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
36 KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_build_ap_req(krb5_context context,krb5_enctype enctype,krb5_creds * cred,krb5_flags ap_options,krb5_data authenticator,krb5_data * retdata)37 krb5_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 Ticket t;
47 size_t len;
48
49 ap.pvno = 5;
50 ap.msg_type = krb_ap_req;
51 memset(&ap.ap_options, 0, sizeof(ap.ap_options));
52 ap.ap_options.use_session_key = (ap_options & AP_OPTS_USE_SESSION_KEY) > 0;
53 ap.ap_options.mutual_required = (ap_options & AP_OPTS_MUTUAL_REQUIRED) > 0;
54
55 ap.ticket.tkt_vno = 5;
56 copy_Realm(&cred->server->realm, &ap.ticket.realm);
57 copy_PrincipalName(&cred->server->name, &ap.ticket.sname);
58
59 decode_Ticket(cred->ticket.data, cred->ticket.length, &t, &len);
60 copy_EncryptedData(&t.enc_part, &ap.ticket.enc_part);
61 free_Ticket(&t);
62
63 ap.authenticator.etype = enctype;
64 ap.authenticator.kvno = NULL;
65 ap.authenticator.cipher = authenticator;
66
67 ASN1_MALLOC_ENCODE(AP_REQ, retdata->data, retdata->length,
68 &ap, &len, ret);
69 if(ret == 0 && retdata->length != len)
70 krb5_abortx(context, "internal error in ASN.1 encoder");
71 free_AP_REQ(&ap);
72 return ret;
73
74 }
75