1 /* $OpenBSD: x509name.c,v 1.27 2021/11/01 20:53:08 tb Exp $ */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59 #include <stdio.h>
60 #include <string.h>
61
62 #include <openssl/asn1.h>
63 #include <openssl/err.h>
64 #include <openssl/evp.h>
65 #include <openssl/objects.h>
66 #include <openssl/stack.h>
67 #include <openssl/x509.h>
68
69 #include "x509_lcl.h"
70
71 int
X509_NAME_get_text_by_NID(X509_NAME * name,int nid,char * buf,int len)72 X509_NAME_get_text_by_NID(X509_NAME *name, int nid, char *buf, int len)
73 {
74 ASN1_OBJECT *obj;
75
76 obj = OBJ_nid2obj(nid);
77 if (obj == NULL)
78 return (-1);
79 return (X509_NAME_get_text_by_OBJ(name, obj, buf, len));
80 }
81
82 int
X509_NAME_get_text_by_OBJ(X509_NAME * name,const ASN1_OBJECT * obj,char * buf,int len)83 X509_NAME_get_text_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj, char *buf,
84 int len)
85 {
86 int i;
87 ASN1_STRING *data;
88
89 i = X509_NAME_get_index_by_OBJ(name, obj, -1);
90 if (i < 0)
91 return (-1);
92 data = X509_NAME_ENTRY_get_data(X509_NAME_get_entry(name, i));
93 i = (data->length > (len - 1)) ? (len - 1) : data->length;
94 if (buf == NULL)
95 return (data->length);
96 if (i >= 0) {
97 memcpy(buf, data->data, i);
98 buf[i] = '\0';
99 }
100 return (i);
101 }
102
103 int
X509_NAME_entry_count(const X509_NAME * name)104 X509_NAME_entry_count(const X509_NAME *name)
105 {
106 if (name == NULL)
107 return (0);
108 return (sk_X509_NAME_ENTRY_num(name->entries));
109 }
110
111 int
X509_NAME_get_index_by_NID(const X509_NAME * name,int nid,int lastpos)112 X509_NAME_get_index_by_NID(const X509_NAME *name, int nid, int lastpos)
113 {
114 ASN1_OBJECT *obj;
115
116 obj = OBJ_nid2obj(nid);
117 if (obj == NULL)
118 return (-2);
119 return (X509_NAME_get_index_by_OBJ(name, obj, lastpos));
120 }
121
122 /* NOTE: you should be passsing -1, not 0 as lastpos */
123 int
X509_NAME_get_index_by_OBJ(const X509_NAME * name,const ASN1_OBJECT * obj,int lastpos)124 X509_NAME_get_index_by_OBJ(const X509_NAME *name, const ASN1_OBJECT *obj,
125 int lastpos)
126 {
127 int n;
128 X509_NAME_ENTRY *ne;
129 STACK_OF(X509_NAME_ENTRY) *sk;
130
131 if (name == NULL)
132 return (-1);
133 if (lastpos < 0)
134 lastpos = -1;
135 sk = name->entries;
136 n = sk_X509_NAME_ENTRY_num(sk);
137 for (lastpos++; lastpos < n; lastpos++) {
138 ne = sk_X509_NAME_ENTRY_value(sk, lastpos);
139 if (OBJ_cmp(ne->object, obj) == 0)
140 return (lastpos);
141 }
142 return (-1);
143 }
144
145 X509_NAME_ENTRY *
X509_NAME_get_entry(const X509_NAME * name,int loc)146 X509_NAME_get_entry(const X509_NAME *name, int loc)
147 {
148 if (name == NULL || sk_X509_NAME_ENTRY_num(name->entries) <= loc ||
149 loc < 0)
150 return (NULL);
151 else
152 return (sk_X509_NAME_ENTRY_value(name->entries, loc));
153 }
154
155 X509_NAME_ENTRY *
X509_NAME_delete_entry(X509_NAME * name,int loc)156 X509_NAME_delete_entry(X509_NAME *name, int loc)
157 {
158 X509_NAME_ENTRY *ret;
159 int i, n, set_prev, set_next;
160 STACK_OF(X509_NAME_ENTRY) *sk;
161
162 if (name == NULL || sk_X509_NAME_ENTRY_num(name->entries) <= loc ||
163 loc < 0)
164 return (NULL);
165 sk = name->entries;
166 ret = sk_X509_NAME_ENTRY_delete(sk, loc);
167 n = sk_X509_NAME_ENTRY_num(sk);
168 name->modified = 1;
169 if (loc == n)
170 return (ret);
171
172 /* else we need to fixup the set field */
173 if (loc != 0)
174 set_prev = (sk_X509_NAME_ENTRY_value(sk, loc - 1))->set;
175 else
176 set_prev = ret->set - 1;
177 set_next = sk_X509_NAME_ENTRY_value(sk, loc)->set;
178
179 /* set_prev is the previous set
