• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 /* $OpenBSD: buffer.h,v 1.25 2014/04/30 05:29:56 djm Exp $ */
2 
3 /*
4  * Copyright (c) 2012 Damien Miller <djm@mindrot.org>
5  *
6  * Permission to use, copy, modify, and distribute this software for any
7  * purpose with or without fee is hereby granted, provided that the above
8  * copyright notice and this permission notice appear in all copies.
9  *
10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17  */
18 
19 /* Emulation wrappers for legacy OpenSSH buffer API atop sshbuf */
20 
21 #ifndef BUFFER_H
22 #define BUFFER_H
23 
24 #include "sshbuf.h"
25 
26 typedef struct sshbuf Buffer;
27 
28 #define buffer_init(b)		sshbuf_init(b)
29 #define buffer_clear(b)		sshbuf_reset(b)
30 #define buffer_free(b)		sshbuf_free(b)
31 #define buffer_dump(b)		sshbuf_dump(b, stderr)
32 
33 /* XXX cast is safe: sshbuf never stores more than len 2^31 */
34 #define buffer_len(b)		((u_int) sshbuf_len(b))
35 #define	buffer_ptr(b)		sshbuf_mutable_ptr(b)
36 
37 void	 buffer_append(Buffer *, const void *, u_int);
38 void	*buffer_append_space(Buffer *, u_int);
39 int	 buffer_check_alloc(Buffer *, u_int);
40 void	 buffer_get(Buffer *, void *, u_int);
41 
42 void	 buffer_consume(Buffer *, u_int);
43 void	 buffer_consume_end(Buffer *, u_int);
44 
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 #include <openssl/objects.h>
51 #include <openssl/bn.h>
52 void    buffer_put_bignum(Buffer *, const BIGNUM *);
53 void    buffer_put_bignum2(Buffer *, const BIGNUM *);
54 void	buffer_get_bignum(Buffer *, BIGNUM *);
55 void	buffer_get_bignum2(Buffer *, BIGNUM *);
56 void	buffer_put_bignum2_from_string(Buffer *, const u_char *, u_int);
57 
58 u_short	buffer_get_short(Buffer *);
59 void	buffer_put_short(Buffer *, u_short);
60 
61 u_int	buffer_get_int(Buffer *);
62 void    buffer_put_int(Buffer *, u_int);
63 
64 u_int64_t buffer_get_int64(Buffer *);
65 void	buffer_put_int64(Buffer *, u_int64_t);
66 
67 int     buffer_get_char(Buffer *);
68 void    buffer_put_char(Buffer *, int);
69 
70 void   *buffer_get_string(Buffer *, u_int *);
71 const void *buffer_get_string_ptr(Buffer *, u_int *);
72 void    buffer_put_string(Buffer *, const void *, u_int);
73 char   *buffer_get_cstring(Buffer *, u_int *);
74 void	buffer_put_cstring(Buffer *, const char *);
75 
76 #define buffer_skip_string(b) (void)buffer_get_string_ptr(b, NULL);
77 
78 int	buffer_put_bignum_ret(Buffer *, const BIGNUM *);
79 int	buffer_get_bignum_ret(Buffer *, BIGNUM *);
80 int	buffer_put_bignum2_ret(Buffer *, const BIGNUM *);
81 int	buffer_get_bignum2_ret(Buffer *, BIGNUM *);
82 int	buffer_get_short_ret(u_short *, Buffer *);
83 int	buffer_get_int_ret(u_int *, Buffer *);
84 int	buffer_get_int64_ret(u_int64_t *, Buffer *);
85 void	*buffer_get_string_ret(Buffer *, u_int *);
86 char	*buffer_get_cstring_ret(Buffer *, u_int *);
87 const void *buffer_get_string_ptr_ret(Buffer *, u_int *);
88 int	buffer_get_char_ret(char *, Buffer *);
89 
90 #ifdef OPENSSL_HAS_ECC
91 #include <openssl/ec.h>
92 int	buffer_put_ecpoint_ret(Buffer *, const EC_GROUP *, const EC_POINT *);
93 void	buffer_put_ecpoint(Buffer *, const EC_GROUP *, const EC_POINT *);
94 int	buffer_get_ecpoint_ret(Buffer *, const EC_GROUP *, EC_POINT *);
95 void	buffer_get_ecpoint(Buffer *, const EC_GROUP *, EC_POINT *);
96 #endif
97 
98 #endif	/* BUFFER_H */
99 
100