/* ssl/ssl_rsa.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 "ssl_locl.h"

#include <openssl/bio.h>

#include <openssl/objects.h>

#include <openssl/evp.h>

#include <openssl/x509.h>

#include <openssl/pem.h>

static int ssl_set_cert(CERT *c, X509 *x509);

static int ssl_set_pkey(CERT *c, EVP_PKEY *pkey);

EXPORT_C int SSL_use_certificate(SSL *ssl, X509 *x)

	{

	if (x == NULL)

		{

		SSLerr(SSL_F_SSL_USE_CERTIFICATE,ERR_R_PASSED_NULL_PARAMETER);

		return(0);

		}

	if (!ssl_cert_inst(&ssl->cert))

		{

		SSLerr(SSL_F_SSL_USE_CERTIFICATE,ERR_R_MALLOC_FAILURE);

		return(0);

		}

	return(ssl_set_cert(ssl->cert,x));

	}

#ifndef OPENSSL_NO_STDIO

EXPORT_C int SSL_use_certificate_file(SSL *ssl, const char *file, int type)

	{

	int j;

	BIO *in;

	int ret=0;

	X509 *x=NULL;

	in=BIO_new(BIO_s_file_internal());

	if (in == NULL)

		{

		SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE,ERR_R_BUF_LIB);

		goto end;

		}

	if (BIO_read_filename(in,file) <= 0)

		{

		SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE,ERR_R_SYS_LIB);

		goto end;

		}

	if (type == SSL_FILETYPE_ASN1)

		{

		j=ERR_R_ASN1_LIB;

		x=d2i_X509_bio(in,NULL);

		}

	else if (type == SSL_FILETYPE_PEM)

		{

		j=ERR_R_PEM_LIB;

		x=PEM_read_bio_X509(in,NULL,ssl->ctx->default_passwd_callback,ssl->ctx->default_passwd_callback_userdata);

		}

	else

		{

		SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE,SSL_R_BAD_SSL_FILETYPE);

		goto end;

		}

	if (x == NULL)

		{

		SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE,j);

		goto end;

		}

	ret=SSL_use_certificate(ssl,x);

end:

	if (x != NULL) X509_free(x);

	if (in != NULL) BIO_free(in);

	return(ret);

	}

#endif

EXPORT_C int SSL_use_certificate_ASN1(SSL *ssl, const unsigned char *d, int len)

	{

	X509 *x;

	int ret;

	x=d2i_X509(NULL,&d,(long)len);

	if (x == NULL)

		{

		SSLerr(SSL_F_SSL_USE_CERTIFICATE_ASN1,ERR_R_ASN1_LIB);

		return(0);

		}

	ret=SSL_use_certificate(ssl,x);

	X509_free(x);

	return(ret);

	}

#ifndef OPENSSL_NO_RSA

EXPORT_C int SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa)

	{

	EVP_PKEY *pkey;

	int ret;

	if (rsa == NULL)

		{

		SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY,ERR_R_PASSED_NULL_PARAMETER);

		return(0);

		}

	if (!ssl_cert_inst(&ssl->cert))

		{

		SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY,ERR_R_MALLOC_FAILURE);

		return(0);

		}

	if ((pkey=EVP_PKEY_new()) == NULL)

		{

		SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY,ERR_R_EVP_LIB);

		return(0);

		}

	RSA_up_ref(rsa);

	EVP_PKEY_assign_RSA(pkey,rsa);

	ret=ssl_set_pkey(ssl->cert,pkey);

	EVP_PKEY_free(pkey);

	return(ret);

	}

#endif

static int ssl_set_pkey(CERT *c, EVP_PKEY *pkey)

	{

	int i;

	i=ssl_cert_type(NULL,pkey);

	if (i < 0)

		{

		SSLerr(SSL_F_SSL_SET_PKEY,SSL_R_UNKNOWN_CERTIFICATE_TYPE);

		return(0);

		}

	if (c->pkeys[i].x509 != NULL)

		{

		EVP_PKEY *pktmp;

		pktmp =	X509_get_pubkey(c->pkeys[i].x509);

		EVP_PKEY_copy_parameters(pktmp,pkey);

		EVP_PKEY_free(pktmp);

		ERR_clear_error();

#ifndef OPENSSL_NO_RSA

		/* Don't check the public/private key, this is mostly

		 * for smart cards. */

		if ((pkey->type == EVP_PKEY_RSA) &&

			(RSA_flags(pkey->pkey.rsa) & RSA_METHOD_FLAG_NO_CHECK))

			;

		else

#endif

		if (!X509_check_private_key(c->pkeys[i].x509,pkey))

