* complete BGP support.
*/
+#define NETDISSECT_REWORKED
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-#ifndef lint
-static const char rcsid[] _U_ =
- "@(#) $Header: /tcpdump/master/tcpdump/print-bgp.c,v 1.114 2007-07-14 22:24:54 guy Exp $";
-#endif
-
#include <tcpdump-stdinc.h>
#include <stdio.h>
#include <string.h>
#include "interface.h"
-#include "decode_prefix.h"
#include "addrtoname.h"
#include "extract.h"
-#include "bgp.h"
#include "af.h"
#include "l2vpn.h"
struct bgp {
- u_int8_t bgp_marker[16];
- u_int16_t bgp_len;
- u_int8_t bgp_type;
+ uint8_t bgp_marker[16];
+ uint16_t bgp_len;
+ uint8_t bgp_type;
};
#define BGP_SIZE 19 /* unaligned */
#define BGP_KEEPALIVE 4
#define BGP_ROUTE_REFRESH 5
-static struct tok bgp_msg_values[] = {
+static const struct tok bgp_msg_values[] = {
{ BGP_OPEN, "Open"},
{ BGP_UPDATE, "Update"},
{ BGP_NOTIFICATION, "Notification"},
};
struct bgp_open {
- u_int8_t bgpo_marker[16];
- u_int16_t bgpo_len;
- u_int8_t bgpo_type;
- u_int8_t bgpo_version;
- u_int16_t bgpo_myas;
- u_int16_t bgpo_holdtime;
- u_int32_t bgpo_id;
- u_int8_t bgpo_optlen;
+ uint8_t bgpo_marker[16];
+ uint16_t bgpo_len;
+ uint8_t bgpo_type;
+ uint8_t bgpo_version;
+ uint16_t bgpo_myas;
+ uint16_t bgpo_holdtime;
+ uint32_t bgpo_id;
+ uint8_t bgpo_optlen;
/* options should follow */
};
#define BGP_OPEN_SIZE 29 /* unaligned */
struct bgp_opt {
- u_int8_t bgpopt_type;
- u_int8_t bgpopt_len;
+ uint8_t bgpopt_type;
+ uint8_t bgpopt_len;
/* variable length */
};
#define BGP_OPT_SIZE 2 /* some compilers may pad to 4 bytes */
-
-#define BGP_UPDATE_MINSIZE 23
+#define BGP_CAP_HEADER_SIZE 2 /* some compilers may pad to 4 bytes */
struct bgp_notification {
- u_int8_t bgpn_marker[16];
- u_int16_t bgpn_len;
- u_int8_t bgpn_type;
- u_int8_t bgpn_major;
- u_int8_t bgpn_minor;
+ uint8_t bgpn_marker[16];
+ uint16_t bgpn_len;
+ uint8_t bgpn_type;
+ uint8_t bgpn_major;
+ uint8_t bgpn_minor;
};
#define BGP_NOTIFICATION_SIZE 21 /* unaligned */
struct bgp_route_refresh {
- u_int8_t bgp_marker[16];
- u_int16_t len;
- u_int8_t type;
- u_int8_t afi[2]; /* the compiler messes this structure up */
- u_int8_t res; /* when doing misaligned sequences of int8 and int16 */
- u_int8_t safi; /* afi should be int16 - so we have to access it using */
-}; /* EXTRACT_16BITS(&bgp_route_refresh->afi) (sigh) */
+ uint8_t bgp_marker[16];
+ uint16_t len;
+ uint8_t type;
+ uint8_t afi[2]; /* the compiler messes this structure up */
+ uint8_t res; /* when doing misaligned sequences of int8 and int16 */
+ uint8_t safi; /* afi should be int16 - so we have to access it using */
+}; /* EXTRACT_16BITS(&bgp_route_refresh->afi) (sigh) */
#define BGP_ROUTE_REFRESH_SIZE 23
-struct bgp_attr {
- u_int8_t bgpa_flags;
- u_int8_t bgpa_type;
- union {
- u_int8_t len;
- u_int16_t elen;
- } bgpa_len;
-#define bgp_attr_len(p) \
- (((p)->bgpa_flags & 0x10) ? \
- EXTRACT_16BITS(&(p)->bgpa_len.elen) : (p)->bgpa_len.len)
-#define bgp_attr_off(p) \
- (((p)->bgpa_flags & 0x10) ? 4 : 3)
-};
+#define bgp_attr_lenlen(flags, p) \
+ (((flags) & 0x10) ? 2 : 1)
+#define bgp_attr_len(flags, p) \
+ (((flags) & 0x10) ? EXTRACT_16BITS(p) : *(p))
#define BGPTYPE_ORIGIN 1
#define BGPTYPE_AS_PATH 2
#define BGPTYPE_MP_REACH_NLRI 14 /* RFC2283 */
#define BGPTYPE_MP_UNREACH_NLRI 15 /* RFC2283 */
#define BGPTYPE_EXTD_COMMUNITIES 16 /* draft-ietf-idr-bgp-ext-communities */
+#define BGPTYPE_AS4_PATH 17 /* RFC4893 */
+#define BGPTYPE_AGGREGATOR4 18 /* RFC4893 */
#define BGPTYPE_PMSI_TUNNEL 22 /* draft-ietf-l3vpn-2547bis-mcast-bgp-02.txt */
#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[] = {
+static const struct tok bgp_attr_values[] = {
{ BGPTYPE_ORIGIN, "Origin"},
{ BGPTYPE_AS_PATH, "AS Path"},
+ { BGPTYPE_AS4_PATH, "AS4 Path"},
{ BGPTYPE_NEXT_HOP, "Next Hop"},
{ BGPTYPE_MULTI_EXIT_DISC, "Multi Exit Discriminator"},
{ BGPTYPE_LOCAL_PREF, "Local Preference"},
{ BGPTYPE_ATOMIC_AGGREGATE, "Atomic Aggregate"},
{ BGPTYPE_AGGREGATOR, "Aggregator"},
+ { BGPTYPE_AGGREGATOR4, "Aggregator4"},
{ BGPTYPE_COMMUNITIES, "Community"},
{ BGPTYPE_ORIGINATOR_ID, "Originator ID"},
{ BGPTYPE_CLUSTER_LIST, "Cluster List"},
#define BGP_CONFED_AS_SEQUENCE 3 /* draft-ietf-idr-rfc3065bis-01 */
#define BGP_CONFED_AS_SET 4 /* draft-ietf-idr-rfc3065bis-01 */
-static struct tok bgp_as_path_segment_open_values[] = {
+#define BGP_AS_SEG_TYPE_MIN BGP_AS_SET
+#define BGP_AS_SEG_TYPE_MAX BGP_CONFED_AS_SET
+
+static const struct tok bgp_as_path_segment_open_values[] = {
{ BGP_AS_SEQUENCE, ""},
{ BGP_AS_SET, "{ "},
{ BGP_CONFED_AS_SEQUENCE, "( "},
{ 0, NULL}
};
-static struct tok bgp_as_path_segment_close_values[] = {
+static const struct tok bgp_as_path_segment_close_values[] = {
{ BGP_AS_SEQUENCE, ""},
{ BGP_AS_SET, "}"},
{ BGP_CONFED_AS_SEQUENCE, ")"},
#define BGP_OPT_CAP 2
-static struct tok bgp_opt_values[] = {
+static const struct tok bgp_opt_values[] = {
{ BGP_OPT_AUTH, "Authentication Information"},
{ BGP_OPT_CAP, "Capabilities Advertisement"},
{ 0, NULL}
#define BGP_CAPCODE_DYN_CAP 67 /* XXX */
#define BGP_CAPCODE_RR_CISCO 128
-static struct tok bgp_capcode_values[] = {
+static const struct tok bgp_capcode_values[] = {
{ BGP_CAPCODE_MP, "Multiprotocol Extensions"},
{ BGP_CAPCODE_RR, "Route Refresh"},
{ BGP_CAPCODE_ORF, "Cooperative Route Filtering"},
#define BGP_NOTIFY_MAJOR_CEASE 6
#define BGP_NOTIFY_MAJOR_CAP 7
-static struct tok bgp_notify_major_values[] = {
+static const struct tok bgp_notify_major_values[] = {
{ BGP_NOTIFY_MAJOR_MSG, "Message Header Error"},
{ BGP_NOTIFY_MAJOR_OPEN, "OPEN Message Error"},
{ BGP_NOTIFY_MAJOR_UPDATE, "UPDATE Message Error"},
/* draft-ietf-idr-cease-subcode-02 */
#define BGP_NOTIFY_MINOR_CEASE_MAXPRFX 1
-static struct tok bgp_notify_minor_cease_values[] = {
+static const struct tok bgp_notify_minor_cease_values[] = {
{ BGP_NOTIFY_MINOR_CEASE_MAXPRFX, "Maximum Number of Prefixes Reached"},
{ 2, "Administratively Shutdown"},
{ 3, "Peer Unconfigured"},
{ 0, NULL}
};
-static struct tok bgp_notify_minor_msg_values[] = {
+static const struct tok bgp_notify_minor_msg_values[] = {
{ 1, "Connection Not Synchronized"},
{ 2, "Bad Message Length"},
{ 3, "Bad Message Type"},
{ 0, NULL}
};
-static struct tok bgp_notify_minor_open_values[] = {
+static const struct tok bgp_notify_minor_open_values[] = {
{ 1, "Unsupported Version Number"},
{ 2, "Bad Peer AS"},
{ 3, "Bad BGP Identifier"},
{ 0, NULL}
};
-static struct tok bgp_notify_minor_update_values[] = {
+static const struct tok bgp_notify_minor_update_values[] = {
{ 1, "Malformed Attribute List"},
{ 2, "Unrecognized Well-known Attribute"},
{ 3, "Missing Well-known Attribute"},
{ 0, NULL}
};
-static struct tok bgp_notify_minor_cap_values[] = {
+static const struct tok bgp_notify_minor_cap_values[] = {
{ 1, "Invalid Action Value" },
{ 2, "Invalid Capability Length" },
{ 3, "Malformed Capability Value" },
{ 0, NULL }
};
-static struct tok bgp_origin_values[] = {
+static const struct tok bgp_origin_values[] = {
{ 0, "IGP"},
{ 1, "EGP"},
{ 2, "Incomplete"},
#define BGP_PMSI_TUNNEL_INGRESS 6
#define BGP_PMSI_TUNNEL_LDP_MP2MP 7
-static struct tok bgp_pmsi_tunnel_values[] = {
+static const struct tok bgp_pmsi_tunnel_values[] = {
{ BGP_PMSI_TUNNEL_RSVP_P2MP, "RSVP-TE P2MP LSP"},
{ BGP_PMSI_TUNNEL_LDP_P2MP, "LDP P2MP LSP"},
{ BGP_PMSI_TUNNEL_PIM_SSM, "PIM-SSM Tree"},
{ 0, NULL}
};
-static struct tok bgp_pmsi_flag_values[] = {
+static const struct tok bgp_pmsi_flag_values[] = {
{ 0x01, "Leaf Information required"},
{ 0, NULL}
};
#define SAFNUM_MULTICAST_VPN 5
#define SAFNUM_TUNNEL 64 /* XXX */
#define SAFNUM_VPLS 65 /* XXX */
-#define SAFNUM_MDT 66 /* XXX */
+/* draft-nalawade-idr-mdt-safi-03 */
+#define SAFNUM_MDT 66
/* Section 4.3.4 of draft-rosen-rfc2547bis-03.txt */
#define SAFNUM_VPNUNICAST 128
#define SAFNUM_VPNMULTICAST 129
#define BGP_VPN_RD_LEN 8
-static struct tok bgp_safi_values[] = {
+static const struct tok bgp_safi_values[] = {
{ SAFNUM_RES, "Reserved"},
{ SAFNUM_UNICAST, "Unicast"},
{ SAFNUM_MULTICAST, "Multicast"},
#define BGP_EXT_COM_OSPF_RTYPE2 0x8000 /* duplicate - keep for backwards compatability */
#define BGP_EXT_COM_OSPF_RID 0x0107 /* OSPF Router ID,Format RouterID(4B):Unused(2B) */
-#define BGP_EXT_COM_OSPF_RID2 0x8001 /* duplicate - keep for backwards compatability */
+#define BGP_EXT_COM_OSPF_RID2 0x8001 /* duplicate - keep for backwards compatability */
#define BGP_EXT_COM_L2INFO 0x800a /* draft-kompella-ppvpn-l2vpn */
-#define BGP_EXT_COM_SOURCE_AS 0x0009 /* draft-ietf-l3vpn-2547bis-mcast-bgp-02.txt */
-#define BGP_EXT_COM_VRF_RT_IMP 0x010a /* draft-ietf-l3vpn-2547bis-mcast-bgp-02.txt */
+#define BGP_EXT_COM_SOURCE_AS 0x0009 /* RFC-ietf-l3vpn-2547bis-mcast-bgp-08.txt */
+#define BGP_EXT_COM_VRF_RT_IMP 0x010b /* RFC-ietf-l3vpn-2547bis-mcast-bgp-08.txt */
+#define BGP_EXT_COM_L2VPN_RT_0 0x000a /* L2VPN Identifier,Format AS(2bytes):AN(4bytes) */
+#define BGP_EXT_COM_L2VPN_RT_1 0xF10a /* L2VPN Identifier,Format IP address:AN(2bytes) */
+
/* 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_EXT_REMAS_REMID 0x8804
#define BGP_EXT_COM_EIGRP_EXT_REMPROTO_REMMETRIC 0x8805
-static struct tok bgp_extd_comm_flag_values[] = {
+static const struct tok bgp_extd_comm_flag_values[] = {
{ 0x8000, "vendor-specific"},
{ 0x4000, "non-transitive"},
{ 0, NULL},
};
-static struct tok bgp_extd_comm_subtype_values[] = {
+static const struct tok bgp_extd_comm_subtype_values[] = {
{ BGP_EXT_COM_RT_0, "target"},
{ BGP_EXT_COM_RT_1, "target"},
{ BGP_EXT_COM_RT_2, "target"},
{ BGP_EXT_COM_OSPF_RTYPE2, "ospf-route-type"},
{ 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_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_EXT_REMPROTO_REMMETRIC , "eigrp-external-route (remote-proto, remote-metric)" },
{ BGP_EXT_COM_SOURCE_AS, "source-AS" },
{ BGP_EXT_COM_VRF_RT_IMP, "vrf-route-import"},
+ { BGP_EXT_COM_L2VPN_RT_0, "l2vpn-id"},
+ { BGP_EXT_COM_L2VPN_RT_1, "l2vpn-id"},
{ 0, NULL},
};
#define BGP_OSPF_RTYPE_SHAM 129 /* OSPF-MPLS-VPN Sham link */
#define BGP_OSPF_RTYPE_METRIC_TYPE 0x1 /* LSB of RTYPE Options Field */
-static struct tok bgp_extd_comm_ospf_rtype_values[] = {
- { BGP_OSPF_RTYPE_RTR, "Router" },
- { BGP_OSPF_RTYPE_NET, "Network" },
- { BGP_OSPF_RTYPE_SUM, "Summary" },
- { BGP_OSPF_RTYPE_EXT, "External" },
+static const struct tok bgp_extd_comm_ospf_rtype_values[] = {
+ { BGP_OSPF_RTYPE_RTR, "Router" },
+ { BGP_OSPF_RTYPE_NET, "Network" },
+ { BGP_OSPF_RTYPE_SUM, "Summary" },
+ { BGP_OSPF_RTYPE_EXT, "External" },
{ BGP_OSPF_RTYPE_NSSA,"NSSA External" },
- { BGP_OSPF_RTYPE_SHAM,"MPLS-VPN Sham" },
+ { BGP_OSPF_RTYPE_SHAM,"MPLS-VPN Sham" },
{ 0, NULL },
};
+#define TOKBUFSIZE 128
+static char astostr[20];
+
+/*
+ * as_printf
+ *
+ * Convert an AS number into a string and return string pointer.