180 * set is the current set
181 * set_next is the following
182 * prev 1 1 1 1 1 1 1 1
183 * set 1 1 2 2
184 * next 1 1 2 2 2 2 3 2
185 * so basically only if prev and next differ by 2, then
186 * re-number down by 1 */
187 if (set_prev + 1 < set_next)
188 for (i = loc; i < n; i++)
189 sk_X509_NAME_ENTRY_value(sk, i)->set--;
190 return (ret);
191 }
192
193 int
X509_NAME_add_entry_by_OBJ(X509_NAME * name,const ASN1_OBJECT * obj,int type,const unsigned char * bytes,int len,int loc,int set)194 X509_NAME_add_entry_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj, int type,
195 const unsigned char *bytes, int len, int loc, int set)
196 {
197 X509_NAME_ENTRY *ne;
198 int ret;
199
200 ne = X509_NAME_ENTRY_create_by_OBJ(NULL, obj, type, bytes, len);
201 if (!ne)
202 return 0;
203 ret = X509_NAME_add_entry(name, ne, loc, set);
204 X509_NAME_ENTRY_free(ne);
205 return ret;
206 }
207
208 int
X509_NAME_add_entry_by_NID(X509_NAME * name,int nid,int type,const unsigned char * bytes,int len,int loc,int set)209 X509_NAME_add_entry_by_NID(X509_NAME *name, int nid, int type,
210 const unsigned char *bytes, int len, int loc, int set)
211 {
212 X509_NAME_ENTRY *ne;
213 int ret;
214
215 ne = X509_NAME_ENTRY_create_by_NID(NULL, nid, type, bytes, len);
216 if (!ne)
217 return 0;
218 ret = X509_NAME_add_entry(name, ne, loc, set);
219 X509_NAME_ENTRY_free(ne);
220 return ret;
221 }
222
223 int
X509_NAME_add_entry_by_txt(X509_NAME * name,const char * field,int type,const unsigned char * bytes,int len,int loc,int set)224 X509_NAME_add_entry_by_txt(X509_NAME *name, const char *field, int type,
225 const unsigned char *bytes, int len, int loc, int set)
226 {
227 X509_NAME_ENTRY *ne;
228 int ret;
229
230 ne = X509_NAME_ENTRY_create_by_txt(NULL, field, type, bytes, len);
231 if (!ne)
232 return 0;
233 ret = X509_NAME_add_entry(name, ne, loc, set);
234 X509_NAME_ENTRY_free(ne);
235 return ret;
236 }
237
238 /* if set is -1, append to previous set, 0 'a new one', and 1,
239 * prepend to the guy we are about to stomp on. */
240 int
X509_NAME_add_entry(X509_NAME * name,const X509_NAME_ENTRY * ne,int loc,int set)241 X509_NAME_add_entry(X509_NAME *name, const X509_NAME_ENTRY *ne, int loc,
242 int set)
243 {
244 X509_NAME_ENTRY *new_name = NULL;
245 int n, i, inc;
246 STACK_OF(X509_NAME_ENTRY) *sk;
247
248 if (name == NULL)
249 return (0);
250 sk = name->entries;
251 n = sk_X509_NAME_ENTRY_num(sk);
252 if (loc > n)
253 loc = n;
254 else if (loc < 0)
255 loc = n;
256 inc = (set == 0);
257 name->modified = 1;
258
259 if (set == -1) {
260 if (loc == 0) {
261 set = 0;
262 inc = 1;
263 } else
264 set = sk_X509_NAME_ENTRY_value(sk, loc - 1)->set;
265 } else /* if (set >= 0) */ {
266 if (loc >= n) {
267 if (loc != 0)
268 set = sk_X509_NAME_ENTRY_value(sk, loc - 1)->set + 1;
269 else
270 set = 0;
271 } else
272 set = sk_X509_NAME_ENTRY_value(sk, loc)->set;
273 }
274
275 /* OpenSSL has ASN1-generated X509_NAME_ENTRY_dup() without const. */
276 if ((new_name = X509_NAME_ENTRY_dup((X509_NAME_ENTRY *)ne)) == NULL)
277 goto err;
278 new_name->set = set;
279 if (!sk_X509_NAME_ENTRY_insert(sk, new_name, loc)) {
280 X509error(ERR_R_MALLOC_FAILURE);
281 goto err;
282 }
283 if (inc) {
284 n = sk_X509_NAME_ENTRY_num(sk);
285 for (i = loc + 1; i < n; i++)
286 sk_X509_NAME_ENTRY_value(sk, i)->set += 1;
287 }
288 return (1);
289
290 err:
291 if (new_name != NULL)
292 X509_NAME_ENTRY_free(new_name);
293 return (0);
294 }
295
296 X509_NAME_ENTRY *
