mirror of
https://github.com/falcosecurity/falco.git
synced 2026-03-18 18:58:41 +00:00
5d245f6569
First minimally working version with plugins + rule loading/rule evaluation: - In the falco engine, hold rulesets for plugins in a map from plugin id to falco ruleset. - Add new methods "add_plugin_filter" to rules.cpp/falco_engine that adds a filter for a given source and compiled filter. This isn't strictly necessary, as the plugin filterchecks are added when a plugin is registered, but it more cleanly separates filters for syscalls and plugins. - When loading rules, if the source is not syscall or k8s_audit, assume it's a plugin filter and call add_plugin_filter. - In process_sinsp_event, if the event type is PLUGINEVENT_E, use the plugins rulesets map instead of m_sinsp_rules, looking up the appropriate source from the plugin. This doesn't handle extractor plugins yet and I only tested the very minimal happy path but I did get rules loaded and working.
70 lines
1.9 KiB
C++
70 lines
1.9 KiB
C++
/*
|
|
Copyright (C) 2020 The Falco Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <string>
|
|
#include <map>
|
|
#include <memory>
|
|
|
|
#include "sinsp.h"
|
|
|
|
extern "C"
|
|
{
|
|
#include "lua.h"
|
|
#include "lualib.h"
|
|
#include "lauxlib.h"
|
|
}
|
|
|
|
#include "json_evt.h"
|
|
#include "falco_engine.h"
|
|
|
|
class sinsp_evt_formatter;
|
|
|
|
class falco_formats
|
|
{
|
|
public:
|
|
static void init(sinsp *inspector,
|
|
falco_engine *engine,
|
|
lua_State *ls,
|
|
bool json_output,
|
|
bool json_include_output_property);
|
|
|
|
static void create_sinsp_formatter(lua_State *ls, const std::string &format);
|
|
static void delete_sinsp_formatter(lua_State *ls);
|
|
|
|
// formatter = falco.formatter(format_string)
|
|
static int lua_formatter(lua_State *ls);
|
|
|
|
// falco.free_formatter(formatter)
|
|
static int lua_free_formatter(lua_State *ls);
|
|
|
|
static void format_sinsp_event(const gen_event *evt, const std::string &format,
|
|
std::string &line, std::string &json_line, std::string &sformat);
|
|
|
|
static string format_event(const gen_event *evt, const std::string &rule, const std::string &source,
|
|
const std::string &level, const std::string &format);
|
|
|
|
static map<string, string> resolve_tokens(const gen_event *evt, const std::string &source,
|
|
const std::string &format);
|
|
|
|
static sinsp *s_inspector;
|
|
static falco_engine *s_engine;
|
|
static std::unique_ptr<sinsp_evt_formatter_cache> s_formatters;
|
|
static bool s_json_output;
|
|
static bool s_json_include_output_property;
|
|
};
|