1 | /* |
1 | /* |
2 | * This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game. |
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 it |
6 | * Deliantra is free software: you can redistribute it and/or modify it under |
8 | * under the terms of the GNU General Public License as published by the Free |
7 | * the terms of the Affero GNU General Public License as published by the |
9 | * Software Foundation; either version 2 of the License, or (at your option) |
8 | * Free Software Foundation, either version 3 of the License, or (at your |
10 | * any later version. |
9 | * option) any later version. |
11 | * |
10 | * |
12 | * This program is distributed in the hope that it will be useful, but |
11 | * This program is distributed in the hope that it will be useful, |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * 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 along |
16 | * You should have received a copy of the Affero GNU General Public License |
18 | * with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51 |
17 | * and the GNU General Public License along with this program. If not, see |
19 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
18 | * <http://www.gnu.org/licenses/>. |
20 | * |
19 | * |
21 | * 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> |
22 | */ |
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23 | |
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24 | /** |
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25 | * \file |
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26 | * Low-level socket-related functions. |
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27 | * |
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28 | * \date 2003-12-02 |
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29 | * |
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30 | * Contains some base functions that both the client and server |
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31 | * can use. As such, depending what we are being compiled for will |
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32 | * determine what we can include. the client is designed have |
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33 | * CFCLIENT defined as part of its compile flags. |
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34 | */ |
21 | */ |
35 | |
22 | |
36 | using namespace std; |
23 | using namespace std; |
37 | |
24 | |
38 | #include <global.h> |
25 | #include <global.h> |
39 | #include <sproto.h> |
26 | #include <sproto.h> |
40 | #include <cstdarg> |
27 | #include <cstdarg> |
41 | |
28 | |
42 | #ifdef __linux__ |
29 | #if HAVE_TCP_INFO |
43 | # include <sys/types.h> |
30 | # include <sys/types.h> |
44 | # include <sys/socket.h> |
31 | # include <sys/socket.h> |
45 | # include <netinet/in.h> |
32 | # include <netinet/in.h> |
46 | # include <netinet/tcp.h> |
33 | # include <netinet/tcp.h> |
47 | #endif |
34 | #endif |
48 | |
35 | |
49 | // disconnect a socket after this many seconds without an ack |
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50 | #define SOCKET_TIMEOUT 8. |
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51 | |
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52 | // force a packet when idle for more than this many seconds, |
36 | // force a packet when idle for more than this many seconds, |
53 | // forcing an ack regularly. |
37 | // forcing an ack regularly. |
54 | #define IDLE_PING 2. |
38 | #define IDLE_PING 2. |
55 | |
39 | |
56 | void |
40 | void |
57 | client::flush () |
41 | client::flush () |
58 | { |
42 | { |
59 | if (destroyed ()) |
43 | if (destroyed ()) |
60 | return; |
44 | return; |
61 | |
