# network_client.cpp

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    00001 /* $Id: network_client.cpp 19132 2010-02-14 16:31:35Z alberth $ */
    00002
    00003 /*
    00004  * This file is part of OpenTTD.
    00005  * 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.
    00006  * 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.
    00007  * 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/>.
    00008  */
    00009
    00012 #ifdef ENABLE_NETWORK
    00013
    00014 #include "../stdafx.h"
    00015 #include "../debug.h"
    00016 #include "network_internal.h"
    00017 #include "network_gui.h"
    00018 #include "../saveload/saveload.h"
    00019 #include "../command_func.h"
    00020 #include "../console_func.h"
    00021 #include "../fileio_func.h"
    00022 #include "../3rdparty/md5/md5.h"
    00023 #include "../strings_func.h"
    00024 #include "../window_func.h"
    00025 #include "../company_func.h"
    00026 #include "../company_base.h"
    00027 #include "../company_gui.h"
    00028 #include "../rev.h"
    00029 #include "network.h"
    00030 #include "network_base.h"
    00031
    00032 #include "table/strings.h"
    00033
    00034 /* This file handles all the client-commands */
    00035
    00036
    00037 /* So we don't make too much typos ;) */
    00038 #define MY_CLIENT NetworkClientSocket::Get(0)
    00039
    00040 static uint32 last_ack_frame;
    00041
    00043 static uint32 _password_game_seed;
    00045 static char _password_server_id[NETWORK_SERVER_ID_LENGTH];
    00046
    00048 static uint8 _network_server_max_companies;
    00050 static uint8 _network_server_max_spectators;
    00051
    00053 CompanyID _network_join_as;
    00054
    00056 const char *_network_join_server_password = NULL;
    00058 const char *_network_join_company_password = NULL;
    00059
    00061 assert_compile(NETWORK_SERVER_ID_LENGTH == 16 * 2 + 1);
    00062
    00068 static const char *GenerateCompanyPasswordHash(const char *password)
    00069 {
    00070   if (StrEmpty(password)) return password;
    00071
    00072   char salted_password[NETWORK_SERVER_ID_LENGTH];
    00073
    00074   memset(salted_password, 0, sizeof(salted_password));
    00075   snprintf(salted_password, sizeof(salted_password), "%s", password);
    00076   /* Add the game seed and the server's ID as the salt. */
    00077   for (uint i = 0; i < NETWORK_SERVER_ID_LENGTH - 1; i++) salted_password[i] ^= _password_server_id[i] ^ (_password_game_seed >> i);
    00078
    00079   Md5 checksum;
    00080   uint8 digest[16];
    00081   static char hashed_password[NETWORK_SERVER_ID_LENGTH];
    00082
    00083   /* Generate the MD5 hash */
    00084   checksum.Append((const uint8*)salted_password, sizeof(salted_password) - 1);
    00085   checksum.Finish(digest);
    00086
    00087   for (int di = 0; di < 16; di++) sprintf(hashed_password + di * 2, "%02x", digest[di]);
    00088   hashed_password[lengthof(hashed_password) - 1] = '\0';
    00089
    00090   return hashed_password;
    00091 }
    00092
    00096 void HashCurrentCompanyPassword(const char *password)
    00097 {
    00098   _password_game_seed = _settings_game.game_creation.generation_seed;
    00099   strecpy(_password_server_id, _settings_client.network.network_id, lastof(_password_server_id));
    00100
    00101   const char *new_pw = GenerateCompanyPasswordHash(password);
    00102   strecpy(_network_company_states[_local_company].password, new_pw, lastof(_network_company_states[_local_company].password));
    00103
    00104   if (_network_server) {
    00105     NetworkServerUpdateCompanyPassworded(_local_company, !StrEmpty(_network_company_states[_local_company].password));
    00106   }
    00107 }
    00108
    00109
    00110 /***********
    00111  * Sending functions
    00112  *   DEF_CLIENT_SEND_COMMAND has no parameters
    00113  ************/
    00114
    00115 DEF_CLIENT_SEND_COMMAND(PACKET_CLIENT_COMPANY_INFO)
    00116 {
    00117   /*
    00118    * Packet: CLIENT_COMPANY_INFO
    00119    * Function: Request company-info (in detail)
    00120    * Data:
    00121    *    <none>
    00122    */
    00123   Packet *p;
    00124   _network_join_status = NETWORK_JOIN_STATUS_GETTING_COMPANY_INFO;
    00125   SetWindowDirty(WC_NETWORK_STATUS_WINDOW, 0);
    00126
    00127   p = new Packet(PACKET_CLIENT_COMPANY_INFO);
    00128   MY_CLIENT->Send_Packet(p);
    00129   return NETWORK_RECV_STATUS_OKAY;
    00130 }
    00131
    00132 DEF_CLIENT_SEND_COMMAND(PACKET_CLIENT_JOIN)
    00133 {
    00134   /*
    00135    * Packet: CLIENT_JOIN
    00136    * Function: Try to join the server
    00137    * Data:
    00138    *    String: OpenTTD Revision (norev000 if no revision)
    00139    *    String: Client Name (max NETWORK_NAME_LENGTH)
    00140    *    uint8:  Play as Company id (1..MAX_COMPANIES)
    00141    *    uint8:  Language ID
    00142    */
    00143
    00144   Packet *p;
    00145   _network_join_status = NETWORK_JOIN_STATUS_AUTHORIZING;
    00146   SetWindowDirty(WC_NETWORK_STATUS_WINDOW, 0);
    00147
    00148   p = new Packet(PACKET_CLIENT_JOIN);
    00149   p->Send_string(_openttd_revision);
    00150   p->Send_string(_settings_client.network.client_name); // Client name
    00151   p->Send_uint8 (_network_join_as);     // PlayAs
    00152   p->Send_uint8 (NETLANG_ANY);          // Language
    00153   MY_CLIENT->Send_Packet(p);
    00154   return NETWORK_RECV_STATUS_OKAY;
    00155 }
    00156
    00157 DEF_CLIENT_SEND_COMMAND(PACKET_CLIENT_NEWGRFS_CHECKED)
    00158 {
    00159   /*
    00160    * Packet: CLIENT_NEWGRFS_CHECKED
    00161    * Function: Tell the server that we have the required GRFs
    00162    * Data:
    00163    */
    00164
    00165   Packet *p = new Packet(PACKET_CLIENT_NEWGRFS_CHECKED);
    00166   MY_CLIENT->Send_Packet(p);
    00167   return NETWORK_RECV_STATUS_OKAY;
    00168 }
    00169
    00170 DEF_CLIENT_SEND_COMMAND_PARAM(PACKET_CLIENT_PASSWORD)(NetworkPasswordType type, const char *password)
    00171 {
    00172   /*
    00173    * Packet: CLIENT_PASSWORD
    00174    * Function: Send a password to the server to authorize
    00175    * Data:
    00176    *    uint8:  NetworkPasswordType
    00177    *    String: Password
    00178    */
    00179   Packet *p = new Packet(PACKET_CLIENT_PASSWORD);
    00180   p->Send_uint8 (type);
    00181   p->Send_string(type == NETWORK_GAME_PASSWORD ? password : GenerateCompanyPasswordHash(password));
    00182   MY_CLIENT->Send_Packet(p);
    00183   return NETWORK_RECV_STATUS_OKAY;
    00184 }
    00185
    00186 DEF_CLIENT_SEND_COMMAND(PACKET_CLIENT_GETMAP)
    00187 {
    00188   /*
    00189    * Packet: CLIENT_GETMAP
    00190    * Function: Request the map from the server
    00191    * Data:
    00192    *    <none>
    00193    */
    00194
    00195   Packet *p = new Packet(PACKET_CLIENT_GETMAP);
    00196   /* Send the OpenTTD version to the server, let it validate it too.
