2 * Netris -- A free networked version of T*tris
3 * Copyright (C) 1994,1995,1996 Mark H. Weaver <mhw@netris.org>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 #include <sys/types.h>
28 #include <netinet/in.h>
30 #include <sys/socket.h>
37 #define HEADER_SIZE sizeof(netint4[3])
39 static struct option options[] = {
40 { "wait", 0, 0, 'w' },
41 { "port", 1, 0, 'p' },
42 { "quadra", 1, 0, 'q' },
43 { "min-players", 1, 0, 'm' },
44 { "max-players", 1, 0, 'x' },
45 { "continuous", 1, 0, 'c' },
46 { "speed", 1, 0, 'i' },
47 { "seed", 1, 0, 's' },
48 { "verbose", 0, 0, 'v' },
49 { "info", 0, 0, 'H' },
50 { "help", 0, 0, 'h' },
54 static char minplayers = 2;
55 static char maxplayers = 8;
56 static char playercount;
57 static char verbose = 0;
59 struct sockaddr_in addr;
61 MyEventType NetGenFunc(EventGenRec *gen, MyEvent *event);
62 static EventGenRec netGen[MAX_SCREENS] = {
63 { NULL, 0, FT_read, -1, NetGenFunc, EM_net, 0, "\0", 0, HEADER_SIZE }
66 static MyEventType AlarmGenFunc(EventGenRec *gen, MyEvent *event);
67 static EventGenRec alarmGen = {
68 &alarmGen, 0, FT_read, -1, AlarmGenFunc, EM_alarm
71 static MyEventType ConnGenFunc(EventGenRec *gen, MyEvent *event);
72 static EventGenRec connGen = {
73 NULL, 0, FT_read, -1, ConnGenFunc, EM_connect
76 static EventGenRec *nextGen = &alarmGen;
78 static sigjmp_buf close_env;
81 void SendPacketTo(short playa, short uid, NetPacketType type, int size, void *data)
85 if (netGen[playa].fd >= 0) {
87 fprintf(stderr, ": send %d from %d to %d\n", type, uid, playa);
88 header[0] = hton4(uid);
89 header[1] = hton4(type);
90 header[2] = hton4(size + HEADER_SIZE);
91 if (MyWrite(netGen[playa].fd, header, HEADER_SIZE) != HEADER_SIZE)
92 die("write (header)");
93 if (size > 0 && data && MyWrite(netGen[playa].fd, data, size) != size)
98 static MyEventType AlarmGenFunc(EventGenRec *gen, MyEvent *event)
103 void SCloseNet(short playa)
104 { //kick some connection's ass!
107 if (netGen[playa].fd >= 0) {
108 if (Players[playa].alive >= 0) {
109 SendPacketTo(playa, 0, NP_endConn, 0, NULL);
110 do {} while (WaitMyEvent(&event, EM_net) != E_lostConn);
111 } //say bye to player
112 close(netGen[playa].fd);
113 netGen[playa].fd = -1;
115 if (netGen[playa].next)
116 RemoveEventGen(&netGen[playa]);
120 { //nou oogjes dicht en snaveltjes toe
123 fprintf(stderr, "- Closing connections...\n");
124 for (i = 1; i < MAX_SCREENS; i++)
125 SCloseNet(i); // bye everybuddy
126 fprintf(stderr, "* All Done\n\n");
129 MyEventType NetGenFunc(EventGenRec *gen, MyEvent *event)
132 short uid, type, size;
133 netint4 *data = (netint4*)&(gen->buf);
135 result = MyRead(gen->fd, gen->buf + gen->bufSize,
136 gen->bufGoal - gen->bufSize);
138 fprintf(stderr, "- Closed connection to player #%d\n", gen->player);
141 gen->bufSize += result;
142 if (gen->bufSize < gen->bufGoal)
144 // *ugly* memcpy(data, gen->buf, sizeof(data));
145 uid = ntoh4(data[0]);
146 type = ntoh4(data[1]);
147 size = ntoh4(data[2]);
149 if (gen->bufSize < gen->bufGoal)
152 gen->bufGoal = HEADER_SIZE;
153 event->u.net.sender = gen->player;
154 event->u.net.uid = uid;
155 event->u.net.type = type;
156 event->u.net.size = size - HEADER_SIZE;
157 event->u.net.data = gen->buf + HEADER_SIZE;
