tron@2186: /* $Id$ */
tron@2186: 
Darkvater@4826: #ifdef ENABLE_NETWORK
Darkvater@4826: 
rubidium@5469: #include "../stdafx.h"
rubidium@5469: #include "../debug.h"
rubidium@5469: #include "../string.h"
truelight@543: #include "network_data.h"
rubidium@5469: #include "../date.h"
rubidium@5469: #include "../map.h"
truelight@543: #include "network_gamelist.h"
truelight@764: #include "network_udp.h"
rubidium@5469: #include "../variables.h"
rubidium@5469: #include "../newgrf_config.h"
truelight@543: 
rubidium@5469: #include "core/udp.h"
rubidium@5469: 
rubidium@5469: /**
rubidium@5469:  * @file network_udp.c This file handles the UDP related communication.
rubidium@5469:  *
rubidium@5469:  * This is the GameServer <-> MasterServer and GameServer <-> GameClient
rubidium@5469:  * communication before the game is being joined.
rubidium@5469:  */
truelight@543: 
truelight@764: enum {
peter1138@2861: 	ADVERTISE_NORMAL_INTERVAL = 30000, // interval between advertising in ticks (15 minutes)
rubidium@4344: 	ADVERTISE_RETRY_INTERVAL  =   300, // readvertise when no response after this many ticks (9 seconds)
rubidium@4344: 	ADVERTISE_RETRY_TIMES     =     3  // give up readvertising after this much failed retries
truelight@764: };
truelight@543: 
rubidium@5619: NetworkUDPSocketHandler *_udp_client_socket; ///< udp client socket
rubidium@5619: NetworkUDPSocketHandler *_udp_server_socket; ///< udp server socket
rubidium@5619: NetworkUDPSocketHandler *_udp_master_socket; ///< udp master socket
truelight@543: 
rubidium@5619: #define DEF_UDP_RECEIVE_COMMAND(cls, type) void cls ##NetworkUDPSocketHandler::NetworkPacketReceive_ ## type ## _command(Packet *p, const struct sockaddr_in *client_addr)
truelight@903: 
rubidium@5619: ///*** Communication with the masterserver ***/
rubidium@5619: 
rubidium@5619: class MasterNetworkUDPSocketHandler : public NetworkUDPSocketHandler {
rubidium@5619: protected:
rubidium@5619: 	DECLARE_UDP_RECEIVE_COMMAND(PACKET_UDP_MASTER_ACK_REGISTER);
rubidium@5619: public:
rubidium@5619: 	virtual ~MasterNetworkUDPSocketHandler() {}
rubidium@5619: };
rubidium@5619: 
rubidium@5619: DEF_UDP_RECEIVE_COMMAND(Master, PACKET_UDP_MASTER_ACK_REGISTER)
rubidium@5619: {
rubidium@5619: 	_network_advertise_retries = 0;
rubidium@5619: 	DEBUG(net, 2, "[udp] advertising on master server successfull");
rubidium@5619: 
rubidium@5619: 	/* We are advertised, but we don't want to! */
rubidium@5619: 	if (!_network_advertise) NetworkUDPRemoveAdvertise();
rubidium@5619: }
rubidium@5619: 
rubidium@5619: ///*** Communication with clients (we are server) ***/
rubidium@5619: 
rubidium@5619: class ServerNetworkUDPSocketHandler : public NetworkUDPSocketHandler {
rubidium@5619: protected:
rubidium@5619: 	DECLARE_UDP_RECEIVE_COMMAND(PACKET_UDP_CLIENT_FIND_SERVER);
rubidium@5619: 	DECLARE_UDP_RECEIVE_COMMAND(PACKET_UDP_CLIENT_DETAIL_INFO);
rubidium@5619: 	DECLARE_UDP_RECEIVE_COMMAND(PACKET_UDP_CLIENT_GET_NEWGRFS);
rubidium@5619: public:
rubidium@5619: 	virtual ~ServerNetworkUDPSocketHandler() {}
rubidium@5619: };
rubidium@5619: 
rubidium@5619: DEF_UDP_RECEIVE_COMMAND(Server, PACKET_UDP_CLIENT_FIND_SERVER)
truelight@543: {
truelight@543: 	Packet *packet;
truelight@543: 	// Just a fail-safe.. should never happen
truelight@543: 	if (!_network_udp_server)
truelight@543: 		return;
truelight@543: 
truelight@543: 	packet = NetworkSend_Init(PACKET_UDP_SERVER_RESPONSE);
truelight@543: 
truelight@543: 	// Update some game_info
rubidium@5469: 	_network_game_info.game_date     = _date;
rubidium@5469: 	_network_game_info.map_width     = MapSizeX();
rubidium@5469: 	_network_game_info.map_height    = MapSizeY();
rubidium@5469: 	_network_game_info.map_set       = _opt.landscape;
rubidium@5469: 	_network_game_info.companies_on  = ActivePlayerCount();
