1 |
elmex |
1.1 |
/* |
2 |
root |
1.17 |
* CrossFire, A Multiplayer game |
3 |
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* |
4 |
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* Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team |
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* Copyright (C) 2001 Mark Wedel |
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* Copyright (C) 1992 Frank Tore Johansen |
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* |
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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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* |
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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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* |
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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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* |
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* The author can be reached via e-mail to <crossfire@schmorp.de> |
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*/ |
24 |
elmex |
1.1 |
|
25 |
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/** \file |
26 |
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* Image related communication |
27 |
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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 |
32 |
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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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*/ |
35 |
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36 |
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#include <global.h> |
37 |
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#include <sproto.h> |
38 |
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39 |
root |
1.20 |
#include "crc.h" |
40 |
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|
41 |
elmex |
1.1 |
#define MAX_FACE_SETS 20 /**< Maximum number of image sets the program will handle */ |
42 |
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43 |
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/** Information about one image */ |
44 |
root |
1.3 |
typedef struct FaceInfo |
45 |
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{ |
46 |
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uint8 *data; /**< image data */ |
47 |
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uint16 datalen; /**< length of the xpm data */ |
48 |
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uint32 checksum; /**< Checksum of face data */ |
49 |
elmex |
1.1 |
} FaceInfo; |
50 |
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51 |
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/** Information about one face set */ |
52 |
root |
1.3 |
typedef struct |
53 |
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{ |
54 |
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char *prefix; /**< */ |
55 |
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char *fullname; |
56 |
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57 |
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uint8 fallback; /**< faceset to use when an image is not found in this faceset */ |
58 |
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char *size; |
59 |
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char *extension; |
60 |
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char *comment; |
61 |
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62 |
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FaceInfo *faces; /**< images in this faceset */ |
63 |
elmex |
1.1 |
} FaceSets; |
64 |
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65 |
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static FaceSets facesets[MAX_FACE_SETS]; /**< All facesets */ |
66 |
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67 |
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/** |
68 |
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* Checks specified faceset is valid |
69 |
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* \param fsn faceset number |
70 |
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*/ |
71 |
root |
1.3 |
int |
72 |
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is_valid_faceset (int fsn) |
73 |
elmex |
1.1 |
{ |
74 |
root |
1.3 |
if (fsn >= 0 && fsn < MAX_FACE_SETS && facesets[fsn].prefix) |
75 |
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return TRUE; |
76 |
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return FALSE; |
77 |
elmex |
1.1 |
} |
78 |
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79 |
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/** |
80 |
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* Frees all faceset information |
