mirror of https://github.com/dirtbags/fluffy.git
64 lines
1.4 KiB
C
64 lines
1.4 KiB
C
#include <stdio.h>
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#include <sysexits.h>
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#include <string.h>
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#include "pcap.h"
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int
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main(int argc, char *argv[])
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{
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int i;
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struct pcap_pkthdr hdr[2];
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char frame[2][MAXFRAME];
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int cur = 0;
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struct pcap_file out;
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memset(&hdr, 0, sizeof(hdr));
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memset(frame, 0, 2 * MAXFRAME);
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if (-1 == pcap_open_out(&out, stdout)) {
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perror("writing header");
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return EX_IOERR;
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}
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i = 1;
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do {
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char *fn = argv[i];
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FILE *f;
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struct pcap_file p;
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if ((! fn) || (0 == strcmp("-", fn))) {
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f = stdin;
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} else {
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f = fopen(fn, "rb");
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if (NULL == f) {
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perror(fn);
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return EX_IOERR;
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}
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}
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if (-1 == pcap_open_in(&p, f)) {
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fprintf(stderr, "%s: unable to process\n", fn);
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return EX_IOERR;
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}
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while (1) {
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if (-1 == pcap_read_pkthdr(&p, &hdr[cur])) break;
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if (1 != fread(frame[cur], hdr[cur].caplen, 1, p.f)) break;
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if ((0 == memcmp(&hdr[0], &hdr[1], sizeof(hdr[0]))) &&
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(0 == memcmp(frame[0], frame[1], hdr[cur].caplen))) {
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/* Skip this duplicate */
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} else {
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if (-1 == pcap_write_pkthdr(&out, &hdr[cur])) break;
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if (1 != fwrite(frame[cur], hdr[cur].caplen, 1, out.f)) break;
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}
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cur = (1 - cur);
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}
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pcap_close(&p);
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i += 1;
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} while (i < argc);
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return 0;
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}
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