1/*
2 * Copyright (c) 1997 - 2002 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 "krb5_locl.h"
35
36KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
37krb5_build_ap_req (krb5_context context,
38		   krb5_enctype enctype,
39		   krb5_creds *cred,
40		   krb5_flags ap_options,
41		   krb5_data authenticator,
42		   krb5_data *retdata)
43{
44  krb5_error_code ret = 0;
45  AP_REQ ap;
46  size_t len;
47
48  ap.pvno = 5;
49  ap.msg_type = krb_ap_req;
50
51  ap.ap_options.use_session_key = (ap_options & AP_OPTS_USE_SESSION_KEY) > 0;
52  ap.ap_options.mutual_required = (ap_options & AP_OPTS_MUTUAL_REQUIRED) > 0;
53
54  ret = decode_Ticket(cred->ticket.data, cred->ticket.length, &ap.ticket, &len);
55  if (ret) {
56      krb5_data_zero(retdata);
57      return ret;
58  }
59
60  ap.authenticator.etype = enctype;
61  ap.authenticator.kvno  = NULL;
62  ap.authenticator.cipher = authenticator;
63
64  ASN1_MALLOC_ENCODE(AP_REQ, retdata->data, retdata->length,
65		     &ap, &len, ret);
66  if(ret == 0 && retdata->length != len)
67      krb5_abortx(context, "internal error in ASN.1 encoder");
68  else if (ret)
69      krb5_data_zero(retdata);
70
71  free_AP_REQ(&ap);
72  return ret;
73}
74