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Comparing deliantra/server/socket/image.C (file contents):
Revision 1.2 by root, Tue Aug 29 08:01:38 2006 UTC vs.
Revision 1.67 by root, Tue Jan 3 11:25:37 2012 UTC

1/* 1/*
2 * static char *rcsid_init_c = 2 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
3 * "$Id: image.C,v 1.2 2006/08/29 08:01:38 root Exp $"; 3 *
4 */ 4 * Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5
6/*
7 CrossFire, A Multiplayer game for X-windows
8
9 Copyright (C) 2001 Mark Wedel 5 * Copyright (©) 2001 Mark Wedel
10 Copyright (C) 1992 Frank Tore Johansen 6 * Copyright (©) 1992 Frank Tore Johansen
11 7 *
12 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
13 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
14 the Free Software Foundation; either version 2 of the License, or 10 * Free Software Foundation, either version 3 of the License, or (at your
15 (at your option) any later version. 11 * option) any later version.
16 12 *
17 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,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details. 16 * GNU General Public License for more details.
21 17 *
22 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
23 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
24 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 * <http://www.gnu.org/licenses/>.
25 21 *
26 The author can be reached via e-mail to crossfire-devel@real-time.com 22 * The authors can be reached via e-mail to <support@deliantra.net>
27*/ 23 */
28 24
29/** \file 25/** \file
30 * Image related communication 26 * Image related communication
31 * 27 *
32 * \date 2003-12-02 28 * \date 2003-12-02
… …
38 */ 34 */
39 35
40#include <global.h> 36#include <global.h>
41#include <sproto.h> 37#include <sproto.h>
42 38
43#include <newclient.h> 39#include "crc.h"
44#include <newserver.h>
45#include <loader.h>
46 40
47#define MAX_FACE_SETS 20 /**< Maximum number of image sets the program will handle */ 41#define MAX_IMAGE_SIZE 10000
48
49/** Information about one image */
50typedef struct FaceInfo {
51 uint8 *data; /**< image data */
52 uint16 datalen; /**< length of the xpm data */
53 uint32 checksum; /**< Checksum of face data */
54} FaceInfo;
55
56/** Information about one face set */
57typedef struct {
58 char *prefix; /**< */
59 char *fullname;
60 uint8 fallback; /**< faceset to use when an image is not found in this faceset */
61 char *size;
62 char *extension;
63 char *comment;
64 FaceInfo *faces; /**< images in this faceset */
65} FaceSets;
66
67static FaceSets facesets[MAX_FACE_SETS]; /**< All facesets */
68 42
69/** 43/**
70 * Checks specified faceset is valid 44 * client requested an image. send it rate-limited
71 * \param fsn faceset number 45 * before flushing.
72 */ 46 */
73int is_valid_faceset(int fsn) 47void
48AskFaceCmd (char *buf, int len, client *ns)
74{ 49{
75 if (fsn >=0 && fsn < MAX_FACE_SETS && facesets[fsn].prefix) return TRUE; 50 int idx = 0, pri = 0;
76 return FALSE;
77}
78 51
79/** 52 sscanf (buf, "%d %d", &idx, &pri);
80 * Frees all faceset information
81 */
82void free_socket_images(void)
83{
84 int num,q;
85 53
86 for(num=0;num<MAX_FACE_SETS; num++) { 54 //TODO: somehow fetch default priority from send_fx here
87 if (facesets[num].prefix) { 55
88 for (q=0; q<nrofpixmaps; q++) 56 const facedata *d = face_data (idx, ns->faceset);
89 if (facesets[num].faces[q].data) free(facesets[num].faces[q].data); 57
90 free(facesets[num].prefix); 58 if (!d)
91 free(facesets[num].fullname); 59 return; // doh
92 free(facesets[num].size); 60
93 free(facesets[num].extension); 61 client::ixsend ix;
94 free(facesets[num].comment); 62
95 free(facesets[num].faces); 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 ())
72 {
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)))
77 {
78 ++pos;
79 break;
96 } 80 }
97 } 81 }
98}
99 82
100/** 83 ns->ixface.insert (pos, ix);
101 * This returns the set we will actually use when sending
102 * a face. This is used because the image files may be sparse.
