[ViewVC] Diff of: cvs/deliantra/server/socket/lowlevel.C

Comparing deliantra/server/socket/lowlevel.C (file contents):
Revision 1.22 by root, Fri Dec 15 19:59:20 2006 UTC vs.
Revision 1.62 by root, Thu Nov 8 19:43:30 2007 UTC

…		…
1	/*	1	/*
2	CrossFire, A Multiplayer game for X-windows	2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3		3	*
		4	* Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Deliantra 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	* Deliantra 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.
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	*	19	*
27	* \date 2003-12-02	20	* The authors can be reached via e-mail to <support@deliantra.net>
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	*/	21	*/
34		22
35	using namespace std;	23	using namespace std;
36		24
37	#include <global.h>	25	#include <global.h>
38	#include <sproto.h>	26	#include <sproto.h>
39	#include <cstdarg>	27	#include <cstdarg>
40		28
41	#ifdef __linux__	29	#if HAVE_TCP_INFO
42	# include <sys/types.h>	30	# include <sys/types.h>
43	# include <sys/socket.h>	31	# include <sys/socket.h>
44	# include <netinet/in.h>	32	# include <netinet/in.h>
45	# define TCP_HZ 1000 // sorry...
46	# include <netinet/tcp.h>	33	# include <netinet/tcp.h>
47	#endif	34	#endif
48		35
49	// use a really low timeout, as it doesn't cost any bandwidth, and you can	36	// force a packet when idle for more than this many seconds,
50	// easily die in 20 seconds...	37	// forcing an ack regularly.
51	#define SOCKET_TIMEOUT1 10	38	#define IDLE_PING 2.
52	#define SOCKET_TIMEOUT2 20
53		39
54	void	40	void
55	client::flush ()	41	client::flush ()
56	{	42	{
57	#ifdef __linux__	43	if (destroyed ())
58	// check time of last ack, and, if too old, kill connection	44	return;
59	struct tcp_info tcpi;
60	socklen_t len = sizeof (tcpi);
61
62	if (!getsockopt (fd, IPPROTO_TCP, TCP_INFO, &tcpi, &len) && len == sizeof (tcpi))
63	{
64	unsigned int diff = tcpi.tcpi_last_ack_recv - tcpi.tcpi_last_data_sent;
65
66	rtt = tcpi.tcpi_rtt;
67	rttvar = tcpi.tcpi_rttvar;
68
69	if (tcpi.tcpi_unacked && SOCKET_TIMEOUT1 * TCP_HZ < diff && diff < 0x80000000UL // ack delayed for 20s
70	&& SOCKET_TIMEOUT2 * TCP_HZ < tcpi.tcpi_last_data_sent) // no data sent for 10s
71	{
72	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);
74	status = Ns_Dead;
75	}
76	}
77	#endif
78		45
79	/**	46	/**
80	* Writes data to socket.	47	* Writes data to socket.
81	*	48	*
82	* When the socket is clear to write, and we have backlogged data, this	49	* When the socket is clear to write, and we have backlogged data, this
83	* is called to write it out.	50	* is called to write it out.
84	*/	51	*/
85		52
86	if (!outputbuffer.len \|\| socket_ev.poll () & PE_W)	53	// write a nop to the socket at least every IDLE_NOP seconds.
		54	if (!outputbuffer.len)
		55	{
		56	if (last_send + IDLE_PING <= NOW && pl && pl->active)
		57	{
		58	// this is a bit ugly, but map1/map1a seem to be the only
		59	// nop'able commands and they are quite small.
