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Comparing deliantra/server/socket/loop.C (file contents):
Revision 1.3 by root, Tue Aug 29 08:01:38 2006 UTC vs.
Revision 1.17 by root, Fri Dec 15 03:53:44 2006 UTC

1
2/*
3 * static char *rcsid_loop_c =
4 * "$Id: loop.C,v 1.3 2006/08/29 08:01:38 root Exp $";
5 */
6
7/* 1/*
8 CrossFire, A Multiplayer game for X-windows 2 CrossFire, A Multiplayer game for X-windows
9 3
10 Copyright (C) 2002-2003 Mark Wedel & The Crossfire Development Team 4 Copyright (C) 2002-2003 Mark Wedel & The Crossfire Development Team
11 Copyright (C) 1992 Frank Tore Johansen 5 Copyright (C) 1992 Frank Tore Johansen
… …
22 16
23 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
24 along with this program; if not, write to the Free Software 18 along with this program; if not, write to the Free Software
25 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 20
27 The author can be reached via e-mail to crossfire-devel@real-time.com 21 The author can be reached via e-mail to <crossfire@schmorp.de>
28*/ 22*/
29 23
30/** 24/**
31 * \file 25 * \file
32 * Main client/server loops. 26 * Main client/server loops.
… …
38 * The reading of data is handled in ericserver.c 32 * The reading of data is handled in ericserver.c
39 */ 33 */
40 34
41 35
42#include <global.h> 36#include <global.h>
43#ifndef __CEXTRACT__
44#include <sproto.h> 37#include <sproto.h>
45#include <sockproto.h> 38#include <sockproto.h>
46#endif
47 39
48#ifndef WIN32 /* ---win32 exclude unix headers */
49#include <sys/types.h> 40#include <sys/types.h>
50#include <sys/time.h> 41#include <sys/time.h>
51#include <sys/socket.h> 42#include <sys/socket.h>
52#include <netinet/in.h> 43#include <netinet/in.h>
53#include <netdb.h> 44#include <netdb.h>
54#endif /* end win32 */
55 45
56#ifdef HAVE_UNISTD_H
57#include <unistd.h> 46#include <unistd.h>
58#endif
59
60#ifdef HAVE_ARPA_INET_H
61#include <arpa/inet.h> 47#include <arpa/inet.h>
62#endif
63 48
64#include <loader.h> 49#include <loader.h>
65#include <newserver.h> 50#include <newserver.h>
66 51
67/***************************************************************************** 52/*****************************************************************************
… …
75 * before player joins, and those happen after the player has joined. 60 * before player joins, and those happen after the player has joined.
76 * As such, we have function types that might be called, so 61 * As such, we have function types that might be called, so
77 * we end up having 2 tables. 62 * we end up having 2 tables.
78 */ 63 */
79 64
80typedef void (*func_uint8_int_ns) (char*, int, NewSocket *); 65enum {
81 66 PF_PLAYER = 0x01, // must have valid player
82struct NsCmdMapping { 67 PF_IMMEDIATE = 0x02, // TODO: hack, can be executed immediately
83 const char *cmdname; 68 PF_PLAYING = 0x04, // must be in playing state
84 func_uint8_int_ns cmdproc;
85}; 69};
86 70
87typedef void (*func_uint8_int_pl)(char*, int, player *); 71struct pkt_type
88struct PlCmdMapping { 72{
89 const char *cmdname; 73 const char *name;
90 func_uint8_int_pl cmdproc; 74 void *cb;
91 uint8 flag; 75 int flags;
76
77 bool may_execute (client_socket *ns)
78 {
79 return (!(flags & PF_PLAYER) || ns->pl)
80 && (!(flags & PF_PLAYING) || (ns->pl && ns->pl->state == ST_PLAYING));
81 }
82
83 void execute (client_socket *ns, char *data, int datalen)
84 {
85 //TODO: only one format
86 if (flags & PF_PLAYER)
87 ((void (*)(char *, int, player * ))cb)((char *)data, datalen, ns->pl);
88 else
89 ((void (*)(char *, int, client_socket *))cb)((char *)data, datalen, ns);
90 }
92}; 91};
93 92
93// SocketCommand, PlayingCommand, should not exist with those ugly casts
94#define SC(cb) (void *)static_cast<void (*)(char *, int, client_socket *)>(cb),
95#define PC(cb) (void *)static_cast<void (*)(char *, int, player *)>(cb), PF_PLAYER |
96
94/** 97/**
95 * Dispatch table for the server. 98 * Dispatch table for the server.
