| 1 | /* |
1 | /* |
| 2 | CrossFire, A Multiplayer game for X-windows |
2 | * CrossFire, A Multiplayer game |
| 3 | |
3 | * |
|
|
4 | * Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team |
| 4 | Copyright (C) 1992 Frank Tore Johansen |
5 | * Copyright (C) 1992 Frank Tore Johansen |
| 5 | |
6 | * |
| 6 | This program is free software; you can redistribute it and/or modify |
7 | * This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
8 | * it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
9 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
10 | * (at your option) any later version. |
| 10 | |
11 | * |
| 11 | This program is distributed in the hope that it will be useful, |
12 | * This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
15 | * GNU General Public License for more details. |
| 15 | |
16 | * |
| 16 | You should have received a copy of the GNU General Public License |
17 | * 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 | * along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 19 | |
20 | * |
| 20 | The author can be reached via e-mail to mark@pyramid.com |
21 | * The author can be reached via e-mail to mark@pyramid.com |
| 21 | */ |
22 | */ |
| 22 | |
23 | |
| 23 | /** |
24 | /** |
| 24 | * \file |
25 | * \file |
| 25 | * Low-level socket-related functions. |
26 | * Low-level socket-related functions. |
| 26 | * |
27 | * |
| 27 | * \date 2003-12-02 |
28 | * \date 2003-12-02 |
| … | |
… | |
| 185 | |
186 | |
| 186 | /** |
187 | /** |
| 187 | * Dispatch table for the server. |
188 | * Dispatch table for the server. |
| 188 | */ |
189 | */ |
| 189 | static struct packet_type packets[] = { |
190 | static struct packet_type packets[] = { |
| 190 | {"ncom", PC(NewPlayerCmd) PF_PLAYING }, |
191 | {"ncom", PC(NewPlayerCmd) PF_PLAYING | PF_COMMAND6 }, |
| 191 | {"command", PC(PlayerCmd) PF_PLAYING }, |
192 | {"command", PC(PlayerCmd) PF_PLAYING | PF_COMMAND0 }, |
| 192 | |
193 | |
| 193 | {"examine", PC(ExamineCmd) PF_PLAYING }, |
194 | {"examine", PC(ExamineCmd) PF_PLAYING }, |
|
|
195 | {"ex", PC(ExCmd) PF_PLAYING }, |
| 194 | {"apply", PC(ApplyCmd) PF_PLAYING }, |
196 | {"apply", PC(ApplyCmd) PF_PLAYING }, |
| 195 | {"lookat", PC(LookAt) PF_PLAYING }, |
197 | {"lookat", PC(LookAt) PF_PLAYING }, |
| 196 | {"lock", PC(LockItem) PF_PLAYING }, |
198 | {"lock", PC(LockItem) PF_PLAYING }, |
| 197 | {"mark", PC(MarkItem) PF_PLAYING }, |
199 | {"mark", PC(MarkItem) PF_PLAYING }, |
| 198 | {"move", PC(MoveCmd) PF_PLAYING }, |
200 | {"move", PC(MoveCmd) PF_PLAYING }, |
| 199 | {"ext", PC(ExtCmd) 0 }, /* CF+ */ |
201 | {"ext", PC(ExtCmd) 0 }, // CF+ |
| 200 | {"mapredraw", PC(MapRedrawCmd) 0 }, /* Added: phil */ |
202 | {"mapredraw", PC(MapRedrawCmd) 0 }, |
| 201 | {"mapinfo", PC(MapInfoCmd) 0 }, /* CF+ */ |
203 | {"mapinfo", PC(MapInfoCmd) 0 }, // CF+ |
| 202 | |
204 | |
| 203 | {"reply", SC(ReplyCmd) 0 }, |
205 | {"reply", SC(ReplyCmd) 0 }, |
| 204 | {"exti", SC(ExtiCmd) 0 }, /* CF+ */ |
206 | {"exti", SC(ExtiCmd) 0 }, // CF+ |
| 205 | {"addme", SC(AddMeCmd) 0 }, |
207 | {"addme", SC(AddMeCmd) 0 }, |
| 206 | {"askface", SC(SendFaceCmd) 0 }, /* Added: phil */ |
208 | {"askface", SC(AskFaceCmd) 0 }, |
| 207 | {"requestinfo", SC(RequestInfo) 0 }, |
209 | {"requestinfo", SC(RequestInfo) 0 }, |
