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  • only in /asuswrt-rt-n18u-9.0.0.4.380.2695/release/src-rt-6.x.4708/router/samba-3.0.25b/examples/pcap2nbench/
1/*\
2 *  pcap2nbench - Converts libpcap network traces to nbench input
3 *  Copyright (C) 2004  Jim McDonough <jmcd@us.ibm.com>
4 *
5 *  This program is free software; you can redistribute it and/or modify
6 *  it under the terms of the GNU General Public License as published by
7 *  the Free Software Foundation; either version 2 of the License, or
8 *  (at your option) any later version.
9 *
10 *  This program is distributed in the hope that it will be useful,
11 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
12 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 *  GNU General Public License for more details.
14 *
15 *  You should have received a copy of the GNU General Public License
16 *  along with this program; if not, write to the Free Software
17 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 *
19 *  Written by Anthony Liguori <aliguori@us.ibm.com>
20\*/
21
22#include <netinet/in.h>
23
24#include "tcp.hpp"
25
26tcp::tcp(const uint8_t *data, size_t size)
27{
28  if (size < 18) {
29    std::cerr << "Invalid TCP header" << std::endl;
30  }
31
32  memcpy(&src_port, data, 2);
33  src_port = ntohs(src_port);
34  memcpy(&dst_port, data + 2, 2);
35  dst_port = ntohs(dst_port);
36  memcpy(&seq_number, data + 4, 4);
37  seq_number = ntohl(seq_number);
38  memcpy(&ack_number, data + 8, 4);
39  ack_number = ntohl(ack_number);
40  length = ((data[12] & 0xF0) >> 4) * 4;
41  flags = ((data[12] & 0x0F) << 8) | data[13];
42  memcpy(&window_size, data + 14, 2);
43  window_size = ntohs(window_size);
44  memcpy(&checksum, data + 16, 2);
45  checksum = ntohs(checksum);
46}
47
48std::ostream &operator<<(std::ostream &lhs, const tcp &rhs)
49{
50  lhs << "Source Port: " << rhs.src_port << std::endl
51      << "Destination Port: " << rhs.dst_port << std::endl
52      << "Sequence Number: " << rhs.seq_number << std::endl
53      << "Ack Number: " << rhs.ack_number << std::endl
54      << "Length: " << (uint16_t)(rhs.length) << std::endl
55      << "Flags: " << rhs.flags << std::endl
56      << "Window Size: " << rhs.window_size << std::endl
57      << "Checksum: " << rhs.checksum << std::endl;
58
59  return lhs;
60}
61