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Revision 1.9 by root, Thu Dec 14 01:59:10 2006 UTC vs.
Revision 1.67 by root, Tue Jan 3 11:25:37 2012 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 (©) 2005,2006,2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
4 Copyright (C) 2001 Mark Wedel 5 * Copyright (©) 2001 Mark Wedel
5 Copyright (C) 1992 Frank Tore Johansen 6 * Copyright (©) 1992 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#include <newclient.h> 39#include "crc.h"
39#include <newserver.h>
40#include <loader.h>
41 40
42#define MAX_FACE_SETS 20 /**< Maximum number of image sets the program will handle */ 41#define MAX_IMAGE_SIZE 10000
43
44/** Information about one image */
45typedef struct FaceInfo
46{
47
48 uint8 *data; /**< image data */
49
50 uint16 datalen; /**< length of the xpm data */
51
52 uint32 checksum; /**< Checksum of face data */
53} FaceInfo;
54
55/** Information about one face set */
56typedef struct
57{
58
59 char *prefix; /**< */
60 char *fullname;
61
62 uint8 fallback; /**< faceset to use when an image is not found in this faceset */
63 char *size;
64 char *extension;
65 char *comment;
66
67 FaceInfo *faces; /**< images in this faceset */
68} FaceSets;
69
70static FaceSets facesets[MAX_FACE_SETS]; /**< All facesets */
71 42
72/** 43/**
73 * Checks specified faceset is valid 44 * client requested an image. send it rate-limited
74 * \param fsn faceset number 45 * before flushing.
75 */ 46 */
76int
77is_valid_faceset (int fsn)
78{
79 if (fsn >= 0 && fsn < MAX_FACE_SETS && facesets[fsn].prefix)
80 return TRUE;
81 return FALSE;
82}
83
84/**
85 * Frees all faceset information
86 */
87void 47void
88free_socket_images (void) 48AskFaceCmd (char *buf, int len, client *ns)
89{ 49{
90 int num, q; 50 int idx = 0, pri = 0;
91 51
92 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 ())
93 { 72 {
94 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)))
95 { 77 {
96 for (q = 0; q < nrofpixmaps; q++) 78 ++pos;
97 if (facesets[num].faces[q].data) 79 break;
98 free (facesets[num].faces[q].data);
99 free (facesets[num].prefix);
100 free (facesets[num].fullname);
101 free (facesets[num].size);
102 free (facesets[num].extension);
103 free (facesets[num].comment);
104 free (facesets[num].faces);
105 } 80 }
106 } 81 }
107}
108 82
109/** 83 ns->ixface.insert (pos, ix);
110 * This returns the set we will actually use when sending
111 * a face. This is used because the image files may be sparse.
112 * This function is recursive. imageno is the face number we are
113 * trying to send
114 *
115 * If face is not found in specified faceset, tries with 'fallback' faceset.
116 *
117 * \param faceset faceset to check
118 * \param imageno image number
119 *
120 */
121static int
122get_face_fallback (int faceset, int imageno)
123{
124 /* faceset 0 is supposed to have every image, so just return. Doing
125 * so also prevents infinite loops in the case if it not having
126 * the face, but in that case, we are likely to crash when we try
127 * to access the data, but that is probably preferable to an infinite
128 * loop.
129 */
130 if (faceset == 0)
131 return 0;
132 84
133 if (!facesets[faceset].prefix) 85#if 0
134 { 86 for (auto (i, ns->ixface.begin ()); i != ns->ixface.end (); ++i)
135 LOG (llevError, "get_face_fallback called with unused set (%d)?\n", faceset); 87 fprintf (stderr, "<%d,%d> ", i->pri, i->ofs);
136 return 0; /* use default set */ 88 fprintf (stderr, "\n");
137 } 89#endif
138 if (facesets[faceset].faces[imageno].data)
139 return faceset;
140 return get_face_fallback (facesets[faceset].fallback, imageno);
141}
142
143/**
144 * Checks fallback are correctly defined.
145 * This is a simple recursive function that makes sure the fallbacks
146 * are all proper (eg, the fall back to defined sets, and also
147 * eventually fall back to 0). At the top level, togo is set to MAX_FACE_SETS,
148 * if togo gets to zero, it means we have a loop.
