/* 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) 1998-2006 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).
 *
 */
/* ====================================================================
 * Copyright 2005 Nokia. All rights reserved.
 *
 * The portions of the attached software ("Contribution") is developed by
 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
 * license.
 *
 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
 * support (see RFC 4279) to OpenSSL.
 *
 * No patent licenses or other rights except those expressly stated in
 * the OpenSSL open source license shall be deemed granted or received
 * expressly, by implication, estoppel, or otherwise.
 *
 * No assurances are provided by Nokia that the Contribution does not
 * infringe the patent or other intellectual property rights of any third
 * party or that the license provides you with all the necessary rights
 * to make use of the Contribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
 * OTHERWISE.
 */

#include <assert.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <openssl/e_os2.h>
/* 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 <openssl/ocsp.h>
#include <openssl/bn.h>
#ifndef OPENSSL_NO_SRP
#include <openssl/srp.h>
#endif
#include "s_apps.h"
#include "timeouts.h"

#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"

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

#undef BUFSIZZ
#define BUFSIZZ 1024*8

extern int verify_depth;
extern int verify_error;
extern int verify_return_error;
extern int verify_quiet;

#ifdef FIONBIO
static int c_nbio=0;
#endif
static int c_Pause=0;
static int c_debug=0;
#ifndef OPENSSL_NO_TLSEXT
static int c_tlsextdebug=0;
static int c_status_req=0;
#endif
static int c_msg=0;
static int c_showcerts=0;

static char *keymatexportlabel=NULL;
static int keymatexportlen=20;

static void sc_usage(void);
static void print_stuff(BIO *berr,SSL *con,int full);
#ifndef OPENSSL_NO_TLSEXT
static int ocsp_resp_cb(SSL *s, void *arg);
#endif
static BIO *bio_c_out=NULL;
static BIO *bio_c_msg=NULL;
static int c_quiet=0;
static int c_ign_eof=0;
static int c_brief=0;

#ifndef OPENSSL_NO_PSK
/* Default PSK identity and key */
static char *psk_identity="Client_identity";
/*char *psk_key=NULL;  by default PSK is not used */

static unsigned int psk_client_cb(SSL *ssl, const char *hint, char *identity,
	unsigned int max_identity_len, unsigned char *psk,
	unsigned int max_psk_len)
	{
	unsigned int psk_len = 0;
	int ret;
        BIGNUM *bn=NULL;

	if (c_debug)
		BIO_printf(bio_c_out, "psk_client_cb\n");
	if (!hint)
                {
                /* no ServerKeyExchange message*/
		if (c_debug)
			BIO_printf(bio_c_out,"NULL received PSK identity hint, continuing anyway\n");
                }
        else if (c_debug)
		BIO_printf(bio_c_out, "Received PSK identity hint '%s'\n", hint);

	/* lookup PSK identity and PSK key based on the given identity hint here */
	ret = BIO_snprintf(identity, max_identity_len, "%s", psk_identity);
	if (ret < 0 || (unsigned int)ret > max_identity_len)
		goto out_err;
	if (c_debug)
		BIO_printf(bio_c_out, "created identity '%s' len=%d\n", identity, ret);
        ret=BN_hex2bn(&bn, psk_key);
        if (!ret)
                {
                BIO_printf(bio_err,"Could not convert PSK key '%s' to BIGNUM\n", psk_key);
                if (bn)
                        BN_free(bn);
                return 0;
                }

        if ((unsigned int)BN_num_bytes(bn) > max_psk_len)
                {
                BIO_printf(bio_err,"psk buffer of callback is too small (%d) for key (%d)\n",
                        max_psk_len, BN_num_bytes(bn));
                BN_free(bn);
                return 0;
                }

        psk_len=BN_bn2bin(bn, psk);
        BN_free(bn);
        if (psk_len == 0)
                goto out_err;

	if (c_debug)
		BIO_printf(bio_c_out, "created PSK len=%d\n", psk_len);

        return psk_len;
 out_err:
	if (c_debug)
		BIO_printf(bio_err, "Error in PSK client callback\n");
        return 0;
	}
#endif

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 - connect over TCP/IP (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
	BIO_printf(bio_err," -unix path    - connect over unix domain sockets\n");
	BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
	BIO_printf(bio_err," -verify_return_error - return verification errors\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," -trusted_first - Use local CA's first when building trust chain\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," -prexit       - print session information even on connection failure\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," -no_ign_eof   - don't ignore input eof\n");
#ifndef OPENSSL_NO_PSK
	BIO_printf(bio_err," -psk_identity arg - PSK identity\n");
	BIO_printf(bio_err," -psk arg      - PSK in hex (without 0x)\n");
# ifndef OPENSSL_NO_JPAKE
	BIO_printf(bio_err," -jpake arg    - JPAKE secret to use\n");
# endif
#endif
#ifndef OPENSSL_NO_SRP
	BIO_printf(bio_err," -srpuser user     - SRP authentification for 'user'\n");
	BIO_printf(bio_err," -srppass arg      - password for 'user'\n");
	BIO_printf(bio_err," -srp_lateuser     - SRP username into second ClientHello message\n");
	BIO_printf(bio_err," -srp_moregroups   - Tolerate other than the known g N values.\n");
	BIO_printf(bio_err," -srp_strength int - minimal length in bits for N (default %d).\n",SRP_MINIMAL_N);
#endif
#ifndef OPENSSL_NO_SSL3_METHOD
	BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
#endif
	BIO_printf(bio_err," -tls1_2       - just use TLSv1.2\n");
	BIO_printf(bio_err," -tls1_1       - just use TLSv1.1\n");
	BIO_printf(bio_err," -tls1         - just use TLSv1\n");
	BIO_printf(bio_err," -dtls1        - just use DTLSv1\n");    
	BIO_printf(bio_err," -fallback_scsv - send TLS_FALLBACK_SCSV\n");
	BIO_printf(bio_err," -mtu          - set the link layer MTU\n");
	BIO_printf(bio_err," -no_tls1_2/-no_tls1_1/-no_tls1/-no_ssl3 - turn off that protocol\n");
	BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\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\", \"pop3\", \"imap\", \"ftp\" and \"xmpp\"\n");
	BIO_printf(bio_err,"                 are supported.\n");
	BIO_printf(bio_err," -xmpphost host - When used with \"-starttls xmpp\" specifies the virtual host.\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);
	BIO_printf(bio_err," -sess_out arg - file to write SSL session to\n");
	BIO_printf(bio_err," -sess_in arg  - file to read SSL session from\n");
#ifndef OPENSSL_NO_TLSEXT
	BIO_printf(bio_err," -servername host  - Set TLS extension servername in ClientHello\n");
	BIO_printf(bio_err," -tlsextdebug      - hex dump of all TLS extensions received\n");
	BIO_printf(bio_err," -status           - request certificate status from server\n");
	BIO_printf(bio_err," -no_ticket        - disable use of RFC4507bis session tickets\n");
	BIO_printf(bio_err," -serverinfo types - send empty ClientHello extensions (comma-separated numbers)\n");
# ifndef OPENSSL_NO_NEXTPROTONEG
	BIO_printf(bio_err," -nextprotoneg arg - enable NPN extension, considering named protocols supported (comma-separated list)\n");
# endif
	BIO_printf(bio_err," -alpn arg         - enable ALPN extension, considering named protocols supported (comma-separated list)\n");
#endif
	BIO_printf(bio_err," -legacy_renegotiation - enable use of legacy renegotiation (dangerous)\n");
#ifndef OPENSSL_NO_SRTP
	BIO_printf(bio_err," -use_srtp profiles - Offer SRTP key management with a colon-separated profile list\n");
#endif
 	BIO_printf(bio_err," -keymatexport label   - Export keying material using label\n");
 	BIO_printf(bio_err," -keymatexportlen len  - Export len bytes of keying material (default 20)\n");
	}