rubidium@5469: 	_network_game_info.spectators_on = NetworkSpectatorCount();
rubidium@5469: 	_network_game_info.grfconfig     = _grfconfig;
rubidium@5339: 
rubidium@5619: 	this->Send_NetworkGameInfo(packet, &_network_game_info);
truelight@543: 
truelight@543: 	// Let the client know that we are here
rubidium@5619: 	this->SendPacket(packet, client_addr);
truelight@543: 
truelight@543: 	free(packet);
truelight@543: 
Darkvater@5380: 	DEBUG(net, 2, "[udp] queried from '%s'", inet_ntoa(client_addr->sin_addr));
truelight@543: }
truelight@543: 
rubidium@5619: DEF_UDP_RECEIVE_COMMAND(Server, PACKET_UDP_CLIENT_DETAIL_INFO)
truelight@638: {
rubidium@5624: 	NetworkTCPSocketHandler *cs;
truelight@638: 	NetworkClientInfo *ci;
truelight@638: 	Packet *packet;
truelight@638: 	Player *player;
truelight@638: 	byte current = 0;
truelight@638: 	int i;
truelight@638: 
truelight@638: 	// Just a fail-safe.. should never happen
tron@4077: 	if (!_network_udp_server) return;
truelight@638: 
truelight@638: 	packet = NetworkSend_Init(PACKET_UDP_SERVER_DETAIL_INFO);
truelight@638: 
truelight@638: 	/* Send the amount of active companies */
truelight@638: 	NetworkSend_uint8 (packet, NETWORK_COMPANY_INFO_VERSION);
Darkvater@2944: 	NetworkSend_uint8 (packet, ActivePlayerCount());
truelight@638: 
truelight@638: 	/* Fetch the latest version of everything */
truelight@638: 	NetworkPopulateCompanyInfo();
truelight@638: 
truelight@638: 	/* Go through all the players */
truelight@638: 	FOR_ALL_PLAYERS(player) {
truelight@638: 		/* Skip non-active players */
tron@4077: 		if (!player->is_active) continue;
truelight@638: 
truelight@638: 		current++;
truelight@638: 
truelight@638: 		/* Send the information */
tron@4077: 		NetworkSend_uint8(packet, current);
truelight@638: 
truelight@638: 		NetworkSend_string(packet, _network_player_info[player->index].company_name);
rubidium@4326: 		NetworkSend_uint32(packet, _network_player_info[player->index].inaugurated_year);
truelight@638: 		NetworkSend_uint64(packet, _network_player_info[player->index].company_value);
truelight@638: 		NetworkSend_uint64(packet, _network_player_info[player->index].money);
truelight@638: 		NetworkSend_uint64(packet, _network_player_info[player->index].income);
truelight@638: 		NetworkSend_uint16(packet, _network_player_info[player->index].performance);
truelight@638: 
tron@4077: 		/* Send 1 if there is a passord for the company else send 0 */
truelight@1011: 		if (_network_player_info[player->index].password[0] != '\0') {
tron@4077: 			NetworkSend_uint8(packet, 1);
truelight@1011: 		} else {
tron@4077: 			NetworkSend_uint8(packet, 0);
tron@1019: 		}
tron@1019: 
truelight@638: 		for (i = 0; i < NETWORK_VEHICLE_TYPES; i++)
truelight@638: 			NetworkSend_uint16(packet, _network_player_info[player->index].num_vehicle[i]);
truelight@638: 
truelight@638: 		for (i = 0; i < NETWORK_STATION_TYPES; i++)
truelight@638: 			NetworkSend_uint16(packet, _network_player_info[player->index].num_station[i]);
truelight@638: 
truelight@638: 		/* Find the clients that are connected to this player */
truelight@638: 		FOR_ALL_CLIENTS(cs) {
truelight@638: 			ci = DEREF_CLIENT_INFO(cs);
Darkvater@4878: 			if (ci->client_playas == player->index) {
truelight@638: 				/* The uint8 == 1 indicates that a client is following */
truelight@638: 				NetworkSend_uint8(packet, 1);
truelight@638: 				NetworkSend_string(packet, ci->client_name);
truelight@638: 				NetworkSend_string(packet, ci->unique_id);
rubidium@4326: 				NetworkSend_uint32(packet, ci->join_date);
truelight@638: 			}
truelight@638: 		}
truelight@638: 		/* Also check for the server itself */
truelight@638: 		ci = NetworkFindClientInfoFromIndex(NETWORK_SERVER_INDEX);
Darkvater@4878: 		if (ci->client_playas == player->index) {
