source: trunk/libtransmission/bencode.h @ 241

Last change on this file since 241 was 241, checked in by joshe, 16 years ago

Make sure not to go past the end of the buffer when loading bencoded data.
Add code to encode using bencoding.

File size: 2.2 KB
Line 
1/******************************************************************************
2 * Copyright (c) 2005 Eric Petit
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20 * DEALINGS IN THE SOFTWARE.
21 *****************************************************************************/
22
23#ifndef TR_BENCODE_H
24#define TR_BENCODE_H 1
25
26typedef struct benc_val_s
27{
28    char * begin;
29    char * end;
30#define TYPE_INT  1
31#define TYPE_STR  2
32#define TYPE_LIST 4
33#define TYPE_DICT 8
34    char   type;
35    union
36    {
37        int64_t i;
38        struct
39        {
40            int    i;
41            char * s;
42        } s;
43        struct
44        {
45            int                 alloc;
46            int                 count;
47            struct benc_val_s * vals;
48        } l;
49    } val;
50} benc_val_t;
51
52#define tr_bencLoad(b,l,v,e) _tr_bencLoad((char*)(b),(l),(v),(char**)(e))
53int          _tr_bencLoad( char * buf, size_t len, benc_val_t * val,
54                           char ** end );
55void         tr_bencPrint( benc_val_t * val );
56void         tr_bencFree( benc_val_t * val );
57benc_val_t * tr_bencDictFind( benc_val_t * val, char * key );
58char *       tr_bencSaveMalloc( benc_val_t * val, size_t * len );
59int          tr_bencSave( benc_val_t * val, char ** buf,
60                          size_t * used, size_t * max );
61
62#endif
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