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

Comparing deliantra/server/socket/image.C (file contents):
Revision 1.39 by root, Tue Apr 3 00:21:38 2007 UTC vs.
Revision 1.67 by root, Tue Jan 3 11:25:37 2012 UTC

…		…
1	/*	1	/*
2	* CrossFire, A Multiplayer game	2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	*	3	*
4	* Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team	4	* Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5	* Copyright (C) 2001 Mark Wedel	5	* Copyright (©) 2001 Mark Wedel
6	* Copyright (C) 1992 Frank Tore Johansen	6	* Copyright (©) 1992 Frank Tore Johansen
7	*	7	*
8	* This program is free software; you can redistribute it and/or modify	8	* Deliantra is free software: you can redistribute it and/or modify it under
9	* it under the terms of the GNU General Public License as published by	9	* the terms of the Affero GNU General Public License as published by the
10	* the Free Software Foundation; either version 2 of the License, or	10	* Free Software Foundation, either version 3 of the License, or (at your
11	* (at your option) any later version.	11	* option) any later version.
12	*	12	*
13	* This program is distributed in the hope that it will be useful,	13	* This program is distributed in the hope that it will be useful,
14	* but WITHOUT ANY WARRANTY; without even the implied warranty of	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16	* GNU General Public License for more details.	16	* GNU General Public License for more details.
17	*	17	*
18	* You should have received a copy of the GNU General Public License	18	* You should have received a copy of the Affero GNU General Public License
19	* along with this program; if not, write to the Free Software	19	* and the GNU General Public License along with this program. If not, see
20	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	20	* <http://www.gnu.org/licenses/>.
21	*	21	*
22	* The author can be reached via e-mail to <crossfire@schmorp.de>	22	* The authors can be reached via e-mail to <support@deliantra.net>
23	*/	23	*/
24		24
25	/** \file	25	/** \file
26	* Image related communication	26	* Image related communication
27	*	27	*
36	#include <global.h>	36	#include <global.h>
37	#include <sproto.h>	37	#include <sproto.h>
38		38
39	#include "crc.h"	39	#include "crc.h"
40		40
41	#define MAX_FACE_SETS 20 /*< Maximum number of image sets the program will handle /	41	#define MAX_IMAGE_SIZE 10000
42
43	/** Information about one image */
44	typedef struct FaceInfo
45	{
46	uint8 data; /< image data /
47	uint16 datalen; /*< length of the xpm data /
48	uint32 checksum; /*< Checksum of face data /
49	} FaceInfo;
50
51	/** Information about one face set */
52	typedef struct
53	{
54	char prefix; /< /
55	char *fullname;
56
57	uint8 fallback; /*< faceset to use when an image is not found in this faceset /
58	char *size;
59	char *extension;
60	char *comment;
61
62	FaceInfo faces; /< images in this faceset /
63	} FaceSets;
64
65	static FaceSets facesets[MAX_FACE_SETS]; /*< All facesets /
66		42
67	/**	43	/**
68	* Checks specified faceset is valid	44	* client requested an image. send it rate-limited
69	* \param fsn faceset number	45	* before flushing.
70	*/	46	*/
71	int
72	is_valid_faceset (int fsn)
73	{
74	if (fsn >= 0 && fsn < MAX_FACE_SETS && facesets[fsn].prefix)
75	return TRUE;
76	return FALSE;
77	}
78
79	/**
80	* Frees all faceset information
81	*/
82	void	47	void
83	free_socket_images (void)	48	AskFaceCmd (char buf, int len, client ns)
84	{	49	{
85	int num, q;	50	int idx = 0, pri = 0;
86		51
87	for (num = 0; num < MAX_FACE_SETS; num++)	52	sscanf (buf, "%d %d", &idx, &pri);
		53
		54	//TODO: somehow fetch default priority from send_fx here
		55
		56	const facedata *d = face_data (idx, ns->faceset);
		57
		58	if (!d)
		59	return; // doh
		60
		61	client::ixsend ix;
		62
		63	ix.pri = pri;
		64	ix.idx = idx;
		65	ix.ofs = d->data.size ();
		66
		67	auto (pos, ns->ixface.end ());
		68
		69	// the by far most common case will be to insert
		70	// near the end, so little looping.