81 |
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*/ |
82 |
root |
1.3 |
void |
83 |
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free_socket_images (void) |
84 |
elmex |
1.1 |
{ |
85 |
root |
1.3 |
int num, q; |
86 |
elmex |
1.1 |
|
87 |
root |
1.3 |
for (num = 0; num < MAX_FACE_SETS; num++) |
88 |
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{ |
89 |
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if (facesets[num].prefix) |
90 |
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{ |
91 |
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for (q = 0; q < nrofpixmaps; q++) |
92 |
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if (facesets[num].faces[q].data) |
93 |
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free (facesets[num].faces[q].data); |
94 |
root |
1.15 |
|
95 |
root |
1.3 |
free (facesets[num].prefix); |
96 |
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free (facesets[num].fullname); |
97 |
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free (facesets[num].size); |
98 |
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free (facesets[num].extension); |
99 |
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free (facesets[num].comment); |
100 |
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free (facesets[num].faces); |
101 |
root |
1.2 |
} |
102 |
elmex |
1.1 |
} |
103 |
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} |
104 |
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105 |
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/** |
106 |
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* This returns the set we will actually use when sending |
107 |
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* a face. This is used because the image files may be sparse. |
108 |
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* This function is recursive. imageno is the face number we are |
109 |
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* trying to send |
110 |
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* |
111 |
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* If face is not found in specified faceset, tries with 'fallback' faceset. |
112 |
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* |
113 |
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* \param faceset faceset to check |
114 |
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* \param imageno image number |
115 |
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* |
116 |
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*/ |
117 |
root |
1.3 |
static int |
118 |
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get_face_fallback (int faceset, int imageno) |
119 |
elmex |
1.1 |
{ |
120 |
root |
1.3 |
/* faceset 0 is supposed to have every image, so just return. Doing |
121 |
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* so also prevents infinite loops in the case if it not having |
122 |
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* the face, but in that case, we are likely to crash when we try |
123 |
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* to access the data, but that is probably preferable to an infinite |
124 |
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* loop. |
125 |
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*/ |
126 |
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if (faceset == 0) |
127 |
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return 0; |
128 |
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129 |
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if (!facesets[faceset].prefix) |
130 |
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{ |
131 |
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LOG (llevError, "get_face_fallback called with unused set (%d)?\n", faceset); |
132 |
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return 0; /* use default set */ |
133 |
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} |
134 |
root |
1.15 |
|
135 |
root |
1.3 |
if (facesets[faceset].faces[imageno].data) |
136 |
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return faceset; |
137 |
root |
1.15 |
|
138 |
root |
1.3 |
return get_face_fallback (facesets[faceset].fallback, imageno); |
139 |
elmex |
1.1 |
} |
140 |
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141 |
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/** |
142 |
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* Checks fallback are correctly defined. |
143 |
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* This is a simple recursive function that makes sure the fallbacks |
144 |
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* are all proper (eg, the fall back to defined sets, and also |
145 |