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62 | #ifdef __linux__ //TODO: this is available on bsds, too, use a configure test. |
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63 | // check about once per second, spread evenly over all clients |
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64 | if (!((pticks + fd) & 7)) |
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65 | { |
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66 | // check time of last ack, and, if too old, kill connection |
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67 | struct tcp_info tcpi; |
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68 | socklen_t len = sizeof (tcpi); |
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69 | |
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70 | if (!getsockopt (fd, IPPROTO_TCP, TCP_INFO, &tcpi, &len) && len == sizeof (tcpi)) |
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71 | { |
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72 | rtt = tcpi.tcpi_rtt; |
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73 | rttvar = tcpi.tcpi_rttvar; |
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74 | |
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75 | if (tcpi.tcpi_last_ack_recv > int (SOCKET_TIMEOUT * 1000)) |
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76 | { |
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77 | send_msg (NDI_RED, "connection-timeout", "safety disconnect due to tcp/ip timeout (no packets received)"); |
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78 | write_outputbuffer (); |
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79 | |
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80 | LOG (llevDebug, "connection on fd %d closed due to ack timeout (%u/%u/%u)\n", fd, |
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81 | (unsigned)tcpi.tcpi_last_ack_recv, (unsigned)tcpi.tcpi_last_data_sent, (unsigned)tcpi.tcpi_unacked); |
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82 | destroy (); |
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83 | } |
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84 | } |
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85 | } |
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86 | #endif |
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87 | |
45 | |
88 | /** |
46 | /** |
89 | * Writes data to socket. |
47 | * Writes data to socket. |
90 | * |
48 | * |
91 | * 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 |
… | |
… | |
93 | */ |
51 | */ |
94 | |
52 | |
95 | // write a nop to the socket at least every IDLE_NOP seconds. |
53 | // write a nop to the socket at least every IDLE_NOP seconds. |
96 | if (!outputbuffer.len) |
54 | if (!outputbuffer.len) |
97 | { |
55 | { |
98 | if (last_send + IDLE_PING <= NOW) |
56 | if (last_send + IDLE_PING <= NOW && pl && pl->active) |
99 | { |
57 | { |
100 | // 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 |
101 | // nop'able commands and they are quite small. |
59 | // nop'able command and it is quite small. |
102 | packet sl (mapmode == Map1Cmd ? "map1" : "map1a"); |
60 | packet sl ("map1a"); |
103 | send_packet (sl); |
61 | send_packet (sl); |
104 | } |
62 | } |
105 | else |
63 | else |
106 | return; |
64 | return; |
107 | } |
65 | } |
108 | |
66 | |
109 | if (socket_ev.poll () & PE_W) |
67 | if (socket_ev.poll () & EV_WRITE) |
110 | return; |
68 | return; |
111 | |
69 | |
112 | last_send = NOW; |
70 | last_send = NOW; |
113 | write_outputbuffer (); |
71 | write_outputbuffer (); |
114 | } |
72 | } |
… | |
… | |
141 | // just retry |
99 | // just retry |
142 | } |
100 | } |
143 | else if (errno == EAGAIN) |
101 | else if (errno == EAGAIN) |
144 | { |
102 | { |
145 | // delay till ready |
103 | // delay till ready |
