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lua/datasets: factor out into its own file
This is mainly for header sanitization to avoid pulling in detect modules into the Lua sandbox definition. Plus if we namespace modules with names like "suricata.dataset", it probably makes sense to keep those modules in their own files.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,130 @@ | ||
| /* Copyright (C) 2025 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 | ||
| * | ||
| * Dataset API for Lua. | ||
| * | ||
| * local dataset = require("suricata.dataset") | ||
| */ | ||
|
|
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| #include "suricata-common.h" | ||
|
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| #include "util-lua-dataset.h" | ||
|
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| #include "app-layer-protos.h" /* Required by util-lua-common. */ | ||
| #include "util-lua-common.h" | ||
| #include "util-lua.h" | ||
| #include "util-debug.h" | ||
|
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| #include "datasets.h" | ||
|
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| struct LuaDataset { | ||
| Dataset *set; | ||
| }; | ||
|
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| static int LuaDatasetGC(lua_State *luastate) | ||
| { | ||
| SCLogDebug("gc:start"); | ||
| struct LuaDataset *s = (struct LuaDataset *)lua_touserdata(luastate, 1); | ||
| SCLogDebug("deref %s", s->set->name); | ||
| s->set = NULL; | ||
| SCLogDebug("gc:done"); | ||
| return 0; | ||
| } | ||
|
|
||
| static int LuaDatasetGetRef(lua_State *luastate) | ||
| { | ||
| SCLogDebug("get"); | ||
| struct LuaDataset *s = (struct LuaDataset *)lua_touserdata(luastate, 1); | ||
| if (s == NULL) { | ||
| LUA_ERROR("dataset is not initialized"); | ||
| } | ||
|
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| const char *name = lua_tostring(luastate, 2); | ||
| if (name == NULL) { | ||
| LUA_ERROR("null string"); | ||
| } | ||
|
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| Dataset *dataset = DatasetFind(name, DATASET_TYPE_STRING); | ||
| if (dataset == NULL) { | ||
| LUA_ERROR("dataset not found"); | ||
| } | ||
| s->set = dataset; | ||
| return 0; | ||
| } | ||
|
|
||
| static int LuaDatasetAdd(lua_State *luastate) | ||
| { | ||
| SCLogDebug("add:start"); | ||
| struct LuaDataset *s = (struct LuaDataset *)lua_touserdata(luastate, 1); | ||
| if (s == NULL) { | ||
| LUA_ERROR("dataset is not initialized"); | ||
| } | ||
| if (!lua_isstring(luastate, 2)) { | ||
| LUA_ERROR("1st arg is not a string"); | ||
| } | ||
| if (!lua_isnumber(luastate, 3)) { | ||
| LUA_ERROR("2nd arg is not a number"); | ||
| } | ||
|
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| const uint8_t *str = (const uint8_t *)lua_tostring(luastate, 2); | ||
| if (str == NULL) { | ||
| LUA_ERROR("1st arg is not null string"); | ||
| } | ||
|
|
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| uint32_t str_len = lua_tonumber(luastate, 3); | ||
|
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| int r = DatasetAdd(s->set, (const uint8_t *)str, str_len); | ||
| /* return value through luastate, as a luanumber */ | ||
| lua_pushnumber(luastate, (lua_Number)r); | ||
| SCLogDebug("add:end"); | ||
| return 1; | ||
| } | ||
|
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| static int LuaDatasetNew(lua_State *luastate) | ||
| { | ||
| SCLogDebug("new:start"); | ||
| struct LuaDataset *s = (struct LuaDataset *)lua_newuserdata(luastate, sizeof(*s)); | ||
| if (s == NULL) { | ||
| LUA_ERROR("failed to get userdata"); | ||
| } | ||
| luaL_getmetatable(luastate, "dataset::metatable"); | ||
| lua_setmetatable(luastate, -2); | ||
| SCLogDebug("new:done"); | ||
| return 1; | ||
| } | ||
|
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||
| // clang-format off | ||
| static const luaL_Reg datasetlib[] = { | ||
| { "new", LuaDatasetNew }, | ||
| { "get", LuaDatasetGetRef }, | ||
| { "add", LuaDatasetAdd }, | ||
| { "__gc", LuaDatasetGC }, | ||
| { NULL, NULL } | ||
| }; | ||
| // clang-format on | ||
|
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| void LuaLoadDatasetLib(lua_State *luastate) | ||
| { | ||
| luaL_newmetatable(luastate, "dataset::metatable"); | ||
| lua_pushvalue(luastate, -1); | ||
| lua_setfield(luastate, -2, "__index"); | ||
| luaL_setfuncs(luastate, datasetlib, 0); | ||
| luaL_newlib(luastate, datasetlib); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| /* Copyright (C) 2025 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. | ||
| */ | ||
|
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| #ifndef SURICATA_UTIL_LUA_DATASET_H | ||
| #define SURICATA_UTIL_LUA_DATASET_H | ||
|
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| #include "lua.h" | ||
|
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| void LuaLoadDatasetLib(lua_State *luastate); | ||
|
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| #endif /* SURICATA_UTIL_LUA_DATASET_H */ |
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