]> git.ipfire.org Git - thirdparty/openssl.git/blob - crypto/x509v3/v3_conf.c
Various fixes so Win32 compile may work. Convert GeneralNames to use safe stack.
[thirdparty/openssl.git] / crypto / x509v3 / v3_conf.c
1 /* v3_conf.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 /* extension creation utilities */
59
60
61
62 #include <stdio.h>
63 #include <ctype.h>
64 #include "cryptlib.h"
65 #include "conf.h"
66 #include "x509.h"
67 #include "x509v3.h"
68
69 #ifndef NOPROTO
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);
76 #else
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();
83 #endif
84
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,
89 char *value)
90 {
91 int crit;
92 int ext_type;
93 X509_EXTENSION *ret;
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);
98 if(!ret) {
99 X509V3err(X509V3_F_X509V3_EXT_CONF,X509V3_R_ERROR_IN_EXTENSION);
100 ERR_add_error_data(4,"name=", name, ", value=", value);
101 }
102 return ret;
103 }
104
105 /* LHASH *conf: Config file */
106 /* char *value: Value */
107 X509_EXTENSION *X509V3_EXT_conf_nid(LHASH *conf, X509V3_CTX *ctx, int ext_nid,
108 char *value)
109 {
110 int crit;
111 int ext_type;
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);
117 }
118
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)
123 {
124 X509_EXTENSION *ext = NULL;
125 X509V3_EXT_METHOD *method;
126 STACK *nval;
127 char *ext_struc;
128 char *ext_der, *p;
129 int ext_len;
130 ASN1_OCTET_STRING *ext_oct;
131 if(ext_nid == NID_undef) {
132 X509V3err(X509V3_F_DO_EXT_CONF,X509V3_R_UNKNOWN_EXTENSION_NAME);
133 return NULL;
134 }
135 if(!(method = X509V3_EXT_get_nid(ext_nid))) {
136 X509V3err(X509V3_F_DO_EXT_CONF,X509V3_R_UNKNOWN_EXTENSION);
137 return NULL;
138 }
139 /* Now get internal extension representation based on type */
140 if(method->v2i) {
141 if(*value == '@') nval = CONF_get_section(conf, value + 1);
142 else nval = X509V3_parse_list(value);
143 if(!nval) {
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);
146 return NULL;
147 }
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) {
154 if(!ctx->db) {
155 X509V3err(X509V3_F_X509V3_EXT_CONF,X509V3_R_NO_CONFIG_DATABASE);
156 return NULL;
157 }
158 if(!(ext_struc = method->r2i(method, ctx, value))) return NULL;
159 } else {
160 X509V3err(X509V3_F_X509V3_EXT_CONF,X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED);
161 ERR_add_error_data(2, "name=", OBJ_nid2sn(ext_nid));
162 return NULL;
163 }
164
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);
168 p = ext_der;
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;
174
175 ext = X509_EXTENSION_create_by_NID(NULL, ext_nid, crit, ext_oct);
176 ASN1_OCTET_STRING_free(ext_oct);
177
178 return ext;
179
180 }
181
182 /* Check the extension string for critical flag */
183 static int v3_check_critical(char **value)
184 {
185 char *p = *value;
186 if((strlen(p) < 9) || strncmp(p, "critical,", 9)) return 0;
187 p+=9;
188 while(isspace(*p)) p++;
189 *value = p;
190 return 1;
191 }
192
193 /* Check extension string for generic extension and return the type */
194 static int v3_check_generic(char **value)
195 {
196 char *p = *value;
197 if((strlen(p) < 4) || strncmp(p, "RAW:,", 4)) return 0;
198 p+=4;
199 while(isspace(*p)) p++;
200 *value = p;
