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
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
/* $OpenBSD: x509_info.c,v 1.1 2020/07/23 17:15:35 schwarze Exp $ */
/*
* Copyright (c) 2020 Ingo Schwarze <schwarze@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <err.h>
#include <string.h>
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/pem.h>
#include <openssl/x509.h>
static const char *const bogus_pem = "\
-----BEGIN BOGUS----- \n\
-----END BOGUS----- \n\
";
static const char *const cert_pem = "\
-----BEGIN CERTIFICATE----- \n\
MIIDpTCCAo2gAwIBAgIJAPYm3GvOr5eTMA0GCSqGSIb3DQEBBQUAMHAxCzAJBgNV \n\
BAYTAlVLMRYwFAYDVQQKDA1PcGVuU1NMIEdyb3VwMSIwIAYDVQQLDBlGT1IgVEVT \n\
VElORyBQVVJQT1NFUyBPTkxZMSUwIwYDVQQDDBxPcGVuU1NMIFRlc3QgSW50ZXJt \n\
ZWRpYXRlIENBMB4XDTE0MDUyNDE0NDUxMVoXDTI0MDQwMTE0NDUxMVowZDELMAkG \n\
A1UEBhMCVUsxFjAUBgNVBAoMDU9wZW5TU0wgR3JvdXAxIjAgBgNVBAsMGUZPUiBU \n\
RVNUSU5HIFBVUlBPU0VTIE9OTFkxGTAXBgNVBAMMEFRlc3QgQ2xpZW50IENlcnQw \n\
ggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQC0ranbHRLcLVqN+0BzcZpY \n\
+yOLqxzDWT1LD9eW1stC4NzXX9/DCtSIVyN7YIHdGLrIPr64IDdXXaMRzgZ2rOKs \n\
lmHCAiFpO/ja99gGCJRxH0xwQatqAULfJVHeUhs7OEGOZc2nWifjqKvGfNTilP7D \n\
nwi69ipQFq9oS19FmhwVHk2wg7KZGHI1qDyG04UrfCZMRitvS9+UVhPpIPjuiBi2 \n\
x3/FZIpL5gXJvvFK6xHY63oq2asyzBATntBgnP4qJFWWcvRx24wF1PnZabxuVoL2 \n\
bPnQ/KvONDrw3IdqkKhYNTul7jEcu3OlcZIMw+7DiaKJLAzKb/bBF5gm/pwW6As9 \n\
AgMBAAGjTjBMMAwGA1UdEwEB/wQCMAAwDgYDVR0PAQH/BAQDAgXgMCwGCWCGSAGG \n\
+EIBDQQfFh1PcGVuU1NMIEdlbmVyYXRlZCBDZXJ0aWZpY2F0ZTANBgkqhkiG9w0B \n\
AQUFAAOCAQEAJzA4KTjkjXGSC4He63yX9Br0DneGBzjAwc1H6f72uqnCs8m7jgkE \n\
PQJFdTzQUKh97QPUuayZ2gl8XHagg+iWGy60Kw37gQ0+lumCN2sllvifhHU9R03H \n\
bWtS4kue+yQjMbrzf3zWygMDgwvFOUAIgBpH9qGc+CdNu97INTYd0Mvz51vLlxRn \n\
sC5aBYCWaZFnw3lWYxf9eVFRy9U+DkYFqX0LpmbDtcKP7AZGE6ZwSzaim+Cnoz1u \n\
Cgn+QmpFXgJKMFIZ82iSZISn+JkCCGxctZX1lMvai4Wi8Y0HxW9FTFZ6KBNwwE4B \n\
zjbN/ehBkgLlW/DWfi44DvwUHmuU6QP3cw== \n\
-----END CERTIFICATE----- \n\
";
int
main(void)
{
BIO *bp;
STACK_OF(X509_INFO) *skin, *skout;
X509_INFO *info0, *info1;
const char *errdata;
unsigned long errcode;
int errcount, errflags, num;
errcount = 0;
if ((skin = sk_X509_INFO_new_null()) == NULL)
err(1, "sk_X509_INFO_new_null");
/* Test with empty input. */
if ((bp = BIO_new_mem_buf("", 0)) == NULL)
err(1, "BIO_new_mem_buf(empty)");
if ((skout = PEM_X509_INFO_read_bio(bp, skin, NULL, NULL)) == NULL)
err(1, "empty input: %s",
ERR_error_string(ERR_get_error(), NULL));
if (skout != skin)
errx(1, "empty input did not return the same stack");
skout = NULL;
if ((num = sk_X509_INFO_num(skin)) != 0)
errx(1, "empty input created %d X509_INFO objects", num);
BIO_free(bp);
/* Test with bogus input. */
if ((bp = BIO_new_mem_buf(bogus_pem, strlen(bogus_pem))) == NULL)
err(1, "BIO_new_mem_buf(bogus_pem)");
if ((skout = PEM_X509_INFO_read_bio(bp, skin, NULL, NULL)) != NULL)
errx(1, "success with bogus input on first try");
if ((num = sk_X509_INFO_num(skin)) != 0)
