mirror of
https://github.com/ntop/ntopng.git
synced 2026-05-06 12:15:15 +00:00
193 lines
6.6 KiB
C++
193 lines
6.6 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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#include "host_checks_includes.h"
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/* **************************************************** */
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HostChecksLoader::HostChecksLoader() : ChecksLoader() {
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}
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/* **************************************************** */
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HostChecksLoader::~HostChecksLoader() {
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for(std::map<std::string, HostCheck*>::const_iterator it = cb_all.begin(); it != cb_all.end(); ++it)
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delete it->second;
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}
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/* **************************************************** */
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void HostChecksLoader::registerCheck(HostCheck *cb) {
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if(cb_all.find(cb->getName()) != cb_all.end()) {
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ntop->getTrace()->traceEvent(TRACE_ERROR, "Ignoring duplicate host check %s", cb->getName().c_str());
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delete cb;
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} else
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cb_all[cb->getName()] = cb;
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}
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/* **************************************************** */
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void HostChecksLoader::registerChecks() {
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/* TODO: implement dynamic loading */
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HostCheck *fcb;
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if((fcb = new FlowFlood())) registerCheck(fcb);
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if((fcb = new SYNScan())) registerCheck(fcb);
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if((fcb = new SYNFlood())) registerCheck(fcb);
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if((fcb = new DNSServerContacts())) registerCheck(fcb);
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if((fcb = new SMTPServerContacts())) registerCheck(fcb);
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if((fcb = new NTPServerContacts())) registerCheck(fcb);
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if((fcb = new P2PTraffic())) registerCheck(fcb);
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if((fcb = new DNSTraffic())) registerCheck(fcb);
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if((fcb = new FlowAnomaly())) registerCheck(fcb);
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if((fcb = new ScoreAnomaly())) registerCheck(fcb);
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if((fcb = new RemoteConnection())) registerCheck(fcb);
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if((fcb = new DangerousHost())) registerCheck(fcb);
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// printChecks();
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}
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/* **************************************************** */
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void HostChecksLoader::loadConfiguration() {
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json_object *json = NULL, *json_config, *json_config_host;
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struct json_object_iterator it;
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struct json_object_iterator itEnd;
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enum json_tokener_error jerr = json_tokener_success;
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char *value = NULL;
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u_int actual_len = ntop->getRedis()->len(CHECKS_CONFIG); // TODO: check if this is the right place
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if((value = (char *) malloc(actual_len + 1)) == NULL) {
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ntop->getTrace()->traceEvent(TRACE_ERROR, "Unable to allocate memory to deserialize %s", CHECKS_CONFIG);
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goto out;
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}
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if(ntop->getRedis()->get((char*)CHECKS_CONFIG, value, actual_len + 1) != 0) {
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ntop->getTrace()->traceEvent(TRACE_ERROR, "Unable to find configuration %s", CHECKS_CONFIG);
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goto out;
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}
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if((json = json_tokener_parse_verbose(value, &jerr)) == NULL) {
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ntop->getTrace()->traceEvent(TRACE_ERROR, "JSON Parse error [%s] %s [len: %u][strlen: %u]",
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json_tokener_error_desc(jerr), value, actual_len, strlen(value));
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goto out;
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}
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if(!json_object_object_get_ex(json, "config", &json_config)) {
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/* 'config' section inside the JSON */
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ntop->getTrace()->traceEvent(TRACE_ERROR, "'config' not found in JSON");
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goto out;
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}
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if(!json_object_object_get_ex(json_config, "host", &json_config_host)) {
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/* 'host' section inside 'config' JSON */
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ntop->getTrace()->traceEvent(TRACE_ERROR, "'host' not found in 'config' JSON");
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goto out;
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}
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/*
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Iterate over all script configurations
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*/
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it = json_object_iter_begin(json_config_host);
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itEnd = json_object_iter_end(json_config_host);
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while(!json_object_iter_equal(&it, &itEnd)) {
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const char *check_key = json_object_iter_peek_name(&it);
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json_object *check_config = json_object_iter_peek_value(&it);
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json_object *json_script_conf, *json_hook_all;
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/* Periodicities that are currently available for user scripts */
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static std::map<std::string, u_int32_t> hooks = {{"min", 60}, {"5mins", 300}};
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for(std::map<std::string, u_int32_t>::const_iterator it = hooks.begin(); it != hooks.end(); ++it) {
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if(json_object_object_get_ex(check_config, it->first.c_str() /* This is either "min" or "5mins" */, &json_hook_all)) {
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json_object *json_enabled;
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bool enabled;
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if(cb_all.find(check_key) != cb_all.end()) {
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HostCheck *cb = cb_all[check_key];
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if(json_object_object_get_ex(json_hook_all, "enabled", &json_enabled))
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enabled = json_object_get_boolean(json_enabled);
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else
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enabled = false;
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if(enabled) {
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/* Script enabled */
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if(json_object_object_get_ex(json_hook_all, "script_conf", &json_script_conf)) {
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if(cb_all.find(check_key) != cb_all.end()) {
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HostCheck *cb = cb_all[check_key];
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if(cb->loadConfiguration(json_script_conf)) {
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ntop->getTrace()->traceEvent(TRACE_INFO, "Successfully enabled check %s for %s", check_key, it->first.c_str());
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} else {
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ntop->getTrace()->traceEvent(TRACE_ERROR, "Error while loading check %s configuration for %s",
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check_key, it->first.c_str());
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}
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cb->enable(it->second /* This is the periodicity in seconds */);
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cb->scriptEnable();
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}
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}
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} else {
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/* Script disabled */
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cb->scriptDisable();
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}
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} else {
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ntop->getTrace()->traceEvent(TRACE_INFO, "Unable to find host check %s", check_key);
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}
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}
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}
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/* Move to the next element */
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json_object_iter_next(&it);
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} /* while */
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out:
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/* Free the json */
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if(json) json_object_put(json);
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if(value) free(value);
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}
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/* **************************************************** */
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void HostChecksLoader::printChecks() {
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ntop->getTrace()->traceEvent(TRACE_NORMAL, "Available Checks:");
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for(std::map<std::string, HostCheck*>::const_iterator it = cb_all.begin(); it != cb_all.end(); ++it)
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ntop->getTrace()->traceEvent(TRACE_NORMAL, "\t%s", it->first.c_str());
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}
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/* **************************************************** */
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std::list<HostCheck*>* HostChecksLoader::getChecks(NetworkInterface *iface) {
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std::list<HostCheck*> *l = new std::list<HostCheck*>;
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for(std::map<std::string, HostCheck*>::const_iterator it = cb_all.begin(); it != cb_all.end(); ++it) {
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HostCheck *cb = it->second;
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if(cb->isEnabled())
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cb->addCheck(l, iface);
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}
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return(l);
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}
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