1 |
elmex |
1.1 |
/* |
2 |
root |
1.42 |
* This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game. |
3 |
pippijn |
1.32 |
* |
4 |
root |
1.42 |
* Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team |
5 |
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* Copyright (©) 1992,2007 Frank Tore Johansen |
6 |
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* |
7 |
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* Crossfire TRT is free software; you can redistribute it and/or modify it |
8 |
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* under the terms of the GNU General Public License as published by the Free |
9 |
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* Software Foundation; either version 2 of the License, or (at your option) |
10 |
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* any later version. |
11 |
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* |
12 |
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* This program is distributed in the hope that it will be useful, but |
13 |
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
14 |
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
15 |
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* for more details. |
16 |
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* |
17 |
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* You should have received a copy of the GNU General Public License along |
18 |
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* with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51 |
19 |
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* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
20 |
pippijn |
1.32 |
* |
21 |
root |
1.42 |
* The authors can be reached via e-mail to <crossfire@schmorp.de> |
22 |
pippijn |
1.32 |
*/ |
23 |
root |
1.42 |
|
24 |
elmex |
1.1 |
/** |
25 |
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* \file |
26 |
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* Low-level socket-related functions. |
27 |
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* |
28 |
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* \date 2003-12-02 |
29 |
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* |
30 |
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* Contains some base functions that both the client and server |
31 |
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* can use. As such, depending what we are being compiled for will |
32 |
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* determine what we can include. the client is designed have |
33 |
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* CFCLIENT defined as part of its compile flags. |
34 |
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*/ |
35 |
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36 |
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using namespace std; |
37 |
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38 |
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#include <global.h> |
39 |
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#include <sproto.h> |
40 |
root |
1.11 |
#include <cstdarg> |
41 |
elmex |
1.1 |
|
42 |
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#ifdef __linux__ |
43 |
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# include <sys/types.h> |
44 |
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# include <sys/socket.h> |
45 |
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# include <netinet/in.h> |
46 |
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# include <netinet/tcp.h> |
47 |
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#endif |
48 |
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|
49 |
root |
1.43 |
// disconnect a socket after this many seconds without an ack |
50 |
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#define SOCKET_TIMEOUT 8. |
51 |
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|
52 |
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// force a packet when idle for more than this many seconds, |
53 |
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// forcing an ack regularly. |
54 |
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#define IDLE_PING 2. |
55 |
