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Comparing deliantra/server/socket/lowlevel.C (file contents):
Revision 1.20 by root, Thu Dec 14 21:46:34 2006 UTC vs.
Revision 1.47 by root, Tue Jun 12 10:29:52 2007 UTC

1/* 1/*
2 CrossFire, A Multiplayer game for X-windows 2 * This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game.
3 3 *
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 it
7 it under the terms of the GNU General Public License as published by 8 * under the terms of the GNU General Public License as published by the Free
8 the Free Software Foundation; either version 2 of the License, or 9 * Software Foundation; either version 2 of the License, or (at your option)
9 (at your option) any later version. 10 * 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, but
12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 GNU General Public License for more details. 15 * 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 along
17 along with this program; if not, write to the Free Software 18 * with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 19 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19
20 The author can be reached via e-mail to mark@pyramid.com
21*/
22
23/**
24 * \file
25 * Low-level socket-related functions.
26 * 20 *
27 * \date 2003-12-02 21 * The authors can be reached via e-mail to <crossfire@schmorp.de>
28 *
29 * Contains some base functions that both the client and server
30 * can use. As such, depending what we are being compiled for will
31 * determine what we can include. the client is designed have
32 * CFCLIENT defined as part of its compile flags.
33 */ 22 */
34 23
35using namespace std; 24using namespace std;
36 25
37#include <global.h> 26#include <global.h>
38#include <newclient.h>
39#include <sproto.h> 27#include <sproto.h>
40#include <cstdarg> 28#include <cstdarg>
41 29
42#ifdef __linux__ 30#if HAVE_TCP_INFO
43# include <sys/types.h> 31# include <sys/types.h>
44# include <sys/socket.h> 32# include <sys/socket.h>
45# include <netinet/in.h> 33# include <netinet/in.h>
46# define TCP_HZ 1000 // sorry...
47# include <netinet/tcp.h> 34# include <netinet/tcp.h>
48#endif 35#endif
49 36
50// use a really low timeout, as it doesn't cost any bandwidth, and you can 37// disconnect a socket after this many seconds without an ack
51// easily die in 20 seconds...
52#define SOCKET_TIMEOUT1 10 38#define SOCKET_TIMEOUT 8.
53#define SOCKET_TIMEOUT2 20
54 39
40// force a packet when idle for more than this many seconds,
41// forcing an ack regularly.
42#define IDLE_PING 2.
43
55void 44void
56client_socket::flush () 45client::flush ()
57{ 46{
58#ifdef __linux__ 47 if (destroyed ())
48 return;
49
50#if HAVE_TCP_INFO
51 // check about once per second, spread evenly over all clients
52 // do this only when player is active
53 if (!((pticks + fd) & 7) && pl && pl->active)
54 {
59 // check time of last ack, and, if too old, kill connection 55 // check time of last ack, and, if too old, kill connection
60 struct tcp_info tcpi; 56 struct tcp_info tcpi;
61 socklen_t len = sizeof (tcpi); 57 socklen_t len = sizeof (tcpi);
62 58
63 if (!getsockopt (fd, IPPROTO_TCP, TCP_INFO, &tcpi, &len) && len == sizeof (tcpi)) 59 if (!getsockopt (fd, IPPROTO_TCP, TCP_INFO, &tcpi, &len) && len == sizeof (tcpi))
64 { 60 {
65 unsigned int diff = tcpi.tcpi_last_ack_recv - tcpi.tcpi_last_data_sent; 61 if (tcpi.tcpi_snd_mss)
62 mss = tcpi.tcpi_snd_mss;
66 63
67 if (tcpi.tcpi_unacked && SOCKET_TIMEOUT1 * TCP_HZ < diff && diff < 0x80000000UL // ack delayed for 20s 64 rtt = tcpi.tcpi_rtt;
68 && SOCKET_TIMEOUT2 * TCP_HZ < tcpi.tcpi_last_data_sent) // no data sent for 10s 65 rttvar = tcpi.tcpi_rttvar;
66
67 if (tcpi.tcpi_last_ack_recv > int (SOCKET_TIMEOUT * 1000))
69 { 68 {
69 send_msg (NDI_RED, "connection-timeout", "safety disconnect due to tcp/ip timeout (no packets received)");
70 write_outputbuffer ();
71
70 LOG (llevDebug, "Connection on fd %d closed due to ack timeout (%u/%u/%u)\n", fd, 72 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); 73 (unsigned)tcpi.tcpi_last_ack_recv, (unsigned)tcpi.tcpi_last_data_sent, (unsigned)tcpi.tcpi_unacked);
72 status = Ns_Dead; 74 destroy ();
75 }
73 } 76 }
74 } 77 }
75#endif 78#endif
76 79
77 /** 80 /**
… …
79 * 82 *
80 * When the socket is clear to write, and we have backlogged data, this 83 * When the socket is clear to write, and we have backlogged data, this
81 * is called to write it out. 84 * is called to write it out.
