| 1 | /*
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| 2 | * Copyright (c) 1997 - 2002 Kungliga Tekniska Högskolan
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| 3 | * (Royal Institute of Technology, Stockholm, Sweden).
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| 4 | * All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | *
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| 10 | * 1. Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | *
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| 13 | * 2. Redistributions in binary form must reproduce the above copyright
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| 14 | * notice, this list of conditions and the following disclaimer in the
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| 15 | * documentation and/or other materials provided with the distribution.
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| 16 | *
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| 17 | * 3. Neither the name of the Institute nor the names of its contributors
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| 18 | * may be used to endorse or promote products derived from this software
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| 19 | * without specific prior written permission.
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| 20 | *
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| 21 | * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 31 | * SUCH DAMAGE.
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| 32 | */
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| 33 |
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| 34 | #include "krb5_locl.h"
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| 35 |
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| 36 | KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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| 37 | krb5_build_ap_req (krb5_context context,
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| 38 | krb5_enctype enctype,
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| 39 | krb5_creds *cred,
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| 40 | krb5_flags ap_options,
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| 41 | krb5_data authenticator,
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| 42 | krb5_data *retdata)
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| 43 | {
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| 44 | krb5_error_code ret = 0;
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| 45 | AP_REQ ap;
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| 46 | Ticket t;
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| 47 | size_t len;
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| 48 |
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| 49 | ap.pvno = 5;
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| 50 | ap.msg_type = krb_ap_req;
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| 51 | memset(&ap.ap_options, 0, sizeof(ap.ap_options));
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| 52 | ap.ap_options.use_session_key = (ap_options & AP_OPTS_USE_SESSION_KEY) > 0;
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| 53 | ap.ap_options.mutual_required = (ap_options & AP_OPTS_MUTUAL_REQUIRED) > 0;
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| 54 |
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| 55 | ap.ticket.tkt_vno = 5;
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| 56 | copy_Realm(&cred->server->realm, &ap.ticket.realm);
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| 57 | copy_PrincipalName(&cred->server->name, &ap.ticket.sname);
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| 58 |
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| 59 | decode_Ticket(cred->ticket.data, cred->ticket.length, &t, &len);
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| 60 | copy_EncryptedData(&t.enc_part, &ap.ticket.enc_part);
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| 61 | free_Ticket(&t);
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| 62 |
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| 63 | ap.authenticator.etype = enctype;
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| 64 | ap.authenticator.kvno = NULL;
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| 65 | ap.authenticator.cipher = authenticator;
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| 66 |
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| 67 | ASN1_MALLOC_ENCODE(AP_REQ, retdata->data, retdata->length,
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| 68 | &ap, &len, ret);
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| 69 | if(ret == 0 && retdata->length != len)
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| 70 | krb5_abortx(context, "internal error in ASN.1 encoder");
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| 71 | free_AP_REQ(&ap);
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| 72 | return ret;
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| 73 |
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| 74 | }
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