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Revision 1.13 by root, Fri Dec 15 19:59:20 2006 UTC vs.
Revision 1.61 by root, Wed Nov 4 13:46:37 2009 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) 2001 Mark Wedel 5 * Copyright (©) 2001,2007 Mark Wedel
5 Copyright (C) 1992 Frank Tore Johansen 6 * Copyright (©) 1992,2007 Frank Tore Johansen
6 7 *
7 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
8 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
9 the Free Software Foundation; either version 2 of the License, or 10 * Free Software Foundation, either version 3 of the License, or (at your
10 (at your option) any later version. 11 * option) any later version.
11 12 *
12 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,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details. 16 * GNU General Public License for more details.
16 17 *
17 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
18 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
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 * <http://www.gnu.org/licenses/>.
20 21 *
21 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>
22*/ 23 */
23 24
24/** \file 25/** \file
25 * Image related communication 26 * Image related communication
26 * 27 *
27 * \date 2003-12-02 28 * \date 2003-12-02
… …
33 */ 34 */
34 35
35#include <global.h> 36#include <global.h>
36#include <sproto.h> 37#include <sproto.h>
37 38
38#define MAX_FACE_SETS 20 /**< Maximum number of image sets the program will handle */ 39#include "crc.h"
39 40
40/** Information about one image */ 41#define MAX_IMAGE_SIZE 10000
41typedef struct FaceInfo
42{
43
44 uint8 *data; /**< image data */
45 uint16 datalen; /**< length of the xpm data */
46 uint32 checksum; /**< Checksum of face data */
47} FaceInfo;
48
49/** Information about one face set */
50typedef struct
51{
52
53 char *prefix; /**< */
54 char *fullname;
55
56 uint8 fallback; /**< faceset to use when an image is not found in this faceset */
57 char *size;
58 char *extension;
59 char *comment;
60
61 FaceInfo *faces; /**< images in this faceset */
62} FaceSets;
63
64static FaceSets facesets[MAX_FACE_SETS]; /**< All facesets */
65 42
66/** 43/**
67 * Checks specified faceset is valid 44 * client requested an image. send it rate-limited
68 * \param fsn faceset number 45 * before flushing.
69 */ 46 */
70int
71is_valid_faceset (int fsn)
72{
73 if (fsn >= 0 && fsn < MAX_FACE_SETS && facesets[fsn].prefix)
74 return TRUE;
75 return FALSE;
76}
77
78/**
79 * Frees all faceset information
80 */
81void 47void
82free_socket_images (void) 48AskFaceCmd (char *buf, int len, client *ns)
83{ 49{
84 int num, q; 50 int idx = 0, pri = 0;
85 51
86 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 ())
87 { 72 {
88 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)))
89 { 77 {
90 for (q = 0; q < nrofpixmaps; q++) 78 ++pos;
91 if (facesets[num].faces[q].data) 79 break;
92 free (facesets[num].faces[q].data);
93 free (facesets[num].prefix);
94 free (facesets[num].fullname);
95 free (facesets[num].size);
96 free (facesets[num].extension);
97 free (facesets[num].comment);
98 free (facesets[num].faces);
99 } 80 }
100 } 81 }
101}
102 82
103/** 83 ns->ixface.insert (pos, ix);
104 * This returns the set we will actually use when sending
105 * a face. This is used because the image files may be sparse.
106 * This function is recursive. imageno is the face number we are
107 * trying to send
108 *
109 * If face is not found in specified faceset, tries with 'fallback' faceset.
110 *
111 * \param faceset faceset to check
112 * \param imageno image number
113 *
114 */
115static int
116get_face_fallback (int faceset, int imageno)
117{
118 /* faceset 0 is supposed to have every image, so just return. Doing
119 * so also prevents infinite loops in the case if it not having
120 * the face, but in that case, we are likely to crash when we try
121 * to access the data, but that is probably preferable to an infinite
122 * loop.
