1/*
2 * Copyright 1995-2018 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 "crypto/x509.h"
18
19int X509_NAME_get_text_by_NID(X509_NAME *name, int nid, char *buf, int len)
20{
21 ASN1_OBJECT *obj;
22
23 obj = OBJ_nid2obj(nid);
24 if (obj == NULL)
25 return -1;
26 return X509_NAME_get_text_by_OBJ(name, obj, buf, len);
27}
28
29int X509_NAME_get_text_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj,
30 char *buf, int len)
31{
32 int i;
33 const ASN1_STRING *data;
34
35 i = X509_NAME_get_index_by_OBJ(name, obj, -1);
36 if (i < 0)
37 return -1;
38 data = X509_NAME_ENTRY_get_data(X509_NAME_get_entry(name, i));
39 if (buf == NULL)
40 return data->length;
41 if (len <= 0)
42 return 0;
43 i = (data->length > (len - 1)) ? (len - 1) : data->length;
44 memcpy(buf, data->data, i);
45 buf[i] = '\0';
46 return i;
47}
48
49int X509_NAME_entry_count(const X509_NAME *name)
50{
51 if (name == NULL)
52 return 0;
53 return sk_X509_NAME_ENTRY_num(name->entries);
54}
55
56int X509_NAME_get_index_by_NID(X509_NAME *name, int nid, int lastpos)
57{
58 ASN1_OBJECT *obj;
59
60 obj = OBJ_nid2obj(nid);
61 if (obj == NULL)
62 return -2;
63 return X509_NAME_get_index_by_OBJ(name, obj, lastpos);
64}
65
66/* NOTE: you should be passing -1, not 0 as lastpos */
67int X509_NAME_get_index_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj, int lastpos)
68{
69 int n;
70 X509_NAME_ENTRY *ne;
71 STACK_OF(X509_NAME_ENTRY) *sk;
72
73 if (name == NULL)
74 return -1;
75 if (lastpos < 0)
76 lastpos = -1;
77 sk = name->entries;
78 n = sk_X509_NAME_ENTRY_num(sk);
79 for (lastpos++; lastpos < n; lastpos++) {
80 ne = sk_X509_NAME_ENTRY_value(sk, lastpos);
81 if (OBJ_cmp(ne->object, obj) == 0)
82 return lastpos;
83 }
84 return -1;
85}
86
87X509_NAME_ENTRY *X509_NAME_get_entry(const X509_NAME *name, int loc)
88{
89 if (name == NULL || sk_X509_NAME_ENTRY_num(name->entries) <= loc
90 || loc < 0)
91 return NULL;
92
93 return sk_X509_NAME_ENTRY_value(name->entries, loc);
94}
95
96X509_NAME_ENTRY *X509_NAME_delete_entry(X509_NAME *name, int loc)
97{
98 X509_NAME_ENTRY *ret;
99 int i, n, set_prev, set_next;
100 STACK_OF(X509_NAME_ENTRY) *sk;
101
102 if (name == NULL || sk_X509_NAME_ENTRY_num(name->entries) <= loc
103 || loc < 0)
104 return NULL;
105
106 sk = name->entries;
107 ret = sk_X509_NAME_ENTRY_delete(sk, loc);
108 n = sk_X509_NAME_ENTRY_num(sk);
109 name->modified = 1;
110 if (loc == n)
111 return ret;
112
113 /* else we need to fixup the set field */
114 if (loc != 0)
115 set_prev = (sk_X509_NAME_ENTRY_value(sk, loc - 1))->set;
116 else
117 set_prev = ret->set - 1;
118 set_next = sk_X509_NAME_ENTRY_value(sk, loc)->set;