		71	while (pos != ns->ixface.begin ())
88	{	72	{
89	if (facesets[num].prefix)	73	--pos;
		74
		75	// sort within 2k bins, to slightly prefer smaller images
		76	if (pri > pos->pri \|\| (pri == pos->pri && (ix.ofs >> 11) <= (pos->ofs >> 11)))
90	{	77	{
91	for (q = 0; q < faces.size (); q++)	78	++pos;
92	if (facesets[num].faces[q].data)	79	break;
93	free (facesets[num].faces[q].data);
94
95	free (facesets[num].prefix);
96	free (facesets[num].fullname);
97	free (facesets[num].size);
98	free (facesets[num].extension);
99	free (facesets[num].comment);
100	free (facesets[num].faces);
101	}	80	}
102	}	81	}
103	}
104		82
105	/**	83	ns->ixface.insert (pos, ix);
106	* This returns the set we will actually use when sending
107	* a face. This is used because the image files may be sparse.
108	* This function is recursive. imageno is the face number we are
109	* trying to send
110	*
111	* If face is not found in specified faceset, tries with 'fallback' faceset.
112	*
113	* \param faceset faceset to check
114	* \param imageno image number
115	*
116	*/
117	static int
118	get_face_fallback (int faceset, int imageno)
119	{
120	/* faceset 0 is supposed to have every image, so just return. Doing
121	* so also prevents infinite loops in the case if it not having
122	* the face, but in that case, we are likely to crash when we try
123	* to access the data, but that is probably preferable to an infinite
124	* loop.
125	*/
126	if (faceset == 0)
127	return 0;
128		84
129	if (!facesets[faceset].prefix)	85	#if 0
130	{	86	for (auto (i, ns->ixface.begin ()); i != ns->ixface.end (); ++i)
131	LOG (llevError, "get_face_fallback called with unused set (%d)?\n", faceset);	87	fprintf (stderr, "<%d,%d> ", i->pri, i->ofs);
132	return 0; /* use default set */	88	fprintf (stderr, "\n");
133	}	89	#endif
134
135	if (facesets[faceset].faces[imageno].data)
136	return faceset;
137
138	return get_face_fallback (facesets[faceset].fallback, imageno);
139	}
140
141	/**
142	* Checks fallback are correctly defined.
143	* This is a simple recursive function that makes sure the fallbacks
144	* are all proper (eg, the fall back to defined sets, and also
145	* eventually fall back to 0). At the top level, togo is set to MAX_FACE_SETS,
146	* if togo gets to zero, it means we have a loop.
147	* This is only run when we first load the facesets.
148	*/
149	static void
150	check_faceset_fallback (int faceset, int togo)
151	{
152	int fallback = facesets[faceset].fallback;
153
154	/* proper case - falls back to base set */
155	if (fallback == 0)
156	return;
157
158	if (!facesets[fallback].prefix)
159	{
160	LOG (llevError, "Face set %d falls to non set faceset %d\n", faceset, fallback);
161	abort ();
162	}
163
164	togo--;
165	if (togo == 0)
166	{
167	LOG (llevError, "Infinite loop found in facesets. aborting.\n");
168	abort ();
169	}
170
171	check_faceset_fallback (fallback, togo);
172	}
173
174	#define MAX_IMAGE_SIZE 10000
175
176	/**
177	* Client tells us what type of faces it wants. Also sets
178	* the caching attribute.
179	*
180	*/
181	void
182	SetFaceMode (char buf, int len, client ns)
183	{
184	int mask = (atoi (buf) & CF_FACE_CACHE), mode = (atoi (buf) & ~CF_FACE_CACHE);
185
186	if (mode == CF_FACE_NONE)
187	ns->facecache = 1;
188	else if (mode != CF_FACE_PNG)
189	ns->send_packet_printf ("drawinfo %d %s", NDI_RED, "Warning - send unsupported face mode. Will use Png");
190
191	if (mask)
192	ns->facecache = 1;
193	}
194
195	/**
196	* Client has requested pixmap that it somehow missed getting.
197	* This will be called often if the client is
198	* caching images.
