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/* ssl/kssl.h -*- mode: C; c-file-style: "eay" -*- */
/* Written by Vern Staats <staatsvr@asc.hpc.mil> for the OpenSSL project 2000.
* project 2000.
*/
/* ====================================================================
* Copyright (c) 2000 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
* licensing@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).
*
*/
/*
** 19990701 VRS Started.
*/
#ifndef KSSL_H
#define KSSL_H
#include <openssl/opensslconf.h>
#ifndef OPENSSL_NO_KRB5
#include <stdio.h>
#include <ctype.h>
#include <krb5.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
** Depending on which KRB5 implementation used, some types from
** the other may be missing. Resolve that here and now
*/
#ifdef KRB5_HEIMDAL
typedef unsigned char krb5_octet;
#define FAR
#else
#ifndef FAR
#define FAR
#endif
#endif
/* Uncomment this to debug kssl problems or
** to trace usage of the Kerberos session key
**
** #define KSSL_DEBUG
*/
#ifndef KRB5SVC
#define KRB5SVC "host"
#endif
#ifndef KRB5KEYTAB
#define KRB5KEYTAB "/etc/krb5.keytab"
#endif
#ifndef KRB5SENDAUTH
#define KRB5SENDAUTH 1
#endif
#ifndef KRB5CHECKAUTH
#define KRB5CHECKAUTH 1
#endif
#ifndef KSSL_CLOCKSKEW
#define KSSL_CLOCKSKEW 300;
#endif
#define KSSL_ERR_MAX 255
typedef struct kssl_err_st {
int reason;
char text[KSSL_ERR_MAX+1];
} KSSL_ERR;
/* Context for passing
** (1) Kerberos session key to SSL, and
** (2) Config data between application and SSL lib
*/
typedef struct kssl_ctx_st
{
/* used by: disposition: */
char *service_name; /* C,S default ok (kssl) */
char *service_host; /* C input, REQUIRED */
char *client_princ; /* S output from krb5 ticket */
char *keytab_file; /* S NULL (/etc/krb5.keytab) */
char *cred_cache; /* C NULL (default) */
krb5_enctype enctype;
int length;
krb5_octet FAR *key;
} KSSL_CTX;
#define KSSL_CLIENT 1
#define KSSL_SERVER 2
#define KSSL_SERVICE 3
#define KSSL_KEYTAB 4
#define KSSL_CTX_OK 0
#define KSSL_CTX_ERR 1
#define KSSL_NOMEM 2
/* Public (for use by applications that use OpenSSL with Kerberos 5 support */
krb5_error_code kssl_ctx_setstring(KSSL_CTX *kssl_ctx, int which, char *text);
KSSL_CTX *kssl_ctx_new(void);
KSSL_CTX *kssl_ctx_free(KSSL_CTX *kssl_ctx);
void kssl_ctx_show(KSSL_CTX *kssl_ctx);
krb5_error_code kssl_ctx_setprinc(KSSL_CTX *kssl_ctx, int which,
krb5_data *realm, krb5_data *entity, int nentities);
krb5_error_code kssl_cget_tkt(KSSL_CTX *kssl_ctx, krb5_data **enc_tktp,
krb5_data *authenp, KSSL_ERR *kssl_err);
krb5_error_code kssl_sget_tkt(KSSL_CTX *kssl_ctx, krb5_data *indata,
krb5_ticket_times *ttimes, KSSL_ERR *kssl_err);
krb5_error_code kssl_ctx_setkey(KSSL_CTX *kssl_ctx, krb5_keyblock *session);
void kssl_err_set(KSSL_ERR *kssl_err, int reason, char *text);
void kssl_krb5_free_data_contents(krb5_context context, krb5_data *data);
krb5_error_code kssl_build_principal_2(krb5_context context,
krb5_principal *princ, int rlen, const char *realm,
int slen, const char *svc, int hlen, const char *host);
krb5_error_code kssl_validate_times(krb5_timestamp atime,
krb5_ticket_times *ttimes);
krb5_error_code kssl_check_authent(KSSL_CTX *kssl_ctx, krb5_data *authentp,
krb5_timestamp *atimep, KSSL_ERR *kssl_err);
unsigned char *kssl_skip_confound(krb5_enctype enctype, unsigned char *authn);
void SSL_set0_kssl_ctx(SSL *s, KSSL_CTX *kctx);
KSSL_CTX * SSL_get0_kssl_ctx(SSL *s);
char *kssl_ctx_get0_client_princ(KSSL_CTX *kctx);
#ifdef __cplusplus
}
#endif
#endif /* OPENSSL_NO_KRB5 */
#endif /* KSSL_H */