158 if (type == NP_endConn) {
159 fprintf(stderr, "- Quit player #%d\n", gen->player);
161 } //client sent quit signal
166 static MyEventType ConnGenFunc(EventGenRec *gen, MyEvent *event)
172 addrLen = sizeof(addr);
173 for (new = 1; new <= MAX_SCREENS; new++)
174 if (netGen[new].fd < 0) break;
175 if (new > maxplayers) return;
178 netGen[new].fd = accept(gen->fd, (struct sockaddr *)&addr, &addrLen)
181 fprintf(stderr, "+ Connection: %s\n", inet_ntoa(addr.sin_addr));
184 setsockopt(netGen[new].fd, SOL_SOCKET, SO_LINGER,(void *)&val2,
186 AddEventGen(&netGen[new]);
187 netGen[new].player = event->u.net.uid = new;
188 { //new connection; netGen already initialized in GenFunc
189 struct hostent *host;
191 sprintf(Players[new].host, "%s", inet_ntoa(addr.sin_addr));
192 if (addr.sin_family == AF_INET) {
193 host = gethostbyaddr(
194 (void *)&addr.sin_addr, sizeof(struct in_addr), AF_INET
197 strncpy(Players[new].host, host->h_name,
198 sizeof(Players[new].host) - 1);
199 Players[new].host[sizeof(Players[new].host) - 1] = 0;
200 } //set player's hostname
206 void CountPlayers(void)
207 { //count number of players/teams
210 for (i = 1; i < MAX_SCREENS; i++) if (Players[i].alive > 0) {
211 if (Players[i].team < 128) for (j = 1; j < i; j++) {
212 if (Players[j].alive > 0 && Players[j].team == Players[i].team) {
213 playercount--; // player of same team counted before
221 int StartServer(void)
224 netint2 currentpiece[MAX_SCREENS];
225 int playersReady = 0;
228 char teams[10][7] = {
229 "", "Green", "Cyan", "Blue", "Purple",
230 "Red", "Grey", "White", "*Orange"
234 switch (WaitMyEvent(&event, EM_any)) {
235 case E_lostConn: //client went away :(
236 Players[event.u.net.sender].alive = -1;
237 for (i = 1; i < MAX_SCREENS; i++)
238 if (Players[i].alive >= 0)
239 SendPacketTo(i, event.u.net.sender,
240 NP_part, sizeof(Players[0].alive),
241 &Players[event.u.net.sender].alive);
242 SCloseNet(event.u.net.sender);
245 if (verbose) fprintf(stderr, ": %d sent %d\n",
246 netGen[event.u.net.sender].fd, event.u.net.type);
247 switch(event.u.net.type) {
249 // if (event.u.net.type != NP_hello) ByeClient(new);
251 netint4 versiondata[2];
256 memcpy(versiondata, event.u.net.data, sizeof(versiondata));
257 major = ntoh4(versiondata[0]);
258 protocolVersion = ntoh4(versiondata[1]);
259 if (major != MAJOR_VERSION
260 || protocolVersion != PROTOCOL_VERSION) {
261 snprintf(data, sizeof(data),
262 "Version mismatch: received %d.%d",
263 major, protocolVersion);
264 fprintf(stderr, "= Wrong version player #%d (%s)\n",
265 event.u.net.sender, data);
266 SendPacketTo(event.u.net.sender, 0, NP_error,
267 strlen(data)+1, data);
268 SCloseNet(event.u.net.sender);
270 fprintf(stderr, "* Accepted player #%d\n",
275 //receive player details and return other players
276 memcpy(&Players[event.u.net.sender],
277 event.u.net.data, event.u.net.size);
278 if (Players[event.u.net.sender].team < 1
279 || Players[event.u.net.sender].team > 7) {
282 for (team = 1; team < 7; team++) {
283 for (i = 1; i < MAX_SCREENS; i++)
284 if (Players[i].alive > 0 && Players[i].team == team)
286 if (i == MAX_SCREENS) break;
288 Players[event.u.net.sender].team = team;
