1 | /* |
1 | /* |
2 | * This file is part of Crossfire TRT, the Roguelike Realtime MORPG. |
2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
3 | * |
3 | * |
4 | * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team |
4 | * Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
5 | * Copyright (©) 1992,2007 Frank Tore Johansen |
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|
6 | * |
5 | * |
7 | * Crossfire TRT is free software: you can redistribute it and/or modify |
6 | * Deliantra is free software: you can redistribute it and/or modify it under |
8 | * it under the terms of the GNU General Public License as published by |
7 | * the terms of the Affero GNU General Public License as published by the |
9 | * the Free Software Foundation, either version 3 of the License, or |
8 | * Free Software Foundation, either version 3 of the License, or (at your |
10 | * (at your option) any later version. |
9 | * option) any later version. |
11 | * |
10 | * |
12 | * This program is distributed in the hope that it will be useful, |
11 | * This program is distributed in the hope that it will be useful, |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * GNU General Public License for more details. |
14 | * GNU General Public License for more details. |
16 | * |
15 | * |
17 | * You should have received a copy of the GNU General Public License |
16 | * You should have received a copy of the Affero GNU General Public License |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
17 | * and the GNU General Public License along with this program. If not, see |
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|
18 | * <http://www.gnu.org/licenses/>. |
19 | * |
19 | * |
20 | * The authors can be reached via e-mail to <crossfire@schmorp.de> |
20 | * The authors can be reached via e-mail to <support@deliantra.net> |
21 | */ |
21 | */ |
22 | |
22 | |
23 | using namespace std; |
23 | using namespace std; |
24 | |
24 | |
25 | #include <global.h> |
25 | #include <global.h> |
… | |
… | |
31 | # include <sys/socket.h> |
31 | # include <sys/socket.h> |
32 | # include <netinet/in.h> |
32 | # include <netinet/in.h> |
33 | # include <netinet/tcp.h> |
33 | # include <netinet/tcp.h> |
34 | #endif |
34 | #endif |
35 | |
35 | |
36 | // disconnect a socket after this many seconds without an ack |
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37 | #define SOCKET_TIMEOUT 8. |
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38 | |
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39 | // force a packet when idle for more than this many seconds, |
36 | // force a packet when idle for more than this many seconds, |
40 | // forcing an ack regularly. |
37 | // forcing an ack regularly. |
41 | #define IDLE_PING 2. |
38 | #define IDLE_PING 2. |
42 | |
39 | |
43 | void |
40 | void |
44 | client::flush () |
41 | client::flush () |
45 | { |
42 | { |
46 | if (destroyed ()) |
43 | if (destroyed ()) |
47 | return; |
44 | return; |
48 | |
|
|
49 | #if HAVE_TCP_INFO |
|
|
50 | // check about once per second, spread evenly over all clients |
|
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51 | // do this only when player is active |
|
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52 | if (!((pticks + fd) & 7) && pl && pl->active) |
|
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53 | { |
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54 | // check time of last ack, and, if too old, kill connection |
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55 | socklen_t len = sizeof (tcpi); |
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56 | |
|
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57 | if (!getsockopt (fd, IPPROTO_TCP, TCP_INFO, &tcpi, &len) && len == sizeof (tcpi)) |
|
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58 | { |
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|
59 | if (tcpi.tcpi_snd_mss) |
