/*
* specification:
*
- * http://www.rhyshaden.com/eigrp.htm
+ * https://web.archive.org/web/20190722221712/https://www.rhyshaden.com/eigrp.htm
* RFC 7868
*/
#include "extract.h"
#include "addrtoname.h"
-static const char tstr[] = " [|eigrp]";
struct eigrp_common_header {
nd_uint8_t version;
/*
* Sanity checking of the header.
*/
- if (EXTRACT_U_1(eigrp_com_header->version) != EIGRP_VERSION) {
- ND_PRINT("EIGRP version %u packet not supported",EXTRACT_U_1(eigrp_com_header->version));
+ if (GET_U_1(eigrp_com_header->version) != EIGRP_VERSION) {
+ ND_PRINT("EIGRP version %u packet not supported",
+ GET_U_1(eigrp_com_header->version));
return;
}
/* in non-verbose mode just lets print the basic Message Type*/
if (ndo->ndo_vflag < 1) {
ND_PRINT("EIGRP %s, length: %u",
- tok2str(eigrp_opcode_values, "unknown (%u)",EXTRACT_U_1(eigrp_com_header->opcode)),
+ tok2str(eigrp_opcode_values, "unknown (%u)",GET_U_1(eigrp_com_header->opcode)),
len);
return;
}
if (len < sizeof(struct eigrp_common_header)) {
ND_PRINT("EIGRP %s, length: %u (too short, < %u)",
- tok2str(eigrp_opcode_values, "unknown (%u)",EXTRACT_U_1(eigrp_com_header->opcode)),
+ tok2str(eigrp_opcode_values, "unknown (%u)",GET_U_1(eigrp_com_header->opcode)),
len, (u_int) sizeof(struct eigrp_common_header));
return;
}
/* FIXME print other header info */
ND_PRINT("\n\tEIGRP v%u, opcode: %s (%u), chksum: 0x%04x, Flags: [%s]\n\tseq: 0x%08x, ack: 0x%08x, AS: %u, length: %u",
- EXTRACT_U_1(eigrp_com_header->version),
- tok2str(eigrp_opcode_values, "unknown, type: %u",EXTRACT_U_1(eigrp_com_header->opcode)),
- EXTRACT_U_1(eigrp_com_header->opcode),
- EXTRACT_BE_U_2(eigrp_com_header->checksum),
+ GET_U_1(eigrp_com_header->version),
+ tok2str(eigrp_opcode_values, "unknown, type: %u",GET_U_1(eigrp_com_header->opcode)),
+ GET_U_1(eigrp_com_header->opcode),
+ GET_BE_U_2(eigrp_com_header->checksum),
tok2str(eigrp_common_header_flag_values,
"none",
- EXTRACT_BE_U_4(eigrp_com_header->flags)),
- EXTRACT_BE_U_4(eigrp_com_header->seq),
- EXTRACT_BE_U_4(eigrp_com_header->ack),
- EXTRACT_BE_U_4(eigrp_com_header->asn),
+ GET_BE_U_4(eigrp_com_header->flags)),
+ GET_BE_U_4(eigrp_com_header->seq),
+ GET_BE_U_4(eigrp_com_header->ack),
+ GET_BE_U_4(eigrp_com_header->asn),
tlen);
tptr+=sizeof(struct eigrp_common_header);
ND_TCHECK_LEN(tptr, sizeof(struct eigrp_tlv_header));
eigrp_tlv_header = (const struct eigrp_tlv_header *)tptr;
- eigrp_tlv_len=EXTRACT_BE_U_2(eigrp_tlv_header->length);
- eigrp_tlv_type=EXTRACT_BE_U_2(eigrp_tlv_header->type);
+ eigrp_tlv_len=GET_BE_U_2(eigrp_tlv_header->length);
+ eigrp_tlv_type=GET_BE_U_2(eigrp_tlv_header->type);
if (eigrp_tlv_len < sizeof(struct eigrp_tlv_header) ||
}
ND_PRINT("\n\t holdtime: %us, k1 %u, k2 %u, k3 %u, k4 %u, k5 %u",
- EXTRACT_BE_U_2(tlv_ptr.eigrp_tlv_general_parm->holdtime),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_general_parm->k1),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_general_parm->k2),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_general_parm->k3),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_general_parm->k4),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_general_parm->k5));
