X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=apps%2Fs_cb.c;h=0c5c39e4f0aa2aa21d86e1e7440446b57c6e4dd2;hp=7fa855c5dcf74b136f3a7660aba8833aa4211ebd;hb=579d553464604832911c1eb08d014f487e54e0ff;hpb=31b8d8684441e6cd5138832bb1b2ddb10acd6ba6

diff --git a/apps/s_cb.c b/apps/s_cb.c
index 7fa855c5dc..0c5c39e4f0 100644
--- a/apps/s_cb.c
+++ b/apps/s_cb.c
@@ -1,4 +1,4 @@
-/* apps/s_cb.c */
+/* apps/s_cb.c - callback functions used by s_client, s_server, and s_time */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -55,6 +55,59 @@
  * copied and put under another distribution licence
  * [including the GNU Public Licence.]
  */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -63,19 +116,22 @@
 #include "apps.h"
 #undef NON_MAIN
 #undef USE_SOCKETS
-#include "err.h"
-#include "x509.h"
-#include "ssl.h"
+#include <openssl/err.h>
+#include <openssl/rand.h>
+#include <openssl/x509.h>
+#include <openssl/ssl.h>
 #include "s_apps.h"
 
+#define	COOKIE_SECRET_LENGTH	16
+
 int verify_depth=0;
 int verify_error=X509_V_OK;
+int verify_return_error=0;
+unsigned char cookie_secret[COOKIE_SECRET_LENGTH];
+int cookie_initialized=0;
 
-int MS_CALLBACK verify_callback(ok, ctx)
-int ok;
-X509_STORE_CTX *ctx;
+int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx)
 	{
-	char buf[256];
 	X509 *err_cert;
 	int err,depth;
 
@@ -83,15 +139,23 @@ X509_STORE_CTX *ctx;
 	err=	X509_STORE_CTX_get_error(ctx);
 	depth=	X509_STORE_CTX_get_error_depth(ctx);
 
-	X509_NAME_oneline(X509_get_subject_name(err_cert),buf,256);
-	BIO_printf(bio_err,"depth=%d %s\n",depth,buf);
+	BIO_printf(bio_err,"depth=%d ",depth);
+	if (err_cert)
+		{
+		X509_NAME_print_ex(bio_err, X509_get_subject_name(err_cert),
+					0, XN_FLAG_ONELINE);
+		BIO_puts(bio_err, "\n");
+		}
+	else
+		BIO_puts(bio_err, "<no cert>\n");
 	if (!ok)
 		{
 		BIO_printf(bio_err,"verify error:num=%d:%s\n",err,
 			X509_verify_cert_error_string(err));
 		if (verify_depth >= depth)
 			{
-			ok=1;
+			if (!verify_return_error)
+				ok=1;
 			verify_error=X509_V_OK;
 			}
 		else
@@ -100,33 +164,38 @@ X509_STORE_CTX *ctx;
 			verify_error=X509_V_ERR_CERT_CHAIN_TOO_LONG;
 			}
 		}
-	switch (ctx->error)
+	switch (err)
 		{
 	case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
-		X509_NAME_oneline(X509_get_issuer_name(ctx->current_cert),buf,256);
-		BIO_printf(bio_err,"issuer= %s\n",buf);
+		BIO_puts(bio_err,"issuer= ");
+		X509_NAME_print_ex(bio_err, X509_get_issuer_name(err_cert),
+					0, XN_FLAG_ONELINE);
+		BIO_puts(bio_err, "\n");
 		break;
 	case X509_V_ERR_CERT_NOT_YET_VALID:
 	case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
 		BIO_printf(bio_err,"notBefore=");
-		ASN1_UTCTIME_print(bio_err,X509_get_notBefore(ctx->current_cert));
+		ASN1_TIME_print(bio_err,X509_get_notBefore(err_cert));
 		BIO_printf(bio_err,"\n");
 		break;
 	case X509_V_ERR_CERT_HAS_EXPIRED:
 	case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
 		BIO_printf(bio_err,"notAfter=");
-		ASN1_UTCTIME_print(bio_err,X509_get_notAfter(ctx->current_cert));
+		ASN1_TIME_print(bio_err,X509_get_notAfter(err_cert));
 		BIO_printf(bio_err,"\n");
 		break;
+	case X509_V_ERR_NO_EXPLICIT_POLICY:
+		policies_print(bio_err, ctx);
+		break;
 		}
+	if (err == X509_V_OK && ok == 2)
+		policies_print(bio_err, ctx);
+
 	BIO_printf(bio_err,"verify return:%d\n",ok);
 	return(ok);
 	}
 
