1

/* $Id$ */

     2

     3

#ifdef ENABLE_NETWORK

     4

     5

#include "stdafx.h"

     6

#include "debug.h"

     7

#include "string.h"

     8

#include "strings.h"

     9

#include "network_data.h"

    10

#include "date.h"

    11

#include "table/strings.h"

    12

#include "functions.h"

    13

#include "network_client.h"

    14

#include "network_gamelist.h"

    15

#include "network_gui.h"

    16

#include "saveload.h"

    17

#include "command.h"

    18

#include "window.h"

    19

#include "console.h"

    20

#include "variables.h"

    21

#include "ai/ai.h"

    22

    23

    24

// This file handles all the client-commands

    25

    26

    27

// So we don't make too much typos ;)

    28

#define MY_CLIENT DEREF_CLIENT(0)

    29

    30

static uint32 last_ack_frame;

    31

    32

// **********

    33

// Sending functions

    34

//   DEF_CLIENT_SEND_COMMAND has no parameters

    35

// **********

    36

    37

DEF_CLIENT_SEND_COMMAND(PACKET_CLIENT_COMPANY_INFO)

    38

{

    39

	//

    40

	// Packet: CLIENT_COMPANY_INFO

    41

	// Function: Request company-info (in detail)

    42

	// Data:

    43

	//    <none>

    44

	//

    45

	Packet *p;

    46

	_network_join_status = NETWORK_JOIN_STATUS_GETTING_COMPANY_INFO;

    47

	InvalidateWindow(WC_NETWORK_STATUS_WINDOW, 0);

    48

    49

	p = NetworkSend_Init(PACKET_CLIENT_COMPANY_INFO);

    50

	NetworkSend_Packet(p, MY_CLIENT);

    51

}

    52

    53

DEF_CLIENT_SEND_COMMAND(PACKET_CLIENT_JOIN)

    54

{

    55

	//

    56

	// Packet: CLIENT_JOIN

    57

	// Function: Try to join the server

    58

	// Data:

    59

	//    String: OpenTTD Revision (norev000 if no revision)

    60

	//    String: Player Name (max NETWORK_NAME_LENGTH)

    61

	//    uint8:  Play as Player id (1..MAX_PLAYERS)

    62

	//    uint8:  Language ID

    63

	//    String: Unique id to find the player back in server-listing

    64

	//

    65

    66

	extern const char _openttd_revision[];

    67

	Packet *p;

    68

	_network_join_status = NETWORK_JOIN_STATUS_AUTHORIZING;

    69

	InvalidateWindow(WC_NETWORK_STATUS_WINDOW, 0);

    70

    71

	p = NetworkSend_Init(PACKET_CLIENT_JOIN);

    72

	NetworkSend_string(p, _openttd_revision);

    73

	NetworkSend_string(p, _network_player_name); // Player name

    74

	NetworkSend_uint8(p, _network_playas); // PlayAs

    75

	NetworkSend_uint8(p, NETLANG_ANY); // Language

    76

	NetworkSend_string(p, _network_unique_id);

    77

	NetworkSend_Packet(p, MY_CLIENT);

    78

}

    79

    80

DEF_CLIENT_SEND_COMMAND_PARAM(PACKET_CLIENT_PASSWORD)(NetworkPasswordType type, const char *password)

    81

{

    82

	//

    83

	// Packet: CLIENT_PASSWORD

    84

	// Function: Send a password to the server to authorize

    85

	// Data:

    86

	//    uint8:  NetworkPasswordType

    87

	//    String: Password

    88

	//

    89

	Packet *p = NetworkSend_Init(PACKET_CLIENT_PASSWORD);

    90

	NetworkSend_uint8(p, type);

    91

	NetworkSend_string(p, password);

    92

	NetworkSend_Packet(p, MY_CLIENT);

    93

}

    94

    95

DEF_CLIENT_SEND_COMMAND(PACKET_CLIENT_GETMAP)