103 * This function is recursive. imageno is the face number we are
104 * trying to send
105 *
106 * If face is not found in specified faceset, tries with 'fallback' faceset.
107 *
108 * \param faceset faceset to check
109 * \param imageno image number
110 *
111 */
112static int get_face_fallback(int faceset, int imageno)
113{
114 /* faceset 0 is supposed to have every image, so just return. Doing
115 * so also prevents infinite loops in the case if it not having
116 * the face, but in that case, we are likely to crash when we try
117 * to access the data, but that is probably preferable to an infinite
118 * loop.
119 */
120 if (faceset==0) return 0;
121 84
122 if (!facesets[faceset].prefix) { 85#if 0
123 LOG(llevError,"get_face_fallback called with unused set (%d)?\n", faceset); 86 for (auto (i, ns->ixface.begin ()); i != ns->ixface.end (); ++i)
124 return 0; /* use default set */ 87 fprintf (stderr, "<%d,%d> ", i->pri, i->ofs);
125 } 88 fprintf (stderr, "\n");
126 if (facesets[faceset].faces[imageno].data) return faceset;
127 return get_face_fallback(facesets[faceset].fallback, imageno);
128}
129
130/**
131 * Checks fallback are correctly defined.
132 * This is a simple recursive function that makes sure the fallbacks
133 * are all proper (eg, the fall back to defined sets, and also
134 * eventually fall back to 0). At the top level, togo is set to MAX_FACE_SETS,
135 * if togo gets to zero, it means we have a loop.
136 * This is only run when we first load the facesets.
137 */
138static void check_faceset_fallback(int faceset, int togo)
139{
140 int fallback = facesets[faceset].fallback;
141
142 /* proper case - falls back to base set */
143 if (fallback == 0) return;
144
145 if (!facesets[fallback].prefix) {
146 LOG(llevError,"Face set %d falls to non set faceset %d\n", faceset, fallback);
147 abort();
148 }
149 togo--;
150 if (togo == 0) {
151 LOG(llevError,"Infinite loop found in facesets. aborting.\n");
152 abort();
153 }
154 check_faceset_fallback(fallback, togo);
155}
156
157#define MAX_IMAGE_SIZE 10000
158
159/**
160 * Loads all the image types into memory.
161 *
162 * This way, we can easily send them to the client. We should really do something
163 * better than abort on any errors - on the other hand, these are all fatal
164 * to the server (can't work around them), but the abort just seems a bit
165 * messy (exit would probably be better.)
166 *
167 * Couple of notes: We assume that the faces are in a continous block.
168 * This works fine for now, but this could perhaps change in the future
169 *
170 * Function largely rewritten May 2000 to be more general purpose.
171 * The server itself does not care what the image data is - to the server,
172 * it is just data it needs to allocate. As such, the code is written
173 * to do such.
174 */
175
176void read_client_images(void)
177{
178 char filename[400];
179 char buf[HUGE_BUF];
180 char *cp, *cps[7];
181 FILE *infile;
182 int num,len,compressed, fileno,i, badline;
183
184 memset(facesets, 0, sizeof(facesets));
185 sprintf(filename,"%s/image_info",settings.datadir);
186 if ((infile=open_and_uncompress(filename, 0, &compressed))==NULL) {
187 LOG(llevError,"Unable to open %s\n", filename);
188 abort();
189 }
190 while (fgets(buf, HUGE_BUF-1, infile)!=NULL) {
191 badline=0;
192
193 if (buf[0] == '#') continue;
194 if (!(cps[0] = strtok(buf, ":"))) badline=1;
195 for (i=1; i<7; i++) {
196 if (!(cps[i] = strtok(NULL, ":"))) badline=1;
197 }
198 if (badline) {
199 LOG(llevError,"Bad line in image_info file, ignoring line:\n %s", buf);
200 } else {
201 len = atoi(cps[0]);
202 if (len >=MAX_FACE_SETS) {
203 LOG(llevError,"To high a setnum in image_info file: %d > %d\n",
204 len, MAX_FACE_SETS);
205 abort();
206 }
207 facesets[len].prefix = strdup_local(cps[1]);
208 facesets[len].fullname = strdup_local(cps[2]);
209 facesets[len].fallback = atoi(cps[3]);
210 facesets[len].size = strdup_local(cps[4]);
211 facesets[len].extension = strdup_local(cps[5]);
212 facesets[len].comment = strdup_local(cps[6]);
213 }
214 }
215 close_and_delete(infile,compressed);
216 for (i=0; i<MAX_FACE_SETS; i++) {
217 if (facesets[i].prefix) check_faceset_fallback(i, MAX_FACE_SETS);
218 }
219 /* Loaded the faceset information - now need to load up the
220 * actual faces.