146 | socket_ev.poll (socket_ev.poll () | PE_W); |
104 | socket_ev.poll (socket_ev.poll () | EV_WRITE); |
147 | socket_ev.start (); |
105 | socket_ev.start (); |
148 | return; |
106 | return; |
149 | } |
107 | } |
150 | else |
108 | else |
151 | { |
109 | { |
… | |
… | |
153 | destroy (); |
111 | destroy (); |
154 | return; |
112 | return; |
155 | } |
113 | } |
156 | } |
114 | } |
157 | |
115 | |
158 | socket_ev.poll (socket_ev.poll () & ~PE_W); |
116 | socket_ev.poll (socket_ev.poll () & ~EV_WRITE); |
159 | } |
117 | } |
160 | |
118 | |
161 | /****************************************************************************** |
119 | /****************************************************************************** |
162 | * |
120 | * |
163 | * Start of read routines. |
121 | * Start of read routines. |
… | |
… | |
174 | if (inbuf_len >= 2 + pkt_len) |
132 | if (inbuf_len >= 2 + pkt_len) |
175 | return 2 + pkt_len; |
133 | return 2 + pkt_len; |
176 | |
134 | |
177 | if (inbuf_len == sizeof (inbuf)) |
135 | if (inbuf_len == sizeof (inbuf)) |
178 | { |
136 | { |
179 | send_packet_printf ("drawinfo %d input buffer overflow - closing connection.", NDI_RED); |
137 | send_packet_printf ("drawinfo %d input buffer overflow - closing connection.", NDI_RED | NDI_REPLY); |
180 | destroy (); |
138 | destroy (); |
181 | return -1; |
139 | return -1; |
182 | } |
140 | } |
183 | } |
141 | } |
184 | |
142 | |
… | |
… | |
198 | ****************************************************************************/ |
156 | ****************************************************************************/ |
199 | |
157 | |
200 | // SocketCommand, PlayingCommand, should not exist with those ugly casts |
158 | // SocketCommand, PlayingCommand, should not exist with those ugly casts |
201 | #define SC(cb) (void *)static_cast<void (*)(char *, int, client *)>(cb), |
159 | #define SC(cb) (void *)static_cast<void (*)(char *, int, client *)>(cb), |
202 | #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 | } |
203 | |
167 | |
204 | /** |
168 | /** |
205 | * Dispatch table for the server. |
169 | * Dispatch table for the server. |
206 | */ |
170 | */ |
207 | static struct packet_type packets[] = { |
171 | static struct packet_type packets[] = { |
… | |
… | |
213 | {"apply", PC(ApplyCmd) PF_PLAYING }, |
177 | {"apply", PC(ApplyCmd) PF_PLAYING }, |
214 | {"lookat", PC(LookAt) PF_PLAYING }, |
178 | {"lookat", PC(LookAt) PF_PLAYING }, |
215 | {"lock", PC(LockItem) PF_PLAYING }, |
179 | {"lock", PC(LockItem) PF_PLAYING }, |
216 | {"mark", PC(MarkItem) PF_PLAYING }, |
180 | {"mark", PC(MarkItem) PF_PLAYING }, |
217 | {"move", PC(MoveCmd) PF_PLAYING }, |
181 | {"move", PC(MoveCmd) PF_PLAYING }, |
218 | {"ext", PC(ExtCmd) 0 }, // CF+ |
182 | {"ext", PC(ExtCmd) 0 }, // CF+/Deliantra |
219 | {"mapredraw", PC(MapRedrawCmd) 0 }, |
183 | {"mapredraw", PC(MapRedrawCmd) 0 }, |
220 | {"mapinfo", PC(MapInfoCmd) 0 }, // CF+ |
184 | {"mapinfo", PC(MapInfoCmd) 0 }, // CF+/Deliantra |
221 | |
185 | |
222 | {"reply", SC(ReplyCmd) 0 }, |
186 | {"reply", SC(ReplyCmd) 0 }, |
223 | {"exti", SC(ExtiCmd) 0 }, // CF+ |
187 | {"exti", SC(ExtiCmd) 0 }, // CF+/Deliantra |
224 | {"addme", SC(AddMeCmd) 0 }, |
188 | {"addme", SC(AddMeCmd) 0 }, |
225 | {"askface", SC(AskFaceCmd) 0 }, |
189 | {"askface", SC(AskFaceCmd) 0 }, |
226 | {"requestinfo", SC(RequestInfo) 0 }, |
190 | {"requestinfo", SC(RequestInfo) 0 }, |
227 | {"setfacemode", SC(SetFaceMode) 0 }, |
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228 | {"setsound", SC(SetSound) 0 }, |
191 | {"setsound", SC(SetSound) 0 }, |
229 | {"setup", SC(SetUp) 0 }, |
192 | {"setup", SC(SetUp) 0 }, |
230 | {"version", SC(VersionCmd) 0 }, |
193 | {"version", SC(VersionCmd) 0 }, |
231 | {"toggleextendedinfos", SC(ToggleExtendedInfos) 0 }, /*Added: tchize */ |
