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 | |
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|
49 | #if HAVE_TCP_INFO |
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50 | // check time of last ack, and, if too old, kill connection |
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51 | socklen_t len = sizeof (tcpi); |
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52 | |
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53 | if (!getsockopt (fd, IPPROTO_TCP, TCP_INFO, &tcpi, &len) && len == sizeof (tcpi)) |
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54 | { |
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55 | if (tcpi.tcpi_snd_mss) |
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56 | mss = tcpi.tcpi_snd_mss; |
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57 | |
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58 | #if 0 |
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59 | fprintf (stderr, "uack %d ack %d lost %d ret %d fack %d sst %d cwnd %d mss %d pmtu %d advmss %d EXC %d\n", |
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60 | tcpi.tcpi_unacked, |
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61 | tcpi.tcpi_sacked, |
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62 | tcpi.tcpi_lost, |
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63 | tcpi.tcpi_retrans, |
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64 | tcpi.tcpi_fackets, |
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65 | tcpi.tcpi_snd_ssthresh, tcpi.tcpi_snd_cwnd, tcpi.tcpi_advmss, tcpi.tcpi_pmtu, tcpi.tcpi_advmss, |
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66 | |
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67 | tcpi.tcpi_snd_cwnd - (tcpi.tcpi_unacked - tcpi.tcpi_sacked)); |
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68 | #endif |
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69 | |
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70 | // do this only when player is active |
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71 | if (pl && pl->active |
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72 | && tcpi.tcpi_last_ack_recv > int (SOCKET_TIMEOUT * 1000)) |
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73 | { |
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74 | send_msg (NDI_RED | NDI_REPLY, "connection-timeout", "safety disconnect due to tcp/ip timeout (no packets received)"); |
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75 | write_outputbuffer (); |
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76 | |
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77 | LOG (llevDebug, "connection on fd %d closed due to ack timeout (%u/%u/%u)\n", fd, |
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78 | (unsigned)tcpi.tcpi_last_ack_recv, (unsigned)tcpi.tcpi_last_data_sent, (unsigned)tcpi.tcpi_unacked); |
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79 | destroy (); |
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80 | } |
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81 | } |
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82 | #endif |
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83 | |
45 | |
84 | /** |
46 | /** |
85 | * Writes data to socket. |
47 | * Writes data to socket. |
86 | * |
48 | * |
87 | * 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 |
88 | * is called to write it out. |
50 | * is called to write it out. |
89 | */ |
51 | */ |
90 | |
52 | |
91 | // 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. |