119
120 /*-
121 * set_prev is the previous set
122 * set is the current set
123 * set_next is the following
124 * prev 1 1 1 1 1 1 1 1
125 * set 1 1 2 2
126 * next 1 1 2 2 2 2 3 2
127 * so basically only if prev and next differ by 2, then
128 * re-number down by 1
129 */
130 if (set_prev + 1 < set_next)
131 for (i = loc; i < n; i++)
132 sk_X509_NAME_ENTRY_value(sk, i)->set--;
133 return ret;
134}
135
136int X509_NAME_add_entry_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj, int type,
137 const unsigned char *bytes, int len, int loc,
138 int set)
139{
140 X509_NAME_ENTRY *ne;
141 int ret;
142
143 ne = X509_NAME_ENTRY_create_by_OBJ(NULL, obj, type, bytes, len);
144 if (!ne)
145 return 0;
146 ret = X509_NAME_add_entry(name, ne, loc, set);
147 X509_NAME_ENTRY_free(ne);
148 return ret;
149}
150
151int X509_NAME_add_entry_by_NID(X509_NAME *name, int nid, int type,
152 const unsigned char *bytes, int len, int loc,
153 int set)
154{
155 X509_NAME_ENTRY *ne;
156 int ret;
157 ne = X509_NAME_ENTRY_create_by_NID(NULL, nid, type, bytes, len);
158 if (!ne)
159 return 0;
160 ret = X509_NAME_add_entry(name, ne, loc, set);
161 X509_NAME_ENTRY_free(ne);
162 return ret;
163}
164
165int X509_NAME_add_entry_by_txt(X509_NAME *name, const char *field, int type,
166 const unsigned char *bytes, int len, int loc,
167 int set)
168{
169 X509_NAME_ENTRY *ne;
170 int ret;
171 ne = X509_NAME_ENTRY_create_by_txt(NULL, field, type, bytes, len);
172 if (!ne)
173 return 0;
174 ret = X509_NAME_add_entry(name, ne, loc, set);
175 X509_NAME_ENTRY_free(ne);
176 return ret;
177}
178
179/*
180 * if set is -1, append to previous set, 0 'a new one', and 1, prepend to the
181 * guy we are about to stomp on.
182 */
183int X509_NAME_add_entry(X509_NAME *name, const X509_NAME_ENTRY *ne, int loc,
184 int set)
185{
186 X509_NAME_ENTRY *new_name = NULL;
187 int n, i, inc;
188 STACK_OF(X509_NAME_ENTRY) *sk;
189
190 if (name == NULL)
191 return 0;
192 sk = name->entries;
193 n = sk_X509_NAME_ENTRY_num(sk);
194 if (loc > n)
195 loc = n;
196 else if (loc < 0)
197 loc = n;
198 inc = (set == 0);
199 name->modified = 1;
200
201 if (set == -1) {
202 if (loc == 0) {
203 set = 0;
204 inc = 1;
205 } else {
206 set = sk_X509_NAME_ENTRY_value(sk, loc - 1)->set;
207 }
208 } else { /* if (set >= 0) */
209
210 if (loc >= n) {
211 if (loc != 0)
212 set = sk_X509_NAME_ENTRY_value(sk, loc - 1)->set + 1;
213 else
214 set = 0;
215 } else
216 set = sk_X509_NAME_ENTRY_value(sk, loc)->set;
217 }
218
219 /*
220 * X509_NAME_ENTRY_dup is ASN1 generated code, that can't be easily
221 * const'ified; harmless cast since dup() don't modify its input.
