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Comparing deliantra/server/socket/image.C (file contents):
Revision 1.19 by root, Thu Feb 15 18:09:34 2007 UTC vs.
Revision 1.47 by root, Thu Jul 12 08:40:14 2007 UTC

1/* 1/*
2 * CrossFire, A Multiplayer game 2 * This file is part of Crossfire TRT, the Roguelike Realtime MORPG.
3 * 3 *
4 * Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team 4 * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT 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 * Crossfire TRT 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 <crossfire@schmorp.de>
23 */ 22 */
24 23
25/** \file 24/** \file
26 * Image related communication 25 * Image related communication
27 * 26 *
… …
34 */ 33 */
35 34
36#include <global.h> 35#include <global.h>
37#include <sproto.h> 36#include <sproto.h>
38 37
38#include "crc.h"
39
39#define MAX_FACE_SETS 20 /**< Maximum number of image sets the program will handle */ 40#define MAX_FACE_SETS 20 /**< Maximum number of image sets the program will handle */
40 41
41/** Information about one image */ 42/** Information about one image */
42typedef struct FaceInfo 43typedef struct FaceInfo
43{ 44{
… …
84 85
85 for (num = 0; num < MAX_FACE_SETS; num++) 86 for (num = 0; num < MAX_FACE_SETS; num++)
86 { 87 {
87 if (facesets[num].prefix) 88 if (facesets[num].prefix)
88 { 89 {
89 for (q = 0; q < nrofpixmaps; q++) 90 for (q = 0; q < faces.size (); q++)
90 if (facesets[num].faces[q].data) 91 if (facesets[num].faces[q].data)
91 free (facesets[num].faces[q].data); 92 free (facesets[num].faces[q].data);
92 93
93 free (facesets[num].prefix); 94 free (facesets[num].prefix);
94 free (facesets[num].fullname); 95 free (facesets[num].fullname);
… …
170} 171}
171 172
172#define MAX_IMAGE_SIZE 10000 173#define MAX_IMAGE_SIZE 10000
173 174
174/** 175/**
175 * Loads all the image types into memory.
176 *
177 * This way, we can easily send them to the client. We should really do something
178 * better than abort on any errors - on the other hand, these are all fatal
179 * to the server (can't work around them), but the abort just seems a bit
180 * messy (exit would probably be better.)
181 *
182 * Couple of notes: We assume that the faces are in a continous block.
183 * This works fine for now, but this could perhaps change in the future
184 *
185 * Function largely rewritten May 2000 to be more general purpose.
186 * The server itself does not care what the image data is - to the server,
187 * it is just data it needs to allocate. As such, the code is written
188 * to do such.
189 */
190void
191read_client_images (void)
192{
193 char filename[400];
194 char buf[HUGE_BUF];
195 char *cp, *cps[7];
196 FILE *infile;
197 int num, len, compressed, fileno, i, badline;
198
199 memset (facesets, 0, sizeof (facesets));
200 sprintf (filename, "%s/image_info", settings.datadir);
201 if ((infile = open_and_uncompress (filename, 0, &compressed)) == NULL)
202 {
203 LOG (llevError, "Unable to open %s\n", filename);
204 abort ();
205 }
206
207 while (fgets (buf, HUGE_BUF - 1, infile) != NULL)
208 {
209 badline = 0;
210
211 if (buf[0] == '#')
212 continue;
213
214 if (!(cps[0] = strtok (buf, ":")))
215 badline = 1;
216
217 for (i = 1; i < 7; i++)
218 if (!(cps[i] = strtok (NULL, ":")))
219 badline = 1;
220
221 if (badline)
222 LOG (llevError, "Bad line in image_info file, ignoring line:\n %s", buf);
223 else
224 {
225 len = atoi (cps[0]);
226 if (len >= MAX_FACE_SETS)
227 {
228 LOG (llevError, "To high a setnum in image_info file: %d > %d\n", len, MAX_FACE_SETS);
229 abort ();
230 }
231 facesets[len].prefix = strdup (cps[1]);
232 facesets[len].fullname = strdup (cps[2]);
233 facesets[len].fallback = atoi (cps[3]);
234 facesets[len].size = strdup (cps[4]);
235 facesets[len].extension = strdup (cps[5]);
236 facesets[len].comment = strdup (cps[6]);
237 }
238 }
239
240 close_and_delete (infile, compressed);
241
242 for (i = 0; i < MAX_FACE_SETS; i++)
243 {
244 if (facesets[i].prefix)
245 check_faceset_fallback (i, MAX_FACE_SETS);
246 }
247
248 /* Loaded the faceset information - now need to load up the
249 * actual faces.
