iw4x-client/iw4/Components/ServerList.cpp

#include "..\STDInclude.hpp"

namespace Components
{
	unsigned int ServerList::CurrentServer = 0;
	ServerList::Container ServerList::RefreshContainer;
	std::vector<ServerList::ServerInfo> ServerList::OnlineList;

	int ServerList::GetServerCount()
	{
		return ServerList::OnlineList.size();
	}

	const char* ServerList::GetServerText(int index, int column)
	{
		if ((unsigned int)index >= ServerList::OnlineList.size()) return "";

		ServerList::ServerInfo* Server = &ServerList::OnlineList[index];

		switch (column)
		{
			case Column::Password:
			{
				return (Server->Password ? "X" : "");
			}

			case Column::Hostname:
			{
				return Server->Hostname.data();
			}

			case Column::Mapname:
			{
				return  Game::UI_LocalizeMapName(Server->Mapname.data());
			}

			case Column::Players:
			{
				return Utils::VA("%i (%i)", Server->Clients, Server->MaxClients);
			}

			case Column::Gametype:
			{
				if (Server->Mod != "")
				{
					return (Server->Mod.data() + 5);
				}

				return Game::UI_LocalizeGameType(Server->Gametype.data());
			}

			case Column::Ping:
			{
				return Utils::VA("%i", Server->Ping);
			}
		}

		return "";
	}

	void ServerList::SelectServer(int index)
	{
		ServerList::CurrentServer = (unsigned int)index;
	}

	void ServerList::Refresh()
	{
		ServerList::OnlineList.clear();

		ServerList::RefreshContainer.Mutex.lock();
		ServerList::RefreshContainer.Servers.clear();
		ServerList::RefreshContainer.Mutex.unlock();

		int masterPort = Dvar::Var("masterPort").Get<int>();
		const char* masterServerName = Dvar::Var("masterServerName").Get<const char*>();

		ServerList::RefreshContainer.Host = Network::Address(Utils::VA("%s:%u", masterServerName, masterPort));

		ServerList::RefreshContainer.AwaitingList = true;

		Network::Send(ServerList::RefreshContainer.Host, "getservers IW4 145 full empty");
	}

	void ServerList::Insert(Network::Address address, Utils::InfoString info)
	{
		// Do not enter any new servers, if we are awaiting a new list from the master
		if (ServerList::RefreshContainer.AwaitingList) return;

		ServerList::RefreshContainer.Mutex.lock();

		for (auto i = ServerList::RefreshContainer.Servers.begin(); i != ServerList::RefreshContainer.Servers.end(); i++)
		{
			// Our desired server
			if (i->Target == address)
			{
				// Challenge did not match
				if (i->Challenge != info.Get("challenge"))
				{
					// Shall we remove the server from the queue?
					// Better not, it might send a second response with the correct challenge.
					// This might happen when users refresh twice (or more often) in a short period of time
					break;
				}

				// TODO: Implement deeper check like version and game
				ServerInfo server;
				server.Hostname = info.Get("hostname");
				server.Mapname = info.Get("mapname");
				server.Gametype = info.Get("gametype");
				server.Mod = info.Get("fs_game");
				server.MatchType = atoi(info.Get("matchtype").data());
				server.Clients = atoi(info.Get("clients").data());
				server.MaxClients = atoi(info.Get("sv_maxclients").data());
				server.Password = 0; // No info yet
				server.Ping = (Game::Com_Milliseconds() - i->SendTime);
				server.Addr = address;

				ServerList::OnlineList.push_back(server);

				ServerList::RefreshContainer.Servers.erase(i);

				break;
			}
		}

		ServerList::RefreshContainer.Mutex.unlock();
	}

	ServerList::ServerList()
	{
		ServerList::OnlineList.clear();

		Network::Handle("getServersResponse", [] (Network::Address address, std::string data)
		{
			if (!ServerList::RefreshContainer.AwaitingList) return; // Only parse if we are awaiting a list
			if (ServerList::RefreshContainer.Host != address) return; // Only parse from host we sent to

			ServerList::RefreshContainer.AwaitingList = false;

			ServerList::RefreshContainer.Mutex.lock();

			// Is this safe? If server ip/port is encoded as '\', it might fail
			// TODO: Rather parse six bytes and skip the seventh
			auto servers = Utils::Explode(data, '\\');

			if (servers.size())
			{
				if (servers[servers.size() - 1] == "EOT")
				{
					Logger::Print("We got an invalid response from the master. Trying to parse it anyways...\n");
				}

				for (unsigned int i = 0; i < servers.size() - 1; i++)
				{
					const char* server = servers[i].data();

					DWORD ip = *(DWORD*)server;
					uint16_t port = *(uint16_t*)(server + 4);

					Network::Address serverAddr = address;
					serverAddr.SetIP(ip);
					serverAddr.SetPort(port);
					serverAddr.Get()->type = Game::NA_IP;

					ServerList::Container::ServerContainer container;
					container.SendTime = Game::Com_Milliseconds();
					container.Challenge = Utils::VA("%d", container.SendTime);
					container.Sent = true;
					container.Target = serverAddr;

					ServerList::RefreshContainer.Servers.push_back(container);
					
					Network::Send(container.Target, Utils::VA("getinfo %s\n", container.Challenge.data()));
				}
			}

			ServerList::RefreshContainer.Mutex.unlock();
		});

		// Set default masterServerName + port and save it 
		Utils::Hook::Set<const char*>(0x60AD92, "localhost");
		Utils::Hook::Set<BYTE>(0x60AD90, Game::dvar_flag::DVAR_FLAG_SAVED); // masterServerName
		Utils::Hook::Set<BYTE>(0x60ADC6, Game::dvar_flag::DVAR_FLAG_SAVED); // masterPort

		// Add server list feeder
		UIFeeder::Add(2.0f, ServerList::GetServerCount, ServerList::GetServerText, ServerList::SelectServer);

		// Add required UIScripts
		UIScript::Add("RefreshServers", ServerList::Refresh);
		UIScript::Add("JoinServer", [] ()
		{
			if (ServerList::OnlineList.size() > ServerList::CurrentServer)
			{
				Party::Connect(ServerList::OnlineList[ServerList::CurrentServer].Addr);
			}
		});
		UIScript::Add("ServerSort", [] (UIScript::Token token)
		{
			Logger::Print("Server list sorting by token: %d\n", token.Get<int>());
		});
	}

	ServerList::~ServerList()
	{
		ServerList::OnlineList.clear();
	}
}