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openssl/ssl/ssl_task.c

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