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tcpseq.c

/*
 * Copyright (c) 2000 Paul Herman
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $Id: tcpseq.c,v 1.3 2002/01/02 21:05:55 pherman Exp $
 */

#include "tcpstat.h"

struct tcpseq_ha {
      struct in_addr    src;
      struct in_addr    dst;
      u_int port;
};

struct tcpseq_hash {
      struct tcpseq_hash      *next;
      struct tcpseq_ha  addr;
      u_int             seq;
      u_int             ack;
};

struct tcpseq_stats {
      u_int       opened_connections;     /* doesn't include full */
      u_int       closed_connections;     /* doesn't include full */
      u_int       full_connections; /* opened AND closed */
};

struct tcpseq_hash      hash_first;

int tcpseq_addtostats(packet_data *pd) {
      u_char      flags;
      struct tcpseq_ha test_ha;
      struct tcphdr *tp = NULL;
      struct ip *ip;
#ifdef INET6
      int is_ip6 = 0;
      struct ip6_hdr *ip6;

      ip6 = (struct ip6_hdr *) &pd->data.ip6.hdr;
      if (is_ip6_packet(pd))
            tp= &(pd->data.ip6.body.tcphdr);
#endif

      ip = (struct ip *) &pd->data.ip.hdr;
        if (is_ip_packet(pd))
            tp= &(pd->data.ip.body.tcphdr);

      if (tp == NULL) return -1;

      flags = tp->th_flags;
      if (flags & TH_ACK) {
            bzero(&test_ha, sizeof(test_ha));

            }
      return 0;
}

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