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60 | mss = tcpi.tcpi_snd_mss; |
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61 | |
|
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62 | //fprintf (stderr, "uack %d sst %d cwnd %d mss %d pmtu %d\n", |
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63 | // tcpi.tcpi_unacked, tcpi.tcpi_snd_ssthresh, tcpi.tcpi_snd_cwnd, tcpi.tcpi_advmss, tcpi.tcpi_pmtu); |
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64 | |
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65 | if (tcpi.tcpi_last_ack_recv > int (SOCKET_TIMEOUT * 1000)) |
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66 | { |
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67 | send_msg (NDI_RED | NDI_REPLY, "connection-timeout", "safety disconnect due to tcp/ip timeout (no packets received)"); |
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68 | write_outputbuffer (); |
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69 | |
|
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70 | LOG (llevDebug, "connection on fd %d closed due to ack timeout (%u/%u/%u)\n", fd, |
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71 | (unsigned)tcpi.tcpi_last_ack_recv, (unsigned)tcpi.tcpi_last_data_sent, (unsigned)tcpi.tcpi_unacked); |
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72 | destroy (); |
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73 | } |
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74 | } |
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75 | } |
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|
76 | #endif |
|
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77 | |
45 | |
78 | /** |
46 | /** |
79 | * Writes data to socket. |
47 | * Writes data to socket. |
80 | * |
48 | * |
81 | * When the socket is clear to write, and we have backlogged data, this |
49 | * When the socket is clear to write, and we have backlogged data, this |
82 | * is called to write it out. |
50 | * is called to write it out. |
83 | */ |
51 | */ |
84 | |
52 | |
85 | // write a nop to the socket at least every IDLE_NOP seconds. |
53 | // write a nop to the socket at least every IDLE_PING seconds. |
86 | if (!outputbuffer.len) |
54 | if (!outputbuffer.len) |
87 | { |
55 | { |
88 | if (last_send + IDLE_PING <= NOW && pl && pl->active) |
56 | if (last_send + IDLE_PING <= NOW && pl && pl->active) |
89 | { |
57 | { |
90 | // this is a bit ugly, but map1/map1a seem to be the only |
58 | // this is a bit ugly, but map1a seems to be the only |
91 | // nop'able commands and they are quite small. |
59 | // nop'able command and it is quite small. |
92 | packet sl (mapmode == Map1Cmd ? "map1" : "map1a"); |
60 | packet sl ("map1a"); |
93 | send_packet (sl); |
61 | send_packet (sl); |
94 | } |
62 | } |
95 | else |
63 | else |
96 | return; |
64 | return; |
97 | } |
65 | } |
98 | |
66 | |
99 | if (socket_ev.poll () & PE_W) |
67 | if (socket_ev.poll () & EV_WRITE) |
100 | return; |
68 | return; |
101 | |
69 | |
102 | last_send = NOW; |
70 | last_send = NOW; |
103 | write_outputbuffer (); |
71 | write_outputbuffer (); |
104 | } |
72 | } |
… | |
… | |
131 | // just retry |
99 | // just retry |
132 | } |
100 | } |
133 | else if (errno == EAGAIN) |
101 | else if (errno == EAGAIN) |
134 | { |
102 | { |
135 | // delay till ready |
103 | // delay till ready |
136 | socket_ev.poll (socket_ev.poll () | PE_W); |
104 | socket_ev.poll (socket_ev.poll () | EV_WRITE); |
137 | socket_ev.start (); |
105 | socket_ev.start (); |
138 | return; |
106 | return; |
139 | } |
107 | } |
140 | else |
108 | else |
141 | { |
109 | { |
… | |
… | |
143 | destroy (); |
111 | destroy (); |
144 | return; |
112 | return; |
145 | } |
113 | } |
146 | } |
114 | } |
147 | |
115 | |
148 | socket_ev.poll (socket_ev.poll () & ~PE_W); |
116 | socket_ev.poll (socket_ev.poll () & ~EV_WRITE); |
149 | } |
117 | } |
150 | |
118 | |
151 | /****************************************************************************** |