92 | if (!outputbuffer.len) |
54 | if (!outputbuffer.len) |
93 | { |
55 | { |
94 | if (last_send + IDLE_PING <= NOW && pl && pl->active) |
56 | if (last_send + IDLE_PING <= NOW && pl && pl->active) |
95 | { |
57 | { |
96 | // 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 |
97 | // nop'able commands and they are quite small. |
59 | // nop'able command and it is quite small. |
98 | packet sl (mapmode == Map1Cmd ? "map1" : "map1a"); |
60 | packet sl ("map1a"); |
99 | send_packet (sl); |
61 | send_packet (sl); |
100 | } |
62 | } |
101 | else |
63 | else |
102 | return; |
64 | return; |
103 | } |
65 | } |
104 | |
66 | |
105 | if (socket_ev.poll () & PE_W) |
67 | if (socket_ev.poll () & EV_WRITE) |
106 | return; |
68 | return; |
107 | |
69 | |
108 | last_send = NOW; |
70 | last_send = NOW; |
109 | write_outputbuffer (); |
71 | write_outputbuffer (); |
110 | } |
72 | } |
… | |
… | |
137 | // just retry |
99 | // just retry |
138 | } |
100 | } |
139 | else if (errno == EAGAIN) |
101 | else if (errno == EAGAIN) |
140 | { |
102 | { |
141 | // delay till ready |
103 | // delay till ready |
142 | socket_ev.poll (socket_ev.poll () | PE_W); |
104 | socket_ev.poll (socket_ev.poll () | EV_WRITE); |
143 | socket_ev.start (); |
105 | socket_ev.start (); |
144 | return; |
106 | return; |
145 | } |
107 | } |
146 | else |
108 | else |
147 | { |
109 | { |
… | |
… | |
149 | destroy (); |
111 | destroy (); |
150 | return; |
112 | return; |
151 | } |
113 | } |
152 | } |
114 | } |
153 | |
115 | |
154 | socket_ev.poll (socket_ev.poll () & ~PE_W); |
116 | socket_ev.poll (socket_ev.poll () & ~EV_WRITE); |
155 | } |
117 | } |
156 | |
118 | |
157 | /****************************************************************************** |
119 | /****************************************************************************** |
158 | * |
120 | * |
159 | * Start of read routines. |
121 | * Start of read routines. |
… | |
… | |
194 | ****************************************************************************/ |
156 | ****************************************************************************/ |
195 | |
157 | |
196 | // SocketCommand, PlayingCommand, should not exist with those ugly casts |
158 | // SocketCommand, PlayingCommand, should not exist with those ugly casts |
197 | #define SC(cb) (void *)static_cast<void (*)(char *, int, client *)>(cb), |
159 | #define SC(cb) (void *)static_cast<void (*)(char *, int, client *)>(cb), |
198 | #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 | |
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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 | } |
199 | |
167 | |
200 | /** |
168 | /** |
201 | * Dispatch table for the server. |
169 | * Dispatch table for the server. |
202 | */ |
170 | */ |
203 | static struct packet_type packets[] = { |
171 | static struct packet_type packets[] = { |
… | |
… | |
209 | {"apply", PC(ApplyCmd) PF_PLAYING }, |
177 | {"apply", PC(ApplyCmd) PF_PLAYING }, |
210 | {"lookat", PC(LookAt) PF_PLAYING }, |
178 | {"lookat", PC(LookAt) PF_PLAYING }, |
211 | {"lock", PC(LockItem) PF_PLAYING }, |
179 | {"lock", PC(LockItem) PF_PLAYING }, |
212 | {"mark", PC(MarkItem) PF_PLAYING }, |
180 | {"mark", PC(MarkItem) PF_PLAYING }, |
213 | {"move", PC(MoveCmd) PF_PLAYING }, |
181 | {"move", PC(MoveCmd) PF_PLAYING }, |
214 | {"ext", PC(ExtCmd) 0 }, // CF+ |
182 | {"ext", PC(ExtCmd) 0 }, // CF+/Deliantra |
215 | {"mapredraw", PC(MapRedrawCmd) 0 }, |
183 | {"mapredraw", PC(MapRedrawCmd) 0 }, |
216 | {"mapinfo", PC(MapInfoCmd) 0 }, // CF+ |
184 | {"mapinfo", PC(MapInfoCmd) 0 }, // CF+/Deliantra |
