[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 1.68 by root, Sat Dec 27 01:25:00 2008 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 (©) 2005,2006,2007,2008 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 () & EV_WRITE)
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
122	}	100	}
123	else if (errno == EAGAIN)	101	else if (errno == EAGAIN)
124	{	102	{
125	// delay till ready	103	// delay till ready
126	socket_ev.poll (socket_ev.poll () \| PE_W);	104	socket_ev.poll (socket_ev.poll () \| EV_WRITE);
127	socket_ev.start ();	105	socket_ev.start ();
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 () & ~EV_WRITE);
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	{"setsound", SC(SetSound) 0 },
		186	{"setup", SC(SetUp) 0 },
		187	{"version", SC(VersionCmd) 0 },
		188	{"toggleextendedtext", SC(ToggleExtendedText) 0 }, /Added: tchize /
		189	};
		190
		191	bool
		192	client::may_execute (const packet_type *pkt) const
148	{	193	{
149	if (room () < v.len)	194	return (!(pkt->flags & PF_PLAYER) \|\| pl)
150	reset ();	195	&& (!(pkt->flags & PF_PLAYING) \|\| state == ST_PLAYING);
		196	}
		197
		198	// HACK: some commands currently should be executed
		199	// even when the player is frozen. this hack detects
		200	// those commands. it should be folded into may_execute,
		201	// but kept seperate to emphasise the hack aspect, i.e.
		202	// do it better, then remove.
		203	static bool
		204	always_immediate (const client ns, const packet_type pkt, const char *data, int len)
		205	{
		206	if (!(pkt->flags & (PF_COMMAND0 \| PF_COMMAND6)))
		207	return false;
		208
		209	if (!ns->pl \|\| !ns->pl->ob \|\| !ns->pl->ob->map)
		210	return false;
		211
		212	if (pkt->flags & PF_COMMAND6)
		213	{
		214	data += 6;
		215	len -= 6;
		216	}
		217
		218	if (len > 4 && data [3] == ' ' && !strncmp (data, "say " , 4)) return true;
		219	if (len > 5 && data [4] == ' ' && !strncmp (data, "chat " , 5)) return true;
		220	if (len > 6 && data [5] == ' ' && !strncmp (data, "shout ", 6)) return true;
		221
		222	if (len == 7 && !strcmp (data, "suicide")) return true;
		223
		224	return false;
		225	}
		226
		227	void
		228	client::execute (const packet_type pkt, char data, int datalen)
		229	{
		230	if (may_execute (pkt) \|\| always_immediate (this, pkt, data, datalen))
		231	{
		232	//TODO: only one format
		233	if (pkt->flags & PF_PLAYER)
		234	((void ()(char , int, player ))pkt->cb)((char )data, datalen, pl);
		235	else
		236	((void ()(char , int, client ))pkt->cb)((char )data, datalen, this);
		237	}
151	else	238	else
		239	send_packet_printf ("drawinfo %d ERROR: you cannot execute '%s' now.", NDI_RED \| NDI_REPLY, pkt->name);
		240	}
		241
		242	bool
		243	client::handle_packet ()
		244	{
		245	int pkt_len = next_packet ();
		246
		247	if (!pkt_len)
		248	return false;
		249	else if (pkt_len < 0)
		250	{
		251	LOG (llevError, "read error on player %s\n",
		252	pl && pl->ob ? &pl->ob->name : "[anonymous]");
		253	destroy ();
		254	return false;
152	{	255	}
153	if (v.len)	256
		257	inbuf [pkt_len] = 0; /* Terminate buffer - useful for string data */
		258
		259	/* First, break out beginning word. There are at least
		260	* a few commands that do not have any paremeters. If
		261	* we get such a command, don't worry about trying
		262	* to break it up.
		263	*/
		264	int datalen;
		265	char data = strchr ((char )inbuf + 2, ' ');
		266
		267	if (data)
		268	{
		269	*data++ = 0;
		270	datalen = pkt_len - (data - (char *)inbuf);
		271	}
		272	else
		273	{
		274	data = (char *)inbuf + 2; // better read garbage than segfault
		275	datalen = 0;
		276	}
		277
		278	for (packet_type *pkt = packets; pkt < packets + (sizeof (packets) / sizeof (packets[0])); ++pkt)
		279	if (!strcmp ((char *)inbuf + 2, pkt->name))
154	{	280	{
155	memcpy (cur, v.ptr, v.len);	281	if (pkt->flags & PF_PLAYER && !always_immediate (this, pkt, data, datalen))
156	cur += v.len;	282	queue_command (pkt, data, datalen);
		283	else
		284	execute (pkt, data, datalen);
		285
		286	goto next_packet;
157	}	287	}
		288
		289	// If we get here, we didn't find a valid command.
