1 /* 2 * Copyright (c) 1997 - 2001 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 36 RCSID("$Id: build_ap_req.c,v 1.17 2001/05/14 06:14:44 assar Exp $"); 37 38 krb5_error_code 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 retdata->length = length_AP_REQ(&ap); 70 retdata->data = malloc(retdata->length); 71 if(retdata->data == NULL) { 72 krb5_set_error_string(context, "malloc: out of memory"); 73 ret = ENOMEM; 74 } else 75 encode_AP_REQ((unsigned char *)retdata->data + retdata->length - 1, 76 retdata->length, &ap, &len); 77 free_AP_REQ(&ap); 78 79 return ret; 80 } 81