lib/krb5/mk_req_ext.c

   1 /*
   2  * Copyright (c) 1997 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. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed by Kungliga Tekniska
  20  *      Högskolan and its contributors.
  21  *
  22  * 4. Neither the name of the Institute nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  */
  38
  39 #include <krb5_locl.h>
  40
  41 RCSID("$Id$");
  42
  43 krb5_error_code
  44 krb5_mk_req_extended(krb5_context context,
  45                      krb5_auth_context *auth_context,
  46                      const krb5_flags ap_req_options,
  47                      krb5_data *in_data,
  48                      krb5_creds *in_creds,
  49                      krb5_data *outbuf)
  50 {
  51   krb5_error_code r;
  52   krb5_data authenticator;
  53   Checksum c;
  54   Checksum *c_opt;
  55
  56   krb5_auth_context ac;
  57   if(auth_context) {
  58       if(*auth_context == NULL)
  59           r = krb5_auth_con_init(context, auth_context);
  60       else
  61           r = 0;
  62       ac = *auth_context;
  63   } else
  64       r = krb5_auth_con_init(context, &ac);
  65   if(r)
  66       return r;
  67
  68   free_EncryptionKey (&ac->key);
  69   copy_EncryptionKey (&in_creds->session,
  70                       &ac->key);
  71
  72   if (in_data) {
  73
  74       r = krb5_create_checksum (context,
  75                                 ac->cksumtype,
  76                                 in_data->data,
  77                                 in_data->length,
  78                                 &ac->key,
  79                                 &c);
  80       c_opt = &c;
  81   } else {
  82       c_opt = NULL;
  83   }
  84
  85   r = krb5_build_authenticator (context,
  86                                 ac,
  87                                 in_creds,
  88                                 c_opt,
  89                                 NULL,
  90                                 &authenticator);
  91   if (c_opt)
  92       free_Checksum (c_opt);
  93   if (r)
  94     return r;
  95
  96   r = krb5_build_ap_req (context, in_creds, ap_req_options,
  97                          authenticator, outbuf);
  98   if(auth_context == NULL)
  99       krb5_auth_con_free(context, ac);
 100   return r;
 101 }