    00197    * But only do it for stable releases because of those we are sure
    00198    * that everybody has the same NewGRF version. For trunk and the
    00199    * branches we make tarballs of the OpenTTDs compiled from tarball
    00200    * will have the lower bits set to 0. As such they would become
    00201    * incompatible, which we would like to prevent by this. */
    00202   if (HasBit(_openttd_newgrf_version, 19)) p->Send_uint32(_openttd_newgrf_version);
    00203   MY_CLIENT->Send_Packet(p);
    00204   return NETWORK_RECV_STATUS_OKAY;
    00205 }
    00206
    00207 DEF_CLIENT_SEND_COMMAND(PACKET_CLIENT_MAP_OK)
    00208 {
    00209   /*
    00210    * Packet: CLIENT_MAP_OK
    00211    * Function: Tell the server that we are done receiving/loading the map
    00212    * Data:
    00213    *    <none>
    00214    */
    00215
    00216   Packet *p = new Packet(PACKET_CLIENT_MAP_OK);
    00217   MY_CLIENT->Send_Packet(p);
    00218   return NETWORK_RECV_STATUS_OKAY;
    00219 }
    00220
    00221 DEF_CLIENT_SEND_COMMAND(PACKET_CLIENT_ACK)
    00222 {
    00223   /*
    00224    * Packet: CLIENT_ACK
    00225    * Function: Tell the server we are done with this frame
    00226    * Data:
    00227    *    uint32: current FrameCounter of the client
    00228    */
    00229
    00230   Packet *p = new Packet(PACKET_CLIENT_ACK);
    00231
    00232   p->Send_uint32(_frame_counter);
    00233   MY_CLIENT->Send_Packet(p);
    00234   return NETWORK_RECV_STATUS_OKAY;
    00235 }
    00236
    00237 /* Send a command packet to the server */
    00238 DEF_CLIENT_SEND_COMMAND_PARAM(PACKET_CLIENT_COMMAND)(const CommandPacket *cp)
    00239 {
    00240   /*
    00241    * Packet: CLIENT_COMMAND
    00242    * Function: Send a DoCommand to the Server
    00243    * Data:
    00244    *    uint8:  CompanyID (0..MAX_COMPANIES-1)
    00245    *    uint32: CommandID (see command.h)
    00246    *    uint32: P1 (free variables used in DoCommand)
    00247    *    uint32: P2
    00248    *    uint32: Tile
    00249    *    string: text
    00250    *    uint8:  CallBackID
    00251    */
    00252
    00253   Packet *p = new Packet(PACKET_CLIENT_COMMAND);
    00254   MY_CLIENT->Send_Command(p, cp);
    00255
    00256   MY_CLIENT->Send_Packet(p);
    00257   return NETWORK_RECV_STATUS_OKAY;
    00258 }
    00259
    00260 /* Send a chat-packet over the network */
    00261 DEF_CLIENT_SEND_COMMAND_PARAM(PACKET_CLIENT_CHAT)(NetworkAction action, DestType type, int dest, const char *msg, int64 data)
    00262 {
    00263   /*
    00264    * Packet: CLIENT_CHAT
    00265    * Function: Send a chat-packet to the serve
    00266    * Data:
    00267    *    uint8:  ActionID (see network_data.h, NetworkAction)
    00268    *    uint8:  Destination Type (see network_data.h, DestType);
    00269    *    uint32: Destination CompanyID/Client-identifier
    00270    *    String: Message (max NETWORK_CHAT_LENGTH)
    00271    *    uint64: Some arbitrary number
    00272    */
    00273
    00274   Packet *p = new Packet(PACKET_CLIENT_CHAT);
    00275
    00276   p->Send_uint8 (action);
    00277   p->Send_uint8 (type);
    00278   p->Send_uint32(dest);
    00279   p->Send_string(msg);
    00280   p->Send_uint64(data);
    00281
    00282   MY_CLIENT->Send_Packet(p);
    00283   return NETWORK_RECV_STATUS_OKAY;
    00284 }
    00285
    00286 /* Send an error-packet over the network */
    00287 DEF_CLIENT_SEND_COMMAND_PARAM(PACKET_CLIENT_ERROR)(NetworkErrorCode errorno)
    00288 {
    00289   /*
    00290    * Packet: CLIENT_ERROR
    00291    * Function: The client made an error and is quiting the game
    00292    * Data:
    00293    *    uint8:  ErrorID (see network_data.h, NetworkErrorCode)
    00294    */
    00295   Packet *p = new Packet(PACKET_CLIENT_ERROR);
    00296
    00297   p->Send_uint8(errorno);
    00298   MY_CLIENT->Send_Packet(p);
    00299   return NETWORK_RECV_STATUS_OKAY;
    00300 }
    00301
    00302 DEF_CLIENT_SEND_COMMAND_PARAM(PACKET_CLIENT_SET_PASSWORD)(const char *password)
    00303 {
    00304   /*
    00305    * Packet: PACKET_CLIENT_SET_PASSWORD
    00306    * Function: Set the password for the clients current company
    00307    * Data:
    00308    *    String: Password
    00309    */
    00310   Packet *p = new Packet(PACKET_CLIENT_SET_PASSWORD);
    00311
    00312   p->Send_string(GenerateCompanyPasswordHash(password));
    00313   MY_CLIENT->Send_Packet(p);
    00314   return NETWORK_RECV_STATUS_OKAY;
    00315 }
    00316
    00317 DEF_CLIENT_SEND_COMMAND_PARAM(PACKET_CLIENT_SET_NAME)(const char *name)
    00318 {
    00319   /*
    00320    * Packet: PACKET_CLIENT_SET_NAME
    00321    * Function: Gives the client a new name
    00322    * Data:
    00323    *    String: Name
    00324    */
    00325   Packet *p = new Packet(PACKET_CLIENT_SET_NAME);
    00326
    00327   p->Send_string(name);
    00328   MY_CLIENT->Send_Packet(p);
    00329   return NETWORK_RECV_STATUS_OKAY;
    00330 }
    00331
    00332 /* Send an quit-packet over the network */
