1 | /* |
1 | /* |
2 | CrossFire, A Multiplayer game for X-windows |
2 | * CrossFire, A Multiplayer game for X-windows |
3 | |
3 | * |
|
|
4 | * Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team |
4 | Copyright (C) 1992 Frank Tore Johansen |
5 | * Copyright (C) 1992 Frank Tore Johansen |
5 | |
6 | * |
6 | This program is free software; you can redistribute it and/or modify |
7 | * This program 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 2 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, write to the Free Software |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
19 | |
20 | * |
20 | The author can be reached via e-mail to mark@pyramid.com |
21 | * The author can be reached via e-mail to mark@pyramid.com |
21 | */ |
22 | */ |
22 | |
23 | |
23 | /** |
24 | /** |
24 | * \file |
25 | * \file |
25 | * Low-level socket-related functions. |
26 | * Low-level socket-related functions. |
26 | * |
27 | * |
27 | * \date 2003-12-02 |
28 | * \date 2003-12-02 |
… | |
… | |
40 | |
41 | |
41 | #ifdef __linux__ |
42 | #ifdef __linux__ |
42 | # include <sys/types.h> |
43 | # include <sys/types.h> |
43 | # include <sys/socket.h> |
44 | # include <sys/socket.h> |
44 | # include <netinet/in.h> |
45 | # include <netinet/in.h> |
45 | # define TCP_HZ 1000 // sorry... |
|
|
46 | # include <netinet/tcp.h> |
46 | # include <netinet/tcp.h> |
47 | #endif |
47 | #endif |
48 | |
48 | |
49 | // use a really low timeout, as it doesn't cost any bandwidth, and you can |
49 | // use a really low timeout, as it doesn't cost any bandwidth, and you can |
50 | // easily die in 20 seconds... |
50 | // easily die in 20 seconds... |
51 | #define SOCKET_TIMEOUT1 10 |
51 | #define SOCKET_TIMEOUT1 10 * 1000 |
52 | #define SOCKET_TIMEOUT2 20 |
52 | #define SOCKET_TIMEOUT2 20 * 1000 |
53 | |
53 | |
54 | void |
54 | void |
55 | client::flush () |
55 | client::flush () |
56 | { |
56 | { |
|
|
57 | if (destroyed ()) |
|
|
58 | return; |
|
|
59 | |
57 | #ifdef __linux__ |
60 | #ifdef __linux__ |
58 | // check time of last ack, and, if too old, kill connection |
61 | // check time of last ack, and, if too old, kill connection |
59 | struct tcp_info tcpi; |
62 | struct tcp_info tcpi; |
60 | socklen_t len = sizeof (tcpi); |
63 | socklen_t len = sizeof (tcpi); |
61 | |
64 | |
… | |
… | |
64 | unsigned int diff = tcpi.tcpi_last_ack_recv - tcpi.tcpi_last_data_sent; |
67 | unsigned int diff = tcpi.tcpi_last_ack_recv - tcpi.tcpi_last_data_sent; |
65 | |
68 | |
66 | rtt = tcpi.tcpi_rtt; |
69 | rtt = tcpi.tcpi_rtt; |
67 | rttvar = tcpi.tcpi_rttvar; |
70 | rttvar = tcpi.tcpi_rttvar; |
68 | |
71 | |
69 | if (tcpi.tcpi_unacked && SOCKET_TIMEOUT1 * TCP_HZ < diff && diff < 0x80000000UL // ack delayed for 20s |
72 | if (tcpi.tcpi_unacked && SOCKET_TIMEOUT1 < diff && diff < 0x80000000UL // ack delayed for 20s |
70 | && SOCKET_TIMEOUT2 * TCP_HZ < tcpi.tcpi_last_data_sent) // no data sent for 10s |
73 | && SOCKET_TIMEOUT2 < tcpi.tcpi_last_data_sent) // no data sent for 10s |
71 | { |
74 | { |
72 | LOG (llevDebug, "Connection on fd %d closed due to ack timeout (%u/%u/%u)\n", fd, |
75 | LOG (llevDebug, "Connection on fd %d closed due to ack timeout (%u/%u/%u)\n", fd, |
73 | (unsigned) tcpi.tcpi_last_ack_recv, (unsigned) tcpi.tcpi_last_data_sent, (unsigned) tcpi.tcpi_unacked); |
76 | (unsigned) tcpi.tcpi_last_ack_recv, (unsigned) tcpi.tcpi_last_data_sent, (unsigned) tcpi.tcpi_unacked); |
74 | status = Ns_Dead; |
77 | destroy (); |
75 | } |
78 | } |
76 | } |
79 | } |
77 | #endif |
80 | #endif |
78 | |
81 | |
79 | /** |
82 | /** |
… | |
… | |
111 | #endif |
114 | #endif |
112 | } |
115 | } |
113 | else if (res == 0) |
116 | else if (res == 0) |
114 | { |
117 | { |
115 | LOG (llevError, "socket write failed, connection closed.\n"); |
118 | LOG (llevError, "socket write failed, connection closed.\n"); |
116 | status = Ns_Dead; |
119 | destroy (); |
117 | return; |
120 | return; |
118 | } |
121 | } |
119 | else if (errno == EINTR) |
122 | else if (errno == EINTR) |
120 | { |
123 | { |
121 | // just retry |
124 | // just retry |
… | |
… | |
128 | return; |
131 | return; |
129 | } |
132 | } |
130 | else |
133 | else |
131 | { |
134 | { |
132 | LOG (llevError, "socket write failed: %s\n", strerror (errno)); |
135 | LOG (llevError, "socket write failed: %s\n", strerror (errno)); |
133 | status = Ns_Dead; |
136 | destroy (); |
134 | return; |
137 | return; |
135 | } |
138 | } |
136 | } |
139 | } |
137 | |
140 | |
138 | socket_ev.poll (socket_ev.poll () & ~PE_W); |
141 | socket_ev.poll (socket_ev.poll () & ~PE_W); |
139 | } |
142 | } |
140 | |
143 | |
|
|
144 | /****************************************************************************** |
|
|
145 | * |
|
|
146 | * Start of read routines. |
|
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147 | * |
|
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148 | ******************************************************************************/ |