+ *
+ * Depending on bflag is set or not, AS number is converted into ASDOT notation
+ * or plain number notation.
+ *
+ */
+static char *
+as_printf(netdissect_options *ndo,
+ char *str, int size, u_int asnum)
+{
+ if (!ndo->ndo_bflag || asnum <= 0xFFFF) {
+ snprintf(str, size, "%u", asnum);
+ } else {
+ snprintf(str, size, "%u.%u", asnum >> 16, asnum & 0xFFFF);
+ }
+ return str;
+}
+
+#define ITEMCHECK(minlen) if (itemlen < minlen) goto badtlv;
+
int
-decode_prefix4(const u_char *pptr, char *buf, u_int buflen)
+decode_prefix4(netdissect_options *ndo,
+ const u_char *pptr, u_int itemlen, char *buf, u_int buflen)
{
struct in_addr addr;
- u_int plen;
+ u_int plen, plenbytes;
- TCHECK(pptr[0]);
+ ND_TCHECK(pptr[0]);
+ ITEMCHECK(1);
plen = pptr[0];
if (32 < plen)
return -1;
+ itemlen -= 1;
memset(&addr, 0, sizeof(addr));
- TCHECK2(pptr[1], (plen + 7) / 8);
- memcpy(&addr, &pptr[1], (plen + 7) / 8);
+ plenbytes = (plen + 7) / 8;
+ ND_TCHECK2(pptr[1], plenbytes);
+ ITEMCHECK(plenbytes);
+ memcpy(&addr, &pptr[1], plenbytes);
if (plen % 8) {
- ((u_char *)&addr)[(plen + 7) / 8 - 1] &=
+ ((u_char *)&addr)[plenbytes - 1] &=
((0xff00 >> (plen % 8)) & 0xff);
}
- snprintf(buf, buflen, "%s/%d", getname((u_char *)&addr), plen);
- return 1 + (plen + 7) / 8;
+ snprintf(buf, buflen, "%s/%d", getname(ndo, (u_char *)&addr), plen);
+ return 1 + plenbytes;
trunc:
return -2;
+
+badtlv:
+ return -3;
}
static int
-decode_labeled_prefix4(const u_char *pptr, char *buf, u_int buflen)
+decode_labeled_prefix4(netdissect_options *ndo,
+ const u_char *pptr, u_int itemlen, char *buf, u_int buflen)
{
struct in_addr addr;
- u_int plen;
+ u_int plen, plenbytes;
- TCHECK(pptr[0]);
+ /* prefix length and label = 4 bytes */
+ ND_TCHECK2(pptr[0], 4);
+ ITEMCHECK(4);
plen = pptr[0]; /* get prefix length */
/* this is one of the weirdnesses of rfc3107
if (32 < plen)
return -1;
+ itemlen -= 4;
memset(&addr, 0, sizeof(addr));
- TCHECK2(pptr[4], (plen + 7) / 8);
- memcpy(&addr, &pptr[4], (plen + 7) / 8);
+ plenbytes = (plen + 7) / 8;
+ ND_TCHECK2(pptr[4], plenbytes);
+ ITEMCHECK(plenbytes);
+ memcpy(&addr, &pptr[4], plenbytes);
if (plen % 8) {
- ((u_char *)&addr)[(plen + 7) / 8 - 1] &=
+ ((u_char *)&addr)[plenbytes - 1] &=
((0xff00 >> (plen % 8)) & 0xff);
}
/* the label may get offsetted by 4 bits so lets shift it right */
snprintf(buf, buflen, "%s/%d, label:%u %s",
- getname((u_char *)&addr),
+ getname(ndo, (u_char *)&addr),
plen,
EXTRACT_24BITS(pptr+1)>>4,
((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
- return 4 + (plen + 7) / 8;
+ return 4 + plenbytes;
trunc:
return -2;
+
+badtlv:
+ return -3;
}
/*
* print an ipv4 or ipv6 address into a buffer dependend on address length.
*/
static char *
-bgp_vpn_ip_print (const u_char *pptr, u_int addr_length) {
+bgp_vpn_ip_print(netdissect_options *ndo,
+ const u_char *pptr, u_int addr_length) {
/* worst case string is s fully formatted v6 address */
static char addr[sizeof("1234:5678:89ab:cdef:1234:5678:89ab:cdef")];
switch(addr_length) {
case (sizeof(struct in_addr) << 3): /* 32 */
- TCHECK2(pptr[0], sizeof(struct in_addr));
- snprintf(pos, sizeof(addr), "%s", ipaddr_string(pptr));
+ ND_TCHECK2(pptr[0], sizeof(struct in_addr));
+ snprintf(pos, sizeof(addr), "%s", ipaddr_string(ndo, pptr));
break;
+#ifdef INET6
case (sizeof(struct in6_addr) << 3): /* 128 */
- TCHECK2(pptr[0], sizeof(struct in6_addr));
- snprintf(pos, sizeof(addr), "%s", ip6addr_string(pptr));
+ ND_TCHECK2(pptr[0], sizeof(struct in6_addr));
+ snprintf(pos, sizeof(addr), "%s", ip6addr_string(ndo, pptr));
break;
+#endif
default:
snprintf(pos, sizeof(addr), "bogus address length %u", addr_length);
break;
* return the number of bytes read from the wire.
*/
static int
-bgp_vpn_sg_print (const u_char *pptr, char *buf, u_int buflen) {
+bgp_vpn_sg_print(netdissect_options *ndo,
+ const u_char *pptr, char *buf, u_int buflen) {
- u_int8_t addr_length;
+ uint8_t addr_length;
u_int total_length, offset;
total_length = 0;
/* Source address length, encoded in bits */
- TCHECK2(pptr[0], 1);
+ ND_TCHECK2(pptr[0], 1);
addr_length = *pptr++;
/* Source address */
- TCHECK2(pptr[0], (addr_length >> 3));
+ ND_TCHECK2(pptr[0], (addr_length >> 3));
total_length += (addr_length >> 3) + 1;
offset = strlen(buf);
if (addr_length) {
snprintf(buf + offset, buflen - offset, ", Source %s",
- bgp_vpn_ip_print(pptr, addr_length));
+ bgp_vpn_ip_print(ndo, pptr, addr_length));
pptr += (addr_length >> 3);
}
-
+
/* Group address length, encoded in bits */
- TCHECK2(pptr[0], 1);
+ ND_TCHECK2(pptr[0], 1);
addr_length = *pptr++;
/* Group address */
- TCHECK2(pptr[0], (addr_length >> 3));
+ ND_TCHECK2(pptr[0], (addr_length >> 3));
total_length += (addr_length >> 3) + 1;
offset = strlen(buf);
if (addr_length) {
snprintf(buf + offset, buflen - offset, ", Group %s",
- bgp_vpn_ip_print(pptr, addr_length));
+ bgp_vpn_ip_print(ndo, pptr, addr_length));
pptr += (addr_length >> 3);
}
* we use bgp_vpn_rd_print for
* printing route targets inside a NLRI */
char *
-bgp_vpn_rd_print (const u_char *pptr) {
+bgp_vpn_rd_print(netdissect_options *ndo,
+ const u_char *pptr) {
/* allocate space for the largest possible string */
static char rd[sizeof("xxxxxxxxxx:xxxxx (xxx.xxx.xxx.xxx:xxxxx)")];
/* ok lets load the RD format */
switch (EXTRACT_16BITS(pptr)) {
- /* AS:IP-address fmt*/
+ /* 2-byte-AS:number fmt*/
case 0:
- snprintf(pos, sizeof(rd) - (pos - rd), "%u:%u.%u.%u.%u",
- EXTRACT_16BITS(pptr+2), *(pptr+4), *(pptr+5), *(pptr+6), *(pptr+7));
+ snprintf(pos, sizeof(rd) - (pos - rd), "%u:%u (= %u.%u.%u.%u)",
+ EXTRACT_16BITS(pptr+2),
+ EXTRACT_32BITS(pptr+4),
+ *(pptr+4), *(pptr+5), *(pptr+6), *(pptr+7));
break;
/* IP-address:AS fmt*/
/* 4-byte-AS:number fmt*/
case 2:
- 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));
+ snprintf(pos, sizeof(rd) - (pos - rd), "%s:%u (%u.%u.%u.%u:%u)",
+ as_printf(ndo, astostr, sizeof(astostr), 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");
}
static int
-decode_rt_routing_info(const u_char *pptr, char *buf, u_int buflen)
+decode_rt_routing_info(netdissect_options *ndo,
+ const u_char *pptr, char *buf, u_int buflen)
{
- u_int8_t route_target[8];
+ uint8_t route_target[8];
u_int plen;
- TCHECK(pptr[0]);
+ ND_TCHECK(pptr[0]);
plen = pptr[0]; /* get prefix length */
if (0 == plen)
return -1;
memset(&route_target, 0, sizeof(route_target));
- TCHECK2(pptr[1], (plen + 7) / 8);
+ ND_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] &=
((0xff00 >> (plen % 8)) & 0xff);
}
- snprintf(buf, buflen, "origin AS: %u, route target %s",
- EXTRACT_32BITS(pptr+1),
- bgp_vpn_rd_print((u_char *)&route_target));
+ snprintf(buf, buflen, "origin AS: %s, route target %s",
+ as_printf(ndo, astostr, sizeof(astostr), EXTRACT_32BITS(pptr+1)),
+ bgp_vpn_rd_print(ndo, (u_char *)&route_target));
return 5 + (plen + 7) / 8;
}
static int
-decode_labeled_vpn_prefix4(const u_char *pptr, char *buf, u_int buflen)
+decode_labeled_vpn_prefix4(netdissect_options *ndo,
+ const u_char *pptr, char *buf, u_int buflen)
{
struct in_addr addr;
u_int plen;
- TCHECK(pptr[0]);
+ ND_TCHECK(pptr[0]);
plen = pptr[0]; /* get prefix length */
if ((24+64) > plen)
return -1;
memset(&addr, 0, sizeof(addr));
- TCHECK2(pptr[12], (plen + 7) / 8);
+ ND_TCHECK2(pptr[12], (plen + 7) / 8);
memcpy(&addr, &pptr[12], (plen + 7) / 8);
if (plen % 8) {
((u_char *)&addr)[(plen + 7) / 8 - 1] &=
}
/* 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),
- getname((u_char *)&addr),
+ bgp_vpn_rd_print(ndo, pptr+4),
+ getname(ndo, (u_char *)&addr),
plen,
EXTRACT_24BITS(pptr+1)>>4,
((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
return -2;
}
+/*
+ * +-------------------------------+
+ * | |
+ * | RD:IPv4-address (12 octets) |
+ * | |
+ * +-------------------------------+
+ * | MDT Group-address (4 octets) |
+ * +-------------------------------+
+ */
+
+#define MDT_VPN_NLRI_LEN 16
+
+static int
+decode_mdt_vpn_nlri(netdissect_options *ndo,
+ const u_char *pptr, char *buf, u_int buflen)
+{
+
+ const u_char *rd;
+ const u_char *vpn_ip;
+
+ ND_TCHECK(pptr[0]);
+
+ /* if the NLRI is not predefined length, quit.*/
+ if (*pptr != MDT_VPN_NLRI_LEN * 8)
+ return -1;
+ pptr++;
+
+ /* RD */
+ ND_TCHECK2(pptr[0], 8);
+ rd = pptr;
+ pptr+=8;
+
+ /* IPv4 address */
+ ND_TCHECK2(pptr[0], sizeof(struct in_addr));
+ vpn_ip = pptr;
+ pptr+=sizeof(struct in_addr);
+
+ /* MDT Group Address */
+ ND_TCHECK2(pptr[0], sizeof(struct in_addr));
+
+ snprintf(buf, buflen, "RD: %s, VPN IP Address: %s, MC Group Address: %s",
+ bgp_vpn_rd_print(ndo, rd), ipaddr_string(ndo, vpn_ip), ipaddr_string(ndo, pptr));
+
+ return MDT_VPN_NLRI_LEN + 1;
+
+ trunc:
+
+return -2;
+}
+
#define BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_I_PMSI 1
#define BGP_MULTICAST_VPN_ROUTE_TYPE_INTER_AS_I_PMSI 2
#define BGP_MULTICAST_VPN_ROUTE_TYPE_S_PMSI 3
#define BGP_MULTICAST_VPN_ROUTE_TYPE_SHARED_TREE_JOIN 6
#define BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_TREE_JOIN 7
-static struct tok bgp_multicast_vpn_route_type_values[] = {
+static const struct tok bgp_multicast_vpn_route_type_values[] = {
{ BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_I_PMSI, "Intra-AS I-PMSI"},
{ BGP_MULTICAST_VPN_ROUTE_TYPE_INTER_AS_I_PMSI, "Inter-AS I-PMSI"},
{ BGP_MULTICAST_VPN_ROUTE_TYPE_S_PMSI, "S-PMSI"},
};
static int
-decode_multicast_vpn(const u_char *pptr, char *buf, u_int buflen)
+decode_multicast_vpn(netdissect_options *ndo,
+ const u_char *pptr, char *buf, u_int buflen)
{
- u_int8_t route_type, route_length, addr_length, sg_length;
+ uint8_t route_type, route_length, addr_length, sg_length;
u_int offset;
- TCHECK2(pptr[0], 2);
+ ND_TCHECK2(pptr[0], 2);
route_type = *pptr++;
route_length = *pptr++;
switch(route_type) {
case BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_I_PMSI:
- TCHECK2(pptr[0], BGP_VPN_RD_LEN);
+ ND_TCHECK2(pptr[0], BGP_VPN_RD_LEN);
offset = strlen(buf);
snprintf(buf + offset, buflen - offset, ", RD: %s, Originator %s",
- bgp_vpn_rd_print(pptr),
- bgp_vpn_ip_print(pptr + BGP_VPN_RD_LEN,
+ bgp_vpn_rd_print(ndo, pptr),
+ bgp_vpn_ip_print(ndo, pptr + BGP_VPN_RD_LEN,