123 */
124 if (faceset == 0)
125 return 0;
126 84
127 if (!facesets[faceset].prefix) 85#if 0
128 { 86 for (auto (i, ns->ixface.begin ()); i != ns->ixface.end (); ++i)
129 LOG (llevError, "get_face_fallback called with unused set (%d)?\n", faceset); 87 fprintf (stderr, "<%d,%d> ", i->pri, i->ofs);
130 return 0; /* use default set */ 88 fprintf (stderr, "\n");
131 } 89#endif
132 if (facesets[faceset].faces[imageno].data)
133 return faceset;
134 return get_face_fallback (facesets[faceset].fallback, imageno);
135}
136
137/**
138 * Checks fallback are correctly defined.
139 * This is a simple recursive function that makes sure the fallbacks
140 * are all proper (eg, the fall back to defined sets, and also
141 * eventually fall back to 0). At the top level, togo is set to MAX_FACE_SETS,
142 * if togo gets to zero, it means we have a loop.
143 * This is only run when we first load the facesets.
144 */
145static void
146check_faceset_fallback (int faceset, int togo)
147{
148 int fallback = facesets[faceset].fallback;
149
150 /* proper case - falls back to base set */
151 if (fallback == 0)
152 return;
153
154 if (!facesets[fallback].prefix)
155 {
156 LOG (llevError, "Face set %d falls to non set faceset %d\n", faceset, fallback);
157 abort ();
158 }
159 togo--;
160 if (togo == 0)
161 {
162 LOG (llevError, "Infinite loop found in facesets. aborting.\n");
163 abort ();
164 }
165 check_faceset_fallback (fallback, togo);
166}
167
168#define MAX_IMAGE_SIZE 10000
169
170/**
171 * Loads all the image types into memory.
172 *
173 * This way, we can easily send them to the client. We should really do something
174 * better than abort on any errors - on the other hand, these are all fatal
175 * to the server (can't work around them), but the abort just seems a bit
176 * messy (exit would probably be better.)
177 *
178 * Couple of notes: We assume that the faces are in a continous block.
179 * This works fine for now, but this could perhaps change in the future
180 *
181 * Function largely rewritten May 2000 to be more general purpose.
182 * The server itself does not care what the image data is - to the server,
183 * it is just data it needs to allocate. As such, the code is written
184 * to do such.
185 */
186
187void
188read_client_images (void)
189{
190 char filename[400];
191 char buf[HUGE_BUF];
192 char *cp, *cps[7];
193 FILE *infile;
194 int num, len, compressed, fileno, i, badline;
195
196 memset (facesets, 0, sizeof (facesets));
197 sprintf (filename, "%s/image_info", settings.datadir);
198 if ((infile = open_and_uncompress (filename, 0, &compressed)) == NULL)
199 {
200 LOG (llevError, "Unable to open %s\n", filename);
201 abort ();
202 }
203 while (fgets (buf, HUGE_BUF - 1, infile) != NULL)
204 {
205 badline = 0;
206
207 if (buf[0] == '#')
208 continue;
209 if (!(cps[0] = strtok (buf, ":")))
210 badline = 1;
211 for (i = 1; i < 7; i++)
212 {
213 if (!(cps[i] = strtok (NULL, ":")))
214 badline = 1;
215 }
216 if (badline)
217 {
218 LOG (llevError, "Bad line in image_info file, ignoring line:\n %s", buf);
219 }
220 else
221 {
222 len = atoi (cps[0]);
223 if (len >= MAX_FACE_SETS)
224 {
225 LOG (llevError, "To high a setnum in image_info file: %d > %d\n", len, MAX_FACE_SETS);
226 abort ();
227 }
228 facesets[len].prefix = strdup (cps[1]);
229 facesets[len].fullname = strdup (cps[2]);
230 facesets[len].fallback = atoi (cps[3]);
231 facesets[len].size = strdup (cps[4]);
232 facesets[len].extension = strdup (cps[5]);
233 facesets[len].comment = strdup (cps[6]);
234 }
235 }
236 close_and_delete (infile, compressed);
237 for (i = 0; i < MAX_FACE_SETS; i++)
238 {
239 if (facesets[i].prefix)
240 check_faceset_fallback (i, MAX_FACE_SETS);
241 }
242 /* Loaded the faceset information - now need to load up the
243 * actual faces.