-int set_cert_stuff(ctx, cert_file, key_file)
-SSL_CTX *ctx;
-char *cert_file;
-char *key_file;
+int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file)
 	{
 	if (cert_file != NULL)
 		{
@@ -156,9 +225,13 @@ char *key_file;
 		ssl=SSL_new(ctx);
 		x509=SSL_get_certificate(ssl);
 
-		if (x509 != NULL)
-			EVP_PKEY_copy_parameters(X509_get_pubkey(x509),
-				SSL_get_privatekey(ssl));
+		if (x509 != NULL) {
+			EVP_PKEY *pktmp;
+			pktmp = X509_get_pubkey(x509);
+			EVP_PKEY_copy_parameters(pktmp,
+						SSL_get_privatekey(ssl));
+			EVP_PKEY_free(pktmp);
+		}
 		SSL_free(ssl);
 		*/
 
@@ -177,13 +250,140 @@ char *key_file;
 	return(1);
 	}
 
-long MS_CALLBACK bio_dump_cb(bio,cmd,argp,argi,argl,ret)
-BIO *bio;
-int cmd;
-char *argp;
-int argi;
-long argl;
-long ret;
+int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key,
+							STACK_OF(X509) *chain)
+	{
+	if (cert ==  NULL)
+		return 1;
+	if (SSL_CTX_use_certificate(ctx,cert) <= 0)
+		{
+		BIO_printf(bio_err,"error setting certificate\n");
+		ERR_print_errors(bio_err);
+		return 0;
+		}
+	if (SSL_CTX_use_PrivateKey(ctx,key) <= 0)
+		{
+		BIO_printf(bio_err,"error setting private key\n");
+		ERR_print_errors(bio_err);
+		return 0;
+		}
+
+		
+		/* Now we know that a key and cert have been set against
+		 * the SSL context */
+	if (!SSL_CTX_check_private_key(ctx))
+		{
+		BIO_printf(bio_err,"Private key does not match the certificate public key\n");
+		return 0;
+		}
+	if (chain && !SSL_CTX_set1_chain(ctx, chain))
+		{
+		BIO_printf(bio_err,"error setting certificate chain\n");
+		ERR_print_errors(bio_err);
+		return 0;
+		}
+	return 1;
+	}
+
+typedef struct 
+	{
+	X509 *cert;
+	EVP_PKEY *key;
+	STACK_OF(X509) *chain;
+	struct ssl_excert_st *next;
+	} SSL_EXCERT;
+
+static int set_cert_cb(SSL *ssl, void *arg)
+	{
+	return 1;
+	}
+
+int ssl_print_sigalgs(BIO *out, SSL *s)
+	{
+	int i, nsig;
+	nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
+	if (nsig == 0)
+		return 1;
+
+	BIO_puts(out, "Signature Algorithms: ");
+	for (i = 0; i < nsig; i++)
+		{
+		int hash_nid, sign_nid;
+		unsigned char rhash, rsign;
+		const char *sstr = NULL;
+		SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
+							&rsign, &rhash);
+		if (i)
+			BIO_puts(out, ":");
+		if (sign_nid == EVP_PKEY_RSA)
+			sstr = "RSA";
+		else if(sign_nid == EVP_PKEY_DSA)
+			sstr = "DSA";
+		else if(sign_nid == EVP_PKEY_EC)
+			sstr = "ECDSA";
+		if (sstr)
+			BIO_printf(out,"%s+", sstr);
+		else
+			BIO_printf(out,"0x%02X+", (int)rsign);
+		if (hash_nid != NID_undef)
+			BIO_printf(out, "%s", OBJ_nid2sn(hash_nid));
+		else
+			BIO_printf(out,"0x%02X", (int)rhash);
+		}
+	BIO_puts(out, "\n");
+	return 1;
+	}
+
+int ssl_print_curves(BIO *out, SSL *s)
+	{
+	int i, ncurves, *curves, nid;
+	const char *cname;
+	ncurves = SSL_get1_curves(s, NULL);
+	if (ncurves <= 0)
+		return 1;
+	curves = OPENSSL_malloc(ncurves * sizeof(int));
+	SSL_get1_curves(s, curves);
+
+	BIO_puts(out, "Supported Elliptic Curves: ");
+	for (i = 0; i < ncurves; i++)
+		{
+		if (i)
+			BIO_puts(out, ":");
+		nid = curves[i];
+		/* If unrecognised print out hex version */
+		if (nid & TLSEXT_nid_unknown)
+			BIO_printf(out, "0x%04X", nid & 0xFFFF);
+		else
+			{
+			/* Use NIST name for curve if it exists */
+			cname = EC_curve_nid2nist(nid);
+			if (!cname)
+				cname = OBJ_nid2sn(nid);
+			BIO_printf(out, "%s", cname);
+			}
+		}
+	BIO_puts(out, "\nShared Elliptic curves: ");
+	OPENSSL_free(curves);
+	ncurves = SSL_get_shared_curve(s, -1);
+	for (i = 0; i < ncurves; i++)
+		{
+		if (i)
+			BIO_puts(out, ":");
+		nid = SSL_get_shared_curve(s, i);
+		cname = EC_curve_nid2nist(nid);
+		if (!cname)
+			cname = OBJ_nid2sn(nid);
+		BIO_printf(out, "%s", cname);
+		}
+	if (ncurves == 0)
+		BIO_puts(out, "NONE");
+	BIO_puts(out, "\n");
+	return 1;
+	}
+
+
+long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
+				   int argi, long argl, long ret)
 	{
 	BIO *out;
 
