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elmex |
1.1 |
/* |
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* static char *rcsid_init_c = |
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root |
1.3 |
* "$Id: image.C,v 1.2 2006-08-29 08:01:38 root Exp $"; |
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elmex |
1.1 |
*/ |
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/* |
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CrossFire, A Multiplayer game for X-windows |
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Copyright (C) 2001 Mark Wedel |
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Copyright (C) 1992 Frank Tore Johansen |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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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 |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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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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/** \file |
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* Image related communication |
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* |
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* \date 2003-12-02 |
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* |
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* 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. |
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*/ |
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#include <global.h> |
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#include <sproto.h> |
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#include <newclient.h> |
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#include <newserver.h> |
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#include <loader.h> |
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#define MAX_FACE_SETS 20 /**< Maximum number of image sets the program will handle */ |
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/** Information about one image */ |
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root |
1.3 |
typedef struct FaceInfo |
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{ |
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uint8 *data; /**< image data */ |
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uint16 datalen; /**< length of the xpm data */ |
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uint32 checksum; /**< Checksum of face data */ |
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elmex |
1.1 |
} FaceInfo; |
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/** Information about one face set */ |
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root |
1.3 |
typedef struct |
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{ |
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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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elmex |
1.1 |
} FaceSets; |
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static FaceSets facesets[MAX_FACE_SETS]; /**< All facesets */ |
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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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1.3 |
int |
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is_valid_faceset (int fsn) |
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elmex |
1.1 |
{ |
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root |
1.3 |
if (fsn >= 0 && fsn < MAX_FACE_SETS && facesets[fsn].prefix) |
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return TRUE; |
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return FALSE; |
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elmex |
1.1 |
} |
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/** |
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* Frees all faceset information |
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*/ |
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root |
1.3 |
void |
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free_socket_images (void) |
95 |
elmex |
1.1 |
{ |
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root |
1.3 |
int num, q; |
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elmex |
1.1 |
|
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root |
1.3 |
for (num = 0; num < MAX_FACE_SETS; num++) |
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{ |
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if (facesets[num].prefix) |
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{ |
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for (q = 0; q < nrofpixmaps; q++) |
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if (facesets[num].faces[q].data) |
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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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1.2 |
} |
112 |
elmex |
1.1 |
} |
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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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*/ |
127 |
root |
1.3 |
static int |
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get_face_fallback (int faceset, int imageno) |
129 |
elmex |
1.1 |
{ |
130 |
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1.3 |
/* 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 |
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* loop. |