|
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149 | |
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150 | int |
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151 | client::next_packet () |
|
|
152 | { |
|
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153 | if (inbuf_len >= 2) |
|
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154 | { |
|
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155 | int pkt_len = (inbuf [0] << 8) | inbuf [1]; |
|
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156 | |
|
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157 | if (inbuf_len >= 2 + pkt_len) |
|
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158 | return 2 + pkt_len; |
|
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159 | |
|
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160 | if (inbuf_len == sizeof (inbuf)) |
|
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161 | { |
|
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162 | send_packet_printf ("drawinfo %d input buffer overflow - closing connection.", NDI_RED); |
|
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163 | destroy (); |
|
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164 | return -1; |
|
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165 | } |
|
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166 | } |
|
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167 | |
|
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168 | return 0; |
|
|
169 | } |
|
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170 | |
|
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171 | void |
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172 | client::skip_packet (int len) |
|
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173 | { |
|
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174 | inbuf_len -= len; |
|
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175 | memmove (inbuf, inbuf + len, inbuf_len); |
|
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176 | } |
|
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177 | |
141 | /*********************************************************************** |
178 | /***************************************************************************** |
142 | * |
179 | * Start of command dispatch area. |
143 | * packet functions/utilities |
180 | * The commands here are protocol commands. |
144 | * |
|
|
145 | **********************************************************************/ |
181 | ****************************************************************************/ |
146 | |
182 | |
147 | packet &packet::operator <<(const data &v) |
183 | // SocketCommand, PlayingCommand, should not exist with those ugly casts |
|
|
184 | #define SC(cb) (void *)static_cast<void (*)(char *, int, client *)>(cb), |
|
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185 | #define PC(cb) (void *)static_cast<void (*)(char *, int, player *)>(cb), PF_PLAYER | |
|
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186 | |
|
|
187 | /** |
|
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188 | * Dispatch table for the server. |
|
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189 | */ |
|
|
190 | static struct packet_type packets[] = { |
|
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191 | {"ncom", PC(NewPlayerCmd) PF_PLAYING }, |
|
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192 | {"command", PC(PlayerCmd) PF_PLAYING }, |
|
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193 | |
|
|
194 | {"examine", PC(ExamineCmd) PF_PLAYING }, |
|
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195 | {"apply", PC(ApplyCmd) PF_PLAYING }, |
|
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196 | {"lookat", PC(LookAt) PF_PLAYING }, |
|
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197 | {"lock", PC(LockItem) PF_PLAYING }, |
|
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198 | {"mark", PC(MarkItem) PF_PLAYING }, |
|
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199 | {"move", PC(MoveCmd) PF_PLAYING }, |
|
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200 | {"ext", PC(ExtCmd) 0 }, /* CF+ */ |
|
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201 | {"mapredraw", PC(MapRedrawCmd) 0 }, /* Added: phil */ |
|
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202 | {"mapinfo", PC(MapInfoCmd) 0 }, /* CF+ */ |
|
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203 | |
|
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204 | {"reply", SC(ReplyCmd) 0 }, |
|
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205 | {"exti", SC(ExtiCmd) 0 }, /* CF+ */ |
|
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206 | {"addme", SC(AddMeCmd) 0 }, |
|
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207 | {"askface", SC(SendFaceCmd) 0 }, /* Added: phil */ |
|