119 | /****************************************************************************** |
152 | * |
120 | * |
153 | * Start of read routines. |
121 | * Start of read routines. |
… | |
… | |
164 | if (inbuf_len >= 2 + pkt_len) |
132 | if (inbuf_len >= 2 + pkt_len) |
165 | return 2 + pkt_len; |
133 | return 2 + pkt_len; |
166 | |
134 | |
167 | if (inbuf_len == sizeof (inbuf)) |
135 | if (inbuf_len == sizeof (inbuf)) |
168 | { |
136 | { |
169 | send_packet_printf ("drawinfo %d input buffer overflow - closing connection.", NDI_RED | NDI_REPLY); |
137 | send_packet_printf ("msg %d log input buffer overflow - closing connection.", NDI_RED | NDI_REPLY); |
170 | destroy (); |
138 | destroy (); |
171 | return -1; |
139 | return -1; |
172 | } |
140 | } |
173 | } |
141 | } |
174 | |
142 | |
… | |
… | |
189 | |
157 | |
190 | // SocketCommand, PlayingCommand, should not exist with those ugly casts |
158 | // SocketCommand, PlayingCommand, should not exist with those ugly casts |
191 | #define SC(cb) (void *)static_cast<void (*)(char *, int, client *)>(cb), |
159 | #define SC(cb) (void *)static_cast<void (*)(char *, int, client *)>(cb), |
192 | #define PC(cb) (void *)static_cast<void (*)(char *, int, player *)>(cb), PF_PLAYER | |
160 | #define PC(cb) (void *)static_cast<void (*)(char *, int, player *)>(cb), PF_PLAYER | |
193 | |
161 | |
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|
162 | static void |
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163 | NopCmd (char *, int, client *) |
|
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164 | { |
|
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165 | // do nothing |
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166 | } |
|
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167 | |
194 | /** |
168 | /** |
195 | * Dispatch table for the server. |
169 | * Dispatch table for the server. |
196 | */ |
170 | */ |
197 | static struct packet_type packets[] = { |
171 | static struct packet_type packets[] = { |
198 | {"ncom", PC(NewPlayerCmd) PF_PLAYING | PF_COMMAND6 }, |
|
|
199 | {"command", PC(PlayerCmd) PF_PLAYING | PF_COMMAND0 }, |
172 | {"command", PC(PlayerCmd) PF_PLAYING | PF_COMMAND }, |
200 | |
173 | |
201 | {"examine", PC(ExamineCmd) PF_PLAYING }, |
174 | {"examine", PC(ExamineCmd) PF_PLAYING }, |
202 | {"ex", PC(ExCmd) PF_PLAYING }, |
175 | {"ex", PC(ExCmd) PF_PLAYING }, |
203 | {"apply", PC(ApplyCmd) PF_PLAYING }, |
176 | {"apply", PC(ApplyCmd) PF_PLAYING }, |
204 | {"lookat", PC(LookAt) PF_PLAYING }, |
177 | {"lookat", PC(LookAt) PF_PLAYING }, |
205 | {"lock", PC(LockItem) PF_PLAYING }, |
178 | {"lock", PC(LockItem) PF_PLAYING }, |
206 | {"mark", PC(MarkItem) PF_PLAYING }, |
179 | {"mark", PC(MarkItem) PF_PLAYING }, |
207 | {"move", PC(MoveCmd) PF_PLAYING }, |
180 | {"move", PC(MoveCmd) PF_PLAYING }, |
208 | {"ext", PC(ExtCmd) 0 }, // CF+ |
181 | {"ext", PC(ExtCmd) 0 }, // CF+/Deliantra |
209 | {"mapredraw", PC(MapRedrawCmd) 0 }, |
182 | {"mapredraw", PC(MapRedrawCmd) 0 }, |
210 | {"mapinfo", PC(MapInfoCmd) 0 }, // CF+ |
183 | {"mapinfo", PC(MapInfoCmd) 0 }, // CF+/Deliantra |
211 | |
184 | |
212 | {"reply", SC(ReplyCmd) 0 }, |
185 | {"reply", SC(ReplyCmd) 0 }, |
213 | {"exti", SC(ExtiCmd) 0 }, // CF+ |
186 | {"exti", SC(ExtiCmd) 0 }, // CF+/Deliantra |
214 | {"addme", SC(AddMeCmd) 0 }, |
187 | {"addme", SC(AddMeCmd) 0 }, |
215 | {"askface", SC(AskFaceCmd) 0 }, |
188 | {"askface", SC(AskFaceCmd) 0 }, |
216 | {"requestinfo", SC(RequestInfo) 0 }, |
189 | {"requestinfo", SC(RequestInfo) 0 }, |
217 | {"setfacemode", SC(SetFaceMode) 0 }, |
|
|
218 | {"setsound", SC(SetSound) 0 }, |
190 | {"setsound", SC(SetSound) 0 }, |
219 | {"setup", SC(SetUp) 0 }, |
191 | {"setup", SC(SetUp) 0 }, |
220 | {"version", SC(VersionCmd) 0 }, |
192 | {"version", SC(VersionCmd) 0 }, |
221 | {"toggleextendedinfos", SC(ToggleExtendedInfos) 0 }, /*Added: tchize */ |
193 | |
