sl@0: /* ssl/ssl_asn1.c */
sl@0: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * This package is an SSL implementation written
sl@0:  * by Eric Young (eay@cryptsoft.com).
sl@0:  * The implementation was written so as to conform with Netscapes SSL.
sl@0:  * 
sl@0:  * This library is free for commercial and non-commercial use as long as
sl@0:  * the following conditions are aheared to.  The following conditions
sl@0:  * apply to all code found in this distribution, be it the RC4, RSA,
sl@0:  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
sl@0:  * included with this distribution is covered by the same copyright terms
sl@0:  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
sl@0:  * 
sl@0:  * Copyright remains Eric Young's, and as such any Copyright notices in
sl@0:  * the code are not to be removed.
sl@0:  * If this package is used in a product, Eric Young should be given attribution
sl@0:  * as the author of the parts of the library used.
sl@0:  * This can be in the form of a textual message at program startup or
sl@0:  * in documentation (online or textual) provided with the package.
sl@0:  * 
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 3. All advertising materials mentioning features or use of this software
sl@0:  *    must display the following acknowledgement:
sl@0:  *    "This product includes cryptographic software written by
sl@0:  *     Eric Young (eay@cryptsoft.com)"
sl@0:  *    The word 'cryptographic' can be left out if the rouines from the library
sl@0:  *    being used are not cryptographic related :-).
sl@0:  * 4. If you include any Windows specific code (or a derivative thereof) from 
sl@0:  *    the apps directory (application code) you must include an acknowledgement:
sl@0:  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
sl@0:  * 
sl@0:  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
sl@0:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
sl@0:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sl@0:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
sl@0:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
sl@0:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
sl@0:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
sl@0:  * SUCH DAMAGE.
sl@0:  * 
sl@0:  * The licence and distribution terms for any publically available version or
sl@0:  * derivative of this code cannot be changed.  i.e. this code cannot simply be
sl@0:  * copied and put under another distribution licence
sl@0:  * [including the GNU Public Licence.]
sl@0:  */
sl@0: 
sl@0: #include <stdio.h>
sl@0: #include <stdlib.h>
sl@0: #include "ssl_locl.h"
sl@0: #include <openssl/asn1_mac.h>
sl@0: #include <openssl/objects.h>
sl@0: #include <openssl/x509.h>
sl@0: 
sl@0: typedef struct ssl_session_asn1_st
sl@0: 	{
sl@0: 	ASN1_INTEGER version;
sl@0: 	ASN1_INTEGER ssl_version;
sl@0: 	ASN1_OCTET_STRING cipher;
sl@0: 	ASN1_OCTET_STRING master_key;
sl@0: 	ASN1_OCTET_STRING session_id;
sl@0: 	ASN1_OCTET_STRING session_id_context;
sl@0: 	ASN1_OCTET_STRING key_arg;
sl@0: #ifndef OPENSSL_NO_KRB5
sl@0:         ASN1_OCTET_STRING krb5_princ;
sl@0: #endif /* OPENSSL_NO_KRB5 */
sl@0: 	ASN1_INTEGER time;
sl@0: 	ASN1_INTEGER timeout;
sl@0: 	ASN1_INTEGER verify_result;
sl@0: 	} SSL_SESSION_ASN1;
sl@0: 
sl@0: EXPORT_C int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
sl@0: 	{
sl@0: #define LSIZE2 (sizeof(long)*2)
sl@0: 	int v1=0,v2=0,v3=0,v4=0,v5=0;
sl@0: 	unsigned char buf[4],ibuf1[LSIZE2],ibuf2[LSIZE2];
sl@0: 	unsigned char ibuf3[LSIZE2],ibuf4[LSIZE2],ibuf5[LSIZE2];
sl@0: 	long l;
sl@0: 	SSL_SESSION_ASN1 a;
sl@0: 	M_ASN1_I2D_vars(in);
sl@0: 
sl@0: 	if ((in == NULL) || ((in->cipher == NULL) && (in->cipher_id == 0)))
sl@0: 		return(0);
sl@0: 
sl@0: 	/* Note that I cheat in the following 2 assignments.  I know
sl@0: 	 * that if the ASN1_INTEGER passed to ASN1_INTEGER_set
sl@0: 	 * is > sizeof(long)+1, the buffer will not be re-OPENSSL_malloc()ed.
