1 /***********************************************************
2 * Rocks'n'Diamonds -- McDuffin Strikes Back! *
3 *----------------------------------------------------------*
4 * (c) 1995-98 Artsoft Entertainment *
8 * phone: ++49 +521 290471 *
9 * email: aeglos@valinor.owl.de *
10 *----------------------------------------------------------*
12 ***********************************************************/
18 #include <sys/types.h>
21 #include <sys/socket.h>
22 #include <netinet/in.h>
23 #include <netinet/tcp.h>
24 #include <arpa/inet.h>
38 #define DEFAULTPORT 19503
73 char name[MAXNICKLEN+2];
89 unsigned char realbuf[512], readbuf[BUFLEN], writbuf[BUFLEN];
90 unsigned char *buf = realbuf + 4;
91 int nread = 0, nwrite = 0;
93 /* like memcpy, but guaranteed to handle overlap when s <= t */
94 void copydown(char *s, char *t, int n)
104 printf("** %s\n", s);
111 fprintf(stderr, "%s.\n", s);
121 fatal("Out of memory");
128 tm.tv_sec = i / 1000000;
129 tm.tv_usec = i % 1000000;
130 select(0, NULL, NULL, NULL, &tm);
137 write(sfd, writbuf, nwrite);
142 void sendbuf(int len)
146 realbuf[0] = realbuf[1] = realbuf[2] = 0;
147 realbuf[3] = (unsigned char)len;
149 if (nwrite + 4 + len >= BUFLEN)
150 fatal("Internal error: send buffer overflow");
151 memcpy(writbuf + nwrite, realbuf, 4 + len);
161 struct user *finduser(unsigned char c)
165 for (u = &me; u; u = u->next)
169 fatal("Protocol error: reference to non-existing user");
170 return NULL; /* so that gcc -Wall doesn't complain */
173 char *get_user_name(unsigned char c)
178 return("the server");
182 for (u = &me; u; u = u->next)
183 if (u->nr == c && u->name && strlen(u->name))
194 options[0] = options[1] = NULL;
198 options[n++] = "-nospeedup";
205 XTRISPATH "/rnd_server",
209 "rnd_server", "-once", options[0], options[1], NULL);
211 fprintf(stderr, "Can't start server '%s'.\n",
213 XTRISPATH "/rnd_server"
222 fatal("fork() failed");
229 BOOL ConnectToServer(char *host, int port)
232 struct sockaddr_in s;
233 struct protoent *tcpproto;
238 if ((s.sin_addr.s_addr = inet_addr(host)) == -1)
240 hp = gethostbyname(host);
242 fatal("Host not found");
243 s.sin_addr = *(struct in_addr *)(hp->h_addr_list[0]);
247 s.sin_addr.s_addr = inet_addr("127.0.0.1");
252 s.sin_port = htons(port);
253 s.sin_family = AF_INET;
254 sfd = socket(PF_INET, SOCK_STREAM, 0);
256 fatal("Out of file descriptors");
257 if ((tcpproto = getprotobyname("tcp")) != NULL)
258 setsockopt(sfd, tcpproto->p_proto, TCP_NODELAY, (char *)&on, sizeof(int));
260 if (connect(sfd, (struct sockaddr *)&s, sizeof(s)) < 0)
264 printf("No rocksndiamonds server on localhost - starting up one ...\n");
270 sfd = socket(PF_INET, SOCK_STREAM, 0);
272 fatal("Out of file descriptors");
273 setsockopt(sfd, tcpproto->p_proto, TCP_NODELAY, (char *)&on, sizeof(int));
274 if (connect(sfd, (struct sockaddr *)&s, sizeof(s)) >= 0)
278 fatal("Can't connect to server");
281 fatal("Can't connect to server");
287 void SendToServer_Nickname(char *nickname)