222 | {"toggleextendedtext", SC(ToggleExtendedText) 0 }, /*Added: tchize */ |
194 | {"toggleextendedtext", SC(NopCmd) 0 }, // deliantra: disabled |
223 | {"asksmooth", SC(AskSmooth) 0 }, /*Added: tchize (smoothing technologies) */ |
|
|
224 | }; |
195 | }; |
225 | |
196 | |
226 | bool |
197 | bool |
227 | client::may_execute (const packet_type *pkt) const |
198 | client::may_execute (const packet_type *pkt) const |
228 | { |
199 | { |
229 | return (!(pkt->flags & PF_PLAYER) || pl) |
200 | return (!(pkt->flags & PF_PLAYER) || pl) |
230 | && (!(pkt->flags & PF_PLAYING) || state == ST_PLAYING); |
201 | && (!(pkt->flags & PF_PLAYING) || state == ST_PLAYING); |
231 | } |
202 | } |
232 | |
203 | |
233 | // HACK: some commands currently should be executed |
204 | // HACK: some commands currently should be executed |
234 | // even when the player is frozen. this hack detects |
205 | // even when the player is frozen. this hack detects |
235 | // those commands. it should be folded into may_execute, |
206 | // those commands. it should be folded into may_execute, |
236 | // but kept seperate to emphasise the hack aspect, i.e. |
207 | // but kept seperate to emphasise the hack aspect, i.e. |
237 | // do it better, then remove. |
208 | // do it better, then remove. |
238 | static bool |
209 | static bool |
239 | always_immediate (const client *ns, const packet_type *pkt, const char *data, int len) |
210 | always_immediate (const client *ns, const packet_type *pkt, const char *data, int len) |
240 | { |
211 | { |
241 | if (!(pkt->flags & (PF_COMMAND0 | PF_COMMAND6))) |
212 | if (!(pkt->flags & PF_COMMAND)) |
242 | return false; |
213 | return false; |
243 | |
214 | |
244 | if (!ns->pl || !ns->pl->ob || !ns->pl->ob->map) |
215 | if (!ns->pl || !ns->pl->ob || !ns->pl->ob->map) |
245 | return false; |
216 | return false; |
246 | |
217 | |
247 | if (pkt->flags & PF_COMMAND6) |
218 | if (len > 4 && data [ 3] == ' ' && !strncmp (data, "say " , 4)) return true; |
248 | { |
219 | if (len > 5 && data [ 4] == ' ' && !strncmp (data, "chat " , 5)) return true; |
249 | data += 6; |
220 | if (len > 6 && data [ 5] == ' ' && !strncmp (data, "shout " , 6)) return true; |
250 | len -= 6; |
221 | if (len > 8 && data [ 7] == ' ' && !strncmp (data, "suicide " , 8)) return true; |
251 | } |
222 | if (len > 18 && data [17] == ' ' && !strncmp (data, "accept-invitation ", 18)) return true; |
252 | |
223 | |
253 | if (len > 4 && !strncmp (data, "say " , 4)) |
224 | if (len == 7 && !strcmp (data, "suicide")) return true; |
254 | return true; |
|
|
255 | if (len > 5 && !strncmp (data, "chat ", 5)) |
|
|
256 | return true; |
|
|
257 | |
225 | |
258 | return false; |
226 | return false; |
259 | } |
227 | } |
260 | |
228 | |
261 | void |
229 | void |
… | |
… | |
263 | { |
231 | { |
264 | if (may_execute (pkt) || always_immediate (this, pkt, data, datalen)) |
232 | if (may_execute (pkt) || always_immediate (this, pkt, data, datalen)) |
265 | { |
233 | { |
266 | //TODO: only one format |
234 | //TODO: only one format |
267 | if (pkt->flags & PF_PLAYER) |
235 | if (pkt->flags & PF_PLAYER) |
|
|
236 | { |
268 | ((void (*)(char *, int, player *))pkt->cb)((char *)data, datalen, pl); |
237 | ((void (*)(char *, int, player *))pkt->cb)((char *)data, datalen, pl); |
|
|
238 | pl->need_updated_stats (); |
|
|
239 | } |
269 | else |
240 | else |
270 | ((void (*)(char *, int, client *))pkt->cb)((char *)data, datalen, this); |
241 | ((void (*)(char *, int, client *))pkt->cb)((char *)data, datalen, this); |
271 | } |
242 | } |
272 | else |
243 | else |
273 | send_packet_printf ("drawinfo %d ERROR: you cannot execute '%s' now.", NDI_RED | NDI_REPLY, pkt->name); |
244 | send_packet_printf ("drawinfo %d log ERROR: you cannot execute '%s' now.", NDI_RED | NDI_REPLY, pkt->name); |
274 | } |
245 | } |
275 | |
246 | |
276 | bool |
247 | bool |
277 | client::handle_packet () |
248 | client::handle_packet () |
278 | { |
249 | { |
… | |
