/* ssl/s23_lib.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 <openssl/objects.h>

#include "ssl_locl.h"

long ssl23_default_timeout(void)

{

    return (300);

}

int ssl23_num_ciphers(void)

{

    return (ssl3_num_ciphers()

#ifndef OPENSSL_NO_SSL2

            + ssl2_num_ciphers()

#endif

        );

}

const SSL_CIPHER *ssl23_get_cipher(unsigned int u)

{

    unsigned int uu = ssl3_num_ciphers();

    if (u < uu)

        return (ssl3_get_cipher(u));

    else

#ifndef OPENSSL_NO_SSL2

        return (ssl2_get_cipher(u - uu));

#else

        return (NULL);

#endif

}

/*

 * This function needs to check if the ciphers required are actually

 * available

 */

const SSL_CIPHER *ssl23_get_cipher_by_char(const unsigned char *p)

{

    const SSL_CIPHER *cp;

    cp = ssl3_get_cipher_by_char(p);

#ifndef OPENSSL_NO_SSL2

    if (cp == NULL)

        cp = ssl2_get_cipher_by_char(p);

#endif

    return (cp);

}

int ssl23_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p)

{

    long l;

    /* We can write SSLv2 and SSLv3 ciphers */

    /* but no ECC ciphers */

    if (c->algorithm_mkey == SSL_kECDHr ||

        c->algorithm_mkey == SSL_kECDHe ||

        c->algorithm_mkey == SSL_kEECDH ||

        c->algorithm_auth == SSL_aECDH || c->algorithm_auth == SSL_aECDSA)

        return 0;

    if (p != NULL) {

        l = c->id;

        p[0] = ((unsigned char)(l >> 16L)) & 0xFF;

        p[1] = ((unsigned char)(l >> 8L)) & 0xFF;

        p[2] = ((unsigned char)(l)) & 0xFF;

    }

    return (3);

}

int ssl23_read(SSL *s, void *buf, int len)

{

    int n;

    clear_sys_error();

    if (SSL_in_init(s) && (!s->in_handshake)) {

        n = s->handshake_func(s);

        if (n < 0)

            return (n);

        if (n == 0) {

            SSLerr(SSL_F_SSL23_READ, SSL_R_SSL_HANDSHAKE_FAILURE);

            return (-1);

        }

        return (SSL_read(s, buf, len));

    } else {

        ssl_undefined_function(s);

        return (-1);

    }

}

int ssl23_peek(SSL *s, void *buf, int len)

{

    int n;

    clear_sys_error();

    if (SSL_in_init(s) && (!s->in_handshake)) {

        n = s->handshake_func(s);

        if (n < 0)

            return (n);

        if (n == 0) {

            SSLerr(SSL_F_SSL23_PEEK, SSL_R_SSL_HANDSHAKE_FAILURE);

            return (-1);

        }

        return (SSL_peek(s, buf, len));

    } else {

        ssl_undefined_function(s);

        return (-1);

    }

}

int ssl23_write(SSL *s, const void *buf, int len)

{

    int n;

    clear_sys_error();

    if (SSL_in_init(s) && (!s->in_handshake)) {

        n = s->handshake_func(s);

        if (n < 0)

            return (n);

        if (n == 0) {

            SSLerr(SSL_F_SSL23_WRITE, SSL_R_SSL_HANDSHAKE_FAILURE);

            return (-1);

        }

        return (SSL_write(s, buf, len));

    } else {

        ssl_undefined_function(s);

        return (-1);

    }

}