			{

			X509_free(c->pkeys[i].x509);

			c->pkeys[i].x509 = NULL;

			return 0;

			}

		}

	if (c->pkeys[i].privatekey != NULL)

		EVP_PKEY_free(c->pkeys[i].privatekey);

	CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);

	c->pkeys[i].privatekey=pkey;

	c->key= &(c->pkeys[i]);

	c->valid=0;

	return(1);

	}

#ifndef OPENSSL_NO_RSA

#ifndef OPENSSL_NO_STDIO

EXPORT_C int SSL_use_RSAPrivateKey_file(SSL *ssl, const char *file, int type)

	{

	int j,ret=0;

	BIO *in;

	RSA *rsa=NULL;

	in=BIO_new(BIO_s_file_internal());

	if (in == NULL)

		{

		SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE,ERR_R_BUF_LIB);

		goto end;

		}

	if (BIO_read_filename(in,file) <= 0)

		{

		SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE,ERR_R_SYS_LIB);

		goto end;

		}

	if	(type == SSL_FILETYPE_ASN1)

		{

		j=ERR_R_ASN1_LIB;

		rsa=d2i_RSAPrivateKey_bio(in,NULL);

		}

	else if (type == SSL_FILETYPE_PEM)

		{

		j=ERR_R_PEM_LIB;

		rsa=PEM_read_bio_RSAPrivateKey(in,NULL,

			ssl->ctx->default_passwd_callback,ssl->ctx->default_passwd_callback_userdata);

		}

	else

		{

		SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE,SSL_R_BAD_SSL_FILETYPE);

		goto end;

		}

	if (rsa == NULL)

		{

		SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE,j);

		goto end;

		}

	ret=SSL_use_RSAPrivateKey(ssl,rsa);

	RSA_free(rsa);

end:

	if (in != NULL) BIO_free(in);

	return(ret);

	}

#endif

EXPORT_C int SSL_use_RSAPrivateKey_ASN1(SSL *ssl, unsigned char *d, long len)

	{

	int ret;

	const unsigned char *p;

	RSA *rsa;

	p=d;

	if ((rsa=d2i_RSAPrivateKey(NULL,&p,(long)len)) == NULL)

		{

		SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_ASN1,ERR_R_ASN1_LIB);

		return(0);

		}

	ret=SSL_use_RSAPrivateKey(ssl,rsa);

	RSA_free(rsa);

	return(ret);

	}

#endif /* !OPENSSL_NO_RSA */

EXPORT_C int SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey)

	{

	int ret;

	if (pkey == NULL)

		{

		SSLerr(SSL_F_SSL_USE_PRIVATEKEY,ERR_R_PASSED_NULL_PARAMETER);

		return(0);

		}

	if (!ssl_cert_inst(&ssl->cert))

		{

		SSLerr(SSL_F_SSL_USE_PRIVATEKEY,ERR_R_MALLOC_FAILURE);

		return(0);

		}

	ret=ssl_set_pkey(ssl->cert,pkey);

	return(ret);

	}

#ifndef OPENSSL_NO_STDIO

EXPORT_C int SSL_use_PrivateKey_file(SSL *ssl, const char *file, int type)

	{

	int j,ret=0;

	BIO *in;

	EVP_PKEY *pkey=NULL;

	in=BIO_new(BIO_s_file_internal());

	if (in == NULL)

		{

		SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE,ERR_R_BUF_LIB);

		goto end;

		}

	if (BIO_read_filename(in,file) <= 0)

		{

		SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE,ERR_R_SYS_LIB);

		goto end;

		}

	if (type == SSL_FILETYPE_PEM)

		{

		j=ERR_R_PEM_LIB;

		pkey=PEM_read_bio_PrivateKey(in,NULL,

			ssl->ctx->default_passwd_callback,ssl->ctx->default_passwd_callback_userdata);

		}

	else if (type == SSL_FILETYPE_ASN1)

		{

		j = ERR_R_ASN1_LIB;

		pkey = d2i_PrivateKey_bio(in,NULL);

		}

	else

		{

		SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE,SSL_R_BAD_SSL_FILETYPE);

		goto end;

		}

	if (pkey == NULL)

		{

		SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE,j);

		goto end;

		}

	ret=SSL_use_PrivateKey(ssl,pkey);

	EVP_PKEY_free(pkey);

end:

	if (in != NULL) BIO_free(in);

	return(ret);

	}

#endif

EXPORT_C int SSL_use_PrivateKey_ASN1(int type, SSL *ssl, const unsigned char *d, long len)

	{

	int ret;

	const unsigned char *p;

