1 /* crypto/x509/x_name.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
61 #include "internal/cryptlib.h"
62 #include <openssl/asn1t.h>
63 #include <openssl/x509.h>
64 #include "internal/x509_int.h"
65 #include "internal/asn1_int.h"
68 static int x509_name_ex_d2i(ASN1_VALUE **val,
69 const unsigned char **in, long len,
71 int tag, int aclass, char opt, ASN1_TLC *ctx);
73 static int x509_name_ex_i2d(ASN1_VALUE **val, unsigned char **out,
74 const ASN1_ITEM *it, int tag, int aclass);
75 static int x509_name_ex_new(ASN1_VALUE **val, const ASN1_ITEM *it);
76 static void x509_name_ex_free(ASN1_VALUE **val, const ASN1_ITEM *it);
78 static int x509_name_encode(X509_NAME *a);
79 static int x509_name_canon(X509_NAME *a);
80 static int asn1_string_canon(ASN1_STRING *out, ASN1_STRING *in);
81 static int i2d_name_canon(STACK_OF(STACK_OF_X509_NAME_ENTRY) * intname,
84 static int x509_name_ex_print(BIO *out, ASN1_VALUE **pval,
86 const char *fname, const ASN1_PCTX *pctx);
88 ASN1_SEQUENCE(X509_NAME_ENTRY) = {
89 ASN1_SIMPLE(X509_NAME_ENTRY, object, ASN1_OBJECT),
90 ASN1_SIMPLE(X509_NAME_ENTRY, value, ASN1_PRINTABLE)
91 } ASN1_SEQUENCE_END(X509_NAME_ENTRY)
93 IMPLEMENT_ASN1_FUNCTIONS(X509_NAME_ENTRY)
94 IMPLEMENT_ASN1_DUP_FUNCTION(X509_NAME_ENTRY)
97 * For the "Name" type we need a SEQUENCE OF { SET OF X509_NAME_ENTRY } so
98 * declare two template wrappers for this
101 ASN1_ITEM_TEMPLATE(X509_NAME_ENTRIES) =
102 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_OF, 0, RDNS, X509_NAME_ENTRY)
103 static_ASN1_ITEM_TEMPLATE_END(X509_NAME_ENTRIES)
105 ASN1_ITEM_TEMPLATE(X509_NAME_INTERNAL) =
106 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, Name, X509_NAME_ENTRIES)
107 static_ASN1_ITEM_TEMPLATE_END(X509_NAME_INTERNAL)
110 * Normally that's where it would end: we'd have two nested STACK structures
111 * representing the ASN1. Unfortunately X509_NAME uses a completely different
112 * form and caches encodings so we have to process the internal form and
113 * convert to the external form.
116 static const ASN1_EXTERN_FUNCS x509_name_ff = {
120 0, /* Default clear behaviour is OK */
126 IMPLEMENT_EXTERN_ASN1(X509_NAME, V_ASN1_SEQUENCE, x509_name_ff)
128 IMPLEMENT_ASN1_FUNCTIONS(X509_NAME)
130 IMPLEMENT_ASN1_DUP_FUNCTION(X509_NAME)
132 static int x509_name_ex_new(ASN1_VALUE **val, const ASN1_ITEM *it)
134 X509_NAME *ret = OPENSSL_zalloc(sizeof(*ret));
138 if ((ret->entries = sk_X509_NAME_ENTRY_new_null()) == NULL)
140 if ((ret->bytes = BUF_MEM_new()) == NULL)
143 *val = (ASN1_VALUE *)ret;
147 ASN1err(ASN1_F_X509_NAME_EX_NEW, ERR_R_MALLOC_FAILURE);
149 sk_X509_NAME_ENTRY_free(ret->entries);
155 static void x509_name_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
161 a = (X509_NAME *)*pval;
163 BUF_MEM_free(a->bytes);
164 sk_X509_NAME_ENTRY_pop_free(a->entries, X509_NAME_ENTRY_free);
165 OPENSSL_free(a->canon_enc);
170 static int x509_name_ex_d2i(ASN1_VALUE **val,
171 const unsigned char **in, long len,
172 const ASN1_ITEM *it, int tag, int aclass,
173 char opt, ASN1_TLC *ctx)
175 const unsigned char *p = *in, *q;
177 STACK_OF(STACK_OF_X509_NAME_ENTRY) *s;
189 STACK_OF(X509_NAME_ENTRY) *entries;
190 X509_NAME_ENTRY *entry;
193 /* Get internal representation of Name */
