X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=apps%2Fs_server.c;h=9982d6ac7e29d8ec4ba5fafc2093437f2d641584;hp=cc2c10d10cfbcde754bb4f97ab1ae445dc50dd38;hb=bcbe37b716780763ee66c839618bd76eda2b507c;hpb=bcfea9fb25738b007cfef48d5070376c4398675a

diff --git a/apps/s_server.c b/apps/s_server.c
index cc2c10d10c..9982d6ac7e 100644
--- a/apps/s_server.c
+++ b/apps/s_server.c
@@ -56,7 +56,7 @@
  * [including the GNU Public Licence.]
  */
 /* ====================================================================
- * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
+ * 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
@@ -113,6 +113,32 @@
  * ECC cipher suite support in OpenSSL originally developed by 
  * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
  */
+/* ====================================================================
+ * 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.
+ */
 
 /* Until the key-gen callbacks are modified to use newer prototypes, we allow
  * deprecated functions for openssl-internal code */
@@ -121,11 +147,11 @@
 #endif
 
 #include <assert.h>
+#include <ctype.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
-#include <sys/stat.h>
 #include <openssl/e_os2.h>
 #ifdef OPENSSL_NO_STDIO
 #define APPS_WIN16
@@ -153,15 +179,14 @@ typedef unsigned int u_int;
 #include <openssl/x509.h>
 #include <openssl/ssl.h>
 #include <openssl/rand.h>
-#include "s_apps.h"
-
-#ifdef OPENSSL_SYS_WINCE
-/* Windows CE incorrectly defines fileno as returning void*, so to avoid problems below... */
-#ifdef fileno
-#undef fileno
+#ifndef OPENSSL_NO_DH
+#include <openssl/dh.h>
 #endif
-#define fileno(a) (int)_fileno(a)
+#ifndef OPENSSL_NO_RSA
+#include <openssl/rsa.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 */
@@ -180,7 +205,7 @@ 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(char *dhfile);
+static DH *load_dh_param(const char *dhfile);
 static DH *get_dh512(void);
 #endif
 
@@ -188,14 +213,6 @@ static DH *get_dh512(void);
 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,
@@ -231,6 +248,9 @@ static int bufsize=BUFSIZZ;
 static int accept_socket= -1;
 
 #define TEST_CERT	"server.pem"
+#ifndef OPENSSL_NO_TLSEXT
+#define TEST_CERT2	"server2.pem"
+#endif
 #undef PROG
 #define PROG		s_server_main
 
@@ -239,7 +259,10 @@ 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 char *s_cert_file=TEST_CERT,*s_key_file=NULL;
+static const char *s_cert_file=TEST_CERT,*s_key_file=NULL;
+#ifndef OPENSSL_NO_TLSEXT
+static const char *s_cert_file2=TEST_CERT2,*s_key_file2=NULL;
+#endif
 static char *s_dcert_file=NULL,*s_dkey_file=NULL;
 #ifdef FIONBIO
 static int s_nbio=0;
@@ -247,6 +270,9 @@ static int s_nbio=0;
 static int s_nbio_test=0;
 int s_crlf=0;
 static SSL_CTX *ctx=NULL;
+#ifndef OPENSSL_NO_TLSEXT
+static SSL_CTX *ctx2=NULL;
+#endif
 static int www=0;
 
 static BIO *bio_s_out=NULL;
@@ -260,6 +286,75 @@ static char *engine_id=NULL;
 #endif
 static const char *session_id_prefix=NULL;
 
