2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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 * ====================================================================
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).
58 /* extension creation utilities */
70 static int v3_check_critical(char **value
);
71 static int v3_check_generic(char **value
);
72 static X509_EXTENSION
*do_ext_conf(LHASH
*conf
, X509V3_CTX
*ctx
, int ext_nid
, int crit
, char *value
);
73 static X509_EXTENSION
*v3_generic_extension(const char *ext
, char *value
, int crit
, int type
);
74 static char *conf_lhash_get_string(void *db
, char *section
, char *value
);
75 static STACK
*conf_lhash_get_section(void *db
, char *section
);
77 static int v3_check_critical();
78 static int v3_check_generic();
79 static X509_EXTENSION
*do_ext_conf();
80 static X509V3_EXTENSION
*v3_generic_extension();
81 static char *conf_lhash_get_string();
82 static STACK
*conf_lhash_get_section();
85 /* LHASH *conf: Config file */
86 /* char *name: Name */
87 /* char *value: Value */
88 X509_EXTENSION
*X509V3_EXT_conf(LHASH
*conf
, X509V3_CTX
*ctx
, char *name
,
94 crit
= v3_check_critical(&value
);
95 if((ext_type
= v3_check_generic(&value
)))
96 return v3_generic_extension(name
, value
, crit
, ext_type
);
97 ret
= do_ext_conf(conf
, ctx
, OBJ_sn2nid(name
), crit
, value
);
99 X509V3err(X509V3_F_X509V3_EXT_CONF
,X509V3_R_ERROR_IN_EXTENSION
);
100 ERR_add_error_data(4,"name=", name
, ", value=", value
);
105 /* LHASH *conf: Config file */
106 /* char *value: Value */
107 X509_EXTENSION
*X509V3_EXT_conf_nid(LHASH
*conf
, X509V3_CTX
*ctx
, int ext_nid
,
112 crit
= v3_check_critical(&value
);
113 if((ext_type
= v3_check_generic(&value
)))
114 return v3_generic_extension(OBJ_nid2sn(ext_nid
),
115 value
, crit
, ext_type
);
116 return do_ext_conf(conf
, ctx
, ext_nid
, crit
, value
);
119 /* LHASH *conf: Config file */
120 /* char *value: Value */
121 static X509_EXTENSION
*do_ext_conf(LHASH
*conf
, X509V3_CTX
*ctx
, int ext_nid
,
122 int crit
, char *value
)
124 X509_EXTENSION
*ext
= NULL
;
125 X509V3_EXT_METHOD
*method
;
130 ASN1_OCTET_STRING
*ext_oct
;
131 if(ext_nid
== NID_undef
) {
132 X509V3err(X509V3_F_DO_EXT_CONF
,X509V3_R_UNKNOWN_EXTENSION_NAME
);
135 if(!(method
= X509V3_EXT_get_nid(ext_nid
))) {
136 X509V3err(X509V3_F_DO_EXT_CONF
,X509V3_R_UNKNOWN_EXTENSION
);
139 /* Now get internal extension representation based on type */
141 if(*value
== '@') nval
= CONF_get_section(conf
, value
+ 1);
142 else nval
= X509V3_parse_list(value
);
144 X509V3err(X509V3_F_X509V3_EXT_CONF
,X509V3_R_INVALID_EXTENSION_STRING
);
145 ERR_add_error_data(4, "name=", OBJ_nid2sn(ext_nid
), ",section=", value
);
148 ext_struc
= method
->v2i(method
, ctx
, nval
);
149 if(*value
!= '@') sk_pop_free(nval
, X509V3_conf_free
);
150 if(!ext_struc
) return NULL
;
151 } else if(method
->s2i
) {
152 if(!(ext_struc
= method
->s2i(method
, ctx
, value
))) return NULL
;
153 } else if(method
->r2i
) {
155 X509V3err(X509V3_F_X509V3_EXT_CONF
,X509V3_R_NO_CONFIG_DATABASE
);
158 if(!(ext_struc
= method
->r2i(method
, ctx
, value
))) return NULL
;
160 X509V3err(X509V3_F_X509V3_EXT_CONF
,X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED
);
161 ERR_add_error_data(2, "name=", OBJ_nid2sn(ext_nid
));
165 /* We've now got the internal representation: convert to DER */
166 ext_len
= method
->i2d(ext_struc
, NULL
);
167 ext_der
= Malloc(ext_len
);
169 method
->i2d(ext_struc
, &p
);
170 method
->ext_free(ext_struc
);
171 ext_oct
= ASN1_OCTET_STRING_new();
172 ext_oct
->data
= ext_der
;
173 ext_oct
->length
= ext_len
;
175 ext
= X509_EXTENSION_create_by_NID(NULL
