1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
/* $Id$
*****************************************************************************
*
* File: fko_state.h
*
* Author: Damien S. Stuart
*
* Purpose: Defines various states and flags for libfko operations.
*
* Copyright 2009-2010 Damien Stuart (dstuart@dstuart.org)
*
* License (GNU Public License):
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
*****************************************************************************
*/
#ifndef FKO_STATE_H
#define FKO_STATE_H 1
/* General state flag bit values.
*/
typedef enum {
FKO_CTX_SET = 1, /* Set when ctx is initialized */
FKO_DATA_MODIFIED = 1 << 1,
FKO_STATE_RESERVED_2 = 1 << 2,
STATE_RESERVED_3 = 1 << 3,
STATE_RESERVED_4 = 1 << 4,
STATE_RESERVED_5 = 1 << 5,
FKO_SPA_MSG_TYPE_MODIFIED = 1 << 6,
FKO_CTX_SET_2 = 1 << 7, /* Set when ctx is initialized */
STATE_RESERVED_8 = 1 << 8,
STATE_RESERVED_9 = 1 << 9,
STATE_RESERVED_10 = 1 << 10,
STATE_RESERVED_11 = 1 << 11,
FKO_DIGEST_TYPE_MODIFIED = 1 << 12,
FKO_ENCRYPT_TYPE_MODIFIED = 1 << 13,
STATE_RESERVED_14 = 1 << 14,
FKO_BACKWARD_COMPATIBLE = 1 << 15
} fko_state_flags_t;
/* This is used in conjunction with the ctx->initial value as a means to
* determine if the ctx has been properly initialized. However, this
* may not work 100% of the time as it is possible (though not likely)
* an ctx may have values that match both the flags and the ctx->initial
* value.
*/
#define FKO_CTX_INITIALIZED (FKO_CTX_SET|FKO_CTX_SET_2)
#define FKO_SET_CTX_INITIALIZED(ctx) \
(ctx->state |= (FKO_CTX_INITIALIZED))
#define FKO_CLEAR_CTX_INITIALIZED(ctx) \
(ctx->state &= (0xffff & ~FKO_CTX_INITIALIZED))
/* Consolidate all SPA data modified flags.
*/
#define FKO_SPA_DATA_MODIFIED ( \
FKO_DATA_MODIFIED | FKO_SPA_MSG_TYPE_MODIFIED \
| FKO_DIGEST_TYPE_MODIFIED | FKO_ENCRYPT_TYPE_MODIFIED )
/* This should return true if any SPA data field has been modifed since the
* last encode/encrypt.
*/
#define FKO_IS_SPA_DATA_MODIFIED(ctx) (ctx->state & FKO_SPA_DATA_MODIFIED)
/* Clear all SPA data modified flags. This is normally called after a
* succesful encode/digest/encryption cycle.
*/
#define FKO_CLEAR_SPA_DATA_MODIFIED(ctx) \
(ctx->state &= (0xffff & ~FKO_SPA_DATA_MODIFIED))
/* Macros used for determining ctx initialization state.
*/
#define CTX_INITIALIZED(ctx) (ctx != NULL && ctx->initval == FKO_CTX_INITIALIZED)
#endif /* FKO_STATE_H */
/***EOF***/
|
