1 | /* |
1 | /* |
2 | CrossFire, A Multiplayer game for X-windows |
2 | * This file is part of Crossfire TRT, the Roguelike Realtime MORPG. |
3 | |
3 | * |
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4 | * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team |
4 | Copyright (C) 1992 Frank Tore Johansen |
5 | * Copyright (©) 1992,2007 Frank Tore Johansen |
5 | |
6 | * |
6 | This program is free software; you can redistribute it and/or modify |
7 | * Crossfire TRT is free software: you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by |
8 | * it under the terms of the GNU General Public License as published by |
8 | the Free Software Foundation; either version 2 of the License, or |
9 | * the Free Software Foundation, either version 3 of the License, or |
9 | (at your option) any later version. |
10 | * (at your option) any later version. |
10 | |
11 | * |
11 | This program is distributed in the hope that it will be useful, |
12 | * This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | GNU General Public License for more details. |
15 | * GNU General Public License for more details. |
15 | |
16 | * |
16 | You should have received a copy of the GNU General Public License |
17 | * You should have received a copy of the GNU General Public License |
17 | along with this program; if not, write to the Free Software |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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19 | |
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20 | The author can be reached via e-mail to mark@pyramid.com |
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21 | */ |
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22 | |
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23 | /** |
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24 | * \file |
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25 | * Low-level socket-related functions. |
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26 | * |
19 | * |
27 | * \date 2003-12-02 |
20 | * The authors can be reached via e-mail to <crossfire@schmorp.de> |
28 | * |
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29 | * Contains some base functions that both the client and server |
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30 | * can use. As such, depending what we are being compiled for will |
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31 | * determine what we can include. the client is designed have |
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32 | * CFCLIENT defined as part of its compile flags. |
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33 | */ |
21 | */ |
34 | |
22 | |
35 | using namespace std; |
23 | using namespace std; |
36 | |
24 | |
37 | #include <global.h> |
25 | #include <global.h> |
38 | #include <newclient.h> |
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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 | # define TCP_HZ 1000 // sorry... |
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47 | # include <netinet/tcp.h> |
33 | # include <netinet/tcp.h> |
48 | #endif |
34 | #endif |
49 | |
35 | |
50 | // use a really low timeout, as it doesn't cost any bandwidth, and you can |
36 | // disconnect a socket after this many seconds without an ack |
51 | // easily die in 20 seconds... |
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52 | #define SOCKET_TIMEOUT1 10 |
37 | #define SOCKET_TIMEOUT 8. |
53 | #define SOCKET_TIMEOUT2 20 |
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54 | |
38 | |
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39 | // force a packet when idle for more than this many seconds, |
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40 | // forcing an ack regularly. |
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41 | #define IDLE_PING 2. |
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42 | |
55 | void |
43 | void |
56 | client_socket::flush () |
44 | client::flush () |
57 | { |
45 | { |
58 | #ifdef __linux__ |
46 | if (destroyed ()) |
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47 | return; |
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48 | |
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49 | #if HAVE_TCP_INFO |
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50 | // check about once per second, spread evenly over all clients |
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51 | // do this only when player is active |
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52 | if (!((pticks + fd) & 7) && pl && pl->active) |
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53 | { |
59 | // check time of last ack, and, if too old, kill connection |
54 | // check time of last ack, and, if too old, kill connection |
60 | struct tcp_info tcpi; |
55 | struct tcp_info tcpi; |
61 | socklen_t len = sizeof (tcpi); |
56 | socklen_t len = sizeof (tcpi); |
62 | |
57 | |
63 | if (!getsockopt (fd, IPPROTO_TCP, TCP_INFO, &tcpi, &len) && len == sizeof (tcpi)) |
58 | if (!getsockopt (fd, IPPROTO_TCP, TCP_INFO, &tcpi, &len) && len == sizeof (tcpi)) |
64 | { |
59 | { |
65 | unsigned int diff = tcpi.tcpi_last_ack_recv - tcpi.tcpi_last_data_sent; |