217 | |
185 | |
218 | {"reply", SC(ReplyCmd) 0 }, |
186 | {"reply", SC(ReplyCmd) 0 }, |
219 | {"exti", SC(ExtiCmd) 0 }, // CF+ |
187 | {"exti", SC(ExtiCmd) 0 }, // CF+/Deliantra |
220 | {"addme", SC(AddMeCmd) 0 }, |
188 | {"addme", SC(AddMeCmd) 0 }, |
221 | {"askface", SC(AskFaceCmd) 0 }, |
189 | {"askface", SC(AskFaceCmd) 0 }, |
222 | {"requestinfo", SC(RequestInfo) 0 }, |
190 | {"requestinfo", SC(RequestInfo) 0 }, |
223 | {"setfacemode", SC(SetFaceMode) 0 }, |
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|
224 | {"setsound", SC(SetSound) 0 }, |
191 | {"setsound", SC(SetSound) 0 }, |
225 | {"setup", SC(SetUp) 0 }, |
192 | {"setup", SC(SetUp) 0 }, |
226 | {"version", SC(VersionCmd) 0 }, |
193 | {"version", SC(VersionCmd) 0 }, |
227 | {"toggleextendedinfos", SC(ToggleExtendedInfos) 0 }, /*Added: tchize */ |
194 | |
228 | {"toggleextendedtext", SC(ToggleExtendedText) 0 }, /*Added: tchize */ |
195 | {"toggleextendedtext", SC(NopCmd) 0 }, // deliantra: disabled |
229 | {"asksmooth", SC(AskSmooth) 0 }, /*Added: tchize (smoothing technologies) */ |
|
|
230 | }; |
196 | }; |
231 | |
197 | |
232 | bool |
198 | bool |
233 | client::may_execute (const packet_type *pkt) const |
199 | client::may_execute (const packet_type *pkt) const |
234 | { |
200 | { |
235 | return (!(pkt->flags & PF_PLAYER) || pl) |
201 | return (!(pkt->flags & PF_PLAYER) || pl) |
236 | && (!(pkt->flags & PF_PLAYING) || state == ST_PLAYING); |
202 | && (!(pkt->flags & PF_PLAYING) || state == ST_PLAYING); |
237 | } |
203 | } |
238 | |
204 | |
239 | // HACK: some commands currently should be executed |
205 | // HACK: some commands currently should be executed |
240 | // even when the player is frozen. this hack detects |
206 | // even when the player is frozen. this hack detects |
241 | // those commands. it should be folded into may_execute, |
207 | // those commands. it should be folded into may_execute, |
242 | // but kept seperate to emphasise the hack aspect, i.e. |
208 | // but kept seperate to emphasise the hack aspect, i.e. |
243 | // do it better, then remove. |
209 | // do it better, then remove. |
244 | static bool |
210 | static bool |
… | |
… | |
254 | { |
220 | { |
255 | data += 6; |
221 | data += 6; |
256 | len -= 6; |
222 | len -= 6; |
257 | } |
223 | } |
258 | |
224 | |
259 | if (len > 4 && !strncmp (data, "say " , 4)) |
225 | if (len > 4 && data [ 3] == ' ' && !strncmp (data, "say " , 4)) return true; |
260 | return true; |
226 | if (len > 5 && data [ 4] == ' ' && !strncmp (data, "chat " , 5)) return true; |
261 | if (len > 5 && !strncmp (data, "chat ", 5)) |
227 | if (len > 6 && data [ 5] == ' ' && !strncmp (data, "shout " , 6)) return true; |
262 | return true; |
228 | if (len > 8 && data [ 7] == ' ' && !strncmp (data, "suicide " , 8)) return true; |
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229 | if (len > 18 && data [17] == ' ' && !strncmp (data, "accept-invitation ", 18)) return true; |
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230 | |
|
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231 | if (len == 7 && !strcmp (data, "suicide")) return true; |
263 | |
232 | |
264 | return false; |
233 | return false; |
265 | } |
234 | } |
266 | |
235 | |
267 | void |
236 | void |
… | |
… | |
269 | { |
238 | { |
270 | if (may_execute (pkt) || always_immediate (this, pkt, data, datalen)) |
239 | if (may_execute (pkt) || always_immediate (this, pkt, data, datalen)) |
271 | { |
240 | { |
272 | //TODO: only one format |
241 | //TODO: only one format |
273 | if (pkt->flags & PF_PLAYER) |
