370 lines
12 KiB
C
370 lines
12 KiB
C
/* ssl/ssl_task.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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/* VMS */
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/*
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* DECnet object for servicing SSL. We accept the inbound and speak a
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* simple protocol for multiplexing the 2 data streams (application and
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* ssl data) over this logical link.
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*
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* Logical names:
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* SSL_CIPHER Defines a list of cipher specifications the server
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* will support in order of preference.
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* SSL_SERVER_CERTIFICATE
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* Points to PEM (privacy enhanced mail) file that
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* contains the server certificate and private password.
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* SYS$NET Logical created by netserver.exe as hook for completing
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* DECnet logical link.
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*
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* Each NSP message sent over the DECnet link has the following structure:
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* struct rpc_msg {
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* char channel;
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* char function;
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* short length;
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* char data[MAX_DATA];
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* } msg;
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*
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* The channel field designates the virtual data stream this message applies
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* to and is one of:
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* A - Application data (payload).
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* R - Remote client connection that initiated the SSL connection. Encrypted
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* data is sent over this connection.
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* G - General data, reserved for future use.
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*
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* The data streams are half-duplex read/write and have following functions:
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* G - Get, requests that up to msg.length bytes of data be returned. The
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* data is returned in the next 'C' function response that matches the
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* requesting channel.
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* P - Put, requests that the first msg.length bytes of msg.data be appended
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* to the designated stream.
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* C - Confirms a get or put. Every get and put will get a confirm response,
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* you cannot initiate another function on a channel until the previous
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* operation has been confirmed.
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*
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* The 2 channels may interleave their operations, for example:
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* Server msg Client msg
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* A, Get, 4092 ---->
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* <---- R, get, 4092
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* R, Confirm, {hello} ---->
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* <---- R, put, {srv hello}
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* R, Confirm, 0 ---->
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* . (SSL handshake completed)
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* . (read first app data).
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* <---- A, confirm, {http data}
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* A, Put, {http data} ---->
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* <---- A, confirm, 0
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*
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* The length field is not permitted to be larger that 4092 bytes.
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*
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* Author: Dave Jones
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* Date: 22-JUL-1996
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <iodef.h> /* VMS IO$_ definitions */
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#include <descrip.h> /* VMS string descriptors */
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extern int SYS$QIOW(), SYS$ASSIGN();
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int LIB$INIT_TIMER(), LIB$SHOW_TIMER();
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#include <string.h> /* from ssltest.c */
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#include <errno.h>
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#include "e_os.h"
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#include <openssl/buffer.h>
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#include <openssl/x509.h>
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#include <openssl/ssl.h>
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#include <openssl/err.h>
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int MS_CALLBACK verify_callback(int ok, X509 *xs, X509 *xi, int depth,
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int error);
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BIO *bio_err=NULL;
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BIO *bio_stdout=NULL;
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BIO_METHOD *BIO_s_rtcp();
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static char *cipher=NULL;
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int verbose=1;
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#ifdef FIONBIO
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static int s_nbio=0;
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#endif
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#define TEST_SERVER_CERT "SSL_SERVER_CERTIFICATE"
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/*************************************************************************/
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struct rpc_msg { /* Should have member alignment inhibited */
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char channel; /* 'A'-app data. 'R'-remote client 'G'-global */
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char function; /* 'G'-get, 'P'-put, 'C'-confirm, 'X'-close */
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unsigned short int length; /* Amount of data returned or max to return */
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char data[4092]; /* variable data */
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};
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#define RPC_HDR_SIZE (sizeof(struct rpc_msg) - 4092)
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static $DESCRIPTOR(sysnet, "SYS$NET");
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typedef unsigned short io_channel;
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struct io_status {
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unsigned short status;
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unsigned short count;
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unsigned long stsval;
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};
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int doit(io_channel chan, SSL_CTX *s_ctx );
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/*****************************************************************************/
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/* Decnet I/O routines.
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*/
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static int get ( io_channel chan, char *buffer, int maxlen, int *length )
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{
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int status;
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struct io_status iosb;
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status = SYS$QIOW ( 0, chan, IO$_READVBLK, &iosb, 0, 0,
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buffer, maxlen, 0, 0, 0, 0 );
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if ( (status&1) == 1 ) status = iosb.status;
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if ( (status&1) == 1 ) *length = iosb.count;
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return status;
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}
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static int put ( io_channel chan, char *buffer, int length )
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{
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int status;
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struct io_status iosb;
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status = SYS$QIOW ( 0, chan, IO$_WRITEVBLK, &iosb, 0, 0,
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buffer, length, 0, 0, 0, 0 );
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if ( (status&1) == 1 ) status = iosb.status;
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return status;
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}
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/***************************************************************************/
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/* Handle operations on the 'G' channel.
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*/
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static int general_request ( io_channel chan, struct rpc_msg *msg, int length )
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{
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return 48;
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}
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/***************************************************************************/
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int main ( int argc, char **argv )
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{
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int status, length;
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io_channel chan;
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struct rpc_msg msg;
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char *CApath=NULL,*CAfile=NULL;
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int badop=0;
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int ret=1;
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int client_auth=0;
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int server_auth=0;
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SSL_CTX *s_ctx=NULL;
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/*
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* Confirm logical link with initiating client.
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*/
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LIB$INIT_TIMER();
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status = SYS$ASSIGN ( &sysnet, &chan, 0, 0, 0 );
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printf("status of assign to SYS$NET: %d\n", status );
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/*
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* Initialize standard out and error files.