… | |
286 | pl && pl->ob ? &pl->ob->name : "[anonymous]"); |
257 | pl && pl->ob ? &pl->ob->name : "[anonymous]"); |
287 | destroy (); |
258 | destroy (); |
288 | return false; |
259 | return false; |
289 | } |
260 | } |
290 | |
261 | |
|
|
262 | uint8_t save_byte = inbuf [pkt_len]; // rather ugly |
291 | inbuf [pkt_len] = 0; /* Terminate buffer - useful for string data */ |
263 | inbuf [pkt_len] = 0; /* temporarily terminate buffer - useful for string data */ |
292 | |
264 | |
293 | /* First, break out beginning word. There are at least |
265 | /* First, break out beginning word. There are at least |
294 | * a few commands that do not have any paremeters. If |
266 | * a few commands that do not have any paremeters. If |
295 | * we get such a command, don't worry about trying |
267 | * we get such a command, don't worry about trying |
296 | * to break it up. |
268 | * to break it up. |
… | |
… | |
307 | { |
279 | { |
308 | data = (char *)inbuf + 2; // better read garbage than segfault |
280 | data = (char *)inbuf + 2; // better read garbage than segfault |
309 | datalen = 0; |
281 | datalen = 0; |
310 | } |
282 | } |
311 | |
283 | |
312 | for (packet_type *pkt = packets; pkt < packets + (sizeof (packets) / sizeof (packets[0])); ++pkt) |
284 | for (packet_type *pkt = packets; pkt < packets + array_length (packets); ++pkt) |
313 | if (!strcmp ((char *)inbuf + 2, pkt->name)) |
285 | if (!strcmp ((char *)inbuf + 2, pkt->name)) |
314 | { |
286 | { |
315 | if (pkt->flags & PF_PLAYER && !always_immediate (this, pkt, data, datalen)) |
287 | if (pkt->flags & PF_PLAYER && !always_immediate (this, pkt, data, datalen)) |
316 | queue_command (pkt, data, datalen); |
288 | queue_command (pkt, data, datalen); |
317 | else |
289 | else |
… | |
… | |
319 | |
291 | |
320 | goto next_packet; |
292 | goto next_packet; |
321 | } |
293 | } |
322 | |
294 | |
323 | // If we get here, we didn't find a valid command. |
295 | // If we get here, we didn't find a valid command. |
324 | send_packet_printf ("drawinfo %d ERROR: command '%s' not supported.", NDI_RED | NDI_REPLY, (char *)inbuf + 2); |
296 | send_packet_printf ("msg %d log ERROR: command '%s' not supported.", NDI_RED | NDI_REPLY, (char *)inbuf + 2); |
|
|
297 | |
325 | next_packet: |
298 | next_packet: |
|
|
299 | inbuf [pkt_len] = save_byte; // rather ugly |
326 | skip_packet (pkt_len); |
300 | skip_packet (pkt_len); |
327 | |
301 | |
328 | // input buffer has space again |
302 | // input buffer has space again |
329 | socket_ev.poll (socket_ev.poll () | PE_R); |
303 | socket_ev.poll (socket_ev.poll () | EV_READ); |
330 | |
304 | |
331 | return true; |
305 | return true; |
332 | } |
306 | } |
333 | |
307 | |
|
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308 | void |
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309 | client::inbuf_handle () |
|
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310 | { |
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311 | if (!handle_packet ()) |
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312 | return; |
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313 | |
|
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314 | while (handle_packet ()) |
|
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315 | ; |
|
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316 | |
|
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317 | flush (); |
|
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318 | } |
|
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319 | |
334 | // callback called when socket is either readable or writable |
320 | // callback called when socket is either readable or writable |
335 | void |
321 | void |
336 | client::socket_cb (iow &w, int got) |
322 | client::socket_cb (iow &w, int revents) |
337 | { |
323 | { |
338 | //TODO remove when we have better socket cleanup logic |
324 | //TODO remove when we have better socket cleanup logic |
