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/* @(#) $Header: /home/ax25-cvs/ax25-apps/listen/icmpdump.c,v 1.2 2001/09/12 13:18:44 terry Exp $ */
/* ICMP header tracing
* Copyright 1991 Phil Karn, KA9Q
*/
#include <stdio.h>
#include "listen.h"
#define ICMP_DEST_UNREACH 3
#define ICMP_REDIRECT 5
#define ICMP_TIME_EXCEED 11
#define ICMP_PARAM_PROB 12
#define ICMP_ECHO 8
#define ICMP_ECHO_REPLY 0
#define ICMP_INFO_RQST 15
#define ICMP_INFO_REPLY 16
#define ICMP_TIMESTAMP 13
#define ICMP_TIME_REPLY 14
#define ICMP_QUENCH 4
#define ICMPLEN 8
/* Dump an ICMP header */
void icmp_dump(unsigned char *data, int length, int hexdump)
{
int type;
int code;
int pointer;
unsigned char *address;
int id, seq;
type = data[0];
code = data[1];
pointer = data[4];
address = data + 4;
id = get16(data + 4);
seq = get16(data + 6);
data += ICMPLEN;
length -= ICMPLEN;
lprintf(T_IPHDR, "ICMP: type ");
switch (type) {
case ICMP_DEST_UNREACH:
lprintf(T_ERROR, "Unreachable ");
lprintf(T_IPHDR, "code ");
switch (code) {
case 0:
lprintf(T_ERROR, "Network");
break;
case 1:
lprintf(T_ERROR, "Host");
break;
case 2:
lprintf(T_ERROR, "Protocol");
break;
case 3:
lprintf(T_ERROR, "Port");
break;
case 4:
lprintf(T_ERROR, "Fragmentation");
break;
case 5:
lprintf(T_ERROR, "Source route");
break;
case 6:
lprintf(T_ERROR, "Dest net unknown");
break;
case 7:
lprintf(T_ERROR, "Dest host unknown");
break;
case 8:
lprintf(T_ERROR, "Source host isolated");
break;
case 9:
lprintf(T_ERROR, "Net prohibited");
break;
case 10:
lprintf(T_ERROR, "Host prohibited");
break;
case 11:
lprintf(T_ERROR, "Net TOS");
break;
case 12:
lprintf(T_ERROR, "Host TOS");
break;
case 13:
lprintf(T_ERROR, "Administratively Prohibited");
break;
default:
lprintf(T_ERROR, "%d", code);
break;
}
lprintf(T_IPHDR, "\nReturned ");
ip_dump(data, length, hexdump);
break;
case ICMP_REDIRECT:
lprintf(T_ERROR, "Redirect ");
lprintf(T_IPHDR, "code ");
switch (code) {
case 0:
lprintf(T_ERROR, "Network");
break;
case 1:
lprintf(T_ERROR, "Host");
break;
case 2:
lprintf(T_ERROR, "TOS & Network");
break;
case 3:
lprintf(T_ERROR, "TOS & Host");
break;
default:
lprintf(T_ERROR, "%d", code);
break;
}
lprintf(T_IPHDR, " new gateway %d.%d.%d.%d",
address[0], address[1], address[2], address[3]);
lprintf(T_IPHDR, "\nReturned ");
ip_dump(data, length, hexdump);
break;
case ICMP_TIME_EXCEED:
lprintf(T_ERROR, "Time Exceeded code ");
lprintf(T_ERROR, "Time Exceeded ");
lprintf(T_IPHDR, "code ");
switch (code) {
case 0:
lprintf(T_ERROR, "Time-to-live");
break;
case 1:
lprintf(T_ERROR, "Fragment reassembly");
break;
default:
lprintf(T_ERROR, "%d", code);
break;
}
lprintf(T_IPHDR, "\nReturned ");
ip_dump(data, length, hexdump);
break;
case ICMP_PARAM_PROB:
lprintf(T_ERROR, "Parameter Problem pointer %d", pointer);
lprintf(T_IPHDR, "\nReturned ");
ip_dump(data, length, hexdump);
break;
case ICMP_QUENCH:
lprintf(T_ERROR, "Source Quench");
lprintf(T_IPHDR, "\nReturned ");
ip_dump(data, length, hexdump);
break;
case ICMP_ECHO:
lprintf(T_IPHDR, "Echo Request id %d seq %d\n", id, seq);
data_dump(data, length, hexdump);
break;
case ICMP_ECHO_REPLY:
lprintf(T_IPHDR, "Echo Reply id %d seq %d\n", id, seq);
data_dump(data, length, hexdump);
break;
case ICMP_INFO_RQST:
lprintf(T_IPHDR, "Information Request id %d seq %d\n", id,
seq);
data_dump(data, length, hexdump);
break;
case ICMP_INFO_REPLY:
lprintf(T_IPHDR, "Information Reply id %d seq %d\n", id,
seq);
data_dump(data, length, hexdump);
break;
case ICMP_TIMESTAMP:
lprintf(T_IPHDR, "Timestamp Request id %d seq %d\n", id,
seq);
data_dump(data, length, hexdump);
break;
case ICMP_TIME_REPLY:
lprintf(T_IPHDR, "Timestamp Reply id %d seq %d\n", id,
seq);
data_dump(data, length, hexdump);
break;
default:
lprintf(T_IPHDR, "%d\n", type);
data_dump(data, length, hexdump);
break;
}
}
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