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/*
* Copyright (c) 1997-2021 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* Copyright (c) 2021 Isaac Boukris
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "krb5_locl.h"
/*
* Add the AuthorizationData `data´ of `type´ to the last element in
* the sequence of authorization_data in `tkt´ wrapped in an IF_RELEVANT
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
_kdc_tkt_add_if_relevant_ad(krb5_context context,
EncTicketPart *tkt,
int type,
const krb5_data *data)
{
krb5_error_code ret;
size_t size = 0;
if (tkt->authorization_data == NULL) {
tkt->authorization_data = calloc(1, sizeof(*tkt->authorization_data));
if (tkt->authorization_data == NULL) {
return krb5_enomem(context);
}
}
/* add the entry to the last element */
{
AuthorizationData ad = { 0, NULL };
AuthorizationDataElement ade;
ade.ad_type = type;
ade.ad_data = *data;
ret = add_AuthorizationData(&ad, &ade);
if (ret) {
krb5_set_error_message(context, ret, "add AuthorizationData failed");
return ret;
}
ade.ad_type = KRB5_AUTHDATA_IF_RELEVANT;
ASN1_MALLOC_ENCODE(AuthorizationData,
ade.ad_data.data, ade.ad_data.length,
&ad, &size, ret);
free_AuthorizationData(&ad);
if (ret) {
krb5_set_error_message(context, ret, "ASN.1 encode of "
"AuthorizationData failed");
return ret;
}
if (ade.ad_data.length != size)
krb5_abortx(context, "internal asn.1 encoder error");
ret = add_AuthorizationData(tkt->authorization_data, &ade);
der_free_octet_string(&ade.ad_data);
if (ret) {
krb5_set_error_message(context, ret, "add AuthorizationData failed");
return ret;
}
}
return 0;
}
/*
* Insert a PAC wrapped in AD-IF-RELEVANT container as the first AD element,
* as some clients such as Windows may fail to parse it otherwise.
*/
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
_kdc_tkt_insert_pac(krb5_context context,
EncTicketPart *tkt,
const krb5_data *data)
{
AuthorizationDataElement ade;
unsigned int i;
krb5_error_code ret;
ret = _kdc_tkt_add_if_relevant_ad(context, tkt, KRB5_AUTHDATA_WIN2K_PAC,
data);
if (ret)
return ret;
heim_assert(tkt->authorization_data->len != 0, "No authorization_data!");
ade = tkt->authorization_data->val[tkt->authorization_data->len - 1];
for (i = 0; i < tkt->authorization_data->len - 1; i++) {
tkt->authorization_data->val[i + 1] = tkt->authorization_data->val[i];
}
tkt->authorization_data->val[0] = ade;
return 0;
}
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