194 | |
232 | {"toggleextendedtext", SC(ToggleExtendedText) 0 }, /*Added: tchize */ |
195 | {"toggleextendedtext", SC(NopCmd) 0 }, // deliantra: disabled |
233 | {"asksmooth", SC(AskSmooth) 0 }, /*Added: tchize (smoothing technologies) */ |
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234 | }; |
196 | }; |
235 | |
197 | |
236 | bool |
198 | bool |
237 | client::may_execute (const packet_type *pkt) const |
199 | client::may_execute (const packet_type *pkt) const |
238 | { |
200 | { |
239 | return (!(pkt->flags & PF_PLAYER) || pl) |
201 | return (!(pkt->flags & PF_PLAYER) || pl) |
240 | && (!(pkt->flags & PF_PLAYING) || state == ST_PLAYING); |
202 | && (!(pkt->flags & PF_PLAYING) || state == ST_PLAYING); |
241 | } |
203 | } |
242 | |
204 | |
243 | // HACK: some commands currently should be executed |
205 | // HACK: some commands currently should be executed |
244 | // even when the player is frozen. this hack detects |
206 | // even when the player is frozen. this hack detects |
245 | // those commands. it should be folded into may_execute, |
207 | // those commands. it should be folded into may_execute, |
246 | // but kept seperate to emphasise the hack aspect, i.e. |
208 | // but kept seperate to emphasise the hack aspect, i.e. |
247 | // do it better, then remove. |
209 | // do it better, then remove. |
248 | static bool |
210 | static bool |
… | |
… | |
258 | { |
220 | { |
259 | data += 6; |
221 | data += 6; |
260 | len -= 6; |
222 | len -= 6; |
261 | } |
223 | } |
262 | |
224 | |
263 | if (len > 4 && !strncmp (data, "say " , 4)) |
225 | if (len > 4 && data [ 3] == ' ' && !strncmp (data, "say " , 4)) return true; |
264 | return true; |
226 | if (len > 5 && data [ 4] == ' ' && !strncmp (data, "chat " , 5)) return true; |
265 | if (len > 5 && !strncmp (data, "chat ", 5)) |
227 | if (len > 6 && data [ 5] == ' ' && !strncmp (data, "shout " , 6)) return true; |
266 | 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; |
267 | |
232 | |
268 | return false; |
233 | return false; |
269 | } |
234 | } |
270 | |
235 | |
271 | void |
236 | void |
… | |
… | |
273 | { |
238 | { |
274 | if (may_execute (pkt) || always_immediate (this, pkt, data, datalen)) |
239 | if (may_execute (pkt) || always_immediate (this, pkt, data, datalen)) |
275 | { |
240 | { |
276 | //TODO: only one format |
241 | //TODO: only one format |
277 | if (pkt->flags & PF_PLAYER) |
242 | if (pkt->flags & PF_PLAYER) |
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243 | { |
278 | ((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 | } |
279 | else |
247 | else |
280 | ((void (*)(char *, int, client *))pkt->cb)((char *)data, datalen, this); |
248 | ((void (*)(char *, int, client *))pkt->cb)((char *)data, datalen, this); |
281 | } |
249 | } |
282 | else |
250 | else |
283 | send_packet_printf ("drawinfo %d ERROR: you cannot execute '%s' now.", NDI_RED, pkt->name); |
251 | send_packet_printf ("drawinfo %d ERROR: you cannot execute '%s' now.", NDI_RED | NDI_REPLY, pkt->name); |
284 | } |
252 | } |
285 | |
253 | |
286 | bool |
254 | bool |
287 | client::handle_packet () |
255 | client::handle_packet () |
288 | { |
256 | { |
… | |
… | |
296 | pl && pl->ob ? &pl->ob->name : "[anonymous]"); |
264 | pl && pl->ob ? &pl->ob->name : "[anonymous]"); |
297 | destroy (); |
265 | destroy (); |
298 | return false; |
266 | return false; |
299 | } |
267 | } |
300 | |
268 | |
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269 | uint8_t save_byte = inbuf [pkt_len]; // rather ugly |
301 | inbuf [pkt_len] = 0; /* Terminate buffer - useful for string data */ |
270 | inbuf [pkt_len] = 0; /* temporarily terminate buffer - useful for string data */ |
302 | |
271 | |