+static int enable_timeouts = 0;
+static long socket_mtu;
+static int cert_chain = 0;
+
+#ifndef OPENSSL_NO_PSK
+static char *psk_identity="Client_identity";
+static char *psk_key=NULL; /* by default PSK is not used */
+
+static unsigned int psk_server_cb(SSL *ssl, const char *identity,
+	unsigned char *psk, unsigned int max_psk_len)
+	{
+	unsigned int psk_len = 0;
+	int ret;
+	BIGNUM *bn = NULL;
+
+	if (s_debug)
+		BIO_printf(bio_s_out,"psk_server_cb\n");
+	if (!identity)
+		{
+		BIO_printf(bio_err,"Error: client did not send PSK identity\n");
+		goto out_err;
+		}
+	if (s_debug)
+		BIO_printf(bio_s_out,"identity_len=%d identity=%s\n",
+			identity ? strlen(identity) : 0, identity);
+
+	/* here we could lookup the given identity e.g. from a database */
+  	if (strcmp(identity, psk_identity) != 0)
+		{
+                BIO_printf(bio_s_out, "PSK error: client identity not found\n");
+		goto out_err;
+                }
+	if (s_debug)
+		BIO_printf(bio_s_out, "PSK client identity found\n");
+
+	/* convert the PSK key to binary */
+	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 (BN_num_bytes(bn) > (int)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;
+		}
+
+	ret = BN_bn2bin(bn, psk);
+	BN_free(bn);
+
+	if (ret < 0)
+		goto out_err;
+	psk_len = (unsigned int)ret;
+
+	if (s_debug)
+		BIO_printf(bio_s_out, "fetched PSK len=%d\n", psk_len);
+        return psk_len;
+ out_err:
+	if (s_debug)
+		BIO_printf(bio_err, "Error in PSK server callback\n");
+	return 0;
+        }
+#endif
+
 #ifdef MONOLITH
 static void s_server_init(void)
 	{
@@ -270,6 +365,11 @@ static void s_server_init(void)
 	s_dkey_file=NULL;
 	s_cert_file=TEST_CERT;
 	s_key_file=NULL;
+#ifndef OPENSSL_NO_TLSEXT
+	s_cert_file2=TEST_CERT2;
+	s_key_file2=NULL;
+	ctx2=NULL;
+#endif
 #ifdef FIONBIO
 	s_nbio=0;
 #endif
@@ -296,18 +396,24 @@ static void sv_usage(void)
 	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, PEM format assumed\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," -key arg      - Private Key file to use, PEM format assumed, in cert file if\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 (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");
+	                   "                 (default is nistp256).\n");
 #endif
 #ifdef FIONBIO
 	BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
@@ -324,9 +430,17 @@ static void sv_usage(void)
 	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");
+#ifndef OPENSSL_NO_PSK
+	BIO_printf(bio_err," -psk_hint arg - PSK identity hint to use\n");
+	BIO_printf(bio_err," -psk arg      - PSK in hex (without 0x)\n");
+#endif
 	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");
@@ -346,6 +460,14 @@ static void sv_usage(void)
 #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);
+#ifndef OPENSSL_NO_TLSEXT
+	BIO_printf(bio_err," -servername host - servername for HostName TLS extension\n");
+	BIO_printf(bio_err," -servername_fatal - on mismatch send fatal alert (default warning alert)\n");
+	BIO_printf(bio_err," -cert2 arg    - certificate file to use for servername\n");
+	BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT2);
+	BIO_printf(bio_err," -key2 arg     - Private Key file to use for servername, in cert file if\n");
+	BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT2);
+#endif
 	}
 
 static int local_argc=0;
@@ -501,6 +623,40 @@ static int ebcdic_puts(BIO *bp, const char *str)
 }
 #endif
 
+#ifndef OPENSSL_NO_TLSEXT
+
+/* This is a context that we pass to callbacks */
+typedef struct tlsextctx_st {
+   char * servername;
+   BIO * biodebug;
+   int extension_error;
+} tlsextctx;
+
+
+static int MS_CALLBACK ssl_servername_cb(SSL *s, int *ad, void *arg)
+	{
+	tlsextctx * p = (tlsextctx *) arg;
+	const char * servername = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
+        if (servername && p->biodebug) 
+		BIO_printf(p->biodebug,"Hostname in TLS extension: \"%s\"\n",servername);
+        
+	if (!p->servername)
+		return SSL_TLSEXT_ERR_NOACK;
+	
+	if (servername)
+		{
+    		if (strcmp(servername,p->servername)) 
+			return p->extension_error;
+		if (ctx2)
+			{
+			BIO_printf(p->biodebug,"Swiching server context.\n");
+			SSL_set_SSL_CTX(s,ctx2);
+			}     
+		}
+	return SSL_TLSEXT_ERR_OK;
+}
+#endif
+
 int MAIN(int, char **);
 
 int MAIN(int argc, char *argv[])
@@ -509,20 +665,40 @@ int MAIN(int argc, char *argv[])
 	int vflags = 0;
 	short port=PORT;
 	char *CApath=NULL,*CAfile=NULL;
-	char *context = 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;
+	const 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;
+#ifndef OPENSSL_NO_TLSEXT
+	EVP_PKEY *s_key2 = NULL;
+	X509 *s_cert2 = NULL;
+#endif
 
