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Comparing deliantra/server/socket/image.C (file contents):
Revision 1.29 by root, Wed Mar 14 00:07:26 2007 UTC vs.
Revision 1.56 by root, Tue May 6 16:55:26 2008 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 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5 * Copyright (C) 2001 Mark Wedel 5 * Copyright (©) 2001,2007 Mark Wedel
6 * Copyright (C) 1992 Frank Tore Johansen 6 * Copyright (©) 1992,2007 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
9 * it under the terms of the GNU General Public License as published by 9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or 10 * the Free Software Foundation, either version 3 of the License, or
11 * (at your option) any later version. 11 * (at your 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 GNU General Public License
19 * along with this program; if not, write to the Free Software 19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 * 20 *
22 * The author can be reached via e-mail to <crossfire@schmorp.de> 21 * The authors can be reached via e-mail to <support@deliantra.net>
23 */ 22 */
24 23
25/** \file 24/** \file
26 * Image related communication 25 * Image related communication
27 * 26 *
… …
36#include <global.h> 35#include <global.h>
37#include <sproto.h> 36#include <sproto.h>
38 37
39#include "crc.h" 38#include "crc.h"
40 39
41#define MAX_FACE_SETS 20 /**< Maximum number of image sets the program will handle */
42
43/** Information about one image */
44typedef 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 */
52typedef 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
65static FaceSets facesets[MAX_FACE_SETS]; /**< All facesets */
66
67/**
68 * Checks specified faceset is valid
69 * \param fsn faceset number
70 */
71int
72is_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 */
82void
83free_socket_images (void)
84{
85 int num, q;
86
87 for (num = 0; num < MAX_FACE_SETS; num++)
88 {
89 if (facesets[num].prefix)
90 {
91 for (q = 0; q < faces.size (); q++)
92 if (facesets[num].faces[q].data)
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 }
102 }
103}
104
105/**
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 */
117static int
118get_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
129 if (!facesets[faceset].prefix)
130 {
131 LOG (llevError, "get_face_fallback called with unused set (%d)?\n", faceset);
132 return 0; /* use default set */
133 }
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 */
149static void
150check_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 40#define MAX_IMAGE_SIZE 10000
175 41
176/** 42/**
177 * Client tells us what type of faces it wants. Also sets 43 * Client tells us what type of faces it wants. Also sets
178 * the caching attribute. 44 * the caching attribute.
… …
191 if (mask) 57 if (mask)
192 ns->facecache = 1; 58 ns->facecache = 1;
193} 59}
194 60
195/** 61/**
196 * Client has requested pixmap that it somehow missed getting. 62 * client requested an image. send it rate-limited
197 * This will be called often if the client is 63 * before flushing.
198 * caching images.
199 */ 64 */
200void 65void
201SendFaceCmd (char *buf, int len, client *ns) 66AskFaceCmd (char *buf, int len, client *ns)
202{ 67{
68 int idx = 0, pri = 0;
69
70 sscanf (buf, "%d %d", &idx, &pri);
71
72 //TODO: somehow fetch default priority from send_fx here
73
74 const facedata *d = face_data (idx, ns->faceset);
75
76 if (!d)
77 return; // doh
78
79 client::ixsend ix;
80
81 ix.pri = pri;
82 ix.idx = idx;
83 ix.ofs = d->data.size ();
84
85 auto (pos, ns->ixface.end ());
86
87 if (ns->fxix < 2)
88 {
89 // gcfclient does not support prioritising, older cfplus versions
90 // do not support interleaved transfers.
91 if (!ns->ixface.empty ())
92 pos = ns->ixface.end () - 1;
93 }
94 else
95 {
96 // the by far most common case will be to insert
97 // near the end, so little looping.
98 while (pos != ns->ixface.begin ())
99 {
100 --pos;
101
102 // sort within 2k bins, to slightly prefer smaller images
103 if (pri > pos->pri || (pri == pos->pri && (ix.ofs >> 11) <= (pos->ofs >> 11)))
104 {
105 ++pos;
106 break;
107 }
108 }
109 }
110
111 ns->ixface.insert (pos, ix);
112
113#if 0
114 for (auto (i, ns->ixface.begin ()); i != ns->ixface.end (); ++i)
115 fprintf (stderr, "<%d,%d> ", i->pri, i->ofs);
116 fprintf (stderr, "\n");
117#endif
118}
119
120/**
121 * Tells client the picture it has to use
122 * to smooth a picture number given as argument.