82 */ 85 */
83 86
84 if (!outputbuffer.len || socket_ev.poll () & PE_W) 87 // write a nop to the socket at least every IDLE_NOP seconds.
88 if (!outputbuffer.len)
89 {
90 if (last_send + IDLE_PING <= NOW && pl && pl->active)
91 {
92 // this is a bit ugly, but map1/map1a seem to be the only
93 // nop'able commands and they are quite small.
94 packet sl (mapmode == Map1Cmd ? "map1" : "map1a");
95 send_packet (sl);
96 }
97 else
98 return;
99 }
100
101 if (socket_ev.poll () & PE_W)
85 return; 102 return;
86 103
104 last_send = NOW;
87 write_outputbuffer (); 105 write_outputbuffer ();
88} 106}
89 107
90void 108void
91client_socket::write_outputbuffer () 109client::write_outputbuffer ()
92{ 110{
93 while (outputbuffer.len) 111 while (outputbuffer.len)
94 { 112 {
95 int res = write (fd, outputbuffer.data + outputbuffer.start, 113 int res = write (fd, outputbuffer.data + outputbuffer.start,
96 min (outputbuffer.len, SOCKETBUFSIZE - outputbuffer.start)); 114 min (outputbuffer.len, SOCKETBUFSIZE - outputbuffer.start));
… …
101 /* wrap back to start of buffer */ 119 /* wrap back to start of buffer */
102 if (outputbuffer.start == SOCKETBUFSIZE) 120 if (outputbuffer.start == SOCKETBUFSIZE)
103 outputbuffer.start = 0; 121 outputbuffer.start = 0;
104 122
105 outputbuffer.len -= res; 123 outputbuffer.len -= res;
106#ifdef CS_LOGSTATS
107 cst_tot.obytes += res;
108 cst_lst.obytes += res;
109#endif
110 } 124 }
111 else if (res == 0) 125 else if (res == 0)
112 { 126 {
113 LOG (llevError, "socket write failed, connection closed.\n"); 127 LOG (llevError, "socket write failed, connection closed.\n");
114 status = Ns_Dead; 128 destroy ();
115 return; 129 return;
116 } 130 }
117 else if (errno == EINTR) 131 else if (errno == EINTR)
118 { 132 {
119 // just retry 133 // just retry
… …
126 return; 140 return;
127 } 141 }
128 else 142 else
129 { 143 {
130 LOG (llevError, "socket write failed: %s\n", strerror (errno)); 144 LOG (llevError, "socket write failed: %s\n", strerror (errno));
131 status = Ns_Dead; 145 destroy ();
132 return; 146 return;
133 } 147 }
134 } 148 }
135 149
136 socket_ev.poll (socket_ev.poll () & ~PE_W); 150 socket_ev.poll (socket_ev.poll () & ~PE_W);
137}
138
139/***********************************************************************
140 *
141 * packet functions/utilities
142 *
143 **********************************************************************/
144
145packet &packet::operator <<(const data &v)
146{
147 if (room () < v.len)
148 reset ();
149 else
150 {
151 if (v.len)
152 {
153 memcpy (cur, v.ptr, v.len);
154 cur += v.len;
155 }
156 }
157
158 return *this;
159}
160
161packet &packet::operator <<(const data8 &v)
162{
163 unsigned int len = min (v.len, 0x00FF);
164 return *this << uint8 (len) << data (v.ptr, len);
165}
166
167packet &packet::operator <<(const data16 &v)
168{
169 unsigned int len = min (v.len, 0xFFFF);
170 return *this << uint16 (len) << data (v.ptr, len);
171}
172
173packet &packet::operator <<(const char *v)
174{
175 return *this << data (v, strlen (v ? v : 0));
176}
177
178void
179packet::printf (const char *format, ...)