(route_length - BGP_VPN_RD_LEN) << 3));
break;
case BGP_MULTICAST_VPN_ROUTE_TYPE_INTER_AS_I_PMSI:
- TCHECK2(pptr[0], BGP_VPN_RD_LEN + 4);
+ ND_TCHECK2(pptr[0], BGP_VPN_RD_LEN + 4);
offset = strlen(buf);
- snprintf(buf + offset, buflen - offset, ", RD: %s, Source-AS %u",
- bgp_vpn_rd_print(pptr),
- EXTRACT_32BITS(pptr + BGP_VPN_RD_LEN));
+ snprintf(buf + offset, buflen - offset, ", RD: %s, Source-AS %s",
+ bgp_vpn_rd_print(ndo, pptr),
+ as_printf(ndo, astostr, sizeof(astostr),
+ EXTRACT_32BITS(pptr + BGP_VPN_RD_LEN)));
break;
case BGP_MULTICAST_VPN_ROUTE_TYPE_S_PMSI:
- TCHECK2(pptr[0], BGP_VPN_RD_LEN);
+ ND_TCHECK2(pptr[0], BGP_VPN_RD_LEN);
offset = strlen(buf);
snprintf(buf + offset, buflen - offset, ", RD: %s",
- bgp_vpn_rd_print(pptr));
+ bgp_vpn_rd_print(ndo, pptr));
pptr += BGP_VPN_RD_LEN;
- sg_length = bgp_vpn_sg_print(pptr, buf, buflen);
+ sg_length = bgp_vpn_sg_print(ndo, pptr, buf, buflen);
addr_length = route_length - sg_length;
- TCHECK2(pptr[0], addr_length);
+ ND_TCHECK2(pptr[0], addr_length);
offset = strlen(buf);
snprintf(buf + offset, buflen - offset, ", Originator %s",
- bgp_vpn_ip_print(pptr, addr_length << 3));
+ bgp_vpn_ip_print(ndo, pptr, addr_length << 3));
break;
case BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_ACTIVE:
- TCHECK2(pptr[0], BGP_VPN_RD_LEN);
+ ND_TCHECK2(pptr[0], BGP_VPN_RD_LEN);
offset = strlen(buf);
snprintf(buf + offset, buflen - offset, ", RD: %s",
- bgp_vpn_rd_print(pptr));
+ bgp_vpn_rd_print(ndo, pptr));
pptr += BGP_VPN_RD_LEN;
- bgp_vpn_sg_print(pptr, buf, buflen);
+ bgp_vpn_sg_print(ndo, pptr, buf, buflen);
break;
case BGP_MULTICAST_VPN_ROUTE_TYPE_SHARED_TREE_JOIN: /* fall through */
case BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_TREE_JOIN:
- TCHECK2(pptr[0], BGP_VPN_RD_LEN);
+ ND_TCHECK2(pptr[0], BGP_VPN_RD_LEN);
offset = strlen(buf);
- snprintf(buf + offset, buflen - offset, ", RD: %s, Source-AS %u",
- bgp_vpn_rd_print(pptr),
- EXTRACT_32BITS(pptr + BGP_VPN_RD_LEN));
+ snprintf(buf + offset, buflen - offset, ", RD: %s, Source-AS %s",
+ bgp_vpn_rd_print(ndo, pptr),
+ as_printf(ndo, astostr, sizeof(astostr),
+ EXTRACT_32BITS(pptr + BGP_VPN_RD_LEN)));
pptr += BGP_VPN_RD_LEN;
- bgp_vpn_sg_print(pptr, buf, buflen);
+ bgp_vpn_sg_print(ndo, pptr, buf, buflen);
break;
/*
}
static int
-decode_labeled_vpn_l2(const u_char *pptr, char *buf, u_int buflen)
+decode_labeled_vpn_l2(netdissect_options *ndo,
+ const u_char *pptr, char *buf, u_int buflen)
{
int plen,tlen,strlen,tlv_type,tlv_len,ttlv_len;
- TCHECK2(pptr[0], 2);
+ ND_TCHECK2(pptr[0], 2);
plen=EXTRACT_16BITS(pptr);
tlen=plen;
pptr+=2;
- TCHECK2(pptr[0],15);
- buf[0]='\0';
- 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),
- EXTRACT_16BITS(pptr+10),
- EXTRACT_24BITS(pptr+12)>>4); /* the label is offsetted by 4 bits so lets shift it right */
- UPDATE_BUF_BUFLEN(buf, buflen, strlen);
- pptr+=15;
- tlen-=15;
-
- /* 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;
- pptr+=2;
-
- switch(tlv_type) {
- case 1:
- if (buflen!=0) {
- strlen=snprintf(buf,buflen, "\n\t\tcircuit status vector (%u) length: %u: 0x",
- tlv_type,
- tlv_len);
- UPDATE_BUF_BUFLEN(buf, buflen, strlen);
- }
- ttlv_len=ttlv_len/8+1; /* how many bytes do we need to read ? */
- while (ttlv_len>0) {
- TCHECK(pptr[0]);
- if (buflen!=0) {
- strlen=snprintf(buf,buflen, "%02x",*pptr++);
- UPDATE_BUF_BUFLEN(buf, buflen, strlen);
- }
- ttlv_len--;
- }
- break;
- default:
- if (buflen!=0) {
- strlen=snprintf(buf,buflen, "\n\t\tunknown TLV #%u, length: %u",
- tlv_type,
- tlv_len);
- UPDATE_BUF_BUFLEN(buf, buflen, strlen);
- }
- break;
- }
- tlen-=(tlv_len<<3); /* the tlv-length is expressed in bits so lets shift it right */
+ /* Old and new L2VPN NLRI share AFI/SAFI
+ * -> Assume a 12 Byte-length NLRI is auto-discovery-only
+ * and > 17 as old format. Complain for the middle case
+ */
+ if (plen==12) {
+ /* assume AD-only with RD, BGPNH */
+ ND_TCHECK2(pptr[0],12);
+ buf[0]='\0';
+ strlen=snprintf(buf, buflen, "RD: %s, BGPNH: %s",
+ bgp_vpn_rd_print(ndo, pptr),
+ /* need something like getname(ndo, ) here */
+ getname(ndo, pptr+8)
+ );
+ UPDATE_BUF_BUFLEN(buf, buflen, strlen);
+ pptr+=12;
+ tlen-=12;
+ return plen;
+ } else if (plen>17) {
+ /* assume old format */
+ /* RD, ID, LBLKOFF, LBLBASE */
+
+ ND_TCHECK2(pptr[0],15);
+ buf[0]='\0';
+ strlen=snprintf(buf, buflen, "RD: %s, CE-ID: %u, Label-Block Offset: %u, Label Base %u",
+ bgp_vpn_rd_print(ndo, pptr),
+ EXTRACT_16BITS(pptr+8),
+ EXTRACT_16BITS(pptr+10),
+ EXTRACT_24BITS(pptr+12)>>4); /* the label is offsetted by 4 bits so lets shift it right */
+ UPDATE_BUF_BUFLEN(buf, buflen, strlen);
+ pptr+=15;
+ tlen-=15;
+
+ /* ok now the variable part - lets read out TLVs*/
+ while (tlen>0) {
+ if (tlen < 3)
+ return -1;
+ ND_TCHECK2(pptr[0], 3);
+ tlv_type=*pptr++;
+ tlv_len=EXTRACT_16BITS(pptr);
+ ttlv_len=tlv_len;
+ pptr+=2;
+
+ switch(tlv_type) {
+ case 1:
+ if (buflen!=0) {
+ strlen=snprintf(buf,buflen, "\n\t\tcircuit status vector (%u) length: %u: 0x",
+ tlv_type,
+ tlv_len);
+ UPDATE_BUF_BUFLEN(buf, buflen, strlen);
+ }
+ ttlv_len=ttlv_len/8+1; /* how many bytes do we need to read ? */
+ while (ttlv_len>0) {
+ ND_TCHECK(pptr[0]);
+ if (buflen!=0) {
+ strlen=snprintf(buf,buflen, "%02x",*pptr++);
+ UPDATE_BUF_BUFLEN(buf, buflen, strlen);
+ }
+ ttlv_len--;
+ }
+ break;
+ default:
+ if (buflen!=0) {
+ strlen=snprintf(buf,buflen, "\n\t\tunknown TLV #%u, length: %u",
+ tlv_type,
+ tlv_len);
+ UPDATE_BUF_BUFLEN(buf, buflen, strlen);
+ }
+ break;
+ }
+ tlen-=(tlv_len<<3); /* the tlv-length is expressed in bits so lets shift it right */
+ }
+ return plen+2;
+
+ } else {
+ /* complain bitterly ? */
+ /* fall through */
+ goto trunc;
}
- return plen+2;
trunc:
return -2;
#ifdef INET6
int
-decode_prefix6(const u_char *pd, char *buf, u_int buflen)
+decode_prefix6(netdissect_options *ndo,
+ const u_char *pd, u_int itemlen, char *buf, u_int buflen)
{
struct in6_addr addr;
- u_int plen;
+ u_int plen, plenbytes;
- TCHECK(pd[0]);
+ ND_TCHECK(pd[0]);
+ ITEMCHECK(1);
plen = pd[0];
if (128 < plen)
return -1;
+ itemlen -= 1;
memset(&addr, 0, sizeof(addr));
- TCHECK2(pd[1], (plen + 7) / 8);
- memcpy(&addr, &pd[1], (plen + 7) / 8);
+ plenbytes = (plen + 7) / 8;
+ ND_TCHECK2(pd[1], plenbytes);
+ ITEMCHECK(plenbytes);
+ memcpy(&addr, &pd[1], plenbytes);
if (plen % 8) {
- addr.s6_addr[(plen + 7) / 8 - 1] &=
+ addr.s6_addr[plenbytes - 1] &=
((0xff00 >> (plen % 8)) & 0xff);
}
- snprintf(buf, buflen, "%s/%d", getname6((u_char *)&addr), plen);
- return 1 + (plen + 7) / 8;
+ snprintf(buf, buflen, "%s/%d", getname6(ndo, (u_char *)&addr), plen);
+ return 1 + plenbytes;
trunc:
return -2;
+
+badtlv:
+ return -3;
}
static int
-decode_labeled_prefix6(const u_char *pptr, char *buf, u_int buflen)
+decode_labeled_prefix6(netdissect_options *ndo,
+ const u_char *pptr, u_int itemlen, char *buf, u_int buflen)
{
struct in6_addr addr;
- u_int plen;
+ u_int plen, plenbytes;
- TCHECK(pptr[0]);
+ /* prefix length and label = 4 bytes */
+ ND_TCHECK2(pptr[0], 4);
+ ITEMCHECK(4);
plen = pptr[0]; /* get prefix length */
if (24 > plen)
if (128 < plen)
return -1;
+ itemlen -= 4;
memset(&addr, 0, sizeof(addr));
- TCHECK2(pptr[4], (plen + 7) / 8);
- memcpy(&addr, &pptr[4], (plen + 7) / 8);
+ plenbytes = (plen + 7) / 8;
+ ND_TCHECK2(pptr[4], plenbytes);
+ memcpy(&addr, &pptr[4], plenbytes);
if (plen % 8) {
- addr.s6_addr[(plen + 7) / 8 - 1] &=
+ addr.s6_addr[plenbytes - 1] &=
((0xff00 >> (plen % 8)) & 0xff);
}
/* the label may get offsetted by 4 bits so lets shift it right */
snprintf(buf, buflen, "%s/%d, label:%u %s",
- getname6((u_char *)&addr),
+ getname6(ndo, (u_char *)&addr),
plen,
EXTRACT_24BITS(pptr+1)>>4,
((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
- return 4 + (plen + 7) / 8;
+ return 4 + plenbytes;
trunc:
return -2;
+
+badtlv:
+ return -3;
}
static int
-decode_labeled_vpn_prefix6(const u_char *pptr, char *buf, u_int buflen)
+decode_labeled_vpn_prefix6(netdissect_options *ndo,
+ const u_char *pptr, char *buf, u_int buflen)
{
struct in6_addr addr;
u_int plen;
- TCHECK(pptr[0]);
+ ND_TCHECK(pptr[0]);
plen = pptr[0]; /* get prefix length */
if ((24+64) > plen)
return -1;
memset(&addr, 0, sizeof(addr));
- TCHECK2(pptr[12], (plen + 7) / 8);
+ ND_TCHECK2(pptr[12], (plen + 7) / 8);
memcpy(&addr, &pptr[12], (plen + 7) / 8);
if (plen % 8) {
addr.s6_addr[(plen + 7) / 8 - 1] &=
}
/* 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),
- getname6((u_char *)&addr),
+ bgp_vpn_rd_print(ndo, pptr+4),
+ getname6(ndo, (u_char *)&addr),
plen,
EXTRACT_24BITS(pptr+1)>>4,
((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
#endif
static int
-decode_clnp_prefix(const u_char *pptr, char *buf, u_int buflen)
+decode_clnp_prefix(netdissect_options *ndo,
+ const u_char *pptr, char *buf, u_int buflen)
{
- u_int8_t addr[19];
+ uint8_t addr[19];
u_int plen;
- TCHECK(pptr[0]);
+ ND_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);
+ ND_TCHECK2(pptr[4], (plen + 7) / 8);
memcpy(&addr, &pptr[4], (plen + 7) / 8);
if (plen % 8) {
addr[(plen + 7) / 8 - 1] &=
}
static int
-decode_labeled_vpn_clnp_prefix(const u_char *pptr, char *buf, u_int buflen)
+decode_labeled_vpn_clnp_prefix(netdissect_options *ndo,
+ const u_char *pptr, char *buf, u_int buflen)
{
- u_int8_t addr[19];
+ uint8_t addr[19];
u_int plen;
- TCHECK(pptr[0]);
+ ND_TCHECK(pptr[0]);
plen = pptr[0]; /* get prefix length */
if ((24+64) > plen)
return -1;
memset(&addr, 0, sizeof(addr));
- TCHECK2(pptr[12], (plen + 7) / 8);
+ ND_TCHECK2(pptr[12], (plen + 7) / 8);
memcpy(&addr, &pptr[12], (plen + 7) / 8);
if (plen % 8) {
addr[(plen + 7) / 8 - 1] &=
}
/* 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),
+ bgp_vpn_rd_print(ndo, pptr+4),
isonsap_string(addr,(plen + 7) / 8),
plen,
EXTRACT_24BITS(pptr+1)>>4,
return -2;
}
+/*
+ * bgp_attr_get_as_size
+ *
+ * Try to find the size of the ASs encoded in an as-path. It is not obvious, as
+ * both Old speakers that do not support 4 byte AS, and the new speakers that do
+ * support, exchange AS-Path with the same path-attribute type value 0x02.
