crypto/external/bsd/openssl/dist/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 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 /*
  92  * This function needs to check if the ciphers required are actually
  93  * available
  94  */
  95 const SSL_CIPHER *ssl23_get_cipher_by_char(const unsigned char *p)
  96 {
  97     const SSL_CIPHER *cp;
  98
  99     cp = ssl3_get_cipher_by_char(p);
 100 #ifndef OPENSSL_NO_SSL2
 101     if (cp == NULL)
 102         cp = ssl2_get_cipher_by_char(p);
 103 #endif
 104     return (cp);
 105 }
 106
 107 int ssl23_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p)
 108 {
 109     long l;
 110
 111     /* We can write SSLv2 and SSLv3 ciphers */
 112     /* but no ECC ciphers */
 113     if (c->algorithm_mkey == SSL_kECDHr ||
 114         c->algorithm_mkey == SSL_kECDHe ||
 115         c->algorithm_mkey == SSL_kEECDH ||
 116         c->algorithm_auth == SSL_aECDH || c->algorithm_auth == SSL_aECDSA)
 117         return 0;
 118     if (p != NULL) {
 119         l = c->id;
 120         p[0] = ((unsigned char)(l >> 16L)) & 0xFF;
 121         p[1] = ((unsigned char)(l >> 8L)) & 0xFF;
 122         p[2] = ((unsigned char)(l)) & 0xFF;
 123     }
 124     return (3);
 125 }
 126
 127 int ssl23_read(SSL *s, void *buf, int len)
 128 {
 129     int n;
 130
 131     clear_sys_error();
 132     if (SSL_in_init(s) && (!s->in_handshake)) {
 133         n = s->handshake_func(s);
 134         if (n < 0)
 135             return (n);
 136         if (n == 0) {
 137             SSLerr(SSL_F_SSL23_READ, SSL_R_SSL_HANDSHAKE_FAILURE);
 138             return (-1);
 139         }
 140         return (SSL_read(s, buf, len));
 141     } else {
 142         ssl_undefined_function(s);
 143         return (-1);
 144     }
 145 }
 146
 147 int ssl23_peek(SSL *s, void *buf, int len)
 148 {
 149     int n;
 150
 151     clear_sys_error();
 152     if (SSL_in_init(s) && (!s->in_handshake)) {
 153         n = s->handshake_func(s);
 154         if (n < 0)
 155             return (n);
 156         if (n == 0) {
 157             SSLerr(SSL_F_SSL23_PEEK, SSL_R_SSL_HANDSHAKE_FAILURE);
 158             return (-1);
 159         }
 160         return (SSL_peek(s, buf, len));
 161     } else {
 162         ssl_undefined_function(s);
 163         return (-1);
 164     }
 165 }
 166
 167 int ssl23_write(SSL *s, const void *buf, int len)
 168 {
 169     int n;
 170
 171     clear_sys_error();
 172     if (SSL_in_init(s) && (!s->in_handshake)) {
 173         n = s->handshake_func(s);
 174         if (n < 0)
 175             return (n);
 176         if (n == 0) {
 177             SSLerr(SSL_F_SSL23_WRITE, SSL_R_SSL_HANDSHAKE_FAILURE);
 178             return (-1);
 179         }
 180         return (SSL_write(s, buf, len));
 181     } else {
 182         ssl_undefined_function(s);
 183         return (-1);
 184     }
 185 }