1 | |
|
|
2 | /* |
|
|
3 | * static char *rcsid_loop_c = |
|
|
4 | * "$Id: loop.C,v 1.4 2006/08/30 16:30:37 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 |
46 | #ifdef HAVE_UNISTD_H |
57 | #include <unistd.h> |
47 | # include <unistd.h> |
58 | #endif |
48 | #endif |
59 | |
49 | |
60 | #ifdef HAVE_ARPA_INET_H |
50 | #ifdef HAVE_ARPA_INET_H |
61 | #include <arpa/inet.h> |
51 | # include <arpa/inet.h> |
62 | #endif |
52 | #endif |
63 | |
53 | |
64 | #include <loader.h> |
54 | #include <loader.h> |
65 | #include <newserver.h> |
55 | #include <newserver.h> |
66 | |
56 | |
… | |
… | |
75 | * before player joins, and those happen after the player has joined. |
65 | * before player joins, and those happen after the player has joined. |
76 | * As such, we have function types that might be called, so |
66 | * As such, we have function types that might be called, so |
77 | * we end up having 2 tables. |
67 | * we end up having 2 tables. |
78 | */ |
68 | */ |
79 | |
69 | |
80 | typedef void (*func_uint8_int_ns) (char*, int, NewSocket *); |
70 | typedef void (*func_uint8_int_ns) (char *, int, client_socket *); |
81 | |
71 | |
82 | struct NsCmdMapping { |
72 | struct NsCmdMapping |
|
|
73 | { |
83 | const char *cmdname; |
74 | const char *cmdname; |
84 | func_uint8_int_ns cmdproc; |
75 | func_uint8_int_ns cmdproc; |
|
|
76 | uint8 flag; |
85 | }; |
77 | }; |
86 | |
78 | |
87 | typedef void (*func_uint8_int_pl)(char*, int, player *); |
79 | typedef void (*func_uint8_int_pl) (char *, int, player *); |
88 | struct PlCmdMapping { |
80 | struct PlCmdMapping |
|
|
81 | { |
89 | const char *cmdname; |
82 | const char *cmdname; |
90 | func_uint8_int_pl cmdproc; |
83 | func_uint8_int_pl cmdproc; |
91 | uint8 flag; |
84 | uint8 flag; |
92 | }; |
85 | }; |
93 | |
86 | |
94 | /** |
87 | /** |
95 | * Dispatch table for the server. |
88 | * Dispatch table for the server. |
96 | * |
89 | * |
… | |
… | |
103 | * to cast it here instead of a bunch of times in the function itself. |
96 | * 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 |
97 | * 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. |
98 | * command, 0 if they can issue it at any time. |
106 | */ |
99 | */ |
107 | static struct PlCmdMapping plcommands[] = { |
100 | static struct PlCmdMapping plcommands[] = { |
108 | { "examine", ExamineCmd, 1}, |
101 | {"examine", ExamineCmd, 1}, |
109 | { "apply", ApplyCmd, 1}, |
102 | {"apply", ApplyCmd, 1}, |
110 | { "move", MoveCmd, 1}, |
103 | {"move", MoveCmd, 1}, |
111 | { "reply", ReplyCmd, 0}, |
104 | {"reply", ReplyCmd, 0}, |
112 | { "command", PlayerCmd, 1}, |
105 | {"command", PlayerCmd, 1}, |
113 | { "ncom", (func_uint8_int_pl)NewPlayerCmd, 1}, |
106 | {"ncom", (func_uint8_int_pl) NewPlayerCmd, 1}, |
114 | { "lookat", LookAt, 1}, |
107 | {"lookat", LookAt, 1}, |
115 | { "lock", (func_uint8_int_pl)LockItem, 1}, |
108 | {"lock", (func_uint8_int_pl) LockItem, 1}, |
116 | { "mark", (func_uint8_int_pl)MarkItem, 1}, |
109 | {"mark", (func_uint8_int_pl) MarkItem, 1}, |
117 | { "mapredraw", MapRedrawCmd, 0}, /* Added: phil */ |
110 | {"mapredraw", MapRedrawCmd, 0}, /* Added: phil */ |
118 | { "mapinfo", MapInfoCmd, 2}, /* CF+ */ |
111 | {"mapinfo", MapInfoCmd, 2}, /* CF+ */ |
119 | { "ext", ExtCmd, 2}, /* CF+ */ |
112 | {"ext", ExtCmd, 2}, /* CF+ */ |
120 | { NULL, NULL, 0} /* terminator */ |
113 | { 0 } /* terminator */ |
121 | }; |
114 | }; |
122 | |
115 | |
123 | /** Face-related commands */ |