339 | if (destroyed ()) |
325 | if (destroyed ()) |
340 | { |
326 | { |
341 | socket_ev.poll (0); |
327 | socket_ev.poll (0); |
342 | return; |
328 | return; |
343 | } |
329 | } |
344 | |
330 | |
345 | if (got & PE_W) |
331 | if (revents & EV_WRITE) |
346 | { |
332 | { |
347 | write_outputbuffer (); |
333 | write_outputbuffer (); |
348 | |
334 | |
349 | if (!outputbuffer.len) |
335 | if (!outputbuffer.len) |
350 | socket_ev.poll (socket_ev.poll () & ~PE_W); |
336 | socket_ev.poll (socket_ev.poll () & ~EV_WRITE); |
351 | } |
|
|
352 | |
|
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353 | if (got & PE_R) |
|
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354 | { |
337 | } |
355 | //TODO: rate-limit tcp connection in better ways, important |
|
|
356 | |
338 | |
|
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339 | if (revents & EV_READ) |
|
|
340 | { |
|
|
341 | int amount; |
|
|
342 | uint8 *rbuf; |
|
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343 | |
|
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344 | if (ws_version) |
|
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345 | { |
|
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346 | if (ws_inbuf_len + 2048 > ws_inbuf_alloc) |
|
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347 | ws_inbuf = (uint8 *)realloc (ws_inbuf, ws_inbuf_alloc += 4096); |
|
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348 | |
|
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349 | rbuf = ws_inbuf + ws_inbuf_len; |
|
|
350 | amount = ws_inbuf_alloc - ws_inbuf_len; |
|
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351 | } |
|
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352 | else |
|
|
353 | { |
|
|
354 | rbuf = inbuf + inbuf_len; |
357 | int amount = sizeof (inbuf) - inbuf_len; |
355 | amount = sizeof (inbuf) - inbuf_len; |
|
|
356 | } |
358 | |
357 | |
359 | if (!amount) |
358 | if (!amount) |
360 | { |
359 | { |
361 | // input buffer full |
360 | // input buffer full |
362 | socket_ev.poll (socket_ev.poll () & ~PE_R); |
361 | LOG (llevError, "input buffer overflow."); |
|
|
362 | destroy (); |
363 | return; |
363 | return; |
364 | } |
364 | } |
365 | |
365 | |
366 | amount = read (fd, inbuf + inbuf_len, amount); |
366 | amount = read (fd, rbuf, amount); |
367 | |
367 | |
368 | if (!amount) |
368 | if (!amount) |
369 | { |
369 | { |
370 | destroy (); |
370 | destroy (); |
371 | return; |
371 | return; |
… | |
… | |
379 | return; |
379 | return; |
380 | } |
380 | } |
381 | |
381 | |
382 | // should not be here, normally |
382 | // should not be here, normally |
383 | } |
383 | } |
|
|
384 | |
|
|
385 | if (ws_version) |
|
|
386 | { |
|
|
387 | ws_inbuf_len += amount; |
|
|
388 | |
|
|
389 | while (ws_inbuf_len) |
|
|
390 | { |
|
|
391 | if (ws_inbuf_len < 2 + 4) // 6 is minimum length: op, len, mask |
|
|
392 | break; |
|
|
393 | |
|
|
394 | int d = 2; |
|
|
395 | int fin = ws_inbuf [0] & 0x80; |
|
|
396 | int op = ws_inbuf [0] & 0x0f; |
|
|
397 | int len = ws_inbuf [1] & 0x7f; |
|
|
398 | |
|
|
399 | if (len == 126) |
|
|
400 | { |
|
|
401 | len = (ws_inbuf [2] << 8) | ws_inbuf [3]; |
|
|
402 | d += 2; |
|
|
403 | } |
|
|
404 | else if (len == 127) |
|
|
405 | { |
|
|
406 | if (ws_inbuf_len < 2 + 8) |
|
|
407 | return; |
|
|
408 | |
|
|
409 | // we don't do extra long frames, if a browser wants to send >2**32 bytes, |
|
|
410 | // there are bigger issues to fix. |
|
|
411 | len = (ws_inbuf [8] << 8) | ws_inbuf [9]; |
|
|
412 | d += 8; |
|
|
413 | } |
|
|
414 | |
|
|
415 | // we only continue if we have a complete frame |
|
|
416 | if (ws_inbuf_len < d + 4 + len) |
|
|
417 | return; |
|
|
418 | |
|
|
419 | switch (op) |
|
|
420 | { |
|
|
421 | case 0: op = ws_inbuf_type; break; // continuation |
|
|
422 | case 1: ws_inbuf_type = 1; break; // utf-8 |
|
|
423 | case 2: ws_inbuf_type = 2; break; // binary |
|
|
424 | } |
|
|
425 | |
|
|