180{
181 int size = room ();
182
183 va_list ap;
184 va_start (ap, format);
185 int len = vsnprintf ((char *)cur, size, format, ap);
186 va_end (ap);
187
188 if (len >= size)
189 return reset ();
190
191 cur += len;
192} 151}
193 152
194/****************************************************************************** 153/******************************************************************************
195 * 154 *
196 * Start of read routines. 155 * Start of read routines.
197 * 156 *
198 ******************************************************************************/ 157 ******************************************************************************/
199 158
200int 159int
201client_socket::read_packet () 160client::next_packet ()
202{ 161{
203 for (;;)
204 {
205 if (inbuf_len >= 2) 162 if (inbuf_len >= 2)
206 { 163 {
207 unsigned int pkt_len = (inbuf [0] << 8) | inbuf [1]; 164 int pkt_len = (inbuf [0] << 8) | inbuf [1];
208 165
209 if (inbuf_len >= 2 + pkt_len) 166 if (inbuf_len >= 2 + pkt_len)
210 return pkt_len + 2; 167 return 2 + pkt_len;
168
169 if (inbuf_len == sizeof (inbuf))
211 } 170 {
171 send_packet_printf ("drawinfo %d input buffer overflow - closing connection.", NDI_RED);
172 destroy ();
173 return -1;
174 }
175 }
176
177 return 0;
178}
179
180void
181client::skip_packet (int len)
182{
183 inbuf_len -= len;
184 memmove (inbuf, inbuf + len, inbuf_len);
185}
186
187/*****************************************************************************
188 * Start of command dispatch area.
189 * The commands here are protocol commands.
190 ****************************************************************************/
191
192// SocketCommand, PlayingCommand, should not exist with those ugly casts
193#define SC(cb) (void *)static_cast<void (*)(char *, int, client *)>(cb),
194#define PC(cb) (void *)static_cast<void (*)(char *, int, player *)>(cb), PF_PLAYER |
195
196/**
197 * Dispatch table for the server.
198 */
199static struct packet_type packets[] = {
200 {"ncom", PC(NewPlayerCmd) PF_PLAYING | PF_COMMAND6 },
201 {"command", PC(PlayerCmd) PF_PLAYING | PF_COMMAND0 },
202
203 {"examine", PC(ExamineCmd) PF_PLAYING },
204 {"ex", PC(ExCmd) PF_PLAYING },
205 {"apply", PC(ApplyCmd) PF_PLAYING },
206 {"lookat", PC(LookAt) PF_PLAYING },
207 {"lock", PC(LockItem) PF_PLAYING },
208 {"mark", PC(MarkItem) PF_PLAYING },
209 {"move", PC(MoveCmd) PF_PLAYING },
210 {"ext", PC(ExtCmd) 0 }, // CF+
211 {"mapredraw", PC(MapRedrawCmd) 0 },
212 {"mapinfo", PC(MapInfoCmd) 0 }, // CF+
213
214 {"reply", SC(ReplyCmd) 0 },
215 {"exti", SC(ExtiCmd) 0 }, // CF+
216 {"addme", SC(AddMeCmd) 0 },
217 {"askface", SC(AskFaceCmd) 0 },
218 {"requestinfo", SC(RequestInfo) 0 },
219 {"setfacemode", SC(SetFaceMode) 0 },
220 {"setsound", SC(SetSound) 0 },
221 {"setup", SC(SetUp) 0 },
222 {"version", SC(VersionCmd) 0 },
223 {"toggleextendedinfos", SC(ToggleExtendedInfos) 0 }, /*Added: tchize */
224 {"toggleextendedtext", SC(ToggleExtendedText) 0 }, /*Added: tchize */
225 {"asksmooth", SC(AskSmooth) 0 }, /*Added: tchize (smoothing technologies) */
226};
227
228bool
229client::may_execute (const packet_type *pkt) const
230{
231 return (!(pkt->flags & PF_PLAYER) || pl)
232 && (!(pkt->flags & PF_PLAYING) || state == ST_PLAYING);
233}
234
235// HACK: some commands currently should be executed
236// even when the player is frozen. this hack detects
237// those commands. it should be folded into may_execute,
238// but kept seperate to emphasise the hack aspect, i.e.
