crypto/external/bsd/heimdal/dist/lib/gssapi/krb5/compat.c

   1 /*      $NetBSD: compat.c,v 1.1.1.2 2014/04/24 12:45:29 pettai Exp $    */
   2
   3 /*
   4  * Copyright (c) 2003 - 2005 Kungliga Tekniska Högskolan
   5  * (Royal Institute of Technology, Stockholm, Sweden).
   6  * 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 the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * 3. Neither the name of the Institute nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include "gsskrb5_locl.h"
  37
  38 static krb5_error_code
  39 check_compat(OM_uint32 *minor_status,
  40              krb5_context context, krb5_const_principal name,
  41              const char *option, krb5_boolean *compat,
  42              krb5_boolean match_val)
  43 {
  44     krb5_error_code ret = 0;
  45     char **p, **q;
  46     krb5_principal match;
  47
  48
  49     p = krb5_config_get_strings(context, NULL, "gssapi",
  50                                 option, NULL);
  51     if(p == NULL)
  52         return 0;
  53
  54     match = NULL;
  55     for(q = p; *q; q++) {
  56         ret = krb5_parse_name(context, *q, &match);
  57         if (ret)
  58             break;
  59
  60         if (krb5_principal_match(context, name, match)) {
  61             *compat = match_val;
  62             break;
  63         }
  64
  65         krb5_free_principal(context, match);
  66         match = NULL;
  67     }
  68     if (match)
  69         krb5_free_principal(context, match);
  70     krb5_config_free_strings(p);
  71
  72     if (ret) {
  73         if (minor_status)
  74             *minor_status = ret;
  75         return GSS_S_FAILURE;
  76     }
  77
  78     return 0;
  79 }
  80
  81 /*
  82  * ctx->ctx_id_mutex is assumed to be locked
  83  */
  84
  85 OM_uint32
  86 _gss_DES3_get_mic_compat(OM_uint32 *minor_status,
  87                          gsskrb5_ctx ctx,
  88                          krb5_context context)
  89 {
  90     krb5_boolean use_compat = FALSE;
  91     OM_uint32 ret;
  92
  93     if ((ctx->more_flags & COMPAT_OLD_DES3_SELECTED) == 0) {
  94         ret = check_compat(minor_status, context, ctx->target,
  95                            "broken_des3_mic", &use_compat, TRUE);
  96         if (ret)
  97             return ret;
  98         ret = check_compat(minor_status, context, ctx->target,
  99                            "correct_des3_mic", &use_compat, FALSE);
 100         if (ret)
 101             return ret;
 102
 103         if (use_compat)
 104             ctx->more_flags |= COMPAT_OLD_DES3;
 105         ctx->more_flags |= COMPAT_OLD_DES3_SELECTED;
 106     }
 107     return 0;
 108 }
 109
 110 #if 0
 111 OM_uint32
 112 gss_krb5_compat_des3_mic(OM_uint32 *minor_status, gss_ctx_id_t ctx, int on)
 113 {
 114     *minor_status = 0;
 115
 116     HEIMDAL_MUTEX_lock(&ctx->ctx_id_mutex);
 117     if (on) {
 118         ctx->more_flags |= COMPAT_OLD_DES3;
 119     } else {
 120         ctx->more_flags &= ~COMPAT_OLD_DES3;
 121     }
 122     ctx->more_flags |= COMPAT_OLD_DES3_SELECTED;
 123     HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex);
 124
 125     return 0;
 126 }
 127 #endif