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*/
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if (bio_err == NULL)
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if ((bio_err=BIO_new(BIO_s_file())) != NULL)
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BIO_set_fp(bio_err,stderr,BIO_NOCLOSE);
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if (bio_stdout == NULL)
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if ((bio_stdout=BIO_new(BIO_s_file())) != NULL)
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BIO_set_fp(bio_stdout,stdout,BIO_NOCLOSE);
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/*
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* get the preferred cipher list and other initialization
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*/
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if (cipher == NULL) cipher=getenv("SSL_CIPHER");
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printf("cipher list: %s\n", cipher ? cipher : "{undefined}" );
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SSL_load_error_strings();
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OpenSSL_add_all_algorithms();
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/* DRM, this was the original, but there is no such thing as SSLv2()
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s_ctx=SSL_CTX_new(SSLv2());
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*/
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s_ctx=SSL_CTX_new(SSLv2_server_method());
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if (s_ctx == NULL) goto end;
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SSL_CTX_use_certificate_file(s_ctx,TEST_SERVER_CERT,SSL_FILETYPE_PEM);
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SSL_CTX_use_RSAPrivateKey_file(s_ctx,TEST_SERVER_CERT,SSL_FILETYPE_PEM);
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printf("Loaded server certificate: '%s'\n", TEST_SERVER_CERT );
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/*
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* Take commands from client until bad status.
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*/
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LIB$SHOW_TIMER();
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status = doit ( chan, s_ctx );
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LIB$SHOW_TIMER();
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/*
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* do final cleanup and exit.
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*/
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end:
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if (s_ctx != NULL) SSL_CTX_free(s_ctx);
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LIB$SHOW_TIMER();
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return 1;
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}
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int doit(io_channel chan, SSL_CTX *s_ctx )
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{
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int status, length, link_state;
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struct rpc_msg msg;
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SSL *s_ssl=NULL;
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BIO *c_to_s=NULL;
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BIO *s_to_c=NULL;
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BIO *c_bio=NULL;
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BIO *s_bio=NULL;
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int i;
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int done=0;
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s_ssl=SSL_new(s_ctx);
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if (s_ssl == NULL) goto err;
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c_to_s=BIO_new(BIO_s_rtcp());
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s_to_c=BIO_new(BIO_s_rtcp());
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if ((s_to_c == NULL) || (c_to_s == NULL)) goto err;
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/* original, DRM 24-SEP-1997
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BIO_set_fd ( c_to_s, "", chan );
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BIO_set_fd ( s_to_c, "", chan );
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*/
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BIO_set_fd ( c_to_s, 0, chan );
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BIO_set_fd ( s_to_c, 0, chan );
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c_bio=BIO_new(BIO_f_ssl());
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s_bio=BIO_new(BIO_f_ssl());
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if ((c_bio == NULL) || (s_bio == NULL)) goto err;
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SSL_set_accept_state(s_ssl);
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SSL_set_bio(s_ssl,c_to_s,s_to_c);
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BIO_set_ssl(s_bio,s_ssl,BIO_CLOSE);
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/* We can always do writes */
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printf("Begin doit main loop\n");
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/*
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* Link states: 0-idle, 1-read pending, 2-write pending, 3-closed.
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*/
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for (link_state = 0; link_state < 3; ) {
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/*
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* Wait for remote end to request data action on A channel.
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*/
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while ( link_state == 0 ) {
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status = get ( chan, (char *) &msg, sizeof(msg), &length );
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if ( (status&1) == 0 ) {
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printf("Error in main loop get: %d\n", status );
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link_state = 3;
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break;
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}
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if ( length < RPC_HDR_SIZE ) {
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printf("Error in main loop get size: %d\n", length );
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break;
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link_state = 3;
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}
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if ( msg.channel != 'A' ) {
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printf("Error in main loop, unexpected channel: %c\n",
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msg.channel );
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break;
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link_state = 3;
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}
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if ( msg.function == 'G' ) {
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link_state = 1;
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} else if ( msg.function == 'P' ) {
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link_state = 2; /* write pending */
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} else if ( msg.function == 'X' ) {
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link_state = 3;
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} else {
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link_state = 3;
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}
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}
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if ( link_state == 1 ) {
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i = BIO_read ( s_bio, msg.data, msg.length );
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if ( i < 0 ) link_state = 3;
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else {
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msg.channel = 'A';
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msg.function = 'C'; /* confirm */
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msg.length = i;
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status = put ( chan, (char *) &msg, i+RPC_HDR_SIZE );
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if ( (status&1) == 0 ) break;
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link_state = 0;
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}
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} else if ( link_state == 2 ) {
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i = BIO_write ( s_bio, msg.data, msg.length );
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if ( i < 0 ) link_state = 3;
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else {
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msg.channel = 'A';
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msg.function = 'C'; /* confirm */
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msg.length = 0;
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status = put ( chan, (char *) &msg, RPC_HDR_SIZE );
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if ( (status&1) == 0 ) break;
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link_state = 0;
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}
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}
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}
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fprintf(stdout,"DONE\n");
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err:
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/* We have to set the BIO's to NULL otherwise they will be
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* free()ed twice. Once when th s_ssl is SSL_free()ed and
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* again when c_ssl is SSL_free()ed.
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* This is a hack required because s_ssl and c_ssl are sharing the same
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* BIO structure and SSL_set_bio() and SSL_free() automatically
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* BIO_free non NULL entries.
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* You should not normally do this or be required to do this */
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s_ssl->rbio=NULL;
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s_ssl->wbio=NULL;
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if (c_to_s != NULL) BIO_free(c_to_s);
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if (s_to_c != NULL) BIO_free(s_to_c);
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if (c_bio != NULL) BIO_free(c_bio);
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if (s_bio != NULL) BIO_free(s_bio);
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return(0);
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}
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