/*
 *		Common Public License Version 0.5
 *
 *		THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF
 *		THIS COMMON PUBLIC LICENSE ("AGREEMENT"). ANY USE,
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 * (C) COPYRIGHT International Business Machines Corp. 2001, 2002
 */
/*
 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 * Copyright 2012 Milan Jurik. All rights reserved.
 */

#include "tpmtok_int.h"

/*
 * cert_check_required_attributes
 *
 * Checks for required attributes for generic CKO_CERTIFICATE objects
 *
 *    CKA_CERTIFICATE_TYPE : must be present on MODE_CREATE.
 */
static CK_RV
cert_check_required_attributes(TEMPLATE *tmpl, CK_ULONG mode)
{
	CK_ATTRIBUTE * attr = NULL;
	CK_BBOOL found;

	if (! tmpl)
	return (CKR_FUNCTION_FAILED);

	if (mode == MODE_CREATE) {
		found = template_attribute_find(tmpl,
		    CKA_CERTIFICATE_TYPE, &attr);
		if (found == FALSE) {
			return (CKR_TEMPLATE_INCOMPLETE);
		}
	}

	return (template_check_required_base_attributes(tmpl, mode));
}

/*
 * cert_validate_attribute()
 */
CK_RV
cert_validate_attribute(TEMPLATE *tmpl, CK_ATTRIBUTE *attr, CK_ULONG mode)
{
	CK_CERTIFICATE_TYPE type;

	switch (attr->type) {
		case CKA_CERTIFICATE_TYPE:
			if (mode != MODE_CREATE) {
				return (CKR_ATTRIBUTE_READ_ONLY);
			}
			type = *(CK_CERTIFICATE_TYPE *)attr->pValue;
			if (type == CKC_X_509 || type >= CKC_VENDOR_DEFINED)
				return (CKR_OK);
			else {
				return (CKR_ATTRIBUTE_VALUE_INVALID);
			}
		default:
			return (
			    template_validate_base_attribute(tmpl, attr, mode));
	}
}

CK_RV
cert_x509_check_required_attributes(TEMPLATE *tmpl, CK_ULONG mode) {
	CK_ATTRIBUTE *attr = NULL;
	CK_BBOOL found;

	found = template_attribute_find(tmpl, CKA_SUBJECT, &attr);
	if (! found) {
		return (CKR_TEMPLATE_INCOMPLETE);
	}
	found = template_attribute_find(tmpl, CKA_VALUE, &attr);
	if (! found) {
		return (CKR_TEMPLATE_INCOMPLETE);
	}
	return (cert_check_required_attributes(tmpl, mode));
}

/*
 * cert_x509_set_default_attributes()
 *
 * Set the default attributes for X.509 certificates
 *
 *    CKA_ID            : empty string
 *    CKA_ISSUER        : empty string
 *    CKA_SERIAL_NUMBER : empty string
 */
CK_RV
cert_x509_set_default_attributes(TEMPLATE *tmpl, CK_ULONG mode)
{
	CK_ATTRIBUTE * id_attr = NULL;
	CK_ATTRIBUTE * issuer_attr = NULL;
	CK_ATTRIBUTE * serial_attr = NULL;

	if (mode)
	id_attr = NULL;

	id_attr = (CK_ATTRIBUTE *)malloc(sizeof (CK_ATTRIBUTE));
	issuer_attr = (CK_ATTRIBUTE *)malloc(sizeof (CK_ATTRIBUTE));
	serial_attr = (CK_ATTRIBUTE *)malloc(sizeof (CK_ATTRIBUTE));

	if (! id_attr || ! issuer_attr || ! serial_attr) {
		if (id_attr) free(id_attr);
		if (issuer_attr) free(issuer_attr);
		if (serial_attr) free(serial_attr);

		return (CKR_HOST_MEMORY);
	}

	id_attr->type = CKA_ID;
	id_attr->ulValueLen = 0;
	id_attr->pValue = NULL;

	issuer_attr->type = CKA_ISSUER;
	issuer_attr->ulValueLen  = 0;
	issuer_attr->pValue = NULL;

	serial_attr->type = CKA_SERIAL_NUMBER;
	serial_attr->ulValueLen  = 0;
	serial_attr->pValue = NULL;

	(void) template_update_attribute(tmpl, id_attr);
	(void) template_update_attribute(tmpl, issuer_attr);
	(void) template_update_attribute(tmpl, serial_attr);

	return (CKR_OK);
}

CK_RV
cert_x509_validate_attribute(TEMPLATE *tmpl,
CK_ATTRIBUTE *attr, CK_ULONG mode)
{
	switch (attr->type) {
		case CKA_SUBJECT:
		if (mode != MODE_CREATE)
			return (CKR_ATTRIBUTE_READ_ONLY);
		else
			return (CKR_OK);

		case CKA_ID:
		case CKA_ISSUER:
		case CKA_SERIAL_NUMBER:
		return (CKR_OK);

		case CKA_VALUE:
		if (mode != MODE_CREATE)
			return (CKR_ATTRIBUTE_READ_ONLY);
		else
			return (CKR_OK);

		default:
		return (cert_validate_attribute(tmpl, attr, mode));
	}
}

CK_RV
cert_vendor_check_required_attributes(TEMPLATE *tmpl, CK_ULONG mode)
{
	return (cert_check_required_attributes(tmpl, mode));
}

CK_RV
cert_vendor_validate_attribute(TEMPLATE *tmpl,
	CK_ATTRIBUTE *attr, CK_ULONG mode)
{
	return (cert_validate_attribute(tmpl, attr, mode));
}