elmex |
1.1 |
|
56 |
root |
1.5 |
void |
57 |
root |
1.22 |
client::flush () |
58 |
elmex |
1.1 |
{ |
59 |
root |
1.29 |
if (destroyed ()) |
60 |
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return; |
61 |
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|
62 |
root |
1.44 |
#ifdef __linux__ //TODO: this is available on bsds, too, use a configure test. |
63 |
root |
1.43 |
// check about once per second, spread evenly over all clients |
64 |
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if (!((pticks + fd) & 7)) |
65 |
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{ |
66 |
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// check time of last ack, and, if too old, kill connection |
67 |
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struct tcp_info tcpi; |
68 |
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socklen_t len = sizeof (tcpi); |
69 |
elmex |
1.1 |
|
70 |
root |
1.43 |
if (!getsockopt (fd, IPPROTO_TCP, TCP_INFO, &tcpi, &len) && len == sizeof (tcpi)) |
71 |
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{ |
72 |
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rtt = tcpi.tcpi_rtt; |
73 |
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rttvar = tcpi.tcpi_rttvar; |
74 |
elmex |
1.1 |
|
75 |
root |
1.43 |
if (tcpi.tcpi_last_ack_recv > int (SOCKET_TIMEOUT * 1000)) |
76 |
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{ |
77 |
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send_msg (NDI_RED, "connection-timeout", "safety disconnect due to tcp/ip timeout (no packets received)"); |
78 |
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write_outputbuffer (); |
79 |
root |
1.21 |
|
80 |
root |
1.43 |
LOG (llevDebug, "connection on fd %d closed due to ack timeout (%u/%u/%u)\n", fd, |
81 |
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(unsigned)tcpi.tcpi_last_ack_recv, (unsigned)tcpi.tcpi_last_data_sent, (unsigned)tcpi.tcpi_unacked); |
82 |
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destroy (); |
83 |
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} |
84 |
elmex |
1.1 |
} |
85 |
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} |
86 |
root |
1.20 |
#endif |
87 |
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|
88 |
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/** |
89 |
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* Writes data to socket. |
90 |
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* |
91 |
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* When the socket is clear to write, and we have backlogged data, this |
92 |
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* is called to write it out. |
93 |
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*/ |
94 |
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|
95 |
root |
1.43 |
// write a nop to the socket at least every IDLE_NOP seconds. |
96 |
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if (!outputbuffer.len) |
97 |
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{ |
98 |
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if (last_send + IDLE_PING <= NOW) |
99 |
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{ |
100 |
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// this is a bit ugly, but map1/map1a seem to be the only |
101 |
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// nop'able commands and they are quite small. |
102 |
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packet sl (mapmode == Map1Cmd ? "map1" : "map1a"); |
103 |
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send_packet (sl); |
104 |
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} |
105 |
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else |
106 |
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return; |
107 |
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} |
108 |
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|
109 |
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if (socket_ev.poll () & PE_W) |
110 |
root |
1.20 |
return; |
111 |
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|
112 |
root |
1.43 |
last_send = NOW; |
113 |
root |
1.20 |
write_outputbuffer (); |
114 |
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} |
115 |
elmex |