+#ifndef OPENSSL_NO_TLSEXT
+        tlsextctx tlsextcbp = {NULL, NULL, SSL_TLSEXT_ERR_ALERT_WARNING};
+#endif
+#ifndef OPENSSL_NO_PSK
+	/* by default do not send a PSK identity hint */
+	static char *psk_identity_hint=NULL;
+#endif
 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
 	meth=SSLv23_server_method();
 #elif !defined(OPENSSL_NO_SSL3)
@@ -581,18 +757,33 @@ int MAIN(int argc, char *argv[])
 		else if	(strcmp(*argv,"-context") == 0)
 			{
 			if (--argc < 1) goto bad;
-			context= *(++argv);
+			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;
@@ -605,11 +796,26 @@ int MAIN(int argc, char *argv[])
 			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;
@@ -675,6 +881,27 @@ int MAIN(int argc, char *argv[])
 			{ no_dhe=1; }
 		else if	(strcmp(*argv,"-no_ecdhe") == 0)
 			{ no_ecdhe=1; }
+#ifndef OPENSSL_NO_PSK
+                else if (strcmp(*argv,"-psk_hint") == 0)
+			{
+                        if (--argc < 1) goto bad;
+                        psk_identity_hint= *(++argv);
+                        }
+                else if (strcmp(*argv,"-psk") == 0)
+			{
+			size_t i;
+
+			if (--argc < 1) goto bad;
+			psk_key=*(++argv);
+			for (i=0; i<strlen(psk_key); i++)
+				{
+				if (isxdigit((int)psk_key[i]))
+					continue;
+				BIO_printf(bio_err,"Not a hex number '%s'\n",*argv);
+				goto bad;
+				}
+			}
+#endif
 		else if	(strcmp(*argv,"-www") == 0)
 			{ www=1; }
 		else if	(strcmp(*argv,"-WWW") == 0)
@@ -687,6 +914,8 @@ int MAIN(int argc, char *argv[])
 			{ off|=SSL_OP_NO_SSLv3; }
 		else if	(strcmp(*argv,"-no_tls1") == 0)
 			{ off|=SSL_OP_NO_TLSv1; }
+		else if	(strcmp(*argv,"-no_comp") == 0)
+			{ off|=SSL_OP_NO_COMPRESSION; }
 #ifndef OPENSSL_NO_SSL2
 		else if	(strcmp(*argv,"-ssl2") == 0)
 			{ meth=SSLv2_server_method(); }
@@ -698,6 +927,22 @@ int MAIN(int argc, char *argv[])
 #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;
+			socket_mtu = atol(*(++argv));
+			}
+		else if (strcmp(*argv, "-chain") == 0)
+			cert_chain = 1;
 #endif
 		else if (strcmp(*argv, "-id_prefix") == 0)
 			{
@@ -716,6 +961,25 @@ int MAIN(int argc, char *argv[])
 			if (--argc < 1) goto bad;
 			inrand= *(++argv);
 			}
+#ifndef OPENSSL_NO_TLSEXT
+		else if (strcmp(*argv,"-servername") == 0)
+			{
+			if (--argc < 1) goto bad;
+			tlsextcbp.servername= *(++argv);
+			}
+		else if (strcmp(*argv,"-servername_fatal") == 0)
+			{ tlsextcbp.extension_error = SSL_TLSEXT_ERR_ALERT_FATAL; }
+		else if	(strcmp(*argv,"-cert2") == 0)
+			{
+			if (--argc < 1) goto bad;
+			s_cert_file2= *(++argv);
+			}
+		else if	(strcmp(*argv,"-key2") == 0)
+			{
+			if (--argc < 1) goto bad;
+			s_key_file2= *(++argv);
+			}
+#endif
 		else
 			{
 			BIO_printf(bio_err,"unknown option %s\n",*argv);
@@ -739,6 +1003,89 @@ bad:
         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;
+#ifndef OPENSSL_NO_TLSEXT
+	if (s_key_file2 == NULL)
+		s_key_file2 = s_cert_file2;
+#endif
+
+	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;
+			}
+
+#ifndef OPENSSL_NO_TLSEXT
+		if (tlsextcbp.servername) 
+			{
+			s_key2 = load_key(bio_err, s_key_file2, s_key_format, 0, pass, e,
+				"second server certificate private key file");
+			if (!s_key2)
+				{
+				ERR_print_errors(bio_err);
+				goto end;
+				}
+			
+			s_cert2 = load_cert(bio_err,s_cert_file2,s_cert_format,
+				NULL, e, "second server certificate file");
+			
+			if (!s_cert2)
+				{
+				ERR_print_errors(bio_err);
+				goto end;
+				}
+			}
+#endif
+		}
+
+
+	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())
 		{
@@ -769,6 +1116,10 @@ bad:
 		s_key_file=NULL;
 		s_dcert_file=NULL;
 		s_dkey_file=NULL;
+#ifndef OPENSSL_NO_TLSEXT
+		s_cert_file2=NULL;
+		s_key_file2=NULL;
+#endif
 		}
 
