/*
 * Copyright (c) 1995-2000 Intel Corporation. All rights reserved.
 */
/*
 * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include <stdlib.h>
#include <string.h>

#include <kmfapiP.h>

typedef struct {
        KMF_OID * AlgOID;
        KMF_ALGORITHM_INDEX AlgID;
} KMF_OID_ID;

/*
 * The following table defines the mapping of AlgOID's to AlgID's.
 */
static KMF_OID_ID ALGOID_ID_Table[] = {
        {(KMF_OID *)&KMFOID_X9CM_DSA, KMF_ALGID_DSA},
        {(KMF_OID *)&KMFOID_X9CM_DSAWithSHA1, KMF_ALGID_SHA1WithDSA},
        {(KMF_OID *)&KMFOID_SHA1, KMF_ALGID_SHA1},
        {(KMF_OID *)&KMFOID_RSA, KMF_ALGID_RSA},
        {(KMF_OID *)&KMFOID_DSA, KMF_ALGID_DSA},
        {(KMF_OID *)&KMFOID_MD5WithRSA, KMF_ALGID_MD5WithRSA},
        {(KMF_OID *)&KMFOID_SHA1WithRSA, KMF_ALGID_SHA1WithRSA},
        {(KMF_OID *)&KMFOID_SHA1WithDSA, KMF_ALGID_SHA1WithDSA},
        {(KMF_OID *)&KMFOID_SHA256WithDSA, KMF_ALGID_SHA256WithDSA},
        {(KMF_OID *)&KMFOID_SHA1WithECDSA, KMF_ALGID_SHA1WithECDSA},
        {(KMF_OID *)&KMFOID_SHA256WithECDSA, KMF_ALGID_SHA256WithECDSA},
        {(KMF_OID *)&KMFOID_SHA256WithRSA, KMF_ALGID_SHA256WithRSA},
        {(KMF_OID *)&KMFOID_SHA384WithECDSA, KMF_ALGID_SHA384WithECDSA},
        {(KMF_OID *)&KMFOID_SHA384WithRSA, KMF_ALGID_SHA384WithRSA},
        {(KMF_OID *)&KMFOID_SHA512WithECDSA, KMF_ALGID_SHA512WithECDSA},
        {(KMF_OID *)&KMFOID_SHA512WithRSA, KMF_ALGID_SHA512WithRSA},
        {(KMF_OID *)&KMFOID_EC_PUBLIC_KEY, KMF_ALGID_ECDSA}
};

#define NUM_ALGOIDS ((sizeof (ALGOID_ID_Table))/(sizeof (ALGOID_ID_Table[0])))

/*
 * Name: x509_algid_to_algoid
 *
 * Description:
 * This function maps the specified AlgID to the corresponding
 * Algorithm OID.
 *
 * Parameters:
 * alg_int - AlgID to be mapped.
 *
 * Return value:
 * Pointer to OID structure and NULL in case of failure.
 *
 */
KMF_OID *
x509_algid_to_algoid(KMF_ALGORITHM_INDEX alg_int)
{
        int i;

        switch (alg_int) {
                case KMF_ALGID_NONE:
                        return (NULL);

                default:
                        for (i = 0; i < NUM_ALGOIDS; i++) {
                                if (ALGOID_ID_Table[i].AlgID == alg_int)
                                        return (ALGOID_ID_Table[i].AlgOID);
                        }
                        break;
        }

        return (NULL);
}

/*
 * Name: x509_algoid_to_algid
 *
 * Description:
 * This function maps the specified Algorithm OID to the corresponding
 * AlgID.
 *
 * Parameters:
 * Oid - OID to be mapped.
 *
 * Return value:
 * Algorithm ID and KMF_ALGID_NONE in case of failures.
 */
KMF_ALGORITHM_INDEX
x509_algoid_to_algid(KMF_OID * Oid)
{
        int i;

        if ((Oid == NULL) || (Oid->Data == NULL) || (Oid->Length == 0)) {
                return (KMF_ALGID_NONE);
        }

        for (i = 0; i < NUM_ALGOIDS; i++) {
                if (IsEqualOid(ALGOID_ID_Table[i].AlgOID, Oid))
                        return (ALGOID_ID_Table[i].AlgID);
        }

        return (KMF_ALGID_NONE);
}