96 * 99 */
97 * CmdMapping is the dispatch table for the server, used in HandleClient, 100static struct pkt_type packets[] = {
98 * which gets called when the client has input. All commands called here 101 {"ncom", PC(NewPlayerCmd) PF_PLAYING },
99 * use the same parameter form (char* data, int len, int clientnum. 102 {"command", PC(PlayerCmd) PF_PLAYING },
100 * We do implicit casts, because the data that is being passed is
101 * unsigned (pretty much needs to be for binary data), however, most
102 * of these treat it only as strings, so it makes things easier
103 * to cast it here instead of a bunch of times in the function itself.
104 * flag is 1 if the player must be in the playing state to issue the
105 * command, 0 if they can issue it at any time.
106 */
107static struct PlCmdMapping plcommands[] = {
108 { "examine", ExamineCmd, 1},
109 { "apply", ApplyCmd, 1},
110 { "move", MoveCmd, 1},
111 { "reply", ReplyCmd, 0},
112 { "command", PlayerCmd, 1},
113 { "ncom", (func_uint8_int_pl)NewPlayerCmd, 1},
114 { "lookat", LookAt, 1},
115 { "lock", (func_uint8_int_pl)LockItem, 1},
116 { "mark", (func_uint8_int_pl)MarkItem, 1},
117 { "mapredraw", MapRedrawCmd, 0}, /* Added: phil */
118 { "mapinfo", MapInfoCmd, 2}, /* CF+ */
119 { "ext", ExtCmd, 2}, /* CF+ */
120 { NULL, NULL, 0} /* terminator */
121};
122 103
123/** Face-related commands */ 104 {"examine", PC(ExamineCmd) PF_PLAYING | PF_IMMEDIATE },
124static struct NsCmdMapping nscommands[] = { 105 {"apply", PC(ApplyCmd) PF_PLAYING | PF_IMMEDIATE },
125 { "addme", AddMeCmd }, 106 {"reply", PC(ReplyCmd) PF_IMMEDIATE },
107 {"lookat", PC(LookAt) PF_PLAYING | PF_IMMEDIATE },
108 {"lock", PC(LockItem) PF_PLAYING | PF_IMMEDIATE },
109 {"mark", PC(MarkItem) PF_PLAYING | PF_IMMEDIATE },
110 {"move", PC(MoveCmd) PF_PLAYING | PF_IMMEDIATE },
111 {"ext", PC(ExtCmd) PF_IMMEDIATE }, /* CF+ */
112 {"mapredraw", PC(MapRedrawCmd) PF_IMMEDIATE }, /* Added: phil */
113 {"mapinfo", PC(MapInfoCmd) PF_IMMEDIATE }, /* CF+ */
114
115 {"addme", SC(AddMeCmd) PF_IMMEDIATE },
126 { "askface", SendFaceCmd}, /* Added: phil */ 116 {"askface", SC(SendFaceCmd) 0 }, /* Added: phil */
127 { "requestinfo", RequestInfo}, 117 {"requestinfo", SC(RequestInfo) 0 },
128 { "setfacemode", SetFaceMode}, 118 {"setfacemode", SC(SetFaceMode) PF_IMMEDIATE },
129 { "setsound", SetSound}, 119 {"setsound", SC(SetSound) PF_IMMEDIATE },
130 { "setup", SetUp}, 120 {"setup", SC(SetUp) PF_IMMEDIATE },
131 { "version", VersionCmd }, 121 {"version", SC(VersionCmd) PF_IMMEDIATE },
132 { "toggleextendedinfos", ToggleExtendedInfos}, /*Added: tchize*/ 122 {"toggleextendedinfos", SC(ToggleExtendedInfos) PF_IMMEDIATE }, /*Added: tchize */
133 { "toggleextendedtext", ToggleExtendedText}, /*Added: tchize*/ 123 {"toggleextendedtext", SC(ToggleExtendedText) PF_IMMEDIATE }, /*Added: tchize */
134 { "asksmooth", AskSmooth}, /*Added: tchize (smoothing technologies)*/ 124 {"asksmooth", SC(AskSmooth) 0 }, /*Added: tchize (smoothing technologies) */
135 { NULL, NULL} /* terminator (I, II & III)*/
136}; 125};
137 126
138/** 127/**
139 * RequestInfo is sort of a meta command. There is some specific 128 * RequestInfo is sort of a meta command. There is some specific
140 * request of information, but we call other functions to provide 129 * request of information, but we call other functions to provide
141 * that information. 130 * that information.
142 */ 131 */
132void
143void RequestInfo(char *buf, int len, NewSocket *ns) 133RequestInfo (char *buf, int len, client_socket * ns)
144{ 134{
145 char *params=NULL, *cp; 135 char *params = NULL, *cp;
136
146 /* No match */ 137 /* No match */
147 char bigbuf[MAX_BUF]; 138 char bigbuf[MAX_BUF];
148 int slen; 139 int slen;
149 140
150 /* Set up replyinfo before we modify any of the buffers - this is used 141 /* Set up replyinfo before we modify any of the buffers - this is used
151 * if we don't find a match. 142 * if we don't find a match.