@@ -192,26 +392,23 @@ long ret;
 
 	if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
 		{
-		BIO_printf(out,"read from %08X [%08lX] (%d bytes => %ld (0x%X))\n",
-			bio,argp,argi,ret,ret);
+		BIO_printf(out,"read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
+ 			(void *)bio,argp,(unsigned long)argi,ret,ret);
 		BIO_dump(out,argp,(int)ret);
 		return(ret);
 		}
 	else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
 		{
-		BIO_printf(out,"write to %08X [%08lX] (%d bytes => %ld (0x%X))\n",
-			bio,argp,argi,ret,ret);
+		BIO_printf(out,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
+			(void *)bio,argp,(unsigned long)argi,ret,ret);
 		BIO_dump(out,argp,(int)ret);
 		}
 	return(ret);
 	}
 
-void MS_CALLBACK apps_ssl_info_callback(s,where,ret)
-SSL *s;
-int where;
-int ret;
+void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
 	{
-	char *str;
+	const char *str;
 	int w;
 
 	w=where& ~SSL_ST_MASK;
@@ -245,3 +442,591 @@ int ret;
 		}
 	}
 
+
+void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
+	{
+	BIO *bio = arg;
+	const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
+	
+	str_write_p = write_p ? ">>>" : "<<<";
+
+	switch (version)
+		{
+	case SSL2_VERSION:
+		str_version = "SSL 2.0";
+		break;
+	case SSL3_VERSION:
+		str_version = "SSL 3.0 ";
+		break;
+	case TLS1_VERSION:
+		str_version = "TLS 1.0 ";
+		break;
+	case TLS1_1_VERSION:
+		str_version = "TLS 1.1 ";
+		break;
+	case TLS1_2_VERSION:
+		str_version = "TLS 1.2 ";
+		break;
+	case DTLS1_VERSION:
+		str_version = "DTLS 1.0 ";
+		break;
+	case DTLS1_BAD_VER:
+		str_version = "DTLS 1.0 (bad) ";
+		break;
+	default:
+		str_version = "???";
+		}
+
+	if (version == SSL2_VERSION)
+		{
+		str_details1 = "???";
+
+		if (len > 0)
+			{
+			switch (((const unsigned char*)buf)[0])
+				{
+				case 0:
+					str_details1 = ", ERROR:";
+					str_details2 = " ???";
+					if (len >= 3)
+						{
+						unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
+						
+						switch (err)
+							{
+						case 0x0001:
+							str_details2 = " NO-CIPHER-ERROR";
+							break;
+						case 0x0002:
+							str_details2 = " NO-CERTIFICATE-ERROR";
+							break;
+						case 0x0004:
+							str_details2 = " BAD-CERTIFICATE-ERROR";
+							break;
+						case 0x0006:
+							str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
+							break;
+							}
+						}
+
+					break;
+				case 1:
+					str_details1 = ", CLIENT-HELLO";
+					break;
+				case 2:
+					str_details1 = ", CLIENT-MASTER-KEY";
+					break;
+				case 3:
+					str_details1 = ", CLIENT-FINISHED";
+					break;
+				case 4:
+					str_details1 = ", SERVER-HELLO";
+					break;
+				case 5:
+					str_details1 = ", SERVER-VERIFY";
+					break;
+				case 6:
+					str_details1 = ", SERVER-FINISHED";
+					break;
+				case 7:
+					str_details1 = ", REQUEST-CERTIFICATE";
+					break;
+				case 8:
+					str_details1 = ", CLIENT-CERTIFICATE";
+					break;
+				}
+			}
+		}
+
+	if (version == SSL3_VERSION ||
+	    version == TLS1_VERSION ||
+	    version == DTLS1_VERSION ||
+	    version == DTLS1_BAD_VER)
+		{
+		switch (content_type)
+			{
+		case 20:
+			str_content_type = "ChangeCipherSpec";
+			break;
+		case 21:
+			str_content_type = "Alert";
+			break;
+		case 22:
+			str_content_type = "Handshake";
+			break;
+			}
+
+		if (content_type == 21) /* Alert */
+			{
