Fix whitespace, new-style comments.

[thirdparty/openssl.git] / ssl / ssl_rsa.c

/* 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);
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
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

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
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;
        /* Special case for DH: check two DH certificate types for a match.
         * This means for DH certificates we must set the certificate first.
         */
        if (pkey->type == EVP_PKEY_DH)
                {
                X509 *x;
                i = -1;
                x = c->pkeys[SSL_PKEY_DH_RSA].x509;
                if (x && X509_check_private_key(x, pkey))
                                i = SSL_PKEY_DH_RSA;
                x = c->pkeys[SSL_PKEY_DH_DSA].x509;
                if (i == -1 && x && X509_check_private_key(x, pkey))
                                i = SSL_PKEY_DH_DSA;
                ERR_clear_error();
                }
        else 
                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
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

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 */

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
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

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);
        }

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
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

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
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);
                return(0);
                }
        if (!ssl_cert_inst(&ctx->cert))
                {
                SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY,ERR_R_MALLOC_FAILURE);
                return(0);
                }
        if ((pkey=EVP_PKEY_new()) == NULL)
                {
                SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY,ERR_R_EVP_LIB);
                return(0);
                }

        RSA_up_ref(rsa);
        EVP_PKEY_assign_RSA(pkey,rsa);

        ret=ssl_set_pkey(ctx->cert, pkey);
        EVP_PKEY_free(pkey);
        return(ret);
        }

#ifndef OPENSSL_NO_STDIO
int SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx, 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_CTX_USE_RSAPRIVATEKEY_FILE,ERR_R_BUF_LIB);
                goto end;
                }

        if (BIO_read_filename(in,file) <= 0)
                {
                SSLerr(SSL_F_SSL_CTX_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,
                        ctx->default_passwd_callback,ctx->default_passwd_callback_userdata);
                }
        else
                {
                SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE,SSL_R_BAD_SSL_FILETYPE);
                goto end;
                }
        if (rsa == NULL)
                {
                SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE,j);
                goto end;
                }
        ret=SSL_CTX_use_RSAPrivateKey(ctx,rsa);
        RSA_free(rsa);
end:
        if (in != NULL) BIO_free(in);
        return(ret);
        }
#endif

int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx, const 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_CTX_USE_RSAPRIVATEKEY_ASN1,ERR_R_ASN1_LIB);
                return(0);
                }

        ret=SSL_CTX_use_RSAPrivateKey(ctx,rsa);
        RSA_free(rsa);
        return(ret);
        }
#endif /* !OPENSSL_NO_RSA */

int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey)
        {
        if (pkey == NULL)
                {
                SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY,ERR_R_PASSED_NULL_PARAMETER);
                return(0);
                }
        if (!ssl_cert_inst(&ctx->cert))
                {
                SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY,ERR_R_MALLOC_FAILURE);
                return(0);
                }
        return(ssl_set_pkey(ctx->cert,pkey));
        }

#ifndef OPENSSL_NO_STDIO
int SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, 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_CTX_USE_PRIVATEKEY_FILE,ERR_R_BUF_LIB);
                goto end;
                }

        if (BIO_read_filename(in,file) <= 0)
                {
                SSLerr(SSL_F_SSL_CTX_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,
                        ctx->default_passwd_callback,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_CTX_USE_PRIVATEKEY_FILE,SSL_R_BAD_SSL_FILETYPE);
                goto end;
                }
        if (pkey == NULL)
                {
                SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE,j);
                goto end;
                }
        ret=SSL_CTX_use_PrivateKey(ctx,pkey);
        EVP_PKEY_free(pkey);
end:
        if (in != NULL) BIO_free(in);
        return(ret);
        }
#endif

int SSL_CTX_use_PrivateKey_ASN1(int type, SSL_CTX *ctx, 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_CTX_USE_PRIVATEKEY_ASN1,ERR_R_ASN1_LIB);
                return(0);
                }

        ret=SSL_CTX_use_PrivateKey(ctx,pkey);
        EVP_PKEY_free(pkey);
        return(ret);
        }


