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/*
* lib/krb5/krb/copy_auth.c
*
* Copyright 1990 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
*
* krb5_copy_authdata()
*/
/*
* Copyright (c) 2006-2008, Novell, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * 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.
* * The copyright holder's name is not used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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 "k5-int.h"
static krb5_error_code
krb5_copy_authdatum(krb5_context context, const krb5_authdata *inad, krb5_authdata **outad)
{
krb5_authdata *tmpad;
if (!(tmpad = (krb5_authdata *)malloc(sizeof(*tmpad))))
return ENOMEM;
*tmpad = *inad;
if (!(tmpad->contents = (krb5_octet *)malloc(inad->length))) {
krb5_xfree(tmpad);
return ENOMEM;
}
memcpy((char *)tmpad->contents, (char *)inad->contents, inad->length);
*outad = tmpad;
return 0;
}
/*
* Copy an authdata array, with fresh allocation.
*/
krb5_error_code KRB5_CALLCONV
krb5_copy_authdata(krb5_context context, krb5_authdata *const *inauthdat, krb5_authdata ***outauthdat)
{
krb5_error_code retval;
krb5_authdata ** tempauthdat;
register unsigned int nelems = 0;
if (!inauthdat) {
*outauthdat = 0;
return 0;
}
while (inauthdat[nelems]) nelems++;
/* one more for a null terminated list */
if (!(tempauthdat = (krb5_authdata **) calloc(nelems+1,
sizeof(*tempauthdat))))
return ENOMEM;
for (nelems = 0; inauthdat[nelems]; nelems++) {
retval = krb5_copy_authdatum(context, inauthdat[nelems],
&tempauthdat[nelems]);
if (retval) {
krb5_free_authdata(context, tempauthdat);
return retval;
}
}
*outauthdat = tempauthdat;
return 0;
}
krb5_error_code KRB5_CALLCONV
krb5_decode_authdata_container(krb5_context context,
krb5_authdatatype type,
const krb5_authdata *container,
krb5_authdata ***authdata)
{
krb5_error_code code;
krb5_data data;
*authdata = NULL;
if ((container->ad_type & AD_TYPE_FIELD_TYPE_MASK) != type)
return EINVAL;
data.length = container->length;
data.data = (char *)container->contents;
code = decode_krb5_authdata(&data, authdata);
if (code)
return code;
return 0;
}
krb5_error_code KRB5_CALLCONV
krb5_encode_authdata_container(krb5_context context,
krb5_authdatatype type,
krb5_authdata *const*authdata,
krb5_authdata ***container)
{
krb5_error_code code;
krb5_data *data;
krb5_authdata ad_datum;
krb5_authdata *ad_data[2];
*container = NULL;
code = encode_krb5_authdata((krb5_authdata * const *)authdata, &data);
if (code)
return code;
ad_datum.ad_type = type & AD_TYPE_FIELD_TYPE_MASK;
ad_datum.length = data->length;
ad_datum.contents = (unsigned char *)data->data;
ad_data[0] = &ad_datum;
ad_data[1] = NULL;
code = krb5_copy_authdata(context, ad_data, container);
krb5_free_data(context, data);
return code;
}
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