sl@0: 	 * This is a bit evil but makes things simple, no dynamic allocation
sl@0: 	 * to clean up :-) */
sl@0: 	a.version.length=LSIZE2;
sl@0: 	a.version.type=V_ASN1_INTEGER;
sl@0: 	a.version.data=ibuf1;
sl@0: 	ASN1_INTEGER_set(&(a.version),SSL_SESSION_ASN1_VERSION);
sl@0: 
sl@0: 	a.ssl_version.length=LSIZE2;
sl@0: 	a.ssl_version.type=V_ASN1_INTEGER;
sl@0: 	a.ssl_version.data=ibuf2;
sl@0: 	ASN1_INTEGER_set(&(a.ssl_version),in->ssl_version);
sl@0: 
sl@0: 	a.cipher.type=V_ASN1_OCTET_STRING;
sl@0: 	a.cipher.data=buf;
sl@0: 
sl@0: 	if (in->cipher == NULL)
sl@0: 		l=in->cipher_id;
sl@0: 	else
sl@0: 		l=in->cipher->id;
sl@0: 	if (in->ssl_version == SSL2_VERSION)
sl@0: 		{
sl@0: 		a.cipher.length=3;
sl@0: 		buf[0]=((unsigned char)(l>>16L))&0xff;
sl@0: 		buf[1]=((unsigned char)(l>> 8L))&0xff;
sl@0: 		buf[2]=((unsigned char)(l     ))&0xff;
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		a.cipher.length=2;
sl@0: 		buf[0]=((unsigned char)(l>>8L))&0xff;
sl@0: 		buf[1]=((unsigned char)(l    ))&0xff;
sl@0: 		}
sl@0: 
sl@0: 	a.master_key.length=in->master_key_length;
sl@0: 	a.master_key.type=V_ASN1_OCTET_STRING;
sl@0: 	a.master_key.data=in->master_key;
sl@0: 
sl@0: 	a.session_id.length=in->session_id_length;
sl@0: 	a.session_id.type=V_ASN1_OCTET_STRING;
sl@0: 	a.session_id.data=in->session_id;
sl@0: 
sl@0: 	a.session_id_context.length=in->sid_ctx_length;
sl@0: 	a.session_id_context.type=V_ASN1_OCTET_STRING;
sl@0: 	a.session_id_context.data=in->sid_ctx;
sl@0: 
sl@0: 	a.key_arg.length=in->key_arg_length;
sl@0: 	a.key_arg.type=V_ASN1_OCTET_STRING;
sl@0: 	a.key_arg.data=in->key_arg;
sl@0: 
sl@0: #ifndef OPENSSL_NO_KRB5
sl@0: 	if (in->krb5_client_princ_len)
sl@0: 		{
sl@0: 		a.krb5_princ.length=in->krb5_client_princ_len;
sl@0: 		a.krb5_princ.type=V_ASN1_OCTET_STRING;
sl@0: 		a.krb5_princ.data=in->krb5_client_princ;
sl@0: 		}
sl@0: #endif /* OPENSSL_NO_KRB5 */
sl@0:  
sl@0: 	if (in->time != 0L)
sl@0: 		{
sl@0: 		a.time.length=LSIZE2;
sl@0: 		a.time.type=V_ASN1_INTEGER;
sl@0: 		a.time.data=ibuf3;
sl@0: 		ASN1_INTEGER_set(&(a.time),in->time);
sl@0: 		}
sl@0: 
sl@0: 	if (in->timeout != 0L)
sl@0: 		{
sl@0: 		a.timeout.length=LSIZE2;
sl@0: 		a.timeout.type=V_ASN1_INTEGER;
sl@0: 		a.timeout.data=ibuf4;
sl@0: 		ASN1_INTEGER_set(&(a.timeout),in->timeout);
sl@0: 		}
sl@0: 
sl@0: 	if (in->verify_result != X509_V_OK)
sl@0: 		{
sl@0: 		a.verify_result.length=LSIZE2;
sl@0: 		a.verify_result.type=V_ASN1_INTEGER;
sl@0: 		a.verify_result.data=ibuf5;
sl@0: 		ASN1_INTEGER_set(&a.verify_result,in->verify_result);
sl@0: 		}
