mirror of
https://github.com/ntop/ntopng.git
synced 2026-05-23 03:50:20 +00:00
94 lines
2.6 KiB
C++
94 lines
2.6 KiB
C++
/*
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*
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* (C) 2013-24 - 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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void Fingerprint::update(const char *_fprint, const char *app_name,
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bool is_malicious) {
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std::string fprint(_fprint);
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m.lock(__FILE__, __LINE__);
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std::map<std::string, FingerprintStats>::iterator it = fp.find(fprint);
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if (it == fp.end()) {
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FingerprintStats s;
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prune();
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s.app_name = std::string(app_name ? app_name : ""), s.num_uses = 1,
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s.is_malicious = is_malicious;
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fp[fprint] = s;
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} else {
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it->second.num_uses++,
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it->second.app_name = std::string(
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app_name ? app_name : "", it->second.is_malicious = is_malicious);
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}
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m.unlock(__FILE__, __LINE__);
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}
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/* *************************************** */
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void Fingerprint::lua(const char *key, lua_State *vm) {
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lua_newtable(vm);
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m.lock(__FILE__, __LINE__);
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for (std::map<std::string, FingerprintStats>::const_iterator it = fp.begin();
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it != fp.end(); ++it) {
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lua_newtable(vm);
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lua_push_str_table_entry(vm, "app_name", it->second.app_name.c_str());
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lua_push_int32_table_entry(vm, "num_uses", it->second.num_uses);
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lua_push_bool_table_entry(vm, "is_malicious", it->second.is_malicious);
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lua_pushstring(vm, it->first.c_str());
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lua_insert(vm, -2);
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lua_settable(vm, -3);
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}
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m.unlock(__FILE__, __LINE__);
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lua_pushstring(vm, key);
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lua_insert(vm, -2);
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lua_settable(vm, -3);
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}
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/* *************************************** */
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void Fingerprint::prune() {
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if (fp.size() > MAX_NUM_FINGERPRINT) {
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std::map<std::string, FingerprintStats>::iterator it = fp.begin();
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std::vector<std::string> dropper;
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while (it != fp.end()) {
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if (it->second.num_uses < 3) dropper.push_back(it->first);
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++it;
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} /* while */
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for (std::vector<std::string>::iterator it1 = dropper.begin();
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it1 != dropper.end(); ++it1)
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fp.erase(*it1);
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}
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}
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