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*/ |
136 |
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if (faceset == 0) |
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return 0; |
138 |
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139 |
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if (!facesets[faceset].prefix) |
140 |
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{ |
141 |
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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 */ |
143 |
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} |
144 |
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if (facesets[faceset].faces[imageno].data) |
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return faceset; |
146 |
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return get_face_fallback (facesets[faceset].fallback, imageno); |
147 |
elmex |
1.1 |
} |
148 |
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/** |
150 |
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* Checks fallback are correctly defined. |
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* This is a simple recursive function that makes sure the fallbacks |
152 |
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* are all proper (eg, the fall back to defined sets, and also |
153 |
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* eventually fall back to 0). At the top level, togo is set to MAX_FACE_SETS, |
154 |
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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. |
156 |
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*/ |
157 |
root |
1.3 |
static void |
158 |
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check_faceset_fallback (int faceset, int togo) |
159 |
elmex |
1.1 |
{ |
160 |
root |
1.3 |
int fallback = facesets[faceset].fallback; |
161 |
elmex |
1.1 |
|
162 |
root |
1.3 |
/* proper case - falls back to base set */ |
163 |
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if (fallback == 0) |
164 |
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return; |
165 |
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166 |
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if (!facesets[fallback].prefix) |
167 |
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{ |
168 |
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LOG (llevError, "Face set %d falls to non set faceset %d\n", faceset, fallback); |
169 |
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abort (); |
170 |
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} |
171 |
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togo--; |
172 |
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if (togo == 0) |
173 |
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{ |
174 |
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LOG (llevError, "Infinite loop found in facesets. aborting.\n"); |
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abort (); |
176 |
elmex |
1.1 |
} |
177 |
root |
1.3 |
check_faceset_fallback (fallback, togo); |
178 |
elmex |
1.1 |
} |
179 |
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180 |
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#define MAX_IMAGE_SIZE 10000 |
181 |
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182 |
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/** |
183 |
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* Loads all the image types into memory. |
184 |
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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 |
187 |
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* 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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* |
190 |
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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 |
192 |
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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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*/ |
198 |
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199 |
root |
1.3 |
void |
200 |
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read_client_images (void) |
201 |
elmex |
1.1 |
{ |
202 |
root |
1.3 |
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; |
206 |
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int num, len, compressed, fileno, i, badline; |
207 |
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208 |
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memset (facesets, 0, sizeof (facesets)); |
209 |
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sprintf (filename, "%s/image_info", settings.datadir); |
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if ((infile = open_and_uncompress (filename, 0, &compressed)) == NULL) |
211 |
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{ |
212 |
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LOG (llevError, "Unable to open %s\n", filename); |
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abort (); |
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} |
215 |
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while (fgets (buf, HUGE_BUF - 1, infile) != NULL) |
216 |
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{ |
217 |
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badline = 0; |
218 |
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219 |
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if (buf[0] == '#') |
220 |