#ifndef OPENSSL_NO_STDIO
/* Read a file that contains our certificate in "PEM" format,
 * possibly followed by a sequence of CA certificates that should be
 * sent to the peer in the Certificate message.
 */
int SSL_CTX_use_certificate_chain_file(SSL_CTX *ctx, const char *file)
        {
        BIO *in;
        int ret=0;
        X509 *x=NULL;

        ERR_clear_error(); /* clear error stack for SSL_CTX_use_certificate() */

        in = BIO_new(BIO_s_file_internal());
        if (in == NULL)
                {
                SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_CHAIN_FILE,ERR_R_BUF_LIB);
                goto end;
                }

        if (BIO_read_filename(in,file) <= 0)
                {
                SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_CHAIN_FILE,ERR_R_SYS_LIB);
                goto end;
                }

        x=PEM_read_bio_X509_AUX(in,NULL,ctx->default_passwd_callback,
                                ctx->default_passwd_callback_userdata);
        if (x == NULL)
                {
                SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_CHAIN_FILE,ERR_R_PEM_LIB);
                goto end;
                }

        ret = SSL_CTX_use_certificate(ctx, x);

        if (ERR_peek_error() != 0)
                ret = 0;  /* Key/certificate mismatch doesn't imply ret==0 ... */
        if (ret)
                {
                /* If we could set up our certificate, now proceed to
                 * the CA certificates.
                 */
                X509 *ca;
                int r;
                unsigned long err;

                SSL_CTX_clear_chain_certs(ctx);
                
                while ((ca = PEM_read_bio_X509(in, NULL,
                                        ctx->default_passwd_callback,
                                        ctx->default_passwd_callback_userdata))
                        != NULL)
                        {
                        r = SSL_CTX_add0_chain_cert(ctx, ca);
                        if (!r) 
                                {
                                X509_free(ca);
                                ret = 0;
                                goto end;
                                }
                        /* Note that we must not free r if it was successfully
                         * added to the chain (while we must free the main
                         * certificate, since its reference count is increased
                         * by SSL_CTX_use_certificate). */
                        }
                /* When the while loop ends, it's usually just EOF. */
                err = ERR_peek_last_error();
                if (ERR_GET_LIB(err) == ERR_LIB_PEM && ERR_GET_REASON(err) == PEM_R_NO_START_LINE)
                        ERR_clear_error();
                else 
                        ret = 0; /* some real error */
                }

end:
        if (x != NULL) X509_free(x);
        if (in != NULL) BIO_free(in);
        return(ret);
        }
#endif

#ifndef OPENSSL_NO_TLSEXT
static int serverinfo_find_extension(const unsigned char *serverinfo,
                                     size_t serverinfo_length,
                                     unsigned short extension_type,
                                     const unsigned char **extension_data,
                                     unsigned short *extension_length)
        {
        *extension_data = NULL;
        *extension_length = 0;
        if (serverinfo == NULL || serverinfo_length == 0)
                return 0;
        for (;;)
                {
                unsigned short type = 0; /* uint16 */
                unsigned short len = 0;  /* uint16 */

                /* end of serverinfo */
                if (serverinfo_length == 0)
                        return -1; /* Extension not found */

                /* read 2-byte type field */
                if (serverinfo_length < 2)
                        return 0; /* Error */
                type = (serverinfo[0] << 8) + serverinfo[1];
                serverinfo += 2;
                serverinfo_length -= 2;

                /* read 2-byte len field */
                if (serverinfo_length < 2)
                        return 0; /* Error */
                len = (serverinfo[0] << 8) + serverinfo[1];
                serverinfo += 2;
                serverinfo_length -= 2;

                if (len > serverinfo_length)
                        return 0; /* Error */

                if (type == extension_type)
                        {
                        *extension_data = serverinfo;
                        *extension_length = len;
                        return 1; /* Success */
                        }

                serverinfo += len;
                serverinfo_length -= len;
                }
        return 0; /* Error */
        }

static int serverinfo_srv_first_cb(SSL *s, unsigned short ext_type,
                                   const unsigned char *in,
                                   unsigned short inlen, int *al,
                                   void *arg)
        {
        size_t i = 0;

        if (inlen != 0)
                {
                *al = SSL_AD_DECODE_ERROR;
                return 0;
                }

