#ifndef lint
static const char rcsid[] _U_ =
- "@(#) $Header: /tcpdump/master/tcpdump/print-eigrp.c,v 1.3 2004-05-01 09:07:01 hannes Exp $";
+ "@(#) $Header: /tcpdump/master/tcpdump/print-eigrp.c,v 1.7 2005-05-06 02:53:26 guy Exp $";
#endif
#ifdef HAVE_CONFIG_H
u_int8_t load;
u_int8_t reserved[2];
u_int8_t plen;
- u_int8_t destination; /* variable length [0-4] bytes encoding */
+ u_int8_t destination; /* variable length [1-4] bytes encoding */
};
+struct eigrp_tlv_ip_ext_t {
+ u_int8_t nexthop[4];
+ u_int8_t origin_router[4];
+ u_int8_t origin_as[4];
+ u_int8_t tag[4];
+ u_int8_t metric[4];
+ u_int8_t reserved[2];
+ u_int8_t proto_id;
+ u_int8_t flags;
+ u_int8_t delay[4];
+ u_int8_t bandwidth[4];
+ u_int8_t mtu[3];
+ u_int8_t hopcount;
+ u_int8_t reliability;
+ u_int8_t load;
+ u_int8_t reserved2[2];
+ u_int8_t plen;
+ u_int8_t destination; /* variable length [1-4] bytes encoding */
+};
+
+struct eigrp_tlv_at_cable_setup_t {
+ u_int8_t cable_start[2];
+ u_int8_t cable_end[2];
+ u_int8_t router_id[4];
+};
+
+struct eigrp_tlv_at_int_t {
+ u_int8_t nexthop[4];
+ u_int8_t delay[4];
+ u_int8_t bandwidth[4];
+ u_int8_t mtu[3];
+ u_int8_t hopcount;
+ u_int8_t reliability;
+ u_int8_t load;
+ u_int8_t reserved[2];
+ u_int8_t cable_start[2];
+ u_int8_t cable_end[2];
+};
+
+struct eigrp_tlv_at_ext_t {
+ u_int8_t nexthop[4];
+ u_int8_t origin_router[4];
+ u_int8_t origin_as[4];
+ u_int8_t tag[4];
+ u_int8_t proto_id;
+ u_int8_t flags;
+ u_int8_t metric[2];
+ u_int8_t delay[4];
+ u_int8_t bandwidth[4];
+ u_int8_t mtu[3];
+ u_int8_t hopcount;
+ u_int8_t reliability;
+ u_int8_t load;
+ u_int8_t reserved2[2];
+ u_int8_t cable_start[2];
+ u_int8_t cable_end[2];
+};
+
+static const struct tok eigrp_ext_proto_id_values[] = {
+ { 0x01, "IGRP" },
+ { 0x02, "EIGRP" },
+ { 0x03, "Static" },
+ { 0x04, "RIP" },
+ { 0x05, "Hello" },
+ { 0x06, "OSPF" },
+ { 0x07, "IS-IS" },
+ { 0x08, "EGP" },
+ { 0x09, "BGP" },
+ { 0x0a, "IDRP" },
+ { 0x0b, "Connected" },
+ { 0, NULL}
+};
+
void
eigrp_print(register const u_char *pptr, register u_int len) {
const struct eigrp_common_header *eigrp_com_header;
const struct eigrp_tlv_header *eigrp_tlv_header;
const u_char *tptr,*tlv_tptr;
- int tlen,eigrp_tlv_len,eigrp_tlv_type,tlv_tlen,byte_length, bit_length;
+ u_int tlen,eigrp_tlv_len,eigrp_tlv_type,tlv_tlen, byte_length, bit_length;
u_int8_t prefix[4];
union {
const struct eigrp_tlv_general_parm_t *eigrp_tlv_general_parm;
const struct eigrp_tlv_sw_version_t *eigrp_tlv_sw_version;
const struct eigrp_tlv_ip_int_t *eigrp_tlv_ip_int;
+ const struct eigrp_tlv_ip_ext_t *eigrp_tlv_ip_ext;
+ const struct eigrp_tlv_at_cable_setup_t *eigrp_tlv_at_cable_setup;
+ const struct eigrp_tlv_at_int_t *eigrp_tlv_at_int;
+ const struct eigrp_tlv_at_ext_t *eigrp_tlv_at_ext;
} tlv_ptr;
tptr=pptr;
while(tlen>0) {
/* did we capture enough for fully decoding the object header ? */
- if (!TTEST2(*tptr, sizeof(struct eigrp_tlv_header)))
- goto trunc;
+ TCHECK2(*tptr, sizeof(struct eigrp_tlv_header));
