/*

 * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the OpenSSL license (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 <string.h>

#include "rsa_local.h"

#include <openssl/err.h>

RSA_METHOD *RSA_meth_new(const char *name, int flags)

{

    RSA_METHOD *meth = OPENSSL_zalloc(sizeof(*meth));

    if (meth != NULL) {

        meth->flags = flags;

        meth->name = OPENSSL_strdup(name);

        if (meth->name != NULL)

            return meth;

        OPENSSL_free(meth);

    }

    RSAerr(RSA_F_RSA_METH_NEW, ERR_R_MALLOC_FAILURE);

    return NULL;

}

void RSA_meth_free(RSA_METHOD *meth)

{

    if (meth != NULL) {

        OPENSSL_free(meth->name);

        OPENSSL_free(meth);

    }

}

RSA_METHOD *RSA_meth_dup(const RSA_METHOD *meth)

{

    RSA_METHOD *ret = OPENSSL_malloc(sizeof(*ret));

    if (ret != NULL) {

        memcpy(ret, meth, sizeof(*meth));

        ret->name = OPENSSL_strdup(meth->name);

        if (ret->name != NULL)

            return ret;

        OPENSSL_free(ret);

    }

    RSAerr(RSA_F_RSA_METH_DUP, ERR_R_MALLOC_FAILURE);

    return NULL;

}

const char *RSA_meth_get0_name(const RSA_METHOD *meth)

{

    return meth->name;

}

int RSA_meth_set1_name(RSA_METHOD *meth, const char *name)

{

    char *tmpname = OPENSSL_strdup(name);

    if (tmpname == NULL) {

        RSAerr(RSA_F_RSA_METH_SET1_NAME, ERR_R_MALLOC_FAILURE);

        return 0;

    }

    OPENSSL_free(meth->name);

    meth->name = tmpname;

    return 1;

}

int RSA_meth_get_flags(const RSA_METHOD *meth)

{

    return meth->flags;

}

int RSA_meth_set_flags(RSA_METHOD *meth, int flags)

{

    meth->flags = flags;

    return 1;

}

void *RSA_meth_get0_app_data(const RSA_METHOD *meth)

{

    return meth->app_data;

}

int RSA_meth_set0_app_data(RSA_METHOD *meth, void *app_data)

{

    meth->app_data = app_data;

    return 1;

}

int (*RSA_meth_get_pub_enc(const RSA_METHOD *meth))

    (int flen, const unsigned char *from,

     unsigned char *to, RSA *rsa, int padding)

{

    return meth->rsa_pub_enc;

}

int RSA_meth_set_pub_enc(RSA_METHOD *meth,

                         int (*pub_enc) (int flen, const unsigned char *from,

                                         unsigned char *to, RSA *rsa,

                                         int padding))

{

    meth->rsa_pub_enc = pub_enc;

    return 1;

}

int (*RSA_meth_get_pub_dec(const RSA_METHOD *meth))

    (int flen, const unsigned char *from,

     unsigned char *to, RSA *rsa, int padding)

{

    return meth->rsa_pub_dec;

}

int RSA_meth_set_pub_dec(RSA_METHOD *meth,

                         int (*pub_dec) (int flen, const unsigned char *from,

                                         unsigned char *to, RSA *rsa,

                                         int padding))

{

    meth->rsa_pub_dec = pub_dec;

    return 1;

}

int (*RSA_meth_get_priv_enc(const RSA_METHOD *meth))

    (int flen, const unsigned char *from,

     unsigned char *to, RSA *rsa, int padding)

{

    return meth->rsa_priv_enc;

}

int RSA_meth_set_priv_enc(RSA_METHOD *meth,

                          int (*priv_enc) (int flen, const unsigned char *from,

                                           unsigned char *to, RSA *rsa,

                                           int padding))

{

    meth->rsa_priv_enc = priv_enc;

    return 1;

}

int (*RSA_meth_get_priv_dec(const RSA_METHOD *meth))

    (int flen, const unsigned char *from,

     unsigned char *to, RSA *rsa, int padding)

{

    return meth->rsa_priv_dec;