+ */
static int
-bgp_attr_print(const struct bgp_attr *attr, const u_char *pptr, int len)
+bgp_attr_get_as_size(netdissect_options *ndo,
+ uint8_t bgpa_type, const u_char *pptr, int len)
+{
+ const u_char *tptr = pptr;
+
+ /*
+ * If the path attribute is the optional AS4 path type, then we already
+ * know, that ASs must be encoded in 4 byte format.
+ */
+ if (bgpa_type == BGPTYPE_AS4_PATH) {
+ return 4;
+ }
+
+ /*
+ * Let us assume that ASs are of 2 bytes in size, and check if the AS-Path
+ * TLV is good. If not, ask the caller to try with AS encoded as 4 bytes
+ * each.
+ */
+ while (tptr < pptr + len) {
+ ND_TCHECK(tptr[0]);
+
+ /*
+ * If we do not find a valid segment type, our guess might be wrong.
+ */
+ if (tptr[0] < BGP_AS_SEG_TYPE_MIN || tptr[0] > BGP_AS_SEG_TYPE_MAX) {
+ goto trunc;
+ }
+ ND_TCHECK(tptr[1]);
+ tptr += 2 + tptr[1] * 2;
+ }
+
+ /*
+ * If we correctly reached end of the AS path attribute data content,
+ * then most likely ASs were indeed encoded as 2 bytes.
+ */
+ if (tptr == pptr + len) {
+ return 2;
+ }
+
+trunc:
+
+ /*
+ * We can come here, either we did not have enough data, or if we
+ * try to decode 4 byte ASs in 2 byte format. Either way, return 4,
+ * so that calller can try to decode each AS as of 4 bytes. If indeed
+ * there was not enough data, it will crib and end the parse anyways.
+ */
+ return 4;
+}
+
+static int
+bgp_attr_print(netdissect_options *ndo,
+ u_int atype, const u_char *pptr, u_int len)
{
int i;
- u_int16_t af;
- u_int8_t safi, snpa, nhlen;
+ uint16_t af;
+ uint8_t safi, snpa, nhlen;
union { /* copy buffer for bandwidth values */
- float f;
- u_int32_t i;
+ float f;
+ uint32_t i;
} bw;
int advance;
- int tlen;
+ u_int tlen;
const u_char *tptr;
char buf[MAXHOSTNAMELEN + 100];
char tokbuf[TOKBUFSIZE];
+ int as_size;
tptr = pptr;
tlen=len;
- switch (attr->bgpa_type) {
+ switch (atype) {
case BGPTYPE_ORIGIN:
if (len != 1)
- printf("invalid len");
+ ND_PRINT((ndo, "invalid len"));
else {
- TCHECK(*tptr);
- printf("%s", tok2strbuf(bgp_origin_values,
+ ND_TCHECK(*tptr);
+ ND_PRINT((ndo, "%s", tok2strbuf(bgp_origin_values,
"Unknown Origin Typecode",
tptr[0],
- tokbuf, sizeof(tokbuf)));
+ tokbuf, sizeof(tokbuf))));
}
break;
+
+ /*
+ * Process AS4 byte path and AS2 byte path attributes here.
+ */
+ case BGPTYPE_AS4_PATH:
case BGPTYPE_AS_PATH:
if (len % 2) {
- printf("invalid len");
+ ND_PRINT((ndo, "invalid len"));
break;
}
if (!len) {
- printf("empty");
+ ND_PRINT((ndo, "empty"));
break;
}
+ /*
+ * BGP updates exchanged between New speakers that support 4
+ * byte AS, ASs are always encoded in 4 bytes. There is no
+ * definitive way to find this, just by the packet's
+ * contents. So, check for packet's TLV's sanity assuming
+ * 2 bytes first, and it does not pass, assume that ASs are
+ * encoded in 4 bytes format and move on.
+ */
+ as_size = bgp_attr_get_as_size(ndo, atype, pptr, len);
+
while (tptr < pptr + len) {
- TCHECK(tptr[0]);
- printf("%s", tok2strbuf(bgp_as_path_segment_open_values,
+ ND_TCHECK(tptr[0]);
+ ND_PRINT((ndo, "%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]));
+ tokbuf, sizeof(tokbuf))));
+ for (i = 0; i < tptr[1] * as_size; i += as_size) {
+ ND_TCHECK2(tptr[2 + i], as_size);
+ ND_PRINT((ndo, "%s ",
+ as_printf(ndo, astostr, sizeof(astostr),
+ as_size == 2 ?
+ EXTRACT_16BITS(&tptr[2 + i]) :
+ EXTRACT_32BITS(&tptr[2 + i]))));
}
- TCHECK(tptr[0]);
- printf("%s", tok2strbuf(bgp_as_path_segment_close_values,
+ ND_TCHECK(tptr[0]);
+ ND_PRINT((ndo, "%s", tok2strbuf(bgp_as_path_segment_close_values,
"?", tptr[0],
- tokbuf, sizeof(tokbuf)));
- TCHECK(tptr[1]);
- tptr += 2 + tptr[1] * 2;
+ tokbuf, sizeof(tokbuf))));
+ ND_TCHECK(tptr[1]);
+ tptr += 2 + tptr[1] * as_size;
}
break;
case BGPTYPE_NEXT_HOP:
if (len != 4)
- printf("invalid len");
+ ND_PRINT((ndo, "invalid len"));
else {
- TCHECK2(tptr[0], 4);
- printf("%s", getname(tptr));
+ ND_TCHECK2(tptr[0], 4);
+ ND_PRINT((ndo, "%s", getname(ndo, tptr)));
}
break;
case BGPTYPE_MULTI_EXIT_DISC:
case BGPTYPE_LOCAL_PREF:
if (len != 4)
- printf("invalid len");
+ ND_PRINT((ndo, "invalid len"));
else {
- TCHECK2(tptr[0], 4);
- printf("%u", EXTRACT_32BITS(tptr));
+ ND_TCHECK2(tptr[0], 4);
+ ND_PRINT((ndo, "%u", EXTRACT_32BITS(tptr)));
}
break;
case BGPTYPE_ATOMIC_AGGREGATE:
if (len != 0)
- printf("invalid len");
+ ND_PRINT((ndo, "invalid len"));
break;
- case BGPTYPE_AGGREGATOR:
- if (len != 6) {
- printf("invalid len");
+ case BGPTYPE_AGGREGATOR:
+
+ /*
+ * Depending on the AS encoded is of 2 bytes or of 4 bytes,
+ * the length of this PA can be either 6 bytes or 8 bytes.
