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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/>.
*/
/**
* @file network_gamelist.cpp This file handles the GameList
* Also, it handles the request to a server for data about the server
*/
#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; ///< Game list of this client.
int _network_game_list_version = 0; ///< Current version of all items in the list.
/**
* Add a new item to the linked gamelist. If the IP and Port match
* return the existing item instead of adding it again
* @param connection_string the address of the to-be added item
* @return a point to the newly added or already existing item
*/
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->version = _network_game_list_version;
if (prev_item == nullptr) {
_network_game_list = item;
} else {
prev_item->next = item;
}
UpdateNetworkGameWindow();
return item;
}
/**
* Remove an item from the gamelist linked list
* @param remove pointer to the item to be removed
*/
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;
}
}
/**
* Remove all servers that have not recently been updated.
* Call this after you received all the servers from the Game Coordinator, so
* the ones that are no longer listed are removed.
*/
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();
}
/**
* Rebuild the GRFConfig's of the servers in the game list as we did
* a rescan and might have found new NewGRFs.
*/
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);
}
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