199	*/
200	void
201	SendFaceCmd (char buf, int len, client ns)
202	{
203	ns->send_image (atoi (buf));
204	}
205
206	// how lame
207	static void print_facename (packet &sl, const facedata &d)
208	{
209	for (int i = 0; i < CHKSUM_SIZE; ++i)
210	sl.printf ("%02x", d.chksum [i]);
211	}
212
213	// gcfclient uses the server-provided checksum for comparison, but always
214	// writes a broken checksum to its cache file, so we have to provide
215	// gcfclient with the same broken (and useless) checksum just to have it
216	// cache the image despite its bugs.
217	static uint32 gcfclient_checksum (const facedata *d)
218	{
219	uint32 csum = 0;
220
221	for (std::string::const_iterator i = d->data.begin ();
222	i != d->data.end ();
223	++i)
224	{
225	csum = rotate_right (csum);
226	csum += (uint8 )&*i;
227	}
228
229	return csum;
230	}	90	}
231		91
232	/**	92	/**
233	* Sends a face to a client if they are in pixmap mode	93	* Sends a face to a client if they are in pixmap mode
234	* nothing gets sent in bitmap mode.	94	* nothing gets sent in bitmap mode.
…		…
236	* this is needed for the askface, in which we really do want to send the	96	* this is needed for the askface, in which we really do want to send the
237	* face (and askface is the only place that should be setting it). Otherwise,	97	* face (and askface is the only place that should be setting it). Otherwise,
238	* we look at the facecache, and if set, send the image name.	98	* we look at the facecache, and if set, send the image name.
239	*/	99	*/
240	void	100	void
241	client::send_face (faceidx facenum)	101	client::send_face (faceidx facenum, int pri)
242	{	102	{
243	// never send face 0. ever. it does not exist.	103	// never send face 0. ever. it does not exist.
244	if (!facenum)	104	if (!facenum)
245	return;	105	return;
246		106
247	const facedata *d = face_data (facenum, faceset);	107	faceinfo *f = face_info (facenum);
248		108
249	if (!d)	109	if (!f)
250	{	110	{
251	LOG (llevError, "client::send_face (%d) out of bounds??\n", facenum);	111	LOG (llevError \| logBacktrace, "client::send_face (%d) out of bounds??\n", facenum);
252	return;	112	return;
253	}	113	}
254		114
255	if (faces_sent[facenum])	115	// refuse to send non-image faces
		116	if (!fx_want [f->type])
256	return;	117	return;
257		118
		119	if (faces_sent [facenum])
		120	return;
		121
258	faces_sent[facenum] = true;	122	faces_sent[facenum] = true;
259		123
260	// if for some reason we let a client without face caching connect,
261	// we better support that decision here and implement it.
262	if (!facecache)
263	return send_image (facenum);
264
265	if (fxix)
266	{
267	fxface.push_back (facenum);	124	fxface.push_back (facenum);
268	return;
269	}
270
271	packet sl;
272
273	if (force_face0)
274	sl << "face " << uint16 (facenum);
275	else if (image2)
276	sl << "face2 " << uint16 (facenum) << uint8 (0) << uint32 (force_bad_checksum ? gcfclient_checksum (d) : 0);
277	else
278	sl << "face1 " << uint16 (facenum) << uint32 (force_bad_checksum ? gcfclient_checksum (d) : 0);
279
280	// how lame
281	print_facename (sl, *d);
282	send_packet (sl);
283
284	faceinfo *f = face_info (facenum);
285	if (f->smooth && EMI_smooth)
286	{
287	send_face (f->smooth);
288
289	packet sl ("smooth");
290
291	sl << uint16 (facenum)
292	<< uint16 (f->smooth);
293
294	send_packet (sl);
295	}
296	}	125	}
297		126
298	void client::flush_fx ()	127	void client::flush_fx ()
299	{	128	{
300	while (!fxface.empty ())	129	while (!fxface.empty ())
301	{	130	{
302	packet sl ("fx");	131	packet fx ("fx");
		132	packet sx ("sx");
		133	int type = 0;
