Line data Source code
1 : /* v3_akey.c */
2 : /*
3 : * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
4 : * 1999.
5 : */
6 : /* ====================================================================
7 : * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
8 : *
9 : * Redistribution and use in source and binary forms, with or without
10 : * modification, are permitted provided that the following conditions
11 : * are met:
12 : *
13 : * 1. Redistributions of source code must retain the above copyright
14 : * notice, this list of conditions and the following disclaimer.
15 : *
16 : * 2. Redistributions in binary form must reproduce the above copyright
17 : * notice, this list of conditions and the following disclaimer in
18 : * the documentation and/or other materials provided with the
19 : * distribution.
20 : *
21 : * 3. All advertising materials mentioning features or use of this
22 : * software must display the following acknowledgment:
23 : * "This product includes software developed by the OpenSSL Project
24 : * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 : *
26 : * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 : * endorse or promote products derived from this software without
28 : * prior written permission. For written permission, please contact
29 : * licensing@OpenSSL.org.
30 : *
31 : * 5. Products derived from this software may not be called "OpenSSL"
32 : * nor may "OpenSSL" appear in their names without prior written
33 : * permission of the OpenSSL Project.
34 : *
35 : * 6. Redistributions of any form whatsoever must retain the following
36 : * acknowledgment:
37 : * "This product includes software developed by the OpenSSL Project
38 : * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 : *
40 : * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 : * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 : * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 : * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 : * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 : * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 : * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 : * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 : * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 : * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 : * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 : * OF THE POSSIBILITY OF SUCH DAMAGE.
52 : * ====================================================================
53 : *
54 : * This product includes cryptographic software written by Eric Young
55 : * (eay@cryptsoft.com). This product includes software written by Tim
56 : * Hudson (tjh@cryptsoft.com).
57 : *
58 : */
59 :
60 : #include <stdio.h>
61 : #include "cryptlib.h"
62 : #include <openssl/conf.h>
63 : #include <openssl/asn1.h>
64 : #include <openssl/asn1t.h>
65 : #include <openssl/x509v3.h>
66 :
67 : static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
68 : AUTHORITY_KEYID *akeyid,
69 : STACK_OF(CONF_VALUE)
70 : *extlist);
71 : static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
72 : X509V3_CTX *ctx,
73 : STACK_OF(CONF_VALUE) *values);
74 :
75 : const X509V3_EXT_METHOD v3_akey_id = {
76 : NID_authority_key_identifier,
77 : X509V3_EXT_MULTILINE, ASN1_ITEM_ref(AUTHORITY_KEYID),
78 : 0, 0, 0, 0,
79 : 0, 0,
80 : (X509V3_EXT_I2V) i2v_AUTHORITY_KEYID,
81 : (X509V3_EXT_V2I)v2i_AUTHORITY_KEYID,
82 : 0, 0,
83 : NULL
84 : };
85 :
86 0 : static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
87 : AUTHORITY_KEYID *akeyid,
88 : STACK_OF(CONF_VALUE)
89 : *extlist)
90 : {
91 : char *tmp;
92 0 : if (akeyid->keyid) {
93 0 : tmp = hex_to_string(akeyid->keyid->data, akeyid->keyid->length);
94 0 : X509V3_add_value("keyid", tmp, &extlist);
95 0 : OPENSSL_free(tmp);
96 : }
97 0 : if (akeyid->issuer)
98 0 : extlist = i2v_GENERAL_NAMES(NULL, akeyid->issuer, extlist);
99 0 : if (akeyid->serial) {
100 0 : tmp = hex_to_string(akeyid->serial->data, akeyid->serial->length);
101 0 : X509V3_add_value("serial", tmp, &extlist);
102 0 : OPENSSL_free(tmp);
103 : }
104 0 : return extlist;
105 : }
106 :
107 : /*-
108 : * Currently two options:
109 : * keyid: use the issuers subject keyid, the value 'always' means its is
110 : * an error if the issuer certificate doesn't have a key id.