X509_NAME_ENTRY_create_by_txt(X509_NAME_ENTRY ** ne,const char * field,int type,const unsigned char * bytes,int len)297 X509_NAME_ENTRY_create_by_txt(X509_NAME_ENTRY **ne,
298 const char *field, int type, const unsigned char *bytes, int len)
299 {
300 ASN1_OBJECT *obj;
301 X509_NAME_ENTRY *nentry;
302
303 obj = OBJ_txt2obj(field, 0);
304 if (obj == NULL) {
305 X509error(X509_R_INVALID_FIELD_NAME);
306 ERR_asprintf_error_data("name=%s", field);
307 return (NULL);
308 }
309 nentry = X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len);
310 ASN1_OBJECT_free(obj);
311 return nentry;
312 }
313
314 X509_NAME_ENTRY *
X509_NAME_ENTRY_create_by_NID(X509_NAME_ENTRY ** ne,int nid,int type,const unsigned char * bytes,int len)315 X509_NAME_ENTRY_create_by_NID(X509_NAME_ENTRY **ne, int nid, int type,
316 const unsigned char *bytes, int len)
317 {
318 ASN1_OBJECT *obj;
319 X509_NAME_ENTRY *nentry;
320
321 obj = OBJ_nid2obj(nid);
322 if (obj == NULL) {
323 X509error(X509_R_UNKNOWN_NID);
324 return (NULL);
325 }
326 nentry = X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len);
327 ASN1_OBJECT_free(obj);
328 return nentry;
329 }
330
331 X509_NAME_ENTRY *
X509_NAME_ENTRY_create_by_OBJ(X509_NAME_ENTRY ** ne,const ASN1_OBJECT * obj,int type,const unsigned char * bytes,int len)332 X509_NAME_ENTRY_create_by_OBJ(X509_NAME_ENTRY **ne, const ASN1_OBJECT *obj,
333 int type, const unsigned char *bytes, int len)
334 {
335 X509_NAME_ENTRY *ret;
336
337 if ((ne == NULL) || (*ne == NULL)) {
338 if ((ret = X509_NAME_ENTRY_new()) == NULL)
339 return (NULL);
340 } else
341 ret= *ne;
342
343 if (!X509_NAME_ENTRY_set_object(ret, obj))
344 goto err;
345 if (!X509_NAME_ENTRY_set_data(ret, type, bytes, len))
346 goto err;
347
348 if ((ne != NULL) && (*ne == NULL))
349 *ne = ret;
350 return (ret);
351
352 err:
353 if ((ne == NULL) || (ret != *ne))
354 X509_NAME_ENTRY_free(ret);
355 return (NULL);
356 }
357
358 int
X509_NAME_ENTRY_set_object(X509_NAME_ENTRY * ne,const ASN1_OBJECT * obj)359 X509_NAME_ENTRY_set_object(X509_NAME_ENTRY *ne, const ASN1_OBJECT *obj)
360 {
361 if ((ne == NULL) || (obj == NULL)) {
362 X509error(ERR_R_PASSED_NULL_PARAMETER);
363 return (0);
364 }
365 ASN1_OBJECT_free(ne->object);
366 ne->object = OBJ_dup(obj);
367 return ((ne->object == NULL) ? 0 : 1);
368 }
369
370 int
X509_NAME_ENTRY_set_data(X509_NAME_ENTRY * ne,int type,const unsigned char * bytes,int len)371 X509_NAME_ENTRY_set_data(X509_NAME_ENTRY *ne, int type,
372 const unsigned char *bytes, int len)
373 {
374 int i;
375
376 if ((ne == NULL) || ((bytes == NULL) && (len != 0)))
377 return (0);
378 if ((type > 0) && (type & MBSTRING_FLAG))
379 return ASN1_STRING_set_by_NID(&ne->value, bytes, len, type,
380 OBJ_obj2nid(ne->object)) ? 1 : 0;
381 if (len < 0)
382 len = strlen((const char *)bytes);
383 i = ASN1_STRING_set(ne->value, bytes, len);
384 if (!i)
385 return (0);
386 if (type != V_ASN1_UNDEF) {
387 if (type == V_ASN1_APP_CHOOSE)
388 ne->value->type = ASN1_PRINTABLE_type(bytes, len);
389 else
390 ne->value->type = type;
391 }
392 return (1);
393 }
394
395 ASN1_OBJECT *
X509_NAME_ENTRY_get_object(const X509_NAME_ENTRY * ne)396 X509_NAME_ENTRY_get_object(const X509_NAME_ENTRY *ne)
397 {
398 if (ne == NULL)
399 return (NULL);
400 return (ne->object);
401 }
402
403 ASN1_STRING *
X509_NAME_ENTRY_get_data(const X509_NAME_ENTRY * ne)404 X509_NAME_ENTRY_get_data(const X509_NAME_ENTRY *ne)
405 {
406 if (ne == NULL)
407 return (NULL);
408 return (ne->value);
409 }
410
411 int
X509_NAME_ENTRY_set(const X509_NAME_ENTRY * ne)412 X509_NAME_ENTRY_set(const X509_NAME_ENTRY *ne)
413 {
414 return (ne->set);
415 }
416