+ */
+ if (len != 6 && len != 8) {
+ ND_PRINT((ndo, "invalid len"));
+ break;
+ }
+ ND_TCHECK2(tptr[0], len);
+ if (len == 6) {
+ ND_PRINT((ndo, " AS #%s, origin %s",
+ as_printf(ndo, astostr, sizeof(astostr), EXTRACT_16BITS(tptr)),
+ getname(ndo, tptr + 2)));
+ } else {
+ ND_PRINT((ndo, " AS #%s, origin %s",
+ as_printf(ndo, astostr, sizeof(astostr),
+ EXTRACT_32BITS(tptr)), getname(ndo, tptr + 4)));
+ }
+ break;
+ case BGPTYPE_AGGREGATOR4:
+ if (len != 8) {
+ ND_PRINT((ndo, "invalid len"));
break;
}
- TCHECK2(tptr[0], 6);
- printf(" AS #%u, origin %s", EXTRACT_16BITS(tptr),
- getname(tptr + 2));
+ ND_TCHECK2(tptr[0], 8);
+ ND_PRINT((ndo, " AS #%s, origin %s",
+ as_printf(ndo, astostr, sizeof(astostr), EXTRACT_32BITS(tptr)),
+ getname(ndo, tptr + 4)));
break;
case BGPTYPE_COMMUNITIES:
if (len % 4) {
- printf("invalid len");
+ ND_PRINT((ndo, "invalid len"));
break;
}
while (tlen>0) {
- u_int32_t comm;
- TCHECK2(tptr[0], 4);
+ uint32_t comm;
+ ND_TCHECK2(tptr[0], 4);
comm = EXTRACT_32BITS(tptr);
switch (comm) {
case BGP_COMMUNITY_NO_EXPORT:
- printf(" NO_EXPORT");
+ ND_PRINT((ndo, " NO_EXPORT"));
break;
case BGP_COMMUNITY_NO_ADVERT:
- printf(" NO_ADVERTISE");
+ ND_PRINT((ndo, " NO_ADVERTISE"));
break;
case BGP_COMMUNITY_NO_EXPORT_SUBCONFED:
- printf(" NO_EXPORT_SUBCONFED");
+ ND_PRINT((ndo, " NO_EXPORT_SUBCONFED"));
break;
default:
- printf("%u:%u%s",
+ ND_PRINT((ndo, "%u:%u%s",
(comm >> 16) & 0xffff,
comm & 0xffff,
- (tlen>4) ? ", " : "");
+ (tlen>4) ? ", " : ""));
break;
}
tlen -=4;
break;
case BGPTYPE_ORIGINATOR_ID:
if (len != 4) {
- printf("invalid len");
+ ND_PRINT((ndo, "invalid len"));
break;
}
- TCHECK2(tptr[0], 4);
- printf("%s",getname(tptr));
+ ND_TCHECK2(tptr[0], 4);
+ ND_PRINT((ndo, "%s",getname(ndo, tptr)));
break;
case BGPTYPE_CLUSTER_LIST:
if (len % 4) {
- printf("invalid len");
+ ND_PRINT((ndo, "invalid len"));
break;
}
while (tlen>0) {
- TCHECK2(tptr[0], 4);
- printf("%s%s",
- getname(tptr),
- (tlen>4) ? ", " : "");
+ ND_TCHECK2(tptr[0], 4);
+ ND_PRINT((ndo, "%s%s",
+ getname(ndo, tptr),
+ (tlen>4) ? ", " : ""));
tlen -=4;
tptr +=4;
}
break;
case BGPTYPE_MP_REACH_NLRI:
- TCHECK2(tptr[0], 3);
+ ND_TCHECK2(tptr[0], 3);
af = EXTRACT_16BITS(tptr);
safi = tptr[2];
-
- printf("\n\t AFI: %s (%u), %sSAFI: %s (%u)",
+
+ ND_PRINT((ndo, "\n\t AFI: %s (%u), %sSAFI: %s (%u)",
tok2strbuf(af_values, "Unknown AFI", af,
tokbuf, sizeof(tokbuf)),
af,
(safi>128) ? "vendor specific " : "", /* 128 is meanwhile wellknown */
tok2strbuf(bgp_safi_values, "Unknown SAFI", safi,
tokbuf, sizeof(tokbuf)),
- safi);
+ safi));
switch(af<<8 | safi) {
case (AFNUM_INET<<8 | SAFNUM_UNICAST):
case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN):
+ case (AFNUM_INET<<8 | SAFNUM_MDT):
#ifdef INET6
case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
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);
+ ND_TCHECK2(tptr[0], tlen);
+ ND_PRINT((ndo, "\n\t no AFI %u / SAFI %u decoder", af, safi));
+ if (ndo->ndo_vflag <= 1)
+ print_unknown_data(ndo, tptr, "\n\t ", tlen);
goto done;
break;
}
tptr +=3;
- TCHECK(tptr[0]);
+ ND_TCHECK(tptr[0]);
nhlen = tptr[0];
tlen = nhlen;
tptr++;
if (tlen) {
- printf("\n\t nexthop: ");
+ int nnh = 0;
+ ND_PRINT((ndo, "\n\t nexthop: "));
while (tlen > 0) {
+ if ( nnh++ > 0 ) {
+ ND_PRINT((ndo, ", " ));
+ }
switch(af<<8 | safi) {
case (AFNUM_INET<<8 | SAFNUM_UNICAST):
case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN):
- if (tlen < (int)sizeof(struct in_addr)) {
- printf("invalid len");
+ case (AFNUM_INET<<8 | SAFNUM_MDT):
+ if (tlen < (int)sizeof(struct in_addr)) {
+ ND_PRINT((ndo, "invalid len"));
tlen = 0;
} else {
- TCHECK2(tptr[0], sizeof(struct in_addr));
- printf("%s",getname(tptr));
+ ND_TCHECK2(tptr[0], sizeof(struct in_addr));
+ ND_PRINT((ndo, "%s",getname(ndo, tptr)));
tlen -= sizeof(struct in_addr);
tptr += sizeof(struct in_addr);
}
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");
+ ND_PRINT((ndo, "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));
+ ND_TCHECK2(tptr[0], sizeof(struct in_addr)+BGP_VPN_RD_LEN);
+ ND_PRINT((ndo, "RD: %s, %s",
+ bgp_vpn_rd_print(ndo, tptr),
+ getname(ndo, tptr+BGP_VPN_RD_LEN)));
tlen -= (sizeof(struct in_addr)+BGP_VPN_RD_LEN);
tptr += (sizeof(struct in_addr)+BGP_VPN_RD_LEN);
}
case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
if (tlen < (int)sizeof(struct in6_addr)) {
- printf("invalid len");
+ ND_PRINT((ndo, "invalid len"));
tlen = 0;
} else {
- TCHECK2(tptr[0], sizeof(struct in6_addr));
- printf("%s", getname6(tptr));
+ ND_TCHECK2(tptr[0], sizeof(struct in6_addr));
+ ND_PRINT((ndo, "%s", getname6(ndo, tptr)));
tlen -= sizeof(struct in6_addr);
tptr += sizeof(struct in6_addr);
}
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");
+ ND_PRINT((ndo, "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));
+ ND_TCHECK2(tptr[0], sizeof(struct in6_addr)+BGP_VPN_RD_LEN);
+ ND_PRINT((ndo, "RD: %s, %s",
+ bgp_vpn_rd_print(ndo, tptr),
+ getname6(ndo, tptr+BGP_VPN_RD_LEN)));
tlen -= (sizeof(struct in6_addr)+BGP_VPN_RD_LEN);
tptr += (sizeof(struct in6_addr)+BGP_VPN_RD_LEN);
}
case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
if (tlen < (int)sizeof(struct in_addr)) {
- printf("invalid len");
+ ND_PRINT((ndo, "invalid len"));
tlen = 0;
} else {
- TCHECK2(tptr[0], sizeof(struct in_addr));
- printf("%s", getname(tptr));
+ ND_TCHECK2(tptr[0], sizeof(struct in_addr));
+ ND_PRINT((ndo, "%s", getname(ndo, tptr)));
tlen -= (sizeof(struct in_addr));
tptr += (sizeof(struct in_addr));
}
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));
+ ND_TCHECK2(tptr[0], tlen);
+ ND_PRINT((ndo, "%s", isonsap_string(tptr, tlen)));
tptr += tlen;
tlen = 0;
break;
case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
if (tlen < BGP_VPN_RD_LEN+1) {
- printf("invalid len");
+ ND_PRINT((ndo, "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));
+ ND_TCHECK2(tptr[0], tlen);
+ ND_PRINT((ndo, "RD: %s, %s",
+ bgp_vpn_rd_print(ndo, 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));
+ ND_PRINT((ndo, " = %s", getname(ndo, 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));
+ ND_PRINT((ndo, " = %s", getname6(ndo, 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);
+ ND_TCHECK2(tptr[0], tlen);
+ ND_PRINT((ndo, "no AFI %u/SAFI %u decoder", af, safi));
+ if (ndo->ndo_vflag <= 1)
+ print_unknown_data(ndo, tptr, "\n\t ", tlen);
tptr += tlen;
tlen = 0;
goto done;
}
}
}
- printf(", nh-length: %u", nhlen);
+ ND_PRINT((ndo, ", nh-length: %u", nhlen));
tptr += tlen;
- TCHECK(tptr[0]);
+ ND_TCHECK(tptr[0]);
snpa = tptr[0];
tptr++;
if (snpa) {
- printf("\n\t %u SNPA", snpa);
+ ND_PRINT((ndo, "\n\t %u SNPA", snpa));
for (/*nothing*/; snpa > 0; snpa--) {
- TCHECK(tptr[0]);
- printf("\n\t %d bytes", tptr[0]);
+ ND_TCHECK(tptr[0]);
+ ND_PRINT((ndo, "\n\t %d bytes", tptr[0]));
tptr += tptr[0] + 1;
}
} else {
- printf(", no SNPA");
+ ND_PRINT((ndo, ", no SNPA"));
}
while (len - (tptr - pptr) > 0) {
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));
+ advance = decode_prefix4(ndo, tptr, len, buf, sizeof(buf));
if (advance == -1)
- printf("\n\t (illegal prefix length)");
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
else if (advance == -2)
goto trunc;
+ else if (advance == -3)
+ break; /* bytes left, but not enough */
else
- printf("\n\t %s", buf);
+ ND_PRINT((ndo, "\n\t %s", buf));
break;
case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
- advance = decode_labeled_prefix4(tptr, buf, sizeof(buf));
+ advance = decode_labeled_prefix4(ndo, tptr, len, buf, sizeof(buf));
if (advance == -1)
- printf("\n\t (illegal prefix length)");
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
else if (advance == -2)
goto trunc;
+ else if (advance == -3)
+ break; /* bytes left, but not enough */
else
- printf("\n\t %s", buf);
+ ND_PRINT((ndo, "\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));
+ advance = decode_labeled_vpn_prefix4(ndo, tptr, buf, sizeof(buf));
if (advance == -1)
- printf("\n\t (illegal prefix length)");
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
else if (advance == -2)
goto trunc;
else
- printf("\n\t %s", buf);
+ ND_PRINT((ndo, "\n\t %s", buf));
break;
case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
- advance = decode_rt_routing_info(tptr, buf, sizeof(buf));
+ advance = decode_rt_routing_info(ndo, tptr, buf, sizeof(buf));
if (advance == -1)
- printf("\n\t (illegal prefix length)");
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
else if (advance == -2)
goto trunc;
else
- printf("\n\t %s", buf);
+ ND_PRINT((ndo, "\n\t %s", buf));
break;
case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN): /* fall through */
case (AFNUM_INET6<<8 | SAFNUM_MULTICAST_VPN):
- advance = decode_multicast_vpn(tptr, buf, sizeof(buf));
+ advance = decode_multicast_vpn(ndo, tptr, buf, sizeof(buf));
if (advance == -1)
- printf("\n\t (illegal prefix length)");
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
else if (advance == -2)
goto trunc;
else
- printf("\n\t %s", buf);
+ ND_PRINT((ndo, "\n\t %s", buf));
break;
+
+ case (AFNUM_INET<<8 | SAFNUM_MDT):
+ advance = decode_mdt_vpn_nlri(ndo, tptr, buf, sizeof(buf));
+ if (advance == -1)
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
+ else if (advance == -2)
+ goto trunc;
+ else
+ ND_PRINT((ndo, "\n\t %s", buf));
+ break;
#ifdef INET6
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));
+ advance = decode_prefix6(ndo, tptr, len, buf, sizeof(buf));
if (advance == -1)
- printf("\n\t (illegal prefix length)");
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
else if (advance == -2)
goto trunc;
+ else if (advance == -3)
+ break; /* bytes left, but not enough */
else
- printf("\n\t %s", buf);
+ ND_PRINT((ndo, "\n\t %s", buf));
break;
case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
- advance = decode_labeled_prefix6(tptr, buf, sizeof(buf));
+ advance = decode_labeled_prefix6(ndo, tptr, len, buf, sizeof(buf));
if (advance == -1)
- printf("\n\t (illegal prefix length)");
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
else if (advance == -2)
goto trunc;
+ else if (advance == -3)
+ break; /* bytes left, but not enough */
else
- printf("\n\t %s", buf);
+ ND_PRINT((ndo, "\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));
