/* 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 <stdio.h>

 #include <openssl/stack.h>

 #include "cryptlib.h"

 #include <openssl/asn1.h>

 #include <openssl/objects.h>

 #include <openssl/evp.h>

 #include <openssl/x509.h>

 #include <openssl/x509v3.h>

 EXPORT_C int X509at_get_attr_count(const STACK_OF(X509_ATTRIBUTE) *x)

 {

 	if (!x) return 0;

 	return(sk_X509_ATTRIBUTE_num(x));

 }

 EXPORT_C int X509at_get_attr_by_NID(const STACK_OF(X509_ATTRIBUTE) *x, int nid,

 			  int lastpos)

 {

 	ASN1_OBJECT *obj;

 	obj=OBJ_nid2obj(nid);

 	if (obj == NULL) return(-2);

 	return(X509at_get_attr_by_OBJ(x,obj,lastpos));

 }

 EXPORT_C int X509at_get_attr_by_OBJ(const STACK_OF(X509_ATTRIBUTE) *sk, 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);

 }

 EXPORT_C X509_ATTRIBUTE *X509at_get_attr(const STACK_OF(X509_ATTRIBUTE) *x, int loc)

 {

 	if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0)

 		return NULL;

 	else

 		return sk_X509_ATTRIBUTE_value(x,loc);

 }

 EXPORT_C X509_ATTRIBUTE *X509at_delete_attr(STACK_OF(X509_ATTRIBUTE) *x, int loc)

 {

 	X509_ATTRIBUTE *ret;

 	if (x == NULL || sk_X509_ATTRIBUTE_num(x) <= loc || loc < 0)

 		return(NULL);

 	ret=sk_X509_ATTRIBUTE_delete(x,loc);

 	return(ret);

 }

 EXPORT_C 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)

 		{

 		X509err(X509_F_X509AT_ADD1_ATTR, 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:

 	X509err(X509_F_X509AT_ADD1_ATTR,ERR_R_MALLOC_FAILURE);

 err2:

 	if (new_attr != NULL) X509_ATTRIBUTE_free(new_attr);

 	if (sk != NULL) sk_X509_ATTRIBUTE_free(sk);

 	return(NULL);

 }

 EXPORT_C 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;

 }

 EXPORT_C 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;

 }

 EXPORT_C 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;

 }

 EXPORT_C X509_ATTRIBUTE *X509_ATTRIBUTE_create_by_NID(X509_ATTRIBUTE **attr, int nid,

 	     int atrtype, const void *data, int len)

 {

 	ASN1_OBJECT *obj;

 	X509_ATTRIBUTE *ret;

 	obj=OBJ_nid2obj(nid);

 	if (obj == NULL)

 		{

 		X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_NID,X509_R_UNKNOWN_NID);

 		return(NULL);

 		}

 	ret=X509_ATTRIBUTE_create_by_OBJ(attr,obj,atrtype,data,len);

 	if (ret == NULL) ASN1_OBJECT_free(obj);

 	return(ret);

 }

 EXPORT_C 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)

 			{

 			X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_OBJ,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);

 }

 EXPORT_C 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)

 		{

 		X509err(X509_F_X509_ATTRIBUTE_CREATE_BY_TXT,

 						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;

 	}

 EXPORT_C 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(1);

 }

 EXPORT_C int X509_ATTRIBUTE_set1_data(X509_ATTRIBUTE *attr, int attrtype, const void *data, int len)

 {

 	ASN1_TYPE *ttmp;

 	ASN1_STRING *stmp;

 	int atype;

 	if (!attr) return 0;

 	if(attrtype & MBSTRING_FLAG) {

 		stmp = ASN1_STRING_set_by_NID(NULL, data, len, attrtype,

 						OBJ_obj2nid(attr->object));

 		if(!stmp) {

 			X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_ASN1_LIB);

 			return 0;

 		}

 		atype = stmp->type;

 	} else {

 		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;

 	if(!(ttmp = ASN1_TYPE_new())) goto err;

 	if(!sk_ASN1_TYPE_push(attr->value.set, ttmp)) goto err;

 	attr->single = 0;

 	ASN1_TYPE_set(ttmp, atype, stmp);

 	return 1;

 	err:

 	X509err(X509_F_X509_ATTRIBUTE_SET1_DATA, ERR_R_MALLOC_FAILURE);

 	return 0;

 }

 EXPORT_C 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;

 }

 EXPORT_C ASN1_OBJECT *X509_ATTRIBUTE_get0_object(X509_ATTRIBUTE *attr)

 {

 	if (attr == NULL) return(NULL);

 	return(attr->object);

 }

 EXPORT_C 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)){

 		X509err(X509_F_X509_ATTRIBUTE_GET0_DATA, X509_R_WRONG_TYPE);

 		return NULL;

 	}

 	return ttmp->value.ptr;

 }

 EXPORT_C 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;

 }