| 208 | {"setfacemode", SC(SetFaceMode) 0 }, |
210 | {"setfacemode", SC(SetFaceMode) 0 }, |
| 209 | {"setsound", SC(SetSound) 0 }, |
211 | {"setsound", SC(SetSound) 0 }, |
| 210 | {"setup", SC(SetUp) 0 }, |
212 | {"setup", SC(SetUp) 0 }, |
| 211 | {"version", SC(VersionCmd) 0 }, |
213 | {"version", SC(VersionCmd) 0 }, |
| … | |
… | |
| 219 | { |
221 | { |
| 220 | return (!(pkt->flags & PF_PLAYER) || pl) |
222 | return (!(pkt->flags & PF_PLAYER) || pl) |
| 221 | && (!(pkt->flags & PF_PLAYING) || state == ST_PLAYING); |
223 | && (!(pkt->flags & PF_PLAYING) || state == ST_PLAYING); |
| 222 | } |
224 | } |
| 223 | |
225 | |
|
|
226 | // HACK: some commands currently should be executed |
|
|
227 | // even when the player is frozen. this hack detects |
|
|
228 | // those commands. it should be folded into may_execute, |
|
|
229 | // but kept seperate to emphasise the hack aspect, i.e. |
|
|
230 | // do it better, then remove. |
|
|
231 | static bool |
|
|
232 | always_immediate (const client *ns, const packet_type *pkt, const char *data, int len) |
|
|
233 | { |
|
|
234 | if (!(pkt->flags & (PF_COMMAND0 | PF_COMMAND6))) |
|
|
235 | return false; |
|
|
236 | |
|
|
237 | if (!ns->pl || !ns->pl->ob || !ns->pl->ob->map) |
|
|
238 | return false; |
|
|
239 | |
|
|
240 | if (pkt->flags & PF_COMMAND6) |
|
|
241 | { |
|
|
242 | data += 6; |
|
|
243 | len -= 6; |
|
|
244 | } |
|
|
245 | |
|
|
246 | if (len > 4 && !strncmp (data, "say " , 4)) |
|
|
247 | return true; |
|
|
248 | if (len > 5 && !strncmp (data, "chat ", 5)) |
|
|
249 | return true; |
|
|
250 | |
|
|
251 | return false; |
|
|
252 | } |
|
|
253 | |
| 224 | void |
254 | void |
| 225 | client::execute (const packet_type *pkt, char *data, int datalen) |
255 | client::execute (const packet_type *pkt, char *data, int datalen) |
| 226 | { |
256 | { |
| 227 | if (may_execute (pkt)) |
257 | if (may_execute (pkt) || always_immediate (this, pkt, data, datalen)) |
| 228 | { |
258 | { |
| 229 | //TODO: only one format |
259 | //TODO: only one format |
| 230 | if (pkt->flags & PF_PLAYER) |
260 | if (pkt->flags & PF_PLAYER) |
| 231 | ((void (*)(char *, int, player *))pkt->cb)((char *)data, datalen, pl); |
261 | ((void (*)(char *, int, player *))pkt->cb)((char *)data, datalen, pl); |
| 232 | else |
262 | else |
| … | |
… | |
| 273 | } |
303 | } |
| 274 | |
304 | |
| 275 | for (packet_type *pkt = packets; pkt < packets + (sizeof (packets) / sizeof (packets[0])); ++pkt) |
305 | for (packet_type *pkt = packets; pkt < packets + (sizeof (packets) / sizeof (packets[0])); ++pkt) |
| 276 | if (!strcmp ((char *)inbuf + 2, pkt->name)) |
306 | if (!strcmp ((char *)inbuf + 2, pkt->name)) |
| 277 | { |
307 | { |
| 278 | if (pkt->flags & PF_PLAYER) |
308 | if (pkt->flags & PF_PLAYER && !always_immediate (this, pkt, data, datalen)) |
| 279 | queue_command (pkt, data, datalen); |
309 | queue_command (pkt, data, datalen); |
| 280 | else |
310 | else |
| 281 | execute (pkt, data, datalen); |
311 | execute (pkt, data, datalen); |
| 282 | |
312 | |
| 283 | goto next_packet; |
313 | goto next_packet; |
| … | |
… | |
| 380 | */ |
410 | */ |
| 381 | void |
411 | void |
| 382 | client::send (void *buf_, int len) |
412 | client::send (void *buf_, int len) |
| 383 | { |
413 | { |
| 384 | char *buf = (char *)buf_; |
414 | char *buf = (char *)buf_; |