    96

{

    97

	//

    98

	// Packet: CLIENT_GETMAP

    99

	// Function: Request the map from the server

   100

	// Data:

   101

	//    <none>

   102

	//

   103

   104

	Packet *p = NetworkSend_Init(PACKET_CLIENT_GETMAP);

   105

	NetworkSend_Packet(p, MY_CLIENT);

   106

}

   107

   108

DEF_CLIENT_SEND_COMMAND(PACKET_CLIENT_MAP_OK)

   109

{

   110

	//

   111

	// Packet: CLIENT_MAP_OK

   112

	// Function: Tell the server that we are done receiving/loading the map

   113

	// Data:

   114

	//    <none>

   115

	//

   116

   117

	Packet *p = NetworkSend_Init(PACKET_CLIENT_MAP_OK);

   118

	NetworkSend_Packet(p, MY_CLIENT);

   119

}

   120

   121

DEF_CLIENT_SEND_COMMAND(PACKET_CLIENT_ACK)

   122

{

   123

	//

   124

	// Packet: CLIENT_ACK

   125

	// Function: Tell the server we are done with this frame

   126

	// Data:

   127

	//    uint32: current FrameCounter of the client

   128

	//

   129

   130

	Packet *p = NetworkSend_Init(PACKET_CLIENT_ACK);

   131

   132

	NetworkSend_uint32(p, _frame_counter);

   133

	NetworkSend_Packet(p, MY_CLIENT);

   134

}

   135

   136

// Send a command packet to the server

   137

DEF_CLIENT_SEND_COMMAND_PARAM(PACKET_CLIENT_COMMAND)(CommandPacket *cp)

   138

{

   139

	//

   140

	// Packet: CLIENT_COMMAND

   141

	// Function: Send a DoCommand to the Server

   142

	// Data:

   143

	//    uint8:  PlayerID (0..MAX_PLAYERS-1)

   144

	//    uint32: CommandID (see command.h)

   145

	//    uint32: P1 (free variables used in DoCommand)

   146

	//    uint32: P2

   147

	//    uint32: Tile

   148

	//    string: text

   149

	//    uint8:  CallBackID (see callback_table.c)

   150

	//

   151

   152

	Packet *p = NetworkSend_Init(PACKET_CLIENT_COMMAND);

   153

   154

	NetworkSend_uint8(p, cp->player);

   155

	NetworkSend_uint32(p, cp->cmd);

   156

	NetworkSend_uint32(p, cp->p1);

   157

	NetworkSend_uint32(p, cp->p2);

   158

	NetworkSend_uint32(p, (uint32)cp->tile);

   159

	NetworkSend_string(p, cp->text);

   160

	NetworkSend_uint8(p, cp->callback);

   161

   162

	NetworkSend_Packet(p, MY_CLIENT);

   163

}

   164

   165

// Send a chat-packet over the network

   166

DEF_CLIENT_SEND_COMMAND_PARAM(PACKET_CLIENT_CHAT)(NetworkAction action, DestType desttype, int dest, const char *msg)

   167

{

   168

	//

   169

	// Packet: CLIENT_CHAT

   170

	// Function: Send a chat-packet to the serve

   171

	// Data:

   172

	//    uint8:  ActionID (see network_data.h, NetworkAction)

   173

	//    uint8:  Destination Type (see network_data.h, DestType);

   174

	//    uint8:  Destination Player (1..MAX_PLAYERS)

   175

	//    String: Message (max MAX_TEXT_MSG_LEN)

   176

	//

   177

   178

	Packet *p = NetworkSend_Init(PACKET_CLIENT_CHAT);

   179

   180

	NetworkSend_uint8(p, action);

   181

	NetworkSend_uint8(p, desttype);

   182

	NetworkSend_uint8(p, dest);

   183

	NetworkSend_string(p, msg);

   184

	NetworkSend_Packet(p, MY_CLIENT);

