/* 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) 1998-2001 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).

  *

  */

 #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/x509.h>

 #include <openssl/ssl.h>

 #include "s_apps.h"

 int verify_depth=0;

 int verify_error=X509_V_OK;

 int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx)

 	{

 	char buf[256];

 	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);

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

 	BIO_printf(bio_err,"depth=%d %s\n",depth,buf);

 	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;

 			verify_error=X509_V_OK;

 			}

 		else

 			{

 			ok=0;

 			verify_error=X509_V_ERR_CERT_CHAIN_TOO_LONG;

 			}

 		}

 	switch (ctx->error)

 		{

 	case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:

 		X509_NAME_oneline(X509_get_issuer_name(ctx->current_cert),buf,sizeof buf);

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

 		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(ctx->current_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(ctx->current_cert));

 		BIO_printf(bio_err,"\n");

 		break;

 		}

 	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] (%d bytes => %ld (0x%lX))\n",

  			(void *)bio,argp,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] (%d bytes => %ld (0x%lX))\n",

 			(void *)bio,argp,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;

 	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)

 		{

 		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;

 					}

 				}

 			}

 		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 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;

 		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);

 	}