+++ /dev/null
--/* ====================================================================
-- * Copyright (c) 2000 The OpenSSL Project. All rights reserved.
-- *
-- * 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 above 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 acknowledgment:
-- * "This product includes software developed by the OpenSSL Project
-- * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
-- *
-- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
-- * endorse or promote products derived from this software without
-- * prior written permission. For written permission, please contact
-- * openssl-core@openssl.org.
-- *
-- * 5. Products derived from this software may not be called "OpenSSL"
-- * nor may "OpenSSL" appear in their names without prior written
-- * permission of the OpenSSL Project.
-- *
-- * 6. Redistributions of any form whatsoever must retain the following
-- * acknowledgment:
-- * "This product includes software developed by the OpenSSL Project
-- * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
-- *
-- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
-- * EXPRESSED 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 OpenSSL PROJECT OR
-- * ITS 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.
-- * ====================================================================
-- *
-- * This product includes cryptographic software written by Eric Young
-- * (eay@cryptsoft.com). This product includes software written by Tim
-- * Hudson (tjh@cryptsoft.com).
-- *
-- */
--
--/*
-- * Nuron, a leader in hardware encryption technology, generously
-- * sponsored the development of this demo by Ben Laurie.
-- *
-- * See http://www.nuron.com/.
-- */
--
--/*
-- * the aim of this demo is to provide a fully working state-machine
-- * style SSL implementation, i.e. one where the main loop acquires
-- * some data, then converts it from or to SSL by feeding it into the
-- * SSL state machine. It then does any I/O required by the state machine
-- * and loops.
-- *
-- * In order to keep things as simple as possible, this implementation
-- * listens on a TCP socket, which it expects to get an SSL connection
-- * on (for example, from s_client) and from then on writes decrypted
-- * data to stdout and encrypts anything arriving on stdin. Verbose
-- * commentary is written to stderr.
-- *
-- * This implementation acts as a server, but it can also be done for a client. */
--
--#include <openssl/ssl.h>
--#include <assert.h>
--#include <unistd.h>
--#include <string.h>
--#include <openssl/err.h>
--#include <sys/types.h>
--#include <sys/socket.h>
--#include <netinet/in.h>
--
--/* die_unless is intended to work like assert, except that it happens
-- always, even if NDEBUG is defined. Use assert as a stopgap. */
--
--#define die_unless(x) assert(x)
--
--typedef struct
-- {
-- SSL_CTX *pCtx;
-- BIO *pbioRead;
-- BIO *pbioWrite;
-- SSL *pSSL;
-- } SSLStateMachine;
--
--void SSLStateMachine_print_error(SSLStateMachine *pMachine,const char *szErr)
-- {
-- unsigned long l;
--
-- fprintf(stderr,"%s\n",szErr);
-- while((l=ERR_get_error()))
-- {
-- char buf[1024];
--
-- ERR_error_string_n(l,buf,sizeof buf);
-- fprintf(stderr,"Error %lx: %s\n",l,buf);
-- }
-- }
--
--SSLStateMachine *SSLStateMachine_new(const char *szCertificateFile,
-- const char *szKeyFile)
-- {
-- SSLStateMachine *pMachine=malloc(sizeof *pMachine);
-- int n;
--
-- die_unless(pMachine);
--
-- pMachine->pCtx=SSL_CTX_new(SSLv23_server_method());
-- die_unless(pMachine->pCtx);
--
-- n=SSL_CTX_use_certificate_file(pMachine->pCtx,szCertificateFile,
-- SSL_FILETYPE_PEM);
-- die_unless(n > 0);
--
-- n=SSL_CTX_use_PrivateKey_file(pMachine->pCtx,szKeyFile,SSL_FILETYPE_PEM);
-- die_unless(n > 0);
--
-- pMachine->pSSL=SSL_new(pMachine->pCtx);
-- die_unless(pMachine->pSSL);
--
-- pMachine->pbioRead=BIO_new(BIO_s_mem());
--
-- pMachine->pbioWrite=BIO_new(BIO_s_mem());
--
-- SSL_set_bio(pMachine->pSSL,pMachine->pbioRead,pMachine->pbioWrite);
--
-- SSL_set_accept_state(pMachine->pSSL);
--
-- return pMachine;
-- }
--
--void SSLStateMachine_read_inject(SSLStateMachine *pMachine,
-- const unsigned char *aucBuf,int nBuf)
-- {
-- int n=BIO_write(pMachine->pbioRead,aucBuf,nBuf);
-- /* If it turns out this assert fails, then buffer the data here
-- * and just feed it in in churn instead. Seems to me that it
-- * should be guaranteed to succeed, though.
