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      1 /* ssl/s23_lib.c */
      2 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com)
      3  * All rights reserved.
      4  *
      5  * This package is an SSL implementation written
      6  * by Eric Young (eay (at) cryptsoft.com).
      7  * The implementation was written so as to conform with Netscapes SSL.
      8  *
      9  * This library is free for commercial and non-commercial use as long as
     10  * the following conditions are aheared to.  The following conditions
     11  * apply to all code found in this distribution, be it the RC4, RSA,
     12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
     13  * included with this distribution is covered by the same copyright terms
     14  * except that the holder is Tim Hudson (tjh (at) cryptsoft.com).
     15  *
     16  * Copyright remains Eric Young's, and as such any Copyright notices in
     17  * the code are not to be removed.
     18  * If this package is used in a product, Eric Young should be given attribution
     19  * as the author of the parts of the library used.
     20  * This can be in the form of a textual message at program startup or
     21  * in documentation (online or textual) provided with the package.
     22  *
     23  * Redistribution and use in source and binary forms, with or without
     24  * modification, are permitted provided that the following conditions
     25  * are met:
     26  * 1. Redistributions of source code must retain the copyright
     27  *    notice, this list of conditions and the following disclaimer.
     28  * 2. Redistributions in binary form must reproduce the above copyright
     29  *    notice, this list of conditions and the following disclaimer in the
     30  *    documentation and/or other materials provided with the distribution.
     31  * 3. All advertising materials mentioning features or use of this software
     32  *    must display the following acknowledgement:
     33  *    "This product includes cryptographic software written by
     34  *     Eric Young (eay (at) cryptsoft.com)"
     35  *    The word 'cryptographic' can be left out if the rouines from the library
     36  *    being used are not cryptographic related :-).
     37  * 4. If you include any Windows specific code (or a derivative thereof) from
     38  *    the apps directory (application code) you must include an acknowledgement:
     39  *    "This product includes software written by Tim Hudson (tjh (at) cryptsoft.com)"
     40  *
     41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
     42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     51  * SUCH DAMAGE.
     52  *
     53  * The licence and distribution terms for any publically available version or
     54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
     55  * copied and put under another distribution licence
     56  * [including the GNU Public Licence.]
     57  */
     58 
     59 #include <stdio.h>
     60 #include <openssl/objects.h>
     61 #include "ssl_locl.h"
     62 
     63 long ssl23_default_timeout(void)
     64 	{
     65 	return(300);
     66 	}
     67 
     68 int ssl23_num_ciphers(void)
     69 	{
     70 	return(ssl3_num_ciphers()
     71 #ifndef OPENSSL_NO_SSL2
     72 	       + ssl2_num_ciphers()
     73 #endif
     74 	    );
     75 	}
     76 
     77 const SSL_CIPHER *ssl23_get_cipher(unsigned int u)
     78 	{
     79 	unsigned int uu=ssl3_num_ciphers();
     80 
     81 	if (u < uu)
     82 		return(ssl3_get_cipher(u));
     83 	else
     84 #ifndef OPENSSL_NO_SSL2
     85 		return(ssl2_get_cipher(u-uu));
     86 #else
     87 		return(NULL);
     88 #endif
     89 	}
     90 
     91 /* This function needs to check if the ciphers required are actually
     92  * available */
     93 const SSL_CIPHER *ssl23_get_cipher_by_char(const unsigned char *p)
     94 	{
     95 	const SSL_CIPHER *cp;
     96 
     97 	cp=ssl3_get_cipher_by_char(p);
     98 #ifndef OPENSSL_NO_SSL2
     99 	if (cp == NULL)
    100 		cp=ssl2_get_cipher_by_char(p);
    101 #endif
    102 	return(cp);
    103 	}
    104 
    105 int ssl23_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p)
    106 	{
    107 	long l;
    108 
    109 	/* We can write SSLv2 and SSLv3 ciphers */
    110 	if (p != NULL)
    111 		{
    112 		l=c->id;
    113 		p[0]=((unsigned char)(l>>16L))&0xFF;
    114 		p[1]=((unsigned char)(l>> 8L))&0xFF;
    115 		p[2]=((unsigned char)(l     ))&0xFF;
    116 		}
    117 	return(3);
    118 	}
    119 
    120 int ssl23_read(SSL *s, void *buf, int len)
    121 	{
    122 	int n;
    123 
    124 	clear_sys_error();
    125 	if (SSL_in_init(s) && (!s->in_handshake))
    126 		{
    127 		n=s->handshake_func(s);
    128 		if (n < 0) return(n);
    129 		if (n == 0)
    130 			{
    131 			SSLerr(SSL_F_SSL23_READ,SSL_R_SSL_HANDSHAKE_FAILURE);
    132 			return(-1);
    133 			}
    134 		return(SSL_read(s,buf,len));
    135 		}
    136 	else
    137 		{
    138 		ssl_undefined_function(s);
    139 		return(-1);
    140 		}
    141 	}
    142 
    143 int ssl23_peek(SSL *s, void *buf, int len)
    144 	{
    145 	int n;
    146 
    147 	clear_sys_error();
    148 	if (SSL_in_init(s) && (!s->in_handshake))
    149 		{
    150 		n=s->handshake_func(s);
    151 		if (n < 0) return(n);
    152 		if (n == 0)
    153 			{
    154 			SSLerr(SSL_F_SSL23_PEEK,SSL_R_SSL_HANDSHAKE_FAILURE);
    155 			return(-1);
    156 			}
    157 		return(SSL_peek(s,buf,len));
    158 		}
    159 	else
    160 		{
    161 		ssl_undefined_function(s);
    162 		return(-1);
    163 		}
    164 	}
    165 
    166 int ssl23_write(SSL *s, const void *buf, int len)
    167 	{
    168 	int n;
    169 
    170 	clear_sys_error();
    171 	if (SSL_in_init(s) && (!s->in_handshake))
    172 		{
    173 		n=s->handshake_func(s);
    174 		if (n < 0) return(n);
    175 		if (n == 0)
    176 			{
    177 			SSLerr(SSL_F_SSL23_WRITE,SSL_R_SSL_HANDSHAKE_FAILURE);
    178 			return(-1);
    179 			}
    180 		return(SSL_write(s,buf,len));
    181 		}
    182 	else
    183 		{
    184 		ssl_undefined_function(s);
    185 		return(-1);
    186 		}
    187 	}
    188