242 | if (pkt->flags & PF_PLAYER) |
|
|
243 | { |
274 | ((void (*)(char *, int, player *))pkt->cb)((char *)data, datalen, pl); |
244 | ((void (*)(char *, int, player *))pkt->cb)((char *)data, datalen, pl); |
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245 | pl->need_updated_stats (); |
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246 | } |
275 | else |
247 | else |
276 | ((void (*)(char *, int, client *))pkt->cb)((char *)data, datalen, this); |
248 | ((void (*)(char *, int, client *))pkt->cb)((char *)data, datalen, this); |
277 | } |
249 | } |
278 | else |
250 | else |
279 | send_packet_printf ("drawinfo %d ERROR: you cannot execute '%s' now.", NDI_RED | NDI_REPLY, pkt->name); |
251 | send_packet_printf ("drawinfo %d ERROR: you cannot execute '%s' now.", NDI_RED | NDI_REPLY, pkt->name); |
… | |
… | |
292 | pl && pl->ob ? &pl->ob->name : "[anonymous]"); |
264 | pl && pl->ob ? &pl->ob->name : "[anonymous]"); |
293 | destroy (); |
265 | destroy (); |
294 | return false; |
266 | return false; |
295 | } |
267 | } |
296 | |
268 | |
|
|
269 | uint8_t save_byte = inbuf [pkt_len]; // rather ugly |
297 | inbuf [pkt_len] = 0; /* Terminate buffer - useful for string data */ |
270 | inbuf [pkt_len] = 0; /* temporarily terminate buffer - useful for string data */ |
298 | |
271 | |
299 | /* First, break out beginning word. There are at least |
272 | /* First, break out beginning word. There are at least |
300 | * a few commands that do not have any paremeters. If |
273 | * a few commands that do not have any paremeters. If |
301 | * we get such a command, don't worry about trying |
274 | * we get such a command, don't worry about trying |
302 | * to break it up. |
275 | * to break it up. |
… | |
… | |
313 | { |
286 | { |
314 | data = (char *)inbuf + 2; // better read garbage than segfault |
287 | data = (char *)inbuf + 2; // better read garbage than segfault |
315 | datalen = 0; |
288 | datalen = 0; |
316 | } |
289 | } |
317 | |
290 | |
318 | for (packet_type *pkt = packets; pkt < packets + (sizeof (packets) / sizeof (packets[0])); ++pkt) |
291 | for (packet_type *pkt = packets; pkt < packets + array_length (packets); ++pkt) |
319 | if (!strcmp ((char *)inbuf + 2, pkt->name)) |
292 | if (!strcmp ((char *)inbuf + 2, pkt->name)) |
320 | { |
293 | { |
321 | if (pkt->flags & PF_PLAYER && !always_immediate (this, pkt, data, datalen)) |
294 | if (pkt->flags & PF_PLAYER && !always_immediate (this, pkt, data, datalen)) |
322 | queue_command (pkt, data, datalen); |
295 | queue_command (pkt, data, datalen); |
323 | else |
296 | else |
… | |
… | |
326 | goto next_packet; |
299 | goto next_packet; |
327 | } |
300 | } |
328 | |
301 | |
329 | // If we get here, we didn't find a valid command. |
302 | // If we get here, we didn't find a valid command. |
330 | send_packet_printf ("drawinfo %d ERROR: command '%s' not supported.", NDI_RED | NDI_REPLY, (char *)inbuf + 2); |
303 | send_packet_printf ("drawinfo %d ERROR: command '%s' not supported.", NDI_RED | NDI_REPLY, (char *)inbuf + 2); |
|
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304 | |
331 | next_packet: |
305 | next_packet: |
|
|
306 | inbuf [pkt_len] = save_byte; // rather ugly |
332 | skip_packet (pkt_len); |
307 | skip_packet (pkt_len); |
333 | |
308 | |
334 | // input buffer has space again |
309 | // input buffer has space again |
335 | socket_ev.poll (socket_ev.poll () | PE_R); |
310 | socket_ev.poll (socket_ev.poll () | EV_READ); |
336 | |
311 | |
337 | return true; |
312 | return true; |
338 | } |
313 | } |
339 | |
314 | |
