/* 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