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
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
/*
* Copyright (C) 2012-2014 Free Software Foundation, Inc.
*
* This file is part of LIBTASN1.
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
/* Written by Simon Josefsson */
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <limits.h>
#include "libtasn1.h"
int
main (int argc, char **argv)
{
/* Test that values larger than long are rejected. This has worked
fine with all versions of libtasn1. */
int verbose = 0;
if (argc > 1)
verbose = 1;
{
unsigned char der[] = "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF";
long l;
int len;
l = asn1_get_length_der (der, sizeof der, &len);
if (l == -2L)
{
if (verbose)
puts ("OK: asn1_get_length_der bignum");
}
else
{
printf ("ERROR: asn1_get_length_der bignum (l %ld len %d)\n", l, len);
return 1;
}
}
/* Test that values larger than int but smaller than long are
rejected. This limitation was introduced with libtasn1 2.12. */
if (LONG_MAX > INT_MAX)
{
unsigned long num = ((long) UINT_MAX) << 2;
unsigned char der[20];
int der_len;
long l;
int len;
asn1_length_der (num, der, &der_len);
l = asn1_get_length_der (der, der_len, &len);
if (l == -2L)
{
if (verbose)
puts ("OK: asn1_get_length_der intnum");
}
else
{
printf ("ERROR: asn1_get_length_der intnum (l %ld len %d)\n", l,
len);
return 1;
}
}
/* Test that values larger than would fit in the input string are
rejected. This problem was fixed in libtasn1 2.12. */
{
unsigned long num = 64;
unsigned char der[20];
int der_len;
long l;
int len;
asn1_length_der (num, der, &der_len);
der_len = sizeof (der);
l = asn1_get_length_der (der, der_len, &len);
if (l == -4L)
{
if (verbose)
puts ("OK: asn1_get_length_der overflow-small");
}
else
{
printf ("ERROR: asn1_get_length_der overflow-small (l %ld len %d)\n",
l, len);
return 1;
}
}
/* Test that values larger than would fit in the input string are
rejected. This problem was fixed in libtasn1 2.12. */
{
unsigned long num = 1073741824;
unsigned char der[20];
int der_len;
long l;
int len;
asn1_length_der (num, der, &der_len);
der_len = sizeof (der);
l = asn1_get_length_der (der, der_len, &len);
if (l == -4L)
{
if (verbose)
puts ("OK: asn1_get_length_der overflow-large1");
}
else
{
printf ("ERROR: asn1_get_length_der overflow-large1 (l %ld len %d)\n",
l, len);
return 1;
}
}
/* Test that values larger than would fit in the input string are
rejected. This problem was fixed in libtasn1 2.12. */
{
unsigned long num = 2147483649;
unsigned char der[20];
int der_len;
long l;
int len;
asn1_length_der (num, der, &der_len);
der_len = sizeof (der);
l = asn1_get_length_der (der, der_len, &len);
if (l == -2L)
{
if (verbose)
puts ("OK: asn1_get_length_der overflow-large2");
}
else
{
printf ("ERROR: asn1_get_length_der overflow-large2 (l %ld len %d)\n",
l, len);
return 1;
}
}
return 0;
}
|
