Initial import

1 files changed, 862 insertions, 0 deletions

diff --git a/openssl/apps/s_cb.c b/openssl/apps/s_cb.c
new file mode 100644
index 00000000..c4f55122
--- /dev/null
+++ b/openssl/apps/s_cb.c
@@ -0,0 +1,862 @@
+/* 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.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#define USE_SOCKETS
+#define NON_MAIN
+#include "apps.h"
+#undef NON_MAIN
+#undef USE_SOCKETS
+#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(int ok, X509_STORE_CTX *ctx)
+	{
+	X509 *err_cert;
+	int err,depth;
+
+	err_cert=X509_STORE_CTX_get_current_cert(ctx);
+	err=	X509_STORE_CTX_get_error(ctx);
+	depth=	X509_STORE_CTX_get_error_depth(ctx);
+
+	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)
+			{
+			if (!verify_return_error)
+				ok=1;
+			verify_error=X509_V_OK;
+			}
+		else
+			{
+			ok=0;
+			verify_error=X509_V_ERR_CERT_CHAIN_TOO_LONG;
+			}
+		}
+	switch (err)
+		{
+	case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
+		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_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_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(SSL_CTX *ctx, char *cert_file, char *key_file)
+	{
+	if (cert_file != NULL)
+		{
+		/*
+		SSL *ssl;
+		X509 *x509;
+		*/
+
+		if (SSL_CTX_use_certificate_file(ctx,cert_file,
+			SSL_FILETYPE_PEM) <= 0)
+			{
+			BIO_printf(bio_err,"unable to get certificate from '%s'\n",cert_file);
+			ERR_print_errors(bio_err);
+			return(0);
+			}
+		if (key_file == NULL) key_file=cert_file;
+		if (SSL_CTX_use_PrivateKey_file(ctx,key_file,
+			SSL_FILETYPE_PEM) <= 0)
+			{
+			BIO_printf(bio_err,"unable to get private key from '%s'\n",key_file);
+			ERR_print_errors(bio_err);
+			return(0);
+			}
+
+		/*
+		In theory this is no longer needed 
+		ssl=SSL_new(ctx);
+		x509=SSL_get_certificate(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);
+		*/
+
+		/* If we are using DSA, we can copy the parameters from
+		 * the private key */
+		
+		
+		/* 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);
+			}
+		}
+	return(1);
+	}
+
+int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key)
+	{
+	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;
+		}
+	return 1;
+	}
+
+long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
+				   int argi, long argl, long ret)
+	{
+	BIO *out;
+
+	out=(BIO *)BIO_get_callback_arg(bio);
+	if (out == NULL) return(ret);
+
+	if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
+		{
+		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 %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(const SSL *s, int where, int ret)
+	{
+	const char *str;
+	int w;
+
+	w=where& ~SSL_ST_MASK;
+
+	if (w & SSL_ST_CONNECT) str="SSL_connect";
+	else if (w & SSL_ST_ACCEPT) str="SSL_accept";
+	else str="undefined";
+
+	if (where & SSL_CB_LOOP)
+		{
+		BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
+		}
+	else if (where & SSL_CB_ALERT)
+		{
+		str=(where & SSL_CB_READ)?"read":"write";
+		BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
+			str,
+			SSL_alert_type_string_long(ret),
+			SSL_alert_desc_string_long(ret));
+		}
+	else if (where & SSL_CB_EXIT)
+		{
+		if (ret == 0)
+			BIO_printf(bio_err,"%s:failed in %s\n",
+				str,SSL_state_string_long(s));
+		else if (ret < 0)
+			{
+			BIO_printf(bio_err,"%s:error in %s\n",
+				str,SSL_state_string_long(s));
+			}
+		}
+	}
+
+
+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 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;
+					}
+				}
+			}
+		
+		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;
+					}
+				}
+			}
+		}
+
+	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_elliptic_curves:
+		extname = "elliptic curves";
+		break;
+
+		case TLSEXT_TYPE_ec_point_formats:
+		extname = "EC point formats";
+		break;
+
+		case TLSEXT_TYPE_session_ticket:
+		extname = "server ticket";
+		break;
+
+		case TLSEXT_TYPE_renegotiate:
+		extname = "renegotiate";
+		break;
+
+#ifdef TLSEXT_TYPE_opaque_prf_input
+		case TLSEXT_TYPE_opaque_prf_input:
+		extname = "opaque PRF input";
+		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;
+	}