/* crypto/x509/x509_att.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 <openssl/asn1.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/obj.h>
#include <openssl/stack.h>
#include <openssl/x509.h>
int X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x)
{
return sk_X509_ATTRIBUTE_num(x);
}
int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid,
int lastpos)
{
const ASN1_OBJECT *obj;
obj = OBJ_nid2obj(nid);
if (obj == NULL)
return (-2);
return (X509at_get_attr_by_OBJ(x, obj, lastpos));
}
int X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk,
const ASN1_OBJECT *obj, int lastpos)
{
int n;
X509_ATTRIBUTE *ex;
if (sk == NULL)
return (-1);
lastpos++;
if (lastpos < 0)
lastpos = 0;
n = sk_X509_ATTRIBUTE_num(sk);
for (; lastpos < n; lastpos++) {
ex = sk_X509_ATTRIBUTE_value(sk, lastpos);
if (OBJ_cmp(ex->object, obj) == 0)
return (lastpos);
}
return (-1);
}
X509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc)
{
if (x == NULL || loc < 0 || sk_X509_ATTRIBUTE_num(x) <= (size_t)loc)
return NULL;
else
return sk_X509_ATTRIBUTE_value(x, loc);
}
X509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc)
{
X509_ATTRIBUTE *ret;
if (x == NULL || loc < 0 || sk_X509_ATTRIBUTE_num(x) <= (size_t)loc)
return (NULL);
ret = sk_X509_ATTRIBUTE_delete(x, loc);
return (ret);
}
STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr(STACK_OF(X509_ATTRIBUTE) **x,
X509_ATTRIBUTE *attr)
{
X509_ATTRIBUTE *new_attr = NULL;
STACK_OF(X509_ATTRIBUTE) *sk = NULL;
if (x == NULL) {
OPENSSL_PUT_ERROR(X509, ERR_R_PASSED_NULL_PARAMETER);
goto err2;
}
if (*x == NULL) {
if ((sk = sk_X509_ATTRIBUTE_new_null()) == NULL)
goto err;
} else
sk = *x;
if ((new_attr = X509_ATTRIBUTE_dup(attr)) == NULL)
goto err2;
if (!sk_X509_ATTRIBUTE_push(sk, new_attr))
goto err;
if (*x == NULL)
*x = sk;
return (sk);
err:
OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
err2:
if (new_attr != NULL)
X509_ATTRIBUTE_free(new_attr);
if (sk != NULL)
sk_X509_ATTRIBUTE_free(sk);
return (NULL);
}
STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_OBJ(STACK_OF(X509_ATTRIBUTE)
**x, const ASN1_OBJECT *obj,
int type,
const unsigned char *bytes,
int len)
{
X509_ATTRIBUTE *attr;
STACK_OF(X509_ATTRIBUTE) *ret;
attr = X509_ATTRIBUTE_create_by_OBJ(NULL, obj, type, bytes, len);
if (!attr)
return 0;
ret = X509at_add1_attr(x, attr);
X509_ATTRIBUTE_free(attr);
return ret;
}
STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_NID(STACK_OF(X509_ATTRIBUTE)
**x, int nid, int type,
const unsigned char *bytes,
int len)
{
X509_ATTRIBUTE *attr;
STACK_OF(X509_ATTRIBUTE) *ret;
attr = X509_ATTRIBUTE_create_by_NID(NULL, nid, type, bytes, len);
if (!attr)
return 0;
ret = X509at_add1_attr(x, attr);
X509_ATTRIBUTE_free(attr);
return ret;
}
STACK_OF(X509_ATTRIBUTE) *X509at_add1_attr_by_txt(STACK_OF(X509_ATTRIBUTE)
**x, const char *attrname,
int type,
const unsigned char *bytes,
int len)
{
X509_ATTRIBUTE *attr;
STACK_OF(X509_ATTRIBUTE) *ret;
attr = X509_ATTRIBUTE_create_by_txt(NULL, attrname, type, bytes, len);
if (!attr)
return 0;
ret = X509at_add1_attr(x, attr);
X509_ATTRIBUTE_free(attr);
return ret;
}
void *X509at_get0_data_by_OBJ(STACK_OF(X509_ATTRIBUTE) *x,
ASN1_OBJECT *obj, int lastpos, int type)
{
int i;
X509_ATTRIBUTE *at;
i = X509at_get_attr_by_OBJ(x, obj, lastpos);
if (i == -1)
return NULL;
if ((lastpos <= -2) && (X509at_get_attr_by_OBJ(x, obj, i) != -1))
return NULL;
at = X509at_get_attr(x, i);
if (lastpos <= -3 && (X509_ATTRIBUTE_count(at) != 1))
return NULL;
return X509_ATTRIBUTE_get0_data(at, 0, type, NULL);
}
X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid,