123 */
124void
125AskSmooth (char *buf, int len, client *ns)
126{
203 ns->send_face (atoi (buf), 1); 127 ns->send_face (atoi (buf), -100);
128 ns->flush_fx ();
204} 129}
205 130
206// how lame 131// how lame
207static void print_facename (packet &sl, const facedata &d) 132static void print_facename (packet &sl, const facedata &d)
208{ 133{
209 for (int i = 0; i < CHKSUM_SIZE; ++i) 134 for (int i = 0; i < CHKSUM_SIZE; ++i)
210 sl.printf ("%02x", d.chksum [i]); 135 sl.printf ("%02x", d.chksum [i]);
211} 136}
212 137
213// gcfclient uses the server-provided checksum for comparison, 138// gcfclient uses the server-provided checksum for comparison, but always
214// but always wrotes a broken checksum to its cache file, so we 139// writes a broken checksum to its cache file, so we have to provide
215// have to provide gcfclient with a useless checksum just to 140// gcfclient with the same broken (and useless) checksum just to have it
216// have to cache the image despite its bugs. 141// cache the image despite its bugs.
217static uint32 gcfclient_checksum (const facedata *d) 142static uint32 gcfclient_checksum (const facedata *d)
218{ 143{
219 uint32 csum = 0; 144 uint32 csum = 0;
220 145
221 for (std::string::const_iterator i = d->data.begin (); 146 for (std::string::const_iterator i = d->data.begin ();
… …
236 * this is needed for the askface, in which we really do want to send the 161 * 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, 162 * 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. 163 * we look at the facecache, and if set, send the image name.
239 */ 164 */
240void 165void
241client::send_face (faceidx facenum, bool forced) 166client::send_face (faceidx facenum, int pri)
242{ 167{
243 // never send face 0. ever. it does not exist. 168 // never send face 0. ever. it does not exist.
244 if (!facenum) 169 if (!facenum)
245 return; 170 return;
246 171
172 faceinfo *f = face_info (facenum);
173
174 if (!f)
175 {
176 LOG (llevError | logBacktrace, "client::send_face (%d) out of bounds??\n", facenum);
177 return;
178 }
179
180 // refuse to send non-image faces
181 if (!fx_want [f->type])
182 return;
183
184 if (faces_sent [facenum])
185 return;
186
187 faces_sent[facenum] = true;
188
189 // if for some reason we let a client without face caching connect,
190 // we better support that decision here and implement it.
191 if (!facecache)
192 return send_image (facenum);
193
194 if (fxix)
195 {
196 fxface.push_back (facenum);
197 return;
198 }
199
200 const facedata *d = f->data (faceset);
201
202 packet sl;
203
204 if (force_face0)
205 sl << "face " << uint16 (facenum);
206 else if (image2)
207 sl << "face2 " << uint16 (facenum) << uint8 (0) << uint32 (force_bad_checksum ? gcfclient_checksum (d) : 0);
208 else
209 sl << "face1 " << uint16 (facenum) << uint32 (force_bad_checksum ? gcfclient_checksum (d) : 0);
210
211 // how lame
212 print_facename (sl, *d);
213 send_packet (sl);
214
215 if (EMI_smooth)
216 {
217 if (f->smooth)
218 {
219 send_face (f->smooth);
220
221 packet sl ("smooth");
222
223 sl << uint16 (facenum)
224 << uint16 (f->smooth);
225
226 send_packet (sl);
227 }
228 }
229}
230
231void client::flush_fx ()
232{
233 while (!fxface.empty ())
234 {
235 packet fx ("fx");
236 packet sx ("sx");
237 int type = 0;
238
239 do
240 {
241 faceidx facenum = fxface.back (); fxface.pop_back ();
242
243 if (const faceinfo *f = face_info (facenum))
244 {
245 if (f->type != type)
246 {
247 type = f->type;
248
249 fx << ber32 (0)
250 << uint8 (1) << uint8 (type);
251 }
252
253 const facedata *d = f->data (faceset);
254
255 fx << ber32 (facenum)
256 << data8 (d->chksum, CHKSUM_SIZE);
257
258 if (smoothing)
259 {
260 faceinfo *f = face_info (facenum);
261
262 if (f->smooth)
263 {
264 send_face (f->smooth, -110);
265
266 sx << ber32 (facenum)
267 << ber32 (f->smooth)
268 << ber32 (f->smoothlevel);
269 }
270 }
271 }
272 }
273 while (!fxface.empty ()
274 && fx.room () > ber32::size + CHKSUM_SIZE + 1 + 3 /* type switch */
275 && sx.room () > ber32::size * 3);
276
277 send_packet (fx);
278 if (sx.length () > 3) send_packet (sx);
279 }
280}
281
282void
283client::send_image (faceidx facenum)
284{
285 // never send face 0. ever. it does not exist.
