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Comparing deliantra/server/socket/loop.C (file contents):
Revision 1.10 by root, Wed Dec 13 02:55:51 2006 UTC vs.
Revision 1.16 by root, Thu Dec 14 22:45:41 2006 UTC

… …
41#include <sys/time.h> 41#include <sys/time.h>
42#include <sys/socket.h> 42#include <sys/socket.h>
43#include <netinet/in.h> 43#include <netinet/in.h>
44#include <netdb.h> 44#include <netdb.h>
45 45
46#ifdef HAVE_UNISTD_H
47# include <unistd.h> 46#include <unistd.h>
48#endif
49
50#ifdef HAVE_ARPA_INET_H
51# include <arpa/inet.h> 47#include <arpa/inet.h>
52#endif
53 48
54#include <loader.h> 49#include <loader.h>
55#include <newserver.h> 50#include <newserver.h>
56 51
57/***************************************************************************** 52/*****************************************************************************
… …
65 * before player joins, and those happen after the player has joined. 60 * before player joins, and those happen after the player has joined.
66 * As such, we have function types that might be called, so 61 * As such, we have function types that might be called, so
67 * we end up having 2 tables. 62 * we end up having 2 tables.
68 */ 63 */
69 64
70typedef void (*func_uint8_int_ns) (char *, int, NewSocket *); 65typedef void (*func_uint8_int_ns) (char *, int, client_socket *);
71 66
72struct NsCmdMapping 67struct NsCmdMapping
73{ 68{
74 const char *cmdname; 69 const char *cmdname;
75 func_uint8_int_ns cmdproc; 70 func_uint8_int_ns cmdproc;
71 uint8 flag;
76}; 72};
77 73
78typedef void (*func_uint8_int_pl) (char *, int, player *); 74typedef void (*func_uint8_int_pl) (char *, int, player *);
79struct PlCmdMapping 75struct PlCmdMapping
80{ 76{
… …
107 {"lock", (func_uint8_int_pl) LockItem, 1}, 103 {"lock", (func_uint8_int_pl) LockItem, 1},
108 {"mark", (func_uint8_int_pl) MarkItem, 1}, 104 {"mark", (func_uint8_int_pl) MarkItem, 1},
109 {"mapredraw", MapRedrawCmd, 0}, /* Added: phil */ 105 {"mapredraw", MapRedrawCmd, 0}, /* Added: phil */
110 {"mapinfo", MapInfoCmd, 2}, /* CF+ */ 106 {"mapinfo", MapInfoCmd, 2}, /* CF+ */
111 {"ext", ExtCmd, 2}, /* CF+ */ 107 {"ext", ExtCmd, 2}, /* CF+ */
112 {NULL, NULL, 0} /* terminator */ 108 { 0 } /* terminator */
113}; 109};
114 110
115/** Face-related commands */ 111/** Face-related commands */
116static struct NsCmdMapping nscommands[] = { 112static struct NsCmdMapping nscommands[] = {
117 {"addme", AddMeCmd}, 113 {"addme", AddMeCmd, 2},
118 {"askface", SendFaceCmd}, /* Added: phil */ 114 {"askface", SendFaceCmd}, /* Added: phil */
119 {"requestinfo", RequestInfo}, 115 {"requestinfo", RequestInfo},
120 {"setfacemode", SetFaceMode}, 116 {"setfacemode", SetFaceMode, 2},
121 {"setsound", SetSound}, 117 {"setsound", SetSound, 2},
122 {"setup", SetUp}, 118 {"setup", SetUp, 2},
123 {"version", VersionCmd}, 119 {"version", VersionCmd, 2},
124 {"toggleextendedinfos", ToggleExtendedInfos}, /*Added: tchize */ 120 {"toggleextendedinfos", ToggleExtendedInfos, 2}, /*Added: tchize */
125 {"toggleextendedtext", ToggleExtendedText}, /*Added: tchize */ 121 {"toggleextendedtext", ToggleExtendedText, 2}, /*Added: tchize */
126 {"asksmooth", AskSmooth}, /*Added: tchize (smoothing technologies) */ 122 {"asksmooth", AskSmooth}, /*Added: tchize (smoothing technologies) */
127 {NULL, NULL} /* terminator (I, II & III) */ 123 { 0 } /* terminator (I, II & III) */
128}; 124};
129 125
130/** 126/**
131 * RequestInfo is sort of a meta command. There is some specific 127 * RequestInfo is sort of a meta command. There is some specific
132 * request of information, but we call other functions to provide 128 * request of information, but we call other functions to provide
133 * that information. 129 * that information.
