ref: 009439541d2c6e8af2596f8fb1b4df85861fd212
dir: /third_party/boringssl/src/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/obj.h>
#include <openssl/x509.h>
#include "../asn1/internal.h"
#include "internal.h"
X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid,
int attrtype, 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, attrtype, data, len);
}
X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_OBJ(X509_ATTRIBUTE **attr,
const ASN1_OBJECT *obj,
int attrtype, const void *data,
int len) {
X509_ATTRIBUTE *ret;
if ((attr == NULL) || (*attr == NULL)) {
if ((ret = X509_ATTRIBUTE_new()) == NULL) {
return NULL;
}
} else {
ret = *attr;
}
if (!X509_ATTRIBUTE_set1_object(ret, obj)) {
goto err;
}
if (!X509_ATTRIBUTE_set1_data(ret, attrtype, 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 *attrname, int type,
const unsigned char *bytes,
int len) {
ASN1_OBJECT *obj;
X509_ATTRIBUTE *nattr;
obj = OBJ_txt2obj(attrname, 0);
if (obj == NULL) {
OPENSSL_PUT_ERROR(X509, X509_R_INVALID_FIELD_NAME);
ERR_add_error_data(2, "name=", attrname);
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) {
if (!attr) {
return 0;
}
if (attrtype == 0) {
// Do nothing. This is used to create an empty value set in
// |X509_ATTRIBUTE_create_by_*|. This is invalid, but supported by OpenSSL.
return 1;
}
ASN1_TYPE *typ = ASN1_TYPE_new();
if (typ == NULL) {
return 0;
}
// This function is several functions in one.
if (attrtype & MBSTRING_FLAG) {
// |data| is an encoded string. We must decode and re-encode it to |attr|'s
// preferred ASN.1 type. Note |len| may be -1, in which case
// |ASN1_STRING_set_by_NID| calls |strlen| automatically.
ASN1_STRING *str = ASN1_STRING_set_by_NID(NULL, data, len, attrtype,
OBJ_obj2nid(attr->object));
if (str == NULL) {
OPENSSL_PUT_ERROR(X509, ERR_R_ASN1_LIB);
goto err;
}
asn1_type_set0_string(typ, str);
} else if (len != -1) {
// |attrtype| must be a valid |ASN1_STRING| type. |data| and |len| is a
// value in the corresponding |ASN1_STRING| representation.
ASN1_STRING *str = ASN1_STRING_type_new(attrtype);
if (str == NULL || !ASN1_STRING_set(str, data, len)) {
ASN1_STRING_free(str);
goto err;
}
asn1_type_set0_string(typ, str);
} else {
// |attrtype| must be a valid |ASN1_TYPE| type. |data| is a pointer to an
// object of the corresponding type.
if (!ASN1_TYPE_set1(typ, attrtype, data)) {
goto err;
}
}
if (!sk_ASN1_TYPE_push(attr->set, typ)) {
goto err;
}
return 1;
err:
ASN1_TYPE_free(typ);
return 0;
}
int X509_ATTRIBUTE_count(const X509_ATTRIBUTE *attr) {
return (int)sk_ASN1_TYPE_num(attr->set);
}
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 attrtype,
void *unused) {
ASN1_TYPE *ttmp;
ttmp = X509_ATTRIBUTE_get0_type(attr, idx);
if (!ttmp) {
return NULL;
}
if (attrtype != ASN1_TYPE_get(ttmp)) {
OPENSSL_PUT_ERROR(X509, X509_R_WRONG_TYPE);
return NULL;
}
return (void *)asn1_type_value_as_pointer(ttmp);
}
ASN1_TYPE *X509_ATTRIBUTE_get0_type(X509_ATTRIBUTE *attr, int idx) {
if (attr == NULL) {
return NULL;
}
if (idx >= X509_ATTRIBUTE_count(attr)) {
return NULL;
}
return sk_ASN1_TYPE_value(attr->set, idx);
}