60 | if (tcpi.tcpi_snd_mss) |
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61 | mss = tcpi.tcpi_snd_mss; |
66 | |
62 | |
67 | if (tcpi.tcpi_unacked && SOCKET_TIMEOUT1 * TCP_HZ < diff && diff < 0x80000000UL // ack delayed for 20s |
63 | rtt = tcpi.tcpi_rtt; |
68 | && SOCKET_TIMEOUT2 * TCP_HZ < tcpi.tcpi_last_data_sent) // no data sent for 10s |
64 | rttvar = tcpi.tcpi_rttvar; |
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65 | |
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66 | if (tcpi.tcpi_last_ack_recv > int (SOCKET_TIMEOUT * 1000)) |
69 | { |
67 | { |
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68 | send_msg (NDI_RED, "connection-timeout", "safety disconnect due to tcp/ip timeout (no packets received)"); |
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69 | write_outputbuffer (); |
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70 | |
70 | LOG (llevDebug, "Connection on fd %d closed due to ack timeout (%u/%u/%u)\n", fd, |
71 | LOG (llevDebug, "connection on fd %d closed due to ack timeout (%u/%u/%u)\n", fd, |
71 | (unsigned) tcpi.tcpi_last_ack_recv, (unsigned) tcpi.tcpi_last_data_sent, (unsigned) tcpi.tcpi_unacked); |
72 | (unsigned)tcpi.tcpi_last_ack_recv, (unsigned)tcpi.tcpi_last_data_sent, (unsigned)tcpi.tcpi_unacked); |
72 | status = Ns_Dead; |
73 | destroy (); |
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74 | } |
73 | } |
75 | } |
74 | } |
76 | } |
75 | #endif |
77 | #endif |
76 | |
78 | |
77 | /** |
79 | /** |
… | |
… | |
79 | * |
81 | * |
80 | * When the socket is clear to write, and we have backlogged data, this |
82 | * When the socket is clear to write, and we have backlogged data, this |
81 | * is called to write it out. |
83 | * is called to write it out. |
82 | */ |
84 | */ |
83 | |
85 | |
84 | if (!outputbuffer.len || socket_ev.poll () & PE_W) |
86 | // write a nop to the socket at least every IDLE_NOP seconds. |
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87 | if (!outputbuffer.len) |
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88 | { |
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89 | if (last_send + IDLE_PING <= NOW && pl && pl->active) |
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90 | { |
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91 | // this is a bit ugly, but map1/map1a seem to be the only |
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92 | // nop'able commands and they are quite small. |
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93 | packet sl (mapmode == Map1Cmd ? "map1" : "map1a"); |
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94 | send_packet (sl); |
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95 | } |
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96 | else |
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97 | return; |
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98 | } |
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99 | |
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100 | if (socket_ev.poll () & PE_W) |
85 | return; |
101 | return; |
86 | |
102 | |
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103 | last_send = NOW; |
87 | write_outputbuffer (); |
104 | write_outputbuffer (); |
88 | } |
105 | } |
89 | |
106 | |
90 | void |
107 | void |
91 | client_socket::write_outputbuffer () |
108 | client::write_outputbuffer () |
92 | { |
109 | { |
93 | while (outputbuffer.len) |
110 | while (outputbuffer.len) |
94 | { |
111 | { |
95 | int res = write (fd, outputbuffer.data + outputbuffer.start, |
112 | int res = write (fd, outputbuffer.data + outputbuffer.start, |
96 | min (outputbuffer.len, SOCKETBUFSIZE - outputbuffer.start)); |
113 | min (outputbuffer.len, SOCKETBUFSIZE - outputbuffer.start)); |
… | |
… | |
101 | /* wrap back to start of buffer */ |
118 | /* wrap back to start of buffer */ |
102 | if (outputbuffer.start == SOCKETBUFSIZE) |
119 | if (outputbuffer.start == SOCKETBUFSIZE) |
103 | outputbuffer.start = 0; |
120 | outputbuffer.start = 0; |
104 | |
121 | |
105 | outputbuffer.len -= res; |
122 | outputbuffer.len -= res; |
106 | #ifdef CS_LOGSTATS |
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107 | cst_tot.obytes += res; |
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108 | cst_lst.obytes += res; |
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109 | #endif |
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110 | } |
123 | } |
111 | else if (res == 0) |
124 | else if (res == 0) |
112 | { |
125 | { |
113 | LOG (llevError, "socket write failed, connection closed.\n"); |
126 | LOG (llevError, "socket write failed, connection closed.\n"); |
114 | status = Ns_Dead; |
127 | destroy (); |
115 | return; |
128 | return; |
116 | } |
129 | } |
117 | else if (errno == EINTR) |
130 | else if (errno == EINTR) |
118 | { |
131 | { |
119 | // just retry |
132 | // just retry |
… | |
… | |
126 | return; |
139 | return; |
127 | } |
140 | } |
128 | else |
141 | else |
129 | { |
142 | { |
130 | LOG (llevError, "socket write failed: %s\n", strerror (errno)); |
143 | LOG (llevError, "socket write failed: %s\n", strerror (errno)); |
131 | status = Ns_Dead; |
144 | destroy (); |
132 | return; |
145 | return; |
133 | } |