   185

}

   186

   187

// Send an error-packet over the network

   188

DEF_CLIENT_SEND_COMMAND_PARAM(PACKET_CLIENT_ERROR)(NetworkErrorCode errorno)

   189

{

   190

	//

   191

	// Packet: CLIENT_ERROR

   192

	// Function: The client made an error and is quiting the game

   193

	// Data:

   194

	//    uint8:  ErrorID (see network_data.h, NetworkErrorCode)

   195

	//

   196

	Packet *p = NetworkSend_Init(PACKET_CLIENT_ERROR);

   197

   198

	NetworkSend_uint8(p, errorno);

   199

	NetworkSend_Packet(p, MY_CLIENT);

   200

}

   201

   202

DEF_CLIENT_SEND_COMMAND_PARAM(PACKET_CLIENT_SET_PASSWORD)(const char *password)

   203

{

   204

	//

   205

	// Packet: PACKET_CLIENT_SET_PASSWORD

   206

	// Function: Set the password for the clients current company

   207

	// Data:

   208

	//    String: Password

   209

	//

   210

	Packet *p = NetworkSend_Init(PACKET_CLIENT_SET_PASSWORD);

   211

   212

	NetworkSend_string(p, password);

   213

	NetworkSend_Packet(p, MY_CLIENT);

   214

}

   215

   216

DEF_CLIENT_SEND_COMMAND_PARAM(PACKET_CLIENT_SET_NAME)(const char *name)

   217

{

   218

	//

   219

	// Packet: PACKET_CLIENT_SET_NAME

   220

	// Function: Gives the player a new name

   221

	// Data:

   222

	//    String: Name

   223

	//

   224

	Packet *p = NetworkSend_Init(PACKET_CLIENT_SET_NAME);

   225

   226

	NetworkSend_string(p, name);

   227

	NetworkSend_Packet(p, MY_CLIENT);

   228

}

   229

   230

// Send an quit-packet over the network

   231

DEF_CLIENT_SEND_COMMAND_PARAM(PACKET_CLIENT_QUIT)(const char *leavemsg)

   232

{

   233

	//

   234

	// Packet: CLIENT_QUIT

   235

	// Function: The client is quiting the game

   236

	// Data:

   237

	//    String: leave-message

   238

	//

   239

	Packet *p = NetworkSend_Init(PACKET_CLIENT_QUIT);

   240

   241

	NetworkSend_string(p, leavemsg);

   242

	NetworkSend_Packet(p, MY_CLIENT);

   243

}

   244

   245

DEF_CLIENT_SEND_COMMAND_PARAM(PACKET_CLIENT_RCON)(const char *pass, const char *command)

   246

{

   247

	Packet *p = NetworkSend_Init(PACKET_CLIENT_RCON);

   248

	NetworkSend_string(p, pass);

   249

	NetworkSend_string(p, command);

   250

	NetworkSend_Packet(p, MY_CLIENT);

   251

}

   252

   253

   254

// **********

   255

// Receiving functions

   256

//   DEF_CLIENT_RECEIVE_COMMAND has parameter: Packet *p

   257

// **********

   258

   259

extern bool SafeSaveOrLoad(const char *filename, int mode, int newgm);

   260

   261

DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_FULL)

   262

{

   263

	// We try to join a server which is full

   264

	_switch_mode_errorstr = STR_NETWORK_ERR_SERVER_FULL;

   265

	DeleteWindowById(WC_NETWORK_STATUS_WINDOW, 0);

   266

   267

	return NETWORK_RECV_STATUS_SERVER_FULL;

   268

}

   269

   270

DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_BANNED)

   271

{

   272

	// We try to join a server where we are banned

   273

	_switch_mode_errorstr = STR_NETWORK_ERR_SERVER_BANNED;

   274

	DeleteWindowById(WC_NETWORK_STATUS_WINDOW, 0);

   275

   276

	return NETWORK_RECV_STATUS_SERVER_BANNED;

   277

}

   278

   279

DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_COMPANY_INFO)

   280

{

   281

	byte company_info_version;

   282

	int i;

   283

   284

	company_info_version = NetworkRecv_uint8(MY_CLIENT, p);

   285

   286

	if (!MY_CLIENT->quited && company_info_version == NETWORK_COMPANY_INFO_VERSION) {

   287

		byte total;

   288

		byte current;

   289

   290

		total = NetworkRecv_uint8(MY_CLIENT, p);

   291

   292

		// There is no data at all..