errx(1, "bogus input created %d X509_INFO objects", num);
if (BIO_reset(bp) != 1)
errx(1, "BIO_reset");
/* Populate stack and test again with bogus input. */
if ((info0 = X509_INFO_new()) == NULL)
err(1, "X509_INFO_new");
info0->references = 2; /* X509_INFO_up_ref(3) doesn't exist. */
if (sk_X509_INFO_push(skin, info0) != 1)
err(1, "sk_X509_INFO_push");
if ((skout = PEM_X509_INFO_read_bio(bp, skin, NULL, NULL)) != NULL)
errx(1, "success with bogus input on second try");
if ((num = sk_X509_INFO_num(skin)) != 1)
errx(1, "bogus input changed stack size from 1 to %d", num);
if (sk_X509_INFO_value(skin, 0) != info0)
errx(1, "bogus input changed stack content");
if (info0->references != 2) {
warnx("bogus input changed ref count from 2 to %d",
info0->references);
info0->references = 2;
errcount++;
}
BIO_free(bp);
/* Use a real certificate object. */
if ((bp = BIO_new_mem_buf(cert_pem, strlen(cert_pem))) == NULL)
err(1, "BIO_new_mem_buf(cert_pem)");
if ((skout = PEM_X509_INFO_read_bio(bp, skin, NULL, NULL)) == NULL) {
errdata = NULL;
errflags = 0;
while ((errcode = ERR_get_error_line_data(NULL, NULL,
&errdata, &errflags)) != 0)
if (errdata != NULL && (errflags & ERR_TXT_STRING))
warnx("%s --- %s",
ERR_error_string(errcode, NULL),
errdata);
else
warnx("%s", ERR_error_string(errcode, NULL));
err(1, "real input: parsing failed");
}
if (skout != skin)
errx(1, "real input did not return the same stack");
skout = NULL;
if ((num = sk_X509_INFO_num(skin)) != 2)
errx(1, "real input changed stack size from 1 to %d", num);
if (sk_X509_INFO_value(skin, 0) != info0)
errx(1, "real input changed stack content");
if (info0->references != 2)
errx(1, "real input changed ref count from 2 to %d",
info0->references);
info1 = sk_X509_INFO_pop(skin);
if (info1->x509 == NULL)
errx(1, "real input did not create a certificate");
X509_INFO_free(info1);
info1 = NULL;
BIO_free(bp);
/* Two real certificates followed by bogus input. */
if ((bp = BIO_new(BIO_s_mem())) == NULL)
err(1, "BIO_new");
if (BIO_puts(bp, cert_pem) != strlen(cert_pem))
err(1, "BIO_puts(cert_pem) first copy");
if (BIO_puts(bp, cert_pem) != strlen(cert_pem))
err(1, "BIO_puts(cert_pem) second copy");
if (BIO_puts(bp, bogus_pem) != strlen(bogus_pem))
err(1, "BIO_puts(bogus_pem)");
if ((skout = PEM_X509_INFO_read_bio(bp, skin, NULL, NULL)) != NULL)
errx(1, "success with real + bogus input");
if ((num = sk_X509_INFO_num(skin)) != 1) {
warnx("real + bogus input changed stack size from 1 to %d",
num);
while (sk_X509_INFO_num(skin) > 1)
sk_X509_INFO_pop(skin);
errcount++;
}
if (sk_X509_INFO_value(skin, 0) != info0)
errx(1, "real + bogus input changed stack content");
if (info0->references != 2) {
warnx("real + bogus input changed ref count from 2 to %d",
info0->references);
errcount++;
}
BIO_free(bp);
info0->references = 1;
X509_INFO_free(info0);
sk_X509_INFO_free(skin);
if (errcount > 0)
errx(1, "%d errors detected", errcount);
return 0;
}
|