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208 | {"requestinfo", SC(RequestInfo) 0 }, |
|
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209 | {"setfacemode", SC(SetFaceMode) 0 }, |
|
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210 | {"setsound", SC(SetSound) 0 }, |
|
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211 | {"setup", SC(SetUp) 0 }, |
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212 | {"version", SC(VersionCmd) 0 }, |
|
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213 | {"toggleextendedinfos", SC(ToggleExtendedInfos) 0 }, /*Added: tchize */ |
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214 | {"toggleextendedtext", SC(ToggleExtendedText) 0 }, /*Added: tchize */ |
|
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215 | {"asksmooth", SC(AskSmooth) 0 }, /*Added: tchize (smoothing technologies) */ |
|
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216 | }; |
|
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217 | |
|
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218 | bool |
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219 | client::may_execute (const packet_type *pkt) const |
148 | { |
220 | { |
149 | if (room () < v.len) |
221 | return (!(pkt->flags & PF_PLAYER) || pl) |
150 | reset (); |
222 | && (!(pkt->flags & PF_PLAYING) || state == ST_PLAYING); |
|
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223 | } |
|
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224 | |
|
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225 | void |
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226 | client::execute (const packet_type *pkt, char *data, int datalen) |
|
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227 | { |
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228 | if (may_execute (pkt)) |
|
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229 | { |
|
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230 | //TODO: only one format |
|
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231 | if (pkt->flags & PF_PLAYER) |
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232 | ((void (*)(char *, int, player *))pkt->cb)((char *)data, datalen, pl); |
|
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233 | else |
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234 | ((void (*)(char *, int, client *))pkt->cb)((char *)data, datalen, this); |
|
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235 | } |
151 | else |
236 | else |
|
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237 | send_packet_printf ("drawinfo %d ERROR: you cannot execute '%s' now.", NDI_RED, pkt->name); |
|
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238 | } |
|
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239 | |
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240 | bool |
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241 | client::handle_packet () |
|
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242 | { |
|
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243 | int pkt_len = next_packet (); |
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244 | |
|
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245 | if (!pkt_len) |
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246 | return false; |
|
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247 | else if (pkt_len < 0) |
|
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248 | { |
|
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249 | LOG (llevError, "read error on player %s\n", |
|
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250 | pl && pl->ob ? &pl->ob->name : "[anonymous]"); |
|
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251 | destroy (); |
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252 | return false; |
152 | { |
253 | } |
153 | if (v.len) |
254 | |
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255 | inbuf [pkt_len] = 0; /* Terminate buffer - useful for string data */ |
|
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256 | |
|
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257 | /* First, break out beginning word. There are at least |
|
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258 | * a few commands that do not have any paremeters. If |
|
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259 | * we get such a command, don't worry about trying |
|
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260 | * to break it up. |
|
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261 | */ |
|
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262 | int datalen; |
|
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263 | char *data = strchr ((char *)inbuf + 2, ' '); |
|
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264 | |
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265 | if (data) |
|
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266 | { |