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* eventually fall back to 0). At the top level, togo is set to MAX_FACE_SETS, |
146 |
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* if togo gets to zero, it means we have a loop. |
147 |
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* This is only run when we first load the facesets. |
148 |
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*/ |
149 |
root |
1.3 |
static void |
150 |
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check_faceset_fallback (int faceset, int togo) |
151 |
elmex |
1.1 |
{ |
152 |
root |
1.3 |
int fallback = facesets[faceset].fallback; |
153 |
elmex |
1.1 |
|
154 |
root |
1.3 |
/* proper case - falls back to base set */ |
155 |
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if (fallback == 0) |
156 |
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return; |
157 |
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158 |
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if (!facesets[fallback].prefix) |
159 |
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{ |
160 |
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LOG (llevError, "Face set %d falls to non set faceset %d\n", faceset, fallback); |
161 |
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abort (); |
162 |
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} |
163 |
root |
1.15 |
|
164 |
root |
1.3 |
togo--; |
165 |
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if (togo == 0) |
166 |
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{ |
167 |
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LOG (llevError, "Infinite loop found in facesets. aborting.\n"); |
168 |
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abort (); |
169 |
elmex |
1.1 |
} |
170 |
root |
1.15 |
|
171 |
root |
1.3 |
check_faceset_fallback (fallback, togo); |
172 |
elmex |
1.1 |
} |
173 |
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174 |
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#define MAX_IMAGE_SIZE 10000 |
175 |
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176 |
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/** |
177 |
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* Loads all the image types into memory. |
178 |
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* |
179 |
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* This way, we can easily send them to the client. We should really do something |
180 |
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* better than abort on any errors - on the other hand, these are all fatal |
181 |
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* to the server (can't work around them), but the abort just seems a bit |
182 |
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* messy (exit would probably be better.) |
183 |
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* |
184 |
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* Couple of notes: We assume that the faces are in a continous block. |
185 |
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* This works fine for now, but this could perhaps change in the future |
186 |
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* |
187 |
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* Function largely rewritten May 2000 to be more general purpose. |
188 |
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* The server itself does not care what the image data is - to the server, |
189 |
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* it is just data it needs to allocate. As such, the code is written |
190 |
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* to do such. |
191 |
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*/ |
192 |
root |
1.3 |
void |
193 |
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read_client_images (void) |
194 |
elmex |
1.1 |
{ |
195 |
root |
1.3 |
char filename[400]; |
196 |
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char buf[HUGE_BUF]; |
197 |
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char *cp, *cps[7]; |
198 |
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FILE *infile; |
199 |
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int num, len, compressed, fileno, i, badline; |
200 |
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201 |
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memset (facesets, 0, sizeof (facesets)); |
202 |
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sprintf (filename, "%s/image_info", settings.datadir); |
203 |
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if ((infile = open_and_uncompress (filename, 0, &compressed)) == NULL) |
204 |
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{ |
205 |
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LOG (llevError, "Unable to open %s\n", filename); |
206 |