    00333 DEF_CLIENT_SEND_COMMAND_PARAM(PACKET_CLIENT_QUIT)()
    00334 {
    00335   /*
    00336    * Packet: CLIENT_QUIT
    00337    * Function: The client is quiting the game
    00338    * Data:
    00339    */
    00340   Packet *p = new Packet(PACKET_CLIENT_QUIT);
    00341
    00342   MY_CLIENT->Send_Packet(p);
    00343   return NETWORK_RECV_STATUS_OKAY;
    00344 }
    00345
    00346 DEF_CLIENT_SEND_COMMAND_PARAM(PACKET_CLIENT_RCON)(const char *pass, const char *command)
    00347 {
    00348   Packet *p = new Packet(PACKET_CLIENT_RCON);
    00349   p->Send_string(pass);
    00350   p->Send_string(command);
    00351   MY_CLIENT->Send_Packet(p);
    00352   return NETWORK_RECV_STATUS_OKAY;
    00353 }
    00354
    00355 DEF_CLIENT_SEND_COMMAND_PARAM(PACKET_CLIENT_MOVE)(CompanyID company, const char *pass)
    00356 {
    00357   Packet *p = new Packet(PACKET_CLIENT_MOVE);
    00358   p->Send_uint8(company);
    00359   p->Send_string(GenerateCompanyPasswordHash(pass));
    00360   MY_CLIENT->Send_Packet(p);
    00361   return NETWORK_RECV_STATUS_OKAY;
    00362 }
    00363
    00364
    00365 /***********
    00366  * Receiving functions
    00367  *   DEF_CLIENT_RECEIVE_COMMAND has parameter: Packet *p
    00368  ************/
    00369
    00370 extern bool SafeSaveOrLoad(const char *filename, int mode, GameMode newgm, Subdirectory subdir);
    00371 extern StringID _switch_mode_errorstr;
    00372
    00373 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_FULL)
    00374 {
    00375   /* We try to join a server which is full */
    00376   _switch_mode_errorstr = STR_NETWORK_ERROR_SERVER_FULL;
    00377   DeleteWindowById(WC_NETWORK_STATUS_WINDOW, 0);
    00378
    00379   return NETWORK_RECV_STATUS_SERVER_FULL;
    00380 }
    00381
    00382 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_BANNED)
    00383 {
    00384   /* We try to join a server where we are banned */
    00385   _switch_mode_errorstr = STR_NETWORK_ERROR_SERVER_BANNED;
    00386   DeleteWindowById(WC_NETWORK_STATUS_WINDOW, 0);
    00387
    00388   return NETWORK_RECV_STATUS_SERVER_BANNED;
    00389 }
    00390
    00391 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_COMPANY_INFO)
    00392 {
    00393   byte company_info_version = p->Recv_uint8();
    00394
    00395   if (!MY_CLIENT->HasClientQuit() && company_info_version == NETWORK_COMPANY_INFO_VERSION) {
    00396     /* We have received all data... (there are no more packets coming) */
    00397     if (!p->Recv_bool()) return NETWORK_RECV_STATUS_CLOSE_QUERY;
    00398
    00399     CompanyID current = (Owner)p->Recv_uint8();
    00400     if (current >= MAX_COMPANIES) return NETWORK_RECV_STATUS_CLOSE_QUERY;
    00401
    00402     NetworkCompanyInfo *company_info = GetLobbyCompanyInfo(current);
    00403     if (company_info == NULL) return NETWORK_RECV_STATUS_CLOSE_QUERY;
    00404
    00405     p->Recv_string(company_info->company_name, sizeof(company_info->company_name));
    00406     company_info->inaugurated_year = p->Recv_uint32();
    00407     company_info->company_value    = p->Recv_uint64();
    00408     company_info->money            = p->Recv_uint64();
    00409     company_info->income           = p->Recv_uint64();
    00410     company_info->performance      = p->Recv_uint16();
    00411     company_info->use_password     = p->Recv_bool();
    00412     for (int i = 0; i < NETWORK_VEHICLE_TYPES; i++)
    00413       company_info->num_vehicle[i] = p->Recv_uint16();
    00414     for (int i = 0; i < NETWORK_STATION_TYPES; i++)
    00415       company_info->num_station[i] = p->Recv_uint16();
    00416     company_info->ai               = p->Recv_bool();
    00417
    00418     p->Recv_string(company_info->clients, sizeof(company_info->clients));
    00419
    00420     SetWindowDirty(WC_NETWORK_WINDOW, 0);
    00421
    00422     return NETWORK_RECV_STATUS_OKAY;
    00423   }
    00424
    00425   return NETWORK_RECV_STATUS_CLOSE_QUERY;
    00426 }
    00427
    00428 /* This packet contains info about the client (playas and name)
    00429  *  as client we save this in NetworkClientInfo, linked via 'client_id'
    00430  *  which is always an unique number on a server. */
    00431 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_CLIENT_INFO)
    00432 {
    00433   NetworkClientInfo *ci;
    00434   ClientID client_id = (ClientID)p->Recv_uint32();
    00435   CompanyID playas = (CompanyID)p->Recv_uint8();
    00436   char name[NETWORK_NAME_LENGTH];
    00437
    00438   p->Recv_string(name, sizeof(name));
    00439
    00440   if (MY_CLIENT->HasClientQuit()) return NETWORK_RECV_STATUS_CONN_LOST;
    00441
    00442   ci = NetworkFindClientInfoFromClientID(client_id);
    00443   if (ci != NULL) {
    00444     if (playas == ci->client_playas && strcmp(name, ci->client_name) != 0) {
    00445       /* Client name changed, display the change */
    00446       NetworkTextMessage(NETWORK_ACTION_NAME_CHANGE, CC_DEFAULT, false, ci->client_name, name);
    00447     } else if (playas != ci->client_playas) {
    00448       /* The client changed from client-player..