134 */ 130 */
135void 131void
136RequestInfo (char *buf, int len, NewSocket * ns) 132RequestInfo (char *buf, int len, client_socket * ns)
137{ 133{
138 char *params = NULL, *cp; 134 char *params = NULL, *cp;
139 135
140 /* No match */ 136 /* No match */
141 char bigbuf[MAX_BUF]; 137 char bigbuf[MAX_BUF];
… …
166 else if (!strcmp (buf, "skill_info")) 162 else if (!strcmp (buf, "skill_info"))
167 send_skill_info (ns, params); 163 send_skill_info (ns, params);
168 else if (!strcmp (buf, "spell_paths")) 164 else if (!strcmp (buf, "spell_paths"))
169 send_spell_paths (ns, params); 165 send_spell_paths (ns, params);
170 else 166 else
171 Write_String_To_Socket (ns, bigbuf, len); 167 ns->send_packet (bigbuf, len);
172} 168}
173 169
174/** 170/**
175 * Handle client input. 171 * Handle client input.
176 * 172 *
… …
180 * with this socket, null if no player (one of the init_sockets for just 176 * with this socket, null if no player (one of the init_sockets for just
181 * starting a connection) 177 * starting a connection)
182 */ 178 */
183 179
184void 180void
185HandleClient (NewSocket * ns, player *pl) 181HandleClient (client_socket *ns, player *pl)
186{ 182{
187 int len = 0, i, cnt;
188 char *data;
189
190 /* Loop through this - maybe we have several complete packets here. */ 183 /* Loop through this - maybe we have several complete packets here. */
191 // limit to a few commands only, though, as to not monopolise the server 184 // limit to a few commands only, though, as to not monopolise the server
192 for (cnt = 16; cnt--;) 185 for (int repeat = 16; repeat--;)
193 { 186 {
194 /* If it is a player, and they don't have any speed left, we 187 /* If it is a player, and they don't have any speed left, we
195 * return, and will read in the data when they do have time. 188 * return, and will read in the data when they do have time.
196 */ 189 */
197 if (pl && pl->state == ST_PLAYING && pl->ob != NULL && pl->ob->speed_left < 0) 190 if (pl && pl->state == ST_PLAYING && pl->ob && pl->ob->speed_left < 0)
198 {
199 return; 191 return;
192
193 int pkt_len = ns->read_packet ();
194
195 if (pkt_len < 0)
200 } 196 {
201 197 LOG (llevError, "read error on player %s\n", &pl->ob->name);
202 i = SockList_ReadPacket (ns->fd, &ns->inbuf, MAXSOCKBUF - 1);
203
204 if (i < 0)
205 {
206#ifdef ESRV_DEBUG
207 LOG (llevDebug, "HandleClient: Read error on connection player %s\n", (pl ? pl->ob->name : "None"));
208#endif
209 /* Caller will take care of cleaning this up */ 198 /* Caller will take care of cleaning this up */
210 ns->status = Ns_Dead; 199 ns->status = Ns_Dead;
211 return; 200 return;
212 } 201 }
202 else if (pkt_len == 0)
213 /* Still dont have a full packet */ 203 /* Still dont have a full packet */
214 if (i == 0)
215 return; 204 return;
216
217// //D//TODO//temporarily log long commands
218// if (ns->inbuf.len >= 40 && pl && pl->ob)
219// LOG (llevDebug, "HandleClient: long comamnd from <%s,%s> %d<%s>\n", pl->ob->name, ns->host, ns->inbuf.len, ns->inbuf.buf + 2);
220 205
221 /* First, break out beginning word. There are at least 206 /* First, break out beginning word. There are at least
222 * a few commands that do not have any paremeters. If 207 * a few commands that do not have any paremeters. If
223 * we get such a command, don't worry about trying 208 * we get such a command, don't worry about trying
224 * to break it up. 209 * to break it up.
