[CSM] Client side modding

* rename GameScripting to ServerScripting
* Make getBuiltinLuaPath static serverside
* Add on_shutdown callback
* Add on_receiving_chat_message & on_sending_chat_message callbacks
* ScriptApiBase: use IGameDef instead of Server
  This permits to share common attribute between client & server
* Enable mod security in client side modding without conditions

src/script/lua_api/CMakeLists.txt

@@ -23,5 +23,6 @@ set(common_SCRIPT_LUA_API_SRCS
 	PARENT_SCOPE)
 
 set(client_SCRIPT_LUA_API_SRCS
+	${CMAKE_CURRENT_SOURCE_DIR}/l_client.cpp
 	${CMAKE_CURRENT_SOURCE_DIR}/l_mainmenu.cpp
 	PARENT_SCOPE)

src/script/lua_api/l_client.cpp

@@ -0,0 +1,33 @@
+/*
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2017 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+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 Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "l_client.h"
+#include "l_internal.h"
+
+int ModApiClient::l_get_current_modname(lua_State *L)
+{
+	lua_rawgeti(L, LUA_REGISTRYINDEX, CUSTOM_RIDX_CURRENT_MOD_NAME);
+	return 1;
+}
+
+void ModApiClient::Initialize(lua_State *L, int top)
+{
+	API_FCT(get_current_modname);
+}

src/script/lua_api/l_client.h

@@ -0,0 +1,36 @@
+/*
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+Copyright (C) 2017 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+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 Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#ifndef L_CLIENT_H_
+#define L_CLIENT_H_
+
+#include "lua_api/l_base.h"
+
+class ModApiClient : public ModApiBase
+{
+private:
+	// get_current_modname()
+	static int l_get_current_modname(lua_State *L);
+
+public:
+	static void Initialize(lua_State *L, int top);
+};
+
+#endif

src/script/lua_api/l_env.cpp

@@ -25,7 +25,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "lua_api/l_vmanip.h"
 #include "common/c_converter.h"
 #include "common/c_content.h"
-#include "scripting_game.h"
+#include "serverscripting.h"
 #include "environment.h"
 #include "server.h"
 #include "nodedef.h"
@@ -49,7 +49,7 @@ struct EnumString ModApiEnvMod::es_ClearObjectsMode[] =
 void LuaABM::trigger(ServerEnvironment *env, v3s16 p, MapNode n,
 		u32 active_object_count, u32 active_object_count_wider)
 {
-	GameScripting *scriptIface = env->getScriptIface();
+	ServerScripting *scriptIface = env->getScriptIface();
 	scriptIface->realityCheck();
 
 	lua_State *L = scriptIface->getStack();
@@ -92,7 +92,7 @@ void LuaABM::trigger(ServerEnvironment *env, v3s16 p, MapNode n,
 
 void LuaLBM::trigger(ServerEnvironment *env, v3s16 p, MapNode n)
 {
-	GameScripting *scriptIface = env->getScriptIface();
+	ServerScripting *scriptIface = env->getScriptIface();
 	scriptIface->realityCheck();
 
 	lua_State *L = scriptIface->getStack();

src/script/lua_api/l_env.h

@@ -242,7 +242,7 @@ public:
 };
 
 struct ScriptCallbackState {
-	GameScripting *script;
+	ServerScripting *script;
 	int callback_ref;
 	int args_ref;
 	unsigned int refcount;

src/script/lua_api/l_object.cpp

@@ -29,7 +29,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "content_sao.h"
 #include "server.h"
 #include "hud.h"
-#include "scripting_game.h"
+#include "serverscripting.h"
 
 struct EnumString es_HudElementType[] =
 {