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) 2013-22 - 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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// #define TRACE_ARP_LIFECYCLE 1
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ArpStatsMatrixElement::ArpStatsMatrixElement(NetworkInterface *_iface,
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const u_int8_t _src_mac[6], const u_int8_t _dst_mac[6],
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const u_int32_t _src_ip, const u_int32_t _dst_ip): GenericHashEntry(_iface) {
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memcpy(src_mac, _src_mac, 6), memcpy(dst_mac, _dst_mac, 6);
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src_ip = _src_ip, dst_ip = _dst_ip;
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memset(&stats, 0, sizeof(stats));
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#ifdef TRACE_ARP_LIFECYCLE
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print((char*)"Create ");
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#endif
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}
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ArpStatsMatrixElement::~ArpStatsMatrixElement() {
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#ifdef TRACE_ARP_LIFECYCLE
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print((char*)"Delete ");
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#endif
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}
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/* *************************************** */
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bool ArpStatsMatrixElement::equal(const u_int8_t _src_mac[6],
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const u_int32_t _src_ip, const u_int32_t _dst_ip,
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bool * const src2dst) {
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if((src_ip == _src_ip) && (dst_ip == _dst_ip)) {
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if(memcmp(src_mac, _src_mac, 6) != 0) {
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/* This is a new Mac */
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memcpy((void*)src_mac, _src_mac, 6); /* Overwrite Mac (e.g. DHCP reassignment) */
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memset((void*)&stats, 0, sizeof(stats)); /* Reset all stats */
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}
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*src2dst = true;
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return true;
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} else {
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u_int8_t empty_mac[6] = { 0 };
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if((src_ip == _dst_ip) && (dst_ip == _src_ip)) {
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if(memcmp(dst_mac, _src_mac, 6) == 0)
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; /* Same mac: nothing to do */
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else if (memcmp(dst_mac, empty_mac, 6) == 0)
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memcpy((void*)dst_mac, _src_mac, 6); /* Mac was never set */
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else {
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/* This is a new Mac */
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memcpy((void*)dst_mac, _src_mac, 6); /* Overwrite Mac (e.g. DHCP reassignment) */
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memset((void*)&stats, 0, sizeof(stats)); /* Reset all stats */
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}
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*src2dst = false;
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return true;
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}
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}
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return false;
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}
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/* *************************************** */
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u_int32_t ArpStatsMatrixElement::key() {
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return(src_ip + dst_ip);
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}
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/* *************************************** */
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void ArpStatsMatrixElement::print(char *msg) const {
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char buf1[32], buf1ip[32], buf2[32], buf2ip[32];
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ntop->getTrace()->traceEvent(TRACE_NORMAL, "%s[Source: %s/%s][Dest: %s/%s]",
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msg ? msg : "",
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Utils::formatMac(src_mac, buf1, sizeof(buf1)),
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Utils::intoaV4(src_ip, buf1ip, sizeof(buf1ip)),
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Utils::formatMac(dst_mac, buf2, sizeof(buf2)),
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Utils::intoaV4(dst_ip, buf2ip, sizeof(buf2ip))
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);
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}
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/* *************************************** */
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void ArpStatsMatrixElement::lua(lua_State* vm) {
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char buf[32], buf1[32], key[64];
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lua_newtable(vm);
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lua_push_str_table_entry(vm, "src_mac", Utils::formatMac(src_mac, buf, sizeof(buf)));
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lua_push_str_table_entry(vm, "dst_mac", Utils::formatMac(dst_mac, buf, sizeof(buf)));
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lua_push_uint64_table_entry(vm, "src2dst.requests", stats.src2dst.requests);
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lua_push_uint64_table_entry(vm, "src2dst.replies", stats.src2dst.replies);
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lua_push_uint64_table_entry(vm, "dst2src.requests", stats.dst2src.requests);
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lua_push_uint64_table_entry(vm, "dst2src.replies", stats.dst2src.replies);
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snprintf(key, sizeof(key), "%s-%s",
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Utils::intoaV4(src_ip, buf, sizeof(buf)),
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Utils::intoaV4(dst_ip, buf1, sizeof(buf1)));
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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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