#ifndef OPENSSL_NO_TLSEXT

/* This is a context that we pass to callbacks */
typedef struct tlsextctx_st {
   BIO * biodebug;
   int ack;
} tlsextctx;


static int ssl_servername_cb(SSL *s, int *ad, void *arg)
	{
	tlsextctx * p = (tlsextctx *) arg;
	const char * hn= SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
	if (SSL_get_servername_type(s) != -1) 
 	        p->ack = !SSL_session_reused(s) && hn != NULL;
	else 
		BIO_printf(bio_err,"Can't use SSL_get_servername\n");
	
	return SSL_TLSEXT_ERR_OK;
	}

#ifndef OPENSSL_NO_SRP

/* This is a context that we pass to all callbacks */
typedef struct srp_arg_st
	{
	char *srppassin;
	char *srplogin;
	int msg;   /* copy from c_msg */
	int debug; /* copy from c_debug */
	int amp;   /* allow more groups */
	int strength /* minimal size for N */ ;
	} SRP_ARG;

#define SRP_NUMBER_ITERATIONS_FOR_PRIME 64

static int srp_Verify_N_and_g(const BIGNUM *N, const BIGNUM *g)
	{
	BN_CTX *bn_ctx = BN_CTX_new();
	BIGNUM *p = BN_new();
	BIGNUM *r = BN_new();
	int ret =
		g != NULL && N != NULL && bn_ctx != NULL && BN_is_odd(N) &&
		BN_is_prime_ex(N, SRP_NUMBER_ITERATIONS_FOR_PRIME, bn_ctx, NULL) &&
		p != NULL && BN_rshift1(p, N) &&

		/* p = (N-1)/2 */
		BN_is_prime_ex(p, SRP_NUMBER_ITERATIONS_FOR_PRIME, bn_ctx, NULL) &&
		r != NULL &&

		/* verify g^((N-1)/2) == -1 (mod N) */
		BN_mod_exp(r, g, p, N, bn_ctx) &&
		BN_add_word(r, 1) &&
		BN_cmp(r, N) == 0;

	if(r)
		BN_free(r);
	if(p)
		BN_free(p);
	if(bn_ctx)
		BN_CTX_free(bn_ctx);
	return ret;
	}

/*-
 * This callback is used here for two purposes:
 * - extended debugging
 * - making some primality tests for unknown groups
 * The callback is only called for a non default group.
 *
 * An application does not need the call back at all if
 * only the stanard groups are used.  In real life situations, 
 * client and server already share well known groups, 
 * thus there is no need to verify them. 
 * Furthermore, in case that a server actually proposes a group that
 * is not one of those defined in RFC 5054, it is more appropriate 
 * to add the group to a static list and then compare since 
 * primality tests are rather cpu consuming.
 */

static int ssl_srp_verify_param_cb(SSL *s, void *arg)
	{
	SRP_ARG *srp_arg = (SRP_ARG *)arg;
	BIGNUM *N = NULL, *g = NULL;
	if (!(N = SSL_get_srp_N(s)) || !(g = SSL_get_srp_g(s)))
		return 0;
	if (srp_arg->debug || srp_arg->msg || srp_arg->amp == 1)
		{
    		BIO_printf(bio_err, "SRP parameters:\n"); 
		BIO_printf(bio_err,"\tN="); BN_print(bio_err,N);
		BIO_printf(bio_err,"\n\tg="); BN_print(bio_err,g);
		BIO_printf(bio_err,"\n");
		}

	if (SRP_check_known_gN_param(g,N))
		return 1;

	if (srp_arg->amp == 1)
		{
		if (srp_arg->debug)
			BIO_printf(bio_err, "SRP param N and g are not known params, going to check deeper.\n");

/* The srp_moregroups is a real debugging feature.
   Implementors should rather add the value to the known ones.
   The minimal size has already been tested.
*/
		if (BN_num_bits(g) <= BN_BITS && srp_Verify_N_and_g(N,g))
			return 1;
		}	
	BIO_printf(bio_err, "SRP param N and g rejected.\n");
	return 0;
	}

#define PWD_STRLEN 1024

static char * ssl_give_srp_client_pwd_cb(SSL *s, void *arg)
	{
	SRP_ARG *srp_arg = (SRP_ARG *)arg;
	char *pass = (char *)OPENSSL_malloc(PWD_STRLEN+1);
	PW_CB_DATA cb_tmp;
	int l;

	cb_tmp.password = (char *)srp_arg->srppassin;
	cb_tmp.prompt_info = "SRP user";
	if ((l = password_callback(pass, PWD_STRLEN, 0, &cb_tmp))<0)
		{
		BIO_printf (bio_err, "Can't read Password\n");
		OPENSSL_free(pass);
		return NULL;
		}
	*(pass+l)= '\0';

	return pass;
	}

#endif
#ifndef OPENSSL_NO_SRTP
	char *srtp_profiles = NULL;
#endif

# ifndef OPENSSL_NO_NEXTPROTONEG
/* This the context that we pass to next_proto_cb */
typedef struct tlsextnextprotoctx_st {
	unsigned char *data;
	unsigned short len;
	int status;
} tlsextnextprotoctx;

static tlsextnextprotoctx next_proto;

static int next_proto_cb(SSL *s, unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg)
	{
	tlsextnextprotoctx *ctx = arg;

	if (!c_quiet)
		{
		/* We can assume that |in| is syntactically valid. */
		unsigned i;
		BIO_printf(bio_c_out, "Protocols advertised by server: ");
		for (i = 0; i < inlen; )
			{
			if (i)
				BIO_write(bio_c_out, ", ", 2);
			BIO_write(bio_c_out, &in[i + 1], in[i]);
			i += in[i] + 1;
			}
		BIO_write(bio_c_out, "\n", 1);
		}

	ctx->status = SSL_select_next_proto(out, outlen, in, inlen, ctx->data, ctx->len);
	return SSL_TLSEXT_ERR_OK;
	}
# endif  /* ndef OPENSSL_NO_NEXTPROTONEG */

static int serverinfo_cli_parse_cb(SSL* s, unsigned int ext_type,
				   const unsigned char* in, size_t inlen, 
				   int* al, void* arg)
	{
	char pem_name[100];
	unsigned char ext_buf[4 + 65536];

