1 /*

     2  * Hedgewars, a free turn based strategy game

     3  * Copyright (c) 2006-2008 Igor Ulyanov <iulyanov@gmail.com>

     4  * Copyright (c) 2004-2012 Andrey Korotaev <unC0Rr@gmail.com>

     5  * Copyright (c) 2012 Simeon Maxein <smaxein@googlemail.com>

     6  *

     7  * This program is free software; you can redistribute it and/or modify

     8  * it under the terms of the GNU General Public License as published by

     9  * the Free Software Foundation; version 2 of the License

    10  *

    11  * This program is distributed in the hope that it will be useful,

    12  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    14  * GNU General Public License for more details.

    15  *

    16  * You should have received a copy of the GNU General Public License

    17  * along with this program; if not, write to the Free Software

    18  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA

    19  */

    20 

    21 #include "netconn_internal.h"

    22 #include "netprotocol.h"

    23 #include "../util/logging.h"

    24 #include "../util/util.h"

    25 #include "../md5/md5.h"

    26 #include "../base64/base64.h"

    27 #include "../model/mapcfg.h"

    28 

    29 #include <stdlib.h>

    30 #include <string.h>

    31 #include <errno.h>

    32 #include <ctype.h>

    33 

    34 flib_netconn *flib_netconn_create(const char *playerName, const char *dataDirPath, const char *host, int port) {

    35 	flib_netconn *result = NULL;

    36 	if(!log_badargs_if4(playerName==NULL, host==NULL, port<1, port>65535)) {

    37 		flib_netconn *newConn = flib_calloc(1, sizeof(flib_netconn));

    38 		if(newConn) {

    39 			newConn->netBase = flib_netbase_create(host, port);

    40 			newConn->playerName = flib_strdupnull(playerName);

    41 			newConn->dataDirPath = flib_strdupnull(dataDirPath);

    42 

    43 			newConn->netconnState = NETCONN_STATE_CONNECTING;

    44 

    45 			newConn->isChief = false;

    46 			newConn->map = flib_map_create_named("", "NoSuchMap");

    47 			newConn->pendingTeamlist.teamCount = 0;

    48 			newConn->pendingTeamlist.teams = NULL;

    49 			newConn->teamlist.teamCount = 0;

    50 			newConn->teamlist.teams = NULL;

    51 			newConn->scheme = NULL;

    52 			newConn->style = NULL;

    53 			newConn->weaponset = NULL;

    54 

    55 			newConn->running = false;

    56 			newConn->destroyRequested = false;

    57 			netconn_clearCallbacks(newConn);

    58 			if(newConn->netBase && newConn->playerName && newConn->dataDirPath && newConn->map) {

    59 				result = newConn;

    60 				newConn = NULL;

    61 			}

    62 		}

    63 		flib_netconn_destroy(newConn);

    64 	}

    65 	return result;

    66 }

    67 

    68 void flib_netconn_destroy(flib_netconn *conn) {

    69 	if(conn) {

    70 		if(conn->running) {

    71 			/*

    72 			 * The function was called from a callback, so the tick function is still running

    73 			 * and we delay the actual destruction. We ensure no further callbacks will be

    74 			 * sent to prevent surprises.

    75 			 */

    76 			netconn_clearCallbacks(conn);

    77 			conn->destroyRequested = true;

    78 		} else {

    79 			flib_netbase_destroy(conn->netBase);

    80 			free(conn->playerName);

    81 			free(conn->dataDirPath);

    82 

    83 			flib_map_destroy(conn->map);

    84 			flib_teamlist_clear(&conn->pendingTeamlist);

    85 			flib_teamlist_clear(&conn->teamlist);

    86 			flib_scheme_destroy(conn->scheme);

    87 			free(conn->style);

    88 			flib_weaponset_destroy(conn->weaponset);

    89 

    90 			free(conn);

    91 		}

    92 	}

    93 }

    94 

    95 bool flib_netconn_is_chief(flib_netconn *conn) {

    96 	if(!log_badargs_if(conn==NULL) && conn->netconnState==NETCONN_STATE_ROOM) {

    97 		return conn->isChief;

    98 	}

    99 	return false;

   100 }

   101 

   102 const char *flib_netconn_get_playername(flib_netconn *conn) {

   103 	if(!log_badargs_if(conn==NULL)) {

   104 		return conn->playerName;

