Omnicleanup: header cleanup, add ModApiUtil shared between game and mainmenu

src/script/cpp_api/s_server.cpp

@@ -0,0 +1,151 @@
+/*
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+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 "cpp_api/s_server.h"
+#include "cpp_api/s_internal.h"
+#include "common/c_converter.h"
+
+bool ScriptApiServer::getAuth(const std::string &playername,
+		std::string *dst_password,
+		std::set<std::string> *dst_privs)
+{
+	SCRIPTAPI_PRECHECKHEADER
+
+	getAuthHandler();
+	lua_getfield(L, -1, "get_auth");
+	if(lua_type(L, -1) != LUA_TFUNCTION)
+		throw LuaError(L, "Authentication handler missing get_auth");
+	lua_pushstring(L, playername.c_str());
+	if(lua_pcall(L, 1, 1, 0))
+		scriptError("error: %s", lua_tostring(L, -1));
+
+	// nil = login not allowed
+	if(lua_isnil(L, -1))
+		return false;
+	luaL_checktype(L, -1, LUA_TTABLE);
+
+	std::string password;
+	bool found = getstringfield(L, -1, "password", password);
+	if(!found)
+		throw LuaError(L, "Authentication handler didn't return password");
+	if(dst_password)
+		*dst_password = password;
+
+	lua_getfield(L, -1, "privileges");
+	if(!lua_istable(L, -1))
+		throw LuaError(L,
+				"Authentication handler didn't return privilege table");
+	if(dst_privs)
+		readPrivileges(-1, *dst_privs);
+	lua_pop(L, 1);
+
+	return true;
+}
+
+void ScriptApiServer::getAuthHandler()
+{
+	lua_State *L = getStack();
+
+	lua_getglobal(L, "minetest");
+	lua_getfield(L, -1, "registered_auth_handler");
+	if(lua_isnil(L, -1)){
+		lua_pop(L, 1);
+		lua_getfield(L, -1, "builtin_auth_handler");
+	}
+	if(lua_type(L, -1) != LUA_TTABLE)
+		throw LuaError(L, "Authentication handler table not valid");
+}
+
+void ScriptApiServer::readPrivileges(int index, std::set<std::string> &result)
+{
+	lua_State *L = getStack();
+
+	result.clear();
+	lua_pushnil(L);
+	if(index < 0)
+		index -= 1;
+	while(lua_next(L, index) != 0){
+		// key at index -2 and value at index -1
+		std::string key = luaL_checkstring(L, -2);
+		bool value = lua_toboolean(L, -1);
+		if(value)
+			result.insert(key);
+		// removes value, keeps key for next iteration
+		lua_pop(L, 1);
+	}
+}
+
+void ScriptApiServer::createAuth(const std::string &playername,
+		const std::string &password)
+{
+	SCRIPTAPI_PRECHECKHEADER
+
+	getAuthHandler();
+	lua_getfield(L, -1, "create_auth");
+	if(lua_type(L, -1) != LUA_TFUNCTION)
+		throw LuaError(L, "Authentication handler missing create_auth");
+	lua_pushstring(L, playername.c_str());
+	lua_pushstring(L, password.c_str());
+	if(lua_pcall(L, 2, 0, 0))
+		scriptError("error: %s", lua_tostring(L, -1));
+}
+
+bool ScriptApiServer::setPassword(const std::string &playername,
+		const std::string &password)
+{
+	SCRIPTAPI_PRECHECKHEADER
+
+	getAuthHandler();
+	lua_getfield(L, -1, "set_password");
+	if(lua_type(L, -1) != LUA_TFUNCTION)
+		throw LuaError(L, "Authentication handler missing set_password");
+	lua_pushstring(L, playername.c_str());
+	lua_pushstring(L, password.c_str());
+	if(lua_pcall(L, 2, 1, 0))
+		scriptError("error: %s", lua_tostring(L, -1));
+	return lua_toboolean(L, -1);
+}
+
+bool ScriptApiServer::on_chat_message(const std::string &name,
+		const std::string &message)
+{
+	SCRIPTAPI_PRECHECKHEADER
+
+	// Get minetest.registered_on_chat_messages
+	lua_getglobal(L, "minetest");
+	lua_getfield(L, -1, "registered_on_chat_messages");
+	// Call callbacks
+	lua_pushstring(L, name.c_str());
+	lua_pushstring(L, message.c_str());
+	script_run_callbacks(L, 2, RUN_CALLBACKS_MODE_OR_SC);
+	bool ate = lua_toboolean(L, -1);
+	return ate;
+}
+
+void ScriptApiServer::on_shutdown()
+{
+	SCRIPTAPI_PRECHECKHEADER
+
+	// Get registered shutdown hooks
+	lua_getglobal(L, "minetest");
+	lua_getfield(L, -1, "registered_on_shutdown");
+	// Call callbacks
+	script_run_callbacks(L, 0, RUN_CALLBACKS_MODE_FIRST);
+}
+