1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
60 #include "internal/cryptlib.h"
61 #include <openssl/asn1t.h>
62 #include <openssl/x509.h>
63 #include "internal/x509_int.h"
64 #include "internal/asn1_int.h"
67 static int x509_name_ex_d2i(ASN1_VALUE **val,
68 const unsigned char **in, long len,
70 int tag, int aclass, char opt, ASN1_TLC *ctx);
72 static int x509_name_ex_i2d(ASN1_VALUE **val, unsigned char **out,
73 const ASN1_ITEM *it, int tag, int aclass);
74 static int x509_name_ex_new(ASN1_VALUE **val, const ASN1_ITEM *it);
75 static void x509_name_ex_free(ASN1_VALUE **val, const ASN1_ITEM *it);
77 static int x509_name_encode(X509_NAME *a);
78 static int x509_name_canon(X509_NAME *a);
79 static int asn1_string_canon(ASN1_STRING *out, ASN1_STRING *in);
80 static int i2d_name_canon(STACK_OF(STACK_OF_X509_NAME_ENTRY) * intname,
83 static int x509_name_ex_print(BIO *out, ASN1_VALUE **pval,
85 const char *fname, const ASN1_PCTX *pctx);
87 ASN1_SEQUENCE(X509_NAME_ENTRY) = {
88 ASN1_SIMPLE(X509_NAME_ENTRY, object, ASN1_OBJECT),
89 ASN1_SIMPLE(X509_NAME_ENTRY, value, ASN1_PRINTABLE)
90 } ASN1_SEQUENCE_END(X509_NAME_ENTRY)
92 IMPLEMENT_ASN1_FUNCTIONS(X509_NAME_ENTRY)
93 IMPLEMENT_ASN1_DUP_FUNCTION(X509_NAME_ENTRY)
96 * For the "Name" type we need a SEQUENCE OF { SET OF X509_NAME_ENTRY } so
97 * declare two template wrappers for this
100 ASN1_ITEM_TEMPLATE(X509_NAME_ENTRIES) =
101 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_OF, 0, RDNS, X509_NAME_ENTRY)
102 static_ASN1_ITEM_TEMPLATE_END(X509_NAME_ENTRIES)
104 ASN1_ITEM_TEMPLATE(X509_NAME_INTERNAL) =
105 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, Name, X509_NAME_ENTRIES)
106 static_ASN1_ITEM_TEMPLATE_END(X509_NAME_INTERNAL)
109 * Normally that's where it would end: we'd have two nested STACK structures
110 * representing the ASN1. Unfortunately X509_NAME uses a completely different
111 * form and caches encodings so we have to process the internal form and
112 * convert to the external form.
115 static const ASN1_EXTERN_FUNCS x509_name_ff = {
119 0, /* Default clear behaviour is OK */
125 IMPLEMENT_EXTERN_ASN1(X509_NAME, V_ASN1_SEQUENCE, x509_name_ff)
127 IMPLEMENT_ASN1_FUNCTIONS(X509_NAME)
129 IMPLEMENT_ASN1_DUP_FUNCTION(X509_NAME)
131 static int x509_name_ex_new(ASN1_VALUE **val, const ASN1_ITEM *it)
133 X509_NAME *ret = OPENSSL_zalloc(sizeof(*ret));
137 if ((ret->entries = sk_X509_NAME_ENTRY_new_null()) == NULL)
139 if ((ret->bytes = BUF_MEM_new()) == NULL)
142 *val = (ASN1_VALUE *)ret;
146 ASN1err(ASN1_F_X509_NAME_EX_NEW, ERR_R_MALLOC_FAILURE);
148 sk_X509_NAME_ENTRY_free(ret->entries);
154 static void x509_name_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
160 a = (X509_NAME *)*pval;
162 BUF_MEM_free(a->bytes);
163 sk_X509_NAME_ENTRY_pop_free(a->entries, X509_NAME_ENTRY_free);
164 OPENSSL_free(a->canon_enc);
169 static int x509_name_ex_d2i(ASN1_VALUE **val,
170 const unsigned char **in, long len,
171 const ASN1_ITEM *it, int tag, int aclass,
172 char opt, ASN1_TLC *ctx)
174 const unsigned char *p = *in, *q;
176 STACK_OF(STACK_OF_X509_NAME_ENTRY) *s;
188 STACK_OF(X509_NAME_ENTRY) *entries;
189 X509_NAME_ENTRY *entry;
192 /* Get internal representation of Name */
