/* apps/s_server.c */

 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)

  * All rights reserved.

  *

  * This package is an SSL implementation written

  * by Eric Young (eay@cryptsoft.com).

  * The implementation was written so as to conform with Netscapes SSL.

  * 

  * This library is free for commercial and non-commercial use as long as

  * the following conditions are aheared to.  The following conditions

  * apply to all code found in this distribution, be it the RC4, RSA,

  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation

  * included with this distribution is covered by the same copyright terms

  * except that the holder is Tim Hudson (tjh@cryptsoft.com).

  * 

  * Copyright remains Eric Young's, and as such any Copyright notices in

  * the code are not to be removed.

  * If this package is used in a product, Eric Young should be given attribution

  * as the author of the parts of the library used.

  * This can be in the form of a textual message at program startup or

  * in documentation (online or textual) provided with the package.

  * 

  * Redistribution and use in source and binary forms, with or without

  * modification, are permitted provided that the following conditions

  * are met:

  * 1. Redistributions of source code must retain the copyright

  *    notice, this list of conditions and the following disclaimer.

  * 2. Redistributions in binary form must reproduce the above copyright

  *    notice, this list of conditions and the following disclaimer in the

  *    documentation and/or other materials provided with the distribution.

  * 3. All advertising materials mentioning features or use of this software

  *    must display the following acknowledgement:

  *    "This product includes cryptographic software written by

  *     Eric Young (eay@cryptsoft.com)"

  *    The word 'cryptographic' can be left out if the rouines from the library

  *    being used are not cryptographic related :-).

  * 4. If you include any Windows specific code (or a derivative thereof) from 

  *    the apps directory (application code) you must include an acknowledgement:

  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"

  * 

  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND

  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

  * SUCH DAMAGE.

  * 

  * The licence and distribution terms for any publically available version or

  * derivative of this code cannot be changed.  i.e. this code cannot simply be

  * copied and put under another distribution licence

  * [including the GNU Public Licence.]

  */

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

  * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.

  *

  * Redistribution and use in source and binary forms, with or without

  * modification, are permitted provided that the following conditions

  * are met:

  *

  * 1. Redistributions of source code must retain the above copyright

  *    notice, this list of conditions and the following disclaimer. 

  *

  * 2. Redistributions in binary form must reproduce the above copyright

  *    notice, this list of conditions and the following disclaimer in

  *    the documentation and/or other materials provided with the

  *    distribution.

  *

  * 3. All advertising materials mentioning features or use of this

  *    software must display the following acknowledgment:

  *    "This product includes software developed by the OpenSSL Project

  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"

  *

  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to

  *    endorse or promote products derived from this software without

  *    prior written permission. For written permission, please contact

  *    openssl-core@openssl.org.

  *

  * 5. Products derived from this software may not be called "OpenSSL"

  *    nor may "OpenSSL" appear in their names without prior written

  *    permission of the OpenSSL Project.

  *

  * 6. Redistributions of any form whatsoever must retain the following

  *    acknowledgment:

  *    "This product includes software developed by the OpenSSL Project

  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"

  *

  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY

  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR

  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

  * OF THE POSSIBILITY OF SUCH DAMAGE.

  * ====================================================================

  *

  * This product includes cryptographic software written by Eric Young

  * (eay@cryptsoft.com).  This product includes software written by Tim

  * Hudson (tjh@cryptsoft.com).

  *

  */

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

  * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.

  * ECC cipher suite support in OpenSSL originally developed by 

  * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.

  */

 /* Until the key-gen callbacks are modified to use newer prototypes, we allow

  * deprecated functions for openssl-internal code */

 #ifdef OPENSSL_NO_DEPRECATED

 #undef OPENSSL_NO_DEPRECATED

 #endif

 #include <assert.h>

 #include <stdio.h>

 #include <stdlib.h>

 #include <string.h>

 #include <sys/select.h>

 #include <sys/stat.h>

 #include <openssl/e_os2.h>

 #ifdef OPENSSL_NO_STDIO

 #define APPS_WIN16

 #endif

 #if !defined(OPENSSL_SYS_NETWARE)  /* conflicts with winsock2 stuff on netware */

 #include <sys/types.h>

 #endif

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

    recursive header file inclusion, resulting in the compiler complaining

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

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

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

 #define __U_INT

 typedef unsigned int u_int;

 #endif

 #include <openssl/lhash.h>

 #include <openssl/bn.h>

 #define USE_SOCKETS

 #include "apps.h"

 #include <openssl/err.h>

 #include <openssl/pem.h>

 #include <openssl/x509.h>

 #include <openssl/ssl.h>

 #include <openssl/rand.h>

 #ifndef OPENSSL_NO_DH

 #include <openssl/dh.h>

 #endif

 #ifndef OPENSSL_NO_RSA

 #include <openssl/rsa.h>

 #endif

 #include "s_apps.h"

 #include "timeouts.h"

 #ifdef OPENSSL_SYS_WINCE

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

 #ifdef fileno

 #undef fileno

 #endif

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

 #endif

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

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

 #undef FIONBIO

 #endif

 #ifndef OPENSSL_NO_RSA

 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength);

 #endif

 static int sv_body(char *hostname, int s, unsigned char *context);

 static int www_body(char *hostname, int s, unsigned char *context);

 static void close_accept_socket(void );

 static void sv_usage(void);

 static int init_ssl_connection(SSL *s);

 static void print_stats(BIO *bp,SSL_CTX *ctx);

 static int generate_session_id(const SSL *ssl, unsigned char *id,

 				unsigned int *id_len);

 #ifndef OPENSSL_NO_DH

 static DH *load_dh_param(const char *dhfile);

 static DH *get_dh512(void);

 #endif

 #ifdef MONOLITH

 static void s_server_init(void);

 #endif

 #ifndef S_ISDIR

 # if defined(_S_IFMT) && defined(_S_IFDIR)

 #  define S_ISDIR(a)	(((a) & _S_IFMT) == _S_IFDIR)

 # else

 #  define S_ISDIR(a)	(((a) & S_IFMT) == S_IFDIR)

 # endif

 #endif

 #ifndef OPENSSL_NO_DH

 static unsigned char dh512_p[]={

 	0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,

 	0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,

 	0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,

 	0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,

 	0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,

 	0x47,0x74,0xE8,0x33,

 	};

 static unsigned char dh512_g[]={

 	0x02,

 	};

 static DH *get_dh512(void)

 	{

 	DH *dh=NULL;

 	if ((dh=DH_new()) == NULL) return(NULL);

 	dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);

 	dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);

 	if ((dh->p == NULL) || (dh->g == NULL))

 		return(NULL);

 	return(dh);

 	}

 #endif

 /* static int load_CA(SSL_CTX *ctx, char *file);*/

 #undef BUFSIZZ

 #define BUFSIZZ	16*1024

 static int bufsize=BUFSIZZ;

 static int accept_socket= -1;

 #define TEST_CERT	"server.pem"

 #undef PROG

 #define PROG		s_server_main

 extern int verify_depth;

 static char *cipher=NULL;

 static int s_server_verify=SSL_VERIFY_NONE;

 static int s_server_session_id_context = 1; /* anything will do */

 static const char *s_cert_file=TEST_CERT,*s_key_file=NULL;

 static char *s_dcert_file=NULL,*s_dkey_file=NULL;

 #ifdef FIONBIO

 static int s_nbio=0;