		60	packet sl (mapmode == Map1Cmd ? "map1" : "map1a");
		61	send_packet (sl);
		62	}
		63	else
		64	return;
		65	}
		66
		67	if (socket_ev.poll () & PE_W)
87	return;	68	return;
88		69
		70	last_send = NOW;
89	write_outputbuffer ();	71	write_outputbuffer ();
90	}	72	}
91		73
92	void	74	void
93	client::write_outputbuffer ()	75	client::write_outputbuffer ()
103	/* wrap back to start of buffer */	85	/* wrap back to start of buffer */
104	if (outputbuffer.start == SOCKETBUFSIZE)	86	if (outputbuffer.start == SOCKETBUFSIZE)
105	outputbuffer.start = 0;	87	outputbuffer.start = 0;
106		88
107	outputbuffer.len -= res;	89	outputbuffer.len -= res;
108	#ifdef CS_LOGSTATS
109	cst_tot.obytes += res;
110	cst_lst.obytes += res;
111	#endif
112	}	90	}
113	else if (res == 0)	91	else if (res == 0)
114	{	92	{
115	LOG (llevError, "socket write failed, connection closed.\n");	93	LOG (llevError, "socket write failed, connection closed.\n");
116	status = Ns_Dead;	94	destroy ();
117	return;	95	return;
118	}	96	}
119	else if (errno == EINTR)	97	else if (errno == EINTR)
120	{	98	{
121	// just retry	99	// just retry
…		…
128	return;	106	return;
129	}	107	}
130	else	108	else
131	{	109	{
132	LOG (llevError, "socket write failed: %s\n", strerror (errno));	110	LOG (llevError, "socket write failed: %s\n", strerror (errno));
133	status = Ns_Dead;	111	destroy ();
134	return;	112	return;
135	}	113	}
136	}	114	}
137		115
138	socket_ev.poll (socket_ev.poll () & ~PE_W);	116	socket_ev.poll (socket_ev.poll () & ~PE_W);
139	}	117	}
140		118
		119	/******************************************************************************
		120	*
		121	* Start of read routines.
		122	*
		123	******************************************************************************/
		124
		125	int
		126	client::next_packet ()
		127	{
		128	if (inbuf_len >= 2)
		129	{
		130	int pkt_len = (inbuf [0] << 8) \| inbuf [1];
		131
		132	if (inbuf_len >= 2 + pkt_len)
		133	return 2 + pkt_len;
		134
		135	if (inbuf_len == sizeof (inbuf))
		136	{
		137	send_packet_printf ("drawinfo %d input buffer overflow - closing connection.", NDI_RED \| NDI_REPLY);
		138	destroy ();
		139	return -1;
		140	}
		141	}
		142
		143	return 0;
		144	}
		145
		146	void
		147	client::skip_packet (int len)
		148	{
		149	inbuf_len -= len;
		150	memmove (inbuf, inbuf + len, inbuf_len);
		151	}
		152
141	/***********************************************************************	153	/*****************************************************************************
142	*	154	* Start of command dispatch area.
143	* packet functions/utilities	155	* The commands here are protocol commands.
144	*
145	**********************************************************************/	156	****************************************************************************/
146		157
147	packet &packet::operator <<(const data &v)	158	// SocketCommand, PlayingCommand, should not exist with those ugly casts
		159	#define SC(cb) (void )static_cast<void ()(char , int, client )>(cb),
		160	#define PC(cb) (void )static_cast<void ()(char , int, player )>(cb), PF_PLAYER \|
		161
		162	/**
		163	* Dispatch table for the server.
		164	*/
		165	static struct packet_type packets[] = {
		166	{"ncom", PC(NewPlayerCmd) PF_PLAYING \| PF_COMMAND6 },
		167	{"command", PC(PlayerCmd) PF_PLAYING \| PF_COMMAND0 },
		168
		169	{"examine", PC(ExamineCmd) PF_PLAYING },
		170	{"ex", PC(ExCmd) PF_PLAYING },
		171	{"apply", PC(ApplyCmd) PF_PLAYING },
		172	{"lookat", PC(LookAt) PF_PLAYING },
		173	{"lock", PC(LockItem) PF_PLAYING },
		174	{"mark", PC(MarkItem) PF_PLAYING },
		175	{"move", PC(MoveCmd) PF_PLAYING },
		176	{"ext", PC(ExtCmd) 0 }, // CF+
		177	{"mapredraw", PC(MapRedrawCmd) 0 },
		178	{"mapinfo", PC(MapInfoCmd) 0 }, // CF+
		179
		180	{"reply", SC(ReplyCmd) 0 },
		181	{"exti", SC(ExtiCmd) 0 }, // CF+
		182	{"addme", SC(AddMeCmd) 0 },
		183	{"askface", SC(AskFaceCmd) 0 },
		184	{"requestinfo", SC(RequestInfo) 0 },
		185	{"setfacemode", SC(SetFaceMode) 0 },
		186	{"setsound", SC(SetSound) 0 },
		187	{"setup", SC(SetUp) 0 },
		188	{"version", SC(VersionCmd) 0 },
		189	{"toggleextendedinfos", SC(ToggleExtendedInfos) 0 }, /Added: tchize /
		190	{"toggleextendedtext", SC(ToggleExtendedText) 0 }, /Added: tchize /
		191	{"asksmooth", SC(AskSmooth) 0 }, /Added: tchize (smoothing technologies) /
		192	};
		193
		194	bool
		195	client::may_execute (const packet_type *pkt) const
148	{	196	{
149	if (room () < v.len)	197	return (!(pkt->flags & PF_PLAYER) \|\| pl)
150	reset ();	198	&& (!(pkt->flags & PF_PLAYING) \|\| state == ST_PLAYING);
		199	}
		200
		201	// HACK: some commands currently should be executed
		202	// even when the player is frozen. this hack detects
		203	// those commands. it should be folded into may_execute,
		204	// but kept seperate to emphasise the hack aspect, i.e.