	/* Reconstruct the type/len fields prior to extension data */
	ext_buf[0] = ext_type >> 8;
	ext_buf[1] = ext_type & 0xFF;
	ext_buf[2] = inlen >> 8;
	ext_buf[3] = inlen & 0xFF;
	memcpy(ext_buf+4, in, inlen);

	BIO_snprintf(pem_name, sizeof(pem_name), "SERVERINFO FOR EXTENSION %d",
		     ext_type);
	PEM_write_bio(bio_c_out, pem_name, "", ext_buf, 4 + inlen);
	return 1;
	}

#endif

enum
{
	PROTO_OFF	= 0,
	PROTO_SMTP,
	PROTO_POP3,
	PROTO_IMAP,
	PROTO_FTP,
	PROTO_XMPP
};

int MAIN(int, char **);

int MAIN(int argc, char **argv)
	{
	int build_chain = 0;
	SSL *con=NULL;
#ifndef OPENSSL_NO_KRB5
	KSSL_CTX *kctx;
#endif
	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;
	const char *unix_path = NULL;
	char *xmpphost = NULL;
	char *cert_file=NULL,*key_file=NULL,*chain_file=NULL;
	int cert_format = FORMAT_PEM, key_format = FORMAT_PEM;
	char *passarg = NULL, *pass = NULL;
	X509 *cert = NULL;
	EVP_PKEY *key = NULL;
	STACK_OF(X509) *chain = NULL;
	char *CApath=NULL,*CAfile=NULL;
	char *chCApath=NULL,*chCAfile=NULL;
	char *vfyCApath=NULL,*vfyCAfile=NULL;
	int reconnect=0,badop=0,verify=SSL_VERIFY_NONE;
	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 = PROTO_OFF;
	int prexit = 0;
	X509_VERIFY_PARAM *vpm = NULL;
	int badarg = 0;
	const SSL_METHOD *meth=NULL;
	int socket_type=SOCK_STREAM;
	BIO *sbio;
	char *inrand=NULL;
	int mbuf_len=0;
	struct timeval timeout, *timeoutp;
#ifndef OPENSSL_NO_ENGINE
	char *engine_id=NULL;
	char *ssl_client_engine_id=NULL;
	ENGINE *ssl_client_engine=NULL;
#endif
	ENGINE *e=NULL;
#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
	struct timeval tv;
#endif
#ifndef OPENSSL_NO_TLSEXT
	char *servername = NULL; 
        tlsextctx tlsextcbp = 
        {NULL,0};
# ifndef OPENSSL_NO_NEXTPROTONEG
	const char *next_proto_neg_in = NULL;
# endif
	const char *alpn_in = NULL;
# define MAX_SI_TYPES 100
	unsigned short serverinfo_types[MAX_SI_TYPES];
	int serverinfo_types_count = 0;
#endif
	char *sess_in = NULL;
	char *sess_out = NULL;
	struct sockaddr peer;
	int peerlen = sizeof(peer);
	int fallback_scsv = 0;
	int enable_timeouts = 0 ;
	long socket_mtu = 0;
#ifndef OPENSSL_NO_JPAKE
static char *jpake_secret = NULL;
#define no_jpake !jpake_secret
#else
#define no_jpake 1
#endif
#ifndef OPENSSL_NO_SRP
	char * srppass = NULL;
	int srp_lateuser = 0;
	SRP_ARG srp_arg = {NULL,NULL,0,0,0,1024};
#endif
	SSL_EXCERT *exc = NULL;

	SSL_CONF_CTX *cctx = NULL;
	STACK_OF(OPENSSL_STRING) *ssl_args = NULL;

	char *crl_file = NULL;
	int crl_format = FORMAT_PEM;
	int crl_download = 0;
	STACK_OF(X509_CRL) *crls = NULL;
	int sdebug = 0;

	meth=SSLv23_client_method();

	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;
	cctx = SSL_CONF_CTX_new();
	if (!cctx)
		goto end;
	SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_CLIENT);
	SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_CMDLINE);

	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,"-unix") == 0)
			{
			if (--argc < 1) goto bad;
			unix_path = *(++argv);
			}
		else if	(strcmp(*argv,"-xmpphost") == 0)
			{
			if (--argc < 1) goto bad;
			xmpphost= *(++argv);
			}
		else if	(strcmp(*argv,"-verify") == 0)
			{
			verify=SSL_VERIFY_PEER;
			if (--argc < 1) goto bad;
			verify_depth=atoi(*(++argv));
			if (!c_quiet)
				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,"-CRL") == 0)
			{
			if (--argc < 1) goto bad;
			crl_file= *(++argv);
			}
		else if	(strcmp(*argv,"-crl_download") == 0)
			crl_download = 1;
		else if	(strcmp(*argv,"-sess_out") == 0)
			{
			if (--argc < 1) goto bad;
			sess_out = *(++argv);
			}
		else if	(strcmp(*argv,"-sess_in") == 0)
			{
			if (--argc < 1) goto bad;
			sess_in = *(++argv);
			}
		else if	(strcmp(*argv,"-certform") == 0)
			{
			if (--argc < 1) goto bad;
			cert_format = str2fmt(*(++argv));
			}
		else if	(strcmp(*argv,"-CRLform") == 0)
			{
			if (--argc < 1) goto bad;
			crl_format = str2fmt(*(++argv));
			}
		else if (args_verify(&argv, &argc, &badarg, bio_err, &vpm))
			{
			if (badarg)
				goto bad;
			continue;
			}
		else if (strcmp(*argv,"-verify_return_error") == 0)
			verify_return_error = 1;
		else if (strcmp(*argv,"-verify_quiet") == 0)
			verify_quiet = 1;
		else if (strcmp(*argv,"-brief") == 0)
			{
			c_brief = 1;
			verify_quiet = 1;
			c_quiet = 1;
			}
		else if (args_excert(&argv, &argc, &badarg, bio_err, &exc))
			{
			if (badarg)
				goto bad;
			continue;
			}
		else if (args_ssl(&argv, &argc, cctx, &badarg, bio_err, &ssl_args))
			{
			if (badarg)
				goto bad;
			continue;
			}
		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,"-no_ign_eof") == 0)
			c_ign_eof=0;
		else if	(strcmp(*argv,"-pause") == 0)
			c_Pause=1;
		else if	(strcmp(*argv,"-debug") == 0)
			c_debug=1;
#ifndef OPENSSL_NO_TLSEXT
		else if	(strcmp(*argv,"-tlsextdebug") == 0)
			c_tlsextdebug=1;
		else if	(strcmp(*argv,"-status") == 0)
			c_status_req=1;
#endif
#ifdef WATT32
		else if (strcmp(*argv,"-wdebug") == 0)
			dbug_init();
#endif
		else if	(strcmp(*argv,"-msg") == 0)
			c_msg=1;
		else if	(strcmp(*argv,"-msgfile") == 0)
			{
			if (--argc < 1) goto bad;
			bio_c_msg = BIO_new_file(*(++argv), "w");
			}
#ifndef OPENSSL_NO_SSL_TRACE
		else if	(strcmp(*argv,"-trace") == 0)
			c_msg=2;
#endif
		else if	(strcmp(*argv,"-security_debug") == 0)
			{ sdebug=1; }
		else if	(strcmp(*argv,"-security_debug_verbose") == 0)
			{ sdebug=2; }
		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_PSK
                else if (strcmp(*argv,"-psk_identity") == 0)
			{
			if (--argc < 1) goto bad;
			psk_identity=*(++argv);
			}
                else if (strcmp(*argv,"-psk") == 0)
			{
                        size_t j;

