/src/boringssl/crypto/x509/x509name.cc
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1 | | // Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. |
2 | | // |
3 | | // Licensed under the Apache License, Version 2.0 (the "License"); |
4 | | // you may not use this file except in compliance with the License. |
5 | | // You may obtain a copy of the License at |
6 | | // |
7 | | // https://www.apache.org/licenses/LICENSE-2.0 |
8 | | // |
9 | | // Unless required by applicable law or agreed to in writing, software |
10 | | // distributed under the License is distributed on an "AS IS" BASIS, |
11 | | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
12 | | // See the License for the specific language governing permissions and |
13 | | // limitations under the License. |
14 | | |
15 | | #include <string.h> |
16 | | |
17 | | #include <openssl/asn1.h> |
18 | | #include <openssl/bytestring.h> |
19 | | #include <openssl/err.h> |
20 | | #include <openssl/evp.h> |
21 | | #include <openssl/obj.h> |
22 | | #include <openssl/stack.h> |
23 | | #include <openssl/x509.h> |
24 | | |
25 | | #include "../internal.h" |
26 | | #include "internal.h" |
27 | | |
28 | | |
29 | | using namespace bssl; |
30 | | |
31 | | int X509_NAME_get_text_by_NID(const X509_NAME *name, int nid, char *buf, |
32 | 0 | int len) { |
33 | 0 | const ASN1_OBJECT *obj; |
34 | |
|
35 | 0 | obj = OBJ_nid2obj(nid); |
36 | 0 | if (obj == nullptr) { |
37 | 0 | return -1; |
38 | 0 | } |
39 | 0 | return (X509_NAME_get_text_by_OBJ(name, obj, buf, len)); |
40 | 0 | } |
41 | | |
42 | | int X509_NAME_get_text_by_OBJ(const X509_NAME *name, const ASN1_OBJECT *obj, |
43 | 0 | char *buf, int len) { |
44 | 0 | int i = X509_NAME_get_index_by_OBJ(name, obj, -1); |
45 | 0 | if (i < 0) { |
46 | 0 | return -1; |
47 | 0 | } |
48 | 0 | const ASN1_STRING *data = |
49 | 0 | X509_NAME_ENTRY_get_data(X509_NAME_get_entry(name, i)); |
50 | 0 | unsigned char *text = nullptr; |
51 | 0 | int ret = -1; |
52 | 0 | int text_len = ASN1_STRING_to_UTF8(&text, data); |
53 | | // Fail if we could not encode as UTF-8. |
54 | 0 | if (text_len < 0) { |
55 | 0 | goto out; |
56 | 0 | } |
57 | 0 | CBS cbs; |
58 | 0 | CBS_init(&cbs, text, text_len); |
59 | | // Fail if the UTF-8 encoding contains a 0 byte because this is returned as a |
60 | | // C string and callers very often do not check. |
61 | 0 | if (CBS_contains_zero_byte(&cbs)) { |
62 | 0 | goto out; |
63 | 0 | } |
64 | | // We still support the "pass NULL to find out how much" API |
65 | 0 | if (buf != nullptr) { |
66 | 0 | if (text_len >= len || len <= 0 || |
67 | 0 | !CBS_copy_bytes(&cbs, (uint8_t *)buf, text_len)) { |
68 | 0 | goto out; |
69 | 0 | } |
70 | | // It must be a C string |
71 | 0 | buf[text_len] = '\0'; |
