1 |
|
|
/* $OpenBSD: cert.c,v 1.33 2013/03/21 04:30:14 deraadt Exp $ */ |
2 |
|
|
/* $EOM: cert.c,v 1.18 2000/09/28 12:53:27 niklas Exp $ */ |
3 |
|
|
|
4 |
|
|
/* |
5 |
|
|
* Copyright (c) 1998, 1999 Niels Provos. All rights reserved. |
6 |
|
|
* Copyright (c) 1999, 2000 Niklas Hallqvist. All rights reserved. |
7 |
|
|
* |
8 |
|
|
* Redistribution and use in source and binary forms, with or without |
9 |
|
|
* modification, are permitted provided that the following conditions |
10 |
|
|
* are met: |
11 |
|
|
* 1. Redistributions of source code must retain the above copyright |
12 |
|
|
* notice, this list of conditions and the following disclaimer. |
13 |
|
|
* 2. Redistributions in binary form must reproduce the above copyright |
14 |
|
|
* notice, this list of conditions and the following disclaimer in the |
15 |
|
|
* documentation and/or other materials provided with the distribution. |
16 |
|
|
* |
17 |
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 |
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 |
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 |
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 |
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 |
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 |
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 |
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 |
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 |
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 |
|
|
*/ |
28 |
|
|
|
29 |
|
|
/* |
30 |
|
|
* This code was written under funding by Ericsson Radio Systems. |
31 |
|
|
*/ |
32 |
|
|
|
33 |
|
|
#include <sys/types.h> |
34 |
|
|
#include <stdio.h> |
35 |
|
|
#include <stdlib.h> |
36 |
|
|
#include <string.h> |
37 |
|
|
|
38 |
|
|
#include "isakmp_num.h" |
39 |
|
|
#include "log.h" |
40 |
|
|
#include "cert.h" |
41 |
|
|
#include "x509.h" |
42 |
|
|
|
43 |
|
|
#include "policy.h" |
44 |
|
|
|
45 |
|
|
struct cert_handler cert_handler[] = { |
46 |
|
|
{ |
47 |
|
|
ISAKMP_CERTENC_X509_SIG, |
48 |
|
|
x509_cert_init, x509_crl_init, x509_cert_get, x509_cert_validate, |
49 |
|
|
x509_cert_insert, x509_cert_free, |
50 |
|
|
x509_certreq_validate, x509_certreq_decode, x509_free_aca, |
51 |
|
|
x509_cert_obtain, x509_cert_get_key, x509_cert_get_subjects, |
52 |
|
|
x509_cert_dup, x509_serialize, x509_printable, x509_from_printable, |
53 |
|
|
x509_ca_count |
54 |
|
|
}, |
55 |
|
|
{ |
56 |
|
|
ISAKMP_CERTENC_KEYNOTE, |
57 |
|
|
keynote_cert_init, NULL, keynote_cert_get, keynote_cert_validate, |
58 |
|
|
keynote_cert_insert, keynote_cert_free, |
59 |
|
|
keynote_certreq_validate, keynote_certreq_decode, keynote_free_aca, |
60 |
|
|
keynote_cert_obtain, keynote_cert_get_key, keynote_cert_get_subjects, |
61 |
|
|
keynote_cert_dup, keynote_serialize, keynote_printable, |
62 |
|
|
keynote_from_printable, keynote_ca_count |
63 |
|
|
}, |
64 |
|
|
}; |
65 |
|
|
|
66 |
|