			if (--argc < 1) goto bad;
			psk_key=*(++argv);
			for (j = 0; j < strlen(psk_key); j++)
                                {
                                if (isxdigit((unsigned char)psk_key[j]))
                                        continue;
                                BIO_printf(bio_err,"Not a hex number '%s'\n",*argv);
                                goto bad;
                                }
			}
#endif
#ifndef OPENSSL_NO_SRP
		else if (strcmp(*argv,"-srpuser") == 0)
			{
			if (--argc < 1) goto bad;
			srp_arg.srplogin= *(++argv);
			meth=TLSv1_client_method();
			}
		else if (strcmp(*argv,"-srppass") == 0)
			{
			if (--argc < 1) goto bad;
			srppass= *(++argv);
			meth=TLSv1_client_method();
			}
		else if (strcmp(*argv,"-srp_strength") == 0)
			{
			if (--argc < 1) goto bad;
			srp_arg.strength=atoi(*(++argv));
			BIO_printf(bio_err,"SRP minimal length for N is %d\n",srp_arg.strength);
			meth=TLSv1_client_method();
			}
		else if (strcmp(*argv,"-srp_lateuser") == 0)
			{
			srp_lateuser= 1;
			meth=TLSv1_client_method();
			}
		else if	(strcmp(*argv,"-srp_moregroups") == 0)
			{
			srp_arg.amp=1;
			meth=TLSv1_client_method();
			}
#endif
#ifndef OPENSSL_NO_SSL3_METHOD
		else if	(strcmp(*argv,"-ssl3") == 0)
			meth=SSLv3_client_method();
#endif
#ifndef OPENSSL_NO_TLS1
		else if	(strcmp(*argv,"-tls1_2") == 0)
			meth=TLSv1_2_client_method();
		else if	(strcmp(*argv,"-tls1_1") == 0)
			meth=TLSv1_1_client_method();
		else if	(strcmp(*argv,"-tls1") == 0)
			meth=TLSv1_client_method();
#endif
#ifndef OPENSSL_NO_DTLS1
		else if	(strcmp(*argv,"-dtls") == 0)
			{
			meth=DTLS_client_method();
			socket_type=SOCK_DGRAM;
			}
		else if	(strcmp(*argv,"-dtls1") == 0)
			{
			meth=DTLSv1_client_method();
			socket_type=SOCK_DGRAM;
			}
		else if	(strcmp(*argv,"-dtls1_2") == 0)
			{
			meth=DTLSv1_2_client_method();
			socket_type=SOCK_DGRAM;
			}
		else if (strcmp(*argv,"-timeout") == 0)
			enable_timeouts=1;
		else if (strcmp(*argv,"-mtu") == 0)
			{
			if (--argc < 1) goto bad;
			socket_mtu = atol(*(++argv));
			}
#endif
		else if (strcmp(*argv,"-fallback_scsv") == 0)
			{
			fallback_scsv = 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,"-cert_chain") == 0)
			{
			if (--argc < 1) goto bad;
			chain_file= *(++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,"-chainCApath") == 0)
			{
			if (--argc < 1) goto bad;
			chCApath= *(++argv);
			}
		else if	(strcmp(*argv,"-verifyCApath") == 0)
			{
			if (--argc < 1) goto bad;
			vfyCApath= *(++argv);
			}
		else if	(strcmp(*argv,"-build_chain") == 0)
			build_chain = 1;
		else if	(strcmp(*argv,"-CAfile") == 0)
			{
			if (--argc < 1) goto bad;
			CAfile= *(++argv);
			}
		else if	(strcmp(*argv,"-chainCAfile") == 0)
			{
			if (--argc < 1) goto bad;
			chCAfile= *(++argv);
			}
		else if	(strcmp(*argv,"-verifyCAfile") == 0)
			{
			if (--argc < 1) goto bad;
			vfyCAfile= *(++argv);
			}
#ifndef OPENSSL_NO_TLSEXT
# ifndef OPENSSL_NO_NEXTPROTONEG
		else if (strcmp(*argv,"-nextprotoneg") == 0)
			{
			if (--argc < 1) goto bad;
			next_proto_neg_in = *(++argv);
			}
# endif
		else if (strcmp(*argv,"-alpn") == 0)
			{
			if (--argc < 1) goto bad;
			alpn_in = *(++argv);
			}
		else if (strcmp(*argv,"-serverinfo") == 0)
			{
			char *c;
			int start = 0;
			int len;