72 | 0 | } |
73 | 0 | ret = text_len; |
74 | |
|
75 | 0 | out: |
76 | 0 | OPENSSL_free(text); |
77 | 0 | return ret; |
78 | 0 | } |
79 | | |
80 | 189 | int X509_NAME_entry_count(const X509_NAME *name) { |
81 | 189 | if (name == nullptr) { |
82 | 0 | return 0; |
83 | 0 | } |
84 | 189 | const auto *impl = FromOpaque(name); |
85 | 189 | return (int)sk_X509_NAME_ENTRY_num(impl->entries.get()); |
86 | 189 | } |
87 | | |
88 | 0 | int X509_NAME_get_index_by_NID(const X509_NAME *name, int nid, int lastpos) { |
89 | 0 | const ASN1_OBJECT *obj; |
90 | |
|
91 | 0 | obj = OBJ_nid2obj(nid); |
92 | 0 | if (obj == nullptr) { |
93 | 0 | return -2; |
94 | 0 | } |
95 | 0 | return X509_NAME_get_index_by_OBJ(name, obj, lastpos); |
96 | 0 | } |
97 | | |
98 | | // NOTE: you should be passing -1, not 0 as lastpos |
99 | | int X509_NAME_get_index_by_OBJ(const X509_NAME *name, const ASN1_OBJECT *obj, |
100 | 0 | int lastpos) { |
101 | 0 | if (name == nullptr) { |
102 | 0 | return -1; |
103 | 0 | } |
104 | 0 | const auto *impl = FromOpaque(name); |
105 | 0 | if (lastpos < 0) { |
106 | 0 | lastpos = -1; |
107 | 0 | } |
108 | 0 | const STACK_OF(X509_NAME_ENTRY) *sk = impl->entries.get(); |
109 | 0 | int n = (int)sk_X509_NAME_ENTRY_num(sk); |
110 | 0 | for (lastpos++; lastpos < n; lastpos++) { |
111 | 0 | const X509_NAME_ENTRY *ne = sk_X509_NAME_ENTRY_value(sk, lastpos); |
112 | 0 | if (OBJ_cmp(X509_NAME_ENTRY_get_object(ne), obj) == 0) { |
113 | 0 | return lastpos; |
114 | 0 | } |
115 | 0 | } |
116 | 0 | return -1; |
117 | 0 | } |
118 | | |
119 | 572 | X509_NAME_ENTRY *X509_NAME_get_entry(const X509_NAME *name, int loc) { |
120 | 572 | if (name == nullptr) { |
121 | 0 | return nullptr; |
122 | 0 | } |
123 | 572 | const auto *impl = FromOpaque(name); |
124 | 572 | if (loc < 0 || sk_X509_NAME_ENTRY_num(impl->entries.get()) <= (size_t)loc) { |
125 | 0 | return nullptr; |
126 | 572 | } else { |
127 | 572 | return (sk_X509_NAME_ENTRY_value(impl->entries.get(), loc)); |
128 | 572 | } |
129 | 572 | } |
130 | | |
131 | 0 | X509_NAME_ENTRY *X509_NAME_delete_entry(X509_NAME *name, int loc) { |
132 | 0 | if (name == nullptr) { |
133 | 0 | return nullptr; |
134 | 0 | } |
135 | 0 | const auto *impl = FromOpaque(name); |
136 | 0 | if (loc < 0 || sk_X509_NAME_ENTRY_num(impl->entries.get()) <= (size_t)loc) { |
137 | 0 | return nullptr; |
138 | 0 | } |
139 | | |
140 | 0 | STACK_OF(X509_NAME_ENTRY) *sk = impl->entries.get(); |
141 | 0 | X509_NAME_ENTRY *ret = sk_X509_NAME_ENTRY_delete(sk, loc); |
142 | 0 | size_t n = sk_X509_NAME_ENTRY_num(sk); |
143 | 0 | x509_name_invalidate_cache(name); |
144 | 0 | if ((size_t)loc == n) { |
145 | 0 | return ret; |
146 | 0 | } |
147 | | |
148 | 0 | int set_prev; |
149 | 0 | if (loc != 0) { |