250 */
251
252 for (fileno = 0; fileno < MAX_FACE_SETS; fileno++)
253 {
254 /* if prefix is not set, this is not used */
255 if (!facesets[fileno].prefix)
256 continue;
257
258 facesets[fileno].faces = (FaceInfo *) calloc (nrofpixmaps, sizeof (FaceInfo));
259
260 sprintf (filename, "%s/crossfire.%d", settings.datadir, fileno);
261 LOG (llevDebug, "Loading image file %s\n", filename);
262
263 if ((infile = open_and_uncompress (filename, 0, &compressed)) == NULL)
264 {
265 LOG (llevError, "Unable to open %s\n", filename);
266 abort ();
267 }
268
269 while (fgets (buf, HUGE_BUF - 1, infile) != NULL)
270 {
271 if (strncmp (buf, "IMAGE ", 6) != 0)
272 {
273 LOG (llevError, "read_client_images:Bad image line - not IMAGE, instead\n%s", buf);
274 abort ();
275 }
276
277 num = atoi (buf + 6);
278 if (num < 0 || num >= nrofpixmaps)
279 {
280 LOG (llevError, "read_client_images: Image num %d not in 0..%d\n%s", num, nrofpixmaps, buf);
281 abort ();
282 }
283
284 /* Skip accross the number data */
285 for (cp = buf + 6; *cp != ' '; cp++);
286 len = atoi (cp);
287 if (len == 0 || len > MAX_IMAGE_SIZE)
288 {
289 LOG (llevError, "read_client_images: length not valid: %d > %d \n%s", len, MAX_IMAGE_SIZE, buf);
290 abort ();
291 }
292
293 /* We don't actualy care about the name of the image that
294 * is embedded in the image file, so just ignore it.
295 */
296 facesets[fileno].faces[num].datalen = len;
297 facesets[fileno].faces[num].data = (uint8 *) malloc (len);
298 if ((i = fread (facesets[fileno].faces[num].data, len, 1, infile)) != 1)
299 {
300 LOG (llevError, "read_client_images: Did not read desired amount of data, wanted %d, got %d\n%s", len, i, buf);
301 abort ();
302 }
303
304 facesets[fileno].faces[num].checksum = 0;
305 for (i = 0; i < len; i++)
306 {
307 rotate_right (facesets[fileno].faces[num].checksum);
308 facesets[fileno].faces[num].checksum += facesets[fileno].faces[num].data[i];
309 facesets[fileno].faces[num].checksum &= 0xffffffff;
310 }
311 }
312
313 close_and_delete (infile, compressed);
314 } /* For fileno < MAX_FACE_SETS */
315}
316
317/**
318 * Client tells us what type of faces it wants. Also sets 176 * Client tells us what type of faces it wants. Also sets
319 * the caching attribute. 177 * the caching attribute.
320 * 178 *
321 */ 179 */
322void 180void
… …
332 if (mask) 190 if (mask)
333 ns->facecache = 1; 191 ns->facecache = 1;
334} 192}
335 193
336/** 194/**
337 * Client has requested pixmap that it somehow missed getting. 195 * client requested an image. send it rate-limited
338 * This will be called often if the client is 196 * before flushing.
339 * caching images.
340 */ 197 */
341void 198void
342SendFaceCmd (char *buf, int len, client *ns) 199AskFaceCmd (char *buf, int len, client *ns)
343{ 200{
344 uint16 facenum = atoi (buf); 201 int idx = 0, pri = 0;
345 202
346 if (facenum != 0) 203 sscanf (buf, "%d %d", &idx, &pri);
347 esrv_send_face (ns, facenum, 1); 204
205 const facedata *d = face_data (idx, ns->faceset);
206
207 if (!d)
208 return; // doh
209
210 client::ixsend ix;
211
212 ix.pri = pri;
213 ix.idx = idx;
214 ix.ofs = d->data.size ();
215
216 auto (pos, ns->ixface.end ());
217
218 if (ns->fxix < 2)
219 {
220 // gcfclient does not support prioritising, older cfplus versions
221 // do not support interleaved transfers.
222 if (!ns->ixface.empty ())
223 pos = ns->ixface.end () - 1;
224 }
225 else
226 {
227 // the by far most common case will be to insert
228 // near the end, so little looping.
