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Comparing deliantra/server/socket/image.C (file contents):
Revision 1.12 by root, Thu Dec 14 22:45:41 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
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_FACE_SETS 20 /**< Maximum number of image sets the program will handle */
43 42
44/** Information about one image */ 43/** Information about one image */
45typedef struct FaceInfo 44typedef struct FaceInfo
46{ 45{
47
48 uint8 *data; /**< image data */ 46 uint8 *data; /**< image data */
49
50 uint16 datalen; /**< length of the xpm data */ 47 uint16 datalen; /**< length of the xpm data */
51
52 uint32 checksum; /**< Checksum of face data */ 48 uint32 checksum; /**< Checksum of face data */
53} FaceInfo; 49} FaceInfo;
54 50
55/** Information about one face set */ 51/** Information about one face set */
56typedef struct 52typedef struct
57{ 53{
58
59 char *prefix; /**< */ 54 char *prefix; /**< */
60 char *fullname; 55 char *fullname;
61 56
62 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 */
63 char *size; 58 char *size;
… …
91 86
92 for (num = 0; num < MAX_FACE_SETS; num++) 87 for (num = 0; num < MAX_FACE_SETS; num++)
93 { 88 {
94 if (facesets[num].prefix) 89 if (facesets[num].prefix)
95 { 90 {
96 for (q = 0; q < nrofpixmaps; q++) 91 for (q = 0; q < faces.size (); q++)
97 if (facesets[num].faces[q].data) 92 if (facesets[num].faces[q].data)
98 free (facesets[num].faces[q].data); 93 free (facesets[num].faces[q].data);
94
99 free (facesets[num].prefix); 95 free (facesets[num].prefix);
100 free (facesets[num].fullname); 96 free (facesets[num].fullname);
101 free (facesets[num].size); 97 free (facesets[num].size);
102 free (facesets[num].extension); 98 free (facesets[num].extension);
103 free (facesets[num].comment); 99 free (facesets[num].comment);
… …
133 if (!facesets[faceset].prefix) 129 if (!facesets[faceset].prefix)
134 { 130 {
135 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);
136 return 0; /* use default set */ 132 return 0; /* use default set */
137 } 133 }
134
138 if (facesets[faceset].faces[imageno].data) 135 if (facesets[faceset].faces[imageno].data)
139 return faceset; 136 return faceset;
137
140 return get_face_fallback (facesets[faceset].fallback, imageno); 138 return get_face_fallback (facesets[faceset].fallback, imageno);
141} 139}
142 140
143/** 141/**
144 * Checks fallback are correctly defined. 142 * Checks fallback are correctly defined.
… …
160 if (!facesets[fallback].prefix) 158 if (!facesets[fallback].prefix)
161 { 159 {
162 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);
163 abort (); 161 abort ();
164 } 162 }
163
165 togo--; 164 togo--;
166 if (togo == 0) 165 if (togo == 0)
167 { 166 {
168 LOG (llevError, "Infinite loop found in facesets. aborting.\n"); 167 LOG (llevError, "Infinite loop found in facesets. aborting.\n");
169 abort (); 168 abort ();
170 } 169 }
170
171 check_faceset_fallback (fallback, togo); 171 check_faceset_fallback (fallback, togo);
172} 172}
173 173
174#define MAX_IMAGE_SIZE 10000 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 (cps[1]);
235 facesets[len].fullname = strdup (cps[2]);
236 facesets[len].fallback = atoi (cps[3]);
237 facesets[len].size = strdup (cps[4]);
238 facesets[len].extension = strdup (cps[5]);
239 facesets[len].comment = strdup (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}
309 175
310/** 176/**
311 * Client tells us what type of faces it wants. Also sets 177 * Client tells us what type of faces it wants. Also sets
312 * the caching attribute. 178 * the caching attribute.
313 * 179 *
314 */ 180 */
315
316void 181void
317SetFaceMode (char *buf, int len, client_socket *ns) 182SetFaceMode (char *buf, int len, client *ns)
318{ 183{
319 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);
320 185
321 if (mode == CF_FACE_NONE) 186 if (mode == CF_FACE_NONE)
322 ns->facecache = 1; 187 ns->facecache = 1;
323 else if (mode != CF_FACE_PNG) 188 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"); 189 ns->send_packet_printf ("drawinfo %d %s", NDI_RED, "Warning - send unsupported face mode. Will use Png");
327 ns->send_packet (sl);
328 }
329 190
330 if (mask) 191 if (mask)
331 ns->facecache = 1; 192 ns->facecache = 1;
332} 193}
333 194
334/** 195/**
335 * Client has requested pixmap that it somehow missed getting. 196 * Client has requested pixmap that it somehow missed getting.
336 * This will be called often if the client is 197 * This will be called often if the client is
337 * caching images. 198 * caching images.
338 */ 199 */
339
340void 200void
341SendFaceCmd (char *buff, int len, client_socket * ns) 201SendFaceCmd (char *buf, int len, client *ns)
342{ 202{
343 long tmpnum = atoi (buff); 203 uint16 facenum = atoi (buf);
344 short facenum = tmpnum & 0xffff;
345 204
346 if (facenum != 0) 205 if (facenum != 0)
347 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;
348} 233}
349 234
350/** 235/**
351 * 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
352 * nothing gets sent in bitmap mode. 237 * nothing gets sent in bitmap mode.
353 * 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 -
354 * 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
355 * 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,
356 * 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.