221 */
222
223 for (fileno=0; fileno<MAX_FACE_SETS; fileno++) {
224 /* if prefix is not set, this is not used */
225 if (!facesets[fileno].prefix) continue;
226 facesets[fileno].faces = (FaceInfo *) calloc(nrofpixmaps, sizeof(FaceInfo));
227
228 sprintf(filename,"%s/crossfire.%d",settings.datadir, fileno);
229 LOG(llevDebug,"Loading image file %s\n", filename);
230
231 if ((infile = open_and_uncompress(filename,0,&compressed))==NULL) {
232 LOG(llevError,"Unable to open %s\n", filename);
233 abort();
234 }
235 while(fgets(buf, HUGE_BUF-1, infile)!=NULL) {
236 if(strncmp(buf,"IMAGE ",6)!=0) {
237 LOG(llevError,"read_client_images:Bad image line - not IMAGE, instead\n%s",buf);
238 abort();
239 }
240 num = atoi(buf+6);
241 if (num<0 || num>=nrofpixmaps) {
242 LOG(llevError,"read_client_images: Image num %d not in 0..%d\n%s",
243 num,nrofpixmaps,buf);
244 abort();
245 }
246 /* Skip accross the number data */
247 for (cp=buf+6; *cp!=' '; cp++) ;
248 len = atoi(cp);
249 if (len==0 || len>MAX_IMAGE_SIZE) {
250 LOG(llevError,"read_client_images: length not valid: %d > %d \n%s",
251 len,MAX_IMAGE_SIZE,buf);
252 abort();
253 }
254 /* We don't actualy care about the name if the image that
255 * is embedded in the image file, so just ignore it.
256 */
257 facesets[fileno].faces[num].datalen = len;
258 facesets[fileno].faces[num].data = (uint8*) malloc(len);
259 if ((i=fread(facesets[fileno].faces[num].data, len, 1, infile))!=1) {
260 LOG(llevError,"read_client_images: Did not read desired amount of data, wanted %d, got %d\n%s",
261 len, i, buf);
262 abort();
263 }
264 facesets[fileno].faces[num].checksum=0;
265 for (i=0; i<len; i++) {
266 ROTATE_RIGHT(facesets[fileno].faces[num].checksum);
267 facesets[fileno].faces[num].checksum += facesets[fileno].faces[num].data[i];
268 facesets[fileno].faces[num].checksum &= 0xffffffff;
269 }
270 }
271 close_and_delete(infile,compressed);
272 } /* For fileno < MAX_FACE_SETS */
273}
274
275/**
276 * Client tells us what type of faces it wants. Also sets
277 * the caching attribute.
278 *
279 */
280
281void SetFaceMode(char *buf, int len, NewSocket *ns)
282{
283 char tmp[256];
284
285 int mask =(atoi(buf) & CF_FACE_CACHE), mode=(atoi(buf) & ~CF_FACE_CACHE);
286
287 if (mode==CF_FACE_NONE) {
288 ns->facecache=1;
289 } else if (mode!=CF_FACE_PNG) {
290 sprintf(tmp,"drawinfo %d %s", NDI_RED,"Warning - send unsupported face mode. Will use Png");
291 Write_String_To_Socket(ns, tmp, strlen(tmp));
292#ifdef ESRV_DEBUG
293 LOG(llevDebug,"SetFaceMode: Invalid mode from client: %d\n", mode);
294#endif 89#endif
295 }
296 if (mask) {
297 ns->facecache=1;
298 }
299}
300
301/**
302 * Client has requested pixmap that it somehow missed getting.