229 while (pos != ns->ixface.begin ())
230 {
231 --pos;
232
233 // sort within 2k bins, to slightly prefer smaller images
234 if (pri > pos->pri || (pri == pos->pri && (ix.ofs >> 11) <= (pos->ofs >> 11)))
235 {
236 ++pos;
237 break;
238 }
239 }
240 }
241
242 ns->ixface.insert (pos, ix);
243
244#if 0
245 for (auto (i, ns->ixface.begin ()); i != ns->ixface.end (); ++i)
246 fprintf (stderr, "<%d,%d> ", i->pri, i->ofs);
247 fprintf (stderr, "\n");
248#endif
249}
250
251/**
252 * Tells client the picture it has to use
253 * to smooth a picture number given as argument.
254 */
255void
256AskSmooth (char *buf, int len, client *ns)
257{
258 ns->send_face (atoi (buf));
259 ns->flush_fx ();
260}
261
262// how lame
263static void print_facename (packet &sl, const facedata &d)
264{
265 for (int i = 0; i < CHKSUM_SIZE; ++i)
266 sl.printf ("%02x", d.chksum [i]);
267}
268
269// gcfclient uses the server-provided checksum for comparison, but always
270// writes a broken checksum to its cache file, so we have to provide
271// gcfclient with the same broken (and useless) checksum just to have it
272// cache the image despite its bugs.
273static uint32 gcfclient_checksum (const facedata *d)
274{
275 uint32 csum = 0;
276
277 for (std::string::const_iterator i = d->data.begin ();
278 i != d->data.end ();
279 ++i)
280 {
281 csum = rotate_right (csum);
282 csum += *(uint8 *)&*i;
283 }
284
285 return csum;
348} 286}
349 287
350/** 288/**
351 * Sends a face to a client if they are in pixmap mode 289 * Sends a face to a client if they are in pixmap mode
352 * nothing gets sent in bitmap mode. 290 * nothing gets sent in bitmap mode.
… …
354 * this is needed for the askface, in which we really do want to send the 292 * this is needed for the askface, in which we really do want to send the
355 * face (and askface is the only place that should be setting it). Otherwise, 293 * face (and askface is the only place that should be setting it). Otherwise,
356 * we look at the facecache, and if set, send the image name. 294 * we look at the facecache, and if set, send the image name.
357 */ 295 */
358void 296void
359esrv_send_face (client *ns, short face_num, int nocache) 297client::send_face (faceidx facenum)
360{ 298{
361 char fallback; 299 // never send face 0. ever. it does not exist.
300 if (!facenum)
301 return;
362 302
363 if (face_num <= 0 || face_num >= nrofpixmaps) 303 const facedata *d = face_data (facenum, faceset);
304
305 if (!d)
364 { 306 {
365 LOG (llevError, "esrv_send_face (%d) out of bounds??\n", face_num); 307 LOG (llevError, "client::send_face (%d) out of bounds??\n", facenum);
366 return; 308 return;
367 } 309 }
368 310
311 if (!must_send_face (facenum))
312 return;
313
314 // if for some reason we let a client without face caching connect,
315 // we better support that decision here and implement it.
316 if (!facecache)
317 return send_image (facenum);
318
319 if (fxix)
320 {
321 fxface.push_back (facenum);
322 return;
323 }
324
369 packet sl; 325 packet sl;
370 fallback = get_face_fallback (ns->faceset, face_num);
371 326
372 if (facesets[fallback].faces[face_num].data == NULL) 327 if (force_face0)
328 sl << "face " << uint16 (facenum);
329 else if (image2)
330 sl << "face2 " << uint16 (facenum) << uint8 (0) << uint32 (force_bad_checksum ? gcfclient_checksum (d) : 0);
331 else
332 sl << "face1 " << uint16 (facenum) << uint32 (force_bad_checksum ? gcfclient_checksum (d) : 0);
333
334 // how lame
335 print_facename (sl, *d);
336 send_packet (sl);
337
338 if (EMI_smooth)
339 {
340 faceinfo *f = face_info (facenum);
341
342 if (f->smooth)
343 {
344 send_face (f->smooth);
345
346 packet sl ("smooth");
347
348 sl << uint16 (facenum)
349 << uint16 (f->smooth);
350
351 send_packet (sl);
352 }
373 { 353 }
374 LOG (llevError, "esrv_send_face: faces[%d].data == NULL\n", face_num); 354}
355
356void client::flush_fx ()
357{
358 while (!fxface.empty ())
359 {
360 packet fx ("fx");
361 packet sx ("sx");
362
363 do
364 {
365 faceidx facenum = fxface.back (); fxface.pop_back ();
366
367 const facedata *d = face_data (facenum, faceset);
368
369 if (d)
370 {
371 fx << ber32 (facenum)
372 << data8 (d->chksum, CHKSUM_SIZE);
373
374 if (smoothing)
375 {
376 faceinfo *f = face_info (facenum);
377
378 if (f->smooth)
379 {
380 send_face (f->smooth);
381 sx << ber32 (facenum)
382 << ber32 (f->smooth)
383 << ber32 (f->smoothlevel);
384 }
385 }
386 }
387 }
388 while (!fxface.empty ()
389 && fx.room () > ber32::size + CHKSUM_SIZE + 1
390 && sx.room () > ber32::size * 3);
391
392 send_packet (fx);
393 if (sx.length () > 3) send_packet (sx);
394 }
395}
396
397void
398client::send_image (faceidx facenum)
399{
400 // never send face 0. ever. it does not exist.