		290	send_packet_printf ("drawinfo %d ERROR: command '%s' not supported.", NDI_RED \| NDI_REPLY, (char *)inbuf + 2);
		291	next_packet:
		292	skip_packet (pkt_len);
		293
		294	// input buffer has space again
		295	socket_ev.poll (socket_ev.poll () \| EV_READ);
		296
		297	return true;
		298	}
		299
		300	// callback called when socket is either readable or writable
		301	void
		302	client::socket_cb (iow &w, int revents)
		303	{
		304	//TODO remove when we have better socket cleanup logic
		305	if (destroyed ())
158	}	306	{
159		307	socket_ev.poll (0);
160	return *this;	308	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	{	309	}
207	if (inbuf_len >= 2)
208	{
209	unsigned int pkt_len = (inbuf [0] << 8) \| inbuf [1];
210		310
211	if (inbuf_len >= 2 + pkt_len)	311	if (revents & EV_WRITE)
212	return pkt_len + 2;	312	{
213	}	313	write_outputbuffer ();
		314
		315	if (!outputbuffer.len)
		316	socket_ev.poll (socket_ev.poll () & ~EV_WRITE);
		317	}
		318
		319	if (revents & EV_READ)
		320	{
		321	//TODO: rate-limit tcp connection in better ways, important
214		322
215	int amount = sizeof (inbuf) - inbuf_len;	323	int amount = sizeof (inbuf) - inbuf_len;
216		324
217	if (amount <= 0)	325	if (!amount)
218	{	326	{
219	LOG (llevError, "packet too large");//TODO	327	// input buffer full
		328	socket_ev.poll (socket_ev.poll () & ~EV_READ);
220	return -1;	329	return;
221	}	330	}
222		331
223	amount = read (fd, inbuf + inbuf_len, amount);	332	amount = read (fd, inbuf + inbuf_len, amount);
224		333
225	if (!amount)	334	if (!amount)
226	{	335	{
227	status = Ns_Dead;	336	destroy ();
228	return -1;	337	return;
229	}	338	}
230	else if (amount < 0)	339	else if (amount < 0)
231	{	340	{
232	if (errno != EAGAIN && errno != EINTR)	341	if (errno != EAGAIN && errno != EINTR)
233	{	342	{
234	LOG (llevError, "read error: %s\n", strerror (errno));	343	LOG (llevError, "read error: %s\n", strerror (errno));
		344	destroy ();
235	return -1;	345	return;
236	}	346	}
237		347
238	return 0;	348	// should not be here, normally
		349	}
		350	else
239	}	351	{
240
241	inbuf_len += amount;	352	inbuf_len += amount;
242		353
243	cst_tot.ibytes += amount;	354	if (handle_packet ())
244	cst_lst.ibytes += amount;	355	{
245	}	356	while (handle_packet ())
246	}	357	;
247		358
248	void	359	flush ();
249	client::skip_packet (int len)	360	}
250	{	361	}
251	inbuf_len -= len;	362	}
252	memmove (inbuf, inbuf + len, inbuf_len);
253	}	363	}
254		364
255	/*******************************************************************************	365	/*******************************************************************************
256	*	366	*
257	* Start of write related routines.	367	* Start of write related routines.
…		…
266	*/	376	*/
267	void	377	void
268	client::send (void *buf_, int len)	378	client::send (void *buf_, int len)
269	{	379	{
270	char buf = (char )buf_;	380	char buf = (char )buf_;
271	char *pos = buf;
272	int amt = 0;
273		381
274	if (status == Ns_Dead \|\| !buf)	382	if (destroyed () \|\| !buf)
275	{
276	LOG (llevDebug, "Write_To_Socket called with dead socket\n");
277	return;	383	return;
278	}
279		384
280	if ((len + outputbuffer.len) > SOCKETBUFSIZE)	385	if (len + outputbuffer.len > SOCKETBUFSIZE)
281	{	386	{
282	LOG (llevDebug, "Socket on fd %d has overrun internal buffer - marking as dead\n", fd);	387	LOG (llevDebug, "socket on fd %d has overrun internal buffer - marking as dead\n", fd);
283	status = Ns_Dead;	388	// shutdown the socket, this is safer than destroying it immediately
		389	// as lots of code in the callchain might still access the map etc.
		390	shutdown (fd, SHUT_RDWR);
284	return;	391	return;
285	}	392	}
286		393
287	int avail, end;	394	int avail, end;
288		395
…		…
306	}	413	}
307		414
308	outputbuffer.len += len;	415	outputbuffer.len += len;
309	}	416	}
310		417
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	/**	418	/**
321	* Takes a string of data, and writes it out to the socket. A very handy	419	* Takes a string of data, and writes it out to the socket. A very handy
322	* shortcut function.	420	* shortcut function.