303		134
304	do	135	do
305	{	136	{
306	faceidx facenum = fxface.back (); fxface.pop_back ();	137	faceidx facenum = fxface.back (); fxface.pop_back ();
307		138
308	const facedata *d = face_data (facenum, faceset);	139	if (const faceinfo *f = face_info (facenum))
309
310	if (d)
311	{	140	{
		141	if (f->type != type)
		142	{
		143	type = f->type;
		144
		145	fx << ber32 (0)
		146	<< uint8 (1) << uint8 (type);
		147	}
		148
		149	const facedata *d = f->data (faceset);
		150
312	sl << ber32 (facenum)	151	fx << ber32 (facenum)
313	<< data8 (d->chksum, CHKSUM_SIZE);	152	<< data8 (d->chksum, d->chksum_len);
314		153
		154	if (smoothing)
		155	{
315	faceinfo *f = face_info (facenum);	156	faceinfo *f = face_info (facenum);
		157
316	if (f->smooth && EMI_smooth)	158	if (f->smooth)
		159	{
		160	send_face (f->smooth, -110);
		161
		162	sx << ber32 (facenum)
317	sl << ber32 (f->smooth);	163	<< ber32 (f->smooth)
		164	<< ber32 (f->smoothlevel);
		165	}
		166	}
318	}	167	}
319	}	168	}
320	while (!fxface.empty () && sl.room () > CHKSUM_SIZE + 8 + 8);	169	while (!fxface.empty ()
		170	&& fx.room () > ber32::size + CHKSUM_MAXLEN + 1 + 3 /* type switch */
		171	&& sx.room () > ber32::size * 3);
321		172
322	send_packet (sl);	173	send_packet (fx);
323	}	174	if (sx.length () > 3) send_packet (sx);
324	}
325
326	void
327	client::send_image (faceidx facenum)
328	{
329	// never send face 0. ever. it does not exist.
330	if (!facenum)
331	return;
332
333	const facedata *d = face_data (facenum, faceset);
334
335	if (!d)
336	{	175	}
337	LOG (llevError, "client::send_image (%d) out of bounds??\n", facenum);
338	return;
339	}
340
341	faces_sent[facenum] = true;
342
343	if (force_image_newmap)
344	force_newmap = true;
345
346	packet sl;
347
348	sl << (image2 ? "image2 " : "image ")
349	<< uint32 (facenum);
350
351	if (image2)
352	sl << uint8 (0);
353
354	sl << uint32 (d->data.size ())
355	<< data (d->data.data (), d->data.size ());
356
357	send_packet (sl);
358	}	176	}
359		177
360	// send all faces of this object to the client	178	// send all faces of this object to the client
361	// this uses more bandwidth initially, but makes	179	// this uses more bandwidth initially, but makes
362	// animations look much smoother, and every client	180	// animations look much smoother, and every client
363	// is supposed to do client-side caching anyways.	181	// is supposed to do client-side caching anyways.
364	void	182	void
365	client::send_faces (object *ob)	183	client::send_faces (object *ob)
366	{	184	{
367	send_face (ob->face);	185	send_face (ob->face, 10);
368		186
369	if (ob->animation_id)	187	if (ob->animation_id)
370	{	188	{
371	animation &anim = animations [ob->animation_id];	189	const animation &anim = ob->anim ();
372		190
373	for (int i = 0; i < anim.num_animations; i++)	191	for (int i = 0; i < anim.num_animations; i++)
374	send_face (anim.faces [i]);	192	send_face (anim.faces [i], -10);
375	}	193	}
376	}	194	}
377		195
378	/**	196	/**
379	* Need to send an animation sequence to the client.	197	* Need to send an animation sequence to the client.
…		…
384	*/	202	*/
385	void	203	void
386	client::send_animation (short anim_num)	204	client::send_animation (short anim_num)
387	{	205	{
388	/* Do some checking on the anim_num we got. Note that the animations	206	/* Do some checking on the anim_num we got. Note that the animations
389	* are added in contigous order, so if the number is in the valid	207	* are added in contiguous order, so if the number is in the valid
390	* range, it must be a valid animation.	208	* range, it must be a valid animation.