sl@0: 
sl@0: 	M_ASN1_I2D_len(&(a.version),		i2d_ASN1_INTEGER);
sl@0: 	M_ASN1_I2D_len(&(a.ssl_version),	i2d_ASN1_INTEGER);
sl@0: 	M_ASN1_I2D_len(&(a.cipher),		i2d_ASN1_OCTET_STRING);
sl@0: 	M_ASN1_I2D_len(&(a.session_id),		i2d_ASN1_OCTET_STRING);
sl@0: 	M_ASN1_I2D_len(&(a.master_key),		i2d_ASN1_OCTET_STRING);
sl@0: #ifndef OPENSSL_NO_KRB5
sl@0: 	if (in->krb5_client_princ_len)
sl@0:         	M_ASN1_I2D_len(&(a.krb5_princ),	i2d_ASN1_OCTET_STRING);
sl@0: #endif /* OPENSSL_NO_KRB5 */
sl@0: 	if (in->key_arg_length > 0)
sl@0: 		M_ASN1_I2D_len_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING);
sl@0: 	if (in->time != 0L)
sl@0: 		M_ASN1_I2D_len_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
sl@0: 	if (in->timeout != 0L)
sl@0: 		M_ASN1_I2D_len_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
sl@0: 	if (in->peer != NULL)
sl@0: 		M_ASN1_I2D_len_EXP_opt(in->peer,i2d_X509,3,v3);
sl@0: 	M_ASN1_I2D_len_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,v4);
sl@0: 	if (in->verify_result != X509_V_OK)
sl@0: 		M_ASN1_I2D_len_EXP_opt(&(a.verify_result),i2d_ASN1_INTEGER,5,v5);
sl@0: 
sl@0: 	M_ASN1_I2D_seq_total();
sl@0: 
sl@0: 	M_ASN1_I2D_put(&(a.version),		i2d_ASN1_INTEGER);
sl@0: 	M_ASN1_I2D_put(&(a.ssl_version),	i2d_ASN1_INTEGER);
sl@0: 	M_ASN1_I2D_put(&(a.cipher),		i2d_ASN1_OCTET_STRING);
sl@0: 	M_ASN1_I2D_put(&(a.session_id),		i2d_ASN1_OCTET_STRING);
sl@0: 	M_ASN1_I2D_put(&(a.master_key),		i2d_ASN1_OCTET_STRING);
sl@0: #ifndef OPENSSL_NO_KRB5
sl@0: 	if (in->krb5_client_princ_len)
sl@0:         	M_ASN1_I2D_put(&(a.krb5_princ),	i2d_ASN1_OCTET_STRING);
sl@0: #endif /* OPENSSL_NO_KRB5 */
sl@0: 	if (in->key_arg_length > 0)
sl@0: 		M_ASN1_I2D_put_IMP_opt(&(a.key_arg),i2d_ASN1_OCTET_STRING,0);
sl@0: 	if (in->time != 0L)
sl@0: 		M_ASN1_I2D_put_EXP_opt(&(a.time),i2d_ASN1_INTEGER,1,v1);
sl@0: 	if (in->timeout != 0L)
sl@0: 		M_ASN1_I2D_put_EXP_opt(&(a.timeout),i2d_ASN1_INTEGER,2,v2);
sl@0: 	if (in->peer != NULL)
sl@0: 		M_ASN1_I2D_put_EXP_opt(in->peer,i2d_X509,3,v3);
sl@0: 	M_ASN1_I2D_put_EXP_opt(&a.session_id_context,i2d_ASN1_OCTET_STRING,4,
sl@0: 			       v4);
sl@0: 	if (in->verify_result != X509_V_OK)
sl@0: 		M_ASN1_I2D_put_EXP_opt(&a.verify_result,i2d_ASN1_INTEGER,5,v5);
sl@0: 	M_ASN1_I2D_finish();
sl@0: 	}
sl@0: 
sl@0: EXPORT_C SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
sl@0: 	     long length)
sl@0: 	{
sl@0: 	int version,ssl_version=0,i;
sl@0: 	long id;
sl@0: 	ASN1_INTEGER ai,*aip;
sl@0: 	ASN1_OCTET_STRING os,*osp;
sl@0: 	M_ASN1_D2I_vars(a,SSL_SESSION *,SSL_SESSION_new);
