/* apps/s_client.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.]

  */

 /* ====================================================================

  * Copyright (c) 1998-2001 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).

  *

  */

 #include <assert.h>

 #include <stdio.h>

 #include <stdlib.h>

 #include <string.h>

 #include <sys/select.h>

 #include <openssl/e_os2.h>

 #ifdef OPENSSL_NO_STDIO

 #define APPS_WIN16

 #endif

 /* With IPv6, it looks like Digital has mixed up the proper order of

    recursive header file inclusion, resulting in the compiler complaining

    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which

    is needed to have fileno() declared correctly...  So let's define u_int */

 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)

 #define __U_INT

 typedef unsigned int u_int;

 #endif

 #define USE_SOCKETS

 #include "apps.h"

 #include <openssl/x509.h>

 #include <openssl/ssl.h>

 #include <openssl/err.h>

 #include <openssl/pem.h>

 #include <openssl/rand.h>

 #include "s_apps.h"

 #include "timeouts.h"

 #ifdef OPENSSL_SYS_WINCE

 /* Windows CE incorrectly defines fileno as returning void*, so to avoid problems below... */

 #ifdef fileno

 #undef fileno

 #endif

 #define fileno(a) (int)_fileno(a)

 #endif

 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)

 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */

 #undef FIONBIO

 #endif

 #undef PROG

 #define PROG	s_client_main

 /*#define SSL_HOST_NAME	"www.netscape.com" */

 /*#define SSL_HOST_NAME	"193.118.187.102" */

 #define SSL_HOST_NAME	"localhost"

 /*#define TEST_CERT "client.pem" */ /* no default cert. */

 #undef BUFSIZZ

 #define BUFSIZZ 1024*8

 extern int verify_depth;

 extern int verify_error;

 #ifdef FIONBIO

 static int c_nbio=0;

 #endif

 static int c_Pause=0;

 static int c_debug=0;

 static int c_msg=0;

 static int c_showcerts=0;

 static void sc_usage(void);

 static void print_stuff(BIO *berr,SSL *con,int full);

 static BIO *bio_c_out=NULL;

 static int c_quiet=0;

 static int c_ign_eof=0;

 static void sc_usage(void)

 	{

 	BIO_printf(bio_err,"usage: s_client args\n");

 	BIO_printf(bio_err,"\n");

 	BIO_printf(bio_err," -host host     - use -connect instead\n");

 	BIO_printf(bio_err," -port port     - use -connect instead\n");

 	BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);

 	BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");

 	BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");

 	BIO_printf(bio_err," -certform arg - certificate format (PEM or DER) PEM default\n");

 	BIO_printf(bio_err," -key arg      - Private key file to use, in cert file if\n");

 	BIO_printf(bio_err,"                 not specified but cert file is.\n");

 	BIO_printf(bio_err," -keyform arg  - key format (PEM or DER) PEM default\n");

 	BIO_printf(bio_err," -pass arg     - private key file pass phrase source\n");

 	BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");

 	BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");

 	BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");

 	BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");

 	BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");

 	BIO_printf(bio_err," -debug        - extra output\n");

 #ifdef WATT32

 	BIO_printf(bio_err," -wdebug       - WATT-32 tcp debugging\n");

 #endif

 	BIO_printf(bio_err," -msg          - Show protocol messages\n");

 	BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");

 	BIO_printf(bio_err," -state        - print the 'ssl' states\n");

 #ifdef FIONBIO

 	BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");

 #endif

 	BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");

 	BIO_printf(bio_err," -quiet        - no s_client output\n");

 	BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");

 	BIO_printf(bio_err," -ssl2         - just use SSLv2\n");

 	BIO_printf(bio_err," -ssl3         - just use SSLv3\n");

 	BIO_printf(bio_err," -tls1         - just use TLSv1\n");

 	BIO_printf(bio_err," -dtls1        - just use DTLSv1\n");    

 	BIO_printf(bio_err," -mtu          - set the MTU\n");

 	BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");

 	BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");

 	BIO_printf(bio_err," -serverpref   - Use server's cipher preferences (only SSLv2)\n");

 	BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");

 	BIO_printf(bio_err,"                 command to see what is available\n");

 	BIO_printf(bio_err," -starttls prot - use the STARTTLS command before starting TLS\n");

 	BIO_printf(bio_err,"                 for those protocols that support it, where\n");

 	BIO_printf(bio_err,"                 'prot' defines which one to assume.  Currently,\n");