225 */ 210 */
211 int datalen;
226 data = (char *) strchr ((char *) ns->inbuf.buf + 2, ' '); 212 char *data = strchr ((char *)ns->inbuf + 2, ' ');
213
227 if (data) 214 if (data)
228 { 215 {
229 *data = '\0'; 216 *data++ = 0;
230 data++; 217 datalen = pkt_len - (data - (char *)ns->inbuf);
231 len = ns->inbuf.len - (data - (char *) ns->inbuf.buf);
232 } 218 }
233 else 219 else
220 {
221 data = (char *)ns->inbuf + 2; // better read garbage than segfault
234 len = 0; 222 datalen = 0;
235
236 ns->inbuf.buf[ns->inbuf.len] = '\0'; /* Terminate buffer - useful for string data */
237 for (i = 0; nscommands[i].cmdname != NULL; i++)
238 { 223 }
224
225 ns->inbuf [pkt_len] = 0; /* Terminate buffer - useful for string data */
226
227 for (int i = 0; nscommands[i].cmdname; i++)
228 {
239 if (strcmp ((char *) ns->inbuf.buf + 2, nscommands[i].cmdname) == 0) 229 if (!strcmp ((char *)ns->inbuf + 2, nscommands[i].cmdname))
240 { 230 {
241 nscommands[i].cmdproc ((char *) data, len, ns); 231 nscommands[i].cmdproc (data, datalen, ns);
242 ns->inbuf.len = 0; 232 ns->skip_packet (pkt_len);
243 return; //D// not doing this causes random memory corruption 233 //D// not doing this causes random memory corruption
234 if (nscommands[i].flag & 2)
244 goto next_packet; 235 goto next_packet;
236 return;
245 } 237 }
246 } 238 }
239
247 /* Player must be in the playing state or the flag on the 240 /* Player must be in the playing state or the flag on the
248 * the command must be zero for the user to use the command - 241 * the command must be zero for the user to use the command -
249 * otherwise, a player cam save, be in the play_again state, and 242 * otherwise, a player cam save, be in the play_again state, and
250 * the map they were on gets swapped out, yet things that try to look 243 * the map they were on gets swapped out, yet things that try to look
251 * at the map causes a crash. If the command is valid, but 244 * at the map causes a crash. If the command is valid, but
252 * one they can't use, we still swallow it up. 245 * one they can't use, we still swallow it up.
253 */ 246 */
254 if (pl) 247 if (pl)
255 for (i = 0; plcommands[i].cmdname != NULL; i++) 248 for (int i = 0; plcommands[i].cmdname; i++)
256 { 249 {
257 if (strcmp ((char *) ns->inbuf.buf + 2, plcommands[i].cmdname) == 0) 250 if (!strcmp ((char *)ns->inbuf + 2, plcommands[i].cmdname))
258 { 251 {
259 if (pl->state == ST_PLAYING || !(plcommands[i].flag & 1)) 252 if (pl->state == ST_PLAYING || !(plcommands[i].flag & 1))
260 plcommands[i].cmdproc ((char *) data, len, pl); 253 plcommands[i].cmdproc ((char *) data, datalen, pl);
261 ns->inbuf.len = 0; 254
255 ns->skip_packet (pkt_len);
262 //D// not doing this causes random memory corruption 256 //D// not doing this causes random memory corruption
263 if (plcommands[i].flag & 2) 257 if (plcommands[i].flag & 2)
264 goto next_packet; 258 goto next_packet;
259
265 return; 260 return;
266 } 261 }
267 } 262 }
263
268 /* If we get here, we didn't find a valid command. Logging 264 /* If we get here, we didn't find a valid command. Logging
269 * this might be questionable, because a broken client/malicious 265 * this might be questionable, because a broken client/malicious
270 * user could certainly send a whole bunch of invalid commands. 266 * user could certainly send a whole bunch of invalid commands.
