mirror of
https://github.com/ntop/ntopng.git
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86 lines
2.2 KiB
C++
86 lines
2.2 KiB
C++
/*
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*
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* (C) 2013-18 - 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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*x
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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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AutonomousSystemHash::AutonomousSystemHash(NetworkInterface *_iface, u_int _num_hashes,
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u_int _max_hash_size) : GenericHash(_iface, _num_hashes, _max_hash_size) {
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;
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}
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/* ************************************ */
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AutonomousSystem* AutonomousSystemHash::get(IpAddress *ipa) {
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u_int32_t asn;
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ntop->getGeolocation()->getAS(ipa, &asn, NULL /* Don't care about AS name here */);
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u_int32_t hash = asn;
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hash %= num_hashes;
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if(table[hash] == NULL) {
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return(NULL);
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} else {
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AutonomousSystem *head;
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locks[hash]->lock(__FILE__, __LINE__);
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head = (AutonomousSystem*)table[hash];
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while(head != NULL) {
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if((!head->idle()) && head->equal(asn))
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break;
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else
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head = (AutonomousSystem*)head->next();
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}
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locks[hash]->unlock(__FILE__, __LINE__);
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return(head);
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}
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}
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/* ************************************ */
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#ifdef AS_DEBUG
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static bool print_ases(GenericHashEntry *_as, void *user_data) {
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AutonomousSystem *as = (AutonomousSystem*)_as;
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ntop->getTrace()->traceEvent(TRACE_NORMAL, "Autonomous System [asn: %u] [asname: %s] [num_uses: %u]",
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as->get_asn(),
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as->get_asname(),
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as->getNumHosts());
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return(false); /* false = keep on walking */
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}
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/* ************************************ */
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void AutonomousSystemHash::printHash() {
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disablePurge();
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walk(print_ases, NULL);
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enablePurge();
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}
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#endif
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