+			str_details1 = ", ???";
+			
+			if (len == 2)
+				{
+				switch (((const unsigned char*)buf)[0])
+					{
+				case 1:
+					str_details1 = ", warning";
+					break;
+				case 2:
+					str_details1 = ", fatal";
+					break;
+					}
+
+				str_details2 = " ???";
+				switch (((const unsigned char*)buf)[1])
+					{
+				case 0:
+					str_details2 = " close_notify";
+					break;
+				case 10:
+					str_details2 = " unexpected_message";
+					break;
+				case 20:
+					str_details2 = " bad_record_mac";
+					break;
+				case 21:
+					str_details2 = " decryption_failed";
+					break;
+				case 22:
+					str_details2 = " record_overflow";
+					break;
+				case 30:
+					str_details2 = " decompression_failure";
+					break;
+				case 40:
+					str_details2 = " handshake_failure";
+					break;
+				case 42:
+					str_details2 = " bad_certificate";
+					break;
+				case 43:
+					str_details2 = " unsupported_certificate";
+					break;
+				case 44:
+					str_details2 = " certificate_revoked";
+					break;
+				case 45:
+					str_details2 = " certificate_expired";
+					break;
+				case 46:
+					str_details2 = " certificate_unknown";
+					break;
+				case 47:
+					str_details2 = " illegal_parameter";
+					break;
+				case 48:
+					str_details2 = " unknown_ca";
+					break;
+				case 49:
+					str_details2 = " access_denied";
+					break;
+				case 50:
+					str_details2 = " decode_error";
+					break;
+				case 51:
+					str_details2 = " decrypt_error";
+					break;
+				case 60:
+					str_details2 = " export_restriction";
+					break;
+				case 70:
+					str_details2 = " protocol_version";
+					break;
+				case 71:
+					str_details2 = " insufficient_security";
+					break;
+				case 80:
+					str_details2 = " internal_error";
+					break;
+				case 90:
+					str_details2 = " user_canceled";
+					break;
+				case 100:
+					str_details2 = " no_renegotiation";
+					break;
+				case 110:
+					str_details2 = " unsupported_extension";
+					break;
+				case 111:
+					str_details2 = " certificate_unobtainable";
+					break;
+				case 112:
+					str_details2 = " unrecognized_name";
+					break;
+				case 113:
+					str_details2 = " bad_certificate_status_response";
+					break;
+				case 114:
+					str_details2 = " bad_certificate_hash_value";
+					break;
+				case 115:
+					str_details2 = " unknown_psk_identity";
+					break;
+					}
+				}
+			}
+		
+		if (content_type == 22) /* Handshake */
+			{
+			str_details1 = "???";
+
+			if (len > 0)
+				{
+				switch (((const unsigned char*)buf)[0])
+					{
+				case 0:
+					str_details1 = ", HelloRequest";
+					break;
+				case 1:
+					str_details1 = ", ClientHello";
+					break;
+				case 2:
+					str_details1 = ", ServerHello";
+					break;
+				case 3:
+					str_details1 = ", HelloVerifyRequest";
+					break;
+				case 11:
+					str_details1 = ", Certificate";
+					break;
+				case 12:
+					str_details1 = ", ServerKeyExchange";
+					break;
+				case 13:
+					str_details1 = ", CertificateRequest";
+					break;
+				case 14:
+					str_details1 = ", ServerHelloDone";
+					break;
+				case 15:
+					str_details1 = ", CertificateVerify";
+					break;
+				case 16:
+					str_details1 = ", ClientKeyExchange";
+					break;
+				case 20:
+					str_details1 = ", Finished";
+					break;
+					}
+				}
+			}
+
+#ifndef OPENSSL_NO_HEARTBEATS