152 */ 143 */
153 strcpy(bigbuf,"replyinfo "); 144 strcpy (bigbuf, "replyinfo ");
154 slen = strlen(bigbuf); 145 slen = strlen (bigbuf);
155 safe_strcat(bigbuf, buf, &slen, MAX_BUF); 146 safe_strcat (bigbuf, buf, &slen, MAX_BUF);
156 147
157 /* find the first space, make it null, and update the 148 /* find the first space, make it null, and update the
158 * params pointer. 149 * params pointer.
159 */ 150 */
160 for (cp = buf; *cp != '\0'; cp++) 151 for (cp = buf; *cp != '\0'; cp++)
161 if (*cp==' ') { 152 if (*cp == ' ')
153 {
162 *cp = '\0'; 154 *cp = '\0';
163 params = cp + 1; 155 params = cp + 1;
164 break; 156 break;
165 } 157 }
166 if (!strcmp(buf, "image_info")) send_image_info(ns, params); 158
167 else if (!strcmp(buf,"image_sums")) send_image_sums(ns, params); 159 if (!strcmp (buf, "image_info"))
168 else if (!strcmp(buf,"skill_info")) send_skill_info(ns, params); 160 send_image_info (ns, params);
169 else if (!strcmp(buf,"spell_paths")) send_spell_paths(ns, params); 161 else if (!strcmp (buf, "image_sums"))
170 else Write_String_To_Socket(ns, bigbuf, len); 162 send_image_sums (ns, params);
163 else if (!strcmp (buf, "skill_info"))
164 send_skill_info (ns, params);
165 else if (!strcmp (buf, "spell_paths"))
166 send_spell_paths (ns, params);
167 else
168 ns->send_packet (bigbuf, len);
171} 169}
172
173/**
174 * Handles old socket format.
175 */
176void Handle_Oldsocket(NewSocket *ns)
177{
178 int stat,i;
179 CommFunc command;
180 char buf[MAX_BUF],*cp;
181 object ob;
182 player pl;
183
184 /* This is not the most efficient block, but keeps the code simpler -
185 * we basically read a byte at a time until we get a newline, error,
186 * or no more characters to read.
187 */
188 do {
189 /* hack to disable old socket mode without creating too many conflicts */
190 if (1 || ns->inbuf.len >= MAXSOCKBUF-1) {
191 ns->status = Ns_Dead;
192 LOG(llevDebug, "Old input socket sent too much data without newline\n");
193 return;
194 }
195#ifdef WIN32 /* ***win32: change oldsocket read() to recv() */
196 stat = recv(ns->fd, ns->inbuf.buf + ns->inbuf.len, 1,0);
197
198 if (stat==-1 && WSAGetLastError() !=WSAEWOULDBLOCK) {
199#else
200 do {
201 stat = read(ns->fd, ns->inbuf.buf + ns->inbuf.len, 1);
202 } while ((stat<0) && (errno == EINTR));
203
204 if (stat<0 && errno != EAGAIN && errno !=EWOULDBLOCK) {
205#endif
206 LOG(llevError, "Cannot read from socket: %s\n", strerror_local(errno));
207 ns->status = Ns_Dead;
208 return;
209 }
210 if (stat == 0) return;
211 } while (ns->inbuf.buf[ns->inbuf.len++]!='\n');
212
213 ns->inbuf.buf[ns->inbuf.len]=0;
214
215 cp = strchr((const char*)ns->inbuf.buf, ' ');
216 if (cp) {
217 /* Replace the space with a null, skip any more spaces */
218 *cp++=0;
219 while (isspace(*cp)) cp++;
220 }
221
222 /* Strip off all spaces and control characters from end of line */
223 for (i=ns->inbuf.len-1; i>=0; i--) {
224 if (ns->inbuf.buf[i]<=32) ns->inbuf.buf[i]=0;
225 else break;
226 }
227 ns->inbuf.len=0; /* reset for next read */
228
229 /* If just a return, don't do anything */
230 if (ns->inbuf.buf[0] == 0) return;
231 if (!strcasecmp((const char*)ns->inbuf.buf,"quit")) {
232 ns->status = Ns_Dead;
233 return;
234 }
235 if (!strcasecmp((const char*)ns->inbuf.buf, "listen")) {
236 if (cp) {
237 char *buf="Socket switched to listen mode\n";
238
239 free(ns->comment);
240 ns->comment = strdup_local(cp);
241 ns->old_mode = Old_Listen;
242 cs_write_string(ns, buf, strlen(buf));
243 } else {
244 char *buf="Need to supply a comment/url to listen\n";
245 cs_write_string(ns, buf, strlen(buf));