        /* if already in list, error out */
        for (i = 0; i < s->s3->serverinfo_client_tlsext_custom_types_count; i++)
                {
                if (s->s3->serverinfo_client_tlsext_custom_types[i] == ext_type)
                        {
                        *al = SSL_AD_DECODE_ERROR;
                        return 0;
                        }
                }
        s->s3->serverinfo_client_tlsext_custom_types_count++;
        s->s3->serverinfo_client_tlsext_custom_types = OPENSSL_realloc(
        s->s3->serverinfo_client_tlsext_custom_types,
        s->s3->serverinfo_client_tlsext_custom_types_count * 2);
        if (s->s3->serverinfo_client_tlsext_custom_types == NULL)
                {
                s->s3->serverinfo_client_tlsext_custom_types_count = 0;
                *al = TLS1_AD_INTERNAL_ERROR;
                return 0;
                }
        s->s3->serverinfo_client_tlsext_custom_types[
        s->s3->serverinfo_client_tlsext_custom_types_count - 1] = ext_type;

        return 1;
        }

static int serverinfo_srv_second_cb(SSL *s, unsigned short ext_type,
                                    const unsigned char **out, unsigned short *outlen,
                                    int *al, void *arg)
        {
        const unsigned char *serverinfo = NULL;
        size_t serverinfo_length = 0;
        size_t i = 0;
        unsigned int match = 0;
        /* Did the client send a TLS extension for this type? */
        for (i = 0; i < s->s3->serverinfo_client_tlsext_custom_types_count; i++)
                {
                if (s->s3->serverinfo_client_tlsext_custom_types[i] == ext_type)
                        {
                        match = 1;
                        break;
                        }
                }
        if (!match)
                {
                /* extension not sent by client...don't send extension */
                return -1;
                }

        /* Is there serverinfo data for the chosen server cert? */
        if ((ssl_get_server_cert_serverinfo(s, &serverinfo,
                                            &serverinfo_length)) != 0)
                {
                /* Find the relevant extension from the serverinfo */
                int retval = serverinfo_find_extension(serverinfo, serverinfo_length,
                                                       ext_type, out, outlen);
                if (retval == 0)
                        return 0; /* Error */
                if (retval == -1)
                        return -1; /* No extension found, don't send extension */
                return 1; /* Send extension */
                }
        return -1; /* No serverinfo data found, don't send extension */
        }

/* With a NULL context, this function just checks that the serverinfo data
   parses correctly.  With a non-NULL context, it registers callbacks for 
   the included extensions. */
static int serverinfo_process_buffer(const unsigned char *serverinfo, 
                                     size_t serverinfo_length, SSL_CTX *ctx)
        {
        if (serverinfo == NULL || serverinfo_length == 0)
                return 0;
        for (;;)
                {
                unsigned short ext_type = 0; /* uint16 */
                unsigned short len = 0;  /* uint16 */

                /* end of serverinfo */
                if (serverinfo_length == 0)
                        return 1;

                /* read 2-byte type field */
                if (serverinfo_length < 2)
                        return 0;
                /* FIXME: check for types we understand explicitly? */

                /* Register callbacks for extensions */
                ext_type = (serverinfo[0] << 8) + serverinfo[1];
                if (ctx && !SSL_CTX_set_custom_srv_ext(ctx, ext_type, 
                                                       serverinfo_srv_first_cb,
                                                       serverinfo_srv_second_cb, NULL))
                        return 0;

                serverinfo += 2;
                serverinfo_length -= 2;

                /* read 2-byte len field */
                if (serverinfo_length < 2)
                        return 0;
                len = (serverinfo[0] << 8) + serverinfo[1];
                serverinfo += 2;
                serverinfo_length -= 2;

                if (len > serverinfo_length)
                        return 0;

                serverinfo += len;
                serverinfo_length -= len;
                }
        }

