1 /*
2 * Copyright 1995-2024 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 #include <stdio.h>
11 #include "internal/cryptlib.h"
12 #include <openssl/safestack.h>
13 #include <openssl/asn1.h>
14 #include <openssl/objects.h>
15 #include <openssl/evp.h>
16 #include <openssl/x509.h>
17 #include <openssl/x509v3.h>
18 #include "crypto/x509.h"
19 #include "x509_local.h"
20
X509at_get_attr_count(const STACK_OF (X509_ATTRIBUTE)* x)21 int X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x)
22 {
23 return sk_X509_ATTRIBUTE_num(x);
24 }
25
X509at_get_attr_by_NID(const STACK_OF (X509_ATTRIBUTE)* x,int nid,int lastpos)26 int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid,
27 int lastpos)
28 {
29 const ASN1_OBJECT *obj = OBJ_nid2obj(nid);
30
31 if (obj == NULL)
32 return -2;
33 return X509at_get_attr_by_OBJ(x, obj, lastpos);
34 }
35
X509at_get_attr_by_OBJ(const STACK_OF (X509_ATTRIBUTE)* sk,const ASN1_OBJECT * obj,int lastpos)36 int X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk,
37 const ASN1_OBJECT *obj, int lastpos)
38 {
39 int n;
40 X509_ATTRIBUTE *ex;
41
42 if (sk == NULL)
43 return -1;
44 lastpos++;
45 if (lastpos < 0)
46 lastpos = 0;
47 n = sk_X509_ATTRIBUTE_num(sk);
48 for (; lastpos < n; lastpos++) {
49 ex = sk_X509_ATTRIBUTE_value(sk, lastpos);
50 if (OBJ_cmp(ex->object, obj) == 0)
51 return lastpos;
52 }
53 return -1;
54 }
55
X509at_get_attr(const STACK_OF (X509_ATTRIBUTE)* x,int loc)56 X509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc)
57 {
58 if (x == NULL) {
59 ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
60 return NULL;
61 }
62 if (sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0) {
63 ERR_raise(ERR_LIB_X509, ERR_R_PASSED_INVALID_ARGUMENT);
64 return NULL;
65 }
66 return sk_X509_ATTRIBUTE_value(x, loc);
67 }
68
X509at_delete_attr(STACK_OF (X509_ATTRIBUTE)* x,int loc)69 X509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc)
70 {
71 if (x == NULL) {
72 ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
73 return NULL;
74 }
75 if (sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0) {
76 ERR_raise(ERR_LIB_X509, ERR_R_PASSED_INVALID_ARGUMENT);
77 return NULL;
78 }
79 return sk_X509_ATTRIBUTE_delete(x, loc);
80 }
81
STACK_OF(X509_ATTRIBUTE)82 STACK_OF(X509_ATTRIBUTE) *ossl_x509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x,
83 const X509_ATTRIBUTE *attr)
84 {
85 X509_ATTRIBUTE *new_attr = NULL;
86 STACK_OF(X509_ATTRIBUTE) *sk = NULL;
87
88 if (x == NULL || attr == NULL) {
89 ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
90 return NULL;
91 }
92
93 if (*x == NULL) {
94 if ((sk = sk_X509_ATTRIBUTE_new_null()) == NULL) {
95 ERR_raise(ERR_LIB_X509, ERR_R_CRYPTO_LIB);
96 goto err;
97 }
98 } else {
99 sk = *x;
100 }
101
102 if ((new_attr = X509_ATTRIBUTE_dup(attr)) == NULL)
103 goto err;
104 if (!sk_X509_ATTRIBUTE_push(sk, new_attr)) {
105 ERR_raise(ERR_LIB_X509, ERR_R_CRYPTO_LIB);
106 goto err;
107 }
108 if (*x == NULL)
109 *x = sk;
110 return sk;
111 err:
112 X509_ATTRIBUTE_free(new_attr);
113 if (*x == NULL)
114 sk_X509_ATTRIBUTE_free(sk);
115 return NULL;
116 }
117
STACK_OF(X509_ATTRIBUTE)118 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x,
119 X509_ATTRIBUTE *attr)
120 {
121 if (x == NULL || attr == NULL) {