289 SendPacketTo(event.u.net.sender, event.u.net.sender, NP_team,
290 sizeof(Players[event.u.net.sender].team),
291 &Players[event.u.net.sender].team);
293 if (Game.started < 2)
294 Players[event.u.net.sender].flags |= SCF_paused;
295 if (!Game.continuous && Game.started >= 2) {
297 strcpy(data, "Can't join: Game has already started");
298 fprintf(stderr, "- Can't join player #%d in "
299 "non-continuous game\n", event.u.net.sender);
300 SendPacketTo(event.u.net.sender, 0, NP_error,
301 strlen(data)+1, data);
302 // SCloseNet(event.u.net.sender, 0);
304 } //can't join started game
315 memcpy(&data, &Players[event.u.net.sender].flags,
316 sizeof(data.playerflags));
317 memcpy(&data.gravity, &Game.gravity,
318 sizeof(data) - sizeof(data.playerflags));
319 SendPacketTo(event.u.net.sender, 0, NP_gamedata,
320 sizeof(data), &data);
321 } //send game options
322 for (i = 1; i < MAX_SCREENS; i++)
323 if (netGen[i].fd >= 0 && i != event.u.net.sender) {
324 SendPacketTo(event.u.net.sender, i, NP_newPlayer,
325 sizeof(_Player), &Players[i]);
326 SendPacketTo(event.u.net.sender, i, NP_newPiece,
327 sizeof(Players[i].curShape), &Players[i].curShape);
328 SendPacketTo(i, event.u.net.sender, NP_newPlayer,
329 sizeof(_Player), &Players[event.u.net.sender]);
330 } //send (to) players
331 fprintf(stderr, "> Joined player #%d: %s <%s> (%s)\n",
333 Players[event.u.net.sender].name,
334 Players[event.u.net.sender].host,
335 teams[Players[event.u.net.sender].team]);
336 if (++playersReady >= minplayers) {
337 if (Game.started > 1)
338 SendPacketTo(event.u.net.sender, 0,
341 fprintf(stderr, "* Starting game (%010d)\n",
343 for (i = 1; i < MAX_SCREENS; i++)
344 SendPacketTo(i, 0, NP_start, 0, NULL);
346 } //first goahead (to all)*/
348 break; //NP_playerdata
350 memcpy(&Players[event.u.net.sender].curShape,
351 event.u.net.data, sizeof(Players[0].curShape));
354 Players[event.u.net.sender].alive = 0;
355 fprintf(stderr, "< Player #%d died\n",
357 //check for unpaused game
360 Players[event.u.net.sender].flags ^= SCF_paused;
361 paused = Game.started < 1;
362 for (i = 1; i < MAX_SCREENS; i++)
363 if (Players[i].alive > 0)
364 paused |= (Players[i].flags & SCF_paused) != 0;
365 fprintf(stderr, "* Player #%d (un)paused (pause=%d)\n",
366 event.u.net.sender, paused);
369 default: //relay data to all players
371 // if (event.u.net.type >= NP_pause)
372 if (event.u.net.type >= NP_rotright
375 for (i = 1; i < MAX_SCREENS; i++)
376 if (i != event.u.net.sender)
377 if (event.u.net.type != NP_giveJunk
378 || Players[i].team != Players[event.u.net.sender].team)
379 SendPacketTo(i, event.u.net.sender,
380 event.u.net.type, event.u.net.size,
386 { //new connection; netGen already initialized in GenFunc
387 char serverdata[255];
389 sprintf(serverdata, "Netris server %s", version_string);
390 SendPacketTo(event.u.net.uid, event.u.net.uid, NP_hello,
391 strlen(serverdata)+1, serverdata);
396 if (Game.started < 1) {
397 if (playercount >= 2) {
398 fprintf(stderr, "* Game (%010d) ready to start\n", Game.seed);
401 } //game not yet started
403 if (playercount < 2) {
404 fprintf(stderr, "* Stopping game\n");
405 if (Game.seed) Game.seed++;
406 if (Game.started > 1) for (i = 1; i < MAX_SCREENS; i++) {
