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175b0942 | 1 | /* v3_akey.c */ |
0f113f3e MC |
2 | /* |
3 | * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project | |
4 | * 1999. | |
175b0942 DSH |
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 | |
0f113f3e | 14 | * notice, this list of conditions and the following disclaimer. |
175b0942 DSH |
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> | |
e527ba09 | 61 | #include "cryptlib.h" |
ec577822 BM |
62 | #include <openssl/conf.h> |
63 | #include <openssl/asn1.h> | |
9d6b1ce6 | 64 | #include <openssl/asn1t.h> |
ec577822 | 65 | #include <openssl/x509v3.h> |
175b0942 | 66 | |
ba404b5e | 67 | static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, |
0f113f3e MC |
68 | AUTHORITY_KEYID *akeyid, |
69 | STACK_OF(CONF_VALUE) | |
70 | *extlist); | |
ba404b5e | 71 | static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, |
0f113f3e MC |
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 | }; | |
175b0942 | 85 | |
ba404b5e | 86 | static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, |
0f113f3e MC |
87 | AUTHORITY_KEYID *akeyid, |
88 | STACK_OF(CONF_VALUE) | |
89 | *extlist) | |
175b0942 | 90 | { |
0f113f3e MC |
91 | char *tmp; |
92 | if (akeyid->keyid) { | |
93 | tmp = hex_to_string(akeyid->keyid->data, akeyid->keyid->length); | |
94 | X509V3_add_value("keyid", tmp, &extlist); | |
95 | OPENSSL_free(tmp); | |
96 | } | |
97 | if (akeyid->issuer) | |
98 | extlist = i2v_GENERAL_NAMES(NULL, akeyid->issuer, extlist); | |
99 | if (akeyid->serial) { | |
100 | tmp = hex_to_string(akeyid->serial->data, akeyid->serial->length); | |
101 | X509V3_add_value("serial", tmp, &extlist); | |
102 | OPENSSL_free(tmp); | |
103 | } | |
104 | return extlist; | |
175b0942 DSH |
105 | } |
106 | ||
c80fd6b2 MC |
107 | /*- |
108 | * Currently two options: | |
0be9747b DSH |
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 | ||
6b691a5c | 116 | static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, |
0f113f3e MC |
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 | for (i = 0; i < sk_CONF_VALUE_num(values); i++) { | |
133 | cnf = sk_CONF_VALUE_value(values, i); | |
134 | if (!strcmp(cnf->name, "keyid")) { | |
135 | keyid = 1; | |
136 | if (cnf->value && !strcmp(cnf->value, "always")) | |
137 | keyid = 2; | |
138 | } else if (!strcmp(cnf->name, "issuer")) { | |
139 | issuer = 1; | |
140 | if (cnf->value && !strcmp(cnf->value, "always")) | |
141 | issuer = 2; | |
142 | } else { | |
143 | X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, X509V3_R_UNKNOWN_OPTION); | |
144 | ERR_add_error_data(2, "name=", cnf->name); | |
145 | return NULL; | |
146 | } | |
147 | } | |
148 | ||
149 | if (!ctx || !ctx->issuer_cert) { | |
150 | if (ctx && (ctx->flags == CTX_TEST)) | |
151 | return AUTHORITY_KEYID_new(); | |
152 | X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, | |
153 | X509V3_R_NO_ISSUER_CERTIFICATE); | |
154 | return NULL; | |
155 | } | |
156 | ||
157 | cert = ctx->issuer_cert; | |
158 | ||
159 | if (keyid) { | |
160 | i = X509_get_ext_by_NID(cert, NID_subject_key_identifier, -1); | |
161 | if ((i >= 0) && (ext = X509_get_ext(cert, i))) | |
162 | ikeyid = X509V3_EXT_d2i(ext); | |
163 | if (keyid == 2 && !ikeyid) { | |
164 | X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, | |
165 | X509V3_R_UNABLE_TO_GET_ISSUER_KEYID); | |
166 | return NULL; | |
167 | } | |
168 | } | |
169 | ||
170 | if ((issuer && !ikeyid) || (issuer == 2)) { | |
171 | isname = X509_NAME_dup(X509_get_issuer_name(cert)); | |
172 | serial = M_ASN1_INTEGER_dup(X509_get_serialNumber(cert)); | |
173 | if (!isname || !serial) { | |
174 | X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, | |
175 | X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS); | |
176 | goto err; | |
177 | } | |
178 | } | |
179 | ||
180 | if (!(akeyid = AUTHORITY_KEYID_new())) | |
181 | goto err; | |
182 | ||
183 | if (isname) { | |
184 | if (!(gens = sk_GENERAL_NAME_new_null()) | |
185 | || !(gen = GENERAL_NAME_new()) | |
186 | || !sk_GENERAL_NAME_push(gens, gen)) { | |
187 | X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, ERR_R_MALLOC_FAILURE); | |
188 | goto err; | |
189 | } | |
190 | gen->type = GEN_DIRNAME; | |
191 | gen->d.dirn = isname; | |
192 | } | |
193 | ||
194 | akeyid->issuer = gens; | |
195 | akeyid->serial = serial; | |
196 | akeyid->keyid = ikeyid; | |
197 | ||
198 | return akeyid; | |
8382ec5d RL |
199 | |
200 | err: | |
0f113f3e MC |
201 | X509_NAME_free(isname); |
202 | M_ASN1_INTEGER_free(serial); | |
203 | M_ASN1_OCTET_STRING_free(ikeyid); | |
204 | return NULL; | |
205 | } |