391	*/	209	*/
392	if (anim_num < 0 \|\| anim_num > num_animations)	210	if (anim_num < 0 \|\| anim_num >= animations.size ())
393	{	211	{
394	LOG (llevError, "esrv_send_anim (%d) out of bounds??\n", anim_num);	212	LOG (llevError, "esrv_send_anim (%d) out of bounds??\n", anim_num);
395	return;	213	return;
396	}	214	}
397		215
…		…
403	/* Build up the list of faces. Also, send any information (ie, the	221	/* Build up the list of faces. Also, send any information (ie, the
404	* the face itself) down to the client.	222	* the face itself) down to the client.
405	*/	223	*/
406	for (int i = 0; i < animations[anim_num].num_animations; i++)	224	for (int i = 0; i < animations[anim_num].num_animations; i++)
407	{	225	{
408	send_face (animations[anim_num].faces[i]);	226	send_face (animations[anim_num].faces[i], -20);
409	sl << uint16 (animations[anim_num].faces[i]); /* flags - not used right now */	227	sl << uint16 (animations[anim_num].faces[i]);
410	}	228	}
411		229
412	send_packet (sl);	230	send_packet (sl);
413		231
414	anims_sent[anim_num] = 1;	232	anims_sent[anim_num] = 1;
415	}	233	}
416		234
417	/**
418	* Sends the number of images, checksum of the face file,
419	* and the image_info file information. See the doc/Developers/protocol
420	* if you want further detail.
421	*/
422	void	235	void
423	send_image_info (client ns, char params)	236	client::invalidate_face (faceidx idx)
424	{	237	{
425	packet sl;	238	faces_sent [idx] = false;
426		239	force_newmap = true;
427	//TODO: second parameter is a checksum, but it makes no sense in this current framework
428	sl.printf ("replyinfo image_info\n%d\n%u\n", MAX_FACES, 0);
429
430	sl << "0:base:standard:0:32x32:none:The old 32x32 faceset.\n";
431
432	ns->send_packet (sl);
433	}	240	}
434		241
435	/**
436	* Sends requested face information.
437	* \param ns socket to send to
438	* \param params contains first and last index of face
439	*
440	* For each image in [start..stop] sends
441	* - checksum
442	* - name
443	*/
444	void	242	void
445	send_image_sums (client ns, char params)	243	client::invalidate_all_faces ()
446	{	244	{
447	int start, stop;	245	faces_sent.reset ();
448	char *cp;	246	force_newmap = true;
449
450	packet sl;
451
452	start = atoi (params);
453	for (cp = params; *cp != '\0'; cp++)
454	if (*cp == ' ')
455	break;
456
457	stop = atoi (cp);
458	if (stop < start \|\| *cp == '\0' \|\| (stop - start) > 1000 \|\| stop >= MAX_FACES)
459	{
460	sl.printf ("replyinfo image_sums %d %d", start, stop);
461	ns->send_packet (sl);
462	sl.reset ();
463	return;
464	}
465
466	sl.printf ("replyinfo image_sums %d %d ", start, stop);
467
468	for (int i = start; i <= stop && i < faces.size (); i++)
469	{
470	ns->faces_sent[i] = true;
471
472	const facedata *d = face_data (i, ns->faceset);
473
474	if (sl.room () < 2 + 4 + 1 + d->data.size () + 1)
475	break;
476
477	sl << uint16 (i)
478	<< uint32 (0) // checksum
479	<< uint8 (ns->faceset);
480
481	print_facename (sl, *d); sl << uint8 (0);
482	}
483
484	/* It would make more sense to catch this pre-emptively in the code above.
485	* however, if this really happens, we probably just want to cut down the
486	* size to less than 1000, since that is what we claim the protocol would
487	* support.
488	*/
489	//TODO: taken care of above, should simply abort or make sure the above code is correct
490	if (sl.length () >= MAXSOCKBUF)
491	{
492	LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF);
493	abort ();
494	}
495
496	ns->send_packet (sl);
497	}	247	}
498		248

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing deliantra/server/socket/image.C (file contents): Revision 1.39 by root, Tue Apr 3 00:21:38 2007 UTC vs. Revision 1.67 by root, Tue Jan 3 11:25:37 2012 UTC

Diff Legend

Comparing deliantra/server/socket/image.C (file contents):
Revision 1.39 by root, Tue Apr 3 00:21:38 2007 UTC vs.
Revision 1.67 by root, Tue Jan 3 11:25:37 2012 UTC