193 ret = ASN1_item_ex_d2i(&intname.a,
194 &p, len, ASN1_ITEM_rptr(X509_NAME_INTERNAL),
195 tag, aclass, opt, ctx);
201 x509_name_ex_free(val, NULL);
202 if (!x509_name_ex_new(&nm.a, NULL))
204 /* We've decoded it: now cache encoding */
205 if (!BUF_MEM_grow(nm.x->bytes, p - q))
207 memcpy(nm.x->bytes->data, q, p - q);
209 /* Convert internal representation to X509_NAME structure */
210 for (i = 0; i < sk_STACK_OF_X509_NAME_ENTRY_num(intname.s); i++) {
211 entries = sk_STACK_OF_X509_NAME_ENTRY_value(intname.s, i);
212 for (j = 0; j < sk_X509_NAME_ENTRY_num(entries); j++) {
213 entry = sk_X509_NAME_ENTRY_value(entries, j);
215 if (!sk_X509_NAME_ENTRY_push(nm.x->entries, entry))
218 sk_X509_NAME_ENTRY_free(entries);
220 sk_STACK_OF_X509_NAME_ENTRY_free(intname.s);
221 ret = x509_name_canon(nm.x);
229 X509_NAME_free(nm.x);
230 ASN1err(ASN1_F_X509_NAME_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
234 static int x509_name_ex_i2d(ASN1_VALUE **val, unsigned char **out,
235 const ASN1_ITEM *it, int tag, int aclass)
238 X509_NAME *a = (X509_NAME *)*val;
240 ret = x509_name_encode(a);
243 ret = x509_name_canon(a);
247 ret = a->bytes->length;
249 memcpy(*out, a->bytes->data, ret);
255 static void local_sk_X509_NAME_ENTRY_free(STACK_OF(X509_NAME_ENTRY) *ne)
257 sk_X509_NAME_ENTRY_free(ne);
260 static void local_sk_X509_NAME_ENTRY_pop_free(STACK_OF(X509_NAME_ENTRY) *ne)
262 sk_X509_NAME_ENTRY_pop_free(ne, X509_NAME_ENTRY_free);
265 static int x509_name_encode(X509_NAME *a)
268 STACK_OF(STACK_OF_X509_NAME_ENTRY) *s;
275 STACK_OF(X509_NAME_ENTRY) *entries = NULL;
276 X509_NAME_ENTRY *entry;
278 intname.s = sk_STACK_OF_X509_NAME_ENTRY_new_null();
281 for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {
282 entry = sk_X509_NAME_ENTRY_value(a->entries, i);
283 if (entry->set != set) {
284 entries = sk_X509_NAME_ENTRY_new_null();
287 if (!sk_STACK_OF_X509_NAME_ENTRY_push(intname.s, entries))
291 if (!sk_X509_NAME_ENTRY_push(entries, entry))
294 len = ASN1_item_ex_i2d(&intname.a, NULL,
295 ASN1_ITEM_rptr(X509_NAME_INTERNAL), -1, -1);
296 if (!BUF_MEM_grow(a->bytes, len))
298 p = (unsigned char *)a->bytes->data;
299 ASN1_item_ex_i2d(&intname.a,
300 &p, ASN1_ITEM_rptr(X509_NAME_INTERNAL), -1, -1);
301 sk_STACK_OF_X509_NAME_ENTRY_pop_free(intname.s,
302 local_sk_X509_NAME_ENTRY_free);
306 sk_STACK_OF_X509_NAME_ENTRY_pop_free(intname.s,
307 local_sk_X509_NAME_ENTRY_free);
308 ASN1err(ASN1_F_X509_NAME_ENCODE, ERR_R_MALLOC_FAILURE);
312 static int x509_name_ex_print(BIO *out, ASN1_VALUE **pval,
314 const char *fname, const ASN1_PCTX *pctx)
316 if (X509_NAME_print_ex(out, (X509_NAME *)*pval,
317 indent, pctx->nm_flags) <= 0)
323 * This function generates the canonical encoding of the Name structure. In
324 * it all strings are converted to UTF8, leading, trailing and multiple
325 * spaces collapsed, converted to lower case and the leading SEQUENCE header
326 * removed. In future we could also normalize the UTF8 too. By doing this
327 * comparison of Name structures can be rapidly performed by just using
328 * memcmp() of the canonical encoding. By omitting the leading SEQUENCE name
329 * constraints of type dirName can also be checked with a simple memcmp().
