/*
* Amanda, The Advanced Maryland Automatic Network Disk Archiver
* Copyright (c) 1991-1999 University of Maryland at College Park
* Copyright (c) 2007-2012 Zmanda, Inc. All Rights Reserved.
* Copyright (c) 2013-2016 Carbonite, Inc. All Rights Reserved.
* All Rights Reserved.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, 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 U.M. not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. U.M. makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* U.M. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL U.M.
* BE LIABLE FOR ANY SPECIAL, 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.
*
* Author: James da Silva, Systems Design and Analysis Group
* Computer Science Department
* University of Maryland at College Park
*/
/*
* $Id: dgram.h,v 1.15 2006/05/25 01:47:11 johnfranks Exp $
*
* interface for datagram module
*/
#ifndef DGRAM_H
#define DGRAM_H
#include "amanda.h"
/*
* Maximum datagram (UDP packet) we can generate. Size is limited by
* a 16 bit length field in an IPv4 header (65535), which must include
* the 24 byte IP header and the 8 byte UDP header.
*/
#define MAX_DGRAM (((1<<16)-1)-24-8)
typedef struct dgram_s {
char *cur;
int socket;
size_t len;
char data[MAX_DGRAM+1];
} dgram_t;
int dgram_bind(dgram_t *dgram, sa_family_t family, in_port_t *portp, int priv, char **bind_msg);
void dgram_socket(dgram_t *dgram, int sock);
int dgram_send_addr(sockaddr_union *addr, dgram_t *dgram);
ssize_t dgram_recv(dgram_t *dgram, int timeout,
sockaddr_union *fromaddr);
void dgram_zero(dgram_t *dgram);
int dgram_cat(dgram_t *dgram, const char *fmt, ...)
G_GNUC_PRINTF(2, 3);
void dgram_eatline(dgram_t *dgram);
#endif /* ! DGRAM_H */