C++ BIO_free函数代码示例

//.........这里部分代码省略.........
			return FALSE;
		}

		if (connect(tcp->sockfd, tmp->ai_addr, tmp->ai_addrlen) < 0) {
			WLog_ERR(TAG, "connect: %s", strerror(errno));
			freeaddrinfo(result);
			return FALSE;
		}
		freeaddrinfo(result);
		tcp->socketBio = BIO_new_socket(tcp->sockfd, BIO_NOCLOSE);

		/* TODO: make sure the handshake is done by querying the bio */
		//		if (BIO_should_retry(tcp->socketBio))
		//          return FALSE;
#endif /* NO_IPV6 */

		if (status <= 0)
		{
#ifdef HAVE_POLL_H
			pollfds.fd = tcp->sockfd;
			pollfds.events = POLLOUT;
			pollfds.revents = 0;
			do
			{
				status = poll(&pollfds, 1, timeout * 1000);
			}
			while ((status < 0) && (errno == EINTR));
#else
			FD_ZERO(&cfds);
			FD_SET(tcp->sockfd, &cfds);

			tv.tv_sec = timeout;
			tv.tv_usec = 0;

			status = _select(tcp->sockfd + 1, NULL, &cfds, NULL, &tv);
#endif
			if (status == 0)
			{
				return FALSE; /* timeout */
			}
		}

		(void)BIO_set_close(tcp->socketBio, BIO_NOCLOSE);
		BIO_free(tcp->socketBio);

		tcp->socketBio = BIO_new(BIO_s_simple_socket());

		if (!tcp->socketBio)
			return FALSE;

		BIO_set_fd(tcp->socketBio, tcp->sockfd, BIO_CLOSE);
	}

	SetEventFileDescriptor(tcp->event, tcp->sockfd);

	freerdp_tcp_get_ip_address(tcp);
	freerdp_tcp_get_mac_address(tcp);

	option_value = 1;
	option_len = sizeof(option_value);

	if (!tcp->ipcSocket)
	{
		if (setsockopt(tcp->sockfd, IPPROTO_TCP, TCP_NODELAY, (void*) &option_value, option_len) < 0)
			WLog_ERR(TAG,  "unable to set TCP_NODELAY");
	}

	/* receive buffer must be a least 32 K */
	if (getsockopt(tcp->sockfd, SOL_SOCKET, SO_RCVBUF, (void*) &option_value, &option_len) == 0)
	{
		if (option_value < (1024 * 32))
		{
			option_value = 1024 * 32;
			option_len = sizeof(option_value);

			if (setsockopt(tcp->sockfd, SOL_SOCKET, SO_RCVBUF, (void*) &option_value, option_len) < 0)
			{
				WLog_ERR(TAG,  "unable to set receive buffer len");
				return FALSE;
			}
		}
	}

	if (!tcp->ipcSocket)
	{
		if (!freerdp_tcp_set_keep_alive_mode(tcp))
			return FALSE;
	}

	tcp->bufferedBio = BIO_new(BIO_s_buffered_socket());

	if (!tcp->bufferedBio)
		return FALSE;

	tcp->bufferedBio->ptr = tcp;

	tcp->bufferedBio = BIO_push(tcp->bufferedBio, tcp->socketBio);

	return TRUE;
}

/* Return value:
 * SSL_OK: the SSL handle is created
 * SSL_ERROR: failed, call ossSSLERRGetError() & ossSSLERRGetErrorMessage() for reason
 */
INT32 ossSSLNewHandle(SSLHandle** handle, SSLContext* ctx, SOCKET sock,
                             const char* initialBytes, INT32 len)
{
   SSLHandle* h = NULL;
   SSL* ssl = NULL;
   BIO* bufferBIO = NULL;
   BIO* socketBIO = NULL;
   INT32 ret = SSL_OK;

   SSL_ASSERT(NULL != handle);
   SSL_ASSERT(NULL != ctx);
   SSL_ASSERT(len >= 0);

   h = (SSLHandle*)OPENSSL_malloc(sizeof(SSLHandle));
   if (NULL == h)
   {
      goto error;
   }
   _SSLHandleInit(h);
   h->sock = sock;

   ssl = SSL_new(ctx);
   if (NULL == ssl)
   {
      goto error;
   }
   h->ssl = ssl;

   if (0 == len)
   {
      /* there is no initial bytes, so we just set the socket to SSL */
      ret = SSL_set_fd(ssl, sock);
      if (!ret)
      {
         goto error;
      }
   }
   else /* len > 0 */
   {
      SSL_ASSERT(NULL != initialBytes);

