mirror of
https://github.com/ntop/ntopng.git
synced 2026-05-23 03:50:20 +00:00
99 lines
3.1 KiB
C++
99 lines
3.1 KiB
C++
/*
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*
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* (C) 2019-24 - 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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SyslogLuaEngine::SyslogLuaEngine(NetworkInterface *iface) : LuaEngine() {
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if(trace_new_delete) ntop->getTrace()->traceEvent(TRACE_NORMAL, "[new] %s", __FILE__);
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initialized = false;
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snprintf(script_path, sizeof(script_path), "%s/%s",
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ntop->getPrefs()->get_scripts_dir(), SYSLOG_SCRIPT_PATH);
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ntop->fixPath(script_path);
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if (load_script(script_path, lua_engine_mode_callback, iface) < 0) {
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ntop->getTrace()->traceEvent(TRACE_ERROR, "Failure loading %s",
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script_path);
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return;
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}
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/* Execute the script so that the "setup" function will be exposed */
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if (lua_pcall(L, 0, 0, 0)) {
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ntop->getTrace()->traceEvent(TRACE_WARNING, "Script failure[%s] [%s]",
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script_path, lua_tostring(L, -1));
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return;
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}
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initialized = true;
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/* Calling setup() */
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lua_getglobal(L, "setup");
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if (lua_isfunction(L, -1)) pcall(0 /* no argument */, 0);
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}
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/* ****************************************** */
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SyslogLuaEngine::~SyslogLuaEngine() {
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if (!initialized) return;
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/* Calling teardown() */
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lua_getglobal(L, "teardown");
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if (lua_isfunction(L, -1)) pcall(0 /* no argument */, 0);
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}
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/* ****************************************** */
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bool SyslogLuaEngine::pcall(int num_args, int num_results) {
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if (!initialized) {
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/* Remove possibly pushed values on the lua stack to avoid overflow */
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lua_settop(L, 0);
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return false;
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}
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if (lua_pcall(L, num_args, num_results, 0)) {
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ntop->getTrace()->traceEvent(TRACE_WARNING, "Script failure [%s]",
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lua_tostring(L, -1));
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return false;
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}
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return true;
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}
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/* **************************************************** */
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void SyslogLuaEngine::handleEvent(const char *producer, const char *message,
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const char *host, int priority) {
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lua_State *L = getState();
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//ntop->getTrace()->traceEvent(TRACE_WARNING, "Producer = %s Host = %s Message = %s",
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// producer ? producer : "", host ? host : "", message ? message : "");
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lua_getglobal(L, SYSLOG_SCRIPT_CALLBACK_EVENT);
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lua_pushstring(L, producer ? producer : "");
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lua_pushstring(L, message ? message : "");
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lua_pushstring(L, host ? host : "");
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lua_pushinteger(L, priority);
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pcall(4 /* num args */, 0);
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}
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