/*
 * Copyright (c) 1993 W. Richard Stevens.  All rights reserved.
 * Permission to use or modify this software and its documentation only for
 * educational purposes and without fee is hereby granted, provided that
 * the above copyright notice appear in all copies.  The author makes no
 * representations about the suitability of this software for any purpose.
 * It is provided "as is" without express or implied warranty.
 */

#include	"unp.h"

#include	<sys/uio.h>
#ifdef	__bsdi__
#include	<machine/endian.h>	/* required before tcp.h, for BYTE_ORDER */
#endif
#include	<netinet/tcp.h>		/* TCP_NODELAY */
#include	<netdb.h>			/* getservbyname(), gethostbyname() */

				/* declare global variables */
extern int		bindport;
extern int		broadcast;
extern int		cbreak;
extern int		chunkwrite;
extern int		client;
extern int		connectudp;
extern int		crlf;
extern int		debug;
extern int		dofork;
extern int		dontroute;
extern char		foreignip[];
extern int		foreignport;
extern int		halfclose;
extern int		ignorewerr;
extern int		iptos;
extern int		ipttl;
extern char		joinip[];
extern int		keepalive;
extern long		linger;
extern int		listenq;
extern char		localip[];
extern int		maxseg;
extern int		mcastttl;
extern int		msgpeek;
extern int		nodelay;
extern int		nbuf;
extern int		onesbcast;
extern int		pauseclose;
extern int		pauseinit;
extern int		pauselisten;
extern int		pauserw;
extern int		reuseaddr;
extern int		reuseport;
extern int		readlen;
extern int		writelen;
extern int		recvdstaddr;
extern int		rcvbuflen;
extern int		sndbuflen;
extern long		rcvtimeo;
extern long		sndtimeo;
extern char	   *rbuf;
extern char	   *wbuf;
extern int		server;
extern int		sigio;
extern int		sourcesink;
extern int		sroute_cnt;
extern int		udp;
extern int		urgwrite;
extern int		verbose;
extern int		usewritev;

extern struct sockaddr_in	cliaddr, servaddr;

/* Earlier versions of gcc under SunOS 4.x have problems passing arguments
   that are structs (as opposed to pointers to structs).  This shows up
   with inet_ntoa, whose argument is a "struct in_addr". */

#if	defined(sun) && defined(__GNUC__) && defined(GCC_STRUCT_PROBLEM)
#define	INET_NTOA(foo)	inet_ntoa(&foo)
#else
#define	INET_NTOA(foo)	inet_ntoa(foo)
#endif

				/* function prototypes */
void	buffers(int);
int		cliopen(char *, char *);
int		crlf_add(char *, int, const char *, int);
int		crlf_strip(char *, int, const char *, int);
void	join_mcast(int, struct sockaddr_in *);
void	loop_tcp(int);
void	loop_udp(int);
void	pattern(char *, int);
int		servopen(char *, char *);
void	sink_tcp(int);
void	sink_udp(int);
void	source_tcp(int);
void	source_udp(int);
void	sroute_doopt(int, char *);
void	sroute_set(int);
void	sleep_us(unsigned int);
void	sockopts(int, int);
ssize_t	dowrite(int, const void *, size_t);

void	TELL_WAIT(void);
void	TELL_PARENT(pid_t);
void	WAIT_PARENT(void);
void	TELL_CHILD(pid_t);
void	WAIT_CHILD(void);