1 | /* |
1 | /* |
2 | CrossFire, A Multiplayer game for X-windows |
2 | * CrossFire, A Multiplayer game for X-windows |
3 | |
3 | * |
4 | Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team |
4 | * Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team |
5 | Copyright (C) 1992 Frank Tore Johansen |
5 | * Copyright (C) 1992 Frank Tore Johansen |
6 | |
6 | * |
7 | 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 |
8 | 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 |
9 | the Free Software Foundation; either version 2 of the License, or |
9 | * the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. |
10 | * (at your option) any later version. |
11 | |
11 | * |
12 | 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, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | GNU General Public License for more details. |
15 | * GNU General Public License for more details. |
16 | |
16 | * |
17 | 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 |
18 | along with this program; if not, write to the Free Software |
18 | * along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 | |
20 | * |
21 | 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 |
22 | */ |
22 | */ |
23 | |
23 | |
24 | /** |
24 | /** |
25 | * \file |
25 | * \file |
26 | * Low-level socket-related functions. |
26 | * Low-level socket-related functions. |
27 | * |
27 | * |
28 | * \date 2003-12-02 |
28 | * \date 2003-12-02 |
… | |
… | |
186 | |
186 | |
187 | /** |
187 | /** |
188 | * Dispatch table for the server. |
188 | * Dispatch table for the server. |
189 | */ |
189 | */ |
190 | static struct packet_type packets[] = { |
190 | static struct packet_type packets[] = { |
191 | {"ncom", PC(NewPlayerCmd) PF_PLAYING }, |
191 | {"ncom", PC(NewPlayerCmd) PF_PLAYING | PF_COMMAND6 }, |
192 | {"command", PC(PlayerCmd) PF_PLAYING }, |
192 | {"command", PC(PlayerCmd) PF_PLAYING | PF_COMMAND0 }, |
193 | |
193 | |
194 | {"examine", PC(ExamineCmd) PF_PLAYING }, |
194 | {"examine", PC(ExamineCmd) PF_PLAYING }, |
195 | {"apply", PC(ApplyCmd) PF_PLAYING }, |
195 | {"apply", PC(ApplyCmd) PF_PLAYING }, |
196 | {"lookat", PC(LookAt) PF_PLAYING }, |
196 | {"lookat", PC(LookAt) PF_PLAYING }, |
197 | {"lock", PC(LockItem) PF_PLAYING }, |
197 | {"lock", PC(LockItem) PF_PLAYING }, |
… | |
… | |
220 | { |
220 | { |
221 | return (!(pkt->flags & PF_PLAYER) || pl) |
221 | return (!(pkt->flags & PF_PLAYER) || pl) |
222 | && (!(pkt->flags & PF_PLAYING) || state == ST_PLAYING); |
222 | && (!(pkt->flags & PF_PLAYING) || state == ST_PLAYING); |
223 | } |
223 | } |
224 | |
224 | |
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225 | // HACK: some commands currently should be executed |
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226 | // even when the player is frozen. this hack detects |
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227 | // those commands. it should be folded into may_execute, |
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228 | // but kept seperate to emphasise the hack aspect, i.e. |
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229 | // do it better, then remove. |
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230 | static bool |
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231 | always_immediate (const client *ns, const packet_type *pkt, const char *data, int len) |
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232 | { |
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233 | if (!(pkt->flags & (PF_COMMAND0 | PF_COMMAND6))) |
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234 | return false; |
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235 | |
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236 | if (!ns->pl || !ns->pl->ob || !ns->pl->ob->map) |
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237 | return false; |
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238 | |
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239 | if (pkt->flags & PF_COMMAND6) |
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240 | { |
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241 | data += 6; |
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242 | len -= 6; |
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243 | } |
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244 | |
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245 | if (len > 4 && !strncmp (data, "say " , 4)) |
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246 | return true; |
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247 | if (len > 5 && !strncmp (data, "chat ", 5)) |
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248 | return true; |
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249 | |
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250 | return false; |
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251 | } |
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252 | |
225 | void |
253 | void |
226 | client::execute (const packet_type *pkt, char *data, int datalen) |
254 | client::execute (const packet_type *pkt, char *data, int datalen) |
227 | { |
255 | { |
228 | if (may_execute (pkt)) |
256 | if (may_execute (pkt) || always_immediate (this, pkt, data, datalen)) |
229 | { |
257 | { |
230 | //TODO: only one format |
258 | //TODO: only one format |
231 | if (pkt->flags & PF_PLAYER) |
259 | if (pkt->flags & PF_PLAYER) |
232 | ((void (*)(char *, int, player *))pkt->cb)((char *)data, datalen, pl); |
260 | ((void (*)(char *, int, player *))pkt->cb)((char *)data, datalen, pl); |
233 | else |
261 | else |
… | |
… | |
274 | } |
302 | } |
275 | |
303 | |
276 | for (packet_type *pkt = packets; pkt < packets + (sizeof (packets) / sizeof (packets[0])); ++pkt) |
304 | for (packet_type *pkt = packets; pkt < packets + (sizeof (packets) / sizeof (packets[0])); ++pkt) |
277 | if (!strcmp ((char *)inbuf + 2, pkt->name)) |
305 | if (!strcmp ((char *)inbuf + 2, pkt->name)) |
278 | { |
306 | { |
279 | if (pkt->flags & PF_PLAYER) |
307 | if (pkt->flags & PF_PLAYER && !always_immediate (this, pkt, data, datalen)) |
280 | queue_command (pkt, data, datalen); |
308 | queue_command (pkt, data, datalen); |
281 | else |
309 | else |
282 | execute (pkt, data, datalen); |
310 | execute (pkt, data, datalen); |
283 | |
311 | |
284 | goto next_packet; |
312 | goto next_packet; |
… | |
… | |
381 | */ |
409 | */ |
382 | void |
410 | void |
383 | client::send (void *buf_, int len) |
411 | client::send (void *buf_, int len) |
384 | { |
412 | { |
385 | char *buf = (char *)buf_; |
413 | char *buf = (char *)buf_; |
386 | char *pos = buf; |
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387 | int amt = 0; |
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388 | |
414 | |
389 | if (destroyed () || !buf) |
415 | if (destroyed () || !buf) |
390 | return; |
416 | return; |
391 | |
417 | |
392 | if ((len + outputbuffer.len) > SOCKETBUFSIZE) |
418 | if (len + outputbuffer.len > SOCKETBUFSIZE) |
393 | { |
419 | { |
394 | LOG (llevDebug, "socket on fd %d has overrun internal buffer - marking as dead\n", fd); |
420 | LOG (llevDebug, "socket on fd %d has overrun internal buffer - marking as dead\n", fd); |
395 | destroy (); |
421 | destroy (); |
396 | return; |
422 | return; |
397 | } |
423 | } |