archive_hmac_private.h revision 302001 
1/*-
2* Copyright (c) 2014 Michihiro NAKAJIMA
3* All rights reserved.
4*
5* Redistribution and use in source and binary forms, with or without
6* modification, are permitted provided that the following conditions
7* are met:
8* 1. Redistributions of source code must retain the above copyright
9*    notice, this list of conditions and the following disclaimer.
10* 2. Redistributions in binary form must reproduce the above copyright
11*    notice, this list of conditions and the following disclaimer in the
12*    documentation and/or other materials provided with the distribution.
13*
14* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
15* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
18* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24*/
25
26#ifndef __LIBARCHIVE_BUILD
27#error This header is only to be used internally to libarchive.
28#endif
29
30#ifndef ARCHIVE_HMAC_PRIVATE_H_INCLUDED
31#define ARCHIVE_HMAC_PRIVATE_H_INCLUDED
32
33/*
34 * On systems that do not support any recognized crypto libraries,
35 * the archive_hmac.c file is expected to define no usable symbols.
36 *
37 * But some compilers and linkers choke on empty object files, so
38 * define a public symbol that will always exist.  This could
39 * be removed someday if this file gains another always-present
40 * symbol definition.
41 */
42int __libarchive_hmac_build_hack(void);
43
44#ifdef __APPLE__
45# include <AvailabilityMacros.h>
46# if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
47#  define ARCHIVE_HMAC_USE_Apple_CommonCrypto
48# endif
49#endif
50
51#ifdef ARCHIVE_HMAC_USE_Apple_CommonCrypto
52#include <CommonCrypto/CommonHMAC.h>
53
54typedef	CCHmacContext archive_hmac_sha1_ctx;
55
56#elif defined(_WIN32) && !defined(__CYGWIN__) && defined(HAVE_BCRYPT_H)
57#include <bcrypt.h>
58
59typedef struct {
60	BCRYPT_ALG_HANDLE	hAlg;
61	BCRYPT_HASH_HANDLE	hHash;
62	DWORD				hash_len;
63	PBYTE				hash;
64
65} archive_hmac_sha1_ctx;
66
67#elif defined(HAVE_LIBNETTLE) && defined(HAVE_NETTLE_HMAC_H)
68#include <nettle/hmac.h>
69
70typedef	struct hmac_sha1_ctx archive_hmac_sha1_ctx;
71
72#elif defined(HAVE_LIBCRYPTO)
73#include <openssl/hmac.h>
74
75typedef	HMAC_CTX archive_hmac_sha1_ctx;
76
77#else
78
79typedef int archive_hmac_sha1_ctx;
80
81#endif
82
83
84/* HMAC */
85#define archive_hmac_sha1_init(ctx, key, key_len)\
86	__archive_hmac.__hmac_sha1_init(ctx, key, key_len)
87#define archive_hmac_sha1_update(ctx, data, data_len)\
88	__archive_hmac.__hmac_sha1_update(ctx, data, data_len)
89#define archive_hmac_sha1_final(ctx, out, out_len)\
90  	__archive_hmac.__hmac_sha1_final(ctx, out, out_len)
91#define archive_hmac_sha1_cleanup(ctx)\
92	__archive_hmac.__hmac_sha1_cleanup(ctx)
93
94
95struct archive_hmac {
96	/* HMAC */
97	int (*__hmac_sha1_init)(archive_hmac_sha1_ctx *, const uint8_t *,
98		size_t);
99	void (*__hmac_sha1_update)(archive_hmac_sha1_ctx *, const uint8_t *,
100		size_t);
101	void (*__hmac_sha1_final)(archive_hmac_sha1_ctx *, uint8_t *, size_t *);
102	void (*__hmac_sha1_cleanup)(archive_hmac_sha1_ctx *);
103};
104
105extern const struct archive_hmac __archive_hmac;
106#endif /* ARCHIVE_HMAC_PRIVATE_H_INCLUDED */
107