   293

		if (total == 0)

   294

			return NETWORK_RECV_STATUS_CLOSE_QUERY;

   295

   296

		current = NetworkRecv_uint8(MY_CLIENT, p);

   297

		if (current >= MAX_PLAYERS)

   298

			return NETWORK_RECV_STATUS_CLOSE_QUERY;

   299

   300

		NetworkRecv_string(MY_CLIENT, p, _network_player_info[current].company_name, sizeof(_network_player_info[current].company_name));

   301

		_network_player_info[current].inaugurated_year = NetworkRecv_uint32(MY_CLIENT, p);

   302

		_network_player_info[current].company_value = NetworkRecv_uint64(MY_CLIENT, p);

   303

		_network_player_info[current].money = NetworkRecv_uint64(MY_CLIENT, p);

   304

		_network_player_info[current].income = NetworkRecv_uint64(MY_CLIENT, p);

   305

		_network_player_info[current].performance = NetworkRecv_uint16(MY_CLIENT, p);

   306

		_network_player_info[current].use_password = NetworkRecv_uint8(MY_CLIENT, p);

   307

		for (i = 0; i < NETWORK_VEHICLE_TYPES; i++)

   308

			_network_player_info[current].num_vehicle[i] = NetworkRecv_uint16(MY_CLIENT, p);

   309

		for (i = 0; i < NETWORK_STATION_TYPES; i++)

   310

			_network_player_info[current].num_station[i] = NetworkRecv_uint16(MY_CLIENT, p);

   311

   312

		NetworkRecv_string(MY_CLIENT, p, _network_player_info[current].players, sizeof(_network_player_info[current].players));

   313

   314

		InvalidateWindow(WC_NETWORK_WINDOW, 0);

   315

   316

		return NETWORK_RECV_STATUS_OKAY;

   317

	}

   318

   319

	return NETWORK_RECV_STATUS_CLOSE_QUERY;

   320

}

   321

   322

// This packet contains info about the client (playas and name)

   323

//  as client we save this in NetworkClientInfo, linked via 'index'

   324

//  which is always an unique number on a server.

   325

DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_CLIENT_INFO)

   326

{

   327

	NetworkClientInfo *ci;

   328

	uint16 index = NetworkRecv_uint16(MY_CLIENT, p);

   329

	PlayerID playas = NetworkRecv_uint8(MY_CLIENT, p);

   330

	char name[NETWORK_NAME_LENGTH];

   331

	char unique_id[NETWORK_NAME_LENGTH];

   332

   333

	NetworkRecv_string(MY_CLIENT, p, name, sizeof(name));

   334

	NetworkRecv_string(MY_CLIENT, p, unique_id, sizeof(unique_id));

   335

   336

	if (MY_CLIENT->quited)

   337

		return NETWORK_RECV_STATUS_CONN_LOST;

   338

   339

	/* Do we receive a change of data? Most likely we changed playas */

   340

	if (index == _network_own_client_index) {

   341

		_network_playas = playas;

   342

   343

	}

   344

   345

	ci = NetworkFindClientInfoFromIndex(index);

   346

	if (ci != NULL) {

   347

		if (playas == ci->client_playas && strcmp(name, ci->client_name) != 0) {

   348

			// Client name changed, display the change

   349

			NetworkTextMessage(NETWORK_ACTION_NAME_CHANGE, 1, false, ci->client_name, "%s", name);

   350

		} else if (playas != ci->client_playas) {

   351

			// The player changed from client-player..