, ext_nid
, crit
, ext_oct
);
176 ASN1_OCTET_STRING_free(ext_oct
);
182 /* Check the extension string for critical flag */
183 static int v3_check_critical(char **value
)
186 if((strlen(p
) < 9) || strncmp(p
, "critical,", 9)) return 0;
188 while(isspace(*p
)) p
++;
193 /* Check extension string for generic extension and return the type */
194 static int v3_check_generic(char **value
)
197 if((strlen(p
) < 4) || strncmp(p
, "RAW:,", 4)) return 0;
199 while(isspace(*p
)) p
++;
204 /* Create a generic extension: for now just handle RAW type */
205 static X509_EXTENSION
*v3_generic_extension(const char *ext
, char *value
,
208 unsigned char *ext_der
=NULL
;
210 ASN1_OBJECT
*obj
=NULL
;
211 ASN1_OCTET_STRING
*oct
=NULL
;
212 X509_EXTENSION
*extension
=NULL
;
213 if(!(obj
= OBJ_txt2obj(ext
, 0))) {
214 X509V3err(X509V3_F_V3_GENERIC_EXTENSION
,X509V3_R_EXTENSION_NAME_ERROR
);
215 ERR_add_error_data(2, "name=", ext
);
219 if(!(ext_der
= string_to_hex(value
, &ext_len
))) {
220 X509V3err(X509V3_F_V3_GENERIC_EXTENSION
,X509V3_R_EXTENSION_VALUE_ERROR
);
221 ERR_add_error_data(2, "value=", value
);
225 if(!(oct
= ASN1_OCTET_STRING_new())) {
226 X509V3err(X509V3_F_V3_GENERIC_EXTENSION
,ERR_R_MALLOC_FAILURE
);
231 oct
->length
= ext_len
;
234 extension
= X509_EXTENSION_create_by_OBJ(NULL
, obj
, crit
, oct
);
237 ASN1_OBJECT_free(obj
);
238 ASN1_OCTET_STRING_free(oct
);
239 if(ext_der
) Free(ext_der
);
244 /* This is the main function: add a bunch of extensions based on a config file
248 int X509V3_EXT_add_conf(LHASH
*conf
, X509V3_CTX
*ctx
, char *section
,
255 if(!(nval
= CONF_get_section(conf
, section
))) return 0;
256 for(i
= 0; i
< sk_num(nval
); i
++) {
257 val
= (CONF_VALUE
*)sk_value(nval
, i
);
258 if(!(ext
= X509V3_EXT_conf(conf
, ctx
, val
->name
, val
->value
)))
260 if(cert
) X509_add_ext(cert
, ext
, -1);
261 X509_EXTENSION_free(ext
);
266 /* Same as above but for a CRL */
268 int X509V3_EXT_CRL_add_conf(LHASH
*conf
, X509V3_CTX
*ctx
, char *section
,
275 if(!(nval
= CONF_get_section(conf
, section
))) return 0;
276 for(i
= 0; i
< sk_num(nval
); i
++) {
277 val
= (CONF_VALUE
*)sk_value(nval
, i
);
278 if(!(ext
= X509V3_EXT_conf(conf
, ctx
, val
->name
, val
->value
)))
280 if(crl
) X509_CRL_add_ext(crl
, ext
, -1);
281 X509_EXTENSION_free(ext
);
286 /* Config database functions */
288 char * X509V3_get_string(X509V3_CTX
*ctx
, char *name
, char *section
)
290 if(ctx
->db_meth
->get_string
)
291 return ctx
->db_meth
->get_string(ctx
->db
, name
, section
);
295 STACK
* X509V3_get_section(X509V3_CTX
*ctx
, char *section
)
297 if(ctx
->db_meth
->get_section
)
298 return ctx
->db_meth
->get_section(ctx
->db
, section
);
302 void X509V3_string_free(X509V3_CTX
*ctx
, char *str
)
305 if(ctx
->db_meth
->free_string
)
306 ctx
->db_meth
->free_string(ctx
->db
, str
);
309 void X509V3_section_free(X509V3_CTX
*ctx
, STACK
*section
)
312 if(ctx
->db_meth
->free_section
)
313 ctx
->db_meth
->free_section(ctx
->db
, section
);
316 static char *conf_lhash_get_string(void *db
, char *section
, char *value
)
318 return CONF_get_string(db
, section
, value
);
321 static STACK
*conf_lhash_get_section(void *db
, char *section
)
323 return CONF_get_section(db
, section
);
326 static X509V3_CONF_METHOD conf_lhash_method
= {
327 conf_lhash_get_string
,
328 conf_lhash_get_section
,
333 void X509V3_set_conf_lhash(X509V3_CTX
*ctx
, LHASH
*lhash
)
335 ctx
->db_meth
= &conf_lhash_method
;
339 void X509V3_set_ctx(X509V3_CTX
*ctx
, X509
*issuer
, X509
*subj
, X509_REQ
*req
,
340 X509_CRL
*crl
, int flags
)
342 ctx
->issuer_cert
= issuer
;
343 ctx
->subject_cert
= subj
;
345 ctx
->subject_req
= req
;