1 /*
2 * Copyright 1995-2020 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
X509_NAME_get_text_by_NID(const X509_NAME * name,int nid,char * buf,int len)19 int X509_NAME_get_text_by_NID(const X509_NAME *name, int nid,
20 char *buf, int len)
21 {
22 ASN1_OBJECT *obj;
23
24 obj = OBJ_nid2obj(nid);
25 if (obj == NULL)
26 return -1;
27 return X509_NAME_get_text_by_OBJ(name, obj, buf, len);
28 }
29
X509_NAME_get_text_by_OBJ(const X509_NAME * name,const ASN1_OBJECT * obj,char * buf,int len)30 int X509_NAME_get_text_by_OBJ(const X509_NAME *name, const ASN1_OBJECT *obj,
31 char *buf, int len)
32 {
33 int i;
34 const ASN1_STRING *data;
35
36 i = X509_NAME_get_index_by_OBJ(name, obj, -1);
37 if (i < 0)
38 return -1;
39 data = X509_NAME_ENTRY_get_data(X509_NAME_get_entry(name, i));
40 if (buf == NULL)
41 return data->length;
42 if (len <= 0)
43 return 0;
44 i = (data->length > (len - 1)) ? (len - 1) : data->length;
45 memcpy(buf, data->data, i);
46 buf[i] = '\0';
47 return i;
48 }
49
X509_NAME_entry_count(const X509_NAME * name)50 int X509_NAME_entry_count(const X509_NAME *name)
51 {
52 if (name == NULL)
53 return 0;
54 return sk_X509_NAME_ENTRY_num(name->entries);
55 }
56
X509_NAME_get_index_by_NID(const X509_NAME * name,int nid,int lastpos)57 int X509_NAME_get_index_by_NID(const X509_NAME *name, int nid, int lastpos)
58 {
59 ASN1_OBJECT *obj;
60
61 obj = OBJ_nid2obj(nid);
62 if (obj == NULL)
63 return -2;
64 return X509_NAME_get_index_by_OBJ(name, obj, lastpos);
65 }
66
67 /* NOTE: you should be passing -1, not 0 as lastpos */
X509_NAME_get_index_by_OBJ(const X509_NAME * name,const ASN1_OBJECT * obj,int lastpos)68 int X509_NAME_get_index_by_OBJ(const X509_NAME *name, const ASN1_OBJECT *obj,
69 int lastpos)
70 {
71 int n;
72 X509_NAME_ENTRY *ne;
73 STACK_OF(X509_NAME_ENTRY) *sk;
74
75 if (name == NULL)
76 return -1;
77 if (lastpos < 0)
78 lastpos = -1;
79 sk = name->entries;
80 n = sk_X509_NAME_ENTRY_num(sk);
81 for (lastpos++; lastpos < n; lastpos++) {
82 ne = sk_X509_NAME_ENTRY_value(sk, lastpos);
83 if (OBJ_cmp(ne->object, obj) == 0)
84 return lastpos;
85 }
86 return -1;
87 }
88
X509_NAME_get_entry(const X509_NAME * name,int loc)89 X509_NAME_ENTRY *X509_NAME_get_entry(const X509_NAME *name, int loc)
90 {
91 if (name == NULL || sk_X509_NAME_ENTRY_num(name->entries) <= loc
92 || loc < 0)
93 return NULL;
94
95 return sk_X509_NAME_ENTRY_value(name->entries, loc);
96 }
97
X509_NAME_delete_entry(X509_NAME * name,int loc)98 X509_NAME_ENTRY *X509_NAME_delete_entry(X509_NAME *name, int loc)
99 {
100 X509_NAME_ENTRY *ret;
101 int i, n, set_prev, set_next;
102 STACK_OF(X509_NAME_ENTRY) *sk;
103
104 if (name == NULL || sk_X509_NAME_ENTRY_num(name->entries) <= loc
105 || loc < 0)
106 return NULL;
107
108 sk = name->entries;
109 ret = sk_X509_NAME_ENTRY_delete(sk, loc);
110 n = sk_X509_NAME_ENTRY_num(sk);
111 name->modified = 1;
112 if (loc == n)
113 return ret;
114
115 /* else we need to fixup the set field */
116 if (loc != 0)
117 set_prev = (sk_X509_NAME_ENTRY_value(sk, loc - 1))->set;
118 else
119 set_prev = ret->set - 1;
120 set_next = sk_X509_NAME_ENTRY_value(sk, loc)->set;
121
122 /*-
123 * set_prev is the previous set
124 * set is the current set
125 * set_next is the following
126 * prev 1 1 1 1 1 1 1 1
127 * set 1 1 2 2
128 * next 1 1 2 2 2 2 3 2
129 * so basically only if prev and next differ by 2, then