      /*
       * There are initial SSL bytes, so we should give these bytes to SSL by some way.
       * Here we create a buffer BIO, and put these bytes to it.
       * Then we create a socket BIO, and set a BIO chain to link 
       * the buffer and socket by BIO_push().
       * Finally, we set the buffer to SSL instead of the socket.
       *
       * NOTE: when do SSL operations, it should explicitly flush the buffer.
       */

      bufferBIO = BIO_new(BIO_f_buffer());
      if (NULL == bufferBIO)
      {
         goto error;
      }

      ret = BIO_set_buffer_read_data(bufferBIO, (void*)initialBytes, len);
      if (!ret)
      {
         goto error;
      }

      socketBIO = BIO_new_socket(sock, BIO_NOCLOSE);
      if (NULL == socketBIO)
      {
         goto error;
      }

      /* link socket to the buffer */
      if (NULL == BIO_push(bufferBIO, socketBIO))
      {
         goto error;
      }

      /* SSL_free() will also free bufferBIO,
       * so it's no need to free bufferBIO later when free the SSL handle.
       */
      SSL_set_bio(ssl, bufferBIO, bufferBIO);

      /* hold the bufferBIO pointer so we can flush it when do SSL operations */
      h->bufferBIO = bufferBIO;
   }

   *handle = h;
   ret = SDB_OK;

done:
   return ret;
error:
   if (NULL != bufferBIO)
   {
      BIO_free(bufferBIO);
   }
   if (NULL != socketBIO)
   {
//.........这里部分代码省略.........

void
output_cert_info(X509 *cert, gf_io_t pc)
{
    char    buf[256];
    STORE_S *left,*right;
    gf_io_t spc;
    int len;
        
    left = so_get(CharStar, NULL, EDIT_ACCESS);
    right = so_get(CharStar, NULL, EDIT_ACCESS);
    if(!(left && right))
      return;

    gf_set_so_writec(&spc, left);

    if(!cert->cert_info){
    	gf_puts("Couldn't find certificate info.", spc);
	gf_puts(NEWLINE, spc);
    }
    else{
	gf_puts_uline("Subject (whose certificate it is)", spc);
	gf_puts(NEWLINE, spc);

	output_X509_NAME(cert->cert_info->subject, spc);
	gf_puts(NEWLINE, spc);

	gf_puts_uline("Serial Number", spc);
	gf_puts(NEWLINE, spc);

	snprintf(buf, sizeof(buf), "%ld", ASN1_INTEGER_get(cert->cert_info->serialNumber));
	gf_puts(buf, spc);
	gf_puts(NEWLINE, spc);
	gf_puts(NEWLINE, spc);

	gf_puts_uline("Validity", spc);
	gf_puts(NEWLINE, spc);
    	{
    	    BIO *mb = BIO_new(BIO_s_mem());
	    char iobuf[4096];
	    
	    gf_puts("Not Before: ", spc);

	    (void) BIO_reset(mb);
	    ASN1_UTCTIME_print(mb, cert->cert_info->validity->notBefore);
	    (void) BIO_flush(mb);
	    while((len = BIO_read(mb, iobuf, sizeof(iobuf))) > 0)
	      gf_nputs(iobuf, len, spc);

	    gf_puts(NEWLINE, spc);

	    gf_puts("Not After:  ", spc);

	    (void) BIO_reset(mb);
	    ASN1_UTCTIME_print(mb, cert->cert_info->validity->notAfter);
	    (void) BIO_flush(mb);
	    while((len = BIO_read(mb, iobuf, sizeof(iobuf))) > 0)
	      gf_nputs(iobuf, len, spc);
    	    
	    gf_puts(NEWLINE, spc);
	    gf_puts(NEWLINE, spc);
	    	    
	    BIO_free(mb);
	}
    }

    gf_clear_so_writec(left);

    gf_set_so_writec(&spc, right);

    if(!cert->cert_info){
    	gf_puts(_("Couldn't find certificate info."), spc);
	gf_puts(NEWLINE, spc);
    }
    else{
	gf_puts_uline("Issuer", spc);
	gf_puts(NEWLINE, spc);

	output_X509_NAME(cert->cert_info->issuer, spc);
	gf_puts(NEWLINE, spc);
    }
    
    gf_clear_so_writec(right);
    
    side_by_side(left, right, pc);

    gf_puts_uline("SHA1 Fingerprint", pc);
    gf_puts(NEWLINE, pc);
    get_fingerprint(cert, EVP_sha1(), buf, sizeof(buf));
    gf_puts(buf, pc);
    gf_puts(NEWLINE, pc);

    gf_puts_uline("MD5 Fingerprint", pc);
    gf_puts(NEWLINE, pc);
    get_fingerprint(cert, EVP_md5(), buf, sizeof(buf));
    gf_puts(buf, pc);
    gf_puts(NEWLINE, pc);
    
    so_give(&left);
    so_give(&right);
}

//.........这里部分代码省略.........
			{
			ERR_print_errors(bio_err);
			NCONF_free(config);
			exit(1);
			}
		}

	prog=prog_init();

