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- /*
- 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
- int error_handler = PUSH_ERROR_HANDLER(L);
- getAuthHandler();
- lua_getfield(L, -1, "get_auth");
- if (lua_type(L, -1) != LUA_TFUNCTION)
- throw LuaError("Authentication handler missing get_auth");
- lua_pushstring(L, playername.c_str());
- PCALL_RES(lua_pcall(L, 1, 1, error_handler));
- lua_remove(L, -2); // Remove auth handler
- lua_remove(L, error_handler);
- // 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("Authentication handler didn't return password");
- if (dst_password)
- *dst_password = password;
- lua_getfield(L, -1, "privileges");
- if (!lua_istable(L, -1))
- throw LuaError("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, "core");
- lua_getfield(L, -1, "registered_auth_handler");
- if (lua_isnil(L, -1)){
- lua_pop(L, 1);
- lua_getfield(L, -1, "builtin_auth_handler");
- }
- setOriginFromTable(-1);
- lua_remove(L, -2); // Remove core
- if (lua_type(L, -1) != LUA_TTABLE)
- throw LuaError("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
- int error_handler = PUSH_ERROR_HANDLER(L);
- getAuthHandler();
- lua_getfield(L, -1, "create_auth");
- lua_remove(L, -2); // Remove auth handler
- if (lua_type(L, -1) != LUA_TFUNCTION)
- throw LuaError("Authentication handler missing create_auth");
- lua_pushstring(L, playername.c_str());
- lua_pushstring(L, password.c_str());
- PCALL_RES(lua_pcall(L, 2, 0, error_handler));
- lua_pop(L, 1); // Pop error handler
- }
- bool ScriptApiServer::setPassword(const std::string &playername,
- const std::string &password)
- {
- SCRIPTAPI_PRECHECKHEADER
- int error_handler = PUSH_ERROR_HANDLER(L);
- getAuthHandler();
- lua_getfield(L, -1, "set_password");
- lua_remove(L, -2); // Remove auth handler
- if (lua_type(L, -1) != LUA_TFUNCTION)
- throw LuaError("Authentication handler missing set_password");
- lua_pushstring(L, playername.c_str());
- lua_pushstring(L, password.c_str());
- PCALL_RES(lua_pcall(L, 2, 1, error_handler));
- lua_remove(L, error_handler);
- return lua_toboolean(L, -1);
- }
- bool ScriptApiServer::on_chat_message(const std::string &name,
- const std::string &message)
- {
- SCRIPTAPI_PRECHECKHEADER
- // Get core.registered_on_chat_messages
- lua_getglobal(L, "core");
- lua_getfield(L, -1, "registered_on_chat_messages");
- // Call callbacks
- lua_pushstring(L, name.c_str());
- lua_pushstring(L, message.c_str());
- runCallbacks(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, "core");
- lua_getfield(L, -1, "registered_on_shutdown");
- // Call callbacks
- runCallbacks(0, RUN_CALLBACKS_MODE_FIRST);
- }
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