286 if (!facenum)
287 return;
288
247 const facedata *d = face_data (facenum, faceset); 289 const facedata *d = face_data (facenum, faceset);
248 290
291 faces_sent[facenum] = true;
292
249 if (!d) 293 if (!d)
250 { 294 {
251 LOG (llevError, "client::send_face (%d) out of bounds??\n", facenum); 295 LOG (llevError, "client::send_image (%d) out of bounds??\n", facenum);
252 return; 296 return;
253 } 297 }
298
299 if (force_image_newmap)
300 force_newmap = true;
254 301
255 packet sl; 302 packet sl;
256 303
257 if (facecache && !forced)
258 {
259 if (faces_sent[facenum] & NS_FACESENT_FACE)
260 return;
261
262 faces_sent[facenum] |= NS_FACESENT_FACE;
263
264 if (force_face0)
265 sl << "face " << uint16 (facenum);
266 else if (image2)
267 sl << "face2 " << uint16 (facenum) << uint8 (0) << uint32 (force_bad_checksum ? gcfclient_checksum (d) : 0);
268 else
269 sl << "face1 " << uint16 (facenum) << uint32 (force_bad_checksum ? gcfclient_checksum (d) : 0);
270
271 // how lame
272 print_facename (sl, *d);
273 }
274 else
275 {
276 sl << (image2 ? "image2 " : "image ") 304 sl << (image2 ? "image2 " : "image ")
277 << uint32 (facenum); 305 << uint32 (facenum);
278 306
279 if (image2) 307 if (image2)
280 sl << uint8 (0); 308 sl << uint8 (0);
281 309
282 sl << uint32 (d->data.size ()) 310 sl << uint32 (d->data.size ())
283 << data (d->data.data (), d->data.size ()); 311 << data (d->data.data (), d->data.size ());
284 }
285 312
286 send_packet (sl); 313 send_packet (sl);
287} 314}
288 315
289// send all faces of this object to the client 316// send all faces of this object to the client
… …
291// animations look much smoother, and every client 318// animations look much smoother, and every client
292// is supposed to do client-side caching anyways. 319// is supposed to do client-side caching anyways.
293void 320void
294client::send_faces (object *ob) 321client::send_faces (object *ob)
295{ 322{
296 send_face (ob->face); 323 send_face (ob->face, 10);
297 324
298 if (ob->animation_id) 325 if (ob->animation_id)
299 { 326 {
300 animation &anim = animations [ob->animation_id]; 327 animation &anim = animations [ob->animation_id];
301 328
302 for (int i = 0; i < anim.num_animations; i++) 329 for (int i = 0; i < anim.num_animations; i++)
303 send_face (anim.faces [i]); 330 send_face (anim.faces [i], -10);
304 }
305}
306
307/**
308 * A lot like the old AskSmooth (in fact, now called by AskSmooth).
309 * Basically, it makes no sense to wait for the client to request a
310 * a piece of data from us that we know the client wants. So
311 * if we know the client wants it, might as well push it to the
312 * client.
313 */
314void
315client::send_smooth (faceidx face)
316{
317 faceinfo *f = face_info (face);
318
319 if (!f)
320 return;
321
322 if (faces_sent[face] & NS_FACESENT_SMOOTH)
323 return;
324
325 faces_sent[face] |= NS_FACESENT_SMOOTH;
326
327 /* If we can't find a face, return and set it so we won't try to send this
328 * again.
