Branch data Line data Source code
1 : : /* v3_akey.c */
2 : : /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 : : * project 1999.
4 : : */
5 : : /* ====================================================================
6 : : * Copyright (c) 1999 The OpenSSL Project. 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 : : *
12 : : * 1. Redistributions of source code must retain the above copyright
13 : : * notice, this list of conditions and the following disclaimer.
14 : : *
15 : : * 2. Redistributions in binary form must reproduce the above copyright
16 : : * notice, this list of conditions and the following disclaimer in
17 : : * the documentation and/or other materials provided with the
18 : : * distribution.
19 : : *
20 : : * 3. All advertising materials mentioning features or use of this
21 : : * software must display the following acknowledgment:
22 : : * "This product includes software developed by the OpenSSL Project
23 : : * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 : : *
25 : : * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 : : * endorse or promote products derived from this software without
27 : : * prior written permission. For written permission, please contact
28 : : * licensing@OpenSSL.org.
29 : : *
30 : : * 5. Products derived from this software may not be called "OpenSSL"
31 : : * nor may "OpenSSL" appear in their names without prior written
32 : : * permission of the OpenSSL Project.
33 : : *
34 : : * 6. Redistributions of any form whatsoever must retain the following
35 : : * acknowledgment:
36 : : * "This product includes software developed by the OpenSSL Project
37 : : * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 : : *
39 : : * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 : : * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 : : * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 : : * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 : : * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 : : * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 : : * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 : : * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 : : * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 : : * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 : : * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 : : * OF THE POSSIBILITY OF SUCH DAMAGE.
51 : : * ====================================================================
52 : : *
53 : : * This product includes cryptographic software written by Eric Young
54 : : * (eay@cryptsoft.com). This product includes software written by Tim
55 : : * Hudson (tjh@cryptsoft.com).
56 : : *
57 : : */
58 : :
59 : : #include <stdio.h>
60 : : #include "cryptlib.h"
61 : : #include <openssl/conf.h>
62 : : #include <openssl/asn1.h>
63 : : #include <openssl/asn1t.h>
64 : : #include <openssl/x509v3.h>
65 : :
66 : : static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
67 : : AUTHORITY_KEYID *akeyid, STACK_OF(CONF_VALUE) *extlist);
68 : : static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
69 : : X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values);
70 : :
71 : : const X509V3_EXT_METHOD v3_akey_id =
72 : : {
73 : : NID_authority_key_identifier,
74 : : X509V3_EXT_MULTILINE, ASN1_ITEM_ref(AUTHORITY_KEYID),
75 : : 0,0,0,0,
76 : : 0,0,
77 : : (X509V3_EXT_I2V)i2v_AUTHORITY_KEYID,
78 : : (X509V3_EXT_V2I)v2i_AUTHORITY_KEYID,
79 : : 0,0,
80 : : NULL
81 : : };
82 : :
83 : 39 : static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
84 : : AUTHORITY_KEYID *akeyid, STACK_OF(CONF_VALUE) *extlist)
85 : : {
86 : : char *tmp;
87 [ + - ]: 39 : if(akeyid->keyid) {
88 : 39 : tmp = hex_to_string(akeyid->keyid->data, akeyid->keyid->length);
89 : 39 : X509V3_add_value("keyid", tmp, &extlist);
90 : 39 : OPENSSL_free(tmp);
91 : : }
92 [ + + ]: 39 : if(akeyid->issuer)
93 : 36 : extlist = i2v_GENERAL_NAMES(NULL, akeyid->issuer, extlist);
94 [ + + ]: 39 : if(akeyid->serial) {
95 : 36 : tmp = hex_to_string(akeyid->serial->data,
96 : 36 : akeyid->serial->length);
97 : 36 : X509V3_add_value("serial", tmp, &extlist);
98 : 36 : OPENSSL_free(tmp);
99 : : }
100 : 39 : return extlist;
101 : : }
102 : :
103 : : /* Currently two options:
104 : : * keyid: use the issuers subject keyid, the value 'always' means its is
105 : : * an error if the issuer certificate doesn't have a key id.
106 : : * issuer: use the issuers cert issuer and serial number. The default is
107 : : * to only use this if keyid is not present. With the option 'always'
108 : : * this is always included.
