s23_lib.c revision 296341 
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
63long ssl23_default_timeout(void)
64{
65    return (300);
66}
67
68int ssl23_num_ciphers(void)
69{
70    return (ssl3_num_ciphers()
71#ifndef OPENSSL_NO_SSL2
72            + ssl2_num_ciphers()
73#endif
74        );
75}
76
77const 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 */
95const 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
107int 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
127int 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
147int 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
167int 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}
186