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175b0942 DSH |
1 | /* v3_akey.c */ |
2 | /* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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> | |
e527ba09 | 60 | #include "cryptlib.h" |
ec577822 BM |
61 | #include <openssl/conf.h> |
62 | #include <openssl/asn1.h> | |
9d6b1ce6 | 63 | #include <openssl/asn1t.h> |
ec577822 | 64 | #include <openssl/x509v3.h> |
175b0942 | 65 | |
ba404b5e DSH |
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); | |
175b0942 | 70 | |
560b79cb | 71 | const X509V3_EXT_METHOD v3_akey_id = |
8382ec5d RL |
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 | }; | |
175b0942 | 82 | |
ba404b5e DSH |
83 | static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, |
84 | AUTHORITY_KEYID *akeyid, STACK_OF(CONF_VALUE) *extlist) | |
175b0942 DSH |
85 | { |
86 | char *tmp; | |
87 | if(akeyid->keyid) { | |
88 | tmp = hex_to_string(akeyid->keyid->data, akeyid->keyid->length); | |
89 | X509V3_add_value("keyid", tmp, &extlist); | |
26a3a48d | 90 | OPENSSL_free(tmp); |
175b0942 DSH |
91 | } |
92 | if(akeyid->issuer) | |
93 | extlist = i2v_GENERAL_NAMES(NULL, akeyid->issuer, extlist); | |
94 | if(akeyid->serial) { | |
95 | tmp = hex_to_string(akeyid->serial->data, | |
96 | akeyid->serial->length); | |
97 | X509V3_add_value("serial", tmp, &extlist); | |
26a3a48d | 98 | OPENSSL_free(tmp); |
175b0942 DSH |
99 | } |
100 | return extlist; | |
101 | } | |
102 | ||
0be9747b DSH |
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 | ||
6b691a5c | 111 | static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, |
ba404b5e | 112 | X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values) |
8382ec5d RL |
113 | { |
114 | char keyid=0, issuer=0; | |
115 | int i; | |
116 | CONF_VALUE *cnf; | |
117 | ASN1_OCTET_STRING *ikeyid = NULL; | |
118 | X509_NAME *isname = NULL; | |
119 | GENERAL_NAMES * gens = NULL; | |
120 | GENERAL_NAME *gen = NULL; | |
121 | ASN1_INTEGER *serial = NULL; | |
122 | X509_EXTENSION *ext; | |
123 | X509 *cert; | |
124 | AUTHORITY_KEYID *akeyid; | |
125 | ||
126 | for(i = 0; i < sk_CONF_VALUE_num(values); i++) | |
127 | { | |
128 | cnf = sk_CONF_VALUE_value(values, i); | |
129 | if(!strcmp(cnf->name, "keyid")) | |
130 | { | |
131 | keyid = 1; | |
132 | if(cnf->value && !strcmp(cnf->value, "always")) | |
133 | keyid = 2; | |
134 | } | |
135 | else if(!strcmp(cnf->name, "issuer")) | |
136 | { | |
137 | issuer = 1; | |
138 | if(cnf->value && !strcmp(cnf->value, "always")) | |
139 | issuer = 2; | |
140 | } | |
141 | else | |
142 | { | |
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 | { | |
151 | if(ctx && (ctx->flags==CTX_TEST)) | |
152 | return AUTHORITY_KEYID_new(); | |
153 | X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_NO_ISSUER_CERTIFICATE); | |
0be9747b | 154 | return NULL; |
8382ec5d RL |
155 | } |
156 | ||
157 | cert = ctx->issuer_cert; | |
158 | ||
159 | if(keyid) | |
160 | { | |
161 | i = X509_get_ext_by_NID(cert, NID_subject_key_identifier, -1); | |
162 | if((i >= 0) && (ext = X509_get_ext(cert, i))) | |
163 | ikeyid = X509V3_EXT_d2i(ext); | |
164 | if(keyid==2 && !ikeyid) | |
165 | { | |
166 | X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_UNABLE_TO_GET_ISSUER_KEYID); | |
167 | return NULL; | |
168 | } | |
169 | } | |
170 | ||
171 | if((issuer && !ikeyid) || (issuer == 2)) | |
172 | { | |
173 | isname = X509_NAME_dup(X509_get_issuer_name(cert)); | |
174 | serial = M_ASN1_INTEGER_dup(X509_get_serialNumber(cert)); | |
175 | if(!isname || !serial) | |
176 | { | |
177 | X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS); | |
178 | goto err; | |
179 | } | |
180 | } | |
181 | ||
182 | if(!(akeyid = AUTHORITY_KEYID_new())) goto err; | |
183 | ||
184 | if(isname) | |
185 | { | |
186 | if(!(gens = sk_GENERAL_NAME_new_null()) | |
187 | || !(gen = GENERAL_NAME_new()) | |
188 | || !sk_GENERAL_NAME_push(gens, gen)) | |
189 | { | |
190 | X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,ERR_R_MALLOC_FAILURE); | |
191 | goto err; | |
192 | } | |
193 | gen->type = GEN_DIRNAME; | |
194 | gen->d.dirn = isname; | |
195 | } | |
196 | ||
197 | akeyid->issuer = gens; | |
198 | akeyid->serial = serial; | |
199 | akeyid->keyid = ikeyid; | |
200 | ||
201 | return akeyid; | |
202 | ||
203 | err: | |
204 | X509_NAME_free(isname); | |
205 | M_ASN1_INTEGER_free(serial); | |
206 | M_ASN1_OCTET_STRING_free(ikeyid); | |
0be9747b | 207 | return NULL; |
0be9747b | 208 | } |