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suricata/src/util-lua-common.c

113 lines
2.9 KiB
C

/* Copyright (C) 2014-2021 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>
*
* Common function for Lua Output
*/
#include "suricata-common.h"
#include "threads.h"
#include "threadvars.h"
#include "output.h"
#include "util-conf.h"
#include "lua.h"
#include "util-lua.h"
#include "util-lua-common.h"
int LuaCallbackError(lua_State *luastate, const char *msg)
{
lua_pushnil(luastate);
lua_pushstring(luastate, msg);
return 2;
}
const char *LuaGetStringArgument(lua_State *luastate, int idx)
{
/* get argument */
if (!lua_isstring(luastate, idx))
return NULL;
const char *str = lua_tostring(luastate, idx);
if (str == NULL)
return NULL;
if (strlen(str) == 0)
return NULL;
return str;
}
void LuaPushTableKeyValueInt(lua_State *luastate, const char *key, int value)
{
lua_pushstring(luastate, key);
lua_pushnumber(luastate, value);
lua_settable(luastate, -3);
}
void LuaPushTableKeyValueBoolean(lua_State *luastate, const char *key, bool value)
{
lua_pushstring(luastate, key);
lua_pushboolean(luastate, value);
lua_settable(luastate, -3);
}
/** \brief Push a key plus string value to the stack
*
* If value is NULL, string "(null")" will be put on the stack.
*/
void LuaPushTableKeyValueString(lua_State *luastate, const char *key, const char *value)
{
lua_pushstring(luastate, key);
lua_pushstring(luastate, value ? value : "(null)");
lua_settable(luastate, -3);
}
/** \brief Push a key plus string value with length to the stack.
*/
void LuaPushTableKeyValueLString(
lua_State *luastate, const char *key, const char *value, size_t len)
{
lua_pushstring(luastate, key);
lua_pushlstring(luastate, value, len);
lua_settable(luastate, -3);
}
void LuaPushTableKeyValueArray(
lua_State *luastate, const char *key, const uint8_t *value, size_t len)
{
lua_pushstring(luastate, key);
LuaPushStringBuffer(luastate, value, len);
lua_settable(luastate, -3);
}
int LuaStateNeedProto(lua_State *luastate, AppProto alproto)
{
AppProto flow_alproto = 0;
Flow *flow = LuaStateGetFlow(luastate);
if (flow == NULL)
return LuaCallbackError(luastate, "internal error: no flow");
flow_alproto = flow->alproto;
return (alproto == flow_alproto);
}