-- */
-- assert(n == nBuf);
-- fprintf(stderr,"%d bytes of encrypted data fed to state machine\n",n);
-- }
--
--int SSLStateMachine_read_extract(SSLStateMachine *pMachine,
-- unsigned char *aucBuf,int nBuf)
-- {
-- int n;
--
-- if(!SSL_is_init_finished(pMachine->pSSL))
-- {
-- fprintf(stderr,"Doing SSL_accept\n");
-- n=SSL_accept(pMachine->pSSL);
-- if(n == 0)
-- fprintf(stderr,"SSL_accept returned zero\n");
-- if(n < 0)
-- {
-- int err;
--
-- if((err=SSL_get_error(pMachine->pSSL,n)) == SSL_ERROR_WANT_READ)
-- {
-- fprintf(stderr,"SSL_accept wants more data\n");
-- return 0;
-- }
--
-- SSLStateMachine_print_error(pMachine,"SSL_accept error");
-- exit(7);
-- }
-- return 0;
-- }
--
-- n=SSL_read(pMachine->pSSL,aucBuf,nBuf);
-- if(n < 0)
-- {
-- int err=SSL_get_error(pMachine->pSSL,n);
--
-- if(err == SSL_ERROR_WANT_READ)
-- {
-- fprintf(stderr,"SSL_read wants more data\n");
-- return 0;
-- }
-- }
--
-- fprintf(stderr,"%d bytes of decrypted data read from state machine\n",n);
-- return n;
-- }
--
--int SSLStateMachine_write_can_extract(SSLStateMachine *pMachine)
-- {
-- int n=BIO_pending(pMachine->pbioWrite);
-- if(n)
-- fprintf(stderr,"There is encrypted data available to write\n");
-- else
-- fprintf(stderr,"There is no encrypted data available to write\n");
--
-- return n;
-- }
--
--int SSLStateMachine_write_extract(SSLStateMachine *pMachine,
-- unsigned char *aucBuf,int nBuf)
-- {
-- int n;
--
-- n=BIO_read(pMachine->pbioWrite,aucBuf,nBuf);
-- fprintf(stderr,"%d bytes of encrypted data read from state machine\n",n);
-- return n;
-- }
--
--void SSLStateMachine_write_inject(SSLStateMachine *pMachine,
-- const unsigned char *aucBuf,int nBuf)
-- {
-- int n=SSL_write(pMachine->pSSL,aucBuf,nBuf);
-- /* If it turns out this assert fails, then buffer the data here
-- * and just feed it in in churn instead. Seems to me that it
-- * should be guaranteed to succeed, though.
