| 1 |
/* |
| 2 |
* static char *rcsid_init_c = |
| 3 |
* "$Id$"; |
| 4 |
*/ |
| 5 |
|
| 6 |
/* |
| 7 |
CrossFire, A Multiplayer game for X-windows |
| 8 |
|
| 9 |
Copyright (C) 2001 Mark Wedel |
| 10 |
Copyright (C) 1992 Frank Tore Johansen |
| 11 |
|
| 12 |
This program is free software; you can redistribute it and/or modify |
| 13 |
it under the terms of the GNU General Public License as published by |
| 14 |
the Free Software Foundation; either version 2 of the License, or |
| 15 |
(at your option) any later version. |
| 16 |
|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 |
GNU General Public License for more details. |
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|
| 22 |
You should have received a copy of the GNU General Public License |
| 23 |
along with this program; if not, write to the Free Software |
| 24 |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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|
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The author can be reached via e-mail to crossfire-devel@real-time.com |
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*/ |
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|
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/** \file |
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* Image related communication |
| 31 |
* |
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* \date 2003-12-02 |
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* |
| 34 |
* This file deals with the image related communication to the |
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* client. I've located all the functions in this file - this |
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* localizes it more, and means that we don't need to declare |
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* things like all the structures as globals. |
| 38 |
*/ |
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|
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#include <global.h> |
| 41 |
#include <sproto.h> |
| 42 |
|
| 43 |
#include <newclient.h> |
| 44 |
#include <newserver.h> |
| 45 |
#include <loader.h> |
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|
| 47 |
#define MAX_FACE_SETS 20 /**< Maximum number of image sets the program will handle */ |
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|
| 49 |
/** Information about one image */ |
| 50 |
typedef 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 |
|
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/** Information about one face set */ |
| 57 |
typedef struct { |
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char *prefix; /**< */ |
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char *fullname; |
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uint8 fallback; /**< faceset to use when an image is not found in this faceset */ |
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char *size; |
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char *extension; |
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char *comment; |
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FaceInfo *faces; /**< images in this faceset */ |
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} FaceSets; |
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|
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static FaceSets facesets[MAX_FACE_SETS]; /**< All facesets */ |
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|
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/** |
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* Checks specified faceset is valid |
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* \param fsn faceset number |
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*/ |
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int is_valid_faceset(int fsn) |
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{ |
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if (fsn >=0 && fsn < MAX_FACE_SETS && facesets[fsn].prefix) return TRUE; |
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return FALSE; |
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} |
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|
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/** |
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* Frees all faceset information |
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*/ |
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void free_socket_images(void) |
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{ |
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int num,q; |
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|
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for(num=0;num<MAX_FACE_SETS; num++) { |
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if (facesets[num].prefix) { |
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for (q=0; q<nrofpixmaps; q++) |
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if (facesets[num].faces[q].data) free(facesets[num].faces[q].data); |
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free(facesets[num].prefix); |
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free(facesets[num].fullname); |
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free(facesets[num].size); |
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free(facesets[num].extension); |
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free(facesets[num].comment); |
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free(facesets[num].faces); |
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} |
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} |
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} |
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|
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/** |
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* This returns the set we will actually use when sending |
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* a face. This is used because the image files may be sparse. |
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* This function is recursive. imageno is the face number we are |
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* trying to send |
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* |
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* If face is not found in specified faceset, tries with 'fallback' faceset. |
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* |