eigrp_tlv_header = (const struct eigrp_tlv_header *)tptr;
eigrp_tlv_len=EXTRACT_16BITS(&eigrp_tlv_header->length);
eigrp_tlv_type=EXTRACT_16BITS(&eigrp_tlv_header->type);
- if (eigrp_tlv_len == 0 || eigrp_tlv_len > tlen) {
+ if (eigrp_tlv_len < sizeof(struct eigrp_tlv_header) ||
+ eigrp_tlv_len > tlen) {
print_unknown_data(tptr+sizeof(sizeof(struct eigrp_tlv_header)),"\n\t ",tlen);
return;
}
tlv_tlen=eigrp_tlv_len-sizeof(struct eigrp_tlv_header);
/* did we capture enough for fully decoding the object ? */
- if (!TTEST2(*tptr, eigrp_tlv_len))
- goto trunc;
+ TCHECK2(*tptr, eigrp_tlv_len);
switch(eigrp_tlv_type) {
tlv_ptr.eigrp_tlv_ip_int = (const struct eigrp_tlv_ip_int_t *)tlv_tptr;
bit_length = tlv_ptr.eigrp_tlv_ip_int->plen;
- if (bit_length < 0 || bit_length > 32) {
+ if (bit_length > 32) {
printf("\n\t illegal prefix length %u",bit_length);
break;
}
if (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_int->nexthop) == 0)
printf("self");
else
- printf("%s",ipaddr_string(EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_int->nexthop)));
+ printf("%s",ipaddr_string(&tlv_ptr.eigrp_tlv_ip_int->nexthop));
printf("\n\t delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u",
(EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_int->delay)/100),
tlv_ptr.eigrp_tlv_ip_int->load);
break;
+ case EIGRP_TLV_IP_EXT:
+ tlv_ptr.eigrp_tlv_ip_ext = (const struct eigrp_tlv_ip_ext_t *)tlv_tptr;
+
+ bit_length = tlv_ptr.eigrp_tlv_ip_ext->plen;
+ if (bit_length > 32) {
+ printf("\n\t illegal prefix length %u",bit_length);
+ break;
+ }
+ byte_length = (bit_length + 7) / 8; /* variable length encoding */
+ memset(prefix, 0, 4);
+ memcpy(prefix,&tlv_ptr.eigrp_tlv_ip_ext->destination,byte_length);
+
+ printf("\n\t IPv4 prefix: %15s/%u, nexthop: ",
+ ipaddr_string(prefix),
+ bit_length);
+ if (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_ext->nexthop) == 0)
+ printf("self");
+ else
+ printf("%s",ipaddr_string(&tlv_ptr.eigrp_tlv_ip_ext->nexthop));
+
+ printf("\n\t origin-router %s, origin-as %u, origin-proto %s, flags [0x%02x], tag 0x%08x, metric %u",
+ ipaddr_string(tlv_ptr.eigrp_tlv_ip_ext->origin_router),
+ EXTRACT_32BITS(tlv_ptr.eigrp_tlv_ip_ext->origin_as),
+ tok2str(eigrp_ext_proto_id_values,"unknown",tlv_ptr.eigrp_tlv_ip_ext->proto_id),
+ tlv_ptr.eigrp_tlv_ip_ext->flags,
+ EXTRACT_32BITS(tlv_ptr.eigrp_tlv_ip_ext->tag),
+ EXTRACT_32BITS(tlv_ptr.eigrp_tlv_ip_ext->metric));
+
+ printf("\n\t delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u",
+ (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_ext->delay)/100),
+ EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_ext->bandwidth),
+ EXTRACT_24BITS(&tlv_ptr.eigrp_tlv_ip_ext->mtu),
+ tlv_ptr.eigrp_tlv_ip_ext->hopcount,
+ tlv_ptr.eigrp_tlv_ip_ext->reliability,
+ tlv_ptr.eigrp_tlv_ip_ext->load);
+ break;
+
+ case EIGRP_TLV_AT_CABLE_SETUP:
+ tlv_ptr.eigrp_tlv_at_cable_setup = (const struct eigrp_tlv_at_cable_setup_t *)tlv_tptr;
+
+ printf("\n\t Cable-range: %u-%u, Router-ID %u",
+ EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_cable_setup->cable_start),
+ EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_cable_setup->cable_end),
+ EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_cable_setup->router_id));
+ break;
+
+ case EIGRP_TLV_AT_INT:
+ tlv_ptr.eigrp_tlv_at_int = (const struct eigrp_tlv_at_int_t *)tlv_tptr;
+
+ printf("\n\t Cable-Range: %u-%u, nexthop: ",
+ EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_int->cable_start),
+ EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_int->cable_end));
+
+ if (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_int->nexthop) == 0)
+ printf("self");
+ else
+ printf("%u.%u",
+ EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_int->nexthop),
+ EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_int->nexthop[2]));
+
+ printf("\n\t delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u",
+ (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_int->delay)/100),
+ EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_int->bandwidth),
+ EXTRACT_24BITS(&tlv_ptr.eigrp_tlv_at_int->mtu),
+ tlv_ptr.eigrp_tlv_at_int->hopcount,
+ tlv_ptr.eigrp_tlv_at_int->reliability,
+ tlv_ptr.eigrp_tlv_at_int->load);
+ break;
+
+ case EIGRP_TLV_AT_EXT:
+ tlv_ptr.eigrp_tlv_at_ext = (const struct eigrp_tlv_at_ext_t *)tlv_tptr;
+
+ printf("\n\t Cable-Range: %u-%u, nexthop: ",
+ EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_ext->cable_start),
+ EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_ext->cable_end));
+
+ if (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_ext->nexthop) == 0)
+ printf("self");
+ else
+ printf("%u.%u",
+ EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_ext->nexthop),
+ EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_ext->nexthop[2]));
+
+ printf("\n\t origin-router %u, origin-as %u, origin-proto %s, flags [0x%02x], tag 0x%08x, metric %u",
+ EXTRACT_32BITS(tlv_ptr.eigrp_tlv_at_ext->origin_router),
+ EXTRACT_32BITS(tlv_ptr.eigrp_tlv_at_ext->origin_as),
+ tok2str(eigrp_ext_proto_id_values,"unknown",tlv_ptr.eigrp_tlv_at_ext->proto_id),
+ tlv_ptr.eigrp_tlv_at_ext->flags,
+ EXTRACT_32BITS(tlv_ptr.eigrp_tlv_at_ext->tag),
+ EXTRACT_16BITS(tlv_ptr.eigrp_tlv_at_ext->metric));
+
+ printf("\n\t delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u",
+ (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_ext->delay)/100),
+ EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_ext->bandwidth),
+ EXTRACT_24BITS(&tlv_ptr.eigrp_tlv_at_ext->mtu),
+ tlv_ptr.eigrp_tlv_at_ext->hopcount,
+ tlv_ptr.eigrp_tlv_at_ext->reliability,
+ tlv_ptr.eigrp_tlv_at_ext->load);
+ break;
+
/*
* FIXME those are the defined TLVs that lack a decoder
* you are welcome to contribute code ;-)
case EIGRP_TLV_AUTH:
case EIGRP_TLV_SEQ:
case EIGRP_TLV_MCAST_SEQ:
- case EIGRP_TLV_IP_EXT:
- case EIGRP_TLV_AT_INT:
- case EIGRP_TLV_AT_EXT:
- case EIGRP_TLV_AT_CABLE_SETUP:
case EIGRP_TLV_IPX_INT:
case EIGRP_TLV_IPX_EXT:
projects / tcpdump / blobdiff