Line data    Source code

       1             : /*
       2             :  * Copyright (c) 2007 Kungliga Tekniska Högskolan
       3             :  * (Royal Institute of Technology, Stockholm, Sweden).
       4             :  * All rights reserved.
       5             :  *
       6             :  * Redistribution and use in source and binary forms, with or without
       7             :  * modification, are permitted provided that the following conditions
       8             :  * are met:
       9             :  *
      10             :  * 1. Redistributions of source code must retain the above copyright
      11             :  *    notice, this list of conditions and the following disclaimer.
      12             :  *
      13             :  * 2. Redistributions in binary form must reproduce the above copyright
      14             :  *    notice, this list of conditions and the following disclaimer in the
      15             :  *    documentation and/or other materials provided with the distribution.
      16             :  *
      17             :  * 3. Neither the name of the Institute nor the names of its contributors
      18             :  *    may be used to endorse or promote products derived from this software
      19             :  *    without specific prior written permission.
      20             :  *
      21             :  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
      22             :  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
      23             :  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
      24             :  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
      25             :  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
      26             :  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
      27             :  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
      28             :  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
      29             :  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
      30             :  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
      31             :  * SUCH DAMAGE.
      32             :  */
      33             : 
      34             : #include "kdc_locl.h"
      35             : 
      36             : static krb5plugin_windc_ftable *windcft;
      37             : static void *windcctx;
      38             : 
      39             : /*
      40             :  * Pick the first WINDC module that we find.
      41             :  */
      42             : 
      43             : krb5_error_code
      44          92 : krb5_kdc_windc_init(krb5_context context)
      45             : {
      46          92 :     struct krb5_plugin *list = NULL, *e;
      47             :     krb5_error_code ret;
      48             : 
      49          92 :     ret = _krb5_plugin_find(context, PLUGIN_TYPE_DATA, "windc", &list);
      50          92 :     if(ret != 0 || list == NULL)
      51           0 :         return 0;
      52             : 
      53         176 :     for (e = list; e != NULL; e = _krb5_plugin_get_next(e)) {
      54             : 
      55          92 :         windcft = _krb5_plugin_get_symbol(e);
      56          92 :         if (windcft->minor_version < KRB5_WINDC_PLUGIN_MINOR)
      57           0 :             continue;
      58             : 
      59          92 :         (*windcft->init)(context, &windcctx);
      60          92 :         break;
      61             :     }
      62          92 :     _krb5_plugin_free(list);
      63          92 :     if (e == NULL) {
      64           0 :         krb5_set_error_message(context, ENOENT, "Did not find any WINDC plugin");
      65           0 :         windcft = NULL;
      66           0 :         return ENOENT;
      67             :     }
      68             : 
      69          84 :     return 0;
      70             : }
      71             : 
      72             : 
      73             : krb5_error_code
      74       26965 : _kdc_pac_generate(krb5_context context,
      75             :                   hdb_entry_ex *client,
      76             :                   const krb5_keyblock *pk_reply_key,
      77             :                   krb5_pac *pac)
      78             : {
      79       26965 :     *pac = NULL;
      80       26965 :     if (windcft == NULL)
      81           0 :         return 0;
      82       26965 :     if (windcft->pac_pk_generate != NULL && pk_reply_key != NULL)
      83          26 :         return (windcft->pac_pk_generate)(windcctx, context,
      84             :                                           client, pk_reply_key, pac);
      85       26939 :     return (windcft->pac_generate)(windcctx, context, client, pac);
      86             : }
      87             : 
      88             : krb5_error_code
      89       39896 : _kdc_pac_verify(krb5_context context,
      90             :                 const krb5_principal client_principal,
      91             :                 const krb5_principal delegated_proxy_principal,
      92             :                 hdb_entry_ex *client,
      93             :                 hdb_entry_ex *server,
      94             :                 hdb_entry_ex *krbtgt,
      95             :                 krb5_pac *pac,
      96             :                 int *verified)
      97             : {
      98             :     krb5_error_code ret;
      99             : 
     100       39896 :     if (windcft == NULL)
     101           0 :         return 0;
     102             : 
     103       39896 :     ret = windcft->pac_verify(windcctx, context,
     104             :                               client_principal,
     105             :                               delegated_proxy_principal,
     106             :                               client, server, krbtgt, pac);
     107       39896 :     if (ret == 0)
     108       39896 :         *verified = 1;
     109       38807 :     return ret;
     110             : }
     111             : 
     112             : krb5_error_code
     113       26353 : _kdc_check_access(krb5_context context,
     114             :                   krb5_kdc_configuration *config,
     115             :                   hdb_entry_ex *client_ex, const char *client_name,
     116             :                   hdb_entry_ex *server_ex, const char *server_name,
     117             :                   KDC_REQ *req,
     118             :                   krb5_data *e_data)
     119             : {
     120       26353 :     if (windcft == NULL)
     121           0 :             return kdc_check_flags(context, config,
     122             :                                    client_ex, client_name,
     123             :                                    server_ex, server_name,
     124           0 :                                    req->msg_type == krb_as_req);
     125             : 
     126       26353 :     return (windcft->client_access)(windcctx,
     127             :                                     context, config,
     128             :                                     client_ex, client_name,
     129             :                                     server_ex, server_name,
     130             :                                     req, e_data);
     131             : }