 	BIO_printf(bio_err,"                 only \"smtp\" and \"pop3\" are supported.\n");

 #ifndef OPENSSL_NO_ENGINE

 	BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");

 #endif

 	BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);

 	}

 int MAIN(int, char **);

 int MAIN(int argc, char **argv)

 	{

 	int off=0;

 	SSL *con=NULL,*con2=NULL;

 	X509_STORE *store = NULL;

 	int s,k,width,state=0;

 	char *cbuf=NULL,*sbuf=NULL,*mbuf=NULL;

 	int cbuf_len,cbuf_off;

 	int sbuf_len,sbuf_off;

 	fd_set readfds,writefds;

 	short port=PORT;

 	int full_log=1;

 	char *host=SSL_HOST_NAME;

 	char *cert_file=NULL,*key_file=NULL;

 	int cert_format = FORMAT_PEM, key_format = FORMAT_PEM;

 	char *passarg = NULL, *pass = NULL;

 	X509 *cert = NULL;

 	EVP_PKEY *key = NULL;

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

 	int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;

 	int crlf=0;

 	int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;

 	SSL_CTX *ctx=NULL;

 	int ret=1,in_init=1,i,nbio_test=0;

 	int starttls_proto = 0;

 	int prexit = 0, vflags = 0;

 	SSL_METHOD *meth=NULL;

 #ifdef sock_type

 #undef sock_type

 #endif

 	int sock_type=SOCK_STREAM;

 	BIO *sbio;

 	char *inrand=NULL;

 #ifndef OPENSSL_NO_ENGINE

 	char *engine_id=NULL;

 	ENGINE *e=NULL;

 #endif

 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)

 	struct timeval tv;

 #endif

 	struct sockaddr peer;

 	int peerlen = sizeof(peer);

 	int enable_timeouts = 0 ;

 	long mtu = 0;

 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)

 	meth=SSLv23_client_method();

 #elif !defined(OPENSSL_NO_SSL3)

 	meth=SSLv3_client_method();

 #elif !defined(OPENSSL_NO_SSL2)

 	meth=SSLv2_client_method();

 #endif

 	apps_startup();

 	c_Pause=0;

 	c_quiet=0;

 	c_ign_eof=0;

 	c_debug=0;

 	c_msg=0;

 	c_showcerts=0;

 	if (bio_err == NULL)

 		bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);

 	if (!load_config(bio_err, NULL))

 		goto end;

 	if (	((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||

 		((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||

 		((mbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))

 		{

 		BIO_printf(bio_err,"out of memory\n");

 		goto end;

 		}

 	verify_depth=0;

 	verify_error=X509_V_OK;

 #ifdef FIONBIO

 	c_nbio=0;

 #endif

 	argc--;

 	argv++;

 	while (argc >= 1)

 		{

 		if	(strcmp(*argv,"-host") == 0)

 			{

 			if (--argc < 1) goto bad;

 			host= *(++argv);

 			}

 		else if	(strcmp(*argv,"-port") == 0)

 			{

 			if (--argc < 1) goto bad;

 			port=atoi(*(++argv));

 			if (port == 0) goto bad;

 			}

 		else if (strcmp(*argv,"-connect") == 0)

 			{

 			if (--argc < 1) goto bad;

 			if (!extract_host_port(*(++argv),&host,NULL,&port))

 				goto bad;

 			}

 		else if	(strcmp(*argv,"-verify") == 0)

 			{

 			verify=SSL_VERIFY_PEER;

 			if (--argc < 1) goto bad;

 			verify_depth=atoi(*(++argv));

 			BIO_printf(bio_err,"verify depth is %d\n",verify_depth);

 			}

 		else if	(strcmp(*argv,"-cert") == 0)

 			{

 			if (--argc < 1) goto bad;

 			cert_file= *(++argv);

 			}

 		else if	(strcmp(*argv,"-certform") == 0)

 			{

 			if (--argc < 1) goto bad;

 			cert_format = str2fmt(*(++argv));

 			}

 		else if	(strcmp(*argv,"-crl_check") == 0)

 			vflags |= X509_V_FLAG_CRL_CHECK;

 		else if	(strcmp(*argv,"-crl_check_all") == 0)

 			vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;

 		else if	(strcmp(*argv,"-prexit") == 0)

 			prexit=1;

 		else if	(strcmp(*argv,"-crlf") == 0)

 			crlf=1;

 		else if	(strcmp(*argv,"-quiet") == 0)