	/* first check the program name */
	program_name(Argv[0],pname,sizeof pname);

	f.name=pname;
	fp=lh_FUNCTION_retrieve(prog,&f);
	if (fp != NULL)
		{
		Argv[0]=pname;
		ret=fp->func(Argc,Argv);
		goto end;
		}

	/* ok, now check that there are not arguments, if there are,
	 * run with them, shifting the ssleay off the front */
	if (Argc != 1)
		{
		Argc--;
		Argv++;
		ret=do_cmd(prog,Argc,Argv);
		if (ret < 0) ret=0;
		goto end;
		}

	/* ok, lets enter the old 'OpenSSL>' mode */
	
	for (;;)
		{
		ret=0;
		p=buf;
		n=sizeof buf;
		i=0;
		for (;;)
			{
			p[0]='\0';
			if (i++)
				prompt=">";
			else	prompt="OpenSSL> ";
			fputs(prompt,stdout);
			fflush(stdout);
			if (!fgets(p,n,stdin))
				goto end;
			if (p[0] == '\0') goto end;
			i=strlen(p);
			if (i <= 1) break;
			if (p[i-2] != '\\') break;
			i-=2;
			p+=i;
			n-=i;
			}
		if (!chopup_args(&arg,buf,&argc,&argv)) break;

		ret=do_cmd(prog,argc,argv);
		if (ret < 0)
			{
			ret=0;
			goto end;
			}
		if (ret != 0)
			BIO_printf(bio_err,"error in %s\n",argv[0]);
		(void)BIO_flush(bio_err);
		}
	BIO_printf(bio_err,"bad exit\n");
	ret=1;
end:
	if (to_free)
		OPENSSL_free(to_free);
	if (config != NULL)
		{
		NCONF_free(config);
		config=NULL;
		}
	if (prog != NULL) lh_FUNCTION_free(prog);
	if (arg.data != NULL) OPENSSL_free(arg.data);

	apps_shutdown();

	CRYPTO_mem_leaks(bio_err);
	if (bio_err != NULL)
		{
		BIO_free(bio_err);
		bio_err=NULL;
		}
#if defined( OPENSSL_SYS_VMS) && (__INITIAL_POINTER_SIZE == 64)
	/* Free any duplicate Argv[] storage. */
	if (free_Argv)
		{
		OPENSSL_free(Argv);
		}
#endif
	OPENSSL_EXIT(ret);
	}

static long acpt_ctrl(BIO *b, int cmd, long num, void *ptr)
{
    int *ip;
    long ret = 1;
    BIO_ACCEPT *data;
    char **pp;

    data = (BIO_ACCEPT *)b->ptr;

    switch (cmd) {
        case BIO_CTRL_RESET:
            ret = 0;
            data->state = ACPT_S_BEFORE;
            acpt_close_socket(b);
            b->flags = 0;
            break;
        case BIO_C_DO_STATE_MACHINE:
            /* use this one to start the connection */
            ret = (long)acpt_state(b, data);
            break;
        case BIO_C_SET_ACCEPT:
            if (ptr != NULL) {
                if (num == 0) {
                    b->init = 1;
                    free(data->param_addr);
                    data->param_addr = strdup(ptr);
                } else if (num == 1) {
                    data->accept_nbio = (ptr != NULL);
                } else if (num == 2) {
                    BIO_free(data->bio_chain);
                    data->bio_chain = (BIO *)ptr;
                }
            }
            break;
        case BIO_C_SET_NBIO:
            data->nbio = (int)num;
            break;
        case BIO_C_SET_FD:
            b->init = 1;
            b->num = *((int *)ptr);
            data->accept_sock = b->num;
            data->state = ACPT_S_GET_ACCEPT_SOCKET;
            b->shutdown = (int)num;
            b->init = 1;
            break;
        case BIO_C_GET_FD:
            if (b->init) {
                ip = (int *)ptr;
                if (ip != NULL)
                    *ip = data->accept_sock;
                ret = data->accept_sock;
            } else
                ret = -1;
            break;
        case BIO_C_GET_ACCEPT:
            if (b->init) {
                if (ptr != NULL) {
                    pp = (char **)ptr;
                    *pp = data->param_addr;
                } else
                    ret = -1;
            } else
                ret = -1;
            break;
        case BIO_CTRL_GET_CLOSE:
            ret = b->shutdown;
            break;
        case BIO_CTRL_SET_CLOSE:
            b->shutdown = (int)num;
            break;
        case BIO_CTRL_PENDING:
        case BIO_CTRL_WPENDING:
            ret = 0;
            break;
        case BIO_CTRL_FLUSH:
            break;
        case BIO_C_SET_BIND_MODE:
            data->bind_mode = (int)num;
            break;
        case BIO_C_GET_BIND_MODE:
            ret = (long)data->bind_mode;
            break;
        case BIO_CTRL_DUP:
            /*        dbio=(BIO *)ptr;
        if (data->param_port) EAY EAY
            BIO_set_port(dbio,data->param_port);
        if (data->param_hostname)
            BIO_set_hostname(dbio,data->param_hostname);
        BIO_set_nbio(dbio,data->nbio); */
            break;

        default:
            ret = 0;
            break;
    }
    return (ret);
}

//.........这里部分代码省略.........
	if (p == NULL)
		p=to_free=make_config_name();

	default_config_file=p;

	config=NCONF_new(NULL);
	i=NCONF_load(config,p,&errline);
	if (i == 0)
		{
		NCONF_free(config);
		config = NULL;
		ERR_clear_error();
		}

	prog=prog_init();

