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 |
… | |
… | |
33 | */ |
34 | */ |
34 | |
35 | |
35 | using namespace std; |
36 | using namespace std; |
36 | |
37 | |
37 | #include <global.h> |
38 | #include <global.h> |
38 | #include <newclient.h> |
|
|
39 | #include <sproto.h> |
39 | #include <sproto.h> |
40 | #include <cstdarg> |
40 | #include <cstdarg> |
41 | |
41 | |
42 | #ifdef __linux__ |
42 | #ifdef __linux__ |
43 | # include <sys/types.h> |
43 | # include <sys/types.h> |
44 | # include <sys/socket.h> |
44 | # include <sys/socket.h> |
45 | # include <netinet/in.h> |
45 | # include <netinet/in.h> |
46 | # define TCP_HZ 1000 // sorry... |
|
|
47 | # include <netinet/tcp.h> |
46 | # include <netinet/tcp.h> |
48 | #endif |
47 | #endif |
49 | |
48 | |
50 | // 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 |
51 | // easily die in 20 seconds... |
50 | // easily die in 20 seconds... |
52 | #define SOCKET_TIMEOUT1 10 |
51 | #define SOCKET_TIMEOUT1 10 * 1000 |
53 | #define SOCKET_TIMEOUT2 20 |
52 | #define SOCKET_TIMEOUT2 20 * 1000 |
54 | |
53 | |
55 | void |
54 | void |
56 | client_socket::flush () |
55 | client::flush () |
57 | { |
56 | { |
|
|
57 | if (destroyed ()) |
|
|
58 | return; |
|
|
59 | |
58 | #ifdef __linux__ |
60 | #ifdef __linux__ |
59 | // check time of last ack, and, if too old, kill connection |
61 | // check time of last ack, and, if too old, kill connection |
60 | struct tcp_info tcpi; |
62 | struct tcp_info tcpi; |
61 | socklen_t len = sizeof (tcpi); |
63 | socklen_t len = sizeof (tcpi); |
62 | |
64 | |
63 | if (!getsockopt (fd, IPPROTO_TCP, TCP_INFO, &tcpi, &len) && len == sizeof (tcpi)) |
65 | if (!getsockopt (fd, IPPROTO_TCP, TCP_INFO, &tcpi, &len) && len == sizeof (tcpi)) |
64 | { |
66 | { |
65 | 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; |
66 | |
68 | |
|
|
69 | rtt = tcpi.tcpi_rtt; |
|
|
70 | rttvar = tcpi.tcpi_rttvar; |
|
|
71 | |
67 | 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 |
68 | && 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 |
69 | { |
74 | { |
70 | 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, |
71 | (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); |
72 | status = Ns_Dead; |
77 | destroy (); |
73 | } |
78 | } |
74 | } |
79 | } |
75 | #endif |
80 | #endif |
76 | |
81 | |
77 | /** |
82 | /** |
… | |
… | |
86 | |
91 | |
87 | write_outputbuffer (); |
92 | write_outputbuffer (); |
88 | } |
93 | } |
89 | |
94 | |
90 | void |
95 | void |
91 | client_socket::write_outputbuffer () |
96 | client::write_outputbuffer () |
92 | { |
97 | { |
93 | while (outputbuffer.len) |
98 | while (outputbuffer.len) |
94 | { |
99 | { |
95 | int res = write (fd, outputbuffer.data + outputbuffer.start, |
100 | int res = write (fd, outputbuffer.data + outputbuffer.start, |
96 | min (outputbuffer.len, SOCKETBUFSIZE - outputbuffer.start)); |
101 | min (outputbuffer.len, SOCKETBUFSIZE - outputbuffer.start)); |
… | |
… | |
109 | #endif |
114 | #endif |
110 | } |
115 | } |
111 | else if (res == 0) |
116 | else if (res == 0) |
112 | { |
117 | { |
113 | LOG (llevError, "socket write failed, connection closed.\n"); |
118 | LOG (llevError, "socket write failed, connection closed.\n"); |
114 | status = Ns_Dead; |
119 | destroy (); |
115 | return; |
120 | return; |
116 | } |
121 | } |
117 | else if (errno == EINTR) |
122 | else if (errno == EINTR) |
118 | { |
123 | { |
119 | // just retry |
124 | // just retry |
… | |
… | |
126 | return; |
131 | return; |
127 | } |
132 | } |
128 | else |
133 | else |
129 | { |
134 | { |
130 | LOG (llevError, "socket write failed: %s\n", strerror (errno)); |
135 | LOG (llevError, "socket write failed: %s\n", strerror (errno)); |
131 | status = Ns_Dead; |
136 | destroy (); |
132 | return; |
137 | return; |
133 | } |
138 | } |
134 | } |
139 | } |
135 | |
140 | |
136 | socket_ev.poll (socket_ev.poll () & ~PE_W); |
141 | socket_ev.poll (socket_ev.poll () & ~PE_W); |
137 | } |
142 | } |
138 | |
143 | |
|
|
144 | /****************************************************************************** |
|
|
145 | * |
|
|
146 | * Start of read routines. |
|
|
147 | * |
|
|
148 | ******************************************************************************/ |
|
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149 | |
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|
150 | int |
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|
151 | client::next_packet () |
|
|
152 | { |
|
|
153 | if (inbuf_len >= 2) |
|
|
154 | { |
|
|
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)) |
|
|
161 | { |
|
|
162 | send_packet_printf ("drawinfo %d input buffer overflow - closing connection.", NDI_RED); |
|
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163 | destroy (); |
|
|
164 | return -1; |
|
|
165 | } |
|
|
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 | } |