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continue; |
221 |
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if (!(cps[0] = strtok (buf, ":"))) |
222 |
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badline = 1; |
223 |
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for (i = 1; i < 7; i++) |
224 |
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{ |
225 |
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if (!(cps[i] = strtok (NULL, ":"))) |
226 |
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badline = 1; |
227 |
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} |
228 |
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if (badline) |
229 |
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{ |
230 |
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LOG (llevError, "Bad line in image_info file, ignoring line:\n %s", buf); |
231 |
root |
1.2 |
} |
232 |
root |
1.3 |
else |
233 |
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{ |
234 |
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len = atoi (cps[0]); |
235 |
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if (len >= MAX_FACE_SETS) |
236 |
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{ |
237 |
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LOG (llevError, "To high a setnum in image_info file: %d > %d\n", len, MAX_FACE_SETS); |
238 |
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abort (); |
239 |
root |
1.2 |
} |
240 |
root |
1.3 |
facesets[len].prefix = strdup_local (cps[1]); |
241 |
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facesets[len].fullname = strdup_local (cps[2]); |
242 |
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facesets[len].fallback = atoi (cps[3]); |
243 |
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facesets[len].size = strdup_local (cps[4]); |
244 |
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facesets[len].extension = strdup_local (cps[5]); |
245 |
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facesets[len].comment = strdup_local (cps[6]); |
246 |
root |
1.2 |
} |
247 |
elmex |
1.1 |
} |
248 |
root |
1.3 |
close_and_delete (infile, compressed); |
249 |
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for (i = 0; i < MAX_FACE_SETS; i++) |
250 |
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{ |
251 |
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if (facesets[i].prefix) |
252 |
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check_faceset_fallback (i, MAX_FACE_SETS); |
253 |
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} |
254 |
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/* Loaded the faceset information - now need to load up the |
255 |
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* actual faces. |
256 |
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*/ |
257 |
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258 |
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for (fileno = 0; fileno < MAX_FACE_SETS; fileno++) |
259 |
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{ |
260 |
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/* if prefix is not set, this is not used */ |
261 |
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if (!facesets[fileno].prefix) |
262 |
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continue; |
263 |
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facesets[fileno].faces = (FaceInfo *) calloc (nrofpixmaps, sizeof (FaceInfo)); |
264 |
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265 |
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sprintf (filename, "%s/crossfire.%d", settings.datadir, fileno); |
266 |
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LOG (llevDebug, "Loading image file %s\n", filename); |
267 |
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268 |
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if ((infile = open_and_uncompress (filename, 0, &compressed)) == NULL) |
269 |
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{ |
270 |
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LOG (llevError, "Unable to open %s\n", filename); |
271 |
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abort (); |
272 |
root |
1.2 |
} |
273 |
root |
1.3 |
while (fgets (buf, HUGE_BUF - 1, infile) != NULL) |
274 |
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{ |
275 |
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if (strncmp (buf, "IMAGE ", 6) != 0) |
276 |
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{ |
277 |
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LOG (llevError, "read_client_images:Bad image line - not IMAGE, instead\n%s", buf); |
278 |
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abort (); |
279 |
root |
1.2 |
} |
280 |
root |
1.3 |
num = atoi (buf + 6); |
281 |
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if (num < 0 || num >= nrofpixmaps) |
282 |
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{ |
283 |
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LOG (llevError, "read_client_images: Image num %d not in 0..%d\n%s", num, nrofpixmaps, buf); |
284 |
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abort (); |
285 |
root |
1.2 |
} |
286 |
root |
1.3 |
/* Skip accross the number data */ |
287 |
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for (cp = buf + 6; *cp != ' '; cp++); |
288 |
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len = atoi (cp); |
289 |
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if (len == 0 || len > MAX_IMAGE_SIZE) |