	/* first check the program name */
	program_name(Argv[0],pname,sizeof pname);

	f.name=pname;
	fp=(FUNCTION *)lh_retrieve(prog,&f);
	if (fp != NULL)
		{
		Argv[0]=pname;
		ret=fp->func(Argc,Argv);
		goto end;
		}

	/* ok, now check that there are not arguments, if there are,
	 * run with them, shifting the ssleay off the front */
	if (Argc != 1)
		{
		Argc--;
		Argv++;
		ret=do_cmd(prog,Argc,Argv);
		if (ret < 0) ret=0;
		goto end;
		}

	/* ok, lets enter the old 'OpenSSL>' mode */
	
	for (;;)
		{
		ret=0;
		p=buf;
		n=sizeof buf;
		i=0;
		for (;;)
			{
			p[0]='\0';
			if (i++)
				prompt=">";
			else	prompt="OpenSSL> ";
			fputs(prompt,stdout);
			fflush(stdout);
			fgets(p,n,stdin);
			if (p[0] == '\0') goto end;
			i=strlen(p);
			if (i <= 1) break;
			if (p[i-2] != '\\') break;
			i-=2;
			p+=i;
			n-=i;
			}
		if (!chopup_args(&arg,buf,&argc,&argv)) break;

		ret=do_cmd(prog,argc,argv);
		if (ret < 0)
			{
			ret=0;
			goto end;
			}
		if (ret != 0)
			BIO_printf(bio_err,"error in %s\n",argv[0]);
		(void)BIO_flush(bio_err);
		}
	BIO_printf(bio_err,"bad exit\n");
	ret=1;
end:
	if (to_free)
		OPENSSL_free(to_free);
	if (config != NULL)
		{
		NCONF_free(config);
		config=NULL;
		}
	if (prog != NULL) lh_free(prog);
	if (arg.data != NULL) OPENSSL_free(arg.data);

	apps_shutdown();

	CRYPTO_mem_leaks(bio_err);
	if (bio_err != NULL)
		{
		BIO_free(bio_err);
		bio_err=NULL;
		}
	OPENSSL_EXIT(ret);
	return ret;
}

int main(int argc, char *argv[])
{
    char *port = NULL;
    BIO *in = NULL;
    BIO *ssl_bio, *tmp;
    SSL_CTX *ctx;
    char buf[512];
    int ret = 1, i;

    if (argc <= 1)
        port = "*:4433";
    else
        port = argv[1];

    SSL_load_error_strings();

    /* Add ciphers and message digests */
    OpenSSL_add_ssl_algorithms();

    ctx = SSL_CTX_new(TLS_server_method());
    if (!SSL_CTX_use_certificate_chain_file(ctx, CERT_FILE))
        goto err;
    if (!SSL_CTX_use_PrivateKey_file(ctx, CERT_FILE, SSL_FILETYPE_PEM))
        goto err;
    if (!SSL_CTX_check_private_key(ctx))
        goto err;

    /* Setup server side SSL bio */
    ssl_bio = BIO_new_ssl(ctx, 0);

    if ((in = BIO_new_accept(port)) == NULL)
        goto err;

    /*
     * This means that when a new connection is accepted on 'in', The ssl_bio
     * will be 'duplicated' and have the new socket BIO push into it.
     * Basically it means the SSL BIO will be automatically setup
     */
    BIO_set_accept_bios(in, ssl_bio);

    /* Arrange to leave server loop on interrupt */
    sigsetup();

 again:
    /*
     * The first call will setup the accept socket, and the second will get a
     * socket.  In this loop, the first actual accept will occur in the
     * BIO_read() function.
     */

    if (BIO_do_accept(in) <= 0)
        goto err;

    while (!done) {
        i = BIO_read(in, buf, 512);
        if (i == 0) {
            /*
             * If we have finished, remove the underlying BIO stack so the
             * next time we call any function for this BIO, it will attempt
             * to do an accept
             */
            printf("Done\n");
            tmp = BIO_pop(in);
            BIO_free_all(tmp);
            goto again;
        }
        if (i < 0)
            goto err;
        fwrite(buf, 1, i, stdout);
        fflush(stdout);
    }

    ret = 0;
 err:
    if (ret) {
        ERR_print_errors_fp(stderr);
    }
    BIO_free(in);
    exit(ret);
    return (!ret);
}