truelight@638: 			/* The uint8 == 1 indicates that a client is following */
truelight@638: 			NetworkSend_uint8(packet, 1);
truelight@638: 			NetworkSend_string(packet, ci->client_name);
truelight@638: 			NetworkSend_string(packet, ci->unique_id);
rubidium@4326: 			NetworkSend_uint32(packet, ci->join_date);
truelight@638: 		}
truelight@638: 
truelight@638: 		/* Indicates end of client list */
truelight@638: 		NetworkSend_uint8(packet, 0);
truelight@638: 	}
truelight@638: 
truelight@638: 	/* And check if we have any spectators */
truelight@638: 	FOR_ALL_CLIENTS(cs) {
truelight@638: 		ci = DEREF_CLIENT_INFO(cs);
Darkvater@4878: 		if (!IsValidPlayer(ci->client_playas)) {
truelight@638: 			/* The uint8 == 1 indicates that a client is following */
truelight@638: 			NetworkSend_uint8(packet, 1);
truelight@638: 			NetworkSend_string(packet, ci->client_name);
truelight@638: 			NetworkSend_string(packet, ci->unique_id);
rubidium@4326: 			NetworkSend_uint32(packet, ci->join_date);
truelight@638: 		}
truelight@638: 	}
Darkvater@4880: 
truelight@638: 	/* Also check for the server itself */
truelight@638: 	ci = NetworkFindClientInfoFromIndex(NETWORK_SERVER_INDEX);
Darkvater@4878: 	if (!IsValidPlayer(ci->client_playas)) {
truelight@638: 		/* The uint8 == 1 indicates that a client is following */
truelight@638: 		NetworkSend_uint8(packet, 1);
truelight@638: 		NetworkSend_string(packet, ci->client_name);
truelight@638: 		NetworkSend_string(packet, ci->unique_id);
rubidium@4326: 		NetworkSend_uint32(packet, ci->join_date);
truelight@638: 	}
truelight@638: 
truelight@638: 	/* Indicates end of client list */
truelight@638: 	NetworkSend_uint8(packet, 0);
truelight@638: 
rubidium@5619: 	this->SendPacket(packet, client_addr);
truelight@638: 	free(packet);
truelight@638: }
truelight@638: 
rubidium@5339: /**
rubidium@5339:  * A client has requested the names of some NewGRFs.
rubidium@5339:  *
rubidium@5339:  * Replying this can be tricky as we have a limit of SEND_MTU bytes
rubidium@5339:  * in the reply packet and we can send up to 100 bytes per NewGRF
rubidium@5339:  * (GRF ID, MD5sum and NETWORK_GRF_NAME_LENGTH bytes for the name).
rubidium@5339:  * As SEND_MTU is _much_ less than 100 * NETWORK_MAX_GRF_COUNT, it
rubidium@5339:  * could be that a packet overflows. To stop this we only reply
rubidium@5339:  * with the first N NewGRFs so that if the first N + 1 NewGRFs
rubidium@5339:  * would be sent, the packet overflows.
rubidium@5339:  * in_reply and in_reply_count are used to keep a list of GRFs to
rubidium@5339:  * send in the reply.
rubidium@5339:  */
rubidium@5619: DEF_UDP_RECEIVE_COMMAND(Server, PACKET_UDP_CLIENT_GET_NEWGRFS)
rubidium@5339: {
rubidium@5339: 	uint8 num_grfs;
rubidium@5339: 	uint i;
rubidium@5339: 
rubidium@5339: 	const GRFConfig *in_reply[NETWORK_MAX_GRF_COUNT];
rubidium@5339: 	Packet *packet;
rubidium@5339: 	uint8 in_reply_count = 0;
rubidium@5339: 	uint packet_len = 0;
rubidium@5339: 
Darkvater@5380: 	DEBUG(net, 6, "[udp] newgrf data request from %s:%d", inet_ntoa(client_addr->sin_addr), ntohs(client_addr->sin_port));
rubidium@5339: 
rubidium@5624: 	num_grfs = NetworkRecv_uint8 (this, p);
rubidium@5339: 	if (num_grfs > NETWORK_MAX_GRF_COUNT) return;
rubidium@5339: 
rubidium@5339: 	for (i = 0; i < num_grfs; i++) {
rubidium@5339: 		GRFConfig c;
rubidium@5339: 		const GRFConfig *f;
rubidium@5339: 
rubidium@5619: 		this->Recv_GRFIdentifier(p, &c);
rubidium@5339: 
rubidium@5339: 		/* Find the matching GRF file */
rubidium@5339: 		f = FindGRFConfig(c.grfid, c.md5sum);
rubidium@5339: 		if (f == NULL) continue; // The GRF is unknown to this server
rubidium@5339: 
rubidium@5339: 		/* If the reply might exceed the size of the packet, only reply
rubidium@5341: 		 * the current list and do not send the other data.