246 }
247 return;
248 }
249 if (!strcasecmp((const char*)ns->inbuf.buf, "name")) {
250 char *cp1=NULL;
251 if (cp) cp1= strchr(cp, ' ');
252 if (cp1) {
253 *cp1++ = 0;
254 while (isspace(*cp1)) cp1++;
255 }
256 if (!cp || !cp1) {
257 char *buf="Need to provide a name/password to name\n";
258 cs_write_string(ns, buf, strlen(buf));
259 return;
260 }
261
262 if (verify_player(cp, cp1)==0) {
263 char *buf="Welcome back\n";
264 free(ns->comment);
265 ns->comment = strdup_local(cp);
266 ns->old_mode = Old_Player;
267 cs_write_string(ns, buf, strlen(buf));
268 }
269 else if (verify_player(cp, cp1)==2) {
270 ns->password_fails++;
271 if (ns->password_fails >= MAX_PASSWORD_FAILURES) {
272 char *buf="You failed to log in too many times, you will now be kicked.\n";
273 LOG(llevInfo, "A player connecting from %s in oldsocketmode has been dropped for password failure\n",
274 ns->host);
275 cs_write_string(ns, buf, strlen(buf));
276 ns->status = Ns_Dead;
277 }
278 else {
279 char *buf="Could not login you in. Check your name and password.\n";
280 cs_write_string(ns, buf, strlen(buf));
281 }
282 }
283 else {
284 char *buf="Could not login you in. Check your name and password.\n";
285 cs_write_string(ns, buf, strlen(buf));
286 }
287 return;
288 }
289
290 command = find_oldsocket_command((char*)ns->inbuf.buf);
291 if (!command && ns->old_mode==Old_Player) {
292 command = find_oldsocket_command2((char*)ns->inbuf.buf);
293 }
294 if (!command) {
295 snprintf(buf, sizeof(buf), "Could not find command: %s\n", ns->inbuf.buf);
296 cs_write_string(ns, buf, strlen(buf));
297 return;
298 }
299
300 /* This is a bit of a hack, but works. Basically, we make some
301 * fake object and player pointers and give at it.
302 * This works as long as the functions we are calling don't need
303 * to do anything to the object structure (ie, they are only
304 * outputting information and not actually updating anything much.)
305 */
306 ob.contr = &pl;
307 pl.ob = &ob;
308 ob.type = PLAYER;
309 pl.listening = 10;
310 pl.socket = *ns;
311 pl.outputs_count = 1;
312 ob.name = ns->comment;
313
314 command(&ob, cp);
315}
316
317 170
318/** 171/**
319 * Handle client input. 172 * Handle client input.
320 * 173 *
321 * HandleClient is actually not named really well - we only get here once 174 * HandleClient is actually not named really well - we only get here once
… …
323 * sock is the output socket information. pl is the player associated 176 * sock is the output socket information. pl is the player associated
324 * with this socket, null if no player (one of the init_sockets for just 177 * with this socket, null if no player (one of the init_sockets for just
325 * starting a connection) 178 * starting a connection)
326 */ 179 */
327 180
181void
328void HandleClient(NewSocket *ns, player *pl) 182HandleClient (client_socket *ns, player *pl)
329{ 183{
330 int len=0,i,cnt;
331 char *data;
332
333 /* Loop through this - maybe we have several complete packets here. */ 184 /* Loop through this - maybe we have several complete packets here. */
334 // limit to a few commands only, though, as to not monopolise the server 185 // limit to a few commands only, though, as to not monopolise the server
335 for (cnt = 16; cnt--; ) { 186 for (int repeat = 16; repeat--;)
187 {
336 /* If it is a player, and they don't have any speed left, we 188 /* If it is a player, and they don't have any speed left, we
337 * return, and will read in the data when they do have time. 189 * return, and will read in the data when they do have time.
