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 */
69 static int v3_check_critical(char **value);
70 static int v3_check_generic(char **value);
71 static X509_EXTENSION *do_ext_conf(LHASH *conf, X509V3_CTX *ctx, int ext_nid, int crit, char *value);
72 static X509_EXTENSION *v3_generic_extension(char *ext, char *value, int crit, int type);
74 static int v3_check_critical();
75 static int v3_check_generic();
76 static X509_EXTENSION *do_ext_conf();
77 static X509V3_EXTENSION *v3_generic_extension();
80 X509_EXTENSION *X509V3_EXT_conf(conf, ctx, name, value)
81 LHASH *conf; /* Config file */
83 char *name; /* Name */
84 char *value; /* Value */
88 crit = v3_check_critical(&value);
89 if((ext_type = v3_check_generic(&value)))
90 return v3_generic_extension(name, value, crit, ext_type);
91 return do_ext_conf(conf, ctx, OBJ_sn2nid(name), crit, value);
94 X509_EXTENSION *X509V3_EXT_conf_nid(conf, ctx, ext_nid, value)
95 LHASH *conf; /* Config file */
98 char *value; /* Value */
102 crit = v3_check_critical(&value);
103 if((ext_type = v3_check_generic(&value)))
104 return v3_generic_extension(OBJ_nid2sn(ext_nid),
105 value, crit, ext_type);
106 return do_ext_conf(conf, ctx, ext_nid, crit, value);
109 static X509_EXTENSION *do_ext_conf(conf, ctx, ext_nid, crit, value)
110 LHASH *conf; /* Config file */
114 char *value; /* Value */
116 X509_EXTENSION *ext = NULL;
117 X509V3_EXT_METHOD *method;
122 ASN1_OCTET_STRING *ext_oct;
123 if(ext_nid == NID_undef) return NULL;
124 if(!(method = X509V3_EXT_get_nid(ext_nid))) {
125 /* Add generic extension support here */
128 /* Now get internal extension representation based on type */
130 if(*value == '@') nval = CONF_get_section(conf, value + 1);
131 else nval = X509V3_parse_list(value);
133 X509V3err(X509V3_F_X509V3_EXT_CONF,X509V3_R_INVALID_EXTENSION_STRING);
134 ERR_add_error_data(4, "name=", OBJ_nid2sn(ext_nid), ",section=", value);
137 ext_struc = method->v2i(method, ctx, nval);
138 if(*value != '@') sk_pop_free(nval, X509V3_conf_free);
139 if(!ext_struc) return NULL;
140 } else if(method->s2i) {
141 if(!(ext_struc = method->s2i(method, ctx, value))) return NULL;
143 X509V3err(X509V3_F_X509V3_EXT_CONF,X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED);
144 ERR_add_error_data(2, "name=", OBJ_nid2sn(ext_nid));
148 /* We've now got the internal representation: convert to DER */
149 ext_len = method->i2d(ext_struc, NULL);
150 ext_der = Malloc(ext_len);
152 method->i2d(ext_struc, &p);
153 method->ext_free(ext_struc);
154 ext_oct = ASN1_OCTET_STRING_new();
155 ext_oct->data = ext_der;
156 ext_oct->length = ext_len;
158 ext = X509_EXTENSION_create_by_NID(NULL, ext_nid, crit, ext_oct);
159 ASN1_OCTET_STRING_free(ext_oct);
165 /* Check the extension string for critical flag */
166 static int v3_check_critical(value)
170 if((strlen(p) < 9) || strncmp(p, "critical,", 9)) return 0;
172 while(isspace(*p)) p++;
177 /* Check extension string for generic extension and return the type */
178 static int v3_check_generic(value)
182 if((strlen(p) < 4) || strncmp(p, "RAW:,", 4)) return 0;
184 while(isspace(*p)) p++;
189 /* Create a generic extension: for now just handle RAW type */
190 static X509_EXTENSION *v3_generic_extension(ext, value, crit, type)
196 unsigned char *ext_der=NULL;
198 ASN1_OBJECT *obj=NULL;
199 ASN1_OCTET_STRING *oct=NULL;
200 X509_EXTENSION *extension=NULL;
201 if(!(obj = OBJ_txt2obj(ext, 0))) {
202 X509V3err(X509V3_F_V3_GENERIC_EXTENSION,X509V3_R_EXTENSION_NAME_ERROR);
203 ERR_add_error_data(2, "name=", ext);
207 if(!(ext_der = string_to_hex(value, &ext_len))) {
208 X509V3err(X509V3_F_V3_GENERIC_EXTENSION,X509V3_R_EXTENSION_VALUE_ERROR);
209 ERR_add_error_data(2, "value=", value);
213 if(!(oct = ASN1_OCTET_STRING_new())) {
214 X509V3err(X509V3_F_V3_GENERIC_EXTENSION,ERR_R_MALLOC_FAILURE);
219 oct->length = ext_len;
222 extension = X509_EXTENSION_create_by_OBJ(NULL, obj, crit, oct);
225 ASN1_OBJECT_free(obj);
226 ASN1_OCTET_STRING_free(oct);
227 if(ext_der) Free(ext_der);
232 /* This is the main function: add a bunch of extensions based on a config file
236 int X509V3_EXT_add_conf(conf, ctx, section, cert)
246 if(!(nval = CONF_get_section(conf, section))) return 0;
247 for(i = 0; i < sk_num(nval); i++) {
248 val = (CONF_VALUE *)sk_value(nval, i);
249 if(!(ext = X509V3_EXT_conf(conf, ctx, val->name, val->value)))
251 if(cert) X509_add_ext(cert, ext, -1);
252 X509_EXTENSION_free(ext);
257 /* Just check syntax of config file as far as possible */
258 int X509V3_EXT_check_conf(conf, section)
262 static X509V3_CTX ctx_tst = { CTX_TEST, NULL, NULL, NULL, NULL };
263 return X509V3_EXT_add_conf(conf, &ctx_tst, section, NULL);