401 if (!facenum)
402 return;
403
404 const facedata *d = face_data (facenum, faceset);
405
406 faces_sent[facenum] = true;
407
408 if (!d)
409 {
410 LOG (llevError, "client::send_image (%d) out of bounds??\n", facenum);
375 return; 411 return;
376 } 412 }
413
414 //TODO: check type here?
377 415
378 if (ns->facecache && !nocache) 416 if (force_image_newmap)
379 { 417 force_newmap = true;
380 sl << (ns->image2 ? "face2 " : "face1 ")
381 << uint16 (face_num);
382 418
383 if (ns->image2) 419 packet sl;
384 sl << uint8 (fallback);
385 420
386 sl << uint32 (facesets[fallback].faces[face_num].checksum)
387 << new_faces[face_num].name;
388
389 ns->send_packet (sl);
390 }
391 else
392 {
393 sl << (ns->image2 ? "image2 " : "image ") 421 sl << (image2 ? "image2 " : "image ")
394 << uint32 (face_num); 422 << uint32 (facenum);
395 423
396 if (ns->image2) 424 if (image2)
397 sl << uint8 (fallback); 425 sl << uint8 (0);
398 426
399 sl << uint32 (facesets[fallback].faces[face_num].datalen) 427 sl << uint32 (d->data.size ())
400 << data (facesets[fallback].faces[face_num].data, facesets[fallback].faces[face_num].datalen); 428 << data (d->data.data (), d->data.size ());
401 429
402 ns->send_packet (sl); 430 send_packet (sl);
431}
432
433// send all faces of this object to the client
434// this uses more bandwidth initially, but makes
435// animations look much smoother, and every client
436// is supposed to do client-side caching anyways.
437void
438client::send_faces (object *ob)
439{
440 send_face (ob->face);
441
442 if (ob->animation_id)
403 } 443 {
444 animation &anim = animations [ob->animation_id];
404 445
405 ns->faces_sent[face_num] |= NS_FACESENT_FACE; 446 for (int i = 0; i < anim.num_animations; i++)
447 send_face (anim.faces [i]);
448 }
449}
450
451/**
452 * Need to send an animation sequence to the client.
453 * We will send appropriate face commands to the client if we haven't
454 * sent them the face yet (this can become quite costly in terms of
455 * how much we are sending - on the other hand, this should only happen
456 * when the player logs in and picks stuff up.
457 */
458void
459client::send_animation (short anim_num)
460{
461 /* Do some checking on the anim_num we got. Note that the animations
462 * are added in contigous order, so if the number is in the valid
463 * range, it must be a valid animation.
464 */
465 if (anim_num < 0 || anim_num >= animations.size ())
466 {
467 LOG (llevError, "esrv_send_anim (%d) out of bounds??\n", anim_num);
468 return;
469 }
470
471 packet sl ("anim");
472
473 sl << uint16 (anim_num)
474 << uint16 (0); /* flags - not used right now */
475
476 /* Build up the list of faces. Also, send any information (ie, the
477 * the face itself) down to the client.
