network_gamelist.cpp

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/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD 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 General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "../stdafx.h"
#include "../debug.h"
#include "../window_func.h"
#include "network_internal.h"
#include "network_udp.h"
#include "network_gamelist.h"
#include <atomic>
 
#include "../safeguards.h"
 
NetworkGameList *_network_game_list = nullptr; 
int _network_game_list_version = 0; 
 
NetworkGameList *NetworkGameListAddItem(const std::string &connection_string)
{
  NetworkGameList *item, *prev_item;
 
  /* Parse the connection string to ensure the default port is there. */
  const std::string resolved_connection_string = ServerAddress::Parse(connection_string, NETWORK_DEFAULT_PORT).connection_string;
 
  prev_item = nullptr;
  for (item = _network_game_list; item != nullptr; item = item->next) {
    if (item->connection_string == resolved_connection_string) return item;
    prev_item = item;
  }
 
  item = new NetworkGameList(resolved_connection_string);
  item->info.gamescript_version = -1;
  item->version = _network_game_list_version;
 
  if (prev_item == nullptr) {
    _network_game_list = item;
  } else {
    prev_item->next = item;
  }
 
  UpdateNetworkGameWindow();
 
  return item;
}
 
void NetworkGameListRemoveItem(NetworkGameList *remove)
{
  NetworkGameList *prev_item = nullptr;
  for (NetworkGameList *item = _network_game_list; item != nullptr; item = item->next) {
    if (remove == item) {
      if (prev_item == nullptr) {
        _network_game_list = remove->next;
      } else {
        prev_item->next = remove->next;
      }
 
      /* Remove GRFConfig information */
      ClearGRFConfigList(&remove->info.grfconfig);
      delete remove;
 
      NetworkRebuildHostList();
      UpdateNetworkGameWindow();
      return;
    }
    prev_item = item;
  }
}
 
void NetworkGameListRemoveExpired()
{
  NetworkGameList **prev_item = &_network_game_list;
 
  for (NetworkGameList *item = _network_game_list; item != nullptr;) {
    if (!item->manually && item->version < _network_game_list_version) {
      NetworkGameList *remove = item;
      item = item->next;
      *prev_item = item;
 
      /* Remove GRFConfig information */
      ClearGRFConfigList(&remove->info.grfconfig);
      delete remove;
    } else {
      prev_item = &item->next;
      item = item->next;
    }
  }
 
  UpdateNetworkGameWindow();
}
 
void NetworkAfterNewGRFScan()
{
  for (NetworkGameList *item = _network_game_list; item != nullptr; item = item->next) {
    /* Reset compatibility state */
    item->info.compatible = item->info.version_compatible;
 
    for (GRFConfig *c = item->info.grfconfig; c != nullptr; c = c->next) {
      assert(HasBit(c->flags, GCF_COPY));
 
      const GRFConfig *f = FindGRFConfig(c->ident.grfid, FGCM_EXACT, &c->ident.md5sum);
      if (f == nullptr) {
        /* Don't know the GRF (anymore), so mark game incompatible. */
        c->status = GCS_NOT_FOUND;
 
        /* If we miss a file, we're obviously incompatible. */
        item->info.compatible = false;
      } else {
        c->filename = f->filename;
        c->name = f->name;
        c->info = f->info;
        c->status = GCS_UNKNOWN;
      }
    }
  }
 
  InvalidateWindowClassesData(WC_NETWORK_WINDOW);
}