 			{

 			c_quiet=1;

 			c_ign_eof=1;

 			}

 		else if	(strcmp(*argv,"-ign_eof") == 0)

 			c_ign_eof=1;

 		else if	(strcmp(*argv,"-pause") == 0)

 			c_Pause=1;

 		else if	(strcmp(*argv,"-debug") == 0)

 			c_debug=1;

 #ifdef WATT32

 		else if (strcmp(*argv,"-wdebug") == 0)

 			dbug_init();

 #endif

 		else if	(strcmp(*argv,"-msg") == 0)

 			c_msg=1;

 		else if	(strcmp(*argv,"-showcerts") == 0)

 			c_showcerts=1;

 		else if	(strcmp(*argv,"-nbio_test") == 0)

 			nbio_test=1;

 		else if	(strcmp(*argv,"-state") == 0)

 			state=1;

 #ifndef OPENSSL_NO_SSL2

 		else if	(strcmp(*argv,"-ssl2") == 0)

 			meth=SSLv2_client_method();

 #endif

 #ifndef OPENSSL_NO_SSL3

 		else if	(strcmp(*argv,"-ssl3") == 0)

 			meth=SSLv3_client_method();

 #endif

 #ifndef OPENSSL_NO_TLS1

 		else if	(strcmp(*argv,"-tls1") == 0)

 			meth=TLSv1_client_method();

 #endif

 #ifndef OPENSSL_NO_DTLS1

 		else if	(strcmp(*argv,"-dtls1") == 0)

 			{

 			meth=DTLSv1_client_method();

 			sock_type=SOCK_DGRAM;

 			}

 		else if (strcmp(*argv,"-timeout") == 0)

 			enable_timeouts=1;

 		else if (strcmp(*argv,"-mtu") == 0)

 			{

 			if (--argc < 1) goto bad;

 			mtu = atol(*(++argv));

 			}

 #endif

 		else if (strcmp(*argv,"-bugs") == 0)

 			bugs=1;

 		else if	(strcmp(*argv,"-keyform") == 0)

 			{

 			if (--argc < 1) goto bad;

 			key_format = str2fmt(*(++argv));

 			}

 		else if	(strcmp(*argv,"-pass") == 0)

 			{

 			if (--argc < 1) goto bad;

 			passarg = *(++argv);

 			}

 		else if	(strcmp(*argv,"-key") == 0)

 			{

 			if (--argc < 1) goto bad;

 			key_file= *(++argv);

 			}

 		else if	(strcmp(*argv,"-reconnect") == 0)

 			{

 			reconnect=5;

 			}

 		else if	(strcmp(*argv,"-CApath") == 0)

 			{

 			if (--argc < 1) goto bad;

 			CApath= *(++argv);

 			}

 		else if	(strcmp(*argv,"-CAfile") == 0)

 			{

 			if (--argc < 1) goto bad;

 			CAfile= *(++argv);

 			}

 		else if (strcmp(*argv,"-no_tls1") == 0)

 			off|=SSL_OP_NO_TLSv1;

 		else if (strcmp(*argv,"-no_ssl3") == 0)

 			off|=SSL_OP_NO_SSLv3;

 		else if (strcmp(*argv,"-no_ssl2") == 0)

 			off|=SSL_OP_NO_SSLv2;

 		else if (strcmp(*argv,"-serverpref") == 0)

 			off|=SSL_OP_CIPHER_SERVER_PREFERENCE;

 		else if	(strcmp(*argv,"-cipher") == 0)

 			{

 			if (--argc < 1) goto bad;

 			cipher= *(++argv);

 			}

 #ifdef FIONBIO

 		else if (strcmp(*argv,"-nbio") == 0)

 			{ c_nbio=1; }

 #endif

 		else if	(strcmp(*argv,"-starttls") == 0)

 			{

 			if (--argc < 1) goto bad;

 			++argv;

 			if (strcmp(*argv,"smtp") == 0)

 				starttls_proto = 1;

 			else if (strcmp(*argv,"pop3") == 0)

 				starttls_proto = 2;

 			else

 				goto bad;

 			}

 #ifndef OPENSSL_NO_ENGINE

 		else if	(strcmp(*argv,"-engine") == 0)

 			{

 			if (--argc < 1) goto bad;

 			engine_id = *(++argv);

 			}

 #endif

 		else if (strcmp(*argv,"-rand") == 0)