sl@0: 
sl@0: 	aip= &ai;
sl@0: 	osp= &os;
sl@0: 
sl@0: 	M_ASN1_D2I_Init();
sl@0: 	M_ASN1_D2I_start_sequence();
sl@0: 
sl@0: 	ai.data=NULL; ai.length=0;
sl@0: 	M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
sl@0: 	version=(int)ASN1_INTEGER_get(aip);
sl@0: 	if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
sl@0: 
sl@0: 	/* we don't care about the version right now :-) */
sl@0: 	M_ASN1_D2I_get_x(ASN1_INTEGER,aip,d2i_ASN1_INTEGER);
sl@0: 	ssl_version=(int)ASN1_INTEGER_get(aip);
sl@0: 	ret->ssl_version=ssl_version;
sl@0: 	if (ai.data != NULL) { OPENSSL_free(ai.data); ai.data=NULL; ai.length=0; }
sl@0: 
sl@0: 	os.data=NULL; os.length=0;
sl@0: 	M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
sl@0: 	if (ssl_version == SSL2_VERSION)
sl@0: 		{
sl@0: 		if (os.length != 3)
sl@0: 			{
sl@0: 			c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
sl@0: 			goto err;
sl@0: 			}
sl@0: 		id=0x02000000L|
sl@0: 			((unsigned long)os.data[0]<<16L)|
sl@0: 			((unsigned long)os.data[1]<< 8L)|
sl@0: 			 (unsigned long)os.data[2];
sl@0: 		}
sl@0: 	else if ((ssl_version>>8) == SSL3_VERSION_MAJOR)
sl@0: 		{
sl@0: 		if (os.length != 2)
sl@0: 			{
sl@0: 			c.error=SSL_R_CIPHER_CODE_WRONG_LENGTH;
sl@0: 			goto err;
sl@0: 			}
sl@0: 		id=0x03000000L|
sl@0: 			((unsigned long)os.data[0]<<8L)|
sl@0: 			 (unsigned long)os.data[1];
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_UNKNOWN_SSL_VERSION);
sl@0: 		return(NULL);
sl@0: 		}
sl@0: 	
sl@0: 	ret->cipher=NULL;
sl@0: 	ret->cipher_id=id;
sl@0: 
sl@0: 	M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
sl@0: 	if ((ssl_version>>8) == SSL3_VERSION_MAJOR)
sl@0: 		i=SSL3_MAX_SSL_SESSION_ID_LENGTH;
sl@0: 	else /* if (ssl_version>>8 == SSL2_VERSION_MAJOR) */
sl@0: 		i=SSL2_MAX_SSL_SESSION_ID_LENGTH;
sl@0: 
sl@0: 	if (os.length > i)
sl@0: 		os.length = i;
sl@0: 	if (os.length > (int)sizeof(ret->session_id)) /* can't happen */
sl@0: 		os.length = sizeof(ret->session_id);
sl@0: 
sl@0: 	ret->session_id_length=os.length;
sl@0: 	OPENSSL_assert(os.length <= (int)sizeof(ret->session_id));
sl@0: 	memcpy(ret->session_id,os.data,os.length);
sl@0: 
sl@0: 	M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
sl@0: 	if (ret->master_key_length > SSL_MAX_MASTER_KEY_LENGTH)
sl@0: 		ret->master_key_length=SSL_MAX_MASTER_KEY_LENGTH;
sl@0: 	else
sl@0: 		ret->master_key_length=os.length;
sl@0: 	memcpy(ret->master_key,os.data,ret->master_key_length);
sl@0: 
sl@0: 	os.length=0;
sl@0: 
sl@0: #ifndef OPENSSL_NO_KRB5
sl@0: 	os.length=0;
