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);
156 struct user *finduser(unsigned char c)
160 for (u = &me; u; u = u->next)
164 fatal("Protocol error: reference to non-existing user");
165 return NULL; /* so that gcc -Wall doesn't complain */
168 char *get_user_name(unsigned char c)
173 return("the server");
177 for (u = &me; u; u = u->next)
178 if (u->nr == c && u->name && strlen(u->name))
189 options[0] = options[1] = NULL;
193 options[n++] = "-nospeedup";
200 XTRISPATH "/rnd_server",
204 "rnd_server", "-once", options[0], options[1], NULL);
206 fprintf(stderr, "Can't start server '%s'.\n",
208 XTRISPATH "/rnd_server"
217 fatal("fork() failed");
224 BOOL ConnectToServer(char *host, int port)
227 struct sockaddr_in s;
228 struct protoent *tcpproto;
233 if ((s.sin_addr.s_addr = inet_addr(host)) == -1)
235 hp = gethostbyname(host);
237 fatal("Host not found");
238 s.sin_addr = *(struct in_addr *)(hp->h_addr_list[0]);
242 s.sin_addr.s_addr = inet_addr("127.0.0.1");
247 s.sin_port = htons(port);
248 s.sin_family = AF_INET;
249 sfd = socket(PF_INET, SOCK_STREAM, 0);
251 fatal("Out of file descriptors");
252 if ((tcpproto = getprotobyname("tcp")) != NULL)
253 setsockopt(sfd, tcpproto->p_proto, TCP_NODELAY, (char *)&on, sizeof(int));
255 if (connect(sfd, (struct sockaddr *)&s, sizeof(s)) < 0)
259 printf("No rocksndiamonds server on localhost - starting up one ...\n");
265 sfd = socket(PF_INET, SOCK_STREAM, 0);
267 fatal("Out of file descriptors");
268 setsockopt(sfd, tcpproto->p_proto, TCP_NODELAY, (char *)&on, sizeof(int));
269 if (connect(sfd, (struct sockaddr *)&s, sizeof(s)) >= 0)
273 fatal("Can't connect to server");
276 fatal("Can't connect to server");
282 void SendToServer_Nickname(char *nickname)
284 static char msgbuf[300];
287 memcpy(&buf[2], nickname, strlen(nickname));
288 sendbuf(2 + strlen(nickname));
289 sprintf(msgbuf, "you set your nick to \"%s\"", nickname);
293 void SendToServer_ProtocolVersion()
296 buf[2] = PROT_VERS_1;
297 buf[3] = PROT_VERS_2;
298 buf[4] = PROT_VERS_3;
302 void SendToServer_NrWanted(int nr_wanted)
304 buf[1] = OP_NRWANTED;
309 void SendToServer_StartPlaying()
312 buf[2] = (byte)(level_nr >> 8);
313 buf[3] = (byte)(level_nr & 0xff);
314 buf[4] = (byte)(leveldir_nr >> 8);
315 buf[5] = (byte)(leveldir_nr & 0xff);
316 strcpy(&buf[6], leveldir[leveldir_nr].name);
317 sendbuf(strlen(leveldir[leveldir_nr].name)+1 + 6);
320 void SendToServer_MovePlayer(byte player_action, unsigned long frame_nr)
323 buf[2] = player_action;
328 buf[3] = (byte)((frame_nr >> 24) & 0xff);
329 buf[4] = (byte)((frame_nr >> 16) & 0xff);
330 buf[5] = (byte)((frame_nr >> 8) & 0xff);
331 buf[6] = (byte)((frame_nr >> 0) & 0xff);
337 printf("%d: %x, %x, %x, %x\n", frame_nr, buf[3], buf[4], buf[5], buf[6]);
348 void handlemessages()
351 struct user *u, *v = NULL;
352 static char msgbuf[300];
354 while (nread >= 4 && nread >= 4 + readbuf[3])
357 if (readbuf[0] || readbuf[1] || readbuf[2])
358 fatal("Wrong server line length");
360 memcpy(buf, &readbuf[4], len);
362 copydown(readbuf, readbuf + 4 + len, nread);
368 int new_client_nr = buf[2];
369 int new_index_nr = new_client_nr - 1;
371 printf("OP_YOUARE: %d\n", buf[0]);
372 me.nr = new_client_nr;
374 stored_player[new_index_nr] = *local_player;
375 local_player = &stored_player[new_index_nr];
377 TestPlayer = new_index_nr;
379 if (me.nr > MAX_PLAYERS)
380 Error(ERR_EXIT, "sorry - no more than %d players", MAX_PLAYERS);
382 sprintf(msgbuf, "you get client # %d", new_client_nr);
390 int client_nr_wanted = buf[2];