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abort (); |
207 |
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} |
208 |
root |
1.15 |
|
209 |
root |
1.3 |
while (fgets (buf, HUGE_BUF - 1, infile) != NULL) |
210 |
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{ |
211 |
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badline = 0; |
212 |
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213 |
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if (buf[0] == '#') |
214 |
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continue; |
215 |
root |
1.15 |
|
216 |
root |
1.3 |
if (!(cps[0] = strtok (buf, ":"))) |
217 |
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badline = 1; |
218 |
root |
1.15 |
|
219 |
root |
1.3 |
for (i = 1; i < 7; i++) |
220 |
root |
1.15 |
if (!(cps[i] = strtok (NULL, ":"))) |
221 |
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badline = 1; |
222 |
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223 |
root |
1.3 |
if (badline) |
224 |
root |
1.15 |
LOG (llevError, "Bad line in image_info file, ignoring line:\n %s", buf); |
225 |
root |
1.3 |
else |
226 |
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{ |
227 |
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len = atoi (cps[0]); |
228 |
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if (len >= MAX_FACE_SETS) |
229 |
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{ |
230 |
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LOG (llevError, "To high a setnum in image_info file: %d > %d\n", len, MAX_FACE_SETS); |
231 |
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abort (); |
232 |
root |
1.2 |
} |
233 |
root |
1.12 |
facesets[len].prefix = strdup (cps[1]); |
234 |
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facesets[len].fullname = strdup (cps[2]); |
235 |
root |
1.3 |
facesets[len].fallback = atoi (cps[3]); |
236 |
root |
1.12 |
facesets[len].size = strdup (cps[4]); |
237 |
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facesets[len].extension = strdup (cps[5]); |
238 |
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facesets[len].comment = strdup (cps[6]); |
239 |
root |
1.2 |
} |
240 |
elmex |
1.1 |
} |
241 |
root |
1.15 |
|
242 |
root |
1.3 |
close_and_delete (infile, compressed); |
243 |
root |
1.15 |
|
244 |
root |
1.3 |
for (i = 0; i < MAX_FACE_SETS; i++) |
245 |
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{ |
246 |
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if (facesets[i].prefix) |
247 |
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check_faceset_fallback (i, MAX_FACE_SETS); |
248 |
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} |
249 |
root |
1.15 |
|
250 |
root |
1.3 |
/* Loaded the faceset information - now need to load up the |
251 |
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* actual faces. |
252 |
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*/ |
253 |
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254 |
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for (fileno = 0; fileno < MAX_FACE_SETS; fileno++) |
255 |
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{ |
256 |
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/* if prefix is not set, this is not used */ |
257 |
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if (!facesets[fileno].prefix) |
258 |
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continue; |
259 |
root |
1.15 |
|
260 |
root |
1.3 |
facesets[fileno].faces = (FaceInfo *) calloc (nrofpixmaps, sizeof (FaceInfo)); |
261 |
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262 |
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sprintf (filename, "%s/crossfire.%d", settings.datadir, fileno); |
263 |
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LOG (llevDebug, "Loading image file %s\n", filename); |
264 |
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265 |
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if ((infile = open_and_uncompress (filename, 0, &compressed)) == NULL) |
266 |
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{ |
267 |
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LOG (llevError, "Unable to open %s\n", filename); |
268 |
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abort (); |
269 |
root |
1.2 |
} |
270 |
root |
1.15 |
|
271 |
root |
1.3 |
while (fgets (buf, HUGE_BUF - 1, infile) != NULL) |
272 |
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{ |
273 |
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if (strncmp (buf, "IMAGE ", 6) != 0) |
274 |
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{ |
275 |
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LOG (llevError, "read_client_images:Bad image line - not IMAGE, instead\n%s", buf); |
276 |
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abort (); |
277 |
root |
1.2 |
} |
278 |
root |