290 |
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{ |
291 |
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LOG (llevError, "read_client_images: length not valid: %d > %d \n%s", len, MAX_IMAGE_SIZE, buf); |
292 |
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abort (); |
293 |
root |
1.2 |
} |
294 |
root |
1.3 |
/* We don't actualy care about the name if the image that |
295 |
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* is embedded in the image file, so just ignore it. |
296 |
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*/ |
297 |
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facesets[fileno].faces[num].datalen = len; |
298 |
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facesets[fileno].faces[num].data = (uint8 *) malloc (len); |
299 |
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if ((i = fread (facesets[fileno].faces[num].data, len, 1, infile)) != 1) |
300 |
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{ |
301 |
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LOG (llevError, "read_client_images: Did not read desired amount of data, wanted %d, got %d\n%s", len, i, buf); |
302 |
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abort (); |
303 |
root |
1.2 |
} |
304 |
root |
1.3 |
facesets[fileno].faces[num].checksum = 0; |
305 |
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for (i = 0; i < len; i++) |
306 |
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{ |
307 |
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ROTATE_RIGHT (facesets[fileno].faces[num].checksum); |
308 |
|
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facesets[fileno].faces[num].checksum += facesets[fileno].faces[num].data[i]; |
309 |
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facesets[fileno].faces[num].checksum &= 0xffffffff; |
310 |
root |
1.2 |
} |
311 |
|
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} |
312 |
root |
1.3 |
close_and_delete (infile, compressed); |
313 |
|
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} /* For fileno < MAX_FACE_SETS */ |
314 |
elmex |
1.1 |
} |
315 |
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|
316 |
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/** |
317 |
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* Client tells us what type of faces it wants. Also sets |
318 |
|
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* the caching attribute. |
319 |
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* |
320 |
|
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*/ |
321 |
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|
322 |
root |
1.3 |
void |
323 |
|
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SetFaceMode (char *buf, int len, NewSocket * ns) |
324 |
elmex |
1.1 |
{ |
325 |
root |
1.3 |
char tmp[256]; |
326 |
elmex |
1.1 |
|
327 |
root |
1.3 |
int mask = (atoi (buf) & CF_FACE_CACHE), mode = (atoi (buf) & ~CF_FACE_CACHE); |
328 |
elmex |
1.1 |
|
329 |
root |
1.3 |
if (mode == CF_FACE_NONE) |
330 |
|
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{ |
331 |
|
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ns->facecache = 1; |
332 |
|
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} |
333 |
|
|
else if (mode != CF_FACE_PNG) |
334 |
|
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{ |
335 |
|
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sprintf (tmp, "drawinfo %d %s", NDI_RED, "Warning - send unsupported face mode. Will use Png"); |
336 |
|
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Write_String_To_Socket (ns, tmp, strlen (tmp)); |
337 |
elmex |
1.1 |
#ifdef ESRV_DEBUG |
338 |
root |
1.3 |
LOG (llevDebug, "SetFaceMode: Invalid mode from client: %d\n", mode); |
339 |
elmex |
1.1 |
#endif |
340 |
|
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} |
341 |
root |
1.3 |
if (mask) |
342 |
|
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{ |
343 |
|
|
ns->facecache = 1; |
344 |
elmex |
1.1 |
} |
345 |
|
|
} |
346 |
|
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|
347 |
|
|
/** |
348 |
|
|
* Client has requested pixmap that it somehow missed getting. |
349 |
|
|
* This will be called often if the client is |
350 |
|
|
* caching images. |
351 |
|
|
*/ |
352 |
|
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|
353 |
root |
1.3 |
void |
354 |
|
|
SendFaceCmd (char *buff, int len, NewSocket * ns) |
355 |
elmex |
1.1 |
{ |
356 |
root |
1.3 |
long tmpnum = atoi (buff); |
357 |
|
|
short facenum = tmpnum & 0xffff; |
358 |
elmex |
1.1 |
|
359 |
root |
1.3 |
if (facenum != 0) |
360 |
|
|
esrv_send_face (ns, facenum, 1); |
361 |
elmex |
1.1 |
} |
362 |
|
|
|
363 |
|
|
/** |
364 |
|
|
* Sends a face to a client if they are in pixmap mode |
365 |
|
|
* nothing gets sent in bitmap mode. |
366 |
|
|
* If nocache is true (nonzero), ignore the cache setting from the client - |
367 |
|
|
* this is needed for the askface, in which we really do want to send the |
368 |
|
|
* face (and askface is the only place that should be setting it). Otherwise, |
369 |
|
|
* we look at the facecache, and if set, send the image name. |
370 |
|
|
*/ |
371 |
|
|
|
372 |
root |
1.3 |
void |
373 |
|
|
esrv_send_face (NewSocket * ns, short face_num, int nocache) |
374 |
elmex |
1.1 |
{ |
375 |
root |
1.3 |
SockList sl; |
376 |
|
|
char fallback; |
377 |
elmex |
1.1 |
|
378 |
root |
1.3 |
if (face_num <= 0 || face_num >= nrofpixmaps) |
379 |
|
|
{ |
380 |
|
|
LOG (llevError, "esrv_send_face (%d) out of bounds??\n", face_num); |
381 |
|
|
