1/*
2 * Copyright (c) 1997 - 2002 Kungliga Tekniska H�gskolan
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
36RCSID("$Id: build_ap_req.c 13863 2004-05-25 21:46:46Z lha $");
37
38krb5_error_code KRB5_LIB_FUNCTION
39krb5_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}
77