303 | /* First, break out beginning word. There are at least |
272 | /* First, break out beginning word. There are at least |
304 | * a few commands that do not have any paremeters. If |
273 | * a few commands that do not have any paremeters. If |
305 | * we get such a command, don't worry about trying |
274 | * we get such a command, don't worry about trying |
306 | * to break it up. |
275 | * to break it up. |
… | |
… | |
317 | { |
286 | { |
318 | data = (char *)inbuf + 2; // better read garbage than segfault |
287 | data = (char *)inbuf + 2; // better read garbage than segfault |
319 | datalen = 0; |
288 | datalen = 0; |
320 | } |
289 | } |
321 | |
290 | |
322 | 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) |
323 | if (!strcmp ((char *)inbuf + 2, pkt->name)) |
292 | if (!strcmp ((char *)inbuf + 2, pkt->name)) |
324 | { |
293 | { |
325 | if (pkt->flags & PF_PLAYER && !always_immediate (this, pkt, data, datalen)) |
294 | if (pkt->flags & PF_PLAYER && !always_immediate (this, pkt, data, datalen)) |
326 | queue_command (pkt, data, datalen); |
295 | queue_command (pkt, data, datalen); |
327 | else |
296 | else |
… | |
… | |
329 | |
298 | |
330 | goto next_packet; |
299 | goto next_packet; |
331 | } |
300 | } |
332 | |
301 | |
333 | // If we get here, we didn't find a valid command. |
302 | // If we get here, we didn't find a valid command. |
334 | send_packet_printf ("drawinfo %d ERROR: command '%s' not supported.", NDI_RED, (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 | |
335 | next_packet: |
305 | next_packet: |
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306 | inbuf [pkt_len] = save_byte; // rather ugly |
336 | skip_packet (pkt_len); |
307 | skip_packet (pkt_len); |
337 | |
308 | |
338 | // input buffer has space again |
309 | // input buffer has space again |
339 | socket_ev.poll (socket_ev.poll () | PE_R); |
310 | socket_ev.poll (socket_ev.poll () | EV_READ); |
340 | |
311 | |
341 | return true; |
312 | return true; |
342 | } |
313 | } |
343 | |
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 | |
344 | // callback called when socket is either readable or writable |
327 | // callback called when socket is either readable or writable |
345 | void |
328 | void |
346 | client::socket_cb (iow &w, int got) |
329 | client::socket_cb (iow &w, int revents) |
347 | { |
330 | { |
348 | //TODO remove when we have better socket cleanup logic |
331 | //TODO remove when we have better socket cleanup logic |
349 | if (destroyed ()) |
332 | if (destroyed ()) |
350 | { |
333 | { |
351 | socket_ev.poll (0); |
334 | socket_ev.poll (0); |
352 | return; |
335 | return; |
353 | } |
336 | } |
354 | |
337 | |
355 | if (got & PE_W) |
338 | if (revents & EV_WRITE) |
356 | { |
339 | { |
357 | write_outputbuffer (); |
340 | write_outputbuffer (); |
358 | |
341 | |
359 | if (!outputbuffer.len) |
342 | if (!outputbuffer.len) |
360 | socket_ev.poll (socket_ev.poll () & ~PE_W); |
343 | socket_ev.poll (socket_ev.poll () & ~EV_WRITE); |
361 | } |
344 | } |
362 | |
345 | |
363 | if (got & PE_R) |
346 | if (revents & EV_READ) |
364 | { |
347 | { |
365 | //TODO: rate-limit tcp connection in better ways, important |
348 | //TODO: rate-limit tcp connection in better ways, important |
366 | |
349 | |
367 | int amount = sizeof (inbuf) - inbuf_len; |
350 | int amount = sizeof (inbuf) - inbuf_len; |
368 | |
351 | |
369 | if (!amount) |
352 | if (!amount) |
370 | { |
353 | { |
371 | // input buffer full |
354 | // input buffer full |
372 | socket_ev.poll (socket_ev.poll () & ~PE_R); |
355 | LOG (llevError, "input buffer overflow."); |
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356 | destroy (); |
373 | return; |
357 | return; |
374 | } |
358 | } |
375 | |
359 | |
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360 | if (ws_version) |