426 | if (len > sizeof (inbuf) - inbuf_len) |
|
|
427 | { |
|
|
428 | // input buffer full |
|
|
429 | LOG (llevError, "input buffer overflow (ws)."); |
|
|
430 | destroy (); |
|
|
431 | return; |
|
|
432 | } |
|
|
433 | |
|
|
434 | uint8 *buf = inbuf + inbuf_len + 2; |
|
|
435 | |
|
|
436 | for (int i = 0; i < len; ++i) |
|
|
437 | buf [i] = ws_inbuf [d + 4 + i] ^ ws_inbuf [d + (i & 3)]; |
|
|
438 | |
|
|
439 | // remove frame |
|
|
440 | ws_inbuf_len -= d + 4 + len; |
|
|
441 | memmove (ws_inbuf, ws_inbuf + d + 4 + len, ws_inbuf_len); |
|
|
442 | |
|
|
443 | switch (op) |
|
|
444 | { |
|
|
445 | case 1: // utf-8 |
|
|
446 | // utf-8 encoded frames cannot have full length (MAXSOCKBUF) in all cases |
|
|
447 | // but we assume that these extra-long packets will be rare. |
|
|
448 | { |
|
|
449 | uint8 *a = buf; |
|
|
450 | uint8 *b = a; |
|
|
451 | uint8 *c = a + len; |
|
|
452 | |
|
|
453 | for (; a < c; ++a, ++b) |
|
|
454 | { |
|
|
455 | *b = *a; |
|
|
456 | |
|
|
457 | if (*a >= 0x80) |
|
|
458 | *b = (a [0] & 0x1f) << 6 | (a [1] & 0x3f), ++a; |
|
|
459 | } |
|
|
460 | |
|
|
461 | len -= a - b; |
|
|
462 | } |
|
|
463 | /* FALLTHROUGH */ |
|
|
464 | case 2: // binary |
|
|
465 | inbuf_len += len; |
|
|
466 | |
|
|
467 | if (fin) |
|
|
468 | { |
|
|
469 | inbuf [0] = inbuf_len >> 8; |
|
|
470 | inbuf [1] = inbuf_len; |
|
|
471 | |
|
|
472 | inbuf_len += 2; |
|
|
473 | |
|
|
474 | inbuf_handle (); |
|
|
475 | } |
|
|
476 | break; |
|
|
477 | |
|
|
478 | case 9: // ping |
|
|
479 | { |
|
|
480 | // send pong - we assume ping messages are <64k |
|
|
481 | // as we can't handle >10k at the moment anyway. |
|
|
482 | uint8 hdr [] = { 0x8a, 126, len >> 8, len }; |
|
|
483 | send (hdr, sizeof (hdr)); |
|
|
484 | send (inbuf + inbuf_len, len); |
|
|
485 | } |
|
|
486 | break; |
|
|
487 | |
|
|
488 | case 10: // pong |
|
|
489 | break; |
|
|
490 | |
|
|
491 | case 8: // close |
|
|
492 | default: |
|
|
493 | destroy (); |
|
|
494 | return; |
|
|
495 | } |
|
|
496 | } |
|
|
497 | } |
384 | else |
498 | else |
385 | { |
499 | { |
386 | inbuf_len += amount; |
500 | inbuf_len += amount; |
387 | |
501 | inbuf_handle (); |
388 | cmd_ev.start (); |
|
|
389 | } |
502 | } |
390 | } |
503 | } |
391 | } |
|
|
392 | |
|
|
393 | // called whenever we have additional commands to process |
|
|
394 | void |
|
|
395 | client::cmd_cb (iw &w) |
|
|
396 | { |
|
|
397 | if (handle_packet ()) |
|
|
398 | w.start (); |
|
|
399 | else |
|
|
400 | flush (); |
|
|
401 | } |
504 | } |
402 | |
505 | |
403 | /******************************************************************************* |
506 | /******************************************************************************* |
404 | * |
507 | * |
405 | * Start of write related routines. |
508 | * Start of write related routines. |
… | |
… | |
461 | client::send_packet (packet &sl) |
564 | client::send_packet (packet &sl) |
462 | { |
565 | { |
463 | if (destroyed ()) |
566 | if (destroyed ()) |
464 | return; |
567 | return; |
465 | |
568 | |
466 | if (sl.length () >= MAXSOCKBUF) |
569 | if (sl.length () > MAXSOCKBUF) |
467 | { |
570 | { |
468 | LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ()); |
571 | LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ()); |
469 | /* Almost certainly we've overflowed a buffer, so quit now to make |
572 | /* Almost certainly we've overflowed a buffer, so quit now to make |
470 | * it easier to debug. |
573 | * it easier to debug. |
471 | */ |
574 | */ |
… | |
… | |
473 | } |
576 | } |
474 | |
577 | |
475 | if (!sl.length ()) |
578 | if (!sl.length ()) |
476 | return; |
579 | return; |
477 | |
580 | |
|
|
581 | if (ws_version == 8) |
|
|
582 | { |
|
|
583 | static uint8 buf [MAXSOCKBUF * 2 + 4]; |
|
|
584 | |
|
|
585 | uint8 *b = buf + 4; |
|
|
586 | for (uint8 *a = sl.buf_ + sl.hdrlen; a < sl.cur; ++a) |
|
|
587 | { |
|
|
588 | if (*a < 0x80) |
|
|
589 | *b++ = *a; |
|
|
590 | else |
|
|
591 | { |
|
|