   105 	}

   106 	return NULL;

   107 }

   108 

   109 void netconn_leaveRoom(flib_netconn *conn) {

   110 	conn->netconnState = NETCONN_STATE_LOBBY;

   111 	conn->isChief = false;

   112 	flib_map_destroy(conn->map);

   113 	conn->map = flib_map_create_named("", "NoSuchMap");

   114 	flib_teamlist_clear(&conn->pendingTeamlist);

   115 	flib_teamlist_clear(&conn->teamlist);

   116 	flib_scheme_destroy(conn->scheme);

   117 	conn->scheme = NULL;

   118 	free(conn->style);

   119 	conn->style = NULL;

   120 	flib_weaponset_destroy(conn->weaponset);

   121 	conn->weaponset = NULL;

   122 }

   123 

   124 void netconn_setMap(flib_netconn *conn, const flib_map *map) {

   125 	flib_map *copy = flib_map_copy(map);

   126 	if(copy) {

   127 		flib_map_destroy(conn->map);

   128 		conn->map = copy;

   129 	}

   130 }

   131 

   132 void netconn_setWeaponset(flib_netconn *conn, const flib_weaponset *weaponset) {

   133 	flib_weaponset *copy = flib_weaponset_copy(weaponset);

   134 	if(copy) {

   135 		flib_weaponset_destroy(conn->weaponset);

   136 		conn->weaponset = copy;

   137 	}

   138 }

   139 

   140 void netconn_setScript(flib_netconn *conn, const char *script) {

   141 	char *copy = flib_strdupnull(script);

   142 	if(copy) {

   143 		free(conn->style);

   144 		conn->style = copy;

   145 	}

   146 }

   147 

   148 void netconn_setScheme(flib_netconn *conn, const flib_scheme *scheme) {

   149 	flib_scheme *copy = flib_scheme_copy(scheme);

   150 	if(copy) {

   151 		flib_scheme_destroy(conn->scheme);

   152 		conn->scheme = copy;

   153 	}

   154 }

   155 

   156 flib_gamesetup *flib_netconn_create_gamesetup(flib_netconn *conn) {

   157 	flib_gamesetup *result = NULL;

   158 	if(!log_badargs_if(conn==NULL)) {

   159 		if(conn->teamlist.teamCount==0 || !conn->scheme || !conn->weaponset) {

   160 			flib_log_e("Incomplete room state");

   161 		} else {

   162 			flib_gamesetup stackSetup = {0};

   163 			stackSetup.gamescheme = conn->scheme;

   164 			stackSetup.map = conn->map;

   165 			stackSetup.style = conn->style;

   166 			stackSetup.teamlist = &conn->teamlist;

   167 			result = flib_gamesetup_copy(&stackSetup);

   168 			if(result) {

   169 				bool error = false;

   170 				for(int i=0; i<result->teamlist->teamCount; i++) {

   171 					if(flib_team_set_weaponset(result->teamlist->teams[i], conn->weaponset)) {

   172 						error = true;

   173 					}

   174 					flib_team_set_health(result->teamlist->teams[i], flib_scheme_get_setting(conn->scheme, "health", 100));

   175 				}

   176 				if(result->map->mapgen == MAPGEN_NAMED && result->map->name) {

   177 					flib_mapcfg mapcfg;

   178 					if(!flib_mapcfg_read(conn->dataDirPath, result->map->name, &mapcfg)) {

   179 						free(result->map->theme);

   180 						result->map->theme = flib_strdupnull(mapcfg.theme);

   181 						if(!result->map->theme) {

   182 							error = true;

   183 						}

   184 					} else {

   185 						flib_log_e("Unable to read map config for map %s", result->map->name);

   186 					}

   187 				}

   188 				if(error) {

   189 					flib_gamesetup_destroy(result);

   190 					result = NULL;

   191 				}

   192 			}

   193 		}

   194 	}

   195 	return result;

   196 }

   197 

   198 static void flib_netconn_wrappedtick(flib_netconn *conn) {

   199 	flib_netmsg *netmsg;

   200 	flib_netbase *net = conn->netBase;

   201 	bool exit = false;

   202 

   203 	while(!exit && !conn->destroyRequested && (netmsg=flib_netbase_recv_message(conn->netBase))) {