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361 | { |
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362 | if (ws_inbuf_len + 2048 > ws_inbuf_alloc) |
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363 | ws_inbuf = (uint8 *)realloc (ws_inbuf, ws_inbuf_alloc += 4096); |
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364 | |
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365 | int len = read (fd, ws_inbuf + ws_inbuf_len, ws_inbuf_alloc - ws_inbuf_len); |
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366 | |
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367 | if (len > 0) |
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368 | { |
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369 | ws_inbuf_len += len; |
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370 | |
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371 | if (ws_inbuf_len < 2 + 4) // 6 is minimum length: op, len, mask |
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372 | return; |
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373 | |
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374 | int d = 2; |
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375 | int o = ws_inbuf [0] & 15; |
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376 | int l = ws_inbuf [1] & 127; |
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377 | |
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378 | if (l == 126) |
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379 | { |
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380 | l = (ws_inbuf [2] << 8) | ws_inbuf [3]; |
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381 | d += 2; |
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382 | } |
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383 | else if (l == 127) |
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384 | { |
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385 | if (ws_inbuf_len < 2 + 8) |
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386 | return; |
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387 | |
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388 | // we don't do extra long frames, if a browser wants to send >2**32 bytes, |
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389 | // there are bigger issues to fix. |
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390 | l = (ws_inbuf [6] << 24) |
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391 | | (ws_inbuf [7] << 16) |
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392 | | (ws_inbuf [8] << 8) |
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393 | | ws_inbuf [9]; |
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394 | d += 8; |
|
|
395 | } |
|
|
396 | |
|
|
397 | // we only continue if we have a complete frame |
|
|
398 | if (ws_inbuf_len < d + 4 + l) |
|
|
399 | return; |
|
|
400 | |
|
|
401 | switch (o) |
|
|
402 | { |
|
|
403 | case 0: o = ws_inbuf_type; break; // continuation |
|
|
404 | case 1: ws_inbuf_type = 1; break; // utf-8 |
|
|
405 | case 2: ws_inbuf_type = 2; break; // binary |
|
|
406 | } |
|
|
407 | |
|
|
408 | if (l > amount) |
|
|
409 | { |
|
|
410 | // input buffer full |
|
|
411 | LOG (llevError, "input buffer overflow (ws)."); |
|
|
412 | destroy (); |
|
|
413 | return; |
|
|
414 | } |
|
|
415 | |
|
|
416 | for (int i = 0; i < l; ++i) |
|
|
417 | inbuf [inbuf_len + i] = ws_inbuf [d + 4 + i] ^ ws_inbuf [d + (i & 3)]; |
|
|
418 | |
|
|
419 | // remove frame |
|
|
420 | ws_inbuf_len -= d + 4 + l; |
|
|
421 | memmove (ws_inbuf, ws_inbuf + d + 4 + l, ws_inbuf_len); |
|
|
422 | |
|
|
423 | switch (o) |
|
|
424 | { |
|
|
425 | case 1: // utf-8 |
|
|
426 | { |
|
|