109 : : */
110 : :
111 : 36 : static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
112 : : X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values)
113 : : {
114 : 36 : char keyid=0, issuer=0;
115 : : int i;
116 : : CONF_VALUE *cnf;
117 : 36 : ASN1_OCTET_STRING *ikeyid = NULL;
118 : 36 : X509_NAME *isname = NULL;
119 : 36 : GENERAL_NAMES * gens = NULL;
120 : 36 : GENERAL_NAME *gen = NULL;
121 : 36 : ASN1_INTEGER *serial = NULL;
122 : : X509_EXTENSION *ext;
123 : : X509 *cert;
124 : : AUTHORITY_KEYID *akeyid;
125 : :
126 [ + + ]: 108 : for(i = 0; i < sk_CONF_VALUE_num(values); i++)
127 : : {
128 : 72 : cnf = sk_CONF_VALUE_value(values, i);
129 [ + + ]: 72 : if(!strcmp(cnf->name, "keyid"))
130 : : {
131 : 36 : keyid = 1;
132 [ + + ][ + - ]: 36 : if(cnf->value && !strcmp(cnf->value, "always"))
133 : 24 : keyid = 2;
134 : : }
135 [ + - ]: 36 : else if(!strcmp(cnf->name, "issuer"))
136 : : {
137 : 36 : issuer = 1;
138 [ + + ][ + - ]: 36 : if(cnf->value && !strcmp(cnf->value, "always"))
139 : 18 : issuer = 2;
140 : : }
141 : : else
142 : : {
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 [ + - ][ + + ]: 36 : if(!ctx || !ctx->issuer_cert)
150 : : {
151 [ + - ][ + - ]: 27 : if(ctx && (ctx->flags==CTX_TEST))
152 : 27 : return AUTHORITY_KEYID_new();
153 : 0 : X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_NO_ISSUER_CERTIFICATE);
154 : 0 : return NULL;
155 : : }
156 : :
157 : 9 : cert = ctx->issuer_cert;
158 : :
159 [ + - ]: 9 : if(keyid)
160 : : {
161 : 9 : i = X509_get_ext_by_NID(cert, NID_subject_key_identifier, -1);
162 [ + - ][ + - ]: 9 : if((i >= 0) && (ext = X509_get_ext(cert, i)))
163 : 9 : ikeyid = X509V3_EXT_d2i(ext);
164 [ - + ]: 9 : if(keyid==2 && !ikeyid)
165 : : {
166 : 0 : X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_UNABLE_TO_GET_ISSUER_KEYID);
167 : 0 : return NULL;
168 : : }
169 : : }
170 : :
171 [ + - ][ + + ]: 9 : if((issuer && !ikeyid) || (issuer == 2))
172 : : {
173 : 8 : isname = X509_NAME_dup(X509_get_issuer_name(cert));
174 : 8 : serial = M_ASN1_INTEGER_dup(X509_get_serialNumber(cert));
175 [ - + ]: 8 : if(!isname || !serial)
176 : : {
177 : 0 : X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS);
178 : 0 : goto err;
179 : : }
180 : : }
181 : :
182 [ + - ]: 9 : if(!(akeyid = AUTHORITY_KEYID_new())) goto err;
183 : :
184 [ + + ]: 9 : if(isname)
185 : : {
186 [ + - ]: 8 : if(!(gens = sk_GENERAL_NAME_new_null())
187 [ + - ]: 8 : || !(gen = GENERAL_NAME_new())
188 [ - + ]: 8 : || !sk_GENERAL_NAME_push(gens, gen))
189 : : {
190 : 0 : X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,ERR_R_MALLOC_FAILURE);
191 : 0 : goto err;
192 : : }
193 : 8 : gen->type = GEN_DIRNAME;
194 : 8 : gen->d.dirn = isname;
195 : : }
196 : :
197 : 9 : akeyid->issuer = gens;
198 : 9 : akeyid->serial = serial;
199 : 9 : akeyid->keyid = ikeyid;
200 : :
201 : 9 : return akeyid;
202 : :
203 : : err:
204 : 0 : X509_NAME_free(isname);
205 : 0 : M_ASN1_INTEGER_free(serial);
206 : 0 : M_ASN1_OCTET_STRING_free(ikeyid);
207 : 0 : return NULL;
208 : : }
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