239// do it better, then remove.
240static bool
241always_immediate (const client *ns, const packet_type *pkt, const char *data, int len)
242{
243 if (!(pkt->flags & (PF_COMMAND0 | PF_COMMAND6)))
244 return false;
245
246 if (!ns->pl || !ns->pl->ob || !ns->pl->ob->map)
247 return false;
248
249 if (pkt->flags & PF_COMMAND6)
250 {
251 data += 6;
252 len -= 6;
253 }
254
255 if (len > 4 && !strncmp (data, "say " , 4))
256 return true;
257 if (len > 5 && !strncmp (data, "chat ", 5))
258 return true;
259
260 return false;
261}
262
263void
264client::execute (const packet_type *pkt, char *data, int datalen)
265{
266 if (may_execute (pkt) || always_immediate (this, pkt, data, datalen))
267 {
268 //TODO: only one format
269 if (pkt->flags & PF_PLAYER)
270 ((void (*)(char *, int, player *))pkt->cb)((char *)data, datalen, pl);
271 else
272 ((void (*)(char *, int, client *))pkt->cb)((char *)data, datalen, this);
273 }
274 else
275 send_packet_printf ("drawinfo %d ERROR: you cannot execute '%s' now.", NDI_RED, pkt->name);
276}
277
278bool
279client::handle_packet ()
280{
281 int pkt_len = next_packet ();
282
283 if (!pkt_len)
284 return false;
285 else if (pkt_len < 0)
286 {
287 LOG (llevError, "read error on player %s\n",
288 pl && pl->ob ? &pl->ob->name : "[anonymous]");
289 destroy ();
290 return false;
291 }
292
293 inbuf [pkt_len] = 0; /* Terminate buffer - useful for string data */
294
295 /* First, break out beginning word. There are at least
296 * a few commands that do not have any paremeters. If
297 * we get such a command, don't worry about trying
298 * to break it up.
299 */
300 int datalen;
301 char *data = strchr ((char *)inbuf + 2, ' ');
302
303 if (data)
304 {
305 *data++ = 0;
306 datalen = pkt_len - (data - (char *)inbuf);
307 }
308 else
309 {
310 data = (char *)inbuf + 2; // better read garbage than segfault
311 datalen = 0;
312 }
313
314 for (packet_type *pkt = packets; pkt < packets + (sizeof (packets) / sizeof (packets[0])); ++pkt)
315 if (!strcmp ((char *)inbuf + 2, pkt->name))
316 {
317 if (pkt->flags & PF_PLAYER && !always_immediate (this, pkt, data, datalen))
318 queue_command (pkt, data, datalen);
319 else
320 execute (pkt, data, datalen);
321
322 goto next_packet;
323 }
324
325 // If we get here, we didn't find a valid command.