 #endif

 static int s_nbio_test=0;

 int s_crlf=0;

 static SSL_CTX *ctx=NULL;

 static int www=0;

 static BIO *bio_s_out=NULL;

 static int s_debug=0;

 static int s_msg=0;

 static int s_quiet=0;

 static int hack=0;

 #ifndef OPENSSL_NO_ENGINE

 static char *engine_id=NULL;

 #endif

 static const char *session_id_prefix=NULL;

 static int enable_timeouts = 0;

 #ifdef mtu

 #undef mtu

 #endif

 static long mtu;

 static int cert_chain = 0;

 #ifdef MONOLITH

 static void s_server_init(void)

 	{

 	accept_socket=-1;

 	cipher=NULL;

 	s_server_verify=SSL_VERIFY_NONE;

 	s_dcert_file=NULL;

 	s_dkey_file=NULL;

 	s_cert_file=TEST_CERT;

 	s_key_file=NULL;

 #ifdef FIONBIO

 	s_nbio=0;

 #endif

 	s_nbio_test=0;

 	ctx=NULL;

 	www=0;

 	bio_s_out=NULL;

 	s_debug=0;

 	s_msg=0;

 	s_quiet=0;

 	hack=0;

 #ifndef OPENSSL_NO_ENGINE

 	engine_id=NULL;

 #endif

 	}

 #endif

 static void sv_usage(void)

 	{

 	BIO_printf(bio_err,"usage: s_server [args ...]\n");

 	BIO_printf(bio_err,"\n");

 	BIO_printf(bio_err," -accept arg   - port to accept on (default is %d)\n",PORT);

 	BIO_printf(bio_err," -context arg  - set session ID context\n");

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

 	BIO_printf(bio_err," -Verify arg   - turn on peer certificate verification, must have a cert.\n");

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

 	BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);

 	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 (default is %s)\n",TEST_CERT);

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

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

 	BIO_printf(bio_err," -dcert arg    - second certificate file to use (usually for DSA)\n");

 	BIO_printf(bio_err," -dcertform x  - second certificate format (PEM or DER) PEM default\n");

 	BIO_printf(bio_err," -dkey arg     - second private key file to use (usually for DSA)\n");

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

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

 	BIO_printf(bio_err," -dhparam arg  - DH parameter file to use, in cert file if not specified\n");

 	BIO_printf(bio_err,"                 or a default set of parameters is used\n");

 #ifndef OPENSSL_NO_ECDH

 	BIO_printf(bio_err," -named_curve arg  - Elliptic curve name to use for ephemeral ECDH keys.\n" \

 	                   "                 Use \"openssl ecparam -list_curves\" for all names\n" \

 	                   "                 (default is sect163r2).\n");

 #endif

 #ifdef FIONBIO

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

 #endif

 	BIO_printf(bio_err," -nbio_test    - test with the non-blocking test bio\n");

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

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

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

 	BIO_printf(bio_err," -state        - Print the SSL states\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," -nocert       - Don't use any certificates (Anon-DH)\n");

 	BIO_printf(bio_err," -cipher arg   - play with 'openssl ciphers' to see what goes here\n");

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

 	BIO_printf(bio_err," -quiet        - No server output\n");

 	BIO_printf(bio_err," -no_tmp_rsa   - Do not generate a tmp RSA key\n");

 	BIO_printf(bio_err," -ssl2         - Just talk SSLv2\n");

 	BIO_printf(bio_err," -ssl3         - Just talk SSLv3\n");

 	BIO_printf(bio_err," -tls1         - Just talk TLSv1\n");

 	BIO_printf(bio_err," -dtls1        - Just talk DTLSv1\n");

 	BIO_printf(bio_err," -timeout      - Enable timeouts\n");

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

 	BIO_printf(bio_err," -chain        - Read a certificate chain\n");

 	BIO_printf(bio_err," -no_ssl2      - Just disable SSLv2\n");

 	BIO_printf(bio_err," -no_ssl3      - Just disable SSLv3\n");

 	BIO_printf(bio_err," -no_tls1      - Just disable TLSv1\n");

 #ifndef OPENSSL_NO_DH

 	BIO_printf(bio_err," -no_dhe       - Disable ephemeral DH\n");

 #endif

 #ifndef OPENSSL_NO_ECDH

 	BIO_printf(bio_err," -no_ecdhe     - Disable ephemeral ECDH\n");

 #endif

 	BIO_printf(bio_err," -bugs         - Turn on SSL bug compatibility\n");

 	BIO_printf(bio_err," -www          - Respond to a 'GET /' with a status page\n");

 	BIO_printf(bio_err," -WWW          - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");

 	BIO_printf(bio_err," -HTTP         - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");

         BIO_printf(bio_err,"                 with the assumption it contains a complete HTTP response.\n");

 #ifndef OPENSSL_NO_ENGINE

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

 #endif

 	BIO_printf(bio_err," -id_prefix arg - Generate SSL/TLS session IDs prefixed by 'arg'\n");

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

 	}

 static int local_argc=0;

 static char **local_argv;

 #ifdef CHARSET_EBCDIC

 static int ebcdic_new(BIO *bi);

 static int ebcdic_free(BIO *a);

 static int ebcdic_read(BIO *b, char *out, int outl);

 static int ebcdic_write(BIO *b, const char *in, int inl);

 static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr);

 static int ebcdic_gets(BIO *bp, char *buf, int size);

 static int ebcdic_puts(BIO *bp, const char *str);

 #define BIO_TYPE_EBCDIC_FILTER	(18|0x0200)

 static BIO_METHOD methods_ebcdic=

 	{

 	BIO_TYPE_EBCDIC_FILTER,

 	"EBCDIC/ASCII filter",

 	ebcdic_write,

 	ebcdic_read,

 	ebcdic_puts,

 	ebcdic_gets,

 	ebcdic_ctrl,

 	ebcdic_new,

 	ebcdic_free,

 	};

 typedef struct

 {

 	size_t	alloced;

 	char	buff[1];

 } EBCDIC_OUTBUFF;

 BIO_METHOD *BIO_f_ebcdic_filter()

 {

 	return(&methods_ebcdic);

 }

 static int ebcdic_new(BIO *bi)

 {

 	EBCDIC_OUTBUFF *wbuf;

 	wbuf = (EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + 1024);

 	wbuf->alloced = 1024;

 	wbuf->buff[0] = '\0';

 	bi->ptr=(char *)wbuf;

 	bi->init=1;

 	bi->flags=0;

 	return(1);

 }

 static int ebcdic_free(BIO *a)

 {

 	if (a == NULL) return(0);

 	if (a->ptr != NULL)

 		OPENSSL_free(a->ptr);

 	a->ptr=NULL;

 	a->init=0;

 	a->flags=0;

 	return(1);

 }

 static int ebcdic_read(BIO *b, char *out, int outl)

 {

 	int ret=0;

 	if (out == NULL || outl == 0) return(0);

 	if (b->next_bio == NULL) return(0);

 	ret=BIO_read(b->next_bio,out,outl);

 	if (ret > 0)

 		ascii2ebcdic(out,out,ret);

 	return(ret);

 }

 static int ebcdic_write(BIO *b, const char *in, int inl)

 {

 	EBCDIC_OUTBUFF *wbuf;

 	int ret=0;

 	int num;

 	unsigned char n;

 	if ((in == NULL) || (inl <= 0)) return(0);

 	if (b->next_bio == NULL) return(0);

 	wbuf=(EBCDIC_OUTBUFF *)b->ptr;

 	if (inl > (num = wbuf->alloced))