357 */ 242 */
358
359void 243void
360esrv_send_face (client_socket *ns, short face_num, int nocache) 244esrv_send_face (client *ns, short face_num, int nocache)
361{ 245{
362 char fallback;
363
364 if (face_num <= 0 || face_num >= nrofpixmaps) 246 if (face_num <= 0 || face_num >= faces.size ())
365 { 247 {
366 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);
367 return; 249 return;
368 } 250 }
369 251
252 const facedata *d = face_data (face_num, ns->faceset);
253
370 packet sl; 254 packet sl;
371 fallback = get_face_fallback (ns->faceset, face_num);
372
373 if (facesets[fallback].faces[face_num].data == NULL)
374 {
375 LOG (llevError, "esrv_send_face: faces[%d].data == NULL\n", face_num);
376 return;
377 }
378 255
379 if (ns->facecache && !nocache) 256 if (ns->facecache && !nocache)
380 { 257 {
381 sl << (ns->image2 ? "face2 " : "face1 ") 258 if (ns->force_face0)
382 << uint16 (face_num); 259 sl << "face " << uint16 (face_num);
383
384 if (ns->image2) 260 else if (ns->image2)
385 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);
386 264
387 sl << uint32 (facesets[fallback].faces[face_num].checksum) 265 // how lame
388 << new_faces[face_num].name; 266 print_facename (sl, *d);
389 267
390 ns->send_packet (sl); 268 ns->send_packet (sl);
391 } 269 }
392 else 270 else
393 { 271 {
394 sl << (ns->image2 ? "image2 " : "image ") 272 sl << (ns->image2 ? "image2 " : "image ")
395 << uint32 (face_num); 273 << uint32 (face_num);
396 274
397 if (ns->image2) 275 if (ns->image2)
398 sl << uint8 (fallback); 276 sl << uint8 (0);
399 277
400 sl << uint32 (facesets[fallback].faces[face_num].datalen) 278 sl << uint32 (d->data.size ())
401 << data (facesets[fallback].faces[face_num].data, facesets[fallback].faces[face_num].datalen); 279 << data (d->data.data (), d->data.size ());
402 280
403 ns->send_packet (sl); 281 ns->send_packet (sl);
404 } 282 }
405 283
406 ns->faces_sent[face_num] |= NS_FACESENT_FACE; 284 ns->faces_sent[face_num] |= NS_FACESENT_FACE;
… …
411 * and the image_info file information. See the doc/Developers/protocol 289 * and the image_info file information. See the doc/Developers/protocol
412 * if you want further detail. 290 * if you want further detail.
413 */ 291 */
414 292
415void 293void
416send_image_info (client_socket * ns, char *params) 294send_image_info (client *ns, char *params)
417{ 295{
418 packet sl; 296 packet sl;
419 297
420 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);
421 300
422 for (int i = 0; i < MAX_FACE_SETS; i++) 301 sl << "0:base:standard:0:32x32:none:The old 32x32 faceset.\n";
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);
427 302
428 ns->send_packet (sl); 303 ns->send_packet (sl);
429} 304}
430 305
431/** 306/**
… …
436 * For each image in [start..stop] sends 311 * For each image in [start..stop] sends
437 * - checksum 312 * - checksum
438 * - name 313 * - name
439 */ 314 */
440void 315void
441send_image_sums (client_socket * ns, char *params) 316send_image_sums (client *ns, char *params)
442{ 317{
443 int start, stop; 318 int start, stop;
444 char *cp, buf[MAX_BUF]; 319 char *cp;
445 320
446 packet sl; 321 packet sl;
447 322
448 start = atoi (params); 323 start = atoi (params);
449 for (cp = params; *cp != '\0'; cp++) 324 for (cp = params; *cp != '\0'; cp++)
450 if (*cp == ' ') 325 if (*cp == ' ')
451 break; 326 break;
452 327
453 stop = atoi (cp); 328 stop = atoi (cp);
454 if (stop < start || *cp == '\0' || (stop - start) > 1000 || stop >= nrofpixmaps) 329 if (stop < start || *cp == '\0' || (stop - start) > 1000 || stop >= MAX_FACES)
455 { 330 {
456 sl.printf ("replyinfo image_sums %d %d", start, stop); 331 sl.printf ("replyinfo image_sums %d %d", start, stop);
457 ns->send_packet (sl); 332 ns->send_packet (sl);
458 sl.reset (); 333 sl.reset ();
459 return; 334 return;
460 } 335 }
461 336
462 sl.printf ("replyinfo image_sums %d %d ", start, stop); 337 sl.printf ("replyinfo image_sums %d %d ", start, stop);
463 338
464 for (int i = start; i <= stop; i++) 339 for (int i = start; i <= stop && i < faces.size (); i++)
465 { 340 {
466 ns->faces_sent[i] |= NS_FACESENT_FACE; 341 ns->faces_sent[i] |= NS_FACESENT_FACE;
467 342
468 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;
469 347
470 sl << uint16 (i) 348 sl << uint16 (i)
471 << uint32 (facesets[qq].faces[i].checksum) 349 << uint32 (0) // checksum
472 << uint8 (qq) 350 << uint8 (ns->faceset);
473 << data8 (&new_faces[i].name, new_faces[i].name.length () + 1); 351
352 print_facename (sl, *d); sl << uint8 (0);
474 } 353 }
475 354
476 /* 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.
477 * 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
478 * 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
479 * support. 358 * support.
480 */ 359 */
360 //TODO: taken care of above, should simply abort or make sure the above code is correct
481 if (sl.length () >= MAXSOCKBUF) 361 if (sl.length () >= MAXSOCKBUF)
482 { 362 {
483 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);
484 abort (); 364 abort ();
485 } 365 }

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