338 */ 190 */
339 if (pl && pl->state==ST_PLAYING && pl->ob != NULL && pl->ob->speed_left < 0) { 191 if (pl && pl->state == ST_PLAYING && pl->ob && pl->ob->speed_left < 0)
340 return; 192 return;
193
194 int pkt_len = ns->read_packet ();
195
196 if (pkt_len < 0)
341 } 197 {
342 198 LOG (llevError, "read error on player %s\n", &pl->ob->name);
343 if (ns->status == Ns_Old) {
344 Handle_Oldsocket(ns);
345 return;
346 }
347 i=SockList_ReadPacket(ns->fd, &ns->inbuf, MAXSOCKBUF-1);
348 /* Special hack - let the user switch to old mode if in the Ns_Add
349 * phase. Don't demand they add in the special length bytes
350 */
351 if (ns->status == Ns_Add) {
352 if (!strncasecmp((const char*)ns->inbuf.buf,"oldsocketmode", 13)) {
353 ns->status = Ns_Old;
354 ns->inbuf.len=0;
355 cs_write_string(ns, "Switched to old socket mode\n", 28);
356 LOG(llevDebug,"Switched socket to old socket mode\n");
357 return;
358 }
359 }
360
361 if (i<0) {
362#ifdef ESRV_DEBUG
363 LOG(llevDebug,"HandleClient: Read error on connection player %s\n", (pl?pl->ob->name:"None"));
364#endif
365 /* Caller will take care of cleaning this up */ 199 /* Caller will take care of cleaning this up */
366 ns->status =Ns_Dead; 200 ns->status = Ns_Dead;
367 return; 201 return;
368 } 202 }
203 else if (pkt_len == 0)
369 /* Still dont have a full packet */ 204 /* Still dont have a full packet */
370 if (i==0) return; 205 return;
371 206
372// //D//TODO//temporarily log long commands
373// if (ns->inbuf.len >= 40 && pl && pl->ob)
374// LOG (llevDebug, "HandleClient: long comamnd from <%s,%s> %d<%s>\n", pl->ob->name, ns->host, ns->inbuf.len, ns->inbuf.buf + 2);
375
376 /* First, break out beginning word. There are at least 207 /* First, break out beginning word. There are at least
377 * a few commands that do not have any paremeters. If 208 * a few commands that do not have any paremeters. If
378 * we get such a command, don't worry about trying 209 * we get such a command, don't worry about trying
379 * to break it up. 210 * to break it up.
380 */ 211 */
212 int datalen;
381 data = (char *)strchr((char*)ns->inbuf.buf +2, ' '); 213 char *data = strchr ((char *)ns->inbuf + 2, ' ');
214
382 if (data) { 215 if (data)
383 *data='\0';
384 data++;
385 len = ns->inbuf.len - (data - (char*)ns->inbuf.buf);
386 } 216 {
387 else len=0; 217 *data++ = 0;
388 218 datalen = pkt_len - (data - (char *)ns->inbuf);
389 ns->inbuf.buf[ns->inbuf.len]='\0'; /* Terminate buffer - useful for string data */
390 for (i=0; nscommands[i].cmdname !=NULL; i++) {
391 if (strcmp((char*)ns->inbuf.buf+2,nscommands[i].cmdname)==0) {
392 nscommands[i].cmdproc((char*)data,len,ns);
393 ns->inbuf.len=0;
394 return;//D// not doing this causes random memory corruption
395 goto next_packet;
396 } 219 }
220 else
397 } 221 {
398 /* Player must be in the playing state or the flag on the 222 data = (char *)ns->inbuf + 2; // better read garbage than segfault
399 * the command must be zero for the user to use the command - 223 datalen = 0;
400 * otherwise, a player cam save, be in the play_again state, and 224 }
401 * the map they were on gets swapped out, yet things that try to look 225
402 * at the map causes a crash. If the command is valid, but 226 ns->inbuf [pkt_len] = 0; /* Terminate buffer - useful for string data */
403 * one they can't use, we still swallow it up. 227
228 for (pkt_type *pkt = packets; pkt < packets + (sizeof (packets) / sizeof (packets[0])); ++pkt)
229 if (!strcmp ((char *)ns->inbuf + 2, pkt->name))
404 */ 230 {
405 if (pl) for (i=0; plcommands[i].cmdname !=NULL; i++) { 231 if (pkt->may_execute (ns))
406 if (strcmp((char*)ns->inbuf.buf+2,plcommands[i].cmdname)==0) { 232 {
407 if (pl->state == ST_PLAYING || !(plcommands[i].flag & 1)) 233 pkt->execute (ns, data, datalen);
408 plcommands[i].cmdproc((char*)data,len,pl); 234 ns->skip_packet (pkt_len);
409 ns->inbuf.len=0;
410 //D// not doing this causes random memory corruption 235 //D//TODO not doing this causes random memory corruption
411 if (plcommands[i].flag & 2) 236 if (pkt->flags & PF_IMMEDIATE)
412 goto next_packet; 237 goto next_packet;
413 return; 238 return;
414 } 239 }
415 } 240 }
241
416 /* If we get here, we didn't find a valid command. Logging 242 /* If we get here, we didn't find a valid command. Logging
417 * this might be questionable, because a broken client/malicious 243 * this might be questionable, because a broken client/malicious
418 * user could certainly send a whole bunch of invalid commands. 244 * user could certainly send a whole bunch of invalid commands.
