s23_lib.c revision 238405 
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/* This function needs to check if the ciphers required are actually
92 * available */
93const 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
105int 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
120int 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
143int 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
166int 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