		205	// do it better, then remove.
		206	static bool
		207	always_immediate (const client ns, const packet_type pkt, const char *data, int len)
		208	{
		209	if (!(pkt->flags & (PF_COMMAND0 \| PF_COMMAND6)))
		210	return false;
		211
		212	if (!ns->pl \|\| !ns->pl->ob \|\| !ns->pl->ob->map)
		213	return false;
		214
		215	if (pkt->flags & PF_COMMAND6)
		216	{
		217	data += 6;
		218	len -= 6;
		219	}
		220
		221	if (len > 4 && data [3] == ' ' && !strncmp (data, "say " , 4)) return true;
		222	if (len > 5 && data [4] == ' ' && !strncmp (data, "chat " , 5)) return true;
		223	if (len > 6 && data [5] == ' ' && !strncmp (data, "shout ", 6)) return true;
		224
		225	if (len == 7 && !strcmp (data, "suicide")) return true;
		226
		227	return false;
		228	}
		229
		230	void
		231	client::execute (const packet_type pkt, char data, int datalen)
		232	{
		233	if (may_execute (pkt) \|\| always_immediate (this, pkt, data, datalen))
		234	{
		235	//TODO: only one format
		236	if (pkt->flags & PF_PLAYER)
		237	((void ()(char , int, player ))pkt->cb)((char )data, datalen, pl);
		238	else
		239	((void ()(char , int, client ))pkt->cb)((char )data, datalen, this);
		240	}
151	else	241	else
		242	send_packet_printf ("drawinfo %d ERROR: you cannot execute '%s' now.", NDI_RED \| NDI_REPLY, pkt->name);
		243	}
		244
		245	bool
		246	client::handle_packet ()
		247	{
		248	int pkt_len = next_packet ();
		249
		250	if (!pkt_len)
		251	return false;
		252	else if (pkt_len < 0)
		253	{
		254	LOG (llevError, "read error on player %s\n",
		255	pl && pl->ob ? &pl->ob->name : "[anonymous]");
		256	destroy ();
		257	return false;
152	{	258	}
153	if (v.len)	259
		260	inbuf [pkt_len] = 0; /* Terminate buffer - useful for string data */
		261
		262	/* First, break out beginning word. There are at least
		263	* a few commands that do not have any paremeters. If
		264	* we get such a command, don't worry about trying
		265	* to break it up.
		266	*/
		267	int datalen;
		268	char data = strchr ((char )inbuf + 2, ' ');
		269
		270	if (data)
		271	{
		272	*data++ = 0;
		273	datalen = pkt_len - (data - (char *)inbuf);
		274	}
		275	else
		276	{
		277	data = (char *)inbuf + 2; // better read garbage than segfault
		278	datalen = 0;
		279	}
		280
		281	for (packet_type *pkt = packets; pkt < packets + (sizeof (packets) / sizeof (packets[0])); ++pkt)
		282	if (!strcmp ((char *)inbuf + 2, pkt->name))
154	{	283	{
155	memcpy (cur, v.ptr, v.len);	284	if (pkt->flags & PF_PLAYER && !always_immediate (this, pkt, data, datalen))
156	cur += v.len;	285	queue_command (pkt, data, datalen);
		286	else
		287	execute (pkt, data, datalen);
		288
		289	goto next_packet;
157	}	290	}
		291
		292	// If we get here, we didn't find a valid command.