303 * This will be called often if the client is
304 * caching images.
305 */
306
307void SendFaceCmd(char *buff, int len, NewSocket *ns)
308{
309 long tmpnum = atoi(buff);
310 short facenum=tmpnum & 0xffff;
311
312 if(facenum!=0)
313 esrv_send_face(ns, facenum,1);
314} 90}
315 91
316/** 92/**
317 * 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
318 * nothing gets sent in bitmap mode. 94 * nothing gets sent in bitmap mode.
319 * 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 -
320 * 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
321 * 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,
322 * 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.
323 */ 99 */
324 100void
325void esrv_send_face(NewSocket *ns,short face_num, int nocache) 101client::send_face (faceidx facenum, int pri)
326{ 102{
327 SockList sl; 103 // never send face 0. ever. it does not exist.
328 char fallback; 104 if (!facenum)
105 return;
329 106
330 if (face_num <= 0 || face_num >= nrofpixmaps) { 107 faceinfo *f = face_info (facenum);
108
109 if (!f)
110 {
331 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);
332 return; 112 return;
333 } 113 }
334 114
335 sl.buf = (unsigned char*) malloc(MAXSOCKBUF); 115 // refuse to send non-image faces
336 fallback = get_face_fallback(ns->faceset, face_num); 116 if (!fx_want [f->type])
337
338 if (facesets[fallback].faces[face_num].data == NULL) {
339 LOG(llevError,"esrv_send_face: faces[%d].data == NULL\n",face_num);
340 return; 117 return;
118
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 ())
341 } 130 {
131 packet fx ("fx");
132 packet sx ("sx");
133 int type = 0;
342 134
343 if (ns->facecache && !nocache) { 135 do
344 if (ns->image2)
345 strcpy((char*)sl.buf, "face2 ");
346 else if (ns->sc_version >= 1026)
347 strcpy((char*)sl.buf, "face1 ");
348 else 136 {
349 strcpy((char*)sl.buf, "face "); 137 faceidx facenum = fxface.back (); fxface.pop_back ();
350 138
351 sl.len=strlen((const char*)sl.buf); 139 if (const faceinfo *f = face_info (facenum))
352 SockList_AddShort(&sl, face_num); 140 {
353 if (ns->image2) 141 if (f->type != type)
354 SockList_AddChar(&sl, fallback); 142 {
355 if (ns->sc_version >= 1026) 143 type = f->type;
356 SockList_AddInt(&sl, facesets[fallback].faces[face_num].checksum); 144
357 strcpy((char*)sl.buf + sl.len, new_faces[face_num].name); 145 fx << ber32 (0)
358 sl.len += strlen(new_faces[face_num].name); 146 << uint8 (1) << uint8 (type);
359 Send_With_Handling(ns, &sl); 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);
175 }
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)
360 } 188 {
361 else { 189 const animation &anim = ob->anim ();
362 if (ns->image2) 190
363 strcpy((char*)sl.buf, "image2 "); 191 for (int i = 0; i < anim.num_animations; i++)
364 else 192 send_face (anim.faces [i], -10);
365 strcpy((char*)sl.buf, "image ");
366 sl.len=strlen((char*)sl.buf);
367 SockList_AddInt(&sl, face_num);
368 if (ns->image2)
369 SockList_AddChar(&sl, fallback);
370 SockList_AddInt(&sl, facesets[fallback].faces[face_num].datalen);
371 memcpy(sl.buf+sl.len, facesets[fallback].faces[face_num].data,
372 facesets[fallback].faces[face_num].datalen);
373 sl.len += facesets[fallback].faces[face_num].datalen;
374 Send_With_Handling(ns, &sl);
375 } 193 }
376 ns->faces_sent[face_num] |= NS_FACESENT_FACE;
377 free(sl.buf);
378} 194}
379 195
380/** 196/**
381 * Sends the number of images, checksum of the face file, 197 * Need to send an animation sequence to the client.