   352

			// Do not display that for now

   353

		}

   354

   355

		ci->client_playas = playas;

   356

		ttd_strlcpy(ci->client_name, name, sizeof(ci->client_name));

   357

   358

		InvalidateWindow(WC_CLIENT_LIST, 0);

   359

   360

		return NETWORK_RECV_STATUS_OKAY;

   361

	}

   362

   363

	// We don't have this index yet, find an empty index, and put the data there

   364

	ci = NetworkFindClientInfoFromIndex(NETWORK_EMPTY_INDEX);

   365

	if (ci != NULL) {

   366

		ci->client_index = index;

   367

		ci->client_playas = playas;

   368

   369

		ttd_strlcpy(ci->client_name, name, sizeof(ci->client_name));

   370

		ttd_strlcpy(ci->unique_id, unique_id, sizeof(ci->unique_id));

   371

   372

		InvalidateWindow(WC_CLIENT_LIST, 0);

   373

   374

		return NETWORK_RECV_STATUS_OKAY;

   375

	}

   376

   377

	// Here the program should never ever come.....

   378

	return NETWORK_RECV_STATUS_MALFORMED_PACKET;

   379

}

   380

   381

DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_ERROR)

   382

{

   383

	NetworkErrorCode error = NetworkRecv_uint8(MY_CLIENT, p);

   384

   385

	switch (error) {

   386

		/* We made an error in the protocol, and our connection is closed.... */

   387

		case NETWORK_ERROR_NOT_AUTHORIZED:

   388

		case NETWORK_ERROR_NOT_EXPECTED:

   389

		case NETWORK_ERROR_PLAYER_MISMATCH:

   390

			_switch_mode_errorstr = STR_NETWORK_ERR_SERVER_ERROR;

   391

			break;

   392

		case NETWORK_ERROR_FULL:

   393

			_switch_mode_errorstr = STR_NETWORK_ERR_SERVER_FULL;

   394

			break;

   395

		case NETWORK_ERROR_WRONG_REVISION:

   396

			_switch_mode_errorstr = STR_NETWORK_ERR_WRONG_REVISION;

   397

			break;

   398

		case NETWORK_ERROR_WRONG_PASSWORD:

   399

			_switch_mode_errorstr = STR_NETWORK_ERR_WRONG_PASSWORD;

   400

			break;

   401

		case NETWORK_ERROR_KICKED:

   402

			_switch_mode_errorstr = STR_NETWORK_ERR_KICKED;

   403

			break;

   404

		case NETWORK_ERROR_CHEATER:

   405

			_switch_mode_errorstr = STR_NETWORK_ERR_CHEATER;

   406

			break;

   407

		default:

   408

			_switch_mode_errorstr = STR_NETWORK_ERR_LOSTCONNECTION;

   409

	}

   410

   411

	DeleteWindowById(WC_NETWORK_STATUS_WINDOW, 0);

   412

   413

	return NETWORK_RECV_STATUS_SERVER_ERROR;

   414

}

   415

   416

DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_NEED_PASSWORD)

   417

{

   418

	NetworkPasswordType type = NetworkRecv_uint8(MY_CLIENT, p);

   419

   420

	switch (type) {

   421

		case NETWORK_GAME_PASSWORD:

   422

		case NETWORK_COMPANY_PASSWORD:

   423

			ShowNetworkNeedPassword(type);

   424

			return NETWORK_RECV_STATUS_OKAY;

   425

   426

		default: return NETWORK_RECV_STATUS_MALFORMED_PACKET;

   427

	}

   428

}

   429

   430

DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_WELCOME)

   431

{

   432

	_network_own_client_index = NetworkRecv_uint16(MY_CLIENT, p);

   433

   434

	// Start receiving the map

   435

	SEND_COMMAND(PACKET_CLIENT_GETMAP)();