}

int RSA_meth_set_priv_dec(RSA_METHOD *meth,

                          int (*priv_dec) (int flen, const unsigned char *from,

                                           unsigned char *to, RSA *rsa,

                                           int padding))

{

    meth->rsa_priv_dec = priv_dec;

    return 1;

}

    /* Can be null */

int (*RSA_meth_get_mod_exp(const RSA_METHOD *meth))

    (BIGNUM *r0, const BIGNUM *i, RSA *rsa, BN_CTX *ctx)

{

    return meth->rsa_mod_exp;

}

int RSA_meth_set_mod_exp(RSA_METHOD *meth,

                         int (*mod_exp) (BIGNUM *r0, const BIGNUM *i, RSA *rsa,

                                         BN_CTX *ctx))

{

    meth->rsa_mod_exp = mod_exp;

    return 1;

}

    /* Can be null */

int (*RSA_meth_get_bn_mod_exp(const RSA_METHOD *meth))

    (BIGNUM *r, const BIGNUM *a, const BIGNUM *p,

     const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)

{

    return meth->bn_mod_exp;

}

int RSA_meth_set_bn_mod_exp(RSA_METHOD *meth,

                            int (*bn_mod_exp) (BIGNUM *r,

                                               const BIGNUM *a,

                                               const BIGNUM *p,

                                               const BIGNUM *m,

                                               BN_CTX *ctx,

                                               BN_MONT_CTX *m_ctx))

{

    meth->bn_mod_exp = bn_mod_exp;

    return 1;

}

    /* called at new */

int (*RSA_meth_get_init(const RSA_METHOD *meth)) (RSA *rsa)

{

    return meth->init;

}

int RSA_meth_set_init(RSA_METHOD *meth, int (*init) (RSA *rsa))

{

    meth->init = init;

    return 1;

}

    /* called at free */

int (*RSA_meth_get_finish(const RSA_METHOD *meth)) (RSA *rsa)

{

    return meth->finish;

}

int RSA_meth_set_finish(RSA_METHOD *meth, int (*finish) (RSA *rsa))

{

    meth->finish = finish;

    return 1;

}

int (*RSA_meth_get_sign(const RSA_METHOD *meth))

    (int type,

     const unsigned char *m, unsigned int m_length,

     unsigned char *sigret, unsigned int *siglen,

     const RSA *rsa)

{

    return meth->rsa_sign;

}

int RSA_meth_set_sign(RSA_METHOD *meth,

                      int (*sign) (int type, const unsigned char *m,

                                   unsigned int m_length,

                                   unsigned char *sigret, unsigned int *siglen,

                                   const RSA *rsa))

{

    meth->rsa_sign = sign;

    return 1;

}

int (*RSA_meth_get_verify(const RSA_METHOD *meth))

    (int dtype, const unsigned char *m,

     unsigned int m_length, const unsigned char *sigbuf,

     unsigned int siglen, const RSA *rsa)

{

    return meth->rsa_verify;

}

int RSA_meth_set_verify(RSA_METHOD *meth,

                        int (*verify) (int dtype, const unsigned char *m,

                                       unsigned int m_length,

                                       const unsigned char *sigbuf,

                                       unsigned int siglen, const RSA *rsa))

{

    meth->rsa_verify = verify;

    return 1;

}

int (*RSA_meth_get_keygen(const RSA_METHOD *meth))

    (RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb)

{

    return meth->rsa_keygen;

}

int RSA_meth_set_keygen(RSA_METHOD *meth,

                        int (*keygen) (RSA *rsa, int bits, BIGNUM *e,

                                       BN_GENCB *cb))

{

    meth->rsa_keygen = keygen;

    return 1;

}

int (*RSA_meth_get_multi_prime_keygen(const RSA_METHOD *meth))

    (RSA *rsa, int bits, int primes, BIGNUM *e, BN_GENCB *cb)

{

    return meth->rsa_multi_prime_keygen;

}

int RSA_meth_set_multi_prime_keygen(RSA_METHOD *meth,

                                    int (*keygen) (RSA *rsa, int bits,

                                                   int primes, BIGNUM *e,

                                                   BN_GENCB *cb))

{

    meth->rsa_multi_prime_keygen = keygen;

    return 1;

}