    00449        * Do not display that for now */
    00450     }
    00451
    00452     ci->client_playas = playas;
    00453     strecpy(ci->client_name, name, lastof(ci->client_name));
    00454
    00455     SetWindowDirty(WC_CLIENT_LIST, 0);
    00456
    00457     return NETWORK_RECV_STATUS_OKAY;
    00458   }
    00459
    00460   /* We don't have this client_id yet, find an empty client_id, and put the data there */
    00461   ci = new NetworkClientInfo(client_id);
    00462   ci->client_playas = playas;
    00463   if (client_id == _network_own_client_id) MY_CLIENT->SetInfo(ci);
    00464
    00465   strecpy(ci->client_name, name, lastof(ci->client_name));
    00466
    00467   SetWindowDirty(WC_CLIENT_LIST, 0);
    00468
    00469   return NETWORK_RECV_STATUS_OKAY;
    00470 }
    00471
    00472 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_ERROR)
    00473 {
    00474   NetworkErrorCode error = (NetworkErrorCode)p->Recv_uint8();
    00475
    00476   switch (error) {
    00477     /* We made an error in the protocol, and our connection is closed.... */
    00478     case NETWORK_ERROR_NOT_AUTHORIZED:
    00479     case NETWORK_ERROR_NOT_EXPECTED:
    00480     case NETWORK_ERROR_COMPANY_MISMATCH:
    00481       _switch_mode_errorstr = STR_NETWORK_ERROR_SERVER_ERROR;
    00482       break;
    00483     case NETWORK_ERROR_FULL:
    00484       _switch_mode_errorstr = STR_NETWORK_ERROR_SERVER_FULL;
    00485       break;
    00486     case NETWORK_ERROR_WRONG_REVISION:
    00487       _switch_mode_errorstr = STR_NETWORK_ERROR_WRONG_REVISION;
    00488       break;
    00489     case NETWORK_ERROR_WRONG_PASSWORD:
    00490       _switch_mode_errorstr = STR_NETWORK_ERROR_WRONG_PASSWORD;
    00491       break;
    00492     case NETWORK_ERROR_KICKED:
    00493       _switch_mode_errorstr = STR_NETWORK_ERROR_KICKED;
    00494       break;
    00495     case NETWORK_ERROR_CHEATER:
    00496       _switch_mode_errorstr = STR_NETWORK_ERROR_CHEATER;
    00497       break;
    00498     default:
    00499       _switch_mode_errorstr = STR_NETWORK_ERROR_LOSTCONNECTION;
    00500   }
    00501
    00502   DeleteWindowById(WC_NETWORK_STATUS_WINDOW, 0);
    00503
    00504   return NETWORK_RECV_STATUS_SERVER_ERROR;
    00505 }
    00506
    00507 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_CHECK_NEWGRFS)
    00508 {
    00509   uint grf_count = p->Recv_uint8();
    00510   NetworkRecvStatus ret = NETWORK_RECV_STATUS_OKAY;
    00511
    00512   /* Check all GRFs */
    00513   for (; grf_count > 0; grf_count--) {
    00514     GRFConfig c;
    00515     MY_CLIENT->Recv_GRFIdentifier(p, &c);
    00516
    00517     /* Check whether we know this GRF */
    00518     const GRFConfig *f = FindGRFConfig(c.grfid, c.md5sum);
    00519     if (f == NULL) {
    00520       /* We do not know this GRF, bail out of initialization */
    00521       char buf[sizeof(c.md5sum) * 2 + 1];
    00522       md5sumToString(buf, lastof(buf), c.md5sum);
    00523       DEBUG(grf, 0, "NewGRF %08X not found; checksum %s", BSWAP32(c.grfid), buf);
    00524       ret = NETWORK_RECV_STATUS_NEWGRF_MISMATCH;
    00525     }
    00526   }
    00527
    00528   if (ret == NETWORK_RECV_STATUS_OKAY) {
    00529     /* Start receiving the map */
    00530     return SEND_COMMAND(PACKET_CLIENT_NEWGRFS_CHECKED)();
    00531   }
    00532
    00533   /* NewGRF mismatch, bail out */
    00534   _switch_mode_errorstr = STR_NETWORK_ERROR_NEWGRF_MISMATCH;
    00535   return ret;
    00536 }
    00537
    00538 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_NEED_PASSWORD)
    00539 {
    00540   NetworkPasswordType type = (NetworkPasswordType)p->Recv_uint8();
    00541
    00542   const char *password = _network_join_server_password;
    00543
    00544   switch (type) {
    00545     case NETWORK_COMPANY_PASSWORD:
    00546       /* Initialize the password hash salting variables. */
    00547       _password_game_seed = p->Recv_uint32();
    00548       p->Recv_string(_password_server_id, sizeof(_password_server_id));
    00549       if (MY_CLIENT->HasClientQuit()) return NETWORK_RECV_STATUS_MALFORMED_PACKET;
    00550       password = _network_join_company_password;
    00551       /* FALL THROUGH */
    00552     case NETWORK_GAME_PASSWORD:
    00553       if (StrEmpty(password)) {
    00554         ShowNetworkNeedPassword(type);
    00555       } else {
    00556         return SEND_COMMAND(PACKET_CLIENT_PASSWORD)(type, password);
    00557       }
    00558       return NETWORK_RECV_STATUS_OKAY;
    00559
    00560     default: return NETWORK_RECV_STATUS_MALFORMED_PACKET;
    00561   }
    00562 }
    00563
    00564 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_WELCOME)
    00565 {
    00566   _network_own_client_id = (ClientID)p->Recv_uint32();
    00567
    00568   /* Initialize the password hash salting variables, even if they were previously. */
    00569   _password_game_seed = p->Recv_uint32();
    00570   p->Recv_string(_password_server_id, sizeof(_password_server_id));
    00571
    00572   /* Start receiving the map */
    00573   return SEND_COMMAND(PACKET_CLIENT_GETMAP)();
    00574 }
    00575
    00576 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_WAIT)
    00577 {
    00578   _network_join_status = NETWORK_JOIN_STATUS_WAITING;
