tftp-options.h

/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (C) 2008 Edwin Groothuis. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*
 * Options
 */

void		init_options(void);
uint16_t	make_options(int peer, char *buffer, uint16_t size);
int		parse_options(int peer, char *buffer, uint16_t size);

/* Call back functions */
int	option_tsize(int peer, struct tftphdr *, int, struct stat *);
int	option_timeout(int peer);
int	option_blksize(int peer);
int	option_blksize2(int peer);
int	option_rollover(int peer);
int	option_windowsize(int peer);

extern int options_extra_enabled;
extern int options_rfc_enabled;

struct options {
	const char	*o_type;
	char		*o_request;
	char		*o_reply;
	int		(*o_handler)(int peer);
	int		rfc;
};

extern struct options	options[];
enum opt_enum {
	OPT_TSIZE = 0,
	OPT_TIMEOUT,
	OPT_BLKSIZE,
	OPT_BLKSIZE2,
	OPT_ROLLOVER,
	OPT_WINDOWSIZE,
};

int	options_set_request(enum opt_enum, const char *, ...)
	__printf0like(2, 3);
int	options_set_reply(enum opt_enum, const char *, ...)
	__printf0like(2, 3);