 	{

 		num = num + num;  /* double the size */

 		if (num < inl)

 			num = inl;

 		OPENSSL_free(wbuf);

 		wbuf=(EBCDIC_OUTBUFF *)OPENSSL_malloc(sizeof(EBCDIC_OUTBUFF) + num);

 		wbuf->alloced = num;

 		wbuf->buff[0] = '\0';

 		b->ptr=(char *)wbuf;

 	}

 	ebcdic2ascii(wbuf->buff, in, inl);

 	ret=BIO_write(b->next_bio, wbuf->buff, inl);

 	return(ret);

 }

 static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr)

 {

 	long ret;

 	if (b->next_bio == NULL) return(0);

 	switch (cmd)

 	{

 	case BIO_CTRL_DUP:

 		ret=0L;

 		break;

 	default:

 		ret=BIO_ctrl(b->next_bio,cmd,num,ptr);

 		break;

 	}

 	return(ret);

 }

 static int ebcdic_gets(BIO *bp, char *buf, int size)

 {

 	int i, ret=0;

 	if (bp->next_bio == NULL) return(0);

 /*	return(BIO_gets(bp->next_bio,buf,size));*/

 	for (i=0; i<size-1; ++i)

 	{

 		ret = ebcdic_read(bp,&buf[i],1);

 		if (ret <= 0)

 			break;

 		else if (buf[i] == '\n')

 		{

 			++i;

 			break;

 		}

 	}

 	if (i < size)

 		buf[i] = '\0';

 	return (ret < 0 && i == 0) ? ret : i;

 }

 static int ebcdic_puts(BIO *bp, const char *str)

 {

 	if (bp->next_bio == NULL) return(0);

 	return ebcdic_write(bp, str, strlen(str));

 }

 #endif

 int MAIN(int, char **);

 int MAIN(int argc, char *argv[])

 	{

 	X509_STORE *store = NULL;

 	int vflags = 0;

 	short port=PORT;

 	char *CApath=NULL,*CAfile=NULL;

 	unsigned char *context = NULL;

 	char *dhfile = NULL;

 #ifndef OPENSSL_NO_ECDH

 	char *named_curve = NULL;

 #endif

 	int badop=0,bugs=0;

 	int ret=1;

 	int off=0;

 	int no_tmp_rsa=0,no_dhe=0,no_ecdhe=0,nocert=0;

 	int state=0;

 	SSL_METHOD *meth=NULL;

         int socket_type=SOCK_STREAM;

 #ifndef OPENSSL_NO_ENGINE

 	ENGINE *e=NULL;

 #endif

 	char *inrand=NULL;

 	int s_cert_format = FORMAT_PEM, s_key_format = FORMAT_PEM;

 	char *passarg = NULL, *pass = NULL;

 	char *dpassarg = NULL, *dpass = NULL;

 	int s_dcert_format = FORMAT_PEM, s_dkey_format = FORMAT_PEM;

 	X509 *s_cert = NULL, *s_dcert = NULL;

 	EVP_PKEY *s_key = NULL, *s_dkey = NULL;

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

 	meth=SSLv23_server_method();

 #elif !defined(OPENSSL_NO_SSL3)

 	meth=SSLv3_server_method();

 #elif !defined(OPENSSL_NO_SSL2)

 	meth=SSLv2_server_method();

 #endif

 	local_argc=argc;

 	local_argv=argv;

 	apps_startup();

 #ifdef MONOLITH

 	s_server_init();

 #endif

 	if (bio_err == NULL)

 		bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);

 	if (!load_config(bio_err, NULL))

 		goto end;

 	verify_depth=0;

 #ifdef FIONBIO

 	s_nbio=0;

 #endif

 	s_nbio_test=0;

 	argc--;

 	argv++;

 	while (argc >= 1)

 		{

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

 			 (strcmp(*argv,"-accept") == 0))

 			{

 			if (--argc < 1) goto bad;

 			if (!extract_port(*(++argv),&port))

 				goto bad;

 			}

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

 			{

 			s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;

 			if (--argc < 1) goto bad;

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

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

 			}

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

 			{

 			s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT|

 				SSL_VERIFY_CLIENT_ONCE;

 			if (--argc < 1) goto bad;

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

 			BIO_printf(bio_err,"verify depth is %d, must return a certificate\n",verify_depth);

 			}

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

 			{

 			if (--argc < 1) goto bad;

 			context= (unsigned char *)*(++argv);

 			}

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

 			{

 			if (--argc < 1) goto bad;

 			s_cert_file= *(++argv);

 			}

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

 			{

 			if (--argc < 1) goto bad;

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

 			}

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

 			{

 			if (--argc < 1) goto bad;

 			s_key_file= *(++argv);

 			}

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

 			{

 			if (--argc < 1) goto bad;

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

 			}

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

 			{

 			if (--argc < 1) goto bad;

 			passarg = *(++argv);

 			}

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

 			{

 			if (--argc < 1) goto bad;

 			dhfile = *(++argv);

 			}

 #ifndef OPENSSL_NO_ECDH		

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

 			{

 			if (--argc < 1) goto bad;

 			named_curve = *(++argv);

 			}

 #endif

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

 			{

 			if (--argc < 1) goto bad;

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

 			}

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

 			{

 			if (--argc < 1) goto bad;

 			s_dcert_file= *(++argv);

 			}

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

 			{

 			if (--argc < 1) goto bad;

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

 			}

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

 			{

 			if (--argc < 1) goto bad;

 			dpassarg = *(++argv);

 			}

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

 			{

 			if (--argc < 1) goto bad;

 			s_dkey_file= *(++argv);

 			}

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

 			{

 			nocert=1;

 			}

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

 			{

 			if (--argc < 1) goto bad;

 			CApath= *(++argv);

 			}

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

 			{

 			vflags |= X509_V_FLAG_CRL_CHECK;

 			}

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

 			{

 			vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL;

 			}

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

 			{ off|=SSL_OP_CIPHER_SERVER_PREFERENCE; }

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

 			{

 			if (--argc < 1) goto bad;

 			cipher= *(++argv);

 			}

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

 			{

 			if (--argc < 1) goto bad;

 			CAfile= *(++argv);

 			}

 #ifdef FIONBIO	

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

 			{ s_nbio=1; }

 #endif

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

 			{

 #ifdef FIONBIO	

 			s_nbio=1;

 #endif

 			s_nbio_test=1;

 			}

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

 			{ s_debug=1; }

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

 			{ s_msg=1; }

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

 			{ hack=1; }

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

 			{ state=1; }

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

 			{ s_crlf=1; }

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

 			{ s_quiet=1; }

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

 			{ bugs=1; }

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

 			{ no_tmp_rsa=1; }

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

 			{ no_dhe=1; }

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

 			{ no_ecdhe=1; }

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

 			{ www=1; }

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

 			{ www=2; }

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

 			{ www=3; }

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

 			{ off|=SSL_OP_NO_SSLv2; }

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

 			{ off|=SSL_OP_NO_SSLv3; }

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

 			{ off|=SSL_OP_NO_TLSv1; }

 #ifndef OPENSSL_NO_SSL2

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

 			{ meth=SSLv2_server_method(); }

 #endif

 #ifndef OPENSSL_NO_SSL3

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

 			{ meth=SSLv3_server_method(); }

 #endif

 #ifndef OPENSSL_NO_TLS1

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

 			{ meth=TLSv1_server_method(); }

 #endif

 #ifndef OPENSSL_NO_DTLS1

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

 			{ 

 			meth=DTLSv1_server_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;