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* \param faceset faceset to check |
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* \param imageno image number |
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* |
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*/ |
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static int get_face_fallback(int faceset, int imageno) |
| 113 |
{ |
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/* faceset 0 is supposed to have every image, so just return. Doing |
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* so also prevents infinite loops in the case if it not having |
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* the face, but in that case, we are likely to crash when we try |
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* to access the data, but that is probably preferable to an infinite |
| 118 |
* loop. |
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*/ |
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if (faceset==0) return 0; |
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|
| 122 |
if (!facesets[faceset].prefix) { |
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LOG(llevError,"get_face_fallback called with unused set (%d)?\n", faceset); |
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return 0; /* use default set */ |
| 125 |
} |
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if (facesets[faceset].faces[imageno].data) return faceset; |
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return get_face_fallback(facesets[faceset].fallback, imageno); |
| 128 |
} |
| 129 |
|
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/** |
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* Checks fallback are correctly defined. |
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* This is a simple recursive function that makes sure the fallbacks |
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* are all proper (eg, the fall back to defined sets, and also |
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* eventually fall back to 0). At the top level, togo is set to MAX_FACE_SETS, |
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* if togo gets to zero, it means we have a loop. |
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* This is only run when we first load the facesets. |
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*/ |
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static void check_faceset_fallback(int faceset, int togo) |
| 139 |
{ |
| 140 |
int fallback = facesets[faceset].fallback; |
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|
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/* proper case - falls back to base set */ |
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if (fallback == 0) return; |
| 144 |
|
| 145 |
if (!facesets[fallback].prefix) { |
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LOG(llevError,"Face set %d falls to non set faceset %d\n", faceset, fallback); |
| 147 |
abort(); |
| 148 |
} |
| 149 |
togo--; |
| 150 |
if (togo == 0) { |
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LOG(llevError,"Infinite loop found in facesets. aborting.\n"); |
| 152 |
abort(); |
| 153 |
} |
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check_faceset_fallback(fallback, togo); |
| 155 |
} |
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|
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#define MAX_IMAGE_SIZE 10000 |
| 158 |
|
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/** |
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* Loads all the image types into memory. |
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* |
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* This way, we can easily send them to the client. We should really do something |
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* 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 |
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* messy (exit would probably be better.) |
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* |
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* Couple of notes: We assume that the faces are in a continous block. |
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* This works fine for now, but this could perhaps change in the future |
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* |
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* Function largely rewritten May 2000 to be more general purpose. |
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* The server itself does not care what the image data is - to the server, |
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* it is just data it needs to allocate. As such, the code is written |
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* to do such. |
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*/ |
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|
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void read_client_images(void) |
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{ |
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char filename[400]; |
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char buf[HUGE_BUF]; |
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char *cp, *cps[7]; |
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FILE *infile; |
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int num,len,compressed, fileno,i, badline; |
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|
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memset(facesets, 0, sizeof(facesets)); |
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sprintf(filename,"%s/image_info",settings.datadir); |
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if ((infile=open_and_uncompress(filename, 0, &compressed))==NULL) { |
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LOG(llevError,"Unable to open %s\n", filename); |
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abort(); |
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} |
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while (fgets(buf, HUGE_BUF-1, infile)!=NULL) { |
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badline=0; |
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|
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if (buf[0] == '#') continue; |
| 194 |
if (!(cps[0] = strtok(buf, ":"))) badline=1; |
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for (i=1; i<7; i++) { |
