crypto/external/bsd/openssl/dist/ssl/ssl_task.c

   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 }