    00579   _network_join_waiting = p->Recv_uint8();
    00580   SetWindowDirty(WC_NETWORK_STATUS_WINDOW, 0);
    00581
    00582   /* We are put on hold for receiving the map.. we need GUI for this ;) */
    00583   DEBUG(net, 1, "The server is currently busy sending the map to someone else, please wait..." );
    00584   DEBUG(net, 1, "There are %d clients in front of you", _network_join_waiting);
    00585
    00586   return NETWORK_RECV_STATUS_OKAY;
    00587 }
    00588
    00589 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_MAP)
    00590 {
    00591   static FILE *file_pointer;
    00592
    00593   byte maptype;
    00594
    00595   maptype = p->Recv_uint8();
    00596
    00597   if (MY_CLIENT->HasClientQuit()) return NETWORK_RECV_STATUS_CONN_LOST;
    00598
    00599   /* First packet, init some stuff */
    00600   if (maptype == MAP_PACKET_START) {
    00601     file_pointer = FioFOpenFile("network_client.tmp", "wb", AUTOSAVE_DIR);
    00602     if (file_pointer == NULL) {
    00603       _switch_mode_errorstr = STR_NETWORK_ERROR_SAVEGAMEERROR;
    00604       return NETWORK_RECV_STATUS_SAVEGAME;
    00605     }
    00606
    00607     _frame_counter = _frame_counter_server = _frame_counter_max = p->Recv_uint32();
    00608
    00609     _network_join_bytes = 0;
    00610     _network_join_bytes_total = p->Recv_uint32();
    00611
    00612     /* If the network connection has been closed due to loss of connection
    00613      * or when _network_join_kbytes_total is 0, the join status window will
    00614      * do a division by zero. When the connection is lost, we just return
    00615      * that. If kbytes_total is 0, the packet must be malformed as a
    00616      * savegame less than 1 kilobyte is practically impossible. */
    00617     if (MY_CLIENT->HasClientQuit()) return NETWORK_RECV_STATUS_CONN_LOST;
    00618     if (_network_join_bytes_total == 0) return NETWORK_RECV_STATUS_MALFORMED_PACKET;
    00619
    00620     _network_join_status = NETWORK_JOIN_STATUS_DOWNLOADING;
    00621     SetWindowDirty(WC_NETWORK_STATUS_WINDOW, 0);
    00622
    00623     /* The first packet does not contain any more data */
    00624     return NETWORK_RECV_STATUS_OKAY;
    00625   }
    00626
    00627   if (maptype == MAP_PACKET_NORMAL) {
    00628     /* We are still receiving data, put it to the file */
    00629     if (fwrite(p->buffer + p->pos, 1, p->size - p->pos, file_pointer) != (size_t)(p->size - p->pos)) {
    00630       _switch_mode_errorstr = STR_NETWORK_ERROR_SAVEGAMEERROR;
    00631       return NETWORK_RECV_STATUS_SAVEGAME;
    00632     }
    00633
    00634     _network_join_bytes = ftell(file_pointer);
    00635     SetWindowDirty(WC_NETWORK_STATUS_WINDOW, 0);
    00636   }
    00637
    00638   /* Check if this was the last packet */
    00639   if (maptype == MAP_PACKET_END) {
    00640     fclose(file_pointer);
    00641
    00642     _network_join_status = NETWORK_JOIN_STATUS_PROCESSING;
    00643     SetWindowDirty(WC_NETWORK_STATUS_WINDOW, 0);
    00644
    00645     /* The map is done downloading, load it */
    00646     if (!SafeSaveOrLoad("network_client.tmp", SL_LOAD, GM_NORMAL, AUTOSAVE_DIR)) {
    00647       DeleteWindowById(WC_NETWORK_STATUS_WINDOW, 0);
    00648       _switch_mode_errorstr = STR_NETWORK_ERROR_SAVEGAMEERROR;
    00649       return NETWORK_RECV_STATUS_SAVEGAME;
    00650     }
    00651     /* If the savegame has successfully loaded, ALL windows have been removed,
    00652      * only toolbar/statusbar and gamefield are visible */
    00653
    00654     /* Say we received the map and loaded it correctly! */
    00655     SEND_COMMAND(PACKET_CLIENT_MAP_OK)();
    00656
    00657     /* New company/spectator (invalid company) or company we want to join is not active
    00658      * Switch local company to spectator and await the server's judgement */
    00659     if (_network_join_as == COMPANY_NEW_COMPANY || !Company::IsValidID(_network_join_as)) {
    00660       SetLocalCompany(COMPANY_SPECTATOR);
    00661
    00662       if (_network_join_as != COMPANY_SPECTATOR) {
    00663         /* We have arrived and ready to start playing; send a command to make a new company;
    00664          * the server will give us a client-id and let us in */
    00665         _network_join_status = NETWORK_JOIN_STATUS_REGISTERING;
    00666         ShowJoinStatusWindow();
    00667         NetworkSend_Command(0, 0, 0, CMD_COMPANY_CTRL, NULL, NULL, _local_company);
    00668       }
    00669     } else {
    00670       /* take control over an existing company */
    00671       SetLocalCompany(_network_join_as);
    00672     }
    00673   }
    00674
    00675   return NETWORK_RECV_STATUS_OKAY;
    00676 }
    00677
    00678 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_FRAME)
    00679 {
    00680   _frame_counter_server = p->Recv_uint32();
    00681   _frame_counter_max = p->Recv_uint32();
    00682 #ifdef ENABLE_NETWORK_SYNC_EVERY_FRAME
    00683   /* Test if the server supports this option
    00684    *  and if we are at the frame the server is */
    00685   if (p->pos < p->size) {
    00686     _sync_frame = _frame_counter_server;
    00687     _sync_seed_1 = p->Recv_uint32();
    00688 #ifdef NETWORK_SEND_DOUBLE_SEED
    00689     _sync_seed_2 = p->Recv_uint32();
    00690 #endif