   204 		if(netmsg->partCount==0) {

   205 			flib_log_w("Empty server message");

   206 			continue;

   207 		}

   208 

   209 		if(flib_log_isActive(FLIB_LOGLEVEL_DEBUG)) {

   210 			char *buf = flib_join(netmsg->parts, netmsg->partCount, "|");

   211 			if(buf) {

   212 				flib_log_d("[Net In]%s", buf);

   213 			}

   214 			free(buf);

   215 		}

   216 

   217 		const char *cmd = netmsg->parts[0];

   218 

   219 	    if (!strcmp(cmd, "NICK") && netmsg->partCount>=2) {

   220 	    	if(netmsg->partCount<2) {

   221 	    		flib_log_w("Net: Malformed NICK message");

   222 	    	} else {

   223 	    		char *nick = flib_strdupnull(netmsg->parts[1]);

   224 	    		if(nick) {

   225 					free(conn->playerName);

   226 					conn->playerName = nick;

   227 	    		} else {

   228 					conn->netconnState = NETCONN_STATE_DISCONNECTED;

   229 					conn->onDisconnectedCb(conn->onDisconnectedCtx, NETCONN_DISCONNECT_INTERNAL_ERROR, "Out of memory");

   230 					exit = true;

   231 				}

   232 	    	}

   233 	    } else if (!strcmp(cmd, "PROTO")) {

   234 	        // The server just echoes this back apparently

   235 		} else if (!strcmp(cmd, "ERROR")) {

   236 			if (netmsg->partCount >= 2) {

   237 				conn->onMessageCb(conn->onMessageCtx, NETCONN_MSG_TYPE_ERROR, netmsg->parts[1]);

   238 			} else {

   239 				conn->onMessageCb(conn->onMessageCtx, NETCONN_MSG_TYPE_ERROR, "Unknown Error");

   240 			}

   241 		} else if(!strcmp(cmd, "WARNING")) {

   242 			if (netmsg->partCount >= 2) {

   243 				conn->onMessageCb(conn->onMessageCtx, NETCONN_MSG_TYPE_WARNING, netmsg->parts[1]);

   244 			} else {

   245 				conn->onMessageCb(conn->onMessageCtx, NETCONN_MSG_TYPE_WARNING, "Unknown Warning");

   246 			}

   247 	    } else if(!strcmp(cmd, "CONNECTED")) {

   248 			if(netmsg->partCount<3 || atol(netmsg->parts[2])<MIN_SERVER_VERSION) {

   249 				flib_log_w("Net: Server too old");

   250 				flib_netbase_sendf(net, "%s\n%s\n\n", "QUIT", "Server too old");

   251 				conn->netconnState = NETCONN_STATE_DISCONNECTED;

   252 				conn->onDisconnectedCb(conn->onDisconnectedCtx, NETCONN_DISCONNECT_SERVER_TOO_OLD, "Server too old");

   253 				exit = true;

   254 			} else {

   255 				flib_netbase_sendf(net, "%s\n%s\n\n", "NICK", conn->playerName);

   256 				flib_netbase_sendf(net, "%s\n%i\n\n", "PROTO", (int)PROTOCOL_VERSION);

   257 			}

   258 		} else if(!strcmp(cmd, "PING")) {

   259 	        if (netmsg->partCount > 1) {

   260 	        	flib_netbase_sendf(net, "%s\n%s\n\n", "PONG", netmsg->parts[1]);

   261 	        } else {

   262 	        	flib_netbase_sendf(net, "%s\n\n", "PONG");

   263 	        }

   264 	    } else if(!strcmp(cmd, "ROOMS")) {

   265 	        if(netmsg->partCount % 8 != 1) {

   266 	        	flib_log_w("Net: Malformed ROOMS message");

   267 	        } else {

   268 	        	int roomCount = netmsg->partCount/8;

   269 	        	flib_room **rooms = flib_room_array_from_netmsg(netmsg->parts+1, roomCount);

   270 	        	if(rooms) {

   271 	        		conn->onRoomlistCb(conn->onRoomlistCtx, (const flib_room**)rooms, roomCount);

   272 	        		for(int i=0; i<roomCount; i++) {

   273 	        			flib_room_destroy(rooms[i]);