 			{

 			if (--argc < 1) goto bad;

 			inrand= *(++argv);

 			}

 		else

 			{

 			BIO_printf(bio_err,"unknown option %s\n",*argv);

 			badop=1;

 			break;

 			}

 		argc--;

 		argv++;

 		}

 	if (badop)

 		{

 bad:

 		sc_usage();

 		goto end;

 		}

 	OpenSSL_add_ssl_algorithms();

 	SSL_load_error_strings();

 #ifndef OPENSSL_NO_ENGINE

         e = setup_engine(bio_err, engine_id, 1);

 #endif

 	if (!app_passwd(bio_err, passarg, NULL, &pass, NULL))

 		{

 		BIO_printf(bio_err, "Error getting password\n");

 		goto end;

 		}

 	if (key_file == NULL)

 		key_file = cert_file;

 	if (key_file)

 		{

 		key = load_key(bio_err, key_file, key_format, 0, pass, e,

 			       "client certificate private key file");

 		if (!key)

 			{

 			ERR_print_errors(bio_err);

 			goto end;

 			}

 		}

 	if (cert_file)

 		{

 		cert = load_cert(bio_err,cert_file,cert_format,

 				NULL, e, "client certificate file");

 		if (!cert)

 			{

 			ERR_print_errors(bio_err);

 			goto end;

 			}

 		}

 	if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL

 		&& !RAND_status())

 		{

 		BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");

 		}

 	if (inrand != NULL)

 		BIO_printf(bio_err,"%ld semi-random bytes loaded\n",

 			app_RAND_load_files(inrand));

 	if (bio_c_out == NULL)

 		{

 		if (c_quiet && !c_debug && !c_msg)

 			{

 			bio_c_out=BIO_new(BIO_s_null());

 			}

 		else

 			{

 			if (bio_c_out == NULL)

 				bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);

 			}

 		}

 	ctx=SSL_CTX_new(meth);

 	if (ctx == NULL)

 		{

 		ERR_print_errors(bio_err);

 		goto end;

 		}

 	if (bugs)

 		SSL_CTX_set_options(ctx,SSL_OP_ALL|off);

 	else

 		SSL_CTX_set_options(ctx,off);

 	/* DTLS: partial reads end up discarding unread UDP bytes :-( 

 	 * Setting read ahead solves this problem.

 	 */

 	if (sock_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);

 	if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);

 	if (cipher != NULL)

 		if(!SSL_CTX_set_cipher_list(ctx,cipher)) {

 		BIO_printf(bio_err,"error setting cipher list\n");

 		ERR_print_errors(bio_err);

 		goto end;

 	}

 #if 0

 	else

 		SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));

 #endif

 	SSL_CTX_set_verify(ctx,verify,verify_callback);

 	if (!set_cert_key_stuff(ctx,cert,key))

 		goto end;

 	if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||

 		(!SSL_CTX_set_default_verify_paths(ctx)))

 		{

 		/* BIO_printf(bio_err,"error setting default verify locations\n"); */

 		ERR_print_errors(bio_err);

 		/* goto end; */

 		}

 	store = SSL_CTX_get_cert_store(ctx);

 	X509_STORE_set_flags(store, vflags);

 	con=SSL_new(ctx);

 #ifndef OPENSSL_NO_KRB5

 	if (con  &&  (con->kssl_ctx = kssl_ctx_new()) != NULL)

                 {

                 kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVER, host);

 		}

 #endif	/* OPENSSL_NO_KRB5  */

 /*	SSL_set_cipher_list(con,"RC4-MD5"); */

 re_start:

 	if (init_client(&s,host,port,sock_type) == 0)

 		{

 		BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());

 		SHUTDOWN(s);

 		goto end;

 		}

 	BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);

 #ifdef FIONBIO

 	if (c_nbio)

 		{

 		unsigned long l=1;

 		BIO_printf(bio_c_out,"turning on non blocking io\n");

 		if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)

 			{

 			ERR_print_errors(bio_err);

 			goto end;

 			}

 		}

 #endif                                              

 	if (c_Pause & 0x01) con->debug=1;

 	if ( SSL_version(con) == DTLS1_VERSION)

 		{

 		struct timeval timeout;

 		sbio=BIO_new_dgram(s,BIO_NOCLOSE);

 		if (getsockname(s, &peer, (void *)&peerlen) < 0)

 			{

 			BIO_printf(bio_err, "getsockname:errno=%d\n",

 				get_last_socket_error());

