/*-
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 THE REGENTS 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.
 *
 *	@(#)extern.h	8.2 (Berkeley) 4/4/94
 * $FreeBSD: src/libexec/ftpd/extern.h,v 1.19 2002/02/04 01:23:44 kris Exp $
 */

#include <sys/types.h>
#include <sys/socket.h>

void	blkfree(char **);
char  **copyblk(char **);
void	cwd(char *);
void	delete(char *);
void	dologout(int);
void	fatalerror(char *);
void	feat(void);
void    ftpd_logwtmp(char *, char *, struct sockaddr *addr);
int	ftpd_pclose(FILE *);
FILE   *ftpd_popen(char *, char *);
char   *getline(char *, int, FILE *);
void	lreply(int, const char *, ...);
void	makedir(char *);
void	nack(char *);
void	pass(char *);
void	passive(void);
void	long_passive(char *, int);
void	perror_reply(int, char *);
void	pwd(void);
void	removedir(char *);
void	renamecmd(char *, char *);
char   *renamefrom(char *);
void	reply(int, const char *, ...);
void	retrieve(char *, char *);
void	send_file_list(char *);
#ifdef OLD_SETPROCTITLE
void	setproctitle(const char *, ...);
#endif
void	statcmd(void);
void	statfilecmd(char *);
void	store(char *, char *, int);
void	synterr(char *);
void	upper(char *);
void	user(char *);
void	yyerror(char *);
int	yyparse(void);
#if defined(INTERNAL_LS)
int	ls_main(int, char **);
#endif

/*
 * Important note for porting to other platforms:
 * sockunion is dependent on the definition of the system's sockaddr_in and
 * sockaddr_in6, because it MUST keep the order of their members. There are
 * several known definitions of sockaddr_in and sockaddr_in6.
 *
 * FreeBSD (4.8/5.0):
 * struct sockaddr_in {
 *	uint8_t		sin_len;
 *	sa_family_t	sin_family;
 *	in_port_t	sin_port;
 *	struct	in_addr sin_addr;
 *	char		sin_zero[8];
 * };
 * struct sockaddr_in6 {
 *	uint8_t		sin6_len;
 *	sa_family_t	sin6_family;
 *	in_port_t	sin6_port;
 *	uint32_t	sin6_flowinfo;
 *	struct in6_addr	sin6_addr;
 *	uint32_t	sin6_scope_id;
 * };
 *
 * OpenBSD: sockaddr_[in|in6] has the same definition except that some
 * integer types has different names (u_int8_t instead of uint8_t and u_int32_t
 * instead of uint32_t) and member sin_zero[8] of sockaddr_in has type int8_t
 * instead of char.
 *
 * Linux (glibc-2.2.5):
 * struct sockaddr_in {
 *	sa_family_t sin_family;
 *	uint16_t sin_port;
 *	struct in_addr sin_addr;
 *	unsigned char sin_zero[sizeof (struct sockaddr) -
 *				sizeof (sa_family_t) -
 *				sizeof (uint16_t) -
 *				sizeof (struct in_addr)];
 * };
 * struct sockaddr_in6 {
 *	sa_family_t sin6_family;
 *	uint16_t sin6_port;
 *	uint32_t sin6_flowinfo;
 *	struct in6_addr sin6_addr;
 * };
 */
union sockunion {
	struct sockinet {
/* If we don't have the sin_len member, but we want to use si_len, we must put
 * si_len at the end. WARNING! In this case we must to initialize si_len by the
 * value of sizeof(struct sockaddr_in) or sizeof(struct sockaddr_in6) every
 * time than it will be initialized by correspondent library function in
 * sin_len-aware systems.
 */
#ifndef LINUX /* BSD source */
		u_char si_len;
		u_char si_family;
		u_short si_port;
#else /* Linux port */
		sa_family_t si_family;
		unsigned short int si_port;
#ifdef INET6
		char padding[sizeof(struct sockaddr_in6) - sizeof(sa_family_t) -
			     sizeof(unsigned short int)];
#else /* !INET6 */
		char padding[sizeof(struct sockaddr_in) - sizeof(sa_family_t) -
			     sizeof(unsigned short int)];
#endif /* INET6 */
/* Uncomment next line only if you really want to use si_len */
/*		u_char si_len;*/
#endif /* Linux port */
	} su_si;
	struct sockaddr_in  su_sin;
#ifdef INET6
	struct sockaddr_in6 su_sin6;
#endif /* INET6 */
};

#define	su_len		su_si.si_len
#define	su_family	su_si.si_family
#define	su_port		su_si.si_port