s23_lib.c revision 59194
155714Skris/* ssl/s23_lib.c */ 255714Skris/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 355714Skris * All rights reserved. 455714Skris * 555714Skris * This package is an SSL implementation written 655714Skris * by Eric Young (eay@cryptsoft.com). 755714Skris * The implementation was written so as to conform with Netscapes SSL. 855714Skris * 955714Skris * This library is free for commercial and non-commercial use as long as 1055714Skris * the following conditions are aheared to. The following conditions 1155714Skris * apply to all code found in this distribution, be it the RC4, RSA, 1255714Skris * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1355714Skris * included with this distribution is covered by the same copyright terms 1455714Skris * except that the holder is Tim Hudson (tjh@cryptsoft.com). 1555714Skris * 1655714Skris * Copyright remains Eric Young's, and as such any Copyright notices in 1755714Skris * the code are not to be removed. 1855714Skris * If this package is used in a product, Eric Young should be given attribution 1955714Skris * as the author of the parts of the library used. 2055714Skris * This can be in the form of a textual message at program startup or 2155714Skris * in documentation (online or textual) provided with the package. 2255714Skris * 2355714Skris * Redistribution and use in source and binary forms, with or without 2455714Skris * modification, are permitted provided that the following conditions 2555714Skris * are met: 2655714Skris * 1. Redistributions of source code must retain the copyright 2755714Skris * notice, this list of conditions and the following disclaimer. 2855714Skris * 2. Redistributions in binary form must reproduce the above copyright 2955714Skris * notice, this list of conditions and the following disclaimer in the 3055714Skris * documentation and/or other materials provided with the distribution. 3155714Skris * 3. All advertising materials mentioning features or use of this software 3255714Skris * must display the following acknowledgement: 3355714Skris * "This product includes cryptographic software written by 3455714Skris * Eric Young (eay@cryptsoft.com)" 3555714Skris * The word 'cryptographic' can be left out if the rouines from the library 3655714Skris * being used are not cryptographic related :-). 3755714Skris * 4. If you include any Windows specific code (or a derivative thereof) from 3855714Skris * the apps directory (application code) you must include an acknowledgement: 3955714Skris * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 4055714Skris * 4155714Skris * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4255714Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4355714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 4455714Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 4555714Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4655714Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4755714Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4855714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 4955714Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5055714Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5155714Skris * SUCH DAMAGE. 5255714Skris * 5355714Skris * The licence and distribution terms for any publically available version or 5455714Skris * derivative of this code cannot be changed. i.e. this code cannot simply be 5555714Skris * copied and put under another distribution licence 5655714Skris * [including the GNU Public Licence.] 5755949Skris * 5855949Skris * $FreeBSD: head/crypto/openssl/ssl/s23_lib.c 59194 2000-04-13 07:15:03Z kris $ 5955714Skris */ 6055714Skris 6155714Skris#include <stdio.h> 6255714Skris#include <openssl/objects.h> 6355714Skris#include "ssl_locl.h" 6455714Skris 6555714Skrisstatic int ssl23_num_ciphers(void ); 6655714Skrisstatic SSL_CIPHER *ssl23_get_cipher(unsigned int u); 6755714Skrisstatic int ssl23_read(SSL *s, void *buf, int len); 6855714Skrisstatic int ssl23_write(SSL *s, const void *buf, int len); 6955714Skrisstatic long ssl23_default_timeout(void ); 7055714Skrisstatic int ssl23_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p); 7155714Skrisstatic SSL_CIPHER *ssl23_get_cipher_by_char(const unsigned char *p); 7259194Skrisconst char *SSL23_version_str="SSLv2/3 compatibility" OPENSSL_VERSION_PTEXT; 7355714Skris 7455714Skrisstatic SSL_METHOD SSLv23_data= { 7555714Skris TLS1_VERSION, 7655714Skris tls1_new, 7755714Skris tls1_clear, 7855714Skris tls1_free, 7955714Skris