149 * This is only run when we first load the facesets.
150 */
151static void
152check_faceset_fallback (int faceset, int togo)
153{
154 int fallback = facesets[faceset].fallback;
155
156 /* proper case - falls back to base set */
157 if (fallback == 0)
158 return;
159
160 if (!facesets[fallback].prefix)
161 {
162 LOG (llevError, "Face set %d falls to non set faceset %d\n", faceset, fallback);
163 abort ();
164 }
165 togo--;
166 if (togo == 0)
167 {
168 LOG (llevError, "Infinite loop found in facesets. aborting.\n");
169 abort ();
170 }
171 check_faceset_fallback (fallback, togo);
172}
173
174#define MAX_IMAGE_SIZE 10000
175
176/**
177 * Loads all the image types into memory.
178 *
179 * This way, we can easily send them to the client. We should really do something
180 * better than abort on any errors - on the other hand, these are all fatal
181 * to the server (can't work around them), but the abort just seems a bit
182 * messy (exit would probably be better.)
183 *
184 * Couple of notes: We assume that the faces are in a continous block.
185 * This works fine for now, but this could perhaps change in the future
186 *
187 * Function largely rewritten May 2000 to be more general purpose.
188 * The server itself does not care what the image data is - to the server,
189 * it is just data it needs to allocate. As such, the code is written
190 * to do such.
191 */
192
193void
194read_client_images (void)
195{
196 char filename[400];
197 char buf[HUGE_BUF];
198 char *cp, *cps[7];
199 FILE *infile;
200 int num, len, compressed, fileno, i, badline;
201
202 memset (facesets, 0, sizeof (facesets));
203 sprintf (filename, "%s/image_info", settings.datadir);
204 if ((infile = open_and_uncompress (filename, 0, &compressed)) == NULL)
205 {
206 LOG (llevError, "Unable to open %s\n", filename);
207 abort ();
208 }
209 while (fgets (buf, HUGE_BUF - 1, infile) != NULL)
210 {
211 badline = 0;
212
213 if (buf[0] == '#')
214 continue;
215 if (!(cps[0] = strtok (buf, ":")))
216 badline = 1;
217 for (i = 1; i < 7; i++)
218 {
219 if (!(cps[i] = strtok (NULL, ":")))
220 badline = 1;
221 }
222 if (badline)
223 {
224 LOG (llevError, "Bad line in image_info file, ignoring line:\n %s", buf);
225 }
226 else
227 {
228 len = atoi (cps[0]);
229 if (len >= MAX_FACE_SETS)
230 {
231 LOG (llevError, "To high a setnum in image_info file: %d > %d\n", len, MAX_FACE_SETS);
232 abort ();
233 }
234 facesets[len].prefix = strdup_local (cps[1]);
235 facesets[len].fullname = strdup_local (cps[2]);
236 facesets[len].fallback = atoi (cps[3]);
237 facesets[len].size = strdup_local (cps[4]);
238 facesets[len].extension = strdup_local (cps[5]);
239 facesets[len].comment = strdup_local (cps[6]);
240 }
241 }
242 close_and_delete (infile, compressed);
243 for (i = 0; i < MAX_FACE_SETS; i++)
244 {
245 if (facesets[i].prefix)
246 check_faceset_fallback (i, MAX_FACE_SETS);
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 facesets[fileno].faces = (FaceInfo *) calloc (nrofpixmaps, sizeof (FaceInfo));
258
259 sprintf (filename, "%s/crossfire.%d", settings.datadir, fileno);
260 LOG (llevDebug, "Loading image file %s\n", filename);
261
262 if ((infile = open_and_uncompress (filename, 0, &compressed)) == NULL)
263 {
264 LOG (llevError, "Unable to open %s\n", filename);
265 abort ();
266 }
267 while (fgets (buf, HUGE_BUF - 1, infile) != NULL)
268 {
269 if (strncmp (buf, "IMAGE ", 6) != 0)
270 {
271 LOG (llevError, "read_client_images:Bad image line - not IMAGE, instead\n%s", buf);
272 abort ();
273 }
274 num = atoi (buf + 6);
275 if (num < 0 || num >= nrofpixmaps)
276 {
277 LOG (llevError, "read_client_images: Image num %d not in 0..%d\n%s", num, nrofpixmaps, buf);
278 abort ();
279 }
280 /* Skip accross the number data */
281 for (cp = buf + 6; *cp != ' '; cp++);
282 len = atoi (cp);
283 if (len == 0 || len > MAX_IMAGE_SIZE)
284 {
285 LOG (llevError, "read_client_images: length not valid: %d > %d \n%s", len, MAX_IMAGE_SIZE, buf);
286 abort ();
287 }
288 /* We don't actualy care about the name of the image that
289 * is embedded in the image file, so just ignore it.