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

 			}

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

 			cert_chain = 1;

 #endif

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

 			{

 			if (--argc < 1) goto bad;

 			session_id_prefix = *(++argv);

 			}

 #ifndef OPENSSL_NO_ENGINE

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

 			{

 			if (--argc < 1) goto bad;

 			engine_id= *(++argv);

 			}

 #endif

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

 			{

 			if (--argc < 1) goto bad;

 			inrand= *(++argv);

 			}

 		else

 			{

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

 			badop=1;

 			break;

 			}

 		argc--;

 		argv++;

 		}

 	if (badop)

 		{

 bad:

 		sv_usage();

 		goto end;

 		}

 	SSL_load_error_strings();

 	OpenSSL_add_ssl_algorithms();

 #ifndef OPENSSL_NO_ENGINE

         e = setup_engine(bio_err, engine_id, 1);

 #endif

 	if (!app_passwd(bio_err, passarg, dpassarg, &pass, &dpass))

 		{

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

 		goto end;

 		}

 	if (s_key_file == NULL)

 		s_key_file = s_cert_file;

 	if (nocert == 0)

 		{

 		s_key = load_key(bio_err, s_key_file, s_key_format, 0, pass, e,

 		       "server certificate private key file");

 		if (!s_key)

 			{

 			ERR_print_errors(bio_err);

 			goto end;

 			}

 		s_cert = load_cert(bio_err,s_cert_file,s_cert_format,

 			NULL, e, "server certificate file");

 		if (!s_cert)

 			{

 			ERR_print_errors(bio_err);

 			goto end;

 			}

 		}

 	if (s_dcert_file)

 		{

 		if (s_dkey_file == NULL)

 			s_dkey_file = s_dcert_file;

 		s_dkey = load_key(bio_err, s_dkey_file, s_dkey_format,

 				0, dpass, e,

 			       "second certificate private key file");

 		if (!s_dkey)

 			{

 			ERR_print_errors(bio_err);

 			goto end;

 			}

 		s_dcert = load_cert(bio_err,s_dcert_file,s_dcert_format,

 				NULL, e, "second server certificate file");

 		if (!s_dcert)

 			{

 			ERR_print_errors(bio_err);

 			goto end;

 			}

 		}

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

 		&& !RAND_status())

 		{

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

 		}

 	if (inrand != NULL)

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

 			app_RAND_load_files(inrand));

 	if (bio_s_out == NULL)

 		{

 		if (s_quiet && !s_debug && !s_msg)

 			{

 			bio_s_out=BIO_new(BIO_s_null());

 			}

 		else

 			{

 			if (bio_s_out == NULL)

 				bio_s_out=BIO_new_fp(stdout,BIO_NOCLOSE);

 			}

 		}

 #if !defined(OPENSSL_NO_RSA) || !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)

 	if (nocert)

 #endif

 		{

 		s_cert_file=NULL;

 		s_key_file=NULL;

 		s_dcert_file=NULL;

 		s_dkey_file=NULL;

 		}

 	ctx=SSL_CTX_new(meth);

 	if (ctx == NULL)

 		{

 		ERR_print_errors(bio_err);

 		goto end;

 		}

 	if (session_id_prefix)

 		{

 		if(strlen(session_id_prefix) >= 32)

 			BIO_printf(bio_err,

 "warning: id_prefix is too long, only one new session will be possible\n");

 		else if(strlen(session_id_prefix) >= 16)

 			BIO_printf(bio_err,

 "warning: id_prefix is too long if you use SSLv2\n");

 		if(!SSL_CTX_set_generate_session_id(ctx, generate_session_id))

 			{

 			BIO_printf(bio_err,"error setting 'id_prefix'\n");

 			ERR_print_errors(bio_err);

 			goto end;

 			}

 		BIO_printf(bio_err,"id_prefix '%s' set.\n", session_id_prefix);

 		}

 	SSL_CTX_set_quiet_shutdown(ctx,1);

 	if (bugs) SSL_CTX_set_options(ctx,SSL_OP_ALL);

 	if (hack) SSL_CTX_set_options(ctx,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);

 	SSL_CTX_set_options(ctx,off);

 	/* 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 (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);

 	SSL_CTX_sess_set_cache_size(ctx,128);

 #if 0

 	if (cipher == NULL) cipher=getenv("SSL_CIPHER");

 #endif

 #if 0

 	if (s_cert_file == NULL)

 		{

 		BIO_printf(bio_err,"You must specify a certificate file for the server to use\n");

 		goto end;

 		}

 #endif

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

 		(!SSL_CTX_set_default_verify_paths(ctx)))

 		{

 		/* BIO_printf(bio_err,"X509_load_verify_locations\n"); */

 		ERR_print_errors(bio_err);

 		/* goto end; */

 		}

 	store = SSL_CTX_get_cert_store(ctx);

 	X509_STORE_set_flags(store, vflags);

 #ifndef OPENSSL_NO_DH

 	if (!no_dhe)

 		{

 		DH *dh=NULL;

 		if (dhfile)

 			dh = load_dh_param(dhfile);

 		else if (s_cert_file)

 			dh = load_dh_param(s_cert_file);

 		if (dh != NULL)

 			{

 			BIO_printf(bio_s_out,"Setting temp DH parameters\n");

 			}

 		else

 			{

 			BIO_printf(bio_s_out,"Using default temp DH parameters\n");

 			dh=get_dh512();

 			}

 		(void)BIO_flush(bio_s_out);

 		SSL_CTX_set_tmp_dh(ctx,dh);

 		DH_free(dh);

 		}

 #endif

 #ifndef OPENSSL_NO_ECDH

 	if (!no_ecdhe)

 		{

 		EC_KEY *ecdh=NULL;

 		if (named_curve)

 			{

 			int nid = OBJ_sn2nid(named_curve);

 			if (nid == 0)

 				{

 				BIO_printf(bio_err, "unknown curve name (%s)\n", 

 					named_curve);

 				goto end;

 				}

 			ecdh = EC_KEY_new_by_curve_name(nid);

 			if (ecdh == NULL)

 				{

 				BIO_printf(bio_err, "unable to create curve (%s)\n", 

 					named_curve);

 				goto end;

 				}

 			}

 		if (ecdh != NULL)

 			{

 			BIO_printf(bio_s_out,"Setting temp ECDH parameters\n");

 			}

 		else

 			{

 			BIO_printf(bio_s_out,"Using default temp ECDH parameters\n");

 			ecdh = EC_KEY_new_by_curve_name(NID_sect163r2);

 			if (ecdh == NULL) 

 				{

 				BIO_printf(bio_err, "unable to create curve (sect163r2)\n");

 				goto end;

 				}

 			}

 		(void)BIO_flush(bio_s_out);

 		SSL_CTX_set_tmp_ecdh(ctx,ecdh);

 		EC_KEY_free(ecdh);

 		}

 #endif

 	if (!set_cert_key_stuff(ctx,s_cert,s_key))

 		goto end;

 	if (s_dcert != NULL)

 		{

 		if (!set_cert_key_stuff(ctx,s_dcert,s_dkey))

 			goto end;

 		}

 #ifndef OPENSSL_NO_RSA

 #if 1

 	if (!no_tmp_rsa)

 		{

 		SSL_CTX_set_tmp_rsa_callback(ctx,tmp_rsa_cb);

 		}

 #else

 	if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))

 		{

 		RSA *rsa;