130 * re-number down by 1
131 */
132 if (set_prev + 1 < set_next)
133 for (i = loc; i < n; i++)
134 sk_X509_NAME_ENTRY_value(sk, i)->set--;
135 return ret;
136 }
137
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)138 int X509_NAME_add_entry_by_OBJ(X509_NAME *name, const ASN1_OBJECT *obj, int type,
139 const unsigned char *bytes, int len, int loc,
140 int set)
141 {
142 X509_NAME_ENTRY *ne;
143 int ret;
144
145 ne = X509_NAME_ENTRY_create_by_OBJ(NULL, obj, type, bytes, len);
146 if (!ne)
147 return 0;
148 ret = X509_NAME_add_entry(name, ne, loc, set);
149 X509_NAME_ENTRY_free(ne);
150 return ret;
151 }
152
X509_NAME_add_entry_by_NID(X509_NAME * name,int nid,int type,const unsigned char * bytes,int len,int loc,int set)153 int X509_NAME_add_entry_by_NID(X509_NAME *name, int nid, int type,
154 const unsigned char *bytes, int len, int loc,
155 int set)
156 {
157 X509_NAME_ENTRY *ne;
158 int ret;
159 ne = X509_NAME_ENTRY_create_by_NID(NULL, nid, type, bytes, len);
160 if (!ne)
161 return 0;
162 ret = X509_NAME_add_entry(name, ne, loc, set);
163 X509_NAME_ENTRY_free(ne);
164 return ret;
165 }
166
X509_NAME_add_entry_by_txt(X509_NAME * name,const char * field,int type,const unsigned char * bytes,int len,int loc,int set)167 int X509_NAME_add_entry_by_txt(X509_NAME *name, const char *field, int type,
168 const unsigned char *bytes, int len, int loc,
169 int set)
170 {
171 X509_NAME_ENTRY *ne;
172 int ret;
173 ne = X509_NAME_ENTRY_create_by_txt(NULL, field, type, bytes, len);
174 if (!ne)
175 return 0;
176 ret = X509_NAME_add_entry(name, ne, loc, set);
177 X509_NAME_ENTRY_free(ne);
178 return ret;
179 }
180
181 /*
182 * if set is -1, append to previous set, 0 'a new one', and 1, prepend to the
183 * guy we are about to stomp on.
184 */
X509_NAME_add_entry(X509_NAME * name,const X509_NAME_ENTRY * ne,int loc,int set)185 int X509_NAME_add_entry(X509_NAME *name, const X509_NAME_ENTRY *ne, int loc,
186 int set)
187 {
188 X509_NAME_ENTRY *new_name = NULL;
189 int n, i, inc;
190 STACK_OF(X509_NAME_ENTRY) *sk;
191
192 if (name == NULL)
193 return 0;
194 sk = name->entries;
195 n = sk_X509_NAME_ENTRY_num(sk);
196 if (loc > n)
197 loc = n;
198 else if (loc < 0)
199 loc = n;
200 inc = (set == 0);
201 name->modified = 1;
202
203 if (set == -1) {
204 if (loc == 0) {
205 set = 0;
206 inc = 1;
207 } else {
208 set = sk_X509_NAME_ENTRY_value(sk, loc - 1)->set;
209 }
210 } else { /* if (set >= 0) */
211
212 if (loc >= n) {
213 if (loc != 0)
214 set = sk_X509_NAME_ENTRY_value(sk, loc - 1)->set + 1;
215 else
216 set = 0;
217 } else
218 set = sk_X509_NAME_ENTRY_value(sk, loc)->set;
219 }
220
221 if ((new_name = X509_NAME_ENTRY_dup(ne)) == NULL)
222 goto err;
223 new_name->set = set;
224 if (!sk_X509_NAME_ENTRY_insert(sk, new_name, loc)) {
225 ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE);
226 goto err;
227 }
228 if (inc) {
229 n = sk_X509_NAME_ENTRY_num(sk);
230 for (i = loc + 1; i < n; i++)
231 sk_X509_NAME_ENTRY_value(sk, i)->set += 1;
232 }
233 return 1;
234 err:
235 X509_NAME_ENTRY_free(new_name);
236 return 0;
237 }
238
X509_NAME_ENTRY_create_by_txt(X509_NAME_ENTRY ** ne,const char * field,int type,const unsigned char * bytes,int len)239 X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_txt(X509_NAME_ENTRY **ne,
240 const char *field, int type,
241 const unsigned char *bytes,
242 int len)
243 {
