1 /* crypto/asn1/x_name.c */
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 "cryptlib.h"
61 #include <openssl/asn1t.h>
62 #include <openssl/x509.h>
63
64 static int x509_name_ex_d2i(ASN1_VALUE **val, const unsigned char **in, long len, const ASN1_ITEM *it,
65 int tag, int aclass, char opt, ASN1_TLC *ctx);
66
67 static int x509_name_ex_i2d(ASN1_VALUE **val, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass);
68 static int x509_name_ex_new(ASN1_VALUE **val, const ASN1_ITEM *it);
69 static void x509_name_ex_free(ASN1_VALUE **val, const ASN1_ITEM *it);
70
71 static int x509_name_encode(X509_NAME *a);
72
73 ASN1_SEQUENCE(X509_NAME_ENTRY) = {
74 ASN1_SIMPLE(X509_NAME_ENTRY, object, ASN1_OBJECT),
75 ASN1_SIMPLE(X509_NAME_ENTRY, value, ASN1_PRINTABLE)
76 } ASN1_SEQUENCE_END(X509_NAME_ENTRY)
77
78 IMPLEMENT_ASN1_FUNCTIONS(X509_NAME_ENTRY)
79 IMPLEMENT_ASN1_DUP_FUNCTION(X509_NAME_ENTRY)
80
81 /* For the "Name" type we need a SEQUENCE OF { SET OF X509_NAME_ENTRY }
82 * so declare two template wrappers for this
83 */
84
85 ASN1_ITEM_TEMPLATE(X509_NAME_ENTRIES) =
86 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_OF, 0, RDNS, X509_NAME_ENTRY)
87 ASN1_ITEM_TEMPLATE_END(X509_NAME_ENTRIES)
88
89 ASN1_ITEM_TEMPLATE(X509_NAME_INTERNAL) =
90 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, Name, X509_NAME_ENTRIES)
91 ASN1_ITEM_TEMPLATE_END(X509_NAME_INTERNAL)
92
93 /* Normally that's where it would end: we'd have two nested STACK structures
94 * representing the ASN1. Unfortunately X509_NAME uses a completely different
95 * form and caches encodings so we have to process the internal form and convert
96 * to the external form.
97 */
98
99 const ASN1_EXTERN_FUNCS x509_name_ff = {
100 NULL,
101 x509_name_ex_new,
102 x509_name_ex_free,
103 0, /* Default clear behaviour is OK */
104 x509_name_ex_d2i,
105 x509_name_ex_i2d
106 };
107
IMPLEMENT_EXTERN_ASN1(X509_NAME,V_ASN1_SEQUENCE,x509_name_ff)108 IMPLEMENT_EXTERN_ASN1(X509_NAME, V_ASN1_SEQUENCE, x509_name_ff)
109
110 IMPLEMENT_ASN1_FUNCTIONS(X509_NAME)
111 IMPLEMENT_ASN1_DUP_FUNCTION(X509_NAME)
112
113 static int x509_name_ex_new(ASN1_VALUE **val, const ASN1_ITEM *it)
114 {
115 X509_NAME *ret = NULL;
116 ret = OPENSSL_malloc(sizeof(X509_NAME));
117 if(!ret) goto memerr;
118 if ((ret->entries=sk_X509_NAME_ENTRY_new_null()) == NULL)
119 goto memerr;
120 if((ret->bytes = BUF_MEM_new()) == NULL) goto memerr;
121 ret->modified=1;
122 *val = (ASN1_VALUE *)ret;
123 return 1;
124
125 memerr:
126 ASN1err(ASN1_F_X509_NAME_EX_NEW, ERR_R_MALLOC_FAILURE);
127 if (ret)
128 {
129 if (ret->entries)
130 sk_X509_NAME_ENTRY_free(ret->entries);
131 OPENSSL_free(ret);
132 }
133 return 0;
134 }
135
x509_name_ex_free(ASN1_VALUE ** pval,const ASN1_ITEM * it)136 static void x509_name_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
137 {
138 X509_NAME *a;
139 if(!pval || !*pval)
140 return;
141 a = (X509_NAME *)*pval;
142
143 BUF_MEM_free(a->bytes);
144 sk_X509_NAME_ENTRY_pop_free(a->entries,X509_NAME_ENTRY_free);
145 OPENSSL_free(a);
146 *pval = NULL;
147 }
148
149 /* Used with sk_pop_free() to free up the internal representation.
150 * NB: we only free the STACK and not its contents because it is
151 * already present in the X509_NAME structure.