146 | } |
134 | } |
147 | } |
135 | |
148 | |
136 | socket_ev.poll (socket_ev.poll () & ~PE_W); |
149 | socket_ev.poll (socket_ev.poll () & ~PE_W); |
137 | } |
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138 | |
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139 | /*********************************************************************** |
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140 | * |
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141 | * packet functions/utilities |
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142 | * |
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143 | **********************************************************************/ |
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144 | |
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145 | packet &packet::operator <<(const data &v) |
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146 | { |
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147 | if (room () < v.len) |
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148 | reset (); |
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149 | else |
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150 | { |
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151 | if (v.len) |
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152 | { |
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153 | memcpy (cur, v.ptr, v.len); |
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154 | cur += v.len; |
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155 | } |
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156 | } |
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157 | |
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158 | return *this; |
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159 | } |
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160 | |
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161 | packet &packet::operator <<(const data8 &v) |
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162 | { |
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163 | unsigned int len = min (v.len, 0x00FF); |
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164 | return *this << uint8 (len) << data (v.ptr, len); |
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165 | } |
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166 | |
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167 | packet &packet::operator <<(const data16 &v) |
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168 | { |
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169 | unsigned int len = min (v.len, 0xFFFF); |
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170 | return *this << uint16 (len) << data (v.ptr, len); |
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171 | } |
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172 | |
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173 | packet &packet::operator <<(const char *v) |
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174 | { |
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175 | return *this << data (v, strlen (v ? v : 0)); |
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176 | } |
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177 | |
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178 | void |
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179 | packet::printf (const char *format, ...) |
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180 | { |
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181 | int size = room (); |
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182 | |
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183 | va_list ap; |
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184 | va_start (ap, format); |
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185 | int len = vsnprintf ((char *)cur, size, format, ap); |
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186 | va_end (ap); |
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187 | |
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188 | if (len >= size) |
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189 | return reset (); |
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190 | |
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191 | cur += len; |
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192 | } |
150 | } |
193 | |
151 | |
194 | /****************************************************************************** |
152 | /****************************************************************************** |
195 | * |
153 | * |
196 | * Start of read routines. |
154 | * Start of read routines. |
197 | * |
155 | * |
198 | ******************************************************************************/ |
156 | ******************************************************************************/ |
199 | |
157 | |
200 | int |
158 | int |
201 | client_socket::read_packet () |
159 | client::next_packet () |
202 | { |
160 | { |
203 | for (;;) |
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204 | { |
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205 | if (inbuf_len >= 2) |