|
|
177 | |
139 | /*********************************************************************** |
178 | /***************************************************************************** |
140 | * |
179 | * Start of command dispatch area. |
141 | * packet functions/utilities |
180 | * The commands here are protocol commands. |
142 | * |
|
|
143 | **********************************************************************/ |
181 | ****************************************************************************/ |
144 | |
182 | |
145 | 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 | PF_COMMAND6 }, |
|
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192 | {"command", PC(PlayerCmd) PF_PLAYING | PF_COMMAND0 }, |
|
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193 | |
|
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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+ */ |
|
|
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 |
146 | { |
220 | { |
147 | if (room () < v.len) |
221 | return (!(pkt->flags & PF_PLAYER) || pl) |
148 | reset (); |
222 | && (!(pkt->flags & PF_PLAYING) || state == ST_PLAYING); |
|
|
223 | } |
|
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224 | |
|
|
225 | // HACK: some commands currently should be executed |
|
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226 | // even when the player is frozen. this hack detects |
|
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227 | // those commands. it should be folded into may_execute, |
|
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228 | // but kept seperate to emphasise the hack aspect, i.e. |
|
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229 | // do it better, then remove. |
|
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230 | static bool |
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231 | always_immediate (const client *ns, const packet_type *pkt, const char *data, int len) |
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232 | { |
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233 | if (!(pkt->flags & (PF_COMMAND0 | PF_COMMAND6))) |
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234 | return false; |
|
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235 | |
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236 | if (!ns->pl || !ns->pl->ob || !ns->pl->ob->map) |
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237 | return false; |
|
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238 | |
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239 | if (pkt->flags & PF_COMMAND6) |
|
|
240 | { |
|
|
241 | data += 6; |
|
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242 | len -= 6; |
|
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243 | } |
|
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244 | |
|
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245 | if (len > 4 && !strncmp (data, "say " , 4)) |
|
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246 | return true; |
|
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247 | if (len > 5 && !strncmp (data, "chat ", 5)) |
|
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248 | return true; |
|
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249 | |
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250 | return false; |
|
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251 | } |
|
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252 | |
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253 | void |
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254 | client::execute (const packet_type *pkt, char *data, int datalen) |
|
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255 | { |
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256 | if (may_execute (pkt) || always_immediate (this, pkt, data, datalen)) |
|
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257 | { |
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258 | //TODO: only one format |
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259 | if (pkt->flags & PF_PLAYER) |
|
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260 | ((void (*)(char *, int, player *))pkt->cb)((char *)data, datalen, pl); |
|
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261 | else |
|
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262 | ((void (*)(char *, int, client *))pkt->cb)((char *)data, datalen, this); |
|
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263 | } |
149 | else |
264 | else |
|
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265 | send_packet_printf ("drawinfo %d ERROR: you cannot execute '%s' now.", NDI_RED, pkt->name); |
|
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266 | } |
|
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267 | |