427 | uint8 *a = inbuf + inbuf_len; |
|
|
428 | uint8 *b = a; |
|
|
429 | uint8 *c = a + l; |
|
|
430 | |
|
|
431 | for (; a < c; ++a, ++b) |
|
|
432 | { |
|
|
433 | *b = *a; |
|
|
434 | |
|
|
435 | if (*a >= 0x80) |
|
|
436 | *b = (a [0] & 0x1f) << 6 | (a [1] & 0x3f), ++a; |
|
|
437 | } |
|
|
438 | |
|
|
439 | l -= a - b; |
|
|
440 | } |
|
|
441 | break; |
|
|
442 | case 2: // binary |
|
|
443 | break; |
|
|
444 | |
|
|
445 | case 9: // ping |
|
|
446 | { |
|
|
447 | // send pong - we assume ping messages are <64k |
|
|
448 | // as we can't handle >10k at the moment anyway. |
|
|
449 | uint8 hdr [] = { 0x8a, 126, l >> 8, l }; |
|
|
450 | send (hdr, sizeof (hdr)); |
|
|
451 | send (inbuf + inbuf_len, l); |
|
|
452 | } |
|
|
453 | return; |
|
|
454 | |
|
|
455 | case 10: // pong |
|
|
456 | return; |
|
|
457 | |
|
|
458 | case 8: // close |
|
|
459 | default: |
|
|
460 | destroy (); |
|
|
461 | return; |
|
|
462 | } |
|
|
463 | |
|
|
464 | amount = l; |
|
|
465 | } |
|
|
466 | else |
|
|
467 | amount = -1; |
|
|
468 | } |
|
|
469 | else |
376 | amount = read (fd, inbuf + inbuf_len, amount); |
470 | amount = read (fd, inbuf + inbuf_len, amount); |
377 | |
471 | |
378 | if (!amount) |
472 | if (!amount) |
379 | { |
473 | { |
380 | destroy (); |
474 | destroy (); |
381 | return; |
475 | return; |
… | |
… | |
392 | // should not be here, normally |
486 | // should not be here, normally |
393 | } |
487 | } |
394 | else |
488 | else |
395 | { |
489 | { |
396 | inbuf_len += amount; |
490 | inbuf_len += amount; |
397 | |
491 | inbuf_handle (); |
398 | cmd_ev.start (); |
|
|
399 | } |
492 | } |
400 | } |
493 | } |
401 | } |
|
|
402 | |
|
|
403 | // called whenever we have additional commands to process |
|
|
404 | void |
|
|
405 | client::cmd_cb (iw &w) |
|
|
406 | { |
|
|
407 | if (handle_packet ()) |
|
|
408 | w.start (); |
|
|
409 | else |
|
|
410 | flush (); |
|
|
411 | } |
494 | } |
412 | |
495 | |
413 | /******************************************************************************* |
496 | /******************************************************************************* |
414 | * |
497 | * |
415 | * Start of write related routines. |
498 | * Start of write related routines. |
… | |
… | |
471 | client::send_packet (packet &sl) |
554 | client::send_packet (packet &sl) |
472 | { |
555 | { |
473 | if (destroyed ()) |
556 | if (destroyed ()) |
474 | return; |
557 | return; |
475 | |
558 | |
476 | if (sl.length () >= MAXSOCKBUF) |
559 | if (sl.length () > MAXSOCKBUF) |
477 | { |
560 | { |
478 | LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ()); |
561 | LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ()); |
479 | /* Almost certainly we've overflowed a buffer, so quit now to make |
562 | /* Almost certainly we've overflowed a buffer, so quit now to make |
480 | * it easier to debug. |
563 | * it easier to debug. |
481 | */ |
564 | */ |
… | |
… | |
483 | } |
566 | } |
484 | |
567 | |
485 | if (!sl.length ()) |
568 | if (!sl.length ()) |
486 | return; |
569 | return; |
487 | |
570 | |
|
|
571 | if (ws_version == 8) |
|
|
572 | { |
|
|
573 | static uint8 buf [MAXSOCKBUF * 2 + 4]; |
|
|
574 | |
|
|
575 | uint8 *b = buf + 4; |
|
|
576 | for (uint8 *a = sl.buf_ + sl.hdrlen; a < sl.cur; ++a) |
|
|
577 | { |
|
|
578 | if (*a < 0x80) |
|
|
579 | *b++ = *a; |
|
|
580 | else |
|
|
581 | { |
|
|
582 | *b++ = 0xc0 | ((*a >> 6) & 0x1f); |
|
|
583 | *b++ = 0x80 | ( *a & 0x3f); |
|
|
584 | } |
|
|
585 | } |
|
|
586 | |
|
|
587 | assert (b - buf < sizeof (buf)); |
|
|
588 | |
|
|
589 | int l = b - (buf + 4); |
|
|
590 | |
|
|
591 | if (l < 126) |
|
|
592 | { |
|
|
593 | buf [2] = 0x81; |
|
|
594 | buf [3] = l; |
|
|
595 | |
|
|
596 | send (buf + 2, l + 2); |
|
|
597 | } |
|
|
598 | else |
|
|
599 | { |
|
|
