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Comparing deliantra/server/socket/image.C (file contents):
Revision 1.14 by root, Sat Dec 16 03:08:26 2006 UTC vs.
Revision 1.27 by root, Mon Mar 12 23:45:37 2007 UTC

1/* 1/*
2 CrossFire, A Multiplayer game for X-windows 2 * CrossFire, A Multiplayer game
3 3 *
4 * Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team
4 Copyright (C) 2001 Mark Wedel 5 * Copyright (C) 2001 Mark Wedel
5 Copyright (C) 1992 Frank Tore Johansen 6 * Copyright (C) 1992 Frank Tore Johansen
6 7 *
7 This program is free software; you can redistribute it and/or modify 8 * This program is free software; you can redistribute it and/or modify
8 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
9 the Free Software Foundation; either version 2 of the License, or 10 * the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version. 11 * (at your 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 GNU General Public License
18 along with this program; if not, write to the Free Software 19 * along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 21 *
21 The author can be reached via e-mail to <crossfire@schmorp.de> 22 * The author can be reached via e-mail to <crossfire@schmorp.de>
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
39#include "crc.h"
40
38#define MAX_FACE_SETS 20 /**< Maximum number of image sets the program will handle */ 41#define MAX_FACE_SETS 20 /**< Maximum number of image sets the program will handle */
39 42
40/** Information about one image */ 43/** Information about one image */
41typedef struct FaceInfo 44typedef struct FaceInfo
42{ 45{
43
44 uint8 *data; /**< image data */ 46 uint8 *data; /**< image data */
45 uint16 datalen; /**< length of the xpm data */ 47 uint16 datalen; /**< length of the xpm data */
46 uint32 checksum; /**< Checksum of face data */ 48 uint32 checksum; /**< Checksum of face data */
47} FaceInfo; 49} FaceInfo;
48 50
49/** Information about one face set */ 51/** Information about one face set */
50typedef struct 52typedef struct
51{ 53{
52
53 char *prefix; /**< */ 54 char *prefix; /**< */
54 char *fullname; 55 char *fullname;
55 56
56 uint8 fallback; /**< faceset to use when an image is not found in this faceset */ 57 uint8 fallback; /**< faceset to use when an image is not found in this faceset */
57 char *size; 58 char *size;
… …
85 86
86 for (num = 0; num < MAX_FACE_SETS; num++) 87 for (num = 0; num < MAX_FACE_SETS; num++)
87 { 88 {
88 if (facesets[num].prefix) 89 if (facesets[num].prefix)
89 { 90 {
90 for (q = 0; q < nrofpixmaps; q++) 91 for (q = 0; q < faces.size (); q++)
91 if (facesets[num].faces[q].data) 92 if (facesets[num].faces[q].data)
92 free (facesets[num].faces[q].data); 93 free (facesets[num].faces[q].data);
94
93 free (facesets[num].prefix); 95 free (facesets[num].prefix);
94 free (facesets[num].fullname); 96 free (facesets[num].fullname);
95 free (facesets[num].size); 97 free (facesets[num].size);
96 free (facesets[num].extension); 98 free (facesets[num].extension);
97 free (facesets[num].comment); 99 free (facesets[num].comment);
… …
127 if (!facesets[faceset].prefix) 129 if (!facesets[faceset].prefix)
128 { 130 {
129 LOG (llevError, "get_face_fallback called with unused set (%d)?\n", faceset); 131 LOG (llevError, "get_face_fallback called with unused set (%d)?\n", faceset);
130 return 0; /* use default set */ 132 return 0; /* use default set */
131 } 133 }
134
132 if (facesets[faceset].faces[imageno].data) 135 if (facesets[faceset].faces[imageno].data)
133 return faceset; 136 return faceset;
137
134 return get_face_fallback (facesets[faceset].fallback, imageno); 138 return get_face_fallback (facesets[faceset].fallback, imageno);
135} 139}
136 140
137/** 141/**
138 * Checks fallback are correctly defined. 142 * Checks fallback are correctly defined.
… …
154 if (!facesets[fallback].prefix) 158 if (!facesets[fallback].prefix)
155 { 159 {
156 LOG (llevError, "Face set %d falls to non set faceset %d\n", faceset, fallback); 160 LOG (llevError, "Face set %d falls to non set faceset %d\n", faceset, fallback);
157 abort (); 161 abort ();
158 } 162 }
163
159 togo--; 164 togo--;
160 if (togo == 0) 165 if (togo == 0)
161 { 166 {
162 LOG (llevError, "Infinite loop found in facesets. aborting.\n"); 167 LOG (llevError, "Infinite loop found in facesets. aborting.\n");
163 abort (); 168 abort ();
164 } 169 }
170
165 check_faceset_fallback (fallback, togo); 171 check_faceset_fallback (fallback, togo);
166} 172}
167 173
168#define MAX_IMAGE_SIZE 10000 174#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}
303 175
304/** 176/**
305 * Client tells us what type of faces it wants. Also sets 177 * Client tells us what type of faces it wants. Also sets
306 * the caching attribute. 178 * the caching attribute.