1.15 |
|
279 |
root |
1.3 |
num = atoi (buf + 6); |
280 |
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if (num < 0 || num >= nrofpixmaps) |
281 |
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{ |
282 |
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LOG (llevError, "read_client_images: Image num %d not in 0..%d\n%s", num, nrofpixmaps, buf); |
283 |
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abort (); |
284 |
root |
1.2 |
} |
285 |
root |
1.15 |
|
286 |
root |
1.3 |
/* Skip accross the number data */ |
287 |
root |
1.21 |
for (cp = buf + 6; *cp != ' '; cp++) |
288 |
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; |
289 |
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|
290 |
root |
1.3 |
len = atoi (cp); |
291 |
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if (len == 0 || len > MAX_IMAGE_SIZE) |
292 |
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{ |
293 |
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LOG (llevError, "read_client_images: length not valid: %d > %d \n%s", len, MAX_IMAGE_SIZE, buf); |
294 |
|
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abort (); |
295 |
root |
1.2 |
} |
296 |
root |
1.15 |
|
297 |
root |
1.5 |
/* We don't actualy care about the name of the image that |
298 |
root |
1.3 |
* is embedded in the image file, so just ignore it. |
299 |
|
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*/ |
300 |
|
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facesets[fileno].faces[num].datalen = len; |
301 |
|
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facesets[fileno].faces[num].data = (uint8 *) malloc (len); |
302 |
|
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if ((i = fread (facesets[fileno].faces[num].data, len, 1, infile)) != 1) |
303 |
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{ |
304 |
|
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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); |
305 |
|
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abort (); |
306 |
root |
1.2 |
} |
307 |
root |
1.15 |
|
308 |
root |
1.20 |
crc32 chksum; |
309 |
|
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|
310 |
root |
1.3 |
for (i = 0; i < len; i++) |
311 |
root |
1.20 |
chksum (facesets[fileno].faces[num].data[i]); |
312 |
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|
313 |
|
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facesets[fileno].faces[num].checksum = chksum; |
314 |
root |
1.2 |
} |
315 |
root |
1.15 |
|
316 |
root |
1.3 |
close_and_delete (infile, compressed); |
317 |
|
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} /* For fileno < MAX_FACE_SETS */ |
318 |
elmex |
1.1 |
} |
319 |
|
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|
320 |
|
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/** |
321 |
|
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* Client tells us what type of faces it wants. Also sets |
322 |
|
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* the caching attribute. |
323 |
|
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* |
324 |
|
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*/ |
325 |
root |
1.3 |
void |
326 |
root |
1.13 |
SetFaceMode (char *buf, int len, client *ns) |
327 |
elmex |
1.1 |
{ |
328 |
root |
1.3 |
int mask = (atoi (buf) & CF_FACE_CACHE), mode = (atoi (buf) & ~CF_FACE_CACHE); |
329 |
elmex |
1.1 |
|
330 |
root |
1.3 |
if (mode == CF_FACE_NONE) |
331 |
root |
1.7 |
ns->facecache = 1; |
332 |
root |
1.3 |
else if (mode != CF_FACE_PNG) |
333 |
root |
1.14 |
ns->send_packet_printf ("drawinfo %d %s", NDI_RED, "Warning - send unsupported face mode. Will use Png"); |
334 |
root |
1.7 |
|
335 |
root |
1.3 |
if (mask) |
336 |
root |
1.7 |
ns->facecache = 1; |
337 |
elmex |
1.1 |
} |
338 |
|
|
|
339 |
|
|
/** |
340 |
|
|
* Client has requested pixmap that it somehow missed getting. |
341 |
|
|
* This will be called often if the client is |
342 |
|
|
* caching images. |
343 |
|
|
*/ |
344 |
root |
1.3 |
void |
345 |
root |
1.15 |
SendFaceCmd (char *buf, int len, client *ns) |
346 |
elmex |
1.1 |
{ |
347 |
root |
1.15 |
uint16 facenum = atoi (buf); |
348 |
elmex |
1.1 |
|
349 |
root |
1.3 |
if (facenum != 0) |
350 |
|
|
esrv_send_face (ns, facenum, 1); |
351 |
elmex |
1.1 |
} |
352 |
|
|
|
353 |
|
|
/** |
354 |
|
|
* Sends a face to a client if they are in pixmap mode |
355 |
|
|
* nothing gets sent in bitmap mode. |
356 |
|
|
* If nocache is true (nonzero), ignore the cache setting from the client - |
357 |
|
|
* this is needed for the askface, in which we really do want to send the |
358 |
|
|
* face (and askface is the only place that should be setting it). Otherwise, |
359 |
|
|
* we look at the facecache, and if set, send the image name. |
360 |
|
|
*/ |
361 |
root |
1.3 |
void |
362 |
root |
1.13 |
esrv_send_face (client *ns, short face_num, int nocache) |