194 ret = ASN1_item_ex_d2i(&intname.a,
195 &p, len, ASN1_ITEM_rptr(X509_NAME_INTERNAL),
196 tag, aclass, opt, ctx);
202 x509_name_ex_free(val, NULL);
203 if (!x509_name_ex_new(&nm.a, NULL))
205 /* We've decoded it: now cache encoding */
206 if (!BUF_MEM_grow(nm.x->bytes, p - q))
208 memcpy(nm.x->bytes->data, q, p - q);
210 /* Convert internal representation to X509_NAME structure */
211 for (i = 0; i < sk_STACK_OF_X509_NAME_ENTRY_num(intname.s); i++) {
212 entries = sk_STACK_OF_X509_NAME_ENTRY_value(intname.s, i);
213 for (j = 0; j < sk_X509_NAME_ENTRY_num(entries); j++) {
214 entry = sk_X509_NAME_ENTRY_value(entries, j);
216 if (!sk_X509_NAME_ENTRY_push(nm.x->entries, entry))
219 sk_X509_NAME_ENTRY_free(entries);
221 sk_STACK_OF_X509_NAME_ENTRY_free(intname.s);
222 ret = x509_name_canon(nm.x);
230 X509_NAME_free(nm.x);
231 ASN1err(ASN1_F_X509_NAME_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
235 static int x509_name_ex_i2d(ASN1_VALUE **val, unsigned char **out,
236 const ASN1_ITEM *it, int tag, int aclass)
239 X509_NAME *a = (X509_NAME *)*val;
241 ret = x509_name_encode(a);
244 ret = x509_name_canon(a);
248 ret = a->bytes->length;
250 memcpy(*out, a->bytes->data, ret);
256 static void local_sk_X509_NAME_ENTRY_free(STACK_OF(X509_NAME_ENTRY) *ne)
258 sk_X509_NAME_ENTRY_free(ne);
261 static void local_sk_X509_NAME_ENTRY_pop_free(STACK_OF(X509_NAME_ENTRY) *ne)
263 sk_X509_NAME_ENTRY_pop_free(ne, X509_NAME_ENTRY_free);
266 static int x509_name_encode(X509_NAME *a)
269 STACK_OF(STACK_OF_X509_NAME_ENTRY) *s;
276 STACK_OF(X509_NAME_ENTRY) *entries = NULL;
277 X509_NAME_ENTRY *entry;
279 intname.s = sk_STACK_OF_X509_NAME_ENTRY_new_null();
282 for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {
283 entry = sk_X509_NAME_ENTRY_value(a->entries, i);
284 if (entry->set != set) {
285 entries = sk_X509_NAME_ENTRY_new_null();
288 if (!sk_STACK_OF_X509_NAME_ENTRY_push(intname.s, entries))
292 if (!sk_X509_NAME_ENTRY_push(entries, entry))
295 len = ASN1_item_ex_i2d(&intname.a, NULL,
296 ASN1_ITEM_rptr(X509_NAME_INTERNAL), -1, -1);
297 if (!BUF_MEM_grow(a->bytes, len))
299 p = (unsigned char *)a->bytes->data;
300 ASN1_item_ex_i2d(&intname.a,
301 &p, ASN1_ITEM_rptr(X509_NAME_INTERNAL), -1, -1);
302 sk_STACK_OF_X509_NAME_ENTRY_pop_free(intname.s,
303 local_sk_X509_NAME_ENTRY_free);
307 sk_STACK_OF_X509_NAME_ENTRY_pop_free(intname.s,
308 local_sk_X509_NAME_ENTRY_free);
309 ASN1err(ASN1_F_X509_NAME_ENCODE, ERR_R_MALLOC_FAILURE);
313 static int x509_name_ex_print(BIO *out, ASN1_VALUE **pval,
315 const char *fname, const ASN1_PCTX *pctx)
317 if (X509_NAME_print_ex(out, (X509_NAME *)*pval,
318 indent, pctx->nm_flags) <= 0)
324 * This function generates the canonical encoding of the Name structure. In
325 * it all strings are converted to UTF8, leading, trailing and multiple
326 * spaces collapsed, converted to lower case and the leading SEQUENCE header
327 * removed. In future we could also normalize the UTF8 too. By doing this
328 * comparison of Name structures can be rapidly perfomed by just using
329 * memcmp() of the canonical encoding. By omitting the leading SEQUENCE name
330 * constraints of type dirName can also be checked with a simple memcmp().