271 */ 267 */
272 LOG (llevDebug, "Bad command from client (%s)\n", ns->inbuf.buf + 2); 268 LOG (llevDebug, "Bad command from client (%s)\n", ns->inbuf + 2);
269 ns->skip_packet (pkt_len);
273 next_packet: 270 next_packet:
274 ; 271 ;
275 } 272 }
276} 273}
277 274
278
279/*****************************************************************************
280 *
281 * Low level socket looping - select calls and watchdog udp packet
282 * sending.
283 *
284 ******************************************************************************/
285
286#ifdef WATCHDOG
287
288/**
289 * Tell watchdog that we are still alive
290 *
291 * I put the function here since we should hopefully already be getting
292 * all the needed include files for socket support
293 */
294
295void
296watchdog (void)
297{
298 static int fd = -1;
299 static struct sockaddr_in insock;
300
301 if (fd == -1)
302 {
303 struct protoent *protoent;
304
305 if ((protoent = getprotobyname ("udp")) == NULL || (fd = socket (PF_INET, SOCK_DGRAM, protoent->p_proto)) == -1)
306 {
307 return;
308 }
309 insock.sin_family = AF_INET;
310 insock.sin_port = htons ((unsigned short) 13325);
311 insock.sin_addr.s_addr = inet_addr ("127.0.0.1");
312 }
313 sendto (fd, (void *) &fd, 1, 0, (struct sockaddr *) &insock, sizeof (insock));
314}
315#endif
316
317void 275void
318flush_sockets (void) 276flush_sockets (void)
319{ 277{
320 player *pl; 278 for (sockvec::iterator i = client_sockets.begin (); i != client_sockets.end (); ++i)
321
322 for (pl = first_player; pl != NULL; pl = pl->next)
323 if (pl->socket.status != Ns_Dead) 279 if ((*i)->status != Ns_Dead)
324 Socket_Flush (&pl->socket); 280 (*i)->flush ();
325} 281}
326 282
327/** 283/**
328 * This checks the sockets for input, does the right thing. 284 * This checks the sockets for input, does the right thing.
329 * 285 *
… …
333 */ 289 */
334void 290void
335doeric_server (void) 291doeric_server (void)
336{ 292{
337 int i, pollret; 293 int i, pollret;
338 fd_set tmp_read, tmp_write; 294 fd_set tmp_read;
339 struct sockaddr_in addr; 295 struct sockaddr_in addr;
340 socklen_t addrlen = sizeof (struct sockaddr); 296 socklen_t addrlen = sizeof (struct sockaddr);
341 player *pl, *next; 297 player *pl, *next;
298 int maxfd = 0;
342 299
343#ifdef CS_LOGSTATS 300#ifdef CS_LOGSTATS
344 if ((time (NULL) - cst_lst.time_start) >= CS_LOGTIME) 301 if ((time (NULL) - cst_lst.time_start) >= CS_LOGTIME)
345 write_cs_stats (); 302 write_cs_stats ();
346#endif 303#endif
347 304
348 FD_ZERO (&tmp_read);
349 FD_ZERO (&tmp_write);
350
351 for (i = 0; i < socket_info.allocated_sockets; i++)
352 {
353 if (init_sockets[i].status == Ns_Dead)
354 {
355 free_newsocket (&init_sockets[i]);
356 init_sockets[i].status = Ns_Avail;
357 socket_info.nconns--;
358 }
359 else if (init_sockets[i].status != Ns_Avail)
360 {
361 FD_SET (init_sockets[i].fd, &tmp_read);
362 FD_SET (init_sockets[i].fd, &tmp_write);
363 }
364 }
365
366 /* Go through the players. Let the loop set the next pl value, 305 /* Go through the players. Let the loop set the next pl value,
367 * since we may remove some 306 * since we may remove some
368 */ 307 */
308 //TODO: must be handled cleanly elsewhere
369 for (pl = first_player; pl != NULL;) 309 for (pl = first_player; pl; )
370 { 310 {
311 player *npl = pl->next;
312