161 | if (inbuf_len >= 2) |
206 | { |
162 | { |
207 | unsigned int pkt_len = (inbuf [0] << 8) | inbuf [1]; |
163 | int pkt_len = (inbuf [0] << 8) | inbuf [1]; |
208 | |
164 | |
209 | if (inbuf_len >= 2 + pkt_len) |
165 | if (inbuf_len >= 2 + pkt_len) |
210 | return pkt_len + 2; |
166 | return 2 + pkt_len; |
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167 | |
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168 | if (inbuf_len == sizeof (inbuf)) |
211 | } |
169 | { |
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170 | send_packet_printf ("drawinfo %d input buffer overflow - closing connection.", NDI_RED); |
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171 | destroy (); |
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172 | return -1; |
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173 | } |
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174 | } |
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175 | |
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176 | return 0; |
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177 | } |
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178 | |
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179 | void |
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180 | client::skip_packet (int len) |
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181 | { |
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182 | inbuf_len -= len; |
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183 | memmove (inbuf, inbuf + len, inbuf_len); |
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184 | } |
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185 | |
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186 | /***************************************************************************** |
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187 | * Start of command dispatch area. |
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188 | * The commands here are protocol commands. |
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189 | ****************************************************************************/ |
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190 | |
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191 | // SocketCommand, PlayingCommand, should not exist with those ugly casts |
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192 | #define SC(cb) (void *)static_cast<void (*)(char *, int, client *)>(cb), |
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193 | #define PC(cb) (void *)static_cast<void (*)(char *, int, player *)>(cb), PF_PLAYER | |
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194 | |
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195 | /** |
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196 | * Dispatch table for the server. |
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197 | */ |
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198 | static struct packet_type packets[] = { |
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199 | {"ncom", PC(NewPlayerCmd) PF_PLAYING | PF_COMMAND6 }, |
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200 | {"command", PC(PlayerCmd) PF_PLAYING | PF_COMMAND0 }, |
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201 | |
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202 | {"examine", PC(ExamineCmd) PF_PLAYING }, |
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203 | {"ex", PC(ExCmd) PF_PLAYING }, |
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204 | {"apply", PC(ApplyCmd) PF_PLAYING }, |
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205 | {"lookat", PC(LookAt) PF_PLAYING }, |
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206 | {"lock", PC(LockItem) PF_PLAYING }, |
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207 | {"mark", PC(MarkItem) PF_PLAYING }, |
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208 | {"move", PC(MoveCmd) PF_PLAYING }, |
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209 | {"ext", PC(ExtCmd) 0 }, // CF+ |
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210 | {"mapredraw", PC(MapRedrawCmd) 0 }, |
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211 | {"mapinfo", PC(MapInfoCmd) 0 }, // CF+ |
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212 | |
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213 | {"reply", SC(ReplyCmd) 0 }, |
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214 | {"exti", SC(ExtiCmd) 0 }, // CF+ |
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215 | {"addme", SC(AddMeCmd) 0 }, |
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216 | {"askface", SC(AskFaceCmd) 0 }, |
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217 | {"requestinfo", SC(RequestInfo) 0 }, |
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218 | {"setfacemode", SC(SetFaceMode) 0 }, |
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219 | {"setsound", SC(SetSound) 0 }, |
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220 | {"setup", SC(SetUp) 0 }, |
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221 | {"version", SC(VersionCmd) 0 }, |
