util-lua.h

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/* Copyright (C) 2014-2022 Open Information Security Foundation
 *
 * You can copy, redistribute or modify this Program under the terms of
 * the GNU General Public License version 2 as published by the Free
 * Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * version 2 along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */
 
/**
 * \file
 *
 * \author Victor Julien <victor@inliniac.net>
 */
 
#ifndef __UTIL_LUA_H__
#define __UTIL_LUA_H__
 
#ifndef HAVE_LUA
 
/* If we don't have Lua, create a typedef for lua_State so the
 * exported Lua functions don't fail the build. */
typedef void lua_State;
 
#else
#include "threadvars.h"
#include "detect.h"
 
typedef struct LuaStreamingBuffer_ {
    const uint8_t *data;
    uint32_t data_len;
    uint8_t flags;
} LuaStreamingBuffer;
 
lua_State *LuaGetState(void);
void LuaReturnState(lua_State *s);
 
/* gets */
 
/** \brief get tv pointer from the lua state */
ThreadVars *LuaStateGetThreadVars(lua_State *luastate);
 
Packet *LuaStateGetPacket(lua_State *luastate);
void *LuaStateGetTX(lua_State *luastate);
uint64_t LuaStateGetTxId(lua_State *luastate);
 
/** \brief get flow pointer from lua state
 *
 *  \retval f flow pointer or NULL if it was not set
 */
Flow *LuaStateGetFlow(lua_State *luastate);
 
PacketAlert *LuaStateGetPacketAlert(lua_State *luastate);
 
Signature *LuaStateGetSignature(lua_State *luastate);
 
/** \brief get file pointer from the lua state */
File *LuaStateGetFile(lua_State *luastate);
 
/** \brief get detect engine thread context pointer from the lua state */
DetectEngineThreadCtx *LuaStateGetDetCtx(lua_State *luastate);
 
LuaStreamingBuffer *LuaStateGetStreamingBuffer(lua_State *luastate);
 
int LuaStateGetDirection(lua_State *luastate);
 
/* sets */
 
void LuaStateSetPacket(lua_State *luastate, Packet *p);
void LuaStateSetTX(lua_State *luastate, void *tx, const uint64_t tx_id);
 
/** \brief set a flow pointer in the lua state
 *
 *  \param f flow pointer
 */
void LuaStateSetFlow(lua_State *luastate, Flow *f);
 
void LuaStateSetPacketAlert(lua_State *luastate, PacketAlert *pa);
 
void LuaStateSetSignature(lua_State *luastate, const Signature *s);
 
void LuaStateSetFile(lua_State *luastate, File *file);
 
void LuaStateSetDetCtx(lua_State *luastate, DetectEngineThreadCtx *det_ctx);
 
void LuaStateSetThreadVars(lua_State *luastate, ThreadVars *tv);
 
void LuaStateSetStreamingBuffer(lua_State *luastate, LuaStreamingBuffer *b);
 
void LuaStateSetDirection(lua_State *luastate, int direction);
 
void LuaPrintStack(lua_State *state);
 
int LuaPushStringBuffer(lua_State *luastate, const uint8_t *input, size_t input_len);
 
int LuaPushInteger(lua_State *luastate, lua_Integer n);
 
#endif /* HAVE_LUA */
 
#endif /* __UTIL_LUA_H__ */