419 */ 245 */
420 LOG(llevDebug,"Bad command from client (%s)\n",ns->inbuf.buf+2); 246 LOG (llevDebug, "Bad command from client (%s)\n", ns->inbuf + 2);
247 ns->skip_packet (pkt_len);
421 next_packet: 248 next_packet:
422 ; 249 ;
423 } 250 }
424} 251}
425 252
426 253void
427/***************************************************************************** 254flush_sockets (void)
428 *
429 * Low level socket looping - select calls and watchdog udp packet
430 * sending.
431 *
432 ******************************************************************************/
433
434#ifdef WATCHDOG
435/**
436 * Tell watchdog that we are still alive
437 *
438 * I put the function here since we should hopefully already be getting
439 * all the needed include files for socket support
440 */
441
442void watchdog(void)
443{ 255{
444 static int fd=-1; 256 for (sockvec::iterator i = client_sockets.begin (); i != client_sockets.end (); ++i)
445 static struct sockaddr_in insock; 257 if ((*i)->status != Ns_Dead)
446 258 (*i)->flush ();
447 if (fd==-1)
448 {
449 struct protoent *protoent;
450
451 if ((protoent=getprotobyname("udp"))==NULL ||
452 (fd=socket(PF_INET, SOCK_DGRAM, protoent->p_proto))==-1)
453 {
454 return;
455 }
456 insock.sin_family=AF_INET;
457 insock.sin_port=htons((unsigned short)13325);
458 insock.sin_addr.s_addr=inet_addr("127.0.0.1");
459 }
460 sendto(fd,(void *)&fd,1,0,(struct sockaddr *)&insock,sizeof(insock));
461} 259}
462#endif
463 260
464void flush_sockets(void)
465{
466 player *pl;
467
468 for (pl = first_player; pl != NULL; pl = pl->next)
469 if (pl->socket.status != Ns_Dead)
470 Socket_Flush (&pl->socket);
471}
472
473/** 261/**
474 * This checks the sockets for input and exceptions, does the right thing. 262 * This checks the sockets for input, does the right thing.
475 * 263 *
476 * A bit of this code is grabbed out of socket.c 264 * A bit of this code is grabbed out of socket.c
477 * There are 2 lists we need to look through - init_sockets is a list 265 * There are 2 lists we need to look through - init_sockets is a list
478 * 266 *
479 */ 267 */
268void
480void doeric_server(void) 269doeric_server (void)
481{ 270{
482 int i, pollret; 271 int i, pollret;
483 fd_set tmp_read, tmp_exceptions, tmp_write; 272 fd_set tmp_read;
484 struct sockaddr_in addr; 273 struct sockaddr_in addr;
485 socklen_t addrlen=sizeof(struct sockaddr); 274 socklen_t addrlen = sizeof (struct sockaddr);
486 player *pl, *next; 275 player *pl, *next;
276 int maxfd = 0;
487 277
488#ifdef CS_LOGSTATS 278#ifdef CS_LOGSTATS
489 if ((time(NULL)-cst_lst.time_start)>=CS_LOGTIME) 279 if ((time (NULL) - cst_lst.time_start) >= CS_LOGTIME)
490 write_cs_stats(); 280 write_cs_stats ();
491#endif 281#endif
492 282
493 FD_ZERO(&tmp_read);
494 FD_ZERO(&tmp_write);
495 FD_ZERO(&tmp_exceptions);
496
497 for(i=0;i<socket_info.allocated_sockets;i++) {
498 if (init_sockets[i].status == Ns_Dead) {
499 free_newsocket(&init_sockets[i]);
500 init_sockets[i].status = Ns_Avail;
501 socket_info.nconns--;
502 } else if (init_sockets[i].status != Ns_Avail){
503 FD_SET((uint32)init_sockets[i].fd, &tmp_read);
504 FD_SET((uint32)init_sockets[i].fd, &tmp_write);
505 FD_SET((uint32)init_sockets[i].fd, &tmp_exceptions);
506 }
507 }
508
509 /* Go through the players. Let the loop set the next pl value, 283 /* Go through the players. Let the loop set the next pl value,
510 * since we may remove some 284 * since we may remove some
511 */ 285 */
286 //TODO: must be handled cleanly elsewhere
512 for (pl=first_player; pl!=NULL; ) { 287 for (pl = first_player; pl; )
288 {
289 player *npl = pl->next;
290
291 //TODO: must be handled cleanly elsewhere
513 if (pl->socket.status == Ns_Dead) { 292 if (pl->socket->status == Ns_Dead)