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222 | {"toggleextendedinfos", SC(ToggleExtendedInfos) 0 }, /*Added: tchize */ |
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223 | {"toggleextendedtext", SC(ToggleExtendedText) 0 }, /*Added: tchize */ |
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224 | {"asksmooth", SC(AskSmooth) 0 }, /*Added: tchize (smoothing technologies) */ |
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225 | }; |
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226 | |
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227 | bool |
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228 | client::may_execute (const packet_type *pkt) const |
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229 | { |
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230 | return (!(pkt->flags & PF_PLAYER) || pl) |
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231 | && (!(pkt->flags & PF_PLAYING) || state == ST_PLAYING); |
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232 | } |
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233 | |
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234 | // HACK: some commands currently should be executed |
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235 | // even when the player is frozen. this hack detects |
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236 | // those commands. it should be folded into may_execute, |
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237 | // but kept seperate to emphasise the hack aspect, i.e. |
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238 | // do it better, then remove. |
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239 | static bool |
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240 | always_immediate (const client *ns, const packet_type *pkt, const char *data, int len) |
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241 | { |
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242 | if (!(pkt->flags & (PF_COMMAND0 | PF_COMMAND6))) |
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243 | return false; |
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244 | |
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245 | if (!ns->pl || !ns->pl->ob || !ns->pl->ob->map) |
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246 | return false; |
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247 | |
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248 | if (pkt->flags & PF_COMMAND6) |
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249 | { |
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250 | data += 6; |
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251 | len -= 6; |
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252 | } |
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253 | |
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254 | if (len > 4 && !strncmp (data, "say " , 4)) |
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255 | return true; |
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256 | if (len > 5 && !strncmp (data, "chat ", 5)) |
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257 | return true; |
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258 | |
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259 | return false; |
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260 | } |
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261 | |
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262 | void |
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263 | client::execute (const packet_type *pkt, char *data, int datalen) |
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264 | { |
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265 | if (may_execute (pkt) || always_immediate (this, pkt, data, datalen)) |
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266 | { |
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267 | //TODO: only one format |
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268 | if (pkt->flags & PF_PLAYER) |
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269 | ((void (*)(char *, int, player *))pkt->cb)((char *)data, datalen, pl); |
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270 | else |
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271 | ((void (*)(char *, int, client *))pkt->cb)((char *)data, datalen, this); |
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272 | } |
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273 | else |
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274 | send_packet_printf ("drawinfo %d ERROR: you cannot execute '%s' now.", NDI_RED, pkt->name); |
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275 | } |
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276 | |
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277 | bool |
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278 | client::handle_packet () |
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279 | { |
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280 | int pkt_len = next_packet (); |
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281 | |
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282 | if (!pkt_len) |