122 ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
123 return NULL;
124 }
125 if (*x != NULL && X509at_get_attr_by_OBJ(*x, attr->object, -1) != -1) {
126 ERR_raise_data(ERR_LIB_X509, X509_R_DUPLICATE_ATTRIBUTE,
127 "name=%s", OBJ_nid2sn(OBJ_obj2nid(attr->object)));
128 return NULL;
129 }
130
131 return ossl_x509at_add1_attr(x, attr);
132 }
133
STACK_OF(X509_ATTRIBUTE)134 STACK_OF(X509_ATTRIBUTE) *ossl_x509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE) **x,
135 const ASN1_OBJECT *obj,
136 int type,
137 const unsigned char *bytes,
138 int len)
139 {
140 X509_ATTRIBUTE *attr;
141 STACK_OF(X509_ATTRIBUTE) *ret;
142
143 attr = X509_ATTRIBUTE_create_by_OBJ(NULL, obj, type, bytes, len);
144 if (attr == NULL)
145 return 0;
146 ret = ossl_x509at_add1_attr(x, attr);
147 X509_ATTRIBUTE_free(attr);
148 return ret;
149 }
150
STACK_OF(X509_ATTRIBUTE)151 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE)
152 **x, const ASN1_OBJECT *obj,
153 int type,
154 const unsigned char *bytes,
155 int len)
156 {
157 if (x == NULL || obj == NULL) {
158 ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
159 return NULL;
160 }
161 if (*x != NULL && X509at_get_attr_by_OBJ(*x, obj, -1) != -1) {
162 ERR_raise_data(ERR_LIB_X509, X509_R_DUPLICATE_ATTRIBUTE,
163 "name=%s", OBJ_nid2sn(OBJ_obj2nid(obj)));
164 return NULL;
165 }
166
167 return ossl_x509at_add1_attr_by_OBJ(x, obj, type, bytes, len);
168 }
169
STACK_OF(X509_ATTRIBUTE)170 STACK_OF(X509_ATTRIBUTE) *ossl_x509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE) **x,
171 int nid, int type,
172 const unsigned char *bytes,
173 int len)
174 {
175 X509_ATTRIBUTE *attr;
176 STACK_OF(X509_ATTRIBUTE) *ret;
177
178 attr = X509_ATTRIBUTE_create_by_NID(NULL, nid, type, bytes, len);
179 if (attr == NULL)
180 return 0;
181 ret = ossl_x509at_add1_attr(x, attr);
182 X509_ATTRIBUTE_free(attr);
183 return ret;
184 }
185
STACK_OF(X509_ATTRIBUTE)186 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE)
187 **x, int nid, int type,
188 const unsigned char *bytes,
189 int len)
190 {
191 if (x == NULL) {
192 ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
193 return NULL;
194 }
195 if (*x != NULL && X509at_get_attr_by_NID(*x, nid, -1) != -1) {
196 ERR_raise_data(ERR_LIB_X509, X509_R_DUPLICATE_ATTRIBUTE,
197 "name=%s", OBJ_nid2sn(nid));
198 return NULL;
199 }
200
201 return ossl_x509at_add1_attr_by_NID(x, nid, type, bytes, len);
202 }
203
STACK_OF(X509_ATTRIBUTE)204 STACK_OF(X509_ATTRIBUTE) *ossl_x509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE) **x,
205 const char *attrname,
206 int type,
207 const unsigned char *bytes,
208 int len)
209 {
210 X509_ATTRIBUTE *attr;
211 STACK_OF(X509_ATTRIBUTE) *ret;
212
213 attr = X509_ATTRIBUTE_create_by_txt(NULL, attrname, type, bytes, len);
214 if (attr == NULL)
215 return 0;
216 ret = ossl_x509at_add1_attr(x, attr);
217 X509_ATTRIBUTE_free(attr);
218 return ret;
219 }
220
STACK_OF(X509_ATTRIBUTE)221 STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE)
222 **x, const char *attrname,
223 int type,
224 const unsigned char *bytes,
225 int len)
226 {
227 X509_ATTRIBUTE *attr;
228 STACK_OF(X509_ATTRIBUTE) *ret;
229
230 attr = X509_ATTRIBUTE_create_by_txt(NULL, attrname, type, bytes, len);