			if (--argc < 1) goto bad;
			c = *(++argv);
			serverinfo_types_count = 0;
			len = strlen(c);
			for (i = 0; i <= len; ++i)
				{
				if (i == len || c[i] == ',')
					{
					serverinfo_types[serverinfo_types_count]
					    = atoi(c+start);
					serverinfo_types_count++;
					start = i+1;
					}
				if (serverinfo_types_count == MAX_SI_TYPES)
					break;
				}
			}
#endif
#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 = PROTO_SMTP;
			else if (strcmp(*argv,"pop3") == 0)
				starttls_proto = PROTO_POP3;
			else if (strcmp(*argv,"imap") == 0)
				starttls_proto = PROTO_IMAP;
			else if (strcmp(*argv,"ftp") == 0)
				starttls_proto = PROTO_FTP;
			else if (strcmp(*argv, "xmpp") == 0)
				starttls_proto = PROTO_XMPP;
			else
				goto bad;
			}
#ifndef OPENSSL_NO_ENGINE
		else if	(strcmp(*argv,"-engine") == 0)
			{
			if (--argc < 1) goto bad;
			engine_id = *(++argv);
			}
		else if	(strcmp(*argv,"-ssl_client_engine") == 0)
			{
			if (--argc < 1) goto bad;
			ssl_client_engine_id = *(++argv);
			}
#endif
		else if (strcmp(*argv,"-rand") == 0)
			{
			if (--argc < 1) goto bad;
			inrand= *(++argv);
			}
#ifndef OPENSSL_NO_TLSEXT
		else if (strcmp(*argv,"-servername") == 0)
			{
			if (--argc < 1) goto bad;
			servername= *(++argv);
			/* meth=TLSv1_client_method(); */
			}
#endif
#ifndef OPENSSL_NO_JPAKE
		else if (strcmp(*argv,"-jpake") == 0)
			{
			if (--argc < 1) goto bad;
			jpake_secret = *++argv;
			}
#endif
#ifndef OPENSSL_NO_SRTP
		else if (strcmp(*argv,"-use_srtp") == 0)
			{
			if (--argc < 1) goto bad;
			srtp_profiles = *(++argv);
			}
#endif
		else if (strcmp(*argv,"-keymatexport") == 0)
			{
			if (--argc < 1) goto bad;
			keymatexportlabel= *(++argv);
			}
		else if (strcmp(*argv,"-keymatexportlen") == 0)
			{
			if (--argc < 1) goto bad;
			keymatexportlen=atoi(*(++argv));
			if (keymatexportlen == 0) goto bad;
			}
                else
			{
			BIO_printf(bio_err,"unknown option %s\n",*argv);
			badop=1;
			break;
			}
		argc--;
		argv++;
		}
	if (badop)
		{
bad:
		sc_usage();
		goto end;
		}

	if (unix_path && (socket_type != SOCK_STREAM))
		{
		BIO_printf(bio_err, "Can't use unix sockets and datagrams together\n");
			goto end;
		}
#if !defined(OPENSSL_NO_JPAKE) && !defined(OPENSSL_NO_PSK)
	if (jpake_secret)
		{
		if (psk_key)
			{
			BIO_printf(bio_err,
				   "Can't use JPAKE and PSK together\n");
			goto end;
			}
		psk_identity = "JPAKE";
		}
#endif

	OpenSSL_add_ssl_algorithms();
	SSL_load_error_strings();

#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
	next_proto.status = -1;
	if (next_proto_neg_in)
		{
		next_proto.data = next_protos_parse(&next_proto.len, next_proto_neg_in);
		if (next_proto.data == NULL)
			{
			BIO_printf(bio_err, "Error parsing -nextprotoneg argument\n");
			goto end;
			}
		}
	else
		next_proto.data = NULL;
#endif

#ifndef OPENSSL_NO_ENGINE
        e = setup_engine(bio_err, engine_id, 1);
	if (ssl_client_engine_id)
		{
		ssl_client_engine = ENGINE_by_id(ssl_client_engine_id);
		if (!ssl_client_engine)
			{
			BIO_printf(bio_err,
					"Error getting client auth engine\n");
			goto end;
			}
		}

#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 (chain_file)
		{
		chain = load_certs(bio_err, chain_file,FORMAT_PEM,
					NULL, e, "client certificate chain");
		if (!chain)
			goto end;
		}

	if (crl_file)
		{
		X509_CRL *crl;
		crl = load_crl(crl_file, crl_format);
		if (!crl)
			{
			BIO_puts(bio_err, "Error loading CRL\n");
			ERR_print_errors(bio_err);
			goto end;
			}
		crls = sk_X509_CRL_new_null();
		if (!crls || !sk_X509_CRL_push(crls, crl))
			{
			BIO_puts(bio_err, "Error adding CRL\n");
			ERR_print_errors(bio_err);
			X509_CRL_free(crl);
			goto end;
			}
		}

	if (!load_excert(&exc, 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)
			{
			bio_c_out=BIO_new(BIO_s_null());
			if (c_msg && !bio_c_msg)
				bio_c_msg=BIO_new_fp(stdout,BIO_NOCLOSE);
			}
		else
			{
			if (bio_c_out == NULL)
				bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
			}
		}

#ifndef OPENSSL_NO_SRP
	if(!app_passwd(bio_err, srppass, NULL, &srp_arg.srppassin, NULL))
		{
		BIO_printf(bio_err, "Error getting password\n");
		goto end;
		}
#endif

	ctx=SSL_CTX_new(meth);
	if (ctx == NULL)
		{
		ERR_print_errors(bio_err);
		goto end;
		}

	if (sdebug)
		ssl_ctx_security_debug(ctx, bio_err, sdebug);

	if (vpm)
		SSL_CTX_set1_param(ctx, vpm);

	if (!args_ssl_call(ctx, bio_err, cctx, ssl_args, 1, no_jpake))
		{
		ERR_print_errors(bio_err);
		goto end;
		}

	if (!ssl_load_stores(ctx, vfyCApath, vfyCAfile, chCApath, chCAfile,
						crls, crl_download))
		{
		BIO_printf(bio_err, "Error loading store locations\n");
		ERR_print_errors(bio_err);
		goto end;
		}

#ifndef OPENSSL_NO_ENGINE
	if (ssl_client_engine)
		{
		if (!SSL_CTX_set_client_cert_engine(ctx, ssl_client_engine))
			{
			BIO_puts(bio_err, "Error setting client auth engine\n");
			ERR_print_errors(bio_err);
			ENGINE_free(ssl_client_engine);
			goto end;
			}
		ENGINE_free(ssl_client_engine);
		}
#endif

#ifndef OPENSSL_NO_PSK
#ifdef OPENSSL_NO_JPAKE
	if (psk_key != NULL)
#else
	if (psk_key != NULL || jpake_secret)
#endif
		{
		if (c_debug)
			BIO_printf(bio_c_out, "PSK key given or JPAKE in use, setting client callback\n");
		SSL_CTX_set_psk_client_callback(ctx, psk_client_cb);
		}
#endif
#ifndef OPENSSL_NO_SRTP
	if (srtp_profiles != NULL)
		SSL_CTX_set_tlsext_use_srtp(ctx, srtp_profiles);
#endif
	if (exc) ssl_ctx_set_excert(ctx, exc);
	/* DTLS: partial reads end up discarding unread UDP bytes :-( 
	 * Setting read ahead solves this problem.
	 */
	if (socket_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);

