Fix source where indent will not be able to cope

[thirdparty/openssl.git] / apps / s_client.c

/* 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");
                        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");
                        }

                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