+ GET_BE_U_2(tlv_ptr.eigrp_tlv_general_parm->holdtime),
+ GET_U_1(tlv_ptr.eigrp_tlv_general_parm->k1),
+ GET_U_1(tlv_ptr.eigrp_tlv_general_parm->k2),
+ GET_U_1(tlv_ptr.eigrp_tlv_general_parm->k3),
+ GET_U_1(tlv_ptr.eigrp_tlv_general_parm->k4),
+ GET_U_1(tlv_ptr.eigrp_tlv_general_parm->k5));
break;
case EIGRP_TLV_SW_VERSION:
}
ND_PRINT("\n\t IOS version: %u.%u, EIGRP version %u.%u",
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_sw_version->ios_major),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_sw_version->ios_minor),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_sw_version->eigrp_major),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_sw_version->eigrp_minor));
+ GET_U_1(tlv_ptr.eigrp_tlv_sw_version->ios_major),
+ GET_U_1(tlv_ptr.eigrp_tlv_sw_version->ios_minor),
+ GET_U_1(tlv_ptr.eigrp_tlv_sw_version->eigrp_major),
+ GET_U_1(tlv_ptr.eigrp_tlv_sw_version->eigrp_minor));
break;
case EIGRP_TLV_IP_INT:
break;
}
- bit_length = EXTRACT_U_1(tlv_ptr.eigrp_tlv_ip_int->plen);
+ bit_length = GET_U_1(tlv_ptr.eigrp_tlv_ip_int->plen);
if (bit_length > 32) {
ND_PRINT("\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_int->destination, byte_length);
+ GET_CPY_BYTES(prefix, tlv_ptr.eigrp_tlv_ip_int->destination, byte_length);
ND_PRINT("\n\t IPv4 prefix: %15s/%u, nexthop: ",
- ipaddr_string(ndo, prefix),
+ ipaddr_string(ndo, prefix), /* local buffer, not packet data; don't use GET_IPADDR_STRING() */
bit_length);
- if (EXTRACT_BE_U_4(tlv_ptr.eigrp_tlv_ip_int->nexthop) == 0)
+ if (GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_int->nexthop) == 0)
ND_PRINT("self");
else
ND_PRINT("%s",
- ipaddr_string(ndo, tlv_ptr.eigrp_tlv_ip_int->nexthop));
+ GET_IPADDR_STRING(tlv_ptr.eigrp_tlv_ip_int->nexthop));
ND_PRINT("\n\t delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u",
- (EXTRACT_BE_U_4(tlv_ptr.eigrp_tlv_ip_int->delay)/100),
- EXTRACT_BE_U_4(tlv_ptr.eigrp_tlv_ip_int->bandwidth),
- EXTRACT_BE_U_3(tlv_ptr.eigrp_tlv_ip_int->mtu),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_ip_int->hopcount),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_ip_int->reliability),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_ip_int->load));
+ (GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_int->delay)/100),
+ GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_int->bandwidth),
+ GET_BE_U_3(tlv_ptr.eigrp_tlv_ip_int->mtu),
+ GET_U_1(tlv_ptr.eigrp_tlv_ip_int->hopcount),
+ GET_U_1(tlv_ptr.eigrp_tlv_ip_int->reliability),
+ GET_U_1(tlv_ptr.eigrp_tlv_ip_int->load));
break;
case EIGRP_TLV_IP_EXT:
break;
}
- bit_length = EXTRACT_U_1(tlv_ptr.eigrp_tlv_ip_ext->plen);
+ bit_length = GET_U_1(tlv_ptr.eigrp_tlv_ip_ext->plen);
if (bit_length > 32) {
ND_PRINT("\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);
+ GET_CPY_BYTES(prefix, tlv_ptr.eigrp_tlv_ip_ext->destination, byte_length);
ND_PRINT("\n\t IPv4 prefix: %15s/%u, nexthop: ",
- ipaddr_string(ndo, prefix),
+ ipaddr_string(ndo, prefix), /* local buffer, not packet data; don't use GET_IPADDR_STRING() */
