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/*
* lib/krb5/krb/copy_creds.c
*
* Copyright 1990,1991 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_cred()
*/
#include "k5-int.h"
/*
* Copy credentials, allocating fresh storage where needed.
*/
krb5_error_code KRB5_CALLCONV
krb5_copy_creds(krb5_context context, const krb5_creds *incred, krb5_creds **outcred)
{
krb5_creds *tempcred;
krb5_error_code retval;
if (!(tempcred = (krb5_creds *)malloc(sizeof(*tempcred))))
return ENOMEM;
retval = krb5int_copy_creds_contents(context, incred, tempcred);
if (retval)
free(tempcred);
else
*outcred = tempcred;
return retval;
}
/*
* Copy contents of input credentials structure to supplied
* destination, allocating storage for indirect fields as needed. On
* success, the output is a deep copy of the input. On error, the
* output structure is garbage and its contents should be ignored.
*/
krb5_error_code
krb5int_copy_creds_contents(krb5_context context, const krb5_creds *incred,
krb5_creds *tempcred)
{
krb5_error_code retval;
krb5_data *scratch;
*tempcred = *incred;
retval = krb5_copy_principal(context, incred->client, &tempcred->client);
if (retval)
goto cleanlast;
retval = krb5_copy_principal(context, incred->server, &tempcred->server);
if (retval)
goto cleanclient;
retval = krb5_copy_keyblock_contents(context, &incred->keyblock,
&tempcred->keyblock);
if (retval)
goto cleanserver;
retval = krb5_copy_addresses(context, incred->addresses, &tempcred->addresses);
if (retval)
goto cleanblock;
retval = krb5_copy_data(context, &incred->ticket, &scratch);
if (retval)
goto cleanaddrs;
tempcred->ticket = *scratch;
free(scratch);
retval = krb5_copy_data(context, &incred->second_ticket, &scratch);
if (retval)
goto clearticket;
tempcred->second_ticket = *scratch;
free(scratch);
retval = krb5_copy_authdata(context, incred->authdata,&tempcred->authdata);
if (retval)
goto clearsecondticket;
return 0;
clearsecondticket:
memset(tempcred->second_ticket.data,0,tempcred->second_ticket.length);
free(tempcred->second_ticket.data);
clearticket:
memset(tempcred->ticket.data,0,tempcred->ticket.length);
free(tempcred->ticket.data);
cleanaddrs:
krb5_free_addresses(context, tempcred->addresses);
cleanblock:
free(tempcred->keyblock.contents);
cleanserver:
krb5_free_principal(context, tempcred->server);
cleanclient:
krb5_free_principal(context, tempcred->client);
cleanlast:
/* Do not free tempcred - we did not allocate it - its contents are
garbage - but we should not free it */
return retval;
}
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