnp_prefix(tptr, buf, sizeof(buf));
+ if (advance == -1)
+ printf("\n\t (illegal prefix length)");
+ else if (advance == -2)
+ goto trunc;
+ else
+ printf("\n\t %s", buf);
+ break;
+ case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
+ case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
+ case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
+ advance = decode_labeled_vpn_clnp_prefix(tptr, buf, sizeof(buf));
+ if (advance == -1)
+ printf("\n\t (illegal prefix length)");
+ else if (advance == -2)
+ goto trunc;
+ else
+ printf("\n\t %s", buf);
+ break;
+ default:
+ TCHECK2(*(tptr-3),tlen);
+ printf("no AFI %u / SAFI %u decoder",af,safi);
+ if (vflag <= 1)
+ print_unknown_data(tptr-3,"\n\t ",tlen);
+ advance = 0;
+ tptr = pptr + len;
+ break;
+ }
+ if (advance < 0)
+ break;
+ tptr += advance;
}
break;
case BGPTYPE_EXTD_COMMUNITIES:
}
while (tlen>0) {
u_int16_t extd_comm;
+
+ TCHECK2(tptr[0], 2);
extd_comm=EXTRACT_16BITS(tptr);
printf("\n\t %s (0x%04x), Flags [%s]",
- tok2str(bgp_extd_comm_subtype_values, "unknown extd community typecode", extd_comm),
+ tok2strbuf(bgp_extd_comm_subtype_values,
+ "unknown extd community typecode",
+ extd_comm, tokbuf, sizeof(tokbuf)),
extd_comm,
bittok2str(bgp_extd_comm_flag_values, "none", extd_comm));
+ TCHECK2(*(tptr+2), 6);
switch(extd_comm) {
case BGP_EXT_COM_RT_0:
case BGP_EXT_COM_RO_0:
printf(": bandwidth: %.3f Mbps",
bw.f*8/1000000);
break;
+ case BGP_EXT_COM_CISCO_MCAST:
+ printf(": AS %u, group %s",
+ EXTRACT_16BITS(tptr+2),
+ getname(tptr+4));
+ break;
case BGP_EXT_COM_VPN_ORIGIN:
case BGP_EXT_COM_VPN_ORIGIN2:
case BGP_EXT_COM_VPN_ORIGIN3:
case BGP_EXT_COM_OSPF_RTYPE2:
printf(": area:%s, router-type:%s, metric-type:%s%s",
getname(tptr+2),
- tok2str(bgp_extd_comm_ospf_rtype_values,
- "unknown (0x%02x)",
- *(tptr+6)),
+ tok2strbuf(bgp_extd_comm_ospf_rtype_values,
+ "unknown (0x%02x)",
+ *(tptr+6),
+ tokbuf, sizeof(tokbuf)),
(*(tptr+7) & BGP_OSPF_RTYPE_METRIC_TYPE) ? "E2" : "",
(*(tptr+6) == (BGP_OSPF_RTYPE_EXT ||BGP_OSPF_RTYPE_NSSA )) ? "E1" : "");
break;
case BGP_EXT_COM_L2INFO:
printf(": %s Control Flags [0x%02x]:MTU %u",
- tok2str(bgp_l2vpn_encaps_values,
- "unknown encaps",
- *(tptr+2)),
+ tok2strbuf(l2vpn_encaps_values,
+ "unknown encaps",
+ *(tptr+2),
+ tokbuf, sizeof(tokbuf)),
*(tptr+3),
EXTRACT_16BITS(tptr+4));
break;
default:
+ TCHECK2(*tptr,8);
print_unknown_data(tptr,"\n\t ",8);
break;
}
break;
case BGPTYPE_ATTR_SET:
+ TCHECK2(tptr[0], 4);
printf("\n\t Origin AS: %u", EXTRACT_32BITS(tptr));
tptr+=4;
len -=4;
int alen;
struct bgp_attr bgpa;
+ TCHECK2(tptr[0], sizeof(bgpa));
memcpy(&bgpa, tptr, sizeof(bgpa));
alen = bgp_attr_len(&bgpa);
tptr += bgp_attr_off(&bgpa);
len -= bgp_attr_off(&bgpa);
printf("\n\t %s (%u), length: %u",
- tok2str(bgp_attr_values, "Unknown Attribute", bgpa.bgpa_type),
+ tok2strbuf(bgp_attr_values,
+ "Unknown Attribute", bgpa.bgpa_type,
+ tokbuf, sizeof(tokbuf)),
bgpa.bgpa_type,
alen);
printf("+%x", bgpa.bgpa_flags & 0xf);
printf("]: ");
}
- bgp_attr_print(&bgpa, tptr, alen); /* FIXME check for recursion */
+ /* FIXME check for recursion */
+ if (!bgp_attr_print(&bgpa, tptr, alen))
+ return 0;
tptr += alen;
len -= alen;
