Line data    Source code

       1             : /*
       2             : Minetest
       3             : Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
       4             : 
       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.
       9             : 
      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.
      14             : 
      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.
      18             : */
      19             : 
      20             : #include "lua_api/l_rollback.h"
      21             : #include "lua_api/l_internal.h"
      22             : #include "common/c_converter.h"
      23             : #include "server.h"
      24             : #include "rollback_interface.h"
      25             : 
      26             : 
      27           0 : void push_RollbackNode(lua_State *L, RollbackNode &node)
      28             : {
      29           0 :         lua_createtable(L, 0, 3);
      30           0 :         lua_pushstring(L, node.name.c_str());
      31           0 :         lua_setfield(L, -2, "name");
      32           0 :         lua_pushnumber(L, node.param1);
      33           0 :         lua_setfield(L, -2, "param1");
      34           0 :         lua_pushnumber(L, node.param2);
      35           0 :         lua_setfield(L, -2, "param2");
      36           0 : }
      37             : 
      38             : // rollback_get_node_actions(pos, range, seconds, limit) -> {{actor, pos, time, oldnode, newnode}, ...}
      39           0 : int ModApiRollback::l_rollback_get_node_actions(lua_State *L)
      40             : {
      41           0 :         v3s16 pos = read_v3s16(L, 1);
      42           0 :         int range = luaL_checknumber(L, 2);
      43           0 :         time_t seconds = (time_t) luaL_checknumber(L, 3);
      44           0 :         int limit = luaL_checknumber(L, 4);
      45           0 :         Server *server = getServer(L);
      46           0 :         IRollbackManager *rollback = server->getRollbackManager();
      47           0 :         if (rollback == NULL) {
      48           0 :                 return 0;
      49             :         }
      50             : 
      51           0 :         std::list<RollbackAction> actions = rollback->getNodeActors(pos, range, seconds, limit);
      52           0 :         std::list<RollbackAction>::iterator iter = actions.begin();
      53             : 
      54           0 :         lua_createtable(L, actions.size(), 0);
      55           0 :         for (unsigned int i = 1; iter != actions.end(); ++iter, ++i) {
      56           0 :                 lua_createtable(L, 0, 5); // Make a table with enough space pre-allocated
      57             : 
      58           0 :                 lua_pushstring(L, iter->actor.c_str());
      59           0 :                 lua_setfield(L, -2, "actor");
      60             : 
      61           0 :                 push_v3s16(L, iter->p);
      62           0 :                 lua_setfield(L, -2, "pos");
      63             : 
      64           0 :                 lua_pushnumber(L, iter->unix_time);
      65           0 :                 lua_setfield(L, -2, "time");
      66             : 
      67           0 :                 push_RollbackNode(L, iter->n_old);
      68           0 :                 lua_setfield(L, -2, "oldnode");
      69             : 
      70           0 :                 push_RollbackNode(L, iter->n_new);
      71           0 :                 lua_setfield(L, -2, "newnode");
      72             : 
      73           0 :                 lua_rawseti(L, -2, i); // Add action table to main table
      74             :         }
      75             : 
      76           0 :         return 1;
      77             : }
      78             : 
      79             : // rollback_revert_actions_by(actor, seconds) -> bool, log messages
      80           0 : int ModApiRollback::l_rollback_revert_actions_by(lua_State *L)
      81             : {
      82           0 :         std::string actor = luaL_checkstring(L, 1);
      83           0 :         int seconds = luaL_checknumber(L, 2);
      84           0 :         Server *server = getServer(L);
      85           0 :         IRollbackManager *rollback = server->getRollbackManager();
      86             : 
      87             :         // If rollback is disabled, tell it's not a success.
      88           0 :         if (rollback == NULL) {
      89           0 :                 lua_pushboolean(L, false);
      90           0 :                 lua_newtable(L);
      91           0 :                 return 2;
      92             :         }
      93           0 :         std::list<RollbackAction> actions = rollback->getRevertActions(actor, seconds);
      94           0 :         std::list<std::string> log;
      95           0 :         bool success = server->rollbackRevertActions(actions, &log);
      96             :         // Push boolean result
      97           0 :         lua_pushboolean(L, success);
      98           0 :         lua_createtable(L, log.size(), 0);
      99           0 :         unsigned long i = 0;
     100           0 :         for(std::list<std::string>::const_iterator iter = log.begin();
     101           0 :                         iter != log.end(); ++i, ++iter) {
     102           0 :                 lua_pushnumber(L, i);
     103           0 :                 lua_pushstring(L, iter->c_str());
     104           0 :                 lua_settable(L, -3);
     105             :         }
     106           0 :         return 2;
     107             : }
     108             : 
     109           0 : void ModApiRollback::Initialize(lua_State *L, int top)
     110             : {
     111           0 :         API_FCT(rollback_get_node_actions);
     112           0 :         API_FCT(rollback_revert_actions_by);
     113           3 : }