|
/* Initialize all certificate handlers */ |
67 |
|
|
int |
68 |
|
|
cert_init(void) |
69 |
|
|
{ |
70 |
|
|
size_t i; |
71 |
|
|
int err = 1; |
72 |
|
|
|
73 |
|
|
for (i = 0; i < sizeof cert_handler / sizeof cert_handler[0]; i++) |
74 |
|
|
if (cert_handler[i].cert_init && |
75 |
|
|
!(*cert_handler[i].cert_init)()) |
76 |
|
|
err = 0; |
77 |
|
|
|
78 |
|
|
return err; |
79 |
|
|
} |
80 |
|
|
|
81 |
|
|
int |
82 |
|
|
crl_init(void) |
83 |
|
|
{ |
84 |
|
|
size_t i; |
85 |
|
|
int err = 1; |
86 |
|
|
|
87 |
|
|
for (i = 0; i < sizeof cert_handler / sizeof cert_handler[0]; i++) |
88 |
|
|
if (cert_handler[i].crl_init && !(*cert_handler[i].crl_init)()) |
89 |
|
|
err = 0; |
90 |
|
|
|
91 |
|
|
return err; |
92 |
|
|
} |
93 |
|
|
|
94 |
|
|
struct cert_handler * |
95 |
|
|
cert_get(u_int16_t id) |
96 |
|
|
{ |
97 |
|
|
size_t i; |
98 |
|
|
|
99 |
|
|
for (i = 0; i < sizeof cert_handler / sizeof cert_handler[0]; i++) |
100 |
|
|
if (id == cert_handler[i].id) |
101 |
|
|
return &cert_handler[i]; |
102 |
|
|
return 0; |
103 |
|
|
} |
104 |
|
|
|
105 |
|
|
/* |
106 |
|
|
* Decode the certificate request of type TYPE contained in DATA extending |
107 |
|
|
* DATALEN bytes. Return a certreq_aca structure which the caller is |
108 |
|
|
* responsible for deallocating. |
109 |
|
|
*/ |
110 |
|
|
struct certreq_aca * |
111 |
|
|
certreq_decode(u_int16_t type, u_int8_t *data, u_int32_t datalen) |
112 |
|
|
{ |
113 |
|
|
struct cert_handler *handler; |
114 |
|
|
struct certreq_aca aca, *ret; |
115 |
|
|
|
116 |
|
|
handler = cert_get(type); |
117 |
|
|
if (!handler) |
118 |
|
|
return 0; |
119 |
|
|
|
120 |
|
|
aca.id = type; |
121 |
|
|
aca.handler = handler; |
122 |
|
|
aca.data = aca.raw_ca = NULL; |
123 |
|
|
|
124 |
|
|
if (datalen > 0) { |
125 |
|
|
int rc; |
126 |
|
|
|
127 |
|
|
rc = handler->certreq_decode(&aca.data, data, datalen); |
128 |
|
|
if (!rc) |
129 |
|
|
return 0; |
130 |
|
|
|
131 |
|
|
aca.raw_ca = malloc(datalen); |
132 |
|
|
if (aca.raw_ca == NULL) { |
133 |
|
|
log_error("certreq_decode: malloc (%lu) failed", |
134 |
|
|
(unsigned long)datalen); |
135 |
|
|
handler->free_aca(aca.data); |
136 |
|
|
return 0; |
137 |
|
|
} |
138 |
|
|
|
139 |
|
|
memcpy(aca.raw_ca, data, datalen); |
140 |
|
|
} |
141 |
|
|
aca.raw_ca_len = datalen; |
142 |
|
|
|
143 |
|
|
ret = malloc(sizeof aca); |
144 |
|
|
if (!ret) { |
145 |
|
|
log_error("certreq_decode: malloc (%lu) failed", |
146 |
|
|
(unsigned long)sizeof aca); |
147 |
|
|
free(aca.raw_ca); |
148 |
|
|
handler->free_aca(aca.data); |
149 |
|
|
return 0; |
150 |
|
|
} |
151 |
|
|
memcpy(ret, &aca, sizeof aca); |
152 |
|
|
return ret; |
153 |
|
|
} |
154 |
|
|
|
155 |
|
|
void |
156 |
|
|
cert_free_subjects(int n, u_int8_t **id, u_int32_t *len) |
157 |
|
|
{ |
158 |
|
|
int i; |
159 |
|
|
|
160 |
|
|
for (i = 0; i < n; i++) |
161 |
|
|
free(id[i]); |
162 |
|
|
free(id); |
163 |
|
|
free(len); |
164 |
|
|
} |