1 /* ssl/ssl_task.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 /* VMS */

    60 /*

    61  * DECnet object for servicing SSL.  We accept the inbound and speak a

    62  * simple protocol for multiplexing the 2 data streams (application and

    63  * ssl data) over this logical link.

    64  *

    65  * Logical names:

    66  *    SSL_CIPHER	Defines a list of cipher specifications the server

    67  *			will support in order of preference.

    68  *    SSL_SERVER_CERTIFICATE

    69  *			Points to PEM (privacy enhanced mail) file that

    70  *			contains the server certificate and private password.

    71  *    SYS$NET		Logical created by netserver.exe as hook for completing

    72  *			DECnet logical link.

    73  *

    74  * Each NSP message sent over the DECnet link has the following structure:

    75  *    struct rpc_msg { 

    76  *      char channel;

    77  *      char function;

    78  *      short length;

    79  *      char data[MAX_DATA];

    80  *    } msg;

    81  *

    82  * The channel field designates the virtual data stream this message applies

    83  * to and is one of:

    84  *   A - Application data (payload).

    85  *   R - Remote client connection that initiated the SSL connection.  Encrypted

    86  *       data is sent over this connection.

    87  *   G - General data, reserved for future use.

    88  *

    89  * The data streams are half-duplex read/write and have following functions:

    90  *   G - Get, requests that up to msg.length bytes of data be returned.  The

    91  *       data is returned in the next 'C' function response that matches the

    92  *       requesting channel.

    93  *   P - Put, requests that the first msg.length bytes of msg.data be appended

    94  *       to the designated stream.

    95  *   C - Confirms a get or put.  Every get and put will get a confirm response,

    96  *       you cannot initiate another function on a channel until the previous

    97  *       operation has been confirmed.

    98  *

    99  *  The 2 channels may interleave their operations, for example:

   100  *        Server msg           Client msg

   101  *         A, Get, 4092          ---->

   102  *                               <----  R, get, 4092

   103  *         R, Confirm, {hello}   ---->

   104  *                               <----  R, put, {srv hello}

   105  *         R, Confirm, 0         ---->

   106  *                               .		(SSL handshake completed)

   107  *                               .              (read first app data).

   108  *                               <----  A, confirm, {http data}

   109  *         A, Put, {http data}   ---->

   110  *                               <----  A, confirm, 0

   111  *

   112  *  The length field is not permitted to be larger that 4092 bytes.

   113  *

   114  * Author: Dave Jones

   115  * Date:   22-JUL-1996

   116  */

   117 #include <stdlib.h>

   118 #include <stdio.h>

   119 #include <iodef.h>		/* VMS IO$_ definitions */

   120 #include <descrip.h>		/* VMS string descriptors */

   121 extern int SYS$QIOW(), SYS$ASSIGN();

   122 int LIB$INIT_TIMER(), LIB$SHOW_TIMER();

   123 

   124 #include <string.h>		/* from ssltest.c */

   125 #include <errno.h>

   126 

   127 #include "e_os.h"

   128 

   129 #include <openssl/buffer.h>

   130 #include <openssl/x509.h>

   131 #include <openssl/ssl.h>

   132 #include <openssl/err.h>

   133 

   134 int MS_CALLBACK verify_callback(int ok, X509 *xs, X509 *xi, int depth,

   135 	int error);

   136 BIO *bio_err=NULL;

   137 BIO *bio_stdout=NULL;

   138 BIO_METHOD *BIO_s_rtcp();

   139 

   140 static char *cipher=NULL;

   141 int verbose=1;

   142 #ifdef FIONBIO

   143 static int s_nbio=0;

   144 #endif

   145 #define TEST_SERVER_CERT "SSL_SERVER_CERTIFICATE"

   146 /*************************************************************************/

   147 struct rpc_msg {		/* Should have member alignment inhibited */

   148    char channel;		/* 'A'-app data. 'R'-remote client 'G'-global */

   149    char function;		/* 'G'-get, 'P'-put, 'C'-confirm, 'X'-close */

   150    unsigned short int length;	/* Amount of data returned or max to return */

   151    char data[4092];		/* variable data */

   152 };

   153 #define RPC_HDR_SIZE (sizeof(struct rpc_msg) - 4092)

   154 

   155 static $DESCRIPTOR(sysnet, "SYS$NET");

   156 typedef unsigned short io_channel;

   157 

   158 struct io_status {

   159     unsigned short status;

   160     unsigned short count;

   161     unsigned long stsval;

   162 };

   163 int doit(io_channel chan, SSL_CTX *s_ctx );

   164 /*****************************************************************************/

   165 /* Decnet I/O routines.