   274 	        		}

   275 	        		free(rooms);

   276 	        	}

   277 	        }

   278 	    } else if (!strcmp(cmd, "SERVER_MESSAGE")) {

   279 	        if(netmsg->partCount < 2) {

   280 	        	flib_log_w("Net: Empty SERVERMESSAGE message");

   281 	        } else {

   282 	        	conn->onMessageCb(conn->onMessageCtx, NETCONN_MSG_TYPE_SERVERMESSAGE, netmsg->parts[1]);

   283 	        }

   284 	    } else if (!strcmp(cmd, "CHAT")) {

   285 	        if(netmsg->partCount < 3) {

   286 	        	flib_log_w("Net: Empty CHAT message");

   287 	        } else {

   288 	        	conn->onChatCb(conn->onChatCtx, netmsg->parts[1], netmsg->parts[2]);

   289 	        }

   290 	    } else if (!strcmp(cmd, "INFO")) {

   291 	        if(netmsg->partCount < 5) {

   292 	        	flib_log_w("Net: Malformed INFO message");

   293 	        } else {

   294 	        	char *joined = flib_join(netmsg->parts+1, netmsg->partCount-1, "\n");

   295 	        	if(joined) {

   296 	        		conn->onMessageCb(conn->onMessageCtx, NETCONN_MSG_TYPE_PLAYERINFO, joined);

   297 	        	}

   298 	        	free(joined);

   299 	        }

   300 	    } else if(!strcmp(cmd, "SERVER_VARS")) {

   301 	    	for(int offset=1; offset+2<netmsg->partCount; offset+=2) {

   302 	    		conn->onServerVarCb(conn->onServerVarCtx, netmsg->parts[offset], netmsg->parts[offset+1]);

   303 	    	}

   304 	    } else if (!strcmp(cmd, "CLIENT_FLAGS")) {

   305 	        if(netmsg->partCount < 3 || strlen(netmsg->parts[1]) < 2) {

   306 	        	flib_log_w("Net: Malformed CLIENT_FLAGS message");

   307 	        } else {

   308 				const char *flags = netmsg->parts[1];

   309 				bool setFlag = flags[0] == '+';

   310 

   311 				for(int j = 2; j < netmsg->partCount; ++j) {

   312 					bool isSelf = !strcmp(conn->playerName, netmsg->parts[j]);

   313 					if(isSelf && strchr(flags, 'h')) {

   314 						conn->isChief = setFlag;

   315 					}

   316 					conn->onClientFlagsCb(conn->onClientFlagsCtx, netmsg->parts[j], flags+1, setFlag);

   317 				}

   318 	        }

   319 	    } else if (!strcmp(cmd, "ADD_TEAM")) {

   320 	        if(netmsg->partCount != 24 || conn->netconnState!=NETCONN_STATE_ROOM) {

   321 	            flib_log_w("Net: Bad ADD_TEAM message");

   322 	        } else {

   323 	        	flib_team *team = flib_team_from_netmsg(netmsg->parts+1);

   324 	        	if(!team || flib_teamlist_insert(&conn->teamlist, team, conn->teamlist.teamCount)) {

   325 					flib_team_destroy(team);

   326 					conn->netconnState = NETCONN_STATE_DISCONNECTED;

   327 					conn->onDisconnectedCb(conn->onDisconnectedCtx, NETCONN_DISCONNECT_INTERNAL_ERROR, "Internal error");

   328 					exit = true;

   329 	        	} else {

   330 	        		conn->onTeamAddCb(conn->onTeamAddCtx, team);

   331 	        	}

   332 	        }

   333 	    } else if (!strcmp(cmd, "REMOVE_TEAM")) {

   334 	        if(netmsg->partCount != 2 || conn->netconnState!=NETCONN_STATE_ROOM) {

   335 	            flib_log_w("Net: Bad REMOVETEAM message");

   336 	        } else {

   337 	        	flib_teamlist_delete(&conn->teamlist, netmsg->parts[1]);

   338 	        	conn->onTeamDeleteCb(conn->onTeamDeleteCtx, netmsg->parts[1]);

   339 	        }

   340 	    } else if(!strcmp(cmd, "ROOMABANDONED")) {

   341 	    	netconn_leaveRoom(conn);

