libradproto/common/radproto_util.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
 */

#include <rpc/xdr.h>
#include <unistd.h>
#include <stdlib.h>

#include "radproto_util.h"

bool_t
xdr_embed(xdrproc_t proc, void *obj, uint_t *len, char **val)
{
    XDR mxdr;
    uint_t size = xdr_sizeof(proc, obj);
    char *buffer = malloc(size);
    if (buffer == NULL)
        return (FALSE);

    mxdr.x_ops = NULL;
    xdrmem_create(&mxdr, buffer, size, XDR_ENCODE);
    if (mxdr.x_ops == NULL) {
        free(buffer);
        return (FALSE);
    }
    if (!proc(&mxdr, obj)) {
        free(buffer);
        xdr_destroy(&mxdr);
        return (FALSE);
    }
    xdr_destroy(&mxdr);

    *len = size;
    *val = buffer;
    return (TRUE);
}

bool_t
xdr_unembed(xdrproc_t proc, void *obj, uint_t len, char *val)
{
    XDR mxdr;
    mxdr.x_ops = NULL;
    xdrmem_create(&mxdr, val, len, XDR_DECODE);
    if (mxdr.x_ops == NULL)
        return (FALSE);
    if (!proc(&mxdr, obj)) {
        xdr_destroy(&mxdr);
        return (FALSE);
    }
    xdr_destroy(&mxdr);
    return (TRUE);
}


bool_t
xdr_recpair(XDR *rxdr, XDR *wxdr, void *data,
    int(*readfp)(void *, char *, int), int(*writefp)(void *, char *, int))
{
    rxdr->x_ops = wxdr->x_ops = NULL;
    xdrrec_create(rxdr, 0, 0, (char *)data,
        (int(*)(void *, char *, int))readfp, NULL);
    if (rxdr->x_ops == NULL)
        return (FALSE);
    xdrrec_create(wxdr, 0, 0, (char *)data,
        NULL, (int(*)(void *, char *, int))writefp);
    if (wxdr->x_ops == NULL) {
        xdr_destroy(rxdr);
        return (FALSE);
    }
    rxdr->x_op = XDR_DECODE;
    wxdr->x_op = XDR_ENCODE;
    return (TRUE);
}