+		if (content_type == 24) /* Heartbeat */
+			{
+			str_details1 = ", Heartbeat";
+			
+			if (len > 0)
+				{
+				switch (((const unsigned char*)buf)[0])
+					{
+				case 1:
+					str_details1 = ", HeartbeatRequest";
+					break;
+				case 2:
+					str_details1 = ", HeartbeatResponse";
+					break;
+					}
+				}
+			}
+#endif
+		}
+
+	BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version, str_content_type, (unsigned long)len, str_details1, str_details2);
+
+	if (len > 0)
+		{
+		size_t num, i;
+		
+		BIO_printf(bio, "   ");
+		num = len;
+#if 0
+		if (num > 16)
+			num = 16;
+#endif
+		for (i = 0; i < num; i++)
+			{
+			if (i % 16 == 0 && i > 0)
+				BIO_printf(bio, "\n   ");
+			BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
+			}
+		if (i < len)
+			BIO_printf(bio, " ...");
+		BIO_printf(bio, "\n");
+		}
+	(void)BIO_flush(bio);
+	}
+
+void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
+					unsigned char *data, int len,
+					void *arg)
+	{
+	BIO *bio = arg;
+	char *extname;
+
+	switch(type)
+		{
+		case TLSEXT_TYPE_server_name:
+		extname = "server name";
+		break;
+
+		case TLSEXT_TYPE_max_fragment_length:
+		extname = "max fragment length";
+		break;
+
+		case TLSEXT_TYPE_client_certificate_url:
+		extname = "client certificate URL";
+		break;
+
+		case TLSEXT_TYPE_trusted_ca_keys:
+		extname = "trusted CA keys";
+		break;
+
+		case TLSEXT_TYPE_truncated_hmac:
+		extname = "truncated HMAC";
+		break;
+
+		case TLSEXT_TYPE_status_request:
+		extname = "status request";
+		break;
+
+		case TLSEXT_TYPE_user_mapping:
+		extname = "user mapping";
+		break;
+
+		case TLSEXT_TYPE_client_authz:
+		extname = "client authz";
+		break;
+
+		case TLSEXT_TYPE_server_authz:
+		extname = "server authz";
+		break;
+
+		case TLSEXT_TYPE_cert_type:
+		extname = "cert type";
+		break;
+
+		case TLSEXT_TYPE_elliptic_curves:
+		extname = "elliptic curves";
+		break;
+
+		case TLSEXT_TYPE_ec_point_formats:
+		extname = "EC point formats";
+		break;
+
+		case TLSEXT_TYPE_srp:
+		extname = "SRP";
+		break;
+
+		case TLSEXT_TYPE_signature_algorithms:
+		extname = "signature algorithms";
+		break;
+
+		case TLSEXT_TYPE_use_srtp:
+		extname = "use SRTP";
+		break;
+
+		case TLSEXT_TYPE_heartbeat:
+		extname = "heartbeat";
+		break;
+
+		case TLSEXT_TYPE_session_ticket:
+		extname = "session ticket";
+		break;
+
+		case TLSEXT_TYPE_renegotiate: 
+		extname = "renegotiation info";
+		break;
+
+#ifdef TLSEXT_TYPE_opaque_prf_input
+		case TLSEXT_TYPE_opaque_prf_input:
+		extname = "opaque PRF input";
+		break;
+#endif
+#ifdef TLSEXT_TYPE_next_proto_neg
+		case TLSEXT_TYPE_next_proto_neg:
+		extname = "next protocol";
+		break;
+#endif
+
+		default:
+		extname = "unknown";
+		break;
+
+		}
+	
+	BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
+			client_server ? "server": "client",
+			extname, type, len);
+	BIO_dump(bio, (char *)data, len);
+	(void)BIO_flush(bio);
+	}
+
+int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
+	{
+	unsigned char *buffer, result[EVP_MAX_MD_SIZE];
+	unsigned int length, resultlength;
+	union {
+		struct sockaddr sa;
+		struct sockaddr_in s4;
+#if OPENSSL_USE_IPV6
+		struct sockaddr_in6 s6;
+#endif
+	} peer;
+
+	/* Initialize a random secret */
+	if (!cookie_initialized)
+		{
+		if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH))
+			{