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315 | void |
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316 | client::inbuf_handle () |
|
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317 | { |
|
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318 | if (!handle_packet ()) |
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319 | return; |
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320 | |
|
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321 | while (handle_packet ()) |
|
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322 | ; |
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323 | |
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324 | flush (); |
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325 | } |
|
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326 | |
340 | // callback called when socket is either readable or writable |
327 | // callback called when socket is either readable or writable |
341 | void |
328 | void |
342 | client::socket_cb (iow &w, int got) |
329 | client::socket_cb (iow &w, int revents) |
343 | { |
330 | { |
344 | //TODO remove when we have better socket cleanup logic |
331 | //TODO remove when we have better socket cleanup logic |
345 | if (destroyed ()) |
332 | if (destroyed ()) |
346 | { |
333 | { |
347 | socket_ev.poll (0); |
334 | socket_ev.poll (0); |
348 | return; |
335 | return; |
349 | } |
336 | } |
350 | |
337 | |
351 | if (got & PE_W) |
338 | if (revents & EV_WRITE) |
352 | { |
339 | { |
353 | write_outputbuffer (); |
340 | write_outputbuffer (); |
354 | |
341 | |
355 | if (!outputbuffer.len) |
342 | if (!outputbuffer.len) |
356 | socket_ev.poll (socket_ev.poll () & ~PE_W); |
343 | socket_ev.poll (socket_ev.poll () & ~EV_WRITE); |
357 | } |
|
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358 | |
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359 | if (got & PE_R) |
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360 | { |
344 | } |
361 | //TODO: rate-limit tcp connection in better ways, important |
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362 | |
345 | |
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346 | if (revents & EV_READ) |
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347 | { |
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348 | int amount; |
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349 | uint8 *rbuf; |
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350 | |
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351 | if (ws_version) |
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352 | { |
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353 | if (ws_inbuf_len + 2048 > ws_inbuf_alloc) |
|
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354 | ws_inbuf = (uint8 *)realloc (ws_inbuf, ws_inbuf_alloc += 4096); |
|
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355 | |
|
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356 | rbuf = ws_inbuf + ws_inbuf_len; |
|
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357 | amount = ws_inbuf_alloc - ws_inbuf_len; |
|
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358 | } |
|
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359 | else |
|
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360 | { |
|
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361 | rbuf = inbuf + inbuf_len; |
363 | int amount = sizeof (inbuf) - inbuf_len; |
362 | amount = sizeof (inbuf) - inbuf_len; |
|
|
363 | } |
364 | |
364 | |
365 | if (!amount) |
365 | if (!amount) |
366 | { |
366 | { |