   166  */

   167 static int get ( io_channel chan, char *buffer, int maxlen, int *length )

   168 {

   169     int status;

   170     struct io_status iosb;

   171     status = SYS$QIOW ( 0, chan, IO$_READVBLK, &iosb, 0, 0,

   172 	buffer, maxlen, 0, 0, 0, 0 );

   173     if ( (status&1) == 1 ) status = iosb.status;

   174     if ( (status&1) == 1 ) *length = iosb.count;

   175     return status;

   176 }

   177 

   178 static int put ( io_channel chan, char *buffer, int length )

   179 {

   180     int status;

   181     struct io_status iosb;

   182     status = SYS$QIOW ( 0, chan, IO$_WRITEVBLK, &iosb, 0, 0,

   183 	buffer, length, 0, 0, 0, 0 );

   184     if ( (status&1) == 1 ) status = iosb.status;

   185     return status;

   186 }

   187 /***************************************************************************/

   188 /* Handle operations on the 'G' channel.

   189  */

   190 static int general_request ( io_channel chan, struct rpc_msg *msg, int length )

   191 {

   192     return 48;

   193 }

   194 /***************************************************************************/

   195 int main ( int argc, char **argv )

   196 {

   197     int status, length;

   198     io_channel chan;

   199     struct rpc_msg msg;

   200 

   201 	char *CApath=NULL,*CAfile=NULL;

   202 	int badop=0;

   203 	int ret=1;

   204 	int client_auth=0;

   205 	int server_auth=0;

   206 	SSL_CTX *s_ctx=NULL;

   207     /*

   208      * Confirm logical link with initiating client.

   209      */

   210     LIB$INIT_TIMER();

   211     status = SYS$ASSIGN ( &sysnet, &chan, 0, 0, 0 );

   212     printf("status of assign to SYS$NET: %d\n", status );

   213     /*

   214      * Initialize standard out and error files.

   215      */

   216 	if (bio_err == NULL)

   217 		if ((bio_err=BIO_new(BIO_s_file())) != NULL)

   218 			BIO_set_fp(bio_err,stderr,BIO_NOCLOSE);

   219 	if (bio_stdout == NULL)

   220 		if ((bio_stdout=BIO_new(BIO_s_file())) != NULL)

   221 			BIO_set_fp(bio_stdout,stdout,BIO_NOCLOSE);

   222     /*

   223      * get the preferred cipher list and other initialization

   224      */

   225 	if (cipher == NULL) cipher=getenv("SSL_CIPHER");

   226 	printf("cipher list: %s\n", cipher ? cipher : "{undefined}" );

   227 

   228 	SSL_load_error_strings();

   229 	OpenSSL_add_all_algorithms();

   230 

   231 /* DRM, this was the original, but there is no such thing as SSLv2()

   232 	s_ctx=SSL_CTX_new(SSLv2());

   233 */

   234 	s_ctx=SSL_CTX_new(SSLv2_server_method());

   235 

   236 	if (s_ctx == NULL) goto end;

   237 

   238 	SSL_CTX_use_certificate_file(s_ctx,TEST_SERVER_CERT,SSL_FILETYPE_PEM);

   239 	SSL_CTX_use_RSAPrivateKey_file(s_ctx,TEST_SERVER_CERT,SSL_FILETYPE_PEM);

   240 	printf("Loaded server certificate: '%s'\n", TEST_SERVER_CERT );

   241 

   242     /*

   243      * Take commands from client until bad status.

   244      */

   245     LIB$SHOW_TIMER();

   246     status = doit ( chan, s_ctx );

   247     LIB$SHOW_TIMER();

   248     /*

   249      * do final cleanup and exit.

   250      */

   251 end:

   252 	if (s_ctx != NULL) SSL_CTX_free(s_ctx);

   253     LIB$SHOW_TIMER();

   254     return 1;

   255 }

   256 

   257 int doit(io_channel chan, SSL_CTX *s_ctx )

   258 {

   259     int status, length, link_state;

   260      struct rpc_msg msg;

   261 

   262 	SSL *s_ssl=NULL;

   263 	BIO *c_to_s=NULL;

   264 	BIO *s_to_c=NULL;

   265 	BIO *c_bio=NULL;

   266 	BIO *s_bio=NULL;

   267 	int i;

   268 	int done=0;

   269 

   270 	s_ssl=SSL_new(s_ctx);

   271 	if (s_ssl == NULL) goto err;