-- */
-- assert(n == nBuf);
-- fprintf(stderr,"%d bytes of unencrypted data fed to state machine\n",n);
-- }
--
--int OpenSocket(int nPort)
-- {
-- int nSocket;
-- struct sockaddr_in saServer;
-- struct sockaddr_in saClient;
-- int one=1;
-- int nSize;
-- int nFD;
-- int nLen;
--
-- nSocket=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
-- if(nSocket < 0)
-- {
-- perror("socket");
-- exit(1);
-- }
--
-- if(setsockopt(nSocket,SOL_SOCKET,SO_REUSEADDR,(char *)&one,sizeof one) < 0)
-- {
-- perror("setsockopt");
-- exit(2);
-- }
--
-- memset(&saServer,0,sizeof saServer);
-- saServer.sin_family=AF_INET;
-- saServer.sin_port=htons(nPort);
-- nSize=sizeof saServer;
-- if(bind(nSocket,(struct sockaddr *)&saServer,nSize) < 0)
-- {
-- perror("bind");
-- exit(3);
-- }
--
-- if(listen(nSocket,512) < 0)
-- {
-- perror("listen");
-- exit(4);
-- }
--
-- nLen=sizeof saClient;
-- nFD=accept(nSocket,(struct sockaddr *)&saClient,&nLen);
-- if(nFD < 0)
-- {
-- perror("accept");
-- exit(5);
-- }
--
-- fprintf(stderr,"Incoming accepted on port %d\n",nPort);
--
-- return nFD;
-- }
--
--int main(int argc,char **argv)
-- {
-- SSLStateMachine *pMachine;
-- int nPort;
-- int nFD;
-- const char *szCertificateFile;
-- const char *szKeyFile;
--
-- if(argc != 4)
-- {
-- fprintf(stderr,"%s <port> <certificate file> <key file>\n",argv[0]);
-- exit(6);
-- }
--
-- nPort=atoi(argv[1]);
-- szCertificateFile=argv[2];
-- szKeyFile=argv[3];
--
-- SSL_library_init();
-- OpenSSL_add_ssl_algorithms();
-- SSL_load_error_strings();
-- ERR_load_crypto_strings();
--
-- nFD=OpenSocket(nPort);
--
-- pMachine=SSLStateMachine_new(szCertificateFile,szKeyFile);
--
-- for( ; ; )
-- {
-- fd_set rfds,wfds;
-- unsigned char buf[1024];
-- int n;
--
-- FD_ZERO(&rfds);
-- FD_ZERO(&wfds);
--
-- /* Select socket for input */
-- FD_SET(nFD,&rfds);
--
-- /* Select socket for output */
-- if(SSLStateMachine_write_can_extract(pMachine))
-- FD_SET(nFD,&wfds);
--
-- /* Select stdin for input */
-- FD_SET(0,&rfds);
--
-- /* Wait for something to do something */
-- n=select(nFD+1,&rfds,&wfds,NULL,NULL);
-- assert(n > 0);
--
-- /* Socket is ready for input */
-- if(FD_ISSET(nFD,&rfds))
-- {
-- n=read(nFD,buf,sizeof buf);
-- if(n == 0)
-- {
-- fprintf(stderr,"Got EOF on socket\n");
-- exit(0);
-- }
-- assert(n > 0);
--
-- SSLStateMachine_read_inject(pMachine,buf,n);
-- }
--
-- /* FIXME: we should only extract if stdout is ready */
-- n=SSLStateMachine_read_extract(pMachine,buf,n);
-- if(n < 0)
-- {
-- SSLStateMachine_print_error(pMachine,"read extract failed");
-- break;
-- }
-- assert(n >= 0);
-- if(n > 0)
-- {
-- int w;
--
-- w=write(1,buf,n);
-- /* FIXME: we should push back any unwritten data */
-- assert(w == n);
-- }
--
-- /* Socket is ready for output (and therefore we have output to send) */
-- if(FD_ISSET(nFD,&wfds))
-- {
-- int w;
--
-- n=SSLStateMachine_write_extract(pMachine,buf,sizeof buf);
-- assert(n > 0);
--
-- w=write(nFD,buf,n);
-- /* FIXME: we should push back any unwritten data */
-- assert(w == n);
-- }
--
-- /* Stdin is ready for input */
-- if(FD_ISSET(0,&rfds))
-- {
-- n=read(0,buf,sizeof buf);
-- if(n == 0)
-- {
-- fprintf(stderr,"Got EOF on stdin\n");
-- exit(0);
-- }
-- assert(n > 0);
--
-- SSLStateMachine_write_inject(pMachine,buf,n);
-- }
-- }
-- /* not reached */
-- return 0;
-- }
projects / oweals / openssl.git / commitdiff