+ advance = decode_labeled_vpn_prefix6(ndo, tptr, buf, sizeof(buf));
if (advance == -1)
- printf("\n\t (illegal prefix length)");
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
else if (advance == -2)
goto trunc;
else
- printf("\n\t %s", buf);
+ ND_PRINT((ndo, "\n\t %s", buf));
break;
#endif
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));
+ advance = decode_labeled_vpn_l2(ndo, tptr, buf, sizeof(buf));
if (advance == -1)
- printf("\n\t (illegal length)");
+ ND_PRINT((ndo, "\n\t (illegal length)"));
else if (advance == -2)
goto trunc;
else
- printf("\n\t %s", buf);
+ ND_PRINT((ndo, "\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));
+ advance = decode_clnp_prefix(ndo, tptr, buf, sizeof(buf));
if (advance == -1)
- printf("\n\t (illegal prefix length)");
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
else if (advance == -2)
goto trunc;
else
- printf("\n\t %s", buf);
+ ND_PRINT((ndo, "\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));
+ advance = decode_labeled_vpn_clnp_prefix(ndo, tptr, buf, sizeof(buf));
if (advance == -1)
- printf("\n\t (illegal prefix length)");
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
else if (advance == -2)
goto trunc;
else
- printf("\n\t %s", buf);
- break;
+ ND_PRINT((ndo, "\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);
+ ND_TCHECK2(*tptr,tlen);
+ ND_PRINT((ndo, "\n\t no AFI %u / SAFI %u decoder", af, safi));
+ if (ndo->ndo_vflag <= 1)
+ print_unknown_data(ndo, tptr, "\n\t ", tlen);
advance = 0;
tptr = pptr + len;
break;
break;
case BGPTYPE_MP_UNREACH_NLRI:
- TCHECK2(tptr[0], BGP_MP_NLRI_MINSIZE);
+ ND_TCHECK2(tptr[0], BGP_MP_NLRI_MINSIZE);
af = EXTRACT_16BITS(tptr);
safi = tptr[2];
- printf("\n\t AFI: %s (%u), %sSAFI: %s (%u)",
+ ND_PRINT((ndo, "\n\t AFI: %s (%u), %sSAFI: %s (%u)",
tok2strbuf(af_values, "Unknown AFI", af,
tokbuf, sizeof(tokbuf)),
af,
(safi>128) ? "vendor specific " : "", /* 128 is meanwhile wellknown */
tok2strbuf(bgp_safi_values, "Unknown SAFI", safi,
tokbuf, sizeof(tokbuf)),
- safi);
+ safi));
if (len == BGP_MP_NLRI_MINSIZE)
- printf("\n\t End-of-Rib Marker (empty NLRI)");
+ ND_PRINT((ndo, "\n\t End-of-Rib Marker (empty NLRI)"));
tptr += 3;
-
+
while (len - (tptr - pptr) > 0) {
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));
+ advance = decode_prefix4(ndo, tptr, len, buf, sizeof(buf));
if (advance == -1)
- printf("\n\t (illegal prefix length)");
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
else if (advance == -2)
goto trunc;
+ else if (advance == -3)
+ break; /* bytes left, but not enough */
else
- printf("\n\t %s", buf);
+ ND_PRINT((ndo, "\n\t %s", buf));
break;
case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
- advance = decode_labeled_prefix4(tptr, buf, sizeof(buf));
+ advance = decode_labeled_prefix4(ndo, tptr, len, buf, sizeof(buf));
if (advance == -1)
- printf("\n\t (illegal prefix length)");
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
else if (advance == -2)
goto trunc;
+ else if (advance == -3)
+ break; /* bytes left, but not enough */
else
- printf("\n\t %s", buf);
+ ND_PRINT((ndo, "\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));
+ advance = decode_labeled_vpn_prefix4(ndo, tptr, buf, sizeof(buf));
if (advance == -1)
- printf("\n\t (illegal prefix length)");
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
else if (advance == -2)
goto trunc;
else
- printf("\n\t %s", buf);
+ ND_PRINT((ndo, "\n\t %s", buf));
break;
#ifdef INET6
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));
+ advance = decode_prefix6(ndo, tptr, len, buf, sizeof(buf));
if (advance == -1)
- printf("\n\t (illegal prefix length)");
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
else if (advance == -2)
goto trunc;
+ else if (advance == -3)
+ break; /* bytes left, but not enough */
else
- printf("\n\t %s", buf);
+ ND_PRINT((ndo, "\n\t %s", buf));
break;
case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
- advance = decode_labeled_prefix6(tptr, buf, sizeof(buf));
+ advance = decode_labeled_prefix6(ndo, tptr, len, buf, sizeof(buf));
if (advance == -1)
- printf("\n\t (illegal prefix length)");
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
else if (advance == -2)
goto trunc;
+ else if (advance == -3)
+ break; /* bytes left, but not enough */
else
- printf("\n\t %s", buf);
+ ND_PRINT((ndo, "\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));
+ advance = decode_labeled_vpn_prefix6(ndo, tptr, buf, sizeof(buf));
if (advance == -1)
- printf("\n\t (illegal prefix length)");
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
else if (advance == -2)
goto trunc;
else
- printf("\n\t %s", buf);
+ ND_PRINT((ndo, "\n\t %s", buf));
break;
#endif
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));
+ advance = decode_labeled_vpn_l2(ndo, tptr, buf, sizeof(buf));
if (advance == -1)
- printf("\n\t (illegal length)");
+ ND_PRINT((ndo, "\n\t (illegal length)"));
else if (advance == -2)
goto trunc;
else
- printf("\n\t %s", buf);
+ ND_PRINT((ndo, "\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));
+ advance = decode_clnp_prefix(ndo, tptr, buf, sizeof(buf));
if (advance == -1)
- printf("\n\t (illegal prefix length)");
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
else if (advance == -2)
goto trunc;
else
- printf("\n\t %s", buf);
+ ND_PRINT((ndo, "\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));
+ advance = decode_labeled_vpn_clnp_prefix(ndo, tptr, buf, sizeof(buf));
if (advance == -1)
- printf("\n\t (illegal prefix length)");
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
+ else if (advance == -2)
+ goto trunc;
+ else
+ ND_PRINT((ndo, "\n\t %s", buf));
+ break;
+ case (AFNUM_INET<<8 | SAFNUM_MDT):
+ advance = decode_mdt_vpn_nlri(ndo, tptr, buf, sizeof(buf));
+ if (advance == -1)
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
else if (advance == -2)
goto trunc;
else
- printf("\n\t %s", buf);
- break;
+ ND_PRINT((ndo, "\n\t %s", buf));
+ break;
case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN): /* fall through */
case (AFNUM_INET6<<8 | SAFNUM_MULTICAST_VPN):
- advance = decode_multicast_vpn(tptr, buf, sizeof(buf));
+ advance = decode_multicast_vpn(ndo, tptr, buf, sizeof(buf));
if (advance == -1)
- printf("\n\t (illegal prefix length)");
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
else if (advance == -2)
goto trunc;
else
- printf("\n\t %s", buf);
+ ND_PRINT((ndo, "\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);
+ ND_TCHECK2(*(tptr-3),tlen);
+ ND_PRINT((ndo, "no AFI %u / SAFI %u decoder", af, safi));
+ if (ndo->ndo_vflag <= 1)
+ print_unknown_data(ndo, tptr-3, "\n\t ", tlen);
advance = 0;
tptr = pptr + len;
break;
break;
case BGPTYPE_EXTD_COMMUNITIES:
if (len % 8) {
- printf("invalid len");
+ ND_PRINT((ndo, "invalid len"));
break;
}
while (tlen>0) {
- u_int16_t extd_comm;
+ uint16_t extd_comm;
- TCHECK2(tptr[0], 2);
+ ND_TCHECK2(tptr[0], 2);
extd_comm=EXTRACT_16BITS(tptr);
- printf("\n\t %s (0x%04x), Flags [%s]",
+ ND_PRINT((ndo, "\n\t %s (0x%04x), Flags [%s]",
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));
+ bittok2str(bgp_extd_comm_flag_values, "none", extd_comm)));
- TCHECK2(*(tptr+2), 6);
+ ND_TCHECK2(*(tptr+2), 6);
switch(extd_comm) {
case BGP_EXT_COM_RT_0:
case BGP_EXT_COM_RO_0:
- printf(": %u:%s",
+ case BGP_EXT_COM_L2VPN_RT_0:
+ ND_PRINT((ndo, ": %u:%u (= %s)",
EXTRACT_16BITS(tptr+2),
- getname(tptr+4));
+ EXTRACT_32BITS(tptr+4),
+ getname(ndo, tptr+4)));
break;
case BGP_EXT_COM_RT_1:
case BGP_EXT_COM_RO_1:
+ case BGP_EXT_COM_L2VPN_RT_1:
case BGP_EXT_COM_VRF_RT_IMP:
- printf(": %s:%u",
- getname(tptr+2),
- EXTRACT_16BITS(tptr+6));
+ ND_PRINT((ndo, ": %s:%u",
+ getname(ndo, tptr+2),
+ EXTRACT_16BITS(tptr+6)));
break;
case BGP_EXT_COM_RT_2:
case BGP_EXT_COM_RO_2:
- printf(": %u:%u",
- EXTRACT_32BITS(tptr+2),
- EXTRACT_16BITS(tptr+6));
- break;
+ ND_PRINT((ndo, ": %s:%u",
+ as_printf(ndo, astostr, sizeof(astostr),
+ EXTRACT_32BITS(tptr+2)), EXTRACT_16BITS(tptr+6)));
+ break;
case BGP_EXT_COM_LINKBAND:
bw.i = EXTRACT_32BITS(tptr+2);
- printf(": bandwidth: %.3f Mbps",
- bw.f*8/1000000);
+ ND_PRINT((ndo, ": bandwidth: %.3f Mbps",
+ bw.f*8/1000000));
break;
case BGP_EXT_COM_VPN_ORIGIN:
case BGP_EXT_COM_VPN_ORIGIN2:
case BGP_EXT_COM_VPN_ORIGIN4:
case BGP_EXT_COM_OSPF_RID:
case BGP_EXT_COM_OSPF_RID2:
- printf("%s", getname(tptr+2));
+ ND_PRINT((ndo, "%s", getname(ndo, tptr+2)));
break;
case BGP_EXT_COM_OSPF_RTYPE:
- case BGP_EXT_COM_OSPF_RTYPE2:
- printf(": area:%s, router-type:%s, metric-type:%s%s",
- getname(tptr+2),
+ case BGP_EXT_COM_OSPF_RTYPE2:
+ ND_PRINT((ndo, ": area:%s, router-type:%s, metric-type:%s%s",
+ getname(ndo, tptr+2),
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) || (*(tptr+6) == BGP_OSPF_RTYPE_NSSA)) ? "E1" : "");
+ ((*(tptr+6) == BGP_OSPF_RTYPE_EXT) || (*(tptr+6) == BGP_OSPF_RTYPE_NSSA)) ? "E1" : ""));
break;
case BGP_EXT_COM_L2INFO:
- printf(": %s Control Flags [0x%02x]:MTU %u",
+ ND_PRINT((ndo, ": %s Control Flags [0x%02x]:MTU %u",
tok2strbuf(l2vpn_encaps_values,
"unknown encaps",
*(tptr+2),
tokbuf, sizeof(tokbuf)),
*(tptr+3),
- EXTRACT_16BITS(tptr+4));
+ EXTRACT_16BITS(tptr+4)));
break;
case BGP_EXT_COM_SOURCE_AS:
- printf(": AS %u", EXTRACT_16BITS(tptr+2));
+ ND_PRINT((ndo, ": AS %u", EXTRACT_16BITS(tptr+2)));
break;
default:
- TCHECK2(*tptr,8);
- print_unknown_data(tptr,"\n\t ",8);
+ ND_TCHECK2(*tptr,8);
+ print_unknown_data(ndo, tptr, "\n\t ", 8);
break;
}
tlen -=8;
case BGPTYPE_PMSI_TUNNEL:
{
- u_int8_t tunnel_type, flags;
-
+ uint8_t tunnel_type, flags;
+
tunnel_type = *(tptr+1);
flags = *tptr;
tlen = len;
- TCHECK2(tptr[0], 5);
- printf("\n\t Tunnel-type %s (%u), Flags [%s], MPLS Label %u",
+ ND_TCHECK2(tptr[0], 5);
+ ND_PRINT((ndo, "\n\t Tunnel-type %s (%u), Flags [%s], MPLS Label %u",
tok2str(bgp_pmsi_tunnel_values, "Unknown", tunnel_type),
tunnel_type,
bittok2str(bgp_pmsi_flag_values, "none", flags),
- EXTRACT_24BITS(tptr+2)>>4);
+ EXTRACT_24BITS(tptr+2)>>4));
tptr +=5;
tlen -= 5;
switch (tunnel_type) {
case BGP_PMSI_TUNNEL_PIM_SM: /* fall through */
case BGP_PMSI_TUNNEL_PIM_BIDIR:
- TCHECK2(tptr[0], 8);
- printf("\n\t Sender %s, P-Group %s",
- ipaddr_string(tptr),
- ipaddr_string(tptr+4));
+ ND_TCHECK2(tptr[0], 8);
+ ND_PRINT((ndo, "\n\t Sender %s, P-Group %s",
+ ipaddr_string(ndo, tptr),
+ ipaddr_string(ndo, tptr+4)));