	EVP_PKEY *pkey;

	p=d;

	if ((pkey=d2i_PrivateKey(type,NULL,&p,(long)len)) == NULL)

		{

		SSLerr(SSL_F_SSL_USE_PRIVATEKEY_ASN1,ERR_R_ASN1_LIB);

		return(0);

		}

	ret=SSL_use_PrivateKey(ssl,pkey);

	EVP_PKEY_free(pkey);

	return(ret);

	}

EXPORT_C int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x)

	{

	if (x == NULL)

		{

		SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE,ERR_R_PASSED_NULL_PARAMETER);

		return(0);

		}

	if (!ssl_cert_inst(&ctx->cert))

		{

		SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE,ERR_R_MALLOC_FAILURE);

		return(0);

		}

	return(ssl_set_cert(ctx->cert, x));

	}

static int ssl_set_cert(CERT *c, X509 *x)

	{

	EVP_PKEY *pkey;

	int i;

	pkey=X509_get_pubkey(x);

	if (pkey == NULL)

		{

		SSLerr(SSL_F_SSL_SET_CERT,SSL_R_X509_LIB);

		return(0);

		}

	i=ssl_cert_type(x,pkey);

	if (i < 0)

		{

		SSLerr(SSL_F_SSL_SET_CERT,SSL_R_UNKNOWN_CERTIFICATE_TYPE);

		EVP_PKEY_free(pkey);

		return(0);

		}

	if (c->pkeys[i].privatekey != NULL)

		{

		EVP_PKEY_copy_parameters(pkey,c->pkeys[i].privatekey);

		ERR_clear_error();

#ifndef OPENSSL_NO_RSA

		/* Don't check the public/private key, this is mostly

		 * for smart cards. */

		if ((c->pkeys[i].privatekey->type == EVP_PKEY_RSA) &&

			(RSA_flags(c->pkeys[i].privatekey->pkey.rsa) &

			 RSA_METHOD_FLAG_NO_CHECK))

			 ;

		else

#endif /* OPENSSL_NO_RSA */

		if (!X509_check_private_key(x,c->pkeys[i].privatekey))

			{

			/* don't fail for a cert/key mismatch, just free

			 * current private key (when switching to a different

			 * cert & key, first this function should be used,

			 * then ssl_set_pkey */

			EVP_PKEY_free(c->pkeys[i].privatekey);

			c->pkeys[i].privatekey=NULL;

			/* clear error queue */

			ERR_clear_error();

			}

		}

	EVP_PKEY_free(pkey);

	if (c->pkeys[i].x509 != NULL)

		X509_free(c->pkeys[i].x509);

	CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);

	c->pkeys[i].x509=x;

	c->key= &(c->pkeys[i]);

	c->valid=0;

	return(1);

	}

#ifndef OPENSSL_NO_STDIO

EXPORT_C int SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file, int type)

	{

	int j;

	BIO *in;

	int ret=0;

	X509 *x=NULL;

	in=BIO_new(BIO_s_file_internal());

	if (in == NULL)

		{

		SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE,ERR_R_BUF_LIB);

		goto end;

		}

	if (BIO_read_filename(in,file) <= 0)

		{

		SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE,ERR_R_SYS_LIB);

		goto end;

		}

	if (type == SSL_FILETYPE_ASN1)

		{

		j=ERR_R_ASN1_LIB;

		x=d2i_X509_bio(in,NULL);

		}

	else if (type == SSL_FILETYPE_PEM)

		{

		j=ERR_R_PEM_LIB;

		x=PEM_read_bio_X509(in,NULL,ctx->default_passwd_callback,ctx->default_passwd_callback_userdata);

		}

	else

		{

		SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE,SSL_R_BAD_SSL_FILETYPE);

		goto end;

		}

	if (x == NULL)

		{

		SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE,j);

		goto end;

		}

	ret=SSL_CTX_use_certificate(ctx,x);

end:

	if (x != NULL) X509_free(x);

	if (in != NULL) BIO_free(in);

	return(ret);

	}

#endif

EXPORT_C int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, int len, const unsigned char *d)

	{

	X509 *x;

	int ret;

	x=d2i_X509(NULL,&d,(long)len);

	if (x == NULL)

		{

		SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_ASN1,ERR_R_ASN1_LIB);

		return(0);

		}

	ret=SSL_CTX_use_certificate(ctx,x);

	X509_free(x);

	return(ret);

	}

#ifndef OPENSSL_NO_RSA

EXPORT_C int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa)

	{

	int ret;

	EVP_PKEY *pkey;

	if (rsa == NULL)

		{

		SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY,ERR_R_PASSED_NULL_PARAMETER);