 			SHUTDOWN(s);

 			goto end;

 			}

 		BIO_ctrl_set_connected(sbio, 1, &peer);

 		if ( enable_timeouts)

 			{

 			timeout.tv_sec = 0;

 			timeout.tv_usec = DGRAM_RCV_TIMEOUT;

 			BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);

 			timeout.tv_sec = 0;

 			timeout.tv_usec = DGRAM_SND_TIMEOUT;

 			BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);

 			}

 		if ( mtu > 0)

 			{

 			SSL_set_options(con, SSL_OP_NO_QUERY_MTU);

 			SSL_set_mtu(con, mtu);

 			}

 		else

 			/* want to do MTU discovery */

 			BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);

 		}

 	else

 		sbio=BIO_new_socket(s,BIO_NOCLOSE);

 	if (nbio_test)

 		{

 		BIO *test;

 		test=BIO_new(BIO_f_nbio_test());

 		sbio=BIO_push(test,sbio);

 		}

 	if (c_debug)

 		{

 		con->debug=1;

 		BIO_set_callback(sbio,bio_dump_callback);

 		BIO_set_callback_arg(sbio,(char*)bio_c_out);

 		}

 	if (c_msg)

 		{

 		SSL_set_msg_callback(con, msg_cb);

 		SSL_set_msg_callback_arg(con, bio_c_out);

 		}

 	SSL_set_bio(con,sbio,sbio);

 	SSL_set_connect_state(con);

 	/* ok, lets connect */

 	width=SSL_get_fd(con)+1;

 	read_tty=1;

 	write_tty=0;

 	tty_on=0;

 	read_ssl=1;

 	write_ssl=1;

 	cbuf_len=0;

 	cbuf_off=0;

 	sbuf_len=0;

 	sbuf_off=0;

 	/* This is an ugly hack that does a lot of assumptions */

 	if (starttls_proto == 1)

 		{

 		BIO_read(sbio,mbuf,BUFSIZZ);

 		BIO_printf(sbio,"STARTTLS\r\n");

 		BIO_read(sbio,sbuf,BUFSIZZ);

 		}

 	if (starttls_proto == 2)

 		{

 		BIO_read(sbio,mbuf,BUFSIZZ);

 		BIO_printf(sbio,"STLS\r\n");

 		BIO_read(sbio,sbuf,BUFSIZZ);

 		}

 	for (;;)

 		{

 		FD_ZERO(&readfds);

 		FD_ZERO(&writefds);

 		if (SSL_in_init(con) && !SSL_total_renegotiations(con))

 			{

 			in_init=1;

 			tty_on=0;

 			}

 		else

 			{

 			tty_on=1;

 			if (in_init)

 				{

 				in_init=0;

 				print_stuff(bio_c_out,con,full_log);

 				if (full_log > 0) full_log--;

 				if (starttls_proto)

 					{

 					BIO_printf(bio_err,"%s",mbuf);

 					/* We don't need to know any more */

 					starttls_proto = 0;

 					}

 				if (reconnect)

 					{

 					reconnect--;

 					BIO_printf(bio_c_out,"drop connection and then reconnect\n");

 					SSL_shutdown(con);

 					SSL_set_connect_state(con);

 					SHUTDOWN(SSL_get_fd(con));

 					goto re_start;

 					}

 				}

 			}

 		ssl_pending = read_ssl && SSL_pending(con);

 		if (!ssl_pending)

 			{

 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE)

 			if (tty_on)

 				{

 				if (read_tty)  FD_SET(fileno(stdin),&readfds);

 				if (write_tty) FD_SET(fileno(stdout),&writefds);

 				}

 			if (read_ssl)

 				FD_SET(SSL_get_fd(con),&readfds);

 			if (write_ssl)

 				FD_SET(SSL_get_fd(con),&writefds);

 #else

 			if(!tty_on || !write_tty) {

 				if (read_ssl)

 					FD_SET(SSL_get_fd(con),&readfds);

 				if (write_ssl)

 					FD_SET(SSL_get_fd(con),&writefds);

 			}

 #endif

 /*			printf("mode tty(%d %d%d) ssl(%d%d)\n",

 				tty_on,read_tty,write_tty,read_ssl,write_ssl);*/

 			/* Note: under VMS with SOCKETSHR the second parameter

 			 * is currently of type (int *) whereas under other

 			 * systems it is (void *) if you don't have a cast it

 			 * will choke the compiler: if you do have a cast then

 			 * you can either go for (int *) or (void *).

