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
93
94
95
96
97
98
99
100
101
|
/*
* Copyright (c) 2010 .SE (The Internet Infrastructure Foundation)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*****************************************************************************
access.cpp
Implements the access rules.
*****************************************************************************/
#include "access.h"
#include <stdlib.h>
#include <stdio.h>
// Checks if a read operation is allowed on a given object type.
//
// Type of session
// Type of object R/O Public | R/W Public | R/O User | R/W User | R/W SO
// ------------------------------------------------------------------------------
// Public session object OK | OK | OK | OK | OK
// Private session object UNLI | UNLI | OK | OK | UNLI
// Public token object OK | OK | OK | OK | OK
// Private token object UNLI | UNLI | OK | OK | UNLI
//
// OK = CKR_OK
// SRO = CKR_SESSION_READ_ONLY
// UNLI = CKR_USER_NOT_LOGGED_IN
// Can we do read operations?
CK_RV haveRead(CK_STATE sessionState, CK_BBOOL /*isTokenObject*/, CK_BBOOL isPrivateObject)
{
switch (sessionState)
{
case CKS_RO_PUBLIC_SESSION:
case CKS_RW_PUBLIC_SESSION:
case CKS_RW_SO_FUNCTIONS:
return isPrivateObject ? CKR_USER_NOT_LOGGED_IN : CKR_OK;
case CKS_RO_USER_FUNCTIONS:
case CKS_RW_USER_FUNCTIONS:
return CKR_OK;
}
return CKR_GENERAL_ERROR; // internal error, switch should have covered every state
}
// Checks if a write operation is allowed on a given object type.
//
// Type of session
// Type of object R/O Public | R/W Public | R/O User | R/W User | R/W SO
// ------------------------------------------------------------------------------
// Public session object OK | OK | OK | OK | OK
// Private session object UNLI | UNLI | OK | OK | UNLI
// Public token object SRO | OK | SRO | OK | OK
// Private token object SRO/UNLI | UNLI | SRO | OK | UNLI
//
// OK = CKR_OK
// SRO = CKR_SESSION_READ_ONLY
// UNLI = CKR_USER_NOT_LOGGED_IN
// In the situation where both SRO and UNLI may be returned we favor SRO.
// Can we do write operations?
CK_RV haveWrite(CK_STATE sessionState, CK_BBOOL isTokenObject, CK_BBOOL isPrivateObject)
{
switch (sessionState)
{
case CKS_RO_PUBLIC_SESSION:
if (isTokenObject)
return CKR_SESSION_READ_ONLY;
else
return isPrivateObject ? CKR_USER_NOT_LOGGED_IN : CKR_OK;
case CKS_RW_PUBLIC_SESSION:
case CKS_RW_SO_FUNCTIONS:
return isPrivateObject ? CKR_USER_NOT_LOGGED_IN : CKR_OK;
case CKS_RO_USER_FUNCTIONS:
return isTokenObject ? CKR_SESSION_READ_ONLY : CKR_OK;
case CKS_RW_USER_FUNCTIONS:
return CKR_OK;
}
return CKR_GENERAL_ERROR; // internal error, switch should have covered every state
}
|