333 static int x509_name_canon(X509_NAME *a)
336 STACK_OF(STACK_OF_X509_NAME_ENTRY) *intname = NULL;
337 STACK_OF(X509_NAME_ENTRY) *entries = NULL;
338 X509_NAME_ENTRY *entry, *tmpentry = NULL;
339 int i, set = -1, ret = 0;
341 OPENSSL_free(a->canon_enc);
343 /* Special case: empty X509_NAME => null encoding */
344 if (sk_X509_NAME_ENTRY_num(a->entries) == 0) {
348 intname = sk_STACK_OF_X509_NAME_ENTRY_new_null();
351 for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {
352 entry = sk_X509_NAME_ENTRY_value(a->entries, i);
353 if (entry->set != set) {
354 entries = sk_X509_NAME_ENTRY_new_null();
357 if (!sk_STACK_OF_X509_NAME_ENTRY_push(intname, entries))
361 tmpentry = X509_NAME_ENTRY_new();
362 if (tmpentry == NULL)
364 tmpentry->object = OBJ_dup(entry->object);
365 if (!asn1_string_canon(tmpentry->value, entry->value))
367 if (!sk_X509_NAME_ENTRY_push(entries, tmpentry))
372 /* Finally generate encoding */
374 a->canon_enclen = i2d_name_canon(intname, NULL);
376 p = OPENSSL_malloc(a->canon_enclen);
383 i2d_name_canon(intname, &p);
389 X509_NAME_ENTRY_free(tmpentry);
390 sk_STACK_OF_X509_NAME_ENTRY_pop_free(intname,
391 local_sk_X509_NAME_ENTRY_pop_free);
395 /* Bitmap of all the types of string that will be canonicalized. */
397 #define ASN1_MASK_CANON \
398 (B_ASN1_UTF8STRING | B_ASN1_BMPSTRING | B_ASN1_UNIVERSALSTRING \
399 | B_ASN1_PRINTABLESTRING | B_ASN1_T61STRING | B_ASN1_IA5STRING \
400 | B_ASN1_VISIBLESTRING)
402 static int asn1_string_canon(ASN1_STRING *out, ASN1_STRING *in)
404 unsigned char *to, *from;
407 /* If type not in bitmask just copy string across */
408 if (!(ASN1_tag2bit(in->type) & ASN1_MASK_CANON)) {
409 if (!ASN1_STRING_copy(out, in))
414 out->type = V_ASN1_UTF8STRING;
415 out->length = ASN1_STRING_to_UTF8(&out->data, in);
416 if (out->length == -1)
425 * Convert string in place to canonical form. Ultimately we may need to
426 * handle a wider range of characters but for now ignore anything with
427 * MSB set and rely on the isspace() and tolower() functions.
430 /* Ignore leading spaces */
431 while ((len > 0) && !(*from & 0x80) && isspace(*from)) {
438 /* Ignore trailing spaces */
439 while ((len > 0) && !(*to & 0x80) && isspace(*to)) {
448 /* If MSB set just copy across */
453 /* Collapse multiple spaces */
454 else if (isspace(*from)) {
455 /* Copy one space across */
458 * Ignore subsequent spaces. Note: don't need to check len here
459 * because we know the last character is a non-space so we can't
466 while (!(*from & 0x80) && isspace(*from));
468 *to++ = tolower(*from);
474 out->length = to - out->data;
480 static int i2d_name_canon(STACK_OF(STACK_OF_X509_NAME_ENTRY) * _intname,
485 STACK_OF(ASN1_VALUE) *intname = (STACK_OF(ASN1_VALUE) *)_intname;
488 for (i = 0; i < sk_ASN1_VALUE_num(intname); i++) {
489 v = sk_ASN1_VALUE_value(intname, i);
490 ltmp = ASN1_item_ex_i2d(&v, in,
491 ASN1_ITEM_rptr(X509_NAME_ENTRIES), -1, -1);
499 int X509_NAME_set(X509_NAME **xn, X509_NAME *name)
507 in = X509_NAME_dup(name);
513 return (*xn != NULL);
516 int X509_NAME_print(BIO *bp, X509_NAME *name, int obase)
523 b = X509_NAME_oneline(name, NULL, 0);
530 s = b + 1; /* skip the first slash */
534 #ifndef CHARSET_EBCDIC
536 ((s[1] >= 'A') && (s[1] <= 'Z') && ((s[2] == '=') ||
543 (isupper(s[1]) && ((s[2] == '=') ||
544 (isupper(s[2]) && (s[3] == '='))
549 if (BIO_write(bp, c, i) != i)
551 c = s + 1; /* skip following slash */
553 if (BIO_write(bp, ", ", 2) != 2)
567 X509err(X509_F_X509_NAME_PRINT, ERR_R_BUF_LIB);