 			 */

 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)

                         /* Under Windows/DOS we make the assumption that we can

 			 * always write to the tty: therefore if we need to

 			 * write to the tty we just fall through. Otherwise

 			 * we timeout the select every second and see if there

 			 * are any keypresses. Note: this is a hack, in a proper

 			 * Windows application we wouldn't do this.

 			 */

 			i=0;

 			if(!write_tty) {

 				if(read_tty) {

 					tv.tv_sec = 1;

 					tv.tv_usec = 0;

 					i=select(width,(void *)&readfds,(void *)&writefds,

 						 NULL,&tv);

 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)

 					if(!i && (!_kbhit() || !read_tty) ) continue;

 #else

 					if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;

 #endif

 				} else 	i=select(width,(void *)&readfds,(void *)&writefds,

 					 NULL,NULL);

 			}

 #elif defined(OPENSSL_SYS_NETWARE)

 			if(!write_tty) {

 				if(read_tty) {

 					tv.tv_sec = 1;

 					tv.tv_usec = 0;

 					i=select(width,(void *)&readfds,(void *)&writefds,

 						NULL,&tv);

 				} else 	i=select(width,(void *)&readfds,(void *)&writefds,

 					NULL,NULL);

 			}

 #else

 			i=select(width,(void *)&readfds,(void *)&writefds,

 				 NULL,NULL);

 #endif

 			if ( i < 0)

 				{

 				BIO_printf(bio_err,"bad select %d\n",

 				get_last_socket_error());

 				goto shut;

 				/* goto end; */

 				}

 			}

 		if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))

 			{

 			k=SSL_write(con,&(cbuf[cbuf_off]),

 				(unsigned int)cbuf_len);

 			switch (SSL_get_error(con,k))

 				{

 			case SSL_ERROR_NONE:

 				cbuf_off+=k;

 				cbuf_len-=k;

 				if (k <= 0) goto end;

 				/* we have done a  write(con,NULL,0); */

 				if (cbuf_len <= 0)

 					{

 					read_tty=1;

 					write_ssl=0;

 					}

 				else /* if (cbuf_len > 0) */

 					{

 					read_tty=0;

 					write_ssl=1;

 					}

 				break;

 			case SSL_ERROR_WANT_WRITE:

 				BIO_printf(bio_c_out,"write W BLOCK\n");

 				write_ssl=1;

 				read_tty=0;

 				break;

 			case SSL_ERROR_WANT_READ:

 				BIO_printf(bio_c_out,"write R BLOCK\n");

 				write_tty=0;

 				read_ssl=1;

 				write_ssl=0;

 				break;

 			case SSL_ERROR_WANT_X509_LOOKUP:

 				BIO_printf(bio_c_out,"write X BLOCK\n");

 				break;

 			case SSL_ERROR_ZERO_RETURN:

 				if (cbuf_len != 0)

 					{

 					BIO_printf(bio_c_out,"shutdown\n");

 					goto shut;

 					}

 				else

 					{

 					read_tty=1;

 					write_ssl=0;

 					break;

 					}

 			case SSL_ERROR_SYSCALL:

 				if ((k != 0) || (cbuf_len != 0))

 					{

 					BIO_printf(bio_err,"write:errno=%d\n",

 						get_last_socket_error());

 					goto shut;

 					}

 				else

 					{

 					read_tty=1;

 					write_ssl=0;

 					}

 				break;

 			case SSL_ERROR_SSL:

 				ERR_print_errors(bio_err);

 				goto shut;

 				}

 			}

 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)

 		/* Assume Windows/DOS can always write */

 		else if (!ssl_pending && write_tty)

 #else

 		else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))

 #endif

 			{

 #ifdef CHARSET_EBCDIC

 			ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);

 #endif

 			i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);

 			if (i <= 0)

 				{

 				BIO_printf(bio_c_out,"DONE\n");

 				goto shut;

 				/* goto end; */

 				}

 			sbuf_len-=i;;

 			sbuf_off+=i;

 			if (sbuf_len <= 0)

 				{

 				read_ssl=1;

 				write_tty=0;

 				}

 			}

 		else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))

 			{

 #ifdef RENEG

 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }

 #endif

 #if 1

 			k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );

 #else

 /* Demo for pending and peek :-) */

 			k=SSL_read(con,sbuf,16);

 { char zbuf[10240]; 

 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));