244 */
245
246 for (fileno = 0; fileno < MAX_FACE_SETS; fileno++)
247 {
248 /* if prefix is not set, this is not used */
249 if (!facesets[fileno].prefix)
250 continue;
251 facesets[fileno].faces = (FaceInfo *) calloc (nrofpixmaps, sizeof (FaceInfo));
252
253 sprintf (filename, "%s/crossfire.%d", settings.datadir, fileno);
254 LOG (llevDebug, "Loading image file %s\n", filename);
255
256 if ((infile = open_and_uncompress (filename, 0, &compressed)) == NULL)
257 {
258 LOG (llevError, "Unable to open %s\n", filename);
259 abort ();
260 }
261 while (fgets (buf, HUGE_BUF - 1, infile) != NULL)
262 {
263 if (strncmp (buf, "IMAGE ", 6) != 0)
264 {
265 LOG (llevError, "read_client_images:Bad image line - not IMAGE, instead\n%s", buf);
266 abort ();
267 }
268 num = atoi (buf + 6);
269 if (num < 0 || num >= nrofpixmaps)
270 {
271 LOG (llevError, "read_client_images: Image num %d not in 0..%d\n%s", num, nrofpixmaps, buf);
272 abort ();
273 }
274 /* Skip accross the number data */
275 for (cp = buf + 6; *cp != ' '; cp++);
276 len = atoi (cp);
277 if (len == 0 || len > MAX_IMAGE_SIZE)
278 {
279 LOG (llevError, "read_client_images: length not valid: %d > %d \n%s", len, MAX_IMAGE_SIZE, buf);
280 abort ();
281 }
282 /* We don't actualy care about the name of the image that
283 * is embedded in the image file, so just ignore it.
284 */
285 facesets[fileno].faces[num].datalen = len;
286 facesets[fileno].faces[num].data = (uint8 *) malloc (len);
287 if ((i = fread (facesets[fileno].faces[num].data, len, 1, infile)) != 1)
288 {
289 LOG (llevError, "read_client_images: Did not read desired amount of data, wanted %d, got %d\n%s", len, i, buf);
290 abort ();
291 }
292 facesets[fileno].faces[num].checksum = 0;
293 for (i = 0; i < len; i++)
294 {
295 ROTATE_RIGHT (facesets[fileno].faces[num].checksum);
296 facesets[fileno].faces[num].checksum += facesets[fileno].faces[num].data[i];
297 facesets[fileno].faces[num].checksum &= 0xffffffff;
298 }
299 }
300 close_and_delete (infile, compressed);
301 } /* For fileno < MAX_FACE_SETS */
302}
303
304/**
305 * Client tells us what type of faces it wants. Also sets
306 * the caching attribute.
307 *
308 */
309
310void
311SetFaceMode (char *buf, int len, client *ns)
312{
313 int mask = (atoi (buf) & CF_FACE_CACHE), mode = (atoi (buf) & ~CF_FACE_CACHE);
314
315 if (mode == CF_FACE_NONE)
316 ns->facecache = 1;
317 else if (mode != CF_FACE_PNG)
318 {
319 packet sl;
320 sl.printf ("drawinfo %d %s", NDI_RED, "Warning - send unsupported face mode. Will use Png");
321 ns->send_packet (sl);
322 }
323
324 if (mask)
325 ns->facecache = 1;
326}
327
328/**
329 * Client has requested pixmap that it somehow missed getting.
330 * This will be called often if the client is
331 * caching images.
