/*

 * Amanda, The Advanced Maryland Automatic Network Disk Archiver

 * Copyright (c) 2008-2012 Zmanda, Inc.  All Rights Reserved.

 * Copyright (c) 2013-2016 Carbonite, Inc.  All Rights Reserved.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful, but

 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY

 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * for more details.

 *

 * You should have received a copy of the GNU General Public License along

 * with this program; if not, write to the Free Software Foundation, Inc.,

 * 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA

 *

 * Contact information: Carbonite Inc., 756 N Pastoria Ave

 * Sunnyvale, CA 94085, or: http://www.zmanda.com

 */

#include "amanda.h"

#include "amutil.h"

#include "amxfer.h"

/*

 * Class declaration

 *

 * This declaration is entirely private; nothing but xfer_dest_fd() references

 * it directly.

 */

GType xfer_dest_fd_get_type(void);

#define XFER_DEST_FD_TYPE (xfer_dest_fd_get_type())

#define XFER_DEST_FD(obj) G_TYPE_CHECK_INSTANCE_CAST((obj), xfer_dest_fd_get_type(), XferDestFd)

#define XFER_DEST_FD_CONST(obj) G_TYPE_CHECK_INSTANCE_CAST((obj), xfer_dest_fd_get_type(), XferDestFd const)

#define XFER_DEST_FD_CLASS(klass) G_TYPE_CHECK_CLASS_CAST((klass), xfer_dest_fd_get_type(), XferDestFdClass)

#define IS_XFER_DEST_FD(obj) G_TYPE_CHECK_INSTANCE_TYPE((obj), xfer_dest_fd_get_type ())

#define XFER_DEST_FD_GET_CLASS(obj) G_TYPE_INSTANCE_GET_CLASS((obj), xfer_dest_fd_get_type(), XferDestFdClass)

static GObjectClass *parent_class = NULL;

/*

 * Main object structure

 */

typedef struct XferDestFd {

    XferElement __parent__;

} XferDestFd;

/*

 * Class definition

 */

typedef struct {

    XferElementClass __parent__;

} XferDestFdClass;

/*

 * Implementation

 */

static void

instance_init(

    XferElement *elt)

{

    make_crc_table();

    crc32_init(&elt->crc);

}

static void

class_init(

    XferDestFdClass * selfc)

{

    XferElementClass *klass = XFER_ELEMENT_CLASS(selfc);

    static xfer_element_mech_pair_t mech_pairs[] = {

	{ XFER_MECH_WRITEFD, XFER_MECH_NONE, XFER_NROPS(0), XFER_NTHREADS(0), XFER_NALLOC(0) },

	{ XFER_MECH_NONE, XFER_MECH_NONE, XFER_NROPS(0), XFER_NTHREADS(0), XFER_NALLOC(0) },

    };

    klass->perl_class = "Amanda::Xfer::Dest::Fd";

    klass->mech_pairs = mech_pairs;

    parent_class = g_type_class_peek_parent(selfc);

}

GType

xfer_dest_fd_get_type (void)

{

    static GType type = 0;

    if (G_UNLIKELY(type == 0)) {

        static const GTypeInfo info = {

            sizeof (XferDestFdClass),

            (GBaseInitFunc) NULL,

            (GBaseFinalizeFunc) NULL,

            (GClassInitFunc) class_init,

            (GClassFinalizeFunc) NULL,

            NULL /* class_data */,

            sizeof (XferDestFd),

            0 /* n_preallocs */,

            (GInstanceInitFunc) instance_init,

            NULL

        };

        type = g_type_register_static (XFER_ELEMENT_TYPE, "XferDestFd", &info, 0);

    }

    return type;

}

/* create an element of this class; prototype is in xfer-element.h */

XferElement *

xfer_dest_fd(

    int fd)

{

    XferDestFd *self = (XferDestFd *)g_object_new(XFER_DEST_FD_TYPE, NULL);

    XferElement *elt = XFER_ELEMENT(self);

    int old_fd;

    g_assert(fd >= 0);

    /* we keep a *copy* of this fd, because our caller will close it to

     * indicate EOF */

    old_fd = xfer_element_swap_input_fd(elt, dup(fd));

    g_assert(old_fd == -1);

    return elt;

}