116 | /** Face-related commands */ |
124 | static struct NsCmdMapping nscommands[] = { |
117 | static struct NsCmdMapping nscommands[] = { |
125 | { "addme", AddMeCmd }, |
118 | {"addme", AddMeCmd, 2}, |
126 | { "askface", SendFaceCmd}, /* Added: phil */ |
119 | {"askface", SendFaceCmd}, /* Added: phil */ |
127 | { "requestinfo", RequestInfo}, |
120 | {"requestinfo", RequestInfo}, |
128 | { "setfacemode", SetFaceMode}, |
121 | {"setfacemode", SetFaceMode, 2}, |
129 | { "setsound", SetSound}, |
122 | {"setsound", SetSound, 2}, |
130 | { "setup", SetUp}, |
123 | {"setup", SetUp, 2}, |
131 | { "version", VersionCmd }, |
124 | {"version", VersionCmd, 2}, |
132 | { "toggleextendedinfos", ToggleExtendedInfos}, /*Added: tchize*/ |
125 | {"toggleextendedinfos", ToggleExtendedInfos, 2}, /*Added: tchize */ |
133 | { "toggleextendedtext", ToggleExtendedText}, /*Added: tchize*/ |
126 | {"toggleextendedtext", ToggleExtendedText, 2}, /*Added: tchize */ |
134 | { "asksmooth", AskSmooth}, /*Added: tchize (smoothing technologies)*/ |
127 | {"asksmooth", AskSmooth}, /*Added: tchize (smoothing technologies) */ |
135 | { NULL, NULL} /* terminator (I, II & III)*/ |
128 | { 0 } /* terminator (I, II & III) */ |
136 | }; |
129 | }; |
137 | |
130 | |
138 | /** |
131 | /** |
139 | * RequestInfo is sort of a meta command. There is some specific |
132 | * RequestInfo is sort of a meta command. There is some specific |
140 | * request of information, but we call other functions to provide |
133 | * request of information, but we call other functions to provide |
141 | * that information. |
134 | * that information. |
142 | */ |
135 | */ |
|
|
136 | void |
143 | void RequestInfo(char *buf, int len, NewSocket *ns) |
137 | RequestInfo (char *buf, int len, client_socket * ns) |
144 | { |
138 | { |
145 | char *params=NULL, *cp; |
139 | char *params = NULL, *cp; |
|
|
140 | |
146 | /* No match */ |
141 | /* No match */ |
147 | char bigbuf[MAX_BUF]; |
142 | char bigbuf[MAX_BUF]; |
148 | int slen; |
143 | int slen; |
149 | |
144 | |
150 | /* Set up replyinfo before we modify any of the buffers - this is used |
145 | /* Set up replyinfo before we modify any of the buffers - this is used |
151 | * if we don't find a match. |
146 | * if we don't find a match. |
152 | */ |
147 | */ |
153 | strcpy(bigbuf,"replyinfo "); |
148 | strcpy (bigbuf, "replyinfo "); |
154 | slen = strlen(bigbuf); |
149 | slen = strlen (bigbuf); |
155 | safe_strcat(bigbuf, buf, &slen, MAX_BUF); |
150 | safe_strcat (bigbuf, buf, &slen, MAX_BUF); |
156 | |
151 | |
157 | /* find the first space, make it null, and update the |
152 | /* find the first space, make it null, and update the |
158 | * params pointer. |
153 | * params pointer. |
159 | */ |
154 | */ |
160 | for (cp = buf; *cp != '\0'; cp++) |
155 | for (cp = buf; *cp != '\0'; cp++) |
161 | if (*cp==' ') { |
156 | if (*cp == ' ') |
|
|
157 | { |
162 | *cp = '\0'; |
158 | *cp = '\0'; |
163 | params = cp + 1; |
159 | params = cp + 1; |
164 | break; |
160 | break; |
165 | } |
161 | } |
166 | if (!strcmp(buf, "image_info")) send_image_info(ns, params); |
162 | |
167 | else if (!strcmp(buf,"image_sums")) send_image_sums(ns, params); |
163 | if (!strcmp (buf, "image_info")) |
168 | else if (!strcmp(buf,"skill_info")) send_skill_info(ns, params); |
164 | send_image_info (ns, params); |
169 | else if (!strcmp(buf,"spell_paths")) send_spell_paths(ns, params); |