   272 

   273 	c_to_s=BIO_new(BIO_s_rtcp());

   274 	s_to_c=BIO_new(BIO_s_rtcp());

   275 	if ((s_to_c == NULL) || (c_to_s == NULL)) goto err;

   276 /* original, DRM 24-SEP-1997

   277 	BIO_set_fd ( c_to_s, "", chan );

   278 	BIO_set_fd ( s_to_c, "", chan );

   279 */

   280 	BIO_set_fd ( c_to_s, 0, chan );

   281 	BIO_set_fd ( s_to_c, 0, chan );

   282 

   283 	c_bio=BIO_new(BIO_f_ssl());

   284 	s_bio=BIO_new(BIO_f_ssl());

   285 	if ((c_bio == NULL) || (s_bio == NULL)) goto err;

   286 

   287 	SSL_set_accept_state(s_ssl);

   288 	SSL_set_bio(s_ssl,c_to_s,s_to_c);

   289 	BIO_set_ssl(s_bio,s_ssl,BIO_CLOSE);

   290 

   291 	/* We can always do writes */

   292 	printf("Begin doit main loop\n");

   293 	/*

   294 	 * Link states: 0-idle, 1-read pending, 2-write pending, 3-closed.

   295 	 */

   296 	for (link_state = 0; link_state < 3; ) {

   297 	    /*

   298 	     * Wait for remote end to request data action on A channel.

   299 	     */

   300 	    while ( link_state == 0 ) {

   301 		status = get ( chan, (char *) &msg, sizeof(msg), &length );

   302 		if ( (status&1) == 0 ) {

   303 		    printf("Error in main loop get: %d\n", status );

   304 		    link_state = 3;

   305 		    break;

   306 		}

   307 	   	if ( length < RPC_HDR_SIZE ) {

   308 		    printf("Error in main loop get size: %d\n", length );

   309 		    break;

   310 		    link_state = 3;

   311 		}

   312 	   	if ( msg.channel != 'A' ) {

   313 		    printf("Error in main loop, unexpected channel: %c\n", 

   314 			msg.channel );

   315 		    break;

   316 		    link_state = 3;

   317 		}

   318 		if ( msg.function == 'G' ) {

   319 		    link_state = 1;

   320 		} else if ( msg.function == 'P' ) {

   321 		    link_state = 2;	/* write pending */

   322 		} else if ( msg.function == 'X' ) {

   323 		    link_state = 3;

   324 		} else {

   325 		    link_state = 3;

   326 		}

   327 	    }

   328 	    if ( link_state == 1 ) {

   329 		i = BIO_read ( s_bio, msg.data, msg.length );

   330 		if ( i < 0 ) link_state = 3;

   331 		else {

   332 		    msg.channel = 'A';

   333 		    msg.function = 'C';		/* confirm */

   334 		    msg.length = i;

   335 		    status = put ( chan, (char *) &msg, i+RPC_HDR_SIZE );

   336 		    if ( (status&1) == 0 ) break;

   337 		    link_state = 0;

   338 		}

   339 	    } else if ( link_state == 2 ) {

   340 		i = BIO_write ( s_bio, msg.data, msg.length );

   341 		if ( i < 0 ) link_state = 3;

   342 		else {

   343 		    msg.channel = 'A';

   344 		    msg.function = 'C';		/* confirm */

   345 		    msg.length = 0;

   346 		    status = put ( chan, (char *) &msg, RPC_HDR_SIZE );

   347 		    if ( (status&1) == 0 ) break;

   348 		    link_state = 0;

   349 		}

   350 	    }

   351 	}

   352 	fprintf(stdout,"DONE\n");

   353 err:

   354 	/* We have to set the BIO's to NULL otherwise they will be

   355 	 * free()ed twice.  Once when th s_ssl is SSL_free()ed and

   356 	 * again when c_ssl is SSL_free()ed.

   357 	 * This is a hack required because s_ssl and c_ssl are sharing the same

   358 	 * BIO structure and SSL_set_bio() and SSL_free() automatically

   359 	 * BIO_free non NULL entries.

   360 	 * You should not normally do this or be required to do this */

   361 	s_ssl->rbio=NULL;

   362 	s_ssl->wbio=NULL;

   363 

   364 	if (c_to_s != NULL) BIO_free(c_to_s);

   365 	if (s_to_c != NULL) BIO_free(s_to_c);

   366 	if (c_bio != NULL) BIO_free(c_bio);

   367 	if (s_bio != NULL) BIO_free(s_bio);

   368 	return(0);

   369 }