152 */
153
sk_internal_free(void * a)154 static void sk_internal_free(void *a)
155 {
156 sk_free(a);
157 }
158
x509_name_ex_d2i(ASN1_VALUE ** val,const unsigned char ** in,long len,const ASN1_ITEM * it,int tag,int aclass,char opt,ASN1_TLC * ctx)159 static int x509_name_ex_d2i(ASN1_VALUE **val, const unsigned char **in, long len, const ASN1_ITEM *it,
160 int tag, int aclass, char opt, ASN1_TLC *ctx)
161 {
162 const unsigned char *p = *in, *q;
163 STACK *intname = NULL, **intname_pp = &intname;
164 int i, j, ret;
165 X509_NAME *nm = NULL, **nm_pp = &nm;
166 STACK_OF(X509_NAME_ENTRY) *entries;
167 X509_NAME_ENTRY *entry;
168 q = p;
169
170 /* Get internal representation of Name */
171 ret = ASN1_item_ex_d2i((ASN1_VALUE **)intname_pp,
172 &p, len, ASN1_ITEM_rptr(X509_NAME_INTERNAL),
173 tag, aclass, opt, ctx);
174
175 if(ret <= 0) return ret;
176
177 if(*val) x509_name_ex_free(val, NULL);
178 if(!x509_name_ex_new((ASN1_VALUE **)nm_pp, NULL)) goto err;
179 /* We've decoded it: now cache encoding */
180 if(!BUF_MEM_grow(nm->bytes, p - q)) goto err;
181 memcpy(nm->bytes->data, q, p - q);
182
183 /* Convert internal representation to X509_NAME structure */
184 for(i = 0; i < sk_num(intname); i++) {
185 entries = (STACK_OF(X509_NAME_ENTRY) *)sk_value(intname, i);
186 for(j = 0; j < sk_X509_NAME_ENTRY_num(entries); j++) {
187 entry = sk_X509_NAME_ENTRY_value(entries, j);
188 entry->set = i;
189 if(!sk_X509_NAME_ENTRY_push(nm->entries, entry))
190 goto err;
191 }
192 sk_X509_NAME_ENTRY_free(entries);
193 }
194 sk_free(intname);
195 nm->modified = 0;
196 *val = (ASN1_VALUE *)nm;
197 *in = p;
198 return ret;
199 err:
200 ASN1err(ASN1_F_X509_NAME_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
201 return 0;
202 }
203
x509_name_ex_i2d(ASN1_VALUE ** val,unsigned char ** out,const ASN1_ITEM * it,int tag,int aclass)204 static int x509_name_ex_i2d(ASN1_VALUE **val, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass)
205 {
206 int ret;
207 X509_NAME *a = (X509_NAME *)*val;
208 if(a->modified) {
209 ret = x509_name_encode((X509_NAME *)a);
210 if(ret < 0) return ret;
211 }
212 ret = a->bytes->length;
213 if(out != NULL) {
214 memcpy(*out,a->bytes->data,ret);
215 *out+=ret;
216 }
217 return ret;
218 }
219
x509_name_encode(X509_NAME * a)220 static int x509_name_encode(X509_NAME *a)
221 {
222 STACK *intname = NULL, **intname_pp = &intname;
223 int len;
224 unsigned char *p;
225 STACK_OF(X509_NAME_ENTRY) *entries = NULL;
226 X509_NAME_ENTRY *entry;
227 int i, set = -1;
228 intname = sk_new_null();
229 if(!intname) goto memerr;
230 for(i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {
231 entry = sk_X509_NAME_ENTRY_value(a->entries, i);
232 if(entry->set != set) {
233 entries = sk_X509_NAME_ENTRY_new_null();
234 if(!entries) goto memerr;
235 if(!sk_push(intname, (char *)entries)) goto memerr;
236 set = entry->set;
237 }
238 if(!sk_X509_NAME_ENTRY_push(entries, entry)) goto memerr;
239 }
240 len = ASN1_item_ex_i2d((ASN1_VALUE **)intname_pp, NULL,
241 ASN1_ITEM_rptr(X509_NAME_INTERNAL), -1, -1);
242 if (!BUF_MEM_grow(a->bytes,len)) goto memerr;
243 p=(unsigned char *)a->bytes->data;
244 ASN1_item_ex_i2d((ASN1_VALUE **)intname_pp,
245 &p, ASN1_ITEM_rptr(X509_NAME_INTERNAL), -1, -1);
246 sk_pop_free(intname, sk_internal_free);
247 a->modified = 0;
248 return len;
249 memerr:
250 sk_pop_free(intname, sk_internal_free);
251 ASN1err(ASN1_F_X509_NAME_ENCODE, ERR_R_MALLOC_FAILURE);
252 return -1;
253 }
254
255
X509_NAME_set(X509_NAME ** xn,X509_NAME * name)256 int X509_NAME_set(X509_NAME **xn, X509_NAME *name)
257 {
258 X509_NAME *in;
259
260 if (!xn || !name) return(0);
261
262 if (*xn != name)
263 {
264 in=X509_NAME_dup(name);
265 if (in != NULL)
266 {
267 X509_NAME_free(*xn);
268 *xn=in;
269 }
270 }
271 return(*xn != NULL);
272 }
273
274 IMPLEMENT_STACK_OF(X509_NAME_ENTRY)
275 IMPLEMENT_ASN1_SET_OF(X509_NAME_ENTRY)
276