		293	send_packet_printf ("drawinfo %d ERROR: command '%s' not supported.", NDI_RED \| NDI_REPLY, (char *)inbuf + 2);
		294	next_packet:
		295	skip_packet (pkt_len);
		296
		297	// input buffer has space again
		298	socket_ev.poll (socket_ev.poll () \| PE_R);
		299
		300	return true;
		301	}
		302
		303	// callback called when socket is either readable or writable
		304	void
		305	client::socket_cb (iow &w, int got)
		306	{
		307	//TODO remove when we have better socket cleanup logic
		308	if (destroyed ())
158	}	309	{
159		310	socket_ev.poll (0);
160	return *this;	311	return;
161	}
162
163	packet &packet::operator <<(const data8 &v)
164	{
165	unsigned int len = min (v.len, 0x00FF);
166	return *this << uint8 (len) << data (v.ptr, len);
167	}
168
169	packet &packet::operator <<(const data16 &v)
170	{
171	unsigned int len = min (v.len, 0xFFFF);
172	return *this << uint16 (len) << data (v.ptr, len);
173	}
174
175	packet &packet::operator <<(const char *v)
176	{
177	return *this << data (v, strlen (v ? v : 0));
178	}
179
180	void
181	packet::printf (const char *format, ...)
182	{
183	int size = room ();
184
185	va_list ap;
186	va_start (ap, format);
187	int len = vsnprintf ((char *)cur, size, format, ap);
188	va_end (ap);
189
190	if (len >= size)
191	return reset ();
192
193	cur += len;
194	}
195
196	/******************************************************************************
197	*
198	* Start of read routines.
199	*
200	******************************************************************************/
201
202	int
203	client::read_packet ()
204	{
205	for (;;)
206	{	312	}
207	if (inbuf_len >= 2)
208	{
209	unsigned int pkt_len = (inbuf [0] << 8) \| inbuf [1];
210		313
211	if (inbuf_len >= 2 + pkt_len)	314	if (got & PE_W)
212	return pkt_len + 2;	315	{
213	}	316	write_outputbuffer ();
		317
		318	if (!outputbuffer.len)
		319	socket_ev.poll (socket_ev.poll () & ~PE_W);
		320	}
		321
		322	if (got & PE_R)
		323	{
		324	//TODO: rate-limit tcp connection in better ways, important
214		325
215	int amount = sizeof (inbuf) - inbuf_len;	326	int amount = sizeof (inbuf) - inbuf_len;
216		327
217	if (amount <= 0)	328	if (!amount)
218	{	329	{
219	LOG (llevError, "packet too large");//TODO	330	// input buffer full
		331	socket_ev.poll (socket_ev.poll () & ~PE_R);
220	return -1;	332	return;
221	}	333	}
222		334
223	amount = read (fd, inbuf + inbuf_len, amount);	335	amount = read (fd, inbuf + inbuf_len, amount);
224		336
225	if (!amount)	337	if (!amount)
226	{	338	{
227	status = Ns_Dead;	339	destroy ();
228	return -1;	340	return;
229	}	341	}
230	else if (amount < 0)	342	else if (amount < 0)
231	{	343	{
232	if (errno != EAGAIN && errno != EINTR)	344	if (errno != EAGAIN && errno != EINTR)
233	{	345	{
234	LOG (llevError, "read error: %s\n", strerror (errno));	346	LOG (llevError, "read error: %s\n", strerror (errno));
		347	destroy ();
235	return -1;	348	return;
236	}	349	}
237		350
238	return 0;	351	// should not be here, normally
		352	}
		353	else
239	}	354	{
240
241	inbuf_len += amount;	355	inbuf_len += amount;
242		356
243	cst_tot.ibytes += amount;	357	if (handle_packet ())
244	cst_lst.ibytes += amount;	358	{
245	}	359	while (handle_packet ())
246	}	360	;
247		361
248	void	362	flush ();
249	client::skip_packet (int len)	363	}
250	{	364	}
251	inbuf_len -= len;	365	}
252	memmove (inbuf, inbuf + len, inbuf_len);
253	}	366	}
254		367
255	/*******************************************************************************	368	/*******************************************************************************
256	*	369	*
257	* Start of write related routines.	370	* Start of write related routines.