326 send_packet_printf ("drawinfo %d ERROR: command '%s' not supported.", NDI_RED, (char *)inbuf + 2);
327next_packet:
328 skip_packet (pkt_len);
329
330 // input buffer has space again
331 socket_ev.poll (socket_ev.poll () | PE_R);
332
333 return true;
334}
335
336// callback called when socket is either readable or writable
337void
338client::socket_cb (iow &w, int got)
339{
340 //TODO remove when we have better socket cleanup logic
341 if (destroyed ())
342 {
343 socket_ev.poll (0);
344 return;
345 }
346
347 if (got & PE_W)
348 {
349 write_outputbuffer ();
350
351 if (!outputbuffer.len)
352 socket_ev.poll (socket_ev.poll () & ~PE_W);
353 }
354
355 if (got & PE_R)
356 {
357 //TODO: rate-limit tcp connection in better ways, important
212 358
213 int amount = sizeof (inbuf) - inbuf_len; 359 int amount = sizeof (inbuf) - inbuf_len;
214 360
215 if (amount <= 0) 361 if (!amount)
216 { 362 {
217 LOG (llevError, "packet too large");//TODO 363 // input buffer full
364 socket_ev.poll (socket_ev.poll () & ~PE_R);
218 return -1; 365 return;
219 } 366 }
220 367
221 amount = read (fd, inbuf + inbuf_len, amount); 368 amount = read (fd, inbuf + inbuf_len, amount);
222 369
223 if (!amount) 370 if (!amount)
224 { 371 {
225 status = Ns_Dead; 372 destroy ();
226 return -1; 373 return;
227 } 374 }
228 else if (amount < 0) 375 else if (amount < 0)
229 { 376 {
230 if (errno != EAGAIN && errno != EINTR) 377 if (errno != EAGAIN && errno != EINTR)
231 { 378 {
232 LOG (llevError, "read error: %s\n", strerror (errno)); 379 LOG (llevError, "read error: %s\n", strerror (errno));
380 destroy ();
233 return -1; 381 return;
234 } 382 }
235 383
236 return 0; 384 // should not be here, normally
385 }
386 else
237 } 387 {
238
239 inbuf_len += amount; 388 inbuf_len += amount;
240 389
241 cst_tot.ibytes += amount; 390 cmd_ev.start ();
242 cst_lst.ibytes += amount; 391 }
243 } 392 }
244} 393}
245 394
395// called whenever we have additional commands to process
246void 396void
247client_socket::skip_packet (int len) 397client::cmd_cb (iw &w)
248{ 398{
249 inbuf_len -= len; 399 if (handle_packet ())
250 memmove (inbuf, inbuf + len, inbuf_len); 400 w.start ();
401 else
402 flush ();
251} 403}
252 404
253/******************************************************************************* 405/*******************************************************************************
254 * 406 *
255 * Start of write related routines. 407 * Start of write related routines.
… …
261 * 413 *
262 * ns is the socket we are adding the data to, buf is the start of the 414 * 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. 415 * data, and len is the number of bytes to add.
264 */ 416 */
265void 417void
266client_socket::send (void *buf_, int len) 418client::send (void *buf_, int len)
267{ 419{
268 char *buf = (char *)buf_; 420 char *buf = (char *)buf_;
269 char *pos = buf;
270 int amt = 0;
271 421
272 if (status == Ns_Dead || !buf) 422 if (destroyed () || !buf)
273 {
274 LOG (llevDebug, "Write_To_Socket called with dead socket\n");
275 return; 423 return;
276 }
277 424
278 if ((len + outputbuffer.len) > SOCKETBUFSIZE) 425 if (len + outputbuffer.len > SOCKETBUFSIZE)
279 { 426 {
280 LOG (llevDebug, "Socket on fd %d has overrun internal buffer - marking as dead\n", fd); 427 LOG (llevDebug, "socket on fd %d has overrun internal buffer - marking as dead\n", fd);
281 status = Ns_Dead; 428 // shutdown the socket, this is safer than destroying it immediately
429 // as lots of code in the callchain might still access the map etc.
430 shutdown (fd, SHUT_RDWR);
282 return; 431 return;
283 } 432 }
284 433
285 int avail, end; 434 int avail, end;
286 435
… …
304 } 453 }
305 454
306 outputbuffer.len += len; 455 outputbuffer.len += len;
307} 456}
308 457
309void
310client_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/** 458/**
319 * Takes a string of data, and writes it out to the socket. A very handy 459 * Takes a string of data, and writes it out to the socket. A very handy
320 * shortcut function. 460 * shortcut function.