1.1 |
|
116 |
root |
1.20 |
void |
117 |
root |
1.22 |
client::write_outputbuffer () |
118 |
root |
1.20 |
{ |
119 |
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while (outputbuffer.len) |
120 |
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{ |
121 |
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int res = write (fd, outputbuffer.data + outputbuffer.start, |
122 |
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min (outputbuffer.len, SOCKETBUFSIZE - outputbuffer.start)); |
123 |
root |
1.5 |
|
124 |
root |
1.20 |
if (res > 0) |
125 |
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{ |
126 |
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outputbuffer.start += res; |
127 |
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/* wrap back to start of buffer */ |
128 |
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if (outputbuffer.start == SOCKETBUFSIZE) |
129 |
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outputbuffer.start = 0; |
130 |
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131 |
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outputbuffer.len -= res; |
132 |
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} |
133 |
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else if (res == 0) |
134 |
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{ |
135 |
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LOG (llevError, "socket write failed, connection closed.\n"); |
136 |
root |
1.23 |
destroy (); |
137 |
root |
1.20 |
return; |
138 |
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} |
139 |
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else if (errno == EINTR) |
140 |
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{ |
141 |
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// just retry |
142 |
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} |
143 |
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else if (errno == EAGAIN) |
144 |
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{ |
145 |
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// delay till ready |
146 |
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socket_ev.poll (socket_ev.poll () | PE_W); |
147 |
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socket_ev.start (); |
148 |
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return; |
149 |
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} |
150 |
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else |
151 |
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{ |
152 |
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LOG (llevError, "socket write failed: %s\n", strerror (errno)); |
153 |
root |
1.23 |
destroy (); |
154 |
root |
1.20 |
return; |
155 |
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} |
156 |
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} |
157 |
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|
158 |
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socket_ev.poll (socket_ev.poll () & ~PE_W); |
159 |
elmex |
1.1 |
} |
160 |
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|
161 |
root |
1.23 |
/****************************************************************************** |
162 |
elmex |
1.1 |
* |
163 |
root |
1.23 |
* Start of read routines. |
164 |
elmex |
1.1 |
* |
165 |
root |
1.23 |
******************************************************************************/ |
166 |
elmex |
1.1 |
|
167 |
root |
1.23 |
int |
168 |
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client::next_packet () |
169 |
elmex |
1.1 |
{ |
170 |
root |
1.23 |
if (inbuf_len >= 2) |
171 |
root |
1.11 |
{ |
172 |
root |
1.23 |
int pkt_len = (inbuf [0] << 8) | inbuf [1]; |
173 |
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|
174 |
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if (inbuf_len >= 2 + pkt_len) |
175 |
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return 2 + pkt_len; |
176 |
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|
177 |
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if (inbuf_len == sizeof (inbuf)) |
178 |
root |
1.15 |
{ |
179 |
root |
1.23 |
send_packet_printf ("drawinfo %d input buffer overflow - closing connection.", NDI_RED); |
180 |