return; |
382 |
|
|
} |
383 |
|
|
|
384 |
|
|
sl.buf = (unsigned char *) malloc (MAXSOCKBUF); |
385 |
|
|
fallback = get_face_fallback (ns->faceset, face_num); |
386 |
|
|
|
387 |
|
|
if (facesets[fallback].faces[face_num].data == NULL) |
388 |
|
|
{ |
389 |
|
|
LOG (llevError, "esrv_send_face: faces[%d].data == NULL\n", face_num); |
390 |
|
|
return; |
391 |
|
|
} |
392 |
|
|
|
393 |
|
|
if (ns->facecache && !nocache) |
394 |
|
|
{ |
395 |
|
|
if (ns->image2) |
396 |
|
|
strcpy ((char *) sl.buf, "face2 "); |
397 |
|
|
else if (ns->sc_version >= 1026) |
398 |
|
|
strcpy ((char *) sl.buf, "face1 "); |
399 |
|
|
else |
400 |
|
|
strcpy ((char *) sl.buf, "face "); |
401 |
|
|
|
402 |
|
|
sl.len = strlen ((const char *) sl.buf); |
403 |
|
|
SockList_AddShort (&sl, face_num); |
404 |
|
|
if (ns->image2) |
405 |
|
|
SockList_AddChar (&sl, fallback); |
406 |
|
|
if (ns->sc_version >= 1026) |
407 |
|
|
SockList_AddInt (&sl, facesets[fallback].faces[face_num].checksum); |
408 |
|
|
strcpy ((char *) sl.buf + sl.len, new_faces[face_num].name); |
409 |
|
|
sl.len += strlen (new_faces[face_num].name); |
410 |
|
|
Send_With_Handling (ns, &sl); |
411 |
|
|
} |
412 |
|
|
else |
413 |
|
|
{ |
414 |
|
|
if (ns->image2) |
415 |
|
|
strcpy ((char *) sl.buf, "image2 "); |
416 |
|
|
else |
417 |
|
|
strcpy ((char *) sl.buf, "image "); |
418 |
|
|
sl.len = strlen ((char *) sl.buf); |
419 |
|
|
SockList_AddInt (&sl, face_num); |
420 |
|
|
if (ns->image2) |
421 |
|
|
SockList_AddChar (&sl, fallback); |
422 |
|
|
SockList_AddInt (&sl, facesets[fallback].faces[face_num].datalen); |
423 |
|
|
memcpy (sl.buf + sl.len, facesets[fallback].faces[face_num].data, facesets[fallback].faces[face_num].datalen); |
424 |
|
|
sl.len += facesets[fallback].faces[face_num].datalen; |
425 |
|
|
Send_With_Handling (ns, &sl); |
426 |
elmex |
1.1 |
} |
427 |
root |
1.3 |
ns->faces_sent[face_num] |= NS_FACESENT_FACE; |
428 |
|
|
free (sl.buf); |
429 |
elmex |
1.1 |
} |
430 |
|
|
|
431 |
|
|
/** |
432 |
|
|
* Sends the number of images, checksum of the face file, |
433 |
|
|
* and the image_info file information. See the doc/Developers/protocol |
434 |
|
|
* if you want further detail. |
435 |
|
|
*/ |
436 |
|
|
|
437 |
root |
1.3 |
void |
438 |
|
|
send_image_info (NewSocket * ns, char *params) |
439 |
elmex |
1.1 |
{ |
440 |
root |
1.3 |
SockList sl; |
441 |
|
|
int i; |
442 |
elmex |
1.1 |
|
443 |
root |
1.3 |
sl.buf = (unsigned char *) malloc (MAXSOCKBUF); |
444 |
elmex |
1.1 |
|
445 |
root |
1.3 |
sprintf ((char *) sl.buf, "replyinfo image_info\n%d\n%d\n", nrofpixmaps - 1, bmaps_checksum); |
446 |
|
|
for (i = 0; i < MAX_FACE_SETS; i++) |
447 |
|
|
{ |
448 |
|
|
if (facesets[i].prefix) |
449 |
|
|
{ |
450 |
|
|
sprintf ((char *) sl.buf + strlen ((const char *) sl.buf), "%d:%s:%s:%d:%s:%s:%s", |
451 |
|
|
i, facesets[i].prefix, facesets[i].fullname, facesets[i].fallback, |
452 |
|
|
facesets[i].size, facesets[i].extension, facesets[i].comment); |
453 |
root |
1.2 |
} |
454 |
elmex |
1.1 |
} |
455 |
root |
1.3 |
sl.len = strlen ((const char *) sl.buf); |
456 |
|
|
Send_With_Handling (ns, &sl); |
457 |
|
|
free (sl.buf); |
458 |
elmex |
1.1 |
} |
459 |
|
|
|
460 |
|
|
/** |
461 |
|
|
* Sends requested face information. |
462 |
|
|
* \param ns socket to send to |
463 |
|
|
* \param params contains first and last index of face |
464 |
|
|
* |
465 |
|
|
* For each image in [start..stop] sends |
466 |
|
|
* - checksum |
467 |
|
|
* - name |
468 |
|
|
*/ |
469 |
root |
1.3 |
void |
470 |
|
|
send_image_sums (NewSocket * ns, char *params) |
471 |
elmex |
1.1 |
{ |
472 |
root |
1.3 |
int start, stop; |
473 |
|
|
short i; |
474 |
|
|
char qq; |
475 |
|
|
char *cp, buf[MAX_BUF]; |
476 |
|
|
SockList sl; |
477 |
|
|
|
478 |
|
|
sl.buf = (unsigned char *) malloc (MAXSOCKBUF); |
479 |
|
|
|
480 |
|
|
start = atoi (params); |
481 |
|
|
for (cp = params; *cp != '\0'; cp++) |
482 |
|
|
if (*cp == ' ') |
483 |
|
|
break; |
484 |
|
|
|
485 |
|
|
stop = atoi (cp); |
486 |
|
|
if (stop < start || *cp == '\0' || (stop - start) > 1000 || stop >= nrofpixmaps) |
487 |
|
|
{ |
488 |
|
|
sprintf (buf, "replyinfo image_sums %d %d", start, stop); |
489 |
|
|
cs_write_string (ns, buf, strlen (buf)); |
490 |
|
|
return; |
491 |
|
|
} |
492 |
|
|
sprintf ((char *) sl.buf, "replyinfo image_sums %d %d ", start, stop); |
493 |
|
|
|
494 |
|
|
sl.len = strlen ((const char *) sl.buf); |
495 |
|
|
|
496 |
|
|
for (i = start; i <= stop; i++) |
497 |
|
|
{ |
498 |
|
|
SockList_AddShort (&sl, i); |
499 |
|
|
ns->faces_sent[i] |= NS_FACESENT_FACE; |
500 |
|
|
|
501 |
|
|
qq = get_face_fallback (ns->faceset, i); |
502 |
|
|
SockList_AddInt (&sl, facesets[qq].faces[i].checksum); |
503 |
|
|
SockList_AddChar (&sl, qq); |
504 |
|
|
|
505 |
|
|
qq = strlen (new_faces[i].name); |
506 |
|
|
SockList_AddChar (&sl, (char) (qq + 1)); |
507 |
|
|
strcpy ((char *) sl.buf + sl.len, new_faces[i].name); |
508 |
|
|
sl.len += qq; |
509 |
|
|
SockList_AddChar (&sl, 0); |
510 |
|
|
} |
511 |
|
|
/* It would make more sense to catch this pre-emptively in the code above. |
512 |
|
|
* however, if this really happens, we probably just want to cut down the |
513 |
|
|
* size to less than 1000, since that is what we claim the protocol would |
514 |
|
|
* support. |
515 |
|
|
*/ |
516 |
|
|
if (sl.len >= MAXSOCKBUF) |
517 |
|
|
{ |
518 |
|
|
LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.len, MAXSOCKBUF); |
519 |
|
|
abort (); |
520 |
elmex |
1.1 |
} |
521 |
root |
1.3 |
Send_With_Handling (ns, &sl); |
522 |
|
|
free (sl.buf); |
523 |
elmex |
1.1 |
} |