mirror of
https://github.com/ntop/ntopng.git
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126 lines
3.9 KiB
C++
126 lines
3.9 KiB
C++
/*
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*
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* (C) 2013-21 - 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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#include "ntop_includes.h"
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/* ***************************************** */
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GenericHashEntry::GenericHashEntry(NetworkInterface *_iface) {
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hash_next = NULL, iface = _iface, first_seen = last_seen = 0;
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num_uses = 0;
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hash_table = NULL;
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hash_entry_state = hash_entry_state_active; /* Default for all but Flow */
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if(iface && iface->getTimeLastPktRcvd() > 0)
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first_seen = last_seen = iface->getTimeLastPktRcvd();
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else
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first_seen = last_seen = time(NULL);
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}
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/* ***************************************** */
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GenericHashEntry::~GenericHashEntry() {
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;
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}
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/* ***************************************** */
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void GenericHashEntry::updateSeen(time_t _last_seen) {
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last_seen = _last_seen;
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if((first_seen == 0) || (first_seen > last_seen))
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first_seen = last_seen;
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}
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/* ***************************************** */
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void GenericHashEntry::updateSeen() {
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updateSeen(iface->getTimeLastPktRcvd());
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}
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/* ***************************************** */
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void GenericHashEntry::set_state(HashEntryState s) {
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if((s < hash_entry_state /* Can't go back */
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|| (s != hash_entry_state + 1 /* Only ahead, one state at time */
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/* Only exception is for flows, which can go from allocated to protocoldetected without
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stepping on not yet detected */
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&& !(hash_entry_state == hash_entry_state_allocated && s == hash_entry_state_flow_protocoldetected)))
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&& (!iface || iface->isRunning()))
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ntop->getTrace()->traceEvent(TRACE_ERROR, "Internal error: invalid state transition %d -> %d",
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hash_entry_state, s);
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else
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hash_entry_state = s;
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};
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/* ***************************************** */
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HashEntryState GenericHashEntry::get_state() const {
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return hash_entry_state;
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};
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/* ***************************************** */
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void GenericHashEntry::periodic_stats_update(const struct timeval *tv) {
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GenericTrafficElement *elem;
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if((elem = dynamic_cast<GenericTrafficElement*>(this)))
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elem->updateStats(tv);
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}
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/* ***************************************** */
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bool GenericHashEntry::idle() const {
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return(get_state() > hash_entry_state_active);
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};
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/* ***************************************** */
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bool GenericHashEntry::is_active_entry_now_idle(u_int max_idleness) const {
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bool ret = (((u_int)(iface->getTimeLastPktRcvd()) > (last_seen + max_idleness)) ? true : false);
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#if 0
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ntop->getTrace()->traceEvent(TRACE_NORMAL, "%s() [lastPkt: %u][last_seen: %u][max_idleness: %u][idle: %s]",
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__FUNCTION__, iface->getTimeLastPktRcvd(), last_seen, max_idleness,
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ret ? "true" : "false");
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#endif
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return(ret);
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}
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/* ***************************************** */
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void GenericHashEntry::deserialize(json_object *o) {
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json_object *obj;
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if(json_object_object_get_ex(o, "seen.first", &obj)) first_seen = json_object_get_int64(obj);
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/* NOTE: do not deserialize the last_seen, as an old timestamp will
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* make this (fresh) entry idle(). */
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}
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/* ***************************************** */
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void GenericHashEntry::getJSONObject(json_object *my_object, DetailsLevel details_level) {
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json_object_object_add(my_object, "seen.first", json_object_new_int64(first_seen));
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json_object_object_add(my_object, "seen.last", json_object_new_int64(last_seen));
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}
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