/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (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 2001-2002 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _TFTPCOMMON_H
#define _TFTPCOMMON_H

/*
 * Defines and function declarations common to tftp and in.tftpd.
 */

#ifdef __cplusplus
extern "C" {
#endif

#include <arpa/tftp.h>

#define MIN_BLKSIZE     8                       /* RFC 2348 */
#define MAX_BLKSIZE     65464                   /* RFC 2348 */
#define MIN_TIMEOUT     1                       /* RFC 2349 */
#define MAX_TIMEOUT     255                     /* RFC 2349 */
#define PKTSIZE         (MAX_BLKSIZE + 4)       /* DATA packet max size */
#define MAX_OPTVAL_LEN  32                      /* Option value max length */

/* Format when printing an off_t */
#if _FILE_OFFSET_BITS == 64
#define OFF_T_FMT       "%lld"
#else
#define OFF_T_FMT       "%ld"
#endif

typedef union {
        struct tftphdr  tb_hdr;
        char            tb_data[PKTSIZE];
} tftpbuf;

struct errmsg {
        int     e_code;
        char    *e_msg;
};
extern struct errmsg    errmsgs[];

/* Declarations for shared functions in tftpsubs.c */
extern struct tftphdr   *w_init(void);
extern struct tftphdr   *r_init(void);
extern int              readit(FILE *, struct tftphdr **, int);
extern void             read_ahead(FILE *, int);
extern int              writeit(FILE *, struct tftphdr **, int, int);
extern int              write_behind(FILE *, int);
extern int              synchnet(int);
extern char             *next_field(const char *, const char *);
extern void             print_options(FILE *, char *, int);
extern void             cancel_alarm(void);

#ifdef __cplusplus
}
#endif

#endif /* _TFTPCOMMON_H */