bit_length);
- if (EXTRACT_BE_U_4(tlv_ptr.eigrp_tlv_ip_ext->nexthop) == 0)
+ if (GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_ext->nexthop) == 0)
ND_PRINT("self");
else
ND_PRINT("%s",
- ipaddr_string(ndo, tlv_ptr.eigrp_tlv_ip_ext->nexthop));
+ GET_IPADDR_STRING(tlv_ptr.eigrp_tlv_ip_ext->nexthop));
ND_PRINT("\n\t origin-router %s, origin-as %u, origin-proto %s, flags [0x%02x], tag 0x%08x, metric %u",
- ipaddr_string(ndo, tlv_ptr.eigrp_tlv_ip_ext->origin_router),
- EXTRACT_BE_U_4(tlv_ptr.eigrp_tlv_ip_ext->origin_as),
- tok2str(eigrp_ext_proto_id_values,"unknown",EXTRACT_U_1(tlv_ptr.eigrp_tlv_ip_ext->proto_id)),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_ip_ext->flags),
- EXTRACT_BE_U_4(tlv_ptr.eigrp_tlv_ip_ext->tag),
- EXTRACT_BE_U_4(tlv_ptr.eigrp_tlv_ip_ext->metric));
+ GET_IPADDR_STRING(tlv_ptr.eigrp_tlv_ip_ext->origin_router),
+ GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_ext->origin_as),
+ tok2str(eigrp_ext_proto_id_values,"unknown",GET_U_1(tlv_ptr.eigrp_tlv_ip_ext->proto_id)),
+ GET_U_1(tlv_ptr.eigrp_tlv_ip_ext->flags),
+ GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_ext->tag),
+ GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_ext->metric));
ND_PRINT("\n\t delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u",
- (EXTRACT_BE_U_4(tlv_ptr.eigrp_tlv_ip_ext->delay)/100),
- EXTRACT_BE_U_4(tlv_ptr.eigrp_tlv_ip_ext->bandwidth),
- EXTRACT_BE_U_3(tlv_ptr.eigrp_tlv_ip_ext->mtu),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_ip_ext->hopcount),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_ip_ext->reliability),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_ip_ext->load));
+ (GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_ext->delay)/100),
+ GET_BE_U_4(tlv_ptr.eigrp_tlv_ip_ext->bandwidth),
+ GET_BE_U_3(tlv_ptr.eigrp_tlv_ip_ext->mtu),
+ GET_U_1(tlv_ptr.eigrp_tlv_ip_ext->hopcount),
+ GET_U_1(tlv_ptr.eigrp_tlv_ip_ext->reliability),
+ GET_U_1(tlv_ptr.eigrp_tlv_ip_ext->load));
break;
case EIGRP_TLV_AT_CABLE_SETUP:
}
ND_PRINT("\n\t Cable-range: %u-%u, Router-ID %u",
- EXTRACT_BE_U_2(tlv_ptr.eigrp_tlv_at_cable_setup->cable_start),
- EXTRACT_BE_U_2(tlv_ptr.eigrp_tlv_at_cable_setup->cable_end),
- EXTRACT_BE_U_4(tlv_ptr.eigrp_tlv_at_cable_setup->router_id));
+ GET_BE_U_2(tlv_ptr.eigrp_tlv_at_cable_setup->cable_start),
+ GET_BE_U_2(tlv_ptr.eigrp_tlv_at_cable_setup->cable_end),
+ GET_BE_U_4(tlv_ptr.eigrp_tlv_at_cable_setup->router_id));
break;
case EIGRP_TLV_AT_INT:
}
ND_PRINT("\n\t Cable-Range: %u-%u, nexthop: ",
- EXTRACT_BE_U_2(tlv_ptr.eigrp_tlv_at_int->cable_start),
- EXTRACT_BE_U_2(tlv_ptr.eigrp_tlv_at_int->cable_end));
+ GET_BE_U_2(tlv_ptr.eigrp_tlv_at_int->cable_start),
+ GET_BE_U_2(tlv_ptr.eigrp_tlv_at_int->cable_end));
- if (EXTRACT_BE_U_4(tlv_ptr.eigrp_tlv_at_int->nexthop) == 0)
+ if (GET_BE_U_4(tlv_ptr.eigrp_tlv_at_int->nexthop) == 0)
ND_PRINT("self");
else
ND_PRINT("%u.%u",
- EXTRACT_BE_U_2(&tlv_ptr.eigrp_tlv_at_int->nexthop[0]),
- EXTRACT_BE_U_2(&tlv_ptr.eigrp_tlv_at_int->nexthop[2]));
+ GET_BE_U_2(&tlv_ptr.eigrp_tlv_at_int->nexthop[0]),
+ GET_BE_U_2(&tlv_ptr.eigrp_tlv_at_int->nexthop[2]));
