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Comparing deliantra/server/socket/lowlevel.C (file contents):
Revision 1.27 by root, Wed Dec 20 01:19:11 2006 UTC vs.
Revision 1.34 by pippijn, Thu Mar 1 12:28:17 2007 UTC

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) 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
51#define SOCKET_TIMEOUT2 20 * 1000 52#define SOCKET_TIMEOUT2 20 * 1000
52 53
53void 54void
54client::flush () 55client::flush ()
55{ 56{
57 if (destroyed ())
58 return;
59
56#ifdef __linux__ 60#ifdef __linux__
57 // check time of last ack, and, if too old, kill connection 61 // check time of last ack, and, if too old, kill connection
58 struct tcp_info tcpi; 62 struct tcp_info tcpi;
59 socklen_t len = sizeof (tcpi); 63 socklen_t len = sizeof (tcpi);
60 64
182 186
183/** 187/**
184 * Dispatch table for the server. 188 * Dispatch table for the server.
185 */ 189 */
186static struct packet_type packets[] = { 190static struct packet_type packets[] = {
187 {"ncom", PC(NewPlayerCmd) PF_PLAYING }, 191 {"ncom", PC(NewPlayerCmd) PF_PLAYING | PF_COMMAND6 },
188 {"command", PC(PlayerCmd) PF_PLAYING }, 192 {"command", PC(PlayerCmd) PF_PLAYING | PF_COMMAND0 },
189 193
190 {"examine", PC(ExamineCmd) PF_PLAYING }, 194 {"examine", PC(ExamineCmd) PF_PLAYING },
191 {"apply", PC(ApplyCmd) PF_PLAYING }, 195 {"apply", PC(ApplyCmd) PF_PLAYING },
192 {"reply", PC(ReplyCmd) 0 },
193 {"lookat", PC(LookAt) PF_PLAYING }, 196 {"lookat", PC(LookAt) PF_PLAYING },
194 {"lock", PC(LockItem) PF_PLAYING }, 197 {"lock", PC(LockItem) PF_PLAYING },
195 {"mark", PC(MarkItem) PF_PLAYING }, 198 {"mark", PC(MarkItem) PF_PLAYING },
196 {"move", PC(MoveCmd) PF_PLAYING }, 199 {"move", PC(MoveCmd) PF_PLAYING },
197 {"ext", PC(ExtCmd) 0 }, /* CF+ */ 200 {"ext", PC(ExtCmd) 0 }, /* CF+ */
198 {"mapredraw", PC(MapRedrawCmd) 0 }, /* Added: phil */ 201 {"mapredraw", PC(MapRedrawCmd) 0 }, /* Added: phil */
199 {"mapinfo", PC(MapInfoCmd) 0 }, /* CF+ */ 202 {"mapinfo", PC(MapInfoCmd) 0 }, /* CF+ */
200 203
204 {"reply", SC(ReplyCmd) 0 },
201 {"exti", SC(ExtiCmd) 0 }, /* CF+ */ 205 {"exti", SC(ExtiCmd) 0 }, /* CF+ */
202 {"addme", SC(AddMeCmd) 0 }, 206 {"addme", SC(AddMeCmd) 0 },
203 {"askface", SC(SendFaceCmd) 0 }, /* Added: phil */ 207 {"askface", SC(SendFaceCmd) 0 }, /* Added: phil */
204 {"requestinfo", SC(RequestInfo) 0 }, 208 {"requestinfo", SC(RequestInfo) 0 },
205 {"setfacemode", SC(SetFaceMode) 0 }, 209 {"setfacemode", SC(SetFaceMode) 0 },
213 217
214bool 218bool
215client::may_execute (const packet_type *pkt) const 219client::may_execute (const packet_type *pkt) const
216{ 220{
217 return (!(pkt->flags & PF_PLAYER) || pl) 221 return (!(pkt->flags & PF_PLAYER) || pl)
218 && (!(pkt->flags & PF_PLAYING) || (pl && pl->state == ST_PLAYING)); 222 && (!(pkt->flags & PF_PLAYING) || state == ST_PLAYING);
223}
224
225// HACK: some commands currently should be executed
226// even when the player is frozen. this hack detects
227// those commands. it should be folded into may_execute,
228// but kept seperate to emphasise the hack aspect, i.e.