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if (!(cps[i] = strtok(NULL, ":"))) badline=1; |
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} |
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if (badline) { |
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LOG(llevError,"Bad line in image_info file, ignoring line:\n %s", buf); |
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} else { |
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len = atoi(cps[0]); |
| 202 |
if (len >=MAX_FACE_SETS) { |
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LOG(llevError,"To high a setnum in image_info file: %d > %d\n", |
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len, MAX_FACE_SETS); |
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abort(); |
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} |
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facesets[len].prefix = strdup_local(cps[1]); |
| 208 |
facesets[len].fullname = strdup_local(cps[2]); |
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facesets[len].fallback = atoi(cps[3]); |
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facesets[len].size = strdup_local(cps[4]); |
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facesets[len].extension = strdup_local(cps[5]); |
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facesets[len].comment = strdup_local(cps[6]); |
| 213 |
} |
| 214 |
} |
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close_and_delete(infile,compressed); |
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for (i=0; i<MAX_FACE_SETS; i++) { |
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if (facesets[i].prefix) check_faceset_fallback(i, MAX_FACE_SETS); |
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} |
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/* Loaded the faceset information - now need to load up the |
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* actual faces. |
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*/ |
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|
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for (fileno=0; fileno<MAX_FACE_SETS; fileno++) { |
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/* if prefix is not set, this is not used */ |
| 225 |
if (!facesets[fileno].prefix) continue; |
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facesets[fileno].faces = calloc(nrofpixmaps, sizeof(FaceInfo)); |
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|
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sprintf(filename,"%s/crossfire.%d",settings.datadir, fileno); |
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LOG(llevDebug,"Loading image file %s\n", filename); |
| 230 |
|
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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 = 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 |
|
| 281 |
void 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 |
| 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 |
|
| 307 |
void 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 |
} |
| 315 |
|
| 316 |
/** |
| 317 |
* Sends a face to a client if they are in pixmap mode |
| 318 |
* nothing gets sent in bitmap mode. |
| 319 |
* 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 |
| 321 |
* 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. |
| 323 |
*/ |
| 324 |
|
| 325 |
void esrv_send_face(NewSocket *ns,short face_num, int nocache) |
| 326 |
{ |
| 327 |
SockList sl; |
| 328 |
char fallback; |
| 329 |
|
| 330 |
if (face_num <= 0 || face_num >= nrofpixmaps) { |
| 331 |
LOG(llevError,"esrv_send_face (%d) out of bounds??\n",face_num); |
| 332 |
return; |
| 333 |
} |
| 334 |
|
| 335 |
sl.buf = malloc(MAXSOCKBUF); |
| 336 |
fallback = get_face_fallback(ns->faceset, face_num); |
| 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; |
| 341 |
} |
| 342 |
|
| 343 |
if (ns->facecache && !nocache) { |
| 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 |
| 349 |
strcpy((char*)sl.buf, "face "); |
| 350 |
|
| 351 |
sl.len=strlen(sl.buf); |
| 352 |
SockList_AddShort(&sl, face_num); |
| 353 |
if (ns->image2) |
| 354 |
SockList_AddChar(&sl, fallback); |
| 355 |
if (ns->sc_version >= 1026) |
| 356 |
SockList_AddInt(&sl, facesets[fallback].faces[face_num].checksum); |
| 357 |
strcpy((char*)sl.buf + sl.len, new_faces[face_num].name); |
| 358 |
sl.len += strlen(new_faces[face_num].name); |
| 359 |
Send_With_Handling(ns, &sl); |
| 360 |
} |
| 361 |
else { |
| 362 |
if (ns->image2) |
| 363 |
strcpy((char*)sl.buf, "image2 "); |
| 364 |
else |
| 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 |
} |
| 376 |
ns->faces_sent[face_num] |= NS_FACESENT_FACE; |
| 377 |
free(sl.buf); |
| 378 |
} |
| 379 |
|
| 380 |
/** |
| 381 |
* Sends the number of images, checksum of the face file, |
| 382 |
* and the image_info file information. See the doc/Developers/protocol |
| 383 |
* if you want further detail. |
| 384 |
*/ |
| 385 |
|
| 386 |
void send_image_info(NewSocket *ns, char *params) |
| 387 |
{ |
| 388 |
SockList sl; |
| 389 |
int i; |
| 390 |
|
| 391 |
sl.buf = malloc(MAXSOCKBUF); |
| 392 |
|
| 393 |
sprintf(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(sl.buf + strlen(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(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 |
* |
| 411 |
* For each image in [start..stop] sends |
| 412 |
* - checksum |
| 413 |
* - name |
| 414 |
*/ |
| 415 |
void send_image_sums(NewSocket *ns, char *params) |
| 416 |
{ |
| 417 |
int start, stop; |
| 418 |
short i; |
| 419 |
char qq; |
| 420 |
char *cp, buf[MAX_BUF]; |
| 421 |
SockList sl; |
| 422 |
|
| 423 |
sl.buf = 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; |
| 434 |
} |
| 435 |
sprintf(sl.buf,"replyinfo image_sums %d %d ", start, stop); |
| 436 |
|
| 437 |
sl.len = strlen(sl.buf); |
| 438 |
|
| 439 |
for (i=start; i<=stop; i++) { |
| 440 |
SockList_AddShort(&sl, i); |
| 441 |
ns->faces_sent[i] |= NS_FACESENT_FACE; |
| 442 |
|
| 443 |
qq = get_face_fallback(ns->faceset, i); |
| 444 |
SockList_AddInt(&sl, facesets[qq].faces[i].checksum); |
| 445 |
SockList_AddChar(&sl, qq); |
| 446 |
|
| 447 |
qq = strlen(new_faces[i].name); |
| 448 |
SockList_AddChar(&sl, ( char )( qq + 1 )); |
| 449 |
strcpy(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 |
*/ |
| 458 |
if (sl.len >= MAXSOCKBUF) { |
| 459 |
LOG(llevError,"send_image_send: buffer overrun, %d > %d\n", sl.len, MAXSOCKBUF); |
| 460 |
abort(); |
| 461 |
} |
| 462 |
Send_With_Handling(ns, &sl); |
| 463 |
free(sl.buf); |
| 464 |
} |
