//

// main.c

// pcaptest

//

// Created by zc on 12-1-24.

// Copyright 2012Äê __MyCompanyName__. All rights reserved.

//

#include <stdio.h>

#include <arpa/inet.h>

#include "pcap.h"

#define PCAP_FILE "ping.pcap"

#define MAX_ETH_FRAME 1514

#define ERROR_FILE_OPEN_FAILED -1

#define ERROR_MEM_ALLOC_FAILED -2

#define ERROR_PCAP_PARSE_FAILED -3

int main (int argc, const char * argv[])

{

printf("sizeof:int %lu,unsigned int %lu,char %lu,unsigned char %lu,short:%lu,unsigned short:%lu\n",

sizeof(int),sizeof(unsigned int),sizeof(char),sizeof(unsigned char),sizeof(short),sizeof(unsigned short));

pcap_file_header pfh;

pcap_header ph;

int count=0;

void * buff = NULL;

int readSize=0;

int ret = 0;

FILE *fp = fopen(PCAP_FILE, "rw");

if (fp==NULL) {

fprintf(stderr, "Open file %s error.",PCAP_FILE);

ret = ERROR_FILE_OPEN_FAILED;

goto ERROR;

}

fread(&pfh, sizeof(pcap_file_header), 1, fp);

prinfPcapFileHeader(&pfh);

//fseek(fp, 0, sizeof(pcap_file_header));

buff = (void *)malloc(MAX_ETH_FRAME);

for (count=1; ; count++) {

memset(buff,0,MAX_ETH_FRAME);

//read pcap header to get a packet

//get only a pcap head count .

readSize=fread(&ph, sizeof(pcap_header), 1, fp);

if (readSize<=0) {

break;

}

printfPcapHeader(&ph);

if (buff==NULL) {

fprintf(stderr, "malloc memory failed.\n");

ret = ERROR_MEM_ALLOC_FAILED;

goto ERROR;

}

//get a packet contents.

//read ph.capture_len bytes.

readSize=fread(buff,1,ph.capture_len, fp);

if (readSize != ph.capture_len) {

free(buff);

fprintf(stderr, "pcap file parse error.\n");

ret = ERROR_PCAP_PARSE_FAILED;

goto ERROR;

}

printPcap(buff, ph.capture_len);

printf("===count:%d,readSize:%d===\n",count,readSize);

if (feof(fp) || readSize <=0 ) {

break;

}

}

ERROR:

//free

if (buff) {

free(buff);

buff=NULL;

}

if (fp) {

fclose(fp);

fp=NULL;

}

return ret;

}