|
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268 | bool |
|
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269 | client::handle_packet () |
|
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270 | { |
|
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271 | int pkt_len = next_packet (); |
|
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272 | |
|
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273 | if (!pkt_len) |
|
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274 | return false; |
|
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275 | else if (pkt_len < 0) |
|
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276 | { |
|
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277 | LOG (llevError, "read error on player %s\n", |
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278 | pl && pl->ob ? &pl->ob->name : "[anonymous]"); |
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279 | destroy (); |
|
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280 | return false; |
150 | { |
281 | } |
151 | if (v.len) |
282 | |
|
|
283 | inbuf [pkt_len] = 0; /* Terminate buffer - useful for string data */ |
|
|
284 | |
|
|
285 | /* First, break out beginning word. There are at least |
|
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286 | * a few commands that do not have any paremeters. If |
|
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287 | * we get such a command, don't worry about trying |
|
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288 | * to break it up. |
|
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289 | */ |
|
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290 | int datalen; |
|
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291 | char *data = strchr ((char *)inbuf + 2, ' '); |
|
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292 | |
|
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293 | if (data) |
|
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294 | { |
|
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295 | *data++ = 0; |
|
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296 | datalen = pkt_len - (data - (char *)inbuf); |
|
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297 | } |
|
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298 | else |
|
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299 | { |
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300 | data = (char *)inbuf + 2; // better read garbage than segfault |
|
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301 | datalen = 0; |
|
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302 | } |
|
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303 | |
|
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304 | for (packet_type *pkt = packets; pkt < packets + (sizeof (packets) / sizeof (packets[0])); ++pkt) |
|
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305 | if (!strcmp ((char *)inbuf + 2, pkt->name)) |
152 | { |
306 | { |
153 | memcpy (cur, v.ptr, v.len); |
307 | if (pkt->flags & PF_PLAYER && !always_immediate (this, pkt, data, datalen)) |
154 | cur += v.len; |
308 | queue_command (pkt, data, datalen); |
|
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309 | else |
|
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310 | execute (pkt, data, datalen); |
|
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311 | |
|
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312 | goto next_packet; |
155 | } |
313 | } |
|
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314 | |
|
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315 | // If we get here, we didn't find a valid command. |
|
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316 | send_packet_printf ("drawinfo %d ERROR: command '%s' not supported.", NDI_RED, (char *)inbuf + 2); |
|
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317 | next_packet: |
|
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318 | skip_packet (pkt_len); |
|
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319 | |
|
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320 | // input buffer has space again |
|
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321 | socket_ev.poll (socket_ev.poll () | PE_R); |
|
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322 | |
|
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323 | return true; |
|
|
324 | } |
|
|
325 | |
|
|
326 | // callback called when socket is either readable or writable |
|
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327 | void |
|
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328 | client::socket_cb (iow &w, int got) |
|
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329 | { |
|