111 : * issuer: use the issuers cert issuer and serial number. The default is
112 : * to only use this if keyid is not present. With the option 'always'
113 : * this is always included.
114 : */
115 :
116 0 : static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
117 : X509V3_CTX *ctx,
118 : STACK_OF(CONF_VALUE) *values)
119 : {
120 : char keyid = 0, issuer = 0;
121 : int i;
122 : CONF_VALUE *cnf;
123 : ASN1_OCTET_STRING *ikeyid = NULL;
124 : X509_NAME *isname = NULL;
125 : GENERAL_NAMES *gens = NULL;
126 : GENERAL_NAME *gen = NULL;
127 : ASN1_INTEGER *serial = NULL;
128 : X509_EXTENSION *ext;
129 : X509 *cert;
130 : AUTHORITY_KEYID *akeyid;
131 :
132 0 : for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
133 0 : cnf = sk_CONF_VALUE_value(values, i);
134 0 : if (!strcmp(cnf->name, "keyid")) {
135 : keyid = 1;
136 0 : if (cnf->value && !strcmp(cnf->value, "always"))
137 : keyid = 2;
138 0 : } else if (!strcmp(cnf->name, "issuer")) {
139 : issuer = 1;
140 0 : if (cnf->value && !strcmp(cnf->value, "always"))
141 : issuer = 2;
142 : } else {
143 0 : X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, X509V3_R_UNKNOWN_OPTION);
144 0 : ERR_add_error_data(2, "name=", cnf->name);
145 0 : return NULL;
146 : }
147 : }
148 :
149 0 : if (!ctx || !ctx->issuer_cert) {
150 0 : if (ctx && (ctx->flags == CTX_TEST))
151 0 : return AUTHORITY_KEYID_new();
152 0 : X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,
153 : X509V3_R_NO_ISSUER_CERTIFICATE);
154 0 : return NULL;
155 : }
156 :
157 : cert = ctx->issuer_cert;
158 :
159 0 : if (keyid) {
160 0 : i = X509_get_ext_by_NID(cert, NID_subject_key_identifier, -1);
161 0 : if ((i >= 0) && (ext = X509_get_ext(cert, i)))
162 0 : ikeyid = X509V3_EXT_d2i(ext);
163 0 : if (keyid == 2 && !ikeyid) {
164 0 : X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,
165 : X509V3_R_UNABLE_TO_GET_ISSUER_KEYID);
166 0 : return NULL;
167 : }
168 : }
169 :
170 0 : if ((issuer && !ikeyid) || (issuer == 2)) {
171 0 : isname = X509_NAME_dup(X509_get_issuer_name(cert));
172 0 : serial = M_ASN1_INTEGER_dup(X509_get_serialNumber(cert));
173 0 : if (!isname || !serial) {
174 0 : X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,
175 : X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS);
176 0 : goto err;
177 : }
178 : }
179 :
180 0 : if (!(akeyid = AUTHORITY_KEYID_new()))
181 : goto err;
182 :
183 0 : if (isname) {
184 0 : if (!(gens = sk_GENERAL_NAME_new_null())
185 0 : || !(gen = GENERAL_NAME_new())
186 0 : || !sk_GENERAL_NAME_push(gens, gen)) {
187 0 : X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, ERR_R_MALLOC_FAILURE);
188 0 : goto err;
189 : }
190 0 : gen->type = GEN_DIRNAME;
191 0 : gen->d.dirn = isname;
192 : }
193 :
194 0 : akeyid->issuer = gens;
195 0 : akeyid->serial = serial;
196 0 : akeyid->keyid = ikeyid;
197 :
198 0 : return akeyid;
199 :
200 : err:
201 0 : X509_NAME_free(isname);
202 0 : M_ASN1_INTEGER_free(serial);
203 0 : M_ASN1_OCTET_STRING_free(ikeyid);
204 0 : return NULL;
205 : }
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