 }

 #endif

 			switch (SSL_get_error(con,k))

 				{

 			case SSL_ERROR_NONE:

 				if (k <= 0)

 					goto end;

 				sbuf_off=0;

 				sbuf_len=k;

 				read_ssl=0;

 				write_tty=1;

 				break;

 			case SSL_ERROR_WANT_WRITE:

 				BIO_printf(bio_c_out,"read W BLOCK\n");

 				write_ssl=1;

 				read_tty=0;

 				break;

 			case SSL_ERROR_WANT_READ:

 				BIO_printf(bio_c_out,"read R BLOCK\n");

 				write_tty=0;

 				read_ssl=1;

 				if ((read_tty == 0) && (write_ssl == 0))

 					write_ssl=1;

 				break;

 			case SSL_ERROR_WANT_X509_LOOKUP:

 				BIO_printf(bio_c_out,"read X BLOCK\n");

 				break;

 			case SSL_ERROR_SYSCALL:

 				BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());

 				goto shut;

 			case SSL_ERROR_ZERO_RETURN:

 				BIO_printf(bio_c_out,"closed\n");

 				goto shut;

 			case SSL_ERROR_SSL:

 				ERR_print_errors(bio_err);

 				goto shut;

 				/* break; */

 				}

 			}

 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)

 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)

 		else if (_kbhit())

 #else

 		else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))

 #endif

 #elif defined (OPENSSL_SYS_NETWARE)

         else if (_kbhit())

 #else

 		else if (FD_ISSET(fileno(stdin),&readfds))

 #endif

 			{

 			if (crlf)

 				{

 				int j, lf_num;

 				i=read(fileno(stdin),cbuf,BUFSIZZ/2);

 				lf_num = 0;

 				/* both loops are skipped when i <= 0 */

 				for (j = 0; j < i; j++)

 					if (cbuf[j] == '\n')

 						lf_num++;

 				for (j = i-1; j >= 0; j--)

 					{

 					cbuf[j+lf_num] = cbuf[j];

 					if (cbuf[j] == '\n')

 						{

 						lf_num--;

 						i++;

 						cbuf[j+lf_num] = '\r';

 						}

 					}

 				assert(lf_num == 0);

 				}

 			else

 				i=read(fileno(stdin),cbuf,BUFSIZZ);

 			if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))

 				{

 				BIO_printf(bio_err,"DONE\n");

 				goto shut;

 				}

 			if ((!c_ign_eof) && (cbuf[0] == 'R'))

 				{

 				BIO_printf(bio_err,"RENEGOTIATING\n");

 				SSL_renegotiate(con);

 				cbuf_len=0;

 				}

 			else

 				{

 				cbuf_len=i;

 				cbuf_off=0;

 #ifdef CHARSET_EBCDIC

 				ebcdic2ascii(cbuf, cbuf, i);

 #endif

 				}

 			write_ssl=1;

 			read_tty=0;

 			}

 		}

 shut:

 	SSL_shutdown(con);

 	SHUTDOWN(SSL_get_fd(con));

 	ret=0;

 end:

 	if(prexit) print_stuff(bio_c_out,con,1);

 	if (con != NULL) SSL_free(con);

 	if (con2 != NULL) SSL_free(con2);

 	if (ctx != NULL) SSL_CTX_free(ctx);

 	if (cert)

 		X509_free(cert);

 	if (key)

 		EVP_PKEY_free(key);

 	if (pass)

 		OPENSSL_free(pass);

 	if (cbuf != NULL) { OPENSSL_cleanse(cbuf,BUFSIZZ); OPENSSL_free(cbuf); }

 	if (sbuf != NULL) { OPENSSL_cleanse(sbuf,BUFSIZZ); OPENSSL_free(sbuf); }

 	if (mbuf != NULL) { OPENSSL_cleanse(mbuf,BUFSIZZ); OPENSSL_free(mbuf); }

 	if (bio_c_out != NULL)

 		{

 		BIO_free(bio_c_out);

 		bio_c_out=NULL;

 		}

 	apps_shutdown();

 	OPENSSL_EXIT(ret);

 	}

 static void print_stuff(BIO *bio, SSL *s, int full)

 	{

 	X509 *peer=NULL;

 	char *p;

 	static const char *space="                ";

 	char buf[BUFSIZ];

 	STACK_OF(X509) *sk;

 	STACK_OF(X509_NAME) *sk2;

 	SSL_CIPHER *c;