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283 | return false; |
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284 | else if (pkt_len < 0) |
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285 | { |
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286 | LOG (llevError, "read error on player %s\n", |
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287 | pl && pl->ob ? &pl->ob->name : "[anonymous]"); |
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288 | destroy (); |
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289 | return false; |
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290 | } |
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291 | |
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292 | inbuf [pkt_len] = 0; /* Terminate buffer - useful for string data */ |
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293 | |
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294 | /* First, break out beginning word. There are at least |
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295 | * a few commands that do not have any paremeters. If |
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296 | * we get such a command, don't worry about trying |
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297 | * to break it up. |
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298 | */ |
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299 | int datalen; |
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300 | char *data = strchr ((char *)inbuf + 2, ' '); |
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301 | |
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302 | if (data) |
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303 | { |
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304 | *data++ = 0; |
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305 | datalen = pkt_len - (data - (char *)inbuf); |
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306 | } |
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307 | else |
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308 | { |
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309 | data = (char *)inbuf + 2; // better read garbage than segfault |
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310 | datalen = 0; |
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311 | } |
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312 | |
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313 | for (packet_type *pkt = packets; pkt < packets + (sizeof (packets) / sizeof (packets[0])); ++pkt) |
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314 | if (!strcmp ((char *)inbuf + 2, pkt->name)) |
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315 | { |
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316 | if (pkt->flags & PF_PLAYER && !always_immediate (this, pkt, data, datalen)) |
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317 | queue_command (pkt, data, datalen); |
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318 | else |
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319 | execute (pkt, data, datalen); |
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320 | |
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321 | goto next_packet; |
|
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322 | } |
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323 | |
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324 | // If we get here, we didn't find a valid command. |
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325 | send_packet_printf ("drawinfo %d ERROR: command '%s' not supported.", NDI_RED, (char *)inbuf + 2); |
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326 | next_packet: |
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327 | skip_packet (pkt_len); |
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328 | |
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329 | // input buffer has space again |
|
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330 | socket_ev.poll (socket_ev.poll () | PE_R); |
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331 | |
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332 | return true; |
|
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333 | } |
|
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334 | |
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335 | // callback called when socket is either readable or writable |
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336 | void |
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337 | client::socket_cb (iow &w, int got) |
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338 | { |
|
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339 | //TODO remove when we have better socket cleanup logic |
|
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340 | if (destroyed ()) |
|
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341 | { |
|
|
342 | socket_ev.poll (0); |
|
|
343 | return; |
|
|
344 | } |
|
|
345 | |
|
|
346 | if (got & PE_W) |
|
|
347 | { |
|
|
348 | write_outputbuffer (); |
|
|
349 | |
|
|