rubidium@5341: 		 * The name could be an empty string, if so take the filename. */
rubidium@5341: 		packet_len += sizeof(c.grfid) + sizeof(c.md5sum) +
tron@5638: 				min(strlen((f->name != NULL && !StrEmpty(f->name)) ? f->name : f->filename) + 1, (size_t)NETWORK_GRF_NAME_LENGTH);
rubidium@5339: 		if (packet_len > SEND_MTU - 4) { // 4 is 3 byte header + grf count in reply
rubidium@5339: 			break;
rubidium@5339: 		}
rubidium@5339: 		in_reply[in_reply_count] = f;
rubidium@5339: 		in_reply_count++;
rubidium@5339: 	}
rubidium@5339: 
rubidium@5339: 	if (in_reply_count == 0) return;
rubidium@5339: 
rubidium@5339: 	packet = NetworkSend_Init(PACKET_UDP_SERVER_NEWGRFS);
rubidium@5339: 	NetworkSend_uint8 (packet, in_reply_count);
rubidium@5339: 	for (i = 0; i < in_reply_count; i++) {
rubidium@5339: 		char name[NETWORK_GRF_NAME_LENGTH];
rubidium@5341: 
rubidium@5341: 		/* The name could be an empty string, if so take the filename */
tron@5638: 		ttd_strlcpy(name, (in_reply[i]->name != NULL && !StrEmpty(in_reply[i]->name)) ?
rubidium@5341: 				in_reply[i]->name : in_reply[i]->filename, sizeof(name));
rubidium@5619: 	 	this->Send_GRFIdentifier(packet, in_reply[i]);
rubidium@5339: 		NetworkSend_string(packet, name);
rubidium@5339: 	}
rubidium@5339: 
rubidium@5619: 	this->SendPacket(packet, client_addr);
rubidium@5339: 	free(packet);
rubidium@5339: }
rubidium@5339: 
rubidium@5619: ///*** Communication with servers (we are client) ***/
rubidium@5619: 
rubidium@5619: class ClientNetworkUDPSocketHandler : public NetworkUDPSocketHandler {
rubidium@5619: protected:
rubidium@5619: 	DECLARE_UDP_RECEIVE_COMMAND(PACKET_UDP_SERVER_RESPONSE);
rubidium@5619: 	DECLARE_UDP_RECEIVE_COMMAND(PACKET_UDP_MASTER_RESPONSE_LIST);
rubidium@5619: 	DECLARE_UDP_RECEIVE_COMMAND(PACKET_UDP_SERVER_NEWGRFS);
rubidium@5619: 	virtual void HandleIncomingNetworkGameInfoGRFConfig(GRFConfig *config);
rubidium@5619: public:
rubidium@5619: 	virtual ~ClientNetworkUDPSocketHandler() {}
rubidium@5619: };
rubidium@5619: 
rubidium@5619: DEF_UDP_RECEIVE_COMMAND(Client, PACKET_UDP_SERVER_RESPONSE)
rubidium@5619: {
rubidium@5619: 	extern const char _openttd_revision[];
rubidium@5619: 	NetworkGameList *item;
rubidium@5619: 
rubidium@5619: 	// Just a fail-safe.. should never happen
rubidium@5619: 	if (_network_udp_server) return;
rubidium@5619: 
rubidium@5619: 	DEBUG(net, 4, "[udp] server response from %s:%d", inet_ntoa(client_addr->sin_addr), ntohs(client_addr->sin_port));
rubidium@5619: 
rubidium@5619: 	// Find next item
rubidium@5619: 	item = NetworkGameListAddItem(inet_addr(inet_ntoa(client_addr->sin_addr)), ntohs(client_addr->sin_port));
rubidium@5619: 
rubidium@5619: 	this->Recv_NetworkGameInfo(p, &item->info);
rubidium@5619: 
rubidium@5619: 	item->info.compatible = true;
rubidium@5619: 	{
rubidium@5619: 		/* Checks whether there needs to be a request for names of GRFs and makes
rubidium@5619: 		 * the request if necessary. GRFs that need to be requested are the GRFs
rubidium@5619: 		 * that do not exist on the clients system and we do not have the name
rubidium@5619: 		 * resolved of, i.e. the name is still UNKNOWN_GRF_NAME_PLACEHOLDER.