…		…
266	*/	379	*/
267	void	380	void
268	client::send (void *buf_, int len)	381	client::send (void *buf_, int len)
269	{	382	{
270	char buf = (char )buf_;	383	char buf = (char )buf_;
271	char *pos = buf;
272	int amt = 0;
273		384
274	if (status == Ns_Dead \|\| !buf)	385	if (destroyed () \|\| !buf)
275	{
276	LOG (llevDebug, "Write_To_Socket called with dead socket\n");
277	return;	386	return;
278	}
279		387
280	if ((len + outputbuffer.len) > SOCKETBUFSIZE)	388	if (len + outputbuffer.len > SOCKETBUFSIZE)
281	{	389	{
282	LOG (llevDebug, "Socket on fd %d has overrun internal buffer - marking as dead\n", fd);	390	LOG (llevDebug, "socket on fd %d has overrun internal buffer - marking as dead\n", fd);
283	status = Ns_Dead;	391	// shutdown the socket, this is safer than destroying it immediately
		392	// as lots of code in the callchain might still access the map etc.
		393	shutdown (fd, SHUT_RDWR);
284	return;	394	return;
285	}	395	}
286		396
287	int avail, end;	397	int avail, end;
288		398
…		…
306	}	416	}
307		417
308	outputbuffer.len += len;	418	outputbuffer.len += len;
309	}	419	}
310		420
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	/**	421	/**
321	* Takes a string of data, and writes it out to the socket. A very handy	422	* Takes a string of data, and writes it out to the socket. A very handy
322	* shortcut function.	423	* shortcut function.
323	*/	424	*/
324	void	425	void
325	client::send_packet (packet &sl)	426	client::send_packet (packet &sl)
326	{	427	{
327	if (status == Ns_Dead)	428	if (destroyed ())
328	return;	429	return;
329		430
330	if (sl.length () >= MAXSOCKBUF)	431	if (sl.length () > MAXSOCKBUF)
331	{	432	{
332	LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ());	433	LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ());
333	/* Almost certainly we've overflowed a buffer, so quit now to make	434	/* Almost certainly we've overflowed a buffer, so quit now to make
334	* it easier to debug.	435	* it easier to debug.
335	*/	436	*/
…		…
360	client::send_packet (const char *buf)	461	client::send_packet (const char *buf)
361	{	462	{
362	send_packet (buf, strlen (buf));	463	send_packet (buf, strlen (buf));
363	}	464	}
364		465
		466	void
		467	client::send_packet_printf (const char *format, ...)
		468	{
		469	packet sl;
		470
		471	va_list ap;
		472	va_start (ap, format);
		473	sl.vprintf (format, ap);
		474	va_end (ap);
		475
		476	send_packet (sl);
		477	}
		478
		479	// returns true when the message needs special (read: perl) treatment
		480	static bool
		481	msg_is_special (const char *msg)
		482	{
		483	return msg [strcspn (msg, "<[&\n")];
		484	}
		485
		486	void
		487	client::send_msg (int color, const char type, const char msg)
		488	{
		489	if (!msg \|\| !type) // it can happen (for example, missing attack messages cause this)
		490	{
		491	LOG (logBacktrace \| llevError, "send_msg(%d,%p,%p) called with NULL msg or type.\n", color, type, msg);
		492	return;
		493	}
		494
		495	int len = strlen (msg);
		496
		497	if (msg_is_special (msg) \|\| (type [0] == 'c' && type [1] == '/') \|\| len > (MAXSOCKBUF - 128))
		498	cfperl_send_msg (this, color, type, msg);
		499	else if (can_msg)
		500	send_packet_printf ("msg %d %s %s", color & NDI_CLIENT_MASK, type, msg);
		501	else if (color < 0)
		502	return; // client cannot handle this
		503	else
		504	send_packet_printf ("drawinfo %d %s", color & NDI_COLOR_MASK, msg);
		505	}
		506
		507	void
		508	client::send_drawinfo (const char *msg, int flags)
		509	{
		510	send_msg (flags, "log", msg);
		511	}
		512
365	/******************************************************************************	513	/***********************************************************************
366	*	514	*
367	* statistics logging functions.	515	* packet functions/utilities
368	*	516	*
369	******************************************************************************/	517	**********************************************************************/
370		518
371	#ifdef CS_LOGSTATS	519	packet::packet (const char *name)
372
373	/* cst_tot is for the life of the server, cst_last is for the last series of
374	* stats
375	*/
376	CS_Stats cst_tot, cst_lst;
377
378	/**
379	* Writes out the gathered stats. We clear cst_lst.