382 * and the image_info file information. See the doc/Developers/protocol 198 * We will send appropriate face commands to the client if we haven't
383 * if you want further detail. 199 * sent them the face yet (this can become quite costly in terms of
384 */ 200 * how much we are sending - on the other hand, this should only happen
385 201 * when the player logs in and picks stuff up.
386void send_image_info(NewSocket *ns, char *params)
387{
388 SockList sl;
389 int i;
390
391 sl.buf = (unsigned char *) malloc(MAXSOCKBUF);
392
393 sprintf((char*)sl.buf,"replyinfo image_info\n%d\n%d\n", nrofpixmaps-1, bmaps_checksum);
394 for (i=0; i<MAX_FACE_SETS; i++) {
395 if (facesets[i].prefix) {
396 sprintf((char*)sl.buf + strlen((const char*)sl.buf), "%d:%s:%s:%d:%s:%s:%s",
397 i, facesets[i].prefix, facesets[i].fullname, facesets[i].fallback,
398 facesets[i].size, facesets[i].extension, facesets[i].comment);
399 }
400 }
401 sl.len = strlen((const char*)sl.buf);
402 Send_With_Handling(ns, &sl);
403 free(sl.buf);
404}
405
406/**
407 * Sends requested face information.
408 * \param ns socket to send to
409 * \param params contains first and last index of face
410 * 202 */
411 * For each image in [start..stop] sends 203void
412 * - checksum 204client::send_animation (short anim_num)
413 * - name 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.
414 */ 209 */
415void send_image_sums(NewSocket *ns, char *params) 210 if (anim_num < 0 || anim_num >= animations.size ())
416{ 211 {
417 int start, stop; 212 LOG (llevError, "esrv_send_anim (%d) out of bounds??\n", anim_num);
418 short i;
419 char qq;
420 char *cp, buf[MAX_BUF];
421 SockList sl;
422
423 sl.buf = (unsigned char *) malloc(MAXSOCKBUF);
424
425 start = atoi(params);
426 for (cp = params; *cp != '\0'; cp++)
427 if (*cp == ' ') break;
428
429 stop = atoi(cp);
430 if (stop < start || *cp == '\0' || (stop-start)>1000 || stop >= nrofpixmaps) {
431 sprintf(buf,"replyinfo image_sums %d %d", start, stop);
432 cs_write_string(ns, buf, strlen(buf));
433 return; 213 return;
434 } 214 }
435 sprintf((char*)sl.buf,"replyinfo image_sums %d %d ", start, stop);
436 215
437 sl.len = strlen((const char*)sl.buf); 216 packet sl ("anim");
438 217
439 for (i=start; i<=stop; i++) { 218 sl << uint16 (anim_num)
440 SockList_AddShort(&sl, i); 219 << uint16 (0); /* flags - not used right now */
441 ns->faces_sent[i] |= NS_FACESENT_FACE;
442 220
443 qq = get_face_fallback(ns->faceset, i); 221 /* Build up the list of faces. Also, send any information (ie, the
444 SockList_AddInt(&sl, facesets[qq].faces[i].checksum); 222 * the face itself) down to the client.
445 SockList_AddChar(&sl, qq);
446
447 qq = strlen(new_faces[i].name);
448 SockList_AddChar(&sl, ( char )( qq + 1 ));
449 strcpy((char*)sl.buf + sl.len, new_faces[i].name);
450 sl.len += qq;
451 SockList_AddChar(&sl, 0);
452 }
453 /* It would make more sense to catch this pre-emptively in the code above.
454 * however, if this really happens, we probably just want to cut down the
455 * size to less than 1000, since that is what we claim the protocol would
456 * support.
457 */ 223 */
458 if (sl.len >= MAXSOCKBUF) { 224 for (int i = 0; i < animations[anim_num].num_animations; i++)
459 LOG(llevError,"send_image_send: buffer overrun, %d > %d\n", sl.len, MAXSOCKBUF);
460 abort();
461 } 225 {
462 Send_With_Handling(ns, &sl); 226 send_face (animations[anim_num].faces[i], -20);
463 free(sl.buf); 227 sl << uint16 (animations[anim_num].faces[i]);
228 }
229
230 send_packet (sl);
231
232 anims_sent[anim_num] = 1;
464} 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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