350 | if (!outputbuffer.len) |
|
|
351 | socket_ev.poll (socket_ev.poll () & ~PE_W); |
|
|
352 | } |
|
|
353 | |
|
|
354 | if (got & PE_R) |
|
|
355 | { |
|
|
356 | //TODO: rate-limit tcp connection in better ways, important |
212 | |
357 | |
213 | int amount = sizeof (inbuf) - inbuf_len; |
358 | int amount = sizeof (inbuf) - inbuf_len; |
214 | |
359 | |
215 | if (amount <= 0) |
360 | if (!amount) |
216 | { |
361 | { |
217 | LOG (llevError, "packet too large");//TODO |
362 | // input buffer full |
|
|
363 | socket_ev.poll (socket_ev.poll () & ~PE_R); |
218 | return -1; |
364 | return; |
219 | } |
365 | } |
220 | |
366 | |
221 | amount = read (fd, inbuf + inbuf_len, amount); |
367 | amount = read (fd, inbuf + inbuf_len, amount); |
222 | |
368 | |
223 | if (!amount) |
369 | if (!amount) |
224 | { |
370 | { |
225 | status = Ns_Dead; |
371 | destroy (); |
226 | return -1; |
372 | return; |
227 | } |
373 | } |
228 | else if (amount < 0) |
374 | else if (amount < 0) |
229 | { |
375 | { |
230 | if (errno != EAGAIN && errno != EINTR) |
376 | if (errno != EAGAIN && errno != EINTR) |
231 | { |
377 | { |
232 | LOG (llevError, "read error: %s\n", strerror (errno)); |
378 | LOG (llevError, "read error: %s\n", strerror (errno)); |
|
|
379 | destroy (); |
233 | return -1; |
380 | return; |
234 | } |
381 | } |
235 | |
382 | |
236 | return 0; |
383 | // should not be here, normally |
|
|
384 | } |
|
|
385 | else |
237 | } |
386 | { |
238 | |
|
|
239 | inbuf_len += amount; |
387 | inbuf_len += amount; |
240 | |
388 | |
241 | cst_tot.ibytes += amount; |
389 | cmd_ev.start (); |
242 | cst_lst.ibytes += amount; |
390 | } |
243 | } |
391 | } |
244 | } |
392 | } |
245 | |
393 | |
|
|
394 | // called whenever we have additional commands to process |
246 | void |
395 | void |
247 | client_socket::skip_packet (int len) |
396 | client::cmd_cb (iw &w) |
248 | { |
397 | { |
249 | inbuf_len -= len; |
398 | if (handle_packet ()) |
250 | memmove (inbuf, inbuf + len, inbuf_len); |
399 | w.start (); |
|
|
400 | else |
|
|
401 | flush (); |
251 | } |
402 | } |
252 | |
403 | |
253 | /******************************************************************************* |
404 | /******************************************************************************* |
254 | * |
405 | * |
255 | * Start of write related routines. |
406 | * Start of write related routines. |
… | |
… | |
261 | * |
412 | * |
262 | * ns is the socket we are adding the data to, buf is the start of the |
413 | * ns is the socket we are adding the data to, buf is the start of the |
263 | * data, and len is the number of bytes to add. |
414 | * data, and len is the number of bytes to add. |
264 | */ |
415 | */ |
265 | void |
416 | void |
266 | client_socket::send (void *buf_, int len) |
417 | client::send (void *buf_, int len) |
267 | { |
418 | { |
268 | char *buf = (char *)buf_; |
419 | char *buf = (char *)buf_; |
269 | char *pos = buf; |
|
|
270 | int amt = 0; |
|
|
271 | |
420 | |
272 | if (status == Ns_Dead || !buf) |
421 | if (destroyed () || !buf) |
273 | { |
|
|
274 | LOG (llevDebug, "Write_To_Socket called with dead socket\n"); |
|
|
275 | return; |
422 | return; |
276 | } |
|
|
277 | |
423 | |
278 | if ((len + outputbuffer.len) > SOCKETBUFSIZE) |
424 | if (len + outputbuffer.len > SOCKETBUFSIZE) |
279 | { |
425 | { |
280 | LOG (llevDebug, "Socket on fd %d has overrun internal buffer - marking as dead\n", fd); |
426 | LOG (llevDebug, "socket on fd %d has overrun internal buffer - marking as dead\n", fd); |
281 | status = Ns_Dead; |
427 | // shutdown the socket, this is safer than destroying it immediately |
|
|
428 | // as lots of code in the callchain might still access the map etc. |
|
|
429 | shutdown (fd, SHUT_RDWR); |
282 | return; |
430 | return; |
283 | } |
431 | } |
284 | |
432 | |
285 | int avail, end; |
433 | int avail, end; |
286 | |
434 | |
… | |
… | |
304 | } |
452 | } |
305 | |
453 | |
306 | outputbuffer.len += len; |
454 | outputbuffer.len += len; |
307 | } |
455 | } |
308 | |
456 | |
309 | void |
|
|
310 | client_socket::socket_cb (iow &w, int got) |
|
|
311 | { |
|
|
312 | write_outputbuffer (); |
|
|
313 | |
|
|
314 | if (!outputbuffer.len) |
|
|
315 | socket_ev.poll (socket_ev.poll () & ~PE_W); |
|
|
316 | } |
|
|
317 | |
|
|
318 | /** |
457 | /** |
319 | * Takes a string of data, and writes it out to the socket. A very handy |
458 | * Takes a string of data, and writes it out to the socket. A very handy |
320 | * shortcut function. |
459 | * shortcut function. |
321 | */ |
460 | */ |
322 | void |
461 | void |
323 | client_socket::send_packet (packet &sl) |
462 | client::send_packet (packet &sl) |
324 | { |
463 | { |
325 | if (status == Ns_Dead) |
464 | if (destroyed ()) |
326 | return; |
465 | return; |
327 | |
466 | |
328 | if (sl.length () >= MAXSOCKBUF) |
467 | if (sl.length () >= MAXSOCKBUF) |
329 | { |
468 | { |
330 | LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ()); |
469 | LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ()); |
… | |
… | |
344 | |
483 | |
345 | send (sl.buf_, sl.length () + sl.hdrlen); |
484 | send (sl.buf_, sl.length () + sl.hdrlen); |
346 | } |
485 | } |
347 | |
486 | |
348 | void |
487 | void |
349 | client_socket::send_packet (const char *buf, int len) |