290 */
291 facesets[fileno].faces[num].datalen = len;
292 facesets[fileno].faces[num].data = (uint8 *) malloc (len);
293 if ((i = fread (facesets[fileno].faces[num].data, len, 1, infile)) != 1)
294 {
295 LOG (llevError, "read_client_images: Did not read desired amount of data, wanted %d, got %d\n%s", len, i, buf);
296 abort ();
297 }
298 facesets[fileno].faces[num].checksum = 0;
299 for (i = 0; i < len; i++)
300 {
301 ROTATE_RIGHT (facesets[fileno].faces[num].checksum);
302 facesets[fileno].faces[num].checksum += facesets[fileno].faces[num].data[i];
303 facesets[fileno].faces[num].checksum &= 0xffffffff;
304 }
305 }
306 close_and_delete (infile, compressed);
307 } /* For fileno < MAX_FACE_SETS */
308}
309
310/**
311 * Client tells us what type of faces it wants. Also sets
312 * the caching attribute.
313 *
314 */
315
316void
317SetFaceMode (char *buf, int len, NewSocket *ns)
318{
319 int mask = (atoi (buf) & CF_FACE_CACHE), mode = (atoi (buf) & ~CF_FACE_CACHE);
320
321 if (mode == CF_FACE_NONE)
322 ns->facecache = 1;
323 else if (mode != CF_FACE_PNG)
324 {
325 packet sl;
326 sl.printf ("drawinfo %d %s", NDI_RED, "Warning - send unsupported face mode. Will use Png");
327 ns->send_packet (sl);
328 }
329
330 if (mask)
331 ns->facecache = 1;
332}
333
334/**
335 * Client has requested pixmap that it somehow missed getting.
336 * This will be called often if the client is
337 * caching images.
338 */
339
340void
341SendFaceCmd (char *buff, int len, NewSocket * ns)
342{
343 long tmpnum = atoi (buff);
344 short facenum = tmpnum & 0xffff;
345
346 if (facenum != 0)
347 esrv_send_face (ns, facenum, 1);
348} 90}
349 91
350/** 92/**
351 * 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
352 * nothing gets sent in bitmap mode. 94 * nothing gets sent in bitmap mode.
353 * 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 -
354 * 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
355 * 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,
356 * 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.
357 */ 99 */
358
359void 100void
360esrv_send_face (NewSocket *ns, short face_num, int nocache) 101client::send_face (faceidx facenum, int pri)
361{ 102{
362 char fallback; 103 // never send face 0. ever. it does not exist.