//--------------------------------------------------------------------------------------------------
le_result_t secSocket_AddCertificate
(
    secSocket_Ctx_t*  ctxPtr,           ///< [INOUT] Secure socket context pointer
    const uint8_t*    certificatePtr,   ///< [IN] Certificate Pointer
    size_t            certificateLen    ///< [IN] Certificate Length
)
{
    X509_STORE *store = NULL;
    X509 *cert = NULL;
    BIO *bio = NULL;
    le_result_t status = LE_FAULT;
    le_clk_Time_t currentTime;

    // Check input parameters
    if ((!ctxPtr) || (!certificatePtr) || (!certificateLen))
    {
        return LE_BAD_PARAMETER;
    }

    OpensslCtx_t* contextPtr = GetContext(ctxPtr);
    if (!contextPtr)
    {
        return LE_BAD_PARAMETER;
    }

    LE_INFO("Certificate: %p Len:%zu", certificatePtr, certificateLen);

    // Get a BIO abstraction pointer
    bio = BIO_new_mem_buf((void*)certificatePtr, certificateLen);
    if (!bio)
    {
        LE_ERROR("Unable to allocate BIO pointer");
        goto end;
    }

    // Read the DER formatted certificate from memory into an X509 structure
    cert = d2i_X509(NULL, &certificatePtr, certificateLen);
    if (!cert)
    {
        LE_ERROR("Unable to read certificate");
        goto end;
    }

    // Check certificate validity
    currentTime = le_clk_GetAbsoluteTime();

    if ((X509_cmp_time(X509_get_notBefore(cert), &currentTime.sec) >= 0)  ||
        (X509_cmp_time(X509_get_notAfter(cert), &currentTime.sec) <= 0))
    {
        LE_ERROR("Current certificate expired, please add a valid certificate");
        status = LE_FORMAT_ERROR;
        goto end;
    }

    // Get a pointer to the current certificate verification pool
    store = SSL_CTX_get_cert_store(contextPtr->sslCtxPtr);
    if (!store)
    {
        LE_ERROR("Unable to get a pointer to the X509 certificate");
        goto end;
    }

    // Add certificate to the verification pool
    if (!X509_STORE_add_cert(store, cert))
    {
        LE_ERROR("Unable to add certificate to pool");
        goto end;
    }

    status = LE_OK;

end:
    if (cert)
    {
        X509_free(cert);
    }

    if (bio)
    {
        BIO_free(bio);
    }

    return status;
}

extern "C" int32_t BioDestroy(BIO* a)
{
    return BIO_free(a);
}

int
tls_configure_keypair(struct tls *ctx, SSL_CTX *ssl_ctx,
    struct tls_keypair *keypair, int required)
{
	EVP_PKEY *pkey = NULL;
	X509 *cert = NULL;
	BIO *bio = NULL;

	if (!required &&
	    keypair->cert_mem == NULL &&
	    keypair->key_mem == NULL &&
	    keypair->cert_file == NULL &&
	    keypair->key_file == NULL)
		return(0);

	if (keypair->cert_mem != NULL) {
		if (keypair->cert_len > INT_MAX) {
			tls_set_errorx(ctx, "certificate too long");
			goto err;
		}

		if (SSL_CTX_use_certificate_chain_mem(ssl_ctx,
		    keypair->cert_mem, keypair->cert_len) != 1) {
			tls_set_errorx(ctx, "failed to load certificate");
			goto err;
		}
		cert = NULL;
	}
	if (keypair->key_mem != NULL) {
		if (keypair->key_len > INT_MAX) {
			tls_set_errorx(ctx, "key too long");
			goto err;
		}

		if ((bio = BIO_new_mem_buf(keypair->key_mem,
		    keypair->key_len)) == NULL) {
			tls_set_errorx(ctx, "failed to create buffer");
			goto err;
		}
		if ((pkey = PEM_read_bio_PrivateKey(bio, NULL, NULL,
		    NULL)) == NULL) {
			tls_set_errorx(ctx, "failed to read private key");
			goto err;
		}
		if (SSL_CTX_use_PrivateKey(ssl_ctx, pkey) != 1) {
			tls_set_errorx(ctx, "failed to load private key");
			goto err;
		}
		BIO_free(bio);
		bio = NULL;
		EVP_PKEY_free(pkey);
		pkey = NULL;
	}

	if (keypair->cert_file != NULL) {
		if (SSL_CTX_use_certificate_chain_file(ssl_ctx,
		    keypair->cert_file) != 1) {
			tls_set_errorx(ctx, "failed to load certificate file");
			goto err;
		}
	}
	if (keypair->key_file != NULL) {
		if (SSL_CTX_use_PrivateKey_file(ssl_ctx,
		    keypair->key_file, SSL_FILETYPE_PEM) != 1) {
			tls_set_errorx(ctx, "failed to load private key file");
			goto err;
		}
	}

	if (SSL_CTX_check_private_key(ssl_ctx) != 1) {
		tls_set_errorx(ctx, "private/public key mismatch");
		goto err;
	}

	return (0);

 err:
	EVP_PKEY_free(pkey);
	X509_free(cert);
	BIO_free(bio);

	return (1);
}

int main (int argc, char **argv)
{
    BIO *in = NULL, *out = NULL, *tbio = NULL;