break;
case BGP_PMSI_TUNNEL_PIM_SSM:
- TCHECK2(tptr[0], 8);
- printf("\n\t Root-Node %s, P-Group %s",
- ipaddr_string(tptr),
- ipaddr_string(tptr+4));
+ ND_TCHECK2(tptr[0], 8);
+ ND_PRINT((ndo, "\n\t Root-Node %s, P-Group %s",
+ ipaddr_string(ndo, tptr),
+ ipaddr_string(ndo, tptr+4)));
break;
case BGP_PMSI_TUNNEL_INGRESS:
- TCHECK2(tptr[0], 4);
- printf("\n\t Tunnel-Endpoint %s",
- ipaddr_string(tptr));
+ ND_TCHECK2(tptr[0], 4);
+ ND_PRINT((ndo, "\n\t Tunnel-Endpoint %s",
+ ipaddr_string(ndo, tptr)));
break;
case BGP_PMSI_TUNNEL_LDP_P2MP: /* fall through */
case BGP_PMSI_TUNNEL_LDP_MP2MP:
- TCHECK2(tptr[0], 8);
- printf("\n\t Root-Node %s, LSP-ID 0x%08x",
- ipaddr_string(tptr),
- EXTRACT_32BITS(tptr+4));
+ ND_TCHECK2(tptr[0], 8);
+ ND_PRINT((ndo, "\n\t Root-Node %s, LSP-ID 0x%08x",
+ ipaddr_string(ndo, tptr),
+ EXTRACT_32BITS(tptr+4)));
break;
case BGP_PMSI_TUNNEL_RSVP_P2MP:
- TCHECK2(tptr[0], 8);
- printf("\n\t Extended-Tunnel-ID %s, P2MP-ID 0x%08x",
- ipaddr_string(tptr),
- EXTRACT_32BITS(tptr+4));
+ ND_TCHECK2(tptr[0], 8);
+ ND_PRINT((ndo, "\n\t Extended-Tunnel-ID %s, P2MP-ID 0x%08x",
+ ipaddr_string(ndo, tptr),
+ EXTRACT_32BITS(tptr+4)));
break;
default:
- if (vflag <= 1) {
- print_unknown_data(tptr,"\n\t ",tlen);
+ if (ndo->ndo_vflag <= 1) {
+ print_unknown_data(ndo, tptr, "\n\t ", tlen);
}
}
break;
}
case BGPTYPE_ATTR_SET:
- TCHECK2(tptr[0], 4);
- printf("\n\t Origin AS: %u", EXTRACT_32BITS(tptr));
- tptr+=4;
+ ND_TCHECK2(tptr[0], 4);
+ if (len < 4)
+ goto trunc;
+ ND_PRINT((ndo, "\n\t Origin AS: %s",
+ as_printf(ndo, astostr, sizeof(astostr), EXTRACT_32BITS(tptr))));
+ tptr+=4;
len -=4;
- while (len >= 2 ) {
- 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",
+ while (len) {
+ u_int aflags, atype, alenlen, alen;
+
+ ND_TCHECK2(tptr[0], 2);
+ if (len < 2)
+ goto trunc;
+ aflags = *tptr;
+ atype = *(tptr + 1);
+ tptr += 2;
+ len -= 2;
+ alenlen = bgp_attr_lenlen(aflags, tptr);
+ ND_TCHECK2(tptr[0], alenlen);
+ if (len < alenlen)
+ goto trunc;
+ alen = bgp_attr_len(aflags, tptr);
+ tptr += alenlen;
+ len -= alenlen;
+
+ ND_PRINT((ndo, "\n\t %s (%u), length: %u",
tok2strbuf(bgp_attr_values,
- "Unknown Attribute", bgpa.bgpa_type,
- tokbuf, sizeof(tokbuf)),
- bgpa.bgpa_type,
- alen);
-
- if (bgpa.bgpa_flags) {
- printf(", Flags [%s%s%s%s",
- bgpa.bgpa_flags & 0x80 ? "O" : "",
- bgpa.bgpa_flags & 0x40 ? "T" : "",
- bgpa.bgpa_flags & 0x20 ? "P" : "",
- bgpa.bgpa_flags & 0x10 ? "E" : "");
- if (bgpa.bgpa_flags & 0xf)
- printf("+%x", bgpa.bgpa_flags & 0xf);
- printf("]: ");
+ "Unknown Attribute", atype,
+ tokbuf, sizeof(tokbuf)),
+ atype,
+ alen));
+
+ if (aflags) {
+ ND_PRINT((ndo, ", Flags [%s%s%s%s",
+ aflags & 0x80 ? "O" : "",
+ aflags & 0x40 ? "T" : "",
+ aflags & 0x20 ? "P" : "",
+ aflags & 0x10 ? "E" : ""));
+ if (aflags & 0xf)
+ ND_PRINT((ndo, "+%x", aflags & 0xf));
+ ND_PRINT((ndo, "]: "));
}
/* FIXME check for recursion */
- if (!bgp_attr_print(&bgpa, tptr, alen))
+ if (!bgp_attr_print(ndo, atype, tptr, alen))
return 0;
tptr += alen;
len -= alen;
}
break;
-
+
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);
+ ND_TCHECK2(*pptr,len);
+ ND_PRINT((ndo, "\n\t no Attribute %u decoder", atype)); /* we have no decoder for the attribute */
+ if (ndo->ndo_vflag <= 1)
+ print_unknown_data(ndo, pptr, "\n\t ", len);
break;
}
- if (vflag > 1 && len) { /* omit zero length attributes*/
- TCHECK2(*pptr,len);
- print_unknown_data(pptr,"\n\t ",len);
+ if (ndo->ndo_vflag > 1 && len) { /* omit zero length attributes*/
+ ND_TCHECK2(*pptr,len);
+ print_unknown_data(ndo, pptr, "\n\t ", len);
}
return 1;
}
static void
-bgp_open_print(const u_char *dat, int length)
+bgp_capabilities_print(netdissect_options *ndo,
+ const u_char *opt, int caps_len)
+{
+ char tokbuf[TOKBUFSIZE];
+ char tokbuf2[TOKBUFSIZE];
+ int cap_type, cap_len, tcap_len, cap_offset;
+ int i = 0;
+
+ while (i < caps_len) {
+ ND_TCHECK2(opt[i], BGP_CAP_HEADER_SIZE);
+ cap_type=opt[i];
+ cap_len=opt[i+1];
+ tcap_len=cap_len;
+ ND_PRINT((ndo, "\n\t %s (%u), length: %u",
+ tok2strbuf(bgp_capcode_values, "Unknown",
+ cap_type, tokbuf, sizeof(tokbuf)),
+ cap_type,
+ cap_len));
+ ND_TCHECK2(opt[i+2], cap_len);
+ switch (cap_type) {
+ case BGP_CAPCODE_MP:
+ ND_PRINT((ndo, "\n\t\tAFI %s (%u), SAFI %s (%u)",
+ tok2strbuf(af_values, "Unknown",
+ EXTRACT_16BITS(opt+i+2),
+ tokbuf, sizeof(tokbuf)),
+ EXTRACT_16BITS(opt+i+2),
+ tok2strbuf(bgp_safi_values, "Unknown",
+ opt[i+5],
+ tokbuf, sizeof(tokbuf)),
+ opt[i+5]));
+ break;
+ case BGP_CAPCODE_RESTART:
+ ND_PRINT((ndo, "\n\t\tRestart Flags: [%s], Restart Time %us",
+ ((opt[i+2])&0x80) ? "R" : "none",
+ EXTRACT_16BITS(opt+i+2)&0xfff));
+ tcap_len-=2;
+ cap_offset=4;
+ while(tcap_len>=4) {
+ ND_PRINT((ndo, "\n\t\t AFI %s (%u), SAFI %s (%u), Forwarding state preserved: %s",
+ tok2strbuf(af_values,"Unknown",
+ EXTRACT_16BITS(opt+i+cap_offset),
+ tokbuf, sizeof(tokbuf)),
+ EXTRACT_16BITS(opt+i+cap_offset),
+ tok2strbuf(bgp_safi_values,"Unknown",
+ opt[i+cap_offset+2],
+ tokbuf2, sizeof(tokbuf2)),
+ opt[i+cap_offset+2],
+ ((opt[i+cap_offset+3])&0x80) ? "yes" : "no" ));
+ tcap_len-=4;
+ cap_offset+=4;
+ }
+ break;
+ case BGP_CAPCODE_RR:
+ case BGP_CAPCODE_RR_CISCO:
+ break;
+ case BGP_CAPCODE_AS_NEW:
+
+ /*
+ * Extract the 4 byte AS number encoded.
+ */
+ if (cap_len == 4) {
+ ND_PRINT((ndo, "\n\t\t 4 Byte AS %s",
+ as_printf(ndo, astostr, sizeof(astostr),
+ EXTRACT_32BITS(opt + i + 2))));
+ }
+ break;
+ default:
+ ND_PRINT((ndo, "\n\t\tno decoder for Capability %u",
+ cap_type));
+ if (ndo->ndo_vflag <= 1)
+ print_unknown_data(ndo, &opt[i+2], "\n\t\t", cap_len);
+ break;
+ }
+ if (ndo->ndo_vflag > 1 && cap_len > 0) {
+ print_unknown_data(ndo, &opt[i+2], "\n\t\t", cap_len);
+ }
+ i += BGP_CAP_HEADER_SIZE + cap_len;
+ }
+ return;
+
+trunc:
+ ND_PRINT((ndo, "[|BGP]"));
+}
+
+static void
+bgp_open_print(netdissect_options *ndo,
+ const u_char *dat, int length)
{
struct bgp_open bgpo;
struct bgp_opt bgpopt;
const u_char *opt;
- int i,cap_type,cap_len,tcap_len,cap_offset;
+ int i;
char tokbuf[TOKBUFSIZE];
- char tokbuf2[TOKBUFSIZE];
- TCHECK2(dat[0], BGP_OPEN_SIZE);
+ ND_TCHECK2(dat[0], BGP_OPEN_SIZE);
memcpy(&bgpo, dat, BGP_OPEN_SIZE);
- printf("\n\t Version %d, ", bgpo.bgpo_version);
- printf("my AS %u, ", ntohs(bgpo.bgpo_myas));
- printf("Holdtime %us, ", ntohs(bgpo.bgpo_holdtime));
- printf("ID %s", getname((u_char *)&bgpo.bgpo_id));
- printf("\n\t Optional parameters, length: %u", bgpo.bgpo_optlen);
+ ND_PRINT((ndo, "\n\t Version %d, ", bgpo.bgpo_version));
+ ND_PRINT((ndo, "my AS %s, ",
+ as_printf(ndo, astostr, sizeof(astostr), ntohs(bgpo.bgpo_myas))));
+ ND_PRINT((ndo, "Holdtime %us, ", ntohs(bgpo.bgpo_holdtime)));
+ ND_PRINT((ndo, "ID %s", getname(ndo, (u_char *)&bgpo.bgpo_id)));
+ ND_PRINT((ndo, "\n\t Optional parameters, length: %u", bgpo.bgpo_optlen));
/* some little sanity checking */
- if (length < bgpo.bgpo_optlen+BGP_OPEN_SIZE)
+ if (length < bgpo.bgpo_optlen+BGP_OPEN_SIZE)
return;
/* ugly! */
i = 0;
while (i < bgpo.bgpo_optlen) {
- TCHECK2(opt[i], BGP_OPT_SIZE);
+ ND_TCHECK2(opt[i], BGP_OPT_SIZE);
memcpy(&bgpopt, &opt[i], BGP_OPT_SIZE);
if (i + 2 + bgpopt.bgpopt_len > bgpo.bgpo_optlen) {
- printf("\n\t Option %d, length: %u", bgpopt.bgpopt_type, bgpopt.bgpopt_len);
+ ND_PRINT((ndo, "\n\t Option %d, length: %u", bgpopt.bgpopt_type, bgpopt.bgpopt_len));
break;
}
- printf("\n\t Option %s (%u), length: %u",
- tok2strbuf(bgp_opt_values,"Unknown",
+ ND_PRINT((ndo, "\n\t Option %s (%u), length: %u",
+ tok2strbuf(bgp_opt_values,"Unknown",
bgpopt.bgpopt_type,
tokbuf, sizeof(tokbuf)),
- bgpopt.bgpopt_type,
- bgpopt.bgpopt_len);
-
- /* now lets decode the options we know*/
- switch(bgpopt.bgpopt_type) {
- case BGP_OPT_CAP:
- cap_type=opt[i+BGP_OPT_SIZE];
- cap_len=opt[i+BGP_OPT_SIZE+1];
- tcap_len=cap_len;
- 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)",
- tok2strbuf(af_values, "Unknown",
- EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+2),
- tokbuf, sizeof(tokbuf)),
- EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+2),
- 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:
- printf("\n\t\tRestart Flags: [%s], Restart Time %us",
- ((opt[i+BGP_OPT_SIZE+2])&0x80) ? "R" : "none",
- EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+2)&0xfff);
- tcap_len-=2;
- cap_offset=4;
- while(tcap_len>=4) {
- printf("\n\t\t AFI %s (%u), SAFI %s (%u), Forwarding state preserved: %s",
- tok2strbuf(af_values,"Unknown",
- EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+cap_offset),
- tokbuf, sizeof(tokbuf)),
- EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+cap_offset),
- 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;
- cap_offset+=4;
- }
- break;
- case BGP_CAPCODE_RR:
- 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) {
- 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:
- printf("\n\t no decoder for option %u",
- bgpopt.bgpopt_type);
- break;
- }
+ bgpopt.bgpopt_type,
+ bgpopt.bgpopt_len));
+ /* now let's decode the options we know*/
+ switch(bgpopt.bgpopt_type) {
+
+ case BGP_OPT_CAP:
+ bgp_capabilities_print(ndo, &opt[i+BGP_OPT_SIZE],
+ bgpopt.bgpopt_len);
+ break;
+
+ case BGP_OPT_AUTH:
+ default:
+ ND_PRINT((ndo, "\n\t no decoder for option %u",
+ bgpopt.bgpopt_type));
+ break;
+ }
i += BGP_OPT_SIZE + bgpopt.bgpopt_len;
}
return;
trunc:
- printf("[|BGP]");
+ ND_PRINT((ndo, "[|BGP]"));
}
static void
-bgp_update_print(const u_char *dat, int length)
+bgp_update_print(netdissect_options *ndo,
+ const u_char *dat, int length)
{
struct bgp bgp;
- struct bgp_attr bgpa;
const u_char *p;
+ int withdrawn_routes_len;
int len;
int i;
char tokbuf[TOKBUFSIZE];
+#ifndef INET6
+ char buf[MAXHOSTNAMELEN + 100];
+ int wpfx;
+#endif
- TCHECK2(dat[0], BGP_SIZE);
+ ND_TCHECK2(dat[0], BGP_SIZE);
+ if (length < BGP_SIZE)
+ goto trunc;
memcpy(&bgp, dat, BGP_SIZE);
p = dat + BGP_SIZE; /*XXX*/
+ length -= BGP_SIZE;
/* Unfeasible routes */
- len = EXTRACT_16BITS(p);
- if (len) {
+ ND_TCHECK2(p[0], 2);
+ if (length < 2)
+ goto trunc;
+ withdrawn_routes_len = EXTRACT_16BITS(p);
+ p += 2;
+ length -= 2;
+ if (withdrawn_routes_len) {
/*
* Without keeping state from the original NLRI message,
* it's not possible to tell if this a v4 or v6 route,
* so only try to decode it if we're not v6 enabled.
