crypto/openssl/ssl/s23_lib.c

   1 /* ssl/s23_lib.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@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@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@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@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 IMPLEMENT_ssl23_meth_func(sslv23_base_method,
  69                         ssl_undefined_function,
  70                         ssl_undefined_function,
  71                         ssl_bad_method)
  72
  73 int ssl23_num_ciphers(void)
  74         {
  75         return(ssl3_num_ciphers()
  76 #ifndef OPENSSL_NO_SSL2
  77                + ssl2_num_ciphers()
  78 #endif
  79             );
  80         }
  81
  82 SSL_CIPHER *ssl23_get_cipher(unsigned int u)
  83         {
  84         unsigned int uu=ssl3_num_ciphers();
  85
  86         if (u < uu)
  87                 return(ssl3_get_cipher(u));
  88         else
  89 #ifndef OPENSSL_NO_SSL2
  90                 return(ssl2_get_cipher(u-uu));
  91 #else
  92                 return(NULL);
  93 #endif
  94         }
  95
  96 /* This function needs to check if the ciphers required are actually
  97  * available */
  98 SSL_CIPHER *ssl23_get_cipher_by_char(const unsigned char *p)
  99         {
 100         SSL_CIPHER c,*cp;
 101         unsigned long id;
 102         int n;
 103
 104         n=ssl3_num_ciphers();
 105         id=0x03000000|((unsigned long)p[0]<<16L)|
 106                 ((unsigned long)p[1]<<8L)|(unsigned long)p[2];
 107         c.id=id;
 108         cp=ssl3_get_cipher_by_char(p);
 109 #ifndef OPENSSL_NO_SSL2
 110         if (cp == NULL)
 111                 cp=ssl2_get_cipher_by_char(p);
 112 #endif
 113         return(cp);
 114         }
 115
 116 int ssl23_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p)
 117         {
 118         long l;
 119
 120         /* We can write SSLv2 and SSLv3 ciphers */
 121         if (p != NULL)
 122                 {
 123                 l=c->id;
 124                 p[0]=((unsigned char)(l>>16L))&0xFF;
 125                 p[1]=((unsigned char)(l>> 8L))&0xFF;
 126                 p[2]=((unsigned char)(l     ))&0xFF;
 127                 }
 128         return(3);
 129         }
 130
 131 int ssl23_read(SSL *s, void *buf, int len)
 132         {
 133         int n;
 134
 135         clear_sys_error();
 136         if (SSL_in_init(s) && (!s->in_handshake))
 137                 {
 138                 n=s->handshake_func(s);
 139                 if (n < 0) return(n);
 140                 if (n == 0)
 141                         {
 142                         SSLerr(SSL_F_SSL23_READ,SSL_R_SSL_HANDSHAKE_FAILURE);
 143                         return(-1);
 144                         }
 145                 return(SSL_read(s,buf,len));
 146                 }
 147         else
 148                 {
 149                 ssl_undefined_function(s);
 150                 return(-1);
 151                 }
 152         }
 153
 154 int ssl23_peek(SSL *s, void *buf, int len)
 155         {
 156         int n;
 157
 158         clear_sys_error();
 159         if (SSL_in_init(s) && (!s->in_handshake))
 160                 {
 161                 n=s->handshake_func(s);
 162                 if (n < 0) return(n);
 163                 if (n == 0)
 164                         {
 165                         SSLerr(SSL_F_SSL23_PEEK,SSL_R_SSL_HANDSHAKE_FAILURE);
 166                         return(-1);
 167                         }
 168                 return(SSL_peek(s,buf,len));
 169                 }
 170         else
 171                 {
 172                 ssl_undefined_function(s);
 173                 return(-1);
 174                 }
 175         }
 176
 177 int ssl23_write(SSL *s, const void *buf, int len)
 178         {
 179         int n;
 180
 181         clear_sys_error();
 182         if (SSL_in_init(s) && (!s->in_handshake))
 183                 {
 184                 n=s->handshake_func(s);
 185                 if (n < 0) return(n);
 186                 if (n == 0)
 187                         {
 188                         SSLerr(SSL_F_SSL23_WRITE,SSL_R_SSL_HANDSHAKE_FAILURE);
 189                         return(-1);
 190                         }
 191                 return(SSL_write(s,buf,len));
 192                 }
 193         else
 194                 {
 195                 ssl_undefined_function(s);
 196                 return(-1);
 197                 }
 198         }