367 | // input buffer full |
367 | // input buffer full |
368 | socket_ev.poll (socket_ev.poll () & ~PE_R); |
368 | LOG (llevError, "input buffer overflow."); |
|
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369 | destroy (); |
369 | return; |
370 | return; |
370 | } |
371 | } |
371 | |
372 | |
372 | amount = read (fd, inbuf + inbuf_len, amount); |
373 | amount = read (fd, rbuf, amount); |
373 | |
374 | |
374 | if (!amount) |
375 | if (!amount) |
375 | { |
376 | { |
376 | destroy (); |
377 | destroy (); |
377 | return; |
378 | return; |
… | |
… | |
385 | return; |
386 | return; |
386 | } |
387 | } |
387 | |
388 | |
388 | // should not be here, normally |
389 | // should not be here, normally |
389 | } |
390 | } |
|
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391 | |
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392 | if (ws_version) |
|
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393 | { |
|
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394 | ws_inbuf_len += amount; |
|
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395 | |
|
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396 | while (ws_inbuf_len) |
|
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397 | { |
|
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398 | if (ws_inbuf_len < 2 + 4) // 6 is minimum length: op, len, mask |
|
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399 | break; |
|
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400 | |
|
|
401 | int d = 2; |
|
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402 | int fin = ws_inbuf [0] & 0x80; |
|
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403 | int op = ws_inbuf [0] & 0x0f; |
|
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404 | int len = ws_inbuf [1] & 0x7f; |
|
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405 | |
|
|
406 | if (len == 126) |
|
|
407 | { |
|
|
408 | len = (ws_inbuf [2] << 8) | ws_inbuf [3]; |
|
|
409 | d += 2; |
|
|
410 | } |
|
|
411 | else if (len == 127) |
|
|
412 | { |
|
|
413 | if (ws_inbuf_len < 2 + 8) |
|
|
414 | return; |
|
|
415 | |
|
|
416 | // we don't do extra long frames, if a browser wants to send >2**32 bytes, |
|
|
417 | // there are bigger issues to fix. |
|
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418 | len = (ws_inbuf [8] << 8) | ws_inbuf [9]; |
|
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419 | d += 8; |
|
|
420 | } |
|
|
421 | |
|
|
422 | // we only continue if we have a complete frame |
|
|
423 | if (ws_inbuf_len < d + 4 + len) |
|
|
424 | return; |
|
|
425 | |
|
|
426 | switch (op) |
|
|
427 | { |
|
|
428 | case 0: op = ws_inbuf_type; break; // continuation |
|
|
429 | case 1: ws_inbuf_type = 1; break; // utf-8 |
|
|
430 | case 2: ws_inbuf_type = 2; break; // binary |
|
|
431 | } |
|
|
432 | |
|
|
433 | if (len > sizeof (inbuf) - inbuf_len) |
|
|
434 | { |
|
|
435 | // input buffer full |
|
|
436 | LOG (llevError, "input buffer overflow (ws)."); |
|
|
437 | destroy (); |
|
|
438 | return; |
|
|
439 | } |
|
|
440 | |
|
|
441 | uint8 *buf = inbuf + inbuf_len + 2; |
|
|
442 | |
|
|
443 | for (int i = 0; i < len; ++i) |
|
|
444 | buf [i] = ws_inbuf [d + 4 + i] ^ ws_inbuf [d + (i & 3)]; |
|
|
445 | |
|
|
446 | // remove frame |
|
|
447 | ws_inbuf_len -= d + 4 + len; |
|
|
448 | memmove (ws_inbuf, ws_inbuf + d + 4 + len, ws_inbuf_len); |
|
|
449 | |
|
|
450 | switch (op) |
|
|
451 | { |
|
|
452 | case 1: // utf-8 |
|
|
453 | // utf-8 encoded frames cannot have full length (MAXSOCKBUF) in all cases |
|
|