150 | 0 | set_prev = FromOpaque(sk_X509_NAME_ENTRY_value(sk, loc - 1))->set; |
151 | 0 | } else { |
152 | 0 | set_prev = FromOpaque(ret)->set - 1; |
153 | 0 | } |
154 | 0 | int set_next = FromOpaque(sk_X509_NAME_ENTRY_value(sk, loc))->set; |
155 | | |
156 | | // If we removed a singleton RDN, update the RDN indices so they are |
157 | | // consecutive again. |
158 | 0 | if (set_prev + 1 < set_next) { |
159 | 0 | for (size_t i = loc; i < n; i++) { |
160 | 0 | FromOpaque(sk_X509_NAME_ENTRY_value(sk, i))->set--; |
161 | 0 | } |
162 | 0 | } |
163 | 0 | return ret; |
164 | 0 | } |
165 | | |
166 | | int X509_NAME_add_entry_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj, |
167 | | int type, const unsigned char *bytes, |
168 | 0 | ossl_ssize_t len, int loc, int set) { |
169 | 0 | X509_NAME_ENTRY *ne = |
170 | 0 | X509_NAME_ENTRY_create_by_OBJ(nullptr, obj, type, bytes, len); |
171 | 0 | if (!ne) { |
172 | 0 | return 0; |
173 | 0 | } |
174 | 0 | int ret = X509_NAME_add_entry(name, ne, loc, set); |
175 | 0 | X509_NAME_ENTRY_free(ne); |
176 | 0 | return ret; |
177 | 0 | } |
178 | | |
179 | | int X509_NAME_add_entry_by_NID(X509_NAME *name, int nid, int type, |
180 | | const unsigned char *bytes, ossl_ssize_t len, |
181 | 0 | int loc, int set) { |
182 | 0 | X509_NAME_ENTRY *ne = |
183 | 0 | X509_NAME_ENTRY_create_by_NID(nullptr, nid, type, bytes, len); |
184 | 0 | if (!ne) { |
185 | 0 | return 0; |
186 | 0 | } |
187 | 0 | int ret = X509_NAME_add_entry(name, ne, loc, set); |
188 | 0 | X509_NAME_ENTRY_free(ne); |
189 | 0 | return ret; |
190 | 0 | } |
191 | | |
192 | | int X509_NAME_add_entry_by_txt(X509_NAME *name, const char *field, int type, |
193 | | const unsigned char *bytes, ossl_ssize_t len, |
194 | 0 | int loc, int set) { |
195 | 0 | X509_NAME_ENTRY *ne = |
196 | 0 | X509_NAME_ENTRY_create_by_txt(nullptr, field, type, bytes, len); |
197 | 0 | if (!ne) { |
198 | 0 | return 0; |
199 | 0 | } |
200 | 0 | int ret = X509_NAME_add_entry(name, ne, loc, set); |
201 | 0 | X509_NAME_ENTRY_free(ne); |
202 | 0 | return ret; |
203 | 0 | } |
204 | | |
205 | | // if set is -1, append to previous set, 0 'a new one', and 1, prepend to the |
206 | | // guy we are about to stomp on. |
207 | | int X509_NAME_add_entry(X509_NAME *name, const X509_NAME_ENTRY *entry, int loc, |
208 | 0 | int set) { |
209 | 0 | if (name == nullptr) { |
210 | 0 | return 0; |
211 | 0 | } |
212 | 0 | auto *impl = FromOpaque(name); |
213 | 0 | if (impl->entries == nullptr) { |
214 | 0 | impl->entries.reset(sk_X509_NAME_ENTRY_new_null()); |
215 | 0 | if (impl->entries == nullptr) { |
216 | 0 | return 0; |
217 | 0 | } |
218 | 0 | } |
219 | | |
220 | 0 | STACK_OF(X509_NAME_ENTRY) *sk = impl->entries.get(); |
