/*
 * Copyright (c) 2013 Todd C. Miller <millert@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>
#include <db.h>
#include <string.h>

#include "grey.h"

/* Fill in struct gdata from DBT, converting from obsolete format as needed. */
int
gdcopyin(const void *v, struct gdata *gd)
{
        const DBT *dbd = v;
        int rc = 0;

        if (dbd->size == sizeof(struct gdata)) {
                /* Current grey data format. */
                memcpy(gd, dbd->data, sizeof(struct gdata));
        } else if (dbd->size == sizeof(struct ogdata)) {
                /* Backwards compat for obsolete grey data format. */
                struct ogdata ogd;
                memcpy(&ogd, dbd->data, sizeof(struct ogdata));
                gd->first = ogd.first;
                gd->pass = ogd.pass;
                gd->expire = ogd.expire;
                gd->bcount = ogd.bcount;
                gd->pcount = ogd.pcount;
        } else {
                /* Unsupported grey data format. */
                rc = -1;
        }
        return (rc);
}