    00691   }
    00692 #endif
    00693   DEBUG(net, 5, "Received FRAME %d", _frame_counter_server);
    00694
    00695   /* Let the server know that we received this frame correctly
    00696    *  We do this only once per day, to save some bandwidth ;) */
    00697   if (!_network_first_time && last_ack_frame < _frame_counter) {
    00698     last_ack_frame = _frame_counter + DAY_TICKS;
    00699     DEBUG(net, 4, "Sent ACK at %d", _frame_counter);
    00700     SEND_COMMAND(PACKET_CLIENT_ACK)();
    00701   }
    00702
    00703   return NETWORK_RECV_STATUS_OKAY;
    00704 }
    00705
    00706 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_SYNC)
    00707 {
    00708   _sync_frame = p->Recv_uint32();
    00709   _sync_seed_1 = p->Recv_uint32();
    00710 #ifdef NETWORK_SEND_DOUBLE_SEED
    00711   _sync_seed_2 = p->Recv_uint32();
    00712 #endif
    00713
    00714   return NETWORK_RECV_STATUS_OKAY;
    00715 }
    00716
    00717 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_COMMAND)
    00718 {
    00719   CommandPacket cp;
    00720   const char *err = MY_CLIENT->Recv_Command(p, &cp);
    00721   cp.frame    = p->Recv_uint32();
    00722   cp.my_cmd   = p->Recv_bool();
    00723   cp.next     = NULL;
    00724
    00725   if (err != NULL) {
    00726     IConsolePrintF(CC_ERROR, "WARNING: %s from server, dropping...", err);
    00727     return NETWORK_RECV_STATUS_MALFORMED_PACKET;
    00728   }
    00729
    00730   /* The server did send us this command..
    00731    *  queue it in our own queue, so we can handle it in the upcoming frame! */
    00732   NetworkAddCommandQueue(cp);
    00733
    00734   return NETWORK_RECV_STATUS_OKAY;
    00735 }
    00736
    00737 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_CHAT)
    00738 {
    00739   char name[NETWORK_NAME_LENGTH], msg[NETWORK_CHAT_LENGTH];
    00740   const NetworkClientInfo *ci = NULL, *ci_to;
    00741
    00742   NetworkAction action = (NetworkAction)p->Recv_uint8();
    00743   ClientID client_id = (ClientID)p->Recv_uint32();
    00744   bool self_send = p->Recv_bool();
    00745   p->Recv_string(msg, NETWORK_CHAT_LENGTH);
    00746   int64 data = p->Recv_uint64();
    00747
    00748   ci_to = NetworkFindClientInfoFromClientID(client_id);
    00749   if (ci_to == NULL) return NETWORK_RECV_STATUS_OKAY;
    00750
    00751   /* Did we initiate the action locally? */
    00752   if (self_send) {
    00753     switch (action) {
    00754       case NETWORK_ACTION_CHAT_CLIENT:
    00755         /* For speaking to client we need the client-name */
    00756         snprintf(name, sizeof(name), "%s", ci_to->client_name);
    00757         ci = NetworkFindClientInfoFromClientID(_network_own_client_id);
    00758         break;
    00759
    00760       /* For speaking to company or giving money, we need the company-name */
    00761       case NETWORK_ACTION_GIVE_MONEY:
    00762         if (!Company::IsValidID(ci_to->client_playas)) return NETWORK_RECV_STATUS_OKAY;
    00763         /* fallthrough */
    00764       case NETWORK_ACTION_CHAT_COMPANY: {
    00765         StringID str = Company::IsValidID(ci_to->client_playas) ? STR_COMPANY_NAME : STR_NETWORK_SPECTATORS;
    00766         SetDParam(0, ci_to->client_playas);
    00767
    00768         GetString(name, str, lastof(name));
    00769         ci = NetworkFindClientInfoFromClientID(_network_own_client_id);
    00770       } break;
    00771
    00772       default: return NETWORK_RECV_STATUS_MALFORMED_PACKET;
    00773     }
    00774   } else {
    00775     /* Display message from somebody else */
    00776     snprintf(name, sizeof(name), "%s", ci_to->client_name);
    00777     ci = ci_to;
    00778   }
    00779
    00780   if (ci != NULL) {
    00781     NetworkTextMessage(action, (ConsoleColour)GetDrawStringCompanyColour(ci->client_playas), self_send, name, msg, data);
    00782   }
    00783   return NETWORK_RECV_STATUS_OKAY;
    00784 }
    00785
    00786 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_ERROR_QUIT)
    00787 {
    00788   ClientID client_id = (ClientID)p->Recv_uint32();
    00789
    00790   NetworkClientInfo *ci = NetworkFindClientInfoFromClientID(client_id);
    00791   if (ci != NULL) {
    00792     NetworkTextMessage(NETWORK_ACTION_LEAVE, CC_DEFAULT, false, ci->client_name, NULL, GetNetworkErrorMsg((NetworkErrorCode)p->Recv_uint8()));
    00793     delete ci;
    00794   }
    00795
    00796   SetWindowDirty(WC_CLIENT_LIST, 0);
    00797
    00798   return NETWORK_RECV_STATUS_OKAY;
    00799 }
    00800
    00801 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_QUIT)
    00802 {
    00803   NetworkClientInfo *ci;
    00804
    00805   ClientID client_id = (ClientID)p->Recv_uint32();
    00806
    00807   ci = NetworkFindClientInfoFromClientID(client_id);
    00808   if (ci != NULL) {
    00809     NetworkTextMessage(NETWORK_ACTION_LEAVE, CC_DEFAULT, false, ci->client_name, NULL, STR_NETWORK_MESSAGE_CLIENT_LEAVING);
    00810     delete ci;
    00811   } else {
    00812     DEBUG(net, 0, "Unknown client (%d) is leaving the game", client_id);
    00813   }
    00814
    00815   SetWindowDirty(WC_CLIENT_LIST, 0);
    00816
    00817   /* If we come here it means we could not locate the client.. strange :s */
    00818   return NETWORK_RECV_STATUS_OKAY;
    00819 }