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destroy (); |
181 |
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return -1; |
182 |
root |
1.15 |
} |
183 |
root |
1.11 |
} |
184 |
root |
1.9 |
|
185 |
root |
1.23 |
return 0; |
186 |
root |
1.11 |
} |
187 |
root |
1.9 |
|
188 |
root |
1.23 |
void |
189 |
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client::skip_packet (int len) |
190 |
root |
1.11 |
{ |
191 |
root |
1.23 |
inbuf_len -= len; |
192 |
|
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memmove (inbuf, inbuf + len, inbuf_len); |
193 |
elmex |
1.1 |
} |
194 |
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|
195 |
root |
1.23 |
/***************************************************************************** |
196 |
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* Start of command dispatch area. |
197 |
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* The commands here are protocol commands. |
198 |
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****************************************************************************/ |
199 |
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|
200 |
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// SocketCommand, PlayingCommand, should not exist with those ugly casts |
201 |
|
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#define SC(cb) (void *)static_cast<void (*)(char *, int, client *)>(cb), |
202 |
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#define PC(cb) (void *)static_cast<void (*)(char *, int, player *)>(cb), PF_PLAYER | |
203 |
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204 |
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/** |
205 |
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* Dispatch table for the server. |
206 |
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*/ |
207 |
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static struct packet_type packets[] = { |
208 |
root |
1.33 |
{"ncom", PC(NewPlayerCmd) PF_PLAYING | PF_COMMAND6 }, |
209 |
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{"command", PC(PlayerCmd) PF_PLAYING | PF_COMMAND0 }, |
210 |
root |
1.23 |
|
211 |
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{"examine", PC(ExamineCmd) PF_PLAYING }, |
212 |
root |
1.39 |
{"ex", PC(ExCmd) PF_PLAYING }, |
213 |
root |
1.23 |
{"apply", PC(ApplyCmd) PF_PLAYING }, |
214 |
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{"lookat", PC(LookAt) PF_PLAYING }, |
215 |
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{"lock", PC(LockItem) PF_PLAYING }, |
216 |
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{"mark", PC(MarkItem) PF_PLAYING }, |
217 |
|
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{"move", PC(MoveCmd) PF_PLAYING }, |
218 |
root |
1.39 |
{"ext", PC(ExtCmd) 0 }, // CF+ |
219 |
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{"mapredraw", PC(MapRedrawCmd) 0 }, |
220 |
|
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{"mapinfo", PC(MapInfoCmd) 0 }, // CF+ |
221 |
root |
1.23 |
|
222 |
root |
1.28 |
{"reply", SC(ReplyCmd) 0 }, |
223 |
root |
1.39 |
{"exti", SC(ExtiCmd) 0 }, // CF+ |
224 |
root |
1.26 |
{"addme", SC(AddMeCmd) 0 }, |
225 |
root |
1.36 |
{"askface", SC(AskFaceCmd) 0 }, |
226 |
root |
1.26 |
{"requestinfo", SC(RequestInfo) 0 }, |
227 |
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{"setfacemode", SC(SetFaceMode) 0 }, |
228 |
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{"setsound", SC(SetSound) 0 }, |
229 |
|
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{"setup", SC(SetUp) 0 }, |
230 |
|
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{"version", SC(VersionCmd) 0 }, |
231 |
|
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{"toggleextendedinfos", SC(ToggleExtendedInfos) 0 }, /*Added: tchize */ |
232 |
|
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{"toggleextendedtext", SC(ToggleExtendedText) 0 }, /*Added: tchize */ |
233 |
|
|
{"asksmooth", SC(AskSmooth) 0 }, /*Added: tchize (smoothing technologies) */ |
234 |
root |
1.23 |
}; |
235 |
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|
236 |
|
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bool |
237 |
|
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client::may_execute (const packet_type *pkt) const |