165 | else if (!strcmp (buf, "image_sums")) |
170 | else Write_String_To_Socket(ns, bigbuf, len); |
166 | send_image_sums (ns, params); |
|
|
167 | else if (!strcmp (buf, "skill_info")) |
|
|
168 | send_skill_info (ns, params); |
|
|
169 | else if (!strcmp (buf, "spell_paths")) |
|
|
170 | send_spell_paths (ns, params); |
|
|
171 | else |
|
|
172 | ns->send_packet (bigbuf, len); |
171 | } |
173 | } |
172 | |
|
|
173 | /** |
|
|
174 | * Handles old socket format. |
|
|
175 | */ |
|
|
176 | void 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(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 | |
174 | |
318 | /** |
175 | /** |
319 | * Handle client input. |
176 | * Handle client input. |
320 | * |
177 | * |
321 | * HandleClient is actually not named really well - we only get here once |
178 | * HandleClient is actually not named really well - we only get here once |
… | |
… | |
323 | * sock is the output socket information. pl is the player associated |
180 | * 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 |
181 | * with this socket, null if no player (one of the init_sockets for just |
325 | * starting a connection) |
182 | * starting a connection) |
326 | */ |
183 | */ |
327 | |
184 | |
|
|
185 | void |
328 | void HandleClient(NewSocket *ns, player *pl) |
186 | HandleClient (client_socket *ns, player *pl) |
329 | { |
187 | { |
330 | int len=0,i,cnt; |
|
|
331 | char *data; |
|
|
332 | |
|
|
333 | /* Loop through this - maybe we have several complete packets here. */ |
188 | /* Loop through this - maybe we have several complete packets here. */ |
334 | // limit to a few commands only, though, as to not monopolise the server |
189 | // limit to a few commands only, though, as to not monopolise the server |
335 | for (cnt = 16; cnt--; ) { |
190 | for (int repeat = 16; repeat--;) |
|
|
191 | { |
336 | /* If it is a player, and they don't have any speed left, we |
192 | /* 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. |
193 | * return, and will read in the data when they do have time. |
338 | */ |
194 | */ |
339 | if (pl && pl->state==ST_PLAYING && pl->ob != NULL && pl->ob->speed_left < 0) { |
195 | if (pl && pl->state == ST_PLAYING && pl->ob && pl->ob->speed_left < 0) |
|
|
196 | return; |
|
|
197 | |
|
|
198 | int pkt_len = ns->read_packet (); |
|
|
199 | |
|
|
200 | if (pkt_len < 0) |
|
|
201 | { |
|
|
202 | LOG (llevError, "read error on player %s\n", &pl->ob->name); |
|
|
203 | /* Caller will take care of cleaning this up */ |
|
|
204 | ns->status = Ns_Dead; |
340 | return; |
205 | return; |
|
|
206 | } |
|
|
207 | else if (pkt_len == 0) |
|
|
208 | /* Still dont have a full packet */ |
|
|
209 | return; |
|
|
210 | |
|
|
211 | /* First, break out beginning word. There are at least |
|
|
212 | * a few commands that do not have any paremeters. If |
|
|
213 | * we get such a command, don't worry about trying |
|
|
214 | * to break it up. |
|
|
215 | */ |
|
|
216 | int datalen; |
|
|
217 | char *data = strchr ((char *)ns->inbuf + 2, ' '); |
|
|
218 | |
|
|
219 | if (data) |
341 | } |
220 | { |
|
|
221 | *data++ = 0; |
|
|
222 | datalen = pkt_len - (data - (char *)ns->inbuf); |
|
|
223 | } |
|
|
224 | else |
|
|
225 | { |
|
|
226 | data = (char *)ns->inbuf + 2; // better read garbage than segfault |
|
|
227 | datalen = 0; |
|
|
228 | } |
|
|
229 | |
|
|
230 | ns->inbuf [pkt_len] = 0; /* Terminate buffer - useful for string data */ |
|
|
231 | |
|
|