307 * 179 *
308 */ 180 */
309
310void 181void
311SetFaceMode (char *buf, int len, client *ns) 182SetFaceMode (char *buf, int len, client *ns)
312{ 183{
313 int mask = (atoi (buf) & CF_FACE_CACHE), mode = (atoi (buf) & ~CF_FACE_CACHE); 184 int mask = (atoi (buf) & CF_FACE_CACHE), mode = (atoi (buf) & ~CF_FACE_CACHE);
314 185
… …
324/** 195/**
325 * Client has requested pixmap that it somehow missed getting. 196 * Client has requested pixmap that it somehow missed getting.
326 * This will be called often if the client is 197 * This will be called often if the client is
327 * caching images. 198 * caching images.
328 */ 199 */
329
330void 200void
331SendFaceCmd (char *buff, int len, client * ns) 201SendFaceCmd (char *buf, int len, client *ns)
332{ 202{
333 long tmpnum = atoi (buff); 203 uint16 facenum = atoi (buf);
334 short facenum = tmpnum & 0xffff;
335 204
336 if (facenum != 0) 205 if (facenum != 0)
337 esrv_send_face (ns, facenum, 1); 206 esrv_send_face (ns, facenum, 1);
207}
208
209// how lame
210static void print_facename (packet &sl, const facedata &d)
211{
212 for (int i = 0; i < CHKSUM_SIZE; ++i)
213 sl.printf ("%02x", d.chksum [i]);
214}
215
216// gcfclient uses the server-provided checksum for comparison,
217// but always wrotes a broken checksum to its cache file, so we
218// have to provide gcfclient with a useless checksum just to
219// have to cache the image despite its bugs.
220static uint32 gcfclient_checksum (const facedata *d)
221{
222 uint32 csum = 0;
223
224 for (std::string::const_iterator i = d->data.begin ();
225 i != d->data.end ();
226 ++i)
227 {
228 csum = rotate_right (csum);
229 csum += *(uint8 *)&*i;
230 }
231
232 return csum;
338} 233}
339 234
340/** 235/**
341 * Sends a face to a client if they are in pixmap mode 236 * Sends a face to a client if they are in pixmap mode
342 * nothing gets sent in bitmap mode. 237 * nothing gets sent in bitmap mode.
343 * If nocache is true (nonzero), ignore the cache setting from the client - 238 * If nocache is true (nonzero), ignore the cache setting from the client -
344 * this is needed for the askface, in which we really do want to send the 239 * this is needed for the askface, in which we really do want to send the
345 * face (and askface is the only place that should be setting it). Otherwise, 240 * face (and askface is the only place that should be setting it). Otherwise,
346 * we look at the facecache, and if set, send the image name. 241 * we look at the facecache, and if set, send the image name.
347 */ 242 */
348
349void 243void
350esrv_send_face (client *ns, short face_num, int nocache) 244esrv_send_face (client *ns, short face_num, int nocache)
351{ 245{
352 char fallback;
353
354 if (face_num <= 0 || face_num >= nrofpixmaps) 246 if (face_num <= 0 || face_num >= faces.size ())
355 { 247 {
356 LOG (llevError, "esrv_send_face (%d) out of bounds??\n", face_num); 248 LOG (llevError, "esrv_send_face (%d) out of bounds??\n", face_num);
357 return; 249 return;
358 } 250 }
359 251
252 const facedata *d = face_data (face_num, ns->faceset);
253
360 packet sl; 254 packet sl;
361 fallback = get_face_fallback (ns->faceset, face_num);
362
363 if (facesets[fallback].faces[face_num].data == NULL)
364 {
365 LOG (llevError, "esrv_send_face: faces[%d].data == NULL\n", face_num);
366 return;
367 }
368 255
369 if (ns->facecache && !nocache) 256 if (ns->facecache && !nocache)
370 { 257 {
371 sl << (ns->image2 ? "face2 " : "face1 ") 258 if (ns->force_face0)
372 << uint16 (face_num); 259 sl << "face " << uint16 (face_num);
373
374 if (ns->image2) 260 else if (ns->image2)
375 sl << uint8 (fallback); 261 sl << "face2 " << uint16 (face_num) << uint8 (0) << uint32 (ns->force_bad_checksum ? gcfclient_checksum (d) : 0);
262 else
263 sl << "face1 " << uint16 (face_num) << uint32 (ns->force_bad_checksum ? gcfclient_checksum (d) : 0);
376 264
377 sl << uint32 (facesets[fallback].faces[face_num].checksum) 265 // how lame
378 << new_faces[face_num].name; 266 print_facename (sl, *d);
379 267
380 ns->send_packet (sl); 268 ns->send_packet (sl);
381 } 269 }
382 else 270 else
383 { 271 {
384 sl << (ns->image2 ? "image2 " : "image ") 272 sl << (ns->image2 ? "image2 " : "image ")
385 << uint32 (face_num); 273 << uint32 (face_num);
386 274
387 if (ns->image2) 275 if (ns->image2)
388 sl << uint8 (fallback); 276 sl << uint8 (0);
389 277
390 sl << uint32 (facesets[fallback].faces[face_num].datalen) 278 sl << uint32 (d->data.size ())
391 << data (facesets[fallback].faces[face_num].data, facesets[fallback].faces[face_num].datalen); 279 << data (d->data.data (), d->data.size ());
392 280
393 ns->send_packet (sl); 281 ns->send_packet (sl);
394 } 282 }
395 283
396 ns->faces_sent[face_num] |= NS_FACESENT_FACE; 284 ns->faces_sent[face_num] |= NS_FACESENT_FACE;
… …
401 * and the image_info file information. See the doc/Developers/protocol 289 * and the image_info file information. See the doc/Developers/protocol
402 * if you want further detail. 290 * if you want further detail.