238 |
elmex |
1.1 |
{ |
239 |
root |
1.23 |
return (!(pkt->flags & PF_PLAYER) || pl) |
240 |
root |
1.29 |
&& (!(pkt->flags & PF_PLAYING) || state == ST_PLAYING); |
241 |
root |
1.11 |
} |
242 |
root |
1.9 |
|
243 |
root |
1.33 |
// HACK: some commands currently should be executed |
244 |
|
|
// even when the player is frozen. this hack detects |
245 |
|
|
// those commands. it should be folded into may_execute, |
246 |
|
|
// but kept seperate to emphasise the hack aspect, i.e. |
247 |
|
|
// do it better, then remove. |
248 |
|
|
static bool |
249 |
|
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always_immediate (const client *ns, const packet_type *pkt, const char *data, int len) |
250 |
|
|
{ |
251 |
|
|
if (!(pkt->flags & (PF_COMMAND0 | PF_COMMAND6))) |
252 |
|
|
return false; |
253 |
|
|
|
254 |
|
|
if (!ns->pl || !ns->pl->ob || !ns->pl->ob->map) |
255 |
|
|
return false; |
256 |
|
|
|
257 |
|
|
if (pkt->flags & PF_COMMAND6) |
258 |
|
|
{ |
259 |
|
|
data += 6; |
260 |
|
|
len -= 6; |
261 |
|
|
} |
262 |
|
|
|
263 |
|
|
if (len > 4 && !strncmp (data, "say " , 4)) |
264 |
|
|
return true; |
265 |
|
|
if (len > 5 && !strncmp (data, "chat ", 5)) |
266 |
|
|
return true; |
267 |
|
|
|
268 |
|
|
return false; |
269 |
|
|
} |
270 |
|
|
|
271 |
root |
1.23 |
void |
272 |
|
|
client::execute (const packet_type *pkt, char *data, int datalen) |
273 |
root |
1.11 |
{ |
274 |
root |
1.33 |
if (may_execute (pkt) || always_immediate (this, pkt, data, datalen)) |
275 |
root |
1.23 |
{ |
276 |
|
|
//TODO: only one format |
277 |
|
|
if (pkt->flags & PF_PLAYER) |
278 |
|
|
((void (*)(char *, int, player *))pkt->cb)((char *)data, datalen, pl); |
279 |
|
|
else |
280 |
|
|
((void (*)(char *, int, client *))pkt->cb)((char *)data, datalen, this); |
281 |
|
|
} |
282 |
|
|
else |
283 |
|
|
send_packet_printf ("drawinfo %d ERROR: you cannot execute '%s' now.", NDI_RED, pkt->name); |
284 |
elmex |
1.1 |
} |
285 |
|
|
|
286 |
root |
1.23 |
bool |
287 |
|
|
client::handle_packet () |
288 |
root |
1.10 |
{ |
289 |
root |
1.23 |
int pkt_len = next_packet (); |
290 |
|
|
|
291 |
|
|
if (!pkt_len) |
292 |
|
|
return false; |
293 |
|
|
else if (pkt_len < 0) |
294 |
|
|
{ |
295 |
|
|
LOG (llevError, "read error on player %s\n", |
296 |
|
|
pl && pl->ob ? &pl->ob->name : "[anonymous]"); |
297 |
|
|
destroy (); |
298 |
|
|
return false; |
299 |
|
|
} |
300 |
|
|
|
301 |
|
|
inbuf [pkt_len] = 0; /* Terminate buffer - useful for string data */ |
302 |
|
|
|
303 |
|
|
/* First, break out beginning word. There are at least |
304 |
|
|
* a few commands that do not have any paremeters. If |
305 |
|
|
* we get such a command, don't worry about trying |
306 |
|
|
* to break it up. |
307 |
|
|
*/ |
308 |
|
|
int datalen; |
309 |
|
|
char *data = strchr ((char *)inbuf + 2, ' '); |
310 |
|
|
|
311 |
|
|
if (data) |
312 |
|
|
{ |
313 |
|
|
*data++ = 0; |
314 |
|
|
datalen = pkt_len - (data - (char *)inbuf); |
315 |
|
|
} |
316 |
|
|
else |
317 |
|
|
{ |
318 |
|
|
data = (char *)inbuf + 2; // better read garbage than segfault |
319 |
|
|
datalen = 0; |
320 |
|
|
} |
321 |
root |
1.15 |
|
322 |
root |
1.23 |
for (packet_type *pkt = packets; pkt < packets + (sizeof (packets) / sizeof (packets[0])); ++pkt) |
323 |
|
|
if (!strcmp ((char *)inbuf + 2, pkt->name)) |
324 |
|
|
{ |
325 |
root |
1.33 |
if (pkt->flags & PF_PLAYER && !always_immediate (this, pkt, data, datalen)) |
326 |
root |
1.26 |
queue_command (pkt, data, datalen); |
327 |
|
|
else |
328 |
root |
1.23 |
execute (pkt, data, datalen); |
329 |
|
|
|
330 |
|
|
goto next_packet; |
331 |
|
|
} |
332 |
|
|
|
333 |
root |
1.26 |
// If we get here, we didn't find a valid command. |
334 |
root |
1.23 |
send_packet_printf ("drawinfo %d ERROR: command '%s' not supported.", NDI_RED, (char *)inbuf + 2); |
335 |
|
|
next_packet: |
336 |
|
|
skip_packet (pkt_len); |
337 |
root |
1.11 |
|
338 |
root |
1.23 |
// input buffer has space again |
339 |
|
|
socket_ev.poll (socket_ev.poll () | PE_R); |
340 |
root |
1.10 |
|
341 |
root |
1.23 |
return true; |
342 |
root |
1.10 |
} |
343 |
|
|
|
344 |
root |
1.23 |
// callback called when socket is either readable or writable |
345 |
|
|
void |
346 |
|
|
client::socket_cb (iow &w, int got) |
347 |
|
|
{ |
348 |
|
|
