crypto/external/bsd/openssl/dist/ssl/kssl.h

   1 /* ssl/kssl.h -*- mode: C; c-file-style: "eay" -*- */
   2 /*
   3  * Written by Vern Staats <staatsvr@asc.hpc.mil> for the OpenSSL project
   4  * 2000. project 2000.
   5  */
   6 /* ====================================================================
   7  * Copyright (c) 2000 The OpenSSL Project.  All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  *
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in
  18  *    the documentation and/or other materials provided with the
  19  *    distribution.
  20  *
  21  * 3. All advertising materials mentioning features or use of this
  22  *    software must display the following acknowledgment:
  23  *    "This product includes software developed by the OpenSSL Project
  24  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  25  *
  26  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  27  *    endorse or promote products derived from this software without
  28  *    prior written permission. For written permission, please contact
  29  *    licensing@OpenSSL.org.
  30  *
  31  * 5. Products derived from this software may not be called "OpenSSL"
  32  *    nor may "OpenSSL" appear in their names without prior written
  33  *    permission of the OpenSSL Project.
  34  *
  35  * 6. Redistributions of any form whatsoever must retain the following
  36  *    acknowledgment:
  37  *    "This product includes software developed by the OpenSSL Project
  38  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  41  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  43  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  44  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  47  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  49  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  50  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  51  * OF THE POSSIBILITY OF SUCH DAMAGE.
  52  * ====================================================================
  53  *
  54  * This product includes cryptographic software written by Eric Young
  55  * (eay@cryptsoft.com).  This product includes software written by Tim
  56  * Hudson (tjh@cryptsoft.com).
  57  *
  58  */
  59
  60 /*
  61  **      19990701        VRS     Started.
  62  */
  63
  64 #ifndef KSSL_H
  65 # define KSSL_H
  66
  67 # include <openssl/opensslconf.h>
  68
  69 # ifndef OPENSSL_NO_KRB5
  70
  71 #  include <stdio.h>
  72 #  include <ctype.h>
  73 #  include <krb5.h>
  74 #  ifdef OPENSSL_SYS_WIN32
  75 /*
  76  * These can sometimes get redefined indirectly by krb5 header files after
  77  * they get undefed in ossl_typ.h
  78  */
  79 #   undef X509_NAME
  80 #   undef X509_EXTENSIONS
  81 #   undef OCSP_REQUEST
  82 #   undef OCSP_RESPONSE
  83 #  endif
  84
  85 #ifdef  __cplusplus
  86 extern "C" {
  87 #endif
  88
  89 /*
  90  *      Depending on which KRB5 implementation used, some types from
  91  *      the other may be missing.  Resolve that here and now
  92  */
  93 #  ifdef KRB5_HEIMDAL
  94 typedef unsigned char krb5_octet;
  95 #   define FAR
  96 #  else
  97
  98 #   ifndef FAR
  99 #    define FAR
 100 #   endif
 101
 102 #  endif
 103
 104 /*-
 105  *      Uncomment this to debug kssl problems or
 106  *      to trace usage of the Kerberos session key
 107  *
 108  *      #define         KSSL_DEBUG
 109  */
 110
 111 #  ifndef KRB5SVC
 112 #   define KRB5SVC "host"
 113 #  endif
 114
 115 #  ifndef KRB5KEYTAB
 116 #   define KRB5KEYTAB      "/etc/krb5.keytab"
 117 #  endif
 118
 119 #  ifndef KRB5SENDAUTH
 120 #   define KRB5SENDAUTH    1
 121 #  endif
 122
 123 #  ifndef KRB5CHECKAUTH
 124 #   define KRB5CHECKAUTH   1
 125 #  endif
 126
 127 #  ifndef KSSL_CLOCKSKEW
 128 #   define KSSL_CLOCKSKEW  300;
 129 #  endif
 130
 131 #  define KSSL_ERR_MAX    255
 132 typedef struct kssl_err_st {
 133     int reason;
 134     char text[KSSL_ERR_MAX + 1];
 135 } KSSL_ERR;
 136
 137 /*-     Context for passing
 138  *              (1) Kerberos session key to SSL, and
 139  *              (2)     Config data between application and SSL lib
 140  */
 141 typedef struct kssl_ctx_st {
 142     /*      used by:    disposition:            */
 143     char *service_name;         /* C,S default ok (kssl) */
 144     char *service_host;         /* C input, REQUIRED */
 145     char *client_princ;         /* S output from krb5 ticket */
 146     char *keytab_file;          /* S NULL (/etc/krb5.keytab) */
 147     char *cred_cache;           /* C NULL (default) */
 148     krb5_enctype enctype;
 149     int length;
 150     krb5_octet FAR *key;
 151 } KSSL_CTX;
 152
 153 #  define KSSL_CLIENT     1
 154 #  define KSSL_SERVER     2
 155 #  define KSSL_SERVICE    3
 156 #  define KSSL_KEYTAB     4
 157
 158 #  define KSSL_CTX_OK     0
 159 #  define KSSL_CTX_ERR    1
 160 #  define KSSL_NOMEM      2
 161
 162 /* Public (for use by applications that use OpenSSL with Kerberos 5 support */
 163 krb5_error_code kssl_ctx_setstring(KSSL_CTX *kssl_ctx, int which, char *text);
 164 KSSL_CTX *kssl_ctx_new(void);
 165 KSSL_CTX *kssl_ctx_free(KSSL_CTX *kssl_ctx);
 166 void kssl_ctx_show(KSSL_CTX *kssl_ctx);
 167 krb5_error_code kssl_ctx_setprinc(KSSL_CTX *kssl_ctx, int which,
 168                                   krb5_data *realm, krb5_data *entity,
 169                                   int nentities);
 170 krb5_error_code kssl_cget_tkt(KSSL_CTX *kssl_ctx, krb5_data **enc_tktp,
 171                               krb5_data *authenp, KSSL_ERR *kssl_err);
 172 krb5_error_code kssl_sget_tkt(KSSL_CTX *kssl_ctx, krb5_data *indata,
 173                               krb5_ticket_times *ttimes, KSSL_ERR *kssl_err);
 174 krb5_error_code kssl_ctx_setkey(KSSL_CTX *kssl_ctx, krb5_keyblock *session);
 175 void kssl_err_set(KSSL_ERR *kssl_err, int reason, char *text);
 176 void kssl_krb5_free_data_contents(krb5_context context, krb5_data *data);
 177 krb5_error_code kssl_build_principal_2(krb5_context context,
 178                                        krb5_principal *princ, int rlen,
 179                                        const char *realm, int slen,
 180                                        const char *svc, int hlen,
 181                                        const char *host);
 182 krb5_error_code kssl_validate_times(krb5_timestamp atime,
 183                                     krb5_ticket_times *ttimes);
 184 krb5_error_code kssl_check_authent(KSSL_CTX *kssl_ctx, krb5_data *authentp,
 185                                    krb5_timestamp *atimep,
 186                                    KSSL_ERR *kssl_err);
 187 unsigned char *kssl_skip_confound(krb5_enctype enctype, unsigned char *authn);
 188
 189 void SSL_set0_kssl_ctx(SSL *s, KSSL_CTX *kctx);
 190 KSSL_CTX *SSL_get0_kssl_ctx(SSL *s);
 191 char *kssl_ctx_get0_client_princ(KSSL_CTX *kctx);
 192
 193 #ifdef  __cplusplus
 194 }
 195 #endif
 196 # endif                         /* OPENSSL_NO_KRB5 */
 197 #endif                          /* KSSL_H */