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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* lib/krb5/krb/copy_data.c
*
* Copyright 1990,1991,2009 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_data()
*/
#include "k5-int.h"
/*
* Copy a data structure, with fresh allocation.
*/
krb5_error_code KRB5_CALLCONV
krb5_copy_data(krb5_context context, const krb5_data *indata, krb5_data **outdata)
{
krb5_data *tempdata;
krb5_error_code retval;
if (!indata) {
*outdata = 0;
return 0;
}
if (!(tempdata = (krb5_data *)malloc(sizeof(*tempdata))))
return ENOMEM;
retval = krb5int_copy_data_contents(context, indata, tempdata);
if (retval) {
free(tempdata);
return retval;
}
*outdata = tempdata;
return 0;
}
krb5_error_code
krb5int_copy_data_contents(krb5_context context, const krb5_data *indata, krb5_data *outdata)
{
if (!indata) {
return EINVAL;
}
outdata->length = indata->length;
if (outdata->length) {
if (!(outdata->data = malloc(outdata->length))) {
return ENOMEM;
}
memcpy(outdata->data, indata->data, outdata->length);
} else
outdata->data = 0;
outdata->magic = KV5M_DATA;
return 0;
}
/* As above, but add an (uncounted) extra byte at the end to
null-terminate the data so it can be used as a standard C
string. */
krb5_error_code
krb5int_copy_data_contents_add0(krb5_context context, const krb5_data *indata, krb5_data *outdata)
{
if (!indata)
return EINVAL;
outdata->length = indata->length;
if (!(outdata->data = malloc(outdata->length + 1)))
return ENOMEM;
if (outdata->length)
memcpy(outdata->data, indata->data, outdata->length);
outdata->data[outdata->length] = 0;
outdata->magic = KV5M_DATA;
return 0;
}
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