int atrtype, const void *data,
int len)
{
const ASN1_OBJECT *obj;
obj = OBJ_nid2obj(nid);
if (obj == NULL) {
OPENSSL_PUT_ERROR(X509, X509_R_UNKNOWN_NID);
return (NULL);
}
return X509_ATTRIBUTE_create_by_OBJ(attr, obj, atrtype, data, len);
}
X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr,
const ASN1_OBJECT *obj,
int atrtype, const void *data,
int len)
{
X509_ATTRIBUTE *ret;
if ((attr == NULL) || (*attr == NULL)) {
if ((ret = X509_ATTRIBUTE_new()) == NULL) {
OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
return (NULL);
}
} else
ret = *attr;
if (!X509_ATTRIBUTE_set1_object(ret, obj))
goto err;
if (!X509_ATTRIBUTE_set1_data(ret, atrtype, data, len))
goto err;
if ((attr != NULL) && (*attr == NULL))
*attr = ret;
return (ret);
err:
if ((attr == NULL) || (ret != *attr))
X509_ATTRIBUTE_free(ret);
return (NULL);
}
X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_txt(X509_ATTRIBUTE **attr,
const char *atrname, int type,
const unsigned char *bytes,
int len)
{
ASN1_OBJECT *obj;
X509_ATTRIBUTE *nattr;
obj = OBJ_txt2obj(atrname, 0);
if (obj == NULL) {
OPENSSL_PUT_ERROR(X509, X509_R_INVALID_FIELD_NAME);
ERR_add_error_data(2, "name=", atrname);
return (NULL);
}
nattr = X509_ATTRIBUTE_create_by_OBJ(attr, obj, type, bytes, len);
ASN1_OBJECT_free(obj);
return nattr;
}
int X509_ATTRIBUTE_set1_object(X509_ATTRIBUTE *attr, const ASN1_OBJECT *obj)
{
if ((attr == NULL) || (obj == NULL))
return (0);
ASN1_OBJECT_free(attr->object);
attr->object = OBJ_dup(obj);
return attr->object != NULL;
}
int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype,
const void *data, int len)
{
ASN1_TYPE *ttmp = NULL;
ASN1_STRING *stmp = NULL;
int atype = 0;
if (!attr)
return 0;
if (attrtype & MBSTRING_FLAG) {
stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype,
OBJ_obj2nid(attr->object));
if (!stmp) {
OPENSSL_PUT_ERROR(X509, ERR_R_ASN1_LIB);
return 0;
}
atype = stmp->type;
} else if (len != -1) {
if (!(stmp = ASN1_STRING_type_new(attrtype)))
goto err;
if (!ASN1_STRING_set(stmp, data, len))
goto err;
atype = attrtype;
}
if (!(attr->value.set = sk_ASN1_TYPE_new_null()))
goto err;
attr->single = 0;
/*
* This is a bit naughty because the attribute should really have at
* least one value but some types use and zero length SET and require
* this.
*/
if (attrtype == 0) {
ASN1_STRING_free(stmp);
return 1;
}
if (!(ttmp = ASN1_TYPE_new()))
goto err;
if ((len == -1) && !(attrtype & MBSTRING_FLAG)) {
if (!ASN1_TYPE_set1(ttmp, attrtype, data))
goto err;
} else {
ASN1_TYPE_set(ttmp, atype, stmp);
stmp = NULL;
}
if (!sk_ASN1_TYPE_push(attr->value.set, ttmp))
goto err;
return 1;
err:
OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
ASN1_TYPE_free(ttmp);
ASN1_STRING_free(stmp);
return 0;
}
int X509_ATTRIBUTE_count(X509_ATTRIBUTE *attr)
{
if (!attr->single)
return sk_ASN1_TYPE_num(attr->value.set);
if (attr->value.single)
return 1;
return 0;
}
ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr)
{
if (attr == NULL)
return (NULL);
return (attr->object);
}
void *X509_ATTRIBUTE_get0_data(X509_ATTRIBUTE *attr, int idx,
int atrtype, void *data)
{
ASN1_TYPE *ttmp;
ttmp = X509_ATTRIBUTE_get0_type(attr, idx);
if (!ttmp)
return NULL;
if (atrtype != ASN1_TYPE_get(ttmp)) {
OPENSSL_PUT_ERROR(X509, X509_R_WRONG_TYPE);
return NULL;
}
return ttmp->value.ptr;
}
ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx)
{
if (attr == NULL)
return (NULL);
if (idx >= X509_ATTRIBUTE_count(attr))
return NULL;
if (!attr->single)
return sk_ASN1_TYPE_value(attr->value.set, idx);
else
return attr->value.single;
}