104 if (!facenum)
105 return;
363 106
364 if (face_num <= 0 || face_num >= nrofpixmaps) 107 faceinfo *f = face_info (facenum);
108
109 if (!f)
365 { 110 {
366 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);
367 return; 112 return;
368 } 113 }
369 114
370 packet sl; 115 // refuse to send non-image faces
371 fallback = get_face_fallback (ns->faceset, face_num); 116 if (!fx_want [f->type])
117 return;
372 118
373 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, d->chksum_len);
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_MAXLEN + 1 + 3 /* type switch */
171 && sx.room () > ber32::size * 3);
172
173 send_packet (fx);
174 if (sx.length () > 3) send_packet (sx);
374 { 175 }
375 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);
376 return; 213 return;
377 } 214 }
378 215
379 if (ns->facecache && !nocache) 216 packet sl ("anim");
380 {
381 sl << (ns->image2 ? "face2 " : "face1 ")
382 << uint16 (face_num);
383 217
384 if (ns->image2)
385 sl << uint8 (fallback);
386
387 sl << uint32 (facesets[fallback].faces[face_num].checksum)
388 << new_faces[face_num].name;
389
390 Send_With_Handling (ns, &sl);
391 }
392 else
393 {
394 sl << (ns->image2 ? "image2 " : "image ")
395 << uint32 (face_num);
396
397 if (ns->image2)
398 sl << uint8 (fallback);
399
400 sl << uint32 (facesets[fallback].faces[face_num].datalen)
401 << data (facesets[fallback].faces[face_num].data, facesets[fallback].faces[face_num].datalen);
402
403 Send_With_Handling (ns, &sl);
404 }
405
406 ns->faces_sent[face_num] |= NS_FACESENT_FACE;
407}
408
409/**
410 * Sends the number of images, checksum of the face file,
411 * and the image_info file information. See the doc/Developers/protocol
412 * if you want further detail.
413 */
414
415void
416send_image_info (NewSocket * ns, char *params)
417{
418 packet sl;
419
420 sl.printf ("replyinfo image_info\n%d\n%d\n", nrofpixmaps - 1, bmaps_checksum);
421
422 for (int i = 0; i < MAX_FACE_SETS; i++)
423 if (facesets[i].prefix)
424 sl.printf ("%d:%s:%s:%d:%s:%s:%s",
425 i, facesets[i].prefix, facesets[i].fullname, facesets[i].fallback,
426 facesets[i].size, facesets[i].extension, facesets[i].comment);
427
428 Send_With_Handling (ns, &sl);
429}
430
431/**
432 * Sends requested face information.
433 * \param ns socket to send to
434 * \param params contains first and last index of face
435 *
436 * For each image in [start..stop] sends
437 * - checksum
438 * - name
439 */
440void
441send_image_sums (NewSocket * ns, char *params)
442{
443 int start, stop;
444 char *cp, buf[MAX_BUF];
445
446 packet sl;
447
448 start = atoi (params);
449 for (cp = params; *cp != '\0'; cp++)
450 if (*cp == ' ')
451 break;
452
453 stop = atoi (cp);
454 if (stop < start || *cp == '\0' || (stop - start) > 1000 || stop >= nrofpixmaps)
455 {
456 sl.printf ("replyinfo image_sums %d %d", start, stop);
457 ns->send_packet (sl);
458 sl.reset ();
459 return;
460 }
461
462 sl.printf ("replyinfo image_sums %d %d ", start, stop);
463
464 for (int i = start; i <= stop; i++)
465 {
466 ns->faces_sent[i] |= NS_FACESENT_FACE;
467
468 int qq = get_face_fallback (ns->faceset, i);
469
470 sl << uint16 (i) 218 sl << uint16 (anim_num)
471 << uint32 (facesets[qq].faces[i].checksum) 219 << uint16 (0); /* flags - not used right now */
472 << uint8 (qq)
473 << data8 (&new_faces[i].name, new_faces[i].name.length () + 1);
474 }
475 220
476 /* 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
477 * however, if this really happens, we probably just want to cut down the 222 * the face itself) down to the client.
478 * size to less than 1000, since that is what we claim the protocol would
479 * support.
480 */ 223 */
481 if (sl.length () >= MAXSOCKBUF) 224 for (int i = 0; i < animations[anim_num].num_animations; i++)
482 {
483 LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF);
484 abort ();
485 } 225 {
226 send_face (animations[anim_num].faces[i], -20);
227 sl << uint16 (animations[anim_num].faces[i]);
228 }
486 229
487 Send_With_Handling (ns, &sl); 230 send_packet (sl);
488}
489 231
232 anims_sent[anim_num] = 1;
233}
234
235void
236client::invalidate_face (faceidx idx)
237{
238 faces_sent [idx] = false;
239 force_newmap = true;
240}
241
242void
243client::invalidate_all_faces ()
244{
245 faces_sent.reset ();
246 force_newmap = true;
247}
248

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