sl@0: 	M_ASN1_D2I_get_opt(osp,d2i_ASN1_OCTET_STRING,V_ASN1_OCTET_STRING);
sl@0: 	if (os.data)
sl@0: 		{
sl@0:         	if (os.length > SSL_MAX_KRB5_PRINCIPAL_LENGTH)
sl@0:             		ret->krb5_client_princ_len=0;
sl@0: 		else
sl@0: 			ret->krb5_client_princ_len=os.length;
sl@0: 		memcpy(ret->krb5_client_princ,os.data,ret->krb5_client_princ_len);
sl@0: 		OPENSSL_free(os.data);
sl@0: 		os.data = NULL;
sl@0: 		os.length = 0;
sl@0: 		}
sl@0: 	else
sl@0: 		ret->krb5_client_princ_len=0;
sl@0: #endif /* OPENSSL_NO_KRB5 */
sl@0: 
sl@0: 	M_ASN1_D2I_get_IMP_opt(osp,d2i_ASN1_OCTET_STRING,0,V_ASN1_OCTET_STRING);
sl@0: 	if (os.length > SSL_MAX_KEY_ARG_LENGTH)
sl@0: 		ret->key_arg_length=SSL_MAX_KEY_ARG_LENGTH;
sl@0: 	else
sl@0: 		ret->key_arg_length=os.length;
sl@0: 	memcpy(ret->key_arg,os.data,ret->key_arg_length);
sl@0: 	if (os.data != NULL) OPENSSL_free(os.data);
sl@0: 
sl@0: 	ai.length=0;
sl@0: 	M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,1);
sl@0: 	if (ai.data != NULL)
sl@0: 		{
sl@0: 		ret->time=ASN1_INTEGER_get(aip);
sl@0: 		OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
sl@0: 		}
sl@0: 	else
sl@0: 		ret->time=(unsigned long)time(NULL);
sl@0: 
sl@0: 	ai.length=0;
sl@0: 	M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,2);
sl@0: 	if (ai.data != NULL)
sl@0: 		{
sl@0: 		ret->timeout=ASN1_INTEGER_get(aip);
sl@0: 		OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
sl@0: 		}
sl@0: 	else
sl@0: 		ret->timeout=3;
sl@0: 
sl@0: 	if (ret->peer != NULL)
sl@0: 		{
sl@0: 		X509_free(ret->peer);
sl@0: 		ret->peer=NULL;
sl@0: 		}
sl@0: 	M_ASN1_D2I_get_EXP_opt(ret->peer,d2i_X509,3);
sl@0: 
sl@0: 	os.length=0;
sl@0: 	os.data=NULL;
sl@0: 	M_ASN1_D2I_get_EXP_opt(osp,d2i_ASN1_OCTET_STRING,4);
sl@0: 
sl@0: 	if(os.data != NULL)
sl@0: 	    {
sl@0: 	    if (os.length > SSL_MAX_SID_CTX_LENGTH)
sl@0: 		{
sl@0: 		ret->sid_ctx_length=os.length;
sl@0: 		SSLerr(SSL_F_D2I_SSL_SESSION,SSL_R_BAD_LENGTH);
sl@0: 		}
sl@0: 	    else
sl@0: 		{
sl@0: 		ret->sid_ctx_length=os.length;
sl@0: 		memcpy(ret->sid_ctx,os.data,os.length);
sl@0: 		}
sl@0: 	    OPENSSL_free(os.data); os.data=NULL; os.length=0;
sl@0: 	    }
sl@0: 	else
sl@0: 	    ret->sid_ctx_length=0;
sl@0: 
sl@0: 	ai.length=0;
sl@0: 	M_ASN1_D2I_get_EXP_opt(aip,d2i_ASN1_INTEGER,5);
sl@0: 	if (ai.data != NULL)
sl@0: 		{
sl@0: 		ret->verify_result=ASN1_INTEGER_get(aip);
sl@0: 		OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
sl@0: 		}
sl@0: 	else
sl@0: 		ret->verify_result=X509_V_OK;
sl@0: 
sl@0: 
sl@0: 	M_ASN1_D2I_Finish(a,SSL_SESSION_free,SSL_F_D2I_SSL_SESSION);
sl@0: 	}