454 | // but we assume that these extra-long packets will be rare. |
|
|
455 | { |
|
|
456 | uint8 *a = buf; |
|
|
457 | uint8 *b = a; |
|
|
458 | uint8 *c = a + len; |
|
|
459 | |
|
|
460 | for (; a < c; ++a, ++b) |
|
|
461 | { |
|
|
462 | *b = *a; |
|
|
463 | |
|
|
464 | if (*a >= 0x80) |
|
|
465 | *b = (a [0] & 0x1f) << 6 | (a [1] & 0x3f), ++a; |
|
|
466 | } |
|
|
467 | |
|
|
468 | len -= a - b; |
|
|
469 | } |
|
|
470 | /* FALLTHROUGH */ |
|
|
471 | case 2: // binary |
|
|
472 | inbuf_len += len; |
|
|
473 | |
|
|
474 | if (fin) |
|
|
475 | { |
|
|
476 | inbuf [0] = inbuf_len >> 8; |
|
|
477 | inbuf [1] = inbuf_len; |
|
|
478 | |
|
|
479 | inbuf_len += 2; |
|
|
480 | |
|
|
481 | inbuf_handle (); |
|
|
482 | } |
|
|
483 | break; |
|
|
484 | |
|
|
485 | case 9: // ping |
|
|
486 | { |
|
|
487 | // send pong - we assume ping messages are <64k |
|
|
488 | // as we can't handle >10k at the moment anyway. |
|
|
489 | uint8 hdr [] = { 0x8a, 126, len >> 8, len }; |
|
|
490 | send (hdr, sizeof (hdr)); |
|
|
491 | send (inbuf + inbuf_len, len); |
|
|
492 | } |
|
|
493 | break; |
|
|
494 | |
|
|
495 | case 10: // pong |
|
|
496 | break; |
|
|
497 | |
|
|
498 | case 8: // close |
|
|
499 | default: |
|
|
500 | destroy (); |
|
|
501 | return; |
|
|
502 | } |
|
|
503 | } |
|
|
504 | } |
390 | else |
505 | else |
391 | { |
506 | { |
392 | inbuf_len += amount; |
507 | inbuf_len += amount; |
393 | |
508 | inbuf_handle (); |
394 | cmd_ev.start (); |
|
|
395 | } |
509 | } |
396 | } |
510 | } |
397 | } |
|
|
398 | |
|
|
399 | // called whenever we have additional commands to process |
|
|
400 | void |
|
|
401 | client::cmd_cb (iw &w) |
|
|
402 | { |
|
|
403 | if (handle_packet ()) |
|
|
404 | w.start (); |
|
|
405 | else |
|
|
406 | flush (); |
|
|
407 | } |
511 | } |
408 | |
512 | |
409 | /******************************************************************************* |
513 | /******************************************************************************* |
410 | * |
514 | * |
411 | * Start of write related routines. |
515 | * Start of write related routines. |
… | |
… | |
467 | client::send_packet (packet &sl) |
571 | client::send_packet (packet &sl) |
468 | { |
572 | { |
469 | if (destroyed ()) |
573 | if (destroyed ()) |
470 | return; |
574 | return; |
471 | |
575 | |
472 | if (sl.length () >= MAXSOCKBUF) |
576 | if (sl.length () > MAXSOCKBUF) |
473 | { |
577 | { |
474 | LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ()); |
578 | LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ()); |
475 | /* Almost certainly we've overflowed a buffer, so quit now to make |
579 | /* Almost certainly we've overflowed a buffer, so quit now to make |
476 | * it easier to debug. |
580 | * it easier to debug. |
477 | */ |
581 | */ |
… | |
… | |
479 | } |
583 | } |
480 | |
584 | |
481 | if (!sl.length ()) |
585 | if (!sl.length ()) |
482 | return; |
586 | return; |
483 | |
587 | |
|
|
588 | if (ws_version == 8) |
|
|
589 | { |
|
|
590 | static uint8 buf [MAXSOCKBUF * 2 + 4]; |
|
|
591 | |
|
|
592 | uint8 *b = buf + 4; |
|
|
593 | for (uint8 *a = sl.buf_ + sl.hdrlen; a < sl.cur; ++a) |
|
|
594 | { |
|
|
595 | if (*a < 0x80) |
|
|
596 | *b++ = *a; |
|
|
597 | else |
|
|
598 | { |
|
|
599 | *b++ = 0xc0 | ((*a >> 6) & 0x1f); |
|
|
600 | *b++ = 0x80 | ( *a & 0x3f); |
|
|
601 | } |
|
|
602 | } |
|
|
603 | |
|
|
604 | assert (b - buf < sizeof (buf)); |
|
|
605 | |
|
|
606 | int len = b - (buf + 4); |
|
|
607 | |
|
|
608 | if (len < 126) |
|
|
609 | { |
|
|
610 | buf [2] = 0x81; |
|
|
611 | buf [3] = len; |
|
|
612 | |
|
|
613 | send (buf + 2, len + 2); |
|
|
614 | } |