407 if (Players[i].alive >= 0) {
408 Players[i].alive = 1;
409 Players[i].flags |= SCF_paused;
410 SendPacketTo(i, 0, NP_stop,
411 sizeof(Game.seed), &Game.seed);
412 } //transmit game stop and set players not ready
416 } //too few players for game
417 if (Game.started == 1 && !paused) {
419 fprintf(stderr, "* Game starts\n");
420 for (i = 1; i < MAX_SCREENS; i++)
421 if (Players[i].alive > 0)
422 SendPacketTo(i, 0, NP_start, 0, NULL);
423 } //everybody ready to start
424 } //game (ready to) start(ed)
426 fprintf(stderr, "* Exiting server\n");
433 "NETRIS Server %s\t(c) 2002 Shiar <shiar@shiar.org>\n\n",
441 "Usage: netris <options>\n"
443 " -h, --help\t\tPrint this usage information\n"
444 " -H, --info\t\tShow distribution and warranty information\n"
446 " -p, --port %d\tSet port number\n"
448 " -s, --seed <seed>\tStart with given random seed\n"
449 " -i, --speed %.2f\tSet the initial step-down interval, in seconds\n"
450 " -m, --min-players %d\tNumber of players required before starting the game\n"
451 " -x, --max-players %d\tMaximum number of players allowed in the game\n"
452 " -c, --continuous\tDon'n quit the game\n"
454 DEFAULT_PORT, DEFAULT_INTERVAL/1e6, minplayers, maxplayers
458 void HandleOption(char tag, char *value)
467 case 'c': //min-players
468 Game.continuous = atoi(value);
470 case 'm': //min-players
471 minplayers = atoi(value);
473 case 'x': //max-players
474 maxplayers = MIN(atoi(value), MAX_SCREENS);
476 case 'q': //quadra-style gravity
479 case 'i': //speed (of level 1)
480 Game.initspeed = atof(value) * 1e6;
483 Game.seed = atoi(value);
497 void ReadConf(char *filename)
503 char tag[81], value[81];
505 file_in = fopen(filename, "r");
507 while (fgets(buf, 512, file_in) != NULL) {
508 if ((ch = strchr(buf, '#')))
509 *ch = '\0'; // truncate string from # char
510 for (i = strlen(buf)-1; i >= 0; i--)
511 if (buf[i] == ' ' || buf[i] == '\t'
512 || buf[i] == '\n' || buf[i] == 13)
516 sscanf(buf, "%80[^= \t] = %80[^\n]", tag, value);
517 for (i = 0; options[i].name; i++){
518 if (!strcasecmp(options[i].name, tag)) {
519 HandleOption(options[i].val, value);
527 fprintf(stderr, "Unable to open config file %s.\n", filename);
532 void CatchInt(int sig)
534 siglongjmp(close_env, 1);
537 int main(int argc, char **argv)
541 if (sigsetjmp(close_env, 1)) exit(0);
542 signal(SIGINT, CatchInt);
545 Game.initspeed = DEFAULT_INTERVAL;
551 for (i = 1; i < MAX_SCREENS; i++)
552 Players[i].alive = -1;
555 // if (getopt(argc, argv, "f:") == 'f')
558 ReadConf(CONFIG_FILE);
559 while ((ch = getopt_long(
560 argc, argv, "hHvqp:i:s:c:m:x:", options, NULL
562 HandleOption(ch, optarg);
574 for (i = 1; i < MAX_SCREENS; i++)
575 memcpy(&netGen[i], &netGen[0], sizeof(EventGenRec));
583 memset(&addr, 0, sizeof(addr));
584 addr.sin_family = AF_INET;
585 addr.sin_port = htons(port);
586 addr.sin_addr.s_addr = htonl(INADDR_ANY);
587 if ((connGen.fd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
590 setsockopt(connGen.fd, SOL_SOCKET, SO_REUSEADDR,
591 (void *)&val1, sizeof(val1));
592 if (bind(connGen.fd, (struct sockaddr *)&addr, sizeof(addr)) < 0)
594 if (listen(connGen.fd, 1) < 0)
597 AddEventGen(&connGen);
598 } //setup listening sock
600 StartServer(); //server loop