rubidium@5619: 		 * The in_request array and in_request_count are used so there is no need
rubidium@5619: 		 * to do a second loop over the GRF list, which can be relatively expensive
rubidium@5619: 		 * due to the string comparisons. */
rubidium@5619: 		const GRFConfig *in_request[NETWORK_MAX_GRF_COUNT];
rubidium@5619: 		const GRFConfig *c;
rubidium@5619: 		uint in_request_count = 0;
rubidium@5619: 		struct sockaddr_in out_addr;
rubidium@5619: 
rubidium@5619: 		for (c = item->info.grfconfig; c != NULL; c = c->next) {
rubidium@5619: 			if (HASBIT(c->flags, GCF_NOT_FOUND)) item->info.compatible = false;
rubidium@5619: 			if (!HASBIT(c->flags, GCF_NOT_FOUND) || strcmp(c->name, UNKNOWN_GRF_NAME_PLACEHOLDER) != 0) continue;
rubidium@5619: 			in_request[in_request_count] = c;
rubidium@5619: 			in_request_count++;
rubidium@5619: 		}
rubidium@5619: 
rubidium@5619: 		if (in_request_count > 0) {
rubidium@5619: 			/* There are 'unknown' GRFs, now send a request for them */
rubidium@5619: 			uint i;
rubidium@5619: 			Packet *packet = NetworkSend_Init(PACKET_UDP_CLIENT_GET_NEWGRFS);
rubidium@5619: 
rubidium@5619: 			NetworkSend_uint8 (packet, in_request_count);
rubidium@5619: 			for (i = 0; i < in_request_count; i++) {
rubidium@5619: 				this->Send_GRFIdentifier(packet, in_request[i]);
rubidium@5619: 			}
rubidium@5619: 
rubidium@5619: 			out_addr.sin_family      = AF_INET;
rubidium@5619: 			out_addr.sin_port        = htons(item->port);
rubidium@5619: 			out_addr.sin_addr.s_addr = item->ip;
rubidium@5619: 			this->SendPacket(packet, &out_addr);
rubidium@5619: 			free(packet);
rubidium@5619: 		}
rubidium@5619: 	}
rubidium@5619: 
rubidium@5619: 	if (item->info.server_lang >= NETWORK_NUM_LANGUAGES) item->info.server_lang = 0;
rubidium@5619: 	if (item->info.map_set >= NUM_LANDSCAPE ) item->info.map_set = 0;
rubidium@5619: 
rubidium@5619: 	if (item->info.hostname[0] == '\0')
rubidium@5619: 		snprintf(item->info.hostname, sizeof(item->info.hostname), "%s", inet_ntoa(client_addr->sin_addr));
rubidium@5619: 
rubidium@5619: 	/* Check if we are allowed on this server based on the revision-match */
rubidium@5619: 	item->info.version_compatible =
rubidium@5619: 		strcmp(item->info.server_revision, _openttd_revision) == 0 ||
rubidium@5619: 		strcmp(item->info.server_revision, NOREV_STRING) == 0;
rubidium@5619: 	item->info.compatible &= item->info.version_compatible; // Already contains match for GRFs
rubidium@5619: 
rubidium@5619: 	item->online = true;
rubidium@5619: 
rubidium@5619: 	UpdateNetworkGameWindow(false);
rubidium@5619: }
rubidium@5619: 
rubidium@5619: DEF_UDP_RECEIVE_COMMAND(Client, PACKET_UDP_MASTER_RESPONSE_LIST)
rubidium@5619: {
rubidium@5619: 	int i;
rubidium@5619: 	struct in_addr ip;
rubidium@5619: 	uint16 port;
rubidium@5619: 	uint8 ver;
rubidium@5619: 
rubidium@5619: 	/* packet begins with the protocol version (uint8)
rubidium@5619: 	 * then an uint16 which indicates how many
rubidium@5619: 	 * ip:port pairs are in this packet, after that
rubidium@5619: 	 * an uint32 (ip) and an uint16 (port) for each pair
rubidium@5619: 	 */
rubidium@5619: 
rubidium@5624: 	ver = NetworkRecv_uint8(this, p);
rubidium@5619: 
rubidium@5619: 	if (ver == 1) {
rubidium@5624: 		for (i = NetworkRecv_uint16(this, p); i != 0 ; i--) {
rubidium@5624: 			ip.s_addr = TO_LE32(NetworkRecv_uint32(this, p));
rubidium@5624: 			port = NetworkRecv_uint16(this, p);
rubidium@5624: 
rubidium@5624: 			/* Somehow we reached the end of the packet */
rubidium@5624: 			if (this->HasClientQuit()) return;
rubidium@5619: 			NetworkUDPQueryServer(inet_ntoa(ip), port);
rubidium@5619: 		}
rubidium@5619: 	}
rubidium@5619: }
rubidium@5619: 
rubidium@5339: /** The return of the client's request of the names of some NewGRFs */
rubidium@5619: DEF_UDP_RECEIVE_COMMAND(Client, PACKET_UDP_SERVER_NEWGRFS)
rubidium@5339: {
rubidium@5339: 	uint8 num_grfs;
rubidium@5339: 	uint i;
rubidium@5339: 
rubidium@5619: 	DEBUG(net, 6, "[udp] newgrf data reply from %s:%d", inet_ntoa(client_addr->sin_addr), ntohs(client_addr->sin_port));
rubidium@5339: 
rubidium@5624: 	num_grfs = NetworkRecv_uint8 (this, p);
rubidium@5339: 	if (num_grfs > NETWORK_MAX_GRF_COUNT) return;
rubidium@5339: 
rubidium@5339: 	for (i = 0; i < num_grfs; i++) {
rubidium@5339: 		char *unknown_name;
rubidium@5339: 		char name[NETWORK_GRF_NAME_LENGTH];
rubidium@5339: 		GRFConfig c;
rubidium@5339: 
rubidium@5619: 		this->Recv_GRFIdentifier(p, &c);
rubidium@5624: 		NetworkRecv_string(this, p, name, sizeof(name));
rubidium@5339: 
rubidium@5341: 		/* An empty name is not possible under normal circumstances
rubidium@5341: 		 * and causes problems when showing the NewGRF list. */
tron@5638: 		if (StrEmpty(name)) continue;
rubidium@5341: 
rubidium@5339: 		/* Finds the fake GRFConfig for the just read GRF ID and MD5sum tuple.
