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
185
186
187
188
189
190
191
192
193
194
|
/*
* OpenVPN -- An application to securely tunnel IP networks
* over a single TCP/UDP port, with support for SSL/TLS-based
* session authentication and key exchange,
* packet encryption, packet authentication, and
* packet compression.
*
* Copyright (C) 2002-2021 OpenVPN Inc <sales@openvpn.net>
* Copyright (C) 2010-2021 Fox Crypto B.V. <openvpn@foxcrypto.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/**
* @file PKCS #11 OpenSSL backend
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#elif defined(_MSC_VER)
#include "config-msvc.h"
#endif
#include "syshead.h"
#if defined(ENABLE_PKCS11) && defined(ENABLE_CRYPTO_OPENSSL)
#include "errlevel.h"
#include "pkcs11_backend.h"
#include "ssl_verify.h"
#include <pkcs11-helper-1.0/pkcs11h-openssl.h>
int
pkcs11_init_tls_session(pkcs11h_certificate_t certificate,
struct tls_root_ctx *const ssl_ctx)
{
int ret = 1;
X509 *x509 = NULL;
EVP_PKEY *evp = NULL;
pkcs11h_openssl_session_t openssl_session = NULL;
if ((openssl_session = pkcs11h_openssl_createSession(certificate)) == NULL)
{
msg(M_WARN, "PKCS#11: Cannot initialize openssl session");
goto cleanup;
}
/*
* Will be released by openssl_session
*/
certificate = NULL;
if ((evp = pkcs11h_openssl_session_getEVP(openssl_session)) == NULL)
{
msg(M_WARN, "PKCS#11: Unable get evp object");
goto cleanup;
}
if ((x509 = pkcs11h_openssl_session_getX509(openssl_session)) == NULL)
{
msg(M_WARN, "PKCS#11: Unable get certificate object");
goto cleanup;
}
if (!SSL_CTX_use_PrivateKey(ssl_ctx->ctx, evp))
{
msg(M_WARN, "PKCS#11: Cannot set private key for openssl");
goto cleanup;
}
if (!SSL_CTX_use_certificate(ssl_ctx->ctx, x509))
{
msg(M_WARN, "PKCS#11: Cannot set certificate for openssl");
goto cleanup;
}
ret = 0;
cleanup:
/*
* Certificate freeing is usually handled by openssl_session.
* If something went wrong, creating the session we have to do it manually.
*/
if (certificate != NULL)
{
pkcs11h_certificate_freeCertificate(certificate);
certificate = NULL;
}
/*
* openssl objects have reference
* count, so release them
*/
if (x509 != NULL)
{
X509_free(x509);
x509 = NULL;
}
if (evp != NULL)
{
EVP_PKEY_free(evp);
evp = NULL;
}
if (openssl_session != NULL)
{
pkcs11h_openssl_freeSession(openssl_session);
openssl_session = NULL;
}
return ret;
}
char *
pkcs11_certificate_dn(pkcs11h_certificate_t certificate, struct gc_arena *gc)
{
X509 *x509 = NULL;
char *dn = NULL;
if ((x509 = pkcs11h_openssl_getX509(certificate)) == NULL)
{
msg(M_FATAL, "PKCS#11: Cannot get X509");
goto cleanup;
}
dn = x509_get_subject(x509, gc);
cleanup:
if (x509 != NULL)
{
X509_free(x509);
x509 = NULL;
}
return dn;
}
int
pkcs11_certificate_serial(pkcs11h_certificate_t certificate, char *serial,
size_t serial_len)
{
X509 *x509 = NULL;
BIO *bio = NULL;
int ret = 1;
int n;
if ((x509 = pkcs11h_openssl_getX509(certificate)) == NULL)
{
msg(M_FATAL, "PKCS#11: Cannot get X509");
goto cleanup;
}
if ((bio = BIO_new(BIO_s_mem())) == NULL)
{
msg(M_FATAL, "PKCS#11: Cannot create BIO");
goto cleanup;
}
i2a_ASN1_INTEGER(bio, X509_get_serialNumber(x509));
n = BIO_read(bio, serial, serial_len-1);
if (n<0)
{
serial[0] = '\x0';
}
else
{
serial[n] = 0;
}
ret = 0;
cleanup:
if (x509 != NULL)
{
X509_free(x509);
x509 = NULL;
}
return ret;
}
#endif /* defined(ENABLE_PKCS11) && defined(ENABLE_OPENSSL) */
|
