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/*
* lib/krb5/ccache/file/fcc_sseq.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_fcc_start_seq_get.
*/
#include "fcc.h"
/*
* Effects:
* Prepares for a sequential search of the credentials cache.
* Returns and krb5_cc_cursor to be used with krb5_fcc_next_cred and
* krb5_fcc_end_seq_get.
*
* If the cache is modified between the time of this call and the time
* of the final krb5_fcc_end_seq_get, the results are undefined.
*
* Errors:
* KRB5_CC_NOMEM
* system errors
*/
krb5_error_code INTERFACE
krb5_fcc_start_seq_get(context, id, cursor)
krb5_context context;
krb5_ccache id;
krb5_cc_cursor *cursor;
{
krb5_fcc_cursor *fcursor;
krb5_error_code kret = KRB5_OK;
krb5_fcc_data *data = (krb5_fcc_data *)id->data;
fcursor = (krb5_fcc_cursor *) malloc(sizeof(krb5_fcc_cursor));
if (fcursor == NULL)
return KRB5_CC_NOMEM;
if (OPENCLOSE(id)) {
kret = krb5_fcc_open_file(context, id, FCC_OPEN_RDONLY);
if (kret) {
krb5_xfree(fcursor);
return kret;
}
}
/* Make sure we start reading right after the primary principal */
kret = krb5_fcc_skip_header(context, id);
if (kret) goto done;
kret = krb5_fcc_skip_principal(context, id);
if (kret) goto done;
fcursor->pos = lseek(data->fd, 0, SEEK_CUR);
*cursor = (krb5_cc_cursor) fcursor;
done:
MAYBE_CLOSE(context, id, kret);
return kret;
}
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