    00820
    00821 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_JOIN)
    00822 {
    00823   ClientID client_id = (ClientID)p->Recv_uint32();
    00824
    00825   NetworkClientInfo *ci = NetworkFindClientInfoFromClientID(client_id);
    00826   if (ci != NULL) {
    00827     NetworkTextMessage(NETWORK_ACTION_JOIN, CC_DEFAULT, false, ci->client_name);
    00828   }
    00829
    00830   SetWindowDirty(WC_CLIENT_LIST, 0);
    00831
    00832   return NETWORK_RECV_STATUS_OKAY;
    00833 }
    00834
    00835 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_SHUTDOWN)
    00836 {
    00837   _switch_mode_errorstr = STR_NETWORK_MESSAGE_SERVER_SHUTDOWN;
    00838
    00839   return NETWORK_RECV_STATUS_SERVER_ERROR;
    00840 }
    00841
    00842 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_NEWGAME)
    00843 {
    00844   /* To trottle the reconnects a bit, every clients waits
    00845    *  his _local_company value before reconnecting
    00846    * COMPANY_SPECTATOR is currently 255, so to avoid long wait periods
    00847    *  set the max to 10. */
    00848   _network_reconnect = min(_local_company + 1, 10);
    00849   _switch_mode_errorstr = STR_NETWORK_MESSAGE_SERVER_REBOOT;
    00850
    00851   return NETWORK_RECV_STATUS_SERVER_ERROR;
    00852 }
    00853
    00854 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_RCON)
    00855 {
    00856   char rcon_out[NETWORK_RCONCOMMAND_LENGTH];
    00857
    00858   ConsoleColour colour_code = (ConsoleColour)p->Recv_uint16();
    00859   p->Recv_string(rcon_out, sizeof(rcon_out));
    00860
    00861   IConsolePrint(colour_code, rcon_out);
    00862
    00863   return NETWORK_RECV_STATUS_OKAY;
    00864 }
    00865
    00866 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_MOVE)
    00867 {
    00868   /* Nothing more in this packet... */
    00869   ClientID client_id   = (ClientID)p->Recv_uint32();
    00870   CompanyID company_id = (CompanyID)p->Recv_uint8();
    00871
    00872   if (client_id == 0) {
    00873     /* definitely an invalid client id, debug message and do nothing. */
    00874     DEBUG(net, 0, "[move] received invalid client index = 0");
    00875     return NETWORK_RECV_STATUS_MALFORMED_PACKET;
    00876   }
    00877
    00878   const NetworkClientInfo *ci = NetworkFindClientInfoFromClientID(client_id);
    00879   /* Just make sure we do not try to use a client_index that does not exist */
    00880   if (ci == NULL) return NETWORK_RECV_STATUS_OKAY;
    00881
    00882   /* if not valid player, force spectator, else check player exists */
    00883   if (!Company::IsValidID(company_id)) company_id = COMPANY_SPECTATOR;
    00884
    00885   if (client_id == _network_own_client_id) {
    00886     SetLocalCompany(company_id);
    00887   }
    00888
    00889   return NETWORK_RECV_STATUS_OKAY;
    00890 }
    00891
    00892 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_CONFIG_UPDATE)
    00893 {
    00894   _network_server_max_companies = p->Recv_uint8();
    00895   _network_server_max_spectators = p->Recv_uint8();
    00896
    00897   return NETWORK_RECV_STATUS_OKAY;
    00898 }
    00899
    00900 DEF_CLIENT_RECEIVE_COMMAND(PACKET_SERVER_COMPANY_UPDATE)
    00901 {
    00902   _network_company_passworded = p->Recv_uint16();
    00903   SetWindowClassesDirty(WC_COMPANY);
    00904
    00905   return NETWORK_RECV_STATUS_OKAY;
    00906 }
    00907
    00908
    00909 /* The layout for the receive-functions by the client */
    00910 typedef NetworkRecvStatus NetworkClientPacket(Packet *p);
    00911
    00912 /* This array matches PacketType. At an incoming
    00913  *  packet it is matches against this array
    00914  *  and that way the right function to handle that
    00915  *  packet is found. */
    00916 static NetworkClientPacket * const _network_client_packet[] = {
    00917   RECEIVE_COMMAND(PACKET_SERVER_FULL),
    00918   RECEIVE_COMMAND(PACKET_SERVER_BANNED),
    00919   NULL, // PACKET_CLIENT_JOIN,
    00920   RECEIVE_COMMAND(PACKET_SERVER_ERROR),
    00921   NULL, // PACKET_CLIENT_COMPANY_INFO,
    00922   RECEIVE_COMMAND(PACKET_SERVER_COMPANY_INFO),
    00923   RECEIVE_COMMAND(PACKET_SERVER_CLIENT_INFO),
    00924   RECEIVE_COMMAND(PACKET_SERVER_NEED_PASSWORD),
    00925   NULL, // PACKET_CLIENT_PASSWORD,
    00926   RECEIVE_COMMAND(PACKET_SERVER_WELCOME),
    00927   NULL, // PACKET_CLIENT_GETMAP,
    00928   RECEIVE_COMMAND(PACKET_SERVER_WAIT),
    00929   RECEIVE_COMMAND(PACKET_SERVER_MAP),
    00930   NULL, // PACKET_CLIENT_MAP_OK,
    00931   RECEIVE_COMMAND(PACKET_SERVER_JOIN),
    00932   RECEIVE_COMMAND(PACKET_SERVER_FRAME),
    00933   RECEIVE_COMMAND(PACKET_SERVER_SYNC),
    00934   NULL, // PACKET_CLIENT_ACK,
    00935   NULL, // PACKET_CLIENT_COMMAND,
    00936   RECEIVE_COMMAND(PACKET_SERVER_COMMAND),
    00937   NULL, // PACKET_CLIENT_CHAT,
    00938   RECEIVE_COMMAND(PACKET_SERVER_CHAT),
    00939   NULL, // PACKET_CLIENT_SET_PASSWORD,
    00940   NULL, // PACKET_CLIENT_SET_NAME,
    00941   NULL, // PACKET_CLIENT_QUIT,
    00942   NULL, // PACKET_CLIENT_ERROR,
    00943   RECEIVE_COMMAND(PACKET_SERVER_QUIT),
    00944   RECEIVE_COMMAND(PACKET_SERVER_ERROR_QUIT),
    00945   RECEIVE_COMMAND(PACKET_SERVER_SHUTDOWN),
    00946   RECEIVE_COMMAND(PACKET_SERVER_NEWGAME),
    00947   RECEIVE_COMMAND(PACKET_SERVER_RCON),