232 | for (int i = 0; nscommands[i].cmdname; i++) |
|
|
233 | { |
|
|
234 | if (!strcmp ((char *)ns->inbuf + 2, nscommands[i].cmdname)) |
342 | |
235 | { |
343 | if (ns->status == Ns_Old) { |
236 | nscommands[i].cmdproc (data, datalen, ns); |
344 | Handle_Oldsocket(ns); |
237 | ns->skip_packet (pkt_len); |
345 | return; |
238 | //D// not doing this causes random memory corruption |
346 | } |
239 | if (nscommands[i].flag & 2) |
347 | i=SockList_ReadPacket(ns->fd, &ns->inbuf, MAXSOCKBUF-1); |
240 | goto next_packet; |
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; |
241 | return; |
358 | } |
242 | } |
359 | } |
243 | } |
360 | |
244 | |
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 */ |
|
|
366 | ns->status =Ns_Dead; |
|
|
367 | return; |
|
|
368 | } |
|
|
369 | /* Still dont have a full packet */ |
|
|
370 | if (i==0) return; |
|
|
371 | |
|
|
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 |
|
|
377 | * a few commands that do not have any paremeters. If |
|
|
378 | * we get such a command, don't worry about trying |
|
|
379 | * to break it up. |
|
|
380 | */ |
|
|
381 | data = (char *)strchr((char*)ns->inbuf.buf +2, ' '); |
|
|
382 | if (data) { |
|
|
383 | *data='\0'; |
|
|
384 | data++; |
|
|
385 | len = ns->inbuf.len - (data - (char*)ns->inbuf.buf); |
|
|
386 | } |
|
|
387 | else len=0; |
|
|
388 | |
|
|
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 | } |
|
|
397 | } |
|
|
398 | /* Player must be in the playing state or the flag on the |
245 | /* Player must be in the playing state or the flag on the |
399 | * the command must be zero for the user to use the command - |
246 | * the command must be zero for the user to use the command - |
400 | * otherwise, a player cam save, be in the play_again state, and |
247 | * otherwise, a player cam save, be in the play_again state, and |
401 | * the map they were on gets swapped out, yet things that try to look |
248 | * the map they were on gets swapped out, yet things that try to look |
402 | * at the map causes a crash. If the command is valid, but |
249 | * at the map causes a crash. If the command is valid, but |
403 | * one they can't use, we still swallow it up. |
250 | * one they can't use, we still swallow it up. |
404 | */ |
251 | */ |
|
|
252 | if (pl) |
405 | if (pl) for (i=0; plcommands[i].cmdname !=NULL; i++) { |
253 | for (int i = 0; plcommands[i].cmdname; i++) |
|
|
254 | { |
406 | if (strcmp((char*)ns->inbuf.buf+2,plcommands[i].cmdname)==0) { |
255 | if (!strcmp ((char *)ns->inbuf + 2, plcommands[i].cmdname)) |
|
|
256 | { |
407 | if (pl->state == ST_PLAYING || !(plcommands[i].flag & 1)) |
257 | if (pl->state == ST_PLAYING || !(plcommands[i].flag & 1)) |
408 | plcommands[i].cmdproc((char*)data,len,pl); |
258 | plcommands[i].cmdproc ((char *) data, datalen, pl); |
409 | ns->inbuf.len=0; |
259 | |
|
|
260 | ns->skip_packet (pkt_len); |
410 | //D// not doing this causes random memory corruption |
261 | //D// not doing this causes random memory corruption |
411 | if (plcommands[i].flag & 2) |
262 | if (plcommands[i].flag & 2) |
412 | goto next_packet; |
263 | goto next_packet; |
|
|
264 | |
413 | return; |
265 | return; |
414 | } |
266 | } |
415 | } |
267 | } |
|
|
268 | |
416 | /* If we get here, we didn't find a valid command. Logging |
269 | /* If we get here, we didn't find a valid command. Logging |
417 | * this might be questionable, because a broken client/malicious |