ND_PRINT("\n\t delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u",
- (EXTRACT_BE_U_4(tlv_ptr.eigrp_tlv_at_int->delay)/100),
- EXTRACT_BE_U_4(tlv_ptr.eigrp_tlv_at_int->bandwidth),
- EXTRACT_BE_U_3(tlv_ptr.eigrp_tlv_at_int->mtu),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_at_int->hopcount),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_at_int->reliability),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_at_int->load));
+ (GET_BE_U_4(tlv_ptr.eigrp_tlv_at_int->delay)/100),
+ GET_BE_U_4(tlv_ptr.eigrp_tlv_at_int->bandwidth),
+ GET_BE_U_3(tlv_ptr.eigrp_tlv_at_int->mtu),
+ GET_U_1(tlv_ptr.eigrp_tlv_at_int->hopcount),
+ GET_U_1(tlv_ptr.eigrp_tlv_at_int->reliability),
+ GET_U_1(tlv_ptr.eigrp_tlv_at_int->load));
break;
case EIGRP_TLV_AT_EXT:
}
ND_PRINT("\n\t Cable-Range: %u-%u, nexthop: ",
- EXTRACT_BE_U_2(tlv_ptr.eigrp_tlv_at_ext->cable_start),
- EXTRACT_BE_U_2(tlv_ptr.eigrp_tlv_at_ext->cable_end));
+ GET_BE_U_2(tlv_ptr.eigrp_tlv_at_ext->cable_start),
+ GET_BE_U_2(tlv_ptr.eigrp_tlv_at_ext->cable_end));
- if (EXTRACT_BE_U_4(tlv_ptr.eigrp_tlv_at_ext->nexthop) == 0)
+ if (GET_BE_U_4(tlv_ptr.eigrp_tlv_at_ext->nexthop) == 0)
ND_PRINT("self");
else
ND_PRINT("%u.%u",
- EXTRACT_BE_U_2(&tlv_ptr.eigrp_tlv_at_ext->nexthop[0]),
- EXTRACT_BE_U_2(&tlv_ptr.eigrp_tlv_at_ext->nexthop[2]));
+ GET_BE_U_2(&tlv_ptr.eigrp_tlv_at_ext->nexthop[0]),
+ GET_BE_U_2(&tlv_ptr.eigrp_tlv_at_ext->nexthop[2]));
ND_PRINT("\n\t origin-router %u, origin-as %u, origin-proto %s, flags [0x%02x], tag 0x%08x, metric %u",
- EXTRACT_BE_U_4(tlv_ptr.eigrp_tlv_at_ext->origin_router),
- EXTRACT_BE_U_4(tlv_ptr.eigrp_tlv_at_ext->origin_as),
- tok2str(eigrp_ext_proto_id_values,"unknown",EXTRACT_U_1(tlv_ptr.eigrp_tlv_at_ext->proto_id)),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_at_ext->flags),
- EXTRACT_BE_U_4(tlv_ptr.eigrp_tlv_at_ext->tag),
- EXTRACT_BE_U_2(tlv_ptr.eigrp_tlv_at_ext->metric));
+ GET_BE_U_4(tlv_ptr.eigrp_tlv_at_ext->origin_router),
+ GET_BE_U_4(tlv_ptr.eigrp_tlv_at_ext->origin_as),
+ tok2str(eigrp_ext_proto_id_values,"unknown",GET_U_1(tlv_ptr.eigrp_tlv_at_ext->proto_id)),
+ GET_U_1(tlv_ptr.eigrp_tlv_at_ext->flags),
+ GET_BE_U_4(tlv_ptr.eigrp_tlv_at_ext->tag),
+ GET_BE_U_2(tlv_ptr.eigrp_tlv_at_ext->metric));
ND_PRINT("\n\t delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u",
- (EXTRACT_BE_U_4(tlv_ptr.eigrp_tlv_at_ext->delay)/100),
- EXTRACT_BE_U_4(tlv_ptr.eigrp_tlv_at_ext->bandwidth),
- EXTRACT_BE_U_3(tlv_ptr.eigrp_tlv_at_ext->mtu),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_at_ext->hopcount),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_at_ext->reliability),
- EXTRACT_U_1(tlv_ptr.eigrp_tlv_at_ext->load));
+ (GET_BE_U_4(tlv_ptr.eigrp_tlv_at_ext->delay)/100),
+ GET_BE_U_4(tlv_ptr.eigrp_tlv_at_ext->bandwidth),
+ GET_BE_U_3(tlv_ptr.eigrp_tlv_at_ext->mtu),
+ GET_U_1(tlv_ptr.eigrp_tlv_at_ext->hopcount),
+ GET_U_1(tlv_ptr.eigrp_tlv_at_ext->reliability),
+ GET_U_1(tlv_ptr.eigrp_tlv_at_ext->load));
break;
/*
}
return;
trunc:
- ND_PRINT("%s", tstr);
+ nd_print_trunc(ndo);
}
projects / tcpdump / blobdiff