|
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267 | *data++ = 0; |
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268 | datalen = pkt_len - (data - (char *)inbuf); |
|
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269 | } |
|
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270 | else |
|
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271 | { |
|
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272 | data = (char *)inbuf + 2; // better read garbage than segfault |
|
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273 | datalen = 0; |
|
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274 | } |
|
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275 | |
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276 | for (packet_type *pkt = packets; pkt < packets + (sizeof (packets) / sizeof (packets[0])); ++pkt) |
|
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277 | if (!strcmp ((char *)inbuf + 2, pkt->name)) |
154 | { |
278 | { |
155 | memcpy (cur, v.ptr, v.len); |
279 | if (pkt->flags & PF_PLAYER) |
156 | cur += v.len; |
280 | queue_command (pkt, data, datalen); |
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281 | else |
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282 | execute (pkt, data, datalen); |
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283 | |
|
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284 | goto next_packet; |
157 | } |
285 | } |
|
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286 | |
|
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287 | // If we get here, we didn't find a valid command. |
|
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288 | send_packet_printf ("drawinfo %d ERROR: command '%s' not supported.", NDI_RED, (char *)inbuf + 2); |
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289 | next_packet: |
|
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290 | skip_packet (pkt_len); |
|
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291 | |
|
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292 | // input buffer has space again |
|
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293 | socket_ev.poll (socket_ev.poll () | PE_R); |
|
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294 | |
|
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295 | return true; |
|
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296 | } |
|
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297 | |
|
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298 | // callback called when socket is either readable or writable |
|
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299 | void |
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300 | client::socket_cb (iow &w, int got) |
|
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301 | { |
|
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302 | //TODO remove when we have better socket cleanup logic |
|
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303 | if (destroyed ()) |
158 | } |
304 | { |
159 | |
305 | socket_ev.poll (0); |
160 | return *this; |
306 | return; |
161 | } |
|
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162 | |
|
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163 | packet &packet::operator <<(const data8 &v) |
|
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164 | { |
|
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165 | unsigned int len = min (v.len, 0x00FF); |
|
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166 | return *this << uint8 (len) << data (v.ptr, len); |
|
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167 | } |
|
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168 | |
|
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169 | packet &packet::operator <<(const data16 &v) |
|
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170 | { |
|
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171 | unsigned int len = min (v.len, 0xFFFF); |
|
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172 | return *this << uint16 (len) << data (v.ptr, len); |
|
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173 | } |
|
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174 | |
|
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175 | packet &packet::operator <<(const char *v) |
|
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176 | { |
|
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177 | return *this << data (v, strlen (v ? v : 0)); |
|
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178 | } |
|
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179 | |
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180 | void |
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181 | packet::printf (const char *format, ...) |
|
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182 | { |
|