 	ctx=SSL_CTX_new(meth);
@@ -797,6 +1148,10 @@ bad:
 	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);
 
@@ -824,6 +1179,60 @@ bad:
 	store = SSL_CTX_get_cert_store(ctx);
 	X509_STORE_set_flags(store, vflags);
 
+#ifndef OPENSSL_NO_TLSEXT
+	if (s_cert2)
+		{
+		ctx2=SSL_CTX_new(meth);
+		if (ctx2 == NULL)
+			{
+			ERR_print_errors(bio_err);
+			goto end;
+			}
+		}
+	
+	if (ctx2)
+		{
+		BIO_printf(bio_s_out,"Setting secondary ctx parameters\n");
+
+		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(ctx2, 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(ctx2,1);
+		if (bugs) SSL_CTX_set_options(ctx2,SSL_OP_ALL);
+		if (hack) SSL_CTX_set_options(ctx2,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
+		SSL_CTX_set_options(ctx2,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(ctx2, 1);
+
+		if (state) SSL_CTX_set_info_callback(ctx2,apps_ssl_info_callback);
+
+		SSL_CTX_sess_set_cache_size(ctx2,128);
+
+		if ((!SSL_CTX_load_verify_locations(ctx2,CAfile,CApath)) ||
+			(!SSL_CTX_set_default_verify_paths(ctx2)))
+			{
+			ERR_print_errors(bio_err);
+			}
+		store = SSL_CTX_get_cert_store(ctx2);
+		X509_STORE_set_flags(store, vflags);
+		}
+#endif 
+
 #ifndef OPENSSL_NO_DH
 	if (!no_dhe)
 		{
@@ -846,6 +1255,24 @@ bad:
 		(void)BIO_flush(bio_s_out);
 
 		SSL_CTX_set_tmp_dh(ctx,dh);
+#ifndef OPENSSL_NO_TLSEXT
+		if (ctx2)
+			{
+			if (!dhfile)
+				{ 
+				DH *dh2=load_dh_param(s_cert_file2);
+				if (dh2 != NULL)
+					{
+					BIO_printf(bio_s_out,"Setting temp DH parameters\n");
+					(void)BIO_flush(bio_s_out);
+
+					DH_free(dh);
+					dh = dh2;
+					}
+				}
+			SSL_CTX_set_tmp_dh(ctx2,dh);
+			}
+#endif
 		DH_free(dh);
 		}
 #endif
@@ -855,13 +1282,6 @@ bad:
 		{
 		EC_KEY *ecdh=NULL;
 
-		ecdh = EC_KEY_new();
-		if (ecdh == NULL)
-			{
-			BIO_printf(bio_err,"Could not create ECDH struct.\n");
-			goto end;
-			}
-
 		if (named_curve)
 			{
 			int nid = OBJ_sn2nid(named_curve);
@@ -872,9 +1292,8 @@ bad:
 					named_curve);
 				goto end;
 				}
-
-			ecdh->group = EC_GROUP_new_by_nid(nid);
-			if (ecdh->group == NULL)
+			ecdh = EC_KEY_new_by_curve_name(nid);
+			if (ecdh == NULL)
 				{
 				BIO_printf(bio_err, "unable to create curve (%s)\n", 
 					named_curve);
@@ -882,39 +1301,53 @@ bad:
 				}
 			}
 
-		if (ecdh->group != NULL)
+		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->group=EC_GROUP_new_by_nid(NID_sect163r2);
-			if (ecdh->group == NULL) 
+			ecdh = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);
+			if (ecdh == NULL) 
 				{
-				BIO_printf(bio_err, "unable to create curve (sect163r2)\n");
+				BIO_printf(bio_err, "unable to create curve (nistp256)\n");
 				goto end;
 				}
 			}
 		(void)BIO_flush(bio_s_out);
 