332 static int x509_name_canon(X509_NAME *a)
335 STACK_OF(STACK_OF_X509_NAME_ENTRY) *intname = NULL;
336 STACK_OF(X509_NAME_ENTRY) *entries = NULL;
337 X509_NAME_ENTRY *entry, *tmpentry = NULL;
338 int i, set = -1, ret = 0;
340 OPENSSL_free(a->canon_enc);
342 /* Special case: empty X509_NAME => null encoding */
343 if (sk_X509_NAME_ENTRY_num(a->entries) == 0) {
347 intname = sk_STACK_OF_X509_NAME_ENTRY_new_null();
350 for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {
351 entry = sk_X509_NAME_ENTRY_value(a->entries, i);
352 if (entry->set != set) {
353 entries = sk_X509_NAME_ENTRY_new_null();
356 if (!sk_STACK_OF_X509_NAME_ENTRY_push(intname, entries))
360 tmpentry = X509_NAME_ENTRY_new();
361 if (tmpentry == NULL)
363 tmpentry->object = OBJ_dup(entry->object);
364 if (!asn1_string_canon(tmpentry->value, entry->value))
366 if (!sk_X509_NAME_ENTRY_push(entries, tmpentry))
371 /* Finally generate encoding */
373 a->canon_enclen = i2d_name_canon(intname, NULL);
375 p = OPENSSL_malloc(a->canon_enclen);
382 i2d_name_canon(intname, &p);
388 X509_NAME_ENTRY_free(tmpentry);
389 sk_STACK_OF_X509_NAME_ENTRY_pop_free(intname,
390 local_sk_X509_NAME_ENTRY_pop_free);
394 /* Bitmap of all the types of string that will be canonicalized. */
396 #define ASN1_MASK_CANON \
397 (B_ASN1_UTF8STRING | B_ASN1_BMPSTRING | B_ASN1_UNIVERSALSTRING \
398 | B_ASN1_PRINTABLESTRING | B_ASN1_T61STRING | B_ASN1_IA5STRING \
399 | B_ASN1_VISIBLESTRING)
401 static int asn1_string_canon(ASN1_STRING *out, ASN1_STRING *in)
403 unsigned char *to, *from;
406 /* If type not in bitmask just copy string across */
407 if (!(ASN1_tag2bit(in->type) & ASN1_MASK_CANON)) {
408 if (!ASN1_STRING_copy(out, in))
413 out->type = V_ASN1_UTF8STRING;
414 out->length = ASN1_STRING_to_UTF8(&out->data, in);
415 if (out->length == -1)
424 * Convert string in place to canonical form. Ultimately we may need to
425 * handle a wider range of characters but for now ignore anything with
426 * MSB set and rely on the isspace() and tolower() functions.
429 /* Ignore leading spaces */
430 while ((len > 0) && !(*from & 0x80) && isspace(*from)) {
437 /* Ignore trailing spaces */
438 while ((len > 0) && !(*to & 0x80) && isspace(*to)) {
447 /* If MSB set just copy across */
452 /* Collapse multiple spaces */
453 else if (isspace(*from)) {
454 /* Copy one space across */
457 * Ignore subsequent spaces. Note: don't need to check len here
458 * because we know the last character is a non-space so we can't
465 while (!(*from & 0x80) && isspace(*from));
467 *to++ = tolower(*from);
473 out->length = to - out->data;
479 static int i2d_name_canon(STACK_OF(STACK_OF_X509_NAME_ENTRY) * _intname,
484 STACK_OF(ASN1_VALUE) *intname = (STACK_OF(ASN1_VALUE) *)_intname;
487 for (i = 0; i < sk_ASN1_VALUE_num(intname); i++) {
488 v = sk_ASN1_VALUE_value(intname, i);
489 ltmp = ASN1_item_ex_i2d(&v, in,
490 ASN1_ITEM_rptr(X509_NAME_ENTRIES), -1, -1);
498 int X509_NAME_set(X509_NAME **xn, X509_NAME *name)
506 in = X509_NAME_dup(name);
512 return (*xn != NULL);
515 int X509_NAME_print(BIO *bp, X509_NAME *name, int obase)
522 b = X509_NAME_oneline(name, NULL, 0);
529 s = b + 1; /* skip the first slash */
533 #ifndef CHARSET_EBCDIC
535 ((s[1] >= 'A') && (s[1] <= 'Z') && ((s[2] == '=') ||
542 (isupper(s[1]) && ((s[2] == '=') ||
543 (isupper(s[2]) && (s[3] == '='))
548 if (BIO_write(bp, c, i) != i)
550 c = s + 1; /* skip following slash */
552 if (BIO_write(bp, ", ", 2) != 2)
566 X509err(X509_F_X509_NAME_PRINT, ERR_R_BUF_LIB);
571 int X509_NAME_get0_der(const unsigned char **pder, size_t *pderlen,
574 /* Make sure encoding is valid */
575 if (i2d_X509_NAME(nm, NULL) <= 0)
578 *pder = (unsigned char *)nm->bytes->data;
580 *pderlen = nm->bytes->length;