270 | * this might be questionable, because a broken client/malicious |
418 | * user could certainly send a whole bunch of invalid commands. |
271 | * user could certainly send a whole bunch of invalid commands. |
419 | */ |
272 | */ |
420 | LOG(llevDebug,"Bad command from client (%s)\n",ns->inbuf.buf+2); |
273 | LOG (llevDebug, "Bad command from client (%s)\n", ns->inbuf + 2); |
|
|
274 | ns->skip_packet (pkt_len); |
421 | next_packet: |
275 | next_packet: |
422 | ; |
276 | ; |
423 | } |
277 | } |
424 | } |
278 | } |
425 | |
279 | |
426 | |
280 | |
427 | /***************************************************************************** |
281 | /***************************************************************************** |
… | |
… | |
430 | * sending. |
284 | * sending. |
431 | * |
285 | * |
432 | ******************************************************************************/ |
286 | ******************************************************************************/ |
433 | |
287 | |
434 | #ifdef WATCHDOG |
288 | #ifdef WATCHDOG |
|
|
289 | |
435 | /** |
290 | /** |
436 | * Tell watchdog that we are still alive |
291 | * Tell watchdog that we are still alive |
437 | * |
292 | * |
438 | * I put the function here since we should hopefully already be getting |
293 | * I put the function here since we should hopefully already be getting |
439 | * all the needed include files for socket support |
294 | * all the needed include files for socket support |
440 | */ |
295 | */ |
441 | |
296 | |
|
|
297 | void |
442 | void watchdog(void) |
298 | watchdog (void) |
443 | { |
299 | { |
444 | static int fd=-1; |
300 | static int fd = -1; |
445 | static struct sockaddr_in insock; |
301 | static struct sockaddr_in insock; |
446 | |
302 | |
447 | if (fd==-1) |
303 | if (fd == -1) |
448 | { |
304 | { |
449 | struct protoent *protoent; |
305 | struct protoent *protoent; |
450 | |
306 | |
451 | if ((protoent=getprotobyname("udp"))==NULL || |
307 | if ((protoent = getprotobyname ("udp")) == NULL || (fd = socket (PF_INET, SOCK_DGRAM, protoent->p_proto)) == -1) |
452 | (fd=socket(PF_INET, SOCK_DGRAM, protoent->p_proto))==-1) |
|
|
453 | { |
308 | { |
454 | return; |
309 | return; |
455 | } |
310 | } |
456 | insock.sin_family=AF_INET; |
311 | insock.sin_family = AF_INET; |
457 | insock.sin_port=htons((unsigned short)13325); |
312 | insock.sin_port = htons ((unsigned short) 13325); |
458 | insock.sin_addr.s_addr=inet_addr("127.0.0.1"); |
313 | insock.sin_addr.s_addr = inet_addr ("127.0.0.1"); |
459 | } |
314 | } |
460 | sendto(fd,(void *)&fd,1,0,(struct sockaddr *)&insock,sizeof(insock)); |
315 | sendto (fd, (void *) &fd, 1, 0, (struct sockaddr *) &insock, sizeof (insock)); |
461 | } |
316 | } |
462 | #endif |
317 | #endif |
463 | |
318 | |
|
|
319 | void |
464 | void flush_sockets(void) |
320 | flush_sockets (void) |
465 | { |
321 | { |
466 | player *pl; |
322 | player *pl; |
467 | |
323 | |
468 | for (pl = first_player; pl != NULL; pl = pl->next) |
324 | for (pl = first_player; pl != NULL; pl = pl->next) |
469 | if (pl->socket.status != Ns_Dead) |
325 | if (pl->socket->status != Ns_Dead) |
470 | Socket_Flush (&pl->socket); |
326 | Socket_Flush (pl->socket); |
471 | } |
327 | } |
472 | |
328 | |
473 | /** |
329 | /** |
474 | * This checks the sockets for input and exceptions, does the right thing. |
330 | * This checks the sockets for input, does the right thing. |
475 | * |
331 | * |
476 | * A bit of this code is grabbed out of socket.c |