}
default:
+ TCHECK2(*pptr,len);
printf("\n\t no Attribute %u decoder",attr->bgpa_type); /* we have no decoder for the attribute */
if (vflag <= 1)
print_unknown_data(pptr,"\n\t ",len);
break;
}
- if (vflag > 1 && len) /* omit zero length attributes*/
+ if (vflag > 1 && len) { /* omit zero length attributes*/
+ TCHECK2(*pptr,len);
print_unknown_data(pptr,"\n\t ",len);
+ }
+ return 1;
+
+trunc:
+ return 0;
}
static void
{
struct bgp_open bgpo;
struct bgp_opt bgpopt;
- int hlen;
const u_char *opt;
int i,cap_type,cap_len,tcap_len,cap_offset;
+ char tokbuf[TOKBUFSIZE];
+ char tokbuf2[TOKBUFSIZE];
TCHECK2(dat[0], BGP_OPEN_SIZE);
memcpy(&bgpo, dat, BGP_OPEN_SIZE);
- hlen = ntohs(bgpo.bgpo_len);
printf("\n\t Version %d, ", bgpo.bgpo_version);
printf("my AS %u, ", ntohs(bgpo.bgpo_myas));
}
printf("\n\t Option %s (%u), length: %u",
- tok2str(bgp_opt_values,"Unknown", bgpopt.bgpopt_type),
+ tok2strbuf(bgp_opt_values,"Unknown",
+ bgpopt.bgpopt_type,
+ tokbuf, sizeof(tokbuf)),
bgpopt.bgpopt_type,
bgpopt.bgpopt_len);
cap_type=opt[i+BGP_OPT_SIZE];
cap_len=opt[i+BGP_OPT_SIZE+1];
tcap_len=cap_len;
- printf("\n\t %s, length: %u",
- tok2str(bgp_capcode_values,"Unknown", cap_type),
+ printf("\n\t %s (%u), length: %u",
+ tok2strbuf(bgp_capcode_values, "Unknown",
+ cap_type, tokbuf, sizeof(tokbuf)),
+ cap_type,
cap_len);
switch(cap_type) {
case BGP_CAPCODE_MP:
printf("\n\t\tAFI %s (%u), SAFI %s (%u)",
- tok2str(bgp_afi_values,"Unknown", EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+2)),
+ tok2strbuf(bgp_afi_values, "Unknown",
+ EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+2),
+ tokbuf, sizeof(tokbuf)),
EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+2),
- tok2str(bgp_safi_values,"Unknown", opt[i+BGP_OPT_SIZE+5]),
+ tok2strbuf(bgp_safi_values, "Unknown",
+ opt[i+BGP_OPT_SIZE+5],
+ tokbuf, sizeof(tokbuf)),
opt[i+BGP_OPT_SIZE+5]);
break;
case BGP_CAPCODE_RESTART:
cap_offset=4;
while(tcap_len>=4) {
printf("\n\t\t AFI %s (%u), SAFI %s (%u), Forwarding state preserved: %s",
- tok2str(bgp_afi_values,"Unknown", EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+cap_offset)),
+ tok2strbuf(bgp_afi_values,"Unknown",
+ EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+cap_offset),
+ tokbuf, sizeof(tokbuf)),
EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+cap_offset),
- tok2str(bgp_safi_values,"Unknown", opt[i+BGP_OPT_SIZE+cap_offset+2]),
+ tok2strbuf(bgp_safi_values,"Unknown",
+ opt[i+BGP_OPT_SIZE+cap_offset+2],
+ tokbuf2, sizeof(tokbuf2)),
opt[i+BGP_OPT_SIZE+cap_offset+2],
((opt[i+BGP_OPT_SIZE+cap_offset+3])&0x80) ? "yes" : "no" );
tcap_len-=4;
case BGP_CAPCODE_RR_CISCO:
break;
default:
+ TCHECK2(opt[i+BGP_OPT_SIZE+2],cap_len);
printf("\n\t\tno decoder for Capability %u",
cap_type);
if (vflag <= 1)
print_unknown_data(&opt[i+BGP_OPT_SIZE+2],"\n\t\t",cap_len);
break;
}
- if (vflag > 1)
+ if (vflag > 1) {
+ TCHECK2(opt[i+BGP_OPT_SIZE+2],cap_len);
print_unknown_data(&opt[i+BGP_OPT_SIZE+2],"\n\t\t",cap_len);
+ }
break;
case BGP_OPT_AUTH:
default:
{
struct bgp bgp;
struct bgp_attr bgpa;
- int hlen;
const u_char *p;
int len;
int i;
+ char tokbuf[TOKBUFSIZE];
TCHECK2(dat[0], BGP_SIZE);