   342 	        conn->onLeaveRoomCb(conn->onLeaveRoomCtx, NETCONN_ROOMLEAVE_ABANDONED, "Room destroyed");

   343 	    } else if(!strcmp(cmd, "KICKED")) {

   344 	    	netconn_leaveRoom(conn);

   345 	    	conn->onLeaveRoomCb(conn->onLeaveRoomCtx, NETCONN_ROOMLEAVE_KICKED, "You got kicked");

   346 	    } else if(!strcmp(cmd, "JOINED")) {

   347 	        if(netmsg->partCount < 2) {

   348 	            flib_log_w("Net: Bad JOINED message");

   349 	        } else {

   350 				for(int i = 1; i < netmsg->partCount; ++i)

   351 				{

   352 					bool isMe = !strcmp(conn->playerName, netmsg->parts[i]);

   353 					if (isMe) {

   354 						conn->netconnState = NETCONN_STATE_ROOM;

   355 						conn->onEnterRoomCb(conn->onEnterRoomCtx, conn->isChief);

   356 					}

   357 

   358 					conn->onRoomJoinCb(conn->onRoomJoinCtx, netmsg->parts[i]);

   359 				}

   360 	        }

   361 	    } else if(!strcmp(cmd, "LOBBY:JOINED")) {

   362 	        if(netmsg->partCount < 2) {

   363 	            flib_log_w("Net: Bad JOINED message");

   364 	        } else {

   365 				for(int i = 1; i < netmsg->partCount; ++i)

   366 				{

   367 					bool isMe = !strcmp(conn->playerName, netmsg->parts[i]);

   368 					if (isMe && conn->netconnState == NETCONN_STATE_CONNECTING) {

   369 						conn->onConnectedCb(conn->onConnectedCtx);

   370 						conn->netconnState = NETCONN_STATE_LOBBY;

   371 					}

   372 					conn->onLobbyJoinCb(conn->onLobbyJoinCtx, netmsg->parts[i]);

   373 				}

   374 	        }

   375 	    } else if(!strcmp(cmd, "LEFT")) {

   376 	        if(netmsg->partCount < 2) {

   377 	            flib_log_w("Net: Bad LEFT message");

   378 	        } else {

   379 	        	conn->onRoomLeaveCb(conn->onRoomLeaveCtx, netmsg->parts[1], netmsg->partCount>2 ? netmsg->parts[2] : NULL);

   380 	        }

   381 	    } else if(!strcmp(cmd, "ROOM") && netmsg->partCount >= 2) {

   382 	    	const char *subcmd = netmsg->parts[1];

   383 	    	if(!strcmp(subcmd, "ADD") && netmsg->partCount == 10) {

   384 	    		flib_room *room = flib_room_from_netmsg(netmsg->parts+2);

   385 	    		if(room) {

   386 	    			conn->onRoomAddCb(conn->onRoomAddCtx, room);

   387 	    		}

   388 	    		flib_room_destroy(room);

   389 			} else if(!strcmp(subcmd, "UPD") && netmsg->partCount == 11) {

   390 				flib_room *room = flib_room_from_netmsg(netmsg->parts+3);

   391 				if(room) {

   392 	    			conn->onRoomUpdateCb(conn->onRoomUpdateCtx, netmsg->parts[2], room);

   393 	    		}

   394 				flib_room_destroy(room);

   395 			} else if(!strcmp(subcmd, "DEL") && netmsg->partCount == 3) {

   396 				conn->onRoomDeleteCb(conn->onRoomDeleteCtx, netmsg->parts[2]);

   397 			} else {

   398 				flib_log_w("Net: Unknown or malformed ROOM subcommand: %s", subcmd);

   399 			}

   400 	    } else if(!strcmp(cmd, "LOBBY:LEFT")) {

   401 	        if(netmsg->partCount < 2) {

   402 	            flib_log_w("Net: Bad LOBBY:LEFT message");

   403 	        } else {

   404 	        	conn->onLobbyLeaveCb(conn->onLobbyLeaveCtx, netmsg->parts[1], netmsg->partCount>2 ? netmsg->parts[2] : NULL);

   405 	        }

   406 	    } else if (!strcmp(cmd, "RUN_GAME")) {

   407 	        conn->onRunGameCb(conn->onRunGameCtx);