 		BIO_printf(bio_s_out,"Generating temp (512 bit) RSA key...");

 		BIO_flush(bio_s_out);

 		rsa=RSA_generate_key(512,RSA_F4,NULL);

 		if (!SSL_CTX_set_tmp_rsa(ctx,rsa))

 			{

 			ERR_print_errors(bio_err);

 			goto end;

 			}

 		RSA_free(rsa);

 		BIO_printf(bio_s_out,"\n");

 		}

 #endif

 #endif

 	if (cipher != NULL)

 		if(!SSL_CTX_set_cipher_list(ctx,cipher)) {

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

 		ERR_print_errors(bio_err);

 		goto end;

 	}

 	SSL_CTX_set_verify(ctx,s_server_verify,verify_callback);

 	SSL_CTX_set_session_id_context(ctx,(void*)&s_server_session_id_context,

 		sizeof s_server_session_id_context);

 	if (CAfile != NULL)

 		{

 		SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));

 		}

 	BIO_printf(bio_s_out,"ACCEPT\n");

 	if (www)

 		do_server(port,socket_type,&accept_socket,www_body, context);

 	else

 		do_server(port,socket_type,&accept_socket,sv_body, context);

 	print_stats(bio_s_out,ctx);

 	ret=0;

 end:

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

 	if (s_cert)

 		X509_free(s_cert);

 	if (s_dcert)

 		X509_free(s_dcert);

 	if (s_key)

 		EVP_PKEY_free(s_key);

 	if (s_dkey)

 		EVP_PKEY_free(s_dkey);

 	if (pass)

 		OPENSSL_free(pass);

 	if (dpass)

 		OPENSSL_free(dpass);

 	if (bio_s_out != NULL)

 		{

         BIO_free(bio_s_out);

 		bio_s_out=NULL;

 		}

 	apps_shutdown();

 	OPENSSL_EXIT(ret);

 	}

 static void print_stats(BIO *bio, SSL_CTX *ssl_ctx)

 	{

 	BIO_printf(bio,"%4ld items in the session cache\n",

 		SSL_CTX_sess_number(ssl_ctx));

 	BIO_printf(bio,"%4ld client connects (SSL_connect())\n",

 		SSL_CTX_sess_connect(ssl_ctx));

 	BIO_printf(bio,"%4ld client renegotiates (SSL_connect())\n",

 		SSL_CTX_sess_connect_renegotiate(ssl_ctx));

 	BIO_printf(bio,"%4ld client connects that finished\n",

 		SSL_CTX_sess_connect_good(ssl_ctx));

 	BIO_printf(bio,"%4ld server accepts (SSL_accept())\n",

 		SSL_CTX_sess_accept(ssl_ctx));

 	BIO_printf(bio,"%4ld server renegotiates (SSL_accept())\n",

 		SSL_CTX_sess_accept_renegotiate(ssl_ctx));

 	BIO_printf(bio,"%4ld server accepts that finished\n",

 		SSL_CTX_sess_accept_good(ssl_ctx));

 	BIO_printf(bio,"%4ld session cache hits\n",SSL_CTX_sess_hits(ssl_ctx));

 	BIO_printf(bio,"%4ld session cache misses\n",SSL_CTX_sess_misses(ssl_ctx));

 	BIO_printf(bio,"%4ld session cache timeouts\n",SSL_CTX_sess_timeouts(ssl_ctx));

 	BIO_printf(bio,"%4ld callback cache hits\n",SSL_CTX_sess_cb_hits(ssl_ctx));

 	BIO_printf(bio,"%4ld cache full overflows (%ld allowed)\n",

 		SSL_CTX_sess_cache_full(ssl_ctx),

 		SSL_CTX_sess_get_cache_size(ssl_ctx));

 	}

 static int sv_body(char *hostname, int s, unsigned char *context)

 	{

 	char *buf=NULL;

 	fd_set readfds;

 	int ret=1,width;

 	int k,i;

 	unsigned long l;

 	SSL *con=NULL;

 	BIO *sbio;

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

 	struct timeval tv;

 #endif

 	if ((buf=OPENSSL_malloc(bufsize)) == NULL)

 		{

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

 		goto err;

 		}

 #ifdef FIONBIO	

 	if (s_nbio)

 		{

 		unsigned long sl=1;

 		if (!s_quiet)

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

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

 			ERR_print_errors(bio_err);

 		}

 #endif

 	if (con == NULL) {

 		con=SSL_new(ctx);

 #ifndef OPENSSL_NO_KRB5

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

                         {

                         kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVICE,

 								KRB5SVC);

                         kssl_ctx_setstring(con->kssl_ctx, KSSL_KEYTAB,

 								KRB5KEYTAB);

                         }

 #endif	/* OPENSSL_NO_KRB5 */

 		if(context)

 		      SSL_set_session_id_context(con, context,

 						 strlen((char *)context));

 	}

 	SSL_clear(con);

 	if (SSL_version(con) == DTLS1_VERSION)

 		{

 		struct timeval timeout;

 		sbio=BIO_new_dgram(s,BIO_NOCLOSE);

 		if ( enable_timeouts)

 			{

 			timeout.tv_sec = 0;

 			timeout.tv_usec = DGRAM_RCV_TIMEOUT;

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

 			timeout.tv_sec = 0;

 			timeout.tv_usec = DGRAM_SND_TIMEOUT;

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

 			}

 		if ( mtu > 0)

 			{

 			SSL_set_options(con, SSL_OP_NO_QUERY_MTU);

 			SSL_set_mtu(con, mtu);

 			}

 		else

 			/* want to do MTU discovery */

 			BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);

         /* turn on cookie exchange */

         SSL_set_options(con, SSL_OP_COOKIE_EXCHANGE);

 		}

 	else

 		sbio=BIO_new_socket(s,BIO_NOCLOSE);

 	if (s_nbio_test)

 		{

 		BIO *test;

 		test=BIO_new(BIO_f_nbio_test());

 		sbio=BIO_push(test,sbio);

 		}

 	SSL_set_bio(con,sbio,sbio);

 	SSL_set_accept_state(con);

 	/* SSL_set_fd(con,s); */

 	if (s_debug)

 		{

 		con->debug=1;

 		BIO_set_callback(SSL_get_rbio(con),bio_dump_callback);

 		BIO_set_callback_arg(SSL_get_rbio(con),(char *)bio_s_out);

 		}

 	if (s_msg)

 		{

 		SSL_set_msg_callback(con, msg_cb);

 		SSL_set_msg_callback_arg(con, bio_s_out);

 		}

 	width=s+1;

 	for (;;)

 		{

 		int read_from_terminal;

 		int read_from_sslcon;

 		read_from_terminal = 0;

 		read_from_sslcon = SSL_pending(con);

 		if (!read_from_sslcon)

 			{

 			FD_ZERO(&readfds);

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

 			FD_SET(fileno(stdin),&readfds);

 #endif

 			FD_SET(s,&readfds);

 			/* 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) || defined(OPENSSL_SYS_NETWARE)

                         /* Under DOS (non-djgpp) and Windows we can't select on stdin: only

 			 * on sockets. As a workaround we timeout the select every

 			 * second and check for any keypress. In a proper Windows

 			 * application we wouldn't do this because it is inefficient.

