ref: bae3ac29fc39bc36329abf1823004c0d79b2f6f0
dir: /sys/src/ape/lib/openssl/crypto/asn1/x_name.c/
/* crypto/asn1/x_name.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#include <stdio.h>
#include "cryptlib.h"
#include <openssl/asn1t.h>
#include <openssl/x509.h>
static int 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);
static int x509_name_ex_i2d(ASN1_VALUE **val, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass);
static int x509_name_ex_new(ASN1_VALUE **val, const ASN1_ITEM *it);
static void x509_name_ex_free(ASN1_VALUE **val, const ASN1_ITEM *it);
static int x509_name_encode(X509_NAME *a);
ASN1_SEQUENCE(X509_NAME_ENTRY) = {
ASN1_SIMPLE(X509_NAME_ENTRY, object, ASN1_OBJECT),
ASN1_SIMPLE(X509_NAME_ENTRY, value, ASN1_PRINTABLE)
} ASN1_SEQUENCE_END(X509_NAME_ENTRY)
IMPLEMENT_ASN1_FUNCTIONS(X509_NAME_ENTRY)
IMPLEMENT_ASN1_DUP_FUNCTION(X509_NAME_ENTRY)
/* For the "Name" type we need a SEQUENCE OF { SET OF X509_NAME_ENTRY }
* so declare two template wrappers for this
*/
ASN1_ITEM_TEMPLATE(X509_NAME_ENTRIES) =
ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_OF, 0, RDNS, X509_NAME_ENTRY)
ASN1_ITEM_TEMPLATE_END(X509_NAME_ENTRIES)
ASN1_ITEM_TEMPLATE(X509_NAME_INTERNAL) =
ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, Name, X509_NAME_ENTRIES)
ASN1_ITEM_TEMPLATE_END(X509_NAME_INTERNAL)
/* Normally that's where it would end: we'd have two nested STACK structures
* representing the ASN1. Unfortunately X509_NAME uses a completely different
* form and caches encodings so we have to process the internal form and convert
* to the external form.
*/
const ASN1_EXTERN_FUNCS x509_name_ff = {
NULL,
x509_name_ex_new,
x509_name_ex_free,
0, /* Default clear behaviour is OK */
x509_name_ex_d2i,
x509_name_ex_i2d
};
IMPLEMENT_EXTERN_ASN1(X509_NAME, V_ASN1_SEQUENCE, x509_name_ff)
IMPLEMENT_ASN1_FUNCTIONS(X509_NAME)
IMPLEMENT_ASN1_DUP_FUNCTION(X509_NAME)
static int x509_name_ex_new(ASN1_VALUE **val, const ASN1_ITEM *it)
{
X509_NAME *ret = NULL;
ret = OPENSSL_malloc(sizeof(X509_NAME));
if(!ret) goto memerr;
if ((ret->entries=sk_X509_NAME_ENTRY_new_null()) == NULL)
goto memerr;
if((ret->bytes = BUF_MEM_new()) == NULL) goto memerr;
ret->modified=1;
*val = (ASN1_VALUE *)ret;
return 1;
memerr:
ASN1err(ASN1_F_X509_NAME_EX_NEW, ERR_R_MALLOC_FAILURE);
if (ret)
{
if (ret->entries)
sk_X509_NAME_ENTRY_free(ret->entries);
OPENSSL_free(ret);
}
return 0;
}
static void x509_name_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
X509_NAME *a;
if(!pval || !*pval)
return;
a = (X509_NAME *)*pval;
BUF_MEM_free(a->bytes);
sk_X509_NAME_ENTRY_pop_free(a->entries,X509_NAME_ENTRY_free);
OPENSSL_free(a);
*pval = NULL;
}
/* Used with sk_pop_free() to free up the internal representation.
* NB: we only free the STACK and not its contents because it is
* already present in the X509_NAME structure.