   408 	    } else if (!strcmp(cmd, "ASKPASSWORD")) {

   409 	    	conn->onPasswordRequestCb(conn->onPasswordRequestCtx, conn->playerName);

   410 	    } else if (!strcmp(cmd, "NOTICE")) {

   411 	        if(netmsg->partCount < 2) {

   412 	            flib_log_w("Net: Bad NOTICE message");

   413 	        } else {

   414 				errno = 0;

   415 				long n = strtol(netmsg->parts[1], NULL, 10);

   416 				if(errno) {

   417 					flib_log_w("Net: Bad NOTICE message");

   418 				} else if(n==0) {

   419 					conn->onNickTakenCb(conn->onNickTakenCtx, conn->playerName);

   420 				} else {

   421 					flib_log_w("Net: Unknown NOTICE message: %l", n);

   422 				}

   423 	        }

   424 	    } else if (!strcmp(cmd, "TEAM_ACCEPTED")) {

   425 	        if (netmsg->partCount != 2 || conn->netconnState!=NETCONN_STATE_ROOM) {

   426 	            flib_log_w("Net: Bad TEAM_ACCEPTED message");

   427 	        } else {

   428 	        	flib_team *team = flib_team_copy(flib_teamlist_find(&conn->pendingTeamlist, netmsg->parts[1]));

   429 	        	if(team) {

   430 	        		flib_teamlist_insert(&conn->teamlist, team, conn->teamlist.teamCount);

   431 	        		flib_teamlist_delete(&conn->pendingTeamlist, netmsg->parts[1]);

   432 	        	} else {

   433 	        		flib_log_e("Team accepted that was not requested: %s", netmsg->parts[1]);

   434 	        	}

   435 	        	conn->onTeamAcceptedCb(conn->onTeamAcceptedCtx, netmsg->parts[1]);

   436 	        }

   437 	    } else if (!strcmp(cmd, "CFG")) {

   438 	        if(netmsg->partCount < 3 || conn->netconnState!=NETCONN_STATE_ROOM) {

   439 	            flib_log_w("Net: Bad CFG message");

   440 	        } else {

   441 	        	const char *subcmd = netmsg->parts[1];

   442 				if(!strcmp(subcmd, "SCHEME") && netmsg->partCount == flib_meta.modCount + flib_meta.settingCount + 3) {

   443 					flib_scheme *cfg = flib_scheme_from_netmsg(netmsg->parts+2);

   444 					if(cfg) {

   445 						flib_scheme_destroy(conn->scheme);

   446 						conn->scheme = cfg;

   447 						conn->onSchemeChangedCb(conn->onSchemeChangedCtx, cfg);

   448 					} else {

   449 						flib_log_e("Error processing CFG SCHEME message");

   450 					}

   451 				} else if(!strcmp(subcmd, "FULLMAPCONFIG") && netmsg->partCount == 7) {

   452 					flib_map *map = flib_map_from_netmsg(netmsg->parts+2);

   453 					if(map) {

   454 						flib_map_destroy(conn->map);

   455 						conn->map = map;

   456 						conn->onMapChangedCb(conn->onMapChangedCtx, conn->map, NETCONN_MAPCHANGE_FULL);

   457 					} else {

   458 						flib_log_e("Error processing CFG FULLMAPCONFIG message");

   459 					}

   460 				} else if(!strcmp(subcmd, "MAP") && netmsg->partCount == 3) {

   461 					char *mapname = flib_strdupnull(netmsg->parts[2]);

   462 					if(mapname) {

   463 						free(conn->map->name);

   464 						conn->map->name = mapname;

   465 						conn->onMapChangedCb(conn->onMapChangedCtx, conn->map, NETCONN_MAPCHANGE_MAP);

   466 					} else {

   467 						flib_log_e("Error processing CFG MAP message");

   468 					}

   469 				} else if(!strcmp(subcmd, "THEME") && netmsg->partCount == 3) {

   470 					char *themename = flib_strdupnull(netmsg->parts[2]);

   471 					if(themename) {

   472 						free(conn->map->theme);

   473 						conn->map->theme = themename;

   474 						conn->onMapChangedCb(conn->onMapChangedCtx, conn->map, NETCONN_MAPCHANGE_THEME);

