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