229// do it better, then remove.
230static bool
231always_immediate (const client *ns, const packet_type *pkt, const char *data, int len)
232{
233 if (!(pkt->flags & (PF_COMMAND0 | PF_COMMAND6)))
234 return false;
235
236 if (!ns->pl || !ns->pl->ob || !ns->pl->ob->map)
237 return false;
238
239 if (pkt->flags & PF_COMMAND6)
240 {
241 data += 6;
242 len -= 6;
243 }
244
245 if (len > 4 && !strncmp (data, "say " , 4))
246 return true;
247 if (len > 5 && !strncmp (data, "chat ", 5))
248 return true;
249
250 return false;
219} 251}
220 252
221void 253void
222client::execute (const packet_type *pkt, char *data, int datalen) 254client::execute (const packet_type *pkt, char *data, int datalen)
223{ 255{
224 if (may_execute (pkt)) 256 if (may_execute (pkt) || always_immediate (this, pkt, data, datalen))
225 { 257 {
226 //TODO: only one format 258 //TODO: only one format
227 if (pkt->flags & PF_PLAYER) 259 if (pkt->flags & PF_PLAYER)
228 ((void (*)(char *, int, player *))pkt->cb)((char *)data, datalen, pl); 260 ((void (*)(char *, int, player *))pkt->cb)((char *)data, datalen, pl);
229 else 261 else
270 } 302 }
271 303
272 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)
273 if (!strcmp ((char *)inbuf + 2, pkt->name)) 305 if (!strcmp ((char *)inbuf + 2, pkt->name))
274 { 306 {
275 if (pkt->flags & PF_PLAYER) 307 if (pkt->flags & PF_PLAYER && !always_immediate (this, pkt, data, datalen))
276 queue_command (pkt, data, datalen); 308 queue_command (pkt, data, datalen);
277 else 309 else
278 execute (pkt, data, datalen); 310 execute (pkt, data, datalen);
279 311
280 goto next_packet; 312 goto next_packet;
294// callback called when socket is either readable or writable 326// callback called when socket is either readable or writable
295void 327void
296client::socket_cb (iow &w, int got) 328client::socket_cb (iow &w, int got)
297{ 329{
298 //TODO remove when we have better socket cleanup logic 330 //TODO remove when we have better socket cleanup logic
299 if (status == Ns_Dead) 331 if (destroyed ())
300 { 332 {
301 socket_ev.poll (0); 333 socket_ev.poll (0);
302 return; 334 return;
303 } 335 }
304 336
377 */ 409 */
378void 410void
379client::send (void *buf_, int len) 411client::send (void *buf_, int len)
380{ 412{
381 char *buf = (char *)buf_; 413 char *buf = (char *)buf_;
382 char *pos = buf;
383 int amt = 0;
384 414
385 if (status == Ns_Dead || !buf) 415 if (destroyed () || !buf)
386 return; 416 return;
387 417
388 if ((len + outputbuffer.len) > SOCKETBUFSIZE) 418 if (len + outputbuffer.len > SOCKETBUFSIZE)
389 { 419 {
390 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);
391 destroy (); 421 destroy ();
392 return; 422 return;
393 } 423 }
421 * shortcut function. 451 * shortcut function.
422 */ 452 */
423void 453void
424client::send_packet (packet &sl) 454client::send_packet (packet &sl)
425{ 455{
426 if (status == Ns_Dead) 456 if (destroyed ())
427 return; 457 return;
428 458
429 if (sl.length () >= MAXSOCKBUF) 459 if (sl.length () >= MAXSOCKBUF)
430 { 460 {
431 LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ()); 461 LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ());

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