 			 */

 			tv.tv_sec = 1;

 			tv.tv_usec = 0;

 			i=select(width,(void *)&readfds,NULL,NULL,&tv);

 			if((i < 0) || (!i && !_kbhit() ) )continue;

 			if(_kbhit())

 				read_from_terminal = 1;

 #else

 			i=select(width,(void *)&readfds,NULL,NULL,NULL);

 			if (i <= 0) continue;

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

 				read_from_terminal = 1;

 #endif

 			if (FD_ISSET(s,&readfds))

 				read_from_sslcon = 1;

 			}

 		if (read_from_terminal)

 			{

 			if (s_crlf)

 				{

 				int j, lf_num;

 				i=read(fileno(stdin), buf, bufsize/2);

 				lf_num = 0;

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

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

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

 						lf_num++;

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

 					{

 					buf[j+lf_num] = buf[j];

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

 						{

 						lf_num--;

 						i++;

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

 						}

 					}

 				assert(lf_num == 0);

 				}

 			else

 				i=read(fileno(stdin),buf,bufsize);

 			if (!s_quiet)

 				{

 				if ((i <= 0) || (buf[0] == 'Q'))

 					{

 					BIO_printf(bio_s_out,"DONE\n");

 					SHUTDOWN(s);

 					close_accept_socket();

 					ret= -11;

 					goto err;

 					}

 				if ((i <= 0) || (buf[0] == 'q'))

 					{

 					BIO_printf(bio_s_out,"DONE\n");

 					if (SSL_version(con) != DTLS1_VERSION)

                         SHUTDOWN(s);

 	/*				close_accept_socket();

 					ret= -11;*/

 					goto err;

 					}

 				if ((buf[0] == 'r') && 

 					((buf[1] == '\n') || (buf[1] == '\r')))

 					{

 					SSL_renegotiate(con);

 					i=SSL_do_handshake(con);

 					printf("SSL_do_handshake -> %d\n",i);

 					i=0; /*13; */

 					continue;

 					/* strcpy(buf,"server side RE-NEGOTIATE\n"); */

 					}

 				if ((buf[0] == 'R') &&

 					((buf[1] == '\n') || (buf[1] == '\r')))

 					{

 					SSL_set_verify(con,

 						SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);

 					SSL_renegotiate(con);

 					i=SSL_do_handshake(con);

 					printf("SSL_do_handshake -> %d\n",i);

 					i=0; /* 13; */

 					continue;

 					/* strcpy(buf,"server side RE-NEGOTIATE asking for client cert\n"); */

 					}

 				if (buf[0] == 'P')

 					{

 					static const char *str="Lets print some clear text\n";

 					BIO_write(SSL_get_wbio(con),str,strlen(str));

 					}

 				if (buf[0] == 'S')

 					{

 					print_stats(bio_s_out,SSL_get_SSL_CTX(con));

 					}

 				}

 #ifdef CHARSET_EBCDIC

 			ebcdic2ascii(buf,buf,i);

 #endif

 			l=k=0;

 			for (;;)

 				{

 				/* should do a select for the write */

 #ifdef RENEG

 { static count=0; if (++count == 100) { count=0; SSL_renegotiate(con); } }

 #endif

 				k=SSL_write(con,&(buf[l]),(unsigned int)i);

 				switch (SSL_get_error(con,k))

 					{

 				case SSL_ERROR_NONE:

 					break;

 				case SSL_ERROR_WANT_WRITE:

 				case SSL_ERROR_WANT_READ:

 				case SSL_ERROR_WANT_X509_LOOKUP:

 					BIO_printf(bio_s_out,"Write BLOCK\n");

 					break;

 				case SSL_ERROR_SYSCALL:

 				case SSL_ERROR_SSL:

 					BIO_printf(bio_s_out,"ERROR\n");

 					ERR_print_errors(bio_err);

 					ret=1;

 					goto err;

 					/* break; */

 				case SSL_ERROR_ZERO_RETURN:

 					BIO_printf(bio_s_out,"DONE\n");

 					ret=1;

 					goto err;

 					}

 				l+=k;

 				i-=k;

 				if (i <= 0) break;

 				}

 			}

 		if (read_from_sslcon)

 			{

 			if (!SSL_is_init_finished(con))

 				{

 				i=init_ssl_connection(con);

 				if (i < 0)

 					{

 					ret=0;

 					goto err;

 					}

 				else if (i == 0)

 					{

 					ret=1;

 					goto err;

 					}

 				}

 			else

 				{

 again:	

 				i=SSL_read(con,(char *)buf,bufsize);

 				switch (SSL_get_error(con,i))

 					{

 				case SSL_ERROR_NONE:

 #ifdef CHARSET_EBCDIC

 					ascii2ebcdic(buf,buf,i);

 #endif

 					write(fileno(stdout),buf,

 						(unsigned int)i);

 					if (SSL_pending(con)) goto again;

 					break;

 				case SSL_ERROR_WANT_WRITE:

 				case SSL_ERROR_WANT_READ:

 				case SSL_ERROR_WANT_X509_LOOKUP:

 					BIO_printf(bio_s_out,"Read BLOCK\n");

 					break;

 				case SSL_ERROR_SYSCALL:

 				case SSL_ERROR_SSL:

 					BIO_printf(bio_s_out,"ERROR\n");

 					ERR_print_errors(bio_err);

 					ret=1;

 					goto err;

 				case SSL_ERROR_ZERO_RETURN:

 					BIO_printf(bio_s_out,"DONE\n");

 					ret=1;

 					goto err;

 					}

 				}

 			}

 		}

 err:

 	BIO_printf(bio_s_out,"shutting down SSL\n");

 #if 1

 	SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);

 #else

 	SSL_shutdown(con);

 #endif

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

 	BIO_printf(bio_s_out,"CONNECTION CLOSED\n");

 	if (buf != NULL)

 		{

 		OPENSSL_cleanse(buf,bufsize);

 		OPENSSL_free(buf);

 		}

 	if (ret >= 0)

 		BIO_printf(bio_s_out,"ACCEPT\n");

 	return(ret);

 	}

 static void close_accept_socket(void)

 	{

 	BIO_printf(bio_err,"shutdown accept socket\n");

 	if (accept_socket >= 0)

 		{

 		SHUTDOWN2(accept_socket);

 		}

 	}

 static int init_ssl_connection(SSL *con)

 	{

 	int i;

 	const char *str;

 	X509 *peer;

 	long verify_error;

 	MS_STATIC char buf[BUFSIZ];

 	if ((i=SSL_accept(con)) <= 0)

 		{

 		if (BIO_sock_should_retry(i))

 			{

 			BIO_printf(bio_s_out,"DELAY\n");

 			return(1);

 			}

 		BIO_printf(bio_err,"ERROR\n");

 		verify_error=SSL_get_verify_result(con);

 		if (verify_error != X509_V_OK)

 			{

 			BIO_printf(bio_err,"verify error:%s\n",

 				X509_verify_cert_error_string(verify_error));

 			}

 		else

 			ERR_print_errors(bio_err);

 		return(0);

 		}

 	PEM_write_bio_SSL_SESSION(bio_s_out,SSL_get_session(con));

 	peer=SSL_get_peer_certificate(con);

 	if (peer != NULL)

 		{

 		BIO_printf(bio_s_out,"Client certificate\n");

 		PEM_write_bio_X509(bio_s_out,peer);

 		X509_NAME_oneline(X509_get_subject_name(peer),buf,sizeof buf);

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

 		X509_NAME_oneline(X509_get_issuer_name(peer),buf,sizeof buf);

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

 		X509_free(peer);

 		}

 	if (SSL_get_shared_ciphers(con,buf,sizeof buf) != NULL)