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330 | //TODO remove when we have better socket cleanup logic |
|
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331 | if (destroyed ()) |
156 | } |
332 | { |
157 | |
333 | socket_ev.poll (0); |
158 | return *this; |
334 | return; |
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 | { |
|
|
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 | } |
|
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193 | |
|
|
194 | /****************************************************************************** |
|
|
195 | * |
|
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196 | * Start of read routines. |
|
|
197 | * |
|
|
198 | ******************************************************************************/ |
|
|
199 | |
|
|
200 | int |
|
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201 | client_socket::read_packet () |
|
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202 | { |
|
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203 | for (;;) |
|
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204 | { |
335 | } |
205 | if (inbuf_len >= 2) |
|
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206 | { |
|
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207 | unsigned int pkt_len = (inbuf [0] << 8) | inbuf [1]; |
|
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208 | |
336 | |
209 | if (inbuf_len >= 2 + pkt_len) |
337 | if (got & PE_W) |
210 | return pkt_len + 2; |
338 | { |
211 | } |
339 | write_outputbuffer (); |
|
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340 | |
|
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341 | if (!outputbuffer.len) |
|
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342 | socket_ev.poll (socket_ev.poll () & ~PE_W); |
|
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343 | } |
|
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344 | |
|
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345 | if (got & PE_R) |
|
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346 | { |
|
|
347 | //TODO: rate-limit tcp connection in better ways, important |
212 | |
348 | |
213 | int amount = sizeof (inbuf) - inbuf_len; |
349 | int amount = sizeof (inbuf) - inbuf_len; |
214 | |
350 | |
215 | if (amount <= 0) |
351 | if (!amount) |
216 | { |
352 | { |
217 | LOG (llevError, "packet too large");//TODO |
353 | // input buffer full |
|
|
354 | socket_ev.poll (socket_ev.poll () & ~PE_R); |
218 | return -1; |
355 | return; |
219 | } |
356 | } |
220 | |
357 | |
221 | amount = read (fd, inbuf + inbuf_len, amount); |
358 | amount = read (fd, inbuf + inbuf_len, amount); |
222 | |
359 | |
223 | if (!amount) |
360 | if (!amount) |
224 | { |
361 | { |
225 | status = Ns_Dead; |
362 | destroy (); |
226 | return -1; |
363 | return; |
227 | } |
364 | } |
228 | else if (amount < 0) |
365 | else if (amount < 0) |
229 | { |
366 | { |
230 | if (errno != EAGAIN && errno != EINTR) |
367 | if (errno != EAGAIN && errno != EINTR) |
231 | { |
368 | { |
232 | LOG (llevError, "read error: %s\n", strerror (errno)); |
369 | LOG (llevError, "read error: %s\n", strerror (errno)); |
|
|
370 | destroy (); |
233 | return -1; |
371 | return; |
234 | } |
372 | } |
235 | |
373 | |
236 | return 0; |
374 | // should not be here, normally |
|
|
375 | } |
|
|
376 | else |
237 | } |
377 | { |
238 | |
|
|
239 | inbuf_len += amount; |
378 | inbuf_len += amount; |
240 | |
379 | |
241 | cst_tot.ibytes += amount; |
380 | cst_tot.ibytes += amount; |
242 | cst_lst.ibytes += amount; |
381 | cst_lst.ibytes += amount; |
243 | } |
|
|
244 | } |
|
|
245 | |
382 | |
|
|
383 | cmd_ev.start (); |
|
|
384 | } |
|
|
385 | } |
|
|
386 | } |
|
|
387 | |
|
|
388 | // called whenever we have additional commands to process |
246 | void |
389 | void |
247 | client_socket::skip_packet (int len) |
390 | client::cmd_cb (iw &w) |
248 | { |
391 | { |
249 | inbuf_len -= len; |
392 | if (handle_packet ()) |
250 | memmove (inbuf, inbuf + len, inbuf_len); |
393 | w.start (); |
|
|
394 | else |
|
|
395 | flush (); |
251 | } |
396 | } |
252 | |
397 | |
253 | /******************************************************************************* |
398 | /******************************************************************************* |
254 | * |
399 | * |
255 | * Start of write related routines. |
400 | * Start of write related routines. |
… | |
… | |
261 | * |
406 | * |
262 | * ns is the socket we are adding the data to, buf is the start of the |
407 | * 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. |
408 | * data, and len is the number of bytes to add. |
264 | */ |
409 | */ |
265 | void |
410 | void |
266 | client_socket::send (void *buf_, int len) |
411 | client::send (void *buf_, int len) |
267 | { |
412 | { |
268 | char *buf = (char *)buf_; |
413 | char *buf = (char *)buf_; |
269 | char *pos = buf; |
|
|