289 static char msgbuf[300];
292 memcpy(&buf[2], nickname, strlen(nickname));
293 sendbuf(2 + strlen(nickname));
294 sprintf(msgbuf, "you set your nick to \"%s\"", nickname);
298 void SendToServer_ProtocolVersion()
301 buf[2] = PROT_VERS_1;
302 buf[3] = PROT_VERS_2;
303 buf[4] = PROT_VERS_3;
308 void SendToServer_NrWanted(int nr_wanted)
310 buf[1] = OP_NRWANTED;
316 void SendToServer_StartPlaying()
318 unsigned long new_random_seed = InitRND(NEW_RANDOMIZE);
321 buf[2] = (byte)(level_nr >> 8);
322 buf[3] = (byte)(level_nr & 0xff);
323 buf[4] = (byte)(leveldir_nr >> 8);
324 buf[5] = (byte)(leveldir_nr & 0xff);
326 buf[6] = (unsigned char)((new_random_seed >> 24) & 0xff);
327 buf[7] = (unsigned char)((new_random_seed >> 16) & 0xff);
328 buf[8] = (unsigned char)((new_random_seed >> 8) & 0xff);
329 buf[9] = (unsigned char)((new_random_seed >> 0) & 0xff);
331 strcpy(&buf[10], leveldir[leveldir_nr].name);
333 sendbuf(10 + strlen(leveldir[leveldir_nr].name)+1);
336 void SendToServer_MovePlayer(byte player_action)
339 buf[2] = player_action;
344 void handlemessages()
347 struct user *u, *v = NULL;
348 static char msgbuf[300];
350 while (nread >= 4 && nread >= 4 + readbuf[3])
353 if (readbuf[0] || readbuf[1] || readbuf[2])
354 fatal("Wrong server line length");
356 memcpy(buf, &readbuf[4], len);
358 copydown(readbuf, readbuf + 4 + len, nread);
364 int new_client_nr = buf[2];
365 int new_index_nr = new_client_nr - 1;
367 printf("OP_YOUARE: %d\n", buf[0]);
368 me.nr = new_client_nr;
370 stored_player[new_index_nr] = *local_player;
371 local_player = &stored_player[new_index_nr];
373 TestPlayer = new_index_nr;
375 if (me.nr > MAX_PLAYERS)
376 Error(ERR_EXIT, "sorry - no more than %d players", MAX_PLAYERS);
378 sprintf(msgbuf, "you get client # %d", new_client_nr);
386 int client_nr_wanted = buf[2];
387 int new_client_nr = buf[3];
388 int new_index_nr = new_client_nr - 1;
390 printf("OP_NRWANTED: %d\n", buf[0]);
392 if (new_client_nr != client_nr_wanted)
394 char *color[] = { "yellow", "red", "green", "blue" };
396 sprintf(msgbuf, "Sorry ! You are %s player !",
397 color[new_index_nr]);
398 Request(msgbuf, REQ_CONFIRM);
400 sprintf(msgbuf, "cannot switch -- you keep client # %d",
406 if (me.nr != client_nr_wanted)
407 sprintf(msgbuf, "switching to client # %d", new_client_nr);
409 sprintf(msgbuf, "keeping client # %d", new_client_nr);
412 me.nr = new_client_nr;
414 stored_player[new_index_nr] = *local_player;
415 local_player = &stored_player[new_index_nr];
417 TestPlayer = new_index_nr;
424 printf("OP_NEW: %d\n", buf[0]);
425 sprintf(msgbuf, "new client %d connected", buf[0]);
428 for (u = &me; u; u = u->next)
431 Error(ERR_EXIT, "multiplayer server sent duplicate player id");
436 v->next = u = mmalloc(sizeof(struct user));
444 printf("OP_NICK: %d\n", buf[0]);
445 u = finduser(buf[0]);
447 sprintf(msgbuf, "client %d calls itself \"%s\"", buf[0], &buf[2]);
449 strncpy(u->name, &buf[2], MAXNICKLEN);