332 */
333
334void
335SendFaceCmd (char *buff, int len, client * ns)
336{
337 long tmpnum = atoi (buff);
338 short facenum = tmpnum & 0xffff;
339
340 if (facenum != 0)
341 esrv_send_face (ns, facenum, 1);
342} 90}
343 91
344/** 92/**
345 * 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
346 * nothing gets sent in bitmap mode. 94 * nothing gets sent in bitmap mode.
347 * If nocache is true (nonzero), ignore the cache setting from the client - 95 * If nocache is true (nonzero), ignore the cache setting from the client -
348 * 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
349 * 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,
350 * 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.
351 */ 99 */
352
353void 100void
354esrv_send_face (client *ns, short face_num, int nocache) 101client::send_face (faceidx facenum, int pri)
355{ 102{
356 char fallback; 103 // never send face 0. ever. it does not exist.
104 if (!facenum)
105 return;
357 106
358 if (face_num <= 0 || face_num >= nrofpixmaps) 107 faceinfo *f = face_info (facenum);
108
109 if (!f)
359 { 110 {
360 LOG (llevError, "esrv_send_face (%d) out of bounds??\n", face_num); 111 LOG (llevError | logBacktrace, "client::send_face (%d) out of bounds??\n", facenum);
361 return; 112 return;
362 } 113 }
363 114
364 packet sl; 115 // refuse to send non-image faces
365 fallback = get_face_fallback (ns->faceset, face_num); 116 if (!fx_want [f->type])
117 return;
366 118
367 if (facesets[fallback].faces[face_num].data == NULL) 119 if (faces_sent [facenum])
120 return;
121
122 faces_sent[facenum] = true;
123
124 fxface.push_back (facenum);
125}
126
127void client::flush_fx ()
128{
129 while (!fxface.empty ())
130 {
131 packet fx ("fx");
132 packet sx ("sx");
133 int type = 0;
134
135 do
136 {
137 faceidx facenum = fxface.back (); fxface.pop_back ();
138
139 if (const faceinfo *f = face_info (facenum))
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
151 fx << ber32 (facenum)
152 << data8 (d->chksum, CHKSUM_SIZE);
153
154 if (smoothing)
155 {
156 faceinfo *f = face_info (facenum);
157
158 if (f->smooth)
159 {
160 send_face (f->smooth, -110);
161
162 sx << ber32 (facenum)
163 << ber32 (f->smooth)
164 << ber32 (f->smoothlevel);
165 }
166 }
167 }
168 }
169 while (!fxface.empty ()
170 && fx.room () > ber32::size + CHKSUM_SIZE + 1 + 3 /* type switch */
171 && sx.room () > ber32::size * 3);
172
173 send_packet (fx);
174 if (sx.length () > 3) send_packet (sx);
368 { 175 }
369 LOG (llevError, "esrv_send_face: faces[%d].data == NULL\n", face_num); 176}
177
178// send all faces of this object to the client
179// this uses more bandwidth initially, but makes
180// animations look much smoother, and every client
181// is supposed to do client-side caching anyways.
182void
183client::send_faces (object *ob)
184{
185 send_face (ob->face, 10);
186
187 if (ob->animation_id)
188 {
189 const animation &anim = ob->anim ();
190
191 for (int i = 0; i < anim.num_animations; i++)
192 send_face (anim.faces [i], -10);
193 }
194}
195
196/**
197 * Need to send an animation sequence to the client.
198 * We will send appropriate face commands to the client if we haven't
199 * sent them the face yet (this can become quite costly in terms of
200 * how much we are sending - on the other hand, this should only happen
201 * when the player logs in and picks stuff up.
202 */
203void
204client::send_animation (short anim_num)
205{
206 /* Do some checking on the anim_num we got. Note that the animations
207 * are added in contiguous order, so if the number is in the valid
208 * range, it must be a valid animation.