592 | *b++ = 0xc0 | ((*a >> 6) & 0x1f); |
|
|
593 | *b++ = 0x80 | ( *a & 0x3f); |
|
|
594 | } |
|
|
595 | } |
|
|
596 | |
|
|
597 | assert (b - buf < sizeof (buf)); |
|
|
598 | |
|
|
599 | int len = b - (buf + 4); |
|
|
600 | |
|
|
601 | if (len < 126) |
|
|
602 | { |
|
|
603 | buf [2] = 0x81; |
|
|
604 | buf [3] = len; |
|
|
605 | |
|
|
606 | send (buf + 2, len + 2); |
|
|
607 | } |
|
|
608 | else |
|
|
609 | { |
|
|
610 | buf [0] = 0x81; |
|
|
611 | buf [1] = 126; |
|
|
612 | buf [2] = len >> 8; |
|
|
613 | buf [3] = len; |
|
|
614 | |
|
|
615 | send (buf, len + 4); |
|
|
616 | } |
|
|
617 | } |
|
|
618 | else if (ws_version == 13) |
|
|
619 | { |
|
|
620 | int len = sl.length (); |
|
|
621 | |
|
|
622 | if (len < 126) |
|
|
623 | { |
|
|
624 | uint8 hdr [] = { 0x82, len }; |
|
|
625 | send (hdr, sizeof (hdr)); |
|
|
626 | } |
|
|
627 | else |
|
|
628 | { |
|
|
629 | uint8 hdr [] = { 0x82, 126, len >> 8, len }; |
|
|
630 | send (hdr, sizeof (hdr)); |
|
|
631 | } |
|
|
632 | |
|
|
633 | send (sl.buf_ + sl.hdrlen, len); |
|
|
634 | } |
|
|
635 | else |
|
|
636 | { |
478 | assert (sl.hdrlen == 2); |
637 | assert (sl.hdrlen == 2); |
479 | |
638 | |
480 | sl.buf_ [0] = sl.length () >> 8; |
639 | sl.buf_ [0] = sl.length () >> 8; |
481 | sl.buf_ [1] = sl.length () ; |
640 | sl.buf_ [1] = sl.length () ; |
482 | |
641 | |
483 | send (sl.buf_, sl.length () + sl.hdrlen); |
642 | send (sl.buf_, sl.length () + sl.hdrlen); |
|
|
643 | } |
484 | } |
644 | } |
485 | |
645 | |
486 | void |
646 | void |
487 | client::send_packet (const char *buf, int len) |
647 | client::send_packet (const char *buf, int len) |
488 | { |
648 | { |
… | |
… | |
509 | va_end (ap); |
669 | va_end (ap); |
510 | |
670 | |
511 | send_packet (sl); |
671 | send_packet (sl); |
512 | } |
672 | } |
513 | |
673 | |
514 | // returns true when the message needs special (read: perl) treatment |
|
|
515 | static bool |
|
|
516 | msg_is_special (const char *msg) |
|
|
517 | { |
|
|
518 | return msg [strcspn (msg, "<[&\n")]; |
|
|
519 | } |
|
|
520 | |
|
|
521 | void |
674 | void |
522 | client::send_msg (int color, const char *type, const char *msg) |
675 | client::send_msg (int color, const char *type, const char *msg) |
523 | { |
676 | { |
|
|
677 | if (!msg || !type) // it can happen (for example, missing attack messages cause this) |
|
|
678 | { |
|
|
679 | LOG (logBacktrace | llevError, "send_msg(%d,%p,%p) called with NULL msg or type.\n", color, type, msg); |
|
|
680 | return; |
|
|
681 | } |
|
|
682 | |
|
|
683 | int len = strlen (msg); |
|
|
684 | |
|
|
685 | if (!(color & NDI_VERBATIM) |
524 | if (msg_is_special (msg)) |
686 | && (msg_is_special (msg) |
|
|
687 | || (type [0] == 'c' && type [1] == '/') || len > (MAXSOCKBUF - 128))) |
525 | cfperl_send_msg (this, color, type, msg); |
688 | cfperl_send_msg (this, color, type, msg); |
526 | else if (can_msg) |
689 | else |
527 | send_packet_printf ("msg %d %s %s", color & NDI_CLIENT_MASK, type, msg); |
690 | send_packet_printf ("msg %d %s %s", color & NDI_CLIENT_MASK, type, msg); |
528 | else if (color < 0) |
|
|
529 | return; // client cannot handle this |
|
|
530 | else |
|
|
531 | send_packet_printf ("drawinfo %d %s", color & NDI_COLOR_MASK, msg); |
|
|
532 | } |
691 | } |
533 | |
692 | |
534 | void |
693 | void |
535 | client::send_drawinfo (const char *msg, int flags) |
694 | client::send_drawinfo (const char *msg, int flags) |
536 | { |
695 | { |
… | |
… | |
552 | *cur++ = ' '; |
711 | *cur++ = ' '; |
553 | } |
712 | } |
554 | |
713 | |
555 | packet &packet::operator <<(const ber32 v) |
714 | packet &packet::operator <<(const ber32 v) |
556 | { |
715 | { |
557 | enum { maxlen = 32 / 7 + 1}; |
716 | enum { maxlen = 32 / 7 + 1 }; |
558 | uint8 buf[maxlen]; |
717 | uint8 buf[maxlen]; |
559 | uint8 *p = buf + maxlen; |
718 | uint8 *p = buf + maxlen; |
560 | uint32 val = v.val; |
719 | uint32 val = v.val; |
561 | |
720 | |
562 | *--p = val & 0x7F; |
721 | *--p = val & 0x7F; |