s23_lib.c revision 279265 
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
68IMPLEMENT_ssl23_meth_func(sslv23_base_method,
69			ssl_undefined_function,
70			ssl_undefined_function,
71			ssl_bad_method)
72
73int ssl23_num_ciphers(void)
74	{
75	return(ssl3_num_ciphers()
76#ifndef OPENSSL_NO_SSL2
77	       + ssl2_num_ciphers()
78#endif
79	    );
80	}
81
82SSL_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 */
98SSL_CIPHER *ssl23_get_cipher_by_char(const unsigned char *p)
99	{
100	SSL_CIPHER *cp;
101
102	cp=ssl3_get_cipher_by_char(p);
103#ifndef OPENSSL_NO_SSL2
104	if (cp == NULL)
105		cp=ssl2_get_cipher_by_char(p);
106#endif
107	return(cp);
108	}
109
110int ssl23_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p)
111	{
112	long l;
113
114	/* We can write SSLv2 and SSLv3 ciphers */
115	/* but no ECC ciphers */
116	if (c->algorithms & (SSL_ECDH|SSL_aECDSA))
117		return 0;
118	if (p != NULL)
119		{
120		l=c->id;
121		p[0]=((unsigned char)(l>>16L))&0xFF;
122		p[1]=((unsigned char)(l>> 8L))&0xFF;
123		p[2]=((unsigned char)(l     ))&0xFF;
124		}
125	return(3);
126	}
127
128int ssl23_read(SSL *s, void *buf, int len)
129	{
130	int n;
131
132	clear_sys_error();
133	if (SSL_in_init(s) && (!s->in_handshake))
134		{
135		n=s->handshake_func(s);
136		if (n < 0) return(n);
137		if (n == 0)
138			{
139			SSLerr(SSL_F_SSL23_READ,SSL_R_SSL_HANDSHAKE_FAILURE);
140			return(-1);
141			}
142		return(SSL_read(s,buf,len));
143		}
144	else
145		{
146		ssl_undefined_function(s);
147		return(-1);
148		}
149	}
150
151int ssl23_peek(SSL *s, void *buf, int len)
152	{
153	int n;
154
155	clear_sys_error();
156	if (SSL_in_init(s) && (!s->in_handshake))
157		{
158		n=s->handshake_func(s);
159		if (n < 0) return(n);
160		if (n == 0)
161			{
162			SSLerr(SSL_F_SSL23_PEEK,SSL_R_SSL_HANDSHAKE_FAILURE);
163			return(-1);
164			}
165		return(SSL_peek(s,buf,len));
166		}
167	else
168		{
169		ssl_undefined_function(s);
170		return(-1);
171		}
172	}
173
174int ssl23_write(SSL *s, const void *buf, int len)
175	{
176	int n;
177
178	clear_sys_error();
179	if (SSL_in_init(s) && (!s->in_handshake))
180		{
181		n=s->handshake_func(s);
182		if (n < 0) return(n);
183		if (n == 0)
184			{
185			SSLerr(SSL_F_SSL23_WRITE,SSL_R_SSL_HANDSHAKE_FAILURE);
186			return(-1);
187			}
188		return(SSL_write(s,buf,len));
189		}
190	else
191		{
192		ssl_undefined_function(s);
193		return(-1);
194		}
195	}
196