*/
static void sk_internal_free(void *a)
{
sk_free(a);
}
static int 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)
{
const unsigned char *p = *in, *q;
union { STACK *s; ASN1_VALUE *a; } intname = {NULL};
union { X509_NAME *x; ASN1_VALUE *a; } nm = {NULL};
int i, j, ret;
STACK_OF(X509_NAME_ENTRY) *entries;
X509_NAME_ENTRY *entry;
q = p;
/* Get internal representation of Name */
ret = ASN1_item_ex_d2i(&intname.a,
&p, len, ASN1_ITEM_rptr(X509_NAME_INTERNAL),
tag, aclass, opt, ctx);
if(ret <= 0) return ret;
if(*val) x509_name_ex_free(val, NULL);
if(!x509_name_ex_new(&nm.a, NULL)) goto err;
/* We've decoded it: now cache encoding */
if(!BUF_MEM_grow(nm.x->bytes, p - q)) goto err;
memcpy(nm.x->bytes->data, q, p - q);
/* Convert internal representation to X509_NAME structure */
for(i = 0; i < sk_num(intname.s); i++) {
entries = (STACK_OF(X509_NAME_ENTRY) *)sk_value(intname.s, i);
for(j = 0; j < sk_X509_NAME_ENTRY_num(entries); j++) {
entry = sk_X509_NAME_ENTRY_value(entries, j);
entry->set = i;
if(!sk_X509_NAME_ENTRY_push(nm.x->entries, entry))
goto err;
}
sk_X509_NAME_ENTRY_free(entries);
}
sk_free(intname.s);
nm.x->modified = 0;
*val = nm.a;
*in = p;
return ret;
err:
ASN1err(ASN1_F_X509_NAME_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
return 0;
}
static int x509_name_ex_i2d(ASN1_VALUE **val, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass)
{
int ret;
X509_NAME *a = (X509_NAME *)*val;
if(a->modified) {
ret = x509_name_encode((X509_NAME *)a);
if(ret < 0) return ret;
}
ret = a->bytes->length;
if(out != NULL) {
memcpy(*out,a->bytes->data,ret);
*out+=ret;
}
return ret;
}
static int x509_name_encode(X509_NAME *a)
{
union { STACK *s; ASN1_VALUE *a; } intname = {NULL};
int len;
unsigned char *p;
STACK_OF(X509_NAME_ENTRY) *entries = NULL;
X509_NAME_ENTRY *entry;
int i, set = -1;
intname.s = sk_new_null();
if(!intname.s) goto memerr;
for(i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {
entry = sk_X509_NAME_ENTRY_value(a->entries, i);
if(entry->set != set) {
entries = sk_X509_NAME_ENTRY_new_null();
if(!entries) goto memerr;
if(!sk_push(intname.s, (char *)entries)) goto memerr;
set = entry->set;
}
if(!sk_X509_NAME_ENTRY_push(entries, entry)) goto memerr;
}
len = ASN1_item_ex_i2d(&intname.a, NULL,
ASN1_ITEM_rptr(X509_NAME_INTERNAL), -1, -1);
if (!BUF_MEM_grow(a->bytes,len)) goto memerr;
p=(unsigned char *)a->bytes->data;
ASN1_item_ex_i2d(&intname.a,
&p, ASN1_ITEM_rptr(X509_NAME_INTERNAL), -1, -1);
sk_pop_free(intname.s, sk_internal_free);
a->modified = 0;
return len;
memerr:
sk_pop_free(intname.s, sk_internal_free);
ASN1err(ASN1_F_X509_NAME_ENCODE, ERR_R_MALLOC_FAILURE);
return -1;
}
int X509_NAME_set(X509_NAME **xn, X509_NAME *name)
{
X509_NAME *in;
if (!xn || !name) return(0);
if (*xn != name)
{
in=X509_NAME_dup(name);
if (in != NULL)
{
X509_NAME_free(*xn);
*xn=in;
}
}
return(*xn != NULL);
}
IMPLEMENT_STACK_OF(X509_NAME_ENTRY)
IMPLEMENT_ASN1_SET_OF(X509_NAME_ENTRY)