d7497c1ebf
Helps for applications with many short-lived connections (such as bittorrent) and is correct except for exotic use cases anyway
87 lines
2.2 KiB
C++
87 lines
2.2 KiB
C++
/*
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* packet.h
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*
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* Copyright (c) 2004,2006 Arnout Engelen
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef __PACKET_H
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#define __PACKET_H
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#define _BSD_SOURCE 1
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#include <net/ethernet.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include "nethogs.h"
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enum direction {
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dir_unknown,
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dir_incoming,
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dir_outgoing
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};
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/* To initialise this module, call getLocal with the currently
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* monitored device (e.g. "eth0:1") */
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void getLocal (const char *device, bool tracemode);
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class Packet
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{
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public:
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in6_addr sip6;
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in6_addr dip6;
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in_addr sip;
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in_addr dip;
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unsigned short sport;
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unsigned short dport;
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u_int32_t len;
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timeval time;
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Packet (in_addr m_sip, unsigned short m_sport, in_addr m_dip, unsigned short m_dport, u_int32_t m_len, timeval m_time, direction dir = dir_unknown);
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Packet (in6_addr m_sip, unsigned short m_sport, in6_addr m_dip, unsigned short m_dport, u_int32_t m_len, timeval m_time, direction dir = dir_unknown);
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/* copy constructor */
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Packet (const Packet &old);
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~Packet ()
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{
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if (hashstring != NULL)
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{
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free (hashstring);
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hashstring = NULL;
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}
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}
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/* Packet (const Packet &old_packet); */
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/* copy constructor that turns the packet around */
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Packet * newInverted ();
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bool isOlderThan(timeval t);
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/* is this packet coming from the local host? */
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bool Outgoing ();
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bool match (Packet * other);
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bool matchSource (Packet * other);
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/* returns '1.2.3.4:5-1.2.3.4:6'-style string */
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char * gethashstring();
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private:
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direction dir;
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short int sa_family;
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char * hashstring;
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};
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#endif
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