332 | * 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 |
333 | * There are 2 lists we need to look through - init_sockets is a list |
478 | * |
334 | * |
479 | */ |
335 | */ |
|
|
336 | void |
480 | void doeric_server(void) |
337 | doeric_server (void) |
481 | { |
338 | { |
482 | int i, pollret; |
339 | int i, pollret; |
483 | fd_set tmp_read, tmp_exceptions, tmp_write; |
340 | fd_set tmp_read, tmp_write; |
484 | struct sockaddr_in addr; |
341 | struct sockaddr_in addr; |
485 | socklen_t addrlen=sizeof(struct sockaddr); |
342 | socklen_t addrlen = sizeof (struct sockaddr); |
486 | player *pl, *next; |
343 | player *pl, *next; |
|
|
344 | int maxfd = 0; |
487 | |
345 | |
488 | #ifdef CS_LOGSTATS |
346 | #ifdef CS_LOGSTATS |
489 | if ((time(NULL)-cst_lst.time_start)>=CS_LOGTIME) |
347 | if ((time (NULL) - cst_lst.time_start) >= CS_LOGTIME) |
490 | write_cs_stats(); |
348 | write_cs_stats (); |
491 | #endif |
349 | #endif |
492 | |
350 | |
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, |
351 | /* Go through the players. Let the loop set the next pl value, |
510 | * since we may remove some |
352 | * since we may remove some |
511 | */ |
353 | */ |
|
|
354 | //TODO: must be handled cleanly elsewhere |
512 | for (pl=first_player; pl!=NULL; ) { |
355 | for (pl = first_player; pl; ) |
|
|
356 | { |
|
|
357 | player *npl = pl->next; |
|
|
358 | |
|
|
359 | //TODO: must be handled cleanly elsewhere |
513 | if (pl->socket.status == Ns_Dead) { |
360 | if (pl->socket->status == Ns_Dead) |
514 | player *npl=pl->next; |
361 | { |
515 | |
|
|
516 | save_player(pl->ob, 0); |
362 | save_player (pl->ob, 0); |
|
|
363 | |
517 | if(!QUERY_FLAG(pl->ob,FLAG_REMOVED)) { |
364 | if (!QUERY_FLAG (pl->ob, FLAG_REMOVED)) |
|
|
365 | { |
518 | terminate_all_pets(pl->ob); |
366 | terminate_all_pets (pl->ob); |
519 | remove_ob(pl->ob); |
367 | pl->ob->remove (); |
520 | } |
368 | } |
|
|
369 | |
521 | leave(pl,1); |
370 | leave (pl, 1); |
522 | final_free_player(pl); |
371 | final_free_player (pl); |
|
|
372 | } |
|
|
373 | |
523 | pl=npl; |
374 | pl = npl; |
|
|
375 | } |
|
|
376 | |
|
|
377 | FD_ZERO (&tmp_read); |
|
|
378 | FD_ZERO (&tmp_write); |
|
|
379 | |
|
|
380 | for (sockvec::iterator i = client_sockets.begin (); i != client_sockets.end (); ) |
|
|
381 | { |
|
|
382 | client_socket *s = *i; |
|
|
383 | |
|
|
384 | if (s->status == Ns_Dead) |
524 | } |
385 | { |
|
|
386 | client_sockets.erase (i); |
|
|
387 | delete s; |
|
|
388 | } |
525 | else { |
389 | 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 | } |
390 | { |
531 | } |
391 | if (s->fd > maxfd) maxfd = s->fd; |
532 | |
392 | |
533 | /* Reset timeout each time, since some OS's will change the values on |
393 | FD_SET (s->fd, &tmp_read); |
534 | * the return from select. |
394 | |
535 | */ |
395 | if (s->outputbuffer.len) |
536 | socket_info.timeout.tv_sec = 0; |
396 | FD_SET (s->fd, &tmp_write); |
|
|
397 | |
|
|
398 | ++i; |
|
|
399 | } |
|
|
400 | } |
|
|
401 | |
|
|
402 | struct timeval timeout; |
|
|
403 | |
|
|
404 | timeout.tv_sec = 0; |
537 | socket_info.timeout.tv_usec = 0; |
405 | timeout.tv_usec = 0; |
538 | |
406 | |
539 | pollret= select(socket_info.max_filedescriptor, &tmp_read, &tmp_write, |
407 | pollret = select (maxfd + 1, |
540 | &tmp_exceptions, &socket_info.timeout); |
408 | &tmp_read, &tmp_write, 0, |
|
|
409 | &timeout); |
541 | |
410 | |
542 | if (pollret==-1) { |
411 | if (pollret == -1) |