 		SSL_CTX_set_tmp_ecdh(ctx,ecdh);
+#ifndef OPENSSL_NO_TLSEXT
+		if (ctx2) 
+			SSL_CTX_set_tmp_ecdh(ctx2,ecdh);
+#endif
 		EC_KEY_free(ecdh);
 		}
 #endif
 	
-	if (!set_cert_stuff(ctx,s_cert_file,s_key_file))
+	if (!set_cert_key_stuff(ctx,s_cert,s_key))
 		goto end;
-	if (s_dcert_file != NULL)
+#ifndef OPENSSL_NO_TLSEXT
+	if (ctx2 && !set_cert_key_stuff(ctx2,s_cert2,s_key2))
+		goto end; 
+#endif
+	if (s_dcert != NULL)
 		{
-		if (!set_cert_stuff(ctx,s_dcert_file,s_dkey_file))
+		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);
+#ifndef OPENSSL_NO_TLSEXT
+		if (ctx2) 
+			SSL_CTX_set_tmp_rsa_callback(ctx2,tmp_rsa_cb);
+#endif		
+		}
 #else
 	if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))
 		{
@@ -930,37 +1363,114 @@ bad:
 			ERR_print_errors(bio_err);
 			goto end;
 			}
+#ifndef OPENSSL_NO_TLSEXT
+			if (ctx2)
+				{
+				if (!SSL_CTX_set_tmp_rsa(ctx2,rsa))
+					{
+					ERR_print_errors(bio_err);
+					goto end;
+					}
+				}
+#endif
 		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");
+#ifndef OPENSSL_NO_PSK
+	if (psk_key != NULL)
+		{
+		if (s_debug)
+			BIO_printf(bio_s_out, "PSK key given, setting server callback\n");
+		SSL_CTX_set_psk_server_callback(ctx, psk_server_cb);
+		}
+
+	if (!SSL_CTX_use_psk_identity_hint(ctx, psk_identity_hint))
+		{
+		BIO_printf(bio_err,"error setting PSK identity hint to context\n");
 		ERR_print_errors(bio_err);
 		goto end;
-	}
+		}
+#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;
+			}
+#ifndef OPENSSL_NO_TLSEXT
+		if (ctx2 && !SSL_CTX_set_cipher_list(ctx2,cipher))
+			{
+			BIO_printf(bio_err,"error setting cipher list\n");
+			ERR_print_errors(bio_err);
+			goto end;
+			}
+#endif
+		}
 	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);
 
+#ifndef OPENSSL_NO_TLSEXT
+	if (ctx2)
+		{
+		SSL_CTX_set_verify(ctx2,s_server_verify,verify_callback);
+		SSL_CTX_set_session_id_context(ctx2,(void*)&s_server_session_id_context,
+			sizeof s_server_session_id_context);
+
+		tlsextcbp.biodebug = bio_s_out;
+		SSL_CTX_set_tlsext_servername_callback(ctx2, ssl_servername_cb);
+		SSL_CTX_set_tlsext_servername_arg(ctx2, &tlsextcbp);
+		SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
+		SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
+		}
+#endif
+
 	if (CAfile != NULL)
-	    SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));
+		{
+		SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));
+#ifndef OPENSSL_NO_TLSEXT
+		if (ctx2) 
+			SSL_CTX_set_client_CA_list(ctx2,SSL_load_client_CA_file(CAfile));
+#endif
+		}
 
 	BIO_printf(bio_s_out,"ACCEPT\n");
 	if (www)
-		do_server(port,&accept_socket,www_body, context);
+		do_server(port,socket_type,&accept_socket,www_body, context);
 	else
-		do_server(port,&accept_socket,sv_body, context);
+		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);
+#ifndef OPENSSL_NO_TLSEXT
+	if (ctx2 != NULL) SSL_CTX_free(ctx2);
+	if (s_cert2)
+		X509_free(s_cert2);
+	if (s_key2)
+		EVP_PKEY_free(s_key2);
+#endif
 	if (bio_s_out != NULL)
 		{
-		BIO_free(bio_s_out);
+        BIO_free(bio_s_out);
 		bio_s_out=NULL;
 		}
 	apps_shutdown();
@@ -1039,7 +1549,38 @@ static int sv_body(char *hostname, int s, unsigned char *context)
 	}
 	SSL_clear(con);
 