#if !defined(OPENSSL_NO_TLSEXT)
# if !defined(OPENSSL_NO_NEXTPROTONEG)
	if (next_proto.data)
		SSL_CTX_set_next_proto_select_cb(ctx, next_proto_cb, &next_proto);
# endif
	if (alpn_in)
		{
		unsigned short alpn_len;
		unsigned char *alpn = next_protos_parse(&alpn_len, alpn_in);

		if (alpn == NULL)
			{
			BIO_printf(bio_err, "Error parsing -alpn argument\n");
			goto end;
			}
		SSL_CTX_set_alpn_protos(ctx, alpn, alpn_len);
		OPENSSL_free(alpn);
		}
#endif
#ifndef OPENSSL_NO_TLSEXT
		for (i = 0; i < serverinfo_types_count; i++)
			{
			SSL_CTX_add_client_custom_ext(ctx,
						      serverinfo_types[i],
						      NULL, NULL, NULL,
						      serverinfo_cli_parse_cb,
						      NULL);
			}
#endif

	if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
#if 0
	else
		SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
#endif

	SSL_CTX_set_verify(ctx,verify,verify_callback);

	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; */
		}

	ssl_ctx_add_crls(ctx, crls, crl_download);

	if (!set_cert_key_stuff(ctx,cert,key,chain,build_chain))
		goto end;

#ifndef OPENSSL_NO_TLSEXT
	if (servername != NULL)
		{
		tlsextcbp.biodebug = bio_err;
		SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
		SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
		}
#ifndef OPENSSL_NO_SRP
        if (srp_arg.srplogin)
		{
		if (!srp_lateuser && !SSL_CTX_set_srp_username(ctx, srp_arg.srplogin))
			{
			BIO_printf(bio_err,"Unable to set SRP username\n");
			goto end;
			}
		srp_arg.msg = c_msg;
		srp_arg.debug = c_debug ;
		SSL_CTX_set_srp_cb_arg(ctx,&srp_arg);
		SSL_CTX_set_srp_client_pwd_callback(ctx, ssl_give_srp_client_pwd_cb);
		SSL_CTX_set_srp_strength(ctx, srp_arg.strength);
		if (c_msg || c_debug || srp_arg.amp == 0)
			SSL_CTX_set_srp_verify_param_callback(ctx, ssl_srp_verify_param_cb);
		}

#endif
#endif

	con=SSL_new(ctx);
	if (sess_in)
		{
		SSL_SESSION *sess;
		BIO *stmp = BIO_new_file(sess_in, "r");
		if (!stmp)
			{
			BIO_printf(bio_err, "Can't open session file %s\n",
						sess_in);
			ERR_print_errors(bio_err);
			goto end;
			}
		sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
		BIO_free(stmp);
		if (!sess)
			{
			BIO_printf(bio_err, "Can't open session file %s\n",
						sess_in);
			ERR_print_errors(bio_err);
			goto end;
			}
		SSL_set_session(con, sess);
		SSL_SESSION_free(sess);
		}

	if (fallback_scsv)
		SSL_set_mode(con, SSL_MODE_SEND_FALLBACK_SCSV);

#ifndef OPENSSL_NO_TLSEXT
	if (servername != NULL)
		{
		if (!SSL_set_tlsext_host_name(con,servername))
			{
			BIO_printf(bio_err,"Unable to set TLS servername extension.\n");
			ERR_print_errors(bio_err);
			goto end;
			}
		}
#endif
#ifndef OPENSSL_NO_KRB5
	if (con  &&  (kctx = kssl_ctx_new()) != NULL)
                {
		SSL_set0_kssl_ctx(con, kctx);
                kssl_ctx_setstring(kctx, KSSL_SERVER, host);
		}
#endif	/* OPENSSL_NO_KRB5  */
/*	SSL_set_cipher_list(con,"RC4-MD5"); */
#if 0
#ifdef TLSEXT_TYPE_opaque_prf_input
	SSL_set_tlsext_opaque_prf_input(con, "Test client", 11);
#endif
#endif

re_start:
#ifdef NO_SYS_UN_H
	if (init_client(&s,host,port,socket_type) == 0)
#else
	if ((!unix_path && (init_client(&s,host,port,socket_type) == 0)) ||
			(unix_path && (init_client_unix(&s,unix_path) == 0)))
#endif
		{
		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) SSL_set_debug(con, 1);

	if (socket_type == SOCK_DGRAM)
		{

		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;
			}

		(void)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 (socket_mtu)
			{
			if(socket_mtu < DTLS_get_link_min_mtu(con))
				{
				BIO_printf(bio_err,"MTU too small. Must be at least %ld\n",
					DTLS_get_link_min_mtu(con));
				BIO_free(sbio);
				goto shut;
				}
			SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
			if(!DTLS_set_link_mtu(con, socket_mtu))
				{
				BIO_printf(bio_err, "Failed to set MTU\n");
				BIO_free(sbio);
				goto shut;
				}
			}
		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)
		{
		SSL_set_debug(con, 1);
		BIO_set_callback(sbio,bio_dump_callback);
		BIO_set_callback_arg(sbio,(char *)bio_c_out);
		}
	if (c_msg)
		{
#ifndef OPENSSL_NO_SSL_TRACE
		if (c_msg == 2)
			SSL_set_msg_callback(con, SSL_trace);
		else
#endif
			SSL_set_msg_callback(con, msg_cb);
		SSL_set_msg_callback_arg(con, bio_c_msg ? bio_c_msg : bio_c_out);
		}
#ifndef OPENSSL_NO_TLSEXT
	if (c_tlsextdebug)
		{
		SSL_set_tlsext_debug_callback(con, tlsext_cb);
		SSL_set_tlsext_debug_arg(con, bio_c_out);
		}
	if (c_status_req)
		{
		SSL_set_tlsext_status_type(con, TLSEXT_STATUSTYPE_ocsp);
		SSL_CTX_set_tlsext_status_cb(ctx, ocsp_resp_cb);
		SSL_CTX_set_tlsext_status_arg(ctx, bio_c_out);
#if 0
{
STACK_OF(OCSP_RESPID) *ids = sk_OCSP_RESPID_new_null();
OCSP_RESPID *id = OCSP_RESPID_new();
id->value.byKey = ASN1_OCTET_STRING_new();
id->type = V_OCSP_RESPID_KEY;
ASN1_STRING_set(id->value.byKey, "Hello World", -1);
sk_OCSP_RESPID_push(ids, id);
SSL_set_tlsext_status_ids(con, ids);
}
#endif
		}
#endif
#ifndef OPENSSL_NO_JPAKE
	if (jpake_secret)
		jpake_client_auth(bio_c_out, sbio, jpake_secret);
#endif