|
|
412 | { |
543 | LOG(llevError, "select failed: %s\n", strerror(errno)); |
413 | LOG (llevError, "select failed: %s\n", strerror (errno)); |
544 | return; |
414 | return; |
545 | } |
415 | } |
546 | |
416 | |
547 | /* We need to do some of the processing below regardless */ |
417 | /* We need to do some of the processing below regardless */ |
548 | /* if (!pollret) return;*/ |
|
|
549 | |
418 | |
550 | /* Following adds a new connection */ |
419 | /* Check for any input on the sockets */ |
551 | if (pollret && FD_ISSET(init_sockets[0].fd, &tmp_read)) { |
420 | for (sockvec::iterator i = client_sockets.begin (); i != client_sockets.end (); ++i) |
552 | int newsocknum=0; |
421 | { |
|
|
422 | client_socket *s = *i; |
|
|
423 | player *pl = s->pl; |
553 | |
424 | |
554 | #ifdef ESRV_DEBUG |
425 | //TODO: writing should be independent of tick |
555 | LOG(llevDebug,"doeric_server: New Connection\n"); |
426 | if (FD_ISSET (s->fd, &tmp_write)) |
556 | #endif |
|
|
557 | /* If this is the case, all sockets currently in used */ |
|
|
558 | if (socket_info.allocated_sockets <= socket_info.nconns) { |
|
|
559 | init_sockets = (NewSocket *) realloc(init_sockets,sizeof(NewSocket)*(socket_info.nconns+1)); |
|
|
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 | } |
427 | { |
568 | else { |
428 | s->can_write = 1; |
569 | int j; |
429 | write_socket_buffer (s); |
|
|
430 | } |
570 | |
431 | |
571 | for (j=1; j<socket_info.allocated_sockets; j++) |
432 | //TODO: disassociate handleclient from socket readin |
572 | if (init_sockets[j].status == Ns_Avail) { |
433 | if (s->inbuf_len || FD_ISSET (s->fd, &tmp_read)) |
573 | newsocknum=j; |
434 | HandleClient (s, pl); |
574 | break; |
435 | |
575 | } |
436 | //TODO: should not be done here, either |
|
|
437 | if (s->status != Ns_Dead && pl) |
576 | } |
438 | { |
577 | init_sockets[newsocknum].fd=accept(init_sockets[0].fd, (struct sockaddr *)&addr, &addrlen); |
439 | /* Update the players stats once per tick. More efficient than |
578 | if (init_sockets[newsocknum].fd==-1) { |
440 | * sending them whenever they change, and probably just as useful |
579 | LOG(llevError, "accept failed: %s\n", strerror(errno)); |
441 | */ |
580 | } |
442 | esrv_update_stats (pl); |
581 | else { |
443 | if (pl->last_weight != -1 && pl->last_weight != WEIGHT (pl->ob)) |
582 | char buf[MAX_BUF]; |
444 | { |
583 | long ip; |
445 | esrv_update_item (UPD_WEIGHT, pl->ob, pl->ob); |
584 | NewSocket *ns; |
446 | if (pl->last_weight != WEIGHT (pl->ob)) |
585 | |
447 | LOG (llevError, "esrv_update_item(UPD_WEIGHT) did not set player weight: is %lu, should be %lu\n", |
586 | ns = &init_sockets[newsocknum]; |
448 | (unsigned long) pl->last_weight, WEIGHT (pl->ob)); |
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 | } |
449 | } |
596 | else { |
|
|
597 | InitConnection(ns, buf); |
|
|
598 | socket_info.nconns++; |
|
|
599 | } |
|
|
600 | } |
|
|
601 | } |
|
|
602 | |
450 | |
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 |
451 | /* draw_client_map does sanity checking that map is |
677 | * valid, so don't do it here. |
452 | * valid, so don't do it here. |
678 | */ |
453 | */ |
679 | draw_client_map(pl->ob); |
454 | draw_client_map (pl->ob); |
680 | if (pl->socket.update_look) esrv_draw_look(pl->ob); |
455 | if (s->update_look) |
681 | } |
456 | esrv_draw_look (pl->ob); |
682 | } |
457 | } |
683 | } |
458 | } |
684 | } |
459 | } |
|
|
460 | |