270 | int amt = 0; |
|
|
271 | |
414 | |
272 | if (status == Ns_Dead || !buf) |
415 | if (destroyed () || !buf) |
273 | { |
|
|
274 | LOG (llevDebug, "Write_To_Socket called with dead socket\n"); |
|
|
275 | return; |
416 | return; |
276 | } |
|
|
277 | |
417 | |
278 | if ((len + outputbuffer.len) > SOCKETBUFSIZE) |
418 | if (len + outputbuffer.len > SOCKETBUFSIZE) |
279 | { |
419 | { |
280 | LOG (llevDebug, "Socket on fd %d has overrun internal buffer - marking as dead\n", fd); |
420 | LOG (llevDebug, "socket on fd %d has overrun internal buffer - marking as dead\n", fd); |
281 | status = Ns_Dead; |
421 | destroy (); |
282 | return; |
422 | return; |
283 | } |
423 | } |
284 | |
424 | |
285 | int avail, end; |
425 | int avail, end; |
286 | |
426 | |
… | |
… | |
304 | } |
444 | } |
305 | |
445 | |
306 | outputbuffer.len += len; |
446 | outputbuffer.len += len; |
307 | } |
447 | } |
308 | |
448 | |
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 | /** |
449 | /** |
319 | * Takes a string of data, and writes it out to the socket. A very handy |
450 | * Takes a string of data, and writes it out to the socket. A very handy |
320 | * shortcut function. |
451 | * shortcut function. |
321 | */ |
452 | */ |
322 | void |
453 | void |
323 | client_socket::send_packet (packet &sl) |
454 | client::send_packet (packet &sl) |
324 | { |
455 | { |
325 | if (status == Ns_Dead) |
456 | if (destroyed ()) |
326 | return; |
457 | return; |
327 | |
458 | |
328 | if (sl.length () >= MAXSOCKBUF) |
459 | if (sl.length () >= MAXSOCKBUF) |
329 | { |
460 | { |
330 | LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ()); |
461 | LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ()); |
… | |
… | |
344 | |
475 | |
345 | send (sl.buf_, sl.length () + sl.hdrlen); |
476 | send (sl.buf_, sl.length () + sl.hdrlen); |
346 | } |
477 | } |
347 | |
478 | |
348 | void |
479 | void |
349 | client_socket::send_packet (const char *buf, int len) |
480 | client::send_packet (const char *buf, int len) |
350 | { |
481 | { |
351 | packet sl; |
482 | packet sl; |
352 | |
483 | |
353 | sl << data (buf, len); |
484 | sl << data (buf, len); |
354 | send_packet (sl); |
485 | send_packet (sl); |
355 | } |
486 | } |
356 | |
487 | |
357 | void |
488 | void |
358 | client_socket::send_packet (const char *buf) |
489 | client::send_packet (const char *buf) |
359 | { |
490 | { |
360 | send_packet (buf, strlen (buf)); |
491 | send_packet (buf, strlen (buf)); |
|
|
492 | } |
|
|
493 | |
|
|
494 | void |
|
|
495 | client::send_packet_printf (const char *format, ...) |
|
|
496 | { |
|
|
497 | packet sl; |
|
|
498 | |
|
|
499 | va_list ap; |
|
|
500 | va_start (ap, format); |
|
|
501 | sl.vprintf (format, ap); |
|
|
502 | va_end (ap); |
|
|
503 | |
|
|
504 | send_packet (sl); |
|
|
505 | } |
|
|
506 | |
|
|
507 | /*********************************************************************** |
|
|
508 | * |
|
|
509 | * packet functions/utilities |
|
|
510 | * |
|
|
511 | **********************************************************************/ |
|
|
512 | |
|
|
513 | packet::packet (const char *name) |
|
|
514 | { |
|
|
515 | reset (); |
|
|
516 | |
|
|
517 | int len = strlen (name); |
|
|
518 | memcpy (cur, name, len); cur += len; |
|
|
519 | *cur++ = ' '; |
|
|
520 | } |
|
|
521 | |
|
|
522 | packet &packet::operator <<(const data &v) |
|
|
523 | { |
|
|
524 | if (room () < v.len) |
|
|
525 | reset (); |
|
|
526 | else |
|
|
527 | { |
|
|
528 | if (v.len) |
|
|
529 | { |
|
|
530 | memcpy (cur, v.ptr, v.len); |
|
|
531 | cur += v.len; |
|
|
532 | } |
|
|
533 | } |
|
|
534 | |
|
|
535 | return *this; |
|
|
536 | } |
|
|
537 | |
|
|
538 | packet &packet::operator <<(const data8 &v) |
|
|
539 | { |
|
|
540 | unsigned int len = min (v.len, 0x00FF); |
|
|
541 | return *this << uint8 (len) << data (v.ptr, len); |
|
|
542 | } |
|
|
543 | |
|
|
544 | packet &packet::operator <<(const data16 &v) |
|
|
545 | { |
|
|
546 | unsigned int len = min (v.len, 0xFFFF); |
|
|
547 | return *this << uint16 (len) << data (v.ptr, len); |
|
|
548 | } |
|
|
549 | |
|
|
550 | packet &packet::operator <<(const char *v) |
|
|
551 | { |
|
|
552 | return *this << data (v, strlen (v ? v : 0)); |
|
|
553 | } |
|
|
554 | |
|
|
555 | void |
|
|
556 | packet::vprintf (const char *format, va_list ap) |
|
|
557 | { |
|
|
558 | int size = room (); |
|
|
559 | |
|
|
560 | int len = vsnprintf ((char *)cur, size, format, ap); |
|
|
561 | |
|
|
562 | if (len >= size) |
|
|
563 | return reset (); |
|
|
564 | |
|
|
565 | cur += len; |
361 | } |
566 | } |
362 | |
567 | |
363 | /****************************************************************************** |
568 | /****************************************************************************** |
364 | * |
569 | * |
365 | * statistics logging functions. |
570 | * statistics logging functions. |