323	*/	421	*/
324	void	422	void
325	client::send_packet (packet &sl)	423	client::send_packet (packet &sl)
326	{	424	{
327	if (status == Ns_Dead)	425	if (destroyed ())
328	return;	426	return;
329		427
330	if (sl.length () >= MAXSOCKBUF)	428	if (sl.length () > MAXSOCKBUF)
331	{	429	{
332	LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ());	430	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	431	/* Almost certainly we've overflowed a buffer, so quit now to make
334	* it easier to debug.	432	* it easier to debug.
335	*/	433	*/
…		…
360	client::send_packet (const char *buf)	458	client::send_packet (const char *buf)
361	{	459	{
362	send_packet (buf, strlen (buf));	460	send_packet (buf, strlen (buf));
363	}	461	}
364		462
		463	void
		464	client::send_packet_printf (const char *format, ...)
		465	{
		466	packet sl;
		467
		468	va_list ap;
		469	va_start (ap, format);
		470	sl.vprintf (format, ap);
		471	va_end (ap);
		472
		473	send_packet (sl);
		474	}
		475
		476	void
		477	client::send_msg (int color, const char type, const char msg)
		478	{
		479	if (!msg \|\| !type) // it can happen (for example, missing attack messages cause this)
		480	{
		481	LOG (logBacktrace \| llevError, "send_msg(%d,%p,%p) called with NULL msg or type.\n", color, type, msg);
		482	return;
		483	}
		484
		485	int len = strlen (msg);
		486
		487	if (!(color & NDI_VERBATIM)
		488	&& (msg_is_special (msg)
		489	\|\| (type [0] == 'c' && type [1] == '/') \|\| len > (MAXSOCKBUF - 128)))
		490	cfperl_send_msg (this, color, type, msg);
		491	else if (can_msg)
		492	send_packet_printf ("msg %d %s %s", color & NDI_CLIENT_MASK, type, msg);
		493	else if (color < 0)
		494	return; // client cannot handle this
		495	else
		496	send_packet_printf ("drawinfo %d %s", color & NDI_COLOR_MASK, msg);
		497	}
		498
		499	void
		500	client::send_drawinfo (const char *msg, int flags)
		501	{
		502	send_msg (flags, "log", msg);
		503	}
		504
365	/******************************************************************************	505	/***********************************************************************
366	*	506	*
367	* statistics logging functions.	507	* packet functions/utilities
368	*	508	*
369	******************************************************************************/	509	**********************************************************************/
370		510
371	#ifdef CS_LOGSTATS	511	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	{	512	{
384	time_t now = time (NULL);	513	reset ();
385		514
386	/* If no connections recently, don't both to log anything */	515	int len = strlen (name);
387	if (cst_lst.ibytes == 0 && cst_lst.obytes == 0)	516	memcpy (cur, name, len); cur += len;
388	return;	517	*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	}	518	}
398	#endif
399		519
		520	packet &packet::operator <<(const ber32 v)
		521	{
		522	enum { maxlen = 32 / 7 + 1};
		523	uint8 buf[maxlen];
		524	uint8 *p = buf + maxlen;
		525	uint32 val = v.val;
		526
		527	*--p = val & 0x7F;
		528
		529	while (val > 0x7F)
		530	{
		531	val >>= 7;
		532	*--p = (val & 0x7F) \| 0x80;
		533	}
		534
		535	return *this << data (p, buf + maxlen - p);
		536	}
		537
		538	packet &packet::operator <<(const data &v)
		539	{
		540	if (room () < v.len)
		541	reset ();
		542	else
		543	{
		544	if (v.len)
		545	{
		546	memcpy (cur, v.ptr, v.len);
		547	cur += v.len;
		548	}
		549	}
		550
		551	return *this;
		552	}
		553
		554	packet &packet::operator <<(const data8 &v)
		555	{
		556	unsigned int len = min (v.len, 0x00FF);
		557	return *this << uint8 (len) << data (v.ptr, len);
		558	}
		559
		560	packet &packet::operator <<(const data16 &v)
		561	{
		562	unsigned int len = min (v.len, 0xFFFF);
		563	return *this << uint16 (len) << data (v.ptr, len);
		564	}
		565
		566	packet &packet::operator <<(const char *v)
		567	{
		568	return *this << data (v, strlen (v ? v : 0));
		569	}
		570
		571	void
		572	packet::vprintf (const char *format, va_list ap)
		573	{
		574	int size = room ();
		575
		576	int len = vsnprintf ((char *)cur, size, format, ap);
		577
		578	if (len >= size)
		579	return reset ();
		580
		581	cur += len;
		582	}
		583

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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 1.68 by root, Sat Dec 27 01:25:00 2008 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 1.68 by root, Sat Dec 27 01:25:00 2008 UTC