    X509 *scert = NULL;

    EVP_PKEY *skey = NULL;

    CMS_ContentInfo *cms = NULL;

    int ret = 1;

    /* For simple S/MIME signing use CMS_DETACHED.
     * On OpenSSL 1.0.0 only:
     * for streaming detached set CMS_DETACHED|CMS_STREAM
     * for streaming non-detached set CMS_STREAM
     */
    int flags = CMS_DETACHED | CMS_STREAM;

    OpenSSL_add_all_algorithms ();
    ERR_load_crypto_strings ();

    /* Read in signer certificate and private key */
    tbio = BIO_new_file ("signer.pem", "r");

    if (!tbio)
        goto err;

    scert = PEM_read_bio_X509 (tbio, NULL, 0, NULL);

    BIO_reset (tbio);

    skey = PEM_read_bio_PrivateKey (tbio, NULL, 0, NULL);

    if (!scert || !skey)
        goto err;

    /* Open content being signed */

    in = BIO_new_file ("sign.txt", "r");

    if (!in)
        goto err;

    /* Sign content */
    cms = CMS_sign (scert, skey, NULL, in, flags);

    if (!cms)
        goto err;

    out = BIO_new_file ("smout.txt", "w");
    if (!out)
        goto err;

    if (!(flags & CMS_STREAM))
        BIO_reset (in);

    /* Write out S/MIME message */
    if (!SMIME_write_CMS (out, cms, in, flags))
        goto err;

    ret = 0;

  err:

    if (ret)
    {
        fprintf (stderr, "Error Signing Data\n");
        ERR_print_errors_fp (stderr);
    }

    if (cms)
        CMS_ContentInfo_free (cms);
    if (scert)
        X509_free (scert);
    if (skey)
        EVP_PKEY_free (skey);

    if (in)
        BIO_free (in);
    if (out)
        BIO_free (out);
    if (tbio)
        BIO_free (tbio);

    return ret;

}

//.........这里部分代码省略.........
            pubin = 1;
            pubout = 1;
            pubtext = 1;
        } else if (strcmp(*args, "-pubout") == 0)
            pubout = 1;
        else if (strcmp(*args, "-text_pub") == 0) {
            pubtext = 1;
            text = 1;
        } else if (strcmp(*args, "-text") == 0)
            text = 1;
        else if (strcmp(*args, "-noout") == 0)
            noout = 1;
        else {
            cipher = EVP_get_cipherbyname(*args + 1);
            if (!cipher) {
                BIO_printf(bio_err, "Unknown cipher %s\n",
                           *args + 1);
                badarg = 1;
            }
        }
        args++;
    }

    if (badarg) {
bad:
        BIO_printf(bio_err, "Usage pkey [options]\n");
        BIO_printf(bio_err, "where options are\n");
        BIO_printf(bio_err, "-in file        input file\n");
        BIO_printf(bio_err, "-inform X       input format (DER or PEM)\n");
        BIO_printf(bio_err, "-passin arg     input file pass phrase source\n");
        BIO_printf(bio_err, "-outform X      output format (DER or PEM)\n");
        BIO_printf(bio_err, "-out file       output file\n");
        BIO_printf(bio_err, "-passout arg    output file pass phrase source\n");
#ifndef OPENSSL_NO_ENGINE
        BIO_printf(bio_err, "-engine e       use engine e, possibly a hardware device.\n");
#endif
        return 1;
    }
#ifndef OPENSSL_NO_ENGINE
    e = setup_engine(bio_err, engine, 0);
#endif

    if (!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
        BIO_printf(bio_err, "Error getting passwords\n");
        goto end;
    }
    if (outfile) {
        if (!(out = BIO_new_file(outfile, "wb"))) {
            BIO_printf(bio_err,
                       "Can't open output file %s\n", outfile);
            goto end;
        }
    } else {
        out = BIO_new_fp(stdout, BIO_NOCLOSE);
    }

    if (pubin)
        pkey = load_pubkey(bio_err, infile, informat, 1,
                           passin, e, "Public Key");
    else
        pkey = load_key(bio_err, infile, informat, 1,
                        passin, e, "key");
    if (!pkey)
        goto end;

    if (!noout) {
        if (outformat == FORMAT_PEM) {
            if (pubout)
                PEM_write_bio_PUBKEY(out, pkey);
            else
                PEM_write_bio_PrivateKey(out, pkey, cipher,
                                         NULL, 0, NULL, passout);
        } else if (outformat == FORMAT_ASN1) {
            if (pubout)
                i2d_PUBKEY_bio(out, pkey);
            else
                i2d_PrivateKey_bio(out, pkey);
        } else {
            BIO_printf(bio_err, "Bad format specified for key\n");
            goto end;
        }