222 */
223 if ((new_name = X509_NAME_ENTRY_dup((X509_NAME_ENTRY *)ne)) == NULL)
224 goto err;
225 new_name->set = set;
226 if (!sk_X509_NAME_ENTRY_insert(sk, new_name, loc)) {
227 X509err(X509_F_X509_NAME_ADD_ENTRY, ERR_R_MALLOC_FAILURE);
228 goto err;
229 }
230 if (inc) {
231 n = sk_X509_NAME_ENTRY_num(sk);
232 for (i = loc + 1; i < n; i++)
233 sk_X509_NAME_ENTRY_value(sk, i)->set += 1;
234 }
235 return 1;
236 err:
237 X509_NAME_ENTRY_free(new_name);
238 return 0;
239}
240
241X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_txt(X509_NAME_ENTRY **ne,
242 const char *field, int type,
243 const unsigned char *bytes,
244 int len)
245{
246 ASN1_OBJECT *obj;
247 X509_NAME_ENTRY *nentry;
248
249 obj = OBJ_txt2obj(field, 0);
250 if (obj == NULL) {
251 X509err(X509_F_X509_NAME_ENTRY_CREATE_BY_TXT,
252 X509_R_INVALID_FIELD_NAME);
253 ERR_add_error_data(2, "name=", field);
254 return NULL;
255 }
256 nentry = X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len);
257 ASN1_OBJECT_free(obj);
258 return nentry;
259}
260
261X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_NID(X509_NAME_ENTRY **ne, int nid,
262 int type,
263 const unsigned char *bytes,
264 int len)
265{
266 ASN1_OBJECT *obj;
267 X509_NAME_ENTRY *nentry;
268
269 obj = OBJ_nid2obj(nid);
270 if (obj == NULL) {
271 X509err(X509_F_X509_NAME_ENTRY_CREATE_BY_NID, X509_R_UNKNOWN_NID);
272 return NULL;
273 }
274 nentry = X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len);
275 ASN1_OBJECT_free(obj);
276 return nentry;
277}
278
279X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_OBJ(X509_NAME_ENTRY **ne,
280 const ASN1_OBJECT *obj, int type,
281 const unsigned char *bytes,
282 int len)
283{
284 X509_NAME_ENTRY *ret;
285
286 if ((ne == NULL) || (*ne == NULL)) {
287 if ((ret = X509_NAME_ENTRY_new()) == NULL)
288 return NULL;
289 } else
290 ret = *ne;
291
292 if (!X509_NAME_ENTRY_set_object(ret, obj))
293 goto err;
294 if (!X509_NAME_ENTRY_set_data(ret, type, bytes, len))
295 goto err;
296
297 if ((ne != NULL) && (*ne == NULL))
298 *ne = ret;
299 return ret;
300 err:
301 if ((ne == NULL) || (ret != *ne))
302 X509_NAME_ENTRY_free(ret);
303 return NULL;
304}
305
306int X509_NAME_ENTRY_set_object(X509_NAME_ENTRY *ne, const ASN1_OBJECT *obj)
307{
308 if ((ne == NULL) || (obj == NULL)) {
309 X509err(X509_F_X509_NAME_ENTRY_SET_OBJECT,
310 ERR_R_PASSED_NULL_PARAMETER);
311 return 0;
312 }
313 ASN1_OBJECT_free(ne->object);
314 ne->object = OBJ_dup(obj);
315 return ((ne->object == NULL) ? 0 : 1);
316}
317
318int X509_NAME_ENTRY_set_data(X509_NAME_ENTRY *ne, int type,
319 const unsigned char *bytes, int len)
320{
321 int i;
322
323 if ((ne == NULL) || ((bytes == NULL) && (len != 0)))
324 return 0;
325 if ((type > 0) && (type & MBSTRING_FLAG))
326 return ASN1_STRING_set_by_NID(&ne->value, bytes,
327 len, type,
328 OBJ_obj2nid(ne->object)) ? 1 : 0;
329 if (len < 0)
330 len = strlen((const char *)bytes);
331 i = ASN1_STRING_set(ne->value, bytes, len);
332 if (!i)
333 return 0;
334 if (type != V_ASN1_UNDEF) {
335 if (type == V_ASN1_APP_CHOOSE)
336 ne->value->type = ASN1_PRINTABLE_type(bytes, len);
337 else
338 ne->value->type = type;
339 }
340 return 1;
341}
342
343ASN1_OBJECT *X509_NAME_ENTRY_get_object(const X509_NAME_ENTRY *ne)
344{
345 if (ne == NULL)
346 return NULL;
347 return ne->object;
348}
349
350ASN1_STRING *X509_NAME_ENTRY_get_data(const X509_NAME_ENTRY *ne)
351{
352 if (ne == NULL)
353 return NULL;
354 return ne->value;
355}
356
357int X509_NAME_ENTRY_set(const X509_NAME_ENTRY *ne)
358{
359 return ne->set;
360}
361