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106 lines
3.4 KiB
C++
106 lines
3.4 KiB
C++
/*
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*
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* (C) 2013-17 - ntop.org
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (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 Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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#ifndef _GENERIC_HASH_ENTRY_H_
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#define _GENERIC_HASH_ENTRY_H_
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#include "ntop_includes.h"
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/** @class GenericHashEntry
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* @brief Base hash entry class.
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* @details Defined the base hash entry class for ntopng.
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*
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* @ingroup MonitoringData
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*
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*/
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class GenericHashEntry {
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private:
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GenericHashEntry *hash_next; /**< Pointer of next hash entry.*/
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protected:
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u_int32_t num_uses; /* Don't use 16 bits as we might run out of space on large networks with MACs, VLANs etc. */
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bool will_be_purged; /**< Mark this host as candidate for purging. */
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time_t first_seen; /**< Time of first seen. */
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time_t last_seen; /**< Time of last seen. */
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NetworkInterface *iface; /**< Pointer of network interface. */
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virtual bool isIdle(u_int max_idleness);
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public:
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/**
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* @brief A Constructor
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* @details Creating a new GenericHashEntry.
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*
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* @param _iface Network interface pointer for the new hash.
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* @return A new Instance of GenericHashEntry.
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*/
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GenericHashEntry(NetworkInterface *_iface);
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/**
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* @brief A destructor.
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* @details Virtual method.
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*
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* @return Delete the instance.
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*/
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virtual ~GenericHashEntry();
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/**
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* @brief Get the first seen time.
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* @details Inline method.
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*
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* @return Time of first seen.
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*/
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inline time_t get_first_seen() { return(first_seen); };
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/**
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* @brief Get the last seen time.
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* @details Inline method.
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*
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* @return Time of last seen.
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*/
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inline time_t get_last_seen() { return(last_seen); };
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/**
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* @brief Get the next hash entry.
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* @details Inline method.
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*
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* @return Return the next hash entry.
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*/
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inline GenericHashEntry* next() { return(hash_next); };
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/**
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* @brief Set the next hash entry.
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* @details Inline method.
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*
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* @param n Hash entry to set as next hash entry.
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*/
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inline void set_next(GenericHashEntry *n) { hash_next = n; };
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void updateSeen();
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void updateSeen(time_t _last_seen);
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bool equal(GenericHashEntry *b) { return((this == b) ? true : false); };
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inline NetworkInterface* getInterface() { return(iface); };
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virtual bool idle();
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virtual void set_to_purge() { will_be_purged = true; };
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virtual void housekeep() { return; };
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inline bool is_ready_to_be_purged() { return(will_be_purged); };
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inline u_int get_duration() { return((u_int)(1+last_seen-first_seen)); };
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virtual u_int32_t key() { return(0); };
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virtual char* get_string_key(char *buf, u_int buf_len) { buf[0] = '\0'; return(buf); };
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void incUses() { num_uses++; }
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void decUses() { num_uses--; }
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u_int16_t getUses() { return num_uses; }
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};
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#endif /* _GENERIC_HASH_ENTRY_H_ */
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