    }
    if (text) {
        if (pubtext)
            EVP_PKEY_print_public(out, pkey, 0, NULL);
        else
            EVP_PKEY_print_private(out, pkey, 0, NULL);
    }
    ret = 0;

end:
    EVP_PKEY_free(pkey);
    BIO_free_all(out);
    BIO_free(in);
    free(passin);
    free(passout);

    return ret;
}

//.........这里部分代码省略.........
    argc = opt_num_rest();
    if (argc != 0)
        goto opthelp;

    in = bio_open_default(infile, 'r', informat);
    if (in == NULL)
        goto end;

    if (informat == FORMAT_ASN1)
        p7 = d2i_PKCS7_bio(in, NULL);
    else
        p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
    if (p7 == NULL) {
        BIO_printf(bio_err, "unable to load PKCS7 object\n");
        ERR_print_errors(bio_err);
        goto end;
    }

    out = bio_open_default(outfile, 'w', outformat);
    if (out == NULL)
        goto end;

    if (p7_print)
        PKCS7_print_ctx(out, p7, 0, NULL);

    if (print_certs) {
        STACK_OF(X509) *certs = NULL;
        STACK_OF(X509_CRL) *crls = NULL;

        i = OBJ_obj2nid(p7->type);
        switch (i) {
        case NID_pkcs7_signed:
            if (p7->d.sign != NULL) {
                certs = p7->d.sign->cert;
                crls = p7->d.sign->crl;
            }
            break;
        case NID_pkcs7_signedAndEnveloped:
            if (p7->d.signed_and_enveloped != NULL) {
                certs = p7->d.signed_and_enveloped->cert;
                crls = p7->d.signed_and_enveloped->crl;
            }
            break;
        default:
            break;
        }

        if (certs != NULL) {
            X509 *x;

            for (i = 0; i < sk_X509_num(certs); i++) {
                x = sk_X509_value(certs, i);
                if (text)
                    X509_print(out, x);
                else
                    dump_cert_text(out, x);

                if (!noout)
                    PEM_write_bio_X509(out, x);
                BIO_puts(out, "\n");
            }
        }
        if (crls != NULL) {
            X509_CRL *crl;

            for (i = 0; i < sk_X509_CRL_num(crls); i++) {
                crl = sk_X509_CRL_value(crls, i);

                X509_CRL_print(out, crl);

                if (!noout)
                    PEM_write_bio_X509_CRL(out, crl);
                BIO_puts(out, "\n");
            }
        }

        ret = 0;
        goto end;
    }

    if (!noout) {
        if (outformat == FORMAT_ASN1)
            i = i2d_PKCS7_bio(out, p7);
        else
            i = PEM_write_bio_PKCS7(out, p7);

        if (!i) {
            BIO_printf(bio_err, "unable to write pkcs7 object\n");
            ERR_print_errors(bio_err);
            goto end;
        }
    }
    ret = 0;
 end:
    PKCS7_free(p7);
    release_engine(e);
    BIO_free(in);
    BIO_free_all(out);
    return (ret);
}

//.........这里部分代码省略.........
    char **args = argv + 1;
    const char *connect_str = "localhost:4433";
    int nargs = argc - 1;

    ERR_load_crypto_strings();
    ERR_load_SSL_strings();
    SSL_library_init();

    ctx = SSL_CTX_new(TLS_client_method());
    cctx = SSL_CONF_CTX_new();
    SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_CLIENT);
    SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
    while (*args && **args == '-') {
        int rv;
        /* Parse standard arguments */
        rv = SSL_CONF_cmd_argv(cctx, &nargs, &args);
        if (rv == -3) {
            fprintf(stderr, "Missing argument for %s\n", *args);
            goto end;
        }
        if (rv < 0) {
            fprintf(stderr, "Error in command %s\n", *args);
            ERR_print_errors_fp(stderr);
            goto end;
        }
        /* If rv > 0 we processed something so proceed to next arg */
        if (rv > 0)
            continue;
        /* Otherwise application specific argument processing */
        if (strcmp(*args, "-connect") == 0) {
            connect_str = args[1];
            if (connect_str == NULL) {
                fprintf(stderr, "Missing -connect argument\n");
                goto end;
            }
            args += 2;
            nargs -= 2;
            continue;
        } else {
            fprintf(stderr, "Unknown argument %s\n", *args);
            goto end;
        }
    }

    if (!SSL_CONF_CTX_finish(cctx)) {
        fprintf(stderr, "Finish error\n");
        ERR_print_errors_fp(stderr);
        goto end;
    }