 		BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);

 	str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));

 	BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");

 	if (con->hit) BIO_printf(bio_s_out,"Reused session-id\n");

 	if (SSL_ctrl(con,SSL_CTRL_GET_FLAGS,0,NULL) &

 		TLS1_FLAGS_TLS_PADDING_BUG)

 		BIO_printf(bio_s_out,"Peer has incorrect TLSv1 block padding\n");

 #ifndef OPENSSL_NO_KRB5

 	if (con->kssl_ctx->client_princ != NULL)

 		{

 		BIO_printf(bio_s_out,"Kerberos peer principal is %s\n",

 			con->kssl_ctx->client_princ);

 		}

 #endif /* OPENSSL_NO_KRB5 */

 	return(1);

 	}

 #ifndef OPENSSL_NO_DH

 static DH *load_dh_param(const char *dhfile)

 	{

 	DH *ret=NULL;

 	BIO *bio;

 	if ((bio=BIO_new_file(dhfile,"r")) == NULL)

 		goto err;

 	ret=PEM_read_bio_DHparams(bio,NULL,NULL,NULL);

 err:

 	if (bio != NULL) BIO_free(bio);

 	return(ret);

 	}

 #endif

 #if 0

 static int load_CA(SSL_CTX *ctx, char *file)

 	{

 	FILE *in;

 	X509 *x=NULL;

 	if ((in=fopen(file,"r")) == NULL)

 		return(0);

 	for (;;)

 		{

 		if (PEM_read_X509(in,&x,NULL) == NULL)

 			break;

 		SSL_CTX_add_client_CA(ctx,x);

 		}

 	if (x != NULL) X509_free(x);

 	fclose(in);

 	return(1);

 	}

 #endif

 static int www_body(char *hostname, int s, unsigned char *context)

 	{

 	char *buf=NULL;

 	int ret=1;

 	int i,j,k,blank,dot;

 	struct stat st_buf;

 	SSL *con;

 	SSL_CIPHER *c;

 	BIO *io,*ssl_bio,*sbio;

 	long total_bytes;

 	buf=OPENSSL_malloc(bufsize);

 	if (buf == NULL) return(0);

 	io=BIO_new(BIO_f_buffer());

 	ssl_bio=BIO_new(BIO_f_ssl());

 	if ((io == NULL) || (ssl_bio == NULL)) goto err;

 #ifdef FIONBIO	

 	if (s_nbio)

 		{

 		unsigned long sl=1;

 		if (!s_quiet)

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

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

 			ERR_print_errors(bio_err);

 		}

 #endif

 	/* lets make the output buffer a reasonable size */

 	if (!BIO_set_write_buffer_size(io,bufsize)) goto err;

 	if ((con=SSL_new(ctx)) == NULL) goto err;

 #ifndef OPENSSL_NO_KRB5

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

 		{

 		kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVICE, KRB5SVC);

 		kssl_ctx_setstring(con->kssl_ctx, KSSL_KEYTAB, KRB5KEYTAB);

 		}

 #endif	/* OPENSSL_NO_KRB5 */

 	if(context) SSL_set_session_id_context(con, context,

 					       strlen((char *)context));

 	sbio=BIO_new_socket(s,BIO_NOCLOSE);

 	if (s_nbio_test)

 		{

 		BIO *test;

 		test=BIO_new(BIO_f_nbio_test());

 		sbio=BIO_push(test,sbio);

 		}

 	SSL_set_bio(con,sbio,sbio);

 	SSL_set_accept_state(con);

 	/* SSL_set_fd(con,s); */

 	BIO_set_ssl(ssl_bio,con,BIO_CLOSE);

 	BIO_push(io,ssl_bio);

 #ifdef CHARSET_EBCDIC

 	io = BIO_push(BIO_new(BIO_f_ebcdic_filter()),io);

 #endif

 	if (s_debug)

 		{

 		con->debug=1;

 		BIO_set_callback(SSL_get_rbio(con),bio_dump_callback);

 		BIO_set_callback_arg(SSL_get_rbio(con),(char *)bio_s_out);

 		}

 	if (s_msg)

 		{

 		SSL_set_msg_callback(con, msg_cb);

 		SSL_set_msg_callback_arg(con, bio_s_out);

 		}

 	blank=0;

 	for (;;)

 		{

 		if (hack)

 			{

 			i=SSL_accept(con);

 			switch (SSL_get_error(con,i))

 				{

 			case SSL_ERROR_NONE:

 				break;

 			case SSL_ERROR_WANT_WRITE:

 			case SSL_ERROR_WANT_READ:

 			case SSL_ERROR_WANT_X509_LOOKUP:

 				continue;

 			case SSL_ERROR_SYSCALL:

 			case SSL_ERROR_SSL:

 			case SSL_ERROR_ZERO_RETURN:

 				ret=1;

 				goto err;

 				/* break; */

 				}

 			SSL_renegotiate(con);

 			SSL_write(con,NULL,0);

 			}

 		i=BIO_gets(io,buf,bufsize-1);

 		if (i < 0) /* error */

 			{

 			if (!BIO_should_retry(io))

 				{

 				if (!s_quiet)

 					ERR_print_errors(bio_err);

 				goto err;

 				}

 			else

 				{

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

 #if defined(OPENSSL_SYS_NETWARE)

             delay(1000);

 #elif !defined(OPENSSL_SYS_MSDOS) && !defined(__DJGPP__)

 				sleep(1);

 #endif

 				continue;

 				}

 			}

 		else if (i == 0) /* end of input */

 			{

 			ret=1;

 			goto end;

 			}

 		/* else we have data */

 		if (	((www == 1) && (strncmp("GET ",buf,4) == 0)) ||

 			((www == 2) && (strncmp("GET /stats ",buf,10) == 0)))

 			{

 			char *p;

 			X509 *peer;

 			STACK_OF(SSL_CIPHER) *sk;

 			static const char *space="                          ";

 			BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");

 			BIO_puts(io,"<HTML><BODY BGCOLOR=\"#ffffff\">\n");

 			BIO_puts(io,"<pre>\n");

 /*			BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/

 			BIO_puts(io,"\n");

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

 				{

 				BIO_puts(io,local_argv[i]);

 				BIO_write(io," ",1);

 				}

 			BIO_puts(io,"\n");

 			/* The following is evil and should not really

 			 * be done */

 			BIO_printf(io,"Ciphers supported in s_server binary\n");

 			sk=SSL_get_ciphers(con);

 			j=sk_SSL_CIPHER_num(sk);

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

 				{

 				c=sk_SSL_CIPHER_value(sk,i);

 				BIO_printf(io,"%-11s:%-25s",

 					SSL_CIPHER_get_version(c),

 					SSL_CIPHER_get_name(c));

 				if ((((i+1)%2) == 0) && (i+1 != j))

 					BIO_puts(io,"\n");

 				}

 			BIO_puts(io,"\n");

 			p=SSL_get_shared_ciphers(con,buf,bufsize);

 			if (p != NULL)

 				{

 				BIO_printf(io,"---\nCiphers common between both SSL end points:\n");

 				j=i=0;

 				while (*p)

 					{

 					if (*p == ':')

 						{

 						BIO_write(io,space,26-j);

 						i++;

 						j=0;

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

 						}

 					else

 						{

 						BIO_write(io,p,1);

 						j++;

 						}

 					p++;

 					}

 				BIO_puts(io,"\n");

 				}

 			BIO_printf(io,((con->hit)

 				?"---\nReused, "