*/
+ ND_TCHECK2(p[0], withdrawn_routes_len);
+ if (length < withdrawn_routes_len)
+ goto trunc;
#ifdef INET6
- printf("\n\t Withdrawn routes: %d bytes", len);
+ ND_PRINT((ndo, "\n\t Withdrawn routes: %d bytes", withdrawn_routes_len));
+ p += withdrawn_routes_len;
+ length -= withdrawn_routes_len;
#else
- char buf[MAXHOSTNAMELEN + 100];
- int wpfx;
+ if (withdrawn_routes_len < 2)
+ goto trunc;
+ length -= 2;
+ withdrawn_routes_len -= 2;
- TCHECK2(p[2], len);
- i = 2;
- printf("\n\t Withdrawn routes:");
+ ND_PRINT((ndo, "\n\t Withdrawn routes:"));
- while(i < 2 + len) {
- wpfx = decode_prefix4(&p[i], buf, sizeof(buf));
+ while(withdrawn_routes_len > 0) {
+ wpfx = decode_prefix4(ndo, p, withdrawn_routes_len, buf, sizeof(buf));
if (wpfx == -1) {
- printf("\n\t (illegal prefix length)");
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
break;
} else if (wpfx == -2)
goto trunc;
+ else if (wpfx == -3)
+ goto trunc; /* bytes left, but not enough */
else {
- i += wpfx;
- printf("\n\t %s", buf);
+ ND_PRINT((ndo, "\n\t %s", buf));
+ p += wpfx;
+ length -= wpfx;
+ withdrawn_routes_len -= wpfx;
}
}
#endif
}
- p += 2 + len;
- TCHECK2(p[0], 2);
+ ND_TCHECK2(p[0], 2);
+ if (length < 2)
+ goto trunc;
len = EXTRACT_16BITS(p);
+ p += 2;
+ length -= 2;
- if (len == 0 && length == BGP_UPDATE_MINSIZE) {
- printf("\n\t End-of-Rib Marker (empty NLRI)");
+ if (withdrawn_routes_len == 0 && len == 0 && length == 0) {
+ /* No withdrawn routes, no path attributes, no NLRI */
+ ND_PRINT((ndo, "\n\t End-of-Rib Marker (empty NLRI)"));
return;
}
if (len) {
/* do something more useful!*/
- i = 2;
- while (i < 2 + len) {
- int alen, aoff;
-
- TCHECK2(p[i], sizeof(bgpa));
- memcpy(&bgpa, &p[i], sizeof(bgpa));
- alen = bgp_attr_len(&bgpa);
- aoff = bgp_attr_off(&bgpa);
-
- printf("\n\t %s (%u), length: %u",
+ while (len) {
+ int aflags, atype, alenlen, alen;
+
+ ND_TCHECK2(p[0], 2);
+ if (len < 2)
+ goto trunc;
+ if (length < 2)
+ goto trunc;
+ aflags = *p;
+ atype = *(p + 1);
+ p += 2;
+ len -= 2;
+ length -= 2;
+ alenlen = bgp_attr_lenlen(aflags, p);
+ ND_TCHECK2(p[0], alenlen);
+ if (len < alenlen)
+ goto trunc;
+ if (length < alenlen)
+ goto trunc;
+ alen = bgp_attr_len(aflags, p);
+ p += alenlen;
+ len -= alenlen;
+ length -= alenlen;
+
+ ND_PRINT((ndo, "\n\t %s (%u), length: %u",
tok2strbuf(bgp_attr_values, "Unknown Attribute",
- bgpa.bgpa_type,
+ atype,
tokbuf, sizeof(tokbuf)),
- bgpa.bgpa_type,
- alen);
-
- if (bgpa.bgpa_flags) {
- printf(", Flags [%s%s%s%s",
- bgpa.bgpa_flags & 0x80 ? "O" : "",
- bgpa.bgpa_flags & 0x40 ? "T" : "",
- bgpa.bgpa_flags & 0x20 ? "P" : "",
- bgpa.bgpa_flags & 0x10 ? "E" : "");
- if (bgpa.bgpa_flags & 0xf)
- printf("+%x", bgpa.bgpa_flags & 0xf);
- printf("]: ");
+ atype,
+ alen));
+
+ if (aflags) {
+ ND_PRINT((ndo, ", Flags [%s%s%s%s",
+ aflags & 0x80 ? "O" : "",
+ aflags & 0x40 ? "T" : "",
+ aflags & 0x20 ? "P" : "",
+ aflags & 0x10 ? "E" : ""));
+ if (aflags & 0xf)
+ ND_PRINT((ndo, "+%x", aflags & 0xf));
+ ND_PRINT((ndo, "]: "));
}
- if (!bgp_attr_print(&bgpa, &p[i + aoff], alen))
+ if (len < alen)
goto trunc;
- i += aoff + alen;
+ if (length < alen)
+ goto trunc;
+ if (!bgp_attr_print(ndo, atype, p, alen))
+ goto trunc;
+ p += alen;
+ len -= alen;
+ length -= alen;
}
- }
- p += 2 + len;
+ }
- if (dat + length > p) {
- printf("\n\t Updated routes:");
- while (dat + length > p) {
+ if (length) {
+ /*
+ * XXX - what if they're using the "Advertisement of
+ * Multiple Paths in BGP" feature:
+ *
+ * https://datatracker.ietf.org/doc/draft-ietf-idr-add-paths/
+ *
+ * http://tools.ietf.org/html/draft-ietf-idr-add-paths-06
+ */
+ ND_PRINT((ndo, "\n\t Updated routes:"));
+ while (length) {
char buf[MAXHOSTNAMELEN + 100];
- i = decode_prefix4(p, buf, sizeof(buf));
+ i = decode_prefix4(ndo, p, length, buf, sizeof(buf));
if (i == -1) {
- printf("\n\t (illegal prefix length)");
+ ND_PRINT((ndo, "\n\t (illegal prefix length)"));
break;
} else if (i == -2)
goto trunc;
+ else if (i == -3)
+ goto trunc; /* bytes left, but not enough */
else {
- printf("\n\t %s", buf);
+ ND_PRINT((ndo, "\n\t %s", buf));
p += i;
+ length -= i;
}
}
}
return;
trunc:
- printf("[|BGP]");
+ ND_PRINT((ndo, "[|BGP]"));
}
static void
-bgp_notification_print(const u_char *dat, int length)
+bgp_notification_print(netdissect_options *ndo,
+ const u_char *dat, int length)
{
struct bgp_notification bgpn;
const u_char *tptr;
char tokbuf[TOKBUFSIZE];
char tokbuf2[TOKBUFSIZE];
- TCHECK2(dat[0], BGP_NOTIFICATION_SIZE);
+ ND_TCHECK2(dat[0], BGP_NOTIFICATION_SIZE);
memcpy(&bgpn, dat, BGP_NOTIFICATION_SIZE);
/* some little sanity checking */
if (length<BGP_NOTIFICATION_SIZE)
return;
- printf(", %s (%u)",
+ ND_PRINT((ndo, ", %s (%u)",
tok2strbuf(bgp_notify_major_values, "Unknown Error",
bgpn.bgpn_major, tokbuf, sizeof(tokbuf)),
- bgpn.bgpn_major);
+ bgpn.bgpn_major));
switch (bgpn.bgpn_major) {
case BGP_NOTIFY_MAJOR_MSG:
- printf(", subcode %s (%u)",
+ ND_PRINT((ndo, ", subcode %s (%u)",
tok2strbuf(bgp_notify_minor_msg_values, "Unknown",
bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
- bgpn.bgpn_minor);
+ bgpn.bgpn_minor));
break;
case BGP_NOTIFY_MAJOR_OPEN:
- printf(", subcode %s (%u)",
+ ND_PRINT((ndo, ", subcode %s (%u)",
tok2strbuf(bgp_notify_minor_open_values, "Unknown",
bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
- bgpn.bgpn_minor);
+ bgpn.bgpn_minor));
break;
case BGP_NOTIFY_MAJOR_UPDATE:
- printf(", subcode %s (%u)",
+ ND_PRINT((ndo, ", subcode %s (%u)",
tok2strbuf(bgp_notify_minor_update_values, "Unknown",
bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
- bgpn.bgpn_minor);
+ bgpn.bgpn_minor));
break;
case BGP_NOTIFY_MAJOR_CAP:
- printf(" subcode %s (%u)",
+ ND_PRINT((ndo, " subcode %s (%u)",
tok2strbuf(bgp_notify_minor_cap_values, "Unknown",
bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
- bgpn.bgpn_minor);
+ bgpn.bgpn_minor));
case BGP_NOTIFY_MAJOR_CEASE:
- printf(", subcode %s (%u)",
+ ND_PRINT((ndo, ", subcode %s (%u)",
tok2strbuf(bgp_notify_minor_cease_values, "Unknown",
bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
- bgpn.bgpn_minor);
+ bgpn.bgpn_minor));
/* draft-ietf-idr-cease-subcode-02 mentions optionally 7 bytes
* for the maxprefix subtype, which may contain AFI, SAFI and MAXPREFIXES
*/
if(bgpn.bgpn_minor == BGP_NOTIFY_MINOR_CEASE_MAXPRFX && length >= BGP_NOTIFICATION_SIZE + 7) {
tptr = dat + BGP_NOTIFICATION_SIZE;
- TCHECK2(*tptr, 7);
- printf(", AFI %s (%u), SAFI %s (%u), Max Prefixes: %u",
+ ND_TCHECK2(*tptr, 7);
+ ND_PRINT((ndo, ", AFI %s (%u), SAFI %s (%u), Max Prefixes: %u",
tok2strbuf(af_values, "Unknown",
EXTRACT_16BITS(tptr), tokbuf, sizeof(tokbuf)),
EXTRACT_16BITS(tptr),
tok2strbuf(bgp_safi_values, "Unknown", *(tptr+2),
tokbuf2, sizeof(tokbuf)),
*(tptr+2),
- EXTRACT_32BITS(tptr+3));
+ EXTRACT_32BITS(tptr+3)));
}
break;
default:
return;
trunc:
- printf("[|BGP]");
+ ND_PRINT((ndo, "[|BGP]"));
}
static void
-bgp_route_refresh_print(const u_char *pptr, int len) {
+bgp_route_refresh_print(netdissect_options *ndo,
+ 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);
+ ND_TCHECK2(pptr[0], BGP_ROUTE_REFRESH_SIZE);
/* some little sanity checking */
if (len<BGP_ROUTE_REFRESH_SIZE)
bgp_route_refresh_header = (const struct bgp_route_refresh *)pptr;
- printf("\n\t AFI %s (%u), SAFI %s (%u)",
+ ND_PRINT((ndo, "\n\t AFI %s (%u), SAFI %s (%u)",
tok2strbuf(af_values,"Unknown",
/* this stinks but the compiler pads the structure
* weird */
EXTRACT_16BITS(&bgp_route_refresh_header->afi),
- tokbuf, sizeof(tokbuf)),
+ tokbuf, sizeof(tokbuf)),
EXTRACT_16BITS(&bgp_route_refresh_header->afi),
tok2strbuf(bgp_safi_values,"Unknown",
bgp_route_refresh_header->safi,
tokbuf2, sizeof(tokbuf2)),
- bgp_route_refresh_header->safi);
+ bgp_route_refresh_header->safi));
- if (vflag > 1) {
- TCHECK2(*pptr, len);
- print_unknown_data(pptr,"\n\t ", len);
+ if (ndo->ndo_vflag > 1) {
+ ND_TCHECK2(*pptr, len);
+ print_unknown_data(ndo, pptr, "\n\t ", len);
}
-
+
return;
trunc:
- printf("[|BGP]");
+ ND_PRINT((ndo, "[|BGP]"));
}
static int
-bgp_header_print(const u_char *dat, int length)
+bgp_header_print(netdissect_options *ndo,
+ const u_char *dat, int length)
{
struct bgp bgp;
char tokbuf[TOKBUFSIZE];
- TCHECK2(dat[0], BGP_SIZE);
+ ND_TCHECK2(dat[0], BGP_SIZE);
memcpy(&bgp, dat, BGP_SIZE);
- printf("\n\t%s Message (%u), length: %u",
+ ND_PRINT((ndo, "\n\t%s Message (%u), length: %u",
tok2strbuf(bgp_msg_values, "Unknown", bgp.bgp_type,
tokbuf, sizeof(tokbuf)),
bgp.bgp_type,
- length);
+ length));
switch (bgp.bgp_type) {
case BGP_OPEN:
- bgp_open_print(dat, length);
+ bgp_open_print(ndo, dat, length);
break;
case BGP_UPDATE:
- bgp_update_print(dat, length);
+ bgp_update_print(ndo, dat, length);
break;
case BGP_NOTIFICATION:
- bgp_notification_print(dat, length);
+ bgp_notification_print(ndo, dat, length);
break;
case BGP_KEEPALIVE:
break;
case BGP_ROUTE_REFRESH:
- bgp_route_refresh_print(dat, length);
+ bgp_route_refresh_print(ndo, dat, length);
break;
default:
/* 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);
+ ND_TCHECK2(*dat, length);
+ ND_PRINT((ndo, "\n\t no Message %u decoder", bgp.bgp_type));
+ print_unknown_data(ndo, dat, "\n\t ", length);
break;
}
return 1;
trunc:
- printf("[|BGP]");
+ ND_PRINT((ndo, "[|BGP]"));
return 0;
}
void
-bgp_print(const u_char *dat, int length)
+bgp_print(netdissect_options *ndo,
+ const u_char *dat, int length)
{
const u_char *p;
const u_char *ep;
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
};
struct bgp bgp;
- u_int16_t hlen;
+ uint16_t hlen;
char tokbuf[TOKBUFSIZE];
ep = dat + length;
- if (snapend < dat + length)
- ep = snapend;
+ if (ndo->ndo_snapend < dat + length)
+ ep = ndo->ndo_snapend;
- printf(": BGP, length: %u",length);
+ ND_PRINT((ndo, ": BGP, length: %u", length));
- if (vflag < 1) /* lets be less chatty */
+ if (ndo->ndo_vflag < 1) /* lets be less chatty */
return;
p = dat;
start = p;
while (p < ep) {
- if (!TTEST2(p[0], 1))
+ if (!ND_TTEST2(p[0], 1))
break;
if (p[0] != 0xff) {
p++;
continue;
}
- if (!TTEST2(p[0], sizeof(marker)))
+ if (!ND_TTEST2(p[0], sizeof(marker)))
break;
if (memcmp(p, marker, sizeof(marker)) != 0) {
p++;
}
/* found BGP header */
- TCHECK2(p[0], BGP_SIZE); /*XXX*/
+ ND_TCHECK2(p[0], BGP_SIZE); /*XXX*/
memcpy(&bgp, p, BGP_SIZE);
if (start != p)
- printf(" [|BGP]");
+ ND_PRINT((ndo, " [|BGP]"));
hlen = ntohs(bgp.bgp_len);
if (hlen < BGP_SIZE) {
- printf("\n[|BGP Bogus header length %u < %u]", hlen,
- BGP_SIZE);
+ ND_PRINT((ndo, "\n[|BGP Bogus header length %u < %u]", hlen,
+ BGP_SIZE));
break;
}
- if (TTEST2(p[0], hlen)) {
- if (!bgp_header_print(p, hlen))
+ if (ND_TTEST2(p[0], hlen)) {
+ if (!bgp_header_print(ndo, p, hlen))
return;
p += hlen;
start = p;
} else {
- printf("\n[|BGP %s]",
+ ND_PRINT((ndo, "\n[|BGP %s]",
tok2strbuf(bgp_msg_values,
"Unknown Message Type",
bgp.bgp_type,
- tokbuf, sizeof(tokbuf)));
+ tokbuf, sizeof(tokbuf))));
break;
}
}
return;
trunc:
- printf(" [|BGP]");
+ ND_PRINT((ndo, " [|BGP]"));
}
+
+/*
+ * Local Variables:
+ * c-style: whitesmith
+ * c-basic-offset: 4
+ * End:
+ */
projects / tcpdump / blobdiff