	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 */
	/* We do have to handle multi-line responses which may come
 	   in a single packet or not. We therefore have to use
	   BIO_gets() which does need a buffering BIO. So during
	   the initial chitchat we do push a buffering BIO into the
	   chain that is removed again later on to not disturb the
	   rest of the s_client operation. */
	if (starttls_proto == PROTO_SMTP)
		{
		int foundit=0;
		BIO *fbio = BIO_new(BIO_f_buffer());
		BIO_push(fbio, sbio);
		/* wait for multi-line response to end from SMTP */
		do
			{
			mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
			}
		while (mbuf_len>3 && mbuf[3]=='-');
		/* STARTTLS command requires EHLO... */
		BIO_printf(fbio,"EHLO openssl.client.net\r\n");
		(void)BIO_flush(fbio);
		/* wait for multi-line response to end EHLO SMTP response */
		do
			{
			mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
			if (strstr(mbuf,"STARTTLS"))
				foundit=1;
			}
		while (mbuf_len>3 && mbuf[3]=='-');
		(void)BIO_flush(fbio);
		BIO_pop(fbio);
		BIO_free(fbio);
		if (!foundit)
			BIO_printf(bio_err,
				   "didn't found starttls in server response,"
				   " try anyway...\n");
		BIO_printf(sbio,"STARTTLS\r\n");
		BIO_read(sbio,sbuf,BUFSIZZ);
		}
	else if (starttls_proto == PROTO_POP3)
		{
		BIO_read(sbio,mbuf,BUFSIZZ);
		BIO_printf(sbio,"STLS\r\n");
		BIO_read(sbio,sbuf,BUFSIZZ);
		}
	else if (starttls_proto == PROTO_IMAP)
		{
		int foundit=0;
		BIO *fbio = BIO_new(BIO_f_buffer());
		BIO_push(fbio, sbio);
		BIO_gets(fbio,mbuf,BUFSIZZ);
		/* STARTTLS command requires CAPABILITY... */
		BIO_printf(fbio,". CAPABILITY\r\n");
		(void)BIO_flush(fbio);
		/* wait for multi-line CAPABILITY response */
		do
			{
			mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
			if (strstr(mbuf,"STARTTLS"))
				foundit=1;
			}
		while (mbuf_len>3 && mbuf[0]!='.');
		(void)BIO_flush(fbio);
		BIO_pop(fbio);
		BIO_free(fbio);
		if (!foundit)
			BIO_printf(bio_err,
				   "didn't found STARTTLS in server response,"
				   " try anyway...\n");
		BIO_printf(sbio,". STARTTLS\r\n");
		BIO_read(sbio,sbuf,BUFSIZZ);
		}
	else if (starttls_proto == PROTO_FTP)
		{
		BIO *fbio = BIO_new(BIO_f_buffer());
		BIO_push(fbio, sbio);
		/* wait for multi-line response to end from FTP */
		do
			{
			mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
			}
		while (mbuf_len>3 && mbuf[3]=='-');
		(void)BIO_flush(fbio);
		BIO_pop(fbio);
		BIO_free(fbio);
		BIO_printf(sbio,"AUTH TLS\r\n");
		BIO_read(sbio,sbuf,BUFSIZZ);
		}
	if (starttls_proto == PROTO_XMPP)
		{
		int seen = 0;
		BIO_printf(sbio,"<stream:stream "
		    "xmlns:stream='http://etherx.jabber.org/streams' "
		    "xmlns='jabber:client' to='%s' version='1.0'>", xmpphost ?
			   xmpphost : host);
		seen = BIO_read(sbio,mbuf,BUFSIZZ);
		mbuf[seen] = 0;
		while (!strstr(mbuf, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'") &&
				!strstr(mbuf, "<starttls xmlns=\"urn:ietf:params:xml:ns:xmpp-tls\""))
			{
			seen = BIO_read(sbio,mbuf,BUFSIZZ);

			if (seen <= 0)
				goto shut;

			mbuf[seen] = 0;
			}
		BIO_printf(sbio, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
		seen = BIO_read(sbio,sbuf,BUFSIZZ);
		sbuf[seen] = 0;
		if (!strstr(sbuf, "<proceed"))
			goto shut;
		mbuf[0] = 0;
		}

	for (;;)
		{
		FD_ZERO(&readfds);
		FD_ZERO(&writefds);

		if ((SSL_version(con) == DTLS1_VERSION) &&
			DTLSv1_get_timeout(con, &timeout))
			timeoutp = &timeout;
		else
			timeoutp = NULL;

		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;
#if 0 /* This test doesn't really work as intended (needs to be fixed) */
#ifndef OPENSSL_NO_TLSEXT
				if (servername != NULL && !SSL_session_reused(con))
					{
					BIO_printf(bio_c_out,"Server did %sacknowledge servername extension.\n",tlsextcbp.ack?"":"not ");
					}
#endif
#endif
				if (sess_out)
					{
					BIO *stmp = BIO_new_file(sess_out, "w");
					if (stmp)
						{
						PEM_write_bio_SSL_SESSION(stmp, SSL_get_session(con));
						BIO_free(stmp);
						}
					else 
						BIO_printf(bio_err, "Error writing session file %s\n", sess_out);
					}
				if (c_brief)
					{
					BIO_puts(bio_err,
						"CONNECTION ESTABLISHED\n");
					print_ssl_summary(bio_err, con);
					}

				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 = PROTO_OFF;
					}

				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)  openssl_fdset(fileno(stdin),&readfds);
				if (write_tty) openssl_fdset(fileno(stdout),&writefds);
				}
			if (read_ssl)
				openssl_fdset(SSL_get_fd(con),&readfds);
			if (write_ssl)
				openssl_fdset(SSL_get_fd(con),&writefds);
#else
			if(!tty_on || !write_tty) {
				if (read_ssl)
					openssl_fdset(SSL_get_fd(con),&readfds);
				if (write_ssl)
					openssl_fdset(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,timeoutp);
			}
#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,timeoutp);
			}
#else
			i=select(width,(void *)&readfds,(void *)&writefds,
				 NULL,timeoutp);
#endif
			if ( i < 0)
				{
				BIO_printf(bio_err,"bad select %d\n",
				get_last_socket_error());
				goto shut;
				/* goto end; */
				}
			}

		if ((SSL_version(con) == DTLS1_VERSION) && DTLSv1_handle_timeout(con) > 0)
			{
			BIO_printf(bio_err,"TIMEOUT occurred\n");
			}