244 ASN1_OBJECT *obj;
245 X509_NAME_ENTRY *nentry;
246
247 obj = OBJ_txt2obj(field, 0);
248 if (obj == NULL) {
249 ERR_raise_data(ERR_LIB_X509, X509_R_INVALID_FIELD_NAME,
250 "name=%s", field);
251 return NULL;
252 }
253 nentry = X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len);
254 ASN1_OBJECT_free(obj);
255 return nentry;
256 }
257
X509_NAME_ENTRY_create_by_NID(X509_NAME_ENTRY ** ne,int nid,int type,const unsigned char * bytes,int len)258 X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_NID(X509_NAME_ENTRY **ne, int nid,
259 int type,
260 const unsigned char *bytes,
261 int len)
262 {
263 ASN1_OBJECT *obj;
264 X509_NAME_ENTRY *nentry;
265
266 obj = OBJ_nid2obj(nid);
267 if (obj == NULL) {
268 ERR_raise(ERR_LIB_X509, X509_R_UNKNOWN_NID);
269 return NULL;
270 }
271 nentry = X509_NAME_ENTRY_create_by_OBJ(ne, obj, type, bytes, len);
272 ASN1_OBJECT_free(obj);
273 return nentry;
274 }
275
X509_NAME_ENTRY_create_by_OBJ(X509_NAME_ENTRY ** ne,const ASN1_OBJECT * obj,int type,const unsigned char * bytes,int len)276 X509_NAME_ENTRY *X509_NAME_ENTRY_create_by_OBJ(X509_NAME_ENTRY **ne,
277 const ASN1_OBJECT *obj, int type,
278 const unsigned char *bytes,
279 int len)
280 {
281 X509_NAME_ENTRY *ret;
282
283 if ((ne == NULL) || (*ne == NULL)) {
284 if ((ret = X509_NAME_ENTRY_new()) == NULL)
285 return NULL;
286 } else
287 ret = *ne;
288
289 if (!X509_NAME_ENTRY_set_object(ret, obj))
290 goto err;
291 if (!X509_NAME_ENTRY_set_data(ret, type, bytes, len))
292 goto err;
293
294 if ((ne != NULL) && (*ne == NULL))
295 *ne = ret;
296 return ret;
297 err:
298 if ((ne == NULL) || (ret != *ne))
299 X509_NAME_ENTRY_free(ret);
300 return NULL;
301 }
302
X509_NAME_ENTRY_set_object(X509_NAME_ENTRY * ne,const ASN1_OBJECT * obj)303 int X509_NAME_ENTRY_set_object(X509_NAME_ENTRY *ne, const ASN1_OBJECT *obj)
304 {
305 if ((ne == NULL) || (obj == NULL)) {
306 ERR_raise(ERR_LIB_X509, ERR_R_PASSED_NULL_PARAMETER);
307 return 0;
308 }
309 ASN1_OBJECT_free(ne->object);
310 ne->object = OBJ_dup(obj);
311 return ((ne->object == NULL) ? 0 : 1);
312 }
313
X509_NAME_ENTRY_set_data(X509_NAME_ENTRY * ne,int type,const unsigned char * bytes,int len)314 int X509_NAME_ENTRY_set_data(X509_NAME_ENTRY *ne, int type,
315 const unsigned char *bytes, int len)
316 {
317 int i;
318
319 if ((ne == NULL) || ((bytes == NULL) && (len != 0)))
320 return 0;
321 if ((type > 0) && (type & MBSTRING_FLAG))
322 return ASN1_STRING_set_by_NID(&ne->value, bytes,
323 len, type,
324 OBJ_obj2nid(ne->object)) ? 1 : 0;
325 if (len < 0)
326 len = strlen((const char *)bytes);
327 i = ASN1_STRING_set(ne->value, bytes, len);
328 if (!i)
329 return 0;
330 if (type != V_ASN1_UNDEF) {
331 if (type == V_ASN1_APP_CHOOSE)
332 ne->value->type = ASN1_PRINTABLE_type(bytes, len);
333 else
334 ne->value->type = type;
335 }
336 return 1;
337 }
338
X509_NAME_ENTRY_get_object(const X509_NAME_ENTRY * ne)339 ASN1_OBJECT *X509_NAME_ENTRY_get_object(const X509_NAME_ENTRY *ne)
340 {
341 if (ne == NULL)
342 return NULL;
343 return ne->object;
344 }
345
X509_NAME_ENTRY_get_data(const X509_NAME_ENTRY * ne)346 ASN1_STRING *X509_NAME_ENTRY_get_data(const X509_NAME_ENTRY *ne)
347 {
348 if (ne == NULL)
349 return NULL;
350 return ne->value;
351 }
352
X509_NAME_ENTRY_set(const X509_NAME_ENTRY * ne)353 int X509_NAME_ENTRY_set(const X509_NAME_ENTRY *ne)
354 {
355 return ne->set;
356 }
357