3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
26 #include <unordered_map>
27 #include "common/helper.h"
28 #include "util/basic_macros.h"
35 #include "irrlichttypes.h"
36 #include "common/c_types.h"
37 #include "common/c_internal.h"
41 #define SCRIPTAPI_LOCK_DEBUG
43 // MUST be an invalid mod name so that mods can't
44 // use that name to bypass security!
45 #define BUILTIN_MOD_NAME "*builtin*"
47 #define PCALL_RES(RES) { \
48 int result_ = (RES); \
50 scriptError(result_, __FUNCTION__); \
54 #define runCallbacks(nargs, mode) \
55 runCallbacksRaw((nargs), (mode), __FUNCTION__)
57 #define setOriginFromTable(index) \
58 setOriginFromTableRaw(index, __FUNCTION__)
60 enum class ScriptingType: u8 {
76 class ServerActiveObject;
77 struct PlayerHPChangeReason;
79 class ScriptApiBase : protected LuaHelper {
81 ScriptApiBase(ScriptingType type);
82 // fake constructor to allow script API classes (e.g ScriptApiEnv) to virtually inherit from this one.
85 FATAL_ERROR("ScriptApiBase created without ScriptingType!");
87 virtual ~ScriptApiBase();
88 DISABLE_CLASS_COPY(ScriptApiBase);
90 // These throw a ModError on failure
91 void loadMod(const std::string &script_path, const std::string &mod_name);
92 void loadScript(const std::string &script_path);
95 void loadModFromMemory(const std::string &mod_name);
98 void runCallbacksRaw(int nargs,
99 RunCallbacksMode mode, const char *fxn);
102 void addObjectReference(ActiveObject *cobj);
103 void removeObjectReference(ActiveObject *cobj);
105 IGameDef *getGameDef() { return m_gamedef; }
107 ScriptingType getType() { return m_type; }
110 Game *getGame() { return m_game; }
113 // IMPORTANT: these cannot be used for any security-related uses, they exist
114 // only to enrich error messages
115 const std::string &getOrigin() { return m_last_run_mod; }
116 void setOriginDirect(const char *origin);
117 void setOriginFromTableRaw(int index, const char *fxn);
119 void clientOpenLibs(lua_State *L);
125 friend class ObjectRef;
126 friend class NodeMetaRef;
127 friend class ModApiBase;
128 friend class ModApiEnvMod;
129 friend class LuaVoxelManip;
132 Subtle edge case with coroutines: If for whatever reason you have a
133 method in a subclass that's called from existing lua_CFunction
134 (any of the l_*.cpp files) then make it static and take the lua_State*
135 as an argument. This is REQUIRED because getStack() will not return the
136 correct state if called inside coroutines.
138 Also note that src/script/common/ is the better place for such helpers.
140 lua_State* getStack()
141 { return m_luastack; }
143 // Checks that stack size is sane
145 // Takes an error from lua_pcall and throws it as a LuaError
146 void scriptError(int result, const char *fxn);
147 // Dumps stack contents for debugging
148 void stackDump(std::ostream &o);
150 void setGameDef(IGameDef* gamedef) { m_gamedef = gamedef; }
152 void setGame(Game *game) { m_game = game; }
155 Environment* getEnv() { return m_environment; }
156 void setEnv(Environment* env) { m_environment = env; }
159 GUIEngine* getGuiEngine() { return m_guiengine; }
160 void setGuiEngine(GUIEngine* guiengine) { m_guiengine = guiengine; }
163 void objectrefGetOrCreate(lua_State *L, ServerActiveObject *cobj);
165 void pushPlayerHPChangeReason(lua_State *L, const PlayerHPChangeReason& reason);
167 std::recursive_mutex m_luastackmutex;
168 std::string m_last_run_mod;
169 bool m_secure = false;
170 #ifdef SCRIPTAPI_LOCK_DEBUG
171 int m_lock_recursion_count{};
172 std::thread::id m_owning_thread;
176 static int luaPanic(lua_State *L);
178 lua_State *m_luastack = nullptr;
180 IGameDef *m_gamedef = nullptr;
182 Game *m_game = nullptr;
184 Environment *m_environment = nullptr;
186 GUIEngine *m_guiengine = nullptr;
188 ScriptingType m_type;