rubidium@5339: 		 * If it exists and not resolved yet, then name of the fake GRF is
rubidium@5339: 		 * overwritten with the name from the reply. */
rubidium@5339: 		unknown_name = FindUnknownGRFName(c.grfid, c.md5sum, false);
rubidium@5339: 		if (unknown_name != NULL && strcmp(unknown_name, UNKNOWN_GRF_NAME_PLACEHOLDER) == 0) {
rubidium@5339: 			ttd_strlcpy(unknown_name, name, NETWORK_GRF_NAME_LENGTH);
rubidium@5339: 		}
rubidium@5339: 	}
rubidium@5339: }
rubidium@5339: 
rubidium@5619: void ClientNetworkUDPSocketHandler::HandleIncomingNetworkGameInfoGRFConfig(GRFConfig *config)
truelight@543: {
rubidium@5619: 	/* Find the matching GRF file */
rubidium@5619: 	const GRFConfig *f = FindGRFConfig(config->grfid, config->md5sum);
rubidium@5619: 	if (f == NULL) {
rubidium@5619: 		/* Don't know the GRF, so mark game incompatible and the (possibly)
rubidium@5619: 		 * already resolved name for this GRF (another server has sent the
rubidium@5619: 		 * name of the GRF already */
rubidium@5619: 		config->name     = FindUnknownGRFName(config->grfid, config->md5sum, true);
rubidium@5619: 		SETBIT(config->flags, GCF_NOT_FOUND);
truelight@3547: 	} else {
rubidium@5619: 		config->filename = f->filename;
rubidium@5619: 		config->name     = f->name;
rubidium@5619: 		config->info     = f->info;
truelight@543: 	}
rubidium@5619: 	SETBIT(config->flags, GCF_COPY);
truelight@543: }
truelight@543: 
truelight@543: // Close UDP connection
rubidium@5619: void NetworkUDPCloseAll(void)
truelight@543: {
Darkvater@5380: 	DEBUG(net, 1, "[udp] closed listeners");
truelight@543: 
rubidium@5619: 	_udp_server_socket->Close();
rubidium@5619: 	_udp_master_socket->Close();
rubidium@5619: 	_udp_client_socket->Close();
truelight@764: 
rubidium@5521: 	_network_udp_server = false;
rubidium@5521: 	_network_udp_broadcast = 0;
truelight@543: }
truelight@543: 
truelight@543: // Broadcast to all ips
rubidium@5619: static void NetworkUDPBroadCast(NetworkUDPSocketHandler *socket)
truelight@543: {
tron@4077: 	Packet* p = NetworkSend_Init(PACKET_UDP_CLIENT_FIND_SERVER);
tron@4077: 	uint i;
truelight@543: 
tron@4077: 	for (i = 0; _broadcast_list[i] != 0; i++) {
tron@4077: 		struct sockaddr_in out_addr;
truelight@543: 
truelight@543: 		out_addr.sin_family = AF_INET;
truelight@543: 		out_addr.sin_port = htons(_network_server_port);
tron@4034: 		out_addr.sin_addr.s_addr = _broadcast_list[i];
tron@4034: 
Darkvater@5380: 		DEBUG(net, 4, "[udp] broadcasting to %s", inet_ntoa(out_addr.sin_addr));
truelight@543: 
rubidium@5619: 		socket->SendPacket(p, &out_addr);
truelight@543: 	}
tron@4035: 
tron@4035: 	free(p);
truelight@764: }
truelight@764: 
truelight@764: 
truelight@764: // Request the the server-list from the master server
truelight@764: void NetworkUDPQueryMasterServer(void)
truelight@764: {
truelight@764: 	struct sockaddr_in out_addr;
truelight@764: 	Packet *p;
truelight@764: 
rubidium@5624: 	if (!_udp_client_socket->IsConnected()) {
rubidium@5619: 		if (!_udp_client_socket->Listen(0, 0, true)) return;
rubidium@5619: 	}
truelight@764: 
truelight@764: 	p = NetworkSend_Init(PACKET_UDP_CLIENT_GET_LIST);
truelight@764: 
truelight@764: 	out_addr.sin_family = AF_INET;
truelight@764: 	out_addr.sin_port = htons(NETWORK_MASTER_SERVER_PORT);
truelight@764: 	out_addr.sin_addr.s_addr = NetworkResolveHost(NETWORK_MASTER_SERVER_HOST);
truelight@764: 
truelight@764: 	// packet only contains protocol version
truelight@764: 	NetworkSend_uint8(p, NETWORK_MASTER_SERVER_VERSION);
truelight@764: 
rubidium@5619: 	_udp_client_socket->SendPacket(p, &out_addr);
truelight@764: 
Darkvater@5380: 	DEBUG(net, 2, "[udp] master server queried at %s:%d", inet_ntoa(out_addr.sin_addr),ntohs(out_addr.sin_port));
truelight@543: 
truelight@543: 	free(p);
truelight@543: }
truelight@543: 
truelight@543: // Find all servers
truelight@543: void NetworkUDPSearchGame(void)
truelight@543: {
truelight@543: 	// We are still searching..