   475 					} else {

   476 						flib_log_e("Error processing CFG THEME message");

   477 					}

   478 				} else if(!strcmp(subcmd, "SEED") && netmsg->partCount == 3) {

   479 					char *seed = flib_strdupnull(netmsg->parts[2]);

   480 					if(seed) {

   481 						free(conn->map->seed);

   482 						conn->map->seed = seed;

   483 						conn->onMapChangedCb(conn->onMapChangedCtx, conn->map, NETCONN_MAPCHANGE_SEED);

   484 					} else {

   485 						flib_log_e("Error processing CFG SEED message");

   486 					}

   487 				} else if(!strcmp(subcmd, "TEMPLATE") && netmsg->partCount == 3) {

   488 					conn->map->templateFilter = atoi(netmsg->parts[2]);

   489 					conn->onMapChangedCb(conn->onMapChangedCtx, conn->map, NETCONN_MAPCHANGE_TEMPLATE);

   490 				} else if(!strcmp(subcmd, "MAPGEN") && netmsg->partCount == 3) {

   491 					conn->map->mapgen = atoi(netmsg->parts[2]);

   492 					conn->onMapChangedCb(conn->onMapChangedCtx, conn->map, NETCONN_MAPCHANGE_MAPGEN);

   493 				} else if(!strcmp(subcmd, "MAZE_SIZE") && netmsg->partCount == 3) {

   494 					conn->map->mazeSize = atoi(netmsg->parts[2]);

   495 					conn->onMapChangedCb(conn->onMapChangedCtx, conn->map, NETCONN_MAPCHANGE_MAZE_SIZE);

   496 				} else if(!strcmp(subcmd, "DRAWNMAP") && netmsg->partCount == 3) {

   497 					size_t drawnMapSize = 0;

   498 					uint8_t *drawnMapData = NULL;

   499 					if(!flib_drawnmapdata_from_netmsg(netmsg->parts[2], &drawnMapData, &drawnMapSize)) {

   500 						free(conn->map->drawData);

   501 						conn->map->drawData = drawnMapData;

   502 						conn->map->drawDataSize = drawnMapSize;

   503 						conn->onMapChangedCb(conn->onMapChangedCtx, conn->map, NETCONN_MAPCHANGE_DRAWNMAP);

   504 					} else {

   505 						flib_log_e("Error processing CFG DRAWNMAP message");

   506 					}

   507 				} else if(!strcmp(subcmd, "SCRIPT") && netmsg->partCount == 3) {

   508 					netconn_setScript(conn, netmsg->parts[2]);

   509 					conn->onScriptChangedCb(conn->onScriptChangedCtx, netmsg->parts[2]);

   510 				} else if(!strcmp(subcmd, "AMMO") && netmsg->partCount == 4) {

   511 					flib_weaponset *weapons = flib_weaponset_from_ammostring(netmsg->parts[2], netmsg->parts[3]);

   512 					if(weapons) {

   513 						flib_weaponset_destroy(conn->weaponset);

   514 						conn->weaponset = weapons;

   515 						conn->onWeaponsetChangedCb(conn->onWeaponsetChangedCtx, weapons);

   516 					} else {

   517 						flib_log_e("Error processing CFG AMMO message");

   518 					}

   519 				} else {

   520 					flib_log_w("Net: Unknown or malformed CFG subcommand: %s", subcmd);

   521 				}

   522 	        }

   523 	    } else if (!strcmp(cmd, "HH_NUM")) {

   524 	        if (netmsg->partCount != 3 || conn->netconnState!=NETCONN_STATE_ROOM) {

   525 	            flib_log_w("Net: Bad HH_NUM message");

   526 	        } else {

   527 	        	int hogs = atoi(netmsg->parts[2]);

   528 	        	if(hogs<=0 || hogs>HEDGEHOGS_PER_TEAM) {

   529 	        		flib_log_w("Net: Bad HH_NUM message: %s hogs", netmsg->parts[2]);

   530 	        	} else {

   531 	        		flib_team *team = flib_teamlist_find(&conn->teamlist, netmsg->parts[1]);

   532 	        		if(team) {

   533 	        			team->hogsInGame = hogs;

   534 	        		} else {

   535 	        			flib_log_e("HH_NUM message for unknown team %s", netmsg->parts[1]);