-	sbio=BIO_new_socket(s,BIO_NOCLOSE);
+	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 (socket_mtu > 0)
+			{
+			SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
+			SSL_set_mtu(con, socket_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;
@@ -1054,7 +1595,7 @@ static int sv_body(char *hostname, int s, unsigned char *context)
 	if (s_debug)
 		{
 		con->debug=1;
-		BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
+		BIO_set_callback(SSL_get_rbio(con),bio_dump_callback);
 		BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
 		}
 	if (s_msg)
@@ -1112,7 +1653,7 @@ static int sv_body(char *hostname, int s, unsigned char *context)
 				{
 				int j, lf_num;
 
-				i=read(fileno(stdin), buf, bufsize/2);
+				i=raw_read_stdin(buf, bufsize/2);
 				lf_num = 0;
 				/* both loops are skipped when i <= 0 */
 				for (j = 0; j < i; j++)
@@ -1131,7 +1672,7 @@ static int sv_body(char *hostname, int s, unsigned char *context)
 				assert(lf_num == 0);
 				}
 			else
-				i=read(fileno(stdin),buf,bufsize);
+				i=raw_read_stdin(buf,bufsize);
 			if (!s_quiet)
 				{
 				if ((i <= 0) || (buf[0] == 'Q'))
@@ -1145,11 +1686,13 @@ static int sv_body(char *hostname, int s, unsigned char *context)
 				if ((i <= 0) || (buf[0] == 'q'))
 					{
 					BIO_printf(bio_s_out,"DONE\n");
-					SHUTDOWN(s);
+					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')))
 					{
@@ -1174,7 +1717,7 @@ static int sv_body(char *hostname, int s, unsigned char *context)
 					}
 				if (buf[0] == 'P')
 					{
-					static char *str="Lets print some clear text\n";
+					static const char *str="Lets print some clear text\n";
 					BIO_write(SSL_get_wbio(con),str,strlen(str));
 					}
 				if (buf[0] == 'S')
@@ -1246,7 +1789,7 @@ again:
 #ifdef CHARSET_EBCDIC
 					ascii2ebcdic(buf,buf,i);
 #endif
-					write(fileno(stdout),buf,
+					raw_write_stdout(buf,
 						(unsigned int)i);
 					if (SSL_pending(con)) goto again;
 					break;
@@ -1270,13 +1813,16 @@ again:
 			}
 		}
 err:
-	BIO_printf(bio_s_out,"shutting down SSL\n");
+	if (con != NULL)
+		{
+		BIO_printf(bio_s_out,"shutting down SSL\n");
 #if 1
-	SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
+		SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 #else
-	SSL_shutdown(con);
+		SSL_shutdown(con);
 #endif
-	if (con != NULL) SSL_free(con);
+		SSL_free(con);
+		}
 	BIO_printf(bio_s_out,"CONNECTION CLOSED\n");
 	if (buf != NULL)
 		{
@@ -1358,7 +1904,7 @@ static int init_ssl_connection(SSL *con)
 	}
 
 #ifndef OPENSSL_NO_DH
-static DH *load_dh_param(char *dhfile)
+static DH *load_dh_param(const char *dhfile)
 	{
 	DH *ret=NULL;
 	BIO *bio;
@@ -1398,7 +1944,6 @@ 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;
@@ -1457,7 +2002,7 @@ static int www_body(char *hostname, int s, unsigned char *context)
 	if (s_debug)
 		{
 		con->debug=1;
-		BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
+		BIO_set_callback(SSL_get_rbio(con),bio_dump_callback);
 		BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
 		}
 	if (s_msg)
@@ -1526,7 +2071,7 @@ static int www_body(char *hostname, int s, unsigned char *context)
 			char *p;
 			X509 *peer;
 			STACK_OF(SSL_CIPHER) *sk;
-			static char *space="                          ";
+			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");
@@ -1606,7 +2151,7 @@ static int www_body(char *hostname, int s, unsigned char *context)
 			{
 			BIO *file;
 			char *p,*e;
-			static char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
+			static const char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
 
 			/* skip the '/' */
 			p= &(buf[5]);
@@ -1663,14 +2208,7 @@ static int www_body(char *hostname, int s, unsigned char *context)
 #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 (app_isdir(p)>0)
 				{
 #if 0 /* must check buffer size */
 				strcat(p,"/index.html");