514 player *npl=pl->next; 293 {
515
516 save_player(pl->ob, 0); 294 save_player (pl->ob, 0);
295
517 if(!QUERY_FLAG(pl->ob,FLAG_REMOVED)) { 296 if (!QUERY_FLAG (pl->ob, FLAG_REMOVED))
297 {
518 terminate_all_pets(pl->ob); 298 terminate_all_pets (pl->ob);
519 remove_ob(pl->ob); 299 pl->ob->remove ();
520 } 300 }
301
521 leave(pl,1); 302 leave (pl, 1);
522 final_free_player(pl); 303 final_free_player (pl);
304 }
305
523 pl=npl; 306 pl = npl;
307 }
308
309 FD_ZERO (&tmp_read);
310
311 for (sockvec::iterator i = client_sockets.begin (); i != client_sockets.end (); )
312 {
313 client_socket *s = *i;
314
315 if (s->status == Ns_Dead)
524 } 316 {
317 client_sockets.erase (i);
318 delete s;
319 }
525 else { 320 else
526 FD_SET((uint32)pl->socket.fd, &tmp_read);
527 FD_SET((uint32)pl->socket.fd, &tmp_write);
528 FD_SET((uint32)pl->socket.fd, &tmp_exceptions);
529 pl=pl->next;
530 } 321 {
531 } 322 if (s->fd > maxfd) maxfd = s->fd;
532 323
533 /* Reset timeout each time, since some OS's will change the values on 324 FD_SET (s->fd, &tmp_read);
534 * the return from select. 325
535 */ 326 ++i;
536 socket_info.timeout.tv_sec = 0; 327 }
328 }
329
330 struct timeval timeout;
331
332 timeout.tv_sec = 0;
537 socket_info.timeout.tv_usec = 0; 333 timeout.tv_usec = 0;
538 334
539 pollret= select(socket_info.max_filedescriptor, &tmp_read, &tmp_write, 335 pollret = select (maxfd + 1,
540 &tmp_exceptions, &socket_info.timeout); 336 &tmp_read, 0, 0,
337 &timeout);
541 338
542 if (pollret==-1) { 339 if (pollret == -1)
340 {
543 LOG(llevError, "select failed: %s\n", strerror_local(errno)); 341 LOG (llevError, "select failed: %s\n", strerror (errno));
544 return; 342 return;
545 } 343 }
546 344
547 /* We need to do some of the processing below regardless */ 345 /* We need to do some of the processing below regardless */
548/* if (!pollret) return;*/
549 346
550 /* Following adds a new connection */ 347 /* Check for any input on the sockets */
551 if (pollret && FD_ISSET(init_sockets[0].fd, &tmp_read)) { 348 for (sockvec::iterator i = client_sockets.begin (); i != client_sockets.end (); ++i)
552 int newsocknum=0; 349 {
350 client_socket *s = *i;
351 player *pl = s->pl;
553 352
554#ifdef ESRV_DEBUG 353 //TODO: disassociate handleclient from socket readin
555 LOG(llevDebug,"doeric_server: New Connection\n"); 354 if (s->inbuf_len || FD_ISSET (s->fd, &tmp_read))
556#endif 355 HandleClient (s, pl);
557 /* If this is the case, all sockets currently in used */ 356
558 if (socket_info.allocated_sockets <= socket_info.nconns) { 357 //TODO: should not be done here, either
559 init_sockets = (NewSocket *) realloc(init_sockets,sizeof(NewSocket)*(socket_info.nconns+1)); 358 if (s->status != Ns_Dead && pl)
560 if (!init_sockets) fatal(OUT_OF_MEMORY);
561 newsocknum = socket_info.allocated_sockets;
562 socket_info.allocated_sockets++;
563 init_sockets[newsocknum].faces_sent_len = nrofpixmaps;
564 init_sockets[newsocknum].faces_sent = (uint8*) malloc(nrofpixmaps*sizeof(*init_sockets[newsocknum].faces_sent));
565 if (!init_sockets[newsocknum].faces_sent) fatal(OUT_OF_MEMORY);
566 init_sockets[newsocknum].status = Ns_Avail;
567 } 359 {
568 else { 360 /* Update the players stats once per tick. More efficient than
569 int j; 361 * sending them whenever they change, and probably just as useful
570 362 */
571 for (j=1; j<socket_info.allocated_sockets; j++) 363 esrv_update_stats (pl);
572 if (init_sockets[j].status == Ns_Avail) { 364 if (pl->last_weight != -1 && pl->last_weight != WEIGHT (pl->ob))
573 newsocknum=j;
574 break;
575 } 365 {
576 } 366 esrv_update_item (UPD_WEIGHT, pl->ob, pl->ob);
577 init_sockets[newsocknum].fd=accept(init_sockets[0].fd, (struct sockaddr *)&addr, &addrlen); 367 if (pl->last_weight != WEIGHT (pl->ob))
