crypto/external/bsd/heimdal/dist/kdc/windc.c

   1 /*      $NetBSD: windc.c,v 1.1.1.2 2014/04/24 12:45:27 pettai Exp $     */
   2
   3 /*
   4  * Copyright (c) 2007 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 "kdc_locl.h"
  37
  38 static krb5plugin_windc_ftable *windcft;
  39 static void *windcctx;
  40
  41 /*
  42  * Pick the first WINDC module that we find.
  43  */
  44
  45 krb5_error_code
  46 krb5_kdc_windc_init(krb5_context context)
  47 {
  48     struct krb5_plugin *list = NULL, *e;
  49     krb5_error_code ret;
  50
  51     ret = _krb5_plugin_find(context, PLUGIN_TYPE_DATA, "windc", &list);
  52     if(ret != 0 || list == NULL)
  53         return 0;
  54
  55     for (e = list; e != NULL; e = _krb5_plugin_get_next(e)) {
  56
  57         windcft = _krb5_plugin_get_symbol(e);
  58         if (windcft->minor_version < KRB5_WINDC_PLUGIN_MINOR)
  59             continue;
  60
  61         (*windcft->init)(context, &windcctx);
  62         break;
  63     }
  64     _krb5_plugin_free(list);
  65     if (e == NULL) {
  66         krb5_set_error_message(context, ENOENT, "Did not find any WINDC plugin");
  67         windcft = NULL;
  68         return ENOENT;
  69     }
  70
  71     return 0;
  72 }
  73
  74
  75 krb5_error_code
  76 _kdc_pac_generate(krb5_context context,
  77                   hdb_entry_ex *client,
  78                   krb5_pac *pac)
  79 {
  80     *pac = NULL;
  81     if (windcft == NULL)
  82         return 0;
  83     return (windcft->pac_generate)(windcctx, context, client, pac);
  84 }
  85
  86 krb5_error_code
  87 _kdc_pac_verify(krb5_context context,
  88                 const krb5_principal client_principal,
  89                 const krb5_principal delegated_proxy_principal,
  90                 hdb_entry_ex *client,
  91                 hdb_entry_ex *server,
  92                 hdb_entry_ex *krbtgt,
  93                 krb5_pac *pac,
  94                 int *verified)
  95 {
  96     krb5_error_code ret;
  97
  98     if (windcft == NULL)
  99         return 0;
 100
 101     ret = windcft->pac_verify(windcctx, context,
 102                               client_principal,
 103                               delegated_proxy_principal,
 104                               client, server, krbtgt, pac);
 105     if (ret == 0)
 106         *verified = 1;
 107     return ret;
 108 }
 109
 110 krb5_error_code
 111 _kdc_check_access(krb5_context context,
 112                   krb5_kdc_configuration *config,
 113                   hdb_entry_ex *client_ex, const char *client_name,
 114                   hdb_entry_ex *server_ex, const char *server_name,
 115                   KDC_REQ *req,
 116                   krb5_data *e_data)
 117 {
 118     if (windcft == NULL)
 119             return kdc_check_flags(context, config,
 120                                    client_ex, client_name,
 121                                    server_ex, server_name,
 122                                    req->msg_type == krb_as_req);
 123
 124     return (windcft->client_access)(windcctx,
 125                                     context, config,
 126                                     client_ex, client_name,
 127                                     server_ex, server_name,
 128                                     req, e_data);
 129 }