313 //TODO: must be handled cleanly elsewhere
371 if (pl->socket.status == Ns_Dead) 314 if (pl->socket->status == Ns_Dead)
372 { 315 {
373 player *npl = pl->next;
374
375 save_player (pl->ob, 0); 316 save_player (pl->ob, 0);
376 317
377 if (!QUERY_FLAG (pl->ob, FLAG_REMOVED)) 318 if (!QUERY_FLAG (pl->ob, FLAG_REMOVED))
378 { 319 {
379 terminate_all_pets (pl->ob); 320 terminate_all_pets (pl->ob);
380 pl->ob->remove (); 321 pl->ob->remove ();
381 } 322 }
382 323
383 leave (pl, 1); 324 leave (pl, 1);
384 final_free_player (pl); 325 final_free_player (pl);
326 }
327
385 pl = npl; 328 pl = npl;
329 }
330
331 FD_ZERO (&tmp_read);
332
333 for (sockvec::iterator i = client_sockets.begin (); i != client_sockets.end (); )
334 {
335 client_socket *s = *i;
336
337 if (s->status == Ns_Dead)
338 {
339 client_sockets.erase (i);
340 delete s;
386 } 341 }
387 else 342 else
388 { 343 {
344 if (s->fd > maxfd) maxfd = s->fd;
345
389 FD_SET ((uint32) pl->socket.fd, &tmp_read); 346 FD_SET (s->fd, &tmp_read);
390 FD_SET ((uint32) pl->socket.fd, &tmp_write); 347
391 pl = pl->next; 348 ++i;
392 } 349 }
393 } 350 }
394 351
395 /* Reset timeout each time, since some OS's will change the values on 352 struct timeval timeout;
396 * the return from select. 353
397 */
398 socket_info.timeout.tv_sec = 0; 354 timeout.tv_sec = 0;
399 socket_info.timeout.tv_usec = 0; 355 timeout.tv_usec = 0;
400 356
401 pollret = select (socket_info.max_filedescriptor, 357 pollret = select (maxfd + 1,
402 &tmp_read, &tmp_write, 0, 358 &tmp_read, 0, 0,
403 &socket_info.timeout); 359 &timeout);
404 360
405 if (pollret == -1) 361 if (pollret == -1)
406 { 362 {
407 LOG (llevError, "select failed: %s\n", strerror (errno)); 363 LOG (llevError, "select failed: %s\n", strerror (errno));
408 return; 364 return;
409 } 365 }
410 366
411 /* We need to do some of the processing below regardless */ 367 /* We need to do some of the processing below regardless */
412 368
413/* if (!pollret) return;*/ 369 /* Check for any input on the sockets */
414 370 for (sockvec::iterator i = client_sockets.begin (); i != client_sockets.end (); ++i)
415 /* Following adds a new connection */
416 if (pollret && FD_ISSET (init_sockets[0].fd, &tmp_read))
417 { 371 {
418 int newsocknum = 0; 372 client_socket *s = *i;
373 player *pl = s->pl;
419 374
420#ifdef ESRV_DEBUG 375 //TODO: disassociate handleclient from socket readin
421 LOG (llevDebug, "doeric_server: New Connection\n"); 376 if (s->inbuf_len || FD_ISSET (s->fd, &tmp_read))
422#endif
423 /* If this is the case, all sockets currently in used */
424 if (socket_info.allocated_sockets <= socket_info.nconns)
425 {
426 init_sockets = (NewSocket *) realloc (init_sockets, sizeof (NewSocket) * (socket_info.nconns + 1));
427 if (!init_sockets)
428 fatal (OUT_OF_MEMORY);
429 newsocknum = socket_info.allocated_sockets;
430 socket_info.allocated_sockets++;
431 init_sockets[newsocknum].faces_sent_len = nrofpixmaps;
432 init_sockets[newsocknum].faces_sent = (uint8 *) malloc (nrofpixmaps * sizeof (*init_sockets[newsocknum].faces_sent));
433 if (!init_sockets[newsocknum].faces_sent)
434 fatal (OUT_OF_MEMORY);
435 init_sockets[newsocknum].status = Ns_Avail;
436 }
437 else
438 {
439 int j;
440
441 for (j = 1; j < socket_info.allocated_sockets; j++)
442 if (init_sockets[j].status == Ns_Avail)