578 if (init_sockets[newsocknum].fd==-1) { 368 LOG (llevError, "esrv_update_item(UPD_WEIGHT) did not set player weight: is %lu, should be %lu\n",
579 LOG(llevError, "accept failed: %s\n", strerror_local(errno)); 369 (unsigned long) pl->last_weight, WEIGHT (pl->ob));
580 }
581 else {
582 char buf[MAX_BUF];
583 long ip;
584 NewSocket *ns;
585
586 ns = &init_sockets[newsocknum];
587
588 ip = ntohl(addr.sin_addr.s_addr);
589 sprintf(buf, "%ld.%ld.%ld.%ld", (ip>>24)&255, (ip>>16)&255, (ip>>8)&255, ip&255);
590
591 if (checkbanned(NULL, buf)) {
592 LOG(llevInfo, "Banned host tried to connect: [%s]\n", buf);
593 close(init_sockets[newsocknum].fd);
594 init_sockets[newsocknum].fd = -1;
595 } 370 }
596 else {
597 InitConnection(ns, buf);
598 socket_info.nconns++;
599 }
600 }
601 }
602 371
603 /* Check for any exceptions/input on the sockets */
604 if (pollret) for(i=1;i<socket_info.allocated_sockets;i++) {
605 if (init_sockets[i].status == Ns_Avail) continue;
606 if (FD_ISSET(init_sockets[i].fd,&tmp_exceptions)) {
607 free_newsocket(&init_sockets[i]);
608 init_sockets[i].status = Ns_Avail;
609 socket_info.nconns--;
610 continue;
611 }
612 if (FD_ISSET(init_sockets[i].fd, &tmp_read)) {
613 HandleClient(&init_sockets[i], NULL);
614 }
615 if (FD_ISSET(init_sockets[i].fd, &tmp_write)) {
616 init_sockets[i].can_write=1;
617 }
618 }
619
620 /* This does roughly the same thing, but for the players now */
621 for (pl=first_player; pl!=NULL; pl=next) {
622
623 next=pl->next;
624 if (pl->socket.status==Ns_Dead) continue;
625
626 if (FD_ISSET(pl->socket.fd,&tmp_write)) {
627 if (!pl->socket.can_write) {
628#if 0
629 LOG(llevDebug,"Player %s socket now write enabled\n", pl->ob->name);
630#endif
631 pl->socket.can_write=1;
632 write_socket_buffer(&pl->socket);
633 }
634 /* if we get an error on the write_socket buffer, no reason to
635 * continue on this socket.
636 */
637 if (pl->socket.status==Ns_Dead) continue;
638 }
639 else pl->socket.can_write=0;
640
641 if (FD_ISSET(pl->socket.fd,&tmp_exceptions)) {
642 save_player(pl->ob, 0);
643 if(!QUERY_FLAG(pl->ob,FLAG_REMOVED)) {
644 terminate_all_pets(pl->ob);
645 remove_ob(pl->ob);
646 }
647 leave(pl,1);
648 final_free_player(pl);
649 }
650 else {
651 HandleClient(&pl->socket, pl);
652 /* If the player has left the game, then the socket status
653 * will be set to this be the leave function. We don't
654 * need to call leave again, as it has already been called
655 * once.
656 */
657 if (pl->socket.status==Ns_Dead) {
658 save_player(pl->ob, 0);
659 if(!QUERY_FLAG(pl->ob,FLAG_REMOVED)) {
660 terminate_all_pets(pl->ob);
661 remove_ob(pl->ob);
662 }
663 leave(pl,1);
664 final_free_player(pl);
665 } else {
666
667 /* Update the players stats once per tick. More efficient than
668 * sending them whenever they change, and probably just as useful
669 */
670 esrv_update_stats(pl);
671 if (pl->last_weight != -1 && pl->last_weight != WEIGHT(pl->ob)) {
672 esrv_update_item(UPD_WEIGHT, pl->ob, pl->ob);
673 if(pl->last_weight != WEIGHT(pl->ob))
674 LOG(llevError, "esrv_update_item(UPD_WEIGHT) did not set player weight: is %lu, should be %lu\n", (unsigned long)pl->last_weight, WEIGHT(pl->ob));
675 }
676 /* draw_client_map does sanity checking that map is 372 /* draw_client_map does sanity checking that map is
677 * valid, so don't do it here. 373 * valid, so don't do it here.
678 */ 374 */
679 draw_client_map(pl->ob); 375 draw_client_map (pl->ob);
680 if (pl->socket.update_look) esrv_draw_look(pl->ob); 376 if (s->update_look)
681 } 377 esrv_draw_look (pl->ob);
682 } 378 }
683 } 379 }
684} 380}
381

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