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/*
* lib/krb5/ccache/file/mcc_nseq.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. 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.
*
*
* This file contains the source code for krb5_mcc_next_cred.
*/
#include "mcc.h"
/*
* Requires:
* cursor is a krb5_cc_cursor originally obtained from
* krb5_mcc_start_seq_get.
*
* Modifes:
* cursor, creds
*
* Effects:
* Fills in creds with the "next" credentals structure from the cache
* id. The actual order the creds are returned in is arbitrary.
* Space is allocated for the variable length fields in the
* credentials structure, so the object returned must be passed to
* krb5_destroy_credential.
*
* The cursor is updated for the next call to krb5_mcc_next_cred.
*
* Errors:
* system errors
*/
krb5_error_code INTERFACE
krb5_mcc_next_cred(context, id, cursor, creds)
krb5_context context;
krb5_ccache id;
krb5_cc_cursor *cursor;
krb5_creds *creds;
{
krb5_mcc_cursor mcursor;
krb5_error_code retval;
krb5_data *scratch;
mcursor = (krb5_mcc_cursor) *cursor;
if (mcursor == NULL)
return KRB5_CC_END;
memset(creds, 0, sizeof(krb5_creds));
if (mcursor->creds) {
*creds = *mcursor->creds;
retval = krb5_copy_principal(context, mcursor->creds->client, &creds->client);
if (retval)
return retval;
retval = krb5_copy_principal(context, mcursor->creds->server,
&creds->server);
if (retval)
goto cleanclient;
retval = krb5_copy_keyblock_contents(context, &mcursor->creds->keyblock,
&creds->keyblock);
if (retval)
goto cleanserver;
retval = krb5_copy_addresses(context, mcursor->creds->addresses,
&creds->addresses);
if (retval)
goto cleanblock;
retval = krb5_copy_data(context, &mcursor->creds->ticket, &scratch);
if (retval)
goto cleanaddrs;
creds->ticket = *scratch;
krb5_xfree(scratch);
retval = krb5_copy_data(context, &mcursor->creds->second_ticket, &scratch);
if (retval)
goto cleanticket;
creds->second_ticket = *scratch;
krb5_xfree(scratch);
retval = krb5_copy_authdata(context, mcursor->creds->authdata,
&creds->authdata);
if (retval)
goto clearticket;
}
*cursor = (krb5_cc_cursor)mcursor->next;
return KRB5_OK;
clearticket:
memset(creds->ticket.data,0,creds->ticket.length);
cleanticket:
krb5_xfree(creds->ticket.data);
cleanaddrs:
krb5_free_addresses(context, creds->addresses);
cleanblock:
krb5_xfree(creds->keyblock.contents);
cleanserver:
krb5_free_principal(context, creds->server);
cleanclient:
krb5_free_principal(context, creds->client);
return retval;
}
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