   536 	        		}

   537 	        		conn->onHogCountChangedCb(conn->onHogCountChangedCtx, netmsg->parts[1], hogs);

   538 	        	}

   539 	        }

   540 	    } else if (!strcmp(cmd, "TEAM_COLOR")) {

   541 	        if (netmsg->partCount != 3 || conn->netconnState!=NETCONN_STATE_ROOM) {

   542 	            flib_log_w("Net: Bad TEAM_COLOR message");

   543 	        } else {

   544 	        	long color;

   545 	        	if(sscanf(netmsg->parts[2], "%lu", &color) && color>=0 && color<flib_teamcolor_count) {

   546 	        		flib_team *team = flib_teamlist_find(&conn->teamlist, netmsg->parts[1]);

   547 	        		if(team) {

   548 	        			team->colorIndex = color;

   549 	        		} else {

   550 	        			flib_log_e("TEAM_COLOR message for unknown team %s", netmsg->parts[1]);

   551 	        		}

   552 	        		conn->onTeamColorChangedCb(conn->onTeamColorChangedCtx, netmsg->parts[1], color);

   553 	        	} else {

   554 	        		flib_log_w("Net: Bad TEAM_COLOR message: Color %s", netmsg->parts[2]);

   555 	        	}

   556 	        }

   557 	    } else if (!strcmp(cmd, "EM")) {

   558 	        if(netmsg->partCount < 2) {

   559 	            flib_log_w("Net: Bad EM message");

   560 	        } else {

   561 	        	for(int i = 1; i < netmsg->partCount; ++i) {

   562 					char *out = NULL;

   563 					size_t outlen;

   564 					bool ok = base64_decode_alloc(netmsg->parts[i], strlen(netmsg->parts[i]), &out, &outlen);

   565 					if(ok && outlen) {

   566 						conn->onEngineMessageCb(conn->onEngineMessageCtx, (uint8_t*)out, outlen);

   567 					} else {

   568 						flib_log_e("Net: Malformed engine message: %s", netmsg->parts[i]);

   569 					}

   570 					free(out);

   571 	        	}

   572 	        }

   573 	    } else if (!strcmp(cmd, "BYE")) {

   574 	        if (netmsg->partCount < 2) {

   575 	            flib_log_w("Net: Bad BYE message");

   576 	        } else {

   577 				conn->netconnState = NETCONN_STATE_DISCONNECTED;

   578 				if (!strcmp(netmsg->parts[1], "Authentication failed")) {

   579 					conn->onDisconnectedCb(conn->onDisconnectedCtx, NETCONN_DISCONNECT_AUTH_FAILED, netmsg->parts[1]);

   580 				} else {

   581 					conn->onDisconnectedCb(conn->onDisconnectedCtx, NETCONN_DISCONNECT_NORMAL, netmsg->parts[1]);

   582 				}

   583 				exit = true;

   584 	        }

   585 	    } else if (!strcmp(cmd, "ADMIN_ACCESS")) {

   586 	    	// deprecated

   587 	    } else if (!strcmp(cmd, "ROOM_CONTROL_ACCESS")) {

   588 	    	// deprecated

   589 	    } else {

   590 	    	flib_log_w("Unknown server command: %s", cmd);

   591 	    }

   592 		flib_netmsg_destroy(netmsg);

   593 	}

   594 

   595 	if(!exit && !conn->destroyRequested && !flib_netbase_connected(net)) {

   596 		conn->netconnState = NETCONN_STATE_DISCONNECTED;

   597 		conn->onDisconnectedCb(conn->onDisconnectedCtx, NETCONN_DISCONNECT_CONNLOST, "Connection lost");

   598 	}

   599 }

   600 

   601 void flib_netconn_tick(flib_netconn *conn) {

   602 	if(!log_badargs_if(conn==NULL)

   603 			&& !log_w_if(conn->running, "Call to flib_netconn_tick from a callback")

   604 			&& !log_w_if(conn->netconnState == NETCONN_STATE_DISCONNECTED, "We are already done.")) {

   605 		conn->running = true;

   606 		flib_netconn_wrappedtick(conn);

   607 		conn->running = false;

   608 

   609 		if(conn->destroyRequested) {

   610 			flib_netconn_destroy(conn);

   611 		}

   612 	}

   613 }