443 {
444 newsocknum = j;
445 break;
446 }
447 }
448
449 init_sockets[newsocknum].fd = accept (init_sockets[0].fd, (struct sockaddr *) &addr, &addrlen);
450
451 if (init_sockets[newsocknum].fd == -1)
452 LOG (llevError, "accept failed: %s\n", strerror (errno));
453 else
454 {
455 char buf[MAX_BUF];
456 long ip;
457 NewSocket *ns;
458
459 ns = &init_sockets[newsocknum];
460
461 ip = ntohl (addr.sin_addr.s_addr);
462 sprintf (buf, "%ld.%ld.%ld.%ld", (ip >> 24) & 255, (ip >> 16) & 255, (ip >> 8) & 255, ip & 255);
463
464 if (checkbanned (NULL, buf))
465 {
466 LOG (llevInfo, "Banned host tried to connect: [%s]\n", buf);
467 close (init_sockets[newsocknum].fd);
468 init_sockets[newsocknum].fd = -1;
469 }
470 else
471 {
472 InitConnection (ns, buf);
473 socket_info.nconns++;
474 }
475 }
476 }
477
478 /* Check for any input on the sockets */
479 if (pollret)
480 for (i = 1; i < socket_info.allocated_sockets; i++)
481 {
482 if (init_sockets[i].status == Ns_Avail)
483 continue;
484
485 if (FD_ISSET (init_sockets[i].fd, &tmp_read))
486 HandleClient (&init_sockets[i], NULL);
487
488 if (FD_ISSET (init_sockets[i].fd, &tmp_write))
489 init_sockets[i].can_write = 1;
490 }
491
492 /* This does roughly the same thing, but for the players now */
493 for (pl = first_player; pl != NULL; pl = next)
494 {
495
496 next = pl->next;
497 if (pl->socket.status == Ns_Dead)
498 continue;
499
500 if (FD_ISSET (pl->socket.fd, &tmp_write))
501 {
502 if (!pl->socket.can_write)
503 {
504#if 0
505 LOG (llevDebug, "Player %s socket now write enabled\n", pl->ob->name);
506#endif
507 pl->socket.can_write = 1;
508 write_socket_buffer (&pl->socket);
509 }
510
511 /* if we get an error on the write_socket buffer, no reason to
512 * continue on this socket.
513 */
514 if (pl->socket.status == Ns_Dead)
515 continue;
516 }
517 else
518 pl->socket.can_write = 0;
519
520 HandleClient (&pl->socket, pl); 377 HandleClient (s, pl);
521 /* If the player has left the game, then the socket status 378
522 * will be set to this be the leave function. We don't 379 //TODO: should not be done here, either
523 * need to call leave again, as it has already been called
524 * once.
525 */
526 if (pl->socket.status == Ns_Dead) 380 if (s->status != Ns_Dead && pl)
527 {
528 save_player (pl->ob, 0);
529
530 if (!QUERY_FLAG (pl->ob, FLAG_REMOVED))
531 {
532 terminate_all_pets (pl->ob);
533 pl->ob->remove ();
534 }
535
536 leave (pl, 1);
537 final_free_player (pl);
538 }
539 else
540 { 381 {
541 /* Update the players stats once per tick. More efficient than 382 /* Update the players stats once per tick. More efficient than
542 * sending them whenever they change, and probably just as useful 383 * sending them whenever they change, and probably just as useful
543 */ 384 */
544 esrv_update_stats (pl); 385 esrv_update_stats (pl);
… …
552 393
553 /* draw_client_map does sanity checking that map is 394 /* draw_client_map does sanity checking that map is
554 * valid, so don't do it here. 395 * valid, so don't do it here.
555 */ 396 */
556 draw_client_map (pl->ob); 397 draw_client_map (pl->ob);
557 if (pl->socket.update_look) 398 if (s->update_look)
558 esrv_draw_look (pl->ob); 399 esrv_draw_look (pl->ob);
559 } 400 }
560 } 401 }
561} 402}
562 403

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