Darkvater@5380: 	if (_network_udp_broadcast > 0) return;
truelight@543: 
truelight@543: 	// No UDP-socket yet..
rubidium@5624: 	if (!_udp_client_socket->IsConnected()) {
rubidium@5619: 		if (!_udp_client_socket->Listen(0, 0, true)) return;
rubidium@5619: 	}
truelight@543: 
Darkvater@5380: 	DEBUG(net, 0, "[udp] searching server");
truelight@543: 
truelight@764: 	NetworkUDPBroadCast(_udp_client_socket);
truelight@543: 	_network_udp_broadcast = 300; // Stay searching for 300 ticks
truelight@543: }
truelight@543: 
tron@1329: NetworkGameList *NetworkUDPQueryServer(const char* host, unsigned short port)
truelight@543: {
truelight@543: 	struct sockaddr_in out_addr;
truelight@543: 	Packet *p;
truelight@543: 	NetworkGameList *item;
truelight@543: 
truelight@543: 	// No UDP-socket yet..
rubidium@5624: 	if (!_udp_client_socket->IsConnected()) {
rubidium@5619: 		if (!_udp_client_socket->Listen(0, 0, true)) return NULL;
rubidium@5619: 	}
truelight@543: 
truelight@543: 	out_addr.sin_family = AF_INET;
truelight@543: 	out_addr.sin_port = htons(port);
truelight@543: 	out_addr.sin_addr.s_addr = NetworkResolveHost(host);
truelight@543: 
truelight@543: 	// Clear item in gamelist
truelight@543: 	item = NetworkGameListAddItem(inet_addr(inet_ntoa(out_addr.sin_addr)), ntohs(out_addr.sin_port));
truelight@543: 	memset(&item->info, 0, sizeof(item->info));
tron@3550: 	ttd_strlcpy(item->info.server_name, host, lengthof(item->info.server_name));
tron@3550: 	ttd_strlcpy(item->info.hostname, host, lengthof(item->info.hostname));
truelight@543: 	item->online = false;
truelight@543: 
truelight@543: 	// Init the packet
truelight@638: 	p = NetworkSend_Init(PACKET_UDP_CLIENT_FIND_SERVER);
truelight@543: 
rubidium@5619: 	_udp_client_socket->SendPacket(p, &out_addr);
truelight@543: 
truelight@543: 	free(p);
truelight@543: 
truelight@543: 	UpdateNetworkGameWindow(false);
dominik@738: 	return item;
truelight@543: }
truelight@543: 
truelight@765: /* Remove our advertise from the master-server */
truelight@765: void NetworkUDPRemoveAdvertise(void)
truelight@765: {
truelight@765: 	struct sockaddr_in out_addr;
truelight@765: 	Packet *p;
truelight@765: 
truelight@765: 	/* Check if we are advertising */
Darkvater@5380: 	if (!_networking || !_network_server || !_network_udp_server) return;
truelight@765: 
truelight@765: 	/* check for socket */
rubidium@5624: 	if (!_udp_master_socket->IsConnected()) {
rubidium@5619: 		if (!_udp_master_socket->Listen(0, 0, false)) return;
rubidium@5619: 	}
truelight@765: 
Darkvater@5380: 	DEBUG(net, 1, "[udp] removing advertise from master server");
truelight@765: 
truelight@765: 	/* Find somewhere to send */
truelight@765: 	out_addr.sin_family = AF_INET;
truelight@765: 	out_addr.sin_port = htons(NETWORK_MASTER_SERVER_PORT);
truelight@765: 	out_addr.sin_addr.s_addr = NetworkResolveHost(NETWORK_MASTER_SERVER_HOST);
truelight@765: 
truelight@765: 	/* Send the packet */
truelight@765: 	p = NetworkSend_Init(PACKET_UDP_SERVER_UNREGISTER);
truelight@765: 	/* Packet is: Version, server_port */
truelight@765: 	NetworkSend_uint8(p, NETWORK_MASTER_SERVER_VERSION);
truelight@765: 	NetworkSend_uint16(p, _network_server_port);
rubidium@5619: 	_udp_master_socket->SendPacket(p, &out_addr);
