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traffic.c

traffic.c
Posted Nov 1, 1999
Authored by Andrae Muys | Site uq.edu.au

Simple parser for tcpdump output. Gives the fields Time, Src Addr, Src Port, Dst Addr, Dst Port, Proto, and Len.

tags | tool, sniffer
SHA-256 | 358ea57b1f788c4274924e853c12cfe7f2a9c9a5ef65a9f468968aea83992abb

traffic.c

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/* Simple parser for tcpdump output. */
/* (c) Andrae Muys 1998 andrae@humbug.org.au */
/*
To use type
tcpdump -i eth0 -n -x -s 60 ip host 130.102.60.6 | traffic > logfile
*/

#include <stdio.h>
#include <string.h>

char *protoN[] = {
"???", "ICMP", "???", "GtoG", "???", "???", "TCP", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "UDP", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???", "???", "???", "???", "???", "???",
"???", "???", "???", "???", "???" };



int main ()
{
char src[30], dst[30];
char time[30];
char junk[120];
char *srcPort, *dstPort;
int proto = 0;
int len;
long total;

printf ("Time, Src Addr, Src Port, Dst Addr, Dst Port, Proto, Len\n");

while (1) {
scanf ("%s %s %*s %s", time, src, dst);
gets (junk);
scanf ("%*x %x %*x %*x %x ", &len, &proto);
proto &= 0x00FF;
gets (junk);
gets (junk);
gets (junk);
srcPort = strrchr (src, '.');
*srcPort = '\0'; srcPort++;
srcPort[strlen(srcPort) - 1] = '\0';
dstPort = strrchr (dst, '.');
*dstPort = '\0'; dstPort++;
dstPort[strlen(dstPort) - 1] = '\0';
printf ("%s,%s,%s,%s,%s,%s,%d\n", time, src, srcPort, dst,
dstPort, protoN[proto], len);
}
return 0;
}
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