ssl_undefined_function, 8055714Skris ssl_undefined_function, 8155714Skris ssl23_read, 8255714Skris (int (*)(struct ssl_st *, char *, int))ssl_undefined_function, 8355714Skris ssl23_write, 8455714Skris ssl_undefined_function, 8555714Skris ssl_undefined_function, 8655714Skris ssl_ok, 8755714Skris ssl3_ctrl, 8855714Skris ssl3_ctx_ctrl, 8955714Skris ssl23_get_cipher_by_char, 9055714Skris ssl23_put_cipher_by_char, 9155714Skris ssl_undefined_function, 9255714Skris ssl23_num_ciphers, 9355714Skris ssl23_get_cipher, 9455714Skris ssl_bad_method, 9555714Skris ssl23_default_timeout, 9655714Skris &ssl3_undef_enc_method, 9759194Skris ssl_undefined_function, 9859194Skris ssl3_callback_ctrl, 9959194Skris ssl3_ctx_callback_ctrl, 10055714Skris }; 10155714Skris 10255714Skrisstatic long ssl23_default_timeout(void) 10355714Skris { 10455714Skris return(300); 10555714Skris } 10655714Skris 10755714SkrisSSL_METHOD *sslv23_base_method(void) 10855714Skris { 10955714Skris return(&SSLv23_data); 11055714Skris } 11155714Skris 11255714Skrisstatic int ssl23_num_ciphers(void) 11355714Skris { 11455949Skris return(ssl3_num_ciphers() 11555949Skris#ifndef NO_SSL2 11659194Skris + ssl2_num_ciphers() 11755949Skris#endif 11859194Skris ); 11955714Skris } 12055714Skris 12155714Skrisstatic SSL_CIPHER *ssl23_get_cipher(unsigned int u) 12255714Skris { 12355714Skris unsigned int uu=ssl3_num_ciphers(); 12455714Skris 12555714Skris if (u < uu) 12655714Skris return(ssl3_get_cipher(u)); 12755714Skris else 12855949Skris#ifndef NO_SSL2 12955714Skris return(ssl2_get_cipher(u-uu)); 13055949Skris#else 13155949Skris return(NULL); 13255949Skris#endif 13355714Skris } 13455714Skris 13555714Skris/* This function needs to check if the ciphers required are actually 13655714Skris * available */ 13755714Skrisstatic SSL_CIPHER *ssl23_get_cipher_by_char(const unsigned char *p) 13855714Skris { 13955714Skris SSL_CIPHER c,*cp; 14055714Skris unsigned long id; 14155714Skris int n; 14255714Skris 14355714Skris n=ssl3_num_ciphers(); 14455714Skris id=0x03000000|((unsigned long)p[0]<<16L)| 14555714Skris ((unsigned long)p[1]<<8L)|(unsigned long)p[2]; 14655714Skris c.id=id; 14755714Skris cp=ssl3_get_cipher_by_char(p); 14855949Skris#ifndef NO_SSL2 14955714Skris if (cp == NULL) 15055714Skris cp=ssl2_get_cipher_by_char(p); 15155949Skris#endif 15255714Skris return(cp); 15355714Skris } 15455714Skris 15555714Skrisstatic int ssl23_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p) 15655714Skris { 15755714Skris long l; 15855714Skris 15955714Skris /* We can write SSLv2 and SSLv3 ciphers */ 16055714Skris if (p != NULL) 16155714Skris { 16255714Skris l=c->id; 16355714Skris p[0]=((unsigned char)(l>>16L))&0xFF; 16455714Skris p[1]=((unsigned char)(l>> 8L))&0xFF; 16555714Skris p[2]=((unsigned char)(l ))&0xFF; 16655714Skris } 16755714Skris return(3); 16855714Skris } 16955714Skris 17055714Skrisstatic int ssl23_read(SSL *s, void *buf, int len) 17155714Skris { 17255714Skris int n; 17355714Skris 17455714Skris#if 0 17555714Skris if (s->shutdown & SSL_RECEIVED_SHUTDOWN) 17655714Skris { 17755714Skris s->rwstate=SSL_NOTHING; 17855714Skris return(0); 17955714Skris } 18055714Skris#endif 18155714Skris clear_sys_error(); 18255714Skris if (SSL_in_init(s) && (!s->in_handshake)) 18355714Skris { 18455714Skris n=s->handshake_func(s); 18555714Skris if (n < 0) return(n); 18655714Skris if (n == 0) 18755714Skris { 18855714Skris SSLerr(SSL_F_SSL23_READ,SSL_R_SSL_HANDSHAKE_FAILURE); 18955714Skris return(-1); 19055714Skris } 19155714Skris return(SSL_read(s,buf,len)); 19255714Skris } 19355714Skris else 19455714Skris { 19555714Skris ssl_undefined_function(s); 19655714Skris return(-1); 19755714Skris } 19855714Skris } 19955714Skris 20055714Skrisstatic int ssl23_write(SSL *s, const void *buf, int len) 20155714Skris { 20255714Skris int n; 20355714Skris 20455714Skris#if 0 20555714Skris if (s->shutdown & SSL_SENT_SHUTDOWN) 20655714Skris { 20755714Skris s->rwstate=SSL_NOTHING; 20855714Skris return(0); 20955714Skris } 21055714Skris#endif 21155714Skris clear_sys_error(); 21255714Skris if (SSL_in_init(s) && (!s->in_handshake)) 21355714Skris { 21455714Skris n=s->handshake_func(s); 21555714Skris if (n < 0) return(n); 21655714Skris if (n == 0) 21755714Skris { 21855714Skris SSLerr(SSL_F_SSL23_WRITE,SSL_R_SSL_HANDSHAKE_FAILURE); 21955714Skris return(-1); 22055714Skris } 22155714Skris return(SSL_write(s,buf,len)); 22255714Skris } 22355714Skris else 22455714Skris { 22555714Skris ssl_undefined_function(s); 22655714Skris return(-1); 22755714Skris } 22855714Skris } 229