/*
 * Copyright (c) 2005 - 2006 Kungliga Tekniska Högskolan
 * (Royal Institute of Technology, Stockholm, Sweden). 
 * All rights reserved. 
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions 
 * are met: 
 *
 * 1. Redistributions of source code must retain the above copyright 
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. 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. 
 *
 * 3. Neither the name of the Institute nor the names of its contributors 
 *    may be used to endorse or promote products derived from this software 
 *    without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE 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 "hx_locl.h"
RCSID("$Id: ks_null.c 20901 2007-06-04 23:14:08Z lha $");


static int
null_init(hx509_context context,
	  hx509_certs certs, void **data, int flags,
	  const char *residue, hx509_lock lock)
{
    *data = NULL;
    return 0;
}

static int
null_free(hx509_certs certs, void *data)
{
    assert(data == NULL);
    return 0;
}

static int 
null_iter_start(hx509_context context,
		hx509_certs certs, void *data, void **cursor)
{
    *cursor = NULL;
    return 0;
}

static int
null_iter(hx509_context context,
	  hx509_certs certs, void *data, void *iter, hx509_cert *cert)
{
    *cert = NULL;
    return ENOENT;
}

static int
null_iter_end(hx509_context context,
	      hx509_certs certs,
	      void *data,
	      void *cursor)
{
    assert(cursor == NULL);
    return 0;
}


struct hx509_keyset_ops keyset_null = {
    "NULL",
    0,
    null_init,
    NULL,
    null_free,
    NULL,
    NULL,
    null_iter_start,
    null_iter,
    null_iter_end
};

void
_hx509_ks_null_register(hx509_context context)
{
    _hx509_ks_register(context, &keyset_null);
}