memcpy(&bgp, dat, BGP_SIZE);
- hlen = ntohs(bgp.bgp_len);
p = dat + BGP_SIZE; /*XXX*/
/* Unfeasible routes */
while(i < 2 + len) {
wpfx = decode_prefix4(&p[i], buf, sizeof(buf));
- if (wpfx >= 0) {
- i += wpfx;
- printf("\n\t %s", buf);
- } else {
+ if (wpfx == -1) {
printf("\n\t (illegal prefix length)");
break;
+ } else if (wpfx == -2)
+ goto trunc;
+ else {
+ i += wpfx;
+ printf("\n\t %s", buf);
}
}
#endif
TCHECK2(p[0], 2);
len = EXTRACT_16BITS(p);
+
+ if (len == 0 && length == BGP_UPDATE_MINSIZE) {
+ printf("\n\t End-of-Rib Marker (empty NLRI)");
+ return;
+ }
+
if (len) {
/* do something more useful!*/
i = 2;
aoff = bgp_attr_off(&bgpa);
printf("\n\t %s (%u), length: %u",
- tok2str(bgp_attr_values, "Unknown Attribute", bgpa.bgpa_type),
+ tok2strbuf(bgp_attr_values, "Unknown Attribute",
+ bgpa.bgpa_type,
+ tokbuf, sizeof(tokbuf)),
bgpa.bgpa_type,
alen);
printf("+%x", bgpa.bgpa_flags & 0xf);
printf("]: ");
}
- bgp_attr_print(&bgpa, &p[i + aoff], alen);
+ if (!bgp_attr_print(&bgpa, &p[i + aoff], alen))
+ goto trunc;
i += aoff + alen;
}
- }
+ }
p += 2 + len;
if (dat + length > p) {
- printf("\n\t Updated routes:");
+ printf("\n\t Updated routes:");
while (dat + length > p) {
char buf[MAXHOSTNAMELEN + 100];
i = decode_prefix4(p, buf, sizeof(buf));
- if (i >= 0) {
- printf("\n\t %s", buf);
- p += i;
- } else {
+ if (i == -1) {
printf("\n\t (illegal prefix length)");
break;
+ } else if (i == -2)
+ goto trunc;
+ else {
+ printf("\n\t %s", buf);
+ p += i;
}
}
}
bgp_notification_print(const u_char *dat, int length)
{
struct bgp_notification bgpn;
- int hlen;
const u_char *tptr;
+ char tokbuf[TOKBUFSIZE];
+ char tokbuf2[TOKBUFSIZE];
TCHECK2(dat[0], BGP_NOTIFICATION_SIZE);
memcpy(&bgpn, dat, BGP_NOTIFICATION_SIZE);
- hlen = ntohs(bgpn.bgpn_len);
/* some little sanity checking */
if (length<BGP_NOTIFICATION_SIZE)
return;
printf(", %s (%u)",
- tok2str(bgp_notify_major_values, "Unknown Error", bgpn.bgpn_major),
+ tok2strbuf(bgp_notify_major_values, "Unknown Error",
+ bgpn.bgpn_major, tokbuf, sizeof(tokbuf)),
bgpn.bgpn_major);
switch (bgpn.bgpn_major) {
case BGP_NOTIFY_MAJOR_MSG:
printf(", subcode %s (%u)",
- tok2str(bgp_notify_minor_msg_values, "Unknown", bgpn.bgpn_minor),
+ tok2strbuf(bgp_notify_minor_msg_values, "Unknown",
+ bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
bgpn.bgpn_minor);
break;
case BGP_NOTIFY_MAJOR_OPEN:
printf(", subcode %s (%u)",
- tok2str(bgp_notify_minor_open_values, "Unknown", bgpn.bgpn_minor),
+ tok2strbuf(bgp_notify_minor_open_values, "Unknown",
+ bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
bgpn.bgpn_minor);
break;
case BGP_NOTIFY_MAJOR_UPDATE:
printf(", subcode %s (%u)",
- tok2str(bgp_notify_minor_update_values, "Unknown", bgpn.bgpn_minor),
+ tok2strbuf(bgp_notify_minor_update_values, "Unknown",
+ bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
bgpn.bgpn_minor);
break;
case BGP_NOTIFY_MAJOR_CAP:
printf(" subcode %s (%u)",
- tok2str(bgp_notify_minor_cap_values, "Unknown", bgpn.bgpn_minor),
+ tok2strbuf(bgp_notify_minor_cap_values, "Unknown",
+ bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
bgpn.bgpn_minor);
case BGP_NOTIFY_MAJOR_CEASE:
printf(", subcode %s (%u)",