209 */
210 if (anim_num < 0 || anim_num >= animations.size ())
211 {
212 LOG (llevError, "esrv_send_anim (%d) out of bounds??\n", anim_num);
370 return; 213 return;
371 } 214 }
372 215
373 if (ns->facecache && !nocache) 216 packet sl ("anim");
374 {
375 sl << (ns->image2 ? "face2 " : "face1 ")
376 << uint16 (face_num);
377 217
378 if (ns->image2)
379 sl << uint8 (fallback);
380
381 sl << uint32 (facesets[fallback].faces[face_num].checksum)
382 << new_faces[face_num].name;
383
384 ns->send_packet (sl);
385 }
386 else
387 {
388 sl << (ns->image2 ? "image2 " : "image ")
389 << uint32 (face_num);
390
391 if (ns->image2)
392 sl << uint8 (fallback);
393
394 sl << uint32 (facesets[fallback].faces[face_num].datalen)
395 << data (facesets[fallback].faces[face_num].data, facesets[fallback].faces[face_num].datalen);
396
397 ns->send_packet (sl);
398 }
399
400 ns->faces_sent[face_num] |= NS_FACESENT_FACE;
401}
402
403/**
404 * Sends the number of images, checksum of the face file,
405 * and the image_info file information. See the doc/Developers/protocol
406 * if you want further detail.
407 */
408
409void
410send_image_info (client * ns, char *params)
411{
412 packet sl;
413
414 sl.printf ("replyinfo image_info\n%d\n%d\n", nrofpixmaps - 1, bmaps_checksum);
415
416 for (int i = 0; i < MAX_FACE_SETS; i++)
417 if (facesets[i].prefix)
418 sl.printf ("%d:%s:%s:%d:%s:%s:%s",
419 i, facesets[i].prefix, facesets[i].fullname, facesets[i].fallback,
420 facesets[i].size, facesets[i].extension, facesets[i].comment);
421
422 ns->send_packet (sl);
423}
424
425/**
426 * Sends requested face information.
427 * \param ns socket to send to
428 * \param params contains first and last index of face
429 *
430 * For each image in [start..stop] sends
431 * - checksum
432 * - name
433 */
434void
435send_image_sums (client * ns, char *params)
436{
437 int start, stop;
438 char *cp, buf[MAX_BUF];
439
440 packet sl;
441
442 start = atoi (params);
443 for (cp = params; *cp != '\0'; cp++)
444 if (*cp == ' ')
445 break;
446
447 stop = atoi (cp);
448 if (stop < start || *cp == '\0' || (stop - start) > 1000 || stop >= nrofpixmaps)
449 {
450 sl.printf ("replyinfo image_sums %d %d", start, stop);
451 ns->send_packet (sl);
452 sl.reset ();
453 return;
454 }
455
456 sl.printf ("replyinfo image_sums %d %d ", start, stop);
457
458 for (int i = start; i <= stop; i++)
459 {
460 ns->faces_sent[i] |= NS_FACESENT_FACE;
461
462 int qq = get_face_fallback (ns->faceset, i);
463
464 sl << uint16 (i) 218 sl << uint16 (anim_num)
465 << uint32 (facesets[qq].faces[i].checksum) 219 << uint16 (0); /* flags - not used right now */
466 << uint8 (qq)
467 << data8 (&new_faces[i].name, new_faces[i].name.length () + 1);
468 }
469 220
470 /* It would make more sense to catch this pre-emptively in the code above. 221 /* Build up the list of faces. Also, send any information (ie, the
471 * however, if this really happens, we probably just want to cut down the 222 * the face itself) down to the client.
472 * size to less than 1000, since that is what we claim the protocol would
473 * support.
474 */ 223 */
475 if (sl.length () >= MAXSOCKBUF) 224 for (int i = 0; i < animations[anim_num].num_animations; i++)
476 {
477 LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF);
478 abort ();
479 } 225 {
226 send_face (animations[anim_num].faces[i], -20);
227 sl << uint16 (animations[anim_num].faces[i]);
228 }
480 229
481 ns->send_packet (sl); 230 send_packet (sl);
482}
483 231
232 anims_sent[anim_num] = 1;
233}
234

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