403 */ 291 */
404 292
405void 293void
406send_image_info (client * ns, char *params) 294send_image_info (client *ns, char *params)
407{ 295{
408 packet sl; 296 packet sl;
409 297
410 sl.printf ("replyinfo image_info\n%d\n%d\n", nrofpixmaps - 1, bmaps_checksum); 298 //TODO: second parameter is a checksum, but it makes no sense in this current framework
299 sl.printf ("replyinfo image_info\n%d\n%u\n", MAX_FACES, 0);
411 300
412 for (int i = 0; i < MAX_FACE_SETS; i++) 301 sl << "0:base:standard:0:32x32:none:The old 32x32 faceset.\n";
413 if (facesets[i].prefix)
414 sl.printf ("%d:%s:%s:%d:%s:%s:%s",
415 i, facesets[i].prefix, facesets[i].fullname, facesets[i].fallback,
416 facesets[i].size, facesets[i].extension, facesets[i].comment);
417 302
418 ns->send_packet (sl); 303 ns->send_packet (sl);
419} 304}
420 305
421/** 306/**
… …
426 * For each image in [start..stop] sends 311 * For each image in [start..stop] sends
427 * - checksum 312 * - checksum
428 * - name 313 * - name
429 */ 314 */
430void 315void
431send_image_sums (client * ns, char *params) 316send_image_sums (client *ns, char *params)
432{ 317{
433 int start, stop; 318 int start, stop;
434 char *cp, buf[MAX_BUF]; 319 char *cp;
435 320
436 packet sl; 321 packet sl;
437 322
438 start = atoi (params); 323 start = atoi (params);
439 for (cp = params; *cp != '\0'; cp++) 324 for (cp = params; *cp != '\0'; cp++)
440 if (*cp == ' ') 325 if (*cp == ' ')
441 break; 326 break;
442 327
443 stop = atoi (cp); 328 stop = atoi (cp);
444 if (stop < start || *cp == '\0' || (stop - start) > 1000 || stop >= nrofpixmaps) 329 if (stop < start || *cp == '\0' || (stop - start) > 1000 || stop >= MAX_FACES)
445 { 330 {
446 sl.printf ("replyinfo image_sums %d %d", start, stop); 331 sl.printf ("replyinfo image_sums %d %d", start, stop);
447 ns->send_packet (sl); 332 ns->send_packet (sl);
448 sl.reset (); 333 sl.reset ();
449 return; 334 return;
450 } 335 }
451 336
452 sl.printf ("replyinfo image_sums %d %d ", start, stop); 337 sl.printf ("replyinfo image_sums %d %d ", start, stop);
453 338
454 for (int i = start; i <= stop; i++) 339 for (int i = start; i <= stop && i < faces.size (); i++)
455 { 340 {
456 ns->faces_sent[i] |= NS_FACESENT_FACE; 341 ns->faces_sent[i] |= NS_FACESENT_FACE;
457 342
458 int qq = get_face_fallback (ns->faceset, i); 343 const facedata *d = face_data (i, ns->faceset);
344
345 if (sl.room () < 2 + 4 + 1 + d->data.size () + 1)
346 break;
459 347
460 sl << uint16 (i) 348 sl << uint16 (i)
461 << uint32 (facesets[qq].faces[i].checksum) 349 << uint32 (0) // checksum
462 << uint8 (qq) 350 << uint8 (ns->faceset);
463 << data8 (&new_faces[i].name, new_faces[i].name.length () + 1); 351
352 print_facename (sl, *d); sl << uint8 (0);
464 } 353 }
465 354
466 /* It would make more sense to catch this pre-emptively in the code above. 355 /* It would make more sense to catch this pre-emptively in the code above.
467 * however, if this really happens, we probably just want to cut down the 356 * however, if this really happens, we probably just want to cut down the
468 * size to less than 1000, since that is what we claim the protocol would 357 * size to less than 1000, since that is what we claim the protocol would
469 * support. 358 * support.
470 */ 359 */
360 //TODO: taken care of above, should simply abort or make sure the above code is correct
471 if (sl.length () >= MAXSOCKBUF) 361 if (sl.length () >= MAXSOCKBUF)
472 { 362 {
473 LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF); 363 LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF);
474 abort (); 364 abort ();
475 } 365 }

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