363 |
elmex |
1.1 |
{ |
364 |
root |
1.3 |
char fallback; |
365 |
elmex |
1.1 |
|
366 |
root |
1.3 |
if (face_num <= 0 || face_num >= nrofpixmaps) |
367 |
|
|
{ |
368 |
|
|
LOG (llevError, "esrv_send_face (%d) out of bounds??\n", face_num); |
369 |
|
|
return; |
370 |
|
|
} |
371 |
|
|
|
372 |
root |
1.8 |
packet sl; |
373 |
root |
1.3 |
fallback = get_face_fallback (ns->faceset, face_num); |
374 |
|
|
|
375 |
|
|
if (facesets[fallback].faces[face_num].data == NULL) |
376 |
|
|
{ |
377 |
|
|
LOG (llevError, "esrv_send_face: faces[%d].data == NULL\n", face_num); |
378 |
|
|
return; |
379 |
|
|
} |
380 |
|
|
|
381 |
|
|
if (ns->facecache && !nocache) |
382 |
|
|
{ |
383 |
root |
1.6 |
sl << (ns->image2 ? "face2 " : "face1 ") |
384 |
|
|
<< uint16 (face_num); |
385 |
|
|
|
386 |
root |
1.3 |
if (ns->image2) |
387 |
root |
1.6 |
sl << uint8 (fallback); |
388 |
|
|
|
389 |
|
|
sl << uint32 (facesets[fallback].faces[face_num].checksum) |
390 |
|
|
<< new_faces[face_num].name; |
391 |
root |
1.3 |
|
392 |
root |
1.11 |
ns->send_packet (sl); |
393 |
root |
1.3 |
} |
394 |
|
|
else |
395 |
|
|
{ |
396 |
root |
1.6 |
sl << (ns->image2 ? "image2 " : "image ") |
397 |
|
|
<< uint32 (face_num); |
398 |
|
|
|
399 |
root |
1.3 |
if (ns->image2) |
400 |
root |
1.6 |
sl << uint8 (fallback); |
401 |
|
|
|
402 |
|
|
sl << uint32 (facesets[fallback].faces[face_num].datalen) |
403 |
|
|
<< data (facesets[fallback].faces[face_num].data, facesets[fallback].faces[face_num].datalen); |
404 |
|
|
|
405 |
root |
1.11 |
ns->send_packet (sl); |
406 |
elmex |
1.1 |
} |
407 |
root |
1.6 |
|
408 |
root |
1.3 |
ns->faces_sent[face_num] |= NS_FACESENT_FACE; |
409 |
elmex |
1.1 |
} |
410 |
|
|
|
411 |
|
|
/** |
412 |
|
|
* Sends the number of images, checksum of the face file, |
413 |
|
|
* and the image_info file information. See the doc/Developers/protocol |
414 |
|
|
* if you want further detail. |
415 |
|
|
*/ |
416 |
|
|
|
417 |
root |
1.3 |
void |
418 |
root |
1.15 |
send_image_info (client *ns, char *params) |
419 |
elmex |
1.1 |
{ |
420 |
root |
1.8 |
packet sl; |
421 |
elmex |
1.1 |
|
422 |
root |
1.19 |
sl.printf ("replyinfo image_info\n%d\n%u\n", nrofpixmaps - 1, (unsigned int)bmaps_checksum); |
423 |
root |
1.6 |
|
424 |
|
|
for (int i = 0; i < MAX_FACE_SETS; i++) |
425 |
|
|
if (facesets[i].prefix) |
426 |
root |
1.15 |
sl.printf ("%d:%s:%s:%d:%s:%s:%s", i, |
427 |
|
|
facesets[i].prefix, facesets[i].fullname , facesets[i].fallback, |
428 |
|
|
facesets[i].size , facesets[i].extension, facesets[i].comment); |
429 |
elmex |
1.1 |
|
430 |
root |
1.11 |
ns->send_packet (sl); |
431 |
elmex |
1.1 |
} |
432 |
|
|
|
433 |
|
|
/** |
434 |
|
|
* Sends requested face information. |
435 |
|
|
* \param ns socket to send to |
436 |
|
|
* \param params contains first and last index of face |
437 |
|
|
* |
438 |
|
|
* For each image in [start..stop] sends |
439 |
|
|
* - checksum |
440 |
|
|
* - name |
441 |
|
|
*/ |
442 |
root |
1.3 |
void |
443 |
root |
1.15 |
send_image_sums (client *ns, char *params) |
444 |
elmex |
1.1 |
{ |
445 |
root |
1.3 |
int start, stop; |
446 |
|
|
char *cp, buf[MAX_BUF]; |
447 |
|
|
|
448 |
root |
1.8 |
packet sl; |
449 |
root |
1.3 |
|
450 |
|
|
start = atoi (params); |
451 |
|
|
for (cp = params; *cp != '\0'; cp++) |
452 |
|
|
if (*cp == ' ') |
453 |
|
|
break; |
454 |
|
|
|
455 |
|
|
stop = atoi (cp); |
456 |
|
|
if (stop < start || *cp == '\0' || (stop - start) > 1000 || stop >= nrofpixmaps) |
457 |
|
|
{ |
458 |
root |
1.7 |
sl.printf ("replyinfo image_sums %d %d", start, stop); |
459 |
|
|
ns->send_packet (sl); |
460 |
|
|
sl.reset (); |
461 |
root |
1.3 |
return; |
462 |
|
|
} |
463 |
|
|
|
464 |
root |
1.6 |
sl.printf ("replyinfo image_sums %d %d ", start, stop); |
465 |
root |
1.3 |
|
466 |
root |
1.6 |
for (int i = start; i <= stop; i++) |
467 |
root |
1.3 |
{ |
468 |
|
|
ns->faces_sent[i] |= NS_FACESENT_FACE; |
469 |
|
|
|
470 |
root |
1.6 |
int qq = get_face_fallback (ns->faceset, i); |
471 |
|
|
|
472 |
|
|
sl << uint16 (i) |
473 |
|
|
<< uint32 (facesets[qq].faces[i].checksum) |
474 |
|
|
<< uint8 (qq) |
475 |
|
|
<< data8 (&new_faces[i].name, new_faces[i].name.length () + 1); |
476 |
root |
1.3 |
} |
477 |
root |
1.6 |
|
478 |
root |
1.3 |
/* It would make more sense to catch this pre-emptively in the code above. |
479 |
|
|
* however, if this really happens, we probably just want to cut down the |
480 |
|
|
* size to less than 1000, since that is what we claim the protocol would |
481 |
|
|
* support. |
482 |
|
|
*/ |
483 |
root |
1.9 |
if (sl.length () >= MAXSOCKBUF) |
484 |
root |
1.3 |
{ |
485 |
root |
1.9 |
LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF); |
486 |
root |
1.3 |
abort (); |
487 |
elmex |
1.1 |
} |
488 |
root |
1.6 |
|
489 |
root |
1.11 |
ns->send_packet (sl); |
490 |
elmex |
1.1 |
} |
491 |
root |
1.6 |
|