		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");
					ret = 0;
					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/BeOS 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=raw_write_stdout(&(sbuf[sbuf_off]),sbuf_len);

			if (i <= 0)
				{
				BIO_printf(bio_c_out,"DONE\n");
				ret = 0;
				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:
				ret=get_last_socket_error();
				if (c_brief)
					BIO_puts(bio_err, "CONNECTION CLOSED BY SERVER\n");
				else
					BIO_printf(bio_err,"read:errno=%d\n",ret);
				goto shut;
			case SSL_ERROR_ZERO_RETURN:
				BIO_printf(bio_c_out,"closed\n");
				ret=0;
				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=raw_read_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=raw_read_stdin(cbuf,BUFSIZZ);

			if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
				{
				BIO_printf(bio_err,"DONE\n");
				ret=0;
				goto shut;
				}

			if ((!c_ign_eof) && (cbuf[0] == 'R'))
				{
				BIO_printf(bio_err,"RENEGOTIATING\n");
				SSL_renegotiate(con);
				cbuf_len=0;
				}
#ifndef OPENSSL_NO_HEARTBEATS
			else if ((!c_ign_eof) && (cbuf[0] == 'B'))
 				{
				BIO_printf(bio_err,"HEARTBEATING\n");
				SSL_heartbeat(con);
				cbuf_len=0;
				}
#endif
			else
				{
				cbuf_len=i;
				cbuf_off=0;
#ifdef CHARSET_EBCDIC
				ebcdic2ascii(cbuf, cbuf, i);
#endif
				}

			write_ssl=1;
			read_tty=0;
			}
		}

	ret=0;
shut:
	if (in_init)
		print_stuff(bio_c_out,con,full_log);
	SSL_shutdown(con);
	SHUTDOWN(SSL_get_fd(con));
end:
	if (con != NULL)
		{
		if (prexit != 0)
			print_stuff(bio_c_out,con,1);
		SSL_free(con);
		}
#if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
	if (next_proto.data)
		OPENSSL_free(next_proto.data);
#endif
	if (ctx != NULL) SSL_CTX_free(ctx);
	if (cert)
		X509_free(cert);
	if (crls)
		sk_X509_CRL_pop_free(crls, X509_CRL_free);
	if (key)
		EVP_PKEY_free(key);
	if (chain)
		sk_X509_pop_free(chain, X509_free);
	if (pass)
		OPENSSL_free(pass);
	if (vpm)
		X509_VERIFY_PARAM_free(vpm);
	ssl_excert_free(exc);
	if (ssl_args)
		sk_OPENSSL_STRING_free(ssl_args);
	if (cctx)
		SSL_CONF_CTX_free(cctx);
#ifndef OPENSSL_NO_JPAKE
	if (jpake_secret && psk_key)
		OPENSSL_free(psk_key);
#endif
	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;
		}
	if (bio_c_msg != NULL)
		{
		BIO_free(bio_c_msg);
		bio_c_msg=NULL;
		}
	apps_shutdown();
	OPENSSL_EXIT(ret);
	}


static void print_stuff(BIO *bio, SSL *s, int full)
	{
	X509 *peer=NULL;
	char buf[BUFSIZ];
	STACK_OF(X509) *sk;
	STACK_OF(X509_NAME) *sk2;
	const SSL_CIPHER *c;
	X509_NAME *xn;
	int i;
#ifndef OPENSSL_NO_COMP
	const COMP_METHOD *comp, *expansion;
#endif
	unsigned char *exportedkeymat;

	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");

			/* Redundant if we showed the whole chain */
			if (!(c_showcerts && got_a_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");
			}

		ssl_print_sigalgs(bio, s);
		ssl_print_tmp_key(bio, s);

		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,(SSL_cache_hit(s)?"---\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);
	}
	BIO_printf(bio, "Secure Renegotiation IS%s supported\n",
			SSL_get_secure_renegotiation_support(s) ? "" : " NOT");
#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
 
#ifdef SSL_DEBUG
	{
	/* Print out local port of connection: useful for debugging */
	int sock;
	struct sockaddr_in ladd;
	socklen_t ladd_size = sizeof(ladd);
	sock = SSL_get_fd(s);
	getsockname(sock, (struct sockaddr *)&ladd, &ladd_size);
	BIO_printf(bio_c_out, "LOCAL PORT is %u\n", ntohs(ladd.sin_port));
	}
#endif

#if !defined(OPENSSL_NO_TLSEXT)
# if !defined(OPENSSL_NO_NEXTPROTONEG)
	if (next_proto.status != -1) {
		const unsigned char *proto;
		unsigned int proto_len;
		SSL_get0_next_proto_negotiated(s, &proto, &proto_len);
		BIO_printf(bio, "Next protocol: (%d) ", next_proto.status);
		BIO_write(bio, proto, proto_len);
		BIO_write(bio, "\n", 1);
	}
# endif
	{
		const unsigned char *proto;
		unsigned int proto_len;
		SSL_get0_alpn_selected(s, &proto, &proto_len);
		if (proto_len > 0)
			{
			BIO_printf(bio, "ALPN protocol: ");
			BIO_write(bio, proto, proto_len);
			BIO_write(bio, "\n", 1);
			}
		else
			BIO_printf(bio, "No ALPN negotiated\n");
	}
#endif

#ifndef OPENSSL_NO_SRTP
 	{
 	SRTP_PROTECTION_PROFILE *srtp_profile=SSL_get_selected_srtp_profile(s);
 
	if(srtp_profile)
		BIO_printf(bio,"SRTP Extension negotiated, profile=%s\n",
			   srtp_profile->name);
	}
#endif
 
	SSL_SESSION_print(bio,SSL_get_session(s));
	if (keymatexportlabel != NULL)
		{
		BIO_printf(bio, "Keying material exporter:\n");
		BIO_printf(bio, "    Label: '%s'\n", keymatexportlabel);
		BIO_printf(bio, "    Length: %i bytes\n", keymatexportlen);
		exportedkeymat = OPENSSL_malloc(keymatexportlen);
		if (exportedkeymat != NULL)
			{
			if (!SSL_export_keying_material(s, exportedkeymat,
						        keymatexportlen,
						        keymatexportlabel,
						        strlen(keymatexportlabel),
						        NULL, 0, 0))
				{
				BIO_printf(bio, "    Error\n");
				}
			else
				{
				BIO_printf(bio, "    Keying material: ");
				for (i=0; i<keymatexportlen; i++)
					BIO_printf(bio, "%02X",
						   exportedkeymat[i]);
				BIO_printf(bio, "\n");
				}
			OPENSSL_free(exportedkeymat);
			}
		}
	BIO_printf(bio,"---\n");
	if (peer != NULL)
		X509_free(peer);
	/* flush, or debugging output gets mixed with http response */
	(void)BIO_flush(bio);
	}

#ifndef OPENSSL_NO_TLSEXT

static int ocsp_resp_cb(SSL *s, void *arg)
	{
	const unsigned char *p;
	int len;
	OCSP_RESPONSE *rsp;
	len = SSL_get_tlsext_status_ocsp_resp(s, &p);
	BIO_puts(arg, "OCSP response: ");
	if (!p)
		{
		BIO_puts(arg, "no response sent\n");
		return 1;
		}
	rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
	if (!rsp)
		{
		BIO_puts(arg, "response parse error\n");
		BIO_dump_indent(arg, (char *)p, len, 4);
		return 0;
		}
	BIO_puts(arg, "\n======================================\n");
	OCSP_RESPONSE_print(arg, rsp, 0);
	BIO_puts(arg, "======================================\n");
	OCSP_RESPONSE_free(rsp);
	return 1;
	}

#endif