crypto/external/bsd/heimdal/dist/lib/krb5/build_ap_req.c

   1 /*      $NetBSD: build_ap_req.c,v 1.1.1.1 2011/04/13 18:15:31 elric Exp $       */
   2
   3 /*
   4  * Copyright (c) 1997 - 2002 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 "krb5_locl.h"
  37
  38 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
  39 krb5_build_ap_req (krb5_context context,
  40                    krb5_enctype enctype,
  41                    krb5_creds *cred,
  42                    krb5_flags ap_options,
  43                    krb5_data authenticator,
  44                    krb5_data *retdata)
  45 {
  46   krb5_error_code ret = 0;
  47   AP_REQ ap;
  48   Ticket t;
  49   size_t len;
  50
  51   ap.pvno = 5;
  52   ap.msg_type = krb_ap_req;
  53   memset(&ap.ap_options, 0, sizeof(ap.ap_options));
  54   ap.ap_options.use_session_key = (ap_options & AP_OPTS_USE_SESSION_KEY) > 0;
  55   ap.ap_options.mutual_required = (ap_options & AP_OPTS_MUTUAL_REQUIRED) > 0;
  56
  57   ap.ticket.tkt_vno = 5;
  58   copy_Realm(&cred->server->realm, &ap.ticket.realm);
  59   copy_PrincipalName(&cred->server->name, &ap.ticket.sname);
  60
  61   decode_Ticket(cred->ticket.data, cred->ticket.length, &t, &len);
  62   copy_EncryptedData(&t.enc_part, &ap.ticket.enc_part);
  63   free_Ticket(&t);
  64
  65   ap.authenticator.etype = enctype;
  66   ap.authenticator.kvno  = NULL;
  67   ap.authenticator.cipher = authenticator;
  68
  69   ASN1_MALLOC_ENCODE(AP_REQ, retdata->data, retdata->length,
  70                      &ap, &len, ret);
  71   if(ret == 0 && retdata->length != len)
  72       krb5_abortx(context, "internal error in ASN.1 encoder");
  73   free_AP_REQ(&ap);
  74   return ret;
  75
  76 }