truelight@765: 
truelight@765: 	free(p);
truelight@765: }
truelight@765: 
truelight@668: /* Register us to the master server
truelight@668:      This function checks if it needs to send an advertise */
truelight@716: void NetworkUDPAdvertise(void)
truelight@668: {
truelight@668: 	struct sockaddr_in out_addr;
truelight@668: 	Packet *p;
truelight@668: 
truelight@668: 	/* Check if we should send an advertise */
truelight@668: 	if (!_networking || !_network_server || !_network_udp_server || !_network_advertise)
truelight@668: 		return;
truelight@668: 
truelight@764: 	/* check for socket */
rubidium@5624: 	if (!_udp_master_socket->IsConnected()) {
rubidium@5619: 		if (!_udp_master_socket->Listen(0, 0, false)) return;
rubidium@5619: 	}
truelight@764: 
peter1138@2861: 	if (_network_need_advertise) {
peter1138@2861: 		_network_need_advertise = false;
peter1138@2861: 		_network_advertise_retries = ADVERTISE_RETRY_TIMES;
peter1138@2861: 	} else {
peter1138@2861: 		/* Only send once every ADVERTISE_NORMAL_INTERVAL ticks */
peter1138@2861: 		if (_network_advertise_retries == 0) {
peter1138@2861: 			if ((_network_last_advertise_frame + ADVERTISE_NORMAL_INTERVAL) > _frame_counter)
peter1138@2861: 				return;
peter1138@2861: 			_network_advertise_retries = ADVERTISE_RETRY_TIMES;
peter1138@2861: 		}
peter1138@2861: 
peter1138@2861: 		if ((_network_last_advertise_frame + ADVERTISE_RETRY_INTERVAL) > _frame_counter)
truelight@764: 			return;
truelight@764: 	}
truelight@764: 
truelight@764: 	_network_advertise_retries--;
peter1138@2861: 	_network_last_advertise_frame = _frame_counter;
truelight@668: 
truelight@668: 	/* Find somewhere to send */
truelight@668: 	out_addr.sin_family = AF_INET;
truelight@668: 	out_addr.sin_port = htons(NETWORK_MASTER_SERVER_PORT);
truelight@668: 	out_addr.sin_addr.s_addr = NetworkResolveHost(NETWORK_MASTER_SERVER_HOST);
truelight@668: 
Darkvater@5380: 	DEBUG(net, 1, "[udp] advertising to master server");
truelight@668: 
truelight@668: 	/* Send the packet */
truelight@668: 	p = NetworkSend_Init(PACKET_UDP_SERVER_REGISTER);
truelight@668: 	/* Packet is: WELCOME_MESSAGE, Version, server_port */
truelight@668: 	NetworkSend_string(p, NETWORK_MASTER_SERVER_WELCOME_MESSAGE);
truelight@668: 	NetworkSend_uint8(p, NETWORK_MASTER_SERVER_VERSION);
truelight@668: 	NetworkSend_uint16(p, _network_server_port);
rubidium@5619: 	_udp_master_socket->SendPacket(p, &out_addr);
truelight@764: 
truelight@668: 	free(p);
truelight@668: }
truelight@668: 
truelight@543: void NetworkUDPInitialize(void)
truelight@543: {
rubidium@5619: 	_udp_client_socket = new ClientNetworkUDPSocketHandler();
rubidium@5619: 	_udp_server_socket = new ServerNetworkUDPSocketHandler();
rubidium@5619: 	_udp_master_socket = new MasterNetworkUDPSocketHandler();
truelight@543: 
truelight@543: 	_network_udp_server = false;
truelight@543: 	_network_udp_broadcast = 0;
truelight@543: }
truelight@543: 
rubidium@5619: void NetworkUDPShutdown(void)
rubidium@5619: {
rubidium@5619: 	NetworkUDPCloseAll();
rubidium@5619: 
rubidium@5619: 	delete _udp_client_socket;
rubidium@5619: 	delete _udp_server_socket;
rubidium@5619: 	delete _udp_master_socket;
rubidium@5619: }
rubidium@5619: 
truelight@543: #endif /* ENABLE_NETWORK */