+			BIO_printf(bio_err,"error setting random cookie secret\n");
+			return 0;
+			}
+		cookie_initialized = 1;
+		}
+
+	/* Read peer information */
+	(void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
+
+	/* Create buffer with peer's address and port */
+	length = 0;
+	switch (peer.sa.sa_family)
+		{
+	case AF_INET:
+		length += sizeof(struct in_addr);
+		length += sizeof(peer.s4.sin_port);
+		break;
+#if OPENSSL_USE_IPV6
+	case AF_INET6:
+		length += sizeof(struct in6_addr);
+		length += sizeof(peer.s6.sin6_port);
+		break;
+#endif
+	default:
+		OPENSSL_assert(0);
+		break;
+		}
+	buffer = OPENSSL_malloc(length);
+
+	if (buffer == NULL)
+		{
+		BIO_printf(bio_err,"out of memory\n");
+		return 0;
+		}
+
+	switch (peer.sa.sa_family)
+		{
+	case AF_INET:
+		memcpy(buffer,
+		       &peer.s4.sin_port,
+		       sizeof(peer.s4.sin_port));
+		memcpy(buffer + sizeof(peer.s4.sin_port),
+		       &peer.s4.sin_addr,
+		       sizeof(struct in_addr));
+		break;
+#if OPENSSL_USE_IPV6
+	case AF_INET6:
+		memcpy(buffer,
+		       &peer.s6.sin6_port,
+		       sizeof(peer.s6.sin6_port));
+		memcpy(buffer + sizeof(peer.s6.sin6_port),
+		       &peer.s6.sin6_addr,
+		       sizeof(struct in6_addr));
+		break;
+#endif
+	default:
+		OPENSSL_assert(0);
+		break;
+		}
+
+	/* Calculate HMAC of buffer using the secret */
+	HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
+	     buffer, length, result, &resultlength);
+	OPENSSL_free(buffer);
+
+	memcpy(cookie, result, resultlength);
+	*cookie_len = resultlength;
+
+	return 1;
+	}
+
+int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)
+	{
+	unsigned char *buffer, result[EVP_MAX_MD_SIZE];
+	unsigned int length, resultlength;
+	union {
+		struct sockaddr sa;
+		struct sockaddr_in s4;
+#if OPENSSL_USE_IPV6
+		struct sockaddr_in6 s6;
+#endif
+	} peer;
+
+	/* If secret isn't initialized yet, the cookie can't be valid */
+	if (!cookie_initialized)
+		return 0;
+
+	/* Read peer information */
+	(void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
+
+	/* Create buffer with peer's address and port */
+	length = 0;
+	switch (peer.sa.sa_family)
+		{
+	case AF_INET:
+		length += sizeof(struct in_addr);
+		length += sizeof(peer.s4.sin_port);
+		break;
+#if OPENSSL_USE_IPV6
+	case AF_INET6:
+		length += sizeof(struct in6_addr);
+		length += sizeof(peer.s6.sin6_port);
+		break;
+#endif
+	default:
+		OPENSSL_assert(0);
+		break;
+		}
+	buffer = OPENSSL_malloc(length);
+	
+	if (buffer == NULL)
+		{
+		BIO_printf(bio_err,"out of memory\n");
+		return 0;
+		}
+
+	switch (peer.sa.sa_family)
+		{
+	case AF_INET:
+		memcpy(buffer,
+		       &peer.s4.sin_port,
+		       sizeof(peer.s4.sin_port));
+		memcpy(buffer + sizeof(peer.s4.sin_port),
+		       &peer.s4.sin_addr,
+		       sizeof(struct in_addr));
+		break;
+#if OPENSSL_USE_IPV6
+	case AF_INET6:
+		memcpy(buffer,
+		       &peer.s6.sin6_port,
+		       sizeof(peer.s6.sin6_port));
+		memcpy(buffer + sizeof(peer.s6.sin6_port),
+		       &peer.s6.sin6_addr,
+		       sizeof(struct in6_addr));
+		break;
+#endif
+	default:
+		OPENSSL_assert(0);
+		break;
+		}
+
+	/* Calculate HMAC of buffer using the secret */
+	HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
+	     buffer, length, result, &resultlength);
+	OPENSSL_free(buffer);
+
+	if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0)
+		return 1;
+
+	return 0;
+	}