1/* ssl/kssl.h -*- mode: C; c-file-style: "eay" -*- */ 2/* Written by Vern Staats <staatsvr@asc.hpc.mil> for the OpenSSL project 2000. 3 * project 2000. 4 */ 5/* ==================================================================== 6 * Copyright (c) 2000 The OpenSSL Project. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 20 * 3. All advertising materials mentioning features or use of this 21 * software must display the following acknowledgment: 22 * "This product includes software developed by the OpenSSL Project 23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 24 * 25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 26 * endorse or promote products derived from this software without 27 * prior written permission. For written permission, please contact 28 * licensing@OpenSSL.org. 29 * 30 * 5. Products derived from this software may not be called "OpenSSL" 31 * nor may "OpenSSL" appear in their names without prior written 32 * permission of the OpenSSL Project. 33 * 34 * 6. Redistributions of any form whatsoever must retain the following 35 * acknowledgment: 36 * "This product includes software developed by the OpenSSL Project 37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 38 * 39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 50 * OF THE POSSIBILITY OF SUCH DAMAGE. 51 * ==================================================================== 52 * 53 * This product includes cryptographic software written by Eric Young 54 * (eay@cryptsoft.com). This product includes software written by Tim 55 * Hudson (tjh@cryptsoft.com). 56 * 57 */ 58 59/* 60** 19990701 VRS Started. 61*/ 62 63#ifndef KSSL_H 64#define KSSL_H 65 66#include <openssl/opensslconf.h> 67 68#ifndef OPENSSL_NO_KRB5 69 70#include <stdio.h> 71#include <ctype.h> 72#include <krb5.h> 73 74#ifdef __cplusplus 75extern "C" { 76#endif 77 78/* 79** Depending on which KRB5 implementation used, some types from 80** the other may be missing. Resolve that here and now 81*/ 82#ifdef KRB5_HEIMDAL 83typedef unsigned char krb5_octet; 84#define FAR 85#endif 86 87/* Uncomment this to debug kssl problems or 88** to trace usage of the Kerberos session key 89** 90** #define KSSL_DEBUG 91*/ 92 93#ifndef KRB5SVC 94#define KRB5SVC "host" 95#endif 96 97#ifndef KRB5KEYTAB 98#define KRB5KEYTAB "/etc/krb5.keytab" 99#endif 100 101#ifndef KRB5SENDAUTH 102#define KRB5SENDAUTH 1 103#endif 104 105#ifndef KRB5CHECKAUTH 106#define KRB5CHECKAUTH 1 107#endif 108 109#ifndef KSSL_CLOCKSKEW 110#define KSSL_CLOCKSKEW 300; 111#endif 112 113#define KSSL_ERR_MAX 255 114typedef struct kssl_err_st { 115 int reason; 116 char text[KSSL_ERR_MAX+1]; 117 } KSSL_ERR; 118 119 120/* Context for passing 121** (1) Kerberos session key to SSL, and 122** (2) Config data between application and SSL lib 123*/ 124typedef struct kssl_ctx_st 125 { 126 /* used by: disposition: */ 127 char *service_name; /* C,S default ok (kssl) */ 128 char *service_host; /* C input, REQUIRED */ 129 char *client_princ; /* S output from krb5 ticket */ 130 char *keytab_file; /* S NULL (/etc/krb5.keytab) */ 131 char *cred_cache; /* C NULL (default) */ 132 krb5_enctype enctype; 133 int length; 134 krb5_octet FAR *key; 135 } KSSL_CTX; 136 137#define KSSL_CLIENT 1 138#define KSSL_SERVER 2 139#define KSSL_SERVICE 3 140#define KSSL_KEYTAB 4 141 142#define KSSL_CTX_OK 0 143#define KSSL_CTX_ERR 1 144#define KSSL_NOMEM 2 145 146/* Public (for use by applications that use OpenSSL with Kerberos 5 support */ 147krb5_error_code kssl_ctx_setstring(KSSL_CTX *kssl_ctx, int which, char *text); 148KSSL_CTX *kssl_ctx_new(void); 149KSSL_CTX *kssl_ctx_free(KSSL_CTX *kssl_ctx); 150void kssl_ctx_show(KSSL_CTX *kssl_ctx); 151krb5_error_code kssl_ctx_setprinc(KSSL_CTX *kssl_ctx, int which, 152 krb5_data *realm, krb5_data *entity); 153krb5_error_code kssl_cget_tkt(KSSL_CTX *kssl_ctx, krb5_data **enc_tktp, 154 krb5_data *authenp, KSSL_ERR *kssl_err); 155krb5_error_code kssl_sget_tkt(KSSL_CTX *kssl_ctx, krb5_data *indata, 156 krb5_ticket_times *ttimes, KSSL_ERR *kssl_err); 157krb5_error_code kssl_ctx_setkey(KSSL_CTX *kssl_ctx, krb5_keyblock *session); 158void kssl_err_set(KSSL_ERR *kssl_err, int reason, char *text); 159void kssl_krb5_free_data_contents(krb5_context context, krb5_data *data); 160krb5_error_code kssl_build_principal_2(krb5_context context, 161 krb5_principal *princ, int rlen, const char *realm, 162 int slen, const char *svc, int hlen, const char *host); 163krb5_error_code kssl_validate_times(krb5_timestamp atime, 164 krb5_ticket_times *ttimes); 165krb5_error_code kssl_check_authent(KSSL_CTX *kssl_ctx, krb5_data *authentp, 166 krb5_timestamp *atimep, KSSL_ERR *kssl_err); 167unsigned char *kssl_skip_confound(krb5_enctype enctype, unsigned char *authn); 168 169#ifdef __cplusplus 170} 171#endif 172#endif /* OPENSSL_NO_KRB5 */ 173#endif /* KSSL_H */ 174