int SSL_CTX_use_serverinfo(SSL_CTX *ctx, const unsigned char *serverinfo,
                           size_t serverinfo_length)
        {
        if (ctx == NULL || serverinfo == NULL || serverinfo_length == 0)
                {
                SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO,ERR_R_PASSED_NULL_PARAMETER);
                return 0;
                }
        if (!serverinfo_process_buffer(serverinfo, serverinfo_length, NULL))
                {
                SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO,SSL_R_INVALID_SERVERINFO_DATA);
                return 0;
                }
        if (!ssl_cert_inst(&ctx->cert))
                {
                SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO,ERR_R_MALLOC_FAILURE);
                return 0;
                }
        if (ctx->cert->key == NULL)
                {
                SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO,ERR_R_INTERNAL_ERROR);
                return 0;
                }
        ctx->cert->key->serverinfo = OPENSSL_realloc(ctx->cert->key->serverinfo,
                                                     serverinfo_length);
        if (ctx->cert->key->serverinfo == NULL)
                {
                SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO,ERR_R_MALLOC_FAILURE);
                return 0;
                }
        memcpy(ctx->cert->key->serverinfo, serverinfo, serverinfo_length);
        ctx->cert->key->serverinfo_length = serverinfo_length;

        /* Now that the serverinfo is validated and stored, go ahead and 
         * register callbacks. */
        if (!serverinfo_process_buffer(serverinfo, serverinfo_length, ctx))
                {
                SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO,SSL_R_INVALID_SERVERINFO_DATA);
                return 0;
                }
        return 1;
        }

#ifndef OPENSSL_NO_STDIO
int SSL_CTX_use_serverinfo_file(SSL_CTX *ctx, const char *file)
        {
        unsigned char *serverinfo = NULL;
        size_t serverinfo_length = 0;
        unsigned char* extension = 0;
        long extension_length = 0;
        char* name = NULL;
        char* header = NULL;
        char namePrefix[] = "SERVERINFO FOR ";
        int ret = 0;
        BIO *bin = NULL;
        size_t num_extensions = 0;

        if (ctx == NULL || file == NULL)
                {
                SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE,ERR_R_PASSED_NULL_PARAMETER);
                goto end;
                }

        bin = BIO_new(BIO_s_file_internal());
        if (bin == NULL)
                {
                SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, ERR_R_BUF_LIB);
                goto end;
                }
        if (BIO_read_filename(bin, file) <= 0)
                {
                SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, ERR_R_SYS_LIB);
                goto end;
                }

        for (num_extensions=0;; num_extensions++)
                {
                if (PEM_read_bio(bin, &name, &header, &extension, &extension_length) == 0)
                        {
                        /* There must be at least one extension in this file */
                        if (num_extensions == 0)
                                {
                                SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, SSL_R_NO_PEM_EXTENSIONS);
                                goto end;
                                }
                        else /* End of file, we're done */
                                break;
                        }
                /* Check that PEM name starts with "BEGIN SERVERINFO FOR " */
                if (strlen(name) < strlen(namePrefix))
                        {
                        SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, SSL_R_PEM_NAME_TOO_SHORT);
                        goto end;
                        }
                if (strncmp(name, namePrefix, strlen(namePrefix)) != 0)
                        {
                        SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, SSL_R_PEM_NAME_BAD_PREFIX);
                        goto end;
                        }
                /* Check that the decoded PEM data is plausible (valid length field) */
                if (extension_length < 4 || (extension[2] << 8) + extension[3] != extension_length - 4)
                        {
                        SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, SSL_R_BAD_DATA);
                        goto end;
                        }
                /* Append the decoded extension to the serverinfo buffer */
                serverinfo = OPENSSL_realloc(serverinfo, serverinfo_length + extension_length);
                if (serverinfo == NULL)
                        {
                        SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, ERR_R_MALLOC_FAILURE);
                        goto end;
                        }
                memcpy(serverinfo + serverinfo_length, extension, extension_length);
                serverinfo_length += extension_length;

                OPENSSL_free(name); name = NULL;
                OPENSSL_free(header); header = NULL;
                OPENSSL_free(extension); extension = NULL;
                }

        ret = SSL_CTX_use_serverinfo(ctx, serverinfo, serverinfo_length);
end:
        /* SSL_CTX_use_serverinfo makes a local copy of the serverinfo. */
        OPENSSL_free(name);
        OPENSSL_free(header);
        OPENSSL_free(extension);
        OPENSSL_free(serverinfo);
        if (bin != NULL)
                BIO_free(bin);
        return ret;
        }
#endif /* OPENSSL_NO_STDIO */
#endif /* OPENSSL_NO_TLSEXT */