    /*
     * We'd normally set some stuff like the verify paths and * mode here
     * because as things stand this will connect to * any server whose
     * certificate is signed by any CA.
     */

    sbio = BIO_new_ssl_connect(ctx);

    BIO_get_ssl(sbio, &ssl);

    if (!ssl) {
        fprintf(stderr, "Can't locate SSL pointer\n");
        goto end;
    }

    /* Don't want any retries */
    SSL_set_mode(ssl, SSL_MODE_AUTO_RETRY);

    /* We might want to do other things with ssl here */

    BIO_set_conn_hostname(sbio, connect_str);

    out = BIO_new_fp(stdout, BIO_NOCLOSE);
    if (BIO_do_connect(sbio) <= 0) {
        fprintf(stderr, "Error connecting to server\n");
        ERR_print_errors_fp(stderr);
        goto end;
    }

    if (BIO_do_handshake(sbio) <= 0) {
        fprintf(stderr, "Error establishing SSL connection\n");
        ERR_print_errors_fp(stderr);
        goto end;
    }

    /* Could examine ssl here to get connection info */

    BIO_puts(sbio, "GET / HTTP/1.0\n\n");
    for (;;) {
        len = BIO_read(sbio, tmpbuf, 1024);
        if (len <= 0)
            break;
        BIO_write(out, tmpbuf, len);
    }
 end:
    SSL_CONF_CTX_free(cctx);
    BIO_free_all(sbio);
    BIO_free(out);
    return 0;
}

//.........这里部分代码省略.........
        BN_rand(a, NUM_BITS + c, 0, 0);

        RAND_bytes(&c, 1);
        c = (c % BN_BITS) - BN_BITS2;
        BN_rand(b, NUM_BITS + c, 0, 0);

        RAND_bytes(&c, 1);
        c = (c % BN_BITS) - BN_BITS2;
        BN_rand(m, NUM_BITS + c, 0, 1);

        BN_mod(a, a, m, ctx);
        BN_mod(b, b, m, ctx);

        ret = BN_mod_exp_mont(r_mont, a, b, m, ctx, NULL);
        if (ret <= 0) {
            printf("BN_mod_exp_mont() problems\n");
            ERR_print_errors(out);
            EXIT(1);
        }

        ret = BN_mod_exp_recp(r_recp, a, b, m, ctx);
        if (ret <= 0) {
            printf("BN_mod_exp_recp() problems\n");
            ERR_print_errors(out);
            EXIT(1);
        }

        ret = BN_mod_exp_simple(r_simple, a, b, m, ctx);
        if (ret <= 0) {
            printf("BN_mod_exp_simple() problems\n");
            ERR_print_errors(out);
            EXIT(1);
        }

        ret = BN_mod_exp_mont_consttime(r_mont_const, a, b, m, ctx, NULL);
        if (ret <= 0) {
            printf("BN_mod_exp_mont_consttime() problems\n");
            ERR_print_errors(out);
            EXIT(1);
        }

        if (BN_cmp(r_simple, r_mont) == 0
            && BN_cmp(r_simple, r_recp) == 0
            && BN_cmp(r_simple, r_mont_const) == 0) {
            printf(".");
            fflush(stdout);
        } else {
            if (BN_cmp(r_simple, r_mont) != 0)
                printf("\nsimple and mont results differ\n");
            if (BN_cmp(r_simple, r_mont_const) != 0)
                printf("\nsimple and mont const time results differ\n");
            if (BN_cmp(r_simple, r_recp) != 0)
                printf("\nsimple and recp results differ\n");

            printf("a (%3d) = ", BN_num_bits(a));
            BN_print(out, a);
            printf("\nb (%3d) = ", BN_num_bits(b));
            BN_print(out, b);
            printf("\nm (%3d) = ", BN_num_bits(m));
            BN_print(out, m);
            printf("\nsimple   =");
            BN_print(out, r_simple);
            printf("\nrecp     =");
            BN_print(out, r_recp);
            printf("\nmont     =");
            BN_print(out, r_mont);
            printf("\nmont_ct  =");
            BN_print(out, r_mont_const);
            printf("\n");
            EXIT(1);
        }
    }
    BN_free(r_mont);
    BN_free(r_mont_const);
    BN_free(r_recp);
    BN_free(r_simple);
    BN_free(a);
    BN_free(b);
    BN_free(m);
    BN_CTX_free(ctx);
    ERR_remove_thread_state(NULL);
    CRYPTO_mem_leaks(out);
    BIO_free(out);
    printf("\n");

    if (test_exp_mod_zero() != 0)
        goto err;

    printf("done\n");

    EXIT(0);
 err:
    ERR_load_crypto_strings();
    ERR_print_errors(out);
#ifdef OPENSSL_SYS_NETWARE
    printf("ERROR\n");
#endif
    EXIT(1);
    return (1);
}