92fb73116a
Keeping a sorted multi-set allows faster search by source / source+destination address. Fixes O(n^2) complexity when handling a lot of connections (now it's O(n log n)).
88 lines
2.4 KiB
C++
88 lines
2.4 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,
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*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 "nethogs.h"
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <sys/socket.h>
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enum direction { dir_unknown, dir_incoming, dir_outgoing };
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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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bool getLocal(const char *device, bool tracemode);
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class Packet {
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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,
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unsigned short m_dport, u_int32_t m_len, timeval m_time,
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direction dir = dir_unknown);
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Packet(in6_addr m_sip, unsigned short m_sport, in6_addr m_dip,
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unsigned short m_dport, u_int32_t m_len, timeval m_time,
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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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if (hashstring != NULL) {
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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(const Packet *other) const;
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bool matchSource(const Packet *other) const;
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/* returns a copy with destination information stripped (for comparisons) */
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Packet onlySource() const;
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bool operator< (const Packet& other) const;
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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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