- tok2str(bgp_notify_minor_cease_values, "Unknown", bgpn.bgpn_minor),
+ tok2strbuf(bgp_notify_minor_cease_values, "Unknown",
+ bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
bgpn.bgpn_minor);
/* draft-ietf-idr-cease-subcode-02 mentions optionally 7 bytes
tptr = dat + BGP_NOTIFICATION_SIZE;
TCHECK2(*tptr, 7);
printf(", AFI %s (%u), SAFI %s (%u), Max Prefixes: %u",
- tok2str(bgp_afi_values, "Unknown", EXTRACT_16BITS(tptr)),
+ tok2strbuf(bgp_afi_values, "Unknown",
+ EXTRACT_16BITS(tptr), tokbuf, sizeof(tokbuf)),
EXTRACT_16BITS(tptr),
- tok2str(bgp_safi_values, "Unknown", *(tptr+2)),
+ tok2strbuf(bgp_safi_values, "Unknown", *(tptr+2),
+ tokbuf2, sizeof(tokbuf)),
*(tptr+2),
EXTRACT_32BITS(tptr+3));
}
bgp_route_refresh_print(const u_char *pptr, int len) {
const struct bgp_route_refresh *bgp_route_refresh_header;
+ char tokbuf[TOKBUFSIZE];
+ char tokbuf2[TOKBUFSIZE];
+
+ TCHECK2(pptr[0], BGP_ROUTE_REFRESH_SIZE);
+
+ /* some little sanity checking */
+ if (len<BGP_ROUTE_REFRESH_SIZE)
+ return;
+
bgp_route_refresh_header = (const struct bgp_route_refresh *)pptr;
printf("\n\t AFI %s (%u), SAFI %s (%u)",
- tok2str(bgp_afi_values,"Unknown",
- EXTRACT_16BITS(&bgp_route_refresh_header->afi)), /* this stinks but the compiler pads the structure weird */
+ tok2strbuf(bgp_afi_values,"Unknown",
+ /* this stinks but the compiler pads the structure
+ * weird */
+ EXTRACT_16BITS(&bgp_route_refresh_header->afi),
+ tokbuf, sizeof(tokbuf)),
EXTRACT_16BITS(&bgp_route_refresh_header->afi),
- tok2str(bgp_safi_values,"Unknown",
- bgp_route_refresh_header->safi),
+ tok2strbuf(bgp_safi_values,"Unknown",
+ bgp_route_refresh_header->safi,
+ tokbuf2, sizeof(tokbuf2)),
bgp_route_refresh_header->safi);
- if (vflag > 1)
+ if (vflag > 1) {
+ TCHECK2(*pptr, len);
print_unknown_data(pptr,"\n\t ", len);
+ }
return;
+trunc:
+ printf("[|BGP]");
}
-static void
+static int
bgp_header_print(const u_char *dat, int length)
{
struct bgp bgp;
+ char tokbuf[TOKBUFSIZE];
TCHECK2(dat[0], BGP_SIZE);
memcpy(&bgp, dat, BGP_SIZE);
printf("\n\t%s Message (%u), length: %u",
- tok2str(bgp_msg_values, "Unknown", bgp.bgp_type),
+ tok2strbuf(bgp_msg_values, "Unknown", bgp.bgp_type,
+ tokbuf, sizeof(tokbuf)),
bgp.bgp_type,
length);
bgp_route_refresh_print(dat, length);
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);
+ /* we have no decoder for the BGP message */
+ TCHECK2(*dat, length);
+ printf("\n\t no Message %u decoder",bgp.bgp_type);
+ print_unknown_data(dat,"\n\t ",length);
break;
}
- return;
+ return 1;
trunc:
printf("[|BGP]");
+ return 0;
}
void
};
struct bgp bgp;
u_int16_t hlen;
+ char tokbuf[TOKBUFSIZE];
ep = dat + length;
if (snapend < dat + length)
p = dat;
start = p;
- while (p < snapend) {
+ while (p < ep) {
if (!TTEST2(p[0], 1))
break;
if (p[0] != 0xff) {
}
if (TTEST2(p[0], hlen)) {
- bgp_header_print(p, hlen);
+ if (!bgp_header_print(p, hlen))
+ return;
p += hlen;
start = p;
} else {
- printf("\n[|BGP %s]", tok2str(bgp_msg_values, "Unknown Message Type",bgp.bgp_type));
+ printf("\n[|BGP %s]",
+ tok2strbuf(bgp_msg_values,
+ "Unknown Message Type",
+ bgp.bgp_type,
+ tokbuf, sizeof(tokbuf)));
break;
}
}
projects / tcpdump / blobdiff