600 | buf [0] = 0x81; |
|
|
601 | buf [1] = 126; |
|
|
602 | buf [2] = l >> 8; |
|
|
603 | buf [3] = l; |
|
|
604 | |
|
|
605 | send (buf, l + 4); |
|
|
606 | } |
|
|
607 | } |
|
|
608 | else if (ws_version == 13) |
|
|
609 | { |
|
|
610 | int l = sl.length (); |
|
|
611 | |
|
|
612 | if (l < 126) |
|
|
613 | { |
|
|
614 | uint8 hdr [] = { 0x82, 126, l >> 8, l }; |
|
|
615 | send (hdr, sizeof (hdr)); |
|
|
616 | } |
|
|
617 | else |
|
|
618 | { |
|
|
619 | uint8 hdr [] = { 0x82, l }; |
|
|
620 | send (hdr, sizeof (hdr)); |
|
|
621 | } |
|
|
622 | |
|
|
623 | send (sl.buf_ + sl.hdrlen, l); |
|
|
624 | } |
|
|
625 | else |
|
|
626 | { |
488 | assert (sl.hdrlen == 2); |
627 | assert (sl.hdrlen == 2); |
489 | |
628 | |
490 | sl.buf_ [0] = sl.length () >> 8; |
629 | sl.buf_ [0] = sl.length () >> 8; |
491 | sl.buf_ [1] = sl.length () ; |
630 | sl.buf_ [1] = sl.length () ; |
492 | |
631 | |
493 | send (sl.buf_, sl.length () + sl.hdrlen); |
632 | send (sl.buf_, sl.length () + sl.hdrlen); |
|
|
633 | } |
494 | } |
634 | } |
495 | |
635 | |
496 | void |
636 | void |
497 | client::send_packet (const char *buf, int len) |
637 | client::send_packet (const char *buf, int len) |
498 | { |
638 | { |
… | |
… | |
520 | |
660 | |
521 | send_packet (sl); |
661 | send_packet (sl); |
522 | } |
662 | } |
523 | |
663 | |
524 | void |
664 | void |
|
|
665 | client::send_msg (int color, const char *type, const char *msg) |
|
|
666 | { |
|
|
667 | if (!msg || !type) // it can happen (for example, missing attack messages cause this) |
|
|
668 | { |
|
|
669 | LOG (logBacktrace | llevError, "send_msg(%d,%p,%p) called with NULL msg or type.\n", color, type, msg); |
|
|
670 | return; |
|
|
671 | } |
|
|
672 | |
|
|
673 | int len = strlen (msg); |
|
|
674 | |
|
|
675 | if (!(color & NDI_VERBATIM) |
|
|
676 | && (msg_is_special (msg) |
|
|
677 | || (type [0] == 'c' && type [1] == '/') || len > (MAXSOCKBUF - 128))) |
|
|
678 | cfperl_send_msg (this, color, type, msg); |
|
|
679 | else |
|
|
680 | send_packet_printf ("msg %d %s %s", color & NDI_CLIENT_MASK, type, msg); |
|
|
681 | } |
|
|
682 | |
|
|
683 | void |
525 | client::send_drawinfo (const char *msg, int flags) |
684 | client::send_drawinfo (const char *msg, int flags) |
526 | { |
685 | { |
527 | send_packet_printf ("drawinfo %d %s", flags, msg); |
686 | send_msg (flags, "log", msg); |
528 | } |
|
|
529 | |
|
|
530 | void |
|
|
531 | client::send_msg (int color, const char *type, const char *msg) |
|
|
532 | { |
|
|
533 | if (can_msg) |
|
|
534 | send_packet_printf ("msg %d %s %s", color, type, msg); |
|
|
535 | else if (color < 0) |
|
|
536 | return; // client cannot handle this |
|
|
537 | else if (strchr (msg, '<') || strchr (msg, '&')) |
|
|
538 | { |
|
|
539 | //TODO: should escape/modify to old syntax |
|
|
540 | send_packet_printf ("drawinfo %d %s", color, msg); |
|
|
541 | } |
|
|
542 | else |
|
|
543 | send_packet_printf ("drawinfo %d %s", color, msg); |
|
|
544 | } |
687 | } |
545 | |
688 | |
546 | /*********************************************************************** |
689 | /*********************************************************************** |
547 | * |
690 | * |
548 | * packet functions/utilities |
691 | * packet functions/utilities |
… | |
… | |
558 | *cur++ = ' '; |
701 | *cur++ = ' '; |
559 | } |
702 | } |
560 | |
703 | |
561 | packet &packet::operator <<(const ber32 v) |
704 | packet &packet::operator <<(const ber32 v) |
562 | { |
705 | { |
563 | enum { maxlen = 32 / 7 + 1}; |
706 | enum { maxlen = 32 / 7 + 1 }; |
564 | uint8 buf[maxlen]; |
707 | uint8 buf[maxlen]; |
565 | uint8 *p = buf + maxlen; |
708 | uint8 *p = buf + maxlen; |
566 | uint32 val = v.val; |
709 | uint32 val = v.val; |
567 | |
710 | |
568 | *--p = val & 0x7F; |
711 | *--p = val & 0x7F; |