|
|
615 | else |
|
|
616 | { |
|
|
617 | buf [0] = 0x81; |
|
|
618 | buf [1] = 126; |
|
|
619 | buf [2] = len >> 8; |
|
|
620 | buf [3] = len; |
|
|
621 | |
|
|
622 | send (buf, len + 4); |
|
|
623 | } |
|
|
624 | } |
|
|
625 | else if (ws_version == 13) |
|
|
626 | { |
|
|
627 | int len = sl.length (); |
|
|
628 | |
|
|
629 | if (len < 126) |
|
|
630 | { |
|
|
631 | uint8 hdr [] = { 0x82, len }; |
|
|
632 | send (hdr, sizeof (hdr)); |
|
|
633 | } |
|
|
634 | else |
|
|
635 | { |
|
|
636 | uint8 hdr [] = { 0x82, 126, len >> 8, len }; |
|
|
637 | send (hdr, sizeof (hdr)); |
|
|
638 | } |
|
|
639 | |
|
|
640 | send (sl.buf_ + sl.hdrlen, len); |
|
|
641 | } |
|
|
642 | else |
|
|
643 | { |
484 | assert (sl.hdrlen == 2); |
644 | assert (sl.hdrlen == 2); |
485 | |
645 | |
486 | sl.buf_ [0] = sl.length () >> 8; |
646 | sl.buf_ [0] = sl.length () >> 8; |
487 | sl.buf_ [1] = sl.length () ; |
647 | sl.buf_ [1] = sl.length () ; |
488 | |
648 | |
489 | send (sl.buf_, sl.length () + sl.hdrlen); |
649 | send (sl.buf_, sl.length () + sl.hdrlen); |
|
|
650 | } |
490 | } |
651 | } |
491 | |
652 | |
492 | void |
653 | void |
493 | client::send_packet (const char *buf, int len) |
654 | client::send_packet (const char *buf, int len) |
494 | { |
655 | { |
… | |
… | |
515 | va_end (ap); |
676 | va_end (ap); |
516 | |
677 | |
517 | send_packet (sl); |
678 | send_packet (sl); |
518 | } |
679 | } |
519 | |
680 | |
520 | // returns true when the message needs special (read: perl) treatment |
|
|
521 | static bool |
|
|
522 | msg_is_special (const char *msg) |
|
|
523 | { |
|
|
524 | return msg [strcspn (msg, "<[&\n")]; |
|
|
525 | } |
|
|
526 | |
|
|
527 | void |
681 | void |
528 | client::send_msg (int color, const char *type, const char *msg) |
682 | client::send_msg (int color, const char *type, const char *msg) |
529 | { |
683 | { |
|
|
684 | if (!msg || !type) // it can happen (for example, missing attack messages cause this) |
|
|
685 | { |
|
|
686 | LOG (logBacktrace | llevError, "send_msg(%d,%p,%p) called with NULL msg or type.\n", color, type, msg); |
|
|
687 | return; |
|
|
688 | } |
|
|
689 | |
|
|
690 | int len = strlen (msg); |
|
|
691 | |
|
|
692 | if (!(color & NDI_VERBATIM) |
530 | if (msg_is_special (msg)) |
693 | && (msg_is_special (msg) |
|
|
694 | || (type [0] == 'c' && type [1] == '/') || len > (MAXSOCKBUF - 128))) |
531 | cfperl_send_msg (this, color, type, msg); |
695 | cfperl_send_msg (this, color, type, msg); |
532 | else if (can_msg) |
696 | else |
533 | send_packet_printf ("msg %d %s %s", color & NDI_CLIENT_MASK, type, msg); |
697 | send_packet_printf ("msg %d %s %s", color & NDI_CLIENT_MASK, type, msg); |
534 | else if (color < 0) |
|
|
535 | return; // client cannot handle this |
|
|
536 | else |
|
|
537 | send_packet_printf ("drawinfo %d %s", color & NDI_COLOR_MASK, msg); |
|
|
538 | } |
698 | } |
539 | |
699 | |
540 | void |
700 | void |
541 | client::send_drawinfo (const char *msg, int flags) |
701 | client::send_drawinfo (const char *msg, int flags) |
542 | { |
702 | { |
… | |
… | |
558 | *cur++ = ' '; |
718 | *cur++ = ' '; |
559 | } |
719 | } |
560 | |
720 | |
561 | packet &packet::operator <<(const ber32 v) |
721 | packet &packet::operator <<(const ber32 v) |
562 | { |
722 | { |
563 | enum { maxlen = 32 / 7 + 1}; |
723 | enum { maxlen = 32 / 7 + 1 }; |
564 | uint8 buf[maxlen]; |
724 | uint8 buf[maxlen]; |
565 | uint8 *p = buf + maxlen; |
725 | uint8 *p = buf + maxlen; |
566 | uint32 val = v.val; |
726 | uint32 val = v.val; |
567 | |
727 | |
568 | *--p = val & 0x7F; |
728 | *--p = val & 0x7F; |