391 int new_client_nr = buf[3];
392 int new_index_nr = new_client_nr - 1;
394 printf("OP_NRWANTED: %d\n", buf[0]);
396 if (new_client_nr != client_nr_wanted)
398 char *color[] = { "yellow", "red", "green", "blue" };
400 sprintf(msgbuf, "Sorry ! You are %s player !",
401 color[new_index_nr]);
402 Request(msgbuf, REQ_CONFIRM);
404 sprintf(msgbuf, "cannot switch -- you keep client # %d",
410 if (me.nr != client_nr_wanted)
411 sprintf(msgbuf, "switching to client # %d", new_client_nr);
413 sprintf(msgbuf, "keeping client # %d", new_client_nr);
416 me.nr = new_client_nr;
418 stored_player[new_index_nr] = *local_player;
419 local_player = &stored_player[new_index_nr];
421 TestPlayer = new_index_nr;
428 printf("OP_NEW: %d\n", buf[0]);
429 sprintf(msgbuf, "new client %d connected", buf[0]);
432 for (u = &me; u; u = u->next)
435 Error(ERR_EXIT, "multiplayer server sent duplicate player id");
440 v->next = u = mmalloc(sizeof(struct user));
448 printf("OP_NICK: %d\n", buf[0]);
449 u = finduser(buf[0]);
451 sprintf(msgbuf, "client %d calls itself \"%s\"", buf[0], &buf[2]);
453 strncpy(u->name, &buf[2], MAXNICKLEN);
457 printf("OP_GONE: %d\n", buf[0]);
458 u = finduser(buf[0]);
459 sprintf(msgbuf, "client %d (%s) disconnected",
460 buf[0], get_user_name(buf[0]));
463 for (v = &me; v; v = v->next)
471 Error(ERR_RETURN, "protocol version mismatch");
472 Error(ERR_EXIT, "server expects %d.%d.x instead of %d.%d.%d",
473 buf[2], buf[3], PROT_VERS_1, PROT_VERS_2, PROT_VERS_3);
477 printf("OP_PLAY: %d\n", buf[0]);
478 sprintf(msgbuf, "client %d starts game [level %d from levedir %d (%s)]\n",
480 (buf[2] << 8) + buf[3],
481 (buf[4] << 8) + buf[5],
485 if (strcmp(leveldir[(buf[4] << 8) + buf[5]].name, &buf[6]) == 0)
487 leveldir_nr = (buf[4] << 8) + buf[5];
489 local_player->leveldir_nr = leveldir_nr;
490 LoadPlayerInfo(PLAYER_LEVEL);
491 SavePlayerInfo(PLAYER_SETUP);
493 level_nr = (buf[2] << 8) + buf[3];
496 LoadLevelTape(level_nr);
503 TapeStartRecording();
505 game_status = PLAYING;
511 Error(ERR_RETURN, "no such level directory: '%s'", &buf[6]);
521 (buf[2] << 24) | (buf[3] << 16) | (buf[4] << 8) | (buf[5]);
523 for (i=0; i<MAX_PLAYERS; i++)
525 if (stored_player[i].active)
526 network_player_action[i] = buf[6 + i];
529 network_player_action_stored = TRUE;
532 printf("FrameCounter == %d, frame_nr = %d\n",
533 FrameCounter, frame_nr);
542 printf("OP_MOVE: %d\n", buf[0]);
545 sprintf(msgbuf, "frame %d: client %d moves player [0x%02x]",
546 FrameCounter, buf[0], buf[2]);
553 printf("OP_PAUSE: %d\n", buf[0]);
554 sprintf(msgbuf, "client %d pauses game", buf[0]);
559 printf("OP_CONT: %d\n", buf[0]);
560 sprintf(msgbuf, "client %d continues game", buf[0]);
565 printf("OP_WON: %d\n", buf[0]);
566 sprintf(msgbuf, "client %d wins the game", buf[0]);
571 printf("OP_ZERO: %d\n", buf[0]);
572 sprintf(msgbuf, "client %d resets game counters", buf[0]);
577 printf("OP_MSG: %d\n", buf[0]);
578 sprintf(msgbuf, "client %d sends message", buf[0]);
582 printf("OP_MSG: %d\n", buf[0]);
583 sprintf(msgbuf, "client %d has lost", buf[0]);
587 printf("OP_MSG: %d\n", buf[0]);
588 sprintf(msgbuf, "client %d sets level to %d", buf[0], buf[2]);
596 void HandleNetworking()
598 static struct timeval tv = { 0, 0 };
610 r = select(sfd + 1, &rfds, NULL, NULL, &tv);
612 if (r < 0 && errno != EINTR)
615 fatal("fatal: select() failed");
621 if (FD_ISSET(sfd, &rfds))
625 r = read(sfd, readbuf + nread, BUFLEN - nread);
628 fatal("Error reading from server");
630 fatal("Connection to server lost");