 				:"---\nNew, "));

 			c=SSL_get_current_cipher(con);

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

 				SSL_CIPHER_get_version(c),

 				SSL_CIPHER_get_name(c));

 			SSL_SESSION_print(io,SSL_get_session(con));

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

 			print_stats(io,SSL_get_SSL_CTX(con));

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

 			peer=SSL_get_peer_certificate(con);

 			if (peer != NULL)

 				{

 				BIO_printf(io,"Client certificate\n");

 				X509_print(io,peer);

 				PEM_write_bio_X509(io,peer);

 				}

 			else

 				BIO_puts(io,"no client certificate available\n");

 			BIO_puts(io,"</BODY></HTML>\r\n\r\n");

 			break;

 			}

 		else if ((www == 2 || www == 3)

                          && (strncmp("GET /",buf,5) == 0))

 			{

 			BIO *file;

 			char *p,*e;

 			static const char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";

 			/* skip the '/' */

 			p= &(buf[5]);

 			dot = 1;

 			for (e=p; *e != '\0'; e++)

 				{

 				if (e[0] == ' ')

 					break;

 				switch (dot)

 					{

 				case 1:

 					dot = (e[0] == '.') ? 2 : 0;

 					break;

 				case 2:

 					dot = (e[0] == '.') ? 3 : 0;

 					break;

 				case 3:

 					dot = (e[0] == '/') ? -1 : 0;

 					break;

 					}

 				if (dot == 0)

 					dot = (e[0] == '/') ? 1 : 0;

 				}

 			dot = (dot == 3) || (dot == -1); /* filename contains ".." component */

 			if (*e == '\0')

 				{

 				BIO_puts(io,text);

 				BIO_printf(io,"'%s' is an invalid file name\r\n",p);

 				break;

 				}

 			*e='\0';

 			if (dot)

 				{

 				BIO_puts(io,text);

 				BIO_printf(io,"'%s' contains '..' reference\r\n",p);

 				break;

 				}

 			if (*p == '/')

 				{

 				BIO_puts(io,text);

 				BIO_printf(io,"'%s' is an invalid path\r\n",p);

 				break;

 				}

 #if 0

 			/* append if a directory lookup */

 			if (e[-1] == '/')

 				strcat(p,"index.html");

 #endif

 			/* if a directory, do the index thang */

 			if (stat(p,&st_buf) < 0)

 				{

 				BIO_puts(io,text);

 				BIO_printf(io,"Error accessing '%s'\r\n",p);

 				ERR_print_errors(io);

 				break;

 				}

 			if (S_ISDIR(st_buf.st_mode))

 				{

 #if 0 /* must check buffer size */

 				strcat(p,"/index.html");

 #else

 				BIO_puts(io,text);

 				BIO_printf(io,"'%s' is a directory\r\n",p);

 				break;

 #endif

 				}

 			if ((file=BIO_new_file(p,"r")) == NULL)

 				{

 				BIO_puts(io,text);

 				BIO_printf(io,"Error opening '%s'\r\n",p);

 				ERR_print_errors(io);

 				break;

 				}

 			if (!s_quiet)

 				BIO_printf(bio_err,"FILE:%s\n",p);

                         if (www == 2)

                                 {

                                 i=strlen(p);

                                 if (	((i > 5) && (strcmp(&(p[i-5]),".html") == 0)) ||

                                         ((i > 4) && (strcmp(&(p[i-4]),".php") == 0)) ||

                                         ((i > 4) && (strcmp(&(p[i-4]),".htm") == 0)))

                                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");

                                 else

                                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");

                                 }

 			/* send the file */

 			total_bytes=0;

 			for (;;)

 				{

 				i=BIO_read(file,buf,bufsize);

 				if (i <= 0) break;

 #ifdef RENEG

 				total_bytes+=i;

 				fprintf(stderr,"%d\n",i);

 				if (total_bytes > 3*1024)

 					{

 					total_bytes=0;

 					fprintf(stderr,"RENEGOTIATE\n");

 					SSL_renegotiate(con);

 					}

 #endif

 				for (j=0; j<i; )

 					{

 #ifdef RENEG

 { static count=0; if (++count == 13) { SSL_renegotiate(con); } }

 #endif

 					k=BIO_write(io,&(buf[j]),i-j);

 					if (k <= 0)

 						{

 						if (!BIO_should_retry(io))

 							goto write_error;

 						else

 							{

 							BIO_printf(bio_s_out,"rwrite W BLOCK\n");

 							}

 						}

 					else

 						{

 						j+=k;

 						}

 					}

 				}

 write_error:

 			BIO_free(file);

 			break;

 			}

 		}

 	for (;;)

 		{

 		i=(int)BIO_flush(io);

 		if (i <= 0)

 			{

 			if (!BIO_should_retry(io))

 				break;

 			}

 		else

 			break;

 		}

 end:

 #if 1

 	/* make sure we re-use sessions */

 	SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);

 #else

 	/* This kills performance */

 /*	SSL_shutdown(con); A shutdown gets sent in the

  *	BIO_free_all(io) procession */

 #endif

 err:

 	if (ret >= 0)

 		BIO_printf(bio_s_out,"ACCEPT\n");

 	if (buf != NULL) OPENSSL_free(buf);

 	if (io != NULL) BIO_free_all(io);

 /*	if (ssl_bio != NULL) BIO_free(ssl_bio);*/

 	return(ret);

 	}

 #ifndef OPENSSL_NO_RSA

 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength)

 	{

 	BIGNUM *bn = NULL;

 	static RSA *rsa_tmp=NULL;

 	if (!rsa_tmp && ((bn = BN_new()) == NULL))

 		BIO_printf(bio_err,"Allocation error in generating RSA key\n");

 	if (!rsa_tmp && bn)

 		{

 		if (!s_quiet)

 			{

 			BIO_printf(bio_err,"Generating temp (%d bit) RSA key...",keylength);

 			(void)BIO_flush(bio_err);

 			}

 		if(!BN_set_word(bn, RSA_F4) || ((rsa_tmp = RSA_new()) == NULL) ||

 				!RSA_generate_key_ex(rsa_tmp, keylength, bn, NULL))

 			{

 			if(rsa_tmp) RSA_free(rsa_tmp);

 			rsa_tmp = NULL;

 			}

 		if (!s_quiet)

 			{

 			BIO_printf(bio_err,"\n");

 			(void)BIO_flush(bio_err);

 			}

 		BN_free(bn);

 		}

 	return(rsa_tmp);

 	}

 #endif

 #define MAX_SESSION_ID_ATTEMPTS 10

 static int generate_session_id(const SSL *ssl, unsigned char *id,

 				unsigned int *id_len)

 	{

 	unsigned int count = 0;

 	do	{

 		RAND_pseudo_bytes(id, *id_len);

 		/* Prefix the session_id with the required prefix. NB: If our

 		 * prefix is too long, clip it - but there will be worse effects

 		 * anyway, eg. the server could only possibly create 1 session

 		 * ID (ie. the prefix!) so all future session negotiations will

 		 * fail due to conflicts. */

 		memcpy(id, session_id_prefix,

 			(strlen(session_id_prefix) < *id_len) ?

 			strlen(session_id_prefix) : *id_len);

 		}

 	while(SSL_has_matching_session_id(ssl, id, *id_len) &&

 		(++count < MAX_SESSION_ID_ATTEMPTS));

 	if(count >= MAX_SESSION_ID_ATTEMPTS)

 		return 0;

 	return 1;

 	}