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5156b1a1 | 1 | /* $OpenBSD: buffer.h,v 1.17 2008/05/08 06:59:01 markus Exp $ */ |
473db5ab | 2 | |
3c0ef626 | 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 | ||
3c0ef626 | 16 | #ifndef BUFFER_H |
17 | #define BUFFER_H | |
6df46d40 | 18 | |
19 | /* move the following to a more appropriate place and name */ | |
20 | #define BUFFER_MAX_LEN_HPN 0x4000000 /* 64MB */ | |
3c0ef626 | 21 | |
22 | typedef struct { | |
473db5ab | 23 | u_char *buf; /* Buffer for data. */ |
3c0ef626 | 24 | u_int alloc; /* Number of bytes allocated for data. */ |
25 | u_int offset; /* Offset of first byte containing data. */ | |
26 | u_int end; /* Offset of last byte containing data. */ | |
27 | } Buffer; | |
28 | ||
29 | void buffer_init(Buffer *); | |
30 | void buffer_clear(Buffer *); | |
31 | void buffer_free(Buffer *); | |
32 | ||
33 | u_int buffer_len(Buffer *); | |
473db5ab | 34 | void *buffer_ptr(Buffer *); |
3c0ef626 | 35 | |
473db5ab | 36 | void buffer_append(Buffer *, const void *, u_int); |
37 | void *buffer_append_space(Buffer *, u_int); | |
3c0ef626 | 38 | |
30460aeb | 39 | int buffer_check_alloc(Buffer *, u_int); |
40 | ||
473db5ab | 41 | void buffer_get(Buffer *, void *, u_int); |
3c0ef626 | 42 | |
43 | void buffer_consume(Buffer *, u_int); | |
44 | void buffer_consume_end(Buffer *, u_int); | |
45 | ||
46 | void buffer_dump(Buffer *); | |
47 | ||
473db5ab | 48 | int buffer_get_ret(Buffer *, void *, u_int); |
49 | int buffer_consume_ret(Buffer *, u_int); | |
50 | int buffer_consume_end_ret(Buffer *, u_int); | |
51 | ||
30460aeb | 52 | #include <openssl/bn.h> |
53 | ||
54 | void buffer_put_bignum(Buffer *, const BIGNUM *); | |
55 | void buffer_put_bignum2(Buffer *, const BIGNUM *); | |
56 | void buffer_get_bignum(Buffer *, BIGNUM *); | |
57 | void buffer_get_bignum2(Buffer *, BIGNUM *); | |
58 | ||
59 | u_short buffer_get_short(Buffer *); | |
60 | void buffer_put_short(Buffer *, u_short); | |
61 | ||
62 | u_int buffer_get_int(Buffer *); | |
63 | void buffer_put_int(Buffer *, u_int); | |
64 | ||
65 | u_int64_t buffer_get_int64(Buffer *); | |
66 | void buffer_put_int64(Buffer *, u_int64_t); | |
67 | ||
68 | int buffer_get_char(Buffer *); | |
69 | void buffer_put_char(Buffer *, int); | |
70 | ||
71 | void *buffer_get_string(Buffer *, u_int *); | |
5156b1a1 | 72 | void *buffer_get_string_ptr(Buffer *, u_int *); |
30460aeb | 73 | void buffer_put_string(Buffer *, const void *, u_int); |
74 | void buffer_put_cstring(Buffer *, const char *); | |
75 | ||
76 | #define buffer_skip_string(b) \ | |
77 | do { u_int l = buffer_get_int(b); buffer_consume(b, l); } while (0) | |
78 | ||
79 | int buffer_put_bignum_ret(Buffer *, const BIGNUM *); | |
80 | int buffer_get_bignum_ret(Buffer *, BIGNUM *); | |
81 | int buffer_put_bignum2_ret(Buffer *, const BIGNUM *); | |
82 | int buffer_get_bignum2_ret(Buffer *, BIGNUM *); | |
83 | int buffer_get_short_ret(u_short *, Buffer *); | |
84 | int buffer_get_int_ret(u_int *, Buffer *); | |
85 | int buffer_get_int64_ret(u_int64_t *, Buffer *); | |
86 | void *buffer_get_string_ret(Buffer *, u_int *); | |
87 | int buffer_get_char_ret(char *, Buffer *); | |
88 | ||
3c0ef626 | 89 | #endif /* BUFFER_H */ |