Sha256 levGetFileHash(LEVEL_DATASET *level) { if (level->realFileName != NULL && level->realFileHash.isZero()) { level->realFileHash = findHashOfFile(level->realFileName); debug(LOG_WZ, "Hash of file \"%s\" is %s.", level->realFileName, level->realFileHash.toString().c_str()); } return level->realFileHash; }
// //////////////////////////////////////////////////////////////////////////// // options for a game. (usually recvd in frontend) void recvOptions(NETQUEUE queue) { unsigned int i; debug(LOG_NET, "Receiving options from host"); NETbeginDecode(queue, NET_OPTIONS); // Get general information about the game NETuint8_t(&game.type); NETstring(game.map, 128); NETbin(game.hash.bytes, game.hash.Bytes); uint32_t modHashesSize; NETuint32_t(&modHashesSize); ASSERT_OR_RETURN(, modHashesSize < 1000000, "Way too many mods %u", modHashesSize); game.modHashes.resize(modHashesSize); for (auto &hash : game.modHashes) { NETbin(hash.bytes, hash.Bytes); } NETuint8_t(&game.maxPlayers); NETstring(game.name, 128); NETuint32_t(&game.power); NETuint8_t(&game.base); NETuint8_t(&game.alliance); NETbool(&game.scavengers); NETbool(&game.isMapMod); for (i = 0; i < MAX_PLAYERS; i++) { NETuint8_t(&game.skDiff[i]); } // Send the list of who is still joining for (i = 0; i < MAX_PLAYERS; i++) { NETbool(&ingame.JoiningInProgress[i]); } // Alliances for (i = 0; i < MAX_PLAYERS; i++) { unsigned int j; for (j = 0; j < MAX_PLAYERS; j++) { NETuint8_t(&alliances[i][j]); } } netPlayersUpdated = true; // Free any structure limits we may have in-place if (ingame.numStructureLimits) { ingame.numStructureLimits = 0; free(ingame.pStructureLimits); ingame.pStructureLimits = NULL; } // Get the number of structure limits to expect NETuint32_t(&ingame.numStructureLimits); debug(LOG_NET, "Host is sending us %u structure limits", ingame.numStructureLimits); // If there were any changes allocate memory for them if (ingame.numStructureLimits) { ingame.pStructureLimits = (MULTISTRUCTLIMITS *)malloc(ingame.numStructureLimits * sizeof(MULTISTRUCTLIMITS)); } for (i = 0; i < ingame.numStructureLimits; i++) { NETuint32_t(&ingame.pStructureLimits[i].id); NETuint32_t(&ingame.pStructureLimits[i].limit); } NETuint8_t(&ingame.flags); NETend(); // Do the skirmish slider settings if they are up for (i = 0; i < MAX_PLAYERS; i++) { if (widgGetFromID(psWScreen, MULTIOP_SKSLIDE + i)) { widgSetSliderPos(psWScreen, MULTIOP_SKSLIDE + i, game.skDiff[i]); } } debug(LOG_INFO, "Rebuilding map list"); // clear out the old level list. levShutDown(); levInitialise(); rebuildSearchPath(mod_multiplay, true); // MUST rebuild search path for the new maps we just got! buildMapList(); bool haveData = true; auto requestFile = [&haveData](Sha256 &hash, char const *filename) { if (std::any_of(NetPlay.wzFiles.begin(), NetPlay.wzFiles.end(), [&hash](WZFile const &file) { return file.hash == hash; })) { debug(LOG_INFO, "Already requested file, continue waiting."); haveData = false; return false; // Downloading the file already } if (!PHYSFS_exists(filename)) { debug(LOG_INFO, "Creating new file %s", filename); } else if (findHashOfFile(filename) != hash) { debug(LOG_INFO, "Overwriting old incomplete or corrupt file %s", filename); } else { return false; // Have the file already. } NetPlay.wzFiles.emplace_back(PHYSFS_openWrite(filename), hash); // Request the map/mod from the host NETbeginEncode(NETnetQueue(NET_HOST_ONLY), NET_FILE_REQUESTED); NETbin(hash.bytes, hash.Bytes); NETend(); haveData = false; return true; // Starting download now. }; LEVEL_DATASET *mapData = levFindDataSet(game.map, &game.hash); // See if we have the map or not if (mapData == nullptr) { char mapName[256]; sstrcpy(mapName, game.map); removeWildcards(mapName); if (strlen(mapName) >= 3 && mapName[strlen(mapName) - 3] == '-' && mapName[strlen(mapName) - 2] == 'T' && unsigned(mapName[strlen(mapName) - 1] - '1') < 3) { mapName[strlen(mapName) - 3] = '\0'; // Cut off "-T1", "-T2" or "-T3". } char filename[256]; ssprintf(filename, "maps/%dc-%s-%s.wz", game.maxPlayers, mapName, game.hash.toString().c_str()); // Wonder whether game.maxPlayers is initialised already? if (requestFile(game.hash, filename)) { debug(LOG_INFO, "Map was not found, requesting map %s from host, type %d", game.map, game.isMapMod); addConsoleMessage("MAP REQUESTED!", DEFAULT_JUSTIFY, SYSTEM_MESSAGE); } else { debug(LOG_FATAL, "Can't load map %s, even though we downloaded %s", game.map, filename); abort(); } } for (Sha256 &hash : game.modHashes) { char filename[256]; ssprintf(filename, "mods/downloads/%s", hash.toString().c_str()); if (requestFile(hash, filename)) { debug(LOG_INFO, "Mod was not found, requesting mod %s from host", hash.toString().c_str()); addConsoleMessage("MOD REQUESTED!", DEFAULT_JUSTIFY, SYSTEM_MESSAGE); } } if (mapData && CheckForMod(mapData->realFileName)) { char const *str = game.isMapMod ? _("Warning, this is a map-mod, it could alter normal gameplay.") : _("Warning, HOST has altered the game code, and can't be trusted!"); addConsoleMessage(str, DEFAULT_JUSTIFY, NOTIFY_MESSAGE); game.isMapMod = true; } if (mapData) { loadMapPreview(false); } }