| 385 | char *pos = buf; |
|
|
| 386 | int amt = 0; |
|
|
| 387 | |
415 | |
| 388 | if (destroyed () || !buf) |
416 | if (destroyed () || !buf) |
| 389 | return; |
417 | return; |
| 390 | |
418 | |
| 391 | if ((len + outputbuffer.len) > SOCKETBUFSIZE) |
419 | if (len + outputbuffer.len > SOCKETBUFSIZE) |
| 392 | { |
420 | { |
| 393 | LOG (llevDebug, "socket on fd %d has overrun internal buffer - marking as dead\n", fd); |
421 | LOG (llevDebug, "socket on fd %d has overrun internal buffer - marking as dead\n", fd); |
| 394 | destroy (); |
422 | // shutdown the socket, this is safer than destroying it immediately |
|
|
423 | // as lots of code in the callchain might still access the map etc. |
|
|
424 | shutdown (fd, SHUT_RDWR); |
| 395 | return; |
425 | return; |
| 396 | } |
426 | } |
| 397 | |
427 | |
| 398 | int avail, end; |
428 | int avail, end; |
| 399 | |
429 | |
| … | |
… | |
| 475 | va_end (ap); |
505 | va_end (ap); |
| 476 | |
506 | |
| 477 | send_packet (sl); |
507 | send_packet (sl); |
| 478 | } |
508 | } |
| 479 | |
509 | |
|
|
510 | void |
|
|
511 | client::send_drawinfo (const char *msg, int flags) |
|
|
512 | { |
|
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513 | send_packet_printf ("drawinfo %d %s", flags, msg); |
|
|
514 | } |
|
|
515 | |
|
|
516 | void |
|
|
517 | client::send_msg (int color, const char *type, const char *msg) |
|
|
518 | { |
|
|
519 | if (can_msg) |
|
|
520 | send_packet_printf ("msg %d %s %s", color, type, msg); |
|
|
521 | else if (color < 0) |
|
|
522 | return; // client cannot handle this |
|
|
523 | else if (strchr (msg, '<') || strchr (msg, '&')) |
|
|
524 | { |
|
|
525 | //TODO: should escape/modify to old syntax |
|
|
526 | send_packet_printf ("drawinfo %d %s", color, msg); |
|
|
527 | } |
|
|
528 | else |
|
|
529 | send_packet_printf ("drawinfo %d %s", color, msg); |
|
|
530 | } |
|
|
531 | |
| 480 | /*********************************************************************** |
532 | /*********************************************************************** |
| 481 | * |
533 | * |
| 482 | * packet functions/utilities |
534 | * packet functions/utilities |
| 483 | * |
535 | * |
| 484 | **********************************************************************/ |
536 | **********************************************************************/ |
| … | |
… | |
| 488 | reset (); |
540 | reset (); |
| 489 | |
541 | |
| 490 | int len = strlen (name); |
542 | int len = strlen (name); |
| 491 | memcpy (cur, name, len); cur += len; |
543 | memcpy (cur, name, len); cur += len; |
| 492 | *cur++ = ' '; |
544 | *cur++ = ' '; |
|
|
545 | } |
|
|
546 | |
|
|
547 | packet &packet::operator <<(const ber32 v) |
|
|
548 | { |
|
|
549 | enum { maxlen = 32 / 7 + 1}; |
|
|
550 | uint8 buf[maxlen]; |
|
|
551 | uint8 *p = buf + maxlen; |
|
|
552 | uint32 val = v.val; |
|
|
553 | |
|
|
554 | *--p = val & 0x7F; |
|
|
555 | |
|
|
556 | while (val > 0x7F) |
|
|
557 | { |
|
|
558 | val >>= 7; |
|
|
559 | *--p = (val & 0x7F) | 0x80; |
|
|
560 | } |
|
|
561 | |
|
|
562 | return *this << data (p, buf + maxlen - p); |
| 493 | } |
563 | } |
| 494 | |
564 | |
| 495 | packet &packet::operator <<(const data &v) |
565 | packet &packet::operator <<(const data &v) |
| 496 | { |
566 | { |
| 497 | if (room () < v.len) |
567 | if (room () < v.len) |