//TODO remove when we have better socket cleanup logic |
349 |
root |
1.29 |
if (destroyed ()) |
350 |
root |
1.23 |
{ |
351 |
|
|
socket_ev.poll (0); |
352 |
|
|
return; |
353 |
|
|
} |
354 |
elmex |
1.1 |
|
355 |
root |
1.23 |
if (got & PE_W) |
356 |
root |
1.5 |
{ |
357 |
root |
1.23 |
write_outputbuffer (); |
358 |
|
|
|
359 |
|
|
if (!outputbuffer.len) |
360 |
|
|
socket_ev.poll (socket_ev.poll () & ~PE_W); |
361 |
|
|
} |
362 |
root |
1.12 |
|
363 |
root |
1.23 |
if (got & PE_R) |
364 |
|
|
{ |
365 |
|
|
//TODO: rate-limit tcp connection in better ways, important |
366 |
pippijn |
1.8 |
|
367 |
root |
1.12 |
int amount = sizeof (inbuf) - inbuf_len; |
368 |
|
|
|
369 |
root |
1.23 |
if (!amount) |
370 |
root |
1.5 |
{ |
371 |
root |
1.23 |
// input buffer full |
372 |
|
|
socket_ev.poll (socket_ev.poll () & ~PE_R); |
373 |
|
|
return; |
374 |
root |
1.3 |
} |
375 |
elmex |
1.1 |
|
376 |
root |
1.12 |
amount = read (fd, inbuf + inbuf_len, amount); |
377 |
|
|
|
378 |
|
|
if (!amount) |
379 |
root |
1.5 |
{ |
380 |
root |
1.23 |
destroy (); |
381 |
|
|
return; |
382 |
root |
1.5 |
} |
383 |
root |
1.12 |
else if (amount < 0) |
384 |
root |
1.5 |
{ |
385 |
root |
1.12 |
if (errno != EAGAIN && errno != EINTR) |
386 |
root |
1.5 |
{ |
387 |
root |
1.20 |
LOG (llevError, "read error: %s\n", strerror (errno)); |
388 |
root |
1.23 |
destroy (); |
389 |
|
|
return; |
390 |
root |
1.3 |
} |
391 |
root |
1.12 |
|
392 |
root |
1.23 |
// should not be here, normally |
393 |
root |
1.3 |
} |
394 |
root |
1.23 |
else |
395 |
|
|
{ |
396 |
|
|
inbuf_len += amount; |
397 |
root |
1.12 |
|
398 |
root |
1.23 |
cmd_ev.start (); |
399 |
|
|
} |
400 |
root |
1.5 |
} |
401 |
root |
1.12 |
} |
402 |
|
|
|
403 |
root |
1.23 |
// called whenever we have additional commands to process |
404 |
root |
1.12 |
void |
405 |
root |
1.23 |
client::cmd_cb (iw &w) |
406 |
root |
1.12 |
{ |
407 |
root |
1.26 |
if (handle_packet ()) |
408 |
root |
1.23 |
w.start (); |
409 |
|
|
else |
410 |
|
|
flush (); |
411 |
elmex |
1.1 |
} |
412 |
|
|
|
413 |
|
|
/******************************************************************************* |
414 |
|
|
* |
415 |
|
|
* Start of write related routines. |
416 |
|
|
* |
417 |
|
|
******************************************************************************/ |
418 |
|
|
|
419 |
|
|
/** |
420 |
|
|
* Adds data to a socket buffer for whatever reason. |
421 |
|
|
* |
422 |
|
|
* ns is the socket we are adding the data to, buf is the start of the |
423 |
|
|
* data, and len is the number of bytes to add. |
424 |
|
|
*/ |
425 |
root |
1.20 |
void |
426 |
root |
1.22 |
client::send (void *buf_, int len) |
427 |
root |
1.20 |
{ |
428 |
|
|
char *buf = (char *)buf_; |
429 |
elmex |
1.1 |
|
430 |
root |
1.29 |
if (destroyed () || !buf) |
431 |
root |
1.23 |
return; |
432 |
elmex |
1.1 |
|
433 |
root |
1.31 |
if (len + outputbuffer.len > SOCKETBUFSIZE) |
434 |
root |
1.5 |
{ |
435 |
root |
1.23 |
LOG (llevDebug, "socket on fd %d has overrun internal buffer - marking as dead\n", fd); |
436 |
root |
1.36 |
// shutdown the socket, this is safer than destroying it immediately |
437 |
|
|
// as lots of code in the callchain might still access the map etc. |
438 |
|
|
shutdown (fd, SHUT_RDWR); |
439 |
root |
1.5 |
return; |
440 |
|
|
} |
441 |
|
|
|
442 |
root |
1.20 |
int avail, end; |
443 |
|
|
|
444 |
root |
1.5 |
/* data + end is where we start putting the new data. The last byte |
445 |
|
|
* currently in use is actually data + end -1 |
446 |
|
|
*/ |
447 |
root |
1.20 |
end = outputbuffer.start + outputbuffer.len; |
448 |
root |
1.5 |
/* The buffer is already in a wrapped state, so adjust end */ |
449 |
|
|
if (end >= SOCKETBUFSIZE) |
450 |
|
|
end -= SOCKETBUFSIZE; |
451 |
root |
1.7 |
|
452 |
root |
1.5 |
avail = SOCKETBUFSIZE - end; |
453 |
elmex |
1.1 |
|
454 |
root |
1.5 |
/* We can all fit it behind the current data without wrapping */ |
455 |
|
|
if (avail >= len) |
456 |
root |
1.20 |
memcpy (outputbuffer.data + end, buf, len); |
457 |
root |
1.5 |
else |
458 |
|
|
{ |
459 |
root |
1.20 |
memcpy (outputbuffer.data + end, buf, avail); |
460 |
|
|
memcpy (outputbuffer.data, buf + avail, len - avail); |
461 |
elmex |
1.1 |
} |
462 |
root |
1.7 |
|
463 |
root |
1.20 |
outputbuffer.len += len; |
464 |
elmex |
1.1 |