321 */ 461 */
322void 462void
323client_socket::send_packet (packet &sl) 463client::send_packet (packet &sl)
324{ 464{
325 if (status == Ns_Dead) 465 if (destroyed ())
326 return; 466 return;
327 467
328 if (sl.length () >= MAXSOCKBUF) 468 if (sl.length () >= MAXSOCKBUF)
329 { 469 {
330 LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ()); 470 LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ());
… …
344 484
345 send (sl.buf_, sl.length () + sl.hdrlen); 485 send (sl.buf_, sl.length () + sl.hdrlen);
346} 486}
347 487
348void 488void
349client_socket::send_packet (const char *buf, int len) 489client::send_packet (const char *buf, int len)
350{ 490{
351 packet sl; 491 packet sl;
352 492
353 sl << data (buf, len); 493 sl << data (buf, len);
354 send_packet (sl); 494 send_packet (sl);
355} 495}
356 496
357void 497void
358client_socket::send_packet (const char *buf) 498client::send_packet (const char *buf)
359{ 499{
360 send_packet (buf, strlen (buf)); 500 send_packet (buf, strlen (buf));
361} 501}
362 502
503void
504client::send_packet_printf (const char *format, ...)
505{
506 packet sl;
507
508 va_list ap;
509 va_start (ap, format);
510 sl.vprintf (format, ap);
511 va_end (ap);
512
513 send_packet (sl);
514}
515
516void
517client::send_drawinfo (const char *msg, int flags)
518{
519 send_packet_printf ("drawinfo %d %s", flags, msg);
520}
521
522void
523client::send_msg (int color, const char *type, const char *msg)
524{
525 if (can_msg)
526 send_packet_printf ("msg %d %s %s", color, type, msg);
527 else if (color < 0)
528 return; // client cannot handle this
529 else if (strchr (msg, '<') || strchr (msg, '&'))
530 {
531 //TODO: should escape/modify to old syntax
532 send_packet_printf ("drawinfo %d %s", color, msg);
533 }
534 else
535 send_packet_printf ("drawinfo %d %s", color, msg);
536}
537
363/****************************************************************************** 538/***********************************************************************
364 * 539 *
365 * statistics logging functions. 540 * packet functions/utilities
366 * 541 *
367 ******************************************************************************/ 542 **********************************************************************/
368 543
369#ifdef CS_LOGSTATS 544packet::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 */
374CS_Stats cst_tot, cst_lst;
375
376/**
377 * Writes out the gathered stats. We clear cst_lst.
378 */
379void
380write_cs_stats (void)
381{ 545{
382 time_t now = time (NULL); 546 reset ();
383 547
384 /* If no connections recently, don't both to log anything */ 548 int len = strlen (name);
385 if (cst_lst.ibytes == 0 && cst_lst.obytes == 0) 549 memcpy (cur, name, len); cur += len;
386 return; 550 *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} 551}
396#endif
397 552
553packet &packet::operator <<(const ber32 v)
554{
555 enum { maxlen = 32 / 7 + 1};
556 uint8 buf[maxlen];
557 uint8 *p = buf + maxlen;
558 uint32 val = v.val;
559
560 *--p = val & 0x7F;
561
562 while (val > 0x7F)
563 {
564 val >>= 7;
565 *--p = (val & 0x7F) | 0x80;
566 }
567
568 return *this << data (p, buf + maxlen - p);
569}
570
571packet &packet::operator <<(const data &v)
572{
573 if (room () < v.len)
574 reset ();
575 else
576 {
577 if (v.len)
578 {
579 memcpy (cur, v.ptr, v.len);
580 cur += v.len;
581 }
582 }
583
584 return *this;
585}
586
587packet &packet::operator <<(const data8 &v)
588{
589 unsigned int len = min (v.len, 0x00FF);
590 return *this << uint8 (len) << data (v.ptr, len);
591}
592
593packet &packet::operator <<(const data16 &v)
594{
595 unsigned int len = min (v.len, 0xFFFF);
596 return *this << uint16 (len) << data (v.ptr, len);
597}
598
599packet &packet::operator <<(const char *v)
600{
601 return *this << data (v, strlen (v ? v : 0));
602}
603
604void
605packet::vprintf (const char *format, va_list ap)
606{
607 int size = room ();
608
609 int len = vsnprintf ((char *)cur, size, format, ap);
610
611 if (len >= size)
612 return reset ();
613
614 cur += len;
615}
616

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