478 */
479 for (int i = 0; i < animations[anim_num].num_animations; i++)
480 {
481 send_face (animations[anim_num].faces[i]);
482 sl << uint16 (animations[anim_num].faces[i]); /* flags - not used right now */
483 }
484
485 send_packet (sl);
486
487 anims_sent[anim_num] = 1;
406} 488}
407 489
408/** 490/**
409 * Sends the number of images, checksum of the face file, 491 * Sends the number of images, checksum of the face file,
410 * and the image_info file information. See the doc/Developers/protocol 492 * and the image_info file information. See the doc/Developers/protocol
411 * if you want further detail. 493 * if you want further detail.
412 */ 494 */
413
414void 495void
415send_image_info (client *ns, char *params) 496send_image_info (client *ns, char *params)
416{ 497{
417 packet sl; 498 packet sl;
418 499
419 sl.printf ("replyinfo image_info\n%d\n%u\n", nrofpixmaps - 1, (unsigned int)bmaps_checksum); 500 //TODO: second parameter is a checksum, but it makes no sense in this current framework
501 sl.printf ("replyinfo image_info\n%d\n%u\n", MAX_FACES, 0);
420 502
421 for (int i = 0; i < MAX_FACE_SETS; i++) 503 sl << "0:base:standard:0:32x32:none:The old 32x32 faceset.\n";
422 if (facesets[i].prefix)
423 sl.printf ("%d:%s:%s:%d:%s:%s:%s", i,
424 facesets[i].prefix, facesets[i].fullname , facesets[i].fallback,
425 facesets[i].size , facesets[i].extension, facesets[i].comment);
426 504
427 ns->send_packet (sl); 505 ns->send_packet (sl);
428} 506}
429 507
430/** 508/**
… …
438 */ 516 */
439void 517void
440send_image_sums (client *ns, char *params) 518send_image_sums (client *ns, char *params)
441{ 519{
442 int start, stop; 520 int start, stop;
443 char *cp, buf[MAX_BUF]; 521 char *cp;
444 522
445 packet sl; 523 packet sl;
446 524
447 start = atoi (params); 525 start = atoi (params);
448 for (cp = params; *cp != '\0'; cp++) 526 for (cp = params; *cp != '\0'; cp++)
449 if (*cp == ' ') 527 if (*cp == ' ')
450 break; 528 break;
451 529
452 stop = atoi (cp); 530 stop = atoi (cp);
453 if (stop < start || *cp == '\0' || (stop - start) > 1000 || stop >= nrofpixmaps) 531 if (stop < start || *cp == '\0' || (stop - start) > 1000 || stop >= MAX_FACES)
454 { 532 {
455 sl.printf ("replyinfo image_sums %d %d", start, stop); 533 sl.printf ("replyinfo image_sums %d %d", start, stop);
456 ns->send_packet (sl); 534 ns->send_packet (sl);
457 sl.reset (); 535 sl.reset ();
458 return; 536 return;
459 } 537 }
460 538
461 sl.printf ("replyinfo image_sums %d %d ", start, stop); 539 sl.printf ("replyinfo image_sums %d %d ", start, stop);
462 540
463 for (int i = start; i <= stop; i++) 541 for (int i = start; i <= stop && i < faces.size (); i++)
464 { 542 {
465 ns->faces_sent[i] |= NS_FACESENT_FACE; 543 ns->faces_sent[i] = true;
466 544
467 int qq = get_face_fallback (ns->faceset, i); 545 const facedata *d = face_data (i, ns->faceset);
546
547 if (sl.room () < 2 + 4 + 1 + d->data.size () + 1)
548 break;
468 549
469 sl << uint16 (i) 550 sl << uint16 (i)
470 << uint32 (facesets[qq].faces[i].checksum) 551 << uint32 (0) // checksum
471 << uint8 (qq) 552 << uint8 (ns->faceset);
472 << data8 (&new_faces[i].name, new_faces[i].name.length () + 1); 553
554 print_facename (sl, *d); sl << uint8 (0);
473 } 555 }
474 556
475 /* It would make more sense to catch this pre-emptively in the code above. 557 /* It would make more sense to catch this pre-emptively in the code above.
476 * however, if this really happens, we probably just want to cut down the 558 * however, if this really happens, we probably just want to cut down the
477 * size to less than 1000, since that is what we claim the protocol would 559 * size to less than 1000, since that is what we claim the protocol would
478 * support. 560 * support.
479 */ 561 */
562 //TODO: taken care of above, should simply abort or make sure the above code is correct
480 if (sl.length () >= MAXSOCKBUF) 563 if (sl.length () >= MAXSOCKBUF)
481 { 564 {
482 LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF); 565 LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF);
483 abort (); 566 abort ();
484 } 567 }

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