221 | 0 | int n = (int)sk_X509_NAME_ENTRY_num(sk); |
222 | 0 | if (loc > n) { |
223 | 0 | loc = n; |
224 | 0 | } else if (loc < 0) { |
225 | 0 | loc = n; |
226 | 0 | } |
227 | |
|
228 | 0 | bool inc = set == 0; |
229 | 0 | x509_name_invalidate_cache(name); |
230 | |
|
231 | 0 | if (set == -1) { |
232 | 0 | if (loc == 0) { |
233 | 0 | set = 0; |
234 | 0 | inc = 1; |
235 | 0 | } else { |
236 | 0 | set = FromOpaque(sk_X509_NAME_ENTRY_value(sk, loc - 1))->set; |
237 | 0 | } |
238 | 0 | } else { // if (set >= 0) |
239 | 0 | if (loc >= n) { |
240 | 0 | if (loc != 0) { |
241 | 0 | set = FromOpaque(sk_X509_NAME_ENTRY_value(sk, loc - 1))->set + 1; |
242 | 0 | } else { |
243 | 0 | set = 0; |
244 | 0 | } |
245 | 0 | } else { |
246 | 0 | set = FromOpaque(sk_X509_NAME_ENTRY_value(sk, loc))->set; |
247 | 0 | } |
248 | 0 | } |
249 | |
|
250 | 0 | UniquePtr<X509_NAME_ENTRY> new_entry(X509_NAME_ENTRY_dup(entry)); |
251 | 0 | if (new_entry == nullptr) { |
252 | 0 | return 0; |
253 | 0 | } |
254 | 0 | FromOpaque(new_entry.get())->set = set; |
255 | 0 | if (!sk_X509_NAME_ENTRY_insert(sk, new_entry.get(), loc)) { |
256 | 0 | return 0; |
257 | 0 | } |
258 | 0 | new_entry.release(); // `sk` took ownership. |
259 | 0 | if (inc) { |
260 | 0 | n = (int)sk_X509_NAME_ENTRY_num(sk); |
261 | 0 | for (int i = loc + 1; i < n; i++) { |
262 | 0 | FromOpaque(sk_X509_NAME_ENTRY_value(sk, i))->set += 1; |
263 | 0 | } |
264 | 0 | } |
265 | 0 | return 1; |
266 | 0 | } |
267 | | |
268 | | X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_txt(X509_NAME_ENTRY **ne, |
269 | | const char *field, int type, |
270 | | const unsigned char *bytes, |
271 | 0 | ossl_ssize_t len) { |
272 | 0 | ASN1_OBJECT *obj; |
273 | 0 | X509_NAME_ENTRY *nentry; |
274 | |
|
275 | 0 | obj = OBJ_txt2obj(field, 0); |
276 | 0 | if (obj == nullptr) { |
277 | 0 | OPENSSL_PUT_ERROR(X509, X509_R_INVALID_FIELD_NAME); |
278 | 0 | ERR_add_error_data(2, "name=", field); |
279 | 0 | return nullptr; |
280 | 0 | } |
281 | 0 | nentry = X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len); |
282 | 0 | ASN1_OBJECT_free(obj); |
283 | 0 | return nentry; |
284 | 0 | } |
285 | | |
286 | | X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_NID(X509_NAME_ENTRY **ne, int nid, |
287 | | int type, |
288 | | const unsigned char *bytes, |
289 | 0 | ossl_ssize_t len) { |
290 | 0 | const ASN1_OBJECT *obj = OBJ_nid2obj(nid); |
291 | 0 | if (obj == nullptr) { |
292 | 0 | OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_NID); |
293 | 0 | return nullptr; |
294 | 0 | } |
295 | 0 | return X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len); |
296 | 0 | } |
297 | | |
298 | | X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_OBJ(X509_NAME_ENTRY **ne, |
