/*

 * Copyright 1999-2021 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the Apache License 2.0 (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

#include <stdio.h>

#include "internal/cryptlib.h"

#include <openssl/x509.h>

int NETSCAPE_SPKI_set_pubkey(NETSCAPE_SPKI *x, EVP_PKEY *pkey)

{

    if ((x == NULL) || (x->spkac == NULL))

        return 0;

    return X509_PUBKEY_set(&(x->spkac->pubkey), pkey);

}

EVP_PKEY *NETSCAPE_SPKI_get_pubkey(NETSCAPE_SPKI *x)

{

    if ((x == NULL) || (x->spkac == NULL))

        return NULL;

    return X509_PUBKEY_get(x->spkac->pubkey);

}

/* Load a Netscape SPKI from a base64 encoded string */

NETSCAPE_SPKI *NETSCAPE_SPKI_b64_decode(const char *str, int len)

{

    unsigned char *spki_der;

    const unsigned char *p;

    int spki_len;

    NETSCAPE_SPKI *spki;

    if (len <= 0)

        len = strlen(str);

    if ((spki_der = OPENSSL_malloc(len + 1)) == NULL) {

        ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE);

        return NULL;

    }

    spki_len = EVP_DecodeBlock(spki_der, (const unsigned char *)str, len);

    if (spki_len < 0) {

        ERR_raise(ERR_LIB_X509, X509_R_BASE64_DECODE_ERROR);

        OPENSSL_free(spki_der);

        return NULL;

    }

    p = spki_der;

    spki = d2i_NETSCAPE_SPKI(NULL, &p, spki_len);

    OPENSSL_free(spki_der);

    return spki;

}

/* Generate a base64 encoded string from an SPKI */

char *NETSCAPE_SPKI_b64_encode(NETSCAPE_SPKI *spki)

{

    unsigned char *der_spki, *p;

    char *b64_str;

    int der_len;

    der_len = i2d_NETSCAPE_SPKI(spki, NULL);

    if (der_len <= 0)

        return NULL;

    der_spki = OPENSSL_malloc(der_len);

    b64_str = OPENSSL_malloc(der_len * 2);

    if (der_spki == NULL || b64_str == NULL) {

        ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE);

        OPENSSL_free(der_spki);

        OPENSSL_free(b64_str);

        return NULL;

    }

    p = der_spki;

    i2d_NETSCAPE_SPKI(spki, &p);

    EVP_EncodeBlock((unsigned char *)b64_str, der_spki, der_len);

    OPENSSL_free(der_spki);

    return b64_str;

}