488 | client::send_packet (const char *buf, int len) |
350 | { |
489 | { |
351 | packet sl; |
490 | packet sl; |
352 | |
491 | |
353 | sl << data (buf, len); |
492 | sl << data (buf, len); |
354 | send_packet (sl); |
493 | send_packet (sl); |
355 | } |
494 | } |
356 | |
495 | |
357 | void |
496 | void |
358 | client_socket::send_packet (const char *buf) |
497 | client::send_packet (const char *buf) |
359 | { |
498 | { |
360 | send_packet (buf, strlen (buf)); |
499 | send_packet (buf, strlen (buf)); |
361 | } |
500 | } |
362 | |
501 | |
|
|
502 | void |
|
|
503 | client::send_packet_printf (const char *format, ...) |
|
|
504 | { |
|
|
505 | packet sl; |
|
|
506 | |
|
|
507 | va_list ap; |
|
|
508 | va_start (ap, format); |
|
|
509 | sl.vprintf (format, ap); |
|
|
510 | va_end (ap); |
|
|
511 | |
|
|
512 | send_packet (sl); |
|
|
513 | } |
|
|
514 | |
|
|
515 | // returns true when the message needs special (read: perl) treatment |
|
|
516 | static bool |
|
|
517 | msg_is_special (const char *msg) |
|
|
518 | { |
|
|
519 | return msg [strcspn (msg, "<[&\n")]; |
|
|
520 | } |
|
|
521 | |
|
|
522 | void |
|
|
523 | client::send_msg (int color, const char *type, const char *msg) |
|
|
524 | { |
|
|
525 | if (msg_is_special (msg)) |
|
|
526 | cfperl_send_msg (this, color, type, msg); |
|
|
527 | else if (can_msg) |
|
|
528 | send_packet_printf ("msg %d %s %s", color, type, msg); |
|
|
529 | else if (color < 0) |
|
|
530 | return; // client cannot handle this |
|
|
531 | else |
|
|
532 | send_packet_printf ("drawinfo %d %s", color, msg); |
|
|
533 | } |
|
|
534 | |
|
|
535 | void |
|
|
536 | client::send_drawinfo (const char *msg, int flags) |
|
|
537 | { |
|
|
538 | send_msg (flags, "log", msg); |
|
|
539 | } |
|
|
540 | |
363 | /****************************************************************************** |
541 | /*********************************************************************** |
364 | * |
542 | * |
365 | * statistics logging functions. |
543 | * packet functions/utilities |
366 | * |
544 | * |
367 | ******************************************************************************/ |
545 | **********************************************************************/ |
368 | |
546 | |
369 | #ifdef CS_LOGSTATS |
547 | packet::packet (const char *name) |
370 | |
|
|
371 | /* cst_tot is for the life of the server, cst_last is for the last series of |
|
|
372 | * stats |
|
|
373 | */ |
|
|
374 | CS_Stats cst_tot, cst_lst; |
|
|
375 | |
|
|
376 | /** |
|
|
377 | * Writes out the gathered stats. We clear cst_lst. |
|
|
378 | */ |
|
|
379 | void |
|
|
380 | write_cs_stats (void) |
|
|
381 | { |
548 | { |
382 | time_t now = time (NULL); |
549 | reset (); |
383 | |
550 | |
384 | /* If no connections recently, don't both to log anything */ |
551 | int len = strlen (name); |
385 | if (cst_lst.ibytes == 0 && cst_lst.obytes == 0) |
552 | memcpy (cur, name, len); cur += len; |
386 | return; |
553 | *cur++ = ' '; |
387 | |
|
|
388 | /* CSSTAT is put in so scripts can easily find the line */ |
|
|
389 | LOG (llevInfo, "CSSTAT: %.16s tot %d %d %d %d inc %d %d %d %d\n", |
|
|
390 | ctime (&now), cst_tot.ibytes, cst_tot.obytes, cst_tot.max_conn, |
|
|
391 | now - cst_tot.time_start, cst_lst.ibytes, cst_lst.obytes, cst_lst.max_conn, now - cst_lst.time_start); |
|
|
392 | cst_lst.ibytes = 0; |
|
|
393 | cst_lst.obytes = 0; |
|
|
394 | cst_lst.time_start = now; |
|
|
395 | } |
554 | } |
396 | #endif |
|
|
397 | |
555 | |
|
|
556 | packet &packet::operator <<(const ber32 v) |
|
|
557 | { |
|
|
558 | enum { maxlen = 32 / 7 + 1}; |
|
|
559 | uint8 buf[maxlen]; |
|
|
560 | uint8 *p = buf + maxlen; |
|
|
561 | uint32 val = v.val; |
|
|
562 | |
|
|
563 | *--p = val & 0x7F; |
|
|
564 | |
|
|
565 | while (val > 0x7F) |
|
|
566 | { |
|
|
567 | val >>= 7; |
|
|
568 | *--p = (val & 0x7F) | 0x80; |
|
|
569 | } |
|
|
570 | |
|
|
571 | return *this << data (p, buf + maxlen - p); |
|
|
572 | } |
|
|
573 | |
|
|
574 | packet &packet::operator <<(const data &v) |
|
|
575 | { |
|
|
576 | if (room () < v.len) |
|
|
577 | reset (); |
|
|
578 | else |
|
|
579 | { |
|
|
580 | if (v.len) |
|
|
581 | { |
|
|
582 | memcpy (cur, v.ptr, v.len); |
|
|
583 | cur += v.len; |
|
|
584 | } |
|
|
585 | } |
|
|
586 | |
|
|
587 | return *this; |
|
|
588 | } |
|
|
589 | |
|
|
590 | packet &packet::operator <<(const data8 &v) |
|
|
591 | { |
|
|
592 | unsigned int len = min (v.len, 0x00FF); |
|
|
593 | return *this << uint8 (len) << data (v.ptr, len); |
|
|
594 | } |
|
|
595 | |
|
|
596 | packet &packet::operator <<(const data16 &v) |
|
|
597 | { |
|
|
598 | unsigned int len = min (v.len, 0xFFFF); |
|
|
599 | return *this << uint16 (len) << data (v.ptr, len); |
|
|
600 | } |
|
|
601 | |
|
|
602 | packet &packet::operator <<(const char *v) |
|
|
603 | { |
|
|
604 | return *this << data (v, strlen (v ? v : 0)); |
|
|
605 | } |
|
|
606 | |
|
|
607 | void |
|
|
608 | packet::vprintf (const char *format, va_list ap) |
|
|
609 | { |
|
|
610 | int size = room (); |
|
|
611 | |
|
|
612 | int len = vsnprintf ((char *)cur, size, format, ap); |
|
|
613 | |
|
|
614 | if (len >= size) |
|
|
615 | return reset (); |
|
|
616 | |
|
|
617 | cur += len; |
|
|
618 | } |
|
|
619 | |