299 | | const ASN1_OBJECT *obj, int type, |
300 | | const unsigned char *bytes, |
301 | 0 | ossl_ssize_t len) { |
302 | 0 | X509_NAME_ENTRY *ret; |
303 | |
|
304 | 0 | if ((ne == nullptr) || (*ne == nullptr)) { |
305 | 0 | if ((ret = X509_NAME_ENTRY_new()) == nullptr) { |
306 | 0 | return nullptr; |
307 | 0 | } |
308 | 0 | } else { |
309 | 0 | ret = *ne; |
310 | 0 | } |
311 | | |
312 | 0 | if (!X509_NAME_ENTRY_set_object(ret, obj)) { |
313 | 0 | goto err; |
314 | 0 | } |
315 | 0 | if (!X509_NAME_ENTRY_set_data(ret, type, bytes, len)) { |
316 | 0 | goto err; |
317 | 0 | } |
318 | | |
319 | 0 | if ((ne != nullptr) && (*ne == nullptr)) { |
320 | 0 | *ne = ret; |
321 | 0 | } |
322 | 0 | return ret; |
323 | 0 | err: |
324 | 0 | if ((ne == nullptr) || (ret != *ne)) { |
325 | 0 | X509_NAME_ENTRY_free(ret); |
326 | 0 | } |
327 | 0 | return nullptr; |
328 | 0 | } |
329 | | |
330 | 0 | int X509_NAME_ENTRY_set_object(X509_NAME_ENTRY *ne, const ASN1_OBJECT *obj) { |
331 | 0 | auto *ne_impl = FromOpaque(ne); |
332 | 0 | if (ne_impl == nullptr || obj == nullptr) { |
333 | 0 | OPENSSL_PUT_ERROR(X509, ERR_R_PASSED_NULL_PARAMETER); |
334 | 0 | return 0; |
335 | 0 | } |
336 | 0 | ne_impl->object.reset(OBJ_dup(obj)); |
337 | 0 | return ne_impl->object != nullptr; |
338 | 0 | } |
339 | | |
340 | | int X509_NAME_ENTRY_set_data(X509_NAME_ENTRY *ne, int type, |
341 | 0 | const unsigned char *bytes, ossl_ssize_t len) { |
342 | 0 | auto *ne_impl = FromOpaque(ne); |
343 | 0 | if (ne_impl == nullptr || (bytes == nullptr && len != 0)) { |
344 | 0 | return 0; |
345 | 0 | } |
346 | 0 | if ((type > 0) && (type & MBSTRING_FLAG)) { |
347 | 0 | ASN1_STRING *dst = ne_impl->value.get(); |
348 | 0 | return ASN1_STRING_set_by_NID(&dst, bytes, len, type, |
349 | 0 | OBJ_obj2nid(ne_impl->object.get())) != |
350 | 0 | nullptr; |
351 | 0 | } |
352 | 0 | if (len < 0) { |
353 | 0 | len = strlen((const char *)bytes); |
354 | 0 | } |
355 | 0 | if (!ASN1_STRING_set(ne_impl->value.get(), bytes, len)) { |
356 | 0 | return 0; |
357 | 0 | } |
358 | 0 | if (type != V_ASN1_UNDEF) { |
359 | 0 | ne_impl->value->type = type; |
360 | 0 | } |
361 | 0 | return 1; |
362 | 0 | } |
363 | | |
364 | 24.2k | ASN1_OBJECT *X509_NAME_ENTRY_get_object(const X509_NAME_ENTRY *ne) { |
365 | 24.2k | if (ne == nullptr) { |
366 | 0 | return nullptr; |
367 | 0 | } |
368 | 24.2k | return FromOpaque(ne)->object.get(); |
369 | 24.2k | } |
370 | | |
371 | 15.2k | ASN1_STRING *X509_NAME_ENTRY_get_data(const X509_NAME_ENTRY *ne) { |
372 | 15.2k | if (ne == nullptr) { |
373 | 0 | return nullptr; |
374 | 0 | } |
375 | | // This function is not const-correct for OpenSSL compatibility. |
376 | 15.2k | return const_cast<ASN1_STRING*>(FromOpaque(ne)->value.get()); |
377 | 15.2k | } |