} |
465 |
|
|
|
466 |
|
|
/** |
467 |
|
|
* Takes a string of data, and writes it out to the socket. A very handy |
468 |
|
|
* shortcut function. |
469 |
|
|
*/ |
470 |
root |
1.13 |
void |
471 |
root |
1.22 |
client::send_packet (packet &sl) |
472 |
root |
1.13 |
{ |
473 |
root |
1.29 |
if (destroyed ()) |
474 |
root |
1.19 |
return; |
475 |
|
|
|
476 |
|
|
if (sl.length () >= MAXSOCKBUF) |
477 |
|
|
{ |
478 |
|
|
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 |
480 |
|
|
* it easier to debug. |
481 |
|
|
*/ |
482 |
|
|
abort (); |
483 |
|
|
} |
484 |
|
|
|
485 |
|
|
if (!sl.length ()) |
486 |
|
|
return; |
487 |
|
|
|
488 |
|
|
assert (sl.hdrlen == 2); |
489 |
|
|
|
490 |
|
|
sl.buf_ [0] = sl.length () >> 8; |
491 |
|
|
sl.buf_ [1] = sl.length () ; |
492 |
|
|
|
493 |
|
|
send (sl.buf_, sl.length () + sl.hdrlen); |
494 |
root |
1.13 |
} |
495 |
|
|
|
496 |
root |
1.5 |
void |
497 |
root |
1.22 |
client::send_packet (const char *buf, int len) |
498 |
elmex |
1.1 |
{ |
499 |
root |
1.14 |
packet sl; |
500 |
elmex |
1.1 |
|
501 |
root |
1.13 |
sl << data (buf, len); |
502 |
|
|
send_packet (sl); |
503 |
elmex |
1.1 |
} |
504 |
|
|
|
505 |
root |
1.13 |
void |
506 |
root |
1.22 |
client::send_packet (const char *buf) |
507 |
root |
1.13 |
{ |
508 |
|
|
send_packet (buf, strlen (buf)); |
509 |
|
|
} |
510 |
elmex |
1.1 |
|
511 |
root |
1.23 |
void |
512 |
|
|
client::send_packet_printf (const char *format, ...) |
513 |
|
|
{ |
514 |
|
|
packet sl; |
515 |
|
|
|
516 |
|
|
va_list ap; |
517 |
|
|
va_start (ap, format); |
518 |
|
|
sl.vprintf (format, ap); |
519 |
|
|
va_end (ap); |
520 |
|
|
|
521 |
|
|
send_packet (sl); |
522 |
|
|
} |
523 |
|
|
|
524 |
root |
1.35 |
void |
525 |
|
|
client::send_drawinfo (const char *msg, int flags) |
526 |
|
|
{ |
527 |
|
|
send_packet_printf ("drawinfo %d %s", flags, msg); |
528 |
|
|
} |
529 |
|
|
|
530 |
root |
1.40 |
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 |
|
|
} |
545 |
|
|
|
546 |
root |
1.23 |
/*********************************************************************** |
547 |
|
|
* |
548 |
|
|
* packet functions/utilities |
549 |
|
|
* |
550 |
|
|
**********************************************************************/ |
551 |
|
|
|
552 |
root |
1.27 |
packet::packet (const char *name) |
553 |
|
|
{ |
554 |
|
|
reset (); |
555 |
|
|
|
556 |
|
|
int len = strlen (name); |
557 |
|
|
memcpy (cur, name, len); cur += len; |
558 |
|
|
*cur++ = ' '; |
559 |
|
|
} |
560 |
|
|
|
561 |
root |
1.37 |
packet &packet::operator <<(const ber32 v) |
562 |
|
|
{ |
563 |
|
|
enum { maxlen = 32 / 7 + 1}; |
564 |
|
|
uint8 buf[maxlen]; |
565 |
|
|
uint8 *p = buf + maxlen; |
566 |
|
|
uint32 val = v.val; |
567 |
|
|
|
568 |
root |
1.38 |
*--p = val & 0x7F; |
569 |
|
|
|
570 |
root |
1.37 |
while (val > 0x7F) |
571 |
|
|
{ |
572 |
root |
1.38 |
val >>= 7; |
573 |
root |
1.37 |
*--p = (val & 0x7F) | 0x80; |
574 |
|
|
} |
575 |
|
|
|
576 |
|
|
return *this << data (p, buf + maxlen - p); |
577 |
|
|
} |
578 |
|
|
|
579 |
root |
1.23 |
packet &packet::operator <<(const data &v) |
580 |
|
|
{ |
581 |
|
|
if (room () < v.len) |
582 |
|
|
reset (); |
583 |
|
|
else |
584 |
|
|
{ |
585 |
|
|
if (v.len) |
586 |
|
|
{ |
587 |
|
|
memcpy (cur, v.ptr, v.len); |
588 |
|
|
cur += v.len; |
589 |
|
|
} |
590 |
|
|
} |
591 |
|
|
|
592 |
|
|
return *this; |
593 |
|
|
} |
594 |
|
|
|
595 |
|
|
packet &packet::operator <<(const data8 &v) |
596 |
|
|
{ |
597 |
|
|
unsigned int len = min (v.len, 0x00FF); |
598 |
|
|
return *this << uint8 (len) << data (v.ptr, len); |
599 |
|
|
} |
600 |
|
|
|
601 |
|
|
packet &packet::operator <<(const data16 &v) |
602 |
|
|
{ |
603 |
|
|
unsigned int len = min (v.len, 0xFFFF); |
604 |
|
|
return *this << uint16 (len) << data (v.ptr, len); |
605 |
|
|
} |
606 |
|
|
|
607 |
|
|
packet &packet::operator <<(const char *v) |
608 |
|
|
{ |
609 |
|
|
return *this << data (v, strlen (v ? v : 0)); |
610 |
|
|
} |
611 |
|
|
|
612 |
|
|
void |
613 |
|
|
packet::vprintf (const char *format, va_list ap) |
614 |
|
|
{ |
615 |
|
|
int size = room (); |
616 |
|
|
|
617 |
|
|
int len = vsnprintf ((char *)cur, size, format, ap); |
618 |
|
|
|
619 |
|
|
if (len >= size) |
620 |
|
|
return reset (); |
621 |
|
|
|
622 |
|
|
cur += len; |
623 |
|
|
} |
624 |
|
|
|