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183 | int size = room (); |
|
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184 | |
|
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185 | va_list ap; |
|
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186 | va_start (ap, format); |
|
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187 | int len = vsnprintf ((char *)cur, size, format, ap); |
|
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188 | va_end (ap); |
|
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189 | |
|
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190 | if (len >= size) |
|
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191 | return reset (); |
|
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192 | |
|
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193 | cur += len; |
|
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194 | } |
|
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195 | |
|
|
196 | /****************************************************************************** |
|
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197 | * |
|
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198 | * Start of read routines. |
|
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199 | * |
|
|
200 | ******************************************************************************/ |
|
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201 | |
|
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202 | int |
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203 | client::read_packet () |
|
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204 | { |
|
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205 | for (;;) |
|
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206 | { |
307 | } |
207 | if (inbuf_len >= 2) |
|
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208 | { |
|
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209 | unsigned int pkt_len = (inbuf [0] << 8) | inbuf [1]; |
|
|
210 | |
308 | |
211 | if (inbuf_len >= 2 + pkt_len) |
309 | if (got & PE_W) |
212 | return pkt_len + 2; |
310 | { |
213 | } |
311 | write_outputbuffer (); |
|
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312 | |
|
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313 | if (!outputbuffer.len) |
|
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314 | socket_ev.poll (socket_ev.poll () & ~PE_W); |
|
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315 | } |
|
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316 | |
|
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317 | if (got & PE_R) |
|
|
318 | { |
|
|
319 | //TODO: rate-limit tcp connection in better ways, important |
214 | |
320 | |
215 | int amount = sizeof (inbuf) - inbuf_len; |
321 | int amount = sizeof (inbuf) - inbuf_len; |
216 | |
322 | |
217 | if (amount <= 0) |
323 | if (!amount) |
218 | { |
324 | { |
219 | LOG (llevError, "packet too large");//TODO |
325 | // input buffer full |
|
|
326 | socket_ev.poll (socket_ev.poll () & ~PE_R); |
220 | return -1; |
327 | return; |
221 | } |
328 | } |
222 | |
329 | |
223 | amount = read (fd, inbuf + inbuf_len, amount); |
330 | amount = read (fd, inbuf + inbuf_len, amount); |
224 | |
331 | |
225 | if (!amount) |
332 | if (!amount) |
226 | { |
333 | { |
227 | status = Ns_Dead; |
334 | destroy (); |
228 | return -1; |
335 | return; |
229 | } |
336 | } |
230 | else if (amount < 0) |
337 | else if (amount < 0) |
231 | { |
338 | { |
232 | if (errno != EAGAIN && errno != EINTR) |
339 | if (errno != EAGAIN && errno != EINTR) |
233 | { |
340 | { |
234 | LOG (llevError, "read error: %s\n", strerror (errno)); |
341 | LOG (llevError, "read error: %s\n", strerror (errno)); |
|
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342 | destroy (); |
235 | return -1; |
343 | return; |
236 | } |
344 | } |
237 | |
345 | |
238 | return 0; |
346 | // should not be here, normally |
|
|
347 | } |
|
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348 | else |
239 | } |
349 | { |
240 | |
|
|
241 | inbuf_len += amount; |
350 | inbuf_len += amount; |
242 | |
351 | |
243 | cst_tot.ibytes += amount; |
352 | cst_tot.ibytes += amount; |
244 | cst_lst.ibytes += amount; |
353 | cst_lst.ibytes += amount; |
245 | } |
|
|
246 | } |
|
|
247 | |
354 | |
|
|
355 | cmd_ev.start (); |
|
|
356 | } |
|
|
357 | } |
|
|
358 | } |
|
|
359 | |
|
|
360 | // called whenever we have additional commands to process |
248 | void |
361 | void |
249 | client::skip_packet (int len) |
362 | client::cmd_cb (iw &w) |
250 | { |
363 | { |
251 | inbuf_len -= len; |
364 | if (handle_packet ()) |
252 | memmove (inbuf, inbuf + len, inbuf_len); |
365 | w.start (); |
|
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366 | else |
|
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367 | flush (); |
253 | } |
368 | } |
254 | |
369 | |