380	*/
381	void
382	write_cs_stats (void)
383	{	520	{
384	time_t now = time (NULL);	521	reset ();
385		522
386	/* If no connections recently, don't both to log anything */	523	int len = strlen (name);
387	if (cst_lst.ibytes == 0 && cst_lst.obytes == 0)	524	memcpy (cur, name, len); cur += len;
388	return;	525	*cur++ = ' ';
389
390	/* CSSTAT is put in so scripts can easily find the line */
391	LOG (llevInfo, "CSSTAT: %.16s tot %d %d %d %d inc %d %d %d %d\n",
392	ctime (&now), cst_tot.ibytes, cst_tot.obytes, cst_tot.max_conn,
393	now - cst_tot.time_start, cst_lst.ibytes, cst_lst.obytes, cst_lst.max_conn, now - cst_lst.time_start);
394	cst_lst.ibytes = 0;
395	cst_lst.obytes = 0;
396	cst_lst.time_start = now;
397	}	526	}
398	#endif
399		527
		528	packet &packet::operator <<(const ber32 v)
		529	{
		530	enum { maxlen = 32 / 7 + 1};
		531	uint8 buf[maxlen];
		532	uint8 *p = buf + maxlen;
		533	uint32 val = v.val;
		534
		535	*--p = val & 0x7F;
		536
		537	while (val > 0x7F)
		538	{
		539	val >>= 7;
		540	*--p = (val & 0x7F) \| 0x80;
		541	}
		542
		543	return *this << data (p, buf + maxlen - p);
		544	}
		545
		546	packet &packet::operator <<(const data &v)
		547	{
		548	if (room () < v.len)
		549	reset ();
		550	else
		551	{
		552	if (v.len)
		553	{
		554	memcpy (cur, v.ptr, v.len);
		555	cur += v.len;
		556	}
		557	}
		558
		559	return *this;
		560	}
		561
		562	packet &packet::operator <<(const data8 &v)
		563	{
		564	unsigned int len = min (v.len, 0x00FF);
		565	return *this << uint8 (len) << data (v.ptr, len);
		566	}
		567
		568	packet &packet::operator <<(const data16 &v)
		569	{
		570	unsigned int len = min (v.len, 0xFFFF);
		571	return *this << uint16 (len) << data (v.ptr, len);
		572	}
		573
		574	packet &packet::operator <<(const char *v)
		575	{
		576	return *this << data (v, strlen (v ? v : 0));
		577	}
		578
		579	void
		580	packet::vprintf (const char *format, va_list ap)
		581	{
		582	int size = room ();
		583
		584	int len = vsnprintf ((char *)cur, size, format, ap);
		585
		586	if (len >= size)
		587	return reset ();
		588
		589	cur += len;
		590	}
		591

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Comparing deliantra/server/socket/lowlevel.C (file contents): Revision 1.22 by root, Fri Dec 15 19:59:20 2006 UTC vs. Revision 1.62 by root, Thu Nov 8 19:43:30 2007 UTC

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Comparing deliantra/server/socket/lowlevel.C (file contents):
Revision 1.22 by root, Fri Dec 15 19:59:20 2006 UTC vs.
Revision 1.62 by root, Thu Nov 8 19:43:30 2007 UTC