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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 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 if(akeyid->keyid) { | |
88 tmp = hex_to_string(akeyid->keyid->data, akeyid->keyid->length); | |
89 X509V3_add_value("keyid", tmp, &extlist); | |
90 OPENSSL_free(tmp); | |
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); | |
98 OPENSSL_free(tmp); | |
99 } | |
100 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 static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method, | |
112 X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values) | |
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_CERTIF
ICATE); | |
154 return NULL; | |
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_T
O_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_T
O_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_FAIL
URE); | |
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); | |
207 return NULL; | |
208 } | |
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