    00948   NULL, // PACKET_CLIENT_RCON,
    00949   RECEIVE_COMMAND(PACKET_SERVER_CHECK_NEWGRFS),
    00950   NULL, // PACKET_CLIENT_NEWGRFS_CHECKED,
    00951   RECEIVE_COMMAND(PACKET_SERVER_MOVE),
    00952   NULL, // PACKET_CLIENT_MOVE
    00953   RECEIVE_COMMAND(PACKET_SERVER_COMPANY_UPDATE),
    00954   RECEIVE_COMMAND(PACKET_SERVER_CONFIG_UPDATE),
    00955 };
    00956
    00957 /* If this fails, check the array above with network_data.h */
    00958 assert_compile(lengthof(_network_client_packet) == PACKET_END);
    00959
    00960 /* Is called after a client is connected to the server */
    00961 void NetworkClient_Connected()
    00962 {
    00963   /* Set the frame-counter to 0 so nothing happens till we are ready */
    00964   _frame_counter = 0;
    00965   _frame_counter_server = 0;
    00966   last_ack_frame = 0;
    00967   /* Request the game-info */
    00968   SEND_COMMAND(PACKET_CLIENT_JOIN)();
    00969 }
    00970
    00971 /* Reads the packets from the socket-stream, if available */
    00972 NetworkRecvStatus NetworkClient_ReadPackets(NetworkClientSocket *cs)
    00973 {
    00974   Packet *p;
    00975   NetworkRecvStatus res = NETWORK_RECV_STATUS_OKAY;
    00976
    00977   while (res == NETWORK_RECV_STATUS_OKAY && (p = cs->Recv_Packet()) != NULL) {
    00978     byte type = p->Recv_uint8();
    00979     if (type < PACKET_END && _network_client_packet[type] != NULL && !MY_CLIENT->HasClientQuit()) {
    00980       res = _network_client_packet[type](p);
    00981     } else {
    00982       res = NETWORK_RECV_STATUS_MALFORMED_PACKET;
    00983       DEBUG(net, 0, "[client] received invalid packet type %d", type);
    00984     }
    00985
    00986     delete p;
    00987   }
    00988
    00989   return res;
    00990 }
    00991
    00992 void NetworkClientSendRcon(const char *password, const char *command)
    00993 {
    00994   SEND_COMMAND(PACKET_CLIENT_RCON)(password, command);
    00995 }
    00996
    01003 void NetworkClientRequestMove(CompanyID company_id, const char *pass)
    01004 {
    01005   SEND_COMMAND(PACKET_CLIENT_MOVE)(company_id, pass);
    01006 }
    01007
    01008 void NetworkUpdateClientName()
    01009 {
    01010   NetworkClientInfo *ci = NetworkFindClientInfoFromClientID(_network_own_client_id);
    01011
    01012   if (ci == NULL) return;
    01013
    01014   /* Don't change the name if it is the same as the old name */
    01015   if (strcmp(ci->client_name, _settings_client.network.client_name) != 0) {
    01016     if (!_network_server) {
    01017       SEND_COMMAND(PACKET_CLIENT_SET_NAME)(_settings_client.network.client_name);
    01018     } else {
    01019       if (NetworkFindName(_settings_client.network.client_name)) {
    01020         NetworkTextMessage(NETWORK_ACTION_NAME_CHANGE, CC_DEFAULT, false, ci->client_name, _settings_client.network.client_name);
    01021         strecpy(ci->client_name, _settings_client.network.client_name, lastof(ci->client_name));
    01022         NetworkUpdateClientInfo(CLIENT_ID_SERVER);
    01023       }
    01024     }
    01025   }
    01026 }
    01027
    01028 void NetworkClientSendChat(NetworkAction action, DestType type, int dest, const char *msg, int64 data)
    01029 {
    01030   SEND_COMMAND(PACKET_CLIENT_CHAT)(action, type, dest, msg, data);
    01031 }
    01032
    01033 static void NetworkClientSetPassword(const char *password)
    01034 {
    01035   SEND_COMMAND(PACKET_CLIENT_SET_PASSWORD)(password);
    01036 }
    01037
    01043 bool NetworkClientPreferTeamChat(const NetworkClientInfo *cio)
    01044 {
    01045   /* Only companies actually playing can speak to team. Eg spectators cannot */
    01046   if (!_settings_client.gui.prefer_teamchat || !Company::IsValidID(cio->client_playas)) return false;
    01047
    01048   const NetworkClientInfo *ci;
    01049   FOR_ALL_CLIENT_INFOS(ci) {
    01050     if (ci->client_playas == cio->client_playas && ci != cio) return true;
    01051   }
    01052
    01053   return false;
    01054 }
    01055
    01061 const char *NetworkChangeCompanyPassword(const char *password)
    01062 {
    01063   if (strcmp(password, "*") == 0) password = "";
    01064
    01065   if (!_network_server) {
    01066     NetworkClientSetPassword(password);
    01067   } else {
    01068     HashCurrentCompanyPassword(password);
    01069   }
    01070
    01071   return password;
    01072 }
    01073
    01078 bool NetworkMaxCompaniesReached()
    01079 {
    01080   return Company::GetNumItems() >= (_network_server ? _settings_client.network.max_companies : _network_server_max_companies);
    01081 }
    01082
    01087 bool NetworkMaxSpectatorsReached()
    01088 {
    01089   return NetworkSpectatorCount() >= (_network_server ? _settings_client.network.max_spectators : _network_server_max_spectators);
    01090 }
    01091
    01095 void NetworkPrintClients()
    01096 {
    01097   NetworkClientInfo *ci;
    01098   FOR_ALL_CLIENT_INFOS(ci) {
    01099     IConsolePrintF(CC_INFO, "Client #%1d  name: '%s'  company: %1d  IP: %s",
    01100         ci->client_id,
    01101         ci->client_name,
    01102         ci->client_playas + (Company::IsValidID(ci->client_playas) ? 1 : 0),
    01103         GetClientIP(ci));
    01104   }
    01105 }
    01106
    01107 #endif /* ENABLE_NETWORK */