   436

	return NETWORK_RECV_STATUS_OKAY;

   437

}

   438

   439

DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_WAIT)

   440

{

   441

	_network_join_status = NETWORK_JOIN_STATUS_WAITING;

   442

	_network_join_waiting = NetworkRecv_uint8(MY_CLIENT, p);

   443

	InvalidateWindow(WC_NETWORK_STATUS_WINDOW, 0);

   444

   445

	// We are put on hold for receiving the map.. we need GUI for this ;)

   446

	DEBUG(net, 1)("[NET] The server is currently busy sending the map to someone else.. please hold..." );

   447

	DEBUG(net, 1)("[NET]  There are %d clients in front of you", _network_join_waiting);

   448

   449

	return NETWORK_RECV_STATUS_OKAY;

   450

}

   451

   452

DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_MAP)

   453

{

   454

	static char filename[256];

   455

	static FILE *file_pointer;

   456

   457

	byte maptype;

   458

   459

	maptype = NetworkRecv_uint8(MY_CLIENT, p);

   460

   461

	if (MY_CLIENT->quited)

   462

		return NETWORK_RECV_STATUS_CONN_LOST;

   463

   464

	// First packet, init some stuff

   465

	if (maptype == MAP_PACKET_START) {

   466

		// The name for the temp-map

   467

		sprintf(filename, "%s%snetwork_client.tmp",  _path.autosave_dir, PATHSEP);

   468

   469

		file_pointer = fopen(filename, "wb");

   470

		if (file_pointer == NULL) {

   471

			_switch_mode_errorstr = STR_NETWORK_ERR_SAVEGAMEERROR;

   472

			return NETWORK_RECV_STATUS_SAVEGAME;

   473

		}

   474

   475

		_frame_counter = _frame_counter_server = _frame_counter_max = NetworkRecv_uint32(MY_CLIENT, p);

   476

   477

		_network_join_status = NETWORK_JOIN_STATUS_DOWNLOADING;

   478

		_network_join_kbytes = 0;

   479

		_network_join_kbytes_total = NetworkRecv_uint32(MY_CLIENT, p) / 1024;

   480

		InvalidateWindow(WC_NETWORK_STATUS_WINDOW, 0);

   481

   482

		// The first packet does not contain any more data

   483

		return NETWORK_RECV_STATUS_OKAY;

   484

	}

   485

   486

	if (maptype == MAP_PACKET_NORMAL) {

   487

		// We are still receiving data, put it to the file

   488

		fwrite(p->buffer + p->pos, 1, p->size - p->pos, file_pointer);

   489

   490

		_network_join_kbytes = ftell(file_pointer) / 1024;

   491

		InvalidateWindow(WC_NETWORK_STATUS_WINDOW, 0);

   492

	}

   493

   494

	// Check if this was the last packet

   495

	if (maptype == MAP_PACKET_END) {

   496

		fclose(file_pointer);

   497

   498

		_network_join_status = NETWORK_JOIN_STATUS_PROCESSING;

   499

		InvalidateWindow(WC_NETWORK_STATUS_WINDOW, 0);

   500

   501

		// The map is done downloading, load it

   502

		// Load the map

   503

		if (!SafeSaveOrLoad(filename, SL_LOAD, GM_NORMAL)) {

   504

			DeleteWindowById(WC_NETWORK_STATUS_WINDOW, 0);

   505

			_switch_mode_errorstr = STR_NETWORK_ERR_SAVEGAMEERROR;

   506

			return NETWORK_RECV_STATUS_SAVEGAME;

   507

		}

   508

   509

		_opt_ptr = &_opt; // during a network game you are always in-game

   510

   511

		// Say we received the map and loaded it correctly!

   512

		SEND_COMMAND(PACKET_CLIENT_MAP_OK)();

   513

   514

		if (_network_playas == 0 || _network_playas > MAX_PLAYERS ||

   515

				!GetPlayer(_network_playas - 1)->is_active) {