231 if (attr == NULL)
232 return 0;
233 ret = X509at_add1_attr(x, attr);
234 X509_ATTRIBUTE_free(attr);
235 return ret;
236 }
237
X509at_get0_data_by_OBJ(const STACK_OF (X509_ATTRIBUTE)* x,const ASN1_OBJECT * obj,int lastpos,int type)238 void *X509at_get0_data_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *x,
239 const ASN1_OBJECT *obj, int lastpos, int type)
240 {
241 int i = X509at_get_attr_by_OBJ(x, obj, lastpos);
242 X509_ATTRIBUTE *at;
243
244 if (i == -1)
245 return NULL;
246 if (lastpos <= -2 && X509at_get_attr_by_OBJ(x, obj, i) != -1)
247 return NULL;
248 at = X509at_get_attr(x, i);
249 if (lastpos <= -3 && X509_ATTRIBUTE_count(at) != 1)
250 return NULL;
251 return X509_ATTRIBUTE_get0_data(at, 0, type, NULL);
252 }
253
STACK_OF(X509_ATTRIBUTE)254 STACK_OF(X509_ATTRIBUTE) *ossl_x509at_dup(const STACK_OF(X509_ATTRIBUTE) *x)
255 {
256 int i, n = sk_X509_ATTRIBUTE_num(x);
257 STACK_OF(X509_ATTRIBUTE) *sk = NULL;
258
259 for (i = 0; i < n; ++i) {
260 if (X509at_add1_attr(&sk, sk_X509_ATTRIBUTE_value(x, i)) == NULL) {
261 sk_X509_ATTRIBUTE_pop_free(sk, X509_ATTRIBUTE_free);
262 return NULL;
263 }
264 }
265 return sk;
266 }
267
X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE ** attr,int nid,int atrtype,const void * data,int len)268 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid,
269 int atrtype, const void *data,
270 int len)
271 {
272 ASN1_OBJECT *obj = OBJ_nid2obj(nid);
273 X509_ATTRIBUTE *ret;
274
275 if (obj == NULL) {
276 ERR_raise(ERR_LIB_X509, X509_R_UNKNOWN_NID);
277 return NULL;
278 }
279 ret = X509_ATTRIBUTE_create_by_OBJ(attr, obj, atrtype, data, len);
280 if (ret == NULL)
281 ASN1_OBJECT_free(obj);
282 return ret;
283 }
284
X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE ** attr,const ASN1_OBJECT * obj,int atrtype,const void * data,int len)285 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr,
286 const ASN1_OBJECT *obj,
287 int atrtype, const void *data,
288 int len)
289 {
290 X509_ATTRIBUTE *ret;
291
292 if (attr == NULL || *attr == NULL) {
293 if ((ret = X509_ATTRIBUTE_new()) == NULL) {
294 ERR_raise(ERR_LIB_X509, ERR_R_ASN1_LIB);
295 return NULL;
296 }
297 } else {
298 ret = *attr;
299 }
300
301 if (!X509_ATTRIBUTE_set1_object(ret, obj))
302 goto err;
303 if (!X509_ATTRIBUTE_set1_data(ret, atrtype, data, len))
304 goto err;
305
306 if (attr != NULL && *attr == NULL)
307 *attr = ret;
308 return ret;
309 err:
310 if (attr == NULL || ret != *attr)
311 X509_ATTRIBUTE_free(ret);
312 return NULL;
313 }
314
X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE ** attr,const char * atrname,int type,const unsigned char * bytes,int len)315 X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr,
316 const char *atrname, int type,
317 const unsigned char *bytes,
318 int len)
319 {
320 ASN1_OBJECT *obj = OBJ_txt2obj(atrname, 0);
321 X509_ATTRIBUTE *nattr;
322
323 if (obj == NULL) {
324 ERR_raise_data(ERR_LIB_X509, X509_R_INVALID_FIELD_NAME,
325 "name=%s", atrname);
326 return NULL;
327 }
328 nattr = X509_ATTRIBUTE_create_by_OBJ(attr, obj, type, bytes, len);
329 ASN1_OBJECT_free(obj);
330 return nattr;
331 }
332
X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE * attr,const ASN1_OBJECT * obj)333 int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj)
