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