 	X509_NAME *xn;

 	int j,i;

 #ifndef OPENSSL_NO_COMP

 	const COMP_METHOD *comp, *expansion;

 #endif

 	if (full)

 		{

 		int got_a_chain = 0;

 		sk=SSL_get_peer_cert_chain(s);

 		if (sk != NULL)

 			{

 			got_a_chain = 1; /* we don't have it for SSL2 (yet) */

 			BIO_printf(bio,"---\nCertificate chain\n");

 			for (i=0; i<sk_X509_num(sk); i++)

 				{

 				X509_NAME_oneline(X509_get_subject_name(

 					sk_X509_value(sk,i)),buf,sizeof buf);

 				BIO_printf(bio,"%2d s:%s\n",i,buf);

 				X509_NAME_oneline(X509_get_issuer_name(

 					sk_X509_value(sk,i)),buf,sizeof buf);

 				BIO_printf(bio,"   i:%s\n",buf);

 				if (c_showcerts)

 					PEM_write_bio_X509(bio,sk_X509_value(sk,i));

 				}

 			}

 		BIO_printf(bio,"---\n");

 		peer=SSL_get_peer_certificate(s);

 		if (peer != NULL)

 			{

 			BIO_printf(bio,"Server certificate\n");

 			if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */

 				PEM_write_bio_X509(bio,peer);

 			X509_NAME_oneline(X509_get_subject_name(peer),

 				buf,sizeof buf);

 			BIO_printf(bio,"subject=%s\n",buf);

 			X509_NAME_oneline(X509_get_issuer_name(peer),

 				buf,sizeof buf);

 			BIO_printf(bio,"issuer=%s\n",buf);

 			}

 		else

 			BIO_printf(bio,"no peer certificate available\n");

 		sk2=SSL_get_client_CA_list(s);

 		if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))

 			{

 			BIO_printf(bio,"---\nAcceptable client certificate CA names\n");

 			for (i=0; i<sk_X509_NAME_num(sk2); i++)

 				{

 				xn=sk_X509_NAME_value(sk2,i);

 				X509_NAME_oneline(xn,buf,sizeof(buf));

 				BIO_write(bio,buf,strlen(buf));

 				BIO_write(bio,"\n",1);

 				}

 			}

 		else

 			{

 			BIO_printf(bio,"---\nNo client certificate CA names sent\n");

 			}

 		p=SSL_get_shared_ciphers(s,buf,sizeof buf);

 		if (p != NULL)

 			{

 			/* This works only for SSL 2.  In later protocol

 			 * versions, the client does not know what other

 			 * ciphers (in addition to the one to be used

 			 * in the current connection) the server supports. */

 			BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");

 			j=i=0;

 			while (*p)

 				{

 				if (*p == ':')

 					{

 					BIO_write(bio,space,15-j%25);

 					i++;

 					j=0;

 					BIO_write(bio,((i%3)?" ":"\n"),1);

 					}

 				else

 					{

 					BIO_write(bio,p,1);

 					j++;

 					}

 				p++;

 				}

 			BIO_write(bio,"\n",1);

 			}

 		BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",

 			BIO_number_read(SSL_get_rbio(s)),

 			BIO_number_written(SSL_get_wbio(s)));

 		}

 	BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));

 	c=SSL_get_current_cipher(s);

 	BIO_printf(bio,"%s, Cipher is %s\n",

 		SSL_CIPHER_get_version(c),

 		SSL_CIPHER_get_name(c));

 	if (peer != NULL) {

 		EVP_PKEY *pktmp;

 		pktmp = X509_get_pubkey(peer);

 		BIO_printf(bio,"Server public key is %d bit\n",

 							 EVP_PKEY_bits(pktmp));

 		EVP_PKEY_free(pktmp);

 	}

 #ifndef OPENSSL_NO_COMP

 	comp=SSL_get_current_compression(s);

 	expansion=SSL_get_current_expansion(s);

 	BIO_printf(bio,"Compression: %s\n",

 		comp ? SSL_COMP_get_name(comp) : "NONE");

 	BIO_printf(bio,"Expansion: %s\n",

 		expansion ? SSL_COMP_get_name(expansion) : "NONE");

 #endif

 	SSL_SESSION_print(bio,SSL_get_session(s));

 	BIO_printf(bio,"---\n");

 	if (peer != NULL)

 		X509_free(peer);

 	/* flush, or debugging output gets mixed with http response */

 	BIO_flush(bio);

 	}