329 */
330 if (!f->smooth)
331 { 331 }
332 LOG (llevError, "could not findsmooth for %d.\n", face);
333 return;
334 }
335
336 send_face (f->smooth);
337
338 packet sl ("smooth");
339
340 sl << uint16 (face)
341 << uint16 (f->smooth);
342
343 send_packet (sl);
344} 332}
345 333
346/** 334/**
347 * Need to send an animation sequence to the client. 335 * Need to send an animation sequence to the client.
348 * We will send appropriate face commands to the client if we haven't 336 * We will send appropriate face commands to the client if we haven't
… …
355{ 343{
356 /* Do some checking on the anim_num we got. Note that the animations 344 /* Do some checking on the anim_num we got. Note that the animations
357 * are added in contigous order, so if the number is in the valid 345 * are added in contigous order, so if the number is in the valid
358 * range, it must be a valid animation. 346 * range, it must be a valid animation.
359 */ 347 */
360 if (anim_num < 0 || anim_num > num_animations) 348 if (anim_num < 0 || anim_num >= animations.size ())
361 { 349 {
362 LOG (llevError, "esrv_send_anim (%d) out of bounds??\n", anim_num); 350 LOG (llevError, "esrv_send_anim (%d) out of bounds??\n", anim_num);
363 return; 351 return;
364 } 352 }
365 353
… …
371 /* Build up the list of faces. Also, send any information (ie, the 359 /* Build up the list of faces. Also, send any information (ie, the
372 * the face itself) down to the client. 360 * the face itself) down to the client.
373 */ 361 */
374 for (int i = 0; i < animations[anim_num].num_animations; i++) 362 for (int i = 0; i < animations[anim_num].num_animations; i++)
375 { 363 {
376 send_face (animations[anim_num].faces[i]); 364 send_face (animations[anim_num].faces[i], -20);
377 sl << uint16 (animations[anim_num].faces[i]); /* flags - not used right now */ 365 sl << uint16 (animations[anim_num].faces[i]); /* flags - not used right now */
378 } 366 }
379 367
380 send_packet (sl); 368 send_packet (sl);
381 369
… …
432 } 420 }
433 421
434 sl.printf ("replyinfo image_sums %d %d ", start, stop); 422 sl.printf ("replyinfo image_sums %d %d ", start, stop);
435 423
436 for (int i = start; i <= stop && i < faces.size (); i++) 424 for (int i = start; i <= stop && i < faces.size (); i++)
437 { 425 if (const faceinfo *f = face_info (i))
438 ns->faces_sent[i] |= NS_FACESENT_FACE; 426 if (ns->fx_want [f->type])
427 {
428 ns->faces_sent[i] = true;
439 429
440 const facedata *d = face_data (i, ns->faceset); 430 const facedata *d = f->data (ns->faceset);
441 431
442 if (sl.room () < 2 + 4 + 1 + d->data.size () + 1) 432 if (sl.room () < 2 + 4 + 1 + d->data.size () + 1)
443 break; 433 break;
444 434
445 sl << uint16 (i) 435 sl << uint16 (i)
446 << uint32 (0) // checksum 436 << uint32 (0) // checksum
447 << uint8 (ns->faceset); 437 << uint8 (ns->faceset);
448 438
449 print_facename (sl, *d); sl << uint8 (0); 439 print_facename (sl, *d); sl << uint8 (0);
450 } 440 }
451 441
452 /* It would make more sense to catch this pre-emptively in the code above. 442 /* It would make more sense to catch this pre-emptively in the code above.
453 * however, if this really happens, we probably just want to cut down the 443 * however, if this really happens, we probably just want to cut down the
454 * size to less than 1000, since that is what we claim the protocol would 444 * size to less than 1000, since that is what we claim the protocol would
455 * support. 445 * support.
456 */ 446 */
457 //TODO: taken care of above, should simply abort or make sure the above code is correct 447 //TODO: taken care of above, should simply abort or make sure the above code is correct
458 if (sl.length () >= MAXSOCKBUF) 448 if (sl.length () > MAXSOCKBUF)
459 { 449 {
460 LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF); 450 LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF);
461 abort (); 451 abort ();
462 } 452 }
463 453

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