201 return 1;
202 }
203
204 /* Create a generic extension: for now just handle RAW type */
205 static X509_EXTENSION *v3_generic_extension(const char *ext, char *value,
206 int crit, int type)
207 {
208 unsigned char *ext_der=NULL;
209 long ext_len;
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);
216 goto err;
217 }
218
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);
222 goto err;
223 }
224
225 if(!(oct = ASN1_OCTET_STRING_new())) {
226 X509V3err(X509V3_F_V3_GENERIC_EXTENSION,ERR_R_MALLOC_FAILURE);
227 goto err;
228 }
229
230 oct->data = ext_der;
231 oct->length = ext_len;
232 ext_der = NULL;
233
234 extension = X509_EXTENSION_create_by_OBJ(NULL, obj, crit, oct);
235
236 err:
237 ASN1_OBJECT_free(obj);
238 ASN1_OCTET_STRING_free(oct);
239 if(ext_der) Free(ext_der);
240 return extension;
241 }
242
243
244 /* This is the main function: add a bunch of extensions based on a config file
245 * section
246 */
247
248 int X509V3_EXT_add_conf(LHASH *conf, X509V3_CTX *ctx, char *section,
249 X509 *cert)
250 {
251 X509_EXTENSION *ext;
252 STACK *nval;
253 CONF_VALUE *val;
254 int i;
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)))
259 return 0;
260 if(cert) X509_add_ext(cert, ext, -1);
261 X509_EXTENSION_free(ext);
262 }
263 return 1;
264 }
265
266 /* Same as above but for a CRL */
267
268 int X509V3_EXT_CRL_add_conf(LHASH *conf, X509V3_CTX *ctx, char *section,
269 X509_CRL *crl)
270 {
271 X509_EXTENSION *ext;
272 STACK *nval;
273 CONF_VALUE *val;
274 int i;
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)))
279 return 0;
280 if(crl) X509_CRL_add_ext(crl, ext, -1);
281 X509_EXTENSION_free(ext);
282 }
283 return 1;
284 }
285
286 /* Config database functions */
287
288 char * X509V3_get_string(X509V3_CTX *ctx, char *name, char *section)
289 {
290 if(ctx->db_meth->get_string)
291 return ctx->db_meth->get_string(ctx->db, name, section);
292 return NULL;
293 }
294
295 STACK * X509V3_get_section(X509V3_CTX *ctx, char *section)
296 {
297 if(ctx->db_meth->get_section)
298 return ctx->db_meth->get_section(ctx->db, section);
299 return NULL;
300 }
301
302 void X509V3_string_free(X509V3_CTX *ctx, char *str)
303 {
304 if(!str) return;
305 if(ctx->db_meth->free_string)
306 ctx->db_meth->free_string(ctx->db, str);
307 }
308
309 void X509V3_section_free(X509V3_CTX *ctx, STACK *section)
310 {
311 if(!section) return;
312 if(ctx->db_meth->free_section)
313 ctx->db_meth->free_section(ctx->db, section);
314 }
315
316 static char *conf_lhash_get_string(void *db, char *section, char *value)
317 {
318 return CONF_get_string(db, section, value);
319 }
320
321 static STACK *conf_lhash_get_section(void *db, char *section)
322 {
323 return CONF_get_section(db, section);
324 }
325
326 static X509V3_CONF_METHOD conf_lhash_method = {
327 conf_lhash_get_string,
328 conf_lhash_get_section,
329 NULL,
330 NULL
331 };
332
333 void X509V3_set_conf_lhash(X509V3_CTX *ctx, LHASH *lhash)
334 {
335 ctx->db_meth = &conf_lhash_method;
336 ctx->db = lhash;
337 }
338
339 void X509V3_set_ctx(X509V3_CTX *ctx, X509 *issuer, X509 *subj, X509_REQ *req,
340 X509_CRL *crl, int flags)
341 {
342 ctx->issuer_cert = issuer;
343 ctx->subject_cert = subj;
344 ctx->crl = crl;
345 ctx->subject_req = req;
346 ctx->flags = flags;
347 }