453 printf("OP_GONE: %d\n", buf[0]);
454 u = finduser(buf[0]);
455 sprintf(msgbuf, "client %d (%s) disconnected",
456 buf[0], get_user_name(buf[0]));
459 for (v = &me; v; v = v->next)
467 Error(ERR_RETURN, "protocol version mismatch");
468 Error(ERR_EXIT, "server expects %d.%d.x instead of %d.%d.%d",
469 buf[2], buf[3], PROT_VERS_1, PROT_VERS_2, PROT_VERS_3);
474 int new_level_nr, new_leveldir_nr;
475 unsigned long new_random_seed;
476 unsigned char *new_leveldir_name;
478 if (game_status == PLAYING)
481 new_level_nr = (buf[2] << 8) + buf[3];
482 new_leveldir_nr = (buf[4] << 8) + buf[5];
484 (buf[6] << 24) | (buf[7] << 16) | (buf[8] << 8) | (buf[9]);
485 new_leveldir_name = &buf[10];
487 printf("OP_PLAY: %d\n", buf[0]);
488 sprintf(msgbuf, "client %d starts game [level %d from levedir %d (%s)]\n",
496 if (strcmp(leveldir[new_leveldir_nr].name, new_leveldir_name) != 0)
497 Error(ERR_RETURN, "no such level directory: '%s'",new_leveldir_name);
499 leveldir_nr = new_leveldir_nr;
501 local_player->leveldir_nr = leveldir_nr;
502 LoadPlayerInfo(PLAYER_LEVEL);
503 SavePlayerInfo(PLAYER_SETUP);
505 level_nr = new_level_nr;
508 LoadLevelTape(level_nr);
515 TapeStartRecording();
520 tape.random_seed = new_random_seed;
521 InitRND(tape.random_seed);
525 printf("tape.random_seed == %d\n", tape.random_seed);
528 game_status = PLAYING;
540 (buf[2] << 24) | (buf[3] << 16) | (buf[4] << 8) | (buf[5]);
542 if (frame_nr != FrameCounter)
544 Error(ERR_RETURN, "client and servers frame counters out of sync");
545 Error(ERR_RETURN, "frame counter of client is %d", FrameCounter);
546 Error(ERR_RETURN, "frame counter of server is %d", frame_nr);
547 Error(ERR_EXIT, "this should not happen -- please debug");
550 for (i=0; i<MAX_PLAYERS; i++)
552 if (stored_player[i].active)
553 network_player_action[i] = buf[6 + i];
556 network_player_action_received = TRUE;
558 sprintf(msgbuf, "frame %d: client %d moves player [0x%02x]",
559 FrameCounter, buf[0], buf[2]);
566 printf("OP_PAUSE: %d\n", buf[0]);
567 sprintf(msgbuf, "client %d pauses game", buf[0]);
572 printf("OP_CONT: %d\n", buf[0]);
573 sprintf(msgbuf, "client %d continues game", buf[0]);
578 printf("OP_WON: %d\n", buf[0]);
579 sprintf(msgbuf, "client %d wins the game", buf[0]);
584 printf("OP_ZERO: %d\n", buf[0]);
585 sprintf(msgbuf, "client %d resets game counters", buf[0]);
590 printf("OP_MSG: %d\n", buf[0]);
591 sprintf(msgbuf, "client %d sends message", buf[0]);
595 printf("OP_MSG: %d\n", buf[0]);
596 sprintf(msgbuf, "client %d has lost", buf[0]);
600 printf("OP_MSG: %d\n", buf[0]);
601 sprintf(msgbuf, "client %d sets level to %d", buf[0], buf[2]);
609 void HandleNetworking()
611 static struct timeval tv = { 0, 0 };
623 r = select(sfd + 1, &rfds, NULL, NULL, &tv);
625 if (r < 0 && errno != EINTR)
628 fatal("fatal: select() failed");
634 if (FD_ISSET(sfd, &rfds))
638 r = read(sfd, readbuf + nread, BUFLEN - nread);
641 fatal("Error reading from server");
643 fatal("Connection to server lost");