334 {
335 if (attr == NULL || obj == NULL) {
336 ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
337 return 0;
338 }
339 ASN1_OBJECT_free(attr->object);
340 attr->object = OBJ_dup(obj);
341 return attr->object != NULL;
342 }
343
X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE * attr,int attrtype,const void * data,int len)344 int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype,
345 const void *data, int len)
346 {
347 ASN1_TYPE *ttmp = NULL;
348 ASN1_STRING *stmp = NULL;
349 int atype = 0;
350
351 if (attr == NULL) {
352 ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
353 return 0;
354 }
355 if ((attrtype & MBSTRING_FLAG) != 0) {
356 stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype,
357 OBJ_obj2nid(attr->object));
358 if (stmp == NULL) {
359 ERR_raise(ERR_LIB_X509, ERR_R_ASN1_LIB);
360 return 0;
361 }
362 atype = stmp->type;
363 } else if (len != -1) {
364 if ((stmp = ASN1_STRING_type_new(attrtype)) == NULL
365 || !ASN1_STRING_set(stmp, data, len)) {
366 ERR_raise(ERR_LIB_X509, ERR_R_ASN1_LIB);
367 goto err;
368 }
369 atype = attrtype;
370 }
371 /*
372 * This is a bit naughty because the attribute should really have at
373 * least one value but some types use and zero length SET and require
374 * this.
375 */
376 if (attrtype == 0) {
377 ASN1_STRING_free(stmp);
378 return 1;
379 }
380 if ((ttmp = ASN1_TYPE_new()) == NULL) {
381 ERR_raise(ERR_LIB_X509, ERR_R_ASN1_LIB);
382 goto err;
383 }
384 if (len == -1 && (attrtype & MBSTRING_FLAG) == 0) {
385 if (!ASN1_TYPE_set1(ttmp, attrtype, data)) {
386 ERR_raise(ERR_LIB_X509, ERR_R_ASN1_LIB);
387 goto err;
388 }
389 } else {
390 ASN1_TYPE_set(ttmp, atype, stmp);
391 stmp = NULL;
392 }
393 if (!sk_ASN1_TYPE_push(attr->set, ttmp)) {
394 ERR_raise(ERR_LIB_X509, ERR_R_CRYPTO_LIB);
395 goto err;
396 }
397 return 1;
398 err:
399 ASN1_TYPE_free(ttmp);
400 ASN1_STRING_free(stmp);
401 return 0;
402 }
403
X509_ATTRIBUTE_count(const X509_ATTRIBUTE * attr)404 int X509_ATTRIBUTE_count(const X509_ATTRIBUTE *attr)
405 {
406 if (attr == NULL)
407 return 0;
408 return sk_ASN1_TYPE_num(attr->set);
409 }
410
X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE * attr)411 ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr)
412 {
413 if (attr == NULL) {
414 ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
415 return NULL;
416 }
417 return attr->object;
418 }
419
X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE * attr,int idx,int atrtype,void * data)420 void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx,
421 int atrtype, void *data)
422 {
423 ASN1_TYPE *ttmp = X509_ATTRIBUTE_get0_type(attr, idx);
424
425 if (ttmp == NULL)
426 return NULL;
427 if (atrtype == V_ASN1_BOOLEAN
428 || atrtype == V_ASN1_NULL
429 || atrtype != ASN1_TYPE_get(ttmp)) {
430 ERR_raise(ERR_LIB_X509, X509_R_WRONG_TYPE);
431 return NULL;
432 }
433 return ttmp->value.ptr;
434 }
435
X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE * attr,int idx)436 ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx)
437 {
438 if (attr == NULL) {
439 ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
440 return NULL;
441 }
442 return sk_ASN1_TYPE_value(attr->set, idx);
443 }
444
