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1 | /* $OpenBSD: buffer.h,v 1.13 2005/03/14 11:46:56 markus Exp $ */ | |
2 | ||
3 | /* | |
4 | * Author: Tatu Ylonen <ylo@cs.hut.fi> | |
5 | * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland | |
6 | * All rights reserved | |
7 | * Code for manipulating FIFO buffers. | |
8 | * | |
9 | * As far as I am concerned, the code I have written for this software | |
10 | * can be used freely for any purpose. Any derived versions of this | |
11 | * software must be clearly marked as such, and if the derived work is | |
12 | * incompatible with the protocol description in the RFC file, it must be | |
13 | * called by a name other than "ssh" or "Secure Shell". | |
14 | */ | |
15 | ||
16 | #ifndef BUFFER_H | |
17 | #define BUFFER_H | |
18 | ||
19 | typedef struct { | |
20 | u_char *buf; /* Buffer for data. */ | |
21 | u_int alloc; /* Number of bytes allocated for data. */ | |
22 | u_int offset; /* Offset of first byte containing data. */ | |
23 | u_int end; /* Offset of last byte containing data. */ | |
24 | } Buffer; | |
25 | ||
26 | #define BUFFER_MAX_CHUNK 0x100000 | |
27 | #define BUFFER_MAX_LEN 0xa00000 | |
28 | ||
29 | void buffer_init(Buffer *); | |
30 | void buffer_clear(Buffer *); | |
31 | void buffer_free(Buffer *); | |
32 | ||
33 | u_int buffer_len(Buffer *); | |
34 | void *buffer_ptr(Buffer *); | |
35 | ||
36 | void buffer_append(Buffer *, const void *, u_int); | |
37 | void *buffer_append_space(Buffer *, u_int); | |
38 | ||
39 | void buffer_get(Buffer *, void *, u_int); | |
40 | ||
41 | void buffer_consume(Buffer *, u_int); | |
42 | void buffer_consume_end(Buffer *, u_int); | |
43 | ||
44 | void buffer_dump(Buffer *); | |
45 | ||
46 | int buffer_get_ret(Buffer *, void *, u_int); | |
47 | int buffer_consume_ret(Buffer *, u_int); | |
48 | int buffer_consume_end_ret(Buffer *, u_int); | |
49 | ||
50 | #endif /* BUFFER_H */ |