255 | /******************************************************************************* |
370 | /******************************************************************************* |
256 | * |
371 | * |
257 | * Start of write related routines. |
372 | * Start of write related routines. |
… | |
… | |
269 | { |
384 | { |
270 | char *buf = (char *)buf_; |
385 | char *buf = (char *)buf_; |
271 | char *pos = buf; |
386 | char *pos = buf; |
272 | int amt = 0; |
387 | int amt = 0; |
273 | |
388 | |
274 | if (status == Ns_Dead || !buf) |
389 | if (destroyed () || !buf) |
275 | { |
|
|
276 | LOG (llevDebug, "Write_To_Socket called with dead socket\n"); |
|
|
277 | return; |
390 | return; |
278 | } |
|
|
279 | |
391 | |
280 | if ((len + outputbuffer.len) > SOCKETBUFSIZE) |
392 | if (len + outputbuffer.len > SOCKETBUFSIZE) |
281 | { |
393 | { |
282 | LOG (llevDebug, "Socket on fd %d has overrun internal buffer - marking as dead\n", fd); |
394 | LOG (llevDebug, "socket on fd %d has overrun internal buffer - marking as dead\n", fd); |
283 | status = Ns_Dead; |
395 | destroy (); |
284 | return; |
396 | return; |
285 | } |
397 | } |
286 | |
398 | |
287 | int avail, end; |
399 | int avail, end; |
288 | |
400 | |
… | |
… | |
306 | } |
418 | } |
307 | |
419 | |
308 | outputbuffer.len += len; |
420 | outputbuffer.len += len; |
309 | } |
421 | } |
310 | |
422 | |
311 | void |
|
|
312 | client::socket_cb (iow &w, int got) |
|
|
313 | { |
|
|
314 | write_outputbuffer (); |
|
|
315 | |
|
|
316 | if (!outputbuffer.len) |
|
|
317 | socket_ev.poll (socket_ev.poll () & ~PE_W); |
|
|
318 | } |
|
|
319 | |
|
|
320 | /** |
423 | /** |
321 | * Takes a string of data, and writes it out to the socket. A very handy |
424 | * Takes a string of data, and writes it out to the socket. A very handy |
322 | * shortcut function. |
425 | * shortcut function. |
323 | */ |
426 | */ |
324 | void |
427 | void |
325 | client::send_packet (packet &sl) |
428 | client::send_packet (packet &sl) |
326 | { |
429 | { |
327 | if (status == Ns_Dead) |
430 | if (destroyed ()) |
328 | return; |
431 | return; |
329 | |
432 | |
330 | if (sl.length () >= MAXSOCKBUF) |
433 | if (sl.length () >= MAXSOCKBUF) |
331 | { |
434 | { |
332 | LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ()); |
435 | LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ()); |
… | |
… | |
358 | |
461 | |
359 | void |
462 | void |
360 | client::send_packet (const char *buf) |
463 | client::send_packet (const char *buf) |
361 | { |
464 | { |
362 | send_packet (buf, strlen (buf)); |
465 | send_packet (buf, strlen (buf)); |
|
|
466 | } |
|
|
467 | |
|
|
468 | void |
|
|
469 | client::send_packet_printf (const char *format, ...) |
|
|
470 | { |
|
|
471 | packet sl; |
|
|
472 | |
|
|
473 | va_list ap; |
|
|
474 | va_start (ap, format); |
|
|
475 | sl.vprintf (format, ap); |
|
|
476 | va_end (ap); |
|
|
477 | |
|
|
478 | send_packet (sl); |
|
|
479 | } |
|
|
480 | |
|
|
481 | /*********************************************************************** |
|
|
482 | * |
|
|
483 | * packet functions/utilities |
|
|
484 | * |
|
|
485 | **********************************************************************/ |
|
|
486 | |
|
|
487 | packet::packet (const char *name) |
|
|
488 | { |
|
|
489 | reset (); |
|
|
490 | |
|
|
491 | int len = strlen (name); |
|
|
492 | memcpy (cur, name, len); cur += len; |
|
|
493 | *cur++ = ' '; |
|
|
494 | } |
|
|
495 | |
|
|
496 | packet &packet::operator <<(const data &v) |
|
|
497 | { |
|
|
498 | if (room () < v.len) |
|
|
499 | reset (); |
|
|
500 | else |
|
|
501 | { |
|
|
502 | if (v.len) |
|
|
503 | { |
|
|
504 | memcpy (cur, v.ptr, v.len); |
|
|
505 | cur += v.len; |
|
|
506 | } |
|
|
507 | } |
|
|
508 | |
|
|
509 | return *this; |
|
|
510 | } |
|
|
511 | |
|
|
512 | packet &packet::operator <<(const data8 &v) |
|
|
513 | { |
|
|
514 | unsigned int len = min (v.len, 0x00FF); |
|
|
515 | return *this << uint8 (len) << data (v.ptr, len); |
|
|
516 | } |
|
|
517 | |
|
|
518 | packet &packet::operator <<(const data16 &v) |
|
|
519 | { |
|
|
520 | unsigned int len = min (v.len, 0xFFFF); |
|
|
521 | return *this << uint16 (len) << data (v.ptr, len); |
|
|
522 | } |
|
|
523 | |
|
|
524 | packet &packet::operator <<(const char *v) |
|
|
525 | { |
|
|
526 | return *this << data (v, strlen (v ? v : 0)); |
|
|
527 | } |
|
|
528 | |
|
|
529 | void |
|
|
530 | packet::vprintf (const char *format, va_list ap) |
|
|
531 | { |
|
|
532 | int size = room (); |
|
|
533 | |
|
|
534 | int len = vsnprintf ((char *)cur, size, format, ap); |
|
|
535 | |
|
|
536 | if (len >= size) |
|
|
537 | return reset (); |
|
|
538 | |
|
|
539 | cur += len; |
363 | } |
540 | } |
364 | |
541 | |
365 | /****************************************************************************** |
542 | /****************************************************************************** |
366 | * |
543 | * |
367 | * statistics logging functions. |
544 | * statistics logging functions. |